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The Differentiated Services architecture represents a highly scalable architecture for deployment of Quality of Services across the next-generation Internet. The Differentiated Services enable the packets that pass through network devices operating on layer 3 information, such as routers, to have their relative priority differentiated from one another. With Differentiated Services marking, Layer 3...
With the development of network technology, people's demand on real-time and multimedia feature of the network services has become more and more sophisticated, that requiring Quality of Service of Next Generation Networks with high features. Firstly, this thesis systematically analyzes the characteristics and limitations of IntServ and DiffServ which supports the mechanisms of QoS. Secondly, describes...
On the analysis of QoS control mechanism of IMS architecture in 3GPP, this paper proposed a DiffServ-based QoS control mechanism of the IMS network, using MPLS bearing technologies, from the core network and the bearer network to achieve the end to end QoS control of IMS network.
Multi Protocol Label Switching (MPLS) is choice of future technology as it has capability to perform traffic engineering. IEEE 802.11e Medium Access Control (MAC) is an emerging supplement to the IEEE 802.11 Wireless Local Area Network (WLAN) standard to support Quality-of-Service (QoS). The 802.11e MAC is based on both centrally-controlled and contention-based channel accesses. This paper discusses...
Multiprotocol Label Switching (MPLS) is an Internet Engineering Task Force (IETF) specified framework that provides for the efficient designation, routing, forwarding and switching of traffic flows through the network. MPLS is a versatile solution to address the problems faced by present-day networks like speed, scalability, quality-of-service (QoS) management, and traffic engineering. MPLS carries...
In this paper, we discuss the difficulties Reserved Bandwidth Mechanisms for networks-on-chip by MPLS packet-forwarding technologies. Then, we compare these mechanisms in Network-On-Chip that is based on applying the well-known MPLS technology of large-scale computer networks to the on-chip environment. The NS-2 network simulator is used to evaluate the concept for a typical communications scenario...
We propose a combination of Mesh topology and Bisection routing in MPLS and IP network-on-chip which can increase Communication load with quality of service which is suitable for multimedia applications. We compare the performance of 2d-Mesh architectures in the sense of on chip network design methodology. The simulations of the architectures are done with two-dimensional Mesh topologies that used...
In the MPLS-based mobile IPv6 network, when mobile node performs handover, it needs to rebuild label switching path, which impacts the handover delay and causes packets loss. Reused parts of the path overcome the above reasons, which propose a cross-router (CR) algorithm. It modifies the label information base (LIB), that is, increases two fields: the mobile node address and the time counter. When...
Increases in network traffic due to the expansion of IP broadcast services in recent years have stimulated the requirement of performance and capability in transport network. As an attractive candidate to support the packet switching functionality envisioned in converged next generation transport systems, T-MPLS is gained more attentions to find out its characteristics. This paper describes a T-MPLS...
Until now, in the traditional IP network, the data packets take systematically the shortest path between two nodes through a core network. However, this system presents a major inconvenience: all the traffic follows the shortest path to go from the source to the destination. So the clutter state in a part of the network will be problematic. Today the new technology MPLS-TE permits to share the data...
This paper presents a generic self-aware solution to guarantee the security of PTN network on ECMP condition. This mechanism, called OAM detection and multipath switching (ODMS) has two points. The first one is sending specific OAM packets periodical to detect out of order status of data flow. The second is switching the routing paths in variable periods according to the flowpsilas out of order proportion...
The recent evolution of IP networks are seeing IP applications becoming more complex and requiring higher bandwidth consumption. More recently, IP networks are employing multi protocol label switching (MPLS) which offers better switching and enables virtual private network (VPN). However, the service quality is becoming a major issue in MPLS networks due to having to accommodate the higher bandwidth...
There are some disadvantage in traditional "special line" networking, IP network, frame relay and the ATM network. A VPN networking project which based on MPLS is put forward in order to solve the problem. Then analyze the realization of MPLS VPN. The simulation principle, simulation process and simulation scenes are introduced by OPNET, get the results that MPLS VPN has lower delay and...
Guarantee of QoS (quality of service) and mobility management are important research areas in NGN (next generation networks). Most people have been taking a route of mobile IP over MPLS (MIoM) to meet such challenge. However, MIoM has a drawback considering that MPLS itself does not have any direct control over transmission at the physical layer, instead, it has to rely on existing data link layer...
In this paper we propose QoS based distributed multipath routing algorithm for IPv6 (QoS-MPR). The algorithm is able to work alongside traditional routing algorithms and it can construct label switched paths in order to provide rigorous QoS guarantees. QoS-MPR is developed to work with differentiated services architecture and its capability to establish label switched paths allows us to inject more...
Traditionally, IP networks offer a single, best effort class-of-service. In order to support multiple services, the converged IP network must provide Quality of Service (QoS). One of the most difficult QoS areas is named as congestion avoidance. Today??s router implementations depend solely on RED or lately WRED (Weighted Random Early Detection) for this function. However, two attributes minimize...
The Internet Protocol version 6 (IPv6) protocol represents an emerging networking capability designed to enhance transport, management and security of IP packets through the networks. IPv6 packet header required for this protocol is much larger than that of the current IPv4 protocol. The processing of IPv6 packets can be complex depending on how many packet header options are needed for a given mode...
Broadcast TV distribution over an IP network requires stringent QoS constraints, such as low latency and loss. The main challenge to achieving these QoS objectives is how to design the network to respond to network failures. Streaming content in IPTV is typically delivered to the distribution points on the IP backbone using IP multicast, and in the case being considered, with protocol independent...
Next generation wireless networks will encompass a wide range of heterogeneous technologies in the radio access part. In such networks, the all-IP paradigm has been identified as a promising solution that will contribute benefits by providing IP-based transport through the radio and core network parts. However, this concept requires a precise management of the userpsilas mobility, especially in order...
End-to-end (e2e) quality of service (QoS) is the key target to be achieved in order to successfully support high quality real-time services. While ISDN, SDH and ATM provide service classes that natively support constant bit-rate transmission tunnels, i.e. provide circuit switching that offers constant bandwidth for the entire duration of a service, packet switched technologies natively do not provide...
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