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Data transmission method, device and system, terminal equipment and network side equipment

A data transmission method and technology of network-side equipment, applied in electrical components, wireless communication, error prevention/detection using return channels, etc., can solve the problems of high communication frequency band, insufficient uplink coverage, and limited user transmission power in 5G network. problem, to achieve the effect of improving the utilization of uplink resources

Pending Publication Date: 2022-07-19
CHINA TELECOM CORP LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The communication frequency band of the 5G network is high, the transmission power of the user is limited, the uplink coverage is insufficient, and the communication quality of the user at the edge of the cell is seriously degraded
Operators must reduce the distance between stations to meet user needs, resulting in increased costs for operators to deploy and maintain 5G networks

Method used

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  • Data transmission method, device and system, terminal equipment and network side equipment
  • Data transmission method, device and system, terminal equipment and network side equipment
  • Data transmission method, device and system, terminal equipment and network side equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0093] Figure 4 A schematic diagram of the comparison between the disclosed data transmission method and the Repetition Type B transmission method. like Figure 4 As shown, in a common DDDSU frame structure, D is a downlink time slot, S is a special time slot, and U is an uplink time slot. The S time slot adopts the configuration method of DL (downlink symbol):GP (guard interval symbol):UL (uplink symbol)=10:2:2, symbols 0-9 are downlink symbols, symbols 10-11 are guard interval symbols, and symbols 12-13 are upstream symbols. The fifth symbol (symbol 4) in the U slot is also unavailable for special reasons.

[0094] like Figure 4As shown in the second row, with the 13th symbol (symbol 12) of the S slot as the starting point, and using the existing Repetition Type B in the standard, S=12, L=4, and the number of repetitions can be set to 4. It is possible to use more uplink resources, which leads to the fact that the first Nominal Repetition spanning the time slot must b...

Embodiment 2

[0098] Figure 5 It is a schematic diagram of transmitting code blocks after using the data transmission methods in some embodiments of the present disclosure. like Figure 5 As shown, in a common DDDSU frame structure, D is a downlink time slot, S is a special time slot, and U is an uplink time slot. The S time slot adopts a configuration manner of DL (downlink symbol):GP (guard interval symbol):UL (uplink symbol)=10:2:2.

[0099] like Figure 5 As shown in the second row, taking the thirteenth symbol (symbol 12) of the S slot as the starting point, and using the existing Repetition Type B in the standard, S=12, L=4, and 4 repetitions can be configured.

[0100] And if Figure 5 As shown in the third row, S=12, L=16 can be configured, and the number of repetitions is 1. Therefore, in the above-mentioned embodiments of the present disclosure, a code block length of 16 symbols can be used to jointly encode data in two time slots, thereby bringing about a coding gain. exis...

Embodiment 3

[0102] Image 6 It is a schematic diagram of transmitting code blocks after adopting the medium data transmission method according to some embodiments of the present disclosure. like Image 6 As shown, when the frame structure of DDDSUDDSUU is adopted, for the last two U time slots, the code block length of 28 symbols can be used to jointly encode the data in the two time slots, and the DMRS can be used for joint channel estimation to obtain better performance.

[0103] Image 6 Embodiment Because the number of symbols is too many, according to the simulation results, 2 DMRS symbols are not enough to bring accurate channel estimation results, and 3 to 4 DMRS symbols are needed to support the channel estimation accuracy.

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Abstract

The invention relates to a data transmission method, device and system, terminal equipment and network side equipment. The data transmission method comprises: acquiring a repeated transmission parameter sent by a network side device, the repeated transmission parameter comprising a symbol number of repeated transmission of a physical uplink shared channel (PUSCH), a transmission start position of the PUSCH and a number of repeated transmission times of the PUSCH; and according to the repeated transmission parameter, carrying out time slot-allowed repeated transmission of the PUSCH. According to the invention, cross-slot continuous transmission of data in PUSCH repeated transmission is allowed, and the data is not split into two code blocks, so that the utilization rate of uplink resources is improved.

Description

technical field [0001] The present disclosure relates to the field of wireless communication, and in particular, to a data transmission method, apparatus and system, terminal equipment and network side equipment. Background technique [0002] The communication frequency band of 5G network is high, the transmission power of users is limited, the uplink coverage is insufficient, and the communication quality of users at the edge of the cell is seriously degraded. Operators must reduce the distance between sites to meet user needs, resulting in higher costs for operators to deploy and maintain 5G networks. SUMMARY OF THE INVENTION [0003] The related art newly defines the feature of PUSCH (Physical Uplink Shared Channel, Physical Uplink Shared Channel) Repetition Type B (repetition type B) in the just-frozen 3GPP Rel-16 version TS 38.214, but Repetition Type B still has many deficiencies. Repetition (repetitive transmission) based on mini-slot (mini-slot) makes more full us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/18H04W72/04
CPCH04L1/18H04L1/1854H04W72/0446
Inventor 尹航朱剑驰李南希郭婧佘小明陈鹏
Owner CHINA TELECOM CORP LTD