WO2020063167A1 - 竞争窗口大小调节方法和网络设备 - Google Patents

竞争窗口大小调节方法和网络设备 Download PDF

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Publication number
WO2020063167A1
WO2020063167A1 PCT/CN2019/100534 CN2019100534W WO2020063167A1 WO 2020063167 A1 WO2020063167 A1 WO 2020063167A1 CN 2019100534 W CN2019100534 W CN 2019100534W WO 2020063167 A1 WO2020063167 A1 WO 2020063167A1
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Prior art keywords
basic bandwidth
cws
basic
harq
bandwidth
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English (en)
French (fr)
Inventor
鲁智
姜蕾
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Vivo Mobile Communication Co Ltd
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Vivo Mobile Communication Co Ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/121—Wireless traffic scheduling for groups of terminals or users
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]

Definitions

  • the present application relates to the field of communications, and in particular, to a contention window size (CWS) adjustment method and a network device.
  • CWS contention window size
  • the terminal device After receiving the physical downlink shared channel (PDSCH), the terminal device usually needs to feedback a Hybrid Automatic Repeat Request (HARQ) response.
  • the HARQ response includes an acknowledgment (ACKnowledgement, ACK) and a negative response. (Negative-ACKnowledgment, NACK), etc.
  • ACK acknowledgement
  • NACK Negative-ACKnowledgment
  • New wireless or New Radio supports broadband operations greater than 20M.
  • network devices can currently schedule multiple basic bandwidths for terminal devices, but the next time, network devices will still be based on each basic bandwidth. Listen before talk (LBT) for the unit. Therefore, the network device needs to adjust the CWS corresponding to each basic bandwidth when scheduling multiple basic bandwidths.
  • LBT Listen before talk
  • the related art does not provide a related solution for adjusting CWS in a broadband operation scenario. Therefore, how to adjust the CWS in a broadband operation scenario is a technical problem that the related technologies need to solve urgently.
  • the purpose of some embodiments of the present disclosure is to provide a CWS adjustment method in unlicensed spectrum transmission for adjusting CWS in a broadband operation scenario.
  • a CWS adjustment method in unlicensed spectrum transmission is provided.
  • the method is performed by a network device.
  • the method includes: receiving multiple HARQ responses, and downlink channels corresponding to the multiple HARQ responses are in a reference time unit.
  • One or / or multiple basic bandwidths are occupied internally; the number of HARQ responses for one basic bandwidth is determined; and the CWS corresponding to the one basic bandwidth is adjusted based on the ratio of NACKs in the one basic bandwidth.
  • a network device including: a receiving module configured to receive multiple HARQ responses, and the downlink channels corresponding to the multiple HARQ responses occupy one and / or multiple basic bandwidths within a reference time unit; A determining module is configured to determine the number of HARQ responses of a basic bandwidth; a CWS adjustment module is configured to adjust a CWS corresponding to the one basic bandwidth based on a ratio of NACKs in the one basic bandwidth.
  • a network device includes a processor, a memory, and a computer program stored on the memory and executable on the processor.
  • the computer program is executed by the processor, The steps of implementing the CWS adjustment method in the unlicensed spectrum transmission according to the first aspect.
  • a computer-readable storage medium stores a computer program that, when executed by a processor, implements CWS adjustment in the unlicensed spectrum transmission according to the first aspect. Method steps.
  • the network device may determine the number of HARQ responses of the basic bandwidth and adjust the CWS based on the ratio of NACK in the basic bandwidth, thereby solving the problem of adjusting the CWS in a broadband operation scenario. , Which is conducive to improving the utilization efficiency of unlicensed frequency bands.
  • FIG. 1 is a schematic flowchart of a CWS adjustment method in unlicensed spectrum transmission according to an embodiment of the present disclosure
  • FIG. 2 is a schematic flowchart of a CWS adjustment method in unlicensed spectrum transmission according to another embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of PDSCH occupying multiple basic bandwidths according to an embodiment of the present disclosure
  • FIG. 4 is a schematic flowchart of a CWS adjustment method in unlicensed spectrum transmission according to still another embodiment of the present disclosure
  • FIG. 5 is a schematic flowchart of a CWS adjustment method in unlicensed spectrum transmission according to still another embodiment of the present disclosure
  • FIG. 6 is a schematic flowchart of a CWS adjustment method in unlicensed spectrum transmission according to a next embodiment of the present disclosure
  • FIG. 7 is a schematic structural diagram of a network device according to an embodiment of the present disclosure.
  • FIG. 8 is a schematic structural diagram of a network device according to another embodiment of the present disclosure.
  • GSM Global System for Mobile
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • UMTS Universal Mobile Telecommunication System
  • WiMAX Worldwide Interoperability for Microwave Access
  • the terminal device may include, but is not limited to, a mobile station (MS), a mobile terminal (Mobile), a mobile phone (Mobile), a user equipment (User Equipment, UE), and a mobile phone ( handset), portable equipment (portable equipment), vehicles (vehicle), etc.
  • the terminal equipment can communicate with one or more core networks via a Radio Access Network (RAN), for example, the terminal equipment can be a mobile phone (Also known as a “cellular” phone), a computer with wireless communication capabilities, etc.
  • the terminal device may also be a portable, pocket-sized, handheld, computer-built or vehicle-mounted mobile device.
  • the network device is a device that is deployed in a wireless access network to provide a wireless communication function for a terminal device.
  • the network device may be a base station, and the base station may include various forms of macro base stations, micro base stations, relay stations, access points, and the like.
  • the names of devices with base station capabilities may vary.
  • eNB Evolved NodeB
  • 3G 3rd Generation
  • Node B Node B
  • Network equipment, etc. but the wording does not constitute a restriction.
  • network equipment can schedule multiple basic bandwidths simultaneously to improve transmission efficiency.
  • the HARQ response fed back by the terminal device since it is still unknown in which basic bandwidth the HARQ response fed back by the terminal device should be allocated, it is impossible to adjust the CWS based on the ratio of NACK in the basic bandwidth.
  • an embodiment of the present disclosure provides a CWS adjustment method 100 in un-license spectrum transmission for adjusting CWS in a broadband operation scenario.
  • This method embodiment 100 can be executed by a network device and includes the following steps:
  • S102 Receive multiple HARQ responses, and the downlink channels corresponding to the multiple HARQ responses occupy one and / or multiple basic bandwidths within a reference time unit.
  • the multiple HARQ responses are sent by the terminal device based on the received downlink channels.
  • These downlink channels include, for example, Physical Downlink Control Channel (PDCCH), Physical Downlink Shared Channel (PDSCH), etc .
  • the network device Before step S102, the network device will send a downlink channel to a different terminal device within a reference time unit. In this way, after receiving the downlink channel, the terminal device can feedback a HARQ response to inform the network device whether the reception is correct and assist the network device to perform Determine if subsequent retransmissions are required.
  • the multiple HARQ responses are feedbacks from the terminal device on the downlink channel sent by the network device within the reference time unit.
  • the above reference time unit may be a start time slot that the network device executes most recently and includes at least one downlink transmission time slot.
  • the HARQ response includes ACK, NACK, or Discontinuous Transmission (DTX).
  • the basic bandwidth mentioned in the embodiments of the present disclosure may have a frequency range of 20 MHz, and may specifically be a component carrier in carrier aggregation.
  • Carrier aggregation may use multiple component carriers to perform uplink or downlink transmission. For example, three 20-MHz component carriers are aggregated to support a 60-MHz bandwidth transmission, and the multiple component carriers may be adjacent to each other or not adjacent to each other in the frequency domain.
  • the multiple HARQ responses received in step S102 are usually from multiple terminal devices, and for the above multiple terminal devices:
  • the network device may schedule multiple basic bandwidths for some terminal devices within a reference time unit; at the same time, only one basic bandwidth may be scheduled for other terminal devices.
  • the network device may also schedule multiple basic bandwidths for each of the multiple terminal devices in the reference time unit.
  • the network device may also schedule a basic bandwidth for the multiple terminal devices in the reference time unit, that is, the network device does not schedule any one terminal device to span multiple basic bandwidths in the reference time unit.
  • the network device may also schedule a basic bandwidth for the multiple terminal devices in the reference time unit, that is, the network device does not schedule any one terminal device to span multiple basic bandwidths in the reference time unit.
  • some embodiments of the present disclosure do not limit how many basic bandwidths the network device schedules.
  • S104 Determine the number of HARQ responses of a basic bandwidth.
  • the network device may allocate HARQ responses (specifically, the number of HARQ responses) for each basic bandwidth based on the received multiple HARQ responses.
  • the multiple HARQ responses include a first HARQ response and a second HARQ response, wherein a downlink channel corresponding to the first HARQ response occupies a basic bandwidth within a reference time unit; a downlink channel corresponding to the second HARQ response is at all The reference time unit occupies multiple basic bandwidths.
  • the number of the first HARQ response is usually allocated to a corresponding basic bandwidth, and does not need to be allocated to other basic bandwidths. The following describes how to allocate the number of second HARQs among the multiple basic bandwidths.
  • the multiple HARQ responses received by the network device include N second HARQ responses, and the downlink channels corresponding to the N second HARQ responses all occupy M of the same basic bandwidth in the reference time unit, and M and N are both Is an integer greater than 2.
  • the network device may allocate N / M second HARQ responses for one basic bandwidth, that is, the network device allocates the received second HARQ responses evenly for one basic bandwidth.
  • the network device may allocate N second HARQ responses for one basic bandwidth, that is, all the second HARQ responses received for one basic bandwidth.
  • the network device may allocate the second HARQ responses fed back by some terminal devices to one basic bandwidth, allocate the second HARQ responses fed back from other terminal devices to another basic bandwidth, and so on.
  • the network device may regard the HARQ response of the terminal device as a DTX state.
  • the network device may use DTX as a NACK for statistics.
  • the network device only counts DTX as one NACK, so as to avoid the problem of repeated statistics caused by the terminal device's subsequent successful feedback of the HARQ response for the downlink channel.
  • the network device may not perform statistics on DTX as a NACK. Whether DXT is counted as NACK may depend on the specific implementation scenario and specific implementation requirements of this embodiment, and is not limited here.
  • one basic bandwidth is mentioned in this step and subsequent steps, and if the downlink channels corresponding to the multiple HARQ responses received occupy a basic bandwidth within the reference time unit, the “one basic bandwidth” here "Refers to the above-mentioned one basic bandwidth; if the downlink channels corresponding to the received multiple HARQ responses occupy multiple basic bandwidths within the reference time unit, the" one basic bandwidth "here may refer to the above-mentioned multiple basic bandwidths. Either basic bandwidth.
  • steps S104 and S106 of this embodiment that the number of HARQ responses for one basic bandwidth is determined, and the CWS is adjusted based on the ratio of NACK in the basic bandwidth.
  • the method provided in this embodiment can be used to determine the number of HARQ responses for each basic bandwidth, and adjust the CWS based on the ratio of NACK in each basic bandwidth.
  • the "adjustment” in it can also be replaced with other terms, for example, “adjust” the CWS, “increase or decrease” the CWS, or “control” the CWS, and so on.
  • the number of HARQ responses for each basic bandwidth can be determined through step S104. Since the HARQ response includes a NACK, this step can target each basic bandwidth:
  • the CWS corresponding to the basic bandwidth is set to the minimum value of the current priority level.
  • the above reference value may specifically be 50%, 80%, or the like.
  • adjusting the CWS corresponding to the basic bandwidth to the next higher allowable value of the current priority level and maintaining the increased value may include:
  • the ratio of the NACK in the basic bandwidth is equal to or greater than the reference value, and the CWS is less than the maximum CWS, adjust the CWS corresponding to the basic bandwidth to a higher allowable value under the current priority level and maintain the increased value; or
  • the CWS corresponding to the basic bandwidth is maintained as the maximum CWS.
  • step S106 shows a specific implementation manner of the foregoing step S106.
  • step S106 may also be implemented in other manners, and some embodiments of the present disclosure are not limited thereto.
  • a network device when a network device receives multiple HARQ responses, it can determine the number of HARQ responses for each basic bandwidth, and based on the ratio of NACKs in each basic bandwidth Adjusting the CWS solves the problem of adjusting the CWS in a broadband operation scenario and is beneficial to improving the utilization efficiency of the unlicensed frequency band.
  • another embodiment of the present disclosure provides a CWS adjustment method 200 in unlicensed spectrum transmission for adjusting CWS in a broadband operation scenario.
  • the method may be performed by a network device and includes the following steps:
  • S202 Receive multiple HARQ responses, where the multiple HARQ responses include a first HARQ response and a second HARQ response.
  • the downlink channel corresponding to the first HARQ response occupies one basic bandwidth in the reference time unit; the downlink channel corresponding to the second HARQ response occupies multiple basic bandwidths in the reference time unit.
  • the multiple HARQ responses are feedbacks from the terminal device on the downlink channel sent by the network device within the reference time unit.
  • the above reference time unit may be a start time slot that the network device executes most recently and includes at least one downlink transmission time slot.
  • the HARQ response includes ACK, NACK, or DTX.
  • the network device may regard the HARQ response of the terminal device as a DTX state.
  • the network device may use DTX as a NACK for statistics.
  • the network device only counts DTX as one NACK, so as to avoid the problem of repeated statistics caused by the terminal device's subsequent successful feedback of the HARQ response for the downlink channel.
  • the network device may not perform statistics on DTX as a NACK. Whether DXT is counted as NACK may depend on the specific implementation scenario and specific implementation requirements of this embodiment, and is not limited here.
  • S204 Allocate the second HARQ response to the multiple basic bandwidths according to a preset ratio.
  • the number of HARQ responses of a basic bandwidth, the number of first HARQ responses corresponding to the basic bandwidth, and the number of the second HARQ responses plus a preset weight are related.
  • the preset weight is equal to an inverse of the number of the plurality of basic bandwidths.
  • the first HARQ response received is allocated to the basic bandwidth; in special cases, there may be no terminal device that schedules a basic bandwidth, That is, the network device schedules multiple basic bandwidths for the terminal device within a reference time unit.
  • the received second HARQ response is allocated to the multiple basic bandwidths according to a preset ratio (equivalent to the above plus a preset weight).
  • the preset ratio here may be Equal proportions can also be any other proportion.
  • the network device schedules 2 basic bandwidths for the terminal A in the reference time unit, that is, the PDSCH sent by the network device to the terminal A in the reference time unit occupies two basic bandwidths, each of which is 20MHZ, which is called the first basic bandwidth (one in the high frequency domain) and the second basic bandwidth (one in the low frequency domain).
  • terminal A feeds back an eight-bit HARQ response of 00100000 (that is, the second HARQ response described above), which can indicate that the network device sends data through eight CBGs, that is, the first CBG to the eighth CBG, and the terminal device fails to decode the third CBG.
  • the above 1 indicates that decoding has failed, and 0 indicates that decoding has succeeded.
  • step S204 for each terminal device that schedules multiple basic bandwidths, the second HARQ response received is allocated to the above according to a preset ratio. Multiple basic bandwidths, and finally the sum of the number of second HARQ responses allocated to each basic bandwidth and the number of first HARQ responses corresponding to the basic bandwidth are taken as the number of HARQ responses in each basic bandwidth.
  • the preset ratio is an inverse of the number of the plurality of basic bandwidths, that is, the second HARQ response received is evenly allocated to each basic bandwidth.
  • the number of HARQ responses for each basic bandwidth can be determined through step S204. Since the HARQ response includes a NACK, this step can target each basic bandwidth:
  • the CWS corresponding to the basic bandwidth is set to the minimum value of the current priority level.
  • the above reference value may specifically be 50%, 80%, or the like.
  • adjusting the CWS corresponding to the basic bandwidth to the next higher allowable value of the current priority level and maintaining the increased value includes:
  • the ratio of the NACK in the basic bandwidth is equal to or greater than the reference value, and the CWS is less than the maximum CWS, adjust the CWS corresponding to the basic bandwidth to a higher allowable value under the current priority level and keep the increased value; or
  • the CWS corresponding to the basic bandwidth is maintained as the maximum CWS.
  • step S206 shows a specific implementation manner of the foregoing step S206.
  • step S206 may also be implemented in other manners, and some embodiments of the present disclosure are not limited thereto.
  • a network device when a network device receives multiple HARQ responses, it can determine the number of HARQ responses for each basic bandwidth, and based on a negative response NACK within each basic bandwidth.
  • the ratio adjustment CWS solves the problem of adjusting the CWS in a broadband operation scenario and is conducive to improving the utilization efficiency of unlicensed frequency bands.
  • an embodiment of the present disclosure provides a CWS adjustment method 400 in unlicensed spectrum transmission for adjusting CWS in a broadband operation scenario.
  • the method may be performed by a network device and includes the following steps:
  • S402 Receive multiple HARQ responses, where the multiple HARQ responses include a first HARQ response and a second HARQ response.
  • the downlink channel corresponding to the first HARQ response occupies one basic bandwidth in the reference time unit; the downlink channel corresponding to the second HARQ response occupies multiple basic bandwidths in the reference time unit.
  • the multiple HARQ responses are feedbacks from the terminal device on the downlink channel sent by the network device within the reference time unit.
  • the above reference time unit may be a start time slot that the network device executes most recently and includes at least one downlink transmission time slot.
  • the HARQ response includes ACK, NACK, or DTX.
  • the network device may regard the HARQ response of the terminal device as a DTX state.
  • the network device may use DTX as a NACK for statistics.
  • the network device only counts DTX as one NACK, so as to avoid the problem of repeated statistics caused by the terminal device's subsequent successful feedback of the HARQ response for the downlink channel.
  • the network device may not perform statistics on DTX as a NACK. Whether DXT is counted as NACK may depend on the specific implementation scenario and specific implementation requirements of this embodiment, and is not limited here.
  • the number of HARQ responses of a basic bandwidth the number of the first HARQ responses corresponding to the basic bandwidth, and the sum of the number of the second HARQ responses.
  • the first HARQ response received is allocated to the basic bandwidth; in special cases, there may be no terminal device that schedules a basic bandwidth, That is, the network device schedules multiple basic bandwidths for the terminal device within a reference time unit.
  • the received second HARQ response is allocated to each of the multiple basic bandwidths.
  • the network device schedules two basic bandwidths for terminal A within a reference time unit, each of which is 20 MHz, and is referred to as the first basic bandwidth (one in the high-frequency domain) and the second basic bandwidth. (One in the low frequency domain).
  • terminal A feeds back an eight-bit HARQ response of 00100000 (that is, the second HARQ response described above), which can indicate that the network device sends data through eight CBGs, that is, the first CBG to the eighth CBG, and the terminal device fails to decode the third CBG.
  • the above 1 indicates that decoding has failed, and 0 indicates that decoding has succeeded.
  • step S404 for each terminal device that schedules multiple basic bandwidths, the second HARQ response received is allocated to the multiple basic devices.
  • the bandwidth the sum of the number of second HARQ responses allocated to each basic bandwidth and the number of first HARQ responses corresponding to the basic bandwidth are taken as the number of HARQ responses in each basic bandwidth.
  • the number of HARQ responses for each basic bandwidth can be determined through step S404. Since the HARQ response includes a NACK, this step can target each basic bandwidth:
  • the CWS corresponding to the basic bandwidth is set to the minimum value of the current priority level.
  • the above reference value may specifically be 50%, 80%, or the like.
  • adjusting the CWS corresponding to the basic bandwidth to the next higher allowable value of the current priority level and maintaining the increased value includes:
  • the ratio of the NACK in the basic bandwidth is equal to or greater than the reference value, and the CWS is less than the maximum CWS, adjust the CWS corresponding to the basic bandwidth to a higher allowable value under the current priority level and maintain the increased value; or
  • the CWS corresponding to the basic bandwidth is maintained as the maximum CWS.
  • step S406 may also be implemented in other manners, and some embodiments of the present disclosure are not limited thereto.
  • a network device when a network device receives multiple HARQ responses, it can determine the number of HARQ responses for each basic bandwidth, and based on a negative response NACK within each basic bandwidth.
  • the ratio adjustment CWS solves the problem of adjusting the CWS in a broadband operation scenario and is conducive to improving the utilization efficiency of unlicensed frequency bands.
  • an embodiment of the present disclosure provides a CWS adjustment method 500 in unlicensed spectrum transmission for adjusting CWS in a broadband operation scenario.
  • the method may be performed by a network device and includes the following steps:
  • S502 Receive multiple HARQ responses, where the multiple HARQ responses include a first HARQ response and a second HARQ response.
  • the downlink channel corresponding to the first HARQ response occupies one basic bandwidth in the reference time unit; the downlink channel corresponding to the second HARQ response occupies multiple basic bandwidths in the reference time unit.
  • the multiple HARQ responses are feedbacks from the terminal device on the downlink channel sent by the network device within the reference time unit.
  • the above reference time unit may be a start time slot that the network device executes most recently and includes at least one downlink transmission time slot.
  • the HARQ response includes ACK, NACK, or DTX.
  • the network device may regard the HARQ response of the terminal device as a DTX state.
  • the network device may use DTX as a NACK for statistics.
  • the network device only counts DTX as one NACK, so as to avoid the problem of repeated statistics caused by the terminal device's subsequent successful feedback of the HARQ response for the downlink channel.
  • the network device may not perform statistics on DTX as a NACK. Whether DXT is counted as NACK may depend on the specific implementation scenario and specific implementation requirements of this embodiment, and is not limited here.
  • S504 For a terminal device that schedules multiple basic bandwidths, allocate a second HARQ response to one of the basic bandwidths.
  • the number of HARQ responses of a basic bandwidth, the number of first HARQ responses corresponding to the basic bandwidth, and the number of second HARQ responses allocated to the basic bandwidth are related.
  • This embodiment may also allocate the second HARQ response to one of the plurality of basic bandwidths based on the terminal device that feeds back the second HARQ response.
  • the first HARQ response received is allocated to the basic bandwidth; in special cases, there may be no terminal device that schedules a basic bandwidth, That is, the network device schedules multiple basic bandwidths for the terminal device within a reference time unit.
  • the received second HARQ response is allocated to one of the multiple basic bandwidths.
  • terminal A, terminal B, and terminal C all schedule multiple same basic bandwidths, and a second HARQ response of eight bits fed back by terminal A may be allocated to the first basic bandwidth shown in FIG. 3; terminal B The second HARQ response fed back is allocated to the first basic bandwidth shown in FIG. 3; the second HARQ response fed back to terminal C is allocated to the first basic bandwidth shown in FIG. 3, and so on.
  • step S504 the sum of the number of second HARQ responses allocated to one basic bandwidth and the number of first HARQ responses corresponding to the basic bandwidth may be used as the number of HARQ responses in one basic bandwidth.
  • the basic bandwidth allocated to its feedback HARQ response (that is, the second HARQ response) may be the highest frequency, the lowest frequency, or the highest frequency among the multiple basic bandwidths. Other than the highest frequency and the lowest frequency.
  • S506 Adjust the CWS corresponding to a basic bandwidth based on the ratio of NACK in a basic bandwidth.
  • the number of HARQ responses for each basic bandwidth can be determined through step S504. Since the HARQ response includes a NACK, this step can target each basic bandwidth:
  • the CWS corresponding to the basic bandwidth is set to the minimum value of the current priority level.
  • the above reference value may specifically be 50%, 80%, or the like.
  • adjusting the CWS corresponding to the basic bandwidth to the next higher allowable value of the current priority level and maintaining the increased value includes:
  • the ratio of the NACK in the basic bandwidth is equal to or greater than the reference value, and the CWS is less than the maximum CWS, adjust the CWS corresponding to the basic bandwidth to a higher allowable value under the current priority level and maintain the increased value; or
  • the CWS corresponding to the basic bandwidth is maintained as the maximum CWS.
  • step S506 may also be implemented in other manners, and some embodiments of the present disclosure are not limited thereto.
  • a network device when a network device receives multiple HARQ responses, it can determine the number of HARQ responses for each basic bandwidth, and based on a negative response NACK within each basic bandwidth.
  • the ratio adjustment CWS solves the problem of adjusting the CWS in a broadband operation scenario and is conducive to improving the utilization efficiency of unlicensed frequency bands.
  • an embodiment of the present disclosure provides a CWS adjustment method 600 in unlicensed spectrum transmission for adjusting CWS in a broadband operation scenario.
  • the method may be performed by a network device and includes the following steps:
  • S602 Receive multiple HARQ responses, and the downlink channels corresponding to the multiple HARQ responses occupy a basic bandwidth within a reference time unit.
  • the multiple HARQ responses are feedbacks from the terminal device on the downlink channel sent by the network device within the reference time unit.
  • the above reference time unit may be a start time slot that the network device executes most recently and includes at least one downlink transmission time slot.
  • the HARQ response includes ACK, NACK, or DTX.
  • the network device does not schedule any terminal device to span multiple basic bandwidths.
  • some embodiments of the present disclosure do not set how many basic bandwidths are scheduled by the network device. limited.
  • the network device may regard the HARQ response of the terminal device as a DTX state.
  • the network device may use DTX as a NACK for statistics.
  • the network device only counts DTX as one NACK, so as to avoid the problem of repeated statistics caused by the terminal device's subsequent successful feedback of the HARQ response for the downlink channel.
  • the network device may not perform statistics on DTX as a NACK. Whether DXT is counted as NACK may depend on the specific implementation scenario and specific implementation requirements of this embodiment, and is not limited here.
  • This step can be directed to the above-mentioned basic bandwidth. If the ratio of NACK in the basic bandwidth is equal to or greater than the reference value, adjust the CWS corresponding to the basic bandwidth to a higher allowable value under the current priority level and maintain the increased value, or
  • the CWS corresponding to the basic bandwidth is set to the minimum value of the current priority level.
  • the above reference value may specifically be 50%, 80%, or the like.
  • adjusting the CWS corresponding to the basic bandwidth to the next higher allowable value of the current priority level and maintaining the increased value includes:
  • the ratio of the NACK in the basic bandwidth is equal to or greater than the reference value, and the CWS is less than the maximum CWS, adjust the CWS corresponding to the basic bandwidth to a higher allowable value under the current priority level and maintain the increased value; or
  • the CWS corresponding to the basic bandwidth is maintained as the maximum CWS.
  • step S604 may also be implemented in other manners, and some embodiments of the present disclosure are not limited thereto.
  • a network device when a network device receives multiple HARQ responses, it can determine the number of HARQ responses for this basic bandwidth, and based on the ratio of negative response NACKs within the basic bandwidth Adjusting the CWS solves the problem of adjusting the CWS in a broadband operation scenario and is beneficial to improving the utilization efficiency of the unlicensed frequency band.
  • the CWS adjustment method in unlicensed spectrum transmission has been described in detail above with reference to FIGS. 1 to 6.
  • the network device according to some embodiments of the present disclosure will be described in detail below with reference to FIG. 7.
  • FIG. 7 is a schematic structural diagram of a network device according to some embodiments of the present disclosure. As shown in FIG. 7, the network device 700 includes:
  • the receiving module 702 may be configured to receive multiple HARQ responses, and the downlink channels corresponding to the multiple HARQ responses occupy one and / or multiple basic bandwidths within a reference time unit;
  • the number determining module 704 may be configured to determine the number of HARQ responses of a basic bandwidth.
  • the CWS adjustment module 706 may be configured to adjust a CWS corresponding to the one basic bandwidth based on a ratio of NACKs in the one basic bandwidth.
  • the foregoing network device When the foregoing network device provided by some embodiments of the present disclosure receives multiple HARQ responses, it can determine the number of HARQ responses for each basic bandwidth, and adjust the CWS based on the ratio of NACK in each basic bandwidth, solving the broadband operation scenario
  • the issue of adjusting CWS is conducive to improving the utilization efficiency of unlicensed frequency bands.
  • the multiple HARQ responses include a first HARQ response and a second HARQ response, where:
  • the downlink channel corresponding to the first HARQ response occupies one basic bandwidth in the reference time unit; the downlink channel corresponding to the second HARQ response occupies multiple basic bandwidths in the reference time unit.
  • the number of HARQ responses of a basic bandwidth, the number of the first HARQ responses corresponding to the basic bandwidth, and the number of the second HARQ responses plus a preset weight are related.
  • the preset weight is an inverse of the number of the plurality of basic bandwidths.
  • the number of HARQ responses of a basic bandwidth, and the number of the first HARQ responses corresponding to the basic bandwidth are related to the sum of the number of the second HARQ responses.
  • the number of HARQ responses of a basic bandwidth, the number of the first HARQ responses corresponding to the basic bandwidth, and the number of the second HARQ responses allocated to the basic bandwidth are related.
  • the quantity determining module 704 may be further configured to allocate the second HARQ response to one of the plurality of basic bandwidths based on the terminal device that feeds back the second HARQ response. in.
  • the allocated basic bandwidth is the highest frequency, the lowest frequency, or the highest frequency and the lowest frequency among the plurality of basic bandwidths.
  • the downlink channel occupies a basic bandwidth in a reference time unit, and in the reference time unit, the network device does not schedule any one terminal device to span multiple basic bandwidths.
  • the CWS adjustment module 706 may be configured to:
  • the CWS corresponding to the basic bandwidth is set to the minimum value of the current priority level.
  • the CWS adjustment module 706 may be configured to:
  • the ratio of NACK in the basic bandwidth is equal to or greater than the reference value, and the CWS corresponding to the basic bandwidth is less than the maximum CWS, adjust the CWS corresponding to the basic bandwidth to the next higher allowable value and maintain the increased value; or
  • the CWS corresponding to the basic bandwidth is maintained as the maximum CWS.
  • the network device 700 may refer to each process of the method 100 to the method 600 corresponding to some embodiments of the present disclosure, and each unit / module in the network device 700 and the other operations and / or functions described above In order to implement the corresponding processes in the method 100 to the method 600, respectively, for the sake of brevity, the details will not be repeated here.
  • FIG. 8 is a structural diagram of a network device applied by some embodiments of the present disclosure, which can implement the details of method embodiment 100 to method embodiment 600 and achieve the same effect.
  • the network device 800 includes: a processor 801, a transceiver 802, a memory 803, and a bus interface, where:
  • the network device 800 further includes: a computer program stored on the memory 803 and executable on the processor 801, and the computer program is executed by the processor 801 and the method embodiment 100 to the method embodiment 600 steps.
  • the bus architecture may include any number of interconnected buses and bridges, and one or more processors specifically represented by the processor 801 and various circuits of the memory represented by the memory 803 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art, so they are not described further herein.
  • the bus interface provides an interface.
  • the transceiver 802 may be multiple elements, including a transmitter and a receiver, providing a unit for communicating with various other devices over a transmission medium.
  • the processor 801 is responsible for managing the bus architecture and general processing, and the memory 803 may store data used by the processor 801 when performing operations.
  • Some embodiments of the present disclosure further provide a computer-readable storage medium.
  • the computer-readable storage medium stores a computer program, and the computer program implements each process of the foregoing method embodiment 100 to method embodiment 600 when executed by a processor. And can achieve the same technical effect, in order to avoid repetition, will not repeat them here.
  • the computer-readable storage medium is, for example, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.

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Abstract

本公开的一些实施例提供了一种非授权频谱传输中CWS调节方法和网络设备。所述方法包括：接收多个HARQ应答，上述多个HARQ应答对应的下行信道在参考时间单元内占用一个和/或多个基本带宽；确定一个基本带宽的HARQ应答数量；基于所述一个基本带宽内NACK的比率，调节所述一个基本带宽对应的CWS。

Description

竞争窗口大小调节方法和网络设备
相关申请的交叉引用
本申请主张在2018年9月25日在中国提交的中国专利申请号No.201811115526.9的优先权，其全部内容通过引用包含于此。
技术领域
本申请涉及通信领域，尤其涉及一种竞争窗口大小(Contention Window Size，CWS)调节方法和网络设备。
背景技术
终端设备在接收到物理下行共享信道(Physical Downlink Shared Channel，PDSCH)后通常需要反馈混合自动重传请求(Hybrid Automatic Repeat reQuest，HARQ)应答，HARQ应答包括有肯定应答(ACKnowledgement，ACK)和否定应答(Negative-ACKnowledgment，NACK)等。这样，网络设备根据接收到的HARQ应答即可获知终端设备的接收情况；同时，网络设备还可以根据HARQ应答中NACK所占的比率调节CWS。
新无线或称新空口(New Radio，NR)支持大于20M的宽带操作，具体例如，网络设备在当前可以为终端设备调度多个基本带宽，但是下一时刻，网络设备仍然会基于每个基本带宽为单位进行对话前监听(Listen Before Talk，LBT)，因此，网络设备在调度多个基本带宽时需要调节每个基本带宽对应的CWS。但是，相关技术中并没有提供宽带操作场景下调节CWS的相关方案。因此，如何在宽带操作场景下调节CWS是相关技术亟需解决的技术问题。
发明内容
本公开的一些实施例的目的是提供一种非授权频谱传输中CWS调节方法，用以在宽带操作场景下调节CWS。
第一方面，提供了一种非授权频谱传输中CWS调节方法，所述方法由网络设备执行，所述方法包括：接收多个HARQ应答，所述多个HARQ应答对 应的下行信道在参考时间单元内占用一个和/或多个基本带宽；确定一个基本带宽的HARQ应答数量；基于所述一个基本带宽内NACK的比率，调节所述一个基本带宽对应的CWS。
第二方面，提供了一种网络设备，包括：接收模块，用于接收多个HARQ应答，所述多个HARQ应答对应的下行信道在参考时间单元内占用一个和/或多个基本带宽；数量确定模块，用于确定一个基本带宽的HARQ应答数量；CWS调节模块，用于基于所述一个基本带宽内NACK的比率，调节所述一个基本带宽对应的CWS。
第三方面，提供了一种网络设备，该网络设备包括处理器、存储器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如第一方面所述的非授权频谱传输中CWS调节方法的步骤。
第四方面，提供了一种计算机可读存储介质，所述计算机可读存储介质上存储计算机程序，所述计算机程序被处理器执行时实现如第一方面所述的非授权频谱传输中CWS调节方法的步骤。
在本公开的一些实施例中，网络设备在接收到多个HARQ应答时，可以确定基本带宽的HARQ应答数量，并基于基本带宽内NACK的比率调节CWS，解决了宽带操作场景下调节CWS的问题，有利于提高非授权频带的利用效率。
附图说明
此处所说明的附图用来提供对本申请的进一步理解，构成本申请的一部分，本申请的示意性实施例及其说明用于解释本申请，并不构成对本申请的不当限定。在附图中：
图1是根据本公开的一个实施例的非授权频谱传输中CWS调节方法的示意性流程图；
图2是根据本公开的另一个实施例的非授权频谱传输中CWS调节方法的示意性流程图；
图3是根据本公开的一个实施例的PDSCH占用多个基本带宽示意图；
图4是根据本公开的再一个实施例的非授权频谱传输中CWS调节方法的 示意性流程图；
图5是根据本公开的又一个实施例的非授权频谱传输中CWS调节方法的示意性流程图；
图6是根据本公开的下一个实施例的非授权频谱传输中CWS调节方法的示意性流程图；
图7是根据本公开的一个实施例的网络设备的结构示意图；
图8是根据本公开的另一个实施例的网络设备的结构示意图。
具体实施方式
为使本申请的目的、技术方案和优点更加清楚，下面将结合本申请具体实施例及相应的附图对本申请技术方案进行清楚、完整地描述。显然，所描述的实施例仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
应理解，本公开的一些实施例的技术方案可以应用于各种通信系统，例如：全球移动通讯(Global System of Mobile communication，GSM)系统、码分多址(Code Division Multiple Access，CDMA)系统、宽带码分多址(Wideband Code Division Multiple Access，WCDMA)系统、通用分组无线业务(General Packet Radio Service，GPRS)、长期演进(Long Term Evolution，LTE)系统、LTE频分双工(Frequency Division Duplex，FDD)系统、LTE时分双工(Time Division Duplex，TDD)、通用移动通信系统(Universal Mobile Telecommunication System，UMTS)或全球互联微波接入(Worldwide Interoperability for Microwave Access，WiMAX)通信系统、5G系统，或者说新无线(New Radio,NR)系统，或者为后续演进通信系统。
在本公开的一些实施例中，终端设备可以包括但不限于移动台(Mobile Station，MS)、移动终端(Mobile Terminal)、移动电话(Mobile Telephone)、用户设备(User Equipment，UE)、手机(handset)及便携设备(portable equipment)、车辆(vehicle)等，该终端设备可以经无线接入网(Radio Access Network，RAN)与一个或多个核心网进行通信，例如，终端设备可以是移动 电话(或称为“蜂窝”电话)、具有无线通信功能的计算机等，终端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。
本公开的一些实施例中，网络设备是一种部署在无线接入网中用以为终端设备提供无线通信功能的装置。所述网络设备可以为基站，所述基站可以包括各种形式的宏基站，微基站，中继站，接入点等。在采用不同的无线接入技术的系统中，具有基站功能的设备的名称可能会有所不同。例如在LTE网络中，称为演进的节点B(Evolved NodeB，eNB或eNodeB)，在第三代(3rd Generation，3G)网络中，称为节点B(Node B)，或者后续演进通信系统中的网络设备等等，然用词并不构成限制。
在非授权频谱传输中，网络设备同时调度多个基本带宽能够提高传输效率。相关技术中，由于终端设备反馈的HARQ应答应该被分配至哪个基本带宽中还是未知，也就无法基于基本带宽中NACK的比率调节调节CWS。
为解决上述技术问题，如图1所示，本公开的一个实施例提供一种非授权(un-license)频谱传输中CWS调节方法100，用以在宽带操作场景下调节CWS，该方法实施例100可以由网络设备执行，包括如下步骤：
S102：接收多个HARQ应答，所述多个HARQ应答对应的下行信道在参考时间单元内占用一个和/或多个基本带宽。
上述多个HARQ应答，是终端设备基于接收到的下行信道发送的，这些下行信道例如包括：物理下行控制信道(Physical Downlink Control CHannel，PDCCH)，物理下行共享信道(Physical Downlink Shared CHannel，PDSCH)等。
在步骤S102之前，网络设备会针对不同的终端设备，在参考时间单元内发送下行信道，这样，终端设备在接收下行信道之后即可反馈HARQ应答，以告知网络设备是否接收正确，辅助网络设备进行判断是否需要后续重传等。
上述多个HARQ应答，是终端设备针对网络设备在参考时间单元内发送的下行信道进行的反馈。上述参考时间单元可以是网络设备执行最近的、包括至少一个下行传输时隙的起始时隙。上述HARQ应答包括ACK、NACK或不连续传输(Discontinuous Transmission，DTX)等。
本公开各个实施例中提到的基本带宽，其频率范围可以是20MHZ，具体 可以是载波聚合中的分量载波，载波聚合可以使用多个分量载波来执行上行或下行传输。例如，将三个20MHz的分量载波聚集，以支持60MHz的带宽传输，上述多个分量载波可以在频域中彼此相邻或者彼此不相邻。
步骤S102中接收到的多个HARQ应答通常自于多个终端设备，针对上述多个终端设备：
可选地，网络设备可以在参考时间单元内为一些终端设备调度多个基本带宽；同时为另一些终端设备仅仅调度一个基本带宽。
可选地，网络设备还可以在参考时间单元内为上述多个终端设备均调度多个基本带宽。
可选地，网络设备还可以在参考时间单元内为上述多个终端设备均调度一个基本带宽，也即网络设备在参考时间单元内不调度任何一个终端设备跨越多个基本带宽，当然，在参考时间单元之外，本公开的一些实施例对网络设备调度多少个基本带宽不作限定。
S104：确定一个基本带宽的HARQ应答数量。
该步骤中，网络设备可以基于接收到的多个HARQ应答，为每个基本带宽分配HARQ应答(具体是分配HARQ应答的数量)。
可选地，上述多个HARQ应答包括第一HARQ应答和第二HARQ应答，其中，第一HARQ应答对应的下行信道在参考时间单元内占用一个基本带宽；第二HARQ应答对应的下行信道在所述参考时间单元内占用多个基本带宽。
由于第一HARQ应答对应的下行信道在参考时间单元内占用一个基本带宽，因此，该第一HARQ应答的数量通常是分配到对应的一个基本带宽内，无需分配到其它基本带宽中。以下将举例介绍第二HARQ的数量在上述多个基本带宽中该如何分配。
例如，网络设备接收到的多个HARQ应答中包括有N个第二HARQ应答，这N个第二HARQ应答对应的下行信道在参考时间单元内都占用M个相同的基本带宽，M和N均是大于2的整数。
可选地，网络设备可以为一个基本带宽分配N/M个第二HARQ应答，也即网络设备为一个基本带宽平均分配接收到的第二HARQ应答。
可选地，网络设备可以为一个基本带宽均分配N个第二HARQ应答，也 即为一个基本带宽均分配接收到的全部第二HARQ应答。
可选地，网络设备可以将一些终端设备反馈的第二HARQ应答分配到一个基本带宽中，将另一些终端设备反馈的第二HARQ应答分配到另一个基本带宽中等等。
考虑到终端设备可能并未接收到网络设备的调度，或者，由于干扰网络设备没有收到该终端设备的HARQ应答，网络设备可以把该终端设备的HARQ应答视为DTX状态。对于网络设备没有收到终端设备的HARQ应答的情况，网络设备可以将DTX作为NACK进行统计。
需要说明的是，对于一个下行信道，网络设备只统计一次DTX作为一个NACK，从而避免终端设备后续针对该下行信道成功反馈HARQ应答后引起的重复统计问题。
当然，在其他实施例中，网络设备也可以不将DTX作为NACK进行统计。是否将DXT作为NACK进行统计可以取决于本实施例的具体实施场景和具体实施需求，这里不做限定。
需要说明的是，该步骤以及后续步骤中提到“一个基本带宽”，其中，如果接收到的多个HARQ应答对应的下行信道在参考时间单元内占用一个基本带宽，该处的“一个基本带宽”特指上述一个基本带宽；如果接收到的多个HARQ应答对应的下行信道在参考时间单元内占用多个基本带宽，该处的“一个基本带宽”可以指的是上述多个基本带宽中的任一个基本带宽。
S106：基于所述一个基本带宽内否定应答NACK的比率，调节所述一个基本带宽对应的CWS。
需要说明的是，该实施例的步骤S104和S106中提到确定一个基本带宽的HARQ应答数量，并基于该基本带宽内NACK的比率调节(adjust)CWS，实际上，对于上述多个基本带宽同样适用，也即可以利用该实施例提供的方法，确定每一个基本带宽的HARQ应答数量，并基于每一个基本带宽内NACK的比率调节CWS。
本公开各个实施例中提到的调节CWS，其中的“调节”也可以用其他名词替代，例如，“调整”CWS、“增加或减少”CWS或者是“控制”CWS等等。
通过步骤S104可以确定出每个基本带宽的HARQ应答数量，由于HARQ应答中包括有NACK，该步骤即可针对每个基本带宽：
如果该基本带宽内NACK的比率等于或大于参考值，将该基本带宽对应的CWS调节到当前优先等级(Priority class，P)下一个更高的允许值并且保持增加后的值，以及
如果该基本带宽内NACK的比率小于参考值，将该基本带宽对应的CWS设置为当前优先等级的最小值。
上述参考值，具体可以是50％，80％等等。上述优先等级P∈{1，2，3，4}。
可选地，上述如果基本带宽内NACK的比率等于或大于参考值，将该基本带宽对应的CWS调节到当前优先等级的下一个更高的允许值并且保持增加后的值可以包括：
如果基本带宽内NACK的比率等于或大于参考值，且CWS小于最大CWS，将该基本带宽对应的CWS调节到当前优先等级下一个更高的允许值并且保持增加后的值；或者
如果该基本带宽内NACK的比率等于或大于参考值，且CWS等于最大CWS，将该基本带宽对应的CWS保持为最大CWS。
本公开的一些实施例在此示出了前述步骤S106的一种具体实现方式。当然，应理解，步骤S106也可以采用其它的方式实现，本公开的一些实施例对此不作限制。
本公开的一些实施例提供的上述非授权频谱传输中CWS调节方法，网络设备在接收到多个HARQ应答时，可以确定每个基本带宽的HARQ应答数量，并基于每个基本带宽内NACK的比率调节CWS，解决了宽带操作场景下调节CWS的问题，有利于提高非授权频带的利用效率。
如图2所示，本公开的另一个实施例提供一种非授权频谱传输中CWS调节方法200，用以在宽带操作场景下调节CWS，该方法可以由网络设备执行，包括如下步骤：
S202：接收多个HARQ应答，所述多个HARQ应答包括第一HARQ应答和第二HARQ应答。
该实施例中，上述第一HARQ应答对应的下行信道在参考时间单元内占 用一个基本带宽；上述第二HARQ应答对应的下行信道在参考时间单元内占用多个基本带宽。
上述多个HARQ应答，是终端设备针对网络设备在参考时间单元内发送的下行信道进行的反馈。上述参考时间单元可以是网络设备执行最近的、包括至少一个下行传输时隙的起始时隙。上述HARQ应答包括ACK、NACK或DTX等。
考虑到终端设备可能并未接收到网络设备的调度，或者，由于干扰网络设备没有收到该终端设备的HARQ应答，网络设备可以把该终端设备的HARQ应答视为DTX状态。对于网络设备没有收到终端设备的HARQ应答的情况，网络设备可以将DTX作为NACK进行统计。
需要说明的是，对于一个下行信道，网络设备只统计一次DTX作为一个NACK，从而避免终端设备后续针对该下行信道成功反馈HARQ应答后引起的重复统计问题。
当然，在其他实施例中，网络设备也可以不将DTX作为NACK进行统计。是否将DXT作为NACK进行统计可以取决于本实施例的具体实施场景和具体实施需求，这里不做限定。
S204：将第二HARQ应答按照预设比例分配至上述多个基本带宽。
该实施例中，一个基本带宽的HARQ应答数量，与该基本带宽对应的第一HARQ应答的数量，以及所述第二HARQ应答的数量加预设权重有关。可选地，上述预设权重等于所述多个基本带宽的数量的倒数。
具体地，该步骤即可针对每一个调度了一个基本带宽的终端设备，将接收到的第一HARQ应答分配至该基本带宽中；特殊情况下，可以不存在调度了一个基本带宽的终端设备，也即，网络设备在参考时间单元内为终端设备均调度多个基本带宽。
针对每一个调度了多个基本带宽的终端设备，将接收到的第二HARQ应答按照预设比例(等同于上述加预设权重)分配至上述多个基本带宽，该处的预设比例可以是等比例，也可以是其它任意比例。
例如，如图3所示，网络设备在参考时间单元内为终端A调度2个基本带宽，也即网络设备在参考时间单元内向终端A发送的PDSCH占用两个基 本带宽，每个基本带宽均是20MHZ，后续称第一基本带宽(高频域的一个)和第二基本带宽(低频域的一个)。
假设终端A反馈八个比特位00100000的HARQ应答(即上述第二HARQ应答)，可以表示网络设备通过8个CBG发送数据，即第一CBG到第八CBG，终端设备未成功解码第三CBG，上述1表示解码失败，0表示解码成功。
该步骤即可基于终端A反馈八个比特位的HARQ应答，为第一基本带宽分配4个比特位，这4个比特位中有0.5个NACK；为第二基本带宽分配4个比特位，这4个比特位中有0.5个NACK。
上述仅仅是以一个调度了多个基本带宽的终端设备为例进行说明，步骤S204可以针对每一个调度了多个基本带宽的终端设备，将接收到的第二HARQ应答按照预设比例分配至上述多个基本带宽，最后将每个基本带宽分配到的第二HARQ应答的数量的和，以及该基本带宽对应的第一HARQ应答的数量，作为每个基本带宽中的HARQ应答数量。
可选地，作为一个实施例，上述所述预设比例是所述多个基本带宽的数量的倒数，也即对每个基本带宽平均分配接收到的第二HARQ应答。
S206：基于所述一个基本带宽内NACK的比率，调节所述一个基本带宽对应的CWS。
通过步骤S204能够确定出每个基本带宽的HARQ应答数量，由于HARQ应答中包括有NACK，该步骤即可针对每个基本带宽：
如果该基本带宽内NACK的比率等于或大于参考值，将该基本带宽对应的CWS调节到当前优先等级下一个更高的允许值并且保持增加后的值，以及
如果该基本带宽内NACK的比率小于参考值，将该基本带宽对应的CWS设置为当前优先等级的最小值。
上述参考值，具体可以是50％，80％等等。
可选地，上述如果基本带宽内NACK的比率等于或大于参考值，将该基本带宽对应的CWS调节到当前优先等级的下一个更高的允许值并且保持增加后的值包括：
如果基本带宽内NACK的比率等于或大于参考值，且CWS小于最大CWS，将该基本带宽对应的CWS调节到当前优先等级下一个更高的允许值 并且保持增加后的值；或者
如果该基本带宽内NACK的比率等于或大于参考值，且CWS等于最大CWS，将该基本带宽对应的CWS保持为最大CWS。
本公开的一些实施例在此示出了前述步骤S206的一种具体实现方式。当然，应理解，步骤S206也可以采用其它的方式实现，本公开的一些实施例对此不作限制。
本公开的一些实施例提供的上述非授权频谱传输中CWS调节方法，网络设备在接收到多个HARQ应答时，可以确定每个基本带宽的HARQ应答数量，并基于每个基本带宽内否定应答NACK的比率调节CWS，解决了宽带操作场景下调节CWS的问题，有利于提高非授权频带的利用效率。
如图4所示，本公开的一个实施例提供一种非授权频谱传输中CWS调节方法400，用以在宽带操作场景下调节CWS，该方法可以由网络设备执行，包括如下步骤：
S402：接收多个HARQ应答，所述多个HARQ应答包括第一HARQ应答和第二HARQ应答。
该实施例中，上述第一HARQ应答对应的下行信道在所述参考时间单元内占用一个基本带宽；上述第二HARQ应答对应的下行信道在所述参考时间单元内占用多个基本带宽。
上述多个HARQ应答，是终端设备针对网络设备在参考时间单元内发送的下行信道进行的反馈。上述参考时间单元可以是网络设备执行最近的、包括至少一个下行传输时隙的起始时隙。上述HARQ应答包括ACK、NACK或DTX等。
考虑到终端设备可能并未接收到网络设备的调度，或者，由于干扰网络设备没有收到该终端设备的HARQ应答，网络设备可以把该终端设备的HARQ应答视为DTX状态。对于网络设备没有收到终端设备的HARQ应答的情况，网络设备可以将DTX作为NACK进行统计。
需要说明的是，对于一个下行信道，网络设备只统计一次DTX作为一个NACK，从而避免终端设备后续针对该下行信道成功反馈HARQ应答后引起的重复统计问题。
当然，在其他实施例中，网络设备也可以不将DTX作为NACK进行统计。是否将DXT作为NACK进行统计可以取决于本实施例的具体实施场景和具体实施需求，这里不做限定。
S404：将第二HARQ应答都分配至所述多个基本带宽中。
该实施例中，一个基本带宽的HARQ应答数量，与该基本带宽对应的所述第一HARQ应答的数量，与所述第二HARQ应答的数量求和有关。
具体地，该步骤即可针对每一个调度了一个基本带宽的终端设备，将接收到的第一HARQ应答分配至该基本带宽中；特殊情况下，可以不存在调度了一个基本带宽的终端设备，也即，网络设备在参考时间单元内为终端设备均调度多个基本带宽。
针对每一个调度了多个基本带宽的终端设备，将接收到的第二HARQ应答都分配至上述多个基本带宽中的每个基本带宽中。
例如，如图3所示，网络设备在参考时间单元内为终端A调度2个基本带宽，每个基本带宽均是20MHZ，后续称第一基本带宽(高频域的一个)和第二基本带宽(低频域的一个)。
假设终端A反馈八个比特位00100000的HARQ应答(即上述第二HARQ应答)，可以表示网络设备通过8个CBG发送数据，即第一CBG到第八CBG，终端设备未成功解码第三CBG，上述1表示解码失败，0表示解码成功。
该步骤即可基于终端A反馈八个比特位的HARQ应答，为第一基本带宽分配8个比特位，这8个比特位中有1个NACK；为第二基本带宽分配8个比特位，这8个比特位中有1个NACK。
上述仅仅是以一个调度了多个基本带宽的终端设备为例进行说明，步骤S404可以针对每一个调度了多个基本带宽的终端设备，将接收到的第二HARQ应答都分配至上述多个基本带宽中；最后将每个基本带宽分配到的第二HARQ应答的数量的和，以及该基本带宽对应的第一HARQ应答的数量，作为每个基本带宽中的HARQ应答数量。
S406：基于所述一个基本带宽内NACK的比率，调节所述一个基本带宽对应的CWS。
通过步骤S404能够确定出每个基本带宽的HARQ应答数量，由于HARQ 应答中包括有NACK，该步骤即可针对每个基本带宽：
如果该基本带宽内NACK的比率等于或大于参考值，将该基本带宽对应的CWS调节到当前优先等级下一个更高的允许值并且保持增加后的值，以及
如果该基本带宽内NACK的比率小于参考值，将该基本带宽对应的CWS设置为当前优先等级的最小值。
上述参考值，具体可以是50％，80％等等。
可选地，上述如果基本带宽内NACK的比率等于或大于参考值，将该基本带宽对应的CWS调节到当前优先等级的下一个更高的允许值并且保持增加后的值包括：
如果基本带宽内NACK的比率等于或大于参考值，且CWS小于最大CWS，将该基本带宽对应的CWS调节到当前优先等级下一个更高的允许值并且保持增加后的值；或者
如果该基本带宽内NACK的比率等于或大于参考值，且CWS等于最大CWS，将该基本带宽对应的CWS保持为最大CWS。
本公开的一些实施例在此示出了前述步骤S406的一种具体实现方式。当然，应理解，步骤S406也可以采用其它的方式实现，本公开的一些实施例对此不作限制。
本公开的一些实施例提供的上述非授权频谱传输中CWS调节方法，网络设备在接收到多个HARQ应答时，可以确定每个基本带宽的HARQ应答数量，并基于每个基本带宽内否定应答NACK的比率调节CWS，解决了宽带操作场景下调节CWS的问题，有利于提高非授权频带的利用效率。
如图5所示，本公开的一个实施例提供一种非授权频谱传输中CWS调节方法500，用以在宽带操作场景下调节CWS，该方法可以由网络设备执行，包括如下步骤：
S502：接收多个HARQ应答，所述多个HARQ应答包括第一HARQ应答和第二HARQ应答。
该实施例中，上述第一HARQ应答对应的下行信道在所述参考时间单元内占用一个基本带宽；上述第二HARQ应答对应的下行信道在所述参考时间单元内占用多个基本带宽。
上述多个HARQ应答，是终端设备针对网络设备在参考时间单元内发送的下行信道进行的反馈。上述参考时间单元可以是网络设备执行最近的、包括至少一个下行传输时隙的起始时隙。上述HARQ应答包括ACK、NACK或DTX等。
考虑到终端设备可能并未接收到网络设备的调度，或者，由于干扰网络设备没有收到该终端设备的HARQ应答，网络设备可以把该终端设备的HARQ应答视为DTX状态。对于网络设备没有收到终端设备的HARQ应答的情况，网络设备可以将DTX作为NACK进行统计。
需要说明的是，对于一个下行信道，网络设备只统计一次DTX作为一个NACK，从而避免终端设备后续针对该下行信道成功反馈HARQ应答后引起的重复统计问题。
当然，在其他实施例中，网络设备也可以不将DTX作为NACK进行统计。是否将DXT作为NACK进行统计可以取决于本实施例的具体实施场景和具体实施需求，这里不做限定。
S504：针对调度了多个基本带宽的终端设备，将第二HARQ应答分配至其中一个基本带宽中。
该实施例中，一个基本带宽的HARQ应答数量，与该基本带宽对应的第一HARQ应答的数量，以及第二HARQ应答分配到该基本带宽的数量有关。该实施例还可以基于反馈第二HARQ应答的终端设备，将第二HARQ应答分配到多个基本带宽中的一个基本带宽中。
具体地，该步骤即可针对每一个调度了一个基本带宽的终端设备，将接收到的第一HARQ应答分配至该基本带宽中；特殊情况下，可以不存在调度了一个基本带宽的终端设备，也即，网络设备在参考时间单元内为终端设备均调度多个基本带宽。
针对每一个调度了多个基本带宽的终端设备，将接收到的第二HARQ应答分配至上述多个基本带宽中的一个基本带宽中。
例如，终端A、终端B和终端C均调度了多个相同的基本带宽，可以将终端A反馈八个比特位的第二HARQ应答分配给图3所示的第一基本带宽中；将终端B反馈第二HARQ应答分配给图3所示的第一基本带宽中；将终端C 反馈第二HARQ应答分配给图3所示的第一基本带宽中等等。
步骤S504可以将一个基本带宽分配到的第二HARQ应答的数量的和，以及该基本带宽对应的第一HARQ应答的数量，作为一个基本带宽中的HARQ应答数量。
针对一个调度了多个基本带宽的终端设备而言，其反馈的HARQ应答(即第二HARQ应答)分配到的基本带宽，可以是多个基本带宽中频率最高的、频率最低的、或者是所述频率最高的和所述频率最低的之外的。
S506：基于一个基本带宽内NACK的比率，调节一个基本带宽对应的CWS。
通过步骤S504能够确定出每个基本带宽的HARQ应答数量，由于HARQ应答中包括有NACK，该步骤即可针对每个基本带宽：
如果该基本带宽内NACK的比率等于或大于参考值，将该基本带宽对应的CWS调节到当前优先等级下一个更高的允许值并且保持增加后的值，以及
如果该基本带宽内NACK的比率小于参考值，将该基本带宽对应的CWS设置为当前优先等级的最小值。
上述参考值，具体可以是50％，80％等等。
可选地，上述如果基本带宽内NACK的比率等于或大于参考值，将该基本带宽对应的CWS调节到当前优先等级的下一个更高的允许值并且保持增加后的值包括：
如果基本带宽内NACK的比率等于或大于参考值，且CWS小于最大CWS，将该基本带宽对应的CWS调节到当前优先等级下一个更高的允许值并且保持增加后的值；或者
如果该基本带宽内NACK的比率等于或大于参考值，且CWS等于最大CWS，将该基本带宽对应的CWS保持为最大CWS。
本公开的一些实施例在此示出了前述步骤S506的一种具体实现方式。当然，应理解，步骤S506也可以采用其它的方式实现，本公开的一些实施例对此不作限制。
本公开的一些实施例提供的上述非授权频谱传输中CWS调节方法，网络设备在接收到多个HARQ应答时，可以确定每个基本带宽的HARQ应答数量， 并基于每个基本带宽内否定应答NACK的比率调节CWS，解决了宽带操作场景下调节CWS的问题，有利于提高非授权频带的利用效率。
如图6所示，本公开的一个实施例提供一种非授权频谱传输中CWS调节方法600，用以在宽带操作场景下调节CWS，该方法可以由网络设备执行，包括如下步骤：
S602：接收多个HARQ应答，所述多个HARQ应答对应的下行信道在参考时间单元内占用一个基本带宽。
上述多个HARQ应答，是终端设备针对网络设备在参考时间单元内发送的下行信道进行的反馈。上述参考时间单元可以是网络设备执行最近的、包括至少一个下行传输时隙的起始时隙。上述HARQ应答包括ACK、NACK或DTX等。
该实施例中，在上述参考时间单元内，网络设备不调度任何一个终端设备跨越多个基本带宽，当然，在参考时间单元之外，本公开的一些实施例对网络设备调度多少个基本带宽不作限定。
考虑到终端设备可能并未接收到网络设备的调度，或者，由于干扰网络设备没有收到该终端设备的HARQ应答，网络设备可以把该终端设备的HARQ应答视为DTX状态。对于网络设备没有收到终端设备的HARQ应答的情况，网络设备可以将DTX作为NACK进行统计。
需要说明的是，对于一个下行信道，网络设备只统计一次DTX作为一个NACK，从而避免终端设备后续针对该下行信道成功反馈HARQ应答后引起的重复统计问题。
当然，在其他实施例中，网络设备也可以不将DTX作为NACK进行统计。是否将DXT作为NACK进行统计可以取决于本实施例的具体实施场景和具体实施需求，这里不做限定。
S604：基于所述基本带宽内NACK的比率，调节所述基本带宽对应的CWS。
该步骤即可针对上述基本带宽，如果该基本带宽内NACK的比率等于或大于参考值，将该基本带宽对应的CWS调节到当前优先等级下一个更高的允许值并且保持增加后的值，或者
如果该基本带宽内NACK的比率小于参考值，将该基本带宽对应的CWS设置为当前优先等级的最小值。
上述参考值，具体可以是50％，80％等等。
可选地，如果上述基本带宽内NACK的比率等于或大于参考值，将该基本带宽对应的CWS调节到当前优先等级的下一个更高的允许值并且保持增加后的值包括：
如果上述基本带宽内NACK的比率等于或大于参考值，且CWS小于最大CWS，将该基本带宽对应的CWS调节到当前优先等级下一个更高的允许值并且保持增加后的值；或者
如果该基本带宽内NACK的比率等于或大于参考值，且CWS等于最大CWS，将该基本带宽对应的CWS保持为最大CWS。
本公开的一些实施例在此示出了前述步骤S604的一种具体实现方式。当然，应理解，步骤S604也可以采用其它的方式实现，本公开的一些实施例对此不作限制。
本公开的一些实施例提供的上述非授权频谱传输中CWS调节方法，网络设备在接收到多个HARQ应答时，可以确定这一个基本带宽的HARQ应答数量，并基于基本带宽内否定应答NACK的比率调节CWS，解决了宽带操作场景下调节CWS的问题，有利于提高非授权频带的利用效率。
以上结合图1至图6详细描述了根据本公开的一些实施例的非授权频谱传输中CWS调节方法。下面将结合图7详细描述根据本公开的一些实施例的网络设备。
图7是根据本公开的一些实施例的网络设备的结构示意图。如图7所示，网络设备700包括：
接收模块702，可以用于接收多个HARQ应答，所述多个HARQ应答对应的下行信道在参考时间单元内占用一个和/或多个基本带宽；
数量确定模块704，可以用于确定一个基本带宽的HARQ应答数量；
CWS调节模块706，可以用于基于所述一个基本带宽内NACK的比率，调节所述一个基本带宽对应的CWS。
本公开的一些实施例提供的上述网络设备，在接收到多个HARQ应答时， 可以确定每个基本带宽的HARQ应答数量，并基于每个基本带宽内NACK的比率调节CWS，解决了宽带操作场景下调节CWS的问题，有利于提高非授权频带的利用效率。
可选地，作为一个实施例，所述多个HARQ应答包括第一HARQ应答和第二HARQ应答，其中，
所述第一HARQ应答对应的下行信道在所述参考时间单元内占用一个基本带宽；所述第二HARQ应答对应的下行信道在所述参考时间单元内占用多个基本带宽。
可选地，作为一个实施例，一个基本带宽的HARQ应答数量，与该基本带宽对应的所述第一HARQ应答的数量，以及所述第二HARQ应答的数量加预设权重有关。
可选地，作为一个实施例，所述预设权重是所述多个基本带宽的数量的倒数。
可选地，作为一个实施例，一个基本带宽的HARQ应答数量，与该基本带宽对应的所述第一HARQ应答的数量，与所述第二HARQ应答的数量求和有关。
可选地，作为一个实施例，一个基本带宽的HARQ应答数量，与该基本带宽对应的所述第一HARQ应答的数量，以及所述第二HARQ应答分配到该基本带宽的数量有关。
可选地，作为一个实施例，数量确定模块704，还可以用于基于反馈所述第二HARQ应答的终端设备，将所述第二HARQ应答分配到所述多个基本带宽中的一个基本带宽中。
可选地，作为一个实施例，所述分配到的一个基本带宽，是所述多个基本带宽中频率最高的、频率最低的、或者是所述频率最高和所述频率最低的之外的。
可选地，作为一个实施例，所述下行信道在参考时间单元内占用一个基本带宽，其中，在所述参考时间单元内，所述网络设备不调度任何一个终端设备跨越多个基本带宽。
可选地，作为一个实施例，CWS调节模块706，可以用于：
如果基本带宽内NACK的比率等于或大于参考值，将该基本带宽对应的CWS调节到当前优先等级下一个更高的允许值并且保持增加后的值，或者
如果基本带宽内NACK的比率小于参考值，将该基本带宽对应的CWS设置为当前优先等级的最小值。
可选地，作为一个实施例，CWS调节模块706，可以用于：
如果基本带宽内NACK的比率等于或大于参考值，且该基本带宽对应的CWS小于最大CWS，将该基本带宽对应的CWS调节到下一个更高的允许值并且保持增加后的值；或者
如果基本带宽内NACK的比率小于参考值，且该基本带宽对应的CWS等于最大CWS，将该基本带宽对应的CWS保持为最大CWS。
根据本公开的一些实施例的网络设备700可以参照对应本公开的一些实施例的方法100至方法600的各个流程，并且，该网络设备700中的各个单元/模块和上述其他操作和/或功能分别为了实现方法100至方法600中的相应流程，为了简洁，在此不再赘述。
请参阅图8，图8是本公开的一些实施例应用的网络设备的结构图，能够实现方法实施例100至方法实施例600的细节，并达到相同的效果。如图8所示，网络设备800包括：处理器801、收发机802、存储器803和总线接口，其中：
在本公开的一些实施例中，网络设备800还包括：存储在存储器上803并可在处理器801上运行的计算机程序，计算机程序被处理器801、执行时实现方法实施例100至方法实施例600的步骤。
在图8中，总线架构可以包括任意数量的互联的总线和桥，具体由处理器801代表的一个或多个处理器和存储器803代表的存储器的各种电路链接在一起。总线架构还可以将诸如外围设备、稳压器和功率管理电路等之类的各种其他电路链接在一起，这些都是本领域所公知的，因此，本文不再对其进行进一步描述。总线接口提供接口。收发机802可以是多个元件，即包括发送机和接收机，提供用于在传输介质上与各种其他装置通信的单元。
处理器801负责管理总线架构和通常的处理，存储器803可以存储处理器801在执行操作时所使用的数据。
本公开的一些实施例还提供一种计算机可读存储介质，计算机可读存储介质上存储有计算机程序，该计算机程序被处理器执行时实现上述方法实施例100至方法实施例600的各个过程，且能达到相同的技术效果，为避免重复，这里不再赘述。其中，所述的计算机可读存储介质，如只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等。
需要说明的是，在本文中，术语“包括”、“包含”或者其任何其他变体意在涵盖非排他性的包含，从而使得包括一系列要素的过程、方法、物品或者装置不仅包括那些要素，而且还包括没有明确列出的其他要素，或者是还包括为这种过程、方法、物品或者装置所固有的要素。在没有更多限制的情况下，由语句“包括一个……”限定的要素，并不排除在包括该要素的过程、方法、物品或者装置中还存在另外的相同要素。
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到上述实施例方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件，但很多情况下前者是更佳的实施方式。基于这样的理解，本公开的技术方案本质上或者说对相关技术做出贡献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(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端(可以是手机，计算机，服务器，空调器，或者网络设备等)执行本公开各个实施例所述的方法。
上面结合附图对本公开的实施例进行了描述，但是本公开并不局限于上述的具体实施方式，上述的具体实施方式仅仅是示意性的，而不是限制性的，本领域的普通技术人员在本公开的启示下，在不脱离本公开宗旨和权利要求所保护的范围情况下，还可做出很多形式，均属于本公开的保护之内。

Claims (14)

  1. 一种非授权频谱传输中竞争窗口大小(CWS)调节方法，所述方法由网络设备执行，所述方法包括：
    接收多个混合自动重传请求(HARQ)应答，所述多个HARQ应答对应的下行信道在参考时间单元内占用一个和/或多个基本带宽；
    确定一个基本带宽的HARQ应答数量；
    基于所述一个基本带宽内否定应答(NACK)的比率，调节所述一个基本带宽对应的CWS。
  2. 如权利要求1所述的方法，其中，
    所述多个HARQ应答包括第一HARQ应答和第二HARQ应答，其中，
    所述第一HARQ应答对应的下行信道在所述参考时间单元内占用一个基本带宽；所述第二HARQ应答对应的下行信道在所述参考时间单元内占用多个基本带宽。
  3. 如权利要求2所述的方法，其中，
    所述一个基本带宽的HARQ应答数量，与该基本带宽对应的所述第一HARQ应答的数量，以及所述第二HARQ应答的数量加预设权重有关。
  4. 如权利要求3所述的方法，其中，
    所述预设权重等于所述多个基本带宽的数量的倒数。
  5. 如权利要求2所述的方法，其中，
    所述一个基本带宽的HARQ应答数量，与该基本带宽对应的所述第一HARQ应答的数量，与所述第二HARQ应答的数量求和有关。
  6. 如权利要求2所述的方法，其中，
    所述一个基本带宽的HARQ应答数量，与该基本带宽对应的所述第一HARQ应答的数量，以及所述第二HARQ应答分配到该基本带宽的数量有关。
  7. 如权利要求6所述的方法，还包括：
    基于反馈所述第二HARQ应答的终端设备，将所述第二HARQ应答分配到所述多个基本带宽中的一个基本带宽中。
  8. 如权利要求7所述的方法，其中，
    所述分配到的一个基本带宽，是所述多个基本带宽中频率最高的、频率最低的、或者是所述频率最高和所述频率最低的之外的。
  9. 如权利要求1所述的方法，其中，所述下行信道在所述参考时间单元内占用一个基本带宽，其中，在所述参考时间单元内，所述网络设备不调度任何一个终端设备跨越多个基本带宽。
  10. 如权利要求1至9任一项所述的方法，其中，所述基于所述一个基本带宽内NACK的比率，调节所述一个基本带宽对应的CWS包括：
    如果基本带宽内NACK的比率等于或大于参考值，将该基本带宽对应的CWS调节到当前优先等级下一个更高的允许值并且保持增加后的值，或者
    如果基本带宽内NACK的比率小于参考值，将该基本带宽对应的CWS设置为当前优先等级的最小值。
  11. 如权利要求10所述的方法，其中，所述如果基本带宽内NACK的比率等于或大于参考值，将该基本带宽对应的CWS调节到当前优先等级的下一个更高的允许值并且保持增加后的值包括：
    如果基本带宽内NACK的比率等于或大于参考值，且该基本带宽对应的CWS小于最大CWS，将该基本带宽对应的CWS调节到下一个更高的允许值并且保持增加后的值；或者
    如果基本带宽内NACK的比率小于参考值，且该基本带宽对应的CWS等于最大CWS，将该基本带宽对应的CWS保持为最大CWS。
  12. 一种网络设备，包括：
    接收模块，用于接收多个混合自动重传请求(HARQ)应答，所述多个HARQ应答对应的下行信道在参考时间单元内占用一个和/或多个基本带宽；
    数量确定模块，用于确定一个基本带宽的HARQ应答数量；
    竞争窗口大小(CWS)调节模块，用于基于所述一个基本带宽内否定应答(NACK)的比率，调节所述一个基本带宽对应的CWS。
  13. 一种网络设备，包括：存储器、处理器及存储在所述存储器上并可在所述处理器上运行的计算机程序，所述计算机程序被所述处理器执行时实现如权利要求1至11中任一项所述的非授权频谱传输中CWS调节方法的步骤。
  14. 一种计算机可读存储介质，所述计算机可读存储介质上存储有计算机程序，所述计算机程序被处理器执行时实现如权利要求1至11中任一项所述的非授权频谱传输中CWS调节方法的步骤。
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