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Tactical Data Links (TDLs) enable a military to exchange tactical information in a precise, efficient and timely manner. With the development of military information technologies, the data rate and the number of nodes participated in a network are experiencing explosive growth. Traditional TDLs medium access control (MAC) layer lacks sufficient flexibility, thus cannot meet the demand of real-time...
This paper introduces scenarios, use cases and requirements for discovery of device-device (D2D) proximity from 3GPP SA and RAN. D2D discovery procedure, D2D discovery signal and LTE-based design are discussed. Corresponding solution options and discovery link budget based on current 3GPP evaluation are also provided.
Individual mobility is a popular research topic in mobile communications. One interesting question is: is the movement of human-beings independent although they may not want to follow with each other? This paper explores the phenomenon of group movement by analyzing the traffic variance among cellular base stations. We find that the entropy of group movement is less than the sum of individual's and...
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