学习5G标准过程中，经常碰到各种缩略语，CSDN博客里面的确有不少人整理了常见的缩略语，但在真正阅读标准的时候，发现还是有些找不到。个人在学习过程中，顺手把自己遇到不会的进行了查找，并记录在这里。个人能力有限，如有错漏，还请网友们指正。
（最新更新于：2021年3月17日）
| 5G-RG | 5G-Residential Gateway | |
| 5GC | 5G Core | |
| 5GS | 5G System | |
| 5QI | 5G QoS Identifier | |
| AF | Application Function | |
| AMBR | Aggregate Maximum Bit Rate | 聚合最大比特速率 |
| AMF | Access and Mobility Management Function | |
| AN | Access Network | |
| ARP | Allocation and Retention Priority | 分配和保留优先级 |
| BAR | Buffering Action Rule | PFCP缓存动作规则 |
| BP | Branching Point | |
| CM | Connection Management | |
| CUPS | Control and User Plane Seperation | |
| DL | Data Layer | 数据层 |
| DL | Down Link | 下行链路 |
| DRB | Dedicated Radio Bearer | 数据无线承载 |
| DN | Data Network | |
| DNAI | DN Access Identifier | 数据网接入标识 |
| DNN | Data Network Name | |
| EAP | Extensive Authentication Protocol | |
| EBI | EPS Bearer Identity | EPS承载标识 |
| EPC | Evolved Packet Core | 分组核心网 |
| EPS | Evolved Packet System | 演进分组系统 |
| F-TEID | Fully Qualified Tunnel Endpoint Identifier | |
| FAR | Forwarding Action Rule | 转发动作策略 |
| FTUP | F-TEID allocation in the UP function | |
| GBR | Guaranteed Bit Rate | 保证流速率 |
| gNB | gNodeB | |
| GFBR | Guaranteed Flow Bit Rate | 保证的流比特速率 |
| GPSI | General Public Subscription Identifer | |
| GUAMI | Globally Unique AMF Identifier | |
| GUTI | Globally Unique Temporary Identifier | |
| I-UPF | Intermediate UPF | |
| LADN | Local Area Data Network | 局域数据网 |
| MAR | Multi-Access Rule | |
| MBR | Max Bit Rate | 最大比特速率 |
| MCC | Mobile Country Code | |
| MDBV | Maximum Data Burst Volume | 最大数据突发量 |
| MICO | Mobile Initiated Connection Only | 仅终端发起连接模式 |
| MFBR | Maximum Flow Bit Rate | 最大流比特速率 |
| MIMO | Multiple-Input Multiple-Output | |
| MM | Massive MIMO | |
| MNC | Mobile Network Code | |
| MO | Mobile Originated | |
| MT-SMS | Mobile Terminated - Short Message Service | |
| NAS | Non-Access Stratum | 非接入层 |
| N3IWF | Non-3GPP InterWorking Function | |
| NEF | Network Exposure Function | |
| NG-RAN | Next-Generation Radio Access Network | |
| NGAP | Next Generation Application Protocol | |
| NRF | Network Repository Function | |
| NSSAI | Network Slice Selection Assistance Information | |
| PCC | Policy and Charging Control | |
| PCO | Protocol Configuration Options | |
| PD | Prefix Delegation | 前缀委托 |
| PDB | Packet Delay Budget | 数据包延时预算 |
| PDCP | Packet Data Convergence Protocol | 分组数据汇聚协议 |
| PDI | Packet Detection Information | 数据包检测信息 |
| PDR | Packet Detection Rule | 数据包检测规则 |
| PDU | Protocol Data Unit | |
| PEI | Permanent Equipment Identifier | |
| PER | Packet Error Rate | 数据包误码率 |
| PFCP | Packet Forwarding Control Protocol | |
| PFD | Packet Flow Description | 数据包流说明 |
| PLMN | Public Land Mobile Network | |
| PDCP | Packet Data Convergence Protocol | |
| PDN | Public/Packet Data Network | |
| PPF | Paging Proceed Flag | |
| PSA | PDU Session Anchor | |
| PRA | Presence Reporting Area | |
| QER | QoS Enforcement Rule | QOS执行规则 |
| QCI | QoS Class Identifier | QoS类标识 |
| QFI | QoS Flow Identifier | QoS流标识 |
| RAN | Radio Access Network | 无线接入网 |
| RFSP | RAT Frequency Selection Priority | |
| RLC | Radio Link Control | |
| RM | Register Management | |
| RQA | Reflective QoS Attribute |
反射式QoS属性 |
| RQI | Reflective QoS Indicator |
|
| RRC | Radio Resource Control | 无线资源控制 |
| RRM | Radio Resource Management | |
| RAT | Radio Access Technology | 无线接入技术 |
| S-NSSAI | Single Network Slice Selection Assistance Information | |
| SDAP | Service Data Adaptation Protocol | 服务数据适配协议 |
| SDF | Service Data Flow | |
| SLAAC | Stateless Address Auto-configuration | |
| SMF | Session Management Function | |
| SSC | Session and Service Continuity | 会话和服务连续性 |
| SUCI | Subscription Concealed Identifier | |
| SUPI | Subscription Permanent Identifier | |
| TAC | Tracking area code | |
| TAI | Tracking Area Identity | |
| TMSI | Temporary Mobile Subscriber Identity | |
| UDM | Unified Data Management | |
| UDSF | Unstructured Data Storage Function | |
| UE | User Equipment | 用户设备 |
| UE-TLNA | User Equipment - Transport Network Layer Association | |
| UL | Up Link | 上行链路 |
| UL-CL | Uplink Classifier | 上行分类器 |
| UPF | User Plane Function | |
| URR | Usage Reporting Rule | PFCP使用报告规则 |
| W-5GAN | Wireline 5G Access Network |