Data transmission method and apparatus of mobile radiocommunicat

Details Data transmission method and apparatus of mobile radiocommunicat Data transmission method and apparatus of mobile radiocommunicat

1995-12-08

1999-08-17

Chin, Wellington

Telecommunications

Transmitter and receiver at same station

Radiotelephone equipment detail

455550, 455552, H04Q 720

Patent

active

059407727

ABSTRACT:
A data transmission system for a radio section is improved in that the transmission rate can change in response to circuit conditions in the radio section, and FEC (forward error correction) and ARQ (automatic repeat request) can be used singly or in combination to achieve maximum transmission efficiency. The system includes an interworking apparatus 6 connected to a mobile communication switching network. Interworking apparatus 6 includes interface section 61 for transmitting and receiving a wire transmission signal from a fixed telephone network and a radio transmission signal from a mobile station, protocol conversion section 63 for converting a wire transmission signal to a radio transmission signal and for converting a radio transmission signal to a wire transmission signal, storage section 64 in which information regarding transmission rates and error controlling modes is stored in advance, and control section 62 which refers to storage section 64 and selects a transmission rate and an error controlling mode in response to circuit conditions of the radio section.

REFERENCES:
patent: 4584685 (1986-04-01), Gajjar
patent: 4829524 (1989-05-01), Yoshida
patent: 4837800 (1989-06-01), Freeburg et al.
patent: 4866712 (1989-09-01), Chao
patent: 4939731 (1990-07-01), Reed et al.
patent: 5010553 (1991-04-01), Scheller et al.
patent: 5105423 (1992-04-01), Tanaka et al.
patent: 5214637 (1993-05-01), Sridhar et al.
Error Control Coding, Shu Lin et al., pp. 458-459, 477-481, 1993.

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