WO2023071754A1 - Information transmission method and apparatus, and device and storage medium - Google Patents

Abstract

The present disclosure relates to the technical field of communications. Provided are an information transmission method and apparatus, and a device and a storage medium. The method comprises: sending secondary node change acknowledgement signaling to a source secondary node, wherein the secondary node change acknowledgement signaling comprises a first preset cell, which is used for indicating related information of primary and secondary cells, which accept a conditional PSCell change (CPC) request initiated by the source secondary node for a target terminal. By means of the method, a source secondary node can learn related information of primary and secondary cells, which accept a CPC request for a target terminal, such that the source secondary node can determine the next CPC-related procedure according to the related information of the primary and secondary cells, thereby preventing the number of candidate primary and secondary cells of the target terminal from exceeding the maximum number of primary and secondary cells that can be supported.

Description

Information transmission method, device, equipment and storage medium

This disclosure is based on the Chinese patent application with the application number 202111280507.3, the filing date is October 29, 2021, and the invention title is "Information Transmission Method, Device, Equipment, and Storage Medium", and claims the priority of the Chinese patent application. The entire content of the Chinese patent application is hereby incorporated by reference into this disclosure.

technical field

The present disclosure relates to the technical field of communications, and in particular, to an information transmission method, device, equipment, and readable storage medium.

Background technique

With the actual deployment of 5th Generation Mobile Communication Technology (5G for short), NSA (Non-Standalone, refers to the coexistence of 4G base stations and 5G base stations on the wireless side, and the core network adopts the combination of 4G core network or 5G core network. network architecture) architecture, 4G and 5G networks will coexist for a long time in the future, a variety of wireless access technologies - dual connectivity (Multi-RAT (Radio Access Technology) Dual Connectivity, MR-DC, referred to as multi-connection) The application of technology will effectively improve network coverage and system capacity, while ensuring user service quality and improving network spectrum utilization.

An important research point in MR-DC enhancement technology is to support the Conditional PSCell Change (CPC) process, which can be triggered by the master node (Master Node, MN) node, or by the source (Source) secondary node (Secondary Node, SN) node trigger. Relevant standards have clearly defined the need to limit the number of candidate primary and secondary cells of a terminal (also called user equipment, User Equipment, UE) in the CPC process. After the source SN initiates the CPC request, the source SN needs to know the situation of the candidate primary and secondary cells that accept the CPC request.

The above information disclosed in this Background section is only for enhancement of understanding of the background of the disclosure and therefore it may contain information that does not form the prior art that is already known in the art to a person of ordinary skill in the art.

Contents of the invention

Other features and advantages of the present disclosure will become apparent from the following detailed description, or in part, be learned by practice of the present disclosure.

According to an aspect of the present disclosure, there is provided an information transmission method applied to a primary node, including: sending secondary node change acknowledgment signaling to a source secondary node, where the secondary node change confirmation signaling includes a first preset information element, the The first preset information element is used to indicate the relevant information of the primary secondary cell that accepts the conditional primary secondary cell change CPC request for the target terminal initiated by the source secondary node.

According to an embodiment of the present disclosure, the first preset information element includes an identification information element of a candidate primary-secondary cell or an identification information element of a prepared primary-secondary cell.

According to an embodiment of the present disclosure, the method further includes: receiving secondary node change requirement signaling sent by the source secondary node when the CPC request for the target terminal is initiated, the secondary node change requirement signaling The order includes a second preset information element, and the second preset information element is used to indicate the identity of the candidate target secondary node; according to the identity of the candidate target secondary node, send a secondary node addition request signaling to the corresponding candidate target secondary node The secondary node addition request signaling includes indication information for adding or changing the CPAC mechanism of the conditional primary secondary cell; receiving the secondary node addition request confirmation signaling sent by the candidate target secondary node, the secondary node addition request confirmation signaling Including information about the primary secondary cell that the candidate target secondary node accepts the CPC request; sending radio resource control RRC connection reconfiguration information to the target terminal, the RRC connection reconfiguration information including the indication of using the CPAC mechanism Information and the identity and/or related information of the candidate target secondary node; receiving the RRC connection reconfiguration completion information sent by the target terminal.

According to an embodiment of the present disclosure, the secondary node change acknowledgment signaling further includes a target secondary node identification information element, and the target secondary node identification information element is used to indicate that the target terminal initiated by the source secondary node has been accepted. The identifier of the target secondary node of the CPC request.

According to an embodiment of the present disclosure, the secondary node change acknowledgment signaling further includes RRC related information, and the RRC related information is obtained by encapsulating the RRC connection reconfiguration completion information sent by the target terminal.

According to still another aspect of the present disclosure, there is provided an information transmission method applied to a secondary node, including: receiving secondary node change confirmation signaling sent by the primary node, the secondary node change confirmation signaling including a first preset information element, The first preset information element is used to indicate relevant information of the primary secondary cell that accepts the CPC request for the target terminal initiated by the secondary node.

According to an embodiment of the present disclosure, the first preset information element includes an identification information element of a candidate primary-secondary cell or an identification information element of a prepared primary-secondary cell.

According to an embodiment of the present disclosure, the method further includes: obtaining the number of primary secondary cells that accept the CPC request initiated by the secondary node for the target terminal according to the first preset information element; When the number of primary secondary cells in the CPC request for the target terminal initiated by the secondary node is less than the preset maximum number of supported candidate primary secondary cells, it is decided to initiate a CPC request for the target terminal to the candidate target secondary node.

According to an embodiment of the present disclosure, the method further includes: when the number of primary-secondary cells that accept the CPC request for the target terminal initiated by the secondary node is equal to the preset maximum number of supported candidate primary-secondary cells Next, it is decided not to initiate a CPC request for the target terminal.

According to an embodiment of the present disclosure, the method further includes: when the number of primary-secondary cells that accept the CPC request for the target terminal initiated by the secondary node is greater than the preset maximum number of supported candidate primary-secondary cells Next, it is decided to initiate a CPC cancellation process for the target terminal to the candidate target secondary node.

According to an embodiment of the present disclosure, the method further includes: initiating the CPC request for the target terminal; sending secondary node change requirement signaling to the primary node, where the secondary node change requirement signaling includes the second A preset information element, where the second preset information element is used to indicate the identity of the candidate target secondary node.

According to another aspect of the present disclosure, an information transmission device is provided, which is applied to a primary node, including: a secondary node change confirmation signaling sending module, configured to send a secondary node change confirmation signaling to a source secondary node, and the secondary node changes The acknowledgment signaling includes a first preset information element, and the first preset information element is used to indicate information about the PSC that accepts the conditional PSC request for the target terminal initiated by the source secondary node.

According to an embodiment of the present disclosure, the first preset information element includes an identification information element of a candidate primary-secondary cell or an identification information element of a prepared primary-secondary cell.

According to an embodiment of the present disclosure, the device further includes: a secondary node change request signaling receiving module, configured to receive the secondary node change sent by the source secondary node when the CPC request for the target terminal is initiated Requirement signaling, the secondary node change requirement signaling includes a second preset information element, the second preset information element is used to indicate the identity of the candidate target secondary node; the secondary node addition request signaling sending module is configured to The identifier of the candidate target secondary node sends secondary node addition request signaling to the corresponding candidate target secondary node, and the secondary node addition request signaling includes indication information using a conditional primary secondary cell to add or change the CPAC mechanism; the secondary node addition request A confirmation signaling receiving module, configured to receive secondary node addition request confirmation signaling sent by the candidate target secondary node, where the secondary node addition request confirmation signaling includes the primary secondary cell for which the candidate target secondary node accepts the CPC request related information; an RRC connection reconfiguration information sending module, configured to send radio resource control RRC connection reconfiguration information to the target terminal, where the RRC connection reconfiguration information includes the indication information using the CPAC mechanism and the candidate target The identity and/or related information of the secondary node; the RRC connection reconfiguration completion information receiving module, configured to receive the RRC connection reconfiguration completion information sent by the target terminal.

According to an embodiment of the present disclosure, the secondary node change acknowledgment signaling further includes a target secondary node identification information element, and the target secondary node identification information element is used to indicate that the target terminal initiated by the source secondary node has been accepted. The identifier of the target secondary node of the CPC request.

According to an embodiment of the present disclosure, the secondary node change acknowledgment signaling further includes RRC related information, and the RRC related information is obtained by encapsulating the RRC connection reconfiguration completion information sent by the target terminal.

According to another aspect of the present disclosure, an information transmission device is provided, which is applied to a secondary node, including: a secondary node change confirmation signaling receiving module, configured to receive the secondary node change confirmation signaling sent by the primary node, the secondary node change The confirmation signaling includes a first preset information element, and the first preset information element is used to indicate relevant information of the primary secondary cell that accepts the CPC request for the target terminal initiated by the secondary node.

According to an embodiment of the present disclosure, the first preset information element includes an identification information element of a candidate primary-secondary cell or an identification information element of a prepared primary-secondary cell.

According to an embodiment of the present disclosure, the device further includes: a module for obtaining the number of candidate primary and secondary cells, configured to obtain, according to the first preset information element, the number of accepting the CPC request for the target terminal initiated by the secondary node The number of primary and secondary cells; the module for limiting the number of candidate primary and secondary cells, configured to accept the number of primary and secondary cells for the CPC request for the target terminal initiated by the secondary node is less than the preset maximum number of supported candidate primary and secondary cells Next, it is decided to initiate a CPC request for the target terminal to the candidate target secondary node.

According to an embodiment of the present disclosure, the module for limiting the number of candidate primary and secondary cells is further configured to accept a CPC request initiated by the secondary node for the target terminal when the number of primary and secondary cells equal to the preset maximum supported In the case of the number of candidate primary and secondary cells, it is decided not to initiate a CPC request for the target terminal.

According to an embodiment of the present disclosure, the module for limiting the number of candidate primary and secondary cells is further configured to accept a CPC request initiated by the secondary node for the target terminal and the number of primary and secondary cells is greater than the preset maximum supported In the case of the number of candidate primary and secondary cells, it is decided to initiate a CPC cancellation process for the target terminal to the candidate target secondary node.

According to an embodiment of the present disclosure, the device further includes: a CPC request initiation module, configured to initiate the CPC request for the target terminal; a secondary node change request signaling sending module, configured to send Secondary node change requirement signaling, where the secondary node change requirement signaling includes a second preset information element, where the second preset information element is used to indicate an identity of a candidate target secondary node.

According to still another aspect of the present disclosure, there is provided a device, including: a memory, a processor, and executable instructions stored in the memory and executable in the processor, and the processor executes the executable instructions When implementing any of the above methods.

According to still another aspect of the present disclosure, there is provided a computer-readable storage medium, on which computer-executable instructions are stored, and when the executable instructions are executed by a processor, any one of the above-mentioned methods is implemented.

It is to be understood that both the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present disclosure.

Description of drawings

The above and other objects, features and advantages of the present disclosure will become more apparent by describing in detail example embodiments thereof with reference to the accompanying drawings.

Fig. 1 shows a flowchart of an information transmission method in an embodiment of the present disclosure.

Fig. 2 is a schematic diagram of an information transmission method in an SN-triggered CPC process according to an exemplary embodiment.

Fig. 3 shows a flowchart of another information transmission method in an embodiment of the present disclosure.

Fig. 4 is a schematic flow diagram of a source secondary node making a decision according to information of candidate primary and secondary cells shown in Fig. 3 .

FIG. 5 is a schematic diagram of information interaction in an SN-triggered CPC process shown in FIG. 1 to FIG. 4 .

Fig. 6 shows a block diagram of an information transmission device in an embodiment of the present disclosure.

Fig. 7 shows a block diagram of another information transmission device in an embodiment of the present disclosure.

Fig. 8 shows a block diagram of another information transmission device in an embodiment of the present disclosure.

Fig. 9 shows a block diagram of another information transmission device in an embodiment of the present disclosure.

Fig. 10 shows a schematic structural diagram of an electronic device in an embodiment of the present disclosure.

Detailed ways

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted.

Furthermore, the described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided in order to give a thorough understanding of embodiments of the present disclosure. However, those skilled in the art will appreciate that the technical solutions of the present disclosure may be practiced without one or more of the specific details being omitted, or other methods, devices, steps, etc. may be adopted. In other instances, well-known structures, methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring aspects of the present disclosure.

In addition, the terms "first", "second", etc. are used for descriptive purposes only, and should not be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, a feature defined as "first" and "second" may explicitly or implicitly include one or more of these features. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined. The symbol "/" generally indicates that the contextual objects are an "or" relationship.

In this disclosure, unless otherwise specified and limited, terms such as "connection" should be understood in a broad sense, for example, it can be electrically connected or can communicate with each other; it can be directly connected or indirectly connected through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present disclosure according to specific situations.

As mentioned above, an important research point in the MR-DC enhancement technology is to support the CPC process. The purpose of the CPC process is to improve the success rate of primary and secondary cell changes. The core idea is that the network uses Radio Resource Control (RRC) signals to Configure the UE to perform the CPC process. According to the received signal quality of the surrounding candidate SN cells, when the cell of a candidate SN meets the configured threshold, the UE will initiate the synchronization process with the SN, and no longer need to report the measurement report to the network, thus effectively Improve the success rate of adding or changing the primary and secondary cells. For the same UE, relevant standards limit the number of cells that can support candidate SNs. For example, the third-generation mobile communication technology specification organization 3GPP protocol limits the maximum number of candidate PScells that can be supported to 8 (Maximum Number of PSCells To Prepare = 8).

When the CPC process triggered by SN occurs in the network, that is, the conditional inter SN PScell Change (Conditional inter SN PScell Change) process triggered by the source SN (the change between the primary and secondary cells refers to the change of the primary and secondary cells from the cell of one SN to another The cell of the SN, this disclosure takes this situation as an example for illustration, and the conditional primary and secondary cell change (Conditional PScell Change, CPC) process in the following is this situation unless otherwise specified), how to obtain the request for the source SN Candidate cell information is not yet clear, that is, under the current protocol, the source SN does not know how many candidate cells have accepted the CPC request, which will cause the source SN to be unable to accurately determine whether a new CPC request can be triggered, and whether the current CPC configuration parameters are reasonable . The source SN needs to plan the CPC request to avoid the number of candidate cells exceeding the limit, so the source SN needs to know the number of candidate cells that accept the request corresponding to each CPC request for the same UE, and decide whether to target the current UE based on the current number of candidate cells Trigger the next CPC request. How to enable the source SN to know the situation of the candidate primary and secondary cells that accept the CPC request when the source SN initiates the CPC process becomes an urgent problem to be solved.

Therefore, the present disclosure provides an information transmission method. The primary node sends secondary node change acknowledgment signaling including a first preset information element to the source secondary node. The first preset information element is used to indicate acceptance of the source secondary node initiated The relevant information of the primary and secondary cells of the CPC request for the target terminal, so that the source secondary node can learn the relevant information of the primary secondary cell that accepts the CPC request for the target terminal, and can be used as the source secondary node when the source secondary node initiates the CPC process. The node provides the information of the candidate primary and secondary cells that accept the CPC request, so that the source secondary node can obtain related information such as the number of primary and secondary cells that accept the request, and decide the next CPC related process accordingly, which can avoid the candidate primary and secondary cells of the target terminal. The number of secondary cells exceeds the supported maximum.

Fig. 1 is a flowchart showing an information transmission method according to an exemplary embodiment. The method shown in FIG. 1 can be applied to a master node in a dual connectivity network, for example, it can be a master node in a 5G converged multi-connection (MR-DC) architecture network.

Referring to FIG. 1 , a method 10 provided by an embodiment of the present disclosure may include the following steps.

In step S102, send secondary node change acknowledgment signaling to the source secondary node, the secondary node change confirmation signaling includes a first preset information element, and the first preset information element is used to indicate acceptance of the target terminal initiated by the source secondary node Conditional Primary and Secondary Cells change the relevant information of the Primary and Secondary Cells requested by the CPC.

In some embodiments, in the CPC process initiated by the source secondary node, the source secondary node first sends the secondary node change required (SgNB/SN Change Required) signaling to the master node, from which the master node can obtain the identity of the candidate target SN, initiate The identification and/or other information of the source SN requested by the CPC (such as the number of cells in the source SN, identification, etc.), and then the master node sends a secondary node addition request to the corresponding candidate target SN according to the identification of the candidate target SN (SgNB/SN Addition Request) signaling, and after obtaining the secondary node addition request confirmation (SgNB/SN Addition Request Acknowledge) signaling of the corresponding candidate target SN, feed back the secondary node change confirmation (SgNB/SN Change Confirmation) to the source SN that initiated the CPC request ) signaling. Refer to FIG. 2 and FIG. 5 for specific implementation manners in the CPC process initiated by the source secondary node.

In some embodiments, the first preset information element may include information indicating the identity of the primary and secondary cell that accepts the CPC request, for example, the first preset information element may include an identification information element of a candidate primary and secondary cell or a prepared Identification information element of primary and secondary cells. The identification information element of the candidate PSCell can be, for example, Candidate PSCell ID (identification) List IE (Informaton Element, information element), or Candidate PSCell ID Item IE, or List of Candidate PSCell ID IE, or Item of Candidate PSCell ID IE, etc. Etc., the identification information element of the prepared primary and secondary cells can be, for example, Prepared PSCell ID List IE, or Prepared PSCell ID Item IE, or List of Prepared PSCell ID IE, or Item of Prepared PSCell ID IE, etc. The identification information element of the candidate primary and secondary cells or the identification information element of the prepared primary and secondary cells is used to indicate the identity of the primary and secondary cells that have accepted the CPC request initiated by the source SN for the target terminal, and the accepted source SN can be obtained through this information element The number of primary and secondary cells for the CPC request of the target terminal initiated by the SN.

In some embodiments, the secondary node change confirmation signaling may further include a target secondary node identification information element, which is used to indicate the identification of the target secondary node that has accepted the CPC request for the target terminal initiated by the source secondary node . A target secondary node may include one or more primary secondary cells that accept the CPC request.

In some embodiments, the secondary node change acknowledgment signaling may further include RRC related information, and the RRC related information is obtained by encapsulating the RRC connection reconfiguration completion information sent by the target terminal. The RRC connection reconfiguration completion information sent by the target terminal may include the information of the candidate target SN and/or the information of the candidate primary and secondary cells confirmed by the target UE (and correspondingly configured), so the RRC related information may include the confirmation of the target UE ( and perform corresponding configuration) information of candidate target SNs and/or information of candidate primary and secondary cells. The master node can summarize the information of the primary and secondary cells of each candidate target SN that accepts the CPC request for the target UE obtained from the secondary node addition request confirmation signaling received from the candidate target SN and the RRC-related information to obtain the target UE (actual configuration) information about the number of candidate primary and secondary cells. In this case, the first preset information element may also indicate the number of primary and secondary cells that accept the CPC request.

According to the information transmission method provided by the embodiments of the present disclosure, the primary node sends secondary node change confirmation signaling including a first preset information element to the source secondary node, and the first preset information element is used to indicate acceptance of the request initiated by the source secondary node. For the relevant information of the primary secondary cell requested by the CPC of the target terminal, the source secondary node can obtain the relevant information of the primary secondary cell that accepts the CPC request for the target terminal, so that the source secondary node can obtain the primary secondary cell that accepts the request and determine the next CPC-related procedure accordingly, so as to prevent the number of candidate primary and secondary cells of the target terminal from exceeding the maximum supported value.

Fig. 2 is a schematic diagram of an information transmission method in an SN-initiated CPC process according to an exemplary embodiment. The method shown in FIG. 2 can be applied to a master node in a dual-connection network, for example, it can be a master node in a 5G converged multi-connectivity (MR-DC) architecture network.

Referring to FIG. 2 , a method 20 provided by an embodiment of the present disclosure may include the following steps.

In step S202, the secondary node change requirement signaling sent by the source secondary node when initiating a CPC request for the target terminal is received, the secondary node change requirement signaling includes a second preset information element, and the second preset information element is used to Indicates the identity of the candidate target secondary node.

In some embodiments, in most cases, the CPC process is triggered by the source secondary node according to its own resource conditions, and the source secondary node can send secondary node change required (SgNB/SN Change Required) signaling to the primary node, indicating that the primary secondary cell changes demand. The source secondary node can obtain the identity of the candidate target SN based on the measurement report (Measurement control/report) reported by the (target) UE. When SRB (Signaling Radio Bearer, wireless signaling bearer) 3 is set between the source secondary node and the UE, the UE can report a measurement report to the source SN through SRB3, and the source SN screens candidate target SNs that meet the conditions based on the measurement report; When SRB33 is not set between the secondary node and the UE, the UE reports a measurement report to the master node (MN), and the MN forwards it to the source SN, and the source SN screens candidate target SNs that meet the conditions based on the measurement report.

In step S204, according to the identity of the candidate target secondary node, the secondary node addition request signaling is sent to the corresponding candidate target secondary node, and the secondary node addition request signaling includes the conditional PSCell Addition/Change (CPAC ) mechanism instructions.

In some embodiments, the number of candidate target secondary nodes may be one or more, and the master node may send secondary node addition request (SgNB/SN Addition Request) signaling to each candidate target secondary node, which may carry CPAC indicator (Indicator) information element, indicating that the current is a CPC request. For a specific implementation manner of multiple candidate target secondary nodes, reference may be made to FIG. 3 .

In step S206, the secondary node addition request confirmation signaling sent by the candidate target secondary node is received, and the secondary node addition request confirmation signaling includes relevant information of the primary secondary cell for which the candidate target secondary node accepts the CPC request.

In some embodiments, the candidate target SN can perform access control according to its own resource conditions, for example, it can comprehensively consider whether to accept the current CPC request according to the physical resource block (Physical Resource Block, PRB utilization rate), the number of RRC connections, etc. After the candidate target SN decides to receive the current CPC request, it can feed back the secondary node to add request confirmation signaling to the master node, and the signaling can include an information element indicating that the current candidate target SN accepts the CPC request related information of the primary and secondary cells. For example, the name of the information element may be the same as the name of the identification information element of the candidate primary-secondary cell in the first preset information element or the name of the identification information element of the prepared primary-secondary cell, but the same as the information element in the first preset information element have different meanings. Wherein, the name of the identification information element of the candidate primary and secondary cells can be, for example, Candidate PSCell ID (identification) List IE (Informaton Element, information element), or Candidate PSCell ID Item IE, or List of Candidate PSCell ID IE, or Item of Candidate PSCell ID IE, etc., the name of the identification information element of the prepared primary and secondary cells can be, for example, Prepared PSCell ID List IE, or Prepared PSCell ID Item IE, or List of Prepared PSCell ID IE, or Item of Prepared PSCell ID IE, etc. wait.

In step S208, RRC connection reconfiguration information is sent to the target terminal, and the RRC connection reconfiguration information includes indication information of adopting the CPAC mechanism and identification and/or related information of candidate target secondary nodes.

In some embodiments, the primary node informs the target terminal that the CP(A)C mechanism can be used to transmit data through the RRC connection reconfiguration information, and sends together the identity of the candidate target secondary node and/or the candidate primary secondary cell of the candidate target secondary node and/or network configuration information of candidate target secondary nodes, etc., so that the target terminal can perform access configuration.

In step S210, the RRC connection reconfiguration completion information sent by the target terminal is received.

In some embodiments, the RRC connection reconfiguration completion information sent by the target terminal to the master node may include information about candidate target SNs confirmed (and configured accordingly) by the target UE and/or information about candidate primary and secondary cells, for example, may include An identification list of candidate target SNs and/or an identification list of candidate primary and secondary cells, etc.

In step S212, send SNB change acknowledgment signaling to the source SNB, where the SNB change acknowledgment signaling includes a first preset information element, a target SNB identification information element, and RRC related information.

In some embodiments, the primary node may summarize and encapsulate information elements indicating that the current candidate target SN accepts the CPC request and obtain relevant information of the primary and secondary cells obtained from the secondary node addition request confirmation signaling received by each candidate target SN, Obtain the first preset information element; then encapsulate the second preset information element in the secondary node change demand signaling received from the source secondary node, and obtain the target secondary node identification information element; then receive the RRC connection from the target terminal Encapsulate the reconfiguration completion information to obtain RRC related information; then send the first preset information element, target secondary node identification information element and RRC related information to the source secondary node through the secondary node change confirmation signaling, so that the source secondary node can integrate The information obtains the number of primary and secondary cells that accept the CPC request in the RRC configuration completed by the target UE.

According to the information transmission method provided by the embodiments of the present disclosure, a new sub-information element is added to the existing Xn/X2 signaling (secondary node change confirmation signaling) to indicate the identity of the primary and secondary cells, which can be well compatible with the existing protocol process , to avoid excessive signaling overhead, and at the same time, it can accurately indicate the number of candidate base stations of the source node, and assist the source SN to decide whether to trigger a new CPC request for the current UE.

Fig. 3 is a flowchart showing another information transmission method according to an exemplary embodiment. The method shown in FIG. 3 may be applied to, for example, a secondary node in a dual connectivity network, for example, may be a source secondary node that initiates a CPC process.

Referring to FIG. 3 , a method 30 provided by an embodiment of the present disclosure may include the following steps.

In step S302, the secondary node change confirmation signaling sent by the primary node is received, the secondary node change confirmation signaling includes a first preset information element, and the first preset information element is used to indicate acceptance of the CPC initiated by the secondary node for the target terminal Information about the requested primary and secondary cells.

In some embodiments, in the CPC process initiated by the source secondary node, the source secondary node first sends the SgNB/SN Change Required signaling to the master node, which may include information such as the identity of the candidate target SN, and then the master node sends the corresponding candidate target The SN sends the SgNB/SN Addition Request signaling, which indicates the current CPC request, and the candidate target SN decides whether to accept the CPC request according to its own resource conditions, and sends the SgNB/SN Addition Request to the master node after deciding to accept it. SN Addition Request Acknowledge signaling, so that the master node sends SgNB/SN Addition Request signaling according to the signaling. Specific embodiments can refer to FIG. 1 and FIG. 2 .

In some embodiments, the first preset information element may include an identification information element of a candidate primary-secondary cell or an identification information element of a prepared primary-secondary cell. For a specific implementation manner, reference may be made to step S102.

In some embodiments, the source SN can obtain the number of primary and secondary cells that accept the CPC request according to the identification of the primary secondary cell that accepts the CPC request for the target terminal indicated by the first preset information element, and then according to the Based on the relationship between the number of primary and secondary cells and the maximum supported candidate primary and secondary cells, it is decided to execute the next CPC process. The specific implementation manner can refer to FIG. 4 .

Fig. 4 is a schematic flow diagram of a source secondary node making a decision according to information of candidate primary and secondary cells shown in Fig. 3 . Referring to FIG. 4 , the method provided by the embodiment of the present disclosure may include the following steps.

In step S402, the number of primary secondary cells that accept the CPC request for the target terminal initiated by the secondary node is obtained according to the first preset information element.

In some embodiments, the first preset information element may indicate the identity information of the primary and secondary cells that accept the CPC request, and the source secondary node may use the number of different primary and secondary cell identities as The number of primary and secondary cells requested by the CPC.

In step S404, when the number of primary secondary cells that accept the CPC request for the target terminal initiated by the secondary node is less than the preset maximum number of supported candidate primary secondary cells, it is decided to initiate a CPC request for the target terminal to the candidate target secondary node .

In some embodiments, the preset maximum number of supported candidate primary and secondary cells can be obtained, such as 6, 8, or 10, etc. The number of candidate PScells is 8 (Maximum Number of PSCells To Prepare=8). When the number of candidate PScells currently accepted by the source SN is less than the preset maximum number of supported candidate primary and secondary cells, the source SN can send other candidate target SNs (except the target SN that has accepted the request) to other candidate target SNs that meet the conditions for the current target UE. Candidate target SN) triggers a new CPC request.

In step S406, when the number of PSCs that accept the CPC request for the target terminal initiated by the secondary node is equal to the preset maximum number of supported candidate PSCs, it is decided not to initiate the CPC request for the target terminal.

In some embodiments, when the number of currently requested candidate PScells obtained by the source SN is equal to the preset maximum number of supported candidate primary-secondary cells, the source SN no longer triggers a new CPC process for the current target UE.

In step S408, when the number of primary secondary cells that accept the CPC request for the target terminal initiated by the secondary node is greater than the preset maximum number of supported candidate primary secondary cells, it is decided to initiate a CPC cancellation for the target terminal to the candidate target secondary node process.

In some embodiments, when the number of candidate PScells currently receiving requests obtained by the source SN is greater than the preset maximum number of supported candidate primary and secondary cells, the source SN may trigger the CPC cancellation process, for example, cancel X CPCs based on the quality of the reference signal reception In the process, X can be obtained by subtracting the obtained current number of candidate primary and secondary cells from the preset maximum number of supported candidate primary and secondary cells.

According to the information transmission method provided by the embodiments of the present disclosure, combined with the current CPC process, a signaling process for indicating the number of candidate cells to the source SN is provided to help the source SN obtain the number of candidate cells that accept the CPC request, so that the source SN can proceed to the next step Decisions, such as triggering a new CPC request for the current UE, or canceling part of the CPC process, etc.

FIG. 5 is a schematic diagram of information interaction in an SN-triggered CPC process shown in FIG. 1 to FIG. 4 . As shown in Figure 5, after the source secondary node 5006 decides that the PScell Change adopts the CPC mechanism, it can send a secondary node change required (SN/SgNB Change Required) signaling to the primary node 5004, which contains CPAC-related information indicating that the current A CPC request may also carry candidate target node ID (Candidate target node ID) information element indicating candidate target SN; After receiving the above signaling, the master node 5004 sends SN/SgNB Addition Request signaling to all candidate target SNs, that is, candidate target secondary node 1 5008 and candidate target secondary node 2 5010 in Figure 5 according to the Candidate target node ID (S504, S506), the signaling also includes CPAC-related information (such as a CPAC Indicator information element) indicating that it is currently a CPC request.

Candidate target secondary node 1 5008 and candidate target secondary node 2 5010 perform access control according to their own resource conditions (S508, S510) to decide whether to accept the current CPC request, and feedback SN/SgNB Addition Request Acknowledge signaling to the primary node after accepting the CPC request Node 5004, the signaling includes the identification information of candidate primary and secondary cells that the candidate target secondary node accepts the current CPC request, for example, it may be a List of Prepared PSCell information element. As shown in Figure 5, the SN/SgNB Addition Request Acknowledge signaling (S512) sent by the candidate target secondary node 1 5008 to the primary node 5004 includes the identity of the candidate primary and secondary cell for which the candidate target secondary node 1 5008 accepts the current CPC request, and the candidate target The secondary node 2 5010 accepts the candidate primary secondary cell identity of the current CPC request to the candidate target secondary node 2 5010 included in the SN/SgNB Addition Request Acknowledge signaling (S514) sent by the primary node 5004.

After receiving the SN/SgNB Addition Request Acknowledge signaling fed back by the candidate target SN, the master node 5004 configures (S516) the target terminal 5002 through the RRC signaling to prepare for the CPC process. After the target terminal 5002 completes the RRC connection reconfiguration (S518), the primary node 5004 may feed back SgNB/SN Change Confirm signaling to the source secondary node 5006 (S516). The preset information element, the first preset information element can be obtained by summarizing the identification information of the candidate primary and secondary cells fed back by the candidate target secondary node 1 5008 and the candidate target secondary node 2 5010, and can also include the RRC of the target terminal 5002 RRC-related information obtained by encapsulating connection reconfiguration completion information. After receiving the SgNB/SN Change Confirm signaling, the source secondary node 5006 obtains the number of current candidate primary and secondary cells, and decides whether to trigger the next CPC process for the target terminal 5002.

Fig. 6 is a block diagram of an information transmission device according to an exemplary embodiment. The apparatus shown in FIG. 6 may be applied to a master node in a dual connectivity network, for example, may be a master node in a 5G converged multi-connectivity (MR-DC) architecture network.

Referring to FIG. 6 , the device 60 provided by this embodiment of the present disclosure may include a secondary node change confirmation signaling sending module 602, which may be configured to send a secondary node change confirmation signaling to the source secondary node, where the secondary node change confirmation signaling includes a first preset signal element, the first preset information element is used to indicate the relevant information of the primary secondary cell that accepts the conditional primary secondary cell change CPC request for the target terminal initiated by the source secondary node.

Fig. 7 is a block diagram of another information transmission device according to an exemplary embodiment. The apparatus shown in FIG. 7 may be applied to a master node in a dual connectivity network, for example, may be a master node in a 5G converged multi-connectivity (MR-DC) architecture network.

Referring to FIG. 7 , the apparatus 70 provided by this embodiment of the present disclosure may include a secondary node change request signaling receiving module 702, a secondary node addition request signaling sending module 704, a secondary node addition request confirmation signaling receiving module 706, and RRC connection reconfiguration information A sending module 708 , an RRC connection reconfiguration completion information receiving module 710 and a secondary node change confirmation signaling sending module 712 .

The secondary node change requirement signaling receiving module 702 may be configured to receive the secondary node change requirement signaling sent by the source secondary node when a CPC request for the target terminal is initiated, the secondary node change requirement signaling includes a second preset information element, the second The preset information element is used to indicate the identity of the candidate target secondary node.

The secondary node addition request signaling sending module 704 can be configured to send secondary node addition request signaling to the corresponding candidate target secondary node according to the identifier of the candidate target secondary node, and the secondary node addition request signaling includes using a conditional primary secondary cell to add or change the CPAC mechanism instructions for the .

The secondary node addition request confirmation signaling receiving module 706 may be configured to receive secondary node addition request confirmation signaling sent by the candidate target secondary node. The secondary node addition request confirmation signaling includes relevant information of the primary secondary cell for which the candidate target secondary node accepts the CPC request.

The RRC connection reconfiguration information sending module 708 may be configured to send radio resource control RRC connection reconfiguration information to the target terminal, and the RRC connection reconfiguration information includes indication information using the CPAC mechanism and identification and/or related information of candidate target secondary nodes.

The RRC connection reconfiguration completion information receiving module 710 may be configured to receive the RRC connection reconfiguration completion information sent by the target terminal.

The secondary node change confirmation signaling sending module 712 is configured to send secondary node change confirmation signaling to the source secondary node. The secondary node change confirmation signaling includes a first preset information element, and the first preset information element is used to indicate that the source secondary node is accepted. Information about the primary and secondary cells requested by the node for the conditional primary and secondary cell change CPC of the target terminal. The first preset information element may include an identification information element of a candidate primary-secondary cell or an identification information element of a prepared primary-secondary cell.

The secondary node change confirmation signaling may further include a target secondary node identification information element, which is used to indicate the identification of the candidate target secondary node that has accepted the CPC request for the target terminal initiated by the source secondary node.

The secondary node change acknowledgment signaling may also include RRC related information, and the RRC related information is obtained by encapsulating the RRC connection reconfiguration completion information sent by the target terminal.

Fig. 8 is a block diagram of another information transmission device according to an exemplary embodiment. The apparatus shown in FIG. 8 may be applied to a secondary node in a dual connectivity network, for example, may be a source secondary node that initiates a CPC process.

Referring to FIG. 8 , the device 80 provided by this embodiment of the present disclosure may include a secondary node change confirmation signaling receiving module 802, which may be used to receive the secondary node change confirmation signaling sent by the primary node, and the secondary node change confirmation signaling includes the first preset signal The first preset information element is used to indicate the relevant information of the primary secondary cell that accepts the CPC request for the target terminal initiated by the secondary node.

Fig. 9 is a block diagram of another information transmission device according to an exemplary embodiment. The apparatus shown in FIG. 9 may be applied to a secondary node in a dual connectivity network, for example, may be a source secondary node that initiates a CPC process.

Referring to FIG. 9 , the device 90 provided by this embodiment of the present disclosure may include a CPC request initiation module 9012, a secondary node change request signaling sending module 9014, a secondary node change confirmation signaling receiving module 902, a candidate primary and secondary cell number acquisition module 904, and a candidate A module 906 for limiting the number of primary and secondary cells.

The CPC request initiating module 9012 may be used to initiate a CPC request for the target terminal.

The secondary node change requirement signaling sending module 9014 may be configured to send the secondary node change requirement signaling to the primary node, the secondary node change requirement signaling includes a second preset information element, and the second preset information element is used to indicate the candidate target secondary node logo.

The secondary node change confirmation signaling receiving module 902 is configured to receive secondary node change confirmation signaling sent by the primary node. The secondary node change confirmation signaling includes a first preset information element, and the first preset information element is used to indicate acceptance of the secondary node initiation Information about the primary and secondary cells requested by the CPC for the target terminal. The first preset information element includes an identification information element of a candidate primary-secondary cell or an identification information element of a prepared primary-secondary cell.

The module 904 for obtaining the number of candidate primary and secondary cells may be configured to obtain the number of primary and secondary cells that accept the CPC request for the target terminal initiated by the secondary node according to the first preset information element.

The limiting module for the number of candidate primary and secondary cells 906 can be configured to decide to initiate a target secondary node to a candidate target secondary node when the number of primary secondary cells that accept the CPC request for the target terminal initiated by the secondary node is less than the preset maximum number of supported candidate primary and secondary cells. The CPC request of the target terminal.

The module 906 for limiting the number of candidate primary and secondary cells can also be used to decide not to initiate a CPC request for the target terminal when the number of primary and secondary cells that accept the CPC request for the target terminal initiated by the secondary node is equal to the preset maximum number of supported candidate primary and secondary cells. CPC requests.

The module 906 for limiting the number of candidate primary and secondary cells can also be used to decide to send a request to the candidate target secondary node when the number of primary secondary cells that accept the CPC request for the target terminal initiated by the secondary node is greater than the preset maximum number of supported candidate primary and secondary cells. CPC cancellation process for the target terminal.

For the specific implementation of each module in the device provided by the embodiment of the present disclosure, reference may be made to the content in the above method, and details are not repeated here.

Fig. 10 shows a schematic structural diagram of an electronic device in an embodiment of the present disclosure. It should be noted that the device shown in FIG. 10 is only an example of a computer system, and should not limit the functions and scope of use of the embodiments of the present disclosure.

As shown in FIG. 10 , a device 1000 includes a central processing unit (CPU) 1001 that can operate according to a program stored in a read-only memory (ROM) 1002 or a program loaded from a storage section 1008 into a random access memory (RAM) 1003 Various appropriate actions and processes are performed. In the RAM 1003, various programs and data necessary for the operation of the device 1000 are also stored. The CPU 1001, ROM 1002, and RAM 1003 are connected to each other via a bus 1004. An input/output (I/O) interface 1005 is also connected to the bus 1004 .

The following components are connected to the I/O interface 1005: an input section 1006 including a keyboard, a mouse, etc.; an output section 1007 including a cathode ray tube (CRT), a liquid crystal display (LCD), etc., and a speaker; a storage section 1008 including a hard disk, etc. and a communication section 1009 including a network interface card such as a LAN card, a modem, or the like. The communication section 1009 performs communication processing via a network such as the Internet. A drive 1010 is also connected to the I/O interface 1005 as needed. A removable medium 1011, such as a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., is mounted on the drive 1010 as necessary so that a computer program read therefrom is installed into the storage section 1008 as necessary.

In particular, according to an embodiment of the present disclosure, the processes described above with reference to the flowcharts can be implemented as computer software programs. For example, embodiments of the present disclosure include a computer program product, which includes a computer program carried on a computer-readable medium, where the computer program includes program codes for executing the methods shown in the flowcharts. In such an embodiment, the computer program may be downloaded and installed from a network via communication portion 1009 and/or installed from removable media 1011 . When this computer program is executed by a central processing unit (CPU) 1001, the above-described functions defined in the system of the present disclosure are performed.

It should be noted that the computer-readable medium shown in the present disclosure may be a computer-readable signal medium or a computer-readable storage medium or any combination of the above two. A computer readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any combination thereof. More specific examples of computer-readable storage media may include, but are not limited to, electrical connections with one or more wires, portable computer diskettes, hard disks, random access memory (RAM), read-only memory (ROM), erasable Programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage device, magnetic storage device, or any suitable combination of the above. In the present disclosure, a computer-readable storage medium may be any tangible medium that contains or stores a program that can be used by or in conjunction with an instruction execution system, apparatus, or device. In the present disclosure, however, a computer-readable signal medium may include a data signal propagated in baseband or as part of a carrier wave, carrying computer-readable program code therein. Such propagated data signals may take many forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the foregoing. A computer-readable signal medium may also be any computer-readable medium other than a computer-readable storage medium, which can send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device. . Program code embodied on a computer readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wireline, optical fiber cable, RF, etc., or any suitable combination of the foregoing.

The flowchart and block diagrams in the Figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present disclosure. In this regard, each block in a flowchart or block diagram may represent a module, program segment, or portion of code that includes one or more logical functions for implementing specified executable instructions. It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or they may sometimes be executed in the reverse order, depending upon the functionality involved. It should also be noted that each block in the block diagrams or flowchart illustrations, and combinations of blocks in the block diagrams or flowchart illustrations, can be implemented by a dedicated hardware-based system that performs the specified function or operation, or can be implemented by a A combination of dedicated hardware and computer instructions.

The modules involved in the embodiments described in the present disclosure may be implemented by software or by hardware. The described modules may also be set in a processor, for example, it may be described as: a processor includes a secondary node change confirmation signaling sending module. Among them, the name of the module does not constitute a limitation on the module itself under certain circumstances. For example, the secondary node change confirmation signaling sending module can also be described as "sending the target secondary node change confirmation to the source secondary node that initiated the CPC request. Signaling module".

As another aspect, the present disclosure also provides a computer-readable medium, which may be included in the device described in the above embodiments, or may exist independently without being assembled into the device. The above-mentioned computer-readable medium carries one or more programs, and when the above-mentioned one or more programs are executed by the device, the device includes:

Send secondary node change acknowledgment signaling to the source secondary node, where the secondary node change confirmation signaling includes a first preset information element, and the first preset information element is used to indicate acceptance of the conditional PSC change for the target terminal initiated by the source secondary node Information about the primary and secondary cells requested by the CPC.

Exemplary embodiments of the present disclosure have been specifically shown and described above. It should be understood that the disclosure is not limited to the detailed structures, arrangements or methods of implementation described herein; on the contrary, the disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims (14)

1. An information transmission method, which is applied to a master node, comprising:

   Send secondary node change acknowledgment signaling to the source secondary node, where the secondary node change confirmation signaling includes a first preset information element, and the first preset information element is used to indicate acceptance of the target terminal initiated by the source secondary node The condition of the primary and secondary cell changes the relevant information of the primary and secondary cell requested by the CPC.
2. The method according to claim 1, wherein the first preset information element includes an identification information element of a candidate primary-secondary cell or an identification information element of a prepared primary-secondary cell.
3. The method according to claim 1 or 2, further comprising:

   receiving the secondary node change requirement signaling sent by the source secondary node when the CPC request for the target terminal is initiated, the secondary node change requirement signaling includes a second preset information element, and the second preset It is assumed that the information element is used to indicate the identity of the candidate target secondary node;

   Sending secondary node addition request signaling to the corresponding candidate target secondary node according to the identifier of the candidate target secondary node, where the secondary node addition request signaling includes indication information for adding or changing the CPAC mechanism of the conditional primary secondary cell;

   receiving secondary node addition request confirmation signaling sent by the candidate target secondary node, where the secondary node addition request confirmation signaling includes relevant information of the primary secondary cell for which the candidate target secondary node accepts the CPC request;

   Sending radio resource control RRC connection reconfiguration information to the target terminal, where the RRC connection reconfiguration information includes the indication information of adopting the CPAC mechanism and the identity and/or related information of the candidate target secondary node;

   Receive RRC connection reconfiguration completion information sent by the target terminal.
4. The method according to claim 1, wherein the secondary node change acknowledgment signaling further includes a target secondary node identification information element, and the target secondary node identification information element is used to indicate that the request initiated by the source secondary node has been accepted. The identifier of the target secondary node of the CPC request of the target terminal.
5. The method according to claim 3, wherein the secondary node change acknowledgment signaling further includes RRC related information, and the RRC related information is obtained by encapsulating the RRC connection reconfiguration completion information sent by the target terminal.
6. An information transmission method, applied to a secondary node, comprising:

   Receive the secondary node change confirmation signaling sent by the primary node, the secondary node change confirmation signaling includes a first preset information element, and the first preset information element is used to indicate acceptance of the target terminal initiated by the secondary node Information about the primary and secondary cells requested by the CPC.
7. The method according to claim 6, wherein the first preset information element includes an identification information element of a candidate primary-secondary cell or an identification information element of a prepared primary-secondary cell.
8. The method according to claim 6 or 7, further comprising:

   Obtain the number of primary secondary cells that accept the CPC request for the target terminal initiated by the secondary node according to the first preset information element;

   When the number of primary secondary cells that accept the CPC request for the target terminal initiated by the secondary node is less than the preset maximum number of supported candidate primary secondary cells, decide to initiate the CPC for the target terminal to the candidate target secondary node ask.
9. The method according to claim 8, further comprising:

   When the number of primary-secondary cells that accept the CPC request for the target terminal initiated by the secondary node is equal to the preset maximum number of supported candidate primary-secondary cells, it is decided not to initiate a CPC request for the target terminal.
10. The method according to claim 8, further comprising:

    When the number of primary secondary cells that accept the CPC request for the target terminal initiated by the secondary node is greater than the preset maximum number of supported candidate primary secondary cells, decide to initiate a target terminal target secondary node candidate CPC cancellation process.
11. An information transmission device, which is applied to a master node, comprising:

    A secondary node change acknowledgment signaling sending module, configured to send a secondary node change acknowledgment signaling to the source secondary node, the secondary node change acknowledgment signaling includes a first preset information element, and the first preset information element is used to indicate Accepting the primary secondary cell related information of the conditional primary secondary cell change CPC request for the target terminal initiated by the source secondary node.
12. An information transmission device, which is applied to a secondary node, includes:

    The secondary node change confirmation signaling receiving module is configured to receive the secondary node change confirmation signaling sent by the master node, the secondary node change confirmation signaling includes a first preset information element, and the first preset information element is used to indicate Relevant information of the primary and secondary cells that accept the CPC request for the target terminal initiated by the secondary node.
13. An apparatus comprising: a memory, a processor, and executable instructions stored in the memory and operable in the processor, wherein the processor implements claims 1- 10 the method described in any one.
14. A computer-readable storage medium, on which computer-executable instructions are stored, wherein, when the executable instructions are executed by a processor, the method according to any one of claims 1-10 is implemented.

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