Series: Standards

Post a reply

Natasha Simonovski

Series: Standards

Fri, 10/04/2013 - 09:59 — Natasha Simonovski

The papers selected for this Series present various standards that assist in meeting the explosive demand for content delivery by efficient use of network resources.

The first article, “Efficient HDTV and 3DTV Services over DVB-T2 using Multiple PLPs with Layered Media,” by Hellge et al., describes how DVB-T2 can be adapted to the high transmission rates of future High Definition TV (HDTV) services including three dimensional digital TV (3DTV) services. The DVB-T2 standard from the Digital Video Broadcasting (DVB) consortium is designed to reuse the transmission infrastructure of the first generation digital TV but improves throughput and allocates the bandwidth and frequency resources in a flexible manner [1].

IEEE 802.11ac, an amendment to IEEE 802.11n, is the subject of the second article, by Bejarano et al., “IEEE 802.11ac: From Channelization to Multi-User MIMO.” With IEEE 802.11n, the throughput is increased with MIMO (multiple-input and multiple-output) technology to allow the simultaneous operation of several antennas at both the transmitter and receiver of a single station. This increases the total network throughput to the gigabit range. IEEE 802.11ac is expected to be ratified in 2014.

The third article, “IEEE 802.11af: A Standard for TV White Space Spectrum Sharing,” by Adriana et al., comple- ments an article published in the April 2013 issue [2]. Specifically, the article describes IEEE 802.11af, a stan- dard framework for spectrum sharing among unlicensed devices in the TV White Space (TWS).

Content delivery services have to meet strict require- ments with respect to reliability, service availability, and manageability. The 2013–2016 work program of the Inter- national Telecommunication Union-Telecommunication Standardization Sector (ITU-T) covers efficient content delivery based on network virtualization, software defined networking, and autonomic management. Many proposals

are currently being discussed such as enhanced NGNs (Next Generation Network), NICE1 or Future Networks. The fourth and final article, by Chae Sub Lee et al., “Stan- dardization and Challenges of Smart Ubiquitous Networks in ITU-T,” presents a Korean view called Smart Ubiqui- tous Networks (SUNs). According to its designers, SUNs are intended to support context-aware services through adaptable traffic control and resource management and can be the building block for scalable and reliable services. It is useful to note that they share the same acronym with Smart Utility Networks standardized in the IEEE 802.x committees for deployment in TV white space [3], even though they are conceptually different.

In closing, the editors would like to express their grati- tude to the reviewers listed below in alphabetical order, for their assistance in making the selections and for their gen- erous advice to the prospective authors.

Accettura, Nicola, Politecnico di Bari, Italy
Chang, Kuor-Hsin, Elster Solutions, United States Chen, Chih-Hsuan, Chunghua Telecom, Taiwan Christin, Delphine, Technischen Universität Darmstadt,

Ding, Gang Ding, Olympus, United States
Ding, Haiyang, Xidian University, China
Dressler, Falko, University of Erlangen, Germany
Egawa, Takashi, NEC, Japan
Faria, Gérard, TEAMCAST, France
Haffenden, Oliver, BBC, R&D, U.K.
He, An, Virginia Tech, Electrical and Computer Engineer- ing,

Hytönen, Vesa, University of Jyväskylä, Finland 

Ikram, Ahsan, University of the West of England, United Kingdom

Incel, Özlem Durmaz, Galatasaray Unıversity, Turkey Kafle, Ved, National Institute of Information and

Communications Technology, Japan
Mancuso, Vicenzo, Università di Palermo, Italy
Pucker, Lee, Wireless Innovation Forum, Canada
Sum, Chin-Sean Sum, NUCT, Japan
Uslar, Mathias, OFFIS, Germany
van Halteren, Aart, VU University Amsterdam, Nether- lands
Van Nee, Richard, Qualcomm, United States
Vangelista, Lorenzo, University of Padova, Italy
Webb, William, Ofcom, UK
Wei, Hung-Yu, National Taiwan University, Taiwan 

Post a reply