In 802.16 standards, PHS suppresses redundant parts of payload header in MAC service data unit. This paper proposes Label Switched Path-Payload Header Suppression (LSP-PHS), in which an MPLS-enabled backbone route compresses packets over an MPLS LSP without compression or decompression cycles at each router. It has two main contributions for MPLS-IPv6 header compression. First, LSP-PHS adds a new facility (MPLS/PHS) to the existing MPLS facilities. Second, it provides an analysis of the effect of implementing LSP-PHS on real-time and non-real-time IPv6 traffic in terms of QoS metrics. The implementation results using NS 2.34 show QoS improvement for real-time and nonreal-time traffic.
General TermsThe static fields of IPv6 header represent redundant information (overhead) in data transmission over network. IPv6 Header suppression over MPLS optimizes end-to-end QoS of heterogeneous traffic.
Wireless ad hoc networks are a type of wireless network that can be easily created without the need of network infrastructure or central administration. Unfortunately, wireless ad hoc networks suffer from some limitations related to the bandwidth leakage. So a proper data flow mechanism should be used to save the bandwidth consumption. So we proposed an XCAST based routing protocol (P-XCAST) to be used in wireless ad hoc networks, but XCAST was initially designed for wired network and there is an absence of software implementation. Our P-XCAST routing protocol is based on modifying route request control packets mechanism to build the network topology and route the data packet which hold the list of destination by classify the P-XCAST list of destinations according to similarity on their hop count number, to minimize the bandwidth consumption by sending one data packet instead of sending n packets equal to n destinations. In this paper, we have tested P-XCAST QoS parameters using background many-to-many applications under different groups' size and compare these results with AoDV and WRP routing protocols. The results of simulation reflect a better QoS performance parameters compared with AoDV and WRP routing protocols.
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