Mesh - community networks of the future?

Mesh networks differ from other networks in architecture - the component parts can connect to a number of neighbor nodes. It allows for continuous connections and reconfiguration around broken or blocked paths by jumping from node to node until the destination is reached.
The main features of wireless mesh networks:

• dynamically arranged connections - routes of packets depend on the state and work load of individual nodes,
• due to switching between the nodes - the risk of disruption of data transmission is considerably lower than in the case of star-shape architecture,
• possibility of quicker transmission thanks to lack of a central node,
• easy expansion by adding new nodes,
• new nodes can be installed in any places where they can communicate with other nodes and power supply is available.

So far, there is no final standard for this kind of wireless networks, but the work is on track since 2003 (the proposals were submitted to a vote in 2005). The result is IEEE 802.11s - a draft IEEE 802.11 amendment for mesh networking. Lack of accepted standard is the reason that mass development of the networks is a matter of time. This kind of solution is often used for applications requiring good network coverage and high reliability, where wired systems are not available or feasible.

Halogen-free TRISET cables

Halogen-free TRISET cables The new cables from TRISET family - TRISET-113 HF E1019 and TRISET-11HF E1029 are manufactured using HF (halogen free) technology. When burning, they do not give off toxic gases.
This feature allows to use the cables in public buildings (hospitals, schools, theaters etc). In such buildings there have to be used safe cables which, in the case of fire, do not pose any additional risk for people. It is not permissible to use compounds of chlorine, fluorine, bromine, or iodine - the halogen compounds hazardous to health (carcinogenic) that would give off in high temperature.

Cables in PVC sheath (containing chlorine) and those based on polyethylene and polypropylene (admixture of bromine) are halogen cables. In the mentioned halogen-free cables there are used more expensive aluminum compounds instead.

The halogen-free TRISET cables belong to NC/LSOH group, i.e. they do not emit corrosive fumes (Non Corrosive), or much smoke (Low Smoke), or, of course, halogen compounds (O Halogen - Zero Halogen - sometimes marked as ZH).

The both cables comply with EN 50268-1, 2 - (low smoke) and EN 50267-2-2 (non-corrosive, halogen free).
TRISET family has been awarded at SatKrak 2007 (international satellite trade fair in Krakow). Due to low loss, high screening efficiency, and perfect matching, TRISET cables ensure high performance of multiswitch systems and large cable installations (MATV, cable TV).

TRISET HF cables comply with highest safety standards and feature outstanding technical parameters:

• high screening efficiency (A-class: above 100 dB),
• low loss (at 2150 MHz: TRISET-113HF - 27.7 dB, TRISET-11 HF - 21.0 dB).

ANGA Cable 2008

ANGA Cable 2008, May 27 - 29, Cologne, Germany. This year's trade fair was a success - more exhibitors and visitors, perfect order and excellent organization. There were present the "typical" companies like TELEVES, TERRA, ALCAD, Kathrein, but also the representatives of Web technology, e.g. Cisco.

Trends in IP video transmission

The main problems in transmission of video data is size of the files and sensitivity of video streams to time delays. Currently and in the foreseeable future, H.264 algorithms ensure the best results - the lowest bandwidth and disc space requirements, the shortest download time. The parameters are about 30% better than in the case of MPEG-4 ASP compression. The newest codec is used by the most technologically advanced companies using mainly Texas Instruments platform (DaVinci).

Market research shows that in 2011 H.264 will catch up with MPEG-4 and then become the undisputed leader.
The tendencies were the subject of ACTi lecture at IFSEC in Birmingham.

Trends in television in Olympic year - Anga 2008

The next Anga Cable in Cologne is taking place from May 27 to 29, 2008. This exhibition and conference is dedicated to cable television, broadband networks, and satellite broadcasting. There will be 369 exhibitors from 28 countries. The organizers are expecting about 10 000 visitors.

ANGA Cable has become the most important trade exhibition of TV technology and related areas in Europe.

Great sporting events are very important for television market - they generate demand for new services, can be a breakthrough in introducing new technologies to the public.

This year the technology that has a chance for popularization due to sports transmissions is HDTV.
The first step was free HDTV transmissions on the British Freesat platform, which began in May. It has created demand for suitable receivers, adaptation of existing antenna systems to new requirements, multiswitch installations.

On the one hand it seems that there is a market opportunity for DVB-T receivers with MPEG-4 decoders. Practically all European countries plan to introduce the system enabling terrestrial HD transmissions. On the other hand, only several countries have adopted this standard, so the manufacturers cannot take advantage of mass production.

CCTV at IFSEC

CCTV comapnies at IFSEC:

• Panasonic
• JVC
• Norbain
• Bosch
• Dedicated Micros
• Sanyo
• Sony
• Samsung
• Mitsubishi
• Dallmeier
• Cieffe
• IndigoVision
• Axis Communications

IFSEC 2008 untill tomorrow

IFSEC 2008: 12 - 15th of May.

Sony, Panasonic, JVC, Norbain, IBM, Group 4 Security, Honeywell, Siemens… The exhibition showcases the very best manufacturers and distributors in the industry and is the ideal opportunity to source a range of product and services under one roof.

NEED HELP WITH YOUR EXPORT STRATEGY? LOOKING TO INVEST IN THE UK?
"Representatives from British Embassies and Consulates in Bulgaria, Czech Republic, Egypt, India, Morocco, Poland, Portugal, South Africa, Sweden and Turkey will be at IFSEC and can offer first hand knowledge and experience of their markets." - information at organiser's website.