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Device-to-Device (D2D) communication is the technology enabling user equipment (UE) to directly communicate with each other without help of evolved nodeB (eNB) which caters to the demand for high spectrum efficiency. This work focuses on the hybrid network which contains multiple Cellular UEs and D2D UEs. D2D communication shares up-link resource with cellular system and improves the performance of...
Device-to-Device (D2D) communication is an important complement for the future cellular network, which caters to the requirements of mobile internet applications. This article has studied the D2D communication underlaying the cellular networks, which allows the D2D user sharing uplink resource of cellular system. In order to limit mutual interference between cellular links and local D2D links, a semi-autonomous...
This paper discusses about the optimal mode allocation for the heterogeneous networks, in which the network can schedule users working in the device-to-device (D2D) mode or cellular mode. The D2D user is allowed to reuse the uplink resource of cellular system and the problem is formed as a sum-capacity optimization issue with outage constraints for both cellular and D2D links. The method for the optimal...
Device-to-Device communication enables high-speed services in the traditional cellular networks but brings potentially mutual interference. In this paper, the heterogeneous network of D2D and IMT-Advanced in a single cell is considered, where the D2D communication is assumed to share the uplink resource with cellular user. The definition of mode selection is first introduced and then a novel distance-dependent...
In this paper, we propose admission control and power optimization algorithms for Device-to-Device (D2D) communication which share uplink resources with cellular system in underlay mode. In the presence of quality of service (QoS) protection (both for D2D and cellular users) and transmit power limit, we propose a set-based admission control (SAC) algorithm in which some novel strategies of sets adjustment...
This paper analyzes the underlay and overlay mode selection of Device-to-Device (D2D) communication in the LTE-Advanced single-cell scenario. The two cases that the cell contains relay node or not are considered, and the study focuses on the location relationship between cellular UE and D2D UE. Our evaluation shows that whether D2D communication can reuse the cellular uplink resource or not is affected...
A hybrid system of cellular mode and device-to-device (D2D) mode is considered in this paper, where the cellular uplink resource is reused by the D2D transmission. In order to maximize the overall system performance, the mutual interference between cellular and D2D sub-systems has to be addressed. Here, two mechanisms are proposed to solve the problem: One is mitigating the interference from cellular...
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