NGN中继媒体网关的关键技术方案研究
摘要
通信市场的主要推动力来自于技术革新、新的利润增长点、竞争激烈化、以及市场的重分配。今天的市场趋势是数据业务快速增长,并且移动用户数将超越固定用户数。未来的市场趋势是话音与数据集成,并且网络将由新技术取代。下一代网络NGN正是在以上的技术需求和市场推动力的前提下推出的。
作为NGN的核心设备,媒体网关提供了PSTN电路交换和分组网包交换的转换。本文综合探讨了媒体网关开发的市场前景、网络基础架构背景、关键技术与应用,和实现结构。
本论文立足于下一代网络NGN,介绍了NGN的基本特征、基础架构、应用模式和功能体系。从理论层面对VoIP的关键技术进行了深入探讨包括保证电话服务质量的关键技术和相关的信令与协议。从应用层面对中继媒体网关在NGN中的应用、组网架构、功能性架构和协议栈架构进行了探讨。从实现层面对中继媒体网关的系统结构进行了全方面和深入的探讨和分析,从而提出了一种典型的可实现的中继媒体网关结构,并且在课题开发期间本人实现了SFM和PIM等核心板卡的开发工作。最后本文基于一种开发式的平台结构ATCA展望了中继媒体网关的实现,并且在课题开发期间本人实现了ATCA的核心交换板卡Hub的开发工作。
The main engines for accelerating telecommunication market include technique innovation, profit increase, competition intensification, and market reallocation. Today, rapid increase on the data business is the trend of the market, with the fact of more users for mobile business than fixed business. Therefore the market trend will focus on the consolidation between voice and data, with new network architecture. The NGN comes out based on the above background.
As a key equipment of NGN, the trunking media gateway provides the conversion between PSTN and packet network. This paper discusses the market foreground, basic network architecture, key techniques and application, and development structure of the trunking media gateway.
This paper introduces the basic features, basic architecture, application mode, and functional system of NGN. From theory point of view, this paper studies the key techniques of VoIP, like quality of service, signaling and protocols. From application point of view, this paper studies the application, network architecture, functional structure and protocols stack-up of the trunking media gateway, to develop an achievable structure of the trunking media gateway. The SFM and PIM boards have been developed. Lastly, this paper prospects for the trunking media gateway based on the ATCA platform,
作为NGN的核心设备,媒体网关提供了PSTN电路交换和分组网包交换的转换。本文综合探讨了媒体网关开发的市场前景、网络基础架构背景、关键技术与应用,和实现结构。
本论文立足于下一代网络NGN,介绍了NGN的基本特征、基础架构、应用模式和功能体系。从理论层面对VoIP的关键技术进行了深入探讨包括保证电话服务质量的关键技术和相关的信令与协议。从应用层面对中继媒体网关在NGN中的应用、组网架构、功能性架构和协议栈架构进行了探讨。从实现层面对中继媒体网关的系统结构进行了全方面和深入的探讨和分析,从而提出了一种典型的可实现的中继媒体网关结构,并且在课题开发期间本人实现了SFM和PIM等核心板卡的开发工作。最后本文基于一种开发式的平台结构ATCA展望了中继媒体网关的实现,并且在课题开发期间本人实现了ATCA的核心交换板卡Hub的开发工作。
The main engines for accelerating telecommunication market include technique innovation, profit increase, competition intensification, and market reallocation. Today, rapid increase on the data business is the trend of the market, with the fact of more users for mobile business than fixed business. Therefore the market trend will focus on the consolidation between voice and data, with new network architecture. The NGN comes out based on the above background.
As a key equipment of NGN, the trunking media gateway provides the conversion between PSTN and packet network. This paper discusses the market foreground, basic network architecture, key techniques and application, and development structure of the trunking media gateway.
This paper introduces the basic features, basic architecture, application mode, and functional system of NGN. From theory point of view, this paper studies the key techniques of VoIP, like quality of service, signaling and protocols. From application point of view, this paper studies the application, network architecture, functional structure and protocols stack-up of the trunking media gateway, to develop an achievable structure of the trunking media gateway. The SFM and PIM boards have been developed. Lastly, this paper prospects for the trunking media gateway based on the ATCA platform,
引文
[1] ITU-T Recommendation H.323 (1998): " Packet-based multimedia communication".
[2] ITU-T Recommendation E.164 (1997):"The international public telecommunications numbering plan".
[3] ITU-T Recommendation H.245 (1998):"Control protocol for multimedia communication".
[4] ITU-T Recommendation H.225.0 (1998): " Call signaling protocols and media stream packetization for packet based multimedia communication systems".
[5] ITU-T Recommendation G.711: "Pulse code modulation (PCM) of voice frequencies".
[6] ITU-T Recommendation G.723.1: "Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s".
[7] ITU-T Recommendation G.729: "Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear-prediction (CS-ACELP)".
[8] ITU-T Recommendation Q.931: "ISDN user-network interface layer 3 specification for basic call control".
[9] M. Handley, H. Schulzrinne, E. Schooler, J. Rosenberg, "SIP: Session Initiation Protocol" Internet Draft, Internet Engineering Task Force, September 1998, work in progress
[10] ITU-T Recommendation H.246, Interworking of H-series multimedia terminals with H-series multimedia terminals and voice / voiceband terminal on GSTN and ISDN"
[11] Schulzrinne H. et al. RTP: a transport protocol for real-time applications" RFC 1889, Internet Engineering Task Force, 1996
[12] Mauricio Arango, et al. "Media Gateway Control Protocol (MGCP)" Internet Draft, Internet Engineering Task Force, February 1999, work in progress.
[13] ITU-T Recommendation H.GCP: "Gateway Control Protocol", May 1999.
[14] ETSI-TIPHON 15TD068, "iNOW! Inter-domain Telephony v2.1" Sept. 7, 1999
[15] ETSI-TIPHON 11TD041, " H.323 Annex G: Inter-Domain & Inter-Gatekeeper communications" Jan. 1999
[16] ETSI TR 101 329 v1.4.0 TIPHON: General Aspects of Quality of Service
[17] ITU-T Recommendation G.165:" Echo Cancellers", March 1993
[18] ITU-T Recommendation G.168:"Digital Network Echo Cancellers", April 1997
[19] ITU-T Recommendation P.800:"Methods for Subjective Determination of Transmission Quality", Aug. 1996
[20] ITU-T Recommendation P.830 : " Subjective performance assessment of telephony-band and wideband digital codecs", Feb. 1996
[21] ITU-T Recommendation P.861 : " Objective quality measurement of telephony-band (300-3400Hz) speech codecs", Feb. 1996
[22] ITU-T Recommendation H.235(02/98), Security and encryption for H-Series (H.323 and other H.245-based) multimedia terminals.
[23] Iyndon Ong et al. "Architecture Framework for signaling Transport" Internet Draft, Internet Engineering Task Force, June 1999, work in progress.
[24] Braden, R., "Resource Reservation Protocol) (RSVP) -version 1 functional specification", RFC 2205, September 1997
[25] Sundar G. Sankaran, Implementation and evaluation of echo cancellation algorithms, Master thesis, Bradley Department of Electrical Engineering, Virginia Polytechnic Institute and State University.
[26] Gonzalo Camarillo, IP Telephony gateways, Mater's Thesis in Teleinformatics Royal Institute of Technology.
[27] TS 101 313 v0.4.0(1999-01):"Telecommunications and Internet Protocol Harmonization Over Networks(TIPHON); Network Architecture and reference configurations; Phase II: Scenario 1 + Scenario 2"
[28] Rigney, C., "Remote Authentication Dial In User Service (RADIUS)", RFC 2139, April 1997.
[29] Rigney, C., "RADIUS Accounting", RFC 2139, April 1997.
[30] PICMG: Advanced? 3.0 Release 2.0 PICMG? Base Specification, September, 2004.
[31] PICMG: Advanced Mezzanine Card Specification, September, 2004.
[32] 姚天任,数字语音处理,华中理工大学出版社,1992 年
[33] 网络换代的技术走向,邬贺铨
[34] 对下一代网的期待与思考,邬贺铨
[35] H.248 媒体网关控制协议,2003.12,中国电信集团公司
[36] 下一代网络(NGN)与中国信息业的由大到强的探讨,2004.4,钱宗珏
[37] NGN 问题及其自适应资源管理策略,2004.6,陈如明
[38] Voice over Packet: NGN Trunk Gateway Generic Requirements, Telcordia Technologies
[39] Voice over Packet: NGN Access Gateway Generic Requirements, Telcordia Technologies
[40] Voice over Packet (VoP): Next Generation Network (NGN) Signaling Gateway Generic Requirements, Telcordia Technologies
[41] Voice over Packet: NGN Call Connection Agent Generic Requirements, Telcordia Technologies
[42] Voice over Packet: NGN Element Management System (EMS) Generic Requirements, Telcordia Technologies
[43] Generic Requirements for Voice Over Packet End-to-End Performance, Telcordia Technologies
[44] International Softswitch Consortium Reference Architecture, Softswitch Consortium
[45] ATIS NGN-FG Draft Framework, Issue 1.02, 19 August 2004
[46] Next Generation Networks: PSTN Data Offload. Detailed Solution Specification, P. Harris, November 2001, Ed. 0.13.
[47] Next Generation Networks: Trunking Class 4 Tandem Solution. Detailed Solution Specification, Mark Shannon, August 2001, Ed. 0.8.
[48] ISC NGN Reference Architecture
[49] Media Gateway Control Protocol (MGCP) IETF RFC 2705
[50] Gateway Control Protocol, ITU-T H.248
[51] Voice over Packet in Next Generation Networks: An Architectural Framework. SR-4717, Bellcore.
[52] Voice over Packet in Next Generation Networks: An Architectural Framework. Bellcore Special Report SR-4717
[53] 项楚骐,田坦,离散估计导论,哈尔滨船舶工程学院出版社,1989 年 3 月
[2] ITU-T Recommendation E.164 (1997):"The international public telecommunications numbering plan".
[3] ITU-T Recommendation H.245 (1998):"Control protocol for multimedia communication".
[4] ITU-T Recommendation H.225.0 (1998): " Call signaling protocols and media stream packetization for packet based multimedia communication systems".
[5] ITU-T Recommendation G.711: "Pulse code modulation (PCM) of voice frequencies".
[6] ITU-T Recommendation G.723.1: "Dual rate speech coder for multimedia communications transmitting at 5.3 and 6.3 kbit/s".
[7] ITU-T Recommendation G.729: "Coding of speech at 8 kbit/s using conjugate-structure algebraic-code-excited linear-prediction (CS-ACELP)".
[8] ITU-T Recommendation Q.931: "ISDN user-network interface layer 3 specification for basic call control".
[9] M. Handley, H. Schulzrinne, E. Schooler, J. Rosenberg, "SIP: Session Initiation Protocol" Internet Draft, Internet Engineering Task Force, September 1998, work in progress
[10] ITU-T Recommendation H.246, Interworking of H-series multimedia terminals with H-series multimedia terminals and voice / voiceband terminal on GSTN and ISDN"
[11] Schulzrinne H. et al. RTP: a transport protocol for real-time applications" RFC 1889, Internet Engineering Task Force, 1996
[12] Mauricio Arango, et al. "Media Gateway Control Protocol (MGCP)" Internet Draft, Internet Engineering Task Force, February 1999, work in progress.
[13] ITU-T Recommendation H.GCP: "Gateway Control Protocol", May 1999.
[14] ETSI-TIPHON 15TD068, "iNOW! Inter-domain Telephony v2.1" Sept. 7, 1999
[15] ETSI-TIPHON 11TD041, " H.323 Annex G: Inter-Domain & Inter-Gatekeeper communications" Jan. 1999
[16] ETSI TR 101 329 v1.4.0 TIPHON: General Aspects of Quality of Service
[17] ITU-T Recommendation G.165:" Echo Cancellers", March 1993
[18] ITU-T Recommendation G.168:"Digital Network Echo Cancellers", April 1997
[19] ITU-T Recommendation P.800:"Methods for Subjective Determination of Transmission Quality", Aug. 1996
[20] ITU-T Recommendation P.830 : " Subjective performance assessment of telephony-band and wideband digital codecs", Feb. 1996
[21] ITU-T Recommendation P.861 : " Objective quality measurement of telephony-band (300-3400Hz) speech codecs", Feb. 1996
[22] ITU-T Recommendation H.235(02/98), Security and encryption for H-Series (H.323 and other H.245-based) multimedia terminals.
[23] Iyndon Ong et al. "Architecture Framework for signaling Transport" Internet Draft, Internet Engineering Task Force, June 1999, work in progress.
[24] Braden, R., "Resource Reservation Protocol) (RSVP) -version 1 functional specification", RFC 2205, September 1997
[25] Sundar G. Sankaran, Implementation and evaluation of echo cancellation algorithms, Master thesis, Bradley Department of Electrical Engineering, Virginia Polytechnic Institute and State University.
[26] Gonzalo Camarillo, IP Telephony gateways, Mater's Thesis in Teleinformatics Royal Institute of Technology.
[27] TS 101 313 v0.4.0(1999-01):"Telecommunications and Internet Protocol Harmonization Over Networks(TIPHON); Network Architecture and reference configurations; Phase II: Scenario 1 + Scenario 2"
[28] Rigney, C., "Remote Authentication Dial In User Service (RADIUS)", RFC 2139, April 1997.
[29] Rigney, C., "RADIUS Accounting", RFC 2139, April 1997.
[30] PICMG: Advanced? 3.0 Release 2.0 PICMG? Base Specification, September, 2004.
[31] PICMG: Advanced Mezzanine Card Specification, September, 2004.
[32] 姚天任,数字语音处理,华中理工大学出版社,1992 年
[33] 网络换代的技术走向,邬贺铨
[34] 对下一代网的期待与思考,邬贺铨
[35] H.248 媒体网关控制协议,2003.12,中国电信集团公司
[36] 下一代网络(NGN)与中国信息业的由大到强的探讨,2004.4,钱宗珏
[37] NGN 问题及其自适应资源管理策略,2004.6,陈如明
[38] Voice over Packet: NGN Trunk Gateway Generic Requirements, Telcordia Technologies
[39] Voice over Packet: NGN Access Gateway Generic Requirements, Telcordia Technologies
[40] Voice over Packet (VoP): Next Generation Network (NGN) Signaling Gateway Generic Requirements, Telcordia Technologies
[41] Voice over Packet: NGN Call Connection Agent Generic Requirements, Telcordia Technologies
[42] Voice over Packet: NGN Element Management System (EMS) Generic Requirements, Telcordia Technologies
[43] Generic Requirements for Voice Over Packet End-to-End Performance, Telcordia Technologies
[44] International Softswitch Consortium Reference Architecture, Softswitch Consortium
[45] ATIS NGN-FG Draft Framework, Issue 1.02, 19 August 2004
[46] Next Generation Networks: PSTN Data Offload. Detailed Solution Specification, P. Harris, November 2001, Ed. 0.13.
[47] Next Generation Networks: Trunking Class 4 Tandem Solution. Detailed Solution Specification, Mark Shannon, August 2001, Ed. 0.8.
[48] ISC NGN Reference Architecture
[49] Media Gateway Control Protocol (MGCP) IETF RFC 2705
[50] Gateway Control Protocol, ITU-T H.248
[51] Voice over Packet in Next Generation Networks: An Architectural Framework. SR-4717, Bellcore.
[52] Voice over Packet in Next Generation Networks: An Architectural Framework. Bellcore Special Report SR-4717
[53] 项楚骐,田坦,离散估计导论,哈尔滨船舶工程学院出版社,1989 年 3 月