CN110996395B

CN110996395B - Transmission configuration information indication method and device for auxiliary link, storage medium and terminal

Info

Publication number: CN110996395B
Application number: CN201911288900.XA
Authority: CN
Inventors: 张萌
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2019-12-12
Filing date: 2019-12-12
Publication date: 2022-10-25
Anticipated expiration: 2039-12-12
Also published as: CN110996395A

Abstract

A transmission configuration information indication method and device for a secondary link, a storage medium and a terminal are provided, the method comprises the following steps: acquiring transmission configuration information; and determining transmission configuration parameters during data transmission on the auxiliary link according to the transmission configuration information. The invention provides an effective transmission configuration information indication mechanism for an auxiliary link, which can optimize the beam management logic of the auxiliary link and improve the communication quality of the auxiliary link.

Description

Transmission configuration information indication method and device for auxiliary link, storage medium and terminal

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for indicating transmission configuration information for a secondary link, a storage medium, and a terminal.

Background

The flow of beam management (beam management) and beam indication (beam indication) on the Uu link (uulink) is extensively studied in protocol version 15 (Release 15, abbreviated as R15) and Release 16.

On the other hand, in order to meet special requirements for communication in the car networking and other similar or related application scenarios, research on a vehicle wireless communication technology (vehicle to X, abbreviated as V2X) secondary link (sidelink) is introduced in Release 16. However, there is no discussion about the secondary link beam, and when the beam concept is introduced for secondary link communication, the prior art cannot provide appropriate processing logic, so that the existing terminal does not know how to operate and affects the communication quality of the secondary link.

Disclosure of Invention

The technical problem solved by the invention is how to provide an effective transmission configuration information indication mechanism for a secondary link.

To solve the foregoing technical problem, an embodiment of the present invention provides a method for indicating transmission configuration information of a secondary link, including: acquiring transmission configuration information; and determining the transmission configuration parameters when the transmission is carried out on the auxiliary link according to the transmission configuration information.

Optionally, before or after determining the transmission configuration parameter when transmitting on the secondary link according to the transmission configuration information, the method for indicating the transmission configuration information further includes: and sending receiving configuration information to an opposite end of the auxiliary link, wherein the receiving configuration information is obtained from the transmission configuration information or determined according to the transmission configuration information.

Optionally, the opposite end of the secondary link is a receiving terminal.

Optionally, the obtaining the transmission configuration information includes: receiving the transmission configuration information; or, determining the transmission configuration information.

Optionally, the transmission configuration information includes reception configuration information and/or transmission configuration information, where the reception configuration information includes a spatial reception parameter, an antenna port and/or an antenna panel index number, and the transmission configuration information includes a spatial transmission parameter, an antenna port serial number and/or an antenna panel index number.

Optionally, the transmission configuration information is used to indicate transmission configuration parameters when transmitting on multiple channels or reference signals of an associated secondary link BWP, component carrier or serving cell, and the transmission configuration information includes reception configuration information and/or transmission configuration information, where the transmission configuration information is selected from a set of candidate transmission configuration information, the secondary link BWP, component carrier or serving cell is associated with at least one candidate transmission configuration information in the set of candidate transmission configuration information, the reception configuration information is selected from a set of candidate reception configuration information, and the secondary link BWP, component carrier or serving cell is associated with at least one candidate reception configuration information in the set of candidate reception configuration information.

Optionally, the transmission configuration information is used to indicate a transmission configuration parameter when transmission is performed on an associated channel, where the transmission configuration information includes reception configuration information and/or transmission configuration information, where the transmission configuration information is selected from a candidate transmission configuration information set, candidate transmission configuration information included in the candidate transmission configuration information set corresponds to the channel one to one, the reception configuration information is selected from a candidate reception configuration information set, and candidate reception configuration information included in the candidate reception configuration information set corresponds to the channel one to one.

Optionally, the transmission configuration information includes a reuse indication information for indicating reuse of transmission configuration information associated with other channels, where the other channels are selected from PSCCH and pscsch.

Optionally, the transmission configuration information is used to indicate a transmission configuration parameter when a reference signal is transmitted, where the transmission configuration information includes reception configuration information and/or transmission configuration information, where the transmission configuration information is selected from a candidate transmission configuration information set, candidate transmission configuration information included in the candidate transmission configuration information set corresponds to the reference signal one to one, the reception configuration information is selected from a candidate reception configuration information set, and candidate reception configuration information included in the candidate reception configuration information set corresponds to the reference signal one to one.

Optionally, the transmission configuration information includes continuation indication information, which is used to indicate continuation of the transmission configuration information associated with the channel carrying the reference signal.

Optionally, the reference signal is at least selected from: a secondary link CSI-RS, a secondary link TRS and a secondary link SSB.

Optionally, the candidate sending configuration information set and/or the candidate receiving configuration information set are configured through a higher layer signaling.

Optionally, the transmission configuration information is configured through Uu MAC-CE, PC5-MAC-CE, DCI, SCI, uu RRC signaling, or PC5-RRC signaling.

Optionally, the sending configuration information is selected from activated candidate sending configuration information in the candidate sending configuration information, where the activated candidate sending configuration information in the candidate sending configuration information is configured through Uu MAC-CE, PC5-MAC-CE, or RRC signaling; and/or the receiving configuration information is selected from the activated candidate receiving configuration information in the candidate receiving configuration information, wherein the activated candidate receiving configuration information in the candidate receiving configuration information is configured through Uu MAC-CE, PC5-MAC-CE or RRC signaling.

In order to solve the foregoing technical problem, an embodiment of the present invention further provides an apparatus for indicating transmission configuration information of a secondary link, including: the acquisition module is used for acquiring the transmission configuration information; and the determining module is used for determining the transmission configuration parameters during transmission on the auxiliary link according to the transmission configuration information.

To solve the above technical problem, an embodiment of the present invention further provides a storage medium having stored thereon computer instructions, where the computer instructions execute the steps of the above method when executed.

In order to solve the above technical problem, an embodiment of the present invention further provides a terminal, including a memory and a processor, where the memory stores computer instructions capable of being executed on the processor, and the processor executes the computer instructions to perform the steps of the method.

Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:

the embodiment of the invention provides a method for indicating transmission configuration information of a secondary link, which comprises the following steps: acquiring transmission configuration information; and determining the transmission configuration parameters when the transmission is carried out on the auxiliary link according to the transmission configuration information.

The scheme of the embodiment can provide an effective transmission configuration information indication mechanism for the auxiliary link, optimize the beam management logic of the auxiliary link and improve the communication quality of the auxiliary link. Compared with the prior art that only relevant regulations are formulated for beam indication and management in the Uu link, the scheme of the embodiment can realize an effective beam indication mechanism in the secondary link, so that both terminals of the secondary link can obtain sending/receiving configuration information in a mode suitable for the characteristics of the secondary link, and further communicate in the indicated beam direction.

Further, the transmission configuration information is used to indicate transmission configuration parameters when transmitting on multiple channels or reference signals of an associated secondary link BWP, component carrier or serving cell, and the transmission configuration information includes reception configuration information and/or transmission configuration information, where the transmission configuration information is selected from a set of candidate transmission configuration information, the secondary link BWP, component carrier or serving cell is associated with at least one candidate transmission configuration information in a set of candidate transmission configuration information, the reception configuration information is selected from a set of candidate reception configuration information, and the secondary link BWP, component carrier or serving cell is associated with at least one candidate reception configuration information in a set of candidate reception configuration information. Thus, a simplified indication manner can be provided, in which the transmission configuration information and/or the reception configuration information is configured in units of the secondary link BWP, the component carrier, or the serving cell.

Further, the transmission configuration information is used to indicate a transmission configuration parameter when transmission is performed on an associated channel, and the transmission configuration information includes reception configuration information and/or transmission configuration information, where the transmission configuration information is selected from a candidate transmission configuration information set, the candidate transmission configuration information included in the candidate transmission configuration information set corresponds to the channel one to one, the reception configuration information is selected from a candidate reception configuration information set, and the candidate reception configuration information included in the candidate reception configuration information set corresponds to the channel one to one. Thereby, the transmission configuration information and/or the reception configuration information can be configured according to the channel, respectively, so that the beam used in the communication on the secondary link can be accurate to a specific channel.

Further, the transmission configuration information is used to indicate a transmission configuration parameter when a reference signal is transmitted, and the transmission configuration information includes reception configuration information and/or transmission configuration information, where the transmission configuration information is selected from a candidate transmission configuration information set, the candidate transmission configuration information included in the candidate transmission configuration information set corresponds to the reference signal one to one, the reception configuration information is selected from a candidate reception configuration information set, and the candidate reception configuration information included in the candidate reception configuration information set corresponds to the reference signal one to one. Therefore, appropriate sending configuration information and/or receiving configuration information can be configured according to different reference signals, and both terminals of the secondary link can be ensured to effectively receive the reference signals.

Drawings

Fig. 1 is a flowchart of a method for indicating transmission configuration information of a secondary link according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a transmission configuration information indication apparatus for a secondary link according to an embodiment of the present invention.

Detailed Description

As noted in the background, the prior art does not have a transmission configuration information indication mechanism applicable to the secondary link.

The scheme of the embodiment can provide an effective transmission configuration information indication mechanism for the auxiliary link, optimize the beam management logic of the auxiliary link, and improve the communication quality of the auxiliary link. Compared with the prior art that only relevant regulations are formulated for beam indication and management in the Uu link, the scheme of the embodiment can realize an effective beam indication mechanism in the auxiliary link, so that both terminals of the auxiliary link can obtain sending/receiving configuration information in a mode suitable for the characteristics of the auxiliary link, and further communicate in the indicated beam direction. The Uu link may refer to a communication link or an air interface protocol between the base station and the terminal.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.

Fig. 1 is a flowchart of a method for indicating transmission configuration information of a secondary link according to an embodiment of the present invention.

The scheme of the embodiment can be applied to V2X scenes.

The scheme of this embodiment may be applied to a User Equipment side, for example, executed by a User Equipment (UE).

And the auxiliary link is a communication link between the sending terminal and the receiving terminal. The sending terminal is a Transmit Sidelink sending UE (Tx-UE for short), and may be one of two terminals communicating via an auxiliary link to send data transmission; the receiving terminal is a secondary link receiving UE (Rx-UE), and may be a party receiving data transmission.

This embodiment scheme may be performed by the Tx-UE.

Specifically, referring to fig. 1, the method for indicating transmission configuration information for a secondary link according to this embodiment may include the following steps:

step S101, acquiring transmission configuration information;

step S102, determining the transmission configuration parameters when the transmission is carried out on the auxiliary link according to the transmission configuration information.

More specifically, the transmission configuration parameter may include: spatial domain parameter or spatial domain filter, antenna port (antenna port), and/or antenna panel index. The terminal may select spatial transmission parameters, antenna ports, and/or antenna panels based on these configuration parameters. The spatial domain parameter may be a spatial Tx parameter (spatial Tx parameter) or a spatial Rx parameter (spatial Rx parameter).

Further, the transmitting Configuration information may include receiving Configuration information, such as a Transmission Configuration Indication state (TCI-state). The transmission configuration information may be used to indicate a receiving manner, such as a receiving configuration parameter when receiving on a secondary link. Specifically, the terminal may receive a corresponding transmission according to a Reference Signal (RS) in the TCI-state and a corresponding Quasi-Co-location type (QCL type). For example, the quasi-co-site type may include Doppler shift (Doppler shift), doppler spread (Doppler spread), average delay (average delay), delay spread (delay spread), and/or spatial Rx parameter (spatial Rx parameter).

Further, the transmission configuration information may further include transmission configuration information, such as spatial relationship information (spatialrelalationinfo). The sending configuration information may be used to indicate a sending manner, such as a transmission configuration parameter when sending on the secondary link. For example, the spatialrelalationinfo may include a spatial Tx parameter. For another example, the SpatialRelationInfo may also contain antenna port indication information for indicating antenna port selection when transmitting on the secondary link. For another example, spatialRelationInfo may also contain antenna panel indication information to indicate antenna panel selection when transmitting on the secondary link. In the present invention, spatialrelalationinfo may also be referred to as secondary link spatialrelalationinfo (SL spatialrelalationinfo for short).

In one implementation, the sending configuration information may include 1 or 2 Reference Signals (RS). The reference signal included in the transmission configuration information may be selected from, but is not limited to: a secondary link Synchronization Signal Block (S-SSB), a secondary link Channel State Information Reference Signal (SL CSI-RS), a secondary link Tracking Reference Signal (SL TRS), a secondary link Discovery Reference Signal (SL DRS), a CSI-RS of the Uu link (Uu SRS-RS), a Sounding Reference Signal (Sounding Reference Signal, SL) of the Uu link (Uu TRS), a TRS of the Uu link (Uu TRS), and an SSB of the Uu link (Uu SSB).

When the transmission configuration information includes 2 reference signals, the second reference signal may be associated with the spatial reception parameter, and the first reference signal may adopt a definition that 4 Quasi Co-Location types (QCL types for short) or 4 subsets thereof in the Uu link may be used, for example, only QCL type a and QCL type D, only QCL type a, or both QCL type a/B/C/D may be supported.

Specifically, the set 'QCL-Type a' may include parameters: { Doppler shift, doppler spread, average delay, delay spread }, the set 'QCL-Type B' may include parameters: { doppler shift, doppler spread }, the set 'QCL-Type C' may include parameters: { doppler shift, average delay }, the set 'QCL-type' may include parameters: { spatial reception parameter }.

In one implementation, the reference signal included in the received configuration information, such as the secondary link spatial relationship information, may be selected from, but is not limited to: S-SSB, SL CSI-RS, SL TRS, SL DRS, uu CSI-RS, uu SRS, uu TRS, and Uu SSB.

The information that may be contained in the SL SpatialRelationInfo is at least one of: spatial Tx parameter (spatial Tx parameter), antenna port indication information, and antenna panel number indication information.

Specifically, the terminal may send a corresponding transmission according to the reference signal in the SL spatialrelalationinfo and the corresponding spatial sending parameter.

And/or the terminal may send the corresponding transmission according to the antenna port indication information in the SL spatialrelalationinfo. The antenna port indication information may refer to or use the same antenna port or a subset of antenna ports of the reference signal configured in the sls signaling relationship info.

And/or the terminal may send the corresponding transmission according to the antenna panel sequence number indication information in the SL SpatialRelationInfo. The antenna panel serial number indication information may refer to or use an antenna panel serial number used by a reference signal configured in the sls signaling relationship info.

For example, the secondary link spatial relationship information may include a reference signal selected from the aforementioned set.

In the NR V2X scenario, the communication methods that can be used include: mode 1 (Mode-1) and Mode 2 (Mode-2), wherein in Mode 1, the base station may provide some secondary link scheduling information for the transmitting terminal (Tx-UE) or may autonomously decide the secondary link scheduling information by the transmitting terminal (Tx-UE); in mode 2, the transmitting terminal (Tx-UE) decides the secondary link scheduling information autonomously or according to a pre-configured message.

In one implementation, in mode 1, the step S101 may include: and receiving transmission configuration information sent by the base station, wherein the transmission configuration information comprises the sending configuration information and/or the receiving configuration information. In response to receiving the transmission configuration information, before/while/after performing the step S102, the sending terminal may further perform the steps of: transmitting the reception configuration information to the receiving terminal (Rx-UE).

In a variation, the transmission configuration information may only include the transmission configuration information based on beam reciprocity (beam reciprocity), and in response to receiving the transmission configuration information, the transmitting terminal may inform the receiving terminal of the transmission configuration information or spatial transmission parameters therein, and the receiving terminal may determine corresponding reception configuration information based on the beam reciprocity.

In one implementation, in mode 1 or mode 2, the step S101 may include: the sending terminal autonomously determines the transmission configuration information, which may include the sending configuration information and/or the receiving configuration information. Further, the sending terminal may further perform the step of: transmitting the reception configuration information to the reception terminal (Rx-UE).

In a variation, based on the beam reciprocity (beam reciprocity), the transmitting terminal may determine only the transmission configuration information and inform the receiving terminal of the determined transmission configuration information or spatial transmission parameters therein, and the receiving terminal may determine corresponding reception configuration information based on the beam reciprocity.

In a specific implementation, in step S102, the sending terminal may determine a transmission configuration parameter for transmission of the secondary link according to the received indication information in the TCI-state and/or the spatialrelalationinfo. Alternatively, the above operation may be applied to the scenario of mode 1.

In one implementation, the sending terminal may determine the TCI-state and/or spatialrelalationinfo of the secondary link, and then inform the receiving terminal Rx-UE of the TCI-state. Meanwhile, the sending terminal may determine the transmission configuration parameters of the secondary link transmission according to the indication information in the TCI-state and/or the spatialrelalationinfo. Alternatively, the above operation may be applied to the scenario of mode 2.

Next, how to determine the transmission configuration information or the reception configuration information of each channel or reference signal in the above two embodiments is described in detail.

In one implementation, the transmission configuration information may be configured directly in units of a secondary link partial Bandwidth (BWP), a Component Carrier (CC), or a serving cell (serving cell) without distinguishing a channel or a reference signal.

In particular, the transmission configuration information may be used to indicate transmission configuration parameters when transmitting on multiple channels of an associated secondary link BWP, component carrier, or serving cell. Wherein the plurality of channels may include, but are not limited to: a Physical Sidelink Control Channel (PSCCH for short); a Physical downlink Shared Channel (psch); a Physical Sidelink Feedback Channel (PSFCH for short); a secondary link Discovery Channel (PSDCH).

Further, the transmission configuration information may be selected from a set of candidate transmission configuration information, and the secondary link BWP, the component carrier, or the serving cell is associated with at least one candidate transmission configuration information of the set of candidate transmission configuration information.

The reception configuration information may be selected from a set of candidate reception configuration information, at least one candidate reception configuration information of the set of secondary link BWP, component carrier, or serving cell candidate reception configuration information being associated.

For example, for each of a plurality of secondary link BWPs, the secondary link BWPs may directly associate a candidate receive configuration information (e.g., candidate TCI-state). And, the candidate TCI-state may be applied to transmission and reception of all PSCCH, PSFCH, PSDCH, SL CSI-RS, SL SSB, SL TRS, or PSSCH on the secondary link BWP. Similarly, for each of a plurality of component carriers, the component carrier may be directly associated with one candidate reception configuration information. Similarly, for each of a plurality of serving cells, the serving cell may be directly associated with one candidate reception configuration information.

For each of a plurality of secondary link BWPs, the secondary link BWP may also be directly associated with a candidate transmit configuration information (e.g., candidate spatialrelalationinfo). And, the candidate SpatialRelationInfo may be applied to transmission and reception of all PSCCH, PSFCH, PSDCH, SL CSI-RS, SL SSB, SL TRS, or PSSCH on the secondary link BWP. Similarly, for each of a plurality of component carriers, the component carrier may be directly associated with one candidate transmission configuration information. Similarly, for each of a plurality of serving cells, the serving cell may directly associate a candidate transmission configuration information.

As another example, for each of a plurality of secondary link BWPs, the secondary link BWP may associate a plurality of candidate TCI-states and/or a plurality of candidate spatialRelationinfo. And, the receiving terminal or the transmitting terminal may select any one of them to perform the transmission and reception of the secondary link. Similarly, for each of a plurality of component carriers, the component carrier may be associated with a plurality of candidate TCI-states and/or a plurality of candidate spatialrelalationinfo. Similarly, for each of a plurality of serving cells, the serving cell may associate a plurality of candidate TCI-states and/or a plurality of candidate spatialrelalationinfo. Therefore, in a scene which is easily blocked or interfered, such as a high frequency scene, a narrow beam scene, etc., by providing a plurality of candidate transmitting configuration information and/or a plurality of candidate receiving configuration information for each secondary link BWP, component carrier or serving cell, it can be ensured that the transmitting terminal and the receiving terminal select a more suitable beam for transmission.

In mode 1, the transmission configuration information in step S101 is directly obtained by one signaling sent by the base station, or the transmission configuration information may be obtained step by step based on multiple signaling.

For example, the base station may configure the candidate transmission configuration information set through Uu RRC. Then, the base station activates part of the candidate transmission configuration information in the candidate transmission configuration information set through a medium Access Control-Control Element (Uu MAC-CE) of the Uu link. Finally, the base station may indicate one of the activated part of candidate transmission configuration Information through Downlink Control Information (DCI). In response to receiving the DCI, the transmitting terminal may acquire transmission configuration information.

Or, the base station may deactivate part of the candidate transmission configuration information in the candidate transmission configuration information set through the Uu MAC-CE. Then in the DCI, the base station may indicate one of those candidate sets of transmission configuration information that are not deactivated of the candidate sets of transmission configuration information. In response to receiving the DCI, the transmitting terminal may acquire transmission configuration information.

Or, the base station may deactivate a part of candidate transmission configuration information in the candidate transmission configuration information set and activate another part of candidate transmission configuration information in the candidate transmission configuration information set through the Uu MAC-CE. The base station may indicate, in the DCI, one of those candidate transmission configuration information sets that are activated among the candidate transmission configuration information sets. In response to receiving the DCI, the transmitting terminal may acquire transmission configuration information. Wherein the sum of the part of candidate transmission configuration information and the other part of candidate transmission configuration information may be a total number of the candidate transmission configuration information sets.

Similarly, the base station may further configure the candidate reception configuration information set through Uu RRC. Then, the base station activates part of candidate receiving configuration information in the candidate receiving configuration information set through Uu MAC-CE. Finally, the base station may indicate one of the activated partial candidate reception configuration information through DCI, and the transmitting terminal may acquire the reception configuration information in response to receiving the DCI.

Or, the base station may deactivate part of the candidate reception configuration information in the candidate reception configuration information set through the Uu MAC-CE. Then in the DCI, the base station may indicate one of those candidate reception configuration information sets that are not deactivated of the candidate reception configuration information sets, and the transmitting terminal may receive configuration information in response to receiving the DCI.

Or, the base station may deactivate a part of candidate reception configuration information in the candidate reception configuration information set through the Uu MAC-CE, and activate another part of candidate reception configuration information in the candidate reception configuration information set. The base station may indicate, in the DCI, which one of those candidate reception configuration information sets is activated among the candidate reception configuration information sets, and the transmitting terminal may receive the configuration information in response to receiving the DCI. Wherein the sum of the part of candidate reception configuration information and the other part of candidate reception configuration information may be a total number of the candidate reception configuration information sets.

For another example, the base station may configure the candidate transmission configuration information set through Uu RRC. Then, the base station may activate one of the candidate transmission configuration information sets through DCI. In response to receiving the DCI, the transmitting terminal may acquire the transmission configuration information.

Similarly, the base station may configure the candidate reception configuration information set through Uu RRC. Then, the base station may activate one of the candidate reception configuration information sets through DCI. In response to receiving the DCI, the transmitting terminal may acquire the reception configuration information.

For another example, the base station may configure the candidate transmission configuration information set through Uu RRC. Then, the base station may activate one of the candidate transmission configuration information sets through the Uu MAC-CE. In response to receiving the Uu MAC-CE, the transmitting terminal may acquire transmission configuration information.

Similarly, the base station may configure the candidate reception configuration information set through Uu RRC. Then, the base station may activate one of the candidate reception configuration information sets through the Uu MAC-CE. In response to receiving the Uu MAC-CE, the transmitting terminal may acquire reception configuration information.

For another example, the base station may directly configure the transmission configuration information to the transmitting terminal through Uu RRC.

Similarly, the base station may also directly configure the reception configuration information to the transmitting terminal through Uu RRC.

For another example, the base station may directly configure the transmission configuration information to the transmitting terminal through the Uu MAC-CE.

Similarly, the base station may also directly configure the reception configuration information to the transmitting terminal through the Uu MAC-CE.

For another example, the base station may directly configure the transmission configuration information to the transmitting terminal through Uu DCI.

Similarly, the base station may also directly configure the reception configuration information to the transmitting terminal through Uu DCI.

For another example, the base station may also directly configure the reception configuration information to the receiving terminal through Uu RRC.

For another example, the base station may also directly configure the reception configuration information to the receiving terminal through the Uu MAC-CE.

For another example, the base station may directly configure the reception configuration information to the receiving terminal through Uu DCI.

The transmission configuration information may be directly configured to the receiving terminal by the sending terminal through one signaling, or the transmission configuration information may be configured to the receiving terminal step by step based on a plurality of signaling. Alternatively, the above steps may be applied in either mode 2 or mode 1. Wherein mode 1 may be used when the transmitting terminal forwards the transmission configuration information of the psch association determined by the base station to the receiving terminal.

For example, the transmitting terminal may directly configure the transmission configuration information or the reception configuration information to the receiving terminal through PC 5-RRC.

For another example, the sending terminal may directly configure the sending configuration information or the receiving configuration information to the receiving terminal through a secondary link Control Indicator (SCI).

For another example, the transmitting terminal may configure the set of candidate transmission configuration information through PC 5-RRC. Then, the transmitting terminal activates part of the candidate transmission configuration information in the candidate transmission configuration information set through the PC 5-MAC-CE. Finally, the transmitting terminal may indicate one of the activated part of the candidate transmission configuration information through the SCI. In response to receiving the SCI, the receiving terminal may obtain transmission configuration information.

Alternatively, the transmitting terminal may deactivate part of the candidate transmission configuration information in the candidate transmission configuration information set through the PC 5-MAC-CE. The transmitting terminal may indicate, in the SCI, one of those candidate transmission configuration information sets that are not deactivated. In response to receiving the SCI, the receiving terminal may obtain transmission configuration information.

Or, the transmitting terminal may deactivate a part of the candidate transmission configuration information in the candidate transmission configuration information set and activate another part of the candidate transmission configuration information in the candidate transmission configuration information set through the PC 5-MAC-CE. The transmitting terminal may indicate, in the SCI, one of those candidate transmission configuration information sets that are not deactivated. In response to receiving the SCI, the receiving terminal may obtain transmission configuration information. Wherein the sum of the part of the candidate transmission configuration information and the other part of the candidate transmission configuration information may be the total number of the candidate transmission configuration information sets.

Similarly, the transmitting terminal may configure the candidate reception configuration information set through PC 5-RRC. Then, the transmitting terminal activates part of the candidate reception configuration information in the candidate reception configuration information set through the PC 5-MAC-CE. Finally, the transmitting terminal may indicate one of the activated part of the candidate reception configuration information through the SCI. In response to receiving the SCI, the receiving terminal may obtain reception configuration information.

Alternatively, the transmitting terminal may deactivate part of the candidate reception configuration information in the candidate reception configuration information set through the PC 5-MAC-CE. The transmitting terminal may indicate, in the SCI, one of those candidate reception configuration information sets that are not deactivated. In response to receiving the SCI, the receiving terminal may obtain reception configuration information.

Or, the transmitting terminal may deactivate a part of the candidate reception configuration information in the candidate reception configuration information set and activate another part of the candidate reception configuration information in the candidate reception configuration information set through the PC 5-MAC-CE. The transmitting terminal may indicate, in the SCI, one of those candidate reception configuration information sets that are not deactivated. In response to receiving the SCI, the receiving terminal may obtain reception configuration information. Wherein the sum of the part of candidate reception configuration information and the other part of candidate reception configuration information may be a total number of the candidate reception configuration information sets.

For another example, the transmitting terminal may configure the set of candidate transmission configuration information through PC 5-RRC. Then, the transmitting terminal may activate one of the candidate transmission configuration information sets through the PC 5-MAC-CE.

Similarly, the transmitting terminal may configure the candidate reception configuration information set through PC 5-RRC. Then, the transmitting terminal may activate one of the candidate reception configuration information sets through the PC 5-MAC-CE.

For another example, the transmitting terminal may configure the set of candidate transmission configuration information through PC 5-RRC. The transmitting terminal may then activate one of the candidate set of transmit configuration information through the SCI.

Similarly, the transmitting terminal may configure the candidate reception configuration information set through PC 5-RRC. The transmitting terminal may then activate one of the candidate reception configuration information sets through the SCI.

For another example, the transmitting terminal may configure the candidate transmission configuration information set through the PC 5-MAC-CE. The transmitting terminal may then activate one of the candidate set of transmit configuration information through the SCI.

Similarly, the transmitting terminal may configure the candidate reception configuration information set through the PC 5-MAC-CE. The transmitting terminal may then activate one of the candidate reception configuration information sets through the SCI.

For another example, the transmitting terminal may directly configure the transmission configuration information to the receiving terminal through PC 5-RRC.

Similarly, the transmitting terminal may also directly configure the reception configuration information to the receiving terminal through PC 5-RRC.

For another example, the transmitting terminal may directly configure the transmission configuration information to the receiving terminal through the PC 5-MAC-CE.

Similarly, the transmitting terminal may also directly configure the reception configuration information to the receiving terminal through the PC 5-MAC-CE.

For another example, the transmitting terminal may directly configure the transmission configuration information to the receiving terminal through the SCI.

Similarly, the sending terminal may also directly configure the receiving configuration information to the receiving terminal through the SCI.

For the PSFCH, the PSFCH may follow (follow) the transmission configuration information configured by the base station or the transmitting terminal in the foregoing example. Alternatively, the above operation may be applied to the premise that beam reciprocity (beam reciprocity) exists.

Alternatively, a base station may separately configure transmission configuration information for a PSFCH, which may be dedicated to indicate spatial transmit parameters, antenna port sequence number, and/or antenna panel sequence number of the PSFCH. Alternatively, the above operation may be applied to the premise that beam reciprocity (beam reciprocity) does not exist.

In one implementation, the transmission configuration information may be associated with a channel, i.e., different channels may correspond to different transmission configuration information.

In particular, the transmission configuration information may be used to indicate transmission configuration parameters when transmitting on an associated channel. The transmission configuration information may be selected from a candidate transmission configuration information set, the candidate transmission configuration information included in the candidate transmission configuration information set corresponds to the channel in a one-to-one manner, the reception configuration information may be selected from a candidate reception configuration information set, and the candidate reception configuration information included in the candidate reception configuration information set corresponds to the channel in a one-to-one manner.

Taking the PSCCH as an example, the transmitting terminal may determine a transmission configuration parameter of the PSCCH (or a Demodulation Reference Signal (DMRS) of the PSCCH) according to indication information (e.g., transmission configuration information received from the base station) of the base station.

The transmission configuration information in step S101 is directly obtained by one signaling sent by the base station, or the transmission configuration information may be obtained step by step based on multiple signaling. Alternatively, the above steps may be applied to mode 1.

For example, the base station may configure the candidate transmission configuration information set through Uu RRC. Then, the base station activates part of the candidate transmission configuration information in the candidate transmission configuration information set through Uu MAC-CE. Finally, the base station may indicate one of the activated partial candidate transmission configuration information through the DCI. In response to receiving the DCI, the transmitting terminal may acquire transmission configuration information.

Or, the base station may deactivate a part of candidate transmission configuration information in the candidate transmission configuration information set and activate another part of candidate transmission configuration information in the candidate transmission configuration information set through the Uu MAC-CE. The base station may indicate one of the candidate transmission configuration information sets that is not deactivated in the DCI. In response to receiving the DCI, the transmitting terminal may acquire transmission configuration information. Wherein the sum of the part of the candidate transmission configuration information and the other part of the candidate transmission configuration information may be the total number of the candidate transmission configuration information sets.

Similarly, the base station may further configure the candidate reception configuration information set through Uu RRC. Then, the base station activates part of candidate receiving configuration information in the candidate receiving configuration information set through Uu MAC-CE. Finally, the base station may activate one of the activated partial candidate reception configuration information through the DCI. In response to receiving the DCI, the transmitting terminal may obtain reception configuration information.

Or, the base station may deactivate part of the candidate reception configuration information in the candidate reception configuration information set through the Uu MAC-CE. Then in the DCI, the base station may indicate one of those candidate reception configuration information sets that are not deactivated among the candidate reception configuration information sets, and in response to receiving the DCI, the transmitting terminal may acquire reception configuration information.

Or, the base station may deactivate a part of candidate reception configuration information in the candidate reception configuration information set through the Uu MAC-CE, and activate another part of candidate reception configuration information in the candidate reception configuration information set. Then in the DCI, the base station may indicate one of those candidate reception configuration information sets that are not deactivated among the candidate reception configuration information sets, and in response to receiving the DCI, the transmitting terminal may acquire reception configuration information. Wherein the sum of the part of candidate reception configuration information and the other part of candidate reception configuration information may be a total number of the candidate reception configuration information sets.

For another example, the base station may configure the candidate transmission configuration information set through Uu RRC. Then, the base station may indicate one of the candidate transmission configuration information sets through DCI. In response to receiving the DCI, the transmitting terminal may acquire transmission configuration information.

Similarly, the base station may configure the candidate reception configuration information set through Uu RRC. Then, the base station may activate one of the candidate reception configuration information sets through DCI. In response to receiving the DCI, the transmitting terminal may acquire reception configuration information.

The transmission configuration information may be directly configured to the receiving terminal by the sending terminal through one signaling, or the transmission configuration information may be configured to the receiving terminal step by step based on a plurality of signaling. Alternatively, the above steps may be applied in mode 2 or mode 1. Wherein, mode 1 can be applied when the transmitting terminal forwards the transmission configuration information of the PSSCH association determined by the base station to the receiving terminal.

Specifically, the receiving configuration information may be carried by a secondary link TCI-state. Or, the sending terminal may notify the receiving terminal of its spatial sending parameter, where the spatial sending parameter may be carried by a secondary link spatialrelalationinfo. Alternatively, the above operations may be applied to the spatial transmission parameter and the spatial reception parameter may be used interchangeably when there is beam reciprocity.

For another example, the transmitting terminal may directly configure the transmission configuration information or the reception configuration information to the receiving terminal through the PC 5-MAC-CE.

For another example, the transmitting terminal may directly configure the transmitting configuration information or the receiving configuration information to the receiving terminal through the SCI.

Alternatively, the transmitting terminal may deactivate part of the candidate transmission configuration information in the candidate transmission configuration information set through the PC 5-MAC-CE. The transmitting terminal may indicate, in the SCI, one of the candidate transmission configuration information sets that is not deactivated, and the receiving terminal may acquire transmission configuration information in response to receiving the SCI.

Or, the transmitting terminal may deactivate a part of the candidate transmission configuration information in the candidate transmission configuration information set and activate another part of the candidate transmission configuration information in the candidate transmission configuration information set through the PC 5-MAC-CE. Then in the SCI the sending terminal may indicate one of those candidate sending configuration information sets that are not deactivated, and in response to receiving the SCI the receiving terminal may obtain sending configuration information. Wherein the sum of the part of the candidate transmission configuration information and the other part of the candidate transmission configuration information may be the total number of the candidate transmission configuration information sets.

For another example, the transmitting terminal may configure the set of candidate transmission configuration information through PC 5-RRC. The transmitting terminal may then activate one of the set of candidate transmit configuration information via the SCI.

For another example, the transmitting terminal may configure the set of candidate transmission configuration information through PC 5-RRC. The transmitting terminal may then activate one of the candidate reception configuration information sets through the SCI.

For another example, the transmitting terminal may configure the set of candidate transmission configuration information through PC 5-RRC. Then, the transmitting terminal may activate one of the candidate reception configuration information sets through the PC 5-MAC-CE.

Taking the PSCCH as an example, the base station or the transmitting terminal may multiplex the above scheme of determining the transmission configuration information associated with the PSCCH.

Alternatively, the transmission configuration information may not indicate the transmission configuration information and the reception configuration information associated with the PSCCH, but may indicate the transmission configuration information and the reception configuration information associated with the PSCCH directly by using 1-bit continuation indication information. The size and format of the reuse indication information may also be predefined.

Taking SL CSI-RS as an example, the base station or the transmitting terminal may multiplex the scheme for determining the transmission configuration information associated with PSCCH.

Taking SL TRS as an example, the base station or the transmitting terminal may multiplex the scheme of determining the transmission configuration information associated with PSCCH.

Taking SL SSB as an example, the base station or the transmitting terminal may multiplex the scheme for determining the transmission configuration information associated with PSCCH.

Taking the psch as an example, the transmitting terminal may determine a transmission configuration parameter of the psch (or a Demodulation Reference Signal (DMRS) of the psch) according to indication information (e.g., transmission configuration information received from the base station) of the base station.

For example, the same transmission configuration parameters are used for the psch and the PSCCH, and the transmission terminal may determine the transmission configuration parameters of the psch and the PSCCH (or a Demodulation Reference Signal (DMRS) of the psch and the DMRS of the PSCCH) based on instruction information (e.g., transmission configuration information received from the base station) of the base station.

For another example, the psch and the reference signal transmitted in the same slot (slot) use the same transmission configuration parameters, and the transmitting terminal may determine the transmission configuration parameters of the psch and the reference signal transmitted in the same slot (or the DMRS of the psch and the reference signal transmitted in the same slot) according to indication information (e.g., transmission configuration information received from the base station) of the base station. Wherein the reference signal may be a SL CSI-RS, a SL TRS, and/or a SL SSB.

For another example, the psch, PSCCH, and reference signal transmitted in the same time slot t use the same transmission configuration parameters, and the transmitting terminal may determine the transmission configuration parameters of the psch, PSCCH, and reference signal transmitted in the same time slot (or DMRS of the psch, DMRS of the PSCCH, and reference signal transmitted in the same time slot) according to indication information (e.g., transmission configuration information received from the base station) of the base station. Wherein the reference signal may be a SL CSI-RS, a SL TRS, and/or a SL SSB.

Taking the PSFCH as an example, the base station or the transmitting terminal or the receiving terminal may multiplex the above scheme for determining the transmission configuration information associated with the PSCCH or PSCCH.

Alternatively, the transmission configuration information associated with the PSFCH may follow the transmission configuration information of its associated PSCCH and/or PSCCH. Alternatively, the scheme of this example may be used in scenarios where beam reciprocity exists. For example, the spatial transmission parameters of the PSFCH may refer to the spatial reception parameters of the reference signals of QCL type D of the TCI-state of the PSCCH and/or PSCCH. Alternatively, the transmit antenna port of the PSFCH may refer to the TCI-state indication of the PSCCH and/or PSCCH or the corresponding antenna port. Alternatively, the transmit antenna port of the PSFCH may refer to the TCI-state indication of the PSCCH and/or PSCCH or the corresponding antenna panel. As another example, the spatialRelationinfo of PSFCH may refer to the TCI-state of PSSCH and/or PSCCH.

In one implementation, the transmission configuration information may be associated with reference signals, i.e., different reference signals may correspond to different transmission configuration information.

Specifically, the transmission configuration information is used to indicate a transmission configuration parameter when the reference signal is transmitted. The transmission configuration information may be selected from a candidate transmission configuration information set, the candidate transmission configuration information included in the candidate transmission configuration information set corresponds to the reference signal in a one-to-one manner, the reception configuration information may be selected from a candidate reception configuration information set, and the candidate reception configuration information included in the candidate reception configuration information set corresponds to the reference signal in a one-to-one manner.

Further, the reference signal may be selected from, but not limited to: secondary link CSI-RS, secondary link TRS, secondary link SSB, secondary link Discovery Reference Signal (DRS), PSDCH, uu CSI-RS, uu SSB, uu SRS, and Uu TRS.

For example, the base station or the transmitting terminal may configure the transmission configuration information associated with the reference signal by multiplexing the above scheme of determining the transmission configuration information associated with the PSCCH.

For another example, for the secondary link CSI-RS, the transmission configuration information of the PSCCH or PSCCH transmitted therewith may be followed. Wherein, the transmission together with the channel means that the secondary link CSI-RS is carried by the channel.

For another example, for the secondary link TRS, the transmission configuration information of PSCCH or PSCCH transmitted therewith may be followed.

For another example, for the secondary link SSB, the transmission configuration information may be determined in a predefined manner. And determining which secondary link SSBs are quasi co-sited through a predefined mode or a mode of high-layer signaling configuration. The terminal adopts the same transmission configuration parameters when transmitting the SSBs with the quasi-co-site relationship. Optionally, the terminal may use different or the same transmission configuration parameters when the SSB does not have the quasi co-site relationship.

Therefore, by adopting the scheme of the embodiment, an effective transmission configuration information indication mechanism for the secondary link can be provided, the beam management logic of the secondary link is optimized, and the communication quality of the secondary link is improved. Specifically, an effective beam indication mechanism can be implemented in the secondary link, so that both terminals of the secondary link can obtain the transmission/reception configuration information in a manner suitable for the characteristics of the secondary link, and further perform transceiving in the indicated beam direction.

Fig. 2 is a schematic structural diagram of an apparatus for indicating transmission configuration information of a secondary link according to an embodiment of the present invention. Those skilled in the art understand that the transmission configuration information indication apparatus 2 for the secondary link (hereinafter, referred to as the transmission configuration information indication apparatus 2) described in this embodiment may be used to implement the technical solution of the method described in the embodiment shown in fig. 1.

Specifically, referring to fig. 2, the transmission configuration information indicating apparatus 2 may include: an obtaining module 21, configured to obtain transmission configuration information; a determining module 22, configured to determine, according to the transmission configuration information, a transmission configuration parameter when the transmission is performed on the secondary link.

For more contents of the operation principle and the operation mode of the transmission configuration information indication apparatus 2, reference may be made to the related description in fig. 1, and details are not repeated here.

Further, the embodiment of the present invention also discloses a storage medium, on which a computer instruction is stored, and when the computer instruction runs, the technical solution of the method described in the embodiment shown in fig. 1 is executed. Preferably, the storage medium may include a computer-readable storage medium such as a non-volatile (non-volatile) memory or a non-transitory (non-transient) memory. The storage medium may include ROM, RAM, magnetic or optical disks, etc.

Further, an embodiment of the present invention further discloses a terminal, which includes a memory and a processor, where the memory stores a computer instruction capable of being executed on the processor, and the processor executes the method technical solution described in the embodiment shown in fig. 1 when executing the computer instruction. Preferably, the terminal may be a transmitting terminal in the secondary link.

The technical scheme of the invention can be applied to 5G (5 Generation) communication systems, 4G and 3G communication systems, and various future new communication systems such as 6G and 7G.

The technical solution of the present invention is also applicable to different network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-electrical (communication from Vehicle to any object) architecture, and the like.

In this embodiment of the present application, the Core Network may be an evolved packet Core (EPC for short), a 5G Core Network (5G Core Network), or may be a novel Core Network in a future communication system. The 5G Core Network is composed of a set of devices, and implements Access and Mobility Management functions (AMF) of functions such as Mobility Management, user Plane Functions (UPF) providing functions such as packet routing and forwarding and QoS (Quality of Service) Management, session Management Functions (SMF) providing functions such as Session Management, IP address allocation and Management, and the like. The EPC may be composed of an MME providing functions such as mobility management, gateway selection, etc., a Serving Gateway (S-GW) providing functions such as packet forwarding, etc., and a PDN Gateway (P-GW) providing functions such as terminal address allocation, rate control, etc.

A Base Station (BS) in the embodiment of the present application, which may also be referred to as a base station device, is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, a device providing a base station function in a 2G network includes a Base Transceiver Station (BTS), a device providing a base station function in a 3G network includes a node B (NodeB), a device providing a base station function in a 4G network includes an Evolved node B (eNB), and in a Wireless Local Area Network (WLAN), the device providing a base station function is an Access Point (AP), a device providing a base station function in a 5G New Radio (NR) is a gNB, and a node B (ng-eNB) continues to evolve, where the gNB and the terminal communicate with each other by using an NR technique, the ng-eNB and the terminal communicate with each other by using an E-a (Evolved Universal Radio Access) technique, and both the gNB and the ng-eNB may be connected to the 5G core network. The base station in the embodiment of the present application also includes an apparatus and the like for providing a function of the base station in a future new communication system.

The base station controller in the embodiment of the present application is a device for managing a base station, for example, a Base Station Controller (BSC) in a 2G network, a Radio Network Controller (RNC) in a 3G network, or a device for controlling and managing a base station in a future new communication system.

The network on the network side in the embodiment of the present invention refers to a communication network providing a communication service for a terminal, and includes a base station of a radio access network, a base station controller of the radio access network, and a device on the core network side.

A terminal in this embodiment may refer to various forms of User Equipment (UE), an access terminal, a subscriber unit, a subscriber station, a mobile station (mobile station, MS), a remote station, a remote terminal, a mobile device, a user terminal, a terminal device (terminal equipment), a wireless communication device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with a Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which is not limited in this embodiment.

In the embodiment of the application, a unidirectional communication link from an access network to a terminal is defined as a downlink, data transmitted on the downlink is downlink data, and the transmission direction of the downlink data is called as a downlink direction; the unidirectional communication link from the terminal to the access network is an uplink, the data transmitted on the uplink is uplink data, and the transmission direction of the uplink data is referred to as an uplink direction.

It should be understood that the term "and/or" herein is only one kind of association relationship describing the association object, and means that there may be three kinds of relationships, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document indicates that the former and latter related objects are in an "or" relationship.

The "plurality" appearing in the embodiments of the present application means two or more.

The descriptions of the first, second, etc. appearing in the embodiments of the present application are only for the purpose of illustrating and differentiating the description objects, and do not represent any particular limitation to the number of devices in the embodiments of the present application, and cannot constitute any limitation to the embodiments of the present application.

The term "connect" in the embodiments of the present application refers to various connection manners, such as direct connection or indirect connection, to implement communication between devices, which is not limited in this embodiment of the present application.

It should be understood that, in the embodiment of the present application, the processor may be a Central Processing Unit (CPU), and the processor may also be other general-purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field Programmable Gate Arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.

It will also be appreciated that the memory in the embodiments of the subject 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 PROM (EEPROM), or a flash memory. Volatile memory may be Random Access Memory (RAM) which acts as external cache memory. By way of example and not limitation, many forms of Random Access Memory (RAM) are available, such as Static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (DDRSDRAM), enhanced SDRAM (enhanced SDRAM), synchronous DRAM (SLDRAM), synchronous Link DRAM (SLDRAM), and direct bus RAM (DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer instructions or the computer program are loaded or executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire or wirelessly. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, data center, etc., that contains one or more collections of available media. The usable medium may be a magnetic medium (e.g., floppy disk, hard disk, magnetic tape), an optical medium (e.g., DVD), or a semiconductor medium. The semiconductor medium may be a solid state disk.

It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.

In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus, and system may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative; for example, the division of the cell is only a logic function division, and there may be another division manner in actual implementation; for example, various elements or components may be combined or may be integrated in another system or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

The units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one position, or may be distributed on multiple network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may be physically included alone, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.

The integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium. The software functional unit is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute some steps of the methods described in the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other media capable of storing program codes.

Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.

Claims

1. A method for indicating transmission configuration information of a secondary link is characterized by comprising the following steps:

acquiring transmission configuration information, wherein the transmission configuration information is used for indicating transmission configuration parameters during transmission on an associated channel, and the transmission configuration information comprises receiving configuration information and/or sending configuration information, wherein the sending configuration information is selected from a candidate sending configuration information set, the candidate sending configuration information included in the candidate sending configuration information set corresponds to the channel one by one, the receiving configuration information is selected from a candidate receiving configuration information set, the candidate receiving configuration information included in the candidate receiving configuration information set corresponds to the channel one by one, the receiving configuration information comprises spatial receiving parameters, antenna ports and/or antenna panel index numbers, and the sending configuration information comprises spatial sending parameters, antenna port serial numbers and/or antenna panel index numbers;

determining transmission configuration parameters when the transmission is carried out on the auxiliary link according to the transmission configuration information; wherein the transmission configuration information is acquired step by step based on a plurality of signaling, and the acquiring the transmission configuration information includes:

receiving a candidate transmission configuration information set configured by a base station through Uu RRC;

receiving a Uu MAC-CE, wherein the Uu MAC-CE is used for activating partial candidate transmission configuration information in the candidate transmission configuration information set;

receiving DCI indicating one of partial candidate transmission configuration information which is activated;

determining candidate transmission configuration information indicated by the DCI as the transmission configuration information;

the PSSCH and the reference signal transmitted in the same time slot use the same transmission configuration parameters, or the PSSCH, the PSCCH and the reference signal transmitted in the same time slot use the same transmission configuration parameters;

the PSFCH follows the transmission configuration information of its associated PSCCH and/or PSCCH when beam reciprocity exists.

2. The method for indicating transmission configuration information according to claim 1, further comprising, before or after determining the transmission configuration parameters for data transmission on the secondary link according to the transmission configuration information:

and sending receiving configuration information to an opposite end of the auxiliary link, wherein the receiving configuration information is obtained from the transmission configuration information or determined according to the transmission configuration information.

3. The method according to claim 2, wherein the opposite end of the secondary link is a receiving terminal.

4. The method according to claim 1, wherein the obtaining the transmission configuration information comprises:

receiving the transmission configuration information; or

Determining the transmission configuration information.

5. The method according to claim 1, wherein the transmission configuration information is used to indicate transmission configuration parameters when transmitting on multiple channels or reference signals of associated secondary link BWPs, component carriers or serving cells, and the transmission configuration information comprises reception configuration information and/or transmission configuration information, wherein the transmission configuration information is selected from a set of candidate transmission configuration information, the secondary link BWPs, component carriers or serving cells are associated with at least one candidate transmission configuration information in a set of candidate transmission configuration information, the reception configuration information is selected from a set of candidate reception configuration information, and the secondary link BWPs, component carriers or serving cells are associated with at least one candidate reception configuration information in a set of candidate reception configuration information.

6. The method of claim 1, wherein the transmission configuration information comprises a reuse indication information for indicating reuse of transmission configuration information associated with other channels, wherein the other channels are selected from the group consisting of PSCCH and PSSCH.

7. The method according to claim 1, wherein the transmission configuration information is used to indicate transmission configuration parameters when a reference signal is transmitted, and the transmission configuration information includes reception configuration information and/or transmission configuration information, wherein the transmission configuration information is selected from a candidate transmission configuration information set, the candidate transmission configuration information set includes candidate transmission configuration information corresponding to the reference signal one to one, the reception configuration information is selected from a candidate reception configuration information set, and the candidate reception configuration information set includes candidate reception configuration information corresponding to the reference signal one to one.

8. The method according to claim 7, wherein the transmission configuration information includes continuation indication information for indicating continuation of transmission configuration information associated with a channel carrying the reference signal.

9. The transmission configuration information indicating method of claim 7, wherein the reference signal is at least selected from the group consisting of: a secondary link CSI-RS, a secondary link TRS, and a secondary link SSB.

10. The transmission configuration information indication method according to any of claims 5 to 9, wherein the candidate transmission configuration information set and/or the candidate reception configuration information set are configured by higher layer signaling.

11. The transmission configuration information indicating method of any one of claims 5 to 9, wherein the transmission configuration information is configured through Uu MAC-CE, PC5-MAC-CE, DCI, SCI, uu RRC signaling, or PC5-RRC signaling.

12. The transmission configuration information indicating method according to any one of claims 5 to 9, wherein the transmission configuration information is selected from activated candidate transmission configuration information in the candidate transmission configuration information, wherein the activated candidate transmission configuration information in the candidate transmission configuration information is configured through Uu MAC-CE, PC5-MAC-CE, or RRC signaling; and/or the receiving configuration information is selected from the activated candidate receiving configuration information in the candidate receiving configuration information, wherein the activated candidate receiving configuration information in the candidate receiving configuration information is configured through Uu MAC-CE, PC5-MAC-CE or RRC signaling.

13. An apparatus for indicating transmission configuration information of a secondary link, comprising:

an obtaining module, configured to obtain transmission configuration information, where the transmission configuration information is used to indicate a transmission configuration parameter when transmission is performed on an associated channel, and the transmission configuration information includes reception configuration information and/or transmission configuration information, where the transmission configuration information is selected from a candidate transmission configuration information set, candidate transmission configuration information included in the candidate transmission configuration information set corresponds to channels one to one, the reception configuration information is selected from a candidate reception configuration information set, the candidate reception configuration information included in the candidate reception configuration information set corresponds to channels one to one, the reception configuration information includes a spatial reception parameter, an antenna port and/or an antenna panel index number, and the transmission configuration information includes a spatial transmission parameter, an antenna port serial number and/or an antenna panel index number;

a determining module, configured to determine, according to the transmission configuration information, a transmission configuration parameter when the transmission is performed on the secondary link;

wherein the transmission configuration information is obtained step by step based on a plurality of signaling, and the obtaining module performs the following steps:

receiving a Uu MAC-CE, wherein the Uu MAC-CE is used for activating part of candidate transmission configuration information in the candidate transmission configuration information set;

the PSSCH and a reference signal transmitted in the same time slot use the same transmission configuration parameters, or the PSSCH, the PSCCH and a reference signal transmitted in the same time slot use the same transmission configuration parameters;

the PSFCH follows the transmission configuration information of its associated PSCCH and/or pscsch when beam reciprocity exists.

14. A storage medium having stored thereon computer instructions, which when executed by a processor, perform the steps of the method of any one of claims 1 to 12.

15. A terminal comprising a memory and a processor, the memory having stored thereon computer instructions executable on the processor, wherein the processor executes the computer instructions to perform the steps of the method of any one of claims 1 to 12.