Wireless radio transmission systems are becoming increasingly important as a tool supporting the corporate network infrastructure.
There are a variety of formats that each have specific contributions to the design of a corporate computer network.
Generally a Wi-Fi type of connection in homes. Offices and public area hotspots offering connectivity for mobile devices such as laptops, mobile phones, tablet computers etc. Wi-Fi networks are now being rolled out in the public transport on the Underground, in transport interchanges on trains and on buses. Wi-Fi radio system operates on internationally agreed standard frequencies so that in some urban areas high traffic demands create congestion which may in turn cause connections difficulties.
MESH radio system offer short range connectivity with multiple automatic routing options on the back haul (link back to the source network). Some MESH radio systems offer dual or triple band operation where each system offers backhaul (link to the network) and local Wi-Fi connection for mobile access. Depending on the requirement a third radio system can also offer wireless services for the emergency services (‘blue light’) on a new dedicated first responder frequency (the frequency has not yet been made available in all countries).
- Point –to-Point
Point-to-Point (PtP) radio system are typically used as main links for back haul links between buildings or on campus and to offer redundancy (1+1) or hot standby.
MESH can be deployed externally and link to internal building based MESH systems to provide the entire network path. MESH can provide connectivity for WiMAX broadband wireless access (BWA) systems as they are developed.
Capacities of current radio systems range from 2MB right up to 1.2 GB. Point-to-Point systems operate on a wide range of frequency bands including licensed, ISM (industrial, scientific and medical), licence free and OFCOM’s ‘light touch’ licensing regime.
Some Point-to-Point systems operate in the microwave and millimetric frequency bands.
Point-to-multipoint (often abbreviated as P2MP, PtMP, or PMP) provides low cost secure access to a radio network that is often used for ISP for broadband access, last mile connection for small offices, and increasingly for connection to IP CCTV systems.
The low cost CPE (customer premises equipment) radio or subscriber module connects to a cluster of radio access point similar to a cell site. From this location a backhaul link provides final connection to the network. Many CPEs or subscriber modules can connect to a single access point with the bandwidth shared (contended). The amount of bandwidth allocated to each CPE or subscriber unit can be restricted by a software management system.
- Radio Systems Management and Security
Radio is often seen as a weak spot when assessing the corporate computer networks vulnerability to attack. Careful design and the utilisation of specialist tools can make the wireless radio network as secure as the wired component.
Security standards have been set internationally and the use of management and security software can provide reassurance by proving full compliance with all current security standards.