After the ZTE incident, when the online rumor was vying for the 5G coding standard, ZTE smashed Huawei's knife and voted for Qualcomm. However, this is a complete rumor.
Let me talk about the three major scenarios.Enhanced Mobile Broadband (eMBB) is designed to provide users with a 1Gbps user experience rate and a 10Gbps peak rate in densely populated areas. In the traffic hotspot area, traffic density of tens of Tbps per square kilometer can be achieved.
Massive Machine Type CommunicaTIon (mMTC) can not only connect medical instruments, household appliances and handheld communication terminals, but also to smart cities, environmental monitoring, intelligent agriculture, forest fire prevention, etc. Data collection is the target application scenario and provides support for over 100 billion network connections.
Low-latency, high-reliability communication (uRLLC, Ultra Reliable & Low Latency CommunicaTIon), which is designed for intelligent unmanned driving, industrial automation, and other services requiring low latency and high reliability, providing users with millisecond-level end-to-end delay. And close to 100% business reliability guarantee.
Again, what is a long code, short code.Optimized coding is dedicated to representing an instruction with the shortest number of bits, the shorter the efficiency. In the case where the number of instructions does not change, the more commonly used instructions are of course shorter, the better, but the unequal instructions will cause a heavy processing burden on the receiving end. Then using equal length encoding will obviously result in a large amount of invalid data transmission, wasting bandwidth. The instructions are then grouped into two groups (individually there are also three groups), which are often represented by relatively short binary digits, and are not commonly used with relatively long binary digits. Short codes represent commonly used instructions, and long codes represent instructions that are not commonly used.
The control channel is an information channel for transmitting signaling or synchronizing data, and is mainly used for transmitting instructions to operate a lower-level network device. In the process of transmitting information through the network, errors may occur due to external interference. In order to correct these errors and prevent further accumulation of error information, the error correction and error detection coding of the digital signal to be transmitted in the channel is channel coding. As the transmission speed increases and the types of transmission protocols work at the same time become more and more, the number of data channels also increases greatly, and the transmission of channel coding gradually becomes independent, which is responsible for the dedicated channel, that is, the coding channel, which can Enhance the ability of data to withstand various interferences as it travels through the channel, improving system reliability.
ZTE Dingli supports Polar Lenovo to vote for LDPCAt the time of voting, Polar and LDPC became the last competitors.
At the time of voting, there was a round of Chinese and Taiwanese manufacturers who voted for Polar, and both ZTE and Nubia voted for Polar. In the other round, in addition to Lenovo and Motorola voted for LDPC, Chinese manufacturers collectively abstained.
It’s a rumor that Zhongxing’s Huawei is rumored on the Internet.
Regarding the collective waiver of Chinese manufacturers, the iron flow speculation may be that Polar's time is too short, the technology is not mature enough, and the Solution has a clear gap with respect to LDPC. However, domestic manufacturers are not good at investing in LDPC because of the same advance and retreat considerations, so they have to choose collective Abstain. And Lenovo and MOTO vote for LDPC. .. .. may be entirely for commercial considerations, or to fully demonstrate that you are an international company. .. ..
After the results of the voting in that year, some media advocated that “Huawei crushed Qualcomm and won the 5G eraâ€, but in fact, Polar was only determined as the eMBB scene standard for short code control channels. The control channel and the code channel of the eMBB scene long code and the short code code channel are all selected as LDPC.
It must be pointed out that although Polar has won the support of Chinese companies, it does not belong to China, and it does not belong to Huawei. The polar code was proposed by a Turkish scholar and many patents are not in the hands of Chinese companies. The reason why the polar code is pushed is mainly because the technology is relatively new, and the technology accumulation of European and American companies is relatively small. On the other hand, LDPC technology has a longer time and is relatively mature. European and American companies have more technology accumulation.
In addition, due to the LDPC technology time out, many patents have expired or are expiring. It is normal for many manufacturers in Europe, Japan, and the United States to choose LDPC to achieve their respective interests.
To sum up, Lenovo/moto is invested in LDPC, and both ZTE and Nubia have invested in Polar.
It is not necessary to look at this vote with a very rich "national sentiment". After all, Polar is not Chinese original, many patents are not in the hands of Chinese companies, and more is that the industry is very weak in the absence of original good cards. The player borrows a card in his hand as a weapon to defend against European and American technology companies. Since many LDPC patents expire or expire soon, the final vote is more in line with the interests of global communications vendors.
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