公开(公告)号：US09288678B2

公开(公告)日：2016-03-15

申请号：US13896454

申请日：2013-05-17

Applicant: Beijing University of Posts and Telecommunications

Inventor： Xiaofeng Tao ,  Ping Zhang ,  Xiaona Li ,  Qimei Cui ,  Xiaodong Xu ,  Yingyue Xu ,  Waheed ur Rehman

IPC: H04W16/02 ,  H04W16/30 ,  H04W16/12

CPC classification number: H04W16/02 ,  H04W16/12 ,  H04W16/30

Abstract: The present invention relates to the technical field of wireless communication, and discloses a method for frequency reuse based on cellular network. The method comprises the following steps: dividing the whole cellular network into a plurality of different cell clusters, wherein each cell cluster comprises three cells, every two of them being adjacent to each other; for each cell in a cell cluster, dividing the cell into a central area and an edge area according to the coverage of the cell; dividing the whole available frequency band of the network according to the user distribution and service distribution in the cell cluster; allocating divided frequency bands to the central area and the edge area in the cell cluster respectively according to preset rule; and applying the method for frequency reuse to other cell clusters, thus achieving the frequency reuse of the whole network. With the method, the average spectrum frequency efficiency of the cellular network can be improved, and interference among cells can be effectively suppressed.

Abstract translation: 本发明涉及无线通信的技术领域，并且公开了一种基于蜂窝网络的频率复用方法。 该方法包括以下步骤：将整个蜂窝网络划分成多个不同的小区簇，其中每个小区簇包括三个小区，每个小区彼此相邻; 对于小区簇中的每个小区，根据小区的覆盖范围将小区划分成中心区域和边缘区域; 根据用户分布和服务分布对网络的整个可用频带进行划分; 根据预设规则分别将细分簇的频带分配给小区簇中的中心区域和边缘区域; 并将频率重用方法应用于其他小区集群，从而实现整个网络的频率重用。 利用该方法，可以提高蜂窝网络的平均频谱频率效率，并且可以有效地抑制小区之间的干扰。

公开(公告)号：US11895629B1

公开(公告)日：2024-02-06

申请号：US18486019

申请日：2023-10-12

Applicant: Beijing University of Posts and Telecommunications

Inventor： Kai Niu ,  Zijian Liang ,  Ping Zhang ,  Jincheng Dai ,  Chao Dong ,  Xiaodong Xu ,  Chen Dong

IPC: H04W72/044 ,  H04W72/30

CPC classification number: H04W72/044 ,  H04W72/30

Abstract: A multiple access method includes: obtaining, by a user equipment (UE), first source information; extracting a semantic feature of the first source information to obtain a first semantic feature sequence; performing a joint source-channel coding on the first semantic feature sequence to obtain a first semantic information sequence; mapping the first semantic information sequence into preset time-frequency resources of an uplink multiple access channel; and transmitting the first semantic information sequence through the uplink multiple access channel.

公开(公告)号：US09287939B2

公开(公告)日：2016-03-15

申请号：US13896448

申请日：2013-05-17

Applicant: Beijing University of Posts and Telecommunications

Inventor： Xiaodong Xu ,  Xiaofeng Tao ,  Da Wang ,  Qimei Cui ,  Ping Zhang ,  Xin Chen ,  Dezhuang Wu

IPC: H04B7/02 ,  H04W72/04 ,  H04J11/00

CPC classification number: H04B7/024 ,  H04J11/0053 ,  H04W72/04 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/1264 ,  Y02D70/442

Abstract: The invention relates to the technical field of wireless communication, and provides a method for joint optimization of schedule and resource allocation based on a genetic algorithm, which is applied in a CoMP communication system. The method includes steps of: S1, encoding chromosome; S2, initializing setting; S3, computing fitness value; S4, determining whether the optimal solution is better than an elite: if yes, updating the elite and executing S5, and if no, turning to S5; S5, determining whether a predetermined generation of population has been generated or not, if no, executing S6, otherwise, turning to S8; S6, participating reproduction process to generate two offspring chromosome individuals; S7, determining whether a predetermined number of offspring chromosome individuals have been generated, if yes, turning to S3 to compute again; otherwise keeping on reproduction; S8, performing schedule and resource allocation according to a solution corresponding to the elite. Under the condition of satisfying schedule limitation and power limitation, the method can, by uniting schedule and resource allocation, efficiently optimize system performance with less computing complexity.

Abstract translation: 本发明涉及无线通信技术领域，并提供了一种基于遗传算法联合优化调度和资源分配的方法，该方法应用于CoMP通信系统中。 该方法包括以下步骤：S1，编码染色体; S2，初始化设置; S3，计算适应度值; S4，确定最优解是否优于精英：如果是，更新精英并执行S5，如果否，转向S5; S5，确定是否已经生成了预定生成的群体，否则执行S6，否则转到S8; S6，参与繁殖过程产生两个后代染色体个体; S7，确定是否已经生成了预定数量的后代染色体个体，如果是，则转向S3再次计算; 否则继续生殖; S8，根据与精英对应的解决方案执行时间表和资源分配。 在满足时间表限制和功率限制的条件下，该方法可以通过计划和资源分配结合，以较少的计算复杂度有效优化系统性能。