RN28176EN14GLN0 BSS S14 GPRS/EGPRS Integration in BSC RN28176EN14GLA0

RN28176EN14GLN0 BSS S14 GPRS/EGPRS Integration in BSC

RN28176EN14GLA0 Objectives After studying this module participant should be able to: Create Gb Interface within the BSC Enable GPRS on cell level Enable EGPRS on cell level Handle dynamic Abis pools

RN28176EN14GLA0 Gb over Frame Relay Interface Configuration

RN28176EN14GLA0 Steps to Enable GPRS in BSC (FR) Connect the Gb interface ET Create and Activate Gb Interface Activating GPRS/EGPRS on a cell level End Start

RN28176EN14GLA0 Connect the Gb interface ET

RN28176EN14GLA0 Identify Connected ET-Interface < ZWUP:32&40&96; LOADING PROGRAM VERSION 18.10-0 EXECUTION STARTED BSC3i BSC11 2005-04-21 10:03:36 PCM COMP PROC INFO_1 INFO_2 INFO_3 ADD_INFO PAGE 1 32 BCSU SC7PRB ETPCM - - VIRTUAL_PCMS 33H 01B1H 0000H 0000H 0100H 1280 40 BCSU ERATES ETPCM - - 33H 010AH 0000H 0000H 0000H 96 BCSU ABIPRB ETPCM - - VIRTUAL_PCMS 30H 01BFH 0000H 0000H 0000H 1792 - 1799 TOTAL OF 3 PCM CIRCUITS

RN28176EN14GLA0 Transmission Solutions of Gb Interface (FR) Transmission Network BSC TCSM MSC Frame Relay Network SGSN ET ET ET ET ET ET

RN28176EN14GLA0 Steps to Integrate and Activate the Gb IF (FR) Create Frame Relay bearer channel Modify local Bearer Channel signalling parameter Create Network Service Virtual Connection End Start Change State of Network Service Virtual Connection

RN28176EN14GLA0 Gb-Interface Protocol (FR) SGSN BSC L1bis BSSGP LLC SNDCP FR Network Service control part Gb-IF Network Service Subnetwork Dependent Convergence Protocol Layer 1 physical connection Logical Link Control BSS GPRS protocol layer Frame Relay Network Service control part Network Service control part

RN28176EN14GLA0 Gb-Interface Identifier (FR)

RN28176EN14GLA0 Capacity of NS-VCI Given by CIR (Committed Information Rate) Could be discarded in case of congestion 1 2 3 4 0 TSL PCM-frame Bearer Channel CIRmin = 16 kBit/s Configurable in steps of 16 kBit/s Range of CIR can exceed TLS borders Sum of CIR capacity of bearer channel

RN28176EN14GLN0 Gb Interface ( Over FR) BSS2 BSS1

RN28176EN14GLN0 Exercise: Read out Gb IF configuration (FR)

RN28176EN14GLA0 Gb over IP Considerations Gb over IP license must be installed and activated In dynamic IP configurations the SGSN side must be created first In static IP configurations it does not matter which end (BSC/SGSN) is created first Static configuration can use only logical IP addresses Both IPv4 and IPv6 are supported in the NSN implementation of Gb over IP DNS names can be used instead of IP addresses if a DNS server address is specified in the BSC

RN28176EN14GLA0 Gb over IP interface configuration (BSC2i)

RN28176EN14GLA0 Gb over IP interface configuration (BSC3i)

RN28176EN14GLA0 General Steps to Create Gb Over IP Interrogate/Activate PCU/Gb over IP licenses Interrogating/Creating hardware for Gb IP Integrate the Gb over IP interface Start End

RN28176EN14GLA0 LAN Switch IP Network Point to Point Ethernet 2 1 SGSN BSC Transmission Solutions of Gb Interface (IP) LAN Switch LAN Switch LAN Switch

RN28176EN14GLA0 Interrogate/Activate PCU/Gb IP licences Install the licence Set licence expiration warning time Check that the installation succeeded Activate features Start Transfer & store the new licence file to the licence directory End Inactivate ramped-down features Remove the expired licence no yes no yes no yes

RN28176EN14GLA0 Change BCSU to SE-NH Interrogating/Creating Hardware for Gb IP Start Create PCU card Connect PCU card Change BCSU state to WO-EX End Change BCSU to SE-NH yes yes no no

RN28176EN14GLA0 Integrate the Gb over IP interface End Create network interface for your PCU Create static routes Check the IP configuration (optional) Start Create the NS-VC with a dynamic IP configuration Create the NS-VC with a static IP configuration Check the creation and state of the NS-VC or

RN28176EN14GLA0 Static Gb IP configuration Configuration parameters are configured to both ends statically and not transferred over Gb. Operator creates all NS-VCs with fixed remote IP endpoints: address, port number, signaling weight and data weight. BSC software can decide that static configuration is used, if PRE parameter is set to No (N) in creation of first NS-VC in NSE. NS-VC configurations on both sides (BSS and SGSN) must match

RN28176EN14GLA0 Static Gb IP Configuration PCU 4 (BCSU 2) NSEI:13731 PSEI:100 Logical IP address: 10.2.77.82 Port number:33301 Remote IP address: 10.2.10.15 Remote port number: 50001 PAPU 5 NSEI:13731 PSEI=100 Logical Ip address: 10.2.10.15 Port numebr:50001 Remote IP address: 10.2.77.82 Remote port number: 33301 NS-VC 7301 PRE : N RDW : 10 RSW : 5 BSC08 SGSN01 RDW : 10 RSW : 5

RN28176EN14GLA0 Gb IP NS-VC static configuration (BSC) FXI:; BSC3i BSC31-LAB NETWORK SERVICE VIRTUAL LINK PARAMETERS: EQOS ENABLED PSE-00 NSE-01755 NS-VL-05500 COMMAND EXECUTED

RN28176EN14GLA0 Gb IP NS-VC static configuration (BSC) FXI:BCSU=0,PCU=3:; BSC3i BSC31-LAB NETWORK SERVICE VIRTUAL LINK PARAMETERS: EQOS ENABLED PSE-00 NSE-01755 ================ LOCAL UDP PORT: 33000 NSE PFC MODE: ON STATIC CONFIGURED NS-VL(S): OP REMOTE REMOTE ID NAME STATE RDW RSW IP ADDRESS UDP PORT ----- ---------- ----- --- --- --------------- -------- 05500 SGSN1 WO-EX 010 005 10.2.77.220 50000 ID REMOTE HOST NAME ----- ---------------- 05500 COMMAND EXECUTED

RN28176EN14GLA0 Dynamic Gb IP Configuration Configuration parameters are transferred over Gb in the initialization phase. Only one address and port pair of the remote end SGSN is needed to establish NS-VC configuration on Gb. These parameters are attributes of the preconfigured SGSN IP endpoint. BSC software can decide that dynamic configuration is used, if PRE parameter is set to Yes (Y) when creating the first NS-VC in NSE.

RN28176EN14GLA0 Dynamic Gb IP Configuration PCU 4 (BCSU 2) NSEI:13731 PSEI:100 IP address: 10.2.77.82 Port number:33301 Remote IP address: 10.2.10.15 Remote port number: 50001 PAPU 5 NSEI:13731 PSEI:100 IP address: 10.2.10.15 Port numebr:50001 Remote IP address: 10.2.77.82 Remote port number: 33301 NS-VC 7301 PRE:Y BSC08 SGSN01 RDW: 10 RSW: 5 RDW: 10 RSW: 5

RN28176EN14GLA0 Dynamic Gb IP configuration BSC BSC08 NETWORK SERVICE VIRTUAL CONNECTION CREATION NSEI-13731 BCSU-2 PCU-4 PRE CONFIGURED NS-VC: NS-VC LOCAL REMOTE REMOTE ID NAME UDP PORT IP ADDRESS UDP PORT ----- ---------- -------- --------------- -------- 07301 GBOVERIP 50000 10.2.10.15 50001 REMOTE HOST NAME: /*** WARNING ***/ /*** BSC DB AND PCU CONFIGURED OK BUT NO RESPONSE RECEIVED FROM SGSN, STILL TRYING ***/ COMMAND EXECUTED

RN28176EN14GLA0 Gb Interface Protocol (IP) SGSN BSC LLC SNDCP Gb IP-IF Subnetwork Dependent Convergence Protocol Logical Link Control BSS GPRS protocol layer Network Service control part UDP Network Service control part L2 L1 UDP IP Network Service control part L2 L1 BSSGP Physical layer Layer 1 physical connection User Datagram Protocol layer Layer 2 data link layer IP address routing IP

RN28176EN14GLA0 Gb Interface Identifier (IP) BVCI LPNBR NSEI NS-VL BSSGP UDP L2 Network Service control part BSC BSSGP Virtual Connection Identifier Network Service Entity Network Service Virtual Connection Identifier Local User Datagram Protocol Port Number Remote User Datagram Protocl Port Number IP L1 RPNBR RIP Remote IP address RHOST Remote Host Name (If DNS exists) PSEI Packet Network Service Entity

RN28176EN14GLA0 PCU2 PCU1 PCU3 BTS_3 BTS_6 RA 1 BTS_8 BTS_22 RA 2 LA NSEI_1 NSEI_2 NSEI_3 NSEI_7 PAPU1 PAPU2 PAPU3 SGSN NSEI_7 NSEI_3 NSEI_1 NSEI_2 BVCI_3 BVCI_0 BVCI_0 BVCI_6 BVCI_8 BVCI_0 BVCI_22 BVCI_22 BVCI_0 BVCI_3 BVCI_0 UDP50001 UDP50002 UDP50003 UDP50004 UDP50005 BVCI_0 BVCI_6 UDP50006 UDP50007 UDP50008 BVCI_8 BVCI_0 BVCI_22 BVCI_22 BVCI_0 UDP50009 UDP50010 Data Signal Data & Signal BSS2 BSS1 UDP33301 UDP33302 UDP33303 UDP33304 UDP33305 UDP33306 UDP33307 UDP33308 UDP33301 UDP33302 PCU 1 IP:10.2.77.82 IP:10.2.77.83 IP:10.2.77.84 IP:10.2.77.113 IP:10.2.10.10 IP:10.2.10.11 IP:10.2.10.12 IP Network Gb Interface(IP)

RN28176EN14GLA0 Exercise: Read out Gb IF configuration (IP) NSEI______ PSEI_____ UDP__________ PAPU______ BCSU_____ PCU____ IP_______________ RPN____________ LPN____________ RDW___________ RSW___________ PRE ___________ RIP_____________ Gateway IP_____ Gateway IP_____ SGSN_____ BSC_____ NSEI______ PSEI______ UDP__________ IP_______________ RPN____________ LPN____________ RDW___________ RSW___________ PRE ___________ RIP_____________ SGSN BSC

RN28176EN14GLA0 Exercise: Create Static Gb IP NS-VC __________ PRE:__ RDW: __ RSW: __ BSC___ SGSN__ RDW: __ RSW: __ PCU___ (BCSU____) NSEI:___________ PSEI:___________ IP address: _______________ Port number:____ Remote port number: ________________ PAPU ____ NSEI:________ PSEI:________ IP address: _________________ Port numebr:______ Remote port number: _________________ PCU IP gw __________ PAPU IP gw __________

RN28176EN14GLA0 Exercise: Create Static Gb IP NS-VC __________ PRE:__ RDW: __ RSW: __ BSC___ SGSN__ RDW: __ RSW: __ PCU___ (BCSU____) NSEI:___________ PSEI:___________ IP address: _______________ Port number:____ Remote port number: ________________ PAPU ____ NSEI:___________ PSEI:___________ IP address: _________________ Port numebr:______ Remote port number: _________________ PCU IP gw __________ PAPU IP gw __________

RN28176EN14GLA0 Exercise: Create Dynamic Gb IP PCU___ (BCSU____) NSEI:___________ PSEI:___________ IP address: _______________ Port number:____ Remote port number: ________________ PAPU ____ NSEI:___________ PSEI:___________ IP address: _________________ Port numebr:______ Remote port number: _________________ NS-VC_________ PRE:_____ BSC___ SGSN__ RDW: ____ RSW: ____ RDW: ____ RSW: ____ PAPU IP gw __________ PCU IP gw __________

RN28176EN14GLA0 Steps to activate GPRS on a cell level Check existent Routing Areas Create Routing Area Check Radio Network Parameter End Start Enable GPRS on cell level

RN28176EN14GLA0 RAI = MCC+MNC+LAC+RAC Rules: Routing Area Location Area Routing Area Cell PCU 1 PCU 0 BTS BTS RA 1 BTS BTS RA 2 SGSN BTS BTS RA n LA BTS BSC PCU n Location Area Routing Area Cell Routing Area

RN28176EN14GLA0 Territory Method in BSC

RN28176EN14GLA0 GPRS Capable Traffic Channel Within a cell, all the Full Rate and Dual Rate traffic channels are GPRS capable. GPRS territory is a set of consecutive TSLs, excluding TSLs that are not capable of full rate traffic non-TCH channels (BCCH, SDCCH) permanent half rate TSLs blocked TSLs TSL0 when BB Hopping is used transparent HSCSD calls.

RN28176EN14GLA0 BCSU=___ NSEI__________ PSEI__________ BSC BCSU=___ NSEI__________ PSEI__________ MCC= _____ MNC= _____ BCSU=_____ PCU index= _____ BCSU=_____ PCU index= _____ Exercise: Read out GPRS RNW configuration

RN28176EN14GLA0 Exercise: Create GPRS in BSS (1/2) BCSU=_____ PCU index= _____ BCSU=_____ PCU index= _____

RN28176EN14GLA0 Steps to activate EGPRS on a cell level Creating dynamic Abis pool Creating a TRX which uses the dynamic Abis pool End Start Enable EGRPS on the BTS Unlock BTS Creating dynamic Abis pool Start

RN28176EN14GLA0 Dynamic Abis Allocation Introduction GSM/GPRS radio timeslot data can be fitted into one 16 kbit/s sub timeslot in Abis-if EDGE introduces data throughputs up to ca. 60 kbit/s over air  up to 5*16 kbit/s sub timeslots needed over Abis/radio timeslot BTS internal traffic can not be fit into one D-bus (2 Mbit/s)  UltraSite has four D-buses Abis capacity needs to be expanded (even up to 4 times higher) Dynamic Abis Allocation 1*16 kbit/s "Master" as fixed/radio timeslot 1 …4*16 kbit/s "Slaves" dynamically as per needed/radio timeslot Background

RN28176EN14GLA0 PCU frame types PCU data frame used when TRX not in EDGE mode only able to carry CS-1 and CS-2 PCU master data frame used when TRX is attached to Dynamic Abis and Edge or/CS3 CS4 is enabled in BTS carries CS-1 or MCS-1 on its own and CS-2...CS-4 and MCS-2...MCS-9 with the help of slave frame(s) includes pointers to the slave frames PCU slave data frame carries additional data that does not fit in PCU master data frames PCU random access frame PCU synchronisation frame Dynamic Abis solution

RN28176EN14GLA0 Fixed channels and EDAP For each GPRS radio timeslot on each EDGE TRX, one fixed 16-kbps channel is allocated on the Abis for the transfer for PCU master data frames. PCU slave data frames are allocated in a common pool, the EDAP (EDGE Dynamic Abis Pool). 12 PCM timeslots as the maximum size of EDAP. A master channel and its slave channels and therefore the entire EDAP must be on the same Abis PCM. Dynamic Abis solution

RN28176EN14GLA0 Exercise: Activate EGPRS on a cell level

RN28176EN14GLA0 GPRS Coding Schemes CS1 & CS2 Implemented in ALL BTS without HW change. CS3 & CS4 Will not fit in normal 16kbit/s Abis TRAU frame. BSC S11.5 SW for PCU card ; S13 SW for PCU2 card, Dynamic Abis, and Edge HW (TRX). Coding Scheme CS1 CS2 CS3 CS4 Data Rate per TSL (kbit/s) 9.05 13.4 15.6 21.4 More Data = Less Error Correction

RN28176EN14GLA0 Functional Description When CS3-CS4 option is on, and the Dynamic Abis pool and (E)GPRS territories are created then all GPRS coding schemes (CS1-CS4) are available for data transfer. The current GPRS Link Adaptation algorithm in the PCU/RLC is replaced with a new one, which covers also CS3 and CS4. A data block of CS2-CS4 is transferred in one PCU master Data Frame and one PCU Slave Data Frame through the Abis interface. CS1 data block fits in one PCU Master Data Frame.