Sana Ullah

Sana Ullah
University of Engineering and Technology, Peshawar · Department of Electrical Engineering

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91
Publications
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3,477
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Publications

Publications (91)
Article
To prevent the critical damage to human tissue by the high temperature on an implanted or wearable node, various temperature-aware routing protocols have been proposed in wireless body area networks (WBAN). However, routing-based approaches cannot provide a flexible trade-off between temperature increase and quality-of-service (QoS) degradation bec...
Article
Full-text available
This paper addresses a support vector machine (SVM) model-based packet scheduling in wireless communication networks. The linear SVM, as well as the polynomial SVM model-based proportional fair scheduling (SVM-PFS), are suggested. Moreover, their performances are analyzed for various system and machine learning parameters such as the average window...
Article
Unmanned Aerial Vehicles (UAVs) have great potential to revolutionize the future of automotive, energy, and healthcare sectors by working as wireless relays to improve connectivity with ground networks. They are able to collect and process real-time information by connecting existing network infrastructures including Internet of Medical Things (e.g...
Article
Social networks play a key role in providing a new approach to collecting information regarding mobility and transportation services. To study this information, sentiment analysis can make decent observations to support intelligent transportation systems (ITSs) in examining traffic control and management systems. However, sentiment analysis faces t...
Article
Full-text available
In wireless body area networks, temperature-aware routing plays an important role in preventing damage of surrounding body tissues caused by the temperature rise of the nodes. However, existing temperature-aware routing protocols tend to choose the next hop according to the temperature metric without considering transmission delay and data loss cau...
Article
Recent advancement in internet of medical things (IoMT) has enabled deployment of miniaturized, intelligent, and low-power medical devices in, on, or around a human body for unobtrusive and remote health monitoring. The IEEE 802.15.6 standard facilitates such monitoring by enabling low-power and reliable wireless communication between the medical d...
Article
Caching popular multimedia content constitutes a promising solution to mitigate the congestion in the ultimate potential for 5G networks. Moreover, a three-tier heterogeneous network, where device-to-device (D2D) pairs, small cells (SCs) and macro base stations (BSs) are included, is suggested in 5G wireless networks. In addition, local caching of...
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The growing use of wireless health data transmission via Internet of Things is significantly beneficial to the healthcare industry for optimal usage of health-related facilities. However, at the same time, the use raises concern of privacy protection. Health-related data are private and should be suitably protected. Several pathologies, such as voc...
Article
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Wireless body area networks (WBANs) support the inter-operability of biomedical sensors and medical institutions with convenience and high-efficiency, which makes it an appropriate solution for the pervasive healthcare. Typically, WBANs comprise in-body or around-body sensor nodes for collecting data of physiological feature. Therefore, the efficie...
Article
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The Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) procedure of IEEE 802.15.6 Medium Access Control (MAC) protocols for the Wireless Body Area Network (WBAN) use an Alternative Binary Exponential Backoff (ABEB) procedure. The backoff algorithm plays an important role to avoid collision in wireless networks. The Binary Exponential...
Article
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Wireless sensor networks show great potential to successfully address the timeliness and energy-efficiency requirements of different cyber-physical system applications. Generally, these requirements span several layers of the stack and demand an on-line mechanism capable of efficiently tuning several parameters, in order to better support highly dy...
Article
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Developments of wireless body area networks (WBANs) facilitate the pervasive health monitoring with mHealth applications. WBANs can support continuous health monitoring for the human body in convenience and high efficiency without any intervention. The monitoring data in health care have the characteristics of various data flows and heterogeneous d...
Article
Sensing and alerting are fundamental to AAL. It is a long way from sensing to alerting, where lots of messages are interchanged among different processing units. Starting from the transfer of sensed data to the data processor and all the way to the alert generator, messages change in format, type, and size when intended for different stakeholders....
Conference Paper
Full-text available
Arrhythmia is caused by improper and irregular sinus rhythm or heartbeats. In order to diagnose cardiac arrhyth- mia, electrocardiogram (ECG) beat classification and analysis is very necessary. The efficiency and accuracy of any classification model highly depends on selecting the most relevant features. The aim of this study is to classify differe...
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The guest editors would like to thank all the authors for their high quality submissions and we are especially thankful to the reviewers for their timely and valuable comments.
Article
Maintaining a high level of data security with a low impact on system performance is more challenging in wireless multimedia applications. Protocols that are used for wireless local area network (WLAN) security are known to significantly degrade performance. In this paper, we propose an enhanced security system for a WLAN. Our new design aims to de...
Article
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IEEE 802.11 is one of the most well-established and widely used standard for wireless LAN. Its Medium Access control (MAC) layer assumes that the devices adhere to the standard’s rules and timers to assure fair access and sharing of the medium. However, wireless cards driver flexibility and configurability make it possible for selfish misbehaving n...
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Signal-to-interference ratio (SIR) performance of a multiband orthogonal frequency division multiplexing ultra-wideband system with residual timing offset is investigated. To do so, an exact mathematical derivation of the SIR of this system is derived. It becomes obvious that, unlike a cyclic prefixing based system, a zero padding based system is s...
Article
The IEEE 802.15.6 standard for wireless body area network (WBAN) defines two contention-based channel access schemes: slotted ALOHA and carrier sense multiple access with collision avoidance (CSMA/CA) using an alternative binary exponential backoff procedure. The standard supports quality of service (QoS) differentiation through user priorities and...
Article
Full-text available
The authors would like to thank all the reviewers who have rigorously reviewed the papers and helped them select the best papers for publication. They would also like to thank the editorial staff for their continuous support.
Article
Wireless body area networks (WBANs) are expected to play a significant role in smart healthcare systems. One of the most important attributes of WBANs is to increase network lifetime by introducing novel and low-power techniques on the energy-constrained sensor nodes. Medium access control (MAC) protocols play a significant role in determining the...
Article
Wireless Body Area Networks (WBANs) have emerged as a promising technology for medical and non-medical applications. WBANs consist of a number of miniaturized, portable, and autonomous sensor nodes that are used for long-term health monitoring of patients. These sensor nodes continuously collect vital signs of patients, which are used for ubiquitou...
Article
Full-text available
Wireless Body Area Network (WBAN) is the most convenient, cost-effective, accurate, and non-invasive technology for e-health monitoring. The performance of WBAN may be disturbed when coexisting with other wireless networks. Accordingly, this paper provides a comprehensive study and in-depth analysis of coexistence issues and interference mitigation...
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The physical indices of the soil are major contributor in growth and yield of the crops. Soil texture is a stable soil physical characteristic that has an indirect impact on the crop growth. Present study aims to evaluate the impact of different textures along with organic amendments on root extension of maize that ultimately affect maize growth. P...
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Timely segregation of critical/noncritical nodes is extremely crucial in mobile ad hoc and sensor networks. Most of the existing segregation schemes are centralized and require maintaining network wide information, which may not be feasible in large-scale dynamic networks. Moreover, these schemes lack rigorous validation and entirely rely on simula...
Article
In the last decade, both scientific community and automotive industry enabled communications among vehicles in different kinds of scenarios proposing different vehicular architectures. Vehicular delay-tolerant networks (VDTNs) were proposed as a solution to overcome some of the issues found in other vehicular architectures, namely, in dispersed reg...
Article
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This paper introduces a hybrid and secure MAC protocol (PMAC) for WBAN. The PMAC protocol uses two contention access periods (CAPs) for accommodating normal and life-critical traffic and one contention-free period (CFP) for accommodating large amount of data packets. The priority-guaranteed CSMA/CA procedure is used in the CAP period, where differe...
Conference Paper
Vehicular Delay-Tolerant Networks (VDTNs) were proposed as a solution to overcome some issues found in other vehicular technologies. VDTNs assume the bundle layer placement under the network layer. This vehicular architecture can be applied in sparse regions characterized by sparse connectivity, long propagation delays, high error rates, and short...
Article
A Wireless Body Area Network (WBAN) allows the seamless integration of small and intelligent invasive or non-invasive sensor nodes in, on or around a human body for continuous health monitoring. These nodes are expected to use different power-efficient protocols in order to extend the WBAN lifetime. This paper highlights the power consumption and s...
Article
Interference degrades the performance of a correct data signal detection and decoding. This problem becomes rigorous when interferences are present during the period of channel estimation. This will wipe out the accuracy of channel estimation and will eventually result in a severe degradation in the performance of signal detection and decoding in t...
Conference Paper
In recent years, provisioning of human-centric services through body area networks, robotics technology and cloud computing is continuously attracting extensive attention from both academia and industry. In this paper, we propose a novel robotics and cloud-assisted healthcare system (ROCHAS), which combines these three technologies to provide perva...
Article
Wireless body area network (WBAN) is an emerging short-range wireless communication network with sensor nodes located on, in or around the human body for healthcare, entertainment and ubiquitous computing. In WBANs, energy is severely constrained which is the prime consideration in the medium access control (MAC) protocol design. In this paper, we...
Conference Paper
Web services appeared as a promising technology for Web environments independent of technologies, services, and applications. Currently, there are some issues related with this approach that should be studied. For instance, if massive quantities of data are sent to databases it can influence significantly the performance of the whole system. The Ad...
Article
IEEE 802.15.3 is expected to play a significant role in the Internet of Things IoT. It is developed for high-rate communication between low-power devices in a Wireless Personal Area Network WPAN. The standard defines Medium Access Control MAC and physical layer protocols that support real-time communication over an area of ten square metres. IEEE 8...
Conference Paper
A Wireless Body Area Networks (WBAN) has emerged as a promising technology for pervasive healthcare systems. It allows the seamless integration of small and intelligent invasive or non-invasive sensor nodes in, on or around a human body for continuous health monitoring. This paper presents a secure RFID-based protocol for WBAN. This protocol introd...
Conference Paper
One of key attributes of WBAN is to extend the network lifetime, which can be achieved by adjusting the wakeup and sleep modes of the sensor nodes. Traditional low-power methods such as channel polling and periodic duty cycling are unable to satisfy WBANs requirements due to idle listening, collision, and control packet overhead problems. In this p...
Article
Full-text available
IEEE 802.15.6 is the first international Wireless Body Area Network (WBAN) standard that supports communications in the vicinity of or inside a human body to serve a variety of medical and nonmedical applications. The standard defines a Medium Access Control (MAC) layer that supports several Physical (PHY) layers. In this paper, the key features of...
Article
Radio Frequency IDentification (RFID) has allowed the realization of ubiquitous tracking and monitoring of physical objects wirelessly with minimum human interactions. It plays a key role in a wide range of applications including asset tracking, contactless payment, access control, transportation and logistics, and other industrial applications. On...
Article
The IEEE 802.15.6 is a new communication standard on Wireless Body Area Network (WBAN) that focuses on a variety of medical, Consumer Electronics (CE) and entertainment applications. In this paper, the throughput and delay performance of the IEEE 802.15.6 is presented. Numerical formulas are derived to determine the maximum throughput and minimum d...
Article
The IEEE 802.15.4 standard is designed to provide a low-power, low data rate protocol offering a high reliability. As an amendment to this standard, IEEE 802.15.4a introduces new options for physical layer to enable precision ranging. In this work, we analyzed the theoretical throughput and delay bounds of the unslotted version of chirp spread spec...
Conference Paper
Single Carrier Frequency Division Multiple Access (SC-FDMA) is a multiple access scheme that uses DFT spreading prior to OFDM modulation to map the signal from each user to a subset of the available subcarriers. That has similar performance and almost the same overall structure as those of an OFDMA system. Its advantage over OFDMA is that the SC-FD...
Article
Full-text available
A Wireless Body Area Network (WBAN) is a collection of low-power and lightweight wireless sensor nodes that are used to monitor the human body functions and the surrounding environment. It supports a number of innovative and interesting applications, including ubiquitous healthcare and Consumer Electronics (CE) applications. Since WBAN nodes are us...
Article
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Wireless body sensor network (WBSN) has gained significant interests as an important infrastructure for real-time biomedical healthcare systems, while the security of the sensitive health information becomes one of the main challenges. Due to the constraints ...
Article
A Wireless Body Area Network (WBAN) is expected to play a significant role in future healthcare system. It interconnects low-cost and intelligent sensor nodes in, on, or around a human body to serve a variety of medical applications. It can be used to diagnose and treat patients with chronic diseases such as hypertensions, diabetes, and cardiovascu...
Article
The IEEE 802.15.6 standard is a communication standard optimized for low-power and short-range in-body/on-body nodes to serve a variety of medical, consumer electronics and entertainment applications. Providing high mobility with guaranteed Quality of Service (QoS) to a WBAN user in heterogeneous wireless networks is a challenging task. A WBAN uses...
Conference Paper
Wireless Body Area Network (WBAN) is becoming increasingly important for ubiquitous healthcare, consumer electronics, and entertainment applications. WBAN provides unprecedented opportunities to monitor the health status of a patient with real-time updates to the physician. IEEE 802.15.6 is established to develop a wireless communication standard o...
Conference Paper
IEEE 802.15.3 is designed for high data rates multimedia applications in Wireless Personal Area Network (WPAN). The piconet is the basic topology of IEEE 802.15.3, which consists of a number of independent devices and a Piconet Coordinator (PNC). Medium Access Control (MAC) protocol plays a vital role in determining the energy consumption of all de...
Conference Paper
Applications of sensor networks in healthcare have undergone major changes in recent times. Implanted wireless sensor devices inside the human body to monitor the activities are a reality now. A new field called the Wireless Body Area Networks (WBAN or BAN) has emerged as a hot research area. To fulfill the needs for a common standard and solve the...
Conference Paper
Full-text available
Wireless Body Area Networks (WBAN) has emerged as a key technology to provide real-time health monitoring of a patient and to diagnose and treat many life threatening diseases. WBAN operates in close vicinity to, on, or inside a human body and supports a variety of medical and non-medical applications. IEEE 802 has established a Task Group called I...
Article
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The performance of the implant inside a human body with polarisation, distance, and different power settings at the base-station is presented. In addition, the unslotted CSMA/CA protocol is studied for a heterogeneous WBAN.
Article
A Traffic-adaptive MAC protocol (TaMAC) for a Wireless Body Area Network (WBAN) is presented in this paper. The idle listening and overhearing problems are solved by exploiting the traffic information of the nodes. The protocol is supported by a traffic-based wakeup mechanism and a wakeup radio mechanism that are used to accommodate normal, emergen...
Article
Full-text available
Body Area Network (BAN) is a collection of low-power, miniaturised, and intelligent sensor nodes that are used for unobtrusive and ambulatory health monitoring of a patient without any additional constraints. These nodes operate on different frequency bands or Multiple Physical Layers (Multi-PHYs). Additionally, some BAN applications demand a logic...
Conference Paper
Wireless Body Area Network (WBAN) allows the integration of low-power, miniaturized, intelligent, invasive or/and non-invasive wireless sensor nodes that are used to monitor the health status of a patient with real-time updates to a base-station/physician. Since multiple low-power sensor nodes are deployed in/on a human body, Medium Access Control...
Article
Owing to the extremely high-time resolution of impulse radio ultra-wideband (IR-UWB), time of arrival (TOA) estimation has been an important and tempting issue of this technology ever since its emergence. Conventional TOA estimation (TOAE) schemes require prohibitively high sampling rate and a priori knowledge of the received signal, and hence rend...
Article
This paper proposes an optimal cooperative spectrum sensing scheme, based on the criterion of deflection coefficient maximization of the global decision statistic. Multiple cooperative secondary users serve in the cognitive radio network to provide space diversity for spectrum sensing. After the fusion center acquires the optimal fusion weights, an...
Article
Full-text available
Recent advances in microelectronics and integrated circuits, system-on-chip design, wireless communication and intelligent low-power sensors have allowed the realization of a Wireless Body Area Network (WBAN). A WBAN is a collection of low-power, miniaturized, invasive/non-invasive lightweight wireless sensor nodes that monitor the human body funct...
Article
Wireless Body Area Network (WBAN) consists of low-power, miniaturized, and autonomous wireless sensor nodes that enable physicians to remotely monitor vital signs of patients and provide real-time feedback with medical diagnosis and consultations. It is the most reliable and cheaper way to take care of patients suffering from chronic diseases such...
Article
Recent advances in micro-electro-mechanical systems, wireless communication, low-power intelligent sensors, and semiconductor technologies have allowed the realization of a wireless body area network (WBAN). A WBAN provides unobtrusive health monitoring for a long period of time with real-time updates to the physician. It is widely used for ubiquit...
Conference Paper
In this paper, we present a Medium Access Control Protocol (MAC) for a Wireless Body Area Network (WBAN). Designing of MAC for WBAN has key challenges like power efficiency and flexibility in duty cycle on energy constraint sensor node. To solve it we exploit Time Division Multiple Access (TDMA) and Multi beam Antenna approach simultaneously. Toget...
Article
Body Area Network (BAN) consists of multiple in-body/on-body nodes working on different channels to serve a variety of applications. Some applications require logical connection between Multiple Physical Channels (Multi-PHYs), also called MAC transparency. In this paper, the idea of controlling Multi-PHYs using one MAC protocol is introduced. Unlik...
Article
Full-text available
The seamless integration of low-power, miniaturised, invasive/non-invasive lightweight sensor nodes have contributed to the development of a proactive and unobtrusive Wireless Body Area Network (WBAN). A WBAN provides long-term health monitoring of a patient without any constraint on his/her normal dailylife activities. This monitoring requires low...
Article
Full-text available
Recent advances in Micro-Electro-Mechanical Systems (MEMS) technology, integrated circuits, and wireless communication have allowed the realization of Wireless Body Area Networks (WBANs). WBANs promise unobtrusive ambulatory health monitoring for a long period of time and provide real-time updates of the patient's status to the physician. They are...
Article
Full-text available
The seamless integration of low-power, miniaturised, invasive/non-invasive lightweight sensor nodes have contributed to the development of a proactive and unobtrusive Wireless Body Area Network (WBAN). A WBAN provides long-term health monitoring of a patient without any constraint on his/her normal dailylife activities. This monitoring requires the...
Article
Wireless Body Area Networks (WBANs) provide unprecedented opportunities to monitor the patient's health status with real-time updates to the physician. Since WBAN devices are used to collect sensitive (life-critical) information and may operate in hostile environments, they require strict security mechanisms to prevent the malicious interaction wit...
Article
Full-text available
Low power UWB receiver architecture is proposed for a Wireless Body Area Network (WBAN). This receiving technology is a synergy of existing downconversion-based narrowband rejection mechanism in RF front end and signal processing in frequency domain. Frequency components of converted and filtered UWB pulses are separated into real and imaginary par...
Conference Paper
This paper presents a numerical analysis of a CSMA/CA mechanism for a pattern-based WBAN system. Several equations are derived to observe the number of back-off periods required by high, medium, and low traffic BAN Nodes (BNs). Numerical results show that CSMA/CA mechanism is not suitable for medium and low traffic BNs, and high traffic BNs encount...