CoMP is considered for LTE-Advanced as a way to improve the coverage area of ​​high data rate communications, cell edge throughput for MTs and as a way to Increase system productivity under variable load conditions. CoMP is used to coordinate transmissions with multiple cells and to reduce interference from neighboring cells and thus reduce the power required to maintain a certain QoS. Say no to plagiarism. Get a tailor-made essay on "Why Violent Video Games Shouldn't Be Banned"? Get Original Essay In the paper, the authors analyzed the power-saving performance by turning off some BSs with medium interrupt constraint in three typical cooperation schemes: single BS transmission, BS cooperation, and wireless transmission. They also studied the effect of system parameters (traffic intensity and network density) on energy efficiency performance. In Ismail and Zhuang, both large-scale and small-scale traffic fluctuation network cooperation was modeled and analyzed. In case of large-scale fluctuations, networks with overlapping coverage could alternatively activate or deactivate their BSs based on long-term fluctuations in traffic load. On a small scale, each active BS can switch its wireless channels on and off based on short-term traffic load fluctuations. WMNs are also developing rapidly and are expected to address the limitations of ad hoc networks, WLAN, WPAN and WMAN, as well as crucially improve their performance. WMNs are capable of providing a wide variety of wireless applications in everyday life in public and private settings. Despite all the recent developments, much work remains to be done in the various layers of the WMN protocol. Thanks to the possibility of implementing WMN on existing wireless technologies, some companies have already launched their rather pioneering WMN products for sale. Practical experience, however, teaches that WMNs can and should be improved in several areas: Scalability Overall network performance indicators (throughput, end-to-end delay and fairness) do not scale with the amount of network nodes or hops . The problem can be alleviated somewhat by increasing capacity at network nodes, for example by using more radios or channels in a node, or by using radios with higher communication speeds. However, these improvements will not completely solve the problems: relative performance compared to the increased network capacity is not affected. However, new MAC, routing and transmission protocols will. Self-organization and self-configuration This implies that all WMN protocols were fully distributive and collaborative, but this is not currently true. Security Current security procedures leave WMNs partially unprotected from security attacks at different protocol layers. Network Integration WMNs are currently quite limited in their ability to integrate heterogeneous wireless networks, due to the challenges of incorporating multiple wireless interfaces and corresponding gateway/bridge functions in the same WMN router. Software radios could be the answer to this problem. Please note: this is just an example. Get a custom paper from our expert writers now. Get a Custom Essay WMNs still lag behind wired networks in terms of throughput and delays. The most obvious reason for the poor performance of WMNs (e.g., poor throughput, high network latency) is mainly due to insufficiently planned wireless networks. Research work has been done to diagnose bottlenecks and problems.