Apparatus and method for allocating subchannels adaptively according to frequency reuse rates in an orthogonal frequency division multiple access system
First Claim
1. A method of allocating one or more subchannels to one or more mobile stations (MSs) in an orthogonal frequency division multiple access (OFDMA) mobile communication system in which a first base station (BS) communicates with a plurality of MSs within a cell area of the BS and a radio network controller (RNC) controls radio resources for a plurality of BSs including the first BS, the method comprising the steps of:
- receiving from the plurality of MSs information related to an optimum frequency reuse factor (FRF) and a modulation scheme;
calculating the number of subchannels required for each FRF according to the received information;
allocating subchannels to the first BS for each FRF, based on the calculated subchannel numbers from the first BS and neighboring BSs; and
allocating the allocated subchannels to the MSs.
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Accused Products
Abstract
An apparatus and method for adaptively allocating subchannels according to frequency reuse rates in an OFDMA system are provided. To allocate one or more subchannels to one or more MSs, information related to an optimum FRF and a modulation scheme is received from the plurality of MSs, the number of subchannels required for each FRF is calculated according to the received information, subchannels are allocated to the BS for each FRF, based on the calculated subchannel numbers from the BS and neighboring BSs, and the allocated subchannels are allocated to the MSs.
73 Citations
16 Claims
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1. A method of allocating one or more subchannels to one or more mobile stations (MSs) in an orthogonal frequency division multiple access (OFDMA) mobile communication system in which a first base station (BS) communicates with a plurality of MSs within a cell area of the BS and a radio network controller (RNC) controls radio resources for a plurality of BSs including the first BS, the method comprising the steps of:
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receiving from the plurality of MSs information related to an optimum frequency reuse factor (FRF) and a modulation scheme;
calculating the number of subchannels required for each FRF according to the received information;
allocating subchannels to the first BS for each FRF, based on the calculated subchannel numbers from the first BS and neighboring BSs; and
allocating the allocated subchannels to the MSs. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An apparatus for allocating one or more subchannels to one or more mobile stations (MSs) in an orthogonal frequency division multiple access (OFDMA) mobile communication system in which a first base station (BS) communicates with a plurality of MSs within a cell area of the BS and a radio network controller (RNC) controls radio resources for a plurality of BSs including the first BS, the apparatus comprising:
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a BS subchannel allocator for receiving from the plurality of MSs information related to an optimum frequency reuse factor (FRF) and a modulation scheme, calculating the number of subchannels required for each FRF according to the received information, and allocating subchannels to the first BS for each FRF, based on the calculated subchannel numbers from the first BS and neighboring BSs; and
an MS subchannel allocator for allocating the allocated subchannels to the MSs. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification