Wireless connectivity is an essential element for the successful running of many modern businesses. Whether it is an organisation that spans a vast geographical area or an industrial setup that consists of multiple buildings, wireless network performance is key to ensuring that all is well.
One of the key considerations when setting up a wireless network with optimal performance is to perform a Line of Sight (LoS) survey. This is a specialised test that helps engineers understand how the wireless signals will perform before any work is done.
What is a Line of Sight Survey?
A Line of Sight (LoS) survey is a survey that tests if two points, often a transmitter and a receiver, are able to “see” each other without any objects interfering with the line of sight between them. The most common scenarios for using LoS surveys include:
- Wireless point-to-point radio links
- Microwave wireless links
- Wireless backhaul connections
- Outdoor wireless Wi-Fi bridging
- Private wireless networks like LTE or 5G networks
Although radio signals are transmitted in a straight line between antennas, the Fresnel zone that surrounds the line must be clear for efficient transmission. A line of sight survey helps identify any possible interference on the line.
Why Line of Sight Matters
Wireless connectivity relies significantly on ensuring that there is an uninterrupted signal path. This means that structures, trees, vehicles, towers and even changes in elevation can affect the signal received.
When there is an interruption of the line of sight between two points of transmission, this could result in problems such as:
- Decreased data transmission speeds
- Increased instances of disconnection
- Increased latency
- Decreased stability of the link
- Increased cost of maintenance
This helps engineers ensure that a better system is implemented right from the beginning instead of having to make costly changes later on.
What happens during a line of sight survey?
A professional LoS survey process would generally involve several specific steps:
1. Site Walk & Visual Inspection – The area between possible transmission points is inspected by engineers, who identify visible obstacles between them that could affect signal transmission, including buildings, trees, etc.
2. Elevation & Topographical Analysis – Using specialised mapping tools, laser technology, etc., engineers would analyze whether the signal path is clear of obstacles, including its Fresnel zone.
3. Radios or Specialised Equipment Testing – In some instances, temporary radios are installed between two points, which are then tested to ensure that the link is viable.
4. Reporting & Recommendations – A detailed report is provided by engineers, including recommended antenna height, placement, etc., including possible alternatives for the link.
Benefits of Carrying Out a Line of Sight Survey
Some benefits that can be achieved by carrying out an LoS survey before deploying wireless links include:
Accurate Network Design – The survey helps ensure that the network design is based on facts rather than assumptions. This improves the overall reliability of the network.
Enhanced Performance and Stability – Having line of sight helps maximize performance, reduce interference and ensure the overall stability of the network.
Cost Benefits – By identifying optimal antenna positions and mounting points early on in the deployment process, businesses can avoid costly reinstallation or re-allocation of equipment that may be necessary if a survey is not carried out first.
Future Network Expansions – The survey helps businesses expand their networks in the future with increased confidence.
Which Businesses Benefit Most?
Line of Sight surveys are most beneficial for organisations that use wireless communication links over a wide distance, for instance:
- Manufacturing sites
- Logistics and warehousing
- Academic campuses
- Agricultural and rural estates
- Construction sites
- Multi-building business parks
Business organisations with wireless communication links between buildings or over a wide distance can benefit from a line of sight survey.
A Line of Sight survey is one of the most efficient ways of ensuring wireless communication for any business organisation. By identifying any potential problems, the organisation can ensure that the wireless communication system installed performs optimally.
For any business organisation looking to establish wireless communication links over a wide distance, a professional line of sight survey can be beneficial before the wireless communication system is installed. Speak to our team today!
