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Patent Searching and Data


Title:
WIRELESS COMMUNICATION SYSTEM
Document Type and Number:
Japanese Patent JP2004172772
Kind Code:
A
Abstract:

To provide a wireless communication system capable of receiving the packets for real time communication in real time even in a power-saving mode wherein at least part of a wireless mobile terminal is intermittently started.

A multimedia server 205, a multimedia terminal 206, and a wireless base station 202 for processing real time data are connected to a communication cable 204 configuring a LAN, and the wireless base station 202 makes wireless communication with wireless mobile terminals 2031 to 203N. The wireless mobile terminals 2031 to 203N are switched between the power-saving mode where part of them is started and an ordinary mode where they are always started. Each of the wireless mobile terminals discriminates the presence/absence of the arrival of a packet signal for a period being a multiple of an optional integer of the period of notice information of the reception of the packet signal by the wireless base station 202 in the power-saving mode, discriminates whether or not the packet signal requires real time communication by a protocol part of the packet signal when the packet signal arrives, and shifts to the ordinary mode until the reception of the packet signal needing real time communication is finished.


Inventors:
KUROKAWA HIDETAKA
KAKUMARU TAKAHIRO
MORIMOTO SHINICHI
Application Number:
JP2002334203A
Publication Date:
June 17, 2004
Filing Date:
November 18, 2002
Export Citation:
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Assignee:
NEC CORP
International Classes:
H04B1/16; H04B7/005; H04B7/26; H04L12/28; H04M1/73; H04W52/02; H04W76/02; H04W84/12; (IPC1-7): H04B7/26; H04L12/28
Attorney, Agent or Firm:
Umeo Yamauchi