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Full coverage of communication towers for at least 5 years

作者:广信通信 发表时间:2019-01-17 17:57:46 Article Source: Communications tower Author: Guangxin Communications Published: 2019-01-17 17:57:46
The judging boundary of the communication tower is actually very vague. "4G +" and "fake communication tower" are just a name, they are all reasonable products of technology in the evolution process.
The large-scale commercial use of communication towers in the standard sense does not happen overnight. The coverage speed of communication towers will be much slower than 3G and 4G, and full coverage may take 5 to 10 years.
Not long ago, telecommunications giant AT & T announced the official commercial communications tower mobile service in 12 cities in the United States. However, users soon discovered that the communication tower logo they saw on their mobile phones was actually "communication tower E", and "E" was specifically reduced and blurred.
In addition to the sign giving a "copycat" feel, the speed of "Communication Tower E" is a big slot. Some netizens commented on the forum of the social networking site Reddit that the downlink transmission speed of "Communication Tower E" is 194.88Mbps, and the upload speed is even lower, only 17.08Mbps. Another related investigation shows that in the cities where the American Telephone and Telegraph Corporation claims to lay out communication towers, the network speed has not increased significantly and is still comparable to 4G speed. As a result, many netizens complained that the American Telephone and Telegraph Company lacked sincerity in this wave of operations and created a "fake communication tower".
What is the truth of the "Communication Tower E" that makes people happy? Since the speed has not kept up, why should AT & T swell its face and become fat? Is it possible for domestic users to encounter "fake communication towers"?

"Fake communication tower" adopts non-independent networking deployment method

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"'Communication Tower E' is an abbreviation of 'Communication Tower Evolution', and it is a bit off to say that it is a deployment method that is indeed one of the communication tower deployment methods." Feixiangwang CEO Xiang Li I just told the reporter of Science and Technology Daily that the communication tower currently has two independent deployment modes: non-independent organization network (NSA) and independent network (SA).
The SA adopts an end-to-end communication tower network architecture, and from the terminal, the wireless new air interface to the core network, the communication tower related standards are adopted. NSA refers to the way that LTE (Long Term Evolution, long-term evolution) and communication towers are jointly networked based on the dual connection technology. It is also called tight-interworking between LTE and communication towers. When the LTE system adopts the dual connection method, data is divided at the core network or the Packet Data Convergence Protocol (PDCP) layer, and the user data stream is transmitted to the users through multiple base stations simultaneously.
"Communication Tower E" actually uses the NSA deployment method. The specific method is to add some base stations to the 4G core network, which is actually an upgraded version of the 4G network.
Guo Zhengbiao, the president of Nanjing Shiyu Tianji Communication Technology Co., Ltd. also believes that "'communication tower E' is not a fake communication tower". "It is an NSA deployment method. It does some technical upgrades on the original 4G framework to improve network bandwidth, but there is no physical replacement. In fact, we can understand it as 4G +, that is, 4G to the communication tower. Transition stage. "Guo Zhengbiao said.
Although the 4G basic equipment is used, the NSA can also have the characteristics of "high speed, low delay, and large connection" of the communication tower, so the industry defaults it to be a communication tower. "Although the speed of 4G + is not as fast as the speed of a communication tower in the standard sense, it is still improved compared to 4G, but the user ’s expectations for the communication tower are too high, so that they are not satisfied with the performance of the 'communication tower E'. Guo Zhengbiao explained. Unlike NSA, SA uses a true communication tower network. "That is to make the core network, billing system, management system and organizational system completely new, which is completely different from 4G." Xiang Ligang said.
Although they are all deployment methods of communication towers, compared to SA, NSA has limited application scenarios. "We know that 3GPP, the global communications tower standard development organization, defines three major scenarios for communications towers: eMBB (Mobile Broadband Enhancement), mMTC (Massive Machine Class Communication), and uRLLC (Ultra-reliable, Low-latency Communication). The use of the two scenarios is not perfect. "Xiang Ligang said, but it cannot be denied that the" communication tower E "based on the NSA circuit diagram is a communication tower.
So how does AT & T upgrade its network services to communications towers without users changing their phones?
Xiang Ligang said: "Using a wireless CPE (a wireless terminal access device that receives Wi-Fi signals) to convert the tower signal into a high-speed Wi-Fi signal, users can enjoy the tower network with 4G terminals. Actual This is a fixed network service, which is equivalent to replacing the fiber optic home with a wireless network. "
通讯塔 Article Tags: Communication Tower