发明名称 |
MOBILE COMMUNICATION EXCHANGE SYSTEM |
摘要 |
PURPOSE:To improve the utilizing efficiency of a control channel by demultiplexing a control channel into a 1st control channel assigned to each subscriber and a 2nd control channel into a used in common to plural subscribers. CONSTITUTION:A signal received from a terminal via an incoming interface line 71 is demultiplexed into information channel (B channel) and control channel (D channel) by a demultiplexer (DMUX) 81. The D channel is demultiplexed into call control information and packet form user information by a frame demultiplex circuit 82, the call control information is multiplexed again with the B channel by a multiplexer (MUX) 83 and the result is sent to a mobile radio transmitter-receiver 9. On the other hand the user information demultiplexed by the circuit 82 is added with an identification number of the transmitter-receiver 9 under the control of a control circuit 84 and sent through a channel of a frequency F2 used in common by plural subscribers. Thus, the efficient use of the entire control channels is attained. |
申请公布号 |
JPS63190492(A) |
申请公布日期 |
1988.08.08 |
申请号 |
JP19870022233 |
申请日期 |
1987.02.02 |
申请人 |
NIPPON TELEGR & TELEPH CORP <NTT> |
发明人 |
ISHINO FUMIAKI;ARITA TAKEMI;ATSUGI GAKUO |
分类号 |
H04B7/26 |
主分类号 |
H04B7/26 |
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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