Combined Resource Allocation System for Device-to-Device Communication towards LTE Networks

Fakhar Abbas, Ye Fang, Muhammad Irshad Zahoor, Kashif Sultan, M. Kavakli, M.J.E. Salami, A. Amini, M.A.B.M. Basri, A.B. Masli, S.C.H. Li, M. Pal
2016 MATEC Web of Conferences  
The LTE networks are being developed to grant mobile broadband services in the fourth generation (4G) systems and allow operators to use spectrum more efficiently.D2D communication is a promising technique to provide wireless services and enhance spectrum exploitation in the LTE Heterogeneous Networks (HetNets).D2D communication in HetNets allows users to communicate with each other directly by reusing the resources when communicating via the base stations. But during the downlink period, both
more » ... he D2D receiver and the Heterogeneous Users equipment's (HUE) experience interference caused by resource allocation. In this article, we identify and analyze the interference problem of HetNets caused by D2D transmitter during download. We propose a combined resource allocation and resource reuse method for LTE HetNets, where resource allocation to HUEs is employed on the basis of comparative fair algorithm and resource reuse to D2D users is employed on acquisitive empirical algorithm. This approach evaluates whether D2D mode is suitable or not by path loss evaluation, after that decreases the interference to HUE by selection of the minimum channel gain between HUE and D2D transmitter each time to mitigate interference. Our simulation results show that the efficiency and throughput of HetNets is improved by using the proposed method. Introduction As demands for high data rates increasing, the deficiency of radio resources impedes further growth of HetNets services. D2D communication tends to solve the problem by improving spectrum efficiency significantly. D2D communication enables mobile devices to communicate directly with each other, through reusing resources in HetNets [1] [2] . D2D communication scheme is incorporated which brings benefits in three ways. Firstly, D2D communication can increase the system throughput and the spectral efficiency by reusing the user resource. Secondly, the D2D communication decreases the transmission power of D2D transmitter. Thirdly, D2D communication has the advantage that licensed spectrum is allocated to local communication thus ensuring a secure and robust (against interference) environment [2]. D2D communication is also increasing necessity for local communication, such as games between mobile devices, video sharing, data flooding, local advertisement and information broadcast in hot point area like market. Machine to Machine communications in small distance in the Internet things also becomes a focus, as a local communication technology [2] . A major challenge in D2D communication is interference between different devices. Several attempts have been made to deal with the interference issues in D2D communication for LTE Networks. The D2D communication described in [3] can increase system throughput by reusing the resource of the cellular user. The interference cellular communication and D2D communication can be coordinated through proper power control and resource allocation. The D2D communication reduces the transmit power of terminal, which increases the working time of terminal and improves the energy efficiency. D2D communication can also decrease the load of base station (BS) via direct transportation. Besides, the D2D communication has the advantage that licensed spectrum is allocated to local communication. Licensed spectrum can guarantee a planned situation instead of an uncoordinated one. In [2], the method for D2D communication session association and organization involving procedures in the LTE System Architecture Evolution are proposed. The BS is capable of coordinating the interference between cellular communication and D2D communication by proper power control and resource allocation with the channel state information (CSI) of all involved links. In [4], a resource allocation method has been proposed to reduce the system interference. It, however, consisted of limited number of HUE and D2D pairs, and one D2D pair reused , Web of Conferences
doi:10.1051/matecconf/20165605001 fatcat:diksazmyozahfoq4si4x62l3be