4 The block structures
3GPP45.001General descriptionGSM/EDGE Physical layer on the radio pathRelease 17TS
The different block structures are described in more detail in 3GPP TS 45.003. A summarised description appears in table 1, in terms of net bit rate, length and recurrence of blocks.
Table 1: Channel block structures
|
Type of channel |
net bit rate (kbit/s) |
block length (bits) |
block recurrence (ms) |
|---|---|---|---|
|
full rate speech TCH1 |
13,0 |
182 + 78 |
20 |
|
enhanced full rate speech TCH1 |
12,2 |
170 + 74 |
20 |
|
half rate speech TCH2 |
5,6 |
95 + 17 |
20 |
|
Adaptive full rate speech TCH (12,2 kbit/s) |
12,2 |
244 |
20 |
|
Adaptive full rate speech TCH (10,2 kbit/s) |
10,2 |
204 |
20 |
|
Adaptive full rate speech TCH (7,95 kbit/s) |
7,95 |
159 |
20 |
|
Adaptive full rate speech TCH (7,4 kbit/s) |
7,4 |
148 |
20 |
|
Adaptive full rate speech TCH (6,7 kbit/s) |
6,7 |
134 |
20 |
|
Adaptive full rate speech TCH (5,9 kbit/s) |
5,9 |
118 |
20 |
|
Adaptive full rate speech TCH (5,15 kbit/s) |
5,15 |
103 |
20 |
|
Adaptive full rate speech TCH (4,75 kbit/s) |
4,75 |
95 |
20 |
|
Adaptive half rate speech TCH (7,95 kbit/s)8 |
7,95 |
123 + 36 |
20 |
|
Adaptive half rate speech TCH (7,4 kbit/s)8 |
7,4 |
120 + 28 |
20 |
|
Adaptive half rate speech TCH (6,7 kbit/s)8 |
6,7 |
110 + 24 |
20 |
|
Adaptive half rate speech TCH (5,9 kbit/s)8 |
5,9 |
102 + 16 |
20 |
|
Adaptive half rate speech TCH (5,15 kbit/s)8 |
5,15 |
91 + 12 |
20 |
|
Adaptive half rate speech TCH (4,75 kbit/s)8 |
4,75 |
83 + 12 |
20 |
|
Adaptive half rate 8-PSK speech TCH |
12,2 |
244 |
20 |
|
Adaptive half rate 8-PSK speech TCH |
10,2 |
204 |
20 |
|
Adaptive half rate 8-PSK speech TCH |
7,95 |
159 |
20 |
|
Adaptive half rate 8-PSK speech TCH |
7,4 |
148 |
20 |
|
Adaptive half rate 8-PSK speech TCH |
6,7 |
134 |
20 |
|
Adaptive half rate 8-PSK speech TCH |
5,9 |
118 |
20 |
|
Adaptive half rate 8-PSK speech TCH |
5,15 |
103 |
20 |
|
Adaptive half rate 8-PSK speech TCH |
4,75 |
95 |
20 |
|
Wideband Adaptive full rate speech TCH (12,65 kbit/s) |
12,65 |
253 |
20 |
|
Wideband Adaptive full rate speech TCH (8,85 kbit/s) |
8,85 |
177 |
20 |
|
Wideband Adaptive full rate speech TCH (6,60 kbit/s) |
6,60 |
132 |
20 |
|
Wideband Adaptive full rate 8-PSK speech TCH (23,85 kbit/s) |
23,85 |
477 |
20 |
|
Wideband Adaptive full rate 8-PSK speech TCH (15,85 kbit/s) |
15,85 |
317 |
20 |
|
Wideband Adaptive full rate 8-PSK speech TCH (12,65 kbit/s) |
12,65 |
253 |
20 |
|
Wideband Adaptive full rate 8-PSK speech TCH (8,85 kbit/s) |
8,85 |
177 |
20 |
|
Wideband Adaptive full rate 8-PSK speech TCH (6,6 kbit/s) |
6,60 |
132 |
20 |
|
(continued) |
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|
Wideband Adaptive half rate 8-PSK speech TCH (12,65 kbit/s) |
12,65 |
253 |
20 |
|
Wideband Adaptive half rate 8-PSK speech TCH (8,85 kbit/s) |
8,85 |
177 |
20 |
|
Wideband Adaptive half rate 8-PSK speech TCH (6,6 kbit/s) |
6,60 |
132 |
20 |
|
data E-TCH (43,2 kbit/s) 3 |
43,5 |
870 |
20 |
|
data E-TCH (32,0 kbit/s) 3 |
32,0 |
640 |
20 |
|
data E-TCH (28,8 kbit/s)3 |
29,0 |
580 |
20 |
|
data TCH (14,4 kbit/s) 3 |
14,5 |
290 |
20 |
|
data TCH (9,6 kbit/s)3 |
12,0 |
60 |
5 |
|
data TCH (4,8 kbit/s)3 |
6,0 |
60 |
10 |
|
data TCH (£ 2,4 kbit/s)3 |
3,6 |
36 |
10 |
|
PDTCH/F (CS-1) |
9,05 |
181 |
– |
|
PDTCH/F (CS-2) |
13,4 |
268 |
– |
|
PDTCH/F (CS-3) |
15,6 |
312 |
– |
|
PDTCH/F (CS-4) |
21,4 |
428 |
– |
|
PDTCH/H (CS-1) |
4,525 |
181 |
– |
|
PDTCH/H (CS-2) |
6,7 |
268 |
– |
|
PDTCH/H (CS-3) |
7,8 |
312 |
– |
|
PDTCH/H (CS-4) |
10,7 |
428 |
– |
|
EC-PDTCH/F (MCS-1/16)10,18 |
2,65 |
212 |
– |
|
EC-PDTCH/F (MCS-1/8)10,17 |
5,3 |
212 |
– |
|
EC-PDTCH/F (MCS-1/4)10,16 |
10,6 |
212 |
– |
|
EC-PDTCH/F (MCS-1’/48)10,24,25 |
0,88 |
212 |
– |
|
EC-PDTCH/2TS/F (MCS-1’/48)10,24,29 |
0,44 |
212 |
|
|
EC-PDTCH/2TS/F (MCS-1/16)10,28 |
1,325 |
212 |
– |
|
EC-PDTCH/2TS/F (MCS-1/8)10,27 |
2,65 |
212 |
– |
|
EC-PDTCH/2TS/F (MCS-1/4)10,26 |
5,3 |
212 |
– |
|
(EC-)PDTCH/F (MCS-1)10,15 |
10,6 (21,2)11 |
212 |
– |
|
(EC-)PDTCH/F (MCS-2)10,15 |
13,0 (26,0)11 |
260 |
– |
|
(EC-)PDTCH/F (MCS-3)10,15 |
16,6 (33,2)11 |
332 |
– |
|
(EC-)PDTCH/F (MCS-4)10,15 |
19,4 (38,8)11 |
388 |
– |
|
(EC-)PDTCH/F (MCS-5)10,15 |
24,05 (48,1)11 |
481 |
– |
|
(EC-)PDTCH/F (MCS-6)10,15 |
31,25 (62,5)11 |
625 |
– |
|
(EC-)PDTCH/F (MCS-7)10,15 |
47,45 (94,9)11 |
949 |
– |
|
(EC-)PDTCH/F (MCS-8)10,15 |
57,05 (114,1)11 |
1141 |
– |
|
(EC-)PDTCH/F (MCS-9)10,15 |
61,85 (123,7)11 |
1237 |
– |
|
PDTCH/F (DAS-5)13 |
23,75 (47,50)11 |
475 |
– |
|
PDTCH/F (DAS-6)13 |
28,55 (57,10)11 |
571 |
– |
|
PDTCH/F (DAS-7)13 |
34,15 (68,30)11 |
683 |
– |
|
PDTCH/F (DAS-8)13 |
46,90 (93,80)11 |
938 |
– |
|
PDTCH/F (DAS-9)13 |
56,50 (113,00)11 |
1130 |
– |
|
PDTCH/F (DAS-10)13 |
67,60 (135,20)11 |
1352 |
– |
|
PDTCH/F (DAS-11)13 |
84,40 (168,80)11 |
1688 |
– |
|
PDTCH/F (DAS-12)13 |
101,20 (202,40)11 |
2024 |
– |
|
PDTCH/F (DBS-5)13 |
23,80 (47,60)11 |
476 |
– |
|
PDTCH/F (DBS-6)13 |
31,00 (62,00)11 |
620 |
– |
|
PDTCH/F (DBS-7)13 |
46,85 (93,70)11 |
937 |
– |
|
PDTCH/F (DBS-8)13 |
61,25 (122,50)11 |
1225 |
– |
|
PDTCH/F (DBS-9)13 |
69,95 (139,90)11 |
1399 |
– |
|
PDTCH/F (DBS-10)13 |
91,559 (183,10)11 |
1831 |
– |
|
PDTCH/F (DBS-11)13 |
112,30 (224,60)11 |
2246 |
– |
|
PDTCH/F (DBS-12)13 |
121,90 (243,80)11 |
2438 |
– |
|
PDTCH/F (UAS-7)14 |
47,65 (95,30)11 |
953 |
– |
|
PDTCH/F (UAS-8)14 |
57,25 (114,50)11 |
1145 |
– |
|
PDTCH/F (UAS-9)14 |
62,05 (124,10)11 |
1241 |
– |
|
PDTCH/F (UAS-10)14 |
71,00 (142,00)11 |
1420 |
– |
|
PDTCH/F (UAS-11)14 |
80,60 (161,20)11 |
1612 |
– |
|
PDTCH/F (UBS-5)14 |
24,20 (48,40)11 |
484 |
– |
|
PDTCH/F (UBS-6)14 |
31,40 (62,80)11 |
628 |
– |
|
PDTCH/F (UBS-7)14 |
47,55 (95,10)11 |
951 |
– |
|
PDTCH/F (UBS-8)14 |
61,95 (123,90)11 |
1239 |
– |
|
PDTCH/F (UBS-9)14 |
70,95 (141,90)11 |
1419 |
– |
|
PDTCH/F (UBS-10)14 |
92,55 (185,10)11 |
1851 |
– |
|
PDTCH/F (UBS-11)14 |
113,60 (227,20)11 |
2272 |
– |
|
PDTCH/F (UBS-12)14 |
123,20 (246,40)11 |
2464 |
– |
|
PDTCH/H (MCS-1)10 |
5,3 |
212 |
– |
|
PDTCH/H (MCS-2)10 |
6,5 |
260 |
– |
|
PDTCH/H (MCS-3)10 |
8,3 |
332 |
– |
|
PDTCH/H (MCS-4)10 |
9,7 |
388 |
– |
|
PDTCH/H (MCS-5)10 |
12,025 |
481 |
– |
|
PDTCH/H (MCS-6)10 |
15,625 |
625 |
– |
|
PDTCH/H (MCS-7)10 |
23,725 |
949 |
– |
|
PDTCH/H (MCS-8)10 |
28,525 |
1141 |
– |
|
PDTCH/H (MCS-9)10 |
30,925 |
1237 |
– |
|
full rate FACCH (FACCH/F) |
9,2 |
184 |
20 |
|
half rate FACCH (FACCH/H) enhanced circuit switched full rate FACCH (E-FACCH/F) |
4,6 9,2 |
184 184 |
40 20 |
|
full rate octal FACCH (O-FACCH/F) |
9,2 |
184 |
20 |
|
half rate octal FACCH (O-FACCH/H) |
4,6 |
184 |
40 |
|
SDCCH |
598/765 ( 0,782) |
184 |
3 060/13 (235) |
|
SACCH (with TCH)4 |
115/300 ( 0,383) |
168 + 16 |
480 |
|
SACCH (with SDCCH)4 |
299/765 ( 0,391) |
168 + 16 |
6 120/13 ( 471) |
|
PACCH/F7 |
– |
181 (204)12 |
– |
|
EC-PACCH/D15,16,17,18,26,27,28,19 |
– |
80 |
– |
|
EC-PACCH/U15,16,17,18,26,27,28,20 |
– |
64 |
– |
|
EC-PACCH/U/4825,29,30 |
– |
56 |
– |
|
PACCH/H7 |
– |
181 |
|
|
BCCH |
598/765 ( 0,782) |
184 |
3 060/13 ( 235) |
|
EC-BCCH |
598/ (8*765) ( 0,098) |
184 |
8*3 060/13 (1 883) |
|
PBCCH6 |
s*181/120 (1,508) |
181 |
120 |
|
AGCH5 |
n*598/765 ( 0,782) |
184 |
3 060/13 ( 235) |
|
EC-AGCH, CC1 |
18*286/765 (6,729)21 25*286/765 (9,346)22 |
88 |
3 060/13 ( 235) |
|
EC-AGCH, CC2 |
4*286/(2*765) (0,748)21 6*286/(2*765) (1,122)22 |
88 |
2*3 060/13 ( 471) |
|
EC-AGCH, CC3 |
2*286/(2*765) ( 0,374)21 3*286/(2*765) ( 0,561)22 |
88 |
2*3 060/13 ( 471) |
|
EC-AGCH, CC4 |
2*286/(4*765) (0,187)21 3*286/(4*765) ( 0,280)22 |
88 |
4*3 060/13 ( 942) |
|
PAGCH7 |
181 |
||
|
NCH5 |
m*598/765 ( 0,782) |
184 |
3 060/13 ( 235) |
|
PCH5 |
p*598/765 ( 0,782) |
184 |
3 060/13 ( 235) |
|
EC-PCH, CC1 |
16*88*650/153 ( 5,982) |
88 |
3 060/13 ( 235) |
|
EC-PCH, CC2 |
4*88*650/(2*153) ( 0,748) |
88 |
2*3 060/13 ( 471) |
|
EC-PCH, CC3 |
2*88*650/(2*153) (0,374) |
88 |
2*3 060/13 ( 471) |
|
EC-PCH, CC4 |
2*88*650/(4*153) (0,187) |
88 |
4*3 060/13 ( 942) |
|
EC-PICH, CC331 |
2*88*650/(2*153) (0,374) |
88 |
2*3 060/13 ( 471) |
|
EC-PICH, CC432 |
2*88*650/(4*153) (0,187) |
88 |
4*3 060/13 ( 942) |
|
PPCH7 |
181 |
||
|
RACH5 |
r*26/765 ( 0,034) |
8 |
3 060/13 ( 235) |
|
RACH (30 bit Extended Access Burst)23 |
r*13/102( 0,127) |
30 |
3 060/13 ( 235) |
|
PRACH (8 bit Access Burst)7 |
r*26/765 ( 0,034) |
8 |
|
|
EC-RACH, 1 TS, CC1 (11 bit Access Burst) |
51*11*650/153 ( 2,383) |
11 |
3 060/13 ( 235) |
|
EC-RACH, 1 TS, CC2 (11 bit Access Burst) |
12*11*650/153 ( 0,561) |
11 |
3 060/13 ( 235) |
|
EC-RACH, 1 TS, CC3 (11 bit Access Burst) |
3*11*650/153 ( 0,140) |
11 |
3 060/13 ( 235) |
|
EC-RACH, 1 TS, CC4 (11 bit Access Burst) |
2*11*650/(2*153) ( 0,047) |
11 |
2*3 060/13 ( 471) |
|
EC-RACH, 2 TS, CC2 (11 bit Access Burst) |
25*11*650/153 ( 1,168) |
11 |
3 060/13 ( 235) |
|
EC-RACH, 2 TS, CC3 (11 bit Access Burst) |
6*11*650/153 ( 0,280) |
11 |
3 060/13 ( 235) |
|
EC-RACH, 2 TS, CC4 (11 bit Access Burst) |
4*11*650/(2*153) ( 0,093) |
11 |
2*3 060/13 ( 471) |
|
EC-RACH, 2 TS, CC5 (11 bit ESAB and 11 bit EDAB) |
2*11*650/(3*153) ( 0,031) |
11 |
3*3 060/13 ( 706) |
|
EC-RACH (30 bit Extended Access Burst)23 |
51*30*650/153 (=6,5) |
30 |
3 060/13 ( 235) |
|
PRACH (11 bit Access Burst)7 |
r*143/3060 ( 0,047) |
11 |
|
|
MPRACH (8 bit Access Burst)7 |
r*26/765 ( 0,034) |
8 |
|
|
MPRACH (11 bit Access Burst)7 |
r*143/3060 ( 0,047) |
11 |
|
|
CBCH |
598/765 ( 0,782) |
184 |
3 060/13 ( 235) |
|
CTSBCH-SB |
25/240 ( 0,104) |
25 |
240 |
|
CTSPCH |
184/240 ( 0,767) |
184 |
240 |
|
CTSARCH |
14*25/240 ( 0,104) |
25 |
240 |
|
CTSAGCH |
2*184/240 ( 0,767) |
184 |
240 |
|
NOTE 1: For full rate speech, the block is divided into two classes according to the importance of the bits (182 bits for class I and 78 bits for class II). For enhanced full rate speech, the block is divided into two classes according to the importance of the bits (170 bits for class I and 74 bits for class II). |
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NOTE 2: For half rate speech, the block is divided into two classes according to the importance of the bits (95 bits for class I and 17 bits for class II). |
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NOTE 3: For data services, the net bit rate is the adaptation rate as defined in 3GPP TS 44.021. |
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NOTE 4: On SACCH, 16 bits are reserved for control information on layer 1, and 168 bits are used for higher layers. |
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NOTE 5: CCCH channels are common to all users of a cell; the total number of blocks (m, n, p, r) per recurrence period is adjustable on a cell by cell basis and depends upon the parameters (BS_CC_CHANS, BS_BCCH_SDCCH_COMB, BS_AG_BLKS_RES and NCP) broadcast on the BCCH and specified in 3GPP TS 45.002 and 3GPP TS 44.018. |
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NOTE 6: The total number of PBCCH blocks (s) is adjustable on a cell by cell basis and depends upon the parameter BS_PBCCH_BLKS broadcast on the first PBCCH block and specified in 3GPP TS 45.002 and 3GPP TS 44.018. |
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NOTE 7: The net bit rate for these channels in a cell can change dynamically and depends on how PDCH are configured in a cell, and upon the parameters BS_PBCCH_BLKS, BS_PAG_BLKS_RES and BS_PRACH_BLKS broadcast on the PBCCH and specified in 3GPP TS 45.002 and 3GPP TS 44.018, as well as upon how certain blocks on the PDCH are used (indicated by the message type). |
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NOTE 8: For adaptive half rate speech, the blocks are divided into two classes according to the importance of the bits (the first number in the block length corresponds to the class I bits, the second number corresponds to the class II bits). |
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NOTE 9: CTSBCH, CTSARCH, CTSPCH and CTSAGCH are only used in CTS. |
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NOTE 10: For EGPRS PDTCH and EC-PDTCH, the block length in bits excludes the USF bits (downlink traffic) and all the error-check bits, but includes the tail bits. For transmission using FANR, they also exclude the PAN bits. For Turbo coded coding schemes (DAS-5 to DAS-12 and DBS-5 to DBS-12) the tail bits are not included in this calculation. |
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NOTE 11: The value outside the bracket applies for transmission using BTTI configuration, whereas the value in bracket refers to the case of transmission using RTTI configuration. |
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NOTE 12: The value in bracket applies to TBFs using FANR (see 3GPP TS 44.060), when transmission of the PACCH uses MCS-0. |
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NOTE 13: These channels are available only for the EGPRS2 downlink. |
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NOTE 14: These channels are available only for the EGPRS2 uplink. NOTE 15: Applies to EC operation for CC1. NOTE 16: Applies to EC operation for CC2 using 4 consecutive PDCHs. NOTE 17: Applies to EC operation for CC3 using 4 consecutive PDCHs. NOTE 18: Applies to EC operation for CC4 using 4 consecutive PDCHs. NOTE 19: Applies to following EC-PACCH/D configurations using 4 or 2 consecutive PDCHs, i.e. EC-PACCH/D/1, EC-PACCH/D/4, EC-PACCH/D/8, EC-PACCH/D/16, EC-PACCH/D/2TS/4, EC-PACCH/D/2TS/8, EC-PACCH/D/2TS/16 NOTE 20: Applies to following EC-PACCH/U configurations using 4 or 2 consecutive PDCHs, i.e. EC-PACCH/U/1, EC-PACCH/U/4, EC-PACCH/U/8, EC-PACCH/U/16, EC-PACCH/U/2TS/4, EC-PACCH/U/2TS/8, EC-PACCH/U/2TS/16 NOTE 21: Applies for an EC-CCCH mapped on timeslot 1. NOTE 22: Applies for an EC-CCCH mapped on timeslot 3, 5 or 7. NOTE 23: Applies for Multilateration Timing Advance using the Extended Access Burst method. NOTE 24: Uplink EC-PDTCH with 48 blind physical layer transmissions uses modified MCS-1 coding scheme MCS-1′, see 3GPP TS 45.003. NOTE 25: Applies to EC operation for CC5 using 4 consecutive PDCHs. NOTE 26: Applies to EC operation for CC2 using 2 consecutive PDCHs. NOTE 27: Applies to EC operation for CC3 using 2 consecutive PDCHs. NOTE 28: Applies to EC operation for CC4 using 2 consecutive PDCHs. NOTE 29: Applies to EC operation for CC5 using 2 consecutive PDCHs. NOTE 30: Applies to following EC-PACCH/U configurations using 4 or 2 consecutive PDCHs, i.e. EC-PACCH/U/48 and EC-PACCH/U/2TS/48. NOTE 31: EC-PICH, CC3 maps a 4 bit message type and a 2 bit indication to a block of 88 bits to be encoded using EC-CCCH/D coding scheme (see 3GPP TS 44.018). NOTE 32: EC-PICH, CC4 maps a 4 bit message type and a 1 bit indication to a block of 88 bits to be encoded using EC-CCCH/D coding scheme (see 3GPP TS 44.018). |
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