CN111107635B

CN111107635B - Method and equipment for sending and receiving sidelink information

Info

Publication number: CN111107635B
Application number: CN201811293785.0A
Authority: CN
Inventors: 杨晓东
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2018-10-31
Filing date: 2018-10-31
Publication date: 2023-04-07
Anticipated expiration: 2038-10-31
Also published as: CN111107635A

Abstract

The invention provides a method and a device for sending and receiving sidelink information, wherein the sending method comprises the following steps: target information for determining feedback information for the sidelink SL is transmitted. Since the terminal device can send the target information for determining the feedback information for the sidelink SL, the present invention can make the network device accurately receive the feedback information for the sidelink, thereby improving the communication effectiveness.

Description

Method and equipment for sending and receiving sidelink information

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and a device for sending and receiving sidelink information.

Background

A Sidelink (SL), also called a Sidelink or a Sidelink, is used for directly performing data transmission between terminal equipments (UEs) without passing through a network device. SL data transmission modes include broadcast, multicast, and unicast. Both broadcast and multicast are one-to-many (one to one) transmission methods, but there is no concept that the UEs belong to the same UE group in the broadcast transmission method, and unicast is one-to-one (one to one) transmission method.

Currently, for two transmission modes, multicast and unicast, a receiving end may send feedback Information for explaining a receiving condition of an SL data object to a sending end, for example, the receiving end may feed back Channel State Information (CSI) or ACK or NACK for a Hybrid Automatic Repeat reQuest (HARQ) to the sending end. Specifically, the receiving end may send the feedback information to the sending end in two ways, one is that the receiving end first sends the feedback information to a network device (such as a base station), and then the network device sends the feedback information to the sending end; the other is that the sending end feeds back the feedback information from the receiving end to the network device after receiving the feedback information from the receiving end.

However, at present, the channel for carrying the feedback information is not clear, and if the shared channel is used to carry the feedback information, the shared channel may also be used to carry other information, so that it is difficult for the network device to determine whether the feedback information is received, which results in inaccurate reception of the feedback information.

Disclosure of Invention

The embodiment of the invention provides a method and equipment for sending and receiving sidelink information, so that network equipment can accurately receive feedback information aiming at a sidelink.

In a first aspect, a sidelink information sending method is provided, and is applied to a terminal device, where the method includes:

target information for determining feedback information for the sidelink SL is transmitted.

In a second aspect, a sidelink information receiving method is provided, and is applied to a network device, where the method includes:

target information for determining feedback information for the sidelink SL is received.

In a third aspect, a terminal device is provided, which includes:

a first sending module, configured to send target information, where the target information is used to determine feedback information for the sidelink SL.

In a fourth aspect, a network device is provided, the network device comprising:

a first receiving module, configured to receive target information, where the target information is used to determine feedback information for the sidelink SL.

In a fifth aspect, a terminal device is provided, the network device comprising a memory, a processor and a wireless communication program stored on the memory and operable on the processor, the wireless communication program, when executed by the processor, implementing the steps of the method according to the first aspect.

In a sixth aspect, a network device is provided, the terminal device comprising a memory, a processor and a wireless communication program stored on the memory and operable on the processor, the wireless communication program, when executed by the processor, implementing the steps of the method according to the second aspect.

In a seventh aspect, a computer readable medium is provided, having stored thereon a wireless communication program, which when executed by a processor, performs the steps of the method according to the first or second aspect.

In the embodiment of the present invention, since the terminal device may send the target information for determining the feedback information for the sidelink SL, the network device may accurately receive the feedback information for the sidelink, thereby improving the communication effectiveness.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, it is obvious that the drawings in the following description are only some embodiments described in the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic diagram of a receiving terminal sending feedback information for a sidelink to a sending terminal according to an embodiment of the present invention.

Fig. 2 is a second schematic diagram of a receiving terminal sending feedback information for a sidelink to a sending terminal according to an embodiment of the present invention.

Fig. 3 is a schematic flowchart of a sidelink information sending method according to an embodiment of the present invention.

Fig. 4 is a schematic diagram of an interaction process in which a terminal device sends target information to a network device according to an embodiment of the present invention.

Fig. 5 is one of the format diagrams of the SL BSR according to the embodiment of the present invention.

Fig. 6 is a second schematic diagram of a SL BSR according to the second embodiment of the present invention.

Fig. 7 is a schematic flowchart of a sidelink information receiving method according to an embodiment of the present invention.

Fig. 8 is a schematic structural diagram of a terminal device 800 according to an embodiment of the present invention.

Fig. 9 is a schematic structural diagram of a network device 900 according to an embodiment of the present invention.

Fig. 10 is a schematic structural diagram of a terminal device 1000 according to an embodiment of the present invention.

Fig. 11 is a schematic structural diagram of a network device 1100 according to an embodiment of the present invention.

Detailed Description

In order to make those skilled in the art better understand the technical solution of the present invention, the technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the drawings in the embodiment of the present invention, and it is obvious that the described embodiment is only a part of the embodiment of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be understood that the technical solutions of the embodiments of the present invention may be applied to various communication systems, for example: a Global System for Mobile communications (GSM) System, a Code Division Multiple Access (CDMA) System, a Wideband Code Division Multiple Access (WCDMA) System, a General Packet Radio Service (GPRS), a Long Term Evolution (Long Term Evolution, LTE) System, an LTE Frequency Division Duplex (FDD) System, an LTE Time Division Duplex (TDD), a Universal Mobile Telecommunications System (UMTS) or a Worldwide Interoperability for Microwave Access (WiMAX) communication System, a 5G System, or a New Radio (NR) System.

A Terminal device (UE), which may also be referred to as a Mobile Terminal (Mobile Terminal), a Mobile Terminal device, or the like, may communicate with at least one core Network via a Radio Access Network (RAN, for example), and may be a Mobile Terminal, such as a Mobile phone (or referred to as a "cellular" phone) and a computer having the Mobile Terminal, which may be a portable, pocket, hand-held, computer-embedded, or vehicle-mounted Mobile apparatus, for example, and exchanges language and/or data with the Radio Access Network.

The network device is a device deployed in a radio access network device and configured to receive feedback information for a secondary link, where the network device may be a Base Station, and the Base Station may be a Base Transceiver Station (BTS) in GSM or CDMA, a Base Station (NodeB) in WCDMA, an evolved Node B (eNB or e-NodeB) and a 5G Base Station (gNB) in LTE, and a network-side device in a subsequent evolved communication system, where the terms do not limit the scope of the present invention.

It should be noted that, when describing a specific embodiment, the sequence number of each process does not mean the execution sequence, and the execution sequence of each process should be determined by its function and internal logic, and should not constitute any limitation to the implementation process of the embodiment of the present invention.

First, with reference to fig. 1 and fig. 2, two ways in which a receiving terminal sends feedback information for explaining the receiving condition of a SL data object to a sending terminal in two transmission ways, i.e., multicast and unicast in SideLink (SL) transmission, will be described in detail.

Referring to fig. 1, in one mode, the receiving terminal 12 first sends the feedback information to the network device (e.g., base station) 13, and then the network device 13 sends the feedback information to the sending terminal 11.

As can be seen from fig. 2, in another mode, the receiving terminal 12 first sends the feedback information to the sending terminal 11, and the sending terminal 11 receives the feedback information and then sends the feedback information to the network device 13.

As can be seen from fig. 1 and fig. 2, regardless of the manner used, the receiving terminal sends feedback information to the network device, but in the process of sending feedback information to the network device, the channel carrying the feedback information is not clear, and if the shared channel is used to carry the feedback information, it is difficult for the network device to clearly determine whether to receive the feedback information because the shared channel can also be used to carry other information, which results in inaccurate reception of the feedback information.

In order to solve the above problem, embodiments of the present invention provide a method and a device for transmitting and receiving sidelink information, and a method for transmitting sidelink information according to embodiments of the present invention is described below with reference to fig. 3.

As shown in fig. 3, a method for sending sidelink information according to an embodiment of the present invention is applicable to a terminal device, and the method may include the following steps:

step 301, sending target information, where the target information is used to determine feedback information for the sidelink SL.

The feedback Information for the sidelink may include, but is not limited to, at least one of Hybrid Automatic Repeat reQuest (HARQ) feedback Information and Channel State Information (CSI). Wherein the HARQ feedback information comprises ACK or NACK. And the feedback information may be carried by a Shared Channel, which in one example comprises a Physical Sidelink Shared Channel (psch).

The target information includes, but is not limited to, at least one of a Scheduling Request (SR) and a preset Buffer Status Report (BSR) transmitted on SR resources. That is, step 301 includes at least three embodiments, wherein the first embodiment is to transmit an SR on a preset SR resource; in a second embodiment, a preset BSR is sent; in a third embodiment, the SR is transmitted on a preset SR resource and a preset BSR is transmitted.

The following describes an interaction procedure between the terminal device and the network device in the third embodiment by taking fig. 4 as an example.

As shown in fig. 4, in a Long Term Evolution (LTE) system, the terminal device 41 sends SR and BSR to the network device: (1) when the terminal device 41 needs to report feedback information for the SL to the network device 42, the terminal device 41 first sends an SR on a preset SR resource; (2) after receiving the SR, the network device 42 knows that the terminal device 41 has feedback information to send, and the network device 42 gives an UpLink grant (UpLink grant, UL grant) to the terminal device 41 to schedule the terminal device 41 to send the BSR; (3) the terminal device 41 sends a BSR on the uplink grant given by the network device 42; (4) the network device 42 determines, according to the BSR, feedback information that needs to be sent by the terminal device 41, and gives uplink authorization to the terminal device 41 again, so as to schedule the terminal device 41 to send the feedback information; (5) the terminal device 41 transmits the feedback information to the network device. It is understood that, with the SR and BSR for scheduling feedback information, the network device may achieve accurate reception of feedback information.

In the method for sending sidelink information provided in the embodiments of the present description, since the target information for determining the feedback information for the SL can be sent, the network device can accurately receive the feedback information for the SL, and the communication effectiveness is improved.

The method for transmitting sidelink information according to the embodiment of the present invention will be described in detail with reference to several examples.

In a first example, the target information transmitted in step 301 includes an SR transmitted on a preset SR resource, which is used to determine feedback information for the SL. This example can also be understood as transmitting an SR on a dedicated SR resource, and thus, when the network device receives an SR carried by the dedicated SR resource, it is described that information transmitted next by the terminal device is feedback information for the SL, and therefore, it is possible to determine a time at which the feedback information for the SL is received, and to accurately receive the feedback information for the SL at that time.

On the basis of the first example, optionally, before executing the sending target information in step 301, the method for sending sidelink information provided in the embodiment shown in fig. 3 may further include: determining the preset SR resources based on a preset protocol, namely, pre-defining special SR resources for carrying target information (SR) in the preset protocol; or, the preset SR resource is determined based on configuration information for configuring the preset SR resource, that is, a network device configures a dedicated SR resource for carrying target information (SR) to a terminal device in advance.

Optionally, in the first example, the preset SR resource may be an SR (SL-SR) resource for the SL, or a general (User to Network interface real, uu) SR resource for the User to the Network, that is, the preset SR resource may include the preset SL-SR resource or the preset Uu-SR resource, which is not limited in the embodiment of the present invention.

In a second example, the target information transmitted in step 301 includes an SR transmitted on a preset SR resource, the SR being used to determine feedback information for the SL; the preset SR resource corresponds to the priority of a preset SL data object, the preset SL data object is an SL data object for which the feedback information is specific, and the feedback information is HARQ feedback information.

This example may also be understood as transmitting the SR on a dedicated SR resource used to carry the SR corresponding to the SL data object of the particular priority. In this way, when the network device receives the SR carried by the dedicated SR resource, it is described that the information transmitted next by the terminal device is not only HARQ feedback information for the SL but also HARQ feedback information for the SL data object of a specific priority, and finally, not only an effect of accurately receiving HARQ feedback information for the SL at a corresponding time but also an effect of being able to specify the priority of the SL data object to which the received HARQ feedback information is directed can be obtained, and therefore, the communication effectiveness can be further improved.

On the basis of the second example, optionally, if the preset SR resource is an SL-SR resource, before the sending of the target information in step 301 is executed, the method for sending sidelink information provided in the embodiment shown in fig. 3 may further include: determining the preset SR resource based on configuration information for configuring the preset SR resource corresponding to the priority; that is, the network device configures a dedicated SL-SR resource for carrying target information (SR) to the terminal device in advance, and a corresponding relationship between the dedicated SL-SR resource and the priority of the SL data object, so that the terminal device determines the preset SR resource for carrying the target information.

Or, on the basis of the second example, optionally, if the preset SR resource is a Uu-SR resource, before executing the target information transmission in step 301, the method for transmitting sidelink information according to the embodiment shown in fig. 3 may further include: and determining the preset SR resource based on the mapping relation between the priority and the preset SR resource, wherein the mapping relation can be configured by the network equipment in advance or agreed by a preset protocol.

In a third example, the target information sent in step 301 includes a preset BSR, where the preset BSR is used to determine feedback information for the SL, and before the sending of the target information in step 301 is performed, the method for sending sidelink information provided in the embodiment shown in fig. 3 may further include: determining the pre-configured BSR based on a pre-configured protocol or based on configuration information for configuring the pre-configured BSR.

In the first implementation manner of the third example, a BSR in the related art may be referred to, and a new BSR is introduced as a pre-BSR, where the pre-BSR includes at least one identifier, and the at least one identifier is used for determining the feedback information. Wherein the at least one identifier may be at least one Logical Channel Identifier (LCID), a Destination address identifier (Destination Index), an identifier of the feedback information itself, and the like.

For example, referring to the related art SL BSR, truncated (Truncated) SL BSR, and Uu BSR, a new BSR is introduced as a pre-set BSR. Specifically, the introduced pre-configured BSR may include: BSR for HARQ feedback, BSR for CSI feedback, BSR for HARQ feedback and/or CSI feedback.

In the related art, the BSR generally includes three contents, which are respectively a Destination address identifier (Destination Index), a Logical Channel Group identifier (LCG ID), and a to-be-transmitted data volume (Buffer Size Level), and are used for a terminal device to notify a network device of the to-be-transmitted data volume (usually in units of bytes) in all Logical channels in one Logical Channel Group based on a proximity service Destination address (ProSe Destination).

In the SL BSR, the logical channel group is often divided into 4 groups, and the logical channel group identifier occupies 2 bits in the SL BSR, and is used to indicate the LCG ID corresponding to the buffer area of the terminal device; the length of the destination address identifier can be configured, 16 groups are common, and the destination address identifier occupies 4 bits; the Data volume to be transmitted is arranged in the descending order of the priority of the SL logical channels contained in the LCG, occupies 6 bits, and is used for designating the sum of the remaining effective Data to be transmitted in the Radio Link Control (RLC) layer and the Packet Data Convergence Protocol (PDCP) layer of all the logical channels in the LCG corresponding to the short-range service destination address after all the MAC Protocol Data Units (PDUs) in the Transmission Timing Interval (TTI) for transmitting the BSR are generated by the SL terminal device.

Fig. 5 and fig. 6 respectively show two formats of the SL BSR and the truncated SL BSR, where fig. 5 is a BSR format diagram with an even identifier (index), and fig. 6 is a BSR format diagram with an odd identifier (index). In fig. 5 and 6, one row represents one octet (1 Oct), and N represents the maximum value of the flag.

In the related art, the MAC layer reports the BSR using a MAC Control Element (CE), and the SL BSR and the truncated SL BSR use the same MAC Control Element (CE). Each MAC CE correspondingly adopts an LCID identifier, and table 1 below lists a corresponding relationship between LCID values and code points (codepoint) in an UpLink Shared Channel (UpLink-Shared Channel, UL-SCH).

TABLE 1

The format of the newly introduced BSR used as the pre-configured BSR may be the same as or different from the format of the BSR in the related art (the format shown in fig. 5 or fig. 6).

For example, when the feedback information is ACK or NACK of HARQ, the format of the pre-BSR may be as shown in table 2 below. In table 2, LCIDx (i.e., logical channel identification x) is used to determine HARQ feedback information for SL. The preset BSR shown in table 2 further includes destination address information of ACK/NACK, ACK/NACK data amount information, and ACK/NACK identification information.

TABLE 2

LCIDx
	Destination address information
ACK/NACK data volume information
	Destination address information
ACK/NACK identification information

For another example, when the feedback information is SCI, the format of the BSR may be as shown in table 3 below. In table 3, LCIDy is used to determine the SCI for SL. In addition, the preset BSR shown in table 3 further includes CSI process identifiers, CSI data volume information, CSI destination address information, and CSI identification information. It can be understood that the CSI process id and the CSI id therein may also be used for determining CSI.

TABLE 3

As can be seen from tables 2 and 3, in the embodiment of the present invention, the newly introduced pre-configured BSR may further include at least one of a destination address of the feedback information, an identifier of the feedback information, and data size information of the feedback information.

It can be understood that, if the target information is a pre-configured BSR and the pre-configured BSR includes at least one logical channel identifier LCID for determining feedback information for the SL, a destination address of the feedback information, an identifier of the feedback information, and data amount information of the feedback information, the network device may accurately receive the feedback information according to the pre-configured BSR.

In the second implementation manner of the third example, a preset number of bits may be added to the BSR in the related art to indicate that at least one identifier in the BSR may also be used to determine feedback information for the SL, so as to obtain the preset BSR, where the at least one identifier may be at least one LCID, a destination address identifier, an identifier of the feedback information itself, and so on. Optionally, in the second implementation, the preset BSR may further include a destination address of the feedback information, an identifier of the feedback information, and data volume information of the feedback information.

For example, a preset number of bits are added to the SL BSR, truncated (Truncated) SL BSR, and Uu BSR in the related art to indicate that at least one LCID in the BSR may also be used to determine feedback information for the SL to obtain the element and the BSR. The BSR after the increased preset number of bits may be as shown in table 4.

TABLE 4

LCIDz
	BSR information of logical channels of different destination addresses
Destination address information
	ACK/NACK data volume information
Destination address information
	ACK/NACK data volume information

In table 4, "BSR information of logical channels with different destination addresses" is information included in the BSR in the related art, and the "LCIDz", "destination address information", and "ACK/NACK data amount information" are information included in a preset number of bits that are increased, and the information included in the preset number of bits may be used to determine feedback information for the SL.

It can be understood that, since the preset BSR shown in table 4 also includes at least one logical channel identifier LCID for determining feedback information for the SL, a destination address of the feedback information, and data volume information of the feedback information, when the network device receives the preset BSR shown in table 4, the purpose of accurately receiving the feedback information for the SL can also be achieved based on the preset BSR.

The method for transmitting sidelink information applied to a terminal device is explained above, and a method for receiving sidelink information provided by an embodiment of the present invention is explained below with reference to fig. 7.

As shown in fig. 7, a method for receiving sidelink information provided in an embodiment of the present invention is applied to a network device, and the method may include:

step 701, receiving target information, where the target information is used to determine feedback information for the sidelink SL.

Wherein the feedback information for the secondary link may include, but is not limited to, at least one of HARQ feedback information and CSI; the target information includes, but is not limited to, at least one of an SR and a preset BSR transmitted on preset SR resources; the feedback information may be carried by a shared channel, and the shared channel comprises a physical secondary link shared channel PSSCH.

In the sidelink information receiving method provided in the embodiments of the present specification, the received target information may be used to determine target information of feedback information for the SL, so that the network device may accurately receive the feedback information for the SL, and the communication effectiveness is improved.

The method for receiving sidelink information according to the embodiment of the present invention will be described in detail with reference to several examples.

In a first example, the target information transmitted in step 701 includes an SR received on a preset SR resource, and the SR is used to determine feedback information for the SL. This example can also be understood as that when the network device receives the SR carried by the preset SR resource, it indicates that the information sent next by the terminal device is feedback information for the SL, so that the time for receiving the feedback information for the SL can be determined, and the feedback information for the SL can be accurately received at the time.

On the basis of the first example, optionally, before executing the receiving target information in step 701, the method for receiving sidelink information provided in the embodiment shown in fig. 7 may further include: and sending configuration information for configuring the preset SR resource.

Optionally, in the first example, the preset SR resource includes a preset SL-SR resource or a preset Uu-SR resource, which is not limited in the embodiment of the present invention.

In a second example, the target information received in step 701 includes an SR received on a preset SR resource, the SR being used to determine feedback information for the SL; the preset SR resource corresponds to the priority of a preset SL data object, the preset SL data object is an SL data object for which the feedback information is specific, and the feedback information is HARQ feedback information.

This example may also be understood as receiving an SR on a proprietary SR resource that is used to carry an SR corresponding to a SL data object of a particular priority. In this way, when the network device receives the SR carried by the dedicated SR resource, it is described that the information transmitted next by the terminal device is not only HARQ feedback information for the SL but also HARQ feedback information for the SL data object of a specific priority, and finally, not only an effect of accurately receiving HARQ feedback information for the SL at a corresponding time but also an effect of being able to specify the priority of the SL data object to which the received HARQ feedback information is directed can be obtained, and therefore, the communication effectiveness can be further improved.

On the basis of the second example, optionally, if the preset SR resource is an SL-SR resource, before executing the receiving target information in step 701, the method for receiving sidelink information provided in the embodiment shown in fig. 7 may further include: and sending configuration information for configuring the preset SR resource corresponding to the priority. That is, the network device configures a dedicated SL-SR resource for carrying target information (SR) to the terminal device in advance, and a corresponding relationship between the dedicated SL-SR resource and the priority of the SL data object, so that the terminal device determines the preset SR resource for carrying the target information.

Or, on the basis of the second example, optionally, if the preset SR resource is an SL-SR resource, before executing the receiving target information in step 701, the method for receiving sidelink information provided in the embodiment shown in fig. 7 may further include:

in a third example, the target information received in step 701 includes a preset BSR, which is used to determine feedback information for SL, and before performing the receiving of the target information in step 701, the sidelink information receiving method provided in the embodiment shown in fig. 7 may further include: and sending configuration information for configuring the preset BSR, wherein the preset BSR comprises at least one Logic Channel Identifier (LCID), and the at least one LCID is used for determining the feedback information.

In the first implementation manner of the third example, with reference to a BSR in the related art, a new BSR may be configured in advance for a terminal device as a preset BSR, where the preset BSR includes at least one identifier, and the at least one identifier is used for determining the feedback information. Wherein the at least one identity may be at least one LCID, a destination address identity, an identity of the feedback information itself, and the like.

For example, referring to the related art SL BSR, truncated (Truncated) SL BSR, and Uu BSR, a new BSR is configured as a pre-BSR. Specifically, the configured default BSR may include: BSR for HARQ feedback, BSR for CSI feedback, BSR for HARQ feedback and/or CSI feedback. The newly configured BSR used as the pre-configured BSR may be in the same format as the BSR in the related art, or may be in a different format.

Optionally, the configured preset BSR may further include at least one of a destination address of the feedback information, an identifier of the feedback information, and data volume information of the feedback information.

In the second implementation manner of the third example, a preset number of bits may be added in the BSR in the related art to indicate that at least one identity in the BSR may also be used to determine feedback information for the SL, so as to obtain the preset BSR, where the at least one identity may be at least one LCID, a destination address identity, an identity of the feedback information itself, and so on. Optionally, in the second implementation, the preset BSR may further include a destination address of the feedback information, an identifier of the feedback information, and data volume information of the feedback information.

It can be understood that, if the target information is a preset BSR and the preset BSR includes at least one logical channel identifier LCID for determining feedback information for the SL, a destination address of the feedback information, an identifier of the feedback information, and data volume information of the feedback information, the network device may accurately receive the feedback information according to the preset BSR.

The sidelink information receiving method applied to the network device is explained above, and the terminal device and the network device according to the embodiment of the present invention will be described in detail below with reference to fig. 8 to 9.

Fig. 8 shows a schematic structural diagram of a terminal device according to an embodiment of the present invention, and as shown in fig. 8, the terminal device 800 may include: a first transmitting module 801.

A first sending module 801, configured to send target information, where the target information is used to determine feedback information for the sidelink SL.

The feedback information for the secondary link may include, but is not limited to, at least one of HARQ feedback information and CSI. Wherein the HARQ feedback information comprises ACK or NACK. And the feedback information may be carried by a shared channel, which in one example comprises a PSSCH.

The target information includes, but is not limited to, at least one of an SR and a preset BSR transmitted on preset SR resources.

In the terminal device 800 provided in the embodiment of the present specification, since the target information for determining the feedback information for the SL can be sent, the network device can accurately receive the feedback information for the SL, and the communication effectiveness is improved.

The terminal device 800 provided by the embodiment of the present invention is described in detail below with reference to several examples.

In a first example, the target information includes an SR transmitted on a preset SR resource, and the terminal apparatus 800 may further include: a first determining module, configured to determine the preset SR resource based on a preset protocol before the target information is sent; or determining the preset SR resource based on configuration information for configuring the preset SR resource.

The preset SR resource comprises a preset SL-SR resource or a preset Uu-SR resource.

This example can also be understood that the terminal device 800 sends the SR on the dedicated SR resource, so that when the network device receives the SR carried by the dedicated SR resource, it is described that the information sent next by the terminal device is the feedback information for the SL, and therefore, the time for receiving the feedback information for the SL can be determined, and the feedback information for the SL can be accurately received at the time.

In a second example, the target information includes an SR transmitted on a preset SR resource, where the target information includes an SR transmitted on a preset SR resource, the preset SR resource corresponds to a priority of a preset SL data object, the preset SL data object is an SL data object to which the feedback information is directed, and the feedback information is HARQ feedback information.

On the basis of the second example, optionally, if the preset SR resource is an SL-SR resource, the terminal device 800 may further include: a second determining module, configured to determine, before the target information is sent, the preset SR resource based on configuration information for configuring the preset SR resource corresponding to the priority.

Or, on the basis of the second example, optionally, if the preset SR resource is a preset Uu-SR resource, the terminal device 800 may further include: a third determining module, configured to determine the preset SR resource based on a mapping relationship between the priority and the preset SR resource before the target information is sent.

In a third example, the target information includes the preset BSR, and the terminal device 800 may further include: a fourth determining module, configured to determine the pre-configured BSR based on a pre-configured protocol or based on configuration information for configuring the pre-configured BSR before the target information is sent, where the pre-configured BSR includes at least one logical channel identity LCID, and the at least one LCID is used to determine the feedback information.

In the first implementation manner of the third example, the fourth determining module may refer to a BSR in the related art, and introduce a new BSR as a preset BSR, where the preset BSR includes at least one identifier, and the at least one identifier is used for determining the feedback information. Wherein the at least one identity may be at least one LCID, a destination address identity, an identity of the feedback information itself, and the like. The format of the newly introduced BSR serving as the pre-BSR may be the same as or different from the format of the BSR in the related art (the format shown in fig. 5 or fig. 6).

Optionally, the newly introduced pre-configured BSR may further include at least one of a destination address of the feedback information, an identifier of the feedback information, and data size information of the feedback information.

In the second implementation manner of the third example, the fourth determining module may add a preset number of bits in the BSR in the related art, so as to indicate that at least one identifier in the BSR may also be used to determine feedback information for the SL, so as to obtain the preset BSR, where the at least one identifier may be at least one LCID, a destination address identifier, an identifier of the feedback information itself, and so on. Optionally, in the second implementation, the BSR may further include a destination address of the feedback information, an identifier of the feedback information, and data size information of the feedback information.

The terminal device 800 shown in fig. 8 may be used to implement the embodiments of the sidelink information sending method shown in fig. 3, and please refer to the above method embodiments for relevant points.

The terminal device 800 is described above, and a network device 900 according to an embodiment of the present invention is described below with reference to fig. 9.

Fig. 9 shows a schematic structural diagram of a network device according to an embodiment of the present invention, and as shown in fig. 9, the network device 900 may include: the first receiving module 901.

A first receiving module 901, configured to receive target information, where the target information is used to determine feedback information for a sidelink SL.

In the network device 900 provided in this embodiment of the present specification, since the received target information may be used to determine target information of feedback information for the SL, the network device may accurately receive the feedback information for the SL, and thus communication effectiveness is improved.

In a first example, the target information received in the first receiving module 901 includes an SR received on a preset SR resource, and the SR is used for determining feedback information for the SL. This example can also be understood as that when the network device receives an SR carried by a preset SR resource, it indicates that information sent next by the terminal device is feedback information for the SL, so that a time for receiving the feedback information for the SL can be determined, and the feedback information for the SL can be accurately received at that time.

On the basis of the first example, optionally, the network device 900 may further include: a second sending module, configured to send configuration information for configuring the preset SR resource before the target information is received.

Optionally, the preset SR resource includes a preset SL-SR resource or a preset Uu-SR resource.

In a second example, the target information received in the first receiving module 901 includes an SR received on a preset SR resource, where the SR is used to determine feedback information for the SL; the preset SR resource corresponds to the priority of a preset SL data object, the preset SL data object is an SL data object for which the feedback information is directed, and the feedback information is hybrid automatic repeat request (HARQ) feedback information.

On the basis of the second example, optionally, the network device 900 may further include: a third sending module, configured to send, before the target information is received, configuration information for configuring the preset SR resource corresponding to the priority.

Or, on the basis of the second example, optionally, the network device 900 may further include: a priority determining module, configured to determine the priority based on a mapping relationship between the priority and the preset SR resource, where the mapping relationship may be agreed by a preset protocol.

In a third example, the target information received in the first receiving module 901 includes a preset BSR, which is used for determining feedback information for the SL. Optionally, the network device 900 may further include: a fourth sending module, configured to send configuration information for configuring the preset BSR before the target information is received, where the preset BSR includes at least one logical channel identifier LCID, and the at least one LCID is used to determine the feedback information.

For example, referring to the related art SL BSR, truncated (Truncated) SL BSR, and Uu BSR, a new BSR is configured as a default BSR. Specifically, the configured preset BSR may include: BSR for HARQ feedback, BSR for CSI feedback, BSR for HARQ feedback and/or CSI feedback. The newly configured BSR used as the pre-configured BSR may be in the same format as the BSR in the related art, or may be in a different format.

The network device 900 shown in fig. 9 may be used to implement the embodiments of the sidelink information receiving method shown in fig. 7, and please refer to the above method embodiments for relevant points.

Fig. 10 is a schematic structural diagram of a terminal device according to another embodiment of the present invention. The terminal device 1000 shown in fig. 10 includes: at least one processor 1001, memory 1002, at least one network interface 1004, and a user interface 1003. The various components in terminal device 1000 are coupled together by a bus system 1005. It is understood that bus system 1005 is used to enable communications among the components connected. The bus system 1005 includes a power bus, a control bus, and a status signal bus, in addition to a data bus. For clarity of illustration, the various buses are designated in figure 10 as the bus system 1005.

The user interface 1003 may include, among other things, a display, a keyboard, or a pointing device (e.g., a mouse, trackball, touch pad, or touch screen, among others.

It is to be understood that the memory 1002 in embodiments of the present invention may be either volatile memory or nonvolatile memory, or may include both volatile and nonvolatile memory. The non-volatile memory may be a Read-only memory (ROM), a programmable Read-only memory (PROM), an erasable programmable Read-only memory (erasabprom, EPROM), an electrically erasable programmable Read-only memory (EEPROM), or a flash memory. The volatile memory may be a Random Access Memory (RAM) which functions as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (staticiram, SRAM), dynamic random access memory (dynamic RAM, DRAM), synchronous dynamic random access memory (syncronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM ), enhanced Synchronous DRAM (ESDRAM), synchronous Link DRAM (SLDRAM), and direct memory bus RAM (DRRAM). The memory 1002 of the subject systems and methods is intended to comprise, without being limited to, these and any other suitable types of memory.

In some embodiments, memory 1002 stores the following elements, executable modules or data structures, or a subset or expanded set thereof: an operating system 10021 and applications 10022.

The operating system 10021 includes various system programs, such as a framework layer, a core library layer, a driver layer, and the like, and is used for implementing various basic services and processing hardware-based tasks. The application 10022 includes various applications, such as a media player (MediaPlayer), a Browser (Browser), and the like, and is used to implement various application services. The program implementing the method according to the embodiment of the present invention may be included in the application program 10022.

In this embodiment of the present invention, the terminal device 1000 further includes: a computer program stored in the memory 1002 and capable of running on the processor 1001, where the computer program, when executed by the processor 1001, implements each process of the sidelink information transmission method described above, and can achieve the same technical effect, and is not described herein again to avoid repetition.

The method disclosed by the embodiment of the invention can be applied to the processor 1001 or can be implemented by the processor 1001. The processor 1001 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be implemented by integrated logic circuits of hardware or instructions in software form in the processor 1001. The processor 1001 may be a general-purpose processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, or discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention 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 the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software modules may reside in ram, flash, rom, prom, or eprom, registers, etc. of computer readable storage media known in the art. The computer readable storage medium is located in the memory 1002, and the processor 1001 reads the information in the memory 1002 and combines the hardware to complete the steps of the above-described method. In particular, the computer readable storage medium has stored thereon a computer program which, when executed by the processor 1001, implements the steps of the sidelink information transmission method embodiment as described above.

Referring to fig. 11, fig. 11 is a structural diagram of a network device applied in an embodiment of the present invention, which can implement details of the sidelink information receiving method and achieve the same effect. As shown in fig. 11, the network device 1100 includes: a processor 1101, a transceiver 1102, a memory 1103, a user interface 1104, and a bus interface, wherein:

in this embodiment of the present invention, the network device 1100 further includes: the computer program is stored in the memory 1103 and can run on the processor 1101, and when the computer program is executed by the processor 1101, the computer program implements each process of the sidelink information receiving method described above, and can achieve the same technical effect, and for avoiding repetition, details are not described here again.

In fig. 11, the bus architecture may include any number of interconnected buses and bridges, with at least one processor, represented by the processor 1101, and various circuits, represented by the memory 1103, linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 1102 may be a plurality of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. The user interface 1104 may also be an interface capable of interfacing with a desired device for different end devices, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 may store data used by the processor 1101 in performing operations.

It is to be understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or any combination thereof. For a hardware implementation, the processing unit may be implemented in at least one Application Specific Integrated Circuit (ASIC), a Digital Signal Processor (DSP), a Digital Signal Processing Device (DSPD), a Programmable Logic Device (PLD), a Field Programmable Gate Array (FPGA), a general purpose processor, a controller, a microcontroller, a microprocessor, other electronic units for performing the functions of the invention, or a combination thereof.

For a software implementation, the techniques described in this disclosure may be implemented with modules (e.g., procedures, functions, and so on) that perform the functions described in this disclosure. The software codes may be stored in a memory and executed by a processor. The memory may be implemented within the processor or external to the processor.

An embodiment of the present invention further provides a computer-readable storage medium, where a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, the computer program implements each process of the foregoing secondary link feedback information sending method embodiment, and can achieve the same technical effect, and in order to avoid repetition, details are not repeated here. The computer-readable storage medium may be a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk.

An embodiment of the present invention further provides a computer program product including instructions, and when a computer runs the instructions of the computer program product, the computer executes the method for sending the sidelink feedback information or the method for sending the sidelink feedback information. In particular, the computer program product may be run on the network device described above.

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 implementation. 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 invention.

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

In the embodiments provided in the present invention, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. 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 place, or may be distributed on a plurality of 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 exist alone physically, or two or more units are integrated into 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 invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present invention, and shall cover the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A method for sending sidelink information, which is applied to a terminal device, the method comprising:

transmitting target information for determining feedback information for the sidelink SL;

the target information includes at least one of an SR transmitted on a preset scheduling request SR resource and a preset buffer status report BSR.

2. The method of claim 1,

wherein the target information includes an SR transmitted on a preset SR resource, and before the target information is transmitted, the method further includes:

determining the preset SR resource based on a preset protocol; alternatively, the first and second electrodes may be,

determining the preset SR resource based on configuration information for configuring the preset SR resource.

3. The method of claim 2,

4. The method of claim 1,

the target information includes an SR sent on a preset SR resource, where the preset SR resource corresponds to a priority of a preset SL data object, the preset SL data object is an SL data object to which the feedback information is directed, and the feedback information is HARQ feedback information.

5. The method of claim 4, wherein the preset SR resource is a preset SL-SR resource, and before the sending the target information, the method further comprises:

determining the preset SR resource based on configuration information for configuring the preset SR resource corresponding to the priority.

6. The method of claim 4, wherein the preset SR resource is a preset Uu-SR resource, and wherein before the transmitting the target information, the method further comprises:

and determining the preset SR resource based on the mapping relation between the priority and the preset SR resource.

7. The method of claim 1,

wherein the target information includes the pre-set BSR, and before the transmitting the target information, the method further includes:

determining the preset BSR based on a preset protocol or based on configuration information for configuring the preset BSR, where the preset BSR includes at least one identifier, and the at least one identifier is used for determining the feedback information.

8. The method of claim 7,

the preset BSR further includes at least one of a destination address of the feedback information, an identifier of the feedback information, and data size information of the feedback information.

9. The method of claim 1,

the feedback information comprises at least one of hybrid automatic repeat request (HARQ) feedback information and Channel State Information (CSI); wherein the HARQ feedback information comprises ACK or NACK.

10. The method according to any one of claims 1 to 9,

the feedback information is carried by a shared channel, and the shared channel comprises a physical secondary link shared channel PSSCH.

11. A sidelink information receiving method, applied to a network device, the method comprising:

receiving target information, wherein the target information is used for determining feedback information for a secondary link SL;

12. The method of claim 11,

wherein the target information includes an SR received on a preset SR resource, and before the target information is received, the method further includes:

and sending configuration information for configuring the preset SR resource.

13. The method of claim 12,

14. The method of claim 11,

the target information includes an SR received on a preset SR resource, the preset SR resource corresponds to a priority of a preset SL data object, the preset SL data object is an SL data object to which the feedback information is directed, and the feedback information is HARQ feedback information.

15. The method of claim 14, wherein the predetermined SR resource is a predetermined SL-SR resource, and before the receiving the target information, the method further comprises:

and sending configuration information for configuring the preset SR resource corresponding to the priority.

16. The method of claim 14, wherein the preset SR resource is a preset Uu-SR resource, and wherein before the receiving the target information, the method further comprises:

and determining the priority based on the mapping relation between the priority and the preset SR resource.

17. The method of claim 11, wherein the target information comprises the pre-set BSR, and wherein, prior to the receiving the target information, the method further comprises:

and sending configuration information for configuring the preset BSR, wherein the preset BSR comprises at least one identifier, and the at least one identifier is used for determining the feedback information.

18. The method of claim 11,

19. The method of claim 18,

20. The method of any one of claims 11-18,

21. A terminal device, characterized in that the terminal device comprises:

a first sending module, configured to send target information, where the target information is used to determine feedback information for a sidelink SL;

22. The terminal device of claim 21,

wherein the target information includes an SR sent on a preset SR resource, and the terminal device further includes:

a first determining module, configured to determine the preset SR resource based on a preset protocol before the target information is sent; or determining the preset SR resource based on configuration information for configuring the preset SR resource.

23. The terminal device of claim 21,

24. The terminal device of claim 23, wherein the preset SR resource is a preset SL-SR resource, and the terminal device further comprises:

a second determining module, configured to determine, before the target information is sent, the preset SR resource based on configuration information for configuring the preset SR resource corresponding to the priority.

25. The terminal device of claim 23, wherein the preset SR resource is a preset Uu-SR resource, and wherein the terminal device further comprises:

a third determining module, configured to determine the preset SR resource based on a mapping relationship between the priority and the preset SR resource before the target information is sent.

26. The terminal device of claim 21,

wherein the target information includes the preset BSR, and the terminal device further includes:

a fourth determining module, configured to determine the pre-configured BSR based on a pre-configured protocol or based on configuration information for configuring the pre-configured BSR before the target information is sent, where the pre-configured BSR includes at least one identifier, and the at least one identifier is used to determine the feedback information.

27. A network device, characterized in that the network device comprises:

a first receiving module, configured to receive target information, where the target information is used to determine feedback information for a sidelink SL;

28. The network device of claim 27,

wherein the target information includes an SR received on a preset SR resource, and the network device further includes:

a second sending module, configured to send configuration information for configuring the preset SR resource before the target information is received.

29. The network device of claim 27,

the target information includes an SR received on a preset SR resource, where the preset SR resource corresponds to a priority of a preset SL data object, the preset SL data object is an SL data object to which the feedback information is directed, and the feedback information is HARQ feedback information.

30. The method of claim 29, wherein the preset SR resource is a preset SL-SR resource, and wherein the network device further comprises:

a third sending module, configured to send, before the target information is received, configuration information for configuring the preset SR resource corresponding to the priority.

31. The method of claim 29, wherein the preset SR resource is a preset Uu-SR resource, and wherein the network device further comprises:

and the priority determining module is used for determining the priority based on the mapping relation between the priority and the preset SR resource.

32. The network device of claim 27, wherein the target information comprises the pre-configured BSR, and wherein the network device further comprises:

a fourth sending module, configured to send configuration information for configuring the preset BSR before the target information is received, where the preset BSR includes at least one identifier, and the at least one identifier is used to determine the feedback information.

33. A terminal device, characterized in that it comprises a memory, a processor and a wireless communication program stored on said memory and running on said processor, said wireless communication program, when executed by said processor, implementing the steps of the method according to any one of claims 1 to 10.

34. A network device comprising a memory, a processor, and a wireless communication program stored on the memory and executed on the processor, the wireless communication program when executed by the processor implementing the steps of the method of any one of claims 11-20.

35. A computer readable medium having stored thereon a wireless communication program which, when executed by a processor, carries out the steps of the method according to any one of claims 1-20.