Title:
【発明の名称】通信システムにおける電池の節約
Document Type and Number:
Japanese Patent JP2001508274
Kind Code:
A
Abstract:
For battery economizing in a receiving station (CU) having a radio identity code (RIC) consisting of M bits, a base station (MIU) transmits a wake-up message consisting of at least two repetitions of a wake-up sequence having N concatenated parts. Each of the N parts includes a sync code word and a different fraction M/N of bits of a radio identity code (RIC). The receiving station is energized intermittently in order to detect carrier and at least one of the N parts. In response to detecting that one of the N parts is received, the receiving station remains energized and analyzes at least the detected one of the N parts. If the received bits of the transmitted radio identity code do not correspond to the corresponding bits of the receiving station's radio identity code, the receiving station reverts to intermittent energization, otherwise it remains energized to receive a message appended to the transmitted radio identity code. Each of the parts may be appended to a different sync code word identifying the part thereby enabling address identification to be carried out on only that one of the parts. The bits of the transmitted radio identity code may be scrambled prior to being fractionalized into the N parts.
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Inventors:
Burbridge Richard Charles
Roberts David Keith
Jamison Philip Anthony
Gibson Rodney William
Roberts David Keith
Jamison Philip Anthony
Gibson Rodney William
Application Number:
JP52584199A
Publication Date:
June 19, 2001
Filing Date:
November 09, 1998
Export Citation:
Assignee:
Konin Krekka Philips Electronics NV
International Classes:
H04B7/26; H04W52/02; H04B1/12; H04M1/73; H04W88/02; (IPC1-7): H04B7/26
Attorney, Agent or Firm:
Susumu Tsugaru