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5G Enhanced Mobile Broadband Access Networks in Crowded Environments

Periodic Reporting for period 1 - 5G-Enhance (5G Enhanced Mobile Broadband Access Networks in Crowded Environments)

Reporting period: 2018-07-01 to 2019-06-30

In recent years there have been noticeable research initiatives on the fifth Generation Mobile Communications System (5G), in Europe, Japan, and around the Globe. As a result, the first network prototypes are being deployed and tested in dedicated testbeds in major countries around the globe. Now, a comprehensive large scale demonstration is required to determine the feasibility of novel and desirable wireless services with the early prototype devices and network technologies. In the 5G era, there will be a wide range of wireless services based on eMBB in crowded environments. This can be achieved by a novel concept, namely, micro operator (uO) due to the fact that a uO has the flexibility and scalability requirements for dense area network implementations by allowing different stakeholders to take the role of a 5G operator. In the uO domain, spectrum resource management is challenging since the spectrum may be shared with a macro operator, which in some cases may have a higher priority to use the spectrum, or with between a potentially large number of other local uO operators. In conclusion, there are mainly two issues that must be carefully addressed to properly implement the uO concept. First, the development of flexible and scalable network design and implementation; Second, the development of enhanced spectrum resource management. A key objective for the 5G-Enhance Project is to define and evaluate interoperable 5G eMBB and efficient network solutions in dense area.
The top level of objectives for the 5G-Enhance Project is to define and evaluate interoperable 5G eMBB and efficient network solutions in dense area. Sub-objectives are defined as follows:

• Objective 1: Develop, plan and execute large scale trial activities on actual testbeds between EU and Japan.
Outcomes at Y1: Use cases, test platform overview, and target KPIs of two trials (indoor and outdoor trials) have been defined as the deliverable D2.1 Use cases (M6).

• Objective 2: Clarify the design and specification required for the demonstration and trials based on two wireless applications with the 5G network.
Outcomes at Y1: Technical requirements and specification, test network architecture, used technologies have been defined as the deliverable D2.2 Technical requirements (M12).

• Objective 3: Development of 5G enhanced mobile broadband technologies in dense area for achieving the requirements (5G KPI) of the two applications.
Outcomes at Y1: 5G-Enhance technologies including smart spectrum, multi-connectivity and flexible TDD have been investigated at Y1. Two deliverables (D3.1 Report on requirements and architecture (M4) and D4.1 Report on requirements of ASNRM architecture (M4)) describes the state of the art and defines system models of the 5G-Enhance technologies.

• Objective 4: Establish long-term research collaboration between leading industry players, top research institutes and universities in Europe and Japan.
Outcomes at Y1: As collaboration activities between EU partners and Japanese partners, two workshops at WCNC2019 and VTC fall 2019 have been organised and one joint industrial forum among EU-JP projects (5G-Enhance, 5G-Miedge and 5G-pagoda) will be organised at Globecom2019. In addition, a joint paper has been published and being prepared.
Progress beyond the state of the art
5G-Enhance project partners carried out the research and trial works as planned. In order to achieve the project objectives, the project resources are used and the outcomes and deliverables are produced. In addition, collaboration between partners as well as EU-JP projects are on-going. The research topics of 5G-Enhance covers general eMBB techniques, flexible TDD, multi-connectivity, spectrum sharing techniques, network sharing techniques and interoperability study between EU and Japan. In this topics, the project partners published in international journals, conferences and also make multiple standard contributions. The publication is summarised in the project website (https://www.vtt.fi/sites/5g-enhance/publications).


Expected impact
1. Academy aspect
5G-Enhance aims to publish the project outcomes in international journal and conference as well as disseminate 5G-Enhance indoor and outdoor trial scenarios, use cases and results via the participation to international exhibitions/workshops/conferences. In Y1, 5G-Enhance members published multiple journal and conferences papers in international journal and conferences. Key publications have been summarised in chapter 2 of deliverable 1.1. In addition, 5G-Enhance partners has organised two international workshops at WCNC2019 and VTC fall 2019.

2. Industry aspect
Two members (FHG and Accelleran) of 5G-Enhance attend MWC2019 and exhibits 5G small cell base station and technical results.
One member (NICT) of 5G-Enhance actively works on 3GPP standard make a contributions together with 5G vendors and operators (NEC, AT&T, KDDI, Verizon, SK Telecom, Telecom Italia, Siemens, NTT Docomo, Nokia, Intel, Ericsson and so on.) The 3GPP standard contributions are summarized in chapter 2 of delierable 1.1.