EP0475698A2
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EP
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Method for managing radio communication resources
Assignee: Motorola Solutions Inc
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Filing: 1991-09-09
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Granted: —
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Expires: 2011-09-09
Abstract
Abstract In a communication system (100) that performs radio channel management, there is a method and and apparatus for reducing contention and superfluous channel allocation between a plurality of mobile units (101,102 and 103), making multiple requests. In this effort, upon receipt of an access request (at 210 or 510) and after a determination that communication resources are available (at 530-570), the system determines an access request count (at 310) for each received access request. Thereafter, the system is responsible for altering system resources (at 360 or 370) as a function of the access request count in order to reduce the likelihood of contention. In addition, the system (100) is designed to determine a system processing delay (at 610) for each received access request and thereafter adjust a range of mobile unit retry intervals ((at 645 or 655) as a function of the processing delay, whereby the likelihood of more than one channel being assigned to a unit making multiple requests is reduced.
Inventors
- 👤 Brenda K. Herold
- 👤 Christine K. Ioratti
- 👤 Stephen N. Levine
- 👤 Douglas Dominiak
- 👤 Mary Beth Flanders
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-24 19:06
CPC Classifications
H; H04; H04W; H04W72/00; H04W72/12; H04W74/00; H04W74/08
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
143 words
A method for managing communication system (100) resources amongst a plurality of units (101,102 and 103) making multiple requests for said resources, said method characterized by the steps of: receiving an access request (at 210 or 510) from at least one of the plurality of requesting units (101,102 and 103); and when communication resources are available, performing at least one of the following sets of steps: A) determining an access request count (at 310 or 410) for each received access request, and altering system resources (at 360 370 or 440) as a function of access request count; and B) determining a processing delay (at 610), and adjusting a range of requesting unit retry intervals (at 645 or 655) as a function of the processing delay, whereby the likelihood of more than one channel being assigned to a unit making multiple requests is reduced.
Claim 2
Independent Claim
143 words
A method for managing communication system (100) resources amongst a plurality of units (101,102 and 103) making multiple requests for said resources, said method characterized by the steps of: receiving an access request (at 210 or 510) from at least one of the plurality of requesting units (101,102 and 103); and when communication resources are available, performing at least one of the following sets of steps: A) determining an access request count (at 310 or 410) for each received access request, and altering system resources (at 360 370 or 440) as a function of access request count; and B) determining a processing delay (at 610), and adjusting a range of requesting unit retry intervals (at 645 or 655) as a function of the processing delay, whereby the likelihood of more than one channel being assigned to a unit making multiple requests is reduced.
Claim 3
Dependent Claim
26 words
The method of claim 1 wherein an access request includes at least one of: requesting unit identification information; message identification information; and an access request count.
Claim 4
Dependent Claim
25 words
The method of claim 1 wherein the step of determining the access request count includes the step of: processing (at 220) the received access request.
Claim 5
Dependent Claim
57 words
The method of claim 1 wherein the step of altering system resources (at 360 or 370) is further characterized by the steps of: adding communication channels for at least one of the requesting units; deleting communication channels for at least one of the requesting units; and denying further accesses for at least one of the requesting units.
Claim 6
Dependent Claim
51 words
The method of claim 1 further characterized by the steps of: deriving timing advance from a received access request (at 420); correlating the access request count to the timing advance (at 430); and altering system resources (at 440) as a function of the correlation, whereby the likelihood of contention is reduced.
Claim 7
Dependent Claim
23 words
The method of claim 1 further characterized by the step of: altering requesting unit access procedures as a function of access request count.
Claim 8
Dependent Claim
41 words
The method of claim 6 wherein the step of altering requesting unit access procedures includes at least one of the following: altering requesting unit transmit signal strength levels; selecting another requesting unit access channel; and selecting another requesting unit serving system.
Claim 9
Dependent Claim
70 words
The method of claim 1 further characterized by the steps of: allocating a channel to support mobile unit communication (at 240 or 540); activating the allocated channel (at 270 or 570); scheduling transmission of an assignment signal to a requesting mobile unit (at 280 or 580); and transmitting an assignment signal to the requesting mobile unit upon the successful allocation and activation of a communication channel (at 290 or 590).
Claim 10
Dependent Claim
71 words
The method of claim 1 wherein the step of determining a processing delay is further characterized by the steps of: providing a timing stamp for the received access request to identify the instant when the access request is received (at 520); and establishing the processing delay, by determining a timing difference between the instant the access request is received and the instant the assignment signal is scheduled for transmission( at 610).
Claim 11
Dependent Claim
109 words
The method of claim 1 wherein the step of adjusting a range of access request retry intervals is further characterized by the steps of: monitoring processing delays (at 610); comparing the processing delay to predetermined values (at 615); determining a period of time since a last retry interval adjustment (at 635); and performing a retry interval adjustment only after expiration of a predetermined period of time by: altering system parameters that increase the range of retry intervals as the processing delay exceeds a predetermined value (at 645); and altering system parameters that decrease the range of retry intervals as the processing delay falls below a predetermined value (at 655).
References Cited (Backward Citations)
No citation records indexed.
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