WO2023164851A1 - 侧行链路监听方法及装置 - Google Patents

侧行链路监听方法及装置 Download PDF

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Publication number
WO2023164851A1
WO2023164851A1 PCT/CN2022/078904 CN2022078904W WO2023164851A1 WO 2023164851 A1 WO2023164851 A1 WO 2023164851A1 CN 2022078904 W CN2022078904 W CN 2022078904W WO 2023164851 A1 WO2023164851 A1 WO 2023164851A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
sidelink
timer
signal
response
Prior art date
Application number
PCT/CN2022/078904
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English (en)
French (fr)
Inventor
杨星
Original Assignee
北京小米移动软件有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by 北京小米移动软件有限公司 filed Critical 北京小米移动软件有限公司
Priority to CN202280000522.4A priority Critical patent/CN114731719A/zh
Priority to PCT/CN2022/078904 priority patent/WO2023164851A1/zh
Publication of WO2023164851A1 publication Critical patent/WO2023164851A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/27—Transitions between radio resource control [RRC] states
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the present application relates to the technical field of communications, in particular to a sidelink monitoring method and device.
  • a sidelink (sidelink) communication manner is introduced.
  • DRX Discontinuous Reception
  • the receiving UE User Equipment, user equipment
  • PSCCH PhysicalSidelink
  • Control Channel physical sidelink control channel
  • a sidelink terminal device needs to receive a reply from the peer terminal device, but the peer terminal device may not reply immediately, and the DRX-configured terminal device may not be able to A reply was received, causing the communication to fail.
  • the embodiment of the first aspect of the present application proposes a sidelink monitoring method, the method is executed by the first terminal device, and the method includes:
  • the first terminal device In response to sending a first signal, the first terminal device enters an active state
  • the first terminal listens to sidelink transmissions.
  • the first signal includes: a coordination information request between terminal devices or a first discovery signal.
  • the entering the first terminal device into the activation state in response to sending the first signal includes:
  • the first terminal device In response to the running period of the first timer, the first terminal device remains activated.
  • the starting a first timer in response to sending the first signal includes:
  • a first timer is started.
  • the first signal is a coordination information request between terminal devices, and the method further includes:
  • the terminal device In response to receiving the inter-terminal device coordination information sent by the second terminal device, the terminal device exits the activation state.
  • the first signal is a first discovery signal
  • the method further includes:
  • the terminal device In response to receiving the second discovery signal sent by the second terminal device, the terminal device exits the activation state.
  • the first signal is a coordination information request between terminal devices, and the method further includes:
  • the first timer is stopped, and the first terminal device exits the activation state.
  • the first signal is a first discovery signal
  • the method further includes:
  • the first timer is stopped, and the first terminal device exits the activation state.
  • the method also includes:
  • the method also includes:
  • the first signal is a first discovery signal
  • the method further includes:
  • the method also includes:
  • the first terminal device In response to the duration of the first terminal device entering the activation state reaching a preset delay limit, the first terminal device exits the activation state.
  • the preset delay limit includes: a delay limit of coordination information between terminal devices, or a delay limit of a sidelink discovery process.
  • the terminal device monitors the transmission of the sidelink, including:
  • the terminal device monitors a physical sidelink control channel PSCCH, and/or the terminal device monitors sidelink control information SCI in a physical sidelink shared channel PSSCH.
  • the embodiment of the second aspect of the present application proposes a sidelink monitoring device, the device is applied to a first terminal device, and the device includes:
  • a processing unit configured to, in response to sending a first signal, enter the first terminal device into an activation state
  • a transceiver unit configured to, in the activated state, monitor the transmission of the sidelink by the first terminal device.
  • the first signal includes: a coordination information request between terminal devices or a first discovery signal.
  • processing unit is specifically configured to:
  • the first terminal device In response to the running period of the first timer, the first terminal device remains activated.
  • processing unit is specifically configured to:
  • a first timer is started.
  • the first signal is a coordination information request between terminal devices, and the processing unit is further configured to:
  • the terminal device In response to receiving the inter-terminal device coordination information sent by the second terminal device, the terminal device exits the activation state.
  • the first signal is a first discovery signal
  • the processing unit is further configured to:
  • the terminal device In response to receiving the second discovery signal sent by the second terminal device, the terminal device exits the activation state.
  • the first signal is a coordination information request between terminal devices, and the processing unit is further configured to:
  • the first timer is stopped, and the first terminal device exits the activation state.
  • the first signal is a first discovery signal
  • the processing unit is further configured to:
  • the first timer is stopped, and the first terminal device exits the activation state.
  • processing unit is also used for:
  • processing unit is also used for:
  • the first signal is a first discovery signal
  • the processing unit is further configured to:
  • processing unit is also used for:
  • the first terminal device In response to the duration of the first terminal device entering the activation state reaching a preset delay limit, the first terminal device exits the activation state.
  • the preset delay limit includes: a delay limit for coordination information between terminal devices, or a delay limit for a sidelink discovery process.
  • the transceiver unit is specifically configured to:
  • the terminal device monitors a physical sidelink control channel PSCCH, and/or the terminal device monitors sidelink control information SCI in a physical sidelink shared channel PSSCH.
  • the embodiment of the third aspect of the present application provides a communication device, the device includes a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the The device executes the sidelink monitoring method described in the embodiment of the first aspect above.
  • the embodiment of the fourth aspect of the present application provides a communication device, the device includes a processor and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to make the The device executes the sidelink monitoring method described in the embodiment of the first aspect above.
  • the embodiment of the fifth aspect of the present application provides a computer-readable storage medium for storing instructions, and when the instructions are executed, the sidelink monitoring method described in the embodiment of the first aspect above is implemented.
  • the embodiment of the sixth aspect of the present application provides a computer program, which, when running on a computer, causes the computer to execute the sidelink monitoring assignment method described in the embodiment of the first aspect.
  • the first terminal device enters the activation state in response to sending the first signal, and in the activation state, the first terminal device monitors the transmission of the sidelink , can control the monitoring of the terminal device on the sidelink, effectively avoiding the data transmission failure or delay caused by the inability of the terminal device to receive the reply based on the first signal after the terminal device sends the first signal, effectively
  • the communication efficiency of the sidelink transmission is improved, the communication quality of the sidelink transmission is improved, the power consumption of the terminal equipment is saved, and the battery life of the terminal equipment is improved.
  • Fig. 1a is a schematic structural diagram of a communication system provided by an embodiment of the present application.
  • FIG. 1b is a schematic structural diagram of another communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic flowchart of a sidelink monitoring method provided by an embodiment of the present application
  • FIG. 3 is a schematic flowchart of another sidelink monitoring method provided by an embodiment of the present application.
  • FIG. 4 is a schematic flowchart of another sidelink monitoring method provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another sidelink monitoring method provided by an embodiment of the present application.
  • FIG. 6 is a schematic flowchart of another sidelink monitoring method provided by an embodiment of the present application.
  • FIG. 7 is a schematic flowchart of another sidelink monitoring method provided by an embodiment of the present application.
  • FIG. 8 is a schematic flowchart of another sidelink monitoring method provided by an embodiment of the present application.
  • FIG. 9 is a schematic flowchart of another sidelink monitoring method provided by an embodiment of the present application.
  • FIG. 10 is a schematic structural diagram of a sidelink monitoring device provided by an embodiment of the present application.
  • FIG. 11 is a schematic structural diagram of another sidelink monitoring device provided by an embodiment of the present application.
  • FIG. 12 is a schematic structural diagram of a chip provided by an embodiment of the present application.
  • first, second, and third may be used in the embodiment of the present application to describe various information, such information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of the embodiments of the present application, first information may also be called second information, and similarly, second information may also be called first information.
  • first information may also be called second information
  • second information may also be called first information.
  • the words "if” and "if” as used herein may be interpreted as “at” or "when” or "in response to a determination.”
  • FIG. 1a is a schematic diagram of an architecture of a communication system provided by an embodiment of this application
  • FIG. 1b is a schematic diagram of an architecture of another communication system provided by an embodiment of this application.
  • the communication system may include, but is not limited to, two terminal devices.
  • the number and form of the devices shown in Figure 1a and Figure 1b are for example only and do not constitute a limitation to the embodiment of the application. In practical applications, more than two terminal devices may be included.
  • the communication system shown in FIG. 1 a and FIG. 1 b includes three terminal devices 101 , 102 and 103 as an example.
  • LTE Long Term Evolution
  • 5G new air interface system 5G new air interface system
  • other future new mobile communication systems 5G new air interface system
  • the terminal device 101, the terminal device 102 and the terminal device 103 in the embodiment of the present application are entities on the user side for receiving or transmitting signals, such as mobile phones.
  • the terminal equipment may also be called terminal equipment (terminal), user equipment (user equipment, UE), mobile station (Mobile Station, MS), mobile terminal equipment (Mobile Terminal, MT) and so on.
  • the terminal device can be a car with communication functions, a smart car, a mobile phone (Mobile Phone), a wearable device, a tablet computer (Pad), a computer with a wireless transceiver function, a virtual reality (Virtual Reality, VR) terminal device, an augmented reality ( Augmented Reality, AR) terminal equipment, wireless terminal equipment in Industrial Control, wireless terminal equipment in Self-Driving, wireless terminal equipment in Remote Medical Surgery, smart grid ( Wireless terminal devices in Smart Grid, wireless terminal devices in Transportation Safety, wireless terminal devices in Smart City, wireless terminal devices in Smart Home, etc.
  • the embodiment of the present application does not limit the specific technology and specific device form adopted by the terminal device.
  • a sidelink (sidelink) communication manner is introduced.
  • DRX Discontinuous Reception
  • the receiving UE User Equipment, user equipment
  • PSCCH PhysicalSidelink
  • Control Channel physical sidelink control channel
  • CSI Channel State Information, channel state information
  • MAC Medium Access Control
  • CE Control Element, control element, or control unit
  • the terminal device 101 when the terminal device 101 selects sidelink transmission resources, in order to avoid collisions, the terminal device 101 needs to sense resources and avoid selecting resources already reserved by other terminal devices. However, sometimes the perception of the terminal device 101 may not be realized, for example, some terminal devices do not have the perception capability, or the half-duplex terminal device cannot perceive all resources. In this scenario, other terminal devices (such as terminal device 102 and terminal device 103) can send the inter-device coordination information obtained after sensing to the terminal device 101, and the terminal device 101 selects transmission resources based on the inter-device coordination information .
  • the coordination information between terminal devices may include detected conflicting resources, resources that cannot be selected, or resources that can be selected.
  • the coordination information between terminal devices may be carried in SL (sidelink, sidelink) MACCE or SCI (sidelink control information, sidelink control information) and sent to the terminal device 101 through the sidelink.
  • the terminal device 101 may send an inter-terminal device coordination information request to the terminal device 102 and the terminal device 103, and the terminal device 102 and the terminal device 103 send the inter-terminal device coordination information to the terminal device 101 after receiving the request.
  • a terminal device may not be directly connected to a network device, but communicates with a network device through the relay of another terminal device.
  • a terminal device that is not directly connected to a network device is called a remote terminal device ( remote UE)
  • the terminal device that provides the relay function is called a relay terminal device (relay UE)
  • the remote terminal device and the relay terminal device also communicate through sidelink.
  • the relay terminal device and the remote terminal device can discover each other through a discovery (discovery) process, and after the discovery process is started, the terminal device can send or receive a discovery signal.
  • the discovery signal carries information such as the identity of the serving cell of the terminal equipment and the identity of the terminal equipment.
  • the discovery process has two modes, mode A and B. All discovery messages are carried via discovery signals.
  • the process of mode B is shown in FIG. 1b.
  • the terminal device 101 also called discoverer
  • sends a solicitation message which may carry discovery type, inquiry code, security protection information, etc.
  • terminal device 102 and terminal device 103 also referred to as discoveree
  • receive the solicitation message the terminal device 102 matching the solicitation message sends a reply message to complete the discovery process.
  • terminal device 102 and terminal device 103 may not immediately send inter-device coordination information, for example, terminal device 102 and terminal device 103 may need to perform resource selection or Resource awareness. If the terminal device 101 is configured with DRX, the terminal device 101 may have entered the sleep state at this time, unable to receive the inter-terminal device coordination information sent by the terminal device 102 and the terminal device 103, so that resource selection cannot be performed, resulting in delayed transmission. If the delay exceeds The maximum delay of the data to be sent, the data to be sent will be discarded.
  • the terminal device 102 and the terminal device 103 may not reply the discovery signal immediately, for example, the terminal device 102 and the terminal device 103 may need to perform resource selection or uplink transmission first. If the terminal device 101 is configured with DRX, the terminal device 101 may have entered a sleep state at this time and cannot receive the discovery signals sent by the terminal device 102 and the terminal device 103, so that the discovery process cannot be completed, resulting in communication delay or even failure.
  • FIG. 2 is a schematic flowchart of a sidelink monitoring method provided by an embodiment of the present application. It should be noted that, the sidelink monitoring method in the embodiment of the present application is executed by the first terminal device. As shown in Figure 2, the method may include the following steps:
  • Step 201 in response to sending a first signal, the first terminal device enters an activation state.
  • the terminal device After sending the first signal, the terminal device enters the activation state, and monitors the transmission of the sidelink sidelink in the activation state, which can effectively avoid being unable to receive a reply based on the first signal from the opposite terminal device.
  • the first signal is used for inter-terminal communication and is transmitted on a sidelink.
  • the first signal includes a coordination information request between terminal devices or a first discovery signal.
  • the first terminal device sends an inter-terminal device coordination information request, and the peer terminal device (second terminal device) sends the inter-terminal device coordination information to the first terminal device based on the request; the first terminal device sends the second terminal device A discovery signal, the peer terminal device (second terminal device) sends a second discovery signal to the first terminal device based on the first discovery signal, that is, the second discovery signal is based on the peer terminal device (second terminal device) A reply sent by the first discovery signal to the first terminal device.
  • the first terminal device can enter and maintain the active state by starting a timer.
  • the first terminal device starts the first timer after sending the first signal, and keeps an active state during the running of the first timer, and monitors the transmission of the sidelink.
  • the first terminal device starts the second timer after sending the first signal, starts the first timer after the second timer expires, and keeps the active state during the running of the first timer, Listen for sidelink transmissions.
  • the second timer is used to start the first timer.
  • the first terminal device may or may not be kept in an activated state, which can save power consumption of the first terminal device.
  • Step 202 in the activated state, the first terminal device monitors the transmission of the sidelink.
  • the first terminal device in the activated state can monitor the transmission of the sidelink, and can receive a reply based on the first signal sent by the opposite terminal device (second terminal device) during the period.
  • the first terminal device monitoring the transmission of the sidelink includes: the first terminal device monitoring a physical sidelink control channel PSCCH (PysicalSidelink Control Channel).
  • PSCCH Physical Sidelink Control Channel
  • the first terminal device monitoring the transmission of the sidelink includes: the first terminal device monitors the sidelink control information SCI in the physical sidelink shared channel PSSCH (PysicalSidelink SharedChannel). (sidelink control information).
  • the first terminal device monitoring the transmission of the sidelink includes: the first terminal device monitors the physical sidelink control channel PSCCH, and the sidelink control channel in the physical sidelink shared channel PSSCH Link Control Information SCI.
  • the first terminal device monitors the transmission of the sidelink in the activated state, and can exit the activated state when the preset condition is met, saving the power consumption of the terminal device and improving the battery life of the terminal device.
  • the first terminal device in response to the first terminal device receiving the reply sent by the second terminal device based on the first signal, the first terminal device exits the activation state.
  • the reply based on the first signal is coordination information between terminal devices; when the first signal is a first discovery signal, the reply based on the first signal is a second discovery Signal.
  • the first terminal device in response to a time period during which the first terminal device enters the activated state reaches a preset delay limit, the first terminal device exits the activated state.
  • the preset delay limit includes: a delay limit for coordination information between terminal devices, or a delay limit for a sidelink discovery process.
  • the first terminal device by responding to sending the first signal, the first terminal device enters the activation state, and in the activation state, the first terminal device monitors the transmission of the sidelink, which can control the terminal device to monitor the sidelink link, effectively avoiding
  • the data transmission failure or delay caused by the inability to receive the reply of the opposite terminal device based on the first signal effectively improves the communication efficiency of the sidelink transmission and improves the sidelink transmission efficiency.
  • the communication quality of road transmission can be improved, the power consumption of terminal equipment can be saved, and the battery life of terminal equipment can be improved.
  • FIG. 3 is a schematic flowchart of a sidelink monitoring method provided by an embodiment of the present application. It should be noted that, the sidelink monitoring method in the embodiment of the present application is executed by the first terminal device. As shown in Figure 3, the method may include the following steps:
  • Step 301 in response to sending a coordination information request between terminal devices, the first terminal device enters an activation state.
  • the first terminal device After sending the inter-terminal device coordination information request, the first terminal device enters the activation state and monitors the transmission of the sidelink sidelink in the activated state, which can effectively avoid the failure of receiving the response from the second terminal device based on the request between terminal devices. coordinate information.
  • the coordination information between terminal devices may include detected conflicting resources, unselectable resources or selectable resources.
  • the first terminal device can select a sending resource according to the inter-terminal device coordination information.
  • Step 302 in the active state, the first terminal device monitors the transmission of the sidelink.
  • the first terminal device in the activated state can monitor the transmission of the sidelink, and can receive the inter-terminal device coordination information sent by the second terminal device during the period.
  • the monitoring of the transmission of the sidelink by the first terminal device includes: monitoring the physical sidelink control channel PSCCH by the first terminal device.
  • the monitoring of the transmission of the sidelink by the first terminal device includes: the first terminal device monitors the sidelink control information SCI in the physical sidelink shared channel PSSCH.
  • the first terminal device monitoring the transmission of the sidelink includes: the first terminal device monitors the physical sidelink control channel PSCCH, and the sidelink control channel in the physical sidelink shared channel PSSCH Link Control Information SCI.
  • Step 303 in response to receiving the coordination information between terminal devices sent by the second terminal device, the first terminal device exits the activation state.
  • the first terminal device During the process of monitoring the transmission of the sidelink, if the first terminal device receives the coordination information between the terminal devices sent by the second terminal device, the first terminal device can select the transmission resource according to the coordination information between the terminal devices. End devices can exit the activation state.
  • the first terminal device by responding to the coordination information request sent by the terminal device, the first terminal device enters the activation state.
  • the first terminal device monitors the transmission of the sidelink, and responds to receiving the terminal Inter-device coordination information, the first terminal device exits the activation state, and can control the terminal device to monitor the sidelink link, effectively preventing the terminal device from receiving the first signal based on the first signal after the terminal device sends the first signal.
  • the data transmission failure or delay caused by this effectively improves the communication efficiency of the sidelink transmission, improves the communication quality of the sidelink transmission, saves the power consumption of the terminal equipment, and improves the battery life of the terminal equipment.
  • FIG. 4 is a schematic flowchart of a sidelink monitoring method provided in an embodiment of the present application. It should be noted that, the sidelink monitoring method in the embodiment of the present application is executed by the first terminal device. As shown in Figure 4, the method may include the following steps:
  • Step 401 in response to sending a first discovery signal, the first terminal device enters an activation state.
  • the first terminal device After sending the first discovery signal, the first terminal device enters the activation state, and monitors the sidelink transmission in the activation state, which can effectively avoid failing to receive the second discovery signal replied by the second terminal device based on the request.
  • the first discovery signal is used for mutual discovery between the first terminal device and the second terminal device, and the first discovery signal may carry information such as a serving cell identifier of the first terminal device, a terminal device identifier of the first terminal device, and the like.
  • the first discovery signal may also include a discovery type, an inquiry code, security protection information, and the like.
  • the first discovery signal corresponds to the discovery type, and the first discovery signal is configured to perform a discovery process corresponding to the discovery type, and the first discovery signal does not need to carry information about the discovery type.
  • Different discovery types may correspond to different first discovery signals.
  • the second discovery signal is used for mutual discovery between the first terminal device and the second terminal device, and the second discovery signal may carry information such as a serving cell identifier of the second terminal device and a terminal device identifier of the second terminal device.
  • the first terminal device may be a remote terminal device, or may be a relay terminal device.
  • Step 402 in the active state, the first terminal device monitors the transmission of the sidelink.
  • the first terminal device in the activated state can monitor the transmission of the sidelink, and can receive the second discovery signal sent by the second terminal device during the period.
  • the monitoring of the transmission of the sidelink by the first terminal device includes: monitoring the physical sidelink control channel PSCCH by the first terminal device.
  • the monitoring of the transmission of the sidelink by the first terminal device includes: the first terminal device monitors the sidelink control information SCI in the physical sidelink shared channel PSSCH.
  • the first terminal device monitoring the transmission of the sidelink includes: the first terminal device monitors the physical sidelink control channel PSCCH, and the sidelink control channel in the physical sidelink shared channel PSSCH Link Control Information SCI.
  • Step 403 in response to receiving the second discovery signal sent by the second terminal device, the first terminal device exits the activation state.
  • the first terminal device may exit the activation state.
  • the first terminal device by responding to sending the first discovery signal, the first terminal device enters the activation state.
  • the first terminal device monitors the transmission of the sidelink, and responds to receiving the second discovery signal sent by the second terminal device. signal, the first terminal device exits the activation state, and can control the terminal device to monitor the sidelink, which effectively prevents the terminal device from receiving the reply based on the first signal from the opposite terminal device after sending the first signal.
  • the resulting data transmission failure or delay effectively improves the communication efficiency of the sidelink transmission, improves the communication quality of the sidelink transmission, saves the power consumption of the terminal equipment, and improves the battery life of the terminal equipment.
  • FIG. 5 is a schematic flowchart of a sidelink monitoring method provided by an embodiment of the present application. It should be noted that, the sidelink monitoring method in the embodiment of the present application is executed by the first terminal device. As shown in Figure 5, the method may include the following steps:
  • Step 501 in response to sending a request for coordination information between terminal devices, start a first timer.
  • the first terminal device After the first terminal device sends the inter-terminal device coordination information request, it starts a first timer, and the first terminal device remains activated during the running of the first timer.
  • the coordination information between terminal devices may include detected conflicting resources, unselectable resources or selectable resources.
  • the first terminal device can select a transmission resource according to the inter-terminal device coordination information.
  • Step 502 in response to the running period of the first timer, the first terminal device remains in an active state.
  • the first terminal device After the first timer is started, the first terminal device remains active during the running of the first timer, and monitors the transmission of the sidelink sidelink, which can effectively avoid the coordination between terminal devices that cannot receive the reply of the second terminal device based on the request information.
  • the first terminal device can determine the length of the first timer, that is, the running time of the first timer. During the running of the first timer, the first terminal device remains activated.
  • the first terminal device can receive a sidelink radio resource control (sidelink RRC (Radio Resource Control, radio resource control)) message sent by the second terminal device, and the first terminal device can The link RRC message determines the length of the first timer.
  • sidelink RRC Radio Resource Control, radio resource control
  • the first terminal device can determine the length of the first timer according to the configuration information of the resource pool that sends the inter-terminal device coordination information request.
  • Step 503 in the activated state, the first terminal device monitors the transmission of the sidelink.
  • the first terminal device in the activated state can monitor the transmission of the sidelink, and can receive the inter-terminal device coordination information sent by the second terminal device during the period.
  • the monitoring of the transmission of the sidelink by the first terminal device includes: monitoring the physical sidelink control channel PSCCH by the first terminal device.
  • the monitoring of the transmission of the sidelink by the first terminal device includes: the first terminal device monitors the sidelink control information SCI in the physical sidelink shared channel PSSCH.
  • the first terminal device monitoring the transmission of the sidelink includes: the first terminal device monitors the physical sidelink control channel PSCCH, and the sidelink control channel in the physical sidelink shared channel PSSCH Link Control Information SCI.
  • Step 504 in response to receiving the inter-terminal device coordination information sent by the second terminal device, stop the first timer, and the first terminal device exits the activation state.
  • the first terminal device can select transmission resources according to the inter-terminal coordination information, and can stop In the first timer, the first terminal device exits the activation state.
  • the first timer is started in response to sending the coordination information request between the terminal devices, and the first terminal device remains in the activated state during the running of the first timer, and in the activated state, the first terminal device monitors the sidelink
  • the first timer is stopped, and the first terminal device exits the activation state, which can control the terminal device to monitor the sidelink, effectively avoiding the terminal
  • the data transmission fails or is delayed because it cannot receive the reply from the peer terminal device based on the first signal, which effectively improves the communication efficiency of the sidelink transmission and improves the sidelink transmission. Excellent communication quality, save power consumption of terminal equipment, and improve battery life of terminal equipment.
  • FIG. 6 is a schematic flowchart of a sidelink monitoring method provided by an embodiment of the present application. It should be noted that, the sidelink monitoring method in the embodiment of the present application is executed by the first terminal device. As shown in Figure 6, the method may include the following steps:
  • Step 601 Start a first timer in response to sending a first discovery signal.
  • the first terminal device After sending the first discovery signal, the first terminal device starts a first timer, and the first terminal device remains in an active state during the running of the first timer.
  • the first discovery signal is used for mutual discovery between the first terminal device and the second terminal device, and the first discovery signal may carry information such as a serving cell identifier of the first terminal device, a terminal device identifier of the first terminal device, and the like.
  • the first discovery signal may also include a discovery type, an inquiry code, security protection information, and the like.
  • the first discovery signal corresponds to the discovery type, and the first discovery signal is configured to perform a discovery process corresponding to the discovery type, and the first discovery signal does not need to carry information about the discovery type.
  • Different discovery types may correspond to different first discovery signals.
  • the second discovery signal is used for mutual discovery between the first terminal device and the second terminal device, and the second discovery signal may carry information such as a serving cell identifier of the second terminal device and a terminal device identifier of the second terminal device.
  • the first terminal device may be a remote terminal device, or may be a relay terminal device.
  • Step 602 in response to the running period of the first timer, the first terminal device remains in an active state.
  • the first terminal device After the first timer is started, the first terminal device remains active during the running of the first timer, and monitors the transmission of the sidelink sidelink, which can effectively avoid being unable to receive the second discovery signal replied by the second terminal device based on the request .
  • the first terminal device can determine the length of the first timer, that is, the running time of the first timer. During the running of the first timer, the first terminal device remains activated.
  • the first terminal device can receive the sidelink RRC message sent by the second terminal device, and the first terminal device determines the length of the first timer according to the received sidelink RRC message.
  • the first terminal device can determine the length of the first timer according to the configuration information of the resource pool that sends the first discovery signal.
  • the first terminal device can determine the length of the first timer according to the feature information corresponding to the first discovery signal.
  • the feature information corresponding to the first discovery signal includes a discovery type or an inquiry code.
  • the discovery type corresponding to the first discovery signal may determine the corresponding relationship through the discovery type carried in the first discovery signal, or it may be that the first discovery signal is configured to perform the discovery of the corresponding discovery type.
  • the configuration of the process to determine the correspondence may include direct discovery, relay discovery, and the like.
  • the inquiry code corresponding to the first discovery signal may be the inquiry code carried in the first discovery signal.
  • Step 603 in the activated state, the first terminal device monitors the transmission of the sidelink.
  • the first terminal device in the activated state can monitor the transmission of the sidelink, and can receive the second discovery signal sent by the second terminal device during the period.
  • the monitoring of the transmission of the sidelink by the first terminal device includes: monitoring the physical sidelink control channel PSCCH by the first terminal device.
  • the monitoring of the transmission of the sidelink by the first terminal device includes: the first terminal device monitors the sidelink control information SCI in the physical sidelink shared channel PSSCH.
  • the first terminal device monitoring the transmission of the sidelink includes: the first terminal device monitors the physical sidelink control channel PSCCH, and the sidelink control channel in the physical sidelink shared channel PSSCH Link Control Information SCI.
  • Step 604 in response to receiving the second discovery signal sent by the second terminal device, stop the first timer, and the first terminal device exits the activation state.
  • the first terminal device In the process of monitoring the transmission of the sidelink, if the first terminal device receives the second discovery signal sent by the second terminal device and completes the discovery process, it may stop the first timer, and the first terminal device exits the activation state.
  • the first terminal device monitors the sidelink link Transmission, in response to receiving the second discovery signal sent by the second terminal device, stop the first timer, the first terminal device exits the activation state, and can control the terminal device to monitor the sidelink, effectively preventing the terminal device from sending
  • the data transmission failure or delay caused by the inability to receive the response from the peer terminal device based on the first signal effectively improves the communication efficiency of the sidelink transmission and improves the communication quality of the sidelink transmission , save the power consumption of the terminal equipment, and improve the battery life of the terminal equipment.
  • FIG. 7 is a schematic flowchart of a sidelink monitoring method provided in an embodiment of the present application. It should be noted that, the sidelink monitoring method in the embodiment of the present application is executed by the first terminal device. As shown in Figure 7, the method may include the following steps:
  • Step 701 Start a second timer in response to sending a request for coordination information between terminal devices.
  • the first terminal device After the first terminal device sends the inter-terminal device coordination information request, it starts the second timer.
  • the second timer is used to start the first timer.
  • the first terminal device may not need to remain in an active state, which can further save power consumption of the terminal device and increase battery life of the terminal device.
  • the coordination information between terminal devices may include detected conflicting resources, unselectable resources or selectable resources.
  • the first terminal device can select a transmission resource according to the inter-terminal device coordination information.
  • Step 702 start the first timer in response to the timeout of the second timer.
  • the first terminal device starts the second timer after sending the inter-terminal device coordination information request, and starts the first timer after the second timer expires, and the first terminal device remains active during the running of the first timer.
  • Step 703 in response to the running period of the first timer, the first terminal device remains activated.
  • the first terminal device After the first timer is started, the first terminal device remains active during the running of the first timer, and monitors the transmission of the sidelink sidelink, which can effectively avoid the coordination between terminal devices that cannot receive the reply of the second terminal device based on the request information.
  • the first terminal device can determine the length of the first timer and the length of the second timer, that is, the running duration of the first timer and the running duration of the second timer. After the timeout, the first timer is started, and during the running of the first timer, the first terminal device remains in an active state.
  • the first terminal device can receive the sidelink RRC message sent by the second terminal device, and the first terminal device determines the length of the first timer and the second timing according to the received sidelink RRC message the length of the device.
  • the first terminal device can determine the length of the first timer and the length of the second timer according to the configuration information of the resource pool that sends the inter-terminal device coordination information request.
  • Step 704 in the active state, the first terminal device monitors the transmission of the sidelink.
  • the first terminal device in the activated state can monitor the transmission of the sidelink, and can receive the inter-terminal device coordination information sent by the second terminal device during the period.
  • the monitoring of the transmission of the sidelink by the first terminal device includes: monitoring the physical sidelink control channel PSCCH by the first terminal device.
  • the monitoring of the transmission of the sidelink by the first terminal device includes: the first terminal device monitors the sidelink control information SCI in the physical sidelink shared channel PSSCH.
  • the first terminal device monitoring the transmission of the sidelink includes: the first terminal device monitors the physical sidelink control channel PSCCH, and the sidelink control channel in the physical sidelink shared channel PSSCH Link Control Information SCI.
  • Step 705 in response to receiving the inter-terminal device coordination information sent by the second terminal device, stop the first timer, and the first terminal device exits the activation state.
  • the first terminal device can select transmission resources according to the inter-terminal coordination information, and can stop In the first timer, the first terminal device exits the activation state.
  • the second timer is started in response to the request for sending coordination information between terminal devices
  • the first timer is started in response to the second timer being timed out
  • the first terminal device remains active during the running of the first timer.
  • the first terminal device monitors the transmission of the sidelink, and in response to receiving the inter-terminal device coordination information sent by the second terminal device, stops the first timer, the first terminal device exits the active state, and can control
  • the monitoring of the side link by the terminal device effectively avoids data transmission failure or delay caused by the inability of the terminal device to receive the reply based on the first signal after the terminal device sends the first signal, and effectively improves the side link.
  • Improve the communication efficiency of the uplink transmission improve the communication quality of the sidelink transmission, save the power consumption of the terminal equipment, and improve the battery life of the terminal equipment.
  • FIG. 8 is a schematic flowchart of a sidelink monitoring method provided by an embodiment of the present application. It should be noted that, the sidelink monitoring method in the embodiment of the present application is executed by the first terminal device. As shown in Figure 8, the method may include the following steps:
  • Step 801 start a second timer in response to sending a first discovery signal.
  • the first terminal device After sending the first discovery signal, the first terminal device starts the second timer.
  • the second timer is used to start the first timer.
  • the first terminal device may not need to remain in an active state, which can further save power consumption of the terminal device and increase battery life of the terminal device.
  • the first discovery signal is used for mutual discovery between the first terminal device and the second terminal device, and the first discovery signal may carry information such as a serving cell identifier of the first terminal device, a terminal device identifier of the first terminal device, and the like.
  • the first discovery signal may also include a discovery type, an inquiry code, security protection information, and the like.
  • the first discovery signal corresponds to the discovery type, and the first discovery signal is configured to perform a discovery process corresponding to the discovery type, and the first discovery signal does not need to carry information about the discovery type.
  • Different discovery types may correspond to different first discovery signals.
  • the second discovery signal is used for mutual discovery between the first terminal device and the second terminal device, and the second discovery signal may carry information such as a serving cell identifier of the second terminal device and a terminal device identifier of the second terminal device.
  • the first terminal device may be a remote terminal device, or may be a relay terminal device.
  • Step 802 start the first timer in response to the timeout of the second timer.
  • the first terminal device After sending the first discovery signal, the first terminal device starts the second timer, and after the second timer expires, starts the first timer, and the first terminal device remains active during the running of the first timer.
  • Step 803 in response to the running period of the first timer, the first terminal device remains in an active state.
  • the first terminal device After the first timer is started, the first terminal device remains active during the running of the first timer, and monitors the transmission of the sidelink sidelink, which can effectively avoid being unable to receive the second discovery signal replied by the second terminal device based on the request .
  • the first terminal device can determine the length of the first timer and/or the length of the second timer, that is, the running time of the first timer and/or the running time of the second timer. After the second timer expires, the first timer is started, and during the running of the first timer, the first terminal device remains activated.
  • the first terminal device can receive the sidelink RRC message sent by the second terminal device, and the first terminal device determines the length of the first timer and/or the length of the second timer according to the received sidelink RRC message.
  • the length of the second timer That is, the first terminal device may determine the length of the first timer according to the sidelink RRC message, or the first terminal device may determine the length of the second timer according to the sidelink RRC message, or, the second A terminal device may determine the length of the first timer and the length of the second timer according to the sidelink RRC message.
  • the first terminal device can determine the length of the first timer and/or the length of the second timer according to the configuration information of the resource pool that sends the first discovery signal. That is, the first terminal device may determine the length of the first timer according to the configuration information of the resource pool that sends the first discovery signal; or, the first terminal device may determine the length of the first timer according to the configuration information of the resource pool that sends the first discovery signal , determine the length of the second timer; or, the first terminal device may determine the length of the first timer and the length of the second timer according to the configuration information of the resource pool that sends the first discovery signal.
  • the first terminal device can determine the length of the first timer and/or the length of the second timer according to the characteristic information corresponding to the first discovery signal. That is, the first terminal device may determine the length of the first timer according to the characteristic information corresponding to the first discovery signal; or, the first terminal device may determine the length of the second timer according to the characteristic information corresponding to the first discovery signal or, the first terminal device may determine the length of the first timer and the length of the second timer according to the feature information corresponding to the first discovery signal.
  • the feature information corresponding to the first discovery signal includes a discovery type or an inquiry code.
  • the discovery type corresponding to the first discovery signal may determine the corresponding relationship through the discovery type carried in the first discovery signal, or it may be that the first discovery signal is configured to perform the discovery of the corresponding discovery type.
  • the configuration of the process to determine the correspondence may include direct discovery, relay discovery, and the like.
  • the inquiry code corresponding to the first discovery signal may be the inquiry code carried in the first discovery signal.
  • Step 804 in the active state, the first terminal device monitors the transmission of the sidelink.
  • the first terminal device in the activated state can monitor the transmission of the sidelink, and can receive the second discovery signal sent by the second terminal device during the period.
  • the monitoring of the transmission of the sidelink by the first terminal device includes: monitoring the physical sidelink control channel PSCCH by the first terminal device.
  • the monitoring of the transmission of the sidelink by the first terminal device includes: the first terminal device monitors the sidelink control information SCI in the physical sidelink shared channel PSSCH.
  • the first terminal device monitoring the transmission of the sidelink includes: the first terminal device monitors the physical sidelink control channel PSCCH, and the sidelink control channel in the physical sidelink shared channel PSSCH Link Control Information SCI.
  • Step 805 in response to receiving the second discovery signal sent by the second terminal device, stop the first timer, and the first terminal device exits the activation state.
  • the first terminal device In the process of monitoring the transmission of the sidelink, if the first terminal device receives the second discovery signal sent by the second terminal device and completes the discovery process, it may stop the first timer, and the first terminal device exits the activation state.
  • the first terminal device monitors the transmission of the sidelink, and in response to receiving the second discovery signal sent by the second terminal device, stops the first timer, the first terminal device exits the activated state, and can control the terminal device to
  • the monitoring of the side link effectively avoids the data transmission failure or delay caused by the inability of the terminal device to receive the reply based on the first signal after the terminal device sends the first signal, and effectively improves the side link.
  • the communication efficiency of transmission improves the communication quality of sidelink transmission, saves the power consumption of terminal equipment, and improves the battery life of terminal equipment.
  • FIG. 9 is a schematic flowchart of a sidelink monitoring method provided by an embodiment of the present application. It should be noted that, the sidelink monitoring method in the embodiment of the present application is executed by the first terminal device. As shown in Figure 9, the method may include the following steps:
  • Step 901 in response to sending a first signal, the first terminal device enters an activation state.
  • Step 902 in the active state, the first terminal device monitors the transmission of the sidelink.
  • step 901 and step 902 may be implemented in any one of the embodiments of the present application respectively, which is not limited in the embodiment of the present application, and will not be repeated here.
  • the first terminal device enters the activation state, which may include starting the first timer and maintaining the activation state during the running of the first timer, or may include starting the second timer.
  • the first timer is started after the timer expires, and remains active while the first timer is running, and so on.
  • the first signal includes a coordination information request between terminal devices or a first discovery signal.
  • Step 903 In response to the time period for the first terminal device entering the activation state reaching a preset delay limit, the first terminal device exits the activation state.
  • the first terminal device exits the activation state if the duration of the first terminal device entering the activation state reaches a preset time delay limit.
  • the preset time delay limit may be predetermined by the protocol, or may be configured for the terminal device.
  • the preset delay limit includes: a delay limit for coordination information between terminal devices, or a delay limit for a sidelink discovery process.
  • the delay limitation of the coordination information between terminal devices refers to the requirement on the delay of sending the coordination information between terminal devices, that is, the second terminal device should send the coordination information between terminal devices within the required time delay.
  • the delay limit of the sidelink discovery process refers to the delay requirement of the sidelink discovery process, including the service delay requirement for triggering the discovery message.
  • the first terminal device by responding to sending the first signal, the first terminal device enters the activation state, in the activation state, the first terminal device monitors the transmission of the sidelink, and in response to the duration of the first terminal device entering the activation state reaching a preset Delay limit, the first terminal device exits the activation state, and can control the terminal device to monitor the sidelink, which effectively prevents the terminal device from receiving the reply based on the first signal after the terminal device sends the first signal , resulting in data transmission failure or delay, which effectively improves the communication efficiency of the sidelink transmission, improves the communication quality of the sidelink transmission, saves the power consumption of the terminal equipment, and improves the battery life of the terminal equipment.
  • the present application also provides a sidelink monitoring device, since the sidelink monitoring device provided in the embodiment of the present application is the same as that provided in the above several embodiments Therefore, the implementation of the sidelink monitoring method is also applicable to the sidelink monitoring device provided in the following embodiments, which will not be described in detail in the following embodiments.
  • FIG. 10 is a schematic structural diagram of a sidelink monitoring device provided by an embodiment of the present application.
  • the sidelink monitoring device 1000 includes: a processing unit 1010, a transceiver unit 1020, wherein:
  • a processing unit 1010 configured to, in response to sending a first signal, enter the first terminal device into an activation state
  • the transceiver unit 1020 is configured to, in the activated state, monitor the transmission of the sidelink by the first terminal device.
  • the first signal includes: a coordination information request between terminal devices or a first discovery signal.
  • processing unit 1010 is specifically configured to:
  • the first terminal device In response to the running period of the first timer, the first terminal device remains activated.
  • processing unit 1010 is specifically configured to:
  • a first timer is started.
  • the first signal is a coordination information request between terminal devices, and the processing unit 1010 is further configured to:
  • the terminal device In response to receiving the inter-terminal device coordination information sent by the second terminal device, the terminal device exits the activation state.
  • the first signal is a first discovery signal
  • the processing unit 1010 is further configured to:
  • the terminal device In response to receiving the second discovery signal sent by the second terminal device, the terminal device exits the activation state.
  • the first signal is a coordination information request between terminal devices, and the processing unit 1010 is further configured to:
  • the first timer is stopped, and the first terminal device exits the activation state.
  • the first signal is a first discovery signal
  • the processing unit 1010 is further configured to:
  • the first timer is stopped, and the first terminal device exits the activation state.
  • processing unit 1010 is further configured to:
  • processing unit 1010 is further configured to:
  • the first signal is a first discovery signal
  • the processing unit 1010 is further configured to:
  • processing unit 1010 is further configured to:
  • the first terminal device In response to the duration of the first terminal device entering the activation state reaching a preset delay limit, the first terminal device exits the activation state.
  • the preset delay limit includes: a delay limit for coordination information between terminal devices, or a delay limit for a sidelink discovery process.
  • the transceiver unit 1020 is specifically configured to:
  • the terminal device monitors a physical sidelink control channel PSCCH, and/or the terminal device monitors sidelink control information SCI in a physical sidelink shared channel PSSCH.
  • the first terminal device enters the activation state in response to sending the first signal, and in the activation state, the first terminal device monitors the transmission of the sidelink link, and can control the terminal device
  • the monitoring of the sidelink can effectively avoid the data transmission failure or delay caused by the inability of the terminal device to receive the reply based on the first signal after the terminal device sends the first signal, which effectively improves the sidelink link.
  • the communication efficiency of road transmission can be improved, the communication quality of side link transmission can be improved, the power consumption of terminal equipment can be saved, and the battery life of terminal equipment can be improved.
  • the embodiment of the present application also proposes a communication device, including: a processor and a memory, a computer program is stored in the memory, and the processor executes the computer program stored in the memory, so that the device executes the The method shown in the embodiment of Fig. 9 .
  • the embodiment of the present application also proposes a communication device, including: a processor and an interface circuit, the interface circuit is used to receive code instructions and transmit them to the processor, and the processor is used to run the code instructions to Execute the methods shown in the embodiments shown in FIG. 2 to FIG. 9 .
  • FIG. 11 is a schematic structural diagram of another sidelink monitoring device provided by an embodiment of the present application.
  • the sidelink monitoring apparatus 1100 may be a terminal device, or may be a chip, a chip system, or a processor that supports the terminal device to implement the above method.
  • the device can be used to implement the methods described in the above method embodiments, and for details, refer to the descriptions in the above method embodiments.
  • the sidelink listening device 1100 may include one or more processors 1101 .
  • the processor 1101 may be a general-purpose processor or a special-purpose processor. For example, it can be a baseband processor or a central processing unit.
  • the baseband processor can be used to process communication protocols and communication data
  • the central processor can be used to control sidelink monitoring devices (such as base stations, baseband chips, terminal equipment, terminal equipment chips, DU or CU, etc.) , execute computer programs, and process data for computer programs.
  • the sidelink monitoring device 1100 may further include one or more memories 1102, on which a computer program 1103 may be stored, and the processor 1101 executes the computer program 1103, so that the sidelink monitoring device 1100 executes the above-mentioned Methods described in the Methods Examples.
  • the computer program 1103 may be solidified in the processor 1101, and in this case, the processor 1101 may be implemented by hardware.
  • data may also be stored in the memory 1102 .
  • the sidelink monitoring device 1100 and the memory 1102 can be set separately or integrated together.
  • the sidelink monitoring device 1100 may further include a transceiver 1105 and an antenna 1106 .
  • the transceiver 1105 may be called a transceiver unit, a transceiver, or a transceiver circuit, etc., and is used to implement a transceiver function.
  • the transceiver 1105 may include a receiver and a transmitter, and the receiver may be called a receiver or a receiving circuit for realizing a receiving function; the transmitter may be called a transmitter or a sending circuit for realizing a sending function.
  • the sidelink monitoring device 1100 may further include one or more interface circuits 1107 .
  • the interface circuit 1107 is used to receive code instructions and transmit them to the processor 1101 .
  • the processor 1101 executes code instructions to enable the sidelink monitoring device 1100 to execute the methods described in the foregoing method embodiments.
  • the processor 1101 may include a transceiver for implementing receiving and sending functions.
  • the transceiver may be a transceiver circuit, or an interface, or an interface circuit.
  • the transceiver circuits, interfaces or interface circuits for realizing the functions of receiving and sending can be separated or integrated together.
  • the above-mentioned transceiver circuit, interface or interface circuit may be used for reading and writing code/data, or the above-mentioned transceiver circuit, interface or interface circuit may be used for signal transmission or transfer.
  • the sidelink monitoring apparatus 1100 may include a circuit, and the circuit may implement the function of sending or receiving or communicating in the foregoing method embodiments.
  • the processors and transceivers described in this application can be implemented in integrated circuits (integrated circuits, ICs), analog ICs, radio frequency integrated circuits (RFICs), mixed-signal ICs, application specific integrated circuits (ASICs), printed circuit boards ( printed circuit board, PCB), electronic equipment, etc.
  • the processor and transceiver can also be fabricated using various IC process technologies such as complementary metal oxide semiconductor (CMOS), nMetal-oxide-semiconductor (NMOS), P-type Metal oxide semiconductor (positive channel metal oxide semiconductor, PMOS), bipolar junction transistor (bipolar junction transistor, BJT), bipolar CMOS (BiCMOS), silicon germanium (SiGe), gallium arsenide (GaAs), etc.
  • CMOS complementary metal oxide semiconductor
  • NMOS nMetal-oxide-semiconductor
  • PMOS P-type Metal oxide semiconductor
  • BJT bipolar junction transistor
  • BiCMOS bipolar CMOS
  • SiGe silicon germanium
  • GaAs gallium arsenide
  • the sidelink monitoring device described in the above embodiments may be a network device or a terminal device, but the scope of the sidelink monitoring device described in this application is not limited thereto, and the structure of the sidelink monitoring device may vary Limited by Figures 9-10.
  • the sidelink listening device may be a stand-alone device or may be part of a larger device. Examples of sidelink listening devices could be:
  • a set of one or more ICs may also include storage components for storing data and computer programs;
  • ASIC such as modem (Modem);
  • the sidelink monitoring device may be a chip or a chip system
  • the chip shown in FIG. 12 includes a processor 1201 and an interface 1202 .
  • the number of processors 1201 may be one or more, and the number of interfaces 1202 may be more than one.
  • Interface 1202 used to transmit code instructions to the processor
  • the processor 1201 is configured to run code instructions to execute the methods shown in FIG. 2 to FIG. 9 .
  • the chip further includes a memory 1203 for storing necessary computer programs and data.
  • the embodiment of the present application also provides a communication system, the system includes the sidelink monitoring device as the terminal equipment in the aforementioned embodiment of Figure 10, or the system includes the sidelink monitoring device as the terminal equipment in the aforementioned Figure 11 embodiment listening device.
  • the present application also provides a readable storage medium on which instructions are stored, and when the instructions are executed by a computer, the functions of any one of the above method embodiments are realized.
  • the present application also provides a computer program product, which implements the functions of any one of the above method embodiments when executed by a computer.
  • a computer program product consists of one or more computer programs. When the computer program is loaded and executed on the computer, the processes or functions according to the embodiments of the present application will be generated in whole or in part.
  • a computer can be a general purpose computer, special purpose computer, computer network, or other programmable device.
  • the computer program can be stored in or transmitted from one computer-readable storage medium to another computer-readable storage medium, for example, the computer program can Coaxial cable, optical fiber, digital subscriber line (digital subscriber line, DSL)) or wireless (such as infrared, wireless, microwave, etc.) transmission to another website site, computer, server or data center.
  • 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, a data center, etc. integrated with one or more available media.
  • Available media can be magnetic media (e.g., floppy disk, hard disk, magnetic tape), optical media (e.g., high-density digital video disc (digital video disc, DVD)), or semiconductor media (e.g., solid state disk (SSD) )wait.
  • magnetic media e.g., floppy disk, hard disk, magnetic tape
  • optical media e.g., high-density digital video disc (digital video disc, DVD)
  • semiconductor media e.g., solid state disk (SSD)
  • At least one in this application can also be described as one or more, and multiple can be two, three, four or more, and this application does not make a limitation.
  • the technical feature is distinguished by "first”, “second”, “third”, “A”, “B”, “C” and “D”, etc.
  • the technical features described in the “first”, “second”, “third”, “A”, “B”, “C” and “D” have no sequence or order of magnitude among the technical features described.
  • the corresponding relationships shown in the tables in this application can be configured or predefined.
  • the values of the information in each table are just examples, and may be configured as other values, which are not limited in this application.
  • the corresponding relationship shown in some rows may not be configured.
  • appropriate deformation adjustments can be made based on the above table, for example, splitting, merging, and so on.
  • the names of the parameters shown in the titles of the above tables may also adopt other names understandable by the communication device, and the values or representations of the parameters may also be other values or representations understandable by the communication device.
  • other data structures can also be used, for example, arrays, queues, containers, stacks, linear tables, pointers, linked lists, trees, graphs, structures, classes, heaps, hash tables or hash tables can be used wait.
  • Predefined in this application can be understood as defining, predefining, storing, prestoring, prenegotiating, preconfiguring, curing, or prefiring.

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Abstract

本申请实施例公开了一种侧行链路监听方法及装置，通过响应于发送第一信号，第一终端设备进入激活状态，在激活状态中，该第一终端设备监听侧行链路的传输，能够控制终端设备对侧行链路的监听，有效避免了终端设备在发送第一信号之后，因为无法接收到对端终端设备基于第一信号的回复，而导致的数据传输失败或者延迟，有效提升了侧行链路传输的通信效率，提高侧行链路传输的通信质量，节约终端设备功耗，提升终端设备的续航能力。

Description

侧行链路监听方法及装置 技术领域
本申请涉及通信技术领域，特别是指一种侧行链路监听方法及装置。
背景技术
在通信***中，为了支持终端设备与终端设备之间的直接通信，引入了侧行链路(sidelink)的通信方式。为了节约侧行链路中终端设备的功耗，在R17中引入了侧行链路非连续接收(Discontinuous Reception，DRX)，接收UE(User Equipment，用户设备)只在激活时间内监听PSCCH(PysicalSidelink Control Channel，物理侧行链路控制信道)，发送UE只在激活时间内发送侧行链路数据。
在一些情况下，侧行链路终端设备在发送数据后，需要接收对端终端设备的回复，但是对端终端设备可能不会立即回复，而配置了DRX的终端设备可能因为进入睡眠状态而无法收到回复，从而导致通信失败。
发明内容
本申请第一方面实施例提出了一种侧行链路监听方法，所述方法由第一终端设备执行，所述方法包括：
响应于发送第一信号，所述第一终端设备进入激活状态；
在所述激活状态中，所述第一终端设备监听侧行链路的传输。
可选地，所述第一信号包括：终端设备间协调信息请求或者第一发现信号。
可选地，所述响应于发送第一信号，所述第一终端设备进入激活状态，包括：
响应于发送所述第一信号，启动第一定时器；
响应于所述第一定时器运行期间，所述第一终端设备保持激活状态。
可选地，所述响应于发送所述第一信号，启动第一定时器，包括：
响应于发送所述第一信号，启动第二定时器；
响应于所述第二定时器超时，启动第一定时器。
可选地，所述第一信号为终端设备间协调信息请求，所述方法还包括：
响应于接收到第二终端设备发送的终端设备间协调信息，所述终端设备退出激活状态。
可选地，所述第一信号为第一发现信号，所述方法还包括：
响应于接收到第二终端设备发送的第二发现信号，所述终端设备退出激活状态。
可选地，所述第一信号为终端设备间协调信息请求，所述方法还包括：
响应于接收到第二终端设备发送的终端设备间协调信息，停止所述第一定时器，所述第一终端设备退出激活状态。
可选地，所述第一信号为第一发现信号，所述方法还包括：
响应于接收到第二终端设备发送的第二发现信号，停止所述第一定时器，所述第一终端设备退出激活状态。
可选地，所述方法还包括：
接收第二终端设备发送的侧行链路无线资源控制消息；
根据所述侧行链路无线资源控制消息，确定所述第一定时器的长度和/或所述第二定时器的长度。
可选地，所述方法还包括：
根据发送所述第一信号的资源池的配置信息，确定所述第一定时器的长度和/或所述第二定时器的长度。
可选地，所述第一信号为第一发现信号，所述方法还包括：
根据所述第一发现信号对应的特征信息，确定所述第一定时器的长度和/或所述第二定时器的长度。
可选地，所述方法还包括：
响应于所述第一终端设备进入激活状态的时长达到预设时延限制，所述第一终端设备退出激活状态。
可选地，所述预设时延限制包括：终端设备间协调信息的时延限制，或者，侧行链路发现过程的时延限制。
可选地，所述终端设备监听侧行链路的传输，包括：
所述终端设备监听物理侧行链路控制信道PSCCH，和/或，所述终端设备设备监听在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
本申请第二方面实施例提出了一种侧行链路监听装置，所述装置应用于第一终端设备，所述装置包括：
处理单元，用于响应于发送第一信号，所述第一终端设备进入激活状态；
收发单元，用于在所述激活状态中，所述第一终端设备监听侧行链路的传输。
可选地，所述第一信号包括：终端设备间协调信息请求或者第一发现信号。
可选地，所述处理单元具体用于：
响应于发送所述第一信号，启动第一定时器；
响应于所述第一定时器运行期间，所述第一终端设备保持激活状态。
可选地，所述处理单元具体用于：
响应于发送所述第一信号，启动第二定时器；
响应于所述第二定时器超时，启动第一定时器。
可选地，所述第一信号为终端设备间协调信息请求，所述处理单元还用于：
响应于接收到第二终端设备发送的终端设备间协调信息，所述终端设备退出激活状态。
可选地，所述第一信号为第一发现信号，所述处理单元还用于：
响应于接收到第二终端设备发送的第二发现信号，所述终端设备退出激活状态。
可选地，所述第一信号为终端设备间协调信息请求，所述处理单元还用于：
响应于接收到第二终端设备发送的终端设备间协调信息，停止所述第一定时器，所述第一终端设备退出激活状态。
可选地，所述第一信号为第一发现信号，所述处理单元还用于：
响应于接收到第二终端设备发送的第二发现信号，停止所述第一定时器，所述第一终端设备退出激活状态。
可选地，所述处理单元还用于：
接收第二终端设备发送的侧行链路无线资源控制消息；
根据所述侧行链路无线资源控制消息，确定所述第一定时器的长度和/或所述第二定时器的长度。
可选地，所述处理单元还用于：
根据发送所述第一信号的资源池的配置信息，确定所述第一定时器的长度和/或所述第二定时器的长度。
可选地，所述第一信号为第一发现信号，所述处理单元还用于：
根据所述第一发现信号对应的特征信息，确定所述第一定时器的长度和/或所述第二定时器的长度。
可选地，所述处理单元还用于：
响应于所述第一终端设备进入激活状态的时长达到预设时延限制，所述第一终端设备退出激活状态。
可选地，所述预设时延限制包括：终端设备间协调信息的时延限制，或者，侧行链路发现过程的时延限制。
可选地，所述收发单元具体用于：
所述终端设备监听物理侧行链路控制信道PSCCH，和/或，所述终端设备设备监听在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
本申请第三方面实施例提出了一种通信装置，所述装置包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行上述第一方面实施例所述的侧行链路监听方法。
本申请第四方面实施例提出了一种通信装置，该装置包括处理器和接口电路，该接口电路用于接收代码指令并传输至该处理器，该处理器用于运行所述代码指令以使该装置执行上述第一方面实施例所述的侧行链路监听方法。
本申请第五方面实施例提出了一种计算机可读存储介质，用于存储有指令，当所述指令被执行时，使上述第一方面实施例所述的侧行链路监听方法被实现。
本申请第六方面实施例提出了一种计算机程序，当其在计算机上运行时，使得计算机执行第一方面实施例所述的侧行链路监听分配方法。
本申请实施例提供的一种侧行链路监听方法及装置，通过响应于发送第一信号，第一终端设备进入激活状态，在激活状态中，该第一终端设备监听侧行链路的传输，能够控制终端设备对侧行链路的监听，有效避免了终端设备在发送第一信号之后，因为无法接收到对端终端设备基于第一信号的回复，而导致的数据传输失败或者延迟，有效提升了侧行链路传输的通信效率，提高侧行链路传输的通信质量，节约终端设备功耗，提升终端设备的续航能力。
本申请附加的方面和优点将在下面的描述中部分给出，部分将从下面的描述中变得明显，或通过本申请的实践了解到。
附图说明
为了更清楚地说明本申请实施例或背景技术中的技术方案，下面将对本申请实施例或背景技术中所需要使用的附图进行说明。
图1a为本申请实施例提供的一种通信***的架构示意图；
图1b为本申请实施例提供的另一种通信***的架构示意图；
图2是本申请实施例提供的一种侧行链路监听方法的流程示意图；
图3是本申请实施例提供的另一种侧行链路监听方法的流程示意图；
图4是本申请实施例提供的另一种侧行链路监听方法的流程示意图；
图5是本申请实施例提供的另一种侧行链路监听方法的流程示意图；
图6是本申请实施例提供的另一种侧行链路监听方法的流程示意图；
图7是本申请实施例提供的另一种侧行链路监听方法的流程示意图；
图8是本申请实施例提供的另一种侧行链路监听方法的流程示意图；
图9是本申请实施例提供的另一种侧行链路监听方法的流程示意图；
图10是本申请实施例提供的一种侧行链路监听装置的结构示意图；
图11是本申请实施例提供的另一种侧行链路监听装置的结构示意图；
图12是本申请实施例提供的一种芯片的结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本申请实施例相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本申请实施例的一些方面相一致的装置和方法的例子。
在本申请实施例使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本申请实施例。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本申请实施例可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本申请实施例范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”及“若”可以被解释成为“在……时”或“当……时”或“响应于确定”。
下面详细描述本申请的实施例，所述实施例的示例在附图中示出，其中自始至终相同或类似的标号表示相同或类似的要素。下面通过参考附图描述的实施例是示例性的，旨在用于解释本申请，而不能理解为对本申请的限制。
为了更好的理解本申请实施例公开的一种时钟同步方法，下面首先对本申请实施例适用的通信***进行描述。
请参见图1a和图1b，图1a为本申请实施例提供的一种通信***的架构示意图，图1b为本申请实施例提供的另一种通信***的架构示意图。该通信***可包括但不限于两个终端设备，图1a和图1b所示的设备数量和形态仅用于举例并不构成对本申请实施例的限定，实际应用中可以包括两个以上的终端设备。图1a和图1b所示的通信***以包括三个终端设备101，102和103为例。
需要说明的是，本申请实施例的技术方案可以应用于各种通信***。例如：长期演进(Long Term Evolution，LTE)***、第五代移动通信***、5G新空口***，或者其他未来的新型移动通信***等。
本申请实施例中的终端设备101，终端设备102和终端设备103是用户侧的一种用于接收或发射信号的实体，如手机。终端设备也可以称为终端设备(terminal)、用户设备(user equipment，UE)、移动台(Mobile Station，MS)、移动终端设备(Mobile Terminal，MT)等。终端设备可以是具备通信功 能的汽车、智能汽车、手机(Mobile Phone)、穿戴式设备、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality，AR)终端设备、工业控制(Industrial Control)中的无线终端设备、无人驾驶(Self-Driving)中的无线终端设备、远程手术(Remote Medical Surgery)中的无线终端设备、智能电网(Smart Grid)中的无线终端设备、运输安全(Transportation Safety)中的无线终端设备、智慧城市(Smart City)中的无线终端设备、智慧家庭(Smart Home)中的无线终端设备等等。本申请的实施例对终端设备所采用的具体技术和具体设备形态不做限定。
在通信***中，为了支持终端设备与终端设备之间的直接通信，引入了侧行链路(sidelink)的通信方式。为了节约侧行链路中终端设备的功耗，在R17中引入了侧行链路非连续接收(Discontinuous Reception，DRX)，接收UE(User Equipment，用户设备)只在激活时间内监听PSCCH(PysicalSidelink Control Channel，物理侧行链路控制信道)，为了避免数据丢失，发送UE只在激活时间内发送侧行链路数据。当终端设备发送sidelink CSI MAC CE((CSI，Channel State Information，信道状态信息)(MAC，Medium Access Control，媒体接入控制层)(CE，Control Element，控制元素，或称控制单元))之后也会进入激活状态，接收对端终端设备发送的CSI测量报告。
如图1a所示，图1a在终端设备101选择sidelink的发送资源时，为了避免碰撞，终端设备101需要对资源进行感知，避免选择其他终端设备已经预留的资源。但是有时终端设备101的感知可能无法实现，比如有些终端设备不具备感知能力，或者由于半双工终端设备不能感知到所有资源。在这种场景下，其他终端设备(比如终端设备102和终端设备103)可以将感知后所获取的终端设备间协调信息发送给终端设备101，终端设备101基于该终端设备间协调信息选择发送资源。终端设备间协调信息可以包括检测到冲突的资源，不能选择的资源或者可以选择的资源。终端设备间协调信息可以携带于SL(sidelink，侧行链路)MACCE或者SCI(sidelink control information，侧行链路控制信息)通过sidelink发送给终端设备101。终端设备101可以向终端设备102和终端设备103发送终端设备间协调信息请求，终端设备102和终端设备103收到请求之后向终端设备101发送终端设备间协调信息。
在通信***中，终端设备也可以不直接与网络设备相连，而是通过另一终端设备的中继来实现与网络设备的通信，不直接与网络设备相连的终端设备称为远端终端设备(remote UE)，提供中继功能的终端设备称为中继终端设备(relay UE)，远端终端设备与中继终端设备之间也通过sidelink通信。
中继终端设备和远端终端设备可以通过发现(discovery)过程进行彼此的发现，在发现过程启动后，终端设备可以发送或者接收发现信号。发现信号中携带终端设备的服务小区标识，终端设备标识等信息。
发现过程有两种模式，模式A和B。所有发现消息都通过发现信号携带。
模式B的流程如图1b所示，终端设备101(也被称作discoverer)发送征集消息，征集消息中可以携带发现类型，询问代码，安全防护信息等。其他终端设备(终端设备102和终端设备103(也被称作discoveree))收到征集消息后，与征集消息匹配的终端设备102发送回复消息，完成发现过程。
在一些情况下，终端设备101发送终端设备间协调信息请求之后，终端设备102和终端设备103可能不会立即发送终端设备间协调信息，比如终端设备102和终端设备103可能需要先进行资源选择或者资源感知。如果终端设备101配置了DRX，此时终端设备101可能已经进入睡眠状态，无法接收终端设备102和终端设备103发送的终端设备间协调信息，从而无法进行资源选择，导致延迟发送，如果延迟超过了待发数据的最大时延，待发数据会被丢弃。
终端设备101发送发现信号(模式B)之后，终端设备102和终端设备103可能不会立即回复发现信号，比如终端设备102和终端设备103可能需要先进行资源选择或者进行上行发送。如果终端设备101配置了DRX，此时终端设备101可能已经进入睡眠状态，无法接收终端设备102和终端设备103发送的发现信号，从而无法完成发现过程，导致通信延迟，甚至失败。
可以理解的是，本申请实施例描述的通信***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***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。
下面结合附图对本申请所提供的侧行链路监听方法及其装置进行详细地介绍。
请参见图2，图2是本申请实施例提供的一种侧行链路监听方法的流程示意图。需要说明的是，本申请实施例的侧行链路监听方法由第一终端设备执行。如图2所示，该方法可以包括如下步骤：
步骤201，响应于发送第一信号，第一终端设备进入激活状态。
终端设备在发送第一信号之后，进入激活状态，并在激活状态中监听侧行链路sidelink的传输，能够有效避免无法接收到对端终端设备基于第一信号的回复。
其中，在本申请实施例中，第一信号是用于终端间通信的，在侧行链路sidelink上进行传输的信号。
可选地，第一信号包括终端设备间协调信息请求或者第一发现信号。
如前所述，第一终端设备发送终端设备间协调信息请求，对端终端设备(第二终端设备)基于该请求，向该第一终端设备发送终端设备间协调信息；第一终端设备发送第一发现信号，对端终端设备(第二终端设备)基于该第一发现信号，向该第一终端设备发送第二发现信号，即第二发现信号是对端终端设备(第二终端设备)基于第一发现信号向第一终端设备发送的回复。
可以理解的是，在本申请实施例的通信***中可以存在至少一个第二终端设备，能够基于第一终端设备发送的第一信号，向第一终端设备发送回复。
在一些实施方式中，第一终端设备可以通过启动定时器来进入并保持激活状态。
在一些实施方式中，第一终端设备在发送第一信号之后，启动第一定时器，并在第一定时器运行期间，保持激活状态，监听侧行链路的传输。
在一些实施方式中，第一终端设备在发送第一信号之后，启动第二定时器，在第二定时器超时之后，启动第一定时器，并在第一定时器运行期间，保持激活状态，监听侧行链路的传输。第二定时器用于启动第一定时器，第二定时器运行期间，第一终端设备可以保持激活状态，也可以不用保持激活状态，能够节约第一终端设备的功率消耗。
步骤202，在激活状态中，第一终端设备监听侧行链路的传输。
处于激活状态中的第一终端设备，能够监听侧行链路的传输，能够接收到期间对端终端设备(第二终端设备)发送的基于第一信号的回复。
作为第一种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH(PysicalSidelink Control Channel)。
作为第二种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备设备监听在物理侧行链路共享信道PSSCH(PysicalSidelink SharedChannel)中的侧行链路控制信息SCI(sidelink control information)。
作为第三种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH，以及在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
在本申请实施例中，第一终端设备在激活状态中监听侧行链路的传输，同时能够在满足预设条件的情况下退出激活状态，节约终端设备功耗，提升终端设备的续航能力。
在一些实施方式中，响应于第一终端设备接收到第二终端设备发送的基于第一信号的回复，第一终端设备退出激活状态。
可以理解的是，第一信号为终端设备间协调信息请求时，基于第一信号的回复为终端设备间协调信息；第一信号为第一发现信号时，基于第一信号的回复为第二发现信号。
在一些实施方式中，响应于第一终端设备进入激活状态的时长达到预设时延限制，第一终端设备退出激活状态。
可选地，预设时延限制包括：终端设备间协调信息的时延限制，或者，侧行链路发现过程的时延限制。
综上，通过响应于发送第一信号，第一终端设备进入激活状态，在激活状态中，第一终端设备监听侧行链路的传输，能够控制终端设备对侧行链路的监听，有效避免了终端设备在发送第一信号之后，因为无法接收到对端终端设备基于第一信号的回复，而导致的数据传输失败或者延迟，有效提升了侧行链路传输的通信效率，提高侧行链路传输的通信质量，节约终端设备功耗，提升终端设备的续航能力。
请参见图3，图3是本申请实施例提供的一种侧行链路监听方法的流程示意图。需要说明的是，本申请实施例的侧行链路监听方法由第一终端设备执行。如图3所示，该方法可以包括如下步骤：
步骤301，响应于发送终端设备间协调信息请求，第一终端设备进入激活状态。
第一终端设备在发送终端设备间协调信息请求之后，进入激活状态，并在激活状态中监听侧行链路sidelink的传输，能够有效避免无法接收到第二终端设备基于该请求回复的终端设备间协调信息。
可以理解的是，在本申请实施例的通信***中可以存在至少一个第二终端设备，能够基于第一终端设备发送的终端设备间协调信息请求，向第一终端设备发送终端设备间协调信息。
其中，终端设备间协调信息可以包括检测到冲突的资源，不能选择的资源或者可以选择的资源。第一终端设备能够根据该终端设备间协调信息选择发送资源。
步骤302，在激活状态中，第一终端设备监听侧行链路的传输。
处于激活状态中的第一终端设备，能够监听侧行链路的传输，能够接收到期间第二终端设备发送的终端设备间协调信息。
作为第一种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH。
作为第二种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备设备监听在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
作为第三种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH，以及在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
步骤303，响应于接收到第二终端设备发送的终端设备间协调信息，第一终端设备退出激活状态。
第一终端设备在监听侧行链路的传输的过程中，如果接收到了第二终端设备发送的终端设备间协调 信息，第一终端设备能够根据该终端设备间协调信息进行发送资源选择，第一终端设备可以退出激活状态。
综上，通过响应于发送终端设备间协调信息请求，第一终端设备进入激活状态，在激活状态中，第一终端设备监听侧行链路的传输，响应于接收到第二终端设备发送的终端设备间协调信息，第一终端设备退出激活状态，能够控制终端设备对侧行链路的监听，有效避免了终端设备在发送第一信号之后，因为无法接收到对端终端设备基于第一信号的回复，而导致的数据传输失败或者延迟，有效提升了侧行链路传输的通信效率，提高侧行链路传输的通信质量，节约终端设备功耗，提升终端设备的续航能力。
请参见图4，图4是本申请实施例提供的一种侧行链路监听方法的流程示意图。需要说明的是，本申请实施例的侧行链路监听方法由第一终端设备执行。如图4所示，该方法可以包括如下步骤：
步骤401，响应于发送第一发现信号，第一终端设备进入激活状态。
第一终端设备在发送第一发现信号之后，进入激活状态，并在激活状态中监听侧行链路sidelink的传输，能够有效避免无法接收到第二终端设备基于该请求回复的第二发现信号。
可以理解的是，在本申请实施例的通信***中可以存在至少一个第二终端设备，能够基于第一终端设备发送的第一发现信号，向第一终端设备发送第二发现信号。
其中，第一发现信号用于第一终端设备和第二终端设备之间彼此的发现，第一发现信号中可以携带第一终端设备的服务小区标识，第一终端设备的终端设备标识等信息。第一发现信号中还可以包括发现类型，询问代码，安全防护信息等。
在一些实施方式中，第一发现信号与发现类型存在对应关系，该第一发现信号被配置为执行对应发现类型的发现过程，该第一发现信号中无需携带发现类型的信息。不同的发现类型可以对应不同的第一发现信号。
第二发现信号用于第一终端设备和第二终端设备之间彼此的发现，第二发现信号中可以携带第二终端设备的服务小区标识，第二终端设备的终端设备标识等信息。
需要说明的是，在本申请实施例中，第一终端设备可以是远端终端设备，也可以是中继终端设备。
步骤402，在激活状态中，第一终端设备监听侧行链路的传输。
处于激活状态中的第一终端设备，能够监听侧行链路的传输，能够接收到期间第二终端设备发送的第二发现信号。
作为第一种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH。
作为第二种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备设备监听在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
作为第三种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH，以及在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
步骤403，响应于接收到第二终端设备发送的第二发现信号，第一终端设备退出激活状态。
第一终端设备在监听侧行链路的传输的过程中，如果接收到了第二终端设备发送的第二发现信号，完成了发现过程，第一终端设备可以退出激活状态。
综上，通过响应于发送第一发现信号，第一终端设备进入激活状态，在激活状态中，第一终端设备 监听侧行链路的传输，响应于接收到第二终端设备发送的第二发现信号，第一终端设备退出激活状态，能够控制终端设备对侧行链路的监听，有效避免了终端设备在发送第一信号之后，因为无法接收到对端终端设备基于第一信号的回复，而导致的数据传输失败或者延迟，有效提升了侧行链路传输的通信效率，提高侧行链路传输的通信质量，节约终端设备功耗，提升终端设备的续航能力。
请参见图5，图5是本申请实施例提供的一种侧行链路监听方法的流程示意图。需要说明的是，本申请实施例的侧行链路监听方法由第一终端设备执行。如图5所示，该方法可以包括如下步骤：
步骤501，响应于发送终端设备间协调信息请求，启动第一定时器。
第一终端设备在发送终端设备间协调信息请求之后，启动第一定时器，第一终端设备在第一定时器运行期间保持激活状态。
同样可以理解的是，在本申请实施例的通信***中可以存在至少一个第二终端设备，能够基于第一终端设备发送的终端设备间协调信息请求，向第一终端设备发送终端设备间协调信息。其中，终端设备间协调信息可以包括检测到冲突的资源，不能选择的资源或者可以选择的资源。第一终端设备能够根据该终端设备间协调信息选择发送资源。
步骤502，响应于第一定时器运行期间，第一终端设备保持激活状态。
第一定时器启动后，第一终端设备在第一定时器运行期间保持激活状态，监听侧行链路sidelink的传输，能够有效避免无法接收到第二终端设备基于该请求回复的终端设备间协调信息。
在本申请实施例中，第一终端设备能够确定第一定时器的长度，也就是第一定时器的运行时长，在第一定时器的运行期间，第一终端设备保持激活状态。
在一些实施方式中，第一终端设备能够接收第二终端设备发送的侧行链路无线资源控制(sidelink RRC(Radio Resource Control，无线资源控制))消息，第一终端设备根据接收到的侧行链路RRC消息确定第一定时器的长度。
在一些实施方式中，第一终端设备能够根据发送该终端设备间协调信息请求的资源池的配置信息，确定第一定时器的长度。
步骤503，在激活状态中，第一终端设备监听侧行链路的传输。
处于激活状态中的第一终端设备，能够监听侧行链路的传输，能够接收到期间第二终端设备发送的终端设备间协调信息。
作为第一种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH。
作为第二种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备设备监听在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
作为第三种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH，以及在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
步骤504，响应于接收到第二终端设备发送的终端设备间协调信息，停止第一定时器，第一终端设备退出激活状态。
第一终端设备在监听侧行链路的传输的过程中，如果接收到了第二终端设备发送的终端设备间协调信息，第一终端设备能够根据该终端设备间协调信息进行发送资源选择，可以停止第一定时器，第一终 端设备退出激活状态。
综上，通过响应于发送终端设备间协调信息请求，启动第一定时器，响应于第一定时器运行期间，第一终端设备保持激活状态，在激活状态中，第一终端设备监听侧行链路的传输，响应于接收到第二终端设备发送的终端设备间协调信息，停止第一定时器，第一终端设备退出激活状态，能够控制终端设备对侧行链路的监听，有效避免了终端设备在发送第一信号之后，因为无法接收到对端终端设备基于第一信号的回复，而导致的数据传输失败或者延迟，有效提升了侧行链路传输的通信效率，提高侧行链路传输的通信质量，节约终端设备功耗，提升终端设备的续航能力。
请参见图6，图6是本申请实施例提供的一种侧行链路监听方法的流程示意图。需要说明的是，本申请实施例的侧行链路监听方法由第一终端设备执行。如图6所示，该方法可以包括如下步骤：
步骤601，响应于发送第一发现信号，启动第一定时器。
第一终端设备在发送第一发现信号之后，启动第一定时器，第一终端设备在第一定时器运行期间保持激活状态。
可以理解的是，在本申请实施例的通信***中可以存在至少一个第二终端设备，能够基于第一终端设备发送的第一发现信号，向第一终端设备发送第二发现信号。
其中，第一发现信号用于第一终端设备和第二终端设备之间彼此的发现，第一发现信号中可以携带第一终端设备的服务小区标识，第一终端设备的终端设备标识等信息。第一发现信号中还可以包括发现类型，询问代码，安全防护信息等。
在一些实施方式中，第一发现信号与发现类型存在对应关系，该第一发现信号被配置为执行对应发现类型的发现过程，该第一发现信号中无需携带发现类型的信息。不同的发现类型可以对应不同的第一发现信号。
第二发现信号用于第一终端设备和第二终端设备之间彼此的发现，第二发现信号中可以携带第二终端设备的服务小区标识，第二终端设备的终端设备标识等信息。
需要说明的是，在本申请实施例中，第一终端设备可以是远端终端设备，也可以是中继终端设备。
步骤602，响应于第一定时器运行期间，第一终端设备保持激活状态。
第一定时器启动后，第一终端设备在第一定时器运行期间保持激活状态，监听侧行链路sidelink的传输，能够有效避免无法接收到第二终端设备基于该请求回复的第二发现信号。
在本申请实施例中，第一终端设备能够确定第一定时器的长度，也就是第一定时器的运行时长，在第一定时器的运行期间，第一终端设备保持激活状态。
在一些实施方式中，第一终端设备能够接收第二终端设备发送的侧行链路RRC消息，第一终端设备根据接收到的侧行链路RRC消息确定第一定时器的长度。
在一些实施方式中，第一终端设备能够根据发送该第一发现信号的资源池的配置信息，确定第一定时器的长度。
在一些实施方式中，第一终端设备能够根据该第一发现信号对应的特征信息，确定第一定时器的长度。
可选地，第一发现信号对应的特征信息包括发现类型或询问代码。
需要说明的是，第一发现信号对应的发现类型，可以是通过第一发现信号中携带的发现类型来确定 该对应关系，也可以是通过该第一发现信号被配置为执行对应发现类型的发现过程的配置来确定该对应关系。其中，发现类型可以包括直接发现和中继发现等。
在本申请实施例中，第一发现信号对应的询问代码，可以是第一发现信号中携带的询问代码。
步骤603，在激活状态中，第一终端设备监听侧行链路的传输。
处于激活状态中的第一终端设备，能够监听侧行链路的传输，能够接收到期间第二终端设备发送的第二发现信号。
作为第一种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH。
作为第二种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备设备监听在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
作为第三种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH，以及在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
步骤604，响应于接收到第二终端设备发送的第二发现信号，停止第一定时器，第一终端设备退出激活状态。
第一终端设备在监听侧行链路的传输的过程中，如果接收到了第二终端设备发送的第二发现信号，完成了发现过程，可以停止第一定时器，第一终端设备退出激活状态。
综上，通过响应于发送第一发现信号，启动第一定时器，响应于第一定时器运行期间，第一终端设备保持激活状态，在激活状态中，第一终端设备监听侧行链路的传输，响应于接收到第二终端设备发送的第二发现信号，停止第一定时器，第一终端设备退出激活状态，能够控制终端设备对侧行链路的监听，有效避免了终端设备在发送第一信号之后，因为无法接收到对端终端设备基于第一信号的回复，而导致的数据传输失败或者延迟，有效提升了侧行链路传输的通信效率，提高侧行链路传输的通信质量，节约终端设备功耗，提升终端设备的续航能力。
请参见图7，图7是本申请实施例提供的一种侧行链路监听方法的流程示意图。需要说明的是，本申请实施例的侧行链路监听方法由第一终端设备执行。如图7所示，该方法可以包括如下步骤：
步骤701，响应于发送终端设备间协调信息请求，启动第二定时器。
第一终端设备在发送终端设备间协调信息请求之后，启动第二定时器。在本申请实施例中，第二定时器用于启动第一定时器。
在本申请实施例中，可选地，在第二定时器运行期间，第一终端设备可以无需保持激活状态，能够进一步节约终端设备的功率消耗，增加终端设备的续航能力。
同样可以理解的是，在本申请实施例的通信***中可以存在至少一个第二终端设备，能够基于第一终端设备发送的终端设备间协调信息请求，向第一终端设备发送终端设备间协调信息。其中，终端设备间协调信息可以包括检测到冲突的资源，不能选择的资源或者可以选择的资源。第一终端设备能够根据该终端设备间协调信息选择发送资源。
步骤702，响应于第二定时器超时，启动第一定时器。
第一终端设备在发送终端设备间协调信息请求之后，启动第二定时器，并在第二定时器超时之后，启动第一定时器，第一终端设备在第一定时器运行期间保持激活状态。
步骤703，响应于第一定时器运行期间，第一终端设备保持激活状态。
第一定时器启动后，第一终端设备在第一定时器运行期间保持激活状态，监听侧行链路sidelink的传输，能够有效避免无法接收到第二终端设备基于该请求回复的终端设备间协调信息。
在本申请实施例中，第一终端设备能够确定第一定时器的长度和第二定时器的长度，也就是第一定时器的运行时长和第二定时器的运行时长，在第二定时器超时后，启动第一定时器，在第一定时器的运行期间，第一终端设备保持激活状态。
在一些实施方式中，第一终端设备能够接收第二终端设备发送的侧行链路RRC消息，第一终端设备根据接收到的侧行链路RRC消息确定第一定时器的长度和第二定时器的长度。
在一些实施方式中，第一终端设备能够根据发送该终端设备间协调信息请求的资源池的配置信息，确定第一定时器的长度和第二定时器的长度。
步骤704，在激活状态中，第一终端设备监听侧行链路的传输。
处于激活状态中的第一终端设备，能够监听侧行链路的传输，能够接收到期间第二终端设备发送的终端设备间协调信息。
作为第一种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH。
作为第二种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备设备监听在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
作为第三种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH，以及在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
步骤705，响应于接收到第二终端设备发送的终端设备间协调信息，停止第一定时器，第一终端设备退出激活状态。
第一终端设备在监听侧行链路的传输的过程中，如果接收到了第二终端设备发送的终端设备间协调信息，第一终端设备能够根据该终端设备间协调信息进行发送资源选择，可以停止第一定时器，第一终端设备退出激活状态。
综上，通过响应于发送终端设备间协调信息请求，启动第二定时器，响应于第二定时器超时，启动第一定时器，响应于第一定时器运行期间，第一终端设备保持激活状态，在激活状态中，第一终端设备监听侧行链路的传输，响应于接收到第二终端设备发送的终端设备间协调信息，停止第一定时器，第一终端设备退出激活状态，能够控制终端设备对侧行链路的监听，有效避免了终端设备在发送第一信号之后，因为无法接收到对端终端设备基于第一信号的回复，而导致的数据传输失败或者延迟，有效提升了侧行链路传输的通信效率，提高侧行链路传输的通信质量，节约终端设备功耗，提升终端设备的续航能力。
请参见图8，图8是本申请实施例提供的一种侧行链路监听方法的流程示意图。需要说明的是，本申请实施例的侧行链路监听方法由第一终端设备执行。如图8所示，该方法可以包括如下步骤：
步骤801，响应于发送第一发现信号，启动第二定时器。
第一终端设备在发送第一发现信号之后，启动第二定时器。在本申请实施例中，第二定时器用于启动第一定时器。
在本申请实施例中，可选地，在第二定时器运行期间，第一终端设备可以无需保持激活状态，能够进一步节约终端设备的功率消耗，增加终端设备的续航能力。
可以理解的是，在本申请实施例的通信***中可以存在至少一个第二终端设备，能够基于第一终端设备发送的第一发现信号，向第一终端设备发送第二发现信号。
其中，第一发现信号用于第一终端设备和第二终端设备之间彼此的发现，第一发现信号中可以携带第一终端设备的服务小区标识，第一终端设备的终端设备标识等信息。第一发现信号中还可以包括发现类型，询问代码，安全防护信息等。
在一些实施方式中，第一发现信号与发现类型存在对应关系，该第一发现信号被配置为执行对应发现类型的发现过程，该第一发现信号中无需携带发现类型的信息。不同的发现类型可以对应不同的第一发现信号。
第二发现信号用于第一终端设备和第二终端设备之间彼此的发现，第二发现信号中可以携带第二终端设备的服务小区标识，第二终端设备的终端设备标识等信息。
需要说明的是，在本申请实施例中，第一终端设备可以是远端终端设备，也可以是中继终端设备。
步骤802，响应于第二定时器超时，启动第一定时器。
第一终端设备在发送第一发现信号之后，启动第二定时器，并在第二定时器超时之后，启动第一定时器，第一终端设备在第一定时器运行期间保持激活状态。
步骤803，响应于第一定时器运行期间，第一终端设备保持激活状态。
第一定时器启动后，第一终端设备在第一定时器运行期间保持激活状态，监听侧行链路sidelink的传输，能够有效避免无法接收到第二终端设备基于该请求回复的第二发现信号。
在本申请实施例中，第一终端设备能够确定第一定时器的长度和/或第二定时器的长度，也就是第一定时器的运行时长和/或第二定时器的运行时长，在第二定时器超时后，启动第一定时器，在第一定时器的运行期间，第一终端设备保持激活状态。
在一些实施方式中，第一终端设备能够接收第二终端设备发送的侧行链路RRC消息，第一终端设备根据接收到的侧行链路RRC消息确定第一定时器的长度和/或第二定时器的长度。也就是，第一终端设备可以根据该侧行链路RRC消息确定第一定时器的长度，或者，第一终端设备可以根据该侧行链路RRC消息确定第二定时器的长度，或者，第一终端设备可以根据该侧行链路RRC消息确定第一定时器的长度和第二定时器的长度。
在一些实施方式中，第一终端设备能够根据发送该第一发现信号的资源池的配置信息，确定第一定时器的长度和/或第二定时器的长度。也就是，第一终端设备可以根据发送该第一发现信号的资源池的配置信息，确定第一定时器的长度；或者，第一终端设备可以根据发送该第一发现信号的资源池的配置信息，确定第二定时器的长度；或者，第一终端设备可以根据发送该第一发现信号的资源池的配置信息，确定第一定时器的长度和第二定时器的长度。
在一些实施方式中，第一终端设备能够根据该第一发现信号对应的特征信息，确定第一定时器的长度和/或第二定时器的长度。也就是，第一终端设备可以根据该第一发现信号对应的特征信息，确定第一定时器的长度；或者，第一终端设备可以根据该第一发现信号对应的特征信息，确定第二定时器的长度；或者，第一终端设备可以根据该第一发现信号对应的特征信息，确定第一定时器的长度和第二定时器的长度。
可选地，第一发现信号对应的特征信息包括发现类型或询问代码。
需要说明的是，第一发现信号对应的发现类型，可以是通过第一发现信号中携带的发现类型来确定该对应关系，也可以是通过该第一发现信号被配置为执行对应发现类型的发现过程的配置来确定该对应关系。其中，发现类型可以包括直接发现和中继发现等。
在本申请实施例中，第一发现信号对应的询问代码，可以是第一发现信号中携带的询问代码。
步骤804，在激活状态中，第一终端设备监听侧行链路的传输。
处于激活状态中的第一终端设备，能够监听侧行链路的传输，能够接收到期间第二终端设备发送的第二发现信号。
作为第一种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH。
作为第二种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备设备监听在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
作为第三种可能的实现方式，第一终端设备监听侧行链路的传输包括：第一终端设备监听物理侧行链路控制信道PSCCH，以及在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
步骤805，响应于接收到第二终端设备发送的第二发现信号，停止第一定时器，第一终端设备退出激活状态。
第一终端设备在监听侧行链路的传输的过程中，如果接收到了第二终端设备发送的第二发现信号，完成了发现过程，可以停止第一定时器，第一终端设备退出激活状态。
综上，通过响应于发送第一发现信号，启动第二定时器，响应于第二定时器超时，启动第一定时器，响应于第一定时器运行期间，第一终端设备保持激活状态，在激活状态中，第一终端设备监听侧行链路的传输，响应于接收到第二终端设备发送的第二发现信号，停止第一定时器，第一终端设备退出激活状态，能够控制终端设备对侧行链路的监听，有效避免了终端设备在发送第一信号之后，因为无法接收到对端终端设备基于第一信号的回复，而导致的数据传输失败或者延迟，有效提升了侧行链路传输的通信效率，提高侧行链路传输的通信质量，节约终端设备功耗，提升终端设备的续航能力。
请参见图9，图9是本申请实施例提供的一种侧行链路监听方法的流程示意图。需要说明的是，本申请实施例的侧行链路监听方法由第一终端设备执行。如图9所示，该方法可以包括如下步骤：
步骤901，响应于发送第一信号，第一终端设备进入激活状态。
步骤902，在激活状态中，第一终端设备监听侧行链路的传输。
在本申请实施例中，步骤901和步骤902可以分别采用本申请的各实施例中的任一种方式实现，本申请实施例并不对此作出限定，也不再赘述。
可以理解，在本申请实施例中，第一终端设备进入激活状态，可以包括启动第一定时器，并在第一定时器运行期间保持激活状态，也可以包括启动第二定时器，在第二定时器超时后启动第一定时器，并在第一定时器运行期间保持激活状态等等。在本申请实施例中，第一信号包括终端设备间协调信息请求或者第一发现信号。
步骤903，响应于第一终端设备进入激活状态的时长达到预设时延限制，第一终端设备退出激活状态。
在本申请实施例中，第一终端设备进入激活状态的时长如果达到预设时延限制，第一终端设备退出激活状态。
其中，可选地，该预设时延限制可以是协议预先规定的，也可以是配置给终端设备的。
在一些实施方式中，预设时延限制包括：终端设备间协调信息的时延限制，或者，侧行链路发现过程的时延限制。
其中，终端设备间协调信息的时延限制，是指对终端设备间协调信息发送的时延的要求，也就是第二终端设备应该在要求的时延内发送该终端设备间协调信息。侧行链路发现过程的时延限制，是指sidelink发现过程的时延的要求，包括触发发现消息的业务时延要求。
综上，通过响应于发送第一信号，第一终端设备进入激活状态，在激活状态中，第一终端设备监听侧行链路的传输，响应于第一终端设备进入激活状态的时长达到预设时延限制，第一终端设备退出激活状态，能够控制终端设备对侧行链路的监听，有效避免了终端设备在发送第一信号之后，因为无法接收到对端终端设备基于第一信号的回复，而导致的数据传输失败或者延迟，有效提升了侧行链路传输的通信效率，提高侧行链路传输的通信质量，节约终端设备功耗，提升终端设备的续航能力。
与上述几种实施例提供的侧行链路监听方法相对应，本申请还提供一种侧行链路监听装置，由于本申请实施例提供的侧行链路监听装置与上述几种实施例提供的方法相对应，因此在侧行链路监听方法的实施方式也适用于下述实施例提供的侧行链路监听装置，在下述实施例中不再详细描述。
请参见图10，图10为本申请实施例提供的一种侧行链路监听装置的结构示意图。
如图10所示，该侧行链路监听装置1000包括：处理单元1010，收发单元1020，其中：
处理单元1010，用于响应于发送第一信号，所述第一终端设备进入激活状态；
收发单元1020，用于在所述激活状态中，所述第一终端设备监听侧行链路的传输。
可选地，所述第一信号包括：终端设备间协调信息请求或者第一发现信号。
可选地，所述处理单元1010具体用于：
响应于发送所述第一信号，启动第一定时器；
响应于所述第一定时器运行期间，所述第一终端设备保持激活状态。
可选地，所述处理单元1010具体用于：
响应于发送所述第一信号，启动第二定时器；
响应于所述第二定时器超时，启动第一定时器。
可选地，所述第一信号为终端设备间协调信息请求，所述处理单元1010还用于：
响应于接收到第二终端设备发送的终端设备间协调信息，所述终端设备退出激活状态。
可选地，所述第一信号为第一发现信号，所述处理单元1010还用于：
响应于接收到第二终端设备发送的第二发现信号，所述终端设备退出激活状态。
可选地，所述第一信号为终端设备间协调信息请求，所述处理单元1010还用于：
响应于接收到第二终端设备发送的终端设备间协调信息，停止所述第一定时器，所述第一终端设备退出激活状态。
可选地，所述第一信号为第一发现信号，所述处理单元1010还用于：
响应于接收到第二终端设备发送的第二发现信号，停止所述第一定时器，所述第一终端设备退出激 活状态。
可选地，所述处理单元1010还用于：
接收第二终端设备发送的侧行链路无线资源控制消息；
根据所述侧行链路无线资源控制消息，确定所述第一定时器的长度和/或所述第二定时器的长度。
可选地，所述处理单元1010还用于：
根据发送所述第一信号的资源池的配置信息，确定所述第一定时器的长度和/或所述第二定时器的长度。
可选地，所述第一信号为第一发现信号，所述处理单元1010还用于：
根据所述第一发现信号对应的特征信息，确定所述第一定时器的长度和/或所述第二定时器的长度。
可选地，所述处理单元1010还用于：
响应于所述第一终端设备进入激活状态的时长达到预设时延限制，所述第一终端设备退出激活状态。
可选地，所述预设时延限制包括：终端设备间协调信息的时延限制，或者，侧行链路发现过程的时延限制。
可选地，所述收发单元1020具体用于：
所述终端设备监听物理侧行链路控制信道PSCCH，和/或，所述终端设备设备监听在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
本实施例的侧行链路监听装置，可以通过响应于发送第一信号，第一终端设备进入激活状态，在激活状态中，该第一终端设备监听侧行链路的传输，能够控制终端设备对侧行链路的监听，有效避免了终端设备在发送第一信号之后，因为无法接收到对端终端设备基于第一信号的回复，而导致的数据传输失败或者延迟，有效提升了侧行链路传输的通信效率，提高侧行链路传输的通信质量，节约终端设备功耗，提升终端设备的续航能力。
为了实现上述实施例，本申请实施例还提出一种通信装置，包括：处理器和存储器，存储器中存储有计算机程序，处理器执行所述存储器中存储的计算机程序，以使装置执行图2至图9实施例所示的方法。
为了实现上述实施例，本申请实施例还提出一种通信装置，包括：处理器和接口电路，接口电路，用于接收代码指令并传输至处理器，处理器，用于运行所述代码指令以执行图2至图9实施例所示的方法。
请参见图11，图11是本申请实施例提供的另一种侧行链路监听装置的结构示意图。侧行链路监听装置1100可以是终端设备，也可以是支持终端设备实现上述方法的芯片、芯片***、或处理器等。该装置可用于实现上述方法实施例中描述的方法，具体可以参见上述方法实施例中的说明。
侧行链路监听装置1100可以包括一个或多个处理器1101。处理器1101可以是通用处理器或者专用处理器等。例如可以是基带处理器或中央处理器。基带处理器可以用于对通信协议以及通信数据进行处理，中央处理器可以用于对侧行链路监听装置(如，基站、基带芯片，终端设备、终端设备芯片，DU或CU等)进行控制，执行计算机程序，处理计算机程序的数据。
可选的，侧行链路监听装置1100中还可以包括一个或多个存储器1102，其上可以存有计算机程序 1103，处理器1101执行计算机程序1103，以使得侧行链路监听装置1100执行上述方法实施例中描述的方法。计算机程序1103可能固化在处理器1101中，该种情况下，处理器1101可能由硬件实现。
可选的，存储器1102中还可以存储有数据。侧行链路监听装置1100和存储器1102可以单独设置，也可以集成在一起。
可选的，侧行链路监听装置1100还可以包括收发器1105、天线1106。收发器1105可以称为收发单元、收发机、或收发电路等，用于实现收发功能。收发器1105可以包括接收器和发送器，接收器可以称为接收机或接收电路等，用于实现接收功能；发送器可以称为发送机或发送电路等，用于实现发送功能。
可选的，侧行链路监听装置1100中还可以包括一个或多个接口电路1107。接口电路1107用于接收代码指令并传输至处理器1101。处理器1101运行代码指令以使侧行链路监听装置1100执行上述方法实施例中描述的方法。
在一种实现方式中，处理器1101中可以包括用于实现接收和发送功能的收发器。例如该收发器可以是收发电路，或者是接口，或者是接口电路。用于实现接收和发送功能的收发电路、接口或接口电路可以是分开的，也可以集成在一起。上述收发电路、接口或接口电路可以用于代码/数据的读写，或者，上述收发电路、接口或接口电路可以用于信号的传输或传递。
在一种实现方式中，侧行链路监听装置1100可以包括电路，电路可以实现前述方法实施例中发送或接收或者通信的功能。本申请中描述的处理器和收发器可实现在集成电路(integrated circuit，IC)、模拟IC、射频集成电路RFIC、混合信号IC、专用集成电路(application specific integrated circuit，ASIC)、印刷电路板(printed circuit board，PCB)、电子设备等上。该处理器和收发器也可以用各种IC工艺技术来制造，例如互补金属氧化物半导体(complementary metal oxide semiconductor，CMOS)、N型金属氧化物半导体(nMetal-oxide-semiconductor，NMOS)、P型金属氧化物半导体(positive channel metal oxide semiconductor，PMOS)、双极结型晶体管(bipolar junction transistor，BJT)、双极CMOS(BiCMOS)、硅锗(SiGe)、砷化镓(GaAs)等。
以上实施例描述中的侧行链路监听装置可以是网络设备或者终端设备，但本申请中描述的侧行链路监听装置的范围并不限于此，而且侧行链路监听装置的结构可以不受图9-图10的限制。侧行链路监听装置可以是独立的设备或者可以是较大设备的一部分。例如侧行链路监听装置可以是：
(1)独立的集成电路IC，或芯片，或，芯片***或子***；
(2)具有一个或多个IC的集合，可选的，该IC集合也可以包括用于存储数据，计算机程序的存储部件；
(3)ASIC，例如调制解调器(Modem)；
(4)可嵌入在其他设备内的模块；
(5)接收机、终端设备、智能终端设备、蜂窝电话、无线设备、手持机、移动单元、车载设备、网络设备、云设备、人工智能设备等等；
(6)其他等等。
对于侧行链路监听装置可以是芯片或芯片***的情况，可参见图12所示的芯片的结构示意图。图12所示的芯片包括处理器1201和接口1202。其中，处理器1201的数量可以是一个或多个，接口1202的数量可以是多个。
对于芯片用于实现本申请实施例中终端设备的功能的情况：
接口1202，用于代码指令并传输至处理器；
处理器1201，用于运行代码指令以执行如图2至图9的方法。
可选的，芯片还包括存储器1203，存储器1203用于存储必要的计算机程序和数据。
本领域技术人员还可以了解到本申请实施例列出的各种说明性逻辑块(illustrative logical block)和步骤(step)可以通过电子硬件、电脑软件，或两者的结合进行实现。这样的功能是通过硬件还是软件来实现取决于特定的应用和整个***的设计要求。本领域技术人员可以对于每种特定的应用，可以使用各种方法实现的功能，但这种实现不应被理解为超出本申请实施例保护的范围。
本申请实施例还提供一种通信***，该***包括前述图10实施例中作为终端设备的侧行链路监听装置，或者，该***包括前述图11实施例中作为终端设备的侧行链路监听装置。
本申请还提供一种可读存储介质，其上存储有指令，该指令被计算机执行时实现上述任一方法实施例的功能。
本申请还提供一种计算机程序产品，该计算机程序产品被计算机执行时实现上述任一方法实施例的功能。
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。计算机程序产品包括一个或多个计算机程序。在计算机上加载和执行计算机程序时，全部或部分地产生按照本申请实施例的流程或功能。计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。计算机程序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，计算机程序可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)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。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包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。可用介质可以是磁性介质(例如，软盘、硬盘、磁带)、光介质(例如，高密度数字视频光盘(digital video disc，DVD))、或者半导体介质(例如，固态硬盘(solid state disk，SSD))等。
本领域普通技术人员可以理解：本申请中涉及的第一、第二等各种数字编号仅为描述方便进行的区分，并不用来限制本申请实施例的范围，也不表示先后顺序。
本申请中的至少一个还可以描述为一个或多个，多个可以是两个、三个、四个或者更多个，本申请不做限制。在本申请实施例中，对于一种技术特征，通过“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”等区分该种技术特征中的技术特征，该“第一”、“第二”、“第三”、“A”、“B”、“C”和“D”描述的技术特征间无先后顺序或者大小顺序。
本申请中各表所示的对应关系可以被配置，也可以是预定义的。各表中的信息的取值仅仅是举例，可以配置为其他值，本申请并不限定。在配置信息与各参数的对应关系时，并不一定要求必须配置各表中示意出的所有对应关系。例如，本申请中的表格中，某些行示出的对应关系也可以不配置。又例如，可以基于上述表格做适当的变形调整，例如，拆分，合并等等。上述各表中标题示出参数的名称也可以采用通信装置可理解的其他名称，其参数的取值或表示方式也可以通信装置可理解的其他取值或表示方式。上述各表在实现时，也可以采用其他的数据结构，例如可以采用数组、队列、容器、栈、线性表、 指针、链表、树、图、结构体、类、堆、散列表或哈希表等。
本申请中的预定义可以理解为定义、预先定义、存储、预存储、预协商、预配置、固化、或预烧制。
本领域普通技术人员可以意识到，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，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，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。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的***、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
应当理解，可以使用上面所示的各种形式的流程，重新排序、增加或删除步骤。例如，本申请实施例中记载的各步骤可以并行地执行也可以顺序地执行也可以不同的次序执行，只要能够实现本发明公开的技术方案所期望的结果，本文在此不进行限制。
上述具体实施方式，并不构成对本发明保护范围的限制。本领域技术人员应该明白的是，根据设计要求和其他因素，可以进行各种修改、组合、子组合和替代。任何在本发明的精神和原则之内所作的修改、等同替换和改进等，均应包含在本发明保护范围之内。

Claims (18)

  1. 一种侧行链路监听方法，其特征在于，所述方法由第一终端设备执行，所述方法包括：
    响应于发送第一信号，所述第一终端设备进入激活状态；
    在所述激活状态中，所述第一终端设备监听侧行链路的传输。
  2. 根据权利要求1所述的方法，其特征在于，所述第一信号包括：终端设备间协调信息请求或者第一发现信号。
  3. 根据权利要求2所述的方法，其特征在于，所述响应于发送第一信号，所述第一终端设备进入激活状态，包括：
    响应于发送所述第一信号，启动第一定时器；
    响应于所述第一定时器运行期间，所述第一终端设备保持激活状态。
  4. 根据权利要求3所述的方法，其特征在于，所述响应于发送所述第一信号，启动第一定时器，包括：
    响应于发送所述第一信号，启动第二定时器；
    响应于所述第二定时器超时，启动第一定时器。
  5. 根据权利要求2所述的方法，其特征在于，所述第一信号为终端设备间协调信息请求，所述方法还包括：
    响应于接收到第二终端设备发送的终端设备间协调信息，所述终端设备退出激活状态。
  6. 根据权利要求2所述的方法，其特征在于，所述第一信号为第一发现信号，所述方法还包括：
    响应于接收到第二终端设备发送的第二发现信号，所述终端设备退出激活状态。
  7. 根据权利要求3或4所述的方法，其特征在于，所述第一信号为终端设备间协调信息请求，所述方法还包括：
    响应于接收到第二终端设备发送的终端设备间协调信息，停止所述第一定时器，所述第一终端设备退出激活状态。
  8. 根据权利要求3或4所述的方法，其特征在于，所述第一信号为第一发现信号，所述方法还包括：
    响应于接收到第二终端设备发送的第二发现信号，停止所述第一定时器，所述第一终端设备退出激活状态。
  9. 根据权利要求3-4,7-8任一项所述的方法，其特征在于，所述方法还包括：
    接收第二终端设备发送的侧行链路无线资源控制消息；
    根据所述侧行链路无线资源控制消息，确定所述第一定时器的长度和/或所述第二定时器的长度。
  10. 根据权利要求3-4,7任一项所述的方法，其特征在于，所述方法还包括：
    根据发送所述第一信号的资源池的配置信息，确定所述第一定时器的长度和/或所述第二定时器的长度。
  11. 根据权利要求3-4,8任一项所述的方法，其特征在于，所述第一信号为第一发现信号，所述方法还包括：
    根据所述第一发现信号对应的特征信息，确定所述第一定时器的长度和/或所述第二定时器的长度。
  12. 根据权利要求2所述的方法，其特征在于，所述方法还包括：
    响应于所述第一终端设备进入激活状态的时长达到预设时延限制，所述第一终端设备退出激活状态。
  13. 根据权利要求12所述的方法，其特征在于，所述预设时延限制包括：终端设备间协调信息的时延限制，或者，侧行链路发现过程的时延限制。
  14. 根据权利要求1-13任一项所述的方法，其特征在于，所述终端设备监听侧行链路的传输，包括：
    所述终端设备监听物理侧行链路控制信道PSCCH，和/或，所述终端设备设备监听在物理侧行链路共享信道PSSCH中的侧行链路控制信息SCI。
  15. 一种侧行链路监听装置，其特征在于，所述装置应用于第一终端设备，所述装置包括：
    处理单元，用于响应于发送第一信号，所述第一终端设备进入激活状态；
    收发单元，用于在所述激活状态中，所述第一终端设备监听侧行链路的传输。
  16. 一种通信装置，其特征在于，所述装置包括处理器和存储器，所述存储器中存储有计算机程序，所述处理器执行所述存储器中存储的计算机程序，以使所述装置执行如权利要求1至14中任一项所述的方法。
  17. 一种通信装置，其特征在于，包括：处理器和接口电路；
    所述接口电路，用于接收代码指令并传输至所述处理器；
    所述处理器，用于运行所述代码指令以执行如权利要求1至14中任一项所述的方法。
  18. 一种计算机可读存储介质，用于存储有指令，当所述指令被执行时，使如权利要求1至14中任一项所述的方法被实现。
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CN114071558A (zh) * 2020-08-07 2022-02-18 华为技术有限公司 一种通信方法、装置及计算机可读存储介质

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