This Springer Brief focuses on the coexistence concerns emerging in LTE networks using unlicensed frequency bands. It provides a comprehensive review on LTE networks and their unavoidable need for enhanced capacity to meet the demands for future applications, including a need for low-cost options.
LTE using unlicensed frequency (U-LTE) is then introduced as the most promising solution, and discussed from various perspectives to unveil its benefits, challenges, and requirements for coexistence with the widely-deployed IEEE 802.11/Wi-Fi technology. Meeting these coexistence requirements is the most important factor for the acceptance of U-LTE, and the majority of this brief explores the big picture concerns and existing solutions related to coexistence-aware medium access protocols for background knowledge. A proposed network-aware adaptive listen-before-talk protocol is presented and evaluated.
Finally, the authors identify a numberof open technical questions and potential research issues in U-LTE. This Springer Brief is suitable for telecom engineers, researchers, and academic professionals with valuable knowledge and potential working or research directions when designing and developing medium access protocols for next generation wireless access networks.
Cuprins
Introduction.- Requirements and Regulations in the 5GHz Unlicensed Spectrum.- LTE-Advanced: An Overview.- IEEE 802.11/Wi-Fi Medium Access Control: An Overview.- U-LTE and Wi-Fi Coexistence: A Survey.- Network-aware Adaptive LBT (NALT) Coexistence Mechanism.- Open Questions and Potential Research Directions.
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