论文标题

从语义通信到语义意识网络:模型,体系结构和开放问题

From Semantic Communication to Semantic-aware Networking: Model, Architecture, and Open Problems

论文作者

Shi, Guangming, Xiao, Yong, Li, Yingyu, Xie, Xuemei

论文摘要

现有的通信系统主要是基于香农的信息理论而构建的,该理论故意忽略了交流的语义方面。所谓的5G及以后的无线技术的最新迭代有望通过基于内容,需求和语义的精心量身定制的网络功能来支持大量服务。这对语义交流引发了极大的兴趣,这是一种涉及信息含义到交流的新颖范式。在本文中,我们首先回顾了经典的语义交流框架,然后总结了阻碍其受欢迎程度的关键挑战。我们观察到,某些语义通信过程,例如语义检测,知识建模和协调,可能是资源消耗和效率低下的,尤其是对于单个来源和目的地之间的通信。因此,我们提出了一种基于联合边缘智能的新型体系结构,以支持资源有效的语义感知网络。我们的架构使每个用户可以通过中间结果通过中间结果进行协调,将计算密集的语义编码和解码任务卸载到边缘服务器并保护其专有模型相关信息。我们的仿真结果表明,所提出的架构可以减少资源消耗并大大提高沟通效率。

Existing communication systems are mainly built based on Shannon's information theory which deliberately ignores the semantic aspects of communication. The recent iteration of wireless technology, the so-called 5G and beyond, promises to support a plethora of services enabled by carefully tailored network capabilities based on the contents, requirements, as well as semantics. This sparkled significant interest in the semantic communication, a novel paradigm that involves the meaning of message into the communication. In this article, we first review the classic semantic communication framework and then summarize key challenges that hinder its popularity. We observe that some semantic communication processes such as semantic detection, knowledge modeling, and coordination, can be resource-consuming and inefficient, especially for the communication between a single source and a destination. We therefore propose a novel architecture based on federated edge intelligence for supporting resource-efficient semantic-aware networking. Our architecture allows each user to offload the computationally intensive semantic encoding and decoding tasks to the edge servers and protect its proprietary model-related information by coordinating via intermediate results. Our simulation result shows that the proposed architecture can reduce the resource consumption and significantly improve the communication efficiency.

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