On-site system frequency sharing with trunking system
First Claim
1. In a large-cell of a trunked radio system providing radio communications to large-cell communication units throughout a relatively large geographic region, said large-cell having a plurality of communication resources allocable to large-cell communication units within said large region, a method of re-using at least some of the plurality of communication resources by an at least one small-cell trunked system for providing radio communications throughout a relatively small geographic region within the large geographic region and where the at least one small-cell trunked system is located at least a predetermined distance from a large-cell base site of the large-cell trunked system, the method comprising of the steps of:
- a) identifying a list of small-cell useable communication resources, of the plurality of communication resources, to a small-cell resource controller;
b) designating a communication resource of the list as a control resource for the small-cell controller; and
c) allocating remaining communication resources from the list to small-cell communication units using the control resource of the small cell.
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Accused Products
Abstract
A method of allowing use of small, low-power communication systems (20) within the coverage area (11) of larger trunked communication systems. A low-power communication system re-uses the same communication resources used by the larger trunked system whenever sufficient distance exists between large system communication units and the low power system so as to avoid interference. Large system communication units may also be constructed to operate in a dual mode format so as to transmit and receive in a low power mode and on re-used resources, whenever near a low power system or to transmit and receive in a high power mode whenever else necessary.
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Citations
26 Claims
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1. In a large-cell of a trunked radio system providing radio communications to large-cell communication units throughout a relatively large geographic region, said large-cell having a plurality of communication resources allocable to large-cell communication units within said large region, a method of re-using at least some of the plurality of communication resources by an at least one small-cell trunked system for providing radio communications throughout a relatively small geographic region within the large geographic region and where the at least one small-cell trunked system is located at least a predetermined distance from a large-cell base site of the large-cell trunked system, the method comprising of the steps of:
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a) identifying a list of small-cell useable communication resources, of the plurality of communication resources, to a small-cell resource controller; b) designating a communication resource of the list as a control resource for the small-cell controller; and c) allocating remaining communication resources from the list to small-cell communication units using the control resource of the small cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. In a large-cell of a trunked radio system providing radio communications to large-cell communication units throughout a relatively large geographic region, said large-cell having a plurality of communication resources allocable to large-cell communication units within said large region, an apparatus for re-using at least some of the plurality of communication resources by an at least one small-cell trunked system for providing radio communications throughout a relatively small geographic region within the large geographic region and where the at least one small-cell trunked system is located at least a predetermined distance from a large-cell base site of the large-cell trunked system, the small-cell trunked system comprising:
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a) a small-cell resource controller; b) means for identifying a list of small-cell useable communication resources, of the plurality of communication resources, to the small-cell resource controllers; c) means for designating an unused communication resource from the list as a control resource for the small-cell controller; and d) means for allocating remaining unused communication resources to small-cell communication units using the control resource of the small-cell controller. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A small-cell trunking system providing trunked radio communications to small-cell communication units, said small-cell trunking system being located substantially within a first coverage area located at a predetermined location within a second, larger coverage area, said second area being provided with trunked radio communications by a large-cell trunking system having a large-cell trunking system controller, said small cell trunking system using at least some large-cell trunking system communication resources, said small-cell trunking system being comprised of:
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receiver means for receiving trunked radio control signals on said large-cell communication resources; transmitter means for transmitting trunked radio control signals on said communication resources; small-cell resource controller means coupled to said receiver means and said transmitter means for controlling assignment of large-cell communication resources to small-cell communication units within said first coverage area using control signals received by said receiver means and transmitted by said transmitter means; and at least one small-cell communication unit. - View Dependent Claims (20, 21, 22, 23)
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24. A dual-mode trunked radio system communication unit for providing trunked radio communications within a large-cell communication system and, upon occasion, a small-cell communication system, such dual-mode communication unit comprising:
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A) means for communicating within a large-cell communication system on a control resource and an allocated resource within the large-cell system at a large-cell power level; B) means for scanning communication resources to detect the presence of a small-cell control resource; C) means for communicating within a small-cell communication system under a time division multiplex format and at a reduced power level from the large-cell power level on the small-cell control resource detected by the means for scanning.
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25. A method of providing trunked radio communications within a large-cell communication system and, upon occasion, a small-cell communication system to a dual-mode trunked radio system communication unit, the method comprising the steps of:
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A) communicating within a large-cell communication system at a large-cell power level on a control resource and an allocated resource within the large-cell system; B) scanning communication resources to detect the presence of a small-cell control resource; C) communicating within a small-cell communication system under a time division multiplex format and at a reduced power level from the large-cell power level on the detected small-cell control resource.
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26. A small-cell communication unit for communicating within a small-cell communication system located at least a predetermined distance from a large-cell base site, such small-cell communication unit comprising:
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A) means for identifying a control resource of a small-cell resource controller; B) means for transmitting resource requests to a small-cell resource controller on the control resource; B) means for receiving resource allocations from the small cell resource controller on the control resource; and
,C) means for exchanging a communicated signal on a resource allocated by the small-cell resource controller.
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Specification