If the network speed, the first thing to look at is the network standard. At present, the most advanced commercial data network is 4G, including TD-LTE and LTE-FDD. Under the 4G standard, it depends on the ue-Category, which is the theme of this paper. It determines the maximum network speed of an operator and the maximum network limit of a 4G mobile phone.
We often hear operators advertise their maximum rate of 4G, and mobile phone manufacturers announce the supported LTE Cat value and maximum rate. Let's list these data:
Cat 1 1: downlink 600Mbps.
Class 9: downlink 450Mbps
Category 6: Downlink 300Mbps
Class 4: downlink 150Mbps
Category 3: downlink 100Mbps
Simply put, in the case of 2G and 3G, the standard is very stable, and basically the network rate is in place once or twice, such as 24Mbps and 42Mbps of WCDMA. 4G is not the case. It has a series, and its core is called carrier aggregation technique. Ordinary 4G has the highest rate of 150Mbps, while dual-carrier aggregation has the highest polymerization rate of 300MBps, and carrier aggregation is even higher. Use Cat to describe the speed of this network.
The reason why it is progressive is because it is difficult to achieve it in one step. At present, most mainstream 4G mobile phones only support Cat 3 and Cat 4, which are highly competitive in baseband and cost-effective. China Spreadtrum, South Korea's Samsung, and the United States' Marvell can all satisfy it. The flagship 4G mobile phone can support Cat 6, and the baseband manufacturers that meet the requirements include Hisilicon, Qualcomm, MediaTek and Intel.
The top mobile phone, the highest is Cat 9, as we all know, this level is only Qualcomm, but recently Intel has also introduced the baseband module of Cat 10. Not long ago, at MWC, Qualcomm also announced its next order-CAT11,and the baseband supporting it will be released at the end of this year or early next year.
At present, the most common mobile phones on the market are Cat 3 and Cat 4, and the mobile phone of Cat 6 is only about 10. Mobile phones are the best in the world. IPhone 6/6Plus only supports Cat 4, and Samsung, LG and Huawei in the Android camp all support Cat 6. In contrast, there are even fewer cats.
On the other hand, the support of the carrier network is not so fast. Domestic status, China Mobile Cat 3, China Unicom, China Telecom Cat 4. An insider close to China Mobile told Lei Feng. Com thinks that China Mobile will launch Cat 6 at the end of the year, but obviously it will take some time and the upgrade process will not be easy. On a global scale, there are only a few types of networks.
In the whole process, the terminal is faster than the operator network. However, in fact, it needs operators to push. Only by improving the warehousing requirements can operators promote the upgrading of downstream terminal manufacturers.
And if you buy the latest mobile phone supporting Cat 9 network, it is no exaggeration to say that it will still be the top distribution network in the world after three years.