An Uplink Medium Access Protocol with SDMA Support for Multiple-Antenna WLANs

Zhou, Sheng; Niu, Zhisheng

doi:10.1109/wcnc.2008.322

Cited by 11 publications

(7 citation statements)

References 10 publications

(9 reference statements)

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“…We have used MapleSoft computing software to solve equations (1)(2)(3)(4)(5)(6)(7)(8)(9)(10)(11)(12)(13)(14)(15)(16)(17)(18)(19)(20) through iterative approach. The equations in Markov chain model is then evaluated using the obtained solution to generate seeds for next iteration.…”

Section: Numerical Results and Discussionmentioning

confidence: 99%

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Uplink Access Protocol in IEEE 802.11ac

Ali

Mišić

2018

IEEE Trans. Wireless Commun.

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The IEEE 802.11ac amendment enhances WLAN throughput by exploiting the spatial diversity of the antennas in a multi-user multi-input multi-output downlink transmission. Still, network resources remain under-utilized in uplink transmission due to single-user communication. In this paper, we propose an access point-controlled MAC protocol (A-MAC) that enables simultaneous transmissions from multiple STAs in uplink. The protocol uses the EDCA channel access technique to initiate multi-user transmission and the OFDMA method to transmit multiple RTSs simultaneously. It also introduces the explicit channel sounding technique by using dedicated OFDM subcarrier blocks for each user. Performance measurement shows that network throughput of the A-MAC is 150% higher than that of a single uplink transmission, thanks to the availability of concurrent multiple RTS transmissions in the uplink. The proposed protocol shortens the backoff time by up to 50% for all traffic categories due to concurrent multiple transmissions and thus enhances the battery life of the nodes. We observe that although the smaller backoff window of high-priority traffic category enhances the network throughput, higher intensity of high-priority traffic drives the network faster to saturation. Furthermore, better network stability and fairness among different traffic categories can be achieved when the dominant traffic has low priority.

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Section: Numerical Results and Discussionmentioning

confidence: 99%

“…The MAC protocol proposed in [13] requires a major change in the IEEE 802.11 protocol. The inclusion of multiple RTS/CTS during random access period increases the overhead burden to the protocol and, consequently, reduces network throughput and efficiency.…”

Section: Related Workmentioning

confidence: 99%

Uplink Access Protocol in IEEE 802.11ac

Ali

Mišić

2018

IEEE Trans. Wireless Commun.

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“…The most sophisticated utilization of smart antenna technology is in a Space Division Multiple Access (SDMA) system. This employs advanced processing techniques to locate and track mobile terminals, and adaptive steering transmission signals directed toward users and away from interferers [9,[22][23][24][25]. In theory, a smart antenna system with M elements can support M spatial channels per conventional channel.…”

Section: Lal's Macmentioning

confidence: 99%

An SDMA-based MAC protocol for wireless ad hoc networks with smart antennas

Wang

Huang

2015

Computers & Electrical Engineering

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“…Space division multiple access is a new technology to optimize performance of current and future mobile communication systems [13][14][15][16][17][18][19]. In mobile communication, it has several advantages which increase the effective communication range, avoid or reduce multipath reflections, and use less radio power.…”

Section: Space Division Multiple Accessmentioning

confidence: 99%

“…Because the smart antenna system has good characteristics, there are many researches using smart antenna system for various wireless networks to promote system performance . Besides, some studies show the smart antenna system is applied with the piconet devices to increase throughput and improve communication quality .…”

Section: Related Workmentioning

confidence: 99%

An efficient power management scheme with SDMA for IEEE 802.15.3 WPANs

Wang

Wen

2013

Int J Communication

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SUMMARY IEEE 802.15.3 is devised for short-distance wireless connectivity within a wireless personal area network (WPAN). In WPANs, a power management (PM) mechanism is used for power saving. The PM enables devices to sleep for one or more superframes in order to conserve power. Space division multiple access (SDMA) is a new technology to optimize performance of current and future mobile communication systems. In this paper, we propose an SDMA-based PM scheme, called enhanced min-degree searching (EMDS) for WPANs. EMDS orders the streams among multiple devices to minimize the total wake-up times. In this scheme, every device that can transmit data at the same time is checked using the SDMA. The total wake-up times will be reduced substantially if the majority of the devices can transmit data at the same time. Simulation results show that the performance of the proposed EMDS outperforms that of the existing approaches.

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An Uplink Medium Access Protocol with SDMA Support for Multiple-Antenna WLANs

Cited by 11 publications

References 10 publications

Uplink Access Protocol in IEEE 802.11ac

Uplink Access Protocol in IEEE 802.11ac

An SDMA-based MAC protocol for wireless ad hoc networks with smart antennas

An efficient power management scheme with SDMA for IEEE 802.15.3 WPANs

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