EP2992712A1 - Opération de recherche, d'opportunité de transmission (txop) et commande de flux pour extension de plage dans le wifi - Google Patents

Opération de recherche, d'opportunité de transmission (txop) et commande de flux pour extension de plage dans le wifi

Info

Publication number
EP2992712A1
EP2992712A1 EP14728046.5A EP14728046A EP2992712A1 EP 2992712 A1 EP2992712 A1 EP 2992712A1 EP 14728046 A EP14728046 A EP 14728046A EP 2992712 A1 EP2992712 A1 EP 2992712A1
Authority
EP
European Patent Office
Prior art keywords
sta
link quality
relay
frame
relay node
Prior art date
Legal status (The legal status 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 status listed.)
Withdrawn
Application number
EP14728046.5A
Other languages
German (de)
English (en)
Inventor
Guodong Zhang
Xiaofei Wang
Robert L. Olesen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
InterDigital Patent Holdings Inc
Original Assignee
InterDigital Patent Holdings Inc
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 InterDigital Patent Holdings Inc filed Critical InterDigital Patent Holdings Inc
Publication of EP2992712A1 publication Critical patent/EP2992712A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/10—Flow control between communication endpoints
    • H04W28/12—Flow control between communication endpoints using signalling between network elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/047—Public Land Mobile systems, e.g. cellular systems using dedicated repeater stations

Definitions

  • FIG. IB depicts an exemplary wireless transmit/receive unit (WTRU).
  • WTRU wireless transmit/receive unit
  • FIG. 9 depicts an example of a frame format of a transmission, where a Frame
  • One or more metrics may be considered by a STA when selecting an AP for association (e.g., in a non-relay based WiFi network).
  • the metrics may include the received signal strength, path loss, or link quality of the AP (e.g., the AP that may transmit the beacon frame or probe response frame).
  • Selecting the relay node based on the link quality of the received transmission may result in a relay path via relay node 2 which may exhibit a path loss and/or link quality worse than a relay path via relay node 1.
  • An efficient AP discovery mechanism may allow the STA to find the relay path that may include a consideration of the total link quality.
  • the source node may not know the link quality of the relay path between the relay node and the destination node.
  • the source node may continue to transmit data to the relay node, which may increase the congestion at the relay node.
  • a flow control mechanism e.g., an efficient flow control mechanism at the relay node may prevent path unreliability.
  • the flow control notification frame may signal the address of a destination node.
  • the data traffic for an end-STA (e.g., an end-STA that belongs to the relay path experiencing a link problem) may be impacted.
  • the flow control notification frame may be transmitted as a unicast or a broadcast frame.
  • a transmitter address (TA) field in the MAC header of the frame may be set to a relay node address.
  • the flow control information in the flow control notification frame may refer to the relay node identified by the TA address.
  • FIG. 11 depicts an example frame format of the flow control notification frame.
  • the category field may be set to a value (e.g., as may be specified in a standard) representing a two-hop relay.
  • the action (e.g., two- hop relay action) field may be set to a value (e.g. , a unique value) that may represent flow control notification.
  • the action field may be set as specified in a standard.
  • a data frame may include an indication of the contention free end (CF-end)
  • two-hop request to send/clear to send may establish and/or may reserve the TXOP for the duration (e.g., entire duration) of relay frame exchanges between a source node, a relay node, and a destination node.
  • the duration to transmit the data frame from the relay node to the destination node may be assumed to be the worst case.
  • the duration to transmit the data frame from the relay node to the destination node may be calculated (e.g., calculated conservatively).
  • the source node may start data transmission after a SIFS time (e.g., following receipt of a CTS frame from the relay node).
  • the relay node may send an ACK frame (e.g., if the received data frame is decoded correctly and an explicit ACK is used).
  • the STA may not send an ACK frame (e.g., if an implicit ACK is used).
  • the source node may not receive an ACK by a time SIFS time + ACK_Time after sending the data frame (e.g., if an explicit ACK is used and the received data frame is not decoded correctly).
  • the source node may not receive an implicit ACK (e.g., if an implicit ACK is used and the received data frame is not decoded correctly).
  • a data frame with an ACK indication field set to 00 from the relay node may indicate an implicit ACK.
  • the destination node may send an ACK frame to the relay node (e.g., if the received data frame is decoded correctly).
  • the destination node may check the CF-end indication in the received data frame.
  • the destination node may release the TXOP and may reset the NAV for STAs near the destination node (e.g., if the CF-end indication is positive).
  • the destination node may send a CF-end frame.
  • the destination node may set an ACK indication field (e.g., to 10) in an outgoing ACK frame.
  • the destination node may not send a CF-end frame when the ACK indication field is set to "10" in the outgoing ACK frame.

Landscapes

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

Abstract

L'invention concerne des systèmes, des procédés et des instrumentalités s'appliquant à une station afin de déterminer une qualité de liaison. Une station (STA) peut déterminer la qualité d'une voie qui comprend un nœud relais en déterminant une qualité de liaison associée à chaque liaison dans la voie. La station peut recevoir une transmission indiquant qu'une entité de transmission est un nœud relais. La transmission peut indiquer une première qualité de liaison associée à une liaison entre le nœud relais et un point d'accès (PA) racine. La station peut déterminer une seconde qualité de liaison associée à une liaison entre la station et le nœud relais, par exemple, la station peut estimer la seconde qualité de liaison. La station peut déterminer une qualité de liaison totale associée à une liaison combinée, de la station au point d'accès racine en passant par le noeud relais. La station peut sélectionner une entité à associer sur la base de la qualité de liaison totale.
EP14728046.5A 2013-05-02 2014-05-02 Opération de recherche, d'opportunité de transmission (txop) et commande de flux pour extension de plage dans le wifi Withdrawn EP2992712A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201361818854P 2013-05-02 2013-05-02
PCT/US2014/036627 WO2014179722A1 (fr) 2013-05-02 2014-05-02 Opération de recherche, d'opportunité de transmission (txop) et commande de flux pour extension de plage dans le wifi

Publications (1)

Publication Number Publication Date
EP2992712A1 true EP2992712A1 (fr) 2016-03-09

Family

ID=50884534

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14728046.5A Withdrawn EP2992712A1 (fr) 2013-05-02 2014-05-02 Opération de recherche, d'opportunité de transmission (txop) et commande de flux pour extension de plage dans le wifi

Country Status (8)

Country Link
EP (1) EP2992712A1 (fr)
JP (2) JP2016523036A (fr)
KR (1) KR101735031B1 (fr)
CN (1) CN105165072A (fr)
HK (1) HK1216123A1 (fr)
RU (1) RU2625943C2 (fr)
TW (1) TWI651985B (fr)
WO (1) WO2014179722A1 (fr)

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WO2016076107A1 (fr) * 2014-11-14 2016-05-19 株式会社Ｎｔｔドコモ Dispositif utilisateur et procédé de communication d2d
WO2017015788A1 (fr) 2015-07-24 2017-02-02 Panasonic Intellectual Property Corporation Of America Découverte améliorée d'ue relais pour services de proximité
CN106604203B (zh) * 2015-10-20 2020-12-25 华为技术有限公司 无线局域网中站点间直接通信的方法及相关设备
US9788217B2 (en) * 2015-11-13 2017-10-10 Cable Television Laboratories, Inc. Communications when encountering aggressive communication systems
CN106937382B (zh) * 2015-12-29 2020-05-08 华为技术有限公司 一种信令消息传输方法和装置
JP6272565B1 (ja) * 2016-09-05 2018-01-31 三菱電機株式会社 無線通信端末、無線通信システム及び経路選択プログラム
US10743332B2 (en) * 2016-11-18 2020-08-11 Qualcomm Incorporated Techniques and apparatuses for complementary transmission relating to an interrupted traffic flow in new radio
CN109804693B (zh) * 2017-04-06 2021-08-13 华为技术有限公司 一种调度方法、装置及系统
WO2018232693A1 (fr) * 2017-06-22 2018-12-27 Huawei Technologies Co., Ltd. Transmission d'élément de charge de bss dans un système de réseau local sans fil
US11329871B2 (en) * 2018-02-28 2022-05-10 Qualcomm Incorporated Conditional inheritance in management frame for multi-link aggregation
JP7218852B2 (ja) * 2018-05-02 2023-02-07 ＰｉｃｏＣＥＬＡ株式会社 無線経路制御方法、無線通信システム、無線ノード、及び、無線経路制御プログラム
BR112021001274A2 (pt) 2018-08-08 2021-04-20 Telefonaktiebolaget Lm Ericsson (Publ) controle de fluxo para redes de backhaul de acesso integrado (iab)
WO2021120077A1 (fr) * 2019-12-19 2021-06-24 aTELEFONAKTIEBOLAGET LM ERICSSON (PUBL) Procédé de sélection de liaison, équipement utilisateur, nœud de réseau et système de télécommunication
JP7361201B2 (ja) * 2020-03-25 2023-10-13 京セラ株式会社 通信制御方法及び中継ユーザ装置
WO2021243604A1 (fr) * 2020-06-03 2021-12-09 Oppo广东移动通信有限公司 Procédé et dispositif de transmission de données
CN113055969B (zh) * 2021-03-23 2023-03-24 浙江大华技术股份有限公司 节点的确定方法及装置
WO2022209803A1 (fr) * 2021-03-31 2022-10-06 日本電気株式会社 Dispositif de communication, système de communication et procédé de communication
WO2024117661A1 (fr) * 2022-11-30 2024-06-06 엘지전자 주식회사 Procédé et dispositif de mise en œuvre de procédure de transmission de relais dans un système lan sans fil

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Also Published As

Publication number Publication date
RU2015150724A (ru) 2017-06-07
KR20160003855A (ko) 2016-01-11
WO2014179722A1 (fr) 2014-11-06
RU2625943C2 (ru) 2017-07-19
KR101735031B1 (ko) 2017-05-15
TWI651985B (zh) 2019-02-21
CN105165072A (zh) 2015-12-16
HK1216123A1 (zh) 2016-10-14
TW201513716A (zh) 2015-04-01
JP2018023147A (ja) 2018-02-08
JP2016523036A (ja) 2016-08-04

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