CN118488498A - Processing method and device for conditional switching, source master node and target master node - Google Patents

Abstract

The invention provides a processing method and device for condition switching, a source master node and a target master node, wherein the method comprises the following steps: the method comprises the steps that a source master node sends indication information to a target master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node; the target master node determines the configurable maximum candidate cell number based on the maximum number when selecting the target candidate PScell, so that the configured maximum candidate cell number can meet the terminal capability limit, and resource waste and even configuration failure are avoided.

Description

Processing method and device for conditional switching, source master node and target master node

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for processing conditional switching, a source master node, and a target master node.

Background

In the prior art, a condition change of a primary Secondary cell (PRIMARY SCG CELL, PSCELL) in a conditional handover (Conditional Handover, CHO) and a Secondary Node (SN) without participation of a Master Node (MN) is introduced to improve robustness in handover or PSCell change. And further introducing PSCell conditions among the SNs triggered by the MN, wherein the PSCell conditions in the SNs participated by the MN are changed, the PSCell conditions among the SNs triggered by the SN are changed and the PSCell is added.

Conditional handover with candidate PSCell is currently being studied. However, considering terminal capability limitations, i.e. the number of cells that the terminal can measure and evaluate, etc., a configurable conditional handover is the maximum number of limitations. Unlike conventional conditional handoffs, the conditional handoff procedure is initiated separately (PER CANDIDATE CELL) for each candidate cell, so the source node can ensure that the maximum number of candidate cells does not exceed the limit. However, for conditional handover with candidate PSCell, the source MN will select the candidate target MN and the candidate target MN will select the candidate SN, and the candidate target MN and the candidate target SN each determine the corresponding candidate cell, which may cause the configured conditional handover to exceed the maximum limit, thereby failing to configure, and triggering the reestablishment.

Disclosure of Invention

The invention aims to provide a processing method and device for conditional switching, a source master node and a target master node, so as to solve the problem that in the prior art, the conditional switching with candidate PSCell is easy to cause configuration to exceed the maximum limit and the configuration fails.

In order to solve the above-mentioned problems, an embodiment of the present invention provides a processing method for conditional switching, which is executed by a source master node, the method including:

and sending indication information to a target master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

The sending of the indication information to the target master node includes:

Sending a switching request message to a target main node, wherein the switching request message carries the indication information;

Or alternatively

And sending a first inter-node message to the target main node, wherein the first inter-node message carries the indication information.

Wherein the maximum number of candidate cells allowed to be configured by the target master node comprises at least one of the following:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

The maximum number of candidate cells allowed to be configured by the target master node indicated by the source master node is smaller than or equal to the maximum number of candidate cells with candidate PSCell configured by the terminal support.

Wherein the method further comprises:

And determining the maximum number of candidate cells with candidate PSCells for terminal support configuration according to the terminal capability reported by the terminal or the predetennination.

Wherein the method further comprises:

and determining the maximum number of candidate cells allowed to be configured by each target master node according to the acquired measurement result information for the neighbor cells and the maximum number of candidate cells with candidate PScell conditional switching supported by the terminal.

The embodiment of the invention also provides a processing method of the condition switching, which is executed by the target main node, and comprises the following steps:

And receiving indication information sent by a source master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

Wherein the method further comprises:

Determining the maximum number of candidate primary cell PCells allowed to be configured by the target primary node according to the maximum number indicated by the indication information;

Or alternatively

Determining a maximum number of candidate PCells allowed to be configured by a target master node and candidate PScells associated with the candidate PCells according to the maximum number indicated by the indication information;

Or alternatively

And determining the maximum number of candidate PScells allowed to be configured by the target auxiliary node corresponding to the target main node according to the maximum number indicated by the indication information.

The method for receiving the indication information sent by the source master node comprises the following steps:

Receiving a switching request message sent by a source main node, wherein the switching request message carries the indication information;

Or alternatively

And receiving a first inter-node message sent by the source main node, wherein the first inter-node message carries the indication information.

Wherein the maximum number of candidate cells allowed to be configured by the target master node comprises at least one of the following:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

The maximum number of candidate cells allowed to be configured by the target master node indicated by the source master node is smaller than or equal to the maximum number of candidate cells with candidate PSCell configured by the terminal support.

Wherein the method further comprises:

And if the number of the configured candidate cells of the target main node is larger than the maximum number indicated by the indication information, deleting the configured candidate cells by the target main node until the number of the configured candidate cells is smaller than or equal to the maximum number indicated by the indication information.

The embodiment of the invention also provides a source master node which comprises a memory, a transceiver and a processor:

A memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

and sending indication information to a target master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

Wherein the processor is further configured to read the computer program in the memory and perform the following operations:

Sending a switching request message to a target main node, wherein the switching request message carries the indication information;

Or alternatively

And sending a first inter-node message to the target main node, wherein the first inter-node message carries the indication information.

Wherein the maximum number of candidate cells allowed to be configured by the target master node comprises at least one of the following:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

The maximum number of candidate cells allowed to be configured by the target master node indicated by the source master node is smaller than or equal to the maximum number of candidate cells with candidate PSCell configured by the terminal support.

Wherein the processor is further configured to read the computer program in the memory and perform the following operations:

And determining the maximum number of candidate cells with candidate PSCells for terminal support configuration according to the terminal capability reported by the terminal or the predetennination.

Wherein the processor is further configured to read the computer program in the memory and perform the following operations:

and determining the maximum number of candidate cells allowed to be configured by each target master node according to the acquired measurement result information for the neighbor cells and the maximum number of candidate cells with candidate PScell conditional switching supported by the terminal.

The embodiment of the invention also provides a processing device for conditional switching, which is applied to the source master node and comprises:

And the sending unit is used for sending indication information to the target master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

The embodiment of the invention also provides a target master node, which comprises a memory, a transceiver and a processor:

A memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

And receiving indication information sent by a source master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

Wherein the processor is further configured to read the computer program in the memory and perform the following operations:

Determining the maximum number of candidate primary cell PCells allowed to be configured by the target primary node according to the maximum number indicated by the indication information;

Or alternatively

Determining a maximum number of candidate PCells allowed to be configured by a target master node and candidate PScells associated with the candidate PCells according to the maximum number indicated by the indication information;

Or alternatively

And determining the maximum number of candidate PScells allowed to be configured by the target auxiliary node corresponding to the target main node according to the maximum number indicated by the indication information.

Wherein the processor is further configured to read the computer program in the memory and perform the following operations:

Receiving a switching request message sent by a source main node, wherein the switching request message carries the indication information;

Or alternatively

And receiving a first inter-node message sent by the source main node, wherein the first inter-node message carries the indication information.

Wherein the maximum number of candidate cells allowed to be configured by the target master node comprises at least one of the following:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

The maximum number of candidate cells allowed to be configured by the target master node indicated by the source master node is smaller than or equal to the maximum number of candidate cells with candidate PSCell configured by the terminal support.

Wherein the processor is further configured to read the computer program in the memory and perform the following operations:

And if the number of the configured candidate cells of the target main node is larger than the maximum number indicated by the indication information, deleting the configured candidate cells by the target main node until the number of the configured candidate cells is smaller than or equal to the maximum number indicated by the indication information.

The embodiment of the invention also provides a processing device for conditional switching, which is applied to the target master node and comprises the following steps:

And the receiving unit is used for receiving the indication information sent by the source master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

Embodiments of the present invention also provide a processor-readable storage medium storing a computer program for causing the processor to perform the method as described above.

The technical scheme of the invention has at least the following beneficial effects:

In the method, the device, the source master node and the target master node for processing the conditional handover in the embodiment of the invention, the source master node indicates the maximum number of candidate cells allowed to be configured by the target master node to the target master node, and the target master node determines the maximum number of candidate cells capable of being configured based on the maximum number when selecting the target candidate PScell thereof, thereby ensuring that the maximum number of candidate cells capable of being configured can meet the limit of terminal capability, avoiding resource waste and even failure configuration.

Drawings

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present invention are applicable;

FIG. 2 is a schematic diagram showing one of the steps of a method for processing conditional switching according to an embodiment of the present invention;

FIG. 3 shows a second step of the method for processing conditional access according to the embodiment of the present invention;

FIG. 4 is a schematic diagram of a source master node according to an embodiment of the present invention;

FIG. 5 is a schematic diagram of a conditional access processing apparatus according to an embodiment of the present invention;

FIG. 6 is a schematic structural diagram of a target master node according to an embodiment of the present invention;

Fig. 7 shows a second schematic structural diagram of a conditional access processing apparatus according to an embodiment of the present invention.

Detailed Description

In order to make the technical problems, technical solutions and advantages to be solved more apparent, the following detailed description will be given with reference to the accompanying drawings and specific embodiments.

Fig. 1 shows a block diagram of a wireless communication system to which an embodiment of the present application is applicable. The wireless communication system includes a terminal device 11 and a network device 12. The terminal device 11 may also be referred to as a terminal or User Equipment (UE). It should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present application. The network side device 12 may be a base station or a core network, and it should be noted that, in the embodiment of the present application, only the base station in the NR system is taken as an example, but the specific type of the base station is not limited.

In the embodiment of the invention, the term "and/or" describes the association relation of the association objects, which means that three relations can exist, for example, a and/or B can be expressed as follows: a exists alone, A and B exist together, and B exists alone. The character "/" generally indicates that the context-dependent object is an "or" relationship.

The term "plurality" in embodiments of the present application means two or more, and other adjectives are similar.

The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments, but not all embodiments of the present application. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.

The technical scheme provided by the embodiment of the application can be suitable for various systems, in particular to a 5G system. For example, applicable systems may be global system for mobile communications (global system of mobile communication, GSM), code division multiple access (code division multiple access, CDMA), wideband code division multiple access (Wideband Code Division Multiple Access, WCDMA) universal packet Radio service (GENERAL PACKET Radio service, GPRS), long term evolution (long term evolution, LTE), LTE frequency division duplex (frequency division duplex, FDD), LTE time division duplex (time division duplex, TDD), long term evolution-advanced (long term evolution advanced, LTE-a), universal mobile system (universal mobile telecommunication system, UMTS), worldwide interoperability for microwave access (worldwide interoperability for microwave access, wiMAX), 5G New air interface (New Radio, NR) systems, and the like. Terminal devices and network devices are included in these various systems. Core network parts such as evolved packet system (Evloved PACKET SYSTEM, EPS), 5G system (5 GS), etc. may also be included in the system.

The terminal device according to the embodiment of the present application may be a device that provides voice and/or data connectivity to a user, a handheld device with a wireless connection function, or other processing devices connected to a wireless modem, etc. The names of the terminal devices may also be different in different systems, for example in a 5G system, the terminal devices may be referred to as User Equipment (UE). The wireless terminal device may communicate with one or more Core Networks (CNs) via a radio access Network (Radio Access Network, RAN), which may be mobile terminal devices such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, e.g., portable, pocket, hand-held, computer-built-in or vehicle-mounted mobile devices that exchange voice and/or data with the radio access Network. Such as Personal communication services (Personal Communication Service, PCS) phones, cordless phones, session initiation protocol (Session Initiated Protocol, SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital assistants (Personal DIGITAL ASSISTANT, PDA) and the like. The wireless terminal device may also be referred to as a system, subscriber unit (subscriber unit), subscriber station (subscriber station), mobile station (mobile station), remote station (remote station), access point (access point), remote terminal device (remote terminal), access terminal device (ACCESS TERMINAL), user terminal device (user terminal), user agent (user agent), user equipment (user device), and embodiments of the present application are not limited.

The network device according to the embodiment of the present application may be a base station, where the base station may include a plurality of cells for providing services for the terminal. A base station may also be called an access point or may be a device in an access network that communicates over the air-interface, through one or more sectors, with wireless terminal devices, or other names, depending on the particular application. The network device may be configured to exchange received air frames with internet protocol (Internet Protocol, IP) packets as a router between the wireless terminal device and the rest of the access network, which may include an Internet Protocol (IP) communication network. The network device may also coordinate attribute management for the air interface. For example, the network device according to the embodiment of the present application may be a network device (Base Transceiver Station, BTS) in a global system for mobile communications (Global System for Mobile communications, GSM) or code division multiple access (Code Division Multiple Access, CDMA), a network device (NodeB) in a wideband code division multiple access (Wide-band Code Division Multiple Access, WCDMA), an evolved network device (evolutional Node B, eNB or e-NodeB) in a long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in a 5G network architecture (next generation system), a home evolved base station (Home evolved Node B, heNB), a relay node (relay node), a home base station (femto), a pico base station (pico), etc., which are not limited in the embodiment of the present application. In some network structures, the network devices may include centralized unit (centralized unit, CU) nodes and Distributed Unit (DU) nodes, which may also be geographically separated.

Multiple-input Multiple-output (Multi Input Multi Output, MIMO) transmissions may be made between the network device and the terminal device, each using one or more antennas, and the MIMO transmissions may be Single User MIMO (SU-MIMO) or Multiple User MIMO (MU-MIMO). The MIMO transmission may be 2D-MIMO, 3D-MIMO, FD-MIMO, or massive-MIMO, or may be diversity transmission, precoding transmission, beamforming transmission, or the like, depending on the form and number of the root antenna combinations.

As shown in fig. 2, an embodiment of the present invention provides a processing method for conditional switching, which is executed by a source master node, and the method includes:

And step 201, sending indication information to a target master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

In the embodiment of the invention, the source master node indicates the maximum number of candidate cells allowed to be configured by the target master node to the target master node, and the target master node determines the maximum number of the candidate cells capable of being configured based on the maximum number when selecting the target candidate PScell thereof, so that the maximum number of the candidate cells capable of being configured can be ensured to meet the limit of terminal capability, and resource waste and even configuration failure are avoided.

In an alternative embodiment of the present invention, step 201 includes:

and sending a switching request message to a target main node, wherein the switching request message carries the indication information. For example, when initiating a conditional handover with candidate PSCell, the source master node carries the indication information in a handover request message.

In another alternative embodiment of the present invention, step 201 includes:

And sending a first inter-node message to the target main node, wherein the first inter-node message carries the indication information. Optionally, the first inter-node message is an inter-node message, such as a handover preparation message (HandoverPreparationInformation).

As an alternative embodiment, the maximum number of candidate cells allowed to be configured by the target master node includes at least one of:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

After receiving the indication information, the target master node determines the maximum number of candidate cells allowed to be configured by the target master node, and the target master node ensures that the number of candidate cells finally selected does not exceed the limit of the maximum number of candidate cells.

Optionally, in one embodiment, when the maximum number indicated by the indication information is 0, it indicates that the candidate MN or PCell configuration is not supported for conditional handover with candidate PSCell.

Alternatively, in another embodiment, the maximum number indicated by the source MN is at least 1, i.e. when the source MN does not support conditional handover with candidate PSCell for its candidate MN or PCell configuration, i.e. the indication is not sent by default.

In an alternative embodiment of the present invention, the maximum number of candidate cells allowed to be configured by the target master node indicated by the source master node is less than or equal to the maximum number of candidate cells configured by the terminal to support conditional handover with candidate pscells.

It should be noted that, in a specific implementation, there may be multiple target master nodes, where the sum of the maximum number of candidate cells allowed to be configured by the multiple target master nodes should not exceed the maximum number of candidate cells with candidate PSCell configured by the terminal supporting conditional handover.

Further, in an alternative embodiment of the present invention, the method further comprises:

And determining the maximum number of candidate cells with candidate PSCells for terminal support configuration according to the terminal capability reported by the terminal or the predetennination.

For example, the source master node receives UE capabilities reported by the UE, indicating in the UE capabilities the maximum number of candidate cells for which the UE supports configured conditional handovers with candidate pscells. As another example, the maximum number of candidate cells for conditional handover with candidate pscells that the UE is allowed to configure is predefined.

In another alternative embodiment of the present invention, the method further comprises:

And the source master node determines the maximum number of candidate cells allowed to be configured by each target master node according to the acquired measurement result information for the neighbor cells and the maximum number of candidate cells with candidate PScell conditional switching configured by the terminal support.

In summary, in the embodiment of the present invention, the source master node indicates to the target master node the maximum number of candidate cells that the target master node allows to configure, and the target master node determines the maximum number of candidate cells that can be configured based on the maximum number when selecting its target candidate PSCell, so as to ensure that the maximum number of candidate cells that is configured can meet the terminal capability limit, avoid resource waste, and even fail configuration.

As shown in fig. 3, the embodiment of the present invention further provides a processing method for conditional handover, which is executed by a target master node, where the method includes:

Step 301, receiving indication information sent by a source master node, where the indication information is used to indicate a maximum number of candidate cells allowed to be configured by the target master node.

Optionally, after receiving the indication information, the target master node determines the maximum number of candidate cells allowed to be configured by the target master node, and the target master node ensures that the number of candidate cells finally selected does not exceed the limit of the maximum number of candidate cells.

As an alternative embodiment, the method further comprises:

Determining the maximum number of candidate primary cell PCells allowed to be configured by the target primary node according to the maximum number indicated by the indication information;

Or determining the maximum number of candidate PCells allowed to be configured by a target master node and candidate PScells associated with the candidate PCells according to the maximum number indicated by the indication information;

Or determining the maximum number of candidate PSCells allowed to be configured by the target auxiliary node corresponding to the target main node according to the maximum number indicated by the indication information.

Optionally, in one embodiment, when the maximum number indicated by the indication information is 0, it indicates that the candidate MN or PCell configuration is not supported for conditional handover with candidate PSCell.

Alternatively, in another embodiment, the maximum number indicated by the source MN is at least 1, i.e. when the source MN does not support conditional handover with candidate PSCell for its candidate MN or PCell configuration, i.e. the indication is not sent by default.

In an alternative embodiment of the present invention, step 301 comprises:

and receiving a switching request message sent by a source main node, wherein the switching request message carries the indication information. For example, when initiating a conditional handover with candidate PSCell, the source master node carries the indication information in a handover request message.

In another alternative embodiment of the present invention, step 301 includes:

And receiving a first inter-node message sent by the source main node, wherein the first inter-node message carries the indication information. Optionally, the first inter-node message is an inter-node message, such as a handover preparation message (HandoverPreparationInformation).

As an alternative embodiment, the maximum number of candidate cells allowed to be configured by the target master node includes at least one of:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

After receiving the indication information, the target master node determines the maximum number of candidate cells allowed to be configured by the target master node, and the target master node ensures that the number of candidate cells finally selected does not exceed the limit of the maximum number of candidate cells.

In an alternative embodiment of the present invention, the maximum number of candidate cells allowed to be configured by the target master node indicated by the source master node is less than or equal to the maximum number of candidate cells configured by the terminal to support conditional handover with candidate pscells.

It should be noted that, in a specific implementation, there may be multiple target master nodes, where the sum of the maximum number of candidate cells allowed to be configured by the multiple target master nodes should not exceed the maximum number of candidate cells with candidate PSCell configured by the terminal supporting conditional handover.

In another possible implementation scenario of the present invention, the method further comprises:

And if the number of the configured candidate cells of the target main node is larger than the maximum number indicated by the indication information, deleting the configured candidate cells by the target main node until the number of the configured candidate cells is smaller than or equal to the maximum number indicated by the indication information.

For example, when the target primary node side has configured corresponding candidate cells and the maximum number of allowed configured candidate cells indicated by the source primary node is smaller than the number of configured candidate cells on the target primary node side, the target primary node side and the corresponding target secondary node side may delete part of configured candidate cells to ensure that the number of configured candidate cells on the target primary node side is always smaller than the maximum number of allowed configured candidate cells indicated by the source primary node.

In summary, in the embodiment of the present invention, the source master node indicates to the target master node the maximum number of candidate cells that the target master node allows to configure, and the target master node determines the maximum number of candidate cells that can be configured based on the maximum number when selecting its target candidate PSCell, so as to ensure that the maximum number of candidate cells that is configured can meet the terminal capability limit, avoid resource waste, and even fail configuration.

In order to more clearly describe the processing method of conditional switching provided by the embodiment of the present invention, the following description is made with reference to several examples.

Example 1, the source master node indicates the maximum number of candidate cells that its selected target master node is allowed to configure

The source MN determines to configure the conditional handover with candidate PSCells, the source MN selects the corresponding candidate target MN or PCell, a conditional handover request is initiated to the target MN, and indication information is added in the request, wherein the indication information indicates the maximum number of candidate cells allowed to be configured by the target MN;

the form of the indication information comprises the following modes:

the indication information is directly contained in the handover request message;

The indication information is contained in the inter-node RRC message, handoverPreparationInformation;

the indication information is contained in an inter-node message.

Example 2, the target Master node guarantees that the maximum number of candidate cells does not exceed the maximum number limit indicated by the Source Master node

Embodiment 1:

According to example 1, after receiving the indication information, the target MN selects a candidate PSCell according to the maximum number of allowed candidate cells indicated by the source MN, and sends an SN addition request to the candidate SN where the selected candidate PSCell is located.

Embodiment 2:

according to example 1, the target MN selects a candidate PSCell and sends an SN addition request to the candidate SN where its selected candidate PSCell is located. After receiving the SN addition request response message fed back by the candidate SN, the target MN determines candidate pscells to be configured according to the maximum number of allowed candidate cells indicated by the source MN. That is, specifically, when the number of candidate pscells exceeds the maximum number of allowed candidate cells indicated by the source MN, the target MN rejects part of the candidate pscells, i.e., only part of the candidate pscells and their corresponding candidate pcells are selected and fed back to the source MN. When the number of candidate pscells does not exceed the maximum number of allowed candidate cells indicated by the source MN, the target MN may receive all candidate pscells, i.e. feed back to the source MN the relevant configuration of the candidate pscells fed back by all target SNs and their corresponding candidate pcells.

Example 3, source MN indicates that candidate MN or PCell configuration with candidate PSCell is not supported for conditional handover

Embodiment 1: the minimum value of the maximum number of candidate cells indicated by the source MN may be 0. And when the maximum number is 0, it means that the candidate MN or PCell configuration is not supported with a conditional handover of the candidate PSCell. Specifically, when the maximum number of candidate cells in the conditional handover request received by the target MN or PCell is 0, the target MN or PCell will not configure its candidate PSCell cells.

Embodiment 2: the minimum value of the maximum number of candidate cells indicated by the source MN is 1. When the source MN does not support conditional handover with candidate PSCell for its candidate MN/PCell configuration, this is done by default in such a way that the indication information is not carried. That is, when the conditional handover request received by the target MN/PCell does not include the above indication information, the target MN or PCell will not configure its associated candidate PSCell cell.

Example 4 source MN triggered conditional handover configuration change/delete procedure with candidate PSCell

Step 1: the target MN side is configured with corresponding candidate cells;

step 2: the source MN sends a switching request message, wherein the message indicates the maximum number of candidate cells allowed to be configured, and the indicated maximum number is smaller than the number of candidate cells configured on the target MN side;

step 3: the target MN side determines a conditional handover configuration with a candidate PSCell to delete and optionally initiates a release or modification procedure for its target SN.

The number of candidate cells to be guaranteed and configured on the target MN side is always smaller than the maximum number of candidate cells allowed to be configured indicated on the source MN side.

As shown in fig. 4, the embodiment of the present invention further provides a source master node, including a memory 420, a transceiver 410, and a processor 400:

a memory 420 for storing a computer program; a transceiver 410 for transceiving data under the control of the processor 400; a processor 400 for reading the computer program in the memory 420 and performing the following operations:

and sending indication information to a target master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

As an alternative embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

Sending a switching request message to a target main node, wherein the switching request message carries the indication information;

Or alternatively

And sending a first inter-node message to the target main node, wherein the first inter-node message carries the indication information.

As an alternative embodiment, the maximum number of candidate cells allowed to be configured by the target master node includes at least one of:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

As an alternative embodiment, the maximum number of candidate cells allowed to be configured by the target master node indicated by the source master node is smaller than or equal to the maximum number of candidate cells configured by the terminal to support conditional handover with candidate PSCell.

As an alternative embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

And determining the maximum number of candidate cells with candidate PSCells for terminal support configuration according to the terminal capability reported by the terminal or the predetennination.

As an alternative embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

and determining the maximum number of candidate cells allowed to be configured by each target master node according to the acquired measurement result information for the neighbor cells and the maximum number of candidate cells with candidate PScell conditional switching supported by the terminal.

Wherein in fig. 4, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 400 and various circuits of memory represented by memory 420, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. Transceiver 410 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over a transmission medium, including wireless channels, wired channels, optical cables, etc. The processor 400 is responsible for managing the bus architecture and general processing, and the memory 420 may store data used by the processor 400 in performing operations.

The processor 400 may be a Central Processing Unit (CPU), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA), or complex Programmable logic device (Complex Programmable Logic Device, CPLD), or may employ a multi-core architecture.

In the embodiment of the invention, the source master node indicates the maximum number of the candidate cells allowed to be configured by the target master node to the target master node, and the target master node determines the maximum number of the candidate cells capable of being configured based on the maximum number when selecting the target candidate PScell thereof, so that the maximum number of the candidate cells capable of being configured can be ensured to meet the limit of the terminal capability, and resource waste and even configuration failure are avoided.

It should be noted that, the source master node provided in this embodiment of the present invention can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and specific details of the same parts and beneficial effects as those of the method embodiment in this embodiment are not described herein.

As shown in fig. 5, an embodiment of the present invention further provides a processing apparatus for conditional switching, which is applied to a source master node, and includes:

a sending unit 501, configured to send indication information to a target master node, where the indication information is used to indicate a maximum number of candidate cells allowed to be configured by the target master node.

As an alternative embodiment, the transmitting unit comprises:

the first sending subunit is used for sending a switching request message to the target main node, wherein the switching request message carries the indication information;

Or alternatively

And the second sending subunit is used for sending a first inter-node message to the target main node, wherein the first inter-node message carries the indication information.

As an alternative embodiment, the maximum number of candidate cells allowed to be configured by the target master node includes at least one of:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

As an alternative embodiment, the maximum number of candidate cells allowed to be configured by the target master node indicated by the source master node is smaller than or equal to the maximum number of candidate cells configured by the terminal to support conditional handover with candidate PSCell.

As an alternative embodiment, the apparatus further comprises:

and the first determining unit is used for determining the maximum number of candidate cells with candidate PSCells, which are configured by the terminal in a supporting manner, according to the terminal capability or the predefining reported by the terminal.

As an alternative embodiment, the apparatus further comprises:

and the second determining unit is used for determining the maximum number of candidate cells allowed to be configured by each target master node according to the acquired measurement result information for the neighbor cells and the maximum number of candidate cells with candidate PSCells configured by the terminal support.

In the embodiment of the invention, the source master node indicates the maximum number of the candidate cells allowed to be configured by the target master node to the target master node, and the target master node determines the maximum number of the candidate cells capable of being configured based on the maximum number when selecting the target candidate PScell thereof, so that the maximum number of the candidate cells capable of being configured can be ensured to meet the limit of the terminal capability, and resource waste and even configuration failure are avoided.

It should be noted that, the above device provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

As shown in fig. 6, the embodiment of the present invention further provides a target master node, including a memory 620, a transceiver 610, and a processor 600:

A memory 620 for storing a computer program; a transceiver 610 for transceiving data under the control of the processor 600; a processor 600 for reading the computer program in the memory 620 and performing the following operations:

And receiving indication information sent by a source master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

As an alternative embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

Determining the maximum number of candidate primary cell PCells allowed to be configured by the target primary node according to the maximum number indicated by the indication information;

Or alternatively

Determining a maximum number of candidate PCells allowed to be configured by a target master node and candidate PScells associated with the candidate PCells according to the maximum number indicated by the indication information;

Or alternatively

And determining the maximum number of candidate PScells allowed to be configured by the target auxiliary node corresponding to the target main node according to the maximum number indicated by the indication information.

As an alternative embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

Receiving a switching request message sent by a source main node, wherein the switching request message carries the indication information;

Or alternatively

And receiving a first inter-node message sent by the source main node, wherein the first inter-node message carries the indication information.

As an alternative embodiment, the maximum number of candidate cells allowed to be configured by the target master node includes at least one of:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

As an alternative embodiment, the maximum number of candidate cells allowed to be configured by the target master node indicated by the source master node is smaller than or equal to the maximum number of candidate cells configured by the terminal to support conditional handover with candidate PSCell.

As an alternative embodiment, the processor is further configured to read the computer program in the memory and perform the following operations:

And if the number of the configured candidate cells of the target main node is larger than the maximum number indicated by the indication information, deleting the configured candidate cells by the target main node until the number of the configured candidate cells is smaller than or equal to the maximum number indicated by the indication information.

Wherein in fig. 6, a bus architecture may comprise any number of interconnected buses and bridges, and in particular one or more processors represented by processor 600 and various circuits of memory represented by memory 620, linked together. The bus architecture may also link together various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are well known in the art and, therefore, will not be described further herein. The bus interface provides an interface. The transceiver 610 may be a number of elements, including a transmitter and a receiver, providing a means for communicating with various other apparatus over transmission media, including wireless channels, wired channels, optical cables, and the like. The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.

The processor 600 may be a Central Processing Unit (CPU), application SPECIFIC INTEGRATED Circuit (ASIC), field-Programmable gate array (Field-Programmable GATE ARRAY, FPGA), or complex Programmable logic device (Complex Programmable Logic Device, CPLD), or may employ a multi-core architecture.

In the embodiment of the invention, the source master node indicates the maximum number of the candidate cells allowed to be configured by the target master node to the target master node, and the target master node determines the maximum number of the candidate cells capable of being configured based on the maximum number when selecting the target candidate PScell thereof, so that the maximum number of the candidate cells capable of being configured can be ensured to meet the limit of the terminal capability, and resource waste and even configuration failure are avoided.

It should be noted that, the target master node provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and specific details of the same parts and beneficial effects as those of the method embodiment in the embodiment are not described herein.

As shown in fig. 7, the embodiment of the present invention further provides a processing apparatus for conditional switching, which is applied to a target master node, and includes:

and a receiving unit 701, configured to receive indication information sent by a source master node, where the indication information is used to indicate a maximum number of candidate cells allowed to be configured by the target master node.

As an alternative embodiment, the apparatus further comprises:

A third determining unit, configured to determine, according to the maximum number indicated by the indication information, the maximum number of candidate primary cells PCell allowed to be configured by the target primary node;

or determining a maximum number of candidate PCell allowed to be configured by a target master node and candidate pscells associated with the candidate PCell according to the maximum number indicated by the indication information;

Or determining the maximum number of candidate PSCells allowed to be configured by the target auxiliary node corresponding to the target main node according to the maximum number indicated by the indication information.

As an alternative embodiment, the receiving unit comprises:

The first receiving subunit is used for receiving a switching request message sent by a source main node, wherein the switching request message carries the indication information;

Or alternatively

And the second receiving subunit is used for receiving the first inter-node message sent by the source main node, and the first inter-node message carries the indication information.

As an alternative embodiment, the maximum number of candidate cells allowed to be configured by the target master node includes at least one of:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

As an alternative embodiment, the maximum number of candidate cells allowed to be configured by the target master node indicated by the source master node is smaller than or equal to the maximum number of candidate cells configured by the terminal to support conditional handover with candidate PSCell.

As an alternative embodiment, the apparatus further comprises:

and the deleting unit is used for deleting the configured candidate cells if the number of the configured candidate cells of the target main node is larger than the maximum number indicated by the indication information until the number of the configured candidate cells is smaller than or equal to the maximum number indicated by the indication information.

In the embodiment of the invention, the source master node indicates the maximum number of the candidate cells allowed to be configured by the target master node to the target master node, and the target master node determines the maximum number of the candidate cells capable of being configured based on the maximum number when selecting the target candidate PScell thereof, so that the maximum number of the candidate cells capable of being configured can be ensured to meet the limit of the terminal capability, and resource waste and even configuration failure are avoided.

It should be noted that, the above device provided in the embodiment of the present invention can implement all the method steps implemented in the method embodiment and achieve the same technical effects, and detailed descriptions of the same parts and beneficial effects as those in the method embodiment in this embodiment are omitted.

It should be further noted that, in the embodiment of the present application, the division of the units is schematic, which is merely a logic function division, and other division manners may be implemented in practical implementation. In addition, each functional unit in the embodiments of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in software functional units.

The integrated units, if implemented in the form of software functional units and sold or used as stand-alone products, may be stored in a processor-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied in essence or a part contributing to the prior art or all or part of the technical solution in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

Embodiments of the present invention also provide a processor-readable storage medium storing a computer program for causing a processor to perform the steps in the method embodiments described above, which may be any available medium or data storage device that can be accessed by a processor, including but not limited to magnetic memories (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MOs), etc.), optical memories (e.g., CD, DVD, BD, HVD, etc.), and semiconductor memories (e.g., ROM, EPROM, EEPROM, nonvolatile memories (NAND FLASH), solid State Disks (SSDs)), etc.

It will be appreciated by those skilled in the art that embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, magnetic disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flowchart illustrations and/or block diagrams, and combinations of flows and/or blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-executable instructions. These computer-executable instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be stored in a processor-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the processor-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These processor-executable instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various modifications and variations can be made to the present application without departing from the spirit or scope of the application. Thus, it is intended that the present application also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.

Claims (27)

1. A method of processing a conditional handoff performed by a source master node, the method comprising:

and sending indication information to a target master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

2. The method of claim 1, wherein transmitting the indication information to the target master node comprises:

Sending a switching request message to a target main node, wherein the switching request message carries the indication information;

Or alternatively

And sending a first inter-node message to the target main node, wherein the first inter-node message carries the indication information.

3. The method of claim 1, wherein the maximum number of candidate cells allowed to be configured by the target master node comprises at least one of:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

4. The method of claim 1, wherein the maximum number of candidate cells allowed to be configured by the target master node indicated by the source master node is less than or equal to the maximum number of candidate cells configured to be supported by the terminal with conditional handover of candidate pscells.

5. The method according to claim 4, wherein the method further comprises:

And determining the maximum number of candidate cells with candidate PSCells for terminal support configuration according to the terminal capability reported by the terminal or the predetennination.

6. The method according to claim 4, wherein the method further comprises:

and determining the maximum number of candidate cells allowed to be configured by each target master node according to the acquired measurement result information for the neighbor cells and the maximum number of candidate cells with candidate PScell conditional switching supported by the terminal.

7. A method of processing a conditional handoff performed by a target master node, the method comprising:

And receiving indication information sent by a source master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

8. The method of claim 7, wherein the method further comprises:

Determining the maximum number of candidate primary cell PCells allowed to be configured by the target primary node according to the maximum number indicated by the indication information;

Or alternatively

Determining a maximum number of candidate PCells allowed to be configured by a target master node and candidate PScells associated with the candidate PCells according to the maximum number indicated by the indication information;

Or alternatively

And determining the maximum number of candidate PScells allowed to be configured by the target auxiliary node corresponding to the target main node according to the maximum number indicated by the indication information.

9. The method of claim 7, wherein receiving the indication information sent by the source master node comprises:

Receiving a switching request message sent by a source main node, wherein the switching request message carries the indication information;

Or alternatively

And receiving a first inter-node message sent by the source main node, wherein the first inter-node message carries the indication information.

10. The method of claim 7, wherein the maximum number of candidate cells allowed to be configured by the target master node comprises at least one of:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

11. The method of claim 7, wherein the maximum number of candidate cells allowed to be configured by the target master node indicated by the source master node is less than or equal to the maximum number of candidate cells configured to be supported by the terminal with conditional handover of candidate pscells.

12. The method of claim 7, wherein the method further comprises:

And if the number of the configured candidate cells of the target main node is larger than the maximum number indicated by the indication information, deleting the configured candidate cells by the target main node until the number of the configured candidate cells is smaller than or equal to the maximum number indicated by the indication information.

13. A source master node comprising a memory, a transceiver, and a processor:

A memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

and sending indication information to a target master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

14. The source master node of claim 13, wherein the processor is further configured to read a computer program in the memory and perform the following:

Sending a switching request message to a target main node, wherein the switching request message carries the indication information;

Or alternatively

And sending a first inter-node message to the target main node, wherein the first inter-node message carries the indication information.

15. The source master node of claim 13, wherein the maximum number of candidate cells that the target master node is permitted to configure comprises at least one of:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

16. The source master node of claim 13, wherein the target master node indicated by the source master node allows a maximum number of configured candidate cells to be less than or equal to a maximum number of candidate cells with candidate PSCell conditional handovers configured for terminal support.

17. The source master node of claim 16, wherein the processor is further configured to read a computer program in the memory and perform the following:

And determining the maximum number of candidate cells with candidate PSCells for terminal support configuration according to the terminal capability reported by the terminal or the predetennination.

18. The source master node of claim 16, wherein the processor is further configured to read a computer program in the memory and perform the following:

and determining the maximum number of candidate cells allowed to be configured by each target master node according to the acquired measurement result information for the neighbor cells and the maximum number of candidate cells with candidate PScell conditional switching supported by the terminal.

19. A processing apparatus for conditional switching, applied to a source master node, comprising:

And the sending unit is used for sending indication information to the target master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

20. A target master node comprising a memory, a transceiver, and a processor:

A memory for storing a computer program; a transceiver for transceiving data under control of the processor; a processor for reading the computer program in the memory and performing the following operations:

And receiving indication information sent by a source master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

21. The target master node of claim 20, wherein the processor is further configured to read a computer program in the memory and perform the following:

Determining the maximum number of candidate primary cell PCells allowed to be configured by the target primary node according to the maximum number indicated by the indication information;

Or alternatively

Determining a maximum number of candidate PCells allowed to be configured by a target master node and candidate PScells associated with the candidate PCells according to the maximum number indicated by the indication information;

Or alternatively

And determining the maximum number of candidate PScells allowed to be configured by the target auxiliary node corresponding to the target main node according to the maximum number indicated by the indication information.

22. The target master node of claim 20, wherein the processor is further configured to read a computer program in the memory and perform the following:

Receiving a switching request message sent by a source main node, wherein the switching request message carries the indication information;

Or alternatively

And receiving a first inter-node message sent by the source main node, wherein the first inter-node message carries the indication information.

23. The target master node of claim 20, wherein the maximum number of candidate cells that the target master node is permitted to configure comprises at least one of:

the maximum number of candidate primary cell PCell allowed to be configured by the target primary node;

Or alternatively

The target master node allows the configured candidate PCell and the maximum number of candidate pscells associated with the candidate PCell;

Or alternatively

The target secondary node corresponding to the target primary node allows the maximum number of configured candidate pscells.

24. The target primary node of claim 20, wherein the target primary node indicated by the source primary node allows a maximum number of configured candidate cells to be less than or equal to a maximum number of candidate cells with candidate PSCell conditional handovers configured for terminal support.

25. The target master node of claim 20, wherein the processor is further configured to read a computer program in the memory and perform the following:

And if the number of the configured candidate cells of the target main node is larger than the maximum number indicated by the indication information, deleting the configured candidate cells by the target main node until the number of the configured candidate cells is smaller than or equal to the maximum number indicated by the indication information.

26. A processing apparatus for conditional switching, applied to a target master node, comprising:

And the receiving unit is used for receiving the indication information sent by the source master node, wherein the indication information is used for indicating the maximum number of candidate cells allowed to be configured by the target master node.

27. A processor-readable storage medium, characterized in that the processor-readable storage medium stores a computer program for causing the processor to perform the method of any one of claims 1 to 6 or for causing the processor to perform the method of any one of claims 7 to 12.