OFDMA with adaptive subcarrier-cluster configuration and selective loading
First Claim
1. A method for subcarrier selection for a system employing orthogonal frequency division multiple access (OFDMA) comprising:
- a subscriber measuring channel and interference information for a plurality of subcarriers based on pilot symbols received from a base station;
the subscriber selecting a set of candidate subcarriers;
the subscriber providing feedback information on the set of candidate subcarriers to the base station; and
the subscriber receiving an indication of subcarriers of the set of subcarriers selected by the base station for use by the subscriber.
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Accused Products
Abstract
A method and apparatus for subcarrier selection for systems is described. In one embodiment, the system employs orthogonal frequency division multiple access (OFDMA). In one embodiment, a method for subcarrier selection comprises each of multiple subscribers measuring channel and interference information for subcarriers based on pilot symbols received from a base station, at least one of subscribers selecting a set of candidate subcarriers, providing feedback information on the set of candidate subcarriers to the base station, and the one subscriber receiving an indication of subcarriers of the set of subcarriers selected by the base station for use by the one subscriber.
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Citations
62 Claims
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1. A method for subcarrier selection for a system employing orthogonal frequency division multiple access (OFDMA) comprising:
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a subscriber measuring channel and interference information for a plurality of subcarriers based on pilot symbols received from a base station;
the subscriber selecting a set of candidate subcarriers;
the subscriber providing feedback information on the set of candidate subcarriers to the base station; and
the subscriber receiving an indication of subcarriers of the set of subcarriers selected by the base station for use by the subscriber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. An apparatus comprising:
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a plurality of subscribers in a first cell to generate feedback information indicating clusters of subcarriers desired for use by the plurality of subscribers; and
a first base station in the first cell, the first base station performing subcarrier allocation for OFDMA to allocate OFDMA subcarriers in clusters to the plurality of subscribers based on inter-cell interference avoidance and intra-cell traffic load balancing in response to the feedback information.
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30. An apparatus comprising:
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a plurality of subscribers in a first cell to generate feedback information indicating clusters of subcarriers desired for use by the plurality of subscribers; and
a first base station in the first cell, the first base station to allocate OFDMA subcarriers in clusters to the plurality of subscribers;
each of a plurality of subscribers to measure channel and interference information for the plurality of subcarriers based on pilot symbols received from the first base station and at least one of the plurality of subscribers to select a set of candidate subcarriers from the plurality of subcarriers, and the one subscriber to provide feedback information on the set of candidate subcarriers to the base station and to receive an indication of subcarriers from the set of subcarriers selected by the first base station for use by the one subscriber. - View Dependent Claims (31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 59)
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58. A method comprising:
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the base station allocating a first portion of the subcarriers to establish a data link between the base station and the subscriber; and
thenthe base station allocating a second portion of the subcarriers to the subscriber to increase communication bandwidth.
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60. A base station comprising:
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means for allocating a first portion of the subcarriers to establish a data link between the base station and the subscriber; and
means for allocating a second portion of the subcarriers to the subscriber to increase communication bandwidth. - View Dependent Claims (61)
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62. An apparatus comprising:
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a plurality of subscribers in a cell; and
a base station in the cell, the base station to perform subcarrier allocation for OFDMA to allocate OFDMA subcarriers in clusters to the plurality of subscribers based on inter-cell interference avoidance and intra-cell traffic load balancing.
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Specification