在GPRS和EDGE系统中,使用两种编码,GMSK和8PSK
GPRS是GMSK;编码方式:CS-1到-CS-4;
EDGE是8PSK;编码方式是MCS1~9
在系统中,格式如下
CHANNEL_CODING_COMMAND (参考3GPP44.018)
The CHANNEL_CODING_COMMAND field (2 bit field)indicates the coding scheme to be used for transmission, see3GPP
MCS(Modulation and coding Scheme)-参考资料 3GPP 44.060 12.10d
3GPP 44.060 12.10d EGPRS Modulation and coding Schemedescription
EGPRS modulation and coding scheme information element | |
bits |
|
0 0 0 0 | MCS-1 |
0 0 0 1 | MCS-2 |
0 0 1 0 | MCS-3 |
0 0 1 1 | MCS-4 |
0 1 0 0 | MCS-5 |
0 1 0 1 | MCS-6 |
0 1 1 0 | MCS-7 |
0 1 1 1 | MCS-8 |
1 0 0 0 | MCS-9 |
1 0 0 1 | MCS-5-7 |
1 0 1 0 | MCS-6-9 |
1 0 1 1 1 1 1 1 | reserved |
Table 12.10d.2: EGPRS MCS information element details(EGPRS2-A)
EGPRS modulation and coding scheme information element | |
bits |
|
0 0 0 0 | MCS-1 |
0 0 0 1 | MCS-2 |
0 0 1 0 | MCS-3 |
0 0 1 1 | MCS-4 |
0 1 0 0 | MCS-5 |
0 1 0 1 | MCS-6 |
0 1 1 0 | UAS-7 |
0 1 1 1 | UAS-8 |
1 0 0 0 | UAS-9 |
1 0 0 1 | UAS-10 |
1 0 1 0 | UAS-11 |
1 0 1 1 1 1 1 1 | reserved |
Table 12.10d.3: EGPRS MCS information element details(EGPRS2-B)
EGPRS modulation and coding scheme information element | |
bits |
|
0 0 0 0 | MCS-1 |
0 0 0 1 | MCS-2 |
0 0 1 0 | MCS-3 |
0 0 1 1 | MCS-4 |
0 1 0 0 | UBS-5 |
0 1 0 1 | UBS-6 |
0 1 1 0 | UBS-7 |
0 1 1 1 | UBS-8 |
1 0 0 0 | UBS-9 |
1 0 0 1 | UBS-10 |
1 0 1 0 | UBS-11 |
1 0 1 1 | UBS-12 |
1 1 0 0 1 1 1 1 | reserved |
如何在LOG中查看:CS和MCS参考:
http://blog.sina.com.cn/s/blog_746b60460102uy6p.html
EGPRS Level_EDGE版本:
http://blog.sina.com.cn/s/blog_746b60460102uy6l.html