Control signal transmission system for use in a mobile radio communication system
Method for transmitting data in a time multiplex transmission
Apparatus for communicating with a fleet of vehicles Patent #: 4414661
ApplicationNo. 06/442546 filed on 11/18/1982
US Classes:455/422.1, Zoned or cellular telephone system455/17, Plural modulated carriers455/512, Based on priority455/527Break-in or priority override
ExaminersPrimary: Ng, Jin F.
Attorney, Agent or Firm
International ClassesH04L 12/403 (20060101)
H04Q 7/38 (20060101)
H04Q 7/36 (20060101)
Foreign Application Priority Data1981-11-20 FR
AbstractThis method relates to the control of the information stream in a cell constituted by several radio channels (C1) and (C2), each connecting terminal stations (T1l to T1m) and (T2l to T2n) to a main station (1) of the cell. In order to assign the ascendent path of a radio channel to a terminal station, the main station transmits in this channel a code signal So, whereupon the terminal stations transmit calls to be used in call time windows each with an associated priority level. The main station transmits, in answer time windows, code signals dependent upon the received signals: a code signal S3 if the received signal is a distinct call, to give a terminal station the authorization to use the ascendent path, or a sequence of code signals S1 or S2 if the received signal contains, simultaneously, several calls, or does not contain any call. Dependent upon each code signal S1 or S2 received and upon each bit of its address, each terminal station decides whether a new call has to be transmitted or is not to be transmitted, which terminates, according to a dichotomy process, by the transmission of a code signal S3 by the main station.