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接纳控制

接纳控制的相关文献在1994年到2022年内共计594篇,主要集中在自动化技术、计算机技术、无线电电子学、电信技术、邮电经济 等领域,其中期刊论文223篇、会议论文15篇、专利文献1423493篇;相关期刊113种,包括电子与信息学报、通信学报、计算机工程等; 相关会议15种,包括2013年中国教育和科研计算机网第20届学术会议、第十九届全国网络与数据通信学术会议、2012(第三届)智能运输大会等;接纳控制的相关文献由809位作者贡献,包括尤建洁、宋军、周晓云等。

接纳控制—发文量

期刊论文>

论文:223 占比:0.02%

会议论文>

论文:15 占比:0.00%

专利文献>

论文:1423493 占比:99.98%

总计:1423731篇

接纳控制—发文趋势图

接纳控制

-研究学者

  • 尤建洁
  • 宋军
  • 周晓云
  • 孙默
  • 邹婷
  • 黄福清
  • 宗在峰
  • 吕珍珠
  • 柯雅珠
  • 毛玉欣
  • 期刊论文
  • 会议论文
  • 专利文献

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    • 程超
    • 摘要: 在L900系统中,无线资源管理包含着相当巨大的内容,宏观上能够分成两大类,它们分别是资源与承载的管理,这之中资源管理有调度、功率控制、干扰协调算法等部分,承载管理则包括接纳控制、承载控制和切换算法等方面。由于下行业务吞吐量太低,因此本文主要研究上行链路资源管理技术中的调度问题。在不同的用户设终端备或同一用户设备不同逻辑信道之间划分共享信道资源功能称为调度。在上行调度过程中,上行的资源调度器位于eNode B侧。首先,终端先上报调度所需的主要信息,L900系统中上行探测导频,主要是用于基站进行评估上行信道的质量;然后,基站根据收集到的相关信息进行上行调度判决,再通知被调度的用户。
    • 余建; 杨晓冬; 刘孙发
    • 摘要: 聚合流量是在云计算环境下由多个网络用户数据源叠加后产生的一种聚合流。云计算存在高并发性,在多个服务同时请求接入网络时,传统的单流的接纳控制方法只能处理一个请求,其他服务要等前面的流被处理完才能接受服务,当并发请求的服务越多,等待的延迟也就越大,用户的体验效果也就越差。为了提升网络并发处理的能力,以进一步提高云计算的QoS,提出一种基于聚合流的有效带宽(effective bandwidth for aggregate flow,EBAF)接纳控制算法,通过估计聚合流所需的带宽来执行接纳控制,能同时处理多个服务请求。实验结果表明,EBAF算法的接纳能力相对传统的单流的接纳控制方法能较大的提高云计算服务保证质量。
    • 夏玮玮; 丁兆明; 沈连丰
    • 摘要: 提出异构网络中基于负载传递的联合接纳控制(LJAC, load-transfer-based joint admission control)算法,该算法基于负载均衡接纳用户的接入请求,在异构网络交叠覆盖区域引入业务的动态负载传递,同时考虑异构网络的布局以及垂直切换等因素的影响.将异构网络融合系统建模为多维马尔可夫链,获得稳态概率,推导异构网络融合系统的服务质量(QoS, quality of service)性能指标.基于泊松点过程理论,获得满足QoS限制时的异构网络容量上界.以最大化资源使用率同时保证用户的QoS为目标,优化异构网络融合系统的接纳参数.仿真结果表明,LJAC算法能实现更低的业务阻塞率和垂直切换请求失败率以及更高的系统容量增益.%A load-transfer-based joint admission control (LJAC) algorithm in heterogeneous networks was proposed. The access requirements of users were admitted based on load balancing, the dynamic load transfer of traffics in the overlap-ping coverage areas of heterogeneous networks were introduced, and the influence of such factors as the layout of heter-ogeneous networks and the vertical handoff was considered in the algorithm. The integrated system of heterogeneous networks was modeled as a multidimensional Markov chain, the steady-state probabilities were obtained and the quality of service (QoS) performance metrics were derived. Based on the Poisson point process theory, the upper bound of ca-pacity of the heterogeneous networks satisfying QoS limitations was obtained. The admission control parameters of the integrated system of heterogeneous networks were optimized in order to maximize the resource utilization rate as well as guaranteeing the QoS of users. The simulation results demonstrate lower traffic blocking probability, lower failure proba-bility of vertical handoff requirements, and larger system capacity gain can be achieved by using the proposed LJAC al-gorithm.
    • 郭娟; 张森; 姚远
    • 摘要: 软件定义网络( SDN)为实现异构无线网络中的负载均衡提供了新的思路。设计了一种软件定义的无线网络负载均衡架构,并提出对应算法。首先,根据接收信号强度构建候选网络列表;其次,根据各候选网络的可用负载比率标准差进行负载差异分级;再次,将服务质量匹配度函数和负载均衡指数线性组合成联合优化函数,并根据负载差异分级对联合优化的权重进行动态调整,合理设置门限进行接纳控制。与传统算法相比,所提算法一方面可使各类业务阻塞率明显降低大约20%,另一方面使不同网络的归一化负载更加接近。该算法在进行网络负载均衡的同时,能够有效降低业务阻塞率,从而有效提升异构无线网络的整体性能。%Software defined network( SDN) provides a new way to achieve load balancing in heterogeneous wireless networks. A load balancing architecture and algorithm for software defined wireless network are proposed. First,the algorithm constructs a list of candidate networks based on the received signal strength ( RSS) . Secondly,by calculating the standard deviation of available load ratio in each available candidate network,the load differences among the candidate networks are classified. Then,a joint optimization func-tion is proposed by linearly combing a quality of service( QoS) matching function and a load balancing in-dex . In accordance with classification results,the weight of the joint optimization function is dynamically ad-justed and admission control is realized by setting a reasonable threshold. Compared with traditional algo-rithm,the proposed algorithm can reduce blocking rate of different services by about 20%;on the other hand,the normalization load of different networks is closer. The algorithm can effectively reduce the traffic congestion rate while balancing the network load,thus effectively improving the overall performance of het-erogeneous wireless network.
    • 郑志翔; 罗文华
    • 摘要: In order to make the cloud computing platform provide effective support for large data analysis,a big data analytics as a service (BDAaaS) system architecture is proposed.First,when a user submits a big data analysis application (BDAA) to the system,the admission controller is used to evaluate the execution time and cost of the task and make an admission decision.Then,the SLA is built by the service level agreement (SLA) manager according to the Quality of Service (QoS) requirements of the tasks.Finally,the resource scheduling model based on ILP with the goal of minimize the execution cost is proposed,and used to schedule resources reasonably under satisfying the SLA.Simulation results show that the proposed scheme can effectively reduce the task execution time,which is effective and feasible.%为了使云计算平台为大数据分析提供有效支持,提出一种大数据分析即服务(BDAaaS)的系统架构;首先,当用户向系统提交大数据分析应用(BDAA)时,通过接纳控制器评估任务的执行时间和成本并作出接纳决策;然后,通过服务等级协议(SLA)管理器根据任务的服务质量(QoS)需求制定SLA;最后,利用提出的整数线性规划(ILP)资源调度模型,以最小化执行成本为目标,在满足SLA下合理调度资源来执行任务;仿真结果表明,提出的方案能够有效降低任务执行时间,具有有效性和可行性.
    • 唐宏; 万晋京; 李兆玉
    • 摘要: In the long term evolution(LTE)system,admission control is one of the most important tech-niques to guarantee the quality of service(QoS).The admission control algorithm with resource reservation is highly affected by the reservation threshold value,also it has a high handoff dropping rate.To deal with these disadvantages,an algorithm with dynamic resource reservation based on queuing in LTE is proposed.First,the algorithm reserves some resources through setting threshold value.After that the new call can use these re-sources directly while the handoff call must request for it .Whatever the request probability is newly defined in this paper.Then when the resources of the system are used up,in order to further reduce the handoff dropping rate,queuing for handoff calls waiting is used for the system own remaining resources.The simulation results show that the proposed algorithm can effectively reduce the handoff dropping rate,improve the utilization rate of system resources.Also the proposed algorithm is less affected by the reservation threshold value.%长期演进(long term evolution,LTE)系统中,接纳控制是保证用户服务质量(quality of service,QoS)要求的重要技术之一。针对现有资源预留算法受预留门限值影响较大,且掉线率较高的缺点,提出一种适用于LTE系统的基于排队机制的动态资源预留算法。首先该算法通过设置门限预留部分资源,让切换呼叫直接接入,新呼叫以新定义的请求概率动态接入。其次在系统资源耗尽时,对切换呼叫采取排队机制,等待系统有剩余资源时接入。仿真结果表明,所提算法能有效降低切换呼叫掉线率,提高资源利用率,并且算法受预留门限值的影响较小。
    • 徐昌彪; 朱联军; 崔恩东
    • 摘要: 在不同频段频谱共存的情况下,针对动静态频谱资源相结合的接入策略和接纳控制机制进行了研究.提出了一种支持动静态频谱资源相结合的非随机接入机制,利用排队论建立了相应的马尔可夫转移模型,定义了联合接纳控制因子,根据用户的需求不同设定了不同的控制因子门限值.启动接纳控制算法,以相应的概率来接纳新的呼叫请求.仿真结果表明,启动接纳控制算法后,用户的阻塞率、强制中断概率、联合接纳控制因子都得到了一定的改善.
    • 郭强; 车玉洁; 张晓萌; 朱若菡
    • 摘要: 为了解决异构网络系统容量有限、资源利用率较低的问题,根据异构网络业务的自相似特性,提出了一种适应自相似业务的异构网络接纳控制算法。首先,通过统计网络演算方法,根据业务流量特性和要求定量求解网络性能的统计边界,进而求解出自相似业务所需的最小带宽,能够进行更准确的带宽估计;其次,制定合理的接纳控制策略,即考虑业务优先级、异构网的剩余带宽以及业务本身所需带宽情况三方面的因素进行接纳控制,另外,该策略通过引入概率机制保证终端接入的公平性;最后,在3G与WLAN互联的异构网络环境下进行OPNET仿真验证。通过仿真结果和数据分析,该算法能够在保证用户服务质量的基础上提高带宽利用率,降低系统的业务阻塞率,实现资源的优化配置。%In order to solve the problem of limited system capacity and low resource utilization rate in heterogeneous network,according to the self-similarity of heterogeneous network traffic,a Call Admission Control ( CAC) algorithm for self-similar traffic model is pro-posed. First of all,it makes more accurate bandwidth estimation by statistical network calculus according to the self-similarity and require-ment for solving the minimal bandwidth of self-similar business. Secondly,reasonable admission control strategy is designed,which con-siders three factors including business priorities,the remainder of the heterogeneous network bandwidth and the business itself for admis-sion control. In addition,by introducing probability mechanism,the strategy ensures the fairness of terminal access. Finally,the OPNET simulation and verification is conducted in the heterogeneous network environment of 3G and WLAN. The results show that this algorithm can improve the utilization of the network and reduce the call drop ratio,realizing the optimized configuration of the resource on the basis of guaranteeing QoS of the network.
    • 张媛媛; 肖创柏; 王坚
    • 摘要: 为了异构无线网络中不同无线技术的融合协同工作可以为终端接入提供随时随地的高质量的网络服务,联合呼叫接纳控制机制是适用于异构无线网络的判决呼叫准入的机制。提出一种优化的联合呼叫接纳控制机制用于异构无线网络,将新的呼叫和切换呼叫作为触发接纳控制的事件,对影响服务质量的参数和接纳控制开销进行网络效用建模分析,使用改进的值迭代算法来降低计算复杂度,将阈值函数分成多个域,来获得最优决策策略。提出的联合接入控制策略可提供优化服务质量保证,节约整个网络的能耗成本,并且有效降低呼叫阻塞率和切换掉线率。实验结果表明:算法具有较高的求解有效性,而且求解速度快,具有较高的推广应用价值。%In heterogeneous wireless networks ( HWNs ) , HWNs are formed by integration of different communication technologies, to support high QoS services anywhere and anytime. Joint call admission control ( JCAC ) is suitable for HWNs. An optimal JCAC strategy for HWNs based on new calls and handoff calls was proposed in this paper, to analyze the network resource utilization and the QoS parameters, and the algorithm of value iteration was improved by using multi-dimensional threshold structure. Finally, the performance of the proposed model was evaluated by simulations. Ths simulation results show that, it can provide high quality of service and minimize the cost, and the strategy has better efficiency and effectiveness in application.
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