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US 7,606,574 B2Granted
Method and apparatus for implementing spatial division multiple access (“SDMA”) to communicate user data and backhaul data with the same wireless time-frequency resources
AssigneeMotorola, Inc.
InventorsBrian K. Classon, Michael D. Kotzin, Frederick W. Vook
Life of this patent
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Abstract
A system [100] includes a base station [105] to communicate wireless data with at least one user terminal [125, 130] within a cell serviced by the base station [105]. A central backhaul access point [135] communicates wireless backhaul data with the base station [105]. At least a first portion of the wireless data and a second portion of the wireless backhaul data is communicated via Spatial Division Multiple Access (“SDMA”), and the first portion of the wireless data utilizes at least some same time-frequency resources as the second portion of the wireless backhaul data.
Claims14
A method, comprising:
- communicating wireless backhaul data between a base station and a central backhaul access point;
- communicating wireless data between the base station and at least one user terminal within a cell serviced by the base station;
- allocating a first amount of time-frequency resources for both the wireless data and the wireless backhaul data, and allocating a second amount of the time-frequency resources for only one of the wireless data and the wireless backhaul data, wherein the at least some same time-frequency resources comprise at least part of the first amount;
- and
- wherein at least a first portion of a data frame including Orthogonal Frequency-Division Multiplexing (“OFDM”) symbols for at least wireless backhaul data and a second portion of the data frame for the wireless data is communicated via Spatial Division Multiple Access (“SDMA”), and the first portion of the data frame utilizes at least some same time-frequency resources as the second portion of the data frame and wherein the first amount and the second amount of the time-frequency resources are contiguous sets of OFDM symbols.
2 more elements
A system, comprising:
- a base station to communicate wireless data with at least one user terminal within a cell serviced by the base station;
- a central backhaul access point to communicate wireless backhaul data with the base station;
- and
- wherein a first amount of time-frequency resources is allocated for both the wireless data and the wireless backhaul data, and a second amount of the time-frequency resources is allocated for only one of the wireless data and the wireless backhaul data, wherein the at least some same time-frequency resources comprise at least part of the first amount;
- and
- wherein at least a first portion of a data frame including Orthogonal Frequency-Division Multiplexing (“OFDM”) symbols for at least wireless backhaul data and a second portion of the data frame for the wireless data is communicated via Spatial Division Multiple Access (“SDMA”), and the first portion of the data frame utilizes at least some same time-frequency resources as the second portion of the data frame and wherein the first amount and the second amount of the time-frequency resources are contiguous sets of OFDM symbols.
3 more elements
A base station, comprising:
- a processor to process wireless data and wireless backhaul data;
- and
- a transceiver to communicate the wireless data with at least one user terminal within a cell serviced by the base station, and to communicate the wireless backhaul data with a central backhaul access point;
- and
- wherein a first amount of time-frequency resources is allocated for both the wireless data and the wireless backhaul data, and a second amount of the time-frequency resources is allocated for only one of the wireless data and the wireless backhaul data, wherein the at least some same time-frequency resources comprise at least part of the first amount;
- and
- wherein at least a first portion of a data frame including Orthogonal Frequency-Division Multiplexing (“OFDM”) symbols for at least wireless backhaul data and a second portion of the data frame for the wireless data is communicated via Spatial Division Multiple Access (“SDMA”), and the first portion of the data frame utilizes at least some same time-frequency resources as the second portion of the data frame and wherein the first amount and the second amount of the time-frequency resources are contiguous sets of OFDM symbols.
4 more elements
Dependencies are inferred from the claim text.