User's Manual

Open Information

DESCRIPTION 12 ( 19 )

ERA/RGN/PD Rikard Schönbeck 5/1551-HRB 105 102/1 Uen

ERA/RGG/TOC Jan Lundkvist 2002-05-28 B

Prepared (also subject responsible if other) No

Approved Checked Date Rev Reference

The common platform layer isolates the application program layer from the

implementation details of the processor and ATM platform. This makes it

possible to change the processor and ATM parts without having to modify the

application program.

A standard web browser is used for RBS management through the element

manager. The platform layer supports the Element Manager (EM) by providing

common platform support functions such as a graphical interface, Java applet

communication and online context sensitive help.

Traffic Control View

This view hides the specific RBS hardware from the actual services supplied

by the RBS. This is done to encapsulate the parts of the system that change

when hardware is modified. Modification normally takes place when an RBS

is updated (for example, capacity increase) or when different types of RBSs

are supported.

There are four layers in the traffic control view:

• Traffic service layer that carries out the application program procedures

using logical resources, for example, channels.

• Logical resource layer that provides logical resources for the traffic service

layer. It transforms operations on logical resources into operations on

devices.

• Equipment layer that makes functionality hardware independent by

providing devices to logical resource layer.

• Hardware layer that hides the hardware details.

Management View

The management view covers the application program and the common

platform. It hides implementation details from the user interface.

There are three layers in the management view:

• The presentation layer holds the GUI, which consists of, for example, HTML

pages and Java applets. They include, for example, workflow-oriented

forms for system configuration and support for reading and presenting an

event log. The presentation layer is implemented using web pages and

applets, which can be viewed using a standard web browser.

• The management adaptation layer represents objects visible through the

Mub management interface. These objects contain attributes, that can

be read or written, and methods for operations on these objects through

the standard web browser.

• The resource layer hides the lower level implementation details of the

objects, which reduces the impact of changes.