WIRELESS SYSTEM
First Claim
1. A method of allocating radio resource within a frame structure in a cellular wireless network, the network comprising a plurality of base stations and a plurality of relay stations, the frame structure comprising a plurality of first radio resource elements for the communication of control data, the method comprising:
- allocating one or more elements of the plurality of first radio resource elements for communication of control data by the base stations; and
allocating one or more different elements of the plurality of first radio resource elements for communication of control data by the relay stations.
3 Assignments
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Accused Products
Abstract
The capacity of a cellular wireless system is increased by operation of base stations or base station sectors arranged to re-use radio resource elements that are used by neighbouring base stations or base station sectors, in conjunction with operation of relay stations, which are similarly arranged to re-use radio resource elements used by neighbouring relay stations, and where the radio resource elements re-used by the relay stations are different to those used by the base stations. The relay stations provide coverage, particularly in the areas at the boundaries between the areas of coverage of base stations that suffer from interference between signals transmitted from the respective base stations. In addition, the relay stations generally increase the average available carrier to interference ratio compared with a system in which base stations alone are deployed. The scheme for the allocation of radio resource elements ensures in particular that interference is avoided between signals transmitted from a base station and signals transmitted from a relay station in radio resource elements allocated to control data.
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Citations
38 Claims
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1. A method of allocating radio resource within a frame structure in a cellular wireless network, the network comprising a plurality of base stations and a plurality of relay stations, the frame structure comprising a plurality of first radio resource elements for the communication of control data, the method comprising:
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allocating one or more elements of the plurality of first radio resource elements for communication of control data by the base stations; and allocating one or more different elements of the plurality of first radio resource elements for communication of control data by the relay stations. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A cellular wireless network comprising a plurality of base stations and a plurality of relay stations, the network being arranged to allocate radio resources within the network in accordance with a frame structure comprising a plurality of first radio resource elements for the transmission of control data,
wherein the base stations are configured so as to transmit control data within one or more elements of the plurality of first radio resource elements and the relay stations are configured so as to transmit control data within one or more different elements of the plurality of first radio resource elements.
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15. A base station for use in a cellular wireless network, the network comprising a plurality of base stations and a plurality of relay stations, the network being arranged to allocate radio resources within the network to the base stations and the relay stations in accordance with a frame structure, the frame structure comprising a plurality of first radio resource elements for the transmission of control data,
wherein the base station is configured so as to transmit control data within one or more elements of the plurality of first radio resource elements, the one or more elements being different elements from elements allocated to the relay stations.
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21. A relay station for use in a cellular wireless network, the network comprising a plurality of base stations and a plurality of relay stations, the network being arranged to allocate radio resources within the network to the base stations and the relay stations in accordance with a frame structure, the frame structure comprising a plurality of first radio resource elements for the transmission of control data,
wherein the relay station is configured so as to transmit control data within one or more elements of the plurality of first radio resource elements, the one or more elements being different elements from elements allocated to the base stations.
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29. A method of allocating radio resource within a frame structure in a cellular wireless network operating within a frequency band, the network comprising a user equipment terminal, a plurality of nodes of a first type and a plurality of nodes of a second type, different from the first type, the frame structure comprising a plurality of first timeslots for the transmission of control data and a plurality of second timeslots for the transmission of payload data, the method comprising:
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configuring the nodes of the first type so as to transmit control data within a said first timeslot at first selected frequencies; and configuring the nodes of the second type so as to transmit control data within said first timeslot at second selected frequencies, wherein said first selected frequencies are different to said second selected frequencies, thereby enabling reception of control data from a node of the first type and from a node of the second type at the user equipment terminal within said first timeslot. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification