Multiplex communications – Communication over free space – Combining or distributing information via time channels
Patent
1996-09-30
1999-05-11
Ton, Dang
Multiplex communications
Communication over free space
Combining or distributing information via time channels
370389, H04J3/24
Patent
active
059035579
ABSTRACT:
Apparatus and method for determining the activation status of a receiving station of a communication system. A sending station determines the activation status of the receiving station to be active, possibly inactive, or inactive. When the receiving station is only temporarily unable to receive signals transmitted thereto by the sending station, the sending station is less likely to determine the receiving station to be inactive as the receiving station is first determined to be possibly inactive.
REFERENCES:
patent: 4774707 (1988-09-01), Raychaudhuri
patent: 5079765 (1992-01-01), Nakamura
patent: 5440545 (1995-08-01), Buchholz et al.
Mobeen Khan and John Kilpatrick, MOBITEX and Mobile Data Standards, IEEE Communications Magazine, No. 3, Mar. 1995, pp. 96-101.
Henriksson Anders
Johansson Carl Fredrik
Telefonaktiebolaget L M Ericsson (publ)
Ton Dang
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