WO2016145601A1 - 一种退避窗口的调整方法和装置 - Google Patents

一种退避窗口的调整方法和装置 Download PDF

Info

Publication number
WO2016145601A1
WO2016145601A1 PCT/CN2015/074317 CN2015074317W WO2016145601A1 WO 2016145601 A1 WO2016145601 A1 WO 2016145601A1 CN 2015074317 W CN2015074317 W CN 2015074317W WO 2016145601 A1 WO2016145601 A1 WO 2016145601A1
Authority
WO
WIPO (PCT)
Prior art keywords
information
channel
base station
backoff window
response
Prior art date
Application number
PCT/CN2015/074317
Other languages
English (en)
French (fr)
Inventor
杨美英
吴作敏
马莎
李强
万蕾
Original Assignee
华为技术有限公司
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 华为技术有限公司 filed Critical 华为技术有限公司
Priority to CN201580077758.8A priority Critical patent/CN107409418B/zh
Priority to EP19188525.0A priority patent/EP3654725B1/en
Priority to CN201911284426.3A priority patent/CN110958714B/zh
Priority to EP15884985.1A priority patent/EP3264849A4/en
Priority to BR112017019827-4A priority patent/BR112017019827B1/pt
Priority to KR1020177029563A priority patent/KR101972941B1/ko
Priority to PCT/CN2015/074317 priority patent/WO2016145601A1/zh
Publication of WO2016145601A1 publication Critical patent/WO2016145601A1/zh
Priority to US15/706,314 priority patent/US10455623B2/en
Priority to US16/560,674 priority patent/US11191107B2/en

Links

Images

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0833Random access procedures, e.g. with 4-step access
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1854Scheduling and prioritising arrangements
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829Arrangements specially adapted for the receiver end
    • H04L1/1864ARQ related signaling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/12Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16Arrangements 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
    • H04L1/18Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867Arrangements specially adapted for the transmitter end
    • H04L1/1896ARQ related signaling
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/002Transmission of channel access control information
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0808Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • H04W74/0816Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA] with collision avoidance
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W74/00Wireless channel access
    • H04W74/08Non-scheduled access, e.g. ALOHA
    • H04W74/0808Non-scheduled access, e.g. ALOHA using carrier sensing, e.g. carrier sense multiple access [CSMA]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W8/00Network data management
    • H04W8/02Processing of mobility data, e.g. registration information at HLR [Home Location Register] or VLR [Visitor Location Register]; Transfer of mobility data, e.g. between HLR, VLR or external networks
    • H04W8/04Registration at HLR or HSS [Home Subscriber Server]

Definitions

  • the embodiments of the present invention relate to communication technologies, and in particular, to a method and an apparatus for adjusting a backoff window.
  • spectrum resources are mainly divided into two types, one is a licensed spectrum resource and the other is an unlicensed spectrum resource.
  • the licensed spectrum resources are delineated by the government's Radio Management Committee and have dedicated-purpose spectrum resources, such as those used by mobile operators, civil aviation, railways, and police.
  • the quality of licensed spectrum resources is generally due to policy exclusivity. Can be guaranteed, it is relatively easy to perform scheduling control.
  • Unlicensed spectrum resources are also spectrum resources delineated by relevant government departments, but do not limit radio technology, operating enterprises and service life, and do not guarantee the quality of service in this band. Communication equipment using unlicensed spectrum resources only needs to meet the requirements of transmitting power, out-of-band leakage and other indicators, and can be used free of charge.
  • Common communication systems for applying unlicensed spectrum resources for communication include civilian walkie-talkies, radio remote controls, Wireless Fidelity (Wi-Fi) communication systems, Bluetooth communication systems, and the like.
  • LTE Long Term Evolution
  • the spectrum resources used by operators are mainly licensed spectrum resources.
  • LAA-LTE Licensed-Assisted Access Using LTE
  • U-LTE Unlicensed Long Term Evolution
  • LBT Low Latency Detection
  • CCA Clear Channel Assessment
  • the LBT mechanism is further divided into an LBT mechanism based on Frame Based Equipment (FBE) and an LBT mechanism based on Load Based Equipment (LBE).
  • the channel access mode of the Wi-Fi system is a type of LBE, specifically a carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) mechanism.
  • CSMA/CA carrier Sense Multiple Access with Collision Avoidance
  • the LBE access mechanism specified by the regulations when the system detects conflicts, the competition window is a fixed value, but in the Wi-Fi LBE channel access mechanism, when the system detects conflicts, the competition window will grow exponentially, if the LAA system Only meeting the regulatory requirements will cause the LAA system and the Wi-Fi system to compete for channels. Once a resource conflict occurs, the LAA may preempt the channel with a greater probability, thus reducing the probability of the Wi-Fi system accessing the channel, and ensuring fairness. Coexist with Wi-Fi.
  • the embodiment of the invention provides a method and a device for adjusting the backoff window, so that the LAA system can flexibly adjust its own backoff window when the resource conflict occurs, and the WIFI system uses the wireless resource fairly.
  • a first aspect of the present invention provides a method for adjusting a backoff window, including:
  • the base station acquires first information for indicating to adjust a backoff window on the first channel
  • the base station adjusts the backoff window according to the first information
  • the acquiring, by the base station, the first information includes at least one of the following steps:
  • the base station acquires the first information according to an idle channel evaluation CCA result on the first channel;
  • the base station acquires the first information according to a system conflict detection result on the first channel
  • the second information is the response information
  • the method further includes:
  • At least one response information sent by the at least one UE where the at least one response information is response information of the at least one data packet transmitted by the at least one UE corresponding to the first channel, where the at least one Each response message in the response message is a positive acknowledgement ACK message or a negative acknowledgement NACK message;
  • the base station acquires the first information according to the at least one response information sent by the at least one UE;
  • the base station adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the base station increases a backoff window of the base station on the first channel
  • the base station reduces a backoff window of the base station on the first channel, or the base station keeps backoff of the base station on the first channel The window does not change.
  • the base station acquires the information according to the at least one response information sent by the at least one UE
  • the first information includes at least one of the following steps:
  • the base station obtains a first value according to a ratio of the number of ACK information in the at least one response information to the total number of the at least one response information, and if the first value is greater than a preset first threshold, The first information is equivalent ACK information;
  • the base station obtains a second value according to a ratio of the number of the NACK information in the at least one response information to the total number of the at least one response information, and if the second value is greater than a preset second threshold,
  • the first information is equivalent NACK information
  • the base station obtains a third value according to the number of ACK information in the at least one response information, and if the third value is greater than a preset third threshold, the first information is equivalent ACK information;
  • the base station is obtained according to the number of NACK information in the at least one response information. And a fourth value, if the fourth value is greater than a preset fourth threshold, the first information is equivalent NACK information.
  • the second information is the response information
  • the method further includes:
  • At least one response information sent by the at least one UE where the at least one response information is response information of the at least one data packet transmitted by the at least one UE corresponding to the first channel, where the at least one Each response message in the response message is a positive acknowledgement ACK message or a negative acknowledgement NACK message;
  • the base station Obtaining, by the base station, the first information of the first UE according to the at least one response information sent by the first UE in the at least one UE, where the first UE is any one of the at least one UE;
  • the base station adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the base station increases a backoff window used by the base station to schedule the first UE on the first channel, or the base station remains The base station is configured to schedule a backoff window of the first UE unchanged on the first channel, and the base station does not schedule the first UE in a first time;
  • the base station reduces a backoff window used by the base station to schedule the first UE on the first channel, or the base station remains The base station is configured to schedule a backoff window of the first UE unchanged on the first channel.
  • the base station according to the at least one response information sent by the first UE in the at least one UE Obtaining the first information of the first UE, including at least one of the following steps:
  • the base station obtains a fifth value according to a ratio of the number of ACK information in the at least one response information sent by the first UE to the total number of at least one response information sent by the first UE, where If the five values are greater than the preset fifth threshold, the first information of the first UE is equivalent ACK information;
  • the base station obtains a sixth value according to a ratio of the number of the NACK information in the at least one response information sent by the first UE to the total number of the at least one response information sent by the first UE, where If the six values are greater than the preset sixth threshold, the first information of the first UE is equivalent NACK information;
  • the base station obtains a seventh value according to the number of ACK information in the at least one response information sent by the first UE, and if the seventh value is greater than a preset seventh threshold, the first UE A message is equivalent ACK information;
  • the base station obtains an eighth value according to the number of NACK information in the at least one response information sent by the first UE, and if the eighth value is greater than a preset eighth threshold, the first UE A message is equivalent NACK information.
  • the second information is the response information and the precoding matrix indicating the PMI information
  • the method further includes:
  • At least one response information is response information of the at least one data packet transmitted by the at least one UE corresponding to the first channel,
  • Each of the at least one response information is a positive acknowledgement ACK information or a negative acknowledgement NACK information, the at least one PMI information being used to indicate at least one PMI indication direction;
  • first information of the first PMI indication direction according to the at least one response information in the first PMI indication direction in the at least one PMI direction indicated by the at least one PMI information, where the first PMI indicates a direction Determining a direction for any one of the at least one PMI indication directions;
  • the base station adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the base station increases a backoff window of the base station on the first channel for scheduling UEs in the first PMI indication direction. Or the base station keeps, on the first channel, the backoff window for scheduling the UE in the first PMI indication direction unchanged, and the base station does not schedule the first time in the second time.
  • PMI indicates the UE in the direction;
  • the base station Reducing, by the base station, a backoff window for scheduling a UE in the first PMI indication direction on the first channel, or the base station maintaining the base station on the first channel for scheduling the The first PMI indicates that the backoff window of the UE in the direction does not change.
  • the base station according to the at least one PMI direction indicated by the at least one PMI information, Acquiring at least one response information in the direction of the first PMI to obtain the first information of the first PMI indication direction, including at least one of the following steps:
  • the eNB obtains a ninth value according to a ratio of the number of ACK information in the at least one response information in the first PMI indication direction to the total number of at least one response information in the direction indicated by the first PMI. If the ninth value is greater than a preset ninth threshold, the first information in the direction indicated by the first PMI is equivalent ACK information;
  • the base station obtains a tenth value according to a ratio of the number of NACK information occupied by the at least one response information in the first PMI indication direction to the total number of at least one response information in the direction indicated by the first PMI, If the tenth value is greater than a preset tenth threshold, the first information in the direction indicated by the first PMI is equivalent NACK information;
  • the base station obtains an eleventh value according to the number of ACK information in the at least one response information in the direction indicated by the first PMI, and if the eleventh value is greater than a preset eleventh threshold,
  • the first information indicating the direction of the first PMI is equivalent ACK information
  • the base station obtains a twelfth value according to the number of NACK information in the at least one response information in the direction indicated by the first PMI, and if the twelfth value is greater than a preset twelfth threshold, The first information in the direction indicated by the first PMI is equivalent NACK information.
  • the second information is conflict information
  • the method further includes:
  • the base station adjusts the backoff window according to the first information, including the following steps to missing one:
  • the base station increases a backoff window of the base station on the first channel
  • the base station reduces a backoff window of the base station on the first channel, or the base station keeps backoff of the base station on the first channel The window does not change.
  • the base station acquires, according to the at least one conflict information sent by the at least one UE
  • the first information includes at least one of the following steps:
  • the base station obtains a thirteenth value according to a ratio of the number of the non-conflict information in the at least one conflict information to the total number of the at least one conflict information, if the thirteenth value is greater than a preset value a thirteenth threshold, wherein the first information is equivalent and does not conflict;
  • the base station obtains a fourteenth value according to a ratio of the number of the conflict information indicated by the at least one conflict information to the total number of the at least one conflict information, if the fourteenth value is greater than a preset number a fourteenth threshold, wherein the first information is an equivalent conflict;
  • the base station obtains a fifteenth value according to the number of the non-conflict information in the at least one conflict information, and if the fifteenth value is greater than a preset fifteenth threshold, the first information is equal No conflict of effects;
  • the base station obtains a sixteenth value according to the number of the conflict information indicated in the at least one conflict information, and if the sixteenth value is greater than a preset sixteenth threshold, the first information is equivalent conflict.
  • the second information is the response information
  • the method further includes:
  • At least one response information sent by the at least one UE where the at least one response information is response information of the at least one data packet transmitted by the at least one UE corresponding to the first channel, where the at least one Each response message in the response message is a positive acknowledgement ACK message or a negative acknowledgement NACK message;
  • the base station Obtaining, by the base station, the number of retransmissions of the automatic retransmission request ARQ and/or the hybrid automatic retransmission request HARQ of the first UE according to the response information sent by the first UE in the at least one UE Information, the number of retransmissions of the ARQ and/or HARQ of the first UE is the first information;
  • the base station adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the base station increases a backoff window of the base station on the first channel;
  • the base station decreases a backoff window of the base station on the first channel, or the base station Keeping the backoff window of the base station on the first channel unchanged.
  • the base station obtains the first information, including:
  • the base station performs CCA detection on the first channel, and acquires idle time information on the first channel and a total CCA detection time of the first channel;
  • the base station obtains a seventeenth value according to a ratio of an idle time of the first channel to a total time of CCA detection of the first channel, where the seventeenth value is the first information;
  • the base station adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the base station increases a backoff window of the base station on the first channel
  • the base station decreases a backoff window of the base station on the first channel, or the base station keeps the base station at the first The backoff window on the channel does not change.
  • the base station according to the idle channel evaluation CCA result on the first channel, obtains the first information, including:
  • the base station performs CCA detection on the first channel in units of CCA slots, and acquires the number of idle CCA slots of the first channel, where the CCA slot is a predefined length of time.
  • the number of idle CCA slots of one channel is the first information
  • the base station adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the base station If the base station does not detect N idle CCA slots within a length of time of M CCA slots on the first channel, the base station increases a backoff window of the base station on the first channel ;
  • the base station If the base station detects at least N idle CCA slots within a length of time of M CCA slots on the first channel, the base station decreases a backoff window of the base station on the first channel Or the base station keeps the backoff window of the base station on the first channel unchanged;
  • the time length of the M CCA time slots is the backoff window length of the current time of the base station on the first channel, and N is a random number between 0 and M randomly generated by the base station before performing CCA detection.
  • the base station obtains the first information, including:
  • the base station detects, on the first channel, a signal of the WI-FI system or the LAA system or other system, and obtains information about whether the base station conflicts with the WI-FI system or the LAA system or other systems on the first channel, The information indicating whether the base station conflicts with the WI-FI system or the LAA system or other systems on the first channel is the first information;
  • the base station adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the base station increases a backoff window of the base station on the first channel
  • the base station reduces a backoff window of the base station on the first channel, or the base station maintains a backoff window of the base station on the first channel constant.
  • the base station obtains the first information, including:
  • Adjusting, by the base station, the backoff window according to the first information including:
  • the base station reduces a backoff window of the base station on the first channel, where P is an integer not less than 0.
  • a second aspect of the present invention provides a method for adjusting a backoff window, including:
  • the user equipment UE acquires first information for indicating to adjust a backoff window on the first channel
  • the UE adjusts a backoff window of the UE on the first channel according to the first information
  • the acquiring, by the UE, the first information includes at least one of the following steps:
  • the UE acquires the first information according to whether the length of the backoff window on the first channel reaches a maximum length.
  • the second information is the response information
  • the method further includes:
  • the UE Receiving, by the UE, at least one response information sent by the base station, where the at least one response information is response information of the at least one data packet transmitted by the base station corresponding to the first channel, where each of the at least one response information
  • the response message is a positive acknowledgement ACK message or a negative acknowledgement NACK message;
  • the UE obtains, by the UE, the first information according to the second information sent by the base station, including:
  • Adjusting, by the UE, the backoff window of the UE on the first channel according to the first information including at least one of the following steps:
  • the UE increases a backoff window of the UE on the first channel
  • the UE decreases a backoff window of the UE on the first channel, or the UE keeps the UE on the first channel.
  • the backoff window does not change.
  • the UE acquires the foregoing according to an idle channel evaluation CCA result on the first channel.
  • a message including:
  • the UE obtains an eighteenth value according to a ratio of an idle time of the first channel to a total time of CCA detection of the first channel, where the eighteenth value is the first information;
  • Adjusting, by the UE, the backoff window of the UE on the first channel according to the first information including at least one of the following steps:
  • the UE increases a backoff window of the UE on the first channel
  • the UE decreases a backoff window of the UE on the first channel, or the UE keeps the UE in the first The backoff window on one channel does not change.
  • the UE obtains the first information according to the CCA result of the idle channel evaluation on the first channel, including:
  • the UE performs CCA detection on the first channel in units of CCA slots, and acquires the number of idle CCA slots of the first channel, where the CCA slot is a predefined length of time.
  • the number of idle CCA slots of one channel is the first information
  • Adjusting, by the UE, the backoff window of the UE on the first channel according to the first information including at least one of the following steps:
  • the UE If the UE does not detect N idle CCA slots within a length of time of M CCA slots on the first channel, the UE increases a backoff window of the UE on the first channel ;
  • the UE If the UE detects N idle CCA slots within a length of time of M CCA slots on the first channel, the UE reduces a backoff window of the UE on the first channel, Or the UE keeps the backoff window of the UE on the first channel unchanged;
  • the time length of the M CCA slots is the length of the backoff window of the current UE on the first channel, and N is a random number between 0 and M randomly generated by the UE before the CCA detection.
  • a fourth possible implementation of the second aspect of the invention The acquiring, by the UE, the first information according to the system conflict detection result on the first channel, including:
  • the UE detects a signal of the WI-FI system or the LAA system or other system on the first channel, and obtains information about whether the UE conflicts with the WI-FI system or the LAA system or other systems on the first channel, The information about whether the UE conflicts with the WI-FI system or the LAA system or other system on the first channel is the first information;
  • Adjusting, by the UE, the backoff window of the UE on the first channel according to the first information including at least one of the following steps:
  • the UE increases a backoff window of the UE on the first channel
  • the UE decreases a backoff window of the UE on the first channel, or the UE keeps a backoff window of the UE on the first channel constant.
  • the UE obtains the first information according to whether the length of the backoff window on the first channel reaches a maximum length, including:
  • the UE determines that the length of the backoff window of the UE on the first channel reaches the maximum length
  • Adjusting, by the UE, the backoff window of the UE on the first channel according to the first information including:
  • the UE reduces a backoff window of the UE on the first channel, where P is An integer not less than 0.
  • a third aspect of the present invention provides a base station, including:
  • An obtaining module configured to acquire first information used to indicate that a backoff window on the first channel is adjusted
  • An adjustment module configured to adjust the backoff window according to the first information
  • the obtaining, by the acquiring module, the first information includes at least one of the following steps:
  • the first information is obtained according to whether the length of the backoff window on the first channel reaches a maximum length.
  • the second information is the response information
  • the base station further includes:
  • a receiving module configured to receive at least one response information sent by the at least one UE, where the at least one response information is response information sent by the at least one UE corresponding to at least one data packet transmitted on the first channel, where Each of the at least one response message is a positive acknowledgement ACK message or a negative acknowledgement NACK message;
  • the acquiring module Acquiring, by the acquiring module, the first information according to the second information sent by the at least one user equipment UE, including:
  • the adjusting module adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the first information is equivalent NACK information, increasing a backoff window of the base station on the first channel;
  • the first information is equivalent ACK information, reducing a backoff window of the base station on the first channel, or keeping a backoff window of the base station on the first channel unchanged.
  • the acquiring module is configured to obtain, according to the at least one response information sent by the at least one UE
  • the first information includes at least one of the following steps:
  • the first information is equivalent ACK information
  • the first information is equivalent NACK information
  • the fourth value is greater than a preset fourth threshold, the first information is equivalent NACK information.
  • the second information is the response information
  • the base station further includes:
  • a receiving module configured to receive at least one response information sent by the at least one UE, where the at least one response information is response information sent by the at least one UE corresponding to at least one data packet transmitted on the first channel, where Each of the at least one response message is a positive acknowledgement ACK message or a negative acknowledgement NACK message;
  • the acquiring module Acquiring, by the acquiring module, the first information according to the second information sent by the at least one user equipment UE, including: acquiring the first information of the first UE according to the at least one response information sent by the first UE in the at least one UE
  • the first UE is any one of the at least one UE;
  • the adjusting module adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the first information of the first UE is equivalent NACK information, increase a backoff window used by the base station to schedule the first UE on the first channel, or keep the base station in the The backoff window for scheduling the first UE on the first channel is unchanged and the first UE is not scheduled in a first time;
  • the base station reduces, by the base station, a backoff window for scheduling the first UE on the first channel, or maintaining the base station in the The backoff window for scheduling the first UE on the first channel is unchanged.
  • the acquiring module according to the at least one sent by the first UE in the at least one UE Acquiring the first information of the first UE by using the response information, including at least one of the following steps:
  • the eighth value is greater than a preset eighth threshold, the first information of the first UE is Equivalent NACK information.
  • the second information is the response information and the precoding matrix indicating the PMI information
  • the base station further includes:
  • a receiving module configured to receive at least one response information and at least one PMI information sent by the at least one UE, where the at least one response information is a response that is sent by the at least one UE to correspond to at least one data packet transmitted on the first channel Information, each of the at least one response information is a positive acknowledgement ACK information or a negative acknowledgement NACK information, and the at least one PMI information is used to indicate at least one PMI indication direction;
  • the acquiring module Acquiring, by the acquiring module, the first information according to the second information sent by the at least one user equipment UE, including: at least one response in a direction indicated by the first PMI in the at least one PMI direction indicated by the at least one PMI information Obtaining first information of the first PMI indication direction, where the first PMI indication direction is any PMI indication direction of the at least one PMI indication direction;
  • the adjusting module adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the first information of the first PMI indication direction is the equivalent NACK information, increase the backoff window used by the base station to schedule the UE in the first PMI indication direction on the first channel, or Maintaining, by the base station, a backoff window for scheduling the UE in the first PMI indication direction on the first channel, and not scheduling the UE in the first PMI indication direction in a second time;
  • the base station is configured to schedule, in the first channel, a backoff window of the UE in the direction indicated by the first PMI, or to keep the base station on the first channel, where The UE's backoff window does not change.
  • the acquiring module is configured according to the at least one PMI direction indicated by the at least one PMI information
  • the first PMI indicates that the at least one response information in the direction acquires the first information of the first PMI indication direction, and includes at least one of the following steps:
  • the first information indicating the direction is equivalent ACK information
  • the first information in the indication direction is equivalent NACK information.
  • the second information is conflict information
  • the base station further includes:
  • a receiving module configured to receive at least one conflict information sent by the at least one UE, where the conflict information is used to indicate whether the base station conflicts with a WI-FI system or an LAA system or other systems on the first channel;
  • the acquiring module Acquiring, by the acquiring module, the first information according to the second information sent by the at least one user equipment UE, including: acquiring the first information according to the at least one conflict information sent by the at least one UE;
  • the adjusting module adjusts the backoff window according to the first information, including the following steps At least one of:
  • the first information is an equivalent collision, increasing a backoff window of the base station on the first channel;
  • the first information is equivalent non-collision, reducing a backoff window of the base station on the first channel, or keeping a backoff window of the base station on the first channel unchanged.
  • the acquiring module is configured to obtain, according to the at least one conflict information sent by the at least one UE
  • the first information includes at least one of the following steps:
  • the first information is an equivalent conflict
  • the second information is the response information
  • the base station further includes:
  • a receiving module configured to receive at least one response information sent by the at least one UE, where the at least one response information is response information sent by the at least one UE corresponding to at least one data packet transmitted on the first channel, where Each of the at least one response message is a positive acknowledgement ACK message or a negative acknowledgement NACK message;
  • the acquiring module Acquiring, by the acquiring module, the first information according to the second information sent by the at least one user equipment UE, including: obtaining an automatic retransmission request ARQ of the first UE according to the response information sent by the first UE in the at least one UE And/or hybrid automatic retransmission requesting HARQ retransmission times information, where the number of retransmissions of the ARQ and/or HARQ of the first UE is the first information;
  • the adjusting module adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the number of retransmissions of the ARQ and/or HARQ of the first UE is less than a preset eighteenth threshold, reducing a backoff window of the base station on the first channel, or maintaining the base station in the The backoff window on the first channel is unchanged.
  • the acquiring, by the acquiring module, the acquiring the first information according to the CCA result of the idle channel evaluation on the first channel including:
  • the adjusting module adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the seventeenth value is greater than a preset twentieth threshold, reducing a backoff window of the base station on the first channel, or maintaining a backoff window of the base station on the first channel change.
  • the acquiring module obtains the first information, including:
  • the adjusting module adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • N are not detected within the length of the M CCA slots on the first channel Emptying the CCA slot, increasing a backoff window of the base station on the first channel;
  • the time length of the M CCA time slots is the backoff window length of the current time of the base station on the first channel, and N is a random number between 0 and M randomly generated by the base station before performing CCA detection.
  • the acquiring module obtains the first information, including:
  • Detecting signals of the WI-FI system or the LAA system or other systems on the first channel and obtaining information on whether the base station conflicts with the WI-FI system or the LAA system or other systems on the first channel, the base station and Whether the information of the WI-FI system or the LAA system or other system conflicts on the first channel is the first information;
  • the adjusting module adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the backoff window of the base station on the first channel is reduced, or the backoff window of the base station on the first channel is kept unchanged.
  • the acquiring module according to whether the length of the backoff window on the first channel reaches a maximum length, obtains the first information, including:
  • the adjusting module adjusts the backoff window according to the first information, including:
  • the backoff window of the base station on the first channel is decreased, where P is not less than 0. The integer.
  • a fourth aspect of the present invention provides a UE, including:
  • An obtaining module configured to acquire first information used to indicate that a backoff window on the first channel is adjusted
  • an adjusting module configured to adjust, according to the first information, a backoff window of the UE on the first channel
  • the obtaining, by the acquiring module, the first information includes at least one of the following steps:
  • the second information is the response information
  • the UE further includes:
  • a receiving module configured to receive at least one response information sent by the base station, where the at least one response information is response information of the at least one data packet that is sent by the base station to the first channel, where the at least one response information is Each response message is a positive acknowledgement ACK message or a negative acknowledgement NACK message;
  • the acquiring module Acquiring, by the acquiring module, the first information according to the second information sent by the base station, including:
  • the adjusting module according to the first information, adjusting a backoff window of the UE on the first channel, including at least one of the following steps:
  • the first information includes at least one NACK information, increasing a backoff window of the UE on the first channel;
  • the first information includes at least one ACK information, reducing a backoff window of the UE on the first channel, or the UE keeps a backoff window of the UE on the first channel change.
  • the acquiring, by the acquiring module, the acquiring the first information according to the CCA result of the idle channel evaluation on the first channel including:
  • the adjusting module according to the first information, adjusting a backoff window of the UE on the first channel, including at least one of the following steps:
  • the eighteenth value is less than a preset twenty-first threshold, increasing a backoff window of the UE on the first channel;
  • the eighteenth value is greater than a preset twenty-second threshold, reducing a backoff window of the UE on the first channel, or maintaining a backoff window of the UE on the first channel constant.
  • the acquiring, by the acquiring module, the acquiring the first information according to the CCA result of the idle channel evaluation on the first channel including:
  • the adjusting module according to the first information, adjusting a backoff window of the UE on the first channel, including at least one of the following steps:
  • the UE does not detect N idle CCA slots within a length of time of the M CCA slots on the first channel, increasing a backoff window of the UE on the first channel;
  • the UE detects N idle CCA slots within a length of time of M CCA slots on the first channel, reducing a backoff window of the UE on the first channel, or maintaining The backoff window of the UE on the first channel is unchanged;
  • the time length of the M CCA slots is the length of the backoff window of the current UE on the first channel, and N is a random number between 0 and M randomly generated by the UE before the CCA detection.
  • the acquiring, by the acquiring module, the acquiring the first information according to the system conflict detection result on the first channel includes:
  • Detecting signals of the WI-FI system or the LAA system or other systems on the first channel, and obtaining whether the UE and the WI-FI system or the LAA system or other systems are rushed on the first channel The information indicating whether the UE conflicts with the WI-FI system or the LAA system or other system on the first channel is the first information;
  • the adjusting module according to the first information, adjusting a backoff window of the UE on the first channel, including at least one of the following steps:
  • the first information indicates that the system does not conflict, reducing a backoff window of the UE on the first channel, or keeping a backoff window of the UE on the first channel unchanged.
  • the acquiring module according to whether the length of the backoff window on the first channel reaches a maximum length, obtains the first information, including :
  • the adjusting module according to the first information, adjusting a backoff window of the UE on the first channel, includes:
  • the backoff window of the UE on the first channel is reduced, where P is not less than 0. The integer.
  • a fifth aspect of the present invention provides a base station, including: a processor, a memory, a communication interface, and a system bus, wherein the memory and the communication interface are connected to the processor through the system bus and complete communication with each other;
  • the memory is configured to store a computer execution instruction
  • the communication interface is used to communicate with other devices
  • the processor for executing the computer-executing instructions, performing the method of any one of the first to thirteenth possible implementations of the first aspect of the invention and the first aspect of the invention.
  • a sixth aspect of the present invention provides a UE, including: a processor, a memory, a communication interface, and a system bus, where the memory and the communication interface are connected to the processor through the system bus and complete communication with each other;
  • the memory is configured to store a computer execution instruction
  • the communication interface is used to communicate with other devices
  • the processor for executing the computer to execute instructions to perform the method of any of the first to fifth possible implementations of the second aspect of the invention and the second aspect of the invention.
  • the base station acquires first information for indicating that the backoff window on the first channel is adjusted, and adjusts the backoff window according to the first information.
  • the UE acquires first information for indicating a backoff window on the first channel, and adjusts a backoff window of the UE on the first channel according to the first information.
  • FIG. 1 is a flowchart of a method for adjusting a backoff window according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of a method for adjusting a backoff window according to Embodiment 2 of the present invention
  • FIG. 3 is a flowchart of a method for adjusting a backoff window according to Embodiment 3 of the present invention.
  • FIG. 4 is a flowchart of a method for adjusting a backoff window according to Embodiment 4 of the present invention.
  • FIG. 5 is a flowchart of a method for adjusting a backoff window according to Embodiment 5 of the present invention.
  • FIG. 6 is a flowchart of a method for adjusting a backoff window according to Embodiment 6 of the present invention.
  • FIG. 7 is a flowchart of a method for adjusting a backoff window according to Embodiment 7 of the present invention.
  • Embodiment 8 is a flowchart of a method for adjusting a backoff window according to Embodiment 8 of the present invention.
  • Embodiment 9 is a flowchart of a method for adjusting a backoff window according to Embodiment 9 of the present invention.
  • FIG. 10 is a flowchart of a method for adjusting a backoff window according to Embodiment 10 of the present invention.
  • FIG. 11 is a flowchart of a method for adjusting a backoff window according to Embodiment 11 of the present invention.
  • FIG. 12 is a flowchart of a method for adjusting a backoff window according to Embodiment 12 of the present invention.
  • FIG. 13 is a flowchart of a method for adjusting a backoff window according to Embodiment 13 of the present invention.
  • FIG. 14 is a flowchart of a method for adjusting a backoff window according to Embodiment 14 of the present invention.
  • Embodiment 15 is a schematic structural diagram of a base station according to Embodiment 15 of the present invention.
  • FIG. 16 is a schematic structural diagram of a base station according to Embodiment 16 of the present invention.
  • FIG. 17 is a schematic structural diagram of a UE according to Embodiment 24 of the present invention.
  • FIG. 18 is a schematic structural diagram of a UE according to a twenty-fifth embodiment of the present invention.
  • Embodiment 29 of the present invention is a schematic structural diagram of a base station according to Embodiment 29 of the present invention.
  • FIG. 20 is a schematic structural diagram of a UE according to Embodiment 30 of the present invention.
  • the LTE system, the LAA-LTE, and the U-LTE system need to consider the communication system friendly communication with the existing application license-free spectrum resources when communicating using the unlicensed spectrum resources.
  • channel access mechanisms for LBT have been introduced in some countries and regions, such as Europe and Japan. According to European regulations, the LBE-based LBT mechanism and the CSMA/CA mechanism used by the Wi-Fi system are all compliant. These three channel access mechanisms are briefly described below.
  • the FBE-based LBT mechanism is characterized in that the device needs to perform CCA detection on the channel through energy detection for a period of time from a fixed time before the data transmission on the working channel, and the length of the period should not be less than 20 us. Can be called CCA slot. If the device determines through the CCA detection that the channel in the CCA slot is idle, the device can start signaling at a predetermined time in a fixed frame period format. If the device determines that the channel in the CCA slot is occupied by the CCA test, it can only wait for the next fixed time to start the CCA detection.
  • the LBE-based LBT mechanism is characterized in that the device can perform CCA detection on the channel through energy detection for a period of time from any time before the data transmission on the working channel, and the length of the period should not be less than 20 us. Can be called CCA slot.
  • the device can perform signal transmission on the channel by determining that the channel in a CCA slot is idle through CCA detection.
  • the device needs to perform ECCA (Extended CCA) detection.
  • the device Before each ECCA test, the device needs to generate a random integer N in the counter. N is a randomly selected number from 1 to q. N can be considered as the backoff length.
  • q can be considered as the length of the Contention Window. .
  • the ECCA detection process is also a backoff procedure, so the contention window is also called the Backoff Window.
  • q is a value that the device claims to be, and the value can be chosen from 4 to 32.
  • the device judges whether the channel in one CCA slot is idle by CCA detection every time. If the channel is idle, the N value in the counter is decremented by 1. If the channel detection is busy, the N value in the counter does not change. When the value of N in the counter is reduced to 0, the device can start data transmission.
  • the maximum channel occupancy time for each transmission should be less than (13/32)*q milliseconds.
  • the feature of the CSMA/CA mechanism used by the Wi-Fi system is that before each channel is accessed, the device needs to generate a pseudo-random integer M-presence counter uniformly distributed in the range [0, CW], where CW is the contention window.
  • the length of M can be considered as the retreat length.
  • the contention window of the Wi-Fi system has a predefined minimum and maximum values, and the initial value of the CW is a predefined minimum.
  • the device needs to determine the channel idle time in the interframe space (IFS) before each start of the backoff process.
  • the interframe length can protect the response information transmitted by other Wi-Fi devices from interference.
  • Wi-Fi defines multiple IFSs of different lengths to distinguish the priorities of different services.
  • the length of the IFS is DIFS (DCF interframe space).
  • DIFS distributed coordination function
  • the device needs to first determine that the channel is idle during the DIFS time before starting the backoff process.
  • the device determines whether the channel is idle in a backoff slot (also referred to as a CCA slot) each time through the CCA detection. If the channel is idle, the M value in the counter is decremented by 1. If the channel detection is busy, the M value in the counter does not change, and the device needs to judge again that the channel is idle during the DIFS time, and the backoff process can be resumed. When the M value in the counter is reduced to 0, the device can start data transmission.
  • a backoff slot also referred to as a CCA slot
  • the device waits for the receiver to return an ACK (Acknowledge) message that correctly receives the packet. If the device correctly receives the ACK information, then the length of the contention window CW is reset to the minimum value; if the device is in advance If the ACK information is not correctly received within the defined time, the length CW of the contention window is doubled.
  • ACK Acknowledge
  • the LAA system or other systems using unlicensed spectrum resources, only follow the LBT mechanism required by regulations, it will cause the LAA system or other systems to compete with the Wi-Fi system for channel resources on the unlicensed spectrum.
  • the LAA system or other systems may preempt the channel with greater probability, thereby reducing the probability of the Wi-Fi system accessing the channel and failing to ensure fair and Wi-Fi coexistence.
  • the LAA system adopts a variable backoff window length similar to Wi-Fi in the channel access process.
  • the back-off window adjustment conditions of the Wi-Fi system cannot be directly used in the LAA system. The specific technical differences between the two are as follows:
  • the LAA system and the Wi-Fi system have different protocol layer architectures.
  • the LAA system has a Hybrid Automatic Repeat Request (HARQ) at the physical layer and an Automatic Repeat-ReQuest (ARQ) for Radio Link Control (RLC).
  • HARQ Hybrid Automatic Repeat Request
  • ARQ Automatic Repeat-ReQuest
  • RLC Radio Link Control
  • the feedback has both ACK information.
  • NACK Negative Acknowledge
  • the Wi-Fi system only has the ARQ of the MAC layer, and only feeds back the ACK, and does not feed back the NCK, so it cannot be applied to the LAA system.
  • the LAA system is based on a multi-user scheduling mechanism, while the Wi-Fi system currently has only single-user scheduling.
  • the exponential window doubled under the single-user scheduling mechanism of the Wi-Fi system is not applicable to the LAA system.
  • the LAA system has better anti-interference performance.
  • the LAA system can correctly receive data even if there is some interference, so the LAA system can tolerate certain conflicts. That is, when the LAA system and the LAA system coexist, a certain collision is allowed to occur, that is, the allowable backoff window remains unchanged.
  • the anti-interference of the Wi-Fi system is worse than that of the LAA system, that is, in the event of a conflict, the Wi-Fi system's back-off window will double regardless of any system coexistence.
  • the LAA system is based on central scheduling, allowing for more flexible backoff window adjustments, ie allowing for closed loop feedback or open loop adjustment.
  • the doubling of the back-off window of the Wi-Fi system can only be adjusted according to the feedback of the receiving node, and the open-loop adjustment cannot be performed.
  • the present invention proposes a back-off window adjustment method that can be used in a multi-user scheduling system to ensure that different systems on the license-free spectrum coexist in a fair and friendly manner.
  • the LBT mechanism required by the regulations and the channel access mechanism adopted by the Wi-Fi system differ from the length of the backoff window and the adjustment method.
  • the Wi-Fi system introduces an extra before each start/recovery of the backoff process. Delay (defer, that is, the device needs to ensure that the channel is idle during the time of the IFS), and is used to protect the response information transmitted by other devices in the same system from interference.
  • the feedback of the response information is 4 milliseconds after the data packet is transmitted, and the response information can be fed back through other channels different from the channel transmitted by the data packet (such as the channel on the licensed spectrum), so there is no need to Introduce additional delays before each start/recovery of the backoff process.
  • the LAA system introduces a similar delay mechanism in the channel access mechanism on the unlicensed spectrum.
  • a user equipment may also be called a terminal (Terminal), a mobile station (Mobile Station), a mobile terminal (Mobile Terminal), a mobile user equipment, etc., and may be wireless.
  • An access network eg, RAN, Radio Access Network
  • MTC UE mechanical communication device
  • the base station may be an evolved base station eNB, a macro base station (Macro), a micro base station (also referred to as a "small base station") (Pico), a pico base station, and an LTE system or an LAA-LTE system.
  • AP Access Point
  • TP Transmission Point
  • the invention is not limited thereto. For convenience of description, the following embodiments will be described by taking a base station and a user equipment as an example.
  • the method and apparatus are applicable to other channel access mechanisms than the LAA, and the present invention is not limited thereto.
  • FIG. 1 is a flowchart of a method for adjusting a backoff window according to Embodiment 1 of the present invention. As shown in FIG. 1, the method in this embodiment may include the following steps:
  • Step 101 The base station acquires first information used to indicate that the backoff window on the first channel is adjusted.
  • the base station may have multiple channels on the licensed spectrum and the unlicensed spectrum.
  • the first channel in this embodiment does not specifically refer to a certain channel of the base station, and the first channel may be in multiple channels of the base station. Any of the channels.
  • the base station acquires first information for indicating adjustment of the backoff window on the first channel, and may include at least one of the following steps:
  • the base station acquires the first information according to the second information sent by the at least one UE;
  • the base station acquires the first information according to the CCA result on the first channel
  • the base station acquires the first information according to the system conflict detection result on the first channel
  • the base station acquires the first information according to whether the length of the backoff window on the first channel reaches a maximum length.
  • the second information sent by the UE may be: response information, and/or channel state information (CSI) information, and/or conflict information.
  • the response information includes ACK information and/or NACK information.
  • the CSI information may be Channel Quality Indicator (CQI) information, and/or, Channel Precoding Matrix Indicator (PMI) information, and/or Rank Indicator (RI) information.
  • CQI Channel Quality Indicator
  • PMI Channel Precoding Matrix Indicator
  • RI Rank Indicator
  • the collision information is used to indicate whether the base station conflicts with the WI-FI system or the LAA system or other systems on the first channel.
  • the first information may be: equivalent response information or equivalent conflict information
  • the equivalent response information is equivalent ACK information or equivalent NACK information
  • the equivalent conflict information is an equivalent conflict or an equivalent non-collision.
  • Step 102 The base station adjusts the backoff window according to the first information.
  • the base station and/or the UE need to contend for the channel before performing communication using the channel resources on the unlicensed spectrum, and perform channel access mechanisms at the base station and/or the UE device.
  • the backoff window is a parameter value used to determine the backoff length before starting the backoff process.
  • the backoff window can have a predefined minimum length and a maximum length. Normally, the initial value of the backoff window can be a predefined minimum length.
  • the base station and/or the UE contend for the right to use the channel according to the backoff window of length q, and the maximum channel occupation time allowed for the secondary transmission should be less than (13/32)*q milliseconds. Therefore, if the backoff window length is not a fixed value, the base station may notify the UE by means of signaling in the manner of signaling the backoff window length, or predefining the backoff window adjustment rule to enable the UE to obtain the backoff window length according to the predefined rule. The UE may obtain corresponding maximum channel occupation time information according to the obtained backoff window length information.
  • the backoff window may be: a backoff window of the base station on the first channel, a backoff window used by the base station to schedule the first UE on the first channel, and a base station used for scheduling on the first channel.
  • the first PMI indicates a backoff window in the direction.
  • the first UE is any one of all UEs scheduled by the base station on the first channel, and the first PMI indication direction is that the base station is used on the first channel to schedule any PMI indication direction in all PMI indication directions.
  • the backoff window is the backoff window of the base station on the first channel
  • the backoff window used by the base station to schedule all UEs on the first channel is the same; and the backoff window is the backoff used by the base station to schedule the first UE on the first channel.
  • the window is different when the base station schedules different UEs on the first channel, and the backoff window used to schedule different UEs is different.
  • the base station When the backoff window is used by the base station to schedule the backoff window of the UE in the PMI indication direction on the first channel, the base station is in the When one channel schedules UEs in different PMI indication directions, the backoff window for scheduling UEs in different PMI indication directions is different, and the base station is configured to schedule the backoff windows of UEs in the same PMI indication direction.
  • the base station adjusts the backoff window to include the following three situations: the base station increases the backoff window, or the base station decreases the backoff window, or the base station keeps the backoff window unchanged.
  • the base station may increase the length of the backoff window in the following manner: the base station increases the length of the backoff window in an exponential manner; or the base station grows in a linear manner. Increasing the length of the backoff window; or, the base station selects a larger length in the set of lengths of the predefined backoff window; or, the base station increases the backoff window to the maximum length, or the base station increases the length of the backoff window in other manners.
  • the base station may specifically reduce the length of the backoff window in several ways: the base station reduces the length of the backoff window in an exponentially decaying manner; or, the base station decreases the length of the backoff window in a linear manner; or, the base station is in a predefined backoff A smaller length is selected from the length set of the window; or, the base station rolls back the length of the backoff window to an initial value, or the base station otherwise reduces the length of the backoff window.
  • the base station obtains the first information for indicating the adjustment of the backoff window on the first channel, and then adjusts the backoff window according to the first information.
  • both the LAA system and the WIFI system adjust their own backoff window, so that the WIFI system and the LAA system can compete for channel resources fairly after the channel conflicts.
  • FIG. 2 is a flowchart of a method for adjusting a backoff window according to Embodiment 2 of the present invention.
  • the second information is response information sent by the UE
  • the first information is equivalent response information.
  • the method provided in this embodiment may include the following steps:
  • Step 201 The base station receives at least one response message sent by at least one UE.
  • the at least one response message is response information sent by the at least one UE to the at least one data packet transmitted on the first channel, where each of the at least one response information may be ACK information or NACK information.
  • the base station supports a multi-user scheduling mechanism. After the base station sends a data packet to the at least one UE through the first channel, the UE returns a response message to the data packet transmitted on the first channel to the base station.
  • the first channel may include P scheduling units, where each scheduling unit includes resources in the time domain and the frequency domain, and may be used to schedule at least one data packet, where the base station receives at least one response message sent by at least one UE.
  • the base station receives the Q pieces of response information sent by the at least one UE on the P scheduling units on the first channel.
  • the P scheduling units may be all scheduling units or partial scheduling units used by the base station in the previous scheduling period, or all scheduling units or partial scheduling units used by the base station in the historical scheduling, and the base station is in the historical scheduling. All scheduling units used in the scheduling unit may be the average of the scheduling units used by the base station in the historical scheduling on the first channel, and the average of the scheduling units used by the base station in the historical scheduling on the first channel may pass the statistical history scheduling data. get.
  • the backoff window used by the base station to compete for channel resources for the i-th data transmission may be by the i-2.
  • the response information corresponding to the scheduling unit used in the secondary data transmission is determined.
  • Q is a positive integer not less than P. It should be understood that when there is no space division multiplexing in the system, each scheduling unit is used to schedule one data packet, Q is equal to P; when there is space division multiplexing in the system, each scheduling unit is used to schedule at least one data packet. , Q is greater than P.
  • the Q response information received by the base station includes ACK information and/or NACK information. When the UE correctly receives all data packets sent by the base station on the first channel, the Q response information is all ACK information, when the UE is only correct. Receiving a partial data packet sent by the base station on the first channel, the base station transmitting on the first channel When the partial data packet UE is not correctly received, the Q response information includes ACK information and NACK information. When all the data packets transmitted by the base station on the first channel are not correctly received, the Q response information is all NACK. information.
  • Step 202 The base station acquires the first information according to the at least one response information sent by the at least one UE.
  • the first information is equivalent response information
  • the base station acquires the first information according to the at least one response information sent by the at least one UE, including at least one of the following steps:
  • the base station obtains a first value according to a ratio of the number of the ACK information in the at least one response information to the total number of the at least one response information. If the first value is greater than the preset first threshold, the first information is an equivalent ACK. information;
  • the base station obtains a second value according to a ratio of the number of the NACK information in the at least one response information to the total number of the at least one response information, and if the second value is greater than the preset second threshold, the first information is an equivalent NACK. information;
  • the base station obtains a third value according to the number of ACK information in the at least one response information, and if the third value is greater than the preset third threshold, the first information is equivalent ACK information;
  • the base station obtains a fourth value according to the number of NACK information occupied by the at least one response information. If the fourth value is greater than a preset fourth threshold, the first information is equivalent NACK information.
  • the value ranges of the first value and the second value are: greater than or equal to 0, less than or equal to 1, and the range of the first threshold and the second threshold are both greater than 0 and less than 1.
  • the first value and the second value may be the same or different.
  • the third value and the fourth value are all integers greater than or equal to 0, and the third threshold and the fourth threshold are both positive integers greater than or equal to 1, wherein the third threshold and the fourth threshold may be the same It can also be different.
  • Step 203 The base station adjusts the backoff window according to the first information.
  • the base station adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the base station increases the backoff window of the base station on the first channel; if the first information is the equivalent ACK information, the base station reduces the length of the backoff window of the base station on the first channel, Alternatively, the base station keeps the base station's backoff window on the first channel unchanged.
  • the first information is equivalent to the NACK information, indicating that the first channel conflict is relatively large.
  • the backoff window of the base station on the first channel should be increased, so that the probability of the base station accessing the channel becomes smaller. Avoid channel conflicts.
  • the first information is equivalent ACK information, said The possibility of the first channel collision is small.
  • the probability of the base station accessing the channel should be increased. Therefore, it is necessary to reduce the backoff window of the base station on the first channel, or keep the base station in the first The backoff window on one channel does not change.
  • the base station may determine whether the backoff window of the base station on the first channel should be reduced according to the current throughput of the LAA system and/or the channel quality of the first channel, or whether the backoff window of the base station on the first channel is kept unchanged. For example, if the current throughput of the LAA system is small and the channel quality of the first channel is good, the base station can reduce the backoff window of the base station on the first channel. If the current throughput of the LAA system is large, the base station The backoff window of the base station on the first channel can be kept unchanged.
  • the base station obtains the first information according to the at least one response information by receiving the at least one response information sent by the at least one UE, and if the first information is the equivalent NACK information, the base station increases the backoff of the base station on the first channel. a window; if the first information is equivalent ACK information, the base station reduces the backoff window of the base station on the first channel, or the base station keeps the backoff window of the base station on the first channel unchanged.
  • both the LAA system and the WIFI system adjust their own backoff window, so that the WIFI system and the LAA system can compete for channel resources fairly after the channel conflicts.
  • FIG. 3 is a flowchart of a method for adjusting a backoff window according to Embodiment 3 of the present invention.
  • the base station calculates the equivalent response information of each UE, according to each UE.
  • the equivalent response information adjusts the backoff window of the base station on the first channel for scheduling each UE.
  • the method provided in this embodiment may include the following steps:
  • Step 301 The base station receives at least one response message sent by at least one UE.
  • step 201 For the specific implementation of this step, refer to the related description of step 201 in the second embodiment, and details are not described herein again.
  • Step 302 The base station acquires first information of the first UE according to the at least one response information sent by the first UE in the at least one UE, where the first UE is any UE of the at least one UE.
  • the first information of the first UE is the equivalent response information of the first UE
  • the base station acquires the first information of the first UE according to the at least one response information sent by the first UE in the at least one UE, including the following steps. At least one of:
  • the base station obtains a fifth value according to a ratio of the number of the ACK information in the at least one response information sent by the first UE to the total number of the at least one response information sent by the first UE, if the fifth value is greater than the preset fifth The threshold, the first information of the first UE is equivalent ACK information.
  • the base station obtains a sixth value according to a ratio of the number of the NACK information in the at least one response information sent by the first UE to the total number of the at least one response information sent by the first UE, if the sixth value is greater than the preset sixth The threshold, the first information of the first UE is equivalent NACK information.
  • the base station obtains a seventh value according to the number of ACK information in the at least one response information sent by the first UE. If the seventh value is greater than the preset seventh threshold, the first information of the first UE is equivalent ACK information.
  • the base station obtains an eighth value according to the number of the NACK information in the at least one response information sent by the first UE. If the eighth value is greater than the preset eighth threshold, the first information of the first UE is the equivalent NACK information.
  • the value ranges of the fifth value and the sixth value are all: greater than or equal to 0, less than or equal to 1, and the fifth threshold and the sixth threshold are all in a range of values greater than 0 and less than 1.
  • the fifth value and the sixth value may be the same or different.
  • the value ranges of the seventh value and the eighth value are all integers greater than or equal to 0, and the values of the seventh threshold and the eighth threshold are both positive integers greater than or equal to 1, wherein the seventh threshold and the eighth threshold may be the same It can also be different.
  • the base station obtains the equivalent response information of each UE according to the at least one response information sent by each UE. Since the response information of each UE may be different, the first information of each UE obtained by the base station may also be different.
  • Step 303 The base station adjusts, according to the first information of the first UE, a backoff window used by the base station to schedule the first UE on the first channel.
  • the base station adjusts, according to the first information of the first UE, a backoff window used by the base station to schedule the first UE on the first channel, including at least one of the following steps:
  • the base station increases the backoff window used by the base station to schedule the first UE on the first channel, or the base station keeps the base station used to schedule the first UE on the first channel.
  • the backoff window does not change and the base station does not schedule the first UE for the first time.
  • the first time can be a predefined length of time.
  • the base station reduces the backoff window used by the base station to schedule the first UE on the first channel, or the base station keeps the base station used to schedule the first UE on the first channel.
  • the backoff window does not change.
  • the adjusted base station may use the first channel to schedule a possible difference in the backoff window of each UE. For example, for some UE base stations The backoff window used by the base station to schedule the UE on the first channel can be increased. For some UE base stations, the backoff window used by the base station to schedule the UE on the first channel may be reduced. For some UE base stations, the base station may remain in the base station. The backoff window for scheduling the UE on the first channel is unchanged.
  • the base station receives the at least one response information sent by the at least one UE, and the base station acquires the first information of the first UE according to the at least one response information sent by the first UE in the at least one UE, and adjusts according to the first information of the first UE.
  • the base station is configured to schedule a backoff window of the first UE on the first channel.
  • the second information is the response information and the PMI information sent by the UE.
  • the method provided in this embodiment may be used. Includes the following steps:
  • Step 401 The base station receives at least one response information and at least one PMI information sent by at least one UE.
  • the at least one PMI information is used to indicate that at least one PMI indicates a direction.
  • the at least one response information sent by the base station in this step refer to the related description of step 201 in the second embodiment, and details are not described herein again.
  • Step 402 The base station acquires first information of the first PMI indication direction according to the at least one response information in the first PMI indication direction in the at least one PMI direction indicated by the at least one PMI information, where the first PMI indication direction is at least one PMI indication. Any PMI in the direction indicates the direction.
  • the base station acquires first information of the first PMI indication direction according to the at least one response information in the first PMI indication direction in the at least one PMI direction indicated by the at least one PMI information, including at least one of the following steps:
  • the eNB obtains a ninth value according to a ratio of the number of ACK information in the at least one response information in the first PMI indication direction to the total number of at least one response information in the direction indicated by the first PMI, if the ninth value is greater than the pre- The ninth threshold is set, and the first information in the direction indicated by the first PMI is equivalent ACK information.
  • the ratio of the number of NACK information occupied by the base station to the total number of at least one response information in the direction indicated by the first PMI according to the at least one response information in the direction indicated by the first PMI To the tenth value, if the tenth value is greater than the preset tenth threshold, the first information in the direction indicated by the first PMI is equivalent NACK information.
  • the base station obtains an eleventh value according to the number of ACK information in the at least one response information in the direction indicated by the first PMI, and if the eleventh value is greater than the preset eleventh threshold, the first PMI indicates the first direction
  • the information is equivalent ACK information.
  • the base station obtains a twelfth value according to the number of NACK information in the at least one response information in the direction indicated by the first PMI, and if the twelfth value is greater than the preset twelfth threshold, the first PMI indicates the first direction
  • the information is equivalent NACK information.
  • the value ranges of the ninth value and the tenth value are all: greater than or equal to 0, less than or equal to 1, and the range of values of the ninth threshold and the tenth threshold are both greater than 0 and less than 1.
  • the ninth value and the tenth value may be the same or different.
  • the value range of the eleventh value and the twelfth value is an integer greater than or equal to 0, and the range of the eleventh threshold and the twelfth threshold are both positive integers greater than or equal to 1, wherein the eleventh threshold sum
  • the twelfth threshold may be the same or different.
  • the precoding matrices may be different, but the directions indicated are the same.
  • the PMIs in the embodiment indicate the same direction, and may indicate that the directions are exactly the same, or that the directions of directions within a certain error range are the same.
  • Step 403 The base station adjusts, according to the first information of the first PMI indication direction, a backoff window used by the base station to schedule the UE in the direction indicated by the first PMI on the first channel.
  • the base station adjusts, according to the first information of the direction indicated by the first PMI, the backoff window used by the base station to schedule the UE in the direction indicated by the first PMI on the first channel, including at least one of the following steps:
  • the base station increases the backoff window of the base station on the first channel for scheduling the UE in the direction indicated by the first PMI, or the base station keeps the base station in the first channel.
  • the backoff window for scheduling the UE in the direction indicated by the first PMI is unchanged and the base station does not schedule the UE in the direction indicated by the first PMI in the second time.
  • the second time can be a predefined length of time.
  • the base station reduces the backoff window of the base station for scheduling the UE in the direction of the first PMI indication on the first channel, or the base station keeps the base station at the first a backoff window on the channel for scheduling UEs in the direction indicated by the first PMI The mouth is unchanged.
  • the adjusted base station is different on the first channel for scheduling the backoff window of the UE in each PMI indication direction.
  • the base station may increase the backoff window of the base station on the first channel for scheduling the UE in the direction indicated by the PMI.
  • the base station may reduce the base station on the first channel.
  • the base station may keep the base station scheduling the backoff window of the UE in the direction indicated by the PMI on the first channel.
  • the base station receives the at least one response information and the at least one PMI information sent by the at least one UE, and acquires the first information according to the at least one response information in the first PMI indication direction in the at least one PMI direction indicated by the at least one PMI information.
  • the PMI indicates the first information of the direction
  • the base station adjusts, according to the first information of the first PMI indication direction, a backoff window used by the base station to schedule the UE in the direction indicated by the first PMI on the first channel.
  • FIG. 5 is a flowchart of a method for adjusting a backoff window according to Embodiment 5 of the present invention.
  • the second information is conflict information sent by the UE.
  • the method provided in this embodiment may include the following steps. :
  • Step 501 The base station receives at least one conflict information sent by at least one UE.
  • the collision information is used to indicate whether the base station conflicts with the WI-FI system or the LAA system or other systems on the first channel.
  • the UE performs channel conflict detection. When the UE detects that the base station conflicts with the WI-FI system or the LAA system or other systems on the first channel, the UE sends the conflict information to the base station.
  • Step 502 The base station acquires the first information according to the at least one conflict information sent by the at least one UE.
  • the first information is equivalent conflict information
  • the equivalent conflict information includes an equivalent conflict or an equivalent non-collision
  • the base station acquires the first information according to the at least one conflict information sent by the at least one UE, including at least one of the following steps.
  • the base station obtains a thirteenth value according to a ratio of the number of the non-conflict information in the at least one conflict information to the total number of the at least one conflict information, if the thirteenth value is greater than the preset number Thirteen thresholds, then the first information is equivalent and does not conflict.
  • the base station obtains a fourteenth value according to a ratio of the number of the conflict information indicated by the at least one conflict information to the total number of the at least one conflict information, and if the fourteenth value is greater than the preset fourteenth threshold, the first information Is an equivalent conflict.
  • the base station obtains a fifteenth value according to the number of the non-conflict information in the at least one conflict information, and if the fifteenth value is greater than the preset fifteenth threshold, the first information is equivalent non-collision;
  • the base station obtains a sixteenth value according to the number of the conflict information indicated in the at least one conflict information. If the sixteenth value is greater than the preset sixteenth threshold, the first information is an equivalent conflict.
  • the range of the thirteenth value and the fourteenth value are both: greater than or equal to 0, less than or equal to 1, and the thirteenth threshold and the fourteenth threshold are all greater than 0 and less than 1, wherein The thirteenth threshold and the fourteenth threshold may be the same or different.
  • the fifteenth value and the sixteenth value range are all integers greater than or equal to 0, and the fifteenth threshold and the sixteenth threshold value range are all positive integers greater than or equal to 1, wherein the fifteenth threshold sum The sixteenth threshold may be the same or different.
  • Step 503 The base station adjusts the backoff window according to the first information.
  • the base station adjusts the backoff window according to the first information, and includes at least one of the following steps: if the first information is an equivalent collision, the base station increases the backoff window of the base station on the first channel. If the first information is equivalent non-collision, the base station reduces the backoff window of the base station on the first channel, or the base station keeps the backoff window of the base station on the first channel unchanged.
  • the base station receives at least one conflict information sent by the at least one UE, acquires the first information according to the at least one conflict information sent by the at least one UE, and adjusts the length of the backoff window of the base station on the first channel according to the first information.
  • both the LAA system and the WIFI system adjust their own backoff window, so that the WIFI system and the LAA system can compete for channel resources fairly after the channel conflicts.
  • FIG. 6 is a flowchart of a method for adjusting a backoff window according to Embodiment 6 of the present invention.
  • the second information is the response information sent by the UE.
  • the method provided in this embodiment may include the following steps. :
  • Step 601 The base station receives at least one response message sent by at least one UE.
  • Step 602 The base station obtains retransmission times information of the ARQ and/or HARQ of the first UE according to the response information sent by the first UE in the at least one UE.
  • the number of retransmissions of the ARQ and/or HARQ of the first UE is the first information.
  • Step 603 The base station adjusts a backoff window of the base station on the first channel according to the ARQ of the first UE and/or the number of retransmissions of the HARQ.
  • the base station adjusts the backoff window of the base station on the first channel according to the ARQ of the first UE and/or the number of retransmissions of the HARQ, including at least one of the following steps:
  • the base station increases the backoff window of the base station on the first channel.
  • the base station reduces the backoff window of the base station on the first channel, or the base station maintains the backoff window of the base station on the first channel. constant.
  • the base station receives the at least one response information sent by the at least one UE, and obtains the retransmission times information of the ARQ and/or the HARQ of the first UE according to the response information sent by the first UE in the at least one UE, according to the first UE.
  • the number of retransmissions of the ARQ and/or HARQ adjusts the length of the backoff window of the base station on the first channel.
  • FIG. 7 is a flowchart of a method for adjusting a backoff window according to Embodiment 7 of the present invention.
  • a base station obtains first information according to a CCA result of a first channel, as shown in FIG.
  • the method provided can include the following steps:
  • Step 701 The base station performs CCA detection on the first channel, and acquires idle time information on the first channel and a total CCA detection time of the first channel.
  • the base station detects whether the first channel is idle during each detection time, and obtains the idle condition of the first channel in each detection time.
  • Step 702 The base station obtains a seventeenth value according to a ratio of an idle time of the first channel to a total time of the CCA detection of the first channel, where the seventeenth value is the first information.
  • the base station determines the idle time of the first channel according to the CCA detection, and takes the ratio of the idle time of the first channel to the total time of the CCA detection of the first channel as the seventeenth value.
  • the base station finds a continuous idle time from all idle times according to the idle time information of the first channel, where the continuous idle time refers to a time when one or more adjacent detection times are idle. There may be multiple consecutive idle times in the total time of CCA detection, and the base station is from multiple consecutive idle times.
  • the maximum value is determined, and the ratio of the maximum value to the total time of the CCA detection is taken as the seventeenth value.
  • the total time of CCA detection is 500us.
  • the first continuous idle time is 60us, and the second continuous idle time is 100us.
  • the base station uses the second continuous idle time and CCA. The ratio of the total time is detected as the seventeenth value.
  • Step 703 The base station adjusts a backoff window of the base station on the first channel according to the calculated seventeenth value.
  • the base station adjusts the length of the backoff window of the base station on the first channel according to the calculated seventeenth value, and includes at least one of the following steps:
  • the base station increases the backoff window of the base station on the first channel; if the seventeenth value is greater than the preset twentieth threshold, the base station decreases the base station at the first A backoff window on the channel, or the base station keeps the backoff window of the base station on the first channel unchanged.
  • the value range of the seventeenth value is greater than or equal to 0 and less than or equal to 1, and the range of the nineteenth threshold and the twentieth threshold is greater than 0 and less than 1.
  • the base station performs CCA detection on the first channel, and acquires idle time information on the first channel, and the base station adjusts the backoff window of the base station on the first channel only according to the length of the idle time. Includes at least one of the following steps:
  • the base station increases the backoff window of the base station on the first channel; if the idle time length is greater than the preset another time length, the base station reduces the backoff of the base station on the first channel. The window, or the base station keeps the base station's backoff window on the first channel unchanged.
  • the base station performs CCA detection on the first channel, and acquires idle time information of the first channel and a total CCA detection time of the first channel, according to the idle time information of the first channel and the total time of the CCA detection of the first channel.
  • the ratio adjusts the length of the backoff window of the base station on the first channel.
  • FIG. 8 is a flowchart of a method for adjusting a backoff window according to Embodiment 8 of the present invention.
  • a base station obtains first information according to a CCA result on a first channel as an example, as shown in FIG.
  • the method provided by the example may include the following steps:
  • Step 801 The base station performs CCA detection on the first channel in units of CCA slots, and obtains The number of idle CCA slots of the first channel is taken, where the CCA slot is a predefined length of time.
  • the backoff window length of the base station on the first channel includes a total of M CCA slots.
  • the base station Before performing the backoff procedure, the base station first needs to generate a random number N between 0 and M, and then detect the M CCA slots.
  • the idle condition of the first channel acquires the number of idle CCA slots of the first channel.
  • Step 802 The base station adjusts, according to the number of idle CCA slots of the first channel, the length of the backoff window of the base station on the first channel.
  • the base station detects one idle CCA slot on the first channel, that is, subtracts 1 from the generated random number N, and when the random number N is reduced to 0, the base station can transmit data. In this process, the base station determines whether at least N idle CCA slots have been detected on the M CCA slots of the first channel.
  • the at least N idle CCA slots may be discontinuous or continuous.
  • the base station adjusts the length of the backoff window of the base station on the first channel according to the number of idle CCA slots of the first channel, and includes at least one of the following steps:
  • the base station If the base station does not detect N idle CCA slots within the length of the M CCA slots on the first channel, the base station increases the backoff window of the base station on the first channel.
  • the base station If the base station detects at least N idle CCA slots within the length of the M CCA slots on the first channel, the base station reduces the backoff window of the base station on the first channel, or the base station keeps the base station in the first channel The backoff window on the same remains unchanged.
  • the base station performs CCA detection on the first channel in units of CCA slots, acquires the number of idle CCA slots of the first channel, and adjusts the base station according to the number of idle CCA slots of the first channel.
  • a backoff window on one channel When the LAA system and the WIFI system coexist, both the LAA system and the WIFI system adjust their own backoff window, so that the WIFI system and the LAA system can compete for channel resources fairly after the channel conflicts.
  • FIG. 9 is a flowchart of a method for adjusting a backoff window according to Embodiment 9 of the present invention.
  • a trigger condition for a base station to obtain a backoff window length adjustment on a first channel according to a system conflict detection result on a first channel is used as an example.
  • the method provided in this embodiment may include the following steps:
  • Step 901 The base station detects the WIFI system or the LAA system or other system on the first channel.
  • the signal obtains information about whether the base station conflicts with the WI-FI system or the LAA system or other systems on the first channel.
  • the base station detects the signal of the WIFI system or the LAA system or other system on the first channel, it indicates that the base station conflicts with the WI-FI system or the LAA system or other systems on the first channel, if the base station does not detect on the first channel Signals to the WIFI system or the LAA system or other systems indicate that the base station does not collide with the WI-FI system or the LAA system or other systems on the first channel.
  • Step 902 The base station adjusts a backoff window of the base station on the first channel according to whether the base station and the WI-FI system or the LAA system or other systems collide on the first channel.
  • the base station increases the backoff window of the base station on the first channel.
  • the base station reduces the backoff window of the base station on the first channel, or the base station keeps the base station in the first channel.
  • the backoff window on the same remains unchanged.
  • the base station detects signals of the WIFI system or the LAA system or other systems on the first channel, and obtains information about whether the base station conflicts with the WI-FI system or the LAA system or other systems on the first channel, according to the obtained base station and Whether the WI-FI system or the LAA system or other system conflicts on the first channel adjusts the length of the backoff window of the base station on the first channel.
  • both the LAA system and the WIFI system adjust their own backoff window, so that the WIFI system and the LAA system can compete for channel resources fairly after the channel conflicts.
  • the base station can adjust the length of the backoff window of the base station on the first channel by using the methods in the foregoing Embodiments 1 to 9.
  • the base station can also adjust the following manner: the base station determines whether the length of the backoff window of the base station on the first channel reaches the maximum. Length, and whether to maintain P times after reaching the maximum length, if the length of the backoff window of the base station on the first channel reaches the maximum length and remains P times, the base station reduces the backoff window of the base station on the first channel, where P Is an integer not less than 0.
  • the base station can adjust the length of the backoff window of the base station on the first channel, the base station can also be adjusted in the following manner: when the base station grabs the third time in the history. When the data transmission opportunity is occupied, the base station increases the backoff window of the base station on the first channel, so that the device that shares the unlicensed spectrum resource in the neighboring cell obtains more access opportunities to show the adjacent coexistence system (such as Friendly for Wi-Fi devices or other LAA devices).
  • the third time may be a length of time of a semi-static configuration.
  • the base station when the base station receives the at least one response information sent by the at least one UE and the conflict information sent by the at least one UE, the first information obtained by the base station according to the method described in Embodiment 2 and Embodiment 9 includes an equivalent response. Information and equivalent conflict information.
  • the base station adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the base station increases a backoff window of the base station on the first channel
  • the base station reduces the length of the backoff window of the base station on the first channel, or the base station keeps the backoff window of the base station on the first channel. change.
  • FIG. 10 is a flowchart of a method for adjusting a backoff window according to Embodiment 10 of the present invention. As shown in FIG. 10, the method provided in this embodiment may include the following steps:
  • Step 1001 The UE acquires first information for indicating to adjust a backoff window on the first channel.
  • the UE acquires first information for indicating that the backoff window on the first channel is adjusted, and may include at least one of the following steps:
  • the UE acquires the first information according to the second information sent by the base station;
  • the UE acquires the first information according to the CCA result on the first channel;
  • the UE acquires the first information according to the system conflict detection result on the first channel;
  • the UE acquires the first information according to whether the length of the backoff window on the first channel reaches a maximum length.
  • the second information sent by the base station may be: response information or backoff window adjustment indication information.
  • the response information includes ACK information and/or NACK information.
  • the backoff window adjustment indication information is used to indicate whether the UE adjusts the backoff window length. Therefore, the first information may be: equivalent response information or backoff window adjustment indication information, and the equivalent response information is equivalent ACK information or the like.
  • the effect NACK information, the back-off window adjustment indication information indicates the back-off window adjustment or no adjustment.
  • Step 1002 The UE adjusts a backoff window of the UE on the first channel according to the first information.
  • the UE adjusts the backoff window of the UE on the first channel, where the UE increases the length of the backoff window of the UE on the first channel, or the UE reduces the backoff of the UE on the first channel.
  • the length of the window, or the UE keeps the length of the backoff window of the UE on the first channel unchanged.
  • the UE may specifically increase the length of the backoff window by increasing the backoff window in an exponential manner; or, the UE increases the backoff window in a linear growth manner; or The UE selects a larger length in the set of lengths of the predefined backoff window; or, the UE increases the backoff window to the maximum length, or the UE increases the backoff window in other manners.
  • the UE may specifically reduce the backoff window by: the UE reduces the backoff window in an exponentially decaying manner; or, the UE decreases the backoff window in a linear manner; or, the UE selects one of the predefined set of backoff windows Small length; alternatively, the UE rolls back the length of the backoff window to an initial value, or the UE otherwise reduces the backoff window.
  • the UE adjusts the length of the backoff window of the UE on the first channel according to the first information by acquiring first information for indicating that the backoff window on the first channel is adjusted.
  • both the LAA system and the WIFI system adjust their own backoff window, so that the WIFI system and the LAA system can compete for channel resources fairly after the channel conflicts.
  • the second information is response information sent by the UE.
  • the method provided in this embodiment may include the following. step:
  • Step 1101 The UE receives at least one response information sent by the base station.
  • the at least one response message is at least one feedback information of the data packet transmitted by the base station to the first channel, wherein each of the at least one response information is ACK information or NACK information.
  • Step 1102 The UE acquires the first information according to the at least one response information.
  • Step 1103 The UE adjusts a backoff window of the UE on the first channel according to the first information.
  • it may include at least one of the following steps:
  • the UE increases the UE's backoff window on the first channel.
  • At least one ACK message includes at least one ACK information
  • the UE reduces the UE's backoff window on the first channel, or the UE keeps the UE's backoff window on the first channel unchanged.
  • the UE receives at least one response information sent by the base station, acquires the first information according to the received at least one response information, and adjusts the length of the backoff window of the UE on the first channel according to the first information.
  • both the LAA system and the WIFI system adjust their own backoff window, so that the WIFI system and the LAA system can compete for channel resources fairly after the channel conflicts.
  • FIG. 12 is a flowchart of a method for adjusting a backoff window according to Embodiment 12 of the present invention.
  • the UE obtains the first information according to the CCA result of the first channel as an example.
  • the implementation is as shown in FIG.
  • the method provided by the example may include the following steps:
  • Step 1201 The UE performs CCA detection on the first channel, and acquires idle time information on the first channel and a total CCA detection time of the first channel.
  • Step 1202 The UE obtains an eighteenth value according to a ratio of an idle time of the first channel to a total time of the CCA detection of the first channel, where the eighteenth value is the first information.
  • step 1201 and the step 1202 For the specific implementation of the step 1201 and the step 1202, reference may be made to the related description of the seventh embodiment, and details are not described herein again.
  • the difference between the embodiment and the seventh embodiment is that the execution bodies of the two embodiments are different.
  • Step 1203 The UE adjusts a length of the backoff window of the UE on the first channel according to the first information.
  • the UE increases the backoff window of the UE on the first channel.
  • the UE reduces the UE's backoff window on the first channel, or the UE keeps the UE's backoff window on the first channel unchanged.
  • the UE performs CCA detection on the first channel, and acquires idle time information of the first channel and a total CCA detection time of the first channel, according to idle time information of the first channel.
  • the ratio of the total time of the CCA detection of the first channel obtains the first information, and the length of the backoff window of the UE on the first channel is adjusted according to the first information.
  • FIG. 13 is a flowchart of a method for adjusting a backoff window according to Embodiment 13 of the present invention.
  • the UE obtains the first information according to the CCA result on the first channel as an example, as shown in FIG.
  • the method provided by the embodiment may include the following steps:
  • Step 1301 The UE performs CCA detection on the first channel in units of CCA slots to obtain the number of idle CCA slots of the first channel, where the CCA slot is a predefined length of time.
  • Step 1302 The UE adjusts a backoff window of the UE on the first channel according to the number of idle CCA slots of the first channel.
  • it may include at least one of the following steps:
  • the UE If the UE does not detect N idle CCA slots within the length of the M CCA slots on the first channel, the UE increases the UE's backoff window on the first channel.
  • the UE If the UE detects N idle CCA slots within the length of the M CCA slots on the first channel, the UE reduces the UE's backoff window on the first channel, or the UE keeps the UE on the first channel.
  • the backoff window is unchanged; wherein the length of the M CCA slots is the length of the backoff window of the current UE on the first channel, and N is the random number between 0 and M randomly generated by the UE.
  • the UE performs CCA detection on the first channel in units of CCA slots, acquires the number of idle CCA slots of the first channel, and adjusts the UE according to the number of idle CCA slots of the first channel.
  • Embodiment 14 is a flowchart of a method for adjusting a backoff window according to Embodiment 14 of the present invention.
  • the UE obtains the first information according to the system conflict detection result on the first channel, as shown in FIG.
  • the method provided in this embodiment may include the following steps:
  • Step 1401 The UE detects signals of the WI-FI system or the LAA system or other systems on the first channel, and obtains information about whether the UE conflicts with the WI-FI system or the LAA system or other systems on the first channel.
  • the UE detects a signal of the WI-FI system or the LAA system or other system on the first channel, the UE determines that the UE collides with the WI-FI system or the LAA system or other system on the first channel, if the UE is in the first channel. The UE does not detect the signal of the WI-FI system or the LAA system or other systems, and the UE determines that the UE does not collide with the WI-FI system or the LAA system or other systems on the first channel.
  • Step 1402 The UE adjusts a backoff window of the UE on the first channel according to whether the UE conflicts with the WI-FI system or the LAA system or other systems on the first channel.
  • it may include at least one of the following steps:
  • the UE increases the backoff window of the UE on the first channel.
  • the UE reduces the backoff window of the UE on the first channel, or the UE keeps the UE in the first channel.
  • the backoff window on the same remains unchanged.
  • the UE detects the signal of the WIFI system or other LAA system on the first channel, indicating that the first channel is interfered by the signal of the WIFI system or other LAA system, and at this time, the UE increases the UE in the first channel.
  • the backoff window on the network can prevent the uplink data sent by the UE from being interfered.
  • the UE detects the signal of the WI-FI system or the LAA system or other system on the first channel, and obtains information about whether the UE conflicts with the WI-FI system or the LAA system or other systems on the first channel, according to the UE.
  • the information on whether the WI-FI system or the LAA system or other system collides on the first channel adjusts the UE's backoff window on the first channel.
  • both the LAA system and the WIFI system adjust their own backoff window, so that the WIFI system and the LAA system can compete for channel resources fairly after the channel conflicts.
  • the UE can adjust the length of the backoff window of the UE on the first channel by using the methods in the foregoing tenth to fourteenth embodiments.
  • the UE can also adjust the following manner: the UE determines whether the length of the backoff window of the UE on the first channel is After reaching the maximum length and after reaching the maximum length If the length of the backoff window of the UE on the first channel reaches the maximum length and remains P times, the UE reduces the backoff window of the UE on the first channel, where P is an integer not less than 0.
  • FIG. 15 is a schematic structural diagram of a base station according to Embodiment 15 of the present invention.
  • the base station provided in this embodiment includes: an obtaining module 11 and an adjusting module 12.
  • the obtaining module 11 is configured to acquire first information for indicating to adjust a backoff window on the first channel;
  • the adjusting module 12 is configured to adjust the backoff window according to the first information
  • the acquiring the first information by the acquiring module 11 includes at least one of the following steps:
  • the first information is obtained according to whether the length of the backoff window on the first channel reaches a maximum length.
  • the base station provided in this embodiment may be used to perform the method in the first embodiment.
  • the specific implementation manners and technical effects are similar, and details are not described herein again.
  • FIG. 16 is a schematic structural diagram of a base station according to Embodiment 16 of the present invention.
  • the base station provided in this embodiment further includes: a receiving module 13 in the embodiment shown in FIG.
  • the second information is the response information.
  • the receiving module 13 is configured to receive at least one response information that is sent by the at least one UE, where the at least one response information is response information that is sent by the at least one UE to the at least one data packet that is transmitted on the first channel, where Wherein each of the at least one response information is ACK information or NACK information;
  • the acquiring, by the acquiring module, the first information, according to the second information sent by the at least one UE, includes: acquiring the first information according to the at least one response information sent by the at least one UE.
  • the adjusting module 12 adjusts the backoff window according to the first information, and includes at least one of the following steps: if the first information is equivalent NACK information, increasing the base station on the first channel Treatment window; if the first information is equivalent ACK information, then decrease The base station is in a backoff window on the first channel, or keeps the backoff window of the base station on the first channel unchanged.
  • the acquiring module 11 acquires the first information according to the at least one response information sent by the at least one UE, and may include at least one of the following steps:
  • the first information is equivalent ACK information.
  • the first information is equivalent NACK information.
  • the third value is greater than a preset third threshold, the first information is an equivalent ACK message.
  • the fourth value is greater than a preset fourth threshold, the first information is equivalent NACK information.
  • the base station provided in this embodiment may be used to perform the method in the second embodiment, and the specific implementation manners and technical effects are similar, and details are not described herein again.
  • the seventh embodiment of the present invention provides a base station.
  • the structure of the base station provided in this embodiment is the same as that of the base station shown in FIG. 16.
  • the receiving module 13 is configured to receive the at least one UE. Transmitting at least one response information, the at least one response information being response information of the at least one data packet transmitted by the at least one UE corresponding to the first channel, wherein each of the at least one response information is ACK information or NACK information;
  • the acquiring module 11 acquiring the first information of the first UE according to the at least one response information sent by the first UE in the at least one UE Information, the first UE is any one of the at least one UE.
  • the adjusting module 12 adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the first information of the first UE is equivalent NACK information, increase the base station in the a backoff window for scheduling the first UE on the first channel, or maintaining the backoff window of the base station for scheduling the first UE on the first channel unchanged and not in the first time Scheduling the first UE.
  • the base station reduces, by the base station, a backoff window for scheduling the first UE on the first channel, or maintaining the base station in the The backoff window for scheduling the first UE on the first channel is unchanged.
  • the acquiring module 11 acquires the first information of the first UE according to the at least one response information sent by the first UE in the at least one UE, and includes at least one of the following steps:
  • the seventh value is greater than a preset seventh threshold, the first information of the first UE is Equivalent ACK information.
  • the eighth value is greater than a preset eighth threshold, the first information of the first UE is Equivalent NACK information.
  • the base station provided in this embodiment may be used to perform the method in the third embodiment, and the specific implementation manners and technical effects are similar, and details are not described herein again.
  • the embodiment of the present invention provides a base station.
  • the structure of the base station provided in this embodiment is the same as that of the base station shown in FIG. 16.
  • the second information is response information and a precoding matrix.
  • the receiving module 13 is configured to receive the at least one response information and the at least one PMI information that are sent by the at least one UE, where the at least one response information is sent by the at least one UE to be transmitted on the corresponding first channel.
  • a packet response message Each of the at least one response information is ACK information or NACK information, and the at least one PMI information is used to indicate at least one PMI indication direction.
  • the acquiring module Obtaining, by the acquiring module, the first information according to the second information sent by the at least one user equipment UE, including: at least one of the first PMI indication directions in the at least one PMI direction indicated by the at least one PMI information
  • the response information acquires first information of the first PMI indication direction, and the first PMI indication direction is any PMI indication direction of the at least one PMI indication direction.
  • the adjusting module 12 adjusts the backoff window according to the first information, and includes at least one of the following steps:
  • the first information of the first PMI indication direction is the equivalent NACK information, increase the backoff window used by the base station to schedule the UE in the first PMI indication direction on the first channel, or Maintaining, by the base station, a backoff window for scheduling the UE in the first PMI indication direction on the first channel, and not scheduling the UE in the first PMI indication direction in a second time;
  • the first information of the first PMI indication direction is the equivalent ACK information, reducing, by the base station, the backoff window for scheduling the UE in the first PMI indication direction on the first channel, or And maintaining, by the base station, a backoff window for scheduling the UE in the first PMI indication direction on the first channel.
  • the acquiring module 11 acquires the first information of the first PMI indication direction according to the at least one response information in the first PMI indication direction in the at least one PMI direction indicated by the at least one PMI information, including the following steps. At least one of:
  • the number of the first value is the eleventh value, and if the eleventh value is greater than the preset eleventh threshold, the first information indicating the direction of the first PMI is equivalent ACK information;
  • the first information in the indication direction is equivalent NACK information.
  • the base station provided in this embodiment may be used to perform the method in the fourth embodiment, and the specific implementation manners and technical effects are similar, and details are not described herein again.
  • the embodiment of the present invention provides a base station.
  • the structure of the base station provided in this embodiment is the same as that of the base station shown in FIG. 16.
  • the second information is conflict information
  • the receiving module 13 configured to receive at least one conflict information sent by the at least one UE, where the conflict information is used to indicate whether the base station conflicts with the WI-FI system or the LAA system or other systems on the first channel.
  • the acquiring module 11 includes: acquiring the first information according to the at least one conflict information sent by the at least one UE.
  • the adjusting module 12 adjusts the backoff window according to the first information, and includes at least one of the following steps: if the first information is an equivalent conflict, increasing the base station on the first channel a backoff window; if the first information is equivalent non-collision, reducing a backoff window of the base station on the first channel, or maintaining a backoff window of the base station on the first channel .
  • the acquiring module 11 acquires the first information according to the at least one conflict information sent by the at least one UE, and includes at least one of the following steps:
  • the first information is an equivalent conflict
  • the base station provided in this embodiment may be used to perform the method in the fifth embodiment, and the specific implementation manners and technical effects are similar, and details are not described herein again.
  • the embodiment of the present invention provides a base station.
  • the structure of the base station provided in this embodiment is the same as that of the base station shown in FIG. 16.
  • the second information is response information
  • the receiving module 13 is provided. Receiving, by the at least one UE, at least one response information, where the at least one response information is response information of the at least one data packet transmitted by the at least one UE corresponding to the first channel, where the at least one Each response message in the response message is an ACK message or a NACK message;
  • the obtaining module 11 obtaining, according to the response information sent by the first UE in the at least one UE, the ARQ of the first UE and/or The number of retransmissions of the HARQ, the number of retransmissions of the ARQ and/or HARQ of the first UE is the first information;
  • the adjusting module 12 adjusts the backoff window according to the first information, and includes at least one of the following steps: if the number of retransmissions of the ARQ and/or HARQ of the first UE is greater than a preset seventeenth threshold, And increasing a backoff window of the base station on the first channel; if the number of retransmissions of the ARQ and/or HARQ of the first UE is less than a preset eighteenth threshold, reducing the base station in the The backoff window on the first channel is described, or the backoff window of the base station on the first channel is kept unchanged.
  • the base station provided in this embodiment may be used to perform the method in the sixth embodiment, and the specific implementation manners and technical effects are similar, and details are not described herein again.
  • a twenty-first embodiment of the present invention provides a base station.
  • the structure of the base station provided in this embodiment is the same as that of the base station shown in FIG. 15.
  • the acquiring module 11 is configured according to the first channel.
  • Obtaining the first information by the CCA result including: performing CCA detection on the first channel, acquiring idle time information on the first channel, and a total CCA detection time of the first channel; according to the first channel
  • the ratio of the idle time to the total time of the CCA detection of the first channel results in a seventeenth value, the seventeenth value being the first information.
  • the adjusting module 12 adjusts the backoff window according to the first information, and includes at least one of the following steps: if the seventeenth value is less than a preset nineteenth threshold, increasing the base station in the a backoff window on the first channel; if the seventeenth value is greater than a preset twentieth threshold, reducing a backoff window of the base station on the first channel, or maintaining the base station in the The backoff window on the first channel does not change.
  • the base station provided in this embodiment may be used to perform the method in the seventh embodiment, and the specific implementation manners and technical effects are similar, and details are not described herein again.
  • the embodiment of the present invention provides a base station.
  • the structure of the base station provided in this embodiment is the same as that of the base station shown in FIG. 15.
  • the acquiring module 11 is configured according to the first channel.
  • the CCA result obtains the first information, including: performing CCA detection on the first channel in units of CCA slots, and acquiring information about the number of idle CCA slots of the first channel, where the CCA slot is pre- The defined length of time, the number of idle CCA slots of the first channel is the first information.
  • the adjusting module 12 adjusts the backoff window according to the first information, including at least one of the following steps: if no N idle CCAs are detected within a time length of M CCA slots on the first channel The time slot increases the backoff window of the base station on the first channel; if at least N idle CCA time slots are detected within the time length of the M CCA time slots on the first channel, The base station is in a backoff window on the first channel, or keeps the backoff window of the base station on the first channel unchanged; wherein, the length of time of the M CCA slots is the base station The backoff window length of the current time on the first channel, N is a random number between 0 and M randomly generated by the base station before performing CCA detection.
  • the base station provided in this embodiment may be used to perform the method in the eighth embodiment.
  • the specific implementation manners and technical effects are similar, and details are not described herein again.
  • a thirteenth embodiment of the present invention provides a base station.
  • the structure of the base station provided in this embodiment is the same as that of the base station shown in FIG. 15.
  • the acquiring module 11 is configured according to the first channel.
  • Obtaining the first information by the system conflict detection result comprising: detecting a signal of the WI-FI system or the LAA system or other system on the first channel, obtaining the base station and the WI-FI system or the LAA system or other systems in the Whether the information on the first channel conflicts, whether the base station conflicts with the WI-FI system or the LAA system or other system on the first channel is the first information.
  • the adjusting module 12 adjusts the backoff window according to the first information, and includes at least one of the following steps: if the first information indicates that the system conflicts, increasing the backoff of the base station on the first channel a window; if the first information indicates that the system does not conflict, reducing a backoff window of the base station on the first channel, or keeping a backoff window of the base station on the first channel unchanged.
  • the base station provided in this embodiment may be used to perform the method in the ninth embodiment.
  • the specific implementation manners and technical effects are similar, and details are not described herein again.
  • the acquiring module 11 acquires the first information according to whether the length of the backoff window on the first channel reaches a maximum length, and includes: determining a backoff window of the base station on the first channel.
  • the length of the retreat window is adjusted according to the first information, and the adjustment module 12 adjusts the backoff window according to the first information, if the length of the backoff window of the base station on the first channel reaches the maximum length and remains P times, the backoff window of the base station on the first channel is reduced, where P is an integer not less than 0.
  • FIG. 17 is a schematic structural diagram of a UE according to Embodiment 24 of the present invention. As shown in FIG. 17, the UE provided in this embodiment includes: an obtaining module 21 and an adjusting module 22.
  • the obtaining module 21 is configured to obtain first information for indicating that the backoff window on the first channel is adjusted, where the obtaining, by the acquiring module, the first information includes at least one of the following steps:
  • the adjusting module 22 is configured to adjust a backoff window of the UE on the first channel according to the first information.
  • the UE provided in this embodiment may be used to perform the method in the tenth embodiment.
  • the specific implementation manners and technical effects are similar, and details are not described herein again.
  • FIG. 18 is a schematic structural diagram of a UE according to a twenty-fifth embodiment of the present invention.
  • the second information is response information.
  • the UE provided in this embodiment is shown in FIG.
  • the structure of the UE further includes: a receiving module 23.
  • the receiving module 23 is configured to receive at least one response information sent by the base station, where the at least one response information is response information of the at least one data packet that is sent by the base station to the first channel, where the at least one response information is Each response message is a positive acknowledgement ACK message or a negative acknowledgement NACK message.
  • the obtaining, by the acquiring module 21, the first information according to the second information sent by the base station, includes: acquiring the first information according to the at least one response information.
  • the adjusting module 22 adjusts the backoff window of the UE on the first channel according to the first information, and includes at least one of the following steps: if the first information includes at least one NACK information, increase a backoff window of the UE on the first channel; if the first information includes at least one ACK information, reducing a backoff window of the UE on the first channel, or the UE remains The backoff window of the UE on the first channel does not change.
  • the UE provided in this embodiment may be used to perform the method in the eleventh embodiment.
  • the specific implementation manners and technical effects are similar, and details are not described herein again.
  • the twenty-sixth embodiment of the present invention provides a UE.
  • the structure of the UE provided in this embodiment is the same as that of the UE shown in FIG. 17.
  • the obtaining module 21 is configured according to the foregoing.
  • Obtaining the first information by the CCA result on a channel including: performing CCA detection on the first channel, acquiring idle time information of the first channel, and a total CCA detection time of the first channel;
  • the ratio of the idle time of the first channel to the total time of the CCA detection of the first channel is the eighteenth value, and the eighteenth value is the first information.
  • the adjusting module 22 adjusts the backoff window of the UE on the first channel according to the first information, and includes at least one of the following steps: if the eighteenth value is smaller than a preset second eleventh threshold And increasing a backoff window of the UE on the first channel; if the eighteenth value is greater than a preset second threshold, reducing the backoff of the UE on the first channel The window, or, keeps the backoff window of the UE on the first channel unchanged.
  • the UE provided in this embodiment may be used to perform the method in the twelfth embodiment.
  • the specific implementation manners and technical effects are similar, and details are not described herein again.
  • a twenty-seventh embodiment of the present invention provides a UE.
  • the structure of the UE provided in this embodiment is the same as that of the UE shown in FIG. 17.
  • the acquiring module 21 is configured according to the foregoing.
  • the CCA result on a channel acquires the first information, including: in the first channel Performing CCA detection in units of CCA slots to obtain the number of idle CCA slots of the first channel, where the CCA slot is a predefined length of time, and the idle CCA slot of the first channel
  • the number information is the first information.
  • the adjusting module 22 adjusts the backoff window of the UE on the first channel according to the first information, and includes at least one of the following steps: if the UE is in the M CCAs on the first channel If no N idle CCA slots are detected within the time length of the slot, the backoff window of the UE on the first channel is increased; if the UE is in the M CCA slots on the first channel Detecting N idle CCA slots in the length of time, reducing the backoff window of the UE on the first channel, or keeping the UE's backoff window on the first channel unchanged;
  • the length of the CCA slot is the length of the backoff window of the current UE on the first channel, and N is the random number between 0 and M randomly generated by the UE before the CCA detection.
  • the UE provided in this embodiment may be used to perform the method in the thirteenth embodiment.
  • the specific implementation manners and technical effects are similar, and details are not described herein again.
  • the embodiment of the present invention provides a UE.
  • the structure of the UE provided in this embodiment is the same as that of the UE shown in FIG. 17.
  • the acquiring module 21 is configured according to the foregoing. Obtaining the first information by the system conflict detection result on a channel, comprising: detecting a signal of the WI-FI system or the LAA system or other system on the first channel, obtaining the UE and the WI-FI system or the LAA system or other Whether the system collides with information on the first channel, and whether the information of the UE conflicts with the WI-FI system or the LAA system or other system on the first channel is the first information.
  • the adjusting module 22 adjusts the backoff window of the UE on the first channel according to the first information, and includes at least one of the following steps: if the first information indicates that the system conflicts, the UE is increased. a backoff window on the first channel; if the first information indicates that the system does not conflict, reducing a backoff window of the UE on the first channel, or keeping the UE at the first The backoff window on the channel does not change.
  • the UE provided in this embodiment may be used to perform the method in the fourteenth embodiment.
  • the specific implementation manners and technical effects are similar, and details are not described herein again.
  • the obtaining module 21 acquires the first information according to whether the length of the backoff window on the first channel reaches a maximum length, including: determining that the UE is in the The length of the backoff window on the first channel reaches the maximum length; the adjusting module 22 adjusts the backoff window according to the first information, including: if the UE is in the backoff window on the first channel When the length reaches the maximum length and is maintained P times, the backoff window of the UE on the first channel is reduced, where P is an integer not less than 0.
  • FIG. 19 is a schematic structural diagram of a base station according to Embodiment 29 of the present invention.
  • the base station 300 provided in this embodiment includes: a processor 31, a memory 32, a communication interface 33, and a system bus 34.
  • 32 and the communication interface 33 are connected to the processor 31 through the system bus 34 and complete communication with each other, the memory 32 for storing computer execution instructions; the communication interface 33 is for performing with other devices
  • the processor 31 is configured to execute the computer to execute the instructions, and the method of the first embodiment to the ninth embodiment is performed.
  • the specific implementation manner and the technical effects are similar, and details are not described herein again.
  • FIG. 20 is a schematic structural diagram of a UE according to Embodiment 30 of the present invention.
  • the UE 400 provided in this embodiment includes: a processor 41, a memory 42, a communication interface 43, and a system bus 44, and the memory 42 and The communication interface 43 is connected to the processor 41 through the system bus 44 and completes communication with each other, the memory 42 is configured to store computer execution instructions; the communication interface 43 is configured to communicate with other devices; The processor 41 is configured to execute the computer to execute the instructions, and the method of the tenth embodiment to the fourteenth embodiment is performed.
  • the specific implementation manner and the technical effects are similar, and details are not described herein again.
  • the foregoing program may be stored in a computer readable storage medium, and the program is executed when executed.
  • the foregoing steps include the steps of the foregoing method embodiments; and the foregoing storage medium includes: a medium that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明实施例提供一种退避窗口的调整方法和装置,在下行传输中,基站获取第一信道上的退避窗口长度调整的触发条件,根据获取的第一信道上的退避窗口长度调整的触发条件,调整基站在第一信道上的退避窗口的长度。在上行传输中,UE获取第一信道上的退避窗口长度调整的触发条件,根据获取的第一信道上的退避窗口长度调整的触发条件,调整UE在第一信道上的退避窗口的长度。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。

Description

一种退避窗口的调整方法和装置 技术领域
本发明实施例涉及通信技术,尤其涉及一种退避窗口的调整方法和装置。
背景技术
在现有的无线通信领域,频谱资源主要分为两种,一种为许可频谱(licensed spectrum)资源,另一种为免许可频谱(unlicensed spectrum)资源。许可频谱资源是由政府的无线电管理委员会划定,有专用用途的频谱资源,例如移动运营商使用、民航、铁路、警察专用的频谱资源,由于在政策上的排他性,许可频谱资源的业务质量一般可以得到保证,在进行调度控制时也相对容易。
免许可频谱资源也是由政府相关部门划定的频谱资源,但不对无线电技术、运营企业和使用年限进行限定,同时也不保证该频段的业务质量。应用免许可频谱资源的通信设备只需要满足发射功率、带外泄露等指标的要求,即可免费使用。常见的应用免许可频谱资源进行通信的通信系统包括民用对讲机、无线电遥控器、无线保真(Wireless Fidelity,简称Wi-Fi)通信系统、蓝牙通信系统等。
在现有的长期演进(Long Term Evolution,简称LTE)系统中,运营商所使用的频谱资源主要为许可频谱资源;随着移动通信网络用户数量的增加,以及用户对通信速率、服务质量的要求的提高,现有的许可频谱资源已经难以满足运营商的现有业务的需求。考虑到新的许可频谱价格高昂、资源紧缺,运营商开始将目光投向免许可频谱资源上,期望能够通过利用免许可频谱资源以达到网络容量分流、提高服务质量的目的。许可辅助接入长期演进(Licensed-Assisted Access Using LTE,简称LAA-LTE)系统,或者免许可长期演进(Unlicensed Long Term Evolution,简称U-LTE)系统,即研究LTE系统应用免许可频谱资源进行通信的问题。
为了保证在免许可频谱进行通信的系统和设备的友好共存,在一些国家和地区,例如,欧洲和日本等,引入了先检测后发送(Listen Before Talk,简 称LBT)的信道接入机制。LBT的基本思想为:每个通信设备在某个信道上发送信号之前,需要先检测当前信道是否空闲,即是否可以检测到附近节点正在占用所述信道发送信号,这一检测过程被称为空闲信道评测(Clear Channel Assessment,CCA);如果在一段时间内检测到信道空闲,那么该通信设备就可以发送信号;如果检测到信道被占用,那么该通信设备当前就无法发送信号。具体的,按照欧洲法规的规定,LBT机制又分为基于帧的设备(Frame based equipment,FBE)的LBT机制和基于负载的设备(Load based equipment,LBE)的LBT机制。Wi-Fi系统的信道接入方式是LBE的一种,具体为载波侦听多路访问/冲突避免(Carrier Sense Multiple Access with Collision Avoidance,简称CSMA/CA)机制。法规规定的LBE接入机制,当系统检测冲突时,竞争窗口是一个固定的值,但是Wi-Fi的LBE信道接入机制中,当系统检测冲突,竞争窗口会以指数方式增长,如果LAA系统仅满足法规要求,会导致LAA系统和Wi-Fi系统在竞争信道时,一旦发生资源冲突,LAA可能以更大的概率抢占信道,从而降低Wi-Fi系统接入信道的概率,不能保证公平地和Wi-Fi共存。
发明内容
本发明实施例提供一种退避窗口的调整方法和装置,使得在发生资源冲突时,LAA系统能够灵活调整自己的退避窗口,和WIFI系统公平的使用无线资源。
本发明第一方面提供一种退避窗口的调整方法,包括:
基站获取用于指示调整第一信道上的退避窗口的第一信息;
所述基站根据所述第一信息调整所述退避窗口;
其中,所述基站获取所述第一信息包括下述步骤中的至少一个:
所述基站根据至少一个用户设备UE发送的第二信息获取所述第一信息;
所述基站根据第一信道上的空闲信道评测CCA结果获取所述第一信息;
所述基站根据第一信道上的系统冲突检测结果获取所述第一信息;
所述基站根据第一信道上的退避窗口长度是否达到最大长度获取所 述第一信息。
结合本发明第一方面,在本发明第一方面的第一种可能的实现方式中,所述第二信息为应答信息,所述方法还包括:
所述基站接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
所述基站根据至少一个UE发送的第二信息获取所述第一信息,包括:
所述基站根据所述至少一个UE发送的所述至少一个应答信息获取所述第一信息;
所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第一信息为等效NACK信息,则所述基站增大所述基站在所述第一信道上的退避窗口;
若所述第一信息为等效ACK信息,则所述基站减小所述基站在所述第一信道上的退避窗口,或者,所述基站保持所述基站在所述第一信道上的退避窗口不变。
结合本发明第一方面的第一种可能的实现方式,在本发明第一方面的第二种可能的实现方式中,所述基站根据所述至少一个UE发送的所述至少一个应答信息获取所述第一信息,包括以下步骤中的至少一个:
所述基站根据所述至少一个应答信息中ACK信息所占的个数与所述至少一个应答信息的总个数的比值得到第一数值,若所述第一数值大于预设的第一阈值,则所述第一信息为等效ACK信息;
所述基站根据所述至少一个应答信息中NACK信息所占的个数与所述至少一个应答信息的总个数的比值得到第二数值,若所述第二数值大于预设的第二阈值,则所述第一信息为等效NACK信息;
所述基站根据所述至少一个应答信息中ACK信息所占的个数得到第三数值,若所述第三数值大于预设的第三阈值,则所述第一信息为等效ACK信息;
所述基站根据所述至少一个应答信息中NACK信息所占的个数得到 第四数值,若所述第四数值大于预设的第四阈值,则所述第一信息为等效NACK信息。
结合本发明第一方面,在本发明第一方面的第三种可能的实现方式中,所述第二信息为应答信息,所述方法还包括:
所述基站接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
所述基站根据至少一个UE发送的第二信息获取所述第一信息,包括:
所述基站根据所述至少一个UE中第一UE发送的至少一个应答信息获取所述第一UE的第一信息,所述第一UE为所述至少一个UE中的任一UE;
所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第一UE的第一信息为等效NACK信息,则所述基站增大所述基站在所述第一信道上用于调度所述第一UE的退避窗口,或者,所述基站保持所述基站在所述第一信道上用于调度所述第一UE的退避窗口不变且所述基站在第一时间内不调度所述第一UE;
若所述第一UE的第一信息为等效ACK信息,则所述基站减小所述基站在所述第一信道上用于调度所述第一UE的退避窗口,或者,所述基站保持所述基站在所述第一信道上用于调度所述第一UE的退避窗口不变。
结合本发明第一方面的第三种可能的实现方式,在本发明第一方面的第四种可能的实现方式中,所述基站根据所述至少一个UE中第一UE发送的至少一个应答信息获取所述第一UE的第一信息,包括以下步骤中的至少一个:
所述基站根据所述第一UE发送的至少一个应答信息中ACK信息所占的个数与所述第一UE发送的至少一个应答信息的总个数的比值得到第五数值,若所述第五数值大于预设的第五阈值,则所述第一UE的第一信息为等效ACK信息;
所述基站根据所述第一UE发送的至少一个应答信息中NACK信息所占的个数与所述第一UE发送的至少一个应答信息的总个数的比值得到第六数值,若所述第六数值大于预设的第六阈值,则所述第一UE的第一信息为等效NACK信息;
所述基站根据所述第一UE发送的至少一个应答信息中ACK信息所占的个数得到第七数值,若所述第七数值大于预设的第七阈值,则所述第一UE的第一信息为等效ACK信息;
所述基站根据所述第一UE发送的至少一个应答信息中NACK信息所占的个数得到第八数值,若所述第八数值大于预设的第八阈值,则所述第一UE的第一信息为等效NACK信息。
结合本发明第一方面,在本发明第一方面的第五种可能的实现方式中,所述第二信息为应答信息和预编码矩阵指示PMI信息,所述方法还包括:
所述基站接收所述至少一个UE发送的至少一个应答信息和至少一个PMI信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息,所述至少一个PMI信息用于指示至少一个PMI指示方向;
所述基站根据至少一个UE发送的第二信息获取所述第一信息,包括:
所述基站根据所述至少一个PMI信息所指示的至少一个PMI方向上的第一PMI指示方向上的至少一个应答信息获取所述第一PMI指示方向的第一信息,所述第一PMI指示方向为所述至少一个PMI指示方向中的任一PMI指示方向;
所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第一PMI指示方向的第一信息为等效NACK信息,则所述基站增大所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口,或者,所述基站保持所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口不变且所述基站在第二时间内不调度所述第一PMI指示方向上的UE;
若所述第一PMI指示方向的第一信息为等效ACK信息,则所述基站 减小所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口,或者,所述基站保持所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口不变。
结合本发明第一方面的第五种可能的实现方式,在本发明第一方面的第六种可能的实现方式中,所述基站根据所述至少一个PMI信息所指示的至少一个PMI方向上的第一PMI指示方向上的至少一个应答信息获取所述第一PMI指示方向的第一信息,包括以下步骤中的至少一个:
所述基站根据所述第一PMI指示方向上的至少一个应答信息中ACK信息所占的个数与所述第一PMI指示方向上的至少一个应答信息的总个数的比值得到第九数值,若所述第九数值大于预设的第九阈值,则所述第一PMI指示方向上的第一信息为等效ACK信息;
所述基站根据所述第一PMI指示方向上的至少一个应答信息中NACK信息所占的个数与所述第一PMI指示方向上的至少一个应答信息的总个数的比值得到第十数值,若所述第十数值大于预设的第十阈值,则所述第一PMI指示方向上的第一信息为等效NACK信息;
所述基站根据所述第一PMI指示方向上的至少一个应答信息中ACK信息所占的个数得到第十一数值,若所述第十一数值大于预设的第十一阈值,则所述第一PMI指示方向的第一信息为等效ACK信息;
所述基站根据所述第一PMI指示方向上的至少一个应答信息中NACK信息所占的个数得到第十二数值,若所述第十二数值大于预设的第十二阈值,则所述第一PMI指示方向上第一信息为等效NACK信息。
结合本发明第一方面,在本发明第一方面的第七种可能的实现方式中,所述第二信息为冲突信息,所述方法还包括:
所述基站接收所述至少一个UE发送的至少一个冲突信息,所述冲突信息用于指示所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突;
所述基站根据至少一个UE发送的第二信息获取所述第一信息,包括:
所述基站根据所述至少一个UE发送的所述至少一个冲突信息获取所述第一信息;
所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至 少一个:
若所述第一信息为等效冲突,则所述基站增大所述基站在所述第一信道上的退避窗口;
若所述第一信息为等效不冲突,则所述基站减小所述基站在所述第一信道上的退避窗口,或者,所述基站保持所述基站在所述第一信道上的退避窗口不变。
结合本发明第一方面的第七种可能的实现方式,在本发明第一方面的第八种可能的实现方式中,所述基站根据所述至少一个UE发送的所述至少一个冲突信息获取所述第一信息,包括以下步骤中的至少一个:
所述基站根据所述至少一个冲突信息中指示不冲突信息所占的个数与所述至少一个冲突信息的总个数的比值得到第十三数值,若所述第十三数值大于预设的第十三阈值,则所述第一信息为等效不冲突;
所述基站根据所述至少一个冲突信息中指示冲突信息所占的个数与所述至少一个冲突信息的总个数的比值得到第十四数值,若所述第十四数值大于预设的第十四阈值,则所述第一信息为等效冲突;
所述基站根据所述至少一个冲突信息中指示不冲突信息所占的个数得到第十五数值,若所述第十五数值大于预设的第十五阈值,则所述第一信息为等效不冲突;
所述基站根据所述至少一个冲突信息中指示冲突信息所占的个数得到第十六数值,若所述第十六数值大于预设的第十六阈值,则所述第一信息为等效冲突。
结合本发明第一方面,在本发明第一方面的第九种可能的实现方式中,所述第二信息为应答信息,所述方法还包括:
所述基站接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
所述基站根据至少一个UE发送的第二信息获取所述第一信息,包括:
所述基站根据所述至少一个UE中第一UE发送的应答信息得到所述第一UE的自动重传请求ARQ和/或混合自动重传请求HARQ的重传次数 信息,所述第一UE的ARQ和/或HARQ的重传次数为所述第一信息;
所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第一UE的ARQ和/或HARQ的重传次数大于预设的第十七阈值,则所述基站增大所述基站在所述第一信道上的退避窗口;
若所述第一UE的ARQ和/或HARQ的重传次数小于预设的第十八阈值,则所述基站减小所述基站在所述第一信道上的退避窗口,或者,所述基站保持所述基站在所述第一信道上的退避窗口不变。
结合本发明第一方面,在本发明第一方面的第十种可能的实现方式中,所述基站根据第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
所述基站在第一信道上进行CCA检测,获取所述第一信道上的空闲时间信息和所述第一信道的CCA检测总时间;
所述基站根据所述第一信道的空闲时间与所述第一信道的CCA检测总时间的比值得到第十七数值,所述第十七数值为所述第一信息;
所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第十七数值小于预设的第十九阈值,则所述基站增大所述基站在所述第一信道上的退避窗口;
若所述第十七数值大于预设的第二十阈值,则所述基站减小所述基站在所述第一信道上的退避窗口,或者,所述基站保持所述基站在所述第一信道上的退避窗口不变。
结合本发明第一方面,在本发明第一方面的第十一种可能的实现方式中,所述基站根据第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
所述基站在第一信道上以CCA时隙为单位进行CCA检测,获取所述第一信道的空闲CCA时隙个数信息,其中,所述CCA时隙为预定义的时间长度,所述第一信道的空闲CCA时隙个数信息为所述第一信息;
所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述基站在所述第一信道上的M个CCA时隙的时间长度内没有检测到N个空闲CCA时隙,则所述基站增大所述基站在所述第一信道上的退避窗口;
若所述基站在所述第一信道上的M个CCA时隙的时间长度内检测到至少N个空闲CCA时隙,则所述基站减小所述基站在所述第一信道上的退避窗口,或者,所述基站保持所述基站在所述第一信道上的退避窗口不变;
其中,所述M个CCA时隙的时间长度为所述基站当前时刻在所述第一信道上的退避窗口长度,N为基站在进行CCA检测前随机生成的0到M之间的随机数。
结合本发明第一方面,在本发明第一方面的第十二种可能的实现方式中,所述基站根据第一信道上的系统冲突检测结果获取所述第一信息,包括:
所述基站在第一信道上检测WI-FI系统或LAA系统或其他系统的信号,获得所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息,所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息为所述第一信息;
所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第一信息指示系统冲突,则所述基站增大所述基站在所述第一信道上的退避窗口;
若所述第一信息指示系统不冲突,则所述基站减小所述基站在所述第一信道上的退避窗口,或者,所述基站保持所述基站在所述第一信道上的退避窗口不变。
结合本发明第一方面,在本发明第一方面的第十三种可能的实现方式中,所述基站根据第一信道上的退避窗口长度是否达到最大长度获取所述第一信息,包括:
所述基站确定所述基站在所述第一信道上的退避窗口的长度达到所述最大长度;
所述基站根据所述第一信息调整所述退避窗口,包括:
若所述基站在所述第一信道上的退避窗口的长度达到所述最大长度 并保持P次,则所述基站减小所述基站在所述第一信道上的退避窗口,其中,P为不小于0的整数。
本发明第二方面提供一种退避窗口的调整方法,包括:
用户设备UE获取用于指示调整第一信道上的退避窗口的第一信息;
所述UE根据所述第一信息调整所述UE在所述第一信道上的退避窗口;
其中,所述UE获取所述第一信息包括下述步骤中的至少一个:
所述UE根据基站发送的第二信息获取所述第一信息;
所述UE根据所述第一信道上的空闲信道评测CCA结果获取所述第一信息;
所述UE根据所述第一信道上的系统冲突检测结果获取所述第一信息;
所述UE根据所述第一信道上的退避窗口长度是否达到最大长度获取所述第一信息。
结合本发明第二方面,在本发明第二方面的第一种可能的实现方式中,所述第二信息为应答信息,所述方法还包括:
所述UE接收所述基站发送的至少一个应答信息,所述至少一个应答信息为所述基站对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
所述UE根据所述基站发送的第二信息获取所述第一信息,包括:
所述UE根据所述至少一个应答信息获取所述第一信息;
所述UE根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
若所述第一信息中包括至少一个NACK信息,则所述UE增大所述UE在所述第一信道上的退避窗口;
若所述第一信息中包括至少一个ACK信息,则所述UE减小所述UE在所述第一信道上的退避窗口,或者,所述UE保持所述UE在所述第一信道上的退避窗口不变。
结合本发明第二方面,在本发明第二方面的第二种可能的实现方式中,所述UE根据所述第一信道上的空闲信道评测CCA结果获取所述第 一信息,包括:
所述UE在所述第一信道上进行CCA检测,获取所述第一信道的空闲时间信息和所述第一信道的CCA检测总时间;
所述UE根据所述第一信道的空闲时间与所述第一信道的CCA检测总时间的比值得到第十八数值,所述第十八数值为所述第一信息;
所述UE根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
若所述第十八数值小于预设的第二十一阈值,则所述UE增大所述UE在所述第一信道上的退避窗口;
若所述第十八数值大于预设的第二十二阈值,则所述UE减小所述UE在所述第一信道上的退避窗口,或者,所述UE保持所述UE在所述第一信道上的退避窗口不变。
结合本发明第二方面,在本发明第二方面的第三种可能的实现方式中,所述UE根据所述第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
所述UE在第一信道上以CCA时隙为单位进行CCA检测,获取所述第一信道的空闲CCA时隙个数信息,其中,所述CCA时隙为预定义的时间长度,所述第一信道的空闲CCA时隙个数信息为所述第一信息;
所述UE根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
若所述UE在所述第一信道上的M个CCA时隙的时间长度内没有检测到N个空闲CCA时隙,则所述UE增大所述UE在所述第一信道上的退避窗口;
若所述UE在所述第一信道上的M个CCA时隙的时间长度内检测到N个空闲CCA时隙,则所述UE减小所述UE在所述第一信道上的退避窗口,或者,所述UE保持所述UE在所述第一信道上的退避窗口不变;
其中M个CCA时隙的时间长度为当前所述UE在所述第一信道上的退避窗口长度,N为UE在进行CCA检测前随机生成的0到M之间的随机数。
结合本发明第二方面,在本发明第二方面的第四种可能的实现方式 中,所述UE根据所述第一信道上的系统冲突检测结果获取所述第一信息,包括:
所述UE在第一信道上检测WI-FI系统或LAA系统或其他系统的信号,获得所述UE与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息,所述UE与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息为所述第一信息;
所述UE根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
若所述第一信息指示系统冲突,则所述UE增大所述UE在所述第一信道上的退避窗口;
若所述第一信息指示系统不冲突,则所述UE减小所述UE在所述第一信道上的退避窗口,或者,所述UE保持所述UE在所述第一信道上的退避窗口不变。
结合本发明第二方面,在本发明第二方面的第五种可能的实现方式中,所述UE根据所述第一信道上的退避窗口长度是否达到最大长度获取所述第一信息,包括:
所述UE判断所述UE在所述第一信道上的退避窗口的长度达到所述最大长度;
所述UE根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括:
若所述UE在所述第一信道上的退避窗口的长度达到所述最大长度并保持P次,则所述UE减小所述UE在所述第一信道上的退避窗口,其中,P为不小于0的整数。
本发明第三方面提供一种基站,包括:
获取模块,用于获取用于指示调整第一信道上的退避窗口的第一信息;
调整模块,用于根据所述第一信息调整所述退避窗口;
其中,所述获取模块获取所述第一信息包括下述步骤中的至少一个:
根据至少一个用户设备UE发送的第二信息获取所述第一信息;
根据第一信道上的空闲信道评测CCA结果获取所述第一信息;
根据第一信道上的系统冲突检测结果获取所述第一信息;
根据第一信道上的退避窗口长度是否达到最大长度获取所述第一信息。
结合本发明第三方面,在本发明第三方面的第一种可能的实现方式中,所述第二信息为应答信息,所述基站还包括:
接收模块,用于接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
所述获取模块根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:
根据所述至少一个UE发送的所述至少一个应答信息获取所述第一信息;
所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第一信息为等效NACK信息,则增大所述基站在所述第一信道上的退避窗口;
若所述第一信息为等效ACK信息,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
结合本发明第三方面的第一种可能的实现方式,在本发明第三方面的第二种可能的实现方式中,所述获取模块根据所述至少一个UE发送的所述至少一个应答信息获取所述第一信息,包括以下步骤中的至少一个:
根据所述至少一个应答信息中ACK信息所占的个数与所述至少一个应答信息的总个数的比值得到第一数值,若所述第一数值大于预设的第一阈值,则所述第一信息为等效ACK信息;
根据所述至少一个应答信息中NACK信息所占的个数与所述至少一个应答信息的总个数的比值得到第二数值,若所述第二数值大于预设的第二阈值,则所述第一信息为等效NACK信息;
根据所述至少一个应答信息中ACK信息所占的个数得到第三数值,若所述第三数值大于预设的第三阈值,则所述第一信息为等效ACK信息;
根据所述至少一个应答信息中NACK信息所占的个数得到第四数值,若所述第四数值大于预设的第四阈值,则所述第一信息为等效NACK信息。
结合本发明第三方面,在本发明第三方面的第三种可能的实现方式中,所述第二信息为应答信息,所述基站还包括:
接收模块,用于接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
所述获取模块根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:根据所述至少一个UE中第一UE发送的至少一个应答信息获取所述第一UE的第一信息,所述第一UE为所述至少一个UE中的任一UE;
所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第一UE的第一信息为等效NACK信息,则增大所述基站在所述第一信道上用于调度所述第一UE的退避窗口,或者,保持所述基站在所述第一信道上用于调度所述第一UE的退避窗口不变且在第一时间内不调度所述第一UE;
若所述第一UE的第一信息为等效ACK信息,则减小所述基站在所述第一信道上用于调度所述第一UE的退避窗口,或者,保持所述基站在所述第一信道上用于调度所述第一UE的退避窗口不变。
结合本发明第三方面的第三种可能的实现方式,在本发明第三方面的第四种可能的实现方式中,所述获取模块根据所述至少一个UE中的第一UE发送的至少一个应答信息获取所述第一UE的第一信息,包括以下步骤中的至少一个:
根据所述第一UE发送的至少一个应答信息中ACK信息所占的个数与所述第一UE发送的至少一个应答信息的总个数的比值得到第五数值,若所述第五数值大于预设的第五阈值,则所述第一UE的第一信息为等效ACK信息;
根据所述第一UE发送的至少一个应答信息中NACK信息所占的个数与所述第一UE发送的至少一个应答信息的总个数的比值得到第六数值,若所述第六数值大于预设的第六阈值,则所述第一UE的第一信息为等效NACK信息;
根据所述第一UE发送的至少一个应答信息中ACK信息所占的个数得到第七数值,若所述第七数值大于预设的第七阈值,则所述第一UE的第一信息为等效ACK信息;
根据所述第一UE发送的至少一个应答信息中NACK信息所占的个数得到第八数值,若所述第八数值大于预设的第八阈值,则所述第一UE的第一信息为等效NACK信息。
结合本发明第三方面,在本发明第三方面的第五种可能的实现方式中,所述第二信息为应答信息和预编码矩阵指示PMI信息,所述基站还包括:
接收模块,用于接收所述至少一个UE发送的至少一个应答信息和至少一个PMI信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息,所述至少一个PMI信息用于指示至少一个PMI指示方向;
所述获取模块根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:根据所述至少一个PMI信息所指示的至少一个PMI方向上的第一PMI指示方向上的至少一个应答信息获取所述第一PMI指示方向的第一信息,所述第一PMI指示方向为所述至少一个PMI指示方向中的任一PMI指示方向;
所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第一PMI指示方向的第一信息为等效NACK信息,则增大所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口,或者,保持所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口不变且在第二时间内不调度所述第一PMI指示方向上的UE;
若所述第一PMI指示方向的第一信息为等效ACK信息,则减小所述 基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口,或者,保持所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口不变。
结合本发明第三方面的第五种可能的实现方式,在本发明第三方面的第六种可能的实现方式中,所述获取模块根据所述至少一个PMI信息所指示的至少一个PMI方向上的第一PMI指示方向上的至少一个应答信息获取所述第一PMI指示方向的第一信息,包括以下步骤中的至少一个:
根据所述第一PMI指示方向上的至少一个应答信息中ACK信息所占的个数与所述第一PMI指示方向上的至少一个应答信息的总个数的比值得到第九数值,若所述第九数值大于预设的第九阈值,则所述第一PMI指示方向上的第一信息为等效ACK信息;
根据所述第一PMI指示方向上的至少一个应答信息中NACK信息所占的个数与所述第一PMI指示方向上的至少一个应答信息的总个数的比值得到第十数值,若所述第十数值大于预设的第十阈值,则所述第一PMI指示方向上的第一信息为等效NACK信息;
根据所述第一PMI指示方向上的至少一个应答信息中ACK信息所占的个数得到第十一数值,若所述第十一数值大于预设的第十一阈值,则所述第一PMI指示方向的第一信息为等效ACK信息;
根据所述第一PMI指示方向上的至少一个应答信息中NACK信息所占的个数得到第十二数值,若所述第十二数值大于预设的第十二阈值,则所述第一PMI指示方向上第一信息为等效NACK信息。
结合本发明第三方面,在本发明第三方面的第七种可能的实现方式中,所述第二信息为冲突信息,所述基站还包括:
接收模块,用于接收所述至少一个UE发送的至少一个冲突信息,所述冲突信息用于指示所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突;
所述获取模块根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:根据所述至少一个UE发送的所述至少一个冲突信息获取所述第一信息;
所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中 的至少一个:
若所述第一信息为等效冲突,则增大所述基站在所述第一信道上的退避窗口;
若所述第一信息为等效不冲突,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
结合本发明第三方面的第七种可能的实现方式,在本发明第三方面的第八种可能的实现方式中,所述获取模块根据所述至少一个UE发送的所述至少一个冲突信息获取所述第一信息,包括以下步骤中的至少一个:
根据所述至少一个冲突信息中指示不冲突信息所占的个数与所述至少一个冲突信息的总个数的比值得到第十三数值,若所述第十三数值大于预设的第十三阈值,则所述第一信息为等效不冲突;
根据所述至少一个冲突信息中指示冲突信息所占的个数与所述至少一个冲突信息的总个数的比值得到第十四数值,若所述第十四数值大于预设的第十四阈值,则所述第一信息为等效冲突;
根据所述至少一个冲突信息中指示不冲突信息所占的个数得到第十五数值,若所述第十五数值大于预设的第十五阈值,则所述第一信息为等效不冲突;
根据所述至少一个冲突信息中指示冲突信息所占的个数得到第十六数值,若所述第十六数值大于预设的第十六阈值,则所述第一信息为等效冲突。
结合本发明第三方面,在本发明第三方面的第九种可能的实现方式中,所述第二信息为应答信息,所述基站还包括:
接收模块,用于接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
所述获取模块根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:根据所述至少一个UE中第一UE发送的应答信息得到所述第一UE的自动重传请求ARQ和/或混合自动重传请求HARQ的重传次数信息,所述第一UE的ARQ和/或HARQ的重传次数为所述第一信息;
所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第一UE的ARQ和/或HARQ的重传次数大于预设的第十七阈值,则增大所述基站在所述第一信道上的退避窗口;
若所述第一UE的ARQ和/或HARQ的重传次数小于预设的第十八阈值,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
结合本发明第三方面,在本发明第三方面的第十种可能的实现方式中,所述获取模块根据第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
在第一信道上进行CCA检测,获取所述第一信道上的空闲时间信息和所述第一信道的CCA检测总时间;
根据所述第一信道的空闲时间与所述第一信道的CCA检测总时间的比值得到第十七数值,所述第十七数值为所述第一信息;
所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第十七数值小于预设的第十九阈值,则增大所述基站在所述第一信道上的退避窗口;
若所述第十七数值大于预设的第二十阈值,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
结合本发明第三方面,在本发明第三方面的第十一种可能的实现方式中,所述获取模块根据第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
在第一信道上以CCA时隙为单位进行CCA检测,获取所述第一信道的空闲CCA时隙个数信息,其中,所述CCA时隙为预定义的时间长度,所述第一信道的空闲CCA时隙个数信息为所述第一信息;
所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若在所述第一信道上的M个CCA时隙的时间长度内没有检测到N个 空闲CCA时隙,则增大所述基站在所述第一信道上的退避窗口;
若在所述第一信道上的M个CCA时隙的时间长度内检测到至少N个空闲CCA时隙,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变;
其中,所述M个CCA时隙的时间长度为所述基站当前时刻在所述第一信道上的退避窗口长度,N为基站在进行CCA检测前随机生成的0到M之间的随机数。
结合本发明第三方面,在本发明第三方面的第十二种可能的实现方式中,所述获取模块根据第一信道上的系统冲突检测结果获取所述第一信息,包括:
在第一信道上检测WI-FI系统或LAA系统或其他系统的信号,获得所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息,所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息为所述第一信息;
所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第一信息指示系统冲突,则增大所述基站在所述第一信道上的退避窗口;
若所述第一信息指示系统不冲突,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
结合本发明第三方面,在本发明第三方面的第十三种可能的实现方式中,所述获取模块根据第一信道上的退避窗口长度是否达到最大长度获取所述第一信息,包括:
确定所述基站在所述第一信道上的退避窗口的长度达到所述最大长度;
所述调整模块根据所述第一信息调整所述退避窗口,包括:
若所述基站在所述第一信道上的退避窗口的长度达到所述最大长度并保持P次,则减小所述基站在所述第一信道上的退避窗口,其中,P为不小于0的整数。
本发明第四方面提供一种UE,包括:
获取模块,用于获取用于指示调整第一信道上的退避窗口的第一信息;
调整模块,用于根据所述第一信息调整所述UE在所述第一信道上的退避窗口;
其中,所述获取模块获取所述第一信息包括下述步骤中的至少一个:
根据基站发送的第二信息获取所述第一信息;
根据所述第一信道上的空闲信道评测CCA结果获取所述第一信息;
根据所述第一信道上的系统冲突检测结果获取所述第一信息;
根据所述第一信道上的退避窗口长度是否达到最大长度获取所述第一信息。
结合本发明第四方面,在本发明第四方面的第一种可能的实现方式中,所述第二信息为应答信息,所述UE还包括:
接收模块,用于接收所述基站发送的至少一个应答信息,所述至少一个应答信息为所述基站对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
所述获取模块根据所述基站发送的第二信息获取所述第一信息,包括:
根据所述至少一个应答信息获取所述第一信息;
所述调整模块根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
若所述第一信息中包括至少一个NACK信息,则增大所述UE在所述第一信道上的退避窗口;
若所述第一信息中包括至少一个ACK信息,则减小所述UE在所述第一信道上的退避窗口,或者,所述UE保持所述UE在所述第一信道上的退避窗口不变。
结合本发明第四方面,在本发明第四方面的第二种可能的实现方式中,所述获取模块根据所述第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
在所述第一信道上进行CCA检测,获取所述第一信道的空闲时间信息和所述第一信道的CCA检测总时间;
根据所述第一信道的空闲时间与所述第一信道的CCA检测总时间的比值得到第十八数值,所述第十八数值为所述第一信息;
所述调整模块根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
若所述第十八数值小于预设的第二十一阈值,则增大所述UE在所述第一信道上的退避窗口;
若所述第十八数值大于预设的第二十二阈值,则减小所述UE在所述第一信道上的退避窗口,或者,保持所述UE在所述第一信道上的退避窗口不变。
结合本发明第四方面,在本发明第四方面的第三种可能的实现方式中,所述获取模块根据所述第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
在第一信道上以CCA时隙为单位进行CCA检测,获取所述第一信道的空闲CCA时隙个数信息,其中,所述CCA时隙为预定义的时间长度,所述第一信道的空闲CCA时隙个数信息为所述第一信息;
所述调整模块根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
若所述UE在所述第一信道上的M个CCA时隙的时间长度内没有检测到N个空闲CCA时隙,则增大所述UE在所述第一信道上的退避窗口;
若所述UE在所述第一信道上的M个CCA时隙的时间长度内检测到N个空闲CCA时隙,则减小所述UE在所述第一信道上的退避窗口,或者,保持所述UE在所述第一信道上的退避窗口不变;
其中M个CCA时隙的时间长度为当前所述UE在所述第一信道上的退避窗口长度,N为UE在进行CCA检测前随机生成的0到M之间的随机数。
结合本发明第四方面,在本发明第四方面的第四种可能的实现方式中,所述获取模块根据所述第一信道上的系统冲突检测结果获取所述第一信息,包括:
在第一信道上检测WI-FI系统或LAA系统或其他系统的信号,获得所述UE与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲 突的信息,所述UE与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息为所述第一信息;
所述调整模块根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
若所述第一信息指示系统冲突,则增大所述UE在所述第一信道上的退避窗口;
若所述第一信息指示系统不冲突,则减小所述UE在所述第一信道上的退避窗口,或者,保持所述UE在所述第一信道上的退避窗口不变。
结合本发明第四方面,在本发明第四方面的第五种可能的实现方式中,所述获取模块根据所述第一信道上的退避窗口长度是否达到最大长度获取所述第一信息,包括:
判断所述UE在所述第一信道上的退避窗口的长度达到所述最大长度;
所述调整模块根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括:
若所述UE在所述第一信道上的退避窗口的长度达到所述最大长度并保持P次,则减小所述UE在所述第一信道上的退避窗口,其中,P为不小于0的整数。
本发明第五方面提供一种基站,包括:处理器、存储器、通信接口和系统总线,所述存储器和所述通信接口通过所述系统总线和所述处理器连接并完成相互间的通信;
所述存储器,用于存储计算机执行指令;
所述通信接口用于和其他设备进行通信;
所述处理器,用于运行所述计算机执行指令,执行如本发明第一方面以及本发明第一方面的第一种至第十三种可能的实现方式中的任一所述的方法。
本发明第六方面提供一种UE,包括:处理器、存储器、通信接口和系统总线,所述存储器和所述通信接口通过所述系统总线和所述处理器连接并完成相互间的通信;
所述存储器,用于存储计算机执行指令;
所述通信接口用于和其他设备进行通信;
所述处理器,用于运行所述计算机执行指令,执行如本发明第二方面以及本发明第二方面的第一种至第五种可能的实现方式中任一所述的方法。
本发明实施例提供的退避窗口的调整方法和装置,在下行传输中,基站获取用于指示调整第一信道上的退避窗口的第一信息,根据第一信息调整退避窗口。在上行传输中,UE获取用于指示第一信道上的退避窗口的第一信息,根据第一信息调整UE在第一信道上的退避窗口。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案,下面将对实施例或现有技术描述中所需要使用的附图作一简单地介绍,显而易见地,下面描述中的附图是本发明的一些实施例,对于本领域普通技术人员来讲,在不付出创造性劳动性的前提下,还可以根据这些附图获得其他的附图。
图1为本发明实施例一提供的退避窗口的调整方法的流程图;
图2为本发明实施例二提供的退避窗口的调整方法的流程图;
图3为本发明实施例三提供的退避窗口的调整方法的流程图;
图4为本发明实施例四提供的退避窗口的调整方法的流程图;
图5为本发明实施例五提供的退避窗口的调整方法的流程图;
图6为本发明实施例六提供的退避窗口的调整方法的流程图;
图7为本发明实施例七提供的退避窗口的调整方法的流程图;
图8为本发明实施例八提供的退避窗口的调整方法的流程图;
图9为本发明实施例九提供的退避窗口的调整方法的流程图;
图10为本发明实施例十提供的退避窗口的调整方法的流程图;
图11为本发明实施例十一提供的退避窗口的调整方法的流程图;
图12为本发明实施例十二提供的退避窗口的调整方法的流程图;
图13为本发明实施例十三提供的退避窗口的调整方法的流程图;
图14为本发明实施例十四提供的退避窗口的调整方法的流程图;
图15为发明实施例十五提供的一种基站的结构示意图;
图16为发明实施例十六提供的一种基站的结构示意图;
图17为本发明实施例二十四提供的一种UE的结构示意图;
图18为本发明实施例二十五提供的一种UE的结构示意图;
图19为本发明实施例二十九提供的基站的结构示意图;
图20为本发明实施例三十提供的UE的结构示意图。
具体实施方式
为使本发明实施例的目的、技术方案和优点更加清楚,下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
LTE系统、LAA-LTE和U-LTE系统,在使用免许可频谱资源进行通信时需要考虑和现有的应用免许可频谱资源进行通信的通信系统友好共存。为了达到这个目的,在一些国家和地区,例如,欧洲和日本等,引入了LBT的信道接入机制。按照欧洲法规的规定,基于FBE的LBT机制,基于LBE的LBT机制和Wi-Fi系统使用的CSMA/CA机制都是符合要求的。这三种信道接入机制简要介绍如下。
基于FBE的LBT机制的特点是,设备在工作信道上进行数据传输前,需要从固定时刻开始对该信道在一段时间内通过能量检测的方式进行CCA检测,一段时间的长度不应小于20us,通常可以被称作CCA slot。如果设备通过CCA检测判断CCA slot内信道空闲,那么设备可以以固定的帧周期的格式在预定时刻开始进行信号发送。如果设备通过CCA检测判断CCA slot内信道被占用,只能等待下一个固定时刻再开始CCA检测。
基于LBE的LBT机制的特点是,设备在工作信道上进行数据传输前,可以从任意时刻开始对该信道在一段时间内通过能量检测的方式进行CCA检测,一段时间的长度不应小于20us,通常可以被称作CCA slot。 初始接入时,设备通过CCA检测判断一个CCA slot内信道空闲即可以在该信道上进行信号传输。但一旦检测到信道被占用,或该设备在该信道上的传输时间达到系统允许的最大传输时间时,设备需要进行ECCA(Extended CCA)检测。每次执行ECCA检测前,设备需要生成一个随机整数N存在计数器里,N是从1到q里随机选择的一个数,N可以认为是退避长度,q可以认为是竞争窗口(Contention Window)的长度。ECCA检测过程也是退避过程(Backoff procedure),所以竞争窗口也叫退避窗口(Backoff Window)。在EN 301 893的171版本的法规中,q是设备申称的一个值,具体取值可以从4到32里选择。设备每次通过CCA检测判断一个CCA slot内信道是否空闲,若信道空闲,则计数器里的N值减1,若信道检测为忙,则计数器里的N值不变。当计数器里的N值减为0时,设备可以开始数据传输。每次传输的最大信道占用时间应小于(13/32)*q毫秒。
Wi-Fi系统使用的CSMA/CA机制的特点是,在每次接入信道前,设备需要生成一个在[0,CW]范围里均匀分布的伪随机整数M存在计数器里,其中CW为竞争窗口的长度,M可以认为是退避长度,。Wi-Fi系统的竞争窗口有预定义的最小值和最大值,CW的初始值为预定义的最小值。在CCA检测过程中,每次退避过程开始前,设备需要先判断帧间间隔(Interframe space,简称IFS)的时间内信道空闲。该帧间间隔长度可以保护其他Wi-Fi设备传输的应答信息不受干扰。针对不同的业务类型,Wi-Fi定义了多种不同长度的IFS,用来区分不同业务的优先级。以分布式协调功能(distributed coordination function,DCF)业务为例,IFS的长度为DIFS(DCF interframe space)。在CCA检测过程中,设备需要先判断DIFS的时间内信道空闲,才开始退避过程。在退避过程中,设备每次通过CCA检测判断一个退避时隙(backoff slot,也可以称为CCA时隙)内信道是否空闲。若信道空闲,则计数器里的M值减1。若信道检测为忙,则计数器里的M值不变,且设备需要再次判断DIFS的时间内信道空闲,才能恢复退避过程。当计数器里的M值减为0时,设备可以开始数据传输。在每次传输结束后,设备会等待接收端返回一个正确接收数据包的ACK(Acknowledge,肯定应答)信息。如果设备正确接收ACK信息,那么竞争窗口的长度CW重设为最小值;如果设备在预 定义时间内没有正确接收ACK信息,那么竞争窗口的长度CW翻倍。
根据上面的描述可知,如果LAA系统,或者其他使用免许可频谱资源的系统,只遵循法规要求的LBT机制,会导致LAA系统或其他系统在和Wi-Fi系统竞争免许可频谱上的信道资源时,一旦发生资源冲突,LAA系统或其他系统可能以更大的概率抢占信道,从而降低Wi-Fi系统接入信道的概率,不能保证公平地和Wi-Fi共存。
为了LAA系统和Wi-Fi系统更公平友好地共存,一种直接的方式就是LAA系统在信道接入过程中采用和Wi-Fi类似的可变退避窗口长度。但是考虑到LAA系统和Wi-Fi系统的技术特点,Wi-Fi系统的退避窗口调整条件不能直接用于LAA系统。两者具体的技术区别如下:
首先,LAA系统和Wi-Fi系统有不同的协议层架构。LAA系统有物理层的混合自动重传请求(Hybrid Automatic Repeat Request,HARQ)和无线链路控制(Radio Link Control,RLC)的自动重传请求(Automatic Repeat-reQuest,ARQ),反馈既有ACK信息,也有NACK(Negative Acknowledge,否定应答)信息。而Wi-Fi系统仅有MAC层的ARQ,且只反馈ACK,不反馈NCK,从而不能适用于LAA系统。
其次,LAA系统是基于多用户调度的机制,而Wi-Fi系统目前仅有单用户调度。当有多个用户反馈ACK时,Wi-Fi系统的单用户调度机制下的指数窗口翻番不适用于LAA系统。
再次,LAA系统有更好的抗干扰性能。当LAA系统和LAA系统共存时,即便有一定的干扰存在,LAA系统仍然可以正确的进行数据接收,所以LAA系统可以容忍一定的冲突发生。即LAA系统和LAA系统共存时,容许一定的冲突发生,即容许退避窗口保持不变。而Wi-Fi系统的抗干扰性相对于LAA系统更差,即一旦发生冲突时,不管和任何系统共存,Wi-Fi系统的退避窗口都会翻番。
最后,LAA系统基于中心调度,容许更加灵活的退避窗口调整,即容许基于闭环反馈或是开环调整。而Wi-Fi系统的退避窗口翻番只能根据接收节点的反馈来调整,不能做开环调整。
因此,本发明根据LAA系统的特点,提出了一种可用于多用户调度系统的退避窗口调整方法,保证免许可频谱上不同系统公平友好地共存。 需要进行说明的是,法规要求的LBT机制和Wi-Fi系统采用的信道接入机制除了退避窗口的长度及调整方式不同,Wi-Fi系统在每次开始/恢复退避过程前还引入了一个额外的延迟(defer,即设备在退避过程前需要保证IFS的时间内信道空闲),用于保护同系统的其他设备传输的应答信息不受干扰。对于LAA系统来说,应答信息的反馈是在数据包传输的4毫秒之后,且应答信息可以通过和数据包传输的信道不同的其他信道(如许可频谱上的信道)进行反馈,因此没有必要在每次开始/恢复退避过程前引入额外的延迟。但是,为了保证不同通信系统能公平地竞争免许可频谱上的信道资源,不排除LAA系统在免许可频谱上的信道接入机制过程中引入类似的延迟机制。
在本发明的实施例中,用户设备(User Equipment,简称UE),也可称之为终端(Terminal)、移动台(Mobile Station)、移动终端(Mobile Terminal)、移动用户设备等,可以经无线接入网(例如,RAN,Radio Access Network)与一个或多个核心网进行通信,用户设备可以是移动终端,如移动电话(或称为“蜂窝”电话)和具有移动终端的计算机,例如,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,或者是机械型通信设备(MTC UE),等等,它们与无线接入网交换语音和/或数据。
在本发明的实施例中,基站可以是LTE系统或者LAA-LTE系统中的演进型基站eNB、宏基站(Macro)、微基站(也称为“小基站”)(Pico)、微微基站、接入站点(Access Point,AP)或传输站点(Transmission Point,TP)等。本发明对此并不限定。但为描述方便,下述实施例将以基站和用户设备为例进行说明。
本方法和装置可适用于LAA之外的其他信道接入机制,本发明对此并不限制。
图1为本发明实施例一提供的退避窗口的调整方法的流程图,如图1所示,本实施例的方法可以包括以下步骤:
步骤101、基站获取用于指示调整第一信道上的退避窗口的第一信息。
基站可以有许可频谱和免许可频谱上的多个信道,本实施例中的第一信道并不是特指基站的某个信道,第一信道可以为基站具有的多个信道中 的任意一个信道。基站获取用于指示调整第一信道上的退避窗口的第一信息,可以包括下述步骤中的至少一个:
基站根据至少一个UE发送的第二信息获取第一信息;
基站根据第一信道上的CCA结果获取第一信息;
基站根据第一信道上的系统冲突检测结果获取第一信息;
基站根据第一信道上的退避窗口长度是否达到最大长度获取第一信息。
其中,UE发送的第二信息可以为:应答信息,和/或,信道状态信息(Channel State Information,简称CSI)信息,和/或,冲突信息。其中,应答信息包括ACK信息和/或NACK信息。CSI信息可以是信道质量指示(Channel Quality Indicator,CQI)信息,和/或,信道预编码矩阵指示(Pre-coding Matrix Indicator,简称PMI)信息,和/或,秩指示(Rank Indicator,RI)信息。冲突信息用于指示基站与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突。当系统调度多个用户时,UE反馈的应答信息和/或冲突信息可能有多个,第一信息可以由多个应答信息和/或冲突信息获得。因此,第一信息可以为:等效应答信息或等效冲突信息,等效应答信息为等效ACK信息或等效NACK信息,等效冲突信息为等效冲突或者等效不冲突。
步骤102、基站根据第一信息调整退避窗口。
需要说明的是,本实施例及本发明的所有实施例中,基站和/或UE在利用免许可频谱上的信道资源进行通信前需要竞争信道,在基站和/或UE设备执行信道接入机制的过程中,退避窗口是启动退避过程前,用于确定退避长度的参数值。退避窗口可以有一个预定义的最小长度和一个最大长度。通常情况下,退避窗口的初始值可以是预定义的最小长度。如果退避窗口长度用q表示,基站和/或UE根据所述长度为q的退避窗口竞争到信道的使用权后,当次传输允许的最大信道占用时间应小于(13/32)*q毫秒,因此,如果退避窗口长度不是一个固定值,基站可以将退避窗口长度通过信令通知的方式通知UE,或预定义退避窗口调整规则使UE可以根据所述预定义规则获得的退避窗口长度。UE可以根据获得的退避窗口长度信息得到对应的最大信道占用时间信息。
本实施例中,退避窗口可以为下述几种窗口:基站在第一信道上的退避窗口、基站在第一信道上用于调度第一UE的退避窗口、基站在第一信道上用于调度第一PMI指示方向上的退避窗口。其中,第一UE为基站在第一信道上调度的所有UE中的任一UE,第一PMI指示方向为基站在第一信道上用于调度所有PMI指示方向中的任一PMI指示方向。当退避窗口为基站在第一信道上的退避窗口时,基站在第一信道上用于调度所有UE的退避窗口都相同;当退避窗口为基站在第一信道上用于调度第一UE的退避窗口时,基站在第一信道调度不同UE时,用于调度不同UE的退避窗口不同;当退避窗口为基站在第一信道上用于调度PMI指示方向上的UE的退避窗口时,基站在第一信道调度不同PMI指示方向上的UE时,用于调度不同PMI指示方向上的UE的退避窗口不同,基站用于调度同一个PMI指示方向上的UE的退避窗口相同。
本实施例中,基站调整退避窗口包括以下三种情况:基站增大退避窗口,或者,基站减小退避窗口,或者,基站保持退避窗口不变。
需要说明的是,本实施例以及下述实施例中,基站具体可以通过以下几种方式增大退避窗口的长度:基站以指数增长的方式增加退避窗口的长度;或者,基站以线性增长的方式增加退避窗口的长度;或者,基站在预定义的退避窗口的长度集合中选择一个更大的长度;或者,基站将退避窗口增大为最大长度,或者基站以其他方式增大退避窗口的长度。基站具体可以通过以下几种方式减小退避窗口的长度:基站以指数衰减的方式减小退避窗口的长度;或者,基站以线性的方式减小退避窗口的长度;或者,基站在预定义的退避窗口的长度集合中选择一个更小的长度;或者,基站将退避窗口的长度回退为初始值,或者基站以其他方式减小退避窗口的长度。
本实施例中,基站通过获取用于指示调整第一信道上的退避窗口的第一信息,然后,根据第一信息调整退避窗口。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
下面采用几个具体的实施例,对图1所示方法实施例的技术方案进行详细说明。
图2为本发明实施例二提供的退避窗口的调整方法的流程图,本实施例中,第二信息为UE发送的应答信息,第一信息为等效应答信息。如图2所示,本实施例提供的方法可以包括以下步骤:
步骤201、基站接收至少一个UE发送的至少一个应答信息。
至少一个应答信息为至少一个UE发送的对第一信道上传输的至少一个数据包的应答信息,其中,至少一个应答信息中的每个应答信息可以为ACK信息或者NACK信息。
在LAA系统中,基站支持多用户调度机制,在基站通过第一信道向至少一个UE发送数据包后,UE会向基站返回对第一信道上传输的数据包的应答信息。本实施例中,第一信道可以包括P个调度单元,其中每个调度单元包含时域和频域的资源,可用于调度至少一个数据包,则基站接收至少一个UE发送的至少一个应答信息,具体为:基站接收至少一个UE在第一信道上的P个调度单元上发送的Q个应答信息。
其中,P为不小于1的正整数。应理解,LAA系统中的数据包传输和数据包应答信息的反馈时延为4毫秒,基站在为本次数据传输竞争信道资源时,可能还没有收到上次传输的所有调度单元的应答信息,因此,该P个调度单元可以为基站在上一调度周期内所使用的全部调度单元或部分调度单元,或者为基站在历史调度中所使用的全部调度单元或部分调度单元,基站在历史调度中所使用的全部调度单元可以是基站在第一信道上的历史调度中所使用的调度单元的均值,基站在第一信道上的历史调度中所使用的调度单元的均值可以通过统计历史调度数据得到。特别地,若每次允许传输的最大信道占用时间较小,例如为4毫秒,在这种情况下,基站在为第i次数据传输竞争信道资源时使用的退避窗口可以是由第i-2次数据传输时使用的调度单元对应的应答信息决定的。
Q为不小于P的正整数。应理解,当系统中不存在空分复用时,每个调度单元用于调度一个数据包,Q等于P;当系统中存在空分复用时,每个调度单元用于调度至少一个数据包,Q大于P。基站接收到的该Q个应答信息包括ACK信息和/或NACK信息,当UE正确接收到基站在第一信道上发送的所有数据包时,该Q个应答信息全部为ACK信息,当UE只正确接收到基站在第一信道上发送的部分数据包,基站在第一信道上发送 的部分数据包UE没有正确接收时,该Q个应答信息中包括ACK信息和NACK信息,当基站在第一信道上发送的所有数据包UE都没有正确接收时,该Q个应答信息全部为NACK信息。
步骤202、基站根据至少一个UE发送的至少一个应答信息获取第一信息。
本实施例中,第一信息为等效应答信息,基站根据至少一个UE发送的至少一个应答信息获取第一信息,包括以下步骤中的至少一个:
基站根据至少一个应答信息中ACK信息所占的个数与至少一个应答信息的总个数的比值得到第一数值,若第一数值大于预设的第一阈值,则第一信息为等效ACK信息;
基站根据至少一个应答信息中NACK信息所占的个数与至少一个应答信息的总个数的比值得到第二数值,若第二数值大于预设的第二阈值,则第一信息为等效NACK信息;
基站根据至少一个应答信息中ACK信息所占的个数得到第三数值,若第三数值大于预设的第三阈值,则第一信息为等效ACK信息;
基站根据至少一个应答信息中NACK信息所占的个数得到第四数值,若第四数值大于预设的第四阈值,则第一信息为等效NACK信息。
本实施例中,第一数值和第二数值的取值范围均为:大于等于0,小于等于1,第一阈值和第二阈值的取值范围均为:大于0小于1。其中,第一数值和第二数值可以相同也可以不同。第三数值和第四数值的取值范围均为大于等于0的整数,第三阈值和第四阈值的取值范围均为大于等于1的正整数,其中,第三阈值和第四阈值可以相同也可以不同。
步骤203、基站根据第一信息调整退避窗口。
基站根据第一信息调整退避窗口,包括以下步骤中的至少一个:
若第一信息为等效NACK信息,则基站增大基站在第一信道上的退避窗口;若第一信息为等效ACK信息,则基站减小基站在第一信道上的退避窗口的长度,或者,基站保持基站在第一信道上的退避窗口不变。
第一信息为等效NACK信息说明第一信道冲突的可能性比较大,这时为了避免信道冲突,应该增大基站在第一信道上的退避窗口,使得基站接入信道的概率变小,从而避免信道冲突。第一信息为等效ACK信息,说 明第一信道冲突的可能性很小,这时为了增大系统容量,应该增大基站接入信道的概率,因此,需要减小基站在第一信道上的退避窗口,或者,保持基站在第一信道上的退避窗口不变。在具体实现时,基站可以根据LAA系统当前的吞吐量和/或第一信道的信道质量确定应该减少基站在第一信道上的退避窗口,还是保持基站在第一信道上的退避窗口不变。例如,若LAA系统的当前的吞吐量很小,且第一信道的信道质量很好,那么基站可以减小基站在第一信道上的退避窗口,若LAA系统的当前吞吐量较大,那么基站可以保持基站在第一信道上的退避窗口不变。
本实施例中,基站通过接收至少一个UE发送的至少一个应答信息,根据至少一个应答信息得到第一信息,若第一信息为等效NACK信息,则基站增大基站在第一信道上的退避窗口;若第一信息为等效ACK信息,则基站减小基站在第一信道上的退避窗口,或者,基站保持基站在第一信道上的退避窗口不变。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
图3为本发明实施例三提供退避窗口的调整方法的流程图,本实施例和实施例二的区别为:本实施例中,基站会计算每个UE的等效应答信息,根据每个UE的等效应答信息调整基站在第一信道上的用于调度每个UE的退避窗口。如图3所示,本实施例提供的方法可以包括以下步骤:
步骤301、基站接收至少一个UE发送的至少一个应答信息。
本步骤的具体实现方式可参照实施例二中步骤201的相关描述,这里不再赘述。
步骤302、基站根据至少一个UE中第一UE发送的至少一个应答信息获取第一UE的第一信息,第一UE为至少一个UE中任一UE。
本实施例中,第一UE的第一信息为第一UE的等效应答信息,基站根据至少一个UE中第一UE发送的至少一个应答信息获取第一UE的第一信息,包括以下步骤中的至少一个:
基站根据第一UE发送的至少一个应答信息中ACK信息所占的个数与第一UE发送的至少一个应答信息的总个数的比值得到第五数值,若第五数值大于预设的第五阈值,则第一UE的第一信息为等效ACK信息。
基站根据第一UE发送的至少一个应答信息中NACK信息所占的个数与第一UE发送的至少一个应答信息的总个数的比值得到第六数值,若第六数值大于预设的第六阈值,则第一UE的第一信息为等效NACK信息。
基站根据第一UE发送的至少一个应答信息中ACK信息所占的个数得到第七数值,若第七数值大于预设的第七阈值,则第一UE的第一信息为等效ACK信息。
基站根据第一UE发送的至少一个应答信息中NACK信息所占的个数得到第八数值,若第八数值大于预设的第八阈值,则第一UE的第一信息为等效NACK信息。
本实施例中,第五数值和第六数值的取值范围均为:大于等于0,小于等于1,第五阈值和第六阈值的取值范围均为:大于0小于1。其中,第五数值和第六数值可以相同也可以不同。第七数值和第八数值的取值范围均为大于等于0的整数,第七阈值和第八阈值的取值范围均为大于等于1的正整数,其中,第七阈值和第八阈值可以相同也可以不同。
本实施例中,基站根据每个UE发送的至少一个应答信息得到每个UE的等效应答信息,由于每个UE的应答信息可能不同,因此,基站得到的每个UE的第一信息也可能不同。
步骤303、基站根据第一UE的第一信息调整基站在第一信道上用于调度第一UE的退避窗口。
基站根据第一UE的第一信息调整基站在第一信道上用于调度第一UE的退避窗口,包括以下步骤中的至少一个:
若第一UE的第一信息为等效NACK信息,则基站增大基站在第一信道上用于调度第一UE的退避窗口,或者,基站保持基站在第一信道上用于调度第一UE的退避窗口不变且基站在第一时间内不调度第一UE。其中第一时间可以为预定义的一段时间长度。
若第一UE的第一信息为等效ACK信息,则基站减小基站在第一信道上用于调度第一UE的退避窗口,或者,基站保持基站在第一信道上用于调度第一UE的退避窗口不变。
由于每个UE的第一信息可能不同,因此,调整后的基站在第一信道上用于调度每个UE的退避窗口的可能不同。例如,对于有些UE基站可 能增大了基站在第一信道上用于调度该UE的退避窗口,对于有些UE基站可能减小了基站在第一信道上用于调度该UE的退避窗口,对于有些UE基站可能保持基站在第一信道上用于调度该UE的退避窗口不变。
本实施例中,基站接收至少一个UE发送的至少一个应答信息,基站根据至少一个UE中第一UE发送的至少一个应答信息获取第一UE的第一信息,根据第一UE的第一信息调整基站在第一信道上用于调度第一UE的退避窗口。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
图4为本发明实施例四提供的退避窗口的调整方法的流程图,本实施例中,第二信息为UE发送的应答信息和PMI信息,如图4所示,本实施例提供的方法可以包括以下步骤:
步骤401、基站接收至少一个UE发送的至少一个应答信息和至少一个PMI信息。
其中,至少一个PMI信息用于指示至少一个PMI指示方向。本步骤的基站接收至少一个UE发送的至少一个应答信息的具体实现方式可参照实施例二中步骤201的相关描述,这里不再赘述。
步骤402、基站根据至少一个PMI信息所指示的至少一个PMI方向上的第一PMI指示方向上的至少一个应答信息获取第一PMI指示方向的第一信息,第一PMI指示方向为至少一个PMI指示方向中的任一PMI指示方向。
基站根据至少一个PMI信息所指示的至少一个PMI方向上的第一PMI指示方向上的至少一个应答信息获取第一PMI指示方向的第一信息,包括以下步骤中的至少一个:
基站根据第一PMI指示方向上的至少一个应答信息中ACK信息所占的个数与第一PMI指示方向上的至少一个应答信息的总个数的比值得到第九数值,若第九数值大于预设的第九阈值,则第一PMI指示方向上的第一信息为等效ACK信息。
基站根据第一PMI指示方向上的至少一个应答信息中NACK信息所占的个数与第一PMI指示方向上的至少一个应答信息的总个数的比值得 到第十数值,若第十数值大于预设的第十阈值,则第一PMI指示方向上的第一信息为等效NACK信息。
基站根据第一PMI指示方向上的至少一个应答信息中ACK信息所占的个数得到第十一数值,若第十一数值大于预设的第十一阈值,则第一PMI指示方向的第一信息为等效ACK信息。
基站根据第一PMI指示方向上的至少一个应答信息中NACK信息所占的个数得到第十二数值,若第十二数值大于预设的第十二阈值,则第一PMI指示方向上第一信息为等效NACK信息。
本实施例中,第九数值和第十数值的取值范围均为:大于等于0,小于等于1,第九阈值和第十阈值的取值范围均为:大于0小于1。其中,第九数值和第十数值可以相同也可以不同。第十一数值和第十二数值的取值范围均为大于等于0的整数,第十一阈值和第十二阈值的取值范围均为大于等于1的正整数,其中,第十一阈值和第十二阈值可以相同也可以不同。
需要说明的是,对于同一个UE来说,当其以空间复用的模式进行数据传输时,可能有不止一个PMI方向。对于不同秩的PMI,可能预编码矩阵不同,但指示的方向相同。实施例中的PMI指示方向相同,可以是指示方向完全相同,也可以是在一定误差范围内的指示方向相同。
步骤403、基站根据第一PMI指示方向的第一信息调整基站在第一信道上用于调度第一PMI指示方向上的UE的退避窗口。
基站根据第一PMI指示方向的第一信息调整基站在第一信道上用于调度第一PMI指示方向上的UE的退避窗口,包括以下步骤中的至少一个:
若第一PMI指示方向的第一信息为等效NACK信息,则基站增大基站在第一信道上用于调度第一PMI指示方向上的UE的退避窗口,或者,基站保持基站在第一信道上用于调度第一PMI指示方向上的UE的退避窗口不变且基站在第二时间内不调度第一PMI指示方向上的UE。其中第二时间可以为预定义的一段时间长度。
若第一PMI指示方向的第一信息为为等效ACK信息,则基站减小基站在第一信道上用于调度第一PMI指示方向上的UE的退避窗口,或者,基站保持基站在第一信道上用于调度第一PMI指示方向上的UE的退避窗 口不变。
本实施例中,由于每个PMI指示方向的第一信息不同,因此,调整后的基站在第一信道上用于调度每个PMI指示方向上的UE的退避窗口不同。例如,对于有些PMI指示方向,基站可能增大了基站在第一信道上用于调度该PMI指示方向上的UE的退避窗口,对于有些PMI指示方向,基站可能减小了基站在第一信道上用于调度该PMI指示方向上的UE的退避窗口,对于有些PMI指示方向,基站可能保持基站在第一信道上调度该PMI指示方向上的UE的退避窗口不变。
本实施例中,基站接收至少一个UE发送的至少一个应答信息和至少一个PMI信息,根据至少一个PMI信息所指示的至少一个PMI方向上的第一PMI指示方向上的至少一个应答信息获取第一PMI指示方向的第一信息,根据第一PMI指示方向的第一信息调整基站在第一信道上用于调度第一PMI指示方向上的UE的退避窗口。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
图5为本发明实施例五提供的退避窗口的调整方法的流程图,本实施例中,第二信息为UE发送的冲突信息,如图5所示,本实施例提供的方法可以包括以下步骤:
步骤501、基站接收至少一个UE发送的至少一个冲突信息。
冲突信息用于指示基站与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突。本实施例中,由UE进行信道冲突检测,当UE检测到基站与WI-FI系统或LAA系统或其他系统在第一信道上冲突后,UE会向基站发送冲突信息。
步骤502、基站根据至少一个UE发送的至少一个冲突信息获取第一信息。
本实施例中,第一信息为等效冲突信息,等效冲突信息包括等效冲突或等效不冲突,基站根据至少一个UE发送的至少一个冲突信息获取第一信息,包括以下步骤中的至少一个:
基站根据至少一个冲突信息中指示不冲突信息所占的个数与至少一个冲突信息的总个数的比值得到第十三数值,若第十三数值大于预设的第 十三阈值,则第一信息为等效不冲突。
基站根据至少一个冲突信息中指示冲突信息所占的个数与至少一个冲突信息的总个数的比值得到第十四数值,若第十四数值大于预设的第十四阈值,则第一信息为等效冲突。
基站根据至少一个冲突信息中指示不冲突信息所占的个数得到第十五数值,若第十五数值大于预设的第十五阈值,则第一信息为等效不冲突;
基站根据至少一个冲突信息中指示冲突信息所占的个数得到第十六数值,若第十六数值大于预设的第十六阈值,则第一信息为等效冲突。
本实施例中,第十三数值和第十四数值的取值范围均为:大于等于0,小于等于1,第十三阈值和第十四阈值的取值范围均为大于0小于1,其中,第十三阈值和第十四阈值可以相同也可以不同。第十五数值和第十六数值的取值范围均为大于等于0的整数,第十五阈值和第十六阈值的取值范围均为大于等于1的正整数,其中,第十五阈值和第十六阈值可以相同也可以不同。
步骤503、基站根据第一信息调整退避窗口。
基站根据第一信息调整退避窗口,包括以下步骤中的至少一个:若第一信息为等效冲突,则基站增大基站在第一信道上的退避窗口。若第一信息为等效不冲突,则基站减小基站在第一信道上的退避窗口,或者,基站保持基站在第一信道上的退避窗口不变。
本实施例中,基站接收至少一个UE发送的至少一个冲突信息,根据至少一个UE发送的至少一个冲突信息获取第一信息,根据第一信息调整基站在第一信道上的退避窗口的长度。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
图6为本发明实施例六提供的退避窗口的调整方法的流程图,本实施例中,第二信息为UE发送的应答信息,如图6所示,本实施例提供的方法可以包括以下步骤:
步骤601、基站接收至少一个UE发送的至少一个应答信息。
步骤602、基站根据至少一个UE中的第一UE发送的应答信息得到第一UE的ARQ和/或HARQ的重传次数信息。
第一UE的ARQ和/或HARQ的重传次数为第一信息。
步骤603、基站根据第一UE的ARQ和/或HARQ的重传次数调整基站在第一信道上的退避窗口。
基站根据第一UE的ARQ和/或HARQ的重传次数调整基站在第一信道上的退避窗口,包括以下步骤中的至少一个:
若第一UE的ARQ和/或HARQ的重传次数大于预设的第十七阈值,则基站增大基站在第一信道上的退避窗口。
若第一UE的ARQ和/或HARQ的重传次数小于预设的第十八阈值,则基站减小基站在第一信道上的退避窗口,或者,基站保持基站在第一信道上的退避窗口不变。
本实施例中,基站接收至少一个UE发送的至少一个应答信息,根据至少一个UE中的第一UE发送的应答信息得到第一UE的ARQ和/或HARQ的重传次数信息,根据第一UE的ARQ和/或HARQ的重传次数调整基站在第一信道上的退避窗口的长度。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
图7为本发明实施例七提供的退避窗口的调整方法的流程图,本实施例中以基站根据第一信道的CCA结果获取第一信息为例进行说明,如图7所示,本实施例提供的方法可以包括以下步骤:
步骤701、基站在第一信道上进行CCA检测,获取第一信道上的空闲时间信息和第一信道的CCA检测总时间。
基站在每个检测时间内检测第一信道是否空闲,得到每个检测时间内第一信道的空闲情况。
步骤702、基站根据第一信道的空闲时间与第一信道的CCA检测总时间的比值得到第十七数值,该第十七数值为第一信息。
具体地,基站根据CCA检测确定第一信道的空闲时间,将该第一信道的空闲时间与第一信道的CCA检测总时间的比值作为第十七数值。
或者,基站根据第一信道的空闲时间信息从所有空闲时间中找到连续空闲时间,连续空闲时间是指一个或多个相邻检测时间都空闲的时间。在CCA检测总时间中可能会有多个连续空闲时间,基站从多个连续空闲时间 中确定最大值,将该最大值与CCA检测总时间的比值作为第十七数值。例如,CCA检测总时间为500us,CCA检测总时间内共有两段连续空闲时间,第一段连续空闲时间为60us,第二段连续空闲时间为100us,那么基站用第二段连续空闲时间与CCA检测总时间的比值作为第十七数值。
步骤703、基站根据计算得到的第十七数值调整基站在第一信道上的退避窗口。
基站根据计算得到的第十七数值调整基站在第一信道上的退避窗口的长度,包括以下步骤中的至少一个:
若第十七数值小于预设的第十九阈值,则基站增大基站在第一信道上的退避窗口;若第十七数值大于预设的第二十阈值,则基站减小基站在第一信道上的退避窗口,或者,基站保持基站在第一信道上的退避窗口不变。
本实施例中,第十七数值的取值范围为大于等于0小于等于1,第十九阈值和第二十阈值的取值范围为大于0小于1。
需要说明的是,本实施例的一个特例是基站在第一信道上进行CCA检测,获取第一信道上的空闲时间信息,基站仅根据空闲时间的长度调整基站在第一信道上的退避窗口,包括以下步骤中的至少一个:
若空闲时间长度小于预设的时间长度,则基站增大基站在第一信道上的退避窗口;若空闲时间长度大于预设的另一时间长度,则基站减小基站在第一信道上的退避窗口,或者,基站保持基站在第一信道上的退避窗口不变。
本实施例中,基站对第一信道进行CCA检测,获取第一信道的空闲时间信息和第一信道的CCA检测总时间,根据第一信道的空闲时间信息与第一信道的CCA检测总时间的比值调整基站在第一信道上的退避窗口的长度。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
图8为本发明实施例八提供的退避窗口的调整方法的流程图,本实施例中以基站根据第一信道上的CCA结果获取第一信息为例进行说明,如图8所示,本实施例提供的方法可以包括以下步骤:
步骤801、基站在第一信道上以CCA时隙为单位进行CCA检测,获 取第一信道的空闲CCA时隙个数信息,其中,CCA时隙为预定义的时间长度。
假设基站当前时刻在第一信道上的退避窗口长度共包括M个CCA时隙,基站在进行退避过程前,首先需要生成0到M之间的一个随机数N,然后检测M个CCA时隙上第一信道的空闲情况,获取第一信道空闲CCA时隙个数信息。
步骤802、基站根据第一信道的空闲CCA时隙个数信息调整基站在第一信道上的退避窗口的长度。
基站在第一信道上每检测到一个的空闲CCA时隙,即从生成的随机数N中减去1,当随机数N被减为0时,基站可以发送数据。在这个过程中,基站判断在第一信道的M个CCA时隙上是否检测到了至少N个空闲CCA时隙。所述至少N个空闲CCA时隙可以是不连续的,也可以是连续的。
基站根据第一信道的空闲CCA时隙个数信息调整基站在第一信道上的退避窗口的长度,包括以下步骤中的至少一个:
若基站在第一信道上的M个CCA时隙的时间长度内没有检测到N个空闲CCA时隙,则基站增大基站在第一信道上的退避窗口。
若基站在第一信道上的M个CCA时隙的时间长度内检测到至少N个空闲CCA时隙,则基站减小基站在第一信道上的退避窗口,或者,基站保持基站在第一信道上的退避窗口不变。
本实施例中,基站在第一信道上以CCA时隙为单位进行CCA检测,获取第一信道的空闲CCA时隙个数信息,根据第一信道的空闲CCA时隙个数信息调整基站在第一信道上的退避窗口。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
图9为本发明实施例九提供的退避窗口的调整方法的流程图,本实施例中以基站根据第一信道上的系统冲突检测结果获取第一信道上的退避窗口长度调整的触发条件为例进行说明,如图9所示,本实施例提供的方法可以包括以下步骤:
步骤901、基站在第一信道上检测WIFI系统或LAA系统或其他系统 的信号,获得基站与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突的信息。
若基站在第一信道上检测到了WIFI系统或LAA系统或其他系统的信号,则说明基站与WI-FI系统或LAA系统或其他系统在第一信道上冲突,若基站在第一信道上没有检测到WIFI系统或LAA系统或其他系统的信号,则说明基站与WI-FI系统或LAA系统或其他系统在第一信道上不冲突。
步骤902、基站根据获得基站与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突的信息,调整基站在第一信道上的退避窗口。
具体包括以下步骤中的至少一个:
若基站与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突的信息指示系统冲突,则基站增大基站在第一信道上的退避窗口。
若基站与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突的信息指示系统不冲突,则基站减小基站在第一信道上的退避窗口,或者,基站保持基站在第一信道上的退避窗口不变。
本实施例中,基站在第一信道上检测WIFI系统或LAA系统或其他系统的信号,获得基站与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突的信息,根据获得基站与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突的信息,调整基站在第一信道上的退避窗口的长度。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
基站除了通过上述实施例一至实施例九的方法调整基站在第一信道上的退避窗口的长度外,基站还可以通过以下方式调整:基站判断基站在第一信道上的退避窗口的长度是否达到最大长度,并且在达到最大长度之后是否保持P次,若基站在第一信道上的退避窗口的长度达到最大长度并保持P次,则基站减小基站在第一信道上的退避窗口,其中,P为不小于0的整数。
应理解,除了上述实施例中的方法调整基站在第一信道上的退避窗口的长度外,基站还可以通过以下方式调整:当基站在历史的第三时间内抢 占到较多的数据传输机会时,基站增大基站在第一信道上的退避窗口,使得邻区共享免许可频谱资源的设备获得较多的接入机会,以示对相邻共存系统(如Wi-Fi设备或其他LAA设备)的友好。所述第三时间可以是半静态配置的时间长度。
需要说明的是,当基站同时收到至少一个UE发送的至少一个应答信息和至少一个UE发送的冲突信息时,基站根据实施例二和实施例九描述的方法得到的第一信息包括等效应答信息和等效冲突信息。基站根据第一信息调整退避窗口,包括以下步骤中的至少一个:
若第一信息为等效NACK信息和/或等效冲突信息指示冲突,则基站增大基站在第一信道上的退避窗口;
若第一信息为等效ACK信息和/或等效冲突信息指示不冲突,则基站减小基站在第一信道上的退避窗口的长度,或者,基站保持基站在第一信道上的退避窗口不变。
上述实施例中是在下行数据传输过程中,基站如何调整退避窗口,以下实施例中将描述上行数据传输过程中UE如何调整自己在第一信道上的退避窗口的长度。
图10为本发明实施例十提供的退避窗口的调整方法的流程图,如图10所示,本实施例提供的方法可以包括以下步骤:
步骤1001、UE获取用于指示调整第一信道上的退避窗口的第一信息。
其中,UE获取用于指示调整第一信道上的退避窗口的第一信息,可以包括下述步骤中的至少一个:
UE根据基站发送的第二信息获取第一信息;
UE根据第一信道上的CCA结果获取第一信息;
UE根据第一信道上的系统冲突检测结果获取第一信息;
UE根据第一信道上的退避窗口长度是否达到最大长度获取第一信息。
其中,基站发送的第二信息可以为:应答信息或退避窗口调整指示信息。其中,应答信息包括ACK信息和/或NACK信息。退避窗口调整指示信息用于指示UE是否调整退避窗口长度。因此,第一信息可以为:等效应答信息或退避窗口调整指示信息,等效应答信息为等效ACK信息或等 效NACK信息,退避窗口调整指示信息指示退避窗口调整或者不调整。
步骤1002、UE根据第一信息调整UE在第一信道上的退避窗口。
本实施例中,UE调整UE在第一信道上的退避窗口包括以下三种情况:UE增大UE在第一信道上的退避窗口的长度,或者,UE减小UE在第一信道上的退避窗口的长度,或者,UE保持UE在第一信道上的退避窗口的长度不变。
需要说明的是,本实施例以及以下实施例中,UE具体可以通过如下方式增大退避窗口的长度:UE以指数增长的方式增加退避窗口;或者,UE以线性增长的方式增加退避窗口;或者,UE在预定义的退避窗口的长度集合中选择一个更大的长度;或者,UE将退避窗口增大为最大长度,或者UE以其他方式增大退避窗口。UE具体可以通过如下方式减小退避窗口:UE以指数衰减的方式减小退避窗口;或者,UE以线性的方式减小退避窗口;或者,UE在预定义的退避窗口的长度集合中选择一个更小的长度;或者,UE将退避窗口的长度回退为初始值,或者UE以其他方式减小退避窗口。
本实施例中,UE通过获取用于指示调整第一信道上的退避窗口的第一信息,根据第一信息调整UE在第一信道上的退避窗口的长度。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
下面采用几个具体的实施例,对图10所示方法实施例的技术方案进行详细说明。
图11为本发明实施例十一提供的退避窗口的调整方法的流程图,本实施例中,第二信息为UE发送的应答信息,如图11所示,本实施例提供的方法可以包括以下步骤:
步骤1101、UE接收基站发送的至少一个应答信息。
至少一个应答信息为基站对第一信道上传输的数据包的至少一个反馈信息,其中至少一个应答信息中的每个应答信息为ACK信息或者NACK信息。
步骤1102、UE根据至少一个应答信息获取第一信息。
步骤1103、UE根据第一信息调整UE在第一信道上的退避窗口。
具体可以包括以下步骤中的至少一个:
若至少一个应答信息中包括至少一个NACK信息,则UE增大UE在第一信道上的退避窗口。
若至少一个应答信息中包括至少一个ACK信息,则UE减小UE在第一信道上的退避窗口,或者,UE保持UE在第一信道上的退避窗口不变。
本实施例中,UE接收基站发送的至少一个应答信息,根据接收到至少一个应答信息获取第一信息,根据第一信息调整UE在第一信道上的退避窗口的长度。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
图12为本发明实施例十二提供的退避窗口的调整方法的流程图,本实施例中以UE根据第一信道的CCA结果获取第一信息为例进行说明,如图12所示,本实施例提供的方法可以包括以下步骤:
步骤1201、UE在第一信道上进行CCA检测,获取第一信道上的空闲时间信息和第一信道的CCA检测总时间。
步骤1202、UE根据第一信道的空闲时间与第一信道的CCA检测总时间的比值得到第十八数值,第十八数值为第一信息。
步骤1201和步骤1202的具体实现方式可以参照实施例七的相关描述,这里不再赘述,本实施例和实施例七的区别点在于:两个实施例的执行主体不同。
步骤1203、UE根据第一信息调整UE在第一信道上的退避窗口的长度。
具体包括以下步骤中的至少一个:
若第十八数值小于预设的第二十一阈值,则UE增大UE在第一信道上的退避窗口。
若第十八数值大于预设的第二十二阈值,则UE减小UE在第一信道上的退避窗口,或者,UE保持UE在第一信道上的退避窗口不变。
本实施例中,UE在第一信道上进行CCA检测,获取第一信道的空闲时间信息和第一信道的CCA检测总时间,根据第一信道的空闲时间信息 与第一信道的CCA检测总时间的比值得到第一信息,根据第一信息调整UE在第一信道上的退避窗口的长度。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
图13为本发明实施例十三提供的退避窗口的调整方法的流程图,本实施例中以UE根据第一信道上的CCA结果获取第一信息为例进行说明,如图13所示,本实施例提供的方法可以包括以下步骤:
步骤1301、UE在第一信道上以CCA时隙为单位进行CCA检测,获取第一信道的空闲CCA时隙个数信息,其中,CCA时隙为预定义的时间长度。
步骤1302、UE根据第一信道的空闲CCA时隙个数信息调整UE在第一信道上的退避窗口。
具体可以包括以下步骤中的至少一个:
若UE在第一信道上的M个CCA时隙的时间长度内没有检测到N个空闲CCA时隙,则UE增大UE在第一信道上的退避窗口。
若UE在第一信道上的M个CCA时隙的时间长度内检测到N个空闲CCA时隙,则UE减小UE在第一信道上的退避窗口,或者,UE保持UE在第一信道上的退避窗口不变;其中M个CCA时隙的时间长度为当前UE在第一信道上的退避窗口长度,N为UE随机生成的0到M之间的随机数。
本实施例的具体实现方式可以参照实施例八的相关描述,这里不再赘述,本实施例和实施例八的区别点在于:两个实施例的执行主体不同。
本实施例中,UE在第一信道上以CCA时隙为单位进行CCA检测,获取第一信道的空闲CCA时隙个数信息,根据第一信道的空闲CCA时隙个数信息调整UE在第一信道上的退避窗口的长度。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
图14为本发明实施例十四提供的退避窗口的调整方法的流程图,本实施例中以UE根据第一信道上的系统冲突检测结果获取第一信息为例进行说明,如图14所示,本实施例提供的方法可以包括以下步骤:
步骤1401、UE在第一信道上检测WI-FI系统或LAA系统或其他系统的信号,获得UE与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突的信息。
若UE在第一信道上检测到了WI-FI系统或LAA系统或其他系统的信号,则UE确定UE与WI-FI系统或LAA系统或其他系统在第一信道上冲突,若UE在第一信道上没有检测到WI-FI系统或LAA系统或其他系统的信号,则UE确定UE与WI-FI系统或LAA系统或其他系统在第一信道上不冲突。
步骤1402、UE根据UE与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突的信息,调整UE在第一信道上的退避窗口。
具体可以包括以下步骤中的至少一个:
若UE与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突的信息指示系统冲突,则UE增大UE在第一信道上的退避窗口。
若UE与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突的信息指示系统不冲突,则UE减小UE在第一信道上的退避窗口,或者,UE保持UE在第一信道上的退避窗口不变。
本实施例中,UE在第一信道上检测到了WIFI系统或其他LAA系统的信号,说明第一信道受到了WIFI系统或其他LAA系统的信号的干扰,这时,UE增大UE在第一信道上的退避窗口,能够避免UE发送的上行数据受到干扰。
本实施例中,UE在第一信道上检测WI-FI系统或LAA系统或其他系统的信号,获得UE与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突的信息,根据UE与WI-FI系统或LAA系统或其他系统在第一信道上是否冲突的信息调整UE在第一信道上的退避窗口。当LAA系统和WIFI系统共存时,LAA系统和WIFI系统都会调整自己的退避窗口,从而使得WIFI系统和LAA系统在信道冲突后,二者能够公平的竞争信道资源。
UE除了通过上述实施例十至实施例十四的方法调整UE在第一信道上的退避窗口的长度外,UE还可以通过以下方式调整:UE判断UE在第一信道上的退避窗口的长度是否达到最大长度且在达到最大长度后是否 保持P次,若UE在第一信道上的退避窗口的长度达到最大长度并保持P次,则UE减小UE在第一信道上的退避窗口,其中,P为不小于0的整数。
图15为发明实施例十五提供的一种基站的结构示意图,如图15所示,本实施例提供的基站包括:获取模块11和调整模块12。
其中,获取模块11,用于获取用于指示调整第一信道上的退避窗口的第一信息;
调整模块12,用于根据所述第一信息调整所述退避窗口;
其中,所述获取模块11获取所述第一信息包括下述步骤中的至少一个:
根据至少一个UE发送的第二信息获取所述第一信息;
根据第一信道上的CCA结果获取所述第一信息;
根据第一信道上的系统冲突检测结果获取所述第一信息;
根据第一信道上的退避窗口长度是否达到最大长度获取所述第一信息。
本实施例提供的基站可用于执行实施例一的方法,具体实现方式和技术效果类似,这里不再赘述。
图16为发明实施例十六提供的一种基站的结构示意图,如图16所示,本实施例提供的基站在图15所示的基础上还包括:接收模块13,本实施例中,第二信息为应答信息。
其中,接收模块13,用于接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为ACK信息或者NACK信息;
所述获取模块11根据至少一个1UE发送的第二信息获取所述第一信息,包括:根据所述至少一个UE发送的所述至少一个应答信息获取所述第一信息。
所述调整模块12根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:若所述第一信息为等效NACK信息,则增大所述基站在所述第一信道上的退避窗口;若所述第一信息为等效ACK信息,则减小 所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
本实施例中,所述获取模块11根据所述至少一个UE发送的所述至少一个应答信息获取所述第一信息,可以包括以下步骤中的至少一个:
根据所述至少一个应答信息中ACK信息所占的个数与所述至少一个应答信息的总个数的比值得到第一数值,若所述第一数值大于预设的第一阈值,则所述第一信息为等效ACK信息。
根据所述至少一个应答信息中NACK信息所占的个数与所述至少一个应答信息的总个数的比值得到第二数值,若所述第二数值大于预设的第二阈值,则所述第一信息为等效NACK信息。
根据所述至少一个应答信息中ACK信息所占的个数得到第三数值,若所述第三数值大于预设的第三阈值,则所述第一信息为等效ACK信。
根据所述至少一个应答信息中NACK信息所占的个数得到第四数值,若所述第四数值大于预设的第四阈值,则所述第一信息为等效NACK信息。
本实施例提供的基站可用于执行实施例二的方法,具体实现方式和技术效果类似,这里不再赘述。
本发明实施例十七提供一种基站,本实施例提供的基站的结构与图16所示的基站相同,请参照图16,本实施例中,接收模块13,用于接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为ACK信息或者NACK信息;
所述获取模块11根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:根据所述至少一个UE中第一UE发送的至少一个应答信息获取所述第一UE的第一信息,所述第一UE为所述至少一个UE中的任一UE。
所述调整模块12根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第一UE的第一信息为等效NACK信息,则增大所述基站在所 述第一信道上用于调度所述第一UE的退避窗口,或者,保持所述基站在所述第一信道上用于调度所述第一UE的退避窗口不变且在第一时间内不调度所述第一UE。
若所述第一UE的第一信息为等效ACK信息,则减小所述基站在所述第一信道上用于调度所述第一UE的退避窗口,或者,保持所述基站在所述第一信道上用于调度所述第一UE的退避窗口不变。
其中,所述获取模块11根据所述至少一个UE中的第一UE发送的至少一个应答信息获取所述第一UE的第一信息,包括以下步骤中的至少一个:
根据所述第一UE发送的至少一个应答信息中ACK信息所占的个数与所述第一UE发送的至少一个应答信息的总个数的比值得到第五数值,若所述第五数值大于预设的第五阈值,则所述第一UE的第一信息为等效ACK信息。
根据所述第一UE发送的至少一个应答信息中NACK信息所占的个数与所述第一UE发送的至少一个应答信息的总个数的比值得到第六数值,若所述第六数值大于预设的第六阈值,则所述第一UE的第一信息为等效NACK信息。
根据所述第一UE发送的至少一个应答信息中ACK信息所占的个数得到第七数值,若所述第七数值大于预设的第七阈值,则所述第一UE的第一信息为等效ACK信息。
根据所述第一UE发送的至少一个应答信息中NACK信息所占的个数得到第八数值,若所述第八数值大于预设的第八阈值,则所述第一UE的第一信息为等效NACK信息。
本实施例提供的基站可用于执行实施例三的方法,具体实现方式和技术效果类似,这里不再赘述。
本发明实施例十八提供一种基站,本实施例提供的基站的结构与图16所示的基站相同,请参照图16,本实施例中,所述第二信息为应答信息和预编码矩阵指示PMI信息,接收模块13,用于接收所述至少一个UE发送的至少一个应答信息和至少一个PMI信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息, 所述至少一个应答信息中的每个应答信息为ACK信息或者NACK信息,所述至少一个PMI信息用于指示至少一个PMI指示方向。
所述获取模块11根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:根据所述至少一个PMI信息所指示的至少一个PMI方向上的第一PMI指示方向上的至少一个应答信息获取所述第一PMI指示方向的第一信息,所述第一PMI指示方向为所述至少一个PMI指示方向中的任一PMI指示方向。
所述调整模块12根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
若所述第一PMI指示方向的第一信息为等效NACK信息,则增大所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口,或者,保持所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口不变且在第二时间内不调度所述第一PMI指示方向上的UE;
若所述第一PMI指示方向的第一信息为等效ACK信息,则减小所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口,或者,保持所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口不变。
其中,所述获取模块11根据所述至少一个PMI信息所指示的至少一个PMI方向上的第一PMI指示方向上的至少一个应答信息获取所述第一PMI指示方向的第一信息,包括以下步骤中的至少一个:
根据所述第一PMI指示方向上的至少一个应答信息中ACK信息所占的个数与所述第一PMI指示方向上的至少一个应答信息的总个数的比值得到第九数值,若所述第九数值大于预设的第九阈值,则所述第一PMI指示方向上的第一信息为等效ACK信息;
根据所述第一PMI指示方向上的至少一个应答信息中NACK信息所占的个数与所述第一PMI指示方向上的至少一个应答信息的总个数的比值得到第十数值,若所述第十数值大于预设的第十阈值,则所述第一PMI指示方向上的第一信息为等效NACK信息;
根据所述第一PMI指示方向上的至少一个应答信息中ACK信息所占 的个数得到第十一数值,若所述第十一数值大于预设的第十一阈值,则所述第一PMI指示方向的第一信息为等效ACK信息;
根据所述第一PMI指示方向上的至少一个应答信息中NACK信息所占的个数得到第十二数值,若所述第十二数值大于预设的第十二阈值,则所述第一PMI指示方向上第一信息为等效NACK信息。
本实施例提供的基站可用于执行实施例四的方法,具体实现方式和技术效果类似,这里不再赘述。
本发明实施例十九提供一种基站,本实施例提供的基站的结构与图16所示的基站相同,请参照图16,本实施例中,所述第二信息为冲突信息,接收模块13,用于接收所述至少一个UE发送的至少一个冲突信息,所述冲突信息用于指示所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突。
所述获取模块11根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:根据所述至少一个UE发送的所述至少一个冲突信息获取所述第一信息。
所述调整模块12根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:若所述第一信息为等效冲突,则增大所述基站在所述第一信道上的退避窗口;若所述第一信息为等效不冲突,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
其中,所述获取模块11根据所述至少一个UE发送的所述至少一个冲突信息获取所述第一信息,包括以下步骤中的至少一个:
根据所述至少一个冲突信息中指示不冲突信息所占的个数与所述至少一个冲突信息的总个数的比值得到第十三数值,若所述第十三数值大于预设的第十三阈值,则所述第一信息为等效不冲突;
根据所述至少一个冲突信息中指示冲突信息所占的个数与所述至少一个冲突信息的总个数的比值得到第十四数值,若所述第十四数值大于预设的第十四阈值,则所述第一信息为等效冲突;
根据所述至少一个冲突信息中指示不冲突信息所占的个数得到第十五数值,若所述第十五数值大于预设的第十五阈值,则所述第一信息为等 效不冲突;
根据所述至少一个冲突信息中指示冲突信息所占的个数得到第十六数值,若所述第十六数值大于预设的第十六阈值,则所述第一信息为等效冲突。
本实施例提供的基站可用于执行实施例五的方法,具体实现方式和技术效果类似,这里不再赘述。
本发明实施例二十提供一种基站,本实施例提供的基站的结构与图16所示的基站相同,请参照图16,本实施例中,所述第二信息为应答信息,接收模块13,用于接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为ACK信息或者NACK信息;
所述获取模块11根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:根据所述至少一个UE中第一UE发送的应答信息得到所述第一UE的ARQ和/或HARQ的重传次数信息,所述第一UE的ARQ和/或HARQ的重传次数为所述第一信息;
所述调整模块12根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:若所述第一UE的ARQ和/或HARQ的重传次数大于预设的第十七阈值,则增大所述基站在所述第一信道上的退避窗口;若所述第一UE的ARQ和/或HARQ的重传次数小于预设的第十八阈值,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
本实施例提供的基站可用于执行实施例六的方法,具体实现方式和技术效果类似,这里不再赘述。
本发明实施例二十一提供一种基站,本实施例提供的基站的结构与图15所示的基站相同,请参照图15,本实施例中,所述获取模块11根据第一信道上的CCA结果获取所述第一信息,包括:在第一信道上进行CCA检测,获取所述第一信道上的空闲时间信息和所述第一信道的CCA检测总时间;根据所述第一信道的空闲时间与所述第一信道的CCA检测总时间的比值得到第十七数值,所述第十七数值为所述第一信息。
所述调整模块12根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:若所述第十七数值小于预设的第十九阈值,则增大所述基站在所述第一信道上的退避窗口;若所述第十七数值大于预设的第二十阈值,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
本实施例提供的基站可用于执行实施例七的方法,具体实现方式和技术效果类似,这里不再赘述。
本发明实施例二十二提供一种基站,本实施例提供的基站的结构与图15所示的基站相同,请参照图15,本实施例中,所述获取模块11根据第一信道上的CCA结果获取所述第一信息,包括:在第一信道上以CCA时隙为单位进行CCA检测,获取所述第一信道的空闲CCA时隙个数信息,其中,所述CCA时隙为预定义的时间长度,所述第一信道的空闲CCA时隙个数信息为所述第一信息。
所述调整模块12根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:若在所述第一信道上的M个CCA时隙的时间长度内没有检测到N个空闲CCA时隙,则增大所述基站在所述第一信道上的退避窗口;若在所述第一信道上的M个CCA时隙的时间长度内检测到至少N个空闲CCA时隙,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变;其中,所述M个CCA时隙的时间长度为所述基站当前时刻在所述第一信道上的退避窗口长度,N为基站在进行CCA检测前随机生成的0到M之间的随机数。
本实施例提供的基站可用于执行实施例八的方法,具体实现方式和技术效果类似,这里不再赘述。
本发明实施例二十三提供一种基站,本实施例提供的基站的结构与图15所示的基站相同,请参照图15,本实施例中,所述获取模块11根据第一信道上的系统冲突检测结果获取所述第一信息,包括:在第一信道上检测WI-FI系统或LAA系统或其他系统的信号,获得所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息,所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息为所述第一信息。
所述调整模块12根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:若所述第一信息指示系统冲突,则增大所述基站在所述第一信道上的退避窗口;若所述第一信息指示系统不冲突,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
本实施例提供的基站可用于执行实施例九的方法,具体实现方式和技术效果类似,这里不再赘述。
在实施例十五的基础上,所述获取模块11根据第一信道上的退避窗口长度是否达到最大长度获取所述第一信息,包括:确定所述基站在所述第一信道上的退避窗口的长度达到所述最大长度;所述调整模块12根据所述第一信息调整所述退避窗口,包括:若所述基站在所述第一信道上的退避窗口的长度达到所述最大长度并保持P次,则减小所述基站在所述第一信道上的退避窗口,其中,P为不小于0的整数。
图17为本发明实施例二十四提供的一种UE的结构示意图,如图17所示,本实施例提供的UE包括:获取模块21和调整模块22。
其中,获取模块21,用于获取用于指示调整第一信道上的退避窗口的第一信息,其中,所述获取模块获取所述第一信息包括下述步骤中的至少一个:
根据基站发送的第二信息获取所述第一信息;
根据所述第一信道上的空闲信道评测CCA结果获取所述第一信息;
根据所述第一信道上的系统冲突检测结果获取所述第一信息;
根据所述第一信道上的退避窗口长度是否达到最大长度获取所述第一信息。
调整模块22,用于根据所述第一信息调整所述UE在所述第一信道上的退避窗口。
本实施例提供的UE可用于执行实施例十的方法,具体实现方式和技术效果类似,这里不再赘述。
图18为本发明实施例二十五提供的一种UE的结构示意图,本实施例中,所述第二信息为应答信息,如图18所示,本实施例提供的UE在图17所示UE的结构基础上还包括:接收模块23。
接收模块23,用于接收所述基站发送的至少一个应答信息,所述至少一个应答信息为所述基站对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息.
所述获取模块21根据所述基站发送的第二信息获取所述第一信息,包括:根据所述至少一个应答信息获取所述第一信息。
所述调整模块22根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:若所述第一信息中包括至少一个NACK信息,则增大所述UE在所述第一信道上的退避窗口;若所述第一信息中包括至少一个ACK信息,则减小所述UE在所述第一信道上的退避窗口,或者,所述UE保持所述UE在所述第一信道上的退避窗口不变。
本实施例提供的UE可用于执行实施例十一的方法,具体实现方式和技术效果类似,这里不再赘述。
本发明实施例二十六提供一种UE,本实施例提供的UE的结构与图17所示的UE的结构相同,请参照图17,本实施例中,所述获取模块21根据所述第一信道上的CCA结果获取所述第一信息,包括:在所述第一信道上进行CCA检测,获取所述第一信道的空闲时间信息和所述第一信道的CCA检测总时间;根据所述第一信道的空闲时间与所述第一信道的CCA检测总时间的比值得到第十八数值,所述第十八数值为所述第一信息。
所述调整模块22根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:若所述第十八数值小于预设的第二十一阈值,则增大所述UE在所述第一信道上的退避窗口;若所述第十八数值大于预设的第二十二阈值,则减小所述UE在所述第一信道上的退避窗口,或者,保持所述UE在所述第一信道上的退避窗口不变。
本实施例提供的UE可用于执行实施例十二的方法,具体实现方式和技术效果类似,这里不再赘述。
本发明实施例二十七提供一种UE,本实施例提供的UE的结构与图17所示的UE的结构相同,请参照图17,本实施例中,所述获取模块21根据所述第一信道上的CCA结果获取所述第一信息,包括:在第一信道 上以CCA时隙为单位进行CCA检测,获取所述第一信道的空闲CCA时隙个数信息,其中,所述CCA时隙为预定义的时间长度,所述第一信道的空闲CCA时隙个数信息为所述第一信息。
所述调整模块22根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:若所述UE在所述第一信道上的M个CCA时隙的时间长度内没有检测到N个空闲CCA时隙,则增大所述UE在所述第一信道上的退避窗口;若所述UE在所述第一信道上的M个CCA时隙的时间长度内检测到N个空闲CCA时隙,则减小所述UE在所述第一信道上的退避窗口,或者,保持所述UE在所述第一信道上的退避窗口不变;其中M个CCA时隙的时间长度为当前所述UE在所述第一信道上的退避窗口长度,N为UE在进行CCA检测前随机生成的0到M之间的随机数。
本实施例提供的UE可用于执行实施例十三的方法,具体实现方式和技术效果类似,这里不再赘述。
本发明实施例二十八提供一种UE,本实施例提供的UE的结构与图17所示的UE的结构相同,请参照图17,本实施例中,所述获取模块21根据所述第一信道上的系统冲突检测结果获取所述第一信息,包括:在第一信道上检测WI-FI系统或LAA系统或其他系统的信号,获得所述UE与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息,所述UE与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息为所述第一信息。
所述调整模块22根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:若所述第一信息指示系统冲突,则增大所述UE在所述第一信道上的退避窗口;若所述第一信息指示系统不冲突,则减小所述UE在所述第一信道上的退避窗口,或者,保持所述UE在所述第一信道上的退避窗口不变。
本实施例提供的UE可用于执行实施例十四的方法,具体实现方式和技术效果类似,这里不再赘述。
在实施例二十四的基础上,所述获取模块21根据第一信道上的退避窗口长度是否达到最大长度获取所述第一信息,包括:确定所述UE在所 述第一信道上的退避窗口的长度达到所述最大长度;所述调整模块22根据所述第一信息调整所述退避窗口,包括:若所述UE在所述第一信道上的退避窗口的长度达到所述最大长度并保持P次,则减小所述UE在所述第一信道上的退避窗口,其中,P为不小于0的整数。
图19为本发明实施例二十九提供的基站的结构示意图,如图19所示,本实施例提供的基站300包括:处理器31、存储器32、通信接口33和系统总线34,所述存储器32和所述通信接口33通过所述系统总线34和所述处理器31连接并完成相互间的通信,所述存储器32,用于存储计算机执行指令;所述通信接口33用于和其他设备进行通信;所述处理器31,用于运行所述计算机执行指令,执行实施例一至实施例九的方法,具体实现方式和技术效果类似,这里不再赘述。
图20为本发明实施例三十提供的UE的结构示意图,如图20所示,本实施例提供的UE400包括:处理器41、存储器42、通信接口43和系统总线44,所述存储器42和所述通信接口43通过所述系统总线44和所述处理器41连接并完成相互间的通信,所述存储器42,用于存储计算机执行指令;所述通信接口43用于和其他设备进行通信;所述处理器41,用于运行所述计算机执行指令,执行实施例十至实施例十四的方法,具体实现方式和技术效果类似,这里不再赘述。
本领域普通技术人员可以理解:实现上述方法实施例的全部或部分步骤可以通过程序指令相关的硬件来完成,前述的程序可以存储于一计算机可读取存储介质中,该程序在执行时,执行包括上述方法实施例的步骤;而前述的存储介质包括:ROM、RAM、磁碟或者光盘等各种可以存储程序代码的介质。
最后应说明的是:以上各实施例仅用以说明本发明的技术方案,而非对其限制;尽管参照前述各实施例对本发明进行了详细的说明,本领域的普通技术人员应当理解:其依然可以对前述各实施例所记载的技术方案进行修改,或者对其中部分或者全部技术特征进行等同替换;而这些修改或者替换,并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (42)

  1. 一种退避窗口的调整方法,其特征在于,包括:
    基站获取用于指示调整第一信道上的退避窗口的第一信息;
    所述基站根据所述第一信息调整所述退避窗口;
    其中,所述基站获取所述第一信息包括下述步骤中的至少一个:
    所述基站根据至少一个用户设备UE发送的第二信息获取所述第一信息;
    所述基站根据第一信道上的空闲信道评测CCA结果获取所述第一信息;
    所述基站根据第一信道上的系统冲突检测结果获取所述第一信息;
    所述基站根据第一信道上的退避窗口长度是否达到最大长度获取所述第一信息。
  2. 根据权利要求1所述的方法,其特征在于,所述第二信息为应答信息,所述方法还包括:
    所述基站接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
    所述基站根据至少一个UE发送的第二信息获取所述第一信息,包括:
    所述基站根据所述至少一个UE发送的所述至少一个应答信息获取所述第一信息;
    所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第一信息为等效NACK信息,则所述基站增大所述基站在所述第一信道上的退避窗口;
    若所述第一信息为等效ACK信息,则所述基站减小所述基站在所述第一信道上的退避窗口,或者,所述基站保持所述基站在所述第一信道上的退避窗口不变。
  3. 根据权利要求2所述的方法,其特征在于,所述基站根据所述至少一个UE发送的所述至少一个应答信息获取所述第一信息,包括以下步 骤中的至少一个:
    所述基站根据所述至少一个应答信息中ACK信息所占的个数与所述至少一个应答信息的总个数的比值得到第一数值,若所述第一数值大于预设的第一阈值,则所述第一信息为等效ACK信息;
    所述基站根据所述至少一个应答信息中NACK信息所占的个数与所述至少一个应答信息的总个数的比值得到第二数值,若所述第二数值大于预设的第二阈值,则所述第一信息为等效NACK信息;
    所述基站根据所述至少一个应答信息中ACK信息所占的个数得到第三数值,若所述第三数值大于预设的第三阈值,则所述第一信息为等效ACK信息;
    所述基站根据所述至少一个应答信息中NACK信息所占的个数得到第四数值,若所述第四数值大于预设的第四阈值,则所述第一信息为等效NACK信息。
  4. 根据权利要求1所述的方法,其特征在于,所述第二信息为应答信息,所述方法还包括:
    所述基站接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
    所述基站根据至少一个UE发送的第二信息获取所述第一信息,包括:
    所述基站根据所述至少一个UE中第一UE发送的至少一个应答信息获取所述第一UE的第一信息,所述第一UE为所述至少一个UE中的任一UE;
    所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第一UE的第一信息为等效NACK信息,则所述基站增大所述基站在所述第一信道上用于调度所述第一UE的退避窗口,或者,所述基站保持所述基站在所述第一信道上用于调度所述第一UE的退避窗口不变且所述基站在第一时间内不调度所述第一UE;
    若所述第一UE的第一信息为等效ACK信息,则所述基站减小所述 基站在所述第一信道上用于调度所述第一UE的退避窗口,或者,所述基站保持所述基站在所述第一信道上用于调度所述第一UE的退避窗口不变。
  5. 根据权利要求4所述的方法,其特征在于,所述基站根据所述至少一个UE中第一UE发送的至少一个应答信息获取所述第一UE的第一信息,包括以下步骤中的至少一个:
    所述基站根据所述第一UE发送的至少一个应答信息中ACK信息所占的个数与所述第一UE发送的至少一个应答信息的总个数的比值得到第五数值,若所述第五数值大于预设的第五阈值,则所述第一UE的第一信息为等效ACK信息;
    所述基站根据所述第一UE发送的至少一个应答信息中NACK信息所占的个数与所述第一UE发送的至少一个应答信息的总个数的比值得到第六数值,若所述第六数值大于预设的第六阈值,则所述第一UE的第一信息为等效NACK信息;
    所述基站根据所述第一UE发送的至少一个应答信息中ACK信息所占的个数得到第七数值,若所述第七数值大于预设的第七阈值,则所述第一UE的第一信息为等效ACK信息;
    所述基站根据所述第一UE发送的至少一个应答信息中NACK信息所占的个数得到第八数值,若所述第八数值大于预设的第八阈值,则所述第一UE的第一信息为等效NACK信息。
  6. 根据权利要求1所述的方法,其特征在于,所述第二信息为应答信息和预编码矩阵指示PMI信息,所述方法还包括:
    所述基站接收所述至少一个UE发送的至少一个应答信息和至少一个PMI信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息,所述至少一个PMI信息用于指示至少一个PMI指示方向;
    所述基站根据至少一个UE发送的第二信息获取所述第一信息,包括:
    所述基站根据所述至少一个PMI信息所指示的至少一个PMI方向上的第一PMI指示方向上的至少一个应答信息获取所述第一PMI指示方向 的第一信息,所述第一PMI指示方向为所述至少一个PMI指示方向中的任一PMI指示方向;
    所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第一PMI指示方向的第一信息为等效NACK信息,则所述基站增大所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口,或者,所述基站保持所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口不变且所述基站在第二时间内不调度所述第一PMI指示方向上的UE;
    若所述第一PMI指示方向的第一信息为等效ACK信息,则所述基站减小所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口,或者,所述基站保持所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口不变。
  7. 根据权利要求6所述的方法,其特征在于,所述基站根据所述至少一个PMI信息所指示的至少一个PMI方向上的第一PMI指示方向上的至少一个应答信息获取所述第一PMI指示方向的第一信息,包括以下步骤中的至少一个:
    所述基站根据所述第一PMI指示方向上的至少一个应答信息中ACK信息所占的个数与所述第一PMI指示方向上的至少一个应答信息的总个数的比值得到第九数值,若所述第九数值大于预设的第九阈值,则所述第一PMI指示方向上的第一信息为等效ACK信息;
    所述基站根据所述第一PMI指示方向上的至少一个应答信息中NACK信息所占的个数与所述第一PMI指示方向上的至少一个应答信息的总个数的比值得到第十数值,若所述第十数值大于预设的第十阈值,则所述第一PMI指示方向上的第一信息为等效NACK信息;
    所述基站根据所述第一PMI指示方向上的至少一个应答信息中ACK信息所占的个数得到第十一数值,若所述第十一数值大于预设的第十一阈值,则所述第一PMI指示方向的第一信息为等效ACK信息;
    所述基站根据所述第一PMI指示方向上的至少一个应答信息中NACK信息所占的个数得到第十二数值,若所述第十二数值大于预设的第 十二阈值,则所述第一PMI指示方向上第一信息为等效NACK信息。
  8. 根据权利要求1所述的方法,其特征在于,所述第二信息为冲突信息,所述方法还包括:
    所述基站接收所述至少一个UE发送的至少一个冲突信息,所述冲突信息用于指示所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突;
    所述基站根据至少一个UE发送的第二信息获取所述第一信息,包括:
    所述基站根据所述至少一个UE发送的所述至少一个冲突信息获取所述第一信息;
    所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第一信息为等效冲突,则所述基站增大所述基站在所述第一信道上的退避窗口;
    若所述第一信息为等效不冲突,则所述基站减小所述基站在所述第一信道上的退避窗口,或者,所述基站保持所述基站在所述第一信道上的退避窗口不变。
  9. 根据权利要求8所述的方法,其特征在于,所述基站根据所述至少一个UE发送的所述至少一个冲突信息获取所述第一信息,包括以下步骤中的至少一个:
    所述基站根据所述至少一个冲突信息中指示不冲突信息所占的个数与所述至少一个冲突信息的总个数的比值得到第十三数值,若所述第十三数值大于预设的第十三阈值,则所述第一信息为等效不冲突;
    所述基站根据所述至少一个冲突信息中指示冲突信息所占的个数与所述至少一个冲突信息的总个数的比值得到第十四数值,若所述第十四数值大于预设的第十四阈值,则所述第一信息为等效冲突;
    所述基站根据所述至少一个冲突信息中指示不冲突信息所占的个数得到第十五数值,若所述第十五数值大于预设的第十五阈值,则所述第一信息为等效不冲突;
    所述基站根据所述至少一个冲突信息中指示冲突信息所占的个数得到第十六数值,若所述第十六数值大于预设的第十六阈值,则所述第一信 息为等效冲突。
  10. 根据权利要求1所述的方法,其特征在于,所述第二信息为应答信息,所述方法还包括:
    所述基站接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
    所述基站根据至少一个UE发送的第二信息获取所述第一信息,包括:
    所述基站根据所述至少一个UE中第一UE发送的应答信息得到所述第一UE的自动重传请求ARQ和/或混合自动重传请求HARQ的重传次数信息,所述第一UE的ARQ和/或HARQ的重传次数为所述第一信息;
    所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第一UE的ARQ和/或HARQ的重传次数大于预设的第十七阈值,则所述基站增大所述基站在所述第一信道上的退避窗口;
    若所述第一UE的ARQ和/或HARQ的重传次数小于预设的第十八阈值,则所述基站减小所述基站在所述第一信道上的退避窗口,或者,所述基站保持所述基站在所述第一信道上的退避窗口不变。
  11. 根据权利要求1所述的方法,其特征在于,所述基站根据第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
    所述基站在第一信道上进行CCA检测,获取所述第一信道上的空闲时间信息和所述第一信道的CCA检测总时间;
    所述基站根据所述第一信道的空闲时间与所述第一信道的CCA检测总时间的比值得到第十七数值,所述第十七数值为所述第一信息;
    所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第十七数值小于预设的第十九阈值,则所述基站增大所述基站在所述第一信道上的退避窗口;
    若所述第十七数值大于预设的第二十阈值,则所述基站减小所述基站在所述第一信道上的退避窗口,或者,所述基站保持所述基站在所述第一 信道上的退避窗口不变。
  12. 根据权利要求1所述的方法,其特征在于,所述基站根据第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
    所述基站在第一信道上以CCA时隙为单位进行CCA检测,获取所述第一信道的空闲CCA时隙个数信息,其中,所述CCA时隙为预定义的时间长度,所述第一信道的空闲CCA时隙个数信息为所述第一信息;
    所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述基站在所述第一信道上的M个CCA时隙的时间长度内没有检测到N个空闲CCA时隙,则所述基站增大所述基站在所述第一信道上的退避窗口;
    若所述基站在所述第一信道上的M个CCA时隙的时间长度内检测到至少N个空闲CCA时隙,则所述基站减小所述基站在所述第一信道上的退避窗口,或者,所述基站保持所述基站在所述第一信道上的退避窗口不变;
    其中,所述M个CCA时隙的时间长度为所述基站当前时刻在所述第一信道上的退避窗口长度,N为基站在进行CCA检测前随机生成的0到M之间的随机数。
  13. 根据权利要求1所述的方法,其特征在于,所述基站根据第一信道上的系统冲突检测结果获取所述第一信息,包括:
    所述基站在第一信道上检测WI-FI系统或LAA系统或其他系统的信号,获得所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息,所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息为所述第一信息;
    所述基站根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第一信息指示系统冲突,则所述基站增大所述基站在所述第一信道上的退避窗口;
    若所述第一信息指示系统不冲突,则所述基站减小所述基站在所述第一信道上的退避窗口,或者,所述基站保持所述基站在所述第一信道上的 退避窗口不变。
  14. 根据权利要求1所述的方法,其特征在于,所述基站根据第一信道上的退避窗口长度是否达到最大长度获取所述第一信息,包括:
    所述基站确定所述基站在所述第一信道上的退避窗口的长度达到所述最大长度;
    所述基站根据所述第一信息调整所述退避窗口,包括:
    若所述基站在所述第一信道上的退避窗口的长度达到所述最大长度并保持P次,则所述基站减小所述基站在所述第一信道上的退避窗口,其中,P为不小于0的整数。
  15. 一种退避窗口的调整方法,其特征在于,包括:
    用户设备UE获取用于指示调整第一信道上的退避窗口的第一信息;
    所述UE根据所述第一信息调整所述UE在所述第一信道上的退避窗口;
    其中,所述UE获取所述第一信息包括下述步骤中的至少一个:
    所述UE根据基站发送的第二信息获取所述第一信息;
    所述UE根据所述第一信道上的空闲信道评测CCA结果获取所述第一信息;
    所述UE根据所述第一信道上的系统冲突检测结果获取所述第一信息;
    所述UE根据所述第一信道上的退避窗口长度是否达到最大长度获取所述第一信息。
  16. 根据权利要求15所述的方法,其特征在于,所述第二信息为应答信息,所述方法还包括:
    所述UE接收所述基站发送的至少一个应答信息,所述至少一个应答信息为所述基站对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
    所述UE根据所述基站发送的第二信息获取所述第一信息,包括:
    所述UE根据所述至少一个应答信息获取所述第一信息;
    所述UE根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
    若所述第一信息中包括至少一个NACK信息,则所述UE增大所述UE在所述第一信道上的退避窗口;
    若所述第一信息中包括至少一个ACK信息,则所述UE减小所述UE在所述第一信道上的退避窗口,或者,所述UE保持所述UE在所述第一信道上的退避窗口不变。
  17. 根据权利要求15所述的方法,其特征在于,所述UE根据所述第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
    所述UE在所述第一信道上进行CCA检测,获取所述第一信道的空闲时间信息和所述第一信道的CCA检测总时间;
    所述UE根据所述第一信道的空闲时间与所述第一信道的CCA检测总时间的比值得到第十八数值,所述第十八数值为所述第一信息;
    所述UE根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
    若所述第十八数值小于预设的第二十一阈值,则所述UE增大所述UE在所述第一信道上的退避窗口;
    若所述第十八数值大于预设的第二十二阈值,则所述UE减小所述UE在所述第一信道上的退避窗口,或者,所述UE保持所述UE在所述第一信道上的退避窗口不变。
  18. 根据权利要求15所述的方法,其特征在于,所述UE根据所述第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
    所述UE在第一信道上以CCA时隙为单位进行CCA检测,获取所述第一信道的空闲CCA时隙个数信息,其中,所述CCA时隙为预定义的时间长度,所述第一信道的空闲CCA时隙个数信息为所述第一信息;
    所述UE根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
    若所述UE在所述第一信道上的M个CCA时隙的时间长度内没有检测到N个空闲CCA时隙,则所述UE增大所述UE在所述第一信道上的退避窗口;
    若所述UE在所述第一信道上的M个CCA时隙的时间长度内检测到N个空闲CCA时隙,则所述UE减小所述UE在所述第一信道上的退避窗 口,或者,所述UE保持所述UE在所述第一信道上的退避窗口不变;
    其中M个CCA时隙的时间长度为当前所述UE在所述第一信道上的退避窗口长度,N为UE在进行CCA检测前随机生成的0到M之间的随机数。
  19. 根据权利要求15所述的方法,其特征在于,所述UE根据所述第一信道上的系统冲突检测结果获取所述第一信息,包括:
    所述UE在第一信道上检测WI-FI系统或LAA系统或其他系统的信号,获得所述UE与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息,所述UE与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息为所述第一信息;
    所述UE根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
    若所述第一信息指示系统冲突,则所述UE增大所述UE在所述第一信道上的退避窗口;
    若所述第一信息指示系统不冲突,则所述UE减小所述UE在所述第一信道上的退避窗口,或者,所述UE保持所述UE在所述第一信道上的退避窗口不变。
  20. 根据权利要求15所述的方法,其特征在于,所述UE根据所述第一信道上的退避窗口长度是否达到最大长度获取所述第一信息,包括:
    所述UE判断所述UE在所述第一信道上的退避窗口的长度达到所述最大长度;
    所述UE根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括:
    若所述UE在所述第一信道上的退避窗口的长度达到所述最大长度并保持P次,则所述UE减小所述UE在所述第一信道上的退避窗口,其中,P为不小于0的整数。
  21. 一种基站,其特征在于,包括:
    获取模块,用于获取用于指示调整第一信道上的退避窗口的第一信息;
    调整模块,用于根据所述第一信息调整所述退避窗口;
    其中,所述获取模块获取所述第一信息包括下述步骤中的至少一个:
    根据至少一个用户设备UE发送的第二信息获取所述第一信息;
    根据第一信道上的空闲信道评测CCA结果获取所述第一信息;
    根据第一信道上的系统冲突检测结果获取所述第一信息;
    根据第一信道上的退避窗口长度是否达到最大长度获取所述第一信息。
  22. 根据权利要求21所述的基站,其特征在于,所述第二信息为应答信息,所述基站还包括:
    接收模块,用于接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
    所述获取模块根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:
    根据所述至少一个UE发送的所述至少一个应答信息获取所述第一信息;
    所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第一信息为等效NACK信息,则增大所述基站在所述第一信道上的退避窗口;
    若所述第一信息为等效ACK信息,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
  23. 根据权利要求22所述的基站,其特征在于,所述获取模块根据所述至少一个UE发送的所述至少一个应答信息获取所述第一信息,包括以下步骤中的至少一个:
    根据所述至少一个应答信息中ACK信息所占的个数与所述至少一个应答信息的总个数的比值得到第一数值,若所述第一数值大于预设的第一阈值,则所述第一信息为等效ACK信息;
    根据所述至少一个应答信息中NACK信息所占的个数与所述至少一个应答信息的总个数的比值得到第二数值,若所述第二数值大于预设的第 二阈值,则所述第一信息为等效NACK信息;
    根据所述至少一个应答信息中ACK信息所占的个数得到第三数值,若所述第三数值大于预设的第三阈值,则所述第一信息为等效ACK信息;
    根据所述至少一个应答信息中NACK信息所占的个数得到第四数值,若所述第四数值大于预设的第四阈值,则所述第一信息为等效NACK信息。
  24. 根据权利要求21所述的基站,其特征在于,所述第二信息为应答信息,所述基站还包括:
    接收模块,用于接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
    所述获取模块根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:根据所述至少一个UE中第一UE发送的至少一个应答信息获取所述第一UE的第一信息,所述第一UE为所述至少一个UE中的任一UE;
    所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第一UE的第一信息为等效NACK信息,则增大所述基站在所述第一信道上用于调度所述第一UE的退避窗口,或者,保持所述基站在所述第一信道上用于调度所述第一UE的退避窗口不变且在第一时间内不调度所述第一UE;
    若所述第一UE的第一信息为等效ACK信息,则减小所述基站在所述第一信道上用于调度所述第一UE的退避窗口,或者,保持所述基站在所述第一信道上用于调度所述第一UE的退避窗口不变。
  25. 根据权利要求24所述的基站,其特征在于,所述获取模块根据所述至少一个UE中的第一UE发送的至少一个应答信息获取所述第一UE的第一信息,包括以下步骤中的至少一个:
    根据所述第一UE发送的至少一个应答信息中ACK信息所占的个数与所述第一UE发送的至少一个应答信息的总个数的比值得到第五数值, 若所述第五数值大于预设的第五阈值,则所述第一UE的第一信息为等效ACK信息;
    根据所述第一UE发送的至少一个应答信息中NACK信息所占的个数与所述第一UE发送的至少一个应答信息的总个数的比值得到第六数值,若所述第六数值大于预设的第六阈值,则所述第一UE的第一信息为等效NACK信息;
    根据所述第一UE发送的至少一个应答信息中ACK信息所占的个数得到第七数值,若所述第七数值大于预设的第七阈值,则所述第一UE的第一信息为等效ACK信息;
    根据所述第一UE发送的至少一个应答信息中NACK信息所占的个数得到第八数值,若所述第八数值大于预设的第八阈值,则所述第一UE的第一信息为等效NACK信息。
  26. 根据权利要求21所述的基站,其特征在于,所述第二信息为应答信息和预编码矩阵指示PMI信息,所述基站还包括:
    接收模块,用于接收所述至少一个UE发送的至少一个应答信息和至少一个PMI信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息,所述至少一个PMI信息用于指示至少一个PMI指示方向;
    所述获取模块根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:根据所述至少一个PMI信息所指示的至少一个PMI方向上的第一PMI指示方向上的至少一个应答信息获取所述第一PMI指示方向的第一信息,所述第一PMI指示方向为所述至少一个PMI指示方向中的任一PMI指示方向;
    所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第一PMI指示方向的第一信息为等效NACK信息,则增大所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口,或者,保持所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口不变且在第二时间内不调度所述第一PMI指示方 向上的UE;
    若所述第一PMI指示方向的第一信息为等效ACK信息,则减小所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口,或者,保持所述基站在所述第一信道上用于调度所述第一PMI指示方向上的UE的退避窗口不变。
  27. 根据权利要求26所述的基站,其特征在于,所述获取模块根据所述至少一个PMI信息所指示的至少一个PMI方向上的第一PMI指示方向上的至少一个应答信息获取所述第一PMI指示方向的第一信息,包括以下步骤中的至少一个:
    根据所述第一PMI指示方向上的至少一个应答信息中ACK信息所占的个数与所述第一PMI指示方向上的至少一个应答信息的总个数的比值得到第九数值,若所述第九数值大于预设的第九阈值,则所述第一PMI指示方向上的第一信息为等效ACK信息;
    根据所述第一PMI指示方向上的至少一个应答信息中NACK信息所占的个数与所述第一PMI指示方向上的至少一个应答信息的总个数的比值得到第十数值,若所述第十数值大于预设的第十阈值,则所述第一PMI指示方向上的第一信息为等效NACK信息;
    根据所述第一PMI指示方向上的至少一个应答信息中ACK信息所占的个数得到第十一数值,若所述第十一数值大于预设的第十一阈值,则所述第一PMI指示方向的第一信息为等效ACK信息;
    根据所述第一PMI指示方向上的至少一个应答信息中NACK信息所占的个数得到第十二数值,若所述第十二数值大于预设的第十二阈值,则所述第一PMI指示方向上第一信息为等效NACK信息。
  28. 根据权利要求21所述的基站,其特征在于,所述第二信息为冲突信息,所述基站还包括:
    接收模块,用于接收所述至少一个UE发送的至少一个冲突信息,所述冲突信息用于指示所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突;
    所述获取模块根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:根据所述至少一个UE发送的所述至少一个冲突信息获取 所述第一信息;
    所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第一信息为等效冲突,则增大所述基站在所述第一信道上的退避窗口;
    若所述第一信息为等效不冲突,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
  29. 根据权利要求28所述的基站,其特征在于,所述获取模块根据所述至少一个UE发送的所述至少一个冲突信息获取所述第一信息,包括以下步骤中的至少一个:
    根据所述至少一个冲突信息中指示不冲突信息所占的个数与所述至少一个冲突信息的总个数的比值得到第十三数值,若所述第十三数值大于预设的第十三阈值,则所述第一信息为等效不冲突;
    根据所述至少一个冲突信息中指示冲突信息所占的个数与所述至少一个冲突信息的总个数的比值得到第十四数值,若所述第十四数值大于预设的第十四阈值,则所述第一信息为等效冲突;
    根据所述至少一个冲突信息中指示不冲突信息所占的个数得到第十五数值,若所述第十五数值大于预设的第十五阈值,则所述第一信息为等效不冲突;
    根据所述至少一个冲突信息中指示冲突信息所占的个数得到第十六数值,若所述第十六数值大于预设的第十六阈值,则所述第一信息为等效冲突。
  30. 根据权利要求21所述的基站,其特征在于,所述第二信息为应答信息,所述基站还包括:
    接收模块,用于接收所述至少一个UE发送的至少一个应答信息,所述至少一个应答信息为所述至少一个UE发送的对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
    所述获取模块根据至少一个用户设备UE发送的第二信息获取所述第一信息,包括:根据所述至少一个UE中第一UE发送的应答信息得到所 述第一UE的自动重传请求ARQ和/或混合自动重传请求HARQ的重传次数信息,所述第一UE的ARQ和/或HARQ的重传次数为所述第一信息;
    所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第一UE的ARQ和/或HARQ的重传次数大于预设的第十七阈值,则增大所述基站在所述第一信道上的退避窗口;
    若所述第一UE的ARQ和/或HARQ的重传次数小于预设的第十八阈值,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
  31. 根据权利要求21所述的基站,其特征在于,所述获取模块根据第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
    在第一信道上进行CCA检测,获取所述第一信道上的空闲时间信息和所述第一信道的CCA检测总时间;
    根据所述第一信道的空闲时间与所述第一信道的CCA检测总时间的比值得到第十七数值,所述第十七数值为所述第一信息;
    所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第十七数值小于预设的第十九阈值,则增大所述基站在所述第一信道上的退避窗口;
    若所述第十七数值大于预设的第二十阈值,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
  32. 根据权利要求21所述的基站,其特征在于,所述获取模块根据第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
    在第一信道上以CCA时隙为单位进行CCA检测,获取所述第一信道的空闲CCA时隙个数信息,其中,所述CCA时隙为预定义的时间长度,所述第一信道的空闲CCA时隙个数信息为所述第一信息;
    所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若在所述第一信道上的M个CCA时隙的时间长度内没有检测到N个 空闲CCA时隙,则增大所述基站在所述第一信道上的退避窗口;
    若在所述第一信道上的M个CCA时隙的时间长度内检测到至少N个空闲CCA时隙,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变;
    其中,所述M个CCA时隙的时间长度为所述基站当前时刻在所述第一信道上的退避窗口长度,N为基站在进行CCA检测前随机生成的0到M之间的随机数。
  33. 根据权利要求21所述的基站,其特征在于,所述获取模块根据第一信道上的系统冲突检测结果获取所述第一信息,包括:
    在第一信道上检测WI-FI系统或LAA系统或其他系统的信号,获得所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息,所述基站与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息为所述第一信息;
    所述调整模块根据所述第一信息调整所述退避窗口,包括以下步骤中的至少一个:
    若所述第一信息指示系统冲突,则增大所述基站在所述第一信道上的退避窗口;
    若所述第一信息指示系统不冲突,则减小所述基站在所述第一信道上的退避窗口,或者,保持所述基站在所述第一信道上的退避窗口不变。
  34. 根据权利要求21所述的基站,其特征在于,所述获取模块根据第一信道上的退避窗口长度是否达到最大长度获取所述第一信息,包括:
    确定所述基站在所述第一信道上的退避窗口的长度达到所述最大长度;
    所述调整模块根据所述第一信息调整所述退避窗口,包括:
    若所述基站在所述第一信道上的退避窗口的长度达到所述最大长度并保持P次,则减小所述基站在所述第一信道上的退避窗口,其中,P为不小于0的整数。
  35. 一种用户设备UE,其特征在于,包括:
    获取模块,用于获取用于指示调整第一信道上的退避窗口的第一信息;
    调整模块,用于根据所述第一信息调整所述UE在所述第一信道上的退避 窗口;
    其中,所述获取模块获取所述第一信息包括下述步骤中的至少一个:
    根据基站发送的第二信息获取所述第一信息;
    根据所述第一信道上的空闲信道评测CCA结果获取所述第一信息;
    根据所述第一信道上的系统冲突检测结果获取所述第一信息;
    根据所述第一信道上的退避窗口长度是否达到最大长度获取所述第一信息。
  36. 根据权利要求35所述的UE,其特征在于,所述第二信息为应答信息,所述UE还包括:
    接收模块,用于接收所述基站发送的至少一个应答信息,所述至少一个应答信息为所述基站对应第一信道上传输的至少一个数据包的应答信息,其中所述至少一个应答信息中的每个应答信息为肯定应答ACK信息或者否定应答NACK信息;
    所述获取模块根据所述基站发送的第二信息获取所述第一信息,包括:
    根据所述至少一个应答信息获取所述第一信息;
    所述调整模块根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
    若所述第一信息中包括至少一个NACK信息,则增大所述UE在所述第一信道上的退避窗口;
    若所述第一信息中包括至少一个ACK信息,则减小所述UE在所述第一信道上的退避窗口,或者,所述UE保持所述UE在所述第一信道上的退避窗口不变。
  37. 根据权利要求35所述的UE,其特征在于,所述获取模块根据所述第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
    在所述第一信道上进行CCA检测,获取所述第一信道的空闲时间信息和所述第一信道的CCA检测总时间;
    根据所述第一信道的空闲时间与所述第一信道的CCA检测总时间的比值得到第十八数值,所述第十八数值为所述第一信息;
    所述调整模块根据所述第一信息调整所述UE在所述第一信道上的退避窗 口,包括以下步骤中的至少一个:
    若所述第十八数值小于预设的第二十一阈值,则增大所述UE在所述第一信道上的退避窗口;
    若所述第十八数值大于预设的第二十二阈值,则减小所述UE在所述第一信道上的退避窗口,或者,保持所述UE在所述第一信道上的退避窗口不变。
  38. 根据权利要求35所述的UE,其特征在于,所述获取模块根据所述第一信道上的空闲信道评测CCA结果获取所述第一信息,包括:
    在第一信道上以CCA时隙为单位进行CCA检测,获取所述第一信道的空闲CCA时隙个数信息,其中,所述CCA时隙为预定义的时间长度,所述第一信道的空闲CCA时隙个数信息为所述第一信息;
    所述调整模块根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
    若所述UE在所述第一信道上的M个CCA时隙的时间长度内没有检测到N个空闲CCA时隙,则增大所述UE在所述第一信道上的退避窗口;
    若所述UE在所述第一信道上的M个CCA时隙的时间长度内检测到N个空闲CCA时隙,则减小所述UE在所述第一信道上的退避窗口,或者,保持所述UE在所述第一信道上的退避窗口不变;
    其中M个CCA时隙的时间长度为当前所述UE在所述第一信道上的退避窗口长度,N为UE在进行CCA检测前随机生成的0到M之间的随机数。
  39. 根据权利要求35所述的UE,其特征在于,所述获取模块根据所述第一信道上的系统冲突检测结果获取所述第一信息,包括:
    在第一信道上检测WI-FI系统或LAA系统或其他系统的信号,获得所述UE与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息,所述UE与WI-FI系统或LAA系统或其他系统在所述第一信道上是否冲突的信息为所述第一信息;
    所述调整模块根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括以下步骤中的至少一个:
    若所述第一信息指示系统冲突,则增大所述UE在所述第一信道上的 退避窗口;
    若所述第一信息指示系统不冲突,则减小所述UE在所述第一信道上的退避窗口,或者,保持所述UE在所述第一信道上的退避窗口不变。
  40. 根据权利要求35所述的UE,其特征在于,所述获取模块根据所述第一信道上的退避窗口长度是否达到最大长度获取所述第一信息,包括:
    判断所述UE在所述第一信道上的退避窗口的长度达到所述最大长度;
    所述调整模块根据所述第一信息调整所述UE在所述第一信道上的退避窗口,包括:
    若所述UE在所述第一信道上的退避窗口的长度达到所述最大长度并保持P次,则减小所述UE在所述第一信道上的退避窗口,其中,P为不小于0的整数。
  41. 一种基站,其特征在于,包括:处理器、存储器、通信接口和系统总线,所述存储器和所述通信接口通过所述系统总线和所述处理器连接并完成相互间的通信;
    所述存储器,用于存储计算机执行指令;
    所述通信接口用于和其他设备进行通信;
    所述处理器,用于运行所述计算机执行指令,执行如权利要求1至14任一所述的方法。
  42. 一种用户设备UE,其特征在于,包括:处理器、存储器、通信接口和系统总线,所述存储器和所述通信接口通过所述系统总线和所述处理器连接并完成相互间的通信;
    所述存储器,用于存储计算机执行指令;
    所述通信接口用于和其他设备进行通信;
    所述处理器,用于运行所述计算机执行指令,执行如权利要求15至20任一所述的方法。
PCT/CN2015/074317 2015-03-16 2015-03-16 一种退避窗口的调整方法和装置 WO2016145601A1 (zh)

Priority Applications (9)

Application Number Priority Date Filing Date Title
CN201580077758.8A CN107409418B (zh) 2015-03-16 2015-03-16 一种退避窗口的调整方法和装置
EP19188525.0A EP3654725B1 (en) 2015-03-16 2015-03-16 Backoff window adjustment method, and apparatus
CN201911284426.3A CN110958714B (zh) 2015-03-16 2015-03-16 一种退避窗口的调整方法、通信装置和计算机可读取存储介质
EP15884985.1A EP3264849A4 (en) 2015-03-16 2015-03-16 Method and device for adjusting backoff window
BR112017019827-4A BR112017019827B1 (pt) 2015-03-16 2015-03-16 Método de ajuste de janela de recuo, estação base e equipamento de usuário
KR1020177029563A KR101972941B1 (ko) 2015-03-16 2015-03-16 백오프 윈도 조정 방법 및 장치
PCT/CN2015/074317 WO2016145601A1 (zh) 2015-03-16 2015-03-16 一种退避窗口的调整方法和装置
US15/706,314 US10455623B2 (en) 2015-03-16 2017-09-15 Backoff window adjustment method, and apparatus
US16/560,674 US11191107B2 (en) 2015-03-16 2019-09-04 Backoff window adjustment method, and apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2015/074317 WO2016145601A1 (zh) 2015-03-16 2015-03-16 一种退避窗口的调整方法和装置

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US15/706,314 Continuation US10455623B2 (en) 2015-03-16 2017-09-15 Backoff window adjustment method, and apparatus

Publications (1)

Publication Number Publication Date
WO2016145601A1 true WO2016145601A1 (zh) 2016-09-22

Family

ID=56918218

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2015/074317 WO2016145601A1 (zh) 2015-03-16 2015-03-16 一种退避窗口的调整方法和装置

Country Status (6)

Country Link
US (2) US10455623B2 (zh)
EP (2) EP3264849A4 (zh)
KR (1) KR101972941B1 (zh)
CN (2) CN110958714B (zh)
BR (1) BR112017019827B1 (zh)
WO (1) WO2016145601A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10462805B2 (en) 2016-09-23 2019-10-29 Apple Inc. LAA/WiFi Coexistence for 5GHz antenna sharing
CN110753405A (zh) * 2019-09-26 2020-02-04 江苏久高电子科技有限公司 一种卫星通信系统随机快速接入方法

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3264849A4 (en) * 2015-03-16 2018-03-14 Huawei Technologies Co., Ltd. Method and device for adjusting backoff window
HUE054906T2 (hu) 2015-03-17 2021-10-28 Ericsson Telefon Ab L M Kommunikációs eszköz és annak eljárása kommunikációs hálózatban versengési ablak méretének meghatározásához
CN106162917B (zh) * 2015-03-27 2021-06-04 电信科学技术研究院 一种非授权载波上传输资源的抢占方法及设备
EP3295586B1 (en) * 2015-05-14 2021-06-30 Samsung Electronics Co., Ltd. Method and apparatus for managing contention window in wireless communication system
CN107079488B (zh) * 2015-08-10 2020-05-08 华为技术有限公司 一种随机接入方法及装置
CN107980240B (zh) * 2015-08-14 2021-06-11 瑞典爱立信有限公司 信道接入配置
WO2017045105A1 (en) * 2015-09-14 2017-03-23 Lenovo Innovations Limited (Hong Kong) Contention window size adjustment in a wireless communication system
US11019605B2 (en) * 2017-09-29 2021-05-25 Qualcomm Incorporated Reservation repetition for deafness avoidance
US10973053B2 (en) * 2018-04-05 2021-04-06 Apple Inc. Listen-before-talk procedure with priority and interference addition awareness
CN111757508B (zh) * 2019-03-28 2023-09-22 大唐移动通信设备有限公司 通信数据处理方法、终端和网络设备
CN112584497B (zh) * 2019-09-27 2022-08-12 维沃移动通信有限公司 先听后发lbt子带划分方法、装置、设备及介质
CN110972162B (zh) * 2019-11-22 2022-03-25 南京航空航天大学 一种基于马尔科夫链的水声传感器网络饱和吞吐量求解方法
CN113453269B (zh) * 2020-03-27 2022-07-15 哈尔滨工业大学 一种基于优先级的信道负载统计以及退避窗口设置方法
US20230199835A1 (en) * 2020-07-10 2023-06-22 Nokia Technologies Oy Channel access procedure
US11979911B2 (en) * 2020-10-16 2024-05-07 Apple Inc. Semi-static channel access for traffic with different priorities
US11510245B2 (en) 2021-04-23 2022-11-22 Apple Inc. Thread boost mode for carrier-sense multiple access/carrier aggregation (CSMA/CA)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101267377A (zh) * 2008-03-06 2008-09-17 上海交通大学 基于退避指数的动态调整方法
US8155102B1 (en) * 2011-05-24 2012-04-10 Renesas Mobile Corporation Channel access control
CN103298027A (zh) * 2012-02-24 2013-09-11 华为技术有限公司 一种控制网络拥塞的方法、装置和网络系统
CN103561477A (zh) * 2013-10-16 2014-02-05 华为技术有限公司 一种竞争窗口值的更新方法和接入点

Family Cites Families (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1338125A2 (en) * 2000-11-03 2003-08-27 AT & T Corp. Tiered contention multiple access (tcma): a method for priority-based shared channel access
WO2005006661A1 (en) * 2003-06-30 2005-01-20 Intel Corporation Method and apparatus to provide channel access parameter
US7372867B2 (en) * 2003-06-30 2008-05-13 Intel Corporation Method and apparatus to provide channel access parameter
JP4578206B2 (ja) * 2004-11-02 2010-11-10 パナソニック株式会社 通信装置
US20080002734A1 (en) * 2006-06-29 2008-01-03 Haihong Zheng Contention window management for relay networks
JP4829754B2 (ja) * 2006-11-29 2011-12-07 富士通株式会社 無線通信方法及び無線通信装置
EP2104292A1 (en) * 2008-03-20 2009-09-23 Pantech Co., Ltd. Method for transmitting and receiving data in multiple-input multiple-output wireless local area network environment, and a system and apparatus for performing the method
US8711873B2 (en) * 2010-12-17 2014-04-29 Texas Instruments Incorporated Carrier sense multiple access (CSMA) protocols for power line communications (PLC)
CN103250354B (zh) * 2010-12-07 2015-08-12 德克萨斯仪器股份有限公司 用于电力线通信(plc)的载波侦听多路访问(csma)协议
WO2013002476A1 (en) * 2011-06-30 2013-01-03 Lg Electronics Inc. Method and apparatus for ranging transmission by mobile station in wireless communication system
KR101234758B1 (ko) * 2011-07-05 2013-02-19 서울대학교산학협력단 무선 접속 시스템에서 데이터 채널 예약 방법 및 장치
CN102711130B (zh) * 2012-06-08 2014-11-12 深圳大学 一种自适应退避算法中竞争窗的确定方法及系统
US8837515B1 (en) * 2013-06-06 2014-09-16 Futurewei Technologies, Inc. System and method for collision resolution
US9154996B2 (en) * 2013-06-12 2015-10-06 Honeywell International Inc. Apparatus and method for maintaining reliability of wireless network having asymmetric or other low quality wireless links
JP2015012591A (ja) * 2013-07-02 2015-01-19 株式会社Nttドコモ ユーザ装置、通信システム、及びバックオフ制御方法
CN104219776A (zh) * 2014-08-26 2014-12-17 中山大学 一种基于时隙csma-ca退避算法的优化方法
WO2016081181A1 (en) * 2014-11-21 2016-05-26 Newracom, Inc. Channel access mechanism
US20160212767A1 (en) * 2015-01-16 2016-07-21 Sharp Laboratories Of America, Inc. Systems and methods for contention access in license assisted access
EP3264849A4 (en) * 2015-03-16 2018-03-14 Huawei Technologies Co., Ltd. Method and device for adjusting backoff window
HUE054906T2 (hu) * 2015-03-17 2021-10-28 Ericsson Telefon Ab L M Kommunikációs eszköz és annak eljárása kommunikációs hálózatban versengési ablak méretének meghatározásához
US10742562B2 (en) * 2015-07-16 2020-08-11 Samsung Electronics Co., Ltd. Method and apparatus for adaptive control of contention window in LAA
US10673576B2 (en) * 2015-08-14 2020-06-02 Electronics And Telecommunications Research Institute Operating method of communication node in network supporting licensed and unlicensed bands

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101267377A (zh) * 2008-03-06 2008-09-17 上海交通大学 基于退避指数的动态调整方法
US8155102B1 (en) * 2011-05-24 2012-04-10 Renesas Mobile Corporation Channel access control
CN103298027A (zh) * 2012-02-24 2013-09-11 华为技术有限公司 一种控制网络拥塞的方法、装置和网络系统
CN103561477A (zh) * 2013-10-16 2014-02-05 华为技术有限公司 一种竞争窗口值的更新方法和接入点

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10462805B2 (en) 2016-09-23 2019-10-29 Apple Inc. LAA/WiFi Coexistence for 5GHz antenna sharing
CN110753405A (zh) * 2019-09-26 2020-02-04 江苏久高电子科技有限公司 一种卫星通信系统随机快速接入方法
CN110753405B (zh) * 2019-09-26 2021-12-07 江苏久高电子科技有限公司 一种卫星通信系统随机快速接入方法

Also Published As

Publication number Publication date
EP3654725B1 (en) 2023-09-06
BR112017019827A2 (zh) 2018-07-17
EP3654725A1 (en) 2020-05-20
CN110958714A (zh) 2020-04-03
CN107409418A (zh) 2017-11-28
EP3264849A4 (en) 2018-03-14
US20190394811A1 (en) 2019-12-26
US20180020485A1 (en) 2018-01-18
US10455623B2 (en) 2019-10-22
KR20170127557A (ko) 2017-11-21
EP3264849A1 (en) 2018-01-03
KR101972941B1 (ko) 2019-04-26
CN107409418B (zh) 2024-04-12
BR112017019827B1 (pt) 2024-01-09
US11191107B2 (en) 2021-11-30
CN110958714B (zh) 2021-03-05

Similar Documents

Publication Publication Date Title
WO2016145601A1 (zh) 一种退避窗口的调整方法和装置
US11277864B2 (en) Method and apparatus for determining LBT mode and method for LBT mode switching
EP3395117B1 (en) Listen before talk channel access procedure for uplink laa
US10548157B2 (en) Unlicensed spectrum scheduling method and device, and user equipment UE
US10292182B2 (en) Listen before talk channel access procedure for uplink LAA
US10834758B2 (en) Media access control for license-assisted access
US10045374B2 (en) Low latency WLAN medium access
CN114208373A (zh) 用于未授权射频频谱带的信道接入过程
CN108476476B (zh) 功率指示系统和方法
CN111491392A (zh) 通信方法及终端设备、接入网设备
US11178688B2 (en) Method, base station and user equipment for uplink transmission and control thereof
US20240292460A1 (en) Method and apparatus for ue initiated cot for multi-channel frame based equipment
WO2022073206A1 (zh) 无线通信方法和设备

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 15884985

Country of ref document: EP

Kind code of ref document: A1

WWE Wipo information: entry into national phase

Ref document number: 201580077758.8

Country of ref document: CN

NENP Non-entry into the national phase

Ref country code: DE

REEP Request for entry into the european phase

Ref document number: 2015884985

Country of ref document: EP

ENP Entry into the national phase

Ref document number: 20177029563

Country of ref document: KR

Kind code of ref document: A

REG Reference to national code

Ref country code: BR

Ref legal event code: B01A

Ref document number: 112017019827

Country of ref document: BR

ENP Entry into the national phase

Ref document number: 112017019827

Country of ref document: BR

Kind code of ref document: A2

Effective date: 20170915