WO2021032064A1 - 一种确定侧行链路资源的方法、装置以及系统 - Google Patents
一种确定侧行链路资源的方法、装置以及系统 Download PDFInfo
- Publication number
- WO2021032064A1 WO2021032064A1 PCT/CN2020/109626 CN2020109626W WO2021032064A1 WO 2021032064 A1 WO2021032064 A1 WO 2021032064A1 CN 2020109626 W CN2020109626 W CN 2020109626W WO 2021032064 A1 WO2021032064 A1 WO 2021032064A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- communication device
- data packet
- terminal
- side link
- confirmation information
- Prior art date
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/1607—Details of the supervisory signal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1893—Physical mapping arrangements
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/02—Selection of wireless resources by user or terminal
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1829—Arrangements specially adapted for the receiver end
- H04L1/1864—ARQ related signaling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1867—Arrangements specially adapted for the transmitter end
- H04L1/1896—ARQ related signaling
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/04—Wireless resource allocation
- H04W72/044—Wireless resource allocation based on the type of the allocated resource
- H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W72/00—Local resource management
- H04W72/50—Allocation or scheduling criteria for wireless resources
- H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L2001/0092—Error control systems characterised by the topology of the transmission link
- H04L2001/0097—Relays
Definitions
- the embodiments of the present application relate to the field of communication technologies, and in particular, to a method, device, and system for determining side link resources.
- the communication interface between terminals may be called a PC5 interface.
- the PC5 interface is generally used in scenarios where vehicle-to-everything (V2X) or D2D can directly communicate between devices.
- V2X vehicle-to-everything
- the TX terminal can transmit sidelink data to the RX terminal through a sidelink (Sidelink, SL).
- SL sidelink
- the RX terminal may send hybrid automatic repeat request (HARQ) information to the TX terminal.
- HARQ hybrid automatic repeat request
- the HARQ information is used to indicate whether the side link data is successfully decoded.
- the TX terminal After the TX terminal receives the HARQ information, if it is determined that the HARQ information indicates that the side-link data has not been successfully decoded, the TX terminal can re-determine the side-link resource for retransmitting the side-link data.
- the TX terminal may not be able to receive the HARQ information fed back by the RX terminal. Therefore, when the TX terminal does not receive the HARQ information fed back by the RX terminal, how does the TX terminal handle the unsuccessfully received side chain? The subsequent data transmission of road data is a technical problem that needs to be solved urgently.
- the embodiments of the present application provide a method, device, and system for determining side link resources, which are used to improve the side link data when the first terminal does not receive the confirmation information of the second terminal for the first data packet. Reliability of transmission.
- an embodiment of the present application provides a method for determining a side link resource, including: the first communication device determines that the confirmation information for the first data packet from the second communication device is not received.
- the confirmation information is used to indicate whether the second communication device successfully decodes the first data packet.
- the first data packet is a data packet transmitted by the first communication device on the first side uplink resource.
- the first communication device obtains the second side link resource for retransmitting the first data packet.
- the first communication device may be the first terminal or a chip set in the first terminal
- the second communication device may be the second terminal or a chip set in the second terminal.
- the embodiment of the present application provides a method for determining side link resources.
- the first communication device may not send the first data packet to the second communication device, or the first communication device may send the first data packet to the second communication device.
- the communication device sends the first data packet, but due to the channel quality, the second communication device feeds back the confirmation information but the first communication device does not receive the confirmation information.
- the prior art does not involve the first communication device in determining the failure When the confirmation message is received, if the subsequent data transmission problem is dealt with, this may cause the reliability of the side link transmission to decrease. Therefore, in the embodiment of the present application, the first communication device determines that it has not received the first communication device from the second communication device.
- the first communication device When confirming information of a data packet, if the first communication device determines that the second communication device has not successfully decoded the first data packet, the first communication device reacquires the second side uplink resource for transmitting the first data packet, so It is convenient for the first communication device to subsequently retransmit the first data packet on the second side-link resource, which can improve the reliability of the side-link transmission.
- the first communication device acquiring the side link resource for retransmitting the first data packet includes: the first communication device triggers the first data packet
- the associated side link hybrid automatically repeats the request for resource reselection of the HARQ process.
- the first communication device selects the second side uplink resource from the side uplink resource pool. In this way, the first communication device can independently select the second side link resource.
- the first communication device triggers the side link hybrid automatic repeat request associated with the first data packet
- the resource reselection of the HARQ process includes: when the first communication device determines that the first data packet is not sent to the second communication device at time n, the first communication device triggers the resource reselection at time n. It should be understood that if the first communication device determines that the first data packet is not sent to the second communication device at time n, it can be determined that the second communication device has not successfully decoded the first data packet, so the first communication device triggers the resource at time n Re-election.
- the first communication device determines that the first data packet is not sent at the time when the first data packet should be sent, it can trigger the resource reselection, which can ensure that the first data packet is retransmitted through the reselected side link resources as soon as possible.
- Time n is the time when the first communication device sends the first data packet.
- the first communication device triggers the side link hybrid automatic repeat request associated with the first data packet
- the resource reselection of the HARQ process includes: the first communication device triggers the resource reselection at time n+X, where X is the time when the first communication device sends the first data packet and the first communication device receives feedback from the second communication device The time interval for confirming information. This facilitates the first communication device to determine the time for autonomous selection of the second side link resource.
- the first communication device obtains the side link resource used to retransmit the first data packet , Including: the first communication device receives the first configuration message from the network device.
- the first configuration message includes the side link resource associated with the side link HARQ process.
- the first communication device determines the side link resource associated with the side link HARQ process as the second side link resource.
- the first communication apparatus may determine the second side link resource used for retransmission in a network device scheduling manner.
- the method provided in this embodiment of the present application further includes: the first communication device feeds back the first communication device to the network device.
- An indication information, or the first communication device does not feed back the first indication information to the network device.
- the first indication information indicates that the second communication device has not successfully decoded the first data packet.
- the network device can determine that the second communication device has not successfully decoded the first data packet according to the first indication information, and then determine that the first communication device needs to allocate the second side uplink resource for retransmission.
- the first communication device and the network device negotiate in advance, if the second communication device fails to decode the first data packet, it may not need to feed back the first indication information, so if the network device determines that it has not received the data from the first communication device
- the first indication information can be used to determine that the second communication device has not successfully decoded the first data packet, and then it is determined that the first communication device 20 needs to allocate the second side uplink resource for retransmission.
- the first communication device determining that the second communication device has not successfully decoded the first data packet includes: When the first communication device sends the first data packet to the second communication device, but the first communication device does not receive the confirmation information from the second communication device, the first communication device determines that the second communication device has not successfully decoded the first data packet. data pack.
- the first communication device when the first condition is met, sends to the second communication device The first data packet, but the first communication device does not receive the confirmation information from the second communication device, the first communication device determines that the second communication device has not successfully decoded the first data packet; wherein, the first condition includes the following Any one or more of: the first side uplink logical channel in the first data packet is configured to require retransmission, where the first side uplink logical channel is the highest priority in the first data packet Side link logical channel; the first communication device is configured to need to retransmit; the random number generated by the first communication device from the first preset range is greater than the first threshold.
- the first communication device determines that the value of the first variable of the sidelink HARQ process is the first A value, the first value is used to indicate that the second communication device has not successfully decoded the first data packet.
- the method provided by the embodiment of the present application further includes: the first communication device determines that the value of the first variable of the sidelink HARQ process is a first value, and the first value is used to indicate that the second communication device has not successfully decoded the first data packet .
- the method provided by the first aspect in the embodiments of the present application may further include the solutions described in the second aspect, the third aspect, and the fourth aspect.
- an embodiment of the present application provides a method for determining a side link resource, including: a first communication device receives an indication from a second communication device for a first data packet that the second communication device has not successfully decoded the first data Confirmation information of the package. According to the confirmation information, the first communication device determines that the second communication device has not successfully decoded the first data packet. In a case where the first communication device determines that the second communication device has not successfully decoded the first data packet, the first communication device obtains the second side link resource for retransmitting the first data packet.
- the first communication device determines that the value of the first variable of the sidelink HARQ process is the first value, and the first value is used to indicate the second communication The device did not successfully decode the first data packet.
- the method provided by the embodiment of the present application further includes: the first communication device determines that the value of the first variable of the sidelink HARQ process is a first value, and the first value is used to indicate that the second communication device has not successfully decoded the first data packet .
- the method provided by the second aspect in the embodiments of the present application may further include the solutions described in the first aspect, the third aspect, and the fourth aspect.
- an embodiment of the present application provides a method for determining a side link resource, including: the first communication device determines that the confirmation information for the first data packet from the second communication device is not received.
- the confirmation information is used to indicate whether the second communication device successfully decodes the first data packet.
- the first communication device performs any one of the following steps: the first communication device sends or does not send the second instruction information to the network device, and The second indication information is used to indicate that the second communication device successfully decodes the first data packet.
- the second side link resource is the side link resource used to retransmit the first data packet; wherein the second side link resource is allocated by the network device , Or the side link resource reserved by the first communication device in the side link resource pool.
- the first communication device determining that the second communication device successfully decodes the first data packet includes: sending the first communication device to the second communication device from the first communication device. Data packet, but the first communication device does not receive the confirmation information from the second communication device, the first communication device determines that the second communication device successfully decodes the first data packet.
- the second condition when the second condition is met, the communication between the first communication device and the second communication device When the first data packet is sent, but the first communication device does not receive the confirmation information from the second communication device, the first communication device determines that the second communication device successfully decodes the first data packet; wherein, the second condition includes any of the following One: The first side uplink logical channel in the first data packet is configured to not require retransmission, where the first side uplink logical channel is the side uplink logic with the highest priority in the first data packet Channel; the first communication device is configured to not require retransmission; the first communication device determines that the random number generated from the second preset range is less than the second threshold.
- the first data packet is transmitted through the side link hybrid automatic repeat request HARQ process
- this application The method provided by the embodiment further includes: the first communication device determines that the value of the first variable of the sidelink HARQ process is a second value, and the second value is used to indicate that the second communication device successfully decodes the first data packet.
- the method provided by the third aspect in the embodiments of the present application may further include the solutions described in the first aspect, the second aspect, and the fourth aspect.
- an embodiment of the present application provides a method for determining a side link resource, including: a first communication device receives confirmation information for a first data packet from a second communication device.
- the confirmation information indicates that the second communication device successfully decodes the first data packet.
- the first communication device determines that the second communication device successfully decodes the first data packet.
- the first communication device performs any one of the following steps: the first communication device sends or does not send second indication information to the network device, and the second indication information is used to indicate that the second communication device successfully decodes the first data packet.
- the second side link resource is the side link resource used to retransmit the first data packet; wherein the second side link resource is allocated by the network device , Or the side link resource reserved by the first communication device in the side link resource pool.
- the first data packet is transmitted through the side link hybrid automatic repeat request HARQ process.
- the method provided in this embodiment of the application further includes: a first communication device It is determined that the value of the first variable of the side link HARQ process is the second value, and the second value is used to indicate that the second communication device successfully decodes the first data packet.
- the method provided by the fourth aspect in the embodiments of the present application may further include the solutions described in the first aspect, the second aspect, and the third aspect. That is, the various solutions described in the first, second, third, and fourth aspects can be combined.
- an embodiment of the present application provides a communication device that can implement the first aspect or any possible implementation method of the first aspect, and therefore can also implement any possible implementation of the first aspect or the first aspect.
- the beneficial effect in the realization method may be a first terminal, or a device that can support the first terminal to implement the first aspect or any possible implementation manner of the first aspect, such as a chip applied to the first terminal.
- the device can implement the above method by software, hardware, or by hardware executing corresponding software.
- an embodiment of the present application provides a communication device, including: a communication unit and a processing unit, where the communication unit may be a transceiver or may include one or more modules capable of sending and receiving information, and the processing unit may be a processing unit.
- the processor may also include one or more modules with processing functions. The following describes the processing unit and communication as an example.
- the processing unit is used to determine that the communication unit has not received the confirmation information for the first data packet from the second terminal.
- the confirmation information is used to indicate whether the second terminal successfully decodes the first data packet.
- the first data packet is a data packet transmitted by the first terminal on the first side uplink resource.
- the processing unit is configured to obtain the second side uplink resource for retransmitting the first data packet.
- the processing unit is configured to obtain a side link resource for retransmitting the first data packet, including: a processing unit, configured to trigger the first Resource reselection of the side link HARQ process associated with the data packet.
- the processing unit is configured to select the second side uplink resource from the side uplink resource pool.
- the processing unit is configured to trigger the sidelink HARQ process associated with the first data packet
- the resource reselection includes: a processing unit, configured to determine that when the communication unit does not send a first data packet to the second terminal at time n, the processing unit is configured to trigger resource reselection at time n.
- the processing unit is configured to trigger the hybrid automatic side link associated with the first data packet
- the repetitive request for resource reselection of the HARQ process includes: a processing unit for triggering resource reselection at time n+X, where X is the time when the communication unit sends the first data packet and the communication unit receives the confirmation information fed back by the second terminal Time interval.
- the processing unit is configured to obtain the side row chain used to retransmit the first data packet
- the path resource includes: a communication unit for receiving the first configuration message from the network device.
- the processing unit is configured to determine the side link resource used to retransmit the first data packet according to the first configuration message.
- the communication unit is further configured to feed back the first indication information to the network device, or to communicate The unit is also used to not feed back the first indication information to the network device.
- the first indication information indicates that the second terminal has not successfully decoded the first data packet.
- the processing unit configured to determine that the second terminal has not successfully decoded the first data packet is: In the case where the communication unit is used to send the first data packet to the second terminal, but the communication unit is used to not receive the confirmation information from the second terminal, the processing unit is used to determine that the second terminal has not successfully decoded the first data packet .
- the communication unit when the first condition is met, and the communication unit is used to send to the second terminal The first data packet, but the communication unit is used to determine that the second terminal has not successfully decoded the first data packet when the communication unit has not received the confirmation information from the second terminal; wherein, the first condition includes the following Any one or more of: the first side uplink logical channel in the first data packet is configured to require retransmission, where the first side uplink logical channel is the side with the highest priority in the first data packet Uplink logical channel; the device is configured to require retransmission; the processing unit determines that the random number generated from the first preset range is greater than the first threshold.
- the processing unit is configured to determine the value of the first variable of the side link HARQ process The first value is used to indicate that the second terminal has not successfully decoded the first data packet.
- the processing unit is further configured to determine that the value of the first variable of the side link HARQ process is a first value, and the first value is used to indicate that the second terminal has not successfully decoded the first data packet.
- the device provided by the fifth aspect in the embodiments of the present application may further include the solutions described in the sixth aspect, the seventh aspect, and the eighth aspect.
- an embodiment of the present application provides a communication device.
- the communication device may be a first terminal or a chip in the first terminal.
- the communication unit may be a transceiver.
- the processing unit may be a processor.
- the communication device may also include a storage unit.
- the storage unit may be a memory.
- the storage unit is used to store computer program code, and the computer program code includes instructions.
- the processing unit executes the instructions stored in the storage unit, so that the first terminal implements the method for determining the side link resource described in the first aspect or any one of the possible implementation manners of the first aspect.
- the processing unit may be a processor, and the communication unit may be collectively referred to as a communication interface.
- the communication interface may be an input/output interface, pin or circuit, etc.
- the processing unit executes the computer program code stored in the storage unit, so that the first terminal implements the method for determining side link resources described in the first aspect or any one of the possible implementations of the first aspect
- the The storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the first terminal located outside the chip (for example, a read-only memory, a random access memory, etc.).
- the processor, transceiver, and memory are coupled to each other.
- the embodiments of the present application provide a communication device that can implement the second aspect or any possible implementation method of the second aspect, and therefore can also implement any possible implementation of the second aspect or the second aspect.
- the beneficial effect in the realization method may be a first terminal, or a device that can support the first terminal to implement the second aspect or any possible implementation manner of the second aspect, for example, a chip applied to the first terminal.
- the device can implement the above method by software, hardware, or by hardware executing corresponding software.
- an embodiment of the present application provides a communication device, including: a communication unit and a processing unit, where the communication unit may be a transceiver or may include one or more modules capable of sending and receiving information, and the processing unit may be a processing unit.
- the processor may also include one or more modules with processing functions. The following describes the processing unit and communication as an example.
- the communication unit is configured to receive confirmation information from the second terminal for the first data packet indicating that the second terminal has not successfully decoded the first data packet.
- the processing unit is configured to determine, according to the confirmation information, that the second terminal has not successfully decoded the first data packet. In a case where it is determined that the second terminal has not successfully decoded the first data packet, the processing unit is configured to obtain the second side uplink resource for retransmitting the first data packet.
- the processing unit is configured to determine that the value of the first variable of the sidelink HARQ process is the first value, and the first value is used to indicate the second The terminal did not successfully decode the first data packet.
- the processing unit is further configured to determine that the value of the first variable of the side link HARQ process is a first value, and the first value is used to indicate that the second terminal has not successfully decoded the first data packet.
- the device provided by the sixth aspect in the embodiments of the present application may further include the solutions described in the fifth aspect, the seventh aspect, and the eighth aspect.
- the processing unit in the sixth aspect is configured to obtain the second side uplink resource used to retransmit the first data packet, which may refer to the description in the fifth aspect, which will not be repeated here.
- an embodiment of the present application provides a communication device.
- the communication device may be a first terminal or a chip in the first terminal.
- the communication unit may be a transceiver.
- the processing unit may be a processor.
- the communication device may also include a storage unit.
- the storage unit may be a memory.
- the storage unit is used to store computer program code, and the computer program code includes instructions.
- the processing unit executes the instructions stored in the storage unit, so that the first terminal implements the method for determining the side link resource described in the second aspect or any one of the possible implementation manners of the second aspect.
- the processing unit may be a processor, and the communication unit may be collectively referred to as a communication interface.
- the communication interface may be an input/output interface, pin or circuit, etc.
- the processing unit executes the computer program code stored in the storage unit, so that the first terminal implements the method for determining the side link resource described in the second aspect or any one of the possible implementation manners of the second aspect
- the The storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the first terminal located outside the chip (for example, a read-only memory, a random access memory, etc.).
- the processor, transceiver, and memory are coupled to each other.
- embodiments of the present application provide a communication device that can implement the third aspect or any possible implementation method of the third aspect, and therefore can also implement any possible implementation of the third aspect or the third aspect.
- the beneficial effect in the realization method may be a first terminal, or a device that can support the first terminal to implement the third aspect or any possible implementation manner of the third aspect, such as a chip applied to the first terminal.
- the device can implement the above method by software, hardware, or by hardware executing corresponding software.
- an embodiment of the present application provides a communication device, including: a communication unit and a processing unit, where the communication unit may be a transceiver or may include one or more modules capable of sending and receiving information, and the processing unit may be a processing unit.
- the processor may also include one or more modules with processing functions. The following describes the processing unit and communication as an example.
- the processing unit is configured to determine that the confirmation information for the first data packet from the second terminal is not received.
- the confirmation information is used to indicate whether the second terminal successfully decodes the first data packet.
- the processing unit is configured to perform any one of the following steps: sending or not sending second indication information to the network device through the communication unit, and the second indication information is used for Instruct the second terminal to successfully decode the first data packet.
- a processing unit, configured to release the second side uplink resource is the side uplink resource used to retransmit the first data packet; wherein, the second side uplink resource is used by the network device Allocation, or the side link resources reserved by the processing unit in the side link resource pool.
- the processing unit is configured to determine that the second terminal successfully decodes the first data packet: the communication unit sends the first data packet to the second terminal, but If the communication unit does not receive the confirmation information from the second terminal, the processing unit is configured to determine that the second terminal successfully decodes the first data packet.
- the processing unit determines The second terminal successfully decodes the first data packet; wherein, the second condition includes any of the following: the first side uplink logical channel in the first data packet is configured to not require retransmission, and the first side uplink logic The channel is the side link logical channel with the highest priority in the first data packet; the device is configured to not require retransmission; the processing unit determines that the random number generated from the second preset range is less than the second threshold.
- the first data packet is transmitted through the side-link HARQ process.
- the processing unit provided in the embodiment of the present application is also used to determine the value of the first variable of the side-link HARQ process as the second value ,
- the second value is used to indicate that the second terminal successfully decodes the first data packet.
- the device provided in the seventh aspect of the embodiments of the present application may also be used to execute the solutions described in the fifth aspect, the sixth aspect, and the eighth aspect.
- an embodiment of the present application provides a communication device.
- the communication device may be a first terminal or a chip in the first terminal.
- the communication unit may be a transceiver.
- the processing unit may be a processor.
- the communication device may also include a storage unit.
- the storage unit may be a memory.
- the storage unit is used to store computer program code, and the computer program code includes instructions.
- the processing unit executes the instructions stored in the storage unit, so that the first terminal implements the method for determining the side link resource described in the third aspect or any one of the possible implementation manners of the third aspect.
- the processing unit may be a processor, and the communication unit may be collectively referred to as a communication interface.
- the communication interface may be an input/output interface, pin or circuit, etc.
- the processing unit executes the computer program code stored in the storage unit to enable the first terminal to implement the method for determining the side link resource described in the third aspect or any one of the possible implementation manners of the third aspect
- the The storage unit may be a storage unit in the chip (for example, a register, a cache, etc.), or a storage unit in the first terminal located outside the chip (for example, a read-only memory, a random access memory, etc.).
- the processor, transceiver, and memory are coupled to each other.
- embodiments of the present application provide a communication device, which can implement the fourth aspect or any possible implementation method of the fourth aspect, and therefore can also implement any possible implementation of the fourth aspect or the fourth aspect The beneficial effect in the realization method.
- the communication device may be a first terminal, or a device that can support the first terminal to implement the fourth aspect or any possible implementation manner of the fourth aspect, for example, a chip applied to the first terminal.
- the device can implement the above method by software, hardware, or by hardware executing corresponding software.
- an embodiment of the present application provides a communication device, including: a communication unit and a processing unit, where the communication unit may be a transceiver or may include one or more modules capable of sending and receiving information, and the processing unit may be a processing unit.
- the processor may also include one or more modules with processing functions. The following describes the processing unit and communication as an example.
- the communication unit is configured to receive the confirmation information for the first data packet from the second terminal.
- the confirmation information indicates that the second terminal successfully decodes the first data packet.
- the processing unit is configured to determine, according to the confirmation information, that the second terminal successfully decodes the first data packet.
- the processing unit is configured to perform any one of the following steps: sending or not sending second instruction information to the network device through the communication unit, the second instruction information being used to instruct the second terminal to successfully decode the first data packet.
- a processing unit, configured to release the second side uplink resource is the side uplink resource used to retransmit the first data packet; wherein, the second side uplink resource is used by the network device Allocation, or the side link resources reserved by the processing unit in the side link resource pool.
- the first data packet is transmitted through the side link HARQ process.
- the processing unit provided in the embodiment of the present application is also used to determine the side link
- the value of the first variable of the HARQ process is the second value, and the second value is used to indicate that the second terminal successfully decodes the first data packet.
- the device provided by the eighth aspect in the embodiments of the present application may further include the solutions described in the fifth, sixth, and seventh aspects. That is, the various solutions described in the fifth, sixth, seventh, and eighth aspects can be combined.
- the embodiments of the present application provide a computer-readable storage medium.
- the computer-readable storage medium stores a computer program or instruction.
- the computer program or instruction When the computer program or instruction is run on a computer, the computer executes the steps as described in the first aspect to the first aspect.
- an embodiment of the present application provides a computer-readable storage medium.
- the computer-readable storage medium stores a computer program or instruction.
- the computer program or instruction runs on a computer, the computer executes the operations as described in the second aspect to the first aspect.
- an embodiment of the present application provides a computer-readable storage medium.
- the computer-readable storage medium stores a computer program or instruction.
- the computer program or instruction When the computer program or instruction is run on a computer, the computer executes the third aspect to A method for determining side link resources described in any possible implementation manner of the third aspect.
- the embodiments of the present application provide a computer-readable storage medium.
- the computer-readable storage medium stores a computer program or instruction.
- the computer program or instruction runs on the computer, the computer can execute the fourth aspect to A method for determining side link resources described in any possible implementation manner of the fourth aspect.
- the embodiments of the present application provide a computer program product that includes instructions.
- the instructions run on a computer, the computer executes the first aspect or the various possible implementations of the first aspect. Sidelink resource method.
- this application provides a computer program product including instructions, which when the instructions run on a computer, cause the computer to execute the second aspect or a certain side line described in the various possible implementations of the second aspect Link resource method.
- this application provides a computer program product including instructions, which when the instructions run on a computer, cause the computer to execute the third aspect or a certain side line described in various possible implementations of the third aspect Link resource method.
- the present application provides a computer program product including instructions, which when the instructions run on a computer, cause the computer to execute the fourth aspect or a certain side line described in the various possible implementations of the fourth aspect Link resource method.
- the embodiments of the present application provide a communication device for implementing various possible designs in any of the foregoing first to fourth aspects.
- the communication device may be the aforementioned first terminal or a device including the aforementioned first terminal.
- the communication device includes a module, unit, or means corresponding to the foregoing method, and the module, unit, or means can be implemented by hardware, software, or hardware executing corresponding software.
- the hardware or software includes one or more modules or units corresponding to the above-mentioned functions.
- an embodiment of the present application provides a communication device, which includes: at least one processor and a communication interface.
- the processor executes the computer-executable instructions stored in the communication device, so that the communication device executes various possible designs as described in any of the first to fourth aspects. Any of the methods.
- the communication device may be the first terminal or a chip applied in the first terminal.
- the communication device described in the eighteenth aspect may further include: a bus and a memory, and the memory is used to store code and data.
- the memory is used to store code and data.
- at least one processor communication interface and the memory are coupled with each other.
- embodiments of the present application provide a communication system.
- the communication system includes any one or more of the following: the fifth aspect, the sixth aspect, the seventh aspect, or the eighth aspect and various possible implementation manners The communication device described in, and the second terminal.
- the communication system may also include: network equipment.
- an embodiment of the present application provides a communication device that includes a processor and a storage medium, the storage medium stores instructions, and when the instructions are executed by the processor, the first aspect or The methods described in the various possible implementations of the first aspect.
- an embodiment of the present application provides a communication device that includes a processor and a storage medium.
- the storage medium stores instructions.
- the implementation is as in the second aspect. Or the methods described in the various possible implementations of the second aspect.
- an embodiment of the present application provides a communication device, the communication device includes a processor and a storage medium, the storage medium stores instructions, and when the instructions are executed by the processor, the third aspect is implemented Or the methods described in the various possible implementations of the third aspect.
- an embodiment of the present application provides a communication device that includes a processor and a storage medium.
- the storage medium stores instructions.
- the fourth aspect is implemented. Or the methods described in the various possible implementations of the fourth aspect.
- an embodiment of the present application provides a communication device that includes one or more modules for implementing the methods of the first, second, third, and fourth aspects described above.
- One or more modules may correspond to the steps in the methods of the first, second, third, and fourth aspects described above.
- an embodiment of the present application provides a chip including a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used to run a computer program or instruction to implement the first aspect or the first aspect. A method described in various possible implementations.
- the communication interface is used to communicate with modules other than the chip.
- an embodiment of the present application provides a chip that includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a computer program or instruction to implement the second aspect or the second aspect A method described in various possible implementations.
- the communication interface is used to communicate with other modules outside the chip.
- an embodiment of the present application provides a chip that includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a computer program or instruction to implement the third aspect or the third aspect A method described in various possible implementations.
- the communication interface is used to communicate with other modules outside the chip.
- an embodiment of the present application provides a chip including a processor and a communication interface, the communication interface and the processor are coupled, and the processor is used to run a computer program or instruction to implement the fourth aspect or the fourth aspect A method described in various possible implementations.
- the communication interface is used to communicate with modules other than the chip.
- the chip provided in the embodiment of the present application further includes a memory for storing computer programs or instructions.
- any of the above-provided devices or computer storage media or computer program products or chips or communication systems are used to execute the corresponding methods provided above. Therefore, the beneficial effects that can be achieved can refer to the corresponding ones provided above The beneficial effects of the corresponding solutions in the method will not be repeated here.
- FIG. 1 is an architecture diagram of a communication system provided by an embodiment of this application.
- FIG. 2 is a schematic structural diagram of a communication device provided by an embodiment of this application.
- 3a to 3d are schematic diagrams of feedback confirmation information between the network device and the terminal;
- 4 to 6 are schematic flowcharts of a method for determining side link resources according to an embodiment of this application;
- FIG. 7 is a schematic structural diagram of a communication device provided by an embodiment of this application.
- FIG. 8 is a schematic structural diagram of another communication device provided by an embodiment of this application.
- FIG. 9 is a schematic structural diagram of a chip provided by an embodiment of the application.
- words such as “first” and “second” are used to distinguish the same items or similar items that have substantially the same function and effect.
- the first terminal and the first terminal are only used to distinguish different terminals, and the sequence of the first terminal is not limited.
- words such as “first” and “second” do not limit the quantity and order of execution, and words such as “first” and “second” do not limit the difference.
- At least one refers to one or more, and “multiple” refers to two or more.
- “And/or” describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, both A and B exist, and B exists alone, where A, B can be singular or plural.
- the character “/” generally indicates that the associated objects are in an "or” relationship.
- "The following at least one item (a)” or similar expressions refers to any combination of these items, including any combination of a single item (a) or plural items (a).
- at least one item (a) of a, b, or c can mean: a, b, c, ab, ac, bc, or abc, where a, b, and c can be single or multiple .
- LTE long-term evolution
- FDD frequency division duplex
- TDD time division duplex
- UMTS universal mobile telecommunication system
- WiMAX worldwide interoperability for microwave access
- PLMN public land mobile network
- D2D device-to-device
- M2M machine to machine
- future 5G communication systems such as: long-term evolution (LTE) system, LTE frequency division duplex (FDD) system, LTE time division duplex (TDD) ) System, universal mobile telecommunication system (UMTS), worldwide interoperability for microwave access (WiMAX) communication system, public land mobile network (PLMN) system, device-to-device (device to device, D2D) network system or machine to machine (machine to machine, M2M) network system and future 5G communication systems.
- LTE long-term evolution
- FDD frequency division duplex
- TDD time division duplex
- UMTS universal mobile telecommunication system
- WiMAX worldwide interoperability for microwave access
- PLMN public land
- Sidelink refers to a link defined for direct communication between a terminal and a terminal, that is, a link that communicates directly between a first terminal and a second terminal without being forwarded by a network device.
- Sidelink resources refer to resources used by the first terminal to transmit Sidelink information (for example, data packets, or V2X services) with the second terminal on the side link.
- Sidelink information for example, data packets, or V2X services
- Sidelink information refers to sidelink data or control information transmitted by any two terminals on the sidelink.
- FIG. 1 shows a communication system to which a method for determining side link resources provided by an embodiment of the present application is applied.
- the communication system includes: one or more network devices (for example, as shown in FIG. The network device 10), one or more terminals (such as the first terminal 20, the second terminal 30, and the third terminal 40 shown in FIG. 1).
- the terminal is a vehicle as an example.
- the first terminal 20 communicates with the network device 10, and the first terminal 20 and the second terminal 30, and the second terminal 30 and the third terminal 40 communicate.
- the second terminal 30 and the third terminal 40 can also communicate with the network device 10.
- the communication system shown in FIG. 1 may also include a core network.
- the network device 10 can be connected to the core network.
- the core network may be a 4G core network (for example, evolved packet core (EPC)) or a 5G core network (5G core, 5GC), or a core network in various future communication systems.
- EPC evolved packet core
- 5G core 5G core
- RSU roadside unit
- RSU can also provide various types of service information and data network access for each terminal in the system. For example, taking the terminal as a vehicle, for example, RSU can also provide non-stop toll and in-vehicle charging for each terminal in the system. Functions such as entertainment have greatly improved traffic intelligence.
- the network device 10 may be an evolved Node B (eNB or eNodeB) in a 4G system.
- the first terminal 20 is a terminal that can perform information transmission with an eNB.
- the eNB accesses the EPC network through the S1 interface.
- the network device 10 may be the next generation node B (gNB) in the NR system, and the first terminal 20 is a terminal that can transmit information with the gNB.
- the gNB is connected to the 5GC through the NG interface.
- the network device 10 may also be a third generation partnership project (3rd generation partnership project, 3GPP) protocol base station, or may be a non-3GPP protocol base station.
- 3GPP third generation partnership project
- first transmission link between the network device 10 and the first terminal 20.
- first transmission link may be a Uu link.
- second transmission link between the first terminal 20 and the second terminal 30.
- the second transmission link may be a side link.
- the first terminal 20 and the second terminal 30 can transmit V2X services to each other on Sidelink, which can also be referred to as a first data packet or Sindlink information.
- the first terminal 20 may transmit an uplink (Uplink, UL) Uu service to the network device 10 on the Uu link, and may also receive a downlink (Downlink, DL) Uu service sent by the network device 10 on the Uu link.
- Uplink, UL uplink
- Downlink Downlink
- DL downlink
- the interface through which the first terminal 20 and the second terminal 30 communicate through direct connection may be the interface 1.
- the interface 1 can be called a PC5 interface, and uses a dedicated frequency band (such as 5.9 GHz) for the Internet of Vehicles.
- the interface between the first terminal 20 and the network device 10 may be referred to as interface 2 (for example, Uu interface), and adopts a cellular network frequency band (for example, 1.8 GHz).
- the PC5 interface is generally used in V2X or D2D scenarios where direct communication between devices is possible.
- interface 1 and interface 2 are only examples, and the embodiment of the present application does not limit the names of interface 1 and interface 2.
- Fig. 1 shows an example of a scenario provided by an embodiment of the present application.
- the vehicle 1 taking the first terminal 20 as an example of a vehicle 1, if the vehicle 1 decides to perform an overtaking operation, then the vehicle 1
- the first data packet in the dialog box 50 (for example, the first data packet may be an overtaking instruction, vehicle 1) may be sent to the second terminal 30 (for example, vehicle 2) located in front of it on the first sidelink resource.
- the current vehicle speed (for example, 75km/h)), so that the vehicle 2 will slow down after receiving the current speed of 1 and the overtaking instruction, so that the vehicle 1 can overtake safely.
- the vehicle 2 can feed back the information of the dialog box 60 to the vehicle 1 (ie, ACK, used to indicate correct reception).
- the vehicle 2 may have sent the information of the dialog box 60 to the vehicle 1, but because the quality of the channel between the vehicle 2 and the vehicle 1 is lower than the threshold, the vehicle 1 did not receive the ACK fed back by the vehicle 2.
- vehicle 2 needs to perform random access at the same time as sending ACK or send information about whether vehicle 2 is accelerating or vehicle to third terminal 40, so as to give up feedback ACK, and perform random access first or send vehicle 2 to third terminal 40 Whether to accelerate or the information of the vehicle, and give up transmitting ACK, these factors will cause the vehicle 1 to not receive the ACK feedback from the vehicle 2, therefore, the vehicle 1 determines that the ACK from the vehicle 2 is not received. Since vehicle 1 determines that it has not received the ACK from vehicle 2 and vehicle 1 does not know whether vehicle 2 has successfully decoded it, vehicle 1 needs to resend 1’s current speed and overtaking instructions to vehicle 2 in order to ensure safety during overtaking. . Therefore, the vehicle 1 needs to reacquire the current vehicle speed of transmission 1 and the side link resources of the overtaking instruction.
- FIG. 1 The scenario shown in FIG. 1 is only an example, and other scenarios of communication between terminals are also applicable to the solution of this application.
- V2X services are transmitted on Sidelink resources on Sidelink
- Uu services are transmitted on Uu resources on Uu links.
- the first terminal 20 may transmit Sidelink data or Sidelink information to the second terminal 30 on the Sidelink resource.
- the other is the way in which the first terminal 20 autonomously selects resources in the resource pool, that is, the first terminal 20 autonomously selects Sidelink resources in the resource pool configured or pre-configured by the network device 10 through system messages or dedicated signaling to The Sidelink data or Sidelink information is transmitted to the second terminal 30 on the independently selected Sidelink resource.
- the first terminal 20 or the second terminal 30 is a device with wireless communication function, which can be deployed on land, including indoor or outdoor, handheld or vehicle-mounted. It can also be deployed on the water (such as ships, etc.). It can also be deployed in the air (for example, on airplanes, balloons, and satellites).
- the terminal is also called user equipment (UE), mobile station (MS), mobile terminal (mobile terminal, MT), and terminal equipment, etc., which provide users with voice and/or data connectivity. equipment.
- terminals include handheld devices and vehicle-mounted devices with wireless connection functions.
- the terminal can be: mobile phone (mobile phone), tablet computer, notebook computer, palm computer, mobile internet device (MID), wearable device (such as smart watch, smart bracelet, pedometer, etc.), In-vehicle equipment (for example, cars, bicycles, electric vehicles, airplanes, ships, trains, high-speed rail, etc.), virtual reality (VR) equipment, augmented reality (AR) equipment, industrial control (industrial control) Wireless terminals, smart home equipment (for example, refrigerators, TVs, air conditioners, electricity meters, etc.), smart robots, workshop equipment, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart Wireless terminals in a smart grid, wireless terminals in transportation safety, wireless terminals in a smart city, or wireless terminals in a smart home, and flying equipment (e.g., smart Robots, hot air balloons, drones, airplanes, etc.
- MID mobile internet device
- wearable device such as smart watch, smart bracelet, pedometer, etc.
- In-vehicle equipment for example, cars
- the terminal device is a terminal device that often works on the ground, such as a vehicle-mounted device.
- chips deployed in the above devices such as System-On-a-Chip (SOC), baseband chips, etc., or other chips with communication functions may also be referred to as terminals.
- the terminal may be a vehicle with corresponding communication function, or a vehicle-mounted communication device, or other embedded communication device, or a user-held communication device, including a mobile phone, a tablet computer, and the like.
- the terminal may also be a wearable device.
- Wearable devices can also be called wearable smart devices. It is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes.
- a wearable device is a portable device that is directly worn on the body or integrated into the user's clothes or accessories. Wearable devices are not only a hardware device, but also realize powerful functions through software support, data interaction, and cloud interaction.
- wearable smart devices include full-featured, large-sized, complete or partial functions that can be achieved without relying on smart phones, such as smart watches or smart glasses, and only focus on a certain type of application function, and need to cooperate with other devices such as smart phones.
- the network device 10 is an entity that cooperates with the first terminal 20 and can be used to transmit or receive signals.
- it can be an access point (AP) in a WLAN, an evolved base station (evolved Node B, eNB, or eNodeB) in LTE, or a relay station or access point, or a vehicle-mounted device, a wearable device
- AP access point
- eNB evolved Node B
- eNodeB evolved Node B
- the network equipment provides services for the cell
- the terminal communicates with the network equipment through the transmission resources (for example, time domain resources, or frequency domain resources, or time-frequency resources) used by the cell.
- the cell can be a cell corresponding to a network device (e.g. a base station).
- the cell can belong to a macro base station or a base station corresponding to a small cell.
- the small cell here can include: metro cell, micro cell ( Micro cells, pico cells, femto cells, etc. These small cells have the characteristics of small coverage and low transmit power, and are suitable for providing high-rate data transmission services.
- FIG. 2 shows a schematic diagram of the hardware structure of a communication device provided by an embodiment of the present application.
- the hardware structure of the first terminal 20, the second terminal 30, and the network device 10 in the embodiment of the present application may refer to the structure shown in FIG. 2.
- the communication device includes a processor 41, a communication line 44, and at least one transceiver (in FIG. 2 it is only an example that the transceiver 43 is included for illustration).
- the processor 41 may be a general-purpose central processing unit (CPU), a microprocessor, an application-specific integrated circuit (ASIC), or one or more programs for controlling the execution of the program of this application. integrated circuit.
- CPU central processing unit
- ASIC application-specific integrated circuit
- the communication line 44 may include a path to transmit information between the aforementioned components.
- the transceiver 43 uses any device such as a transceiver for communication with other devices or communication networks, such as Ethernet, radio access network (RAN), wireless local area networks (WLAN), etc. .
- RAN radio access network
- WLAN wireless local area networks
- the communication device may further include a memory 42.
- the memory 42 may be a read-only memory (ROM) or other types of static storage devices that can store static information and instructions, random access memory (RAM), or other types that can store information and instructions
- the dynamic storage device can also be electrically erasable programmable read-only memory (EEPROM), compact disc read-only memory (CD-ROM) or other optical disk storage, optical disc storage (Including compact discs, laser discs, optical discs, digital versatile discs, Blu-ray discs, etc.), magnetic disk storage media or other magnetic storage devices, or can be used to carry or store desired program codes in the form of instructions or data structures and can be used by a computer Any other media accessed, but not limited to this.
- the memory can exist independently and is connected to the processor through the communication line 44. The memory can also be integrated with the processor.
- the memory 42 is used to store computer-executable instructions for executing the solution of the present application, and the processor 41 controls the execution.
- the processor 41 is configured to execute computer-executable instructions stored in the memory 42 to implement the policy control method provided in the following embodiments of the present application.
- the computer-executable instructions in the embodiments of the present application may also be referred to as application program code, which is not specifically limited in the embodiments of the present application.
- the processor 41 may include one or more CPUs, such as CPU0 and CPU1 in FIG. 2.
- the communication device may include multiple processors, such as the processor 41 and the processor 45 in FIG. 2.
- processors can be a single-CPU (single-CPU) processor or a multi-core (multi-CPU) processor.
- the processor here may refer to one or more devices, circuits, and/or processing cores for processing data (for example, computer program instructions).
- FIG. 3a on the Uu link, one method to ensure the reliability of data transmission between the terminal and the network device is to perform HARQ retransmission on the data.
- the basic process of HARQ for uplink data transmission on the Uu link is shown in Figure 3a: 1.
- the network device 10 sends a physical downlink control channel (PDCCH) to the first terminal 20, and the PDCCH schedules the first terminal 20 Transmit new upstream data.
- the first terminal 20 sends uplink data to the network device 10. 3. After the network device 10 receives the uplink data, if the network device 10 fails to decode.
- PDCCH physical downlink control channel
- the network device 10 sends a PDCCH to the first terminal 20, and the PDCCH is used to schedule the first terminal 20 to retransmit the uplink data that has not been successfully decoded by the network device 10 in the foregoing steps. 4.
- the first terminal 20 retransmits the uplink data on the retransmission resource after determining the location of the retransmission resource according to the PDCCH.
- the basic process of HARQ for downlink data transmission on the Uu link 1.
- the network device 10 sends downlink data to the first terminal 20. 2.
- the first terminal 20 receives the downlink data, if the decoding fails, the first terminal 20 feeds back a NACK to the network device 10.
- the network device 10 retransmits the downlink data after receiving the NACK. This allows the first terminal 20 to re-receive downlink data on a new physical downlink shared channel (PDSCH) according to the retransmission instruction.
- PDSCH physical downlink shared channel
- the network device 10 performs retransmission of downlink data. 4.
- the first terminal 20 succeeds in decoding, and then feeds back an ACK to the network device 10.
- the network device 10 performing the retransmission of downlink data includes: the network device 10 indicates the resource location of the PDSCH through the PDCCH, and the PDSCH carries the retransmitted downlink data.
- the basic HARQ process of side-link data transmission is shown in FIG. 3c: 1.
- the first terminal 20 sends side-link data (including new transmission and retransmission of data) to the second terminal 30.
- the second terminal 30 decodes the side link data. Since in the current LTE system, the first terminal 20 transmits side-link data in a broadcast mode, no matter whether the second terminal 30 successfully decodes the side-link data, the second terminal 30 does not send ACK/ to the first terminal 20. NACK feedback. Since the first terminal 20 does not receive the ACK fed back by the second terminal 30, it may mistakenly believe that the second terminal 30 has not successfully decoded it.
- the subsequent process it may continue to retransmit the side chain to the second terminal 30 as in steps 2 to M.
- the second terminal 30 since the second terminal 30 has successfully decoded the side uplink data, the second terminal 30 no longer decodes the retransmitted side uplink data. This will cause the first terminal 20 to repeatedly send side-link data, resulting in waste of side-link resources.
- Sidelink supports unicast, multicast and broadcast transmission.
- a retransmission mechanism based on HARQ feedback is supported.
- the HARQ process of side link data transmission is shown in Figure 3d:
- the network device 10 sends a PDCCH to the first terminal 20 to schedule the new transmission of side link data of the first terminal 20. 2.
- the first terminal 20 sends side link data to the second terminal 30. 3.
- the second terminal 30 receives the side link data, if the decoding fails, the second terminal 30 feeds back a NACK to the first terminal 20. 4.
- the first terminal 20 feeds back a NACK to the network device 10. 5.
- the network device 10 sends a PDCCH to the first terminal 20, and schedules the first terminal 20 to re-send to the second terminal 30 the side link that the second terminal 30 has not successfully decoded Data, that is, retransmission of side link data. 6.
- the first terminal 20 performs side-link retransmission.
- the first terminal 20 may not receive the confirmation information fed back by the second terminal 30. At this time, the first terminal 20 may not be sure whether the second terminal 30 correctly receives the side link data. Furthermore, the first terminal 20 is not sure how to process the side link data subsequently.
- the embodiment of the present application provides a method for determining side link resources, and the execution subject of the method is a first communication device.
- the first communication device may be the first terminal 20 or a chip set in the first terminal 20.
- the second communication device in this method may be the second terminal 30 or a chip set in the second terminal 30.
- the first communication device is the first terminal 20 and the second communication device is the second terminal 30 as an example.
- FIG. 4 shows a method for determining side link resources provided by an embodiment of the present application, including:
- Step 401 The first terminal 20 determines that the confirmation information for the first data packet from the second terminal 30 is not received.
- the confirmation information is used to indicate whether the second terminal 30 successfully decodes the first data packet.
- the first data packet is a data packet transmitted by the first terminal 20 on the first side uplink resource.
- the confirmation information in the embodiment of the present application may also be referred to as side link HARQ information.
- the confirmation information may be ACK, or the confirmation information in the embodiment of the present application may be NACK.
- ACK is used to indicate that the second terminal 30 successfully decodes the first data packet.
- NACK is used to indicate that the second terminal 30 has not successfully decoded the first data packet.
- successful decoding in the embodiment of the present application can also be replaced by successful reception.
- unsuccessful decoding can also be replaced by unsuccessful reception.
- successful decoding and unsuccessful decoding are taken as examples.
- the first side link resource is a side link resource configured by the network device 10 for the first terminal 20 to transmit the first data packet.
- the first side link resource is the side link resource selected by the first terminal 20 from the side link resource pool for transmitting the first data packet.
- the first data packet may be a newly transmitted data packet.
- the newly transmitted data packet is the data packet that the first terminal 20 transmits to the second terminal 30 for the first time (first time).
- the first data packet is a retransmission data packet.
- the retransmitted data packet is the data packet that the first terminal 2 transmits to the second terminal 30 for the Mth time.
- the retransmission data packet is the data packet that the first terminal 20 transmits to the second terminal 30 for the first time.
- M is an integer greater than or equal to 2, and M is less than or equal to the maximum number of retransmissions of the first terminal 20. Or M is less than or equal to the maximum number of retransmissions of the side link HARQ process of the first data packet.
- Step 402 When the first terminal 20 determines that the second terminal 30 has not successfully decoded the first data packet, the first terminal 20 obtains the second side uplink resource for retransmitting the first data packet.
- the second side link resource may be a side link resource independently selected by the first terminal 20.
- the second side link resource may be a side link resource configured by the network device 10 for the first terminal 20.
- the method provided in the embodiment of the present application further includes after step 402: the first terminal 20 retransmits the first data packet to the second terminal 30 on the second side uplink resource.
- the second terminal 30 may re-receive the first data packet on the second side uplink resource.
- the first terminal may fail to send the first data packet to the second terminal at the time when it should send the first data packet to the second terminal. Or the first terminal sends the first data packet to the second terminal, but due to the channel quality, the second terminal feeds back the confirmation information but the first terminal does not receive the confirmation information, or the first terminal sends the The second terminal sends the first data packet, but the second terminal fails to feed back the confirmation information for the first data packet to the first terminal.
- the prior art does not involve that when the first terminal determines that it has not received the confirmation information, if the subsequent data transmission problem is dealt with, this may cause the reliability of the side link transmission to decrease.
- the first terminal in the embodiment of the present application When it is determined that the confirmation information for the first data packet from the second terminal has not been received, if the first terminal determines that the second terminal has not successfully decoded the first data packet, the first terminal reacquires the first data packet used to transmit the first data packet. Two-side uplink resources, so that it is convenient for the first terminal to subsequently retransmit the first data packet on the second side uplink resources, which can improve the reliability of side uplink transmission.
- Step 401 in the embodiment of the present application can be implemented in any one of the following cases 1 or 2:
- the first terminal 20 should use the first side uplink resource on the side link to send the first data packet to the second terminal 30 at time n, but the first terminal 20 does not actually send the first data packet to the second terminal at time n.
- the terminal 30 sends the first data packet. Therefore, the first terminal 20 determines that the confirmation information for the first data packet from the second terminal 30 is not received.
- time n is the time when the first terminal 20 should send the first data packet.
- the side link is the link between the first terminal 20 and the second terminal 30.
- the first terminal 20 determines that the confirmation information for the first data packet from the second terminal 30 is not received.
- the time when the first terminal 20 sends the first data packet is the same as the time when the first terminal 20 sends the uplink data or the uplink message to the network device 10, and the priority of the side link channel carrying the first data packet If it is lower than the physical uplink channel carrying uplink data or uplink message, the first terminal 20 abandons sending the first data packet to the second terminal 30.
- the first terminal 20 uses the first side link resource on the side link to send the first data packet to the second terminal 30 at time n, but then the first terminal 20 does not receive the data from the second terminal 30.
- the confirmation information for the first data packet therefore, the first terminal 20 determines that the confirmation information for the first data packet from the second terminal 30 is not received.
- the second terminal 30 receives the first data packet, and regardless of whether the second terminal 30 successfully decodes the first data packet, the second terminal 30 will generate NACK or ACK as the confirmation information.
- the second terminal 30 feeds back NACK or ACK as confirmation information to the first terminal 20, however, the first terminal 20 does not receive the NACK or ACK due to the channel quality problem of transmitting the NACK or ACK. Therefore, the first terminal 20 determines that the confirmation information for the first data packet from the second terminal 30 is not received.
- the time when the second terminal 30 feeds back NACK or ACK as the confirmation information to the first terminal 20 is the same or conflicts with the time when the second terminal 30 sends uplink data or uplink messages to other terminals or network devices.
- 30 gives up feeding back NACK or ACK to the first terminal 20, resulting in the ACK/NACK cannot be sent. Therefore, the first terminal 20 determines that the confirmation information for the first data packet from the second terminal 30 is not received.
- the first terminal 20 in the embodiment of the present application can independently select the second side link resource from the side link resource pool, of course, the first terminal 20 can also trigger the network device 10 to determine the second side link resource from the network device 10.
- Two-side uplink resources The following will be introduced separately:
- Example 1 The way in which the first terminal 20 autonomously selects side link resources
- the first terminal acquiring the sidelink resource for retransmitting the first data packet includes:
- Step 4021 the first terminal 20 triggers the side link hybrid automatic repeat request for the HARQ process resource reselection associated with the first data packet.
- Step 4021 can be specifically implemented in the following manner: when the first terminal 20 determines that the second terminal 30 has not successfully decoded the first data packet, the first terminal 20 triggers resource reselection at time n. This implementation is applicable to the case where the first terminal 20 does not send the first data packet to the second terminal 30 at time n. Time n is the time when the first terminal sends the first data packet.
- Step 4021 may be specifically implemented in the following manner: when the first terminal 20 determines that the second terminal 30 has not successfully decoded the first data packet, the first terminal 20 triggers resource reselection after time n. This implementation is applicable to the case where the first terminal 20 does not send the first data packet to the second terminal 30 at time n.
- Step 4021 may be specifically implemented in the following manner: when the first terminal 20 determines that the second terminal has not successfully decoded the first data packet, the first terminal 20 triggers resource reselection at time n+X. Where X is the time interval between the first terminal 20 sending the first data packet and the first terminal 20 receiving the confirmation information fed back by the second terminal 30. This method is suitable for a process in which the first terminal 20 sends the first data packet to the first terminal 20 at time n, but does not receive the confirmation information sent by the second terminal 30.
- Step 4022 the first terminal 20 selects the second side uplink resource from the side uplink resource pool.
- the side-link resource pool in the embodiment of the present application may be: the side-link resource pre-configured by the first terminal 20.
- the first terminal 20 may select a side link resource for retransmission of data packets or a new transmission on the side link from the side link resource pool.
- the side link resource pool in the embodiment of the present application may be configured by the network device 10 for the first terminal 20 through a system message or dedicated signaling.
- Example 2 The manner in which the network device 10 schedules sidelink resources for the first terminal 20
- the method provided in the embodiment of the present application further includes:
- Step 403 The network device 10 sends a first configuration message to the first terminal 20.
- the first configuration message includes the side link resource associated with the side link HARQ process.
- the first configuration information includes information used to determine the position of the side link resource, and the HARQ process number corresponding to the side link resource.
- the network device 10 may actively send the first configuration message to the first terminal 20, and the network device 10 may also send the first configuration message to the first terminal 20 under the trigger of the first terminal 20.
- Step 404 The first terminal 20 receives the first configuration message from the network device 10.
- the first terminal in the embodiment of the present application obtains the side link resource used to retransmit the first data packet, which can be implemented in the following manner: the first terminal 20 associates the side link with the side link HARQ process The link resource is confirmed as the second side uplink resource.
- Example 2-1 The first terminal 20 triggers the network device 10 to send the first configuration message.
- the method provided in the embodiment of the present application may further include before step 403:
- Step 405a The first terminal 20 feeds back the first indication information to the network device 10.
- the first indication information indicates that the second terminal 30 has not successfully decoded the first data packet.
- the HARQ confirmation information of the Sidelink HARQ process m that the first terminal 20 feeds back to the network device 10 is NACK.
- the MAC layer of the first terminal 20 notifies the PHY layer that the confirmation information generated by the PHY layer is NACK, or the MAC layer generates the confirmation information as NACK and instructs the PHY layer to send it to the network device 10 by the PHY layer.
- Step 406 The network device 10 receives the first indication information from the first terminal 20.
- the first indication information is specifically used to indicate to the network device 10 that the first data packet of the side link HARQ has not been successfully decoded by the second terminal 30.
- the first indication information may be used to indicate the process number of the side-link HARQ and NACK, so that the network device 10 determines that the first data packet of the side-link HARQ has not been successfully decoded by the second terminal 30.
- step 405a when the first terminal 20 sends the first indication information to the network device 10, the network device 10 can be made to determine according to the first indication information that the second terminal 30 has not successfully decoded the first data packet. In this way, the network device 10 can subsequently allocate the second side link resource for retransmission to the first terminal 20.
- Example 2-2 The first terminal 20 does not trigger the network device 10 to send the first configuration message.
- the embodiment of the present application further includes before step 4025:
- Step 405b The first terminal 20 does not feed back the first indication information to the network device 10. In this way, the network device 10 does not receive the first indication information on the resource for feeding back the first indication information. If the first terminal 20 and the network device 10 negotiate in advance, and if the first terminal 20 determines that the first data packet has not been successfully decoded, it does not need to send the first instruction information to the network device 10, which saves the time required to transmit the first instruction information. Uplink resources. That is, if the first terminal 20 does not send the first indication information to the network device 10, the network device 10 may assume that the second terminal 30 has not successfully decoded the first data packet. In this way, the network device 10 can subsequently determine that the first terminal 20 needs to allocate the second side link resource for retransmission.
- the MAC layer of the first terminal 20 does not notify the PHY layer of the first terminal 20 to generate confirmation information, or the MAC layer of the first terminal 20 generates a NACK but does not indicate to the physical layer of the first terminal 20.
- Example 2-1 and Example 2-2), it is applicable to whether the first terminal 20 adopts the case 1 or case 2 method to determine that the first terminal 20 has not received the confirmation information from the second terminal 30.
- the first terminal 20 obtains the side link resource for retransmitting the first data packet, which can be specifically implemented in the following manner: the first terminal 20 associates the side link HARQ process with the side link
- the uplink resource is determined as the second side uplink resource.
- the first terminal 20 independently selects the second side link resource or the network device 10 configures the second side link resource for the first terminal 20, as shown in FIG. 5 or FIG. 6, the first terminal 20 in the embodiment of the present application It is determined that the second terminal 30 has not successfully decoded the first data packet, which can be implemented in the following ways:
- step 4021 is executed.
- the first condition includes any one or more of the following: the first side uplink logical channel in the first data packet is configured to require retransmission, wherein the first side uplink logical channel is the The side link logical channel with the highest priority in the first data packet.
- the first terminal is configured to need to retransmit; the first terminal 20 determines that the random number generated from the first preset range is greater than the first threshold.
- the first terminal 20 may determine that the first data packet needs to be retransmitted when determining that the first condition is satisfied.
- the first terminal 20 has a first threshold value
- the first threshold value may be configured by the network device 10 for the first terminal 20, or the first threshold value may also be configured in advance.
- the first preset range may be [0,1].
- the first threshold value may be configured by the network device 10 for the first terminal 20 through system information or dedicated signaling.
- the network device 10 may configure one piece of indication information for each side link logical channel of one or more side link logical channels of the first terminal 20.
- the indication information is used to indicate when the first terminal 20 sends the first data packet of the side link HARQ process m, that is, the SL MAC PDU, and the SL MAC PDU contains the MAC SDU of a certain side link logical channel, However, when the confirmation information of the side link HARQ process m fed back by the second terminal 30 is not received, whether the MAC SDU of the side link logical channel needs to be retransmitted.
- the first terminal 20 determines whether retransmission is needed or not according to the indication information that the highest priority side link logical channel in the SL MAC PDU of the side link HARQ process m is configured. judgment.
- the indication information can be configured through system information or dedicated signaling.
- the SL MAC PDU of the side link HARQ process includes the SL MAC SDU from one or more side link logical channels.
- the first side link logical channel is a side link logical channel with the highest priority among one or more side link logical channels.
- the indication information may be a third value or a fourth value, where the third value is used to indicate that the data packet on the side link logical channel needs to be transmitted.
- the fourth value is used to indicate that the data packet on the side link logical channel does not need to be transmitted.
- the network device 10 configures an indication information p for the first terminal 20, and the indication information p is used to indicate: when the first terminal sends the SL MAC PDU of the Sidelink HARQ process m, but does not receive the first terminal 20 When the second terminal 30 feeds back the confirmation information of the Sidelink HARQ process m, whether the SL MAC PDU needs to be retransmitted.
- the first terminal 20 determines whether retransmission is required or not required according to the instruction information p configured for the first terminal 20.
- the indication information p may be configured through system information or dedicated signaling.
- the indication information p may be a fifth value or a sixth value, where the fifth value is used to indicate that when the first terminal 20 does not receive the confirmation information fed back from the second terminal 30, the first terminal 20 needs to retransmit the data packet .
- the sixth value is used to indicate that when the first terminal 20 does not receive the confirmation information fed back from the second terminal 30, the first terminal 20 does not need to retransmit the data packet.
- implementation 1 determines whether to retransmit the data packets of side link HARQ process m in implementation 1 is based on the highest priority side line in the SL MAC PDU of side link HARQ process m Whether the link logical channel is configured for retransmission or does not require retransmission. That is, the data packet of the side link HARQ process m of the same first terminal 20 may need to be retransmitted, and the data packet of the side link HARQ process n of the first terminal 20 may not need to be retransmitted. That is, the side link logical channel with the highest priority in the SL MAC PDU of the side link HARQ process m is configured for retransmission. The side link logical channel with the highest priority in the SL MAC PDU of the side link HARQ process n is configured without retransmission.
- a first terminal 20 determines that the data packet needs to be retransmitted. If a first terminal 20 is configured to not need to retransmit the data packet, when the confirmation information from the second terminal 30 is not received, the first terminal 20 determines that there is no need to retransmit the data packet. That is, in implementation 2, if the first terminal is configured to retransmit, the data packets of multiple sidelink HARQ processes m of the same first terminal 20 are not successfully decoded by the second terminal 30. Need to be retransmitted. If the first terminal is configured to not need to retransmit, the data packets of multiple sidelink HARQ processes m of the same first terminal 20 do not need to be retransmitted if the second terminal 30 is not successfully decoded .
- Implementation mode 3 that is, when the first terminal sends the MAC PDU of the Sidelink HARQ process m, but does not receive the confirmation information of the Sidelink HARQ process m fed back by the second terminal 30, the first terminal is within the range of [0, 1] Generate a random number according to a uniform distribution. If the random number generated from the first preset range is less than the first threshold value, the first terminal determines that retransmission is not required; otherwise, it determines that retransmission is performed; or, if it is generated from the first preset range If the random number of is greater than the first threshold value, the first terminal 20 determines that retransmission is not required; otherwise, it determines that retransmission is performed.
- method 1 above can be applied to case 2.
- the first terminal 20 determines that the second terminal 30 has not successfully decoded the first data packet, which can be implemented in the following manner: the first terminal 20 determines that the first data packet is not sent to the second terminal 30, A terminal 20 determines that the second terminal 30 has not successfully decoded the first data packet.
- the first terminal 20 maintains a first variable for one or more sidelink HARQ processes of the first terminal 20, and the value of the first variable of any sidelink HARQ process is used to reflect the task. Whether the data packet of a side link HARQ process is successfully decoded. If the value of the first variable of a sidelink HARQ process is the first value, the first value is used to indicate that the second terminal 30 has not successfully decoded the data packet. If the value of the first variable of a sidelink HARQ process is the second value, the second value is used to indicate that the second terminal 30 successfully decodes the data packet.
- the foregoing embodiment mainly describes that when the first terminal 20 does not receive the confirmation information for the first data packet from the second terminal 30, if the first terminal 20 determines that the first data packet is not successfully decoded, the first terminal 20 The process of determining the second side link resource.
- the first terminal 20 receives the confirmation information for the first data packet from the second terminal 30.
- the method provided by the embodiment of the present application includes:
- Step 407 The first terminal 20 receives confirmation information for the first data packet from the second terminal 30, and the confirmation information indicates that the second terminal has not successfully decoded the first data packet.
- the first data packet is a data packet transmitted by the first terminal 20 on the first side uplink resource.
- the method provided in the embodiment of the present application further includes: the first terminal 20 sends the first data packet to the second terminal 30 on the first side uplink resource.
- the first terminal 20 receives the acknowledgement information for the first data packet from the second terminal 30 as NACK.
- Step 408 According to the confirmation information, the first terminal 20 determines that the second terminal 30 has not successfully decoded the first data packet.
- the first terminal 20 needs to trigger the second side uplink resource retransmission.
- the first terminal 20 sets the value of the first variable corresponding to the Sidelink HARQ process to the first value.
- the first terminal 20 sends the first indication information to the network device.
- the first terminal 20 sets the value of the first variable corresponding to the Sidelink HARQ process to the first value.
- step 402. if the first terminal 20 autonomously selects the second side link resource, step 402 can be specifically implemented through step 4021 and step 4022. As shown in FIG. 6, if the second side uplink resource is scheduled by the network device 10 for the first terminal 20, the first terminal 20 also needs to perform the above-mentioned step 405a, step 406, step 403, and step 404.
- the first terminal 20 determines that the second terminal 30 has not successfully decoded the first data packet
- the first data packet is transmitted through the Sindlink HARQ process.
- the method provided in this embodiment of the application further includes:
- Step 409 The first terminal 20 determines that the value of the first variable of the side link HARQ process is the first value.
- the first variable is used to record the confirmation information for the side link HARQ process fed back by the second terminal.
- the first terminal 20 When the first terminal 20 receives the confirmation information of the Sidelink HARQ process fed back by the second terminal 30 as NACK, the first terminal 20 sets the value of the first variable corresponding to the Sidelink HARQ process to the first value, and the first terminal 20 sends
- the HARQ confirmation information of the Sidelink HARQ process fed back by the network device 10 is NACK, or no NACK is fed back.
- the first terminal 20 When the first terminal 20 does not receive the sidelink HARQ process confirmation information fed back by the second terminal 30, if the first terminal 20 determines through the above method that the second terminal 30 has not successfully decoded the first data packet, the first terminal 20 automatically The value of the first variable corresponding to the Sidelink HARQ process is set to the first value, and the HARQ confirmation information of the Sidelink HARQ process fed back by the first terminal 20 to the network device 10 is NACK, or no NACK is fed back.
- step 409 in the embodiment of the present application can be implemented in the following manner:
- Implementation 2-1 When the MAC entity of the first terminal 20 determines that the Sidelink MAC PDU of the sidelink HARQ process cannot be transmitted, the MAC entity of the first terminal 20 automatically uses the value of the first variable of the sidelink HARQ process Set to the first value.
- Implementation 2-2 When the PHY layer of the first terminal 20 determines that the transmission of the physical sidelink shared channel (PSSCH) scheduled by the network device 10 at time n is not in progress, the PHY of the first terminal 20 The layer automatically generates NACK at time n+Y and delivers the NACK to the MAC entity. After receiving the NACK information, the MAC entity sets the value of the first variable of the corresponding Sidelink HARQ process to the first value. Wherein Y is the interval between the first terminal 20 sending the PSSCH and the second terminal 30 feeding back the corresponding ACK/NACK information through the physical sidelink feedback channel (PSFCH).
- PSSCH physical sidelink shared channel
- step 409 in the embodiment of the present application can be implemented in the following manner:
- Implementation 3-1 When the MAC entity of the first terminal 20 judges that the confirmation information of the Sidelink HARQ process is not received, the MAC entity of the first terminal 20 automatically sets the value of the first variable of the Sidelink HARQ process to the first value. Or the first terminal determines that the value of the first variable is set to the first value according to the first condition. That is, if the MAC entity of the first terminal 20 determines that the confirmation information of the Sidelink HARQ process has not been received, and the first data packet of the Sidelink HARQ process needs to be retransmitted, the MAC entity of the first terminal 20 automatically performs the Sidelink HARQ process The value of the first variable is set to the first value.
- the MAC entity of the first terminal 20 determines that the confirmation information of the Sidelink HARQ process has not been received, and the first data packet of the Sindlink HARQ process does not need to be retransmitted, the MAC entity of the first terminal 20 automatically sets the status of the Sindlink HARQ process.
- the value of the first variable is set to the second value.
- Implementation 3-2 After the PHY layer of the first terminal 20 transmits the first data packet of the sidelink HARQ process at time n, if the PHY layer of the first terminal 20 does not receive the confirmation information of the sidelink HARQ process at time n+X , The PHY layer of the first terminal 20 automatically generates a NACK, and delivers the NACK to the MAC entity of the first terminal 20. After receiving the NACK, the MAC entity of the first terminal 20 sets the value of the first variable of the corresponding sidelink HARQ process to the first value.
- the first terminal 20 determines that the first data packet is not successfully decoded
- the first terminal 20 determines the second side link resource process.
- the method provided in the embodiment of the present application may further include step 410, or as shown in FIG. 5, the method provided in the embodiment of the present application may further include step 411:
- Step 410 When the first terminal 20 determines that the second terminal 30 successfully decodes the first data packet, the first terminal 20 sends or does not send the second indication information to the network device 10.
- the second indication information is used to indicate that the second terminal 30 successfully decodes the first data packet.
- the second indication information may be ACK.
- the second indication information may also include information used to indicate the process number of the Sidelink HARQ process.
- step 410 when the first terminal 20 sends the second instruction information to the network device 10, the network device 10 can be made to determine that the second terminal 30 successfully decodes the first data packet according to the second instruction information. In this way, the network device 10 may no longer allocate the second side link resource for retransmission to the first terminal 20 subsequently.
- the network device 10 may assume that the second terminal 30 successfully decodes the first data packet. In this way, the network device 10 may not need to allocate the second side link resource for retransmission to the first terminal 20 subsequently.
- Step 411 When the first terminal 20 determines that the second terminal 30 successfully decodes the first data packet, the first terminal 20 releases the second side uplink resource.
- the second side link resource is a side link resource used to retransmit the first data packet; wherein, the second side link resource is allocated by the network device 10 or is used by the first terminal 20 Side link resources reserved in the side link resource pool.
- step 410 is applicable to the case where the network device 10 allocates side link resources to the first terminal 20, and step 411 is applicable to the case where the first terminal 20 autonomously selects the side link resources.
- step 407 can also be implemented in the following manner: when the first terminal 20 determines that the second terminal 30 successfully decodes the first data packet, the first terminal 20 transmits the second data packet on the second side uplink resource. That is, new transmission is performed on the second side uplink resource, or other data packets that have not been successfully decoded are transmitted.
- determining that the second terminal 30 successfully decodes the first data packet by the first terminal 20 includes: sending the first data packet to the second terminal 30 by the first terminal 20, but In the case that a terminal 20 does not receive the confirmation information from the second terminal 30, the first terminal 20 determines that the second terminal 30 successfully decodes the first data packet.
- the first terminal 20 may determine that the second terminal 30 successfully decodes the first data packet.
- the first terminal 20 sends the second terminal 30 to the second terminal 30.
- the first data packet but the first terminal 20 does not receive the confirmation information from the second terminal 30, the first terminal 20 determines that the second terminal 30 successfully decodes the first Data packet; wherein the second condition includes any one of the following: the first side uplink logical channel in the first data packet is configured to not require retransmission, wherein the first side uplink logical channel is The side link logical channel with the highest priority in the first data packet; the first terminal is configured to not require retransmission; the first terminal determines that the random number generated from the second preset range is less than the second threshold value.
- the first terminal 20 determines that when the first condition is not met, if the first terminal 20 sends the first data packet to the second terminal 30, but the first terminal 20 does not receive the data packet from the first terminal 20 In the case of the confirmation information of the second terminal 30, the first terminal 20 determines that the second terminal 30 successfully decodes the first data packet. That is, for case 2, if the first terminal 20 determines that the first data packet does not need to be retransmitted, the first terminal 20 determines that the second terminal 30 successfully decodes the first data packet.
- the first terminal 20 has a second threshold value
- the second threshold value may be configured by the network device 10 for the first terminal 20, or the second threshold value may also be pre-configured.
- the second preset range may be [0, 1].
- the second threshold value may be configured by the network device 10 for the first terminal 20 through system information or dedicated signaling.
- the second threshold value and the first threshold value may be the same or different.
- the first terminal 20 sends the first data packet to the second terminal 30, but the first terminal 20 does not receive the In the case of the confirmation information of the second terminal 30, the first terminal 20 determines that the second terminal 30 successfully decodes the first data packet.
- the first terminal 20 sends the first data packet to the second terminal 30, but the first terminal 20 does not receive the In the case of the confirmation information of the second terminal 30, the first terminal 20 determines that the second terminal 30 successfully decodes the first data packet.
- the first terminal is in [ Generate a random number in the range of 0,1] according to a uniform distribution. If the random number generated from the second preset range is greater than the second threshold, the first terminal 20 determines that no retransmission is required, and the first terminal 20 determines that the second terminal 30 successfully decodes the first data packet.
- the method provided in the embodiment of the present application as another embodiment of the present application, as shown in FIG. 5 or FIG. 6, the method provided in the embodiment of the present application further includes:
- Step 412 The first terminal 20 receives the confirmation information for the first data packet from the second terminal 30.
- the confirmation information indicates that the second terminal 30 successfully decodes the first data packet.
- the confirmation information in step 412 is ACK.
- Step 413 According to the confirmation information, the first terminal 20 determines that the second terminal 30 successfully decodes the first data packet.
- the first terminal 20 receives the confirmation information for the first data packet from the second terminal 30 in the embodiment of the present application, if the confirmation information indicates that the second terminal 30 successfully decodes the first data packet, for example, As shown in FIG. 5, the first terminal 20 also needs to perform step 410. As shown in FIG. 6, the first terminal also needs to perform step 411.
- the method provided in the embodiment of the present application further includes:
- Step 414 The first terminal 20 determines that the value of the first variable of the sidelink HARQ process is a second value, and the second value is used to indicate that the second terminal successfully decodes the first data packet.
- the first terminal 20 releases the second side link resource.
- the first terminal 20 sets the value of the first variable corresponding to the Sidelink HARQ process to the second value.
- the first terminal 20 sends second instruction information to the network device.
- the first terminal 20 sets the value of the first variable corresponding to the Sidelink HARQ process to the second value.
- steps 401, step 4021, step 4022, step 409 in the embodiment of the present application can be used as a separate embodiment to realize that the first terminal 20 does not receive the confirmation information and it is determined that the second terminal 30 is not successful
- the first terminal 20 obtains a scheme for retransmitting side link resources through an autonomous selection method.
- steps 401, 405a, step 405b, step 406, step 403, step 404, step 402, and step 409 in the embodiment of this application can be used as a separate embodiment to realize that the first terminal 20 does not receive
- the confirmation information is reached, and it is determined that the second terminal 30 has not successfully decoded the first data packet
- the first terminal 20 reacquires the scheme of retransmitting the side link resource through the scheduling of the network device 10.
- Step 401, step 411, and step 414 in the embodiment of this application can be used as a separate embodiment to realize that when the first terminal 20 does not receive the confirmation information and it is determined that the second terminal 30 successfully decodes the first data packet, if A solution in which a terminal receives the second side uplink resource for retransmitting the first data packet again, and releases the second side uplink resource.
- Step 401, step 410, step 411, and step 414 in the embodiment of this application can be used as a separate embodiment to realize when the first terminal 20 does not receive the confirmation information and it is determined that the second terminal 30 successfully decodes the first data packet If the first terminal again receives the second side uplink resource for retransmitting the first data packet, the solution of releasing the second side uplink resource.
- Step 407, step 408, step 4021, step 4022, step 409, or () in the embodiment of this application can be used as a separate embodiment to realize that the first terminal 20 receives the confirmation information and determines that the second terminal 30 is not When the first data packet is successfully decoded, the first terminal 20 obtains a scheme for retransmitting the side link resources through an autonomous selection method.
- Step 412, step 413, step 411, and step 414 in the embodiment of the present application can be used as a separate embodiment to realize that when the first terminal 20 receives the confirmation information and determines that the second terminal 30 successfully decodes the first data packet, If the first terminal again receives the second side uplink resource for retransmitting the first data packet, the solution of releasing the second side uplink resource.
- Step 407, step 408, step 405a, step 405b, step 406, step 403, step 404, step 402, and step 409 in the embodiment of the present application can be used as a separate embodiment to realize that the first terminal 20 receives the confirmation information , And when it is determined that the second terminal 30 has not successfully decoded the first data packet, the first terminal 20 reacquires the scheme of retransmitting the side link resources through the scheduling method of the network device 10.
- Step 412, step 413, step 410, step 411, and step 414 in the embodiment of the present application can be used as a separate embodiment to realize that the first terminal 20 receives the confirmation information and determines that the second terminal 30 successfully decodes the first data During the packet, if the first terminal again receives the second side uplink resource for retransmitting the first data packet, the solution of releasing the second side uplink resource.
- unmanned driving unmanned driving
- autonomous driving ADS
- driver assistance/ADAS driver assistance/ADAS
- intelligent driving intelligent driving
- connected driving intelligent network driving, car sharing.
- each network element such as the first terminal, includes hardware structures and/or software modules corresponding to each function.
- the present application can be implemented in the form of hardware or a combination of hardware and computer software. Whether a certain function is executed by hardware or computer software-driven hardware depends on the specific application and design constraint conditions of the technical solution. Professionals and technicians can use different methods for each specific application to implement the described functions, but such implementation should not be considered beyond the scope of this application.
- the first terminal may divide the functional units according to the foregoing method example.
- each functional unit may be divided corresponding to each function, or two or more functions may be integrated into one processing unit.
- the above-mentioned integrated unit can be implemented in the form of hardware or software functional unit. It should be noted that the division of units in the embodiments of the present application is illustrative, and is only a logical function division, and there may be other division methods in actual implementation.
- the method of the embodiment of the present application is described above with reference to FIG. 1 to FIG. 6, and the device for determining the side link resource for executing the foregoing method provided in the embodiment of the present application is described below. Those skilled in the art can understand that the method and the device can be combined and referenced with each other.
- the device for determining the side link resource provided in the embodiment of the present application can perform the steps performed by the first terminal in the above method for determining the side link resource.
- FIG. 7 shows an apparatus for determining side link resources involved in the foregoing embodiment, and the apparatus for determining side link resources may include: a processing unit 101.
- the device may further include a communication unit 102.
- the device for determining the side link resource is the first terminal or a chip applied to the first terminal.
- the processing unit 101 is configured to support the device for determining the side link resource to execute steps 401 and 402 in FIG. 4 by the first terminal in the foregoing embodiment.
- the processing unit 101 is further configured to support the device for determining side link resources to execute step 4021, step 4022, step 407, step 408, step 412, Step 413, step 409, step 411, step 414, step 409, step 410.
- the communication unit 102 is configured to support the device for determining the side link resource to execute step 405a, step 404, and step 405b in the foregoing embodiment by the first terminal.
- FIG. 8 shows a schematic diagram of a possible logical structure of the apparatus for determining side link resources involved in the foregoing embodiment.
- the device for determining the side link resource includes: a processing module 112 and a communication module 113.
- the processing module 112 is configured to control and manage the actions of the device for determining the side link resource.
- the processing module 112 is configured to perform information/data processing steps on the device for determining the side link resource.
- the communication module 113 is configured to support the steps of information/data sending or receiving by the device for determining the side link resource.
- the device for determining the side link resource may further include a storage module 111 for storing program codes and data that can be used by the device for determining the side link resource.
- the device for determining the side link resource is the first terminal or a chip applied to the first terminal.
- the processing module 112 is configured to support the device for determining the side link resource to execute steps 401 and 402 in FIG. 4 by the first terminal in the foregoing embodiment.
- the processing module 112 is further configured to support the device for determining the side link resource to execute step 4021, step 4022, step 407, step 408, step 412, Step 413, step 409, step 411, step 414, step 409, step 410.
- the communication module 113 is configured to support the device for determining the side link resource to execute step 405a, step 404, and step 405b in the foregoing embodiment by the first terminal.
- the processing module 112 may be a processor or a controller, for example, a central processing unit, a general-purpose processor, a digital signal processor, an application specific integrated circuit, a field programmable gate array or other programmable logic devices, transistor logic devices, Hardware components or any combination thereof. It can implement or execute various exemplary logical blocks, modules and circuits described in conjunction with the disclosure of this application.
- the processor may also be a combination of computing functions, for example, a combination of one or more microprocessors, a combination of a digital signal processor and a microprocessor, and so on.
- the communication module 113 may be a transceiver, a transceiver circuit, or a communication interface.
- the storage module 111 may be a memory.
- the processing module 112 is the processor 41 or the processor 45
- the communication module 113 is the transceiver 43
- the storage module 111 is the memory 42
- the device for determining the side link resource involved in this application may be the one shown in FIG. 2 communication device.
- the communication device shown in FIG. 2 is the first terminal or a chip applied to the first terminal.
- the processor 41 and the processor 45 are configured to support the communication device as shown in FIG. 2 to execute the steps 401 and 402 in FIG. 4 by the first terminal in the foregoing embodiment.
- the processor 41 and the processor 45 are further configured to support the communication device as shown in FIG. 2 to execute step 4021, step 4022, step 407, and step 408 in the foregoing embodiment by the first terminal. , Step 412, step 413, step 409, step 411, step 414, step 409, step 410.
- the transceiver 43 is used to support the communication device shown in FIG. 2 to execute steps 405a, step 404, and step 405b by the first terminal in the foregoing embodiment.
- FIG. 9 is a schematic structural diagram of a chip 150 provided by an embodiment of the present application.
- the chip 150 includes one or more (including two) processors 1510 and a communication interface 1530.
- the chip 150 further includes a memory 1540.
- the memory 1540 may include a read-only memory and a random access memory, and provides operation instructions and data to the processor 1510.
- a part of the memory 1540 may also include a non-volatile random access memory (NVRAM).
- NVRAM non-volatile random access memory
- the memory 1540 stores the following elements, execution modules or data structures, or their subsets, or their extended sets.
- the corresponding operation is executed by calling the operation instruction stored in the memory 1540 (the operation instruction may be stored in the operating system).
- One possible implementation manner is that the structure of the chip used by the first terminal is similar, and different devices may use different chips to realize their respective functions.
- the processor 1510 controls processing operations of any one of the first terminals.
- the processor 1510 may also be referred to as a central processing unit (central processing unit, CPU).
- the memory 1540 may include a read-only memory and a random access memory, and provides instructions and data to the processor 1510. A part of the memory 1540 may also include NVRAM.
- the memory 1540, the communication interface 1530, and the memory 1540 are coupled together through a bus system 1520, where the bus system 1520 may include a power bus, a control bus, and a status signal bus in addition to a data bus.
- the bus system 1520 may include a power bus, a control bus, and a status signal bus in addition to a data bus.
- various buses are marked as the bus system 1520 in FIG. 9.
- the methods disclosed in the foregoing embodiments of the present application may be applied to the processor 1510 or implemented by the processor 1510.
- the processor 1510 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by hardware integrated logic circuits in the processor 1510 or instructions in the form of software.
- the aforementioned processor 1510 may be a general-purpose processor, a digital signal processing (digital signal processing, DSP), an ASIC, an off-the-shelf programmable gate array (field-programmable gate array, FPGA), or other programmable logic devices, discrete gates or transistors. Logic devices, discrete hardware components.
- DSP digital signal processing
- ASIC application-the-shelf programmable gate array
- FPGA field-programmable gate array
- Logic devices discrete hardware components.
- the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
- the steps of the method disclosed in the embodiments of the present application may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
- the software module can be located in a mature storage medium in the field such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
- the storage medium is located in the memory 1540, and the processor 1510 reads the information in the memory 1540, and completes the steps of the foregoing method in combination with its hardware.
- the communication interface 1530 is used to perform the receiving and sending steps of the first terminal in the embodiment shown in FIGS. 4-6.
- the processor 1510 is configured to execute the processing steps of the first terminal in the embodiment shown in FIGS. 4-6.
- the above communication unit may be a communication interface of the device for receiving signals from other devices.
- the communication unit is a communication interface for the chip to receive signals or send signals from other chips or devices.
- the embodiment of the present application provides a computer-readable storage medium.
- the computer-readable storage medium stores instructions. When the instructions are executed, the functions of the first terminal in FIG. 4, FIG. 5, or FIG. 6 are realized.
- the embodiment of the present application provides a computer program product including instructions.
- the computer program product includes instructions. When the instructions are executed, the functions of the first terminal in FIG. 4, FIG. 5, or FIG. 6 are realized.
- An embodiment of the present application provides a chip, which is applied to a first terminal.
- the chip includes at least one processor and a communication interface.
- the communication interface is coupled to the at least one processor.
- the processor is used to execute instructions to implement 5.
- An embodiment of the present application provides a communication system that includes a first terminal, a second terminal, and a network device 10, where the first terminal is used to perform the steps performed by the first terminal in FIG. 4 to FIG. 6, and the network device 10 is used to execute the steps performed by the network device 10 in FIG. 4 to FIG. 6.
- the computer program product includes one or more computer programs or instructions.
- the computer may be a general-purpose computer, a dedicated computer, a computer network, network equipment, user equipment, or other programmable devices.
- the computer program or instruction may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
- the computer program or instruction may be transmitted from a website, computer, The server or data center transmits to another website site, computer, server or data center through wired or wireless means.
- the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that integrates one or more available media.
- the usable medium may be a magnetic medium, such as a floppy disk, a hard disk, or a magnetic tape; it may also be an optical medium, such as a digital video disc (digital video disc, DVD); it may also be a semiconductor medium, such as a solid state drive (solid state drive). , SSD).
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Computer Networks & Wireless Communication (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
本申请实施例提供一种确定侧行链路资源的方法、装置以及系统,涉及通信技术领域。用以在第一终端未接收到第二终端针对第一数据包的确认信息的情况下,提高侧行链路数据传输的可靠性。该方法可以在第一终端确定未接收到来自第二终端反馈的针对第一数据包的确认信息的情况下,如果第一终端确定第二终端未成功解码第一数据包,则确定重新传输第一数据包的侧行链路资源。这样可以在重新确定的侧行链路资源上重新传输第一数据包,从而提高了侧行链路传输的可靠性。该方案可以适用于无人驾驶、自动驾驶、辅助驾驶、智能驾驶、网联驾驶、智能网联驾驶、汽车共享、人工智能等领域。
Description
本申请要求于2019年08月16日提交国家知识产权局、申请号为201910760444.8、申请名称为“一种确定侧行链路资源的方法、装置以及系统”的中国专利申请的优先权,其全部内容通过引用结合在本申请中。
本申请实施例涉及通信技术领域,尤其涉及一种确定侧行链路资源的方法、装置以及系统。
在长期演进(long time evolution,LTE)系统或新空口(new radio,NR)系统中,终端之间的通信接口可以称为PC5接口。PC5接口一般用于车辆对一切(vehicle-to-everything,V2X),或者D2D等可以在设备间进行直联通信的场景。在PC5接口上,TX终端可以通过侧行链路(Sidelink,SL)向RX终端传输侧行链路数据。为了保证侧行链路数据传输的可靠性,RX终端可以向TX终端发送混合自动重复请求(hybrid autonomous repeat request,HARQ)信息。该HARQ信息用于指示侧行链路数据是否被成功解码。
TX终端在接收到该HARQ信息之后,如果确定HARQ信息指示侧行链路数据未被成功解码,则TX终端可以重新确定重新传输该侧行链路数据的侧行链路资源。
但是,TX终端可能存在无法接收到RX终端反馈的HARQ信息的情况,因此,在TX终端未接收到RX终端反馈的HARQ信息的情况下,TX终端如何处理该未被成功接收到的侧行链路数据的后续的数据传输是亟需解决的技术问题。
发明内容
本申请实施例提供一种确定侧行链路资源的方法、装置以及系统,用以在第一终端未接收到第二终端针对第一数据包的确认信息的情况下,提高侧行链路数据传输的可靠性。
为了达到上述目的,本申请实施例提供如下技术方案:
第一方面,本申请实施例提供一种确定侧行链路资源的方法,包括:第一通信装置确定未接收到来自第二通信装置的针对第一数据包的确认信息。该确认信息用于指示第二通信装置是否成功解码第一数据包。第一数据包为第一通信装置在第一侧行链路资源上传输的数据包。在第一通信装置确定第二通信装置未成功解码第一数据包的情况下,第一通信装置获取用于重新传输第一数据包的第二侧行链路资源。
示例性的,第一通信装置可以为第一终端或者设置于第一终端内的芯片,第二通信装置可以为第二终端或者设置于第二终端内的芯片。
本申请实施例提供一种确定侧行链路资源的方法,由于在实际过程中,第一通信装置可能存在未向第二通信装置发送第一数据包的情况,或者第一通信装置向第二通信装置发送了第一数据包,但是由于信道质量原因,第二通信装置反馈了确认信息但是第一通信装置未接收到确认信息的情况,现有技术中并未涉及第一通信装置在确定 未收到确认信息时,如果处理后续数据传输问题,这样可能会导致侧行链路传输的可靠性降低,因此,本申请实施例中第一通信装置确定未接收到来自第二通信装置的针对第一数据包的确认信息时,如果第一通信装置确定第二通信装置未成功解码第一数据包,则第一通信装置重新获取用于传输第一数据包的第二侧行链路资源,这样便于第一通信装置后续在第二侧行链路资源上重新传输第一数据包,可以提高侧行链路传输的可靠性。
结合第一方面,在第一方面的第一种可能的实现方式中,第一通信装置获取用于重新传输第一数据包的侧行链路资源,包括:第一通信装置触发第一数据包关联的侧行链路混合自动重复请求HARQ进程的资源重选。第一通信装置从侧行链路资源池中选择第二侧行链路资源。这样第一通信装置可以自主选择第二侧行链路资源。
结合第一方面或第一方面的第一种可能的实现方式,在第一方面的第二种可能的实现方式中,第一通信装置触发第一数据包关联的侧行链路混合自动重复请求HARQ进程的资源重选,包括:第一通信装置确定在n时刻未向第二通信装置发送第一数据包时,第一通信装置在n时刻触发资源重选。应理解,如果第一通信装置确定在n时刻未向第二通信装置发送第一数据包便可以确定第二通信装置未成功解码所述第一数据包,因此第一通信装置在n时刻触发资源重选。即第一通信装置一旦确定在应该发送第一数据包的时刻未发送第一数据包,便可以触发资源重选,这样可以保证尽快通过重选的侧行链路资源重新发送第一数据包。n时刻为所述第一通信装置发送第一数据包的时刻。
结合第一方面至第一方面的第二种可能的实现方式,在第一方面的第三种可能的实现方式中,第一通信装置触发第一数据包关联的侧行链路混合自动重复请求HARQ进程的资源重选,包括:第一通信装置在n+X时刻触发资源重选,其中,X为第一通信装置发送第一数据包的时间和第一通信装置接收第二通信装置反馈的确认信息的时间间隔。这样便于第一通信装置确定自主选择第二侧行链路资源的时机。
结合第一方面至第一方面的第三种可能的实现方式,在第一方面的第四种可能的实现方式中,第一通信装置获取用于重新传输第一数据包的侧行链路资源,包括:第一通信装置接收来自网络设备的第一配置消息。该第一配置消息包括与侧行链路HARQ进程关联的侧行链路资源。第一通信装置将侧行链路HARQ进程关联的侧行链路资源确定为第二侧行链路资源。第一通信装置可以通过网络设备调度方式确定用于重传的第二侧行链路资源。
结合第一方面至第一方面的第四种可能的实现方式,在第一方面的第五种可能的实现方式中,本申请实施例提供的方法还包括:第一通信装置向网络设备反馈第一指示信息,或者,第一通信装置不向网络设备反馈第一指示信息。第一指示信息指示第二通信装置未成功解码第一数据包。通过反馈第一指示信息可以使得网络设备根据第一指示信息确定第二通信装置未成功解码第一数据包,进而判断需要为第一通信装置分配用于重传的第二侧行链路资源。如果第一通信装置和网络设备之间提前协商,如果第二通信装置未成功解码第一数据包时,则可以不用反馈第一指示信息,这样如果网络设备确定未接收到来自第一通信装置的第一指示信息,便可以确定第二通信装置未成功解码第一数据包,进而判断需要为第一通信装置20分配用于重传的第二侧行链 路资源。
结合第一方面至第一方面的第五种可能的实现方式,在第一方面的第六种可能的实现方式中,第一通信装置确定第二通信装置未成功解码第一数据包,包括:在第一通信装置向第二通信装置发送第一数据包,但第一通信装置未接收到来自第二通信装置的确认信息的情况下,第一通信装置确定第二通信装置未成功解码第一数据包。
结合第一方面至第一方面的第六种可能的实现方式,在第一方面的第七种可能的实现方式中,在满足第一条件时,且在第一通信装置向第二通信装置发送第一数据包,但第一通信装置未接收到来自第二通信装置的确认信息的情况下,第一通信装置确定第二通信装置未成功解码第一数据包;其中,第一条件,包括以下中的任一个或多个:第一数据包中的第一侧行链路逻辑信道被配置为需要重传,其中,第一侧行链路逻辑信道为第一数据包中的优先级最高的侧行链路逻辑信道;第一通信装置被配置为需要重传;第一通信装置从第一预设范围内生成的随机数大于第一门限值。
结合第一方面至第一方面的第七种可能的实现方式,在第一方面的第八种可能的实现方式中,第一通信装置确定侧行链路HARQ进程的第一变量的值为第一值,第一值用于表示第二通信装置未成功解码第一数据包。本申请实施例提供的方法还包括:第一通信装置确定侧行链路HARQ进程的第一变量的值为第一值,该第一值用于表示第二通信装置未成功解码第一数据包。
需要说明的是,本申请实施例中第一方面提供的方法还可以包括:第二方面、第三方面以及第四方面所描述的方案。
第二方面,本申请实施例提供一种确定侧行链路资源的方法,包括:第一通信装置接收来自第二通信装置的针对第一数据包的指示第二通信装置未成功解码第一数据包的确认信息。第一通信装置根据确认信息,确定第二通信装置未成功解码第一数据包。在第一通信装置确定第二通信装置未成功解码第一数据包的情况下,第一通信装置获取用于重新传输第一数据包的第二侧行链路资源。
结合第二方面,在第二方面的第一种可能的实现方式中,第一通信装置确定侧行链路HARQ进程的第一变量的值为第一值,第一值用于表示第二通信装置未成功解码第一数据包。本申请实施例提供的方法还包括:第一通信装置确定侧行链路HARQ进程的第一变量的值为第一值,该第一值用于表示第二通信装置未成功解码第一数据包。
第二方面中第一通信装置获取用于重新传输第一数据包的第二侧行链路资源的方式可以参考第一方面中的描述,此处不再赘述。
需要说明的是,本申请实施例中第二方面提供的方法还可以包括:第一方面、第三方面以及第四方面所描述的方案。
第三方面,本申请实施例提供一种确定侧行链路资源的方法,包括:第一通信装置确定未接收到来自第二通信装置的针对第一数据包的确认信息。该确认信息用于指示第二通信装置是否成功解码第一数据包。在第一通信装置确定第二通信装置成功解码第一数据包的情况下,第一通信装置执行下述步骤中的任一个:第一通信装置向网络设备发送或不发送第二指示信息,第二指示信息用于指示第二通信装置成功解码第一数据包。或者第一通信装置释放第二侧行链路资源,第二侧行链路资源为用于重新传输第一数据包的侧行链路资源;其中,第二侧行链路资源由网络设备分配,或者为 第一通信装置在侧行链路资源池中预留的侧行链路资源。
结合第三方面,在第三方面的第一种可能的实现方式中,第一通信装置确定第二通信装置成功解码第一数据包,包括:在第一通信装置向第二通信装置发送第一数据包,但第一通信装置未接收到来自第二通信装置的确认信息的情况下,该第一通信装置确定第二通信装置成功解码第一数据包。
结合第三方面,或第三方面的第一种可能的实现方式,在第三方面的第二种可能的实现方式中,在满足第二条件时,且在第一通信装置向第二通信装置发送第一数据包,但第一通信装置未接收到来自第二通信装置的确认信息的情况下,第一通信装置确定第二通信装置成功解码第一数据包;其中,第二条件包括以下任一个:第一数据包中的第一侧行链路逻辑信道被配置为不需要重传,其中,第一侧行链路逻辑信道为第一数据包中的优先级最高的侧行链路逻辑信道;第一通信装置被配置为不需要重传;第一通信装置确定从第二预设范围内生成的随机数小于第二门限值。
结合第三方面至第三方面的第二种可能的实现方式,在第三方面的第三种可能的实现方式中,第一数据包通过侧行链路混合自动重复请求HARQ进程传输,本申请实施例提供的方法还包括:第一通信装置确定侧行链路HARQ进程的第一变量的值为第二值,第二值用于表示第二通信装置成功解码第一数据包。
需要说明的是,本申请实施例中第三方面提供的方法还可以包括:第一方面、第二方面以及第四方面所描述的方案。
第四方面,本申请实施例提供一种确定侧行链路资源的方法,包括:第一通信装置接收来自第二通信装置的针对第一数据包的确认信息。该确认信息指示第二通信装置成功解码第一数据包。第一通信装置根据确认信息,确定第二通信装置成功解码第一数据包。第一通信装置执行下述步骤中的任一个:第一通信装置向网络设备发送或不发送第二指示信息,第二指示信息用于指示第二通信装置成功解码第一数据包。或者第一通信装置释放第二侧行链路资源,第二侧行链路资源为用于重新传输第一数据包的侧行链路资源;其中,第二侧行链路资源由网络设备分配,或者为第一通信装置在侧行链路资源池中预留的侧行链路资源。
结合第四方面,在第四方面的第一种可能的实现方式中,第一数据包通过侧行链路混合自动重复请求HARQ进程传输,本申请实施例提供的方法还包括:第一通信装置确定侧行链路HARQ进程的第一变量的值为第二值,第二值用于表示第二通信装置成功解码第一数据包。
需要说明的是,本申请实施例中第四方面提供的方法还可以包括:第一方面、第二方面以及第三方面所描述的方案。也即第一方面、第二方面、第三方面以及第四方面所描述的各个方案可以组合。
第五方面,本申请实施例提供一种通信装置,该通信装置可以实现第一方面或第一方面的任意可能的实现方式中的方法,因此也能实现第一方面或第一方面任意可能的实现方式中的有益效果。该通信装置可以为第一终端,也可以为可以支持第一终端实现第一方面或第一方面的任意可能的实现方式中的方法的装置,例如应用于第一终端中的芯片。该装置可以通过软件、硬件、或者通过硬件执行相应的软件实现上述方法。
一种示例,本申请实施例提供一种通信装置,包括:通信单元和处理单元,其中,通信单元可以是收发器也可以是包括一个或多个具有收发信息功能的模块,处理单元可以是处理器也可以是包括一个或多个具有处理功能的模块。下述以处理单元和通信为例描述。
其中,处理单元用于确定通信单元未接收到来自第二终端的针对第一数据包的确认信息。该确认信息用于指示第二终端是否成功解码第一数据包。第一数据包为第一终端在第一侧行链路资源上传输的数据包。在确定第二终端未成功解码第一数据包的情况下,处理单元,用于获取用于重新传输第一数据包的第二侧行链路资源。
结合第五方面,在第五方面的第一种可能的实现方式中,处理单元,用于获取用于重新传输第一数据包的侧行链路资源,包括:处理单元,用于触发第一数据包关联的侧行链路HARQ进程的资源重选。处理单元,用于从侧行链路资源池中选择第二侧行链路资源。
结合第五方面或第五方面的第一种可能的实现方式中,在第五方面的第二种可能的实现方式中,处理单元,用于触发第一数据包关联的侧行链路HARQ进程的资源重选,包括:处理单元,用于确定在n时刻通信单元未向第二终端发送第一数据包时,处理单元,用于在n时刻触发资源重选。
结合第五方面至第五方面的第二种可能的实现方式中,在第五方面的第三种可能的实现方式中,处理单元,用于触发第一数据包关联的侧行链路混合自动重复请求HARQ进程的资源重选,包括:处理单元,用于在n+X时刻触发资源重选,其中,X为通信单元发送第一数据包的时间和通信单元接收第二终端反馈的确认信息的时间间隔。
结合第五方面至第五方面的第三种可能的实现方式中,在第五方面的第四种可能的实现方式中,处理单元,用于获取用于重新传输第一数据包的侧行链路资源,包括:通信单元,用于接收来自网络设备的第一配置消息。相应的,处理单元,用于根据第一配置消息确定用于重新传输第一数据包的侧行链路资源。
结合第五方面至第五方面的第四种可能的实现方式中,在第五方面的第五种可能的实现方式中,通信单元,还用于向网络设备反馈第一指示信息,或者,通信单元,还用于不向网络设备反馈第一指示信息。第一指示信息指示第二终端未成功解码第一数据包。
结合第五方面至第五方面的第五种可能的实现方式中,在第五方面的第六种可能的实现方式中,处理单元,用于确定第二终端未成功解码第一数据包为:在通信单元用于向第二终端发送第一数据包,但通信单元用于未接收到来自第二终端的确认信息的情况下,处理单元,用于确定第二终端未成功解码第一数据包。
结合第五方面至第五方面的第六种可能的实现方式中,在第五方面的第七种可能的实现方式中,在满足第一条件时,且在通信单元用于向第二终端发送第一数据包,但通信单元用于未接收到来自第二终端的确认信息的情况下,处理单元,用于确定第二终端未成功解码第一数据包;其中,第一条件,包括以下中的任一个或多个:第一数据包中的第一侧行链路逻辑信道被配置为需要重传,其中,第一侧行链路逻辑信道为第一数据包中的优先级最高的侧行链路逻辑信道;该装置被配置为需要重传;处理 单元确定从第一预设范围内生成的随机数大于第一门限值。
结合第五方面至第七方面的第三种可能的实现方式中,在第五方面的第八种可能的实现方式中,处理单元,用于确定侧行链路HARQ进程的第一变量的值为第一值,第一值用于表示第二终端未成功解码第一数据包。处理单元,还用于确定侧行链路HARQ进程的第一变量的值为第一值,该第一值用于表示第二终端未成功解码第一数据包。
需要说明的是,本申请实施例中第五方面提供的装置还可以包括:第六方面、第七方面以及第八方面所描述的方案。
另一种示例,本申请实施例提供一种通信装置,该通信装置可以是第一终端,也可以是第一终端内的芯片。当该通信装置是第一终端时,该通信单元可以为收发器。该处理单元可以是处理器。该通信装置还可以包括存储单元。该存储单元可以是存储器。该存储单元,用于存储计算机程序代码,计算机程序代码包括指令。该处理单元执行该存储单元所存储的指令,以使该第一终端实现第一方面或第一方面的任意一种可能的实现方式中描述的一种确定侧行链路资源的方法。当该通信装置是第一终端内的芯片时,该处理单元可以是处理器,该通信单元可以统称为:通信接口。例如,通信接口可以为输入/输出接口、管脚或电路等。该处理单元执行存储单元所存储的计算机程序代码,以使该第一终端实现第一方面或第一方面的任意一种可能的实现方式中描述的一种确定侧行链路资源的方法,该存储单元可以是该芯片内的存储单元(例如,寄存器、缓存等),也可以是该第一终端内的位于该芯片外部的存储单元(例如,只读存储器、随机存取存储器等)。
可选的,处理器、收发器和存储器相互耦合。
第六方面,本申请实施例提供一种通信装置,该通信装置可以实现第二方面或第二方面的任意可能的实现方式中的方法,因此也能实现第二方面或第二方面任意可能的实现方式中的有益效果。该通信装置可以为第一终端,也可以为可以支持第一终端实现第二方面或第二方面的任意可能的实现方式中的方法的装置,例如应用于第一终端中的芯片。该装置可以通过软件、硬件、或者通过硬件执行相应的软件实现上述方法。
一种示例,本申请实施例提供一种通信装置,包括:通信单元和处理单元,其中,通信单元可以是收发器也可以是包括一个或多个具有收发信息功能的模块,处理单元可以是处理器也可以是包括一个或多个具有处理功能的模块。下述以处理单元和通信为例描述。
其中,通信单元,用于接收来自第二终端的针对第一数据包的指示第二终端未成功解码第一数据包的确认信息。处理单元,用于根据确认信息,确定第二终端未成功解码第一数据包。在确定第二终端未成功解码第一数据包的情况下,处理单元,用于获取用于重新传输第一数据包的第二侧行链路资源。
结合第六方面,在第六方面的第一种可能的实现方式中,处理单元,用于确定侧行链路HARQ进程的第一变量的值为第一值,第一值用于表示第二终端未成功解码第一数据包。处理单元,还用于确定侧行链路HARQ进程的第一变量的值为第一值,该第一值用于表示第二终端未成功解码第一数据包。
需要说明的是,本申请实施例中第六方面提供的装置还可以包括:第五方面、第七方面以及第八方面所描述的方案。
第六方面中处理单元,用于获取用于重新传输第一数据包的第二侧行链路资源的方式可以参考第五方面中的描述,此处不再赘述。
另一种示例,本申请实施例提供一种通信装置,该通信装置可以是第一终端,也可以是第一终端内的芯片。当该通信装置是第一终端时,该通信单元可以为收发器。该处理单元可以是处理器。该通信装置还可以包括存储单元。该存储单元可以是存储器。该存储单元,用于存储计算机程序代码,计算机程序代码包括指令。该处理单元执行该存储单元所存储的指令,以使该第一终端实现第二方面或第二方面的任意一种可能的实现方式中描述的一种确定侧行链路资源的方法。当该通信装置是第一终端内的芯片时,该处理单元可以是处理器,该通信单元可以统称为:通信接口。例如,通信接口可以为输入/输出接口、管脚或电路等。该处理单元执行存储单元所存储的计算机程序代码,以使该第一终端实现第二方面或第二方面的任意一种可能的实现方式中描述的一种确定侧行链路资源的方法,该存储单元可以是该芯片内的存储单元(例如,寄存器、缓存等),也可以是该第一终端内的位于该芯片外部的存储单元(例如,只读存储器、随机存取存储器等)。
可选的,处理器、收发器和存储器相互耦合。
第七方面,本申请实施例提供一种通信装置,该通信装置可以实现第三方面或第三方面的任意可能的实现方式中的方法,因此也能实现第三方面或第三方面任意可能的实现方式中的有益效果。该通信装置可以为第一终端,也可以为可以支持第一终端实现第三方面或第三方面的任意可能的实现方式中的方法的装置,例如应用于第一终端中的芯片。该装置可以通过软件、硬件、或者通过硬件执行相应的软件实现上述方法。
一种示例,本申请实施例提供一种通信装置,包括:通信单元和处理单元,其中,通信单元可以是收发器也可以是包括一个或多个具有收发信息功能的模块,处理单元可以是处理器也可以是包括一个或多个具有处理功能的模块。下述以处理单元和通信为例描述。
其中,处理单元,用于确定未接收到来自第二终端的针对第一数据包的确认信息。该确认信息用于指示第二终端是否成功解码第一数据包。在确定第二终端成功解码第一数据包的情况下,处理单元,用于执行下述步骤中的任一个:通过通信单元向网络设备发送或不发送第二指示信息,第二指示信息用于指示第二终端成功解码第一数据包。或者处理单元,用于释放第二侧行链路资源,第二侧行链路资源为用于重新传输第一数据包的侧行链路资源;其中,第二侧行链路资源由网络设备分配,或者为处理单元在侧行链路资源池中预留的侧行链路资源。
结合第七方面,在第七方面的第一种可能的实现方式中,处理单元,用于确定第二终端成功解码第一数据包为:在通信单元向第二终端发送第一数据包,但通信单元未接收到来自第二终端的确认信息的情况下,该处理单元,用于确定第二终端成功解码第一数据包。
作为一种可能的实现方式,在满足第二条件时,且在通信单元向第二终端发送第 一数据包,但通信单元未接收到来自第二终端的确认信息的情况下,处理单元确定第二终端成功解码第一数据包;其中,第二条件包括以下任一个:第一数据包中的第一侧行链路逻辑信道被配置为不需要重传,其中,第一侧行链路逻辑信道为第一数据包中的优先级最高的侧行链路逻辑信道;该装置被配置为不需要重传;处理单元确定从第二预设范围内生成的随机数小于第二门限值。
作为一种可能的实现方式,第一数据包通过侧行链路HARQ进程传输,本申请实施例提供的处理单元,还用于确定侧行链路HARQ进程的第一变量的值为第二值,第二值用于表示第二终端成功解码第一数据包。
需要说明的是,本申请实施例中第七方面提供的装置还可以用于执行:第五方面、第六方面以及第八方面所描述的方案。
另一种示例,本申请实施例提供一种通信装置,该通信装置可以是第一终端,也可以是第一终端内的芯片。当该通信装置是第一终端时,该通信单元可以为收发器。该处理单元可以是处理器。该通信装置还可以包括存储单元。该存储单元可以是存储器。该存储单元,用于存储计算机程序代码,计算机程序代码包括指令。该处理单元执行该存储单元所存储的指令,以使该第一终端实现第三方面或第三方面的任意一种可能的实现方式中描述的一种确定侧行链路资源的方法。当该通信装置是第一终端内的芯片时,该处理单元可以是处理器,该通信单元可以统称为:通信接口。例如,通信接口可以为输入/输出接口、管脚或电路等。该处理单元执行存储单元所存储的计算机程序代码,以使该第一终端实现第三方面或第三方面的任意一种可能的实现方式中描述的一种确定侧行链路资源的方法,该存储单元可以是该芯片内的存储单元(例如,寄存器、缓存等),也可以是该第一终端内的位于该芯片外部的存储单元(例如,只读存储器、随机存取存储器等)。
可选的,处理器、收发器和存储器相互耦合。
第八方面,本申请实施例提供一种通信装置,该通信装置可以实现第四方面或第四方面的任意可能的实现方式中的方法,因此也能实现第四方面或第四方面任意可能的实现方式中的有益效果。该通信装置可以为第一终端,也可以为可以支持第一终端实现第四方面或第四方面的任意可能的实现方式中的方法的装置,例如应用于第一终端中的芯片。该装置可以通过软件、硬件、或者通过硬件执行相应的软件实现上述方法。
一种示例,本申请实施例提供一种通信装置,包括:通信单元和处理单元,其中,通信单元可以是收发器也可以是包括一个或多个具有收发信息功能的模块,处理单元可以是处理器也可以是包括一个或多个具有处理功能的模块。下述以处理单元和通信为例描述。
其中,通信单元,用于接收来自第二终端的针对第一数据包的确认信息。该确认信息指示第二终端成功解码第一数据包。处理单元,用于根据确认信息,确定第二终端成功解码第一数据包。处理单元,用于执行下述步骤中的任一个:通过通信单元向网络设备发送或不发送第二指示信息,第二指示信息用于指示第二终端成功解码第一数据包。或者处理单元,用于释放第二侧行链路资源,第二侧行链路资源为用于重新传输第一数据包的侧行链路资源;其中,第二侧行链路资源由网络设备分配,或者为 处理单元在侧行链路资源池中预留的侧行链路资源。
结合第八方面,在本申请实施例的第一种可能的实现方式中,第一数据包通过侧行链路HARQ进程传输,本申请实施例提供的处理单元,还用于确定侧行链路HARQ进程的第一变量的值为第二值,第二值用于表示第二终端成功解码第一数据包。
需要说明的是,本申请实施例中第八方面提供的装置还可以包括:第五方面、第六方面以及第七方面所描述的方案。也即第五方面、第六方面、第七方面以及第八方面所描述的各个方案可以组合。
第九方面,本申请实施例提供一种计算机可读存储介质,计算机可读存储介质中存储有计算机程序或指令,当计算机程序或指令在计算机上运行时,使得计算机执行如第一方面至第一方面的任意一种可能的实现方式中描述的一种确定侧行链路资源的方法。
第十方面,本申请实施例提供一种计算机可读存储介质,计算机可读存储介质中存储有计算机程序或指令,当计算机程序或指令在计算机上运行时,使得计算机执行如第二方面至第二方面的任意一种可能的实现方式中描述的一种确定侧行链路资源的方法。
第十一方面,本申请实施例提供一种计算机可读存储介质,计算机可读存储介质中存储有计算机程序或指令,当计算机程序或指令在计算机上运行时,使得计算机执行如第三方面至第三方面的任意一种可能的实现方式中描述的一种确定侧行链路资源的方法。
第十二方面,本申请实施例提供一种计算机可读存储介质,计算机可读存储介质中存储有计算机程序或指令,当计算机程序或指令在计算机上运行时,使得计算机执行如第四方面至第四方面的任意一种可能的实现方式中描述的一种确定侧行链路资源的方法。
第十三方面,本申请实施例提供一种包括指令的计算机程序产品,当指令在计算机上运行时,使得计算机执行第一方面或第一方面的各种可能的实现方式中描述的一种确定侧行链路资源的方法。
第十四方面,本申请提供一种包括指令的计算机程序产品,当指令在计算机上运行时,使得计算机执行第二方面或第二方面的各种可能的实现方式中描述的一种确定侧行链路资源的方法。
第十五方面,本申请提供一种包括指令的计算机程序产品,当指令在计算机上运行时,使得计算机执行第三方面或第三方面的各种可能的实现方式中描述的一种确定侧行链路资源的方法。
第十六方面,本申请提供一种包括指令的计算机程序产品,当指令在计算机上运行时,使得计算机执行第四方面或第四方面的各种可能的实现方式中描述的一种确定侧行链路资源的方法。
第十七方面,本申请实施例提供了一种通信装置用于实现上述第一方面至第四方面中任一方面的各种可能的设计中的各种方法。该通信装置可以为上述第一终端,或者包含上述第一终端的装置。该通信装置包括实现上述方法相应的模块、单元、或手段(means),该模块、单元、或means可以通过硬件实现,软件实现,或者通过硬件 执行相应的软件实现。该硬件或软件包括一个或多个与上述功能相对应的模块或单元。
第十八方面,本申请实施例提供了一种通信装置,该通信装置包括:至少一个处理器和通信接口。其中,当该通信装置运行时,该处理器执行该通信装置中存储的该计算机执行指令,以使该通信装置执行如上述第一方面至第四方面中任一方面的各种可能的设计中的任一项的方法。例如,该通信装置可以为第一终端,或者为应用于第一终端中的芯片。
应理解,上述十八方面中描述的通信装置中还可以包括:总线和存储器,存储器用于存储代码和数据。可选的,至少一个处理器通信接口和存储器相互耦合。
第十九方面,本申请实施例提供一种通信系统,该通信系统包括如下中任一个或多个:第五方面、第六方面、第七方面、或第八方面及各种可能的实现方式中描述的通信装置,以及第二终端。
其中,第二终端和第五方面、第六方面、第七方面、或第八方面及各种可能的实现方式中描述的通信装置之间具有侧行链路。
该通信系统还可以包括:网络设备。
第二十方面,本申请实施例提供一种通信装置,该通信装置包括处理器和存储介质,所述存储介质存储有指令,所述指令被所述处理器运行时,实现如第一方面或第一方面的各种可能的实现方式描述的方法。
第二十一方面,本申请实施例提供一种通信装置,该通信装置包括处理器和存储介质,所述存储介质存储有指令,所述指令被所述处理器运行时,实现如第二方面或第二方面的各种可能的实现方式描述的方法。
第二十二方面,本申请实施例提供一种通信装置,该通信装置包括处理器和存储介质,所述存储介质存储有指令,所述指令被所述处理器运行时,实现如第三方面或第三方面的各种可能的实现方式描述的方法。
第二十三方面,本申请实施例提供一种通信装置,该通信装置包括处理器和存储介质,所述存储介质存储有指令,所述指令被所述处理器运行时,实现如第四方面或第四方面的各种可能的实现方式描述的方法。
第二十四方面,本申请实施例提供了一种通信装置,该通信装置包括一个或者多个模块,用于实现上述第一方面、第二方面、第三方面、第四方面的方法,该一个或者多个模块可以与上述第一方面、第二方面、第三方面、第四方面的方法中的各个步骤相对应。
第二十五方面,本申请实施例提供一种芯片,该芯片包括处理器和通信接口,通信接口和处理器耦合,处理器用于运行计算机程序或指令,以实现第一方面或第一方面的各种可能的实现方式中所描述的一种方法。通信接口用于与所述芯片之外的其它模块进行通信。
第二十六方面,本申请实施例提供一种芯片,该芯片包括处理器和通信接口,通信接口和处理器耦合,处理器用于运行计算机程序或指令,以实现第二方面或第二方面的各种可能的实现方式中所描述的一种方法。通信接口用于与芯片之外的其它模块进行通信。
第二十七方面,本申请实施例提供一种芯片,该芯片包括处理器和通信接口,通 信接口和处理器耦合,处理器用于运行计算机程序或指令,以实现第三方面或第三方面的各种可能的实现方式中所描述的一种方法。通信接口用于与芯片之外的其它模块进行通信。
第二十八方面,本申请实施例提供一种芯片,该芯片包括处理器和通信接口,通信接口和处理器耦合,处理器用于运行计算机程序或指令,以实现第四方面或第四方面的各种可能的实现方式中所描述的一种方法。通信接口用于与所述芯片之外的其它模块进行通信。
具体的,本申请实施例中提供的芯片还包括存储器,用于存储计算机程序或指令。
上述提供的任一种装置或计算机存储介质或计算机程序产品或芯片或通信系统均用于执行上文所提供的对应的方法,因此,其所能达到的有益效果可参考上文提供的对应的方法中对应方案的有益效果,此处不再赘述。
图1为本申请实施例提供的一种通信系统的架构图;
图2为本申请实施例提供的一种通信设备的结构示意图;
图3a~图3d为网络设备和终端之间反馈确认信息的示意图;
图4-图6为本申请实施例提供的一种确定侧行链路资源的方法的流程示意图;
图7为本申请实施例提供的一种通信装置的结构示意图;
图8为本申请实施例提供的又一种通信装置的结构示意图;
图9为本申请实施例提供的一种芯片的结构示意图。
为了便于清楚描述本申请实施例的技术方案,在本申请的实施例中,采用了“第一”、“第二”等字样对功能和作用基本相同的相同项或相似项进行区分。例如,第一终端和第一终端仅仅是为了区分不同的终端,并不对其先后顺序进行限定。本领域技术人员可以理解“第一”、“第二”等字样并不对数量和执行次序进行限定,并且“第一”、“第二”等字样也并不限定一定不同。
需要说明的是,本申请中,“示例性的”或者“例如”等词用于表示作例子、例证或说明。本申请中被描述为“示例性的”或者“例如”的任何实施例或设计方案不应被解释为比其他实施例或设计方案更优选或更具优势。确切而言,使用“示例性的”或者“例如”等词旨在以具体方式呈现相关概念。
本申请中,“至少一个”是指一个或者多个,“多个”是指两个或两个以上。“和/或”,描述关联对象的关联关系,表示可以存在三种关系,例如,A和/或B,可以表示:单独存在A,同时存在A和B,单独存在B的情况,其中A,B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达,是指的这些项中的任意组合,包括单项(个)或复数项(个)的任意组合。例如,a,b,或c中的至少一项(个),可以表示:a,b,c,a-b,a-c,b-c,或a-b-c,其中a,b,c可以是单个,也可以是多个。
本申请的技术方案可以应用于各种通信系统,例如:长期演进(long time evolution,LTE)系统、LTE频分双工(frequency division duplex,FDD)系统、LTE时分双工(time division duplex,TDD)系统、通用移动通信系统(universal mobile telecommunication system,UMTS)、全球互联微波接入(worldwide interoperability for microwave access,WiMAX)通信系统、公共陆地移动网络(public land mobile network,PLMN)系统、设备对设备(device to device,D2D)网络系统或者机器对机器(machine to machine,M2M)网络系统以及未来的5G通信系统等。
本申请实施例描述的网络架构以及业务场景是为了更加清楚的说明本申请实施例的技术方案,并不构成对于本申请实施例提供的技术方案的限定,本领域普通技术人员可知,随着网络架构的演变和新业务场景的出现,本申请实施例提供的技术方案对于类似的技术问题,同样适用。本申请实施例中以提供的方法应用于NR系统或5G网络中为例进行说明。
在介绍本申请实施例之前,首先介绍本申请实施例中涉及到的名词:
1)、侧行链路(Sidelink,SL)是指:针对终端和终端之间直接通信定义的,也即第一终端和第二终端之间不通过网络设备转发而直接通信的链路。
2)、Sidelink资源是指:第一终端在侧行链路上与第二终端传输Sidelink信息(例如,数据包,或者V2X业务)的资源。
3)、Sidelink信息是指:任意两个终端在侧行链路上传输的侧行链路数据或者控制信息。
下面将结合附图,对本申请中的技术方案进行描述。
如图1所示,图1示出了本申请实施例提供的一种确定侧行链路资源的方法所应用的通信系统,该通信系统包括:一个或多个网络设备(比如图1所示的网络设备10)、一个或多个终端(比如图1所示的第一终端20,第二终端30、第三终端40)。在图1中以终端为车辆为例。
其中,第一终端20与网络设备10通信,第一终端20和第二终端30、第二终端30和第三终端40进行通信。当然,第二终端30和第三终端40也可以和网络设备10通信。
需要说明的是,图1所示的通信系统还可以包括:核心网。网络设备10可以与该核心网连接。核心网可以是4G核心网(例如,核心分组网演进(evolved packet core,EPC))或者5G核心网(5G core,5GC)、或未来的各种通信系统中的核心网。以及路侧单元(road side unit,RSU)。RSU还可以为该系统中的各个终端提供各类服务信息和数据网络的接入,例如,以终端为车辆为例,例如,RSU还可以为该系统中的各个终端提供不停车收费、车内娱乐等功能都极大的提高了交通智能化。
以核心网可以是4G核心网为例,网络设备10可以为4G系统中的演进型基站(evolved Node B,eNB或eNodeB)。第一终端20为可以与eNB进行信息传输的终端。eNB通过S1接口接入EPC网。
以核心网可以5G核心网为例,网络设备10可以为NR系统中的下一代节点B(the next generation node B,gNB),第一终端20为可以与gNB进行信息传输的终端。gNB通过NG接口接入5GC。
当然,网络设备10还可以为第三代合作伙伴计划(3rd generation partnership project,3GPP)协议基站,或者可以为非3GPP协议基站。
其中,网络设备10与第一终端20之间具有第一传输链路。例如,第一传输链路 可以为Uu链路。第一终端20与第二终端30之间具有第二传输链路。例如,第二传输链路可以为侧行链路。
第一终端20与第二终端30可以在Sidelink上彼此传输V2X业务,也可以称为第一数据包或sindlink信息。第一终端20可以在Uu链路上向网络设备10传输上行(Uplink,UL)Uu业务,也可以在Uu链路上接收网络设备10发送的下行(Downlink,DL)Uu业务。
其中,第一终端20与第二终端30通过直连通信的接口可以为接口1。例如接口1可以称为PC5接口,采用车联网专用频段(如5.9GHz)。第一终端20与网络设备10之间的接口可以称为接口2(例如,Uu接口),采用蜂窝网频段(如1.8GHz)。PC5接口一般用于V2X,或者D2D等可以在设备间进行直联通信的场景。
上述接口1、接口2的名称仅是个示例,本申请实施例对接口1、接口2的名称不作限定。
如图1所示,图1示出了本申请实施例提供的一种场景示例,如图1所示,以第一终端20为车辆1为例,如果车辆1决定执行超车操作,则车辆1可以向位于其前方的第二终端30(例如,车辆2)在第一侧行链路资源上发送对话框50的中的第一数据包(例如,第一数据包可以为超车指示、车辆1的当前车速(例如,75km/h)),以便车辆2接收到1的当前车速以及超车指示后,减速行驶,以使得1安全超车。如果车辆2接收到1的当前车速以及超车指示,则车辆2可以向车辆1反馈对话框60的信息(即ACK,用于指示正确接收)。但是,车辆2可能向车辆1发送了对话框60的信息,但是由于车辆2和车辆1之间的信道质量低于阈值,导致车辆1未接收到车辆2反馈的ACK。或者车辆2在发送ACK的同时还需要执行随机接入或者向第三终端40发送车辆2是否加速或者车辆的信息,从而放弃反馈ACK,而优先执行随机接入或者向第三终端40发送车辆2是否加速或者车辆的信息,而放弃传输ACK,这些因素都将导致车辆1未接收到车辆2反馈的ACK,因此,车辆1确定未接收到车辆2反馈的ACK。由于,车辆1确定未接收到车辆2反馈的ACK,车辆1并不知道车辆2是否成功解码,此时车辆1为了保证超车时的安全,则需要向车辆2重新发送1的当前车速以及超车指示。因此,车辆1需要重新获取传输1的当前车速以及超车指示的侧行链路资源。
应理解图1的场景仅是一种以车辆1反馈1的当前车速以及超车指示,但是1未接收到2的反馈为例,在实际过程中,还可能存在车辆1准备向车辆2发送当前车速以及超车指示时,但是因为某些因素却放弃向车辆2发送,因此也车辆1也可以确定未接收到来自车辆2的确认信息。
图1所示的场景仅为举例,其他终端之间通信的场景也适用于本申请方案。
通常情况下,V2X业务在Sidelink上的Sidelink资源上传输,Uu业务在Uu链路上的Uu资源上传输。
第一终端20获取Sidelink的资源分配方式有两种,一种是基于网络设备10调度的资源分配方式,即由网络设备10为第一终端20调度Sidelink资源。该第一终端20可以在Sidelink资源上向第二终端30传输Sidelink数据或者Sidelink信息。另一种是第一终端20在资源池中自主选择资源的分配方式,即由第一终端20在网络设备10 通过系统消息或者专用信令配置或者预配置的资源池中自主选择Sidelink资源,以在自主选择的Sidelink资源上向第二终端30传输Sidelink数据或者Sidelink信息。
第一终端20或第二终端30,是一种具有无线通信功能的设备,可以部署在陆地上,包括室内或室外、手持或车载。也可以部署在水面上(如轮船等)。还可以部署在空中(例如飞机、气球和卫星上等)。终端又称之为用户设备(user equipment,UE),移动台(mobile station,MS)、移动终端(mobile terminal,MT)以及终端设备等,是一种向用户提供语音和/或数据连通性的设备。例如,终端包括具有无线连接功能的手持式设备、车载设备等。目前,终端可以是:手机(mobile phone)、平板电脑、笔记本电脑、掌上电脑、移动互联网设备(mobile internet device,MID)、可穿戴设备(例如智能手表、智能手环、计步器等),车载设备(例如,汽车、自行车、电动车、飞机、船舶、火车、高铁等)、虚拟现实(virtual reality,VR)设备、增强现实(augmented reality,AR)设备、工业控制(industrial control)中的无线终端、智能家居设备(例如,冰箱、电视、空调、电表等)、智能机器人、车间设备、无人驾驶(self driving)中的无线终端、远程手术(remote medical surgery)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端,或智慧家庭(smart home)中的无线终端、飞行设备(例如,智能机器人、热气球、无人机、飞机)等。本申请一种可能的应用的场景中终端设备为经常工作在地面的终端设备,例如车载设备。在本申请中,为了便于叙述,部署在上述设备中的芯片,例如片上系统(System-On-a-Chip,SOC)、基带芯片等,或者其他具备通信功能的芯片也可以称为终端。
终端可以是具有相应通信功能的车辆,或者车载通信装置,或者其它嵌入式通信装置,也可以是用户手持通信设备,包括手机,平板电脑等。
作为示例,在本申请实施例中,该终端还可以是可穿戴设备。可穿戴设备也可以称为穿戴式智能设备,是应用穿戴式技术对日常穿戴进行智能化设计、开发出可以穿戴的设备的总称,如眼镜、手套、手表、服饰及鞋等。可穿戴设备即直接穿在身上,或是整合到用户的衣服或配件的一种便携式设备。可穿戴设备不仅仅是一种硬件设备,更是通过软件支持以及数据交互、云端交互来实现强大的功能。广义穿戴式智能设备包括功能全、尺寸大、可不依赖智能手机实现完整或者部分的功能,例如:智能手表或智能眼镜等,以及只专注于某一类应用功能,需要和其它设备如智能手机配合使用,如各类进行体征监测的智能手环、智能首饰等。
网络设备10为与第一终端20配合使用的一种可以用于发射或接收信号的实体。例如,可以是WLAN中的接入点(access Point,AP),还可以是LTE中的演进型基站(evolved Node B,eNB或eNodeB),或者中继站或接入点,或者车载设备、可穿戴设备以及未来5G网络中的网络设备或者未来演进的PLMN网络中的网络设备等。
另外,在本发明实施例中,网络设备为小区提供服务,终端通过该小区使用的传输资源(例如,时域资源,或者,频域资源,或者,时频资源)与网络设备进行通信。该小区可以是网络设备(例如基站)对应的小区,小区可以属于宏基站,也可以属于小小区(small cell)对应的基站,这里的小小区可以包括:城市小区(metro cell)、微小区(micro cell)、微微小区(Pico cell)、毫微微小区(femto cell)等,这些小 小区具有覆盖范围小和发射功率低的特点,适用于提供高速率的数据传输服务。
图2示出了本申请实施例提供一种通信设备的硬件结构示意图。本申请实施例中的第一终端20、第二终端30以及网络设备10的硬件结构可以参考如图2所示的结构。该通信设备包括处理器41,通信线路44以及至少一个收发器(图2中仅是示例性的以包括收发器43为例进行说明)。
处理器41可以是一个通用中央处理器(central processing unit,CPU),微处理器,特定应用集成电路(application-specific integrated circuit,ASIC),或一个或多个用于控制本申请方案程序执行的集成电路。
通信线路44可包括一通路,在上述组件之间传送信息。
收发器43,使用任何收发器一类的装置,用于与其他设备或通信网络通信,如以太网,无线接入网(radio access network,RAN),无线局域网(wireless local area networks,WLAN)等。
可选的,该通信设备还可以包括存储器42。
存储器42可以是只读存储器(read-only memory,ROM)或可存储静态信息和指令的其他类型的静态存储设备,随机存取存储器(random access memory,RAM)或者可存储信息和指令的其他类型的动态存储设备,也可以是电可擦可编程只读存储器(electrically erasable programmable read-only memory,EEPROM)、只读光盘(compact disc read-only memory,CD-ROM)或其他光盘存储、光碟存储(包括压缩光碟、激光碟、光碟、数字通用光碟、蓝光光碟等)、磁盘存储介质或者其他磁存储设备、或者能够用于携带或存储具有指令或数据结构形式的期望的程序代码并能够由计算机存取的任何其他介质,但不限于此。存储器可以是独立存在,通过通信线路44与处理器相连接。存储器也可以和处理器集成在一起。
其中,存储器42用于存储执行本申请方案的计算机执行指令,并由处理器41来控制执行。处理器41用于执行存储器42中存储的计算机执行指令,从而实现本申请下述实施例提供的策略控制方法。
可选的,本申请实施例中的计算机执行指令也可以称之为应用程序代码,本申请实施例对此不作具体限定。
在具体实现中,作为一种实施例,处理器41可以包括一个或多个CPU,例如图2中的CPU0和CPU1。
在具体实现中,作为一种实施例,通信设备可以包括多个处理器,例如图2中的处理器41和处理器45。这些处理器中的每一个可以是一个单核(single-CPU)处理器,也可以是一个多核(multi-CPU)处理器。这里的处理器可以指一个或多个设备、电路、和/或用于处理数据(例如计算机程序指令)的处理核。
下面将结合图4至图5对本申请实施例提供的一种确定侧行链路资源的方法进行具体阐述。
需要说明的是,本申请下述实施例中各个网元之间的消息名字或消息中各参数的名字等只是一个示例,具体实现中也可以是其他的名字,本申请实施例对此不作具体限定。
需要指出的是,本申请各实施例之间可以相互借鉴或参考,例如,相同或相似的 步骤,方法实施例、通信系统实施例和装置实施例之间,均可以相互参考,不予限制。
如图3a所示,在Uu链路上,为了保证终端和网络设备之间的数据传输的可靠性的一种方法是对数据进行HARQ重传。Uu链路上的上行数据传输的HARQ的基本过程如图3a所示:1、网络设备10向第一终端20发送物理下行控制信道(physical downlink control channel,PDCCH),该PDCCH调度第一终端20传输新上行数据。2、第一终端20向网络设备10发送上行数据。3、网络设备10收到该上行数据后,如果网络设备10解码失败。则网络设备10向第一终端20发送PDCCH,该PDCCH用于调度第一终端20重传上述步骤中未被网络设备10成功解码的上行数据。4、第一终端20根据PDCCH确定重传资源位置后在重传资源上重传上行数据。
如图3b所示,Uu链路上的下行数据传输的HARQ的基本过程:1、网络设备10向第一终端20发送下行数据。2、第一终端20收到该下行数据后,如果解码失败,第一终端20反馈NACK给网络设备10。3、网络设备10接收到NACK会重传下行数据。使得第一终端20根据重传指示在新的物理下行共享信道(physical downlink shared channel,PDSCH)上重新接收下行数据。网络设备10执行下行数据的重传。4、第一终端20收到该下行数据后,解码成功,则向网络设备10反馈ACK。
网络设备10执行下行数据的重传,包括:网络设备10通过PDCCH指示PDSCH的资源位置,PDSCH携带重传的下行数据。
目前在LTE系统中,侧行链路数据传输的HARQ基本过程如图3c所示:1、第一终端20发送侧行链路数据(包括数据的新传和重传)给第二终端30。2、第二终端30对侧行链路数据进行解码。由于目前LTE系统中,第一终端20发送侧行链路数据采用广播方式,因此,第二终端30无论是否成功解码侧行链路数据,第二终端30均不向第一终端20发送ACK/NACK反馈。由于第一终端20未接收到第二终端30反馈的ACK,其有可能误以为第二终端30未成功解码,后续过程中还可能如步骤2~M继续向第二终端30重传侧行链路数据,但是由于第二终端30已成功解码侧行链路数据,因此,第二终端30对于重传的侧行链路数据不再解码。这样会使得第一终端20重复发送侧行链路数据,造成侧行链路资源浪费。
在NR系统中,Sidelink支持单播,组播和广播传输。对于单播和组播传输,支持基于HARQ反馈的重传机制。基于网络设备10调度的资源分配方式下,侧行链路数据传输的HARQ过程如图3d所示:
1、网络设备10向第一终端20发送PDCCH,以调度第一终端20的侧行链路数据的新传。2、第一终端20向第二终端30发送侧行链路数据。3、第二终端30接收到侧行链路数据后,如果解码失败,第二终端30向第一终端20反馈NACK。4、第一终端20反馈NACK给网络设备10。5、网络设备10向第一终端20发送PDCCH,调度第一终端20重新向第二终端30发送第二终端30未成功解码的侧行链路数据,即侧行链路数据重传。6、第一终端20执行侧行链路重传。
但是,第一终端20可能未接收到第二终端30反馈的确认信息,这时,第一终端20可能不确定第二终端30是否正确接收到侧行链路数据。进而第一终端20不确定后续如何处理该侧行链路数据。
本申请实施例提供一种确定侧行链路资源的方法,该方法的执行主体是第一通信 装置。该第一通信装置可以为第一终端20,或者为设置于第一终端20内的芯片,该方法中的第二通信装置可以为第二终端30或者设置于第二终端30内的芯片,下述实施例以第一通信装置为第一终端20,第二通信装置为第二终端30为例。
如图4所示,图4示出了本申请实施例提供的一种确定侧行链路资源的方法,包括:
步骤401、第一终端20确定未接收到来自第二终端30的针对第一数据包的确认信息。该确认信息用于指示第二终端30是否成功解码第一数据包。第一数据包为第一终端20在第一侧行链路资源上传输的数据包。
示例性的,本申请实施例中的确认信息也可以称为侧行链路HARQ信息。例如,该确认信息可以为ACK,或者本申请实施例中的确认信息可以为NACK。其中,ACK用于指示第二终端30成功解码第一数据包。NACK用于指示第二终端30未成功解码第一数据包。
可以理解的是,本申请实施例中成功解码还可以使用成功接收替换。本申请实施例中未成功解码还可以使用未成功接收替换。下述实施例中以成功解码和未成功解码为例。
本申请实施例中第一侧行链路资源为网络设备10为第一终端20配置的用于传输第一数据包的侧行链路资源。或者第一侧行链路资源为第一终端20从侧行链路资源池中选择的用于传输第一数据包的侧行链路资源。
可以理解的是,第一数据包可以为新传数据包。新传数据包即第一终端20第一次(首次)向第二终端30传输的数据包。或者该第一数据包为重传数据包。重传数据包即第一终端2第M次向第二终端30传输的数据包。换句话说重传数据包也即第一终端20非首次向第二终端30传输的数据包。M为大于或等于2的整数,且M小于或等于第一终端20的最大重传次数。或者M小于或等于第一数据包的侧行链路HARQ进程的最大重传次数。
步骤402、在第一终端20确定第二终端30未成功解码第一数据包的情况下,第一终端20获取用于重新传输第一数据包的第二侧行链路资源。
该第二侧行链路资源可以为第一终端20自主选择的侧行链路资源。该第二侧行链路资源可以为网络设备10为第一终端20配置的侧行链路资源。
作为本申请的另一个实施例,本申请实施例提供的方法在步骤402之后还包括:第一终端20在第二侧行链路资源向第二终端30重新传输第一数据包。
相应的,第二终端30可以在该第二侧行链路资源上重新接收该第一数据包。
本申请实施例提供一种确定侧行链路资源的方法,由于在实际过程中,第一终端可能存在应该向第二终端发送第一数据包的时刻未能向第二终端发送第一数据包的情况,或者第一终端向第二终端发送了第一数据包,但是由于信道质量原因,第二终端反馈了确认信息但是第一终端未接收到确认信息的情况,或者,第一终端向第二终端发送了第一数据包,但第二终端未能向第一终端反馈针对第一数据包的确认信息。现有技术中并未涉及第一终端在确定未收到确认信息时,如果处理后续数据传输问题,这样可能会导致侧行链路传输的可靠性降低,因此,本申请实施例中第一终端确定未接收到来自第二终端的针对第一数据包的确认信息时,如果第一终端确定第二终端未 成功解码第一数据包,则第一终端重新获取用于传输第一数据包的第二侧行链路资源,这样便于第一终端后续在第二侧行链路资源上重新传输第一数据包,可以提高侧行链路传输的可靠性。
本申请实施例中的步骤401可以通过下述情况1或情况2中的任一个实现:
情况1、第一终端20在n时刻应该在侧行链路上使用第一侧行链路资源向第二终端30发送第一数据包,但第一终端20实际未在第n时刻向第二终端30发送第一数据包。因此,第一终端20确定未接收到来自第二终端30的针对第一数据包的确认信息。
其中,n时刻为第一终端20应该发送第一数据包的时刻。侧行链路为第一终端20和第二终端30之间的链路。
例如,第一终端20发送第一数据包的时刻与第一终端20向网络设备10发送的上行数据或上行消息的时刻相同或冲突,则第一终端20放弃向第二终端30发送第一数据包,因此,第一终端20确定未接收到来自第二终端30的针对第一数据包的确认信息。
示例性的,第一终端20发送第一数据包的时刻与第一终端20向网络设备10发送的上行数据或上行消息的时刻相同,且承载第一数据包的侧行链路信道的优先级低于承载上行数据或上行消息的物理上行信道,则第一终端20放弃向第二终端30发送第一数据包。
情况2、第一终端20在n时刻在侧行链路上使用第一侧行链路资源向第二终端30发送第一数据包,但是之后第一终端20未接收到来自第二终端30的针对第一数据包的确认信息,因此,第一终端20确定未接收到来自第二终端30的针对第一数据包的确认信息。
可以理解的是,在情况2下,第二终端30接收到第一数据包,无论第二终端30是否成功解码第一数据包,第二终端30会生成NACK或ACK作为确认信息。一方面,如果第二终端30向第一终端20反馈NACK或ACK作为确认信息,但是,由于传输NACK或ACK的信道质量问题,第一终端20没有接收到NACK或ACK。因此,第一终端20确定未接收到来自第二终端30的针对第一数据包的确认信息。另一方面,第二终端30向第一终端20反馈NACK或ACK作为确认信息的时刻与第二终端30向其他终端或网络设备发送的上行数据或上行消息的时刻相同或冲突,则第二终端30放弃向第一终端20反馈NACK或ACK,导致ACK/NACK无法发送,因此,第一终端20确定未接收到来自第二终端30的针对第一数据包的确认信息。
由于本申请实施例中第一终端20可以自主从侧行链路资源池中选择第二侧行链路资源,当然第一终端20也可以通过触发网络设备10,以从网络设备10处确定第二侧行链路资源。下述将分别介绍:
示例1)、第一终端20自主选择侧行链路资源的方式
作为本申请的另一个实施例,如图5所示,本申请实施例中,第一终端获取用于重新传输第一数据包的侧行链路资源,包括:
步骤4021、第一终端20触发第一数据包关联的侧行链路混合自动重复请求HARQ进程的资源重选。
一种可能的实现:步骤4021具体可以通过以下方式实现:第一终端20确定第二 终端30未成功解码第一数据包时,第一终端20在n时刻触发资源重选。该实现适用于第一终端20在n时刻未向第二终端30发送第一数据包的情况。n时刻为所述第一终端发送所述第一数据包的时刻。
另一种可能的实现:步骤4021具体可以通过以下方式实现:第一终端20确定第二终端30未成功解码第一数据包时,第一终端20在n时刻之后触发资源重选。该实现适用于第一终端20在n时刻未向第二终端30发送第一数据包的情况。
又一种可能的实现:步骤4021具体可以通过以下方式实现:第一终端20确定第二终端未成功解码所述第一数据包时,第一终端20在n+X时刻触发资源重选。其中,X为第一终端20发送第一数据包的时间和第一终端20接收第二终端30反馈的确认信息的时间间隔。该方式适用于第一终端20在n时刻向第一终端20发送了第一数据包,但是未收到第二终端30发送的确认信息的过程。
步骤4022、第一终端20从侧行链路资源池中选择第二侧行链路资源。
一种示例,本申请实施例中的侧行链路资源池可以为:第一终端20预先配置的侧行链路资源。第一终端20可以从侧行链路资源池中选择在侧行链路上进行数据包重传或者新传的侧行链路资源。
另一种示例,本申请实施例中的侧行链路资源池可以为:网络设备10通过系统消息或者专用信令配置为第一终端20配置的。
示例2)、网络设备10为第一终端20调度的侧行链路资源的方式
作为本申请的另一个实施例,如图6所示,本申请实施例提供的方法在步骤402之前,还包括:
步骤403、网络设备10向第一终端20发送第一配置消息。该第一配置消息包括与侧行链路HARQ进程关联的侧行链路资源。例如,该第一配置信息中包括用于确定侧行链路资源位置的信息,以及侧行链路资源对应的HARQ进程号。
网络设备10可以主动向第一终端20发送第一配置消息,网络设备10也可以在第一终端20的触发下向第一终端20发送第一配置消息。
步骤404、第一终端20接收来自网络设备10的第一配置消息。
相应的,本申请实施例中的第一终端获取用于重新传输第一数据包的侧行链路资源,可以通过以下方式实现:第一终端20将与侧行链路HARQ进程关联的侧行链路资源确认为第二侧行链路资源。
示例2-1)、第一终端20触发网络设备10发送第一配置消息。
如果网络设备10在第一终端20的触发下向第一终端20发送第一配置消息,则本申请实施例提供的方法在步骤403之前还可以包括:
步骤405a、第一终端20向网络设备10反馈第一指示信息。第一指示信息指示第二终端30未成功解码第一数据包。
具体的,第一终端20向网络设备10反馈的Sidelink HARQ进程m的HARQ确认信息为NACK。具体的:第一终端20的MAC层通知PHY层生成确认信息为NACK,或者MAC层生成确认信息为NACK后指示给PHY层,以由PHY层发送至网络设备10。
步骤406、网络设备10接收来自第一终端20的第一指示信息。
具体的,第一指示信息具体用于向网络设备10指示侧行链路HARQ的第一数据包未被第二终端30成功解码。例如,第一指示信息可以用于指示侧行链路HARQ的进程号以及NACK,以便于网络设备10确定侧行链路HARQ的第一数据包未被第二终端30成功解码。
通过步骤405a,在第一终端20向网络设备10发送第一指示信息的情况下,可以使得网络设备10根据第一指示信息,确定第二终端30未成功解码第一数据包。这样网络设备10后续便可以为第一终端20分配用于重传的第二侧行链路资源。
示例2-2)、第一终端20未触发网络设备10发送第一配置消息。
在网络设备10可以主动向第一终端20发送第一配置消息,也即第一终端20未触发网络设备10发送第一配置消息的情况下,本申请实施例在步骤4025之前还包括:
步骤405b、第一终端20未向网络设备10反馈第一指示信息。这样网络设备10则在反馈第一指示信息的资源上不接收到第一指示信息。如果第一终端20和网络设备10提前协商好,如果第一终端20确定第一数据包未被成功解码,则可以不用向网络设备10发送第一指示信息,这样可以节约传输第一指示信息的上行资源。也即如果第一终端20未向网络设备10发送第一指示信息时,网络设备10可以默认第二终端30未成功解码第一数据包。这样网络设备10后续便可以确定需要为第一终端20分配用于重传的第二侧行链路资源。
具体的,第一终端20的MAC层不通知第一终端20的PHY层生成确认信息,或者第一终端20的MAC生成NACK但不指示给第一终端20的物理层。
应理解,在示例2-1)和示例2-2)适用于无论第一终端20采用情况1还是情况2的方式确定第一终端20未接到来自第二终端30的确认信息。
相应的,本申请实施例中,第一终端20获取用于重新传输第一数据包的侧行链路资源,具体可以通过以下方式实现:第一终端20将侧行链路HARQ进程关联的侧行链路资源确定为第二侧行链路资源。
无论第一终端20自主选择第二侧行链路资源还是网络设备10为第一终端20配置第二侧行链路资源,如图5或图6所示,本申请实施例中第一终端20确定第二终端30未成功解码第一数据包,均可以通过以下方式具体实现:
方式1、在第一终端20向第二终端30发送第一数据包,但第一终端20未接收到来自第二终端30的确认信息的情况下,第一终端20确定第二终端30未成功解码第一数据包。
作为本申请实施例的一种可能的实现方式,在第一终端20向第二终端30发送第一数据包,但第一终端20未接收到来自第二终端30的确认信息的情况下,如果第一终端20确定第一数据包需要重传,则第一终端20确定第二终端30未成功解码第一数据包。也即在第一终端20确定第一数据包需要重传时,执行步骤4021。
方式2、在满足第一条件时,且在第一终端20向第二终端30发送第一数据包,但第一终端20未接收到来自第二终端30的确认信息的情况下,第一终端20确定第二终端30未成功解码第一数据包。其中,第一条件,包括以下中的任一个或多个:第一数据包中的第一侧行链路逻辑信道被配置为需要重传,其中,第一侧行链路逻辑信道为所述第一数据包中的优先级最高的侧行链路逻辑信道。第一终端被配置为需要重传; 第一终端20确定从第一预设范围内生成的随机数大于第一门限值。
应理解,本申请实施例中第一终端20可以在确定满足第一条件时,确定第一数据包需要重传。
示例性的,第一终端20具有第一门限值,该第一门限值可以为网络设备10为第一终端20配置的,或者第一门限值也可以为预先配置的。第一预设范围可以为[0,1]。可选的,第一门限值可以通过由网络设备10通过系统信息或者专用信令为第一终端20配置。
示例性的,实现方式1:网络设备10可以为第一终端20的一个或多个侧行链路逻辑信道中每个侧行链路逻辑信道配置一个指示信息。该指示信息用于指示当第一终端20发送了侧行链路HARQ进程m的第一数据包,即SL MAC PDU,并且该SL MAC PDU中包含某个侧行链路逻辑信道的MAC SDU,但未接收到第二终端30反馈的侧行链路HARQ进程m的确认信息时,该侧行链路逻辑信道的MAC SDU是否需要重传。当出现上述情况时,第一终端20根据侧行链路HARQ进程m的SL MAC PDU中的最高优先级的侧行链路逻辑信道被配置的指示信息确定需要重传还是不需要重传,进行判断。可选的,该指示信息可以通过系统信息或者专用信令配置。其中,侧行链路HARQ进程的SL MAC PDU中包括的来自于一个或多个侧行链路逻辑信道的SL MAC SDU。该第一侧行链路逻辑信道为一个或多个侧行链路逻辑信道中优先级最高的侧行链路逻辑信道。
示例性的,指示信息可以为第三值或者第四值,其中,第三值用于指示该侧行链路逻辑信道上的数据包需要被传输。第四值用于指示该侧行链路逻辑信道上的数据包不需要被传输。
示例性的,实现方式2:网络设备10为第一终端20配置一个指示信息p,该指示信息p用于指示:当第一终端发送了Sidelink HARQ进程m的SL MAC PDU,但未接收到第二终端30反馈的Sidelink HARQ进程m的确认信息时,该SL MAC PDU是否需要重传。当出现上述情况时,第一终端20根据为该第一终端20配置的指示信息p设置为需要重传还是不需要重传,进行判断。可选的,所述指示信息p可以通过系统信息或者专用信令配置。
指示信息p可以为第五值或者第六值,其中,第五值用于指示该第一终端20未收到来自第二终端30反馈的确认信息时,则第一终端20需要重传数据包。第六值用于指示该第一终端20未收到来自第二终端30反馈的确认信息时,则第一终端20不需要重传数据包。
实现方式1和实现方式2的区别在于,对于实现方式1中是否重传侧行链路HARQ进程m的数据包是基于侧行链路HARQ进程m的SL MAC PDU中的最高优先级的侧行链路逻辑信道是被配置了重传还是不需要重传。也即同一个第一终端20的侧行链路HARQ进程m的数据包可能需要重传,第一终端20的侧行链路HARQ进程n的数据包可能不需要重传。也即侧行链路HARQ进程m的SL MAC PDU中的最高优先级的侧行链路逻辑信道被配置为重传。侧行链路HARQ进程n的SL MAC PDU中的最高优先级的侧行链路逻辑信道被配置为不需要重传。
在实现方式2中如果一个第一终端20被配置为需要重传数据包,则在未接收到来 自第二终端30的确认信息的情况时,第一终端20确定需要重传数据包。如果一个第一终端20被配置为不需要重传数据包,则在未接收到来自第二终端30的确认信息的情况时,第一终端20确定不需要重传数据包。也即在实现方式2中如果第一终端被配置为重传,则同一个第一终端20的多个侧行链路HARQ进程m的数据包在第二终端30未成功解码的情况下,都需要被重传。如果第一终端被配置为不需要重传,则同一个第一终端20的多个侧行链路HARQ进程m的数据包在第二终端30未成功解码的情况下,都不需要被重传。
实现方式3、也即当第一终端发送了Sidelink HARQ进程m的MAC PDU,但未接收到第二终端30反馈的Sidelink HARQ进程m的确认信息时,第一终端在[0,1]范围内按均匀分布生成一个随机数。若从第一预设范围内生成的随机数小于第一门限值,则第一终端判断为不需要进行重传,否则,判断为进行重传;或者,若从第一预设范围内生成的随机数大于第一门限值,则第一终端20判断为不需要进行重传,否则,判断为进行重传。
需要说明的是,上述方式1可适用于情况2。针对上述情况1,则第一终端20确定第二终端30未成功解码第一数据包,均可以通过以下方式具体实现:第一终端20确定未向第二终端30发送第一数据包,则第一终端20确定第二终端30未成功解码第一数据包。
本申请实施例中第一终端20为第一终端20的一个或多个侧行链路HARQ进程维护一个第一变量,任一个侧行链路HARQ进程的第一变量的值用于反映该任一个侧行链路HARQ进程的数据包是否被成功解码。如果一个侧行链路HARQ进程的第一变量的值为第一值,则第一值用于表示第二终端30未成功解码数据包。如果一个侧行链路HARQ进程的第一变量的值为第二值,则第二值用于表示第二终端30成功解码数据包。
上述实施例主要描述了第一终端20未接收来自第二终端30的针对第一数据包的确认信息的情况下,如果第一终端20确定第一数据包未被成功解码时,第一终端20确定第二侧行链路资源的过程,但是,在实际过程中,还可以存在第一终端20接收到来自第二终端30的针对第一数据包的确认信息的情况,在这种情况下,如图5或图6所示,本申请实施例提供的方法,包括:
步骤407、第一终端20接收来自第二终端30的针对第一数据包的确认信息,确认信息指示第二终端未成功解码第一数据包。第一数据包为第一终端20在第一侧行链路资源上传输的数据包。
相应的,在步骤407之前,本申请实施例提供的方法还包括:第一终端20在第一侧行链路资源上向第二终端30发送第一数据包。
例如,第一终端20接收来自第二终端30的针对第一数据包的确认信息为NACK。
步骤408、第一终端20根据确认信息,确定第二终端30未成功解码第一数据包。
当第一终端20接收到第二终端30反馈的Sidelink HARQ进程的确认信息为NACK的情况下:
一方面,如果当第一终端20已经预留了用于该Sidelink HARQ进程重传的第二侧行链路资源,第一终端20需要触发第二侧行链路资源重传。可选的,第一终端20将Sidelink HARQ进程对应的第一变量的值设为第一值。
另一方面,第一终端20向网络设备发送第一指示信息。可选的,第一终端20将Sidelink HARQ进程对应的第一变量的值设为第一值。
需要说明的是,本申请实施例中如果第一终端20接收来自第二终端30的针对第一数据包的确认信息,在确认信息指示第二终端30未成功解码第一数据包的情况下,第一终端20还需要执行步骤402。具体的,如图5所示,如果第一终端20自主选择第二侧行链路资源,则步骤402具体可以通过步骤4021和步骤4022来实现。如图6所示,如果第二侧行链路资源由网络设备10为第一终端20调度,则第一终端20还需要执行上述步骤405a、步骤406、步骤403以及步骤404。
无论第一终端20是否接收到来自第二终端30的针对第一数据包的确认信息,在第一终端20确定第二终端30未成功解码第一数据包的情况下,作为一种可能的实施例,第一数据包通过Sindlink HARQ进程传输,结合图5或图6,本申请实施例提供的方法还包括:
步骤409、第一终端20确定侧行链路HARQ进程的第一变量的值为第一值。
其中,第一变量用于记录第二终端反馈的针对侧行链路HARQ进程的确认信息。
当第一终端20接收到第二终端30反馈的Sidelink HARQ进程的确认信息为NACK时,第一终端20将Sidelink HARQ进程对应的第一变量的值设为第一值,并且第一终端20向网络设备10反馈的Sidelink HARQ进程的HARQ确认信息为NACK,或者不反馈NACK。
当第一终端20未接收到第二终端30反馈的Sidelink HARQ进程的确认信息,如果第一终端20通过上述方式确定第二终端30未成功解码第一数据包的情况下,第一终端20自动将Sidelink HARQ进程对应的第一变量的值设为第一值,并且第一终端20向网络设备10反馈的Sidelink HARQ进程的HARQ确认信息为NACK,或者不反馈NACK。
具体的,针对情况1),本申请实施例中的步骤409可以通过以下方式实现:
实现方式2-1、第一终端20的MAC实体判断侧行链路HARQ进程的Sidelink MAC PDU无法传输时,第一终端20的MAC实体自动将该侧行链路HARQ进程的第一变量的值设置为第一值。
实现方式2-2、第一终端20的PHY层判断网络设备10调度的在n时刻的物理侧行链路共享信道(physical sidelink shared channle,PSSCH)的传输没有进行时,第一终端20的PHY层在n+Y时刻自动生成NACK,并将NACK递交给MAC实体。MAC实体接收到该NACK信息后,将对应的Sidelink HARQ进程的第一变量的值设置为第一值。其中,Y为第一终端20发送PSSCH和第二终端30通过物理侧行链路反馈信道(physical sidelink feedback channel,PSFCH)反馈对应的ACK/NACK信息的间隔。
具体的,针对情况2),本申请实施例中的步骤409可以通过以下方式实现:
实现方式3-1、第一终端20的MAC实体判断Sidelink HARQ进程的确认信息没有收到时,第一终端20的MAC实体自动将该Sidelink HARQ进程的第一变量的值设置为第一值,或者第一终端根据第一条件确定第一变量的值设置为第一值。也即如果第一终端20的MAC实体判断Sidelink HARQ进程的确认信息没有收到时,且Sidelink HARQ进程的第一数据包需要重传时,则第一终端20的MAC实体自动将该Sidelink HARQ进程的第一变量的值设置为第一值。如果第一终端20的MAC实体判断Sidelink HARQ进程的确认信息没有收到时,且Sindlink HARQ进程的第一数据包不需要重传时,则第一终端20的MAC实体自动将该Sindlink HARQ进程的第一变量的值设置为第二值。
实现方式3-2、当第一终端20的PHY层在n时刻传输sidelink HARQ进程的第一数据包后,如果第一终端20的PHY层在n+X时刻未收到sidelink HARQ进程的确认信息,第一终端20的PHY层自动生成NACK,并将NACK递交给第一终端20的MAC实体。第一终端20的MAC实体接收到该NACK后,将对应的sidelink HARQ进程的第一变量的值设置为第一值。
上述实施例主要描述了第一终端20未接收来自第二终端30的针对第一数据包的确认信息,和第一终端20接到来自第二终端30的针对第一数据包的确认信息的情况下,如果第一终端20确定第一数据包未被成功解码时,第一终端20确定第二侧行链路资源的过程,但是,在实际过程中,还可以存在第一终端20确定第一数据包被成功解码的情况,在这种情况下,6所示,本申请实施例提供的方法还可以包括步骤410,或者如图5所示本申请实施例提供的方法还可以包括步骤411:
步骤410、在第一终端20确定第二终端30成功解码第一数据包的情况下,第一终端20向网络设备10发送或不发送第二指示信息。该第二指示信息用于指示第二终端30成功解码第一数据包。
例如,第二指示信息可以为ACK。可选的,第二指示信息还可以包括用于指示Sidelink HARQ进程的进程号的信息。
通过步骤410,在第一终端20向网络设备10发送第二指示信息的情况下,可以使得网络设备10根据第二指示信息,确定第二终端30成功解码第一数据包。这样网络设备10后续便可以不再为第一终端20分配用于重传的第二侧行链路资源。
如果第一终端20和网络设备10提前协商好,如果第一终端20确定第一数据包被成功解码,则可以不用向网络设备10发送第二指示信息,这样可以节约传输第二指示信息的上行资源。也即如果第一终端20未向网络设备10发送第二指示信息时,网络设备10可以默认第二终端30成功解码第一数据包。这样网络设备10后续便可以不需要为第一终端20分配用于重传的第二侧行链路资源。
步骤411、在第一终端20确定第二终端30成功解码第一数据包的情况下,第一终端20释放第二侧行链路资源。该第二侧行链路资源为用于重新传输所述第一数据包的侧行链路资源;其中,第二侧行链路资源由网络设备10分配,或者为所述第一终端20在侧行链路资源池中预留的侧行链路资源。
步骤410和步骤411的区别在于,步骤410适用于网络设备10为第一终端20分配侧行链路资源的情况,步骤411适用于第一终端20自主选择侧行链路资源的情况。当然,步骤407还可以通过以下方式实现:在第一终端20确定第二终端30成功解码第一数据包的情况下,第一终端20在第二侧行链路资源传输第二数据包。也即在第二侧行链路资源进行新传,或者传输其他未被成功解码的数据包。
一方面,针对情况1,当第一终端20接收到第二终端30反馈的Sidelink HARQ进程的确认信息为ACK时,如果第二终端30已经预留了用于该Sidelink HARQ进程 重传的第二Sidelink资源,第一终端20释放预留的第二Sidelink资源。
另一方面,针对情况2,当第一终端20未接收到来自第二终端30的确认信息时,如果第一终端20确定第二终端30成功解码第一数据包,则如果第二终端30已经预留了用于该Sidelink HARQ进程重传的第二Sidelink资源,第一终端20释放预留的第二Sdelink资源。
作为一种可能的实现,步骤410或步骤411中,第一终端20确定第二终端30成功解码第一数据包,包括:在第一终端20向第二终端30发送第一数据包,但第一终端20未接收到来自第二终端30的确认信息的情况下,第一终端20确定第二终端30成功解码第一数据包。
也即针对情况2,如果第一终端20确定未接收到来自所述第二终端30的确认信息,则第一终端20可以确定第二终端30成功解码所述第一数据包。
具体的,为了提高第一终端20可以确定第二终端30成功解码所述第一数据包的准确性,在满足第二条件时,且在第一终端20向所述第二终端30发送所述第一数据包,但所述第一终端20未接收到来自所述第二终端30的所述确认信息的情况下,所述第一终端20确定所述第二终端30成功解码所述第一数据包;其中,所述第二条件包括以下任一个:第一数据包中的第一侧行链路逻辑信道被配置为不需要重传,其中,所述第一侧行链路逻辑信道为所述第一数据包中的优先级最高的侧行链路逻辑信道;第一终端被配置为不需要重传;第一终端确定从第二预设范围内生成的随机数小于第二门限值。
也即如果第一终端20确定在不满足第一条件时,如果第一终端20向所述第二终端30发送所述第一数据包,但所述第一终端20未接收到来自所述第二终端30的所述确认信息的情况下,所述第一终端20确定所述第二终端30成功解码所述第一数据包。也即针对情况2,如果第一终端20确定第一数据包不需要重传,则第一终端20确定所述第二终端30成功解码所述第一数据包。
示例性的,第一终端20具有第二门限值,该第二门限值可以为网络设备10为第一终端20配置的,或者第二门限值也可以为预先配置的。第二预设范围可以为[0,1]。可选的,第二门限值可以通过由网络设备10通过系统信息或者专用信令为第一终端20配置。第二门限值和第一门限值可以相同,也可以不相同。
示例性的,结合上述实现方式1,如果指示信息为第四值,则第一终端20向所述第二终端30发送所述第一数据包,但所述第一终端20未接收到来自所述第二终端30的所述确认信息的情况下,所述第一终端20确定所述第二终端30成功解码所述第一数据包。
示例性的,结合上述实现方式2,如果指示信息为第六值,则第一终端20向所述第二终端30发送所述第一数据包,但所述第一终端20未接收到来自所述第二终端30的所述确认信息的情况下,所述第一终端20确定所述第二终端30成功解码所述第一数据包。
示例性的,结合上述实现方式3、也即当第一终端发送了Sidelink HARQ进程m的MAC PDU,但未接收到第二终端30反馈的Sidelink HARQ进程m的确认信息时,第一终端在[0,1]范围内按均匀分布生成一个随机数。若从第二预设范围内生成的随机 数大于第二门限值,则第一终端20判断为不需要进行重传,第一终端20确定第二终端30成功解码第一数据包。
针对情况1,本申请实施例提供的方法,作为本申请的另一个实施例,如图5或图6所示,本申请实施例提供的方法还包括:
步骤412、第一终端20接收来自第二终端30的针对第一数据包的确认信息。确认信息指示第二终端30成功解码第一数据包。
例如,步骤412中的确认信息为ACK。
步骤413、第一终端20根据确认信息,确定第二终端30成功解码第一数据包。
需要说明的是,本申请实施例中如果第一终端20接收来自第二终端30的针对第一数据包的确认信息,在确认信息指示第二终端30成功解码第一数据包的情况下,如图5所示,第一终端20还需要执行步骤410。如图6所示,第一终端还需要执行步骤411。
无论第一终端20接收到确认信息还是未接收到确认信息的情况下,在第一终端20确定第二终端30成功解码第一数据包的情况下,作为本申请的另一个实施例,如图5或图6所示,本申请实施例提供的方法还包括:
步骤414、第一终端20确定侧行链路HARQ进程的第一变量的值为第二值,第二值用于表示第二终端成功解码所述第一数据包。
当第一终端20接收到第二终端30反馈的Sidelink HARQ进程的确认信息为ACK的情况下:
一方面,如果当第一终端20已经预留了用于该Sidelink HARQ进程重传的第二侧行链路资源,第一终端20释放第二侧行链路资源。可选的,第一终端20将Sidelink HARQ进程对应的第一变量的值设为第二值。
另一方面,第一终端20向网络设备发送第二指示信息。可选的,第一终端20将Sidelink HARQ进程对应的第一变量的值设为第二值。
需要说明的是,本申请实施例中步骤401、步骤4021、步骤4022、步骤409可以作为一个单独的实施例,用于实现第一终端20未接收到确认信息,且确定第二终端30未成功解码第一数据包时,第一终端20通过自主选择方式获取重新传输侧行链路资源的方案。
需要说明的是,本申请实施例中步骤401、步骤405a、步骤405b、步骤406、步骤403步骤404、步骤402,以及步骤409可以作为一个单独的实施例,用于实现第一终端20未接收到确认信息,且确定第二终端30未成功解码第一数据包时,第一终端20通过网络设备10调度的方式重新获取重新传输侧行链路资源的方案。
本申请实施例中步骤401、步骤411、步骤414可以作为一个单独的实施例,用于实现第一终端20未接收到确认信息,且确定第二终端30成功解码第一数据包时,如果第一终端再次接收到用于重传第一数据包的第二侧行链路资源,释放该第二侧行链路资源的方案。
本申请实施例中步骤401、步骤410、步骤411以及步骤414可以作为一个单独的实施例,用于实现第一终端20未接收到确认信息,且确定第二终端30成功解码第一数据包时,如果第一终端再次接收到用于重传第一数据包的第二侧行链路资源,释放 该第二侧行链路资源的方案。
本申请实施例中步骤407、步骤408、步骤4021以及步骤4022、步骤409、或者()可以作为一个单独的实施例,用于实现第一终端20接收到确认信息,且确定第二终端30未成功解码第一数据包时,第一终端20通过自主选择方式获取重新传输侧行链路资源的方案。
本申请实施例中步骤412、步骤413、步骤411以及步骤414可以作为一个单独的实施例,用于实现第一终端20接收到确认信息,且确定第二终端30成功解码第一数据包时,如果第一终端再次接收到用于重传第一数据包的第二侧行链路资源,释放该第二侧行链路资源的方案。
本申请实施例中步骤407、步骤408、步骤405a、步骤405b、步骤406、步骤403、步骤404、步骤402以及步骤409可以作为一个单独的实施例,用于实现第一终端20接收到确认信息,且确定第二终端30未成功解码第一数据包时,第一终端20通过网络设备10调度的方式重新获取重新传输侧行链路资源的方案。
本申请实施例中步骤412、步骤413、步骤410、步骤411以及步骤414可以作为一个单独的实施例,用于实现第一终端20接收到确认信息,且确定第二终端30成功解码第一数据包时,如果第一终端再次接收到用于重传第一数据包的第二侧行链路资源,释放该第二侧行链路资源的方案。
当然,上述各种描述的方案也可以作为一个整体来实现,本申请实施例对此不作限定。
本申请实施例描述的各个方案应用于V2X场景时,可以适用于如下领域:无人驾驶(unmanned driving)、自动驾驶(automated driving/ADS)、辅助驾驶(driver assistance/ADAS)、智能驾驶(intelligent driving)、网联驾驶(connected driving)、智能网联驾驶(Intelligent network driving)、汽车共享(car sharing)。
上述主要从各个网元之间交互的角度对本申请实施例的方案进行了介绍。可以理解的是,各个网元,例如第一终端等为了实现上述功能,其包括了执行各个功能相应的硬件结构和/或软件模块。本领域技术人员应该很容易意识到,结合本文中所公开的实施例描述的各示例的单元及算法步骤,本申请能够以硬件或硬件和计算机软件的结合形式来实现。某个功能究竟以硬件还是计算机软件驱动硬件的方式来执行,取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能,但是这种实现不应认为超出本申请的范围。
本申请实施例可以根据上述方法示例第一终端进行功能单元的划分,例如,可以对应各个功能划分各个功能单元,也可以将两个或两个以上的功能集成在一个处理单元中。上述集成的单元既可以采用硬件的形式实现,也可以采用软件功能单元的形式实现。需要说明的是,本申请实施例中对单元的划分是示意性的,仅仅为一种逻辑功能划分,实际实现时可以有另外的划分方式。
上面结合图1至图6,对本申请实施例的方法进行了说明,下面对本申请实施例提供的执行上述方法的确定侧行链路资源的装置进行描述。本领域技术人员可以理解,方法和装置可以相互结合和引用,本申请实施例提供的确定侧行链路资源的装置可以执行上述确定侧行链路资源的方法中由第一终端执行的步骤。
在采用集成的单元的情况下,图7示出了上述实施例中所涉及的一种确定侧行链路资源的装置,该确定侧行链路资源的装置可以包括:处理单元101。可选的,该装置还可以包括通信单元102。
该确定侧行链路资源的装置为第一终端,或者为应用于第一终端中的芯片。在这种情况下,处理单元101,用于支持该确定侧行链路资源的装置执行上述实施例中由第一终端执行图4中的步骤401和步骤402。
在一种可能的实施例中,处理单元101,还用于支持确定侧行链路资源的装置执行上述实施例中由第一终端执行步骤4021、步骤4022、步骤407、步骤408、步骤412、步骤413、步骤409、步骤411、步骤414、步骤409、步骤410。
在一种可能的实施例中,通信单元102,用于支持确定侧行链路资源的装置执行上述实施例中由第一终端执行步骤405a、步骤404、步骤405b。
在采用集成的单元的情况下,图8示出了上述实施例中所涉及的确定侧行链路资源的装置的一种可能的逻辑结构示意图。该确定侧行链路资源的装置包括:处理模块112和通信模块113。处理模块112用于对确定侧行链路资源的装置的动作进行控制管理,例如,处理模块112用于执行在确定侧行链路资源的装置进行信息/数据处理的步骤。通信模块113用于支持确定侧行链路资源的装置进行信息/数据发送或者接收的步骤。
在一种可能的实施例中,确定侧行链路资源的装置还可以包括存储模块111,用于存储确定侧行链路资源的装置可的程序代码和数据。
该确定侧行链路资源的装置为第一终端,或者为应用于第一终端中的芯片。在这种情况下,处理模块112,用于支持该确定侧行链路资源的装置执行上述实施例中由第一终端执行图4中的步骤401和步骤402。
在一种可能的实施例中,处理模块112,还用于支持确定侧行链路资源的装置执行上述实施例中由第一终端执行步骤4021、步骤4022、步骤407、步骤408、步骤412、步骤413、步骤409、步骤411、步骤414、步骤409、步骤410。
在一种可能的实施例中,通信模块113,用于支持确定侧行链路资源的装置执行上述实施例中由第一终端执行步骤405a、步骤404、步骤405b。
其中,处理模块112可以是处理器或控制器,例如可以是中央处理器单元,通用处理器,数字信号处理器,专用集成电路,现场可编程门阵列或者其他可编程逻辑器件、晶体管逻辑器件、硬件部件或者其任意组合。其可以实现或执行结合本申请公开内容所描述的各种示例性的逻辑方框,模块和电路。处理器也可以是实现计算功能的组合,例如包含一个或多个微处理器组合,数字信号处理器和微处理器的组合等等。通信模块113可以是收发器、收发电路或通信接口等。存储模块111可以是存储器。
当处理模块112为处理器41或处理器45,通信模块113为收发器43时,存储模块111为存储器42时,本申请所涉及的确定侧行链路资源的装置可以为图2所示的通信设备。
如图2所示的通信设备为第一终端,或者为应用于第一终端中的芯片。在这种情况下,处理器41和处理器45,用于支持该如图2所示的通信设备执行上述实施例中由第一终端执行图4中的步骤401和步骤402。
在一种可能的实施例中,处理器41和处理器45,还用于支持如图2所示的通信设备执行上述实施例中由第一终端执行步骤4021、步骤4022、步骤407、步骤408、步骤412、步骤413、步骤409、步骤411、步骤414、步骤409、步骤410。
在一种可能的实施例中,收发器43,用于支持如图2所示的通信设备执行上述实施例中由第一终端执行步骤405a、步骤404、步骤405b。
图9是本申请实施例提供的芯片150的结构示意图。芯片150包括一个或两个以上(包括两个)处理器1510和通信接口1530。
可选的,该芯片150还包括存储器1540,存储器1540可以包括只读存储器和随机存取存储器,并向处理器1510提供操作指令和数据。存储器1540的一部分还可以包括非易失性随机存取存储器(non-volatile random access memory,NVRAM)。
在一些实施方式中,存储器1540存储了如下的元素,执行模块或者数据结构,或者他们的子集,或者他们的扩展集。
在本申请实施例中,通过调用存储器1540存储的操作指令(该操作指令可存储在操作系统中),执行相应的操作。
一种可能的实现方式中为:第一终端所用的芯片的结构类似,不同的装置可以使用不同的芯片以实现各自的功能。
处理器1510控制第一终端中任一个的处理操作,处理器1510还可以称为中央处理单元(central processing unit,CPU)。
存储器1540可以包括只读存储器和随机存取存储器,并向处理器1510提供指令和数据。存储器1540的一部分还可以包括NVRAM。例如应用中存储器1540、通信接口1530以及存储器1540通过总线系统1520耦合在一起,其中总线系统1520除包括数据总线之外,还可以包括电源总线、控制总线和状态信号总线等。但是为了清楚说明起见,在图9中将各种总线都标为总线系统1520。
上述本申请实施例揭示的方法可以应用于处理器1510中,或者由处理器1510实现。处理器1510可能是一种集成电路芯片,具有信号的处理能力。在实现过程中,上述方法的各步骤可以通过处理器1510中的硬件的集成逻辑电路或者软件形式的指令完成。上述的处理器1510可以是通用处理器、数字信号处理器(digital signal processing,DSP)、ASIC、现成可编程门阵列(field-programmable gate array,FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件。可以实现或者执行本申请实施例中的公开的各方法、步骤及逻辑框图。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。结合本申请实施例所公开的方法的步骤可以直接体现为硬件译码处理器执行完成,或者用译码处理器中的硬件及软件模块组合执行完成。软件模块可以位于随机存储器,闪存、只读存储器,可编程只读存储器或者电可擦写可编程存储器、寄存器等本领域成熟的存储介质中。该存储介质位于存储器1540,处理器1510读取存储器1540中的信息,结合其硬件完成上述方法的步骤。
一种可能的实现方式中,通信接口1530用于执行图4-图6所示的实施例中的第一终端的接收和发送的步骤。处理器1510用于执行图4-图6所示的实施例中的第一终端的处理的步骤。
以上通信单元可以是该装置的一种通信接口,用于从其它装置接收信号。例如, 当该装置以芯片的方式实现时,该通信单元是该芯片用于从其它芯片或装置接收信号或发送信号的通信接口。
本申请实施例提供一种计算机可读存储介质,计算机可读存储介质中存储有指令,当指令被运行时,实现如图4、图5或图6中第一终端的功能。
本申请实施例提供一种包括指令的计算机程序产品,计算机程序产品中包括指令,当指令被运行时,实现如图4、图5或图6中第一终端的功能。
本申请实施例提供一种芯片,该芯片应用于第一终端中,芯片包括至少一个处理器和通信接口,通信接口和至少一个处理器耦合,处理器用于运行指令,以实现如图4、图5、图6中第一终端的功能。
本申请实施例提供一种通信系统,该通信系统包括第一终端、第二终端以及网络设备10,其中,第一终端用于执行图4~图6中由第一终端执行的步骤,网络设备10用于执行图4~图6中由网络设备10执行的步骤。
在上述实施例中,可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时,可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机程序或指令。在计算机上加载和执行所述计算机程序或指令时,全部或部分地执行本申请实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、网络设备、用户设备或者其它可编程装置。所述计算机程序或指令可以存储在计算机可读存储介质中,或者从一个计算机可读存储介质向另一个计算机可读存储介质传输,例如,所述计算机程序或指令可以从一个网站站点、计算机、服务器或数据中心通过有线或无线方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是集成一个或多个可用介质的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质,例如,软盘、硬盘、磁带;也可以是光介质,例如,数字视频光盘(digital video disc,DVD);还可以是半导体介质,例如,固态硬盘(solid state drive,SSD)。
尽管在此结合各实施例对本申请进行了描述,然而,在实施所要求保护的本申请过程中,本领域技术人员通过查看附图、公开内容、以及所附权利要求书,可理解并实现公开实施例的其他变化。在权利要求中,“包括”(comprising)一词不排除其他组成部分或步骤,“一”或“一个”不排除多个的情况。单个处理器或其他单元可以实现权利要求中列举的若干项功能。相互不同的从属权利要求中记载了某些措施,但这并不表示这些措施不能组合起来产生良好的效果。
尽管结合具体特征及其实施例对本申请进行了描述,显而易见的,在不脱离本申请的精神和范围的情况下,可对其进行各种修改和组合。相应地,本说明书和附图仅仅是所附权利要求所界定的本申请的示例性说明,且视为已覆盖本申请范围内的任意和所有修改、变化、组合或等同物。显然,本领域的技术人员可以对本申请进行各种改动和变型而不脱离本申请的精神和范围。这样,倘若本申请的这些修改和变型属于本申请权利要求及其等同技术的范围之内,则本申请也意图包括这些改动和变型在内。
Claims (63)
- 一种确定侧行链路资源的方法,其特征在于,包括:当第一通信装置未使用第一侧行链路资源向第二通信装置发送第一数据包,或,所述第一通信装置使用所述第一侧行链路资源向所述第二通信装置发送所述第一数据包,但所述第一通信装置未接收到来自所述第二通信装置的针对所述第一数据包的确认信息时,所述第一通信装置向网络设备反馈第一指示信息;所述第一指示信息用于指示所述第二通信装置未成功解码所述第一数据包;所述第一侧行链路资源为所述网络设备为所述第一通信装置配置的侧行链路资源,所述确认信息用于指示所述第二通信装置是否成功解码所述第一数据包。
- 根据权利要求1所述的方法,其特征在于,所述方法还包括:所述第一通信装置确定所述第二终端装置未成功解码所述第一数据包。
- 根据权利要求2所述的方法,其特征在于,在满足第一条件时,且在所述第一通信装置使用所述第一侧行链路资源向所述第二通信装置发送所述第一数据包,但所述第一通信装置未接收到来自所述第二通信装置的针对所述第一数据包的确认信息的情况下,所述第一通信装置确定所述第二通信装置未成功解码所述第一数据包;其中,所述第一条件,包括以下中的任一个或多个:所述第一数据包中的第一侧行链路逻辑信道被配置为需要重传,其中,所述第一侧行链路逻辑信道为所述第一数据包中的优先级最高的侧行链路逻辑信道;所述第一通信装置被配置为需要重传;所述第一通信装置确定所述第一通信装置从第一预设范围内生成的随机数大于第一门限值。
- 根据权利要求2所述的方法,其特征在于,所述方法还包括:所述第一通信装置接收来自所述第二通信装置的所述确认信息;所述第一通信装置确定所述第二通信装置未成功解码所述第一数据包,包括:在所述确认消息用于指示所述第二通信装置未成功解码所述第一数据包的情况下,所述第一通信装置确定所述第二通信装置未成功解码所述第一数据包。
- 根据权利要求2-4任一项所述的方法,其特征在于,所述方法还包括:所述第一通信装置确定侧行链路混合自动重传请求HARQ进程的第一变量的值为第一值,所述第一值用于表示所述第二通信装置未成功解码所述第一数据包,所述侧行链路HARQ进程是用于传输所述第一数据包的HARQ进程。
- 根据权利要求2-5任一项所述的方法,其特征在于,所述方法还包括:所述第一通信装置接收来自所述网络设备的第一配置消息,所述第一配置消息包括与侧行链路混合自动重传请求HARQ进程关联的侧行链路资源,所述与侧行HARQ进程关联的侧行链路资源用于所述第一通信装置重新传输所述第一数据包。
- 根据权利要求1所述的方法,其特征在于,在所述第一通信装置向所述第二通信装置发送所述第一数据包,但所述第一通信装置未接收到来自所述第二通信装置的针对所述第一数据包的确认信息的情况下,所述方法还包括:所述第一通信装置确定所述第二通信装置成功解码所述第一数据包。
- 根据权利要求7所述的方法,其特征在于,所述方法还包括:所述第一通信装置向所述网络设备发送或不发送第二指示信息,所述第二指示信息用于指示所述第二通信装置成功解码所述第一数据包。
- 根据权利要求7或8所述的方法,其特征在于,所述方法还包括:所述第一通信装置释放第二侧行链路资源,所述第二侧行链路资源为用于重新传输所述第一数据包的侧行链路资源;其中,所述第二侧行链路资源由网络设备分配,或者为所述第一通信装置在侧行链路资源池中预留的侧行链路资源。
- 根据权利要求7-9任一项所述的方法,其特征在于,所述第一通信装置确定所述第二通信装置成功解码所述第一数据包,包括:在满足第二条件时,且在所述第一通信装置向所述第二通信装置发送所述第一数据包,但所述第一通信装置未接收到来自所述第二通信装置的所述确认信息的情况下,所述第一通信装置确定所述第二通信装置成功解码所述第一数据包;其中,所述第二条件包括以下任一个:所述第一数据包中的第一侧行链路逻辑信道被配置为不需要重传,其中,所述第一侧行链路逻辑信道为所述第一数据包中的优先级最高的侧行链路逻辑信道;所述第一通信装置被配置为不需要重传;所述第一通信装置确定所述第一通信装置在第二预设范围内生成的随机数小于第二门限值。
- 根据权利要求7-9任一项所述的方法,其特征在于,所述方法还包括:所述第一通信装置接收来自所述第二通信装置的针对所述第一数据包的确认信息;所述确认信息指示所述第二通信装置是否成功解码所述第一数据包;所述第一通信装置确定所述第二通信装置成功解码所述第一数据包,包括:在所述确认信息指示所述第二通信装置成功解码所述第一数据包的情况下,所述第一通信装置确定所述第二通信装置成功解码所述第一数据包。
- 根据权利要求7-11任一项所述的方法,其特征在于,所述方法还包括:所述第一通信装置确定侧行链路HARQ进程的第一变量的值为第二值,所述第二值用于表示所述第二通信装置成功解码所述第一数据包,所述侧行链路HARQ进程是用于传输所述第一数据包的HARQ进程。
- 一种通信装置,其特征在于,包括:发送单元,用于当第一通信装置未使用第一侧行链路资源向第二通信装置发送第一数据包,或,所述第一通信装置使用所述第一侧行链路资源向所述第二通信装置发送所述第一数据包,但所述第一通信装置未接收到来自所述第二通信装置的针对所述第一数据包的确认信息时,向网络设备反馈第一指示信息;所述第一指示信息用于指示所述第二通信装置未成功解码所述第一数据包;所述第一侧行链路资源为所述网络设备为所述第一通信装置配置的侧行链路资源,所述确认信息用于指示所述第二通信装置是否成功解码所述第一数据包。
- 根据权利要求13所述的通信装置,其特征在于,所述通信装置还包括:处理单元,用于确定所述第二终端装置未成功解码所述第一数据包。
- 根据权利要求14所述的通信装置,其特征在于,在满足第一条件时,且在所述第一通信装置使用所述第一侧行链路资源向所述第二通信装置发送所述第一数据包, 但所述第一通信装置未接收到来自所述第二通信装置的针对所述第一数据包的确认信息的情况下,所述处理单元确定所述第二通信装置未成功解码所述第一数据包;其中,所述第一条件,包括以下中的任一个或多个:所述第一数据包中的第一侧行链路逻辑信道被配置为需要重传,其中,所述第一侧行链路逻辑信道为所述第一数据包中的优先级最高的侧行链路逻辑信道;所述第一通信装置被配置为需要重传;所述第一通信装置确定所述第一通信装置从第一预设范围内生成的随机数大于第一门限值。
- 根据权利要求14所述的通信装置,其特征在于,所述通信装置还包括:接收单元,用于接收来自所述第二通信装置的所述确认信息;所述处理单元,具体用于在所述确认消息用于指示所述第二通信装置未成功解码所述第一数据包的情况下,确定所述第二通信装置未成功解码所述第一数据包。
- 根据权利要求14-16任一项所述的通信装置,其特征在于,所述处理单元,还用于:确定侧行链路混合自动重传请求HARQ进程的第一变量的值为第一值,所述第一值用于表示所述第二通信装置未成功解码所述第一数据包,所述侧行链路HARQ进程是用于传输所述第一数据包的HARQ进程。
- 根据权利要求14-17任一项所述的通信装置,其特征在于,所述通信装置还包括:接收单元,用于接收来自所述网络设备的第一配置消息,所述第一配置消息包括与侧行链路混合自动重传请求HARQ进程关联的侧行链路资源,所述与侧行HARQ进程关联的侧行链路资源用于所述第一通信装置重新传输所述第一数据包。
- 根据权利要求13所述的通信装置,其特征在于,在所述第一通信装置向所述第二通信装置发送所述第一数据包,但所述第一通信装置未接收到来自所述第二通信装置的针对所述第一数据包的确认信息的情况下,所述通信装置还包括:处理单元,用于确定所述第二通信装置成功解码所述第一数据包。
- 根据权利要求19所述的通信装置,其特征在于,所述发送单元,还用于:向所述网络设备发送或不发送第二指示信息,所述第二指示信息用于指示所述第二通信装置成功解码所述第一数据包。
- 根据权利要求19或20所述的通信装置,其特征在于,所述处理单元,还用于:释放第二侧行链路资源,所述第二侧行链路资源为用于重新传输所述第一数据包的侧行链路资源;其中,所述第二侧行链路资源由网络设备分配,或者为所述第一通信装置在侧行链路资源池中预留的侧行链路资源。
- 根据权利要求19-21任一项所述的通信装置,其特征在于,所述处理单元,具体用于在满足第二条件时,且在所述第一通信装置向所述第二通信装置发送所述第一数据包,但所述第一通信装置未接收到来自所述第二通信装置的所述确认信息的情况下,确定所述第二通信装置成功解码所述第一数据包;其中,所述第二条件包括以下任一个:所述第一数据包中的第一侧行链路逻辑信道被配置为不需要重传,其中,所述第 一侧行链路逻辑信道为所述第一数据包中的优先级最高的侧行链路逻辑信道;所述第一通信装置被配置为不需要重传;所述第一通信装置确定所述第一通信装置在第二预设范围内生成的随机数小于第二门限值。
- 根据权利要求19-21任一项所述的通信装置,其特征在于,所述通信装置,还包括:接收单元,用于接收来自所述第二通信装置的针对所述第一数据包的确认信息;所述确认信息指示所述第二通信装置是否成功解码所述第一数据包;所述处理单元,还用于在所述确认信息指示所述第二通信装置成功解码所述第一数据包的情况下,确定所述第二通信装置成功解码所述第一数据包。
- 根据权利要求19-23任一项所述的通信装置,其特征在于,所述处理单元,还用于确定侧行链路HARQ进程的第一变量的值为第二值,所述第二值用于表示所述第二通信装置成功解码所述第一数据包,所述侧行链路HARQ进程是用于传输所述第一数据包的HARQ进程。
- 一种通信装置,其特征在于,所述通信装置包括至少一个处理器和通信接口,所述处理器以及所述通信接口用于支持所述通信装置执行如权利要求1-12中任一项所述的确定侧行链路资源的方法。
- 一种芯片系统,其特征在于,所述芯片系统包括至少一个处理器和通信接口,所述通信接口和所述至少一个处理器耦合,所述至少一个处理器用于运行计算机程序或指令,以实现如权利要求1-12中任一项所述的确定侧行链路资源的方法,所述通信接口用于与所述芯片系统之外的其它模块进行通信。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有指令,当所述指令被运行时,实现上述权利要求1-12中任一项所述的确定侧行链路资源的方法。
- 一种确定侧行链路资源的方法,其特征在于,包括:第一通信装置确定未接收到来自第二通信装置的确认信息;所述确认信息用于指示所述第二通信装置是否成功解码第一数据包;所述第一数据包为所述第一通信装置在第一侧行链路资源上传输的数据包;在所述第一通信装置确定所述第二通信装置未成功解码所述第一数据包的情况下,所述第一通信装置获取用于重新传输所述第一数据包的第二侧行链路资源。
- 根据权利要求28所述的方法,其特征在于,所述第一通信装置获取用于重新传输所述第一数据包的侧行链路资源,包括:所述第一通信装置触发资源重选;所述第一通信装置从侧行链路资源池中选择所述第二侧行链路资源。
- 根据权利要求29所述的方法,其特征在于,所述第一通信装置触发资源重选,包括:所述第一通信装置确定所述第二通信装置未成功解码所述第一数据包时,所述第一通信装置在n时刻触发资源重选,或者,所述第一通信装置在n+X时刻触发资源重选,其中,X为所述第一通信装 置发送所述第一数据包的时刻和所述第一通信装置接收所述第二通信装置反馈所述确认信息的时刻之间的间隔,所述n时刻为所述第一通信装置发送所述第一数据包的时刻。
- 根据权利要求28所述的方法,其特征在于,所述第一通信装置获取用于重新传输所述第一数据包的侧行链路资源,包括:所述第一通信装置接收来自网络设备的第一配置消息,所述第一配置消息包括与所述侧行链路HARQ进程关联的侧行链路资源。
- 根据权利要求31所述的方法,其特征在于,所述方法还包括:所述第一通信装置向所述网络设备反馈第一指示信息,或者,所述第一通信装置不向所述网络设备反馈第一指示信息;所述第一指示信息指示所述第二通信装置未成功解码所述第一数据包。
- 根据权利要求28-32任一项所述的方法,其特征在于,在满足以下条件时,所述第一通信装置确定未接收到来自第二通信装置的针对第一数据包的确认信息;所述第一通信装置未向所述第二通信装置发送所述第一数据包,或者,所述第一通信装置向所述第二通信装置发送所述第一数据包,但所述第一通信装置未接收到来自所述第二通信装置的所述确认信息。
- 根据权利要求28-33任一项所述的方法,其特征在于,所述第一通信装置确定所述第二通信装置未成功解码所述第一数据包,包括:在所述第一通信装置向所述第二通信装置发送所述第一数据包,但所述第一通信装置未接收到来自所述第二通信装置的所述确认信息的情况下,所述第一通信装置确定所述第二通信装置未成功解码所述第一数据包。
- 根据权利要求28-33任一项所述的方法,其特征在于,在满足第一条件时,且在所述第一通信装置向所述第二通信装置发送所述第一数据包,但所述第一通信装置未接收到来自所述第二通信装置的所述确认信息的情况下,所述第一通信装置确定所述第二通信装置未成功解码所述第一数据包;其中,所述第一条件,包括以下中的任一个或多个:所述第一数据包中的第一侧行链路逻辑信道被配置为需要重传,其中,所述第一侧行链路逻辑信道为所述第一数据包中的优先级最高的侧行链路逻辑信道;所述第一通信装置被配置为需要重传;所述第一通信装置确定所述第一通信装置从第一预设范围内生成的随机数大于第一门限值。
- 根据权利要求28所述的方法,其特征在于,所述方法还包括:所述第一通信装置接收来自所述第二通信装置的针对所述第一数据包的所述确认信息,所述确认信息指示所述第二通信装置未成功解码所述第一数据包;所述第一通信装置确定所述第二通信装置未成功解码所述第一数据包,包括:所述第一通信装置根据所述确认信息,确定所述第二通信装置未成功解码所述第一数据包。
- 根据权利要求28-36任一项所述的方法,其特征在于,所述第一数据包通过侧行链路混合自动重复请求HARQ进程传输,所述方法还包括:所述第一通信装置确定所述侧行链路HARQ进程的第一变量的值为第一值,所述第一值用于表示所述第二通信装置未成功解码所述第一数据包。
- 根据权利要求28-37任一项所述的方法,其特征在于,所述方法还包括:在所述第一通信装置确定所述第二通信装置成功解码所述第一数据包的情况下,所述第一通信装置向网络设备发送或不发送第二指示信息,所述第二指示信息用于指示所述第二通信装置成功解码所述第一数据包。
- 根据权利要求28-37任一项所述的方法,其特征在于,所述方法还包括:在所述第一通信装置确定所述第二通信装置成功解码所述第一数据包的情况下,所述第一通信装置释放第二侧行链路资源,所述第二侧行链路资源为用于重新传输所述第一数据包的侧行链路资源;其中,所述第二侧行链路资源由网络设备分配,或者为所述第一通信装置在侧行链路资源池中预留的侧行链路资源。
- 根据权利要求38或39所述的方法,其特征在于,所述第一通信装置确定所述第二通信装置成功解码所述第一数据包,包括:在所述第一通信装置向所述第二通信装置发送所述第一数据包,但所述第一通信装置未接收到来自所述第二通信装置的所述确认信息的情况下,所述第一通信装置确定所述第二通信装置成功解码所述第一数据包。
- 根据权利要求38或39所述的方法,其特征在于,所述第一通信装置确定所述第二通信装置成功解码所述第一数据包,包括:在满足第二条件时,且在所述第一通信装置向所述第二通信装置发送所述第一数据包,但所述第一通信装置未接收到来自所述第二通信装置的所述确认信息的情况下,所述第一通信装置确定所述第二通信装置成功解码所述第一数据包;其中,所述第二条件包括以下任一个:所述第一数据包中的第一侧行链路逻辑信道被配置为不需要重传,其中,所述第一侧行链路逻辑信道为所述第一数据包中的优先级最高的侧行链路逻辑信道;所述第一通信装置被配置为不需要重传;所述第一通信装置确定所述第一通信装置在第二预设范围内生成的随机数小于第二门限值。
- 根据权利要求38或39所述的方法,其特征在于,所述方法还包括:所述第一通信装置接收来自所述第二通信装置的针对所述第一数据包的所述确认信息;所述确认信息指示所述第二通信装置成功解码所述第一数据包;所述第一通信装置确定所述第二通信装置成功解码所述第一数据包,包括:所述第一通信装置根据所述确认信息,确定所述第二通信装置成功解码所述第一数据包。
- 根据权利要求38-42任一项所述的方法,其特征在于,所述第一数据包通过侧行链路HARQ进程传输,所述方法还包括:所述第一通信装置确定所述侧行链路HARQ进程的第一变量的值为第二值,所述第二值用于表示所述第二通信装置成功解码所述第一数据包。
- 一种通信装置,其特征在于,包括:包括处理器和收发器,所述处理器,用于确定所述收发器未接收到来自第二通信装置的针对第一数据包 的确认信息,所述确认信息用于指示所述第二通信装置是否成功解码所述第一数据包;所述第一数据包为所述收发器在第一侧行链路资源上传输的数据包;所述处理器,用于在确定所述第二通信装置未成功解码所述第一数据包的情况下,获取用于重新传输所述第一数据包的第二侧行链路资源。
- 根据权利要求44所述的装置,其特征在于,所述处理器,用于:触发资源重选;以及从侧行链路资源池中选择所述第二侧行链路资源。
- 根据权利要求45所述的装置,其特征在于,所述处理器具体用于:确定所述第二通信装置未成功解码所述第一数据包时,在n时刻触发资源重选;或者,在n+X时刻触发资源重选,其中,X为所述收发器用于发送所述第一数据包的时刻和所述收发器用于接收所述第二通信装置反馈所述确认信息的时刻之间的间隔,所述n时刻为所述收发器用于发送所述第一数据包的时刻。
- 根据权利要求44所述的装置,其特征在于,所述收发器还用于:接收来自网络设备的第一配置消息,所述第一配置消息包括与所述侧行链路HARQ进程关联的侧行链路资源。
- 根据权利要求47所述的装置,其特征在于,所述收发器,还用于:向所述网络设备反馈第一指示信息,或者,不向所述网络设备反馈第一指示信息;所述第一指示信息指示所述第二通信装置未成功解码所述第一数据包。
- 根据权利要求44-48任一项所述的装置,其特征在于,在满足以下条件中至少一个时,所述处理器,用于确定所述收发器未接收到来自第二通信装置的针对第一数据包的确认信息;所述条件包括:所述收发器未向所述第二通信装置发送所述第一数据包,或者,所述收发器向所述第二通信装置发送所述第一数据包,但所述收发器未接收到来自所述第二通信装置的所述确认信息。
- 根据权利要求44-49任一项所述的装置,其特征在于,所述处理器,还用于在所述收发器向所述第二通信装置发送所述第一数据包,但所述收发器未接收到来自所述第二通信装置的所述确认信息的情况下,确定所述第二通信装置未成功解码所述第一数据包。
- 根据权利要求44-49任一项所述的装置,其特征在于,所述处理器,还用于在满足第一条件时,且在所述收发器向所述第二通信装置发送所述第一数据包,但所述收发器未接收到来自所述第二通信装置的所述确认信息的情况下,确定所述第二通信装置未成功解码所述第一数据包;其中,所述第一条件,包括以下中的任一个或多个:所述第一数据包中的第一侧行链路逻辑信道被配置为需要重传,其中,所述第一侧行链路逻辑信道为所述第一数据包中的优先级最高的侧行链路逻辑信道;所述装置被配置为需要重传;所述处理器确定所述处理器从第一预设范围内生成的随机数大于第一门限值。
- 根据权利要求44所述的装置,其特征在于,收发器,还用于接收来自所述第 二通信装置的针对所述第一数据包的所述确认信息,所述确认信息指示所述第二通信装置未成功解码所述第一数据包;所述处理器,用于根据所述确认信息,确定所述第二通信装置未成功解码所述第一数据包。
- 根据权利要求44-52任一项所述的装置,其特征在于,所述第一数据包通过侧行链路混合自动重复请求HARQ进程传输,所述处理器,还用于确定所述侧行链路HARQ进程的第一变量的值为第一值,所述第一值用于表示所述第二通信装置未成功解码所述第一数据包。
- 根据权利要求44-53任一项所述的装置,其特征在于,在所述处理器,还用于确定所述第二通信装置成功解码所述第一数据包的情况下,所述收发器,还用于向网络设备发送或不发送第二指示信息,所述第二指示信息用于指示所述第二通信装置成功解码所述第一数据包。
- 根据权利要求44-53任一项所述的装置,其特征在于,在所述处理器,还用于确定所述第二通信装置成功解码所述第一数据包的情况下,释放第二侧行链路资源,所述第二侧行链路资源为用于重新传输所述第一数据包的侧行链路资源;其中,所述第二侧行链路资源由网络设备分配,或者为所述处理器在侧行链路资源池中预留的侧行链路资源。
- 根据权利要求54或55所述的装置,其特征在于,所述处理器,用于在确定所述收发器向所述第二通信装置发送所述第一数据包,但所述收发器未接收到来自所述第二通信装置的所述确认信息的情况下,确定所述第二通信装置成功解码所述第一数据包。
- 根据权利要求54或55所述的装置,其特征在于,所述处理器,用于在确定满足第二条件时,且在所述收发器向所述第二通信装置发送所述第一数据包,但所述收发器未接收到来自所述第二通信装置的所述确认信息的情况下,确定所述第二通信装置成功解码所述第一数据包;其中,所述第二条件包括以下任一个:所述第一数据包中的第一侧行链路逻辑信道被配置为不需要重传,其中,所述第一侧行链路逻辑信道为所述第一数据包中的优先级最高的侧行链路逻辑信道;所述装置被配置为不需要重传;所述处理器确定从第二预设范围内生成的随机数小于第二门限值。
- 根据权利要求56或57所述的装置,其特征在于,所述收发器,还用于接收来自所述第二通信装置的针对所述第一数据包的所述确认信息;所述确认信息指示所述第二通信装置成功解码所述第一数据包;所述处理器,还用于根据所述确认信息,确定所述第二通信装置成功解码所述第一数据包。
- 根据权利要求54-58任一项所述的装置,其特征在于,所述第一数据包通过侧行链路HARQ进程传输,所述处理器,还用于确定所述侧行链路HARQ进程的第一变量的值为第二值,所述第二值用于表示所述第二通信装置成功解码所述第一数据包。
- 根据权利要求44-59任一项所述的装置,其特征在于,所述装置为第一终端或设置于所述第一终端上的芯片,所述第二通信装置为第二终端或设置于所述第二终 端上的芯片。
- 一种芯片,其特征在于,所述芯片包括至少一个处理器和通信接口,所述通信接口和所述至少一个处理器耦合,所述至少一个处理器用于运行计算机程序或指令,以实现如权利要求28-43中任一项所述的确定侧行链路资源的方法,所述通信接口用于与所述芯片之外的其它模块进行通信。
- 一种计算机可读存储介质,其特征在于,所述计算机可读存储介质中存储有指令,当所述指令被运行时,实现上述权利要求28-43中任一项所述的确定侧行链路资源的方法。
- 一种通信系统,其特征在于,包括:如权利要求44-60任一项所述的通信装置以及第二通信装置。
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17/630,204 US20220295450A1 (en) | 2019-08-16 | 2020-08-17 | Sidelink resource determining method, apparatus, and system |
EP20855396.6A EP3993296A4 (en) | 2019-08-16 | 2020-08-17 | METHOD, DEVICE AND SYSTEM FOR DETERMINING LATERAL BINDING RESOURCE |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201910760444.8A CN112398591B (zh) | 2019-08-16 | 2019-08-16 | 一种确定侧行链路资源的方法、装置以及系统 |
CN201910760444.8 | 2019-08-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2021032064A1 true WO2021032064A1 (zh) | 2021-02-25 |
Family
ID=74602907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CN2020/109626 WO2021032064A1 (zh) | 2019-08-16 | 2020-08-17 | 一种确定侧行链路资源的方法、装置以及系统 |
Country Status (4)
Country | Link |
---|---|
US (1) | US20220295450A1 (zh) |
EP (1) | EP3993296A4 (zh) |
CN (2) | CN112398591B (zh) |
WO (1) | WO2021032064A1 (zh) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021086029A1 (en) * | 2019-10-29 | 2021-05-06 | Lg Electronics Inc. | Logical channel prioritization based on harq feedback |
CN115150902B (zh) * | 2021-03-30 | 2024-04-02 | 大唐移动通信设备有限公司 | 资源重选方法、终端及处理器可读存储介质 |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101119183A (zh) * | 2007-09-06 | 2008-02-06 | 上海华为技术有限公司 | 重传控制方法及传输设备 |
US20170215183A1 (en) * | 2016-01-22 | 2017-07-27 | Qualcomm Incorporated | Hybrid automatic repeat request feedback for unicast sidelink communications |
US20180287744A1 (en) * | 2017-03-30 | 2018-10-04 | Qualcomm Incorporated | Retransmission indication based on an acknowledgement based feedback scheme for wireless communication |
CN111148077A (zh) * | 2018-11-02 | 2020-05-12 | 华为技术有限公司 | 传输方法和装置 |
CN111431674A (zh) * | 2019-01-10 | 2020-07-17 | 夏普株式会社 | 由用户设备执行的方法以及用户设备 |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104125039B (zh) * | 2013-04-28 | 2017-11-14 | 电信科学技术研究院 | 一种确定传输链路的类型的方法、系统及设备 |
US10313065B2 (en) * | 2015-01-28 | 2019-06-04 | Lg Electronics Inc. | Method for transmitting a MAC PDU on SL-DCH in a D2D communication system and device therefor |
US9756641B2 (en) * | 2015-07-07 | 2017-09-05 | Qualcomm Incorporated | Dynamic signaling of LTE-TDD configurations in the presence of D2D transmissions |
EP3206321B1 (en) * | 2016-02-15 | 2020-07-08 | Panasonic Intellectual Property Corporation of America | Improved uplink harq operation for prose-enabled ues participating in sidelink discovery operation |
CN107645774B (zh) * | 2016-07-20 | 2020-07-28 | 普天信息技术有限公司 | V2x网络中调度pc5口资源的确认方法 |
US10595311B2 (en) * | 2016-07-29 | 2020-03-17 | Qualcomm Incorporated | Adapting transmissions in multi-transmission time interval (TTI) sidelink communication |
US10448295B2 (en) * | 2016-08-12 | 2019-10-15 | Lg Electronics Inc. | Method and apparatus for performing user equipment autonomous resource reselection based on counter in wireless communication system |
US10855401B2 (en) * | 2016-11-03 | 2020-12-01 | Lg Electronics Inc. | Method for determining retransmission numbers of sidelink data in wireless communication system and a device therefor |
CN108347313B (zh) * | 2017-01-24 | 2021-08-13 | 华为技术有限公司 | 反馈方法及用户设备 |
US20180279275A1 (en) * | 2017-03-23 | 2018-09-27 | Asustek Computer Inc. | Method and apparatus of facilitating reporting assistance information for sidelink service in a wireless communication system |
US10827380B2 (en) * | 2018-01-30 | 2020-11-03 | Huawei Technologies Co., Ltd. | System and method for supporting URLLC in advanced V2X communications |
KR20210104860A (ko) * | 2018-12-29 | 2021-08-25 | 베이징 시아오미 모바일 소프트웨어 컴퍼니 리미티드 | 다이렉트 통신의 데이터 전송 방법, 장치 및 시스템 |
KR20200099394A (ko) * | 2019-02-14 | 2020-08-24 | 주식회사 아이티엘 | 무선통신 시스템에서 harq 재전송을 지원하는 방법 및 장치 |
EP3735074B1 (en) * | 2019-04-30 | 2022-05-11 | ASUSTek Computer Inc. | Method and apparatus for handling retransmission indication for configured grant in sidelink in a wireless communication system |
-
2019
- 2019-08-16 CN CN201910760444.8A patent/CN112398591B/zh active Active
- 2019-08-16 CN CN202210613117.1A patent/CN115174006A/zh active Pending
-
2020
- 2020-08-17 US US17/630,204 patent/US20220295450A1/en active Pending
- 2020-08-17 EP EP20855396.6A patent/EP3993296A4/en active Pending
- 2020-08-17 WO PCT/CN2020/109626 patent/WO2021032064A1/zh unknown
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101119183A (zh) * | 2007-09-06 | 2008-02-06 | 上海华为技术有限公司 | 重传控制方法及传输设备 |
US20170215183A1 (en) * | 2016-01-22 | 2017-07-27 | Qualcomm Incorporated | Hybrid automatic repeat request feedback for unicast sidelink communications |
US20180287744A1 (en) * | 2017-03-30 | 2018-10-04 | Qualcomm Incorporated | Retransmission indication based on an acknowledgement based feedback scheme for wireless communication |
CN111148077A (zh) * | 2018-11-02 | 2020-05-12 | 华为技术有限公司 | 传输方法和装置 |
CN111431674A (zh) * | 2019-01-10 | 2020-07-17 | 夏普株式会社 | 由用户设备执行的方法以及用户设备 |
Non-Patent Citations (2)
Title |
---|
OPPO: "Mode 1 resource allocation for NR SL", 3GPP DRAFT; R1-1906473 UU#U00A0TO#U00A0CONTROL#U00A0SL, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, USA; 20190513 - 20190517, 3 May 2019 (2019-05-03), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France, XP051708508 * |
See also references of EP3993296A4 |
Also Published As
Publication number | Publication date |
---|---|
US20220295450A1 (en) | 2022-09-15 |
CN112398591B (zh) | 2022-06-10 |
EP3993296A4 (en) | 2022-08-24 |
EP3993296A1 (en) | 2022-05-04 |
CN112398591A (zh) | 2021-02-23 |
CN115174006A (zh) | 2022-10-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2021089020A1 (zh) | 一种侧行链路信道状态信息报告的发送方法、装置及系统 | |
WO2021031912A1 (zh) | 一种处理侧行链路资源的方法、装置及系统 | |
US20230231665A1 (en) | Method for feeding back hybrid automatic repeat request acknowledgement (harq-ack) and terminal device | |
US20220216946A1 (en) | Communication Method and Apparatus | |
WO2024103798A1 (zh) | 无线通信的方法及装置 | |
WO2021032064A1 (zh) | 一种确定侧行链路资源的方法、装置以及系统 | |
WO2021062774A1 (zh) | 一种侧行链路资源处理的方法、装置和系统 | |
JP7481440B2 (ja) | ハイブリッド自動再送要求処理方法及び通信装置 | |
WO2022061661A1 (zh) | 无线通信的方法、终端设备和网络设备 | |
US20220368505A1 (en) | Data feedback method and apparatus | |
WO2022001893A1 (zh) | 确定数据传输方式的方法及装置 | |
EP4211836B1 (en) | Burst transmission of data packets with feedback | |
US20230262838A1 (en) | Method and apparatus for processing sidelink process | |
WO2024164932A1 (zh) | 通信方法、装置及系统 | |
WO2023066102A1 (zh) | 一种无线通信的方法和装置 | |
WO2022077481A1 (zh) | 一种信道传输方法及其装置 | |
WO2023207365A1 (zh) | 定时提前量报告发送方法及装置 | |
WO2024169830A1 (zh) | 业务数据传输方法与装置、终端设备、网络设备和芯片 | |
CN117354950A (zh) | 一种通信方法及装置 | |
CN116368756A (zh) | 无线通信的方法和装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 20855396 Country of ref document: EP Kind code of ref document: A1 |
|
ENP | Entry into the national phase |
Ref document number: 2020855396 Country of ref document: EP Effective date: 20220127 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |