The present invention relates to a method for estimating multiple round-trip delays attached to a cellular terminal. For the estimation of exists between the base station and the terminal are included in the method comprises the following steps of the scheduled round-trip propagation delay range of the round-trip delay in starting downlink command signal from the base station (30) will be sent to the terminal; after the terminal receives the command signal at the starting end, on the uplink signal sent to the terminal from the signature the base station at the base station in the reception slot; signature (28) receiving the signature signal (34, 38, 42); at the base station for receiving the signal of the signature is processed to provide round-trip delay information. The processing step includes a cyclic correlation step performed by using a unique reference sequence (48) within a fixed correlation time window (54).
【技术实现步骤摘要】
【技术保护点】
用于在通信系统中将签名信号(118,122,126)从多个终端(4,94,96)发送至基站(6)的方法,所述通信系统包括使用多个签名序列(48,152,154)与所述基站进行通信的所述多个终端,所述签名信号(118,122,126)能够被用于在所述基站处估计传播往返延迟,所述传播往返延迟依赖于所述基站与多个终端之间的距离,在每个终端处执行的所述方法包括下列步骤:在终端处生成签名信号,从终端发送签名信号以便由所述基站(6)接收签名信号,其特征在于,所述多个签名序列(48,152,154)具有以下相互关系,即在所述多个签名序列中的一个被选择作为基准序列(48)的情况下,其他签名序列包括从所述基准序列(48)获得的序列。
【技术特征摘要】
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【专利技术属性】
技术研发人员:L·布鲁尼尔,B·杰乔克斯,
申请(专利权)人:三菱电机株式会社,
类型:发明
国别省市:JP
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