WO2022077519A1 - 一种信息传输方法及装置 - Google Patents

一种信息传输方法及装置 Download PDF

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Publication number
WO2022077519A1
WO2022077519A1 PCT/CN2020/121704 CN2020121704W WO2022077519A1 WO 2022077519 A1 WO2022077519 A1 WO 2022077519A1 CN 2020121704 W CN2020121704 W CN 2020121704W WO 2022077519 A1 WO2022077519 A1 WO 2022077519A1
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Prior art keywords
terminal
resource
time
sci
energy
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PCT/CN2020/121704
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English (en)
French (fr)
Inventor
黄海宁
黎超
张天虹
米翔
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华为技术有限公司
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Priority to PCT/CN2020/121704 priority Critical patent/WO2022077519A1/zh
Publication of WO2022077519A1 publication Critical patent/WO2022077519A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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 technologies, and in particular, to an information transmission method and apparatus.
  • the 5th Generation Mobile Communication Technology 5G
  • 5G the 5th Generation Mobile Communication Technology
  • NR New Radio
  • the communication between user equipments User Equipment, UE
  • sidelink sidelink
  • UE may include terminal equipment, smart phone, vehicle terminal in vehicle wireless communication system, Electronic equipment such as roadside units, among which, the vehicle wireless communication system can be called vehicle to X, or V2X for short.
  • the resource allocation scheme of the sidelink of NR includes Mode 1 and Mode 2. Among them, Mode 1 is resource scheduling by the base station, and Mode 2 is resource selection by the UE autonomously.
  • the UE can determine which resources are not occupied by other UEs through sensing (Sensing process) in a configured resource pool, and then Select some suitable resources for SL transmission; after resource selection, the UE will send or retransmit data on these resources until resource reselection is triggered.
  • DRX discontinuous Reception
  • the UE is configured with a discontinuous reception (Discontinuous Reception, DRX) mode, that is, the UE is in the active state for part of the time period (ON duration) and part of the time period (OFF duration) in a DRX cycle. is inactive.
  • DRX discontinuous Reception
  • PSCCH Physical Sidelink Control Channel
  • SCI Sidelink Control information
  • Embodiments of the present application provide an information transmission method and apparatus, which are used to resolve resource selection conflicts among multiple user equipments in a DRX mode, improve the reliability of SL resource selection, and thereby improve sidelink communication quality.
  • an information transmission method applied to a first terminal, the method includes: receiving sidelink control information SCI, where the SCI includes energy saving indication information of the second terminal and first time-frequency resource information; The SCI determines time-frequency resources for sideline transmission.
  • the energy-saving indication information for indicating that the terminal is in the DRX mode or the energy-saving mode in the SCI by carrying the energy-saving indication information for indicating that the terminal is in the DRX mode or the energy-saving mode in the SCI, other terminals can determine resources according to the energy-saving indication information in the process of resource selection, so as to reduce preemption.
  • the probability of reserving resources of a terminal in an energy saving mode or a DRX mode or an energy saving level in a preset range improves the reliability of SL resource selection, thereby improving the communication quality of the sidelink.
  • the power saving indication information is used to indicate that the second terminal is in at least one of the power saving mode, the non-power saving mode, the DRX mode of discontinuous reception, the non-DRX mode, or the power saving level of the second terminal, wherein , and the energy saving level is used to indicate the energy saving degree of the second terminal.
  • the energy-saving indication information may be used to indicate the energy-saving state or energy-saving level of the second terminal, so that other terminals can selectively select resources according to the energy-saving indication information, so as to ensure the reliability of resource selection. , reduce the conflict of resource selection.
  • the energy saving level has a corresponding relationship with the ratio of the active time or inactive time in the DRX cycle configured by the second terminal to the DRX cycle, or, the energy saving level and the DRX cycle length configured by the second terminal There is a corresponding relationship.
  • different energy saving levels may be divided according to the ratio of the active time or inactive time in the DRX cycle configured by the second terminal to the DRX cycle, or the length of the DRX cycle, so as to improve the judgment of resource selection. flexibility.
  • determining the time-frequency resource used for sideline transmission according to the SCI specifically includes: the energy-saving indication information satisfies the first resource exclusion condition, and is a candidate resource that will overlap with the first time-frequency resource A condition to exclude from the candidate resource set.
  • the first resource exclusion condition includes: the energy saving indication information indicates that the second terminal is in the energy saving mode, or the second terminal is in the DRX mode, or the energy saving level of the second terminal meets a preset range.
  • the first terminal may selectively select resources according to the energy-saving indication information of the second terminal, so as to ensure the reliability of resource selection of the energy-saving terminal as much as possible and reduce the conflict of resource selection.
  • the first resource exclusion condition further includes: the priority value included in the SCI is less than or equal to the first threshold, or the priority value included in the SCI is less than or equal to the second Threshold and the SCI contains a priority value greater than or equal to the third threshold.
  • the first terminal does not preempt resources from the second terminal with a higher data priority, so as to satisfy the reliability of data transmission by the second terminal. Therefore, the terminal can determine whether to exclude candidate resources that overlap with the reserved resources of the energy-saving terminal according to the priority of the data sent by the terminal with energy-saving demand, which ensures the reliability and transmission quality of the high-priority service transmitted by the energy-saving terminal, and reduces the The number of retransmissions of its data transmission improves the data transmission performance of the communication system.
  • determining the time-frequency resources used for sideline transmission according to the SCI further includes: satisfying the second resource exclusion condition, in order to remove candidate resources that overlap with the first time-frequency resources from the candidate resource set an excluded condition.
  • the second resource exclusion condition specifically includes: the RSRP measurement value of the reference signal received power is greater than or equal to the first RSRP threshold.
  • the second resource exclusion condition includes: the RSRP measurement value is greater than or is equal to the second RSRP threshold; if the energy saving indication information indicates that the second terminal is in a non-power-saving mode or the second terminal is in a non-DRX mode, the second resource exclusion condition includes: the RSRP measurement value is greater than or equal to the third RSRP threshold.
  • the probability of candidate resources corresponding to UEs with energy-saving needs being preempted is reduced, and the resource utilization of energy-saving UEs is effectively guaranteed.
  • Low interference avoiding UE resources in energy-saving mode being robbed and not knowing, thus ensuring the reliability and quality of service of data transmission of energy-saving UEs, reducing the number of retransmissions of its data transmission, and improving the operation efficiency of the communication system.
  • the energy saving indication information includes the energy saving level of the second terminal
  • the second resource exclusion condition includes: the RSRP measurement value is greater than or equal to the RSRP threshold corresponding to the energy saving level of the second terminal.
  • the energy-saving indication information is carried in at least one bit of the first-level SCI, or the energy-saving indication information is carried in at least one bit of the second-level SCI.
  • the energy-saving indication information can be carried in the first-level SCI or the second-level SCI, so as to instruct other terminals to avoid resource selection conflicts as much as possible during the resource selection process, and the indication method is flexible and improves the reliability of sideline transmission. .
  • the first-level SCI or the second-level SCI is scrambled by the wireless network temporary identifier RNTI, and the RNTI is associated with the energy-saving indication information, or the first format of the second-level SCI is used to indicate the energy-saving mode or DRX mode, the second format of the second-level SCI is used to indicate a non-power saving mode or a non-DRX mode.
  • the flexibility of the indication manner of the energy saving indication information is improved, thereby instructing other terminals to avoid resource selection conflicts as much as possible during the resource selection process, the indication manner is flexible, and the reliability of sideline transmission is improved.
  • an information transmission method applied to a second terminal, the method further includes: sending sidelink control information SCI, where the SCI includes energy saving indication information and first time-frequency resource information, wherein the energy saving indication information uses It indicates that the second terminal is in an energy-saving state or a non-energy-saving state.
  • the power saving indication information is used to indicate that the second terminal is in at least one of the power saving mode, the non-power saving mode, the DRX mode of discontinuous reception, the non-DRX mode, or the power saving level of the second terminal, wherein , and the energy saving level is used to indicate the energy saving degree of the second terminal.
  • the energy saving level has a corresponding relationship with the ratio of the active time or inactive time in the DRX cycle configured by the second terminal to the DRX cycle, or, the energy saving level and the DRX cycle length configured by the second terminal There is a corresponding relationship.
  • the energy-saving indication information is carried in at least one bit of the first-level SCI, or the energy-saving indication information is carried in at least one bit of the second-level SCI.
  • the first-level SCI or the second-level SCI is scrambled by the wireless network temporary identifier RNTI, and the RNTI is associated with the energy-saving indication information, or the first format of the second-level SCI is used to indicate the energy-saving mode or DRX mode, the second format of the second-level SCI is used to indicate a non-power saving mode or a non-DRX mode.
  • an information transmission method applied to a first terminal, the method includes: receiving configuration information, where the configuration information is used to indicate that the resource selection mode of the first terminal is sensing or partial sensing; Occupied or needs to be re-evaluated, wherein the first terminal is in discontinuous reception DRX mode, power saving mode, non-DRX mode or non-power saving mode.
  • the method further includes: the first terminal determines to enable resource preemption or resource re-evaluation according to RRC signaling.
  • the method further includes: the first terminal prioritizes data corresponding to the received sidelink control information SCI according to If the level satisfies the preset conditions, it is determined to enable resource preemption or resource re-evaluation.
  • the method further includes: the first terminal determines to enable according to the measured channel busy ratio CBR meeting a preset condition Resource preemption or resource re-evaluation.
  • the terminal may ensure the energy saving effect by determining whether resource preemption or resource re-evaluation is really enabled. Specifically, in the case of high priority of transmission data, resource preemption or resource re-evaluation can be enabled to ensure the reliability and transmission quality of data transmission with higher priority, and improve the data transmission performance of the communication system. In addition, according to the CBR measurement value to determine whether resource preemption or resource re-evaluation is really enabled, it can be comprehensively judged that when the current channel congestion is serious, the probability of resource preemption is high. At this time, ensuring the energy saving effect will lead to the transmission reliability cannot be guaranteed. , which in turn leads to frequent data retransmission, which is not conducive to the data transmission of the communication system. Therefore, the terminal can sacrifice the energy saving effect and enable resource preemption to prioritize the reliability of data transmission and the quality of service, thereby reducing the number of retransmissions.
  • the first period of time before the triggering moment of resource preemption or resource re-evaluation of the first terminal is the activation time.
  • whether the terminal is in the energy-saving mode or the DRX mode will not affect its resource preemption check or resource re-evaluation, so as to ensure that the preemption check process of the terminal in the energy-saving mode can be performed normally, so that the resource preempted terminal can be performed normally.
  • the resources can be reselected to obtain time-frequency resources with lower interference, which increases the reliability and transmission quality of data transmission, reduces the number of retransmissions, and improves the data transmission efficiency of the communication system.
  • the first time period is the activation time of the first terminal, including: after the first terminal transmits the sidelink data information or the first sidelink control information SCI, the first terminal starts the first timing
  • the duration of the first timer is the first time period.
  • a timer is introduced to manage the process of resource preemption, so that terminals with energy-saving needs can perform resource preemption checks, so as to improve the data transmission reliability and transmission quality of energy-saving terminals, and reduce the number of retransmissions.
  • the data transmission efficiency of the communication system is improved.
  • the start time of the first period is the next symbol of the end symbol of the first SCI sent by the first terminal
  • the end time of the first period is N time slots before the next reserved time-frequency resource
  • the previous symbol of , or, or the end time of the first period is the previous symbol of the start symbol of the next reserved time-frequency resource, where N is determined according to the subcarrier interval.
  • the first time period is the activation time of the first terminal, and further includes: if the priority value included in the first SCI sent by the first terminal is lower than the first threshold, and/or the measured channel If the busy ratio CBR is greater than or equal to the second threshold, the first terminal determines that the first period is the activation time.
  • the terminal in the DRX mode can combine the data priority and the CBR measurement value to determine whether to activate the resource preemption check or resource impact assessment, that is, to ensure the resource preemption check or resource impact assessment under certain conditions. , the energy-saving requirements of the terminal can be ignored, thereby improving the reliability and quality of data transmission.
  • the method before determining that the second time-frequency resource is occupied or needs to be re-evaluated, the method further includes: determining that the second time-frequency resource does not belong to the first resource set, and the second time-frequency resource corresponding to the second time-frequency resource The priority value included in the SCI satisfies the first preemption condition, and the first terminal releases the second time-frequency resource, where the first resource set is the time-frequency resource set determined by the first terminal, and the second time-frequency resource is the first terminal's time-frequency resource.
  • Reserve resources before determining that the second time-frequency resource is occupied or needs to be re-evaluated.
  • the first preemption condition when the first terminal is in a non-power-saving mode or a non-DRX mode, the first preemption condition includes: the priority value included in the second SCI is less than or equal to the third threshold, and the second SCI includes The priority value of is less than or equal to the priority value contained in the first SCI.
  • the first preemption condition when the first terminal is in the power saving mode or the DRX mode, the first preemption condition includes: the priority value included in the second SCI is less than or equal to the fourth threshold, and the priority value included in the second SCI The priority value is less than or equal to the priority value contained in the first SCI.
  • a specific preemption threshold is configured for a terminal that has an energy-saving requirement, so as to reduce the probability of preemption check of the energy-saving terminal, thereby ensuring energy-saving efficiency.
  • different preemption thresholds are set to ensure that terminals with higher energy-saving effect requirements have lower probability of preemption check, which can ensure the energy-saving effect and ensure the reliability of data transmission with higher priority. sex.
  • the third threshold is smaller than the fourth threshold.
  • the corresponding preemption threshold is lowered to ensure that the transmission data with higher priority can be preempted, to ensure the reliability and transmission quality of data transmission, and to reduce the number of retransmissions. Improve the data transmission efficiency of the communication system.
  • the method further includes: satisfying the second preemption condition, the first terminal determines that the second time-frequency resource does not belong to the first resource set, and releases the second time-frequency resource. Two time-frequency resources.
  • the second preemption condition when the first terminal is in the non-power-saving mode or the non-DRX mode, the second preemption condition is: the RSRP measurement value is greater than or equal to the fifth threshold; when the first terminal is in the power-saving mode or the DRX mode , the second preemption condition is: the RSRP measurement value is greater than or equal to the sixth threshold.
  • the priority included in the second SCI satisfying the first preemption condition includes: the priority value included in the second SCI is less than or equal to the third threshold, And, the priority value included in the second SCI is less than or equal to the priority value included in the first SCI.
  • the third threshold has a corresponding relationship with the ratio of the active time or inactive time in the DRX cycle of the first terminal to the DRX cycle, or has a corresponding relationship with the length of the DRX cycle of the first terminal .
  • different priority preemption thresholds are configured for terminals with different energy saving requirements, thereby improving the flexibility of resource preemption and improving the data transmission performance of the communication system.
  • the method further includes: the first terminal performs resource selection, and determines time-frequency resources for sidelink transmission from the candidate resource set, where the second resource exclusion condition is satisfied, and the first terminal is the first terminal.
  • a fourth aspect provides a communication device, the communication device includes a receiving module and a processing module, wherein the receiving module is configured to receive sidelink control information SCI, where the SCI includes energy saving indication information of the second terminal and a first time frequency resource information; the processing module is configured to determine the time-frequency resource for sideline transmission according to the SCI.
  • the receiving module is configured to receive sidelink control information SCI, where the SCI includes energy saving indication information of the second terminal and a first time frequency resource information
  • the processing module is configured to determine the time-frequency resource for sideline transmission according to the SCI.
  • the power saving indication information is used to indicate that the second terminal is in at least one of the power saving mode, the non-power saving mode, the DRX mode of discontinuous reception, the non-DRX mode, or the power saving level of the second terminal One, wherein the energy saving level is used to indicate the energy saving degree of the second terminal.
  • the energy saving level has a corresponding relationship with the proportion of the active time or inactive time in the DRX cycle configured by the second terminal, or the energy saving level is related to the The DRX cycle length configured by the second terminal has a corresponding relationship.
  • the processing module is specifically configured to: the energy saving indication information satisfies the first resource exclusion condition, which is one of the candidate resources that overlap with the first time-frequency resource is excluded from the candidate resource set condition.
  • the first resource exclusion condition includes: the power saving indication information indicates that the second terminal is in a power saving mode, or the second terminal is in a DRX mode, or the power saving level of the second terminal meet the preset range.
  • the first resource exclusion condition further includes: the priority value included in the SCI is less than or equal to the first threshold, or the priority value included in the SCI is less than or equal to the second threshold and all The priority value contained in the SCI is greater than or equal to the third threshold.
  • the processing module is further configured to: determine that satisfying the second resource exclusion condition is a condition for excluding candidate resources that overlap with the first time-frequency resource from the candidate resource set.
  • the second resource exclusion condition specifically includes: the RSRP measurement value of the reference signal received power is greater than or equal to the first RSRP threshold.
  • the second resource is excluded
  • the conditions include: the RSRP measurement value is greater than or equal to the second RSRP threshold; if the energy saving indication information is that the second terminal is in a non-energy-saving mode, or the second terminal is in a non-DRX mode, the second resource
  • the exclusion condition includes: the RSRP measurement value is greater than or equal to the third RSRP threshold.
  • the energy-saving indication information is carried in at least one bit of the first-level SCI, or the energy-saving indication information is carried in at least one bit of the second-level SCI.
  • the first-level SCI or the second-level SCI is scrambled by a wireless network temporary identifier RNTI, and the RNTI is associated with the energy saving indication information, or the first-level SCI of the second-level SCI is scrambled.
  • the format is used to indicate the power saving mode or the DRX mode
  • the second format of the second level SCI is used to indicate the non-power saving mode or the non-DRX mode.
  • a communication device in a fifth aspect, includes a sending module configured to send sidelink control information SCI, the SCI includes energy saving indication information and first time-frequency resource information, wherein the energy saving indication The information is used to indicate that the second terminal is in an energy-saving state or a non-energy-saving state.
  • the power saving indication information is used to indicate that the second terminal is in at least one of the power saving mode, the non-power saving mode, the DRX mode of discontinuous reception, the non-DRX mode, or the power saving level of the second terminal One, wherein the energy saving level is used to indicate the energy saving degree of the second terminal.
  • the energy saving level has a corresponding relationship with the proportion of the active time or inactive time in the DRX cycle configured by the second terminal, or the energy saving level is related to the The DRX cycle length configured by the second terminal has a corresponding relationship.
  • the energy-saving indication information is carried in at least one bit of the first-level SCI, or the energy-saving indication information is carried in at least one bit of the second-level SCI.
  • a communication device in a sixth aspect, includes a receiving module and a processing module, the receiving module is configured to receive configuration information, and the configuration information is used to indicate that the resource selection mode of the first terminal is sensing or Partial perception; the processing module is configured to determine that the second time-frequency resource is occupied or needs to be re-evaluated, wherein the first terminal is in discontinuous reception DRX mode, energy saving mode, non-DRX mode or non-energy saving mode.
  • the first period of time before the triggering moment of resource preemption or resource re-evaluation of the first terminal is the activation time.
  • the first time period is the activation time of the first terminal, including: after the first terminal transmits sideline data information or first sidelink control information SCI, the first A terminal starts a first timer, and the duration of the first timer is the first time period.
  • the start time of the first period is the next symbol of the end symbol of the first SCI sent by the first terminal, and the end time of the first period is before the next reserved time-frequency resource
  • the previous symbol of the N time slots, or, or the end time of the first period is the previous symbol of the start symbol of the next reserved time-frequency resource, where N is determined according to the subcarrier spacing.
  • the first time period is the activation time of the first terminal, further comprising: if the priority value included in the first SCI sent by the first terminal is lower than the first threshold, and/or If the measured channel busy ratio CBR is greater than or equal to the second threshold, the first terminal determines that the first period is the activation time.
  • the processing module is further configured to determine that the second time-frequency resource does not belong to the first resource set, and the priority value included in the second SCI corresponding to the second time-frequency resource satisfies the first preemption condition, the first terminal releases the second time-frequency resource, where the first resource set is the time-frequency resource set determined by the first terminal, and the second time-frequency resource is the first time-frequency resource set.
  • the reserved resources of a terminal is further configured to determine that the second time-frequency resource does not belong to the first resource set, and the priority value included in the second SCI corresponding to the second time-frequency resource satisfies the first preemption condition.
  • the first preemption condition when the first terminal is in a non-power-saving mode or a non-DRX mode, the first preemption condition includes: a priority value included in the second SCI is less than or equal to a third threshold, And, the priority value included in the second SCI is less than or equal to the priority value included in the first SCI.
  • the first preemption condition when the first terminal is in the power saving mode or the DRX mode, the first preemption condition includes: a priority value included in the second SCI is less than or equal to a fourth threshold, and, The priority value contained in the second SCI is less than or equal to the priority value contained in the first SCI.
  • the processing module is further configured to determine that a second preemption condition is satisfied, the first terminal determines that the second time-frequency resource does not belong to the first resource set, and releases the second time-frequency resource.
  • the second preemption condition when the first terminal is in a non-power saving mode or a non-DRX mode, the second preemption condition is satisfied: the RSRP measurement value is greater than or equal to a fifth threshold; When a terminal is in the power saving mode or the DRX mode, the second preemption condition is: the RSRP measurement value is greater than or equal to a sixth threshold.
  • the processing module is further configured to perform resource selection, and determine the time-frequency resource for sideline transmission from the candidate resource set, wherein, satisfying the second resource exclusion condition, the first resource is the first resource.
  • a communication device comprising a processor coupled with a memory; a memory for storing computer programs or instructions; a processor for executing the computer programs or instructions stored in the memory to The communication device is caused to perform the method of any of the above first aspects.
  • a communication device comprising a processor coupled with a memory; a memory for storing computer programs or instructions; a processor for executing the computer programs or instructions stored in the memory to The communication device is caused to perform the method of any of the above second aspects.
  • a communication device comprising a processor coupled with a memory; a memory for storing computer programs or instructions; a processor for executing the computer programs or instructions stored in the memory to The communication device is caused to perform the method of any of the above third aspects.
  • a computer-readable storage medium comprising programs or instructions, which, when executed by a processor, cause the computer to execute any possible implementation manner of the above-mentioned first aspect.
  • a computer-readable storage medium comprising programs or instructions, which, when executed by a processor, cause the computer to execute any possible implementation manner of the second aspect.
  • a twelfth aspect provides a computer-readable storage medium, comprising programs or instructions, which, when executed by a processor, cause the computer to execute any possible implementation manner of the third aspect.
  • a thirteenth aspect provides a computer program product that, when the computer program product runs on a computer, causes the computer to execute any of the possible implementations of the first aspect above.
  • a fourteenth aspect provides a computer program product, which, when the computer program product runs on a computer, causes the computer to execute any one of the possible implementations of the second aspect above.
  • a fifteenth aspect provides a computer program product that, when the computer program product runs on a computer, causes the computer to execute any one of the possible implementations of the third aspect above.
  • a sixteenth aspect provides a communication system, characterized by comprising the communication device according to any one of the fourth aspect or the fifth aspect and the communication device according to any one of the sixth aspect.
  • any information transmission method, communication device, communication system or computer-readable storage medium provided above can be implemented by the corresponding method provided above, and therefore, the beneficial effects that can be achieved can be achieved. Referring to the beneficial effects in the corresponding methods provided above, details are not repeated here.
  • FIG. 1 is a schematic diagram of a communication system provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of determining a candidate time-frequency resource set according to an embodiment of the present application
  • FIG. 3 is a schematic flowchart of information transmission according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of resource preemption provided by an embodiment of the present application.
  • FIG. 5 is a schematic flowchart of another information transmission provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of the activation time of the first terminal before the triggering moment of resource preemption or resource re-evaluation in the implementation manner provided by the embodiment of the present application;
  • FIG. 7 is a schematic diagram of overlapping a first period of time and an inactive time provided by an embodiment of the present application.
  • FIGS 8-11 are schematic diagrams 1 to 4 of the communication apparatus provided by the embodiments of the present application.
  • 5G communication technology is the latest generation of cellular mobile communication technology, which is an extension of the fourth generation mobile communication technology, the third generation mobile communication technology and the second generation mobile communication technology.
  • the performance goals of 5G are high data rates, reduced latency, energy savings, lower costs, increased system capacity, and massive device connectivity.
  • UE User Equipment
  • UT User Terminal
  • MT Mobile Terminal
  • MS Mobile Station
  • RAN RadioAccess Network
  • the user equipment may be a mobile phone (or referred to as a "cellular" phone) or a computer with a mobile terminal, etc.
  • the user equipment may also be a portable, pocket-sized, hand-held, computer-built or vehicle-mounted mobile device, which Exchange voice and/or data with the radio access network.
  • the air interface resources may include time-domain resources and frequency-domain resources, and the time-domain resources and frequency-domain resources may also be referred to as time-frequency resources.
  • the frequency domain resource may be located in a set frequency range, the frequency range may also be referred to as a frequency band (band) or a frequency band, and the width of the frequency domain resource may be referred to as a bandwidth (Band Width, BW).
  • the time-frequency resource can be specifically a resource grid, including the time domain and the frequency domain.
  • the time domain unit can be a symbol
  • the frequency domain unit can be a subcarrier.
  • the smallest resource unit in the resource grid can be called Resource Element (Resource Element, RE).
  • a resource block (Resource Block, RB) may include one or more subcarriers in the frequency domain, such as 12 subcarriers.
  • a time slot can include one or more symbols in the time domain.
  • a time slot can include 14 symbols (under the normal cyclic prefix (CP, Cyclic Prefix)) or 12 symbols (under the extended cyclic prefix) ).
  • various frame structures are introduced (that is, it can include various subcarrier intervals), so when defining a resource grid, a resource grid can be defined for each frame structure parameter.
  • the embodiments of the present application do not specifically limit the specific way of defining each frame structure, and do not limit the technical solutions of the present application.
  • the network device can allocate data channels for the terminal device from the resource grid through configuration information, such as configuring the Physical Downlink Shared Channel (PDSCH), Physical Uplink Shared Channel (Physical Uplink Shared Channel) Shared Channel, PUSCH) frequency domain resources and/or time domain resources.
  • the configuration information may indicate the symbol and/or RB to which the data channel is mapped, and the network device and the terminal device may perform data transmission through the data channel on the allocated time-frequency resource.
  • the downlink data transmission may refer to the base station sending data to the terminal device
  • the uplink data transmission may refer to the terminal device sending data to the network device.
  • the data may be generalized data, such as user data, system information, broadcast information, or other information.
  • the communication between the terminal devices involved in the communication system is widely referred to as side link (slidelink, SL) communication.
  • the sidelink may include sideline transmission in a vehicle wireless communication system, or sideline transmission in a device-to-device (Device to Device, D2D) communication system.
  • the terminal device may be a mobile phone (mobile phone), a tablet computer (Pad), a computer with a wireless transceiver function, a vehicle-mounted terminal, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, Wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical, wireless terminals in smart grid, transportation safety ), wireless terminals in smart cities, wireless terminals in smart homes, terminal equipment in 5G networks, or future evolving public land mobile networks (PLMNs) ) and so on.
  • the embodiments of the present application do not limit application scenarios.
  • terminal equipment The methods and steps implemented by the terminal device in this application may also be implemented by components (eg, chips or circuits) that can be used in the terminal device.
  • components eg, chips or circuits
  • terminal equipment the aforementioned terminal equipment and components (eg, chips or circuits) that can be provided in the aforementioned terminal equipment are collectively referred to as terminal equipment.
  • the terminal device or the network device may include a hardware layer, an operating system layer running on the hardware layer, and an application layer running on the operating system layer.
  • This hardware layer includes hardware such as central processing unit (CPU), memory management unit (MMU), and memory (also called main memory).
  • the operating system may be any one or more computer operating systems that implement business processing through processes, such as a Linux operating system, a Unix operating system, an Android operating system, an iOS operating system, or a Windows operating system.
  • the application layer includes applications such as browsers, address books, word processing software, and instant messaging software.
  • the embodiments of the present application do not specifically limit the specific structure of the execution body of the methods provided by the embodiments of the present application, as long as the program that records the codes of the methods provided by the embodiments of the present application can be executed to provide the methods provided by the embodiments of the present application.
  • the execution subject of the method provided by the embodiment of the present application may be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute a program.
  • FIG. 1 shows an example of a communication system to which the embodiments of the present application are applied, including sideline communication systems such as a V2X communication system and a D2D communication system.
  • the sideline communication system may include: SL communication between the vehicle terminal and the vehicle terminal (Vehicle to Vehicle, V2V), and SL communication between the vehicle terminal and the roadside infrastructure (Vehicle to Infrastructure, V2I) , SL communication (Vehicle to Pedestrian, V2P) between vehicle-mounted terminals and pedestrians, communication between terminal devices with energy-saving needs, communication between pedestrians and vehicle-mounted terminals, communication between pedestrians and pedestrians, and vehicle-mounted terminals and Uplink and downlink communication between network devices (Vehicle to Network, V2N).
  • the D2D communication system includes SL communication between terminal 1 and terminal 2 .
  • the resource allocation scheme of NR SL includes Mode 1 and Mode 2.
  • Mode 1 the network equipment performs resource scheduling for the terminal according to the side transmission requirements of the terminal, and in Mode 2, the terminal independently selects resources.
  • the resource selection process of the Mode 2 terminal supports the process of resource awareness, resource preemption or resource reselection.
  • the terminal can demodulate the SCI or other Sidelink measurement results of other terminals, demodulate the SCI to obtain the resource usage on the Sidelink, and combine with other measurement results such as the reference signal receiving power corresponding to the Sidelink (Reference Signal Receiving Power). , RSRP) value is judged to determine the time-frequency resources used for sideline transmission.
  • the process of resource preemption or resource reselection may determine or update resources for Sidelink transmission based on the result of the above-mentioned perceived resource selection process.
  • Step 1 The terminal determines the resource selection window and the candidate time-frequency resource set.
  • the resource selection window may be determined to be the time interval [n+T1, n+T2].
  • the value of T1 satisfies is determined according to the subcarrier spacing, The unit is time slot. If the subcarrier spacing of SL is different, the corresponding Different values can be obtained according to Table 1 below value of .
  • the value of T2 satisfies T 2min ⁇ T1 ⁇ the remaining packet delay budget (Packet Delay Budget, PDB), where the value of T 2min is associated with the priority value of the data, and T 2min can be 1, 5, 10 , 20 time slots.
  • PDB Packet Delay Budget
  • Table 1 is determined according to the subcarrier spacing value
  • the data priority values are integers 1 to 8, and the smaller the value, the higher the data priority level. Then different priority values can correspond to different T 2min .
  • the Sensing process of the Mode 2 UE may be triggered by the upper layer of the UE.
  • the triggering process of Sensing may specifically be that the application layer of the UE sends the request layer by layer to the physical layer according to the requirement of the UE to send services.
  • the media access control (Media Access Control, MAC) layer triggers the Sensing process to the physical layer to request the physical layer of the UE to determine a candidate resource set. Therefore, the upper layer of the UE can determine the time-frequency resource for transmitting PSCCH or PSSCH in this candidate resource set.
  • Media Access Control Media Access Control
  • the upper layer of the UE When the upper layer of the UE triggers the Sensing process, it can provide the following parameters for PSSCH or PSCCH transmission: resource pool for resource selection, priority of PSSCH or PSCCH transmission data, remaining packet delay budget (Packet Delay Budget, PDB) and Number of subchannels used for PSCCH or PSSCH transmission.
  • the parameter provided by the upper layer of the UE may further include a resource reservation interval, the unit of which may be milliseconds or a time slot.
  • a candidate time slot resource corresponds to any L consecutive sub-channel sets included in a time slot of the resource pool by the UE, that is, a single time slot resource can be denoted as R x, y , R x, y is expressed as the time slot A set of L consecutive sub-channels under y, where the indices of the sub-channels are respectively x+j, where j can be 0, 1, ...... L-1.
  • the process of determining the candidate time-frequency resource set may be as shown in FIG. 2 , where L is 2, the number of sub-channels corresponding to the resource pool is 6, and the sub-channel indices thereof are (0, 1, 2, 3 respectively). , 4, 5), it can be determined that the candidate time-frequency resource set includes 5 resources, including indexes (0, 1), (1, 2), (2, 3), (3, 4), (4, 5) of a single slot resource. Denote the total number of candidate time slot resources in the candidate time-frequency resource set as M.
  • Step2 The terminal determines the resource-aware window.
  • the terminal determines that the Sensing window is a time interval
  • T 0 is configured by radio resource control (Radio Resource Control, RRC) signaling, is determined according to the subcarrier spacing, The unit is time slot. If the subcarrier spacing of SL is different, the corresponding Different values can be obtained according to Table 2 below value of .
  • RRC Radio Resource Control
  • Table 2 is determined according to the subcarrier spacing value
  • Step3 The terminal determines the parameter TH( pi ) according to the parameter SL- ThresRSRP_pi _p j configured by the RRC, where pi is used to indicate the priority value of the terminal's data, and pi is the configured priority value.
  • Step 4 The terminal determines that S is initialized as a candidate time-frequency resource set.
  • Step 5 The terminal performs resource exclusion from the candidate time-frequency resource set S according to any period configured on the resource pool according to the time slot that is not monitored in step 2.
  • Step6 According to the time-frequency resource indication information of the SCI received by the terminal in the resource-aware window determined in Step2, the terminal combines the reference signal receiving power (Reference Signal Receiving Power, RSRP) measurement value with the RSRP threshold value. Corresponding time-frequency resources are excluded from the resource set S.
  • RSRP Reference Signal Receiving Power
  • the terminal may exclude the time-frequency resources indicated by the received SCI from the candidate time-frequency resource set S that overlap with the candidate resources in the candidate resource set and whose RSRP measurement value is greater than the RSRP threshold. candidate resource.
  • Step 7 The terminal determines that the number of time-frequency resources in the candidate time-frequency resource set S is less than or equal to X ⁇ M, increases the configured RSRP threshold by 3dB, and returns to Step 4 to select candidate resources.
  • the upper layer of the UE will trigger a resource preemption check operation to determine and update the candidate time-frequency resource set, so that the upper layer can select from the resource set determined (updated) by the physical layer for PSCCH or PSSCH transmission time-frequency resources.
  • the resource set corresponding to the resource preemption check issued by the upper layer of the UE may be (r 0 , r 1 , r 2 . . . ).
  • the determination of the time-frequency resource set required by the UE high layer for PSCCH or PSSCH transmission depends on the specific UE implementation, and the resource preemption check can be performed in the time slot before the time slot after.
  • ri is the smallest slot index in the resource set (r 0 , r 1 , r 2 . . . ).
  • the source may be determined according to the subcarrier spacing with reference to the aforementioned Table 1.
  • the terminal determines a certain resource in the resource set (r 0 , r 1 , r 2 .
  • the time-frequency resource in the candidate time-frequency resource set S′ of the candidate time-frequency resource set S′, and the resource satisfies the following judgment conditions: the RSRP measurement value corresponding to the received SCI corresponding to the resource satisfies the preset condition, and proc TX ⁇ proc pre and proc TX ⁇ proc RX
  • the UE should report the preemption information of the resource to the upper layer of the UE, indicating that the resource has been preempted by other UEs with a higher priority.
  • proc RX represents the priority value of the data sent by the SCI of other terminals received by the UE
  • proc TX is the priority value of the data sent by the SCI sent by the UE
  • proc pre is the pre-configured priority used for preemption check judgment value. A lower priority value indicates a higher priority.
  • the upper layer of the UE will trigger a resource re-evaluation operation to re-determine and update the candidate time-frequency resource set, so that the upper layer can select from the resource set determined (updated) by the physical layer for PSCCH or time-frequency resources for PSSCH transmission.
  • the resource set corresponding to the resource re-evaluation delivered by the upper layer of the UE may be (r 0 , r 1 , r 2 . . . ).
  • the determination of the time-frequency resource set required by the UE high layer for PSCCH or PSSCH transmission depends on the specific UE implementation, and the resource preemption check can be performed in the time slot before the time slot after.
  • ri is the smallest slot index in the resource set (r 0 , r 1 , r 2 . . . ).
  • the source may be determined according to the subcarrier spacing with reference to the aforementioned Table 1.
  • the terminal determines a certain resource in the resource set (r 0 , r 1 , r 2 . the time-frequency resource in the candidate time-frequency resource set S', the UE should report a re-evaluation request for the resource to the upper layer of the UE, indicating that the resource needs to be released and/or replaced.
  • the UE is configured with an energy-saving mode or a discontinuous reception (Discontinuous Reception, DRX) mode, wherein the DRX mode is the part of the time period of the UE in a DRX cycle. (ON duration) is active, and part of the time period (OFF duration) is inactive.
  • DRX discontinuous Reception
  • the UE When the UE is in the active state, it can monitor control signaling, such as monitoring the physical Sidelink Control Channel (Pysical Sidelink Control Channel, PSCCH), where the PSCCH can be used to transmit Sidelink Control information (Sidelink Control information, SCI).
  • PSCCH Physical Sidelink Control Channel
  • SCI Sidelink Control information
  • the embodiments of the present application provide an information transmission method.
  • the technical solutions provided in this application can be applied to various communication systems, such as 5G communication systems, vehicle wireless communication systems V2X, future evolution systems or multiple communication fusion systems, sideline communication systems, and the like.
  • the technical solutions provided in this application can be applied to various application scenarios of the above communication system, for example, enhanced mobile internet (enhanced mobile broadband, eMBB) communication, ultra-reliable & low latency communication (ultra reliable & low latency communication, uRLLC) and massive machine type communication (mMTC) scenarios.
  • enhanced mobile internet enhanced mobile broadband
  • uRLLC ultra-reliable & low latency communication
  • mMTC massive machine type communication
  • the embodiments of the present application can be applied to a communication system as shown in FIG. 1 , where the communication system includes at least two terminal devices, such as a first terminal and a second terminal.
  • the method may include the following.
  • S301 The second terminal sends sidelink control information SCI, where the SCI includes energy saving indication information and first time-frequency resource information.
  • the SCI is divided into two levels, including the first-level SCI and the second-level SCI.
  • the first-level SCI is carried in the PSCCH
  • the second-level SCI is carried in the PSSCH.
  • the energy saving indication information included in the SCI referred to in this application may be carried in the first-level SCI or the second-level SCI, which is not specifically limited in this application.
  • the energy-saving indication information is used to indicate that the second terminal is in an energy-saving state or a non-energy-saving state.
  • a terminal in an energy-saving state is in a dormant state for a certain period of time and cannot monitor the control signaling SCI.
  • the power saving indication information is used to indicate that the second terminal is in at least one of a power saving mode, a non-power saving mode, a DRX mode for discontinuous reception, a non-DRX mode, or a power saving level of the second terminal.
  • the energy saving level is used to indicate the energy saving degree of the second terminal. The higher the energy saving level is, the higher the energy saving degree of the second terminal is, and the lower the energy saving level is, the lower the energy saving degree of the second terminal is. Among them, the larger the value of the energy-saving level, the higher the energy-saving level. In the present invention, the corresponding relationship between the numerical value of the energy saving level and the energy saving level is not limited.
  • the energy saving level has a corresponding relationship with the ratio of the active time or the inactive time in the DRX cycle configured by the second terminal in the DRX cycle. That is to say, different energy saving levels may be divided according to the different proportions of the active time in the DRX cycle configured by the second terminal; or, different energy saving levels may be divided according to the different proportions of the inactive time in the DRX cycle configured by the second terminal Energy saving class.
  • the activation time here can also be understood as the activation period, and the inactivation time can be understood as the inactivation period, the sleep period, and the sleep time.
  • the larger the proportion of active time in the DRX cycle the more time the UE is in the active state, the higher the energy saving effect and the higher the corresponding energy saving level. Among them, the larger the value of the energy-saving level, the higher the energy-saving level.
  • the ratio of the active time in the DRX cycle to 1 indicates that the second terminal is in a dormant state. At this time, the energy saving level is the lowest.
  • the present invention does not limit the corresponding relationship between the energy saving level and the energy saving effect.
  • the interval division of the proportion of the activation time in the DRX cycle of the present invention is also not limited.
  • the energy saving level has a corresponding relationship with the DRX cycle length configured by the second terminal. That is to say, different energy-saving levels may be divided according to the length of the DRX cycle configured by the second terminal.
  • the DRX mode of the second terminal is configured with one long period and one short period
  • three different indications may be used to represent the DRX long period, the DRX short period and the non-DRX mode respectively.
  • 2 bits are used to indicate the three states of DRX long cycle, DRX short cycle, and non-DRX mode.
  • different DRX energy saving levels may be corresponding to different ranges of DRX cycle lengths.
  • the DRX cycle length is divided into 5 intervals from large to small, and different intervals correspond to different DRX energy saving levels.
  • 3 bits are used to indicate the five different power saving levels, and each state corresponds to one power saving level and an interval of the length of the DRX cycle.
  • the longer the DRX cycle length the higher the energy saving degree and the higher the energy saving level.
  • the present invention does not limit the corresponding relationship between the DRX cycle and the energy saving level.
  • the resource selection method can be the above-mentioned full sensing (Sensing) method.
  • a partial sensing (Partial sensing) method based on the LTE system can also be applied, or the method of randomly selecting resources , wherein, for the resource selection manner of partial perception and random selection, reference may be made to the relevant introduction of the prior art, which is not described in detail in this application. Therefore, different energy-saving levels can also be configured to indicate a resource selection manner of the second terminal. For example, different power saving levels correspond to one or more of full perception, partial perception and random selection. That is, the above-mentioned different resource selection manners correspond to different energy-saving levels respectively.
  • the first time-frequency resource information included in the SCI sent by the second terminal is used to indicate time-frequency resource location information corresponding to the data of the second terminal, indicating that the second terminal will send data on the first time-frequency resource. Therefore, the SCI may also include the priority value of the data.
  • S302 The first terminal receives the SCI.
  • the first terminal may monitor SCIs from other UEs in the above-mentioned perceived resource selection process, and then receive the SCIs sent by the above-mentioned second terminal.
  • the first terminal determines time-frequency resources for sideline transmission according to the SCI.
  • the first terminal determines that the energy-saving indication information in the SCI satisfies the first resource exclusion condition, and the first time-frequency resource overlaps with the candidate resources in the candidate resource set of the first terminal, then the first time-frequency resource will be compared with the first time-frequency resource.
  • the overlapping candidate resources are excluded from the candidate resource set to obtain time-frequency resources for sideline transmission.
  • the first resource exclusion condition includes: the energy saving indication information is that the second terminal is in the energy saving mode, or the second terminal is in the DRX mode, or the energy saving level of the second terminal meets a preset range.
  • the energy saving indication information is that the second terminal is in the energy saving mode, or the second terminal is in the DRX mode, or the energy saving level of the second terminal meets the preset range. It can also be understood that the energy saving indication information indicates that the second terminal is in the energy saving mode, or the second terminal is in the DRX mode, or the energy saving level of the second terminal satisfies the preset range. It can also be understood that the energy-saving indication information is an energy-saving mode, a DRX mode, and an energy-saving level within a preset range.
  • the power-saving mode may be understood as being in a power-saving state
  • the DRX mode may be understood as being in a DRX state or having a DRX function or DRX is configured or DRX is enabled.
  • the energy-saving level within the preset range may be understood as, among one or more energy-saving levels, the second terminal is at a higher energy-saving level.
  • the first terminal determines that the first time-frequency resource overlaps with the candidate resources of the first terminal in the perceived resource selection process, and that the energy saving state of the second terminal satisfies the first
  • a resource exclusion condition means that the first terminal does not preempt resources from the second terminal that needs to save energy.
  • the first terminal may exclude candidate resources that overlap with the first time-frequency resource from the candidate resource set to meet the energy saving requirement of the second terminal.
  • the energy saving indication information in the SCI of the second terminal indicates that the second terminal is in the energy saving mode, or the second terminal is in the DRX mode, or the energy saving level of the second terminal satisfies the preset range. Then the first terminal will not preempt the first time-frequency resource indicated by the SCI in the resource selection mode of perception or partial perception.
  • the first terminal in the resource selection mode of perception or partial perception by the first terminal, when the first time-frequency resource indicated by the SCI overlaps with the candidate resources of the first terminal in the resource selection process of perception, the first terminal excludes the resource selection. There is an overlapping time-frequency resource with the first time-frequency resource.
  • the RSRP measurement value of the SCI may be greater than or equal to the RSRP threshold, or may be smaller than the RSRP threshold.
  • the first resource exclusion condition may further include: the priority value of the data corresponding to the SCI is less than or equal to the first threshold, or, the priority value of the data corresponding to the SCI is less than or equal to the second threshold and the SCI corresponds to The priority value of the data is greater than or equal to the third threshold.
  • the priority value of the data corresponding to the SCI can be understood as the priority value indicated by the priority field included in the SCI, or the value of the priority field included in the SCI.
  • the first terminal determines that the first time-frequency resource overlaps with the candidate resources of the first terminal in the perceived resource selection process, and the second terminal's SCI schedules
  • the priority value of the data is smaller than the priority value of the data scheduled by the SCI of the first terminal, or the priority value of the data scheduled by the SCI of the second terminal satisfies the preset range, or the data scheduled by the SCI of the second terminal
  • the priority value of the first terminal is less than or equal to the first threshold, then the first terminal does not preempt resources from the second terminal with higher data priority, and the first terminal can remove candidate resources that overlap with the first time-frequency resources from the candidate resource set is excluded in order to meet the reliability of the data transmission of the second terminal.
  • the first resource exclusion condition may further include the above two conditions, that is, the energy saving indication information indicates that the second terminal is in the energy saving mode, or the second terminal is in the DRX mode, or the energy saving level of the second terminal satisfies a preset and the priority value of the data corresponding to the SCI is within a preset range or the priority value of the data corresponding to the SCI is less than or equal to the first threshold.
  • the priority value of the data corresponding to the SCI can be understood as the priority value indicated by the priority field included in the SCI, or the value of the priority field included in the SCI.
  • the first terminal determines the time-frequency resources for sideline transmission according to the SCI, which may further include: the first terminal determines that the reference signal received power RSRP satisfies the second resource exclusion condition, and the first time If the frequency resource overlaps with the candidate resource in the candidate resource set of the first terminal, the candidate resource that overlaps with the first time-frequency resource is excluded from the candidate resource set to obtain the remaining time-frequency resource, which is then used for sideline traffic.
  • the second resource exclusion condition specifically includes: the RSRP measurement value is greater than or equal to the first RSRP threshold.
  • the first terminal determining that the reference signal received power RSRP satisfies the second resource exclusion condition may be understood as meeting the second resource exclusion condition.
  • the first terminal may further determine the corresponding RSRP threshold according to whether the second terminal indicated in the detected SCI is in the energy saving mode. That is, if the energy saving indication information included in the SCI indicates that the second terminal is in the energy saving mode, or the second terminal is in the DRX mode, or the energy saving level meets the preset range, the second resource exclusion condition includes: the RSRP measurement value is greater than or equal to Second RSRP threshold. If the energy saving indication information is that the second terminal is in a non-power saving mode or the second terminal is in a non-DRX mode, the second resource exclusion condition includes: the RSRP measurement value is greater than or equal to a third RSRP threshold.
  • the third RSRP threshold may be the same as or different from the first RSRP.
  • the first terminal may acquire two RSRP thresholds, including a second RSRP threshold and a third RSRP threshold.
  • the first terminal uses the second RSRP threshold.
  • the energy-saving indication information included in the received SCI indicates that the second terminal is in a non-energy-saving mode, or the second terminal is in a non-DRX mode, or the energy-saving level of the second terminal does not meet the preset range
  • the first terminal uses the third threshold .
  • the third threshold is the default RSRP threshold.
  • the second threshold is not configured, or the configuration of the first threshold is default, or the first terminal does not obtain the second threshold, the second terminal uses the second threshold. threshold.
  • the second threshold may be smaller than the third threshold.
  • the first terminal may further determine the corresponding RSRP threshold according to the energy saving level of the second terminal indicated in the detected SCI. That is, if the energy saving indication information included in the SCI includes the energy saving level of the second terminal, the second resource exclusion condition includes: the RSRP measurement value is greater than or equal to the RSRP threshold corresponding to the energy saving level of the second terminal.
  • the energy saving level is related to the RSRP threshold.
  • the energy saving levels are 4 levels, and the 4 levels may be associated with 2 RSRP thresholds.
  • the energy saving level as the proportion of the activation time in the DRX cycle as an example, as shown in the aforementioned Table 3, assuming that the two RSRP thresholds are the second threshold and the third threshold, respectively, the second threshold corresponds to the energy saving level 3 and the energy saving level. 4.
  • the third threshold corresponds to energy saving level 1 and energy saving level 2.
  • the second threshold is smaller than the third threshold. It should be known that, under the condition that other resource exclusion conditions are met in advance, since the smaller the RSRP threshold is, the higher the probability that the terminal judges that a certain resource should be excluded, the candidate resources that the corresponding resources of the UE in DRX mode overlap with. Easier to be excluded from the candidate resource set.
  • the RSRP threshold is not configured in the RRC signaling sent by the base station, the first terminal does not consider the RSRP measurement value, determines that the above-mentioned first resource exclusion condition is satisfied, and excludes the corresponding overlap from the candidate resource set time-frequency resources.
  • the terminal and the network device pre-agreed that if the second threshold is not configured in the RRC signaling delivered by the network device, the RSRP threshold corresponding to the SL defaults to the third threshold.
  • the second resource exclusion condition specifically includes that the preemption priority threshold of the first terminal is associated with the energy saving indication information. That is to say, when the priority value of the data to be sent is smaller than the preemption priority threshold, the first terminal will preempt the first time-frequency resource that overlaps with the candidate resources in the perceived or partially perceived resource selection mode.
  • the frequency resource is the time-frequency resource indicated by the SCI received by the first terminal.
  • the priority value of the data to be sent is the priority value used in the resource selection mode for sensing or partial sensing.
  • the preemption priority threshold may be a threshold at which the first terminal determines whether to preempt resources according to the priority of sending data.
  • different preemption priority thresholds may be configured according to the energy saving state of the terminal.
  • the first terminal may acquire two preemption priority thresholds, including a first priority threshold and a second priority threshold. That is, the first priority threshold and the second priority threshold are both preemption priority thresholds.
  • the first terminal uses the first priority threshold.
  • the energy-saving indication information included in the received SCI indicates that the second terminal is in a non-energy-saving mode, or the second terminal is in a non-DRX mode, or the energy-saving level of the second terminal does not meet the preset range.
  • the first terminal uses the second priority level threshold.
  • the first priority threshold is smaller than the second priority threshold.
  • the priority threshold is the lower the probability of the terminal judging that a certain resource is preempted, and the higher the probability of the terminal judging that a certain resource should be excluded, the corresponding resources of the UE in DRX mode are less likely to be used. seize.
  • the first priority threshold is not configured in the RRC signaling delivered by the base station, the first terminal uses the second priority threshold, and the second priority threshold is the default preemption priority threshold.
  • the energy saving indication information in the above-mentioned SCI may be carried in the first-level SCI or the second-level SCI.
  • the energy saving indication information may be carried in a field contained in the SCI. This field may be at least one reserved bit or bits.
  • the first-level SCI or the second-level SCI includes a field to carry energy-saving indication information, and the field may be at least one bit. The number of bits and the agreed manner depend on the division requirement and quantity of the carried energy saving indication information, which is not specifically limited in this application.
  • the energy-saving indication information is carried in a reserved bit of the first-level SCI or the second-level SCI, and the value of this bit can be 1 to indicate that the terminal is in the energy-saving mode or DRX mode, and the value of this bit is 0 It is used to indicate that the terminal is in a non-power-saving mode or a non-DRX mode.
  • the energy saving indication information is carried in two bits of the first-level SCI or the second-level SCI, the value of this bit is 00 to indicate that the terminal is in the non-DRX mode, and the value of this bit is 01 to indicate When the terminal is in the energy saving level 1 of the DRX mode, the value of this bit is 10 to indicate that the terminal is in the energy saving level 2 of the DRX mode, and the value of this bit is 11 to indicate that the terminal is in the energy saving level 3 of the DRX mode.
  • different energy-saving indication information can also be distinguished by different formats of the first-level SCI or the second-level SCI, that is, the different energy-saving indication information is carried in the first-level SCI or the second-level SCI in different formats.
  • SCI that is, the first format of the second-level SCI is used to indicate that the terminal is in the energy saving mode or the DRX mode.
  • the second format of the second-level SCI is used to indicate that the terminal is in a non-power saving mode or a non-DRX mode.
  • the first format of the second-level SCI is used to indicate that the terminal is in the energy-saving mode or the DRX mode
  • a field or an indication state in the second format of the second-level SCI is used to indicate that the terminal is in a non-energy-saving mode or Non-DRX mode.
  • a field or an indication state in the first format of the second-level SCI is used to indicate that the terminal is in the energy-saving mode or the DRX mode
  • the second format of the second-level SCI is used to indicate that the terminal is in a non-energy-saving mode or Non-DRX mode.
  • the second-level SCI is scrambled by a radio network temporary identity (Radio Network Tempory Identity, RNTI), where the RNTI is associated with or corresponds to the energy saving indication information.
  • RNTI Radio Network Tempory Identity
  • S303 may further include that the first terminal receives the SCI, and uses an adjustment factor to adjust the priority value of the priority field included in the SCI.
  • the adjustment factor may be configured by the network device, or may be configured on the resource pool. If the adjustment factor is greater than 1, the adjustment factor is divided by the priority value contained in the SCI, or the adjustment factor is subtracted from the priority value contained in the SCI. If the adjustment factor is less than 1, the priority value contained in the SCI is multiplied by the adjustment factor and rounded down or up. When the adjusted priority value is less than the minimum priority value, the minimum priority value is used. That is, the process of using the smallest priority value to perform resource exclusion in a perceptual or partially perceptual resource selection manner.
  • the energy saving indication information for indicating that the terminal is in the DRX mode or the energy saving mode in the SCI by carrying the energy saving indication information for indicating that the terminal is in the DRX mode or the energy saving mode in the SCI, other terminals can determine resources according to the energy saving indication information in the process of resource selection. Do not preempt the corresponding reserved resources of the terminal in the energy saving mode or the DRX mode or the energy saving level in the preset range.
  • the terminal can find the terminal with energy saving demand, so as to reduce the energy saving demand by excluding time-frequency resources that overlap with the time-frequency resources of the UE with energy saving demand, or by reducing the RSRP threshold
  • the candidate resource corresponding to the UE has a probability of being preempted, which effectively ensures the low interference of the resources of the energy-saving UE, and avoids the UE resources in the energy-saving mode from being robbed and unknown, thereby ensuring the reliability and quality of the data transmission of the energy-saving UE.
  • the number of retransmissions of its data transmission is reduced, and the operation efficiency of the communication system is improved.
  • the reserved resources for the energy-saving UE are excluded, which ensures the reliability and transmission quality of the energy-saving UE in transmitting high-priority services, and reduces the number of retransmissions of its data transmission. , to improve the data transmission performance of the communication system.
  • An embodiment of the present application further provides an information transmission method, which is applied to the communication system as shown in FIG. 1, where the communication system includes at least two terminal devices, such as a first terminal and a second terminal. As shown in Figure 5, the method may include the following.
  • S501 The first terminal receives configuration information.
  • the configuration information is used to indicate that the resource selection mode of the first terminal is sensing or partial sensing.
  • the configuration information may be configured by the network device, may be configured by RRC signaling, or may be configured on the resource pool. It may also be that the configuration information indicates that the resource selection mode of the first terminal may be perceptual or partially perceptual, and the specific use of the perceptual or partial perceptual resource selection mode is determined by the first terminal.
  • the first terminal is in a DRX mode, an energy saving mode, a non-DRX mode or a non-energy saving mode.
  • S502 The first terminal determines that the second time-frequency resource is occupied or needs to be re-evaluated.
  • the second time-frequency resource may be one of reserved time-frequency resources indicated in the SCI sent by the first terminal.
  • Occupied means that the second time-frequency resources are preempted or occupied by other UEs, or selected as reserved resources by other UEs, or the second time-frequency resources overlap with reserved resources of other UEs. That is, the first terminal can determine whether the second time-frequency resource is occupied by other UEs through resource preemption check.
  • the method may further include: the first terminal determines whether to enable resource pre-emption or resource re-evaluation. Specifically, it can include the following three ways:
  • Manner 1 The first terminal determines to enable resource preemption or resource re-evaluation according to RRC signaling.
  • the first terminal may determine whether the function of resource preemption or resource re-evaluation is enabled in the resource pool according to the RRC signaling configured by the network device. If it is determined according to the RRC signaling that the resource pool configured by the network device is enabled with the function of resource preemption or resource re-evaluation, the first terminal may determine whether to perform resource pre-emption or resource re-evaluation according to the following conditions; if according to the RRC signaling If it is determined that the resource pool configured by the network device is not enabled with the function of resource preemption or resource re-evaluation, the first terminal will not perform resource pre-emption or resource re-evaluation.
  • the first terminal enables the DRX function on the resource pool, and disables the function of resource preemption or resource re-evaluation.
  • the function of disabling resource preemption or resource re-evaluation includes that the terminal does not check whether the reserved resource is preempted or needs to be re-evaluated, that is, it will not perform resource re-selection for the reserved resource due to pre-emption or re-evaluation.
  • Disabling the function of resource preemption or resource re-evaluation also includes that the terminal cannot perform resource pre-emption or resource re-evaluation.
  • the first terminal may determine whether to enable resource preemption or resource re-evaluation according to whether the first terminal is in the energy-saving mode, DRX mode, or non-energy-saving mode or non-DRX mode.
  • the first terminal determines that the resource pool enables resource preemption or resource collision assessment, then the first terminal does not support resource preemption according to the fact that the first terminal is in the DRX mode, that is to say, the UE in the DRX mode or the energy-saving mode may not be subject to preemption inspection Influence. It can be understood that the UE in the DRX mode or the energy saving mode will not check whether the reserved resources are occupied or preempted by other terminals. UEs in DRX mode or power saving mode also do not check whether the reserved resources need to be re-evaluated.
  • Manner 3 If the resource pool enables resource preemption or resource impact evaluation, the first terminal determines to enable resource preemption or resource re-evaluation according to the received priority value of the data included in the SCI meeting a preset condition.
  • the priority of the data included in the SCI can be understood as the value of the priority field included in the SCI, the priority value of the priority field included in the SCI, and the priority value of the data scheduled by the SCI. That is to say, on the basis of determining that the resource pool enables resource preemption or resource re-evaluation, the first terminal can also judge whether the first terminal is really enabled according to whether the priority value included in the received SCI satisfies the preset condition.
  • the function of resource preemption or resource re-evaluation For example, if the priority value included in the SCI received by the first terminal is smaller than the preset priority threshold threshold-priority, the first terminal actually enables resource preemption or resource re-evaluation.
  • the priority threshold threshold-priority may be configured on the resource pool according to RRC signaling. If the priority threshold is not configured or is in a default state, the first terminal disables resource preemption or resource re-evaluation.
  • the first terminal may also judge whether the first terminal really enables resource preemption or resource re-evaluation according to whether the measured CBR meets a preset condition. Evaluation function. For example, if the first terminal determines that the CBR measurement value is greater than the preset CBR threshold threshold-CBR, the first terminal actually enables resource preemption or resource re-evaluation.
  • the CBR threshold threshold-CBR may be configured on the resource pool according to the RRC signaling.
  • the CBR measurement value may be the CBR measurement value at the moment when the terminal is triggered to perform resource preemption or resource re-evaluation.
  • the measured value of CBR may also be the measured value of CBR at K times before the time when the terminal is triggered to perform resource preemption or resource re-evaluation.
  • K is the CBR processing time. If the CBR threshold is not configured or is in a default state, the first terminal disables resource preemption or resource re-evaluation.
  • the terminal can ensure the energy saving effect according to determining whether resource preemption or resource re-evaluation is really enabled.
  • resource preemption or resource re-evaluation can be enabled to ensure the reliability and transmission quality of data transmission with higher priority, and improve the data transmission performance of the communication system.
  • the CBR measurement value to determine whether resource preemption or resource re-evaluation is really enabled it can be comprehensively judged that when the current channel congestion is serious, the probability of resource preemption is high. At this time, ensuring the energy saving effect will lead to the reliability of transmission cannot be guaranteed.
  • the terminal can sacrifice the energy saving effect and enable resource preemption to prioritize the reliability of data transmission and the quality of service, thereby reducing the number of retransmissions.
  • the first terminal if the first terminal is in the energy saving mode or the DRX mode, in the above step S502, in the case that the first terminal determines that the second time-frequency resource is preempted or needs to be re-evaluated, the first terminal preempts the resource Or the first time period before the resource re-evaluation trigger time is the activation time.
  • the UE1 is configured with the energy saving function or the DRX function, or is in the DRX mode, and currently the UE1 performs discontinuous reception. And according to the above several manners, the UE1 determines that the resource preemption check is enabled. Then, the first period of time after the UE1 sends the PSCCH or PSSCH is the activation time or the activation period of the UE1, or the UE1 is in an active state and can continuously receive signals.
  • the activation time can be understood as a time unit or a set of time domain resources in which SCI transmission or blind detection of PSCCH can be received or sensed or measured or monitored.
  • the activation time may be a time slot or a symbol, which is not limited here.
  • the start time of the first period may be the next symbol of the end symbol of the first SCI sent by the first terminal, and the end time of the first period may be the previous symbol of N time slots before the next reserved time-frequency resource.
  • the first SCI can be a first-level SCI or a second-level SCI.
  • the start time of the first period may be the next symbol after the end symbol of the SCI or PSSCH sent by the first terminal, where the SCI may be the first-level SCI or the second-level SCI.
  • the first SCI of UE1 is transmitted on time-frequency resource 1 shown in the figure, and the nearest reserved resource position after time-frequency resource 1 is time slot m, then UE1 sends the first SCI after sending the first SCI.
  • the time-frequency resource 2 of the time-frequency resource 2 is in an active state in the first N time slots, that is, the first period in the figure can be represented as the period from which the first terminal sends the first SCI until m-N.
  • N is determined according to the subcarrier spacing, specifically, N can be the above-mentioned It can be determined by looking up the aforementioned Table 1 according to the subcarrier spacing.
  • the end time of the first period may also be a symbol preceding the start symbol of the next reserved time-frequency resource. That is, the first period can be the period after the first terminal sends the first SCI until the next reserved time-frequency resource, that is, the UE1 shown in FIG. 6 is in the time slot of the time-frequency resource 2 after sending the first SCI. active state.
  • the process of resource re-evaluation or resource preemption is not affected by the DRX function.
  • the UE1 wakes up and enters the active state during the inactive period within the first period.
  • the wake-up into the active state here can be understood as the transition of the UE1 from the inactive state to the active state, it can be understood as the UE1 switching from the inactive state to the active state, and the first period of time can be understood as the activation time.
  • UE1 is active.
  • the first period and the inactive time of UE1 completely overlap or partially overlap, as shown in FIG. 7 , where the partial overlap may include overlapping right period or left period, or overlapping middle period.
  • the overlapping right period indicates that the inactive time of UE1 overlaps with the right part of the first period
  • the overlapping left period indicates that the inactive time of UE1 and the left part of the first period overlap
  • the middle period overlapping indicates that the inactive time of UE1 and the first period overlap.
  • the middle part of the period overlaps. Then the UE1 can wake up from the inactive state and enter the active state in the overlapping part of the time period, so as to ensure that the SCI of other terminals is sensed or monitored in the first time period, so as to perform resource preemption check.
  • the first time period is the activation time of the first terminal, which may further include: after the first terminal transmits sideline data or the first SCI, the first terminal starts a first timer, and sets the first timer.
  • the duration of the timer is the above-mentioned first period.
  • the start time of the first timer may be the next symbol of the end symbol of the first SCI sent by the first terminal, and the end time of the first timer may be the previous symbol of N time slots before the next reserved time-frequency resource , or, the end time of the first timer may also be the previous symbol of the start symbol of the next reserved time-frequency resource.
  • the first SCI may be a first-level SCI or a second-level SCI.
  • whether the terminal is in the energy-saving mode or the DRX mode will not affect the resource preemption check or resource re-evaluation, so as to ensure that the preemption check process of the terminal in the energy-saving mode can be performed normally, so that the resource preempted terminal can Re-selecting resources to obtain lower-interference time-frequency resources increases the reliability and transmission quality of data transmission, reduces the number of retransmissions, and improves the data transmission efficiency of the communication system.
  • the first terminal is in the energy saving mode or the DRX mode, and in the case that the first terminal determines that the second time-frequency resource is preempted or needs to be re-evaluated, in the above step S502, the first terminal determines the first time period Conditions for activation time can also include:
  • Condition 1 If the priority value contained in the first SCI sent by the first terminal is lower than the preset first threshold, and/or the measured CBR is greater than or equal to the preset second threshold, the first terminal determines that the first The period is the activation time.
  • the first terminal when the first terminal is in the energy saving mode or the DRX mode, whether to activate or not is determined according to whether the priority value included in the first SCI determined by the first terminal satisfies a preset condition. For example, if priority-TX ⁇ the first threshold, the first terminal determines that the current data priority is higher, and can wake up from the inactive state to the active state, so as to perform resource sensing and resource preemption checking. priority-TX ⁇ the first threshold, the first terminal determines that the current data priority is low, and to ensure energy saving requirements, the first terminal will not wake up from the inactive state to activate the state, that is, UE1 is not affected by the preemption check.
  • Condition 2 Whether the CBR measured by the first terminal is greater than or equal to the preset second threshold satisfies the preset condition determines whether to activate.
  • whether to activate or not may also be determined based on whether the CBR measured by the first terminal satisfies a preset condition. Whether to activate or not here can be understood as whether the inactive time of the first terminal in the first period of time is converted into the activation time.
  • the CBR may be a CBR value measured at the moment when the SCI is sent.
  • the first terminal determines that the current transmission channel is congested, and can wake up from the inactive state to the active state to perform resource sensing and resource preemption checking.
  • CBR ⁇ (less than) the second threshold then the first terminal determines that the current transmission channel is unblocked or the current channel state is not so congested, the first terminal will not wake up from the inactive state to the active state in order to ensure energy saving requirements, that is, UE1 does not Affected by preemption checks.
  • condition 1 and condition 2 can be combined, that is, when both the above-mentioned conditions are satisfied, the first terminal determines to activate (that is, wake up from the inactive state and enter the active state). state).
  • the first threshold may be configured on the resource pool by the network device using RRC. If the first threshold is not configured or defaulted, the first time period is determined as the activation time.
  • the second threshold may be configured on the resource pool by the network device using RRC. If the second threshold is not configured or defaulted, the first time period is determined as the activation time.
  • the first threshold and the second threshold may be configured by those skilled in the art according to data transmission requirements, which are not specifically limited in this application.
  • a terminal in DRX mode can combine data priority and CBR measurement value to determine whether to activate resource preemption check or resource impact assessment, that is, to ensure resource preemption check or resource impact under certain conditions
  • the assessment may not consider the energy-saving needs of the terminal. For example, when the channel is heavily congested or for high-priority transmission data, the terminal in the energy-saving mode may activate to enter the non-energy-saving mode, so as to ensure that the preemption check process can be performed normally.
  • the above method can ensure that the preempted terminal can reselect resources to obtain resources with lower interference, increase the reliability and transmission quality of data transmission, reduce the number of data retransmissions, and improve communication.
  • the data transfer efficiency of the system can ensure that the preempted terminal can reselect resources to obtain resources with lower interference, increase the reliability and transmission quality of data transmission, reduce the number of data retransmissions, and improve communication.
  • step S502 in the above embodiment may further include, according to the foregoing resource preemption process, the high layer of the first terminal triggers resource preemption (check), and the physical layer of the first terminal receives the resource preemption indicated by the high layer
  • the corresponding time-frequency resource set for example, may be (r 0 , r 1 , r 2 . . . ).
  • the first terminal determines/updates the candidate resource set S′ (the first resource set), the first terminal preempts the corresponding time-frequency resource set (r 0 , r 1 , r 2 . Preempted/occupied resources.
  • the second time-frequency resource may be one resource in the (r 0 , r 1 , r 2 . . . ) set.
  • the first terminal determines that the second time-frequency resource does not belong to the first resource set, and the priority value included in the second SCI corresponding to the second time-frequency resource satisfies the first preemption condition, the first terminal marks the second time-frequency resource for occupied resources.
  • the first preemption condition is that the priority value included in the second SCI corresponding to the second time-frequency resource is lower than the priority value included in the received SCI, and the priority value included in the received SCI is lower than the preemption threshold. .
  • the physical layer of the first terminal may report the preemption information of the second time-frequency resource to the upper layer of the first terminal, indicating that the second time-frequency resource has been occupied by other terminals transmitting higher priority data. Further, the first terminal may release the second time-frequency resource. Optionally, the first terminal releases the second time-frequency resource, and reselects the time-frequency resource.
  • the time-frequency resources in the first resource set may be used for re-selecting the time-frequency resources.
  • the first resource set is a time-frequency resource set determined by the first terminal, and the second time-frequency resource is a reserved resource of the first terminal.
  • the first resource set is a time-frequency resource set determined by the first terminal, which can be understood as a time-frequency resource set acquired during the resource selection process performed by the first terminal for perception.
  • the second time-frequency resources are reserved resources of the first terminal, which can be understood as the time-frequency resources indicated in the SCI sent by the first terminal.
  • the first terminal receives the second SCI corresponding to the second time-frequency resource, and the second SCI may be sent by other terminals, such as the second terminal, to indicate the time-frequency resource information reserved by the second terminal.
  • the first terminal uses the second SCI information in the perceived resource selection process.
  • the following conditions may be configured for the terminal: a first preemption condition judged based on the priority value of the data, or, based on the RSRP measurement value.
  • the determined second preemption condition so that the terminal can determine different thresholds according to whether it is currently in the energy saving mode or the energy saving level to perform the preemption check judgment.
  • the first terminal can select the corresponding priority value threshold or RSRP threshold according to the current energy saving mode or DRX mode, and judge whether the condition for determining that the resource is preempted is satisfied; In DRX mode, select the corresponding priority value threshold or RSRP threshold, and judge whether the conditions for determining that the resource is preempted are met.
  • the design of the RSRP threshold is also suitable for the process of resource re-evaluation. That is, the first terminal can select the corresponding RSRP threshold according to the current energy-saving mode or DRX mode, and judge whether the resource is released due to re-evaluation; in addition, it can select the corresponding RSRP according to the current non-energy-saving mode or non-DRX mode. Threshold to determine whether the resource is released due to re-evaluation.
  • the first preemption conditions are based on the energy saving state of the first terminal, and may be:
  • the priority value included in the second SCI satisfies the first preemption condition, including:
  • the priority value contained in the second SCI is less than or equal to the third threshold, and the priority value contained in the second SCI is less than or equal to the priority value contained in the first SCI. Wherein, the smaller the priority value, the higher the level of the corresponding data priority.
  • the second SCI is the SCI received by the first terminal
  • the first SCI is the SCI sent by the first terminal
  • the time-frequency resources indicated by the second SCI overlap with the reserved resources indicated in the first SCI.
  • the third threshold is the preemption threshold, and the priority value included in the second SCI being less than or equal to the third threshold is one of the necessary conditions for the first terminal to determine whether the reserved resources indicated in the first SCI are occupied or preempted.
  • the priority value included in the second SCI satisfies the first preemption condition, including:
  • the priority value contained in the second SCI is less than or equal to the fourth threshold, and the priority value contained in the second SCI is less than or equal to the priority value contained in the first SCI.
  • the third threshold and the fourth threshold may be configured on the resource pool by the network device using RRC.
  • the second SCI is the SCI received by the first terminal
  • the first SCI is the SCI sent by the first terminal
  • the time-frequency resources indicated by the second SCI overlap with the reserved resources indicated in the first SCI.
  • the third threshold is the preemption threshold, and the priority value included in the second SCI being less than or equal to the third threshold is one of the necessary conditions for the first terminal to determine whether the reserved resources indicated in the first SCI are occupied or preempted.
  • the third threshold and the fourth threshold may be configured by those skilled in the art according to the requirements of data transmission, which are not specifically limited in this application.
  • the first terminal acquires the third threshold and the fourth threshold, and when the first terminal is in the non-energy-saving mode or the non-DRX mode, the first terminal uses the third threshold, and when the first terminal is in the energy-saving mode or the DRX mode, The first terminal uses the fourth threshold.
  • the third threshold may be smaller than the fourth threshold.
  • the third threshold is the preemption threshold, and it is one of the necessary conditions for the first terminal for the first terminal to determine whether the reserved resources indicated in the first SCI are occupied or preempted if the priority value included in the second SCI is less than or equal to the preemption threshold.
  • the preemption threshold is the priority value, and the smaller the value, the higher the priority level.
  • the first terminal may acquire the third threshold and the fourth threshold according to preconfigured information, or may acquire the third threshold and the fourth threshold by receiving the RRC signaling of the network device, wherein the configuration information of the third threshold and the fourth threshold may be Beared in RRC signaling.
  • the first preemption condition may be configured based on different energy saving levels. That is, the priority value contained in the second SCI meeting the first preemption condition may include:
  • the priority value contained in the second SCI is less than or equal to the fifth threshold, and the priority value contained in the second SCI is less than or equal to the priority value contained in the first SCI. Among them, the smaller the priority value, the higher the priority level.
  • the fifth threshold may have a corresponding relationship with the proportion of active time or inactive time in the DRX cycle of the first terminal, or may have a corresponding relationship with the length of the DRX cycle of the first terminal.
  • p0 represents the third threshold
  • a represents an adjustment factor
  • the adjustment factor a and the activation time or inactive time in the DRX cycle of the first terminal are in the DRX cycle.
  • the proportion of or, the adjustment factor a has a corresponding relationship with the DRX cycle length of the first terminal.
  • the first terminal may obtain the adjustment factor a according to preconfigured information, or may obtain the adjustment factor a by receiving RRC signaling of the network device, where the configuration information of the adjustment factor a may be carried in the RRC signaling.
  • the first terminal acquires the third threshold and the adjustment factor, and the first terminal uses the fifth threshold, that is, the third threshold adjusted by the adjustment factor, when preempting resources.
  • the configuration information of the fifth threshold may be determined according to the energy saving level of the first terminal.
  • the fifth threshold may have a mapping relationship with the energy saving level of the terminal.
  • the fifth threshold may be one or more exemplary, and the fifth threshold may be obtained according to Table 4 below.
  • Table 4 The mapping relationship between the energy saving level of the terminal and the resource preemption threshold
  • threshold 1 ⁇ threshold 2 ⁇ threshold 3.
  • the second preemption condition is based on the energy saving state of the first terminal, and can be configured as:
  • the RSRP measurement value satisfies the second preemption condition: the RSRP measurement value is greater than or equal to the sixth threshold.
  • the RSRP threshold is used to judge whether a resource needs to be excluded. If the RSRP measurement value is greater than or equal to the RSRP threshold, it is considered that the corresponding resource is a high-interference resource or an occupied resource or a resource that needs to be re-evaluated. In the process of preemption or re-evaluation, if the resource is determined to be occupied or needs to be re-evaluated, the first terminal releases the resource and re-selects the resource.
  • the RSRP measurement value satisfies the second preemption condition: the RSRP measurement value is greater than or equal to the seventh threshold.
  • the RSRP threshold is used to judge whether a resource needs to be excluded. If the RSRP measurement value is greater than or equal to the RSRP threshold, it is considered that the corresponding resource is a high-interference resource or an occupied resource or a resource that needs to be re-evaluated. In the process of preemption or re-evaluation, if the resource is determined to be occupied or needs to be re-evaluated, the first terminal releases the resource and re-selects the resource.
  • the first terminal acquires the sixth threshold and the seventh threshold, and when the first terminal is in the non-energy-saving mode or the non-DRX mode, the first terminal uses the sixth threshold, and when the first terminal is in the energy-saving mode or the DRX mode, The first terminal uses the seventh threshold.
  • the sixth threshold and the seventh threshold may be configured by those skilled in the art according to data transmission requirements, which are not specifically limited in this application.
  • the sixth threshold may be smaller than the seventh threshold.
  • the second preemption condition may be configured based on different power saving levels. That is to say, the RSRP measurement value satisfies the second preemption condition as follows:
  • the RSRP measurement value is greater than or equal to the eighth threshold.
  • the eighth threshold may have a corresponding relationship with the ratio of the active time or inactive time in the DRX cycle of the first terminal to the DRX cycle, or may have a corresponding relationship with the length of the DRX cycle of the first terminal.
  • the first terminal may acquire the adjustment factor b according to preconfigured information, or may acquire the adjustment factor b by receiving RRC signaling of the network device, where the configuration information of the adjustment factor b may be carried in the RRC signaling.
  • the first terminal acquires the sixth threshold and the adjustment factor, and the first terminal uses the eighth threshold, that is, the sixth threshold adjusted by the adjustment factor, when preempting resources or re-evaluating resources.
  • the configuration information of the eighth threshold may be determined according to the energy saving level of the first terminal.
  • the eighth threshold may have a mapping relationship with the energy saving level of the terminal.
  • a specific preemption threshold is configured for a terminal that has an energy-saving demand, so as to reduce the probability of preemption check of an energy-saving terminal, thereby ensuring energy-saving efficiency.
  • different preemption thresholds are set to ensure that terminals with higher energy-saving effect requirements have lower probability of preemption check, which can ensure the energy-saving effect and ensure the reliability of data transmission with higher priority. sex. Therefore, when the configured data priority threshold is lower, the data priority of the receiving SCI is more difficult to satisfy the preemption condition, and the probability of preemption check is lower.
  • This embodiment lowers the corresponding preemption threshold for the terminal that needs energy saving, ensures that the transmission data with higher priority can be preempted, ensures the reliability and transmission quality of data transmission, reduces the number of retransmissions, and improves the data transmission rate of the communication system. transmission efficiency.
  • the present application further provides a communication device, which can be used to perform the steps performed by the first terminal in the first embodiment of the present application.
  • the communication apparatus 800 includes: a receiving module 801 and a processing module 802 .
  • the receiving module 801 is configured to receive sidelink control information SCI, where the SCI includes energy saving indication information of the second terminal and first time-frequency resource information.
  • the processing module 802 is configured to determine the time-frequency resource for sideline transmission according to the SCI.
  • the power saving indication information is used to indicate that the second terminal is in at least one of the power saving mode, the non-power saving mode, the DRX mode of discontinuous reception, the non-DRX mode, or the power saving level of the second terminal, wherein , and the energy saving level is used to indicate the energy saving degree of the second terminal.
  • the energy saving level has a corresponding relationship with the ratio of the active time or inactive time in the DRX cycle configured by the second terminal to the DRX cycle, or, the energy saving level and the DRX cycle length configured by the second terminal There is a corresponding relationship.
  • the processing module 802 is specifically configured to: the energy saving indication information satisfies the first resource exclusion condition, which is a condition for excluding candidate resources overlapping with the first time-frequency resource from the candidate resource set.
  • the first resource exclusion condition includes: the energy saving indication information indicates that the second terminal is in the energy saving mode, or the second terminal is in the DRX mode, or the energy saving level of the second terminal meets a preset range.
  • the first resource exclusion condition further includes: the priority value included in the SCI is less than or equal to the first threshold, or the priority value included in the SCI is less than or equal to the second threshold and the priority value included in the SCI The value is greater than or equal to the third threshold.
  • the processing module 802 is further configured to: determine that satisfying the second resource exclusion condition is a condition for excluding candidate resources that overlap with the first time-frequency resource from the candidate resource set.
  • the second resource exclusion condition specifically includes: the RSRP measurement value of the reference signal received power is greater than or equal to the first RSRP threshold.
  • the second resource exclusion condition includes: the RSRP measurement value is greater than or is equal to the second RSRP threshold; if the energy saving indication information indicates that the second terminal is in a non-power-saving mode or the second terminal is in a non-DRX mode, the second resource exclusion condition includes: the RSRP measurement value is greater than or equal to the third RSRP threshold.
  • the energy-saving indication information is carried in at least one bit of the first-level SCI, or the energy-saving indication information is carried in at least one bit of the second-level SCI.
  • the first-level SCI or the second-level SCI is scrambled by the wireless network temporary identifier RNTI, and the RNTI is associated with the energy-saving indication information, or the first format of the second-level SCI is used to indicate the energy-saving mode or DRX mode, the second format of the second-level SCI is used to indicate a non-power saving mode or a non-DRX mode.
  • the present application further provides another communication apparatus, which can be used to perform the steps performed by the second terminal in the first embodiment of the present application.
  • the communication device 900 includes a sending module 901 for sending sidelink control information SCI, where the SCI includes energy saving indication information and first time-frequency resource information, wherein the energy saving indication information is used to indicate the second terminal In a power-saving state or a non-power-saving state.
  • the power saving indication information is used to indicate that the second terminal is in at least one of the power saving mode, the non-power saving mode, the DRX mode of discontinuous reception, the non-DRX mode, or the power saving level of the second terminal, wherein , and the energy saving level is used to indicate the energy saving degree of the second terminal.
  • the energy saving level has a corresponding relationship with the ratio of the active time or inactive time in the DRX cycle configured by the second terminal to the DRX cycle, or, the energy saving level and the DRX cycle length configured by the second terminal There is a corresponding relationship.
  • the energy-saving indication information is carried in at least one bit of the first-level SCI, or the energy-saving indication information is carried in at least one bit of the second-level SCI.
  • the present application further provides a communication device, which can be used to perform the steps performed by the first terminal in the second embodiment of the present application.
  • the communication device 1000 includes a receiving module 1001 and a processing module 1002 .
  • the receiving module 1001 is configured to receive configuration information, and the configuration information is used to indicate that the resource selection mode of the communication apparatus 1001 (the first terminal) is sensing or partial sensing.
  • the processing module 1002 is configured to determine that the second time-frequency resource is occupied or needs to be re-evaluated, wherein the first terminal is in a discontinuous reception DRX mode, a power saving mode, a non-DRX mode or a non-power saving mode.
  • the first period of time before the triggering moment of resource preemption or resource re-evaluation of the first terminal is the activation time.
  • the first time period is the activation time of the first terminal, including: after the first terminal transmits the sidelink data information or the first sidelink control information SCI, the first terminal starts the first timing
  • the duration of the first timer is the first time period.
  • the start time of the first period is the next symbol of the end symbol of the first SCI sent by the first terminal
  • the end time of the first period is N time slots before the next reserved time-frequency resource
  • the previous symbol of , or, or the end time of the first period is the previous symbol of the start symbol of the next reserved time-frequency resource, where N is determined according to the subcarrier interval.
  • the first time period is the activation time of the first terminal, and further includes: if the priority value included in the first SCI sent by the first terminal is lower than the first threshold, and/or the measured channel If the busy ratio CBR is greater than or equal to the second threshold, the first terminal determines that the first period is the activation time.
  • the processing module 1002 is further configured to determine that the second time-frequency resource does not belong to the first resource set, and the priority value included in the second SCI corresponding to the second time-frequency resource satisfies the first preemption condition, Then, the first terminal releases the second time-frequency resources, where the first resource set is a time-frequency resource set determined by the first terminal, and the second time-frequency resources are reserved resources of the first terminal.
  • the first preemption condition when the first terminal is in a non-power-saving mode or a non-DRX mode, the first preemption condition includes: the priority value included in the second SCI is less than or equal to the third threshold, and the second SCI includes The priority value of is less than or equal to the priority value contained in the first SCI.
  • the first preemption condition when the first terminal is in the power saving mode or the DRX mode, the first preemption condition includes: the priority value included in the second SCI is less than or equal to the fourth threshold, and the priority value included in the second SCI The priority value is less than or equal to the priority value contained in the first SCI.
  • the processing module 1002 is further configured to determine that the second preemption condition is satisfied, the first terminal determines that the second time-frequency resource does not belong to the first resource set, and releases the second time-frequency resource.
  • satisfying the second preemption condition is: the RSRP measurement value is greater than or equal to the fifth threshold; when the first terminal is in the power-saving mode or the DRX mode , the second preemption condition is: the RSRP measurement value is greater than or equal to the sixth threshold.
  • the processing module 1002 is further configured to perform resource selection, and determine time-frequency resources for sideline transmission from the candidate resource set, wherein, satisfying the second resource exclusion condition means that the first terminal will
  • the second time-frequency resource corresponding to the second SCI has a condition that overlapping candidate resources are excluded from the candidate resource set.
  • sending or receiving performed by the sending module or the receiving module described in the above embodiments of the present application may be performed under the control of a processing module (for example, a processor). Therefore, in the embodiments of the present application, the The actions of sending or receiving are described as being performed by a processing module (processor), and do not affect the understanding of the solution by those skilled in the art.
  • a processing module for example, a processor
  • FIG. 11 is another schematic structural diagram of a communication apparatus (terminal device) provided by an embodiment of the present application.
  • the terminal device 1100 includes a processor 1101 and a transceiver 1102 .
  • the terminal device 1100 further includes a memory 1103 .
  • the processor 1101, the transceiver 1102 and the memory 1103 can communicate with each other through an internal connection path to transmit control and/or data signals.
  • the memory 1103 is used to store computer programs, and the processor 1101 is used to retrieve data from the memory 1103.
  • the computer program is invoked and executed to control the transceiver 1102 to send and receive signals.
  • the terminal device 1100 may further include an antenna for transmitting the uplink data or the uplink control signaling output by the transceiver 1102 through wireless signals.
  • the above-mentioned processor 1101 and the memory 1103 can be combined into a processing device, and the processor 1101 is configured to execute the program codes stored in the memory 1103 to realize the above-mentioned functions.
  • the memory 1103 may also be integrated in the processor 1101 or independent of the processor 1101 .
  • the terminal device 1100 may correspond to various embodiments of the methods according to the embodiments of this application.
  • each unit in the terminal device 1100 and the above-mentioned other operations and/or functions are respectively for realizing the corresponding flow in each embodiment of the method.
  • the above-mentioned processor 1101 may be used to perform one or more execution actions implemented by the terminal device described in the foregoing method embodiments, and the transceiver 1102 may be used to execute one or more of the terminal devices described in the foregoing method embodiments.
  • the action of sending or receiving please refer to the descriptions in the foregoing method embodiments, which will not be repeated here.
  • the above-mentioned terminal device 1100 may further include a power supply for providing power to various devices or circuits in the terminal device.
  • the terminal device 1100 may further include an input unit, a sensor, a display unit, an audio circuit, a camera, a speaker, a microphone, and the like.
  • the terminal equipment in each of the above apparatus embodiments may completely correspond to the first terminal or the second terminal in the method embodiments, and corresponding steps are performed by corresponding modules or units.
  • the above The receiving module may be an interface circuit used by the chip to receive signals from other chips or devices.
  • the above unit for sending is an interface circuit of the device, which is used to send signals to other devices.
  • the above-mentioned sending module is used by the chip to send signals to other chips or devices. signal interface circuit.
  • processor in the embodiment of the present application may be a CPU, and the processor may also be other general-purpose processors, digital signal processing (digital signal processing, DSP), application specific integrated circuit (ASIC), field Field Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • DSP digital signal processing
  • ASIC application specific integrated circuit
  • FPGA field Field Programmable Gate Array
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically programmable Erase programmable read-only memory (electrically EPROM, EEPROM) or flash memory.
  • Volatile memory may be random access memory (RAM), which acts as an external cache.
  • RAM random access memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • enhanced SDRAM enhanced synchronous dynamic random access memory
  • SLDRAM synchronous connection dynamic random access memory Fetch memory
  • direct memory bus random access memory direct rambus RAM, DR RAM
  • An embodiment of the present application further provides a communication system, and the communication system includes: any one of the first terminal and the second terminal provided in the above embodiments of the present application.
  • Embodiments of the present application further provide a computer-readable medium for storing computer program codes, where the computer program includes instructions for executing the network device in the above method and the method executed in the terminal device.
  • the readable medium may be a ROM or a RAM, which is not limited in this embodiment of the present application.
  • the present application also provides a computer program product, the computer program product includes instructions, when the instructions are executed, so that the terminal device and the network device respectively perform the operations corresponding to the above method of the terminal device and the network device.
  • Embodiments of the present application further provide a system chip, which includes: a processing unit and a communication unit, where the processing unit may be, for example, a processor, and the communication unit may be, for example, an input/output interface, a pin, or a circuit.
  • the processing unit can execute computer instructions, so that the communication apparatus to which the chip is applied executes the operations of the terminal device and the network device in the methods provided in the foregoing embodiments of the present application.
  • any of the communication apparatuses provided in the foregoing embodiments of the present application may include the system chip.
  • the computer instructions are stored in a storage unit.
  • the storage unit is a storage unit in the chip, such as a register, a cache, etc.
  • the storage unit can also be a storage unit located outside the chip in the communication device, such as a ROM or a storage unit that can store static information and instructions.
  • ROM read-only memory
  • RAM random access memory
  • the processor mentioned in any one of the above may be a CPU, a microprocessor, an ASIC, or one or more integrated circuits used to control the program execution of the above-mentioned method for transmitting feedback information.
  • the processing unit and the storage unit can be decoupled, respectively disposed on different physical devices, and connected in a wired or wireless manner to implement the respective functions of the processing unit and the storage unit, so as to support the system chip to implement the above embodiments various functions in .
  • the processing unit and the memory may also be coupled on the same device.
  • the processor in the embodiments of the present application may be a CPU, and the processor may also be other general-purpose processors, DSP, ASIC, FPGA or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the size of the sequence numbers of the above-mentioned processes does not mean the sequence of execution, and the execution sequence of each process should be determined by its functions and internal logic, and should not be dealt with in the embodiments of the present application. implementation constitutes any limitation.
  • the disclosed system, communication 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 in essence, or the part that contributes to the prior art or the part of the technical solution.
  • the computer software product is stored in a storage medium, including Several instructions are used to cause a computer device (which may be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present application.

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Abstract

本申请提供一种信息传输方法及装置，涉及通信技术领域，用于解决节能模式下终端设备之间的资源选择冲突，提高侧行传输的资源选择可靠性，提高侧行链路的通信质量。该方法包括：第一终端接收侧行链路控制信息SCI，SCI包括第二终端的节能指示信息以及第一时频资源信息；第一终端根据SCI确定用于侧行传输的时频资源。

Description

一种信息传输方法及装置 技术领域
本申请涉及通信技术领域，尤其涉及一种信息传输方法及装置。
背景技术
随着无线通信技术的发展，如今，对第五代通信技术(the 5th Generation Mobile Communication Technology，5G)即新无线电(New Radio，NR)系统提出了更高的数据传输要求。在NR中，用户设备(User Equipment，UE)之间的通信称之为侧行链路(sidelink，SL)，其中，UE可以包括终端设备、智能手机、车用无线通信系统中的车载终端、路边单元等电子设备，其中，车用无线通信系统可以称为vehicle to X，简称为V2X。NR的侧行链路的资源分配方案包括模式(Mode)1和Mode 2。其中，Mode 1是由基站进行资源调度，而Mode 2是由UE自主进行资源选择，具体的，UE可以在一个配置的资源池中通过感知(Sensing过程)确定哪些资源未被其他UE占用，然后选择一些合适的资源进行SL传输；资源选择后，UE就会在这些资源上发送或者重传数据，直到触发了资源重选。
但是，对于具有节能功能的UE，如UE被配置了非连续接收(Discontinuous Reception，DRX)模式，即UE在一个DRX周期内部分时间段(ON duration)处于激活状态，部分时间段(OFF duration)处于非激活状态。当UE处于激活状态时，可以监听控制信令，如监听物理Sidelink控制信道(Pysical Sidelink Control Channel，PSCCH)，其中，PSCCH可以用于传输Sidelink控制信息(Sidelink Control information，SCI)。当UE处于非激活状态(休眠状态)，则不需要监听控制信令，以达成节能的目的。
因此，对于有节能需求的UE，当UE1处于DRX OFF duration下，由于UE1没有监听到进行资源选择的其他UE如UE2的调度信令SCI，而不能得知某些资源已被其他UE抢占。因此，UE1在进行资源选择时候，可能会与其他UE发生资源选择冲突，从而降低了侧行链路的通信质量。
发明内容
本申请实施例提供一种信息传输方法和装置，用于解决DRX模式下多个用户设备之间的资源选择冲突，提高SL资源选择的可靠性，从而提高侧行链路的通信质量。
第一方面，提供一种信息传输方法，应用于第一终端，该方法包括：接收侧行链路控制信息SCI，所述SCI包括第二终端的节能指示信息以及第一时频资源信息；根据所述SCI确定用于侧行传输的时频资源。
上述技术方案中，通过在SCI中携带用于指示终端处于DRX模式或者节能模式的节能指示信息，使得别的终端在进行资源选择的过程中，可以根据节能指示信息进行资源的确定，以降低抢占处于节能模式或DRX模式或预设范围的节能等级的终端的预留资源的概率，提高SL资源选择的可靠性，从而提高侧行链路的通信质量。
在一种可能的设计方式中，节能指示信息用于指示第二终端处于节能模式、非节 能模式、非连续接收的DRX模式、非DRX模式或者第二终端的节能等级中的至少一种，其中，节能等级用于指示第二终端的节能程度。
上述可能的实现方式中，节能指示信息可以用于指示第二终端的节能状态或者节能等级的信息，从而可以使其他终端根据节能指示信息有选择性的进行资源选择，以保证资源选择的可靠性，减少资源选择的冲突。
在一种可能的设计方式中，节能等级与第二终端配置的DRX周期内激活时间或者非激活时间在DRX周期中的占比有对应关系，或者，节能等级与第二终端配置的DRX周期长度有对应关系。
上述可能的实现方式中，可以根据第二终端配置的DRX周期内激活时间或者非激活时间在DRX周期中的占比，或者DRX周期长度的不同划分不同的节能等级，从而提高资源选择进行判断的灵活性。
在一种可能的设计方式中，根据SCI确定用于侧行传输的时频资源，具体包括：节能指示信息满足第一资源排除条件，为将与所述第一时频资源有重叠的候选资源从候选资源集合中排除的一个条件。
在一种可能的设计方式中，第一资源排除条件包括：节能指示信息指示第二终端处于节能模式、或者第二终端处于DRX模式、或者第二终端的节能等级满足预设范围。
上述可能的实现方式中，第一终端可以根据第二终端的节能指示信息有选择性的资源选择，以尽量保证节能终端的资源选择可靠性，减少资源选择的冲突。
上述可能的实现方式中，在一种可能的设计方式中，第一资源排除条件还包括：SCI包含的优先级值小于或者等于第一阈值，或者，SCI包含的优先级值小于或者等于第二阈值且SCI包含的优先级值大于或者等于第三阈值。
上述可能的实现方式中，第一终端不向数据优先级较高的第二终端进行资源抢占，以满足第二终端数据传输的可靠性。从而终端可以根据有节能需求终端发送的数据的优先级确定是否为与节能终端的预留资源有重叠的候选资源进行排除，保证了节能终端传输高优先级业务的可靠性和传输质量，减少了其数据传输的重传次数，提高通信系统的数据传输性能。
在一种可能的设计方式中，根据SCI确定用于侧行传输的时频资源，还包括：满足第二资源排除条件，为将与第一时频资源有重叠的候选资源从候选资源集合中排除的一个条件。
在一种可能的设计方式中，第二资源排除条件具体包括：参考信号接收功率RSRP测量值大于或者等于第一RSRP阈值。
在一种可能的设计方式中，若节能指示信息指示第二终端为节能模式、或者第二终端处于DRX模式、或者节能等级满足预设范围，则第二资源排除条件包括：RSRP测量值大于或者等于第二RSRP阈值；若节能指示信息为第二终端为非节能模式、或者第二终端处于非DRX模式，则第二资源排除条件包括：RSRP测量值大于或者等于第三RSRP阈值。
上述可能的实现方式中，通过对有节能需求的终端降低RSRP阈值的方式，即配置第二RSRP阈值，减少有节能需求UE对应的候选资源成被抢占的概率，有效保证了节能UE的资源的低干扰，避免处于节能模式的UE资源被抢而不知，从而保证了 节能UE的数据传输的可靠性和服务质量，减少了其数据传输的重传次数，提高通信系统的运行效率。
在一种可能的设计方式中，节能指示信息包括第二终端的节能等级，则第二资源排除条件包括：RSRP测量值大于或者等于第二终端的节能等级对应的RSRP阈值。
上述可能的实现方式中，通过对不同的节能等级配置对应的不同RSRP阈值，从而提高了资源抢占判断的灵活性，以满足不同场景的资源选择需求，提高通信系统的运行效率。
在一种可能的设计方式中，节能指示信息承载于第一级SCI的至少一个比特位，或者，节能指示信息承载于第二级SCI的至少一个比特位。
上述可能的实现方式中，节能指示信息可以承载于第一级SCI或者第二级SCI，以在资源选择过程中指示其他终端尽量避免资源选择的冲突，指示方式灵活，提高侧行传输的可靠性。
在一种可能的设计方式中，第一级SCI或第二级SCI被无线网络临时标识RNTI加扰，RNTI与节能指示信息相关联，或者，第二级SCI的第一格式用于指示节能模式或DRX模式，第二级SCI的第二格式用于指示非节能模式或非DRX模式。
上述可能的实现方式中，提高节能指示信息的指示方式的灵活性，从而在资源选择过程中指示其他终端尽量避免资源选择的冲突，指示方式灵活，提高侧行传输的可靠性。
第二方面，提供一种信息传输方法，应用于第二终端，该方法还包括：发送侧行链路控制信息SCI，SCI包括节能指示信息以及第一时频资源信息，其中，节能指示信息用于表示第二终端处于节能状态或者非节能状态。
在一种可能的设计方式中，节能指示信息用于指示第二终端处于节能模式、非节能模式、非连续接收的DRX模式、非DRX模式或者第二终端的节能等级中的至少一种，其中，节能等级用于指示第二终端的节能程度。
在一种可能的设计方式中，节能等级与第二终端配置的DRX周期内激活时间或者非激活时间在DRX周期中的占比有对应关系，或者，节能等级与第二终端配置的DRX周期长度有对应关系。
在一种可能的设计方式中，节能指示信息承载于第一级SCI的至少一个比特位，或者，节能指示信息承载于第二级SCI的至少一个比特位。
在一种可能的设计方式中，第一级SCI或第二级SCI被无线网络临时标识RNTI加扰，RNTI与节能指示信息相关联，或者，第二级SCI的第一格式用于指示节能模式或DRX模式，第二级SCI的第二格式用于指示非节能模式或非DRX模式。
第三方面，提供一种信息传输方法，应用于第一终端，该方法包括：接收配置信息，配置信息用于指示第一终端的资源选择方式为感知或部分感知；确定第二时频资源被占用或者需要重评估，其中，第一终端处于非连续接收DRX模式、节能模式、非DRX模式或非节能模式。
在一种可能的设计方式中，第一终端确定第二时频资源被占用或者需要重评估之前，该方法还包括：第一终端根据RRC信令确定使能资源抢占或者资源重评估。
在一种可能的设计方式中，第一终端确定第二时频资源被占用或者需要重评估之 前，该方法还包括：第一终端根据接收到的侧行链路控制信息SCI对应的数据的优先级满足预设条件，确定使能资源抢占或者资源重评估。
在一种可能的设计方式中，第一终端确定第二时频资源被占用或者需要重评估之前，该方法还包括：第一终端根据测量得到的信道忙碌比CBR满足预设条件，确定使能资源抢占或者资源重评估。
上述可能的实现方式中，终端可以根据确定是否真正使能资源抢占或者资源重评估来保证节能效果。具体的，对于传输数据优先级较高的情况，可以使能资源抢占或者资源重评估，以保证优先级较高的数据传输的可靠性和传输质量，提升通信系统的数据传输性能。另外，根据CBR测量值确定是否真正使能资源抢占或者资源重评估，可以综合判断在当前信道拥塞严重的时候，发生资源抢占的概率较高，此时保证节能效果会导致传输的可靠性无法保证，继而导致数据重传频繁，不利于通信系统的数据传输。因此，终端可以牺牲节能效果，而使能资源抢占以优先保证数据传输的可靠性和服务质量，进而减少重传的次数。
在一种可能的设计方式中，若第一终端处于节能模式或者DRX模式，第一终端在资源抢占或者资源重评估触发时刻之前的第一时段为激活时间。
上述可能的实现方式中，终端是否处于节能模式或者DRX模式不会影响其进行资源抢占检查或者资源重评估，从而可以保证处于节能模式的终端的抢占检查过程可以正常进行，从而被抢资源的终端可以重选资源以获得更加低干扰的时频资源，增加数据传输的可靠性和传输质量，减少了其重传次数，提高了通信系统的数据传输效率。
在一种可能的设计方式中，第一终端在第一时段为激活时间，包括：在第一终端传输侧行数据信息或第一侧行链路控制信息SCI之后，第一终端开启第一定时器，第一定时器的时长为第一时段。
上述可能的实现方式中，通过引入定时器来管理资源抢占的过程，使得有节能需求的终端可以进行资源抢占检查，以提高节能终端的数据传输可靠性和传输质量，减少了其重传次数，提高了通信系统的数据传输效率。
在一种可能的设计方式中，第一时段的开始时间为第一终端发送第一SCI的结束符号的下一个符号，第一时段的结束时间为下一个预留时频资源之前N个时隙的前一个符号，或者，或者第一时段的结束时间为下一个预留时频资源的开始符号的前一个符号，其中，N是根据子载波间隔确定的。
在一种可能的设计方式中，第一终端在第一时段为激活时间，还包括：若第一终端发送的第一SCI包含的优先级值低于第一门限，和/或测量得到的信道忙碌比CBR大于或者等于第二门限，则第一终端确定第一时段为激活时间。
上述可能的实现方式中，DRX模式下的终端可以结合数据优先级和CBR测量值，以确定是否激活进行资源抢占检查或者资源冲评估，也就是某些条件下为保证资源抢占检查或者资源冲评估，可以不考虑终端的节能需求，从而提高数据传输可靠性和传输质量。
在一种可能的设计方式中，确定第二时频资源被占用或者需要重评估之前，方法还包括：确定第二时频资源不属于第一资源集合，且第二时频资源对应的第二SCI包含的优先级值满足第一抢占条件，则第一终端释放第二时频资源，其中，第一资源集 合为第一终端确定的时频资源集合，第二时频资源为第一终端的预留资源。
在一种可能的设计方式中，当第一终端处于非节能模式或者非DRX模式时，第一抢占条件包括：第二SCI包含的优先级值小于或者等于第三门限，并且，第二SCI包含的优先级值小于或者等于第一SCI包含的优先级值。
在一种可能的设计方式中，当第一终端处于节能模式或者DRX模式时，第一抢占条件包括：第二SCI包含的优先级值小于或者等于第四门限，并且，第二SCI包含的优先级值小于或者等于第一SCI包含的优先级值。
上述可能的实现方式中，通过对有节能需求的终端配置特定的抢占阈值，以降低节能终端的抢占检查的概率，从而保证节能效率。对于不同节能等级的终端，设置不同的抢占阈值，保证了节能效果要求越高的终端，进行抢占检查的概率越低，越能保证其节能效果，同时能保证较高优先级的数据传输的可靠性。
在一种可能的设计方式中，第三门限小于第四门限。
上述可能的实现方式中，对于有节能需求的终端，降低对应的抢占阈值，保证其优先级较高的传输数据可以进行抢占检查，保证数据传输的可靠性和传输质量，减少其重传次数，提高通信系统的数据传输效率。
在一种可能的设计方式中，确定第二时频资源被占用或者需要重评估，方法还包括：满足第二抢占条件，第一终端确定第二时频资源不属于第一资源集合，释放第二时频资源。
在一种可能的设计方式中，当第一终端处于非节能模式或者非DRX模式时，第二抢占条件为：RSRP测量值大于或者等于第五门限；当第一终端处于节能模式或者DRX模式时，第二抢占条件为：RSRP测量值大于或者等于第六门限。
上述可能的实现方式中，对于不同节能需求的终端，配置对应的不同的RSRP抢占阈值，从而提高资源抢占的灵活性，提高通信系统的数据传输性能。
在一种可能的设计方式中，当第一终端处于节能模式或者DRX模式时，第二SCI包含的优先级满足第一抢占条件包括：第二SCI包含的优先级值小于或者等于第三门限，并且，第二SCI包含的优先级值小于或者等于第一SCI包含的优先级值。
在一种可能的设计方式中，第三门限与第一终端的DRX周期内激活时间或者非激活时间在DRX周期中的占比有对应关系，或者，与第一终端的DRX周期长度有对应关系。
上述可能的实现方式中，对于不同节能需求的终端，配置对应的不同的优先级抢占阈值，从而提高资源抢占的灵活性，提高通信系统的数据传输性能。
在一种可能的设计方式中，该方法还包括：第一终端进行资源选择，从候选资源集合中确定用于侧行传输的时频资源，其中，满足第二资源排除条件，为第一终端将与第二SCI对应的第二时频资源有重叠的候选资源从候选资源集合中排除的一个条件。
第四方面，提供一种通信装置，该通信装置包括接收模块和处理模块，其中，所述接收模块用于接收侧行链路控制信息SCI，SCI包括第二终端的节能指示信息以及第一时频资源信息；所述处理模块用于根据所述SCI确定用于侧行传输的时频资源。
在一种可能的设计方式中，节能指示信息用于指示所述第二终端处于节能模式、非节能模式、非连续接收的DRX模式、非DRX模式或者所述第二终端的节能等级中 的至少一种，其中，所述节能等级用于指示所述第二终端的节能程度。
在一种可能的设计方式中，节能等级与所述第二终端配置的DRX周期内激活时间或者非激活时间在所述DRX周期中的占比有对应关系，或者，所述节能等级与所述第二终端配置的DRX周期长度有对应关系。
在一种可能的设计方式中，所述处理模块具体用于：节能指示信息满足第一资源排除条件，为将与所述第一时频资源有重叠的候选资源从候选资源集合中排除的一个条件。
在一种可能的设计方式中，第一资源排除条件包括：所述节能指示信息指示所述第二终端处于节能模式、或者所述第二终端处于DRX模式、或者所述第二终端的节能等级满足预设范围。
在一种可能的设计方式中，第一资源排除条件还包括：所述SCI包含的优先级值小于或者等于第一阈值，或者，所述SCI包含的优先级值小于或者等于第二阈值且所述SCI包含的优先级值大于或者等于第三阈值。
在一种可能的设计方式中，所述处理模块还用于：确定满足第二资源排除条件为将与第一时频资源有重叠的候选资源从候选资源集合中排除的一个条件。
在一种可能的设计方式中，第二资源排除条件具体包括：参考信号接收功率RSRP测量值大于或者等于第一RSRP阈值。
在一种可能的设计方式中，若所述节能指示信息为所述第二终端为节能模式、或者所述第二终端处于DRX模式、或者节能等级满足预设范围，则所述第二资源排除条件包括：所述RSRP测量值大于或者等于第二RSRP阈值；若所述节能指示信息为所述第二终端为非节能模式、或者所述第二终端处于非DRX模式，则所述第二资源排除条件包括：所述RSRP测量值大于或者等于第三RSRP阈值。
在一种可能的设计方式中，节能指示信息承载于第一级SCI的至少一个比特位，或者，所述节能指示信息承载于第二级SCI的至少一个比特位。
在一种可能的设计方式中，第一级SCI或第二级SCI被无线网络临时标识RNTI加扰，所述RNTI与所述节能指示信息相关联，或者，所述第二级SCI的第一格式用于指示节能模式或DRX模式，第二级SCI的第二格式用于指示非节能模式或非DRX模式。
第五方面，提供一种通信装置，所述通信装置包括发送模块，用于发送侧行链路控制信息SCI，所述SCI包括节能指示信息以及第一时频资源信息，其中，所述节能指示信息用于表示所述第二终端处于节能状态或者非节能状态。
在一种可能的设计方式中，节能指示信息用于指示所述第二终端处于节能模式、非节能模式、非连续接收的DRX模式、非DRX模式或者所述第二终端的节能等级中的至少一种，其中，所述节能等级用于指示所述第二终端的节能程度。
在一种可能的设计方式中，节能等级与所述第二终端配置的DRX周期内激活时间或者非激活时间在所述DRX周期中的占比有对应关系，或者，所述节能等级与所述第二终端配置的DRX周期长度有对应关系。
在一种可能的设计方式中，节能指示信息承载于第一级SCI的至少一个比特位，或者，所述节能指示信息承载于第二级SCI的至少一个比特位。
第六方面，提供一种通信装置，所述通信装置包括接收模块和处理模块，所述接收模块用于接收配置信息，所述配置信息用于指示所述第一终端的资源选择方式为感知或部分感知；处理模块用于确定第二时频资源被占用或者需要重评估，其中，所述第一终端处于非连续接收DRX模式、节能模式、非DRX模式或非节能模式。
在一种可能的设计方式中，若所述第一终端处于节能模式或者DRX模式，所述第一终端在资源抢占或者资源重评估触发时刻之前的第一时段为激活时间。
在一种可能的设计方式中，所述第一终端在第一时段为激活时间，包括：在所述第一终端传输侧行数据信息或第一侧行链路控制信息SCI之后，所述第一终端开启第一定时器，所述第一定时器的时长为第一时段。
在一种可能的设计方式中，第一时段的开始时间为所述第一终端发送第一SCI的结束符号的下一个符号，所述第一时段的结束时间为下一个预留时频资源之前N个时隙的前一个符号，或者，或者所述第一时段的结束时间为下一个预留时频资源的开始符号的前一个符号，其中，所述N是根据子载波间隔确定的。
在一种可能的设计方式中，所述第一终端在第一时段为激活时间，还包括：若所述第一终端发送的第一SCI包含的优先级值低于第一门限，和/或测量得到的信道忙碌比CBR大于或者等于第二门限，则所述第一终端确定第一时段为激活时间。
在一种可能的设计方式中，处理模块还用于确定所述第二时频资源不属于第一资源集合，且所述第二时频资源对应的第二SCI包含的优先级值满足第一抢占条件，则所述第一终端释放所述第二时频资源，其中，所述第一资源集合为所述第一终端确定的时频资源集合，所述第二时频资源为所述第一终端的预留资源。
在一种可能的设计方式中，当所述第一终端处于非节能模式或者非DRX模式时，所述第一抢占条件包括：所述第二SCI包含的优先级值小于或者等于第三门限，并且，所述第二SCI包含的优先级值小于或者等于所述第一SCI包含的优先级值。
在一种可能的设计方式中，当所述第一终端处于节能模式或者DRX模式时，所述第一抢占条件包括：所述第二SCI包含的优先级值小于或者等于第四门限，并且，所述第二SCI包含的优先级值小于或者等于所述第一SCI包含的优先级值。
在一种可能的设计方式中，处理模块还用于确定满足第二抢占条件，所述第一终端确定所述第二时频资源不属于第一资源集合，释放所述第二时频资源。
在一种可能的设计方式中，当所述第一终端处于非节能模式或者非DRX模式时，所述满足第二抢占条件为：所述RSRP测量值大于或者等于第五门限；当所述第一终端处于节能模式或者DRX模式时，所述第二抢占条件为：所述RSRP测量值大于或者等于第六门限。
在一种可能的设计方式中，所述处理模块还用于进行资源选择，从候选资源集合中确定用于侧行传输的时频资源，其中，满足第二资源排除条件，为所述第一终端将与第二SCI对应的第二时频资源有重叠的候选资源从所述候选资源集合中排除的一个条件。
第七方面，提供一种通信装置，包括处理器，所述处理器与存储器耦合；存储器，用于存储计算机程序或指令；处理器，用于执行所述存储器中存储的计算机程序或指令，以使得所述通信装置用于执行如上述第一方面中任一项所述的方法。
第八方面，提供一种通信装置，包括处理器，所述处理器与存储器耦合；存储器，用于存储计算机程序或指令；处理器，用于执行所述存储器中存储的计算机程序或指令，以使得所述通信装置用于执行如上述第二方面中任一项所述的方法。
第九方面，提供一种通信装置，包括处理器，所述处理器与存储器耦合；存储器，用于存储计算机程序或指令；处理器，用于执行所述存储器中存储的计算机程序或指令，以使得所述通信装置用于执行如上述第三方面中任一项所述的方法。
第十方面，提供一种计算机可读存储介质，包括程序或指令，当所述程序或指令被处理器运行时，使得所述计算机执行如上述第一方面中任一种可能的实施方式。
第十一方面，提供一种计算机可读存储介质，包括程序或指令，当所述程序或指令被处理器运行时，使得所述计算机执行如上述第二方面中任一种可能的实施方式。
第十二方面，提供一种计算机可读存储介质，包括程序或指令，当所述程序或指令被处理器运行时，使得所述计算机执行如上述第三方面中任一种可能的实施方式。
第十三方面，提供一种计算机程序产品，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如上述第一方面中任一种可能的实施方式。
第十四方面，提供一种计算机程序产品，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如上述第二方面中任一种可能的实施方式。
第十五方面，提供一种计算机程序产品，当所述计算机程序产品在计算机上运行时，使得所述计算机执行如上述第三方面中任一种可能的实施方式。
第十六方面，提供一种通信系统，其特征在于，包括如上述第四方面或第五方面任一项所述的通信装置和上述第六方面任一项所述的通信装置。
可以理解地，上述提供的任一种信息传输方法、通信装置、通信系统或计算机可读存储介质，均可以由上文所提供的对应的方法来实现，因此，其所能达到的有益效果可参考上文所提供的对应的方法中有益效果，此处不再赘述。
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图1为本申请实施例提供的通信系统的示意图；
图2为本申请实施例提供的确定候选时频资源集合的示意图；
图3为本申请实施例提供的一种信息传输的流程示意图；
图4为本申请实施例提供的资源抢占的示意图；
图5为本申请实施例提供的另一种信息传输的流程示意图；
图6为本申请实施例提供的实施方式中第一终端在资源抢占或者资源重评估触发时刻之前的第一时段为激活时间的示意图；
图7为本申请实施例提供的第一时段与非激活时间重叠的示意图；
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具体实施方式
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为了便于理解本申请，现对本申请实施例涉及到的相关概念进行描述。
5G通信技术是最新一代蜂窝移动通信技术，是第四代移动通信技术、第三代移动通信技术和第二代移动通信技术后的延伸。5G的性能目标是高数据速率、减少延迟、节省能源、降低成本、提高系统容量和大规模设备连接。
用户设备(User Equipment，UE)，也可称之为用户终端(User Terminal，UT)、移动终端(Mobile Terminal，MT)、移动台(Mobile Station，MS)或终端设备等，可以经无线接入网(RadioAccess Network，RAN)与一个或多个核心网进行通信。例如，用户设备可以是移动电话(或称为“蜂窝”电话)或具有移动终端的计算机等，例如，用户设备还可以是便携式、袖珍式、手持式、计算机内置的或者车载的移动装置，它们与无线接入网交换语音和/或数据。
在通信小区中，网络设备和终端设备可以通过空口资源进行数据传输。空口资源可以包括时域资源和频域资源，时域资源和频域资源还可以称为时频资源。频域资源可以位于设置的频率范围，频率范围还可以称为频带(band)或频段，频域资源的宽度可以称为带宽(Band Width，BW)。
时频资源具体可以是资源栅格，包括时域和频域，比如时域单位可以为符号(symbol)，频域单位可以为子载波(subcarrier)，资源栅格中最小的资源单位可以称为资源单元(Resource Element，RE)。一个资源块(Resource Block，RB)在频域可以包括一个或多个子载波，比如可以是12个子载波。一个时隙在时域可以包括一个或多个符号，例如，在5G通信中，一个时隙可以包括14个符号(普通循环前缀(CP，Cyclic Prefix)下)或者12个符号(扩展循环前缀下)。
在5G通信技术中，引入了多种帧结构(即可以包括多种子载波间隔)，因此定义资源栅格的时候可以是针对每种帧结构参数定义一个资源栅格。本申请实施例对具体的每种帧结构的定义方式不做具体限定，其并不对本申请的技术方案构成限制。
网络设备和终端设备进行数据传输时，网络设备可以通过配置信息从资源格中为终端设备分配数据信道，如，配置物理下行共享信道(Physical Downlink Shared Channel，PDSCH)，物理上行共享信道(Physical Uplink Shared Channel，PUSCH)的频域资源和/或时域资源。比如该配置信息可以指示数据信道所映射至的符号和/或RB，网络设备和终端设备可以在该分配的时频资源通过数据信道进行数据传输。如下行数据传输和上行数据传输，下行数据传输可以指基站向终端设备发送数据，上行数据传输可以是指终端设备向网络设备发送数据。
其中，数据可以是广义的数据，比如可以是用户数据，也可以是系统信息，广播信息，或其他的信息等。
另外，通信系统中涉及的终端设备之间进行的通信被广泛称为侧行链路(slidelink，SL)通信。例如，侧行链路可以包括车用无线通信系统中的侧行传输，或者设备到设备(Device to Device，D2D)通信系统中的侧行传输。
其中，终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、车载终端、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、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端、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)中的终端设备等等。本申请的实施例对应用场景不做限定。
本申请中由终端设备实现的方法和步骤，也可以由可用于终端设备的部件(例如芯片或者电路)等实现。本申请中将前述终端设备及可设置于前述终端设备的部件(例如芯片或者电路)统称为终端设备。
在本申请实施例中，终端设备或网络设备可以包括硬件层、运行在硬件层之上的操作系统层，以及运行在操作系统层上的应用层。该硬件层包括中央处理器(central processing unit，CPU)、内存管理单元(memory management unit，MMU)和内存(也称为主存)等硬件。该操作系统可以是任意一种或多种通过进程(process)实现业务处理的计算机操作系统，例如，Linux操作系统、Unix操作系统、Android操作系统、iOS操作系统或windows操作系统等。该应用层包含浏览器、通讯录、文字处理软件、即时通信软件等应用。并且，本申请实施例并未对本申请实施例提供的方法的执行主体的具体结构特别限定，只要能够通过运行记录有本申请实施例的提供的方法的代码的程序，以根据本申请实施例提供的方法进行通信即可，例如，本申请实施例提供的方法的执行主体可以是终端设备或网络设备，或者，是终端设备或网络设备中能够调用程序并执行程序的功能模块。
图1示出了本申请实施例应用的通信系统示例，包括V2X通信系统和D2D通信系统等侧行通信系统。如图1所示，侧行通信系统可以包括：车载终端与车载终端(Vehicle to Vehicle，V2V)之间的SL通信，车载终端与路边基础设施(Vehicle to Infrastructure，V2I)之间的SL通信，车载终端与行人之间的SL通信(Vehicle to Pedestrian，V2P)，有节能需求的终端设备之间的通信，行人与车载终端之间的通信，行人与行人之间的通信，以及车载终端与网络设备(Vehicle to Network，V2N)之间的上下行链路的通信等。D2D通信系统包括终端1与终端2之间的SL通信。
其中，NR SL的资源分配方案包括Mode 1和Mode 2。其中，Mode 1是由网络设备根据终端的侧行传输需求为终端进行资源调度的，而Mode 2是由终端自主进行资源选择。
Mode 2终端的资源选择过程支持资源感知、资源抢占或者资源重选的过程。资源感知的过程中终端可以基于解调其他终端的SCI或者其他Sidelink测量结果，解调SCI以获取Sidelink上资源使用的情况，结合基于其他测量结果如Sidelink对应的参考信号接收功率(Reference Signal Receiving Power，RSRP)值进行判断，确定用于侧行传输的时频资源。资源抢占或者资源重选的过程可以基于上述感知的资源选择过程的结果来决定或者更新用于Sidelink传输的资源。
下面结合附图介绍Mode 2的资源选择过程。
1、感知(Sensing)的资源选择或重选过程
Step1：终端确定资源选择窗和候选时频资源集合。
如终端在时隙n触发了资源选择的过程，则可以确定资源选择窗为时间区间[n+T1，n+T2]。
其中，T1的取值满足
Figure PCTCN2020121704-appb-000001
Figure PCTCN2020121704-appb-000002
是根据子载波间隔(subcarrier spacing)确定的，
Figure PCTCN2020121704-appb-000003
的单位为时隙。SL的子载波间隔不同，则相应的
Figure PCTCN2020121704-appb-000004
取值不同，可以根据下表1获取
Figure PCTCN2020121704-appb-000005
的取值。T2的取值满足T 2min≤T1≤剩余的数据包时延预算(Packet Delay Budget，PDB)，其中，T 2min的取值和数据的优先级值相关联，T 2min可以为1，5，10，20个时隙。
表1根据子载波间隔确定
Figure PCTCN2020121704-appb-000006
值
Figure PCTCN2020121704-appb-000007
示例性的，数据的优先级值为整数1～8，数值越小代表数据优先级级别越高。则不同的优先级值可以对应不同的T 2min。
其中，Mode 2 UE的Sensing过程可以是由UE的高层触发的。例如，Sensing的触发过程具体可以是UE的应用层根据UE发送业务的需求，逐层发送请求至物理层。如媒体访问控制(Media Access Control，MAC)层向物理层触发Sensing过程，以要求UE的物理层确定一个候选资源集合。从而UE的高层可以在这个候选资源集合中确定用于传输PSCCH或者PSSCH的时频资源。
UE的高层触发Sensing过程的时候，可以提供PSSCH或PSCCH传输的下列参数：进行资源选择的资源池、PSSCH或PSCCH传输数据的优先级、剩余的数据包时延预算(Packet Delay Budget，PDB)以及用于PSCCH或PSSCH传输的子信道个数。在一种实施方式中，UE的高层提供的参数还可以包括资源预留区间，其单位可以是毫秒或者是时隙。
另外，UE需要根据资源池确定在资源选择窗下的候选时频资源集合，其中，候选时频资源集合包括多个候选的时隙资源。如一个候选的时隙资源对应于UE在资源池的一个时隙下包括的任意L个连续子信道集合，即单个时隙资源可以记为R x，y，R x，y表示为在时隙y下的连续L个子信道的集合，其中子信道的索引分别为x+j，其中，j可取值为0，1，......L-1。
示例性的，确定候选时频资源集合的过程可以如图2所示的，L为2，该资源池对应的子信道个数为6，其子信道索引分别为(0，1，2，3，4，5)，则可以确定候选时频资源集合中包括5个资源，包括索引为(0，1)，(1，2)，(2，3)，(3，4)，(4，5)的单个时隙资源。将候选时频资源集合中总的候选时隙资源的个数，记为M。
Step2：终端确定资源感知的窗口。
终端确定Sensing窗为时间区间
Figure PCTCN2020121704-appb-000008
其中，T 0是无线资源控制(Radio  Resource Control，RRC)信令配置的，
Figure PCTCN2020121704-appb-000009
是根据子载波间隔确定的，
Figure PCTCN2020121704-appb-000010
的单位为时隙。SL的子载波间隔不同，则相应的
Figure PCTCN2020121704-appb-000011
取值不同，可以根据下表2获取
Figure PCTCN2020121704-appb-000012
的取值。
表2根据子载波间隔确定
Figure PCTCN2020121704-appb-000013
值
Figure PCTCN2020121704-appb-000014
Step3：终端根据RRC配置的参数SL-ThresRSRP_p i_p j确定确定参数TH(p i)，其中，p i用于表示终端的数据的优先级值，p i是配置的优先级值。
Step4：终端确定S初始化为候选时频资源集合。
Step5：终端根据步骤2中没有监听的时隙，按照资源池上配置的任一个周期从候选时频资源集合S中进行资源排除。
Step6：终端根据Step2中确定的资源感知的窗口中终端接收到的SCI的时频资源指示信息，结合参考信号接收功率(Reference Signal Receiving Power，RSRP)测量值与RSRP阈值的比较，从候选时频资源集合S中排除相应的时频资源。
示例性的，终端可以将接收的SCI指示的时频资源中，和候选资源集合中的候选资源有重叠，并且RSRP测量值大于RSRP阈值的时频资源，从候选时频资源集合S中排除该候选资源。
Step7：终端判断候选时频资源集合S中的时频资源数量小于或者等于X×M，则将配置的RSRP阈值增加3dB，重新返回Step4进行候选资源的选择。
2、资源抢占检查的过程
作为资源抢占过程的一部分，UE的高层会触发资源抢占检查操作，以确定和更新候选的时频资源集合，从而高层可以在物理层确定(更新)的这个资源集合中选择用于PSCCH或PSSCH传输的时频资源。
其中，UE的高层下发的资源抢占检查对应的资源集合可以为(r 0，r 1，r 2......)。UE高层要求的用于PSCCH或PSSCH传输的时频资源集合的确定取决于具体的UE实现，资源抢占检查可以在时隙
Figure PCTCN2020121704-appb-000015
之前，也可以在时隙
Figure PCTCN2020121704-appb-000016
之后。其中，r i是资源集合(r 0，r 1，r 2......)中最小的时隙索引。
Figure PCTCN2020121704-appb-000017
源可以参考前述的表1根据子载波间隔确定。
如果终端确定UE高层下发的资源集合(r 0，r 1，r 2......)中的某个资源，如确定该资源不是根据前述感知的资源选择或重选的过程所确定的候选时频资源集合S′中的时频资源，并且该资源满足以下的判断条件：该资源对应的接收的SCI相应的RSRP测量值满足预设条件，并且proc TX＜proc pre并且proc TX＜proc RX，则UE应该上报该资源的抢占信息给UE的高层，表示该资源已经被其他有更高优先级的UE抢占。其中，proc RX表示UE接收的其他终端的SCI指示的发送数据的优先级值，proc TX是UE发送的SCI对应的发送数据的优先级值，proc pre是用于抢占检查判断的预配置优先级 值。优先级值越低，则表示其优先级别越高。
3、资源重评估的过程
参照上述的资源抢占检查的过程，UE的高层会触发资源重评估操作，以重新确定和更新候选的时频资源集合，从而高层可以在物理层确定(更新)的这个资源集合中选择用于PSCCH或PSSCH传输的时频资源。
其中，UE的高层下发的资源重评估对应的资源集合可以为(r 0，r 1，r 2......)。UE高层要求的用于PSCCH或PSSCH传输的时频资源集合的确定取决于具体的UE实现，资源抢占检查可以在时隙
Figure PCTCN2020121704-appb-000018
之前，也可以在时隙
Figure PCTCN2020121704-appb-000019
之后。其中，r i是资源集合(r 0，r 1，r 2......)中最小的时隙索引。
Figure PCTCN2020121704-appb-000020
源可以参考前述的表1根据子载波间隔确定。
如果终端确定UE高层下发的资源集合(r 0，r 1，r 2......)中的某个资源，如确定该资源不是根据前述感知的资源选择或重选的过程所确定的候选时频资源集合S′中的时频资源，则UE应该上报该资源的重评估请求给UE的高层，表示该资源需要释放和/或替换。
基于上述NR系统中的资源选择方式，对于具有节能功能的UE，如UE被配置了节能模式或者非连续接收(Discontinuous Reception，DRX)模式，其中，DRX模式即UE在一个DRX周期内部分时间段(ON duration)处于激活状态，部分时间段(OFF duration)处于非激活状态。当UE处于激活状态时，可以监听控制信令，如监听物理Sidelink控制信道(Pysical Sidelink Control Channel，PSCCH)，其中，PSCCH可以用于传输Sidelink控制信息(Sidelink Control information，SCI)。当UE处于节能或者是DRX模式下的非激活状态(休眠状态)，则UE不需要监听控制信令，以达成节能的目的。
因此，对于有节能需求的UE，当UE1处于DRX OFF duration下，由于UE1没有监听到进行资源选择的其他UE如UE2的调度信令SCI，而不能得知某些资源已被其他UE抢占。因此，UE1在该被抢占的资源上发送数据的时候，可能会与其他UE发生资源选择冲突，从而降低了侧行链路的通信质量。
基于解决上述的技术问题，本申请实施例提供一种信息传输方法。本申请提供的技术方案可以应用于各种通信系统，如：可以应用于5G通信系统，车用无线通信系统V2X，未来演进系统或多种通信融合系统，侧行通信系统等中。本申请提供的技术方案可以应用于上述通信系统的多种应用场景中，例如，增强型移动互联网(enhanced mobile broadband，eMBB)通信、超高可靠性与超低时延通信(ultra reliable&low latency communication，uRLLC)以及海量物联网通信(massive machine type communication，mMTC)等场景。
实施例一、
本申请实施例可以应用于如图1中所示的通信系统，该通信系统至少包括两个终端设备如第一终端和第二终端。如图3所示，该方法可以包括如下内容。
S301：第二终端发送侧行链路控制信息SCI，SCI包括节能指示信息以及第一时频资源信息。
需要知道的是，NR系统的侧行链路中，SCI分为两级，包括第一级SCI和第二级SCI。其中，第一级SCI承载在PSCCH中，第二级SCI承载在PSSCH中。本申请所指的SCI中包括的节能指示信息可以承载于第一级SCI或者第二级SCI中，本申请对此不做具体限定。
其中，节能指示信息用于表示第二终端处于节能状态或者非节能状态。节能状态的终端在某些特定的时段处于休眠状态，不能监听控制信令SCI。
在一种实施方式中，节能指示信息用于指示第二终端处于节能模式、非节能模式、非连续接收的DRX模式、非DRX模式或者第二终端的节能等级中的至少一种。其中，节能等级用于指示第二终端的节能程度，节能等级越高，表示第二终端的节能程度越高，节能等级越低，表示第二终端的节能程度越低。其中，节能等级的数值越大，节能等级越高。本发明中对节能等级的数值与节能等级的对应关系不作限定。
在一种实施方式中，节能等级与第二终端配置的DRX周期内激活时间或者非激活时间在所述DRX周期中的占比有对应关系。也就是说，可以根据第二终端配置的DRX周期内激活时间的占比不同，划分不同的节能等级；或者，可以根据第二终端配置的DRX周期内非激活时间的占比不同，划分不同的节能等级。这里的激活时间也可以理解为激活期，非激活时间可以理解为非激活期，休眠期，休眠时间。
示例性的，可以配置为如下表3所示的，DRX周期内激活时间的占比越大，表示UE处于激活状态的时间越多，则节能效果越高，对应的节能等级越高。其中，节能等级的数值越大，节能等级越高。DRX周期内激活时间占比为1表示第二终端处于休眠状态。此时节能等级最低。本发明对节能级别和节能效果的对应关系不做限定。本发明DRX周期内激活时间占比的区间划分也没有限定。
表3 DRX周期内激活时间占比与节能等级的对应关系
DRX周期内激活时间占比 节能等级
1 1
0.5＜占比＜1 2
0＜占比≤0.5 3
0 4
在另一种实施方式中，节能等级与第二终端配置的DRX周期长度有对应关系。也就是说，可以根据第二终端配置的DRX周期长度的不同，划分不同的节能等级。
例如，第二终端的DRX模式配置有一个长周期，一个短周期，则可以用3种不同的指示分别表示DRX长周期、DRX短周期和非DRX模式。比如用2比特指示DRX长周期，DRX短周期，非DRX模式这三种状态。如果DRX周期长度的配置大于两种，则可以根据DRX周期长度的不同范围对应不同的DRX节能级别。示例性的，DRX周期长度从大到小分为5个区间，则不同的区间对应不同的DRX节能级别。比如用3比特指示该5种不同的节能等级，每个状态对应一种节能等级和一个DRX周期长度的区间。可选的，DRX周期长度越长，则节能程度越高，节能等级越高。本发明对DRX周期和节能级别的对应关系不做限定。
可以知道，NR系统中，资源选择的方式可以为上述的全感知(Sensing)方式，可选的，NR系统中还可以应用基于LTE系统的部分感知(Partial sensing)方式，或 者随机选择资源的方式，其中，部分感知和随机选择的资源选择方式具体可以参照现有技术的相关介绍，本申请对此不做具体描述。因此，还可以通过配置不同的节能等级用于表示第二终端的资源选择方式。如不同的节能等级对应全感知、部分感知和随机选择中的一个或多个。即上述不同的资源选择方式分别对应了不同的节能等级。
另外，第二终端发送的SCI中包括的第一时频资源信息用于指示第二终端的数据对应的时频资源位置信息，表示第二终端将在该第一时频资源上发送数据。因此，该SCI还可以包括数据的优先级值。
S302：第一终端接收SCI。
第一终端可以在上述的感知的资源选择过程中监听来自其他UE的SCI，则接收到上述第二终端发送的SCI。
S303：第一终端根据SCI确定用于侧行传输的时频资源。
具体可以包括：第一终端确定SCI中的节能指示信息满足第一资源排除条件，并且第一时频资源与第一终端的候选资源集合中的候选资源有重叠，则将与第一时频资源有重叠的候选资源从候选资源集合中排除，得到用于侧行传输的时频资源。
在一种实施方式中，第一资源排除条件包括：节能指示信息为第二终端处于节能模式、或者第二终端处于DRX模式、或者第二终端的节能等级满足预设范围。
节能指示信息为第二终端处于节能模式、或者第二终端处于DRX模式、或者第二终端的节能等级满足预设范围。也可以理解为，节能指示信息指示第二终端处于节能模式、或者第二终端处于DRX模式、或者第二终端的节能等级满足预设范围。也可以理解为，节能指示信息为节能模式，DRX模式，预设范围内的节能等级。这里节能模式可以理解为处于节能状态，DRX模式可以理解为处于DRX状态或具有DRX功能或DRX被配置或DRX被使能。预设范围内的节能等级，可以理解为在一个或多个节能等级中，第二终端处于较高的节能等级。
也就是说，第一终端根据接收到的第二终端的SCI，确定第一时频资源与第一终端在感知的资源选择过程中的候选资源有重叠，并且该第二终端的节能状态满足第一资源排除条件，则第一终端不向有节能需求的第二终端进行资源抢占。如图4所示的，第一终端可以将与该第一时频资源有重叠的候选资源从候选资源集合中排除，以满足第二终端的节能需求。
也就是说，第二终端的SCI中的节能指示信息指示第二终端处于节能模式、或者第二终端处于DRX模式、或者第二终端的节能等级满足预设范围。则第一终端在感知或部分感知的资源选择方式中，不会抢占该SCI指示的第一时频资源。
也可以理解为，第一终端在感知或部分感知的资源选择方式中，当该SCI指示的第一时频资源和第一终端在感知的资源选择过程中的候选资源有重叠，第一终端排除与该第一时频资源有重叠的时频资源。其中该SCI的RSRP测量值可以大于或等于RSRP阈值，也可以小于RSRP阈值。
在一种实施方式中，第一资源排除条件还可以包括：SCI对应的数据的优先级值小于或者等于第一阈值，或者，SCI对应的数据的优先级值小于或者等于第二阈值且SCI对应的数据的优先级值大于或者等于第三阈值。这里SCI对应的数据的优先级值可以理解为SCI包括的优先级字段指示的优先级值，或者SCI包括的优先级字段的取 值。
也就是说，第一终端根据接收到的第二终端的SCI信息，确定第一时频资源与第一终端在感知的资源选择过程中的候选资源有重叠，并且该第二终端的SCI调度的数据的优先级值小于第一终端的SCI调度的数据的优先级值，或者，该第二终端的SCI调度的数据的优先级值满足预设的范围，或者该第二终端的SCI调度的数据的优先级值小于或者等于第一阈值，则第一终端不向数据优先级较高的第二终端进行资源抢占，第一终端可以将与第一时频资源有重叠的候选资源从候选资源集合中排除，以满足第二终端数据传输的可靠性。
在一种实施方式中，第一资源排除条件还可以包括上述两个条件，即节能指示信息指示第二终端处于节能模式、或者第二终端处于DRX模式、或者第二终端的节能等级满足预设范围，并且，SCI对应的数据的优先级值处于预设范围或者SCI对应的数据的优先级值小于或者等于第一阈值。这里SCI对应的数据的优先级值可以理解为SCI包括的优先级字段指示的优先级值，或者SCI包括的优先级字段的取值。
另外，在一种实施方式中，第一终端根据SCI确定用于侧行传输的时频资源，具体还可以包括：第一终端确定参考信号接收功率RSRP满足第二资源排除条件，并且第一时频资源与第一终端的候选资源集合中的候选资源有重叠，则将与第一时频资源有重叠的候选资源从候选资源集合中排除，得到剩余的时频资源，进而得到用于侧行传输的时频资源。其中，第二资源排除条件具体包括：RSRP测量值大于或者等于第一RSRP阈值。
这里，第一终端确定参考信号接收功率RSRP满足第二资源排除条件，可以理解为满足第二资源排除条件。
在另一种实施方式中，第一终端还可以根据检测到的SCI中指示的第二终端是否处于节能模式确定对应的RSRP的阈值。也就是说，若SCI中包括的节能指示信息指示第二终端为节能模式、或者第二终端处于DRX模式、或者节能等级满足预设范围，则第二资源排除条件包括：RSRP测量值大于或者等于第二RSRP阈值。若节能指示信息为第二终端为非节能模式、或者第二终端处于非DRX模式，则第二资源排除条件包括：RSRP测量值大于或者等于第三RSRP阈值。其中，第三RSRP阈值可以与第一RSRP相同，也可以不同。
可以理解的是，第一终端可以获取两个RSRP阈值，包括第二RSRP阈值和第三RSRP阈值。当接收的SCI中包含的节能指示信息指示该第二终端处于节能模式、或者第二终端处于DRX模式、或者节能等级满足预设范围，则第一终端使用第二RSRP阈值。当接收的SCI中包含的节能指示信息指示该第二终端处于非节能模式、或者第二终端处于非DRX模式，或者第二终端的节能等级不满足预设范围，则第一终端使用第三阈值。
可选的，该第三阈值为默认的RSRP阈值，当第二阈值没有被配置，或者第一阈值的配置是缺省的，或者第一终端没有获取第二阈值，则第二终端使用第二阈值。
可选的，该第二阈值可以小于该第三阈值。
或者，第一终端还可以根据检测到的SCI中指示的第二终端的节能等级确定对应的RSRP的阈值。也就是说，若SCI中包括的节能指示信息包括第二终端的节能等级， 则所述第二资源排除条件包括：RSRP测量值大于或者等于第二终端的节能等级对应的RSRP阈值。
可以理解的，节能等级与RSRP阈值有关联关系。示例性的，节能等级为4个等级，该4个等级可以关联2个RSRP阈值。以节能等级为DRX周期内激活时间占比为例，如根据前述的表3所示，假设2个RSRP阈值分别为第二阈值和第三阈值，则该第二阈值对应节能等级3和节能等级4，该第三阈值对应节能等级1和节能等级2。
可选的，该第二阈值小于该第三阈值。需要知道的是，在其他资源排除的条件满足的提前下，由于RSRP阈值越小，则终端判断某个资源应该排除的概率越高，则处于DRX模式下的UE相应的资源所重叠的候选资源更容易从候选资源集合中被排除。在一种实施方式中，如果基站下发的RRC信令中没有配置RSRP阈值，则第一终端不考虑RSRP测量值，判断满足上述第一资源排除条件，则从候选资源集合中排除相应的重叠的时频资源。或者，终端与网络设备预先约定，如果网络设备下发的RRC信令中没有配置第二阈值，则该SL对应的RSRP阈值默认为第三阈值。
在一种实施方式中，第二资源排除条件具体包括，第一终端的抢占优先级阈值和节能指示信息相关联。也就是说，第一终端在待发送数据的优先级值小于抢占优先级阈值时，才会抢占和感知或部分感知的资源选择方式中的候选资源有重叠的第一时频资源，第一时频资源为第一终端接收的SCI指示的时频资源。这里待发送数据的优先级值为进行感知或部分感知的资源选择方式中使用的优先级值。
其中，抢占优先级阈值可以为第一终端根据发送数据的优先级确定是否进行资源抢占的阈值，本申请的实施方式中，可以根据终端的节能状态配置不同的抢占优先级阈值。
即第一终端可以获取两个抢占优先级阈值，包括第一优先级阈值和第二优先级阈值。即第一优先级阈值和第二优先级阈值均为抢占优先级阈值。当接收的SCI中包含的节能指示信息指示该第二终端处于节能模式、或者第二终端处于DRX模式、或者节能等级满足预设范围，则第一终端使用第一优先级阈值。当接收的SCI中包含的节能指示信息指示该第二终端处于非节能模式、或者第二终端处于非DRX模式，或者第二终端的节能等级不满足预设范围，则第一终端使用第二优先级阈值。
示例性的，第一优先级阈值小于第二优先级阈值。
需要知道的是，由于优先级阈值越小，则终端判断抢占某个资源的概率越低，终端判断某个资源应该排除的概率越高，则处于DRX模式下的UE相应的资源更不容易被抢占。在一种实施方式中，如果基站下发的RRC信令中没有配置第一优先级阈值，则第一终端使用第二优先级阈值，第二优先级阈值为默认的抢占优先级阈值。
在一种实施方式中，上述SCI中的节能指示信息可以承载于第一级SCI或第二级SCI中。该节能指示信息可以承载于SCI中包含的一个字段。该字段可以是至少一个预留比特位或比特位。或者，第一级SCI或第二级SCI包含一个字段来承载节能指示信息，该字段可以为至少一个比特位。比特位的个数和约定方式取决于所承载的节能指示信息的划分需求和数量，本申请对此不做具体限定。
例如，节能指示信息承载于第一级SCI或第二级SCI的一个预留比特位，可以约定该比特位的值为1用于指示终端处于节能模式或者DRX模式，该比特位的值为0 用于指示终端处于非节能模式或者非DRX模式。
示例性的，节能指示信息承载于第一级SCI或第二级SCI的两个比特位，该比特位的值为00用于指示终端处于非DRX模式，该比特位的值为01用于指示终端处于DRX模式的节能等级1，该比特位的值为10用于指示终端处于DRX模式的节能等级2，该比特位的值为11用于指示终端处于DRX模式的节能等级3。
在一种实施方式中，还可以通过不同的第一级SCI或第二级SCI的格式，区别不同的节能指示信息，即不同的节能指示信息承载于不同格式的第一级SCI或第二级SCI中。即第二级SCI的第一格式，用于指示终端处于节能模式或DRX模式。第二级SCI的第二格式，用于指示终端处于非节能模式或非DRX模式。
示例性的，第二级SCI的第一格式，用于指示终端处于节能模式或DRX模式，第二级SCI的第二格式中的一个字段或一个指示状态，用于指示终端处于非节能模式或非DRX模式。
示例性的，第二级SCI的第一格式中的一个字段或一个指示状态，用于指示终端处于节能模式或DRX模式，第二级SCI的第二格式，用于指示终端处于非节能模式或非DRX模式。
在一种实现方式中，第二级SCI被无线网络临时标识(Radio Network Tempory Identity，RNTI)加扰，该RNTI与节能指示信息相关联或相对应。
S303还可以包括，第一终端接收SCI，则使用一个调整因子去调整该SCI包含的优先级字段的优先级值。在感知或部分感知的资源选择方式中使用调整后的优先级值进行资源排除的过程。这里，优先级值越低则优先级级别越高。该调整因子可以是网络设备配置的，可以是配置在资源池上的。该调整因子大于1，则使用SCI包含的优先级值除上该调整因子，或者使用SCI包含的优先级值减去该调整因子。该调整因子小于1，则使用SCI包含的优先级值乘上该调整因子并且向下取整或向上取整。当该调整后的优先级值小于最小的优先级值，则使用该最小的优先级值。即在感知或部分感知的资源选择方式中使用该最小的优先级值进行资源排除的过程。
通过本申请的上述实施方式，通过在SCI中携带用于指示终端处于DRX模式或者节能模式的节能指示信息，使得别的终端在进行资源选择的过程中，可以根据节能指示信息进行资源的确定。不去抢占处于节能模式或DRX模式或预设范围的节能等级的终端相应的预留资源。
具体的，终端在进行资源选择的过程中可以发现有节能需求的终端，从而通过排除与该有节能需求UE的时频资源有重叠的时频资源，或者降低RSRP阈值的方式，减少有节能需求UE对应的候选资源成被抢占的概率，有效保证了节能UE的资源的低干扰，避免处于节能模式的UE资源被抢而不知，从而保证了节能UE的数据传输的可靠性和服务质量，减少了其数据传输的重传次数，提高通信系统的运行效率。
另外，根据有节能需求UE发送的数据的优先级确定是否为节能UE的预留资源进行排除，保证了节能UE传输高优先级业务的可靠性和传输质量，减少了其数据传输的重传次数，提高通信系统的数据传输性能。
实施例二、
本申请实施例还提供一种信息传输方法，应用于如图1中所示的通信系统，该通 信系统至少包括两个终端设备如第一终端和第二终端。如图5所示，该方法可以包括如下内容。
S501：第一终端接收配置信息。
该配置信息用于指示第一终端的资源选择方式为感知或部分感知。其中，感知和部分感知的资源选择方式的具体过程可以参考常规技术中的解释说明以及前文相关的内容，此处不再赘述。
该配置信息可以是网络设备配置的，可以是用RRC信令配置，可以是配置在资源池上的。也可以是配置信息指示了第一终端的资源选择方式可以为感知或部分感知，具体使用感知或部分感知的资源选择方式由第一终端确定。
其中，第一终端处于DRX模式、节能模式、非DRX模式或非节能模式。
S502：第一终端确定第二时频资源被占用或需要重评估。
其中，第二时频资源可以是第一终端发送的SCI中指示的预留时频资源中的其中一个。
占用，是指该第二时频资源被其他的UE抢占或者占用，或者被其他的UE选为预留资源，或者该第二时频资源和其他的UE的预留资源有重叠。即第一终端可以通过资源抢占检查确定第二时频资源是否被其他UE占用。
在一种实施方式中，第一终端确定进行资源抢占或者资源重评估之前，该方法还可以包括：第一终端确定是否使能资源抢占或者资源重评估。具体可以包括以下三种方式：
方式一、第一终端根据RRC信令确定使能资源抢占或者资源重评估。
也就是说，第一终端可以根据网络设备配置的RRC信令，确定资源池是否使能了资源抢占或者资源重评估的功能。如果，根据RRC信令确定网络设备配置的资源池使能了资源抢占或者资源重评估的功能，则第一终端可以根据下述的条件确定是否进行资源抢占或者资源重评估；如果根据RRC信令确定网络设备配置的资源池未被使能资源抢占或者资源重评估的功能，则第一终端不会进行资源抢占或者资源重评估。
或者，第一终端在资源池上使能了DRX功能，则去使能资源抢占或者资源重评估的功能。去使能资源抢占或者资源重评估的功能包含终端不检查预留资源是否被抢占或者是否需要重评估，即不会为预留资源由于抢占或重评估进行资源重选。去使能资源抢占或者资源重评估的功能，也包含终端不可以进行资源抢占或者资源重评估。
方式二、如果资源池使能资源抢占或者资源冲评估，第一终端可以根据第一终端是否处于节能模式、DRX模式或者非节能模式、非DRX模式来确定是否使能资源抢占或者资源重评估。
例如，第一终端确定资源池使能资源抢占或者资源冲评估，则根据第一终端处于DRX模式下则不支持资源抢占，也即是说处于DRX模式或者节能模式的UE可以不受抢占检查的影响。可以理解为，DRX模式或节能模式的UE不会检查预留资源是否被其他终端占用或抢占。DRX模式或节能模式的UE也不会检查预留资源是否需要重评估。
方式三、如果资源池使能资源抢占或者资源冲评估，第一终端根据接收到的SCI包含的数据的优先级值满足预设条件，确定使能资源抢占或者资源重评估。
这里SCI包含的数据的优先级可以理解为SCI包含的优先级字段的取值，SCI包含的优先级字段的优先级值，SCI调度的数据的优先级值。也就是说，第一终端确定资源池使能资源抢占或者资源重评估的基础上，还可以根据接收到的SCI包含的优先级值是否满足预设条件，判断该第一终端是否真正的使能资源抢占或者资源重评估的功能。例如，第一终端接收的SCI包含的优先级值小于预设的优先级阈值threshold-priority，则第一终端真正的使能资源抢占或者资源重评估。其中，优先级阈值threshold-priority可以根据RRC信令配置在资源池上。优先级阈值没有被配置或者是缺省的状态，则第一终端去使能资源抢占或者资源重评估。
方式三、如果资源池使能资源抢占或者资源冲评估，第一终端根据测量得到的信道忙碌比(Channel Busy Radio，CBR)满足预设条件，确定使能资源抢占或者资源重评估。
也就是说，第一终端确定资源池使能资源抢占或者资源重评估的基础上，还可以根据测量得到的CBR是否满足预设条件，判断该第一终端是否真正的使能资源抢占或者资源重评估的功能。例如，第一终端判断CBR测量值大于预设的CBR阈值threshold-CBR，则第一终端真正的使能资源抢占或者资源重评估。其中，CBR阈值threshold-CBR可以根据RRC信令配置在资源池上。其中，CBR的测量值可以是终端被触发进行资源抢占或资源重评估的时刻的CBR测量值。CBR的测量值也可以是终端被触发进行资源抢占或资源重评估的时刻前K个时刻的CBR测量值。K为CBR处理时间。CBR阈值没有被配置或者是缺省的状态，则第一终端去使能资源抢占或者资源重评估。
通过上述的实施方式，终端可以根据确定是否真正使能资源抢占或者资源重评估来保证节能效果。具体的，对于传输数据优先级较高的情况，可以使能资源抢占或者资源重评估，以保证优先级较高的数据传输的可靠性和传输质量，提升通信系统的数据传输性能。另外，根据CBR测量值确定是否真正使能资源抢占或者资源重评估，可以综合判断在当前信道拥塞严重的时候，发生资源抢占的概率较高，此时保证节能效果会导致传输的可靠性无法保证，继而导致数据重传频繁，不利于通信系统的数据传输。因此，终端可以牺牲节能效果，而使能资源抢占以优先保证数据传输的可靠性和服务质量，进而减少重传的次数。
在一种实施方式中，若第一终端处于节能模式或者DRX模式，上述的步骤S502中，在第一终端确定第二时频资源被抢占或者需要重评估的情况下，第一终端在资源抢占或者资源重评估触发时刻之前的第一时段为激活时间。
也就是说，UE1被配置为节能功能或DRX功能，或者处于DRX模式，当前UE1进行非连续的接收。并且根据上述几种方式，UE1确定使能了资源抢占检查。则UE1在发送PSCCH或者PSSCH后的第一时段内为UE1的激活时间或激活期，或者UE1为激活状态，可以连续接收信号。激活时间可以理解为可以接收或感知或测量或监听SCI传输或盲检PSCCH的时间单元或时域资源集合。激活时间可以是以时隙为单位，也可以以符号为单位，这里不限定。
其中，第一时段的开始时间可以为第一终端发送第一SCI的结束符号的下一个符号，第一时段的结束时间为下一个预留时频资源之前N个时隙的前一个符号。其中的 第一SCI可以为第一级SCI或者第二级SCI。第一时段的开始时间可以为第一终端发送SCI或者PSSCH的结束符号之后的下一个符号，这里的SCI可以是第一级SCI或者第二级SCI。
如图6所示，UE1的第一SCI在图中所示的时频资源1上传输，时频资源1之后的最近的预留的资源位置为时隙m，则UE1在发送第一SCI之后的时频资源2的前N个时隙内处于激活状态，即图中的第一时段可以表示为第一终端发送第一SCI直至m-N的时段。
其中，N是根据子载波间隔确定的，具体的，N可以为前文所述的
Figure PCTCN2020121704-appb-000021
可以根据子载波间隔查找前述表1确定。
或者，在一种实施方式中，第一时段的结束时间还可以为下一个预留时频资源的开始符号的前一个符号。也就是是第一时段可以为第一终端发送第一SCI之后直至下一个预留时频资源的时段，即图6中所示的UE1在发送第一SCI之后时频资源2的时隙内处于激活状态。
示例性的，资源重评估或资源抢占的过程不受DRX功能的影响。
在一种实施方式中，若UE1在该第一时段内部分或全部处于非激活时间，则UE1在该第一时段内的非激活时间中唤醒进入激活状态。这里的唤醒进入激活状态可以理解为UE1从非激活状态转换为激活状态，可以理解为UE1从非激活状态切换为激活状态，可以理解为该第一时段为激活时间。UE1处于激活状态。示例性的，第一时段和UE1的非激活时间完全重叠或者部分重叠，如图7所示，其中，部分重叠可以包括右时段重叠或者左时段重叠，或者中间时段重叠等。右时段重叠表示UE1的非激活时间和第一时段的右侧部分重叠，左时段重叠表示UE1的非激活时间和第一时段的左侧部分重叠，中间时段重叠表示UE1的非激活时间和第一时段的中间部分重叠。则UE1可以在重叠的部分时段内由非激活状态唤醒进入激活状态，从而可以保证在第一时段内感知或者监听到其他终端的SCI，以进行资源抢占检查。
在一种实施方式中，第一终端在第一时段为激活时间，具体还可以包括：在第一终端传输侧行数据或者第一SCI之后，第一终端开启第一定时器，设定第一定时器的时长为上述的第一时段。其中，第一定时器的开始时间可以为第一终端发送第一SCI的结束符号的下一个符号，第一定时器的结束时间为下一个预留时频资源之前N个时隙的前一个符号，或者，第一定时器的结束时间还可以为下一个预留时频资源的开始符号的前一个符号。其中，第一SCI可以为第一级SCI或者第二级SCI。
通过上述的实施方式，终端是否处于节能模式或者DRX模式不会影响其进行资源抢占检查或者资源重评估，从而可以保证处于节能模式的终端的抢占检查过程可以正常进行，从而被抢资源的终端可以重选资源以获得更加低干扰的时频资源，增加数据传输的可靠性和传输质量，减少了其重传次数，提高了通信系统的数据传输效率。
在一种实施方式中，第一终端处于节能模式或者DRX模式，在第一终端确定第二时频资源被抢占或者需要重评估的情况下，上述的步骤S502中，第一终端确定第一时段为激活时间的条件，还可以包括：
条件一、若第一终端发送的第一SCI包含的优先级值低于预设的第一门限，和/或测量得到的CBR大于或者等于预设的第二门限，则第一终端确定第一时段为激活时间。
也即是说，第一终端处于节能模式或者DRX模式下，结合第一终端确定的第一SCI包含的优先级值是否满足预设的条件确定是否激活。例如，priority-TX＜第一门限，则第一终端确定当前的数据优先级较高，可以从非激活状态唤醒进行激活状态，以进行资源感知和资源抢占检查。priority-TX≥第一门限，则第一终端确定当前的数据优先级较低，第一终端为保证节能需求，不会从非激活状态唤醒进行激活状态，即UE1不受抢占检查的影响。
条件二、第一终端测量得到的CBR大于或者等于预设的第二门限是否满足预设的条件确定是否激活。
也即是说，第一终端处于节能模式或者DRX模式下，还可以结合第一终端测量得到的CBR是否满足预设的条件确定是否激活。这里的是否激活可以理解为第一终端在第一时段中的非激活时间是否转换为激活时间。
可选的，该CBR可以是发送SCI的时刻测量的CBR值。
例如，CBR≥(大于或者等于)第二门限，则第一终端确定当前的传输信道拥塞，可以从非激活状态唤醒进行激活状态，以进行资源感知和资源抢占检查。CBR＜(小于)第二门限，则第一终端确定当前的传输信道畅通或者当前的信道状态不那么拥塞，第一终端为保证节能需求，不会从非激活状态唤醒进行激活状态，即UE1不受抢占检查的影响。
需要说明的是，在具体的实施中，上述的条件一和条件二与可以结合，也就是当上述两个条件都满足的情况下，第一终端才确定激活(即从非激活状态唤醒进入激活状态)。其中，第一门限可以由网络设备使用RRC配置在资源池上。第一门限没有配置或缺省，则确定第一时段为激活时间。第二门限可以由网络设备使用RRC配置在资源池上。第二门限没有配置或缺省，则确定第一时段为激活时间。第一门限和第二门限可以由本领域技术人员根据数据传输的需求进行配置，本申请对此不做具体限定。
通过上述本申请的实施方式，DRX模式下的终端可以结合数据优先级和CBR测量值，以确定是否激活进行资源抢占检查或者资源冲评估，也就是某些条件下为保证资源抢占检查或者资源冲评估，可以不考虑终端的节能需求。例如，在信道拥塞严重时或者对于高优先级的传输数据，处于节能模式的终端可以激活进入非节能模式，以保证抢占检查过程可以正常进行。因为信道拥塞严重时资源被抢占的概率较高，通过上述方式可以保证被抢终端可以重选资源获得更加低干扰的资源，增加数据传输的可靠性和传输质量，减少数据重传次数，提高通信系统的数据传输效率。
在一种实施方式中，上述实施方式中的步骤S502具体还可以包括，根据前述的资源抢占过程，第一终端的高层触发资源抢占(检查)，第一终端的物理层接收高层指示的资源抢占对应的时频资源集合，例如可以为(r 0，r 1，r 2......)，此时，第一终端根据感知的资源选择过程确定/更新候选资源集合S′(第一资源集合)，第一终端根据高层指示的资源抢占对应的时频资源集合(r 0，r 1，r 2......)中将不属于第一资源集合的时频资源标记为已被抢占/占用的资源。
例如，第二时频资源可以为(r 0，r 1，r 2......)集合中的一个资源。当第一终端确定第二时频资源不属于第一资源集合，且第二时频资源对应的第二SCI包含的优先级值满足第一抢占条件，则第一终端将第二时频资源标记为已被占用的资源。其中，第 一抢占条件为第二时频资源对应的第二SCI包含的优先级值低于接收的SCI所包含的优先级值，且接收的SCI所包含的优先级值低于抢占阈值。。
具体的，第一终端的物理层可以上报该第二时频资源的抢占信息给第一终端的高层，表示该第二时频资源已经被其他传输更高优先级数据的终端占用。进一步的，第一终端可以释放第二时频资源。可选的，第一终端释放第二时频资源，重选选择时频资源。其中重新选择时频资源可以使用第一资源集合中的时频资源。
其中，第一资源集合为第一终端确定的时频资源集合，第二时频资源为第一终端的预留资源。第一资源集合为第一终端确定的时频资源集合，可以理解为，第一终端进行感知的资源选择过程中获取的时频资源集合。第二时频资源为第一终端的预留资源，可以理解为，第一终端发送的SCI中指示的时频资源。另外，第一终端接收第二时频资源对应的第二SCI，第二SCI可以是其他终端例如第二终端发送的，以指示第二终端预留的时频资源信息。第一终端在感知的资源选择过程中使用该第二SCI信息。
在一种实施方式中，为了保证节能终端的节能需求，降低抢占检查的概率，可以为终端配置如下的条件：基于数据的优先级值进行判断的第一抢占条件，或者，基于RSRP测量值进行判断的第二抢占条件，从而终端可以根据当前是否处于节能模式或者节能等级而确定不同的阈值进行抢占检查的判断。
也就是说，第一终端可以根据当前处于节能模式或者DRX模式，选择对应的优先级值阈值或者RSRP阈值，判断是否满足确定该资源被抢占的条件；另外，可以根据当前处于非节能模式或者非DRX模式，选择对应的优先级值阈值或者RSRP阈值，判断是否满足确定该资源被抢占的条件。其中，RSRP阈值的设计也适用于资源重评估的过程。即第一终端可以根据当前处于节能模式或者DRX模式，选择对应的RSRP阈值，判断该资源是否因为重评估被释放的条件；另外，可以根据当前处于非节能模式或者非DRX模式，选择对应的RSRP阈值，判断该资源是否因为重评估被释放的条件。具体的，第一抢占条件基于第一终端的节能状态，可以分别为：
1、当第一终端处于非节能模式或者非DRX模式时，第二SCI包含的优先级值满足第一抢占条件，包括：
第二SCI包含的优先级值小于或者等于第三门限，并且，第二SCI包含的优先级值小于或者等于第一SCI包含的优先级值。其中，优先级值越小表示对应的数据优先级的等级越高。
这里第二SCI是第一终端接收的SCI，第一SCI是第一终端发送的SCI，该第二SCI指示的时频资源和第一SCI中指示的预留资源有重叠。第三门限是抢占阈值，第二SCI所包含的优先级值要小于或等于第三门限是第一终端确定第一SCI中指示的预留资源是否被占用或被抢占的必要条件之一。
2、当第一终端处于节能模式或者DRX模式时，第二SCI包含的优先级值满足第一抢占条件，包括：
第二SCI包含的优先级值小于或者等于第四门限，并且，第二SCI包含的优先级值小于或者等于第一SCI包含的优先级值。
示例性的，第三门限和第四门限可以由网络设备使用RRC配置在资源池上。
这里第二SCI是第一终端接收的SCI，第一SCI是第一终端发送的SCI，该第二 SCI指示的时频资源和第一SCI中指示的预留资源有重叠。第三门限是抢占阈值，第二SCI所包含的优先级值要小于或等于第三门限是第一终端确定第一SCI中指示的预留资源是否被占用或被抢占的必要条件之一。
其中，第三门限和第四门限可以由本领域技术人员根据数据传输的需求进行配置，本申请对此不做具体限定。
示例性的，第一终端获取第三门限和第四门限，当第一终端处于非节能模式或者非DRX模式时，第一终端使用第三门限，当第一终端处于节能模式或者DRX模式时，第一终端使用第四门限。
在一种实施方式中，第三门限可以小于第四门限。
第三门限是抢占阈值，第二SCI所包含的优先级值要小于或等于抢占门限是第一终端确定第一SCI中指示的预留资源是否被占用或被抢占的必要条件之一。抢占阈值越小，则确定为抢占的概率越小，这里抢占阈值是优先级值，值越小代表优先级级别越高。
第一终端可以根据预先配置的信息获取第三门限和第四门限，也可以通过接收网络设备的RRC信令获取第三门限和第四门限，其中，第三门限和第四门限的配置信息可以承载于RRC信令中。
3、当第一终端处于节能模式或者DRX模式，第一抢占条件可以基于不同的节能等级进行配置。也就是，第二SCI包含的优先级值满足第一抢占条件可以包括：
第二SCI包含的优先级值小于或者等于第五门限，并且，第二SCI包含的优先级值小于或者等于第一SCI包含的优先级值。其中，优先级值越小，优先级的等级越高。第五门限可以与第一终端DRX周期内激活时间或者非激活时间在DRX周期中的占比有对应关系，或者，与第一终端的DRX周期长度有对应关系。
示例性的，第五门限可以满足：P＝p0×a，其中，p0表示第三门限，a表示调整因子，调整因子a与第一终端的DRX周期内激活时间或非激活时间在DRX周期中的占比有对应关系，或者，调整因子a与第一终端的DRX周期长度有对应关系。
第一终端可以根据预先配置的信息获取调整因子a，也可以通过接收网络设备的RRC信令获取调整因子a，其中，调整因子a的配置信息可以承载于RRC信令中。
示例性的，第一终端获取第三门限和调整因子，则第一终端在进行资源抢占的时候，使用第五门限，即使用调整因子调整后的第三门限。
具体的，第五门限的配置信息可以根据第一终端的节能等级确定。第五门限可以与终端的节能等级存在映射关系。第五门限可以是一个或多个示例性的，可以根据下述的表4得到第五门限。
表4终端的节能等级与资源抢占阈值的映射关系
Figure PCTCN2020121704-appb-000022
其中，a1＜a2＜a3。同理可知，如上述表4中的节能等级对应的占比是基于第一 终端的激活时间在DRX周期中的占比确定的，则a3＜a2＜a1。
其中，阈值1<阈值2<阈值3。
另外，第二抢占条件基于第一终端的节能状态，可以分别配置为：
1、当第一终端处于非节能模式或者非DRX模式时，RSRP测量值满足第二抢占条件为：RSRP测量值大于或者等于第六门限。
RSRP阈值是判断某个资源是否需要被排除时使用的。RSRP测量值大于或者等于RSRP阈值，则认为相应的资源是高干扰的资源或者是被占用的资源或者是需要重评估的资源。则在抢占或重评估的过程中，该资源被判断为被占用或需要重评估，则第一终端释放该资源，并重新选择资源。
2、当第一终端处于节能模式或者DRX模式时，RSRP测量值满足第二抢占条件为：RSRP测量值大于或者等于第七门限。
RSRP阈值是判断某个资源是否需要被排除时使用的。RSRP测量值大于或者等于RSRP阈值，则认为相应的资源是高干扰的资源或者是被占用的资源或者是需要重评估的资源。则在抢占或重评估的过程中，该资源被判断为被占用或需要重评估，则第一终端释放该资源，并重新选择资源。
示例性的，第一终端获取第六门限和第七门限，当第一终端处于非节能模式或者非DRX模式时，第一终端使用第六门限，当第一终端处于节能模式或者DRX模式时，第一终端使用第七门限。
其中，第六门限和第七门限可以由本领域技术人员根据数据传输的需求进行配置，本申请对此不做具体限定。
在一种实施方式中，第六门限可以小于第七门限。
3、当第一终端处于节能模式或者DRX模式，第二抢占条件可以基于不同的节能等级进行配置。也就是说，RSRP测量值满足第二抢占条件为：
RSRP测量值大于或者等于第八门限。第八门限可以与第一终端的DRX周期内激活时间或者非激活时间在DRX周期中的占比有对应关系，或者，与第一终端的DRX周期长度有对应关系。
示例性的，第八门限可以满足：P＝p1×b，其中，p0表示第六门限，b表示调整因子，调整因子b与第一终端的DRX周期内激活时间或非激活时间在DRX周期中的占比有对应关系，或者，调整因子b与第一终端的DRX周期长度有对应关系。
第一终端可以根据预先配置的信息获取调整因子b，也可以通过接收网络设备的RRC信令获取调整因子b，其中，调整因子b的配置信息可以承载于RRC信令中。
示例性的，第一终端获取第六门限和调整因子，则第一终端在进行资源抢占或资源重评估的时候，使用第八门限，即使用调整因子调整后的第六门限。
具体的，第八门限的配置信息可以根据第一终端的节能等级确定。第八门限可以与终端的节能等级存在映射关系。
通过本申请的上述实施方式，通过对有节能需求的终端配置特定的抢占阈值，以降低节能终端的抢占检查的概率，从而保证节能效率。对于不同节能等级的终端，设置不同的抢占阈值，保证了节能效果要求越高的终端，进行抢占检查的概率越低，越能保证其节能效果，同时能保证较高优先级的数据传输的可靠性。因此，当配置的数 据优先级阈值越低，接收SCI的数据优先级越难满足抢占条件，抢占检查的概率越低。本实施例对于有节能需求终端，降低对应的抢占阈值，保证其优先级较高的传输数据可以进行抢占检查，保证数据传输的可靠性和传输质量，减少其重传次数，提高通信系统的数据传输效率。
需要说明的是，在具体的实现过程中，上述本申请的实施例一和实施例二中的多种实施方式可以相互结合，本申请对此不做限定。并且，第一终端或者第二终端的具体实现过程也可以互换，即第一终端在上述实施方式中执行的步骤也可以在第二终端侧进行实现，反之亦然。
另外，本申请还提供一种通信装置，可以用于执行上述本申请的实施例一中第一终端执行的步骤。如图8所示，该通信装置800包括：接收模块801和处理模块802。
其中，接收模块801用于接收侧行链路控制信息SCI，SCI包括第二终端的节能指示信息以及第一时频资源信息。
处理模块802用于根据SCI确定用于侧行传输的时频资源。
在一种可能的设计方式中，节能指示信息用于指示第二终端处于节能模式、非节能模式、非连续接收的DRX模式、非DRX模式或者第二终端的节能等级中的至少一种，其中，节能等级用于指示第二终端的节能程度。
在一种可能的设计方式中，节能等级与第二终端配置的DRX周期内激活时间或者非激活时间在DRX周期中的占比有对应关系，或者，节能等级与第二终端配置的DRX周期长度有对应关系。
在一种可能的设计方式中，处理模块802具体用于：节能指示信息满足第一资源排除条件，为将与第一时频资源有重叠的候选资源从候选资源集合中排除的一个条件。
在一种可能的设计方式中，第一资源排除条件包括：节能指示信息指示第二终端处于节能模式、或者第二终端处于DRX模式、或者第二终端的节能等级满足预设范围。
在一种可能的设计方式中，第一资源排除条件还包括：SCI包含的优先级值小于或者等于第一阈值，或者，SCI包含的优先级值小于或者等于第二阈值且SCI包含的优先级值大于或者等于第三阈值。
在一种可能的设计方式中，处理模块802还用于：确定满足第二资源排除条件为将与第一时频资源有重叠的候选资源从候选资源集合中排除的一个条件。
在一种可能的设计方式中，第二资源排除条件具体包括：参考信号接收功率RSRP测量值大于或者等于第一RSRP阈值。
在一种可能的设计方式中，若节能指示信息为第二终端为节能模式、或者第二终端处于DRX模式、或者节能等级满足预设范围，则第二资源排除条件包括：RSRP测量值大于或者等于第二RSRP阈值；若节能指示信息为第二终端为非节能模式、或者第二终端处于非DRX模式，则第二资源排除条件包括：RSRP测量值大于或者等于第三RSRP阈值。
在一种可能的设计方式中，节能指示信息承载于第一级SCI的至少一个比特位，或者，节能指示信息承载于第二级SCI的至少一个比特位。
在一种可能的设计方式中，第一级SCI或第二级SCI被无线网络临时标识RNTI加扰，RNTI与节能指示信息相关联，或者，第二级SCI的第一格式用于指示节能模式 或DRX模式，第二级SCI的第二格式用于指示非节能模式或非DRX模式。
本申请还提供另一种通信装置，可以用于执行上述本申请的实施例一中第二终端执行的步骤。如图9所示，该通信装置900包括发送模块901，用于发送侧行链路控制信息SCI，SCI包括节能指示信息以及第一时频资源信息，其中，节能指示信息用于表示第二终端处于节能状态或者非节能状态。
在一种可能的设计方式中，节能指示信息用于指示第二终端处于节能模式、非节能模式、非连续接收的DRX模式、非DRX模式或者第二终端的节能等级中的至少一种，其中，节能等级用于指示第二终端的节能程度。
在一种可能的设计方式中，节能等级与第二终端配置的DRX周期内激活时间或者非激活时间在DRX周期中的占比有对应关系，或者，节能等级与第二终端配置的DRX周期长度有对应关系。
在一种可能的设计方式中，节能指示信息承载于第一级SCI的至少一个比特位，或者，节能指示信息承载于第二级SCI的至少一个比特位。
本申请还提供一种通信装置，可以用于执行上述本申请的实施例二中第一终端执行的步骤。如图10所示，该通信装置1000包括接收模块1001和处理模块1002。
其中，接收模块1001用于接收配置信息，配置信息用于指示该通信装置1001(第一终端)的资源选择方式为感知或部分感知。
处理模块1002用于确定第二时频资源被占用或者需要重评估，其中，第一终端处于非连续接收DRX模式、节能模式、非DRX模式或非节能模式。
在一种可能的设计方式中，若第一终端处于节能模式或者DRX模式，第一终端在资源抢占或者资源重评估触发时刻之前的第一时段为激活时间。
在一种可能的设计方式中，第一终端在第一时段为激活时间，包括：在第一终端传输侧行数据信息或第一侧行链路控制信息SCI之后，第一终端开启第一定时器，第一定时器的时长为第一时段。
在一种可能的设计方式中，第一时段的开始时间为第一终端发送第一SCI的结束符号的下一个符号，第一时段的结束时间为下一个预留时频资源之前N个时隙的前一个符号，或者，或者第一时段的结束时间为下一个预留时频资源的开始符号的前一个符号，其中，N是根据子载波间隔确定的。
在一种可能的设计方式中，第一终端在第一时段为激活时间，还包括：若第一终端发送的第一SCI包含的优先级值低于第一门限，和/或测量得到的信道忙碌比CBR大于或者等于第二门限，则第一终端确定第一时段为激活时间。
在一种可能的设计方式中，处理模块1002还用于确定第二时频资源不属于第一资源集合，且第二时频资源对应的第二SCI包含的优先级值满足第一抢占条件，则第一终端释放第二时频资源，其中，第一资源集合为第一终端确定的时频资源集合，第二时频资源为第一终端的预留资源。
在一种可能的设计方式中，当第一终端处于非节能模式或者非DRX模式时，第一抢占条件包括：第二SCI包含的优先级值小于或者等于第三门限，并且，第二SCI包含的优先级值小于或者等于第一SCI包含的优先级值。
在一种可能的设计方式中，当第一终端处于节能模式或者DRX模式时，第一抢占 条件包括：第二SCI包含的优先级值小于或者等于第四门限，并且，第二SCI包含的优先级值小于或者等于第一SCI包含的优先级值。
在一种可能的设计方式中，处理模块1002还用于确定满足第二抢占条件，第一终端确定第二时频资源不属于第一资源集合，释放第二时频资源。
在一种可能的设计方式中，当第一终端处于非节能模式或者非DRX模式时，满足第二抢占条件为：RSRP测量值大于或者等于第五门限；当第一终端处于节能模式或者DRX模式时，第二抢占条件为：RSRP测量值大于或者等于第六门限。
在一种可能的设计方式中，处理模块1002还用于进行资源选择，从候选资源集合中确定用于侧行传输的时频资源，其中，满足第二资源排除条件，为第一终端将与第二SCI对应的第二时频资源有重叠的候选资源从候选资源集合中排除的一个条件。
需要说明的是，上述本申请实施例中所描述发送模块或者接收模块进行的发送或接收可以是在处理模块(例如处理器)的控制之下执行的，因此，本申请实施例中也可以将发送或接收的动作描述为处理模块(处理器)执行的，并不影响本领域技术人员对方案的理解。
图11是本申请实施例提供的通信装置(终端设备)的另一结构示意图。如图11所示，终端设备1100包括处理器1101和收发器1102。可选的，该终端设备1100还包括存储器1103。其中，处理器1101、收发器1102和存储器1103之间可以通过内部连接通路互相通信，传递控制和/或数据信号，该存储器1103用于存储计算机程序，该处理器1101用于从该存储器1103中调用并运行该计算机程序，以控制该收发器1102收发信号。终端设备1100还可以包括天线，用于将收发器1102输出的上行数据或上行控制信令通过无线信号发送出去。
上述处理器1101和存储器1103可以合成一个处理装置，处理器1101用于执行存储器1103中存储的程序代码来实现上述功能。具体实现时，该存储器1103也可以集成在处理器1101中，或者独立于处理器1101。
具体的，该终端设备1100可对应于根据本申请实施例的方法的各个实施例中。并且，该终端设备1100中的各单元和上述其他操作和/或功能分别为了实现方法的各个实施例中的相应流程。
上述处理器1101可以用于执行前面方法实施例中描述的终端设备实现的一项或多项执行动作，而收发器1102可以用于执行前面方法实施例中描述的终端设备的一项或多项发送或者接收的动作。具体请见前面方法实施例中的描述，此处不再赘述。
可选的，上述终端设备1100还可以包括电源，用于给终端设备中的各种器件或电路提供电源。除此之外，为了使得终端设备的功能更加完善，该终端设备1100还可以包括输入单元、传感器、显示单元、音频电路、摄像头、扬声器和麦克风等。
上述各个装置实施例中的终端设备可以与方法实施例中的第一终端或者第二终端完全对应，由相应的模块或者单元执行相应的步骤，例如，当该装置以芯片的方式实现时，上述的接收模块可以是该芯片用于从其他芯片或者装置接收信号的接口电路。以上用于发送的单元是一种该装置的接口电路，用于向其他装置发送信号，例如，当该装置以芯片的方式实现时，上述的发送模块是该芯片用于向其他芯片或者装置发送信号的接口电路。
应理解，本申请实施例中的处理器可以为CPU，该处理器还可以是其他通用处理器、数字信号处理(digital signal processing，DSP)、专用集成电路(application specific integrated circuit，ASIC)、现场可编程逻辑门阵列(Field Programmable Gate Array，FPGA)或者其他可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。
还应理解，本申请实施例中的存储器可以是易失性存储器或非易失性存储器，或可包括易失性和非易失性存储器两者。其中，非易失性存储器可以是只读存储器(read-only memory，ROM)、可编程只读存储器(programmable ROM，PROM)、可擦除可编程只读存储器(erasable PROM，EPROM)、电可擦除可编程只读存储器(electrically EPROM，EEPROM)或闪存。易失性存储器可以是随机存取存储器(random access memory，RAM)，其用作外部高速缓存。通过示例性但不是限制性说明，许多形式的随机存取存储器(random access memory，RAM)可用，例如静态随机存取存储器(static RAM，SRAM)、动态随机存取存储器(DRAM)、同步动态随机存取存储器(synchronous DRAM，SDRAM)、双倍数据速率同步动态随机存取存储器(double data rate SDRAM，DDR SDRAM)、增强型同步动态随机存取存储器(enhanced SDRAM，ESDRAM)、同步连接动态随机存取存储器(synchlink DRAM，SLDRAM)和直接内存总线随机存取存储器(direct rambus RAM，DR RAM)。
本申请实施例还提供了一种通信系统，该通信系统包括：上述本申请实施例中提供的任一种第一终端和第二终端。
本申请实施例还提供了一种计算机可读介质，用于存储计算机程序代码，该计算机程序包括用于执行上述方法中的网络设备和终端设备中所执行方法的指令。该可读介质可以是ROM或RAM，本申请实施例对此不做限制。
本申请还提供了一种计算机程序产品，该计算机程序产品包括指令，当该指令被执行时，以使得终端设备和网络设备分别执行对应于上述方法的终端设备和网络设备的操作。
本申请实施例还提供了一种系统芯片，该系统芯片包括：处理单元和通信单元，该处理单元，例如可以是处理器，该通信单元例如可以是输入/输出接口、管脚或电路等。该处理单元可执行计算机指令，以使该芯片所应用的通信装置执行上述本申请实施例提供的方法中的终端设备和网络设备的操作。
可选地，上述本申请实施例中提供的任意一种通信装置可以包括该系统芯片。
可选地，该计算机指令被存储在存储单元中。
可选地，该存储单元为该芯片内的存储单元，如寄存器、缓存等，该存储单元还可以是该通信装置内的位于该芯片外部的存储单元，如ROM或可存储静态信息和指令的其他类型的静态存储设备，RAM等。其中，上述任一处提到的处理器，可以是一个CPU，微处理器，ASIC，或一个或多个用于控制上述的反馈信息传输的方法的程序执行的集成电路。该处理单元和该存储单元可以解耦，分别设置在不同的物理设备上，通过有线或者无线的方式连接来实现该处理单元和该存储单元的各自的功能，以支持该系统芯片实现上述实施例中的各种功能。或者，该处理单元和该存储器也可以耦合在同一个设备上。应理解，在本申请实施例中的处理器可以是CPU，该处理器还可以是其他通用处理器、DSP、ASIC、FPGA或者其他可编程逻辑器件、分立门或者晶体 管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
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，上述描述的系统、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。
应理解，在本申请的各种实施例中，上述各过程的序号的大小并不意味着执行顺序的先后，各过程的执行顺序应以其功能和内在逻辑确定，而不应对本申请实施例的实施过程构成任何限定。
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。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、通信装置和方法，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系统，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，本申请的技术方案本质上或者说对现有技术做出贡献的部分或者该技术方案的部分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。
最后应说明的是：以上所述，仅为本申请的具体实施方式，但本申请的保护范围并不局限于此，任何在本申请揭露的技术范围内的变化或替换，都应涵盖在本申请的保护范围之内。因此，本申请的保护范围应以所述权利要求的保护范围为准。

Claims (29)

  1. 一种信息传输方法，应用于第一终端，其特征在于，所述方法包括：
    接收侧行链路控制信息SCI，所述SCI包括第二终端的节能指示信息以及第一时频资源信息；
    根据所述SCI确定用于侧行传输的时频资源。
  2. 根据权利要求1所述的方法，其特征在于，所述节能指示信息用于指示所述第二终端处于节能模式、非节能模式、非连续接收的DRX模式、非DRX模式或者所述第二终端的节能等级中的至少一种，其中，所述节能等级用于指示所述第二终端的节能程度。
  3. 根据权利要求2所述的方法，其特征在于，所述节能等级与所述第二终端配置的DRX周期内激活时间或者非激活时间在所述DRX周期中的占比有对应关系，或者，所述节能等级与所述第二终端配置的DRX周期长度有对应关系。
  4. 根据权利要求1-3任一项所述的方法，其特征在于，所述根据所述SCI确定用于侧行传输的时频资源，具体包括：
    所述节能指示信息满足第一资源排除条件，为将与所述第一时频资源有重叠的候选资源从候选资源集合中排除的一个条件。
  5. 根据权利要求4所述的方法，其特征在于，所述第一资源排除条件包括：
    所述节能指示信息指示所述第二终端处于节能模式、或者所述第二终端处于DRX模式、或者所述第二终端的节能等级满足预设范围。
  6. 根据权利要求5所述的方法，其特征在于，所述第一资源排除条件还包括：
    所述SCI包含的优先级值小于或者等于第一阈值，或者，所述SCI包含的优先级值小于或者等于第二阈值且所述SCI包含的优先级值大于或者等于第三阈值。
  7. 根据权利要求1-6任一项所述的方法，其特征在于，所述根据所述SCI确定用于侧行传输的时频资源，还包括：
    满足第二资源排除条件，为将与所述第一时频资源有重叠的候选资源从候选资源集合中排除的一个条件。
  8. 根据权利要求7所述的方法，其特征在于，所述第二资源排除条件具体包括：
    参考信号接收功率RSRP测量值大于或者等于第一RSRP阈值。
  9. 根据权利要求7所述的方法，其特征在于，若所述节能指示信息为所述第二终端为节能模式、或者所述第二终端处于DRX模式、或者节能等级满足预设范围，则所述第二资源排除条件包括：RSRP测量值大于或者等于第二RSRP阈值；
    若所述节能指示信息为所述第二终端为非节能模式、或者所述第二终端处于非DRX模式，则所述第二资源排除条件包括：所述RSRP测量值大于或者等于第三RSRP阈值。
  10. 根据权利要求1-9任一项所述的方法，其特征在于，所述节能指示信息承载于第一级SCI的至少一个比特位，或者，所述节能指示信息承载于第二级SCI的至少一个比特位。
  11. 根据权利要求1-9任一项所述的方法，其特征在于，所述第一级SCI或第二级SCI被无线网络临时标识RNTI加扰，所述RNTI与所述节能指示信息相关联，或 者，所述第二级SCI的第一格式用于指示节能模式或DRX模式，第二级SCI的第二格式用于指示非节能模式或非DRX模式。
  12. 一种信息传输方法，应用于第二终端，其特征在于，所述方法还包括：
    发送侧行链路控制信息SCI，所述SCI包括节能指示信息以及第一时频资源信息，其中，所述节能指示信息用于表示所述第二终端处于节能状态或者非节能状态。
  13. 根据权利要求12所述的方法，其特征在于，所述节能指示信息用于指示所述第二终端处于节能模式、非节能模式、非连续接收的DRX模式、非DRX模式或者所述第二终端的节能等级中的至少一种，其中，所述节能等级用于指示所述第二终端的节能程度。
  14. 根据权利要求13所述的方法，其特征在于，所述节能等级与所述第二终端配置的DRX周期内激活时间或者非激活时间在所述DRX周期中的占比有对应关系，或者，所述节能等级与所述第二终端配置的DRX周期长度有对应关系。
  15. 根据权利要求12-14任一项所述的方法，其特征在于，所述节能指示信息承载于第一级SCI的至少一个比特位，或者，所述节能指示信息承载于第二级SCI的至少一个比特位。
  16. 一种信息传输方法，应用于第一终端，其特征在于，所述方法包括：
    接收配置信息，所述配置信息用于指示所述第一终端的资源选择方式为感知或部分感知；
    确定第二时频资源被占用或者需要重评估，其中，所述第一终端处于非连续接收DRX模式、节能模式、非DRX模式或非节能模式。
  17. 根据权利要求16所述的方法，其特征在于，若所述第一终端处于节能模式或者DRX模式，所述第一终端在资源抢占或者资源重评估触发时刻之前的第一时段为激活时间。
  18. 根据权利要求17所述的方法，其特征在于，所述第一终端在第一时段为激活时间，包括：
    在所述第一终端传输侧行数据信息或第一侧行链路控制信息SCI之后，所述第一终端开启第一定时器，所述第一定时器的时长为第一时段。
  19. 根据权利要求17或18所述的方法，其特征在于，所述第一时段的开始时间为所述第一终端发送第一SCI的结束符号的下一个符号，所述第一时段的结束时间为下一个预留时频资源之前N个时隙的前一个符号，或者，或者所述第一时段的结束时间为下一个预留时频资源的开始符号的前一个符号，其中，所述N是根据子载波间隔确定的。
  20. 根据权利要求17-19任一项所述的方法，其特征在于，所述第一终端在第一时段为激活时间，还包括：
    若所述第一终端发送的第一SCI包含的优先级值低于第一门限，和/或测量得到的信道忙碌比CBR大于或者等于第二门限，则所述第一终端确定第一时段为激活时间。
  21. 根据权利要求16-20任一项所述的方法，其特征在于，所述确定第二时频资源被占用或者需要重评估之前，所述方法还包括：
    确定所述第二时频资源不属于第一资源集合，且所述第二时频资源对应的第二 SCI包含的优先级值满足第一抢占条件，则所述第一终端释放所述第二时频资源，其中，所述第一资源集合为所述第一终端确定的时频资源集合，所述第二时频资源为所述第一终端的预留资源。
  22. 根据权利要求21所述的方法，其特征在于，当所述第一终端处于非节能模式或者非DRX模式时，所述第一抢占条件包括：
    所述第二SCI包含的优先级值小于或者等于第三门限，并且，所述第二SCI包含的优先级值小于或者等于第一SCI包含的优先级值。
  23. 根据权利要求21所述的方法，其特征在于，当所述第一终端处于节能模式或者DRX模式时，所述第一抢占条件包括：
    所述第二SCI包含的优先级值小于或者等于第四门限，并且，所述第二SCI包含的优先级值小于或者等于第一SCI包含的优先级值。
  24. 根据权利要求16-23任一项所述的方法，其特征在于，所述确定第二时频资源被占用或者需要重评估，所述方法还包括：
    满足第二抢占条件，所述第一终端确定所述第二时频资源不属于第一资源集合，释放所述第二时频资源。
  25. 根据权利要求24所述的方法，其特征在于，当所述第一终端处于非节能模式或者非DRX模式时，所述满足第二抢占条件为：所述RSRP测量值大于或者等于第五门限；
    当所述第一终端处于节能模式或者DRX模式时，所述第二抢占条件为：所述RSRP测量值大于或者等于第六门限。
  26. 根据权利要求16-25任一项所述的方法，其特征在于，所述方法还包括：
    所述第一终端进行资源选择，从候选资源集合中确定用于侧行传输的时频资源，其中，满足第二资源排除条件，为所述第一终端将与第二SCI对应的第二时频资源有重叠的候选资源从所述候选资源集合中排除的一个条件。
  27. 一种通信装置，其特征在于，所述装置用于执行如权利要求1至26中任一项所述的方法。
  28. 一种通信装置，其特征在于，包括处理器，所述处理器与存储器耦合；
    存储器，用于存储计算机程序或指令；
    处理器，用于执行所述存储器中存储的计算机程序或指令，以使得所述装置执行如权利要求1至26中任一项所述的方法。
  29. 一种计算机可读存储介质，其特征在于，包括程序或指令，当所述程序或指令被处理器运行时，如权利要求1至26中任意一项所述的方法被执行。
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