Mobile Ipv6 Which To Service Quality
When Mobile Node to change Network Connection point, the data packets through the middle of the network domain may change.
Therefore, these network domain, mobile nodes need to provide appropriate packet Service Quality support, so the mobile node running the service quality-sensitive applications can maintain the level of service available.
[TSZ99] proposed a wireless and mobile network signaling protocol, when the mobile Host From one subnet to another subnet, allowing the current location of mobile host in the path set aside resources to establish and maintain. By combining this protocol RS VP tunnel [ZWKT98] and Mobile IP protocol to achieve.
[FZHNS98] solution in the mobile IP network running RSVP signaling problems, optimized routing, and discussed the basic solution to this problem. In the mobile node and Communicate Node modify RSVP, so that mobile IPv6 Address. Allow the fixed network and mobile network data flow between the transmission RSVP.
All of the above services for mobile users, these methods are based on RSVP, and therefore there will be a RSVP scalability problem. IP mobility and the combination of RSVP is [T01] a very complex issue. The combination of Mobile IP and RSVP is very difficult to understand, [T01] tried to solve the integration problem, assuming there is basic agreement in the proper implementation of the premise, to explain how to RSVP and mobile IP host combination.
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In [CK00], the introduction of a new IPv6 option called "quality of service targets." Different depending on the context, quality of service options, or object can be used as objective Hop-by-Hop options, including recognition in the binding update message and binding. As the Hop-by-Hop options, quality of service targets in the middle of the network domain-specific quality of service to trigger the process. This article describes the best of what we, MPLS, Diffserv and IntServ domain quality of service process, which includes all the support possible future use of network quality of service.
Basic idea is to target quality of service as the Hop-by-Hop options on the binding message, the transmission direction and quality of service sensitive to the same data stream (HA to MN, CN to the MN or MN to CN). When the data packets end to end path through the different domains, you need to check the quality of service targets, for the MN's data packets to provide quality of service support.
We know, there are two types of service quality:
Resource reservation (integrated services): quality of service according to application demand for allocation of network resources, subject to the bandwidth Management Strategy. RSVP provides such a mechanism [IntServ].
Priority (differentiated services): the network data stream classification, and bandwidth management strategy based network resource allocation criteria. To support quality of service, classification demanding applications when given priority. [DiffServ] provides this service.
These types of service quality can be applied to separate the application data flow or data flow sets, therefore the other two methods to distinguish the quality of service types:
Each data flow: data flow is defined as a separate, one-way, in two applications (sender and receiver) between the data stream, the only group from the five- Logo (Transport protocol, source address, source port number, destination address and destination port number).
[Key words]: IPv6 Quality of service Comment Large In Small
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