A data transmission method and device

A data transmission method and a data packet technology, which are applied in the field of data transmission methods and devices, can solve problems such as narrowing down, reducing the network data transmission rate, and the number of access resources cannot be dynamically adjusted, so as to reduce interference and improve correct decoding The effect of probability

Active Publication Date: 2022-04-19
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the number of access resources needs to be configured by the base station through system messages, once a large number of access resources are configured through system messages, when the number of users accessing at the same time is not large, the number of access resources cannot be dynamically adjusted. As a result, the configured access resources cannot be fully utilized. On the other hand, since access resources are divided among network resources, if the number of network resources allocated to access resources is too large, the number of available network resources will decrease. will be scaled down accordingly, reducing the network data transfer rate

Method used

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  • A data transmission method and device
  • A data transmission method and device
  • A data transmission method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0028] An embodiment of the present invention provides a data transmission method, such as figure 1 As shown, the method includes:

[0029] Step 101, the terminal selects reference information from a reference information set corresponding to a preset reference information type.

[0030] Specifically, the preset reference information types include: reference signal sequence, scrambling code sequence, transmission resource set, transmission block size, phase rotation value, reference power value of transmission data packet, and 7 reference information types of boosted power value of transmission data packet At least one; wherein, the kth reference information type includes X k reference information, X k is a positive integer, k=1, 2...and 7. The quantities of reference information included in different reference information types may be the same or different.

[0031] Specifically, assuming that the preset reference information type includes the reference information type o...

Embodiment 2

[0060] The embodiment of the present invention provides another data transmission method, such as figure 2 As shown, the method includes:

[0061] Step 201, the base station receives the first target data packet sent by the terminal; wherein, the first target data packet is the reference information obtained by the terminal according to the reference information and the data packet to be sent, and the terminal selects from the reference information set corresponding to the preset reference information type of.

[0062] In the data transmission method provided by the embodiment of the present invention, the base station receives the first target data packet sent by the terminal; wherein, the first target data packet is the reference information obtained by the terminal according to the reference information and the data packet to be sent, and is the terminal from the preset reference information type selected from the corresponding reference information set. It can be seen f...

Embodiment 3

[0078] In this embodiment, the target transmission mode is a transmission mode in which a reference signal sequence is added to a data packet, and the base station carries transmission mode information in a system message, which indicates whether the UE uses a reference signal sequence selected from multiple reference signal sequences It is sent together with the data packet; when used, the base station also carries information of multiple reference signal sequences in the system message.

[0079] The specific application is as follows:

[0080] In the existing enhanced Machine Type of Communication (eMTC) system, the cyclic shift amount of the reference signal sequence corresponding to the data packet is a fixed value, which makes UE A and UE B sending access messages on the same resource , the same reference signal sequence will be sent on the same resource, which will cause the data packets of UE A and UE B to interfere with each other, and it is difficult for the base stat...

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Abstract

The invention discloses a data transmission method and device, comprising: a terminal selects reference information from a reference information set corresponding to a preset reference information type; obtains a first target data packet according to the selected reference information and a data packet to be sent; Send the first target data packet. It can be seen from the embodiment of the present invention that since the reference information is selected by the terminal in the reference information set corresponding to the preset reference information type, the probability of selecting the same reference information between different terminals is low, and when the reference information selected between different terminals When the information is different, the interference between data packets will be greatly reduced, thereby increasing the probability that the data packets are correctly decoded.

Description

technical field [0001] Embodiments of the present invention relate to the field of communication technologies, and in particular, to a data transmission method and device. Background technique [0002] The general process of the existing user equipment (User Equipment, UE) accessing the wireless network is described as follows: UE randomly selects an access resource from the access resource pool configured by the base station to send an access message (message 1); Access message, sending a feedback message (message 2) for each detected access message, where message 2 includes uplink timing adjustment information and information about resources occupied by the UE when sending data packets (message 3); Send message 3 to the base station on the resource; when the base station successfully decodes message 3, the base station sends a response message (message 4) to the terminal. In this process, since the access resource pool is a shared resource of all UEs, when the number of U...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L5/00H04W72/04H04W72/12
CPCH04L5/0048H04W72/0466H04W72/20H04W74/004H04W74/0833H04W24/08H04W72/0446H04W24/10H04W72/02H04W72/1268H04W72/53H04W72/535
Inventor 戴博袁志锋刘锟杜忠达袁弋非
Owner ZTE CORP
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