microsoft powerpoint - nokia_cs core planningv1 3(dec2005)
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7/27/2019 Microsoft PowerPoint - Nokia_CS Core Planningv1 3(Dec2005)
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MGW Capacity U3B
Maximum BHCA 900,000Max. # of Simultaneous Calls 18,500
# of TDM ports 37,800
Max. # of E1s 1,260
Max. # of ATM Ports 27,000
Max. # of IP Ports 10,000Max. # of TCUs 78
Max. # of ISU 10+1
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Cal l Case
T C U
Capaci ty
Iu - Iu 112Iu - Iu (T rFO, U 3 B ) 256
Iu - TDM 160
Iu - TDM (echo) 128
T D M - T D M 1 9 2
T D M - T D M (echo) 160
T D M (echo) - TD M (echo) 112
Iu 96Iu (T r FO, U 3 B ) 256
T D M 128
T D M (echo) 128
Iu 128
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Iu 128
T D M 1 9 2
T D M (echo) 96
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G.711/AMR G.711/AMR
G.711/AMR NbUP 4 G.711/AMR NbUP 4
NbUP 4 12 NbUP 4 12
12 8 12 8
8 20 8 20
20 8 20 8
38 38 9 9
82 90 53 61
Ethernet Ethernet PPP PPP
IP MPLS IP MPLS
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CS-Data CS-Data
CS-Data CS-DataRTP RTP
NbUP 4
RTP 12
UDP 8
IP 20
Ethernet 38
PPP 9
MPLS 8
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Codec Bit Rate(kb/s)Frame
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AMR 4.75 12 90 20 40.8
G.711(5ms) 64 40 86 5 201.6
G.711(20ms) 64 160 86 20 98.4CS-Data 64 40 86 5 201.6
Comfortable Noise 0.25 5 90 160 4.75
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MSS Capacity M13.2
Maximum BHCA 1,200,000SMS/BH 1,200,000
# of Sub per VLRU 120,000
# of VLRU (pair) 10
# of Megaco Context / SIGU(typical traffic model) 2,000
Max. # of Simultaneous Calls / MSS 41,500
Signalling processing capacity / SIGU or BSU (Kbps) 400# of BSU
# of SIGU43+1
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UDPIPv4 or IPv6
Ethernet
TCAP
SCCP
M3UA
SCTP
Protocol OverHeads Byte
TCAP 40SCCP 22
MTP 12
M3UA 24
SCTP 28
IPv4 20
IPv6 40Ethernet 38
UDP 8
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Number of H.248 transactions per call 8
Average H.248 message size in bytes 312.5
H.248 bytes per call without OH 2500
SCTP OH in bytes 28
IPv4 OH in bytes 20
Ethernet OH in bytes 38
Calculated Bandwidth w/o OH (Mbps) 6.435
Calculated Bandwidth w/t OH (Mbps) 8.206
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HLR Capacity M13
# of Subscriber 3,750,000
# of Telemetric Subscriber 1,250,000# of HLRU 10
# of Subscriber per HLRU 375,000
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Subs Distribution City1 City2 City3 Subtotal
3G Sub 500,000 50,000 100,000 650,000
2G Sub 1,000,000 400,000 600,000 2,000,000
Total Subs in Region1 2,650,000
Subs Distribution Region1 Region2 Region3 Subtotal
3G Sub 650,000 500,000 800,000 1,950,000
2G Sub 2,000,000 1,000,000 2,400,000 5,400,000
Subtotal 2,650,000 1,500,000 3,200,000 7,350,000
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Traffic model Voice
M-L (PSTN and Other Operator) 45%
L-M (PSTN and Other Operator) 45%M-M 10%
Call forwarding traffic 1%
L-M, M-M traffic Distribution
% of Inter Region Traffic 10%
% of Intra Region Inter City Traffic 20%
% of Intra Region Intra City Traffic 70%Call Mix Traffic
Erl/sub (2G voice) 0.015
BHCA/sub (2G voice) 1.00
MCHT(s)(2G voice) 54.0
Erl/sub (3G voice) 0.015
BHCA/sub (3G voice) 1.00
MCHT(s)(3G voice) 54.0
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Call model for VMS/SMSVMS listen 0.01%
VMS Forward 1.50%
Average SMS length in bytes 140
SMS-MO 0.45
SMS-MT 0.8
Capacity of Link and Trunk
Maximum Traffic per Channel (Erl) 0.80
Maximum C7 Signalling Link Load (Erl) 0.20
TCU resource utilization 0.98
GoS 0.10%
Type of the BackBone IP
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Traffic distribution of Exchange : City3 MGW
2G/3G Network MGW Other Networks
VMS listen 0.01%
50.00% (1) MO 40.90% Calls to PSTN 41.90%
9.09% 1.00%
50.00% (10) MT Calls from PSTN 43.41%42.41%
1.50%
VMS Forward
15.00% 15.00% Interswitch traffic
Other MGWs
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City1 City2 City3
# of required MSS (M13.2)
# of required SU(SIGU/BSU) per MSS
# of required MGW (U3B) 3 1 2
# of TCU per MGW 68 51 46
# of E1s per MGW (through NIWU) 0 402 159
# 2 Mbps TDM per MGW through IWS1 396 5 154# of ATM ports per MGW 2,687 814 890
# of IP ports per MGW 5,890 2,120 3,528
# of ISU per MGW 9 8 7
# of required HLR (M13)
# of required HLRU pairs per HLR
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MSS Dimensioning Criteria Required Capacity
# of BHCA 1,158,371
# of SMS 1,104,167
# of Megaco Context 26,369
# of Simultaneous Calls 17,579
# of Megaco Context / SIGU (CL=54s) 1,551
# of SIGU Required for traffic control 17
# of SIGU Required for signalling control w/o OH 27
# of BSU Required for signalling control w/o OH 4
# of SIGU Required 27
Required Bandwidth for Signallingin Mbps (w/o
Overhead)
in Mbps (w/t
Overhead)Total Bandwidth 11.93 23.69
MGW-MSS, Mc interface
(RANAP+BSSAP+MEGACO+ISUP) 9.24 17.12
MSS-MSS, Nc interface (BICC + MAP) 0.47 1.10
MSS-HLR Bandwidth 1.06 2.86
MSS-SMSC Bandwidth 0.48 0.90
MSS-IN Bandwidth 0.69 1.71
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% 3$>8E" --)>8E"1!
MGW Dimensioning Criteria Max Capacity# of TCU per MGW 68
# E1 per MGW (through NIWU) 0
# 2 Mbps TDM per MGW through IWS1 396
# ATM ports per MGW 2,687
# ATM traffic through NIS1 2,582
# ATM traffic through NIP1 0# of IP ports per MGW 5,890
# of ISU 8
BHCA 669,318
Simultaneous Calls 10,210
Required Bandwidth for Traffic In Mbps (w/t Overhead)
Required IP BB Bandwidth (Mbps) 278
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% 3>8E" --)>8E"1!
MGW Dimensioning Criteria Max Capacity
# of TCU per MGW 51
# E1 per MGW (through NIWU) 5
# 2 Mbps TDM per MGW through IWS1 402
# ATM ports per MGW 814
# ATM traffic through NIS1 750
# ATM traffic through NIP1 0
# of IP ports per MGW 2,120# of ISU 7
BHCA 516,477
Simultaneous Calls 7,903
Required Bandwidth for Traffic In Mbps (w/t Overhead)
Required IP BB Bandwidth (Mbps) 98
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MGW Dimensioning Criteria Max Capacity
# of TCU per MGW 46
# E1 per MGW (through NIWU) 159
# 2 Mbps TDM per MGW through IWS1 154
# ATM ports per MGW 890
# ATM traffic through NIS1 0
# ATM traffic through NIP1 823
# of IP ports per MGW 3,528
# of ISU 6
BHCA 451,818
Simultaneous Calls 6,926
Required Bandwidth for Traffic In Mbps (w/t Overhead)Required IP BB Bandwidth (Mbps) 165
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PhysicalMGW 1
vMGWgroup 1
vMGWgroup 2
vMGWgroup 3
vMGWgroup 4
CCSU 1/ SIGU 1
CCSU 2/ SIGU 2
CCSU 3/ SIGU 3
CCSU 4/
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ISU
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Network level resilience of MGW and MSS is based on N to M relationship between network elements.
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Architecture composing
separate MSC Server and
MGW with virtual MGW
concept provides
possibility to improve
resilience against physical
MGW failures as
RNC/BSC can be
connected to more than
one MGW
A (TDM based) interface
is always dedicated tosome virtual MGW while
Iu is not (ATM based).
Control plane relationship
is between BSC/RNC and
a single MSS
One physical MGW can be
divided up to 50 virtual
MGW. MSS can control up
to 100 (virtual) MGWs.
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MGW failure is handled with spare capacity in remaining MGW, no reconfiguration is required.
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MSS failure is handled by BSC and RNC re-homing type of actions in MSS. In MGW,resources under failing MSS are transferred under remaining MSS, no physical changes
are needed.
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Ongoing calls are lost in
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Level of service depends
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Reconfiguration includesconfiguration of BSCs/
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areas of lost MSS to
remaining MSS
In MGW the TDM
resources of the virtualMGW controlled by failing
MSS are moved to virtual
MGW of the remaining
MSS.
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In case of RNCit is also
possible to
utilize multiple
core networks
support in RNC
to speed upfail-over
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