Characteristics – O&M

SGSN9810 supports abundant and flexible operation and maintenance.

-3 ways of O&M, LMT ( Local Maintenance Terminal), integrated O&M via iManager M2000, and NMS.

-2 ways of configuration, dynamic and static data configuration.

-Managing SGSN9810 by status query, status control and testing.

-Interface tracing and user tracing functions are combined in the O&M system.

-Real-time performance measurement and management, task management, and custom-built measuring indices.

-Detail alarm and location information, flexible and easy alarm handing.

-2 ways of SGSN9810 system security, authority management and operation log management.

Detail online help documentations.
Features

Physical Ports Capability

Functions – Gb over IP

SGSN9810 support both Gb over FR and Gb over IP.

-In 3GPP, it specify the Network Service (NS) layer can be carried by a frame relay network or an IP network.

-In a Gb over IP network, a NS-VC is defined by  a quadruple consisting of the SGSN IP address, SGSN UDP port number, BSS IP address, and BSS UDP port number. 

Functions – Differential Service

The differential service enables operators to define priorities for subscribers in which resources are controlled  depending on users priorities.

Subscribers are grouped into three classes according to their priorities:

-Special subscribers

-High-end subscribers

-Common subscribers

Operators can offer different services to different subscribers through the following two methods:

-Specifies the threshold of  MM  resources usage to limit the attach and routing area update (RAU) of some subscribers.

-Specifies the threshold of SM resources to limit certain services (PDP contexts) of some subscribers. 

Functions - Handover Strategy Control

The handover strategy control helps operators in distributing traffic and balancing service load between 2G networks and 3G networks.

This function is applicable to the 2G and 3G supportive terminals that are allowed to access 2G/3G network.

When a terminal is in a 3G network,. The handover strategies include:

-Handover to 2G network recommended

-Handover to 2G network not recommended

-Stay in the 3G network

When a terminal is in a 2G network,. The handover strategies include:

-Handover to 3G network recommended

-Handover to 3G network not recommended

-Stay in the 2G network

SGSN Functions - SIGTRAN

The Signaling Transport (SIGTRAN) protocol stack is defined by (IETF) to enables an IP network to transfer the signals of a traditional switched circuit network (SCN). 

Functionally, the SIGTRAN protocol stack is classified in the following two types:

[General signaling transmission protocols : The Stream Control Transmission Protocol (SCTP)

− which realize the reliable transmission of SS7 signaling messages on an IP network.

[SS7 signaling adaptation protocols : M2UA/M3UA/ IUA/V5UA

−which are designed to adapt the various signaling protocols used by the SCN. 

Functions – NTP Client

NTP (Network Time Protocol)

NTP is a TCP/IP protocol used to broadcast the precise time in the entire IP network. The transmission itself is based on UDP

-The RFC1305 standard defines the algorithm used by the NTP, to ensure the accuracy of the clock synchronization.

The Huawei SGSN9810 supports setting the remote server as the local time server. The local peer works in client mode.

Functions - NACC (Network Assisted Cell Change)

When the MS initiates a cell reselection between the BSCs during the data transmission, NACC function reduces the time delay of the cell reselection greatly and improves the QoS.

 Generally, it maintains the service interruption within 300 ms to 700 ms, rather than 1 second or 2 seconds without applying this function.

To assist fast cell reselection, the MS needs to know the system information of the target cell before cell change.

[If the target cell belongs to another BSC/RNC, In this case, the system information is included in the RAN-INFORMATION message, and then sent to the target BSC/RNC by SGSN.

SGSN Functions - MVNO

MVNO: Mobile Virtual Network Operator

[MVNO can use another Mobile Network Operator (MNO) to provide its services 

[MVNO enables multiple operators invest on the sharing network, or rent other operator’s network, to lower the investment and risk.

[The network resource authorized by the MNO can be RAN, partial CN and the whole CN.