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Demodulation method and demodulation device for downlink data, and terminal

A technology of downlink data and demodulation method, applied in the field of communication, can solve problems such as large delay and no solution, and achieve the effect of avoiding additional delay and reducing the probability of data retransmission

Active Publication Date: 2017-05-10
MEIZU TECH CO LTD
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  • Claims
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Problems solved by technology

The base station will send the data information to the terminal again at the next appropriate sTTI, and the terminal needs to wait for a period of time before being allocated resources for retransmission. This processing method will bring a large delay, and there is currently no effective solution to this problem. Program

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  • Demodulation method and demodulation device for downlink data, and terminal
  • Demodulation method and demodulation device for downlink data, and terminal
  • Demodulation method and demodulation device for downlink data, and terminal

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Embodiment Construction

[0032] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0033] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0034] figure 2 A schematic flowchart of a downlink data demodulation method according to an embodiment of the present invention is shown.

[0035] Such as figure 2 As shown, the downlink data d...

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Abstract

The invention provides a demodulation method and a demodulation device for downlink data, and a terminal. The demodulation method for the downlink data comprises the following steps of receiving first exclusive downlink control information, second exclusive downlink control information and downlink data which are sent by a base station when the terminal is scheduled in a target first-class TTI; detecting whether the second exclusive downlink control information can be demodulated correctly; determining actual downlink control information needed by the terminal according to the first exclusive downlink control information and the target second exclusive downlink control information when the second exclusive downlink control information cannot be correctly demodulated, wherein the target second exclusive downlink control information includes second exclusive downlink control information which is correctly demodulated in a process of scheduling the terminal by at least one first-class TTI; and demodulating downlink data based on the actual downlink control information. Through the technical scheme of the invention, the probability of sTTI data retransmission can be reduced and the unnecessary additional time delay can be avoided.

Description

technical field [0001] The present invention relates to the technical field of communications, and in particular, to a downlink data demodulation method, a downlink data demodulation device and a terminal. Background technique [0002] In the current LTE (Long Term Evolution, long-term evolution) system, the downlink data sent by the base station to the terminal is carried on the PDSCH (Physical Downlink Shared Channel, physical layer downlink shared channel), and corresponding to the downlink data is also in the The DCI (Downlink Control Information, downlink control information) transmitted on the PDCCH (Physical Downlink Control Channel, physical layer downlink control channel) transmitted by the PDSCH in the same TTI (Transmission Time Interval, transmission time interval). The DCI is used to indicate various information required for the terminal to demodulate the corresponding downlink data, such as the RB (Resource Block, resource block) where the downlink data is loca...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L1/00H04W72/12H04W76/04
CPCH04L1/0023H04W72/1273H04W76/28H04W72/20
Inventor 不公告发明人
Owner MEIZU TECH CO LTD
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