Mustafa Almahdi Algaet

Provisioning Quality of Service of Wireless Telemedicine for E-Health Services: A Review

In general, on-line medical consultation reduces time required for medical consultation and induces improvement in the quality and efficiency of healthcare services. The scope of study includes several key features of present day e-health applications such as X-ray, ECG, video, diagnosis images and other common applications. Moreover, the provision of Quality of Service (QoS) in terms of specific medical care services in e-health, the priority set for e-health services and the support of QoS in wireless networks and techniques or methods aimed at IEEE 802.11 to secure the provision of QoS has been assessed as well. In e-health, medical services in remote places which include rustic healthcare centres, ships, ambulances and home healthcare services can be supported through the applications of e-health services such as medical databases, electronic health data and the transferring of text, video, sound and images. Given this, a proposal has been made for a multiple service wireless networking with multiple sets of priorities. In relation to the terms of an acceptable QoS level by the customers of e-health services, prioritization is an important criterion in a multi-traffic network. The requirement for QoS in medical networking of wireless broadband has paved the way for bandwidth prerequisites and the live transmission or real-time medical applications. The proposed wireless network is capable of handling medical applications for both normal and life-threatening conditions as characterized by the level of emergencies. In addition, the allocation of bandwidth and the system that controls admittance designed based on IEEE 802.16 especially for e-health services or wireless telemedicine will be discussed in this study. It has been concluded that under busy traffic conditions, the proposed architecture can used as a feasible and reliable infrastructure network for telemedicine.

Provisioning quality of service of wireless telemedicine for e-health services

Telemedicine is not yet all worked out where it can be utilized constantly or flexibly. But, it has enormous potential to be a tremendous asset to the world and all its civilizations. Telemedicine has had a positive impact on some aspects of patient care. There is no arguing that the contributions it can make have endless possibilities however more time and effort will be needed to organize telemedicine for it to be confidently accepted. Asynchronous telemedicine does not require the simultaneous availability of the source and recipient of patient information. Telemedicine can be roughly characterized as either synchronous or asynchronous. Synchronous telemedicine involves caregivers acquiring and acting upon information about a remote patient in near real-time.

Design a novel reverse direction transmission using piggyback and piggyback with block ACK to improving the performance of MAC layer based on very high speed wireless lans

A reverse direction transmission and block acknowledgement are the main features to improve the performance of MAC layer based on next generation wireless LANs. When the data send it in reverse direction from side A to B, side B does not need to send separate ACK, it may wait for a period of time is less than the senders time of period to avoid the retransmission at sender and send a piggyback frame (ACK+data) this called piggybacking. Piggyback with block ACK represented in multi data send from side A to B with block ACK request (BAR), side B send block ACK (BA) piggybacking with multi data to side A, this called piggybacking with block ACK. In our scheme here we want to propose a novel reverse direction transmission using piggyback and piggyback with block ACK which is divided each data frame send and receive into subframes and send each subframe separately, if there is an error happened during the transmission only retransmission the corrupted subframe instead of whole frame. We want to implement this work in NS2 simulator. The research contributions are summarized and the piggyback schemes that need to be investigated via high speed wireless LANs are also highlighted.

TRANSMISSION CONTROL PROTOCOL PERFORMANCE COMPARISON USING PIGGYBACK SCHEME IN WLANS

The main problem at wireless networks is the overhe ad at MAC layer; when the data physical rate is increasing it causes increasing the overhead and de creasing at the MAC efficiency. In this study we st udy the performance comparison of TCP protocol in WLANs with and without using piggyback. The study of results concerning of implemented both mechanisms in NS2 simulator and find out the good performance from this comparison. Based on the results from our experiments show that the Piggyback scheme is one of the efficient ways to reduce the overhead at MAC wi reless networks.

Towards nonuniform illumination face enhancement via adaptive contrast stretching

A face enhancement has the potential to play an important part in providing satisfactory and vast information to the face recognition performance. Therefore, a new approach for nonuniform illumination face enhancements (NIFE) was proposed by designing an adaptive contrast-stretching (ACS) filter. In a more objective manner of achieving this, an investigation usage of CS function with adjustable factors value to summarise its influence on the NIFE is examined firstly. Secondly, describe a new strategy to cater for CS adaptive factors prediction using training and testing phases. A dispersion versus location (DL) descriptor was examined in the training phase to generate the faces feature vectors. Subsequently, a frame differencing module (FDM) was developed for faces label generations. In the testing phase, the approach was examined to recognise the DL descriptor and predict face label based vocabulary tree model (VTM). Thirdly, the VTM performance was examined by referring to the area under curve (AUC) score from the receiver operating characteristic (ROC). The face quality measurement was evaluated via blind reference based statistical measures (BR-SM), blind reference based DL-descriptors (BR-DL) and visual interpretation of the resulting images. The BR-SM performed through calculating the EME (Measure of Enhancement), EEME (Measure of Enhancement by Entropy), SDME (Second Derivative like Measure of Enhancement), SHP (Coefficient of Sharpness) and CPP (Contrast per Pixel). In addition, by using DL scatter, the BR-DL handles the specific relationship with regards to the local contrast to local brightness within the resulting face images. Four face image databases, namely Extended Yale B, Mobio, Feret and CMU-PIE were used. The final results attained prove that compared to the state-of-the-art methods, the proposed ACS filter implementation is the most excellent choice in terms of contrast and nonuniform illumination adjustment as well as providing images of satisfactory quality. In short, the benefits attained proves that ACS is driven with a profitable enhancement rate in providing tremendous detail concerning face recognition systems.

Development of Robust Medical Image Transmission via Wi-Fi IEEE 802.11b in the Hospital Area

Recently, many clinical trials have used telemedicine as their major tool. This technology is used as it able quick diagnosis with visuals and quantitative assessment that helps both health practitioners and professionals. The vastness of the medical and healthcare sector and their importance in ensuring the quality of life for all citizens has made the need for a medical diagnosis with image vital. Hence, software like medical data simulation (Medata-SIM) that is used to assess medical image is developed further. The description of Medata-SIM software tool which consists of main step known as compress segment part will be processed by lossy and lossless technique with accepted compression methods, while transmission/receiver segment will be processed using Wi-Fi 802.11b with low-cost, Low-bandwidth transmission. Finally, the outcome segment will be for decompression and results are featured in this paper.

Design a New Bidirectional Transmission Protocol to Improve the Performance of MAC Layer Based on Very High Speed WLANs

This paper presents a new bidirectional transmission protocol with single data frame to computing the performance of MAC layer based on IEEE 802.11n. As high as 600 Mbps of physical data rate is achieved in IEEE 802.11n where high data rate the current MAC layer leads to high performance overhead and low performance of throughput and designing the MAC layer still ongoing to achieve high performance throughput. In this study, a new bidirectional transmission protocol with single data frame has been proposed called BTDF bidirectional transmission data fragmentation, which is divided each data frame from sender to receiver and reverse into subframes and send each subframe, Packets those exceed the size threshold are divided into fragments also where the corrupted subframe will be retransmitted during the disruption of transmission. We have implemented this scheme in NS2 simulator to show the results for TCP and HDTV traffics and compared with literature.