Method for reducing superfluous channel allocation in a cellular radiotelephone communication system
First Claim
1. In a communication system performing radio channel management, a method for reducing superfluous channel allocations among a plurality of mobile units, making multiple service requests to communication system base site equipment;
- said method comprising the steps of;
receiving, at a base sites, a channel request from at least one of the plurality of mobile units;
determining, at the base sites, a communication system processing delay associated with the received request; and
adjusting system parameters that control a range of mobile unit channel request retry intervals as a function of the processing delay, to reduce the likelihood of more than one channel being assigned to the requesting mobile unit.
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Abstract
In a communication system which performs radio channel management, there is provided a method and and apparatus for reducing superfluous channel allocation between a plurality of mobile units, making multiple requests, and the communication system comprising the steps of A) receiving a channel request from at least one of the plurality of mobile units, B) determining the processing delays introduced by the communication system in response to the channel request; and C) adjusting the mobile unit retry (retransmit) interval as a function of the processing delay in order to reduce the likelihood that more than one channel will be assigned to a single mobile unit by causing the mobile unit to wait longer between subsequent channel request attempts. An alternative embodiment suggests adjusting the mobile unit retry interval based upon a level of channel request traffic.
62 Citations
18 Claims
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1. In a communication system performing radio channel management, a method for reducing superfluous channel allocations among a plurality of mobile units, making multiple service requests to communication system base site equipment;
- said method comprising the steps of;
receiving, at a base sites, a channel request from at least one of the plurality of mobile units; determining, at the base sites, a communication system processing delay associated with the received request; and adjusting system parameters that control a range of mobile unit channel request retry intervals as a function of the processing delay, to reduce the likelihood of more than one channel being assigned to the requesting mobile unit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
- said method comprising the steps of;
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9. In a communication system performing radio channel management, a method for reducing superfluous channel allocations among a plurality of mobile units, making multiple service requests to communication system base site equipment;
- said method comprising the steps of;
receiving;
at a base site;
channel requests from the plurality of mobile units across a request channel;determining;
at the base site;
a level of mobile unit activity on the request channel; andadjusting communication system parameters that control a range of mobile unit channel request retry intervals as a function of the level of activity on the request channel, to reduce the likelihood of more than one channel being assigned to a mobile unit making multiple requests. - View Dependent Claims (10, 11, 12)
- said method comprising the steps of;
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13. In a communication system performing radio channel management, a method for reducing superfluous channel allocations among a plurality of mobile units, making multiple requests to communication system base site equipment, said method comprising the steps of:
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receiving at a base site, a channel request from at least one of the plurality of mobile units; placing a timing stamp on the received channel request to identify the instant when the request is received by the base site determining a communication system processing delay as a timing difference between the instant when the request is received by the base site and an instant when the base site schedules service for the requesting mobile unit; comparing the communication system processing delay to predetermined values; and adjusting communication system parameters that control a range of mobile unit channel request retry intervals as a function of the comparison, to reduce the likelihood of more than one channel being assigned to a mobile unit making multiple requests.
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14. In a communication system performing radio channel management, a transceiver for reducing superfluous channel allocations among a plurality of mobile units making multiple service requests, said transceiver comprising:
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a receiver for receiving a channel request from at least one of the plurality of mobile units; means, coupled to the receiver, for determining a communication system processing delay; means;
coupled to the determining means, for comparing the processing delay to predetermined values;means;
coupled to the comparing means, for adjusting system parameters that control a range of mobile unit channel request retry intervals as a function of the comparison; anda transmitter;
coupled to the adjusting means, for transmitting said system parameters to said plurality of mobile units serviced by the transceiver for use in selecting an alternate retry interval to reduce the likelihood that more than one channel will be assigned to a single mobile unit. - View Dependent Claims (15)
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16. In a communication system performing radio channel management, a transceiver for reducing superfluous channel allocations among a plurality of mobile units making multiple service requests:
- said transceiver comprising;
a receiver for receiving channel requests from the plurality of mobile units across a request channel; means, coupled to the receiver, for determining a level of activity across the request channel; means, coupled to the determining means, for adjusting communication system parameters that control a range of mobile unit retry intervals as a function of the level of activity on the request channel; and a transmitter;
coupled to the adjusting means;
for transmitting said communication system parameters to said plurality of mobile units serviced by the transceiver for use in selecting an alternate retry interval.
- said transceiver comprising;
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17. In a communication system performing radio channel management, a transceiver for reducing superfluous channel allocations among a plurality of mobile units making multiple service requests:
- said transceiver comprising;
receiver for receiving a channel request from at least one of the plurality of mobile units; means, coupled to the receiver, for placing a timing stamp on the received request to identify the instant when the request is received; means, coupled to the receiver, for determining a processing delay as a timing difference between the instant when the request is received and an instant when the transceiver schedules service for the requesting mobile unit; means;
coupled to the determining means, for comparing the processing delay to predetermined values;means,, coupled to the comparing means, for adjusting system parameters that control a range of mobile unit request retry intervals as a function of the comparison; and a transmitter;
coupled to the adjusting means;
for transmitting said system parameters to said plurality of mobile units serviced by the transceiver for use in selecting an alternate retry interval,, thereby reducing the likelihood that more than one channel will be assigned to a single mobile unit. - View Dependent Claims (18)
- said transceiver comprising;
Specification