A data transmission method, communication equipment and a data transmission system

A data transmission method and communication equipment technology, applied in the direction of digital transmission system, transmission system, transmission link error control system, etc., can solve problems such as relatively large network service interference, low network service quality of user equipment, and inability to complete data transmission, etc. , to achieve the effect of increasing the probability of success and reducing the probability of retransmission

Active Publication Date: 2019-01-01
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In a wireless communication system, when the user equipment is at the edge of the network coverage, or when the surrounding environment of the user equipment interferes greatly with the network service, the network service quality of the user equipment is often low
As a result, when the base station sends data to the user equipment, it usually requires multiple retransmissions to complete the data transmission, and even after multiple retransmissions, the data transmission still cannot be completed

Method used

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  • A data transmission method, communication equipment and a data transmission system
  • A data transmission method, communication equipment and a data transmission system
  • A data transmission method, communication equipment and a data transmission system

Examples

Experimental program
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no. 1 example

[0041] The embodiment of the present invention provides a data transmission method. Various embodiments of the present invention are described by taking the network side device to send data to the target device, and the cooperation device helping the network side device to send data to the target device as an example, as shown in figure 2 As shown, in the first embodiment of the data transmission method, the method includes:

[0042] S100, the network side device sends data to be transmitted to the cooperation group. The cooperation group includes a cooperation device and a target device. The number of cooperative devices is at least one. For example, if figure 1 As shown, the collaboration device is set to two.

[0043] In an embodiment, the cooperation group may be configured by a network side device. The network side device may determine the cooperation device and the cooperation group identifier for the target device according to the communication state of the target ...

Embodiment approach 1

[0058] Embodiment 1, fast cooperation mode (Faster Cooperation Mode, FCM), the transmission time interval TTI adopted by the transmission between the cooperation device and the target device is smaller than the transmission between the target device and the network side device The TTI used. That is, the TTI used by the side link is smaller than the TTI used by the transmission between the target device and the network side device. TTI refers to the length of time required for an independently decoded transmission in wireless communications. Using the fast cooperation mode, the cooperative transmission can be quickly realized without increasing the delay without changing the HARQ feedback duration and the HARQ process of the data to be transmitted sent by the target device to the network side device.

[0059] In this embodiment, the transmission time interval adopted by the side link is defined as TTI1, and the transmission time interval adopted by the transmission between the...

Embodiment approach 2

[0068] Embodiment 2: Longer Cooperation Mode (Longer Cooperation Mode, LCM), the moment when the target device receives the data to be transmitted sent by the network side device is defined as a third moment, and the third moment to the first The duration between times is longer than the time required for the target device to receive, process and verify the data to be transmitted sent by the network side device, and the target device is between the third moment and the first moment At least one subframe is not used for processing the data to be transmitted sent by the network side device, so that the target device has enough time to receive, process and verify the data to be transmitted forwarded by the cooperation device. By adopting the extended cooperation mode, the TTI adopted by the side link transmission of the cooperation device and the target device can not be changed, and the cooperative transmission can be realized without increasing the processing complexity.

[006...

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Abstract

The invention discloses a data transmission method, and communication equipment and system. The method includes the following steps: cooperative equipment and target equipment receive to-be-transmitted data sent by network side equipment, and the time when the target equipment gives feedback to the network side equipment whether the to-be-transmitted data is correctly received is defined as a first moment; before the first moment, the cooperative equipment sends the to-be-transmitted data to the target equipment; and the target equipment receives, processes and verifies the to-be-transmitted data sent by the cooperative equipment before the first moment. Even though the target equipment cannot correctly receive the to-be-transmitted data sent by the network side equipment, the target equipment does not need to request the network side equipment to resend the to-be-transmitted data if the target equipment can correctly receive the to-be-transmitted data forwarded by the cooperative equipment, so that the success probability of the target equipment to receive data can be effectively enhanced, and the probability of retransmission of the network side equipment to the target equipmentcan be reduced.

Description

technical field [0001] The present invention relates to the field of communication, and more specifically, to a data transmission method, communication equipment and a data transmission system. Background technique [0002] In a wireless communication system, when the user equipment is at the edge of network coverage, or when the surrounding environment of the user equipment interferes greatly with network services, the network service quality of the user equipment is often low. As a result, when the base station sends data to the user equipment, multiple retransmissions are usually required to complete the data transmission, and even after multiple retransmissions, the data transmission still cannot be completed. Contents of the invention [0003] In view of this, the present application provides a data transmission method, a communication device and a data transmission system, aiming at increasing the success probability of data transmission and reducing the probability ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04B7/026H04L1/00H04L1/16H04L5/00H04W72/04H04W72/12H04W88/04
CPCH04B7/026H04L1/0007H04L1/0061H04L1/1607H04L5/0055H04W72/0446H04W72/1273H04W88/04H04W72/121H04W16/14H04L5/001H04L5/0035H04L1/1854H04L2001/0097H04L2001/0093H04L1/02H04L1/1812H04W92/18
Inventor 苏宏家庞继勇向铮铮
Owner HUAWEI TECH CO LTD
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