发明名称 |
Allowing several multiple access schemes for packet data in a digital cellular communication system |
摘要 |
A digital radio network having a first single random access for packet data is enhanced by providing a second access which includes a second random access channel for controlled short data messages and a polled data channel for larger data messages. All mobiles operating within the system can access the first channel but only dual-mode mobiles can connect to the second access.
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申请公布号 |
US6226279(B1) |
申请公布日期 |
2001.05.01 |
申请号 |
US19970956073 |
申请日期 |
1997.10.22 |
申请人 |
TELEFONAKTIEBOLAGET L M ERICSSON (PUBL) |
发明人 |
HANSSON ROLF;HERLITZ ANDERS;FRID LARS |
分类号 |
H04B7/204;H04B7/26;H04L12/403;H04L12/413;H04L12/56;H04W74/02;H04W74/06;H04W74/08;(IPC1-7):H04Q7/00;H04J3/16;H04B7/212 |
主分类号 |
H04B7/204 |
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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