Telecommunications Science ›› 2023, Vol. 39 ›› Issue (3): 115-123.doi: 10.11959/j.issn.1000-0801.2023044
• Research and Development • Previous Articles Next Articles
Guanghai LIU, Tian XIAO, Bei LI, Xinzhou CHENG, Yongbei XUE, Yi LI, Xiaomeng ZHU, Yuting ZHENG
Revised:
2023-03-03
Online:
2023-03-20
Published:
2023-03-01
Supported by:
Guanghai LIU, Tian XIAO, Bei LI, Xinzhou CHENG, Yongbei XUE, Yi LI, Xiaomeng ZHU, Yuting ZHENG. Research on 5G service coverage capability before 4G carrier re-farming to 5G[J]. Telecommunications Science, 2023, 39(3): 115-123.
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协议层/子层 | 字段长度 | |
未使用RoHC技术 | 使用RoHC技术 | |
语音业务/20 ms | 23.85 kbit/s→488 bit/s | 23.85 kbit/s→488 bit/s |
实时传输协议(real-time transport protocol,RTP)头 | 12 byte | 40 bit |
用户数据报协议(user datagram protocol,UDP)头 | 8 byte | |
网际互连协议(internet protocol,IP)头(IPv4/IPv6) | 20 byte /40 byte | |
分组数据汇聚协议(packet data convergence protocol,PDCP)序列号 | 12 byte | 12 byte |
非确认模式的无线电链路控制(radio link control,RLC) | 2 byte | 2 byte |
媒体访问控制(media access control,MAC)子层 | 3 byte | 3 byte |
MAC头(PHR+BSR) | 48 bit | 48 bit |
包长度/20 ms(IPv4)(一般/最大) | 864 bit/912 bit | 584 bit/632 bit |
包长度/20 ms(IPv6)(一般/最大) | 1 024 bit/1 072 bit |
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覆盖场景 | 乡村 | 乡村 | 乡村 | 乡村 | |
覆盖水平 | 1 Mbit/s@95% | 3 Mbit/s@90% | 1 Mbit/s@95% | 3 Mbit/s@90% | |
基站类型 | L900 2T2R | L900 2T2R | NR900 4T4R | NR900 4T4R | |
链路预算信道 | 上行PUSCH | 上行PUSCH | 上行PUSCH | 上行PUSCH | |
用户感知速率 | Mbit/s | 1 | 3 | 1 | 3 |
载波频率 | GHz | 0.915 | 0.915 | 0.915 | 0.915 |
基站侧天线配置 | # | 2T2R | 2T2R | 4T4R | 4T4R |
终端侧天线配置 | # | 1T2R | 1T2R | 1T4R | 1T4R |
所需RB数 | # | 10 | 30 | 10 | 30 |
调制方式 | QPSK 0.25 | QPSK 0.25 | QPSK 0.25 | QPSK 0.25 | |
Tx 等效全向辐射功率(equivalent | dBm | -0.79 | -5.56 | -0.79 | -5.56 |
isotropic radiated power,EIRP) | |||||
热噪声功率谱密度 | dBm/Hz | -132.24 | -132.24 | -132.24 | -132.24 |
所需SINR | dB | 0.24 | 0.24 | -2.76 | -2.76 |
基站接收机灵敏度 | dBm | -129.20 | -129.20 | -132.20 | -132.20 |
小区覆盖概率 | 95% | 90% | 95% | 90% | |
边缘覆盖概率 | 87% | 75% | 87% | 75% | |
阴影衰落余量 | dB | 9.0 | 5.4 | 9.0 | 5.4 |
切换增益/阴影衰落补偿 | dB | 3 | 3 | 3 | 3 |
最大可用传播损耗 | dB | 125.90 | 124.74 | 128.90 | 127.74 |
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覆盖场景 | 乡村 | 乡村 | 乡村 | 乡村 | |
覆盖水平 | 1 Mbit/s@95% | 3 Mbit/s@90% | 1 Mbit/s@95% | 3 Mbit/s@90% | |
(达到1 Mbit/s的 | (达到3 Mbit/s的 | (达到1 Mbit/s的 | (达到3 Mbit/s的 | ||
概率不低于95%) | 概率不低于90%) | 概率不低于95%) | 概率不低于90%) | ||
基站类型 | L900 2T2R | L900 2T2R | NR900 4T4R | NR900 4T4R | |
最大可用传播损耗/dB | 125.90 | 124.74 | 128.90 | 127.74 | |
基准覆盖 | Okumura-Hata | 1 966 | 1 821 | 2 398 | 2 222 |
能力/m | 3GPP RMa-NLOS | 1 530 | 1 428 | 1 829 | 1 707 |
不同模型加权 | 50% : 50% | 1 748 | 1 625 | 2 114 | 1 965 |
后的覆盖能力 | 60% : 40% | 1 792 | 1 664 | 2 170 | 2 016 |
估算结果/m | 80% : 20% | 1 879 | 1 742 | 2 284 | 2 119 |
… | … | … | … | … |
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