Flex Ater

GSM BSS

Flex Ater Feature Parameter Description

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GSM BSS Flex Ater Contents

Issue 01 (2010-06-30) Huawei Proprietary and Confidential Copyright © Huawei Technologies Co., Ltd

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Contents 1 Introduction ................................................................................................................................1-1

1.1 Scope ............................................................................................................................................ 1-1 1.2 Intended Audience ........................................................................................................................ 1-1 1.3 Change History.............................................................................................................................. 1-1

2 Overview of Flex Ater...............................................................................................................2-1

3 Technical Description ..............................................................................................................3-1

4 Parameters .................................................................................................................................4-1

5 Counters......................................................................................................................................5-1

6 Glossary ......................................................................................................................................6-1

7 Reference Documents .............................................................................................................7-1

GSM BSS Flex Ater 1 Introduction


1-1

1 Introduction 1.1 Scope This document describes the application scenario, principle, and resource management regarding Flex Ater (GBFD-116901 Flex Ater).

1.2 Intended Audience This document is intended for:

Personnel who need to understand Flex Ater Personnel who work with Huawei products

1.3 Change History This section provides information on the changes in different document versions.

There are two types of changes, which are defined as follows:

Feature change: refers to the change in the Flex Ater feature of a specific product version. Editorial change: refers to the change in wording or the addition of the information that was not described in the earlier version.

Document Issues The document issues are as follows:

01 (2010-06-30) Draft (2010-03-30)

01 (2010-06-30) This is the first release of GBSS12.0.

Compared with issue draft (2010-03-30) of GBSS12.0, issue 01 (2010-06-30) of GBSS12.0 incorporates the changes described in the following table.

Change Type

Change Description Parameter Change

Feature change

None. None.

Editorial change

Parameters are presented in the form of Parameter ID instead of Parameter Name.

None.

Draft (2010-03-30) This is the draft release of GBSS12.0.

GSM BSS Flex Ater 2 Overview of Flex Ater


2-1

2 Overview of Flex Ater Flex Ater is a function based on which Ater resources are allocated according to the channel type during the call establishment. If TCHFs are allocated on the Um interface, 16 kbit/s timeslots are used on the Ater interface. If TCHHs are allocated on the Um interface, 8 kbit/s timeslots are used on the Ater interface.

This feature effectively reduces the transmission investment on the Ater interface in remote TC networking. When the TCHHs account for 30% in the system, the Flex Ater-capable network saves the Ater transmission resources by up to 15%.

GSM BSS Flex Ater 3 Technical Description


3-1

3 Technical Description The Ater interface is an internal interface between the MPS/EPS and the TCS in the Huawei BSS equipment. With this feature, the Ater resources are classified into 16 kbit/s timeslots and 8 kbit/s timeslots. The BSC allocates the Ater resources according to the channel type during the call establishment. If TCHFs are allocated on the Um interface, 16 kbit/s timeslots are used on the Ater interface. If TCHHs are allocated on the Um interface, 8 kbit/s timeslots are used on the Ater interface. Thus, the Ater resources are fully utilized.

The Ater resources of Huawei BSC are classified into 16 kbit/s Ater resource pool and 8 kbit/s Ater resource pool. If TCHFs are allocated on the Um interface, 16 kbit/s Ater resources are allocated; if TCHHs are allocated on the Um interface, 8 kbit/s Ater resources are allocated. The BSC not only allocates and manages the resources in the pools but also adjusts the allocation of Ater resources between the two pools according to the remains in each pool.Figure 3-1 shows the Flex Ater.

Figure 3-1 Flex Ater

The BSC balances the 16 kbit/s Ater resources and 8 kbit/s Ater resources according to the traffic model. If either type of resources is insufficient, the BSC dynamically adjusts the Ater resources. If the 16 kbit/s timeslots are insufficient, two consecutive 8 kbit/s timeslots are combined into one 16 kbit/s timeslot. Similarly, if the 8 kbit/s timeslots are insufficient, one 16 kbit/s timeslot is divided into two 8 kbit/s timeslots.

In addition, the user can query the number of 16 kbit/s timeslots and the number of 8 kbit/s timeslots and the usage of these timeslots on the Ater interface by running the DSP ATERTS command.

When this feature is enabled and the transmission resources on the Ater interface are insufficient, the BSC preferentially allocates TCHHs to alleviate the congestion, thus increasing the system capacity.

Flex Ater can be enabled by setting Ater8KSw to YES(Yes).

GSM BSS Flex Ater 4 Parameters


4-1

4 Parameters Table 4-1 Parameters Description

Parameter ID

NE MML Description

Ater8KSw BSC6900 SET OTHSOFTPARA(Optional)

Meaning: Whether to enable the BSC to use a 8 kbit/s timeslot to transmit 8 kbit/s data at the Ater interface GUI Value Range: NO(No), YES(Yes) Actual Value Range: NO, YES Unit: None Default Value: YES

GSM BSS Flex Ater 5 Counters


5-1

5 Counters None.

GSM BSS Flex Ater 6 Glossary


6-1

6 Glossary For the acronyms, abbreviations, terms, and definitions, see the Glossary.

GSM BSS Flex Ater 7 Reference Documents


7-1

7 Reference Documents [1] BSC6900 Feature List [2] BSC6900 Optional Feature Description [3] GBSS Reconfiguration Guide [4] BSC6900 GSM Parameter Reference [5] BSC6900 GSM MML Command Reference