Proceedings ArticleDOI
Enhanced multi-user beamforming protocol for millimeter wave wireless local area networks
Yi-Ching Chen,Li-Hsiang Shen,Kai-Ten Feng +2 more
- pp 1-6
Reads0
Chats0
TLDR
This paper designs a non-slotted association beamforming training (A-BFT) frame structure for multi-users without separating A-B FT slots in order to alleviate packet collisions due to the shortage of contention and training frames and proposes two multiuserbeamforming training mechanisms.Abstract:
MmWave in the unlicensed 60GHz band is highly discussed due to the rapid growth of wireless communication services. The utilization of microwave spectrum below 10 GHz is almost reaching its limit. Beamforming (BF) has become an essential technique to compensate the high path loss phenomenon of mmWave. IEEE 802.11ad and 802.11ay standardization task group institute directional multi-gigabit (DMG) wireless local area networks (WLANs) supporting mmWave techniques. With wireless devices explosively increasing, the limited number of BF slots in conventional DMG protocols leads to high packet collision probability, which potentially degrades the system performance. Most of the existing research does not take the multi-user BF contention problem into consideration. In this paper, we design a non-slotted association beamforming training (A-BFT) frame structure for multi-users without separating A-BFT slots in order to alleviate packet collisions due to the shortage of contention and training frames. This new proposed structure allows collisions with useful information left in remaining non-collided slots or frames in order to leverage the insufficiency of BF training for multiple devices. Furthermore, in order to further reduce BF collision probability, we propose two multiuser beamforming training mechanisms, including the time-based distributed coordination function (TDCF) and time-based beam-collision avoidance (TBCA) schemes. Simulation results demonstrate that our new proposed frame structure along with proposed TDCF and TBCA mechanisms outperforms 802.11ad protocol.read more
Citations
More filters
Journal ArticleDOI
3D On-Demand Flying Mobile Communication for Millimeter-Wave Heterogeneous Networks
Kai-Ten Feng,Li-Hsiang Shen,Chi-Yu Li,Po-Tsang Huang,Sau-Hsuan Wu,Li-Chun Wang,Yi-Bing Lin,Mau-Chung Frank Chang +7 more
TL;DR: Evaluated system performances for the proposed beam control schemes are evaluated and a real-time prototype of 3D on-demand flying mobile communication for mmWave HetNets is provided.
Journal ArticleDOI
Analysis and Implementation for Traffic-Aware Channel Assignment and Contention Scheme in LoRa-Based IoT Networks
TL;DR: A traffic-aware channel and backoff window size allocation (TCBA) scheme to improve network capacity and latency and a statistical latency-aware network model is designed to derive the closed forms of the optimum packet transmission probability and maximum number of LoRa devices supported.
Journal ArticleDOI
Coordinated Multiple Access Point Multiuser Beamforming Training Protocol for Millimeter Wave WLANs
TL;DR: This work designs an advanced protocol for coordinated multiple AP multiuser training (CMMBT) including variable length framing and adjustable beam training and demonstrates that CMMBT provides flexible training control and achieves the lowest training latency and highest average throughput performance amongst the state-of-the-art solutions in the open literature.
Journal ArticleDOI
Design and Analysis of Multi-User Association and Beam Training Schemes for Millimeter Wave Based WLANs
TL;DR: Simulations are conducted to show that the proposed ABS, DAA, and TDCF/TBCA mechanisms outperform existing methods; whereas higher spectrum efficiency can be achieved by proposed non-slotted frame structure compared to conventional slotted structure.
References
More filters
Journal ArticleDOI
Millimeter Wave Mobile Communications for 5G Cellular: It Will Work!
Theodore S. Rappaport,Shu Sun,Rimma Mayzus,Hang Zhao,Yaniv Azar,Kevin H. Wang,George N. Wong,Jocelyn K. Schulz,Mathew K. Samimi,Felix Gutierrez +9 more
TL;DR: The motivation for new mm-wave cellular systems, methodology, and hardware for measurements are presented and a variety of measurement results are offered that show 28 and 38 GHz frequencies can be used when employing steerable directional antennas at base stations and mobile devices.
Journal ArticleDOI
An introduction to millimeter-wave mobile broadband systems
Zhouyue Pi,Farooq Khan +1 more
TL;DR: This article introduces a millimeter-wave mobile broadband (MMB) system as a candidate next generation mobile communication system and demonstrates the feasibility for MMB to achieve gigabit-per-second data rates at a distance up to 1 km in an urban mobile environment.
Journal ArticleDOI
Millimeter-Wave Cellular Wireless Networks: Potentials and Challenges
TL;DR: Measurements and capacity studies are surveyed to assess mmW technology with a focus on small cell deployments in urban environments and it is shown that mmW systems can offer more than an order of magnitude increase in capacity over current state-of-the-art 4G cellular networks at current cell densities.
Journal ArticleDOI
Millimeter Wave Cellular Networks: A MAC Layer Perspective
TL;DR: This paper provides an integrated view on MAC layer issues for cellular networks, identifies new challenges and tradeoffs, and provides novel insights and solution approaches.
Journal ArticleDOI
IEEE 802.11ad: directional 60 GHz communication for multi-Gigabit-per-second Wi-Fi [Invited Paper]
Thomas Nitsche,Carlos Cordeiro,Adriana B. Flores,Edward W. Knightly,Eldad Perahia,Joerg Widmer +5 more
TL;DR: The design assumptions taken into consideration for the IEEE 802.11ad standard and the novel techniques defined to overcome the challenges of mm-Wave communication are described.