Mobile communication system with autonomous distributed type dynamic channel allocation scheme
First Claim
1. A method of allocating radio channels to communications between base stations and mobile stations in a mobile communication system, comprising the steps of:
- (a) managing allocation priority levels for the radio channels available in the mobile communication system, according to past records of channel use for each radio channel at each base station;
(b) sequentially selecting each currently unused radio channel in an order of the allocation priority levels managed at the step (a), and sequentially making an allocation accept/reject judgement concerning whether each selected radio channel is usable or not, at said each base station;
(c) updating the allocation priority level managed at the step (a) of each radio channel selected at the step (b) by weighting past allocation accept/reject judgement results for said each radio channel with weight factors which vary according to respective ordered positions of said past allocation accept/reject judgement results relative to a current allocation accept/reject judgement result; and
(d) allocating one radio channel which is judged as usable at the step (b) to a communication between said each base station and one mobile station.
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Accused Products
Abstract
A mobile communication system using an autonomous distributed type dynamic channel allocation scheme, in which each base station manages allocation priority levels for the available radio channels according to past records of channel use for each radio channel, and updates the allocation priority level of each radio channel by weighting past allocation accept/reject judgement results for each radio channel with weight factors which vary according to time intervals of the past allocation accept/reject judgement results from a current time. The mobile stations can be grouped into N groups according to states of the mobile stations and N sets of allocation priority levels for each radio channel in correspondence to these N groups can be managed at each base station. The thresholds for grouping the mobile stations can be determined according to past records of states of the mobile stations.
166 Citations
40 Claims
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1. A method of allocating radio channels to communications between base stations and mobile stations in a mobile communication system, comprising the steps of:
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(a) managing allocation priority levels for the radio channels available in the mobile communication system, according to past records of channel use for each radio channel at each base station; (b) sequentially selecting each currently unused radio channel in an order of the allocation priority levels managed at the step (a), and sequentially making an allocation accept/reject judgement concerning whether each selected radio channel is usable or not, at said each base station; (c) updating the allocation priority level managed at the step (a) of each radio channel selected at the step (b) by weighting past allocation accept/reject judgement results for said each radio channel with weight factors which vary according to respective ordered positions of said past allocation accept/reject judgement results relative to a current allocation accept/reject judgement result; and (d) allocating one radio channel which is judged as usable at the step (b) to a communication between said each base station and one mobile station. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of allocating radio channels to communications between base stations and mobile stations in a mobile communication system, comprising the steps of:
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(a) grouping the mobile stations into N groups according to states of the mobile stations at each base station, where N is an integer; (b) managing N sets of allocation priority levels for each radio channel available in the mobile Communication system in correspondence to said N groups at each base station; (c) for each mobile station, sequentially selecting each radio channel which is currently unused in an order of one of said N sets of the allocation priority levels managed at the step (b) which corresponds to one of said N groups grouped at the step (a) to which said each mobile station belongs to, and sequentially making an allocation accept/reject judgement concerning whether each selected radio channel is usable or not, at said each base station; and (d) allocating one radio channel which is judged as usable at the step (c) to a communication between said each base station and said each mobile station. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method of allocating radio channels to communications between base stations and mobile stations in a mobile communication system, comprising the steps of:
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(a) determining thresholds for grouping the mobile stations according to past records of states of the mobile stations; (b) grouping the mobile stations into N groups at each base station according to the thresholds for grouping determined at the step (a), where N is an integer; (c) for each mobile station, sequentially selecting each radio channel which is currently unused and sequentially making an allocation accept/reject judgement concerning whether each selected radio channel is usable or not, at said each base station, according to a procedure prescribed for one of said N groups grouped at the step (b) to which said each mobile station belongs to; and (d) allocating one radio channel which is judged as usable at the step (c) to a communication between said each base station and said each mobile station. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A mobile communication system, comprising:
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mobile stations; and base stations for communicating with the mobile stations by allocating radio channels, each base station including; a memory for managing allocation priority levels for the radio channels available in the mobile communication system, according to past records of channel use for each radio channel; and control means for sequentially selecting each currently unused radio channel in an order of the allocation priority levels managed in the memory and sequentially making an allocation accept/reject judgement concerning whether each selected radio channel is usable or not so as to allocate one radio channel which is judged as usable to a communication between said each base station and one mobile station, and updating the allocation priority level of each selected radio channel in the memory by weighting past allocation accept/reject judgement results for said each radio channel with weight factors which vary according to respective ordered positions of said past allocation accept/reject judgement results relative to a current allocation accept/reject judgement result. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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28. A mobile communication system, comprising:
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mobile stations; and base stations for communicating with the mobile stations by allocating radio channels, each base station including; a memory for managing N sets of allocation priority levels for each radio channel available in the mobile communication system in correspondence to N groups into which the mobile stations are grouped according to states of the mobile stations, where N is an integer; control means for sequentially selecting each radio channel which is currently unused, for each mobile station, in an order of one of said N sets of the allocation priority levels managed in the memory which corresponds to one of said N groups to which said each mobile station belongs to, and sequentially making an allocation accept/reject judgement concerning whether each selected radio channel is usable or not, so as to allocate one radio channel which is judged as usable to a communication between said each base station and said each mobile station. - View Dependent Claims (29, 30, 31, 32, 33, 34)
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35. A mobile communication system, comprising:
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mobile stations; and base stations for communicating with the mobile stations by allocating radio channels, each base station including; memory for managing thresholds for grouping the mobile stations according to past records of states of the mobile stations, such that the mobile stations are grouped into N groups according to the thresholds for grouping, where N is an integer; and control means for sequentially selecting each radio channel which is currently unused and sequentially making an allocation accept/reject judgement concerning whether each selected radio channel is usable or not, for each mobile station, according to a procedure prescribed for one of said N groups to which said each mobile station belongs to, so as to allocate one radio channel which is judged as usable to a communication between said each base station and said each mobile station. - View Dependent Claims (36, 37, 38, 39, 40)
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Specification