the reason why our mobile phones can receive signals wherever they go is because of the extensive laying of information service base stations.
the base station is the most important infrastructure of the mobile communication network.
and usually, we will find many antenna combinations surrounded by 36 degrees at the top of these base stations.
they are called antenna arrays.
with the continuous development of antenna technology, the array of up to 8 antennas in 4G era has been gradually replaced by the larger antenna array in 5G.
with 5g technology, the number of antennas can reach 128 or even more.
this large-scale antenna distribution is called Massive MIMO.
Massive MIMO can not only meet the needs of 5G large data transmission, but also be superior in signal quality and coverage.
the traditional single antenna communication mode is one-to-one electromagnetic wave transmission between the base station and the mobile phone signal receiver.
under the premise of no physical steering device, the radiation direction of the antenna in this way is fixed.
this leads to a limited number of users who can serve the same frequency at the same time.
The antenna array adopts beamforming technology.
beamforming is a technology that can adaptively adjust the radiation direction according to a specific scene.
based on the number of antennas and beamforming technology far exceeding that of 4G, the 5G base station can achieve omni-directional stereo signal coverage.
signal strength can be enhanced and signal interference can be reduced by signal transmission superposition in different directions.
Recently, the MBBF221 pre-communication meeting hosted by Huawei was held in Shanghai.
the theme of this communication session is "opening up a new green track for 5G Massive MIMO".
gan bin, president of wireless product line, shared the next breakthrough innovation direction of Massive MIMO at the meeting.
under the dual-carbon strategy of "peak carbon dioxide emissions, carbon neutral" in China, all industries aim at green carbon reduction and practice the idea of energy saving and emission reduction.
although the carbon emission of the communication industry accounts for a very small proportion in all industries in the world, as the world's top communication equipment supplier, Huawei is still committed to leading the direction of green energy-saving industry through technological innovation.
Huawei took the lead in introducing Massive MIMO into 4G networks in 214.
in the 5G era, Massive MIMO is combined with large bandwidth, and the bit energy efficiency is improved by more than 2 times compared with LTE 4T4R.
at present, the way to save energy for Massive MIMO in the industry is usually to continuously optimize the active parts such as intermediate frequency and power amplifier.
the performance of large-scale antenna array is improved mainly through the innovation of baseband algorithm, antenna and other hardware and software equipment.
the windward area of Huawei Massive MIMO (large-scale antenna) is only .3m2, which is far less than the windward area of the low-frequency sky in stock of .7m2..
barrier-free deployment can be achieved on the basis that the windward area is less than .8 square meters according to the engineering specifications of the sky.
under the condition that the terminals receive the same power, the base station can be configured with lower transmission power, which can effectively reduce the energy consumption of the base station.
in the 5G era, the demand for big data transmission is quite frequent, and the number of base stations deployed will not be less.
although the reduction of energy consumption of a single base station is not much, the reduction of energy consumption of the overall base station is still considerable.
the deployment capability and cost performance of Huawei's 5G communication network will be further improved.