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US 5,109,528 AGranted
Handover method for mobile radio system
AssigneeTelefonaktiebolaget L M Ericsson
InventorJan-Erik Uddenfeldt
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AssigneeTelefonaktiebolaget L M Ericsson
InventorJan-Erik Uddenfeldt
Estimating the term…
The invention relates to a method in mobile radio systems in which the responsibility for transmitting message information to a mobile station is handed over from a first base station transmitter to a second base station transmitter. In this method, the same radio channel is used, if possible, before and after the handover for transmitting message information to the mobile station. If the same radio channel can be utilized, the handover takes place without the mobile station being informed beforehand of the handover by a special signal or order or the like. In digital mobile ratio systems with digital transmission of message information by digital modulation of the radio signals, the transmission is preferably started from a second base station transmitter before the transmission is terminated from a first base station transmitter. During a certain transmission time substantially the same message information is transmitted to the mobile station from both the first and second base station transmitters.
In a mobile radio communication system comprising base stations and mobile stations and a plurality of radio channels for transmitting control information and message information between base stations and mobile stations, said base stations and mobile stations including radio transmitters and radio receivers for a plurality of radio channels, a method for handing over the responsibility for transmitting message information to a mobile station from at least one first base station transmitter to at least one second base station transmitter, comprising the steps of:
In a mobile radio communication system comprising base stations and mobile stations having radio transmitters and radio receivers for transmitting control information and message information therebetween, a method for handing over the responsibility for transmitting message information to a mobile station from at least one first base station transmitter to at least one second base station transmitter comprising the steps of:
Dependencies are inferred from the claim text.