A link control method and device

A link control and modulation technology, applied in power management, electrical components, wireless communication, etc., can solve the problems of nonlinear distortion, ATPC cannot exert transmit power, wireless link cannot work normally, etc., and achieve high transmit power. Effect

Active Publication Date: 2017-03-29
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] When AM and ATPC are turned on at the same time, often due to the limitation of AM, ATPC cannot exert greater transmission power in low-order modulation, or because of ATPC, AM produces nonlinearity when adjusted to high-order modulation. Distortion, causing the wireless link to not work properly

Method used

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  • A link control method and device
  • A link control method and device

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Experimental program
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Effect test

Embodiment 1

[0032] Such as figure 1 As shown, a link control method includes the following steps:

[0033] Step 1, obtaining the first link quality;

[0034] Step 2, determining a new modulation method to be used according to the first link quality;

[0035] Step 3, obtain the current transmission power;

[0036] Step 4, if the current transmission power can make the microwave transmission equipment work normally under the new modulation mode, then determine the new modulation mode as the current modulation mode; otherwise, keep the original modulation mode as the current modulation mode.

[0037] Wherein, step 2 includes: if the quality of the first link is higher than the entry threshold value of the high-order modulation mode, then select the high-order modulation mode as a new modulation mode; if the quality of the first link is lower than the original modulation mode mode corresponding to the exit threshold, select the low-order modulation mode as the new modulation mode.

[0038...

Embodiment 2

[0078] Correspondingly, the present invention provides a link control device, such as Figure 5 shown, including:

[0079] a first acquiring unit, configured to acquire a first link quality;

[0080] a modulation mode selection unit, configured to determine a new modulation mode to be used according to the first link quality;

[0081] a second acquiring unit, configured to acquire the current transmit power;

[0082] A modulation mode determining unit, configured to determine that if the current transmission power can make the microwave transmission equipment work normally under the new modulation mode, then determine that the new modulation mode is the current modulation mode; otherwise, keep the original modulation mode as Current modulation method.

[0083] Wherein, the modulation mode selection unit is specifically configured to: if the quality of the first link is higher than the entry threshold value of the high-order modulation mode, select the high-order modulation ...

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Abstract

The invention provides a link control method and device and belongs to the wireless field. The method comprises the following steps that: first link quality is obtained; a new modulation mode to be used is determined according to the first link quality; current transmitting power is obtained; and if the current transmitting power can make microwave transmission equipment work normally under the new modulation mode, the new modulation mode is determined as a current modulation mode, otherwise, an original modulation mode is kept as the current modulation. With the link control method and device of the invention adopted, nonlinear distortion occurring under a high-order modulation mode, which is caused by discordance of the effects of automatic modulation (AM) and automatic transmit power control (ATPC), can be avoided, and at the same time, it can be ensured that a low-order modulation mode can exert larger transmission power.

Description

technical field [0001] The invention relates to the field of wireless communication, in particular to a link control method and device. Background technique [0002] With the development of communication technology, services are evolving from purely small-bandwidth voice services to large-bandwidth digital multimedia services, and the demand for microwave transmission equipment that supports adaptive modulation (Automatic Modulation, AM) is also increasing. [0003] This kind of microwave transmission equipment needs to support high-order modulation (such as 256QAM, quadrature amplitude modulation) to obtain larger bandwidth when the weather is good (such as when the weather is sunny); Sometimes (such as when it is cloudy and rainy), when the high-order modulation method cannot be maintained, it is necessary to use a low-order modulation method (such as QPSK, quadrature phase shift keying modulation method) to maintain the normal transmission of important services; [0004]...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/04H04L27/26
Inventor 贾云翔
Owner ZTE CORP
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