WO2022110048A1

WO2022110048A1 - Information indication method and apparatus, terminal device, and network device

Info

Publication number: WO2022110048A1
Application number: PCT/CN2020/132376
Authority: WO
Inventors: 王淑坤; 徐婧; 付喆
Original assignee: Oppo广东移动通信有限公司
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2022-06-02
Also published as: CN116114287A

Abstract

Provided are an information indication method and apparatus, a terminal device, and a network device. The method comprises: a terminal device receiving a secondary cell group (SCG) activation command, wherein the SCG activation command is used for activating an SCG, and the SCG activation command carries indication information, the indication information being used for indicating, to the terminal device, whether to execute a specified behavior after the SCG is activated.

Description

A kind of information indication method and apparatus, terminal equipment, network equipment

technical field

The embodiments of the present application relate to the field of mobile communication technologies, and in particular, to an information indication method and apparatus, a terminal device, and a network device.

Background technique

A secondary cell group (Secondary Cell Group, SCG) may be in an activated state or a deactivated state. When the SCG enters the activated state from the deactivated state, how to ensure that the SCG can work normally and effectively needs to be solved.

SUMMARY OF THE INVENTION

Embodiments of the present application provide an information indication method and apparatus, a terminal device, and a network device.

The information indication method provided by the embodiment of the present application includes:

The terminal device receives an SCG activation command, and the SCG activation command is used to activate the SCG;

Wherein, the SCG activation command carries indication information, and the indication information is used to indicate whether the terminal device performs a specified behavior after the SCG is activated.

The network device sends an SCG activation command to the terminal device, and the SCG activation command is used to activate the SCG; wherein, the SCG activation command carries indication information, and the indication information is used to indicate whether the terminal device executes the specified SCG after the SCG is activated. Behavior.

The information indicating device provided by the embodiment of the present application is applied to terminal equipment, and the device includes:

a receiving unit, configured to receive an SCG activation command, where the SCG activation command is used to activate the SCG;

The information indicating device provided by the embodiment of the present application is applied to network equipment, and the device includes:

a sending unit, configured to send an SCG activation command to the terminal device, where the SCG activation command is used to activate the SCG;

The terminal device provided by the embodiments of the present application includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the above-mentioned information indicating method.

The network device provided by the embodiments of the present application includes a processor and a memory. The memory is used for storing a computer program, and the processor is used for calling and running the computer program stored in the memory to execute the above-mentioned information indicating method.

The chip provided by the embodiment of the present application is used to implement the above-mentioned information indication method.

Specifically, the chip includes: a processor for calling and running a computer program from the memory, so that the device installed with the chip executes the above-mentioned information indicating method.

The computer-readable storage medium provided by the embodiment of the present application is used to store a computer program, and the computer program enables a computer to execute the above-mentioned information indication method.

The computer program product provided by the embodiments of the present application includes computer program instructions, and the computer program instructions cause a computer to execute the above-mentioned information indication method.

The computer program provided by the embodiment of the present application, when running on a computer, causes the computer to execute the above-mentioned information indicating method.

Through the above technical solution, the terminal device can specify whether the SCG executes the specified behavior after being activated through the indication information carried in the SCG activation command, so as to ensure that the SCG can work normally and effectively after activation through the specified line.

Description of drawings

The drawings described herein are used to provide further understanding of the present application and constitute a part of the present application. The schematic embodiments and descriptions of the present application are used to explain the present application and do not constitute an improper limitation of the present application. In the attached image:

FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application;

2 is a schematic diagram of a bearer type provided by an embodiment of the present application;

3 is a schematic flowchart of an information indication method provided by an embodiment of the present application;

FIG. 4 is a schematic diagram 1 of the structure and composition of an information indicating device provided by an embodiment of the present application;

FIG. 5 is a schematic diagram 2 of the structure and composition of an information indicating device provided by an embodiment of the present application;

FIG. 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 7 is a schematic structural diagram of a chip according to an embodiment of the present application;

FIG. 8 is a schematic block diagram of a communication system provided by an embodiment of the present application.

Detailed ways

The technical solutions in the embodiments of the present application will be described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of this application.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as: Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (Time Division Duplex) , TDD), systems, 5G communication systems or future communication systems, etc.

Exemplarily, a communication system 100 to which this embodiment of the present application is applied is shown in FIG. 1 . The communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal 120 (or referred to as a communication terminal, a terminal). The network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Optionally, the network device 110 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in an LTE system, or a wireless controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the The network device can be a mobile switching center, a relay station, an access point, a vehicle-mounted device, a wearable device, a hub, a switch, a bridge, a router, a network-side device in a 5G network, or a network device in a future communication system.

The communication system 100 also includes at least one terminal 120 located within the coverage of the network device 110 . "Terminal" as used herein includes, but is not limited to, connections via wired lines, such as via Public Switched Telephone Networks (PSTN), Digital Subscriber Line (DSL), digital cable, direct cable connections; and/or another data connection/network; and/or via a wireless interface, e.g. for cellular networks, Wireless Local Area Networks (WLAN), digital television networks such as DVB-H networks, satellite networks, AM-FM A broadcast transmitter; and/or a device of another terminal configured to receive/transmit a communication signal; and/or an Internet of Things (IoT) device. A terminal arranged to communicate through a wireless interface may 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 telephones; Personal Communications System (PCS) terminals that may combine cellular radio telephones with data processing, fax, and data communications capabilities; may include radio telephones, pagers, Internet/Intranet PDAs with networking access, web browsers, memo pads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or others including radiotelephone transceivers electronic device. A terminal may refer to an access terminal, user equipment (UE), subscriber unit, subscriber station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication device, user agent, or user device. The access terminal may 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 wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminals in 5G networks or terminals in future evolved PLMNs, etc.

Optionally, direct terminal (Device to Device, D2D) communication may be performed between the terminals 120 .

Optionally, the 5G communication system or the 5G network may also be referred to as a new radio (New Radio, NR) system or an NR network.

FIG. 1 exemplarily shows one network device and two terminals. Optionally, the communication system 100 may include multiple network devices, and the coverage of each network device may include other numbers of terminals. This embodiment of the present application This is not limited.

Optionally, the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.

It should be understood that, in the embodiments of the present application, a device having a communication function in the network/system may be referred to as a communication device. Taking the communication system 100 shown in FIG. 1 as an example, the communication device may include a network device 110 and a terminal 120 with a communication function, and the network device 110 and the terminal 120 may be the specific devices described above, which will not be repeated here; The device may further include other devices in the communication system 100, such as other network entities such as a network controller and a mobility management entity, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are often used interchangeably herein. The term "and/or" in this article is only an association relationship to describe the associated objects, indicating that there can be three kinds of relationships, for example, A and/or B, it can mean that A exists alone, A and B exist at the same time, and A and B exist independently B these three cases. In addition, the character "/" in this document generally indicates that the related objects are an "or" relationship.

In order to facilitate the understanding of the technical solutions of the embodiments of the present application, the following describes the technical solutions related to the embodiments of the present application.

With people's pursuit of speed, delay, high-speed mobility, energy efficiency, and the diversity and complexity of services in future life, the ^3rd Generation Partnership Project (3GPP) international standards organization began to develop 5G . The main application scenarios of 5G are: Enhanced Mobile Broadband (eMBB), Ultra-Reliable Low-Latency Communications (URLLC), Massive Machine-Type Communications (mMTC) ).

On the one hand, eMBB still aims at users' access to multimedia content, services and data, and its demand is growing rapidly. On the other hand, since eMBB may be deployed in different scenarios, such as indoor, urban, rural, etc., its capabilities and requirements are also quite different, so it cannot be generalized and must be analyzed in detail in combination with specific deployment scenarios. Typical applications of URLLC include: industrial automation, power automation, telemedicine operations (surgery), traffic safety assurance, etc. Typical features of mMTC include: high connection density, small data volume, latency-insensitive services, low cost and long service life of the module.

In the early deployment of NR, complete NR coverage is difficult to obtain, so typical network coverage is wide-area LTE coverage and NR island coverage mode. And a lot of LTE is deployed in sub-6GHz, and there is very little sub-6GHz spectrum available for 5G. Therefore, NR must study the spectrum application above 6GHz, while the high frequency band has limited coverage and fast signal fading. At the same time, in order to protect the early investment of mobile operators in LTE, a working mode of tight interworking between LTE and NR is proposed.

In order to realize 5G network deployment and commercial application as soon as possible, 3GPP will first complete the first 5G version before the end of December 2017, namely E-UTRA and NR Dual Connectivity (E-UTRA-NR Dual Connectivity, EN-DC). In EN-DC, an LTE base station (eNB) acts as a master node (Master Node, MN), and an NR base station (gNB or en-gNB) acts as a secondary node (Secondary Node, SN). The MN is mainly responsible for the RRC control function and the control plane leading to the core network; the SN can configure auxiliary signaling, such as SRB3, which mainly provides the data transmission function.

Later in R15, other Dual Connectivity (DC) modes will be supported, namely NR and E-UTRA Dual Connectivity (NE-DC), 5GC-EN-DC, NR DC. For EN-DC, the core network connected to the access network is the Evolved Packet Core network (EPC), while the core network connected to other DC modes is the 5G Core Network (5GC).

In Multi-RAT Dual Connectivity (MR-DC), referring to Figure 2, the bearer types are divided into MN-terminated MCG bearer (MN terminated MCG Bearer), MN-terminated SCG bearer (MN terminated SCG Bearer), MN terminated split bearer (MN terminated split Bearer), SN terminated MCG bearer (SN terminated MCG Bearer), SN terminated SCG bearer (SN terminated SCG Bearer), SN terminated split bearer (SN terminated split Bearer). Among them, "MN terminated" means that the corresponding Packet Data Convergence Protocol (PDCP) resource (ie PDCP entity) is located on the MN side, and "SN terminated" means The PDCP resource used by the bearer is located on the SN side. "MCG bearer" means that the RLC/MAC/PHY resources used by the bearer are located on the MN side, "SCG bearer" means that the RLC/MAC/PHY resources used by the bearer are located on the SN side, and "offload bearer" means that the bearer uses RLC/MAC/PHY resources are located on the MN and SN sides.

In order to support the energy saving of terminal equipment and the rapid establishment of SCG, the standard agrees to support the concept of dormancy SCG. Dormancy SCG means that all cells in the SCG are in the dormancy state, and the cells in the dormancy state do not monitor the physical downlink control channel (Physical Downlink Control Channel). Control Channel, PDCCH), does not perform data transmission and reception, but performs radio resource management (Radio Resource Management, RRM), channel status indicator (Channel Status Indicator, CSI) measurement and beam management.

In addition, the SCG may also be in a deactivated state or an activated state, the SCG enters the deactivated state after being deactivated, and the SCG enters the activated state after being activated. The resources occupied by the SCG side are different when the SCG is in the activated state compared to the SCG in the deactivated state. Supporting the activation of SCG is a problem that needs to be clarified, that is, how to ensure that the SCG can work normally and effectively after being activated needs to be solved.

To this end, the following technical solutions of the embodiments of the present application are proposed. It should be noted that, the description of the "MCG side" in the embodiments of the present application may also be referred to as the "MN side", and the description of the "SCG side" may also be referred to as the "SN side".

FIG. 3 is a schematic flowchart of an information indication method provided by an embodiment of the present application. As shown in FIG. 3 , the information indication method includes the following steps:

Step 301: The network device sends an SCG activation command to the terminal device, the terminal device receives the SCG activation command, and the SCG activation command is used to activate the SCG; wherein, the SCG activation command carries indication information, and the indication information is used to indicate the Whether to perform the specified behavior after the terminal device SCG is activated.

The technical solutions of the embodiments of the present application are applied to the DC architecture, the master node in the DC is the MN, and the secondary node in the DC is the SN, that is, the MN and the SN are two nodes of the DC. The cell group on the MN side is called MCG, and the cell group on the SN side is called SCG. This embodiment of the present application does not limit the type of DC, for example, it may be MR-DC, EN-DC, NE-DC, NR-DC, and so on.

In this embodiment of the present application, the network device may be a base station or a wireless network access node. In a DC architecture, the network device may be a MN.

In an optional manner of the present application, the SCG activation command is carried in Radio Resource Control (Radio Resource Control, RRC) signaling or Media Access Control (Media Access Control, MAC) Control Element (Control Element, CE) or downlink Control information (Downlink Control Information, DCI).

In this embodiment of the present application, the SCG activation command carries indication information, and the indication information is used to indicate whether the terminal device performs a specified behavior after the SCG is activated. Here, the SCG activation command may carry one or more indication information, and the indication information carried in the SCG activation command will be described below.

(1) Key update after SCG activation

The SCG activation command carries first indication information, and the first indication information is used to indicate whether the terminal device needs to update the secret key on the SCG side after the SCG is activated.

A) In an optional manner, if the first indication information indicates that the terminal device needs to update the secret key on the SCG side after the SCG is activated, the terminal device determines the new secret key on the SCG side, and uses the new secret key on the SCG side. The secret key on the SCG side performs security processing on the SN-terminated bearer.

It should be noted that the "key of the new SCG side" is relative to the "key of the original SCG side", and the key of the original SCG side refers to the last time used by the terminal device and the SCG side of the SCG side. Secret key. The "key on the new SCG side" may also be referred to as the "key on the updated SCG side".

In the above solution, the secret key on the new SCG side can be determined in the following ways:

Manner 1: The first indication information is used to indicate a new SCG counter; the terminal device determines the new SCG side secret key based on the new SCG counter and the MCG side secret key.

Mode 2: The first indication information is 1-bit indication information, and the value of the 1-bit indication information is the first value to indicate that the terminal device needs to update the secret key on the SCG side after the SCG is activated, and the 1-bit indication The value of the information is the second value to indicate that the terminal device does not need to update the secret key on the SCG side after the SCG is activated; when the value of the 1-bit indication information is the first value, the terminal device is based on the stored value. The SCG counter determines a new SCG counter, and based on the new SCG counter and the MCG side key, determines the new SCG side key.

In the above scheme, optionally, the value of the new SCG counter is equal to the value of the SCG counter stored by the terminal device plus 1.

In one example, the first value is 1 and the second value is 0. In another example, the first value is 0 and the second value is 1. If the 1-bit indication information indicates that the terminal device needs to update the secret key of the SCG side after the SCG is activated, the terminal device uses the currently stored SCG counter to determine the new SCG counter by default, and uses the new SCG counter to calculate the secret key of the SCG side.

It should be noted that the "new SCG counter" is relative to the "original SCG counter", and the original SCG counter refers to the most recent SCG counter used by the terminal device and the MN. The original SCG counter will be stored on the terminal equipment side and the MN side, and maintained on the MN side.

B) In an optional manner, if the first indication information indicates that the terminal equipment does not need to update the secret key of the SCG side after the SCG is activated, the terminal equipment uses the original secret key of the SCG side to the SN-terminated bearer Dispose of safely.

C) In an optional manner, in the case that the SCG activation command does not carry the first indication information, the terminal device uses the original key of the SCG side to perform security processing on the SN-terminated bearer by default; or, the The terminal device uses the new SCG side secret key to securely process the SN-terminated bearer by default, the new SCG side secret key is determined based on the new SCG counter and the MCG side secret key, and the new SCG counter is based on the The SCG counter stored by the terminal device is determined.

D) In an optional manner, the first indication information is also used to indicate a new security algorithm; the terminal device determines the secret key of the SCG side based on the secret key of the SCG side and the new security algorithm A new key on the SCG side is determined, and the SN-terminated bearer is securely processed by using the new key on the SCG side.

Here, the first indication information is also used to indicate a new security algorithm, which specifically means: the first indication information is also used to indicate an identifier of a new security algorithm.

It should be noted that the "new security algorithm" is relative to the "original security algorithm", and the original security algorithm refers to the security algorithm used last time by the terminal device and the MN. The identity of the original security algorithm and/or the security algorithm configuration will be saved on the terminal device side and the MN side.

In this embodiment of the present application, the security algorithm includes an encryption algorithm and/or an integrity protection algorithm. After acquiring the new security algorithm, the terminal device regenerates a new secret key on the SCG side according to the new security algorithm, specifically, generates a new secret key on the SCG side according to the new security algorithm and the previously determined secret key on the SCG side. Secret key.

Here, the "previously determined secret key of the SCG side" may be the "original secret key of the SCG side" mentioned in the above scheme or the "new secret key of the SCG side determined according to the above scheme A) or scheme C). key".

It should be noted that the SN-terminated bearer in the above solution includes at least one of the following: SN-terminated SCG bearer, SN-terminated offload bearer, and SN-terminated MCG bearer.

It should be noted that the security processing in the above solution includes at least one of the following: encryption processing and integrity protection processing; or, the security processing includes at least one of the following: decryption processing and integrity protection verification processing. For example, for the uplink, the terminal device uses the new SCG side key or the original SCG side key to encrypt and/or integrity protect the SN-terminated bearer. For the downlink, the terminal device decrypts and/or integrity protects the SN-terminated bearer using the new SCG side secret key or the original SCG side secret key.

It should be noted that the above scheme D) may be implemented in combination with the above scheme A) or scheme C), or the above scheme A) or scheme B) or scheme C) or scheme D) may also be implemented independently.

In the embodiment of the present application, optionally, if the terminal device needs to update the secret key on the SCG side after the SCG is activated, before the MN sends the SCG activation command to the terminal device, the MN sends the new secret key on the SCG side to the SCG, At the same time, it is indicated to the SCG that the SCG enters the active state. Here, the MN determines the key method of the new SCG side by referring to the foregoing terminal device to determine the key method of the new SCG side.

(2) Random access process after SCG activation

The SCG activation command carries second indication information, where the second indication information is used to indicate whether the terminal device needs to initiate a random access procedure to the SCG after the SCG is activated.

I) In an optional manner, the second indication information includes 1-bit indication information, and the value of the 1-bit indication information is the first value to indicate that the terminal device needs to initiate random access to the SCG after the SCG is activated The second value of the 1-bit indication information is used to indicate that the terminal device does not need to initiate a random access procedure to the SCG after the SCG is activated.

In one example, the first value is 1 and the second value is 0. In another example, the first value is 0 and the second value is 1.

II) In an optional manner, when the second indication information includes the first configuration information, the second indication information indicates that the terminal device needs to initiate a random access procedure to the SCG after the SCG is activated; the second indication information If the indication information does not include the first configuration information, the second indication information indicates that the terminal device does not need to initiate a random access procedure to the SCG after the SCG is activated; wherein the first configuration information is used to determine to initiate random access Carrier and/or dedicated RACH resources for the process.

In an example, the first configuration information included in the second indication information is used to indicate whether a carrier (carrier) used for initiating the random access procedure is a normal uplink (normal UL) carrier or a supplemental uplink (SUL) carrier.

In an example, the first configuration information included in the second indication information is used to indicate a dedicated RACH resource used for initiating a random access procedure, such as a dedicated preamble and a dedicated random access opportunity (RO).

It should be noted that the above I) scheme can be implemented in combination with the above II) scheme, or the above I) scheme and the above II) scheme can also be implemented independently.

In an optional manner, if the second indication information does not include the first configuration information, the terminal device is implicitly indicated that it does not need to initiate a random access procedure to the SCG.

In this embodiment of the present application, optionally, before the MN sends the SCG activation command to the terminal device, the MN sends the SCG activation command to the SN to trigger the SCG to enter the activated state, and the SN sends a confirmation message to the MN, and configures the The first configuration information, such as dedicated RACH resources.

In an example, the configuration of the first configuration information may refer to Table 1 and Table 2 below. The first configuration information is configured in Table 1 to indicate whether the carrier used for initiating the random access procedure is a normal uplink (normal UL) carrier or a supplemental uplink (SUL) carrier. The first configuration information is configured in Table 2 to indicate the dedicated RACH resource used for initiating the random access procedure.

Table 1

Table 2

(3) SRS triggering and TA acquisition after SCG activation

The SCG activation command carries third indication information, where the third indication information is used to trigger the terminal device to send an aperiodic sounding reference signal (Sounding Reference Signal, SRS) to the SCG after the SCG is activated.

In an optional manner, the third indication information is used to indicate at least one of the following:

Resource set identifier of aperiodic SRS;

Send time domain location information of aperiodic SRS;

The length of time between the first time and the second time, where the first time is the time when the terminal device receives the SCG activation command or the DCI corresponding to the SCG activation command, and the second time is the time when the aperiodic SRS is sent ;

Length of time for sending aperiodic SRS.

In the above solution, the resource set identifier of the aperiodic SRS is, for example: srs-ResourceSetId.

In the above solution, optionally, the time domain location information of the aperiodic SRS is sent, including at least one of the following: an SFN number (SFN number), a subframe number (subframe number), and a slot number (slot number).

In the above solution, optionally, the time length between the first moment and the second time may pass through several time slots, for example, N time slots, where N is a positive integer.

The terminal device sends the aperiodic SRS according to the above content indicated by the third indication information.

In an optional manner, the third indication information is further used to indicate an initial timing advance (TA) value for sending the aperiodic SRS. The terminal device determines the timing information for sending the aperiodic SRS according to the initial TA value, and sends the aperiodic SRS according to the timing information.

In this embodiment of the present application, the aperiodic SRS is used for the SCG to determine the first TA value; the method further includes:

The network device sends second configuration information to the terminal device, and the terminal device receives the second configuration information, where the second configuration information is used to determine the first TA value; the terminal device is based on the first TA value. TA value, determine the actual TA, and the actual TA is used for the terminal equipment to perform uplink synchronization.

Specifically, after the terminal device sends the aperiodic SRS, the network device measures the aperiodic SRS, calculates the first TA value according to the measurement result, and configures the first TA value to the terminal device through the second configuration information.

In an optional manner, if the third indication information does not indicate an initial TA value, the terminal device determines an actual TA based on the first TA value. Specifically, if the network device does not configure the initial TA value to the terminal device, the first TA value calculated by the network device is the absolute TA value used by the terminal device to calculate the actual TA value.

In another optional manner, if the third indication information does not indicate an initial TA value, the terminal device determines an actual TA based on the first TA value and the initial TA value. Specifically, if the network device configures the initial TA value for the terminal device, the first TA value calculated by the network device is the relative TA value used by the terminal device to calculate the actual TA value (that is, the TA value relative to the initial TA value). ), the terminal device adds the first TA value and the initial TA value to calculate the actual TA. It should be noted that the initial TA value and the first TA value have the same unit, but are different from the actual TA value.

(4) Bearer change after SCG activation

The SCG activation command carries third configuration information, where the third configuration information is used to determine the configuration information of the bearer, and the configuration information of the bearer is used to determine the bearer type and/or bearer configuration changed after the SCG is activated.

It should be noted that the bearer in the above solution includes at least one of the following: MN-terminated bearer and SN-terminated bearer. After the SCG is activated, MN-terminated bearers and/or SN-terminated bearers may have bearer type changes and/or bearer configuration changes. The terminal device may change the corresponding bearer type and/or change the corresponding bearer configuration according to the third configuration information.

In this embodiment of the present application, optionally, before the MN sends the SCG activation command to the terminal device, the MN sends a bearer change request to the SN, so as to complete the bearer change on the network side.

It should be noted that, the above-mentioned solutions related to the indication information may be implemented independently, or may be implemented in combination.

FIG. 4 is a schematic structural diagram 1 of an information indication apparatus provided by an embodiment of the present application, which is applied to a terminal device. As shown in FIG. 4 , the information indication apparatus includes:

A receiving unit 401, configured to receive an SCG activation command, where the SCG activation command is used to activate the SCG;

In an optional manner, the SCG activation command carries first indication information, and the first indication information is used to indicate whether the terminal device needs to update the secret key on the SCG side after the SCG is activated.

In an optional manner, if the first indication information indicates that the terminal device needs to update the secret key on the SCG side after the SCG is activated, the apparatus further includes:

The processing unit 402 is configured to determine a new secret key on the SCG side, and use the new secret key on the SCG side to perform security processing on the SN-terminated bearer.

In an optional manner, the first indication information is used to indicate a new SCG counter;

The processing unit 402 is configured to determine a new key on the SCG side based on the new SCG counter and the key on the MCG side.

In an optional manner, the first indication information is 1-bit indication information, and the value of the 1-bit indication information is the first value used to indicate that the terminal device needs to update the secret key on the SCG side after the SCG is activated, so The value of the 1-bit indication information is the second value to indicate that the terminal device does not need to update the secret key on the SCG side after the SCG is activated;

In the case where the value of the 1-bit indication information is the first value, the processing unit is configured to determine a new SCG counter based on the stored SCG counter, and based on the new SCG counter and the MCG side key, determine The key for the new SCG side.

In an optional manner, if the first indication information indicates that the terminal device does not need to update the secret key on the SCG side after the SCG is activated, the apparatus further includes:

The processing unit 402 is configured to use the original secret key of the SCG side to perform security processing on the SN-terminated bearer.

In an optional manner, in the case where the SCG activation command does not carry the first indication information, the first indication information is used to indicate whether the terminal device needs to update the secret key on the SCG side after the SCG is activated, then the apparatus Also includes:

The processing unit 402 is used to perform security processing on the SN-terminated bearer by using the original key of the SCG side by default; The key is determined based on the new SCG counter and the MCG side key, and the new SCG counter is determined based on the SCG counter stored by the terminal device.

In an optional manner, the value of the new SCG counter is equal to the value of the SCG counter stored by the terminal device plus 1.

In an optional manner, the first indication information is further used to indicate a new security algorithm; the apparatus further includes:

The processing unit 402 is configured to determine the secret key of the SCG side, determine the secret key of the new SCG side based on the secret key of the SCG side and the new security algorithm, and use the new secret key of the SCG side to terminate the SN The bearer is handled securely.

In an optional manner, the security processing includes at least one of the following: encryption processing, integrity protection processing; or,

The security processing includes at least one of the following: decryption processing, integrity protection verification processing.

In an optional manner, the SCG activation command carries second indication information, where the second indication information is used to indicate whether the terminal device needs to initiate a random access procedure to the SCG after the SCG is activated.

In an optional manner, the second indication information includes 1-bit indication information, and the value of the 1-bit indication information is a first value used to indicate that the terminal device needs to initiate a random access procedure to the SCG after the SCG is activated, The value of the 1-bit indication information is the second value to indicate that the terminal device does not need to initiate a random access procedure to the SCG after the SCG is activated.

In an optional manner, when the second indication information includes the first configuration information, the second indication information indicates that the terminal device needs to initiate a random access procedure to the SCG after the SCG is activated;

In the case that the second indication information does not include the first configuration information, the second indication information indicates that the terminal device does not need to initiate a random access procedure to the SCG after the SCG is activated;

Wherein, the first configuration information is used to determine the carrier and/or the dedicated RACH resource for initiating the random access procedure.

In an optional manner, the SCG activation command carries third indication information, and the third indication information is used to trigger the terminal device to send an aperiodic SRS to the SCG after the SCG is activated.

Resource set identifier of aperiodic SRS;

Send time domain location information of aperiodic SRS;

The length of time between the first time and the second time, where the first time is the time when the terminal device receives the SCG activation command or the downlink control information DCI corresponding to the SCG activation command, and the second time is the sending aperiodic Moment of SRS;

Length of time for sending aperiodic SRS.

In an optional manner, the third indication information is further used to indicate the initial TA value for sending the aperiodic SRS.

In an optional manner, the aperiodic SRS is used for the SCG to determine the first TA value;

The receiving unit 401 is further configured to receive second configuration information, where the second configuration information is used to determine the first TA value;

The apparatus further includes: a processing unit 402, configured to determine an actual TA based on the first TA value, where the actual TA is used for the terminal equipment to perform uplink synchronization.

In an optional manner, the processing unit 402 is configured to determine the actual TA based on the first TA value if the third indication information does not indicate the initial TA value; if the third indication information does not indicate the initial TA value TA value, the actual TA is determined based on the first TA value and the initial TA value.

In an optional manner, the SCG activation command carries third configuration information, and the third configuration information is used to determine the configuration information of the bearer, and the configuration information of the bearer is used to determine the modified bearer type and / or bearer configuration.

In an optional manner, the SCG activation command is carried in RRC signaling or MAC CE or DCI.

It should be understood by those skilled in the art that the relevant description of the above-mentioned information indicating device in the embodiment of the present application can be understood by referring to the relevant description of the information indicating method in the embodiment of the present application.

FIG. 5 is a second schematic diagram of the structure and composition of an information indicating device provided by an embodiment of the present application, which is applied to a network device. As shown in FIG. 5 , the information indicating device includes:

a sending unit 501, configured to send an SCG activation command to a terminal device, where the SCG activation command is used to activate the SCG;

In an optional manner, the first indication information is used to indicate a new SCG counter; the new SCG counter is used for the terminal device to determine the secret key of the new SCG side.

In an optional manner, the first indication information is 1-bit indication information, and the value of the 1-bit indication information is the first value used to indicate that the terminal device needs to update the secret key on the SCG side after the SCG is activated, so The value of the 1-bit indication information is the second value to indicate that the terminal device does not need to update the secret key on the SCG side after the SCG is activated.

In an optional manner, the first indication information is further used to indicate a new security algorithm; the new security algorithm is used for the terminal device to determine a new key on the SCG side.

Resource set identifier of aperiodic SRS;

Send time domain location information of aperiodic SRS;

Length of time for sending aperiodic SRS.

The sending unit 501 is further configured to send second configuration information to the terminal device, where the second configuration information is used to determine the first TA value; the first TA value is used by the terminal device to determine the actual TA, the actual TA is used for the terminal equipment to perform uplink synchronization.

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

Optionally, as shown in FIG. 6 , the communication device 600 may further include a memory 620 . The processor 610 may call and run a computer program from the memory 620 to implement the methods in the embodiments 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 .

Optionally, as shown in FIG. 6 , the communication device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive other devices Information or data sent by a device.

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

Optionally, the communication device 600 may specifically be the network device in this embodiment of the present application, and the communication device 600 may implement the corresponding processes implemented by the network device in each method in the embodiment of the present application. For the sake of brevity, details are not repeated here. .

Optionally, the communication device 600 may specifically be the mobile terminal/terminal device of the embodiments of the present application, and the communication device 600 may implement the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, for the sake of brevity. , and will not be repeated here.

FIG. 7 is a schematic structural diagram of a chip according to an embodiment of the present application. The chip 700 shown in FIG. 7 includes a processor 710, and the processor 710 can call and run a computer program from a memory, so as to implement the method in this embodiment of the present application.

Optionally, as shown in FIG. 7 , the chip 700 may further include a memory 720 . The processor 710 may call and run a computer program from the memory 720 to implement the methods in the embodiments of the present application.

The memory 720 may be a separate device independent of the processor 710 , or may be integrated in the processor 710 .

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

Optionally, the chip 700 may 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.

Optionally, the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding processes implemented by the network device in each method of the embodiment of the present application, which is not repeated here for brevity.

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 implemented by the mobile terminal/terminal device in each method of the embodiments of the present application. For brevity, here No longer.

It should be understood that the chip mentioned in the embodiments of the present application may also be referred to as a system-on-chip, a system-on-chip, a system-on-chip, or a system-on-a-chip, or the like.

FIG. 8 is a schematic block diagram of a communication system 800 provided by an embodiment of the present application. As shown in FIG. 8 , the communication system 800 includes a terminal device 810 and a network device 820 .

The terminal device 810 can be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 820 can be used to implement the corresponding functions implemented by the network device in the above method. For brevity, details are not repeated here. .

It should be understood that the processor in this embodiment of the present application may be an integrated circuit chip, which has a signal processing capability. In the implementation process, each step of the above method embodiments may be completed by a hardware integrated logic circuit in a processor or an instruction in the form of software. The above-mentioned processor can be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an off-the-shelf programmable gate array (Field Programmable Gate Array, FPGA) or other available Programming logic devices, discrete gate or transistor logic devices, discrete hardware components. The methods, steps, and logic block diagrams disclosed in the embodiments of this application can be implemented or executed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied as executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules may be located in random access memory, flash memory, read-only memory, programmable read-only memory or electrically erasable programmable memory, registers and other storage media mature in the art. The storage medium is located in the memory, and the processor reads the information in the memory, and completes the steps of the above method in combination with its hardware.

It can be understood that the memory in this embodiment of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. Wherein, the non-volatile memory may 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 programmable read-only memory (Erasable PROM, EPROM). Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory. Volatile memory may be Random Access Memory (RAM), which acts as an external cache. By way of illustration and not limitation, many forms of RAM are available, such as Static RAM (SRAM), Dynamic RAM (DRAM), 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 systems and methods described herein is intended to include, but not be limited to, these and any other suitable types of memory.

It should be understood that the above memory is an example but not a limitative description, for example, the memory in the embodiment of the present application may also be a static random access memory (static RAM, SRAM), a 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 connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. 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.

Embodiments of the present application further provide a computer-readable storage medium for storing a computer program.

Optionally, the computer-readable storage medium can be applied to the network device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding processes implemented by the network device in the various methods of the embodiments of the present application. For brevity, here No longer.

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 each method of the embodiments of the present application. , and are not repeated here for brevity.

Embodiments of the present application also provide a computer program product, including computer program instructions.

Optionally, the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. Repeat.

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 instructions cause the computer to execute the corresponding processes implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, For brevity, details are not repeated here.

The embodiments of the present application also provide a computer program.

Optionally, the computer program can be applied to the network device in the embodiments of the present application. When the computer program is run on the computer, it causes the computer to execute the corresponding processes implemented by the network device in each method of the embodiments of the present application. For the sake of brevity. , and will not be repeated here.

Optionally, the computer program may be applied to the mobile terminal/terminal device in the embodiments of the present application, and when the computer program is run on the computer, the mobile terminal/terminal device implements the various methods of the computer program in the embodiments of the present application. The corresponding process, for the sake of brevity, will not be repeated here.

Those of ordinary skill in the art can realize 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. Skilled artisans may implement the described functionality using different methods for each particular application, but such implementations should not be considered beyond the scope of this application.

Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working process of the above-described systems, devices and units may refer to the corresponding processes in the foregoing method embodiments, which will not be repeated here.

In the several embodiments provided in this application, it should be understood that the disclosed system, apparatus and method may be implemented in other manners. For example, the apparatus embodiments described above are only illustrative. For example, the division of the units is only a logical function division. In actual implementation, there may be other division methods. For example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented. On the other hand, the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.

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

In addition, each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.

The functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present application can be embodied in the form of a software product in essence, or the part that contributes to the prior art or the part of the technical solution. The computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may 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: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

The above are only specific implementations of the present application, but the protection scope of the present application is not limited to this. should be covered within the scope of protection of this application. Therefore, the protection scope of the present application should be based on the protection scope of the claims.

Claims

An information indication method, the method comprising:

The terminal device receives a secondary cell group SCG activation command, where the SCG activation command is used to activate the SCG;

Wherein, the SCG activation command carries indication information, and the indication information is used to indicate whether the terminal device performs a specified behavior after the SCG is activated.
The method according to claim 1, wherein the SCG activation command carries first indication information, and the first indication information is used to indicate whether the terminal device needs to update the secret key on the SCG side after the SCG is activated.
The method according to claim 2, wherein, if the first indication information indicates that the terminal device needs to update the secret key on the SCG side after the SCG is activated, the method further comprises:

The terminal device determines a new secret key on the SCG side, and uses the new secret key on the SCG side to perform security processing on the bearer terminated by the secondary node SN.
The method according to claim 3, wherein the first indication information is used to indicate a new SCG count value counter;

The terminal device determines the secret key on the new SCG side, including:

The terminal device determines the new SCG side secret key based on the new SCG counter and the MCG side secret key.
The method according to claim 3, wherein the first indication information is 1-bit indication information, and the value of the 1-bit indication information is a first value used to indicate that the terminal device needs to update the SCG side after the SCG is activated. secret key, the value of the 1-bit indication information is the second value to indicate that the terminal device does not need to update the secret key on the SCG side after the SCG is activated;

In the case where the value of the 1-bit indication information is the first value, the terminal device determines the new secret key on the SCG side, including:

The terminal device determines a new SCG counter based on the stored SCG counter, and determines a new SCG side key based on the new SCG counter and the MCG side key.
The method according to claim 2, wherein, if the first indication information indicates that the terminal device does not need to update the secret key on the SCG side after the SCG is activated, the method further comprises:

The terminal device uses the original secret key on the SCG side to perform security processing on the SN-terminated bearer.
The method according to claim 1, wherein when the SCG activation command does not carry first indication information, the first indication information is used to indicate whether the terminal device needs to update the secret key on the SCG side after the SCG is activated, The method also includes:

The terminal device uses the original secret key on the SCG side to perform security processing on the SN-terminated bearer by default; or,

The terminal device uses the new SCG side secret key to securely process the SN-terminated bearer by default, the new SCG side secret key is determined based on the new SCG counter and the MCG side secret key, and the new SCG counter is based on. The SCG counter stored by the terminal device is determined.
The method according to claim 5 or 7, wherein the value of the new SCG counter is equal to the value of the SCG counter stored by the terminal device plus 1.
The method according to any one of claims 2 to 6, wherein the first indication information is further used to indicate a new security algorithm; the method further comprises:

The terminal device determines the secret key of the SCG side, determines the secret key of the new SCG side based on the secret key of the SCG side and the new security algorithm, and uses the new secret key of the SCG side to the SN-terminated bearer Dispose of safely.
The method of any one of claims 3 to 9, wherein,

The security processing includes at least one of the following: encryption processing, integrity protection processing; or,

The security processing includes at least one of the following: decryption processing, integrity protection verification processing.
The method according to any one of claims 1 to 10, wherein the SCG activation command carries second indication information, and the second indication information is used to indicate whether the terminal device needs to initiate a random connection to the SCG after the SCG is activated. into the process.
The method according to claim 11, wherein the second indication information comprises 1-bit indication information, and the value of the 1-bit indication information is a first value to indicate that the terminal device needs to initiate randomization to the SCG after the SCG is activated In the access process, the value of the 1-bit indication information is the second value to indicate that the terminal device does not need to initiate a random access process to the SCG after the SCG is activated.
A method according to claim 11 or 12, wherein,

When the second indication information includes the first configuration information, the second indication information indicates that the terminal equipment needs to initiate a random access procedure to the SCG after the SCG is activated;

In the case where the second indication information does not include the first configuration information, the second indication information indicates that the terminal device does not need to initiate a random access procedure to the SCG after the SCG is activated;

Wherein, the first configuration information is used to determine the carrier and/or the dedicated RACH resource for initiating the random access procedure.
The method according to any one of claims 1 to 13, wherein the SCG activation command carries third indication information, and the third indication information is used to trigger the terminal device to send a non-volatile message to the SCG after the SCG is activated. Periodic sounding reference signal SRS.
The method according to claim 14, wherein the third indication information is used to indicate at least one of the following:

Resource set identifier of aperiodic SRS;

Send time domain location information of aperiodic SRS;

The length of time between the first time and the second time, where the first time is the time when the terminal device receives the SCG activation command or the downlink control information DCI corresponding to the SCG activation command, and the second time is the sending aperiodic Moment of SRS;

Length of time for sending aperiodic SRS.
The method according to claim 15, wherein the third indication information is further used to indicate an initial timing advance TA value for sending the aperiodic SRS.
The method of claim 16, wherein the aperiodic SRS is used for the SCG to determine a first TA value; the method further comprises:

receiving, by the terminal device, second configuration information, where the second configuration information is used to determine the first TA value;

The terminal device determines an actual TA based on the first TA value, and the actual TA is used for the terminal device to perform uplink synchronization.
The method of claim 17, wherein the terminal device determines an actual TA based on the first TA value, comprising:

If the third indication information does not indicate an initial TA value, the terminal device determines an actual TA based on the first TA value;

If the third indication information does not indicate an initial TA value, the terminal device determines an actual TA based on the first TA value and the initial TA value.
The method according to any one of claims 1 to 18, wherein the SCG activation command carries third configuration information, and the third configuration information is used to determine the configuration information of the bearer, and the configuration information of the bearer is used for Determines the bearer type and/or bearer configuration changed after the SCG is activated.
The method according to any one of claims 1 to 19, wherein the SCG activation command is carried in radio resource control RRC signaling or medium access control MAC control element CE or DCI.
An information indication method, the method comprising:

The network device sends an SCG activation command to the terminal device, where the SCG activation command is used to activate the SCG;

Wherein, the SCG activation command carries indication information, and the indication information is used to indicate whether the terminal device performs a specified behavior after the SCG is activated.
The method according to claim 21, wherein the SCG activation command carries first indication information, and the first indication information is used to indicate whether the terminal device needs to update the secret key on the SCG side after the SCG is activated.
The method according to claim 22, wherein the first indication information is used to indicate a new SCG counter; the new SCG counter is used for the terminal device to determine the secret key of the new SCG side.
The method according to claim 22, wherein the first indication information is 1-bit indication information, and the value of the 1-bit indication information is a first value used to indicate that the terminal device needs to update the SCG side after the SCG is activated. secret key, the value of the 1-bit indication information is the second value to indicate that the terminal device does not need to update the secret key on the SCG side after the SCG is activated.
The method according to any one of claims 22 to 24, wherein the first indication information is further used to indicate a new security algorithm; the new security algorithm is used for the terminal device to determine the new SCG side Secret key.
The method according to any one of claims 21 to 25, wherein the SCG activation command carries second indication information, and the second indication information is used to indicate whether the terminal device needs to initiate a random connection to the SCG after the SCG is activated. into the process.
The method according to claim 26, wherein the second indication information comprises 1-bit indication information, and the value of the 1-bit indication information is a first value to indicate that the terminal device needs to initiate randomization to the SCG after the SCG is activated In the access process, the value of the 1-bit indication information is the second value to indicate that the terminal device does not need to initiate a random access process to the SCG after the SCG is activated.
The method of claim 26 or 27, wherein,

When the second indication information includes the first configuration information, the second indication information indicates that the terminal equipment needs to initiate a random access procedure to the SCG after the SCG is activated;

In the case that the second indication information does not include the first configuration information, the second indication information indicates that the terminal device does not need to initiate a random access procedure to the SCG after the SCG is activated;

Wherein, the first configuration information is used to determine the carrier and/or the dedicated RACH resource for initiating the random access procedure.
The method according to any one of claims 21 to 28, wherein the SCG activation command carries third indication information, and the third indication information is used to trigger the terminal device to send a non-volatile message to the SCG after the SCG is activated. Period SRS.
The method according to claim 29, wherein the third indication information is used to indicate at least one of the following:

Resource set identifier of aperiodic SRS;

Send time domain location information of aperiodic SRS;

The length of time between the first time and the second time, where the first time is the time when the terminal device receives the SCG activation command or the DCI corresponding to the SCG activation command, and the second time is the time when the aperiodic SRS is sent ;

Length of time for sending aperiodic SRS.
The method according to claim 30, wherein the third indication information is further used to indicate an initial TA value for sending aperiodic SRS.
The method of claim 31, wherein the aperiodic SRS is used for the SCG to determine a first TA value; the method further comprising:

The network device sends second configuration information to the terminal device, where the second configuration information is used to determine the first TA value; the first TA value is used by the terminal device to determine the actual TA, the actual TA value is TA is used for the terminal equipment to perform uplink synchronization.
The method according to any one of claims 21 to 32, wherein the SCG activation command carries third configuration information, and the third configuration information is used to determine the configuration information of the bearer, and the configuration information of the bearer is used for Determines the bearer type and/or bearer configuration changed after the SCG is activated.
The method according to any one of claims 21 to 33, wherein the SCG activation command is carried in RRC signaling or MAC CE or DCI.
An information indicating device, applied to terminal equipment, the device comprising:

a receiving unit, configured to receive an SCG activation command, where the SCG activation command is used to activate the SCG;

Wherein, the SCG activation command carries indication information, and the indication information is used to indicate whether the terminal device performs a specified behavior after the SCG is activated.
The apparatus according to claim 35, wherein the SCG activation command carries first indication information, and the first indication information is used to indicate whether the terminal device needs to update the secret key on the SCG side after the SCG is activated.
The apparatus according to claim 36, wherein, if the first indication information indicates that the terminal device needs to update the secret key on the SCG side after the SCG is activated, the apparatus further comprises:

The processing unit is configured to determine a new secret key on the SCG side, and use the new secret key on the SCG side to perform security processing on the SN-terminated bearer.
The apparatus according to claim 37, wherein the first indication information is used to indicate a new SCG counter;

The processing unit is configured to determine the new SCG side secret key based on the new SCG counter and the MCG side secret key.
The apparatus according to claim 37, wherein the first indication information is 1-bit indication information, and the value of the 1-bit indication information is a first value used to indicate that the terminal device needs to update the SCG side after the SCG is activated. secret key, the value of the 1-bit indication information is the second value to indicate that the terminal device does not need to update the secret key on the SCG side after the SCG is activated;

In the case where the value of the 1-bit indication information is the first value, the processing unit is configured to determine a new SCG counter based on the stored SCG counter, and based on the new SCG counter and the MCG side key, determine The key for the new SCG side.
The apparatus according to claim 36, wherein, if the first indication information indicates that the terminal device does not need to update the secret key on the SCG side after the SCG is activated, the apparatus further comprises:

The processing unit is used to perform security processing on the SN-terminated bearer by using the original key on the SCG side.
The apparatus according to claim 35, wherein, if the SCG activation command does not carry the first indication information, the first indication information is used to indicate whether the terminal device needs to update the secret key on the SCG side after the SCG is activated, Then the device further includes:

The processing unit is configured to use the original secret key of the SCG side to perform security processing on the SN-terminated bearer by default; or, to use the new SCG side secret key to perform security processing on the SN-terminated bearer by default. The secret key is determined based on the new SCG counter and the MCG side secret key, and the new SCG counter is determined based on the SCG counter stored by the terminal device.
The apparatus according to claim 39 or 41, wherein the value of the new SCG counter is equal to the value of the SCG counter stored by the terminal device plus 1.
The apparatus according to any one of claims 36 to 40, wherein the first indication information is further used to indicate a new security algorithm; the apparatus further comprises:

The processing unit is configured to determine the secret key of the SCG side, determine the secret key of the new SCG side based on the secret key of the SCG side and the new security algorithm, and use the new secret key of the SCG side to SN-terminated The bearer is handled securely.
An apparatus according to any one of claims 37 to 43, wherein,

The security processing includes at least one of the following: encryption processing, integrity protection processing; or,

The security processing includes at least one of the following: decryption processing, integrity protection verification processing.
The apparatus according to any one of claims 35 to 44, wherein the SCG activation command carries second indication information, and the second indication information is used to indicate whether the terminal device needs to initiate random access to the SCG after the SCG is activated into the process.
The apparatus according to claim 45, wherein the second indication information comprises 1-bit indication information, and the value of the 1-bit indication information is a first value to indicate that the terminal device needs to initiate random access to the SCG after the SCG is activated In the access process, the value of the 1-bit indication information is the second value to indicate that the terminal device does not need to initiate a random access process to the SCG after the SCG is activated.
An apparatus according to claim 45 or 46, wherein,

In the case where the second indication information includes the first configuration information, the second indication information indicates that the terminal device needs to initiate a random access procedure to the SCG after the SCG is activated;

In the case that the second indication information does not include the first configuration information, the second indication information indicates that the terminal device does not need to initiate a random access procedure to the SCG after the SCG is activated;

Wherein, the first configuration information is used to determine the carrier and/or the dedicated RACH resource for initiating the random access procedure.
The apparatus according to any one of claims 35 to 47, wherein the SCG activation command carries third indication information, and the third indication information is used to trigger the terminal device to send a non-volatile message to the SCG after the SCG is activated. Period SRS.
The apparatus according to claim 48, wherein the third indication information is used to indicate at least one of the following:

Resource set identifier of aperiodic SRS;

Send time domain location information of aperiodic SRS;

The length of time between the first time and the second time, where the first time is the time when the terminal device receives the SCG activation command or the downlink control information DCI corresponding to the SCG activation command, and the second time is the sending aperiodic Moment of SRS;

Length of time for sending aperiodic SRS.
The apparatus according to claim 49, wherein the third indication information is further used to indicate an initial TA value for sending aperiodic SRS.
The apparatus of claim 50, wherein the aperiodic SRS is used for the SCG to determine a first TA value;

The receiving unit is further configured to receive second configuration information, where the second configuration information is used to determine the first TA value;

The apparatus further includes: a processing unit configured to determine an actual TA based on the first TA value, where the actual TA is used for the terminal equipment to perform uplink synchronization.
The apparatus according to claim 51, wherein the processing unit is configured to determine an actual TA based on the first TA value if the third indication information does not indicate an initial TA value; if the third indication information does not indicate an initial TA value; If no initial TA value is indicated, then the actual TA is determined based on the first TA value and the initial TA value.
The apparatus according to any one of claims 35 to 52, wherein the SCG activation command carries third configuration information, and the third configuration information is used to determine the configuration information of the bearer, and the configuration information of the bearer is used for Determines the bearer type and/or bearer configuration changed after the SCG is activated.
The apparatus of any one of claims 35 to 53, wherein the SCG activation command is carried in RRC signaling or MAC CE or DCI.
An information indicating device, applied to network equipment, the device comprising:

a sending unit, configured to send an SCG activation command to the terminal device, where the SCG activation command is used to activate the SCG;

Wherein, the SCG activation command carries indication information, and the indication information is used to indicate whether the terminal device performs a specified behavior after the SCG is activated.
The apparatus according to claim 55, wherein the SCG activation command carries first indication information, and the first indication information is used to indicate whether the terminal device needs to update the secret key on the SCG side after the SCG is activated.
The apparatus according to claim 56, wherein the first indication information is used to indicate a new SCG counter; and the new SCG counter is used for the terminal device to determine the secret key of the new SCG side.
The apparatus according to claim 56, wherein the first indication information is 1-bit indication information, and the value of the 1-bit indication information is a first value used to indicate that the terminal device needs to update the SCG side after the SCG is activated. secret key, the value of the 1-bit indication information is the second value to indicate that the terminal device does not need to update the secret key on the SCG side after the SCG is activated.
The apparatus according to any one of claims 56 to 58, wherein the first indication information is further used to indicate a new security algorithm; the new security algorithm is used by the terminal device to determine the new SCG side Secret key.
The apparatus according to any one of claims 55 to 59, wherein the SCG activation command carries second indication information, and the second indication information is used to indicate whether the terminal device needs to initiate a random connection to the SCG after the SCG is activated. into the process.
The apparatus according to claim 60, wherein the second indication information includes 1-bit indication information, and the value of the 1-bit indication information is a first value to indicate that the terminal device needs to initiate randomization to the SCG after the SCG is activated. In the access process, the value of the 1-bit indication information is the second value to indicate that the terminal device does not need to initiate a random access process to the SCG after the SCG is activated.
An apparatus according to claim 60 or 61, wherein,

In the case where the second indication information includes the first configuration information, the second indication information indicates that the terminal device needs to initiate a random access procedure to the SCG after the SCG is activated;

In the case that the second indication information does not include the first configuration information, the second indication information indicates that the terminal device does not need to initiate a random access procedure to the SCG after the SCG is activated;

Wherein, the first configuration information is used to determine the carrier and/or the dedicated RACH resource for initiating the random access procedure.
The apparatus according to any one of claims 55 to 62, wherein the SCG activation command carries third indication information, and the third indication information is used to trigger the terminal device to send a non-volatile message to the SCG after the SCG is activated. Period SRS.
The apparatus according to claim 63, wherein the third indication information is used to indicate at least one of the following:

Resource set identifier of aperiodic SRS;

Send time domain location information of aperiodic SRS;

The length of time between the first time and the second time, where the first time is the time when the terminal device receives the SCG activation command or the DCI corresponding to the SCG activation command, and the second time is the time when the aperiodic SRS is sent ;

Length of time for sending aperiodic SRS.
The apparatus according to claim 64, wherein the third indication information is further used to indicate an initial TA value for sending aperiodic SRS.
The apparatus of claim 65, wherein the aperiodic SRS is used for the SCG to determine a first TA value;

The sending unit is further configured to send second configuration information to the terminal device, where the second configuration information is used to determine the first TA value; the first TA value is used by the terminal device to determine the actual TA , the actual TA is used for the terminal equipment to perform uplink synchronization.
The apparatus according to any one of claims 55 to 66, wherein the SCG activation command carries third configuration information, and the third configuration information is used to determine the configuration information of the bearer, and the configuration information of the bearer is used for Determines the bearer type and/or bearer configuration changed after the SCG is activated.
The apparatus of any one of claims 55 to 67, wherein the SCG activation command is carried in RRC signaling or MAC CE or DCI.
A terminal device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and executes any one of claims 1 to 20. Methods.
A network device, comprising: a processor and a memory, the memory is used to store a computer program, the processor is used to call and run the computer program stored in the memory, and executes any one of claims 21 to 34. Methods.
A chip, comprising: a processor for invoking and running a computer program from a memory, so that a device on which the chip is installed executes the method according to any one of claims 1 to 20.
A chip, comprising: a processor for invoking and running a computer program from a memory, so that a device on which the chip is installed performs the method as claimed in any one of claims 21 to 34.
A computer-readable storage medium storing a computer program that causes a computer to perform the method of any one of claims 1 to 20.
A computer-readable storage medium storing a computer program that causes a computer to perform the method of any one of claims 21 to 34.
A computer program product comprising computer program instructions that cause a computer to perform the method of any one of claims 1 to 20.
A computer program product comprising computer program instructions that cause a computer to perform the method of any of claims 21 to 34.
A computer program that causes a computer to perform the method of any one of claims 1 to 20.
A computer program that causes a computer to perform the method of any one of claims 21 to 34.