CN107690162B

CN107690162B - Method and device for processing cell connection failure

Info

Publication number: CN107690162B
Application number: CN201610629249.8A
Authority: CN
Inventors: 吴昱民
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2016-08-03
Filing date: 2016-08-03
Publication date: 2021-05-11
Anticipated expiration: 2036-08-03
Also published as: CN107690162A

Abstract

The invention provides a method and a device for processing cell connection failure, wherein the method comprises the following steps: receiving a change command indicating a cell group change is made; determining that a connection with a source cell group and/or a target cell group fails when a cell group is changed according to a change command; and determining the failure type of the connection failure and performing connection failure processing by adopting a processing mode corresponding to the failure type. The invention solves the problems of wireless connection failure and data interruption in the wireless connection process in the related technology, and achieves the effect of more quickly recovering connection and data transmission when the user equipment encounters the wireless link problem.

Description

Method and device for processing cell connection failure

Technical Field

The present invention relates to the field of communications, and in particular, to a method and an apparatus for processing cell connection failure.

Background

Because the current Long Term Evolution (LTE) system adopts a handover method (i.e., break-before-make) that first disconnects the source cell and then establishes the connection in the target cell. An interruption of transmission and reception of service data may occur. Therefore, the 3rd Generation partnership project (3 GPP) group provides a new solution for simultaneously maintaining a connection between a User Equipment (UE) in a source cell and a target cell (i.e., a make-before-break). For reducing UE-side handover interruption latency.

Fig. 1 shows a handover signaling flow chart: the make-before-break protocol is described as follows:

step 1: the UE reports a Measurement Report (Measurement Report) to the network layer.

Step 2: a Source base station (Evolved Node B:, abbreviated eNB)) sends a Handover Request (Handover Request) to a Target base station (Target eNB).

And step 3: the target base station agrees to Handover and replies to a Handover Request acknowledgement (Handover Request acknowledgement).

And 4, step 4: the source base station sends a handover command, i.e., an RRC connection reconfiguration (RRCConnectionReconfiguration) message, to the UE. After receiving the handover command, the UE still maintains the connection with the source base station (or the source cell) without releasing, reserves the configuration of the source cell for maintaining the connection with the source cell, and saves the configuration of the target cell for subsequently establishing the connection with the target base station (or the target cell). And the UE initiates an access process in the target cell while maintaining data transmission with the source cell, and performs downlink synchronization of the target cell.

And 5a/5b, the source base station initiates a data forwarding process, sends number state transmission information (5a. SN Status Transfer) to the target base station, and forwards data (5b. data forwarding) to the target base station.

Step 6: the UE initiates a Random Access procedure in a target cell, for example, sends an uplink preamble (preamble) through a Physical Random Access Channel (PRACH).

And 7: the target base station replies a Random Access Response (RAR) to the UE.

And 8: the UE transmits an RRC connection configuration complete message (rrcconnectionreconfiguration complete) to the target cell.

And step 9: the target base station instructs the source base station to Release the air interface connection with the UE, i.e. a UE Context Release (UE Context Release) message.

The failure handling of a single connection is explained below:

a single connection means that the UE has a connection with only one base station, including one PCell or additionally including one or more Secondary cells (scells). The failure of a single connection includes the following 2 classes: radio link failure: the following 3 seed types were included:

the physical layer is out of sync (e.g., timer t310 times out).

The MAC layer fails random access (e.g., reaches a maximum number of random access attempts).

An indication of the maximum number of retransmissions to the RLC layer (e.g., the maximum number of retransmissions to the RLC layer).

And (3) switching failure: the handover is not successfully completed within a specified time (e.g., timer t307 times out).

The connection failure processing of Dual Connectivity (simply referred to as DC) is explained below:

in LTE systems, a Dual Connectivity (DC) functionality is introduced, the DC comprising two cell groups: master Cell Group (MCG) and Secondary Cell Group (SCG). Wherein an MCG includes a PCell or additionally includes one or more scells, and a Secondary Cell Group (SCG) includes a Primary Secondary Cell (PSCell) or additionally includes one or more scells. The failure in changing Primary Cell (PCell) is the same as the above-described radio link failure and handover failure. Failures in changing PSCell include:

radio link failure (where physical layer out-of-sync failure manifests as timer t313 time out);

the secondary cell group change fails (the target PSCell is not successfully connected within a predetermined time, which is represented by the timeout of the timer t 307;

and exceeding the maximum uplink transmission timing difference, wherein the maximum uplink transmission timing difference is the difference of the subframe boundary of uplink transmission between the MCG and the SCG when the network configures synchronous DC.

In the make-before-break scheme, when radio connection problems (including handover failure, radio link failure, secondary cell group change failure, exceeding of maximum uplink transmission timing difference) occur, problems of radio connection failure and data interruption occur.

In view of the above problems, no effective solution has been proposed in the related art.

Disclosure of Invention

The embodiment of the invention provides a method and a device for processing cell connection failure, which are used for at least solving the problems of radio connection failure and data interruption in the radio connection process in the related technology.

According to an embodiment of the present invention, a method for processing a cell connection failure is provided, including: receiving a change command indicating a cell group change is made; determining that a connection with a source cell group and/or a target cell group fails when a cell group change is performed according to the change command; determining the failure type of the connection failure and adopting a processing mode corresponding to the failure type to process the connection failure.

Optionally, when the change command is used to instruct to change the master cell group, determining a failure type of connection failure and performing connection failure processing in a processing manner corresponding to the failure type includes: when the connection with the source master cell group is maintained and the failure type is determined to be the radio link failure of the source master cell group, the processing mode comprises at least one of the following modes: storing first failure information of radio link failure, stopping receiving and transmitting data on the main cell group, triggering the report of the first failure information of radio link failure, and disconnecting the connection with the source main cell group; when the connection with the source master cell group is maintained and the failure type is determined to be the switching failure of the connection establishment with the target master cell group, the processing mode comprises at least one of the following modes: storing second failure information of the switching failure, triggering the report of the second failure information of the switching failure, and releasing the configuration information of the target main cell; when the connection with the source master cell group is maintained, and the failure type is determined to be the switching failure of establishing the connection with the target master cell group and the radio link failure of the source master cell group, the processing mode comprises at least one of the following modes: returning to the configuration of the source main cell, storing third failure information of the switching failure and the radio link failure, triggering the report of the third failure information of the switching failure and the radio link failure, and triggering a connection reestablishment process; after the connection with the source master cell group is disconnected and the failure type is determined to be the switching failure of the connection establishment with the target master cell group, the processing mode comprises at least one of the following modes: and returning to the configuration of the source main cell, storing fourth failure information of the switching failure, triggering the report of the fourth failure information of the switching failure, and triggering a connection reestablishment process.

Optionally, disconnecting from the source master cell group comprises at least one of: rebuilding a Packet Data Convergence Protocol (PDCP) entity of the master cell group; reestablishing a Radio Link Control (RLC) entity of a master cell group; resetting a Media Access Control (MAC) entity of a master cell group; the configuration of the target master cell group is adopted.

Optionally, the first failure information, the second failure information, the third failure information, and the fourth failure information each include at least one of: public land mobile network PLMN identification information of the source primary cell and/or the target primary cell; the latest serving cell and/or frequency point identification; the latest serving cell and/or frequency point measurement information; identification of adjacent cells and/or frequency points; neighbor cell and/or frequency point measurement information; geographical location information of User Equipment (UE); a cell identity where the connection failure occurs; the area identification of the cell in which the connection failure occurs; time information when the connection failure occurs; DRB information is carried by data radio established by User Equipment (UE); a serving cell identity of a user equipment UE; a first failure type indication of the connection failure.

Optionally, the first failure type indication comprises at least one of: radio link failure indication, handover failure indication.

Optionally, the radio link failure indication is used to indicate at least one of: physical layer desynchronization; the random access of the media access control MAC layer fails; the radio link controls the RLC layer to reach the maximum number of retransmissions.

Optionally, when the first failure information, the second failure information, the third failure information, or the fourth failure information is stored, the method further includes one of: clearing other failure information stored before; storing the first failure information, the second failure information, the third failure information, or the fourth failure information while retaining other previously stored failure information.

Optionally, the triggering of reporting of the first failure information, the second failure information, the third failure information, or the fourth failure information includes at least one of: sending the first failure information, the second failure information, the third failure information or the fourth failure information to a source base station, where the first failure information, the second failure information, the third failure information or the fourth failure information is used to instruct the source base station to forward the first failure information, the second failure information, the third failure information or the fourth failure information to a target base station, and provide failure indication information used to indicate the connection failure; sending the first failure information, the second failure information, the third failure information or the fourth failure information to a target base station, where the first failure information, the second failure information, the third failure information or the fourth failure information is used to instruct the target base station to forward the first failure information, the second failure information, the third failure information or the fourth failure information to a source base station, and provide failure indication information used to indicate the connection failure; and sending the first failure information, the second failure information, the third failure information or the fourth failure information to other base stations except for a source base station and a target base station, wherein the first failure information, the second failure information, the third failure information or the fourth failure information is used for indicating the other base stations to forward the first failure information, the second failure information, the third failure information or the fourth failure information to the source base station and/or the target base station, and providing failure indication information for indicating the connection failure.

Optionally, when the change command is used to instruct to change the secondary cell group, determining a failure type of connection failure and performing connection failure processing in a processing manner corresponding to the failure type includes: when the connection with the source secondary cell group is maintained and the failure type is determined to be the radio link failure of the source secondary cell group and/or the maximum uplink transmission timing difference is exceeded, the processing mode comprises at least one of the following modes: storing the fifth failure information of the radio link failure and/or the exceeding of the maximum uplink transmission timing difference, stopping receiving and transmitting data on the auxiliary cell group, triggering the report of the fifth failure information of the radio link failure and/or the exceeding of the maximum uplink transmission timing difference, and disconnecting the connection with the source auxiliary cell group; when the connection with the source secondary cell group is maintained and the failure type is determined to be the failure of the secondary cell group change for establishing the connection with the target secondary cell group, the processing mode comprises at least one of the following modes: storing sixth failure information of the secondary cell group change failure, triggering the report of the sixth failure information of the secondary cell group change failure, and releasing the configuration information of the target secondary cell; when the connection with the source secondary cell group is maintained, and the failure type is determined to be the secondary cell group change failure of establishing the connection with the target secondary cell group, and the radio link failure and/or the maximum uplink transmission timing difference of the source secondary cell group are/is exceeded, the processing mode comprises at least one of the following modes: storing seventh failure information when the secondary cell group fails to change and the radio link fails and/or exceeds the maximum uplink transmission timing difference, stopping receiving and transmitting data on the secondary cell group, resetting a Media Access Control (MAC) entity of the secondary cell group, and triggering the seventh failure information when the secondary cell group fails to change and the radio link fails and/or exceeds the maximum uplink transmission timing difference to be reported; after the connection with the source auxiliary cell group is disconnected and the failure type is determined to be the auxiliary cell group change failure of establishing the connection with the target auxiliary cell group, the processing mode comprises at least one of the following modes: and storing the eighth failure information of the failure of the change of the auxiliary cell group, stopping receiving and transmitting data on the auxiliary cell group, resetting the MAC entity of the auxiliary cell group, and triggering the report of the eighth failure information of the failure of the change of the auxiliary cell group.

Optionally, disconnecting from the source secondary cell group comprises at least one of: rebuilding a secondary cell group packet data convergence protocol PDCP entity; a Radio Link Control (RLC) entity of the auxiliary cell group is reconstructed; resetting a Media Access Control (MAC) entity of the auxiliary cell group; and adopting the configuration of the target secondary cell group.

Optionally, the fifth failure information, the sixth failure information, the seventh failure information, and the eighth failure information each include at least one of: public land mobile network PLMN identification information of the source main auxiliary cell and/or the target main auxiliary cell; the latest serving cell and/or frequency point identification; the latest serving cell and/or frequency point measurement information; identification of adjacent cells and/or frequency points; neighbor cell and/or frequency point measurement information; geographical location information of User Equipment (UE); a cell identity where the connection failure occurs; the area identification of the cell in which the connection failure occurs; time information when the connection failure occurs; DRB information is carried by data radio established by User Equipment (UE); a serving cell identity of a user equipment UE; a second failure type indication of the connection failure.

Optionally, the second failure type indication comprises at least one of: radio link failure indication, secondary cell group change failure indication, exceeding maximum uplink transmission timing difference indication.

Optionally, when the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information is stored, the method further includes one of: clearing other failure information stored before; storing the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information while retaining other previously stored failure information.

Optionally, the triggering of reporting of the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information includes at least one of: sending the fifth failure information, the sixth failure information, the seventh failure information or the eighth failure information to a source base station, where the fifth failure information, the sixth failure information, the seventh failure information or the eighth failure information is used to instruct the source base station to forward the fifth failure information, the sixth failure information, the seventh failure information or the eighth failure information to a target base station, and provide failure indication information used to indicate the connection failure; sending the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to a target base station, where the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information is used to instruct the target base station to forward the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to a source base station, and provide failure indication information used to indicate the connection failure; and sending the fifth failure information, the sixth failure information, the seventh failure information or the eighth failure information to other base stations except for the source base station and the target base station, wherein the fifth failure information, the sixth failure information, the seventh failure information or the eighth failure information is used for instructing the other base stations to forward the fifth failure information, the sixth failure information, the seventh failure information or the eighth failure information to the source base station and/or the target base station, and providing failure indication information for indicating the connection failure.

In an embodiment of the present invention, there is also provided an apparatus, including: a receiving module for receiving a change command for instructing a cell group change; a determining module, configured to determine that a connection with a source cell group and/or a target cell group fails when a cell group change is performed according to the change command; and the processing module is used for determining the failure type of the connection failure and adopting a processing mode corresponding to the failure type to carry out the connection failure processing.

Optionally, when the change command is used to indicate a master cell group change is made, the processing module comprises one of: the first processing unit is used for, when the connection is kept with the source master cell group and the failure type is determined to be the radio link failure of the source master cell group, the processing mode comprises at least one of the following: storing first failure information of radio link failure, stopping receiving and transmitting data on the main cell group, triggering the report of the first failure information of radio link failure, and disconnecting the connection with the source main cell group; the second processing unit is used for, when the connection is kept with the source master cell group and the failure type is determined to be the handover failure of establishing the connection with the target master cell group, the processing mode comprises at least one of the following modes: storing second failure information of the switching failure, triggering the report of the second failure information of the switching failure, and releasing the configuration information of the target main cell; a third processing unit, configured to, when maintaining a connection with the source master cell group and determining that the failure type is a handover failure for establishing a connection with the target master cell group and a radio link failure of the source master cell group, perform at least one of the following processing modes: returning to the configuration of the source main cell, storing third failure information of the switching failure and the radio link failure, triggering the report of the third failure information of the switching failure and the radio link failure, and triggering a connection reestablishment process; the fourth processing unit, after the connection with the source master cell group is disconnected and when the failure type is determined to be a handover failure for establishing a connection with the target master cell group, the processing mode includes at least one of the following: and returning to the configuration of the source main cell, storing fourth failure information of the switching failure, triggering the report of the fourth failure information of the switching failure, and triggering a connection reestablishment process.

Optionally, when the change command is used to indicate a secondary cell group change is made, the processing module comprises one of: a fifth processing unit, configured to, when maintaining a connection with the source secondary cell group and determining that the failure type is a radio link failure of the source secondary cell group and/or exceeds a maximum uplink transmission timing difference, perform a processing manner that includes at least one of: storing the fifth failure information of the radio link failure and/or the exceeding of the maximum uplink transmission timing difference, stopping receiving and transmitting data on the auxiliary cell group, triggering the report of the fifth failure information of the radio link failure and/or the exceeding of the maximum uplink transmission timing difference, and disconnecting the connection with the source auxiliary cell group; a sixth processing unit, configured to, when maintaining a connection with the source secondary cell group and determining that the failure type is a secondary cell group change failure to establish a connection with the target secondary cell group, perform the processing in at least one of the following manners: storing sixth failure information of the secondary cell group change failure, triggering the report of the sixth failure information of the secondary cell group change failure, and releasing the configuration information of the target secondary cell; a seventh processing unit, configured to, when maintaining a connection with the source secondary cell group and determining that the failure type is a secondary cell group change failure to establish a connection with the target secondary cell group and a radio link failure of the source secondary cell group and/or exceeding a maximum uplink transmission timing difference, perform at least one of the following processing modes: storing seventh failure information when the secondary cell group fails to change and the radio link fails and/or exceeds the maximum uplink transmission timing difference, stopping receiving and transmitting data on the secondary cell group, resetting a Media Access Control (MAC) entity of the secondary cell group, and triggering the seventh failure information when the secondary cell group fails to change and the radio link fails and/or exceeds the maximum uplink transmission timing difference to be reported; an eighth processing unit, configured to, after disconnecting from the source secondary cell group and when determining that the failure type is a secondary cell group change failure to establish a connection with the target secondary cell group, perform the processing in at least one of the following manners: and storing the eighth failure information of the failure of the change of the auxiliary cell group, stopping receiving and transmitting data on the auxiliary cell group, resetting the MAC entity of the auxiliary cell group, and triggering the report of the eighth failure information of the failure of the change of the auxiliary cell group.

According to still another embodiment of the present invention, there is also provided a storage medium. The storage medium is configured to store program code for performing the above steps.

According to the invention, when the connection failure with the source cell group and/or the target cell group is determined, the failure type of the connection failure is determined and the connection failure processing is carried out by adopting the processing mode corresponding to the failure type, so that the problems of radio connection failure and data interruption generated in the radio connection process in the related technology can be solved, and the effect of more quickly recovering connection and data transmission when the user equipment encounters the radio link problem is achieved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

fig. 1 is a flowchart of handover signaling in the related art;

fig. 2 is a block diagram of a mobile terminal according to an embodiment of the present invention;

FIG. 3 is a flow diagram of a method according to an embodiment of the invention;

FIG. 4 is a flow diagram of handover process failure handling in an exemplary embodiment in accordance with the invention;

fig. 5 is a flow chart of a secondary cell group change procedure failure process in an embodiment of the present invention;

fig. 6 is a block diagram of a processing apparatus for cell connection failure according to an embodiment of the present invention;

FIG. 7 is a block diagram of the structure of the processing module 66 according to an embodiment of the invention;

fig. 8 is a block diagram of the structure of the processing module 66 according to an embodiment of the present invention (two).

Detailed Description

The invention will be described in detail hereinafter with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order.

The method provided by the embodiment of the application can be executed in a mobile terminal, a computer terminal or a similar operation device. Taking the operation on the mobile terminal as an example, fig. 2 is a block diagram of a hardware structure of the mobile terminal of the method for processing cell connection failure according to the embodiment of the present invention. As shown in fig. 2, the mobile terminal 20 may include one or more (only one shown in fig. 2) processors 202 (the processors 202 may include, but are not limited to, a processing device such as a microprocessor MCU or a programmable logic device FPGA), a memory 204 for storing data, and a transmission device 206 for communication functions. It will be understood by those skilled in the art that the structure shown in fig. 2 is only an illustration and is not intended to limit the structure of the electronic device. For example, the mobile terminal 20 may also include more or fewer components than shown in FIG. 2, or have a different configuration than shown in FIG. 2.

The memory 204 may be used to store software programs and modules of application software, such as program commands/modules corresponding to the processing method for cell connection failure in the embodiment of the present invention, and the processor 202 executes various functional applications and data processing by running the software programs and modules stored in the memory 204, so as to implement the method described above. Memory 204 may include high speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some examples, the memory 204 may further include memory located remotely from the processor 202, which may be connected to the mobile terminal 20 via a network. Examples of such networks include, but are not limited to, the internet, intranets, local area networks, mobile communication networks, and combinations thereof.

The transmission means 206 is used for receiving or transmitting data via a network. Specific examples of the network described above may include a wireless network provided by a communication provider of the mobile terminal 20. In one example, the transmission device 206 includes a Network adapter (NIC), which can be connected to other Network devices through a base station so as to communicate with the internet. In one example, the transmission device 206 can be a Radio Frequency (RF) module, which is used for communicating with the internet in a wireless manner.

In this embodiment, a method for processing a cell connection failure of a mobile terminal is provided, and fig. 3 is a flowchart of a method according to an embodiment of the present invention, as shown in fig. 3, the method includes the following steps:

step S302, receiving a change command for instructing a cell group change;

step S304, when the cell group is changed according to the change command, determining that the connection with the source cell group and/or the target cell group fails;

step S306, determining the failure type of the connection failure and adopting the processing mode corresponding to the failure type to process the connection failure.

Through the steps, when the connection failure with the source cell group and/or the target cell group is determined, the failure type of the connection failure is determined, and the connection failure processing is performed by adopting the processing mode corresponding to the failure type, so that the problems of radio connection failure and data interruption generated in the radio connection process in the related technology can be solved, and the effect of more quickly recovering connection and data transmission when the user equipment encounters the radio link problem is achieved.

Optionally, the main body of the above steps may be a terminal, but is not limited thereto.

In an optional implementation, when the change command is used to instruct a change of a master cell group, determining a failure type of a connection failure and performing a connection failure process in a processing manner corresponding to the failure type includes: when the connection is kept with the source master cell group and the failure type is determined to be the radio link failure of the source master cell group, the processing mode comprises at least one of the following modes: storing first failure information of radio link failure, stopping receiving and transmitting data on the main cell group, triggering the report of the first failure information of radio link failure, and disconnecting the connection with the source main cell group; when the connection is kept with the source master cell group and the failure type is determined to be the switching failure of the connection establishment with the target master cell group, the processing mode comprises at least one of the following modes: storing second failure information of the switching failure, triggering the report of the second failure information of the switching failure, and releasing the configuration information of the target main cell; when the connection with the source master cell group is maintained and the failure types are determined to be the switching failure of the connection establishment with the target master cell group and the radio link failure of the source master cell group, the processing mode comprises at least one of the following steps: returning to the configuration of the source main cell, storing third failure information of the switching failure and the radio link failure, triggering the report of the third failure information of the switching failure and the radio link failure, and triggering a connection reestablishment process; after the connection with the source master cell group is disconnected and the failure type is determined to be the switching failure of the connection established with the target master cell group, the processing mode comprises at least one of the following modes: and returning to the configuration of the source main cell, storing fourth failure information of the switching failure, triggering the report of the fourth failure information of the switching failure, and triggering a connection reestablishment process.

In an alternative implementation, the disconnecting from the source master cell group includes at least one of: rebuilding a Packet Data Convergence Protocol (PDCP) entity of the master cell group; reestablishing a Radio Link Control (RLC) entity of a master cell group; resetting a Media Access Control (MAC) entity of a master cell group; the configuration of the target master cell group is adopted.

In an optional implementation, the first failure information, the second failure information, the third failure information, and the fourth failure information each include at least one of: public land mobile network PLMN identification information of the source primary cell and/or the target primary cell; a latest serving cell and/or frequency point identification (the latest serving cell may be a source primary cell or a target primary cell); the latest serving cell and/or frequency point measurement information; a neighbor cell and/or a frequency point identifier (the neighbor cell is a neighbor of the latest serving cell, and may be a neighbor cell of the source master cell group or a neighbor cell of the target master cell group); neighbor cell and/or frequency point measurement information; geographical location information of User Equipment (UE); cell identification where the connection failure occurs; area identification of the cell in which the connection failure occurs; time information of occurrence of the connection failure; DRB information is carried by data radio established by User Equipment (UE); a serving cell identity of a user equipment UE; a first failure type indication of the connection failure.

In an alternative implementation, the first failure type indication includes at least one of: radio link failure indication, handover failure indication.

In an alternative implementation, the radio link failure indication is used to indicate at least one of: physical layer desynchronization; the random access of the media access control MAC layer fails; the radio link controls the RLC layer to reach the maximum number of retransmissions.

In an optional implementation, when the first failure information, the second failure information, the third failure information, or the fourth failure information is stored, the method further includes one of: clearing other failure information stored before; the first failure information, the second failure information, the third failure information, or the fourth failure information is stored while retaining other failure information stored before.

In an optional implementation, triggering the report of the first failure information, the second failure information, the third failure information, or the fourth failure information includes at least one of: transmitting the first failure information, the second failure information, the third failure information, or the fourth failure information to a source base station, wherein the first failure information, the second failure information, the third failure information, or the fourth failure information is used to instruct the source base station to forward the first failure information, the second failure information, the third failure information, or the fourth failure information to a target base station, and to provide failure indication information for indicating the connection failure; transmitting the first failure information, the second failure information, the third failure information, or the fourth failure information to a target base station, wherein the first failure information, the second failure information, the third failure information, or the fourth failure information is used to instruct the target base station to forward the first failure information, the second failure information, the third failure information, or the fourth failure information to a source base station, and to provide failure indication information for indicating the connection failure; and transmitting the first failure information, the second failure information, the third failure information or the fourth failure information to other base stations except for a source base station and a target base station, wherein the first failure information, the second failure information, the third failure information or the fourth failure information is used for instructing the other base stations to forward the first failure information, the second failure information, the third failure information or the fourth failure information to the source base station and/or the target base station, and providing failure indication information for indicating the connection failure.

In an optional implementation, when the change command is used to instruct to change the secondary cell group, determining a failure type of connection failure and performing connection failure processing in a processing manner corresponding to the failure type includes: when the connection with the source secondary cell group is maintained and the failure type is determined to be the radio link failure of the source secondary cell group and/or the maximum uplink transmission timing difference is exceeded, the processing mode comprises at least one of the following modes: storing the fifth failure information of the radio link failure and/or the exceeding of the maximum uplink transmission timing difference, stopping receiving and transmitting data on the auxiliary cell group, triggering the report of the fifth failure information of the radio link failure and/or the exceeding of the maximum uplink transmission timing difference, and disconnecting the connection with the source auxiliary cell group; when the connection with the source auxiliary cell group is maintained and the failure type is determined to be the auxiliary cell group change failure of the connection with the target auxiliary cell group, the processing mode comprises at least one of the following modes: storing sixth failure information of the secondary cell group change failure, triggering the report of the sixth failure information of the secondary cell group change failure, and releasing the configuration information of the target secondary cell; when the connection with the source auxiliary cell group is maintained, and the failure type is determined to be the auxiliary cell group change failure of the connection with the target auxiliary cell group, and the radio link failure and/or the maximum uplink transmission timing difference of the source auxiliary cell group are/is exceeded, the processing mode comprises at least one of the following steps: storing seventh failure information when the secondary cell group fails to change and the radio link fails and/or exceeds the maximum uplink transmission timing difference, stopping receiving and transmitting data on the secondary cell group, resetting a Media Access Control (MAC) entity of the secondary cell group, and triggering the seventh failure information when the secondary cell group fails to change and the radio link fails and/or exceeds the maximum uplink transmission timing difference to be reported; after the connection with the source auxiliary cell group is disconnected and the failure type is determined to be the auxiliary cell group change failure of the connection with the target auxiliary cell group, the processing mode comprises at least one of the following modes: and storing the eighth failure information of the secondary cell group change failure, stopping receiving and transmitting data on the secondary cell group, resetting a Media Access Control (MAC) entity of the secondary cell group, and triggering the report of the eighth failure information of the secondary cell group change failure.

In an alternative implementation, the disconnecting from the source secondary cell group includes at least one of: rebuilding a secondary cell group packet data convergence protocol PDCP entity; a Radio Link Control (RLC) entity of the auxiliary cell group is reconstructed; resetting a Media Access Control (MAC) entity of the auxiliary cell group; and adopting the configuration of the target secondary cell group.

In an optional implementation, the fifth failure information, the sixth failure information, the seventh failure information, and the eighth failure information each include at least one of: public land mobile network PLMN identification information of the source main auxiliary cell and/or the target main auxiliary cell; the latest serving cell and/or frequency point identification; the latest serving cell and/or frequency point measurement information; identification of adjacent cells and/or frequency points; neighbor cell and/or frequency point measurement information; geographical location information of User Equipment (UE); cell identification where the connection failure occurs; area identification of the cell in which the connection failure occurs; time information of occurrence of the connection failure; DRB information is carried by data radio established by User Equipment (UE); the serving cell of the user equipment UE identifies the second failure type indication of the connection failure.

In an alternative implementation, the second failure type indication includes at least one of: radio link failure indication, secondary cell group change failure indication, exceeding maximum uplink transmission timing difference indication.

In an optional implementation, when the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information is stored, the method further includes one of: clearing other failure information stored before; the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information is stored while retaining the other failure information stored before.

In an optional implementation, triggering the report of the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information includes at least one of: transmitting the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to a source base station, wherein the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information is used to instruct the source base station to forward the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to a target base station, and to provide failure indication information for indicating the connection failure; transmitting the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to a target base station, wherein the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information is used to instruct the target base station to forward the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to a source base station, and provide failure indication information used to indicate the connection failure; and transmitting the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to other base stations except for the source base station and the target base station, wherein the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information is used for instructing the other base stations to forward the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to the source base station and/or the target base station, and providing failure indication information for indicating the connection failure.

The invention is illustrated below with reference to specific examples:

specific example 1: and processing the failure of the switching process.

Fig. 4 is a flowchart of handover procedure failure processing according to an embodiment of the present invention:

step 1: the UE receives the handover command and requests to maintain the connection in the source cell ("Reception of HO CMD" in FIG. 4).

Step 2: the UE maintains a connection with the source cell (e.g., "Start 304; keep 310 running" in fig. 4).

And step 3: if the UE fails to connect, the UE distinguishes the failure type for processing, and determines whether to keep connection with the source cell (e.g., "Is the source connection released" in fig. 4):

if the source cell connection is not released and handover Failure to the target cell occurs (HO Failure as in fig. 4), the UE performs type 1 Action (Action 1 as in fig. 4);

if the source cell connection is not released and a radio link failure of the source cell occurs (as in "RLF" in fig. 4), the UE performs a type 2 Action (as in Action 2 in fig. 4);

if the source cell connection is not released and a handover Failure to the target cell occurs (e.g., "HO Failure" in fig. 4), followed by a radio link Failure of the source cell (e.g., "RLF" in fig. 4), the UE performs a type 3 Action (e.g., "Action 3" in fig. 4);

if the source cell connection has been released and a handover Failure to the target cell has occurred (e.g., "HO Failure" in fig. 4), the UE performs type 3 Action (e.g., Action3 in fig. 4).

The type 1 behaviors include:

storing the failure related information;

triggering the report of failure information;

and releasing the configuration information of the target cell.

The class 2 behaviors include:

storing the failure related information;

stopping the receiving and sending of the main cell group data;

triggering the report of failure information;

the connection to the source master cell group is broken.

The type 3 behaviors include:

configuration of fallback to source cell

Storing the failure related information;

triggering the report of failure information;

triggering a connection re-establishment procedure.

Wherein the disconnection from the source master cell group appears as:

rebuilding a PDCP entity;

reconstructing an RLC entity;

resetting the MAC entity;

the configuration of the target master cell group is adopted.

Wherein the failure-related information comprises:

PLMN identification information;

previous serving cell and/or frequency point identification;

previous serving cell and/or frequency point measurement information;

identification of adjacent cells and/or frequency points;

neighbor cell and/or frequency point measurement information;

geographic location information;

a cell identity where a failure occurs;

the area identification which fails to occur;

time information of occurrence of failure;

DRB information established by the UE;

an identity of a serving cell of the UE;

a failure type indication;

wherein the failure type indication comprises:

a radio link failure;

the handover fails.

Wherein the radio link failure indication may be one of the following according to the type of failure:

physical layer desynchronization; random access of the MAC layer fails; an indication of the maximum number of retransmissions reached by the RLC layer.

And 4, step 4: the UE indicates to the network side that the radio link failure information is available.

And 5: the network side sends request information to the UE to request the UE to report the radio link failure information.

Step 6: and the UE reports the radio link failure information to the network side.

And 7: after receiving the radio link failure report reported by the UE, the source/target base station may forward the radio link failure report to the target/source base station, and indicate that the UE has failed to connect.

Specific example 2: failure handling of the secondary cell group change procedure.

Fig. 5 is a flow chart of failure handling of a secondary cell group change procedure in an embodiment of the invention:

step 1: the UE receives the secondary cell group change command and requests a connection to be maintained in the source secondary cell group (e.g., "Reception of SCG change CMD" in fig. 5).

Step 2: the UE maintains a connection with the source secondary cell group (e.g., "Start t 307; keep t313 running" in FIG. 5).

And step 3: if the UE fails to connect, the UE distinguishes the failure type for processing, and determines whether to keep connection with the source secondary cell group (e.g., "Is the source SCG connection released" in fig. 5):

if the source secondary cell group connection is not released and a change failure to the target secondary cell group occurs (e.g., "SCG change failure" in fig. 5), the UE performs a type 1 Action (e.g., Action 1 in fig. 5);

if the source secondary cell group connection is not released and a radio link failure of the source secondary cell group and/Or a maximum uplink transmission timing difference is exceeded (e.g., "SCG RLF Or UL timing error" in fig. 5) occurs, the UE performs type 2 behavior (e.g., Action 2 in fig. 5);

if the source cell connection is not released and a change failure to the target secondary cell group occurs (e.g., "SCG change failure" in fig. 5), followed by a radio link failure of the source secondary cell group and/Or a maximum uplink transmission timing difference is exceeded (e.g., "SCG RLF Or UL timing error" in fig. 5), the UE performs type 3 behavior (e.g., Action3 in fig. 5);

if the source cell connection has been released and a handover failure to the target secondary cell group has occurred (e.g., "SCG change failure" in fig. 5), then the UE performs type 3 Action (e.g., Action3 in fig. 5).

The type 1 behaviors include:

storing the failure related information;

triggering the report of failure information;

and releasing the configuration information of the target secondary cell group.

The class 2 behaviors include:

storing the failure related information;

stopping receiving and transmitting the auxiliary cell group data;

triggering the report of failure information;

disconnecting the connection with the source auxiliary cell group;

the type 3 behaviors include:

storing the failure related information;

stopping receiving and transmitting the auxiliary cell group data;

resetting an MAC entity of the auxiliary cell group;

and triggering the report of the failure information.

Wherein the disconnection and the connection of the source secondary cell group are at least one of the following:

reconstructing a secondary cell group PDCP entity;

reconstructing an auxiliary cell group RLC entity;

and resetting the MAC entity of the secondary cell group.

And adopting the configuration of the target secondary cell group.

Wherein the failure-related information comprises:

previous service frequency point identification;

previous service frequency point measurement information;

identifying adjacent frequency points;

adjacent frequency point measurement information;

a failure type indication;

wherein the failure type indication comprises:

a radio link failure;

the secondary cell group change failed;

the maximum uplink transmission timing difference is exceeded.

the physical layer is out of sync.

The random access of the MAC layer fails.

An indication of the maximum number of retransmissions reached by the RLC layer.

And 4, step 4: and the UE reports the failure information of the secondary cell to the network side.

And 5: after receiving the radio link failure report reported by the UE, the source/target base station may forward the radio link failure report to the target/source base station, and indicate that the UE has failed to connect.

Through the above description of the embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but the former is a better implementation mode in many cases. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes commands for enabling a terminal device (such as a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.

In this embodiment, a device for processing cell connection failure is further provided, where the device is used to implement the foregoing embodiments and preferred embodiments, and details are not repeated for what has been described. As used below, the term "module" may be a combination of software and/or hardware that implements a predetermined function. Although the means described in the embodiments below are preferably implemented in software, an implementation in hardware, or a combination of software and hardware is also possible and contemplated.

Fig. 6 is a block diagram of a device for processing cell connection failure according to an embodiment of the present invention, and as shown in fig. 6, the device may include: a receiving module 62, a determining module 64, and a processing module 66, which are described below:

a receiving module 62 for receiving a change command for instructing a cell group change to be made; a determining module 64, connected to the receiving module 62, for determining that the connection with the source cell group and/or the target cell group fails when the cell group is changed according to the change command; and a processing module 66, connected to the determining module 64, for determining a failure type of the connection failure and performing connection failure processing in a processing manner corresponding to the failure type.

In an alternative embodiment, fig. 7 is a block diagram (one) of the processing module 66 according to the embodiment of the present invention, and as shown in fig. 7, when the change command is used to indicate that a master cell group change is performed, the processing module 66 may include one of the following: the processing module 66 is described below with reference to a first processing unit 72, a second processing unit 74, a third processing unit 76, and a fourth processing unit 78:

a first processing unit 72, configured to, when the connection with the source master cell group is maintained and the failure type is determined to be a radio link failure of the source master cell group, perform the processing in at least one of the following manners: storing first failure information of radio link failure, stopping receiving and transmitting data on the main cell group, triggering the report of the first failure information of radio link failure, and disconnecting the connection with the source main cell group; a second processing unit 74, configured to, when maintaining a connection with the source master cell group and determining that the type of the failure is a handover failure for establishing a connection with the target master cell group, perform at least one of the following processing manners: storing second failure information of the switching failure, triggering the report of the second failure information of the switching failure, and releasing the configuration information of the target main cell; a third processing unit 76, configured to, when maintaining a connection with the source master cell group and determining that the failure type is a handover failure for establishing a connection with the target master cell group and a radio link failure of the source master cell group, perform at least one of the following processing manners: returning to the configuration of the source main cell, storing third failure information of the switching failure and the radio link failure, triggering the report of the third failure information of the switching failure and the radio link failure, and triggering a connection reestablishment process; the fourth processing unit 78, after the connection with the source master cell group is disconnected and when it is determined that the failure type is a handover failure to establish a connection with the target master cell group, performs at least one of the following processing modes: and returning to the configuration of the source main cell, storing fourth failure information of the switching failure, triggering the report of the fourth failure information of the switching failure, and triggering a connection reestablishment process.

In an alternative embodiment, the fourth processing unit 78 may disconnect from the source master cell group by at least one of: rebuilding a Packet Data Convergence Protocol (PDCP) entity of the master cell group; reestablishing a Radio Link Control (RLC) entity of a master cell group; resetting a Media Access Control (MAC) entity of a master cell group; the configuration of the target master cell group is adopted.

In an optional embodiment, the first failure information, the second failure information, the third failure information, and the fourth failure information may each include at least one of: public land mobile network PLMN identification information of the source primary cell and/or the target primary cell; the latest serving cell and/or frequency point identification; the latest serving cell and/or frequency point measurement information; identification of adjacent cells and/or frequency points; neighbor cell and/or frequency point measurement information; geographical location information of User Equipment (UE); cell identification where the connection failure occurs; area identification of the cell in which the connection failure occurs; time information of occurrence of the connection failure; DRB information is carried by data radio established by User Equipment (UE); a serving cell identity of a user equipment UE; a first failure type indication of the connection failure.

In an alternative embodiment, the first failure type indication includes at least one of: radio link failure indication, handover failure indication.

In an alternative embodiment, the radio link failure indication is used to indicate at least one of: physical layer desynchronization; the random access of the media access control MAC layer fails; the radio link controls the RLC layer to reach the maximum number of retransmissions.

In an optional embodiment, the apparatus further comprises at least one of:

a first clearing module, configured to, when the first failure information, the second failure information, the third failure information, or the fourth failure information is stored: clearing other failure information stored before;

a first storage module, configured to, when the first failure information, the second failure information, the third failure information, or the fourth failure information is stored: the first failure information, the second failure information, the third failure information, or the fourth failure information is stored while retaining other failure information stored before.

In an optional embodiment, the first processing unit 72, the second processing unit 74, the third processing unit 76, and the fourth processing unit 78 may respectively trigger the reporting of the first failure information, the second failure information, the third failure information, or the fourth failure information by at least one of the following manners: transmitting the first failure information, the second failure information, the third failure information, or the fourth failure information to a source base station, wherein the first failure information, the second failure information, the third failure information, or the fourth failure information is used to instruct the source base station to forward the first failure information, the second failure information, the third failure information, or the fourth failure information to a target base station, and to provide failure indication information for indicating the connection failure; transmitting the first failure information, the second failure information, the third failure information, or the fourth failure information to a target base station, wherein the first failure information, the second failure information, the third failure information, or the fourth failure information is used to instruct the target base station to forward the first failure information, the second failure information, the third failure information, or the fourth failure information to a source base station, and to provide failure indication information for indicating the connection failure; and transmitting the first failure information, the second failure information, the third failure information or the fourth failure information to other base stations except for a source base station and a target base station, wherein the first failure information, the second failure information, the third failure information or the fourth failure information is used for instructing the other base stations to forward the first failure information, the second failure information, the third failure information or the fourth failure information to the source base station and/or the target base station, and providing failure indication information for indicating the connection failure.

In an alternative embodiment, fig. 8 is a block diagram (ii) of a processing module 66 according to an embodiment of the present invention, and as shown in fig. 8, when the change command is used to indicate that a master cell group change is performed, the processing module 66 may include one of the following: a fifth processing unit 82, a sixth processing unit 84, a seventh processing unit 86, and an eighth processing unit 88, which are described below with respect to the processing module 66:

a fifth processing unit 82, configured to, when the change command is used to instruct a secondary cell group change to be performed, when the connection is maintained with the source secondary cell group and the failure type is determined to be a radio link failure of the source secondary cell group and/or a maximum uplink transmission timing difference is exceeded, perform at least one of the following processing modes: storing the fifth failure information of the radio link failure and/or the exceeding of the maximum uplink transmission timing difference, stopping receiving and transmitting data on the auxiliary cell group, triggering the report of the fifth failure information of the radio link failure and/or the exceeding of the maximum uplink transmission timing difference, and disconnecting the connection with the source auxiliary cell group; a sixth processing unit 84, configured to, when the change command is used to instruct a secondary cell group change to be performed, when the secondary cell group change is determined to be a failure in maintaining a connection with the source secondary cell group and the failure type is determined to be a failure in establishing a connection with the target secondary cell group, perform at least one of the following processing modes: storing sixth failure information of the secondary cell group change failure, triggering the report of the sixth failure information of the secondary cell group change failure, and releasing the configuration information of the target secondary cell; a seventh processing unit 86, configured to, when the change command is used to instruct a secondary cell group change to be performed, when the secondary cell group change is maintained in connection with the source secondary cell group and the failure type is determined to be a secondary cell group change failure to establish a connection with the target secondary cell group and a radio link failure of the source secondary cell group and/or a maximum uplink transmission timing difference is exceeded, perform at least one of the following processing manners: storing seventh failure information when the secondary cell group fails to change and the radio link fails and/or exceeds the maximum uplink transmission timing difference, stopping receiving and transmitting data on the secondary cell group, resetting a Media Access Control (MAC) entity of the secondary cell group, and triggering the seventh failure information when the secondary cell group fails to change and the radio link fails and/or exceeds the maximum uplink transmission timing difference to be reported; an eighth processing unit 88, configured to, when the change command is used to instruct a secondary cell group change, after the connection with the source secondary cell group is disconnected and it is determined that the failure type is a secondary cell group change failure to establish a connection with the target secondary cell group, perform at least one of the following processing manners: and storing the eighth failure information of the secondary cell group change failure, stopping receiving and transmitting data on the secondary cell group, resetting a Media Access Control (MAC) entity of the secondary cell group, and triggering the report of the eighth failure information of the secondary cell group change failure.

In an alternative embodiment, the eighth processing unit 88 may disconnect from the source secondary cell group by at least one of: rebuilding a secondary cell group packet data convergence protocol PDCP entity; a Radio Link Control (RLC) entity of the auxiliary cell group is reconstructed; resetting a Media Access Control (MAC) entity of the auxiliary cell group; and adopting the configuration of the target secondary cell group.

In an optional embodiment, the fifth failure information, the sixth failure information, the seventh failure information, and the eighth failure information may each include at least one of: public land mobile network PLMN identification information of the source main auxiliary cell and/or the target main auxiliary cell; the latest serving cell and/or frequency point identification; the latest serving cell and/or frequency point measurement information; identification of adjacent cells and/or frequency points; neighbor cell and/or frequency point measurement information; geographical location information of User Equipment (UE); cell identification where the connection failure occurs; area identification of the cell in which the connection failure occurs; time information of occurrence of the connection failure; DRB information is carried by data radio established by User Equipment (UE); the serving cell of the user equipment UE identifies the second failure type indication of the connection failure.

In an alternative embodiment, the second failure type indication includes at least one of: radio link failure indication, secondary cell group change failure indication, exceeding maximum uplink transmission timing difference indication.

In an optional embodiment, the apparatus further comprises: a second clearing module and a second storage module, and the device is explained as follows:

a second clearing module, configured to clear other previously stored failure information when the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information is stored;

and a second storage module configured to store the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information while retaining other previously stored failure information when storing the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information.

In an optional embodiment, the reporting of the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information is triggered by at least one of the following manners: transmitting the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to a source base station, wherein the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information is used to instruct the source base station to forward the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to a target base station, and to provide failure indication information for indicating the connection failure; transmitting the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to a target base station, wherein the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information is used to instruct the target base station to forward the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to a source base station, and provide failure indication information used to indicate the connection failure; and transmitting the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to other base stations except for the source base station and the target base station, wherein the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information is used for instructing the other base stations to forward the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to the source base station and/or the target base station, and providing failure indication information for indicating the connection failure.

It should be noted that, the above modules may be implemented by software or hardware, and for the latter, the following may be implemented, but not limited to: the modules are all positioned in the same processor; alternatively, the modules are respectively located in different processors in any combination.

The embodiment of the invention also provides a storage medium. Alternatively, in the present embodiment, the storage medium may be configured to store program codes for executing the above steps.

Optionally, in this embodiment, the storage medium may include, but is not limited to: various media capable of storing program codes, such as a usb disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic disk, or an optical disk.

Alternatively, in the present embodiment, the processor executes the above steps according to the program code stored in the storage medium.

Optionally, the specific examples in this embodiment may refer to the examples described in the above embodiments and optional implementation manners, and this embodiment is not described herein again.

It will be apparent to those skilled in the art that the modules or steps of the present invention described above may be implemented by a general purpose computing device, they may be centralized on a single computing device or distributed across a network of multiple computing devices, and alternatively, they may be implemented by program code executable by a computing device, such that they may be stored in a storage device and executed by a computing device, and in some cases, the steps shown or described may be performed in an order different than that described herein, or they may be separately fabricated into individual integrated circuit modules, or multiple ones of them may be fabricated into a single integrated circuit module. Thus, the present invention is not limited to any specific combination of hardware and software.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for handling cell connection failure, comprising:

receiving a change command indicating a cell group change is made;

determining that a connection with a source cell group and/or a target cell group fails when a cell group change is performed according to the change command;

determining a failure type of connection failure and adopting a processing mode corresponding to the failure type to perform connection failure processing;

when the change command is used for indicating the change of the master cell group, determining a failure type of connection failure and performing connection failure processing by adopting a processing mode corresponding to the failure type comprises the following steps:

when the connection with the source master cell group is kept and the failure type is determined to be the radio link failure of the source master cell group, the processing mode comprises the following steps: storing first failure information of radio link failure, stopping receiving and transmitting data on the main cell group, triggering the report of the first failure information of radio link failure, and disconnecting the connection with the source main cell group;

when the connection with the source master cell group is maintained and the failure type is determined to be the switching failure of the connection establishment with the target master cell group, the processing mode comprises the following steps: storing second failure information of the switching failure, triggering the report of the second failure information of the switching failure, and releasing the configuration information of the target main cell;

when the connection with the source master cell group is maintained and the failure type is determined to be the switching failure of the connection establishment with the target master cell group and the radio link failure of the source master cell group, the processing mode comprises the following steps: returning to the configuration of the source main cell, storing third failure information of the switching failure and the radio link failure, triggering the report of the third failure information of the switching failure and the radio link failure, and triggering a connection reestablishment process;

after the connection with the source master cell group is disconnected and the failure type is determined to be the switching failure of establishing the connection with the target master cell group, the processing mode comprises the following steps: returning to the configuration of the source main cell, storing fourth failure information of the switching failure, triggering the report of the fourth failure information of the switching failure, and triggering a connection reestablishment process;

when the change command is used for indicating the change of the secondary cell group, determining a failure type of connection failure and adopting a processing mode corresponding to the failure type to perform connection failure processing comprises the following steps:

when the source and secondary cell groups are kept connected and the failure type is determined to be the radio link failure of the source and secondary cell group and/or exceeds the maximum uplink transmission timing difference, the processing mode comprises the following steps: storing the fifth failure information of the radio link failure and/or the exceeding of the maximum uplink transmission timing difference, stopping receiving and transmitting data on the auxiliary cell group, triggering the report of the fifth failure information of the radio link failure and/or the exceeding of the maximum uplink transmission timing difference, and disconnecting the connection with the source auxiliary cell group;

when the connection with the source auxiliary cell group is maintained and the failure type is determined to be the auxiliary cell group change failure of the connection with the target auxiliary cell group, the processing mode comprises the following steps: storing sixth failure information of the secondary cell group change failure, triggering the report of the sixth failure information of the secondary cell group change failure, and releasing the configuration information of the target secondary cell;

when the connection with the source auxiliary cell group is maintained, and the failure type is determined to be the auxiliary cell group change failure of the connection with the target auxiliary cell group, and the radio link failure and/or the maximum uplink transmission timing difference of the source auxiliary cell group are/is exceeded, the processing mode comprises the following steps: storing seventh failure information when the secondary cell group fails to change and the radio link fails and/or exceeds the maximum uplink transmission timing difference, stopping receiving and transmitting data on the secondary cell group, resetting a Media Access Control (MAC) entity of the secondary cell group, and triggering the seventh failure information when the secondary cell group fails to change and the radio link fails and/or exceeds the maximum uplink transmission timing difference to be reported;

after the connection with the source auxiliary cell group is disconnected and the failure type is determined to be the auxiliary cell group change failure of the connection with the target auxiliary cell group, the processing mode comprises the following steps: and storing the eighth failure information of the failure of the change of the auxiliary cell group, stopping receiving and transmitting data on the auxiliary cell group, resetting the MAC entity of the auxiliary cell group, and triggering the report of the eighth failure information of the failure of the change of the auxiliary cell group.

2. The method of claim 1, wherein disconnecting from the source master cell group comprises at least one of:

rebuilding a Packet Data Convergence Protocol (PDCP) entity of the master cell group;

reestablishing a Radio Link Control (RLC) entity of a master cell group;

resetting a Media Access Control (MAC) entity of a master cell group;

the configuration of the target master cell group is adopted.

3. The method of claim 1, wherein the first failure information, the second failure information, the third failure information, and the fourth failure information each comprise at least one of:

public land mobile network PLMN identification information of the source primary cell and/or the target primary cell;

the latest serving cell and/or frequency point identification;

the latest serving cell and/or frequency point measurement information;

identification of adjacent cells and/or frequency points;

neighbor cell and/or frequency point measurement information;

geographical location information of User Equipment (UE);

a cell identity where the connection failure occurs;

the area identification of the cell in which the connection failure occurs;

time information when the connection failure occurs;

DRB information is carried by data radio established by User Equipment (UE);

a serving cell identity of a user equipment UE;

a first failure type indication of the connection failure.

4. The method of claim 3, wherein the first failure type indication comprises at least one of:

radio link failure indication, handover failure indication.

5. The method of claim 4, wherein the radio link failure indication indicates at least one of:

physical layer desynchronization;

the random access of the media access control MAC layer fails;

the radio link controls the RLC layer to reach the maximum number of retransmissions.

6. The method of claim 1, wherein when storing the first failure information, the second failure information, the third failure information, or the fourth failure information, the method further comprises one of:

clearing other failure information stored before;

storing the first failure information, the second failure information, the third failure information, or the fourth failure information while retaining other previously stored failure information.

7. The method of claim 1, wherein triggering the reporting of the first failure information, the second failure information, the third failure information, or the fourth failure information comprises at least one of:

sending the first failure information, the second failure information, the third failure information or the fourth failure information to a source base station, where the first failure information, the second failure information, the third failure information or the fourth failure information is used to instruct the source base station to forward the first failure information, the second failure information, the third failure information or the fourth failure information to a target base station, and provide failure indication information used to indicate the connection failure;

sending the first failure information, the second failure information, the third failure information or the fourth failure information to a target base station, where the first failure information, the second failure information, the third failure information or the fourth failure information is used to instruct the target base station to forward the first failure information, the second failure information, the third failure information or the fourth failure information to a source base station, and provide failure indication information used to indicate the connection failure;

and sending the first failure information, the second failure information, the third failure information or the fourth failure information to other base stations except for a source base station and a target base station, wherein the first failure information, the second failure information, the third failure information or the fourth failure information is used for indicating the other base stations to forward the first failure information, the second failure information, the third failure information or the fourth failure information to the source base station and/or the target base station, and providing failure indication information for indicating the connection failure.

8. The method of claim 7, wherein disconnecting from the source secondary cell group comprises at least one of:

rebuilding a secondary cell group packet data convergence protocol PDCP entity;

a Radio Link Control (RLC) entity of the auxiliary cell group is reconstructed;

resetting a Media Access Control (MAC) entity of the auxiliary cell group;

and adopting the configuration of the target secondary cell group.

9. The method of claim 8, wherein the fifth failure information, the sixth failure information, the seventh failure information, and the eighth failure information each comprise at least one of:

source main auxiliary cell and/or target main auxiliary cell public land mobile network PLMN identification information;

the latest serving cell and/or frequency point identification;

the latest serving cell and/or frequency point measurement information;

identification of adjacent cells and/or frequency points;

neighbor cell and/or frequency point measurement information;

geographical location information of User Equipment (UE);

a cell identity where the connection failure occurs;

the area identification of the cell in which the connection failure occurs;

time information when the connection failure occurs;

DRB information is carried by data radio established by User Equipment (UE);

serving cell identity for user equipment UE

A second failure type indication of the connection failure.

10. The method of claim 9, wherein the second failure type indication comprises at least one of:

radio link failure indication, secondary cell group change failure indication, exceeding maximum uplink transmission timing difference indication.

11. The method of claim 10, wherein the radio link failure indication indicates at least one of:

physical layer desynchronization;

the random access of the media access control MAC layer fails;

12. The method of claim 8, wherein when storing the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information, the method further comprises one of:

clearing other failure information stored before;

storing the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information while retaining other previously stored failure information.

13. The method of claim 8, wherein triggering the reporting of the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information comprises at least one of:

sending the fifth failure information, the sixth failure information, the seventh failure information or the eighth failure information to a source base station, where the fifth failure information, the sixth failure information, the seventh failure information or the eighth failure information is used to instruct the source base station to forward the fifth failure information, the sixth failure information, the seventh failure information or the eighth failure information to a target base station, and provide failure indication information used to indicate the connection failure;

sending the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to a target base station, where the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information is used to instruct the target base station to forward the fifth failure information, the sixth failure information, the seventh failure information, or the eighth failure information to a source base station, and provide failure indication information used to indicate the connection failure;

and sending the fifth failure information, the sixth failure information, the seventh failure information or the eighth failure information to other base stations except for the source base station and the target base station, wherein the fifth failure information, the sixth failure information, the seventh failure information or the eighth failure information is used for instructing the other base stations to forward the fifth failure information, the sixth failure information, the seventh failure information or the eighth failure information to the source base station and/or the target base station, and providing failure indication information for indicating the connection failure.

14. An apparatus for processing cell connection failure, comprising:

a receiving module for receiving a change command for instructing a cell group change;

a determining module, configured to determine that a connection with a source cell group and/or a target cell group fails when a cell group change is performed according to the change command;

the processing module is used for determining the failure type of the connection failure and adopting a processing mode corresponding to the failure type to carry out connection failure processing;

when the change command is to indicate a master cell group change to be made, the processing module comprises one of:

the first processing unit is configured to, when the connection with the source master cell group is maintained and the failure type is determined to be a radio link failure of the source master cell group, perform the processing manner in the following manner: storing first failure information of radio link failure, stopping receiving and transmitting data on the main cell group, triggering the report of the first failure information of radio link failure, and disconnecting the connection with the source main cell group;

a second processing unit, configured to, when maintaining a connection with the source master cell group and determining that the type of failure is a handover failure to establish a connection with the target master cell group, perform the processing manner in which: storing second failure information of the switching failure, triggering the report of the second failure information of the switching failure, and releasing the configuration information of the target main cell;

a third processing unit, configured to, when maintaining a connection with the source master cell group and determining that the type of failure is a handover failure to establish a connection with the target master cell group and a radio link failure of the source master cell group, perform the processing manner in which: returning to the configuration of the source main cell, storing third failure information of the switching failure and the radio link failure, triggering the report of the third failure information of the switching failure and the radio link failure, and triggering a connection reestablishment process;

a fourth processing unit, configured to, after disconnecting from the source master cell group and when determining that the failure type is a handover failure to establish a connection with the target master cell group, perform the processing manner in the following manner: returning to the configuration of the source main cell, storing fourth failure information of the switching failure, triggering the report of the fourth failure information of the switching failure, and triggering a connection reestablishment process;

when the change command is to indicate a secondary cell group change to be made, the processing module comprises one of:

a fifth processing unit, configured to, when maintaining a connection with the source secondary cell group and determining that the failure type is a radio link failure of the source secondary cell group and/or exceeds a maximum uplink transmission timing difference, perform the processing method in the following steps: storing the fifth failure information of the radio link failure and/or the exceeding of the maximum uplink transmission timing difference, stopping receiving and transmitting data on the auxiliary cell group, triggering the report of the fifth failure information of the radio link failure and/or the exceeding of the maximum uplink transmission timing difference, and disconnecting the connection with the source auxiliary cell group;

a sixth processing unit, configured to, when maintaining a connection with the source secondary cell group and determining that the failure type is a secondary cell group change failure to establish a connection with the target secondary cell group, perform the processing method including: storing sixth failure information of the secondary cell group change failure, triggering the report of the sixth failure information of the secondary cell group change failure, and releasing the configuration information of the target secondary cell;

a seventh processing unit, configured to, when maintaining a connection with the source secondary cell group and determining that the failure type is a secondary cell group change failure that establishes a connection with the target secondary cell group and a radio link failure of the source secondary cell group and/or a maximum uplink transmission timing difference is exceeded, perform the processing method including: storing seventh failure information when the secondary cell group fails to change and the radio link fails and/or exceeds the maximum uplink transmission timing difference, stopping receiving and transmitting data on the secondary cell group, resetting a Media Access Control (MAC) entity of the secondary cell group, and triggering the seventh failure information when the secondary cell group fails to change and the radio link fails and/or exceeds the maximum uplink transmission timing difference to be reported;

an eighth processing unit, configured to, after disconnecting from the source secondary cell group and when determining that the failure type is a secondary cell group change failure to establish a connection with the target secondary cell group, perform the processing method including: and storing the eighth failure information of the failure of the change of the auxiliary cell group, stopping receiving and transmitting data on the auxiliary cell group, resetting the MAC entity of the auxiliary cell group, and triggering the report of the eighth failure information of the failure of the change of the auxiliary cell group.