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| 1 | A unified algorithm for mobility load balancing in 3GPP LTE multi-cell networks显示文摘3GPP long term evolution (LTE) is a promising candidate for the next-generation wireless network, which is expected to achieve high spectrum efficiency by using advanced physical layer techniques and flat network structures. However, the LTE network still faces the problem of load imbalance as in GSM/WCDMA networks, and this may cause significant deterioration of system performance. To deal with this problem, mobility load balancing (MLB) has been proposed as an important use case in 3GPP self-organizing network (SON), in which the serving cell of a user can be selected to achieve load balancing rather than act as the cell with the maximum received power. Furthermore, the LTE network aims to serve users with different quality-of-service (QoS) requirements, and the network-wide objective function for load balancing is distinct for different kinds of users. Thus, in this paper, a unified algorithm is proposed for MLB in the LTE network. The load balancing problem is first formulated as an optimization problem with the optimizing variables being cell-user connections. Then the complexity and overhead of the optimal solution is analyzed and a practical and distributed algorithm is given. After that, the proposed algorithm is evaluated for users with different kinds of QoS requirements, i.e., guaranteed bit rate (GBR) users with the objective function of load balance index and non-GBR (nGBR) users with the objective function of total utility, respectively. Simulation results show that the proposed algorithm leads to significantly balanced load distribution for GBR users to decrease the new call blocking rate, and for nGBR users to improve the cell-edge throughput at the cost of only slight deterioration of total throughput. | WANG Hao LIU Nan LI ZhiHang WU Ping PAN ZhiWen YOU XiaoHu | 2013 | Science China(Information Sciences)2013，56，2： | 7 |
| 2 | An Approach for Network Function Combination Based on Least Busy Placement Algorithm显示文摘Recently, integrating Softwaredefined networking(SDN) and network functions virtualization(NFV) are proposed to address the issue that difficulty and cost of hardwarebased and proprietary middleboxes management. However, it lacks of a framework that orchestrates network functions to service chain in the network cooperatively. In this paper, we propose a function combination framework that can dynamically adapt the network based on the integration NFV and SDN. There are two main contributions in this paper. First, the function combination framework based on the integration of SDN and NFV is proposed to address the function combination issue, including the architecture of Service Deliver Network, the port types representing traffic directions and the explanation of terms. Second, we formulate the issue of load balance of function combination as the model minimizing the standard deviations of all servers' loads and satisfying the demand of performance and limit of resource. The least busy placement algorithm is introduced to approach optimal solution of the problem. Finally, experimental results demonstrate that the proposed method can combine functions in an efficient and scalable way and ensure the load balance of the network. | XIE Lijun JIANG Yiming WANG Binqiang XIONG Gang CHENG Guozhen | 2016 | China Communications2016，13，S1： | 3 |
| 3 | L2-LBMT:A Layered Load Balance Routing Protocol for Underwater Multimedia Data Transmission显示文摘Providing highly efficient underwater transmission of mass multimedia data is challenging due to the particularities of the underwater environment. Although there are many schemes proposed to optimize the underwater acoustic network communication protocols, from physical layer, data link layer, network layer to transport layer, the existing routing protocols for underwater wireless sensor network(UWSN) still cannot well deal with the problems in transmitting multimedia data because of the difficulties involved in high energy consumption, low transmission reliability or high transmission delay. It prevents us from applying underwater multimedia data to real-time monitoring of marine environment in practical application, especially in emergency search, rescue operation and military field. Therefore, the inefficient transmission of marine multimedia data has become a serious problem that needs to be solved urgently. In this paper, A Layered Load Balance Routing Protocol(L2-LBMT) is proposed for underwater multimedia data transmission. In L2-LBMT, we use layered and load-balance Ad Hoc Network to transmit data, and adopt segmented data reliable transfer(SDRT) protocol to improve the data transport reliability. And a 3-node variant of tornado(3-VT) code is also combined with the Ad Hoc Network to transmit little emergency data more quickly. The simulation results show that the proposed protocol can balance energy consumption of each node, effectively prolong the network lifetime and reduce transmission delay of marine multimedia data. | LV Ze TANG Ruichun TAO Ye SUN Xin XU Xiaowei | 2017 | Journal of Ocean University of China2017，16，6： | 2 |
| 4 | 基于LB(load balance)技术的“微学分”微课程模块构建研究显示文摘LB(load balance)技术的'微学分'微课程模块构建研究有着广泛的研究意义,通过提出'微学分'微课程模块,分析了'微学分'微课程设计过程模式的优势。最后对'微学分' | 柴俊 | 2019 | 智库时代2019，，4： | 0 |
| 5 | 校园网服务器集群负载均衡仿真分析显示文摘文章主要利用OPNET软件对校园网服务器集群负载均衡采用的轮循调度算法(round-robin)、随机算法(Random)、最小负载优先算法(LLF)、少连接数算法(LCF)进行了建模仿真,通过在不同场景下对HTTP网络服务响应速度、HTTP传输速率、服务器的CPU利用率等关键指标进行了对比分析,仿真结果对学院建设'智慧校园'有着重要的促进意义。 | 李晋超 | 2018 | 长治学院学报2018，35，2： | 0 |
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