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公开(公告)号:EP1698193A1
公开(公告)日:2006-09-06
申请号:EP04813467.0
申请日:2004-12-08
CPC分类号: H04L1/16 , H04W52/0225 , H04W76/28 , Y02D70/142 , Y02D70/20
摘要: A communication unit ( 10 ) can have at least a first receiver ( 11 ) and a second receiver ( 12 ). The latter typically consumes more power than the former during ordinary operation. Pursuant to one embodiment a communication unit can use the lower-power receiver to detect energy on a monitored channel while the second receiver is retained in a reduced power mode of operation. Upon detecting an absence of channel activity the second receiver can be restored to normal operability to effect such activities as are then presently required.