[go: up one dir, main page]

WO2009072825A2 - Appareil et procédé pour émettre et recevoir des données dans un système de communication sans fil - Google Patents

Appareil et procédé pour émettre et recevoir des données dans un système de communication sans fil Download PDF

Info

Publication number
WO2009072825A2
WO2009072825A2 PCT/KR2008/007177 KR2008007177W WO2009072825A2 WO 2009072825 A2 WO2009072825 A2 WO 2009072825A2 KR 2008007177 W KR2008007177 W KR 2008007177W WO 2009072825 A2 WO2009072825 A2 WO 2009072825A2
Authority
WO
WIPO (PCT)
Prior art keywords
route
station
relay
data
transmitting
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.)
Ceased
Application number
PCT/KR2008/007177
Other languages
English (en)
Other versions
WO2009072825A3 (fr
Inventor
Hyoung Jin Kwon
Jin Kyeong Kim
Yong Sun Kim
Kyeongpyo Kim
Woo Yong Lee
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.)
Electronics and Telecommunications Research Institute ETRI
Original Assignee
Electronics and Telecommunications Research Institute ETRI
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
Priority claimed from KR1020080041976A external-priority patent/KR101081732B1/ko
Application filed by Electronics and Telecommunications Research Institute ETRI filed Critical Electronics and Telecommunications Research Institute ETRI
Priority to JP2010536849A priority Critical patent/JP5290319B2/ja
Priority to US12/746,514 priority patent/US8797848B2/en
Publication of WO2009072825A2 publication Critical patent/WO2009072825A2/fr
Publication of WO2009072825A3 publication Critical patent/WO2009072825A3/fr
Anticipated expiration legal-status Critical
Priority to US14/329,623 priority patent/US9113407B2/en
Priority to US14/821,854 priority patent/US9877262B2/en
Priority to US15/877,069 priority patent/US10548061B2/en
Priority to US16/751,590 priority patent/US20200162992A1/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/22—Communication route or path selection, e.g. power-based or shortest path routing using selective relaying for reaching a BTS [Base Transceiver Station] or an access point
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L45/00—Routing or path finding of packets in data switching networks
    • H04L45/22—Alternate routing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W40/00—Communication routing or communication path finding
    • H04W40/02—Communication route or path selection, e.g. power-based or shortest path routing
    • H04W40/12—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality
    • H04W40/16—Communication route or path selection, e.g. power-based or shortest path routing based on transmission quality or channel quality based on interference

Definitions

  • the present invention relates to an apparatus and method for transmitting and receiving data in a wireless communication system, and particularly, to an apparatus and method for transmitting and receiving data using multiple routes.
  • the method has a weak point that information about the route that is in use is required to be inserted in a Media Access Control (MAC) header in every data frame. Also, although a load of the inserted information is not heavy, power consumption for switching a beam every time when transmitting a data packet to another route may be a burden for a device that is designed to be operational with a low power.
  • MAC Media Access Control
  • An aspect of the present invention provides an apparatus and method for transmitting/receiving data in a wireless communication system, which can smoothly communicate, even though the direct route is interrupted, through an alternative route using a relay device in addition to a direct route.
  • Another aspect of the present invention also provides an apparatus and method for transmitting/receiving data in a wireless communication system, which can smoothly communication delay sensitive information such as video streaming, even though the direct route is interrupted, through sequentially using a direct route and alternative routes between stations.
  • a station including a route setting unit to respectively set a communication route to a corresponding station and a communication route to a relay device, a route verifying unit to verify whether the set communication routes are available, a route selecting unit to select one route from among communication routes according to a result of the verification of the availability, and a data transceiver to exchange data through the selected communication route.
  • a method for transmitting/receiving data of a station including respectively setting a direct route to a corresponding station and a relay route to a relay device, selecting one route from among the direct route and relay route, and transmitting/receiving data through the selected route.
  • a method of transmitting/receiving data of a relay device including respectively setting a communication route to a single station and a communication route to a corresponding station that intends to communicate with the station, and receiving the data from the single station and transferring the data to the corresponding station.
  • FIG. 1 is a block diagram illustrating a data transceiver in a wireless communication system according to an example embodiment
  • FIG. 2 is a block diagram illustrating a configuration of a station of FIG. 1;
  • FIG. 3 illustrates a message chart with respect to an internal operation of a relay device of FIG. 1 ;
  • FIG. 4 is a flowchart illustrating a data transmitting/receiving method in a wireless communication system according to an example embodiment
  • FIG. 5 illustrates a bitmap format of a Media Access Control (MAC) capability information element (IE);
  • MAC Media Access Control
  • IE capability information element
  • FIGS. 6 to 9 illustrate a bitmap format of a Relay information element(IE);
  • FIG. 10 is a flowchart illustrating an antenna training procedure between the station and the relay device, according to an example embodiment.
  • FIG. 11 illustrates an explicit method that selects an alternative route using a relay switch message according to an example embodiment
  • FIG. 12 illustrates an implicit method that selects an alternative route using a time of communication interruption, according to an example embodiment.
  • a basic concept of the present invention is to enable stations to smoothly communicate, even though the direct route is interrupted, through an alternative route using a relay device in addition to a direct route.
  • a data transmitting/receiving method in a wireless communication system may be applicable to a WiMedia, and is not limited thereto.
  • the WiMdia a compound word of a Wireless and a Media, is a wireless technology that eliminates a connection cable in a home networking, and enables super high-speed data transmission between electric home appliances such as a PDA, MP3 player, digital TV, HDTV, DVD player, digital camcorder, digital set-top box, game console, and the like.
  • a WiMedia Media Access Control includes two MAC formats that are a Distributed Reservation Protocol (DRP) and Priority Contention Access (PCA).
  • DRP Distributed Reservation Protocol
  • PCA Priority Contention Access
  • the DRP which is a similar to a Time Division Multiple Access (TDMA)
  • TDMA Time Division Multiple Access
  • each device exchanges a beacon in a Beacon Period (BP) and establishes a beacon group or extended beacon group, thereby enabling contention-free reservation data communication in the group.
  • BP Beacon Period
  • the PCA which is similar to Enhanced Distributed Channel Access (EDCA) of IEEE 802.1 Ie, performs data transmission using a different backoff according to each priority.
  • EDCA Enhanced Distributed Channel Access
  • FIG. 1 is a block diagram illustrating a data transceiver in a wireless communication system according to an example embodiment and FIG. 2 is a block diagram illustrating a configuration of a station of FIG. 1.
  • the data transceiver in the wireless communication system includes a first station 10, second station 20 and a relay device 30.
  • the wireless communication system uses a band at 60 GHZ or 1 THz and the first station 10 and second station 20 are in a Line of Sight (LOS).
  • LOS Line of Sight
  • the first station 10 and second station 20 may communicate using a direct route A established in the LOS. Also, each of the stations 10 and 20 supports relaying.
  • the first station 10 includes a route setting and antenna training unit 100, route verifying unit 200, available route storing unit 300, route selecting unit 400 and data transceiver 500.
  • the route setting and antenna training unit 100 sets a direct route 1 and relay route 2 between the second station 20 and relay device 30, and performs antenna training.
  • the station 20 is a corresponding station that intends to communicate with the first station 10.
  • the route verifying unit 200 verifies whether the direct route 1 and relay route 2 are available, the direct route 1 and the relay route 2 being established by the route setting and antenna training unit 100.
  • the route verifying unit 200 stores an available route to the available route storing unit 300. Route data of the available route storing unit 300 is updated according wireless environment.
  • the route selecting unit 400 is provided with available routes from the available route storing unit 300 and selects one from among the available routes.
  • the route selecting unit 400 may preferably select the direct route 1 to the second station 20 and, when the direct route is interrupted, may select the relay route 2 to the relay device 30.
  • the route selecting unit 400 is not limited thereto, and when both of the direct route 1 and relay route 2 are available, the route selecting unit 400 may alternately select two routes according to an order of use.
  • the data transceiver 500 transmits/receives data to/from the second station 20 or relay device 30 through the selected route. In this instance, the data transmitted to the relay device 30 is transferred to the second station 20 again.
  • a super frame transmitted/received from the stations 10 and 20 is composed of a plurality of media access slots and includes a Beacon Period (BP) and Data Transfer Period (DTP).
  • the BP is divided into beacon slots and transferred.
  • a beacon performs adjusting of a synchronization of a network and the DTP transmits data according to the DRP and PCA.
  • Each of the stations 10 and 20 use a sector antenna or array antenna to support a forward transmission. This may be to establish the beacon group, a basis of the DRP of the WiMedia MAC through supporting the forward transmission of the beacon, and to enable a contention-free communication between beacon groups. However, when each of the stations 10 and 20 transmits data excluding the beacon, the transmission is performed in a specific direction that is not a forward direction.
  • the relay device 30 is a device to provide an additional route with respect to the first station 10 and second station 20.
  • the additional route indicates an alternative route enabling data communication between the first station 10 and second station 20 in addition to the direct route 1 that is established in the LOS of the first station 10 and second station 20.
  • the alternative route includes a fist relay route between the first station 10 and relay device 30 and a second relay route 3 between the second station 20 and relay device 30.
  • the alternative route and the direct route 1 are set not to conflict with each other.
  • two RF chains of relay device 30 When receiving the BP, two RF chains of relay device 30 perform in a reception mode. The relay device 30 receives a beacon and transmits the received beacon to stations 10 and 20. Conversely, when receiving the DTP, if the relay device 30 does not perform a relay operation, two RF chains of the relay device 30 perform in a reception mode. However, when the relay operation is performed, the two RF chains of the relay device 30 are respectively switched to perform in a reception mode and a transmission mode depending on transmission direction of data.
  • the relay device 30 transfers data in an amplify-and-forward scheme as illustrated in FIG. 3, simultaneously decodes a packet header to check which ACK policy is used, and performs switching of a mode of the RF Chains depending on the check result.
  • ACK policy may be one of a No-ACK, Immediate ACK, and Block ACK.
  • the relay device 30 maintains a tx and rx mode of the two RF Chains.
  • the relay device 30 switches both of the two RF Chains. That is, the relay device 30 switches a RF Chain in the tx mode into the rx mode and a RF Chain in the rx mode into the tx mode. In this instance, the relay device 30 performs switching after completing transmission of the packet that is presently being relayed.
  • the relay device 30 switches the mode of the two RF Chains according to a transmission time of an ACK included in the decoded packet header.
  • a data transceiver using the relay device 30 in the wireless communication system according to the present invention enables smooth data communication between stations through the alternative route by using the relay device 30 even when a direct route 1 is interrupted by a person or obstacle.
  • FIG. 4 is a flowchart illustrating a data transmitting/receiving method in a wireless communication system according to an example embodiment.
  • FIG. 5 illustrates a bitmap format of an MAC capability information element (IE).
  • IE MAC capability information element
  • a station sets an alternative route using a relay device in operation SlOO.
  • the station and a corresponding station may communicate through a direct route located in a LOS.
  • each station may use at least one relay route according to a type of the station and a type of an antenna included in the station.
  • each station sets a relay support capability field to 1 to use the relay route, the relay support capability field being newly defined in the MAC capability IE.
  • the station includes the MAC capability IE, wherein the relay support capability field sets to 1, in a beacon or DTP and transmits.
  • bitmap format of the MAC capability IE defines a Priority
  • PCA Contention Access
  • DRP Distributed Reservation Protocol
  • explicit explicit, relay, and the like.
  • one bit of Octet 1 represents a relay capability field and two bits of Octet 1 represent a relay support capability field.
  • the relay capability filed indicates whether a relay device perform a relay operation.
  • the relay support capability field indicates whether the station supports data exchange using the relay route.
  • the relay device receives a beacon of other stations before transmitting a frame. Subsequently, when the relay device receives at least one beacon during scanning a signal, the relay device transmits the beacon from an empty slot using a forward beam according to a beacon transmission procedure described in a wireless MAC. In this instance, the relay device transmits MAC capability IE after setting the relay capability field of the MAC capability IE to 1.
  • the setting of the alternative route includes verifying whether the relay device exists and notifying that the station and corresponding station want to communicate data using the relay device to each station and relay device, thereby combining each station.
  • the alternative setting procedure is possible through that the station and corresponding station transmit a beacon including the relay support capability filed that is set to 1 and then the relay device that receives the beacon transmits the beacon including the relay capability filed that is set to 1.
  • the station performs antenna training with the relay device in operation
  • the relay device respectively performs antenna training with station and corresponding station that want to communicate.
  • the antenna training is a procedure to adjust a direction of a beam of the directional antenna and reduce a width of the beam in order to transmit farther or increase throughput.
  • the station checks a mode of a communication route in operation
  • the communication route between the station and corresponding station may include a single route mode and sequential multi-route mode.
  • the single route is a mode wherein data is transmitted/received using one route from the multi-route between the stations.
  • the sequential multi-route mode is a mode wherein data is transmitted/received through sequentially using the multi-route between the stations.
  • the multi-route may include an alternative route using the direct route located in the LOS between the stations and relay device.
  • the station transmits/receives data using one route from the multi-route in operation S 130.
  • the station transmits/receives data using one route among the direct route and alternative route.
  • the station may continuously transmit/ receive data using the selected route until the one selected route is interrupted. Subsequently, when the direct route is available, the station may communicate through the direct route again.
  • the station preferably transmits/receives data using the direct route.
  • the direct route may be temporarily or permanently interrupted by a person, obstacle, and the like. Then, the station may transmit/receive the data using the alternative route. Subsequently, when the direct route becomes available, the station may communicate through the direct route again.
  • a route switching method of the station according to interruption of the communication route may include an explicit method that uses a relay switch command and an implicit method that uses a time of the interruption.
  • the route switching method will be described in detail referring to FIG. 11 and FIG. 12.
  • the station transmits/receives data using all of the multi-route in operation S 140.
  • the station may determine an order of the direct route and relay route and transmit/receive data using the direct route or relay route according to the determined order. However, when one of the two routes is interrupted, the station may transmit/receive data using merely one available route. Subsequently, when the interrupted route becomes available, the station may communicate using the multi-route according to the order.
  • the station may transmit/receive data using the direct route, and then transmit/receive data using the alternative route. Then, the station may communicate through alternately using the direct route and the alternative route. However, when the direct route is interrupted, the station communicates merely using the al- ternative route. Subsequently, when the direct route becomes available, the station may sequentially use the direct route and alternative route to communicate.
  • the direct route and alternative route may be managed as the available route list according to availability.
  • the available route list may be updated according to periodical verification of the availability.
  • FIGS. 6 to 9 illustrate a bitmap format of a Relay IE.
  • the Relay IE defines a Relay command type, Relay mode, and the like.
  • the Relay IE may request a command to perform a relay operation such as relay set, relay complete, relay switch and be used in response to the request.
  • a relay operation such as relay set, relay complete, relay switch
  • bit information for each Relay command type is as illustrated in FIG. 7
  • bit information for each Relay mode type is as illustrated in FIG. 8.
  • the Relay mode type includes a tx mode field and link order field.
  • the tx mode indicates a communication route mode of a station. For example, when the tx mode field is 0, it indicates a single route mode, and when the tx mode field is 1, it indicates a sequential multi-route mode.
  • the link order field indicates a route and an order of the route, which is as illustrated in FIG. 9.
  • the link order field may be defined according to the route and the order of the route.
  • 0 indicates a direct route and 1 indicates a first alternative route.
  • 2 indicates a second alternative route.
  • the present invention is not limited thereto.
  • FIG. 10 is a flowchart illustrating an antenna training procedure between the station and corresponding station and relay device.
  • the station and corresponding station perform antenna training through a direct route in operation S200.
  • One station from among the station and corresponding station requests the antenna training of the direct route and the stations perform the antenna training.
  • a device that requests the antenna training for example, a first station, may transmit a relay set request command to a second station (corresponding station) using a Relay IE. Then, the second station may transmit a relay set response command to the first station.
  • the stations and relay device perform antenna training in operation
  • the first station may request the antenna training with the relay device.
  • the antenna training between the stations and relay device may include a first antenna training through a first relay route between a first station and relay device and a second relay route through a second relay route between the second station and relay device.
  • the antenna training between the stations and the relay device may be classified into a sequential training and a parallel training according to a performance order of the first antenna training and the second antenna training.
  • the sequential training is a method that the first antenna training and the second training with respect to the first relay route and the second relay route are sequentially performed.
  • a device that requests antenna training of the direct route for example, the first station, performs antenna training with the relay device and then the second station may perform antenna training with the relay device. That is, after the first antenna training is performed, the second antenna training is performed. Also, it is possible to perform the first antenna training after the second antenna training is performed.
  • the parallel training is a method that the first antenna training and the second antenna training with respect to the first relay route and the second relay route are simultaneously performed.
  • the antenna training between a device that requests the antenna training, for example, the first station, and the relay device is simultaneously performed together with the antenna training between the second station and the relay device.
  • the relay device needs two modems since the relay device simultaneously performs antenna training with the station and corresponding station.
  • the first station transmits a relay complete request command to the second station using a Relay IE. Then, the second station transmits a relay complete response command to the first station after the antenna training with the relay device is completed. Through transmitting/receiving a complete command with respect to the antenna training between stations, the antenna training procedure between the stations and relay device is completed.
  • a station of the present invention may communicate through an alternative route using a relay device when a direct route between stations is interrupted.
  • an alternative route selecting method of the station includes an explicit method that uses relay switch command and an implicit method that uses a time of communication being interrupted without using the relay switch command.
  • FIG. 11 illustrates an explicit method that selects an alternative route using a relay switch message according to an example embodiment.
  • the explicit method is a method that switches a route using a relay switch command between stations. That is, when a device that requests antenna training with a direct route, for example, a first station, transmits data and does not receive more than a certain number of ACKs with respect to the data from a second station, the first station transmits a relay switch request command to the second station through the alternative route. In this instance, the first station may perform transmission in an omni-directional transmission.
  • the second station When the second station does not receive data from the first station through the direct route, the second station adjusts a beam to a relay device that is recognized as a result of the antenna training. Subsequently, after receiving the relay switch request command, the second station transmits the relay switch response command including detour time IE indicating a point in time when the alternative route will be used to the first station. In this instance, the second station performs relay switching and uses the alternative route through a relay device from the detour time.
  • the first station receives the relay switch response command and determines a point of the time when the alternative route will be used through the relay device using the detour time IE included in the command. When data communication through the alternative route is unavailable at the determined detour time, the first station may use the direct route again using the relay switch command.
  • the explicit method uses the relay switch, and thereby can reliably select the alternative route and adjust the time when the alternative route will be used.
  • FIG. 12 illustrates an implicit method that selects an alternative route using a time of communication interruption, according to an example embodiment.
  • an implicit method is a method that switches a route using a time of disconnection data communication between stations. That is, when a device that request antenna training of a direct route, for example, a first station, transmits data and does not receive more than a certain number of ACKs with respect to the data from a second station, the first station performs relay switching and transmits/receive data using an alternative route through a relay device.
  • the second station When the second station does not receive data from the first station for a certain time, while periodically receiving data, the second station performs relay switching and immediately transmits/receives the data using the alternative route through the relay device.
  • the first station when, although the first station transmits data using the alternative route through the relay device, the first station does not receive an ACK with respect to the data from the second station, the first station may recheck a selection of the alternative route through the explicit method. Subsequently, when data communication through the alternative route is unavailable, the station uses the direct route again using the relay switch command in the same manner as the explicit method.
  • a relay switching of the first station may be performed prior to a relay switching of the second station, and the reverse is possible.
  • the implicit method may switch the communication route more quickly through not using the relay switch command.
  • a data transceiver may switch the communication route using either the explicit or implicit method.
  • the station when the station is in a sequential multi-route mode, the station may sequentially use the multi-route and naturally use the implicit method. In this case, the station may not use the relay switch command and may not need station switching and antenna setting with respect to the transceiver of a relay device, thereby reducing time for switching communication route. Therefore, when the station is in the sequential multi-route mode, as a time for switching decreases, delay and loss of data transmission may be effectively improved. Accordingly, the sequential multi-route mode of the station may be more effective when the data is delay sensitive information such as video streaming.
  • a data transceiver in the wireless communication system uses multi-route, and thereby can smoothly transmit/receive data even when a route is disconnected. Also, the data transceiver in the wireless communication system uses two routes, and thereby can reduce power consumption of switching. However, a number of routes is not limited thereto, the number of routes may vary as required.
  • the data transmitting/receiving method in the wireless communication system may use an alternative route using a relay device in addition to a direct route between stations, and thereby can smoothly perform communication even when the direct route is disconnected. Also, power consumption for switching may be maximumly reduced through effectively using a multi-route.
  • the data transmitting/receiving method in the wireless communication system may be recorded in computer-readable media including program instructions to implement various operations embodied by a computer.
  • the media may also include, alone or in combination with the program instructions, data files, data structures, and the like.
  • the media and program instructions may be those specially designed and constructed for the purposes of example embodiments, or they may be of the kind well-known and available to those having skill in the computer software arts.
  • Examples of computer-readable media include magnetic media such as hard disks, floppy disks, and magnetic tape; optical media such as CD ROM disks and DVD; magneto-optical media such as floptical disks; and hardware devices that are specially configured to store and perform program instructions, such as read-only memory (ROM), random access memory (RAM), flash memory, and the like.
  • the media may also be a transmission medium such as optical or metallic lines, wave guides, and the like, including a carrier wave transmitting signals specifying the program instructions, data structures, and the like.
  • Examples of program instructions include both machine code, such as produced by a compiler, and files containing higher level code that may be executed by the computer using an interpreter.
  • the described hardware devices may be configured to act as one or more software modules in order to perform the operations of example embodiments.

Landscapes

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

Abstract

L'invention concerne un émetteur-récepteur de données et un procédé associé à utiliser dans un système de communication sans fil, et en particulier, un émetteur-récepteur de données et un procédé associé utilisant des chemins multiples dans le système de communication sans fil. Le procédé d'émission-réception de données utilisant les multiples chemins dans le système de communication sans fil consiste à définir un chemin direct vers une station correspondante et un chemin de relais vers un dispositif de relais; à sélectionner un chemin parmi le chemin direct et le chemin de relais; et à émettre/recevoir les données par le chemin sélectionné.
PCT/KR2008/007177 2007-12-05 2008-12-04 Appareil et procédé pour émettre et recevoir des données dans un système de communication sans fil Ceased WO2009072825A2 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2010536849A JP5290319B2 (ja) 2007-12-05 2008-12-04 無線通信システムにおけるデータ送受信装置および方法
US12/746,514 US8797848B2 (en) 2007-12-05 2008-12-04 Apparatus and method for transmitting and receiving data in wireless communication system
US14/329,623 US9113407B2 (en) 2007-12-05 2014-07-11 Apparatus and method for transmitting and receiving data in wireless communication system
US14/821,854 US9877262B2 (en) 2007-12-05 2015-08-10 Apparatus and method for transmitting and receiving data in wireless communication system
US15/877,069 US10548061B2 (en) 2007-12-05 2018-01-22 Apparatus and method for transmitting and receiving data in wireless communication system
US16/751,590 US20200162992A1 (en) 2007-12-05 2020-01-24 Apparatus and method for transmitting and receiving data in wireless communication system

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
KR20070125697 2007-12-05
KR10-2007-0125697 2007-12-05
KR10-2008-0041976 2008-05-06
KR1020080041976A KR101081732B1 (ko) 2007-12-05 2008-05-06 무선통신 시스템에서의 데이터 송수신 장치 및 방법

Related Child Applications (2)

Application Number Title Priority Date Filing Date
US12/746,514 A-371-Of-International US8797848B2 (en) 2007-12-05 2008-12-04 Apparatus and method for transmitting and receiving data in wireless communication system
US14/329,623 Continuation US9113407B2 (en) 2007-12-05 2014-07-11 Apparatus and method for transmitting and receiving data in wireless communication system

Publications (2)

Publication Number Publication Date
WO2009072825A2 true WO2009072825A2 (fr) 2009-06-11
WO2009072825A3 WO2009072825A3 (fr) 2009-07-23

Family

ID=40718356

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2008/007177 Ceased WO2009072825A2 (fr) 2007-12-05 2008-12-04 Appareil et procédé pour émettre et recevoir des données dans un système de communication sans fil

Country Status (1)

Country Link
WO (1) WO2009072825A2 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102792642A (zh) * 2010-02-05 2012-11-21 韩国电子通信研究院 源装置、目的装置、及中继装置的通信方法
CN102870348A (zh) * 2010-03-05 2013-01-09 韩国电子通信研究院 宽频带近距离无线通信装置及方法
GB2500410A (en) * 2012-03-21 2013-09-25 Renesas Mobile Corp Swapping an actual channel on a secondary link with a shadow channel on a primary link with when the secondary link is no longer available
WO2014104068A1 (fr) * 2012-12-28 2014-07-03 株式会社Ｎｔｔドコモ Station de base sans fil, dispositif routeur et station mobile
GB2524067A (en) * 2014-03-13 2015-09-16 Canon Kk Method and device for configuring communication links in a communication network

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6665521B1 (en) * 2000-08-17 2003-12-16 Motorola, Inc. Method and apparatus for cooperative diversity
KR100584625B1 (ko) * 2001-05-17 2006-05-30 삼성전자주식회사 안테나 어레이를 포함하는 이동 통신 장치 및 방법
KR20050101693A (ko) * 2004-04-19 2005-10-25 삼성전자주식회사 이동 네트워크에서 손상된 라우팅 경로 복구 방법

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8908550B2 (en) 2010-02-05 2014-12-09 Electronics And Telecommunications Research Institute Communication method among a source device, a destination device and a relay device
US9584212B2 (en) 2010-02-05 2017-02-28 Electronics And Telecommunications Research Institute Communication method for source device, destination device and relay device
JP2013519290A (ja) * 2010-02-05 2013-05-23 エレクトロニクス アンド テレコミュニケーションズ リサーチ インスチチュート ソース装置、デスティネーション装置及びリレイ装置の通信方法
CN102792642B (zh) * 2010-02-05 2016-08-17 韩国电子通信研究院 源装置、目的装置、及中继装置的通信方法
JP2015167364A (ja) * 2010-02-05 2015-09-24 エレクトロニクス アンド テレコミュニケーションズ リサーチ インスチチュートＥｌｅｃｔｒｏｎｉｃｓ Ａｎｄ Ｔｅｌｅｃｏｍｍｕｎｉｃａｔｉｏｎｓ Ｒｅｓｅａｒｃｈ Ｉｎｓｔｉｔｕｔｅ ソース装置、デスティネーション装置及びリレイ装置の通信方法
CN102792642A (zh) * 2010-02-05 2012-11-21 韩国电子通信研究院 源装置、目的装置、及中继装置的通信方法
US9118360B2 (en) 2010-03-05 2015-08-25 Electronics And Telecommunications Research Institute Wideband near field communication apparatus and method
CN105721022A (zh) * 2010-03-05 2016-06-29 韩国电子通信研究院 宽频带近距离无线通信装置及方法
JP2013521738A (ja) * 2010-03-05 2013-06-10 エレクトロニクス アンド テレコミュニケーションズ リサーチ インスチチュート 広帯域近距離無線通信装置及び方法
CN102870348A (zh) * 2010-03-05 2013-01-09 韩国电子通信研究院 宽频带近距离无线通信装置及方法
US9680534B2 (en) 2010-03-05 2017-06-13 Electronics And Telecommunications Research Institute Wideband near field communication method
CN105721022B (zh) * 2010-03-05 2020-05-12 韩国电子通信研究院 宽频带近距离无线通信装置及方法
GB2500410A (en) * 2012-03-21 2013-09-25 Renesas Mobile Corp Swapping an actual channel on a secondary link with a shadow channel on a primary link with when the secondary link is no longer available
JP2014131228A (ja) * 2012-12-28 2014-07-10 Ntt Docomo Inc 無線基地局、ルータ装置及び移動局
WO2014104068A1 (fr) * 2012-12-28 2014-07-03 株式会社Ｎｔｔドコモ Station de base sans fil, dispositif routeur et station mobile
US9788338B2 (en) 2012-12-28 2017-10-10 Ntt Docomo, Inc. Radio base station, router device, and mobile station
GB2524067A (en) * 2014-03-13 2015-09-16 Canon Kk Method and device for configuring communication links in a communication network
GB2524067B (en) * 2014-03-13 2016-09-07 Canon Kk Method and device for configuring communication links in a communication network

Also Published As

Publication number Publication date
WO2009072825A3 (fr) 2009-07-23

Similar Documents

Publication Publication Date Title
US10548061B2 (en) Apparatus and method for transmitting and receiving data in wireless communication system
US10834732B2 (en) Apparatus and method for transmitting and receiving data using multi-path in wireless communication system of distributed MAC
US8094577B2 (en) Apparatus and method for transceiving data using relay device in wireless communication system of centralized MAC
EP2321995B1 (fr) Procédés et appareils pour la commutation entre un canal de base et un canal à 60 ghz
US9419752B2 (en) Transmission opportunity operation of uplink multi-user multiple-input-multiple-output communication in wireless networks
KR101451043B1 (ko) 광대역 채널에서 충돌 해결 방법
CN102792642B (zh) 源装置、目的装置、及中继装置的通信方法
KR20110104550A (ko) 무선 네트워크에서 피어투피어(ｐｅｅｒ ｔｏ ｐｅｅｒ) 연결을 위한 경쟁 기반의 채널 접속을 위한 방법 및 시스템
JP2018509826A (ja) デュアル広帯域チャネルを使用するソフトアクセスポイントマスタモード
US8670440B2 (en) Data transceiving apparatus and method in centralized MAC-based wireless communication system
WO2009072825A2 (fr) Appareil et procédé pour émettre et recevoir des données dans un système de communication sans fil
KR101231376B1 (ko) 분산 매체 접근제어를 사용하는 무선통신 시스템에서 다중 경로를 사용한 데이터 송수신 장치 및 그 방법
US20120182928A1 (en) Wireless internet connection repeater without signal interference
US20180255571A1 (en) Base station apparatus, wireless terminal apparatus, and wireless communication method
KR101330603B1 (ko) 릴레이 기반의 협력 ｍａｃ 프로토콜을 이용한 통신 방법
KR101181577B1 (ko) 중앙 제어식 ｍａｃ 기반의 무선통신 시스템에서 릴레이 디바이스를 이용한 데이터 송수신 장치 및 방법
JP2005167877A (ja) 無線ネットワーク用の信号中継装置及び無線ネットワークにおける信号中継方法
KR20100068589A (ko) 지그비 네트워크에서의 다중 ｐａｎ 중첩 회피 방법
KR101189020B1 (ko) 중앙 제어식 ｍａｃ 기반의 무선통신 시스템에서의 데이터 송수신 장치 및 방법
JP6911789B2 (ja) 無線通信システムおよび無線通信方法
KR101047130B1 (ko) 지그비 데이터의 전송 채널 변경 시스템 및 그 방법
US20250175875A1 (en) Techniques for operating conditional handover and conditional primary secondary cell addition or change
KR100966614B1 (ko) 다중 안테나를 이용한 무선통신 시스템 및 그 통신 방법
HK1182267A1 (zh) 用於多频带无线通信和带宽管理的方法以及设备

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: 08858302

Country of ref document: EP

Kind code of ref document: A2

WWE Wipo information: entry into national phase

Ref document number: 12746514

Country of ref document: US

WWE Wipo information: entry into national phase

Ref document number: 2010536849

Country of ref document: JP

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 08858302

Country of ref document: EP

Kind code of ref document: A2