Nanjing is the only 5G pilot city in Jiangsu Province. Recently, Jiangsu Unicom took the opportunity to optimize the large-scale network testing of Nanjing's 5G trial network, and took the lead in simultaneously completing the wireless fixed broadband-WTTx (Wireless To The x) service based on 5G network. The performance test verified that using Huawei's commercial CPE terminal, the peak rate of a single user reached 1.8Gbps, which can meet the needs of 60 users for simultaneous 4K high-definition video on demand, and nearly 40 users for each user to access the Internet at the same time at 50Mbps. WTTx users have obvious advantages over traditional fixed broadband when they experience basic web browsing, IPTV HD live broadcast, WeChat, online games and other regular business experiences. In the case of three walls, indoor coverage can meet high-speed downloads, 1080P high-definition video without Caton.
The promise of ubiquitous WTTx fixed wireless access thrives with every new generation of wireless or mobile technology, and 5G is no exception. Compared to 4G, 5G has the potential to enable cost-effective fixed broadband solutions at scale as it offers 10 to 100 times the capacity of 4G. The 5G R15 standard was officially frozen in June 2018. The R15 standard is mainly for eMBB scenarios. The industry expects that eMBB services based on large bandwidth will become the first wave of 5G applications, while 5G wireless fixed broadband WTTx applications for small and medium-sized enterprises and residential buildings will be Become the first commercial launch of 5G network. Jiangsu Unicom is the first to test, relying on the Nanjing 5G trial network to build the country's first 5G fixed broadband service demonstration area, so that the new generation of communication technology can meet people's increasing demand for information services.
As WTTx adopts wireless access, it can realize more precise and agile network deployment, and realize rapid service provisioning. At the same time, compared with FTTH construction, WTTx provides various advantages, including significantly lower deployment costs, faster service rollout and lower operating costs. This is because most of the cost and most of the complexity involved in fixed access deployments is related to the last mile: the part of the network that reaches the customer premises. In many cases, 3G, 4G or 5G-based WTTx may be the only viable broadband access option, especially in rural areas and emerging markets with limited fixed infrastructure. 5G opens up higher capacity solutions in the lower frequency bands - eg 3.5GHz - in the field of 3GPP wireless access as a residential broadband technology.
Schematic diagram of 5G WTTx network
With the development of 5G technology, the commercial time of wireless home broadband service is ripe. According to Ovum's forecast, wireless networks will provide broadband access services to 350 million households worldwide in 2020. Compared with 4G, 5G has new technologies such as wide spectrum, Massive MIMO, and full duplex, which greatly increase the single-user download rate and cell throughput rate: the single-user peak rate reaches 3Gbps, and the peak cell throughput rate exceeds 10Gbps; at the same time, the 5G network also has Latency as low as 1ms and millions of connections per square kilometer are two advantages. The advantages of the 5G network will promote the wider application of WTTx services in China.
The initial 5G WTTx service is mainly for users of online travel, panoramic video, online shopping, single-player/multi-player online games, smart wearable AR and other users. Taking the panoramic video service as an example, 8K (3D), 24bits/pixel, 120fps, ordinary compressed video The transmission requires about 960Mbps, and the delay requirement is 20~100ms; while the 4K VR transmission rate requirement is 60Mbps, and the one-way end-to-end delay requirement is 5-10ms. The 5G network will ensure a better perception experience for these services. In the 5G era, unlimited traffic and ultra-low latency will enhance the advantages of wireless networks. For example, a high-definition movie can be downloaded within 1 to 2 seconds, truly creating the ultimate user experience.
The 5G WTTX network performance verification is only the first step for Jiangsu Unicom to build a 5G wireless home broadband service demonstration. A few days ago, it has simultaneously carried out research on the characteristics of 5G WTTx services. Based on business characteristics, build end-to-end capabilities from target area planning, network evaluation and construction, business listing, operation and maintenance, and use business demonstrations to drive 5G application innovation and expand the 5G industry.
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