重庆邮电大学学报（自然科学版）2016，Vol.28Issue(5)：628-633,640,7.DOI:10.3979/j.issn.1673-825X.2016.05.004
基于自适应随机接入的动态D2D发现资源分配机制
Dynamic D2 D discovery resource allocation scheme based on adaptive random access
摘要
Abstract
The existing device-to-device (D2D)discovery scheme in D2D communication has low discovery success ratio, small discovery range,and cannot satisfy the traffic requirements of D2D uses that have high priority,and in order to resolve this problem,this paper proposes a dynamic D2D discovery resource allocation scheme based on adaptive random access.Firstly,the users with high priority send an emergence request message to the base station based on traditional access random procedure,and then the base station configures the discovery resource allocation information of next discov-ery duration based on the number of emergence request message which is transmitted by D2D users who have high priority. Moreover,the users with low priority adaptively switches the random access from multi-channel slotted ALOHA (MCALO-HA)to energy sensing MCALOHA (MCALOHA-ES)based on the number of unsuccessful resource selection of D2D users who have low priority.Finally,D2D receivers estimate whether to discover its neighbor users successfully based on the re-ceived signal to interference plus noise (SINR).System simulation shows that the proposed schemecan not only can satisfy the traffic requirements of different priority users,but also support higher discovery success ratio and longer discover range compared to the conventional random access scheme.关键词
终端直通(D2D)发现/资源分配/优先级/自适应随机接入Key words
device-to-device(D2D)discovery/resource allocation/priority/adaptive random access分类
信息技术与安全科学引用本文复制引用
刘占军,李云鹏,丁凯,陈前斌..基于自适应随机接入的动态D2D发现资源分配机制[J].重庆邮电大学学报（自然科学版）,2016,28(5):628-633,640,7.基金项目
国家自然科学基金 （）
