Information transmission method and device, terminal and network equipment

Abstract

Provided are an information transmission method, device, terminal and network device, the method being executed by the network device, the method comprising: receiving first information sent by the terminal, the first information being used for assisting a network side to perform mobility robustness optimization (MRO) related to a target action; the target action comprises main cell transformation of the continuous auxiliary cell group, and the main cell transformation of the continuous auxiliary cell group is at least one time of transformation of the main cell of the auxiliary cell group carried out by the terminal based on candidate cells under at least one auxiliary cell group and transformation execution conditions corresponding to each candidate cell; or switching the main cells of the continuous main cell group, wherein the switching of the main cells of the continuous main cell group is that the terminal switches the main cells of the main cell group for at least one time based on the candidate cells of the at least one main cell group and the switching execution condition corresponding to each candidate cell. According to the scheme, the access success rate of the terminal under the condition of continuous PSCell conversion or continuous PCell switching can be ensured, and the network performance index is improved.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to an information transmission method, device, terminal and network equipment. Background Art

[0002] In order to meet the mobility requirements of the terminal, the main cell change of continuous secondary cell groups (continuous PSCell change) and the main cell switching of continuous main cell groups (continuous PCell switching) are proposed. However, how to ensure the access success rate of the terminal in the case of continuous PSCell change or continuous PCell switching is an urgent problem to be solved. Summary of the invention

[0003] The embodiments of the present application provide an information transmission method, apparatus, terminal and network equipment to ensure the access success rate of the terminal in the case of continuous PSCell transformation or continuous PCell switching.

[0004] In order to solve the above technical problems, an embodiment of the present application provides an information transmission method, which is performed by a network device, including:

[0005] receiving first information sent by a terminal, where the first information is used to assist a network side in performing a mobility robustness optimization MRO associated with a target action;

[0006] Wherein, the first information is used to indicate relevant information of the target action;

[0007] The target actions include:

[0008] a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or

[0009] The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

[0010] Optionally, the first information includes at least one of the following:

[0011] Cell identification information, where the cell indicated by the cell identification information is the cell that triggers the target action;

[0012] The identification information of the terminal in the cell that triggers the target action;

[0013] The cell identification information of the first target cell accessed by the terminal during the target action, wherein the first target cell satisfies: the cell accessed by the terminal after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell;

[0014] identification information of the terminal in the first target cell accessed during the process of executing the target action;

[0015] first indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action;

[0016] cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action;

[0017] identification information of the terminal in the second target cell;

[0018] A list of candidate cells and / or execution conditions corresponding to the candidate cells updated during the target action;

[0019] The candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action.

[0020] Optionally, the first information sent by the receiving terminal includes:

[0021] receiving a first target message sent by the terminal, where the first target message carries the first information;

[0022] The first target message includes at least one of the following:

[0023] Secondary cell group failure message;

[0024] Radio link failure report;

[0025] Successful switching report;

[0026] Other reports except radio link failure report and successful handover report.

[0027] Optionally, the method further includes:

[0028] Sending second information to the target node, where the second information includes the first information, and the second information is used for the target node to perform MRO.

[0029] Optionally, sending the second information to the target node includes:

[0030] Sending a second target message to the target node, where the second target message carries the second information;

[0031] The second target message includes at least one of the following:

[0032] Secondary cell group failure information report message;

[0033] Secondary cell group failure transfer message;

[0034] Other inter-network interface messages except the secondary cell group failure information report message and the secondary cell group failure transfer message;

[0035] Failure indication message;

[0036] Switch report message;

[0037] Uplink wireless access network element configuration transmission message;

[0038] Downlink wireless access network element configuration transmission message;

[0039] Other inter-network interface messages except failure indication message, handover report message, uplink radio access network element configuration transmission message and downlink radio access network element configuration transmission message.

[0040] Optionally, when the target action is a primary cell change of a continuous secondary cell group, the target node includes at least one of the following:

[0041] A node that triggers a primary cell change of a continuous secondary cell group;

[0042] A node that triggers updating of a candidate cell list of a primary cell of a secondary cell group during a primary cell change of a continuous secondary cell group;

[0043] a first auxiliary node, the first auxiliary node being the auxiliary node to which the terminal is connected before being transformed to the second auxiliary node, and the second auxiliary node being the auxiliary node to which the terminal has been connected and which provides services for the terminal;

[0044] The target node when the auxiliary node transformation fails.

[0045] Optionally, when the target action is primary cell switching of a continuous primary cell group, the target node includes at least one of the following:

[0046] A node that triggers primary cell switching of a continuous primary cell group;

[0047] A node that triggers an update of a candidate cell list during a primary cell handover of a continuous primary cell group;

[0048] The node where the target cell of the handover is located;

[0049] The node where the source cell of the successful handover is located.

[0050] Optionally, when the target action is a primary cell change of a continuous secondary cell group, the second information further includes at least one of the following:

[0051] Candidate cells for primary cell transformation of consecutive secondary cell groups and / or transformation execution conditions corresponding to candidate cells for primary cell transformation of consecutive secondary cell groups;

[0052] The candidate cells updated during the primary cell change process of the consecutive secondary cell group and / or the change execution conditions corresponding to the candidate cells updated during the primary cell change process of the consecutive secondary cell group;

[0053] A configuration node for a change execution condition corresponding to a candidate cell for performing a primary cell change of a continuous secondary cell group;

[0054] The second indication information is used for configuring a primary cell change of a continuous secondary cell group when a secondary cell group failure or a random access failure occurs.

[0055] The embodiment of the present application also provides an information transmission method, which is executed by a terminal, including:

[0056] Sending first information to a network device, where the first information is used by the network side to perform mobility robustness optimization (MRO) related to a target action;

[0057] Wherein, the first information is used to indicate relevant information of the target action;

[0058] The target actions include:

[0059] a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or

[0060] The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

[0061] Optionally, the first information includes at least one of the following:

[0062] Cell identification information, where the cell indicated by the cell identification information is the cell that triggers the target action;

[0063] The identification information of the terminal in the cell that triggers the target action;

[0064] The cell identification information of the first target cell accessed by the terminal during the target action, wherein the first target cell satisfies: the cell accessed by the terminal after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell;

[0065] identification information of the terminal in the first target cell accessed during the process of executing the target action;

[0066] first indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action;

[0067] cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action;

[0068] identification information of the terminal in the second target cell;

[0069] A list of candidate cells and / or execution conditions corresponding to the candidate cells updated during the target action;

[0070] The candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action.

[0071] Optionally, sending the first information to the network device includes:

[0072] Sending a first target message to the network device, where the first target message carries the first information;

[0073] The first target message includes at least one of the following:

[0074] Secondary cell group failure message;

[0075] Radio link failure report;

[0076] Successful switching report;

[0077] Other reports except radio link failure report and successful handover report.

[0078] The embodiment of the present application also provides a network device, including a memory, a transceiver, and a processor:

[0079] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0080] Receiving, by a transceiver, first information sent by a terminal, where the first information is used to assist a network side in performing a mobility robustness optimization MRO associated with a target action;

[0081] Wherein, the first information is used to indicate relevant information of the target action;

[0082] The target actions include:

[0083] a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or

[0084] The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

[0085] Optionally, the first information includes at least one of the following:

[0086] Cell identification information, where the cell indicated by the cell identification information is the cell that triggers the target action;

[0087] The identification information of the terminal in the cell that triggers the target action;

[0088] The cell identification information of the first target cell accessed by the terminal during the target action, wherein the first target cell satisfies: the cell accessed by the terminal after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell;

[0089] identification information of the terminal in the first target cell accessed during the process of executing the target action;

[0090] first indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action;

[0091] cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action;

[0092] identification information of the terminal in the second target cell;

[0093] A list of candidate cells and / or execution conditions corresponding to the candidate cells updated during the target action;

[0094] The candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action.

[0095] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0096] receiving, by a transceiver, a first target message sent by the terminal, wherein the first target message carries the first information;

[0097] The first target message includes at least one of the following:

[0098] Secondary cell group failure message;

[0099] Radio link failure report;

[0100] Successful switching report;

[0101] Other reports except radio link failure report and successful handover report.

[0102] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0103] The second information is sent to the target node through the transceiver, where the second information includes the first information, and the second information is used for the target node to perform MRO.

[0104] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0105] Sending a second target message to the target node through a transceiver, wherein the second target message carries the second information;

[0106] The second target message includes at least one of the following:

[0107] Secondary cell group failure information report message;

[0108] Secondary cell group failure transfer message;

[0109] Other inter-network interface messages except the secondary cell group failure information report message and the secondary cell group failure transfer message;

[0110] Failure indication message;

[0111] Switch report message;

[0112] Uplink wireless access network element configuration transmission message;

[0113] Downlink wireless access network element configuration transmission message;

[0114] Other inter-network interface messages except failure indication message, handover report message, uplink radio access network element configuration transmission message and downlink radio access network element configuration transmission message.

[0115] Optionally, when the target action is a primary cell change of a continuous secondary cell group, the target node includes at least one of the following:

[0116] A node that triggers a primary cell change of a continuous secondary cell group;

[0117] A node that triggers updating of a candidate cell list of a primary cell of a secondary cell group during a primary cell change of a continuous secondary cell group;

[0118] a first auxiliary node, the first auxiliary node being the auxiliary node to which the terminal is connected before being transformed to the second auxiliary node, and the second auxiliary node being the auxiliary node to which the terminal has been connected and which provides services for the terminal;

[0119] The target node when the auxiliary node transformation fails.

[0120] Optionally, when the target action is primary cell switching of a continuous primary cell group, the target node includes at least one of the following:

[0121] A node that triggers primary cell switching of a continuous primary cell group;

[0122] A node that triggers an update of a candidate cell list during a primary cell handover of a continuous primary cell group;

[0123] The node where the target cell of the handover is located;

[0124] The node where the source cell of the successful handover is located.

[0125] Optionally, when the target action is a primary cell change of a continuous secondary cell group, the second information further includes at least one of the following:

[0126] Candidate cells for primary cell transformation of consecutive secondary cell groups and / or transformation execution conditions corresponding to candidate cells for primary cell transformation of consecutive secondary cell groups;

[0127] The candidate cells updated during the primary cell change process of the consecutive secondary cell group and / or the change execution conditions corresponding to the candidate cells updated during the primary cell change process of the consecutive secondary cell group;

[0128] A configuration node for a change execution condition corresponding to a candidate cell for performing a primary cell change of a continuous secondary cell group;

[0129] The second indication information is used for configuring a primary cell change of a continuous secondary cell group when a secondary cell group failure or a random access failure occurs.

[0130] The embodiment of the present application further provides a terminal, characterized in that it includes a memory, a transceiver, and a processor:

[0131] A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations:

[0132] Sending first information to a network device, where the first information is used by the network side to perform mobility robustness optimization (MRO) related to a target action;

[0133] Wherein, the first information is used to indicate relevant information of the target action;

[0134] The target actions include:

[0135] a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or

[0136] The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

[0137] Optionally, the first information includes at least one of the following:

[0138] Cell identification information, where the cell indicated by the cell identification information is the cell that triggers the target action;

[0139] The identification information of the terminal in the cell that triggers the target action;

[0140] The cell identification information of the first target cell accessed by the terminal during the target action, wherein the first target cell satisfies: the cell accessed by the terminal after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell;

[0141] identification information of the terminal in the first target cell accessed during the process of executing the target action;

[0142] first indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action;

[0143] cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action;

[0144] identification information of the terminal in the second target cell;

[0145] A list of candidate cells and / or execution conditions corresponding to the candidate cells updated during the target action;

[0146] The candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action.

[0147] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0148] Sending a first target message to the network device through a transceiver, wherein the first target message carries the first information;

[0149] The first target message includes at least one of the following:

[0150] Secondary cell group failure message;

[0151] Radio link failure report;

[0152] Successful switching report;

[0153] Other reports except radio link failure report and successful handover report.

[0154] The embodiment of the present application further provides an information transmission device, which is applied to a network device, including:

[0155] A receiving unit, configured to receive first information sent by a terminal, wherein the first information is used to assist a network side in performing a mobility robustness optimization MRO associated with a target action;

[0156] Wherein, the first information is used to indicate relevant information of the target action;

[0157] The target actions include:

[0158] a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or

[0159] The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

[0160] The embodiment of the present application further provides an information transmission device, applied to a terminal, including:

[0161] A first sending unit, configured to send first information to a network device, wherein the first information is used for a network side to perform a mobility robustness optimization MRO related to a target action;

[0162] Wherein, the first information is used to indicate relevant information of the target action;

[0163] The target actions include:

[0164] a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or

[0165] The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

[0166] An embodiment of the present application further provides a processor-readable storage medium, wherein the processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the above method.

[0167] The beneficial effects of this application are:

[0168] The above scheme assists the network side in performing MRO related to continuous PSCell transformation or continuous PCell switching by receiving information related to continuous PSCell transformation or continuous PCell switching sent by the terminal, thereby ensuring the access success rate of the terminal in the case of continuous PSCell transformation or continuous PCell switching and improving network performance indicators. BRIEF DESCRIPTION OF THE DRAWINGS

[0169] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0170] Figure 1 A structural diagram showing a network system applicable to an embodiment of the present application;

[0171] Figure 2 A schematic diagram showing a flow chart of an information transmission method according to an embodiment of the present application;

[0172] Figure 3 A flow chart showing the occurrence of SCG failure in continuous PSCell transformation;

[0173] Figure 4 A schematic diagram showing a process flow of random access failure in continuous PSCell transformation;

[0174] Figure 5 A schematic diagram showing the process of RLF occurring during continuous PCell switching;

[0175] Figure 6 A schematic diagram showing a process flow of random access failure in continuous PCell switching;

[0176] Figure 7 A second flowchart of the information transmission method according to an embodiment of the present application is shown;

[0177] Figure 8 One of the unit schematic diagrams showing the information transmission device according to an embodiment of the present application;

[0178] Fig. 9 A structural diagram showing a network device according to an embodiment of the present application;

[0179] Fig.10 A second schematic diagram of a unit showing an information transmission device according to an embodiment of the present application;

[0180] Fig.11 A structural diagram of a terminal according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0181] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0182] The terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequential order. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein, for example, are implemented in a sequence other than those illustrated or described herein. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, the process, method, system, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0183] In the embodiments of the present application, the term "and / or" describes the association relationship of associated objects, indicating that three relationships may exist. For example, A and / or B can represent three situations: A exists alone, A and B exist at the same time, and B exists alone. The character " / " generally indicates that the associated objects before and after are in an "or" relationship. In the embodiments of the present application, the term "plurality" refers to two or more than two, and other quantifiers are similar.

[0184] In the embodiments of the present application, words such as "exemplary" or "for example" are used to indicate examples, illustrations or descriptions. Any embodiment or design described as "exemplary" or "for example" in the embodiments of the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary" or "for example" is intended to present related concepts in a specific way.

[0185] The relevant concepts mentioned in this application are briefly described below.

[0186] 1. Multi-Radio Dual Connectivity (MR-DC) network architecture

[0187] In a multi-connection architecture, a user equipment (UE) may be connected to a master node (MN) and one or more secondary nodes (SN), and perform signaling and / or data interaction with these network nodes. Both MN and SN nodes can be Long Term Evolution (LTE) / e-LTE / New Radio (NR) nodes. When there is a MN node and a SN node, it can be called dual connection (DC).

[0188] When the UE is in a connected state, it can be connected to one or more network-side nodes, and the network node can be in one or more radio access technologies (Radio Access Technology, RAT). For example, when the MN is an LTE node and the SN is an NR node, it is (NG) EN-DC dual connection; when the MN is an NR node and the SN is an LTE node, it is NE-DC dual connection; when both the MN and the SN are NR nodes, it is NR-NR-DC.

[0189] The secondary cell group (SCG) is a service cell group under MR-DC and SN, including a primary cell of a master or secondary cell group (PSCell) and one or more secondary cells (Scell) that may exist.

[0190] 2. Traditional master cell group master cell (SpCell of a master cell group, Pcell) failure processing

[0191] In case of traditional handover failure or radio link failure, the UE generates a Radio Link Failure (RLF) report.

[0192] The RLF report contains the following:

[0193] The measurement result of a serving cell on the terminal;

[0194] Terminal switching source cell identification information;

[0195] The terminal confirms the neighboring cell measurement result after the handover failure or radio link failure;

[0196] Terminal location information;

[0197] Terminal failure cell identification information;

[0198] The terminal reconstructs the cell identification information;

[0199] Cell identification information for conditional handover recovery after conditional handover failure;

[0200] UE reporting timer: the duration from the last time the terminal confirmed the receipt of the handover initiation message to the time the connection failed;

[0201] Reason for connection failure: handover failure or wireless link failure;

[0202] Cell Radio Network Temporary Indentifier (C-RNTI) used when the terminal fails to connect;

[0203] Radio link failure sub-reasons: T310 timeout or random access problem or Radio Link Control (RLC) layer reaches maximum retransmission or Beam Failure Recovery Failure (BFRF);

[0204] The time it takes for the terminal to report the RLF report after the terminal confirms the connection failure;

[0205] Tracking Area Code (TAC) of the cell where the connection failed;

[0206] Bluetooth (Blue Tooth, BT) related record results;

[0207] Wireless Local Area Network (WLAN);

[0208] The above cell identification information adopts a cell global identity (Cell Global Identity, CGI) / physical cell identity (Physical Cell Identity, PCI)+frequency point identifier.

[0209] After the UE records the RLF report, it notifies the network side to obtain it through the Radio Resource Control (RRC) connection establishment complete, RRC connection reconfiguration complete, RRC connection reestablishment complete or RRC recovery complete message. The network side sends a UE information request message to the UE, and the UE sends the RLF report to the network through a UE information response message, and the UE side clears the previously recorded information.

[0210] After the network receives the RLF report, it is used to optimize the handover configuration. The inter-node messages involved include failure indication messages and handover report messages.

[0211] Failure indication message:

[0212] After the network node obtains the RLF report of the UE, if the current node is not the node where the failure occurs, it is necessary to forward the RLF report and other related information to the failed network node between networks to facilitate the failed node to perform analysis and optimization.

[0213] Handover report message:

[0214] After the network failure node analyzes the failure indication message, it may need to continue sending handoverreport messages.

[0215] 3. Traditional PSCell failure related processing

[0216] RLF is divided into two types: Master Cell Group (MCG) and Secondary Cell Group (SCG). If a radio link failure occurs in the MCG, the UE triggers the RRC connection re-establishment process. If a failure occurs in the SCG, the UE sends an SCG failure information message to the MN node.

[0217] The message content mainly includes the PSCell cell ID where the failure occurred, the source PSCell cell ID where the PSCell cell change occurred, the length of time from the PSCell cell change to the SCG failure, random access related information recorded when random access failed, SCG failure type, UE measurement results, etc.

[0218] After the network receives the SCG failure information message, it is used to optimize the PSCell mobility. The inter-node messages involved are the secondary cell group failure information report (SCG FAILURE INFORMATION REPORT) message and the secondary cell group failure transfer (SCG FAILURE TRANSFER message).

[0219] In R17, 3GPP introduced the SCG FAILUREINFORMATION REPORT message and SCG FAILURE TRANSFER message to handle SCG failure analysis in NR-NR-DC scenarios.

[0220] SCG FAILURE INFORMATION REPORT is a message sent from the MN to the SN, including the content of the SCG failure information message received by the MN air interface, the UE ID information, etc.

[0221] When the SN receives the SCG FAILURE INFORMATION REPORT message and finds that other nodes need to perform parameter optimization after analysis, it sends the SCG FAILURE TRANSFER message to the MN, which includes the UE ID information. The MN may perform the optimization itself or continue to send the SCG FAILURE INFORMATION REPORT message to other related SN nodes.

[0222] 4. R18 mobility enhancement

[0223] SCG continuous PSCell cell change also pre-configures multiple PSCell candidate cells and execution conditions at layer 3. The UE evaluates the execution conditions and implements the PSCell change when the conditions are met. It then saves the configuration and continues to evaluate the execution conditions. When the conditions are met, it continues to execute the PSCell change until the configuration of the continuous PSCell change is released.

[0224] MCG continuous PCell cell switching is similar to SCG continuous PSCell cell change. It also pre-configures multiple PCell candidate cells and execution conditions. The UE evaluates the execution conditions and implements PCell switching when the conditions are met. Then it saves the configuration and continues to evaluate the execution conditions. When the conditions are met, it continues to execute PCell switching until the continuous switching configuration is released.

[0225] The following is an introduction to the embodiments of the present application in conjunction with the accompanying drawings. The information transmission method, device, terminal and network device provided in the embodiments of the present application can be applied to a wireless communication system. The wireless communication system can be a system using the fifth generation (5th Generation, 5G) mobile communication technology (hereinafter referred to as a 5G system). Those skilled in the art can understand that the 5G NR system is only an example and is not a limitation.

[0226] See also Figure 1 , Figure 1 is a structural diagram of a network system to which the embodiments of the present application can be applied, such as Figure 2 As shown, it includes a user terminal 11 and a base station 12, wherein the user terminal 11 may be a user equipment (UE), for example, it may be a terminal side device such as a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a personal digital assistant (PDA for short), a mobile Internet device (Mobile Internet Device, MID) or a wearable device (Wearable Device). It should be noted that the specific type of the user terminal 11 is not limited in the embodiment of the present application. The above-mentioned base station 12 may be a base station of 5G and later versions (for example: gNB, 5G NR NB), or a base station in other communication systems or a gateway station supporting satellite communication, or referred to as a node B. It should be noted that in the embodiment of the present application, only a 5G base station is taken as an example, but the specific type of the base station 12 is not limited.

[0227] The embodiments of the present application provide an information transmission method, apparatus, terminal and network equipment to ensure the access success rate of the terminal in the case of continuous PSCell transformation or continuous PCell switching.

[0228] Among them, the method and the device are based on the same application concept. Since the method and the device solve the problem in a similar principle, the implementation of the device and the method can refer to each other, and the repeated parts will not be repeated.

[0229] like Figure 2 As shown, an embodiment of the present application provides an information transmission method, which is executed by a network device, including:

[0230] Step S101, receiving first information sent by a terminal, where the first information is used to assist a network side in performing a mobility robustness optimization MRO related to a target action;

[0231] Wherein, the first information is used to indicate relevant information of the target action;

[0232] Optionally, the target action includes at least one of the following:

[0233] A11, primary cell (PSCell) transformation of consecutive secondary cell groups, wherein the primary cell transformation of the consecutive secondary cell groups is that the terminal transforms the primary cell of the secondary cell group at least once based on the candidate cells under at least one secondary cell group and the transformation execution condition corresponding to each candidate cell;

[0234] That is to say, continuous PSCell transformation can be understood as the network side pre-configuring one or more candidate cells under the secondary cell group and the transformation execution conditions corresponding to each candidate cell for the terminal. The terminal can switch between multiple candidate cells based on the transformation execution conditions based on the actual situation; that is to say, compared with discontinuous PSCell transformation, continuous PSCell transformation does not require the network side to perform measurement collection, mobility judgment and send PSCell transformation signaling to the terminal between each transformation.

[0235] A12, primary cell (PCell) switching of a continuous primary cell group, wherein the primary cell switching of the continuous primary cell group is that the terminal performs at least one switching of the primary cell of the primary cell group based on at least one candidate cell under the primary cell group and a switching execution condition corresponding to each candidate cell;

[0236] That is to say, continuous PCell switching can be understood as the network side pre-configuring one or more candidate cells under the main cell group and the corresponding transformation execution conditions for each candidate cell for the terminal. The terminal can switch between multiple candidate cells based on the switching execution conditions based on the actual situation; that is to say, compared with non-continuous PCell switching, continuous PCell switching does not require the network side to perform measurement collection, mobility judgment and send switching signaling to the terminal between each switch.

[0237] It should be noted that the embodiments of the present application are mainly aimed at the scenarios of continuous PSCell transformation and continuous PCell switching, and a method for reporting information for continuous PSCell transformation and / or continuous PCell switching is proposed. By recording relevant information in the process of continuous PSCell transformation and / or continuous PCell switching and sending it to the network side, it can assist the network side in performing MRO related to continuous PSCell transformation and / or continuous PCell switching, so as to improve the success rate of continuous PCell switching and / or continuous PSCell transformation and improve network performance indicators.

[0238] Optionally, the node performing MRO may be a network device that directly receives the first information sent by the terminal, or may be a network device other than the network device that receives the first information sent by the terminal, that is, after receiving the first information sent by the terminal, the network device sends the first information to other network devices so that the other network devices perform MRO.

[0239] Optionally, in an implementation manner, the first information includes at least one of the following:

[0240] B11, cell identification information, the cell indicated by the cell identification information is the cell that triggers the target action;

[0241] It should be noted that, in the case of A11 above, the continuous PSCell transformation can be triggered by either the master node or the slave node; for example, if the continuous PSCell transformation is triggered by the master node, the cell identification information in this case refers to the cell identification information of the cell under the master node, and the cell is usually the master cell under the master node. For example, if the continuous PSCell transformation is triggered by the slave node, the cell identification information in this case refers to the cell identification information of the cell under the slave node, and the cell is usually the master cell under the slave node.

[0242] B12, identification information of the terminal in the cell that triggers the target action;

[0243] It should be noted here that the terminal may use different identifiers for different cells, and the terminal identifier corresponds to the cell. In this case, the cell that triggers the target action can also be indirectly indicated by the identifier information of the terminal in the cell that triggers the target action. The identifier information can be understood as the terminal identifier information.

[0244] B13, cell identification information of the first target cell accessed by the terminal during the target action;

[0245] It should be noted that the first target cell satisfies: the cell to which the terminal accesses after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell;

[0246] It should be noted here that in the case of continuous PSCell changes and continuous PCell switching, after the terminal accesses a certain cell, the cell can modify the cell information that the terminal can access later, that is, modify the candidate cell, or modify the execution conditions corresponding to the candidate cell. The execution conditions can be understood as the conditions that the terminal needs to meet to access the cell. In this case, it is to record which cells among the cells accessed by the terminal have modified the candidate cells and / or the execution conditions corresponding to the candidate cells.

[0247] For example, for continuous PSCell changes, the terminal changes from auxiliary node 1 to auxiliary node 2, and then changes from auxiliary node 2 to auxiliary node 3. The cell accessed by the terminal under auxiliary node 2 has modified the candidate cell, so the terminal needs to record the identification information of the cell under auxiliary node 2.

[0248] B14, identification information of the terminal in the first target cell accessed during the execution of the target action;

[0249] Optionally, the usage of this case is similar to that of B12, that is, the first target cell is indirectly indicated through the identification information of the terminal in the first target cell.

[0250] Regarding the above-mentioned B13 and B14, it should be noted that, for example, a continuous PSCell change is triggered. When the terminal accesses a specific PSCell, the PSCell triggers the modification of the candidate cell list and / or the execution conditions corresponding to the candidate cell. Then the terminal needs to record the cell identification information of the PSCell and / or the identification information of the terminal in the PSCell.

[0251] B15. First indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action;

[0252] It should be noted that the failure of the secondary cell group, the random access failure or the wireless link failure can be understood as a change failure of the terminal during the change (transformation or switching) process, that is, the network terminal can be notified of the change failure during the target action by sending the first indication information, and the first indication information can indicate the specific type of failure that occurred.

[0253] B16, cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action;

[0254] It should be noted here that in the case of continuous PSCell change or continuous PCell switching, the terminal can access one cell or multiple cells. This information records which cells the terminal has accessed during the continuous PSCell change or continuous PCell switching process.

[0255] B17, identification information of the terminal in the second target cell;

[0256] Optionally, the usage of this case is similar to that of B12, that is, the second target cell is indirectly indicated through the identification information of the terminal in the second target cell.

[0257] B18, the candidate cell list and / or execution conditions corresponding to the candidate cells updated during the target action;

[0258] It should be noted that the candidate cell list is used to indicate one or more candidate cells. For example, the candidate cell list includes cell identification information of one or more candidate cells.

[0259] It should be noted here that in the case of continuous PSCell changes and continuous PCell switching, after the terminal accesses a certain cell, the cell can modify the cell information that the terminal can access later, that is, modify the candidate cell, and can also modify the execution conditions corresponding to the candidate cell. In this case, it is necessary to record the changed candidate cell information and / or the changed execution conditions corresponding to the candidate cell; optionally, the terminal can only report the changed candidate cell information and / or the execution conditions corresponding to the candidate cell, and the terminal can also report all the candidate cell information and / or the execution conditions corresponding to the candidate cell after the change.

[0260] B19, a candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action;

[0261] It should be noted that the candidate cell list and / or execution conditions corresponding to the candidate cells in this case refer to the candidate cell list and / or execution conditions corresponding to the candidate cells initially configured before performing the target action.

[0262] It should be noted that the above B11 and B12 can be regarded as a category, that is, both indicate the cell that triggers the target action, B13 and B14 can be regarded as a category, that is, both indicate the first target cell, and B16 and B17 can be regarded as a category, that is, both indicate the second target cell. For example, when the terminal only reports B11 and / or B12, the network device can clearly know the node that triggers the target action, because the node that triggers the target action will configure the candidate cell and / or the execution condition corresponding to the candidate cell. Through the transmission of B11 and / or B12, the node that triggers the target action can optimize the configuration of the candidate cell and / or the execution condition corresponding to the candidate cell, and ensure the execution success rate of the target action. For example, when the terminal only reports B13 and / or B14, the network device can clearly know the node that the terminal accesses and modifies the execution condition corresponding to the candidate cell and / or the candidate cell during the execution of the target action, and the node can optimize the configuration of the candidate cell and / or the execution condition corresponding to the candidate cell, and ensure the execution success rate of the target action. For example, when the terminal only reports B15, it means that the terminal has not successfully executed the target action. At this time, the network device knows that it needs to adjust the relevant configuration to improve the execution success rate of the target action. For example, when the terminal only reports B16 and / or B17, the network device can clearly know which cells the terminal has accessed during the execution of the target action, and can assist in optimizing the configuration of the candidate cells and / or the execution conditions corresponding to the candidate cells to ensure the execution success rate of the target action. For example, when the terminal only reports B18, it can assist in optimizing the configuration of the candidate cells and / or the execution conditions corresponding to the candidate cells to improve the execution success rate of the target action. For example, when the terminal only reports B19, it can assist in optimizing the configuration of the initially configured candidate cells and / or the execution conditions corresponding to the candidate cells to improve the execution success rate of the target action. Optionally, the usage of the above-mentioned information combination can be found in the description for each independent item, which will not be repeated here.

[0263] Optionally, in one implementation, the specific implementation of the first information sent by the receiving terminal includes:

[0264] receiving a first target message sent by the terminal, where the first target message carries the first information;

[0265] The first target message includes at least one of the following:

[0266] C11, secondary cell group failure (SCG failure) message;

[0267] C12, Radio Link Failure (RLF) report;

[0268] C13, successful switching report;

[0269] C14. Other reports except radio link failure report and successful handover report.

[0270] It should be noted here that, optionally, in the case of continuous PSCell changes, if the terminal changes to access a cell under a new secondary node, but a radio link failure occurs not long after, or a random access failure occurs when the terminal changes to access a new secondary node, the above two situations can be called SCG failures. At this time, the terminal can send a secondary cell group failure (SCG failure) message and / or an RLF report to the primary node to report the first information. Optionally, when the terminal switches successfully in the case of continuous PSCell changes, the first information can also be reported in the successful switching report. Of course, the terminal can use other reports besides the radio link failure report and the successful switching report to report the first information. For example, the terminal uses a newly defined report to report the first information to the network.

[0271] Optionally, in the case of continuous PCell switching, if the terminal switches access to a cell under a new master node, but a radio link failure occurs not long after, or a random access failure occurs when the terminal switches access to a new master node, the above two situations can be called radio link failures. At this time, the terminal can send an RLF report to the master node to report the first information. Of course, the terminal can also use other reports other than the radio link failure report and the successful switching report to report the first information, for example, the terminal uses a newly defined report to report the first information to the network.

[0272] It should also be noted that for a secondary cell change failure or SCG failure, the terminal can directly send the first information to the network device. For a handover failure or RLF failure, the terminal needs to first send an indication message to the network, then wait for a network acquisition request, and then send the first information to the network device after receiving the network acquisition request.

[0273] It should be noted that, since the node that actually performs MRO may not be the node that receives the first information, optionally, in one implementation, the network device may also need to perform the following operations after receiving the first information:

[0274] Sending second information to the target node, where the second information includes the first information, and the second information is used for the target node to perform MRO.

[0275] By transmitting the second information including the first information to the target node, the target node is assisted in performing MRO, thereby improving the success rate of continuous PCell switching and / or continuous PSCell transformation.

[0276] It should be noted that, due to different target actions, the target node receiving the second information and the content included in the second information will also be different, which are explained below in different situations.

[0277] 1. The target action is continuous PSCell transformation

[0278] Optionally, in an implementation manner, the second information further includes at least one of the following:

[0279] D11, candidate cells for primary cell transformation of consecutive secondary cell groups and / or transformation execution conditions corresponding to candidate cells for primary cell transformation of consecutive secondary cell groups;

[0280] Optionally, this information may be combined with any one or more information in the first information and sent to the target node to assist the target node in performing MRO.

[0281] It should be noted that the candidate cell and / or the change execution condition corresponding to the candidate cell can be considered as the candidate cell and / or the change execution condition corresponding to the candidate cell initially configured before the primary cell of the continuous secondary cell group is changed.

[0282] D12, the candidate cells updated during the primary cell change of the continuous secondary cell group and / or the corresponding transformation execution conditions of the candidate cells updated during the primary cell change of the continuous secondary cell group;

[0283] Optionally, this information may be combined with any one or more information in the first information and sent to the target node to assist the target node in performing MRO.

[0284] D13, a configuration node for a transformation execution condition corresponding to a candidate cell for primary cell transformation of a continuous secondary cell group;

[0285] It should be noted that this information is used to indicate which nodes have configured the change execution conditions of the candidate cell. After the target node knows this information, it can continue to pass relevant information to the configuration node when it is not the configuration node, so as to assist in optimizing the change execution conditions.

[0286] Optionally, this information may be combined with any one or more information in the first information and sent to the target node to assist the target node in performing MRO.

[0287] D14, second indication information, where the second indication information is used to configure a primary cell change for a continuous secondary cell group when a secondary cell group failure or a random access failure occurs;

[0288] It should be noted that the indication of this information can enable the target node to clearly know that a secondary cell group failure or a random access failure has occurred during the continuous PSCell change process, so that MRO can be performed based on this information.

[0289] Optionally, this information may be combined with any one or more information in the first information and sent to the target node to assist the target node in performing MRO.

[0290] Optionally, usually when the first information does not include the first indication information, the second information may include the second indication information.

[0291] Optionally, in one implementation, the target node includes at least one of the following:

[0292] D21, a node that triggers the primary cell change of a continuous secondary cell group;

[0293] That is, sending the second information to the node that triggers the continuous PSCell transformation can enable the node to optimize the candidate cells and / or the execution conditions corresponding to the candidate cells, thereby improving the success rate of the continuous PSCell transformation of the terminal.

[0294] D22, a node that triggers updating of a candidate cell list of a primary cell of a secondary cell group during a primary cell change of a continuous secondary cell group;

[0295] That is, sending the second information to the node that triggers the update of the candidate cell list can enable the node to optimize the configured candidate cells, ensure that the configured candidate cells can meet the terminal usage requirements, and improve the success rate of continuous PSCell transformation of the terminal.

[0296] D23, a first auxiliary node, the first auxiliary node is the auxiliary node to which the terminal is connected before being transformed to the second auxiliary node, and the second auxiliary node is the auxiliary node to which the terminal has been connected and provides services for the terminal;

[0297] For example, the terminal initially accesses auxiliary node 1, and then successively accesses auxiliary node 2 and auxiliary node 3. Auxiliary node 3 is the node finally accessed by the terminal. In this case, the first auxiliary node refers to auxiliary node 2.

[0298] It should be noted that this situation refers to sending the second information to the auxiliary node connected before the terminal changes, so that the candidate cells and / or execution conditions corresponding to the candidate cells modified by the auxiliary node meet the terminal usage requirements and improve the success rate of continuous PSCell changes of the terminal.

[0299] D24, target node when auxiliary node transformation fails;

[0300] For example, the terminal initially accesses auxiliary node 1, and then successively switches to access auxiliary node 4 and auxiliary node 5. The terminal fails to switch to auxiliary node 5. In this case, the target node refers to auxiliary node 5.

[0301] It should be noted that this situation refers to sending the second information to the target node of the terminal change, so that the target node can adjust relevant parameters to reduce the terminal change access probability.

[0302] 2. The target action is continuous PCell switching

[0303] Optionally, in one implementation, the target node includes at least one of the following:

[0304] E11, a node that triggers primary cell switching of a continuous primary cell group;

[0305] That is, sending the second information to the node that triggers continuous PCell switching can enable the node to optimize the candidate cells and / or the execution conditions corresponding to the candidate cells, thereby improving the success rate of continuous PSCell transformation of the terminal.

[0306] E12, a node that triggers updating of a candidate cell list during a primary cell handover of a continuous primary cell group;

[0307] That is, sending the second information to the node that triggers the update of the candidate cell list can enable the node to optimize the configured candidate cells, ensure that the configured candidate cells can meet the terminal usage requirements and improve the success rate of continuous PSCell transformation of the terminal.

[0308] E13, the node where the target cell of the handover is located;

[0309] For example, the terminal initially connected to the master node 1, then switched to the master node 2, and then failed when switching to the master node 3. The master node 3 was the target node when the terminal failed to switch.

[0310] It should be noted that this situation refers to sending the second information to the target node of the terminal switching. Since the switching failure may be caused by unreasonable resource allocation of the target node, the target node can optimize resources and improve the switching success rate.

[0311] E14, the node where the source cell of the successful handover is located;

[0312] For example, the terminal initially accesses master node 1, and then switches to master node 4 and master node 5 in succession. Master node 5 is the node that the terminal finally accesses. In this case, the node where the source cell is located refers to master node 4.

[0313] It should be noted that this situation refers to sending the second information to the main node to which the terminal is connected before switching, so that the main node can configure appropriate candidate cells and / or execution conditions corresponding to the candidate cells, thereby improving the success rate of continuous PCell switching of the terminal.

[0314] Optionally, in an implementation manner, the sending the second information to the target node includes:

[0315] Sending a second target message to the target node, where the second target message carries the second information;

[0316] The second target message includes at least one of the following:

[0317] F11, SCG FAILURE INFORMATION REPORT message;

[0318] F12, secondary cell group failure transfer (SCG FAILURE TRANSFER) message;

[0319] It should be noted that the SCG FAILURE TRANSFER message can also be called a secondary cell group failure transmission message.

[0320] F13, other inter-network interface messages except the secondary cell group failure information report message and the secondary cell group failure transfer message;

[0321] Optionally, the above F11-F13 are mainly applicable to the case of continuous PSCell transformation, and the network device sends the second information to the target node. Optionally, other inter-network interface (XN) messages except the secondary cell group failure information report message and the secondary cell group failure transfer message can be newly added inter-network interface messages.

[0322] F14, FAILURE INDICATION message;

[0323] F15, handover report message;

[0324] F16, UPLINK RAN CONFIGURATION TRANSFER message;

[0325] F17, downlink radio access network element configuration transmission (DOWNLINK RAN CONFIGURATION TRANSFER) message;

[0326] F18. Other inter-network interface messages except failure indication message, handover report message, uplink radio access network element configuration transmission message and downlink radio access network element configuration transmission message.

[0327] Optionally, the above F14-F18 are mainly applicable to the case of continuous PCell switching, and the network device sends the second information to the target node. Optionally, other network interface messages other than the failure indication message, the switching report message, the uplink wireless access network element configuration transmission message and the downlink wireless access network element configuration transmission message can be newly added network interface messages.

[0328] The specific implementation of the embodiments of the present application is illustrated below with examples.

[0329] Application Scenario 1: Continuous PSCell Change Scenario Triggered by SN

[0330] The PSCell where the secondary node 1 (SN1) is located triggers a continuous PSCell change, first changing to the PSCell where the secondary node 2 (SN2) is located, and then the PSCell changes to the PSCell where the secondary node 3 (SN3) is located.

[0331] like Figure 3 As shown in the figure, the specific implementation process of scenario 1 includes:

[0332] Step 301: The primary cell where SN1 is located triggers continuous PSCell change and notifies the master node (MN).

[0333] Optionally, the message sent by SN1 includes a candidate cell list selected by SN1 and execution conditions corresponding to the candidate cells, and the candidate cell list includes cells under SN2 and SN3.

[0334] Step 302: MN exchanges candidate cell resources with SN2 and SN3 respectively;

[0335] Optionally, the MN sends a message to SN2 and SN3 where the candidate cells are located. SN2 and SN3 can make further selections within the PSCell candidate cell list recommended by SN1, and then preconfigure PSCell candidate cell resources and reply to the MN with a message carrying the preconfigured PSCell candidate cells.

[0336] Step 303: The MN configures the terminal to continuously change PSCells;

[0337] Optionally, the implementation process includes: the MN sends a radio resource control connection reconfiguration (RRCConnectionReconfiguration) message to the terminal, where the message includes a PSCell candidate cell list and execution conditions corresponding to the candidate cells.

[0338] The terminal returns a radio resource control connection reconfiguration complete (RRCConnectionReconfigurationComplete) message to the MN.

[0339] Step 304: The terminal evaluates the execution condition and selects the primary cell under SN2 for access;

[0340] Step 305: The terminal notifies the MN of the candidate cell selected by the terminal;

[0341] The terminal may notify the MN of the selected candidate cell via an RRCConnectionReconfigurationComplete message.

[0342] Step 306: MN notifies SN2 of the target cell that the terminal is to access;

[0343] The MN may inform SN2 of the target cell to be accessed by the terminal through a secondary node reconfiguration completion message.

[0344] Step 307: Perform random access and access SN2;

[0345] Step 308: SN2 triggers the modification process.

[0346] For example, the candidate cell list and / or the execution conditions corresponding to the candidate cells may be modified.

[0347] Optionally, the execution process includes: SN2 sends a modification request to MN, and after receiving the modification request, MN needs to notify SN3 to modify the pre-configured resources; SN3 sends the new pre-configured resources to MN, and MN sends them to the terminal via an RRCConnectionReconfiguration message, and the terminal feeds back an RRCConnectionReconfigurationComplete message to MN to confirm the pre-configured resources.

[0348] It should be noted that step 308 is an optional step.

[0349] Step 309: The terminal evaluates the execution condition and selects the primary cell under SN3 for access;

[0350] Step 310: The terminal notifies the MN of the candidate cell selected by the terminal;

[0351] Step 311: MN notifies SN3 of the target cell that the terminal wants to access;

[0352] Step 312: Perform random access and access SN3;

[0353] Step 313: After the terminal accesses SN3, an SCG failure occurs;

[0354] Step 314: The terminal sends an SCG Failure information message to the MN.

[0355] Step 315: MN notifies the failed SN3 and the SN2 before the transformation to perform configuration optimization.

[0356] like Figure 4 As shown in the figure, the specific implementation process of scenario 2 includes:

[0357] Step 401-step 411, same as step 301-step 311 of scenario 1;

[0358] Step 412: Execute random access, and access to SN3 fails;

[0359] Step 413, same as step 314;

[0360] Step 414: MN notifies SN2 before the transformation to perform configuration optimization.

[0361] It should be noted that in the above two scenarios, the reasons for the failure of SCG or random access to SN3 in SN3 may be at least one of the following:

[0362] There are problems with the candidate cells and / or execution conditions selected by H11 and SN1 in step 301 that are included in SN2 and SN3;

[0363] H12, MN may have modified the execution conditions of the candidate cell, that is, MN needs to be optimized;

[0364] H13 and SN2 modify the candidate cells and / or execution conditions included in SN3 in step 308 or step 408, that is, SN2 may need to be optimized;

[0365] H14. SN3 further selects a PSCell candidate cell within the range of the PSCell candidate cell list recommended by SN1 in step 302 or step 402. There is a problem with SN3's selection, that is, SN3 needs to be optimized. SN2 further selects a PSCell candidate cell within the range of the PSCell candidate cell list recommended by SN1 in step 302 or step 402. There is a problem with SN2's selection, that is, SN2 needs to be optimized.

[0366] Therefore, the current practice of only notifying SN2 and / or SN3, that is, step 315 or step 414, cannot meet the scenario of continuous PSCell change.

[0367] In order to solve the above problem, after the MN receives the SCG failure information message, according to the existing implementation, it first sends the SCG FAILURE INFORMATION REPORT message to the SN node that served last time ( Figure 1 The middle one is SN3, Figure 2 SN2 in the figure), it is also necessary to send messages to the following nodes, which may include:

[0368] H21. The previous SN of the UE's current serving SN. Figure 3 The middle one is SN2, Figure 4 The middle one is SN1;

[0369] When the H22 and SN conversion fails, it also needs to be sent to the target node. For example: Figure 4 Scenario: During the change process, the UE fails to access the PSCell under SN3 and needs to be sent to SN3;

[0370] H23, the node that triggers continuous PSCell transformation, Figure 3 and Figure 4 The middle one is SN1;

[0371] H24, during the continuous PSCell transformation process, the node that triggers the update of the PSCell candidate cell list, Figure 3 SN2 triggers the update in step 308, Figure 4 In the figure, SN2 triggers the update in step 408;

[0372] In order to send a message to the above node, the traditional SCG FAILURE INFORMATION REPORT message can be used, the SCG FAILURE TRANSFER message can be used, or a new message involving the XN interface can be added.

[0373] The above message is incomplete. The information sent by the MN to the SN needs to add at least one of the following items, which can be included in the existing SCG FAILURE INFORMATION REPORT message, or SCG FAILURE TRANSFER message, or other existing XN messages, or a new message:

[0374] H31, candidate cells for primary cell transformation of consecutive secondary cell groups and / or transformation execution conditions corresponding to candidate cells for primary cell transformation of consecutive secondary cell groups;

[0375] That is, when an SCG failure occurs, it is necessary to add the candidate PSCell cell list for continuous PSCell transformation currently configured and the corresponding execution conditions to the message.

[0376] by Figure 3 and 4 For example, it includes the PSCell candidate cell list configured under SN1, SN2, and SN3 and the execution conditions corresponding to the candidate cells.

[0377] H32. Transformation execution conditions corresponding to candidate cells updated during primary cell transformation of consecutive secondary cell groups and / or candidate cells updated during primary cell transformation of consecutive secondary cell groups;

[0378] H33, a configuration node for a transformation execution condition corresponding to a candidate cell for performing a primary cell transformation of a continuous secondary cell group;

[0379] It should be noted that here it is necessary to add a configuration node for the execution condition corresponding to each candidate PSCell cell list in the message, including MN and SN;

[0380] H34. Second indication information, where the second indication information is used to configure a primary cell change for a continuous secondary cell group when a secondary cell group failure or random access failure occurs.

[0381] In order to complete the above function of sending messages to the relevant SN, the MN needs to record relevant information. However, considering that the MN node may not know the specific information of the PSCell cell in the SN, the UE is also required to record and report at least one of the following contents, which can be included in the existing SCG failure information message, or RLF report, or successful handover report, or other existing reports, or new reports:

[0382] H41, cell identification information of the cell that triggers continuous PSCell change and / or identification information of the terminal in the cell that triggers continuous PSCell change;

[0383] H42, cell identification information of the first target cell accessed by the terminal during continuous PSCell change and / or identification information of the terminal in the first target cell;

[0384] Specifically, the first target cell meets: a cell accessed by the terminal after triggering continuous PSCell change; a cell that triggers modification of the candidate cell and / or modification of the execution condition corresponding to the candidate cell.

[0385] H43, cell identification information of the second target cell and / or identification information of the terminal in the second target cell;

[0386] Specifically, the second target cell is a cell accessed by the terminal during continuous PSCell change.

[0387] It should be noted that this application scenario is applicable not only to the continuous PSCell transformation scenario, but also to the scenario where the PSCell transformation of non-continuous transformation fails or fails soon after the PSCell transformation succeeds under the conditional PSCell transformation configured.

[0388] Application scenario 2: Continuous PSCell change scenario triggered by MN

[0389] It should be noted that this application scenario is similar to the first application scenario, except that the MN directly triggers the continuous PSCell change. That is, in this application scenario, Figure 3 Step 301 does not exist in Figure 4 There is no step 401 in the above method. In this case, the MN selects the candidate cell list and the execution conditions corresponding to the candidate cells. The other steps are the same as Figure 3 and Figure 4 .

[0390] After SCG failure or random access failure occurs in SN3, the cause of the failure may be at least one of the following:

[0391] J11. There are problems with the candidate cells selected by MN and included in SN2 and SN3 and / or the execution conditions corresponding to the candidate cells;

[0392] J12 and SN2 modify the candidate cells included in SN3 and / or the execution conditions corresponding to the candidate cells in step 308 or step 408, that is, SN2 may need to be optimized;

[0393] J13, SN3 further selects PSCell candidate cells within the PSCell candidate cell list recommended by MN in step 302 or step 402. There is a problem with SN3's selection, that is, SN3 needs to be optimized; SN2 further selects PSCell candidate cells within the PSCell candidate cell list recommended by MN in step 302 or step 402. There is a problem with SN2's selection, that is, SN2 needs to be optimized.

[0394] Therefore, the current practice of only notifying SN2 and SN3, that is, step 315 or step 414, cannot meet the scenario of continuous PSCell change.

[0395] In order to solve the above problem, after the MN receives the SCG failure information message, according to the existing implementation, it first sends the SCG FAILURE INFORMATION REPORT message to the SN node that served last time ( Figure 1 SN3 in the middle, Figure 2 SN2 in the figure), it is also necessary to send messages to the following nodes, which may include:

[0396] J21, the previous SN node of the UE's current serving SN node, Figure 3 The middle one is SN2 node, Figure 4 The middle one is SN1 node;

[0397] J22, when the node SN conversion fails, it also needs to be sent to the target node. For example: Figure 4 Scenario: During the change process, the UE fails to access the PSCell under SN3 and needs to be sent to SN3;

[0398] J23, the node that triggers continuous PSCell transformation, Figure 3 and Figure 4 The middle one is MN, so it does not need to be sent.

[0399] J24. During the continuous PSCell transformation process, the node that triggers the update of the PSCell candidate cell list, Figure 3 SN2 triggers the update in step 308, Figure 4 In the figure, SN2 triggers the update in step 408;

[0400] In order to send a message to the above node, the traditional SCG FAILURE INFORMATION REPORT message can be used, the SCG FAILURE TRANSFER message can be used, or a new message involving the XN interface can be added.

[0401] The above message is incomplete. The information sent by the MN to the SN needs to add at least one of the following items, which can be included in the existing SCG FAILURE INFORMATION REPORT message, or SCG FAILURE TRANSFER message, or other existing XN messages, or a new message:

[0402] J31. candidate cells for primary cell transformation of consecutive secondary cell groups and / or transformation execution conditions corresponding to candidate cells for primary cell transformation of consecutive secondary cell groups;

[0403] That is, when an SCG failure occurs, the currently configured candidate PSCell cell list for continuous PSCell transformation and the corresponding execution conditions need to be added to the message. Figure 3 and 4 For example, it includes the PSCell candidate cell list configured under SN1, SN2, and SN3 and the corresponding execution conditions.

[0404] J32. Transformation execution conditions corresponding to candidate cells updated during transformation of primary cells of consecutive secondary cell groups and / or candidate cells updated during transformation of primary cells of consecutive secondary cell groups;

[0405] J33, a configuration node for a transformation execution condition corresponding to a candidate cell for primary cell transformation of a continuous secondary cell group;

[0406] It should be noted that since it is triggered by MN, the execution conditions are all configured by MN;

[0407] J34. Second indication information, where the second indication information is used to configure the primary cell change of a continuous secondary cell group when a secondary cell group failure or random access failure occurs.

[0408] In order to complete the above function of sending messages to the relevant SN, the MN needs to record relevant information. However, considering that the MN node may not know the specific information of the PSCell cell in the SN node, the UE is also required to record and report at least one of the following contents, which can be included in the existing SCG failure information message, or RLF report, or successful handover report, or other existing reports, or new reports:

[0409] J41, the cell identification information that triggers continuous PSCell change, which is the cell identification information under the MN at this time;

[0410] J42, cell identification information of the first target cell accessed by the terminal during continuous PSCell change;

[0411] Specifically, the first target cell satisfies: a cell to which the terminal accesses after the target action is triggered; and a cell that triggers modification of the candidate cell and / or modification of the execution condition corresponding to the candidate cell.

[0412] J43, cell identification information of the second target cell;

[0413] Specifically, the second target cell is a cell accessed by the terminal during the target action;

[0414] It should be noted that this application scenario is applicable not only to the continuous PSCell transformation scenario, but also to the scenario where the PSCell transformation of non-continuous transformation fails or fails soon after the PSCell transformation succeeds under the conditional PSCell transformation configured.

[0415] Application scenario 3: Continuous PCell switching scenario

[0416] The cell where the source base station is located triggers a continuous handover, first switching to the cell under candidate base station 1, and then switching to the cell under candidate base station 2.

[0417] like Figure 5 As shown in the figure, the specific implementation process of scenario 1 includes:

[0418] Step 501: The source base station exchanges candidate cell resources with candidate base station 1 and candidate base station 2 respectively;

[0419] The optional implementation process includes: the source base station sends a message to candidate base station 1 and candidate base station 2, candidate base station 1 and candidate base station 2 can receive or reject the PCell candidate cell recommended by the source base station, and reply to the source base station with a message. If the candidate cell selected by the source base station is accepted, the pre-configured candidate PCell cell configuration is carried. If the source base station selects multiple candidate cells in candidate base station 1 or candidate base station 2, it may be necessary to send a message to candidate base station 1 or candidate base station 2 for each candidate cell, and candidate base station 1 or candidate base station 2 also replies with multiple messages to reply to each candidate cell.

[0420] Step 502: The source base station configures the terminal to switch to PCell continuously;

[0421] Optionally, the implementation process includes: the source base station sends an RRCConnectionReconfiguration message to the terminal, the message including a PSCell candidate cell list and execution conditions corresponding to the candidate cells. The terminal returns an RRCConnectionReconfigurationComplete message to the source base station.

[0422] Step 503: The terminal evaluates the execution condition and selects the primary cell under the candidate base station 1 for access;

[0423] Step 504: Perform random access to connect to the primary cell of candidate base station 1;

[0424] Step 505: The primary cell under candidate base station 1 triggers a modification process.

[0425] For example, the candidate cell list and / or the execution conditions corresponding to the candidate cells may be modified.

[0426] Optionally, the execution process includes: candidate base station 1 sends a switching request to candidate base station 2, candidate base station 2 receives the switching request from candidate base station 1, returns the modified pre-configured resources to candidate base station 1, and candidate base station 1 notifies the terminal of the latest pre-configured resources.

[0427] It should be noted that step 505 is an optional step.

[0428] Step 506: The terminal evaluates the execution condition and selects the primary cell under the candidate base station 2 for random access;

[0429] Step 507: Random access to the primary cell of candidate base station 2 is successful.

[0430] Step 508: The terminal generates an RLF report when an RLF occurs under candidate base station 2.

[0431] Step 509: After the network obtains the RLF report, it sends it to the node where the serving cell before the failure is located, that is, candidate base station 2.

[0432] like Figure 6 As shown in the figure, the specific implementation process of scenario 2 includes:

[0433] Step 601-step 606, same as step 501-step 506 in scenario 1;

[0434] Step 607: Failure in executing random access to the primary cell of candidate base station 2;

[0435] Step 608: The terminal generates an RLF report;

[0436] Step 609: After the network obtains the RLF report, it sends it to the node where the source cell where the handover failed is located, that is, candidate base station 1.

[0437] It should be noted that in the above two scenarios, the cause of RLF or handover failure may be at least one of the following:

[0438] K11. There are problems with the candidate cells and / or execution conditions corresponding to the candidate cells selected by the source base station in steps 501 and 601 and included in candidate base station 1 and candidate base station 2;

[0439] K12, candidate base station 1 accepts or rejects the PCell candidate cell selected by the source base station in steps 501 and 601, and there is a problem with the selection of candidate base station 1, for example: the source base station has selected a suitable target cell to send to candidate base station 1, but candidate base station 1 rejects it, that is, candidate base station 1 needs to be optimized; candidate base station 2 accepts or rejects the PCell candidate cell selected by the source base station in step 1, and there is a problem with the selection of candidate base station 2, that is, candidate base station 2 needs to be optimized

[0440] K13, candidate base station 1 modifies the candidate cells included in candidate base station 2 and / or the execution conditions corresponding to the candidate cells in step 505 or 605, that is, candidate base station 1 may need to be optimized;

[0441] Therefore, the current method of only notifying candidate base station 1 or candidate base station 2 cannot meet the scenario of continuous PCell switching.

[0442] In order to solve the above problem, after the network receives the RLF report, according to the existing implementation, a FAILUREINDICATION message is first sent to the failed node ( Figure 5 is candidate base station 2, Figure 6In the example, the message is sent to the candidate base station 1), and the message also needs to be sent to the following nodes, which may include:

[0443] K21, when the handover fails, needs to be sent to the node where the target cell is located, that is, Figure 6 Candidate base station 2 node in;

[0444] K22, the node that triggers continuous switching, Figure 5 and 6 The middle is the source base station node;

[0445] K23. During the continuous handover process, a node triggers the update of the handover candidate cell list. Figure 5 In step 505, candidate base station 1 triggers the update. Figure 6 In step 605, candidate base station 1 triggers the update;

[0446] K24, in the scenario where the switch fails soon after it succeeds ( Figure 5 In the middle scenario), it also needs to be sent to the node where the source cell of the successful handover is located, that is, to candidate base station 1;

[0447] In order to send messages to the above nodes, the traditional FAILURE INDICATION message can be used, or the handover report message, or the UPLINK RAN CONFIGURATION TRANSFER or DOWNLINK RANCONFIGURATION TRANSFER message or a new message involving the XN or NG interface can be used.

[0448] After receiving the above message, the network node needs the information related to the continuous handover when using the RLF report to analyze the failure cause. In order to obtain the information related to the continuous handover, a joint solution of the network side and the UE side or a solution completely on the UE side can be adopted.

[0449] The complete UE-side solution is to enhance the RLF report related content, including continuous handover related information, and needs to add at least one of the following contents to the RLF report or the newly added report:

[0450] K31. Cell identification information of the cell that triggers continuous PCell switching and / or identification information of the terminal in the cell that triggers continuous PCell switching;

[0451] For example, Figure 5 and 6 The cell identifier of the source base station and the UE identifier information in the cell.

[0452] K32, cell identification information of the first target cell accessed by the terminal during continuous PCell switching and / or identification information of the terminal in the first target cell;

[0453] Specifically, the first target cell satisfies: a cell accessed by the terminal after triggering continuous PCell switching; a cell that triggers modification of the candidate cell and / or modification of the execution condition corresponding to the candidate cell;

[0454] K33. The candidate cell list and / or execution conditions corresponding to the candidate cells updated during the continuous PCell switching process.

[0455] K34. cell identification information of the second target cell and / or identification information of the terminal in the second target cell;

[0456] Specifically, the second target cell is a cell accessed by the terminal during continuous PCell switching.

[0457] K35. First indication information, where the first indication information is used to indicate that there is a random access failure or a wireless link failure during continuous PCell switching.

[0458] The solution jointly adopted by the network and the UE is that the network records the context information of the continuously switched terminals, and the terminal records the index information in the RLF report or other reports for searching in the network. That is, at least one of the following contents needs to be added to the RLF report or the newly added report:

[0459] K41. Cell identification information of the cell that triggers continuous PCell switching and / or identification information of the terminal in the cell that triggers continuous PCell switching;

[0460] For example, Figure 5 and 6 The cell identifier of the source base station and the UE identifier information in the cell;

[0461] K42, cell identification information of the first target cell accessed by the terminal during continuous PCell switching and / or identification information of the terminal in the first target cell;

[0462] Specifically, the first target cell satisfies: a cell accessed by the terminal after triggering continuous PCell switching; a cell that triggers modification of the candidate cell and / or modification of the execution condition corresponding to the candidate cell;

[0463] K43. cell identification information of the second target cell and / or identification information of the terminal in the second target cell;

[0464] Specifically, the second target cell is a cell accessed by the terminal during continuous PCell switching.

[0465] After receiving the RLF report or the newly added report with the above content, the network can find the latest candidate cell list and / or corresponding execution conditions saved by the network in the network side node according to the cell identity and the identity information of the UE.

[0466] Therefore, the solution using the joint network side and UE side needs to transmit the candidate cell list and / or the corresponding execution conditions between network nodes, which may involve the XN or NG interface, and the inter-node messages involved may include at least one of the FAILUREINDICATION message, the handover report message, the UPLINK RAN CONFIGURATION TRANSFER message, the DOWNLINK RAN CONFIGURATION TRANSFER message and the newly added message. In order to obtain the candidate cell list and / or the corresponding execution conditions saved by other nodes, the sending node includes the cell identification information of the target node and / or the identification information of the terminal in the cell in the above information, and the target node finds the saved candidate cell list and / or the corresponding execution conditions according to the identification information, and then sends it back to the acquisition node in the above message.

[0467] It should be noted that this application scenario is not only applicable to continuous switching scenarios, but also to scenarios where a single switching fails or fails soon after a successful switching when conditional switching is configured.

[0468] It should be noted that the information transmission method in the continuous PSCell transformation and continuous PCell switching scenarios provided in the embodiments of the present application can improve the success rate of continuous PCell switching and continuous PSCell transformation of the terminal and improve network performance indicators.

[0469] The technical solution provided in the embodiment of the present application can be applicable to a variety of systems, especially 5G systems. For example, the applicable system can be a global system of mobile communication (GSM) system, a code division multiple access (CDMA) system, a wideband code division multiple access (WCDMA) general packet radio service (GPRS) system, a long term evolution (LTE) system, a LTE frequency division duplex (FDD) system, a LTE time division duplex (TDD) system, an advanced long term evolution (LTE-A) system, a universal mobile telecommunication system (UMTS), a world-wide interoperability for microwave access (WiMAX) system, a 5G new radio (NR) system, etc. These various systems include terminals (also referred to as terminal equipment) and network equipment. The system may also include a core network part, such as an evolved packet system (EPS), a 5G system (5GS), etc.

[0470] The terminal involved in the embodiment of the present application may also be referred to as a terminal device, which 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. In different systems, the name of the terminal device may also be different. For example, in a 5G system, the terminal device may be referred to as a user equipment (UE). A wireless terminal device may communicate with one or more core networks (CN) via a radio access network (RAN). The wireless terminal device may be a mobile terminal device, such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device. For example, it may be a portable, pocket-sized, handheld, computer-built-in or vehicle-mounted mobile device that exchanges language and / or data with a wireless access network. For example, personal communication service (PCS) phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs) and other devices. The wireless terminal device may also be referred to as a system, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, an access point, a remote terminal device, an access terminal device, a user terminal device, a user agent, and a user device, but is not limited in the embodiments of the present application.

[0471] The network device involved in the embodiment of the present application may be a base station, which may include multiple cells providing services for the terminal. Depending on the specific application scenario, the base station may also be called an access point, or may be a device in the access network that communicates with the wireless terminal device through one or more sectors on the air interface, or other names. The network device may be used to interchange received air frames with Internet Protocol (IP) packets, and serve as a router between the wireless terminal device and the rest of the access network, wherein the rest of the access network may include an Internet Protocol (IP) communication network. The network device may also coordinate the attribute management of the air interface. For example, the network device involved in the embodiments of the present application may be a network device (Base Transceiver Station, BTS) in the Global System for Mobile communications (Global System for Mobile communications, GSM) or Code Division Multiple Access (Code Division Multiple Access, CDMA), or a network device (NodeB) in Wide-band Code Division Multiple Access (WCDMA), or an evolutionary network device (evolutional Node B, eNB or e-NodeB) in the long term evolution (long term evolution, LTE) system, a 5G base station (gNB) in the 5G network architecture (next generation system), or a home evolved Node B (Home evolved Node B, HeNB), a relay terminal node (relay node), a home base station (femto), a pico base station (pico), etc., which is not limited in the embodiments of the present application. In some network structures, the network device may include a centralized unit (CU) node and a distributed unit (DU) node, and the centralized unit and the distributed unit may also be arranged geographically separately.

[0472] Network devices and terminal devices can each use one or more antennas for multiple-input multiple-output (MIMO) transmission. MIMO transmission can be single-user MIMO (SU-MIMO) or multi-user MIMO (MU-MIMO). Depending on the form and number of antenna combinations, MIMO transmission can be 2D-MIMO, 3D-MIMO, FD-MIMO or massive-MIMO, or it can be diversity transmission, precoded transmission or beamforming transmission, etc.

[0473] like Figure 7 As shown, an embodiment of the present application provides an information transmission method, which is executed by a terminal and includes:

[0474] Step S701, sending first information to a network device, where the first information is used by the network side to perform mobility robustness optimization MRO related to a target action;

[0475] Wherein, the first information is used to indicate relevant information of the target action;

[0476] The target actions include:

[0477] a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or

[0478] The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

[0479] Optionally, the first information includes at least one of the following:

[0480] Cell identification information, where the cell indicated by the cell identification information is the cell that triggers the target action;

[0481] The identification information of the terminal in the cell that triggers the target action;

[0482] The cell identification information of the first target cell accessed by the terminal during the target action, wherein the first target cell satisfies: the cell accessed by the terminal after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell;

[0483] identification information of the terminal in the first target cell accessed during the process of executing the target action;

[0484] first indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action;

[0485] cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action;

[0486] identification information of the terminal in the second target cell;

[0487] A list of candidate cells and / or execution conditions corresponding to the candidate cells updated during the target action;

[0488] The candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action.

[0489] Optionally, sending the first information to the network device includes:

[0490] Sending a first target message to the network device, where the first target message carries the first information;

[0491] The first target message includes at least one of the following:

[0492] Secondary cell group failure message;

[0493] Radio link failure report;

[0494] Successful switching report;

[0495] Other reports except radio link failure report and successful handover report.

[0496] It should be noted that all implementation methods in the above embodiments are applicable to the embodiments of the information transmission method applied to the terminal side, and can achieve the same technical effect, which will not be repeated here.

[0497] like Figure 8 As shown, the embodiment of the present application provides an information transmission device 800, which is applied to a network device, including:

[0498] A receiving unit 801 is configured to receive first information sent by a terminal, where the first information is used to assist a network side in performing a mobility robustness optimization MRO associated with a target action;

[0499] Wherein, the first information is used to indicate relevant information of the target action;

[0500] The target actions include:

[0501] a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or

[0502] The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

[0503] Optionally, the first information includes at least one of the following:

[0504] Cell identification information, where the cell indicated by the cell identification information is the cell that triggers the target action;

[0505] The identification information of the terminal in the cell that triggers the target action;

[0506] The cell identification information of the first target cell accessed by the terminal during the target action, wherein the first target cell satisfies: the cell accessed by the terminal after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell;

[0507] identification information of the terminal in the first target cell accessed during the process of executing the target action;

[0508] first indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action;

[0509] cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action;

[0510] identification information of the terminal in the second target cell;

[0511] A list of candidate cells and / or execution conditions corresponding to the candidate cells updated during the target action;

[0512] The candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action.

[0513] Optionally, the first information sent by the receiving terminal includes:

[0514] receiving a first target message sent by the terminal, where the first target message carries the first information;

[0515] The first target message includes at least one of the following:

[0516] Secondary cell group failure message;

[0517] Radio link failure report;

[0518] Successful switching report;

[0519] Other reports except radio link failure report and successful handover report.

[0520] Optionally, the device further comprises:

[0521] The second sending unit is used to send second information to the target node, where the second information includes the first information, and the second information is used for the target node to perform MRO.

[0522] Optionally, the second sending unit is used to:

[0523] Sending a second target message to the target node, where the second target message carries the second information;

[0524] The second target message includes at least one of the following:

[0525] Secondary cell group failure information report message;

[0526] Secondary cell group failure transfer message;

[0527] Other inter-network interface messages except the secondary cell group failure information report message and the secondary cell group failure transfer message;

[0528] Failure indication message;

[0529] Switch report message;

[0530] Uplink wireless access network element configuration transmission message;

[0531] Downlink wireless access network element configuration transmission message;

[0532] Other inter-network interface messages except failure indication message, handover report message, uplink radio access network element configuration transmission message and downlink radio access network element configuration transmission message.

[0533] Optionally, when the target action is a primary cell change of a continuous secondary cell group, the target node includes at least one of the following:

[0534] A node that triggers a primary cell change of a continuous secondary cell group;

[0535] A node that triggers updating of a candidate cell list of a primary cell of a secondary cell group during a primary cell change of a continuous secondary cell group;

[0536] a first auxiliary node, the first auxiliary node being the auxiliary node to which the terminal is connected before being transformed to the second auxiliary node, and the second auxiliary node being the auxiliary node to which the terminal has been connected and which provides services for the terminal;

[0537] The target node when the auxiliary node transformation fails.

[0538] Optionally, when the target action is primary cell switching of a continuous primary cell group, the target node includes at least one of the following:

[0539] A node that triggers primary cell switching of a continuous primary cell group;

[0540] A node that triggers an update of a candidate cell list during a primary cell handover of a continuous primary cell group;

[0541] The node where the target cell of the handover is located;

[0542] The node where the source cell of the successful handover is located.

[0543] Optionally, when the target action is a primary cell change of a continuous secondary cell group, the second information further includes at least one of the following:

[0544] Candidate cells for primary cell transformation of consecutive secondary cell groups and / or transformation execution conditions corresponding to candidate cells for primary cell transformation of consecutive secondary cell groups;

[0545] The candidate cells updated during the primary cell change process of the consecutive secondary cell group and / or the change execution conditions corresponding to the candidate cells updated during the primary cell change process of the consecutive secondary cell group;

[0546] A configuration node for a change execution condition corresponding to a candidate cell for performing a primary cell change of a continuous secondary cell group;

[0547] The second indication information is used for configuring a primary cell change of a continuous secondary cell group when a secondary cell group failure or a random access failure occurs.

[0548] It should be noted that the device embodiment is a device that corresponds one-to-one to the above-mentioned method embodiment. All implementation methods in the above-mentioned method embodiment are applicable to the device embodiment and can achieve the same technical effect.

[0549] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0550] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0551] like Fig. 9 As shown, the embodiment of the present application further provides a network device, including a processor 900, a transceiver 910, a memory 920, and a program stored in the memory 920 and executable on the processor 900; wherein the transceiver 910 is connected to the processor 900 and the memory 920 through a bus interface, wherein the processor 900 is used to read the program in the memory and execute the following process:

[0552] Receiving, by a transceiver, first information sent by a terminal, where the first information is used to assist a network side in performing a mobility robustness optimization MRO associated with a target action;

[0553] Wherein, the first information is used to indicate relevant information of the target action;

[0554] The target actions include:

[0555] a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or

[0556] The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

[0557] The transceiver 910 is configured to receive and send data under the control of the processor 900 .

[0558] Among them, Fig. 9 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically linking together various circuits of one or more processors represented by processor 900 and memory represented by memory 920. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 910 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, including transmission media such as wireless channels, wired channels, optical cables, and the like.

[0559] The processor 900 is responsible for managing the bus architecture and general processing, and the memory 920 can store data used by the processor 900 when performing operations.

[0560] Optionally, the processor 900 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0561] The processor calls the computer program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0562] Optionally, the first information includes at least one of the following:

[0563] Cell identification information, where the cell indicated by the cell identification information is the cell that triggers the target action;

[0564] The identification information of the terminal in the cell that triggers the target action;

[0565] The cell identification information of the first target cell accessed by the terminal during the target action, wherein the first target cell satisfies: the cell accessed by the terminal after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell;

[0566] identification information of the terminal in the first target cell accessed during the process of executing the target action;

[0567] first indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action;

[0568] cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action;

[0569] identification information of the terminal in the second target cell;

[0570] A list of candidate cells and / or execution conditions corresponding to the candidate cells updated during the target action;

[0571] The candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action.

[0572] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0573] receiving, by a transceiver, a first target message sent by the terminal, wherein the first target message carries the first information;

[0574] The first target message includes at least one of the following:

[0575] Secondary cell group failure message;

[0576] Radio link failure report;

[0577] Successful switching report;

[0578] Other reports except radio link failure report and successful handover report.

[0579] Optionally, the processor, for reading the computer program in the memory, further performs the following operations:

[0580] The second information is sent to the target node through the transceiver, where the second information includes the first information, and the second information is used for the target node to perform MRO.

[0581] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0582] Sending a second target message to the target node through a transceiver, wherein the second target message carries the second information;

[0583] The second target message includes at least one of the following:

[0584] Secondary cell group failure information report message;

[0585] Secondary cell group failure transfer message;

[0586] Other inter-network interface messages except the secondary cell group failure information report message and the secondary cell group failure transfer message;

[0587] Failure indication message;

[0588] Switch report message;

[0589] Uplink wireless access network element configuration transmission message;

[0590] Downlink wireless access network element configuration transmission message;

[0591] Other inter-network interface messages except failure indication message, handover report message, uplink radio access network element configuration transmission message and downlink radio access network element configuration transmission message.

[0592] Optionally, when the target action is a primary cell change of a continuous secondary cell group, the target node includes at least one of the following:

[0593] A node that triggers a primary cell change of a continuous secondary cell group;

[0594] A node that triggers updating of a candidate cell list of a primary cell of a secondary cell group during a primary cell change of a continuous secondary cell group;

[0595] a first auxiliary node, the first auxiliary node being the auxiliary node to which the terminal is connected before being transformed to the second auxiliary node, and the second auxiliary node being the auxiliary node to which the terminal has been connected and which provides services for the terminal;

[0596] The target node when the auxiliary node transformation fails.

[0597] Optionally, when the target action is primary cell switching of a continuous primary cell group, the target node includes at least one of the following:

[0598] A node that triggers primary cell switching of a continuous primary cell group;

[0599] A node that triggers an update of a candidate cell list during a primary cell handover of a continuous primary cell group;

[0600] The node where the target cell of the handover is located;

[0601] The node where the source cell of the successful handover is located.

[0602] Optionally, when the target action is a primary cell change of a continuous secondary cell group, the second information further includes at least one of the following:

[0603] Candidate cells for primary cell transformation of consecutive secondary cell groups and / or transformation execution conditions corresponding to candidate cells for primary cell transformation of consecutive secondary cell groups;

[0604] The candidate cells updated during the primary cell change process of the consecutive secondary cell group and / or the change execution conditions corresponding to the candidate cells updated during the primary cell change process of the consecutive secondary cell group;

[0605] A configuration node for a change execution condition corresponding to a candidate cell for performing a primary cell change of a continuous secondary cell group;

[0606] The second indication information is used for configuring a primary cell change of a continuous secondary cell group when a secondary cell group failure or a random access failure occurs.

[0607] It should be noted here that the above-mentioned network device provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as the method embodiment in this embodiment will not be described in detail here.

[0608] The embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the information transmission method applied to a network device. The processor-readable storage medium may be any available medium or data storage device that the processor can access, including but not limited to magnetic storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor storage (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.

[0609] like Fig.10 As shown, the embodiment of the present application provides an information transmission device 1000, which is applied to a terminal, including:

[0610] A first sending unit 1001 is used to send first information to a network device, where the first information is used by the network side to perform mobility robustness optimization MRO related to a target action;

[0611] Wherein, the first information is used to indicate relevant information of the target action;

[0612] The target actions include:

[0613] a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or

[0614] The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

[0615] Optionally, the first information includes at least one of the following:

[0616] Cell identification information, where the cell indicated by the cell identification information is the cell that triggers the target action;

[0617] The identification information of the terminal in the cell that triggers the target action;

[0618] The cell identification information of the first target cell accessed by the terminal during the target action, wherein the first target cell satisfies: the cell accessed by the terminal after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell;

[0619] identification information of the terminal in the first target cell accessed during the process of executing the target action;

[0620] first indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action;

[0621] cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action;

[0622] identification information of the terminal in the second target cell;

[0623] A list of candidate cells and / or execution conditions corresponding to the candidate cells updated during the target action;

[0624] The candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action.

[0625] Optionally, sending the first information to the network device includes:

[0626] Sending a first target message to the network device, where the first target message carries the first information;

[0627] The first target message includes at least one of the following:

[0628] Secondary cell group failure message;

[0629] Radio link failure report;

[0630] Successful switching report;

[0631] Other reports except radio link failure report and successful handover report.

[0632] It should be noted that the device embodiment is a device that corresponds one-to-one to the above-mentioned method embodiment. All implementation methods in the above-mentioned method embodiment are applicable to the device embodiment and can achieve the same technical effect.

[0633] It should be noted that the division of units in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, each functional unit in each embodiment of the present application may be integrated into a processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of software functional units.

[0634] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a processor-readable storage medium. Based on this understanding, the technical solution of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, server, or network device, etc.) or a processor (processor) to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0635] like Fig.11 As shown, the embodiment of the present application further provides a terminal, including a processor 1100, a transceiver 1110, a memory 1120, and a program stored in the memory 1120 and executable on the processor 1100; wherein the transceiver 1110 is connected to the processor 1100 and the memory 1120 through a bus interface, wherein the processor 1100 is used to read the program in the memory and execute the following process:

[0636] Sending first information to a network device, where the first information is used by the network side to perform mobility robustness optimization (MRO) related to a target action;

[0637] Wherein, the first information is used to indicate relevant information of the target action;

[0638] The target actions include:

[0639] a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or

[0640] The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

[0641] The transceiver 1110 is configured to receive and send data under the control of the processor 1100 .

[0642] Among them, Fig.11 In the embodiment, the bus architecture may include any number of interconnected buses and bridges, specifically one or more processors represented by processor 1100 and various circuits of memory represented by memory 1120 are linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and are therefore not further described herein. The bus interface provides an interface. The transceiver 1110 may be a plurality of components, namely, a transmitter and a receiver, providing a unit for communicating with various other devices on a transmission medium, including wireless channels, wired channels, optical cables, and other transmission media. For different user devices, the user interface 1130 may also be an interface capable of externally and internally connecting required devices, and the connected devices include but are not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.

[0643] The processor 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 when performing operations.

[0644] Optionally, the processor 1100 may be a CPU (central processing unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array) or a CPLD (Complex Programmable Logic Device), and the processor may also adopt a multi-core architecture.

[0645] The processor calls the computer program stored in the memory to execute any of the methods provided in the embodiments of the present application according to the obtained executable instructions. The processor and the memory can also be arranged physically separately.

[0646] Optionally, the first information includes at least one of the following:

[0647] Cell identification information, where the cell indicated by the cell identification information is the cell that triggers the target action;

[0648] The identification information of the terminal in the cell that triggers the target action;

[0649] The cell identification information of the first target cell accessed by the terminal during the target action, wherein the first target cell satisfies: the cell accessed by the terminal after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell;

[0650] identification information of the terminal in the first target cell accessed during the process of executing the target action;

[0651] first indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action;

[0652] cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action;

[0653] identification information of the terminal in the second target cell;

[0654] A list of candidate cells and / or execution conditions corresponding to the candidate cells updated during the target action;

[0655] The candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action.

[0656] Optionally, the processor is configured to read the computer program in the memory and perform the following operations:

[0657] Sending a first target message to the network device through a transceiver, wherein the first target message carries the first information;

[0658] The first target message includes at least one of the following:

[0659] Secondary cell group failure message;

[0660] Radio link failure report;

[0661] Successful switching report;

[0662] Other reports except radio link failure report and successful handover report.

[0663] It should be noted here that the above-mentioned terminal provided in the embodiment of the present application can implement all the method steps implemented in the above-mentioned method embodiment, and can achieve the same technical effect. The parts and beneficial effects that are the same as those in the method embodiment will not be described in detail here.

[0664] The embodiment of the present application also provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the steps of the information transmission method applied to a terminal. The processor-readable storage medium may be any available medium or data storage device that the processor can access, including but not limited to magnetic storage (e.g., floppy disk, hard disk, magnetic tape, magneto-optical disk (MO), etc.), optical storage (e.g., CD, DVD, BD, HVD, etc.), and semiconductor storage (e.g., ROM, EPROM, EEPROM, non-volatile memory (NAND FLASH), solid-state drive (SSD)), etc.

[0665] Those skilled in the art will appreciate that the embodiments of the present application may be provided as methods, systems, or computer program products. Therefore, the present application may adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application may adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to disk storage and optical storage, etc.) that contain computer-usable program code.

[0666] The present application is described with reference to the flowcharts and / or block diagrams of the methods, devices (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer executable instructions. These computer executable instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to generate a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the processes in the flowchart and / or block diagram. Figure 1 A process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0667] These processor executable instructions may also be stored in a processor readable memory that can direct a computer or other programmable data processing device to operate in a specific manner, so that the instructions stored in the processor readable memory produce an article of manufacture including an instruction device, which implements the process Figure 1 A process or multiple processes and / or boxes Figure 1 A function specified in one or more boxes.

[0668] These processor-executable instructions may also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable device to implement the process. Figure 1 A process or multiple processes and / or boxes Figure 1 The steps for the functions specified in one or more boxes.

[0669] Obviously, those skilled in the art can make various changes and modifications to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. An information transmission method, characterized in that: Performed by network devices, including: receiving first information sent by a terminal, where the first information is used to assist a network side in performing a mobility robustness optimization MRO associated with a target action; Wherein, the first information is used to indicate relevant information of the target action; The target actions include: a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

2. The method according to claim 1, characterized in that The first information includes at least one of the following: Cell identification information, where the cell indicated by the cell identification information is the cell that triggers the target action; The identification information of the terminal in the cell that triggers the target action; The cell identification information of the first target cell accessed by the terminal during the target action, wherein the first target cell satisfies: the cell accessed by the terminal after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell; identification information of the terminal in the first target cell accessed during the process of executing the target action; first indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action; cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action; identification information of the terminal in the second target cell; A list of candidate cells and / or execution conditions corresponding to the candidate cells updated during the target action; The candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action.

3. The method according to claim 1, characterized in that The first information sent by the receiving terminal includes: receiving a first target message sent by the terminal, where the first target message carries the first information; The first target message includes at least one of the following: Secondary cell group failure message; Radio link failure report; Successful switching report; Other reports except radio link failure report and successful handover report.

4. The method according to any one of claims 1 to 3, characterized in that: Also includes: Sending second information to the target node, where the second information includes the first information, and the second information is used for the target node to perform MRO.

5. The method according to claim 4, characterized in that The sending the second information to the target node includes: Sending a second target message to the target node, where the second target message carries the second information; The second target message includes at least one of the following: Secondary cell group failure information report message; Secondary cell group failure transfer message; Other inter-network interface messages except the secondary cell group failure information report message and the secondary cell group failure transfer message; Failure indication message; Switch report message; Uplink wireless access network element configuration transmission message; Downlink wireless access network element configuration transmission message; Other inter-network interface messages except failure indication message, handover report message, uplink radio access network element configuration transmission message and downlink radio access network element configuration transmission message.

6. The method according to claim 4, characterized in that In the case where the target action is a primary cell change of a continuous secondary cell group, the target node includes at least one of the following: A node that triggers a primary cell change of a continuous secondary cell group; A node that triggers updating of a candidate cell list of a primary cell of a secondary cell group during a primary cell change of a continuous secondary cell group; a first auxiliary node, the first auxiliary node being the auxiliary node to which the terminal is connected before being transformed to the second auxiliary node, and the second auxiliary node being the auxiliary node to which the terminal has been connected and which provides services for the terminal; The target node when the auxiliary node transformation fails.

7. The method according to claim 4, characterized in that In the case where the target action is a primary cell switching of a continuous primary cell group, the target node includes at least one of the following: A node that triggers primary cell switching of a continuous primary cell group; A node that triggers an update of a candidate cell list during a primary cell handover of a continuous primary cell group; The node where the target cell of the handover is located; The node where the source cell of the successful handover is located.

8. The method according to claim 4, characterized in that When the target action is a primary cell change of a continuous secondary cell group, the second information further includes at least one of the following: Candidate cells for primary cell transformation of consecutive secondary cell groups and / or transformation execution conditions corresponding to candidate cells for primary cell transformation of consecutive secondary cell groups; The candidate cells updated during the primary cell change process of the continuous secondary cell group and / or the change execution conditions corresponding to the candidate cells updated during the primary cell change process of the continuous secondary cell group; A configuration node for a change execution condition corresponding to a candidate cell for performing a primary cell change of a continuous secondary cell group; The second indication information is used for configuring a primary cell change of a continuous secondary cell group when a secondary cell group failure or a random access failure occurs.

9. An information transmission method, characterized in that: Executed by the terminal, including: Sending first information to a network device, where the first information is used by the network side to perform mobility robustness optimization (MRO) related to a target action; Wherein, the first information is used to indicate relevant information of the target action; The target actions include: a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

10. The method according to claim 9, characterized in that The first information includes at least one of the following: Cell identification information, where the cell indicated by the cell identification information is the cell that triggers the target action; The identification information of the terminal in the cell that triggers the target action; The cell identification information of the first target cell accessed by the terminal during the target action, wherein the first target cell satisfies: the cell accessed by the terminal after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell; identification information of the terminal in the first target cell accessed during the process of executing the target action; first indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action; cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action; identification information of the terminal in the second target cell; A list of candidate cells and / or execution conditions corresponding to the candidate cells updated during the target action; The candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action.

11. The method according to claim 9 or 10, characterized in that: The sending of the first information to the network device comprises: Sending a first target message to the network device, where the first target message carries the first information; The first target message includes at least one of the following: Secondary cell group failure message; Radio link failure report; Successful switching report; Other reports except radio link failure report and successful handover report.

12. A network device, characterized in that: Including memory, transceiver, processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Receiving, by a transceiver, first information sent by a terminal, where the first information is used to assist a network side in performing a mobility robustness optimization MRO associated with a target action; Wherein, the first information is used to indicate relevant information of the target action; The target actions include: a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

13. The network device according to claim 12, characterized in that: The first information includes at least one of the following: Cell identification information, where the cell indicated by the cell identification information is the cell that triggers the target action; The identification information of the terminal in the cell that triggers the target action; The cell identification information of the first target cell accessed by the terminal during the target action, wherein the first target cell satisfies: the cell accessed by the terminal after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell; identification information of the terminal in the first target cell accessed during the process of executing the target action; first indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action; cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action; identification information of the terminal in the second target cell; A list of candidate cells and / or execution conditions corresponding to the candidate cells updated during the target action; The candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action.

14. The network device according to claim 12, characterized in that: The processor is configured to read the computer program in the memory and perform the following operations: receiving, by a transceiver, a first target message sent by the terminal, wherein the first target message carries the first information; The first target message includes at least one of the following: Secondary cell group failure message; Radio link failure report; Successful switching report; Other reports except radio link failure report and successful handover report.

15. The network device according to any one of claims 12 to 14, characterized in that: The processor is configured to read the computer program in the memory and further perform the following operations: The second information is sent to the target node through the transceiver, where the second information includes the first information, and the second information is used for the target node to perform MRO.

16. The network device according to claim 15, characterized in that: The processor is configured to read the computer program in the memory and perform the following operations: Sending a second target message to the target node through a transceiver, wherein the second target message carries the second information; The second target message includes at least one of the following: Secondary cell group failure information report message; Secondary cell group failure transfer message; Other inter-network interface messages except the secondary cell group failure information report message and the secondary cell group failure transfer message; Failure indication message; Switch report message; Uplink wireless access network element configuration transmission message; Downlink wireless access network element configuration transmission message; Other inter-network interface messages except failure indication message, handover report message, uplink radio access network element configuration transmission message and downlink radio access network element configuration transmission message.

17. The network device according to claim 15, characterized in that: In the case where the target action is a primary cell change of a continuous secondary cell group, the target node includes at least one of the following: A node that triggers a primary cell change of a continuous secondary cell group; A node that triggers updating of a candidate cell list of a primary cell of a secondary cell group during a primary cell change of a continuous secondary cell group; a first auxiliary node, the first auxiliary node being the auxiliary node to which the terminal is connected before being transformed to the second auxiliary node, and the second auxiliary node being the auxiliary node to which the terminal has been connected and which provides services for the terminal; The target node when the auxiliary node transformation fails.

18. The network device according to claim 15, characterized in that: In the case where the target action is a primary cell switching of a continuous primary cell group, the target node includes at least one of the following: A node that triggers primary cell switching of a continuous primary cell group; A node that triggers an update of a candidate cell list during a primary cell handover of a continuous primary cell group; The node where the target cell of the handover is located; The node where the source cell of the successful handover is located.

19. The network device according to claim 15, characterized in that: When the target action is a primary cell change of a continuous secondary cell group, the second information further includes at least one of the following: Candidate cells for primary cell transformation of consecutive secondary cell groups and / or transformation execution conditions corresponding to candidate cells for primary cell transformation of consecutive secondary cell groups; The candidate cells updated during the primary cell change process of the continuous secondary cell group and / or the change execution conditions corresponding to the candidate cells updated during the primary cell change process of the continuous secondary cell group; A configuration node for a change execution condition corresponding to a candidate cell for performing a primary cell change of a continuous secondary cell group; The second indication information is used for configuring a primary cell change of a continuous secondary cell group when a secondary cell group failure or a random access failure occurs.

20. A terminal, characterized in that: Including memory, transceiver, processor: A memory for storing a computer program; a transceiver for transmitting and receiving data under the control of the processor; and a processor for reading the computer program in the memory and performing the following operations: Sending first information to a network device, where the first information is used by the network side to perform mobility robustness optimization (MRO) related to a target action; Wherein, the first information is used to indicate relevant information of the target action; The target actions include: a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

21. The terminal according to claim 20, characterized in that: The first information includes at least one of the following: Cell identification information, where the cell indicated by the cell identification information is the cell that triggers the target action; The identification information of the terminal in the cell that triggers the target action; The cell identification information of the first target cell accessed by the terminal during the target action, wherein the first target cell satisfies: the cell accessed by the terminal after the target action is triggered; the cell that triggers the modification of the candidate cell and / or the modification of the execution condition corresponding to the candidate cell; identification information of the terminal in the first target cell accessed during the process of executing the target action; first indication information, where the first indication information is used to indicate that there is a secondary cell group failure, a random access failure, or a radio link failure during the target action; cell identification information of a second target cell, where the second target cell is a cell accessed by the terminal during the target action; identification information of the terminal in the second target cell; A list of candidate cells and / or execution conditions corresponding to the candidate cells updated during the target action; The candidate cell list and / or execution conditions corresponding to the candidate cells configured before the target action.

22. The terminal according to claim 20 or 21, characterized in that: The processor is configured to read the computer program in the memory and perform the following operations: Sending a first target message to the network device through a transceiver, wherein the first target message carries the first information; The first target message includes at least one of the following: Secondary cell group failure message; Radio link failure report; Successful switching report; Other reports except radio link failure report and successful handover report.

23. An information transmission device, applied to a network device, characterized in that: include: A receiving unit, configured to receive first information sent by a terminal, wherein the first information is used to assist a network side in performing a mobility robustness optimization MRO associated with a target action; Wherein, the first information is used to indicate relevant information of the target action; The target actions include: a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

24. An information transmission device, applied to a terminal, characterized in that: include: A first sending unit, configured to send first information to a network device, wherein the first information is used for a network side to perform a mobility robustness optimization MRO related to a target action; Wherein, the first information is used to indicate relevant information of the target action; The target actions include: a primary cell change of consecutive secondary cell groups, wherein the primary cell change of the consecutive secondary cell groups is that the terminal performs at least one primary cell change of the secondary cell group based on at least one candidate cell under the secondary cell group and a change execution condition corresponding to each candidate cell; or The primary cell switching of the continuous primary cell group is that the terminal switches the primary cell of the primary cell group at least once based on at least one candidate cell under the primary cell group and the switching execution condition corresponding to each candidate cell.

25. A processor-readable storage medium, characterized in that: The processor-readable storage medium stores a computer program, and the computer program is used to enable the processor to execute the method according to any one of claims 1 to 11.

Images