Latency minimized probabilistic CSMA/CA

Gau, Victor; Hwang, Jenq‐Neng; Lan, Kung-Ming; Pai, Hung‐I; Chen, Jian-Ren; Chen, Yiyuan

doi:10.1145/2069117.2069121

Cited by 2 publications

(5 citation statements)

References 8 publications

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“…EDeM and LaMP also outperform Sift [92]. It also shows that when n is getting closer to N the performance of LaMP becomes better and better.…”

Section: Performance Of Edemmentioning

confidence: 80%

“…To minimize the latency, we perform dL p ðnÞ dp ¼ 0 and derive the optimal transmission probability p*(n) under n active contenders [92]:…”

Section: Latency Minimized P-persistent Csma (Lmpp)mentioning

confidence: 99%

“…18, the broadcast probability of a node is made to equal (6). More specifically, one more stage of check based on broadcast probability before the node is allowed to transmit, i.e., a repeated conditional counting down process is used in an LaMP [92].…”

Section: Latency Minimized Probabilistic Csma/ca (Lamp)mentioning

confidence: 99%

“…One effective way to estimate the actual number of contenders, n, is done by decreasing the estimate, n _ , exponentially from N with a rate of c along the time evolution at each slot [92]. Figure 20 shows the idea of the proposed EDeM method.…”

Section: Exponential Decrease To Match the Number Of Contenders (Edem)mentioning

confidence: 99%

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Wireless MediaNets: application-driven next-generation wireless IP networks

Hwang

2010

Multimedia Systems

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Thanks to the explosive creation of multimedia contents, the pervasive adoption of multimedia coding standards and the ubiquitous access of multimedia services, multimedia networking is everywhere in our daily lives. Unfortunately, the existing best effort IP network infrastructure, originally designed with little real-time QoS requirement, has started to suffer from performance degradation on emerging multimedia networking applications. This inadequacy problem is further deepened by the prevalence of last/first-mile wireless networking, such as Wi-Fi, mobile WiMAX, and many wireless sensors and adhoc networks. This can be evidenced by more and more fragmentation of application-driven IP-based networks, such as for power grid distribution, networked security surveillance, intelligent transportation communication, and many other sensor networks. To overcome the QoS challenges, the next generation wireless IP networks have to be architected in a top-down manner, i.e., application-driven layered protocol design. More specifically, based on the application media data, compression schemes are applied, the subsequent Network, MAC-and PHY-layered protocols need to be accordingly or jointly enhanced to reach the optimal performance. This is the fundamental concept behind the design of Wireless MediaNets. In this survey paper, I will address the QoS challenges specifically encountered in video over heterogeneous wireless broadband networks and address several application-driven Wireless MediaNet solutions based on effective cross-layer integration of APP and MAC/PHY layers. More specifically, the congestion control for achieving airtime fairness of video streaming to maximize the link adaptation performance of Wi-Fi, the minimum latency event-driven data exchange for distributed wireless ad-hoc sensor networks, and the opportunistic multicast of scalable video live streaming over mobile WiMAX.

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“…EDeM and LaMP also outperform Sift [92]. It also shows that when n is getting closer to N the performance of LaMP becomes better and better.…”

Section: Performance Of Edemmentioning

confidence: 80%

“…To minimize the latency, we perform dL p ðnÞ dp ¼ 0 and derive the optimal transmission probability p*(n) under n active contenders [92]:…”

Section: Latency Minimized P-persistent Csma (Lmpp)mentioning

confidence: 99%

Section: Latency Minimized Probabilistic Csma/ca (Lamp)mentioning

confidence: 99%

Section: Exponential Decrease To Match the Number Of Contenders (Edem)mentioning

confidence: 99%

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Wireless MediaNets: application-driven next-generation wireless IP networks

Hwang

2010

Multimedia Systems

Self Cite

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“…If a carrier is detected, the node waits for the current transmission to finish before starting a new one. Multiple nodes may send and receive on the same media in turn using CSMA [31][32][33][34][35].…”

Section: Related Workmentioning

confidence: 99%

Vehicles Communication and Connectivity Using Persistent Carrier Sensing Multiple Access Protocol

2023

IJIES

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This paper investigates the effectiveness of using P-persistent carrier sensing multiple access (P-Persistent CSMA) on vehicular connectivity as vehicles dynamically form temporary communication networks using simulation and mathematical modelling. In the connected and autonomous environment, effective and efficient connectivity between vehicles (V2V) and between vehicles and infrastructure (V2I) is critical. The simulation was performed in MATLAB and included the investigation of the effect of vehicular density, probability value change, and increase in Backoff time, and change in data frame size. The results showed that as vehicular density, probability, and data frame size increased, throughput decreased as data traffic increased, whereas as Backoff time and probability increased, throughput increased. Furthermore, as data size increases with decreasing probability level, channel utilization improves. Based on these findings and the derived mathematical expressions, a proposed dynamic and adaptive model is presented, allowing for maximum throughput while minimizing collisions. This is accomplished by equating four mathematical expressions and substituting them using iteration to achieve a balanced and optimal level of communication channel utilization by dynamically adjusting the three main parameters under consideration as a function of increasing vehicular density (P-Persistent probability level, Backoff time, and data frame length). To achieve such dynamical and adaptive optimization, four mathematical expressions are used. The resulting model is promising and will improve the efficiency of non-adaptive conventional P-Persistent CSMA. The presented work proved to increase the effectiveness of the conventional p-persistent technique using a multi-dimensional parameter correlation, which is more effective than weighted, slotted, or adaptive P-Persistent approaches.

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Latency minimized probabilistic CSMA/CA

Cited by 2 publications

References 8 publications

Wireless MediaNets: application-driven next-generation wireless IP networks

Wireless MediaNets: application-driven next-generation wireless IP networks

Vehicles Communication and Connectivity Using Persistent Carrier Sensing Multiple Access Protocol

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