发明名称 |
SPREAD SPECTRUM COMMUNICATION SYSTEM |
摘要 |
PROBLEM TO BE SOLVED: To provide a system by which a moving station does not need to simultaneously transmit/receive two or more carrier frequencies at the time of executing handover to the base station of the different carrier frequency by calling a second base station during a call with the first base station and executing handover through the use of a different spread code in the same carrier frequency. SOLUTION: A moving station synchronously obtains spread codes and frames for the down synchronous channels f1 and c3 of the base station B during the call with the base station A. The moving station measures reception levels of the base stations A and B after it is synchronized with the base station B and measures a timing difference. When the reception level (b) of the base station B is larger than the reception level (a) of the base station A, a handover request is given to the base station A and information on the timing difference is also reported to the base station A at that time. When the reception level (b) of the base station B is smaller than the reception level (a) of the base station A, communication with the base station A is continued. |
申请公布号 |
JPH114211(A) |
申请公布日期 |
1999.01.06 |
申请号 |
JP19980103143 |
申请日期 |
1998.04.14 |
申请人 |
MATSUSHITA ELECTRIC IND CO LTD |
发明人 |
NAGASE HIROSHI |
分类号 |
H04J13/00;H04W36/08;H04W36/18;H04W72/04 |
主分类号 |
H04J13/00 |
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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