METHOD AND DEVICE FOR SIGNAL TRANSMISSION ON A WIRELESS COMMUNICATIONS SYSTEM

• US 20120099519A1
• Filed: 06/25/2010
• Published: 04/26/2012
• Est. Priority Date: 06/25/2009
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: Kim, Hak Seong, Ahn, Joon Kui, Seo, Han Byul, Kim, Byoung Hoon, Kim, Ki Jun
• Granted Patent: US 9,014,082 B2
• Time in Patent Office: Days
• US Class Current: 370/315
• CPC Class Codes: H04L 5/00 Arrangements affording multiple use of the transmission path
• CPC Class Codes: H04L 5/0007 the frequencies being orthogonal, e.g. OFDM(A), DMT
• CPC Class Codes: H04L 5/0044 allocation of payload
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/27 between access points

Abstract

A method for signal transmission in a wireless communication system is provided. The method includes: transmitting backhaul resource allocation information by a base station to a relay node; decoding the backhaul resource allocation information by the relay node; and transmitting backhaul downlink control information and backhaul downlink data by the base station to the relay node, wherein a start position of a symbol for transmitting the backhaul downlink control information is fixed to a specific symbol of a backhaul link subframe, and the backhaul resource allocation information includes information on a radio resource for transmitting the backhaul downlink data.

Claims

1. A method for signal transmission in a wireless communication system, the method comprising:

transmitting backhaul resource allocation information by a base station to a relay node;

decoding the backhaul resource allocation information by the relay node; and

transmitting backhaul downlink control information and backhaul downlink data by the base station to the relay node,

wherein a start position of a symbol for transmitting the backhaul downlink control information is fixed to a specific symbol of a backhaul link subframe, and the backhaul resource allocation information includes information on a radio resource for transmitting the backhaul downlink data.

2. The method of claim 1, wherein the backhaul resource allocation information is transmitted using a higher layer signal.

3. The method of claim 2, wherein the backhaul resource allocation information is transmitted using a radio resource control (RRC) message.

4. The method of claim 1, wherein the start position of the symbol for transmitting the backhaul downlink control information is any one of 3^rd, 4^th, and 5^th symbols in the backhaul link subframe.

5. The method of claim 1, wherein the backhaul resource allocation information includes information on a symbol at which a radio resource for transmitting the backhaul downlink data starts or information on a length of the radio resource in a time domain.

6. The method of claim 1, wherein the information on the radio resource for transmitting the backhaul downlink data indicates a symbol contiguously located next to the symbol for transmitting the backhaul downlink control information as a start symbol of a radio resource for transmitting the backhaul downlink data, in a frequency band in which the backhaul downlink control information is transmitted.

7. The method of claim 6, wherein if the specific symbol is the 4^th symbol of the backhaul link subframe, the start symbol of the radio resource for transmitting the backhaul downlink data is the 5^th symbol of the backhaul link subframe.

8. The method of claim 1, wherein the information on the radio resource for transmitting the backhaul downlink data indicates a symbol located ahead of the symbol for transmitting the backhaul downlink control information as the start symbol of the radio resource for transmitting the backhaul downlink data, with respect to a frequency band in which the backhaul downlink control information is not transmitted among frequency bands allocated to the relay node.

9. The method of claim 1, wherein a radio resource region in which the backhaul downlink control information is transmitted includes one or more symbols in a time domain.

10. The method of claim 9, wherein when the radio resource region in which the backhaul downlink control information is transmitted includes a symbol located in a first slot of a backhaul link subframe and a symbol located in a second slot, a backhaul downlink grant is transmitted in the symbol located in the first slot, and a backhaul uplink grant is transmitted in the symbol located in the second slot.

11. A relay node comprising:

a radio frequency (RF) unit for transmitting and receiving a radio signal; and

a processor coupled to the RF unit,

wherein the processor receives backhaul resource allocation information from a base station, decodes the backhaul resource allocation information, and receives backhaul downlink control information and backhaul downlink data from the base station, wherein a start position of a symbol for transmitting the backhaul downlink control information is fixed to a specific symbol of a backhaul link subframe, and the backhaul resource allocation information includes information on a radio resource for transmitting the backhaul downlink data.