在全IP无线互联网包分多址(PDMA)系统中,移动用户可以通过简单IP或移动IP两种接入方式接入Internet。如何对以上两种接入方式的用户提供基于RADIUS协议的身份认证、授权及基于流量方式的计费功能,是PDMA系统面临的一个重要问题。文章提出了支持微移动和宏移动两层协议体系分别进行AAA机制处理,以及两层AAA机制间有效协调的设计方案,在某地试验网的实际运行中取得了良好的效果。
王玉辉, 黄传河, 陈莺
doaj
Perfluoroarene‐Based Tin Halide Perovskite Photovoltaics
Hybrid halide perovskites are among the most promising candidates for next‐generation photovoltaics. The most investigated perovskite solar cells are lead based, which poses environmental concerns, making finding sustainable alternatives a pressing issue.
Mengqiong Zhu +17 more
doaj +1 more source
A permeated hydrogen monitoring method based on poly(2,5-dimethoxyaniline) hydrogenochromic films
The real-time detection of hydrogen permeation presents a critical challenge in maintaining structural integrity of energy infrastructure exposed to hydrogen environments. We demonstrate an innovative hydrogen-responsive sensing platform employing nickel-
Tian Yuan +4 more
doaj +1 more source
Polarization division multiple access with polarization modulation for LOS wireless communications
In this paper, we discuss a potential multiple access and modulation scheme based on polarized states (PS) of electromagnetic (EM) waves for line-of-sight (LOS) communications. The proposed scheme is theoretic different from the existing polar modulation
Cao Bin, Zhang Qin-Yu, Jin Lin
doaj
Blind Device Detection via Extended Sparsity Estimation-OMP in Grant-Free NOMA-IoT. [PDF]
Andini N +3 more
europepmc +1 more source
Buffer and Polymer Molecular Weight Affect Zinc Myoglobin-Mediated PET-RAFT Polymerizations. [PDF]
Anderson IC +4 more
europepmc +1 more source
Pyroglutamate pendant block copolymers: evolution of inverse and conventional morphologies from RAFT-mediated PISA. [PDF]
Chowdhury P, Bauri K, De P.
europepmc +1 more source
Crystalline Dion-Jacobson 2D Layered Sn-Based Perovskites for Field-Effect Transistors. [PDF]
Ling Z +14 more
europepmc +1 more source
Mechanosynthesis of Layered Double Perovskites with Aromatic Spacer Cations for Lead-Free Thin-Film Opto(electro)ionics. [PDF]
Ghasemi M +9 more
europepmc +1 more source
Prediction-Guided Biotransformation of <i>p</i>-Hydroxyphenethyl Anisate into a Novel 3',4'-Dihydroxyphenethyl Anisate with Potent Anti-Inflammatory, Anti-Melanoma, and Antioxidant Activities. [PDF]
Wu CY +8 more
europepmc +1 more source

