User's Manual

Open Information
DESCRIPTION 4 ( 25 )
ERA/RGN/PD Jennie Bergström 5/1551-HRB 105 102/1 Uen
ERA/RKF/TU Carl Helander 2003-01-28 C
Prepared (also subject responsible if other) No
Approved Checked Date Rev Reference
E
RAN consists of the following parts:
− RNC
The RNC interacts with the CN as well as the RBSs and manages
radio links. The RNC also controls mobility and optimizes the radio
network resources.
A single RNC can handle one or more RBSs, and an RNC can work
with other RNCs to increase capacity.
For detailed information regarding the RNC, please refer to
Node
Description, RNC 3810, 6/1551–AXD10503/1.
− RBS
The RBS’s main function is to maintain radio links to UE.
A detailed overview of the RBS 3202 is given in the next section
entitled
RBS Overview .
• RANOS
RANOS is one of the network management systems the operator can use.
RANOS handles O&M tasks such as: alarm handling, configuration and
performance monitoring.
It is possible to integrate RAN with existing network management systems.
3 RBS Overview
The RBS provides radio resources and handles radio transmission and
reception in one or more cells to and from the UE.
3.1 Main Functions
The RBS functionality is divided into traffic and O&M functions.
Traffic related functions include:
• Communicating with the RNC and UE
• Handling cells, transport channels, and ATM links
O&M functions are:
• Ensuring the system becomes, and remains, operational
• Handling equipment malfunction