Wireless communication method, network node and device

Abstract

Provided are a wireless communication method, a network node, and a device, the method comprising: a first node sending first indication information to a terminal device, the first indication information being used to indicate deactivation of a secondary cell group SCG. By instructing the terminal device to deactivate the SCG through the first indication information, when the terminal device has a lower rate requirement, it can not only meet the needs of the user, but also save the wireless resources of the terminal device and improve the utilization efficiency of the resources.

Description

[0001] This application is a divisional application of an application with an application date of July 10, 2020, application number 2020801011153 (international application number PCT / CN2020 / 101354), and invention name “Wireless Communication Method, Network Node and Device”. Technical Field

[0002] The embodiments of the present application relate to the field of communications, and more specifically, to wireless communication methods, network nodes, and devices. Background Art

[0003] Carrier Aggregation (CA) technology allows terminal devices to use multiple component carriers to send and receive data simultaneously, thereby increasing the data transmission rate and improving system efficiency. Dual Connection (DC) scenarios can be supported in New Radio (NR) communication systems.

[0004] However, the configuration of the secondary cell group (SCG) is not considered in the configuration of CA and DC. For example, the prior art only involves how to configure the SCG. When there is less downlink data or uplink data, it may not be necessary to configure the SCG, which wastes wireless resources and reduces resource utilization efficiency. Summary of the invention

[0005] Provided are a wireless communication method, a network node, and a device, which can improve resource utilization efficiency.

[0006] In a first aspect, a wireless communication method is provided, comprising:

[0007] The first node sends first indication information to the terminal device, where the first indication information is used to indicate deactivation of the secondary cell group SCG.

[0008] In a second aspect, a wireless communication method is provided, including:

[0009] The terminal device receives first indication information sent by the first node, where the first indication information is used to instruct the terminal device to deactivate the secondary cell group SCG;

[0010] The terminal device deactivates the SCG based on the first indication information.

[0011] In a third aspect, a wireless communication method is provided, including:

[0012] The master node MN sends second indication information to the terminal device and the secondary node SN respectively, where the second indication information is used to indicate activation of the secondary cell group SCG.

[0013] In a fourth aspect, a wireless communication method is provided, including:

[0014] The secondary node SN receives second indication information sent by the master node MN, where the second indication information is used to indicate activation of the secondary cell group SCG.

[0015] In a fifth aspect, a wireless communication method is provided, including:

[0016] The terminal device receives second indication information sent by the master node MN, where the second indication information is used to indicate activation of the secondary cell group SCG;

[0017] The terminal device activates the SCG based on the second indication information.

[0018] In a sixth aspect, a network node is provided, which is used to execute the method in the first aspect or its implementations. Specifically, the network node includes a functional module used to execute the method in the first aspect or its implementations.

[0019] In a seventh aspect, a terminal device is provided, which is used to execute the method in the second aspect or its respective implementations. Specifically, the terminal device includes a functional module for executing the method in the second aspect or its respective implementations.

[0020] In an eighth aspect, a network node is provided, configured to execute the method in the third aspect or its respective implementations. Specifically, the network node includes a functional module configured to execute the method in the third aspect or its respective implementations.

[0021] In a ninth aspect, a network node is provided, which is used to execute the method in the fourth aspect or its implementations. Specifically, the network node includes a functional module used to execute the method in the fourth aspect or its implementations.

[0022] In a tenth aspect, a terminal device is provided, which is used to execute the method in the second aspect or its respective implementations. Specifically, the terminal device includes a functional module for executing the method in the fifth aspect or its respective implementations.

[0023] In an eleventh aspect, a network node is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect, the third aspect, the fourth aspect or each implementation thereof.

[0024] In a twelfth aspect, a terminal device is provided, comprising a processor and a memory, wherein the memory is used to store a computer program, and the processor is used to call and run the computer program stored in the memory to execute the method in the second aspect, the fifth aspect or each implementation thereof.

[0025] In the twelfth aspect, a chip is provided for implementing the method in any one of the first to fifth aspects or its respective implementations. Specifically, the chip includes: a processor for calling and running a computer program from a memory, so that a device equipped with the chip executes the method in any one of the first to fifth aspects or its respective implementations.

[0026] In a thirteenth aspect, a computer-readable storage medium is provided for storing a computer program, wherein the computer program enables a computer to execute the method in any one of the first to fifth aspects or any of its implementations.

[0027] In a fourteenth aspect, a computer program product is provided, comprising computer program instructions, wherein the computer program instructions enable a computer to execute the method in any one of the first to fifth aspects or any of its implementations.

[0028] In a fifteenth aspect, a computer program is provided, which, when executed on a computer, enables the computer to execute the method in any one of the first to fifth aspects or in each of its implementations.

[0029] Based on the above technical solution, the terminal device is instructed to deactivate the SCG through the first indication information. When the terminal device has a lower rate requirement, it can not only meet the user's needs, but also save the wireless resources of the terminal device and improve the resource utilization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 and Figure 2 It is a schematic block diagram of the system framework provided by this application.

[0031] Figure 3 and Figure 4 They are Figure 2 An example of a specific scenario for EN-DC is shown.

[0032] Figure 5 yes Figure 2 The schematic structural diagram of the load under the EN-DC system is shown.

[0033] Figure 6 This is a schematic structural diagram of DC bearer in a 5GC system provided in an embodiment of the present application.

[0034] Figures 7 to 9 It is a schematic block diagram of the BWP of the terminal device provided in an embodiment of the present application.

[0035] Fig.10 It is a schematic flowchart of the wireless communication method provided in an embodiment of the present application.

[0036] Fig.11 and Fig.12 yes Fig.10 An example flow chart of a wireless communication method is shown.

[0037] Fig.13 This is another schematic flowchart of the wireless communication method provided in an embodiment of the present application.

[0038] Fig.14 and Fig.15 yes Fig.13 An exemplary flow chart of a wireless communication method is shown.

[0039] Fig.16 It is a schematic block diagram of a node provided in an embodiment of the present application.

[0040] Fig.17 It is a schematic block diagram of a terminal device provided in an embodiment of the present application.

[0041] Fig.18 It is a schematic block diagram of a communication device provided in an embodiment of the present application.

[0042] Fig.19 It is a schematic block diagram of the chip provided in the embodiment of the present application. DETAILED DESCRIPTION

[0043] Figure 1 is a schematic diagram of a system 100 according to an embodiment of the present application.

[0044] like Figure 1 As shown, the terminal device 110 is connected to a first network device 130 under a first communication system and a second network device 120 under a second communication system. For example, the first network device 130 is a network device under Long Term Evolution (LTE), and the second network device 120 is a network device under New Radio (NR).

[0045] The first network device 130 and the second network device 120 may include multiple cells.

[0046] It should be understood that Figure 1 This is an example of a communication system in an embodiment of the present application. The embodiment of the present application is not limited to Figure 1 shown.

[0047] As an example, the communication system to which the embodiments of the present application are applicable may include at least a plurality of network devices under the first communication system and / or a plurality of network devices under the second communication system.

[0048] For example, Figure 1 The system 100 shown may include a main network device under a first communication system and at least one auxiliary network device under a second communication system. The at least one auxiliary network device is respectively connected to the one main network device to form multiple connections, and is respectively connected to the terminal device 110 to provide services for it. Specifically, the terminal device 110 can establish a connection through the main network device and the auxiliary network device at the same time.

[0049] Optionally, the connection established between the terminal device 110 and the primary network device is a primary connection, and the connection established between the terminal device 110 and the secondary network device is a secondary connection. The control signaling of the terminal device 110 can be transmitted through the primary connection, and the data of the terminal device 110 can be transmitted through the primary connection and the secondary connection at the same time, or can be transmitted only through the secondary connection.

[0050] As another example, the first communication system and the second communication system in the embodiment of the present application are different, but the specific categories of the first communication system and the second communication system are not limited.

[0051] For example, the first communication system and the second communication system can be various communication systems, such as: Global System of Mobile communication (GSM) system, Code Division Multiple Access (CDMA) system, Wideband Code Division Multiple Access (WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), etc.

[0052] exist Figure 1 In the system 100 shown, the first network device 130 is taken as a main network device, and the second network device 120 is taken as an auxiliary network device as an example.

[0053] The first network device 130 may be an LTE network device, and the second network device 120 may be an NR network device. Alternatively, the first network device 130 may be an NR network device, and the second network device 120 may be an LTE network device. Alternatively, both the first network device 130 and the second network device 120 may be NR network devices. Alternatively, the first network device 130 may be a GSM network device, a CDMA network device, etc., and the second network device 120 may also be a GSM network device, a CDMA network device, etc. Alternatively, the first network device 130 may be a macrocell, and the second network device 120 may be a microcell, a picocell, or a femtocell, etc.

[0054] Optionally, the first network device 130 and the second network device 120 may be any access network devices.

[0055] Optionally, the access network device can be a base station (Base Transceiver Station, BTS) in the Global System of Mobilecommunication (GSM) system or Code Division Multiple Access (CDMA), a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station (Evolutional Node B, eNB or eNodeB) in a Long Term Evolution (LTE) system.

[0056] Optionally, the access network device may also be a next generation radio access network (NG RAN), or a base station (gNB) in a NR system, or a wireless controller in a cloud radio access network (CRAN), or the access network device may be a relay station, an access point, a vehicle-mounted device, a wearable device, or a network device in a future evolved public land mobile network (PLMN).

[0057] Taking the first network device 130 as an LTE network device and the second network device 120 as an NR network device as an example, the technical solution of the embodiment of the present application can be applied to the wide area long-term evolution (Long Term Evolution, LTE) coverage and the island coverage mode of NR. Optionally, a tight interworking working mode between LTE and NR. Among them, the main application scenarios of 5G include: Enhanced Mobile Broadband (Enhance Mobile Broadband, eMBB), Ultra-Reliable and Low Latency Communication (Ultra-Reliable and Low Latency Communication, URLLC), and massive machine type communication (massive machine type of communication, mMTC). Among them, eMBB aims at users to obtain multimedia content, services and data, and its demand is growing rapidly. Since eMBB may be deployed in different scenarios. For example, indoors, urban areas, rural areas, etc., the differences in their capabilities and needs are also relatively large, so they cannot be generalized, and can be analyzed in detail in combination with specific deployment scenarios. Typical applications of URLLC include: industrial automation, power automation, remote medical operations (surgery), traffic safety assurance, etc. Typical features of mMTC include: high connection density, small data volume, latency-insensitive services, low cost of modules and long service life.

[0058] Optionally, the terminal device 110 can be any terminal device. The terminal device can communicate with one or more core networks (Core Network) via a radio access network (Radio Access Network, RAN), and can also be called an access terminal, user equipment (User Equipment, UE), a user unit, a user station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or a user device. For example, it can be a cellular phone, a cordless phone, a Session Initiation Protocol (Session Initiation Protocol, SIP) phone, a Wireless Local Loop (Wireless Local Loop, WLL) station, a Personal Digital Assistant (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, and a terminal device in a 5G network, etc.

[0059] It should be understood that the terms "system" and "network" are often used interchangeably in this article. The term "and / or" in this article is only a description of the association relationship of associated objects, indicating that three relationships can exist. 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 generally indicates that the associated objects before and after are in an "or" relationship.

[0060] Figure 2 is a schematic block diagram of an EN-DC network architecture 200 according to an embodiment of the present invention.

[0061] like Figure 2 As shown, the network architecture 200 can be LTE-NR Dual Connectivity (EN-DC). That is, LTE is used as a master node (MN) and NR is used as a secondary node (SN). In other alternative embodiments, MN is also called MeNB and SN is also called SeNB.

[0062] In the embodiment of the present application, the NR network architecture is added to the LTE architecture to form a network architecture 200, such as Figure 2As shown, the network architecture 200 may include MME / S-GW 211, MME / S-GW 212, 5G base station (gNB) 221, gNB 222, evolved Node B (eNB) 231, and eNB 232. Among them, MME / S-GW 211 is connected to gNB 221 and gNB 222 through an S1-U interface, and MME / S-GW 211 is connected to eNB 231 and eNB 232 through an S1 interface. MME / S-GW 212 is connected to gNB 221 and gNB 222 through an S1-U interface, and MME / S-GW 212 is connected to eNB 231 and eNB 232 through an S1 interface. gNB 221 and gNB 222 are connected through X2-U. eNB 231 and eNB 232 are connected through X2. Similarly, eNB 231 and gNB 221 are connected via X2. gNB 222 and eNB 232 are connected via X2. In other words, eNBs are directly interconnected using the X2 interface, and eNBs are connected to EPC via the S1 interface. The S1 interface supports many-to-many connections between MME / S-GW and eNBs, that is, one eNB can be connected to multiple MME / S-GWs, and multiple eNBs can also be connected to the same MME / S-GW at the same time. Similarly, gNBs are directly interconnected using the X2-U interface, and gNBs are connected to EPC via the S1-U interface. The S1-U interface supports many-to-many connections between MME / S-GW and gNBs, that is, one gNB can be connected to multiple MME / S-GWs, and multiple gNBs can also be connected to the same MME / S-GW at the same time.

[0063] like Figure 2 As shown, in the embodiment of the present application, MME / S-GW 211 and MME / S-GW 212 belong to the Evolved Packet Core (EPC) of the LTE network, and gNB 221, gNB 222, eNB 231 and eNB 232 constitute an Evolved Universal Terrestrial Radio Access Network (E-UTRAN). However, the embodiment of the present application is not limited thereto, for example, the MME / S-GW 211 and MME / S-GW 212 can be replaced by any core network device that communicates with an access network device.

[0064] Optionally, the core network device may be a 5G core network device, such as an Access and Mobility Management Function (AMF), or a Session Management Function (SMF). Optionally, the core network device may also be an Evolved Packet Core (EPC) device of an LTE network, such as a Session Management Function + Core Packet Gateway (SMF + PGW-C) device.

[0065] It should be understood that SMF+PGW-C can simultaneously implement the functions that SMF and PGW-C can implement.

[0066] Optionally, in an embodiment of the present application, AMF may exchange information with SMF, for example, SMF obtains some information on the wireless access network side from AMF.

[0067] Figure 3 and Figure 4 They are Figure 2 An example of a specific scenario for EN-DC is shown.

[0068] like Figure 3 As shown, in one scenario, MN and SN have S1-U connections with the Evolved Packet Core network (EPC), or SN and MN are connected to EPC through S1-U interfaces. For example, MN can be a Long Term Evolution (LTE) Evolved Node B (eNB), and SN is a 5G base station (gNB). S1-C on the control plane terminates at LTE eNB). After the data flow is split in the core network, it is transmitted independently via MN and SN, and SN plays a role in load sharing. This architecture can also be called 3a mode or scenario 3A. In this mode, there are no special requirements for the backhaul between base stations, and the layer 2 protocol layer does not need to be specially configured. There is no load sharing function between base stations, and its peak rate depends entirely on the wireless capabilities of MN and SN themselves; in addition, the core network needs to participate in the switching process, and there is a problem of possible data interruption.

[0069] like Figure 4As shown in the figure, in another scenario, the MN has an S1-U connection with the Evolved Packet Core network (EPC), or the MN is connected to the EPC through the S1-U interface. For example, the MN can be an Evolved Node B (eNB) of Long Term Evolution (LTE), and the SN is a 5G base station (gNB). On the control plane, S1-C terminates at the LTE eNB. All downlink data flows are first transmitted to the MN, and then the MN divides them according to a certain algorithm and ratio, and then sends part of the data to the SN through the X2 interface, and finally sends data to the UE on the MN and SN at the same time. This architecture can also be called mode 3 or scenario 3. In this way, the user obtains downlink data from two systems, which is convenient for realizing load sharing and resource coordination functions, and is also conducive to improving user speed. In addition, the switching process has little impact on the core network, and because there are multiple wireless links, the switching delay is low. Its disadvantages are that it has high requirements for the backhaul between base stations, high requirements for the complexity of the layer 2 protocol, and the backhaul between base stations needs to implement functions such as flow control. In addition, the split bearer mode is only applicable to the downlink direction. In the uplink direction, the data flow is not split and can be transmitted via the MN or SN.

[0070] In addition, in a dual-connection network architecture (such as network architecture 200), the data plane wireless bearer can be independently served by the MN or the SN, or can be served by both the MN and the SN at the same time. When it is served only by the MN, it is called an MCG bearer, that is, a service cell group controlled by the MN; when it is served only by the SN, it is called an SCG bearer, that is, a service cell group controlled by the SN; when it is served by both the MN and the SN at the same time, it is called a split bearer, also known as a forked bearer. Specifically, it can be divided into MCG split bearer and SCG split bearer. The difference between the MCG split bearer and the SCG split bearer is mainly in the different functions of the Packet Data Convergence Protocol (PDCP) layer and the different keys of the PDCP layer.

[0071] Figure 5 yes Figure 2 The schematic structural diagram of the load under the EN-DC system is shown.

[0072] like Figure 5As shown, the bearers of the terminal device under DC may include: MCG bearer with termination point at MN (MN terminated MCG bearer), forked bearer with termination point at MN (MN terminated split bearer), SCG bearer with termination point at MN (MN terminated SCG bearer), MCG bearer with termination point at SN (SN terminatedMCG bearer), forked bearer with termination point at SN (SN terminated split bearer) and SCG bearer with termination point at SN (SN terminated SCG bearer).

[0073] In other words, the bearer can be divided into a bearer with an endpoint at the MN or SN based on whether the Packet Data Convergence Protocol (PDCP) the bearer passes through is located at the MN or SN, and can also be divided into an MCG bearer or an SCG bearer based on the Radio Link Control (RLC) the bearer passes through.

[0074] Among them, the MCG bearer, SCG bearer and split bearer served by the MN and / or SN pass through the corresponding Evolved Universal Terrestrial Radio Access (E-UTRA) Radio Link Control (RLC) or New Radio (NR) RLC layer to reach the corresponding E-UTRA or NR Media Access Control (MAC) layer. Optionally, the split bearer with the termination point at the MN and the split bearer with the termination point at the SN can be collectively referred to as a split bearer. Optionally, the split bearer can also be called a split bearer.

[0075] It should be understood that each sublayer can send data to the designated layer of the receiving end according to the different data of the protocol data unit. The data that enters each sublayer without being processed is called the service data unit (SDU), and the data in a specific format after being processed by the sublayer is called the protocol data unit (PDU). SDU is an information unit transmitted from the high-level protocol to the low-level protocol. The original data of SDU is the PDU of the upper layer of the protocol. In other words, the PDU formed by this layer is the SDU of the next layer.

[0076] For example, each logical channel of each terminal device has an RLC entity. The data received by the RLC entity from the PDCP layer or sent to the PDCP layer can be called RLC SDU (or PDCP PDU). The data received by the RLC entity from the MAC layer or sent to the MAC layer can be called RLC PDU (or MAC SDU).

[0077] For example, in the embodiment of the present application, the RLC layer is located between the PDCP layer and the MAC layer, and the RLC layer can communicate with the PDCP layer through a service access point (SAP) and communicate with the MAC layer through a logical channel. However, the embodiment of the present application is not limited thereto.

[0078] It should be noted that Figures 1 to 5 This is only an example of the present application and should not be construed as limiting the present application.

[0079] For example, Figure 2 The network architecture 200 shown is only an exemplary description of a dual-connection (DC) network architecture, and the embodiments of the present invention are not limited thereto. For example, in other alternative embodiments, the network architecture 200 may also be simply deformed. For example, as an example, the MN and SN may not be connected to the EPC core network, but to the 5GC core network, that is, the DC network framework under the 5GC core network. Exemplarily, the DC network architecture includes but is not limited to: NE-DC, 5GC-EN-DC, and NR DC. In NE-DC, NR acts as an MN node, eLTE acts as an SN node, and MN and SN are respectively connected to the 5GC core network. In 5GC-EN-DC, eLTE acts as an MN node, NR acts as an SN node, and MN and SN are respectively connected to the 5GC core network. In NR DC, NR acts as an MN node, NR acts as an SN node, and MN and SN are respectively connected to the 5GC core network.

[0080] Figure 6 It is a schematic block diagram of DC bearer under the 5GC core network provided in an embodiment of the present application.

[0081] like Figure 6 As shown, Figure 5As shown, the bearer of the terminal device under DC may also include: MCG bearer with termination point at MN (MN terminated MCG bearer), fork bearer with termination point at MN (MN terminated splitbearer), SCG bearer with termination point at MN (MN terminated SCG bearer), MCG bearer with termination point at SN (SNterminated MCG bearer), fork bearer with termination point at SN (SN terminated split bearer) and SCG bearer with termination point at SN (SN terminated SCG bearer).

[0082] Among them, MN and SN are connected to the 5GC core network respectively, MN is connected to SN through the Xn interface, MN and SN can respectively receive the quality of service (QoS) flow sent by the 5GC core network, and the QoS flow can be carried on the corresponding bearer after passing the service data adaptation protocol (SDAP). The MCG bearer, SCG bearer and split bearer served by MN and / or SN pass through the corresponding MN RLC layer or SNRLC layer and reach the corresponding MN MAC layer or NR MAC layer.

[0083] In the 5G communication system, the maximum channel bandwidth can be 400MHZ (wideband carrier), which is much larger than the maximum 20M bandwidth of LTE. If the UE keeps working on the wideband carrier, the power consumption of the UE increases. The power consumption of the UE can be optimized through the bandwidth component (BandWidth Part, BWP). That is, the RF bandwidth of the UE can be adjusted according to the actual throughput of the UE. Another purpose of BWP is to trigger the coexistence of multiple air interface parameter sets (Numerology) in a cell.

[0084] Figures 7 to 9 It is a schematic block diagram of the BWP of the terminal device of an embodiment of the present application.

[0085] For example, Figure 7 As shown, if the UE rate is low, a portion of the carrier bandwidth, such as BWP1, may be configured for the UE. Figure 8 As shown in FIG. 1 , if the UE has a higher rate requirement, a larger BWP can be configured for the UE. For example, BWP2 is larger than BWP1. For another example, Fig. 9As shown, if the UE supports a high rate or works in CA mode, multiple BWPs may be configured, such as BWP1 and BWP2. Optionally, BWP1 and BWP2 may correspond to air interface parameter set 1 and air interface parameter set 2, respectively.

[0086] A maximum of 4 UL BWPs and a maximum of 4 DL BWPs can be configured for a UE through RRC dedicated signaling, but only one DL BWP and UL BWP can be activated at the same time. In the RRC dedicated signaling, the first activated BWP among the configured BWPs can be indicated. At the same time, when the UE is in the connected state, it can also switch between different BWPs through DCI. When a carrier in an inactive state enters the activated state, the first activated BWP is the first activated BWP configured in the RRC. The configuration parameters of each BWP include at least one of the following:

[0087] Subcarrier Spacing;

[0088] cyclicPrefix;

[0089] The first PRB of BWP and the number of consecutive PRBs (locationAndBandwidth).

[0090] BWP Identifier (bwp-Id); and

[0091] BWP common configuration parameters (bwp-Common) and dedicated configuration parameters (bwp-Dedicated).

[0092] When the UE is monitoring the Radio Link Monitor (RLM) process, it only executes on the activated BWP. The inactivated BWP does not need to be operated, and when switching between different BWPs, there is no need to reset the RLM-related timers and counters. For Radio Resource Management (RRM) measurements, no matter which activated BWP the UE sends or receives data on, it does not affect the RRM measurements. For Channel Quality Indicator (CQI) measurements, the UE can only execute on the activated BWP.

[0093] When a carrier is deactivated and then activated through MAC CE, the initial first activated BWP may be the BWP corresponding to the first activated BWP id in the RRC signaling.

[0094] Exemplarily, the value of BWP id in RRC signaling can be 0 to 4, and 0 is the default initial BWP.

[0095] In DCI, the BWP indicator is 2 bits. If the number of configured BWPs is less than or equal to 3, the BWP indicator can be 1, 2 or 3, and BWP indicator 1, 2 and 3 correspond to BWP id 1, 2 and 3 respectively. If the number of BWPs is 4, the BWP indicator can be 0, 1, 2 and 3. Optionally, BWP indicator 0, 1, 2 and 3 correspond to the BWPs configured according to the sequential index. Optionally, use consecutive BWP ids when configuring BWPs.

[0096] The following is an exemplary description of the correspondence between the value of the BWP indication field and the BWP in conjunction with Table 1.

[0097] Table 1

[0098] As shown in Table 1, the value of the BWP indication field may be 2 bits, wherein 00 may be used to indicate the first BWP. Of course, in other alternative embodiments, 00 may also transform the corresponding relationship in Table 1, and the embodiment of the present application does not specifically limit this.

[0099] Fig.10 3 is a schematic flow chart of a wireless communication method 310 provided in an embodiment of the present application. The method 310 may be interactively executed by a first node and a terminal device. The first node may be a master node (MN) or a secondary node (SN). For example, the first node may be Figure 2 Any one of the 5G base stations (gNB) 221, gNB 222, evolved Node B (eNB) 231, and eNB 232 shown in FIG. The terminal device may be as follows Figure 1 The terminal equipment shown.

[0100] like Fig.10 As shown, the method 310 includes some or all of the following contents:

[0101] S311, the first node sends first indication information to the terminal device, and the first indication information is used to indicate deactivation of the secondary cell group SCG.

[0102] S312, the terminal device deactivates the SCG based on the first indication information.

[0103] In other words, the terminal device receives the first indication information, and then the terminal device may deactivate the SCG based on the first indication information. Optionally, deactivating the SCG may also be referred to as suspending or temporarily suspending the SCG, or may be referred to as dormancy SCG. Optionally, a dormancy SCG may put all cells in the SCG in a dormancy state. Optionally, the terminal device may not monitor the PDCCH in the dormancy cell, and may not send or receive data. Optionally, the terminal device may perform RRM, CSI measurement, beam management, etc. in the dormancy cell.

[0104] By instructing the terminal device to deactivate the SCG through the first indication information, when the terminal device has a lower rate requirement, it can not only meet the user's needs but also save the wireless resources of the terminal device and improve the resource utilization efficiency.

[0105] In some embodiments of the present application, the method 310 may further include:

[0106] The first node obtains the status of data of the secondary node SN.

[0107] For example, after the first node obtains the status of the data of the SN, it can determine whether the SCG needs to be deactivated based on the status of the data of the SN, and then send the first indication information to the terminal device when it is determined that the SCG needs to be deactivated.

[0108] In some embodiments of the present application, the state of the data of the SN includes an active state and an inactive state. Optionally, the information used to determine the state of the data of the SN may be indication information indicating that the data state of the SN is an active state or an inactive state, or may not be indication information, and the present application does not make specific limitations on this.

[0109] The active state can be understood as the SN having data to be sent to the terminal device. Accordingly, a state other than the active state can become the active state.

[0110] For example, the inactive state may refer to at least one of the following: no downlink data arrives at the bearer whose termination point is at the secondary node SN; no downlink data arrives at the SN from the user plane function UPF; for the SCG bearer whose termination point is at the primary node MN, no downlink data is transferred from the MN to the SN through the Xn interface and / or the X2 interface; the bearer with service data arriving does not need to use the radio resources of the SCG. Correspondingly, the active state may refer to at least one of the following: downlink data arrives at the bearer whose termination point is at the secondary node SN; downlink data arrives at the SN from the user plane function UPF; for the SCG bearer whose termination point is at the primary node MN, downlink data is transferred from the MN to the SN through the Xn interface and / or the X2 interface; the bearer with service data arriving needs to use the radio resources of the SCG. Optionally, the SCG radio resources include at least one of the following: physical layer resources; RLC layer resources, MAC layer resources and physical layer resources; service data adaptation protocol (SDAP) layer resources, packet data convergence protocol (PDCP) layer resources, RLC layer resources, MAC layer resources and physical layer resources.

[0111] For another example, the inactive state refers to at least one of the following: the SCG bearer with the termination point at SN has no service to send; the SCG bearer with the termination point at MN has no service data to send; the forked bearer with the termination point at MN has no service data to send; the forked bearer with the termination point at SN has no service data to send. Correspondingly, the active state may refer to at least one of the following: the SCG bearer with the termination point at SN has service to send; the SCG bearer with the termination point at MN has service data to send; the forked bearer with the termination point at MN has service data to send; the forked bearer with the termination point at SN has service data to send.

[0112] For example, the inactive state refers to at least one of the following: the forked bearer with the termination point at MN, the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN, and the SCG bearer with the termination point at SN have no business data to send; the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN, and the SCG bearer with the termination point at SN have no business data to send; the SCG bearer with the termination point at MN and the SCG bearer with the termination point at SN have no business data to send. Correspondingly, the active state refers to at least one of the following: the forked bearer with the termination point at MN, the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN and the SCG bearer with the termination point at SN all have business data to send; the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN and the SCG bearer with the termination point at SN all have business data to send; the SCG bearer with the termination point at MN and the SCG bearer with the termination point at SN both have business data to send.

[0113] Of course, the above-mentioned true inactive state and active state are merely examples of the present application and should not be construed as limitations on the present application.

[0114] The following is an exemplary description of the bearer of the terminal device or the status of the cell within the SCG after deactivating the SCG.

[0115] In some embodiments of the present application, the bearer of the terminal device is at least one of the following:

[0116] The replication function of the packet data convergence protocol PDCP based on dual-connection DC is deactivated, and the main branch is the MN branch; for the forked bearer with the termination point at SN or the forked bearer with the termination point at MN, the SCG branch is deactivated and the MN branch is the main branch; the forked bearer with the termination point at SN is deactivated; the forked bearer with the termination point at MN is deactivated; the SCG bearer with the termination point at SN is deactivated; the MCG bearer with the termination point at SN remains activated; the SCG bearer with the termination point at MN is deactivated.

[0117] For example, if the SCG is deactivated, the bearer of the terminal device may be in at least one of the following:

[0118] The replication function of the packet data convergence protocol PDCP based on dual-connection DC is deactivated, and the main branch is the MN branch; for the forked bearer with the termination point at SN or the forked bearer with the termination point at MN, the SCG branch is deactivated and the MN branch is the main branch; the forked bearer with the termination point at SN is deactivated; the forked bearer with the termination point at MN is deactivated; the SCG bearer with the termination point at SN is deactivated; the MCG bearer with the termination point at SN remains activated; the SCG bearer with the termination point at MN is deactivated.

[0119] In other words, the terminal device can deactivate the SCG by deactivating the bearer of the terminal device.

[0120] By improving the service status of all bearers when deactivating SCG, the operation of deactivating SCG on the terminal device can be realized.

[0121] In some embodiments of the present application, the status of the serving cell in the SCG is at least one of the following:

[0122] Deactivated state; activated state or deactivated state, and the activated BWP of all activated service cells in the SCG is a dormant BWP; the RRC connection between the terminal device and the secondary node is in a deactivated state, and the RRC connection between the terminal device and the primary node is in a connected state.

[0123] For example, if the SCG is deactivated, the status of the serving cell in the SCG is at least one of the following:

[0124] Deactivated state; activated state or deactivated state, and the activated BWP of all activated service cells in the SCG is a dormant BWP; the RRC connection between the terminal device and the secondary node is in a deactivated state, and the RRC connection between the terminal device and the primary node is in a connected state.

[0125] In other words, the terminal device may deactivate the SCG by performing at least one of the following: deactivating a serving cell in the SCG, screening a serving cell in an activated state, and deactivating an RRC connection between the terminal device and a secondary node.

[0126] In some embodiments of the present application, the method 310 may further include:

[0127] The first node sends a radio resource management RRM measurement configuration to the terminal device, where the RRM measurement configuration is used by the terminal device to perform RRM measurement.

[0128] In other words, the terminal device receives the RRM measurement configuration sent by the first node.

[0129] Exemplarily, the RRM measurement configuration includes at least one of the following: measurement configuration for inter-frequency; measurement configuration for intra-frequency; measurement configuration for idle state; measurement configuration for quickly establishing the SCG and serving cell; and measurement configuration when the SCG is deactivated. Optionally, the RRM measurement configuration is carried in a system message block SIB and / or dedicated signaling.

[0130] For example, the terminal device performs RRM measurement; the terminal device sends the measurement result of the RRM measurement to the master node.

[0131] In other words, the terminal device can perform measurement based on the RRM measurement configuration configured by the MN; the terminal device can also perform measurement based on the RRM measurement configuration configured by the MN and the SN; the terminal device can also perform measurement based on the RRM measurement configuration configured by the MN, for example, based on the inter-frequency and intra-frequency configurations in the MN-SIB, such as the configuration in SIB2 / 4; the terminal device can also perform measurement based on the measurement configuration for idle measurement in the MN-SIB, for example, the measurement configuration for quickly establishing SCG and SCell; the terminal can also perform measurement based on the measurement configuration configured by the MN dedicated signaling for suspending SCG.

[0132] In some embodiments of the present application, the first indication information is carried on at least one of the following: PDCCH, media access control element (MAC CE), signaling radio bearer SRB1, and signaling radio bearer SRB3. For example, the first indication information can be carried on MN SRB1 or SN SRB3, or on MN / SN PDCCH / MAC CE.

[0133] In some embodiments of the present application, the S311 may include:

[0134] If the data state of the secondary node SN is the inactive state, the first node sends the first indication information to the terminal device.

[0135] For example, after the MN receives the information sent by the SN for determining the status of the data of the SN, the MN determines whether to send the first indication information to the terminal device based on the status of the data of the SN. For example, if the status of the data of the SN is the inactive state mentioned above, the first indication information is sent to the terminal device.

[0136] For another example, the SN may directly determine the status of the data of the SN, and then, when it is determined that the status of the data of the SN is an inactive state, send the first indication information to the terminal device.

[0137] In some embodiments of the present application, the method 310 may further include:

[0138] The first node sends configuration information for deactivating the SCG to the terminal device.

[0139] For example, the MN or SN sends configuration information for deactivating the SCG to the terminal device. Optionally, the configuration information may include configuration information of the bearer and / or configuration information of the service cell in the SCG. For example, the configuration information of the bearer may include information for indicating at least one of the following configurations: the replication function of the packet data convergence protocol PDCP based on dual-connection DC is deactivated, and the main branch is the MN branch; for the forked bearer with the termination point at the SN or the forked bearer with the termination point at the MN, the branch of the SCG is deactivated and the branch of the MN is the main branch; the forked bearer with the termination point at the SN is deactivated; the forked bearer with the termination point at the MN is deactivated; the SCG bearer with the termination point at the SN is deactivated; the MCG bearer with the termination point at the SN remains activated; and the SCG bearer with the termination point at the MN is deactivated. For another example, the configuration information of the service cell in the SCG may include information for indicating at least one of the following configurations: deactivating the service cell in the SCG; activating or deactivating the service cell in the SCG, and the activated BWP of all activated service cells in the SCG is a dormant BWP; and the RRC connection between the terminal device and the secondary node is in a deactivated state, and the RRC connection between the terminal device and the primary node is in a connected state.

[0140] In some embodiments of the present application, the first node is a master node MN.

[0141] Fig.11 It is an exemplary flowchart of the wireless communication method provided in an embodiment of the present application.

[0142] like Fig.11The MN and SN are respectively connected to the 5G Core Network (5G Core Network, 5GC), and the MN sends a first indication message to the terminal device. Optionally, the MN may send a first notification message to the SN, and the first notification message is used to notify the MN that it has indicated or is about to instruct the terminal device to deactivate the SCG. In other words, the SN receives the first notification message sent by the MN. Optionally, the MN receives information sent by the SN for determining the status of the data of the SN. Optionally, the information for determining the status of the data of the SN can be used by the MN to determine whether the status of the data of the SN is an active state or an inactive state, so that the MN sends the first indication message to the terminal device after determining that the status of the data of the SN is an inactive state.

[0143] In some embodiments of the present application, the first node is a secondary node SN.

[0144] Fig.12 It is an exemplary flowchart of the wireless communication method provided in an embodiment of the present application.

[0145] like Fig.12 The MN and the SN are respectively connected to the 5G Core Network (5GC), and the SN sends a first indication message to the terminal device. Optionally, the SN may send a second notification message to the MN, and the second notification message is used to notify the SN that it has indicated or is about to instruct the terminal device to deactivate the SCG. In other words, the MN receives the second notification message sent by the SN. Optionally, the MN receives information sent by the SN for determining the status of the data of the SN. Optionally, the information for determining the status of the data of the SN can be used by the MN to determine whether the status of the data of the SN is an active state or an inactive state.

[0146] Combined with the above Figures 10 to 12 The wireless communication method according to the embodiment of the present application is described in detail from the perspective of deactivating the SCG. Figures 13 to 15 , describes the wireless communication method according to an embodiment of the present application from the perspective of activating SCG.

[0147] Fig.13 3 is a schematic flow chart of a wireless communication method 320 provided in an embodiment of the present application. The method 320 may be interactively executed by a master node (MN) and a terminal device, or the method 320 may be interactively executed by a MN and a SN. For example, the MN may be Figure 2 The SN may be a gNB 221 or a gNB 222 as shown in FIG. Figure 2 The terminal device may be eNB231 or eNB 232 as shown. Figure 1The terminal device shown.

[0148] like Fig.13 As shown, the method 320 includes some or all of the following contents:

[0149] S321, the master node MN sends second indication information to the terminal device and the secondary node SN respectively, where the second indication information is used to indicate activation of the secondary cell group SCG.

[0150] In other words, the terminal device and the SN activate the SCG through the second indication information. Optionally, deactivating the SCG may also be referred to as suspending the SCG or temporarily suspending the SCG.

[0151] For example, the SN receives the second indication information sent by the MN through an Xn interface or an X2 interface. Optionally, the second indication information includes identification information of a target primary and secondary cell group cell (PSCell) and information for indicating the activation state of the secondary cell. Optionally, the information for indicating the activation state of the secondary cell is used to indicate that the activation state of the secondary cell is an activated state or a deactivated state, and / or the information for indicating the activation state of the secondary cell is used to indicate the identification of the activated BWP of the secondary cell. Optionally, the second indication information includes a measurement result reported by the terminal device, and the measurement result is used by the MN or the secondary node SN to determine the activation state of the secondary cell SCell and / or the target primary and secondary cell group cell PSCell. Of course, the second indication information received by the SN may include identification information of the target primary and secondary cell group cell (PSCell), information for indicating the activation state of the secondary cell, and the measurement result at the same time. Optionally, the SN may also send information for indicating the target primary and secondary cell group cell PSCell to the MN. For example, the SN determines the target PSCell based on the measurement result, and may send information indicating the target PSCell to the MN.

[0152] By instructing the terminal device to activate the SCG through the second indication information, when the terminal device has an increased speed requirement, the user's needs can be met, which is equivalent to being able to dynamically use the resources of the SCG, thereby improving the resource utilization efficiency of the terminal device.

[0153] In some embodiments of the present application, the S321 may include:

[0154] The MN receives information sent by the secondary node SN for determining the status of the data of the SN; if the status of the data of the SN is active, the MN sends the second indication information to the terminal device.

[0155] In other words, the SN sends information for determining the status of the data of the SN to the MN; if the status of the data of the SN is in an active state, the SN receives the second indication information sent by the MN.

[0156] In some embodiments of the present application, the state of the data of the SN includes an active state and an inactive state. Optionally, the information used to determine the state of the data of the SN may be indication information indicating that the data state of the SN is an active state or an inactive state, or may not be indication information, and the present application does not make specific limitations on this.

[0157] The active state can be understood as the SN having data to be sent to the terminal device. Accordingly, a state other than the active state can become the active state.

[0158] For example, the inactive state may refer to at least one of the following: no downlink data arrives at the bearer whose termination point is at the secondary node SN; no downlink data arrives at the SN from the user plane function UPF; for the SCG bearer whose termination point is at the primary node MN, no downlink data is transferred from the MN to the SN through the Xn interface and / or the X2 interface; the bearer with service data arriving does not need to use the radio resources of the SCG. Correspondingly, the active state may refer to at least one of the following: downlink data arrives at the bearer whose termination point is at the secondary node SN; downlink data arrives at the SN from the user plane function UPF; for the SCG bearer whose termination point is at the primary node MN, downlink data is transferred from the MN to the SN through the Xn interface and / or the X2 interface; the bearer with service data arriving needs to use the radio resources of the SCG. Optionally, the SCG radio resources include at least one of the following: physical layer resources; RLC layer resources, MAC layer resources and physical layer resources; service data adaptation protocol (SDAP) layer resources, packet data convergence protocol (PDCP) layer resources, RLC layer resources, MAC layer resources and physical layer resources.

[0159] For another example, the inactive state refers to at least one of the following: the SCG bearer with the termination point at SN has no service to send; the SCG bearer with the termination point at MN has no service data to send; the forked bearer with the termination point at MN has no service data to send; the forked bearer with the termination point at SN has no service data to send. Correspondingly, the active state may refer to at least one of the following: the SCG bearer with the termination point at SN has service to send; the SCG bearer with the termination point at MN has service data to send; the forked bearer with the termination point at MN has service data to send; the forked bearer with the termination point at SN has service data to send.

[0160] For example, the inactive state refers to at least one of the following: the forked bearer with the termination point at MN, the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN, and the SCG bearer with the termination point at SN have no business data to send; the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN, and the SCG bearer with the termination point at SN have no business data to send; the SCG bearer with the termination point at MN and the SCG bearer with the termination point at SN have no business data to send. Correspondingly, the active state refers to at least one of the following: the forked bearer with the termination point at MN, the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN and the SCG bearer with the termination point at SN all have business data to send; the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN and the SCG bearer with the termination point at SN all have business data to send; the SCG bearer with the termination point at MN and the SCG bearer with the termination point at SN both have business data to send.

[0161] Of course, the above-mentioned true inactive state and active state are merely examples of the present application and should not be construed as limitations on the present application.

[0162] In some embodiments of the present application, the method 320 may further include:

[0163] The MN receives third indication information sent by the terminal device, where the third indication information is used to indicate that the SCG needs to be activated.

[0164] In other words, the terminal device sends a third indication message to the MN, where the third indication message is used to indicate that the SCG needs to be activated.

[0165] For example, if the uplink data arrives at the bearer of the SN and / or the bearer to which the uplink data arrives needs to use the wireless resources of the SCG, the MN receives the third indication information sent by the terminal device. In other words, if the uplink data arrives at the bearer of the SN and / or the bearer to which the uplink data arrives needs to use the wireless resources of the SCG, the MN receives the third indication information sent by the terminal device. Optionally, the third indication information includes a bearer identifier and / or information used to indicate that the uplink data arrives at the SN. Optionally, the third indication information is carried on a radio resource control RRC signaling or a media access control element MAC CE. Optionally, the third indication information includes a measurement result reported by the terminal device, and the measurement result is used by the MN or the secondary node SN to determine the activation state of the secondary cell SCell and / or the target primary and secondary cell group cell PSCell.

[0166] Of course, the measurement result may not be carried in the third indication information, but may be carried in other information and reported to the MN or SN, and this application does not make any specific limitation on this.

[0167] In some embodiments of the present application, the MN sends the second indication information to the SN via an Xn interface or an X2 interface. Optionally, the second indication information includes identification information of the target primary and secondary cell group cell PSCell and information used to indicate the activation state of the secondary cell. Optionally, the information used to indicate the activation state of the secondary cell is used to indicate that the activation state of the secondary cell is an activated state or a deactivated state, and / or the information used to indicate the activation state of the secondary cell is used to indicate the identification of the activated BWP of the secondary cell. Optionally, the second indication information includes the measurement result reported by the terminal device, and the measurement result is used by the MN or the secondary node SN to determine the activation state of the secondary cell SCell and / or the target primary and secondary cell group cell PSCell.

[0168] Exemplarily, the method 320 may further include:

[0169] The MN receives information sent by the SN to indicate the target primary and secondary cell group cell PSCell.

[0170] The second indication information sent by the MN to the terminal device is described below.

[0171] In some embodiments of the present application, the master node MN sends the second indication information to the terminal device, and the second indication information is carried on at least one of the following: radio resource control RRC signaling, physical downlink control PDCCH, and media access control element MAC CE. In other words, activating the SCG through PDCCH or MAC CE is equivalent to triggering the random access process of other cells through PDCCH or MAC CE. Optionally, the second indication information includes at least one of the following information: a key for calculating the SCG; a random access channel RACH resource for the terminal device to initiate a random access process to the SCG; a cell index of the service cell where the PSCell or RACH resource is located; information for indicating the initial state of the service cell in the SCG; information for indicating the initial state cell of the dormant broadband component BWP in the service cell in the SCG. For example, the information for indicating the activation state of the service cell in the SCG includes at least one first bit, and the at least one first bit is used to indicate that the initial state of at least one service cell in the SCG is an activated state or a deactivated state. For example, the information for indicating the activation state cell of the dormant broadband component BWP in the service cell in the SCG includes at least one second bit, and the at least one second bit is used to indicate that the initial state of the dormant BWP of at least one service cell in the SCG is an activated state or a deactivated state. Optionally, the terminal device may perform a RACH process on the target PSCell indicated by the second indication information. For example, the terminal device may calculate the key of the SCG and restore the SCG based on the calculated key.

[0172] For example, the second indication information may also be used to indicate that the SCG of the terminal device does not need to be changed, or the second indication information may also be used to indicate that the original SN of the terminal device does not need to be changed.

[0173] Fig.14 This is an example of a wireless communication method provided in an embodiment of the present application.

[0174] like Fig.14 As shown, the SN sends information for determining the status of the data of the SN to the MN so that the MN determines when to send the second indication information to the SN and the terminal device. When the terminal device has uplink data that needs to reach the SN, the terminal device may also send the third indication information to the MN to indicate that the terminal device needs to activate the SCG.

[0175] In some other embodiments of the present application, the MN sends SCG configuration information to the terminal device, and the SCG configuration information includes the second indication information. Optionally, the SCG configuration information is carried on the radio resource control RRC signaling. For example, through the RRC dedicated signaling, the SN can be replaced during the activation of the SCG, and accordingly, the process of replacing the SN can be simplified, the activation efficiency can be improved, and the utilization of resources can be improved. For example, the RRC signaling is an RRC reconfiguration message or an RRC recovery message. Optionally, the MN sends an add request message to the target node through an Xn interface or an X2 interface, and the add request message is used to request that the target node be added as a secondary node of the terminal device. For example, if the MN determines that the secondary node of the terminal device needs to be changed from the original node to the target node, the MN sends an add request message to the target node through the Xn interface or the X2 interface. Exemplarily, the add request message includes the identification information of the target primary and secondary cell group cell PSCell and information for indicating the activation status of the secondary cell. For example, the information for indicating the activation state of the secondary cell is used to indicate whether the activation state of the secondary cell is an activated state or a deactivated state, and / or the information for indicating the activation state of the secondary cell is used to indicate the identifier of the activated BWP of the secondary cell. Exemplarily, the add request information includes the measurement result reported by the terminal device, and the measurement result is used by the target node to determine the activation state of the secondary cell SCell and / or the target primary and secondary cell group cell PSCell. Of course, the add request information may also include the identification information of the target PSCell, the information for indicating the activation state of the secondary cell, and the measurement result. Optionally, the MN sends a release request message to the source node, and the release request message is used to request the source node to release the resources of the SCG. In other words, the SN receives the release request message sent by the MN.

[0176] For example, the second indication information may also be used to indicate a change in the SCG of the terminal device, or the second indication information may also be used to indicate a change in the original SN of the terminal device.

[0177] Fig.15 This is an example of a wireless communication method provided in an embodiment of the present application.

[0178] like Fig.15As shown, the original SN (source SN, S-SN) sends information for determining the status of the data of the S-SN to the MN, so that the MN determines when to send the second indication information to the S-SN and the terminal device. When the terminal device has uplink data that needs to reach the SN (such as S-SN), the terminal device may also send the third indication information to the MN to indicate that the terminal device needs to activate the SCG. In addition, when the SN of the terminal device needs to be changed, the MN may also send an add request message to the target SN (target SN, T-SN).

[0179] It should be understood that the steps in method 320 may refer to the corresponding steps in method 310, and may even be combined with method 320 and method 310. For the sake of brevity, they will not be described in detail here.

[0180] The preferred embodiments of the present application are described in detail above in conjunction with the accompanying drawings. However, the present application is not limited to the specific details in the above embodiments. Within the technical concept of the present application, the technical solution of the present application can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present application. For example, the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present application will not further explain various possible combinations. For another example, the various different embodiments of the present application can also be arbitrarily combined, as long as they do not violate the ideas of the present application, they should also be regarded as the contents disclosed in the present application.

[0181] It should be understood that in the various method 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.

[0182] Combination of the above Figures 10 to 15 , describes in detail the method embodiment of the present application, and the following is combined with Figures 16 to 19 , describe in detail the device embodiments of the present application.

[0183] Fig.16 It is a schematic block diagram of a network node 400 according to an embodiment of the present application. It should be understood that the network node 400 may be the first node mentioned above, or the MN mentioned above, or the SN mentioned above.

[0184] Combine the following Fig.16 A network node used as the first node will be described.

[0185] like Fig.16 As shown, the network node 400 may include:

[0186] The communication unit 410 is used to send first indication information to the terminal device, where the first indication information is used to indicate deactivation of the secondary cell group SCG.

[0187] In some embodiments of the present application, the communication unit 410 is further used to: obtain the status of data of the secondary node SN.

[0188] In some embodiments of the present application, the state of the data of the SN includes an active state and an inactive state.

[0189] In some embodiments of the present application, the inactive state refers to at least one of the following:

[0190] No downlink data arrives for the bearer whose termination point is at the secondary node SN; no downlink data arrives from the user plane function UPF to the SN; for the SCG bearer whose termination point is at the primary node MN, no downlink data is transmitted from the MN to the SN through the Xn interface and / or the X2 interface; the bearer with service data arriving does not need to use the wireless resources of the SCG.

[0191] In some embodiments of the present application, the active state refers to at least one of the following:

[0192] Downlink data arrives at the bearer with the termination point at the secondary node SN; downlink data arrives at the SN from the user plane function UPF; for the SCG bearer with the termination point at the primary node MN, downlink data is transmitted from the MN to the SN via the Xn interface and / or the X2 interface; the bearer with service data arriving needs to use the wireless resources of the SCG.

[0193] In some embodiments of the present application, the SCG wireless resource includes at least one of the following:

[0194] Physical layer resources; Radio Link Layer Control RLC layer resources, Media Access Control MAC layer resources and physical layer resources; Service Data Adaptation Protocol SDAP layer resources, Packet Data Convergence Protocol PDCP layer resources, RLC layer resources, MAC layer resources and physical layer resources.

[0195] In some embodiments of the present application, the inactive state refers to at least one of the following:

[0196] The SCG bearer with the termination point at SN has no service to send; the SCG bearer with the termination point at MN has no service data to send; the forked bearer with the termination point at MN has no service data to send; the forked bearer with the termination point at SN has no service data to send.

[0197] In some embodiments of the present application, the active state refers to at least one of the following:

[0198] The SCG bearer with the termination point at SN has services to send; the SCG bearer with the termination point at MN has service data to send; the fork bearer with the termination point at MN has service data to send; the fork bearer with the termination point at SN has service data to send.

[0199] In some embodiments of the present application, the inactive state refers to at least one of the following:

[0200] The forked bearer with the termination point at MN, the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN, and the SCG bearer with the termination point at SN have no business data to send; the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN, and the SCG bearer with the termination point at SN have no business data to send; the SCG bearer with the termination point at MN and the SCG bearer with the termination point at SN have no business data to send.

[0201] In some embodiments of the present application, the active state refers to at least one of the following:

[0202] The forked bearer with the termination point at MN, the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN and the SCG bearer with the termination point at SN all have business data to send; the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN and the SCG bearer with the termination point at SN all have business data to send; the SCG bearer with the termination point at MN and the SCG bearer with the termination point at SN all have business data to send.

[0203] In some embodiments of the present application, the bearer of the terminal device is at least one of the following:

[0204] The replication function of the packet data convergence protocol PDCP based on dual-connection DC is deactivated, and the main branch is the MN branch; for the forked bearer with the termination point at SN or the forked bearer with the termination point at MN, the SCG branch is deactivated and the MN branch is the main branch; the forked bearer with the termination point at SN is deactivated; the forked bearer with the termination point at MN is deactivated; the SCG bearer with the termination point at SN is deactivated; the MCG bearer with the termination point at SN remains activated; the SCG bearer with the termination point at MN is deactivated.

[0205] In some embodiments of the present application, the status of the serving cell in the SCG is at least one of the following:

[0206] Deactivated state; activated state or deactivated state, and the activated BWP of all activated service cells in the SCG is a dormant BWP; the RRC connection between the terminal device and the secondary node is in a deactivated state, and the RRC connection between the terminal device and the primary node is in a connected state.

[0207] In some embodiments of the present application, the communication unit 410 is further configured to:

[0208] A radio resource management RRM measurement configuration is sent to the terminal device, where the RRM measurement configuration is used by the terminal device to perform RRM measurement.

[0209] In some embodiments of the present application, the RRM measurement configuration includes at least one of the following:

[0210] Used for inter-frequency measurement configuration; used for intra-frequency measurement configuration; used for idle state measurement configuration; used for quickly establishing the SCG and serving cell measurement configuration; used for measurement configuration when the SCG is deactivated.

[0211] In some embodiments of the present application, the RRM measurement configuration is carried in a system information block SIB and / or dedicated signaling.

[0212] In some embodiments of the present application, the first indication information is carried on at least one of the following: physical downlink control PDCCH, media access control element MAC CE, signaling radio bearer SRB1 and signaling radio bearer SRB3.

[0213] In some embodiments of the present application, the communication unit 410 is specifically used for:

[0214] If the state of the data of the secondary node SN is the inactive state, the first indication information is sent to the terminal device.

[0215] In some embodiments of the present application, the communication unit 410 is further configured to:

[0216] Send configuration information for deactivating the SCG to the terminal device.

[0217] In some embodiments of the present application, the first node is a main node MN, and the communication unit 410 is further configured to:

[0218] A first notification message is sent to the secondary node SN, where the first notification message is used to notify the MN that it has instructed or is about to instruct the terminal device to deactivate the SCG.

[0219] In some embodiments of the present application, the communication unit 410 is further configured to:

[0220] Receive information sent by the SN for determining the status of data of the SN.

[0221] In some embodiments of the present application, the first node is a secondary node SN, and the communication unit 410 is further configured to:

[0222] A second notification message is sent to the master node MN, where the second notification message is used to notify the SN that it has instructed or is about to instruct the terminal device to deactivate the SCG.

[0223] In some embodiments of the present application, the communication unit 410 is further configured to:

[0224] Information for determining the status of the data of the SN is sent to the MN.

[0225] Combine the following Fig.16 The network node used for the MN is described.

[0226] like Fig.16 As shown, the network node 410 may include:

[0227] The communication unit 410 is used to send second indication information to the terminal device and the secondary node SN respectively, where the second indication information is used to indicate activation of the secondary cell group SCG.

[0228] In some embodiments of the present application, the communication unit 410 is specifically used for:

[0229] receiving information sent by a secondary node SN for determining a state of data of said SN;

[0230] If the data status of the SN is in an active state, the second indication information is sent to the terminal device.

[0231] In some embodiments of the present application, the state of the data of the SN includes an active state and an inactive state.

[0232] In some embodiments of the present application, the inactive state refers to at least one of the following:

[0233] No downlink data arrives for the bearer whose termination point is at the secondary node SN; no downlink data arrives from the user plane function UPF to the SN; for the SCG bearer whose termination point is at the primary node MN, no downlink data is transmitted from the MN to the SN through the Xn interface and / or the X2 interface; the bearer with service data arriving does not need to use the wireless resources of the SCG.

[0234] In some embodiments of the present application, the active state refers to at least one of the following:

[0235] Downlink data arrives at the bearer with the termination point at the secondary node SN; downlink data arrives at the SN from the user plane function UPF; for the SCG bearer with the termination point at the primary node MN, downlink data is transmitted from the MN to the SN via the Xn interface and / or the X2 interface; the bearer with service data arriving needs to use the wireless resources of the SCG.

[0236] In some embodiments of the present application, the SCG wireless resource includes at least one of the following:

[0237] Physical layer resources; Radio Link Layer Control RLC layer resources, Media Access Control MAC layer resources and physical layer resources; Service Data Adaptation Protocol SDAP layer resources, Packet Data Convergence Protocol PDCP layer resources, RLC layer resources, MAC layer resources and physical layer resources.

[0238] In some embodiments of the present application, the inactive state refers to at least one of the following:

[0239] The SCG bearer with the termination point at SN has no service to send; the SCG bearer with the termination point at MN has no service data to send; the forked bearer with the termination point at MN has no service data to send; the forked bearer with the termination point at SN has no service data to send.

[0240] In some embodiments of the present application, the active state refers to at least one of the following:

[0241] The SCG bearer with the termination point at SN has services to send; the SCG bearer with the termination point at MN has service data to send; the fork bearer with the termination point at MN has service data to send; the fork bearer with the termination point at SN has service data to send.

[0242] In some embodiments of the present application, the inactive state refers to at least one of the following:

[0243] The forked bearer with the termination point at MN, the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN, and the SCG bearer with the termination point at SN have no business data to send; the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN, and the SCG bearer with the termination point at SN have no business data to send; the SCG bearer with the termination point at MN and the SCG bearer with the termination point at SN have no business data to send.

[0244] In some embodiments of the present application, the active state refers to at least one of the following:

[0245] The forked bearer with the termination point at MN, the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN and the SCG bearer with the termination point at SN all have business data to send; the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN and the SCG bearer with the termination point at SN all have business data to send; the SCG bearer with the termination point at MN and the SCG bearer with the termination point at SN all have business data to send.

[0246] In some embodiments of the present application, the communication unit 410 is further configured to:

[0247] Receive third indication information sent by the terminal device, where the third indication information is used to indicate that the SCG needs to be activated.

[0248] In some embodiments of the present application, the communication unit 410 is specifically used for:

[0249] If the uplink data arrives at the bearer of the SN and / or the bearer to which the uplink data arrives needs to use the wireless resources of the SCG, the third indication information sent by the terminal device is received.

[0250] In some embodiments of the present application, the third indication information includes a bearer identifier and / or information used to indicate that the uplink data has arrived at the SN.

[0251] In some embodiments of the present application, the third indication information is carried on radio resource control RRC signaling or media access control element MAC CE.

[0252] In some embodiments of the present application, the third indication information includes a measurement result reported by the terminal device, and the measurement result is used by the MN or the secondary node SN to determine the activation state of the secondary cell SCell and / or the target primary and secondary cell group cell PSCell.

[0253] In some embodiments of the present application, the communication unit 410 is specifically used for:

[0254] The second indication information is sent to the SN through an Xn interface or an X2 interface.

[0255] In some embodiments of the present application, the second indication information includes identification information of a target primary and secondary cell group cell PSCell and information used to indicate an activation state of a secondary cell.

[0256] In some embodiments of the present application, the information used to indicate the activation state of the secondary cell is used to indicate whether the activation state of the secondary cell is an activated state or a deactivated state, and / or the information used to indicate the activation state of the secondary cell is used to indicate the identifier of the activated BWP of the secondary cell.

[0257] In some embodiments of the present application, the second indication information includes a measurement result reported by the terminal device, and the measurement result is used by the MN or the secondary node SN to determine the activation state of the secondary cell SCell and / or the target primary and secondary cell group cell PSCell.

[0258] In some embodiments of the present application, the communication unit 410 is further configured to:

[0259] Receive information sent by the SN to indicate the target primary and secondary cell group cell PSCell.

[0260] In some embodiments of the present application, the master node MN sends the second indication information to the terminal device, and the second indication information is carried on at least one of the following: radio resource control RRC signaling, physical downlink control PDCCH and media access control element MAC CE.

[0261] In some embodiments of the present application, the second indication information includes at least one of the following information:

[0262] Used to calculate the key of the SCG; the random access channel RACH resource used by the terminal device to initiate a random access process to the SCG; the cell index of the service cell where the PSCell or RACH resource is located; information used to indicate the initial state of the service cell in the SCG; information used to indicate the initial state cell of the dormant broadband component BWP in the service cell in the SCG.

[0263] In some embodiments of the present application, the information used to indicate the activation status of the service cell in the SCG includes at least one first bit, and the at least one first bit is used to indicate that the initial state of at least one service cell in the SCG is an activated state or a deactivated state.

[0264] In some embodiments of the present application, the information used to indicate the activation status cell of the dormant broadband component BWP in the service cell in the SCG includes at least one second bit, and the at least one second bit is used to indicate that the initial state of the dormant BWP of at least one service cell in the SCG is an activated state or a deactivated state.

[0265] In some embodiments of the present application, the communication unit 410 is specifically used for:

[0266] Send SCG configuration information to the terminal device, where the SCG configuration information includes the second indication information.

[0267] In some embodiments of the present application, the SCG configuration information is carried on radio resource control RRC signaling.

[0268] In some embodiments of the present application, the RRC signaling is an RRC reconfiguration message or an RRC recovery message.

[0269] In some embodiments of the present application, the communication unit 410 is further configured to:

[0270] Sending an add request message to the target node via an Xn interface or an X2 interface, wherein the add request message is used to request that the target node be added as a secondary node of the terminal device.

[0271] In some embodiments of the present application, the adding request information includes identification information of a target primary and secondary cell group cell PSCell and information for indicating an activation state of a secondary cell.

[0272] In some embodiments of the present application, the information used to indicate the activation state of the secondary cell is used to indicate whether the activation state of the secondary cell is an activated state or a deactivated state, and / or the information used to indicate the activation state of the secondary cell is used to indicate the identifier of the activated BWP of the secondary cell.

[0273] In some embodiments of the present application, the adding request information includes a measurement result reported by a terminal device, and the measurement result is used by the target node to determine the activation state of the secondary cell SCell and / or the target primary and secondary cell group cell PSCell.

[0274] In some embodiments of the present application, the communication unit 410 is specifically used for:

[0275] If the MN determines that the secondary node of the terminal device needs to be changed from the original node to the target node, an add request message is sent to the target node via the Xn interface or the X2 interface.

[0276] In some embodiments of the present application, the communication unit 410 is further configured to:

[0277] Send a release request message to the source node, where the release request message is used to request the source node to release the resources of the SCG.

[0278] Combine the following Fig.16 The network nodes used for the SN are described.

[0279] like Fig.16 As shown, the network node 400 may include:

[0280] The communication unit 410 is used to receive second indication information sent by the master node MN, where the second indication information is used to indicate activation of the secondary cell group SCG.

[0281] In some embodiments of the present application, the communication unit 410 is specifically used for:

[0282] Send information for determining the status of the data of the SN to the MN; if the status of the data of the SN is in an active state, receive the second indication information sent by the MN.

[0283] In some embodiments of the present application, the state of the data of the SN includes an active state and an inactive state.

[0284] In some embodiments of the present application, the inactive state refers to at least one of the following:

[0285] No downlink data arrives for the bearer whose termination point is at the secondary node SN; no downlink data arrives from the user plane function UPF to the SN; for the SCG bearer whose termination point is at the primary node MN, no downlink data is transmitted from the MN to the SN through the Xn interface and / or the X2 interface; the bearer with service data arriving does not need to use the wireless resources of the SCG.

[0286] In some embodiments of the present application, the active state refers to at least one of the following:

[0287] Downlink data arrives at the bearer with the termination point at the secondary node SN; downlink data arrives at the SN from the user plane function UPF; for the SCG bearer with the termination point at the primary node MN, downlink data is transmitted from the MN to the SN via the Xn interface and / or the X2 interface; the bearer with service data arriving needs to use the wireless resources of the SCG.

[0288] In some embodiments of the present application, the SCG wireless resource includes at least one of the following:

[0289] Physical layer resources; Radio Link Layer Control RLC layer resources, Media Access Control MAC layer resources and physical layer resources; Service Data Adaptation Protocol SDAP layer resources, Packet Data Convergence Protocol PDCP layer resources, RLC layer resources, MAC layer resources and physical layer resources.

[0290] In some embodiments of the present application, the inactive state refers to at least one of the following:

[0291] The SCG bearer with the termination point at SN has no service to send; the SCG bearer with the termination point at MN has no service data to send; the forked bearer with the termination point at MN has no service data to send; the forked bearer with the termination point at SN has no service data to send.

[0292] In some embodiments of the present application, the active state refers to at least one of the following:

[0293] The SCG bearer with the termination point at SN has services to send; the SCG bearer with the termination point at MN has service data to send; the fork bearer with the termination point at MN has service data to send; the fork bearer with the termination point at SN has service data to send.

[0294] In some embodiments of the present application, the inactive state refers to at least one of the following:

[0295] The forked bearer with the termination point at MN, the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN, and the SCG bearer with the termination point at SN have no business data to send; the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN, and the SCG bearer with the termination point at SN have no business data to send; the SCG bearer with the termination point at MN and the SCG bearer with the termination point at SN have no business data to send.

[0296] In some embodiments of the present application, the active state refers to at least one of the following:

[0297] The forked bearer with the termination point at MN, the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN and the SCG bearer with the termination point at SN all have business data to send; the SCG bearer with the termination point at MN, the MCG bearer with the termination point at SN, the forked bearer with the termination point at SN and the SCG bearer with the termination point at SN all have business data to send; the SCG bearer with the termination point at MN and the SCG bearer with the termination point at SN all have business data to send.

[0298] In some embodiments of the present application, the communication unit 410 is specifically used for:

[0299] The second indication information sent by the MN is received through the Xn interface or the X2 interface.

[0300] In some embodiments of the present application, the second indication information includes identification information of a target primary and secondary cell group cell PSCell and information used to indicate an activation state of a secondary cell.

[0301] In some embodiments of the present application, the information used to indicate the activation state of the secondary cell is used to indicate whether the activation state of the secondary cell is an activated state or a deactivated state, and / or the information used to indicate the activation state of the secondary cell is used to indicate the identifier of the activated BWP of the secondary cell.

[0302] In some embodiments of the present application, the second indication information includes a measurement result reported by the terminal device, and the measurement result is used by the MN or the secondary node SN to determine the activation state of the secondary cell SCell and / or the target primary and secondary cell group cell PSCell.

[0303] In some embodiments of the present application, the communication unit 410 is further configured to:

[0304] Information indicating the target primary and secondary cell group cell PSCell is sent to the MN.

[0305] In some embodiments of the present application, the communication unit 410 is further configured to:

[0306] Receive release request information sent by the MN, where the release request information is used to request the original node to release resources of the SCG.

[0307] It should be understood that the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment. Specifically, Fig.16 The network node 400 shown may correspond to the corresponding subject in the method 310 or the method 320 of the embodiment of the present application, and the aforementioned and other operations and / or functions of each unit in the network node 400 are respectively to implement Figures 10 to 15 For the sake of brevity, the corresponding processes in each method are not repeated here.

[0308] Fig.17 5 is a schematic block diagram of a terminal device 500 according to an embodiment of the present application. It should be understood that the terminal device may be a terminal device that interacts with the first node, or may be a terminal device that interacts with the MN or the SN.

[0309] Combine the following Fig.17 A terminal device that interacts with the first node is described.

[0310] like Fig.17 As shown, the terminal device 500 may include:

[0311] A communication unit 510 is configured to receive first indication information sent by a first node, where the first indication information is used to instruct the terminal device to deactivate a secondary cell group SCG;

[0312] The processing unit 520 is used to deactivate the SCG based on the first indication information.

[0313] In some embodiments of the present application, the bearer of the terminal device is at least one of the following:

[0314] The replication function of the packet data convergence protocol PDCP based on dual-connection DC is deactivated, and the main branch is the MN branch; for the forked bearer with the termination point at SN or the forked bearer with the termination point at MN, the SCG branch is deactivated and the MN branch is the main branch; the forked bearer with the termination point at SN is deactivated; the forked bearer with the termination point at MN is deactivated; the SCG bearer with the termination point at SN is deactivated; the MCG bearer with the termination point at SN remains activated; the SCG bearer with the termination point at MN is deactivated.

[0315] In some embodiments of the present application, the status of the serving cell in the SCG is at least one of the following:

[0316] Deactivated state; activated state or deactivated state, and the activated BWP of all activated service cells in the SCG is a dormant BWP; the RRC connection between the terminal device and the secondary node is in a deactivated state, and the RRC connection between the terminal device and the primary node is in a connected state.

[0317] In some embodiments of the present application, the processing unit 520 is further configured to:

[0318] Performing radio resource management RRM measurements; the communication unit is also used for:

[0319] Sending the measurement result of the RRM measurement to the master node.

[0320] In some embodiments of the present application, the communication unit 510 is further configured to:

[0321] Receive the RRM measurement configuration sent by the first node.

[0322] In some embodiments of the present application, the RRM measurement configuration includes at least one of the following:

[0323] Used for inter-frequency measurement configuration; used for intra-frequency measurement configuration; used for idle state measurement configuration; used for quickly establishing the SCG and serving cell; and used for measurement configuration when the SCG is deactivated.

[0324] In some embodiments of the present application, the RRM measurement configuration is carried in a system information block SIB and / or dedicated signaling.

[0325] In some embodiments of the present application, the first indication information is carried on at least one of the following: physical downlink control PDCCH, media access control element MAC CE, signaling radio bearer SRB1 and signaling radio bearer SRB3.

[0326] In some embodiments of the present application, the communication unit 510 is further configured to:

[0327] Receive configuration information sent by the first node for deactivating the SCG.

[0328] In some embodiments of the present application, the network node 500 is a master node MN or a slave node SN.

[0329] Combine the following Fig.17 The terminal device that interacts with the MN is described.

[0330] like Fig.17 As shown, the terminal device 500 may include:

[0331] The communication unit 510 is configured to receive second indication information sent by the master node MN, where the second indication information is used to indicate activation of the secondary cell group SCG;

[0332] The processing unit 520 is used to activate the SCG based on the second indication information.

[0333] In some embodiments of the present application, the communication unit 510 is further configured to:

[0334] Send third indication information to the MN, where the third indication information is used to indicate that the SCG needs to be activated.

[0335] In some embodiments of the present application, the communication unit 510 is specifically used for:

[0336] If the uplink data arrives at the bearer of the SN and / or the bearer to which the uplink data arrives needs to use the wireless resources of the SCG, the third indication information sent by the terminal device is received.

[0337] In some embodiments of the present application, the third indication information includes a bearer identifier and / or information used to indicate that the uplink data has arrived at the SN.

[0338] In some embodiments of the present application, the third indication information is carried on radio resource control RRC signaling or media access control element MAC CE.

[0339] In some embodiments of the present application, the third indication information includes a measurement result reported by the terminal device, and the measurement result is used by the MN or the secondary node SN to determine the activation state of the secondary cell SCell and / or the target primary and secondary cell group cell PSCell.

[0340] In some embodiments of the present application, the second indication information is carried on at least one of the following: radio resource control RRC signaling, physical downlink control PDCCH, and media access control element MAC CE.

[0341] In some embodiments of the present application, the second indication information includes at least one of the following information:

[0342] Used to calculate the key of the SCG; the random access channel RACH resource used by the terminal device to initiate a random access process to the SCG; the cell index of the service cell where the PSCell or RACH resource is located; information used to indicate the initial state of the service cell in the SCG; and information used to indicate the initial state cell of the dormant broadband component BWP in the service cell in the SCG.

[0343] In some embodiments of the present application, the information used to indicate the activation status of the service cell in the SCG includes at least one first bit, and the at least one first bit is used to indicate that the initial state of at least one service cell in the SCG is an activated state or a deactivated state.

[0344] In some embodiments of the present application, the information used to indicate the activation status cell of the dormant broadband component BWP in the service cell in the SCG includes at least one second bit, and the at least one second bit is used to indicate that the initial state of the dormant BWP of at least one service cell in the SCG is an activated state or a deactivated state.

[0345] In some embodiments of the present application, the communication unit 510 is specifically used for:

[0346] Receive SCG configuration information sent by the MN, where the SCG configuration information includes the second indication information.

[0347] In some embodiments of the present application, the SCG configuration information is carried on radio resource control RRC signaling.

[0348] In some embodiments of the present application, the RRC signaling is an RRC reconfiguration message or an RRC recovery message.

[0349] It should be understood that the device embodiment and the method embodiment may correspond to each other, and similar descriptions may refer to the method embodiment. Specifically, Fig.17 The terminal device 500 shown may correspond to the corresponding subject in executing the method 310 or the method 320 of the embodiment of the present application, and the aforementioned and other operations and / or functions of each unit in the terminal device 500 are respectively to implement Figures 10 to 15 For the sake of brevity, the corresponding processes in each method are not repeated here.

[0350] The communication device of the embodiment of the present application is described above from the perspective of functional modules in conjunction with the accompanying drawings. It should be understood that the functional modules can be implemented in hardware form, can also be implemented by software instructions, and can also be implemented by a combination of hardware and software modules.

[0351] Specifically, each step of the method embodiment in the embodiment of the present application can be completed by the hardware integrated logic circuit and / or software instructions in the processor. The steps of the method disclosed in the embodiment of the present application can be directly reflected as being executed by a hardware decoding processor, or being executed by a combination of hardware and software modules in the decoding processor.

[0352] Optionally, the software module may be located in a mature storage medium in the art, such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory, an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory, and the processor reads the information in the memory and completes the steps in the above method embodiment in combination with its hardware.

[0353] For example, the communication units mentioned above may be implemented by a processor and a transceiver respectively.

[0354] Fig.18 It is a schematic structural diagram of a communication device 600 according to an embodiment of the present application.

[0355] See also Fig.18 , the communication device 600 may include a processor 610.

[0356] The processor 610 may call and run a computer program from the memory to implement the method in the embodiment of the present application.

[0357] Please continue to see Fig.18 , the communication device 600 may further include a memory 620 .

[0358] The memory 620 may be used to store indication information, and may also be used to store codes, instructions, etc. executed by the processor 610. The processor 610 may call and run a computer program from the memory 620 to implement the method in the embodiment of the present application. The memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.

[0359] Please continue to see Fig.18 , the communication device 600 may further include a transceiver 630 .

[0360] The processor 610 may control the transceiver 630 to communicate with other devices, specifically, to send information or data to other devices, or to receive information or data sent by other devices. The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include an antenna, and the number of antennas may be one or more.

[0361] It should be understood that the various components in the communication device 600 are connected via a bus system, wherein the bus system includes not only a data bus but also a power bus, a control bus and a status signal bus.

[0362] It should also be understood that the communication device 600 may be a terminal device of an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the terminal device in each method of the embodiment of the present application, that is, the communication device 600 of the embodiment of the present application may correspond to the terminal device 500 in the embodiment of the present application, and may correspond to the corresponding subjects in the methods 310 and 320 according to the embodiments of the present application, and for the sake of brevity, it will not be repeated here. Similarly, the communication device 600 may be a network node of an embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network node in each method of the embodiment of the present application. That is to say, the communication device 600 of the embodiment of the present application may correspond to the network node 400 in the embodiment of the present application, and may correspond to the corresponding subjects in the methods 310 and 320 according to the embodiments of the present application, and for the sake of brevity, it will not be repeated here.

[0363] In addition, a chip is also provided in an embodiment of the present application.

[0364] For example, the chip may be an integrated circuit chip with signal processing capabilities, and can implement or execute the methods, steps, and logic diagrams disclosed in the embodiments of the present application. The chip may also be called a system-level chip, a system chip, a chip system, or a system-on-chip chip, etc. Optionally, the chip can be applied to various communication devices, so that the communication device equipped with the chip can execute the methods, steps, and logic diagrams disclosed in the embodiments of the present application.

[0365] Fig.19 is a schematic structural diagram of a chip 700 according to an embodiment of the present application.

[0366] See also Fig.19 , the chip 700 includes a processor 710 .

[0367] The processor 710 may call and run a computer program from the memory to implement the method in the embodiment of the present application.

[0368] Please continue to see Fig.19 , the chip 700 may further include a memory 720 .

[0369] The processor 710 may call and run a computer program from the memory 720 to implement the method in the embodiment of the present application. The memory 720 may be used to store indication information, and may also be used to store codes, instructions, etc. executed by the processor 710. The memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.

[0370] Please continue to see Fig.19 , the chip 700 may further include an input interface 730 .

[0371] The processor 710 may control the input interface 730 to communicate with other devices or chips, and specifically, may obtain information or data sent by other devices or chips.

[0372] Please continue to see Fig.19 , the chip 700 may further include an output interface 740 .

[0373] The processor 710 may control the output interface 740 to communicate with other devices or chips, and specifically, may output information or data to other devices or chips.

[0374] It should be understood that the chip 700 can be applied to the network node in the embodiments of the present application, and the chip can implement the corresponding processes implemented by the network node in the various methods of the embodiments of the present application, and can also implement the corresponding processes implemented by the terminal device in the various methods of the embodiments of the present application. For the sake of brevity, it will not be repeated here.

[0375] It should also be understood that the various components in the chip 700 are connected via a bus system, wherein the bus system includes not only a data bus but also a power bus, a control bus and a status signal bus.

[0376] The processors mentioned above may include but are not limited to:

[0377] General-purpose processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware components, etc.

[0378] The processor can be used to implement or execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. The steps of the method disclosed in the embodiments of the present application can be directly embodied as a hardware decoding processor, or a combination of hardware and software modules in the decoding processor. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an erasable programmable memory, a register, etc. The storage medium is located in a memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.

[0379] The memory mentioned above includes but is not limited to:

[0380] Volatile memory and / or non-volatile memory. Among them, the non-volatile memory can be read-only memory (ROM), programmable ROM (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM) or flash memory. The volatile memory can be random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link DRAM (SLDRAM), and direct RAM bus random access memory (DR RAM).

[0381] It should be noted that the memory described herein is intended to include these and any other suitable types of memory.

[0382] In an embodiment of the present application, a computer-readable storage medium is further provided for storing a computer program. The computer-readable storage medium stores one or more programs, and the one or more programs include instructions, which, when executed by a portable electronic device including multiple application programs, enable the portable electronic device to execute the method of the embodiment shown in method 310 and / or method 320.

[0383] Optionally, the computer-readable storage medium can be applied to the network node in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network node in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0384] Optionally, the computer-readable storage medium can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0385] A computer program product is also provided in an embodiment of the present application, including a computer program.

[0386] Optionally, the computer program product may be applied to the network node in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network node in the various methods in the embodiments of the present application, which will not be described in detail here for the sake of brevity.

[0387] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, they are not repeated here.

[0388] The present application also provides a computer program in an embodiment. When the computer program is executed by a computer, the computer can execute the method in the embodiment shown in method 310 and / or method 320.

[0389] Optionally, the computer program may be applied to the network node in the embodiments of the present application. When the computer program runs on a computer, the computer executes the corresponding processes implemented by the network node in the various methods in the embodiments of the present application. For the sake of brevity, they are not described here.

[0390] In addition, the embodiment of the present application also provides a communication system, which may include the terminal device and the network node involved above to form a communication system as follows: Figure 1 The communication system 100 shown is not described in detail for the sake of brevity. It should be noted that the term "system" and the like in this document may also be referred to as "network management architecture" or "network system" and the like.

[0391] It should also be understood that the terms used in the embodiments of the present application and the appended claims are for the purpose of describing specific embodiments only and are not intended to limit the embodiments of the present application.

[0392] For example, as used in the embodiments of the present application and the appended claims, the singular forms "a," "said," "above," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise.

[0393] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered to be beyond the scope of the embodiments of the present application.

[0394] If implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or the 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, a server, or a network device, etc.) to perform all or part of the steps of the method described in the embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as a USB flash drive, a mobile hard disk, a read-only memory, a random access memory, a magnetic disk or an optical disk.

[0395] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0396] In several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways.

[0397] For example, the division of units or modules or components in the device embodiment described above is only a logical function division, and there may be other division methods in actual implementation. For example, multiple units or modules or components can be combined or integrated into another system, or some units or modules or components can be ignored or not executed.

[0398] For another example, the units / modules / components described above as separation / display components may or may not be physically separated, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units / modules / components may be selected according to actual needs to achieve the purpose of the embodiments of the present application.

[0399] Finally, it should be noted that the mutual coupling or direct coupling or communication connection shown or discussed above may be an indirect coupling or communication connection through some interfaces, devices or units, which may be electrical, mechanical or other forms.

[0400] The above contents are only specific implementation methods of the embodiments of the present application, but the protection scope of the embodiments of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or replacements within the technical scope disclosed in the embodiments of the present application, which should be included in the protection scope of the embodiments of the present application. Therefore, the protection scope of the embodiments of the present application shall be based on the protection scope of the claims.

Claims

1. A wireless communication method, characterized in that: include: The first node sends first indication information to the terminal device, where the first indication information is used to indicate deactivation of the secondary cell group SCG, wherein the first indication information is carried in the signaling radio bearer SRB1, The method further comprises: The first node sends configuration information for deactivating the SCG to the terminal device.

2. The method according to claim 1, characterized in that The method further comprises: The first node obtains the status of data of the secondary node SN.

3. The method according to claim 2, characterized in that The state of the data of the SN includes an active state and an inactive state.

4. The method according to claim 3, characterized in that The inactive state refers to at least one of the following: No downlink data arrives at the bearer of the termination point at the secondary node SN; No downlink data reaches the SN from the user plane function UPF; For the SCG bearer with the termination point at the master node MN, no downlink data is transmitted from the MN to the SN via the Xn interface and / or the X2 interface; The bearer with arriving service data does not need to use the radio resources of the SCG.

5. The method according to claim 3, characterized in that: The active status refers to at least one of the following: Downlink data arrives at the bearer of the termination point at the secondary node SN; Downlink data arrives at the SN from the user plane function UPF; For the SCG bearer with the termination point at the master node MN, downlink data is transmitted from the MN to the SN via the Xn interface and / or the X2 interface; The bearer with arriving business data needs to use the wireless resources of the SCG.

6. The method according to claim 4 or 5, characterized in that: The SCG wireless resource includes at least one of the following: Physical layer resources; The radio link layer controls the RLC layer resources, the media access layer controls the MAC layer resources and the physical layer resources; Service Data Adaptation Protocol SDAP layer resources, Packet Data Convergence Protocol PDCP layer resources, RLC layer resources, MAC layer resources and physical layer resources.

7. The method according to any one of claims 1 to 5, characterized in that The bearer of the terminal device is at least one of the following: The replication function of the packet data convergence protocol PDCP based on dual-connection DC is deactivated, and the main branch is the MN branch; For a bifurcated bearer with a termination point at SN or a bifurcated bearer with a termination point at MN, the branch of SCG is deactivated and the branch of MN is the main branch; The forked bearer at the termination point on SN is deactivated; The forked bearer of the termination point in the MN is deactivated; The SCG bearer of the termination point at the SN is deactivated; The MCG bearer of the termination point at SN remains activated; The SCG bearer of the termination point in the MN is deactivated.

8. The method according to any one of claims 1 to 5, characterized in that The status of the serving cell in the SCG is at least one of the following: Deactivation state; The activated state or the deactivated state, and the activated BWP of all activated serving cells in the SCG is a dormant BWP; The RRC connection between the terminal device and the secondary node is in a deactivated state, and the RRC connection between the terminal device and the primary node is in a connected state.

9. The method according to any one of claims 3 to 5, characterized in that The first indication information sent by the first node to the terminal device includes: If the data state of the secondary node SN is the inactive state, the first node sends the first indication information to the terminal device.

10. The method according to any one of claims 1 to 5, characterized in that The first node is a main node MN, and the method further includes: The MN sends first notification information to the secondary node SN, where the first notification information is used to notify the MN that it has instructed or is about to instruct the terminal device to deactivate the SCG.

11. The method according to claim 10, characterized in that The method further comprises: The MN receives information sent by the SN for determining the status of data of the SN.

12. A wireless communication method, characterized in that: include: The terminal device receives first indication information sent by the first node, where the first indication information is used to instruct the terminal device to deactivate the secondary cell group SCG; The terminal device deactivates the SCG based on the first indication information, wherein the first indication information is carried in a signaling radio bearer SRB1, The method further comprises: The terminal device receives configuration information for deactivating the SCG sent by the first node.

13. The method according to claim 12, characterized in that The first node is a primary node MN or a secondary node SN.

14. A wireless communication method, characterized in that: include: The master node MN sends second indication information to the terminal device and the secondary node SN respectively, where the second indication information is used to indicate activation of the secondary cell group SCG. The master node MN sends the second indication information to the terminal device and the secondary node SN respectively, including: The MN receives information sent by the secondary node SN for determining the status of data of the SN; If the data status of the SN is in an active state, the MN sends the second indication information to the terminal device.

15. The method according to claim 14, characterized in that The state of the data of the SN includes an active state and an inactive state.

16. The method according to claim 15, characterized in that The inactive state refers to at least one of the following: No downlink data arrives at the bearer of the termination point at the secondary node SN; No downlink data reaches the SN from the user plane function UPF; For the SCG bearer with the termination point at the master node MN, no downlink data is transmitted from the MN to the SN via the Xn interface and / or the X2 interface; The bearer with arriving service data does not need to use the radio resources of the SCG.

17. The method according to claim 15, characterized in that The active status refers to at least one of the following: Downlink data arrives at the bearer of the termination point at the secondary node SN; Downlink data arrives at the SN from the user plane function UPF; For the SCG bearer with the termination point at the master node MN, downlink data is transmitted from the MN to the SN via the Xn interface and / or the X2 interface; The bearer with arriving business data needs to use the wireless resources of the SCG.

18. The method according to claim 16 or 17, characterized in that The SCG wireless resource includes at least one of the following: Physical layer resources; The radio link layer controls the RLC layer resources, the media access layer controls the MAC layer resources and the physical layer resources; Service Data Adaptation Protocol SDAP layer resources, Packet Data Convergence Protocol PDCP layer resources, RLC layer resources, MAC layer resources and physical layer resources.

19. The method according to any one of claims 14 to 17, characterized in that The method further comprises: The MN receives third indication information sent by the terminal device, where the third indication information is used to indicate that the SCG needs to be activated.

20. The method according to claim 19, characterized in that The MN receives the third indication information sent by the terminal device, including: If the uplink data arrives at the bearer of the SN and / or the bearer to which the uplink data arrives needs to use the wireless resources of the SCG, the MN receives the third indication information sent by the terminal device.

21. The method according to claim 19, characterized in that The third indication information includes a bearer identifier and / or information used to indicate that the uplink data has arrived at the SN.

22. The method according to claim 19, characterized in that The third indication information is carried on radio resource control RRC signaling or media access control element MAC CE.

23. The method according to any one of claims 14 to 17, characterized in that The master node MN sends second indication information to the terminal device and the secondary node SN respectively, including: The MN sends SCG configuration information to the terminal device, where the SCG configuration information includes the second indication information.

24. The method according to claim 14, characterized in that The SCG configuration information is carried on the radio resource control RRC signaling.

25. The method according to claim 24, characterized in that The RRC signaling is an RRC reconfiguration message or an RRC recovery message.

26. The method according to claim 14, characterized in that The method further comprises: The MN sends an add request message to the target node through an Xn interface or an X2 interface, where the add request message is used to request that the target node be added as a secondary node of the terminal device.

27. The method according to claim 26, characterized in that The adding request information includes identification information of a target primary and secondary cell group cell PSCell and information indicating an activation state of a secondary cell.

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