Improved registration in cellular radio telecommunications systems
AssigneeTelefonaktiebolaget L M Ericsson
InventorFrancois Sawyer
Life of this patent
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Abstract
A method and system for registering mobile stations within a cellular radio telecommunications system. A registration confirmation message, initial voice channel designation message or initial traffic channel designation message may include system parameter values to enable the mobile station to ensure that it is currently registered in the system in which it is currently located.
Claims32
A method for the registration of mobile stations operating within a radio telecommunications system comprising the steps of:
- broadcasting a first system parameter value on a control channel of said system;
- receiving said first system parameter value at one of said mobile stations;
- storing said first system parameter value within a first memory of said mobile station;
- transmitting a system access message from said mobile station to said system;
- transmitting in response to said system access message a system acknowledgement message from said system to said mobile station, said system acknowledgment message including a second system parameter value;
- storing said second system parameter value within a second memory of said mobile station;
- comparing said second system parameter value with said first system parameter value;
- and
- transmitting a registration message from said mobile station to said system if said first and second system parameter values are different.
An apparatus for the registration of mobile stations operating within a radio telecommunications system comprising:
- means for broadcasting a first system parameter value on a control channel of said system;
- means for receiving said first system parameter value at one of said mobile stations;
- means for storing said first system parameter value within a first memory of said mobile station;
- means for transmitting a system access message from said mobile station to said system;
- means for transmitting in response to said system access message a system acknowledgement message from said system to said mobile station, said system acknowledgment message including a second system parameter value;
- means for storing said second system parameter value within a second memory of said mobile station;
- means for comparing said second system parameter value with said first system parameter value;
- and
- means for transmitting a registration message from said mobile station to said system if said first and second system parameter values are different.
Dependencies are inferred from the claim text.