WO2021030960A1 - 确定参考时域单元的方法及装置 - Google Patents

确定参考时域单元的方法及装置 Download PDF

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Publication number
WO2021030960A1
WO2021030960A1 PCT/CN2019/101095 CN2019101095W WO2021030960A1 WO 2021030960 A1 WO2021030960 A1 WO 2021030960A1 CN 2019101095 W CN2019101095 W CN 2019101095W WO 2021030960 A1 WO2021030960 A1 WO 2021030960A1
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Prior art keywords
time domain
target
domain unit
reference time
information
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PCT/CN2019/101095
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English (en)
French (fr)
Inventor
朱亚军
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小米通讯技术有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 小米通讯技术有限公司 filed Critical 小米通讯技术有限公司
Priority to JP2022510095A priority Critical patent/JP7309038B2/ja
Priority to KR1020227007573A priority patent/KR20220045001A/ko
Priority to EP19942393.0A priority patent/EP4016890A4/en
Priority to BR112022002851A priority patent/BR112022002851A2/pt
Priority to CN201980001705.6A priority patent/CN110720252B/zh
Priority to PCT/CN2019/101095 priority patent/WO2021030960A1/zh
Priority to US17/635,287 priority patent/US20220295551A1/en
Publication of WO2021030960A1 publication Critical patent/WO2021030960A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0808—Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/006—Transmission of channel access control information in the downlink, i.e. towards the terminal

Definitions

  • the present disclosure relates to the field of communications, and in particular to a method and device for determining a reference time domain unit.
  • LAA licensed assisted access
  • embodiments of the present disclosure provide a method and device for determining a reference time domain unit.
  • a method for determining a reference time domain unit the method being used for a target device operating in an unlicensed spectrum, the method including:
  • the target channel occupation time is the first channel occupation time before the target device will initiate channel detection
  • the reference time domain unit is determined.
  • the target information includes any one of the following:
  • the base station needs the terminal to feed back the downlink data information of the HARQ result of the hybrid automatic repeat request;
  • the determining the reference time domain unit according to the number of the target information includes:
  • the target information includes the downlink data information that the base station requires the terminal to feed back the HARQ result or the HARQ result information that the terminal needs to feed back
  • the number of the first target information within the target channel occupation time is greater than the predetermined number.
  • the time domain unit with the largest number of the target information within the target channel occupation time is used as the reference time domain unit.
  • the determining the reference time domain unit according to the number of the target information includes:
  • the target information includes the feedback information corresponding to the at least one HARQ process identifier, all time domain units including the target information are used as the reference time domain units.
  • the method further includes:
  • the indication information includes the identifier of the reference time domain unit.
  • an apparatus for determining a reference time domain unit is used for a target device working in an unlicensed spectrum, and includes:
  • the first determining module is configured to determine the number of target information included in each time domain unit within the target channel occupation time; wherein the target channel occupation time is the first channel before the target device is about to initiate channel detection Take up time
  • the second determining module is configured to determine the reference time domain unit according to the number of the target information.
  • the target information includes any one of the following:
  • the base station needs the terminal to feed back the downlink data information of the HARQ result of the hybrid automatic repeat request;
  • the second determining module includes:
  • the first determining submodule is configured to, if the target information includes the downlink data information that the base station requires the terminal to feed back the HARQ result or the HARQ result information that the terminal needs to feed back, the target channel occupation time is the first A time domain unit whose number of the target information is greater than a preset threshold is used as the reference time domain unit; or
  • the second determining sub-module is configured to use as the reference time domain unit all time domain units whose number of the target information within the target channel occupation time is greater than the preset threshold; or
  • the third determining submodule is configured to use the time domain unit with the largest number of the target information within the target channel occupation time as the reference time domain unit.
  • the second determining module includes:
  • the fourth determining submodule is configured to, if the target information includes the feedback information respectively corresponding to the at least one HARQ process identifier, use all time domain units that include the target information as the reference time domain units.
  • the device further includes:
  • the sending module is configured to send indication information to the terminal through target signaling, and the indication information includes the identifier of the reference time domain unit.
  • a computer-readable storage medium stores a computer program, and the computer program is used to execute the method for determining a reference time domain unit described in the first aspect.
  • an apparatus for determining a reference time domain unit is used for a target device working in an unlicensed spectrum, and includes:
  • a memory for storing processor executable instructions
  • the processor is configured to:
  • the target channel occupation time is the first channel occupation time before the target device will initiate channel detection
  • the reference time domain unit is determined.
  • the target device working in the unlicensed spectrum can determine the number of target information included in each time domain unit within the time domain occupied by the target channel.
  • the target channel occupation time is the first channel occupation time before the target device will initiate channel detection.
  • the target device can determine the reference time domain unit in the unlicensed spectrum according to the number of target information.
  • the embodiments of the present disclosure can determine the reference time domain unit under the unlicensed spectrum, so that the contention window length value can be adjusted more accurately, and the performance of the NR-U system can be improved.
  • the target information may include the downlink data information that the base station requires the terminal to feed back the HARQ result of the hybrid automatic repeat request, or the HARQ result information that the terminal needs to feed back, or separate from at least one HARQ process identifier Corresponding feedback information, so that the reference time domain unit can be determined according to the number of different target information mentioned above under the unlicensed spectrum, so as to adjust the contention window length value more accurately and improve the performance of the NR-U system.
  • the target device can set the first target information within the target channel occupation time
  • the time domain unit whose number is greater than the preset threshold is used as the reference time domain unit.
  • the target device may use all the time domain units in which the number of target information within the target channel occupation time is greater than the preset threshold as the reference time domain unit.
  • the target device may also use the time domain unit with the largest number of the target information within the target channel occupation time as the reference time domain unit.
  • the reference time domain unit can be determined more flexibly, and the contention window length value can be adjusted more accurately, which improves the performance of the NR-U system and has high availability.
  • the target device can use all time domain units that include the target information as reference time domain units, thus realizing the unlicensed
  • the purpose of determining the reference time domain unit under the frequency spectrum can more accurately adjust the value of the competition window length, which improves the performance of the NR-U system and has high availability.
  • the target device may also send indication information to the terminal through target signaling, and inform the terminal to refer to the identification of the time domain unit through the indication information.
  • the terminal Before the terminal sends uplink data, it may refer to the target carried in the time domain unit.
  • the information determines the channel detection mechanism with high availability.
  • Fig. 1 is a schematic diagram showing a scenario for adjusting the value of CWS according to an exemplary embodiment.
  • Fig. 2 is a schematic flowchart showing a method for determining a reference time domain unit according to an exemplary embodiment.
  • Fig. 3 is a schematic diagram showing a scenario for determining a reference time domain unit according to an exemplary embodiment.
  • Fig. 4 is a schematic diagram showing another scenario for determining a reference time domain unit according to an exemplary embodiment.
  • Fig. 5 is a schematic diagram showing another scenario for determining a reference time domain unit according to an exemplary embodiment.
  • Fig. 6 is a schematic flowchart showing another method for determining a reference time domain unit according to an exemplary embodiment.
  • Fig. 7 is a block diagram showing a device for determining a reference time domain unit according to an exemplary embodiment.
  • Fig. 8 is a block diagram showing another device for determining a reference time domain unit according to an exemplary embodiment.
  • Fig. 9 is a block diagram showing another device for determining a reference time domain unit according to an exemplary embodiment.
  • Fig. 10 is a block diagram showing another device for determining a reference time domain unit according to an exemplary embodiment.
  • Fig. 11 is a schematic structural diagram of an apparatus for determining a reference time domain unit according to an exemplary embodiment of the present disclosure.
  • Fig. 12 is a schematic structural diagram of another device for determining a reference time domain unit according to an exemplary embodiment of the present disclosure.
  • first, second, third, etc. may be used in this disclosure to describe various information, the information should not be limited to these terms. These terms are only used to distinguish the same type of information from each other.
  • first information may also be referred to as second information, and similarly, the second information may also be referred to as first information.
  • word “if” as used herein can be interpreted as "when” or “when” or "in response to determination”.
  • the LAA In order to ensure coexistence with other communication systems on unlicensed frequency bands, such as WiFi (Wireless Fidelity, wireless fidelity) systems, the LAA also introduces a mechanism that requires channel detection before data transmission. At this time, it is necessary to check whether the channel is idle, and the sender can send data only after the channel is idle. At present, there are multiple channel detection mechanisms. As an example, the channel detection process of downstream transmission can use cat4 (category4, access capability level 4) channel detection mechanism.
  • the channel detection mechanism of cat4 is based on CCA (Clear Channel Assessment) with random backoff.
  • the wireless communication device generates a back-off counter N uniformly and randomly within the value range of [0, S], and listens with (time slot) as the granularity.
  • S is the value of CWS (Contention Window Size), which is a positive integer.
  • the backoff counter will be decremented by one; otherwise, the backoff counter will be suspended if the channel is busy, that is, the backoff counter N will remain unchanged during the channel busy time until the channel is detected to be free .
  • the wireless communication device can immediately occupy the channel.
  • the value of CWS is dynamically adjusted.
  • the wireless communication device dynamically adjusts the value of CWS according to whether the previous transmission is correctly received by the receiving end. In this way, an appropriate CWS value can be obtained according to the channel state and network traffic load adjustment, and a compromise can be achieved between reducing collisions between sending nodes and improving channel access efficiency.
  • the detection parameters of LBT (Listen Before Talk) cat4 such as the adjustment of the value of CWS, are based on HARQ (Hybrid Automatic Repeat reQuest, hybrid automatic repeat request) information.
  • HARQ Hybrid Automatic Repeat reQuest, hybrid automatic repeat request
  • the reference subframe used to adjust the value of CWS is the first subframe in the most recent downlink transmission before the base station will initiate channel detection.
  • the HARQ information in related technologies is transmitted on the licensed spectrum and cannot be applied in NR-U (New Radio-unlicensed, unlicensed new air interface).
  • the value of CWS of cat4 is dynamically adjusted.
  • the CWS for the first channel occupation time of the base station in the competition is 15. If the HARQ for PDSCH (Physical Downlink Shared Channel) transmission on the reference subframe in the first channel occupation time In the feedback, if 80% of the HARQ-ACK status is NACK, the base station will increase the value of CWS to 31, and use this increased CWS to generate a random number N during the next competition for channel occupancy, thereby performing the channel Listen.
  • PDSCH Physical Downlink Shared Channel
  • the priority corresponding to a certain service is 2, and the smallest value among s21, s22, s23... is s21, then the value of the CWS of the service at this time is s21.
  • Step 2 For any LBT, if the base station receives all HARQ results corresponding to all PDSCHs contained in the reference time domain unit k, at least 80% of the HARQ results are NACK (Non-ACKnowledgment, error reception), then Each service priority p corresponding to CWS P is increased to the next higher value corresponding to the service priority in Table 1, and continues to remain in step 2.
  • NACK Non-ACKnowledgment, error reception
  • the reference time domain unit k is the first time domain unit in a downlink transmission closest to the current moment sent by the base station on the current carrier, and the base station can expect to receive the HARQ result feedback from the terminal on the time domain unit.
  • Step 3 If the CWS P has already obtained the corresponding priority CWS maximum value CWS max,P in Table 1, the next adjustment of the CWS value is still CWS max,P .
  • the CWS P corresponding to a certain business priority is adjusted to the maximum value CWS max, P during K consecutive CWS value adjustments and the generation of the rollback counter, then the CWS P of the business priority is reset to the minimum value CWS min,P .
  • K is selected by the base station from the set of positive integers ⁇ 1,2,...,8 ⁇ , and the value of K can be independently selected for each service priority p.
  • the embodiments of the present disclosure provide a method and device for determining a reference time domain unit.
  • FIG. 2 is a flowchart of a method for determining a reference time domain unit according to an embodiment.
  • the method may be used for a target device working in an unlicensed spectrum.
  • the target device may be Base station, the method may include:
  • step 101 the number of target information included in each time domain unit within the target channel occupation time is determined.
  • the target channel occupation time is the target device, that is, the first COT (Channel Occupancy Time) before the base station will initiate channel detection.
  • the time domain unit may be any unit in the time domain, optionally, it may be a symbol, a time slot, a subframe, a radio frame, etc., which is not limited in the present disclosure.
  • the target device may determine the unit of the time domain unit in a predefined manner in the protocol, or may also determine the unit of the time domain unit by receiving signaling. The present disclosure does not limit the determination of the time domain unit. The way of the unit.
  • a reference time domain unit is determined according to the number of the target information.
  • the reference time domain unit for determining the value of the contention window length can be obtained under the unlicensed spectrum, so that the value of the contention window length can be adjusted more accurately, and the performance of the NR-U system can be improved.
  • the target information may be downlink data information sent by the base station, and the downlink data information requires the terminal side to feed back the HARQ result.
  • the target information may also be HARQ result information that the terminal needs to feed back.
  • the target information may also be feedback information corresponding to at least one HARQ process identifier.
  • the target information includes feedback information corresponding to HARQ process identifiers a, b, c..., and the feedback information here may be the feedback information of the terminal and the process.
  • the information corresponding to the identifier may also be the information corresponding to the process identifier to be fed back by the base station.
  • the reference time domain unit may be determined according to the number of different target information in the unlicensed spectrum, so as to adjust the contention window length value more accurately and improve the performance of the NR-U system.
  • step 102 can be implemented in any of the following ways.
  • the first time domain unit whose number of the target information is greater than a preset threshold within the target channel occupation time is used as the reference time domain unit.
  • the target channel occupation time includes multiple time domain units, where the number of target information is greater than the preset threshold time domain unit can be one or more, if the number of target information is greater than the preset threshold time domain If there are multiple units, the base station can use a predefined strategy. For example, if the predefined strategy is the reference time domain unit is the first time domain unit whose number of target information is greater than the preset threshold, the target device directly sets the first target The time domain unit with the number of information greater than the preset threshold is used as the reference time domain unit.
  • a preset threshold d is defined, and d is assumed to be 2, and the reference time domain unit is a time domain unit that is within the target COT and the number of the downlink data information that requires the terminal to feed back the HARQ result is greater than 2.
  • the base station uses a predefined strategy to set the first downlink data that requires the terminal to feed back the HARQ result
  • the time domain unit with the number of information greater than 2 is used as the reference time domain unit.
  • the target channel occupation time includes multiple time domain units, where the number of target information is greater than the preset threshold time domain unit can be one or more, the base station can follow a predefined strategy, such as a predefined
  • the strategy is that the reference time domain unit is a time domain unit whose number of all target information is greater than a preset threshold, and the base station uses all time domain units whose number of target information is greater than the preset threshold as the reference time domain unit.
  • a preset threshold d is defined, and d is assumed to be 4, and the reference time domain unit is a time domain unit that is within the target COT and the number of the downlink data information that requires the terminal to feed back the HARQ result is greater than 4.
  • the base station uses a predefined strategy to send all the downlink data information requiring the terminal to feed back the HARQ result
  • the time domain unit whose number is greater than 4 is used as the reference time domain unit.
  • the time domain unit with the largest number of the target information within the time occupied by the target channel is used as the reference time domain unit.
  • the target channel occupancy time includes multiple time domain units, where the number of target information is greater than the preset threshold time domain unit can be one or more, the base station can according to the preset correspondence relationship, the target information The time domain unit with the largest number is used as the reference time domain unit.
  • the reference time domain unit is the time domain unit with the largest number of the downlink data information that requires the terminal to feed back the HARQ result in the target COT. If there are multiple time domain units that require the terminal to feed back the HARQ result, the number of downlink data information is the same, assuming that it is 4, which is the most. Then the base station can use a predefined strategy to send the first terminal to feedback the HARQ
  • the resultant time domain unit with the number of downlink data information of 4 is used as the target time domain unit, or all time domain units with the maximum number of 4 downlink data information requiring the terminal to feed back the HARQ result are used as the target time domain unit.
  • the base station may use any one of a variety of methods to flexibly determine the reference time domain unit, and adjust the contention window length more accurately. Value, improves the performance of the NR-U system and has high availability.
  • step 102 can also be implemented in any one of the above three ways, which will not be repeated here.
  • the reference time domain unit is a time domain unit whose number of HARQ result information that the terminal needs to feedback is greater than 2 within the target COT.
  • the base station uses a predefined strategy to determine the first one that requires the terminal to feed back the HARQ result and the number of the downlink data information is greater than 2.
  • the time domain unit serves as the reference time domain unit.
  • a preset threshold d assuming that d is 4, the base station can calculate the number of HARQ result information that needs to be fed back by the terminal of the time domain unit on each time domain unit, and the reference time domain unit is that the terminal needs in the target COT The number of HARQ result information fed back is greater than 4 time domain units.
  • the base station uses a predefined strategy to remove all the time domains where the number of the downlink data information that needs the terminal to feed back the HARQ result is greater than 4.
  • the unit serves as the reference time domain unit.
  • the base station may calculate the number of HARQ result information that the terminal of the time domain unit needs to feed back on each time domain unit, and use the time domain unit with the largest number of HARQ result information that the terminal in the target COT needs to feed back as the reference time domain unit. If there are multiple time domain units that require the terminal to feed back the HARQ result, the number of downlink data information is the same, assuming that it is 4, which is the most, then the base station can use a predefined strategy to send the first terminal to the HARQ The time domain unit whose number of result information is 4 is used as the target time domain unit, or the time domain unit whose number of HARQ result information needs to be fed back by all terminals is at most 4 is used as the target time domain unit.
  • the preset threshold may be a positive integer, which is not limited in the present disclosure.
  • the base station can use any of a variety of methods to flexibly determine the reference time domain unit when the target information includes the HARQ result information that the terminal needs to feed back, adjust the contention window length value more accurately, and improve NR- U system performance and high availability.
  • the base station may directly use all time domain units that include the target information as the reference time domain units, and similarly As shown in Figure 4, the availability is high.
  • the target COT includes feedback information corresponding to the HARQ process identifiers a, b, c..., and the base station can count the feedback information corresponding to the HARQ process identifiers on each time domain unit in the target COT, and all include the target The time domain unit of the information serves as the reference time domain unit.
  • FIG. 6 is a flowchart of another data sending method according to the embodiment shown in FIG. 2, and the method further includes:
  • step 103 the indication information is sent to the terminal through target signaling.
  • the indication information includes the identifier of the reference time domain unit, for example, includes the time slot number corresponding to the reference time domain unit.
  • the target signaling may be downlink scheduling signaling, RRC (Radio Resource Control, radio resource control) layer signaling, MAC layer signaling, etc., which is not limited in the present disclosure.
  • the base station may also notify the terminal through indication information after determining the reference time domain unit.
  • the terminal may know the location of the reference time domain unit based on the indication information in the target signaling.
  • the channel detection mechanism can be determined according to the target information carried in the reference time domain unit, with high availability.
  • the target device may also be a terminal.
  • the terminal adopts the above steps 101 to 102 to first determine the number of target information included in each time domain unit within the target channel occupation time, where the target channel occupation time It is the first channel occupation time before the terminal is about to initiate channel detection, and then according to the number of target information, a predefined strategy is used to determine the reference time domain unit.
  • the determination method is the same as that of the base station side. This will not be repeated here.
  • the base station can also use the above steps 101 to 102 to determine the reference time domain unit for the terminal, and send the indication information to the terminal through target signaling. Include the identification of the reference time domain unit.
  • the terminal directly determines the reference time domain unit according to the instruction information sent by the base station.
  • the terminal may determine the number of target information included in each time domain unit within the target channel occupation time by itself, and thereby determine the reference time domain unit according to the number of target information.
  • the base station may determine the parameter time domain unit for the terminal, and the terminal may directly determine the reference time domain unit according to the indication information in the target signaling sent by the base station. The purpose of determining the reference time domain unit under the unlicensed spectrum is realized, the length of the contention window is adjusted more accurately, the performance of the NR-U system is improved, and the availability is high.
  • the present disclosure also provides application function realization apparatus and corresponding terminal embodiments.
  • Fig. 7 is a block diagram showing an apparatus for determining a reference time domain unit according to an exemplary embodiment.
  • the apparatus is used for a target device working in an unlicensed spectrum and includes:
  • the first determining module 210 is configured to determine the number of target information included in each time domain unit within the target channel occupation time; wherein the target channel occupation time is the first one before the target device is about to initiate channel detection Channel occupation time;
  • the second determining module 220 is configured to determine the reference time domain unit according to the number of the target information.
  • the target information includes any one of the following:
  • the base station needs the terminal to feed back the downlink data information of the HARQ result of the hybrid automatic repeat request;
  • FIG. 8 is a block diagram showing another apparatus for determining a reference time domain unit based on the embodiment shown in FIG. 7.
  • the second determining module 220 includes:
  • the first determining submodule 221 is configured to, if the target information includes the downlink data information that the base station requires the terminal to feed back the HARQ result or the HARQ result information that the terminal needs to feed back, calculate the first time within the target channel occupation time.
  • a time domain unit whose number of the target information is greater than a preset threshold is used as the reference time domain unit; or
  • the second determining sub-module 222 is configured to use as the reference time domain unit all time domain units in which the number of the target information within the target channel occupation time is greater than the preset threshold; or
  • the third determining submodule 223 is configured to use the time domain unit with the largest number of the target information within the target channel occupation time as the reference time domain unit.
  • FIG. 9 is a block diagram showing another apparatus for determining a reference time domain unit based on the embodiment shown in FIG. 7.
  • the second determining module 220 includes:
  • the fourth determining submodule 224 is configured to, if the target information includes the feedback information respectively corresponding to the at least one HARQ process identifier, use all time domain units that include the target information as the reference time domain units .
  • FIG. 10 is a block diagram showing another device for determining a reference time domain unit based on the embodiment shown in FIG. 7, and the device further includes:
  • the sending module 230 is configured to send indication information to the terminal through target signaling, and the indication information includes the identifier of the reference time domain unit.
  • the relevant part can refer to the description of the method embodiment.
  • the device embodiments described above are merely illustrative, and the units described above as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one unit. Locally, or it can be distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the present disclosure. Those of ordinary skill in the art can understand and implement it without creative work.
  • the present disclosure also provides a computer-readable storage medium, the storage medium stores a computer program, and the computer program is used to execute any one of the aforementioned methods for determining a reference time domain unit.
  • the present disclosure also provides a device for determining a reference time domain unit.
  • the device is used for a target device working in an unlicensed spectrum, and includes:
  • a memory for storing processor executable instructions
  • the processor is configured to:
  • the target channel occupation time is the first channel occupation time before the target device will initiate channel detection
  • the reference time domain unit is determined.
  • Fig. 11 is a schematic structural diagram of an apparatus 1100 for determining a reference time domain unit according to an exemplary embodiment.
  • the apparatus 1100 may be provided as a target device, and the target device may be a base station.
  • the device 1100 includes a processing component 1122, a wireless transmitting/receiving component 1124, an antenna component 1126, and a signal processing part specific to a wireless interface.
  • the processing component 1122 may further include one or more processors.
  • One of the processors in the processing component 1122 may be configured to execute any of the aforementioned methods for determining a reference time domain unit.
  • Fig. 12 is a block diagram showing an electronic device 1200 for determining a reference time domain unit according to an exemplary embodiment.
  • the electronic device 1200 may be a terminal such as a mobile phone, a tablet computer, an e-book reader, a multimedia playback device, a wearable device, and a vehicle-mounted terminal.
  • the electronic device 1200 may include one or more of the following components: a processing component 1202, a memory 1204, a power supply component 1206, a multimedia component 1208, an audio component 1210, an input/output (I/O) interface 1212, a sensor component 1216, And the communication component 1218.
  • a processing component 1202 a memory 1204, a power supply component 1206, a multimedia component 1208, an audio component 1210, an input/output (I/O) interface 1212, a sensor component 1216, And the communication component 1218.
  • the processing component 1202 generally controls overall operations of the electronic device 1200, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations.
  • the processing component 1202 may include one or more processors 1220 to execute instructions to complete all or part of the steps of the foregoing method.
  • the processing component 1202 may include one or more modules to facilitate the interaction between the processing component 1202 and other components.
  • the processing component 1202 may include a multimedia module to facilitate the interaction between the multimedia component 1208 and the processing component 1202.
  • the processing component 1202 may read executable instructions from the memory to implement the steps of a method for determining a reference time domain unit provided by the foregoing embodiments.
  • the memory 1204 is configured to store various types of data to support operations in the electronic device 1200. Examples of these data include instructions for any application or method operating on the electronic device 1200, contact data, phone book data, messages, pictures, videos, etc.
  • the memory 1204 can be implemented by any type of volatile or non-volatile storage devices or their combination, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable and Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic Disk or Optical Disk.
  • SRAM static random access memory
  • EEPROM electrically erasable programmable read-only memory
  • EPROM erasable and Programmable Read Only Memory
  • PROM Programmable Read Only Memory
  • ROM Read Only Memory
  • Magnetic Memory Flash Memory
  • Magnetic Disk Magnetic Disk or Optical Disk.
  • the power supply component 1206 provides power for various components of the electronic device 1200.
  • the power supply component 1206 may include a power management system, one or more power supplies, and other components associated with the generation, management, and distribution of power for the electronic device 1200.
  • the multimedia component 1208 includes a display screen that provides an output interface between the electronic device 1200 and the user.
  • the multimedia component 1208 includes a front camera and/or a rear camera.
  • the front camera and/or the rear camera can receive external multimedia data.
  • Each front camera and rear camera can be a fixed optical lens system or have focal length and optical zoom capabilities.
  • the audio component 1210 is configured to output and/or input audio signals.
  • the audio component 1210 includes a microphone (MIC).
  • the microphone is configured to receive an external audio signal.
  • the received audio signal may be further stored in the memory 1204 or transmitted via the communication component 1218.
  • the audio component 1210 further includes a speaker for outputting audio signals.
  • the I/O interface 1212 provides an interface between the processing component 1202 and a peripheral interface module.
  • the peripheral interface module may be a keyboard, a click wheel, a button, and the like. These buttons may include but are not limited to: home button, volume button, start button, and lock button.
  • the sensor component 1216 includes one or more sensors for providing the electronic device 1200 with various aspects of state evaluation.
  • the sensor component 1216 can detect the on/off status of the electronic device 1200 and the relative positioning of the components.
  • the component is the display and the keypad of the electronic device 1200, and the sensor component 1216 can also detect the electronic device 1200 or the electronic device 1200.
  • the position of the component changes, the presence or absence of contact between the user and the electronic device 1200, the orientation or acceleration/deceleration of the electronic device 1200, and the temperature change of the electronic device 1200.
  • the sensor assembly 1216 may include a proximity sensor configured to detect the presence of nearby objects when there is no physical contact.
  • the sensor component 1216 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications.
  • the sensor component 12206 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor or a temperature sensor.
  • the communication component 1218 is configured to facilitate wired or wireless communication between the electronic device 1200 and other devices.
  • the electronic device 1200 can access a wireless network based on a communication standard, such as Wi-Fi, 2G, 3G, 4G, or 5G, or a combination thereof.
  • the communication component 1218 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel.
  • the communication component 1218 further includes a near field communication (NFC) module to facilitate short-range communication.
  • NFC near field communication
  • the NFC module can be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.
  • RFID radio frequency identification
  • IrDA infrared data association
  • UWB ultra-wideband
  • Bluetooth Bluetooth
  • the electronic device 1200 may be used by one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPD), programmable logic devices (PLD), field A programmable gate array (FPGA), controller, microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • ASIC application specific integrated circuits
  • DSP digital signal processors
  • DSPD digital signal processing devices
  • PLD programmable logic devices
  • FPGA field A programmable gate array
  • controller microcontroller, microprocessor, or other electronic components are implemented to implement the above methods.
  • non-transitory machine-readable storage medium including instructions, such as the memory 1204 including instructions, which can be executed by the processor 1220 of the electronic device 1200 to complete the determination of the reference time domain unit.
  • the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, etc.

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Abstract

一种确定参考时域单元的方法及装置，其中，该方法包括：确定目标信道占用时间内每个时域单元所包括的目标信息的数目（步骤101）；其中，目标信道占用时间是目标设备即将发起信道检测之前的第一个信道占用时间；根据目标信息的数目，确定参考时域单元（步骤102）。该方法可以在非授权频谱下获得用于确定竞争窗口长度值的参考时域单元，从而可以更加准确地调整竞争窗口长度值，提高NR-U系统的性能。

Description

确定参考时域单元的方法及装置 技术领域
本公开涉及通信领域，尤其涉及确定参考时域单元的方法及装置。
背景技术
在无线通信系统的开发过程中，针对非授权频谱，在3GPP(Third Generation Partnership Project，第三代移动通信合作计划)中，提出了通过LAA(license assisted access，授权频谱辅助接入)的机制来使用非授权频段。也就是说通过授权频段来辅助实现非授权频段上的使用。
发明内容
为克服相关技术中存在的问题，本公开实施例提供一种确定参考时域单元的方法及装置。
根据本公开实施例的第一方面，提供一种确定参考时域单元的方法，所述方法用于工作在非授权频谱下的目标设备，所述方法包括：
确定目标信道占用时间内每个时域单元所包括的目标信息的数目；其中，所述目标信道占用时间是所述目标设备即将发起信道检测之前的第一个信道占用时间；
根据所述目标信息的数目，确定参考时域单元。
可选地，所述目标信息包括以下任一项：
基站需要终端反馈混合自动重传请求HARQ结果的下行数据信息；
所述终端需要反馈的HARQ结果信息；
与至少一个HARQ进程标识分别对应的反馈信息。
可选地，所述根据所述目标信息的数目，确定参考时域单元，包括：
如果所述目标信息包括基站需要终端反馈所述HARQ结果的所述下行数据信息或所述终端需要反馈的HARQ结果信息，将所述目标信道占用 时间内第一个所述目标信息的数目大于预设阈值的时域单元作为所述参考时域单元；或
将所述目标信道占用时间内所有所述目标信息的数目大于所述预设阈值的时域单元作为所述参考时域单元；或
将所述目标信道占用时间内所述目标信息的数目最多的时域单元作为所述参考时域单元。
可选地，所述根据所述目标信息的数目，确定参考时域单元，包括：
如果所述目标信息包括与所述至少一个HARQ进程标识分别对应的所述反馈信息，将所有包括所述目标信息的时域单元作为所述参考时域单元。
可选地，所述方法还包括：
通过目标信令发送指示信息给所述终端，所述指示信息中包括所述参考时域单元的标识。
根据本公开实施例的第二方面，提供一种确定参考时域单元的装置，所述装置用于工作在非授权频谱下的目标设备，包括：
第一确定模块，被配置为确定目标信道占用时间内每个时域单元所包括的目标信息的数目；其中，所述目标信道占用时间是所述目标设备即将发起信道检测之前的第一个信道占用时间；
第二确定模块，被配置为根据所述目标信息的数目，确定参考时域单元。
可选地，所述目标信息包括以下任一项：
基站需要终端反馈混合自动重传请求HARQ结果的下行数据信息；
所述终端需要反馈的HARQ结果信息；
与至少一个HARQ进程标识分别对应的反馈信息。
可选地，所述第二确定模块包括：
第一确定子模块，被配置为如果所述目标信息包括基站需要终端反馈所述HARQ结果的所述下行数据信息或所述终端需要反馈的HARQ结果 信息，将所述目标信道占用时间内第一个所述目标信息的数目大于预设阈值的时域单元作为所述参考时域单元；或
第二确定子模块，被配置为将所述目标信道占用时间内所有所述目标信息的数目大于所述预设阈值的时域单元作为所述参考时域单元；或
第三确定子模块，被配置为将所述目标信道占用时间内所述目标信息的数目最多的时域单元作为所述参考时域单元。
可选地，所述第二确定模块包括：
第四确定子模块，被配置为如果所述目标信息包括与所述至少一个HARQ进程标识分别对应的所述反馈信息，将所有包括所述目标信息的时域单元作为所述参考时域单元。
可选地，所述装置还包括：
发送模块，被配置为通过目标信令发送指示信息给终端，所述指示信息中包括所述参考时域单元的标识。
根据本公开实施例的第三方面，提供一种计算机可读存储介质，所述存储介质存储有计算机程序，所述计算机程序用于执行上述第一方面所述的确定参考时域单元的方法。
根据本公开实施例的第四方面，提供一种确定参考时域单元的装置，所述装置用于工作在非授权频谱下的目标设备，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
确定目标信道占用时间内每个时域单元所包括的目标信息的数目；其中，所述目标信道占用时间是所述目标设备即将发起信道检测之前的第一个信道占用时间；
根据所述目标信息的数目，确定参考时域单元。
本公开的实施例提供的技术方案可以包括以下有益效果：
在本公开实施例中，工作在非授权频谱下的目标设备可以确定目标信 道占用时间内每个时域单元所包括的目标信息的数目。其中，目标信道占用时间是目标设备即将发起信道检测之前的第一个信道占用时间。目标设备可以根据目标信息的数目，来确定非授权频谱中的参考时域单元。本公开实施例可以在非授权频谱下确定参考时域单元，从而可以更加准确地调整竞争窗口长度值，提高NR-U系统的性能。
在本公开实施例中，可选地，目标信息可以包括基站需要终端反馈混合自动重传请求HARQ结果的下行数据信息，或者所述终端需要反馈的HARQ结果信息，或者与至少一个HARQ进程标识分别对应的反馈信息，从而可以在非授权频谱下，根据上述不同的目标信息的数目确定参考时域单元，以便更加准确地调整竞争窗口长度值，提高NR-U系统的性能。
在本公开实施例中，如果目标信息包括基站需要终端反馈所述HARQ结果的所述下行数据信息或所述终端反馈的HARQ结果信息，那么目标设备可以将目标信道占用时间内第一个目标信息的数目大于预设阈值的时域单元作为参考时域单元。或者目标设备可以将目标信道占用时间内所有目标信息的数目大于预设阈值的时域单元都作为参考时域单元。或者目标设备还可以将目标信道占用时间内所述目标信息的数目最多的时域单元作为所述参考时域单元。可以更加灵活的确定参考时域单元，更加准确地调整竞争窗口长度值，提高了NR-U系统的性能，可用性高。
在本公开实施例中，如果目标信息包括与至少一个HARQ进程标识分别对应的所述反馈信息，那么目标设备可以将所有包括该目标信息的时域单元作为参考时域单元，实现了在非授权频谱下确定参考时域单元的目的，更加准确地调整竞争窗口长度值，提高了NR-U系统的性能，可用性高。
在本公开实施例中，目标设备还可以通过目标信令发送指示信息给终端，通过指示信息告知终端参考时域单元的标识，当终端发送上行数据前，可以根据参考时域单元中携带的目标信息确定信道检测机制，可用性高。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性和解释性的，并不能限制本公开。
附图说明
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本发明的实施例，并与说明书一起用于解释本发明的原理。
图1是根据一示例性实施例示出的一种调整CWS取值的场景示意图。
图2是根据一示例性实施例示出的一种确定参考时域单元的方法流程示意图。
图3是根据一示例性实施例示出的一种确定参考时域单元的场景示意图。
图4是根据一示例性实施例示出的另一种确定参考时域单元的场景示意图。
图5是根据一示例性实施例示出的另一种确定参考时域单元的场景示意图。
图6是根据一示例性实施例示出的另一种确定参考时域单元的方法流程示意图。
图7是根据一示例性实施例示出的一种确定参考时域单元的装置框图。
图8是根据一示例性实施例示出的另一种确定参考时域单元的装置框图。
图9是根据一示例性实施例示出的另一种确定参考时域单元的装置框图。
图10是根据一示例性实施例示出的另一种确定参考时域单元的装置框图。
图11是本公开根据一示例性实施例示出的一种确定参考时域单元的装置的一结构示意图。
图12是本公开根据一示例性实施例示出的另一种确定参考时域单元的装置的一结构示意图。
具体实施方式
这里将详细地对示例性实施例进行说明，其示例表示在附图中。下面的描述涉及附图时，除非另有表示，不同附图中的相同数字表示相同或相似的要素。以下示例性实施例中所描述的实施方式并不代表与本发明相一致的所有实施方式。相反，它们仅是与如所附权利要求书中所详述的、本发明的一些方面相一致的装置和方法的例子。
在本公开使用的术语是仅仅出于描述特定实施例的目的，而非旨在限制本公开。在本公开和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。还应当理解，本文中使用的术语“和/或”是指并包含一个或多个相关联的列出项目的任何或所有可能组合。
应当理解，尽管在本公开可能采用术语第一、第二、第三等来描述各种信息，但这些信息不应限于这些术语。这些术语仅用来将同一类型的信息彼此区分开。例如，在不脱离本公开范围的情况下，第一信息也可以被称为第二信息，类似地，第二信息也可以被称为第一信息。取决于语境，如在此所使用的词语“如果”可以被解释成为“在……时”或“当……时”或“响应于确定”。
为了保证与非授权频段上其他通信系统，例如WiFi(Wireless Fidelity，无线保真)系统的共存，在LAA中也引入了在数据发送前需要进行信道检测的机制，发送端在有数据需要发送的时候需要检测信道是否空闲，只有信道处于空闲的状态后，发送端才能发送数据。目前，信道检测的机制有多种，以下行传输的信道检测过程为例，可以使用cat4(category4，接入能力能级4)的信道检测机制。
对于cat4的信道检测机制，是基于随机回退的CCA(Clear Channel Assessment，空闲信道评估)。无线通信设备在[0，S]的取值范围内均匀随机生成一个回退计数器N，并且以(时隙)为粒度进行侦听。其中，S是 CWS(Contention Window Size，竞争窗长度)的取值，为正整数。
如果CCA slot内检测到信道空闲，则将回退计数器减一，反之检测到信道忙碌，则将回退计数器挂起，即回退计数器N在信道忙碌时间内保持不变，直到检测到信道空闲。当回退计数器减为0时无线通信设备可以立即占用该信道。
在cat4中，CWS的值是动态调整的。无线通信设备根据之前的传输是否被接收端正确接收来动态调整CWS的取值。这样可以根据信道状态和网络业务负载调整得到合适的CWS取值，在减小发送节点间碰撞和提升信道接入效率之间取得折中。
在非授权频段上，LBT(Listen Before Talk，先听后发)cat4的检测参数，例如CWS的取值的调整是基于HARQ(Hybrid Automatic Repeat reQuest，混合自动重传请求)信息进行的。相关技术中，对于下行传输而言，用来调整CWS的取值的参考子帧是基站即将发起信道检测之前的最近的一个下行传输中的第一个子帧。但是，相关技术中HARQ信息是在授权频谱上传输的，在NR-U(New Radio-unlicensed，非授权新空口)中无法应用。
相关技术中，cat4的CWS的取值是动态调整的。参照图1所示，基站在竞争第一个信道占用时间的CWS是15，如果在第一个信道占用时间内对于参考子帧上PDSCH(Physical Downlink Shared Channel，物理下行共享信息)的传输的HARQ反馈中，如果有80％的HARQ-ACK状态为NACK，那么基站将CWS的取值调高至31，并在下一次竞争信道占用的时候采用这一调高的CWS生成随机数N，从而进行信道侦听。
CWS的取值调整过程如下：
步骤1，假设有多种业务，对于每种业务的优先级为p，p∈{1,2,3,4}，可以根据表1先将每个业务对应的CWS的取值取与优先级对应的CWS的最小值，即CWS P＝CWS min,P。
表1
优先级 CWS取值
1 s11、s12、s13……
2 s21、s22、s23……
3 s31、s32、s33……
4 s41、s42、s43……
例如，某个业务对应的优先级为2，s21、s22、s23……中的最小值为s21，则该业务此时的CWS的取值就为s21。
步骤2，对于任意一次LBT，如果基站接收到参考时域单元k中所包含的所有PDSCH对应的所有HARQ结果中，至少有80％的HARQ结果为NACK(Non-ACKnowledgment，错误接收)，则将每一种业务优先级p对应CWS P增加到表1中该业务优先级对应的下一个更高的取值，且继续保留在步骤2。
反之如果HARQ结果中NACK的数目未超过80％，则返回步骤1，将每一种业务优先级p对应的CWS P减小至表1中该业务优先级对应的CWS取值的最小值CWS min,P。
其中，参考时域单元k为当前载波上基站发送的距离当前时刻最近的一个下行传输中的第一个时域单元，且基站可以期待接收到终端针对该时域单元上的HARQ结果反馈。
步骤3，如果CWS P已经取到表1中对应的优先级的CWS的最大值CWS max,P，则下一次调整CWS的取值仍然是CWS max,P。
如果某一业务优先级对应的CWS P在连续K次CWS的取值调整以及回退计数器生成中，都取到最大值CWS max,P，则将该业务优先级的CWS P重新设置为最小值CWS min,P。其中，K是基站从{1,2,…,8}的正整数集合中选择的，每种业务优先级p可以独立选择K的取值。
可以看出，相关技术中CWS的取值调整需要基于参考时域单元中的 HARQ信息来确定，但是HARQ是在授权频谱上传输的，无法应用在NR-U中，为了解决这一技术问题，本公开实施例提供了一种确定参考时域单元的方法及装置。
参照图2所示，图2是根据一实施例示出的一种确定参考时域单元的方法流程图，该方法可以用于工作在非授权频谱下的目标设备，可选地，目标设备可以是基站，所述方法可以包括：
在步骤101中，确定目标信道占用时间内每个时域单元所包括的目标信息的数目。
其中，目标信道占用时间是目标设备，即基站即将发起信道检测之前的第一个COT(Channel Occupancy Time，信道占用时间)。时域单元可以是时域上的任意单位，可选地，可以是符号、时隙、子帧、无线帧等等，本公开对此不做限定。在本公开实施例中，目标设备可以通过协议中预先定义的方式确定时域单元的单位，或者还可以采用接收信令的方式确定时域单元的单位，本公开并不限定确定时域单元的单位的方式。
在步骤102中，根据所述目标信息的数目，确定参考时域单元。
上述实施例中，可以在非授权频谱下获得用于确定竞争窗口长度值的参考时域单元，从而可以更加准确地调整竞争窗口长度值，提高NR-U系统的性能。
在一实施例中，目标信息可以是基站发送的下行数据信息且该下行数据信息需要终端侧反馈HARQ结果。或者目标信息还可以是终端需要反馈的HARQ结果信息。或者目标信息还可以是与至少一个HARQ进程标识分别对应的反馈信息，例如目标信息包括与HARQ进程标识a，b，c……分别对应的反馈信息，这里的反馈信息可以是终端反馈的与进程标识对应的信息，也可以是基站要反馈的与进程标识对应的信息。
上述实施例中，可以在非授权频谱下，根据上述不同的目标信息的数目确定参考时域单元，以便更加准确地调整竞争窗口长度值，提高NR-U系统的性能。
在一实施例中，如果目标信息包括需要终端反馈所述HARQ结果的所述下行数据信息，则步骤102可以采用以下方式中的任意一种实现。
第一种方式，将所述目标信道占用时间内第一个所述目标信息的数目大于预设阈值的时域单元作为所述参考时域单元。
参照图3所示，目标信道占用时间内包括多个时域单元，其中目标信息的数目大于预设阈值的时域单元可以为一个或多个，如果目标信息的数目大于预设阈值的时域单元有多个，则基站可以根据预定义的策略，例如预定义的策略为参考时域单元是第一个目标信息的数目大于预设阈值的时域单元，则目标设备直接将第一个目标信息的数目大于预设阈值的时域单元作为参考时域单元。
例如，定义一个预设阈值d，假设d为2，参考时域单元为在目标COT内，需要终端反馈所述HARQ结果的所述下行数据信息的数目大于2的时域单元。当存在多个参考时域单元上需要终端反馈所述HARQ结果的所述下行数据信息的数目大于2时，基站使用预定义的策略将第一个需要终端反馈所述HARQ结果的所述下行数据信息的数目大于2的时域单元作为参考时域单元。
第二种方式，将所述目标信道占用时间内所有所述目标信息的数目大于所述预设阈值的时域单元作为所述参考时域单元。
参照图4所示，目标信道占用时间内包括多个时域单元，其中目标信息的数目大于预设阈值的时域单元可以为一个或多个，基站可以按照预定义的策略，例如预定义的策略为参考时域单元是所有目标信息的数目大于预设阈值的时域单元，则基站将所有目标信息的数目大于预设阈值的时域单元作为参考时域单元。
例如，定义一个预设阈值d，假设d为4，参考时域单元为在目标COT内，需要终端反馈所述HARQ结果的所述下行数据信息的数目大于4的时域单元。当存在多个参考时域单元上需要终端反馈所述HARQ结果的所述下行数据信息的数目大于4时，基站使用预定义的策略，将所有需要终端 反馈所述HARQ结果的所述下行数据信息的数目大于4的时域单元作为参考时域单元。
第三种方式，将所述目标信道占用时间内所述目标信息的数目最多的时域单元作为所述参考时域单元。
参照图5所示，目标信道占用时间内包括多个时域单元，其中目标信息的数目大于预设阈值的时域单元可以为一个或多个，基站可以按照预设对应关系，将其中目标信息的数目最多的时域单元作为参考时域单元。
例如，参考时域单元为在目标COT内，需要终端反馈所述HARQ结果的所述下行数据信息的数目最多的时域单元。如果有多个时域单元需要终端反馈所述HARQ结果的下行数据信息的数目一样，假设为4，都是最多的，那么基站可以使用预定义的策略，将第一个需要终端反馈所述HARQ结果的下行数据信息的数目为4的时域单元作为目标时域单元，或者将所有需要终端反馈所述HARQ结果的下行数据信息的数目最多都为4的时域单元作为目标时域单元。
上述实施例中，基站可以在目标信息包括需要终端反馈所述HARQ结果的所述下行数据信息时，采用多种方式中的任意一种来灵活确定参考时域单元，更加准确地调整竞争窗口长度值，提高了NR-U系统的性能，可用性高。
在一实施例中，如果目标信息包括所述终端需要反馈的HARQ结果信息，则步骤102同样可以采用上述三种方式中的任意一种来实现，在此不再赘述。
例如，定义一个预设阈值d，假设d为2，参考时域单元为在目标COT内，终端需要反馈的HARQ结果信息的数目大于2的时域单元。当存在多个参考时域单元上终端需要反馈的HARQ结果信息的数目大于2时，基站使用预定义的策略将第一个需要终端反馈所述HARQ结果的所述下行数据信息的数目大于2的时域单元作为参考时域单元。
再例如，定义一个预设阈值d，假设d为4，基站可以在每个时域单元 上计算该时域单元终端需要反馈的HARQ结果信息的数目，参考时域单元为在目标COT内终端需要反馈的HARQ结果信息的数目大于4的时域单元。当存在多个参考时域单元上终端需要反馈的HARQ结果信息的数目大于4时，基站使用预定义的策略将所有需要终端反馈所述HARQ结果的所述下行数据信息的数目大于4的时域单元作为参考时域单元。
再例如，基站可以在每个时域单元上计算该时域单元终端需要反馈的HARQ结果信息的数目，将目标COT内终端需要反馈所述HARQ结果信息的数目最多的时域单元作为参考时域单元。如果有多个时域单元需要终端反馈所述HARQ结果的下行数据信息的数目一样，假设为4，都是最多的，那么基站可以使用预定义的策略，将第一个终端需要反馈所述HARQ结果信息的数目为4的时域单元作为目标时域单元，或者将所有终端需要反馈所述HARQ结果信息的数目最多都为4的时域单元作为目标时域单元。本公开实施例中预设阈值可以是正整数，本公开对此不做限定。
上述实施例中，基站可以在目标信息包括终端需要反馈的HARQ结果信息时，采用多种方式中的任意一种来灵活确定参考时域单元，更加准确地调整竞争窗口长度值，提高了NR-U系统的性能，可用性高。
在一实施例中，如果目标信息包括与所述至少一个HARQ进程标识分别对应的所述反馈信息，那么基站可以直接将所有包括所述目标信息的时域单元作为所述参考时域单元，同样如图4所示，可用性高。
例如，目标COT内包括与HARQ进程标识a，b，c……分别对应的反馈信息，基站可以统计目标COT内每个时域单元上与HARQ进程标识对应的反馈信息，将所有包括所述目标信息的时域单元作为所述参考时域单元。在一实施例中，参照图6所示，图6是根据图2所示的实施例示出的另一种数据发送方法流程图，所述方法还包括：
在步骤103中，通过目标信令发送指示信息给所述终端。
其中，所述指示信息中包括所述参考时域单元的标识，例如包括该参考时域单元对应的时隙编号。可选地，目标信令可以是下行调度信令、RRC (Radio Resource Control，无线资源控制)层信令，MAC层信令等，本公开对此不做限定。
目标设备为基站时，基站还可以在确定了参考时域单元之后，通过指示信息告知终端，终端可以基于目标信令中的指示信息得知参考时域单元所在的位置，当终端发送上行数据前，可以根据参考时域单元中携带的目标信息确定信道检测机制，可用性高。
在一实施例中，可选地，目标设备还可以是终端，终端采用上述步骤101至102，先确定目标信道占用时间内每个时域单元所包括的目标信息的数目，其中目标信道占用时间是终端即将发起信道检测之前的第一个信道占用时间，然后根据目标信息的数目，采用预定义的策略，确定出参考时域单元，确定方式与基站侧确定参考时域单元的方式相同，在此不再赘述。
另外，终端在确定参考时域单元时，除了上述方式之外，还可以由基站采用上述步骤101至102为终端确定参考时域单元，并通过目标信令将指示信息发送给终端，指示信息中包括参考时域单元的标识。终端直接根据基站发送的指示信息，确定参考时域单元。
上述实施例中，终端可以由自身确定目标信道占用时间内每个时域单元所包括的目标信息的数目，从而根据目标信息的数目确定出参考时域单元。或者可以由基站为终端确定参数时域单元，终端根据基站发送的目标信令中的指示信息，直接确定参考时域单元即可。实现了在非授权频谱下确定参考时域单元的目的，更加准确地调整竞争窗口长度值，提高了NR-U系统的性能，可用性高。
与前述应用功能实现方法实施例相对应，本公开还提供了应用功能实现装置、及相应的终端的实施例。
参照图7，图7是根据一示例性实施例示出的一种确定参考时域单元的装置框图，所述装置用于工作在非授权频谱下的目标设备，包括：
第一确定模块210，被配置为确定目标信道占用时间内每个时域单元所包括的目标信息的数目；其中，所述目标信道占用时间是所述目标设备 即将发起信道检测之前的第一个信道占用时间；
第二确定模块220，被配置为根据所述目标信息的数目，确定参考时域单元。
可选地，所述目标信息包括以下任一项：
基站需要终端反馈混合自动重传请求HARQ结果的下行数据信息；
所述终端需要反馈的HARQ结果信息；
与至少一个HARQ进程标识分别对应的反馈信息。
参照图8，图8是根据图7所示实施例的基础上示出的另一种确定参考时域单元的装置框图，所述第二确定模块220包括：
第一确定子模块221，被配置为如果所述目标信息包括基站需要终端反馈所述HARQ结果的所述下行数据信息或所述终端需要反馈的HARQ结果信息，将所述目标信道占用时间内第一个所述目标信息的数目大于预设阈值的时域单元作为所述参考时域单元；或
第二确定子模块222，被配置为将所述目标信道占用时间内所有所述目标信息的数目大于所述预设阈值的时域单元作为所述参考时域单元；或
第三确定子模块223，被配置为将所述目标信道占用时间内所述目标信息的数目最多的时域单元作为所述参考时域单元。
参照图9，图9是根据图7所示实施例的基础上示出的另一种确定参考时域单元的装置框图，所述第二确定模块220包括：
第四确定子模块224，被配置为如果所述目标信息包括与所述至少一个HARQ进程标识分别对应的所述反馈信息，将所有包括所述目标信息的时域单元作为所述参考时域单元。
参照图10，图10是根据图7所示实施例的基础上示出的另一种确定参考时域单元的装置框图，所述装置还包括：
发送模块230，被配置为通过目标信令发送指示信息给所述终端，所述指示信息中包括所述参考时域单元的标识。
对于装置实施例而言，由于其基本对应于方法实施例，所以相关之处 参见方法实施例的部分说明即可。以上所描述的装置实施例仅仅是示意性的，其中上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模块来实现本公开方案的目的。本领域普通技术人员在不付出创造性劳动的情况下，即可以理解并实施。
相应地，本公开还提供了一种计算机可读存储介质，所述存储介质存储有计算机程序，所述计算机程序用于执行上述任一所述的确定参考时域单元的方法。
相应地，本公开还提供了一种确定参考时域单元的装置，所述装置用于工作在非授权频谱下的目标设备，包括：
处理器；
用于存储处理器可执行指令的存储器；
其中，所述处理器被配置为：
确定目标信道占用时间内每个时域单元所包括的目标信息的数目；其中，所述目标信道占用时间是所述目标设备即将发起信道检测之前的第一个信道占用时间；
根据所述目标信息的数目，确定参考时域单元。
如图11所示，图11是根据一示例性实施例示出的一种确定参考时域单元的装置1100的一结构示意图。装置1100可以被提供为目标设备，该目标设备可以是基站。参照图11，装置1100包括处理组件1122、无线发射/接收组件1124、天线组件1126、以及无线接口特有的信号处理部分，处理组件1122可进一步包括一个或多个处理器。
处理组件1122中的其中一个处理器可以被配置为用于执行上述任一所述的确定参考时域单元的方法。
如图12所示，图12是根据一示例性实施例示出的一种确定参考时域单元的电子设备1200的框图。例如电子设备1200可以是手机、平板电脑、 电子书阅读器、多媒体播放设备、可穿戴设备、车载终端等终端。
参照图12，电子设备1200可以包括以下一个或多个组件：处理组件1202，存储器1204，电源组件1206，多媒体组件1208，音频组件1210，输入/输出(I/O)接口1212，传感器组件1216，以及通信组件1218。
处理组件1202通常控制电子设备1200的整体操作，诸如与显示，电话呼叫，数据通信，相机操作和记录操作相关联的操作。处理组件1202可以包括一个或多个处理器1220来执行指令，以完成上述的方法的全部或部分步骤。此外，处理组件1202可以包括一个或多个模块，便于处理组件1202和其他组件之间的交互。例如，处理组件1202可以包括多媒体模块，以方便多媒体组件1208和处理组件1202之间的交互。又如，处理组件1202可以从存储器读取可执行指令，以实现上述各实施例提供的一种确定参考时域单元的方法的步骤。
存储器1204被配置为存储各种类型的数据以支持在电子设备1200的操作。这些数据的示例包括用于在电子设备1200上操作的任何应用程序或方法的指令，联系人数据，电话簿数据，消息，图片，视频等。存储器1204可以由任何类型的易失性或非易失性存储设备或者它们的组合实现，如静态随机存取存储器(SRAM)，电可擦除可编程只读存储器(EEPROM)，可擦除可编程只读存储器(EPROM)，可编程只读存储器(PROM)，只读存储器(ROM)，磁存储器，快闪存储器，磁盘或光盘。
电源组件1206为电子设备1200的各种组件提供电力。电源组件1206可以包括电源管理系统，一个或多个电源，及其他与为电子设备1200生成、管理和分配电力相关联的组件。
多媒体组件1208包括在所述电子设备1200和用户之间的提供一个输出接口的显示屏。在一些实施例中，多媒体组件1208包括一个前置摄像头和/或后置摄像头。当电子设备1200处于操作模式，如拍摄模式或视频模式时，前置摄像头和/或后置摄像头可以接收外部的多媒体数据。每个前置摄像头和后置摄像头可以是一个固定的光学透镜系统或具有焦距和光学变 焦能力。
音频组件1210被配置为输出和/或输入音频信号。例如，音频组件1210包括一个麦克风(MIC)，当电子设备1200处于操作模式，如呼叫模式、记录模式和语音识别模式时，麦克风被配置为接收外部音频信号。所接收的音频信号可以被进一步存储在存储器1204或经由通信组件1218发送。在一些实施例中，音频组件1210还包括一个扬声器，用于输出音频信号。
I/O接口1212为处理组件1202和外围接口模块之间提供接口，上述外围接口模块可以是键盘，点击轮，按钮等。这些按钮可包括但不限于：主页按钮、音量按钮、启动按钮和锁定按钮。
传感器组件1216包括一个或多个传感器，用于为电子设备1200提供各个方面的状态评估。例如，传感器组件1216可以检测到电子设备1200的打开/关闭状态，组件的相对定位，例如所述组件为电子设备1200的显示器和小键盘，传感器组件1216还可以检测电子设备1200或电子设备1200一个组件的位置改变，用户与电子设备1200接触的存在或不存在，电子设备1200方位或加速/减速和电子设备1200的温度变化。传感器组件1216可以包括接近传感器，被配置用来在没有任何的物理接触时检测附近物体的存在。传感器组件1216还可以包括光传感器，如CMOS或CCD图像传感器，用于在成像应用中使用。在一些实施例中，该传感器组件12206还可以包括加速度传感器，陀螺仪传感器，磁传感器，压力传感器或温度传感器。
通信组件1218被配置为便于电子设备1200和其他设备之间有线或无线方式的通信。电子设备1200可以接入基于通信标准的无线网络，如Wi-Fi，2G，3G，4G或5G，或它们的组合。在一个示例性实施例中，通信组件1218经由广播信道接收来自外部广播管理系统的广播信号或广播相关信息。
在一个示例性实施例中，所述通信组件1218还包括近场通信(NFC)模块，以促进短程通信。例如，在NFC模块可基于射频识别(RFID)技 术，红外数据协会(IrDA)技术，超宽带(UWB)技术，蓝牙(BT)技术和其他技术来实现。
在示例性实施例中，电子设备1200可以被一个或多个应用专用集成电路(ASIC)、数字信号处理器(DSP)、数字信号处理设备(DSPD)、可编程逻辑器件(PLD)、现场可编程门阵列(FPGA)、控制器、微控制器、微处理器或其他电子元件实现，用于执行上述方法。
在示例性实施例中，还提供了一种包括指令的非临时性机器可读存储介质，例如包括指令的存储器1204，上述指令可由电子设备1200的处理器1220执行以完成上述确定参考时域单元的方法。例如，所述非临时性计算机可读存储介质可以是ROM、随机存取存储器(RAM)、CD-ROM、磁带、软盘和光数据存储设备等。
本领域技术人员在考虑说明书及实践这里公开的发明后，将容易想到本公开的其它实施方案。本公开旨在涵盖本公开的任何变型、用途或者适应性变化，这些变型、用途或者适应性变化遵循本公开的一般性原理并包括本公开未公开的本技术领域中的公知常识或者惯用技术手段。说明书和实施例仅被视为示例性的，本公开的真正范围和精神由下面的权利要求指出。
应当理解的是，本公开并不局限于上面已经描述并在附图中示出的精确结构，并且可以在不脱离其范围进行各种修改和改变。本公开的范围仅由所附的权利要求来限制。

Claims (12)

  1. 一种确定参考时域单元的方法，其特征在于，所述方法用于工作在非授权频谱下的目标设备，包括：
    确定目标信道占用时间内每个时域单元所包括的目标信息的数目；其中，所述目标信道占用时间是所述目标设备即将发起信道检测之前的第一个信道占用时间；
    根据所述目标信息的数目，确定参考时域单元。
  2. 根据权利要求1所述的方法，其特征在于，所述目标信息包括以下任一项：
    基站需要终端反馈混合自动重传请求HARQ结果的下行数据信息；
    所述终端需要反馈的HARQ结果信息；
    与至少一个HARQ进程标识分别对应的反馈信息。
  3. 根据权利要求2所述的方法，其特征在于，所述根据所述目标信息的数目，确定参考时域单元，包括：
    如果所述目标信息包括基站需要终端反馈所述HARQ结果的所述下行数据信息或所述终端需要反馈的HARQ结果信息，将所述目标信道占用时间内第一个所述目标信息的数目大于预设阈值的时域单元作为所述参考时域单元；或
    将所述目标信道占用时间内所有所述目标信息的数目大于所述预设阈值的时域单元作为所述参考时域单元；或
    将所述目标信道占用时间内所述目标信息的数目最多的时域单元作为所述参考时域单元。
  4. 根据权利要求2所述的方法，其特征在于，所述根据所述目标信息的数目，确定参考时域单元，包括：
    如果所述目标信息包括与所述至少一个HARQ进程标识分别对应的所述反馈信息，将所有包括所述目标信息的时域单元作为所述参考时域单 元。
  5. 根据权利要求1所述的方法，其特征在于，所述方法还包括：
    通过目标信令发送指示信息给终端，所述指示信息中包括所述参考时域单元的标识。
  6. 一种确定参考时域单元的装置，其特征在于，所述装置用于工作在非授权频谱下的目标设备，包括：
    第一确定模块，被配置为确定目标信道占用时间内每个时域单元所包括的目标信息的数目；其中，所述目标信道占用时间是所述目标设备即将发起信道检测之前的第一个信道占用时间；
    第二确定模块，被配置为根据所述目标信息的数目，确定参考时域单元。
  7. 根据权利要求6所述的装置，其特征在于，所述目标信息包括以下任一项：
    基站需要终端反馈混合自动重传请求HARQ结果的下行数据信息；
    所述终端需要反馈的HARQ结果信息；
    与至少一个HARQ进程标识分别对应的反馈信息。
  8. 根据权利要求7所述的装置，其特征在于，所述第二确定模块包括：
    第一确定子模块，被配置为如果所述目标信息包括基站需要终端反馈所述HARQ结果的所述下行数据信息或所述终端需要反馈的HARQ结果信息，将所述目标信道占用时间内第一个所述目标信息的数目大于预设阈值的时域单元作为所述参考时域单元；或
    第二确定子模块，被配置为将所述目标信道占用时间内所有所述目标信息的数目大于所述预设阈值的时域单元作为所述参考时域单元；或
    第三确定子模块，被配置为将所述目标信道占用时间内所述目标信息的数目最多的时域单元作为所述参考时域单元。
  9. 根据权利要求7所述的装置，其特征在于，所述第二确定模块包括：
    第四确定子模块，被配置为如果所述目标信息包括与所述至少一个 HARQ进程标识分别对应的所述反馈信息，将所有包括所述目标信息的时域单元作为所述参考时域单元。
  10. 根据权利要求6所述的装置，其特征在于，所述装置还包括：
    发送模块，被配置为通过目标信令发送指示信息给终端，所述指示信息中包括所述参考时域单元的标识。
  11. 一种计算机可读存储介质，其特征在于，所述存储介质存储有计算机程序，所述计算机程序用于执行上述权利要求1-5任一项所述的确定参考时域单元的方法。
  12. 一种确定参考时域单元的装置，其特征在于，所述装置用于工作在非授权频谱下的目标设备，包括：
    处理器；
    用于存储处理器可执行指令的存储器；
    其中，所述处理器被配置为：
    确定目标信道占用时间内每个时域单元所包括的目标信息的数目；其中，所述目标信道占用时间是所述目标设备即将发起信道检测之前的第一个信道占用时间；
    根据所述目标信息的数目，确定参考时域单元。
PCT/CN2019/101095 2019-08-16 2019-08-16 确定参考时域单元的方法及装置 WO2021030960A1 (zh)

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