Motivation

Towards the ultimate migration to interoperable and harmonized network architectures, there is an industry requirement to provide global roaming and seamless mobility for the users of different access technologies and/or different operators so that they can enjoy seamless services while moving within or across networks. The work on mobility management and fixed mobile convergence are based on the MM requirements established in Q.1706/Y.2801 and Q.1707/Y.2801 and the FMC requirements established in Q.1762/Y.2802. The work includes all aspects required in terminals, customer networks, access networks (both wired and wireless), core networks and application services.

Recommendations under responsibility of this Question include: Q.1706/Y.2801 and Q.1707/Y.2804, Q.176x/Y.280x series of Recommendations.

Question

Study items to be considered include, but are not limited to:

• What is needed to support global roaming and seamless mobility and delivery of services within or across networks for both IMT and NGN?
• What is needed to provide access independent services across existing and evolving IMT and fixed networks?
• What enhancements to existing Recommendations are required to provide energy savings directly or indirectly in information and communication technologies (ICTs) or in other industries? What enhancements to developing or new Recommendations are required to provide such energy savings?

Tasks

Tasks include, but are not limited to:

• Identify or define the user and operator’s perspective of mobility management capabilities for both IMT and NGN.
• Develop the functional requirements for mobility management capabilities for both IMT and NGN.
• Develop the architecture (interrelationship) and definition of the functional entities required to provide mobility management capabilities for both IMT and NGN.
• Develop the information flows and the timing of the flows between functional entities to provide the necessary mobility management capabilities for both IMT and NGN.
• Develop the actions of the functional entities upon receiving an information flow necessary for mobility management capabilities for both IMT and NGN.
• Allocate the functional entities to physical entities in order to determine which interfaces can use existing protocols or enhancements to existing protocols and which interfaces need protocol development for mobility management capabilities for both IMT and NGN.
• For those interfaces requiring enhancements to existing protocols, provide the functional requirements to the standards body that develops the protocol.
• For those interfaces requiring new protocols, determine the appropriate body for the protocol development, provide the functional requirements to that standards body, and if necessary develop the protocol under this Question.
• Identify and study the applicability of convergence related evolving IMT-standards in the context of the NGN architecture and FMC requirements and document these.
• Develop convergence proposals for evolving IMT networks with evolving fixed networks including aspects related to core network control of customer network equipment and document these for consideration by SDOs as part of their evolution plans.
• Identify and study architectural and network interface issues relating to FMC specific functions in the overall NGN architecture, and document these.

Relationships

The execution of tasks of this Question will require close coordination and collaboration with:

Recommendations: Q/Y-series of Recommendations

Questions:

Study groups: ITU-T study groups dealing with: NGN related studies on scenarios and service descriptions, numbering, naming, addressing and routing, security, QoS and network performance, signaling and control, multimedia. ITU-R study groups dealing with: Broadcasting service, Terrestrial services

Standardization bodies:

• 3GPPs
• IETF
• IEEE
• other relevant bodies