D2D communication: meeting the demands of today and tomorrow

Recently our work was highlighted by Ericsson Research. Link to original page.

D2D communication pushes the boundaries of future telecom systems

It’s no secret that today’s networks are carrying exponentially more traffic as demand from new devices and their applications increase. The rising traffic being generated by smart devices and mobile broadband services is on course to becoming too much for network resources such as spectrum to handle.

A new research initiative is underway to address this. The joint project sees Ericsson Research, Wireless@KTH and the Automatic Control Lab of the Royal Institute of Technology (KTH) in Stockholm collaborating not only to investigate how to better support D2D communication but also the opportunities it presents in 5G networks.

This discussion follows on from one of our consistently most-read blog posts, D2D Communications – What Part Will It Play in 5G?

The power of advanced smart mobile devices

The traditional user-in-the-loop model (UIL) views users as mere receivers of services. Schoenen et.al. wrote about this in the IEEE Communications magazine in February, 2014 (“User-in-the-Loop: Spatial and Temporal Demand Shaping for Sustainable Wireless Networks”). The idea of the UIL builds on the observation that a majority of human users show willingness to shape their service demands in space/time if they recognize the benefits associated with such behavior. For example, a behavioral survey reported that more than 50 percent of mobile users are willing to move around 40 meters in indoor or outdoor environments provided they receive some level of discount on regular charges.

Our Beyond User in the Loop: User in the Service (BUSE) model extends this to actually include users – especially of advanced smart mobile devices – as integral elements of the wireless system. While largely responsible for the increase in traffic loads, advanced smart mobile devices, with their increased capabilities in processing-power, memory, multiple wireless interfaces and radios may simultaneously now also be enlisted to reinforce the network to handle this extra demand. Once entwined in the infrastructure, they can be engaged in varied network-related activities such as wireless broadband provisioning, video content distribution, device-based relaying, and social proximity services, to name but a few. We are treating the evolving network infrastructure, available spectrum, and user devices, as one large diverse cooperating ecosystem and seeks to identify the win-win opportunities therein.

Future cooperation between users and network operators

We are also exploring future cooperation between users and network operators on the spectrum level, for example within carrier frequencies such as the Innovation Band, higher frequency millimeter-wave bands, and potentially even on today’s expensive licensed cellular frequencies. By way of example, an advanced cellular device (such as a smartphone) may easily serve as a semi-static relay node or wireless router in a home or small office environment towards a 5G cellular system, thereby segregating local in-home traffic from spilling out unnecessarily into the larger cellular network.

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Exploiting knowledge of device positions enables new ways of communicating and delivering services to users. In the BUSE scenario, new ideas involving this proximal communications, such as network-assisted multi hop relaying, multi-antennae communications and D2D links utilizing full duplex transceivers are envisioned. To this end, BUSE leverages earlier research collaboration activities: Basic elements necessary for BUSE’s vision, like network-assisted D2D communications, were originally explored in the European research project METIS and its follow-up METIS II. We can point for example to the IEEEAccess articles “An Overview of D2D Communications Technology Components in METIS”, and “Device-to-Device Communications for National Security and Public Safety”, and the recently published book 5G Mobile and Wireless Communications Technology. These elements are now being standardized in the industrial partnership forum 3GPP, leading the way towards proximal-based connectivity in upcoming 5G systems.

Meeting the demands of today and tomorrow

The BUSE project is a good example of how Ericsson Research is at the technological forefront of network design. We regularly work closely with partners, often comprising of members from academia, in innovative joint research activities like this one. In our role as a key partner in the BUSE project, we share the vision of evolving wireless infrastructure and user devices as a collaborative and socially aware cooperating ecosystem. Indeed, the role of social awareness in creating win-win situations among the mobile ecosystem stakeholders has been explored in a parallel cooperation with Tampere University of Technology and the University Mediterranea of Reggio Calabria. Results are described for instance in the IEEE Wireless Communications article “Towards Trusted, Social-Aware D2D Connectivity: Bridging Across Technology and Sociality Realms” by A. Ometov et.al. This is ultimately how we push the boundaries of telecom systems to meet the demands of today and tomorrow.

by Gabor Fodor, Mårten Ericson, Yngve Selén, Mikael Prytz, Vicknesan Ayadurai
Ericsson Research.

Link to original page.

LTE-Assisted WiFi-Direct: A unique trial of network-assisted D2D technology

As the dust around 5G communications technology settles, it becomes clear that it will be a synergistic integration of diverse techniques and solutions, rather than one killer technology, with the goal to dramatically improve the performance of next-generation wireless networks. In this space, network-assisted device-to-device (D2D) infrastructure is seriously considered now as part of future 5G ecosystem, due to its capability to offload expensive cellular bands, as well as owing to next-generation applications and services that it enables, thus leading to new market opportunities. In particular, LTE-assisted WiFi-Direct is a promising technology that creates unprecedented benefits, for both operator and end user, at the stages of device/service discovery, connection establishment, and service continuity. Correspondingly, cellular network may automate pairing of proximate devices, maintain their security, and improve the battery lifetime of D2D peers sharing their desired content. Continue reading

LTE-Assisted WiFi-Direct: Brno presentation - Part1

LTE-assisted WiFi-Direct is a promising technology that creates unprecedented benefits, for both operator and end user, at the stages of device/service discovery, connection establishment, and service continuity. Correspondingly, cellular network may automate pairing of proximate devices, maintain their security, and improve the battery lifetime of D2D peers sharing their desired content.

We have completed a full-scale practical trial of network-assisted WiFi-Direct on a live 3GPP LTE deployment in Brno, Czech Republic. This unique trial unites partners from Tampere U. of Technology, Brno U. of Technology, and Intel Labs US. This post presents the final presentation about this trail. Main post could be found via this link. Continue reading

The potential of 5G to enrich our lives - Interview with 5G expert Sergey Andreev

Recently our coordinator Sergey Andreev was interviewed by Eurescom. Link to original page.

The potential of 5G to enrich our lives

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The hype around 5G is not yet matched by clarity on what 5G actually is and how we get there. In order to shed more light on the topic and get a better understanding of the challenges and opportunities of 5G for Europe, Eurescom message editor-in-chief Milon ­Gupta interviewed 5G expert Dr. Sergey Andreev, who is Senior Research Scientist at Tampere University of Technology. Continue reading