Multi-carrier communication with time division multiplexing and carrier-selective loading
First Claim
Patent Images
1. A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system, comprising:
- associating at least one cluster in a first set of clusters of subcarriers for use in communication with a first subscriber;
associating at least one cluster in a second set of clusters of subcarriers for use in communication with a second subscriber; and
for each cluster associated for use in communication with the first subscriber and the second subscriber, multiplexing a usage of said each cluster between the first subscriber during a first time division and the second subscriber during a second time division,wherein multiplexing includes assigning said each cluster to a one of the first subscriber and the second subscriber that has a highest transmission rate of transmission rates of subscribers associated with said each cluster.
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Abstract
A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system is described. At least one cluster in a first and second set of clusters of subcarriers is associated for use in communication with a first and second subscriber, respectively. Then, for each cluster associated for use in communication with the first subscriber and the second subscriber, usage of that cluster is multiplexed between the first subscriber during a first time division and the second subscriber during a second time division.
193 Citations
31 Claims
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1. A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system, comprising:
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associating at least one cluster in a first set of clusters of subcarriers for use in communication with a first subscriber; associating at least one cluster in a second set of clusters of subcarriers for use in communication with a second subscriber; and for each cluster associated for use in communication with the first subscriber and the second subscriber, multiplexing a usage of said each cluster between the first subscriber during a first time division and the second subscriber during a second time division, wherein multiplexing includes assigning said each cluster to a one of the first subscriber and the second subscriber that has a highest transmission rate of transmission rates of subscribers associated with said each cluster. - View Dependent Claims (2, 3)
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4. A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system, comprising:
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associating at least one cluster in a first set of clusters of subcarriers for use in communication with a first subscriber; associating at least one cluster in a second set of clusters of subcarriers for use in communication with a second subscriber; and for each cluster associated for use in communication with the first subscriber and the second subscriber, multiplexing a usage of said each cluster between the first subscriber during a first time division and the second subscriber during a second time division, wherein multiplexing includes assigning said each cluster to a one of the first subscriber and the second subscriber based on a probability that the cluster will be used by the first subscriber and a probability that the cluster will be used by the second subscriber.
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5. A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system, comprising;
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associating at least one cluster in a first set of clusters of subcarriers for use in communication with a first subscriber; associating at least one cluster in a second set of clusters of subcarriers for use in communication with a second subscriber; and for each cluster associated for use in communication with the first subscriber and the second subscriber, multiplexing a usage of said each cluster between the first subscriber during a first time division and the second subscriber during a second time division, wherein associating at least one cluster in the first set for use in communication with the first subscriber includes selecting the at least one cluster based on a SINR and a traffic load of each one of the at least one cluster. - View Dependent Claims (6, 7)
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8. A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system, comprising:
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associating at least one cluster in a first set of clusters of subcarriers for use in communication with a first subscriber; associating at least one cluster in a second set of clusters of subcarriers for use in communication with a second subscriber; and for each cluster associated for use in communication with the first subscriber and the second subscriber, multiplexing a usage of said each cluster between the first subscriber during a first time division and the second subscriber during a second time division, wherein multiplexing includes assigning said each cluster to a one of the first subscriber and the second subscriber based on a quality of service requirement of the first subscriber and a quality of service requirement of the second subscriber. - View Dependent Claims (9)
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10. A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system, comprising:
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associating at least one cluster in a first set of clusters of subcarriers for use in communication with a first subscriber; associating at least one cluster in a second set of clusters of subcarriers for use in communication with a second subscriber; and for each cluster associated for use in communication with the first subscriber and the second subscriber, multiplexing a usage of said each cluster between the first subscriber during a first time division and the second subscriber during a second time division, wherein associating at least one cluster in the first set for use in communication with the first subscriber includes selecting a subset of the first set having a least instantaneous delay ratio for the first subscriber of any instantaneous delay ratio for the first subscriber of any subset of the first set.
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11. A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system, comprising:
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associating at least one cluster in a first set of clusters of subcarriers for use in communication with a first subscriber; associating at least one cluster in a second set of clusters of subcarriers for use in communication with a second subscriber; and for each cluster associated for use in communication with the first subscriber and the second subscriber, multiplexing a usage of said each cluster between the first subscriber during a first time division and the second subscriber during a second time division, wherein associating at least one cluster in the first set for use in communication with the first subscriber includes selecting a subset of the first set having a least statistical delay ratio for the first subscriber of any statistical delay ratio for the first subscriber of any subset of the first set.
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12. A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system, comprising:
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associating at least one cluster in a first set of clusters of subcarriers for use in communication with a first subscriber; associating at least one cluster in a second set of clusters of subcarriers for use in communication with a second subscriber; and for each cluster associated for use in communication with the first subscriber and the second subscriber, multiplexing a usage of said each cluster between the first subscriber during a first time division and the second subscriber during a second time division. wherein multiplexing includes; loading data associated with the first subscriber into a queue associated with said each cluster upon determining that a data packet is present in a queue associated with the first subscriber; and loading data associated with the second subscriber into the queue associated with said each cluster upon determining that a data packet is present in a queue associated with the second subscriber. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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21. A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system, comprising:
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associating at least one cluster in a first set of clusters of subcarriers for use in communication with a first subscriber; associating at least one cluster in a second set of clusters of subcarriers for use in communication with a second subscriber; and for each cluster associated for use in communication with the first subscriber and the second subscriber, multiplexing a usage of said each cluster between the first subscriber during a first time division and the second subscriber during a second time division, wherein multiplexing includes informing the first subscriber of a first time division multiplexing index, corresponding to the first subscriber, for said each cluster, during an allocation phase. - View Dependent Claims (22, 23)
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24. A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system, comprising:
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associating at least one cluster in a first set of clusters of subcarriers for use in communication with a first subscriber; associating at least one cluster in a second set of clusters of subcarriers for use in communication with a second subscriber; and for each cluster associated for use in communication with the first subscriber and the second subscriber, multiplexing a usage of said each cluster between the first subscriber during a first time division and the second subscriber during a second time division, wherein multiplexing includes embedding a time division multiplexing index, corresponding to the first subscriber, in a segment of said each cluster intended for the first subscriber. - View Dependent Claims (25, 26)
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27. A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system, comprising:
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associating at least one cluster in a first set of clusters of subcarriers for use in communication with a first subscriber; associating at least one cluster in a second set of clusters of subcarriers for use in communication with a second subscriber; and for each cluster associated for use in communication with the first subscriber and the second subscriber, multiplexing a usage of said each cluster between the first subscriber during a first time division and the second subscriber during a second time division, wherein multiplexing includes transmitting, with data intended for the first subscriber that has been loaded into a segment of said each cluster, a preamble for the segment that includes a time division multiplexing index, corresponding to the first subscriber, for said each cluster. - View Dependent Claims (28)
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29. A method for subcarrier allocation and loading for a multi-carrier, multi-subscriber system, comprising:
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associating at least one cluster in a first set of clusters of subcarriers for use in communication with a first subscriber; associating at least one cluster in a second set of clusters of subcarriers for use in communication with a second subscriber; and for each cluster associated for use in communication with the first subscriber and the second subscriber, multiplexing a usage of said each cluster between the first subscriber during a first time division and the second subscriber during a second time division, wherein multiplexing includes scrambling data, intended for the first subscriber, using a scrambling sequence corresponding to a time division multiplexing index, corresponding to the first subscriber, for said each cluster. - View Dependent Claims (30)
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31. A base station, comprising:
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user data queues to store data transmitted from subscribers; multiplexing logic coupled with the user data queues to receive feedback information from subscribers, to allocate, based on the feedback information, one or more clusters of subcarriers to each subscriber, and to time division multiplex data from the user data queues into cluster data queues corresponding to those of the clusters allocated to more than one subscriber; and the cluster data queues coupled with the multiplexing logic to receive data from the multiplexing logic and store the data for transmission on corresponding clusters of subcarriers.
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Specification