卫星终端小区重选策略设计及优化  

Design and Optimization of Cell Reselection Strategy in Satellite Terminal

作　　者：汪虹宇 莫志锋[2] 张玉成[2] WANG Hongyu;MO Zhifeng;ZHANG Yucheng(College of Communications and Information Engineering,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Wireless Communication Technology Research Center,Institute of Computing Technology,Chinese Academy of Sciences,Beijing 100190,China)

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065 [2]中国科学院计算技术研究所无线通信技术研究中心,北京100190

出　　处：《计算机工程与应用》2020年第18期247-253,共7页Computer Engineering and Applications

基　　金：北京市自然科学基金(No.L172049);中国科学院弘光专项(No.KFJ-HGZX-002)。

摘　　要：小区重选能够保证为卫星终端提供不间断的服务。为了能更节能、更高效地完成小区重选,分别对卫星终端正常模式及低功耗模式下的小区重选进行了设计。小区重选过程中,为了使终端在切换频点后能够正常接收信道数据,分别提出了频率校正信道(Frequency Correction Channel,FCCH)同步和帧及时隙同步两种方法,并在低功耗场景中对这两种同步方法进行优化。经过实测功耗数据,优化后的方法实现过程功耗更低、效率更高;经过JY5000软件仿真后,设计的小区重选方案满足协议一致性。Cell reselection can guarantee to provide satellite terminals with continuous service.In order to complete cell reselection more energy-saving and more efficient,the cell reselection process of satellite terminals in normal and low power consumption modes is designed respectively.In the process of cell reselection,in order to enable the terminal to receive channel data normally after switching frequency point,Frequency Correction Channel(FCCH)synchronization and frame and time slot synchronization methods are proposed,this two synchronization methods are optimized in the low power consumption mode.After measured power consumption data,the optimized method realizes lower power consumption;after emulated by the JY5000 software,the cell reselection scheme satisfies the protocol consistency.

关 键 词：小区重选 低功耗 频率校正信道(FCCH)同步 帧及时隙同步 

分 类 号：TN929.5[电子电信—通信与信息系统]