5G-based owners sawed?
Early impression
The Board consists of Beijing Unicom 5G test construction, Huawei offers a full end-to-5G commercial system equipment, bear with the core network, 5G base station, carrying net. Beijing Unicom has planned 11 5G sites in the Financial Street area, forming a continuous distance of about 3.6 km of road network covered.
Entering the room, we heard the familiar sound of roaring equipment operation, open the cabinet door, device running from top to bottom in order is: 5G indoor power blade, 4 / 5G total box macro station BBU, 5G Only BBU, 4 / 5G common housing chamber divided BBU, 4 & 5G RHUB, access IPRAN ATN890B iron and lithium batteries.
Out of the room, to the roof, a support 2/3 / 4G multiband antenna and a passive active antenna 5G 3D MIMO eye for 1 + 1 day minimalist surface.
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Huawei, Ericsson, ZTE, Nokia's four giant 5G base station to share! After reading the early impression 5G base station, you are not already pouring heart with an unspeakable excitement, anyway, I estimated a series of questions in my mind it too!
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5G base station is not to say it complicated? It looks very simple thing? The blade power is what the hell? Iron lithium batteries is what stuff? ...
Let us now announced one by one answer.
Why 5G base station so simple?
Originally thought, the next 2/3/4 / 5G coexistence network, Unicom's existing network and have GUL three standard 900M / 1800M / 2100M tri-band, and then the introduction of new spectrum and new 5G modules, base station sites will be more complex, will increase site Tower rental costs and energy costs.
But the actual situation is not.
In actual deployment, 5G device supports all standard high-capacity BBU product solutions, N in 1 multi-system integration and the full-band RF antenna to deliver a minimalist site, reduce energy consumption and Tower rent. Structured as follows:
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1 + 1 Day minimalist surface: 1P (Passive, passive) incorporated the multi-port surface day Sub 3G network now face stock days, 1A (Active, active) 5G 3D MIMO separate days surface.
Multi-frequency module-one: By 1.8G + 2.1G dual 4T4R like when multi-frequency module 1 2, RF module streamlining the tower, the support surface 1 + 1 day minimalist incorporated;
All standard baseband: mass BBU all standard, single-mode six-one BBU support;
Stop a cabinet: smart outdoor cabinets, to achieve a one-stop counter 0 room, saving room investment of resources.
All standard full-band and 1 + 1 equipment minimalist day surface, greatly simplifying the complexity caused by 2/3/4 / 5G total station, increase or less can be achieved without increasing the tower rent 5G times, operators reduce operating costs .
Then answer the other two questions:
Blade power is what the hell? Iron lithium batteries is what stuff?
5G deployment, base station power matching faces three major problems:
First, electricity expansion difficult. Mains expansion approval long cycle, high cost, at the same time, according to the previous design specifications, redundant power application amount or the amount of computing power are in accordance with the peak power consumption of a base station to be considered, so that, more than the current electricity the amount would be much less, we need to apply more electricity lines, the cost will be higher.
Second, most of the switching power supply room (DC power supply) capacity constrained, or new capacity is needed. If the new scheme according to the traditional construction, will bring lack of room space, lack of load-bearing (mainly lead-acid batteries) and other issues.
Third, the conventional power limit 5G deployment. 5G wireless master device (in particular AAU) power consumption is increased, prior to -48V DC power supply standard, low-voltage, large-current, short-distance transmission, results in a reduction of power is available (as AAU by -48V power supply distance is less than 40 m @ 6 square cable, while the actual power AAU scene from 70% 40 to 70 meters).
To this end, 5G need to introduce new communication energy solutions:
First, the introduction of lithium iron group, clipping down the cost of electricity introduced
Mains difficult for expansion, 5G electricity amount and the average age of the base station considered in the base station power, by mains iron + lithium secondary battery discharged in the common peak, to ensure that the base station power, the battery charging trough. Minimize the amount of electricity to re-apply, speed deployment, reduce electricity costs cited.
Meanwhile, compared with conventional lithium iron group of lead-acid battery, lighter, faster deployment, minimal quantities solves the floor space limitations and the carrier, and separated from each other with the conventional power scheme, independently of each other.
Further, 5G program uses energy output -57V, -48V power under the same conditions as compared to 60% reduction in line loss, thereby reducing the demand for electricity again.
Second, the introduction of blade power scheme, reform-free indoor and outdoor on-demand backup power
5G wireless master device for increasing the power in the room using an indoor power scheme blade (Indoor Blade), the master device co rack, satisfy 5G apparatus (including BBU, AAU) electricity demand. Blade Power embodiment includes lightweight, small footprint, easy to deploy, etc., and separated from each other with the conventional power scheme, independently of each other. For outdoor AAU remote station, using the DPS (distributed power) AAU nearest power scheme, according to the need to go straight module and a cross embedded with lithium, and a hold AAU mounted on the same pole, zero area, rapid deployment, solve the traditional scheme (outdoor cabinets, embedded power supply and battery) existing property coordination difficult, difficult approach, the problem of higher rents.
Third, the moderate boost, increase power availability
-48V power for the conventional distance limitations 5G AAU deployment issues, 5G program uses energy -57V constant voltage power supply cable 6 square distances of up to 100 m, line loss by 60%. Close to 100% of the available power.
5G network architecture long-sawed?
This figure clearly below 5G depicts a wireless network architecture:
5G wireless network 4 / 5G common macro stations, 3D MIMO, cloudified spectrum downlink decoupling, the DC dual connection rod, micro stations, and other indoor digital technologies, three-dimensional network to achieve full coverage of the multi-scene to meet the growing demand for network capacity and services.
3D MIMO antenna technology
64T64R 3D MIMO having a wide coverage, high capacity, strong anti-interference ability, etc., suitable for high traffic scene coverage; Meanwhile, it has a vertical dimension of freedom, but also to meet future 50m ~ 300m digital low coverage. Beijing Unicom Experimental Station Drive Test 5G shows the bandwidth 100M in the 3.5GHz frequency band, 64T64R can ensure that the average rate over 1Gbps.
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Decoupling down the line
Is well known, the higher the frequency of the radio signal, the larger the propagation loss, the smaller the distance covered. 5G base station adopts 3.5G frequency, higher than 2/3 / 4G bands, although since the downlink coverage AAU power equipment and multiple-input multiple still satisfy 4G equal coverage, but due to the ability to uplink coverage mobile transmit power or the like restrictions, short board covered 5G.
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To overcome the shortcomings uplink coverage, the vertical line 5G introduced decoupling techniques, i.e., uplink traffic switching in the base station to the existing network 1.8G 3.5G cell edge, so as to extend the effective coverage 5G, 5G 4G and achieve a total points were covered, great savings investment.
DC connector bis
Dual DC terminal connected by means 5G 4G and 5G dual network connection, on a test station Beijing Unicom 5G, 4T4R RF module by superimposing a 2.1G cell decoupled in the vertical line, the use LTE2.1G 20M 4T4R, 1.8G 4T4R and 3.5G 100M 64T64R polymerized, to achieve a single user download speeds up 3Gbps.
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Digital divide Room
Traditional room divided difficult to meet the needs of the times 5G, indoor coverage digitization is inevitable. Huawei 5G LampSite indoor coverage digital solutions support Sub3GHz + C-Band Multi-frequency integration, 5G NR + LTE multimodal integration, + fiber cable and the multi-transport integration eMBB + IoT + navigation multi-service integration can be achieved "no line move "," point does not increase "smooth 5G support expansion and evolution to protect investment.
China Unicom 5G sail
5G is a new wireless communication network standards, will bring new capabilities and experience network. China Unicom 5G has been good preparation and overall layout.
The early stage of China Unicom has launched 5G network test pilot and demonstration of innovative businesses in the country 17 cities, including business intelligence demonstration Winter Olympics, wisdom, health, wisdom security, 5G vehicle networking, manufacturing intelligence, wisdom, education, wisdom footprint, and many other large video 5G innovation business, laid a solid foundation for the full commercial trial.
Beijing 5G model as the first city of China Unicom Group, are also being planned, step by step to promote commercial 5G.
Overall layout: NEXT
August 13, China Unicom Beijing Branch officially released "5G NEXT" program, and Beijing through the Authority, by letter, Huawei jointly launched the "5G NEXT" program.
5G NEXT specifically includes four aspects:
New Network: 5G network as the next generation mobile communication network, with a large bandwidth, low latency, the advantages of multiple connections, network coverage is more ahead.
Experience: Leading Web experience for users to create a seamless link to the wisdom of life new business network and immersive network-aware.
X: 5G limitless future applications possible. 5G slice technology can provide a rich variety of applications customized network capabilities, slicing a service, enabling thousands of lines of all trades.
Technology: Technology is changing the world, to promote the power of the future, but also make life more convenient, make work easier and make businesses more efficient source.
Specific deployment: 5 × 5 + X
In the overall architecture "5G NEXT" program, in particular through the "5 * 5 + X" to be deployed ground that five key areas, five key application scenario couple more scenes segment, and a catalytic infinite possibilities business needs.
Five key areas, including: the 2022 Beijing Olympic Winter Games, 2019 Yanqing World Park, along the Chang'an Avenue and the Financial Street, Beijing city deputy center, the new airport Beijing;
Five key scenes include: autopilot, wisdom, medical, industrial Internet, smart city, the new Beijing airport.
5G has already set sail. If the freeze is developed from standard to nine months of pregnancy, birth and now has 5G, we have clearly seen it looks like, hear its voice, and is a planned, step by step towards the next decade mobile communications.
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