非合作定位中的WCDMA协议分析  

Analysis of WCDMA Protocol in Non-cooperative Location

作　　者：赵毅[1] 卓永宁[1] 刘伟辉[2] 

机构地区：[1]电子科技大学通信抗干扰技术国家级重点实验室,四川成都611731 [2]金鹏电子信息机器有限公司,广东广州510663

出　　处：《通信技术》2010年第9期92-94,共3页Communications Technology

基　　金：电子科技大学青年科技基金资助项目(No.L08010104JX0702)

摘　　要：非合作定位技术不依靠运营商网络,其定位所需的参数需要测量者自己获取。为了分析非合作定位应用在宽带码分多址(WCDMA)系统中的适应性,通过3GPP标准协议研究了在随机接入过程中携带有到达时间,到达时差,信号强度和身份识别等定位参数的载体,并且从中比较了各种定位参数提取的难易程度,比较的结果表明,到达时差相对于到达时间和信号强度可以较容易从物理随机接入信道的前缀码中提取。用户身份信息可从身份识别过程提取。Non-cooperation location does not depend on the service network,all the location parameters are extracted by the observers.In order to analyze adaptability of non-cooperative location in WCDMA,the carriers with the location parameters including the time of arrival,time difference of arrival,intensity of signal and identity code of user equipment are studied in the light of 3GPP WCDMA specifications,then the extraction difficulties of various location parameters are compared.The results show that the time difference of arrival could be more easily extracted from preamble in the physical random access channel than the time of arrival and the intensity of signal.The user-identity information could be extracted from the identity identification procedure.

关 键 词：宽带码分多址 3GPP标准协议 随机接入过程 

分 类 号：TN929.5[电子电信—通信与信息系统]