Future Mobile Communication Networks: Challenges in the Design and Operation

Marsch, Patrick; Raaf, Bernhard; Szufarska, Agnieszka; Mogensen, Preben; Guan, Hao; Färber, Michael; Redana, Simone; Pedersen, Klaus I.; Kolding, Troels

doi:10.1109/mvt.2011.2179343

Cited by 58 publications

(35 citation statements)

References 6 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Tactile Internet [1] will demand latencies at least one order of magnitude smaller than what fourth generation (4G) can achieve. Machine type communication (MTC) [2] will require loose synchronization, low power consumption and a massive number of connections. Wireless Regional Area Network (WRAN) [3] needs to cover wide areas to provide Internet access in low populated regions.…”

Section: Introductionmentioning

confidence: 99%

Precoded GFDM transceiver with low complexity time domain processing

Matthé

Mendes

Gaspar

et al. 2016

J Wireless Com Network

View full text Add to dashboard Cite

Future wireless communication systems are demanding a more flexible physical layer. GFDM is a block filtered multicarrier modulation scheme proposed to add multiple degrees of freedom and to cover other waveforms in a single framework. In this paper, GFDM modulation and demodulation is presented as a frequency-domain circular convolution, allowing for a reduction of the implementation complexity when MF, ZF and MMSE filters are employed as linear demodulators. The frequency-domain circular convolution shows that the DFT used in the GFDM signal generation can be seen as a precoding operation. This new point-of-view opens the possibility to use other unitary transforms, further increasing the GFDM flexibility and covering a wider set of applications. The following three precoding transforms are considered in this paper to illustrate the benefits of precoded GFDM: (i) Walsh Hadamard Transform; (ii) CAZAC transform and; (iii) Discrete Hartley Transform. The PAPR and symbol error rate of these three unitary transform combined with GFDM are analyzed as well.

show abstract

Section: Introductionmentioning

confidence: 99%

Precoded GFDM transceiver with low complexity time domain processing

Matthé

Mendes

Gaspar

et al. 2016

J Wireless Com Network

View full text Add to dashboard Cite

show abstract

“…Given the current network loading, new methods of reuse and offloading are required to accommodate the expected influx of mobile traffic [3]. In other words, the network needs additional small cells beyond those created by fixed access points, such as those introduced by direct connectivity between wireless devices (see Fig.…”

Section: Introductionmentioning

confidence: 99%

Analyzing Assisted Offloading of Cellular User Sessions onto D2D Links in Unlicensed Bands

Andreev

Galinina

Pyattaev

et al. 2015

IEEE J. Select. Areas Commun.

112

View full text Add to dashboard Cite

For the past years, the analysts have been predicting a tremendous and continuous increase in mobile traffic, causing much of industry and academia to seek out any and all methods to increase wireless network capacity. In this paper, we investigate one such method, cellular data offloading onto direct connections between proximate user devices, which has been shown to provide significant wireless capacity gains. To do so, we formulate a new system model that couples a cellular network in licensed bands and a device-to-device (D2D) network in unlicensed bands. We propose that devices be continually associated with the cellular base station and use this connectivity to help manage their direct connections in unlicensed spectrum. In particular, we demonstrate that assisted offloading of cellular user sessions onto the D2D links improves the degree of spatial reuse and reduces the impact of interference. In this study, a session is a real-time flow of data from one user to another, which adheres to a Poisson point process (PPP). By contrast to a throughput-or capacity-centric system view, the application of PPP enables formulations where entire user sessions, rather than singular data packets, are arriving at random and leaving the system after being served. The proposed methodology is flexible enough to accommodate practical offloading scenarios, network selection algorithms, quality of service measures, and advanced wireless technologies. In this study, we are primarily interested in evaluating the data session blocking probability in dynamically loaded cellular and D2D networks, but given the importance of energy efficiency for mobile devices, we are also interested in characterizing the energy expenditure of a typical data session in these different networks. First with our advanced analytical methodology and then with our detailed system-level simulator, we evaluate the performance of network-assisted data session offloading from cellular to D2D connections under a variety of conditions. This analysis represents a useful tool in the development of practical offloading schemes and ongoing standardization efforts.

show abstract

“…Machine-to-machine (M2M) communications, also known as machine-type communications (MTC) in the Third Generation Partnership Project (3GPP) standards, are expected to provide ubiquitous connectivity among machines without the need for human intervention [1], [2]. Various M2M services are typically required to consume little bandwidth with minimal impact on radio access networks (RANs) [3].…”

Section: Introductionmentioning

confidence: 99%

Joint Access Control and Resource Allocation for Concurrent and Massive Access of M2M Devices

Hwang

Lee

2015

IEEE Trans. Wireless Commun.

127

View full text Add to dashboard Cite

Machine-to-machine (M2M) communications, also known as machine-type communications (MTC) in 3GPP LTE systems, provide autonomous connectivity between machines without human intervention to create new service, e.g., the Internet of Things and the smart grid. M2M communications normally involve a large number of MTC devices (MTCDs) to support a variety of sensor applications. Consequently, concurrent and massive access attempts of MTCDs to radio access networks (RANs) may cause intolerable delay, packet loss, and even service unavailability. In this paper, we propose a joint optimal physical random access channel (PRACH) resource allocation and access control mechanism to address the performance degradation caused by concurrent and massive access attempts of MTCDs in LTE systems. We define the notion of random access efficiency and formulate an optimization problem for maximization of the random access efficiency with random access delay constraint. We also propose a dynamic resource allocation and access control algorithm based on estimation of the number of MTCDs for a system with dynamically varying numbers of massive MTCDs. Then, an analytical model is provided using a discrete-time Markov chain for the proposed mechanism. The effectiveness of the proposed algorithm is demonstrated via analysis and simulations. The proposed algorithm was able to maintain the optimal random access efficiency while satisfying the average random access delay requirement of MTCDs in order to handle massive and dynamic MTCDs per cell.Index Terms-M2M communications, dynamic resource allocation, access control, random access efficiency, optimization 1536-1276 (c)

show abstract

Future Mobile Communication Networks: Challenges in the Design and Operation

Cited by 58 publications

References 6 publications

Precoded GFDM transceiver with low complexity time domain processing

Precoded GFDM transceiver with low complexity time domain processing

Analyzing Assisted Offloading of Cellular User Sessions onto D2D Links in Unlicensed Bands

Joint Access Control and Resource Allocation for Concurrent and Massive Access of M2M Devices

Contact Info

Product

Resources

About