5G NR系列（一）缩略语整理
要学习5G协议，一定会面对大量缩略语，本文对5G NR中涉及到的重要缩略语进行了整理，表格按字母表顺序排列，方便读者查看。
| 缩略语 | 英文全称 | 中文解释 |
|---|---|---|
| BCH | Broadcast channel | 广播信道 |
| BWP | Bandwidth part | 带宽部分 |
| CB | Code block | 码块 |
| CBG | Code block group | 码块组 |
| CBGTI | Code block group transmission information | 码块组传输信息 |
| CCE | Control channel element | 控制信道单元 |
| CORESET | Control resource set | 控制资源集 |
| CP | Cyclic prefix | 循环前缀 |
| CPU | CSI processing unit | CSI处理单元 |
| CQI | Channel quality indicator | 信道质量指示 |
| CRB | Common resource block | 公共资源块 |
| CRC | Cyclic redundancy check | 循环冗余校验 |
| CRI | CSI-RS resource indicator | CSI-RS资源指示 |
| CSI | Channel-state information | 信道状态信息 |
| CSI-RS | CSI reference signal | CSI参考信号 |
| CSI-RSRP | CSI reference signal received power | CSI参考信号接收功率 |
| CSI-RSRQ | CSI reference signal received quality | CSI参考信号接收质量 |
| CSI-SINR | CSI signal-to-noise and interference ratio | CSI信噪比和干扰比 |
| CW | Codeword | 码字 |
| DAI | Downlink assignment index | 下行分配索引 |
| DC | Dual connectivity | 双连接 |
| DCI | Downlink Control Information | 下行控制信息 |
| DL | Downlink | 下行 |
| DL-SCH | Downlink shared channel | 下行共享信道 |
| DM-RS | Demodulation reference signal | 解调参考信号 |
| EPRE | Energy per resource element | 每个资源单元的能量 |
| EN-DC | E-UTRA NR dual connectivity with MCG using E-UTRA and SCG using NR | E-UTRA NR双连接（MCG使用E-UTRA，SCG使用NR） |
| FR | Frequency range | 频率范围 |
| FR1 | Frequency range 1 | 频率范围1 |
| FR2 | Frequency range 2 | 频率范围2 |
| GSCN | Global synchronization channel number | 全局同步信道号 |
| HARQ | Hybrid automatic repeat request | 混合自动重传请求 |
| HARQ-ACK | Hybrid automatic repeat request acknowledgement | HARQ确认 |
| IE | Information element | 信息单元 |
| LDPC | Low density parity check | 低密度奇偶校验 |
| L1-RSRP | Layer 1 reference signal received power | 层1参考信号接收功率 |
| LI | Layer indicator | 层指标 |
| MCG | Master cell group | 主小区组 |
| MCS | Modulation and coding scheme | 调制编码方案 |
| NN-DC | NR NR dual connectivity | NR NR双连接 |
| OFDM | Orthogonal frequency division multiplex | 正交频分复用 |
| PBCH | Physical broadcast channel | 物理广播信道 |
| PCell | Primary cell | 主小区 |
| PCH | Paging channel | 寻呼信道 |
| PDCCH | Physical downlink control channel | 物理下行控制信道 |
| PDSCH | Physical downlink shared channel | 物理下行共享信道 |
| PMI | Precoding matrix indicator | 预编码矩阵指示 |
| PRACH | Physical random-access channel | 物理随机接入信道 |
| PRB | Physical resource block | 物理资源块 |
| PRG | Physical resource block group | 物理资源块组 |
| PSCell | Primary secondary cell | 主辅小区 |
| PSS | Primary synchronization signal | 主同步信号 |
| PT-RS | Phase-tracking reference signal | 相位跟踪参考信号 |
| PUCCH | Physical uplink control channel | 物理上行控制信道 |
| PUCCH-SCell | PUCCH SCell | PUCCH 辅小区 |
| PUSCH | Physical uplink shared channel | 物理上行共享信道 |
| QCL | Quasi-collocation | 准共站址 |
| RACH | Random access channel | 随机接入信道 |
| RB | Resource block | 资源块 |
| RE | Resource element | 资源单元 |
| REG | Resource-element group | 资源单元组 |
| RI | Rank indicator | 秩指标 |
| RIV | Resource indicator value | 资源标识符值 |
| RLM | Radio link monitoring | 无线链路监测 |
| RRM | Radio resource management | 无线资源管理 |
| RS | Reference signal | 参考信号 |
| RSRP | Reference signal received power | 参考信号接收功率 |
| SCG | Secondary cell group | 辅小区组 |
| SFN | System frame number | 系统帧号 |
| SLIV | Start and length indicator value | 起始和长度指示值 |
| SPS | Semi-persistent scheduling | 半静态调度 |
| SR | Scheduling request | 调度请求 |
| SRI | SRS resource indicator | SRS资源指示 |
| SRS | Sounding reference signal | 探测参考信号 |
| SS | Synchronisation signal | 同步信号 |
| SS-RSRP | SS reference signal received power | SS参考信号接收功率 |
| SS-RSRQ | SS reference signal received quality | SS参考信号接收质量 |
| SS-SINR | SS signal-to-noise and interference ratio | SS信噪比和干扰比 |
| SSS | Secondary synchronization signal | 辅同步信号 |
| SUL | Supplementary uplink | 补充上行 |
| TA | Timing advance | 时间提前量 |
| TAG | Timing advance group | 时间提前组 |
| TB | Transport Block | 传输块 |
| TCI | Transmission Configuration Indicator | 传输配置指示 |
| TDM | Time division multiplexing | 时分复用 |
| TPC | Transmit power control | 发射功率控制 |
| TrCH | Transport channel | 传输信道 |
| UCI | Uplink control information | 上行控制信息 |
| UE | User equipment | 用户设备 |
| UL | Uplink | 上行 |
| UL-SCH | Uplink shared channel | 上行共享信道 |
| VRB | Virtual resource block | 虚拟资源块 |
| ZP CSI-RS | Zero power CSI-RS | 零功率CSI-RS |
