摘要:
A mobile station implements data transport which allows for handover. The mobile station transmits a second datum (ACK/NACK) in response to a first datum received from a wireless base station, and comprises: a detection unit (39) which detects that handover is to be performed; and a control unit (33) which provides control such that, in cases where the detection has been made, the changeover timing of the transmission destination for the second datum is made later than the changeover timing of the reception channel for the first datum.
摘要:
A mobile station implements data transport which allows for handover. The mobile station transmits a second datum (ACK/NACK) in response to a first datum received from a wireless base station, and comprises: a detection unit (39) which detects that handover is to be performed; and a control unit (33) which provides control such that, in cases where the detection has been made, the changeover timing of the transmission destination for the second datum is made later than the changeover timing of the reception channel for the first datum.
摘要:
To alleviate processing load on a communication apparatus (mobile station) during data transmission using the shared channels, the radio communication apparatus comprises a receiving unit (21) adapted for intermittent reception and arranged to determine whether the data received via the shared channels is intended for its own station or not. The communication apparatus further comprises a transmitting unit (23) arranged for intermittent transmission of information which influences the transmission format of the data. This intermittent transmission takes place a predetermined time before the intermittent reception timing of the receiving unit.
摘要:
The present invention is directed to a handover method, a base station, and a mobile station for a CDMA mobile communication system, to improve the efficiency of inter-frequency handover. Handover is achieved between a mobile station and distributed base stations and the like. The base stations have different traffic channel frequencies. In a normal mode, a signal unit transmitted through a traffic channel consists of four frames. In a compression mode, the base station temporally compresses two normal frames into a single frame period and then transmits the frames twice through the traffic channel. The mobile station switches the reception frequency of a present traffic channel and the reception frequency of a perch channel of the destination base station at intervals of two normal-mode frames at the head of each frame received from the perch channel. The mobile station then restores frames received from the traffic channel in the compression mode to the original frames and processes them. At the same time, the mobile station extracts a system frame number from two frames received from the perch channel.
摘要:
The present invention relates to a handover method in CDMA mobile communication. A base station and a mobile station of the same establishes synchronization after the handover by correcting a discrepancy of a frame number on the base station side to reduce the processing load of the mobile station. Further, at the same time, optimumly performing a phase correction of the frame. In particular, a mobile station MS measures a time difference □ between a frame timing in an upstream traffic channel and a frame timing in a perch channel from a second base station BS2. Further, the second base station transmits the time difference □ to a base station in communication BS1. The base station BS1 sends the time difference □ and a frame number FN1 in the upstream traffic channel in communication to the base station BS2. The base station BS2 corrects the phase of the spread code at the reception of the upstream traffic channel based on the received time difference □ of the frame timing and the notified frame number FN1.
摘要:
A mobile user terminal (UE), which measures downlink channel quality, and which transmits downlink quality information, indicating the measured downlink channel quality and an uplink pilot signal to be used for measuring uplink channel quality to a base station (BS), comprises a transmit time control unit (216), which synchronizes transmit time of the downlink quality information and transmit time of the uplink pilot signal relative to each other. And/or the mobile user terminal (UE) comprises a radio transmitting unit (212) which transmits the downlink quality information and the uplink pilot signal by using the same carrier frequency or by using adjacent carrier frequencies selected from among a plurality of preassigned carrier frequencies.