| 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 EHICH channel, there is
one channel code whose spreed factor(SF) is 16, whose midamble is the same
as EHICH, but can not be
used, which causes the waste of channel code resources. Owning to semipersist
e
nt schedule in HSPA+, the shortage of signature sequence of EHICH channel code
becomes more and more serious. After the analysis of this problem, the configura
tion method of EHICH channel in pairs is presented, and restriction is introdu
ced
to guarantee that the data power of the two EHICH channels is the same. Wh
e
n a channel code with SF=16 carries an EHICH channel, another channel code
who
s
e Midamble Shift and father node are the same as the former channel code carri
es another EHICH, the partnership of EHICH 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 EHICH 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 |
《电讯技术》编辑部 