物联网学报2024，Vol.8Issue(2)：1-15,15.DOI:10.11959/j.issn.2096-3750.2024.00383
基于加权二部图与干扰聚类的D2D通信上下行联合资源分配
Joint uplink and downlink resource allocation for D2D communication based on weighted bipartite graph matching and interference clustering
摘要
Abstract
Device-to-device(D2D)communication is a short-range communication technology that can effectively im-prove the spectral efficiency of cellular networks.A two-stage subchannel and power joint allocation scheme was pro-posed to address the complex scenario of"many-to-many"communication in cellular networks(one subchannel could be assigned to multiple pairs of D2D user equipment(DUE),and one pair of DUE could also use multiple subchannels at the same time),considering the full frequency domain resource reuse in both uplink and downlink subchannels.In the first stage,a weighted bipartite graph matching-based resource allocation(WBGM-RA)algorithm was introduced.This algo-rithm allocated all subchannels to all cellular user equipment(CUE)to maximize CUE sum rate.In the second stage,an interference clustering-based resource allocation(IC-RA)algorithm was proposed,and the interference matrix was con-structed according to the interference relations among UE sharing the same subchannel.Resources allocated to CUE were reallocated to DUE.Moreover,the transmit power of DUE was optimized to maximize the system sum rate while ensured that DUE did not cause serious interference to CUE.This study established a novel joint resource allocation for uplink and downlink subchannels,coupled with a mechanism for"many-to-many"channel reuse.This led to a substantial in-crease in spectrum access opportunities for DUE and overall spectrum efficiency in the network.Simulation results show that compared with the existing typical algorithm,this algorithm can effectively improve the system sum rate,increase the number of communication links in the system and increase the DUE access rate.关键词
蜂窝网络/设备对设备通信/上下行资源共享/信道分配/功率分配Key words
cellular network/device-to-device communication/uplink-downlink resource sharing/channel allocation/power allocation分类
信息技术与安全科学引用本文复制引用
申滨,元文军,李旋..基于加权二部图与干扰聚类的D2D通信上下行联合资源分配[J].物联网学报,2024,8(2):1-15,15.基金项目
国家自然科学基金项目(No.62371082) The National Natural Science Foundation of China(No.62371082) （No.62371082）
