TD的HSDPA一定要用TC 1/3编码吗？

illidan

TS 25.222

4.5.3 Channel coding for HS-DSCH
Channel coding for the HS-DSCH transport channel shall be done with the general method described in 4.2.3 above with the following specific parameters.
There will be a maximum of one transport block, i = 1. The rate 1/3 turbo coding shall be used.

这个是说，HS-DSCH 要强制使用1/3 turbo码吗？