Project background: we are engaged in research on service management for mobile Internet. It is well known that Internet will primarily become a service-driven-network, and services will be differentiated. The motivation for service management is to make service management automation, and the users will discovery all kinds of services provided by service providers conveniently. In order to reach theses goals, the one of the key issues for service description, or service
definition must be resolved. So, we research below three aspects’ issues: the firstly, the application services are classified, all the properties for every type of service are researched. Secondly, in order to model the service data model, we build the meta-model to describe the service data model, based on these meta-models, a general service data model is built in a kind of oriented-object modeling language, EXPRESS. Finally, based on the service data model described by EXPRESS and the definition for service template, a concrete service template can be generated by a tool for generating
service template automatically.
With evolution of Internet, next generation Internet primarily is a network-service-driven. In the future, Especially, Telecommunication network, computer network and wireless mobile network will be merged into an all-IP network,
services provided by this large scale network will increase by exponent. This will result in some critical problems--how to effectively manage these services provided by such network to make service users obtain their QoSguaranteed-service at anytime and anywhere. Study shows that the interaction between service providers and service
users, in practice, is a service level agreement (SLA) process. Therefore, SLA acts as quite importance, In this paper, a
kind of perspective of using service location protocol (SLP) to implement SLA is proposed based on fully researching
of SLP. The main idea is as follow: information of SLA object can be bound to user agents' (UA) request messages.
Comparison with conventional method, it not only cuts down the agreement numbers between service providers and
service users, but also saves network bandwidth and guarantees QoS.
With the development of Internet technology, especially the conditions of wireless and mobility be migrated, more user's tasks with different QoS requirement will be implemented in Internet. However, user will front a network which state changes from the static to the dynamic, the QoS requirement will changes from the one for single network condition to the other for several heterogeneous. In the face of the complexity of the next generation network, traditional QoS concept model will not suit for this condition. In this paper, we propose a new QoS concept model QoSw for the next generation network. In QoSw, we define Network-space N and User-space U conceptions and analyze the mapping relations between N and U. We enlarge the scales of network QoS guarantee from the network-level for user's physical resource needs plus both the application-level for the application characteristics and the user-level characteristic for the user characteristics. Finally, the policy format of the QoS requirement can express better the semantics for user's needs, this will better adapt to the next generation network conditions and have a better expression for use's personality.
The paper is related to TCP performance enhancement in Buffer Management of Mobile IPv6 where transmission control protocol is used as transport layer protocol. A mechanism that improves TCP performance in buffer management for Mobile IPv6 is proposed when handovers are normally taken place. By this mechanism, MB-aware routers can send
KEYWORDS: Internet, Network security, Standards development, Mobile communications, Information security, Network architectures, Mobile devices, Manganese, Signal attenuation, Wireless communications
Mobile IPv6 has received tremendous attention from the cellular telephony industry for use in the next generation networks. This paper starts with recent development of Mobile IPv6 technologies and its standards, and explores remaining issues such as fast handover, smooth handover, mobility managements, AAA, QoS, security and scenarios in its deployment, with particular attention to IPv6.
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