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EP0889664A2 Expired / Lapsed EP ⏱️ 0.0 years remaining

Random access channel congestion control for broadcast teleservice acknowledgment messages

Assignee: Nokia of America Corp
•
Filing: 1998-06-02
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Granted: —
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Expires: 2018-06-02
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Abstract

Abstract One embodiment of the present invention is a method for controlling the number of mobile-telephones transmitting acknowledgments to broadcast short messages (BSM) over a same set of random access channels at a same time. In this embodiment, the transmissions of BSM acknowledgments is controlled by the wireless communication system using random access channel restrictions and random access techniques. Specifically, the random access channel restrictions reduce collisions among acknowledging mobile-telephones and call processing mobile-telephones by allocating one or more specific random access channels over which a BSM acknowledgment can be transmitted, and the random access techniques reduce collisions among acknowledging mobile-telephones by distributing transmissions of the BSM acknowledgments over a period of time.

Inventors

  • 👤 Anjana Agarwal
  • 👤 Bulin Zhang
  • 👤 Awinash Trimbak Talwalkar

Bibliographic Details

Application Number —
Jurisdiction EP
Data Source google_patents
Last Synchronized 2026-11-07 08:05
CPC Classifications
H; H04; H04W; H04W72/00; H04W72/04; H04W72/044; H04L; H04L1/00; H04L1/12; H04L1/16; H04L1/18; H04L1/1829; H04L1/1854; H04L2001/0092; H04L2001/0096; H04L2001/125; H04W4/00; H04W4/12; H04W74/00; H04W74/08; H04W74/0833

Claims Analysis

Total Claims: 9
Claim 1
Independent Claim 47 words
A method for controlling transmissions on control channels in a wireless communication system CHARACTERIZED BY the steps of: receiving a first message at a mobile-telephone indicating a control channel allocation; and transmitting a second message from the mobile-telephone using the control channel indicated in the first message.
Claim 2
Dependent Claim 17 words
The method of claim 1, CHARACTERIZED IN THAT the first message is received over a broadcast channel.
Claim 3
Dependent Claim 18 words
The method of claim 1, CHARACTERIZED IN THAT the indicated control channel is a particular random access channel.
Claim 4
Dependent Claim 17 words
The method of claim 1, CHARACTERIZED IN THAT the first message further indicates a time delay parameter.
Claim 5
Independent Claim 44 words
A method for controlling transmissions on channels in a wireless communication system CHARACTERIZED BY the steps of: receiving a bit map at a mobile-telephone indicating a channel allocation; and transmitting a message from the mobile-telephone using the allocated channel indicated in the bit map.
Claim 6
Dependent Claim 43 words
The method of claim 7, CHARACTERIZED IN THAT the bit map includes a plurality of bit values corresponding to a plurality of channels, each of the bit values indicating whether the corresponding channel is allocated for transmission of the message by the mobile-telephone.
Claim 7
Independent Claim 59 words
A method for controlling transmissions on channels in a wireless communication system CHARACTERIZED BY the steps of: receiving at a mobile-telephone a first message and a time delay parameter; generating a random number; and transmitting a second message in response to the first message after completion of a period defined using the time delay parameter and the random number
Claim 8
Independent Claim 121 words
A method for controlling transmissions on random access channels in a wireless communication system CHARACTERIZED BY the steps of: receiving at a mobile-telephone a random access channel allocation and a time delay parameter; waiting a period defined using the time delay parameter and a random number; determining whether a current random access channel is the allocated random access channel; repeating the step of determining whether the current random access channel is the allocated random access channel for the next current random access channel if the current random access channel is not the allocated random access channel; and transmitting a message from the mobile-telephone using the current random access channel if the current random access channel is the allocated random access channel.
Claim 9
Dependent Claim 31 words
The method of claim 18 CHARACTERIZED BY the additional step of: repeating the step of transmitting the message if the transmitted message was not successfully received by the wireless communication system.

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