طبقه بندی مبتنی بر متریک پروتکل های مسیریابی برای شبکه های ad hoc رادیو شناختی
|کد مقاله||سال انتشار||مقاله انگلیسی||ترجمه فارسی||تعداد کلمات|
|70715||2014||13 صفحه PDF||سفارش دهید||11712 کلمه|
Publisher : Elsevier - Science Direct (الزویر - ساینس دایرکت)
Journal : Journal of Network and Computer Applications, Volume 40, April 2014, Pages 151–163
Cognitive radio (CR) technology is introduced to solve the problem of spectrum under-utilization in wireless networks by opportunistically exploiting portions of the spectrum temporarily vacated by licensed primary users. Devices with cognitive capabilities can be networked to create cognitive radio ad hoc networks (CRAHNs) that face many challenges in different layers due to the flexibility in the spectrum access process. In this paper, we present a survey of recent routing solutions in CRAHNs. We start by listing routing challenges associated with the CRAHNs. We then present different routing protocols that are designed for CRAHNs, they can be classified according to the routing metric into six main categories: delay based, link stability based, throughput based, location based, energy-aware, and combined or multi-metric protocols that either combine many metrics together or use different metrics according to some specific rules. Finally, possible future research directions are discussed.