Method and apparatus for determining terminal device behavior, terminal device, network device

Abstract

The embodiment of the application provides a method and device for determining terminal equipment behavior, terminal equipment and network equipment, which comprises the following steps: the terminal equipment receives SCG configuration information sent by the network equipment, wherein the SCG configuration information comprises first indication information, and the first indication information is used for indicating whether the state of the SCG is an active state or a deactivated state; in the case that the first indication information indicates that the state of the SCG is the deactivated state, the terminal equipment determines the behavior after the SCG is deactivated and / or whether the random access process to the PSCell is performed after the SCG is deactivated.

Description

[0001] This application is a divisional application of PCT International Patent Application No. PCT / CN2021 / 093948, filed on May 14, 2021, entitled “Method and apparatus for determining behavior of terminal device, terminal device, and network device”, which entered the Chinese national phase as Chinese Patent Application No. 202180094164.3. TECHNICAL FIELD

[0002] Embodiments of the present application relate to the field of mobile communication technology, in particular to a method and apparatus for determining behavior of a terminal device, a terminal device, and a network device. BACKGROUND

[0003] A secondary cell group (SCG) can be in an activated state or a deactivated state. Compared with the SCG in the activated state, the terminal device is more energy-saving when the SCG is in the deactivated state.

[0004] Currently, the behavior of the terminal device on a primary secondary cell (PSCell) after the SCG is in the deactivated state is not clear, which will result in that the activation of the SCG cannot be guaranteed. SUMMARY

[0005] Embodiments of the present application provide a method and apparatus for determining behavior of a terminal device, a terminal device, and a network device.

[0006] The method for determining behavior of a terminal device provided by the embodiments of the present application comprises:

[0007] The terminal device receives SCG configuration information sent by a network device, wherein the SCG configuration information comprises first indication information, and the first indication information is used to indicate whether the state of the SCG is an activated state or a deactivated state.

[0008] In a case where the first indication information indicates that the state of the SCG is the deactivated state, the terminal device determines the behavior after the SCG is deactivated and / or whether to perform a random access procedure to the PSCell after the SCG is deactivated.

[0009] The method for determining behavior of a terminal device provided by the embodiments of the present application comprises:

[0010] The network device sends SCG configuration information to the terminal device, wherein the SCG configuration information comprises first indication information, and the first indication information is used to indicate whether the state of the SCG is an activated state or a deactivated state; and wherein the SCG configuration information is used for the terminal device to determine the behavior after the SCG is deactivated and / or whether to perform a random access procedure to the PSCell after the SCG is deactivated.

[0011] The device for determining the behavior of a terminal device provided in the embodiments of the present application is applied to a terminal device, and comprises:

[0012] The receiving unit is configured to receive SCG configuration information sent by the network device, wherein the SCG configuration information comprises first indication information, and the first indication information is used to indicate whether the state of the SCG is an active state or a deactivated state.

[0013] The determining unit is configured to, in the case where the first indication information indicates that the state of the SCG is the deactivated state, determine the behavior of the terminal device after the SCG is deactivated and / or whether the random access procedure to the PSCell is performed after the SCG is deactivated.

[0014] The device for determining the behavior of a terminal device provided in the embodiments of the present application is applied to a network device, and comprises:

[0015] The sending unit is configured to send SCG configuration information to the terminal device, wherein the SCG configuration information comprises first indication information, and the first indication information is used to indicate whether the state of the SCG is an active state or a deactivated state; and the SCG configuration information is used for the terminal device to determine the behavior of the terminal device after the SCG is deactivated and / or whether the random access procedure to the PSCell is performed after the SCG is deactivated.

[0016] The terminal device provided in the embodiments of the present application comprises a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and run the computer program stored in the memory to execute the method for determining the behavior of a terminal device.

[0017] The network device provided in the embodiments of the present application comprises a processor and a memory. The memory is configured to store a computer program, and the processor is configured to call and run the computer program stored in the memory to execute the method for determining the behavior of a terminal device.

[0018] The chip provided in the embodiments of the present application is used to implement the method for determining the behavior of a terminal device.

[0019] Specifically, the chip comprises a processor configured to call and run a computer program from a memory, so that a device installed with the chip executes the method for determining the behavior of a terminal device.

[0020] The computer readable storage medium provided in the embodiments of the present application is used to store a computer program, and the computer program causes a computer to execute the method for determining the behavior of a terminal device.

[0021] The computer program product provided in the embodiments of the present application comprises computer program instructions, and the computer program instructions cause a computer to execute the method for determining the behavior of a terminal device.

[0022] The computer program provided by the embodiment of the application, when running on a computer, enables the computer to execute the method for determining the behavior of the terminal device.

[0023] Through the technical solution, the terminal device is configured by the network device, and the behavior of the PSCell after the SCG is deactivated and / or whether the random access process to the PSCell is performed after the SCG is deactivated is determined, so that the activation of the PSCell can be guaranteed. BRIEF DESCRIPTION OF DRAWINGS

[0024] The accompanying drawings, which are included to provide a further understanding of the application and constitute a part of this application, illustrate certain illustrative embodiments of the application and together with the description serve to explain the application. In the drawings:

[0025] Figure 1 is a schematic diagram of a communication system architecture provided by the embodiment of the application;

[0026] Figure 2 is a flowchart of the method for determining the behavior of the terminal device provided by the embodiment of the application;

[0027] Figure 3 is a diagram of the correspondence between the bits in the first bit pattern and the behaviors provided by the embodiment of the application;

[0028] Figure 4 is a structural composition diagram of the apparatus for determining the behavior of the terminal device provided by the embodiment of the application Figure 1 ;

[0029] Figure 5 is a structural composition diagram of the apparatus for determining the behavior of the terminal device provided by the embodiment of the application Figure 2 ;

[0030] Figure 6 is a schematic structural diagram of a communication device provided by the embodiment of the application;

[0031] Figure 7 is a schematic structural diagram of a chip of the embodiment of the application;

[0032] Figure 8 is a schematic block diagram of a communication system provided by the embodiment of the application. DETAILED DESCRIPTION

[0033] The technical solutions of the embodiments of this application will now be described with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0034] The technical solutions of this application can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, 5G communication systems, or future communication systems.

[0035] For example, the communication system 100 used in the embodiments of this application is as follows: Figure 1 As shown. The communication system 100 may include a network device 110, which may be a device that communicates with a terminal 120 (or a communication terminal, terminal). The network device 110 can provide communication coverage for a specific geographical area and can communicate with terminals located within that coverage area. Optionally, the network device 110 may be an evolved Node B (eNB or eNodeB) in an LTE system, or a radio controller in a Cloud Radio Access Network (CRAN), or the network device may be a mobile switching center, relay station, access point, vehicle-mounted equipment, wearable device, hub, switch, bridge, router, network-side equipment in a 5G network, or network equipment in a future communication system, etc.

[0036] The communication system 100 further includes at least one terminal 120 located within the coverage of the network equipment 110. As used herein, a "terminal" includes, but is not limited to, an apparatus configured to receive / transmit communication signals via a wired line connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection; and / or another data connection / network; and / or a wireless interface, such as for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter; and / or another terminal; and / or an Internet of Things (IoT) device. A terminal configured to communicate over a wireless interface can be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular phones; Personal Communications System (PCS) terminals that can combine a cellular radiotelephone with data processing, facsimile, and data communications capabilities; PDA's that can include a wireless radio telephone, a pager, Internet / Intranet access, Web browser, an organizer, a calendar, and / or a Global Positioning System (GPS) receiver; and conventional laptop and / or palmtop receivers or other electronic devices that include a radio telephone transceiver. A terminal can refer to an access terminal, User Equipment (UE), subscriber unit, subscriber station, mobile station, mobile, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. An access terminal can be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device having wireless communication functions, a computing device, or other processing device connected to a wireless modem, an in-vehicle device, a wearable device, a terminal in a 5G network, or a terminal in a future evolved PLMN, etc.

[0037] Optionally, the terminals 120 can communicate with each other through Device to Device (D2D) communication.

[0038] Optionally, the 5G communication system or 5G network can also be referred to as a New Radio (NR) system or NR network.

[0039] Figure 1 Exemplarily, one network device and two terminals are shown, optionally, the communication system 100 can include multiple network devices and each network device can include other number of terminals within its coverage, which is not limited in the embodiments of the present application.

[0040] Optionally, the communication system 100 can further include a network controller, a mobile management entity and other network entities, which are not limited in the embodiments of the present application.

[0041] It should be understood that the devices with communication function in the network / system in the embodiments of the present application can be referred to as communication devices. For example, Figure 1 For example, the communication system 100, the communication devices can include network devices 110 and terminals 120 with communication function, the network devices 110 and the terminals 120 can be the specific devices described above, which will not be described here; the communication devices can also include other devices in the communication system 100, such as network controllers, mobile management entities and other network entities, which are not limited in the embodiments of the present application.

[0042] It should be understood that the terms "system" and "network" are often used interchangeably in this paper. The term "and / or" in this paper is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone. In addition, the character " / " in this paper generally represents an "or" relationship between the associated objects.

[0043] In order to facilitate understanding of the technical solutions of the embodiments of the present application, the related technologies of the embodiments of the present application are described as follows, which can be combined with the technical solutions of the embodiments of the present application in any way as optional schemes, and all belong to the protection scope of the embodiments of the present application.

[0044] With the pursuit of rate, delay, high-speed mobility, energy efficiency and the diversity and complexity of services in future life, the Third Generation Partnership Project (3GPP) has proposed a new radio (NR) system to meet the requirements of the next generation mobile communication system. rdThe 5G standardization work has been started by the 3rd Generation Partnership Project (3GPP), an international organization. The main application scenarios of 5G are: enhanced Mobile Broadband (eMBB), Ultra-Reliable Low-Latency Communications (URLLC), and massive Machine-Type Communications (mMTC).

[0045] On one hand, eMBB is still targeting at users to obtain multimedia content, services and data, and its demand is growing rapidly. On the other hand, since eMBB can be deployed in different scenarios, such as indoor, urban, rural, etc., its capabilities and requirements are quite different, so it cannot be generalized and must be analyzed in detail in combination with the specific deployment scenario. Typical applications of URLLC include industrial automation, power automation, remote medical operation (surgery), traffic safety guarantee, etc. Typical characteristics of mMTC include high connection density, small data volume, delay-insensitive service, low cost and long service life of modules, etc.

[0046] In the early deployment of NR, it is difficult to obtain complete NR coverage, so the typical network coverage is the wide-area LTE coverage and the isolated island coverage mode of NR. Moreover, a large number of LTE deployments are below 6 GHz, and there are few 6 GHz below spectrum available for 5G. Therefore, NR must study the application of spectrum above 6 GHz, and the coverage of high frequency band is limited and the signal decays quickly. At the same time, in order to protect the early investment of mobile operators in LTE, the working mode of tight interworking between LTE and NR is proposed.

[0047] In order to realize the deployment and commercial application of 5G network as soon as possible, 3GPP first completed the first 5G version, i.e. E-UTRA and NR dual connectivity (E-UTRA-NR Dual Connectivity, EN-DC), by the end of December 2017. In EN-DC, the LTE base station (eNB) acts as the master node (MN), and the NR base station (gNB or en-gNB) acts as the secondary node (SN). Among them, the MN is mainly responsible for the RRC control function and the control plane to the core network; the SN can configure auxiliary signaling, such as SRB3, and mainly provides data transmission function.

[0048] In R15 later stage, other dual connectivity (DC) modes will be supported, i.e. NR and E-UTRA dual connectivity (NR-E-UTRA Dual Connectivity, NE-DC), 5GC-EN-DC, NR DC. For EN-DC, the core network connected by the access network is the evolved packet core network (EPC), while the core network connected by other DC modes is the 5G core network (5GC).

[0049] In multi-RAT dual connectivity (MR-DC), after the SCG is configured by the SCG configuration information, the SCG is in an activated state by default, at this time the SCG configuration information contains a synchronization reconfiguration (ReconfigurationWithSync) for triggering the terminal device to initiate a random access procedure to the PSCell. The content of the synchronization reconfiguration can refer to the following table 1.

[0050]

[0051] Table 1

[0052] The SCG can also be in a deactivated state or an activated state. The SCG enters the deactivated state after being deactivated, and enters the activated state after being activated. Compared with the SCG in the activated state, the terminal device is more energy-saving when the SCG is in the deactivated state.

[0053] After the SCG is in the deactivated state, on the one hand, the behavior of the terminal device on the PSCell is not clear. On the other hand, during the SCG deactivation process, the terminal device and the PSCell can lose the uplink synchronization relationship. For example, if the timer for controlling the uplink synchronization times out, it indicates that the terminal device and the PSCell lose the uplink synchronization relationship. If the terminal device always maintains the uplink synchronization, it needs to frequently perform the random access procedure to restore the uplink synchronization, and obtain the synchronization between the good beams and the network. The disadvantage of this is power consumption, but if the random access procedure is not performed, the terminal device and the PSCell will always be in an unsynchronized state, which further increases the latency of SCG activation.

[0054] Therefore, the following technical scheme of the embodiments of the present application is proposed. The technical scheme of the embodiments of the present application clearly defines how to constrain the behavior of the terminal device in the SCG deactivation scenario.

[0055] The technical solutions of the embodiments of the present application can be applied to a dual connectivity (DC) architecture or a multi-connectivity (MC) architecture. In the DC architecture, there is one MCG and one SCG. In the MC architecture, there is one MCG and multiple SCGs. Among them, the cell group on the MN side is called MCG, and the cell group on the SN side is called SCG. The embodiments of the present application do not limit the type of DC, for example, it can be MR-DC, EN-DC, NE-DC, NR-DC, etc. The embodiments of the present application also do not limit the type of MC.

[0056] It should be noted that the description of "MCG side" in the embodiments of the present application can also be referred to as "MN side", and the description of "SCG side" can also be referred to as "SN side".

[0057] Figure 2 is a flowchart of a method for determining the behavior of a terminal device provided by the embodiments of the present application, as shown in Figure 2 The method for determining the behavior of a terminal device includes the following steps:

[0058] Step 201: The network device sends SCG configuration information to the terminal device, and the terminal device receives the SCG configuration information sent by the network device, wherein the SCG configuration information includes first indication information, and the first indication information is used to indicate whether the state of the SCG is an active state or a deactivated state.

[0059] Step 202: In the case where the first indication information indicates that the state of the SCG is a deactivated state, the terminal device determines the behavior after the SCG is deactivated and / or whether to perform a random access process to the PSCell after the SCG is deactivated.

[0060] In the embodiments of the present application, the terminal device processing the RRC connection state receives the SCG configuration information sent by the network device. The SCG configuration information is used for the terminal device to determine the behavior after the SCG is deactivated and / or whether to perform a random access process to the PSCell after the SCG is deactivated. In some optional embodiments, the network device can be an MN.

[0061] In some optional embodiments, the SCG configuration information is carried in an RRC reconfiguration (RRCReconfiguration) message or an RRC resume (RRCResume) message.

[0062] In the embodiments of the present application, the SCG configuration information includes first indication information, and the first indication information is used to indicate whether the state of the SCG is an active state or a deactivated state. Here, the first indication information can also be referred to as "SCG deactivation indication information". The SCG deactivation indication information is used to indicate whether the initial state of the SCG is an active state or a deactivated state. Further, optionally, if the SCG deactivation indication information is not included in the SCG configuration information, the initial state of the SCG is in the active state by default.

[0063] In the embodiments of the present application, the terminal device determines the behavior after the SCG is deactivated and / or whether to perform the random access procedure to the PSCell after the SCG is deactivated. The following will be described in different situations.

[0064] Scheme One

[0065] In the embodiments of the present application, the SCG configuration information further includes first configuration information, and the first configuration information is used to determine the behavior of the terminal device after the SCG is deactivated.

[0066] Here, the first configuration information can also be referred to as "SCG deactivation behavior constraint configuration information". Optionally, the first configuration information is configured only when the first indication information indicates that the state of the SCG is a deactivated state.

[0067] Scheme A1) The first configuration information includes second indication information, and the second indication information is used to indicate the SCG deactivation type; if the second indication information indicates the first type of SCG deactivation, the second indication information is used to indicate that the terminal device does not perform at least one behavior on the PSCell; if the second indication information indicates the second type of SCG deactivation, the second indication information is used to indicate that the terminal device performs at least one behavior on the PSCell.

[0068] In some optional embodiments, the at least one behavior includes at least one of the following: channel state information (CSI) measurement, CSI reporting, radio link failure (RLF) recovery, beam failure detection (BFD), beam failure recovery (BFR), and time advance (TA) maintenance.

[0069] It should be noted that after the SCG is deactivated, regardless of the type of SCG deactivation, the terminal device does not perform monitoring of a physical downlink control channel (PDCCH), reception of a physical downlink shared channel (PDSCH), and transmission of a physical uplink shared channel (PUSCH).

[0070] Option B1) The first configuration information includes a first bitmap, each bit in the first bitmap corresponds to one or more behaviors, and the value of the bit is used to indicate whether the behavior corresponding to the bit needs to be performed by the terminal device.

[0071] In some optional embodiments, all behaviors corresponding to all bits in the first bitmap include at least one of the following: CSI measurement, CSI reporting, BFD, BFR, and TA maintenance.

[0072] In the embodiments of the present application, the terminal device determines the behavior of the terminal device after the SCG is deactivated based on the first configuration information.

[0073] For example, referring to Figure 3 , the first bitmap includes 5 bits, bit 1 corresponds to CSI measurement, bit 2 corresponds to CSI reporting, bit 3 corresponds to BFD, bit 4 corresponds to BFR, and bit 5 corresponds to TA maintenance. The value of the bit is 1, which is used to indicate that the behavior corresponding to the bit needs to be performed by the terminal device, and the value of the bit is 0, which is used to indicate that the behavior corresponding to the bit does not need to be performed by the terminal device. Alternatively, the value of the bit is 0, which is used to indicate that the behavior corresponding to the bit needs to be performed by the terminal device, and the value of the bit is 1, which is used to indicate that the behavior corresponding to the bit does not need to be performed by the terminal device.

[0074] Option two

[0075] In the embodiments of the present application, the SCG configuration information further includes second configuration information, and the second configuration information is used to determine whether the terminal device performs a random access procedure to the PSCell after the SCG is deactivated.

[0076] Here, the SCG configuration information can also be referred to as "configuration information for terminal device to re-perform synchronization".

[0077] Option A2) the second configuration information comprises a first threshold; the first threshold is used by the terminal device to determine whether to perform the random access procedure to the PSCell based on the measured signal quality of the PSCell. Specifically, after the SCG is deactivated, if the measured signal quality of the PSCell by the terminal device is less than or equal to the first threshold, the terminal device determines to perform the random access procedure to the PSCell and obtains the uplink synchronization with the PSCell.

[0078] Optionally, the signal quality comprises a reference signal received power (RSRP) and / or a reference signal received quality (RSRQ).

[0079] Option B2) the second configuration information comprises a second threshold; the second threshold is used by the terminal device to determine whether to perform the random access procedure to the PSCell based on the variation of the measured signal quality of the PSCell. Specifically, after the SCG is deactivated, if the variation of the measured signal quality of the PSCell by the terminal device is greater than or equal to the second threshold, the terminal device determines to perform the random access procedure to the PSCell and obtains the uplink synchronization with the PSCell.

[0080] Optionally, the signal quality comprises a reference signal received power (RSRP) and / or a reference signal received quality (RSRQ).

[0081] Option C2) the second configuration information comprises length information of a first period; the length information of the first period is used by the terminal device to periodically perform the random access procedure to the PSCell. Specifically, after the SCG is deactivated, the terminal device periodically performs the random access procedure to the PSCell based on the length information of the first period and obtains the uplink synchronization with the PSCell.

[0082] Option D2) the second configuration information comprises length information of a first timer; the first timer is used to trigger the terminal device to perform the random access procedure to the PSCell. Specifically, after the SCG is deactivated, the terminal device starts the first timer at a first time, and if the first timer expires, the terminal device performs the random access procedure to the PSCell and obtains the uplink synchronization with the PSCell.

[0083] Optionally, the first time is the time when the SCG is deactivated, or the time when a timing advance timer (TAT) expires, or the time when the TAT stops.

[0084] Option Three

[0085] In the embodiments of the present application, after the SCG is deactivated, if the terminal device receives a first command sent by the master node MN, the terminal device determines to perform a random access procedure to the PSCell and obtains uplink synchronization with the PSCell; the first command is used to trigger the terminal device to send a random access procedure to the PSCell.

[0086] Optionally, the first command is carried in RRC signaling or a media access control (MAC) control element (CE).

[0087] In some optional embodiments, the first command is sent to the terminal device after the MN receives a request sent by the SN.

[0088] Scheme four

[0089] In the embodiments of the present application, the SCG configuration information includes ReconfigurationWithSync. In this case, the terminal device can determine whether to perform a random access procedure to the PSCell according to the following scheme.

[0090] Scheme A4) The first indication information is used for the terminal device to determine whether to perform a random access procedure to the PSCell. Specifically, if the first indication information indicates that the state of the SCG is a deactivated state, the terminal device determines not to perform a random access procedure to the PSCell. If the first indication information indicates that the state of the SCG is an activated state, the terminal device determines to perform a random access procedure to the PSCell.

[0091] Scheme B4) The SCG configuration information includes third indication information, which is used to indicate whether the terminal device performs a random access procedure to the PSCell; the terminal device determines whether to perform a random access procedure to the PSCell based on the third indication information.

[0092] The technical solutions of the embodiments of the present application are illustrated below in combination with specific application examples.

[0093] Application example one

[0094] The terminal device in an RRC connected state receives SCG configuration information sent by the network device. Optionally, the SCG configuration information is carried in an RRCReconfiguration message or an RRCResume message.

[0095] In the application example, the SCG configuration information includes first indication information (i.e., SCG deactivation indication information), which is used to indicate whether the initial state of the SCG is an active state or a deactivated state. If the first indication information does not exist, the initial state of the SCG is the active state by default.

[0096] In the application example, the SCG configuration information includes first configuration information (i.e., SCG deactivation behavior constraint configuration information), which is configured only when the first indication information indicates that the SCG is in the deactivated state. The first configuration information is used to explicitly or implicitly configure the behavior requirements of the terminal device after the SCG is deactivated.

[0097] In some optional embodiments, the first configuration information includes second indication information, which is used to indicate the SCG deactivation type. As an example, the SCG deactivation type is divided into two types, type 1 (i.e., the first type of SCG deactivation type) indicates that the terminal device does not perform at least one of the following behaviors for the PSCell after the SCG is deactivated: CSI measurement, CSI reporting, RLF, BFD, TA maintenance, and BFR. Type 2 (i.e., the second type of SCG deactivation type) indicates that the terminal device performs at least one of the following behaviors for the PSCell after the SCG is deactivated: CSI measurement, CSI reporting, RLF, BFD, TA maintenance, and BFR.

[0098] It should be noted that after the SCG is deactivated, regardless of which type of SCG deactivation type, the terminal device does not perform PDCCH monitoring, PDSCH reception, and PUSCH transmission.

[0099] In some optional embodiments, the first configuration information includes a first bitmap, each bit in the first bitmap corresponds to one or more behaviors, and the value of the bit is used to indicate whether the corresponding behavior needs to be performed by the terminal device after the SCG is deactivated. As an example, the value of the bit is 1, indicating that the terminal device needs to perform the corresponding behavior, and the value of the bit is 0, indicating that the terminal device does not need to perform the corresponding behavior. Each bit can correspond to at least one of the following behaviors: CSI measurement, CSI reporting, RLF, BFD, TA maintenance, and BFR.

[0100] Application Example Two

[0101] The terminal device in the RRC connected state receives the SCG configuration information sent by the network device. Optionally, the SCG configuration information is carried in the RRCReconfiguration message or the RRCResume message.

[0102] In the application example, the SCG configuration information includes first indication information (i.e., SCG deactivation indication information), which is used to indicate whether the initial state of the SCG is an active state or a deactivated state. If the first indication information does not exist, the initial state of the SCG is the active state by default.

[0103] In the application example, the SCG configuration information includes second configuration information (i.e., configuration information for the terminal device to re-perform synchronization).

[0104] In some optional embodiments, the second configuration information is configuration information based on a first threshold of RSRP and / or RSRQ. If the measured value of the RSRP and / or RSRQ of the PSCell is less than or equal to the first threshold, the terminal device triggers a random access procedure to re-acquire synchronization.

[0105] In some optional embodiments, the second configuration information is configuration information based on a second threshold of RSRP and / or RSRQ. If the change amount of the measured value of the RSRP and / or RSRQ of the PSCell is greater than or equal to the second threshold, the terminal device triggers a random access procedure to re-acquire synchronization.

[0106] In some optional embodiments, the second configuration information is length information of a period or time length information of a timer T1. When the SCG is deactivated, or the TAT timer expires, or the TAT timer stops, the timer T1 is started. If the timer T1 expires, the terminal device triggers a random access procedure to re-acquire synchronization.

[0107] In some optional embodiments, the terminal device receives a first command from the MN, which is used to trigger the terminal device to initiate a random access procedure to the PSCell to re-acquire synchronization. Optionally, the first command can be carried in RRC signaling or MAC CE. Here, the MN sends the first command to the terminal device after receiving a request from the SN, in other words, the request from the SN is used to trigger the MN to send the first command to the terminal device.

[0108] Application Example Three

[0109] The terminal device in the RRC connected state receives the SCG configuration information sent by the network device. Optionally, the SCG configuration information is carried in the RRCReconfiguration message or the RRCResume message.

[0110] The application example is mainly applied to the scene of SCG addition or SCG change, and the SCG configuration information includes synchronization reconfiguration (ReconfigurationWithSync).

[0111] In some optional embodiments, if the SCG configuration information contains the first indication information, and the first indication information indicates that the SCG is in the deactivated state, the terminal device does not perform the random access procedure to the PSCell, otherwise, the terminal device performs the random access procedure to the PSCell.

[0112] In some optional embodiments, the SCG configuration information contains third indication information, and the third indication information is used to indicate whether the terminal device needs to initiate the random access procedure to the PSCell. The terminal device determines whether to perform the random access procedure to the PSCell based on the third indication information.

[0113] Figure 4 Figure 1 is a structural component diagram of a device for determining terminal device behavior provided by an embodiment of the present application Figure 1 , applied to a terminal device, as shown in Figure 4 , the device for determining terminal device behavior comprises:

[0114] The receiving unit 401 is configured to receive the SCG configuration information sent by the network device, wherein the SCG configuration information contains the first indication information, and the first indication information is used to indicate whether the state of the SCG is the activated state or the deactivated state.

[0115] The determining unit 402 is configured to, in the case that the first indication information indicates that the state of the SCG is the deactivated state, determine the behavior of the terminal device after the SCG is deactivated and / or whether to perform the random access procedure to the PSCell after the SCG is deactivated.

[0116] In some optional embodiments, the SCG configuration information further contains the first configuration information, and the first configuration information is used to determine the behavior of the terminal device after the SCG is deactivated.

[0117] In some optional embodiments, the first configuration information contains the second indication information, and the second indication information is used to indicate the SCG deactivation type.

[0118] If the second indication information indicates the first type of SCG deactivation, the second indication information is used to indicate that the terminal device does not perform at least one behavior for the PSCell.

[0119] If the second indication information indicates the second type of SCG deactivation, the second indication information is used to indicate that the terminal device performs at least one behavior for the PSCell.

[0120] In some optional embodiments, the at least one behavior comprises at least one of the following: CSI measurement, CSI reporting, RLF recovery, BFD, BFR, and TA maintenance.

[0121] In some optional implementations, the first configuration information includes a first bitmap, each bit in the first bitmap corresponds to one or more behaviors, and a value of the bit is used to indicate whether the one or more behaviors corresponding to the bit need to be performed by the terminal device.

[0122] In some optional implementations, all behaviors corresponding to all bits in the first bitmap include at least one of the following: CSI measurement, CSI reporting, BFD, BFR, and TA maintenance.

[0123] In some optional implementations, the determining unit 402 is configured to determine, based on the first configuration information, behaviors of the terminal device after SCG deactivation.

[0124] In some optional implementations, the SCG configuration information further includes second configuration information, and the second configuration information is used to determine whether the terminal device performs a random access procedure to the PSCell after SCG deactivation.

[0125] In some optional implementations, the second configuration information includes a first threshold.

[0126] The determining unit 402 is configured to, after SCG deactivation, determine to perform the random access procedure to the PSCell and obtain uplink synchronization with the PSCell if a signal quality of the PSCell measured by the terminal device is less than or equal to the first threshold.

[0127] In some optional implementations, the second configuration information includes a second threshold.

[0128] The determining unit 402 is configured to, after SCG deactivation, determine to perform the random access procedure to the PSCell and obtain uplink synchronization with the PSCell if a change amount of the signal quality of the PSCell measured by the terminal device is greater than or equal to the second threshold.

[0129] In some optional implementations, the signal quality includes RSRP and / or RSRQ.

[0130] In some optional implementations, the second configuration information includes length information of a first period.

[0131] The apparatus further includes an executing unit configured to, after SCG deactivation, periodically perform the random access procedure to the PSCell and obtain the uplink synchronization with the PSCell based on the length information of the first period.

[0132] In some optional implementations, the second configuration information includes length information of a first timer.

[0133] The apparatus further includes an execution unit configured to, after the SCG is deactivated, start the first timer at a first time, and if the first timer expires, perform a random access procedure to the PSCell and obtain uplink synchronization with the PSCell.

[0134] In some optional embodiments, the first time is a time when the SCG is deactivated, or a time when the TAT expires, or a time when the TAT stops.

[0135] In some optional embodiments, the determination unit 402 is configured to, after the SCG is deactivated, if the receiving unit receives a first command sent by the MN, determine to perform a random access procedure to the PSCell and obtain uplink synchronization with the PSCell; the first command is used to trigger the terminal device to send a random access procedure to the PSCell.

[0136] In some optional embodiments, the first command is carried in RRC signaling or a MAC CE.

[0137] In some optional embodiments, the first command is sent to the terminal device after the MN receives a request sent by the SN.

[0138] In some optional embodiments, the SCG configuration information includes synchronization reconfiguration.

[0139] In some optional embodiments, the determination unit 402 is configured to, if the first indication information indicates that the state of the SCG is a deactivated state, determine not to perform a random access procedure to the PSCell.

[0140] In some optional embodiments, the determination unit 402 is further configured to, if the first indication information indicates that the state of the SCG is an activated state, determine to perform a random access procedure to the PSCell.

[0141] In some optional embodiments, the SCG configuration information includes third indication information, the third indication information being used to indicate whether the terminal device performs a random access procedure to the PSCell.

[0142] The determination unit 402 is configured to determine whether to perform a random access procedure to the PSCell based on the third indication information.

[0143] In some optional embodiments, the SCG configuration information is carried in an RRC reconfiguration message or an RRC resume message.

[0144] Those skilled in the art shall understand that the above description of the apparatus for determining terminal device behavior of the embodiments of the present application can be understood with reference to the description of the method for determining terminal device behavior of the embodiments of the present application.

[0145] Figure 5 is a structural composition of the apparatus for determining terminal device behavior provided by the embodiments of the present application Figure 2 , applied to a network device, as shown in Figure 5 , the apparatus for determining terminal device behavior comprises:

[0146] The sending unit 501 is configured to send SCG configuration information to the terminal device, wherein the SCG configuration information comprises first indication information, and the first indication information is used to indicate whether the state of the SCG is an active state or a deactivated state; wherein the SCG configuration information is used for the terminal device to determine the behavior after the SCG is deactivated and / or whether to perform a random access procedure to the PSCell after the SCG is deactivated.

[0147] In some optional embodiments, the SCG configuration information further comprises first configuration information, and the first configuration information is used to determine the behavior of the terminal device after the SCG is deactivated.

[0148] In some optional embodiments, the first configuration information comprises second indication information, and the second indication information is used to indicate the SCG deactivation type.

[0149] If the second indication information indicates the first type of SCG deactivation, the second indication information is used to indicate that the terminal device does not perform at least one behavior on the PSCell.

[0150] If the second indication information indicates the second type of SCG deactivation, the second indication information is used to indicate that the terminal device performs at least one behavior on the PSCell.

[0151] In some optional embodiments, the at least one behavior comprises at least one of the following: CSI measurement, CSI reporting, RLF recovery, BFD, BFR, and TA maintenance.

[0152] In some optional embodiments, the first configuration information comprises a first bitmap, each bit in the first bitmap corresponds to one or more behaviors, and the value of the bit is used to indicate whether the terminal device needs to perform the behavior corresponding to the bit.

[0153] In some optional embodiments, all behaviors corresponding to all bits in the first bitmap comprise at least one of the following: CSI measurement, CSI reporting, BFD, BFR, and TA maintenance.

[0154] In some optional implementations, the SCG configuration information further includes second configuration information, the second configuration information being used to determine whether the terminal device performs a random access procedure to the PSCell after the SCG is deactivated.

[0155] In some optional implementations, the second configuration information includes a first threshold; the first threshold being used for the terminal device to determine whether to perform the random access procedure to the PSCell based on a measured signal quality of the PSCell.

[0156] In some optional implementations, the second configuration information includes a second threshold; the second threshold being used for the terminal device to determine whether to perform the random access procedure to the PSCell based on a change amount of the measured signal quality of the PSCell.

[0157] In some optional implementations, the signal quality includes RSRP and / or RSRQ.

[0158] In some optional implementations, the second configuration information includes length information of a first period; the length information of the first period being used for the terminal device to periodically perform the random access procedure to the PSCell.

[0159] In some optional implementations, the second configuration information includes length information of a first timer; the first timer being used to trigger the terminal device to perform the random access procedure to the PSCell.

[0160] In some optional implementations, the SCG configuration information includes a synchronization reconfiguration.

[0161] In some optional implementations, the first indication information is used for the terminal device to determine whether to perform the random access procedure to the PSCell.

[0162] In some optional implementations, the SCG configuration information includes third indication information, the third indication information being used to indicate whether the terminal device performs the random access procedure to the PSCell.

[0163] In some optional implementations, the SCG configuration information is carried in an RRC reconfiguration message or an RRC resume message.

[0164] Those skilled in the art should understand that the above description of the apparatus for determining terminal device behavior of the embodiments of the present application can be understood with reference to the description of the method for determining terminal device behavior of the embodiments of the present application.

[0165] Figure 6 is a schematic structural diagram of a communication device 600 provided by an embodiment of the present application. The communication device can be a terminal device or a network device,Figure 6 The communication device 600 shown includes a processor 610, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0166] Optionally, such as Figure 6 As shown, the communication device 600 may further include a memory 620. The processor 610 can retrieve and run computer programs from the memory 620 to implement the methods described in this embodiment.

[0167] The memory 620 can be a separate device independent of the processor 610, or it can be integrated into the processor 610.

[0168] Optionally, such as Figure 6 As shown, the communication device 600 may also include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices. Specifically, it may send information or data to other devices or receive information or data sent by other devices.

[0169] The transceiver 630 may include a transmitter and a receiver. The transceiver 630 may further include antennas, and the number of antennas may be one or more.

[0170] Optionally, the communication device 600 may specifically be a network device in the embodiments of this application, and the communication device 600 may implement the corresponding processes implemented by the network device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0171] Optionally, the communication device 600 may specifically be a mobile terminal / terminal device in the embodiments of this application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal / terminal device in the various methods of the embodiments of this application. For the sake of brevity, it will not be described in detail here.

[0172] Figure 7 This is a schematic structural diagram of the chip according to an embodiment of this application. Figure 7 The chip 700 shown includes a processor 710, which can call and run computer programs from memory to implement the methods in the embodiments of this application.

[0173] Optionally, such as Figure 7 As shown, chip 700 may further include memory 720. Processor 710 can retrieve and run computer programs from memory 720 to implement the methods described in this embodiment.

[0174] The memory 720 can be a separate device independent of the processor 710, or it can be integrated into the processor 710.

[0175] Optionally, the chip 700 can further include an input interface 730. The processor 710 can control the input interface 730 to communicate with other devices or chips, and specifically, can acquire information or data sent by other devices or chips.

[0176] Optionally, the chip 700 can further include an output interface 740. The processor 710 can control the output interface 740 to communicate with other devices or chips, and specifically, can output information or data to other devices or chips.

[0177] Optionally, the chip can be applied to the network device in the embodiments of the present application, and the chip can implement the corresponding processes realized by the network device in the various methods of the embodiments of the present application. For the sake of brevity, details are not described herein.

[0178] Optionally, the chip can be applied to the mobile terminal / terminal device in the embodiments of the present application, and the chip can implement the corresponding processes realized by the mobile terminal / terminal device in the various methods of the embodiments of the present application. For the sake of brevity, details are not described herein.

[0179] It should be understood that the chip mentioned in the embodiments of the present application can also be referred to as a system chip, a system chip, a chip system or a system on chip, etc.

[0180] Figure 8 is a schematic block diagram of a communication system 800 provided by the embodiments of the present application. As shown in the figure, the communication system 800 includes a terminal device 810 and a network device 820. Figure 8

[0181] The terminal device 810 can be used to implement the corresponding functions realized by the terminal device in the above methods, and the network device 820 can be used to implement the corresponding functions realized by the network device in the above methods. For the sake of brevity, details are not described herein.

[0182] ​It should be understood that the processor of the embodiments of the present application can be an integrated circuit chip with a processing capability of signals. In the implementation process, each step of the method embodiments described above can be completed by the integrated logic circuit of hardware in the processor or the instructions in the form of software. The processor described above can be a general processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic devices, a discrete gate or transistor logic device, a discrete hardware component. The disclosed methods, steps and logic block diagrams in the embodiments of the present application can be implemented or executed. The general processor can be a microprocessor or the processor can also be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application can be directly embodied as a hardware code processor for execution, or can be executed by a combination of hardware and software modules in the code processor. The software module can be located in a random memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register or other mature storage medium in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and combines the hardware to complete the steps of the above method.

[0183] It is to be understood that the memory in the embodiments of the present application can be a volatile memory or a nonvolatile memory, or can include both volatile and nonvolatile memory. Among them, the nonvolatile memory can be a read-only memory (Read-Only Memory, ROM), a programmable read-only memory (Programmable ROM, PROM), an erasable programmable read-only memory (Erasable PROM, EPROM), an electrically erasable programmable read-only memory (Electrically EPROM, EEPROM) or a flash memory. The volatile memory can be a random access memory (Random Access Memory, RAM) used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synchlink DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM). It should be noted that the memory of the system and method described herein is intended to include, but not limited to, these and any other suitable types of memory.

[0184] It should be understood that the above-mentioned memory is exemplary but not limiting, for example, the memory in the embodiments of the present application can also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (double data rate SDRAM, DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and the like. That is, the memory in the embodiments of the present application is intended to include, but not limited to, these and any other suitable types of memory.

[0185] The embodiment of the present application further provides a computer readable storage medium for storing the computer program.

[0186] Optionally, the computer readable storage medium can be applied to the network device in the embodiment of the present application, and the computer program makes the computer execute the corresponding process realized by the network device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0187] Optionally, the computer readable storage medium can be applied to the mobile terminal / terminal device in the embodiment of the present application, and the computer program makes the computer execute the corresponding process realized by the mobile terminal / terminal device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0188] The embodiment of the present application further provides a computer program product comprising computer program instructions.

[0189] Optionally, the computer program product can be applied to the network device in the embodiment of the present application, and the computer program instructions make the computer execute the corresponding process realized by the network device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0190] Optionally, the computer program product can be applied to the mobile terminal / terminal device in the embodiment of the present application, and the computer program instructions make the computer execute the corresponding process realized by the mobile terminal / terminal device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0191] The embodiment of the present application further provides a computer program.

[0192] Optionally, the computer program can be applied to the network device in the embodiment of the present application, and when the computer program runs on the computer, makes the computer execute the corresponding process realized by the network device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0193] Optionally, the computer program can be applied to the mobile terminal / terminal device in the embodiment of the present application, and when the computer program runs on the computer, makes the computer execute the corresponding process realized by the mobile terminal / terminal device in the various methods of the embodiment of the present application, which will not be repeated here for the sake of brevity.

[0194] Those skilled in the art can clearly understand that the units and algorithm steps of each example described in combination with the embodiments disclosed herein can be realized by electronic hardware or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0195] Those skilled in the art can clearly understand that, for the convenience and brevity of the description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

[0196] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented in other ways. For example, the above-described device embodiments are only schematic, for example, the division of the units is only a logical function division, and actual implementation can have another division manner, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interface, device or unit, and can be electrical, mechanical or other forms.

[0197] The units described as separate components can or can not be physically separated, and the components shown as units can or can not be physical units, that is, they can be located in one place, or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0198] In addition, each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically independently, or two or more units can be integrated into one unit.

[0199] If the functions are implemented in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application essentially or the parts that contribute to the prior art or parts of the technical solutions can be embodied in the form of a software product. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and various media that can store program codes.

[0200] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any person skilled in the art can easily think of changes or replacements within the technical scope disclosed in the present application, which should be covered within the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A terminal device, comprising: A receiving unit is configured to receive SCG configuration information sent by a network device. The SCG configuration information includes first indication information, which indicates whether the SCG is in an active or deactivated state. The SCG configuration information also includes first configuration information, which determines the behavior of the terminal device after SCG deactivation. The first configuration information includes a first bitmap, where each bit corresponds to multiple behaviors. The value of each bit indicates whether the terminal device needs to perform the corresponding behaviors. All behaviors corresponding to all bits in the first bitmap include CSI measurement, CSI reporting, BFD, BFR, and TA maintenance. The SCG configuration information also includes second configuration information, which determines whether the terminal device performs a random access procedure to the PSCell after SCG deactivation. The second configuration information includes a second threshold. The determining unit is configured to determine the behavior of the SCG after deactivation based on the first configuration information when the first indication information indicates that the SCG is in a deactivated state, and to determine to execute a random access procedure to the PSCell and obtain uplink synchronization with the PSCell if the change in the signal quality of the PSCell measured by the terminal device is greater than or equal to the second threshold after the SCG is deactivated.

2. The terminal device according to claim 1, wherein, The signal quality includes the reference signal received power RSRP and / or the reference signal received quality RSRQ.

3. The terminal device according to claim 1, wherein, The second configuration information includes the length information of the first timer; The terminal device further includes an execution unit, configured to start the first timer at the first moment after the SCG is deactivated, and if the first timer times out, execute a random access procedure to the PSCell and obtain uplink synchronization with the PSCell.

4. The terminal device according to claim 3, wherein, The first moment is the moment when SCG is deactivated, or the moment when the timer TAT times out, or the moment when TAT stops.

5. A network device, comprising: A sending unit is configured to send SCG configuration information to a terminal device. The SCG configuration information includes first indication information, which indicates whether the SCG is in an active or deactivated state. The SCG configuration information also includes first configuration information, which determines the behavior of the terminal device after SCG deactivation. The first configuration information includes a first bitmap, where each bit corresponds to multiple behaviors. The value of each bit indicates whether the terminal device needs to execute the corresponding behaviors. All behaviors corresponding to all bits in the first bitmap include CSI measurement, CSI reporting, BFD, BFR, and TA maintenance. The SCG configuration information also includes second configuration information, which determines whether the terminal device should perform a random access procedure to the PSCell after SCG deactivation. The second configuration information includes a second threshold, which is used by the terminal device to determine whether to perform a random access procedure to the PSCell based on the measured change in the signal quality of the PSCell.

6. The network device according to claim 5, wherein, The signal quality includes the reference signal received power RSRP and / or the reference signal received quality RSRQ.

7. The network device according to claim 5, wherein, The second configuration information includes the length information of the first timer; the first timer is used to trigger the terminal device to perform a random access process to the PSCell.

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