Radio communication system for selecting a subset of available primary stations
First Claim
1. A radio communication system having physical control channels arranged for the bi-directional transmission of sets of control information between a secondary station and a plurality of primary stations, wherein respective closed-loop power control means are provided for individually adjusting the power of some or all physical control channels, or parts thereof, to which a set of control information is mapped, said closed-loop power control means being utilized to select a subset of primary stations greater than one primary station, selected from the plurality of primary stations, for the transmission of data over at least one data channel between the selected subset of primary stations and the secondary station.
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Accused Products
Abstract
A radio communication system comprises a secondary station (110) having a plurality of communication channels (226a,226b,226c) with a plurality of primary stations (100a,100b,100c). Separate closed loop power control is performed for each of the communication channels (226a,226b, 226c). This enables the optimum primary station for transmission of data to the secondary station (110) to be selected. Parameters derived from operation of each power control loop enable optimum setting of channel parameters for each primary station (100a,100b,100c).
Such an arrangement is particularly suitable for a high speed downlink data service, where the fast selection of the optimum primary station and/or channel parameters improves link robustness and system throughput.
20 Citations
19 Claims
- 1. A radio communication system having physical control channels arranged for the bi-directional transmission of sets of control information between a secondary station and a plurality of primary stations, wherein respective closed-loop power control means are provided for individually adjusting the power of some or all physical control channels, or parts thereof, to which a set of control information is mapped, said closed-loop power control means being utilized to select a subset of primary stations greater than one primary station, selected from the plurality of primary stations, for the transmission of data over at least one data channel between the selected subset of primary stations and the secondary station.
- 6. A primary station for use in a radio communication system having physical control channels arranged for the bi-directional transmission of sets of control information between a secondary station and a plurality of primary stations, and at least one data channel between a selected subset of primary stations greater than one primary station, selected from the plurality of primary stations, and the secondary station for the transmission of data over the at least one data channel, wherein closed-loop power control means are provided for adjusting the power of some or all physical control channels between the plurality of primary stations and the secondary station, or parts thereof, to which a set of control information is mapped, said closed-loop power control means being utilized to select the subset of primary stations.
- 10. A secondary station for use in a radio communication system having physical control channels arranged for the bi-directional transmission of sets of control information between the secondary station and a plurality of primary stations, and at least one data channel between a selected subset of primary stations greater than one primary station, selected from the plurality of primary stations, and the secondary station for the transmission of data over the at least one data channel, wherein closed-loop power control means are provided for adjusting individually the power of some or all physical control channels between the plurality of primary stations and secondary station, or parts thereof, to which a set of control information is mapped, said closed-loop power control means being utilized to select the subset of primary stations.
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17. A method of operating a radio communication system comprising:
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arranging physical control channels arranged for the bi-directional transmission of sets of control information between a secondary station and a plurality of primary stations; arranging at least one data channel between a selected subset of primary stations greater than one primary station, selected from the plurality of primary stations, and the secondary station for the transmission of data over the at least one data channel; operating respective closed-loop power control means for adjusting individually the power of some or all physical control channels, or parts thereof, to which a set of control information is mapped to select the subset of primary stations.
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Specification