发明名称 |
Messaging system having roaming capability |
摘要 |
A messaging system capable of transmitting messages to receivers which roam between coverage areas. In one configuration, a coverage area (100) is divided into a plurality of zones (110). A single simulcast system identification (SSID) number is assigned which consists of a local identification number which identifies the coverage area (100), a zone identifier which identifies a zone (110) within the coverage area, traffic splitting flags and a frequency. For larger roaming areas, a network (200) is defined as consisting of a plurality of service areas (210) and is identified by network roaming identification information (NRI). NRI information and/or SSID information is stored in a receiver according to desired coverage and like information is transmitted in the corresponding zone or service area.
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申请公布号 |
US5625351(A) |
申请公布日期 |
1997.04.29 |
申请号 |
US19950378136 |
申请日期 |
1995.01.24 |
申请人 |
MOTOROLA, INC. |
发明人 |
WILLARD, DAVID F.;LAFLIN, BARBARA D.;KUZNICKI, WILLIAM J.;ARONSON, MARK;EATON, ERIC T. |
分类号 |
H04W84/02;(IPC1-7):H04B7/26 |
主分类号 |
H04W84/02 |
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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