CN115549876A - Resource determination method and related device - Google Patents

Abstract

The embodiment of the application discloses a resource determination method and a related device. The resource determining method comprises the following steps: and when the first terminal equipment sends the first feedback information to the network equipment, starting a timer, and if the timer is overtime, the first terminal equipment selects retransmission resources of the first data from resources configured by the network equipment or a pre-configured resource pool. The first feedback information is used for feeding back the failure of the first terminal device to transmit the first data to the second terminal device. Therefore, if the timer is overtime, the first terminal device selects the retransmission resource of the first data from the resource configured by the network device or the pre-configured resource pool, and does not continue to wait for the network device to configure the retransmission resource of the first data, thereby being beneficial to improving the efficiency of data transmission.

Description

Resource determination method and related device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a resource determination method and a related apparatus.

Background

Currently, a resource allocation scheme on the Sidelink (SL) includes mode 1. In mode1, a base station allocates a transmission resource to terminal apparatus 1, and terminal apparatus 1 transmits data to terminal apparatus 2 using the transmission resource allocated by the base station. Then, the terminal device 1 receives feedback information from the terminal device 2, the feedback information being used to indicate whether the terminal device 2 has successfully received the data. For example, an Acknowledgement (ACK) indicates that the reception was successful; a Negative Acknowledgement (NACK) indicates that reception was not successful. If terminal device 1 receives the NACK, terminal device 1 considers that the data needs to be retransmitted, and may feed back the NACK to the base station. After receiving the NACK, the base station knows the resource requested by terminal device 1 for data retransmission, and then the base station allocates retransmission resource to terminal device 1.

However, when the resource occupied by the link between the base station and the terminal device 1 is located on the unlicensed frequency band, the terminal device 1 sends NACK to the base station to request the base station to allocate the resource for data retransmission, but the base station also needs to monitor and compete for the resource to obtain the resource for data retransmission, so that the base station may not be able to provide the retransmission resource to the terminal device 1. Then, how to retransmit the data by the terminal device 1 at this time is one of the problems that needs to be solved at present.

Disclosure of Invention

The embodiment of the application provides a resource determining method and a related device, which can improve the data transmission efficiency.

In a first aspect, an embodiment of the present application provides a resource determination method, where the method includes: and when the first terminal equipment sends the first feedback information to the network equipment, starting a timer, and if the timer is overtime, the first terminal equipment selects retransmission resources of the first data from resources configured by the network equipment or a pre-configured resource pool. The first feedback information is used for feeding back that the first terminal equipment fails to transmit the first data to the second terminal equipment.

Therefore, if the timer is overtime, the first terminal device selects the retransmission resource of the first data from the resource configured by the network device or the pre-configured resource pool, and does not continue to wait for the network device to configure the retransmission resource of the first data, thereby being beneficial to improving the efficiency of data transmission.

In an optional implementation manner, the resource occupied by the link between the network device and the first terminal device is located on the unlicensed frequency band. That is, the network device and the first terminal device communicate with each other by using resources on the unlicensed frequency band. In this case, when the network device schedules the transmission resource for the first terminal device, it needs to monitor the resource on the unauthorized frequency band, and only when the idle resource is monitored on the unauthorized frequency band, the transmission resource can be scheduled for the first terminal device.

In an optional implementation manner, the resource configured by the network device is a semi-static resource, and the retransmission resource of the first data is a resource configured by the network device. Therefore, when the network device configures the semi-static resource for the first terminal device to transmit the first data and the first terminal device feeds back the unsuccessfully transmitted first data to the network device, if the timer is overtime, the first terminal device directly retransmits the first data by using the semi-static resource configured before the network device, and does not continue to wait for the network device to configure the retransmission resource of the first data, so that the efficiency of the first terminal device for transmitting data is improved.

In another optional implementation manner, the N consecutive retransmission resources of the first data are selected from the resource pool, the N +1 retransmission resources and the subsequent retransmission resources of the first data are resources configured by the network device, and N is a non-negative integer. It can be seen that, after the first data is failed to be initially transmitted, the retransmission resource when the first data is retransmitted for the subsequent N times is selected from the resource pool, and the retransmission resource when the first data is retransmitted for the subsequent N +1 times and the retransmission resource when the first data is retransmitted for the subsequent N times are configured resources of the network device.

That is to say, when the first terminal device retransmits the first data for the first N times, the first terminal device selects the retransmission resource in the resource pool by monitoring, competing and other manners, and retransmits the first data by using the selected retransmission resource; and when the first terminal equipment retransmits the first data for the (N + 1) th time and subsequently, the first data is retransmitted by adopting the resource configured by the network equipment during the initial transmission of the first data. The method not only enables the first terminal device to retransmit the first data in time, but also enables the first terminal device to retransmit the first data by adopting the resources configured by the network device after a period of time, thereby further improving the efficiency of the first terminal device for transmitting data.

In yet another alternative embodiment, the retransmission resource for the first data is selected from a resource pool. That is, as long as the first data transmission fails and the timer is overtime, the first terminal device selects the retransmission resource of the first data from the resource pool when retransmitting the first data subsequently, so as to improve the efficiency of the first terminal device in transmitting data.

In yet another alternative embodiment, the retransmission resource of the first data is selected from a resource pool, the initial transmission and retransmission resources of M consecutive second data following the first data are selected from the resource pool, the initial transmission resource and the retransmission resource of the M +1 th second data and the subsequent second data are resources configured by the network device, and M is a positive integer.

As can be seen, the first terminal device selects retransmission resources of the first data from the resource pool, and selects initial transmission resources and retransmission resources of each second data from the resource pool when transmitting subsequent M consecutive second data after transmitting the first data. However, when the first terminal device transmits the M +1 th second data and the subsequent second data, the mth second data and the subsequent second data are transmitted by using the resource configured by the network device. The resource configured by the network device may be a semi-static resource configured by the network device, or may be a dynamic resource allocated to the first terminal device after the network device monitors an idle resource in an unlicensed frequency band, and the first terminal device requests the network device to transmit the resource when the first terminal device transmits the M +1 th second data and subsequent second data.

This is because the first terminal device does not obtain the retransmission resource of the first data configured by the network device during the period when the first data needs to be retransmitted and the timer times, and then the first terminal device may consider that the network device does not monitor the idle resource in the unlicensed frequency band, and cannot configure the transmission resource for the first terminal device. Therefore, in order to ensure timely transmission of the subsequent M consecutive second data, the first terminal device directly selects the transmission resources of the M consecutive second data from the resource pool, so as to ensure that the M consecutive second data are transmitted in time. After a period of time, the network device may monitor an idle resource on an unauthorized frequency band, and may configure a transmission resource for the first terminal device, so that when the first terminal device transmits the M +1 th second data and subsequent second data, the resource configured by the network device is used for transmission, and the transmission resource is no longer continuously selected from the resource pool, thereby shortening the time for determining the transmission resource, and facilitating improvement of data transmission efficiency.

In yet another alternative embodiment, the retransmission resource of the first data is selected from a resource pool, and the initial transmission and retransmission resources of the second data following the first data are selected from the resource pool.

It can be seen that, the first terminal device selects a retransmission resource of the first data from the resource pool, and determines an initial transmission resource and a retransmission resource of each second data from the resource pool when transmitting each second data after transmitting the first data.

This is because the first terminal device does not obtain the retransmission resource configured by the network device during the period when the first terminal device needs to retransmit the first data and the timer times, and then the first terminal device may consider that the network device does not monitor the idle resource in the unlicensed frequency band, and cannot configure the transmission resource for the first terminal device. Therefore, in order to ensure timely transmission of each subsequent second data, the first terminal device directly selects the initial transmission resource and the retransmission resource of each second data from the resource pool instead of requesting the initial transmission resource and the retransmission resource of each second data from the network device, thereby being beneficial to improving the efficiency of the first terminal device in transmitting data.

In yet another alternative embodiment, the retransmission resource of the first data is selected from a resource pool, the initial transmission resource and P retransmission resources of the second data subsequent to the first data are selected from resources configured by the network device, the P +1 times retransmission resource and the subsequent retransmission resource of the second data are selected from the resource pool, and P is a positive integer.

It can be seen that, after the first terminal device retransmits the first data by using the resource selected in the resource pool, when each second data is transmitted, the resource configured by the network device is first used to perform initial transmission and P retransmissions of each second data, and after the P-th retransmission of the second data, the configured resource is used up in the period corresponding to the resource that may be configured, so that when the first terminal device performs the P + 1-th retransmission and subsequent retransmission of the second data, each second data is retransmitted by using the selected resource in the resource pool.

In yet another alternative embodiment, the retransmission resource of the first data is selected from a resource pool, the initial transmission resource and P retransmission resources of M second data following the first data are selected from resources configured by the network device, the P +1 times retransmission resource and the subsequent retransmission resource of the M second data are selected from the resource pool, the initial transmission resource and the retransmission resource of the M +1 th second data and the following second data are configured by the network device, and M and P are positive integers.

Different from the above, after the first terminal device finishes transmitting the mth second data, the network device may monitor the idle resource in the unlicensed frequency band, and may schedule the transmission resource for the first terminal device. Therefore, when the first terminal device initially transmits and retransmits the (M + 1) th second data and the following second data, the adopted resources are the resources configured by the network device. The resource configured by the network device is a semi-static resource configured by the network device, or a dynamic resource requested by the first terminal device to the network device when the M +1 th second data and the following second data are transmitted to the network device. The method can reduce the time for determining the transmission resource, thereby improving the efficiency of data transmission.

In an optional implementation manner, the second data is data after the first data to be transmitted from the first terminal device to the second terminal device. That is, the second data generally refers to data that needs to be transmitted to the second terminal after the first terminal device transmits the first data to the second terminal device.

In an alternative embodiment, the first terminal device retransmits the first data or the second data by using the resource selected from the resource pool, where the number of times of retransmitting the first data is equal to the number of times of retransmitting the first data by using the resource configured by the network device subtracted from the number of times of retransmitting the resource selected from the resource pool.

In an optional implementation manner, when the first terminal device transmits the mth second data by using the resource in the resource pool, the reservation period in the sidelink control information SCI is set to 0.

In an optional implementation manner, the resource configured by the network device is a semi-static resource or a dynamic resource.

In an optional implementation manner, when receiving retransmission resources of the first data from the network device, or receiving the first indication information from the network device, the first terminal device stops timing of the timer; the first indication information is used for indicating the first terminal equipment to stop the retransmission of the first data.

In a second aspect, an embodiment of the present application provides a resource determining apparatus, where the resource determining apparatus includes:

the processing unit is used for starting the timer when the first feedback information is sent to the network equipment; the first feedback information is used for feeding back that the first terminal equipment fails to transmit the first data to the second terminal equipment;

and the processing unit is further configured to select a retransmission resource of the first data from a resource configured by the network device or a pre-configured resource pool if the timer is overtime.

In addition, in this aspect, reference may be made to the related matters of the first aspect for further alternative embodiments of the data transmission device, and details are not described here.

In a third aspect, an embodiment of the present application provides a terminal device, where the terminal device includes:

a memory for storing a computer program;

a processor invoking a computer program for performing the following operations:

when the first feedback information is sent to the network equipment, a timer is started; the first feedback information is used for feeding back the failure of the first terminal equipment in transmitting the first data to the second terminal equipment;

and if the timer is overtime, selecting retransmission resources of the first data from the resources configured by the network equipment or a pre-configured resource pool.

In addition, in this aspect, for other alternative embodiments of the terminal device, reference may be made to the related contents of the first aspect, and details are not described here.

In a fourth aspect, an embodiment of the present application provides a chip, where the chip is configured to: when the first feedback information is sent to the network equipment, starting a timer; the first feedback information is used for feeding back the failure of the first terminal equipment in transmitting the first data to the second terminal equipment; and if the timer is overtime, selecting retransmission resources of the first data from the resources configured by the network equipment or a pre-configured resource pool.

In addition, in this aspect, reference may be made to the related contents of the first aspect for other alternative implementations of the chip, and details are not described here.

In a fifth aspect, an embodiment of the present application provides a module device, where the module device includes a processor and a communication interface, where the processor is connected to the communication interface, the communication interface is used to send and receive signals, and the processor is used to: when the first feedback information is sent to the network equipment, starting a timer; the first feedback information is used for feeding back the failure of the first terminal equipment in transmitting the first data to the second terminal equipment; and if the timer is overtime, selecting retransmission resources of the first data from the resources configured by the network equipment or a pre-configured resource pool.

In addition, in this aspect, reference may be made to the related contents of the first aspect for other alternative embodiments of the module device, and details are not described here.

In a sixth aspect, an embodiment of the present application provides a computer-readable storage medium for storing computer software instructions for the terminal, which includes a program for executing the method according to any one of the first aspect.

Drawings

Fig. 1 is a schematic system structure diagram of a communication system according to an embodiment of the present application;

fig. 2 is a schematic flowchart of a resource determining method according to an embodiment of the present application;

fig. 3 is a schematic diagram of determining first data and second data transmission resources according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of a resource determining apparatus according to an embodiment of the present application;

fig. 5 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

Detailed Description

The embodiments of the present application will be described below with reference to the drawings.

The communication system related to the embodiment of the present application is shown in fig. 1, and the communication system may include, but is not limited to, one network device and two terminal devices, the number and the form of the devices shown in fig. 1 are used for example and do not constitute a limitation to the embodiment of the present application, and in practical applications, the communication system may include more than one network device and more than two terminal devices. The communication system shown in fig. 1 is illustrated by taking a network device 101, a terminal device 1021 and a terminal device 1022 as an example, the network device 101 can provide network services to the terminal device 1021 and the terminal device 1022, and communication can be performed between the terminal device 1021 and the terminal device 1022.

The terminal device in this embodiment may also be referred to as a terminal, and may refer to various forms of 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 also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a fifth generation mobile communication (5 g) network or a terminal device in a future evolution public land mobile communication network (PLMN), and the like, which is not limited in this embodiment of the present application.

The network device in the embodiment of the present application includes a base station and a base station controller of an access network, and may further include a terminal device.

A Base Station (BS) in the embodiment of the present application, which may also be referred to as a base station device, is a device deployed in a Radio Access Network (RAN) to provide a wireless communication function. For example, an apparatus for providing a base station function in a second generation mobile communication (2g) network includes a Base Transceiver Station (BTS). An apparatus for providing a base station function in a third generation mobile communication (3 g) network includes a node B (NodeB). An apparatus providing a base station function in a fourth generation mobile communication (4 g) network includes an evolved node B (eNB). In a Wireless Local Area Network (WLAN), a device providing a base station function is an Access Point (AP). The system comprises a device gNB providing a base station function in a New Radio (NR) of 5G and a node B (ng-eNB) continuing to evolve, wherein the gNB communicates with a terminal device by adopting NR technology, the ng-eNB communicates with the terminal device by adopting evolved universal terrestrial Radio access (E-UTRA) technology, and both the gNB and the ng-eNB can be connected to a 5G core network. The base station in the embodiment of the present application also includes an apparatus and the like for providing a function of the base station in a future new communication system.

The base station controller in the embodiment of the present application, which may also be referred to as a base station controller device, is a device for managing a base station. For example, a Base Station Controller (BSC) in a 2G network, a Radio Network Controller (RNC) in a 3G network, and an apparatus for controlling and managing a base station in a future new communication system.

The present invention is applicable to a 5G communication system, a 4G communication system, a 3G communication system, and various future new communication systems, for example, a sixth Generation mobile communication (6G), a seventh Generation mobile communication (7G), and the like, and the embodiments of the present invention are not limited thereto.

The present application is also applicable to different network architectures including, but not limited to, a relay network architecture, a dual link architecture, a vehicle-to-evolution (V2X) architecture, a Device-to-Device (D2D) architecture, etc.

As shown in fig. 1, in the cellular network communication technology, a link between a terminal device and a base station is called an Uplink (UL) or a Downlink (DL), and an interface is called a Uu interface. In the Sidelink (SL) communication technology, the terminal device 1021 can communicate with the terminal device 1022, the link between the terminal device 1021 and the terminal device 1022 is called Sidelink (SL), and the interface is called a PC5 interface.

Currently, the resource allocation scheme on SL includes mode1 (mode 1) and mode 2 (mode 2). The resource allocation manner of mode1 allocates transmission resources to the terminal device for the network device. In mode1, the network device 101 allocates transmission resources to the terminal device 1021, the terminal device 1021 transmits data to the terminal device 1022 using the transmission resource allocated by the network device 101. Then, the terminal device 1021 receives feedback information from the terminal device 1022, the feedback information indicating whether the terminal device 1022 successfully receives the data. For example, the feedback information is an Acknowledgement (ACK), which indicates that the terminal device 1022 successfully receives the data transmitted by the terminal device 1021; the feedback information is a Negative Acknowledgement (NACK), which indicates that the terminal equipment 1022 has not successfully received the data transmitted by the terminal equipment 1021. When the terminal device 1021 receives the NACK, the terminal device 1021 considers that the data transmission to the terminal device 1022 is failed and needs to retransmit the data, so the terminal device 1021 feeds back the NACK to the network device to request retransmission resources of the data. After receiving the NACK, the network device 101 knows that the terminal device 1021 requests a resource for data retransmission, and then the network device allocates a retransmission resource for the data to the terminal device 1021.

The resource allocation mode of mode 2 is that the terminal device autonomously selects resources for transmitting data from a configured resource pool in a perceptual manner, where the resource pool may be configured by a network, or may be preconfigured by an internet protocol or other organizations. If the terminal equipment fails to transmit the data, namely the terminal equipment considers that the data needs to be retransmitted, the terminal equipment selects resources for retransmitting the data from the resource pool by itself. In this way, different terminal devices may select transmission resources in the resource pool by monitoring and the like, so as to avoid the selected resources from colliding.

However, when the resource occupied by the link between the network device 101 and the terminal device 1021 is located in the unlicensed frequency band, the terminal device 1021 sends NACK to the network device 101, and when the network device 101 is requested to allocate a resource for data retransmission, the network device also needs to monitor and compete for the unlicensed frequency band, and only when an idle resource is monitored in the unlicensed frequency band, the network device 1021 can be configured with a retransmission resource, so that the network device may not be able to provide the retransmission resource for the terminal device 1021. Then, how to retransmit the data by the terminal device 1021 at this time is one of the problems that needs to be solved at present.

In this embodiment, the first terminal device is a device that communicates with the network device, and the second terminal device is a device that directly communicates with the first terminal device.

The embodiment of the application provides a resource determination method 100. In the resource determining method 100, when the first terminal device sends the first feedback information to the network device, a timer is started, and if the timer is overtime, the first terminal device selects a retransmission resource of the first data from a resource configured by the network device or a pre-configured resource pool. The first feedback information is used for feeding back the failure of the first terminal device to transmit the first data to the second terminal device. Therefore, if the timer is overtime, the first terminal device selects the retransmission resource of the first data from the resource configured by the network device or the pre-configured resource pool, and does not continue to wait for the network device to configure the retransmission resource of the first data, thereby being beneficial to improving the efficiency of data transmission.

Based on the above description, an embodiment of the present application proposes a resource determination method 100 as shown in fig. 2, where the resource determination method 100 may include S201-S202:

s201: when the first terminal equipment sends the first feedback information to the network equipment, a timer is started, and the first feedback information is used for feeding back that the first terminal equipment fails to transmit the first data to the second terminal equipment.

Wherein the first feedback information may be a non-acknowledgement NACK. The NACK is information fed back to the first terminal device when the second terminal device has not successfully received the first data from the first terminal device. When the first terminal device receives the NACK from the second terminal device, it may know that the second terminal device has not successfully received the first data, and the first terminal device forwards the NACK to the network device, so that the network device knows that the first terminal device has failed to transmit the first data, and the network device needs to configure retransmission resources of the first data to the first terminal device.

When the first terminal device sends the first feedback information to the network device, the timer is started, which means that the first terminal device feeds the first feedback information back to the network device, and when the information that the network device fails to receive the feedback information is not received from the physical layer, the timer is started. That is, the first terminal device starts the timer when the first feedback information is successfully transmitted to the network device. The timer is used for the first terminal device to judge whether retransmission resources of the first data configured by the network device are received within a preset time. The duration of the timer may be predefined by the network device and the first terminal device, or may be self-defined by the first terminal device, which is not limited in this embodiment of the present application.

In an optional implementation manner, the resource occupied by the link between the network device and the first terminal device is located on the unlicensed frequency band. When the resource occupied by the link between the network device and the first terminal device is located on the unauthorized frequency band, if the first terminal device requests the network device for the retransmission resource of the first data, the network device needs to monitor the resource on the unauthorized frequency band, and only when the idle resource is monitored on the unauthorized frequency band, the retransmission resource of the first data can be configured for the first terminal device. The network device may not be able to configure retransmission resources for the first data for the first terminal device within a predetermined time. Therefore, when the first terminal device sends the first feedback information to the network device, the timer is started, and whether the network device configures retransmission resources of the first data for the first terminal device during the time period of the timer can be monitored through the timing of the timer.

S202: and if the timer is overtime, the first terminal equipment selects retransmission resources of the first data from the resources configured by the network equipment or a pre-configured resource pool.

It is understood that the expiration of the timer means that the network device does not successfully configure the first terminal device with retransmission resources of the first data during the timer. It may be that the resource occupied by the link between the network device and the first terminal device is located on the unlicensed frequency band, and the network device does not monitor the idle resource from the unlicensed frequency band, so that the first terminal device cannot be configured with the retransmission resource of the first data.

Therefore, the first terminal device does not continue to wait for the network device to configure the retransmission resource of the first data, but selects the retransmission resource of the first data from the resource configured by the network device or the pre-configured resource pool by itself, so as to ensure the timely retransmission of the first data, thereby improving the efficiency of data transmission.

The following describes, when the resources configured by the network device are different, an embodiment in which the first terminal device selects the retransmission resource of the first data from the resources configured by the network device or the preconfigured resource pool if the timer is overtime:

1. the resources configured by the network device are semi-static resources.

It can be understood that the resource configured by the network device to the first terminal device is a semi-static resource, that is, the resource used when the first terminal device sends the first data to the second terminal device is a semi-static resource. The semi-static resource is a resource for which a granted grant (configured grant) is configured.

1.1, the retransmission resource of the first data is a resource configured by the network device.

It can be understood that the resource configured by the network device for the first terminal device to transmit the first data is a semi-static resource, and if the timer is overtime, the first terminal device determines that the retransmission resource of the first data is still the semi-static resource configured by the network device for the first terminal device. Therefore, the first terminal device retransmits the first data by using the resource configured by the network device, that is, the first data is retransmitted to the second terminal device by using the resource of the configured grant on the SL, so as to implement retransmission of the first data.

In this way, if the timer is overtime, the first terminal device does not continue to wait for the network device to configure the retransmission resource of the first data for itself, but directly retransmits the first data by using the semi-static resource configured by the previous network device, so that the timely retransmission of the first data can be realized, and the efficiency of the first terminal device in transmitting data can be improved.

In an optional implementation manner, when the first terminal device fails to retransmit the first data for the first time and then retransmits the first data to the second terminal device for multiple times, the semi-static resource configured by the network device is still used to retransmit the first data to the second terminal device, so as to ensure the timely retransmission of the first data.

In another optional implementation manner, when the first terminal device fails to retransmit the first data for the first time and then retransmits the first data subsequently, the first terminal device sends the first feedback information to the network device, starts a timer, and if the timer is overtime, the first terminal device performs the step of S202. That is to say, after the first data retransmission fails, the first terminal device may monitor idle resources on the unauthorized frequency band, and may configure the first data retransmission resources for the first terminal device, so that when the first terminal device retransmits the first data again, the first terminal device may request the network device for the first data retransmission resources. The first terminal device may receive the retransmission resource configured by the network device during the timer. If the first terminal device does not receive the retransmission resource configured by the network device before the timer expires, the first terminal device executes the step S202 to ensure that the first data is retransmitted in time.

1.2, the N successive retransmission resources of the first data are selected from the resource pool, the N +1 retransmission resources and the subsequent retransmission resources of the first data are resources configured by the network device, and N is a non-negative integer.

Understandably, when the first terminal equipment retransmits the first data for the previous N times, the first terminal equipment selects retransmission resources in a resource pool through modes of monitoring, competition and the like, and retransmits the first data by adopting the selected retransmission resources; when the first terminal device retransmits the first data for the (N + 1) th time and subsequently, the first terminal device adopts the network device to configure resources, wherein the resources configured by the network device can be resources configured by the network device for the terminal device and used for initially transmitting the first data, and the resources are semi-static resources; or, the resource configured by the network device may be a dynamic resource allocated to the first terminal device when the first terminal device requests to retransmit the resource when retransmitting the first data for the (N + 1) th time and subsequently, and after the network device monitors the idle resource on the unlicensed frequency band, the network device may retransmit the first data. The value of N may be predefined by the network device and the first terminal device, or may be determined by the first terminal device, which is not limited in this embodiment of the present application.

That is, the resource determination mode when the first terminal device retransmits the first data N times is switched from the resource determination mode (mode 1) when the first data is initially transmitted to mode 2, and the resource determination mode when the first terminal device retransmits the first data N +1 times and thereafter retransmits the first data is switched from mode 2 back to mode 1. The method not only enables the first terminal device to retransmit the first data in time, but also enables the first terminal device to retransmit the first data by adopting the resources configured by the network device after a period of time, thereby further improving the efficiency of the first terminal device for transmitting data.

1.3, the retransmission resource for the first data is selected from a resource pool.

It can be understood that, as long as the first data initial transmission fails and the timer is overtime, the first terminal device selects the retransmission resource of the first data from the resource pool when retransmitting the first data subsequently, and the efficiency of the first terminal device in transmitting data can also be improved.

1.4, the retransmission resource of the first data is selected from the resource pool, the initial transmission and retransmission resources of M consecutive second data following the first data are selected from the resource pool, the M +1 th second data and the initial transmission resource and retransmission resource of the subsequent second data are resources configured by the network device, and M is a positive integer.

The value of M may be predefined by the network device and the first terminal device, or may be determined by the first terminal device itself, which is not limited in this embodiment of the present application.

It can be understood that, as can be seen, the first terminal device selects a retransmission resource of the first data from the resource pool, and when M consecutive second data are transmitted after the first data are transmitted, also selects an initial transmission resource and a retransmission resource of each second data from the resource pool. However, when the first terminal device transmits the M +1 th second data and the subsequent second data, the resource configured by the network device is used to transmit the M-th second data and the subsequent second data, the resource configured by the network device may be a semi-static resource configured by the network device, or a dynamic resource allocated to the first terminal device after the network device monitors the idle resource in the unlicensed frequency band by requesting the network device to transmit the resource when the first terminal device transmits the M +1 th second data and the subsequent second data.

That is, the resource determination method when the first terminal device retransmits the first data is changed from the resource determination method (mode 1) when the first data is initially transmitted to mode 2, the initial transmission resources and the retransmission resources of M consecutive second data are also determined in the mode 2, and the determination methods of the initial transmission resources and the retransmission resources of the M +1 th second data and the following second data are returned to the mode1 from mode 2.

The second data is data except the first data in the data to be transmitted from the first terminal equipment to the second terminal equipment. That is, the second data is new data that needs to be transmitted to the second terminal device after the first terminal device transmits the first data.

In this embodiment, since the first terminal device does not obtain the retransmission resource of the first data during the period when the first data needs to be retransmitted and the timer times, the first terminal device may consider that the network device does not monitor the idle resource in the unlicensed frequency band, and may not configure the transmission resource for the first terminal device. Therefore, in order to ensure timely transmission of the subsequent M consecutive second data, the first terminal device directly selects the transmission resources of the M consecutive second data from the resource pool, so as to ensure that the M consecutive second data are transmitted in time. After a period of time, the network device may monitor an idle resource on an unauthorized frequency band, and may configure a transmission resource for the first terminal device, so that when the first terminal device transmits the M +1 th second data and subsequent second data, the resource configured by the network device is used for transmission, and the transmission resource is no longer continuously selected from the resource pool, thereby shortening the time for determining the transmission resource, and facilitating improvement of data transmission efficiency.

1.5, the retransmission resource of the first data is selected from the resource pool, and the initial transmission and retransmission resources of the second data after the first data are selected from the resource pool.

It can be seen that, the first terminal device selects a retransmission resource of the first data from the resource pool, and determines an initial transmission resource and a retransmission resource of each second data from the resource pool when transmitting each second data after transmitting the first data.

That is, the first terminal device determines the retransmission resource of the first data, and the initial transmission resource and the retransmission resource of the plurality of second data following the first data, and all of the modes are switched from the mode1 mode in which the initial transmission resource of the first data is determined to the mode 2 mode.

This is because the first terminal device does not obtain the retransmission resource configured by the network device during the period when the first terminal device needs to retransmit the first data and the timer times, and then the first terminal device may consider that the network device does not monitor the idle resource in the unlicensed frequency band, and cannot configure the transmission resource for the first terminal device. Therefore, in order to ensure the timely transmission of each subsequent second data, the first terminal device directly selects the initial transmission resource and the retransmission resource of each second data from the resource pool instead of requesting the initial transmission resource and the retransmission resource of each second data from the network device, thereby being beneficial to improving the efficiency of the first terminal device in transmitting data.

1.6, the retransmission resource of the first data is selected from the resource pool, the initial transmission resource and P retransmission resources of the second data following the first data are selected from the resources configured by the network device, the P +1 times retransmission resource and the subsequent retransmission resource of the second data are selected from the resource pool, and P is a positive integer.

Understandably, the first terminal device is a retransmission resource that selects the first data from the resource pool. The first transmission resource and the P retransmission resources of the M second data after the first data are selected from the resources configured by the network device, which means that when the first terminal device transmits the M second data after transmitting the first data, the first transmission resource and the P retransmission resources of each second data are selected from the resources configured by the network device. The P +1 times retransmission resource and the subsequent retransmission resource of the M second data are selected from the resource pool, which means that the P +1 times retransmission resource and all subsequent retransmission resources of each second data in the M second data are selected from the resource pool.

That is, the first terminal device determines that the retransmission resource of the first data is changed from the mode1 mode in which the initial transmission resource of the first data is determined to the mode 2 mode. In addition, when the first terminal device subsequently transmits second data after the first data, the resource configured by the network device is directly used for initial transmission and retransmission of the second data, and when the resource configured by the network device is used up, the determination mode of the retransmission resource of the second data is changed into a mode 2 mode.

This is because the resource configured by the network device is a periodic semi-static resource, and when the first terminal device performs initial transmission and retransmission of each of the M second data by using the resource configured by the network device, and P times of second data may be retransmitted, the resource configured by the network device in the period is used up, but the first terminal device still needs to retransmit the second data, so that the P +1 th retransmission resource and subsequent retransmission resources of the second data may be resources selected from the resource pool.

For example, as shown in fig. 3, T is a period of the resource configured by the network device, and the resource configured by the network device exists at intervals of the period of T, where the resource configured by the network device includes a resource a, a resource b, and a resource c. The first terminal equipment firstly adopts the resources in the resources a to send first data to the second terminal equipment, when the resources in the resources a are used up and the first terminal equipment still does not successfully transmit the first data, a timer is started, and if the timer is overtime, the first terminal equipment adopts the resources selected from the resource pool to carry out repeated retransmission of the first data within a-b time in T.

After the first terminal device retransmits the first data successfully, the first transmission and retransmission of the second data #1 are performed in the preconfigured resource b, and after the second data #1 is retransmitted for P times, the resource configured by the network device is used up, but the first terminal device still needs to retransmit the second data #1, so that the first terminal device performs the retransmission of the second data #1 for P +1 times and the subsequent retransmission of the second data #1 by using the resource selected from the resource pool within c-d time in T.

After the first terminal device successfully transmits the second data #1, the first transmission and retransmission of the second data #2 are performed in the preconfigured resource c, and after the second data #2 is retransmitted for P times, the resource configured by the network device is used up, but the first terminal device still needs to retransmit the second data #2, so that the first terminal device performs the P +1 th retransmission of the second data #2 and the subsequent retransmission of the second data #2 by using the resource selected from the resource pool within e-f time in T.

When the first terminal device subsequently transmits other second data, the above-mentioned manner of transmitting the second data #1 and the second data #2 is still adopted to transmit other second data, which is not described again.

1.7, retransmission resources of the first data are selected from a resource pool, initial transmission resources and P retransmission resources of M second data subsequent to the first data are selected from resources configured by the network device, P +1 times retransmission resources and subsequent retransmission resources of the M second data are selected from the resource pool, initial transmission resources and retransmission resources of the M +1 th second data and subsequent second data are configured by the network device, and M and P are positive integers.

The difference between this embodiment and the above 1.5 is that after the first terminal device finishes transmitting the mth second data, the network device may monitor the idle resource in the unlicensed frequency band, and may schedule the transmission resource for the first terminal device. Therefore, when the first terminal device initially transmits and retransmits the (M + 1) th second data and the following second data, the adopted resources are the resources configured by the network device. The resource configured by the network device is a semi-static resource configured by the network device, or is requested by the first terminal device to the network device when the M +1 th second data and the following second data are transmitted to the network device. The method can reduce the time for determining the transmission resources, thereby improving the efficiency of data transmission.

It can be seen that the resources configured for the network device are semi-static resources, and if the timer is overtime, the first terminal device can flexibly select and determine the mode of retransmitting the first data, so that the retransmission of the first data does not need to continue to wait for the network device to configure the retransmission resources, thereby being beneficial to improving the success rate of the first terminal device for transmitting the first data and the efficiency of transmitting the data.

In this embodiment, the first terminal device retransmits the first data or the second data by using the resource selected from the resource pool, where the number of times of retransmitting the first data or the second data is equal to the number of times of retransmitting the resource configured by the network device subtracted from the number of times of retransmitting the resource selected from the resource pool.

That is, when the terminal device determines the retransmission resource from mode1 to mode 2, and selects the retransmission resource of the first data in the resource pool, a number of times of retransmitting the first data is also selected, but the number of times when the terminal device retransmits the first data using the resource determined from the resource pool is the number of times of retransmission selected minus the number of times the terminal device has retransmitted the first data using the mode1 resource.

In addition, the first terminal device sets a reservation period in Sidelink Control Information (SCI) to 0 when transmitting mth second data using resources in the resource pool. This is because after the first terminal device transmits the mth second data by using the resource in the resource pool, the first terminal device requests the network device for the resource for transmitting the M +1 th second data and the subsequent second data, that is, the first terminal device does not determine the retransmission resource from the resource pool any more when transmitting the M +1 th second data and the subsequent second data. Therefore, the first terminal device sets the reservation period in the SCI to 0 when transmitting the mth second data using the resources in the resource pool.

2. The resources configured by the network device are dynamic resources.

It can be understood that the resource configured by the network device to the first terminal device is a dynamic resource, that is, the resource used when the first terminal device sends the first data to the second terminal device is a dynamic resource. The dynamic resource is scheduled to the first terminal device by the network device through Downlink Control Information (DCI), and is a resource used once.

In an optional implementation manner, when the resource configured by the network device is a dynamic resource, if the timer is overtime, the first terminal device selects a retransmission resource of the first data from the resource configured by the network device or a preconfigured resource pool, which is referred to above 1.2, 1.3, 1.4, and 1.5, and details are not described here.

In this embodiment of the application, when receiving retransmission resources scheduled by the network device or indication information sent by the first terminal device and used for indicating that the first terminal device does not perform retransmission of the first data any more, the first terminal device stops timing of the timer. The first terminal device receiving the retransmission resource scheduled by the network device refers to that the first terminal device receives DCI retransmission scheduling of a hybrid automatic repeat request (HARQ) process for first data from the network device, where the DCI schedules the retransmission resource of the first data.

That is to say, the first terminal device stops the timing of the timer when receiving the retransmission resource scheduled by the network device, and retransmits the first data by using the retransmission resource; or when the first terminal device receives the indication information for indicating that the first terminal device does not retransmit the first data any more, the first terminal device stops the timer in time and does not retransmit the first data any more.

Referring to fig. 4, fig. 4 is a schematic structural diagram of a resource determining apparatus according to an embodiment of the present invention, where the resource determining apparatus is used in a first terminal device. The resource determining apparatus 400 may include:

a processing unit 401, configured to start a timer when the first feedback information is sent to the network device; the first feedback information is used for feeding back the failure of the first terminal equipment in transmitting the first data to the second terminal equipment;

the processing unit 401 is further configured to select a retransmission resource of the first data from a resource configured by the network device or a pre-configured resource pool if the timer is overtime.

In an optional implementation manner, the resource occupied by the link between the network device and the first terminal device is located on an unlicensed frequency band.

In an optional implementation manner, the resource configured by the network device is a semi-static resource, and the retransmission resource of the first data is a resource configured by the network device.

In another optional embodiment, the N consecutive retransmission resources of the first data are selected from the resource pool, the N +1 retransmission resources and the subsequent retransmission resources of the first data are resources configured by the network device, and N is a non-negative integer.

In yet another alternative embodiment, the retransmission resource for the first data is selected from the resource pool.

In an optional implementation manner, the initial transmission resource and the retransmission resource of M consecutive second data are selected from the resource pool, the initial transmission resource and the retransmission resource of the M +1 th second data and the subsequent second data are the resources configured by the network device, and M is a positive integer.

In another alternative embodiment, the initial transmission and retransmission resources for the second data are selected from the resource pool.

In yet another optional implementation manner, the initial transmission resource and P retransmission resources of the second data are selected from resources configured by the network device, the P +1 times retransmission resource and the subsequent retransmission resource of the second data are selected from the resource pool, and P is a positive integer.

In yet another alternative embodiment, the initial transmission resource and the P retransmission resources of the M second data are selected from the resources configured by the network device, the P +1 times retransmission resource and the subsequent retransmission resource of the M second data are selected from the resource pool, the initial transmission resource and the retransmission resource of the M +1 th second data and the subsequent second data are the resources configured by the network device, and M and P are positive integers.

In yet another optional implementation manner, the second data is data after the first terminal device transmits the first data to the second terminal device.

In yet another alternative implementation, the number of times that the first terminal device retransmits the first data or the second data using the resource selected from the resource pool is equal to the number of times of retransmission selected when the resource is selected in the resource pool minus the number of times that the first data is transmitted using the resource configured by the network device.

In an optional implementation manner, when the first terminal device transmits the mth second data by using the resource in the resource pool, the reservation period in the sidelink control information SCI is set to 0.

In an optional implementation manner, the resource configured by the network device is a semi-static resource or a dynamic resource.

In an optional implementation manner, the first terminal device stops the timing of the timer when receiving retransmission resources of the first data from the network device or receiving first indication information from the network device; the first indication information is used for indicating the first terminal device to stop the retransmission of the first data.

Optionally, the resource determining apparatus 400 may further include a communication unit 402 for communicating with other communication apparatuses.

The embodiments of the present application and the embodiments of the method described above are based on the same concept, and the technical effects brought by the embodiments are also the same.

Referring to fig. 5, fig. 5 is a schematic structural diagram of a terminal device 500 according to an embodiment of the present disclosure. The terminal device 500 described in the embodiment of the present application includes: the processor 501, the memory 502, the processor 501 and the memory 502 are connected by one or more communication buses.

The Processor 501 may be a Central Processing Unit (CPU), and may also be other general-purpose processors, digital Signal Processors (DSPs), application Specific Integrated Circuits (ASICs), field-Programmable Gate arrays (FPGAs) or other Programmable logic devices, discrete Gate or transistor logic devices, discrete hardware components, and the like. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The processor 501 is configured to support the first terminal device to perform the corresponding functions of the first terminal device in the method described in fig. 2.

The memory 502 may include read-only memory and random access memory, and provides computer programs and data to the processor 501. A portion of the memory 502 may also include non-volatile random access memory. The processor 501, when invoking the computer program, is configured to perform:

when the first feedback information is sent to the network equipment, starting a timer; the first feedback information is used for feeding back the failure of the first terminal equipment in transmitting the first data to the second terminal equipment;

and if the timer is overtime, selecting retransmission resources of the first data from the resources configured by the network equipment or a pre-configured resource pool.

The embodiments of the present application and the embodiments of the method described above are based on the same concept, and the technical effects brought by the embodiments are also the same.

The embodiment of the application further provides a chip, which is used for starting the timer when the first feedback information is sent to the network device; the first feedback information is used for feeding back the failure of the first terminal equipment in transmitting the first data to the second terminal equipment; and if the timer is overtime, selecting retransmission resources of the first data from the resources configured by the network equipment or a pre-configured resource pool.

Other implementations of the chip can be found in the related contents of the above method embodiments. And will not be described in detail herein.

The embodiments of the present application and the embodiments of the method described above are based on the same concept, and the technical effects brought by the embodiments are also the same.

The embodiment of the application provides a module equipment, module equipment includes treater and communication interface, the treater with communication interface links to each other, communication interface is used for receiving and dispatching signal, the treater is used for:

when the first feedback information is sent to the network equipment, starting a timer; the first feedback information is used for feeding back the failure of the first terminal equipment in transmitting the first data to the second terminal equipment; and if the timer is overtime, selecting retransmission resources of the first data from the resources configured by the network equipment or a pre-configured resource pool.

Other implementations of the module apparatus can be found in the related contents of the above method embodiments. And will not be described in detail herein.

The embodiments of the present application and the embodiments of the method described above are based on the same concept, and the technical effects brought by the embodiments are also the same.

An embodiment of the present application further provides a computer-readable storage medium, where the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the computer program may be used to implement the resource determining method described in the embodiment corresponding to fig. 2 in the present application, and details of the method are not repeated here.

The computer readable storage medium may be an internal storage unit of the terminal according to any of the foregoing embodiments, for example, a hard disk or a memory of the device. The computer-readable storage medium may also be an external storage device of the terminal device, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like provided on the device. Further, the computer-readable storage medium may also include both an internal storage unit and an external storage device of the terminal device. The computer-readable storage medium is used for storing the computer program and other programs and data required by the terminal device. The computer readable storage medium may also be used to temporarily store data that has been output or is to be output.

It will be understood by those skilled in the art that all or part of the processes in the methods of the embodiments described above may be implemented by a computer program, which may be stored in a readable storage medium, and when executed, may include the processes of the embodiments of the methods described above. The storage medium may be a magnetic disk, an optical disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), or the like.

The above disclosure is only for the purpose of illustrating the preferred embodiments of the present application and is not to be construed as limiting the scope of the present application, so that the present application is not limited thereto, and all equivalent variations and modifications can be made to the present application.

Claims (19)

1. A method for resource determination, the method comprising:

when the first terminal equipment sends the first feedback information to the network equipment, starting a timer; the first feedback information is used for feeding back the failure of the first terminal equipment in transmitting the first data to the second terminal equipment;

and if the timer is overtime, the first terminal equipment selects retransmission resources of the first data from the resources configured by the network equipment or a pre-configured resource pool.

2. The method of claim 1, wherein resources occupied by the link between the network device and the first terminal device are located in an unlicensed frequency band.

3. The method according to claim 1 or 2, wherein the configured resource of the network device is a semi-static resource, and the retransmission resource of the first data is the configured resource of the network device.

4. The method according to claim 1 or 2, wherein the N consecutive retransmission resources of the first data are selected from the resource pool, the N +1 retransmission resources and the subsequent retransmission resources of the first data are resources configured by the network device, and N is a non-negative integer.

5. The method according to claim 1 or 2, characterized in that the retransmission resource for the first data is selected from the resource pool.

6. The method according to claim 5, wherein M consecutive initial transmission and retransmission resources of the second data are selected from the resource pool, and the M +1 th initial transmission resource and retransmission resource of the second data and the subsequent second data are configured resources of the network device, where M is a positive integer.

7. The method of claim 5, wherein the initial transmission and retransmission resources for the second data are selected from the resource pool.

8. The method of claim 5, wherein the initial transmission resource and P retransmission resources of the second data are selected from the resources configured by the network device, and wherein P +1 retransmission resources and subsequent retransmission resources of the second data are selected from the resource pool, and wherein P is a positive integer.

9. The method according to claim 5, wherein M initial transmission resources and P retransmission resources of the second data are selected from the resources configured by the network device, P +1 retransmission resources and subsequent retransmission resources of the M second data are selected from the resource pool, M +1 initial transmission resources and subsequent retransmission resources of the second data are the resources configured by the network device, and M and P are positive integers.

10. The method according to any of claims 6 to 8, characterized in that the second data is data after the first data is transmitted by the first terminal device to the second terminal device.

11. The method according to any of claims 4 to 10, characterized in that the first terminal device retransmits the first or second data using a resource selected from the resource pool a number of times equal to the number of retransmissions selected when selecting a resource in the resource pool minus the number of times the first data is transmitted using the resource configured by the network device.

12. The method according to claim 6 or 9, characterized in that the method further comprises:

and when the first terminal equipment transmits the Mth second data by using the resources in the resource pool, setting a reserved period in the sidelink control information SCI to be 0.

13. The method according to any of claims 4 to 12, wherein the network device configured resource is a semi-static resource or a dynamic resource.

14. The method according to any one of claims 1 to 13, further comprising:

the first terminal device stops the timing of the timer when receiving the retransmission resource of the first data from the network device or receiving the first indication information from the network device;

the first indication information is used for indicating the first terminal device to stop the retransmission of the first data.

15. A resource determination apparatus, characterized in that the resource determination apparatus comprises:

the processing unit is used for starting the timer when the first feedback information is sent to the network equipment; the first feedback information is used for feeding back the failure of the first terminal equipment in transmitting the first data to the second terminal equipment;

and the processing unit is further configured to select a retransmission resource of the first data from a resource configured by the network device or a configured resource pool if the timer is overtime.

16. A terminal device, characterized in that the terminal device comprises a processor and a memory, the processor and the memory being interconnected, wherein the memory is configured to store a computer program comprising program instructions, the processor being configured to invoke the program instructions to perform the method according to any one of claims 1 to 14.

17. A chip, characterized in that,

the chip is used for starting the timer when the first feedback information is sent to the network equipment; the first feedback information is used for feeding back the failure of the first terminal equipment in transmitting the first data to the second terminal equipment;

the chip is further configured to select a retransmission resource of the first data from a resource configured by the network device or a pre-configured resource pool if the timer is overtime.

18. A modular device, comprising a processor and a communication interface, wherein the processor is connected to the communication interface, and the communication interface is configured to receive and transmit signals, and the processor is configured to:

when the first feedback information is sent to the network equipment, starting a timer; the first feedback information is used for feeding back the failure of the first terminal equipment in transmitting the first data to the second terminal equipment;

and if the timer is overtime, selecting retransmission resources of the first data from the resources configured by the network equipment or a pre-configured resource pool.

19. A computer-readable storage medium, characterized in that the computer-readable storage medium stores a computer program comprising program instructions that, when executed by a processor, cause the processor to carry out the method according to any one of claims 1 to 14.

Images