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Data stream transmitting method and device

A technology of data flow and data, applied in the field of communication, can solve problems such as no power superposition NOMA implementation method proposed

Active Publication Date: 2014-11-19
BEIJING UNIV OF POSTS & TELECOMM +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] However, the current prior art has not proposed a specific implementation of power superposition NOMA

Method used

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  • Data stream transmitting method and device
  • Data stream transmitting method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1 provides a method for transmitting data streams, so as to provide a specific implementation manner of power superposition NOMA. The specific implementation process of this method is as follows: figure 1 As shown, it mainly includes the following steps:

[0026] Step 11, the transmitting end modulates the data to be transmitted to the first device and the data to be transmitted to at least one other device (hereinafter referred to as the at least one other device) onto the same data stream.

[0027] For example, step 11 may be performed when the total transmission power of the transmitting end is greater than the transmission power required for transmitting the data stream to the first device.

[0028] Step 12: Transmit the data stream obtained by executing step 11 by using the transmit power determined for the first device and the at least one other device respectively.

[0029] Using the above method, by modulating the data to be transmitted to the first...

Embodiment 2

[0052] According to actual channel fading conditions and rate requirements, power superposition NOMA can multiplex two or more users in the power domain. Embodiment 2 takes the multiplexing power domains of two downlink user terminals as an example, and specifically illustrates how to perform power superposition NOMA in practice.

[0053] Those skilled in the art can understand that the actual application is not limited to two user terminal multiplexed power domains, that is, multiple user terminal multiplexed power domains with a number greater than 2 can also be used; in addition, through the simple extension of this patent, the power The superimposed NOMA method can also be used as an uplink multiple access method.

[0054] In practical applications, typical application scenarios of power overlay NOMA include ultra-dense network scenarios, device-to-device (D2D, Device to Device) and machine-to-machine (M2M, Machine to Machine) scenarios, etc. The characteristics of these ...

Embodiment 3

[0119] Embodiment 3 provides a device for transmitting data streams, the specific structural diagram of the device is as follows Figure 8 As shown, a modulating unit 81 and a transmitting unit 82 are included. The specific introduction of each functional unit is as follows:

[0120] A modulation unit 81, configured to modulate the data to be transmitted to the first device and the data to be transmitted to at least one other device (hereinafter referred to as the other at least one device) onto the same data stream (hereinafter referred to as the same data stream) ;

[0121] The transmitting unit 82 is configured to transmit the same data stream by using transmit power determined for the first device and the at least one other device respectively.

[0122]Optionally, the above apparatus may further include an allocation factor determination unit and a transmission power determination unit, configured to determine the transmission power for the first device and the transmiss...

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Abstract

The application discloses a data stream transmitting method, and aims to provide a specific implementation way for power superposition non-orthogonal multiple access. The method comprises the following steps: when the total transmitting power of a transmitting end is greater than transmitting power needed for transmitting data streams to first equipment, modulating data to be transmitted to the first equipment and data to be transmitted to at least one piece of other equipment onto the same data stream; and transmitting the same data stream by adopting transmitting power determined specific to the first equipment and the at least one piece of other equipment. The application further discloses a data stream transmitting device.

Description

technical field [0001] The present application relates to the field of communication technologies, and in particular to a method and device for transmitting data streams. Background technique [0002] Wireless access technology is an important technology to improve the capacity of mobile communication system. The mobile communication system developed from 1G to 4G, successively adopting frequency division multiple access (FDMA), time division multiple access (Time Division Multiple Access, TDMA), code division multiple access (Code Division Multiple Access, CDMA) and regular An Orthogonal Frequency Division Multiple Access (OFDMA) access technology enables multiple user terminals to access and share system resources. In these access methods, user terminals exhibit orthogonality in a certain dimension of system resources (frequency domain, time domain or code domain), and therefore belong to the category of Orthogonal Multiple Access (OMA). [0003] In a mobile communicatio...

Claims

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Application Information

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IPC IPC(8): H04L1/00H04W52/04
Inventor 赵慧张诚诚郑侃罗振东魏克军
Owner BEIJING UNIV OF POSTS & TELECOMM
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