As we all know, pre-commercial is the necessary stage for the subsequent commercialization of 5G. Huawei has won the leading scientific and technological achievement award in the 5G pre-commercial system, which means that Huawei will have the right to speak with technology and standards. In the formulation of the future 5G standard, Huawei will become a force that cannot be underestimated. At the World Internet Conference held in Wuzhen, Huawei's 5G pre-commercial system won the World Internet Conference's leading scientific and technological achievements award, which attracted wide attention in the industry, and also let the industry once again focus on the hot 5G. So to what extent is 5G currently developing? What are the challenges encountered during the period? What did Chinese companies do? As we all know, 3G and 4G enable humans to enter the era of mobile broadband compared with previous generations of mobile communications, and 5G can incubate new applications in various industries, enabling humans to enter a digitally connected society. 5G not only pays attention to the communication between people, but also extends the network to the connection of things, and truly opens the era of “Internet of Everythingâ€. In May of this year, the 5G economic research report released by IHS predicts that by 2035, 5G can bring the entire global economic output, which can reach 12.3 trillion US dollars; it can increase 22 million jobs; and drive the global investment of 200 billion US dollars. . It is precisely because of the huge social and economic benefits contained in 5G that the industry is eager for 5G, especially in the communications industry and manufacturers. For example, Huawei invested $600 million in the 5G standard phase research in 2009. In 2017, Huawei invested more than 4 billion yuan in 5G product development. In 2018, this number is expected to exceed 5 billion yuan. More than 5,000 people are engaged in 5G project development. In November last year, Huawei's Polar code solution became the solution for 5MB control channel eMBB scene coding, which attracted worldwide attention. In fact, these are just the tip of the iceberg of Huawei, which is represented by Huawei. Due to the brand newness and complexity of 5G, the challenges encountered by the 5G are greater than those of the previous 3G and 4G. The ability is undoubtedly a more severe test, and who is the root of whether Chinese companies can finally win in the 5G war. As mentioned above, Huawei's Polar code scheme has become a solution for 5G control channel eMBB scene coding, which has attracted worldwide attention, but Huawei's contribution to 5G original technology is far more than that. Take Huawei's uplink and downlink decoupling architecture technology innovation as an example. Many people know that because 3.5GHz has rich spectrum resources, it will be 5G main capacity and overlay layer. The challenge is that the 3.5GHz frequency band is in the scale array. Under the condition of antenna and large bandwidth spectrum resources, the downlink coverage and capacity indicators are very satisfactory, but the improvement of the uplink indicators has encountered bottlenecks. In order to avoid operators in the 5G era, compared to the 4G era to create too many new sites (do not increase or even reduce costs), you can increase the experience by dozens of times, overcoming the upstream bottleneck is undoubtedly a serious challenge. The uplink and downlink decoupling breaks the limitation of the traditional mobile communication uploading and downloading frequency binding. Through multi-band stereo coordination, while enjoying the 3.5GHz downlink large capacity, the 5G network uplink is carried at 1.8GHz, maximizing spectrum resource utilization. Significantly improve network coverage. For example, in the UK, Huawei and BT/EE opened a 5G pre-commercial site locally. During MBBF 2017, 5G uplink and downlink decoupling was successfully tested in London, and C-Band coverage was upgraded through 5G uplink and downlink decoupling to realize C-Band. And 1.8GHz co-site with the same coverage deployment. According to the results of the test, after using the uplink and downlink decoupling technology, the uplink coverage is improved by 11dB9 (the coverage radius is increased by 73%), and the coverage area of ​​the base station can be increased by three times. In addition to the above, a few days ago, Vodafone and Huawei completed the industry's first end-to-end uplink and downlink decoupling technology verification based on the latest 5G standard in Milan, Italy. It can be seen that the 5G uplink and downlink decoupling does bring a revolutionary full-spectrum network construction mode, which breaks the limitation that the uplink and downlink transmissions of the traditional communication system must be bound to one frequency band, and can be in a new spectrum such as the C-band. The deployment of 5G can be shared with the current 4G co-site, with common site address, same coverage, fast deployment, continuous coverage in the urban area, and greatly improved the edge user experience. Based on this, the program has been widely recognized by the industry at the 3GPP 5G standard conference. Global mainstream operators including China Mobile, China Telecom, China Unicom, Deutsche Telekom, Vodafone, etc. all expressed their full support and prompted 3GPP to formulate detailed plans in a short period of time in order to complete the standardization of uplink and downlink decoupling protocols as soon as possible. In addition to the leading and practicality of the above-mentioned technological innovations, although pre-commercial is the necessary stage for the subsequent commercialization of 5G, how to ensure the technical standards adopted in the pre-commercial phase and the final standard under the premise that the globally unified 5G standard has become the consensus of the industry The 5G standard is consistent, which is a problem that must be considered in the pre-commercial process. To this end, in the 5G pre-commercial network deployed by Huawei in cooperation with operators, the core indicators of standards and protocols are basically consistent with the released versions of 3GPP. For example, in the frame structure, the same frames as 3GPP are basically adopted. Structure; in terms of standards not defined by 3GPP, Huawei will design according to the unified view among multiple vendors and partners. Therefore, the compliance between the pre-commercial system and the future 3GPP final standard for commercial use will be very high, and once the standard is frozen, the device will be directly upgraded to the 3GPP standard. In this regard, Yang Chaobin, president of Huawei's 5G product line, pointed out that Huawei will launch a full set of 5G network equipment commercial systems in 2018, which means that customers are committed as long as they need Huawei to provide, and this equipment should support future-oriented smoothing. Evolution, confident that after the official launch of the 5G international standard, it is still applicable and compatible with the new standard. Based on the discretion of technology innovation in the formulation of standards and forward-looking strategies (compatible with actual standards and protection of current operational investments), Huawei has received strong support from many partners in the industry in the current 5G pre-commercial system. Leading position. For example, in September this year, Huawei and Deutsche Telekom built the first 5G pre-commercial network in Europe in the center of Berlin, and verified the 5G end-to-end solution in the commercial network environment. The ultra-high rate and extremely low latency support of the 5G network. The ultimate business experience is visualized. In South Korea, Huawei and South Korean operator LG U+ successfully completed the world's first pre-commercial verification of IPTV over 5G using the world's first 12GHz band 5G millimeter wave CPE based on chipset architecture, which is the world's first high and low frequency end-to-end Pre-commercial 5G network. In Japan, Huawei and Japan NTT DOCOMO jointly demonstrated Japan's first 5G millimeter wave CPE business, successfully implemented holographic video calls; and jointly completed the world's first C-band based 5G high reliability, ultra low latency field test in Tokyo Built the world's first 5G low latency test network. Referring to the 5G standard, it should be noted that the first version of 3GPP 5G R15 will be completed in June 2018, focusing on the eMBB scenario; the second version R16 will be completed in December 2019, meeting the ITU-defined eMBB , uRLLC and mMTC all scenarios. In view of Huawei's above-mentioned strength in technological innovation and open participation in the formulation of standards, in the formulation of the future 5G standards, there is no doubt that it has the strength to be underestimated. In summary, we see that the Huawei 5G pre-commercial system won the World Internet Conference leading scientific and technological achievements award reflects the fact that in the 5G era, Chinese companies represented by Huawei are using technological innovation and forward-looking. The standard strategy of cooperation and win-win is to promote and accelerate the 5G commercialization process while continuously improving its influence and status in the industry. 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