4.4.3.2 GU_ZTE UMTS OPEX Saving Features Description

ZTE UMTS OPEX Saving Features Description


ZTE Confidential Proprietary © 2011 ZTE Corporation. All rights reserved. I


Version Date Author Approved By Remarks

© 2011 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.


II © 2011 ZTE Corporation. All rights reserved. ZTE Confidential Proprietary

TABLE OF CONTENTS

1 OPEX Saving Features ................................................................................... 1 1.1 ZWF21-40-006 Dynamic Power Track .............................................................. 1 1.2 ZWF21-40-008 Multi-Carrier Dynamic Power Sharing ...................................... 2 1.3 ZWF21-40-023 AISG Interface ......................................................................... 4 1.4 ZWF21-42-001 Flexible Frequency Configuration ............................................. 6

2 Abbreviation .................................................................................................... 6


ZTE Confidential Proprietary © 2011 ZTE Corporation. All rights reserved. III

FIGURES

Figure 2-15 PA Efficiency with D-PT Technology ................................................................. 2

Figure 2-18 Electrical Tilt Antenna System ........................................................................... 5

TABLES


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

1 OPEX Saving Features

1.1 ZWF21-40-006 Dynamic Power Track

Benefits

This feature is used to improve power amplifier (PA) efficiency, reduce OPEX of base

station and enhance equipment stability.

Description

The efficiency of PA is usually evaluated on the condition when output power is close to

the maximum value. However, the load of base station varies greatly with time. For

example, in the rush hours of daytime, transmitting power of base station is close to the

maximum to meet the traffic of telecommunication, and the efficiency of PA is the

highest. Late at night, the traffic will drop close to zero so the efficiency of PA is low. For

improving PA efficiency on the condition of low traffic in order to reduce the total power

consumption of base station, ZTE Node B equipment supports D-PT (Dynamic Power

Track) technology:

Track the transmitting power of antenna and map the output power of PA

Check the table with the output power of PA to find the drain voltage needed

Map the drain voltage to state machine of power module and then choose

appropriate output voltage of power module to meet traffic load


2 © 2011 ZTE Corporation. All rights reserved. ZTE Confidential Proprietary

Figure 1-1 PA Efficiency with D-PT Technology

As shown in 错误！未找到引用源。12, with D-PT technology, it is obvious that gain of

PA efficiency can be achieved to save operation cost and enhance equipment stability.

Introduced Version

V408R2

Enhanced Function

No

1.2 ZWF21-40-008 Multi-Carrier Dynamic Power

Sharing

Benefits

This function, which is applicable to the situation of uneven load and fast change

between each carrier in multi-carrier instance, can increases utilization of power

amplifier and increase downlink capacity.

Description

5 10 15 20 25 30 35 40 45 50 555

10

15

20

25

30

35

output power(W)

PA

eff

icie

ncy(

%)

PA efficiency & output power

fixed voltage PA efficiency

adjusted voltage PA efficiency



The principle of multi-carrier dynamic power sharing is described as follows. In dual-

carrier WCDMA system, the cell serving R99 has some remaining carrier power which

will be applied to HSDPA scheduling in another carrier. In this instance, the cell

throughput of another carrier will be increased to improve the system capacity. Power

shared ratio can be configured by OMC.

Multi-carrier dynamic power sharing includes two scenarios:

Scene a: R99+ (R99+DPA). In this instance, the DPA cells can use the

remaining sharing power from R99 cell;

Scene b: (R99+DPA) + (R99+DPA). In this instance, the DPA cells can use

the remaining sharing power with each other.

In order to implement the sharing between each scheduler, the logic entity of the super

DPA scheduler which is independent of the present DPA scheduler to distribute the

sharing power will be introduced. Node B will notify the maximum transmitting power of

the local cell and the local cell group, and the relationship between the local cell and the

local cell group to RNC by auditing response. According to the acquired information and

Node B measurement information, RNC will execute the power admission control to

Node B.

Additionally, the power configuration principle of three-carrier power sharing is described

in the followings:

Keep identical with dual-carrier power configuration algorithm, namely the

scheduler reports -1,0,1 respectively and the super scheduler distributes the

power according to the report.

During the distribution, the sum of three carriers’ power keeps unchanged.

Any distribution will always make the sum of three carriers’ power equal to the

initial value.

The power distribution principle is the same as the one of dual-carrier. The big

step of step_1 (1w) extracted by the carrier that reports -1 and the small step

of step _2 (0.5w) extracted by the carrier that reports 0 will be used for the

carrier that reports 1.



Introduced Version

U9.2

Enhanced Function

No

1.3 ZWF21-40-023 AISG Interface

Benefits

This function supports adjusting the down tilt angle through the remote or local control

software. Compared with the traditional antenna system, it has many advantages:

Adjust the down tilt angle of the electrical tilt antenna without switching off the

power. Detect the down tilt angle real time.

High-accuracy tilt avoiding frequency interference and Tx interference.

The down tilt angle of the antenna can be adjusted remotely without operator.

Weather, time and Node B location have no affect on the tilt operation of the

antenna.

Description

This function is used to adjust the down tilt angle through the remote or local control

software. It is achieved through changing the phase of multi-element antenna array and

adjusting the field amplitudes of the vertical and horizontal vectors. The electrical tilt

antenna control unit is integrated into the Node B internal rack. The operator can adjust

and detect the down tilt angle of an antenna through the RET software in the remote O &

M center, and it is shown in Figure 1-2. The electrical tilt antenna is widely used in radio

coverage system. And compared with the traditional antenna system, it has many

advantages.



Figure 1-2 Electrical Tilt Antenna System

O&M

Downtilt angle

mº

Downtilt angle

nº

Software of

Electrical Tilt

Antenna

Node B

Electrical Tilt Antenna

Eelectrical tilt antenna control

unit integrated in Node B

Remote electrical tilt antenna allows the system to adjust the down tilt angle in

directional pattern without powering off. Therefore, the antenna can be detected and

adjusted in real time, regardless of weather, geographic environment, etc. Its step

precision in angle adjustment is high (0.1°). Thus the remote electrical tilt antenna can

be used to adjust the network precisely, shortening the network construction and

reducing the maintenance cost.

ZTE RAN equipment supports the main functions of Electrical tilt antenna:

Equipped with standard AISG (Antenna Interface Standards Group) interfaces

Realize automatic angle adjustment of local antennae

Control automatic angle adjustment of remote antennae remotely

One RRU can control a maximum of three electrical tilt antennae to control the

motor

Perform configuration and network management through LMT or OMC

AISG has two protocol versions: ASIG1.1 and ASIG2.0. ASIG2.0 is written into 3GPP

R7, i.e., Iuant interface (electrical tilt antenna and tower amplifier standard control

interface). ZTE RAN equipment supports ASIG1.1 in V307R1, and ASIG2.0 in V408R1.

Introduced Version



V307R1 supports AISG1.1.

Enhanced Function

Support ASIG2.0 in V408R1, i.e., luant interface.

1.4 ZWF21-42-001 Flexible Frequency Configuration

Benefits

In GU frequency refarming scene, operator can get more GSM frequency resource in

whole network.

Description

ZTE RAN product support flexible frequency separation range configuration from

2.2MHz to 2.6MHz between GSM and UMTS system with algorithm optimization.

By means of smaller frequency separation configuration, operator can get more

frequency resource to deploy GSM whole network and improve frequency utilization,

and get more negative impacts on G/U network performance and KPI, especially to

UMTS uplink capacity in 2.2M frequency separation configuration even with carefully

network planning and optimization.

Introduced Version

U9.3

Enhanced Function

No

2 Abbreviation 16QAM 16 Quadrature Amplitude Modulation

AAL ATM Adaptation Layer



AAL2 ATM Adaptation Layer type 2

ABR Available Bit Rate

AC Access Class

ACK Acknowledgement

ACL Address Control List

A-DPCH Associated Dedicated Physical Channel

AICH Acquisition Indicator Channel Acquisition Indicator

Channel

AISG Antenna Interface Standards Group

AG Absolute Grant

AGPS Assisted Global Positioning System

ALCAP Access Link Control Application Protocol

AM Acknowledged Mode

AMC Adaptive Modulation and Coding

AMR Adaptive Multi Rate

AMR-WB Adaptive Multi-Rate Wide band

AMR-NB Adaptive Multi-Rate Narrow band

ANT Antenna

APS Active Protection System

ARP Allocation/Retention Priority

ARQ Automatic Repeat ReQuest

AS Access Stratum

ASC Access Service Class

ATM Asynchronous Transfer Mode

AWGN Additive White Gaussian Noise

BBU Base Band Unit

BER Bit Error Ratio

BFD Bidirectional Forwarding Detection

BITS Building Integrated Timing Supply System

BLER Block Error Ratio

BM-SC Broadcast Multicast Serving Center

BOOTP Bootstrap Protocol

BSC Base Station Controller

BSSMAP Base Station Subsystem Management Application Part

BTS Base Transceiver Station

CAC Call Admission Control

CBC Cell Broadcast Center

CBE Cell Broadcast Entity

CBR Constant Bit Rate

CBS Cell Broadcast Service

CC Continuity Check



CC Chase Combining

CCCH Common Control Channel

CCP Communication control ports

CDT Call Detail Trace

CE Channel Element

CN Core Network

COS Class of Service

CPC Continuous Packet Connectivity

CPEX Capital expenditure

CPICH Common Pilot Channel

CQI Channel Quality Indication

CS Circuit Switched

CSTM-1 Channelized STM-1

DCCH Dedicated Control Channel

DCH Dedicated Channel

DC-HSDPA Dual Cell HSDPA

DF Duplexer and Filter

DHCP Dynamic Host Configuration Protocol

DoS Denial of Service

DPCCH Dedicated Physical Control Channel

DPCH Dedicated Physical Channel

DPDCH Dedicated Physical Data Channel

DPT Dynamic Power Track

DRBC Dynamic Radio Bearer Control

DRNC Drifting RNC

DRT Delay Relative Time

DRX Discontinuous Reception

DSAR Domain Specific Access Restriction

DSCR Directed Signalling Connection Re-establishment

DTCH Dedicated Traffic Channel

DTM Dual Transfer Mode

DTX Discontinuous Transmission

EcN0 Received energy per chip divided by the power density in

the band

E-AGCH E-DCH Absolute Grant Channel

E-HICH E-DCH HARQ Acknowledgement Indicator Channel

E-DCH Enhanced Dedicated Channel

E-DPCCH E-DCH Dedicated Physical Control Channel

E-DPDCH E-DCH Dedicated Physical Data Channel

eNodeB E-UTRAN NodeB

EPD Early Packet Discard



E-RGCH E-DCH Relative Grant Channel

ETWS Earthquake and Tsunami Warning System

E-UTRAN Evolved Universal Terrestrial Radio Access Network

E-VAM Evolved VAM

EVC Ethernet Virtual Connection

FACH Forward Access Channel

F-DPCH Fractional Dedicated Physical Channel

FE Fast Ethernet

FEC Forward Error Correction

FIR Full Incremental Redundancy

FLC Frequency Layer Convergence

FLD Frequency Layer Dispersion

FP Frame Protocol

FSN Frame Sequence Number

GA Geographical Area

GBR Guarantee Bit Rate

GE Gigabit Ethernet

GGSN Gateway GPRS Support Node

GMGW Gated Media Gateway

GMSC Gateway MSC

GPS Global Positioning System

GERAN GSM EDGE Radio Access Network

GSM Global System for Mobile communications

GTP GPRS Tunneling Protocol

G/U GSM/UMTS

GWCN Gateway Core Network

HARQ Hybrid Automatic Repeat request

HCS Hierarchical Cell Structure

HLR Home Location Register

H-RNTI HSDPA Radio Network Temporary Identifier

HSDPA High Speed Downlink Packet Access

HS-DPCCH Dedicated Physical Control Channel (uplink) for HS-DSCH

HS-DSCH High Speed Downlink Shared Channel

HS-PDSCH High Speed Physical Downlink Shared Channel

HS-SCCH High Speed Physical Downlink Shared Control Channel

HSUPA High Speed Uplink Packet Access

IC Interference cancellation

IDNNS Intra Domain NAS Node Selector

IKE Internet Key Exchange

IMA Inverse Multiplexing over ATM

IMS IP Multimedia Subsystem



IMSI International Mobile Subscriber Identity

IPOA IP over ATM

IR Incremental Redundancy

KPI Key Performance Index

LA Location Area

LACP Link Aggregation Control Protocol

LCS Location Services

LMMSE Linear Minimum Mean Square Error

LMT Local Maintenance Terminal

LTE Long Term Evolution

M3UA MTP3 User Adaptation Layer

MAC Medium Access

MBMS Multimedia Broadcast Multicast Service

MBR Maximum Bit Rate

MCCH MBMS point-to-multipoint Control Channel

MCPPP Multi-Chasis PPP

MCS Modulation and Coding Scheme

MEP Maintenance End Point

MEG Maintenance Entity Group

MGW Media GateWay

MICH MBMS Indicator Channel

MIMO Multiple-Input Multiple-output

MLPPP Multilink-PPP

MME Mobile Management Entity

MMS Multimedia Messaging Service

MOCN Multi-Operator Core Network

MPC Multi Path Cancellation

MPO Measurement Power Offset

MR Measurement Report

MRR Measurement Report Record

MSC Mobile Switching Centre

MSCH MBMS point-to-multipoint Scheduling Channel

MSTP Multi-Service Transfer Platform

MTCH MBMS point-to-multipoint Traffic Channel

MTP3B Message Transfer Part level 3

MTU Maximum Transfer Unit

MUD Multi User Detection

NACC Network Assisted Cell Change

NACK Negative Acknowledgement

NAS Non-Access Stratum

NAT Network Address Translation



NBAP Node B Application Part

NBR Nominal Bit Rate

NCP Node B control port

N-ISDN Narrowband Integrated Services Digital Network

NITZ Network Identity and Time Zone

NNSF Network Node Selection Function

NRI Network Resource Identifier

NRT Non-Real Time

NTP Network Time Protocol

OAM Operation and Maintenance

OMC Operation and Maintenance Centre

OMCR Operation and Maintenance Centre of RNC

OPEX Operating expenses

OSPF Open Shortest Path First

OVSF Orthogonal Variable Spreading Factor

PA Power Amplifier

PCI Pre-coding Index

PDP Packet Data Protocol

PDU Protocol Data Unit

PF Proportional Fair

PHS Personal Handy phone System

PICH Paging Indicator Channel

PIR Partial Incremental Redundancy

PLMN Public Land Mobile Network

POS Packet over SONET/SDH

PPA Preferred Pool Area

PPD Partial Packet Discard

PPP Point-to-Point Protocol

PRACH Physical Random Access Channel

PS Packet Switched

PSTN Public Switched Telephone Network

PtM Point-to-Multipoint

PtP Point to Point

PVC Permanent Virtual Circuit

PWS Public Warning System

QAM Quadrature Amplitude Modulation

QoS Quality of Service

QPSK Quadrature (Quaternary) Phase Shift Keying

RA Routing Area

RAB Radio Access Bearer

RACH Random Access Channel



RAN Radio Access Network

RANAP Radio Access Network Application Part

RAT Radio Access Technology

RB Radio Bearer

RF Radio Frequency

RG Relative Grant

RL Radio Link

RLC Radio Link Control

ROHC Robust Header Compression

RR Radio Resources

RRC Radio Resource Control

RRM Radio Resource Management

RRU Radio Remote Unit

RNC Radio Network Controller

RNSAP Radio Network Subsystem Application Part

RSCP Received Signal Code Power

RSEPS Received Scheduled E-DCH Power Share

RSU Radio Sector Unit

RT Real-Time

RTCP Real-Time Transport Control Protocol

RTP Real Time Protocol

RTR RRU Transceiver

RTT Round-Trip Time

RTWP Received Total Wideband Power

SA Service Area

SAI Service Area Identifier

SABP Service Area Broadcast Protocol

SCCP Signalling Connection Control Part

SCCPCH Secondary Common Control Physical Channel

SCUDIF Service Change and UDI/RDI Fallback

SDH Synchronous Digital Hierarchy

SDP Session Description Protocol

SF Spreading Factor

SFN System Frame Number

SG Scheduling Grant

SGSN Serving GPRS Support Node

SIB System Information Block

SIP Session Initiation Protocol

SIR Signal-to-Interference Ratio

SLA Service Level Agreement

SMLC Service Mobile Location Center



SMS Short Message Service

SMS-CB SMS Cell Broadcast

SNA Shared Network Area

SNR Signal-to-noise ratio

SNTP Simple Network Time Protocol

SONET Synchronous Optical Networking

SPI Schedule Priority Indicator

SRB Signalling Radio Bearer

SRNC Serving Radio Network Controller

SRNS Serving RNS

SR-VCC Single Radio Voice Call Continuity

SSCF Service Specific Co-ordination Function

SSCOP Service Specific Connection Oriented Protocol

STM-1 Synchronous Transport Module Level 1

STTD Space Time Transmit Diversity

TB Transport Block

TC Traffic Class

TCP Transmission Control Protocol

TDM Time-division multiplexing

TFI Transport Format Indicator

TFO Tandem Free Operation

TFRC Transport Formation and Resources Combination

THP Traffic Handling Priority

TM Transparent Mode

TPC Transmit Power Control

TrCH Transport Channel

TrFO Transcoder Free Operation

TTI Transmission Time Interval

UBR Unspecified Bit Rate

UBR+ Unspecified Bit Rate Plus

UDI Unrestricted Digital Information

UE User Equipment

UEA 3G Encrypt Algorithm

UM Unacknowledged Mode

UMTS Universal Mobile Telecommunications System

URA User Registration Area

UTRAN Registration Area

USIM Universal Subscriber Identity Module

UTRAN UMTS Terrestrial Radio Access Network

VAM Virtual Antenna Mapping

VBR Variable Bit Rate



VC Virtual Circuit

VLAN Virtual Local Area Network

VoIP Voice over IP

VP Virtual Path

VSWR Voltage Standing Wave Ratio

WCDMA Wideband Code Division Multiple Access

WRR Weighted Round Robin

4.4.3.2 GU_ZTE UMTS OPEX Saving Features Description

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