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    • 72. 发明授权
    • System and method for code division multiple access communication, and base station and terminal apparatus for same system
    • 用于码分多址通信的系统和方法,以及用于同一系统的基站和终端装置
    • US06647002B1
    • 2003-11-11
    • US09351197
    • 1999-07-09
    • Kenji SudaKazuo KawabataKazuhisa Obuchi
    • Kenji SudaKazuo KawabataKazuhisa Obuchi
    • H04B7216
    • H04W72/1278H04L1/1642H04L1/1854H04L1/188H04L1/1887H04W72/1242H04W74/008H04W74/0833H04W74/0866
    • In a code division multiple access communicating system, a base station has a receiving means receiving access signals from plural terminal apparatus, and an acknowledge information transmitting means collectively putting acknowledge information to reception of the access signals for the terminal apparatus in a transmission frame when the receiving means receives the access signals from the terminal apparatus and transmitting the frame to the plural terminal apparatus, while each of the terminal apparatus has an acknowledge information receiving means receiving a plural pieces of acknowledge information from the acknowledge information transmitting means of the base station, and a transmitting means again accessing to the base station according to the acknowledge information for its own terminal apparatus among the plural pieces of acknowledge information, thereby avoiding conflict of access timings between the terminal apparatus whose acknowledge information has been put, and thus suppressing a decrease of the throughput.
    • 在码分多址通信系统中,基站具有从多个终端装置接收接入信号的接收装置,以及确认信息发送装置,当发送帧中的终端装置接收到接收信号时, 接收装置从终端装置接收接收信号并将该帧发送到多个终端装置,而每个终端装置具有从基站的确认信息发送装置接收多条确认信息的确认信息接收装置, 以及发送装置,根据多个确认信息中的本身的终端装置的确认信息再次访问基站,从而避免已经放入了确认信息的终端装置之间的访问定时的冲突, 降低吞吐量。
    • 73. 发明授权
    • Handover method, base station, mobile station, and mobile communication system
    • 移交方式,基站,移动台,移动通信系统
    • US06597674B1
    • 2003-07-22
    • US09371344
    • 1999-08-10
    • Kazuhisa ObuchiKazuo KawabataTetsuya Yano
    • Kazuhisa ObuchiKazuo KawabataTetsuya Yano
    • H04Q700
    • H04W36/02H04W36/18
    • 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.
    • 本发明涉及用于CDMA移动通信系统的切换方法,基站和移动台,以提高频率间切换的效率。 在移动台和分布式基站等之间实现切换。 基站具有不同的业务信道频率。 在正常模式下,通过业务信道发送的信号单元由四个帧组成。 在压缩模式中,基站将两个正常帧时间压缩为单个帧周期,然后通过业务信道发送两帧。 移动台在从导频信道接收的每帧的头部以两个正常模式帧的间隔切换当前业务信道的接收频率和目的地基站的导频信道的接收频率。 然后,移动台将以压缩模式从业务信道接收到的帧恢复到原始帧并对其进行处理。 同时,移动台从从导频信道接收的两帧中提取系统帧号。