异构网络协同OTDOA定位方案研究  

Research of OTDOA Co-location Scheme Based on Heterogeneous Network

作　　者：高燕[1] 

机构地区：[1]榆林学院信息工程学院,陕西榆林719000

出　　处：《控制工程》2015年第2期347-351,共5页Control Engineering of China

基　　金：陕西省教育厅科研项目(14JK1864)

摘　　要：针对单一网络下的UE定位已经不能满足用户的定位需求的问题,提出了一种在LTE、WCDMA以及TD-SCDMA多基站共存的异构网络中一种OTDOA定位方案。本方案先对定位坐标进行残差加权重计算,然后采用综合了Chan氏算法和Taylor级数算法的改进定位算法计算位置,并在理想的信道环境和典型的实际信道模型下进行了异构网络下的定位仿真。在LTE网络信号不稳定的情况下,或者在基站数目较少的情况下,仍然可以进行定位操作。仿真结果表明,使用不同网络的基站参与定位,提高了定位成功的可能性。在非视距和多径环境下,本方案运算量较小,实现相对简单,且精度较高,尤其是算法改进后定位误差可减小一倍以上,提高了定位结果的可靠性。In this paper a solution of OTDOA co-location scheme is proposed under heterogeneous network of multi-base station including ofLTE, WCDMA and TD-SCDMA. Firstly, residual weighting algorithm is used in location coordinate. Then, combined with classic Chan＇s algorithm and Taylor series algorithm, improved location algorithm is used to calculate the location. Under heterogeneous network, the location simulation is executed in a model with ideal channel environment and typical practical channel. In the case of unstable LTE network signal or small number of base stations, location also could be executed. The simulation results show that using different network base stations, possibility of successful locating could be improved. Under the NLOS and multipath environment, the solution is characterized by light computational load, simple implementation, and higher accuracy, with less than half positioning errors after the algorithm is improved. The reliability of location results is also improved.

关 键 词：移动通信 异构网络 OTDOA 协同定位 

分 类 号：TN914.53[电子电信—通信与信息系统]