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动态信道分配

动态信道分配的相关文献在1992年到2022年内共计232篇,主要集中在无线电电子学、电信技术、自动化技术、计算机技术、邮电经济 等领域,其中期刊论文114篇、会议论文5篇、专利文献223779篇;相关期刊69种,包括无线互联科技、电子学报、电子与信息学报等; 相关会议5种,包括中国通信学会国防通信技术委员会第五届学术年会暨现代通信技术学术研讨会、2008年通信理论与信号处理学术年会、2007北京青年通信科技论坛等;动态信道分配的相关文献由371位作者贡献,包括吴伟陵、李方伟、党安红等。

动态信道分配—发文量

期刊论文>

论文:114 占比:0.05%

会议论文>

论文:5 占比:0.00%

专利文献>

论文:223779 占比:99.95%

总计:223898篇

动态信道分配—发文趋势图

动态信道分配

-研究学者

  • 吴伟陵
  • 李方伟
  • 党安红
  • 吴本寿
  • 周德锁
  • 唐宏
  • 张海波
  • 朱世华
  • 朱锦景
  • 江海
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 李航; 赵明; 王京
    • 摘要: 针对已有动态信道分配策略在阴影衰落环境中性能损失较大的问题,对卫星移动通信系统的阴影衰落信道模型进行分析,提出了一种动态信道分配策略。该策略结合用户的运动状态,通过在用户的预测运动轨迹上选取抽样点,将这些抽样点的平均干扰作为信道分配的指标,并采用链路质量约束避免了流量较大时的性能恶化。仿真结果表明提出的动态信道策略可在不增大阻塞率的前提下,在中低流量时将用户平均信噪比提高约0.5 dB。该策略可以应用于阴影衰落信道下的地面移动卫星通信系统,以提高用户的平均链路性能。%The performance of existing dynamic channel assignment schemes is significantly degraded in shadowed fading environment. To solve the problem,the shadowed fading channel model of satellite mobile communication system is analyzed,and a new dynamic channel assignment scheme is proposed. In the pro-posed scheme, the channel is assigned according to the average interference of the sampling positions, which are chosen by predicting user’ s trajectory. Link quality restrict is also applied to avoid performance degradation in case of heavy traffic. Simulation results show that the users’ average signal-to-noise ratio (SNR) is improved by about 0. 5 dB in case of low and medium traffic,while the blocking rate is not in-creased. The proposed scheme can be adopted in land mobile satellite communication system in shadowed fading channel,in order to improve the average link performance for users.
    • 张海波; 刘盈娜; 李方伟; 刘开健
    • 摘要: 为了避免多媒体多播组播单频网(MBSFN)区域内部和区域之间的干扰,进一步提高频谱效率,该文提出一种改进的基于噪声调节时滞噪声混沌神经网络(NHNCNN)的动态信道分配方法。首先,根据MBSFN区域的特殊拓扑结构,重新定义了4种电磁兼容限制函数,在此基础上精心构建了免干扰的 NHNCNN 能量函数。其次对NHNCNN的稳态判定进程加以改进以提高系统的收敛速度。特别地,采用类二分法联合NHNCNN去搜索最小信道分配总数。仿真结果表明,利用富足的NHNCNN时滞、噪声和混沌神经动力,所提算法能有效地搜索到合理解,并最终找到全局最优解,提高了频谱效率。与现有方法相比,所提算法能够实现更好的收敛速度和合理解率。%A dynamic channel allocation algorithm is proposed to avoid all interference and improve spectrum efficiency in Multimedia Broadcast multicast service Single Frequency Networks (MBSFN). Four electromagnetic compatibility constraint functions are redefined according to the topology information of MBSFN. In order to avoid all intra-area and inter-area interference of MBSFN, a novel energy function of Noise-tuning-based Hysteretic Noisy Chaotic Neural Network (NHNCNN) is constructed elaborately based on renewed constraint functions. Also, the judgment process of the stable state of NHNCNN is developed to accelerate system convergence. Specifically, the dichotomy method is adopted jointly to minimize the total number of allocated channels so as to further improve spectrum efficiency. Simulation results show that a feasible solution without any interference can be effectively searched by the improved NHNCNN. Finally, the optimal solution with minimum total channel number is found. Compared with existing algorithms, the proposed algorithm achieves better convergence speed and quality of solution.
    • 黄春明
    • 摘要: In the light of bearing mechanism and signaling flow of TD-SCDMA concurrent services, the abnormal events and problems were analyzed in detail. The corresponding optimization ideas and solutions were presented, which effectively improved network performance and user perception.%从TD-SCDMA并发业务承载机制与信令流程入手,对异常事件及问题进行详细分析,并提出相应的优化思路和解决方案,有效地改善了网络性能指标和用户感知。
    • ZHANG Min; LI De-min; JIN Kang
    • 摘要: In order to achieve reasonable dynamic allocation of communication channels between the vehicle nodes in multi-radio multi-channel VANET, this paper proposed a dynamic channel allocation algorithm based on channel switching queue between two communication%为了合理地实现多接口多信道车载自组织网络(VANET)车辆节点间通信信道的动态分配,提出了一种基于通信双方车辆节点信道切换队列的动态信道分配算法。定义了车辆节点的射频接口状态,给出了信道的性能因子以及信道切换队列的生成方法,通过综合考虑通信双方车辆节点的射频接口状态和信道切换队列,快速自主地建立通信链路,从而解决了信道公平接入和分配不合理的问题。通过软件仿真比较可以看出,该算法实现了信道的动态分配,减小了平均端到端时延,增加了网络平均吞吐量,显著提高了多接口多信道VANET的网络性能。
    • 夏汉铸; 王志刚
    • 摘要: 针对无线Mesh网络的网络特性,提出了无线Mesh网络MAC协议设计的一般原则,分析了MAC面临的问题,对无线Mesh网络中典型的MAC协议DCF、EDCA和DCA的实现过程进行了分析和比较,同时对MAC协议的研究方向进行了探讨。%Aiming at the network characteristics of wireless Mesh networks, the general principles of the MAC protocol design of wireless Mesh networks are proposed, the issues faced by the MAC are analyzed. And the implementation process of DCF, EDCA and DCA of typical MAC protocol in wireless Mesh networks are analyzed and compared. In the same time the research directions of MAC protocol is explored.
    • 赵军娜; 王梅; 杜树伟; 吴亚楠
    • 摘要: TD-SCDMA系统作为TDD-CDMA系统的代表,与FDD-CDMA相比,它在物理层采用了智能天线、多用户检测、上行同步以及特殊的帧结构等.在分析TD-SCDMA系统帧结构的基础上,提出了一种改进的动态信道分配方案以及考虑空间分布信息的信道分配算法,通过增大交叉时隙的空间隔离度和减少交叉时隙的使用机率来改善基站间的相互干扰,同时使每个时隙的用户空间分布更加均匀,能够有效增加系统容量,改善系统性能.
    • 管明祥; 郭庆; 顾学迈
    • 摘要: To resolve the lack of wireless channel resource causing by load unbalance, a novel dynamic channel allocation algorithm in HAPS communication based on distance verdict is proposed through real-time monitor of distance which corresponded the transmit-receive power of wireless link.By comparison to two wireless channel allocation algorithms in literature, the call drop ratio is decreased greatly with slight blockage ratio increasing and the system performance is improved availably.%本文提出一种基于距离判决的高空平台站(HAPS)通信的动态信道分配(DCA)算法,通过对无线链路功率到收发链路距离的转化,实时监测HAPS通信的收发链路距离来进行无线信道分配,解决HAPS通信中由于负载不均等造成的无线资源无法满足用户需求的问题.通过与随机信道分配算法及最差可接受信道分配算法的性能进行比较,本文提出的基于距离判决的算法能够在阻塞概率稍微增加的情况下解决系统连接中断问题,有效地提高了系统的整体性能.
    • 胡琳娜; 曹宁; 毛明禾
    • 摘要: Aimming at the limitation of conventional slow DCA algorithm,and combined with the characteristics of the TD-SCDMA system,a carrier priority slow dynamic channel allocation algorithm is proposed to solve tidal phenomenon caused by regional traffic migration.The simulation results show that the algorithm can effectively reduce the waste of resources,and improve resource utilization,and at the same time can reduce user access time and packet delay,and improve access success rate.%针对传统慢速DCA算法的不足,结合TD-SCDMA系统的特点,提出了一种基于载波优先级的慢速动态信道分配算法,以解决区域内话务量迁徙而产生的“潮汐现象”.仿真结果表明,提出的算法能够有效地减少基带资源的浪费和用户接入时间,从而提高基带资源的利用率和接入成功率.
    • 申大伟
    • 摘要: 本文介绍了一种无线局域网中分布式动态信道分配的算法。该算法是为了适应组网发展,设计出的一种在分布式环境下运行的信道分配算法。由于无线技术的发展,同一网络下会存在大量的无线接入点,传统的信道分配算法在这时候就会突显出时间复杂度高的问题。本文通过引入社区划分的算法,将网络进行分解,在各子网络中进行信道分配,从其他的角度一定程度上解决了时间复杂度的问题。通过NS2模拟仿真,证实了该算法的可行性,可以明显减少信道调整的时间。
    • 李海东; 刘海林
    • 摘要: 针对TD-HSPA系统现有快速动态信道分配算法的数据业务中没有优先级次序的不足,提出了一种基于移动互联网的快速动态信道分配算法.该算法依据数据业务传输时延敏感度、速率高低等设定不同的优先级,以及部分资源共享的方法,使可移动边界动态信道分配策略更为灵活.仿真结果表明,该算法保证了优先服务实时性数据用户、高速率数据用户,提高了共享资源利用率.%In order to eliminate the disadvantages of current fast dynamic channel allocation algorithm with no priority of data service in TD-HSPA system, it proposes a new dynamic channel allocation algorithm, based on the Mobile Internet. In the proposed algorithm, different priorities were set through data traffic transmission delay sensitivity and rate, and the method of resource sharing was proposed, which made movable boundary dynamic channel allocation strategy more flexible. Simulation results show that the algorithm ensures to serve real-time and high rate data users first, improving the utilization efficiency of shared resources.
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