2014/06/23 by Georgios Papadimitriou, Papadimitriou, Georgios, Νικόλαος Παππάς +5
Computer Science · Engineering · #Cooperative Communication and Network Coding #FOS: Computer and information sciences #Mobile Ad Hoc Networks #Networking and Internet Architecture (cs.NI) #Wireless Communication Security Techniques
paper · pdf · doi:10.48550/arxiv.1406.5949
openalex publication_date 2014/06/23 · openalex created_date 2022/10/01 · openalex updated_date 2026/07/28
In wireless networks relay nodes can be used to assist the users'\ntransmissions to reach their destination. Work on relay cooperation, from a\nphysical layer perspective, has up to now yielded well-known results. This\npaper takes a different stance focusing on network-level cooperation. Extending\nprevious results for a single relay, we investigate here the benefits from the\ndeployment of a second one. We assume that the two relays do not generate\npackets of their own and the system employs random access to the medium; we\nfurther consider slotted time and that the users have saturated queues. We\nobtain analytical expressions for the arrival and service rates of the queues\nof the two relays and the stability conditions. We investigate a model of the\nsystem, in which the users are divided into clusters, each being served by one\nrelay, and show its advantages in terms of aggregate and throughput per user.\nWe quantify the above, analytically for the case of the collision channel and\nthrough simulations for the case of Multi-Packet Reception (MPR), and we\nprovide insight on when the deployment of a second relay in the system can\nyield significant advantages.\n