Several measurement studies on spectrum utilization have identified vacant or sporadically used spectrum in the licensed bands, such as those reserved for TV broadcast. Cognitive radio (CR) networks aim to alleviate the problem of spectrum scarcity by intelligently allowing the unlicensed devices to opportunistically transmit in the available licensed spectrum, while ensuring that the performance of the licensed or primary users is not affected. CR networks, however, impose unique challenges due to the high fluctuation in the available spectrum as well as diverse quality-of-service (QoS) requirements. Specifically in cognitive radio ad hoc networks (CRAHNs), the distributed multi-hop architecture, the dynamic network topology, and the time and location varying spectrum availability are some of the key distinguishing factors. As an example, the operation of any higher layer protocol requires reliable exchange of control packets, which in turn needs a stable control channel common for a group of nodes in the rapidly changing spectrum environment. Moreover, to maintain accuracy in spectrum sensing, adjacent CR nodes may need to be silenced, necessitating advanced link layer design and analytical models to study the effect of these intermittent communication disruptions on the network throughput. Thus, the solutions to some of the above challenges present in CRAHNs are non-trivial, and are likely to involve novel design techniques that simultaneously address a wide range of communication problems spanning several layers of the protocol stack.
This workshop will focus on key research challenges related to CRAHNs, and it is intended to be a forum for collaboration across multiple communities from the academia, industry and the government. Original papers are invited on protocol/algorithm design, experimental results, analytical modeling in the area of CRAHNs covering but not limited to following topics:
- Distributed spectrum sensing
- Spectrum sharing, and co-existence with primary users in the licensed bands
- Novel CRAHN architectures, including cognitive sensor, vehicular, mobile ad hoc networks
- Common control channel design
- Future applications of CRAHNs in healthcare, surveillance, monitoring, structural testing, etc.
- Analytical results on network capacity and performance, especially for end-to-end operation
- Cooperation in spectrum sensing, sharing, with associated benefits and network costs
- Performance evaluation of PHY, MAC, Network and Application protocols for CRAHNs
- Economic models of joint energy and spectrum-aware operation
- Studies on TCP and rate-based transport layer schemes for CRAHNs
- Multihop cognitive radio test-beds and prototypes
- Standardization efforts for personal/portable devices using licensed frequencies
- Multimedia delivery using CRAHNs
All accepted papers will be included in the conference proceedings and published by Springer in the ICST Lecture Notes (LNICST) series. Please follow the instructions in the Authors' Kit to prepare manuscripts. Papers should be submitted via the ASSYST system. Details for submission can be found at Paper Submission.
Kaushik R. Chowdhury (Northeastern University, USA)
email: krc at ece dot neu dot edu
Marco Di Felice (University of Bologna, Italy)
email: difelice at cs dot unibo dot it