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After the stall was completely on fire,Wuling launched the "magic car" stall, and all the members of the stall first made their fortune from the circle of friends.

In the past few days, the circle of friends has been like this:

film

cold noodles

whole bunch of green onions

Selling vegetables in the rain…

This, goose factory recruitment. . .

It's okay to scan the code to list the currency. . .

Juice stand?

Master Diagnosis Errr…

giving coupons

The boss takes the lead in setting up the stall.

It's really nothing, @scarenao wet hint that you can put a cat. . .

(The above pictures are all from WeChat Moments, intrusive, intrusive, intrusive and deleted)


but,be calm

Because what you see next is the fragrant pastry in the stall,cat1

Price concessions, mobile Taobao, direct scan code, welcome to buy.

However,

A friend asked which industries are more suitable for using Cat 1 in medium and low speed scenarios?

According to the division of high, medium and low network rates, the distribution of cellular IoT connections is roughly the ratio of "136", 10% "high rate", 30% "medium rate", and 60% "low rate".

From the perspective of the technologies that carry these different IoT connection scenarios, with the withdrawal of 2G and 3G networks becoming an inevitable choice, the IoT technology based on 4G/5G (NB-IoT+4G+5GNR) will play a major role in enabling the Internet of Everything . Specifically, in terms of low speed, NB-IoT will continue to meet the needs of large-scale narrow-band low-speed scenarios that do not require voice due to its wide coverage, low power consumption, low cost, and large connections. In terms of speed, 5G will undertake high-speed scenarios with ultra-large bandwidth and extremely sensitive to delay; and after 3G is withdrawn from the network in the future, 4G LTE is recognized by the industry as a technology that will carry mainly voice and medium-speed scenarios.

LTE-connected IoT medium-rate scenarios can be supported by Cat 1 and Cat 4, but industries such as public network intercom, sharing economy, financial payment, wearable/tracking, smart energy, industrial control and other industries require a certain rate (medium and low speed). That is, within 10Mbps for downlink and 5Mbps for uplink), meet certain high-speed mobile requirements, be sensitive to delay, support voice, and pay more attention to low cost and low power consumption.

For this kind of LTE IoT network industry connection requirements that do not require high network speed, but require stable, reliable and low-cost LTE IoT network industry, if the Cat 4 bearer with a maximum uplink of 50Mbps and a downlink of up to 150Mbps is used, the huge bandwidth redundancy is like using Cannons are as wasteful as mosquitoes; moreover, it is difficult for mainstream Cat 4 to meet the above-mentioned industry demands on module cost and power consumption in terms of power consumption and price; while Cat 1 takes into account performance (up to 10Mbps for downlink and 10Mbps for uplink). Speed ​​up to 5Mbps), power consumption, cost (nearly 30% lower cost than Cat 4), comprehensive network coverage and other advantages, it is more suitable for this kind of medium and low speed scenarios with special needs.

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Disclaimer: Part of the material comes from the Internet, infringed and deleted


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