Mobile communication system with cell-site switching for intra-cell handoff
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United States of America Patent
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-
May 30, 1995
Grant Date -
N/A
app pub date -
Jul 9, 1993
filing date -
Jul 9, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a TDMA cellular mobile communication system, incoming signals from the public switched network are converted by speech coder/data compressor units of a MTSO (mobile telephone switching office) to low-bit-rate signals and combined into a first TDM signal for transmission to a base station. The components of the first TDM signal are respectively routed according to a channel assignment signal and fed into desired modulators which are periodically activated according to the channel assignment signal to transmit signals on assigned channels to mobile units. Signals from the mobile units are received by demodulators at the base station and combined into a second TDM signal which is transmitted to the MTSO. The components of the second TDM signal are routed according to the channel assignment signal to appropriate speech decoder/data expander units for conversion to the original high-bit-rate signals for transmission to the network.
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