WCDMA RAN P6

68
WCDMA RAN P6 IP Transport

description

WCDMA RAN P6. IP Transport. Contents. Overview Infrastructure aspects O&M transport Network Synchronisation Control Plane transport User Plane transport TNL QoS Node Synchronisation. Infrastructure aspects. Overview Node configuration RNC RBS Network ET-MFX IP Addressing/VLAN. - PowerPoint PPT Presentation

Transcript of WCDMA RAN P6

Page 1: WCDMA RAN P6

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WCDMA RAN P6

IP Transport

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Contents

Overview Infrastructure aspects O&M transport Network Synchronisation Control Plane transport User Plane transport TNL QoS Node Synchronisation

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Infrastructure aspects

Overview Node configuration

– RNC– RBS

Network ET-MFX IP Addressing/VLAN

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Ericsson Internal IP Transport in WCDMA RAN P6 2007-11-024

RNC 3810 with IP (P6)

RNC model C in example

Iub

Iu/Iur: ET-MFG– 1+1 GBE ports

Iub: ET-MFX– 7 port built in Ethernet switch– 1 SFP + 6 Electrical Eth. ports

Variant with 6 SFP and 1

Electrical ports available – Synch server Iu

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RBS with IP (P6)ET-MFX

For Iub and O&M IP/Ethernet interface with optional

Ethernet switch 1 SFP + 6 Electrical Eth. ports Synch client

3206 in example

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RNC & RBS HW

RNC RBS

ETMFX

ETMFX

ETMFG

IubIur

Iu

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Iub Interface Protocols (IP Transport)

DCH, HS-DSCH, E-DCH FACH, PCH, RACH FPs

NBAP

TransportNetworkLayer

RadioNetworkLayer

Radio Network Control Plane

Network Synch Radio Network User Plane

NW SoIP

Ethernet

and Node Sync (over FACH)

IP

UDPSCTP

NTP

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Simple RAN transport

RBS site 1

RNC 1

GE GE

RNC 2

GE GE

RBS 1

GE

RBS 2

GE

RBS 31

GE

RBS 32

GE

XLANSwitch

XLANSwitch

XLANSwitch

COMINF

OSS-RC-

Primary Site

XLANSwitch

RBS site 2 RBS site 3

RNS 1 RNS 2

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IP Network applications

Security solution

Customer Product Information (CPI) Library

Network Switch

RAN O&M Router

Backup solution

COMINF Servers

OSS

Repository

IP WRAN Management Network

M-PBN

Iur MGW CN

Iu

Iu

RNC Site

Leaf RBS’es

DNS, DHCP

ENGINEERING

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IP associations on Iub

RNCRBS

RBS

RBS

UP/SoIP H

CP H

UP/SoIP H

Sign H

IP network

Traffic domain

A1.B1.C1.D1

O&M hostO&M host

O&M RAN domain

O&M Network

OSS/Servers

Core NetworkA2.B2.C2.D2

1 per ET

1 per MP

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IP Addressing/VLAN - Overview

Basic principles:– Logical separation of O&M and traffical IP Transport

VLAN ID 100-110 traffic, VLAN ID 900-910 O&M (typical) Share physical resources

– One-to-one mapping Subnetwork <-> VLAN– Traffical and O&M IP networks can use private IP addresses (see

RFC 1918)– The recommendation is to use addresses from the 10-network

(10.x.y.z) IP Addressing considerations:

– Addressing for Iu/Iur in RNC (common with CN Nodes)– Iub IP Transport

L3 based (one subnet per node) L2 based (large subnets)

– O&M IP Addressing

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RNC Iub (traffical) IP Addresses

Type of IP address Max number

Redundancy

Number of IP addresses

IP host for Iub UP (ET-MFX) 16 - 16

IP host for Iub CP (module MP) 33 2 66

Subtotal (RNC IP hosts): 82

Default Gateway (external) 1 3 3

Actual subnet address 1 - 1

Broadcast address 1 - 1

Total (RNC with subnet): 87

Closest Subnet size 128 (41 spare)

Note: Assume allocation for largest possible RNC

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RBS Iub (traffical) IP Addresses

Type of IP address Max number

Redundancy

Number of IP addresses

IP host for UP (ET-MFX) 1 - 1

IP host for CP 1 - 1

Subtotal (RBS IP hosts): 2

Default Gateway (external) 1 1-3 1 (typical)

Actual subnet address 1 - 1

Broadcast address 1 - 1

Total (RBS with subnet): 5

Closest Subnet size 8 (3 spare)

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Example: IP addressing – L3 IP Network

RBS-part, 512 000 addr.(64 000 x 8)

RNC-part 8192 addr.(64 x 128)

Address-block for RBS #1

Address-block for RNC #64

For Iub (traffic VLANs) with L3 IP network with separate subnets for each node: - Assume max 64 RNC and 64 000 RBS - Allocate 128 addresses per RNC (/25 subnet) - Allocate 8 addresses per RBS (/29 subnet) - Total address space: 520 192 addresses

Address-block for RBS #64 000

Address-block for RNC #1

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Example: IP Addressing – L2 IP Network

RNS #1: 2048 addr.

Address-block for RBS #1

Address-block for RNC #2

For Iub (traffic VLANs) with L2 IP Network with one subnet per RNS - Assume max 64 RNS with 1 RNC and connected RBSs - Max 82 addresses per RNC and 2 addresses per RBS - Allocate 2048 addresses per RNS (/21 subnet) - Will be enough for close to 1000 RBS nodes per RNS - Total address space:131 072 addresses

Address-block for RNC #1

RNS #2: 2048 addr. RNS #64: 2048 addr.

Note: Reparenting require reconfiguration of (traffical) IP addresses in RBS

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RBS Iub (O&M) IP Addresses

Type of IP address Max number

Redundancy

Number of IP addresses

IP host for O&M 1 - 1

IP hosts on Site LAN 0-.. - 4 (typical)*

Subtotal (IP hosts): 5

Default Gateway (external) 1 3 1 (typical)

Actual subnet address 1 - 1

Broadcast address 1 - 1

Total (RBS with subnet): 8

Closest Subnet size 8

*) In RAN CPI 2/1553-HSD 101 02/6, typical value is 13

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IP network

RBS: VLAN configuration

ET-MFX

Traffic VLAN

O&M VLANgeUP host

CP host

CBU

VLAN tagging

INET Router

O&M Site LAN

untagged O&M traffic

fe

O&M host

RBSTraffic Def GW

O&M Def GW

i/f

ge

ge

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IP Network

RNC: VLAN configuration

ET-MFX

Traffic VLAN

ge

up to 16x UP hosts

up to 33x CP hostsVLAN tagging

RNC

Traffic Def GW

ge

ET-MFX

ge

i/f

ge

i/f

ge

ge

Traffic Def GW (alternate)

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RNC physical configuration

Each subrack is equipped with >=2 ET-MFX

– Load-sharing and– redundancy

Aggregation of the traffic from extension subracks and main subrack is performed with ET-MFX-s in main subrack

RSTP is used to provide loop free topology

Mai

n ca

bine

t

ES2

ICF

MS

ES1

Example only

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ET-MFX configuration

Packet distributor

ET-MFX

Host

Ethernet switch

EthernetSwitchPortsystemPortuntaggedIngressPriorityuntaggedIngressVid

InternalEthernetPort

dscpPbitMap

EthernetSwitch

SwitchPortStp

RSTP

SwitchStp

RSTP

ExchangeTerminalIp pbitQueueMapvlanMembership

IpAccessHostEt

IpInterface

defaultRouter0vid

vLan

ipAddress

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RSTP overview The rapid spanning tree

protocol (RSTP) is used to provide a loop free topology for a bridged/switched LAN

Used internally in RAN nodes and between nodes

– RNC: Mandatory ON due to link and ET-board redundancy solution

– RBS: Default is OFF. Shall be ON if the network topology introduces loops

OSS/COMINF

IPHOSTIP

HOST

RBS 1 (Hub)

RBS 2 (Leaf)

O&M router

Cab 1 Cab 2

CPE CPE CPE CPECPE

CPE

UNI

UNI

RS

TP

do

mai

n

L2 Service

ET-MFX

ET-MFX

ET-MFX ET-MFX

ET-MFX ET-MFX

ET-MFX

ET-MFX

ET-MFX

ET-MFX

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RSTP – SwitchStp

Attribute Type Default Range Description

bridgeForwardDelay Long 150 40..300 The delay used by the switch before changing to the Forwarding state, in case of a port interoperating with a legacy STP switch.

bridgeHelloTime Long 20 10..100 Interval between periodic transmissions of configuration messages by designated ports.

bridgeMaxAge Long 60 60..400 The maximum time interval before a switch, not receiving any BPDUs, assumes that a network change has occurred

bridgePriority BridgePriority PRIO_32768 Switch priority used by the protocol

This MO is automatically created by the system, when an EthernetSwitch MO is created.

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RSTP – SwitchPortStp

Attribute Type Default Range Description

actualPathCost Long, readOnly 1..200 000 000 Actual path cost.

configuredPathCost Long 20000 1..200 000 000 Path cost. If manualPathCost is set to true, the actual path cost will be determined by this attribute. If manualPathCost is false, the actual path cost may differ from the value of this attribute.

edgePortBpduGuardTimeOut Long 600 1..65536 The time before an Edge port blocked with BPDU Guard goes unblocked.

edgePortMode EdgePortMode ADMIN_EDGE_OFF

The behavior of an edge port

manualPathCost boolean false Determines the possibility to manually configure the path cost. If this attribute is set to false, the system ignores the configured path cost set in configuredPathCost.

priority Priority PRIO_128 Port priority. The port with the lowest portPriority value will be selected as Root port in the case when more than one port is connected to the Root bridge.

This MO is automatically created by the system, when an EthernetSwitchPort MO is created.

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O&M transport

Overview Implementation Configuration

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IP Host

O&M transport in RBS

ET-MFXMPEthernet switch

TCP/UDP

O&M Applicatins

Configuration as in P5 for site access EthernetSwitchPortuntaggedIngressPriority

untaggedIngressVidvlanMembership

Untagged Ethernet frames

Ethernet frame tagging

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Allocation of connections, example (on ET-MFX switch in RBS)

PORT 7 (SFP)

ET-MFX

CBU

Int. PORT

FE

System port GE (SFP/optical)

Alt. System port GE (electrical)

Terminal interface

Site-LAN

Spare Port 2

Spare Port 1

VLAN allocation

Port 7 (System port - SFP)VLAN TrafficVLAN O&M VLAN ’Site LAN’ (O&M)

Port 6 (Alt. System port)VLAN TrafficVLAN O&M VLAN ’Site LAN’ (O&M)

Port 5 (Spare Port 1)Locked

Port 4 (Site-LAN)VLAN ’Site LAN’ Add and Remove VLAN ’Site LAN’

Port 3 (Terminal Interface)VLAN O&MAdd and Remove VLAN O&M tag

Port 2 (O&M interface)VLAN O&MAdd and Remove VLAN O&M tag

Port 1 (Spare Port 2)Locked

Port InternalVLAN Traffic

O&M

O&M

PORT 6 (F)

PORT 5 (E)

PORT 4 (D)

PORT 3 (C)

PORT 2 (B)

PORT 1 (A)

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Network Synchronisation

Overview Protocol stack Signalling Implementation Algorithm principles Configuration

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Network (frequency) synchronisation – overview

RBS need to maintain a stable controlled radio frequency in the air interface.

– +/- 50ppb for a macro-cell RBS (25.104)

Poor synchronisation impacts critical KPIs– Decreases accessability and retainability

For TDM, RBS is synchronised to the transport network.

– +/- 16 ppb accuracy provided by the TDM network.

For IP, alternative methods must be found.– GPS at RBS site– Time stamping of packets

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Network (frequency) synchronisation – overview

Synchronisation of RBSs based on timing over IP packets

– Possibility to use multiple SoIP servers

– Variable rate of timing packets as required by the different RBSs.

Common solution for WCDMA and GSM

IPTransport

Service

RNC

Remote area

IntegratedSoIP server

Local SoIP server

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Network synchronisation – protocol stack

NTP

UDP

IPv4

Ethernet

PHYDatalink layer and PHY

layer termination provided in RNC and RBS, may be

different in the network

Further tunnelling may be applied in the network

Transport option dependent protocol stack

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Network synchronisation – protocol stack

LI VN Mode Stratum Poll Precision

Root Delay

Root Dispersion

Reference Identifier

Reference Timestamp

Originate Timestamp

Receive Timestamp

Transmit Timestamp

Client in request

Server in response

GPS in case of locked mode

LOCL in case of not locked mode

LI = 3 (not synchronised) or Stratum = 0 (unspecified/unavailable) indicate unreliable timestamp

T1

T2

T3

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1. NTP: Request (T1)

Network Synchronisation – Signalling

2. NTP: Response (T1, T2, T3)

CRNC (synch server) RBS (synch client)

3. Generate frequency reference

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Network Synchronisation – Implementation

ET-MFX

NTP termHW basedtimestamp

Ethernet

RNC Site

Ext sync

TUB_A

NTP ServerHW basedtimestamp

ET-MFX

48.6MHz

TUB_B19.44MHz

19.44MHz

IP connectivity Network

IP connectivity Network

RBS Site

CBU

NTP request

NTP response

RBS ClientRNC Server

SoIPClient SW

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Network Synchronisation – Algorithm principle

Time

Probability

Tmin Tmax

DelayDelay variation

The syncronisation client (The RBS) decides the rate of NTP requests

Algorithm uses only the 1% least delay synchronisation packets. Client synchronisation algorithm

– E/// proprietary algorithm (is not limited by RFC1305 limitations)– NTP (RFC1305 and RFC2030) used only as ”signalling” protocol

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SoIP measured performanceLow load on IP network (40%)

IP packet delays up to 1.9 ms

Applied NW delays

RBS frequency well within 50 ppb

RBS BBclock stability

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SoIP measured performanceHigh load on IP network (90%)

IP packet delays up to 13 ms

Applied NW delays

RBS frequency well within 50 ppb

RBS BBclock stability

System also stable to link breaks, rerouting and packet loss

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Network synchronisation – Configuration (RNC)

NTP Server

Packet distributor

ET-MFX

Host

Ethernet switch

IpAccessHostEt IpInterface

ipAddressntpServerMode

TUB

TU

defaultRouter0networkPrefixLengthvidvLan

• Configure as NW Synch Server• Typically activated on all ET-MFX boards in RNC• Share IP Host with Iub UP

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Network synchronisation – Configuration (RBS)

Packet distributor

ET-MFX

IP Host

Ethernet switch

CBU

TU

IpAccessHostEt IpInterface

ipAddressntpServerMode

IpSyncRefntpServerIpAddress

SynchronizationsynchReferencesynchPriority

defaultRouter0networkPrefixLengthvidvLan

• Configure as NW Synch Client in RBS• Share IP Host with Iub UP

NTP Client

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Node Synchronisation – Observability

pmHDelayVarBest1Pct – This counter shows the Highest Delay Variation of the best 1%

synchronization frames (with the lowest delay) experienced by the active IP synchronization reference during the PM interval

pmHDelayVarBest10Pct– This counter shows the Highest Delay Variation of the best 10%

synchronization frames (with the lowest delay) experienced by the active IP synchronization reference during the PM interval

pmHDelayVarBest50Pct – This counter shows the Highest Delay Variation of the best 50%

synchronization frames (with the lowest delay) experienced by the active IP synchronization reference during the PM interval

pmMaxDelayVariation – This counter shows the Maximum Delay Variation experienced by the

active IP synchronization reference during the PM interval

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Control Plane transport

Supported transport options Protocol stack Transport Bearer Establishment Transport Bearer termination Configuration

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Control Plane transport – overview

CRNC

RBS_1

SCTP/IP transport

RBS_2

USAAL/ATM transport

RBS may be ATM only (RBS_2) or IP only (RBS_1)

One Iub supports one transport option

RNC supports both Iub transport options (on different interface instances)

Each Iub has two (2) transport bearers for NBAP – one for

NBAP-C and one for NBAP-D

Transport bearer in case of IP transport is SCTP association

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Control Plane transport – protocol stack

NBAP

SCTP

IPv4

Ethernet

PHY

Transport option independent

Datalink layer and PHY layer termination provided in RNC and RBS, may be

different in the network

Further tunnelling may be applied in the network

Transport option dependent protocol stack

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4. INIT ACK

Control Plane transport – Iub Transport Bearer Est

RBS

3. INIT(Source IP Address 1=IP_RNC1, Source IP Address 2=IP_RNC2, Source Port Number, Destination IP Address=IP_RBS, Destination Port Number=“NBAP-C/D port”)

CRNC

1. (Allocate RBS control, no change)

2. Initialise SCTP association:

i. Reserve local TrBearer termination point

6. COOKIE ACK

5. COOKIE ECHO

SCTP is client-server protocol from SCTP association establishment perspective. On Iub

RNC is client and

NodeB is server

SCTP is peer-to-peer protocol from data transport perspective

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Ericsson Internal IP Transport in WCDMA RAN P6 2007-11-0245

IP Host

Control Plane transport – TrBearer term. in RBS

Packet distributor

ET-MFXMP

IP link termination on IP Host

Intra-Node IP link

IP link termination on packet distributor

Ethernet port

SCTP port

Ethernet switch

SCTP Host

NBAP-C NBAP-D

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Control Plane transport – TrBearer term. in RNC

IP Host

(multi-homed)

Packet distributor

ET-MFXModule MPEthernet switch

SCTP Host

NBAP-C NBAP-D

Packet distributor

ET-MFXEthernet switch

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Ericsson Internal IP Transport in WCDMA RAN P6 2007-11-0247

Control Plane transport – Configuration (RBS)

IpAccessHostGpb

IpInterface

controlPlaneTransportOption

activeBearer (ReadOnly)sctpRef (ReadOnly)

Iub

NbapCommon

NbapDedicated

IP Host

Packet distribut

or

ET-MFXMPEthernet switch

SCTP Host

Sctp

activeBearer (ReadOnly)sctpRef (ReadOnly)

ipAddress1ipAddress2 defaultRouter0

networkPrefixLengthvidvLan

NBAP-C NBAP-D

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Control Plane transport – Configuration (RNC)

IpAccessHostGpb IpInterface

IubLink

controlPlaneTransportOptionremoteCpIpAddress1sctpRef (ReadOnly)

IP Host(multi-homed)

MP

Packet distributor

ET-MFXEthernet switch

SCTP Host

Sctp

Packet distributor

ET-MFXEthernet switch

IpInterface

defaultRouter0networkPrefixLengthvidvLan

defaultRouter0networkPrefixLengthvidvLan

ipAddress1ipAddress2

NBAP-C NBAP-D

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Ericsson Internal IP Transport in WCDMA RAN P6 2007-11-0249

User Plane transport

Supported transport options on Iur and Iub Protocol stack Transport Bearer Establishment

– Transport Bearer identifiers Address formats

– TNL QoS class– Link Characteristics

Transport Bearer termination– RBS– RNC

Configuration

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User Plane transport – overview

SRNC DRNC

RBS_1

UDP/IP transport

RBS_2

AAL2/ATM transport

RBS may be ATM only (RBS_2) or IP only (RBS_1)

One Iub supports one transport option

One Iur from an SRNC perspective supports one transport option

DRNC

As long as transport resources are configured for both transport options, activation of IP transport option does not have to be synchronised at both

ends of Iur interface instance

RNC supports both Iub\Iur transport options (on different interface instances)

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User Plane transport – protocol stack

Iub\Iur FP

UDP

IPv4

Ethernet

PHY

Transport option independent

Datalink layer and PHY layer termination provided in RNC and RBS, may be

different in the network

Further tunnelling may be applied in the network

Transport option dependent protocol stack

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7. NBAP: Common TrCh/RL Setup/Addition Resp / RL Reconf. Prepare (TLA, B-ID)

User Plane transport – Iub Transport Bearer Est

RBS

4. NBAP: Common TrCh/RL Setup/Addition Req / RL Reconf. Prepare (TLA; B-ID; TNL QoS)

S/D/CRNC

1. Calculate Link Characteristics

2. Identify transport option – configured per IubLink

3. In case of IP transport:

i. Select TNL QoS Class

ii. Reserve local TrBearer termination point(s)

Only in case of IP transport (for every transport bearer)

5. Verify transport option

6. In case of IP transport (no change for ATM):

i. Reserve local TrBearer termination point(s)

ii. Configure transport bearer with destination TrBearer identifiers

8. Verify transport option

9. Configure transport bearer with destination TrBearer identifiers

IPv4 Address

UDP port

UL DSCP

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Ericsson Internal IP Transport in WCDMA RAN P6 2007-11-0253

6. NBAP: RL Setup/Reconf. Req (TLA; B-ID; TNL QoS)

Iur User Plane – Iur Transport Bearers terminated in DRNC

8. NBAP: RL Setup/Reconf. Resp (TLA, B-ID)

RBS

4. RNSAP: RL Setup/Addition/Reconf. Req (TLA; B-ID; TNL QoS)

SRNC DRNC

1. Calculate Link Characteristics

2. Identify transport option – configured per IurLink

3. In case of IP transport:

i. Select TNL QoS Class

ii. Reserve local TrBearer termination point(s)

5. The same as normal IP Iub case

7. The same as normal IP Iub case

9. The same as normal IP Iub case

10.In case of Iur/IP

i. Reserve local TrBearer termination point(s)

ii. If needed, select UL QoS Class

11. RNSAP: RL Setup/Addition/Reconf. Resp (TLA; B-ID)

12.The same as normal IP Iub case

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User Plane transport – TrBearer identifiers

TLA (IP address) is signalled in NSAP format– AFI = 35 (length 1 octet)– IDI (IANA ICP = 1, length 2 octets)– DSP (IP address in first 4 octets, length 17 octets)

B-ID– UDP port, dynamically allocated (>=1024)

IDP DSP

AFI IDI

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User Plane transport – QoS and LC

SRNC DRNC

RBS RBS

SRNCa) Terminates Iub\Iur transport

bearers;b) Defines UL and DL QoS

class for Iub\Iur transport bearers;

c) Calculates LC for Iub\Iur transport bearers

DRNCa) Terminates Iur transport bearers in

case Iur and/or Iub is over IP;b) Defines UL QoS class for Iur transport

bearers in case of Iur/IP and SRNC did not send respective TNL QoS IE

DRNC in case Iur and/or Iub is over IP:a) Terminates Iub transport bearers;b) Defines UL and DL QoS class for Iub

transport bearers;c) Calculates LC for Iub transport bearers

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Ericsson Internal IP Transport in WCDMA RAN P6 2007-11-0256

User Plane transport – TrBearer term. in RBS

Converter Packet distributor

ET-MFXBB

FP Term.

AAL2 CEP-s

IP link termination on Host

Node internal AAL2 connection

Intra-NP IP link

IP link termination on packet distributor

Ethernet port

Host

UDP port

Ethernet switch

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User Plane transport – TrBearer term. in RNC

SP

FP Term.

CPS

ET-MF4

NPATM

AAL2 connection point

STM-1 port

Converter Packet distributor

ET-MFX

Host

Ethernet switch

Number of Hosts for UP termination are combined to a Pool of Hosts and the Host is selected for a TrBearer according to

a) Pool used for particular IurLink\IubLink

b) location of the CcDevice\DcDevice for particular Cell\Ue;

c) transport bearers previously established for the Cell\Ue (on an Iub\Iur)

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User Plane transport – Configuration

Converter Packet distributor

ET-MFX

Host

Ethernet switch

IpAccessHostEt IpInterface

IpAccessHostEt

IpAccessHostEt

IpAccessHostPool

IurLink\IubLink

0..16

userPlaneTransportOptionuserPlaneIpResourceRef

RNC RBS

IpAccessHostEt

IubuserPlaneTransportOption

userPlaneIpResourceRef

Common defaultRouter0networkPrefixLengthvidvLan

ipAddressipAddress

ipAddress

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TNL QoS

Overview Configuration

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Ericsson Internal IP Transport in WCDMA RAN P6 2007-11-0260

Traffic Maximum Delay Max Delay Variation Max Packet Loss

Real Time ≤ 30 ms (≤ 5 ms) ≤ 10 ms 10-6

HS ≤ 100 ms (≤ 10 ms) 10-4 (10-6)

Non HS BE ≤ 50 ms (≤ 10 ms) ≤ 12 ms 10-4 (10-6)

Delay Characteristics

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Ericsson Internal IP Transport in WCDMA RAN P6 2007-11-0261

QoS collapsing map (example, BW functions)

FACH/RACH/PCH

SRB

Streaming 1 (MBR~GBR)

Conversational

Streaming 2 (MBR>>GBR)

Interactive, THP=1, SI=T

Inter node signalling

Network Synch*

Interactive, THP=1, SI=F

Interactive, THP=2

Interactive, THP=3

O&M

Background

Elastic (non-GBR) 2

Elastic (non-GBR) 3

Elastic (non-GBR) 4

Elastic (non-GBR) 5

Elastic (non-GBR) 6

Inelastic (GBR) 2

Inelastic (GBR) 1

Elastic (non-GBR) 1

Elastic 3

Elastic 4

Elastic 6

Inelastic 2

Elastic

Inelastic

Single classInteractive, DCH

Elastic

Inelastic

PracticalityR

elat

ion

al d

epen

den

cies

# QoS classes shall be defined according to the link with the widest QoS differentiation

Rel

ativ

e w

eig

ht

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Ericsson Internal IP Transport in WCDMA RAN P6 2007-11-0262

DSCP configuration

RNC– Outgoing O&M traffic: Ip::dscp (configurable, default 0, example 10)– Iu and Iur Control Plane:

M3uAssociation::dscp (configurable, default 0, example 10)– Iu PS User Plane: TnsQosClass::dscpEgress (configurable, default 0/18)– Iur User Plane (signalled to DRNC) :

TnlQosClass:dscpEgress and TnlQosClass::dscpIngress (configurable, default 0/18)

– Iub Control Plane: RncFunction::nbapDscp (configurable, default 0, example 10)– Iub User Plane (common channels, signalled to RBS):

RncFunction::cchDscpEgress and RncFunction::cchDscpIngress (configurable, default 0, example 10)

– Iub User Plane (signalled to RBS):TnlQosClass::dscpEgress and TnlQosClass::dscpIngress (configurable, default 0/18)

– NW Synchronozation: hardcoded (46) RBS

– Outgoing O&M traffic: IP::dscp (configurable, default 0, example 10)– Iub Control Plane: NodeBFunction::nbapDscp (configurable, default 0, example 10)– NW Synchronozation: hardcoded (46)

COMINF/OSS-RC– Outgoing O&M traffic (COMINF Servers, OSS-RC Master Server)

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MSC

DSCP configuration

RNC

SGSNMGW

RNC

User Plane

Control Plane

O&M

TnlQosClass::dscpIngressTnlQosClass::dscpEgress

RncFunction::cchDscpEgress

RncFunction::cchDscpIngress

NodeBFunction::dscp

RncFunction::nbapDscp

M3uAssociation::dscp

Ip::dscp

Ip::dscp

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Ericsson Internal IP Transport in WCDMA RAN P6 2007-11-0264

Node Synchronisation

Overview Signalling Algorithm principles

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Node Synchronisation – Overview

Why were the principles changed– Provide common solution independent of Iub transport option

What was changed– Common TrCh setup order in relation to node synchronisation– Node synchronisation algorithm

Handle increased delay variation– Input to (A/E-)DCH and MBMS/FACH frame synchronisation

Improved estimate of transfer delay

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4. NBAP: Common Transport Channel Setup Response

Node Synchronisation – First Common TrCh

3. NBAP: Common Transport Channel Setup Request

CRNC

1. (Audit)

2. (Cell Setup – cell barred)

5. (no scheduling on FACH/PCH)

6. Start node synch initialisation phase

One sample

8. CCH FP (FACH): UL Node Synchronisation (T1, T2, T3)

7. CCH FP (FACH): DL Node Synchronisation (T1)

10. CCH FP (FACH): UL Node ´Synchronisation (T1, T2, T3)

9. CCH FP (FACH): DL Node Synchronisation (T1)

RBS

Initialisation phase

Number of samples defined by

fixedWindowSizeInit

sampleIntervalInit

11.Calculate phase difference and accuracy

12.Define scheduling timing for FACH/PCH

14. NBAP: System Information Update Response (unbar the cell(s))

13. NBAP: System Information Update Request (unbar the cell(s))

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Node Synchronisation – Supervision mode

CRNC

One sample

16. CCH FP (FACH): UL Node Synchronisation (T1, T2, T3)

15. CCH FP (FACH): DL Node Synchronisation (T1)

18. CCH FP (FACH): UL Node Synchronisation (T1, T2, T3)

17. CCH FP (FACH): DL Node Synchronisation (T1)

RBS

Supervision phase, continuously looped

Number of samples defined by

fixedWindowSizeSup

sampleIntervalSup

19.Calculate phase difference and accuracy

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Node Synchronisation – principle

delay

Sliding window (of size 4 in this example )

Windows of size fixedWindowSizeSup, number of windows in sliding set slidingWindowSize

Init state Supervision state

Used for phase difference calculation

Used for accuracy difference calculation

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