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Wireless transmission method, device and system

A wireless transmission and transmission delay technology, applied in the field of communication, can solve problems such as failure to meet the radio frequency specification requirements of base stations, and achieve the effect of ensuring demodulation performance

Inactive Publication Date: 2014-01-15
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] Aiming at the problem that the base station cannot meet the radio frequency specification requirements of the base station because the base station transmits signals of different carriers at the same time, the present invention provides a wireless transmission method, device and system to at least solve the above problems

Method used

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  • Wireless transmission method, device and system
  • Wireless transmission method, device and system

Examples

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Embodiment 1

[0059] This embodiment provides a wireless transmission method for carrier aggregation.

[0060] figure 2 is a flowchart of a wireless transmission method according to an embodiment of the present invention, such as figure 2 As shown, the method mainly includes the following steps:

[0061] Step S202, the base station acquires downlink transmission delays of all component carriers under the current carrier aggregation;

[0062] Step S204, the base station determines the timing of sending each of the component carriers according to the downlink transmission delay of each of the component carriers, wherein the timing can ensure that the maximum time difference between the component carriers received by the terminal is less than predetermined threshold;

[0063] Step S206, the base station sends signals on each of the component carriers according to the timing.

[0064] Through the above method provided by this embodiment, the base station determines the timing of sending e...

Embodiment 2

[0083] This embodiment provides a wireless transmission method for a wireless transmission system including a relay base station.

[0084] Figure 5 It is a flowchart of a wireless transmission method according to an embodiment of the present invention, such as Figure 5 As shown, the method includes the following steps:

[0085] Step S502, the control base station obtains the downlink transmission delay of the first carrier of the control base station, and the downlink transmission delay of the second carrier of the relay base station;

[0086] In this embodiment, both the first carrier and the second carrier may include one or more carriers.

[0087] Step S504, the controlling base station determines the first timing for the controlling base station to transmit the first carrier and the time sequence for the relay base station to transmit the first carrier according to the downlink transmission delay of the first carrier and the downlink transmission delay of the second ca...

Embodiment 3

[0111] Figure 9 It is a schematic diagram of the composition of the wireless transmission system under carrier aggregation in this embodiment, as shown in Figure 9 As shown, the system includes a base station 901 and a terminal 902, wherein the base station 901 includes: a terminal transmission advance estimation module 903 (equivalent to image 3 The acquisition module 310 in, or Figure 4 In the estimation module 312) and the base station transmission time control module 904 (equivalent to image 3 The determination module 320 and the sending module 330 in ). In this system, the terminal transmission advance estimation module 903 estimates the TA of each component carrier, and then the base station transmission time control module 904 calculates the timing information sent by the base station for each component carrier, and transmits each component according to this timing information The signal on the carrier to ensure that the maximum time difference between the compo...

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Abstract

The invention discloses a wireless transmission method, device and system. The wireless transmission method comprises the steps that a base station obtains the downlink transmission delay of each component carrier wave of current carrier wave aggregation; the base station determines the time sequence for transmitting each component carrier wave according to the downlink transmission delay of each component carrier wave, wherein the time sequence ensures that the maximum time difference among the component carrier waves received by a terminal is smaller than a preset threshold value; the base station transmits the signal on each component carrier wave according to the time sequence. According to the wireless transmission method, device and system, the maximum time difference among the component carrier waves received by the terminal can meet the TAE requirement, and the demodulation performance of the terminal is guaranteed.

Description

technical field [0001] The present invention relates to the communication field, in particular, to a wireless transmission method, device and system. Background technique [0002] According to the current 3GPP Rel-11, in some scenarios, the terminal needs to use different timing advances to send signals of different branches (such as carrier, remote radio head and relay, etc.) to ensure that the information of each branch reaches the base station at the same time and Received and demodulated. These branches may be different component carriers in a carrier aggregation scenario, or different propagation paths caused by relay base stations. When different carriers or relay base stations use different TAGs (Timing Advance Group, transmission advance group) for different paths in carrier aggregation, there is a relatively obvious propagation time difference between multiple carriers or multiple paths. In the prior art, the base station transmits different carriers at the same t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W56/00H04L27/26
Inventor 曹一卿马志锋刁心玺
Owner ZTE CORP
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