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EP0444841A2
Expired / Lapsed
EP
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Time-allocation of radio carriers
Assignee: Motorola Solutions Inc
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Filing: 1991-02-25
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Granted: —
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Expires: 2011-02-25
Abstract
Abstract In a TDMA cellular system, there is provided a mechanism for splitting the allocation of time slots within a TDM frame between adjacent coverage areas. There is provided a method of and apparatus for time-allocation of TDMA channels. It is characterized by: periodically allocating some portion of a carrier (19A-24A) of radio traffic to one coverage area during one time interval and periodically allocating some other portion of that same carrier (19B-24B) to another coverage area during a substantially non-overlapping time interval, all in time synchronism with any proximal reuse of that carrier. The distribution of channels in adjacent coverage areas thereby approaches parity (8+8+5 ≈ 8+8+3+3) and the minimum channel capacity per coverage area is enhanced (8+8 ⇒ 8+8+3+3; 16 ⇒ 22).
Inventors
- 👤 Stephen L. Spear
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 18:01
CPC Classifications
H; H04; H04B; H04B7/00; H04B7/24; H04B7/26; H04B7/2643; H04W; H04W16/00; H04W16/24
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
60 words
A method of time-allocation of cellular radio carriers characterized by: allocating some portion of a carrier (19A-24A) of radio traffic to one coverage area during one time interval and allocating some other portion of that same carrier ( 19B-24B) to another coverage area during a substantially non-overlapping time interval, all in time synchronism with any proximal reuse of that carrier.
Claim 2
Dependent Claim
41 words
A method as claimed in Claim 1 above, further characterized by allocating yet another portion of that same carrier to yet another coverage area during a substantially non-overlapping time interval, all in time synchronism with any proximal reuse of that carrier.
Claim 3
Dependent Claim
14 words
A method as claimed in Claim 1 above, wherein such allocation is done periodically.
Claim 4
Dependent Claim
14 words
A method as claimed in Claim 1 above, wherein such allocation is done predeterminally.
Claim 5
Dependent Claim
14 words
A method as claimed in Claim 1 above, wherein such allocation is done dynamically.
Claim 6
Dependent Claim
27 words
A method as claimed in Claim 1 above, wherein such carrier portion and such other carrier portion are characterized by time slots of a TDM time frame.
Claim 7
Dependent Claim
34 words
A method as claimed in Claim 1 above, wherein such carrier portion and such other carrier portion respectively are characterized by five and three time slots in a modulo-8 (301) system-synchronus TDM time frame.
Claim 8
Dependent Claim
33 words
A method as claimed in Claim 1 above, wherein such channels and such other channels respectively are characterized by four and two time slots in a modulo-8 (301) loosely-synchronus TDM time frame system.
Claim 9
Dependent Claim
23 words
A method as claimed in Claim 1 above, wherein a frequency-agile radio provides more than one carrier in time synchronism with the system.
Claim 10
Dependent Claim
23 words
A method as claimed in Claim 1 above, wherein a frequency-agile transceiver provides more than one carrier in time synchronism with the system.
Claim 11
Independent Claim
86 words
A method of time-allocabon of cellular radio carriers characterized by: periodically allocating some portion of a carrier (19A-24A) of radio traffic to one coverage area during one time interval and periodically allocating some other portion ( 19B-24B) of that same carrier to another coverage area during a substantially non-overlapping time interval, all in time synchronism with any proximal reuse of that carrier, whereby the distribution of carriers in adjacent coverage areas approaches parity (8+8+5 ≈ 8+8+3+3) and the minimum channel capacity per coverage area is enhanced.
Claim 12
Independent Claim
96 words
An apparatus for time-allocation of TDMA channels characterized by: means for periodically allocating some portion of a carrier (19A-24A) of radio traffic to one coverage area during one time interval operatively coupled with means for periodically allocating some other portion of that same carrier (19B-24B) to another coverage area dig a substantially non-overlapping time interval, all in time synchronism with any maximal reuse of that carrier, whereby the distribution of carriers in adjacent coverage areas approaches parity (8+8+5 ≈ 8+8+3+3) and the minimum channel capacity per coverage area is enhanced (8+8 ⇒ 8+8+3+3; 16 ⇒ 22).
References Cited (Backward Citations)
No citation records indexed.
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