1、 TIA-930-2003 APPROVED: JANUARY 1, 2003 REAFFIRMED: SEPTEMBER 19, 2013 TIA-930 January 2003Legacy Mobile Station Domain (LMSD) - Step 1 NOTICE TIA Engineering Standards and Publications are designed to serve the public interest through eliminating misunderstandings between manufacturers and purchase
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17、NY AND ALL INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES (INCLUDING DAMAGES FOR LOSS OF BUSINESS, LOSS OF PROFITS, LITIGATION, OR THE LIKE), WHETHER BASED UPON BREACH OF CONTRACT, BREACH OF WARRANTY, TORT (INCLUDING NEGLIGENCE), PRODUCT LIABILITY OR OTHERWISE, EVEN IF ADVISED OF THE POSSIBI
18、LITY OF SUCH DAMAGES. THE FOREGOING NEGATION OF DAMAGES IS A FUNDAMENTAL ELEMENT OF THE USE OF THE CONTENTS HEREOF, AND THESE CONTENTS WOULD NOT BE PUBLISHED BY TIA WITHOUT SUCH LIMITATIONS. TIA-930 Contents 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Contents .ii Figures. iii Revision History.iv 1 Intro
19、duction. 1 2 Acronyms 2 3 References . 3 3.1 TIA/3GPP2 References. 3 3.2 IETF References . 3 3.3 ITU References . 3 4 LMSD Step 1 Network Reference Model 4 5 yy Interface Protocol Reference Model 6 6 RTP Protocol 6 i TIA-930 Figures 1 2 3 4 5 6 7 Figure 1: LMSD Step 1 Network Reference Model 5 Figur
20、e 2: Reference Point yy Protocol Reference Model 6 ii TIA-930 Revision History 1 2 Revision Changes Date 0 Initial Publication January, 2003 3 4 5 iii TIA-930 This Page Intentionally Left Blank iv TIA-930 1 Introduction 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 This standard specif
21、ies the necessary interfaces to support the bearer traffic between Media Gateways in the initial step of the Legacy Mobile Station Domain (LMSD). The requirements for this work are defined in 6, and the overall architecture model is defined in 5. This standard defines bearer support of G.711 PCM enc
22、oded voice over IP as defined in RFC 1890 at a minimum, for use between media gateways in a cdma2000 Legacy Mobile Station Domain. This standard utilizes existing IETF and 3GPP2 protocols when applicable to minimize the new work needed. The necessary signaling needed to setup the bearer paths is def
23、ined in 3. For the initial release of this standard, the following basic capabilities defined in 6 are supported. Enhanced capabilities may be defined in future versions of this standard: The yy interface spans across a managed IP network. The QoS mechanism for the yy interface is not defined in thi
24、s version of the standard. All Security issues between Media Gateways are not defined in this version of the standard. TrFO support over the yy interface is not defined in this version of the standard. Handoffs between LMSD networks are not supported over the yy interface. Handoffs must be supported
25、 using existing TIA/EIA-41 signaling and Inter MSC Trunks. 1 TIA-930 2 Acronyms 1 2 3 4 5 AAA Authorization, Authentication, and Accounting BSC/RNC Base Station Controller/Radio Network Controller BTS Base Transmission Station FA Foreign Agent HA Home AgentIOS Inter-Operability Specification IP Inte
26、rnet ProtocolITU - T International Telecommunications Union - Telephony LMSD Legacy MS Domain MGW Media Gateway MRFP Media Resource Function Processor MS Mobile Station MSCe Mobile Switching Center emulation PCF Packet Control Function PCM Pulse Code Modulation PDSN Packet Data Service Node PSTN Pub
27、lic Switched Telephone Network PT Payload Type QoS Quality of Service RFC Request for Comment R-SGW Roaming Signaling Gateway RTP Real-time Transport Protocol SIP Session Initiated Protocol TrFO Transcoder Free Operation TSG Technical Specification Group T-SGW Trunk Signaling Gateway UDP User Datagr
28、am Protocol 2 TIA-930 3 References 1 2 3 4 5 6 7 8 9 10 3.1 TIA/3GPP2 References 1 TIA/EIA/IS-2001.2-B Interoperability Specification (IOS) for CDMA 2000 Access Network Interfaces Part 2 Transport, May 2002 2 TIA/EIA/IS-2001.4-B Interoperability Specification (IOS) for CDMA 2000 Access Network Inter
29、faces Part 4 (A1, A2, and A5 Interfaces), May 2002 3 TIA-872 IP Network for cdma2000 Spread Spectrum Systems 3GPP2 All-IP Core Network Enhancements For Legacy MS Domain, December 2002 4 TIA/EIA/IS-835-B cdma2000 Wireless IP Network Standard, September 2002 5 3GPP2 S.R0037 IP Network Architecture Mod
30、el for cdma2000 Spread Spectrum Systems, Version 2.0, May 2002 6 3GPP2 S.R0059 Legacy MS Domain Step 1 System Requirements, May 2002 3.2 IETF References RFC 1890 RTP Profile for Audio and Video Conferences with Minimal Control, January 1996 3.3 ITU References G.711 Pulse code modulation (PCM) of voi
31、ce frequencies, November 1988 3 TIA-930 4 LMSD Step 1 Network Reference Model 1 2 3 4 5 6 7 8 9 10 11 12 13 Figure 1 shows the LMSD Step 1 network reference model. The LMSD Step 1 network reference model consists of the following entities: MGW, MRFP, MSCe, HLRe, and SCPe. The functional description
32、of the entities is specified in 5. The PDSN, HA, and AAA shown in Figure 1 for architecture completeness are not used in this standard, nor are they required to support LMSD Step 1. This standard specifies the interface for the reference point yy, which is the bearer path between the MGWs. Other ref
33、erence points required for LMSD Step 1 support include reference points xx, zz and 39. The interfaces for xx, zz and 39 between the controlling entities (MRFP and MSCe) and the MGWs are defined in 3. Any other reference points shown in Figure 1 are not required to support LMSD Step 1 and are therefo
34、re not defined in this standard. 4 TIA-930 Mobile IPHomeAgentAAA21473422394544484027MobileStationcdma2000 Access NetworkBTS4341AccessGatewayPDSN(FA /Attendant)3135BSC/RNC+ PCF14Legacy MS Domain SupportMSCeHLRe SCPeMAPTIA/EIA-41GSMPSTN13MediaResourceFunctionProcessorxxOther LMSDMediaGatewayMSCeMediaG
35、atewayyyzzIPNetworkLegendRadio InterfaceSignaling TrafficBearer Traffic32363742331 2 Figure 1: LMSD Step 1 Network Reference Model 5 TIA-930 5 yy Interface Protocol Reference Model 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 Figure 2 shows the protocol stack required on the LMSD Step 1 bearer
36、 path between MGWs (interface yy) using G.711 as an example. The protocol stack for the control plane on the MGW is defined in 3. RN MGW MGWyyIOS A2cdma2000LowerLayersG.711PCM VoiceTranscoderFunctionL1LowerLayersRTPUDPIPG.711PCMVoiceG.711 PCMVoiceL2L1G.711PCMVoiceRTPUDPIPL2MobileStationEncodedVoicec
37、dma2000L1cdma2000L2EncodedVoicecdma2000L1cdma2000L2Figure 2: Reference Point yy Protocol Reference Model 6 RTP Protocol The bearer traffic between the MGWs is defined as G.711 PCM at a minimum. This bearer traffic shall be transported using RTP RFC 1890 as defined in section 6, Table 2: Payload Type
38、s (PT) for standard audio and video encoding. Payload Type 0 is assigned for PCMU, and Payload Type 8 is assigned for PCMA. PCMA and PCMU are specified in ITU-T recommendation G.711. Both PT 0 and PT 8 shall be supported on interface reference point yy. 6 THE TELECOMMUNICATIONS INDUSTRY ASSOCIATION
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