zgo-03!05!008 enhanced multi-timeslot support fg 20101030

Operator Logo

ZGO-03-05-008 Enhanced Multi-timeslot Support

Feature Guide


ZTE Confidential Proprietary © 2010 ZTE CORPORATION. All rights reserved. I


Version Date Author Approved By Remarks

V1.00 2010-10-30 Not open to the Third Party

© 2010 ZTE Corporation. All rights reserved.

ZTE CONFIDENTIAL: This document contains proprietary information of ZTE and is not to be disclosed or used without the prior written permission of ZTE.

Due to update and improvement of ZTE products and technologies, information in this document is subjected to change without notice.


ZTE Confidential Proprietary © 2010 ZTE CORPORATION. All rights reserved. II

TABLE OF CONTENTS

1 Feature Property ............................................................................................. 1

2 Overview ......................................................................................................... 1

2.1 Feature Introduction .......................................................................................... 1

2.2 Relation with Other Features ............................................................................ 2

3 Technical Description .................................................................................... 2

3.1 Multi-timeslot Capability Classes of MS ............................................................ 2

3.2 HMC Field ........................................................................................................ 4

3.3 Additional Timeslot Allocation Combination ...................................................... 5

4 Parameters and Configurations ..................................................................... 6

5 Related Counters & Alarms ........................................................................... 7

5.1 Related Counters .............................................................................................. 7

5.2 Related Alarms ................................................................................................. 7

6 Engineering Guide .......................................................................................... 7

6.1 Application Scenarios ....................................................................................... 7

6.2 Configuration Description.................................................................................. 7

6.3 Network Influence ............................................................................................. 7

7 Abbreviation .................................................................................................... 8

8 Reference Document ...................................................................................... 8


ZTE Confidential Proprietary © 2010 ZTE CORPORATION. All rights reserved. III

FIGURES

Figure 3-1 Examples of timeslot allocation combination (1) .................................................. 5

Figure 3-2 Examples of timeslot allocation combination (2) .................................................. 6

TABLES

Table 3-1 Multi-timeslot capability classes supported by MS ................................................ 2


ZTE Confidential Proprietary © 2010 ZTE CORPORATION. All rights reserved. 1

1 Feature Property

iBSC Version: [ZXG10 iBSC V6.20]

BTS Version: [Irrelevant with BTS hardware platform]

Property: [Optional]

Related Network Elements and Requirements:

NE Name Related or Not Special Requirements

MS √

BTS √

BSC √

MSC -

MGW -

SGSN √

GGSN -

HLR -

Dependent Function: [None]

Exclusive Function: [None]

Note: [None]

2 Overview

2.1 Feature Introduction

The enhanced multi-timeslot class support function means iBSC can provide PS service

for the MS with 30-33 multi-timeslot capabilities on the basis of already supporting 1-12

multi-timeslot classes. This function requires the MS to support HMC (High Multi-timeslot

Capability).



This function allows a maximum of five downlink timeslots to be used by one MS. As a

result, the bandwidth is increased to five timeslots from the original maximum of four

timeslots, thus increasing the throughput by 25%.

Classes 30-33 allow the total number of uplink and downlink timeslots to be six. That is to

say, if five timeslots are used in downlink, only one timeslot can be used in uplink.

2.2 Relation with Other Features

Feature related with enhanced multi-timeslot capability involves extended dynamic

allocation.

Extended dynamic allocation should be switched on when enhanced multi-timeslot

capability allocates more uplink timeslots than downlink timeslots. Refer to

ZGO-03-02-007 Extended Dynamic Allocation for extended dynamic allocation.

3 Technical Description

3.1 Multi-timeslot Capability Classes of MS

When MS supports this multi-timeslot function, there are a few multi-timeslot classes as

follows:

Table 3-1 Multi-timeslot capability classes supported by MS

Multi-timeslot Class Maximum Number of Timeslots

Rx Tx Sum

1 1 1 2

2 2 1 3

3 2 2 3

4 3 1 4

5 2 2 4

6 3 2 4



7 3 3 4

8 4 1 5

9 3 2 5

10 4 2 5

11 4 3 5

12 4 4 5

13 3 3 NA

14 4 4 NA

15 5 5 NA

16 6 6 NA

17 7 7 NA

18 8 8 NA

19 6 2 NA

20 6 3 NA

21 6 4 NA

22 6 4 NA

23 6 6 NA

24 8 2 NA

25 8 3 NA

26 8 4 NA

27 8 4 NA

28 8 6 NA

29 8 8 NA

30 5 1 6

31 5 2 6

32 5 3 6

33 5 4 6

34 5 5 6

35 5 1 6

36 5 2 6

37 5 3 6

38 5 4 6



39 5 5 6

40 6 1 7

41 6 2 7

42 6 3 7

43 6 4 7

44 6 5 7

45 6 6 7

In this table:

Rx:

”Rx” indicates the maximum number of received timeslots (one TDMA frame) available to

MS. According to the service class that MS supports, MS must support an integral

number of all received slots from 0 to Rx.

Tx:

“Tx” indicates the maximum number of transmitted timeslots (one TDMA frame) available

to MS. According to the service class that MS supports, MS must support an integral

number of all transmitted timeslots from 0 to Tx.

Sum:

“Sum” means the total number of uplink and downlink timeslots (one TDMA frame) used

by MS. MS must support combination of all integral values of d <= Rx and u <= Tx TS.

According to the service class that MS supports, the formula 1 <= d + u <= Sum must be

realized.

3.2 HMC Field

As GPRS/EDGE Multi-timeslot Capability has only five bits (0~31), HMC (30~45) needs

additional fields to represent. The new HMC fields and the original GPRS/EDGE

Multi-timeslot Capability fields are used for joint identification. HMC has two bits.



If MS Radio Access capability contains no HMC field, it means MS does not support

HMC.

3.3 Additional Timeslot Allocation Combination

As shown in table 1, the maximum number of downlink timeslots RX permitted by

multi-timeslot classes 30-33 is 5, and the sum of uplink and downlink timeslots is 6. The

following provides several possible timeslot allocation combinations of the five new

timeslot classes. Figure 1 demonstrates the combinations of 5 (downlink) + 1 (uplink), 4 +

2, and 4 + 1. Figure 2 demonstrates combinations of 1 (downlink) + 4 (uplink) and 2 + 4.

Use of this combination needs extended dynamic allocation function.

Figure 3-1 Examples of timeslot allocation combination (1)

RX 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7

0 1 2 3 4 5 6 7TX

CLASS 30/31/32/33

RX 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7

0 1 2 3 4 5 6 7TX

CLASS 31/32/33



RX 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7

0 1 2 3 4 5 6 7TX

CLASS 30/31/32/33

Figure 3-2 Examples of timeslot allocation combination (2)

CLASS 33

RX 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7

0 1 2 3 4 5 6 7TX

CLASS 33

RX 0 1 2 3 4 5 6 7 0 1 2 3 4 5 6 7

0 1 2 3 4 5 6 7TX

4 Parameters and Configurations

There is no configuration parameter for this feature.



5 Related Counters & Alarms

5.1 Related Counters

None.

5.2 Related Alarms

None.

6 Engineering Guide

6.1 Application Scenarios

This feature is designed for cell phones that support HMC（High Multislot Capability）.

This design enables the bandwidth to expand from 4 timeslots to 5 timeslots when

downloading, increasing throughput by 25% and enhancing cell phone download rate.

6.2 Configuration Description

This feature does not involve iBSC and BTS hardware configuration adjustment.

Background configuration is not needed, so there is no configuration parameter.

6.3 Network Influence

After the terminal that supports enhanced multislot capability adopts EDA, the uplink rate

will be enhanced to some extend, improving user experience.

This feature will impose no impact on iBSC capacity or BTS capacity.



7 Abbreviation

Abbreviations Full Characteristics

BSC Base Station Controller

BSS Base Station System

BTS Base Transceiver Station

EDGE Enhanced Data rates for Global Evolution

GPRS General Packet Radio Service

MS Mobile Station

PS Packet Switch

TDMA Time Division Multiplex Access

8 Reference Document

[None]

zgo-03!05!008 enhanced multi-timeslot support fg 20101030

Documents