Relevant bibliographies by topics / EGPSR

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  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers

Academic literature on the topic 'EGPSR'

Author: Grafiati
Published: 3 June 2025
Last updated: 20 July 2025

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Journal articles on the topic "EGPSR"

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Pavan Kumar M V N R. "Trust and Energy Effective Framework for Wireless Sensor Networks." Journal of Electrical Systems 20, no. 7s (2024): 787–91. http://dx.doi.org/10.52783/jes.3451.

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Sensor nodes have been manufactured from an enormous amount of very thick sensor systems. To a large extent, wireless sensor networks were powered by electricity. The sensor connection has to work under really uncertain conditions. The nodes are powerless to various types of dynamic attacks especially specific outbound and well attacks under such conditions. These attacks inject malicious packages by trading the knot. Topographical conventions of direction of wireless sensor connections were created by thinking about the safety and power angle aspects of these assaults. In this article, a directing convention named energy-efficient and confidence implanted greedy perimeter stateless routing algorithm (EETGPSR) suggested for wireless sensor connections to join confidence systems in power-aware greedy perimeter stateless routing algorithm (EGPSR). The results show that EETGPSR beats EGPSR by reducing maintenance and improving the connection delivery ratio.
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Du, Ruijin, Qi Wu, Gaogao Dong, et al. "Natural Gas Scarcity Risk for Countries along the Belt and Road." Energies 15, no. 3 (2022): 1053. http://dx.doi.org/10.3390/en15031053.

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The rapid development of the Belt and Road economics has generated a considerable energy demand. Under the general trend of the global energy transition, natural gas resources are becoming the main driving force. The limited natural gas resources are posing a significant risk to economies, and this risk may also be transferred to other distant regions through economic trade. The aim of this study is to explore the trans-regional (sectoral) transmission pattern of natural gas scarcity risk. The main contribution of this paper is the assessment of the local natural gas scarcity risk (LGSR) and cross-region transfer relationship of embodied natural gas scarcity risk (EGSR), which are evaluated for the BRI economies. In addition, the network amplification effect is considered when evaluating the cross-regional impact of natural gas scarcity risk. The results show that, at the national level, Turkey, Ukraine, and Bulgaria have significant EGSR related to exports activities. The natural gas scarcity risks (GSRs) originating from these countries are mainly transferred to Turkmenistan, Georgia, and Albania, with large EGSR imports. Moreover, by comparing the ranking changes of EGSR imports, EGSR exports, and LGSRs at the national and sectoral levels, countries or sectors with higher LGSRs also have higher EGSR exports. The Top EGSR import and export network consisting of top EGSR flow relationships can well reflect countries’ preferences in choosing EGSR transfer partners. The results suggest that upstream countries and sectors should strengthen cooperation to manage natural gas resources, and provide references for decision makers in highly vulnerable downstream countries and sectors to formulate strategies to avoid the large-scale spread of economic losses caused by natural gas scarcity.
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Lee, Soojeong, Hyeonjoon Moon, Mugahed A. Al-antari, and Gangseong Lee. "Dual-Sensor Signals Based Exact Gaussian Process-Assisted Hybrid Feature Extraction and Weighted Feature Fusion for Respiratory Rate and Uncertainty Estimations." Sensors 22, no. 21 (2022): 8386. http://dx.doi.org/10.3390/s22218386.

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Accurately estimating respiratory rate (RR) has become essential for patients and the elderly. Hence, we propose a novel method that uses exact Gaussian process regression (EGPR)-assisted hybrid feature extraction and feature fusion based on photoplethysmography and electrocardiogram signals to improve the reliability of accurate RR and uncertainty estimations. First, we obtain the power spectral features and use the multi-phase feature model to compensate for insufficient input data. Then, we combine four different feature sets and choose features with high weights using a robust neighbor component analysis. The proposed EGPR algorithm provides a confidence interval representing the uncertainty. Therefore, the proposed EGPR algorithm, including hybrid feature extraction and weighted feature fusion, is an excellent model with improved reliability for accurate RR estimation. Furthermore, the proposed EGPR methodology is likely the only one currently available that provides highly stable variation and confidence intervals. The proposed EGPR-MF, 0.993 breath per minute (bpm), and EGPR-feature fusion, 1.064 (bpm), show the lowest mean absolute error compared to the other models.
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Chen, Yingjia, and Tai L. Guo. "Dietary Early Glycation Products Promote Prostate Tumorigenesis through Modulating Macrophages." Journal of Immunology 198, no. 1_Supplement (2017): 76.2. http://dx.doi.org/10.4049/jimmunol.198.supp.76.2.

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Abstract Glycation products are ubiquitous in food. Moreover, the well-controlled glycation, that results in the production of early glycation products (EGPs), has been proposed as a strategy to improve the physicochemical properties of the food proteins. However, the health effects of EGPs are rarely known. Since there is evidence showing that Western diet (glycation prone) is associated with higher mortality of prostate patients than Prudent diet, we investigated the role of EGPs in prostate tumorigenesis. EGPs were produced from a whey protein isolate-glucose model system, with non-reacted samples (NR) and advanced glycation end-products (AGEs) as controls. They were used to gavage male C57BL6 mice, and the mice were then subcutaneously injected with TRAMP-C2 cells (a mouse prostate cancer (PCa) cell line) in the flank area. The tumor length, width, and the proliferation index were measured, and the splenic leukocytes were studied. In addition, the mouse TRAMP-C2 cells and two human PCa cell lines LNCaP and PC-3 were cultured with NR, EGPs and AGEs, and LNCaP and PC-3 were further cultured with the conditioned medium generated from human macrophages. The PCa cell proliferation, and the cytokine/chemokine production and iNOS expression by macrophages were determined. The results showed that EGPs promoted prostate tumor growth most in vivo, and PCa cell proliferation only when the presence of macrophages in vitro. In addition, EGPs activated the production of most cytokines/chemokines examined, with IL-10 and MIP-1β unregulated most, and decreased the iNOS expression in macrophage. In conclusion, EGPs promoted PCa possibly by modulating macrophages to become prostate tumor-associated M2, which produced high levels of IL-10 and MIP-1β.
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Koskinen, Tommi T., Panayotis Lavvas, Matthew J. Harris, and Roger V. Yelle. "Thermal escape from extrasolar giant planets." Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences 372, no. 2014 (2014): 20130089. http://dx.doi.org/10.1098/rsta.2013.0089.

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The detection of hot atomic hydrogen and heavy atoms and ions at high altitudes around close-in extrasolar giant planets (EGPs) such as HD209458b implies that these planets have hot and rapidly escaping atmospheres that extend to several planetary radii. These characteristics, however, cannot be generalized to all close-in EGPs. The thermal escape mechanism and mass loss rate from EGPs depend on a complex interplay between photochemistry and radiative transfer driven by the stellar UV radiation. In this study, we explore how these processes change under different levels of irradiation on giant planets with different characteristics. We confirm that there are two distinct regimes of thermal escape from EGPs, and that the transition between these regimes is relatively sharp. Our results have implications for thermal mass loss rates from different EGPs that we discuss in the context of currently known planets and the detectability of their upper atmospheres.
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Chen, Yingjia, and Tai L. Guo. "Dietary Early Glycation Products Protect Type 1 Diabetic Mice against Hyperglycemia through Altering Immune Homeostasis." Journal of Immunology 200, no. 1_Supplement (2018): 54.8. http://dx.doi.org/10.4049/jimmunol.200.supp.54.8.

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Abstract Early glycation products (EGPs) are proteins modified with reducing sugar moieties. They are generated in the first step of Maillard reaction/glycation, and are precursors for the advanced glycation end-products (AGEs). This modification enhances the physiochemical properties of proteins (e.g. solubility), and has been proposed as a strategy to improve food protein qualities. However, the health effects of EGPs are rarely known. Our previous studies suggested that EGPs are anti-inflammatory. In contrast, AGEs are pro-inflammatory, and tightly associated with aging and hyperglycemia. It was hypothesized that EGPs were protective for type 1 diabetes (T1D) through modulating the immune homeostasis. Food-borne EGPs were produced from a whey protein isolate-glucose model system. Six-week-old nondiabetic non-obese diabetic (NOD) mice were dosed with water, non-reacted samples (NR) and EGPs up for 8 wks. Body weight and blood glucose levels (BGLs) were measured weekly; diabetic incidence (BGLs > 200 mg/dL) was recorded; glucose tolerance test and insulin tolerance test were conducted monthly; sera were separated; and spleen and thymus were harvested for flow cytometry analysis of the immune cell populations. The results showed that EGP-treated NOD mice exhibited significantly lower BGLs, delayed diabetes onset, less responsive to glucose challenge, and more sensitive to insulin challenge than water and NR-treated mice. Moreover, the diabetic NOD females displayed lower or even normal BGLs after EGP treatment. The flow cytometric data showed that EGP-treated mice had a significantly higher CD4/CD8 ratio than NR-treated mice. In conclusion, EGPs protected T1D mice against hyperglycemia through altering immune balance.
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Zhang, Min-Yu, Sen-Yuan Zheng, Zheng-Yu Ru, and Zhi-Qiang Zhang. "Analysis of quality of life in patients after transgastric natural orifice transluminal endoscopic gallbladder-preserving surgery." World Journal of Gastrointestinal Endoscopy 16, no. 6 (2024): 318–25. http://dx.doi.org/10.4253/wjge.v16.i6.318.

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BACKGROUND At present, laparoscopic cholecystectomy (LC) is the main surgical treatment for gallstones. But, after gallbladder removal, there are many complications. Therefore, it is hoped to remove stones while preserving the function of the gallbladder, and with the development of endoscopic technology, natural orifice transluminal endoscopic surgery came into being. AIM To compare the quality of life, perioperative indicators, adverse events after LC and transgastric natural orifice transluminal endoscopic gallbladder-preserving surgery (EGPS) in patients with gallstones. METHODS Patients who were admitted to The First Affiliated Hospital of Xinjiang Medical University from 2020 to 2022 were retrospectively collected. We adopted propensity score matching (1:1) to compare EGPS and LC patients. RESULTS A total of 662 cases were collected, of which 589 cases underwent LC, and 73 cases underwent EGPS. Propensity score matching was performed, and 40 patients were included in each of the groups. In the EGPS group, except the gastrointestinal defecation (P = 0.603), the total score, physical well-being, mental well-being, and gastrointestinal digestion were statistically significant compared with the preoperative score after surgery (P < 0.05). In the LC group, except the mental well-being, the total score, physical well-being, gastrointestinal digestion, the gastrointestinal defecation was statistically significant compared with the preoperative score after surgery (P < 0.05). When comparing between groups, gastrointestinal defecation had significantly difference (P = 0.002) between the two groups, there was no statistically significant difference in the total postoperative score and the other three subscales. In the surgery duration, hospital stay and cost, LC group were lower than EGPS group. The recurrence factors of gallstones after EGPS were analyzed: and recurrence was not correlated with gender, age, body mass index, number of stones, and preoperative score. CONCLUSION Whether EGPS or LC, it can improve the patient’s symptoms, and the EGPS has less impact on the patient’s defecation. It needed to, prospective, multicenter, long-term follow-up, large-sample related studies to prove.
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Kiehl, Peter, Katrin Falkenberg, Markus Vogelbruch, and Alexander Kapp. "Quantification of Eosinophilic Granule Protein Deposition in Biopsies of Inflammatory Skin Diseases by Automated Image Analysis of Highly Sensitive Immunostaining." Analytical Cellular Pathology 19, no. 3-4 (1999): 153–62. http://dx.doi.org/10.1155/1999/735075.

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Eosinophilic granulocytes are major effector cells in inflammation. Extracellular deposition of toxic eosinophilic granule proteins (EGPs), but not the presence of intact eosinophils, is crucial for their functional effect in situ. As even recent morphometric approaches to quantify the involvement of eosinophils in inflammation have been only based on cell counting, we developed a new method for the cell‐independent quantification of EGPs by image analysis of immunostaining. Highly sensitive, automated immunohistochemistry was done on paraffin sections of inflammatory skin diseases with 4 different primary antibodies against EGPs. Image analysis of immunostaining was performed by colour translation, linear combination and automated thresholding. Using strictly standardized protocols, the assay was proven to be specific and accurate concerning segmentation in 8916 fields of 520 sections, well reproducible in repeated measurements and reliable over 16 weeks observation time. The method may be valuable for the cell‐independent segmentation of immunostaining in other applications as well.
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Samaniego, Jorge X., José L. Pesantez, Luis E. Ayala, et al. "Effects of Follicular Fluid and Serum Supplementation on Cumulus Cell Expansion and Nuclear Progression of Guinea Pig Oocytes, Using a Baseline Medium Established with Bovine Oocytes." Animals 15, no. 5 (2025): 666. https://doi.org/10.3390/ani15050666.

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This study evaluated the effects of serum (egpS) and follicular fluid (egpFF) from estrus guinea pigs as in vitro maturation (IVM) supplements for natural cycle guinea pig oocytes. Two experiments were conducted: the first assessed three IVM media, a commercial medium (CMOM) and two homemade media (HMOM-P and HMOM-S), for oocyte in vitro maturation using 615 bovine oocytes, while the second evaluated the incorporation of 5%, 10%, and 20% egpFF or egpS into IVM media for 1744 guinea pig oocytes. Initially, we optimized the IVM base medium using bovine oocytes to determine the most suitable culture conditions. The results obtained from these experiments served as a critical foundation for subsequent supplementation trials conducted with guinea pig oocytes. The oocytes were cultured in 70 μL drops under controlled atmospheric conditions, and maturation rates were assessed based on cumulus cell expansion and nuclear progression. The HMOM-S medium significantly enhanced cumulus cell expansion (72.5 ± 2.88%) compared with the CMOM medium (57.7 ± 5.33%; p < 0.05). Supplementation with egpFF at 5% (68.8 ± 6.22%), 10% (76.3 ± 5.39%), and 20% (80.9 ± 6.22%) significantly improved both cumulus cell expansion and nuclear progression in high-quality oocytes (types A and B), compared to the control group (43.3 ± 4.82%). Conversely, supplementation with egpS did not have a significant effect on cumulus cell expansion (p > 0.05); however, it notably improved nuclear maturation in low-quality oocytes (type C) at concentrations of 10% and 20% (p < 0.05). This resulted in an overall improvement in maturation outcomes, particularly for oocytes with compromised initial quality. These findings demonstrated that the IVM of guinea pig oocytes using HMOM-S medium was significantly enhanced by the presence of egpFF, whereas egpS supplementation exhibited a less pronounced effect on IVM outcomes.
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Hietala, A. W., S. R. Humphreys, R. Z. Arkiszewski, B. T. Hunt, and S. Morris. "Self-Shielded Quad-Band EGPRS Transceiver With Spur Avoidance." IEEE Transactions on Microwave Theory and Techniques 57, no. 4 (2009): 910–18. http://dx.doi.org/10.1109/tmtt.2009.2014431.

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Dissertations / Theses on the topic "EGPSR"

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Adolfsson, Klas. "TCP performance in an EGPRS system." Thesis, Linköping University, Department of Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-10306.

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<p>The most widely used protocol for providing reliable service and congestion control in the Internet is the Transmission Control Protocol (TCP). When the Internet is moving towards more use in mobile applications it is getting more important to know how TCP works for this purpose.</p><p>One of the technologies used for mobile Internet is the Enhanced General Packet Radio Service (EGPRS) extension to the popular GSM system. This thesis presents a low-level analysis of TCP performance in an EGPRS system and an overview of existing TCP, GSM and EGPRS technologies.</p><p>The bottleneck in an EGPRS system is the wireless link – the connection between the mobile phone and the GSM base station. The data transfer over the wireless link is mainly managed by the complex RLC/MAC protocol.</p><p>In this thesis, simulations were made to identify some problems with running TCP and RLC/MAC together. The simulations were made using existing EGPRS testing software together with a new TCP module. The simulation software is also briefly described in the thesis.</p><p>Additionaly, some suggestions are given in order to enhance performance, both by changing the EGPRS system and by modifying the TCP algorithms and parameters.</p>
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Seddigh, Sorosh. "Link QualityControl (LQC) i GPRS/EGPRS." Thesis, Linköping University, Department of Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-1761.

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<p>This master thesis has been done at Enea Epact AB. The purpose of this thesis is to develop and implement a Link Quality Control algorithm for GPRS/EPGRS in the current testing tool. A Link Quality Control (LQC) shall take quality values from mobile stations and base stations and decide a codingsscheme that opimizes the throughput of data. </p><p>The Advantage with LQC is that it adapts the used coding scheme to the channel quality. If the channel quality is too bad for the used coding scheme, a slower coding scheme with more redundancy should be selected. On the other hand, if the channel quality is too good for the used coding scheme, LQC should recommend a faster coding scheme with less redundancy. </p><p>The testing tool is now using a static coding schme that doesn’t change during a data session. An LQC is therefore necessary for better simulation of the traffic and to make the tests more real.</p>
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Gulmez, Baskoy Ulku. "A Turbo Detection Scheme For Egprs." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1259415/index.pdf.

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Enhanced Data Rates for Global Evolution (EDGE) is one of the 3G wireless communication standards, which provides higher data rates by adopting 8-PSK modulation in TDMA system infrastructure of GSM. In this thesis, a turbo detection receiver for Enhanced General Packet Radio Services (EGPRS) system, which is the packet switching mode of EDGE, is studied. In turbo detection, equalization and channel decoding are performed iteratively. Due to 8-ary alphabet of EGPRS modulation, full state trellis based equalization, as usually performed in GSM, is too complex not only for turbo detection but even for conventional equalization<br>so suboptimum schemes have to be considered. The Delayed Decision Feedback Sequence Estimation (DDFSE) is chosen as suboptimal and less complex trellis based scheme and it is examined as a conventional equalization technique firstly. It is shown that the DDFSE has a fine tradeoff between performance and complexity and can be a promising candidate for EGPRS. Then it is employed to reduce the number of the trellis state in turbo detection. Max-log-MAP algorithm is used for soft output calculations of both SISO equalizer and SISO decoder. Simulation results illustrate that proposed turbo detection structure improves bit error rate and block error rate performance of the receiver with respect to the conventional equalization and decoding scheme. The iteration gain varies depending on modulation type and coding rate of Modulation Coding Scheme (MCS) employed in EGPRS.
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Jin, Chengzhou. "Discrete Cosine Transform for Pre-coded EGPRS." Thesis, KTH, Signalbehandling, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-98761.

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Due to the rapid growth of wireless multimedia service, new features such as improved spectral efficiency, latency and increased peak throughput are standardized in the current GSM/EDGE system. Higher order modulations and symbol rates are defined in Enhanced General Packet Radio Service phase 2 (EGPRS2) to achieve better throughput. However, the computational complexity in the traditional receiver can be very high when increased modulation orders are applied; additionally, the system becomes more sensitive to the impairments at an increased symbol rate. It is therefore desirable to have a less complex and more robust demodulator. Recently, a new study item which introduces the multi-carrier technique was proposed in the 3rd Generation Partnership Project (3GPP) standardization. Based on the channel partitioning using the Discrete Fourier Transform (DFT), a simple equalizer can be used, which greatly reduces the computational complexity on receiver, meanwhile achieves good throughput and robustness against impairments. In this thesis, another channel partitioning method by means of the Discrete Cosine Transform (DCT) is studied. Transmitter and receiver algorithms are developed, including a pre-filter designed at the receiver to facilitate the channel diagonalization. The link level performance is evaluated by means of simulations, under different test scenarios. The system’s robustness against impairments and peak-to-average ratio (PAR) reduction are also evaluated, and compared with a system based on the DFT pre-coding. From the simulations, the conclusions can be drawn that in this implementation, the DFT precoded EGPRS2 outperforms the DCT pre-coded EGPRS2 in all scenarios. The DCT pre-coded system also shows worse robustness against impairments and higher peak-to-average ratio reduction loss in throughput. The impact of pre-filter design on the DCT pre-coded system has also been analyzed, and it shows that there is a tradeoff between achieving good symmetrization, and preserving channel information in the frequency domain.
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Eriksson, Hans. "Output Power Calibration Methods for an EGPRS Mobile Platform." Thesis, Linköping University, Department of Electrical Engineering, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-2023.

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<p>This thesis deals with output power calibration of a mobile platform that supports EGPRS.Two different topics are examined. First some different measurement methods are compared concerning cost efficiency, accuracy, and speed and later measurements are carried out on a mobile platform. </p><p>The output power from the mobile platform is controlled by three parameters and the influence on the output power when varying those parameters is investigated and presented. Furthermore, two methods of improving the speed of the calibration are presented. </p><p>The first one aims to decrease the number of bursts to average over as much as possible. The conclusion is that 10-20 bursts are enough for GMSK modulation and about five bursts for 8PSK modulation. The purpose of the second investigation is to examine the possibility to measure the output power in one modulation and frequency band, and then calculate the output power in the other bands. The conclusion in this case is that, based on the units investigated, it is possible for some values of the parameters and in some frequency bands. However, more units need to be included in the basic data for decision-making and it is possible that the hardware variation is too large.</p>
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Fornefeld, Ulrich. "Radio resource control performance of the mobile data service EGPRS /." Aachen : Mainz, 2007. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=016494100&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.

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SANTOS, LUIS CLAUDIO DOS. "ANALYSIS OF THE VOICE TRANSMISSION ON PACKET MODE OVER EGPRS NETWORKS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2006. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=8658@1.

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PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO<br>Atualmente, há uma demanda crescente por serviços que exploram a integração entre as tradicionais redes de pacotes (como a Internet) e as redes celulares de última geração. Além das aplicações que visam ao transporte de dados em si, há linhas de pesquisa no sentido de oferecer serviços de voz sobre IP em redes celulares, ou seja, explorando o paradigma da transmissão de voz em pacotes. Uma destas aplicações é o Push to Talk over Cellular, ou PoC, serviço no qual, durante uma sessão, apenas um usuário por vez pode falar em modo half duplex. No PoC, assim como em toda aplicação baseada em voz sobre IP, o atraso fim-a-fim, a variação do atraso (jitter) e as taxas de perdas (além de outros fatores) influenciam a qualidade da recepção da voz nos extremos finais da comunicação. Os resultados aqui apresentados estão focados no requisito de atraso fim-a-fim dos pacotes de voz, cujos valores variam dependendo do tamanho destes pacotes, do número de usuários por canal e, principalmente, das condições do meio (razão C/I). Também são apresentados resultados referentes às simulações que validaram o modelo da rede EGPRS, mais especificamente, referentes às características da interface aérea baseada no EDGE. Durante as simulações, considerou-se que os canais eram dedicados às sessões PoC, isto é, sem nenhuma espécie de tráfego concorrente.<br>Nowadays, there is a increasing demand for services that join traditional packet data networks (like Internet) and last generation cellular systems. Besides applications based on data only, there are researches about offer services of voice calls in cellular networks based on packet switched transmission mode. One of that is Push to Talk over Cellular, or PoC, that is a real-time service based on delivery of voice traffic in packets between two or more parties in a half duplex way. Like traditional VoIP services, the end-to-end delay, the jitter and the lost rates can affect the transmission and reception of the voice between the extremes of the communication. The results are focused on end-to-end delay of the voice packets in a PoC session, whose values can change drasticly depending on the size of the packets, the number of users sharing a channel and, mainly, the conditions of the medium (C/I rates). The model used for the EGPRS network, in special, the EDGE air interface, is studied by simulations and the results are presented and analysed too. This work presents a mean of estimating the capacity of EGPRS/EDGE channels of supporting PoC sessions without considering any other type of traffic.
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Dailly, Nicolas. "Optimisation des réseaux d'accès mobiles pour les systèmes EGPRS et B3G." Paris, ENST, 2007. http://www.theses.fr/2007ENST0008.

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Cette thèse étudie différentes problématiques qui visent à améliorer la qualité de service offerte aux utilisateurs et à mettre en oeuvre des mécanismes de handover performants dans les réseaux E-GPRS. La première partie étudie différents mécanismes d'allocation dynamique de ressources sur l'interface Abis. Ces mécanismes doivent permettre le déploiement de la technologie E-GPRS tout en préservant la structure de l'interface Abis existante. La seconde partie analyse différentes approches de handover pouvant être mises en oeuvre pour assurer la mobilité des utilisateurs dans les réseaux E-GPRS. Nous formulons plusieurs propositions pour améliorer les performances du basculement et mettre en place un véritable handover. Nous présentons les évolutions récentes de la normalisation, puis exposons nos résultats qui permettent de comparer les performances des différents mécanismes. La troisième partie s'intéresse aux handover inter-systèmes. Nous analysons le passage d'une station de base E-GPRS à un point d'accès WIFI intégré au réseau d'accès mobile. Nous analysons également les mécanismes à mettre en place pour le transfert de données en mode Streaming. Nos résultats montrent les bénéfices apportés par l'introduction d'une couche de convergence au niveau liaison de données. La quatrième partie étudie les mécanismes de compression qui peuvent être mis en oeuvre pour réduire la taille des messages de signalisation SIP. Cette étude vise à réduire le temps de transmission de la signalisation – à travers des bearer bas débit – et à économiser l'utilisation des ressources radio<br>This thesis studies several problems to improve the quality of service offered to subscribers and to set up handover mechanisms. The first part deals with dynamic resources allocation mechanisms for the Abis interface. These mechanisms must allow the deployment of the E-GPRS technology, while preserving the existing Abis structure. The second part analyzes various handover approaches which can be set up to allow user mobility in the E-GPRS networks. We introduce several proposals to improve reselection performances and to set up a real handover. We details recent evolutions of the standardization, then we expose our results which allow to compare performances of the various studied mechanisms. The third part deals with inter-systems handovers. We analyze the terminal transfer from an E-GPRS base station to a WIFI access point integrated to the mobile access network. We also study the performances of several handover mechanisms which can be used in case of streaming traffic. Our results show the benefits offered by the introduction of a convergence layer at LLC level. The fourth part studies compression mechanisms which can be set up to reduce the size of SIP signalization messages. The aim of this study is to reduce the signalization transmission delays - through low data rate bearers - and to reduce the use of radio resources
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Dailly, Nicolas. "Optimisation des réseaux d'accès mobiles pour les systèmes EGPRS et B3G /." Paris : École nationale supérieure des télécommunications, 2007. http://catalogue.bnf.fr/ark:/12148/cb41198319t.

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Santana, Aguiar Elisangela. "O uso do EDGE nos sistemas celulares em direção à 3ª geração." Universidade Federal de Pernambuco, 2002. https://repositorio.ufpe.br/handle/123456789/2570.

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Made available in DSpace on 2014-06-12T15:59:19Z (GMT). No. of bitstreams: 2 arquivo5031_1.pdf: 3343228 bytes, checksum: 5473b22f6502ccef2e12e259b590641d (MD5) license.txt: 1748 bytes, checksum: 8a4605be74aa9ea9d79846c1fba20a33 (MD5) Previous issue date: 2002<br>Atualmente o mercado das comunicações móveis está sendo dirigido pela necessidade dos serviços de dados. Entre os sistemas da primeira e segunda geração (1G e 2G), o GSM (Global System Mobile) é indiscutivelmente o mais utilizado no mundo para aplicações de voz, porém, continua oferecendo serviços de dados com baixas taxas de transmissão, as quais em paralelo com as baixas capacidades dos sistemas, são os principais problemas do progresso da multimídia móvel. Além disso, os serviços de dados são caracterizados pela necessidade de grandes larguras de banda. Sendo assim, o GSM que originalmente foi desenvolvido para transmissão de voz e serviços de dados com baixas taxas, está rapidamente sendo atualizado para incorporar novos serviços multimídia. Na sua geração intermediária 2,5G, com o HSCSD (High Speed Circuit Switching Service Data) e o GPRS (General Packet Radio Service), possuirão suas taxas de dados aumentadas em três vezes com a introdução de suas versões melhoradas, ECSD (Enhanced Circuit Switched Data) e EGPRS (Enhanced GPRS), juntos esses dois sistemas são denominados de EDGE (Enhanced Data Rate for Global Evolution). O EDGE utilizará uma modulação de alto nível denominada 8PSK (8 Phase Shift Keying) em conjunto com a GMSK (Gaussian Minimum Shift Keying), utilizada pelo GPRS, também usará esquemas de codificação mais eficientes e mecanismos de controle de qualidade do link, IR (Incremental Redundancy) e LA (Link Adaptation), os quais trazem benefícios quando utilizados em boas condições de propagação. Este trabalho trata da evolução dos serviços de dados, em especial da 2,5G, concentrando-se no estudo do EDGE, mais especificamente do EGPRS, com a abordagem dos seus principais aspectos e características. Foram realizados estudos considerando as alocações single e multislot, suas especificações, para a transmissão de diferentes modelos de dados, Funet, Railway e Mobitex, entre PCU (Packet Control Unit) e MSs (Mobile Stations). Desenvolveu-se um protótipo com o objetivo de simular esse nível de abstração e testar um algoritmo para a otimização das alocações, de forma a permitir o melhor estudo e a análise do desempenho do sistema
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Books on the topic "EGPSR"

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M, Mather Paul, and Coope Sebastian, eds. Convergence technologies for 3G networks: IP, UMTS, EGPRS, and ATM. Wiley, 2004.

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Heine, Gunnar. Egprs: Design Details & System Engineering. Artech House Publishers, 2003.

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Bannister, Jeffrey, Sebastian Coope, and Paul Mather. Convergence Technologies for 3G Networks: IP, UMTS, EGPRS and ATM. Wiley & Sons, Incorporated, John, 2004.

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Bannister, Jeffrey, Sebastian Coope, and Paul Mather. Convergence Technologies for 3G Networks: IP, UMTS, EGPRS and ATM. Wiley & Sons, Incorporated, John, 2007.

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Bannister, Jeffrey, Sebastian Coope, and Paul Mather. Convergence Technologies for 3G Networks: IP, UMTS, EGPRS and ATM. Wiley & Sons, Incorporated, John, 2004.

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Heine, Gunnar. Umts, Egprs And Gsm: Updates With Release 99, 4 And 5. Artech House Publishers, 2005.

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Book chapters on the topic "EGPSR"

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Jafari, Mehdi, and Shohreh Kasaei. "Prioritisation of Data Partitioned MPEG-4 Video over GPRS/EGPRS Mobile Networks." In Lecture Notes in Computer Science. Springer Berlin Heidelberg, 2005. http://dx.doi.org/10.1007/11599593_6.

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Leung, Kin K., Peter F. Driessen, Kapil Chawla, and Xiaoxin Qiu. "Performance Improvement for Streaming Services by Link Adaptation & Power Control in EGPRS Wireless Networks." In Multiaccess, Mobility and Teletraffic in Wireless Communications: Volume 5. Springer US, 2000. http://dx.doi.org/10.1007/978-1-4757-5916-7_18.

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"EGPRS: GPRS/EDGE." In Introduction to Mobile Network Engineering. John Wiley & Sons Ltd, 2018. http://dx.doi.org/10.1002/9781119484196.ch8.

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"GSM and EGPRS." In Cellular Technologies for Emerging Markets. John Wiley & Sons, Ltd, 2010. http://dx.doi.org/10.1002/9780470666234.ch2.

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Kovačević, Ahmed. "Creativity and Innovation in Educating Engineers and Product Designers of the 21st Century for the Fourth Industrial Revolution." In Advances in Business Information Systems and Analytics. IGI Global, 2020. http://dx.doi.org/10.4018/978-1-7998-2725-2.ch025.

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Industry 4.0 is the trend towards automation and data exchange in manufacturing technologies and processes. It requires engineers and product designers trained for the challenge. Collaborative design in virtual environment (CODEVE) is a teaching methodology developed for this within the European Global Product Realization (EGPR) course since early 2000. Each year, an academic virtual enterprise of participating European universities and an industrial partner is formed, and students distributed in international teams. Educational and project tasks are performed through virtual communication tools. The CODEVE methodology was tested on design of consumer products, service-driven products, and industrial machinery. Its evaluation was supported by the Erasmus+ funded project called Networked Activities for Realization of Innovative Products (NARIP) from 2015-2017. As explained in this chapter, it enables students to work for industry, encourages them to understand and explore methods related to Industry 4.0, and helps them to overcome barriers of distributed environment.
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Vukašinović, Nikola, Janez Benedičič, and Roman Žavbi. "Evolution of Communication Skills in Virtual Product Development Process: Experience From EGPR." In Harnessing Knowledge, Innovation and Competence in Engineering of Mission Critical Systems. IntechOpen, 2020. http://dx.doi.org/10.5772/intechopen.90059.

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Conference papers on the topic "EGPSR"

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Mzyece, M. "Packet combining strategies for EGPRS." In 5th European Personal Mobile Communications Conference 2003. IEE, 2003. http://dx.doi.org/10.1049/cp:20030285.

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Singh, Baljinder, and Tejpreet Singh. "Modified EGSR for network security." In 2017 51st Annual Conference on Information Sciences and Systems (CISS). IEEE, 2017. http://dx.doi.org/10.1109/ciss.2017.7926098.

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Afif, Meriem, Philippe Martins, Sami Tabbane, and Philippe Godlewski. "SCTP Extension for EGPRS/WLAN Handover Data." In 2006 31st IEEE Conference on Local Computer Networks. IEEE, 2006. http://dx.doi.org/10.1109/lcn.2006.322031.

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Hietala, Alex W., Scott R. Humphreys, Ray Arkizewski, and Scott Morris. "(Invited) Self-shielded quad-band EGPRS transceiver." In 2008 IEEE Radio Frequency Integrated Circuits Symposium. IEEE, 2008. http://dx.doi.org/10.1109/rfic.2008.4561374.

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Molkdar, D. "Impact of imperfect link adaptation in EGPRS." In Second International Conference on 3G Mobile Communication Technologies (3G 2001). IEE, 2001. http://dx.doi.org/10.1049/cp:20010056.

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Tavares, F., R. Iida, R. Vieira, and R. Paiva. "Improving EGPRS Capacity using Orthogonal Sub Channels (OSC)." In VII International Telecommunications Symposium. Sociedade Brasileira de Telecomunicações, 2010. http://dx.doi.org/10.14209/sbrt.2010.118.

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Afif, Meriem, Philippe Martins, Sami Tabbane, and Philippe Godlewski. "Radio Aware SCTP Extension for Handover Data in EGPRS." In 2006 IEEE 17th International Symposium on Personal, Indoor and Mobile Radio Communications. IEEE, 2006. http://dx.doi.org/10.1109/pimrc.2006.254287.

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Hausmann, Kurt, Jeff Ganger, Mark Kirschenmann, et al. "A SAW-less CMOS TX for EGPRS and WCDMA." In 2010 IEEE Radio Frequency Integrated Circuits Symposium. IEEE, 2010. http://dx.doi.org/10.1109/rfic.2010.5477357.

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Ramesh, R., Huseyin Arslan, Abdulrauf Hafeez, and Dennis Hui. "Single Antenna Interference Cancellation for 8PSK Signals in EGPRS." In 2009 IEEE 69th Vehicular Technology Conference Spring. IEEE, 2009. http://dx.doi.org/10.1109/vetecs.2009.5073852.

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Maciel, Tarcisio F., Raimundo A. O. Neto, Waltemar M. de Sousa Jr., Francisco R. P. Cavalcanti, and Yuri C. B. Silva. "Estimating the QoS Enhancement using Power Control in EGPRS." In 2002 International Telecommunications Symposium. Sociedade Brasileira de Telecomunicações, 2002. http://dx.doi.org/10.14209/its.2002.1016.

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