Fractional Frequency Reuse for Hierarchical Resource Allocation in Mobile WiMAX Networks

Fractional Frequency Reuse for Hierarchical Resource Allocation in Mobile WiMAX Networks

We propose a frequency planning based on zone switching diversity scheme for multicell OFDMA mobile WiMAX networks. In our approach, we focus on the use of Fractional Frequency Reuse (FFR) for guaranteeing the quality of service for the different service flows in the system. We investigate an architecture that coordinates the allocation of resources in terms of slots (the basic allocation unit ...

Downlink Resource Allocation and Frequency Reuse Schemes for WiMAX Networks

Exploiting Spatial Reuse in Resource Allocation for WiMAX Mesh Networks

Due to the scarceness of communication resource, therefore, resource allocation in wireless networks is an important issue. In this paper, we introduce a time slot allocation problem for multi-user wireless networks to achieve fairness at the node level and high network throughput in WiMAX mesh networks. We first propose a multi-objective programming formulation to model the subscriber stations...

A Zone Assignment Algorithm for Fractional Frequency Reuse in Mobile WiMAX Networks

Fractional Frequency Reuse (FFR) is a key concept for increasing the spectral efficiency of OFDMA-based broadband wireless access systems such as Mobile WiMAX. One of the main challenges when using FFR is to decide which mobile stations are assigned to which FFR time zone within a WiMAX MAC frame, so that the frame resource utilization efficiency is maximized while meeting the QoS demands of al...

Resource Allocation with Partitioning Criterion for Macro-Femto Overlay Cellular Networks with Fractional Frequency Reuse

The interference mitigation technique based on fractional frequency reuse (FFR) provides improved cell-edge performance with similar overall cell capacity as that of systems with the frequency reuse factor of one. Furthermore, frequency sub-band allocation by FFR has the benefit of allowing flexibility for the deployment of femto-cells through frequency partitioning. Determination of a proper f...