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Uplink transmission method, instruction method, terminal and network device

A technology of network equipment and transmission method, applied in the fields of terminal and network equipment, indication method, and uplink transmission method, capable of solving problems such as unbalanced transmission power, achieving the effect of balanced transmission power and avoiding influence

Active Publication Date: 2022-07-15
VIVO MOBILE COMM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] An embodiment of the present invention provides an uplink transmission method, an indication method, a terminal and a network device, so as to solve the problem of unbalanced transmission power existing in the current terminal uplink transmission process

Method used

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  • Uplink transmission method, instruction method, terminal and network device
  • Uplink transmission method, instruction method, terminal and network device
  • Uplink transmission method, instruction method, terminal and network device

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0069] In example 1, the DMRS configuration type is 1, that is, DMRS-Type=1, the number of symbols occupied by the pre-DMRS is 2, that is, maxLength=2, the rank number of PUSCH transmission is 2, that is, rank=2, and the target antenna port indication sent by the network device is indicated. The information is the Value values ​​8 and 9 in the preset antenna port table, that is, as shown in Table 1 below, the corresponding DMRS antenna ports (DMRS port(s)) 0 and 4, and 2 and 6, and the first target transmission code This combination makes the transmit power of the terminal unbalanced.

[0070] Table 1

[0071]

[0072] Taking 2-layer transmission and using 2 antenna ports as an example, the target transmission codebook indication information sent by the network device is TPMI index 1 and 2 in the preset transmission codebook table, that is, see Table 2 below. The transmission codebooks corresponding to TPMI indexes 1 and 2 are the first target transmission codebooks (that ...

example 2

[0079] In example 2, taking 2-layer transmission and using 4 antenna ports as an example, the target transmission codebook indication information sent by the network device is TPMI index 14 to 21 in the preset transmission codebook table, that is, as shown in Table 4 below, The transmission codebooks corresponding to TPMI indexes 14 to 21 in Table 4 are the first target transmission codebooks (that is, the underlined part in Table 4), corresponding to the power imbalance is not enabled, or the transmission code of the terminal whether to use power balance transmission is not configured. precoding.

[0080] Table 4

[0081]

[0082] Table 4

[0083] After the correction factor, that is, the diagonal matrix (1,j,j,...,j), the above-mentioned first target transmission codebook can be modified into the second target transmission codebook, which is underlined in Table 5 below. As shown in part, that is, the second target transmission codebook is the product of the first target t...

example 3

[0087] In example 3, the DMRS configuration type is 1, that is, DMRS-Type=1, the number of symbols occupied by the pre-DMRS is 2, that is, maxLength=2, the rank number of PUSCH transmission is 3, that is, rank=3, and the target antenna port indication sent by the network device is indicated. The information is the Value values ​​1 and 2 in the preset antenna port table, that is, as shown in Table 6 below, the corresponding DMRS antenna ports (DMRS port(s)) 0, 1 and 4, and 2, 3 and 6, are the same as the first The combination of a target transmission codebook makes the transmit power of the terminal unbalanced.

[0088] Table 6

[0089] Value …… DMRS port(s) …… 1 …… 0,1,4 …… 2 …… 2,3,6 ……

[0090] Or, the DMRS configuration type is 2, that is, DMRS-Type=2, the number of symbols occupied by the pre-DMRS is 2, that is, maxLength=2, the rank number of PUSCH transmission is 3, that is, rank=3, and the target antenna port indication information sent ...

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Abstract

The present invention provides an uplink transmission method, an indication method, a terminal and a network device, wherein the uplink transmission method comprises: determining a correction factor of a first target transmission codebook; Modify the codebook to obtain a second target transmission codebook; and perform uplink transmission according to the second target transmission codebook. The embodiment of the present invention can balance the transmission power in the uplink transmission process of the terminal, and avoid the influence on the performance of the terminal caused by the imbalance of the transmission power.

Description

technical field [0001] The present invention relates to the field of communication technologies, and in particular, to an uplink transmission method, an indication method, a terminal and a network device. Background technique [0002] Currently, in a New Radio (NR) mobile communication system, demodulation reference signal (Demodulation Reference Signal, DMRS) antenna ports are all orthogonal. The DMRS antenna ports can achieve orthogonality by occupying different time-frequency resource positions, and when the DMRS antenna ports occupy the same time-frequency resource positions, orthogonality can be achieved by using different spreading codes. [0003] However, in the uplink transmission process of the terminal, when a specific set of DMRS antenna ports (for example, different DMRS antenna ports occupy the same time-frequency resources, but are orthogonal to a certain group of spreading codes), when combined with a specific precoding codebook, it is possible to Causes the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W72/04
CPCH04L5/0053H04L5/0048H04W72/23
Inventor 孙晓东刘昊孙鹏
Owner VIVO MOBILE COMM CO LTD