Graph Coloring and Ant Colony Optimization based Sub-channel Allocation Algorithms for LTE-A HetNets c ©Richa Siddavaatam, 2012 Master of Applied Science Electrical and Computer Engineering Ryerson University LTE-Advanced is a promising technology which supports much higher peak rates, higher throughput and coverage, and lower latencies, resulting in a better user experience. For extended indoo...

Channel allocation or assignment problems have been studied intensively in the literature for the last 25 years. Current directions of this work appear to be in the area of self-organizing or distributed allocation methods, and the type of cellular arrays involved are moving toward complex mixed or hierarchical structures rather than simple arrays of macrocells or microcells. Channel segregatio...

Recent advances in cellular communication systems resulted in a huge increase in spectrum demand. To meet the requirements of the ever-growing need for spectrum, efficient utilization of the existing resources is of utmost importance. Channel Allocation, has thus become an inevitable research topic in wireless communications. In this paper, we propose an optimal channel allocation scheme, Optim...

The enormous growth of mobile telephone traffic, along with the limited number of channels available, requires efficient reuse of channels. Channel allocation schemes can be divided into three categories: Fixed Channel Allocation (FCA), Dynamic Channel Allocation (DCA) and Hybrid Channel Allocation (HCA). In HCA, channels are divided into two disjoint sets: one set of channels is assigned to ea...

In this work, we investigate the performance of distributed admission control with QoS provisioning and dynamical channel allocation for mobile/wireless networks. We first provide a QoS metric feasible for admission control with dynamically allocated channels. We then derive analytically a criterion using the QoS measure for distributed call admission control with dynamic channel allocation. Si...

Compared to wired networks, the communication bandwidth in the wireless networks is limited. In trying to achieve QoS guaranteed wireless services, efficient utilisation of bandwidth resources becomes a fundamental issue. A number of channel allocation schemes have been proposed to fully utilise the wireless bandwidth, but many of them just proposed the channel allocation scheme without present...

In this work, we investigate the performance of distributed admission control with QoS provisioning and dynamical channel allocation for mobile/wireless networks. We first provide a QoS metric feasible for admission control with dynamically allocated channels. We then derive a criterion analytically using the QoS measure for distributed call admission cent rol with dynamic channel allocation. W...

In order to avoid transmission's collisions and improve network performances in wireless mesh networks (WMNs), a reliable and efficient medium access control (MAC) protocol and a good channel allocation are needed. Allowing multiple channels use in the same network is often presented as a possible way to improve the network capacity. As IEEE 802.11, IEEE 802.15 and IEEE 802.16 standards provide...

In this paper, a fast and efficient busy-list sub-mesh allocation strategy, referred to as Turning Busy List (TBL), is suggested for 3D mesh connected multicomputers. Turning means that the orientation of the allocation request is changed when no sub-mesh is available in the requested orientation. The TBL strategy considers only those available free sub-meshes that border from the left on some ...

Methods for interference mitigation and adaptive multi-user resource allocation are among the most promising technological breakthroughs that should improve capacity of the last generation broadband wireless systems. In multi-cell scenarios characterized by radio technologies based on OFDMA (Orthogonal Frequency DivisionMultiple Access), co-channel interference is the performance limiting facto...