Dynamic GTS Allocation Scheme in IEEE 802.15.4 by Multi-Factor

Ho, Ching-Li; Lin, Ching-Fuh; Hwang, Weng-Sing; Chung, Shen-Ming

doi:10.1109/iih-msp.2012.117

Cited by 12 publications

(8 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Here C is the data rate through which node communicates. If K i is the number of CFP slots required to send D i data, then it is computed as: (17) here, N bps is the number of maximum bits, that can transmitted during each CFP slot and is calculated as:…”

Section: Link Utilizationmentioning

confidence: 99%

“…CFP performance of the standard is also analyzed and some new scenarios are proposed to improve the performance of the standard in different prospects. Multi-Factor Dynamic GTS Allocation Scheme (MFDGAS) in [17] proposed CFP slots allocation to nodes by considering their data traffic, communication delay and slot size requirement. This improves the GTS utilization of CFP at the cost of fairness.…”

mentioning

confidence: 99%

See 1 more Smart Citation

An Efficient Superframe Structure with Optimal Bandwidth Utilization and Reduced Delay for Internet of Things Based Wireless Sensor Networks

Khan

Alvi

Javed

et al. 2020

Sensors

View full text Add to dashboard Cite

Internet of Things (IoT) is a promising technology that uses wireless sensor networks to enable data collection, monitoring, and transmission from the physical devices to the Internet. Due to its potential large scale usage, efficient routing and Medium Access Control (MAC) techniques are vital to meet various application requirements. Most of the IoT applications need low data rate and low powered wireless transmissions and IEEE 802.15.4 standard is mostly used in this regard which offers superframe structure at the MAC layer. However, for IoT applications where nodes have adaptive data traffic, the standard has some limitations such as bandwidth wastage and latency. In this paper, a new superframe structure is proposed that is backward compatible with the existing parameters of the standard. The proposed superframe overcomes limitations of the standard by fine-tuning its superframe structure and squeezing the size of its contention-free slots. Thus, the proposed superframe adjusts its duty cycle according to the traffic requirements and accommodates more nodes in a superframe structure. The analytical results show that our proposed superframe structure has almost 50% less delay, accommodate more nodes and has better link utilization in a superframe as compared to the IEEE 802.15.4 standard.

show abstract

Section: Link Utilizationmentioning

confidence: 99%

mentioning

confidence: 99%

An Efficient Superframe Structure with Optimal Bandwidth Utilization and Reduced Delay for Internet of Things Based Wireless Sensor Networks

Khan

Alvi

Javed

et al. 2020

Sensors

View full text Add to dashboard Cite

show abstract

“…Nam-Tuan et al [32] proposed an unbalance GTS allocation scheme to allocate GTS to nodes with different slot durations in wireless personal area network in order to solve bandwidth underutilization problem. Ho et al [33] proposed a multi-factor dynamic GTS allocation scheme which considers the size of data, delay and GTS utilization to allocate GTS to nodes to improve the performance of network by reducing delay and increasing throughput in the network. Zhisheng et al [34] proposed a QoS driven scheduling approach which uses Markov model to adjust the transmission order of nodes by using a threshold based scheme and addresses the packet delivery probability and energy efficiency.…”

Section: Related Work and Backgroundmentioning

confidence: 99%

Reliable and Energy Efficient MAC Mechanism for Patient Monitoring in Hospitals

Fatima¹,

Baig²,

Uddin³

2018

ijacsa

View full text Add to dashboard Cite

In medical body area network (MBAN) sensors are attached to a patient's body for continuous and real-time monitoring of biomedical vital signs. Sensors send patient's data to hospital base station so that doctors/caregivers can access it and be timely informed if patient's condition goes critical. These tiny sensors have low data rates, small transmission ranges, limited battery power and processing capabilities. Ensuring reliability in MBAN is important due to the critical nature of patient's data because any wrong/missing/delayed data can create a situation in which doctors may take wrong decisions about patient's health which can have fatal results. Data transmission reliability in MBAN can be ensured by retransmissions, acknowledgments or guaranteed time slot mechanism but it causes more power consumption. We propose an efficient MAC mechanism to achieve both reliability and energy efficiency at an acceptable tradeoff level. The proposed MAC mechanism not only overcomes the limitations of ZigBee MAC mechanism such as inefficient CSMA/CA and underutilization of guaranteed time slots, but also adapts for different traffic types such as emergency and normal traffic. Our results show that application level throughput and packet delivery ratio increase and packet loss decreases. We also optimize energy utilization by tuning macMaxCSMABackoffs and macMinBE parameters of ZigBee MAC mechanism.

show abstract

“…During the inactive portion, being unable to transmit data, nodes are in an energy saving mode. In [4] the details about how the PAN coordinator specifies the structure of the superframe are given. Conventionally, a GTS is consisted of at least one time slot which is allocated to the requesting wireless device.…”

Section: Standard and Related Workmentioning

confidence: 99%

“…The participating devices are allocated GTSs as in the stepping stone method and showed low end-to-end delay and packet drop ratio. The dynamic GTS allocation scheme in IEEE 802.15.4 by multi-factor proposed in [4] improves the utilization of GTS bandwidth; the allocation is determined by the data size, the delay time and the utilization of GTS time slot but voice packets were not taken into account. Considering a multihop star topology, in this paper we proposed a greedy scheme allocation where GTS requesting nodes priority depends basically on three factors: intermediate hops count, requesting feedback of nodes from previous superframes based on their identification and the waiting delay of unlucky nodes.…”

Section: Standard and Related Workmentioning

confidence: 99%

A GTS Scheduling Algorithm for Voice Communication over IEEE 802.15.4 Multihop Sensor Networks

Kovi¹,

Bleza²,

Joe³

2012

International journal of advanced smart convergence

View full text Add to dashboard Cite

The recent increase in use of the IEEE 802.15.4 standard for wireless connectivity in personal area networks makes of it an important technology for low-cost low-power wireless personal area networks. Studies showed that voice communications over IEEE 802.15.4 networks is feasible by Guaranteed Time Slot (GTS) allocation; but there are some constraints to accommodate voice transmission beyond two hops due to the excessive transmission delay. In this paper, we propose a GTS allocation scheme for bidirectional voice traffic in IEEE 802.15.4 multihop networks with the goal of achieving fairness and optimization of resource allocation. The proposed scheme uses a greedy algorithm to allocate GTSs to devices for successful completion of voice transmission with efficient use of bandwidth while considering closest devices with another factor for starvation avoidance. We analyze and validate the proposed scheme in terms of fairness and resource optimization through numeral analysis.

show abstract

Dynamic GTS Allocation Scheme in IEEE 802.15.4 by Multi-Factor

Cited by 12 publications

References 4 publications

An Efficient Superframe Structure with Optimal Bandwidth Utilization and Reduced Delay for Internet of Things Based Wireless Sensor Networks

An Efficient Superframe Structure with Optimal Bandwidth Utilization and Reduced Delay for Internet of Things Based Wireless Sensor Networks

Reliable and Energy Efficient MAC Mechanism for Patient Monitoring in Hospitals

A GTS Scheduling Algorithm for Voice Communication over IEEE 802.15.4 Multihop Sensor Networks

Contact Info

Product

Resources

About