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TD-HSPA+中E-HICH信道配置方法的改进
刘睿强
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(重庆电子工程职业学院，重庆 401331)

摘要:

在码道资源比较紧张的高速上行分组接入（HSUPA）系统中，由于采用E-HICH独立配置方法，导致与E-HICH 相同的Midamble的另外一条扩频因子为16的码道不能使用，从而造成信道码资源的浪费。在 HSPA+中，由于引入了半持续资源调度方法，使得相对紧张的E-HICH签名序列显得更加紧张。在对该问题进行了详细分析后，提出了E-HICH信道逐对配置方法，并引入约束关系保证配对的E- HICH数据域功率相同。当一个扩频因子为16的信道码承载一个E-HICH时，用与该信道码具有相同Mid amble Shift和相同父节点的另一个信道码承载另一个E-HICH，这种E-HICH配对的形式很好地解决了另外一条码道不能使用的问题。仿真结果表明，该方法不但能够解决HSPA +中E-HICH信道码资源紧张的问题，而且提高了码道利用率和终端的检测性能。

关键词: TD-SCDMA 增强高速分组数据传输半持续调度终端确认信息联合检测

DOI：

基金项目:

Improvement on the E-HICH Channel Configuration in TD-HSPA+ System

LIU Rui-qiang

(Chongqing College of Electronic Engineering,Chongqing 401331,China)

Abstract:

Currently, channel code resource is in low utilization in HSUPA(High Speed Uplin k Access). Due to the use of the individual configuration method of EHICH channel, there is one channel code whose spreed factor(SF) is 16, whose midamble is the same as EHICH, but can not be used, which causes the waste of channel code resources. Owning to semipersist e nt schedule in HSPA+, the shortage of signature sequence of EHICH channel code becomes more and more serious. After the analysis of this problem, the configura tion method of EHICH channel in pairs is presented, and restriction is introdu ced to guarantee that the data power of the two EHICH channels is the same. Wh e n a channel code with SF=16 carries an EHICH channel, another channel code who s e Midamble Shift and father node are the same as the former channel code carri es another EHICH, the partnership of EHICH channels can make full use of ano th er channel. The simulation result shows that the method can n ot only solve the shortage of EHICH channel resources, but also increase the u t ilization rate of channel code and improve the detecting performance of user equ ipment.

Key words: HSPA+ semi persistent schedule ACK/NACK joint detection