Just like the evolution process of mobile phones from feature phones to smart phones, as the functions of mobile phones are getting more and more powerful, but the battery technology has not been a breakthrough revolution, various smart phone manufacturers have turned their attention to the innovation of charging technology. . Because no matter how powerful the function and how advanced the hardware is, a smart phone without the support of electrical energy is just a "brick", and the same is true for 5G base stations. As we all know, 5G has three major atomic capabilities, namely eMBB: enhancement MobileBroadband, enhanced mobile broadband; uRLLC: ultraReliable & Low Latency Communication, ultra-high reliability and ultra-low latency communication; mMTC: Massive Machine Type Communication, massive machine type communication to cope with Three application scenarios build a fully connected world where everything is connected. But 5G is so good, it also follows a law of unity of opposites, "no one is perfect", 5G also has a headache shortcomings. First, the problem of expensive cost. It is well-known that operators have huge pressure on the cost of building 5G networks. Simple calculations. According to the previous collection of China Mobile, the price of a single-seat 5G base station was about 160,000 yuan. According to calculations, 5G needs about 10 million base stations to achieve the same coverage effect as 4G, so the total purchase investment of 5G base stations will reach 1.6 trillion, which is an astronomical figure. However, this is only the cost of telecommunications operators to purchase equipment, and does not include electricity, maintenance, labor, and site fees after the network is built. Therefore, reducing the cost of network deployment through a variety of innovative methods has become a task for major operators to sharpen their heads. For example, in the power supply and service transmission of base stations, the traditional solution is for operators to introduce external city power through composite optical cables. The base station optical cable collection projects announced every year are usually tens of millions of core kilometers. How can this money be effectively saved? Secondly, the problem of network deployment efficiency. Regardless of the cost of fiber optic cable procurement and human maintenance, in the process of base station construction, the progress of base station opening is often affected due to the introduction of external electricity or the long transformation period. For example, it is well known that one of the biggest selling points of 5G is its flexible deployment capabilities.It can connect to any IoT device anytime and anywhere through large bandwidth, low latency, and massive links. However, 5G base stations themselves are difficult to achieve flexible deployment anytime and anywhere, because Mobile communication base stations are not only base station equipment, but complete structural components including computer rooms, wires, tower masts, etc., of which power supply equipment is very important, and how to save money in scenarios such as disaster relief, large-scale evening parties, and sports events What about the "last cable"? Therefore, exploring the speed and flexibility of network deployment in different environments is also an important issue that operators need to solve urgently.

The application of laser wireless power supply technology to 5G base stations is still in the research and development stage, and there is still a certain way to go before landing. However, from the perspective of communication in a broad sense, the expansion of "power from the air" from smart phones to 5G base stations is an important step in the process of power transmission, which will be of great significance for both ordinary users and communication operators. Remember the air charging technology released by Xiaomi at the beginning of this year? Compared with the current mainstream contact wireless charging on the market, this technology truly enables smart phones to "take electricity" wirelessly. In recent days, this "black technology" application has been further expanded-realized in 5G base station power supply, taking a milestone step in the history of 5G base station construction. On October 4th, Ericsson announced the cooperation with the laser innovation company PowerLight Technologies to achieve a proof-of-concept in Seattle and successfully demonstrated the world's first safe 5G base station with a completely wireless power supply method. The power supply method in the solution uses optical beams. -A laser-based technology that converts electricity into high-intensity light, which is then captured by a wireless base station and converted into electrical energy for remote power supply.

Three days after the start of the electricity price reform, Shandong, Jiangsu and other places have organized their first transactions after deepening the market-oriented reform of coal power on-grid electricity prices, and the average transaction price has "topped up" compared to the benchmark electricity price. Experts believe that the reform of electricity prices expands the range of market transaction electricity prices, which is conducive to balancing the conflicts and interests of all parties in the electricity market at this stage, and alleviating the shortage of electricity supply. "Securities Daily" reporters, according to incomplete statistics from the official accounts of power trading centers in various regions, noted that three days after the start of the electricity price reform, Shandong, Jiangsu and other places have organized and carried out their first transactions after deepening the reform of coal power on-grid tariffs. The price is higher than the benchmark electricity price (the maximum price that does not exceed 20% of the maximum price). Experts interviewed by a reporter from the Securities Daily believe that the electricity price reform has expanded the range of market transaction electricity prices, which is conducive to balancing the conflicts and interests of all parties in the electricity market at this stage, and alleviating the shortage of electricity supply. Experts also said that on the first day of the electricity price reform, the transaction price of Jiangsu and Shandong provinces rose by nearly 20%, reaching the highest floating electricity price. There are two main reasons: First, Jiangsu and Shandong provinces have the highest thermal power generation in my country except the Inner Mongolia Autonomous Region. Provinces, apart from Guangdong and Zhejiang provinces, have the largest power gaps, and they are also under greater pressure to reduce emissions. When the Inner Mongolia Autonomous Region does not lack power but also sends power out, the four provinces of Jiangsu, Shandong, Guangdong, and Zhejiang have the largest demand for outsourced power. The second is the "top rise" transaction where the electricity price is close to 20%, indicating that the electricity market in the provinces where the electricity is purchased is strong and the local economic development momentum is strong. In fact, from August to September, some regions have introduced electricity price reform plans. For example, Guizhou, Guangdong and other provinces have successively issued notices to implement the time-of-use electricity price policy. On the basis of the flat-segment electricity price, a certain percentage is raised and lowered to form peak electricity prices and low electricity prices, thereby guiding power users to cut peaks and fill valleys and ensure the safety of the power system run. In addition, the Zhejiang Provincial Development and Reform Commission will adjust the time-of-use electricity price policy to include large industrial electricity price users (not including the country's special regulations for electrified railway traction electricity, etc.), general industrial and commercial, residential, agricultural production and other electricity price users. No adjustment; general industrial and commercial electricity price users will implement the time-of-use electricity price from 2024, and the specific price and peak and valley periods will be determined separately.