Method and system for resource allocation in relay enhanced cellular systems
First Claim
1. A method of allocating resources for a relay enhanced cellular communication system including a base station, one or more mobile stations and one or more relay stations, comprising:
- assigning communication resources including subcarrier frequencies and time periods by;
allocating subcarriers to one or more access communication links between mobile stations and their serving stations and between base stations and their direct mobile stations, to meet proportional data rate constraints of mobile stations while improving subcarrier spectrum utilization;
allocating subcarriers to one or more relay communication links between the base station and relay stations to meet proportional data rate constraints of relay cells while improving subcarrier spectrum utilization;
scheduling communication periods for access links in access zones and relay links in relay zones;
selectively adjusting the scheduled communication periods for access zones and relay zones for providing coarse balancing of the resources allocated to the access links and the resources allocated to the relay links; and
adjusting subcarriers among relay links for refining balancing of resource allocation between access links and relay links.
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Abstract
A method and system for allocating resources for a relay enhanced cellular communication system including a base station, one or more mobile stations and one or more relay stations, is provided. Resource allocation involves allocating subcarriers to one or more access communication links between mobile stations and their serving stations, to meet proportional data rate constraints for the access communication links while improving subcarrier spectrum utilization, and allocating subcarriers to one or more relay communication links between the base station and relay stations to meet proportional data rate constraints for the relay communication links while improving subcarrier spectrum utilization. Further, communication periods are scheduled for access links in access zones and relay links in relay zones. Balancing of communication resources allocated to the access links and relay links may be performed by balancing both subcarrier allocation and scheduling periods.
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Citations
32 Claims
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1. A method of allocating resources for a relay enhanced cellular communication system including a base station, one or more mobile stations and one or more relay stations, comprising:
assigning communication resources including subcarrier frequencies and time periods by; allocating subcarriers to one or more access communication links between mobile stations and their serving stations and between base stations and their direct mobile stations, to meet proportional data rate constraints of mobile stations while improving subcarrier spectrum utilization; allocating subcarriers to one or more relay communication links between the base station and relay stations to meet proportional data rate constraints of relay cells while improving subcarrier spectrum utilization; scheduling communication periods for access links in access zones and relay links in relay zones; selectively adjusting the scheduled communication periods for access zones and relay zones for providing coarse balancing of the resources allocated to the access links and the resources allocated to the relay links; and adjusting subcarriers among relay links for refining balancing of resource allocation between access links and relay links. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. An apparatus for allocating resources for a relay enhanced cellular communication system including a base station, one or more mobile stations and one or more relay stations, comprising:
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an optimization module configured for assigning communication resources including subcarrier frequencies and time periods by; allocating subcarriers to one or more access communication links between mobile stations and their serving stations and between base stations and their direct mobile stations, to meet proportional data rate constraints of mobile stations while improving subcarrier spectrum utilization; allocating subcarriers to one or more relay communication links between the base station and relay stations to meet proportional data rate constraints of relay cells while improving subcarrier spectrum utilization; and scheduling communication periods for access links in access zones and relay links in relay zones; wherein the optimization module includes a balancing module configured for; selectively adjusting the scheduled communication periods for access zones and relay zones for providing coarse balancing of the resources allocated to the access links and the resources allocated to the relay links; and adjusting subcarriers among relay links for refining balancing of resource allocation between access links and relay links. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A relay enhanced cellular communication system, comprising:
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a base station, one or more mobile stations and one or more relay stations; a controller configured for allocating resources, the controller comprising an optimization module and a balancing module, wherein the optimization module is configured for assigning communication resources including subcarrier frequencies and time periods by; allocating subcarriers to one or more access communication links between mobile stations and their serving stations and between base stations and their direct mobile stations, to meet proportional data rate constraints for the access communication links while improving subcarrier spectrum utilization; allocating subcarriers to one or more relay communication links between the base station and relay stations to meet proportional data rate constraints for the relay communication links while improving subcarrier spectrum utilization; and scheduling communication periods for access links in access zones and relay links in relay zones, wherein the balancing module is configured for applying scheduling period adjustment to access zones and/or relay zones for achieving a coarse balance between access links and relay links based on adjusting access zone length and relay zone length, and adjusting subcarriers among relay links for refining balancing of resource allocation between access links and relay links. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31, 32)
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Specification