Wcdma for umts radio access for third genergation mobile communacations phần 2 pdf
Wcdma for umts radio access for third genergation mobile communacations phần 2 pdf
... in
Figure 2. 14. Example streaming terminals
Figure 2. 15. Example content download
26 WCDMA for UMTS
4
Background and Standardisation
of WCDMA
Antti Toskala
4.1 Introduction
In the first phase of third ... processing
gain for lower user data bit rates than for high bit rates. In particular, for user data bit rates of
2 Mbps, the processing gain is less than 2 (¼3.84 Mcp...
Wcdma for umts radio access for third genergation mobile communacations phần 5 pdf
... % 84 .2 Erl 4 %
12. 2 60.5 50.1 Erl 83 % 52. 8 Erl 5 %
16 39.0 30.1 Erl 77 % 32. 3 Erl 7 %
32 19.7 12. 9 Erl 65 % 14.4 Erl 12 %
64 12. 5 7.0 Erl 56 % 8 .2 Erl 17 %
144 6.4 2. 5 Erl 39 % 3 .2 Erl 28 %
0%
10%
20 %
30%
Soft ... system
Figure 7 .22 . Inter-system handover procedure from UTRAN to GSM
Figure 7 .23 . Inter-system handover procedure from GSM to UTRAN
178 WCDMA for UMTS...
Wcdma for umts radio access for third genergation mobile communacations phần 10 ppsx
... kbps 12. 2 kbps 384 kbps 12. 2 kbps
Propagation channel M data speech data speech
Case 1 v ¼ 3 km/h 1 26 % 26 % 2. 1 dB 1.6 dB
2 30 % 30 % 2. 3 dB 1.8 dB
4 31 % 31 % 2. 3 dB 2. 1 dB
Case 3 v ¼ 120 km/h ... dB 2. 1 dB
Case 3 v ¼ 120 km/h 1 35 % 35 % 2. 5 dB 2. 2 dB
2 36 % 36 % 2. 5 dB 2. 1 dB
4 30 % 30 % 2. 3 dB 1.9 dB
0 5 10 15 20 25 30 35
−5
0
5
10
15
20
1 ant
2 ant
4 a...
Wcdma for umts radio access for third genergation mobile communacations phần 3 doc
... and fixed data rate for the UTRA broadcast channel.
6 .2. 2 .2 Forward Access Channel
The Forward Access Channel (FACH) is a downlink transport channel that carries control
information to terminals ... System (UMTS) , Requirements for the UMTS Terrestrial
Radio Access System (UTRA), ETSI Technical Report, UMTS 21 .01 version 3.0.1, November
1997.
[6] Universal Mobile Teleco...
Wcdma for umts radio access for third genergation mobile communacations phần 4 potx
... with
1
2
-rate
coding (approx.)
5 12 7.5 15 3–6 1–3 kbps
25 6 15 30 12 24 6– 12 kbps
128 30 60 42 51 20 24 kbps
64 60 120 90 45 kbps
32 120 24 0 21 0 105 kbps
16 24 0 480 4 32 215 kbps
8 480 960 9 12 456 ... 480 960 9 12 456 kbps
4 960 1 920 18 72 936 kbps
4, with 3 parallel codes 28 80 5760 5616 2. 8 Mbps
122 WCDMA for UMTS
encoding and decoding. This is needed in an...
Wcdma for umts radio access for third genergation mobile communacations phần 6 doc
... 0.34
cell 2 208.70 21 6.00 0 .26 0.50
cell 3 23 1 .20 1 92. 00 0 .24 0.35
cell 4 721 .60 760.00 0.43 0.17
cell 5 1508.80 11 32. 52 0.75 0 .22
cell 6 7 62. 67 800.00 0.53 0.30
MEAN (all cells) 519 .20 508.85 ... Sites’,
presented at VTC’ 02 Fall, Vancouver, Canada, 24 29 September 20 02.
[14] 3GPP Technical Report 25 .885 UMTS1 800/1900 Work Item Technical Report’.
Radio Network P...
Wcdma for umts radio access for third genergation mobile communacations phần 7 pps
... in
Figure 10 .28 .
384
Target load level
384384
25 6
384
25 6
25 6
25 6
25 6
128
Time
1
= 1 capacity request in the queue, 384 kbps allocated
1 2 3 4 5
2
= 2
nd capacity request arrives, room for 2nd 384 ... request arrives, no room for 384 kbps, but 25 6 kbps
allocated and one existing connection downgraded to 25 6 kbps
25 6
25 6
128
128
128
4
= 4
th capacity reque...
Wcdma for umts radio access for third genergation mobile communacations phần 8 potx
... DPCCH
¼ 10 Á log
10
12: 2 þ 12: 2 Á 10
À3dB
10
AMR
À
bit rate½kbpsþ 12: 2 Á 10
À3dB
10
!
ð 12: 3Þ
where the power difference between DPCCH and DPDCH is assumed to be À3.0 dB for
12. 2 kbps AMR speech. ... terminal
Figure 12. 6. Real time and non-real time bit rates as a function of link budget improvements
3 52 WCDMA for UMTS
are shown in Figure 12. 6. The non-real time bit rat...
Wcdma for umts radio access for third genergation mobile communacations phần 9 potx
... in
24
22
20
−18
−16
−14
− 12
−10
−8
I
c
/
l
or
[dB]
−10 −50 5101 520 25
G
=
I
or
/
N
0
(dB)
3 km/h
50 km/h
120 km/h
Figure 12. 16. Effect of mobile speed in the ITU Pedestrian A channel
3 62 WCDMA ... 12. 20 for voice and in
Table 12. 21 for data.
The E
b
=N
0
values are summarised in Figure 12. 42 for uplink and in Figure 12. 43 for
downlink. We can note that the up...
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