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Data transmission method and device

A data transmission method and data technology, applied in the field of communication, can solve problems such as the inability to guarantee the reliability of data received by terminal equipment, the inability to know the status of data reception, and the inability to support hybrid automatic retransmission requests, etc.

Active Publication Date: 2022-01-14
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004]Currently, in MBMS or MBS, broadcast / multicast does not support hybrid automatic repeat request (HARQ) feedback, that is, terminal devices do not need to Feedback to the network device whether the reception is successful, the network device cannot know the reception status of the data, and cannot judge whether to retransmit, so the reliability of the data received by the terminal device cannot be guaranteed

Method used

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Examples

Experimental program
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example 11

[0359] Example 1.1, the first communication device determines the first HARQ process based on the priority of data.

[0360] In a possible design 1, the second data has the lowest priority, or the multicast or unicast corresponding to the second data has the lowest priority, and the first communication device determines the first HARQ process. Alternatively, the first communication device determines the first HARQ process from the HARQ processes associated with the multicast and / or unicast with the lowest priority. Or, the first communication device determines the HARQ process associated with the data with the lowest priority as the first HARQ process, or determines the first HARQ process from the HARQ processes associated with the data with the lowest priority.

[0361]The lowest priority of the second data may be understood as: among the data corresponding to the HARQ process satisfying the second condition, the second data has the lowest priority.

[0362] The lowest prior...

example 12

[0375] Example 1.2, the first communication device determines the first HARQ process based on the priority of the data and the preset priority.

[0376] In the first possible design, the priority of the first data is higher than the first preset priority, and / or, the priority of the second data is lower than the second preset priority, and the first communication device determines the first HARQ process .

[0377] Exemplarily, the first communication device needs to receive the first data, all HARQ processes are occupied, the priority of the first data is higher than the first preset priority, and / or, the priority of the second data is lower than the second preset priority The priority is set, and the first communication device determines the first HARQ process.

[0378] Exemplarily, the first communication device needs to receive the first data, the first data is multicast data, the HARQ process is occupied, the priority of the first data is higher than the first preset prio...

example 22

[0419] In implementation manner 2, the first communication device determines the first HARQ process, which may have the following two examples.

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Abstract

The invention provides a data transmission method and a device. The method comprises the steps of a first communication apparatus determining a first HARQ process according to preemption mode information and / or preemption principle information; the first communication device receives first data through the first HARQ process; wherein the first HARQ (Hybrid Automatic Repeat reQuest) process is an occupied HARQ process. In the technical scheme, a first communication device provides a behavior for the first communication device when HARQ processes are all occupied and need to receive first data from a second communication device, and the first data are received through a first HARQ process. The data receiving reliability of the first communication device is improved, and the data receiving time delay of the first communication device is reduced.

Description

technical field [0001] The present application relates to the technical field of communications, and in particular to a data transmission method and device. Background technique [0002] Multimedia broadcast multicast service (MBMS) or multicast broadcast service (multicast and broadcast services, or, multicast / broadcast services, or, multicast-broadcast services, MBS) can effectively utilize communication resources. The network provides a point-to-multipoint service in which a data source sends data to multiple users, realizes resource sharing, and improves resource utilization, especially air interface resources. [0003] Generally, in the MBMS or MBS scenario, the information can be broadcast to all users, or sent to a group of subscription subscribers who pay to watch, which can help operators to carry out multimedia advertisements, free and premium TV channels, and MMS group sending, etc. commercial application. [0004] Currently, in MBMS or MBS, broadcast / multicast ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W4/06H04W24/02H04L1/18
CPCH04W4/06H04W24/02H04L1/1812H04L1/18
Inventor 刘南南张向东常俊仁曾清海
Owner HUAWEI TECH CO LTD