CN116114287A

CN116114287A - Information indication method and device, terminal equipment and network equipment

Info

Publication number: CN116114287A
Application number: CN202080105056.7A
Authority: CN
Inventors: 王淑坤; 徐婧; 付喆
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2020-11-27
Filing date: 2020-11-27
Publication date: 2023-05-12
Anticipated expiration: 2040-11-27
Also published as: WO2022110048A1; CN116114287B

Abstract

The embodiment of the application provides an information indication method and device, terminal equipment and network equipment, wherein the method comprises the following steps: the terminal equipment receives an SCG activation command of the secondary cell group, wherein the SCG activation command is used for activating SCG; the SCG activation command carries indication information, where the indication information is used to indicate whether the terminal device SCG performs a specified action after being activated.

Description

Information indication method and device, terminal equipment and network equipment

Technical Field

The embodiment of the application relates to the technical field of mobile communication, in particular to an information indication method and device, terminal equipment and network equipment.

Background

The secondary cell group (Secondary Cell Group, SCG) may be in an active state or a deactivated state. How to ensure that the SCG works properly and effectively needs to be solved after the SCG enters the activated state from the deactivated state.

Disclosure of Invention

The embodiment of the application provides an information indication method and device, terminal equipment and network equipment.

The information indication method provided by the embodiment of the application comprises the following steps:

the terminal equipment receives an SCG activation command, wherein the SCG activation command is used for activating SCG;

The SCG activation command carries indication information, where the indication information is used to indicate whether the terminal device SCG performs a specified action after being activated.

the network equipment sends an SCG activation command to the terminal equipment, wherein the SCG activation command is used for activating SCG; the SCG activation command carries indication information, where the indication information is used to indicate whether the terminal device SCG performs a specified action after being activated.

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

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

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

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

The terminal equipment provided by the embodiment of the application comprises 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 information indicating method.

The network device provided by the embodiment of the application comprises 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 information indicating method.

The chip provided by the embodiment of the application is used for realizing the information indication method.

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

The computer readable storage medium provided in the embodiments of the present application is used for storing a computer program, where the computer program makes a computer execute the above information indication method.

The computer program product provided by the embodiment of the application comprises computer program instructions, wherein the computer program instructions enable a computer to execute the information indication method.

The computer program provided in the embodiments of the present application, when executed on a computer, causes the computer to perform the information indication method described above.

Through the technical scheme, the terminal equipment can determine whether the SCG is activated to execute the specified action or not through the indication information carried in the SCG activation command, so that the SCG can normally and effectively work after being activated through the specified row.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:

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

fig. 2 is a schematic diagram of a bearer type provided in an embodiment of the present application;

fig. 3 is a flow chart of an information indication method provided in an embodiment of the present application;

fig. 4 is a schematic structural diagram of an information indicating device according to an embodiment of the present disclosure;

fig. 5 is a schematic diagram ii of the structural composition of the information indicating device according to the embodiment of the present application;

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

FIG. 7 is a schematic block diagram of a chip of an embodiment of the present application;

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

Detailed Description

The following description of the technical solutions in the embodiments of the present application will be made with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.

The technical solution of the embodiment of the application can be applied to various communication systems, for example: long term evolution (Long Term Evolution, LTE) systems, LTE frequency division duplex (Frequency Division Duplex, FDD) systems, LTE time division duplex (Time Division Duplex, TDD), systems, 5G communication systems, future communication systems, or the like.

Exemplary, a communication system 100 to which embodiments of the present application apply 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, terminal). Network device 110 may provide communication coverage for a particular geographic area and may communicate with terminals located within the coverage area. Alternatively, the network device 110 may be an evolved base station (Evolutional Node B, eNB or eNodeB) in the LTE system, or a radio controller in a cloud radio access network (Cloud Radio Access Network, CRAN), or the network device may be a mobile switching center, a relay station, an access point, a vehicle 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, etc.

The communication system 100 further includes at least one terminal 120 located within the coverage area of the network device 110. "terminal" as used herein includes, but is not limited to, connection via wireline, such as via public-switched telephone network (Public Switched Telephone Networks, PSTN), digital subscriber line (Digital Subscriber Line, DSL), digital cable, direct cable connection; and/or another data connection/network; and/or via a wireless interface, e.g., for a cellular network, a wireless local area network (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 means of the other terminal arranged to receive/transmit communication signals; and/or internet of things (Internet of Things, ioT) devices. Terminals arranged to communicate over a wireless interface may be referred to as "wireless communication terminals", "wireless terminals" or "mobile terminals". Examples of mobile terminals include, but are not limited to, satellites or cellular telephones; a personal communications system (Personal Communications System, PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; a PDA that can include a radiotelephone, pager, internet/intranet access, web browser, organizer, calendar, and/or a global positioning system (Global Positioning System, GPS) receiver; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A terminal may refer to an access terminal, user Equipment (UE), subscriber unit, subscriber station, mobile station, remote terminal, mobile device, user terminal, wireless communication device, user agent, or User Equipment. An access terminal may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, 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.

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

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

Fig. 1 illustrates one network device and two terminals, alternatively, the communication system 100 may include multiple network devices and each network device may include other numbers of terminals within a coverage area, which is not limited in this embodiment.

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

It should be understood that a device having a communication function in a network/system in an embodiment of the present application 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 communication functions, where the network device 110 and the terminal 120 may be specific devices described above, and are not described herein again; the communication device may also include other devices in the communication system 100, such as a network controller, a mobility management entity, and other network entities, which are not limited in this embodiment of the present application.

It should be understood that the terms "system" and "network" are used interchangeably herein. The term "and/or" is herein merely an association relationship describing an associated object, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In order to facilitate 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 the pursuit of speed, delay, high speed mobility, energy efficiency and diversity and complexity of future life business, the third generation partnership project (3 ^rd Generation Partnership Project,3 GPP) international standards organization began developing 5G. The main application scenario of 5G is: enhanced mobile Ultra-wideband (enhanced Mobile Broadband, emmbb), low latency high reliability communication (URLLC), large-scale Machine-based communication (mctc).

On the one hand, embbs still target users to obtain multimedia content, services and data, and their demand is growing very rapidly. On the other hand, since an eMBB may be deployed in different scenarios, such as indoors, urban, rural, etc., its capabilities and requirements are also quite different, so that detailed analysis must be performed in connection with a specific deployment scenario, not in general. Typical applications of URLLC include: industrial automation, electric power automation, remote medical operation (surgery), traffic safety guarantee and the like. Typical characteristics of mctc include: high connection density, small data volume, delay insensitive traffic, low cost and long service life of the module, etc.

At early deployment of NRs, full NR coverage is difficult to acquire, so typical network coverage is wide area LTE coverage and island coverage mode of NRs. And a large amount of LTE is deployed below 6GHz, and the frequency spectrum below 6GHz which can be used for 5G is few. NR must study spectral applications above 6GHz while high-band coverage is limited and signal fading is fast. Meanwhile, in order to protect the mobile operators from early investment in LTE, a working mode of close cooperation (tight interworking) between LTE and NR is proposed.

To enable 5G network deployment and commercial applications as soon as possible, 3GPP first completed the first 5G release, E-UTRA and NR dual connectivity (E-UTRA-NR Dual Connectivity, EN-DC), before 2017, 12. In EN-DC, an LTE base station (eNB) serves as a Master Node (MN), and an NR base station (gNB or EN-gNB) serves as a Secondary Node (SN). Wherein the MN is mainly responsible for RRC control functions and control plane towards the core network; the SN may configure secondary signaling, such as SRB3, primarily to provide data transfer functionality.

In the later stages of R15, other dual connectivity (Dual Connectivity, DC) modes will be supported, namely NR and E-UTRA dual connectivity (NR-E-UTRA Dual Connectivity, NE-DC), 5GC-EN-DC, NR DC. For EN-DC, the core network of the access network connection is an evolved packet core network (Evolved Packet Core network, EPC), while the core network of the other DC mode connection is a 5G core network (5G Core Network,5GC).

In Multi-RAT dual connectivity (Multi-RAT Dual Connectivity, MR-DC), referring to fig. 2, bearer types are classified 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). Where, "MN terminated" means that a packet data convergence protocol (Packet Data Convergence Protocol, PDCP) resource corresponding to a bearer, i.e., PDCP entity, is located on the MN side, and "SN terminated" means that a PDCP resource used by the bearer is located on the SN side. "MCG bearer" means that RLC/MAC/PHY resources used by the bearer are located on the MN side, "SCG bearer" means that RLC/MAC/PHY resources used by the bearer are located on the SN side, and "split bearer" means that RLC/MAC/PHY resources used by the bearer are located on the MN and SN sides.

In order to support power saving of terminal devices and to quickly establish SCG, the concept of supporting dormant (dormant) SCG is agreed on standards, which means that all cells in SCG are in a dormant state, that cells in the dormant state do not listen to physical downlink control channels (Physical Downlink Control Channel, PDCCH), do not perform transmission and reception of data, but perform radio resource management (Radio Resource Management, RRM), channel state indication (Channel Status Indicator, CSI) measurement, beam management, and so on.

In addition, the SCG may be in a deactivated state or an activated state, and the SCG is deactivated and then enters the deactivated state, and the SCG is activated and then enters the activated state. The resources occupied by the SCG side are different for SCG in the activated state compared to SCG in the deactivated state. Supporting activation of SCG is a well-defined problem that needs to be addressed how to ensure that SCG works properly and efficiently after it has been activated.

For this reason, the following technical solutions of the embodiments of the present application are proposed. Note that, in the embodiment of the present application, the description of the "MCG side" may also be referred to as "MN side", and the description of the "SCG side" may also be referred to as "SN side".

Fig. 3 is a flow chart of an information indication method provided in an embodiment of the present application, as shown in fig. 3, where the information indication method includes the following steps:

step 301: the network equipment sends an SCG activation command to the terminal equipment, and the terminal equipment receives the SCG activation command, wherein the SCG activation command is used for activating SCG; the SCG activation command carries indication information, where the indication information is used to indicate whether the terminal device SCG performs a specified action after being activated.

The technical scheme of the embodiment of the application is applied to a DC architecture, wherein a main node in DC is MN, an auxiliary node in DC is SN, namely, the MN and the SN are two nodes of DC. The cell group on the MN side is called MCG, and the cell group on the SN side is called SCG. The embodiment of the application does not limit the type of DC, and for example, MR-DC, EN-DC, NE-DC, NR-DC, etc. can be used.

In the embodiment of the 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 alternative manner of the present application, the SCG activation command is carried in a radio resource Control (Radio Resource Control, RRC) signaling or media access Control (Media Access Control, MAC) 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, where the indication information is used to indicate whether to execute a specified action after the terminal device 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 is described below.

Key update after SCG activation

The SCG activation command carries first indication information, and the first indication information is used for indicating whether the terminal equipment needs to update the secret key of 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 key of the SCG side after the SCG is activated, the terminal device determines a new key of the SCG side, and uses the new key of the SCG side to perform security processing on the SN terminated bearer.

The "new SCG-side key" is a key on the SCG side that is used by the terminal device and the SCG last time, as compared with the "original SCG-side key". The "new SCG-side key" may also be referred to as "updated SCG-side key".

In the above scheme, the key of the new SCG side may be determined by:

mode one: the first indication information is used for indicating a new SCG counter; the terminal equipment determines a new key of the SCG side based on the new SCG counter and the key of the MCG side.

Mode two: the first indication information is 1-bit indication information, the value of the 1-bit indication information is a first value and is used for indicating that the terminal equipment needs to update the key of the SCG side after the SCG is activated, and the value of the 1-bit indication information is a second value and is used for indicating that the terminal equipment does not need to update the key of the SCG side after the SCG is activated; and under the condition that the value of the 1-bit indication information is a first value, the terminal equipment determines a new SCG counter based on the stored SCG counter, and determines a new key at the SCG side based on the new SCG counter and the key at the MCG side.

In the above solution, optionally, the value of the new SCG counter is equal to the value of the SCG counter stored in 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 SCG needs to update the key at the SCG side after being activated, the terminal equipment uses the currently stored SCG counter to determine a new SCG counter by default, and calculates the key at the SCG side by using the new SCG counter.

The "new SCG counter" is a new SCG counter with respect to the "original SCG counter", which is the last time the terminal device and MN used. The original SCG counter is stored in the terminal device side and the MN side, and maintained in the MN side.

B) In an optional manner, if the first indication information indicates that the terminal device does not need to update the key on the SCG side after the SCG is activated, the terminal device uses the key on the original SCG side to perform security processing on the SN-terminated bearer.

C) In an optional manner, under the condition that the SCG activation command does not carry the first indication information, the terminal device defaults to use the original secret key of the SCG side to perform security processing on the SN-terminated bearer; or the terminal equipment carries out security processing on the SN-terminated bearer by default by using a new key of the SCG side, wherein the key of the new SCG side is determined based on a new SCG counter and the key of the MCG side, and the new SCG counter is determined based on the SCG counter stored by the terminal equipment.

D) In an alternative manner, the first indication information is further used to indicate a new security algorithm; and the terminal equipment determines a key of the SCG side, determines a new key of the SCG side based on the key of the SCG side and the new security algorithm, and uses the new key of the SCG side to carry out security processing on the SN-terminated bearer.

Here, the first indication information is further used to indicate a new security algorithm, specifically: the first indication information is also used for indicating the identification of a new security algorithm.

The "new security algorithm" is a security algorithm that is used by the terminal device and the MN last time, as compared with the "original security algorithm". The identity of the original security algorithm and/or the security algorithm configuration is stored at the terminal device side and the MN side.

In the embodiment of the application, the security algorithm comprises an encryption algorithm and/or an integrity protection algorithm. After the terminal device acquires the new security algorithm, regenerating the new key of the SCG side according to the new security algorithm, specifically, generating the new key of the SCG side according to the new security algorithm and the previously determined key of the SCG side.

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

It should be noted that, the SN-terminated bearer in the above scheme includes at least one of the following: an SN-terminated SCG bearer, an SN-terminated split bearer, an SN-terminated MCG bearer.

It should be noted that, the security process in the above scheme includes at least one of the following: encryption processing and integrity protection processing; alternatively, the security process includes at least one of: decryption processing and integrity protection verification processing. For example: for the uplink, the terminal device encrypts and/or integrity protects the SN terminated bearer using the new SCG side key or the original SCG side key. For the downlink, the terminal device uses the new key on the SCG side or the key on the original SCG side to decrypt and/or verify the integrity protection of the SN terminated bearer.

The above D) scheme may be implemented in combination with the above A) scheme or the above C) scheme, or the above A) scheme or the above B) scheme or the above C) scheme or the above D) scheme may be implemented separately.

In this embodiment of the present invention, optionally, if the terminal device needs to update the key on the SCG side after the SCG is activated, before sending the SCG activation command to the terminal device, the MN sends the key on the new SCG side to the SCG, and indicates to the SCG that the SCG enters the activation state. Here, the MN may determine the new SCG-side key scheme with reference to the aforementioned terminal device.

(II) random Access procedure after SCG activation

The SCG activation command carries second indication information, and the second indication information is used for indicating whether the terminal equipment needs to initiate a random access process to the SCG after the SCG is activated.

I) In an optional manner, the second indication information includes 1-bit indication information, where a value of the 1-bit indication information is a first value and is used to indicate that the terminal device needs to initiate a random access procedure to the SCG after the SCG is activated, and a value of the 1-bit indication information is a second value and 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 alternative manner, if 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; under the condition that the second indication information does not comprise the first configuration information, the second indication information indicates that the terminal equipment does not need to initiate a random access process to the SCG after the SCG is activated; wherein the first configuration information is used for determining a carrier wave initiating a random access procedure and/or a dedicated RACH resource.

In one example, the second indication information includes first configuration information for indicating whether a carrier (carrier) employed to initiate the random access procedure is a normal uplink (normal UL) carrier or a Supplementary Uplink (SUL) carrier.

In one example, the second indication information includes first configuration information for indicating a dedicated RACH resource, such as a dedicated preamble, a dedicated random access occasion (RO), employed to initiate a random access procedure.

The above-described scheme I) may be implemented in combination with the above-described scheme II), or the above-described scheme I) and the above-described scheme II) may be implemented separately.

In an alternative manner, if the second indication information does not contain the first configuration information, the terminal device is implicitly instructed not to initiate a random access procedure to the SCG.

In this embodiment of the present application, optionally, before sending 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 an acknowledgement message to the MN, and configures the first configuration information, for example, the dedicated RACH resource, in the acknowledgement message.

In one example, the configuration of the first configuration information may refer to the following tables 1 and 2. Wherein, the first configuration information is configured in table 1 to indicate whether a carrier (carrier) used to initiate the random access procedure is a normal uplink (normal UL) carrier or a Supplementary Uplink (SUL) carrier. The first configuration information is configured in table 2 to indicate the dedicated RACH resources employed to initiate the random access procedure.

TABLE 1

TABLE 2

(III) SRS trigger and TA acquisition after SCG activation

The SCG activation command carries third indication information, and the third indication information is used for triggering a 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 identification of aperiodic SRS;

transmitting time domain position information of an aperiodic SRS;

the time length between a first time and a second time, wherein the first time is the time when the terminal equipment receives an SCG activation command or DCI corresponding to the SCG activation command, and the second time is the time when the aperiodic SRS is sent;

the length of time for which the aperiodic SRS is transmitted.

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

In the above scheme, optionally, the time domain location information of the aperiodic SRS is transmitted, including at least one of the following: SFN number (SFN number), subframe number (subframe number), slot number (slot number).

In the above solution, optionally, the time length between the first time and the second time may be a plurality of time slots, for example, N time slots, where N is a positive integer.

And the terminal equipment transmits the aperiodic SRS according to the content indicated by the third indication information.

In an alternative manner, the third indication information is further used to indicate an initial Timing Advance (TA) value of transmitting the aperiodic SRS. And the terminal equipment determines timing information for transmitting the aperiodic SRS according to the initial TA value and transmits 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 a first TA value; the method further comprises the steps of:

the network device sends second configuration information to the terminal device, and the terminal device receives the second configuration information, wherein the second configuration information is used for determining the first TA value; and the terminal equipment determines an actual TA based on the first TA value, wherein the actual TA is used for uplink synchronization of the terminal equipment.

Specifically, after the terminal device sends the aperiodic SRS, the network device measures the aperiodic SRS, calculates a 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 an absolute TA value used by the terminal device to calculate the actual TA value.

In another alternative 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 an initial TA value for the terminal device, the first TA value calculated by the network device is a relative TA value used by the terminal device to calculate an actual TA value (i.e., a TA value corresponding to the initial TA value), and the terminal device adds the first TA value and the initial TA value to calculate the actual TA. The initial TA value and the first TA value have the same unit, but are different from the actual TA.

(IV) bearer change after SCG activation

The SCG activation command carries third configuration information, wherein the third configuration information is used for determining configuration information of a bearer, and the configuration information of the bearer is used for determining a changed bearer type and/or bearer configuration after the SCG is activated.

It should be noted that, the bearers in the above scheme include at least one of the following: MN terminated bearer, SN terminated bearer. After the SCG is activated, the MN-terminated bearer and/or the SN-terminated bearer may have a bearer type change and/or a bearer configuration change. 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 sending the SCG activation command to the terminal device, the MN sends a bearer change request to the SN to complete the bearer change on the network side.

It should be noted that, the above indication information related scheme may be implemented separately or may be implemented in combination.

Fig. 4 is a schematic structural diagram of an information indicating apparatus provided in an embodiment of the present application, which is applied to a terminal device, as shown in fig. 4, where the information indicating apparatus includes:

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

In an optional manner, the SCG activation command carries first indication information, where the first indication information is used to indicate whether the terminal device needs to update the 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 key on the SCG side after the SCG is activated, the apparatus further includes:

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

In an alternative manner, the first indication information is used for indicating a new SCG counter;

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

In an optional manner, the first indication information is 1-bit indication information, the value of the 1-bit indication information is a first value and is used for indicating that the terminal equipment needs to update the key of the SCG side after the SCG is activated, and the value of the 1-bit indication information is a second value and is used for indicating that the terminal equipment does not need to update the key of the SCG side after the SCG is activated;

and under the condition that the value of the 1-bit indication information is a first value, the processing unit is used for determining a new SCG counter based on the stored SCG counter and determining a new key at the SCG side based on the new SCG counter and the key at the MCG side.

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

a processing unit 402, configured to use the key on the SCG side to perform security processing on the SN-terminated bearer.

In an optional manner, 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 key on the SCG side after the SCG is activated, and the apparatus further includes:

A processing unit 402, configured to perform security processing on the SN-terminated bearer by using the original SCG-side key by default; or, by default, performing security processing on the SN-terminated bearer by using a new SCG-side key, where the new SCG-side key is determined based on a new SCG counter and an MCG-side key, and the new SCG counter is determined based on the SCG counter stored in the terminal device.

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

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

and a processing unit 402, configured to determine a key of the SCG side, determine a new key of the SCG side based on the key of the SCG side and the new security algorithm, and perform security processing on the SN-terminated bearer using the new key of the SCG side.

In an alternative, the security process includes at least one of: encryption processing and integrity protection processing; or,

the security process includes at least one of: decryption processing and 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, where a value of the 1-bit indication information is a first value and is used to indicate that the terminal device needs to initiate a random access procedure to the SCG after the SCG is activated, and a value of the 1-bit indication information is a second value and 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 an optional manner, if 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;

under the condition that the second indication information does not comprise the first configuration information, the second indication information indicates that the terminal equipment does not need to initiate a random access process to the SCG after the SCG is activated;

wherein the first configuration information is used for determining a carrier wave initiating a random access procedure and/or a dedicated RACH resource.

In an optional manner, the SCG activation command carries third indication information, where 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 identification of aperiodic SRS;

transmitting time domain position information of an aperiodic SRS;

the time length between a first time and a second time, wherein the first time is the time when the terminal equipment receives an SCG activation command or downlink control information DCI corresponding to the SCG activation command, and the second time is the time when the aperiodic SRS is sent;

the length of time for which the aperiodic SRS is transmitted.

In an alternative manner, the third indication information is further used to indicate an initial TA value of the aperiodic SRS to be transmitted.

In an alternative manner, the aperiodic SRS is used by the SCG to determine a 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 comprises: a processing unit 402, configured to determine an actual TA based on the first TA value, where the actual TA is used for uplink synchronization of the terminal device.

In an alternative manner, the processing unit 402 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; and if the third indication information does not indicate an initial TA value, determining an actual TA based on the first TA value and the initial TA value.

In an alternative manner, the SCG activation command carries third configuration information, where the third configuration information is used to determine configuration information of a bearer, and the configuration information of the bearer is used to determine a bearer type and/or a bearer configuration that is changed after the SCG is activated.

In an alternative 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 above description of the information indicating apparatus of the embodiments of the present application may be understood with reference to the description of the information indicating method of the embodiments of the present application.

Fig. 5 is a schematic diagram ii of the structural composition of the information indicating apparatus provided in the embodiment of the present application, which is applied to a network device, as shown in fig. 5, where the information indicating apparatus 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 SCG;

In an alternative manner, the first indication information is used for indicating a new SCG counter; the new SCG counter is used for the terminal device to determine a new SCG-side key.

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

In an alternative 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 SCG-side key.

resource set identification of aperiodic SRS;

transmitting time domain position information of an aperiodic SRS;

the length of time for which the aperiodic SRS is transmitted.

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 for the terminal equipment to determine an actual TA, and 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 in an embodiment of the present application. The communication device may be a terminal device or a network device, and the communication device 600 shown in fig. 6 includes a processor 610, where the processor 610 may call and execute 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 also include a memory 620. Wherein the processor 610 may call and run a computer program from the memory 620 to implement the methods in embodiments of the present application.

The memory 620 may be a separate device from the processor 610 or may be integrated into 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, and in particular, may send information or data to other devices, or receive information or data sent by other devices.

The transceiver 630 may include a transmitter and a receiver, among others. Transceiver 630 may further include antennas, the number of which may be one or more.

Optionally, the communication device 600 may be specifically a network device in the embodiment of the present application, and the communication device 600 may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the communication device 600 may be specifically a mobile terminal/terminal device in the embodiment of the present application, and the communication device 600 may implement corresponding processes implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which are not described herein for brevity.

Fig. 7 is a schematic structural diagram of a chip of an embodiment of the present application. The chip 700 shown in fig. 7 includes a processor 710, and the processor 710 may 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. 7, chip 700 may also include memory 720. Wherein the processor 710 may call and run a computer program from the memory 720 to implement the methods in embodiments of the present application.

Wherein the memory 720 may be a separate device from the processor 710 or may be integrated into the processor 710.

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

Optionally, the chip 700 may further include an output interface 740. The processor 710 may control the output interface 740 to communicate with other devices or chips, and in particular, may output information or data to other devices or chips.

Optionally, the chip may be applied to a network device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the network device in each method in the embodiment of the present application, which is not described herein for brevity.

Optionally, the chip may be applied to a mobile terminal/terminal device in the embodiment of the present application, and the chip may implement a corresponding flow implemented by the mobile terminal/terminal device in each method in the embodiment of the present application, which is not described herein for brevity.

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

Fig. 8 is a schematic block diagram of a communication system 800 provided in 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 may be used to implement the corresponding functions implemented by the terminal device in the above method, and the network device 820 may be used to implement the corresponding functions implemented by the network device in the above method, which are not described herein for brevity.

It should be appreciated that the processor of an embodiment of the present application may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method embodiments may be implemented by integrated logic circuits of hardware in a processor or instructions in software form. The processor may 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 programmable logic device, discrete gate or transistor logic device, discrete hardware components. The disclosed methods, steps, and logic blocks in the embodiments of the present application may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of a method disclosed in connection with the embodiments of the present application may be embodied directly in hardware, in a decoded processor, or in a combination of hardware and software modules in a decoded processor. The software modules may be located in a random access memory, flash memory, read only memory, programmable read only memory, or electrically erasable programmable memory, registers, etc. as well known in the art. The storage medium is located in a memory, and the processor reads the information in the memory and, in combination with its hardware, performs the steps of the above method.

It will be appreciated that the memory in embodiments of the present application may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM) which acts as an external cache. By way of example, and not limitation, many forms of RAM are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (Double Data Rate SDRAM), enhanced SDRAM (ESDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DR RAM). It should be noted that the memory of the systems and methods described herein is intended to comprise, without being limited to, these and any other suitable types of memory.

It should be understood that the above memory is exemplary but not limiting, and for example, the memory in the embodiments of the present application may be Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double data rate SDRAM (DDR SDRAM), enhanced SDRAM (ESDRAM), synchronous Link DRAM (SLDRAM), direct RAM (DR RAM), and the like. That is, the memory in embodiments of the present application is intended to comprise, without being limited to, these and any other suitable types of memory.

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

Optionally, the computer readable storage medium may be applied to a network device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer readable storage medium may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program causes a computer to execute a corresponding procedure implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, which is not described herein for brevity.

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

Optionally, the computer program product may be applied to a network device in the embodiments of the present application, and the computer program instructions cause the computer to execute corresponding flows implemented by the network device in the methods in the embodiments of the present application, which are not described herein for brevity.

Optionally, the computer program product may be applied to a mobile terminal/terminal device in the embodiments of the present application, and the computer program instructions cause a computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, which are not described herein for brevity.

The embodiment of the application also provides a computer program.

Optionally, the computer program may be applied to a network device in the embodiments of the present application, and when the computer program runs on a computer, the computer is caused to execute a corresponding flow implemented by the network device in each method in the embodiments of the present application, which is not described herein for brevity.

Optionally, the computer program may be applied to a mobile terminal/terminal device in the embodiments of the present application, where the computer program when run on a computer causes the computer to execute corresponding processes implemented by the mobile terminal/terminal device in the methods in the embodiments of the present application, and for brevity, will not be described herein.

Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the solution. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present application.

It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.

In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the apparatus embodiments described above are merely illustrative, e.g., the division of the units is merely a logical function division, and there may be additional divisions when actually implemented, e.g., multiple units or components may be combined or integrated into another system, or some features may be omitted or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

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

The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer-readable storage medium. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a usb disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (Random Access Memory, RAM), a magnetic disk, or an optical disk, or other various media capable of storing program codes.

The foregoing is merely specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily think about changes or substitutions within the technical scope of the present application, and the changes and substitutions are intended to be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.

Claims

An information indication method, the method comprising:

the terminal equipment receives an SCG activation command of the secondary cell group, wherein the SCG activation command is used for activating SCG;

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

and the terminal equipment determines a new key of the SCG side, and uses the new key of the SCG side to carry out security processing on the bearer terminated by the auxiliary node SN.
A method according to claim 3, wherein the first indication information is used to indicate a new SCG count value counter;

the terminal device determines a new key of the SCG side, including:

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

under the condition that the value of the 1-bit indication information is a first value, the terminal equipment determines a new key at the SCG side, and the method comprises the following steps:

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

And the terminal equipment uses the original key of the SCG side to carry out security processing on the SN-terminated bearer.
The method of claim 1, wherein in a case where 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 a key on the SCG side after the SCG is activated, the method further includes:

the terminal equipment defaults to use the original secret key of the SCG side to carry out security treatment on the SN-terminated bearer; or,

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

and the terminal equipment determines a key of the SCG side, determines a new key of the SCG side based on the key of the SCG side and the new security algorithm, and uses the new key of the SCG side to carry out security processing on the SN-terminated bearer.
The method according to any one of claims 3 to 9, wherein,

the security process includes at least one of: encryption processing and integrity protection processing; or,

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

under the condition that the second indication information comprises the first configuration information, the second indication information indicates that the terminal equipment needs to initiate a random access process to the SCG after the SCG is activated;

Under the condition that the second indication information does not comprise the first configuration information, the second indication information indicates that the terminal equipment does not need to initiate a random access process to the SCG after the SCG is activated;

wherein the first configuration information is used for determining a carrier wave initiating a random access procedure and/or a dedicated RACH resource.
The method according to any one of claims 1 to 13, wherein the SCG activation command carries third indication information for triggering a terminal device to send an aperiodic sounding reference signal, SRS, to an SCG after the SCG is activated.
The method of claim 14, wherein the third indication information is used to indicate at least one of:

resource set identification of aperiodic SRS;

transmitting time domain position information of an aperiodic SRS;

the time length between a first time and a second time, wherein the first time is the time when the terminal equipment receives an SCG activation command or downlink control information DCI corresponding to the SCG activation command, and the second time is the time when the aperiodic SRS is sent;

the length of time for which the aperiodic SRS is transmitted.
The method of claim 15, wherein the third indication information is further used to indicate an initial timing advance, TA, value for transmitting an 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 the steps of:

the terminal equipment receives second configuration information, wherein the second configuration information is used for determining the first TA value;

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

if the third indication information does not indicate the initial TA value, the terminal equipment determines the actual TA based on the first TA value;

and if the third indication information does not indicate an initial TA value, the terminal equipment determines an actual TA based on the first TA value and the initial TA value.
The method according to any of claims 1 to 18, wherein the SCG activation command carries third configuration information for determining configuration information of bearers for determining a bearer type and/or bearer configuration changed after activation of the SCG.
The method according to any 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 equipment sends an SCG activation command to the terminal equipment, wherein the SCG activation command is used for activating SCG;

the SCG activation command carries indication information, where the indication information is used to indicate whether the terminal device SCG performs a specified action after being activated.
The method of claim 21, wherein the SCG activation command carries first indication information, where the first indication information is used to indicate whether the terminal device needs to update a key on the SCG side after the SCG is activated.
The method of 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 a new SCG-side key.
The method of claim 22, wherein the first indication information is 1-bit indication information, a value of the 1-bit indication information is a first value and is used for indicating that the terminal device needs to update the key on the SCG side after the SCG is activated, and a value of the 1-bit indication information is a second value and is used for indicating that the terminal device does not need to update the key on the SCG side after the SCG is activated.
The method of any 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 a new SCG-side key.
The method according to any of claims 21 to 25, wherein the SCG activation command carries second indication information for indicating whether the terminal device needs to initiate a random access procedure to the SCG after the SCG is activated.
The method of claim 26, wherein the second indication information comprises 1-bit indication information, the 1-bit indication information having a first value for indicating that the terminal device needs to initiate a random access procedure to the SCG after the SCG is activated, and the 1-bit indication information having a second value for indicating that the terminal device does not need to initiate a random access procedure to the SCG after the SCG is activated.
The method of claim 26 or 27, wherein,

under the condition that the second indication information comprises the first configuration information, the second indication information indicates that the terminal equipment needs to initiate a random access process to the SCG after the SCG is activated;

under the condition that the second indication information does not comprise the first configuration information, the second indication information indicates that the terminal equipment does not need to initiate a random access process to the SCG after the SCG is activated;

wherein the first configuration information is used for determining a carrier wave initiating a random access procedure and/or a dedicated RACH resource.
The method according to any of claims 21 to 28, wherein the SCG activation command carries third indication information for triggering a terminal device to send an aperiodic SRS to an SCG after the SCG is activated.
The method of claim 29, wherein the third indication information is used to indicate at least one of:

resource set identification of aperiodic SRS;

transmitting time domain position information of an aperiodic SRS;

the time length between a first time and a second time, wherein the first time is the time when the terminal equipment receives an SCG activation command or DCI corresponding to the SCG activation command, and the second time is the time when the aperiodic SRS is sent;

the length of time for which the aperiodic SRS is transmitted.
The method of claim 30, wherein the third indication information is further used to indicate an initial TA value for transmitting an 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 comprises the steps of:

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

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

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

And the processing unit is used for determining a new key of the SCG side and carrying out security processing on the SN-terminated bearer by using the new key of the SCG side.
The apparatus of claim 37, wherein the first indication information is used to indicate a new SCG counter;

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

and under the condition that the value of the 1-bit indication information is a first value, the processing unit is used for determining a new SCG counter based on the stored SCG counter and determining a new key at the SCG side based on the new SCG counter and the key at the MCG side.
The apparatus of claim 36, wherein if the first indication information indicates that the terminal device does not need to update a key on the SCG side after the SCG is activated, the apparatus further comprises:

And the processing unit is used for carrying out security processing on the SN-terminated bearer by using the original key at the SCG side.
The apparatus of claim 35, wherein in a case where 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 a key on the SCG side after the SCG is activated, the apparatus further includes:

the processing unit is used for carrying out security processing on the SN-terminated bearer by default by using the original secret key of the SCG side; or, by default, performing security processing on the SN-terminated bearer by using a new SCG-side key, where the new SCG-side key is determined based on a new SCG counter and an MCG-side key, and the new SCG counter is determined based on the SCG counter stored in the terminal device.
The apparatus of claim 39 or 41, wherein the new SCG counter has a value equal to the value of SCG counter stored by the terminal device plus 1.
The apparatus of any one of claims 36 to 40, wherein the first indication information is further for indicating a new security algorithm; the apparatus further comprises:

and the processing unit is used for determining the secret key of the SCG side, determining the secret key of the new SCG side based on the secret key of the SCG side and the new security algorithm, and performing security processing on the SN-terminated bearer by using the secret key of the new SCG side.
The apparatus of any one of claims 37 to 43, wherein,

the security process includes at least one of: encryption processing and integrity protection processing; or,

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

under the condition that the second indication information comprises the first configuration information, the second indication information indicates that the terminal equipment needs to initiate a random access process to the SCG after the SCG is activated;

Under the condition that the second indication information does not comprise the first configuration information, the second indication information indicates that the terminal equipment does not need to initiate a random access process to the SCG after the SCG is activated;

wherein the first configuration information is used for determining a carrier wave initiating a random access procedure and/or a dedicated RACH resource.
The apparatus of any one of claims 35 to 47, wherein the SCG activation command carries third indication information for triggering a terminal device to send an aperiodic SRS to an SCG after the SCG is activated.
The apparatus of claim 48, wherein the third indication information is used to indicate at least one of:

resource set identification of aperiodic SRS;

transmitting time domain position information of an aperiodic SRS;

the time length between a first time and a second time, wherein the first time is the time when the terminal equipment receives an SCG activation command or downlink control information DCI corresponding to the SCG activation command, and the second time is the time when the aperiodic SRS is sent;

the length of time for which the aperiodic SRS is transmitted.
The apparatus of claim 49, wherein the third indication information is further for indicating an initial TA value for transmitting an 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 comprises: and the processing unit is used for determining an actual TA based on the first TA value, wherein the actual TA is used for carrying out uplink synchronization on the terminal equipment.
The apparatus of 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; and if the third indication information does not indicate an initial TA value, determining an actual TA based on the first TA value and the initial TA value.
The apparatus of any of claims 35 to 52, wherein the SCG activation command carries third configuration information for determining configuration information of bearers for determining a bearer type and/or bearer configuration changed after activation of the SCG.
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 apparatus for use in a network device, the apparatus comprising:

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

the SCG activation command carries indication information, where the indication information is used to indicate whether the terminal device SCG performs a specified action after being activated.
The apparatus of claim 55, wherein the SCG activation command carries first indication information, where the first indication information is used to indicate whether a terminal device needs to update a key on an SCG side after the SCG is activated.
The apparatus of claim 56, 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 a new SCG-side key.
The apparatus of claim 56, wherein the first indication information is 1-bit indication information, the 1-bit indication information has a value of a first value for indicating that the terminal device needs to update the key on the SCG side after the SCG is activated, and the 1-bit indication information has a value of a second value for indicating that the terminal device does not need to update the key on the SCG side after the SCG is activated.
The apparatus of any one of claims 56 to 58, wherein the first indication information is further for indicating a new security algorithm; the new security algorithm is used for the terminal device to determine a new SCG-side key.
The apparatus of any one of claims 55 to 59, wherein the SCG activation command carries second indication information for indicating whether the terminal device needs to initiate a random access procedure to the SCG after the SCG is activated.
The apparatus of claim 60, wherein the second indication information comprises 1-bit indication information, the 1-bit indication information having a first value for indicating that the terminal device needs to initiate a random access procedure to the SCG after the SCG is activated, and the 1-bit indication information having a second value for indicating that the terminal device does not need to initiate a random access procedure to the SCG after the SCG is activated.
The apparatus of claim 60 or 61, wherein,

under the condition that the second indication information comprises the first configuration information, the second indication information indicates that the terminal equipment needs to initiate a random access process to the SCG after the SCG is activated;

under the condition that the second indication information does not comprise the first configuration information, the second indication information indicates that the terminal equipment does not need to initiate a random access process to the SCG after the SCG is activated;

Wherein the first configuration information is used for determining a carrier wave initiating a random access procedure and/or a dedicated RACH resource.
The apparatus of any one of claims 55 to 62, wherein the SCG activation command carries third indication information for triggering a terminal device to send an aperiodic SRS to an SCG after the SCG is activated.
The apparatus of claim 63, wherein the third indication information is used to indicate at least one of:

resource set identification of aperiodic SRS;

transmitting time domain position information of an aperiodic SRS;

the time length between a first time and a second time, wherein the first time is the time when the terminal equipment receives an SCG activation command or DCI corresponding to the SCG activation command, and the second time is the time when the aperiodic SRS is sent;

the length of time for which the aperiodic SRS is transmitted.
The apparatus of claim 64, wherein the third indication information is further for indicating an initial TA value for transmitting an 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 for the terminal equipment to determine an actual TA, and the actual TA is used for the terminal equipment to perform uplink synchronization.
The apparatus of any of claims 55 to 66, wherein the SCG activation command carries third configuration information for determining configuration information of bearers for determining a bearer type and/or bearer configuration changed after activation of the SCG.
The apparatus of any of claims 55-67, wherein the SCG activation command is carried in RRC signaling or MAC CE or DCI.
A terminal device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 1 to 20.
A network device, comprising: a processor and a memory for storing a computer program, the processor being for invoking and running the computer program stored in the memory, performing the method of any of claims 21 to 34.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any one of claims 1 to 20.
A chip, comprising: a processor for calling and running a computer program from a memory, causing a device on which the chip is mounted to perform the method of any of claims 21 to 34.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 1 to 20.
A computer readable storage medium storing a computer program for causing a computer to perform the method of any one of claims 21 to 34.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 1 to 20.
A computer program product comprising computer program instructions for causing a computer to perform the method of any one of claims 21 to 34.
A computer program which causes a computer to perform the method of any one of claims 1 to 20.
A computer program which causes a computer to perform the method of any of claims 21 to 34.