发明名称 |
Digital radio communications apparatus |
摘要 |
For the purpose of being capable of performing direct inter-handset communications while maintaining inter-handset communications via a base unit, smoothly making a transition from inter-handset communications via a base unit to direct inter-handset communications, and switching to inter-handset communications via a base unit without releasing the communications even in case direct inter-handset communications cannot be established, a local handset includes a direct inter-handset communications controller and a direct inter-handset communications transition controller for making control to establish direct inter-handset communications while maintaining communications with a base unit as well as transmitting control channels for direct inter-handset communications in vacant slots in the receiving time zones for communications with the base unit, while a distant handset includes a direct inter-handset communications controller and a direct inter-handset communications transition controller for scanning control channels for direct inter-handset communications in the time zones other than the slots occupied by communications with the base unit 100.
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申请公布号 |
US2004087323(A1) |
申请公布日期 |
2004.05.06 |
申请号 |
US20030693979 |
申请日期 |
2003.10.28 |
申请人 |
NITTA KOJI;NAKAGAWA KATSUMI;FUKUDA SHINJI;TAKEHISA YOSHIHIRO;ITO TAKATSUGU |
发明人 |
NITTA KOJI;NAKAGAWA KATSUMI;FUKUDA SHINJI;TAKEHISA YOSHIHIRO;ITO TAKATSUGU |
分类号 |
H04W76/02;H04W88/06;H04W92/18;(IPC1-7):H04Q7/20 |
主分类号 |
H04W76/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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