发明名称 |
METHOD AND APPARATUS FOR SOFT HANDOFF COMMUNICATIONS IN A COMMUNICATION SYSTEM OPERATING ACCORDING TO MULTIPLE COMMUNICATION STANDARDS |
摘要 |
A soft handoff operation is provided for a first signal transmitted according to a first communication standard (IS-95B) and a second signal transmitted according to a second communication standard (IS-95C). A mobile station (MS) (204) receives the first signal, detects a pilot signal, measures pilot signal strength, and transmits a pilot strength measurement message. When the MS fails to receive a handoff direction message after transmitting the pilot strength message, the MS searches for a detecting presence of a broadcast control channel (BCCH) associated with a type IS-95C cell site (202) and measures a carrier-to-interference ratio of the BCCH. The MS compares the carrier-to-interference ratio to a threshold, and when the ratio is above the threshold, initiates a second communication according to the IS-95C standard, thus initiating a soft handoff operation and allowing cell sites (202, 203) to transmit information according to the IS-95C and IS-95B standards, respectively.
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申请公布号 |
WO0178240(A3) |
申请公布日期 |
2002.07.04 |
申请号 |
WO2001US10210 |
申请日期 |
2001.03.30 |
申请人 |
MOTOROLA, INC. |
发明人 |
JALLOUL, LOUAY;TENBROOK, KEITH, A.,;CHEN, JIANGNAN;ROTSTEIN, RON;LUZ, YUDA, YEHUDA |
分类号 |
H04W36/14;H04W36/18;(IPC1-7):H04Q7/20 |
主分类号 |
H04W36/14 |
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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