ปัจจุบัน ผู้ประกอบการโทรคมคมทั่วโลกอยู่ระหว่างการหาซูโลชั่นใหม่ๆ เพื่อตอบสนองความต้องการของตลาด ผู้บริโภคและรัฐบาลมีความต้องการให้ทุกบ้านสามารถเข้าถึงอินเทอร์เน็ตความเร็วสูง ธุรกิจมีความต้องการมีโครงข่ายเป็นของตนเอง
เพื่อตอบสนองความต้องการของตลาด วิสัยทัศน์ การมีโครงข่ายยุคใหม่ที่ทันสมัย (Next Generation Network—NGN) หรือ โครงข่ายเดียว ที่ตอบสนองได้ทุกบริการจึงกำเนิดขึ้น
ประโยชน์ที่คาดว่าจะได้รับจาก NGN คือ เพิ่มประสิทธิภาพการปฏิบัติงาน ลดค่าใช้จ่ายในการดำเนินงานของผู้ประกอบการโทรคมนาคม เพิ่มความรวดเร็วในการนำบริการใหม่สู่ตลาด เพิ่มรายได้จากบริการใหม่ เช่น IPTV
การพัฒนาไปสู่โครงข่าย NGN นั้น ผู้ประกอบการโทรคมคมจะต้องพัฒนา 3 เรื่องสำคัญ คือ 1) โครงข่ายหลัก (Core Network) 2) โครงข่ายเข้าถึง (Access Network) และ 3) บริการและ การบริหารจัดการบริการ
โครงข่ายหลักต้องพัฒนาไปสู่โครงข่ายเดียว ที่สามารถรองรับบริการได้ทั้ง เสียง ภาพ และข้อมูล เป็นการพัฒนาจากโครงข่ายเดียว-บริการเดียว ไปสู่ โครงข่ายเดียว-หลายบริการ
โครงข่ายเข้าถึง ต้องพัฒนา จากโครงข่ายที่มีข้อจำกัดเรื่องความเร็วในการรับส่งข้อมูลไปสู่โครงข่ายความเร็วสูง โครงข่ายเข้าถึงต้องมีหลากหลายให้เลือกทั้งทางสายและไร้สาย มีความเร็วที่สามารถขยายได้ตามความต้องการ และ มีบริการความเร็วที่ Upload และ Download เร็วเท่ากันให้เลือกเพื่อตอบสนองความต้องการของผู้ใช้บางกลุ่ม
บริการและ การบริหารจัดการบริการ ต้องพัฒนาไปสู่โครงข่าย ที่สามารถตรวจสอบความมีตัวตนได้มีประสิทธิภาพ สามารถกำหนดนโยบายการใช้งาน สามารถความคุมการใช้งานเมื่อมีการเคลื่อนที่ได้อย่างดี ผู้ใช้สามารถใช้หลายบริการในเวลาเดียวกัน และ ผู้ประกอบการโทรคมนาคมต้องสามารถให้บริการเป็นรายบุคคลได้ตามความต้องการของผู้ใช้ นอกจากนั้น ผู้ประกอบ ฯ ต้องสามารถพัฒนาบริการใหม่ใหม่ได้
วันศุกร์ที่ 13 มีนาคม พ.ศ. 2552
วันอังคารที่ 2 กันยายน พ.ศ. 2551
What do we mean by NGN?
There are numerous views of NGN.
Korea Telecom--Broadband convergence Network (BcN),
BT--21st Century Network (21CN),
Deutsche Telekom --Telekom Global Network (TGN) and
NTT uses Resonant Communication Network Architecture (RENA).
For some, NGN simply means migration from a PSTN to an IP-based network. For others, it is a more specific reference to advances such as international call IP trunking and IP in the local loop.
Some definitions consider an end-to-end network capable of
Supporting bandwidth of 20 Mbps or more as prerequisite on the basis that this amount of bandwidth would be the minimum required to support the next generation of services that cannot be delivered using current broadband technologies.
At the broadest level, NGN can simply refer to a very fast end-to-end IP-based network. At the technical level, NGN is distinguished from legacy or traditional circuit switched networking in that all information is transmitted via packets, which are labelled according to type, such as data and voice, and handled accordingly by traffic management equipment. It can be deployed over a number of platforms such as fibre, cable, wireless and upgraded copper-based networks. This flexibility heralds a shift from a “one network, one service” approach, to a “one network, many services” approach.
A next-generation network is generally divided into two parts: the next-generation core network and the next-generation access network.
It is important to highlight, however, that NGN involves the de-coupling or separation of the transport layer of the network from the services and applications layer that lies on top of that transport. The independence of service and transport
layers has significant implications for competition and pricing.
For example, by separating transport and service layers, a provider can enable new services by defining it directly at the service layer without considering the transport layer. NGN then is a catch-all phrase for the infrastructure that will enable advanced new services, while continuing to support existing services. It will support fixed, mobile and nomadic users as well as have the ability to carry voice, data and multimedia interactive services.
These networks enable a range of new service offerings in a multi-vendor environment. As factors like interoperability and QoS are critical, work is underway in numerous organizations concerned with standards to ensure that NGN evolution and migration is being carried out coherently and effectively. Already, there are various interoperability issues between different VoIP soft-client providers that, if not addressed, will hold back the development of this service segment.
Some of the standards organizations working to address interoperability issues include the European Telecommunications Standards Institute (ETSI) – specifically
the Telecoms and Internet Converged Services and Protocols for Advanced Networks (TISPAN), the ITU Standardization Bureau (ITU-T) – specifically the NGN Global Standards Initiative (NGN-GSI), the 3rd Generation Partnership Project
(3GPP) and the Fixed Mobile Convergence Forum.
There are also many organizations such as the European Regulators Group (ERG), the European Conference of Postal and Telecommunications Administrations (CEPT), ITU and OECD,which are currently engaged in IP and NGN policy and regulatory research. Many projects are also taking place on a regional basis. For example, in Europe the GÉANT project and the Task Force on Next-Generation Networking (TF-NGN)were established for the collective research and deployment of NGN in 2001. The NGN Framework Options Group
(NGN FOG) in Australia, the Ubiquitous Networking Forum (UNF) in Japan and the Next-Generation Convergence Network (NGcN) Forum in Korea are also joint activities related to NGN technology and service development.
As mentioned above, however, while there are certain
characteristics associated with NGN, there is not as yet a single standard or reference point. This may change as work in these organizations continues.
A Next-Generation Network is defined by ITU as “A packet-based network able to provide telecommunication services and able to make use of multiple broadband, QoS-enabled transport technologies and in which service-related functions are independent from underlying transport-related technologies. It enables unfettered access for users to networks and to competing service providers and/or services of their choice. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users.” Source: ITU-T Recommendation Y.2001.
Source: ITU
Korea Telecom--Broadband convergence Network (BcN),
BT--21st Century Network (21CN),
Deutsche Telekom --Telekom Global Network (TGN) and
NTT uses Resonant Communication Network Architecture (RENA).
For some, NGN simply means migration from a PSTN to an IP-based network. For others, it is a more specific reference to advances such as international call IP trunking and IP in the local loop.
Some definitions consider an end-to-end network capable of
Supporting bandwidth of 20 Mbps or more as prerequisite on the basis that this amount of bandwidth would be the minimum required to support the next generation of services that cannot be delivered using current broadband technologies.
At the broadest level, NGN can simply refer to a very fast end-to-end IP-based network. At the technical level, NGN is distinguished from legacy or traditional circuit switched networking in that all information is transmitted via packets, which are labelled according to type, such as data and voice, and handled accordingly by traffic management equipment. It can be deployed over a number of platforms such as fibre, cable, wireless and upgraded copper-based networks. This flexibility heralds a shift from a “one network, one service” approach, to a “one network, many services” approach.
A next-generation network is generally divided into two parts: the next-generation core network and the next-generation access network.
It is important to highlight, however, that NGN involves the de-coupling or separation of the transport layer of the network from the services and applications layer that lies on top of that transport. The independence of service and transport
layers has significant implications for competition and pricing.
For example, by separating transport and service layers, a provider can enable new services by defining it directly at the service layer without considering the transport layer. NGN then is a catch-all phrase for the infrastructure that will enable advanced new services, while continuing to support existing services. It will support fixed, mobile and nomadic users as well as have the ability to carry voice, data and multimedia interactive services.
These networks enable a range of new service offerings in a multi-vendor environment. As factors like interoperability and QoS are critical, work is underway in numerous organizations concerned with standards to ensure that NGN evolution and migration is being carried out coherently and effectively. Already, there are various interoperability issues between different VoIP soft-client providers that, if not addressed, will hold back the development of this service segment.
Some of the standards organizations working to address interoperability issues include the European Telecommunications Standards Institute (ETSI) – specifically
the Telecoms and Internet Converged Services and Protocols for Advanced Networks (TISPAN), the ITU Standardization Bureau (ITU-T) – specifically the NGN Global Standards Initiative (NGN-GSI), the 3rd Generation Partnership Project
(3GPP) and the Fixed Mobile Convergence Forum.
There are also many organizations such as the European Regulators Group (ERG), the European Conference of Postal and Telecommunications Administrations (CEPT), ITU and OECD,which are currently engaged in IP and NGN policy and regulatory research. Many projects are also taking place on a regional basis. For example, in Europe the GÉANT project and the Task Force on Next-Generation Networking (TF-NGN)were established for the collective research and deployment of NGN in 2001. The NGN Framework Options Group
(NGN FOG) in Australia, the Ubiquitous Networking Forum (UNF) in Japan and the Next-Generation Convergence Network (NGcN) Forum in Korea are also joint activities related to NGN technology and service development.
As mentioned above, however, while there are certain
characteristics associated with NGN, there is not as yet a single standard or reference point. This may change as work in these organizations continues.
A Next-Generation Network is defined by ITU as “A packet-based network able to provide telecommunication services and able to make use of multiple broadband, QoS-enabled transport technologies and in which service-related functions are independent from underlying transport-related technologies. It enables unfettered access for users to networks and to competing service providers and/or services of their choice. It supports generalized mobility which will allow consistent and ubiquitous provision of services to users.” Source: ITU-T Recommendation Y.2001.
Source: ITU
ITU-Study Group 13: Next Generation Networks - Q 3/13
Question 3/13 - Principles and functional architecture for NGN
Motivation
A Next Generation Network (NGN) is the practical realization of the Global Information Infrastructure, i.e., the convergence of all services onto a single network, based on the principles contained in Recommendations Y.100 and Y.110. The architectural integration of the formerly discrete packet-switched and circuit-switched networks supporting these services requires evolution of the architectural principles of both types of network. There are trends both to move intelligence toward the edges of the network and to add intelligence into the network. Connectionless network layer services are evolving towards providing virtual circuit-oriented services while circuit-switched network layer services are being realized using packet technology. To establish a common architecture for the convergence among services and networks substantial studies and frameworks are required to: a) ensure interoperability of networks and applications; b) facilitate innovation in the use and application of industry capabilities; and c) facilitate best utilization of the existing telecommunications infrastructure within the NGN architecture.
Question
What new and revised framework Recommendations are required to establish the basis for realizing the converged NGN?
Tasks
- General Reference Model of the NGN
Preparation of a framework to identify the basic architectural composition of the NGN. It will be based on identification of architectural requirements in horizontal and vertical structures involved in providing Telecommunication Services in an NGN environment, including detailed multi-layer aspects in heterogeneous and homogeneous environments, and scalability enhancement across hierarcharchical and multiple domains.
- Infrastructural Roles for NGN scenarios
Application of the principles of Recommendation Y.110 to develop various scenarios in the NGN multi-provider environment.
- Functional Requirements and Architecture of the NGN
Identification of entities, their functions, and reference points, required to provide Telecommunications Services in an NGN functional reference model, taking into consideration the multi-layer impacts on functional architecture, such as addition of new functions and/or modification of existing functions. Then develop functional configuration models, which will show arrangement of each function, and functional architecture models explaining relationships among different functions in horizontal and vertical aspects.
- Identification capabilities for the NGN
Study the application, extension, combination of existing, or development of a new, naming, numbering and addressing scheme to meet the needs of the NGN.
- Convergence Scenarios
Develop various convergence scenarios, identifying the related technical issues and their practical implications.
- Reference Model for Customer Manageable NGN Networks
Develop models to allow customers to create, configure, customize, and otherwise manage the network services/resources allocated to them by the network provider, and to involve third parties in the development of applications.
- Operation of services over NGN and non-NGN networks
The converged NGN will not be realized instantaneously. This task will provide a number of scenarios and mechanisms aimed at supporting the overall functioning of services across a hybrid of existing and converged NGN.
- Implementation Framework related to provision of Emergency Communications in NGNs
Identify the technical issues, measures, and functions of particular NGN technologies that may be involved in meeting the requirements and capabilities of RecommendationY.1271.
- Maintenance of existing Recommendations
Maintenance of the following Recommendations is included:
Y.100 GII – Scenario Development Methodology
Y.110 GII – Principles and Framework Architecture
Y.1001 – IP Framework
Y.140 – Reference Point of Interconnection Framework
Y.1271 – Requirements and capabilities for emergency communications
Relationships
- Recommendation: All NGN related Recommendations
- Questions: All NGN related Questions
- Study groups: All NGN related Study Groups
- Standardization bodies, fora and consortia:
ITU-R Study Groups as appropriate
IETF working groups on NGN related matters
ETSI working groups on NGN related matters
ISO working on NGN related matters
3GPP/3GPP2 working groups on NGN related matters
Source: ITU-T, 2008
Motivation
A Next Generation Network (NGN) is the practical realization of the Global Information Infrastructure, i.e., the convergence of all services onto a single network, based on the principles contained in Recommendations Y.100 and Y.110. The architectural integration of the formerly discrete packet-switched and circuit-switched networks supporting these services requires evolution of the architectural principles of both types of network. There are trends both to move intelligence toward the edges of the network and to add intelligence into the network. Connectionless network layer services are evolving towards providing virtual circuit-oriented services while circuit-switched network layer services are being realized using packet technology. To establish a common architecture for the convergence among services and networks substantial studies and frameworks are required to: a) ensure interoperability of networks and applications; b) facilitate innovation in the use and application of industry capabilities; and c) facilitate best utilization of the existing telecommunications infrastructure within the NGN architecture.
Question
What new and revised framework Recommendations are required to establish the basis for realizing the converged NGN?
Tasks
- General Reference Model of the NGN
Preparation of a framework to identify the basic architectural composition of the NGN. It will be based on identification of architectural requirements in horizontal and vertical structures involved in providing Telecommunication Services in an NGN environment, including detailed multi-layer aspects in heterogeneous and homogeneous environments, and scalability enhancement across hierarcharchical and multiple domains.
- Infrastructural Roles for NGN scenarios
Application of the principles of Recommendation Y.110 to develop various scenarios in the NGN multi-provider environment.
- Functional Requirements and Architecture of the NGN
Identification of entities, their functions, and reference points, required to provide Telecommunications Services in an NGN functional reference model, taking into consideration the multi-layer impacts on functional architecture, such as addition of new functions and/or modification of existing functions. Then develop functional configuration models, which will show arrangement of each function, and functional architecture models explaining relationships among different functions in horizontal and vertical aspects.
- Identification capabilities for the NGN
Study the application, extension, combination of existing, or development of a new, naming, numbering and addressing scheme to meet the needs of the NGN.
- Convergence Scenarios
Develop various convergence scenarios, identifying the related technical issues and their practical implications.
- Reference Model for Customer Manageable NGN Networks
Develop models to allow customers to create, configure, customize, and otherwise manage the network services/resources allocated to them by the network provider, and to involve third parties in the development of applications.
- Operation of services over NGN and non-NGN networks
The converged NGN will not be realized instantaneously. This task will provide a number of scenarios and mechanisms aimed at supporting the overall functioning of services across a hybrid of existing and converged NGN.
- Implementation Framework related to provision of Emergency Communications in NGNs
Identify the technical issues, measures, and functions of particular NGN technologies that may be involved in meeting the requirements and capabilities of RecommendationY.1271.
- Maintenance of existing Recommendations
Maintenance of the following Recommendations is included:
Y.100 GII – Scenario Development Methodology
Y.110 GII – Principles and Framework Architecture
Y.1001 – IP Framework
Y.140 – Reference Point of Interconnection Framework
Y.1271 – Requirements and capabilities for emergency communications
Relationships
- Recommendation: All NGN related Recommendations
- Questions: All NGN related Questions
- Study groups: All NGN related Study Groups
- Standardization bodies, fora and consortia:
ITU-R Study Groups as appropriate
IETF working groups on NGN related matters
ETSI working groups on NGN related matters
ISO working on NGN related matters
3GPP/3GPP2 working groups on NGN related matters
Source: ITU-T, 2008
ITU-T Study Group 13: Next Generation Networks- Q 2/13
Question 2/13 - Requirements, and implementation scenarios for emerging services in NGN
Motivation
With the rapid growth of IP services, a demand has been continuously increasing to enhance the network capabilities of multi-service networks. Emerging services and evolution of existing ones, and their variety of deployment scenarios, are introducing more and more requirements on these network capabilities.
In the context of next generation multi-service network environments, study is required to extensively define the requirements imposed by these services and to specify the related service and network architectures, with the goal to maximize usage of common service capabilities and functional building blocks. Development of implementation scenarios for these services is also needed.
Key requirements to be considered are support of seamless end-to-end service operations, wireless/fixed technology-independent service access, ubiquitous support of mobile and fixed service users, and support of both IPv4 and IPv6 protocol technologies.
The MPLS/GMPLS technology, originally defined in IETF and now included in a number of ITU-T Recommendations, is gaining wide acceptance as a promising convergence technology for the next generation core networks. In order to drive the effective deployment of IP/ (G) MPLS based networks and make them capable to support evolving requirements, it is then needed to perform the above study in the context of IP/ (G) MPLS based core network scenarios.
VPN services constitute an emblematic case of evolving services in next generation network environments. Emerging requirements include simultaneous support of data, voice and multimedia flows, multicast, QoS, enhanced security, integrated mobility, service interworking scenarios, complex connectivity scenarios, customer-on-demand capabilities, integration of layer 1, 2 and 3 VPN services over common network infrastructure, multi-layer service architectures, IPv6 VPNs, service OAM capabilities, user location, identification and authorization.
Some VPN characteristics, such as such as service-transport layer separation, virtualization of resources, multipoint connectivity, and auto-discovery capabilities, assign these services a key role in service and network evolution towards next generation multi-service network environments.
As a consequence, the current study and development of Recommendations in the VPN service domain need to be continued and extended to encompass these emerging needs, ensuring parallel close relationship with the NGN-related developments.
Recommendations in force: Y.1310, Y.1311, Y.1311.1, Y.1312, Y.1261, Y.1281.
Question
Study will consider emerging services in next generation multi-service network environments, with a particular focus on IP/(G)MPLS based core network scenarios.
- Requirements of emerging services in next generation multi-service network environments, such as IP telephony services, mobility services, interactive real time end-to-end communications, data communication services, generalized multi-layer VPN services, content delivery services, etc. Requirements include support of seamless end-to-end service operations, wireless/fixed technology-independent service access, ubiquitous support of mobile and fixed service users, and support of both IPv4 and IPv6 protocol technologies.
- Service and network architectures of emerging services in next generation multi-service network environments, including multi-layer aspects, with the goal to maximize usage of common service capabilities and functional building blocks across different services. Capabilities include those for support of Quality of Service, Traffic Engineering, service provisioning, user location, identification and authorization.
- Implementation scenarios of emerging services in next generation network environments, including study of related mechanisms and technology enhancements to support the specified requirements (such as MPLS label assignment techniques, MPLS multicast and mobility capabilities, multi-layer techniques, etc.)..
- According to above study items, generation of requirements for enhanced capabilities of transport networks (based on IP/ (G) MPLS or alternative technology).
- VPN services being an emblematic case of emerging services in next generation network environments, continuation and extension of current work to cover evolving VPN requirements. This includes service requirements, service and network architectures, and implementation scenarios.
Tasks
- Development of, maintenance and enhancement to the Recommendations in the domain of VPN services (L1 VPN architectures and implementation scenarios, Generic VPN functional decomposition, QOS support in VPNs, VPN Interworking architecture and implementations, …).
- Recommendations currently under way: Y.1313, Y.nbvpn-decomp, Y.vpn-QoS.
- Development of Recommendations on emerging services in next generation multi service network environments (service requirements, service and network architectures, service implementation scenarios).
- Recommendations currently under way: Y.NGN-SRQ, Y.NGN-MOB.
- Coordination with the NGN related Questions (in particular in the areas of NGN services and NGN architectures).
Relationships
- Recommendations: Y-series
- Questions: Q.3, 4, 5, 7, 11/13; 22/15 and 17/12
- Study Groups: ITU-T Study Groups 4, 9, 11, 12, 15, 16, 17, 19
- Standardisation bodies fora and consortia:
IETF (e.g., mpls, ccamp, l2vpn, l3vpn WGs)
ETSI (services and related architectures, fixed/mobile convergence)
3GPP and 3GPP2
MPLS and Frame Relay Alliance (MPLS-related aspects and services)
IEEE 802 LAN/MAN Standards Committee (e.g., Ethernet-based VPN)
OIF on optical transport technologies
Source: ITU-T, 2008
Motivation
With the rapid growth of IP services, a demand has been continuously increasing to enhance the network capabilities of multi-service networks. Emerging services and evolution of existing ones, and their variety of deployment scenarios, are introducing more and more requirements on these network capabilities.
In the context of next generation multi-service network environments, study is required to extensively define the requirements imposed by these services and to specify the related service and network architectures, with the goal to maximize usage of common service capabilities and functional building blocks. Development of implementation scenarios for these services is also needed.
Key requirements to be considered are support of seamless end-to-end service operations, wireless/fixed technology-independent service access, ubiquitous support of mobile and fixed service users, and support of both IPv4 and IPv6 protocol technologies.
The MPLS/GMPLS technology, originally defined in IETF and now included in a number of ITU-T Recommendations, is gaining wide acceptance as a promising convergence technology for the next generation core networks. In order to drive the effective deployment of IP/ (G) MPLS based networks and make them capable to support evolving requirements, it is then needed to perform the above study in the context of IP/ (G) MPLS based core network scenarios.
VPN services constitute an emblematic case of evolving services in next generation network environments. Emerging requirements include simultaneous support of data, voice and multimedia flows, multicast, QoS, enhanced security, integrated mobility, service interworking scenarios, complex connectivity scenarios, customer-on-demand capabilities, integration of layer 1, 2 and 3 VPN services over common network infrastructure, multi-layer service architectures, IPv6 VPNs, service OAM capabilities, user location, identification and authorization.
Some VPN characteristics, such as such as service-transport layer separation, virtualization of resources, multipoint connectivity, and auto-discovery capabilities, assign these services a key role in service and network evolution towards next generation multi-service network environments.
As a consequence, the current study and development of Recommendations in the VPN service domain need to be continued and extended to encompass these emerging needs, ensuring parallel close relationship with the NGN-related developments.
Recommendations in force: Y.1310, Y.1311, Y.1311.1, Y.1312, Y.1261, Y.1281.
Question
Study will consider emerging services in next generation multi-service network environments, with a particular focus on IP/(G)MPLS based core network scenarios.
- Requirements of emerging services in next generation multi-service network environments, such as IP telephony services, mobility services, interactive real time end-to-end communications, data communication services, generalized multi-layer VPN services, content delivery services, etc. Requirements include support of seamless end-to-end service operations, wireless/fixed technology-independent service access, ubiquitous support of mobile and fixed service users, and support of both IPv4 and IPv6 protocol technologies.
- Service and network architectures of emerging services in next generation multi-service network environments, including multi-layer aspects, with the goal to maximize usage of common service capabilities and functional building blocks across different services. Capabilities include those for support of Quality of Service, Traffic Engineering, service provisioning, user location, identification and authorization.
- Implementation scenarios of emerging services in next generation network environments, including study of related mechanisms and technology enhancements to support the specified requirements (such as MPLS label assignment techniques, MPLS multicast and mobility capabilities, multi-layer techniques, etc.)..
- According to above study items, generation of requirements for enhanced capabilities of transport networks (based on IP/ (G) MPLS or alternative technology).
- VPN services being an emblematic case of emerging services in next generation network environments, continuation and extension of current work to cover evolving VPN requirements. This includes service requirements, service and network architectures, and implementation scenarios.
Tasks
- Development of, maintenance and enhancement to the Recommendations in the domain of VPN services (L1 VPN architectures and implementation scenarios, Generic VPN functional decomposition, QOS support in VPNs, VPN Interworking architecture and implementations, …).
- Recommendations currently under way: Y.1313, Y.nbvpn-decomp, Y.vpn-QoS.
- Development of Recommendations on emerging services in next generation multi service network environments (service requirements, service and network architectures, service implementation scenarios).
- Recommendations currently under way: Y.NGN-SRQ, Y.NGN-MOB.
- Coordination with the NGN related Questions (in particular in the areas of NGN services and NGN architectures).
Relationships
- Recommendations: Y-series
- Questions: Q.3, 4, 5, 7, 11/13; 22/15 and 17/12
- Study Groups: ITU-T Study Groups 4, 9, 11, 12, 15, 16, 17, 19
- Standardisation bodies fora and consortia:
IETF (e.g., mpls, ccamp, l2vpn, l3vpn WGs)
ETSI (services and related architectures, fixed/mobile convergence)
3GPP and 3GPP2
MPLS and Frame Relay Alliance (MPLS-related aspects and services)
IEEE 802 LAN/MAN Standards Committee (e.g., Ethernet-based VPN)
OIF on optical transport technologies
Source: ITU-T, 2008
ITU-T Study Group 13: Next Generation Networks
Question 1/13 - Project coordination and release planning for NGN
Motivation
A standardisation programme for NGN (Next Generation Networks) has been introduced to take account of the new situation in telecommunications, characterised by many factors such as open competition between operators due to the total deregulation of markets, explosion of digital traffic, e.g. due to the increasing use of the Internet, increasing demand from users for new multimedia services, increasing demand from users for a general mobility, etc.
A major goal of NGN is to facilitate convergence of networks and services. The common understanding is that the NGN has to be seen as the concrete realisation of concepts defined for the GII. In addition, a clear demand from the market for short-term standards in the field of NGN has been identified.
An NGN Project has been established in the previous study period which has the objective to coordinate ITU-T activities related to the establishment of implementation guidelines and standards for the realisation of NGN.
This project planning for NGN needs to be continued and additionally as the NGN standards and implementations emerge it will be necessary to include release planning in the project activities.
Question
- ensuring that all elements required for interoperability and network capabilities to support applications globally across the NGN are addressed by ITU-T standardization activities.
- coordination of the future development of the NGN Project in cooperation with the ITU Study Groups and with other Standards Development Organisations (SDOs) e.g. the IETF.
- collaboration as appropriate with other SDOs to avoid duplication of standardisation work and identification of additional work necessary.
Tasks
- Developing implementable release plans for NGN evolution – each release phase fulfilling a set of requirements commonly agreed with other groups.
- Insure communication and cooperation amongst study groups and fora related to NGN to achieve the planned results in an official and timely manner.
- Regular updating of the NGN Project
- Publishing reports on progress
- Setting up workshops and other activities as appropriate to increase awareness of the ITU-T work on NGN.
Relationships
ITU-T, ITU-R and ITU-D Study Groups involved in the NGN standardization work.
Liaison with SDOs and other bodies involved in NGN standardization and implementation as appropriate.
Source: ITU-T, 2008
Motivation
A standardisation programme for NGN (Next Generation Networks) has been introduced to take account of the new situation in telecommunications, characterised by many factors such as open competition between operators due to the total deregulation of markets, explosion of digital traffic, e.g. due to the increasing use of the Internet, increasing demand from users for new multimedia services, increasing demand from users for a general mobility, etc.
A major goal of NGN is to facilitate convergence of networks and services. The common understanding is that the NGN has to be seen as the concrete realisation of concepts defined for the GII. In addition, a clear demand from the market for short-term standards in the field of NGN has been identified.
An NGN Project has been established in the previous study period which has the objective to coordinate ITU-T activities related to the establishment of implementation guidelines and standards for the realisation of NGN.
This project planning for NGN needs to be continued and additionally as the NGN standards and implementations emerge it will be necessary to include release planning in the project activities.
Question
- ensuring that all elements required for interoperability and network capabilities to support applications globally across the NGN are addressed by ITU-T standardization activities.
- coordination of the future development of the NGN Project in cooperation with the ITU Study Groups and with other Standards Development Organisations (SDOs) e.g. the IETF.
- collaboration as appropriate with other SDOs to avoid duplication of standardisation work and identification of additional work necessary.
Tasks
- Developing implementable release plans for NGN evolution – each release phase fulfilling a set of requirements commonly agreed with other groups.
- Insure communication and cooperation amongst study groups and fora related to NGN to achieve the planned results in an official and timely manner.
- Regular updating of the NGN Project
- Publishing reports on progress
- Setting up workshops and other activities as appropriate to increase awareness of the ITU-T work on NGN.
Relationships
ITU-T, ITU-R and ITU-D Study Groups involved in the NGN standardization work.
Liaison with SDOs and other bodies involved in NGN standardization and implementation as appropriate.
Source: ITU-T, 2008
NGN Business Models
Next generation core, next generation access and next generation service control will form the next generation networks. Although it is impossible to tell, which business models will emerge and prevail, it is most important not to unnecessarily restrict innovation, evolution and growth.
A next generation environment might look like this:
There will exist many next generation core networks with nearly unlimited bandwidth in the backbone. These networks will be based on IP/MPLS and not be restricted to regional boundaries.
Next generation core networks can be global with access points worldwide or can cover a specific region. Core networks will be inter-connected and will also be connected to various access networks.
Next generation access networks are from a technical perspective local or regional, although alliances between different players might form. Access providers might also provide backbone services but need not do so. Next generation access networks are connected to one or many core networks.
Next generation service control might be developed functionally separated or fully integrated with the infrastructure (next generation access and next generation core). Next generation service control needs to be accessed through the core network by the customer premises equipment. Although the access and the core are seen as technologically transparent for services certain restrictions from a business point of view might apply.
In a pure next generation environment the customer has the choice to connect to different access networks. He or she will also be able to choose the services independently from the access if he or she wants to. There will be bundles of integrated solutions, which might suit the customer's need for a single point of contact. If the market forces work, unbundled access will exist together with bundled products and all will find their respective markets. Access providers on the other hand will have the opportunity to choose between core network providers or provide their own core network.
Service providers will be able to offer their services to some access and core providers but not necessarily to all. Since nobody can foretell this evolution the best way forward is to provide a favourable environment and watch the evolution closely. If the market forces lead to common standards for interoperability and interconnection and to an environment free of bottlenecks, no intervention will be necessary.
Source: On the technology, business models and regulatory aspects of NGN, ETP, 2006
A next generation environment might look like this:
There will exist many next generation core networks with nearly unlimited bandwidth in the backbone. These networks will be based on IP/MPLS and not be restricted to regional boundaries.
Next generation core networks can be global with access points worldwide or can cover a specific region. Core networks will be inter-connected and will also be connected to various access networks.
Next generation access networks are from a technical perspective local or regional, although alliances between different players might form. Access providers might also provide backbone services but need not do so. Next generation access networks are connected to one or many core networks.
Next generation service control might be developed functionally separated or fully integrated with the infrastructure (next generation access and next generation core). Next generation service control needs to be accessed through the core network by the customer premises equipment. Although the access and the core are seen as technologically transparent for services certain restrictions from a business point of view might apply.
In a pure next generation environment the customer has the choice to connect to different access networks. He or she will also be able to choose the services independently from the access if he or she wants to. There will be bundles of integrated solutions, which might suit the customer's need for a single point of contact. If the market forces work, unbundled access will exist together with bundled products and all will find their respective markets. Access providers on the other hand will have the opportunity to choose between core network providers or provide their own core network.
Service providers will be able to offer their services to some access and core providers but not necessarily to all. Since nobody can foretell this evolution the best way forward is to provide a favourable environment and watch the evolution closely. If the market forces lead to common standards for interoperability and interconnection and to an environment free of bottlenecks, no intervention will be necessary.
Source: On the technology, business models and regulatory aspects of NGN, ETP, 2006
Implementations of Next Generation Networks
Operators worldwide are striving to deploy new solutions that can adequately address the demands being placed on them by market and by technological developments:
Demands from businesses for flexible Virtual Private Network (VPN) solutions
Demands from consumers and governments for broadband access to every home
Demands from investors include increased profitability.
As a means to address these challenges and market demands, a new vision is gaining momentum in the telecommunications industry—the vision of one network for all services—a next generation network that delivers:
- The operational efficiency and cost reduction of a common, consistent infrastructure
- Greater speed to market for a much greater variety of services
This evolution to next generation networks is built on a foundation that requires operators to evolve their infrastructure in 3 areas; the core, the access and the service provision/control platform .
Indeed, the core needs to evolve to a next generation core which is in substance a converged IP infrastructure capable of carrying voice, video and data services. This is basically the evolution from a “one network - one service” approach to a “one network -many services” one.
The access needs to evolve to a next generation access reducing any bandwidth bottlenecks that may exist today at the access level: this evolution is not related to any one single access technology but to characteristics of an access infrastructure capable in providing higher and scalable bandwidth, better symmetry and lower contention.
Finally, the management and provision of services needs to evolve to a next generation service control capable in providing features such as Identity Management, Policy Management, Mobility Management, Dynamic Session Management – allowing the operators to provide personalized services on a per user basis and develop innovative services.
Source: On the technology, business models and regulatory aspects of NGN, ETP, 2006
Demands from businesses for flexible Virtual Private Network (VPN) solutions
Demands from consumers and governments for broadband access to every home
Demands from investors include increased profitability.
As a means to address these challenges and market demands, a new vision is gaining momentum in the telecommunications industry—the vision of one network for all services—a next generation network that delivers:
- The operational efficiency and cost reduction of a common, consistent infrastructure
- Greater speed to market for a much greater variety of services
This evolution to next generation networks is built on a foundation that requires operators to evolve their infrastructure in 3 areas; the core, the access and the service provision/control platform .
Indeed, the core needs to evolve to a next generation core which is in substance a converged IP infrastructure capable of carrying voice, video and data services. This is basically the evolution from a “one network - one service” approach to a “one network -many services” one.
The access needs to evolve to a next generation access reducing any bandwidth bottlenecks that may exist today at the access level: this evolution is not related to any one single access technology but to characteristics of an access infrastructure capable in providing higher and scalable bandwidth, better symmetry and lower contention.
Finally, the management and provision of services needs to evolve to a next generation service control capable in providing features such as Identity Management, Policy Management, Mobility Management, Dynamic Session Management – allowing the operators to provide personalized services on a per user basis and develop innovative services.
Source: On the technology, business models and regulatory aspects of NGN, ETP, 2006
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