iub over ip - reva
DESCRIPTION
Iub over IPTRANSCRIPT
1Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Iub over IPIub over IP
TIM -
Telecom ItaliaAlessandro Guerrieri
RAN Transport WorkshopEricsson CME2G3G User Group
Kista, June 10-11 2008
2Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
AgendaAgenda
••
Iub in TIM Utran todayIub in TIM Utran today
••
Iub over IP in P6 GA: Iub over IP in P6 GA: Functional highlightsFunctional highlights
••
Architecture and Architecture and implementationimplementation
••
Lab tests (ongoing)Lab tests (ongoing)
••
ConclusionsConclusions
3Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
IubIub
in TIM Utranin TIM Utran
todaytoday
4Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Reference architecture in Ericsson Area -
today
BTS
BTS
MGW
MSC
SGSN
RXIBTS
BTS
Iub, Mub
Iub, Mub
UTRAN Core Network
RNCIu
Iub
RXI
RNCIu
IurGbE
GTW-A
GTW-A
BTS
GTW-B
MGW
MSC
SGSN
BTS
BTSIub, Mub
GTW-A
GbE GTW-B
BTS
Iub
RXI
RNC
Iur
BTS
Iub
Iub
E1 Links
STM1 links (local)
Iu
5Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Common ITU-T specifications used
Specified by 3GPP
ATM Adaptation
Layer
AAL2
AAL0
AAL5
Physical Layer
Physical Connection (E1/E3/STM1)
VP (Virtual Path)
ATM LayerVC (Virtual Channel)
Radio Network Layer
Transport Network Layer
ATM Transport according to 3GPP R99
UTRAN Protocol layers -
Iub over ATM
(concess. Ericsson)
Radio Application
Layer
WCDMA Radio
Application Channels
6Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Common ITU-T specifications used
Specified by 3GPP
ATM Adaptation
Layer
AAL2
AAL0
AAL5
Physical Layer Physical Connection (Ethernet / Optical)
VP (Virtual Path)ATM Layer
VC (Virtual Channel)
Radio Network Layer
Transport Network Layer
ATM Transport according to 3GPP R99
Radio Application
Layer
WCDMA Radio
Application Channels
IP Layer IP
UTRAN Protocol layers -
ATM over IP
7Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Iub over a GbE backbone
GbE TI
RNCE1
E1
GTW-A
E1
E1
GTW-A
GTW-B
RNC
Link E1
Link STM-1 VC 12
Link STM-1 VC 4Ethernet
OSS
IPATM
ATMATM
8Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Iub over GbE
•
Upgrade
of existing
UMTS sites
to
HSDPA and new Node
Bs
will
be
activated on the TI Gigabit
Ethernet
(GbE)
•
GbE
will
be
also
used
in inner
network segments
between
Media Gateways
and SGSN/MSC Servers
•
GbE
will
lead
to
gradual
phase
out of standalone
dedicated
ATM switches•
Convergent IP based infrastructure for the mobile and fixed networks
•
Multiplexing at IP-DSLAMs
with other Telecom Italia services: IPTV, ADSL, connectivity for business customers
•
Negligible additional delay (MPLS Tunnels of the UMTS VLAN within GbE require few packet processing)
•
Shorter E1 local loops and bandwidth saving for ATM virtual connections within the Gigabit Ethernet.
Migration of Iub onto GbE has started in Q1 2006.
9Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Iub over GBE
RNC
GbE access Gateway(GTW A)
N* x E1
IMA or ATM
GbE backbone Gateway(GTW B)
ATM over IP (GbE)
Node B
ATM VPI=kVCI#1VCI#2
…VCI#n
STM-1 VC4 Link(Unchannelized)
* N typically equals 4 for HSDPA Node Bs
10Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Iub (ATM) over GbE
NodeB
SOL SDH
nxE1 GBE
DWDM Infr. GBE
nxSTM1
SDH
3G
SDH
RNCfeeder
metro
8630 8840
ADM
ADM
Rete otticametropolitana OPM
Circuito ATM
VLAN per UMTS
PWE3 (Martini circuits)
GTW_AGTW_B
ModemSHDSL
ModemSHDSL
Centrale di attestazion
e
SOL rame
metro
STM1CWDM CWDM
11Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Iub over IPIub over IPin P6 GA:in P6 GA:
FunctionalFunctionalhighlightshighlights
12Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Common ITU-T specifications used
Specified by 3GPP
ATM Adaptation
Layer
AAL2
AAL0
AAL5
Physical Layer
Physical Connection (E1/E3/STM1)
VP (Virtual Path)
ATM LayerVC (Virtual Channel)
Radio Network Layer
Transport Network Layer
ATM Transport according to 3GPP R99
UTRAN Iub over ATM
Radio Application
Layer
WCDMA Radio
Application Channels
(by. Ericsson)
13Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Common ITU-T specifications used
Specified by 3GPP
Physical Layer
Physical Connection (Ethernet / Optical)
Radio Network Layer
Transport Network Layer
ATM Transport according to 3GPP R99
Radio Application
Layer
WCDMA Radio
Application Channels
IPTransport Layer
UTRAN Iub over IP
14Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Iub new Protocol Stack (with IP)
Node B Application Part
(NBAP)
AAL2
TransportLayer
Physical Layer
Radio NetworkLayer
Radio NetworkControl Plane
Transport Network
Control Plane
DC
H FP
RA
CH
FP
ATM
AAL5
User Plane
SSCF-UNI
SSCOP
AAL 5
SSCF-UNI
SSCOP
Q.2630.2
Q.2150.2
FAC
H FP
PCH
FP
Data Link Layer
IP
SCTP
ATM ATM Data Link Layer
IP
UDP
ALCAP
HS-D
SCH
FP
TDD
DSC
H FP
USC
H FP
TFCI2 FP
E-DC
H FP
15Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Iub over IP Protocol Stack
DCH, HS-DSCH, E-DCH FACH, PCH, RACH FPsNBAP
TransportNetworkLayer
RadioNetworkLayer
Radio Network Control Plane
Network Synch Radio Network User Plane
NW SoIP
Ethernet
and Node Sync (over FACH)
IPUDPSCTP (*)
NTP
(*) SCTP (Stream Control Transmission Protocol)(by. Ericsson)
16Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
P6 Iub over IP/Ethernet
(by. Ericsson)
17Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Node B side: ET-MFX11 board• Ethernet Board: Auto negotiation for 10/100/1000 Mbps selection• Connectors:
-
1 SFP 1000 Base-X (SMF, MMF) optical port-
6 RJ45 10/100/1000Base-T electrical ports• Integrated Ethernet Switch -
8 IP Interfaces• VLAN 802.1Q, • L2 Ethernet priority 802.1p,• L3 IP Diffserv
priority (DSCP)• Network Synch Client for IP Transport, Iub and O&M• Capacity: 100 Mbps (Iub+Mub
IP overheads included)•
In P6 GA only RBS in HW R3. In P6 FP RBS in HW R2/R1 (TUB2 and
GPB51 needed)•
In RBS the ET-MFX11 board replace the ET-MC1 board (no Dual Stack in
RBS)
•
Layer 2 Link Redundancy: RSTP (Rapid Spanning Tree Protocol, 802.1D-
2004).•
Layer 3 Redundancy: for supervision of the default routers, the
ET-MFX12 board use of Router Path Supervision (RPS). An alternative to the built-in support for router redundancy it is to use other external mechanisms for router redundancy such as VRRP (or HSRP).
ETHERNET1/SFP
Ethernet D
Ethernet C
Ethernet B
Ethernet A
F
O
I
Ethernet E
Ethernet F
18Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
RNC side: ET-MFX12 board
• Ethernet Board: Auto negotiation for 10/100/1000 Mbps selection• Connectors:
-
1 SFP 1000 Base-X (SMF, MMF) optical port-
6 RJ45 10/100/1000Base-T electrical ports• Integrated Ethernet Switch –
8 IP Interfaces• VLAN 802.1Q, • L2 Ethernet priority 802.1p, • L3 IP Diffserv
priority (DSCP)• Network Synch Server for IP• Capacity: 500 Mbps (Iub IP overheads included)•
ET-MFX 12 can be placed in any subrack (MS and/or ES) and RXI in any
ETB slot (in addition or replacing existing ET Boards –
Dual Stack in RNC).
•
Layer 2 Link Redundancy: RSTP (Rapid Spanning Tree Protocol, 802.1D-
2004).•
Layer 3 Redundancy: for supervision of the default routers, the
ET-
MFX12 board use of Router Path Supervision (RPS). An alternative
to the built-in support for router redundancy it is to use other external mechanisms for router redundancy such as VRRP (or HSRP).
ETHERNET1/SFP
Ethernet D
Ethernet C
Ethernet B
Ethernet A
F
O
I
Ethernet E
Ethernet F
19Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Definitions: IP Host and MultiHoming
GPB Host = Ip
Host in the GPB board -
Used for Control PlaneSPB Host = Ip
Host in the SPB board -
Used for User PlaneET Host = Ip
Host in the ET-MFX board
IP Host = "any terminal equipment connected to an IP nework (hosting an application)".3 IP Host types available in Ericsson Utran:
MultiHomingAn IP Host is characterized by one (Single-
Homed Host) or more IP addresses (Multi-
Homed Host). Multihoming
is supported on GPB and SPB hosts, allowing two IP addresses to be defined per IP Host: these IP addresses can be generally used simultaneously or one at a time, and are controlled by the application software
ApplicationHost
Board
IP address 1
IP path 1
IP path 2
IP address 2
by Ericsson
20Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Definitions: Movable Host and IP Interface
IP Interface = One IP Physical Port + One VLAN (subnet)
• It is not possible to have an IP Interface associated to:-
more than one physical IP Port (and more than one ET-Board)-
more than one VLAN
• It is possible to have: -
an IP Interface associated to more than one IP Host-
more than one IP interface associated to the same IP port-
more than one IP interface associated to the same VLAN
•
Max 8 IP Interfaces are available in the ET-MFX board. (= max 8 VLAN in a ET-
MFX board)
ApplicationHost
Board
ApplicationHost
BoardET-IP
ET-IP GPB 1
GPB 2by Ericsson
Movable Host (only supported by GPB Hosts)Movable host makes it possible to move the IP host between boards. If the application software is moved from one board to another, the application determines which board the host executes on and the host is automatically reconfigured on the new board.
21Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
ET-MFX Architecture
ETHERNET1/SFP
Ethernet D
Ethernet C
Ethernet B
Ethernet A
F
O
I
Ethernet E
Ethernet F
InternalEthernetSwitchExternal
Eth ports InternalEth port
SystemPort
TransportNetwork
Each ET-MFX board is configured with one IP-Interface:-
One Vlan, One Physical Port
ET-MFX
IPInterface
22Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
ET-MFX, Typical RNC Architecture
GPBHost
Appli-cation
ETMFX12
ETMFX12
GPBHost
Appli-cation
SPB Host (pool)
Mul
tiHom
edM
ovea
ble
SC
TP H
ost
Router Path
Supervision
RNC
Mul
tiHom
edH
ost
23Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
ET-MFX, Typical RNC Architecture
MS
ES1
ES2
(by. Ericsson)
24Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
RNC IP Addressing
Control PlaneOne address for each Module GPB / ET-MFX12 association. One RNC Module "sees" two ET-MFX12.
User PlaneOne address for each ET-MFX12 (SPB Host is a Pool)
RPS – Def GTWRPS: one address for each ET-MFX12Default Gateways: two addresses (one address for each Router)
Example for an RNC Type C-
15 GPB Modules in P6, 6 ET-MFX12 boards, ONE Vlan
/ Subnet
-
Control Plane: 30 IP addresses needed for Control Plane-
User Plane: 6 IP addresses needed for UP
-
RPS: 6 IP addresses needed for RPS, 2 IP for 2 Default Gateways
All IP addresses above share the same subnet
25Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
ET-MFX, Typical RBS Architecture
InternalEthernetSwitchExternal
Eth ports InternalEth port
SystemPort
TransportNetwork ET-MFX
CBUFEPort
O&MTraffic
SiteLAN
2 VLANs:Vlan "A": IubVlan "B": Mub
JumperCable
26Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
RBS IP Addressing
SUBNET / VLAN "A" for Iub (User and Control Plane)-
1 IP address reserved for Control Plane
-
1 IP address reserved for User Plane / Synch Host-
1 IP address optionally reserved for RPS (currently not used)
SUBNET / VLAN "B" for Mub-
1 IP address needed for O&M
-
Additional IP addresses may be needed for Site LAN devices
27Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Layer 2 restriction
"E/// recommendations for Layer 2 Networks�To reduce the risk of performance reduction in a WCDMA RAN node due to flooding of traffic, any layer 2 network aggregated in an
RNC or
RBS node shall be limited.�Due to this Ericsson recommend:–
That a layer 3 node shall be placed between the RNC and any layer 2
access network–
That the IP RBS is a leaf RBS and only aggregate SiteLAN
connected
equipment."
February 2008
28Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Network Synchronization over IP
•
Client -
Server synchronization architecture. A Network Synch Server is in RNC and a client in RBS. Two optional features: FAJ 121 1154 "Network Synch server for IP transport" for RNC or RXI, FAJ 121 1155 "Network Synch client for IP transport" for RBS.
•
Synch -
Server connection is based on SNTP Protocol (Simpliflied Network Time Protocol).
•
No other synchronization functionalities required (external devices, Synch nodes, GPS etc.)
•
Requirement for network synchronization: delay variation < 0.1 ms for 1% SNTP Packets.
(by Ericsson)
29Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Transport Requirements for Iub over IP
•
Service requirements: no additional requirement for the backhauling IP network compared to the "ATM over GbE" solution.
• Network Synchronization requirement:delay variation < 0.1 ms for 1% SNTP Packets.
30Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
QoS for Iub over IP
•
QoS
separation is supported at IP level, using DSCP (Differentiated Services Code Points). [0...63].
•
QoS
separation is supported at Ethernet level by using the Priority
Bits (L2 Ethernet priority 802.1p). P-bit [0..7]
• The selection of QoS
class of the bearers is operator configurable.
Bearer X
Bearer Y
Bearer Z
DSCPX
DSCPY
DSCPZ
P-BitX
P-BitY
P-BitZ
31Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
(by Ericsson)
Configurable transport bearer QoS
class –
Iub default values
32Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
(by Ericsson)
QoS
classes: mapping of DSCP over P-Bit -
default values
Default mapping of Layer 3 DSCPOver Layer 2 Ethernet P-bits
This mapping table is configurable by operator at Internal Ethernet Port level. The settings are visible in the dscpPbitMap attribute on InternalEthernetPort
MO.
This means all the IP interfaces associated to the relevant Internal Ethernet Port will use the same DSCP to P-bit mapping
33Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Architecture,Architecture,
implementationimplementation
andand
first testsfirst tests
34Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
OPM
RNCEth
Eth
Eth
Eth
RNC
Link E1
Link STM-1 VC 12
Link STM-1 VC 4Ethernet
OSS
IP IPIP
Eth
Eth
Iub over IP
35Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
RNC
GE
GE
10GE
10GEGE
METRO
NodeBFEEDER
10GE 10GE
Sede SGU
RemoteFeeder
RETE OTTICA DWDM o
fibra nuda10GE
10GE
10GE
10GE
METROdi raccoltaGE
Sede SL
Sede SGURemote
Feeder
GE
10GE
Anello fibra ottica in primaria
NodeB
GE 1:2
1:2ONT OLT
NodeB
GE
VDSL2+
Modem
ONU
2:16
Fibra nuda
Sede SL
Anello fibra ottica in primaria
Iub over IP –
Architecture 1 (FTTB)
36Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Iub over IP –
Architecture 2 (FTTCab)
RNC
GE
GE
10GE
10GEGE
METROFEEDER
10GE10GE
Sede SGU
RemoteFeeder
RETE OTTICA
DWDM o fibra nuda
10GE
10GE
10GE
10GE
METROdi raccolta
Sede SLSede SGU
RemoteFeeder
GE
Anello fibra ottica in primaria
NodeB
NT VDSL2
copperVDSL2
NodeB
NT VDSL2
Eth
Eth
copper
VDSL2
Cabinet con ONU VDSL2
37Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
OPMOpticalPackedMetro
MS
Eth
Eth
Eth
Iub over IP (2)
ES1
ES2
DCN(OSS)
RdG
MdR
MdR
RemoteFeeder
RemoteFeeder
RPS HSRP
HSRP
RSTP
38Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
QoS
Mapping
3 QoS Priority Levels• Maximum: Network Synchronization and Conversational/Streaming traffic• Medium: PS R99 DCHs and NBAP signaling• Best effort: HSDPA/HSUPA
Layer 3:DSCP
Layer 2:P-bit
High Priority46
Sync
18
CS & Stream5
Sync, CS, Stream
Medium Priority 22PS R99, NBAP
3PS R99, NBAP
Best Effort 0HSxPA
0HSxPA
Our Optical Packed Metro is a Layer 2 network working with 3 P-bit values (5, 3, 0), so we had to adapt the mapping of DSCP to P-bit to the existing situation.
39Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
QoS
Mapping (2)
Layer 3:DSCP
Layer 2:P-bit
46
Sync18
CS & Stream
5Sync, CS,
Stream
22PS R99, NBAP
3PS R99, NBAP
0HSxPA
0HSxPA
(by Ericsson)
40Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Iub –
RNC IPs
and Subnet
In order to reserve the right amount of IP adresses, the worst case ("future proof" approach) is adopted i.e. RNC type F:-
up to 6 Subracks
-
up to 3+6+6+6+6+6 = 33 RNC Modules-
up to 16 ET-MFX12 boards (maximum value for the RNC)
• User Plane: 16 IP addresses (16 ET-MFX boards)• Control Plane: 66 IP addresses (2 * 33 RNC Modules)• Routing Path Supervision: 16 IP addresses (12 ET-MFX boards)• Default Gateways: 2 IP addresses (2 Default Gateways)• Subnet and Broadcast: 2 IP addresses• OPM: 4 IP addresses
Total: 102 IP addressesClosest Subnet Size: 128 (subnet /25)
41Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Iub –
RBS IPs
and SubnetIub Subnet/Vlan:• User Plane: 1 IP address • Control Plane: 1 IP address• Default Gateways: 2 IP addresses (2 Default Gateways)• Subnet and Broadcast: 2 IP addresses
Total: 2*N + 4 IP addresses (N = n. of RBSs)Maximum value (768 Node Bs) = 1540 IP Adresses (more than /22 subnet, not advisable)Subnet Size adopted: /22 (1024 Ips) = up to 500 Node BsA second /22 subnet will be adopted in case of more than 500 Node Bs.
Mub Subnet/Vlan:• Mub: 1 IP address • Default Gateway: 1 IP addresses (only 1 Default Gateway + HSRP)• Subnet and Broadcast: 2 IP addresses.• Site Lan (at RNC level): 16 IP addresses.• RdG configuration: 8 IP addresses
Subnet Size adopted: /22 (1024 Ips) = up to 500 Node BsA second /22 Subnet will be adopted in case of more than 500 Node Bs.
42Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Overall data definition –
RNC Level
RNC Level
• VlanID_RNC_side• Subnet_RNC_side
• Def_GTW1 (1 IP)• Def_GTW2 (1 IP)• IP_Iub_CP (66 IP) = X.Y.W.1-66• IP_Iub_UP (16 IP) = X.Y.(W+1).1-16• 16 IP per RPS = X.Y.(W+2).1-16 • 4 IP per OPM = X.Y.(W+3).251-254
• Mub_OeM_on_Site
(16 IP)
• TD (pointer to the 2 Optical Fiber delivery contract)
43Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Overall data definition –
RBS Level
Node B Level
• RBS_nr• TD (pointer to the OF delivery contract)• IP_Iub_UP
(1 IP)
• IP_Iub_CP
(1 IP) • Def_GTW1 (1 IP)• Def_GTW2 (1 IP)• VlanID_lato_NB• Subnet_lato_NB• Optional VlanID_NB_side_over500• Optional Subnet_NB_side_over500
• Mub
(1 IP)• Mub_Def_GTW
(1 IP)
• Mub_VlanID• Mub_Subnet• Optional_Mub_VlanID_over500• Optional_Mub_Subnet_over500
44Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Configuration Tool Development
Project DataTransport Radio O&M CN
ToolASCOT
Scripts(via EMAS)
RXIRNC BTS
ToolIRMA
xml(RANOS)
Router configuration
and connection with RANOS
Data load(pseudo manual)
MSC
SGSN
BTS
Installationactivities
Minimumpreconfig.
on site
UTR
45Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Lab testsLab tests(ongoing)(ongoing)
46Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Tests and Field Trial
Jan-Mar Apr May Jun Jul Aug-Dec
Project definition
On site activities (HW, Swap)
Lab Test
Field Test ph1
Field Test ph2
today
-
Fiber to the RNC-
HW Swap in RNC-
Fiber to the Node B (FTTB)-
Node B Swap HW R2-> R3-
HW Swap R2->R3Final part of P6 Lab test
First 2 RBS in Milan:
Field Test ph3
9 RBS in Milan (in HW R3)
More RBSs in HW R2 (P6 FP needed)
Iub over IP over ADSL2+ could be testedin the 2H 2008
47Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
First Lab Test Results
Throughput test: HSDPA 16-QAM 10 codes: 5.8 -
6.0 Mbps reached
ok
Only 1 week of test activities today
Configuration issues: -
2 days for parameter reconfiguration after P6.0.0 EU6 load ok
-
HSRP problems in the backhauling network (OPM) ok-
NTP configuration (2 server configurable in Node B) ok
-
NTP link in the uplink path (RBS -> RNC) ongoing
Very good interwork and coordination between Utran and backhauling experts are needed in order to deal with configuration problems
48Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
ConclusionsConclusions
49Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Evolutions
Iub over IP over ADSL2+ / VDSL (FTTCab)
Iub over IP and ATM (Dual Stack in RBS, P6 FP)
(by Ericsson)
(by Ericsson)
50Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Conclusions
• Iub over IP is THE solution for:─
the transport bottlenecks removal
─
the evolution of the network towards new services (HSPA Evolution, in Utran P7, and LTE)
•
Iub over IP is not an immediate solution for the whole network due to the slow availability of the optical fiber (FTTB solution).Iub over IP over VDSL can be adopted in case of FTTCab.
•
Under evaluation the P6 FP RBS Dual Stack option, to be used with ADSL2+ / VDSL
51Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Acknowledgements:
Michele Marone, Paolo Parodi, Patrizio Pasqualetti, Barbara Pippi
(Ericsson Italy, Utran IP experts)
Elena Spreafico (TIM, Utran Transport expert)
Topazzi Simone & C. (TIM, Test Plant)
52Kista 10-11 Jun 2008 TIM A.Guerrieri - Iub over IP
Thanks for Your Attention
Alessandro Guerrieri
TIM Telecom Italia Wireless Access Engineering [email protected]