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Exploring the 700MHz Band:Why It Is Regarded as the"Golden"Frequency in the Communication World
Estimated 15minutes to finish reading
In today's era of rapidly developing communication technology,frequency bands are like"magic keys"in the world of communication,unlocking different"treasures"of communication.Among them,the 700MHz band is particularly favored and is hailed as the"golden"frequency band.What are the secrets behind this?Let's delve into it together.
Superior Propagation Characteristics:Signals Travel Unimpeded
Just as marathon runners experience fatigue,signals also attenuate during propagation.The 700MHz band can be regarded as a"long-distance runner"in the communication world.According to the free-space propagation loss formula,the lower the frequency,the smaller the propagation loss.Compared to higher-frequency bands such as 2.6GHz and 3.5GHz,the 700MHz band experiences much less signal attenuation.This means it can cover longer distances and deliver signals stably to their destinations.Whether in remote mountainous areas or vast rural regions,it can easily provide coverage.
Strong Diffraction:Overcoming Obstacles
When signals encounter obstacles like high-rise buildings or towering mountains,high-frequency signals often get blocked.However,the 700MHz band,with its longer wavelength,demonstrates strong diffraction capabilities.Like a nimble dancer,it can cleverly bypass obstacles and continue on its way.This characteristic ensures stable signal propagation in complex urban environments,preventing communication signals from being easily"intercepted"by obstacles.
Deep Penetration:Full Signal Strength Indoors
Indoor signal weakness is a common problem.However,the 700MHz band has excellent penetration capabilities,allowing it to easily pass through building walls and reach every corner of the interior.This means that indoors,we can enjoy smooth communication services without worrying about weak signals.Whether streaming videos,playing games,or making video calls,the signal remains strong.
Cost-Effective Network Deployment
In communication network construction,base
stations are the key"signal fortresses."The low propagation loss and
wide coverage of the 700MHz band bring significant cost advantages for network
deployment.Calculations show that with the 700MHz band,building 450,000 to
500,000 base stations is sufficient to cover the entire country.If other
frequency bands were used,achieving the same coverage would require a much
larger number of base stations.This would not only significantly increase
construction costs but also lead to higher maintenance and management
expenses.The 700MHz band,with its advantages,greatly reduces the burden on
operators,making communication network construction more economical and
efficient.
Wide-Area Coverage:A Boon for Remote Areas
In rural and mountainous regions with vast areas and sparse populations,as well as high-speed scenarios like high-speed rail and highways,communication network coverage has always been a challenge.The emergence of the 700MHz band is like a timely rain.It can achieve wide-area coverage,bringing convenient communication services to people in remote areas and connecting them closely with the rest of the world.At the same time,during high-speed rail travel,the 700MHz band can also ensure stable signal coverage,allowing passengers to enjoy the internet throughout their journey.
IoT Foundation:The"Invisible Bridge"Connecting Everything
With the advent of the Internet of
Things(IoT)era,the interconnection of everything has become a reality.From
smart home devices to various sensors in smart agriculture,a vast number of
devices need to be connected to communication networks.The low-power and
long-distance transmission characteristics of the 700MHz band make it an ideal
choice for connecting these devices.It acts like an invisible bridge,closely
connecting various devices and facilitating the development of smart
cities,smart agriculture,and other fields,making our lives smarter and more
convenient.
