Mischa Dohler

Mischa Dohler
King's College London | KCL · Department of Informatics

About

381
Publications
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17,430
Citations

Publications

Publications (381)
Article
Full-text available
The future of networking will be driven by the current emerging trends of combining the physical and virtual realities in cyberspace. Considering the ambient pandemic challenges, the role of virtual and augmented reality will definitely grow over time by transforming into the paradigm of the Metaverse of Things, where each person, thing or other en...
Article
Full-text available
Grant‐free access has been identified as a potential solution to support massive machine‐type communications by avoiding the high signaling overhead and latency issues of existing grant‐based channel access mechanisms. Motivated by this, the work in this article proposes a simple, yet efficient, strategy to enable power domain non‐orthogonal multip...
Article
Full-text available
The challenge of dynamic traffic demand in mobile networks is tackled by moving cells based on unmanned aerial vehicles. Considering the tremendous potential of unmanned aerial vehicles in the future, we propose a new heuristic algorithm for coverage optimization. The proposed algorithm is implemented based on a conditional generative adversarial n...
Preprint
Full-text available
The challenge of dynamic traffic demand in mobile networks is tackled by moving cells based on unmanned aerial vehicles. Considering the tremendous potential of unmanned aerial vehicles in the future, we propose a new heuristic algorithm for coverage optimization. The proposed algorithm is implemented based on a conditional generative adversarial n...
Article
Numerous articles are now appearing on 6G wireless systems, covering different aspects, ranging from vision, architecture, and applications to technology breakthroughs. With cellular systems in mind, this article presents six critical, yet fundamental, challenges that must be overcome before the development and deployment of 6G systems. These inclu...
Article
Full-text available
Cell selection in cellular networks is an important aspect that impacts the quality of service. The traditional cell selection mechanism is based on downlink received power. Despite the dense deployment of macrocells, mobile network operators are still confronting the daunting challenge of providing capacity and coverage. Deployment of a large numb...
Article
Full-text available
In the presence of global pandemics, the increasing demands of remote healthcare, online education, and automation systems have driven the development of the Tactile Internet (TI), which aims to support timely and reliable interactions among humans and machines. Since ultra-reliable low-latency communications (URLLC) have been considered in the fif...
Preprint
Full-text available
A large number of papers are now appearing on sixth-generation (6G) wireless systems, covering different aspects, ranging from vision, architecture, applications, and technology breakthroughs. With cellular systems in mind, this paper presents six critical, yet fundamental challenges that must be overcome before development and deployment of 6G sys...
Article
Full-text available
Self-organized wireless networks based on unmanned aerial vehicles (UAVs) are receiving increasing attention due to their flexible deployment opportunities. Typically, UAVs are used as supplementary access points to existing ground infrastructure to extend network coverage and capacity. Therefore, finding the optimal position for each UAV is a cruc...
Article
Full-text available
The Industrial Internet of Things (IIoT) revolutionizes future manufacturing facilities by integrating Internet of Things technologies into industrial settings. With the deployment of massive IIoT devices, it is difficult for the wireless network to support the ubiquitous connections with diverse quality of service (QoS) requirements. Although mach...
Article
Uplink power domain non-orthogonal multiple access (PD-NOMA) allows multiple users to simultaneously transmit their data over the same resource block by using different power levels, which are exploited by the base station (BS) for multi-user detection (MUD). Conventional PD-NOMA receivers can perform MUD when the data streams from all the multiple...
Article
Full-text available
Mobile communications have been undergoing a generational change every ten years or so. However, the time difference between the so-called "G's" is also decreasing. While fifth-generation (5G) systems are becoming a commercial reality, there is already significant interest in systems beyond 5G, which we refer to as the sixth generation (6G) of wire...
Preprint
Full-text available
Industrial Internet of Things (IIoT) revolutionizes the future manufacturing facilities by integrating the Internet of Things technologies into industrial settings. With the deployment of massive IIoT devices, it is difficult for the wireless network to support the ubiquitous connections with diverse quality-of-service (QoS) requirements. Although...
Article
Full-text available
Mobile edge computing (MEC) is currently one of the key technologies that can facilitate the evolution of the future digitized economy. MEC can provide ubiquitous computational capabilities through the multitier deployment of servers to ensure lower latencies and tighter integration with 5G, the Internet of Things, blockchains and artificial intell...
Chapter
The effective provisioning of industry verticals over the next-to-come 5G systems opens novel business opportunities for telco operators especially when considering the integration of Internet of Things (IoT) devices as enablers of business cases based on remote sensing and control. This chapter highlights the main features of IoT verticals with pa...
Chapter
This chapter discusses the ongoing work around hybrid access and network convergence, with particular emphasis on recent works on ATSSS in 3GPP. Three main aspects are analyzed: policy enforcement, integration with 5G QoS framework, interaction with underlying multi-path transport protocol. The chapter also provides some preliminary testbed results...
Chapter
The dawn of the 5G commercialization era brings the proliferation of advanced capabilities within the triptych of radio access network, end user devices, and edge cloud computing which hopefully propel the introduction of novel, complex multimodal services such as those that enlarge the physical world around us like mobile augmented reality. Managi...
Article
Mobile network evolution beyond 5G requires a complete rethink of spectrum management. To fulfill unprecedented performance expectations, future 6G networks require fine-grained spectrum sharing in terms of volume, time, and usage area. In this article, we study a novel direction for blockchain integration into the mobile network infrastructure. In...
Article
Full-text available
Single-carrier frequency-division multiple access (SC-FDMA) based index modulation (IM), referred here as SC-IM, allows users to implicitly transmit a part of their data bits by switching on some of their allocated subcarriers, followed by ${M}$ -ary constellation symbols transmission over the activated subcarriers. This sparse use of subcarriers...
Preprint
Full-text available
This article documents one of the world's first standards-compliant pre-commercial end-to-end 5th generation (5G) systems. Focus is on a standardized 5G architecture which includes the underlying 3GPP components but also the ETSI Network Function Virtualization (NFV) management and orchestration capabilities. The truly innovative character of 5G en...
Article
Although many tactual communication methods have been developed over the past decades, few of them have been widely adopted in everyday lives. In this paper, we investigate the ability to deliver text messages using patterns of vibrations. By manipulating the duration and frequency of vibrations, we designed two vibrotactile alphabets, i.e. 3F Vibr...
Article
5G networks envisage to support a range of vertical industries, circumventing any potential barriers from converging various network technologies and administrative domains. Current solutions focus only on provisioning services within single administrative domains. There is also lack of standards for sustainable end-to-end multi-domain solutions th...
Preprint
Full-text available
Tactile internet applications allow robotic devices to be remotely controlled over a communication medium with an unnoticeable time delay. In a bilateral communication, the acceptable round trip latency is usually in the order of 1ms up to 10ms depending on the application requirements. It is estimated that 70% of the total latency is generated by...
Article
Full-text available
Wireless traffic produced by modern mobile devices displays high temporal and spatial dynamics as users spontaneously engage in collective applications where a significant portion of generated data remains localized. As a result, conventional service provisioning approaches may no longer be sufficient in beyond fifth generation (B5G) systems. The c...
Article
Full-text available
To overcome the limitations of Dedicated Short Range Communications (DSRC) with short range, non-supportability of high-density networks, unreliable broadcast services, signal congestion and connectivity disruptions, vehicle-to-everything (V2X) communication networks, standardized in 3rd Generation Partnership Project (3GPP) Release 14, have been r...
Article
Full-text available
IEEE 802.11ah, a new amendment to the Wi-Fi standard, adapts Wi-Fi networks to the emerging Internet of Things (IoT). A key component of.11ah is the Restricted Access Window (RAW), a new channel access mechanism, which reduces contention when even thousands of IoT devices operate in the same area by assigning them different channel times. This pape...
Article
Full-text available
The emerging mulsemedia (MULtiple SEnsorial MEDIA) introduces new sensorial data (haptic, olfaction, gustation, etc.), significantly augmenting the conventional audio-visual communication. This can be used in many areas, such as immersive entertainment and innovative education. Previous research has been dedicated to evaluating the impact of other...
Article
Internet of things (IoT) is a revolutionizing technology which aims to create an ecosystem of connected objects and embedded devices and provide ubiquitous connectivity between trillions of not only smart devices but also simple sensors and actuators. Although recent advancements in miniaturization of devices with higher computational capabilities...
Article
IoT applications constitute one of the fastest developing areas in today's technology and at the same time pose the most demanding challenges for the respective radio access network design. While the initial studies in IoT were focused primarily on scaling the existing radio solutions for higher numbers of small-data and low-cost sensors, the curre...
Article
Full-text available
While the IoT has made significant progress along the lines of supporting its individual applications, there are many MMTC scenarios in which the performance offered by any single RAT available today might be insufficient. To address these use cases, we introduce the concept of MR-MMTC, which implies the availability and utilization of several RATs...
Article
Full-text available
For past 40 years, cellular industry has been relying on static radio access deployments with gross over-provisioning. However, to meet the exponentially growing volumes of irregular data, the very notion of a cell will have to be rethought to allow them be (re-)configured on-demand and in automated manner. This work puts forward a novel vision of...
Article
NarrowBand-Internet of Things (NB-IoT) is a radio access technology recently standardized by 3GPP. To provide reliable connections with extended coverage, a repetition transmission scheme is applied in both Random Access CHannel (RACH) procedure and data transmission. In this letter, we model RACH in the NB-IoT network taking into account the repea...
Article
As the ratification of 5G New Radio technology is being completed, enabling network architectures are expected to undertake a matching effort. Conventional cloud and edge computing paradigms may thus become insufficient in supporting the increasingly stringent operating requirements of intelligent IoT devices that can move unpredictably and at high...
Article
The 3GPP standardization rapidly moves forward with studies of a wider bandwidth waveform as well as adaptation of the emerging 5G New Radio (NR) based access to the unlicensed spectrum (NR-U). One of the basic architectures for NR-U involves carrier aggregation of an anchor – licensed – NR carrier and a secondary carrier in unlicensed spectrum, wh...
Article
Full-text available
The exploding volumes of mobile video traffic call for deploying content caches inside mobile operator networks. Within-network caching, users’ requests for popular content can be served from a content cache deployed at mobile gateways in vicinity to the end user. This inherently reduces the load on the content servers and the backbone of operator’...
Article
The availability of different paths to communicate to a user or device introduces several benefits, from boosting end-user performance to improving network utilization. Hybrid access is a first step in enabling convergence of mobile and fixed networks; however, despite traffic optimization, this approach is limited as fixed and mobile are still two...
Article
Narrowband-IoT (NB-IoT) is a radio access technology standardized by the 3GPP to support a large set of use cases for massive machine-type communications. Compared to human-oriented 4G technologies, NB-IoT has key design features in terms of increased coverage, enhanced power saving, and a reduced set of functionalities. These features allow for co...
Chapter
This chapter discusses the ongoing work around hybrid access and network convergence, with particular emphasis on recent works on ATSSS in 3GPP. Three main aspects are analyzed: policy enforcement, integration with 5G QoS framework, interaction with underlying multi-path transport protocol. The chapter also provides some preliminary testbed results...
Preprint
Full-text available
As the ratification of 5G New Radio technology is being completed, enabling network architectures are expected to undertake a matching effort. Conventional cloud and edge computing paradigms may thus become insufficient in supporting the increasingly stringent operating requirements of \emph{intelligent~Internet-of-Things (IoT) devices} that can mo...
Conference Paper
Full-text available
While experimental work in the context of 5G has gained significant traction over the past few years, the focus has mainly been on testing the features and capabilities of novel designs and architectures using very simple testbed setups. However, with the emergence of network slicing as a key feature of 5G, creating larger scale infrastructures cap...
Article
Full-text available
This article documents one of the world's first standards-compliant pre-commercial end-to-end fifth generation (5G) systems. Focus is on a standardized 5G architecture that includes the underlying 3GPP components but also the ETSI network functions virtualization management and orchestration capabilities. The truly innovative character of 5G enabli...
Preprint
The availability of different paths to communicate to a user or device introduces several benefits, from boosting enduser performance to improving network utilization. Hybrid access is a first step in enabling convergence of mobile and fixed networks, however, despite traffic optimization, this approach is limited as fixed and mobile are still two...
Article
Full-text available
To overcome the limitations of Dedicated Short Range Communications (DSRC) with short range, non-supportability of high density networks, unreliable broadcast services, signal congestion and connectivity disruptions, Vehicle-to-anything (V2X) communication networks, standardized in 3rd Generation Partnership Project (3GPP) Release 14, have been rec...
Preprint
Full-text available
To overcome the limitations of Dedicated Short Range Communications (DSRC) with short range, non-supportability of high density networks, unreliable broadcast services, signal congestion and connectivity disruptions, cellular vehicle-to-everything (C-V2X) communication networks, standardized in 3rd Generation Partnership Project (3GPP) Release 14,...
Article
Full-text available
Device-to-Device (D2D) communication based on cognitive radio (CR) technology can significantly improve the coverage and spectral efficiency. Existing research on D2D communications mainly focus on optimizing the network Quality of Service (QoS) in single-tier networks. However, the exponential growth in data traffic has inspired the move from trad...
Article
Touch is currently seen as the modality that will complement audition and vision as a third media stream over the Internet in a variety of future haptic applications which will allow full immersion and that will, in many ways, impact society. Nevertheless, the high requirements of these applications demand networks which allow ultra-reliable and lo...
Article
Full-text available
Minimally invasive surgery (MIS) is well established in many surgical applications, with an estimated surgical robot device markets anticipated to reach $20 billion by 2021 (1). It yields many known advantages over traditional open surgery, examples being smaller incision sites resulting in decreased blood loss and risk of infection, decreased leng...
Article
Full-text available
Purpose Public policy requires effective identification of the current and emerging issues being faced in industry and beyond. This paper aims to identify a set of key issues currently facing digital communications and reviews their relevance for the strategic provision of infrastructure, particularly within the UK context. Design/methodology/appr...
Article
Network softwarization is a major paradigm shift, which enables programmable and flexible system operation in challenging use cases. In the fifth-generation (5G) mobile networks, the more advanced scenarios envision transfer of high-rate mission-critical traffic. Achieving end-to-end reliability of these stringent sessions requires support from mul...
Article
Narrowband-IoT (NB-IoT) has been released by 3GPP to provide extended coverage and low energy consumption for low-cost machine-type devices. Requiring only a reasonably low-cost hardware update to the already deployed Long Term Evolution (LTE) base stations and being compatible with current core network and enhanced core solutions that aim to reduc...
Article
Will 5G be the last G? Is the ecosystem ripe for significant disruption which will change the way we design telecom systems, how we go about innovating its features? Are we able to bootstrap the design of novel and prior unheard concepts, such as Synchronized Reality, or even facilitate the birth of a new internet, the Internet of Skills? In this p...
Article
Full-text available
NarrowBand-Internet of Things (NB-IoT) is a radio access technology recently standardized by 3GPP. To provide reliable connections with extended coverage, a repetition transmission scheme is applied in both Random Access CHannel (RACH) procedure and data transmission. In this letter, we model RACH in the NB-IoT network taking into account the repea...
Article
Full-text available
Internet of things (IoT) represents one of the biggest technology trends, which transforms every physical object to an information source and revolutionizes the way we interact with our surroundings. It aims to create an ecosystem of connected objects and provide ubiquitous connectivity between trillions of multi-role devices, such as sensors and a...
Article
Full-text available
Device-to-Device (D2D) communication is expected to enable a number of new services and applications in future mobile networks and has attracted significant research interest over the last few years. Remarkably, little attention has been placed on the issue of D2D communication for users belonging to different operators. In this paper, we focus on...
Chapter
This chapter provides a summary of the State-of-the-Art and future trends related to wireless connectivity solutions for Machine-to-Machine (M2M) Communications and Machine-Type Communications (MTC) that will be part of 5G networks, and technologies beyond 5G.
Chapter
The Tactile Internet is envisioned to transport touch and actuation in real-time. It will enable unprecedented applications and revolutionize almost every segment of the society. It is expected that the next generation 5G mobile communications networks will enable the Tactile Internet at the wireless edge. The tactile internet creates daunting new...