Exploiting Backbone Routing Redundancy in Industrial Wireless Systems

Industrial wireless applications must interoperate with backbone infrastructure for operation and monitoring by control systems. Most of these systems are designed with multiple backbone routers (BbRs) to enhance reliability. Multiple BbRs have a significant impact on wireless systems as the redundancy of multiple BbRs offers a number of benefits, such as spatial diversity and load balancing. Here, we investigate the advantages of spatial diversity provided by multiple BbRs. BbR-related communication patterns and mesh routing mechanisms optimizing the effects of spatial diversity are shown, and we also clarify the quantitative effectiveness of the redundancy of multiple BbRs with experimental proofs.