An efficient protection strategy using multiple network coding

Network coding-based protection scheme for Elastic Optical Networks

“…For instance, the work found in [18] combines NC with p-cycles. Similar studies such as [11], [13] and [14], propose NCP schemes based on a DP strategy (these type of schemes are referred to as DPNC* in this paper). Other works evaluate the deployment of NCP schemes in MPLS networks [15].…”

“…In fact, the scheme proposed in this paper is inferred from the work done in [14]. We extend this work in order to meet two goals: 1) deploy a NCP scheme based on a DP strategy in an EON scenario (hereinafter referred to as E-DPNC*) to assess the performance regarding the OSP utilization, and; 2) extend E-DPNC* for multiple link failure scenarios.…”

“…A protection group is a set of traffic demands traversing a link, and a protection subgroup is a possible combination of traffic demands sent along a link for a given protection group. We create protection groups based on the traffic demands destination and bit-rate, because as described in [14], [11], it is more suitable to protect links with common terminal vertices. Hence, a protection group only contains traffic demands with the same destination, e.g., traffic sent along links e 1,2 , e 3,2 , e 4,2 .…”

“…In order to reduce the backup capacity utilization a network coding protection (NCP) scheme relies on coding (mixing) traffic. For more information related to NCP the reader is referred to [10][11][12][13][14][15].…”

Resilience mechanisms for carrier-grade networks

“…A coding path is a path that conveys coded (protected) traffic. In addition, note that T 2,5 encodes the already coded traffic (T 3,2 ), this is the concept of multiple-coding introduced in [45], which minimizes the P cost . Moreover, Table 2.3 summarizes the list of symbols used in this section.…”