All this starts with the three 3GPP meetings of the 5G code scheme in 20 16 years. The enterprises attending the meeting mainly include the polar camp headed by American companies and China Hua. As we all know, in the formulation of 5G standards, Qualcomm enterprises, Samsung, Nokia, Huawei, ZTE, Lenovo and other enterprises occupy a considerable proportion in the patent pool, so in the competition of 5G standards, the formulation of standards affects the interests of all manufacturers.
What is Lenovo's 5g voting event?
Types of 5G standards
5G, as its name implies, is the fifth generation of mobile communication technology and an extension of 4G. It has the characteristics of high performance, low latency and high capacity, and is faster than 4GLTE. When receiving and sending information in wireless communication, it needs to be solved by coding and decoding to prevent information errors when sending. Because the world needs to communicate with each other, this standard needs to be unified. According to different scenarios, there are many coding and decoding schemes.
The 5G defined by 3GPP is divided into three scenarios, including Enhanced Mobile Broadband (eMBB), High Capacity Internet of Things Communication (mmTC) and Low Delay and High Reliability Communication (uRLLC). For three scenarios, there are Polar codes dominated by Huawei, LDPC codes dominated by the United States and TruboLDPC codes dominated by Europe in China. At the 20 16 3GPP meeting, it was proposed that only LDPC and polar codes should be used.
Importance of code selection
The 4G code we use is the leading Turbo code in Europe. However, for a better and faster 5G network, the Turbo code is simple, the decoding is complex, and a lot of operations are needed. Facing the faster and more informative 5G, it is obviously unable to meet the characteristics of low latency.
In fact, LDPC codes and polar codes come from the United States. However, a code scheme involves many patents. China Mobile started late, and Huawei also has patents related to LDPC codes, but many time-honored manufacturers have mastered the Polar codes published in 2008. At that time, Huawei had a certain influence in the industry.
Once the patent coding method is determined, the manufacturer with patent will definitely have an advantage. In the past 3G and 4G era, with the rise of smart phones, every smart phone sold in China needs a certain patent fee. Patent factories in America and Europe make a lot of money. Imagine that if the 5G standard is mastered by domestic manufacturers, our smart phones and communication fees will be more economical in the future.
What is Lenovo's 5g voting event?
facts of an incident
In fact, there are three LDPC technical conferences related to 5G coding, namely, RAN 1#86, RAN 1#86b and RAN 1#87. These technical meetings are not held regularly, but when it is necessary to re-plan technical differences, relevant member companies in the industry will also participate. If the meeting doesn't solve the problem, continue to start again. Recently,
Actually, there is some misunderstanding about this matter. Because there is no such thing as voting to decide the outcome in the 3GPP technical meeting, that is, voting that changes the result because it is different from one vote. For a simple example, if Polar code gets 50 votes and LDPC code gets 52 votes, both of them have many supporters, and the final result needs to be discussed at the meeting. Judging from the minutes of the meeting at that time, at the RAN 1#86 meeting, due to
At the RAN 1#86b meeting, Lenovo and the acquired Motorola Mobility proposed that LDPC codes should be the only codes for data channels, namely long codes and short codes. Huawei put forward a suggestion that Polar code should also be one of the data channel schemes, with long code as LDPC and short code as Polar. But this time, China OPPO, ZTE, Xiaomi, vivo and many overseas companies support Huawei and LDPC codes.
But in the end, the origin of public opinion provided three options at the meeting, which made members express their opposition. There are 33 people who oppose the long code LDPC and short code Turbo schemes. There are 27 people who oppose the long-code LDPC and short-code polarization schemes, which is a controversial voting behavior of Lenovo. Because Lenovo voted against the Polar code supported by Huawei camp. All the long codes and short codes supported by American manufacturers are LDPC, and there are 24 competitors. Finally, public opinion said that Huawei voted at 24: 0.
Finally, the meeting chose to use LDPC code, and the short code needs to be discussed at the next meeting. In fact, even if Lenovo voted in favor at that time, it would not affect the result, because all companies except Huawei supported the use of LDPC codes for long codes at that time. At the third RAN 1#87 meeting, Huawei organized 55 camps aiming at using Polar code, including Lenovo and Motorola. By contrast,
However, the 3GPP technical meeting is not a voting meeting. In the 3 1 camp organized by American companies, Samsung, Intel, Ericsson, Verizon, etc. have important big companies in the industry. In contrast, Huawei has more supporters, but its voice is significantly lower than that of large companies. Finally, under the tough attitude of American companies, Huawei agreed to use LDPC short codes, and finally used Polar codes to obtain control channels. Finally, the final result is
What is Lenovo's 5g voting event?
5G test operation
With the acceleration of 5G network construction, 5G chips and 5G networks are ready. It is understood that China Mobile will take the lead in conducting 5G field tests in five cities including Hangzhou, Shanghai, Guangzhou, Suzhou and Wuhan, and then demonstrate 5G application services in 12 cities such as Beijing, Chengdu and Shenzhen. China Unicom said that it will conduct tests in Beijing, Tianjin, Qingdao, Hangzhou, Nanjing, Wuhan, Guiyang, Chengdu, Shenzhen, Fuzhou, Zhengzhou and Shenyang 16 cities. In addition to the six cities identified by China Telecom, there will be six test cities.
Summary:
With the rapid development of science and technology in China, China manufacturers have more and more say in the mobile communication industry. China, which has a huge scene and market, predicts that 5G will be at the forefront. Besides Huawei, ZTE, Lenovo, OPPO and other big brands, more China manufacturers need to make joint efforts. Only by making our products and technologies more mature and applicable will we not have to rely on imports.