摘要
5G通信系统中,在用户面协议栈增加了Service Data Adaptation Protocol(SDAP)子层,用于支持新的5G核心网QoS模型。新的QoS模型可以对PDU会话不同的QoS flow配置不同的QoS参数,然而QoS flow到DRB映射关系,3GPP协议并未做出规定。QoS flow与DRB的映射关系,直接决定了QoS业务的保证情况,从而影响用户体验。本文提供了一种NR通信系统的数据传输方案,主要包括QOS flow到DRB(data radio bearer)的映射关系及调整规则,用以满足5G多样性的业务需求。
The SDAP protocol is a new layer in the user plane architecture of 5G radio stack,and it is introduced to support the new flow based QoS model of the 5G core network.With this new QoS model,the core network can configure different QoS requirements for different QoS flows of a PDU session.The mapping rules of QoS flow to DRB are not included in 3GPP standard,which determine the quality of service,and then influence user experience.In this paper,to verify the diverse service requirement,a data transmission scheme for 5G communication system is proposed,and the QoS flow mapping rules and updating rules are introduced.
作者
于吉涛
张琼
刘震
YU Ji-tao;ZHANG Qiong;LIU Zhen(Guanghzhou TAIPU Telecom System CO.Ltd,Guangzhou Guangdong 510630)
出处
《数字技术与应用》
2019年第7期32-33,35,共3页
Digital Technology & Application