Telefonaktiebolaget Lm Ericsson (publ)

Ericsson Gmbh

A Krister Raith

Paul Wilkinson Dent

John Walter Diachina

Nils Rutger Rydbeck

Bengt Y Persson

Francois Sawyer

Anthony J Sammarco

Anders C Hoff

In a mobile radio-telephone system including at least one base station transmitting information to subscriber telephones indicating whether they are being called, a method comprising the steps of dividing a repetitive frame period into a number of sleep-mode slots, determining a sleep-mode slot number to be used for transmitting a call to a particular subscriber telephone using an assigned subscriber telephone number, transmitting a calling message in said determined sleep-mode slot including the assigned subscriber telephone number, repeating transmission of the calling message a number of times as determined by system loading and available capacity to transmit such calls, and transmitting an indication of the number of repeated transmissions capacity and loading currently permits.

Reduced power sleep modes for mobile telephones

A method for transmitting messages using an efficient communications link protocol over an air interface of a cellular communications system is disclosed. A frame in the protocol is divided into a plurality of sections including a header section and a data section. The header section contains a field which indicates what type of information is contained in the frame.

Layer 2 protocol in a cellular communication system

Growing community of inventors

Durham, NC, United States of America

A Krister Raith