本帖最后由 SeanTina 于 2015-9-23 10:51 编辑
Mikko Terho is currently working in Huawei Technologies Oy in Finland as R&D Site Manger for Finnish R&D and as CTO for Terminal OS in Huawei Technologies, Central Software Institute in China. Finland R&D works on Mobile Software, Consumer Product Security and 5G Technologies.
European 5G Terminal Design Center is in Finland.
Huawei R&D center in Finland is established 2012 and we report to Sweden R&D and corresponding business teams in HQ. Design Center in Helsinki Finland is focused in technologies related to Terminals and we have good position as the only team in Europe focusing on 5G terminal development. My team is on coffee table discussing our unified vision for 5G terminal and Huawei R&D in Finland.
5G terminals to be used by consumers and industries
5G development is a journey in innovation and learning where one thing is clear: we build products and do the research necessary to derive benefits to our customer and consumers. However, the current consumer is still distant from the 5G engineering and research effort taking place at this point of time. Engineer knows the agreed design goals of 5G and the current vertical buzzwords, like Internet-of Things (IoT), Intelligent Grid, Smart City and Smart Traffic. Use cases for standardization follow the needs of industry verticals defined by above mentioned “buzzwords” and parameters picked up from traditional telecommunication standards such as latency, capacity, transmission speed, mobility support, reliability and density of links.
5G technical goals
The latency target in RAN is 1ms, which is a ten-fold improvement over current LTE RAN access time. The commercial value of this target is improved real time communication and the possibility to open new industry segments for wireless communication, such as industrial and electrical control networks. The latency requirements in control networks are below the current latency and performance of current wireless standards. Achieving low latency opens up new vertical markets in smart grid and real-time control. For a consumer the short latency means much better gaming experience and also the introduction of new services like augmented reality and real-time telepresence.
High transmission speed with peak rate of 100/10 Gbit/s (indoor/outdoor) for consumer terminals is higher than current peak rate in most fixed corporate networks using Ethernet technologies. High peak rates are important to reach low latency in a high-capacity multiuser system that also needs to support, for example, several 3D 8K video streams. In 5G, even the most demanding virtual reality, augmented reality, gaming and real time videoconferencing solutions are working with photorealistic image quality.
Mobility support of 5G is targeted to work at speeds of 500km/h, so we can say that finally 5G works everywhere in bullet trains, fast moving vehicles and urban cities outdoor and indoor. New 5G-quality vehicular & outdoor services in cities need a lot of capacity. Our team has estimated that we have to achieve the point traffic density of the network urban underlay of 1Tbit/km2.
From left to right Kari Leppänen, Linda Wangfei, Mikko Terho, Pauli Seppinen and Janne Mäntylä
Innovations to achieve 5G goals
Two significant findings came out from this discussion. Firstly, we have to move radio management functions away from the terminal device (UE). In original GSM, the current LTE set-up and in the WLAN, the UE is measuring the signal strengths of base station pilot transmissions. These measurement results are periodically transmitted to the network and radio resource and mobility management is based on UE measurements. Similarly, there are many other “keep-alive” functions in other levels of the UE software. A better, more power-efficient approach for UE is to move all this type of functionality away from the consumer device in order to lower stand-by power consumption. So the principle we are now following in our development work is that the UE sends the pilot - we call them beacons - and the network measures. This is suitable for dense 5G networks, not necessarily so for a macro-cellular deployment. Apparently multiple base stations hear the beacon signal from the UE, allowing channel estimation to be performed. Next the network computes the transmission signal directed for the UE and sends the IP-packets using MIMO techniques. The same beacons from the mobile device allow the network to calculate the user position and predict it. This allows the mobility management to be proactive, not reactive as in current GSM and LTE-networks. This is a key for good 5G mobility performance.
The predictive mobility management scheme allows also very accurate positioning of the user devices at very small power consumption in the device. The latency and peak rates already lead to a design where the handset location needs to be known in a few meters radius, if 5G communication trough-put and latency are to be met. Our research indicates that we could have a positioning system with ten centimeter accuracy indoors and meter range outdoors, if such capability is required for the consumers and IoT. It is possible to develop 5G as ubiquitous LBS solution, both indoor and outdoor, without additional investment. This opens new business opportunities for all parties investing in 5G networks and our studies show that quality is LBS service is better than the current solutions provided by the OTT operators.
Finland is an excellent place for 5G terminal research
By following the goals set for the 5G standard work and applying our above mentioned principles we are very excited on our road ahead. We have multidiscipline R&D team in Finland and the local ecosystem is supporting us nicely. In Finland the universities Aalto in Espoo, University of Oulu and Tampere University of Technology have a long history supporting mobile communication research and basic studies on many areas related to mobile terminal development. Scandinavian telecommunication manufactures and operators have a long tradition in co-operating with universities. In Finland we have multiple small teams that cover various technologies for the terminal. This is beneficial for our 5G terminal research. The active participation into the 5G RAN research and standardization benefits 5G terminal developments.
I can say that, we are the only team in Europe, with the capability to work locally on end-to-end solutions for 5G consumer products. Thanks to Huawei R&D investments in Europe we believe that this work will be in the hands of the consumer early next decade.
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