Method and apparatus for wireless resource allocation for relay in wireless communication system
First Claim
1. A method of allocating a radio resource for a relay station in a wireless communication system, the method comprising:
- transmitting configuration information through a higher layer signal, the configuration information including information regarding an orthogonal frequency division multiplexing (OFDM) symbol at which a relay zone begins;
allocating the relay zone to the relay station in a subframe based on the configuration information; and
transmitting a relay control channel to the relay station in the relay zone,wherein the subframe comprises a plurality of OFDM symbols in a time domain and a plurality of subcarriers in a frequency domain,wherein the relay zone comprises a subset of the plurality of OFDM symbols in the time domain and a portion of the plurality of subcarriers in the frequency domain,wherein the configuration information indicates an OFDM symbol from among a second OFDM symbol, a third OFDM symbol and a fourth OFDM symbol of the plurality of OFDM symbols of the subframe, andwherein the relay control channel is transmitted from the fourth OFDM symbol of the subframe.
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Abstract
A method of allocating a radio resource for a relay station in a wireless communication system is disclosed. The method comprise allocating a relay zone to the relay station in a subframe and transmitting a relay control channel to the relay station by using the relay zone, wherein the subframe comprises a plurality of orthogonal frequency division multiplexing (OFDM) symbols in a time domain and a plurality of subcarriers in a frequency domain, wherein the subframe is divided into a user zone used by a user equipment in a cell and the relay zone used by the relay station, and wherein the relay zone comprises some of the plurality of subcarriers. According to the present invention, a subframe structure provides backward compatibility with a legacy wireless communication system. A relay station can effectively find a radio resource allocated to the relay station, thereby decreasing a decoding time.
21 Citations
3 Claims
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1. A method of allocating a radio resource for a relay station in a wireless communication system, the method comprising:
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transmitting configuration information through a higher layer signal, the configuration information including information regarding an orthogonal frequency division multiplexing (OFDM) symbol at which a relay zone begins; allocating the relay zone to the relay station in a subframe based on the configuration information; and transmitting a relay control channel to the relay station in the relay zone, wherein the subframe comprises a plurality of OFDM symbols in a time domain and a plurality of subcarriers in a frequency domain, wherein the relay zone comprises a subset of the plurality of OFDM symbols in the time domain and a portion of the plurality of subcarriers in the frequency domain, wherein the configuration information indicates an OFDM symbol from among a second OFDM symbol, a third OFDM symbol and a fourth OFDM symbol of the plurality of OFDM symbols of the subframe, and wherein the relay control channel is transmitted from the fourth OFDM symbol of the subframe. - View Dependent Claims (2)
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3. A method of monitoring a relay control channel of a relay station in a wireless communication system, the method comprising:
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receiving configuration information through a higher layer signal, the configuration information including information regarding an orthogonal frequency division multiplexing (OFDM) symbol at which a relay zone begins; detecting a relay control channel by monitoring the relay zone in a subframe based on the configuration information; and receiving data of the relay station through a data channel indicated by a radio resource allocation of the detected relay control channel, wherein the subframe comprises a plurality of OFDM symbols in a time domain and a plurality of subcarriers in a frequency domain, wherein the relay zone comprises a subset of the plurality of OFDM symbols in the time domain and a portion of the plurality of subcarriers in the frequency domain, wherein the configuration information indicates an OFDM symbol from among a second OFDM symbol, a third OFDM symbol and a fourth OFDM symbol of the plurality of OFDM symbols of the subframe, and wherein the relay control channel is transmitted from the fourth OFDM symbol of the subframe.
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Specification