Base station host apparatus used in mobile communication system which employs a site diversity receiving method and a signal processing method

A site diversity receiving method for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via a wireless line, and a base-station host apparatus connected to the base stations via a wired line, comprising the steps of

• at the mobile terminal station:
• (a) transmitting a first signal which has been subjected to an error-detection encoding processing and a first error-correction encoding processing;
• at each of the plurality of base stations:
• (b) receiving the first signal transmitted from the mobile terminal station via the wireless line
• (c) performing a first error-correction decoding processing and an error detection processing for the thus-received first signals
• (d) transmitting a second signal including a first error-correction decoded signal that has been subjected to the first error-correction decoding processing and an information data signal to the base-station host apparatus via the wired line;
• and
• at the base-station host apparatus:
• (e) operating based on the results of error detection received from the base stations such that if it is determined that error presence information is transmitted from all of the base stations;
• (f) performing a second error-correction encoding processing for each of second signals received from the base stations;
• (g) composing the second error-correction encoded signals into a third signal, and subjects the composed third signal to a second error-correction decoding processing.

A site diversity receiving method for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via a wireless line, and a base-station host apparatus connected to the base stations via a wired line, comprising the steps of

• at the mobile terminal station:
• (a) transmitting a first signal which has been subjected to an error-detection encoding processing and a first error-correction encoding processing;
• at each of the plurality of base stations:
• (b) receiving the first signal transmitted from the mobile terminal station via the wireless line,
• (c) performing a first error-correction decoding processing for the thus-received signals, and
• (d) transmitting a second signal including a first error-correction decoded signal that has been subjected to the first error-correction decoding processing and an information data signal to the base-station host apparatus via the wired line;
• and
• at the base-station host apparatus:
• (e) performing error detection for the second signal received from each of the base stations,
• (f) operating based on results of the error detection such that if it is determined that error presence information is transmitted from all of the base stations, the base-station host apparatus performs a second error-correction encoding processing for each of the second signals received from the base stations,
• (g) composing the second error-correction encoded signals into a third signal, and
• (h) subjecting the composed third signal to a second error-correction decoding processing.

A site diversity receiving method for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via a wireless line, and a base-station host apparatus connected to the base stations via a wired line, comprising the steps of

• at the mobile terminal station:
• (a) transmitting a first signal which has been subjected to an error-detection encoding processing and a first error correction encoding processing via the wired line;
• at each of the plurality of base stations:
• (b) receiving the first signal transmitted from the mobile terminal station via the wireless line,
• (c) performing a first error correction decoding processing for the thus-received signal,
• (d) transmitting a second signal including a first error-correction decoded signal that has been subjected to the first error-correction decoding processing and an information data signal to the base-station host apparatus via the wired line;
• and
• at the base-station host apparatus:
• (e) performing a second error-correction encoding processing for the second signal received from each of the base stations,
• (f) composing the second error-correction encoded signals into a third signal,
• (g) performing a second error-correction decoding processing for the thus-composed third signal to obtain a second error-correction decoded signal,
• (h) performing error-detection for the error-correction decoded signal, and
• (i) outputting the error-correction decoded signal as a received signal in a case where no errors are detected from the results of error detection.

A site diversity receiving method for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via a wireless line and a base-station host apparatus connected to the base stations via a wired line, comprising the steps of

• at the mobile terminal station:
• (a) transmitting a first signal which has been subjected to a first error-correction encoding processing;
• at each of the plurality of base stations:
• (b) receiving the first signal transmitted from the mobile terminal station via the wireless line,
• (c) performing a first error correction decoding processing for the thus-received signals, and
• (d) transmitting a second signal including a first error-correction decoded signal that has been subjected to the first error-correction decoding processing and an information data signal to the base-station host apparatus via the wired line;
• and
• at the base-station host apparatus:
• (e) performing a second error-correction encoding processing for the second signal received from each of the base stations,
• (f) composing the second error-correction encoded signals into a third signal in such a way as to reflect an error rate obtained from the signals outputted from the base stations, and
• (g) performing a second error-correction decoding processing for the thus-composed third signal.

A site diversity receiving method for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via a wireless line, and a base-station host apparatus connected to the base stations via a wired line, comprising the steps of

• at the mobile terminal station:
• (a) transmitting a first signal which has been subjected to a first error-correction encoding processing;
• at each of the plurality of base stations:
• (b) receiving the first signal transmitted from the mobile terminal station via the wireless line,
• (c) performing a frame reliability detection processing,
• (d) performing a first error-correction decoding processing for the thus-received signal, and
• (e) transmitting a second signal including a first error-correction decoded signal that has been subjected to the frame reliability detecting processing and the first error-correction decoding processing and an information data signal to the base-station host apparatus via the wired line;
• and
• at the base-station host apparatus:
• (f) performing a second error correction encoding processing for the second signal received from each of the base stations,
• (g) composing the second error-correction encoded signals into a third signal in such a way as to reflect the frame reliability information received from the respective base stations, and
• (h) performing a second error-correction decoding processing for the thus-composed third signal.

A site diversity receiving method for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via a wireless line, and a base-station host apparatus connected to the base stations via a wired line, comprising the steps of

• at the mobile terminal station:
• (a) transmitting a first signal which has been subjected to a first error-correction encoding processing;
• at each of the plurality of base stations:
• (b) receiving the first signal transmitted from the mobile terminal station via the wireless line,
• (c) performing a frame reliability detecting processing for the thus-received signals,
• (d) performing a first error-correction decoding processing for the signal through use of the result of detection of reliability in order to produce an error-correction decoded signal and a soft determination output, and
• (e) transmitting a second signal including a first error-correction decoded signal and an information data signal to the base-station host apparatus via the wired line;
• and
• at the base-station host apparatus:
• (f) performing a second error-correction encoding processing for the signals received from the base stations through use of the soft determination output information in order to produce error-correction encoded signals with soft determination outputs,
• (g) composing the second error-correction encoded signals into a third signal by utilization of the soft determination outputs produced by the error-correction encoding processing, and
• (h) performing a second error-correction decoding processing for the thus-composed third signal.

A site diversity receiving method for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via a wireless line and a base-station host apparatus connected to the base stations via a wired line, comprising the steps of

• at the mobile terminal station:
• (a) transmitting a first signal which has been subjected to an error-detection encoding processing and a first error-correction encoding processing;
• at each of the plurality of base stations:
• (b) receiving the first signal transmitted from the mobile terminal station via the wireless line,
• (c) performing a first error-correction decoding processing for the thus-received signals, and
• (d) transmitting a second signal including a first error-correction decoded signal that has been subjected to the first error-correction decoding processing and an information data signal to the base-station host apparatus via the wired line;
• and
• at the base-station host apparatus:
• (e) performing an error detection processing for the second signal received from each of the base stations, and
• (f) operating such that if there is not found a first error in the signals received from all of the base stations, the base-station host apparatus outputs the signals received from the respective base stations as received signals, and if there is found the first error in the signals received from the base stations, the base-station host apparatus composes the signals received from the base stations into one signal and detects a second error in the composed signal, that if there is not found the second error in the composed third signal, the base-station host apparatus outputs the composed third signal as a received signal, and if there is found an error in the composed third signal, the base-station host apparatus performs a second error-correction encoding processing for the signals received from the base station, composes the second error-correction encoded signals into a third signal, performs a second error-correction decoding processing for the composed third signal, and detects a third error in the error-correction decoded signal, and that if there is not found the third error in the second error-correction decoded signal, the base-station host apparatus outputs the second error-correction decoded signal as a received signal.

A base station host apparatus for use in a mobile communications system which employs a site diversity receiving method, for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via wireless lines, and said base-station host apparatus connected to the base stations via wired lines, wherein a first signal subjected to a first error-correction encoding processing and transmitted from the mobile terminal station is received by said plurality of base stations where the first signals are further subjected to a first error-correction decoding processing, and wherein second signals including the first error-correction decoded signals and information data signals are received via the wired lines by the base-station host apparatus, the base-station host apparatus comprising:

• a second error-correction encoding section which performs a second error-correction encoding processing for the error-correction decoded second signals outputted from the respective base stations and outputs the second error-correction encoded signals;
• a composing section which composes the second error-correction encoded signals into a third signal;
• and
• a second error-correction decoding section which performs a second error-correction decoding processing for the composed third signal outputted from the composing section.

A base-station host apparatus for use in a mobile communications system which employs a site diversity receiving method, for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via wireless lines, and a base-station host apparatus connected to the base stations via wired lines, wherein a signal subjected to an error detection processing and a first error-correction encoding processing and transmitted from the mobile terminal station is received by said plurality of base stations, where the first signals are further subjected to a first error-correction decoding processing and an error detection processing, and wherein the base-station host apparatus receives second signals, said second signals including the first error-correction decoded signal and an information signal, via the wired lines error presence/absence information obtained as a result of the error detection processings performed by the plurality of base-stations, the base-station host apparatus comprising:

• an error determination section which performs an error determination processing upon receipt of the error presence/absence information from each of the base stations;
• a second error-correction encoding section which performs second error-correction encoding processing for the second signals outputted from the respective base stations and outputs thus obtained second error-correction encoded signals;
• a composing section which composes the second error-correction encoded signals received from the second error-correction encoding section into a third signal;
• a second error-correction decoding section which performs second error-correction decoding processing for the composed third signal outputted from the composing section;
• and
• a gate section which outputs the third signal received from the second error-correction decoding section as a received output if the error determination section determines that error presence information is sent from all of the base stations.

A base-station host apparatus for use in a mobile communications system which employs a site diversity receiving method, for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via a wireless lines, and a base-station host apparatus connected to the base stations via a wired lines, wherein a first signal, said first signal including a signal that has been subjected to error-correction decoding processing, subjected to an error-detection encoding processing and a first error-correction encoding processing and transmitted from the mobile terminal station is received by said plurality of base stations, where the first signals are further subjected to the first error-correction decoding processing, and wherein the base-station host apparatus receives second signals, said second signals including the first error-correction decoded signal and an information signal, via the wired lines from the plurality of base stations, the base-station host apparatus comprising:

• an error detection section which subjects to detect the second signal received from each of the base stations and outputs error presence/absence information;
• an error determination section which performs an error determination operation upon receipt of the error presence/absence information from the error detection section;
• a second error-correction encoding section which performs a second error-correction encoding processing for the second signal outputted from the respective base stations and outputs thus obtained second error-correction encoded signals;
• a composing section which composes the second error-correction encoded signals received from the second error-correction encoding section into a third signal;
• a second error-correction decoding section which performs a second error-correction decoding processing for the composed third signal outputted from the composing section;
• and
• a gate section which outputs the signal received from the second error-correction decoding section as a received output if the error determination section determines that error presence information is sent from all of the base stations.

A base-station host apparatus for use in a mobile communications system which employs a site diversity receiving method, for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via wireless lines, and said base-station host apparatus connected to the base stations via wired lines, wherein a first signal, said first signal including a signal that has been subjected to first error-correction decoding processing, subjected to an error-detection encoding processing and a first error-correction encoding processing and transmitted from the mobile terminal station is received by a plurality of base stations, where the first signals are further subjected to a first error-correction decoding processing, and wherein the base-station host apparatus receives second signals, said second signals including the first error-correction decoded signal and an information signal, via the wired lines from the plurality of base stations, the base-station host apparatus comprising:

• a first composing section which composes into one signal the second signals received from the base stations;
• an error detection section which performs error detection for the thus-composed signal;
• a second error-correction encoding section which performs a second error-correction encoding processing for the error-correction decoded signals outputted from the respective base stations and outputs thus obtained second error-correction encoded signals;
• a second composing section which composes the second error-correction encoded signals received from the second error-correction encoding section into a third signal;
• a second error-correction decoding section which performs a second error-correction decoding processing for the composed third signal outputted from the second composing section;
• and
• a gate section which outputs the signal received from the second error-correction decoding section as a received output if the error detection section determines that the composed third signal includes error presence information.

A base-station host apparatus for use in a mobile communications system which employs a site diversity receiving method, for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via wireless lines, and a base-station host apparatus connected to the base stations via wired lines, wherein a first signal, said first signal including a signal that has been subjected to error-correction decoding processing, subjected to an error-detection processing and a first error-correction encoding processing and transmitted from the mobile terminal station is received by said plurality of base stations, where the first signals are further subjected to a first error-correction decoding processing, and wherein the base-station host apparatus receives second signals, said second signals including the first error-correction decoded signal and an information signal, via the wired lines from the plurality of base stations, the base-station host apparatus comprising:

• a second error-correction encoding section which performs a second error-correction encoding processing for the first error-correction decoded signals received from the respective base stations;
• a composing section which composes the second error-correction encoded signals into a third signal;
• a second error-correction decoding section which performs a second error-correction decoding processing for the thus composed third signal;
• an error detection section which performs error detection for the second error-correction decoded signal received from the second error-correction decoding section;
• and
• a gate section which outputs the signal received from the second error-correction decoding section as a received output if the error detection section detects no errors.

A base-station host apparatus for use in a mobile communications system which employs a site diversity receiving method, for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via wireless lines, and said base-station host apparatus connected to the base stations via wired lines, wherein a first signal, said first signal including a signal that has been subjected to error-correction decoding processing, subjected to a first error-correction encoding processing transmitted from the mobile terminal station is received by a plurality of base stations, where a first signals are further subjected to a first error-correction decoding processing, and wherein the base-station host apparatus receives second signals, said second signals including the first error-correction decoded signal and an information signal, via the wired lines from the plurality of base stations, the base-station host apparatus comprising:

• an error rate measurement section which measures the error rate of the error-correction decoded signal outputted from each of the base stations;
• a second error-correction encoding section which performs a second error-correction encoding processing for the first error-correction decoded signals received from the respective base stations;
• a composing section which composes the second error-correction encoded signals into a third signal in such a way as to reflect the error rate measured by the error rate measurement section;
• and
• a second error-correction decoding section which performs a second error-correction decoding processing for the thus composed third signal.

A base-station host apparatus for use in a mobile communications system which employs a site diversity receiving method, for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via wireless lines, and said base-station host apparatus connected to the base stations via wired lines, wherein a first signal, said first signal including a signal that has been subjected to error-correction decoding processing, subjected to a first error-correction encoding processing, and transmitted from the mobile terminal station is received by said plurality of base stations, where frame reliability information regarding the received first signal is detected and the received first signal is subjected to a first error-correction decoding processing, and wherein the base-station host apparatus receives second signals, said second signals including the first error-correction decoded signal and an information signal having the frame reliability information from the plurality of base stations, via the wired lines the base-station host apparatus comprising:

• a frame reliability information receiving section which receives frame reliability information from each of the base stations;
• a second error-correction encoding section which performs a second error-correction encoding processing for the first error-correction decoded signals received from the respective base stations;
• a composing section which composes the second error-correction encoded signals outputted from the error-correction encoding section into a third signal in such a way as to reflect the frame reliability information received by the frame reliability information receiving section;
• and
• a second error-correction decoding section which performs a second error-correction decoding processing for the thus composed third signal.

A base-station host apparatus for use in a mobile communications system which employs a site diversity receiving method, for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via wireless line, and said base-station host apparatus connected to the base stations via wired lines, wherein a first signal, said first signal including a signal that has been subjected to a first error-correction encoding processing and transmitted from the mobile terminal station is received by said plurality of base stations, where the first signals are further subjected to a first error-correction decoding processing in order to output first error-correction decoded signals with soft determination outputs, and wherein the base-station host apparatus receives second signals, said second signals including the first error-correction decoded signals and an information signals, having the soft determination via the wired lines, outputted from the plurality of base stations, the base-station host apparatus comprising:

• a second error-correction encoding section which performs a second error-correction encoding processing for the first error-correction decoded signals received from the respective base stations through use of the soft determination output information in order to output thus obtained second error-correction encoded signals with soft determination outputs;
• a composing section which composes the second error-correction encoded signals outputted from the second error-correction encoding section into a third signal by utilization of the soft determination outputs produced by the second error-correction encoding processing;
• and
• a second error-correction decoding section which performs a second error-correction decoding processing for the thus-composed third signal.

A base-station host apparatus for use in a mobile communications system which employs a site diversity receiving method, for use in a mobile communications system that includes a mobile terminal station, a plurality of base stations connected to the mobile terminal station via wireless lines, and said base-station host apparatus connected to the base stations via wired lines, wherein a first signal, said first signal including a signal that has been subjected to a first error-correction encoding processing and transmitted from the mobile terminal station is received by said plurality of base stations, where the first signals are further subjected to a first error-correction decoding processing, and wherein the base-station host apparatus receives second signals, said second signals including the first error-correction decoded signals and information signals, via the wired lines from the plurality of base stations, the base-station host apparatus comprising:

• a first composing section which composes into one signal the first error-correction decoded signals received from the base stations;
• a second error correction encoding section which performs a second error-correction encoding processing for the first error-correction decoded signals received from the base stations to thereby output second error-correction encoded signals;
• a second composing section which composes the second error-correction encoded signals from the second error-correction encoding section into a third signal;
• a second error-correction decoding section which performs a second error-correction decoding processing for the composed third signal outputted from the second composing section;
• a signal selection section which selects any one from the signals received from the base stations, the composed third signal outputted from the first composing section, and the signal outputted from the second error-correction decoding section;
• a first error detection section which detects a first error in the error-correction decoded signal received from each of the base stations;
• a second error detection section which detects a second error in the signal outputted from the first composing section;
• a third error detection section which detects a third error in the third signal outputted from the second error-correction decoding section;
• and
• a signal selection control section which receives the results of detection from the first, second, and third error detection sections, wherein
• the control section makes a determination as to whether or not there is found an error in the signal received from each of the base stations, through use of the detection result received from the first error detection section, and causes the signal selection section to output the signals received from the base stations as received signals if no errors are detected from the second signals received from the base stations;
• if there are found errors in all the second signals received from the base stations the control section makes a determination as to whether or not there is found an error in the second signal output, through use of the detection result received from the second error detection section, and causes the signal selection section to output the composed signal as a received signal if no errors are detected from the composed signal;
• if there is found an error in the composed signal, the control section makes a determination as to whether or not there is found an error in the signal outputted from the error-correction decoding section, through use of the detection result received from the third error detection section;
• and
• if no errors are detected from the signal outputted from the error-correction decoding section, the control section causes the signal selection section to output the error-correction decoded signal as a received signal.

A reception signal processing method performed in a base-station host apparatus of a mobile communication system employing a site diversity receiving method, said reception signal processing method comprising:

• a receiving step for receiving a first error-correction decoded signal from each of a plurality of base stations which receive a transmission signal from a mobile terminal station, said mobile terminal transmitting a first signal, said first signal including a signal that has been subjected to a first error-correction encoding processing as the transmission signal, and each of said base stations performing a first error-correction decoding processing for the transmission signal to obtain the first error-correction decoded signal;
• a second error-correction encoding processing step for performing second error correction encoding processing for each of the second signals received via wired lines from the respective base stations in said receiving step;
• a composing step for composing the second signals subjected to the second error-correction encoding processing to obtain a composed third signal;
• and
• second error-correction decoding processing for performing second error-correction decoding processing for the composed third signal.

A reception signal processing method performed in a base-station host apparatus of a mobile communication system employing a site diversity receiving method, said reception signal processing method comprising:

• a receiving step for receiving a first error-correction decoded signal and error presence information from each of a plurality of base stations which receive a transmission signal from a mobile terminal station, said mobile terminal transmitting a first signal, said first signal including a signal that is subjected to a first error-correction encoding processing as the transmission signal, and each of said base stations performing a first error-correction decoding processing for the transmission signal to obtain the first error-correction decoded signal and also performing an error detection processing to output error presence/absence information when an error is detected;
• a judging step for making judgment as to whether or not the base stations output error presence information from the result of error detection;
• a second error-correction encoding processing step for performing a second error correction encoding processing for each of the second signals received via wired lines from the respective base stations when it is judged in the judging step that all of the respective base stations output the error presence information;
• a composing step for composing the signals subjected to the second error-correction encoding processing to obtain a composed third signal;
• and
• a second error-correction decoding processing for performing a second error-correction decoding processing for the composed third signal.

A reception signal processing method performed in a base-station host apparatus of a mobile communication system employing a site diversity receiving method, said reception signal processing method comprising:

• a receiving step for receiving a second signal, said second signal including a first error-correction decoded signal and an information data signal via wired lines from each of a plurality of base stations which receive a first signal transmitted from a mobile terminal station, said mobile terminal transmitting the first signal, said first signal including a signal that is subjected to a first error-correction encoding processing as the transmission signal, and each of said base stations performing a first error-correction decoding processing for the transmission signal to obtain the first error-correction decoded signal;
• an error detecting step for performing an error detection processing for each of the second signals received from the respective base stations in said receiving step;
• a judging step for making judgment as to whether or not the base stations output error presence information from the result of error detection in the error detecting step;
• a second error-correction encoding processing step for performing a second error correction encoding processing for each of the second signals received from the respective base stations when it is judged in the judging step that each of the second signals received from the respective base stations contains an error;
• a composing step for composing the second signals subjected to the second error-correction encoding processing to obtain a composed third signal;
• and
• a second error-correction decoding processing for performing a second error-correction decoding processing for the composed third signal.

A reception signal processing method performed in a base-station host apparatus of a mobile communication system employing a site diversity receiving method, said reception signal processing method comprising:

• a receiving step for receiving a second signal, said second signal including a first error-correction decoded signal and an information data signal, via wired lines from each of a plurality of base stations which receive a first signal transmitted from a mobile terminal station, said mobile terminal transmitting the first signal subjected to a first error-correction encoding processing as the transmission signal, and each of said base stations performing a first error-correction decoding processing for the transmission signal to obtain the first error-correction decoded signal;
• a second error-correction encoding processing step for performing a second error correction encoding processing for each of the second signals received from the respective base stations in said receiving step;
• a composing step for composing the second signals subjected to the second error-correction encoding processing to obtain a composed third signal;
• a second error-correction decoding processing step for performing a second error correction decoding processing for the composed third signal;
• a second error detecting step for performing a second error detection processing for the signal subjected to the second error-correction decoding processing;
• and
• an outputting step for outputting the signal subjected to the second error-correction decoding processing as a received signal when it is judged in the second error detection step that the signal subjected to the second error-correction decoding processing contains no error.

A reception signal processing method performed in a base-station host apparatus of a mobile communication system employing a site diversity receiving method, said reception signal processing method comprising:

• a receiving step for receiving a second signal, said second signal including a first error-correction decoded signal and an information data signal, via wired lines from each of a plurality of base stations which receive a first signal transmitted from a mobile terminal station, said mobile terminal transmitting the first signal subjected to a first error-correction encoding processing as the transmission signal, and each of said base stations performing a first error-correction decoding processing for the transmission signal to obtain the first error-correction decoded signal;
• a second error-correction encoding processing step for performing a second error correction encoding processing for each of the second signals received from the respective base stations in said receiving step;
• a composing step for composing the second signals subjected to the second error-correction encoding processing, while reflecting an error rate obtained from the second signals from the respective base stations, in order to obtain a composed third signal;
• and
• a second error-correction decoding processing for performing a second error-correction decoding processing for the composed third signal.

A reception signal processing method performed in a base-station host apparatus of a mobile communication system employing a site diversity receiving method, said reception signal processing method comprising:

• a receiving step for receiving frame reliability information and a second signal, said second signal including a first error-correction decoded signal and an information data signal, via wired lines from each of a plurality of base stations which receive a first signal transmitted from a mobile terminal station, said mobile terminal transmitting a signal subjected to a first error-correction encoding processing as the transmission signal, and each of said base stations performing a first error-correction decoding processing for the transmission signal to obtain the first error-correction decoded signal and also detecting frame reliability to output the frame reliability information;
• a second error-correction encoding processing step for performing a second error correction encoding processing for each of the second signals received from the respective base stations in said receiving step;
• a composing step for composing the second signals subjected to the second error-correction encoding processing, while reflecting the frame reliability information received from the respective base stations, in order to obtain a composed third signal;
• and
• a second error-correction decoding processing for performing a second error-correction decoding processing for the composed third signal.

A reception signal processing method performed in a base-station host apparatus of a mobile communication system employing a site diversity receiving method, said reception signal processing method comprising:

• a receiving step for receiving a second signal, said second signal including a first error-correction decoded signal and an information data signal, via wired lines accompanied by soft determination output information, from each of a plurality of base stations which receive a first signal transmitted from a mobile terminal station, said mobile terminal transmitting the first signal subjected to a first error-correction encoding processing as the transmission signal, and each of said base stations performing a first error-correction decoding processing, accompanied by soft determination output, for the transmission signal to obtain the first error-correction decoded signal;
• a second error-correction encoding processing step for performing a second error correction encoding processing, accompanied by soft determination output, for each of the second signals received from the respective base stations in said receiving step through use of the soft determination output information;
• a composing step for composing the second signals subjected to the second error-correction encoding processing, while utilizing the soft determination output outputted during the second error correction encoding processing, in order to obtain a composed third signal;
• and
• a second error-correction decoding processing for performing a second error-correction decoding processing for the composed third signal.

A reception signal processing method performed in a base-station host apparatus of a mobile communication system employing a site diversity receiving method, said reception signal processing method comprising:

• a receiving step for receiving a second signal, said second signal including a first error-correction decoded signal and an information data signal which have error presence information, via wired lines from each of a plurality of base stations which receive a first transmitted from a mobile terminal station, said mobile terminal transmitting the first signal subjected to a first error-correction encoding processing as the transmission signal, and each of said base stations performing a first error-correction decoding processing for the transmission signal to obtain the first error-correction decoded signal;
• a first error detecting step for detecting an error from the second signals received from the respective base stations in the receiving step;
• a first outputting step for outputting, as a received signal, the signal received from the respective base stations when no error is detected, in the first error detecting step, from any one of the second signals received from the respective base stations;
• a first composing step for obtaining a composed third signal by composing second signals received from the respective base stations when an error is detected, in the first error detecting step, from each of the second signals received from the respective base stations;
• a second error detecting step for detecting an error from the composed third signal obtained in the first composing step;
• a second outputting step for outputting, as a received signal, the composed third signal when no error is detected, in the second error detecting step, from the composed third signal;
• a second error-correction encoding processing step for performing a second error correction encoding processing for each of the second signals received from the respective base stations when an error is detected, in the second error detecting step, from the composed third signal;
• a second composing step for obtaining a composed fourth signal by composing the signals subjected to the second error correction encoding processing;
• a second error-correction decoding processing step for performing a second error-correction decoding processing for the composed fourth signal obtained in the second composing step;
• a third error detecting step for detecting an error from the signal subjected to the second error-correction decoding processing;
• and
• a third outputting step for outputting, as a received signal, the fourth signal subjected to the second error-correction decoding processing when no error is detected, in the second error detecting step, from the fourth signal subjected to the second error-correction decoding processing.