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Data transmission and reception method and apparatus

A data receiving method and data technology, which are applied in the direction of digital transmission system, payload distribution, pilot signal distribution, etc., can solve the problem that data and demodulation pilot and DRS cannot be multiplexed and transmitted.

Inactive Publication Date: 2017-04-05
CHINA ACAD OF TELECOMM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The disadvantage of the existing technology is that if the existing data transmission method is used, the downlink data, demodulation pilot and DRS cannot be multiplexed and transmitted within the DMTC window

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  • Data transmission and reception method and apparatus
  • Data transmission and reception method and apparatus
  • Data transmission and reception method and apparatus

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Embodiment Construction

[0053] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0054] The inventor noticed during the invention that:

[0055]When the LTE system works on a carrier in an unlicensed frequency band, in order to ensure fair sharing of spectrum resources with other devices or systems, the base station needs to perform LBT (listen before talk, listen before talk) before sending DRS. Therefore, before the DMTC window The last one or more symbols of each subframe are idle, and the base station does not send any signal.

[0056] Because in the last one or more OFDM (Orthogonal Frequency Division Multiplex, Orthogonal Frequency Division Multiplex) symbols of each subframe in the DMTC window, the base station does not send signals on the unlicensed frequency band resources, so using the existing data transmission method in The downlink data, demodulation pilot and DRS cannot be multiplexed and transmitted within the DMTC w...

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Abstract

The invention discloses a data transmission and reception method and apparatus. The method includes determining the discovery measuring time configuration window based on the configuration information; performing data transmission, reception and detection according to the short subframe format in the discovery measuring time configuration window, wherein the short subframe format shows that the transmission is carried out in the subframe without occupying the last N orthogonal frequency division multiplexing symbols in the subframe, N is an integer great than or equal to 1. The data transmission and reception method and apparatus support the multiplexing transmission of the downlink data and the discovery reference signal in the discovery measuring time configuration window.

Description

technical field [0001] The present invention relates to the technical field of wireless communication, in particular to a data sending and receiving method and device. Background technique [0002] The LTE (Long Term Evolution, long-term evolution) system will support the deployment of transmission on unlicensed spectrum resources to improve user experience and expand coverage. In order to support users to discover and measure unlicensed spectrum resources, it is necessary to transmit a DRS (discovery reference signal, discovery reference signal) on a carrier in an unlicensed frequency band. [0003] The LTE system has determined that a DMTC (discovery measurement timing configuration, discovery measurement time configuration) window is configured for the user on the unlicensed spectrum, and the base station sends a DRS within the DMTC window, and the user can detect the DRS signal within this time window. [0004] The disadvantage of the existing technology is that if the ...

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Application Information

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IPC IPC(8): H04L5/00
CPCH04L5/00H04L5/0044H04L5/0048H04L5/0053
Inventor 司倩倩潘学明徐伟杰王加庆
Owner CHINA ACAD OF TELECOMM TECH