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Scalable Multicast in Highly-Directional 60-GHz WLANs
- Source :
- IEEE/ACM Transactions on Networking. 25:2844-2857
- Publication Year :
- 2017
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2017.
-
Abstract
- The 60-GHz bands target multi-gigabit rate applications, such as high definition video streaming. Unfortunately, to provide multicast service, the strong directionality required at 60 GHz precludes serving all clients in a multicast group with a single transmission. Instead, a multicast transmission is comprised of a sequence of beam-formed transmissions (a beam group) that together cover all multicast group members. In this paper, we design, implement, and experimentally evaluate scalable directional multicast (SDM) as a technique to 1) train the access point with per-beam per-client RSSI measurements via partially traversing a codebook tree. The training balances the objectives of limiting overhead with collecting sufficient data to form efficient beam groups. 2) Using the available training information, we design a scalable beam grouping algorithm that approximates the minimum multicast group data transmission time. We implement the key components of SDM and evaluate with a combination of over-the-air experiments and trace-driven simulations. Our results show that the gains provided by SDM increase with group size and provide near-optimal group selection with significantly reduced training time, yielding up to 1.8 times throughput gains over exhaustive-search training and grouping.
- Subjects :
- Multicast transmission
Multicast
Protocol Independent Multicast
Computer Networks and Communications
Computer science
business.industry
Distance Vector Multicast Routing Protocol
020206 networking & telecommunications
Throughput
02 engineering and technology
Computer Science Applications
Source-specific multicast
Reliable multicast
0202 electrical engineering, electronic engineering, information engineering
Overhead (computing)
020201 artificial intelligence & image processing
Xcast
Electrical and Electronic Engineering
Unicast
business
Software
Pragmatic General Multicast
Computer network
Subjects
Details
- ISSN :
- 15582566 and 10636692
- Volume :
- 25
- Database :
- OpenAIRE
- Journal :
- IEEE/ACM Transactions on Networking
- Accession number :
- edsair.doi...........4c7fa54283d9805413cfcfa0a3dae4e6