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Reducing Signaling Overload:: Flexible Capillary Admission Control for Dense MTC over LTE Networks
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab). (Rs Lab)ORCID iD: 0000-0002-5164-3597
KTH, School of Information and Communication Technology (ICT), Communication Systems, CoS, Radio Systems Laboratory (RS Lab).
Ericsson Research.
Aalto University..
2015 (English)Conference paper, Published paper (Refereed)
Abstract [en]

The increasing adoption of Machine-Type Communication (MTC) applications on existing LongTerm Evolution (LTE) brings new challenges for additional signaling mechanism and system capacity.MTC is related to a high number of devices; which represents a challenge when performing control and signaling procedures required for getting resource grant since these processes are inefficient compared to the actual resource usage for small data transmissions.Solutions based on device grouping propose a static grouping approach, which does not perform well in low load scenario. This paper introduces the notion of a flexible admission/connection that can give granular group device control to Core network. With the proposed approach devices can be grouped for a certain period under supervision and control of a gateway and they can be ungrouped when there is no need for grouping them together. In this way, a finer control can be achieved on prioritizing certain services and load balancing. Our simulation results demonstrate significant signaling reduction by using this simple scheme compared to conventional connection procedure.

Place, publisher, year, edition, pages
IEEE Press, 2015. p. 1305-1310
Keywords [en]
MTC; M2M; LTE; LTE-Advanced; control signaling; admission control; signaling overload; capillary networks; dynamic group; cluster.
National Category
Communication Systems
Research subject
Information and Communication Technology
Identifiers
URN: urn:nbn:se:kth:diva-214962DOI: 10.1109/PIMRC.2015.7343500Scopus ID: 2-s2.0-84958036372ISBN: 978-1-4673-6781-3 (print)OAI: oai:DiVA.org:kth-214962DiVA, id: diva2:1144577
Conference
2015 IEEE 26th International Symposium on Personal, Indoor and Mobile Radio Communications - (PIMRC): Mobile and Wireless Networks
Projects
EIT Digital project EXAM
Funder
Wireless@kth
Note

QC 20170927

Available from: 2017-09-26 Created: 2017-09-26 Last updated: 2017-10-02Bibliographically approved
In thesis
1. Designing Efficient Access Control to Comply Massive-Multiservice IoT over Cellular Networks
Open this publication in new window or tab >>Designing Efficient Access Control to Comply Massive-Multiservice IoT over Cellular Networks
2017 (English)Licentiate thesis, comprehensive summary (Other academic)
Abstract [en]

Internet of Things (IoT) has come in reality to improve our living quality. Automation is embraced in all the possible business verticals that have diverse communication needs ranged from static devices’ sporadic transmission to mobile devices’ every minute transmission. Despite, there are many technologies available today to support IoT services; cellular systems can play a vital role for IoT services, like wearables, vehicular, and industrial IoT, rollout which have either mobility or security concern. 

IoT services generated traffic are foreseen as a sporadic-bursty traffic. As the cellular networks are designed to serve continuous data traffic, the existing system’s access control mechanism cannot efficiently conform to the burstiness of traffic. This limits the scope of the network scalability in terms of simultaneous serving devices’ capacity. Also, this bursty pattern can extensively increase the rate of network’s congestion incident. In this thesis, we focus on these underlying challenges to support a large number of heterogeneous IoT services with existing services over the same radio network. An important question for supporting IoT services over cellular networks is how detrimental are the effects of IoT services on other services of cellular networks. This dissertation seeks to answer this with quantitative results to indicate the real constraints of existing networks.

An important conclusion is that existing cellular system is incompetent to support the bursty arrival of massive IoT devices in terms of radio networks’ access control plane’s scalability. Therefore, this dissertation presents solutions to overcome the identified limitations of access control planes. To improve the performance of the access control plane, we incorporate a vertical core network controlled group management scheme that can assure the operator’s granular control over capillary gateways. Besides, this introduces a unique handover opportunity between cellular and capillary network vertices. Then, we present a simple but efficient initial access mechanism to overcome the initial access collision at the very early stage. Finally, we show the impact of access collision and retransmission on the initial access resource dimensioning.We present a practical traffic model that is realistic for the traffic scenario for mixed-traffic. Our presented results and analysis depict the trade-offs between access rate, retransmission and resource allocation over time and frequency.Our results reveal that with proposed schemes of the cellular system’s access control plane can be scalable and resilient to accommodate a large number of IoT devices without incurring extra delay or need of resources to the system.

Place, publisher, year, edition, pages
Stockholm: Kungliga Tekniska högskolan, 2017. p. 67
Series
TRITA-ICT ; 2017:18
National Category
Communication Systems
Research subject
Information and Communication Technology
Identifiers
urn:nbn:se:kth:diva-214974 (URN)978-91-7729-547-1 (ISBN)
Presentation
2017-11-10, Sal A (Sal östen Mäkitalo), Kungl Tekniska högskolan, Kistagången 16, Kista, Stockholm, 11:00 (English)
Opponent
Supervisors
Note

QC 20170928

Available from: 2017-10-02 Created: 2017-09-27 Last updated: 2017-10-04Bibliographically approved

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Publisher's full textScopushttp://ieeexplore.ieee.org/document/7343500/

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