Abstract: Method and device for detecting the position of a base station in mobile terminal positioning system, which improves the success rate for detecting the position and improves the detection accuracy. The device is composed of a memory to record the received signals, a counter to record the time the signals were received, and a register to temporarily store the counter values; and also a position module interrupt signal sent to the memory during recording of a signal, and a data link interrupt signal issued during data link processing, and a position module information table for recording information relating to the memory, and a MAC information table for recording information relating to MAC processing. The counter value is stored in the register during issue of a position module interrupt, and the counter value is recorded in the position module information table. The counter value stored in the register is stored in the MAC information table during issue of a data link interrupt.

Abstract: In a position detection system for detecting a position of a terminal apparatus of a radio communications system, a position detection time is shortened using a position detection method for determining signal times-of-arrival between the terminal apparatus and base stations neighboring the terminal apparatus. According to the present invention, means for generating a database in which received power information about signals transferred between the terminal apparatus and the base stations neighboring the terminal apparatus corresponds to position information about the terminal apparatus, and for determining the position information by searching received power information obtained in the position detection from the database, and means for determining the position by use of signal times-of-arrival are executed in parallel. Then, the use of a result of the means which has detected the position earlier than another means shortens the position detection time.

Abstract: An invention for a system and method of delivering contents to a user terminal from a contents delivery server is provided. In one example, the method includes determining reservation information, determining accessibility to the contents delivery server, sending a delivery request to the contents delivery server according to the reservation information, and receiving contents from the contents delivery server.

Abstract: A signal pair interference power ratio of the received signal at a user terminal is obtained and this ratio is then compared with the signal pair interference power ratio required for correct demodulation. Accordingly, the user terminals can be classified into those in the non-interference domain and those in the interference domain. A plurality of access points make the simultaneous communications to the user terminals in the non-interference domain and also make the communications on the time-division basis to the user terminals in the interference domain.

Abstract: A charging system for use in a network composed of wireless terminals with a repeater function. As each terminal with a repeater function receives a communication session start request from a user terminal, it searches for a destination user terminal; when it finds the destination user terminal, it transfers the signal sent from the requesting user terminal to the destination user terminal without the mediation of base stations. The information about the amount of data thus transferred or communication time for transferring data is sent to the charging system which is under the control of the communications service provider concerned.

Abstract: A system and method are provided for wireless communication. In one example, a wireless communication system that enhances total system throughput is provided. The system performs parallel data transmission from a plurality of access points to a plurality of user terminals. On terminals with power control function, their transmit power can be set to minimize interference. The wireless communication system comprises a management server which performs centralized management of time of access-point-to-terminal packet transmission, access points, and user terminals that perform data transmission, according to transmission time control information from the management server. Transmit queues for measuring downlink traffic and receive queues for measuring uplink traffic are provided on the access points or the management server. The system determines uplink and downlink periods from the transmit and receive queue lengths.

Abstract: A communication system having an excellent communication path capacity characteristic even in an insight transmission environment in which a transmitter and a receiver can see each other directly in an MIMO communication system and a wireless communication device for the communication system, including: a wireless device having a transmitter for distributing transmission data including encoded data and a training signal to a plurality of antennas, and transmitting the data as radio signals from the plurality of antennas at a predetermined timing; a plurality of wireless devices having repeaters each for receiving the radio signal, storing the radio signal into a buffer so that the radio signal is delayed by predetermined time, and transmitting the radio signal delayed; and a wireless device having a receiver for receiving the radio signals from the plurality of second wireless devices by a plurality of antennas and demodulating the encoded data by using the training signal multiplexed on the received radio si

Abstract: A charging system for use in a network composed of wireless terminals with a repeater function. As each terminal with a repeater function receives a communication session start request from a user terminal, it searches for a destination user terminal; when it finds the destination user terminal, it transfers the signal sent from the requesting user terminal to the destination user terminal without the mediation of base stations. The information about the amount of data thus transferred or communication time for transferring data is sent to the charging system which is under the control of the communications service provider concerned.

Abstract: A charging system for use in a network composed of wireless terminals with a repeater function. As each terminal with a repeater function receives a communication session start request from a user terminal, it searches for a destination user terminal; when it finds the destination user terminal, it transfers the signal sent from the requesting user terminal to the destination user terminal without the mediation of base stations. The information about the amount of data thus transferred or communication time for transferring data is sent to the charging system which is under the control of the communications service provider concerned.

Abstract: To provide a turbo decoder reducing power consumption by reducing an operational processing amount while ensuring sufficient error correction capability, there is provided a constitution including an input signal memory for storing turbo-coded received data, a decoder for executing SOVA decoding, a decoded result memory for storing a decoded result, a control block for executing repeated decoding, a memory stored with an interleave pattern, and judging means for judging reliability of a decoded result and the reliability of the decoded result is judged based on a soft decision value outputted from the SOVA decoder and when desired reliability is satisfied by the judgment result, the repeated decoding is finished.