Novel multiple access technology for typical scenarios of 6G

doi:10.12267/j.issn.2096-5931.2023.09.006

Abstract

Abstract:

The multiple access technology has been regarded as a landmark technology for the upgrading of mobile communication systems. It is used to increase the system capacity or the number of access users. For the typical scenarios and key performance indicators of 6G, this paper analyzes the requirements for multiple access technology, focusing on massive communication scenarios. Then, it proposes an uncoordinated random access and transmission technology and conducts a performance analysis and a simulation evaluation to verify its feasibility in meeting 6G requirements.

Key words: 6G, massive communication, multiple access, uncoordinated random access and transmission

CLC Number:

ZHANG Yujie, KANG Shaoli, BAI Wei, PENG Ying, SUO Shiqiang, SUN Shaohui. Novel multiple access technology for typical scenarios of 6G[J]. Information and Communications Technology and Policy, 2023, 49(9): 38-45.

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URL:

http://ictp.caict.ac.cn/EN/10.12267/j.issn.2096-5931.2023.09.006

http://ictp.caict.ac.cn/EN/Y2023/V49/I9/38

Figures/Tables 7

References 16

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参数	取值
载波频率(MHz)	700
站间距(m)	500
TRxP天线数(个)	64 Tx/Rx
终端天线数(个)	2 Tx/Rx
信道模型	TDL-C
频域资源(PRB)	91
一次PUSCH传输使用的 OFDM符号数	2(1 DMRS + 1 data)
PUSCH的重复传输次数	1~7
传输块大小(bit)	64
调制方式/码率	QPSK/0.029 3
终端数量(个)	100

参数	取值
载波频率(MHz)	700
站间距(m)	500
TRxP天线数(个)	64 Tx/Rx
终端天线数(个)	2 Tx/Rx
信道模型	TDL-C
频域资源(PRB)	91
一次PUSCH传输使用的 OFDM符号数	2(1 DMRS + 1 data)
PUSCH的重复传输次数	1~7
传输块大小(bit)	64
调制方式/码率	QPSK/0.029 3
终端数量(个)	100

资源映射方式	RRC Resume的 OFDM 符号数	PUSCH 传输的 OFDM 符号数	15 kHz子载波间隔			30 kHz子载波间隔			60 kHz子载波间隔			120 kHz子载波间隔
资源映射方式	RRC Resume的 OFDM 符号数	PUSCH 传输的 OFDM 符号数	5G (ms)	URAT (ms)	时延降低 (ms)	5G (ms)	URAT (ms)	时延降低 (ms)	5G (ms)	URAT (ms)	时延降低 (ms)	5G (ms)	URAT (ms)	时延降低 (ms)
Type A	M=4	14	13.9	5.8	8.1	12.0	3.0	9.0	11.3	2.2	9.1	10.8	1.3	9.5
Type A	M=7		13.9	5.8	8.1	12.5	3.0	9.5	11.3	2.2	9.1	10.8	1.3	9.5
Type B	M=2		12.9	5.5	7.2	11.6	3.0	8.6	11.0	2.0	9.0	10.6	1.3	9.3
	M=4		13.2		7.7	11.7		8.7	11.1		9.1	10.7		9.4
	M =7		13.6		8.1	11.9		8.9	11.2		9.2	10.7		9.4

资源映射方式	RRC Resume的 OFDM 符号数	PUSCH 传输的 OFDM 符号数	15 kHz子载波间隔			30 kHz子载波间隔			60 kHz子载波间隔			120 kHz子载波间隔
资源映射方式	RRC Resume的 OFDM 符号数	PUSCH 传输的 OFDM 符号数	5G (ms)	URAT (ms)	时延降低 (ms)	5G (ms)	URAT (ms)	时延降低 (ms)	5G (ms)	URAT (ms)	时延降低 (ms)	5G (ms)	URAT (ms)	时延降低 (ms)
Type A	M=4	14	13.9	5.8	8.1	12.0	3.0	9.0	11.3	2.2	9.1	10.8	1.3	9.5
Type A	M=7		13.9	5.8	8.1	12.5	3.0	9.5	11.3	2.2	9.1	10.8	1.3	9.5
Type B	M=2		12.9	5.5	7.2	11.6	3.0	8.6	11.0	2.0	9.0	10.6	1.3	9.3
	M=4		13.2		7.7	11.7		8.7	11.1		9.1	10.7		9.4
	M =7		13.6		8.1	11.9		8.9	11.2		9.2	10.7		9.4