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Chapter 1 Product Overview

TIA/EIA/TSB-74, Support for 14.4 Kbps Data Rate and PCS Interaction for Wideband

Spread Spectrum Cellular System, 1995.

TIA/EIA/IS-95-A, Mobile Station-Base Station Compatibility Standard for Dual-Mode

Wideband Spread Spectrum Cellular Systems.

TIA/EIA/IS-95, Mobile Station-Base Station Compatibility Standard for Dual-Mode

Wideband Spread Spectrum Cellular Systems.

TIA/EIA/IS-637, Short Message Services for Wideband Spread Spectrum Cellular

Systems, 1997.

TIA/EIA/IS-127, Enhanced Variable Rate Codec Speech Service Option 3 for

Wideband Spread Spectrum Digital Systems, 1996.

TIA/EIA/IS-634A, MSC-BS Interface for Public Communications Networks, 1998.

TIA/EIA/IS-658, Data Service Interworking Function Interface for Wideband Spread

Spectrum Systems.

CDG RF36, Markov Service Option for Wideband Spread Spectrum Communications

Systems.

TIA/EIA/IS-725, Over-the-Air Service Provisioning of Mobile Stations in Wideband

Spread Spectrum Systems, 1997

TIA/EIA/IS-728, Inter-System Link Protocol.

TIA/EIA/IS-733, High Rate Speech Service Option 17 for Wideband Spread Spectrum

Communication Systems.

TIA/EIA/IS-707, Data Service Options for Wideband Spread Spectrum Systems,

1998.

TIA/EIA/IS-707-A-2 Data Service Options for Spread Spectrum Systems Addendum

2, 2000.

ITU-T Q.714 Signaling connection control part (SCCP).

ITU-T Q.704 Signal link (MTP3).

ITU-T Q.703 Signal link (MTP2).

3GPP2 C.S0024-A (TIA/EIA IS-856-A): CDMA2000 High Rate Packet Data Air

Interface Specification, August 2005.

3GPP2 C.S0024 (TIA/EIA IS-856): CDMA2000 High Rate Packet Data Air Interface

Specification, October 2002.

3GPP2 A.S0008 (TIA/EIA IS-878), IOS Specification for High Rate Packet Data

(HRPD) Radio Access Network Interfaces.

3GPP2 A.S0008-A. Interoperability Specification (IOS) for High Rate Packet Data

(HRPD) Radio Access Network Interfaces With Session Control in the Access Network

3GPP2 A.S0007, Inter-Operability Specification (IOS) for High Rate Packet Data

(HRPD) Access Network Interfaces, November 2001.

3GPP2 C.S0029: Test Application Specification (TAS) for High Rate Packet Data Air

Interface.

l 3GPP2 C.S0032-A, Recommended Minimum Performance Standards for

CDMA2000 High Rate Packet Data Access Network, December 2005.

3GPP2 C.S0032, Recommended Minimum Performance Standards for CDMA2000

High Rate Packet Data Access Network, January 2004.

3GPP2 C.S0010-A (TIA-97-D), Recommended Minimum Performance Standards for

cdma2000 Spread Spectrum Base Stations, March 2001.

1-19

SJ-20100722143906-001|08/30/2010

ZTE Proprietary and Confidential

Содержание ZXSDR R8860

Страница 1: ...DMA Remote Radio Unit 8860 Technical Manual ZTE CORPORATION NO 55 Hi tech Road South ShenZhen P R China Postcode 518057 Tel 86 755 26771900 Fax 86 755 26770801 URL http ensupport zte com cn E mail support zte com cn ...

Страница 2: ...ess for a particular purpose title or non infringement ZTE CORPORATION and its licensors shall not be liable for damages resulting from the use of or reliance on the information contained herein ZTE CORPORATION or its licensors may have current or pending intellectual property rights or applications covering the subject matter of this document Except as expressly provided in any written license be...

Страница 3: ...Ethers PBDE s The ZXSDR R8860 manufactured by ZTE CORPORATION meet the requirements of EU 2002 95 EC however some assemblies are customized to client specifications Addition of specialized customer specified materials or processes which do not meet the requirements of EU 2002 95 EC may negate RoHS compliance of the assembly To guarantee compliance of the assembly the need for compliant product mus...

Страница 4: ...II ...

Страница 5: ... fcc gov oet rfsafety to learn more about the effects of exposure to RF electromagnetic fields Changes or modifications to this unit not expressly approved by the party responsible for compliance will void the user s authority to operate the equipment Any change to the equipment will void FCC and IC grant This equipment has been tested and found to comply with the limits for a Class A digital devi...

Страница 6: ...II ...

Страница 7: ...lectromagnetic energy levels and evaluation of such levels for exposure to humans 1 FCC OET Bulletin 65 Edition 97 01 Supplement C Evaluating Compliance with FCC Guidelines for Human Exposure to Radio Frequency Electromagnetic Fields 2 tAmerican National Standards Institute C95 1 1992 IEEE Standard for Safety Levels with Respect to Human Exposure to Radio Frequency Electromagnetic Fields 3 kHz to ...

Страница 8: ...II ...

Страница 9: ... l Equipment commissioning engineers Prerequisite Skill and Knowledge To use this document effectively users should have a general understanding of ZXSDR R8860 equipment and its components Familiarity with the following is helpful l ZXSDR R8860 hardware structure l Basic software knowledge What is in This Manual This manual contains the following chapters Chapter Summary Chapter 1 Product Overview...

Страница 10: ...n topic Checkpoint Indicates that a particular step needs to be checked before proceeding further Tip Indicates a suggestion or hint to make things easier or more productive for the reader Mouse operation conventions are listed as follows Typeface Meaning Click Refers to clicking the primary mouse button usually the left mouse button once Double click Refers to quickly clicking the primary mouse b...

Страница 11: ...re 1 10 1 8 2 Signal Flow 1 10 1 9 Networking 1 11 1 9 1 Baseband RF Interface Networking 1 11 1 9 2 Cascade Networking 1 12 1 9 3 Frequency Extension Networking 1 12 1 10 Equipment Management Modes 1 13 1 10 1 OMC Mode 1 13 1 10 2 LMT Mode 1 14 1 11 Technical Indices 1 15 1 11 1 Engineering Indices 1 15 1 11 2 Performance Indices 1 16 1 11 3 RF Indicies 1 17 1 12 Compliance Standards 1 18 Chapter...

Страница 12: ... 4 Optical Fiber Cable 2 7 2 3 5 Environment Monitoring Cable 2 7 2 3 6 Carrier Sector Extension Cable 2 8 2 3 7 RF Jumper Cable 2 9 2 4 Main Antenna Feeder System 2 10 2 4 1 Main Antenna Feeder System Structure 2 10 2 4 2 Antenna 2 14 2 4 3 Feeder Structure 2 15 Chapter 3 Protocol Interface Description 3 1 3 1 Network Reference Model 3 1 3 2 Um Interface 3 2 3 3 Baseband RF Interface 3 6 Figures ...

Страница 13: ...odes 1 13 Technical Indices 1 15 Compliance Standards 1 18 1 1 Distributed ZTE BTS Solution In order to provide more competitive communication devices and solutions for customers ZTE provides distributed ZTE CDMA2000 BBU RRU solution to accomplish service functions of CDMA2000 BTSs Figure 1 1 shows the architecture of distributed ZTE BTS solution Figure 1 1 Distributed ZTE BTS Solution 1 1 SJ 2010...

Страница 14: ...h traditional BTSs the distributed BBU RRU BTS has lower power consumption which reduces power investment saves electrical expenses and network operation cost l Distributed networking mode It supports star and chain networking between BBUs and RRUs effectively making full use of network resources l Advanced universal BTS platform The BBU uses a B3G and 4G oriented platform that implements various ...

Страница 15: ...k 1 3 Appearance The ZXSDR R8860 cabinet is plated with materials that are applicable to outdoor environments Figure 1 3 shows the ZXSDR R8860 cabinet appearance Figure 1 3 ZXSDR R8860 Cabinet Appearance 1 3 SJ 20100722143906 001 08 30 2010 ZTE Proprietary and Confidential ...

Страница 16: ...ace CPRI protocol Air interface compliant with IS 2000 Release A and IS 856 A Interface Local debugging and maintenance interface Ethernet Support for the remote application of the RRU networking modes are involved into star and chain Combined RF cabinets diversity output input Networking Support for the cascading networking mode of RRU the highest up to 4 levels Input power undervoltage overvolta...

Страница 17: ...orting pole mount wall mount and Gantry mount installations Except for the Gantry mount installation which occupies minimum floor space the other cases almost does not occupy any floor space l Light Weight A single ZXSDR R8860 cabinet weighs 22 kg so it is easy to transport and install requiring low manpower and engineering costs l Optical fiber Support ZXSDR R8860 supports optical fiber installat...

Страница 18: ...r and chain networks delivering flexible solutions to complicated network environments 1 6 External Interfaces The external interfaces supported by the ZXSDR R8860 are located at the bottom of the cabinet Figure 1 4 shows the external interfaces of ZXSDR R8860 Figure 1 4 ZXSDR R8860 External Interfaces 1 LC1 2 LC2 3 AISG 4 Mon 5 DC IN 6 RXIn 7 RXout 8 RX TX 9 RX Interface Description Table 1 2 lis...

Страница 19: ...inet integrative installation modes The application scenarios are classified into the following situations according to different installation conditions power supply requirements and user demands l In the condition of ZXSDR R8860 indoor installation with the DC power cable 10 m outside the equipment room and without Level B and above lightning module configured in the indoor power output the indo...

Страница 20: ...llation This section illustrates the ZXSDR R8860 pole mount installation in terms of double and three cabinets installation l Two ZXSDR R8860 cabinets Figure 1 6 illustrates two ZXSDR R8860 cabinets mounted on a pole 1 8 SJ 20100722143906 001 08 30 2010 ZTE Proprietary and Confidential ...

Страница 21: ...8860 Cabinets Pole Mount Mode l Three ZXSDR R8860 cabinets Figure 1 7 illustrates three ZXSDR R8860 cabinets mounted on a pole Figure 1 7 Three ZXSDR R8860 Cabinets Pole Mount Mode 1 9 SJ 20100722143906 001 08 30 2010 ZTE Proprietary and Confidential ...

Страница 22: ...utput port delivers the power division function l An electronic switch is set at the receive diversity channel and an external input port is reserved to deliver the compatibility with the long distance frequency The system can switch over to input signals through the FL of local Radio Unit RU or through another Remote Radio Unit RRU Figure 1 8 shows the overall system structure Figure 1 8 ZXSDR R8...

Страница 23: ...the signal into baseband digital signals and then transmits to the baseband unit through the CPRI interface 1 9 Networking 1 9 1 Baseband RF Interface Networking The ZXSDR R8860 is connected to the Base Band Unit BBU by optical interfaces It supports the Common Public Radio Interface CPRI protocol and star and chain networking modes as shown in Figure 1 9 Figure 1 9 ZXSDR R8860 Baseband RF Interfa...

Страница 24: ... 1 10 ZXSDR R8860 Cascade Networking RRUs are connected by optical fiber The RRU optical interface LC1 serves to connect BBU or the upper level RRU while LC2 serves to connect the lower level RRU 1 9 3 Frequency Extension Networking ZXSDR R8860 supports mutual receive diversity by means of cabinet combination so that it can support high carrier or great carrier frequency difference application Fig...

Страница 25: ...n Networking 1 10 Equipment Management Modes 1 10 1 OMC Mode The NetNumen M3 network management system NMS developed by ZTE can be used to operate and maintain the ZXSDR R8860 as shown in Figure 1 12 1 13 SJ 20100722143906 001 08 30 2010 ZTE Proprietary and Confidential ...

Страница 26: ... NetNumen M3 provides the following functions l Configuration Management l Performance Management l Fault Management l Security Management l Report Management l System Tools 1 10 2 LMT Mode A Local Maintenance Terminal LMT can be used to operate and maintain the ZXSDR R8860 as shown in Figure 1 13 1 14 SJ 20100722143906 001 08 30 2010 ZTE Proprietary and Confidential ...

Страница 27: ...cribes the engineering indices of ZXSDR R8860 Table 1 3 ZXSDR R8860 Engineering Indices Item Indices Overall Dimension Width x Height x Depth 320mm x 500mm x 172mm Upper Enclosure Dimension Width x Height x Depth 320mm x 370mm x 72mm Lower Enclosure Dimension Width x Height x Depth 320mm x 500mm x 100mm Weight 22 kg Power 48V DC 40V 57 V Work Temperature 40 to 55 40 to 131 Work Humidity 5 RH 95 RH...

Страница 28: ...Technical Indices Item Index Dimensions Width x Height x Depth 400 mm x 450 mm x 100 mm The height of top cover box lock excluded Nominal Working Voltage 48V Installation Mode Indoor wall mount installation Working Temperature 5 to 70 Working Humidity 95 RH 1 11 2 Performance Indices Table 1 5 lists the performance indices of the ZXSDR R8860 Table 1 5 ZXSDR R8860 Performance Indices Name Index Val...

Страница 29: ...ith its uplink as 1710 MHz 1755MHz and downlink as 2110 MHz 2155MHz 450MHz Band Class 5 with its uplink as 450 MHz 460MHz and downlink as 460 MHz 470MHz 850MHz Band Class 10 with its uplink as 806 MHz 821MHz and downlink as 851 MHz 866MHz 420MHz Band Class 5 with its uplink as 410 MHz 420MHz and downlink as 420 MHz 430MHz 2100MHz Band Class 6 with its uplink as 1920 MHz 1979 95MHz and downlink as ...

Страница 30: ... receiver 1 50 1 12 Compliance Standards ZXSDR R8860 follows the following compliance standards l ANSI J STD 008 Personal Station Base Station Compatibility Requirement for 1 8 to 2 0 GHz Code Division Multiple Access CDMA Personal Communications System 1996 l 3GPP2 C S0001 A version 5 0 Introduction to CDMA2000 Standards for Spread Spectrum Systems Release A l 3GPP2 C S0002 A version 6 0 TIA EIA ...

Страница 31: ...band Spread Spectrum Systems 1998 l TIA EIA IS 707 A 2 Data Service Options for Spread Spectrum Systems Addendum 2 2000 l ITU T Q 714 Signaling connection control part SCCP l ITU T Q 704 Signal link MTP3 l ITU T Q 703 Signal link MTP2 l 3GPP2 C S0024 A TIA EIA IS 856 A CDMA2000 High Rate Packet Data Air Interface Specification August 2005 l 3GPP2 C S0024 TIA EIA IS 856 CDMA2000 High Rate Packet Da...

Страница 32: ...ications Trial China Unicom 1999 l QB CU 003 99 Technical Specifications for China Unicom 800MHz CDMA Digital Cellular Mobile System Equipment Base Station Trial China Unicom 1999 l QB CU 006 99 Technical Specifications for Interfaces between Switches and Base Stations in China Unicom 800MHz CDMA Digital Cellular Mobile Network Trial China Unicom 1999 l QB CU 007 99 China Unicom 800MHz CDMA Digita...

Страница 33: ... by an anti theft screw with two hinges as stop blocks The top enclosure is equipped with a handle to facilitate conveyance and installation A reserved engineering installation position on the bottom enclosure makes it easy to install the cabinet under various working environments by using installation accessories Figure 2 1 shows the ZXSDR R8860 cabinet external structure 2 1 SJ 20100722143906 00...

Страница 34: ...losures Table 2 1 ZXSDR R8860 Cabinet Enclosure Dimensions Enclosure Dimension W x H x D Top 320mm 370mm 72mm Bottom 320mm 500mm 100mm 2 1 2 Indoor Structure TheZXSDR R8860 cabinet consists of four modules such as FL module PA module DC Power module and TR module Figure 2 2 shows the ZXSDR R8860 cabinet internal structure 2 2 SJ 20100722143906 001 08 30 2010 ZTE Proprietary and Confidential ...

Страница 35: ...eat exchanger requirement for outdoor application In addition a heat sink is equipped at the bottom of the cabinet to enhance heat dissipation 2 2 Modules 2 2 1 Modules List The ZXSDR R8860 cabinet consists of four modules such as l FL module l PA module l DC Power module l TR module 2 2 2 Filter LNA FL The functions of the Filter LNA FL module are as follows l Performs filtering and low noise amp...

Страница 36: ... processing à Conversion from RF signal to baseband signal à Digital IF processing à RSSI and RAB report à In band anti interference function à Spectrum report à Automatic gain control AGC à Output IQ data format conversion à Supports switching between different receive channel signals in the case of main diversity combined cabinets l Clock processing Performs clock recovery for data on the CPRI b...

Страница 37: ...rm detection and report à System environment monitoring à CPRI self test alarm à Key chip self test alarm 2 2 4 Power Amplifier PA The Power Amplifier PA module performs the following functions l Amplifies downlink RF signal input via the TR and then sends the signal to the FL l Provides digital pre distortion feedback signals for the TR l Provides a PA output enable disable interface 2 2 5 Power ...

Страница 38: ...ar in the equipment room It provides system ground to prevent devices from static damage and making sure devices run reliably The ZXSDR R8860 grounding cable is a standard fire resistant cable adopting yellow and green core conductor with 10mm2 cross sectional area Both ends of the cable are the circular bare copper lug connectors Figure 2 4 shows the structure of the grounding cable Figure 2 4 Gr...

Страница 39: ...onnector 2 Outdoor fiber sealing nut component 3 Label 4 Single mode 2 core fiber tail 5 LC optical connector Note The fiber is used in outdoor environments The fiber sheath should be waterproof and anti ultraviolet The working temperature should be in the range of 40 80 The sheath is of black color Figure 2 7 shows the optical fiber cable used for cascaded cabinets Figure 2 7 Fiber Used for Casca...

Страница 40: ...Core color Signal description 15 16 White and blue blue Dry contact 4 17 18 White and orange orange Dry contact 3 19 20 White and green green Dry contact 2 21 22 White and brown brown Dry contact 1 23 24 Red and blue blue RS485 received 25 26 Red and orange orange RS485 transmission 2 3 6 Carrier Sector Extension Cable The carrier sector extension cable is used to connect two ZXSDR R8860 cabinets ...

Страница 41: ...ZXSDR R8860cabinet is less and the adopted feeder cable is of 1 2 in then the jumper cable is not used rather ZXSDR R8860cabinet is directly connected with the feeder cable and feeder cable is connected to the antenna If the adopted feeder cable is of 7 8 in or 5 4 in then jumper is used Figure 2 11 shows the RF jumper cable Figure 2 11 RF Jumper Cable Note The length of the RF jumper cable is det...

Страница 42: ...ntenna AISG dual tower amplifier ZXSDR R8860 configured with common antenna In this configuration generally ZXSDR R8860 installation position is near antenna and they are all installed on the building top ZXSDR R8860 is connected to the antenna by 1 2 feeder directly occasionally 5 4 or 7 8 feeder is adopted as shown in Figure 2 12 Figure 2 12 ZXSDR R8860 Configured with Common Antenna ZXSDR R8860...

Страница 43: ...igured with electrically tuned antenna 1 In this configuration generally ZXSDR R8860 installed near the antenna on the building top ZXSDR R8860 is connected to the antenna by 1 2 feeder directly occasionally 5 4 or 7 8 feeder is adopted as shown in Figure 2 14 2 11 SJ 20100722143906 001 08 30 2010 ZTE Proprietary and Confidential ...

Страница 44: ...DR R8860 configured with electrically tuned antenna 2 In this configuration generally ZXSDR R8860is installed near the top of the tower ZXSDR R8860 is connected to the antenna by 5 4 or 7 8 feeder is adopted as shown in Figure 2 15 2 12 SJ 20100722143906 001 08 30 2010 ZTE Proprietary and Confidential ...

Страница 45: ...onfigured with electrically tuned antenna AISG dual tower amplifier In this configuration generally ZXSDR R8860is installed near the top of the tower ZXSDR R8860 is connected to the antenna by 5 4 or 7 8 feeder is adopted as shown in Figure 2 16 2 13 SJ 20100722143906 001 08 30 2010 ZTE Proprietary and Confidential ...

Страница 46: ...na The ZXSDR R8860 antenna feeder system adopts common antenna or electrical antenna For the electrical antenna you can adjust the lever to control the embedded adjuster and thus to tune the downtilt angle of the antenna The tilt reflects the direction from which the 2 14 SJ 20100722143906 001 08 30 2010 ZTE Proprietary and Confidential ...

Страница 47: ...feeder is used to receive and transmit radio RF signals between the antenna and the ZXSDR R8860 There are many types of feeder cables such as 1 2 inch and 7 8 inch feeder cable When the distance between the ZXSDR R8860 cabinet and antenna is less then 1 2 inch feeder cable is used In this case the ZXSDR R8860 cabinet is directly connected to the 1 2 inch feeder and 1 2 inch feeder cable is connect...

Страница 48: ...ZXSDR R8860 Technical Manual This page intentionally left blank 2 16 SJ 20100722143906 001 08 30 2010 ZTE Proprietary and Confidential ...

Страница 49: ...1 CDMA2000 1x Network Reference Model The description of the interfaces in Figure 3 1 are described in Table 3 1 Table 3 1 Interface Description Interface Description Abis Interface between BSC and BTS CPRI Interface between BBU and RRU of the distributed base station A1 A1p Signaling interface between MSCe MGW and BSC A2 A2p Service interface between MSCe MGW and BSC 3 1 SJ 20100722143906 001 08 ...

Страница 50: ...n PCF and PDSN and between PDC and PDS 3 2 Um Interface The Um interface is the air interface between Mobile Station MS and Base Transceiver Station BTS complying with the IS 2000 ReleaseA standards and the IS 856 A standard CDMA2000 1x Um Interface The CDMA2000 1x Um interface is composed of physical layer data link layer and uppermost layer Figure 3 2 shows the protocol reference model Figure 3 ...

Страница 51: ... application layer stream layer session layer connection layer security layer and physical layer The Um interface meets the IS 856 protocol standard Every layer defines one or more protocols to realize its function Figure 3 3 illustrates the overall protocol reference model Figure 3 3 1xEV DO Um Interface Protocol Reference Model l Application layer The application layer provides multiple applicat...

Страница 52: ...em a session indicates a state jointly maintained between Access Terminal AT and Access Network AN It includes address UATI distributed to the terminal protocol set determined by the terminal and the network for air interface communication protocol configurations in the protocol set and current terminal location The session layer defines three protocols à Session Management Protocol activates othe...

Страница 53: ... packets controls packet scheduling and transmission rule of channels and regulates how the terminal captures the control channel and receives control channel packets à Access Channel MAC Protocol defines that the terminal sends timing messages and power features over the access channel à Forward Traffic Channel FTC Protocol regulates how to control the rate of the FTC through the DRC and how to s...

Страница 54: ...baseband RF interface of ZXSDR R8860 complies with the common public radio interface CPRI specification The CPRI specification was instituted by the CPRI Union which is an industry cooperation organization devoting itself to institution of internal radio interface specifications of radio base stations The CPRI specification describes the transmission control and synchronization mechanisms of user ...

Страница 55: ...Cabinet Outer Structure 2 2 Figure 2 2 ZXSDR R8860 Cabinet Internal Structure 2 3 Figure 2 3 DC Power Cable Structure 2 6 Figure 2 4 Grounding Cable Structure 2 6 Figure 2 5 Outline of the AISG control cable 2 7 Figure 2 6 Fiber Cable Used to Connect BBU 2 7 Figure 2 7 Fiber Used for Cascaded Cabinets 2 7 Figure 2 8 Environment Monitoring Cable 2 8 Figure 2 9 Outline of Connector 2 8 Figure 2 10 C...

Страница 56: ... Technical Manual Figure 3 2 CDMA2000 1x Um Interface Protocol Reference Model 3 2 Figure 3 3 1xEV DO Um Interface Protocol Reference Model 3 3 Figure 3 4 Structure of the BCMCS Um Interface Protocol Stack 3 6 II ...

Страница 57: ...1Z DC Lightning Box Technical Indices 1 16 Table 1 5 ZXSDR R8860 Performance Indices 1 16 Table 1 6 ZXSDR R8860 RF Indices 1 17 Table 2 1 ZXSDR R8860 Cabinet Enclosure Dimensions 2 2 Table 2 2 Colors Correspondence between DC Power Cable and Signals 2 6 Table 2 3 Environment Monitoring Cable Pins and Connecting Cores Description 2 8 Table 3 1 Interface Description 3 1 III ...

Страница 58: ...Tables This page intentionally left blank ...

Страница 59: ... Station Controller BSS Base Station System BTS Base Transceiver Station CDMA Code Division Multiple Access CPRI Common Public Radio Interface DRC Data Rate Control FL Forward Link FL Filter LNA LNA Low Noise Amplifier MAC Medium Access Control MSCe Mobile Switching Center emulator PA Power Amplifier PCF Packet Control Function V ...

Страница 60: ...le reverse traffic channels and data distribution from a forward traffic channel to multiple cells sectors during soft handoff PDSN Packet Data Service Node RAB Radio Access Bearer RF Radio Frequency RLP Radio Link Protocol RRU Remote Radio Unit RSSI Received Signal Strength Indicator TR Transceiver VI ...

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