End-to-End QoS Improvement using IPv6 Header Reduction over MPLS

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 (LSPPHS), 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, LSPPHS 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 Terms The 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.