Patent JPS5936942A successfully refreshed from Google Patents.
US6535736B1
Expired / Lapsed
US
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System and method for variably delaying access requests in wireless communications system
Assignee: Nokia of America Corp
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Filing: 1998-12-11
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Granted: 2003-03-18
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Expires: 2018-12-11
Abstract
Abstract The present invention, in illustrative embodiments, implements systems and methods for adjusting the timing of access requests in mobile communications systems, such as IS-95-A mobile telephone systems, to reduce the likelihood of request collisions-especially during periods of very high calling rates. These embodiments employ measurements of access channel occupancy, as well as system operator inputs, to develop thresholds and parameter translations at a base station. Execution of control algorithms at a base station advantageously yields modified persistence test parameters sent to mobile stations. When overload conditions are present, these modified parameters cause the mobile stations to experience variable delays through judicious control of persistence testing at the mobile stations.
Inventors
- 👤 Dan Anthony Balogh
- 👤 John K. Burgess
- 👤 Terry Si-Fong Cheng
- 👤 Ching Yao Huang
- 👤 Shawn S. Yu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 13:38
CPC Classifications
H; H04; H04W; H04W28/00; H04W28/16; H04W28/02; H04W74/00
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
210 words
A method for variably delaying access requests over at least one access channel from each of a plurality of terminals to a shared resource, origination of access requests at said terminals being subject to a pseudo-random delay characterized by a first parameter, the method comprising generating one or more occupancy signals reflecting the relative occupancy of said access channels, based on said occupancy signals, generating an adjustment signal representing a modification of said first parameter, and making said adjustment signal available to at least some of said terminals, wherein each of said channels is arranged to receive messages in sequential access slots, each of said slots comprising a plurality of frames, each of said messages comprising a message preamble and a message capsule, and said generating of said one or more occupancy signals reflecting the relative occupancy of said access channels comprises determining for each access channel the % interval occupancy in accordance with % Interval Occupancy=[ M× (4+MAX_CAP — SZ +PAM — SZ )%, where M is the number of occupied access slots during a measurement interval, MAX CAP_SZ is the maximum number of access channel frames in an Access Channel message capsule minus 3, and PAM_SZ is the number of frames in the Access Channel preamble minus 1.
Claim 2
Independent Claim
210 words
A method for variably delaying access requests over at least one access channel from each of a plurality of terminals to a shared resource, origination of access requests at said terminals being subject to a pseudo-random delay characterized by a first parameter, the method comprising generating one or more occupancy signals reflecting the relative occupancy of said access channels, based on said occupancy signals, generating an adjustment signal representing a modification of said first parameter, and making said adjustment signal available to at least some of said terminals, wherein each of said channels is arranged to receive messages in sequential access slots, each of said slots comprising a plurality of frames, each of said messages comprising a message preamble and a message capsule, and said generating of said one or more occupancy signals reflecting the relative occupancy of said access channels comprises determining for each access channel the % interval occupancy in accordance with % Interval Occupancy=[ M× (4+MAX_CAP — SZ +PAM — SZ )%, where M is the number of occupied access slots during a measurement interval, MAX CAP_SZ is the maximum number of access channel frames in an Access Channel message capsule minus 3, and PAM_SZ is the number of frames in the Access Channel preamble minus 1.
Claim 3
Dependent Claim
18 words
The method of claim 1 , wherein said adjustment signal represents an incremented value for said first parameter.
Claim 4
Dependent Claim
18 words
The method of claim 1 , wherein said adjustment signal represents a decremented value for said first parameter.
Claim 5
Dependent Claim
52 words
The method of claim 1 , wherein said generating of said adjustment signal comprises receiving a first threshold signal, T H , comparing said T H with said occupancy signal, and generating said adjustment signal in accordance with at least one pre-defined relationship between said occupancy signal and said T H .
Claim 6
Dependent Claim
42 words
The method of claim 4 , wherein said generating said adjustment signal in accordance with at least one pre-defined relationship comprises generating an adjustment signal to change said first parameter signal to a value tending to increase the delay of said originations.
Claim 7
Dependent Claim
16 words
The method of claim 5 wherein said adjustment signal causes said first parameter to be incremented.
Claim 8
Dependent Claim
25 words
The method of claim 5 wherein said adjustment signal causes said first parameter to be replaced by a value corresponding to a longer average delay.
Claim 9
Dependent Claim
41 words
The method of claim 4 wherein said generating said adjustment signal in accordance with at least one pre-defined relationship comprises generating an adjustment signal to change said first parameter signal to a value tending to decrease the delay of said originations.
Claim 10
Dependent Claim
16 words
The method of claim 8 wherein said adjustment signal causes said first parameter to be incremented.
Claim 11
Dependent Claim
25 words
The method of claim 8 wherein said adjustment signal causes said first parameter to be replaced by a value corresponding to a longer average delay.
Claim 12
Dependent Claim
14 words
The method of claim 1 , wherein said channels are mobile communications access channels.
Claim 13
Independent Claim
219 words
A system for variably delaying access requests over at least one access channel from each of a plurality of terminals to a shared resource, origination of access requests at said terminals being subject to a pseudo-random delay characterized by a first parameter, the method comprising means for generating one or more occupancy signals reflecting the relative occupancy of said access channels, and means for generating an adjustment signal based on said occupancy signals, said adjustment signal representing a modification of said first parameter, and making said adjustment signal available to at least some of said terminals, wherein each of said channels is arranged to receive messages in sequential access slots, each of said slots comprising a plurality of frames, each of said messages comprising a message preamble and a message capsule, and said means for generating said one or more occupancy signals reflecting the relative occupancy of said access channels comprises means for determining for each access channel the percent interval occupancy in accordance with Percent Interval Occupancy=[ M× (4+MAX_CAP — SZ+ PAM — SZ )] %, where M is the number of occupied access during a measurement interval, MAX CAP_is the maximum number of access channel frames in an Access Channel message capsule minus 3, and PAM_is the number of frames in the Access Channel preamble minus 1.
Claim 14
Independent Claim
219 words
A system for variably delaying access requests over at least one access channel from each of a plurality of terminals to a shared resource, origination of access requests at said terminals being subject to a pseudo-random delay characterized by a first parameter, the method comprising means for generating one or more occupancy signals reflecting the relative occupancy of said access channels, and means for generating an adjustment signal based on said occupancy signals, said adjustment signal representing a modification of said first parameter, and making said adjustment signal available to at least some of said terminals, wherein each of said channels is arranged to receive messages in sequential access slots, each of said slots comprising a plurality of frames, each of said messages comprising a message preamble and a message capsule, and said means for generating said one or more occupancy signals reflecting the relative occupancy of said access channels comprises means for determining for each access channel the percent interval occupancy in accordance with Percent Interval Occupancy=[ M× (4+MAX_CAP — SZ+ PAM — SZ )] %, where M is the number of occupied access during a measurement interval, MAX CAP_is the maximum number of access channel frames in an Access Channel message capsule minus 3, and PAM_is the number of frames in the Access Channel preamble minus 1.
Claim 15
Dependent Claim
18 words
The system of claim 12 , wherein said adjustment signal represents an incremented value for said first parameter.
Claim 16
Dependent Claim
18 words
The system of claim 12 , wherein said adjustment signal represents a decremented value for said first parameter.
Claim 17
Dependent Claim
59 words
The system of claim 12 , wherein said means for generating said adjustment signal comprises means for receiving a first threshold signal, T H , means for comparing said T H with said occupancy signal, and means for generating said adjustment signal in accordance with at least one pre-defined relationship between said occupancy signal and said T H .
Claim 18
Dependent Claim
46 words
The system of claim 15 , wherein said means for generating said adjustment signal in accordance with at least one pre-defined relationship comprises means for generating an adjustment signal to change said first parameter signal to a value tending to increase the delay of said originations.
Claim 19
Dependent Claim
16 words
The system of claim 15 wherein said adjustment signal causes said first parameter to be incremented.
Claim 20
Dependent Claim
25 words
The system of claim 15 wherein said adjustment signal causes said first parameter to be replaced by a value corresponding to a longer average delay.
Claim 21
Dependent Claim
46 words
The system of claim 15 wherein said means for generating said adjustment signal in accordance with at least one pre-defined relationship comprises means for generating an adjustment signal to change said first parameter signal to a value tending to decrease the delay of said access requests.
Claim 22
Dependent Claim
20 words
The system of claim 19 wherein said means for generating said adjustment signal causes said first parameter to be incremented.
Claim 23
Dependent Claim
29 words
The system of claim 19 wherein said means for generating said adjustment signal causes said first parameter to be replaced by a value corresponding to a longer average delay.
Claim 24
Dependent Claim
35 words
The system of claim 12 , wherein said access channels are mobile communications channels, and wherein said means for making said adjustment signal available to at least some of said terminals comprises a paging channel.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 2006-03-17 | 2006-09-16 | 2007-03-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2010-03-17 | 2010-09-16 | 2011-03-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2014-03-17 | 2014-09-16 | 2015-03-18 | $7700.00 | Window Closed / Lapsed |