Satellite-Based Mobile Multiservices Platform

2011 ◽  
pp. 3356-3363 ◽  
Author(s):  
Alexander Markhasin
Keyword(s):  
Mobile Communications ◽  
Information Technologies ◽  
Low Cost ◽  
Dynamic Control ◽  
Mac Protocols ◽  
Fourth Generation ◽  
Medium Access ◽  
Satellite Systems ◽  
Geographically Dispersed ◽  
The Future

The future fourth generation (4G) of the satellite-based wireless and mobile communications is particularly important for global providing of the mobile broadband global information technologies (IT) multi-services and mobile e-applications (m-applications) for geographically dispersed mass users in support of anytime, anywhere, and any required quality of service (QoS) capabilities in a low-cost way. The recent broadband satellite systems described in Ivancic et al. (1999), Evans et al. (2005), Skinnemoen, Vermesan, Iuoras, Adams, and Lobao (2005) are based mainly on centralized low-­meshed architecture with very high traffic concentration. Such structure is not adequate in context of the traffic topology for rural, remote, and difficult for access (RRD) regions. Markhasin (2001) noted that the cost of centralized systems is unacceptably large for deployment of future mass broadband communications in RRD regions (North Siberia, Scandinavia, Greenland, Canada, Alaska, Central and South East Asia, South America, Australia, etc.). As it was shown in Markhasin (2001, 2004), the future low-cost IT multi-service platforms for RRD regions can be built optimal on a mix of the terrestrial and satellite-based mobile and wireless communications with radically distributed (neural-­like) all-­IP/ATM architecture that requires breakthrough steps for search advanced satellite, mobile, and wireless 4G technologies. Markhasin (1996) and Frigon, Chan, and Leung (2001) noted that the improvement of medium access control (MAC) protocols has a dominant effect on ensuring the breakthrough features of future QoS-aware mobile and wireless technologies. The survey and analytical comparison of the fundamental principles of QoS-oriented MAC protocols were described in Markhasin, Olariu, and Todorova (2004, 2005). The radically novel multi-­functional MAC technology (MFMAC) for long-delay space mediums with fully distributed dynamic control of QoS, traffic parameters, and bandwidth resources was proposed in Markhasin (2001, 2004). This article will be focused on future QoS-aware, satellite-based, fully distributed, mesh, and scalable mobile IT multi-service and m-Applications platform’s networking technology 4G for RRD regions.

Access Security in UMTS and IMS

2008 ◽  
pp. 339-350
Author(s):  
Yan Zhang ◽  
Yifan Chen ◽  
Rong Yu ◽  
Supeng Leng ◽  
Huansheng Ning ◽  
...  
Keyword(s):  
Mobile Networks ◽  
Mobile Communications ◽  
Fourth Generation ◽  
Maintenance Cost ◽  
Mobile Telecommunications ◽  
Backward Compatibility ◽  
The Future ◽  
Universal Mobile Telecommunications System ◽  
Code Division Multiple ◽  
Time Division

Motivated by the requirements for higher data rate, richer multimedia services, and broader radio range wireless mobile networks are currently in the stage evolving from the second-generation (2G), for example, global system for mobile communications (GSM), into the era of third-generation (3G) or beyond 3G or fourth-generation (4G). Universal mobile telecommunications system (UMTS) is the natural successor of the current popular GSM (http://www.3gpp.org) code division multiple access 2000 (CDMA2000) is the next generation version for the CDMA-95, which is predominantly deployed in North America and North Korea. Time division-sychrononous CDMA (TD-SCDMA) is in the framework of 3rd generation partnership project 2 (3GPP2) and is expected to be one of the principle wireless technologies employed in China in the future (http://www.3gpp.org; 3G TS 35.206). It is envisioned that each of three standards in the framework of international mobile telecommunications- 2000 (IMT-2000) will play a significant role in the future due to the backward compatibility, investment, maintenance cost, and even politics.

Access Security in UMTS and IMS

2010 ◽  
pp. 1437-1448
Author(s):  
Yan Zhang ◽  
Yifan Chen ◽  
Rong Yu ◽  
Supeng Leng ◽  
Huansheng Ning ◽  
...  
Keyword(s):  
Mobile Networks ◽  
Mobile Communications ◽  
Fourth Generation ◽  
Maintenance Cost ◽  
Mobile Telecommunications ◽  
Backward Compatibility ◽  
The Future ◽  
Universal Mobile Telecommunications System ◽  
Code Division Multiple ◽  
Time Division

Motivated by the requirements for higher data rate, richer multimedia services, and broader radio range wireless mobile networks are currently in the stage evolving from the second-generation (2G), for example, global system for mobile communications (GSM), into the era of third-generation (3G) or beyond 3G or fourth-generation (4G). Universal mobile telecommunications system (UMTS) is the natural successor of the current popular GSM (http://www.3gpp.org) code division multiple access 2000 (CDMA2000) is the next generation version for the CDMA-95, which is predominantly deployed in North America and North Korea. Time division-sychrononous CDMA (TD-SCDMA) is in the framework of 3rd generation partnership project 2 (3GPP2) and is expected to be one of the principle wireless technologies employed in China in the future (http://www.3gpp.org; 3G TS 35.206). It is envisioned that each of three standards in the framework of international mobile telecommunications- 2000 (IMT-2000) will play a significant role in the future due to the backward compatibility, investment, maintenance cost, and even politics.

scholarly journals Comparative Assessment of the LoRaWAN Medium Access Control Protocols for IoT: Does Listen before Talk Perform Better than ALOHA?

Electronics ◽  
2020 ◽  
Vol 9 (4) ◽  
pp. 553 ◽  
Author(s):  
Luca Leonardi ◽  
Lucia Lo Bello ◽  
Filippo Battaglia ◽  
Gaetano Patti
Keyword(s):  
Access Control ◽  
Medium Access Control ◽  
Smart Cities ◽  
Low Cost ◽  
Mac Protocols ◽  
Spectrum Access ◽  
Medium Access Control Protocols ◽  
Medium Access ◽  
Long Distance ◽  
Comparative Performance

Low-Power Wide-Area Networks (LPWANs) are emerging as appealing solutions for several Internet of Things (IoT) applications, such as healthcare, smart cities and Industry 4.0, thanks to their ease of deployment, low energy consumption and large coverage range. LoRaWAN is one of the most successful LPWAN standards, as it supports robust long-distance communications using low-cost devices. To comply with the ETSI regulations, LoRaWAN can adopt as medium access control (MAC) layer either a pure ALOHA approach with duty-cycle limitations or a polite spectrum access technique, such as Listen Before Talk (LBT). The two approaches have their pros and cons that need to be carefully evaluated. The studies in the literature that so far have addressed an evaluation of MAC protocols for LoRaWAN refer to a previous and now obsolete version of the ETSI regulations, therefore they do not take into account the current limits on the timing parameters for polite spectrum access, such as that maximum time an end-node is allowed to be transmitting per hour. For this reason, the contribution of this work is two-fold. First, the paper discusses the restrictions that the current ETSI regulations impose on some timing parameters of the two kinds of MAC protocols for LoRaWAN. Second, the paper provides comparative performance assessments of the two protocols through simulations in realistic scenarios under different workload conditions.

Cognitive Radio Techniques for M2M Environments

2015 ◽  
pp. 909-927
Author(s):  
Daniele Tarchi ◽  
Romano Fantacci ◽  
Dania Marabissi
Keyword(s):  
Cognitive Radio ◽  
Access Control ◽  
Medium Access Control ◽  
Low Cost ◽  
Mac Protocols ◽  
Primary System ◽  
New Paradigm ◽  
Medium Access ◽  
Radio Communications ◽  
Cognitive Techniques

Machine to Machine (M2M) communications have been recently introduced as a viable paradigm for allowing low cost and efficient communications among devices mainly in an autonomous manner. Even if M2M protocols need dedicated resources, a new paradigm, called Cognitive M2M (CM2M) communications, has been recently considered exploiting cognitive/opportunistic radio communications. After having introduced the problem of applying cognitive techniques in M2M scenarios, the authors focus their attention on the Medium Access Control (MAC) protocols for CM2M scenarios, with a particular attention on the OFDMA-based primary systems. Among other approaches, the authors focus on a data-aided approach for the access of the secondary devices aiming to reduce interference toward the primary system.

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