Improve Downlink Burst Allocation to Achieve High Frame Utilization of Mobile WiMAX (802.16e)
نویسندگان
چکیده
The burst allocation algorithm is responsible about calculating the appropriate dimensions and location of each user’s data to construct the bursts in the downlink subframe in term of the number of slots for each user. Burst allocation is one of the performance parameter which influences the mobile WiMAX systems, due to resource wastage in the form of unused and unallocated slots per frame which affects the Base station performance. In this paper, a Sequential Burst Allocation (SBA) algorithm is proposed to overcome frame wastage. The SBA algorithm is based on the idea of sequential allocation of user slots. SBA limits the excessive unused slots, and burst fragmentation when necessary is forced to be used to eliminate unallocated slots between data bursts. Continuous allocation from one frame to the next has a significant impact on reducing resource wastage. It has been observed from the results that the percentage difference of the frame utilization between SBA and ST algorithms is 32.84 %, which achieve significant reduction of resource wastage per frame, leading to more exploit of the
منابع مشابه
Hocsa: an Efficient Downlink Burst Allocation Algorithm to Achieve High Frame Utilization
A Broadband Wireless Access technology known as Worldwide Interoperability for Microwave Access (WiMAX) is based on IEEE 802.16 standards. It uses orthogonal frequency division multiple accesses (OFDMA) as one of its multiple access technique. Major design factors of OFDMA resource allocation are scheduling and burst allocation. To calculate the appropriate dimensions and location of each user’...
متن کاملAnalysis of Packet Loss and Latency Control for Robust IPTV over Mobile WiMAX and LTE Assessment (RESEARCH NOTE)
Abstract The streamed audio video (AV) content for IPTV across mobile WiMAX channel, the different schemes were discussed to reduce the noise, packet loss and latency. The objective of this paper is to verify the effectiveness of forward error correction (FEC) techniques and to suggest the techniques for robustness problems and to analysis the issues either due to AV coding encoding or due to...
متن کاملSecure and reliable transmission mechanism for orthogonal frequency-division multiple access worldwide interoperability for microwave access systems
The most challenging technical issue in worldwide interoperability for microwave access (WiMAX) networks is to find a way to counteract the interference as well as to solve the fading problem in transmissions. Although IEEE 802.16e standard proposes several mechanisms to handle this difficult problem, there are still many external interferences that may collapse ongoing transmissions. To tackle...
متن کاملDeficit Round Robin with Fragmentation Scheduling to Achieve Generalized Weighted Fairness for Resource Allocation in IEEE 802.16e Mobile WiMAX Networks
Deficit Round Robin (DRR) is a fair packet-based scheduling discipline commonly used in wired networks where link capacities do not change with time. However, in wireless networks, especially wireless broadband networks, i.e., IEEE 802.16e Mobile WiMAX, there are two main considerations violate the packet-based service concept for DRR. First, the resources are allocated per Mobile WiMAX frame. ...
متن کاملImprove WiMAX Network Performance Using Cross-Layer Framework
WiMAX OFDMA downlink subframes have a special 2-D channel time structure. The resource allocations from this structure incur extra control overheads that hurt network performance. Existing solutions try to improve network performance by designing either the scheduler in the MAC layer or the burst allocator in the physical layer, but the efficiency of overhead reduction is limited. In this paper...
متن کامل