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A data transmission method and device

A data sending method and data technology, applied in the field of communication, can solve problems such as initiating scheduling before the data is processed and making it difficult for equipment to make scheduling decisions

Active Publication Date: 2017-12-19
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, defining the retransmission position according to the HARQ timing relationship of the existing system will lead to the problem of initiating scheduling before the data of the multiple subframes initially transmitted is processed, and it will be difficult for the device to make a correct scheduling decision. Therefore, the existing technology There is no synchronous HARQ transmission scheme suitable for multi-subframe scheduling in

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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Embodiment 1

[0108] Embodiment 1: Uplink HARQ transmission of frame structure type 1.

[0109] An uplink HARQ transmission process provided by this embodiment, such as Figure 4 shown. This embodiment takes N=4 as an example, but it is not limited thereto. Among them, the interval between the UL grant subframe and the first uplink transmission subframe in the multi-subframe set is 4 subframes, that is, k=4; the interval between the uplink transmission subframe and the feedback subframe is 4 subframes, that is, l =4 (applicable to the scenario where multiple subframes are independent processes) or the interval between the last subframe in the multi-subframe set and the feedback subframe is 4 subframes, that is, l=4 (applicable to multiple subframes as a process scenario); the interval between the uplink transmission subframe and its corresponding retransmission subframe is 12 uplink subframes, that is, L=12. In this case, L=3×N (N=4) and L>4+7.

[0110] When the terminal detects the UL ...

Embodiment 2

[0112] Embodiment 2: Uplink HARQ transmission of frame structure type 1.

[0113] An uplink HARQ transmission process provided by this embodiment, such as Figure 5 shown. This embodiment takes N=4 as an example, but it is not limited thereto. Among them, the interval between the UL grant subframe and the first uplink subframe in the multi-subframe set is 4 subframes, that is, k=4; the interval between the uplink transmission subframe and the feedback subframe is 4 subframes, that is, l=4 (applicable In the scenario where multiple subframes are independent processes) or the interval between the last subframe in the multi-subframe set and the feedback subframe is 4 subframes, that is, l=4 (applicable to the scenario where multiple subframes are a process); There are 16 uplink subframes between the uplink transmission subframe and its corresponding retransmission subframe, that is, L=16. In this case, L=2×L R8 (L R8 =8), and L>4+7.

[0114] When the terminal detects the UL...

Embodiment 3

[0116] Embodiment 3: Uplink HARQ transmission of frame structure type 2.

[0117] An uplink HARQ transmission process provided by this embodiment, such as Figure 6 shown. In this embodiment, the uplink-downlink configuration 2 is taken as an example, but it is not limited to this configuration. Among them, the interval between the UL grant subframe and the first uplink transmission subframe in the multi-subframe set is k subframes, k is the same as the definition in the background technology; the interval between the uplink transmission subframe and the feedback subframe is l subframes, l is the same as the definition in the background technology (applicable to the scenario where multiple subframes are independent processes) or the interval between the last subframe and the feedback subframe in the multi-subframe set is l subframes, and l is the same as the definition in the background technology ( Applicable to the scenario where multiple subframes are one process); the in...

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Abstract

The invention discloses a data transmission method and device for realizing synchronous HARQ transmission of a multi-subframe scheduling system. A data sending method provided by the present invention includes: sending data in the nth subframe; when the data needs to be resent, resending the data in the n+Lth subframe; where n is a natural number, L≥ M+N‑1, N is the number of subframes in the multi-subframe scheduling set, N≥1, M is the number of HARQ processes of the system during single subframe scheduling; and, the subframes are also uplink subframes or a downlink subframe.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a data transmission method and device. Background technique [0002] With the evolution of technology and the increase of data services, the concept of multi-subframe scheduling is proposed to reduce the overhead of control signaling. Multi-subframe scheduling refers to a method in which one scheduling signaling schedules N (N>1) transmission subframes. For a multi-subframe scheduling system, the base station needs to process the data of multiple subframes before initiating new scheduling or retransmission, while the existing system only needs to process the data of one subframe to initiate corresponding scheduling or retransmission. Therefore, defining the retransmission position according to the hybrid automatic retransmission (Hybrid-ARQ, HARQ) timing relationship of the existing system will lead to the problem of initiating scheduling before the data of mul...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18
Inventor 徐婧潘学明沈祖康
Owner DATANG MOBILE COMM EQUIP CO LTD
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