WO2022188698A1 - 通信方法和通信装置 - Google Patents

通信方法和通信装置 Download PDF

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Publication number
WO2022188698A1
WO2022188698A1 PCT/CN2022/079206 CN2022079206W WO2022188698A1 WO 2022188698 A1 WO2022188698 A1 WO 2022188698A1 CN 2022079206 W CN2022079206 W CN 2022079206W WO 2022188698 A1 WO2022188698 A1 WO 2022188698A1
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WO
WIPO (PCT)
Prior art keywords
terminal device
information
resource
active state
drx
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PCT/CN2022/079206
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English (en)
French (fr)
Inventor
刘云
徐海博
薛丽霞
Original Assignee
华为技术有限公司
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Priority claimed from CN202110362341.3A external-priority patent/CN115087140A/zh
Application filed by 华为技术有限公司 filed Critical 华为技术有限公司
Publication of WO2022188698A1 publication Critical patent/WO2022188698A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • 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 field of communication, and further, to a communication method and apparatus.
  • DRX discontinuous Reception
  • the purpose is to make the terminal device enter the sleep state when there is no data or the data demand is small, that is, the non-receiving state, thereby reducing the downlink caused by demodulation. Power consumption caused by the signal.
  • the network equipment configures DRX parameters to the terminal equipment, and the terminal equipment determines its DRX active state period and DRX sleep state period according to the parameters, and the network equipment will send downlink data or downlink data when the terminal equipment is in the DRX active state period.
  • the control signal is not sent when the terminal device is in the DRX sleep state.
  • the present application provides a communication method and a communication device, which can reduce the time-misalignment situation of discontinuous reception caused by DTX and reduce the situation of DTX when discontinuous transmission (DTX) occurs.
  • a communication method including: the first terminal device determines that it has not received first feedback information from the second terminal device after sending the first information, and the first information is activated in the first DRX of the second terminal device The first feedback information is used to indicate the reception of the first information by the second terminal device; the first terminal device resends the first information to the second terminal device.
  • the first information includes first control information, the first control information is used to reserve a first resource, and the time domain resource of the first resource is located in a DRX sleep state period after the first DRX active state period.
  • the first terminal device determines that DTX occurs and then re-sends the first information to the second terminal device
  • the first information can be re-sent to the second terminal device by using the DRX active state period as much as possible, and the DTX is reduced as much as possible.
  • the resulting DRX time is not aligned.
  • the first terminal device acquires DRX parameters of the second terminal device; the first terminal device determines the DRX active state period and the DRX sleep state of the second terminal device according to the DRX parameters period; the DRX active state period includes the first DRX active state period, and the first terminal device sends the first information to the second terminal device within the first DRX active state period.
  • the first terminal device determines that the first retransmission resource is greater than or equal to the resource required for transmitting the first information, and the time domain resource of the first retransmission resource starts at the corresponding time.
  • the time of receiving the first feedback information ends at the end time of the first DRX active state period; the first terminal device retransmits the first information to the second terminal device on the first retransmission resource.
  • the first terminal device determines that the first feedback information is not received at the end of the first DRX active state period; the first terminal device determines that the second retransmission resource is greater than or equal to
  • the resources required for transmitting the first information, the time domain resources of the second retransmission resources are the DRX active state period after the first DRX active state period that is within the data packet delay margin range, and the first terminal device is in the second retransmission state period.
  • the first information is resent to the second terminal device on the transmission resource.
  • the first terminal device determines that the first feedback information is not received at the end of the first DRX active state period; the first terminal device determines that the second retransmission resource is less than the transmission A resource required for information, the time domain resource of the second retransmission resource is the DRX active state period after the first DRX active state period that is within the range of the packet delay margin; the first terminal device sends the first resource to the The second terminal device resends the first information.
  • determining that the first terminal device has not received the first feedback information at the end of the first DRX active state period specifically includes: the first retransmission resources are smaller than the resources required for transmitting the first information, or the first terminal device determines that the first feedback information is not received at the first DRX active state period. After resending the first information to the second terminal device on a retransmission resource, the first feedback information is not received.
  • a communication method including: a second terminal device receives first information from a first terminal device within a first DRX active state period, the first information includes first control information, and the first The control information is used to reserve the first resource, and the time domain resource of the first resource is located in the DRX dormant state period after the first DRX active state period; The priority determines the time domain resource state of the first resource, and the first feedback information is used to indicate the reception status of the first information by the second terminal device.
  • the first The second terminal device determines the time-domain resource state of the first resource according to the reception of the first information and/or the priority of the first feedback information, and can take measures to re-receive the first information when DTX occurs or when the reception is successful to avoid wasting resources.
  • the second terminal device determines the time-domain resource state of the first resource according to the reception of the first information or the priority of the first feedback information.
  • the second terminal device determines that the first feedback information is not sent, and the time domain resource of the first resource is converted to an active state.
  • the second terminal device determines that the reception of the first information is successful, and the time domain resources of the first resources remain in a dormant state.
  • the second terminal device determines that it fails to receive the first information at the end of the first DRX active state period, and the time domain resource of the first resource is converted to the active state.
  • the second terminal device determines that the reception of the first information is successful, and the time domain resource of the first resource is converted to an active state.
  • the second terminal device determines the priority of the first feedback information according to the second information, and sends the first feedback information to the first terminal device.
  • the second information includes at least any one of the following:
  • the quantity of the first resource is the quantity of the first resource.
  • the second terminal device determines whether to increase the priority of the first feedback information and the amount of increase in the priority through the second information, and by increasing the priority, the first feedback information that needs to be sent is sent as much as possible to avoid the occurrence of DTX .
  • a communication method including: a second terminal device receives first information from a first terminal device within a first DRX active state period, the first information includes first control information, and the first The control information is used to reserve the first resource, and the time domain resource of the first resource is located in the DRX sleep state period after the first DRX active state period; the second terminal device determines the time domain resource of the first resource according to the reception of the first information. status, the first feedback information is used to indicate the reception status of the first information by the second terminal device.
  • the second terminal device determines the time domain resource state of the first resource according to the reception of the first information, and can take measures to receive the first information again or avoid resource waste when the reception is successful.
  • the second terminal device determines the time domain resource state of the first resource according to the reception of the first information.
  • the second terminal device determines that the reception of the first information is successful, and the time domain resources of the first resources remain in a dormant state.
  • the second terminal device determines that it fails to receive the first information at the end of the first DRX active state period, and the time domain resource of the first resource is converted to the active state.
  • the second terminal device determines that the reception of the first information is successful, and the time domain resource of the first resource is converted to an active state.
  • a communication apparatus including a unit for performing each step of the communication method in the above-mentioned first aspect and its various implementations.
  • a communication apparatus comprising a unit for performing each step of the communication method in the above-mentioned second aspect and its various implementations.
  • a communication apparatus comprising a unit for performing each step of the communication method in the above-mentioned third aspect and its various implementations.
  • a communication device comprising, a processor, and a memory, where the memory is used to store a computer program, and the processor is used to call and run the computer program from the memory, so that the communication device executes the above-mentioned first aspect to A communication method in any one of the third aspects and various implementations thereof.
  • processors there are one or more processors and one or more memories.
  • the memory may be integrated with the processor, or the memory may be provided separately from the processor.
  • the communication device further includes a transmitter (transmitter) and a receiver (receiver).
  • a computer program product comprising: a computer program (also referred to as code, or instructions), which, when the computer program is executed, causes a computer to execute the above-mentioned first to sixth aspects Any one of the three aspects and a communication method in each of its implementations.
  • a computer program also referred to as code, or instructions
  • a ninth aspect provides a computer-readable medium storing a computer program (also
  • code when run on a computer, to cause the computer to perform the communication method in any one of the above-mentioned first to third aspects and implementations thereof.
  • FIG. 1 is a schematic structural diagram of a mobile communication system to which an embodiment of the present application is applied.
  • FIG. 2 is a schematic diagram of an example of a communication method according to an embodiment of the present application.
  • FIG. 3 is a schematic diagram of a time period according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of another example of a communication method according to an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another example of the communication method according to the embodiment of the present application.
  • FIG. 6 is a schematic diagram of a communication device according to an embodiment of the present application.
  • FIG. 7 is a schematic diagram of another communication device according to an embodiment of the present application.
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • CDMA Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GSM Global System of Mobile communication
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • 5G 5th Generation
  • 5G 5th Generation
  • New Radio New Radio
  • the terminal device in this embodiment of the present application may refer to a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent or user device.
  • the terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a wireless communication Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or future evolved Public Land Mobile Networks (PLMN)
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • a terminal device, etc. is not limited in this embodiment of the present application.
  • the DRX mechanism of discontinuous reception is first introduced.
  • the full name of DRX is discontinuous reception.
  • the purpose is to make the terminal device enter a sleep state (sleep) when there is no data or a small data demand, that is, a non-receiving state, thereby reducing the power consumption caused by demodulating downlink signals.
  • the DRX process is usually as follows: First, the base station configures the DRX parameters to the terminal equipment, and the terminal equipment determines when to enter the sleep state and when to enter the receiving/monitoring state according to the DRX parameters, thereby saving power through the sleep state. consumption.
  • the base station will transmit downlink data or downlink control signals to the terminal equipment when the terminal equipment is in an active state, and will not transmit downlink data or control signals when the terminal equipment is in a dormant state.
  • the base station can sense when the terminal device is in an active state and when it is in a dormant state.
  • FIG. 1 is a schematic structural diagram of a mobile communication system to which an embodiment of the present application is applied.
  • the transceivers of wireless communication are terminal devices, which can be in-vehicle communication modules or other embedded communication modules, or user-held terminal devices, including mobile phones, tablet computers, etc.
  • FIG. 2 is a schematic diagram of an example of a communication method according to an embodiment of the present application. As shown in FIG. 2 , the method 200 includes:
  • the first terminal device determines that it has not received the first feedback information from the second terminal device after sending the first information.
  • FIG. 3 is a relationship diagram of each time period in the embodiment of the present application, and an auxiliary description of the embodiment of the present application will be provided below with reference to FIG. 3 .
  • the first information is sent within the first DRX active state period.
  • the first DRX active state period may, for example, specifically refer to the complete DRX active state period in a certain cycle
  • the first terminal device sends the first information for the first time at a certain time point within the first DRX active state period.
  • the first terminal device before sending the first information to the second terminal device, the first terminal device needs to obtain the DRX parameter of the second terminal device, and further, the DRX parameter of the second terminal device is determined according to the DRX parameter Active state period and DRX sleep state period. It should be noted that the DRX active state period and the DRX sleep state period determined by the first terminal device are inferred by the first terminal device according to the DRX parameters, because the first terminal device cannot sense in real time whether the second terminal device is in the active state or not. In the dormant state, the first terminal device needs to speculate according to the DRX parameter, and send information to the second terminal device within the estimated DRX active state period of the second terminal device.
  • the second terminal device can receive information only when it is in an active state, and cannot receive information when it is in a dormant state.
  • the active state and the dormant state may be the DRX active state or DRX configured by the network device for the second terminal device.
  • the dormant state, or the second terminal device can be converted from the DRX dormant state to the active state according to the situation, but when the second terminal device is converted from the dormant state to the active state according to the situation, the first terminal device cannot perceive and cannot Deduced from the previously obtained DRX parameters, only reasonable guesses can be made based on, for example, preset rules.
  • the first terminal device may determine that DTX occurs if it does not receive the first feedback information after the first time after sending the first information, and the first time may be a preset time by the first terminal device that should receive the first feedback. time for feedback. For example, if the first terminal device does not receive the first feedback information on certain symbols after sending the first information, it is determined that DTX occurs, and the certain symbols are the time after a preset interval after the first terminal device sends the first information. The penultimate and third symbols on the slot.
  • the first feedback information includes the reception status of the first information by the second terminal device.
  • the first terminal device if there is no feedback channel between the first terminal device and the second terminal device, the first terminal device cannot receive the first feedback information from the second terminal device. If a terminal device has not received the first feedback information, the first terminal device will always retransmit on available resources.
  • the first terminal device resends the first information to the second terminal device.
  • the first terminal device determines whether the first retransmission resources are greater than or equal to the resources required for sending the first information after determining that the first information is sent for the first time and has not received the first feedback information.
  • the device needs to determine whether there is a first retransmission resource, and if there is a first retransmission resource, whether the first retransmission resource is greater than or equal to the resource required for sending the first information.
  • the first retransmission resource is located in the time domain from the time A when the first feedback information should be received, and ends at the end time B of the first DRX active state period.
  • the first terminal device resends the first retransmission resource on the first retransmission resource. a message. It should be noted that, if the first terminal device sends the first information for the first time and does not receive the first feedback information, the time domain resource of the first retransmission resource starts at the time when the first feedback information should be received for the first transmission.
  • the time domain resource of the first retransmission resource starts at the time when the first feedback information should be received after resending.
  • the first terminal device determines whether the remaining resources of the first DRX active state period, that is, the first retransmission resources, are greater than or equal to the resources required for sending the first information. or equal to the resources required for sending the first information, the first information is repeatedly sent until the first feedback information is received, or until the first DRX active state period ends.
  • the first terminal device determines that the first feedback information sent from the second terminal device has not been received at the end of the first DRX active state period (for example, the determination process may be: the first terminal device determines that the first time After sending the first information, the first feedback information sent from the second terminal device has not been received and the first retransmission resources are smaller than the resources required for sending the first information, or the first terminal device has not received the first feedback information after sending the first information for the first time.
  • the first feedback information sent by the second terminal device and the first retransmission resource is greater than or equal to the resource required for sending the first information
  • the first terminal device repeatedly sends the first information on the first retransmission resource until the first retransmission
  • the resources are exhausted and the first feedback information has not been received, so that the first terminal device has not received the first feedback information at the end of the first DRX active state period)
  • the first terminal device determines the second retransmission resource (for example, the first terminal device In the time domain, the retransmission resource is part or all of a DRX active state period after the first DRX active state period and within the data packet delay margin range, or it can be a data packet located after the first DRX active state period.
  • the time domain resource of the second retransmission resource is located in the DRX active state period within the range of the data packet delay margin after the first DRX active state period.
  • the first terminal device determines that the second retransmission resource is greater than or equal to the resources required for sending the first information, in other words, there is a second retransmission resource that can carry the first information, the first terminal device will use the second retransmission resource Repeat sending the first information on the above.
  • the first terminal device determines that the first feedback information sent from the second terminal device has not been received at the end of the first DRX active state period (the determination process is similar to the above-mentioned embodiment), and the first terminal device determines that The second retransmission resource is less than the resource required for sending the first information, and the first terminal device sends the first information on the first resource.
  • the first retransmission resource and the second retransmission resource are selected by the first terminal device according to information such as a perception result.
  • the first resource is a reserved resource indicated by the first control information
  • the first control information is included in the first information
  • the time domain resource of the first resource is located in the first DRX active state period of the second terminal device In the subsequent DRX sleep state period, the number of the first resources may be one, two or three. It should be noted that the time domain resource of the first resource is located in the DRX sleep state period after the first DRX active state period, and the first information should not be received, but the first terminal device has not received the transmission from the second terminal device.
  • the first feedback information of the second terminal device is guessed that after a certain situation occurs at the second terminal device, the second terminal device will convert the time domain resource corresponding to the first resource from the dormant state to the active state to receive the resent first information.
  • a certain situation that occurs at the secondary device will be described in detail in the following embodiments.
  • There is a risk in resending the first information on the first resource that is, the second terminal device does not convert the time domain resource corresponding to the first resource from the dormant state to the active state, even if the first terminal device resends the first information, the second terminal The device cannot receive either.
  • the first information includes first control information and data.
  • the first control information includes information about reserving the first resource, and also includes information about demodulated data.
  • the information of the demodulated data includes information such as the ID of the target terminal device of the data information.
  • the second terminal device demodulates the first control information and demodulates the ID of the target terminal device, and finds that it is the target terminal device. In this case, if a feedback channel is configured between the first terminal device and the second terminal device, the second terminal device will send first feedback information to the first terminal device according to the data reception situation, and the first feedback information indicates that Regarding the reception situation of the first information, further, the first feedback information indicates the reception situation of the data information by the target terminal device.
  • the target terminal device is the second terminal device.
  • the second terminal device successfully demodulates the target terminal device ID in the first control information, finds that the target terminal device is itself, and will According to the reception of the data information, the first feedback information is sent to the first terminal device.
  • the second terminal device fails to demodulate the first control information included in the first information, specifically, fails to demodulate the target terminal device ID included in the first control information, and further, the second terminal device cannot Knowing the first resource, the data information cannot be demodulated. Therefore, the second terminal device does not send the first feedback information.
  • the second terminal device successfully demodulates the first control information included in the first information, and further, sends the first feedback information, but due to insufficient power (the second device needs to feed back multiple pieces of information at the same time, wherein the first feedback information is The first feedback information is not sent because the priority is low and the power of the second device is limited (not sent).
  • the first feedback information may be NACK; It is determined that the ID of the target terminal device is itself, and further, if the data information is successfully demodulated, the first feedback information may be ACK.
  • the second terminal device successfully demodulates the first control information included in the first information, and further sends the first feedback information.
  • the first feedback information may be NACK; optionally, if the first control information and data information are successfully demodulated, the first feedback information may be for ACK.
  • the first terminal device does not receive the first feedback information for some reason. As an example and not a limitation, the reason that the first terminal device fails to receive the first feedback information may be poor channel quality or interference.
  • the first terminal device determines that DTX occurs, since the first terminal device does not know the reception status of the second terminal device, the first information is retransmitted in the DRX active state period as far as possible within the range allowed by the delay. , increasing the possibility that the second terminal device receives the first information.
  • FIG. 4 is a schematic diagram of another example of the communication method according to the embodiment of the present application. As shown in FIG. 4 , the method 400 includes:
  • the second terminal device receives the first information from the first terminal device.
  • the first information includes first control information, the first control information is used to reserve a first resource, and the time domain resource of the first resource is located in a DRX sleep state period after the first DRX active state period of the second terminal device,
  • first control information is used to reserve a first resource
  • time domain resource of the first resource is located in a DRX sleep state period after the first DRX active state period of the second terminal device
  • the first information also includes data information
  • the first control information includes some information used for demodulating the data information in addition to reserving the first resource.
  • the second terminal device successfully demodulates the first control information to know the reservation status of the first resource and successfully demodulates the data information is said to have successfully received the first information; it is said that the second terminal device successfully demodulates the first information. If the control information learns the reservation situation of the first resource but fails to demodulate the data information, it is a failure to receive the first information.
  • the second terminal device determines the time domain resource state of the first resource according to the reception of the first information and/or the priority of the first feedback information.
  • the first terminal device and the second terminal device work on a resource pool
  • the configuration parameters of the resource pool include feedback channel parameters, the second terminal device, the first terminal device and other terminal devices working in the resource pool
  • the time domain position of the feedback channel is determined according to the resource pool configuration parameters.
  • the position of the feedback channel has a corresponding relationship with the time domain position of the transmitted data. Therefore, when the first terminal device sends data to the second terminal device, the two The time domain position determines the position of the feedback channel, and then the second terminal device sends the feedback information at the above-mentioned corresponding position, and the first terminal device receives the feedback information at the corresponding position.
  • the second terminal device converts the time domain resource corresponding to the first resource from the dormant state to the active state, and the second terminal device does not send the first feedback information.
  • the reason may be that the priority of the first feedback information is not in the sending sequence of the feedback channel, and the second terminal equipment does not send the first feedback information due to insufficient power.
  • the second terminal equipment determines that the first terminal equipment will judge DTX occurs, so the time domain resource corresponding to the first resource is switched from the dormant state to the active state, so as to receive the first information retransmitted by the first terminal device.
  • the second terminal device succeeds in receiving the first information, the first feedback information may be ACK, the first feedback information is not sent, and the time domain resource corresponding to the first resource is converted from a dormant state to an active state; optionally, The second terminal device fails to receive the first information, the first feedback information may be NACK, the first feedback information is not sent, and the time domain resource corresponding to the first resource is converted from a dormant state to an active state.
  • the second terminal device if the second terminal device succeeds in receiving the first information, the second terminal device remains in a dormant state in the time domain resource corresponding to the first resource.
  • the protocol defines the first resource for performing the first In the retransmission of information, the second terminal device has successfully received the first information, and the second terminal device determines that it does not need to receive the retransmitted first information, and the second terminal device maintains a dormant state on the first resource.
  • the second terminal device successfully receives the first information and does not send the first feedback information, and the second terminal device maintains a dormant state on the first resource; optionally, the second terminal device successfully receives the first information and sends the first information.
  • One feedback information, the first feedback information may be ACK, and the second terminal device maintains a dormant state on the first resource.
  • the second terminal device if the second terminal device fails to receive the first information at the end of the first DRX active state period, the second terminal device transitions from the dormant state to the active state in the time domain resource corresponding to the first resource. In this case , regardless of whether the first resource is used for retransmission or other data transmission, the second terminal device expects the first terminal device to re-send the first information on the first resource, so the second terminal device uses the time corresponding to the first resource The domain resource transitions from the dormant state to the active state, and expects to receive the retransmitted first information on the first resource.
  • the second terminal device fails to receive the first information at the end of the first DRX active state period, and does not send the first feedback information, and the second terminal device transitions from a dormant state to an active state in a time domain resource corresponding to the first resource;
  • the second terminal device fails to receive the first information at the end of the first DRX active state period, and sends the first feedback information.
  • the first feedback information may be NACK, and the time domain resource corresponding to the first resource by the second terminal device The dormant state is converted into an active state.
  • the second terminal device if the second terminal device successfully receives the first information, the second terminal device transitions from the dormant state to the active state in the time domain resource corresponding to the first resource. In this case, the protocol definition or the first terminal device If the sending indication information indicates that the first resource can be used for transmission of other data, the second terminal device switches from the dormant state to the active state in the time domain resource corresponding to the first resource in order to prevent failure of receiving other data.
  • the second terminal device succeeds in receiving the first information and does not send the first feedback information, and the second terminal device transitions from a dormant state to an active state in a time domain resource corresponding to the first resource; optionally, the second terminal device When the first information is received successfully, the first feedback information is sent, and the first feedback information may be ACK, and the second terminal device transitions from the sleep state to the active state in the time domain resource corresponding to the first resource.
  • the first terminal device and the second terminal device cannot perceive each other, so the second terminal device will guess according to, for example, the pre-defined protocol or its own situation.
  • the behavior of the first terminal device to ensure the least waste of resources and receive retransmission information as much as possible.
  • the second terminal device determines the priority of the first feedback information, and further sends the first feedback information.
  • step S420 and step S430 are in no particular order, and both can be executed in parallel.
  • the priority of the first feedback information may be determined first, but the first feedback information may still not be sent on the feedback channel due to the priority sequence but not sent.
  • the second terminal device will try to increase the priority of the first feedback information on the feedback channel, so that the first feedback information can be sent as much as possible, and avoid the first feedback information in some scenarios. Not sending has a greater impact on the second terminal device and the first terminal device.
  • the second terminal device mainly determines the priority of the first feedback information according to the second information, and the second information includes at least one of the following: retransmission resource reservation within the DRX active state period of the second terminal device, the second terminal device For the reception situation of the first information, the quantity of the first resource.
  • the second terminal device determines to increase the priority of the first feedback information to a certain level or determines the priority increase amount of the first feedback information.
  • the second terminal device will increase the priority of the first feedback information when the following conditions are met:
  • the first terminal device reserves the first resource in the DRX sleep state.
  • the second terminal device regardless of whether the second terminal device determines whether the first feedback information is NACK or ACK according to the reception of the first information, and it satisfies that the first terminal device has reserved the first resource in the DRX sleep state, then The second terminal device increases the priority of the first feedback information.
  • the second terminal device determines, according to the number of the first resources, the amount of increasing the priority of the first feedback information.
  • the second terminal device will increase the priority of the first feedback information when the following conditions are met:
  • the first terminal device does not reserve retransmission resources within the DRX active state period of the second terminal device
  • the first terminal device reserves the first resource within the DRX sleep state period of the second terminal device
  • the second terminal device determines that the first feedback information is ACK according to the reception of the first information.
  • the second terminal device determines, according to the number of the first resources, the amount of increasing the priority of the first feedback information.
  • the second terminal device will increase the priority of the first feedback information when the following conditions are met:
  • the first terminal device does not reserve retransmission resources within the DRX active state period of the second terminal device
  • the first terminal device reserves the first resource within the DRX sleep state period of the second terminal device
  • the second terminal device determines that the first feedback information is NACK according to the reception of the first information.
  • the second terminal device determines, according to the number of the first resources, the amount of increasing the priority of the first feedback information.
  • the method for increasing the priority is specifically: the second terminal device determines N pieces of feedback information to be sent, and the priority of the feedback information with the lowest priority among the N pieces of feedback information If the value is K, then increase the priority of the first feedback information to be higher than or equal to the priority of the feedback information whose priority value is K, or update the priority value of the first feedback information to a value less than or equal to K , so that the improved priority is higher than or equal to the priority of the feedback information whose priority value is K, thereby ensuring that the first feedback information can be sent. It should be understood that the smaller the priority value, the higher the priority level and the easier it is to be sent.
  • a feedback channel is configured between the second terminal device and the first terminal device.
  • the second terminal device determines the priority of the first feedback information according to the second information, so that the first feedback information can be fully may be sent to avoid the occurrence of DTX.
  • the second terminal device determines the time domain resource state corresponding to the first resource according to the reception of the first information, and has tried its best to receive the retransmitted first information. Can receive, and avoid resource waste.
  • the second terminal device may determine the priority of the feedback information according to the third information, where the third information includes but is not limited to at least any one of the following: transmission type, terminal resource selection type, first information demodulation result, DRX parameter, first number of resources.
  • the terminal device determines, according to the third information, to increase the priority of the feedback information to a certain level or determine the amount of priority increase of the feedback information. The more the third information is satisfied, or the greater the requirement that the feedback information needs to be sent successfully, the higher the priority of the feedback information is.
  • the transmission type may be: multicast or unicast.
  • the terminal resource selection type may be: full perception, partial perception, and random selection.
  • all sensing means sensing on all time slots, and resources are selected according to the sensing results; partial sensing means sensing on some time slots to reduce power consumption, and resources are only selected according to the sensing results on some time slots; Random selection means no perception and random selection of resources.
  • the priority of the feedback information is increased. If the terminal device is a terminal device with limited power consumption such as partial sensing and random selection, the priority of the feedback information is increased.
  • FIG. 5 is a schematic diagram of another example of a communication method according to an embodiment of the present application. As shown in FIG. 5 , the method 500 includes:
  • the second terminal device receives the first information from the first terminal device.
  • S520 The second terminal device determines the time domain resource state of the first resource according to the reception of the first information.
  • the second terminal device there is no feedback channel between the second terminal device and the first terminal device, or, a feedback channel is configured between the second terminal device and the first terminal device, but the first information carries the disabled
  • the feedback indication is included in the first control information, and the second terminal device can only judge the state of the time domain resource corresponding to the first resource according to its own reception of the first information and protocol pre-definition.
  • the parameter of the disable indication may be HARQ feedback enabled/disabled indicator, for example, the parameter may be 1 bit.
  • the second terminal device if the second terminal device successfully receives the first information, the second terminal device maintains a dormant state in a time domain resource corresponding to the first resource.
  • the protocol defines that the first resource can be used to retransmit the first information, and the second terminal device has successfully received the first information, then the second terminal device determines that it does not need to receive the retransmitted first information. , the second terminal device remains in a dormant state on the first resource.
  • the second terminal device if the second terminal device fails to receive the first information at the end of the first DRX active state period, the second terminal device transitions from the dormant state to the active state in the time domain resource corresponding to the first resource. In this case, regardless of whether the first resource is used for retransmission or other data transmission, the second terminal device expects the first terminal device to re-send the first information on the first resource, so the second terminal device uses the time corresponding to the first resource The domain resource transitions from the dormant state to the active state, and expects to receive the retransmitted first information on the first resource.
  • the second terminal device if the second terminal device successfully receives the first information, the second terminal device transitions from the dormant state to the active state in the time domain resource corresponding to the first resource.
  • the protocol definition or the first terminal When the device sends the indication information indicating that the first resource can be used for transmission of other data, the second terminal device converts the time domain resource corresponding to the first resource from the dormant state to the active state in order to prevent failure to receive other data.
  • the second terminal device sets the state of the time domain resource of the first resource by receiving the first information, thereby The first information re-sent by the first terminal device is received as far as possible in the case of failure to receive the first information, and the loss of power consumption caused by repeated reception of the first information is avoided as far as possible in the case of successful reception of the first information.
  • the first terminal device after the first terminal device transmits for the first time, the first terminal device detects DTX, performs resource selection on resources between the end of the DRX active state, and performs one or more retransmissions, without considering the DRX mechanism for the reservation It will be transmitted on the original second and third retransmission resources. However, because it is unknown whether the second terminal device starts the retransmission time on the second and third retransmission resources and enters the active state, it will appear question.
  • the resource positions of the original second and third retransmissions are carried in the retransmission, so as to avoid waste of resources.
  • the third retransmission resource is transmitted; because at this time, the first terminal device considers that the second terminal device has successfully received the control information and switches to the active state on the reserved resource. If the new retransmission still encounters DTX, and the remaining DRX active state period is not enough for resource selection and retransmission, the retransmission will not be transmitted at the original second and third resource positions, that is, the original second and third resources above.
  • the location is an unavailable resource (DRX sleep state period).
  • NACK or ACK has not been received, that is, the first feedback information. Retransmit on the resource.
  • the PSFCH resource is not configured when the resource pool is configured, that is, the value of the parameter "sl-HARQ-FeedbackEnabled" when the resource pool is configured corresponds to "disabled".
  • the second terminal device will not feed back ACK/NACK information regardless of the demodulation result, because there is no PSFCH resource in the resource pool.
  • the first terminal device needs to classify the resources reserved for the first transmission. If the resources reserved for the first transmission are not used by the current second terminal device, the location of the reserved resources is the same as the current second terminal device.
  • the DRX active state period is irrelevant; if the resource reserved for the first transmission is for the current second terminal device, whether it is used for retransmission or new transmission of a data block, it needs to be within the DRX active state period of the current second terminal device. ; For the first transmission, multiple resources are reserved, some of which are for the current second terminal equipment, and the other is for other terminal equipment. The reserved resources for the current Rx UE need to be within the range of the DRX active state period, and for other terminal equipment The reserved resources do not need to consider the DRX active state period of the second terminal device. In this scenario, for the second terminal device, since there is no PSFCH feedback channel, the first terminal device cannot be informed whether the initial transmission is received successfully or not.
  • the second terminal device only receives the first terminal device during the DRX active state period. If the first terminal device receives the reserved resources within the DRX dormant state period, in one implementation, the second terminal device maintains the DRX dormancy state during the above reserved resource period, and in another implementation, when the first When the second terminal device still fails to receive the PSSCH before the end of the DRX active state period, the second terminal device maintains the DRX active state during the above-mentioned reserved resource period, and when the second terminal device still succeeds in receiving the PSSCH before the end of the DRX active state period , the second terminal device maintains the DRX sleep state during the above-mentioned reserved resource period, that is, whether the second terminal device wakes up on the resources reserved within the DRX sleep state period is determined according to whether the reception of data within the DRX active state period is successful.
  • the second terminal device circumvents the DTX situation to a certain extent by increasing the priority of the PSFCH.
  • retransmission resources outside the range are reserved, and when the initial transmission feedback is NACK, increase the priority of its PSFCH to a certain level or increase its PSFCH The priority is to a certain level.
  • This method is to give priority to the successful transmission of the data corresponding to the NACK.
  • a case b there is no retransmission resource reservation within the DRX active state period, and retransmission resources outside the range are reserved, and when the initial transmission feedback is ACK, increase the priority of its PSFCH to a certain level or increase its PSFCH
  • the priority is set to a certain level; similar to the above, the priority increase amount is configured according to the reserved number of retransmission resources (1 or 2 or 3) within the DRX sleep state range.
  • the PSFCH priority is increased to a certain level or the PSFCH priority is increased to a certain level.
  • the problem of inconsistent understanding of the time in the active state of DRX caused by DTX can be avoided as much as possible.
  • the activation caused by DTX can be reduced as much as possible by adjusting the increase amount of the priority or increasing the priority to the priority. Inconsistent duration.
  • FIG. 6 is a schematic diagram of a communication apparatus 600 according to an embodiment of the present application. Each unit in the communication apparatus 600 may be implemented by software.
  • the communication apparatus 600 includes a transceiver unit 610 and a processing unit 620 .
  • the communication apparatus 600 may be the first terminal device in the above method embodiments, or may be a chip for implementing the functions of the first terminal device in the above method embodiments. It should be understood that the communication apparatus 600 may correspond to the first terminal device in the methods 200, 400, and 500 according to the embodiments of the present application, and the communication apparatus 600 may execute the methods 200, 400, and 500 of the embodiments of the present application Steps corresponding to the first terminal device in . It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above-mentioned method embodiments, and for the sake of brevity, it will not be repeated here.
  • the communication apparatus 600 may be the second terminal device in the above method embodiments, or may be a chip for implementing the functions of the second terminal device in the above method embodiments. It should be understood that the communication apparatus 600 may correspond to the second terminal device in the methods 200, 400, and 500 according to the embodiments of the present application, and the communication apparatus 600 may execute the methods 200, 400, and 500 of the embodiments of the present application Steps corresponding to the second terminal device in . It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above-mentioned method embodiments, and for the sake of brevity, it will not be repeated here.
  • FIG. 7 is a schematic diagram of a communication apparatus 700 according to an embodiment of the present application.
  • the communication apparatus 700 includes a transceiver 710 and a processor 720 .
  • the transceiver 710 in the communication device 700 may correspond to the transceiver unit 610 in the communication device 600
  • the processor 720 in the communication device 700 may correspond to the processing unit 620 in the communication device 600 .
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of the units is only a logical function division. In actual implementation, there may be other division methods.
  • multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the functions, if implemented in the form of software functional units and sold or used as independent products, may be stored in a computer-readable storage medium.
  • the technical solution of the present application can be embodied in the form of a software product.
  • the computer software product is stored in a storage medium and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network). equipment, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

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Abstract

本申请提供了一种通信方法和通信装置，本实施例提供的方法可以应用于通信***，例如4G、5G、V2X、LTE-V、V2V、车联网、MTC、IoT、LTE-M，M2M、物联网、侧行通信等，该方法包括：第一终端设备确定发送第一信息后未接收到来自第二终端设备的第一反馈信息，第一终端设备向第二终端设备重新发送第一信息。第二终端设备接收来自第一终端设备的第一信息，并根据对第一信息的接收情况或第一反馈信息的优先级确定位于DRX休眠态的第一资源的时域资源状态。通过本申请提供的通信方法和装置，能够尽可能利用DRX激活态时段向第二终端设备重新发送第一信息，减少不连续传输DTX造成的DRX时间不对齐情况。

Description

通信方法和通信装置
本申请要求于2021年03月11日提交中国专利局、申请号为202110268104.0、申请名称为“一种DRX场景下重传资源选择方法”和2021年04月02日提交中国专利局、申请号为202110362341.3、申请名称为“通信方法和通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信领域，进一步地，涉及一种通信方法和装置。
背景技术
在网络设备到终端设备(UTRAN-to-UE，Uu)空口传输中，无线通信的双方包括网络设备和终端设备。在Uu空口传输中，存在不连续接收(Discontinuous Reception，DRX)机制，目的在于令终端设备在没有数据或数据需求量较少的时候，进入休眠状态，即不接收状态，从而减少因解调下行信号带来的功耗。在DRX机制中，网络设备配置DRX参数给终端设备，终端设备根据该参数确定其DRX激活态时段和DRX休眠态时段，而网络设备就会在终端设备处于DRX激活态时段时发送下行数据或下行控制信号，并在终端设备处于DRX休眠态时不进行发送。
而将DRX机制引入到侧行链路(Sidelink，SL)空口传输中时，由于不存在网络设备这样一个核心控制节点，缺少统一配置所有终端设备DRX参数的机制，因此需要重新基于SL空口传输的分布式***确定新的规则。
发明内容
本申请提供一种通信方法和通信装置，能够在发生不连续传输(Discontinuous transmission，DTX)时减少DTX造成的不连续接收时间不对齐情况和减少DTX情况。
第一方面，提供了一种通信方法，包括：第一终端设备确定发送第一信息后未接收到来自第二终端设备的第一反馈信息，第一信息在第二终端设备的第一DRX激活态时段内被发送，第一反馈信息用于指示第二终端设备对第一信息的接收情况；第一终端设备向第二终端设备重新发送第一信息。
其中，第一信息包括第一控制信息，第一控制信息用于预约第一资源，第一资源的时域资源位于第一DRX激活态时段后的DRX休眠态时段。
根据本申请提供的通信方法，通过第一终端设备确定发生DTX后重新向第二终端设备发送第一信息，能够尽可能利用DRX激活态时段向第二终端设备重新发送第一信息，尽量减少DTX造成的DRX时间不对齐情况。
结合第一方面，在第一方面的某些实现方式中，第一终端设备获取第二终端设备的DRX参数；第一终端设备根据DRX参数确定第二终端设备的DRX激活态时段和DRX休 眠态时段；DRX激活态时段包括第一DRX激活态时段，第一终端设备在第一DRX激活态时段内向第二终端设备发送第一信息。
结合第一方面，在第一方面的某些实现方式中，第一终端设备确定第一重传资源大于或等于传输第一信息所需的资源，第一重传资源的时域资源开始于应收到第一反馈信息的时间，结束于第一DRX激活态时段的结束时间；第一终端设备在第一重传资源上向第二终端设备重新发送第一信息。
结合第一方面，在第一方面的某些实现方式中，第一终端设备确定在第一DRX激活态时段结束未收到第一反馈信息；第一终端设备确定第二重传资源大于或等于传输第一信息所需的资源，第二重传资源的时域资源为第一DRX激活态时段后的位于数据包时延余量范围内的DRX激活态时段，第一终端设备在第二重传资源上向第二终端设备重新发送第一信息。
结合第一方面，在第一方面的某些实现方式中，第一终端设备确定在第一DRX激活态时段结束未收到第一反馈信息；第一终端设备确定第二重传资源小于传输第一信息所需的资源，第二重传资源的时域资源为第一DRX激活态时段后的位于数据包时延余量范围内的DRX激活态时段；第一终端设备在第一资源上向第二终端设备重新发送第一信息。
其中，第一终端设备确定在第一DRX激活态时段结束未收到第一反馈信息，具体包括：第一重传资源小于传输第一信息所需的资源，或，第一终端设备确定在第一重传资源上向第二终端设备重新发送第一信息后未收到第一反馈信息。
第二方面，提供了一种通信方法，包括：第二终端设备在第一不连续接收DRX激活态时段内接收来自第一终端设备的第一信息，第一信息包括第一控制信息，第一控制信息用于预约第一资源，第一资源的时域资源位于第一DRX激活态时段后的DRX休眠态时段；第二终端设备根据对第一信息的接收情况和/或第一反馈信息的优先级确定第一资源的时域资源状态，第一反馈信息用于指示第二终端设备对第一信息的接收情况。
根据本申请提供的通信方法，在第二终端设备和第一终端设备之间配置有反馈信道或第二终端设备和第一终端设备之间配置有反馈信道且反馈信道使能的情况下，第二终端设备根据对第一信息的接收情况和/或第一反馈信息的优先级确定第一资源的时域资源状态，能够在发生DTX时尽量采取措施重新接收第一信息或在接收成功的情况下避免资源浪费。
结合第二方面，在第二方面的某些实现方式中，第二终端设备根据对第一信息的接收情况或第一反馈信息的优先级确定所述第一资源的时域资源状态。
可选的，第二终端设备确定未发送第一反馈信息，在第一资源的时域资源转换为激活态。
可选的，第二终端设备确定接收第一信息成功，在第一资源的时域资源保持休眠态。
可选的，第二终端设备确定在第一DRX激活态时段结束接收第一信息失败，在第一资源的时域资源转换为激活态。
可选的，第二终端设备确定接收第一信息成功，在第一资源的时域资源转换为激活态。
结合第二方面，在第二方面的某些实现方式中，第二终端设备根据第二信息确定第一反馈信息的优先级，并向第一终端设备发送第一反馈信息。第二信息包括以下至少任意一项：
DRX激活态时段范围内重传资源预约情况，
第二终端设备对第一信息的接收情况，
第一资源的数量。
该第二终端设备通过第二信息确定是否提高第一反馈信息的优先级及优先级的提高量，通过提高优先级，使有必要被发送的第一反馈信息尽可能发送出去，避免DTX的发生。
第三方面，提供了一种通信方法，包括：第二终端设备在第一不连续接收DRX激活态时段内接收来自第一终端设备的第一信息，第一信息包括第一控制信息，第一控制信息用于预约第一资源，第一资源的时域资源位于第一DRX激活态时段后的DRX休眠态时段；第二终端设备根据对第一信息的接收情况确定第一资源的时域资源状态，第一反馈信息用于指示第二终端设备对第一信息的接收情况。
根据本申请提供的通信方法，在第二终端设备和第一终端设备之间未配置反馈信道或第二终端设备和第一终端设备之间配置有反馈信道且反馈信道未使能的情况下，第二终端设备根据对第一信息的接收情况确定第一资源的时域资源状态，能够尽量采取措施重新接收第一信息或在接收成功的情况下避免资源浪费。
结合第三方面，在第三方面的某些实现方式中，第二终端设备根据对第一信息的接收情况确定所述第一资源的时域资源状态。
可选的，第二终端设备确定接收第一信息成功，在第一资源的时域资源保持休眠态。
可选的，第二终端设备确定在第一DRX激活态时段结束接收第一信息失败，在第一资源的时域资源转换为激活态。
可选的，第二终端设备确定接收第一信息成功，在第一资源的时域资源转换为激活态。
第四方面，提供了一种通信装置，包括用于执行上述第一方面及其各实现方式中的通信方法的各步骤的单元。
第五方面，提供了一种通信装置，包括用于执行上述第二方面及其各实现方式中的通信方法的各步骤的单元。
第六方面，提供了一种通信装置，包括用于执行上述第三方面及其各实现方式中的通信方法的各步骤的单元。
第七方面，提供了一种通信设备，包括，处理器，存储器，该存储器用于存储计算机程序，该处理器用于从存储器中调用并运行该计算机程序，使得该通信设备执行上述第一方面至第三方面中的任一方面及其各实现方式中的通信方法。
可选地，所述处理器为一个或多个，所述存储器为一个或多个。
可选地，所述存储器可以与所述处理器集成在一起，或者所述存储器与处理器分离设置。
可选的，该通信设备还包括，发射机(发射器)和接收机(接收器)。
第八方面，提供了一种计算机程序产品，所述计算机程序产品包括：计算机程序(也可以称为代码，或指令)，当所述计算机程序被运行时，使得计算机执行上述第一方面至第三方面中的任一方面及其各实现方式中的通信方法。
第九方面，提供了一种计算机可读介质，所述计算机可读介质存储有计算机程序(也
可以称为代码，或指令)当其在计算机上运行时，使得计算机执行上述第一方面至第三方面中的任一方面及其各实现方式中的通信方法。
附图说明
图1是本申请实施例应用的移动通信***的架构示意图。
图2是本申请实施例通信方法的一例的示意图。
图3是本申请实施例时间段示意图。
图4是本申请实施例通信方法的另一例的示意图。
图5是本申请实施例通信方法的又一例的示意图。
图6是本申请实施例的一个通信装置示意图。
图7是本申请实施例的另一个通信装置示意图。
具体实施方式
下面将结合附图，对本申请中的技术方案进行描述。
本申请实施例的技术方案可以应用于各种通信***，例如：全球移动通讯(Global System of Mobile communication，GSM)***、码分多址(Code Division Multiple Access，CDMA)***、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)***、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)***、LTE频分双工(Frequency Division Duplex，FDD)***、LTE时分双工(Time Division Duplex，TDD)、通用移动通信***(Universal Mobile Telecommunication System，UMTS)、全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信***、第五代(5th Generation，5G)***或新无线(New Radio，NR)等。
本申请实施例中的终端设备可以指用户设备、接入终端、用户单元、用户站、移动站、移动台、远方站、远程终端、移动设备、用户终端、终端、无线通信设备、用户代理或用户装置。终端设备还可以是蜂窝电话、无绳电话、会话启动协议(Session Initiation Protocol，SIP)电话、无线本地环路(Wireless Local Loop，WLL)站、个人数字处理(Personal Digital Assistant，PDA)、具有无线通信功能的手持设备、计算设备或连接到无线调制解调器的其它处理设备、车载设备、可穿戴设备，未来5G网络中的终端设备或者未来演进的公用陆地移动通信网络(Public Land Mobile Network，PLMN)中的终端设备等，本申请实施例对此并不限定。
为了便于实施例的描述，首先对不连续接收DRX机制进行介绍。
DRX全称为不连续接收，目的在于令终端设备在没有数据或者数据量需求较小的时候，进入休眠状态(sleep)，即不接收状态，从而减少因解调下行信号带来的功耗。在基站和UE通信时，DRX的流程通常为：首先，由基站配置DRX参数给终端设备，终端设备根据DRX参数确定什么时候进入休眠状态，什么时候进入接收/监听状态，从而通过休眠状态节约功耗。基站会在终端设备处于激活状态对终端设备进行下行数据或下行控制信号的发送，并在终端设备处于休眠状态时，不进行下行数据或控制信号的发送。在基站和终端设备的通信中，基站可以感知终端设备何时处于激活状态，何时处于休眠状态。
将DRX机制引入到侧行链路(Sidelink，SL)空口传输中时，由于不存在基站这样一个核心控制节点，缺少统一配置所有终端设备DRX参数的机制，因此需要重新基于SL空口传输的分布式***确定新的规则。
如图1所示为本申请实施例应用的移动通信***的架构示意图。
在SL空口传输中，无线通信的收发端都是终端设备，该终端设备可以是车载通信模块或其他嵌入式通信模块，也可以是用户手持终端设备，包括手机，平板电脑等。
如图2为本申请实施例通信方法的一例的示意图，如图2所示，该方法200包括：
S210，第一终端设备确定发送第一信息后未收到来自第二终端设备的第一反馈信息。
如图3为本申请实施例中各时段的关系图，下面将结合图3对本申请实施例进行辅助说明。
需要说明的是，该第一信息是在第一DRX激活态时段内发送的，如图3所示，该第一DRX激活态时段可以例如特指某一个周期内的完整的DRX激活态时段，该第一终端设备在第一DRX激活态时段内的某个时间点初次发送该第一信息。可选的，该第一终端设备在初次发送该第一信息之前，需确定该某个时间点到该第一DRX时段结束之间的可用资源大于或等于发送该第一信息所需要的资源，即存在资源承载该初次发送的第一信息。
在一种可能的实现方式中，第一终端设备在向第二终端设备发送第一信息之前，需要获取该第二终端设备的DRX参数，进一步的，根据该DRX参数确定第二终端设备的DRX激活态时段和DRX休眠态时段。需要说明的是，该第一终端设备确定的DRX激活态时段和DRX休眠态时段是第一终端设备根据DRX参数推测得出的，由于第一终端设备不能实时感知第二终端设备处于激活态还是休眠态，因此第一终端设备需要根据DRX参数推测，在推测的第二终端设备的DRX激活态时段内向第二终端设备发送信息。
需要说明的是，第二终端设备在处于激活态时，才能接收信息，在休眠态时，不能接收信息，该激活态和休眠态可以是网络设备给第二终端设备配置的DRX激活态或DRX休眠态，也可以是第二终端设备根据情况从DRX休眠态中转换为激活态，但该第二终端设备根据情况由休眠态转换为激活态时，第一终端设备是无法感知的，也无法通过先前获得的DRX参数推测得出，只能根据例如预设的规则进行合理的猜测。
在一些实施例中，第一终端设备确定发送第一信息后未接收到来自第二终端设备的第一反馈信息，则断定发生不连续传输DTX。可选的，该第一终端设备可以在发送第一信息后经过第一时间未接收到第一反馈信息则断定发生DTX，该第一时间可以是该第一终端设备预设的应该收到第一反馈信息的时间。例如，第一终端设备在发送第一信息后在某些符号上未接收到第一反馈信息则断定发生DTX，该某些符号为第一终端设备发送第一信息后一个预设间隔后的时隙上倒数第二和第三个符号。
第一反馈信息包含该第二终端设备对第一信息的接收情况。
在一些实施例中，该第一终端设备和第二终端设备之间不存在反馈信道，则该第一终端设备不能收到来自第二终端设备的第一反馈信息，在这种情况下，第一终端设备一直未收到第一反馈信息，则第一终端设备会在可用的资源上一直进行重传。
S220，第一终端设备向第二终端设备重新发送第一信息。
在一些实施例中，第一终端设备确定初次发送第一信息未收到第一反馈信息，则判断第一重传资源是否大于或等于发送第一信息所需要的资源，进一步说，第一终端设备需判断是否存在第一重传资源，若存在第一重传资源，该第一重传资源是否大于或等于发送第一信息所需要的资源。该第一重传资源在时域上位于从应该收到第一反馈信息的时间A开始，到第一DRX激活态时段的结束时间B结束，换句话说，该判断第一重传资源是否大 于或等于发送第一信息所需要的资源也可以理解为，在A到B中间的任一时隙上是否存在能够承载第一信息的资源。若该第一重传资源大于或等于发送第一信息所需要的资源，换句话说，存在第一重传资源能够承载第一信息，则第一终端设备在第一重传资源上重新发送第一信息。需要特别说明的是，若第一终端设备初次发送第一信息未收到第一反馈信息，则该第一重传资源的时域资源开始于初次传输应收到第一反馈信息的时间，若第一终端设备重新发送第一信息仍未收到第一反馈信息，则该第一重传资源的时域资源开始于重新发送应收到第一反馈信息的时间。换句话说，只要一直没有收到第一反馈信息，则第一终端设备判断第一DRX激活态时段的剩余资源即第一重传资源是否大于或等于发送第一信息所需要的资源，若大于或等于发送第一信息所需要的资源，则重复发送第一信息，直到收到第一反馈信息，或者直到第一DRX激活态时段结束。
在一些实施例中，第一终端设备确定在第一DRX激活态时段结束仍未收到来自第二终端设备发送的第一反馈信息(例如，该确定的过程可以为：第一终端设备确定初次发送第一信息后未收到来自第二终端设备发送的第一反馈信息且第一重传资源小于发送第一信息所需要的资源，或第一终端设备初次发送第一信息后未收到来自第二终端设备发送的第一反馈信息且第一重传资源大于或等于发送第一信息所需要的资源，第一终端设备在第一重传资源上重复发送第一信息但直到第一重传资源用尽仍未收到第一反馈信息，使得第一终端设备在第一DRX激活态时段结束仍未收到第一反馈信息)，则第一终端设备判断第二重传资源(例如，第二重传资源在时域上为第一DRX激活态时段之后的位于数据包时延余量范围内的一个DRX激活态时段的部分或全部，也可以为第一DRX激活态时段之后的位于数据包时延余量范围内的几个DRX激活态时段的部分或全部)是否大于或等于发送第一信息所需要的资源。具体的，如图3所示，第二重传资源的时域资源位于第一DRX激活态时段之后的数据包时延余量范围内的DRX激活态时段。当第一终端设备判断第二重传资源大于或等于发送第一信息所需要的资源，换句话说，存在第二重传资源能够承载第一信息，则第一终端设备在第二重传资源上重复发送第一信息。
一些实施例中，第一终端设备确定在第一DRX激活态时段结束仍未收到来自第二终端设备发送的第一反馈信息(该确定的过程与上述实施例类似)且第一终端设备判断第二重传资源小于发送第一信息所需要的资源，则第一终端设备在第一资源上发送该第一信息。
需要说明的是，该第一重传资源和第二重传资源是第一终端设备根据感知结果等信息选出来的。
需要说明的是，第一资源是由第一控制信息指示的预约资源，该第一控制信息包含于第一信息，该第一资源的时域资源位于第二终端设备的第一DRX激活态时段之后的DRX休眠态时段，该第一资源的个数可以为一个、二个或三个。需要说明的是，该第一资源的时域资源位于第一DRX激活态时段后的DRX休眠态时段，理应收不到第一信息，但第一终端设备一直未收到来自第二终端设备发送的第一反馈信息，猜测第二终端设备处出现某种情况后第二终端设备会将第一资源对应的时域资源由休眠态转换为激活态，来接收重新发送的第一信息，该第二终设备处出现的某种情况将在下面的实施例进行详细说明。在第一资源上重新发送第一信息存在风险，即第二终端设备没有将第一资源对应的时域资源由休眠态转换为激活态，第一终端设备即使重新发送第一信息，第二终端设备也不能接收到。
需要说明的是，该第一信息包括第一控制信息和数据，在一种可能的实现方式中该第 一控制信息中包含预约第一资源的信息，还包括解调数据的信息，作为示例而非限定，该解调数据的信息中包括数据信息的目标终端设备的ID等信息，第二终端设备解调第一控制信息并解调目标终端设备的ID，发现自己是目标终端设备，在这种情况下，若第一终端设备和第二终端设备之间配置有反馈信道，则该第二终端设备会根据对数据接收情况向第一终端设备发送第一反馈信息，该第一反馈信息表示对第一信息的接收情况，更进一步的，该第一反馈信息表示目标终端设备对数据信息的接收情况，在本实施例中，目标终端设备为第二终端设备。换句话说，在第一终端设备和第二终端设备之间配置有反馈信道的前提下，第二终端设备成功解调第一控制信息中的目标终端设备ID，发现目标终端设备为自己，会根据对数据信息的接收情况，向第一终端设备发送第一反馈信息。
该第一终端设备未收到第一反馈信息的原因可能有以下几种：
1.该第二终端设备没有成功解调该第一信息包括的第一控制信息，具体的，没有解调成功第一控制信息中包括的目标终端设备ID，进一步的，该第二终端设备不能得知第一资源，也不能解调数据信息，因此，该第二终端设备不发送第一反馈信息。
2.该第二终端设备成功解调该第一信息包括的第一控制信息，进一步的，发送第一反馈信息，但因功率不足(第二设备需要同时反馈多个信息，其中第一反馈信息因为优先级低而且第二设备功率受限而未发送)，第一反馈信息没有发送。可选的，成功解调第一控制信息并确定目标终端设备的ID为自己，但未成功解调数据信息，该第一反馈信息可能为NACK；可选的，成功解调第一控制信息并确定目标终端设备的ID为自己，进一步的，成功解调数据信息，该第一反馈信息可能为ACK。
3.该第二终端设备成功解调该第一信息包括的第一控制信息，进一步的，发送第一反馈信息。可选的，成功解调第一控制信息，但未成功解调数据信息，该第一反馈信息可能为NACK；可选的，成功解调第一控制信息和数据信息，该第一反馈信息可以为ACK。但第一终端设备由于某种原因未接收到该第一反馈信息，作为示例而非限定，该导致第一终端设备未能接收到第一反馈信息的原因可以为信道质量差或被干扰等。
本申请实施例在第一终端设备判断发生DTX时，由于第一终端设备不知道第二终端设备的接收状况，因此尽可能在时延允许的范围内，在DRX激活态时段重新发送第一信息，增大第二终端设备收到第一信息的可能性。
如图4为本申请实施例通信方法的另一例的示意图，如图4所示，该方法400包括:
S410，第二终端设备接收来自第一终端设备的第一信息。
该第一信息包括第一控制信息，该第一控制信息用于预约第一资源，该第一资源的时域资源位于该第二终端设备的第一DRX激活态时段后的DRX休眠态时段，关于各时段的关系可参见关于图3的描述。
需要说明的是，该第一信息中还包括数据信息，该第一控制信息除了用于预约第一资源，还包括一些用于解调数据信息的信息。在本申请实施例中，称第二终端设备成功解调第一控制信息得知第一资源的预约情况且成功解调数据信息为接收第一信息成功；称第二终端设备成功解调第一控制信息得知第一资源的预约情况但未成功解调数据信息为接收第一信息失败。
S420，第二终端设备根据对第一信息的接收情况和/或第一反馈信息的优先级确定第一资源的时域资源状态。
在本申请实施例中，第一终端设备和第二终端设备在资源池上工作，资源池配置参数中有反馈信道参数，第二终端设备和第一终端设备和其他在该资源池内工作的终端设备根据资源池配置参数确定反馈信道的时域位置，该反馈信道的位置和传输数据的时域位置有对应关系，所以当第一终端设备向第二终端设备发送数据时，两者根据发送数据的时域位置确定反馈信道的位置，进而第二终端设备在上述对应的位置发送反馈信息，第一终端设备在对应位置上接收。
一些实施例中，第二终端设备未发送第一反馈信息，则第二终端设备将第一资源对应的时域资源由休眠态转换为激活态，该第二终端设备未发送第一反馈信息的原因可能是由于第一反馈信息的优先级不在反馈信道的发送序列中，第二终端设备由于功率不足未发送第一反馈信息，在这种情况下，第二终端设备确定第一终端设备会判断发生DTX，因此将第一资源对应的时域资源由休眠态切换为激活态，以接收第一终端设备重新发送的第一信息。可选的，第二终端设备接收第一信息成功，第一反馈信息可以为ACK，未发送第一反馈信息，将第一资源对应的时域资源由休眠态转换为激活态；可选的，第二终端设备接收第一信息失败，第一反馈信息可以为NACK，未发送第一反馈信息，将第一资源对应的时域资源由休眠态转换为激活态。
一些实施例中，第二终端设备接收第一信息成功，则第二终端设备在第一资源对应的时域资源保持休眠态，在这种情况下，协议定义该第一资源用于进行第一信息的重传，第二终端设备已经接收第一信息成功，则第二终端设备判断不需要在接收重新发送的第一信息，则第二终端设备在第一资源上保持休眠态。可选的，第二终端设备接收第一信息成功，未发送第一反馈信息，第二终端设备在第一资源上保持休眠态；可选的，第二终端设备接收第一信息成功，发送第一反馈信息，第一反馈信息可以为ACK，第二终端设备在第一资源上保持休眠态。
一些实施例中，第二终端设备在第一DRX激活态时段结束接收第一信息失败，则第二终端设备在第一资源对应的时域资源由休眠态转换为激活态，在这种情况下，不管第一资源是用于进行重传或其他数据的发送，则第二终端设备期望第一终端设备在第一资源上重新发送第一信息，因此第二终端设备将第一资源对应的时域资源由休眠态转换为激活态，期望在第一资源上接收重新发送的第一信息。可选的，第二终端设备在第一DRX激活态时段结束接收第一信息失败，未发送第一反馈信息，第二终端设备在第一资源对应的时域资源由休眠态转换为激活态；可选的，第二终端设备在第一DRX激活态时段结束接收第一信息失败，发送第一反馈信息，第一反馈信息可以为NACK，第二终端设备在第一资源对应的时域资源由休眠态转换为激活态。
一些实施例中，第二终端设备接收第一信息成功，则第二终端设备在第一资源对应的时域资源由休眠态转换为激活态，在这种情况下，协议定义或第一终端设备发送指示信息指示该第一资源可以用于其他数据的传输，则第二终端设备为了防止接收其他数据失败，在第一资源对应的时域资源由休眠态转换为激活态。可选的，第二终端设备接收第一信息成功，未发送第一反馈信息，第二终端设备在第一资源对应的时域资源由休眠态转换为激活态；可选的，第二终端设备接收第一信息成功，发送第一反馈信息，第一反馈信息可以为ACK，第二终端设备在第一资源对应的时域资源由休眠态转换为激活态。
需要说明的是，由于第一终端设备和第二终端设备之间发生DTX时，第一终端设备 和第二终端设备无法相互感知，故第二终端设备会根据例如协议预定义或自身的情况推测第一终端设备的行为，以保证最少的资源浪费和尽可能接收到重传信息。
S430，第二终端设备确定第一反馈信息的优先级，进一步的，发送第一反馈信息。
需要说明的是，步骤S420和步骤S430是不分先后的，且两者可以并行执行。作为示例而非限定，在步骤S420的一种实现中，在发送第一反馈信息之前，可以先确定第一反馈信息的优先级，但该第一反馈信息仍可能因为优先级不在反馈信道的发送序列中而未发送。
第二终端设备为了尽可能避免DTX情况的发生，会尽可能提高第一反馈信息在反馈信道的优先级，以使第一反馈信息能够尽可能发送出去，避免在一些场景下，第一反馈信息未发送对第二终端设备和第一终端设备的影响较大。
该第二终端设备主要根据第二信息确定第一反馈信息的优先级，该第二信息包括以下至少一种：第二终端设备的DRX激活态时段范围内重传资源预约情况，第二终端设备对所述第一信息的接收情况，第一资源的数量。
需要说明的是，第二终端设备根据第二信息确定将第一反馈信息的优先级提高到某个级别或确定第一反馈信息的优先级提高量。第一反馈信息需要被发送成功的需求越大，则越要提高第一反馈信息的优先级，以避免DTX的发生。
在一些实施例中，满足以下条件时，第二终端设备会提高第一反馈信息的优先级：
第一终端设备预约了DRX休眠态的第一资源。
需要说明的是，在该实施例中，不管第二终端设备根据对第一信息的接收情况确定第一反馈信息为NACK还是ACK，满足第一终端设备预约了DRX休眠态的第一资源，则第二终端设备提高第一反馈信息的优先级。
可选的，第二终端设备根据第一资源的个数确定第一反馈信息的优先级的提高量。
在一些实施例中，满足以下条件时，第二终端设备会提高第一反馈信息的优先级：
1.第一终端设备在第二终端设备的DRX激活态时段内没有预约重传资源；
2.第一终端设备在第二终端设备的DRX休眠态时段内预约了第一资源；
3.第二终端设备根据对第一信息的接收情况确定第一反馈信息为ACK。
可选的，第二终端设备根据第一资源的个数确定第一反馈信息的优先级的提高量。
在一些实施例中，满足以下条件时，第二终端设备会提高第一反馈信息的优先级:
1.第一终端设备在第二终端设备的DRX激活态时段内没有预约重传资源；
2.第一终端设备在第二终端设备的DRX休眠态时段内预约了第一资源；
3.第二终端设备根据对第一信息的接收情况确定第一反馈信息为NACK。
可选的，第二终端设备根据第一资源的个数确定第一反馈信息的优先级的提高量。
作为示例而非限定，上述可能的实现方式中，提高优先级的方法，具体为：第二终端设备确定需要发送的N个反馈信息，该N个反馈信息中优先级最低的反馈信息的优先级数值为K，则将第一反馈信息的优先级提高到高于或等于优先级数值为K的反馈信息的优先级，或，将第一反馈信息的优先级数值更新为小于或等于K的值，以使其提高后的优先级高于或等于优先级数值为K的反馈信息的优先级，从而保证第一反馈信息能够被发送。应理解，优先级数值越小，优先级等级越高，越容易被发送。
在本申请实施例中，第二终端设备和第一终端设备之间配置有反馈信道，一方面，第 二终端设备根据第二信息确定第一反馈信息的优先级，使第一反馈信息能够尽可能被发出，避免DTX的发生，另一方面，第二终端设备根据第一信息的接收情况，确定第一资源对应的时域资源状态，已尽能的在需要接收重新发送的第一信息时能够接收，且避免资源浪费。
需要说明的是，在SL空口传输***中，该提高反馈信息优先级的方法不仅仅限于避免DTX场景的发生。第二终端设备可以根据第三信息确定反馈信息的优先级，该第三信息包括但不限于以下至少任意一种：传输类型，终端资源选择类型，第一信息解调结果，DRX参数，第一资源的数量。终端设备根据第三信息确定将反馈信息的优先级提高到某个级别或确定反馈信息的优先级提高量。满足的第三信息的个数越多，或者，反馈信息需要被发送成功的需求越大，则越要提高反馈信息的优先级。
其中，传输类型可以为：组播、单播。终端资源选择类型可以为：全部感知、部分感知、随机选择。
需要说明的是，全部感知为在所有时隙上都感知，根据感知的结果选择资源；部分感知为在部分时隙上感知，以降低功耗，仅根据部分时隙上的感知结果选择资源；随机选择，则为不感知，随机选择资源。
结合前述各种实施例若传输类型为组播，且反馈组播的数据接收情况的反馈信息为NACK，则提高反馈信息的优先级。若终端设备为部分感知、随机选择等功耗受限的终端设备，则提高反馈信息的优先级。
如图5为本申请实施例通信方法的又一例的示意图，如图5所示，该方法500包括：
S510，第二终端设备接收来自第一终端设备的第一信息。
关于第一信息的接收情况可参见方法400中S410的相关描述。
S520，第二终端设备根据对第一信息的接收情况确定第一资源的时域资源状态。
在一些实施例中，第二终端设备与第一终端设备之间不存在反馈信道，或，第二终端设备与第一终端设备之间配置有反馈信道，但第一信息中携带了不使能反馈的指示，该指示包含于第一控制信息，第二终端设备只能根据自己对第一信息的接收情况及协议预定义，判断第一资源对应的时域资源的状态。作为示例而非限定，该不使能指示的参数可以为HARQ feedback enabled/disabled indicator，例如该参数可以为1bit。
在一些实施例中，第二终端设备接收第一信息成功，则第二终端设备在第一资源对应的时域资源保持休眠态。在这种情况下，协议定义该第一资源可以用于进行第一信息的重传，第二终端设备已经接收第一信息成功，则第二终端设备判断不需要在接收重新发送的第一信息，则第二终端设备在第一资源上保持休眠态。
在一些实施例中，第二终端设备在第一DRX激活态时段结束接收第一信息失败，则第二终端设备在第一资源对应的时域资源由休眠态转换为激活态，在这种情况下，不管第一资源是用于进行重传或其他数据的发送，第二终端设备期望第一终端设备在第一资源上重新发送第一信息，因此第二终端设备将第一资源对应的时域资源由休眠态转换为激活态，期望在第一资源上接收重新发送的第一信息。
在一些实施例中，第二终端设备接收第一信息成功，则第二终端设备在第一资源对应的时域资源由休眠态转换为激活态，在这种情况下，协议定义或第一终端设备发送指示信息指示该第一资源可以用于其他数据的传输，则第二终端设备为了防止接收其他数据失败， 在第一资源对应的时域资源由休眠态转换为激活态。
在一些实施例中，在第二终端设备和第一终端设备之间未配置反馈信道的情况下，第二终端设备通过对第一信息的接收情况设置第一资源的时域资源的状态，从而尽可能在接收第一信息失败的情况下接收第一终端设备重新发送的第一信息，并尽可能在接收第一信息成功的情况下避免因重复接收第一信息而带来的功耗损失。
在一些实施例中，当第一终端设备初次传输后，第一终端设备检测到DTX，在DRX激活态结束之间的资源上进行资源选择进行一次或多次重传，未考虑DRX机制对于预约资源的影响，所以会在原第二、第三次重传资源上传输，然而由于第二终端设备的是否在第二、第三次重传资源上启动重传时间进入激活状态未知，所以会出现问题。
可选的，在所述重传时携带原第二、第三次等重传的资源位置，即第一资源位置，以避免资源浪费，只有在新重传的反馈为NACK时，在原第二、第三次重传资源上传输；因为这时候，第一终端设备认为第二终端设备成功接收到控制信息并在预约的资源上转换为激活态。若新重传仍遇到DTX，且剩余DRX激活态时段不足以再进行资源选择进行重传，则不在原第二、第三次资源位置传输重传，即上述原第二、第三次资源位置为不可用资源(DRX休眠态时段)。
在第一次传输所在的在DRX激活态时段结束时，仍未收到NACK或ACK，即第一反馈信息，第一终端设备根据DRX激活态时段和数据包时延余量决定是否在预约的资源上进行重传。
可选的，一种场景，在数据包时延余量范围内，存在DRX激活态时段，则原预约的第二、第三次重传资源上不传输；
可选的，一种场景，在数据包时延余量范围内，存在DRX激活态时段且能筛选出可用资源(比如时隙个数、资源数量或RSRP等满足要求)，则原预约的第二、第三次重传资源上不传输；
可选的，一种场景，在数据包时延余量范围内不存在DRX激活态时段或者存在DRX激活态时段但是不满足要求(时隙个数不足、筛选不出足够的资源数量等)，则在原第二、第三次资源位置进行传输；此时，第一终端设备理解第二终端设备是在PSFCH功率不足的情况下导致PFSCH未传输。
在一些实施例中，在配置资源池时未配置PSFCH资源，即该资源池配置时参数”sl-HARQ-FeedbackEnabled”的取值对应”disabled”。在这种场景下，第一终端设备发送数据包之后，第二终端设备无论解调结果都不会反馈ACK/NACK的信息，因为资源池不存在PSFCH资源。对于这种场景，第一终端设备需要对于第一次传输预约的资源进行分类，如果首次传输预约的资源不是给当前第二终端设备使用的，则预约的资源所在的位置与当前第二终端设备的DRX激活态时段无关；如果首次传输预约的资源是针对当前第二终端设备的，无论是用于重传还是新传输一个数据块，都需要在当前第二终端设备的DRX激活态时段范围内；对于首次传输预约了多个资源，其中一部分是针对当前第二终端设备的，另一部分是针对其他终端设备的，针对当前Rx UE的预约资源需要在DRX激活态时段范围内，针对其他终端设备的预约资源无需考虑第二终端设备的DRX激活态时段。这种场景下，对于第二终端设备，由于没有PSFCH反馈信道，无论是否接收初传成功，都无法令第一终端设备获知，因此第二终端设备只在DRX激活态时段内接收第一终端设备 的传输，如果接收到第一终端设备的预约了DRX休眠态时段范围内的资源，一种实现方式，第二终端设备在上述预约的资源期间保持DRX休眠状态，另一种实现方式，当第二终端设备在DRX激活态时段结束前仍接收PSSCH失败时，第二终端设备在所述上述预约的资源期间保持DRX激活状态，当第二终端设备在DRX激活态时段结束前仍接收PSSCH成功时，第二终端设备在所述上述预约的资源期间保持DRX休眠状态，即根据DRX激活态时段内数据的接收是否成功确定预约在DRX休眠态时段范围内的资源上第二终端设备是否醒来。
在一些实施例中，第二终端设备通过提高PSFCH的优先级在一定程度上规避DTX的情况。
可选的，一种情况a，DRX激活态时段范围内无重传资源预约，预约了范围外的重传资源，且初传反馈为NACK时，提高其PSFCH的优先级一定级别或者提高其PSFCH优先级到某个级别，这种做法是优先保证NACK对应的数据成功传输；可选的，根据预约了DRX休眠态时段范围内的重传资源数量(1个或2个或3个)配置优先级的提高量，这种做法的逻辑是资源数量越多，造成的浪费越大，所以更应该提高优先级；
可选的，一种情况b，DRX激活态时段范围内无重传资源预约，预约了范围外的重传资源，且初传反馈为ACK时，提高其PSFCH的优先级一定级别或者提高其PSFCH优先级到某个级别；与上类似，根据预约了DRX休眠态范围内的重传资源数量(1个或2个或3个)配置优先级的提高量。
可选的，一种情况c，预约了DRX激活态范围外的重传资源，且初传反馈为NACK/ACK时，提高其PSFCH的优先级一定级别或者提高其PSFCH优先级到某个级别。
在本申请实施例中，能做到尽可能避免DTX造成DRX激活态时间理解不一致的问题，当不能完全规避时，通过调整优先级的提高量或者提高到优先级，尽可能减少DTX导致的激活态不一致的时长。
图6为本申请实施例的通信装置600示意图，该通信装置600中的各个单元可以通过软件来实现，该通信装置600包括：收发单元610和处理单元620。
在一些实施例中，该通信装置600可以是上文方法实施例中的第一终端设备，也可以是用于实现上文方法实施例中第一终端设备的功能的芯片。应理解，该通信装置600可对应于根据本申请实施例的方法200、方法400、方法500中的第一终端设备，该通信装置600可以执行本申请实施例的方法200、方法400、方法500中的第一终端设备所对应的步骤。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
在一些实施例中，该通信装置600可以是上文方法实施例中的第二终端设备，也可以是用于实现上文方法实施例中第二终端设备的功能的芯片。应理解，该通信装置600可对应于根据本申请实施例的方法200、方法400、方法500中的第二终端设备，该通信装置600可以执行本申请实施例的方法200、方法400、方法500中的第二终端设备所对应的步骤。应理解，各单元执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。图7为本申请实施例的通信装置700示意图，该通信装置700包括：收发器710和处理器720。
具体的，该通信装置700中的收发器710可以对应于通信装置600中的收发单元610， 该通信装置700中的处理器720可对应于通信装置600中的处理单元620。
应理解，各收发器处理器执行上述相应步骤的具体过程在上述方法实施例中已经详细说明，为了简洁，在此不再赘述。
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。
在本申请所提供的几个实施例中，应该理解到，所揭露的***、装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个***，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
所述功能如果以软件功能单元的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。基于这样的理解，本申请的技术方案可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质中，包括若干指令用以使得一台计算机设备(可以是个人计算机，服务器，或者网络设备等)执行本申请各个实施例所述方法的全部或部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。

Claims (31)

  1. 一种通信方法，其特征在于，包括：
    第一终端设备确定发送第一信息后未接收到来自第二终端设备的第一反馈信息，所述第一信息在所述第二终端设备的第一不连续接收DRX激活态时段内被发送，所述第一反馈信息用于指示所述第二终端设备对所述第一信息的接收情况；
    所述第一终端设备向所述第二终端设备重新发送所述第一信息。
  2. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备获取所述第二终端设备的DRX参数；
    所述第一终端设备根据所述DRX参数确定所述第二终端设备的DRX激活态时段；
    所述第一终端设备在所述DRX激活态时段包括的所述第一DRX激活态时段内向所述第二终端设备发送所述第一信息。
  3. 根据权利要求1或2所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备确定第一重传资源大于或等于传输第一信息所需的资源，所述第一重传资源的时域资源开始于应收到所述第一反馈信息的时间，结束于所述第一DRX激活态时段的结束时间；
    所述第一终端设备向所述第二终端设备重新发送所述第一信息包括：
    所述第一终端设备在所述第一重传资源上向所述第二终端设备重新发送所述第一信息。
  4. 根据权利要求1或2所述的方法，其特征在于，所述第一信息包括第一控制信息，所述第一控制信息用于预约第一资源，所述第一资源的时域资源位于所述第一DRX激活态时段后的DRX休眠态时段，所述DRX休眠态时段由所述DRX参数确定。
  5. 根据权利要求4所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备确定在所述第一DRX激活态时段结束未收到所述第一反馈信息；
    所述第一终端设备确定第二重传资源大于或等于传输所述第一信息所需的资源，所述第二重传资源的时域资源为所述第一DRX激活态时段后的位于数据包时延余量范围内的所述DRX激活态时段；
    所述第一终端设备向所述第二终端设备重新发送所述第一信息包括：
    所述第一终端设备在所述第二重传资源上向所述第二终端设备重新发送所述第一信息。
  6. 根据权利要求4所述的方法，其特征在于，所述方法还包括：
    所述第一终端设备确定在所述第一DRX激活态时段结束未收到所述第一反馈信息；
    所述第一终端设备确定第二重传资源小于传输所述第一信息所需的资源，所述第二重传资源的时域资源为所述第一DRX激活态时段后的位于数据包时延余量范围内的所述DRX激活态时段；
    所述第一终端设备向所述第二终端设备重新发送所述第一信息包括：
    所述第一终端设备在所述第一资源上向所述第二终端设备重新发送所述第一信息。
  7. 根据权利要求1-6任一项所述的方法，所述第一终端设备确定在所述第一DRX激 活态时段结束未收到所述第一反馈信息，具体包括：
    所述第一重传资源小于传输所述第一信息所需的资源，或，
    所述第一终端设备确定在所述第一重传资源上向所述第二终端设备重新发送所述第一信息后未收到所述第一反馈信息。
  8. 一种通信方法，其特征在于，包括：
    第二终端设备在第一不连续接收DRX激活态时段内接收来自第一终端设备的第一信息，所述第一信息包括第一控制信息，所述第一控制信息用于预约第一资源，所述第一资源的时域资源位于所述第一DRX激活态时段后的DRX休眠态时段；
    所述第二终端设备根据对所述第一信息的接收情况和/或第一反馈信息的优先级确定所述第一资源的时域资源状态，所述第一反馈信息用于指示所述第二终端设备对所述第一信息的接收情况。
  9. 根据权利要求8所述的方法，其特征在于，所述第二终端设备根据对所述第一信息的接收情况和/或第一反馈信息的优先级确定所述第一资源的时域资源状态，具体包括：
    所述第二终端设备确定未发送所述第一反馈信息，在所述第一资源的时域资源转换为激活态，或，
    所述第二终端设备确定接收所述第一信息成功，在所述第一资源的时域资源保持休眠态，或，
    所述第二终端设备确定在所述第一DRX激活态时段结束接收所述第一信息失败，在所述第一资源的时域资源转换为激活态，或，
    所述第二终端设备确定接收所述第一信息成功，在所述第一资源的时域资源转换为激活态。
  10. 根据权利要求8或9所述的方法，其特征在于，所述方法还包括：
    所述第二终端设备根据第二信息确定所述第一反馈信息的优先级，所述第二信息包括以下至少任意一项：
    所述DRX激活态时段范围内重传资源预约情况，
    所述第二终端设备对所述第一信息的接收情况，
    所述第一资源的数量；
    所述第二终端设备向所述第一终端设备发送所述第一反馈信息。
  11. 根据权利要求8-10任一项所述的方法，其特征在于，所述第二终端设备和所述第一终端设备之间配置有反馈信道，或，所述第二终端设备和所述第一终端设备之间配置有反馈信道且所述反馈信道使能。
  12. 一种通信方法，其特征在于，包括：
    第二终端设备在第一不连续接收DRX激活态时段内接收来自第一终端设备的第一信息，所述第一信息包括第一控制信息，所述第一控制信息用于预约第一资源，所述第一资源的时域资源位于所述第一DRX激活态时段后的DRX休眠态时段；
    所述第二终端设备根据对所述第一信息的接收情况确定所述第一资源的时域资源的状态。
  13. 根据权利要求12所述的方法，其特征在于，所述第二终端设备根据对所述第一信息的接收情况确定所述第一资源的时域资源对应的状态，具体包括：
    所述第二终端设备确定接收所述第一信息成功，在所述第一资源的时域资源保持休眠态，或，
    所述第二终端设备确定在所述第一时段结束接收所述第一信息失败，在所述第一资源的时域资源转换为激活态，或，
    所述第二终端设备确定接收所述第一信息成功，在所述第一资源的时域资源转换为激活态。
  14. 根据权利要求12或13所述的方法，其特征在于，所述第二终端设备和所述第一终端设备之间未配置反馈信道，或，所述第二终端设备和所述第一终端设备之间配置有反馈信道且所述反馈信道未使能。
  15. 一种通信装置，其特征在于，包括：
    处理器，用于确定发送第一信息后未接收到来自第二终端设备的第一反馈信息，所述第一信息在所述第二终端设备的第一不连续接收DRX激活态时段内被发送，所述第一反馈信息用于指示所述第二终端设备对所述第一信息的接收情况；
    收发器，用于向所述第二终端设备重新发送所述第一信息。
  16. 根据权利要求15所述的装置，其特征在于，
    所述处理器还用于获取所述第二终端设备的DRX参数；
    根据所述DRX参数确定所述第二终端设备的DRX激活态时段；
    所述收发器还用于在所述DRX激活态时段包括的所述第一DRX激活态时段内向所述第二终端设备发送所述第一信息。
  17. 根据权利要求15或16所述的装置，其特征在于，
    所述处理器还用于确定第一重传资源大于或等于传输所述第一信息所需的资源，所述第一重传资源的时域资源开始于应收到所述第一反馈信息的时间，结束于所述第一DRX激活态时段的结束时间；
    所述收发器用于向所述第二终端设备重新发送所述第一信息包括：
    所述收发器用于在所述第一重传资源上向所述第二终端设备重新发送所述第一信息。
  18. 根据权利要求15或16所述的装置，其特征在于，所述第一信息包括第一控制信息，所述第一控制信息用于预约第一资源，所述第一资源的时域资源位于所述第一DRX激活态时段后的DRX休眠态时段，所述DRX休眠态时段由所述DRX参数确定。
  19. 根据权利要求18所述的装置，其特征在于，所述处理器还用于：
    确定在所述第一DRX激活态时段结束未收到所述第一反馈信息；
    确定第二重传资源大于或等于传输所述第一信息所需的资源，所述第二重传资源的时域资源为所述第一DRX激活态时段后的位于数据包时延余量范围内的所述DRX激活态时段；
    所述收发器用于向所述第二终端设备重新发送所述第一信息包括：
    所述收发器用于在所述第二重传资源上向所述第二终端设备重新发送所述第一信息。
  20. 根据权利要求18所述的装置，其特征在于，所述处理器还用于：
    确定在所述第一DRX激活态时段结束未收到所述第一反馈信息；
    确定第二重传资源小于传输所述第一信息所需的资源，所述第二重传资源的时域资源为所述第一DRX激活态时段后的位于数据包时延余量范围内的所述DRX激活态时段；
    所述收发器用于向所述第二终端设备重新发送所述第一信息包括：
    所述收发器用于在所述第一资源上向所述第二终端设备重新发送所述第一信息。
  21. 根据权利要求15-20任一项所述的装置，所述处理器确定在所述第一DRX激活态时段结束未收到所述第一反馈信息，具体包括：
    所述处理器确定第一重传资源小于传输所述第一信息所需的资源，或，
    所述处理器确定在所述第一重传资源上向所述第二终端设备重新发送所述第一信息后未收到所述第一反馈信息。
  22. 一种通信装置，其特征在于，包括：
    收发器，用于在第一不连续接收DRX激活态时段内接收来自第一终端设备的第一信息，所述第一信息包括第一控制信息，所述第一控制信息用于预约第一资源，所述第一资源的时域资源位于所述第一DRX激活态时段后的DRX休眠态时段；
    处理器，用于根据对所述第一信息的接收情况和/或第一反馈信息的优先级确定所述第一资源的时域资源状态，所述第一反馈信息用于指示所述第一信息的接收情况。
  23. 根据权利要求22所述的装置，其特征在于，所述处理器根据对所述第一信息的接收情况或第一反馈信息的优先级确定所述第一资源的时域资源状态，具体包括：
    所述处理器确定未发送所述第一反馈信息，在所述第一资源的时域资源转换为激活态，或，
    所述处理器确定接收所述第一信息成功，在所述第一资源的时域资源保持休眠态，或，
    所述处理器确定在所述第一DRX激活态时段结束接收所述第一信息失败，在所述第一资源的时域资源转换为激活态，或，
    所述处理器确定接收所述第一信息成功，在所述第一资源的时域资源转换为激活态。
  24. 根据权利要求22或23所述的装置，其特征在于，所述处理器还用于：
    根据第二信息确定所述第一反馈信息的优先级，所述第二信息包括以下至少任意一项：
    所述DRX激活态时段范围内重传资源预约情况，
    所述第二终端设备对所述第一信息的接收情况，
    所述第一资源的数量；
    所述第二终端设备向所述第一终端设备发送所述第一反馈信息。
  25. 根据权利要求22-24任一项所述的装置，其特征在于，所述收发器和所述第一终端设备之间配置有反馈信道，或，所述收发器和所述第一终端设备之间配置有反馈信道且所述反馈信道使能。
  26. 一种通信装置，其特征在于，包括：
    收发器，用于在第一不连续接收DRX时段内接收来自第一终端设备的第一信息，所述第一信息包括第一控制信息，所述第一控制信息用于预约第一资源，所述第一资源的时域资源位于所述第一DRX激活态时段后的所述DRX休眠态时段；
    处理器，用于根据对所述第一信息的接收情况确定所述第一资源的时域资源的状态。
  27. 根据权利要求26所述的装置，其特征在于，所述处理器根据对所述第一信息的接收情况确定所述第一资源的时域资源对应的状态，具体包括：
    所述处理器确定接收所述第一信息成功，在所述第一资源的时域资源保持休眠态，或，
    所述处理器确定在所述第一时段结束接收所述第一信息失败，在所述第一资源的时域 资源转换为激活态，或，
    所述处理器确定接收所述第一信息成功，在所述第一资源的时域资源转换为激活态。
  28. 根据权利要求26或27所述的装置，其特征在于，所述收发器和所述第一终端设备之间未配置反馈信道，或，所述收发器和所述第一终端设备之间配置有反馈信道且所述反馈信道未使能。
  29. 一种计算机可读存储介质，其特征在于，包括指令，当所述指令在第一终端设备上运行时，使得所述第一终端设备执行如权利要求1至7中任一项所述的方法。
  30. 一种计算机可读存储介质，其特征在于，包括指令，当所述指令在第二终端设备上运行时，使得所述第二终端设备执行如权利要求8至11中任一项所述的方法。
  31. 一种计算机可读存储介质，其特征在于，包括指令，当所述指令在第二终端设备上运行时，使得所述第二终端设备执行如权利要求12至14中任一项所述的方法。
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