Reduction of power consumption in a portable communication unit

Details Reduction of power consumption in a portable communication unit Reduction of power consumption in a portable communication unit

1993-03-09

1994-03-08

Eisenzopf, Reinhard J.

Telecommunications

Carrier wave repeater or relay system

Plural modulated carriers

455 541, 455 69, 455 77, 455 89, 455127, 455343, H04B 140

Patent

active

052936392

ABSTRACT:
Power consumption in a portable communication unit (101) is reduced by first transmitting at a first time, a message (701) at a first transmit power level to a repeater (103) on a first communication channel. At a second time the message (701) is repeated (903) by the repeater on a second communication channel, thereby transmitting a delayed message (703). The portable communication unit (101) tunes (807) to the second communication channel after transmitting all of the message (701), so as to receive at least part of the delayed message (703). The repeater (103) establishes a receive quality metric (705) for the message (701) and transmits (909) the receive quality metric after all of the delayed message (703) is transmitted. The portable communication unit receives and stores (809) the receive quality metric (705), and determines a second transmit power level for transmitting another message using the receive quality metric.

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