PPT ON TRANSMISSION SYSTEM

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Transmission System  Presentation Transcript

1.Transmission System

2.TOPICS Transmission Definition Transmission Nodes Transmission Tables Transmission Node Interfaces Transmission Overview of the Wireless IP based TDM Transmission System for GSM

3.Transmission – Definition Transmission is the path between two nodes of a network that a data communication follows. The purpose of Transmission System in VNL network is to provide radio network connectivity between BSC and remote BTS. VNL Transmission System receives 2 E1 from BSC and carries it to the BTS without compromising the characteristics of Physical E1

4.Transmission – Nodes Complete VNL Transmission System comprises of TDM over IP Transmission System TU:- TU is TDM over IP physical entity, the part of TDM over IP Transmission System, responsible for TDM to IP conversion and other functions aspects of IP networks Wireless IP Transmission System RU :- RU is Radio unit , the entry point of Wireless IP Transmission system which receives IP traffic through Ethernet cable and transmits on wireless. It also receives wireless traffic and provide outside through Ethernet cable.

5.TDN :- Transmission Distribution node , the which is responsible for long distance backhauling as Multi-hop system as well as creating short distance wireless distribution system providing backhaul to larger number of wireless IP Traffic nodes OMC-T:- OMC of the Transmission System (includes OMC for TDM over IP Transmission System and OMC of Wireless IP Transmission System) which is responsible for Fault ,Configuration,Accounting , Performance and Security.

6.Transmission Node Interfaces

7.Salient features of (TU-BSC and TU-BTS) TU BSC provides 2 full E1 and Fractional E1 connectivity towards BTS i.e.: 2 E1 are available to connect BSC TU E1 can be configured to Line type “ Frame with CRC” and “Frame with no CRC “ TU BSC extracts clock from BSC in real GSM environment and TU-BTS extract clock from internal E1 TU provides payload size ( Number of Frames per Packet ) varying from 1 to 99 TU provides jitter buffer * value varying from 1ms to 25 ms TU Software can be upgraded directly through OMC-T and WEB GUI TU alarms comes directly on OMC-T and WEB GUI * Jitter Buffer is used to ensure continuous transmission of Packets at Receiver end by queuing the packet switch network.

8.Transmission Node Interfaces Contd.. TU can be revert back to Factory Default setting i.e. : Default configuration TU can be rebooted remotely TU supports Diagnostics test like Local and Remote Loop back for maintenance purpose Automatic Discovery and Registration of TU at OMC-T TU provides statistics for debugging purpose.

9.TU TABLES

10.TU TABLES Contd..

11.Transmission Node Interfaces The RU consists of one processor board with one 2.4 GHz mini-PCI radio module or with one 5.8 GHz mini-PCI radio module. The RU is supplied by 24 V PoE. The RU connects to local BTS or to BSC by means of Ethernet.

12.Transmission Node Interfaces

13.Transmission Node Interfaces RU Software can be upgraded directly through OMC-T and WEB GUI RU alarms comes directly on OMC-T and WEB GUI RU can be revert back to Factory Default setting i.e. : Default configuration Retransmission is supported in RU Automatic Discovery and Registration of TU at OMC-T RU supports simultaneously traffic of E1 and Ethernet packets RU provides statistics for debugging purpose.

14.RU TABLES The following tables have been introduced for the RU

15.RU TABLES Contd..

16.RU TABLES Contd..

17.DEPLOYMENT: