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    • 87. 发明公开
    • 부호분할다중접속방식에서역방향공통채널의임의접속장치및방법
    • 代码段多路连接方法的后向通用通道中的随机访问装置和方法
    • KR1020000038285A
    • 2000-07-05
    • KR1019980053228
    • 1998-12-05
    • 한국전자통신연구원
    • 김태중방승찬심재룡한기철
    • H04B7/216
    • H04W52/246H04B1/707H04B2201/70701H04B2201/70707H04W52/242H04W52/325H04W52/50
    • PURPOSE: A random access apparatus and method in backward common channel of code division multi connection method is provided to improve a network efficiency by identifying as to whether a transmitted preamble is received and transmitting data or retransmitting the preamble according to the identified result. CONSTITUTION: A transmission resource determining unit(110) selects a preamble signature corresponding to a traffic characteristic and a slot to be transmitted voluntarily and determines a power of the preamble. A preamble transmitting unit(120) generates a preamble signal using the slot, the preamble signature and a power level and transmits the generated preamble. A transmitting signal selecting unit(130) selects a signal to be transmitted among the preamble and data generated in the preamble transmitting unit(120) using a receipt identifying signal transmitted from a base station(200). A terminal RF signal processing unit(140) converts the receipt identifying signal transmitted from the base station(200) into a base band signal. A receipt identifying signal receiving signal(150) receives the receipt identifying signal of the base band from the terminal RF signal processing unit(140) and identifies as to whether the transmitted preamble signature is received. A transmission determining unit(160) enables the transmission resource determining unit(110) according to the identified result and outputs a signal for being switched to the transmitting signal selecting unit(130). A terminal data transmitting unit(180) receives data transmitted to a terminal data processing unit(170), selects a code according to the preamble signature to perform a band diffusion.
    • 目的:提供码分多址连接方法的后向公共信道随机接入装置和方法,通过识别发送的前导码是否被接收并根据识别的结果发送数据或重传前同步码来提高网络效率。 构成:传输资源确定单元(110)选择与要传送的业务特性和时隙相对应的前导签名,并且确定前导码的功率。 前导码发送单元(120)使用该时隙,前导签名和功率电平来生成前同步信号,并发送所生成的前同步码。 发送信号选择单元(130)使用从基站(200)发送的接收识别信号,选择在前同步码发送单元(120)中生成的前同步码和数据之间要发送的信号。 终端RF信号处理单元(140)将从基站(200)发送的接收标识信号转换为基带信号。 收据识别信号接收信号(150)从终端RF信号处理单元(140)接收基带的接收识别信号,并且识别发送的前导签名是否被接收。 传输确定单元(160)根据所识别的结果启用传输资源确定单元(110),并输出切换到发送信号选择单元(130)的信号。 终端数据发送单元(180)接收发送到终端数据处理单元(170)的数据,根据前导签名选择代码进行频带扩散。