LTE vs. NR Comparison
| LTE | New Radio (Based on 3GPP Rel. 15) |
| Frequency band | Sub-6 GHz | Sub-6 GH乙 mmWave (up to 52.6 GHz) |
| Maximum Bandwidth (per CC) | 20 MHz | 50 MHz (@ 15 kHz), 100 MHz (@ 30 kHz), 200 MHz (@ 60 kHz), 400 MHz (@120 kHz) |
| Maximum CCs | 5 (Rel.10) / 32 (Rel.12). Current implementation is 5. | 16 (allowed BW and CCs combinations TBD) |
| Subcarrier Spacing | 15 kHz | 2n- 15 kHz TDM and FDM multiplexing |
| Waveform | CP-OFDM for DL; SC-FDMAfor UL | CP-OFDM for DL; CP-OFDM and DFT-s-OFDM for UL |
| Modulation | Up to 256 QAM DL (MOVing to 1024 QAM)； Up to 64 QAM UL | Up to 256 QAM UL & DL |
| Maximum Number of Subcarriers | 1200 | 3300 |
| Subframe Length | 1 ms (moving to 0.5 ms) | 1 ms |
| Latency (Air Interface) | 10 ms (moving to 5 ms) | 1 ms |
| Slot Length | 7 symbols in 500 卩s | 14 symbols (duration depends on subcarrier spacing) 2, 4 and 7 symbols for mini-slots |
| Channel Coding | Turbo Code (data); TBCC (control) | LDPC (data); Polar Codes (control) |
| Initial Access | No beamforming | Beamforming |
| MIMO | Up to 8x8 | Up to 8x8 |
| Reference signals | UE Specific DMRS and Cell Specific RS | Front-loaded DMRS (UE-specific) |
| Duplexing | FDD, Static TDD | FDD, Static TDD, Dynamic TDD |
LTE vs. NR Comparison
| LTE | New Radio (Based on 3GPP Rel. 15) |
| Frequency band | Sub-6 GHz | Sub-6 GH乙 mmWave (up to 52.6 GHz) |
| Maximum Bandwidth (per CC) | 20 MHz | 50 MHz (@ 15 kHz), 100 MHz (@ 30 kHz), 200 MHz (@ 60 kHz), 400 MHz (@120 kHz) |
| Maximum CCs | 5 (Rel.10) / 32 (Rel.12). Current implementation is 5. | 16 (allowed BW and CCs combinations TBD) |
| Subcarrier Spacing | 15 kHz | 2n- 15 kHz TDM and FDM multiplexing |
| Waveform | CP-OFDM for DL; SC-FDMAfor UL | CP-OFDM for DL; CP-OFDM and DFT-s-OFDM for UL |
| Modulation | Up to 256 QAM DL (moving to 1024 QAM)； Up to 64 QAM UL | Up to 256 QAM UL & DL |
| Maximum Number of Subcarriers | 1200 | 3300 |
| Subframe Length | 1 ms (moving to 0.5 ms) | 1 ms |
| Latency (Air Interface) | 10 ms (moving to 5 ms) | 1 ms |
| Slot Length | 7 symbols in 500 µs | 14 symbols (duration depends on subcarrier spacing) 2, 4 and 7 symbols for mini-slots |
| Channel Coding | Turbo Code (data); TBCC (control) | LDPC (data); Polar Codes (control) |
| Initial Access | No beamforming | Beamforming |
| MIMO | Up to 8x8 | Up to 8x8 |
| Reference signals | UE Specific DMRS and Cell Specific RS | Front-loaded DMRS (UE-specific) |
| Duplexing | FDD, Static TDD | FDD, Static TDD, Dynamic TDD |
38.521 条款 6.2 发射机功率
3GPP TS 38.521 V15.2.0 (2019-3)
1. SS通过
PDCCH DCI format 0_1为C_RNTI发送每个UL
HARQ进程的上行调度信息，按照表6.2.1.4.1-1调度UL RMC。 由于 UE 没有要发送的有效载荷和环回数据，因此 UE 在 UL RMC 上发送上行链路 MAC 填充位。
2、在每个上行调度信息中不断向UE发送上行功率控制“up”命令； 从该步骤中的第一个 TPC 命令开始，UE 至少需要 200ms 才能达到与 Power Class 3 对应的 PUMAX 级别。
3. 在无线接入模式的信道带宽内测量UE的平均功率。 测量周期应至少是一个活动子帧（1ms）和上行链路符号的连续持续时间。 对于具有瞬态周期的 TDD 符号，不在测试中。
4. 对于支持Power Class 2的UE，在适用的频段上重复步骤1~3，除了步骤2中的PUMAX级别对应Power Class 2。
更多详细内容请下载附件查看
已绑定手机
发表于 2022-7-18 15:41
