Storage Retrieval

Download Cognitive Wireless Networks by Zhiyong Feng, Qixun Zhang, Ping Zhang PDF

By Zhiyong Feng, Qixun Zhang, Ping Zhang

This short examines the present examine in cognitive instant networks (CWNs). besides a assessment of demanding situations in CWNs, this short provides novel theoretical reviews and structure versions for CWNs, advances within the cognitive details knowledge and supply, and clever source administration applied sciences. The short provides the motivations and ideas of CWNs, together with theoretical reports of temporal and geographic distribution entropy in addition to cognitive details metrics. a brand new structure version of CWNs is proposed with theoretical, practical and deployment architectures helping cognitive info circulate and source circulation. Key applied sciences are pointed out to accomplish the effective cognitive details expertise and supply. The short concludes by means of validating the effectiveness of proposed theories and applied sciences utilizing the CWNs testbed and discussing the significance of standardization practices. The context and research supplied by means of this article are perfect for researchers and practitioners attracted to instant networks and cognitive info. Cognitive instant Networks is usually useful for advanced-level scholars learning source administration and networking.

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Additional resources for Cognitive Wireless Networks

Example text

Guide terminal to establish connecƟon , inter-network switching AllocaƟon user resources Transmission data services . . Sub network AllocaƟon user resources Transmission data services Fig. 13 The Cognitive Plane with Sub Networks Then the Cognitive Plane selects the appropriate network as the serving cell to maximize the network capacity. Finally, the Cognitive Plane sends the information of the terminal to the serving cell, which will be responsible for the data transmission. Compared with the existing technical solutions, this architecture reflects a new way for future network deployment: pursuing network capacity and high data rate at hot spots instead of network coverage.

It is capable of determining the available channels at a specific geographic location based on the interference protection requirements. It can also provide lists of available channels to white space devices (WSDs) that have been certified under the regulatory bodies’ equipment authorization procedures. 1 Geo-Location Database of FCC The main idea proposed by FCC is to define a protection radius for the co-channel and the first adjacent channels plus no-talk area, where WSDs are not allowed to transmit.

Specifically, from the aspect of time domain, cognition information is time-varying and continuous, while from the aspect of network, cognition information is successively transmitted through CWN, which may span a number of heterogeneous networks. Thus, cognition flow is capable of describing the always-changing yet interdependent characteristics of cognition information over time and network domains [12]. 4, to improve the spectrum efficiency and the convergence of heterogeneous networks. The function of each module is described as follows.

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