Apparatus and method for allocating a dedicated access zone to relay station (RS) in broadband wireless access (BWA) communication system
First Claim
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1. A method of a Relay Station (RS) in a wireless communication system, the method comprising:
- relaying communications between a Base Station (BS) and a Mobile Station (MS);
determining whether a dedicated resource is necessary for the communications with the MS, based on channel conditions between the RS and the MS;
generating a dedicated access zone request message requesting the BS to allocate a dedicated access zone to the RS, the dedicated access zone request message including bandwidth information;
transmitting the dedicated access zone request message to the BS;
receiving a dedicated access zone allocation message from the BS;
determining whether a dedicated resource, designated by the allocation message, is allocated to the RS; and
scheduling the dedicated resource based on the dedicated resource zone allocation message received from the BS,wherein the dedicated access zone comprises resources which the RS only uses for a dedicated communication between the RS and the MS, and wherein the determining of whether the dedicated resource is necessary comprises determining whether a Carrier to Interference plus Noise Ratio (CINR) of a channel between the RS and MS exceeds a threshold.
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Abstract
An apparatus and a method for allocating a dedicated access zone to a Relay Station (RS) in a multihop relay Broadband Wireless Access (BWA) communication system are provided. A communicating method of the RS includes relaying communications between a Base Station (BS) and a Mobile Station (MS), determining whether a dedicated resource is necessary for the communications with the MS, when the dedicated resource is necessary, generating a dedicated access zone request message which comprises necessary bandwidth information and transmitting the dedicated access zone request message to the BS.
8 Citations
27 Claims
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1. A method of a Relay Station (RS) in a wireless communication system, the method comprising:
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relaying communications between a Base Station (BS) and a Mobile Station (MS); determining whether a dedicated resource is necessary for the communications with the MS, based on channel conditions between the RS and the MS; generating a dedicated access zone request message requesting the BS to allocate a dedicated access zone to the RS, the dedicated access zone request message including bandwidth information; transmitting the dedicated access zone request message to the BS; receiving a dedicated access zone allocation message from the BS; determining whether a dedicated resource, designated by the allocation message, is allocated to the RS; and scheduling the dedicated resource based on the dedicated resource zone allocation message received from the BS, wherein the dedicated access zone comprises resources which the RS only uses for a dedicated communication between the RS and the MS, and wherein the determining of whether the dedicated resource is necessary comprises determining whether a Carrier to Interference plus Noise Ratio (CINR) of a channel between the RS and MS exceeds a threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of a Base Station (BS) in a wireless communication system, the method comprising:
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determining whether dedicated resource allocation is necessary for an access link in which a Relay Station (RS) and a Mobile Station (MS) communicate with each other, based on channel conditions between the RS and the MS; determining a resource to be allocated to the RS; generating a dedicated access zone allocation message which comprises the determined dedicated resource information; and transmitting the dedicated access zone allocation message to the RS, wherein the dedicated resource, which are allocated to the RS, are scheduled by the RS, wherein the dedicated access zone comprises resources which the RS only uses for a dedicated communication between the RS and the MS, and wherein the determining of whether the dedicated resource is necessary comprises determining whether a Carrier to Interference plus Noise Ratio (CINR) of a channel between the RS and MS exceeds a threshold. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17)
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18. An apparatus for a Relay Station (RS) in a wireless communication system, the apparatus comprising:
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a controller for controlling a relay service between a Base Station (BS) and a Mobile Station (MS) and for determining, based on channel conditions between the RS and the MS, whether a dedicated resource is necessary for the communications with the MS; a message generator for generating a dedicated access zone request message requesting the BS to allocate a dedicated access zone to the RS, the dedicated access zone request message including bandwidth information; a transmitter for transmitting the dedicated access zone request message to the BS; and a receiver for receiving a dedicated access zone allocation message from the BS, wherein the controller determines whether a dedicated resource designated by the allocation message is allocated to the RS, and schedules the dedicated resource based on the dedicated resource zone allocation message received from the BS, and wherein the dedicated access zone comprises resources which the RS only uses for a dedicated communication between the RS and the MS, and wherein the controller determines whether the dedicated resource is necessary according to whether a Carrier to Interference plus Noise Ratio (CINR) of a channel between the RS and MS exceeds a threshold. - View Dependent Claims (19, 20, 21, 22)
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23. An apparatus for a Base Station (BS) in a wireless communication system, the apparatus comprising:
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a controller for determining whether dedicated resource allocation is necessary for an access link in which a Relay Station (RS) and a Mobile Station (MS) communicate with each other based on channel conditions between the RS and the MS, and for determining a dedicated resource to be allocated to the RS; a message generator for generating a dedicated access zone allocation message which comprises the determined dedicated resource information; and a transmitter for transmitting the dedicated access zone allocation message to the RS, wherein the dedicated resource, which are allocated to the RS, are scheduled by the RS, wherein the dedicated access zone comprises resources which the RS only uses for a dedicated communication between the RS and the MS, and wherein the dedicated resource allocation is determined to be necessary when a Carrier to Interference plus Noise Ratio (CINR) of a channel between the RS and MS exceeds a threshold. - View Dependent Claims (24, 25, 26, 27)
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Specification