WO2016054969A1 - Procédé et système de compétition pour le droit d'utilisation d'une porteuse sans licence, et procédé de repli de compétition - Google Patents

Procédé et système de compétition pour le droit d'utilisation d'une porteuse sans licence, et procédé de repli de compétition Download PDF

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Publication number
WO2016054969A1
WO2016054969A1 PCT/CN2015/090175 CN2015090175W WO2016054969A1 WO 2016054969 A1 WO2016054969 A1 WO 2016054969A1 CN 2015090175 W CN2015090175 W CN 2015090175W WO 2016054969 A1 WO2016054969 A1 WO 2016054969A1
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WO
WIPO (PCT)
Prior art keywords
window
contention
unit
unlicensed carrier
time point
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PCT/CN2015/090175
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English (en)
Chinese (zh)
Inventor
苟伟
彭佛才
赵亚军
夏树强
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中兴通讯股份有限公司
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Publication of WO2016054969A1 publication Critical patent/WO2016054969A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path

Definitions

  • the unlicensed carrier is Get free access to unauthorized carriers when you are free;
  • the first phase and the third phase are composed of several time units, and the time units of the first phase, the second phase and the third phase are numbered;
  • the start number of the time unit number of the third stage includes: adding a first backoff time point number of the first node or a first back time point number of the first stage plus Send the first signal plus one more time; or,
  • the first back-off time point number of the transmission node in the third stage is greater than the total value of the time unit included in the third stage, the first back-off time point number is added with a pair of time unit numbers included in the third stage.
  • the value after modulo is used as the starting number of the time unit number of the third stage; or,
  • the first phase, the second phase, and the third phase are consecutively included in time: the time unit number of the first phase and the time unit number of the third phase are consecutive.
  • FIG. 1 is a flowchart of a method for implementing unlicensed carrier usage right competition according to an embodiment of the present invention. As shown in FIG. 1, the method includes:
  • the starting number of the back-off unit of the first competitive retreat window is not set, so the default setting is 0.
  • Each of the transmitting nodes simultaneously listens to the unlicensed carrier in the first contention retreat window, that is, in the first contention retreat window, starting from the first retreat time point number and counting down to 0, while listening Unlicensed carrier.
  • the number of the transmission node that competes for the unlicensed carrier usage right here refers to the number information when the network is formed, and is generally set according to the number of transmission nodes in the network, which is a conventional incrementally arranged number.
  • the fallback time point number is the starting point of the countdown of the competition fallback window
  • the start number of the fallback unit is the fallback termination point of the competitive fallback window.
  • the starting number of the back-counting unit from the second back-off time point number to the second competitive back-off window includes:
  • the first backoff time point number of the transmitting node that continues the unlicensed carrier usage right competition in the second contention retreat window is greater than the total number of back-off units in the second contention retreat window
  • the number of the first backoff time point of the transmission node that performs the unlicensed carrier usage right competition in the fallback window is less than the total number of the backoff units in the second contention retreat window, the first backoff time point number is added. 1.
  • the starting number of the retreating unit as the second competitive retreat window
  • Step 102 Compete in a second contention retreat window to obtain a transmission node that obtains an unlicensed carrier usage right, and perform data transmission on the unlicensed carrier.
  • the transmitting node of the embodiment of the present invention further includes a notification unit, configured to detect that the unlicensed carrier is idle before the first retreat time point arrives before the non-authorized carrier usage right competition is performed in the second contention retreat window. Then, when the first retreat time point number arrives, the first signal is sent by using the unlicensed carrier, so that other transmission nodes can detect that the unlicensed carrier is busy;
  • the transmitting node performs interception in the first phase; the transit node in the first phase sends in the second phase Sending the first signal, and continuing to perform the interception in the third phase; completing the competitive fallback through the transport node of the third phase;
  • the method includes: when the first backoff time point number of the transmission phase arrives or the transmitting node counts down from the first backoff time point countdown counter to 0 Previously, the transmission phase listening for unauthorized carrier usage rights was always idle.
  • the site 1 and the site 8 are the unauthorised use rights competitions that successfully pass the first contention fallback window at the same time.
  • the first backoff time point number is 0, the first signal is sent by using the unlicensed carrier, and the first signal sends at least the occupied signal. At this point, other sites will hear that the unlicensed carrier is busy, and other sites stop the competition.
  • the second The starting number of the retracting unit of the competition retreat window is the first retreat time point number plus two retreat time units, that is, 53.
  • the point number is the number of the node, (assuming the cell number is 504, the corresponding value is 0 to 503).
  • the numbers of Site 1 and Site 8 are 105 and 231, respectively, the numbers 105 and 231 of Site 1 and Site 8 are respectively used as the second backoff time point number, and the countdown is counted to 53, and the uncounted carrier is performed during the countdown process.
  • Site 1 to Site 10 there are 10 sites (numbered as Site 1 to Site 10) and compete for the right to use the same unlicensed carrier. Assume that there are 512 time units in the first phase of the competitive backoff window, numbered from 0 to 511.
  • the 10 sites randomly generate the first backoff time point numbers of the respective first contention retreat windows from 0 to 511, respectively, and assume that the stations 1 to 10 respectively randomly generate numbers 50, 200, 320, 404, 150, 180, 210, 50, 302, 311.
  • the number randomly generated by station 1 and station 8 is 50 and the smallest, so when station 1 and station 8 count down from the first back-off point number to 0, the intercepted unlicensed carrier is always empty.
  • Site 1 to Site 10 there are 10 sites (numbered as Site 1 to Site 10) and compete for the right to use the same unlicensed carrier. Assume that there are 512 time units in the first phase of the competitive backoff window, numbered from 0 to 511. The 10 sites randomly generate the first backoff time point numbers of the respective first contention retreat windows from 0 to 511, respectively, and assume that the stations 1 to 10 respectively randomly generate numbers 50, 200, 320, 404, 150, 180, 210, 50, 302, 311.
  • the station 1 and the station 8 count down from 15 and 28 to 23, respectively, and listen to the unlicensed carrier during the countdown process.
  • the interception result is that the unlicensed carrier is empty, then the station sends a signal.
  • the station 8 stops the competition. In this embodiment, the station 8 will first fall back to 21, so the station 8 obtains the unauthorized carrier usage right, and the station 1 will stop the competition.
  • the station calculates the second backoff time point number in the second contention fallback window according to its own number (ID), and performs a contention process to determine whether it is the right to use the unauthorized carrier alone (or eventually). ;or,
  • the site believes that it has failed to compete for unauthorized carrier usage rights. If the interception result is that the unlicensed carrier is idle, the station considers itself to compete for the unlicensed carrier usage right, but the station at this time may compete with the neighboring transmission node for the right to use the unlicensed carrier at the same time. This is because the contention retreat window of the adjacent transmission node competing for the unlicensed carrier usage right is time-aligned, and the generation range of the retreat time point is the same or partially overlapping, and the first retreat time point is randomly generated by the station. Therefore, it is possible that multiple sites generate the same fallback time point, so that during the execution of the competition, the countdown to 0 is simultaneously counted, and the two sites simultaneously find that the unlicensed carrier is idle.

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

Abstract

L'invention concerne un procédé et un système de compétition pour le droit d'utilisation d'une porteuse sans licence, et un procédé de repli de compétition, comprenant les étapes suivantes : des nœuds d'émission génèrent chacun de façon aléatoire un numéro de série d'un premier point de temps de repli de premières fenêtres de repli de compétition respectives ; les nœuds d'émission respectifs surveillent simultanément une porteuse sans licence à l'intérieur des premières fenêtres de repli de compétition respectives ; avant que le numéro de série du premier point de temps de repli ne soit atteint, si la porteuse sans licence surveillée est continuellement inactive, les nœuds d'émission continuent leur compétition pour obtenir le droit d'utiliser la porteuse sans licence à l'intérieur d'une deuxième fenêtre de repli de compétition ; si la porteuse sans licence surveillée est continuellement occupée, les nœuds d'émission cessent leur compétition pour obtenir le droit d'utiliser la porteuse sans licence ; un nœud d'émission qui réussit à obtenir le droit d'utiliser la porteuse sans licence par compétition à l'intérieur de la deuxième fenêtre de repli de compétition émet des données sur la porteuse sans licence. Dans la solution technique ci-dessus, les nœuds d'émission tentent d'obtenir le droit d'utiliser la porteuse sans licence à l'intérieur des première et deuxième fenêtres de temps de compétition, et un seul nœud d'émission peut obtenir le droit, ce qui permet d'éviter les interférences de canaux causées par les conflits de compétition ; en outre, la compétition pour obtenir le droit d'utiliser la porteuse sans licence est équitable et la porteuse sans licence est utilisée de façon rationnelle.
PCT/CN2015/090175 2014-10-10 2015-09-21 Procédé et système de compétition pour le droit d'utilisation d'une porteuse sans licence, et procédé de repli de compétition WO2016054969A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201410531738.0A CN105578609A (zh) 2014-10-10 2014-10-10 实现非授权载波使用权竞争的方法、系统及竞争回退方法
CN201410531738.0 2014-10-10

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10396883B2 (en) 2017-05-26 2019-08-27 Qualcomm Incorporated Terrestrial wireless positioning in licensed and unlicensed frequency bands
US10461847B2 (en) 2017-05-26 2019-10-29 Qualcomm Incorporated Terrestrial wireless positioning in licensed and unlicensed frequency bands

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110771227B (zh) * 2017-08-04 2022-08-26 南通朗恒通信技术有限公司 一种被用于非授权频谱的用户设备、基站中的方法和装置

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CN101848496A (zh) * 2009-03-23 2010-09-29 华硕电脑股份有限公司 载波管理方法及通讯装置
US20120250631A1 (en) * 2011-03-31 2012-10-04 Renesas Mobile Corporation Multiplexing Logical Channels in Mixed Licensed and Unlicensed Spectrum Carrier Aggregation
US20140036818A1 (en) * 2011-02-11 2014-02-06 Renesas Mobile Corporation Signaling Method To Enable Controlled TX Deferring In Mixed License and Unlicensed Spectrum In Carrier Aggregation In Future LTE-A Networks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101848496A (zh) * 2009-03-23 2010-09-29 华硕电脑股份有限公司 载波管理方法及通讯装置
US20140036818A1 (en) * 2011-02-11 2014-02-06 Renesas Mobile Corporation Signaling Method To Enable Controlled TX Deferring In Mixed License and Unlicensed Spectrum In Carrier Aggregation In Future LTE-A Networks
US20120250631A1 (en) * 2011-03-31 2012-10-04 Renesas Mobile Corporation Multiplexing Logical Channels in Mixed Licensed and Unlicensed Spectrum Carrier Aggregation

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10396883B2 (en) 2017-05-26 2019-08-27 Qualcomm Incorporated Terrestrial wireless positioning in licensed and unlicensed frequency bands
US10461847B2 (en) 2017-05-26 2019-10-29 Qualcomm Incorporated Terrestrial wireless positioning in licensed and unlicensed frequency bands
US10887005B2 (en) 2017-05-26 2021-01-05 Qualcomm Incorporated Terrestrial wireless positioning in licensed and unlicensed frequency bands
US11716137B2 (en) 2017-05-26 2023-08-01 Qualcomm Incorporated Terrestrial wireless positioning in licensed and unlicensed frequency bands

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