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A signal transmission method and device

A signal transmission and signal technology, applied in the field of communications, can solve problems such as difficulty in supporting low-latency services

Active Publication Date: 2021-07-06
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, due to the overhead of the frame structure, the longer the basic resource unit, the smaller the overhead, and the longer the basic resource unit, the harder it is to support low-latency services. This is a contradiction

Method used

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  • A signal transmission method and device
  • A signal transmission method and device
  • A signal transmission method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0358] see Figure 4 , the present invention proposes a signal transmission method, the method comprising:

[0359] In this example, the combination order of subframes is subframe 1, subframe 2, and subframe 3, where subframe 1 is a short TTI, subframe 2 and subframe 3 are long TTIs; where a short TTI includes a BRU, and a short TTI The feedback of the TTI follows the timing of n+2; the long TTI includes four BRUs, and the feedback follows the timing of n+1, where n=1 and 2 are both length units relative to the TTI type.

[0360] Each TTI includes a DC (downlink control) area, a Data (data) area and a UC (uplink control) area. Wherein, Data may be an uplink data area or a downlink data area.

[0361] Step 410, the terminal receives DL Control and DL data that need to be fed back in the Data area of ​​subframe 1;

[0362] According to the preset feedback mechanism, the terminal needs to send feedback signals corresponding to DL Control and DL data that need to be fed back in...

Embodiment 2

[0397] In this embodiment, another multiplexing solution in which long and short subframe TTIs belong to the same user is introduced.

[0398] There may also be a possible solution to the mixture of long and short subframes, that is, the long TTI transmits the control information that needs to be fed back in the short TTI, and needs to be multiplexed with other feedback information of the short TTI. Such as Figure 7 As shown, the long TTI is followed by 4 short TTIs. According to the feedback timing of the long TTI n+1, the feedback is falling into the uplink time slot of the fourth short TTI, which needs to be multiplexed with the uplink control information originally undertaken by the short TTI. .

Embodiment 3

[0400] In this embodiment, a solution that the long and short subframe TTIs do not belong to the same user is introduced.

[0401] In the case that the long and short subframes belong to different users, for example, the short subframe is a low-latency Internet of Things (uMTC) user, and the long subframe is a mobile user (MBB) with general wide-area coverage. The usage is consistent with the method that the long and short subframe TTIs belong to the same user. But because the two users are separated, the terminal capabilities of the two users, such as whether they have self-feedback, cannot be directly transmitted, and the acquisition of their prior information is more complicated. When the feedback signaling of the uMTC user needs to be carried in the data part of the MBB user, and the terminal capability of the uMTC user cannot be directly transmitted to the MBB user, it needs to be conveyed by the base station. The base station notifies the user of the allocation mode of ...

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Abstract

The invention discloses a signal transmission method and device. The method includes: determining a punctured area based on a basic resource unit BRU; and transmitting a signal in a non-punched area in a subframe. Through the scheme of the present invention, it provides a feedback signal transmission mode in the case of mixed use of long and short subframes, or other signals that require priority processing. The law of mixed appearance and combination of long and short subframes may be purely dynamic or In the case of semi-static adjustment, according to the preset feedback strategy, holes are punched at the predetermined position to obtain transmission resources, which avoids the complicated search method of the feedback position, ensures the timely transmission of the feedback signal, and solves the problems in the existing feedback mode. The problem of resource conflicts.

Description

technical field [0001] The invention relates to the field of communication, in particular to a signal transmission method and device. Background technique [0002] The new generation of mobile communication systems will carry out system networking on carrier frequencies higher than those used by 2G, 3G, and 4G systems. Currently, the frequency bands that have been widely agreed in the industry and recognized by international organizations are mainly 3GHz~6GHz, 6GHz~100GHz. The first frequency band basically belongs to the centimeter wave band and the millimeter wave band, and its propagation characteristics are significantly different from those of the lower frequency bands. Compared with the symmetrical carrier deployment of FDD, the channel reciprocity of the TDD system is more conducive to playing a role in such high frequency bands. At the same time, the TDD mode is also beneficial to reduce the cost and system overhead of using a large-scale antenna array. Therefore, t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W72/04H04L5/00
CPCH04L5/0048H04L5/0055H04W72/0446H04W72/20H04W72/04
Inventor 郝鹏张峻峰李剑鲁照华
Owner ZTE CORP
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