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Data transmission method, evolved base station and user equipment

A data transmission method and evolved base station technology, applied in digital transmission systems, transmission systems, network data management, etc., can solve data transmission conflicts, send data packets, and UE cannot retransmit data packets according to the original plan, etc., to achieve The effect of avoiding conflict and improving flexibility

Active Publication Date: 2016-02-03
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] When the UE receives the NACK instruction sent by the eNB, the UE will retransmit the data packet to the eNB on the corresponding uplink subframe. After introducing dynamic subframes, if the uplink subframe that the UE originally planned to retransmit the data packet to the eNB is A dynamic subframe, and the dynamic subframe has been adjusted to a downlink subframe by the eNB, there will be a data transmission conflict, so that the UE cannot retransmit the data packet according to the original plan, or the eNB cannot deliver the data packet according to the original plan, thus Affects data transfer performance and scheduling flexibility

Method used

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  • Data transmission method, evolved base station and user equipment
  • Data transmission method, evolved base station and user equipment
  • Data transmission method, evolved base station and user equipment

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Embodiment Construction

[0029] The embodiments of the present invention provide a data transmission method, evolved base station, and user equipment, which can avoid data transmission conflicts and improve data transmission performance and scheduling flexibility.

[0030] See figure 1 An embodiment of the data transmission method of the present invention includes:

[0031] 101. If the eNB does not correctly receive the data packet sent by the UE in the first subframe, the eNB selects the second subframe from multiple subframes.

[0032] The eNB communicates with the UE in a TDD mode, and the UE can send data packets to the eNB through a fixed uplink subframe or a dynamic subframe configured as an uplink.

[0033] In this embodiment, the UE sends a data packet to the eNB on the first subframe. The first subframe may be any fixed uplink subframe in the TDD radio frame, or a dynamic subframe configured as an uplink. The place is not limited.

[0034] It should be noted that the data packet sent by the UE in the ...

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Abstract

The embodiments of the present invention disclose a data transmission method, an evolved base station and user equipment, which can avoid data transmission conflicts and improve data transmission performance and scheduling flexibility. The method of the embodiment of the present invention includes: if the evolved base station eNB does not correctly receive the data packet sent by the user equipment UE on the first subframe, the eNB selects the second subframe from multiple subframes; the eNB sends scheduling signaling to the UE , so that the UE sends a retransmission packet of the data packet on the second subframe. Embodiments of the present invention further provide an evolved base station and user equipment. The embodiments of the present invention can effectively avoid data transmission conflicts and improve data transmission performance and scheduling flexibility.

Description

Technical field [0001] The present invention relates to the field of communications, in particular to a data transmission method, evolved base station and user equipment. Background technique [0002] The duplex mode of the Long Term Evolution (LTE) system mainly includes a frequency division duplex (FDD, Frequency Division Duplexing) mode and a time division duplex (TDD, Time Division Duplexing) mode. [0003] In the TDD mode, the evolved base station (eNB) and the user equipment (UE, User Equipment) communicate on the same frequency, where the uplink and downlink data transmissions are separated in time. Specifically, a radio frame contains two half frames, each The half frame contains five subframes. The TDD mode supports different uplink and downlink configurations. The uplink and downlink configurations can be adjusted semi-statically through system messages according to the average uplink and downlink service requirements. [0004] The LTE TDD system includes a total of seven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L1/18H04L1/16H04W72/12
CPCH04L1/1887H04W72/02H04W88/08H04L1/1854H04L1/1864H04W72/23H04W28/04H04L1/1896H04W8/30
Inventor 官磊吕永霞
Owner HUAWEI TECH CO LTD