scholarly journals Analisa Layanan Keamanan, Performansi Pensinyalan dan Kualitas Panggilan Interkoneksi SIP International Direct Dialing Menggunakan Softswitch Class 4 dan Session Border Controller

2017 ◽  
Vol 3 (2) ◽  
pp. 201
Author(s):  
Purwo Panggalih Gentayu ◽  
Mudrik Alaydrus
Keyword(s):  
Peer To Peer ◽  
End User ◽  
User Agent ◽  
R Factor ◽  
End Point ◽  
Security Service ◽  
Sip Server ◽  
Session Border Controller

Dalam aplikasi SIP-Based VoIP, dua end point / User Agent (UA)dapat berkomunikasi secara peer to peer / peering menggunakan SIP,begitu juga interkoneksi antar SIP server sehingga implementasi SIPBasedVoIP tidak hanya dapat diterapkan untuk jaringan akses, namunjuga interkoneksi antar operator melalui jaringan IP. Penelitian inimencoba memberikan analisa interkoneksi antar operator untukInternational Direct Dialing (IDD) yang diterapkan di internasionalswitching center PT. Indosat, Tbk. menggunakan protokol SIP yangmencakup mekanisme layanan keamanan (security service), performansipensinyalan SIP dan kualitas panggilan. Layanan keamanan mencegahterjadinya kemungkinan serangan DOS dari jaringan luar. Performansipensinyalan setelah adanya layanan keamanan menunjukan performayang sangat baik SEER 99.6% untuk incoming dan 98.94% untukoutgoing, SER sebesar 22.68 % untuk incoming dan 47.11% untukoutgoing. Kinerja kualitas panggilan dengan perspektif penilaianpengguna (end user), menggunakan parameter MOS didapatkan nilai 4.4dan R-Factor diantara 93-93.2 setiap jam.

A pragmatic approach towards end-user engagement in the context of peer-to-peer energy sharing

Energy ◽  
2020 ◽  
Vol 205 ◽  
pp. 118001 ◽  
Author(s):  
Lurian P. Klein ◽  
Luisa M. Matos ◽  
Giovanni Allegretti
Keyword(s):  
Peer To Peer ◽  
User Engagement ◽  
End User ◽  
Pragmatic Approach ◽  
Energy Sharing

P2P-NetPay

2012 ◽  
pp. 159-182
Author(s):  
Xiaoling Dai ◽  
Kaylash Chaudhary ◽  
John Grundy
Keyword(s):  
Free Rider ◽  
Peer To Peer ◽  
User Evaluation ◽  
P2p Networks ◽  
Payment Systems ◽  
End User ◽  
Content Sharing ◽  
Free Rider Problem ◽  
Peer To Peer Networks ◽  
Payment Credit

Micro-payment systems are becoming an important part of peer-to-peer (P2P) networks. The main reason for this is to address the “free-rider” problem in most existing content sharing systems. The authors of this chapter have developed a new micro-payment system for content sharing in P2P networks called P2P-Netpay. This is an offline, debit based protocol that provides a secure, flexible, usable, and reliable credit service in peer-to-peer networks ensuring equitable participation by all parties. The authors have carried out an assessment of micro-payment against non-micro-payment credit systems for file sharing applications. The chapter reports on the design of our experiment and results of an end user evaluation. The chapter then discusses the performance of the credit model, comparing it to a non-micro-payment credit model. Through evaluation of the proposed system and comparison with other existing systems, the authors find that the new approach eliminates the “free-rider” problem. The chapter analyses a heuristic evaluation performed by a set of evaluators and presents directions for research aiming to improve the overall satisfaction and efficiency of this model for peers.

Recent Advances in Peer-to-Peer Video Streaming by Using Scalable Video Coding

2012 ◽  
pp. 162-195 ◽  
Author(s):  
Dan Grois ◽  
Ofer Hadar
Keyword(s):  
Video Coding ◽  
Video Streaming ◽  
Scalable Video Coding ◽  
Peer To Peer ◽  
Peer Networks ◽  
Scalable Video ◽  
End User ◽  
Coding Efficiency ◽  
Peer To Peer Networks ◽  
The Media

Scalable Video Coding provides important functionalities, such as the spatial, temporal, and SNR (quality) scalability, thereby significantly improving coding efficiency over prior standards such as the H.264/AVC and enabling the power adaptation. In turn, these functionalities lead to the enhancement of the video streaming over Peer-to-Peer networks, thereby providing a powerful platform for a variety of multimedia streaming applications, such as video-on-demand, video conferencing, live broadcasting, and many others. P2P systems are considered to be extremely cost-effective, since they utilize resources of the peer machines (e.g., CPU resources, memory resources, and bandwidth). However, since bandwidth is usually not constant and also since Peer-to-Peer networks suffer from the packet loss, there is no guarantee for the end-user video presentation quality. In addition, due to different server and end-user hardware configurations, it will be useful to specify the quality of the media (e.g., the bit-rate, spatial/temporal resolution, and the like). As a result, the Scalable Video Coding approach is an excellent choice, since the media streaming can be adjusted to a suitable stream to fit a particular Peer-to-Peer network and particular end-user requirements.

Privacy-Aware Contact Sharing for Groups in P2P Networks

2021 ◽  
Vol 12 (4) ◽  
pp. 36-54
Author(s):  
Tommi Meskanen ◽  
Jarkko Kuusijärvi ◽  
Valtteri Niemi
Keyword(s):  
Social Media ◽  
Open Source ◽  
Specific Problem ◽  
Peer To Peer ◽  
P2p Networks ◽  
Social Media Platform ◽  
End Point ◽  
Share Data ◽  
Media Platform

The need for peer-to-peer (p2p) communications is obvious because current centralized solutions are capturing and storing too much information from individuals communicating with each other. HELIOS platform introduces a new social media platform that is not controlled by any central operator but brings the power of possession of the data back to the users. It does not have centralized servers that store and handle receiving/sending of the messages. Instead, HELIOS platform relies on the current open-source solutions available in the p2p communities to propagate the messages to the wanted recipients of the data and/or messages. The authors of this paper propose a set of protocols to help answer one specific problem related to p2p communication. Especially, this paper proposes how to privately share data (end-point address or other) of the user with such other users who have previously connected with the user securely, either offline or online.

scholarly journals Economic Assessment of the Peer-to-Peer Trading Policy of Distributed PV Electricity: A Case Study in China

2020 ◽  
Vol 12 (13) ◽  
pp. 5235
Author(s):  
Ying Wang ◽  
Lidan Tian ◽  
Junrong Xia ◽  
Weishi Zhang ◽  
Kaifeng Zhang
Keyword(s):  
Economic Assessment ◽  
Peer To Peer ◽  
Sensitivity Analyses ◽  
End User ◽  
Policy Document ◽  
Distributed Generators ◽  
The Cost ◽  
Transmission And Distribution ◽  
Trading Policy

China’s government launched a policy in October 2017 to permit the distributed generators to peer-to-peer trade their electricity generation on the market. Several clauses in the policy document are, however, unclear and ambiguous. This work identifies three vital but not clearly detailed issues in the policy document: (1) participation eligibility, (2) the grid fee calculation method, and (3) subsidy rates. Then, we carry out a comprehensive analysis of the economic impacts of the trade policy based on a case study of an eastern city in China. Sensitivity analyses on the impacts of the subsidy rates, transmission and distribution prices (TDPs), and end-user regulated prices are conducted. The results show that the trading policy will benefit the photovoltaic (PV) generators with more revenue by 6–11%, reduce the cost for end-users by 6–12%, and decrease the revenue of the power grid company by 32–55%.

scholarly journals P2P4GS : une spécification de grille pair-à-pair de services auto-gérés

2014 ◽  
Vol Volume 17 - 2014 - Special... ◽  
Author(s):  
Bassirou Gueye ◽  
Olivier Flauzac ◽  
Ibrahima Niang ◽  
Cyril Rabat
Keyword(s):  
Peer To Peer ◽  
The Other ◽  
Grid Services ◽  
End User ◽  
Management Protocol ◽  
Management Of Resources ◽  
International Audience ◽  
Adaptive Solution ◽  
High Degree ◽  
Grid Based

International audience The grid-based peer-to-peer architectures were used either for storage and data sharing or computing. So far, the proposed solutions with respect to grid services are based on hierarchical topologies, which present a high degree of centralization. The main issue of this centralization is the unified management of resources and the difficult to react rapidly against failure and faults that can affect grid users. In this paper, we propose a original specification, called P2P4GS, that enables selfmanaged service of peer-to- peer grid. Therefore, we design a self-adaptive solution for services deployment and invocation which take account the paradigm of peer-to-peer services. Furthermore, the deployment, and invocation are completely delegated to the platform and are done a transparent manner with respect to the end user. We propose a generic specification that is not related to a particular peer-to-peer architecture or a management protocol services defined in advance. On the other hand, we propose a study of algorithmic complexities of deployment and service localization primitives in P2P4GS by immersing them on the classical topologies of P2P stack ie the ring and tree. The obtained performances are satisfactory for these different topologies.

Experten aus Erfahrung

PADUA ◽  
2016 ◽  
Vol 11 (1) ◽  
pp. 65-71 ◽  
Author(s):  
Jörg Haslbeck
Keyword(s):  
Soziale Unterstützung ◽  
Peer To Peer

Zusammenfassung. In der Gesundheitsversorgung von Menschen, die mit chronischen Krankheiten leben, wird soziale Unterstützung durch «peers» immer bedeutsamer, d. h. durch Personen, die aufgrund ähnlicher Krankheits- und Alltagserfahrungen in einer vergleichbaren Lebenssituation sind. Welche Potenziale, Chancen sowie Grenzen hat «peer-to-peer healthcare» im Kontext von Selbstmanagementförderung? Der Beitrag diskutiert dies anhand von Erfahrungen mit dem Stanford Kursprogramm «Gesund und aktiv leben».

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