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Volume 47 期 4，2026 2026年第47卷第4期

  • Papers

    Chen Yiqi, Dong Chen, Luo Yuan

    DOI：10.11959/j.issn.1000-436x.2026070
    摘要：To achieve reliable and secure communication over a channel in presence of a jammer and an eavesdropper, in which the encoder observed the jamming signal before transmitting each input symbol, a coding scheme was proposed, and the fundamental limits of the communication system was studied. The proposed coding scheme encoded each message using the observed jamming signal and was constructed as a code for reliable and secure communication over compound channels. Then, a set of random permutations over the codewords was used and the compound channel code was transformed into a code that could achieve reliable and secure communication over channels against arbitrarily varying jamming signals. A lower bound of the strong secrecy communication rate has been established. By analyzing the code over channels whose main channel is severely less noisy than the wiretap channel, the strong secrecy capacity of the channel is established and the proposed coding scheme is the optimal scheme.  
    关键词：arbitrarily varying channel;wiretap channel;strong secrecy communication;reliable communication;causal state information   
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    更新时间：2026-04-20

    Xing Ruopeng, Guo Shaoyong, Qiu Xuesong, Hao Jiakai, Li Yuting

    DOI：10.11959/j.issn.1000-436x.2026079
    摘要：In response to the demand for high flexibility and high-performance network services for large-scale and diversified business applications in cloud-edge-end scenarios, a service function chain orchestration mechanism on embedded data processing units was proposed. Firstly, an architecture of service function chain on embedded data processing units was proposed to address the issue of traditional service function chains being unable to balance high flexibility and high-speed processing. Secondly, in response to the heterogeneous resources requirement of service functions under this architecture, a service function chain deployment problem was formulated by comprehensively incorporating resource occupancy, hardware accelerator utilization, end-to-end latency, and deployment response time. To solve this problem, a service function chain deployment method based on the genetic particle swarm optimization algorithm was developed, and the process of dividing sub chains and merging similar requests was designed to improve the speed of the proposed method. Simulation results show that, compared with other methods, the proposed method provides better service function chain deployment decisions and has a faster decision-making speed.  
    关键词：service function chain;service function chain deployment;cloud-edge-end network;data processing unit;genetic particle swarm optimization algorithm   
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    更新时间：2026-04-20

    Li Jingjing, Wang Jianhui, Liu Lihao, Zhang Yanyu, Hu Nan

    DOI：10.11959/j.issn.1000-436x.2026081
    摘要：To address the limited positioning accuracy of reconfigurable intelligent surface (RIS)-aided system in multipath environments, a high-precision localization algorithm based on RIS substructures was proposed. A single RIS was divided into multiple substructures, and time-sequential orthogonal coding was applied to each substructure, enabling the reflected signal components from different substructures to be accurately separated at the receiver through orthogonal decoding. In this way, a single RIS was made equivalent to multiple virtual anchor points, and the spatial observation dimension of the system was significantly improved under a single RIS and single antenna configuration. On this basis, a compressed-sensing-based direct localization framework was constructed using an angle-domain signal model. An observation dictionary was established according to the geometric mapping relationship between candidate positions and the substructures, and the target was directly estimated in the position domain, thereby avoiding the cascaded errors introduced by the estimation of intermediate parameters, such as the angle of arrival (AoA), in conventional two-step methods. By jointly exploiting the consistency constraint of the target position and the sparsity of multipath components, the target path was effectively distinguished from multipath interference. Simulation results show that the proposed algorithm exhibits good robustness in complex multipath environments, achieves sub-meter-level positioning accuracy, and provides a new solution for low-cost and high-precision positioning aided by RIS.  
    关键词：positioning;reconfigurable intelligent surface;multipath environment;compressed sensing   
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    更新时间：2026-04-20

    Wei Wenjie, Wang Jianping, Chen Bin, Lin Fuhong

    DOI：10.11959/j.issn.1000-436x.2026078
    摘要：The security of controller area network (CAN) bus is increasingly challenged by volatile and non-stationary communication patterns in modern vehicles, which traditional static detection methods have failed to capture. ES-DyGNN, an exponentially smoothed dynamic graph neural network, was proposed to capture the evolving relationships between electronic control unit (ECU). Unlike heuristic dynamic models, this method was underpinned by a rigorous exponential smoothing graph operator that adaptively captured topological shifts. Closed form expansions for the dynamic adjacency sequences were derived and Frobenius norm convergence bounds that characterized the stability of the model were established. Furthermore, a theoretical lower bound on attack persistence was proven, ensuring subtle injections were detectable despite noise. Additionally, the model employed sinusoidal time embeddings and edge-conditional attention to weigh both feature similarity and transition frequencies during message passing. Through extensive evaluations on benchmark datasets, it was demonstrated that an accuracy of over 99% was achieved by ES-DyGNN, while an inference latency of less than 0.14 ms for each window was sustained. Through both rigorous theoretical analysis and extensive experimental validation, the proposed method demonstrates the feasibility of topology adaptation for automotive security.  
    关键词：CAN bus intrusion detection;dynamic graph neural network;exponential smoothing;vehicular security   
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    更新时间：2026-04-20

    Wang Xiaofeng, Ye Jun, Liu Wenzheng, Sun Bing, Wu Huahui, Guo Jiapu

    DOI：10.11959/j.issn.1000-436x.2026080
    摘要：Existing format-preserving encryption algorithms were vulnerable to slide attack and linear cryptanalysis attack, and had low efficiency. A finite radix oriented format-preserving encryption (FR-FPE) algorithm was proposed. It designed a CBC mode based on initial vector encryption mechanism and a fully associated encryption model with structured tweak parameters, which could effectively defend against slide attack and linear cryptanalysis attack. A lightweight and deterministic encryption structure was designed to support plaintexts up to 192 bit and tweak parameters up to 96 bit. While ensuring the same security strength as NIST FF1, the number of block encryption calls was reduced by 45% (9 times) compared with FF1. Based on the Game-Hopping game model, the security proof of strong pseudorandom permutation (SPRP) for the FR-FPE algorithm was given, and the ability of the algorithm to resist sliding attacks and linear cryptanalytic attacks was quantitatively analyzed. Experimental results show that for a mixed alphanumeric dataset with radix=36, FR-FPE achieves an average increase of 26.55% in encryption times per second and 21.25% in encrypted data throughput compared to FF1.  
    关键词：format-preserving encryption;slide attack;linear cryptanalysis attack;SPRP   
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    更新时间：2026-04-20
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Authorized by: China Association for Science and Technology
Sponsored by: China Institute of Communications、Posts & Telecom Press
Editor-in-Chief: Zhang Ping
Associate Editor-in-Chief:
Zhang Yanchuan, Ma Jianfeng, Yang Zhen, Shen Lianfeng, Tao Xiaofeng, Liu Hualu
Editorial Director: Wu Nada, Zhao Li
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ISSN(print) 1000-436X
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