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US 6,904,283 B2Granted
Multi-carrier communications with group-based subcarrier allocation
AssigneeAdaptix, Inc.
InventorsXiaodong Li, Hui Liu, Hujun Yin, Guanbin Xing, Fuqi Mu
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Abstract
A method and apparatus for subcarrier selection for systems is described. In one embodiment, a method for subcarrier selection for a system employing orthogonal frequency division multiple access (OFDMA) comprises partitioning subcarriers into groups of at least one cluster of subcarriers, receiving an indication of a selection by the subscriber of one or more groups in the groups, and allocating at least one cluster in the one or more groups of clusters selected by the subcarrier for use in communication with the subscriber.
Claims119
A method for subcarrier selection for a system employing orthogonal frequency division multiple access (OFDMA) comprising:
- partitioning subcarriers into a plurality of groups of at least one cluster of subcarriers;
- and
- receiving an indication of a selection by a subscriber of one or more groups in the plurality of groups;
- allocating at least one cluster in the one or more groups of clusters selected by the subscriber for use in communication with the subscriber, including selecting the at least one cluster based on a group priority in which the subscriber has a higher priority for use of the group of cluster containing the at least one cluster than at least one other subscriber.
1 more element
A method for subcarrier selection for a system employing orthogonal frequency division multiple access (OFDMA) comprising:
- partitioning subcarriers into a plurality of groups of at least one cluster of subcarriers;
- and
- receiving an indication of a selection by a subscriber of one or more groups in the plurality of groups;
- receiving feedback information on the one or more groups of clusters of subcarriers from the subscriber, and wherein the feedback information comprises a group identifier and SINR value of each cluster within each group;
- and
- allocating at least one cluster in the one or more groups of clusters selected by the subscriber for use in communication with the subscriber.
3 more elements
A method for subcarrier selection for a system employing orthogonal frequency division multiple access (OFDMA) comprising:
- partitioning subcarriers into a plurality of groups of at least one cluster of subcarriers;
- and
- receiving an indication of a selection by a subscriber of one or more groups in the plurality of groups;
- receiving feedback information on the one or more groups of clusters of subcarriers from the subscriber, and wherein the feedback information is compressed using source coding techniques and encoded with error correcting codes;
- and
- allocating at least one cluster in the one or more groups of clusters selected by the subscriber for use in communication with the subscriber.
3 more elements
A method for subcarrier selection for a system employing orthogonal frequency division multiple access (OFDMA) comprising:
- partitioning subcarriers into a plurality of groups of at least one cluster of subcarriers;
- and receiving an indication of a selection by a subscriber of one or more groups in the plurality of groups;
- receiving feedback information on the one or more groups of clusters of subcarriers from the subscriber, and wherein the feedback information comprises a list of candidate cluster groups desired for use by the subscriber and their associated signal plus interference to noise ratio (SINR), the candidate clusters desired for use being a set of all possible clusters with SINRs relatively higher than other clusters in the set of all possible clusters;
- and
- allocating at least one cluster in the one or more groups of clusters selected by the subscriber for use in communication with the subscriber.
2 more elements
A method for subcarrier selection for a system employing orthogonal frequency division multiple access (OFDMA) comprising:
- partitioning subcarriers into a plurality of groups of at least one cluster of subcarriers;
- and
- receiving an indication of a selection by a subscriber of one or more groups in the plurality of groups;
- allocating at least one cluster in the one or more groups of clusters selected by the subscriber for use in communication with the subscriber;
- receiving additional feedback information on the one or more groups of clusters;
- and
- allocating additional clusters to the subscriber.
4 more elements
An apparatus comprising:
- a cluster location controller to receive an indication of a selection by a subscriber of one or more groups a plurality of groups of at least one cluster of subcarriers and to allocate at least one cluster in the one or more groups of clusters selected by the subscriber for use in communication with the subscriber by selecting the at least one cluster based on a group priority in which the subscriber has a higher priority for use of the group of clusters containing the at least one cluster than at least one other subscriber;
- and
- an orthogonal frequency division multiplexing (OFDM) transceiver coupled to the cluster allocation controller to send a notification to the subscriber indicating the at least one cluster in the one or more groups of clusters to be used by the subscriber.
An apparatus comprising:
- a cluster allocation controller
- to receive an indication of a selection by a subscriber of one or more groups in a plurality of groups of at least one cluster of subcarriers and feedback information on the one or more groups of clusters of subcarriers from the subscriber, and wherein the feedback information comprises a group identifier and SINR value of each cluster within each group, and
- to allocate at least one cluster in the one or more groups of clusters selected by the subscriber for use in communication with the subscriber;
- and
- an orthogonal frequency division multiplexing (OFDM) transceiver coupled to the cluster allocation controller to send a notification to the subscriber indicating the at least one cluster in the on or more groups of clusters to be used by the subscriber.
2 more elements
An apparatus comprising:
- a cluster allocation controller
- to receive an indication of a selection by a subscriber of one or more groups in a plurality of groups of at least one cluster of subcarriers and feedback information on the one or more groups of clusters of subcarriers from the subscriber, and wherein the feedback information is compressed using source coding techniques and encoded with error correcting codes, and
- to allocate at least one cluster in the one or more groups of clusters selected by the subscriber for use in communication with the subscriber;
- and
- an orthogonal frequency division multiplexing (OFDM) transceiver coupled to the cluster allocation controller to send a notification to the subscriber indicating the at least one cluster in the one or more groups of clusters to be used by the subscriber.
2 more elements
An apparatus comprising:
- a cluster location controller
- to receive an indication of a selection by a subscriber of one or more groups in a plurality of groups of at least one cluster of subcarriers and feedback information on the one or more groups of clusters of subcarriers from the subscriber, and wherein the feedback information comprises a list of candidate cluster groups desired for use by the subscriber and their associated signal plus interference to noise ratio (SINR), the candidate clusters desired for use being a set of all possible clusters with SINRs relatively higher than other clusters in the set of all possible dust, and
- to allocate at least one cluster in the one or more groups of clusters selected by the subscriber for use in communication with the subscriber;
- and
- an orthogonal frequency division multiplexing (OFDM) transceiver coupled to the cluster allocation controller to send a notification to the subscriber indicating the at least one cluster in the on or more groups of clusters to be used by the subscriber.
2 more elements
An apparatus comprising:
- a cluster allocation controller
- to receive an indication of a selection by a subscriber of one or more groups in a plurality of groups of at least one cluster of subcarriers, and
- to allocate at least one cluster in the one or more groups of clusters selected by the subscriber for use in communication with the subscriber;
- and
- an orthogonal frequency division multiplexing (OFDM) transceiver coupled to the cluster allocation controller to send a notification to the subscriber indicating the at least one cluster in the one or more groups of clusters to be used by the subscriber, wherein the cluster allocation controller is operable to receive additional feedback information on the one or more groups of clusters and allocate additional clusters to the subscriber.
2 more elements
Dependencies are inferred from the claim text.