Analysis of capture probability performance techniques for wireless LAN

Zhao, Junhui; Ugweje, Okechukwu C.

doi:10.1109/vtc.2002.1002802

Cited by 8 publications

(10 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Several studies are made to model capture probability in CSMA/CA systems [21], [25]; the authors of [25] are compared the performances of such methods and showed that the best performing method considers that capture occurs if and only if the power of the desired packet is greater than each of the powers of the joint interfering packets by a factor z, i.e., pwr 0 > z max(pwr 1 , pwr 2 , ..., pwr m )…”

Section: Success Probability Of Cam Transmission Over Ieee 8021mentioning

confidence: 99%

See 1 more Smart Citation

Performance study of CAM over IEEE 802.11p for cooperative adaptive cruise control

2017

View full text Add to dashboard Cite

To cite this version:Oyunchimeg Shagdar, Fawzi Nashashibi, Samir Tohmé. Abstract-The IEEE 802.11p is the de-facto vehicular radio communication technology for road safety and efficiency applications. With the advancements in the autonomous vehicle technology, studies on applicability of the IEEE 802.11p and the related protocols for the autonomous driving applications are needed. In this paper, we study the impacts of vehicular communication on platooning control considering that the ETSIstandardised message set Cooperative Awareness Message (CAM) and the IEEE 802.11p are used for both the platooning and cooperative awareness applications. We first develop a theoretical model for the probability of a successful CAM transmission over IEEE 802.11p between platoon members by taking account of the existence of non-platoon vehicles on the road. The model is verified by comparing against simulation results obtained from the NS3 simulator. Finally, we investigate the impacts of the communication performance on the behaviour of platoons, specially the chain stability, when hundreds of vehicles share the wireless channel. The theoretical model reveals that thanks to the capture effect, communications between platoon members drastically outperform communications between arbitrary two vehicles on the road. The simulation results show that in contrast to an adaptive cruise control (ACC), which does not use vehicular communication, the IEEE 802.11p based vehicle to vehicle (V2V) communication aids for realizing stable platoons in highway scenarios.

show abstract

Section: Success Probability Of Cam Transmission Over Ieee 8021mentioning

confidence: 99%

“…The parameters that are necessary for the theoretical model including CW min , σ, and AIF SN take on the default values of the IEEE 802.11p system listed in Table I [3]. The capture threshold, z, is equal to 5, which is a value derived from the NS3; the same value is used in [25].…”

Section: Model Verification: Performance Evaluation Of Cam Over Tmentioning

confidence: 99%

Performance study of CAM over IEEE 802.11p for cooperative adaptive cruise control

2017

View full text Add to dashboard Cite

show abstract

“…Several capture models has been proposed in the literature 8) . In this paper, we use the model where a packet will be successfully received if the power of the concerned packet exceeds the joint power of the other interfering packets by at least a capture ratio z.…”

Section: Capture Modelmentioning

confidence: 99%

“…, N) is the power of interfering packet i, and η is the power of additive white Gaussian noise. It is of no significant consequence to ignore the noise since the CSMA/CA channel is principally contention limited, the same as ALOHA channel 5), 8) . Therefore, ignoring the effect of noise, the probability of capture can be expressed as…”

Section: Capture Modelmentioning

confidence: 99%

Performance Analysis of the IEEE 802.11 MAC Protocol over a WLAN with Capture Effect

Zeng

2005

ipsjdc

View full text Add to dashboard Cite

In this paper, we use a discrete Markov chain model to analyze the throughput of CSMA/CA protocol in a wireless local area network considering the capture phenomenon, which means the packet with the strongest power may capture the receiver even in the presence of other overlapping packets. The model of capture effect over the theoretical throughput of CSMA/CA protocol in the presence of path loss, shadowing, and Rayleigh fading is obtained and compared with the model without the capture effect.

show abstract

“…In recent times, interest on the effect of capture in IEEE 802.11 [9] based networks has grown [10]- [13]. In [11], the fairness of a wireless LAN in the presence of the capture effect was investigated.…”

Section: Introductionmentioning

confidence: 99%

Exploiting capture effect to provide service differentiation in wireless LANs

Nyandoro

Hassan

IEEE 60th Vehicular Technology Conference, 2004. VTC2004-Fall. 2004

View full text Add to dashboard Cite

Abstract-We investigate the use of transmit power as a mechanism for service differentiation in contention based wireless Local Area Network(LANs). We use a dual transmit power scheme where the power levels are specially selected to guarantee capture whenever a collision occurs between a single high power frame and one or more low power frames. We employ the Distributed Coordination Function (DCF) of the IEEE's 802.11 wireless LAN standard for our simulation experiments. The performance metrics considered are throughput and Medium Access Control (MAC) delay. We specifically investigate the level of differentiation achievable between high power and low power hosts given various ratios of high power to low power hosts. Our results show that differentiation is more distinct when the ratio of high power to low power hosts is small. It was also determined that in a cell with a fixed number of hosts capable of switching between the two power levels, there exists a threshold beyond which the MAC delay for the low power hosts actually decreases with increasing number of high power hosts.

show abstract

Analysis of capture probability performance techniques for wireless LAN

Cited by 8 publications

References 3 publications

Performance study of CAM over IEEE 802.11p for cooperative adaptive cruise control

Performance study of CAM over IEEE 802.11p for cooperative adaptive cruise control

Performance Analysis of the IEEE 802.11 MAC Protocol over a WLAN with Capture Effect

Exploiting capture effect to provide service differentiation in wireless LANs

Contact Info

Product

Resources

About