Energy saving protocol for a TDM radio
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United States of America Patent
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Sep 22, 1992
Issued Date -
N/A
app pub date -
Jan 18, 1991
filing date -
Jan 23, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A battery powered TDM (or combined TDM/FDM) communication device (104, 105) operates within a TDM communication system (100) having a communication channel arranged into repetitive time frames (401) each having a plurality of slots. At least two of these slots (404) are allocated for communicating signalling and control information. To conserve energy, the battery powered communication device operates in a first mode (i.e., the energy saving mode) to shut down non-essential circuits for a predetermined time interval, awaking to monitor only one of the two control slots. In this way signalling and control information may be received. When not operating in the energy saving mode, the battery powered communication device operates in a second mode (i.e., a fast access mode) to monitor both of the control slots (404).
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