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2022 IEEE/CIC International Conference on Communications in China (ICCC Workshops)最新文献

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Supervised Learning-Based Joint Active and Passive Beamforming for IRS-Assisted NOMA Systems 基于监督学习的红外辅助NOMA系统联合主动和被动波束形成
Pub Date : 2022-08-11 DOI: 10.1109/ICCCWorkshops55477.2022.9896673
Qiang Sun, Haoyu You, Hongwu Liu
In non-orthogonal multiple access (NOMA) systems, intelligent reflecting surfaces have been a promising candidate. In this paper, we aim to create a backpropagated Levenberg-Marquardt Algorithm assisted supervised learning network (LMA-SLN) for increasing the achievable sum-rate of the IRS-assisted uplink NOMA system. Firstly, we use the alternating optimization algorithm to achieve the theoretical optimal active and passive beamforming, and then, we utilize the proposed network to optimize the beamforming to improve the achievable communication rate. The experimental results show that our proposed LMA-SLN method has a great performance in optimizing beamforming to increase the achievable rate.
在非正交多址(NOMA)系统中,智能反射面是一个很有前途的选择。在本文中,我们旨在创建一个反向传播的Levenberg-Marquardt算法辅助监督学习网络(LMA-SLN),以提高irs辅助上行NOMA系统的可实现求和速率。首先利用交替优化算法实现理论最优的主动式和被动波束形成,然后利用所提出的网络对波束形成进行优化,以提高可实现的通信速率。实验结果表明,本文提出的LMA-SLN方法在优化波束形成以提高可达率方面具有良好的性能。
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引用次数: 0
Performance analysis of Spectrum Sensing based on Distributed Satellite Clusters 基于分布式卫星集群的频谱感知性能分析
Pub Date : 2022-08-11 DOI: 10.1109/ICCCWorkshops55477.2022.9896718
Yunfeng Wang, Xiaojin Ding, Jun Li, T. Hong, Gengxin Zhang
This paper investigates the spectrum sensing performance of a distributed satellite clusters (DSC), where the sensing signals received by each cooperative satellite can be fused at the signal-level to enhance the sensing ability of weak signals. In particular, by assuming that the satellite-relay link undergoes shadowed-Rician (SR) fading, we first derive a closed-form expression for correct detection probability $(P_{d})$ of the considered system with maximum ratio combining (MRC). However, when the channel state information can not meet the requirements, equal gain combining (EGC) provides an alternative to slightly reduce the complexity. Therefore, we provide another closed-form expression of $P_{d}$ based on EGC, using the specially derived probability density function of the sum of SR random variables with independently identical distribution. Simulation results are provided to validate our theoretical analysis and to show that the proposed scheme can achieve the best spectrum-sensing performance, comparing with the traditional energy detection, eigenvalue ratio test and the generalized likelihood ratio test.
本文研究了一种分布式卫星集群(DSC)的频谱感知性能,该集群可以在信号级对每个合作卫星接收到的感知信号进行融合,以增强对微弱信号的感知能力。特别地,假设卫星中继链路经历阴影衰减(SR),我们首先推导出考虑系统的最大比值组合(MRC)的正确检测概率$(P_{d})$的封闭表达式。然而,当信道状态信息不能满足要求时,等增益组合(EGC)提供了一种替代方案,可以略微降低复杂性。因此,我们利用特别导出的具有独立相同分布的SR随机变量和的概率密度函数,给出了基于EGC的另一种封闭形式的$P_{d}$表达式。仿真结果验证了我们的理论分析,并表明与传统的能量检测、特征值比检验和广义似然比检验相比,所提方案能达到最佳的频谱感知性能。
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引用次数: 0
Analysis of Reconfigurable Intelligent Surface-Aided Wireless Communication: Potential Schemes, Standard Impact and Practical Challenges 可重构智能地面辅助无线通信分析:潜在方案、标准影响和实际挑战
Pub Date : 2022-08-11 DOI: 10.1109/ICCCWorkshops55477.2022.9896646
Nanxi Li, Jianchi Zhu, Jing Guo, X. She, Peng Chen
Reconfigurable intelligent surface (RIS) is one of the key potential technologies for 6G communication system. Generally, there are three types of RIS considering the use case and practical form, noted as fully-transparent RIS, half-transparent RIS and non-transparent RIS, respectively. Among the three types, half-transparent RIS plays a better balance between control flexibility and UE complexity, thus it may be the main form in RIS evolution. In this paper, we mainly focus on half-transparent RIS and propose a fundamental RIS-aided transmission scheme, together with the analysis on its air-interface requirement and standard impact. Moreover, based on the fundamental scheme, some potential extension schemes are proposed and analyzed, including multi-hop RIS-aided transmission and RIS-aided frequency hopping transmission. In the end, considerations on practical challenges for RIS from operator's perspective are provided.
可重构智能表面(RIS)是6G通信系统的关键潜在技术之一。一般来说,考虑到用例和实际形式,RIS有三种类型,分别称为全透明RIS、半透明RIS和不透明RIS。在这三种类型中,半透明RIS在控制灵活性和UE复杂性之间取得了更好的平衡,因此它可能是RIS进化的主要形式。本文主要以半透明RIS为研究对象,提出了一种基本的RIS辅助传输方案,并对其空口要求和标准影响进行了分析。此外,在基本方案的基础上,提出并分析了几种可能的扩展方案,包括多跳ris辅助传输和ris辅助跳频传输。最后,从运营商的角度对RIS面临的实际挑战进行了思考。
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引用次数: 0
Parameters and Decoding Performance of Subfield Subcodes of One-Point Elliptic Codes 一点椭圆码的子域子码参数及译码性能
Pub Date : 2022-08-11 DOI: 10.1109/ICCCWorkshops55477.2022.9896651
Jian Zhao, Li Chen
It is known that subfield subcodes of Reed-Solomon (RS) codes include many good codes, such as BCH codes and classical Goppa codes. Extending the subfield subcode discovery from RS codes to the more general algebraic-geometric (AG) codes, this paper investigates the subfield subcodes of one-point elliptic codes, in order to provide an alternative to BCH codes. Lower bounds on the dimension and the minimum distance of these codes are characterized, which behave tight for the medium-to-high rate subfield subcodes of differential elliptic codes. The work will show that subfield subcodes of differential elliptic codes are superior to those of the evaluation ones. Many good codes and even the best known linear codes can be found in the family of these codes. With both the elliptic codes and the RS codes defined over the same field, near maximum likelihood (ML) decoding results show that some binary subfield subcodes of the elliptic codes outperform the similar rate BCH codes.
众所周知,RS码的子域子码包括许多好的码,如BCH码和经典的Goppa码。将RS码的子域子码发现推广到更一般的代数几何码,研究了一点椭圆码的子域子码,以期为BCH码提供一种替代方案。对于微分椭圆码的中高速率子域子码,给出了码的维数下界和最小距离下界的特征。研究结果表明,微分椭圆码的子域子码优于求值子码。在这些代码家族中可以找到许多好的代码,甚至是最著名的线性代码。在椭圆码和RS码定义在同一域上的情况下,近最大似然(ML)解码结果表明,椭圆码的一些二进制子域子码优于相似速率的BCH码。
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引用次数: 1
A survey of Mobility management for mobile networks supporting LEO satellite access 支持低轨道卫星接入的移动网络移动性管理研究
Pub Date : 2022-08-11 DOI: 10.1109/ICCCWorkshops55477.2022.9896686
Peirong Xie, Qingyang Wang, Jie Chen
The integration of space, aerial and terrestrial access is an important feature of the future 6G network, and it is also one of the development trends of the current mobile network. In particular, Low Earth Orbit (LEO) satellite has the advantages of high bandwidth, low delay and wide coverage, which can be a powerful supplement to the current mobile access method. However, the ultra-high mobility of LEO satellite brings severe challenges to the mobility management of legacy mobile networks. This paper first introduces the mobile network architecture supporting satellite access, then presents the main mobility management methods in the current IP network, and analyzes the pros and cons of various methods respectively. Then, we makes a comprehensive analysis on the mobility management methods of 5G mobile network, and puts forward the optimization idea of mobility management of satellite access, After that, we analyzes the two mobility schemes of satellite access proposed by 3GPP in SAT_ARCH project. Finally, the future research direction of mobility management of subsequent satellite access mobile network are discussed.
空间、空中和地面接入的融合是未来6G网络的重要特征,也是当前移动网络的发展趋势之一。特别是近地轨道卫星具有高带宽、低时延、广覆盖等优点,可以成为当前移动接入方式的有力补充。然而,低轨道卫星的超高移动性给传统移动网络的移动性管理带来了严峻的挑战。本文首先介绍了支持卫星接入的移动网络体系结构,然后介绍了当前IP网络中主要的移动管理方法,并分别分析了各种方法的优缺点。然后,对5G移动网络的移动性管理方法进行了全面分析,提出了卫星接入移动性管理的优化思路,然后对3GPP在SAT_ARCH项目中提出的两种卫星接入移动性方案进行了分析。最后,对后续卫星接入移动网络移动性管理的未来研究方向进行了探讨。
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引用次数: 3
Artificial Intelligence Service by Satellite Networks based on Ensemble Learning with Cloud-Edge-End Integration 基于集成学习和云-端集成的卫星网络人工智能服务
Pub Date : 2022-08-11 DOI: 10.1109/ICCCWorkshops55477.2022.9896696
Zhen Gao, Yuqiu Zhang, Wenqiao Sun
Satellite network is the necessary supplement to ground network for wireless coverage for remote area. At the same time, Deep Neural Networks (DNN) based artificial intelligence (AI) applications has been widely applied in many aspects of people's life, but most DNN models are deployed in cloud due to their high complexity. Since cloud is far from end users in remote area, cloud based AI service cannot meet the latency requirement for users at remote area. Satellite based edge computing is a promising solution to this problem, but the limited resources on satellite platform cannot support complex models. In this paper, we propose to integrate the cloud, satellite edges and the end users to form an AI service framework, and apply ensemble learning to provide efficient and reliable AI service. Two case studies on image classification task are performed to show the effectiveness of the proposed scheme.
卫星网络是偏远地区无线覆盖对地面网络的必要补充。与此同时,基于深度神经网络(Deep Neural Networks, DNN)的人工智能(artificial intelligence, AI)应用已经广泛应用于人们生活的许多方面,但由于DNN模型的高复杂性,大多数DNN模型部署在云端。由于云距离偏远地区的终端用户较远,基于云的人工智能服务无法满足偏远地区用户的延迟需求。基于卫星的边缘计算是一个很有前途的解决方案,但卫星平台有限的资源无法支持复杂的模型。在本文中,我们提出将云、卫星边缘和终端用户整合形成一个人工智能服务框架,并应用集成学习提供高效可靠的人工智能服务。通过对图像分类任务的两个实例研究,验证了该方法的有效性。
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引用次数: 0
A Finite Blocklength Coding Scheme for the Two-Way Full-duplex Fading Channel 双向全双工衰落信道的有限块长编码方案
Pub Date : 2022-08-11 DOI: 10.1109/ICCCWorkshops55477.2022.9896672
Dengfeng Xia, Chuanchuan Yang, Bin Dai
In this paper, a finite blocklength (FBL) coding scheme is proposed for the two-way full-duplex flat-fading channel. Based on this proposed scheme, an achievable rate region for given blocklength and decoding error probability is obtained, and the results of this paper are further illustrated via numerical examples.
针对双向全双工平衰落信道,提出了一种有限块长(FBL)编码方案。在此基础上,给出了给定码块长度和译码错误概率的可实现速率区域,并通过数值算例进一步说明了本文的研究结果。
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引用次数: 0
Integrated Sensing and Communication Beamforming Design Based on Mutual Information 基于互信息的集成传感与通信波束形成设计
Pub Date : 2022-08-11 DOI: 10.1109/ICCCWorkshops55477.2022.9896665
Jin Li, Nan Liu
Integrated sensing and communication (ISAC) unifies radar sensing and communication, and improves the efficiency of the spectrum, energy and hardware. In this paper, we investigate the ISAC beamforming design in a downlink system with a communication user and a point radar target to be perceived. The design criterion for radar sensing is the mutual information between the target response matrix and the echo signals, while the single user transmission rate is used as the performance metric of the communication. Two scenarios without and with interference from the communication user are investigated. A closed-form solution with low complexity and a solution based on the semidefinite relaxation (SDR) method are provided to solve these two problems, respectively. Numerical results demonstrate that, compared to the results obtained by SDR based on the CVX toolbox, the closed-form solution is tight in the feasible region. In addition, we show that the SDR method obtains an optimal solution.
集成传感与通信(ISAC)将雷达传感与通信统一起来,提高了频谱、能源和硬件的效率。在本文中,我们研究了ISAC波束形成设计在一个通信用户和一个点雷达目标被感知的下行系统。雷达传感的设计准则是目标响应矩阵与回波信号之间的互信息,以单用户传输速率作为通信的性能指标。研究了无通信用户干扰和有通信用户干扰两种情况。针对这两个问题,分别提出了一种低复杂度的闭式解和一种基于半定松弛(SDR)方法的解。数值结果表明,与基于CVX工具箱的SDR得到的结果相比,该闭式解在可行域内是紧的。此外,我们还证明了SDR方法可以得到一个最优解。
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引用次数: 3
Mobile Integrated Access and Backhaul: Potential Power Saving Issues and Solutions 移动综合接入和回程:潜在的节能问题和解决方案
Pub Date : 2022-08-11 DOI: 10.1109/ICCCWorkshops55477.2022.9896689
Hao Li, Chen Sun, Shuo Wang
A key benefit of integrated access and backhaul (IAB) is enabling flexible and very dense deployment of NR cells without densifying the transport network proportionately. In mobile IAB (mIAB) networks, due to the large-scale deployment of mIAB nodes, lightly loaded nodes or even nodes without service objects may cause unnecessary energy consumption and interference with the surrounding IAB nodes. However, the existing UE transition methods and activation trigger methods from the connected state to the inactive state are not suitable for mIAB nodes. In addition, due to the mobility of mIAB nodes, a longer activation time of nodes lead to a more serious degradation of the user quality of service. Therefore, in this paper, we study the deactivation and activation mechanism of mIAB nodes, and the conditions that trigger the activation of mIAB nodes. At last, the efficient state transition of mIAB nodes is considered.
综合接入和回程(IAB)的一个关键优势是能够灵活和非常密集地部署NR单元,而不会使传输网络按比例致密化。在移动IAB (mobile IAB)网络中,由于mIAB节点的大规模部署,轻负荷甚至无服务对象的节点可能会造成不必要的能耗,并对周围的IAB节点造成干扰。但是,现有的从连接状态到非活动状态的UE转换方法和激活触发方法不适合mIAB节点。此外,由于mIAB节点的移动性,节点激活时间越长,用户服务质量下降越严重。因此,在本文中,我们研究了mIAB节点的失活和激活机制,以及触发mIAB节点激活的条件。最后,考虑了mIAB节点的有效状态转移问题。
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引用次数: 0
Trends and Challenges of Policy Verification for Intent-based Networking towards 6G 面向6G的基于意图的网络策略验证趋势与挑战
Pub Date : 2022-08-11 DOI: 10.1109/ICCCWorkshops55477.2022.9896717
Dong Wang, Ruiran Su, Shenhu Zhang, Yanxia Xing
Intent-based Networking (IBN) is geared towards the on -demand service requirements of future intelligent network full-service scenarios, providing personalized network services and differentiated service level agreement (SLA) for users. It is implemented based on autonomous networks, which requires to use Artificial Intelligent (AI) models to match appropriate services and resources to the network requirements proposed by users. To improve the reliability of matching policies by AI models in closed -loop autonomous networks, an open scheme is proposed for AI policy verification using digital twins. The scheme is tested and analyzed based on an open-source project platform. Finally, the technical evolution route and challenges of IBN AI policy verification based on digital twins is also discussed in this paper.
IBN (intention -based Networking)是面向未来智能网络全业务场景的随需应变业务需求,为用户提供个性化的网络服务和差异化的SLA (service level agreement)。它基于自治网络实现,需要使用人工智能(AI)模型将适当的服务和资源与用户提出的网络需求相匹配。为了提高闭环自治网络中人工智能模型匹配策略的可靠性,提出了一种利用数字孪生进行人工智能策略验证的开放方案。该方案在一个开源项目平台上进行了测试和分析。最后,讨论了基于数字孪生的IBN AI策略验证的技术演进路线和面临的挑战。
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引用次数: 3
期刊
2022 IEEE/CIC International Conference on Communications in China (ICCC Workshops)
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