02191nas a2200133 4500008004100000245006500041210006300106260001500169300001200184520170200196100002101898700002201919856011601941 2018 eng d00aAL-FEC application on NGMN-Edge computing integrated systems0 aALFEC application on NGMNEdge computing integrated systems cJuly 3 - 6 a364-3693 aEdge computing or edge networking is an architecture that uses one or more collaborative multitude of enduser clients or near-user edge devices to carry out a substantial amount of communication, control, management or other operations. Edge Computing for mobile networks is a new technology which is currently under standardization providing an IT service environment and cloud-computing capabilities at the edge of the mobile network in close proximity to the mobile end users. The aim of this technology is to reduce latency, ensure highly efficient network operation and service delivery, providing improved user experience. All of these can be translated into value and can create opportunities for operators, application and content providers enabling them to better utilize the mobile broadband capabilities. Furthermore, edge computing enables a new value chain for end users but also for industries allowing to efficient deliver their applications over the mobile network providing fresh business opportunities and new use cases. FEC is a feedback free error recovery method where the sender introduces redundant data in advance with the source data enabling the recipient to recover from different arbitrary packet losses. Recently, the adoption of FEC error control method has been boosted by the introduction of the powerful RaptorQ Application Layer FEC (AL-FEC) codes. In this work we propose the integration of AL-FEC error protection application at the edge layer. We propose a novel AL-FEC application architecture scheme based on RaptorQ codes and we analyze the performance enhancements such an error control architecture can introduce on NGMN-edge computing integrated systems.1 aBouras, Christos1 aKanakis, Nikolaos uhttps://telematics.upatras.gr/telematics/publications/al-fec-application-ngmn-edge-computing-integrated-systems01809nas a2200133 4500008004100000245006600041210006400107300001200171490000600183520132600189100002101515700002201536856011701558 2018 eng d00aEvolving AL-FEC application on 5G NGMN-Edge computing systems0 aEvolving ALFEC application on 5G NGMNEdge computing systems a152-1600 v33 aFifth generation of mobile networks (5G) comes to cope with the context of the new mobile telecommunications era. Edge computing is a new collaborative technology under standardization utilizing end-user devices or near-end-user edge devices to operate processing, communication, or control operations. The achievement of efficient error control is a very critical aspect in the successful development of 5G Next Generation Mobile Networks (NGMN). Especially utilizing Forward Error Correction (FEC) codes on the application level is an efficient approach on improving error control on NGMN since it is adopted in several mobile multicast standards. FEC is a feedback free error control technique where redundant data are introduced with the source data to enable the recipient recovering from packet losses with an interesting approach on applying AL-FEC error protection introduces deterministic or randomized online algorithms. Based on this we present a novel online scheme on applying AL-FEC application on the context of the AL-FEC policy online problem. In this work we present an online algorithm based on feedback received from mobile end-users which adapts the introduced protection based on this. Another aspect of this work is the utilization of AL-FEC protection on the edge level based on RaptorQ FEC codes.1 aBouras, Christos1 aKanakis, Nikolaos uhttps://telematics.upatras.gr/telematics/publications/evolving-al-fec-application-5g-ngmn-edge-computing-systems02099nas a2200133 4500008004100000245004800041210004700089260001900136300000900155520165600164100002101820700002201841856010201863 2018 eng d00aEvolving AL-FEC application towards 5G NGMN0 aEvolving ALFEC application towards 5G NGMN cFebruary 26-28 a1-153 aThe fifth generation of mobile technology (5G) is positioned to address the demands and business contexts of 2020 and beyond. Therefore, in 5G, there is a need to push the envelope of performance to provide, where needed, for example, much greater throughput, much lower latency, ultra-high reliability, much higher connectivity density, and higher mobility range. A crucial point in the effective provisioning of 5G Next Generation Mobile Networks (NGMN) lies in the efficient error control and in more details in the utilization of Forward Error Correction (FEC) codes on the application layer. FEC is a method for error control of data transmission adopted in several mobile multicast standards. FEC is a feedback free error recovery method where the sender introduces redundant data in advance with the source data enabling the recipient to recover from different arbitrary packet losses. Recently, the adoption of FEC error control method has been boosted by the introduction of powerful Application Layer FEC (AL-FEC) codes. Furthermore, several works have emerged aiming to address the efficient application of ALFEC protection introducing deterministic or randomized online algorithms. In this work we propose a novel AL-FEC scheme based on online algorithms forced by the well stated AL-FEC policy online problem. We present an algorithm which exploits feedback capabilities of the mobile users regarding the outcome of a transmission, and adapts the introduced protection respectively. Moreover, we provide an extensive analysis of the proposed ALFEC algorithm accompanied by a performance evaluation against common error protection schemes.1 aBouras, Christos1 aKanakis, Nikolaos uhttps://telematics.upatras.gr/telematics/publications/evolving-al-fec-application-towards-5g-ngmn01691nas a2200157 4500008004100000245007900041210006900120490000700189520108500196100002101281700002201302700002401324700002701348700002801375856013001403 2018 eng d00aMCS Selection Exploiting Femtocells Utilization in Multicast Transmissions0 aMCS Selection Exploiting Femtocells Utilization in Multicast Tra0 v313 aMulticast-Broadcast over Single Frequency Network (MBSFN) technology, as introduced by the Long Term Evolution Advanced (LTE-A) group, is expected to be part of the upcoming cellular systems offering resource efficiency to broadcast services. MBSFN transmission is suitable to serve multicast groups searching the same content. In addition, the fast emerging technology of femtocells networks and their hybrid nature can lead to efficient resource sharing between non-subscribed users when located inside their coverage. The focus of this manuscript is twofold; firstly, we have contacted simulation experiments to compare the MBSFN transmission with the traditional PTP transmission for various femtocell distributions and network topology changes; secondly, a novel multicast transmissions mechanism is proposed from non-subscribed users who exploit femtocells resources for broadcast services, without limiting user’s data requirements. The simulation results lead to a significant system’s performance in terms of average throughput, total capacity and energy consumption.1 aBouras, Christos1 aKanakis, Nikolaos1 aKokkinos, Vasileios1 aPapachristos, Nikolaos1 aVouyioukas, Demosthenes uhttps://telematics.upatras.gr/telematics/publications/mcs-selection-exploiting-femtocells-utilization-multicast-transmissions01753nas a2200133 4500008004100000245006200041210006000103300001100163490000700174520128200181100002101463700002201484856011301506 2017 eng d00aOnline AL - FEC Policy Problem on Mobile Unicast Services0 aOnline AL FEC Policy Problem on Mobile Unicast Services a95-1020 v233 a
Forward error correction (FEC) is a method for error control of data transmission adopted in several mobile multicast standards. FEC is a feedback free error recovery method where the sender introduces redundant data in advance with the source data enabling the recipient to recover from different arbitrary packet losses. Recently, the adoption of FEC error control method has been boosted by the introduction of powerful Application Layer FEC (AL-FEC) codes, e.g. RaptorQ codes. Furthermore, several works have emerged aiming to address the shortcomings of AL-FEC protection application utilizing deterministic or randomized online algorithms to enhance the efficiency of AL-FEC error control method. In this work, since the investigation of AL-FEC application as primary or auxiliary error protection method over mobile multicast environments is a well investigated field but the opportunity of utilizing the AL-FEC over mobile unicast services as the only method for error control replacing common feedback based methods that are now considered to be obsolete, we provide an analysis on the feasibility of AL-FEC protection over unicast delivery utilizing online algorithms in conjunction with AL-FEC codes with exceptional recovery performance.
1 aBouras, Christos1 aKanakis, Nikolaos uhttps://telematics.upatras.gr/telematics/publications/online-al-fec-policy-problem-mobile-unicast-services-001724nas a2200169 4500008004100000245009400041210006900135260001700204300001200221520105700233100002101290700002201311700002401333700002701357700002801384856014201412 2016 eng d00aUtilization of Hybrid Access Femtocells During Multicast Transmissions in Mobile Networks0 aUtilization of Hybrid Access Femtocells During Multicast Transmi cJune 27 - 30 a190-1943 aFemtocells enhance indoor coverage of mobile services using the owner’s broadband connection. They were initially designed to serve a number of subscribed User Equipments within their range. This design however, resulted in underutilization of the femtocells resources, and simultaneously in high interference levels for nearby non-subscribed users. Nowadays, femtocells can support multicast transmissions, while their hybrid operation allows non-subscribed users to use a portion of their resources. In this paper we propose a novel mechanism that is based on the selection of the appropriate Modulation and Coding Scheme. The mechanism allows non-subscribed users to utilize a portion of the femtocells’ resources for multicast transmissions when located inside their coverage, without affecting the owners’ satisfaction. The simulation results show that depending on the portion of the femtocells’ resources allocated to non-subscribed users, the mechanism may significantly increase the average user throughput.
1 aBouras, Christos1 aKanakis, Nikolaos1 aKokkinos, Vasileios1 aPapachristos, Nikolaos1 aVouyioukas, Demosthenes uhttps://telematics.upatras.gr/telematics/publications/utilization-hybrid-access-femtocells-during-multicast-transmissions-mobile-networks01724nas a2200133 4500008004100000245005800041210005700099260002100156300001200177520124600189100002101435700002201456856011201478 2015 eng d00aOnline AL-FEC protection over Mobile Unicast Services0 aOnline ALFEC protection over Mobile Unicast Services cJune 29 - July 2 a234-2383 aForward error correction (FEC) is a method for error control of data transmission adopted in several mobile multicast standards. FEC is a feedback free error recovery method where the sender introduces redundant data in advance with the source data enabling the recipient to recover from different arbitrary packet losses. Recently, the adoption of FEC error control method has been boosted by the introduction of powerful Application Layer FEC (AL-FEC) codes i.e., RaptorQ codes. Furthermore, several works have emerged aiming to address the efficient application of AL-FEC protection introducing deterministic or randomized online algorithms. The investigation of ALFEC application as primary or auxiliary error protection method over mobile multicast environments is a well investigated field. However, the opportunity of utilizing the AL-FEC over mobile unicast services as the only method for error control, replacing common feedback based methods that are now considered to be obsolete, is not yet examined. In this work we provide an analysis on the feasibility of AL-FEC protection over unicast delivery utilizing online algorithms on the application of AL-FEC codes with exceptional recovery performance.
1 aBouras, Christos1 aKanakis, Nikolaos uhttps://telematics.upatras.gr/telematics/publications/online-al-fec-protection-over-mobile-unicast-services