Communication method and device and computer readable storage medium

Abstract

The invention provides a communication method and device, and a computer readable storage medium, and the communication method comprises the steps: reporting first information, the first information comprising information related to the condition switching of a main cell and / or the condition adding / updating of a main cell and an auxiliary cell in a dual-connection scene. The invention provides a scheme for assisting the terminal equipment to perform dual-connection condition switching, so that the network equipment can analyze problems existing in the existing dual-connection condition switching based on the first information, the dual-connection condition switching is optimized, and the terminal equipment can smoothly complete the dual-connection switching later.

Description

Technical Field

[0001] The present application relates to the field of communication technology, and in particular to a communication method and device, and a computer-readable storage medium. Background Art

[0002] In New Radio (NR) Release 18 (R18), in order to improve mobility performance, the introduction of dual-connection conditional handover is considered: Conditional Handover (CHO), and Conditional PSCell Addition (CPA) / Conditional PSCell Change (CPC). Among them, CHO is a conditional handover for the primary cell (Pcell), and CPA / CPC is a conditional update for the primary secondary cell (PScell). Strictly speaking, the PSCell conditional update is different from the conventional handover. This article also refers to the primary secondary cell conditional update as conditional handover for the sake of simplicity. The conclusion reached recently is that when the CPA / CPC execution conditions are met but the CHO execution conditions are not met, the terminal device continues to evaluate the execution conditions of CHO and CPA / CPC. For CHO+CPC (configuring candidate primary cells and candidate primary secondary cells at the same time), execution is considered only when two conditions are met (when the CHO execution condition is met but the CPC execution condition is not met, if there is a conditional switching configuration with only the candidate primary cell configuration that meets the CHO condition or a CHO with a secondary cell group (SCG) configuration (the SCG included in the conditional switching configuration has no corresponding switching condition (ie, update condition)), the terminal device executes CHO or executes CHO with SCG, and the network side can handle this situation by providing appropriate configuration).

[0003] When the network side configures CHO and CPA / CPC for the terminal device, the terminal device needs to implement switching only when both the candidate PCell and the candidate PSCell meet their respective switching execution conditions, and access the PCell and PSCell that meet the conditions at the same time.

[0004] However, in actual network configuration, there may be unreasonable parameters, which may cause the terminal equipment to fail to smoothly implement the switching between CHO and CPA / CPC. Summary of the invention

[0005] The present application provides a communication method and apparatus, and provides a solution for assisting terminal devices in performing dual connection condition switching, which enables network devices to analyze problems existing in existing dual connection condition switching based on first information, optimize the dual connection condition switching configuration, and enable a large number of terminal devices to successfully complete the dual connection condition switching afterwards.

[0006] In order to achieve the above objectives, this application provides the following technical solutions:

[0007] In a first aspect, a communication method is provided, the communication method comprising: reporting the first information, the first information comprising information related to primary cell condition switching and / or primary and secondary cell condition addition / update in a dual connectivity scenario.

[0008] Optionally, the first information includes one or more of the following: the first moment when the candidate primary cell satisfies the primary cell switching condition and the second moment when the candidate primary and secondary cell satisfies the primary and secondary cell switching condition, the time interval between the first moment and the second moment, the time interval between the third moment when the candidate primary cell and the candidate primary and secondary cell simultaneously satisfy the switching condition and the fourth moment when the conditional switching configuration of the candidate primary cell and the candidate primary and secondary cell is received, the time interval between the first moment and the fourth moment, and the time interval between the second moment and the fourth moment.

[0009] Optionally, the first information includes signal quality information of a cell corresponding to a primary cell switching condition and a primary / secondary cell switching condition when one of the primary cell switching condition and the primary / secondary cell switching condition is met.

[0010] Optionally, the first information includes signal quality information of the candidate primary and secondary cells when the candidate primary cell meets the primary cell switching condition; or, the first information includes signal quality information of the candidate primary and secondary cells when the candidate primary and secondary cells meet the primary and secondary cell switching condition.

[0011] Optionally, the signal quality information of the cell includes one or more of the following: the signal value of the cell, the difference between the signal value of the cell and the event entry condition included in the switching condition, the duration for the signal value of the cell to reach the event entry condition included in the switching condition, and the expected time to meet the switching condition, the expected time indicating the difference between the duration and the trigger duration included in the switching condition.

[0012] Optionally, the first information includes whether a primary cell switching condition is met and / or whether a primary and secondary cell switching condition is met in the event of a radio link failure or a switching failure.

[0013] Optionally, the first information includes, when one of the primary cell switching condition and the primary and secondary cell switching condition is met, a moment of satisfaction and a fifth moment at which a radio link failure occurs, and / or a time interval between the moment of satisfaction and the fifth moment.

[0014] Optionally, the first information includes a failure cause in the event of a wireless link failure or a switching failure, wherein the failure cause includes a separate switching command for not configuring the primary cell condition switching, and / or indication information, wherein the indication information is used to indicate that only the primary and secondary cell switching conditions are met or only the primary cell switching conditions are met.

[0015] Optionally, the dual-connectivity conditional switching configuration includes one or more groups of cells, each group of cells includes at least one candidate primary cell and at least one candidate primary and secondary cell; and reporting the first information includes: reporting first information for at least one group of cells.

[0016] Optionally, reporting the first information includes: sending high-layer signaling, where the high-layer signaling includes the first information.

[0017] In a second aspect, the present application further discloses a communication method, which includes: receiving first information, wherein the first information includes information related to primary cell condition switching and / or primary and secondary cell condition addition / update in a dual connectivity scenario.

[0018] Optionally, the first information includes one or more of the following: the first moment when the candidate primary cell satisfies the primary cell switching condition and the second moment when the candidate primary and secondary cell satisfies the primary and secondary cell switching condition, the time interval between the first moment and the second moment, the time interval between the third moment when the candidate primary cell and the candidate primary and secondary cell simultaneously satisfy the switching condition and the fourth moment when the conditional switching configuration of the candidate primary cell and the candidate primary and secondary cell is received, the time interval between the first moment and the fourth moment, and the time interval between the second moment and the fourth moment.

[0019] Optionally, the first information includes signal quality information of a cell corresponding to a primary cell switching condition and a primary / secondary cell switching condition when one of the primary cell switching condition and the primary / secondary cell switching condition is met.

[0020] Optionally, the first information includes whether a primary cell switching condition is met and / or whether a primary and secondary cell switching condition is met in the event of a radio link failure or a switching failure.

[0021] Optionally, the first information includes the cause of failure in the event of a wireless link failure or a switching failure, the cause of failure including a separate switching command for not configuring the main cell condition switching, and / or second indication information, the second indication information being used to indicate that only the main and auxiliary cell switching conditions are met or only the main cell switching conditions are met.

[0022] In a third aspect, the present application also discloses a communication device, which includes: a communication module, used to report the first information, wherein the first information includes information related to the switching of primary cell conditions and / or the addition / update of primary and secondary cell conditions in a dual connection scenario.

[0023] In a fourth aspect, the present application also discloses a communication device, which includes: a communication module for receiving first information, wherein the first information includes information related to primary cell condition switching and / or primary and secondary cell condition addition / update in a dual connection scenario.

[0024] In a fifth aspect, a computer-readable storage medium is provided, on which a computer program is stored, and the computer program is executed by a processor to execute any one of the methods provided in the first aspect or the second aspect.

[0025] In a sixth aspect, a communication device is provided, comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, and the processor executes the computer program to execute any one of the methods provided in the first aspect.

[0026] In a seventh aspect, a communication device is provided, comprising a memory and a processor, wherein the memory stores a computer program executable on the processor, and wherein the processor executes the computer program to execute any one of the methods provided in the second aspect.

[0027] In an eighth aspect, a computer program product is provided, on which a computer program is stored, and the computer program is executed by a processor to execute any one of the methods provided in the first aspect or the second aspect.

[0028] In a ninth aspect, a communication system is provided, comprising the above-mentioned terminal device and the above-mentioned network device.

[0029] In the tenth aspect, an embodiment of the present application further provides a chip (or a data transmission device) on which a computer program is stored, and when the computer program is executed by the chip, the steps of the above method are implemented.

[0030] In the eleventh aspect, an embodiment of the present application also provides a system chip, which is applied to a terminal, and the chip system includes at least one processor and an interface circuit, the interface circuit and the at least one processor are interconnected through lines, and the at least one processor is used to execute instructions to execute any one of the methods provided in the first aspect or the second aspect.

[0031] Compared with the prior art, the technical solution of this application has the following beneficial effects:

[0032] In the technical solution of the present application, the terminal device reports the first information to the network side, and the first information includes information related to the primary cell condition switching and / or the primary and secondary cell condition addition / update in the dual connection scenario. The technical solution of the present application sets the terminal device to report the first information, so that the auxiliary network side can timely learn the validity of the configuration parameters of the dual connection condition switching, analyze the problems existing in the dual connection condition switching, so as to adjust the parameter configuration in time, realize the reasonable configuration of the subsequent dual connection condition switching, and enable many terminal devices to successfully complete the dual connection condition switching and improve the communication performance.

[0033] Furthermore, the first information includes one or more of the following: the first moment when the candidate primary cell meets the primary cell switching condition and the second moment when the candidate primary and secondary cells meet the primary and secondary cell switching condition, the time interval between the first moment and the second moment, the time interval between the third moment when the candidate primary cell and the candidate primary and secondary cells simultaneously meet the switching condition and the fourth moment when the candidate primary cell and the candidate primary and secondary cell condition switching configuration are received, the time interval between the first moment and the fourth moment, and the time interval between the second moment and the fourth moment. By setting the above-mentioned first information, the technical solution of the present application can enable the network side to analyze whether the parameters such as the duration of the event entry condition included in the switching condition are reasonably configured based on the above-mentioned first information, which helps to configure more reasonable parameters on the network side, so that the terminal device can complete the dual connection switching in time and improve the mobility performance.

[0034] Furthermore, the first information includes signal quality information of the other corresponding cell when one of the primary cell switching condition and the primary and secondary cell switching condition is met. By setting the above-mentioned first information, the technical solution of the present application enables the network side to analyze whether the parameters such as the event entry conditions included in the switching conditions are reasonably configured based on the above-mentioned first information, which helps to configure more reasonable parameters on the network side, making it easier for the terminal device to complete the dual connection condition switching later and improve the mobility performance.

[0035] Furthermore, the first information includes whether the primary cell switching condition is met and / or whether the primary and secondary cell switching conditions are met in the event of a radio link failure or a handover failure. Since there are many reasons for the radio link failure or the handover failure, the technical solution of the present application records and reports the above-mentioned first information, so that the network device can promptly know the specific reasons for the radio link failure or the handover failure, which helps the network device to make targeted adjustments in the subsequent dual-connection condition handover parameter configuration, so that the terminal device can successfully complete the dual-connection condition handover and improve the communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is an interactive flow chart of a communication method provided in an embodiment of the present application;

[0037] Figure 2 is an interactive flow chart of another communication method provided in an embodiment of the present application;

[0038] Figure 3 is an interactive flow chart of another communication method provided in an embodiment of the present application;

[0039] Figure 4 is an interactive flow chart of another communication method provided in an embodiment of the present application;

[0040] Figure 5 is a structural diagram of a communication device provided in an embodiment of the present application;

[0041] Figure 6 It is a schematic diagram of the hardware structure of a communication device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0042] The communication systems to which the embodiments of the present application are applicable include, but are not limited to, Long Term Evolution (LTE) systems, fifth-generation (5G) systems, new wireless (NR) systems, and future evolution systems or multiple communication fusion systems. Among them, the 5G system can be a non-standalone (NSA) 5G system or a standalone (SA) 5G system. The technical solution of the present application is also applicable to different network architectures, including but not limited to relay network architectures, dual-connection architectures, vehicle-to-everything communication architectures, and other architectures.

[0043] This application mainly relates to the communication between terminal equipment and network equipment. Among them:

[0044] The network device in the embodiment of the present application may also be referred to as an access network device, for example, it may be a base station (BS) (also referred to as a base station device), and the network device is a device deployed in a radio access network (RAN) to provide wireless communication functions. For example, in the second-generation (2G) network, the equipment that provides base station functions includes the base transceiver station (BTS), in the third-generation (3G) network, the equipment that provides base station functions includes the node B (NodeB), and in the fourth-generation (4G) network, the equipment that provides base station functions includes the evolved node B (eNB). In wireless local area networks (WLAN), the equipment that provides base station functions is the access point (AP), and the equipment that provides base station functions in NR is the next generation Node Base station (gNB), as well as the evolved node B (ng-eNB), where the gNB and the terminal device communicate using NR technology, and the ng-eNB and the terminal device communicate using evolved universal terrestrial radio access (Evolved Universal Terrestrial Radio Access, E-UTRA) technology, and both gNB and ng-eNB can be connected to the 5G core network. The network devices in the embodiments of the present application also include devices that provide base station functions in future new communication systems, etc.

[0045] The terminal equipment in the embodiments of the present application may refer to various forms of access terminals, user units, user stations, mobile stations, mobile stations (Mobile Station, MS), remote stations, remote terminals, mobile devices, user terminals, wireless communication devices, user agents or user devices. The terminal equipment may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G network or a terminal device in a future evolving Public Land Mobile Network (PLMN), etc., which is not limited in the embodiments of the present application. The terminal equipment may also be referred to as User Equipment (UE), a terminal, etc.

[0046] As described in the background art, in actual network configuration, there may be unreasonable parameters, which may cause the terminal device to fail to smoothly implement the switching between CHO and CPA / CPC.

[0047] The technical solution of the present application sets the terminal device to report the first information, assists the network side to promptly learn the validity of the configuration parameters of the dual connection condition switching, analyzes the problems existing in the dual connection condition switching, and thereby can timely adjust the parameter configuration, achieve reasonable configuration of subsequent dual connection condition switching, and enable the terminal device to successfully complete the dual connection condition switching and improve communication performance.

[0048] In order to make the above-mentioned objects, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0049] See also Figure 1 The method provided in this application specifically comprises the following steps:

[0050] Step 101: The terminal device reports first information to the network device.

[0051] In this embodiment, the terminal device may configure dual connectivity and primary cell condition switching and / or primary and secondary cell condition addition / update, that is, the terminal device reports the first information when accessing the primary cell and the primary and secondary cells;

[0052] Alternatively, the first information includes information related to the main cell condition switching and / or the main and auxiliary cell condition addition / update in the dual connection scenario, but the cell accessed when the terminal device reports the first information is not configured for dual connection, or the main cell condition switching and / or the main and auxiliary cell condition addition / update are not configured. In this embodiment, after receiving the first information, the network device will first determine the original service cell corresponding to the first information, and can analyze the first information to determine whether there are problems with the parameters of the dual connection condition switching previously configured for the terminal device, such as whether the threshold in the main cell switching condition is set reasonably, whether the threshold in the main and auxiliary cell switching condition is set reasonably, and whether the duration of the event entry condition included in the switching condition is appropriate. If there is a problem, the network device can adjust the corresponding parameters for subsequent terminal device mobility parameter configuration to improve mobility performance.

[0053] It should be noted that the dual connection referred to in this article means that the terminal device is connected to two network devices or two wireless standards at the same time. Specifically, the terminal device accesses the primary cell and the primary and secondary cells at the same time. For example, it can be various dual connections in the protocol TS37.340, or it can be dual connections introduced in 6G and future evolution systems, and this application does not limit this.

[0054] It should be pointed out that the serial numbers of the steps in this embodiment do not limit the execution order of the steps.

[0055] It is understandable that, in a specific implementation, the communication method can be implemented in the form of a software program, which runs in a processor integrated inside a chip or a chip module. The method can also be implemented in the form of software combined with hardware, which is not limited in this application.

[0056] In this embodiment, the terminal device accesses the primary cell PCell, establishes a Radio Resource Control (RRC) connection, then establishes a Data Radio Bearer (DRB), and starts data transmission. Specifically, the terminal device can establish one or more DRBs.

[0057] PCell can configure dual connectivity for terminal devices according to the service needs of terminal devices, such as NR dual connectivity (Dual connectivity, NR-DC). Afterwards, the network device configures dual connectivity conditional switching for the terminal device in order to meet mobility requirements and find that the terminal device supports conditional switching, such as CHO and CPA / CPC, that is, the primary cell conditional switching configuration includes the addition / update of primary and secondary cell conditions. PCell can send a conditional switching request to the base station to which one or more candidate PCells in the surrounding area belong, requesting the configuration of candidate PCells and candidate PSCells.

[0058] In a specific application scenario, the network side configures two sets of configurations for the terminal device:

[0059] 1. The candidate primary cell PCell1 and the corresponding primary cell switching condition, as well as the candidate primary and secondary cell PSCell1 and the corresponding primary and secondary cell switching condition;

[0060] 2. The candidate primary cell PCell2 and the corresponding primary cell switching condition, as well as the candidate primary secondary cell PSCell2 and the corresponding primary secondary cell switching condition.

[0061] That is, the network device configures two groups of cells for the terminal device, where the first group includes PCell1 and PSCell1, and the second group includes PCell2 and PSCell2. The network device (such as PCell) sends the configured dual-connection condition switching configuration to the terminal device, and the terminal device starts to evaluate the candidate PCell and candidate PSCell. The switching condition is also called the switching execution condition. This article also refers to the primary and secondary cell addition / update condition as the primary and secondary cell switching condition for the purpose of unified and concise description.

[0062] In a specific implementation, the terminal device may record the first information during the process of evaluating the candidate PCell and the candidate PSCell. The terminal device reports the first information to the network device through a high-layer signaling.

[0063] Depending on the actual evaluation results, there are multiple scenarios: dual connection condition switching success, dual connection condition switching failure, and wireless link failure. Among them, dual connection condition switching failure means that the terminal device cannot successfully access the target cell during the condition switching process, and wireless link failure means that there is a problem with the link between the terminal device and the source service cell. The following is an explanation in conjunction with the specific first information.

[0064] Embodiment 1, scenario in which dual-connectivity conditional switching is successful: the first information includes one or more of the following: the first moment when the candidate primary cell satisfies the primary cell switching condition and the second moment when the candidate primary and secondary cells satisfy the primary and secondary cell switching condition, the time interval between the first moment and the second moment, the time interval between the third moment when the candidate primary cell and the candidate primary and secondary cells simultaneously satisfy the switching condition and the fourth moment when the conditional switching configuration of the candidate primary cell and the candidate primary and secondary cells is received, the time interval between the first moment and the fourth moment, and the time interval between the second moment and the fourth moment.

[0065] In the embodiment of the present invention, the terminal device receives the candidate primary cell and the candidate primary and secondary cell conditional switching configuration from the network device at time T4 (ie, the fourth time).

[0066] Please refer to Figure 2In step 201, the terminal device prepares to access the target network device.

[0067] Specifically, during the evaluation process, the terminal device finds that PCell1 meets the switching execution condition at time T1 (i.e., the first time), and PSCell1 meets the update execution condition at time T2 (i.e., the second time) (at this time, PCell1 still continues to meet the switching execution condition), wherein time T1 is earlier than time T2. Then the terminal device accesses PCell1 and PSCell1 at or after time T2.

[0068] Alternatively, during the evaluation process, the terminal device finds that PCell1 and PSCell1 both meet the update execution condition at time T3 (ie, the third time). Then, the terminal device accesses PCell1 and PSCell1 at or after time T3.

[0069] In step 202, the terminal device reports first information to the network device.

[0070] When the terminal device finds that both the candidate PCell and the candidate PSCell meet the corresponding switching conditions, it accesses the candidate PCell and the candidate PSCell, and they become the target PCell and the target PSCell of the terminal device. During the access process, the terminal device records the first information; or the terminal device may first record the first information and then access the target PCell and the target PSCell.

[0071] After the terminal device accesses the target PCell and the target PSCell, the terminal device may report the first information.

[0072] For example, the terminal device records time T1 and time T2, and reports time T1 and time T2 to the network device. The network device can learn the difference between time T1 and time T2, and optimize the relevant parameters of the subsequent dual connection condition switching based on the difference.

[0073] For another example, the terminal device records time T1 and time T2, calculates the time interval between time T1 and time T2, and reports the time interval to the network device.

[0074] For another example, the terminal device records time T1 and time T2, calculates the time interval between time T1 and time T4, and the time interval between time T2 and time T4, and reports the above time intervals to the network device.

[0075] For another example, the terminal device records time T3, calculates the time interval between time T3 and time T4, and reports the time interval to the network device.

[0076] In step 202, since the dual connection condition of the terminal device is switched successfully, the terminal device can report the first information to the target network device after the switch through high-layer signaling.

[0077] Embodiment 2, scenario where dual connection condition switching fails: the first information includes one or more of the following: when one of the primary cell switching condition and the primary and secondary cell switching condition is met, the signal quality information of the other corresponding cell; whether the primary cell switching condition is met; whether the primary and secondary cell switching conditions are met; the reason for failure.

[0078] In step 301, the terminal device reports first information.

[0079] In the embodiment of the present invention, the failure of dual connection condition switching can be specifically divided into three situations.

[0080] Case 1: the candidate primary cell meets the corresponding primary cell switching condition, and the candidate primary and secondary cells do not meet the corresponding primary and secondary cell switching condition.

[0081] In this case, the terminal device records the signal quality information of the candidate primary and secondary cells. In step 302, the terminal device reports the signal quality information of the candidate primary and secondary cells to the network device.

[0082] For example, the candidate primary cell PCell1 meets the corresponding primary cell switching condition at time T1, and the candidate primary secondary cell PSCell1 does not meet the corresponding primary secondary cell switching condition, and the terminal device records the signal quality information of PSCell1 at time T1.

[0083] The signal quality information may specifically include one or more of the following: the signal value of the cell, the difference between the signal value of the cell and the event entry condition included in the switching condition, the duration for the signal value of the cell to reach the event entry condition included in the switching condition, and the expected time to meet the switching condition, where the expected time represents the difference between the duration and the trigger duration included in the switching condition.

[0084] For example, the switching condition of the primary and secondary cells corresponding to the PSCell1 configured by the network is that the signal quality of the candidate PSCell1 is 2db higher than that of the serving PSCell and needs to last for 80 milliseconds (ms) (that is, TimeToTrigger is 80ms); at time T1, PSCell1 is 2db higher than the serving PSCell and lasts for 20ms. Then, the terminal device can record the following first information: signal value of PSCell1, difference 2db, duration 20ms, expected time 60ms.

[0085] Accordingly, the terminal device may also record the first information for the second group of cells (PCell2 and PSCell2). That is, when PCell2 meets the corresponding primary cell switching condition, the terminal device records one or more of the signal value, difference, duration, expected time, etc. of PSCell2 at time T1.

[0086] Furthermore, when the terminal device reports the first information, the terminal device may report the signal quality information of PSCell1 and the signal quality information of PSCell2 respectively. The terminal device may also report the signal quality information of PSCell1 and the signal quality information of PSCell2 together.

[0087] Furthermore, the terminal device may also record whether the primary cell switching condition is met and / or whether the primary and secondary cell switching condition is met. For example, the terminal device may record the following first information: PCell1 meets the corresponding primary cell switching condition, PSCell1 does not meet the corresponding primary and secondary cell switching condition, signal value of PSCell1, difference 2db, duration 20ms, expected time 60ms.

[0088] Case 2: the candidate primary cell does not meet the corresponding primary cell switching condition, and the candidate primary and secondary cells meet the corresponding primary and secondary cell switching conditions.

[0089] In this case, the terminal device records the signal quality information of the candidate primary cell. In step 302, the terminal device reports the signal quality information of the candidate primary cell to the network device.

[0090] For example, the candidate primary and secondary cell PSCell1 satisfies the corresponding primary and secondary cell switching condition (ie, the primary and secondary cell adding / updating condition) at time T2, and the terminal device records the signal quality information of PCell1 at time T2.

[0091] For example, the switching condition of the primary cell corresponding to PCell1 is that the signal quality of candidate PCell1 is 2db higher than that of serving PCell and needs to last for 80 milliseconds (ms); at time T2, PCell1 is 2db higher than serving PCell and lasts for 20ms. Then, the terminal device can record the following first information: signal value of PCell1, difference 2db, duration 20ms, expected time 60ms.

[0092] Accordingly, the terminal device may also record the first information for the second group of cells (PCell2 and PSCell2). For example, when PSCell2 meets the corresponding primary and secondary cell switching conditions, the terminal device records one or more of the signal value, difference, duration, expected time, etc. of PCell2 at time T2.

[0093] Furthermore, the terminal device may report the signal quality information of PCell 1 and the signal quality information of PCell 2 respectively. The terminal device may also report the signal quality information of PCell 1 and the signal quality information of PCell 2 together.

[0094] Furthermore, the terminal device may also record whether the primary cell switching condition is met and / or whether the primary and secondary cell switching condition is met. For example, the terminal device may record the following first information: PSCell1 meets the corresponding primary cell switching condition, PCell1 does not meet the corresponding primary and secondary cell switching condition, signal value of PCell1, difference 2db, duration 20ms, expected time 60ms.

[0095] Case 3: The candidate primary cell does not meet the corresponding primary cell switching condition, and the candidate primary and secondary cells do not meet the corresponding primary and secondary cell switching conditions.

[0096] In this case, the terminal device may record that the primary cell switching condition is not met and / or the primary and secondary cell switching condition is not met. For example, the terminal device may record the following first information: PCell1 does not meet the corresponding primary cell switching condition, and PSCell1 does not meet the corresponding primary and secondary cell switching condition.

[0097] Furthermore, in Example 2, the first information may also include the reason for failure in the event of a switching failure, the reason for failure including a separate switching command for not configuring the main cell conditional switching (i.e., the main cell conditional switching configuration does not include PSCell), and / or indication information, the indication information is used to indicate that only the main and auxiliary cell switching conditions are met or only the main cell switching conditions are met.

[0098] For example, PCell1 meets the corresponding primary cell switching condition at time T1, PSCell1 does not meet the corresponding primary and secondary cell switching condition, but the network does not configure a separate switching command for CHO (that is, the primary cell condition switching configuration does not include CPC / CPA). Then, when a switching failure occurs, the terminal device records the failure reason as not configuring a separate switching command for the primary cell condition switching, or only meeting the primary cell switching condition.

[0099] For example, PSCell1 meets the corresponding primary-secondary cell switching condition at time T2, and candidate primary cell PCell1 does not meet the corresponding primary cell switching condition. Then, when a switching failure occurs, the terminal device records the failure reason as only meeting the primary-secondary cell switching condition.

[0100] Since the terminal device fails to switch the dual connection conditions, the terminal device may trigger RRC reconstruction to re-establish communication with the network, so the terminal device can report the first information to the network device through high-level signaling; the terminal device may also temporarily interrupt communication with the network and enter an idle state, and the terminal device continues to save the recorded first information, and then reports the first information to the network device through high-level signaling when re-accessing the network.

[0101] Embodiment 3, scenario of wireless link failure: the first information includes one or more of the following: whether the main cell switching condition is met, whether the main and auxiliary cell switching conditions are met, the signal quality of the candidate main cell, the signal quality of the candidate main and auxiliary cells, and when one of the main cell switching condition and the main and auxiliary cell switching condition is met, the time interval between the moment of satisfaction and the fifth moment when the wireless link failure occurs.

[0102] In this embodiment, the terminal device continuously evaluates candidate cells, but within a period of time, it fails to meet the corresponding switching conditions for both the candidate PCell and the candidate PSCell, resulting in the terminal device continuing to maintain a connection with the source service cell, but in some cases (for example, the terminal device moves to the edge of the cell), the terminal device encounters a wireless link failure on the source service cell side.

[0103] The terminal device may record the first information at or after the fifth time when the wireless link failure occurs.

[0104] In step 401, the terminal device establishes an RRC connection with the network device. The terminal device may perform RRC reestablishment to restore the connection with the network device; or if the terminal device enters an idle state after a radio link failure, the terminal device may initiate an RRC connection establishment process again to establish an RRC connection with the network device.

[0105] In step 402, the terminal device reports the first information to the network device. That is, the terminal device reports the first information after the RRC reestablishment is successful.

[0106] For example, the candidate primary cell PCell1 meets the corresponding primary cell switching condition at time T1, the candidate primary secondary cell PSCell1 does not meet the corresponding primary secondary cell switching condition, and the terminal device has a radio link failure at time T5. The terminal device records time T1 and time T5, and reports time T1 and time T5 to the network device.

[0107] For another example, the terminal device records time T1 and time T5, calculates the time interval between time T1 and time T5, and reports the time interval to the network device.

[0108] In a non-limiting embodiment, the number of time intervals between the satisfying moment and the fifth moment may be multiple. At this time, the terminal device reports multiple time intervals to the network device.

[0109] For example, PCell1 meets the corresponding primary cell switching condition at time T1, and PSCell1 does not meet the corresponding primary and secondary cell switching condition at time T1; after a period of time, PCell1 does not meet the corresponding primary cell switching condition at time T6, and PSCell1 meets the corresponding primary and secondary cell switching condition at time T6; after another period of time, PCell1 meets the corresponding primary cell switching condition at time T7, and PSCell1 does not meet the corresponding primary and secondary cell switching condition at time T7. Then, the terminal device can calculate the time interval between time T1 and time T5, the time interval between time T6 and time T5, and the time interval between time T7 and time T5, and report the above three time intervals to the network device.

[0110] Further, in Example 3, the first information may also include a cause of failure in the event of a wireless link failure, the cause of failure including a separate switching command for not configuring the main cell conditional switching, and / or indication information, the indication information being used to indicate that only the main and auxiliary cell switching conditions are met or only the main cell switching conditions are met.

[0111] For example, PCell1 meets the corresponding primary cell switching condition at time T1, PSCell1 does not meet the corresponding primary and secondary cell switching condition, but the network does not configure a separate switching command for CHO (that is, the primary cell condition switching configuration does not include CPC / CPA). Then, when a radio link failure occurs on the source side, the terminal device records the failure reason as not configuring a separate switching command for the primary cell condition switching, or only meeting the primary cell switching condition.

[0112] For example, PSCell1 meets the corresponding primary and secondary cell switching conditions at time T2, and candidate primary cell PCell1 does not meet the corresponding primary cell switching conditions. Then, when a radio link failure occurs on the source side, the terminal device records the failure reason as only meeting the primary and secondary cell switching conditions.

[0113] Further, in Embodiment 3, the first information may also include whether the candidate primary cell meets the switching condition and whether the candidate primary and secondary cells meet the switching condition at the time when the radio link failure occurs. The terminal device may also record the signal quality of the candidate primary cell and the candidate primary and secondary cells at this time, respectively, and if the candidate primary cell meets the entry condition of the event corresponding to the switching condition, record the duration of meeting the entry condition, or record the expected time of meeting the switching condition.

[0114] For more specific implementation methods of the embodiments of the present application, please refer to the aforementioned embodiments, which will not be repeated here.

[0115] Please refer to Figure 5 , Figure 5 A communication device 50 is shown, which may include:

[0116] The communication module 501 is used to report the first information.

[0117] In a specific implementation, the above-mentioned communication device 50 may correspond to a chip with communication function in a terminal device, such as a system-on-a-chip (SOC), a baseband chip, etc.; or correspond to a chip module with communication function in a terminal device; or correspond to a chip module with a data processing function chip, or correspond to a terminal device.

[0118] In another embodiment, the communication module 501 may be used to receive first information.

[0119] In a specific implementation, the above-mentioned communication device 50 may correspond to a chip with communication function in a network device, such as a SOC, a baseband chip, etc.; or correspond to a chip module with communication function in a network device; or correspond to a chip module with a data processing function chip, or correspond to a network device.

[0120] For other related descriptions about the communication device 50 , reference may be made to the related descriptions in the aforementioned embodiments, which will not be repeated here.

[0121] Regarding the various modules / units included in the various devices and products described in the above embodiments, they can be software modules / units, or hardware modules / units, or they can be partially software modules / units and partially hardware modules / units. For example, for various devices and products applied to or integrated in a chip, the various modules / units included therein can all be implemented in the form of hardware such as circuits, or at least some of the modules / units can be implemented in the form of software programs, which run on a processor integrated inside the chip, and the remaining (if any) modules / units can be implemented in the form of hardware such as circuits; for various devices and products applied to or integrated in a chip module, the various modules / units included therein can all be implemented in the form of hardware such as circuits, and different modules / units can be located in the same component of the chip module (such as a chip, circuit module, etc.) or in different components, or at least some of the modules / units can be implemented in the form of software programs. It is implemented in the form of a software program, which runs on a processor integrated inside the chip module, and the remaining (if any) modules / units can be implemented in hardware such as circuits; for various devices and products applied to or integrated in the terminal equipment, the various modules / units contained therein can be implemented in hardware such as circuits, and different modules / units can be located in the same component (for example, chip, circuit module, etc.) or in different components in the terminal equipment, or, at least some modules / units can be implemented in the form of a software program, which runs on a processor integrated inside the terminal equipment, and the remaining (if any) modules / units can be implemented in hardware such as circuits.

[0122] The embodiment of the present application also discloses a storage medium, which is a computer-readable storage medium, on which a computer program is stored, and when the computer program is run, the steps of the method shown in the above embodiment can be executed. The storage medium may include a read-only memory (ROM), a random access memory (RAM), a disk or an optical disk, etc. The storage medium may also include a non-volatile memory (non-volatile) or a non-transitory memory, etc.

[0123] Please refer to Figure 6 The embodiment of the present application also provides a hardware structure diagram of a communication device. The device includes a processor 601, a memory 602 and a transceiver 603.

[0124] Processor 601 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of the program of the present application. Processor 601 may also include multiple CPUs, and processor 601 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. The processor here may refer to one or more devices, circuits, or processing cores for processing data (such as computer program instructions).

[0125] The memory 602 may be a ROM or other types of static storage devices that can store static information and instructions, a RAM or other types of dynamic storage devices that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a compact disc read-only memory (CD-ROM) or other optical disc storage, optical disc storage (including compressed optical disc, laser disc, optical disc, digital versatile disc, Blu-ray disc, etc.), a disk storage medium or other magnetic storage device, or any other medium that can be used to carry or store the desired program code in the form of an instruction or data structure and can be accessed by a computer, and the embodiments of the present application do not impose any restrictions on this. The memory 602 may exist independently (in this case, the memory 602 may be located outside the device or inside the device), or it may be integrated with the processor 601. Among them, the memory 602 may contain a computer program code. The processor 601 is used to execute the computer program code stored in the memory 602, thereby realizing the method provided in the embodiments of the present application.

[0126] The processor 601, the memory 602 and the transceiver 603 are connected via a bus. The transceiver 603 is used to communicate with other devices or a communication network. Optionally, the transceiver 603 may include a transmitter and a receiver. The device used to implement the receiving function in the transceiver 603 can be regarded as a receiver, and the receiver is used to perform the receiving step in the embodiment of the present application. The device used to implement the sending function in the transceiver 603 can be regarded as a transmitter, and the transmitter is used to perform the sending step in the embodiment of the present application.

[0127] when Figure 6 The schematic diagram of the structure shown in FIG. 1 is used to illustrate the structure of the terminal device involved in the above embodiment. The processor 601 is used to control and manage the actions of the terminal device. For example, the processor 601 is used to support the terminal device to execute Figure 1 Step 101 in , or Figure 2 Steps 201 and 202 in , or Figure 3 Step 301 in , or Figure 4 The processor 601 may communicate with other network entities, for example, the above-mentioned network device, through the transceiver 603. The memory 602 is used to store program codes and data of the terminal device. When the processor runs the computer program, it may control the transceiver 603 to send / receive RRC signaling.

[0128] when Figure 6 The schematic diagram of the structure shown in FIG. 1 is used to illustrate the structure of the network device involved in the above embodiment. The processor 601 is used to control and manage the actions of the network device. For example, the processor 601 is used to support the network device to execute Figure 1 Step 101 in , or Figure 2 Steps 201 and 202 in , or Figure 3 Step 301 in , or Figure 4 The processor 601 may communicate with other network entities, for example, the terminal device, through the transceiver 603. The memory 602 is used to store program codes and data of the network device. When the processor runs the computer program, it may control the transceiver 603 to send / receive RRC signaling.

[0129] The embodiment of the present application defines a unidirectional communication link from an access network to a terminal device as a downlink, data transmitted on the downlink is downlink data, and the transmission direction of downlink data is called the downlink direction; and a unidirectional communication link from a terminal device to an access network is an uplink, data transmitted on the uplink is uplink data, and the transmission direction of uplink data is called the uplink direction.

[0130] It should be understood that the term "and / or" in this article is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article indicates that the associated objects before and after are in an "or" relationship.

[0131] The "plurality" appearing in the embodiments of the present application refers to two or more.

[0132] The first, second, etc. descriptions appearing in the embodiments of the present application are only used for illustration and distinction of the description objects. There is no order, nor do they indicate any special limitation on the number of devices in the embodiments of the present application, and cannot constitute any limitation on the embodiments of the present application.

[0133] The "connection" that appears in the embodiments of the present application refers to various connection methods such as direct connection or indirect connection to achieve communication between devices, and the embodiments of the present application do not impose any limitations on this.

[0134] The above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination thereof. When implemented using software, the above embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions described in the embodiments of the present application are generated in whole or in part. The computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices. The computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer instructions may be transmitted from one website site, computer, server or data center to another website site, computer, server or data center by wired or wireless means.

[0135] It should be understood that in the various embodiments of the present application, the size of the serial numbers of the above-mentioned processes does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present application.

[0136] In the several embodiments provided in the present application, it should be understood that the disclosed methods, devices and systems can be implemented in other ways. For example, the device embodiments described above are merely schematic; for example, the division of the units is only a logical function division, and there may be other division methods in actual implementation; for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be through some interfaces, indirect coupling or communication connection of devices or units, which can be electrical, mechanical or other forms.

[0137] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0138] In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may be physically included 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 hardware plus software functional units.

[0139] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a storage medium, including a number of instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to perform some steps of the method described in each embodiment of the present application.

[0140] Although the present application is disclosed as above, the present application is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the present application. Therefore, the protection scope of the present application shall be subject to the scope defined by the claims.

Claims

1. A communication method, characterized in that: include: Reporting first information, where the first information includes information related to primary cell condition switching and / or primary and secondary cell condition addition / update in a dual connectivity scenario.

2. The communication method according to claim 1, characterized in that: The first information includes one or more of the following: the first moment when the candidate primary cell satisfies the primary cell switching condition and the second moment when the candidate primary and secondary cell satisfies the primary and secondary cell switching condition, the time interval between the first moment and the second moment, the time interval between the third moment when the candidate primary cell and the candidate primary and secondary cell simultaneously satisfy the switching condition and the fourth moment when the conditional switching configuration of the candidate primary cell and the candidate primary and secondary cell is received, the time interval between the first moment and the fourth moment, and the time interval between the second moment and the fourth moment.

3. The communication method according to claim 1, characterized in that: The first information includes signal quality information of a cell corresponding to the other cell when one of the primary cell switching condition and the primary and secondary cell switching condition is met.

4. The communication method according to claim 3, characterized in that: The first information includes signal quality information of the candidate primary and secondary cells when the candidate primary cell meets the primary cell switching condition; or, the first information includes signal quality information of the candidate primary and secondary cells when the candidate primary and secondary cells meet the primary and secondary cell switching condition.

5. The communication method according to claim 3, characterized in that: The signal quality information of the cell includes one or more of the following: the signal value of the cell, the difference between the signal value of the cell and the event entry condition included in the switching condition, the duration for the signal value of the cell to reach the event entry condition included in the switching condition, and the expected time for satisfying the switching condition, wherein the expected time represents the difference between the duration and the trigger duration included in the switching condition.

6. The communication method according to claim 1, characterized in that: The first information includes whether a primary cell switching condition is satisfied and / or whether a primary and secondary cell switching condition is satisfied in the event of a radio link failure or a handover failure.

7. The communication method according to claim 6, characterized in that: The first information includes, when one of the primary cell switching condition and the primary and secondary cell switching condition is met, a satisfying moment and a fifth moment at which a radio link failure occurs, and / or a time interval between the satisfying moment and the fifth moment.

8. The communication method according to claim 1, characterized in that: The first information includes the cause of failure in the event of a wireless link failure or a switching failure, wherein the cause of failure includes a separate switching command for which the primary cell conditional switching is not configured, and / or indication information, wherein the indication information is used to indicate that only the primary and secondary cell switching conditions are met or only the primary cell switching conditions are met.

9. The communication method according to claim 1, characterized in that: The dual connectivity conditional handover configuration includes one or more groups of cells, each group of cells includes at least one candidate primary cell and at least one candidate primary secondary cell; The reporting of the first information includes: Reporting first information for at least one group of cells.

10. The communication method according to any one of claims 1 to 9, characterized in that: The reporting of the first information includes: A high-layer signaling is sent, where the high-layer signaling includes the first information.

11. A communication method, characterized in that: include: First information is received, where the first information includes information related to primary cell condition switching and / or primary and secondary cell condition addition / update in a dual connectivity scenario.

12. The communication method according to claim 11, characterized in that: The first information includes one or more of the following: the first moment when the candidate primary cell satisfies the primary cell switching condition and the second moment when the candidate primary and secondary cell satisfies the primary and secondary cell switching condition, the time interval between the first moment and the second moment, the time interval between the third moment when the candidate primary cell and the candidate primary and secondary cell simultaneously satisfy the switching condition and the fourth moment when the conditional switching configuration of the candidate primary cell and the candidate primary and secondary cell is received, the time interval between the first moment and the fourth moment, and the time interval between the second moment and the fourth moment.

13. The communication method according to claim 11, characterized in that: The first information includes signal quality information of a cell corresponding to the other cell when one of the primary cell switching condition and the primary and secondary cell switching condition is met.

14. The communication method according to claim 11, characterized in that: The first information includes whether a primary cell switching condition is satisfied and / or whether a primary and secondary cell switching condition is satisfied in the event of a radio link failure or a handover failure.

15. The communication method according to claim 11, characterized in that: The first information includes the cause of failure in the event of a wireless link failure or a switching failure, wherein the cause of failure includes a separate switching command for not configuring the primary cell condition switching, and / or second indication information, wherein the second indication information is used to indicate that only the primary and secondary cell switching conditions are met or only the primary cell switching conditions are met.

16. A communication device, characterized in that: include: The communication module is used to report first information, where the first information includes information related to primary cell condition switching and / or primary and secondary cell condition addition / update in a dual connectivity scenario.

17. A communication device, characterized in that: include: The communication module is used to receive first information, where the first information includes information related to primary cell condition switching and / or primary and secondary cell condition addition / update in a dual connectivity scenario.

18. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the steps of the communication method according to any one of claims 1 to 15 are executed.

19. A communication device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the processor performs the steps of the communication method according to any one of claims 1 to 10.

20. A communication device, comprising a memory and a processor, wherein the memory stores a computer program that can be run on the processor, characterized in that: When the processor runs the computer program, the processor performs the steps of the communication method according to any one of claims 11 to 15.

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