CN116073966A

CN116073966A - Side uplink transmission method and device, network equipment and terminal equipment

Info

Publication number: CN116073966A
Application number: CN202111277412.6A
Authority: CN
Inventors: 刘星
Original assignee: Spreadtrum Communications Shanghai Co Ltd
Current assignee: Spreadtrum Communications Shanghai Co Ltd
Priority date: 2021-10-29
Filing date: 2021-10-29
Publication date: 2023-05-05
Also published as: WO2023071752A1

Abstract

The application provides a method and a device for transmitting a side uplink, network equipment and terminal equipment, and relates to the technical field of communication, wherein the method comprises the following steps: the network device sends first side link configuration information to the terminal device, wherein the first side link configuration information is used for configuring transmission parameters of an unlicensed frequency band of a side link, and correspondingly, the terminal device receives the first side link configuration information and communicates on the unlicensed frequency band according to the first side link configuration information. By using the scheme, the reliability of side-link management can be improved.

Description

Side uplink transmission method and device, network equipment and terminal equipment

Technical Field

The present invention relates to the field of communications technologies, and in particular, to a method and an apparatus for transmitting a side uplink, and also relates to a network device and a terminal device.

Background

In a cellular network, a terminal device and a base station device communicate, and a link between the terminal device and the base station device is referred to as an Uplink (UL) or a Downlink (DL), and an interface is referred to as a Uu interface. Communication can also be directly performed between different terminal devices, and the link between the terminal devices is called a Sidelink (SL), and the interface is called a PC5 interface. A schematic diagram of the uplink, downlink and side-links is shown in fig. 1.

In SL, when the terminal device works in an unlicensed band, resources are required to be acquired through a preemption mechanism to perform transmission, so that there may be a case where the terminal device cannot perform transmission due to a failure in preempting the resources, and at this time, it may be mistakenly considered that a radio link failure (Radio link failure, RLF) occurs, so that the reliability of the SL link management function is low.

Disclosure of Invention

The embodiment of the application provides a side uplink transmission method and device, network equipment and terminal equipment, so as to solve the problem of low reliability of SL link management function in the prior art.

In order to solve the technical problems, the embodiment of the application provides the following technical scheme:

in one aspect, an embodiment of the present application provides a method for side uplink transmission, including: receiving first side link configuration information, wherein the first side link configuration information is used for configuring transmission parameters of unlicensed frequency bands of a side link; and communicating on an unlicensed frequency band according to the first side uplink configuration information.

Optionally, the method further comprises: receiving second side uplink configuration information, wherein the second side uplink configuration information is used for configuring transmission parameters of an authorized frequency band of a side uplink; and communicating on an authorized frequency band according to the second side uplink configuration information.

Optionally, the first side uplink configuration information includes information for determining a value of a transmission parameter of the unlicensed band, and the second side uplink configuration information includes a value of a transmission parameter of the licensed band, the value of the transmission parameter of the unlicensed band being different from the value of the transmission parameter of the licensed band.

Optionally, the information for determining the value of the transmission parameter of the unlicensed band is the value of the transmission parameter of the unlicensed band; or, the information for determining the value of the transmission parameter of the unlicensed band is a ratio between the value of the transmission parameter of the unlicensed band and the value of the transmission parameter of the licensed band.

Optionally, the transmission parameters include at least one parameter, and the value of the first side-link configuration information configuration is greater than the value of the second side-link configuration information configuration for the same parameter in the at least one parameter.

Optionally, the communicating on the licensed band according to the second side uplink configuration information includes: and under the condition that the frequency band where the current sending carrier and/or the current receiving carrier is/are the authorized frequency band, communicating on the authorized frequency band according to the second side uplink configuration information.

Optionally, the communicating on the unlicensed frequency band according to the first side uplink configuration information includes: and under the condition that the frequency band where the current sending carrier and/or the current receiving carrier is/are an unlicensed frequency band, communicating on the unlicensed frequency band according to the first side uplink configuration information.

Optionally, the transmission parameters include any one or more of: the maximum number of HARQ DTX discontinuous transmission times is requested by the hybrid automatic repeat request and the duration of a timer is used for side uplink management.

In another aspect, an embodiment of the present application further provides a method for side uplink transmission, where the method includes: and sending first side link configuration information to the terminal equipment, wherein the first side link configuration information is used for configuring transmission parameters of unlicensed frequency bands of side links.

Optionally, the method further comprises: and sending second side-link configuration information to the terminal equipment, wherein the second side-link configuration information is used for configuring transmission parameters of an authorized frequency band of a side-link.

Optionally, the first side uplink configuration information includes information for determining a value of a transmission parameter of the unlicensed band, and the second side uplink configuration information includes a value of a transmission parameter of the licensed band, the transmission parameter of the unlicensed band being different from the value of the transmission parameter of the licensed band.

In another aspect, an embodiment of the present application further provides a side uplink transmission apparatus, where the apparatus includes: a first processing module and a first communication module;

the first processing module is configured to receive, through the first communication module, first side uplink configuration information, where the first side uplink configuration information is used to configure transmission parameters of an unlicensed frequency band of a side uplink;

The first processing module is further configured to communicate on an unlicensed frequency band through the first communication module according to the first side uplink configuration information.

Optionally, the first processing module is further configured to receive, through the first communication module, second side uplink configuration information, where the second side uplink configuration information is used to configure transmission parameters of an licensed band of a side uplink; the first processing module is further configured to communicate on an authorized frequency band through the first communication module according to the second side uplink configuration information.

Optionally, the first processing module is specifically configured to: and under the condition that the frequency band where the current sending carrier and/or the current receiving carrier is/are the authorized frequency band, communicating on the authorized frequency band through the communication module according to the second side uplink configuration information.

Optionally, the first processing module is specifically configured to: and under the condition that the frequency band where the current sending carrier and/or the current receiving carrier is/are an unlicensed frequency band, communicating on the unlicensed frequency band through the communication module according to the first side uplink configuration information.

In another aspect, an embodiment of the present application further provides a side uplink transmission apparatus, where the apparatus includes: the second processing module and the second communication module;

The second processing module is configured to send, to the terminal device through the second communication module, first side uplink configuration information, where the first side uplink configuration information is used to configure transmission parameters of an unlicensed frequency band of a side uplink.

Optionally, the second processing module is further configured to send second side uplink configuration information to the terminal device through the second communication module, where the second side uplink configuration information is used to configure transmission parameters of an licensed band of a side uplink.

On the other hand, the embodiment of the application also provides a terminal device, which comprises the side uplink transmission device.

On the other hand, the embodiment of the application also provides a network device, which is characterized by comprising the side uplink transmission device described in any one of the previous embodiments.

In another aspect, embodiments of the present application also provide a computer readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, on which a computer program is stored, which when executed by a processor causes the methods described in the previous items to be performed.

In another aspect, an embodiment of the present application further provides a side uplink transmission device, including a memory and a processor, where the memory stores a computer program that can be executed on the processor, and the processor executes the methods described in the previous embodiments when the processor executes the computer program.

In another aspect, an embodiment of the present application further provides a side uplink transmission device, including a memory and a processor, where the memory stores a computer program that can be executed on the processor, and when the processor executes the computer program, the method is performed.

According to the method and the device for transmitting the side link, which are provided by the embodiment of the invention, aiming at the characteristic that resources are required to be acquired through a preemption mechanism when the terminal equipment works on the unlicensed frequency band, the network side independently configures the transmission parameters of the unlicensed frequency band of the side link of the terminal equipment, so that the transmission parameters are matched with the transmission characteristics of the unlicensed frequency band, the situation that the terminal equipment cannot transmit due to the failure of preempting the resources in the unlicensed frequency band is prevented from being misjudged as the occurrence of radio link failure, and the reliability of SL link management is improved. Accordingly, when the terminal device performs the side-link communication, the terminal device may perform the communication on the unlicensed frequency band according to the configured transmission parameters of the unlicensed frequency band of the side-link.

Further, by configuring different transmission parameters for the authorized frequency band and the unauthorized frequency band, the corresponding transmission parameters can be adapted to the transmission characteristics of different carriers, and accordingly, the terminal device can communicate by adopting the transmission parameters corresponding to the frequency band according to the frequency band where the current carrier is located, so that a reliable management function is provided for the transmission of the SL link on different frequency bands.

Drawings

FIG. 1 is a schematic diagram of an uplink and a downlink and a side link in the prior art;

fig. 2 is a flowchart of a method of side-link transmission according to an embodiment of the present application;

FIG. 3 is a schematic diagram of a transmission parameter configuration and application in an embodiment of the present application;

fig. 4 is another schematic diagram of transmission parameter configuration and application in the embodiment of the present application;

fig. 5 is another schematic diagram of transmission parameter configuration and application in the embodiment of the present application;

fig. 6 is a schematic structural view of a side-link transmission device according to an embodiment of the present application;

fig. 7 is another structural diagram of a side-link transmission apparatus according to an embodiment of the present application;

fig. 8 is a schematic diagram of a hardware structure of an electronic device according to an embodiment of the present application.

Detailed Description

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

The system and corresponding terms as applicable to the present application will first be described.

The technical solution of the present application may be applied to a fifth generation (5th Generation,5G) communication system, and may also be applied to a fourth generation (4th Generation,4G) and a third generation (3rd Generation,3G) communication system, and may also be applied to various new communication systems in the future, such as a sixth generation (6th Generation,6G) and a seventh generation (7th Generation,7G), which are not limited in this embodiment of the present application.

The technical solution of the present application is also applicable to other network architectures, including but not limited to a relay network architecture, a dual link architecture, a Vehicle-to-Everything (V2X) architecture, a Device-to-Device (D2D) architecture, and so on.

The device related to the embodiment of the application comprises core network equipment, access network equipment and terminal equipment.

An access network device in the embodiments of the present application is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function, for example, a Base Station (BS), a base station controller, a Relay Node (RN), and the like. A base station may be, for example, a base Radio transceiver station (Base Transceiver Station, BTS) in a 2G network, a node B (NodeB) in a 3G network, an evolved NodeB (eNB) in a 4G network, an Access Point (AP) in a wireless local area network (Wireless Local Area Networks, WLAN), a Next generation base station node (gNB) in a 5G New Radio (NR), and a continuously evolving NodeB (ng-eNB), where communication between the gNB and the terminal device is performed using NR technology, and an evolved universal terrestrial Radio Access (Evolved Universal Terrestrial Radio Access, E-UTRA) technology is performed between the gNB and the terminal device, both of which may be connected to the 5G core network. The base station in the embodiment of the present application also includes a device or the like that provides a base station function in a new communication system in the future. A base station controller, which may also be referred to as a base station controller device, is a means for managing base stations, such as a base station controller (Base Station Controller, BSC) in a 2G network, a radio network controller (Radio Network Controller, RNC) in a 3G network, and may also refer to means for controlling and managing base stations in a new future communication system.

The terminal device in the embodiments of the present application may also be referred to as a terminal, a User Equipment (UE), an access terminal, a subscriber unit, a subscriber Station, a Mobile Station (MS), a remote Station, a remote terminal, a Mobile device, a User terminal, a wireless communication device, a User agent, or a User Equipment. The terminal device may be a cellular telephone, a cordless telephone, a session initiation protocol (Session Initiation Protocol, SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital assistant (Personal Digital Assistant, PDA), a handheld device with wireless communication capabilities, a computing device or other processing device connected to a wireless modem, 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 (Public Land Mobile Network, PLMN), etc., as the embodiments of the application are not limited in this respect.

When the terminal device performs data transmission on the SL, it needs to first acquire SL configuration information, such as timer configuration (e.g., duration configuration of a timer), and configuration of the upper limit (which may be configured by the field "SL-maxnumconducivedtx") of the number of discontinuous transmissions (Discontinuous Transmission, DTX) of the continuous hybrid automatic repeat request (Hybrid Automatic Repeat reQuest, HARQ), and the like, and the terminal device performs SL transmission according to the SL configuration information.

For example, the SL configuration information may include configuration information of a timer T400, after the first terminal device sends a SL RRC reconfiguration message (rrcrecfiguration sidelink) to the second terminal device, the timer T400 is started, and if the timer T400 times out, if a SL RRC reconfiguration failure message (rrcrecfiguration failure message) or a SL RRC reconfiguration complete message (rrcrecfiguration sidelink) returned by the second terminal device is not received, a SL link failure is considered to occur.

For another example, the SL configuration information may include configuration information of a timer T5000, and when the SL connection is established, after the first terminal device sends the direct link establishment request message (DIRECT LINK ESTABLISHMENT REQUEST) to the second terminal device, the timer T5000 is started, and if the direct link establishment reception (DIRECT LINK ESTABLISHMENT ACCEPT) or the direct link establishment rejection (DIRECT LINK ESTABLISHMENT REJECT) message is not received before the timer T5000 times out, the direct link establishment request message is resent, or the direct link establishment procedure is terminated. After a timeout of T5000, if the message is not received, then SL link failure is considered to occur. For another example, the SL configuration information may include an upper limit (assumed to be X) on the number of HARQ DTX, and when the first terminal device transmits any data packet to the second terminal device, HARQ feedback from the second terminal device is not received X consecutive times, and then it is considered that an SL link failure occurs.

When two frequency bands, namely an authorized frequency band and an unauthorized frequency band exist on the SL, the terminal equipment needs to acquire resources through a preemption mechanism on the unauthorized frequency band. If the same set of SL configuration parameters is configured for both the licensed and unlicensed bands, for example, the same duration of T400 is used, when the terminal device operates in the unlicensed band, there may be a case where the second terminal device cannot feed back because of a resource preemption failure, and when T400 times out, the first terminal device may misthink that an SL link failure occurs.

In view of the foregoing, an embodiment of the present application provides a side uplink transmission method, where an authorized frequency band and an unauthorized frequency band of SL are respectively configured, and accordingly, a terminal device may select, according to a frequency band where a current carrier is located, a corresponding transmission parameter to perform SL transmission. Referring to fig. 2, the method includes:

201. the network device sends first side link configuration information to the terminal device, wherein the first side link configuration information is used for configuring transmission parameters of unlicensed frequency bands of side links. Correspondingly, the terminal device receives the first side uplink configuration information.

The network device may be a core network device or an access network device, if the core network device may send the first side uplink configuration information to the access network device, and the access network device transparently transmits the first side uplink configuration information to the terminal device. By way of example, the core network device may be an AMF (Access and mobility management Function ), proSe Function (Proximity service Function, proximity services Function), etc.

Optionally, the transmission parameters in the present application may include one or more parameters, such as any one or more of the following: the duration of the timer, the maximum number of HARQ DTX, etc. Wherein the timer is used for performing side-link management.

Illustratively, the timers may include T400 and/or T5000, and may include other timers for side-link management.

It should be noted that the transmission parameters may introduce a new field into the existing configuration information to represent the configuration information of the unlicensed link.

It should be noted that, in practical application, a new field may be introduced in the existing configuration information to represent the configuration information of the unlicensed link.

Optionally, before step 201, the method may further include: the network device generates first side uplink configuration information.

202. The terminal device communicates on the unlicensed band according to the first side uplink configuration information.

Optionally, step 202 may include, in specific implementations: and under the condition that the frequency band where the current sending carrier and/or the current receiving carrier is/are an unlicensed frequency band, communicating on the unlicensed frequency band according to the first side uplink configuration information.

In order to improve reliability of the SL link management function, in the embodiment of the present application, the network device configures the transmission parameters of the unlicensed frequency band for the terminal device separately, and according to the above description, it is known that if the network device adopts the transmission parameters of the licensed frequency band on the unlicensed frequency band, misjudgment of the RLF will be caused, so by configuring the transmission parameters of the unlicensed frequency band separately, the transmission parameters suitable for the unlicensed frequency band can be flexibly configured according to the characteristics of the unlicensed frequency band, thereby improving reliability of the SL link management function.

Optionally, referring to fig. 2, the method may further include: 203. the network device sends second side-link configuration information to the terminal device, wherein the second side-link configuration information is used for configuring transmission parameters of an authorized frequency band of the side-link. Corresponding to the above. The terminal device receives the second side uplink configuration information.

The first side uplink configuration information and the second side uplink configuration information may be placed in the same message or may be placed in different messages, which is not limited in this application. The message may be a proprietary signaling or system message, etc., and the embodiments of the present application are not limited in this regard.

Optionally, before step 203, the method further includes: the network device generates second side uplink configuration information.

204. And the terminal equipment communicates on the authorized frequency band according to the second side uplink configuration information.

Optionally, step 204 may include, in specific implementations:

and under the condition that the frequency band where the current sending carrier and/or the current receiving carrier is/are the authorized frequency band, communicating on the authorized frequency band according to the second side uplink configuration information.

When the terminal equipment performs side-link transmission, corresponding transmission parameters can be selected for communication according to configuration information configured by the network equipment and aiming at unlicensed frequency bands and licensed frequency bands and the frequency band where the current carrier is located.

Wherein, the execution sequence between any one of the step 201 and the step 202 and any one of the step 203 and the step 204 is not sequential.

Alternatively, the information for determining the value of the transmission parameter of the unlicensed band may be in the following two cases:

Case 1, a value of a transmission parameter used for determining the unlicensed frequency band is a value of a transmission parameter of the unlicensed frequency band.

In case 1, the terminal device may determine the transmission parameters of the unlicensed band directly according to the first side uplink configuration information.

Case 2, the information for determining the value of the transmission parameter of the unlicensed band is a ratio between the value of the transmission parameter of the unlicensed band and the value of the transmission parameter of the licensed band.

In case 2, the terminal device may calculate the transmission parameter of the unlicensed band according to the ratio and the value of the transmission parameter of the licensed band.

In case 2, it should be noted that the ratio may be the same or different for different parameters in the transmission parameters, which is not limited in this application. If the ratio is the same for all of the transmission parameters, the first side-link configuration information may be configured with only one value, thereby reducing signaling overhead.

Case 3, the information for determining the value of the transmission parameter of the unlicensed band is a difference between the value of the transmission parameter of the unlicensed band and the value of the transmission parameter of the licensed band.

In case 3, the terminal device may calculate the transmission parameter of the unlicensed band according to the difference value and the value of the transmission parameter of the licensed band.

In case 3, it should be noted that the difference may be the same or different for different parameters in the transmission parameters, which is not limited in this application. If the difference is the same for all of the transmission parameters, the first side-link configuration information may be configured with only one value, thereby reducing signaling overhead.

Of course, the information used for determining the value of the transmission parameter of the unlicensed band may also be other information, which is not limited in this application.

Optionally, the transmission parameters include at least one parameter, and for the same parameter in the at least one parameter, the value of the first side-link configuration information configuration is greater than the value of the second side-link configuration information configuration, such as a duration T1 of T400 of the unlicensed band is greater than a duration T2 of T400 of the licensed band. Under the condition that the resource preemption failure of the opposite terminal equipment is not fed back in time when the transmission is carried out in the unlicensed frequency band, the SL link failure is misjudged when the time length T2 of the T400 is reached, and the SL link failure is judged after the time length T1 of the T400 is reached, so that the transmission in the unlicensed frequency band can be better ensured, and the reliability of SL link management is improved.

In practical application, transmission parameters corresponding to the authorized frequency band and the unauthorized frequency band may be completely or partially issued to the terminal device by the network device or provided by a protocol, which is not limited in the embodiments of the present application.

In the embodiment of the present application, the network side configures transmission parameters of an unlicensed band of a side link of a terminal device independently, that is, adopts two sets of transmission parameters, that is, configures the transmission parameters of the unlicensed band and the transmission parameters of an licensed band of the side link respectively, according to the characteristic that resources need to be acquired by a preemption mechanism when the terminal device works on the unlicensed band. Further, different transmission parameters are configured for the licensed band and the unlicensed band of the side link. Accordingly, when the terminal device performs the side-link transmission, the side-link transmission can be performed by adopting the transmission parameters corresponding to the frequency band according to the frequency band where the current carrier is located, that is, the communication is performed on the unlicensed frequency band according to the transmission parameters of the unlicensed frequency band of the configured side-link, and the communication is performed on the licensed frequency band according to the transmission parameters of the licensed frequency band of the configured side-link. Different transmission parameters are configured for the authorized frequency band and the unauthorized frequency band, so that the corresponding transmission parameters can be adapted to the transmission characteristics of different carriers, the situation that the terminal equipment cannot transmit due to resource preemption failure is effectively avoided to be misjudged as the situation of SL link failure, and the reliability of an SL link management function is further improved.

For example, in the case of configuring the above transmission parameters by the access network device, there may be a plurality of different configurations, such as:

(1) In the case that the terminal device is in a connected state, the access network device may send the first side uplink configuration information and/or the second side uplink configuration information to the terminal device through dedicated signaling.

(2) In case the terminal device is in idle state or inactive state, the access network device may broadcast the first side-link configuration information and/or the second side-link SL configuration information via a system information block (System information block, SIB).

In addition, under the condition that the terminal equipment is located outside the coverage area of the access network equipment and cannot receive the signal of the access network equipment, the terminal equipment can acquire corresponding transmission parameters through the stored preconfigured information.

In order to make the above embodiments of the present application clearer, the implementation process of the above embodiments is exemplarily described by using the embodiments shown in fig. 3, fig. 4 and fig. 5, where the embodiments shown in fig. 3, fig. 4 and fig. 5 are different in that the transmission parameters of the embodiment shown in fig. 3 include a duration of T5000, the transmission parameters of the embodiment shown in fig. 4 include an upper limit of the number of HARQ DTX, and the transmission parameters of the embodiment shown in fig. 5 include a duration of T5000. The process shown in fig. 3, fig. 4, and fig. 5 will be described by taking a network device as an example of a base station, and the implementation processes of fig. 3, fig. 4, and fig. 5 will be described below. Fig. 3 is a schematic diagram of transmission parameter configuration and application in the embodiment of the present application.

In step 31, the base station transmits first side link configuration information to the first terminal device, for example, broadcasts side link configuration information through SIB to configure transmission parameters of unlicensed frequency bands of the side links, where the transmission parameters include duration of a timer T5000 corresponding to the unlicensed frequency bands.

It should be noted that, the transmission parameter corresponding to the licensed band may be determined by the second side uplink configuration information sent by the base station, or may be provided by a protocol.

In step 32, the first terminal device saves transmission parameters of unlicensed bands configured by the base station.

In step 33, when the first terminal device needs to establish a SL connection with the second terminal device, the first terminal device sends a direct link establishment request message (DIRECT LINK ESTABLISHMENT REQUEST) to the second terminal device.

If the frequency band where the current transmission carrier is located is an unlicensed frequency band, in step 34, the first terminal device starts a timer T5000 corresponding to the unlicensed frequency band.

The first terminal device does not receive the direct link establishment reception (DIRECT LINK ESTABLISHMENT ACCEPT) or the direct link establishment rejection (DIRECT LINK ESTABLISHMENT REJECT) message sent by the second terminal device before the timer T5000 expires, and therefore resends the direct link establishment request message in step 35.

In step 36, the timer T5000 times out, and the first terminal device determines that a SL link failure has occurred.

Because the value of the duration of the T5000 of the unlicensed frequency band is greater than the value of the duration of the T5000 of the licensed frequency band, for example, the duration of the T5000 of the unlicensed frequency band is T1, and the duration of the T5000 of the licensed frequency band is T2, T1> T2, a longer waiting time can be provided for receiving the direct link establishment receiving or direct link establishment rejecting message, so that the time occupied by the fact that the message cannot be sent due to resource preemption failure of the second terminal device is compensated to a certain extent, and the reliability of side link management is improved.

Fig. 4 is another schematic diagram of transmission parameter configuration and application in the embodiment of the present application.

In step 41, the base station sends first side uplink configuration information and second side uplink configuration information to the first terminal device, for example, the configuration information may be sent through dedicated signaling, where the first side uplink configuration information includes transmission parameters corresponding to an unlicensed frequency band: continuous HARQ DTX upper limit (e.g. 3).

In step 42, the first terminal device sends data a to the second terminal device, and repeatedly sends data a since HARQ feedback of the second terminal device is not received.

If the frequency band in which the current received carrier is located is an unlicensed frequency band, in step 43, after the number of times that the first terminal device repeatedly sends the data a to the second terminal device reaches 3, it is determined that the SL link failure occurs.

Since the upper limit (assumed to be 3) of the number of HARQ DTX in the unlicensed band is greater than the upper limit (assumed to be 2) of the number of HARQ DTX in the licensed band, after the first terminal transmits the data packet to the second terminal, the first terminal continuously receives no HARQ feedback from the second terminal 3 times, and then considers that the SL link failure occurs, and the number of times of repeated transmission of the data packet is increased relative to the upper limit of the number of HARQ DTX in the licensed band, so that the number of times of data retransmission occupied by the second terminal due to failure of preempting resources is also compensated to a certain extent, thereby improving the reliability of side uplink management.

Fig. 5 is another schematic diagram of transmission parameter configuration and application in the embodiment of the present application.

In step 51, the base station sends first side uplink configuration information and second side uplink configuration information to the first terminal device, the first terminal device receives the first side uplink configuration information and the second side uplink configuration information sent by the base station, the second side uplink configuration information includes a duration T1 of a timer T400 of an authorized frequency band, the first side uplink configuration information includes a difference Δt between a duration T2 of the timer T400 corresponding to an unauthorized frequency band and the timer T400 corresponding to the authorized frequency band, and Δt is greater than 0.

In step 52, the first terminal device determines that the duration T2 of the timer T400 corresponding to the unlicensed band is t1+ + Δt.

In step 53, the first terminal device needs to interact configuration information with the second terminal device, and the first terminal device sends a SL RRC reconfiguration message to the second terminal device.

If the frequency band where the current transmission carrier is located is an unlicensed frequency band, in step 54, a timer T400 corresponding to the unlicensed frequency band is started, and the duration of the timer T400 is t1+ [ delta ] T.

When the timer T400 reaches t1+ [ delta ] T, the first terminal device does not receive the SL RRC reconfiguration failure message or the SL RRC reconfiguration complete message returned from the second terminal device, and thus determines that the SL link failure has occurred in step 55.

Because the value of the duration of the T400 of the unlicensed frequency band is larger than that of the duration of the T400 of the licensed frequency band, longer waiting time can be provided for receiving the SL RRC reconfiguration failure message or the SL RRC reconfiguration completion message, so that the time occupied by the fact that the message cannot be sent due to resource preemption failure of the second terminal equipment is compensated to a certain extent, and the reliability of side uplink management is improved.

It should be noted that, the steps in the foregoing embodiments are only schematically described, and do not limit the specific implementation steps and the sequence of the embodiments of the present application.

According to the method for transmitting the side link, the transmission parameters of the authorized frequency band and the unauthorized frequency band of the side link are respectively configured aiming at the characteristic that resources are required to be acquired through a preemption mechanism when the terminal equipment works on the unauthorized frequency band, so that the configured transmission parameters can be respectively adapted to the authorized frequency band and the unauthorized frequency band. Accordingly, when the terminal equipment performs SL communication, the transmission parameters corresponding to the frequency band can be selected for communication according to the frequency band where the current carrier is located, and due to the fact that the transmission parameters of the authorized frequency band and the unauthorized frequency band are respectively configured, the corresponding transmission parameters can be adapted to the transmission characteristics of different carriers, the situation that the receiving terminal equipment cannot feed back due to resource preemption failure is effectively avoided to be misjudged as the situation of SL link failure, and therefore reliability of SL link management is improved.

Accordingly, the present embodiments also provide a side-link transmission apparatus, as shown in fig. 6, in a non-limiting embodiment, the side-link transmission apparatus 600 includes: a first processing module 601 and a first communication module 602. Wherein: the first processing module 601 is configured to receive, through the first communication module 602, first side-link configuration information, where the first side-link configuration information is used to configure transmission parameters of an unlicensed band of a side-link; the first processing module 601 is further configured to communicate on an unlicensed frequency band through the first communication module 602 according to the first side-link configuration information.

Further, in another non-limiting embodiment, the first processing module 601 is further configured to receive, through the first communication module 602, second side uplink configuration information, where the second side uplink configuration information is used to configure transmission parameters of an licensed band of a side uplink; the first processing module 601 is further configured to communicate on an licensed band through the first communication module 602 according to the second side uplink configuration information.

It should be noted that, the first processing module 601 may specifically perform communication on the licensed band through the communication module according to the second side uplink configuration information when the band where the current transmission carrier and/or the current reception carrier is located is the licensed band; and/or under the condition that the frequency band where the current sending carrier and/or the current receiving carrier is/are an unlicensed frequency band, communicating on the unlicensed frequency band through the communication module according to the first side uplink configuration information.

Correspondingly, the embodiment of the application also provides a terminal device, which comprises the side uplink transmission device shown in the figure 6. The network device may be a core network device or a base station.

Accordingly, the embodiment of the present application further provides a side-link transmission device, as shown in fig. 7, in a non-limiting embodiment, the side-link transmission device 700 includes the following modules: a second processing module 701 and a second communication module 702. Wherein: the second processing module 701 is configured to send, to the terminal device, first side-link configuration information through the second communication module 702, where the first side-link configuration information is used to configure transmission parameters of an unlicensed band of a side-link.

In another non-limiting embodiment, the second processing module 701 is further configured to send second side uplink configuration information to the terminal device through the second communication module 702, where the second side uplink configuration information is used to configure transmission parameters of an licensed band of the side uplink. .

The form, content, and transmission manner of the first side uplink configuration information and the second side uplink configuration information may be referred to the foregoing description in the embodiments of the side uplink transmission method of the present application, and are not repeated herein.

Correspondingly, the embodiment of the application also provides a network device, which comprises the side uplink transmission device shown in the above figure 7. The network device may be a core network device or a base station.

For more details of the working principles and working manners of the above devices, reference may be made to the foregoing related descriptions in the corresponding method embodiments, which are not repeated herein.

According to the side-link transmission device provided by the embodiment of the invention, aiming at the characteristic that resources are required to be acquired through a preemption mechanism when the terminal equipment works on an unlicensed frequency band, the transmission parameters of the unlicensed frequency band of the side-link are independently configured, so that the configured transmission parameters are respectively matched with the transmission characteristics of the unlicensed frequency band, the situation that the terminal equipment cannot transmit due to resource preemption failure in the unlicensed frequency band is avoided from being misjudged as radio link failure, and the reliability of SL link management is improved. Accordingly, when the terminal device performs the side-link communication, the terminal device may perform the communication according to the transmission parameters of the unlicensed frequency band of the configured side-link.

In a specific implementation, the above-mentioned side-uplink transmission device may correspond to a Chip of a corresponding function in the network device and/or the terminal device, such as an SOC (System-On-a-Chip), a baseband Chip, a Chip module, etc.

In a specific implementation, regarding each apparatus and each module/unit included in each product described in the above embodiments, it may be a software module/unit, or a hardware module/unit, or may be a software module/unit partially, or a hardware module/unit partially.

For example, for each device or product applied to or integrated on a chip, each module/unit included in the device or product may be implemented in hardware such as a circuit, or at least part of the modules/units may be implemented in software program, where the software program runs on a processor integrated inside the chip, and the rest (if any) of the modules/units may be implemented in hardware such as a circuit; for each device and product applied to or integrated in the chip module, each module/unit contained in the device and product can be realized in a hardware manner such as a circuit, different modules/units can be located in the same component (such as a chip, a circuit module and the like) or different components of the chip module, or at least part of the modules/units can be realized in a software program, the software program runs on a processor integrated in the chip module, and the rest (if any) of the modules/units can be realized in a hardware manner such as a circuit; for each device, product, or application to or integrated with the terminal, each module/unit included in the device, product, or application may be implemented by using hardware such as a circuit, different modules/units may be located in the same component (for example, a chip, a circuit module, or the like) or different components in the terminal, or at least part of the modules/units may be implemented by using a software program, where the software program runs on a processor integrated inside the terminal, and the remaining (if any) part of the modules/units may be implemented by using hardware such as a circuit.

Embodiments of the present application also provide a computer readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, on which a computer program is stored, which when executed by a processor, performs the steps in the above-described method embodiments.

The side-link transmission method provided by the embodiment of the application can be executed by the following devices: a chip, or a chip module, or a communication device, etc.

The embodiment of the application also provides a side uplink transmission device, which comprises a memory and a processor, wherein the memory stores a computer program capable of running on the processor, and the processor executes the steps in the method embodiments when running the computer program.

Fig. 8 is a schematic hardware structure of an electronic device according to an embodiment of the present application. The electronic device comprises a processor 801, a memory 802 and a transceiver 803.

The processor 801 may be a general purpose central processing unit (central processing unit, CPU), microprocessor, application-specific integrated circuit (ASIC), or one or more integrated circuits for controlling the execution of programs in accordance with aspects of the present application. The processor 801 may also include multiple CPUs, and the processor 801 may be a single-core (single-CPU) processor or a multi-core (multi-CPU) processor. A processor herein may refer to one or more devices, circuits, or processing cores for processing data (e.g., computer program instructions).

The memory 802 may be a ROM or other type of static storage device, a RAM or other type of dynamic storage device that can store static information and instructions, or that can store information and instructions, or an electrically erasable programmable read-only memory (EEPROM), a CD-ROM or other optical disk storage, a compact disk storage (including compact disk, laser disk, optical disk, digital versatile disk, blu-ray disk, etc.), magnetic disk storage media or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer, as the embodiments of the present application are not limited in this regard. The memory 802 may exist alone (in which case the memory 802 may be located outside or within the device) or may be integrated with the processor 801. Wherein the memory 802 may contain computer program code. The processor 801 is configured to execute computer program code stored in the memory 802, thereby implementing the methods provided in the embodiments of the present application.

The processor 801, the memory 802, and the transceiver 803 are connected by a bus. The transceiver 803 is used to communicate with other devices or communication networks. Alternatively, the transceiver 803 may include a transmitter and a receiver. The means for implementing the receiving function in the transceiver 803 may be regarded as a receiver for performing the steps of receiving in the embodiments of the present application. The means for implementing the transmitting function in the transceiver 803 may be regarded as a transmitter for performing the steps of transmitting in the embodiments of the present application.

While the schematic structural diagram shown in fig. 8 is used to illustrate the structure of the terminal device according to the above embodiment, the processor 801 is used to control and manage the actions of the terminal device, for example, the processor 801 is used to support the terminal device to perform some or all of the steps performed by the terminal device in fig. 2 or fig. 3 or fig. 4 or fig. 5, and/or the actions performed by the terminal device in other processes described in the embodiments of the present application. The processor 801 may communicate with other network entities, such as with the network devices described above, through the transceiver 803. The memory 802 is used to store program codes and data for the terminal device. The processor, when running the computer program, may control the transceiver 803 to receive downlink signaling or downlink data.

While the schematic structural diagram shown in fig. 8 is used to illustrate the structure of the network device involved in the above embodiment, the processor 801 is configured to control and manage the actions of the network device, for example, the processor 801 is configured to support the network device to perform some or all of the steps performed by the network device in fig. 2 or fig. 3 or fig. 4 or fig. 5, and/or the actions performed by the network device in other processes described in the embodiments of the present application. The processor 801 may communicate with other network entities, such as with the terminal devices described above, via the transceiver 803. Memory 802 is used to store program codes and data for the network devices. The processor, when running the computer program, may control the transceiver 803 to send downlink data or downlink signaling.

It should be understood that the term "and/or" is merely an association relationship describing the associated object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In this context, the character "/" indicates that the front and rear associated objects are an "or" relationship.

The term "plurality" as used in the embodiments herein refers to two or more.

The first, second, etc. descriptions in the embodiments of the present application are only used for illustrating and distinguishing the description objects, and no order division is used, nor does it indicate that the number of the devices in the embodiments of the present application is particularly limited, and no limitation on the embodiments of the present application should be construed.

Embodiments provided herein may be implemented, in whole or in part, by software, hardware, firmware, or any other combination. 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. When the computer instructions or computer program are loaded or executed on a computer, the processes or functions described in accordance with the embodiments of the present application are all or partially produced. The computer may be a general purpose computer, a special purpose computer, a computer network, or other programmable apparatus. 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 site, computer, server, or data center to another website site, computer, server, or data center by wired or wireless means. It should be understood that, in various embodiments of the present application, the sequence numbers of the foregoing processes do not mean the order of execution, and the order of execution of the processes should be determined by the functions and internal logic thereof, and should not constitute any limitation on 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 manners. For example, the device embodiments described above are merely illustrative; for example, the division of the units is only one logic function division, and other division modes can be adopted in actual implementation; for example, multiple units or components may be combined or may be integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be an indirect coupling or communication connection via some interfaces, devices or units, which may be in electrical, mechanical or other form.

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

In addition, each functional unit in the embodiments of the present invention may be integrated in one processing unit, or each unit may be physically disposed separately, or two or more units may be integrated in one unit. The integrated units may be implemented in hardware or in hardware plus software functional units.

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

Claims

1. A method of side-link transmission, the method comprising:

receiving first side link configuration information, wherein the first side link configuration information is used for configuring transmission parameters of unlicensed frequency bands of a side link;

and communicating on an unlicensed frequency band according to the first side uplink configuration information.

2. The method according to claim 1, wherein the method further comprises:

receiving second side uplink configuration information, wherein the second side uplink configuration information is used for configuring transmission parameters of an authorized frequency band of a side uplink;

and communicating on an authorized frequency band according to the second side uplink configuration information.

3. The method of claim 2, wherein the first side-link configuration information includes information for determining a value of a transmission parameter of the unlicensed band, and wherein the second side-link configuration information includes a value of a transmission parameter of the licensed band, the value of the transmission parameter of the unlicensed band being different from the value of the transmission parameter of the licensed band.

4. A method according to claim 3, wherein the information for determining the value of the transmission parameter of the unlicensed band is the value of the transmission parameter of the unlicensed band; or, the information for determining the value of the transmission parameter of the unlicensed band is a ratio between the value of the transmission parameter of the unlicensed band and the value of the transmission parameter of the licensed band.

5. The method according to any of claims 2-4, the transmission parameters comprising at least one parameter, the value of the first side-link configuration information configuration being greater than the value of the second side-link configuration information configuration for the same one of the at least one parameter.

6. The method according to any of claims 2-5, wherein said communicating on an licensed band according to said second side uplink configuration information comprises:

7. The method according to any of claims 1-6, wherein said communicating on an unlicensed frequency band according to said first side-link configuration information comprises:

And under the condition that the frequency band where the current sending carrier and/or the current receiving carrier is/are an unlicensed frequency band, communicating on the unlicensed frequency band according to the first side uplink configuration information.

8. The method of any of claims 1-7, wherein the transmission parameters include any one or more of: the maximum number of HARQ DTX discontinuous transmission times is requested by the hybrid automatic repeat request and the duration of a timer is used for side uplink management.

9. A method of side-link transmission, the method comprising:

and sending first side link configuration information to the terminal equipment, wherein the first side link configuration information is used for configuring transmission parameters of unlicensed frequency bands of side links.

10. The method according to claim 9, wherein the method further comprises:

and sending second side-link configuration information to the terminal equipment, wherein the second side-link configuration information is used for configuring transmission parameters of an authorized frequency band of a side-link.

11. The method of claim 10, wherein the first side-link configuration information comprises information for determining a value of a transmission parameter of the unlicensed band, and wherein the second side-link configuration information comprises a value of a transmission parameter of the licensed band, the transmission parameter of the unlicensed band and the transmission parameter of the licensed band being different.

12. The method of claim 11, wherein the information for determining the value of the transmission parameter of the unlicensed band is the value of the transmission parameter of the unlicensed band; or, the information for determining the value of the transmission parameter of the unlicensed band is a ratio between the value of the transmission parameter of the unlicensed band and the value of the transmission parameter of the licensed band.

13. The method according to any of claims 10-12, the transmission parameters comprising at least one parameter, the value of the first side-link configuration information configuration being greater than the value of the second side-link configuration information configuration for the same one of the at least one parameter.

14. The method according to any of claims 9-13, wherein the transmission parameters comprise any one or more of: the maximum number of HARQ DTX discontinuous transmission times is requested by the hybrid automatic repeat request and the duration of a timer is used for side uplink management.

15. A side-link transmission apparatus, the apparatus comprising: a first processing module and a first communication module;

16. The apparatus of claim 15, wherein the device comprises a plurality of sensors,

the first processing module is further configured to receive second side uplink configuration information through the first communication module, where the second side uplink configuration information is used to configure transmission parameters of an authorized frequency band of a side uplink;

the first processing module is further configured to communicate on an authorized frequency band through the first communication module according to the second side uplink configuration information.

17. The apparatus of claim 16, wherein the first side-link configuration information comprises information for determining a value of a transmission parameter for the unlicensed band, and wherein the second side-link configuration information comprises a value of a transmission parameter for the licensed band, the value of the transmission parameter for the unlicensed band being different from the value of the transmission parameter for the licensed band.

18. The apparatus of claim 17, wherein the information for determining the value of the transmission parameter of the unlicensed band is the value of the transmission parameter of the unlicensed band; or, the information for determining the value of the transmission parameter of the unlicensed band is a ratio between the value of the transmission parameter of the unlicensed band and the value of the transmission parameter of the licensed band.

19. The apparatus according to any of claims 16-18, the transmission parameters comprising at least one parameter, the value of the first side-link configuration information configuration being greater than the value of the second side-link configuration information configuration for a same one of the at least one parameter.

20. The apparatus according to any one of claims 16-19, wherein the first processing module is specifically configured to:

and under the condition that the frequency band where the current sending carrier and/or the current receiving carrier is/are the authorized frequency band, communicating on the authorized frequency band through the communication module according to the second side uplink configuration information.

21. The apparatus according to any one of claims 15-20, wherein the first processing module is specifically configured to:

and under the condition that the frequency band where the current sending carrier and/or the current receiving carrier is/are an unlicensed frequency band, communicating on the unlicensed frequency band through the communication module according to the first side uplink configuration information.

22. The apparatus of any of claims 15-21, wherein the transmission parameters include any one or more of: the maximum number of HARQ DTX discontinuous transmission times is requested by the hybrid automatic repeat request and the duration of a timer is used for side uplink management.

23. A side-link transmission apparatus, the apparatus comprising: the second processing module and the second communication module;

24. The apparatus of claim 23, wherein the device comprises a plurality of sensors,

the second processing module is further configured to send second side uplink configuration information to the terminal device through the second communication module, where the second side uplink configuration information is used to configure transmission parameters of an authorized frequency band of a side uplink.

25. The apparatus of claim 24, wherein the first side-link configuration information comprises information for determining a value of a transmission parameter for the unlicensed band, and wherein the second side-link configuration information comprises a value of a transmission parameter for the licensed band, the transmission parameter for the unlicensed band and the transmission parameter for the licensed band being different.

26. The apparatus of claim 25, wherein the information for determining the value of the transmission parameter of the unlicensed band is the value of the transmission parameter of the unlicensed band; or, the information for determining the value of the transmission parameter of the unlicensed band is a ratio between the value of the transmission parameter of the unlicensed band and the value of the transmission parameter of the licensed band.

27. The apparatus according to any of claims 24-26, the transmission parameter comprising at least one parameter, the value of the first side-link configuration information configuration being greater than the value of the second side-link configuration information configuration for a same one of the at least one parameter.

28. The apparatus of any one of claims 23-27, wherein the transmission parameters include any one or more of: the maximum number of HARQ DTX discontinuous transmission times is requested by the hybrid automatic repeat request and the duration of a timer is used for side uplink management.

29. A terminal device comprising a side-link transmission arrangement according to any of claims 15-22.

30. A network device comprising a side-link transmission arrangement according to any of claims 23-28.

31. A computer readable storage medium, being a non-volatile storage medium or a non-transitory storage medium, having stored thereon a computer program, characterized in that the computer program, when run by a processor, causes the method of any of claims 1 to 8 to be performed or causes the method of any of claims 9 to 14 to be performed.

32. A side-link transmission device comprising a memory and a processor, the memory having stored thereon a computer program executable on the processor, characterized in that the processor executes the method according to any of claims 1 to 8 or the method according to any of claims 9 to 14 when the computer program is executed by the processor.