Method for transmitting and receiving signal in multi-hop relay system

• US 9,112,576 B2
• Filed: 12/24/2009
• Issued: 08/18/2015
• Est. Priority Date: 12/26/2008
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Youn, Ae Ran, Lim, Dong Guk, Kwak, Jin Sam, Ryu, Ki Seon, Han, Jong Young
• Primary Examiner(s): Wang, Fanghwa
• Application Number:
  US12/647,325
• Publication Number:
  US 20100167770A1
• Time in Patent Office: 2,063 Days
• US Class Current: 1/1
• CPC Class Codes: H04B 7/15521 combining by calculations packets received from different stations before transmitting the combined packets as part of network coding network coding aspects for detection or prevention of errors in the information received H04L1/0076; network traffic management with optimizing of information sizing, e.g. header compression, by using assembly and disassembly of packets H04W28/065
• CPC Class Codes: H04B 7/15542 Selecting at relay station its transmit and receive resources selection of wireless resources by user or terminal H04W72/02; arrangements affording multiple use of the transmission path by two-dimensional division of the resources H04L5/0003, or by allocating sub-channels H04L5/003
• CPC Class Codes: H04B 7/15557 Selecting relay station operation mode, e.g. between amplify and forward mode, decode and forward mode or FDD - and TDD mode

Abstract

A first transparent relay station (RS) can receive a signal from a base station (BS) corresponding to superordinate node of the first transparent RS or a second RS corresponding to superordinate non-transparent RS the first transparent RS through a downlink receive zone, and the first transparent RS can transmit the signal received through the downlink receive zone to a mobile station (MS) through a downlink transmit zone, wherein a downlink subframes of the first transparent RS is located the downlink receive zone and the downlink transmit zone in order.

Claims

1. A method for transmitting data at a relay station (RS) in a wireless communication system using a Time Division Duplex (TDD) frame structure, the TDD frame structure comprising a plurality of TDD frames, each of the plurality of TDD frames comprising a downlink (DL) period and an uplink (UL) period, the method comprising:

receiving, by the RS, a subscriber station basic capability response (SBC-RSP) message including mode information of the RS from a base station (BS) during an initial access procedure, the mode information of the RS indicating that a mode of the RS is a transparent mode;

receiving, by the RS, mode change indication information from the BS, the mode change indication information indicates a changed mode and a change timing point,

wherein the changed mode is a non-transparent mode and the change timing point is represented as a frame number of the non-transparent mode;

receiving, by the RS, information related to a starting point of each zone for a RS TDD frame structure of the non-transparent mode;

transceiving, by the RS, signals during a RS TDD frame corresponding to the frame number of the non-transparent mode according to the RS TDD frame structure of the non transparent mode;

based on the information related to the starting point of each zone for the RS TDD frame structure of the non-transparent mode and the frame number of the non-transparent mode,

transmitting, by the RS, data to a mobile station (MS) during a first DL zone of a plurality of DL zones of the DL period in the RS TDD frame,

wherein the first DL zone is located at a beginning of the DL period;

transmitting, by the RS, data to a subordinate RS during a second DL zone of the plurality of DL zones of the DL period in the RS TDD frame;

receiving, by the RS, data from the BS during a third DL zone of the plurality of DL zones of the DL period in the RS TDD frame; and

transmitting, by the RS, data to the MS and BS during a bi-directional zone in the RS TDD frame,

wherein, in each of the plurality of TDD frames, the first DL zone is immediately followed by the second DL zone, a first DL gap zone of the DL period is located between the second DL zone and the third DL zone such that the second DL zone is immediately followed by the first DL gap zone and the first DL gap zone is immediately followed by the third DL zone, a second DL gap zone of the DL period is located between the third DL zone and the bi-directional zone such that the third DL zone is immediately followed by the second DL gap zone and the second DL gap zone is immediately followed by the bi-directional zone.

2. The method of claim 1, wherein the first DL zone is a DL access zone.

3. The method according to claim 1, wherein the second DL zone is a DL transmit zone.

4. The method of claim 1, wherein the third DL zone is a DL receive zone.

5. The method of claim 1, wherein;

the RS is an odd-hop RS; and

the subordinate RS is an even-hop RS.

6. A relay station (RS) configured to transmit data in a wireless communication system using a Time Division Duplex (TDD) frame structure, the TDD frame structure comprising a plurality of TDD frames, each of the plurality of TDD frames comprising a downlink (DL) period and an uplink (UL) period, the relay station comprising:

a radio frequency (RF) device configured to transmit and receive; and

a processor operatively connected to the RF unit and configured to;

receive a subscriber station basic capability response (SBC-RSP) message including mode information of the RS from a base station (BS) during an initial access procedure, the mode information of the RS indicating that a mode of the RS is a transparent mode;

receive mode change indication information from the BS, the mode change indication information indicates a changed mode and a change timing point,

wherein the changed mode is a non-transparent mode and the change timing point is represented as a frame number of the non-transparent mode;

receive information related to a starting point of each zone for a RS TDD frame structure of the non-transparent mode;

transceiver signals during a RS TDD frame corresponding to the frame number of the non-transparent mode according to the RS TDD frame structure of the non-transparent mode;

based on the information related to the starting point of each zone for the RS TDD frame structure of the non-transparent mode and the frame number of the non-transparent mode,

transmit data to a mobile station (MS) during a first DL zone of a plurality of DL zones of the DL period in the RS TDD frame,

wherein the first DL zone is located at a beginning of the DL period;

transmit data to a subordinate RS or the MS during a second DL zone of the plurality of DL zones of the DL period in the RS TDD frame;

receive data from the BS during a third DL zone of the plurality of DL zones of the DL period in the RS TDD frame; and

transmit data to the MS and BS during a bi-directional zone in the RS TDD frame,

wherein, in each of the plurality of TDD frames, the first DL zone is immediately followed by the second DL zone, a first DL gap zone of the DL period is located between the second DL zone and the third DL zone such that the second DL zone is immediately followed by the first DL gap zone and the first DL gap zone is immediately followed by the third DL zone, a second DL gap zone of the DL period is located between the third DL zone and the bi-directional zone such that the third DL zone is immediately followed by the second DL gap zone and the second DL gap zone is immediately followed by the bi-directional zone.