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Method of disconnecting an established communication connection in a mobile radio system

  • US 5,535,429 A
  • Filed: 01/27/1994
  • Issued: 07/09/1996
  • Est. Priority Date: 01/27/1993
  • Status: Expired due to Fees
First Claim
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1. A method of disconnecting a communications connection established between a mobile station and a network in a mobile radio system in which communication between the network and a plurality of mobile stations takes place over a number of communications channels and in which communication over an allocated communications channel between the network and a given mobile station is commenced and terminated in response to normal signalling from the network to the mobile station, comprising the steps of:

  • detecting, in the network, a state of the allocated communications channel which indicates that communication on the allocated channel has been degraded and therefore shall be disconnected;

    sending a first signal from the network to the mobile station;

    sending, upon receipt of the first signal, an acknowledgement signal from the mobile station to the network and activating a time monitoring process;

    sending, upon receipt of the acknowledgement signal, a second signal from the network to the mobile station;

    wherein the second signal, when received by the mobile station, prevents the time monitoring process from stopping, whereby the mobile station relinquishes the allocated communications channel; and

    sending a second acknowledgement signal responsive to the relinquish from the mobile station to the network in order to inform the network about the relinquished communications channel.

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