According to forecasts, mobile users will continue to grow rapidly: the number of global users at the end of 2015 was 2.6 billion, and this figure will reach 5.8 billion by 2020; the penetration rate of mobile broadband connections will increase from 47% in 2015 to 71% in 2020 ; User growth and multiple services have brought about explosive growth of data. It is predicted that data traffic will increase at a rate of 49% per year, and by 2020, data traffic will increase at least 7 times. In the case of explosive growth in data volume, macro stations only carry less than 30% of the data volume. In other words, the indoor digital system is the main carrier of the data volume, so improving the quality and capacity of indoor coverage will be the focus of network development and deployment.
With the advent of 5G technology and the popularization of concepts, artificial intelligence, Internet of Things, and big data analysis have all become the direction of technological evolution. As a result, the demand for indoor services has developed in a diversified direction: demand for value-added services such as indoor navigation, smart parking, and smart office has begun to emerge, and indoor networks will become the best entry point for operators to add value to their network pipelines. At present, the focus of the new indoor distribution system is that in addition to system capacity and coverage improvement, there is an urgent need to create a new business model, form an end-to-end commercial application, and realize the value-added service of operators:
• With the rapid development of 4G and the multiple services of 5G, operators are no longer satisfied with only providing pipeline services, but hope to conduct smarter business development and management.
• In view of the indoor characteristics, pay more attention to the simplicity and accuracy of operation and maintenance, so as to reduce operation and maintenance costs and achieve refined management.
•For high-value areas such as large supermarkets, high-end business districts, railway stations, airports, operators can unite physical merchants to conduct precision marketing, online payment, mobile advertising, etc., combined with precise business positioning, to innovate business models and business models .
The new indoor distribution solution ZTE QCell + ZXMEC indoor distribution and positioning system, supports multi-standard, multi-carrier signal feed, and supports multi-band signal access of all indoor sub-bands of operators; the equipment is small in size and convenient for rapid installation and deployment, but the capacity is small. It is N times the traditional DAS system; Multi-access edge computing (MEC) uses sinking content and applications to mine edge network service processing capabilities, reducing latency and improving experience; based on the field strength fingerprint library algorithm, it achieves high Accurate indoor positioning, coupled with a big data analysis system, can well support the multi-dimensional upgrade needs of operators and commercial complexes in business innovation and operation innovation.
The QCell+MEC indoor distribution and positioning system solution provided by ZTE. The main network elements include remote radio unit PicoRRU, remote convergence unit P-Bridge, multi-standard access unit MAU, baseband unit BBU, and multi-access edge computing server , With the big data analysis system, it can well meet the characteristics of indoor distributed applications in the core dense business districts and all the needs of operators and commercial complexes in business innovation and operation innovation.
Figure 1 MEC+QCell indoor distribution and positioning system architecture diagram
1. The traditional solution of end-to-end indoor digital architecture The DAS system has many constraints, especially the use of many analog components, which restricts the further development of indoor digital systems. ZTE’s QCell Plus solution adopts an end-to-end digital architecture and perfectly supports 4G communication technology. Therefore, it has outstanding advantages over DAS in the following aspects:
•capacity
• Macro and micro network coordination capabilities
•QoE improvement
• The introduction of edge computing further meets the requirements of high-speed, low-latency services
• Evolution
ZTE QCell supports TDD-LTE/FDD-LTE/GSM/WCDMA signal feed at the same time, and a single system can support all frequency bands of operators such as 900M, 1800M, E-band, D-band, etc., to meet the concurrent needs of high-capacity and multi-wireless services. ; In addition, QCell room equipment can be selected on demand, with beautiful appearance, strong concealment, compact size, convenient installation, POE (Power Over Ethernet) power supply, rapid deployment, large system capacity, multiple cells in a single system, and the capacity can reach DAS N times the system.
2. MEC enhances digital business capabilities, multi-access edge computing, through sinking content and applications, mining edge network business processing capabilities, reducing delay and improving experience, based on field strength fingerprint library algorithm, achieving high-precision indoor positioning, and cooperating with big data analysis system , Which can well support the multi-dimensional upgrade needs of operators and commercial complexes in business innovation and operation innovation.
After the MEC positioning innovation solution achieves fast and flexible deep coverage of indoor 4G signals through QCell, based on ZTE’s open MEC platform, it provides localized, low-latency and high-bandwidth services close to users, while providing open API interfaces, allowing Abundant third-party applications and content access channels to meet the diversified business needs of indoor users and realize the value-added of operators' network channels.
• Provide information technology service environment and cloud computing capabilities in locations close to mobile users;
• Push content distribution to the side close to the user (such as a base station);
• Applications, services and content are deployed in a highly distributed environment;
• Better support the business requirements of low latency and high bandwidth in 5G networks.
The multi-access edge computing server ZXMEC provides information technology service environment and cloud computing capabilities at a location close to mobile users, and pushes content distribution to the side close to users. Applications, services and content are deployed in a highly distributed environment, which can be better Groundly supports the business requirements of low latency and high bandwidth in 5G networks.
The QCell + ZXMEC system combination solution breaks through the problem that GPS and DAS indoor distribution systems cannot support indoor positioning well. Based on the field strength fingerprint library algorithm, it achieves high-precision indoor positioning and adds value to the operator's business.
3. Fully digital operation and maintenance
After the introduction of the QCell solution into MEC, in addition to the improvement of business diversification and rapid deployment capabilities, it also further brings the capabilities of in-depth network analysis and in-depth optimization. Mainly manifested in two aspects. First, the accurate positioning of network problems; second, the ability to predict, comprehensively analyze, and solve collaboratively in advance, which is unmatched by DAS.
According to the needs of operators and different stages of the network, QCell can realize dynamic capacity allocation through flexible configuration of the network management, support to activate the QCell indoor positioning function in various scenarios such as super cell networking, cell splitting, and cell merging, and support multiple Pico RRU radios The indoor positioning function is enabled in the scenario of merger, PB (P-Bridge) cascade and CP (Cell PorTIon) merge.
4. MEC+QCell successful case ZTE Corporation first opened the QCell+ZXMEC indoor distribution coverage deployment and indoor accurate positioning application deployment verification of the Hualian Center in Changping, Beijing, which has a huge passenger flow, and achieved a positioning accuracy of 5m under the premise of comprehensive coverage of the indoor space. By connecting to a third-party big data platform, the potential of customers can be tapped through user experience enhancement, member precision marketing, and stimulating customer consumption. It can also use big data to accurately analyze user portraits + user action trajectory analysis to support the timely adjustment of business operation strategies and help businesses attract customer flow. In addition, through store-level heat analysis, it helps merchants to lock high-value brands, and comprehensively analyzes the correlation and conversion rate between brands to help merchants increase their overall value.
ZTE's UDN ultra-dense networking + MEC deployment and application verification in Hunan University Town, Changsha, under high user density and high-capacity demand scenarios, the high-frequency video resources are cached on the MEC server to improve user download and on-demand experience. On the premise of reducing the network pipeline load, the operators have achieved a win-win situation of improving the business experience of the college student customer base and increasing the flow and revenue of the operators.
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