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Data sending and receiving method and device

A data transmission method and data technology, which are applied to digital transmission systems, electrical components, transmission systems, etc., can solve the problems of wasting OFDM symbols and unable to send data normally, and achieve the effect of ensuring correct transmission and saving transmission symbol resources.

Active Publication Date: 2014-09-17
DATANG MOBILE COMM EQUIP CO LTD
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Problems solved by technology

[0015] In summary, the OFDM symbols or DFT-S-OFDM symbols on both sides of the D2D subframe cannot send data normally. One method is to use only the middle OFDM symbols or DFT-S-OFDM symbols to send data, but it will waste two OFDM symbols. Symbol or DFT-S-OFDM symbol resources

Method used

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  • Data sending and receiving method and device
  • Data sending and receiving method and device
  • Data sending and receiving method and device

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Embodiment Construction

[0044] In order to save system transmission symbol resources and ensure correct data transmission, an embodiment of the present invention provides a data sending method and a data receiving method. The method can be applied to D2D transmission, and certainly can also be applied to other types of data transmission. The transmission symbols in the present invention may be OFDM symbols or DFT-S-OFDM symbols, and of course may refer to any other data transmission units in a subframe.

[0045] see Figure 5 , the data sending method provided by the embodiment of the present invention includes the following steps: the sending end sends data through the transmission symbols in the subframe, wherein the data sent on the nth transmission symbol and the kth transmission symbol of the subframe are the same, so that the receiving end receives the part of the time domain signal of the nth transmission symbol in the subframe, receives the part of the time domain signal of the kth transmiss...

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Abstract

The embodiments of the invention relate to the field of wireless communications, and disclose a data sending and receiving method and device, for saving system transmission symbol resources and ensuring correct data transmission. When a sending end sends signals through transmission symbols in a subframe, same data is transmited over an n-th transmission symbol and a k-th transmission symbol of the subframe, and a receiving end obtains the complete data through combining part of the data, transmitted by the two transmission symbols. By using the method and device provided by the invention, the system transmission symbol resources can be saved, and the correct data transmission can be ensured.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a data sending and receiving method and device. Background technique [0002] In traditional cellular communication technology, the data communication process between two terminals is as follows: figure 1 shown. The voice and data services of the two terminals interact through the base station (eNB) where they reside and the core network. [0003] Device-to-Device (D2D) technology refers to the way that adjacent terminals can transmit data through direct links within a short distance without forwarding through central nodes (ie, base stations), such as figure 2 shown. The short-distance communication characteristics and direct communication mode of D2D technology make it have the following advantages: [0004] First, the terminal short-distance direct communication method can achieve higher data rate, lower delay and lower power consumption; [0005] Second, using the ...

Claims

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Application Information

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IPC IPC(8): H04L27/26H04L5/00
Inventor 高秋彬陈文洪赵锐彭莹
Owner DATANG MOBILE COMM EQUIP CO LTD
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