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Data transmission method and device

A technology of a data transmission method and transmission scheme, applied in the field of data transmission methods and equipment, can solve problems such as terminal inability to communicate, signal attenuation, etc.

Active Publication Date: 2016-11-23
DATANG MOBILE COMM EQUIP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The disadvantage of the existing technology is: in the existing network, terminals working in some scenarios, such as terminals working in basements, shopping malls or building corners, are severely blocked by wireless signals, and the signals are greatly attenuated. The above-mentioned terminals cannot communicate with the network

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  • Data transmission method and device

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Embodiment Construction

[0101] Specific embodiments of the present invention will be described below in conjunction with the accompanying drawings.

[0102] The inventor noticed during the invention that in the existing network, the terminals working in some scenarios are severely blocked by the wireless signal, and the signal is greatly attenuated, so that the terminal cannot communicate with the network. The deep coverage of the network by terminal use will greatly increase the cost of network construction, and the benefits are not necessarily significant.

[0103] To solve this problem, some degree of enhancement to the existing coverage is required. To achieve coverage enhancement, a more feasible solution is to use repeated transmission or similar technology for existing channels, and a certain degree of coverage gain can be obtained by performing repeated transmissions on existing physical channels for dozens to hundreds of times.

[0104] When repeated transmission is used, in order to reduce...

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Abstract

The invention discloses a data transmission method and device. The method comprises the steps of at least determining a resource element which is reserved from the multiple subframes and is used for transmitting a channel state information reference signal when the same data is repeatedly transmitted on multiple subframes, and transmitting the data on the resource elements except the resource element reserved for the channel state information reference signal; and at least determining the resource element which is reserved from the multiple subframes and is used for transmitting the channel state information reference signal when receiving is carried and the same data is repeatedly transmitted on multiple subframes, and receiving the data on the resource elements except the resource element reserved for the channel state information reference signal. Through adoption of the method and the device, the sizes of data mapping resources in each subframe are ensured to be the same, and the coherent combination can be supported when multi-subframe channel estimation is carried out.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a data transmission method and equipment. Background technique [0002] With the rise of the Internet of Things, more and more attention is paid to supporting MTC (Machine Type Communication, machine type communication) in an LTE (Long Term Evolution, long term evolution) system. In 3GPP Release 13, a physical layer enhancement project for MTC was established. An MTC device (MTC terminal) may have some of the characteristics of various M2M (Machine to Machine, machine to machine) communication features, such as low mobility, small amount of transmitted data, insensitive to communication delay, and extremely low requirements characteristics such as power consumption. [0003] The disadvantage of the existing technology is that in the existing network, terminals working in some scenarios, such as terminals working in basements, shopping malls or building corners, a...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04L1/08H04L5/00H04W4/00H04W72/04
CPCH04L1/00
Inventor 高雪娟邢艳萍
Owner DATANG MOBILE COMM EQUIP CO LTD
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