Relay frame structure for supporting transparent and bidirectional relays

• US 8,577,285 B2
• Filed: 08/14/2012
• Issued: 11/05/2013
• Est. Priority Date: 11/05/2008
• Status: Active Grant

• Current Assignee: Taissa Research LLC
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Sun, Li-Hsiang, Lee, Ki-Dong
• Primary Examiner(s): Ferguson, Keith
• Application Number:
  US13/585,747
• Publication Number:
  US 20120307694A1
• Time in Patent Office: 448 Days
• Field of Search: 455/11.1, 455/7.24, 455/422.1, 455/403, 455/426.1, 455/426.2, 455/500, 455/517, 455/445, 455/550.1, 370/310, 370/315, 370/324, 370/326, 370/329, 370/343
• US Class Current: 455/11.1
• 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 7/15592 Adapting at the relay station communication parameters for supporting cooperative relaying, i.e. transmission of the same data via direct - and relayed path cooperative diversity H04B7/024
• CPC Class Codes: H04B 7/2606 Arrangements for base station coverage control, e.g. by using relays in tunnels

Abstract

A method for transmitting data includes receiving at a first relay station first data from a parent station during a downlink period comprising a plurality of downlink zones. A network coding zone is one of the plurality of downlink zones and is located at an end of the downlink period, and the first data is received in at least one of the plurality of downlink zones other than the network coding zone. The method further includes receiving at the first relay station from a child station, second data during an uplink zone, and transmitting third data by the first relay station to the child station, during the network coding zone using a resource. The method further includes transmitting the third data to the parent station, during the network coding zone, using the resource. The third data results from the first data being effectively logically XOR-ed to the second data.

Claims

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

communicating with at least one of a child station or a parent station using a TDD frame of the TDD frame structure,

wherein the TDD frame includes a first DL zone of a plurality of DL zones of the DL period, wherein the first DL zone is used by the RS to transmit data to the child station,

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

wherein the TDD frame further includes a second DL zone of the plurality of DL zones of the DL period, wherein the second DL zone is used by the RS to receive data from the parent station and the child station,

wherein the TDD frame further includes a third DL zone of the plurality of DL zones of the DL period, wherein the third DL zone is used by the RS to transmit data to the parent station and the child station,

wherein, in each of the plurality of TDD frames, a first gap zone of the DL period is located between the first DL zone and the second DL zone and a second gap zone of the DL period is located between the second DL zone and the third DL zone.

2. The method of claim 1, wherein the parent station is a base station.

3. The method of claim 1, wherein the first relay station is at least a transparent relay or a bi-directional relay.

4. The method of claim 1, wherein the RS is an odd-hop relay station and the child station is an even-hop relay station or mobile station.

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

a wireless communication unit configured to communicate with at least one of a child station or a parent station using a TDD frame of the TDD frame structure,

wherein the TDD frame includes a first DL zone of a plurality of DL zones of the DL period, wherein the first DL zone is used by the RS to transmit data to the child station,

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

wherein the TDD frame further includes a second DL zone of the plurality of DL zones of the DL period, wherein the second DL zone is used by the RS to receive data from the parent station and the child station,

wherein the TDD frame further includes a third DL zone of the plurality of DL zones of the DL period, wherein the third DL zone is used by the RS to transmit data to the parent station and the child station,

wherein, in each of the plurality of TDD frames, a first gap zone of the DL period is located between the first DL zone and the second DL zone and a second gap zone of the DL period is located between the second DL zone and the third DL zone.