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Multimedia streaming applications have high throughput requirement and stringent Quality-of-Service (QoS) guarantee. In this paper, we aim at designing a novel transmission and retransmission scheme, which integrates both the Network Coding and the Superposition Coding for wireless video broadcast networks by packet-erasure channel. Specifically, the Scalable Video Coding (SVC) technology is introduced...
Network selection is a key technology to realize fair resource allocation and load balancing for converged multi-radio heterogeneous networks. In this paper, we propose a Multiple attribute decision making and Evolutionary Game Theory (MEGT) integrated network selection scheme. In MEGT, utility functions are designed appropriately to compute user QoS satisfaction of the candidate network. User preferences...
The IEEE 802.16e standard provides five different scheduling services to meet the QoS requirement of multimedia applications and this paper investigates one specific scheduling service, i.e. rtPS scheduling. In order to relieve the serious MAC overhead problem in WiMAX system, an efficient scheduling algorithm for the rtPS services has been proposed in this paper. Also the algorithm has been implemented...
IEEE 802.16e has specified sleep mode operations depending on different types of power saving class for the purpose of energy saving. To solve the inefficient problem of multiple power saving classes over the same MS, this paper proposes an enhanced method to minimize the energy consumption of the MS as a whole while keeping the QoS requirements satisfied. Performance improvement of the proposed method...
In IEEE 802.16e system, most of existing scheduling algorithms focus on the real time services, while few of them have particularly considered the best-effort (BE) service. Since the BE service class is defined for non-realtime traffic with the lowest priority among all 802.16e scheduling services, it corresponds to applications with no specific rate or delay requirement. However, considering the...
A cross-layer design of packet scheduling and resource allocation based on beamforming for multiuser MIMO-OFDM systems is presented in this paper. First, we design beamforming vectors in order to convert the MIMO channels into equivalent single-input single-output (SISO) channels and choose the main SISO channel to transmit packets. Then we use a multi-strategy scheduler to schedule packets of all...
High speed downlink packet access (HSDPA) was introduced in WCDMA as an enhance technology. The objective of the major component fast packet scheduling is to ensure the fairness between users according to their instantaneous channel state. We proposed in this paper a novel packet scheduling algorithm for HSDPA which is based on QoS assurances. This algorithm is called classified wireless fair queuing...
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