A receiving channel gain automatic control method and device

A technology of gain automatic control and receiving channel, which is applied in the field of communication, can solve the problems that the receiving end cannot know the received signal power, can not predict the received signal power, etc., and achieve the effect of improving the transmission delay and compressing the gain adjustment delay of the receiving channel

Active Publication Date: 2017-09-19
DATANG MOBILE COMM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In the TDMA technology-based Internet of Vehicles communication and the D2D communication of the LTE cellular network, due to the rapid change of the received signal power, the receiving end cannot know the possible received signal power (that is, the received signal power cannot be predicted); when the received signal power occurs When changing rapidly, the gain of the receiving channel needs to be adjusted quickly to adapt to the change of the received signal power, but there is currently no related technology

Method used

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  • A receiving channel gain automatic control method and device
  • A receiving channel gain automatic control method and device
  • A receiving channel gain automatic control method and device

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Experimental program
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Embodiment 1

[0033]In an Adhoc ad hoc network, Embodiment 1 of the present invention provides an automatic control method for receiving channel gain, which can be applied to application scenarios where the receiving end cannot know the possible receiving signal power due to rapid changes in received signal power, such as the current Vehicle networking communication scenarios based on TDMA technology and D2D communication scenarios of LTE cellular networks, etc.; such as figure 1 As shown, the method includes the following steps:

[0034] Step 101, the sending end generates data to be sent to the receiving end, each time slot of the data includes an AGCT period and a PDATA (data) period, the AGCT period includes a training signal for AGC, and the AGCT period carries The training signal for performing AGC is generated by using a short sequence cyclic shift to extend the length of the sequence, and the PDATA period includes data content. In addition, each time slot of the data may further in...

Embodiment 2

[0070] Based on the same inventive concept as the above method, an embodiment of the present invention also provides a receiving end, such as Figure 4 As shown, the receiver includes:

[0071] The receiving module 11 is configured to receive data from the sending end, each time slot of the data includes an automatic gain control training AGCT period and a data PDATA period; the AGCT period includes a training signal for automatic gain control AGC, The PDATA period includes data content;

[0072] The control module 12 is configured to use the training signal for AGC carried in the AGCT period to automatically control the gain of the receiving channel in this time slot.

[0073] The control module 12 is specifically configured to use all received signals in the Training sig period to calculate the average power of signals in the Training sig period when the AGCT period includes a training signal Training sig period and an Adjust period, and pass The difference between the ave...

Embodiment 3

[0088] Based on the same inventive concept as the above method, an embodiment of the present invention also provides a sending end, such as Figure 5 As shown, the sender includes:

[0089] The generation module 21 is used to generate data that needs to be sent to the receiving end, each time slot of the data includes an automatic gain control training AGCT period and a data PDATA period, and the AGCT period includes a training signal for automatic gain control AGC, The data content is included in the PDATA period;

[0090] The sending module 22 is configured to send the data to the receiving end, and the receiving end uses the training signal for AGC carried in the AGCT period to automatically control the receiving channel gain of this time slot.

[0091] In the embodiment of the present invention, the AGCT period includes a plurality of training signal Training sig periods and adjustment Adjust periods respectively corresponding to the plurality of Training sig periods; whe...

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Abstract

The invention discloses a receiving channel gain automatic control method and equipment, the method includes: the receiving end receives data from the sending end, and each time slot of the data includes an automatic gain control training AGCT period and a data PDATA period; wherein, The AGCT period includes a training signal for automatic gain control AGC, and the PDATA period includes data content; the receiving end uses the training signal for AGC carried in the AGCT period to perform the training signal for this time slot Receive channel gain automatic control. In the embodiment of the present invention, by carrying the training signal for AGC in the AGCT period of the data, the receiving end can use the training signal for AGC carried in the AGCT period to perform automatic control of the receiving channel gain of this time slot, Therefore, when the received signal power changes rapidly, it is ensured that the gain of the receiving channel can be quickly adjusted to adapt to the change of the received signal power.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a receiving channel gain automatic control method and equipment. Background technique [0002] The technical characteristics of the Internet of Vehicles based on TDMA (Time Division Multiple Access) technology include: (1) Vehicles are synchronized by GNSS (Global Navigation Satellite System, Global Navigation Satellite System) and divided based on GNSS timing Time slot, each vehicle occupies a time-frequency resource of a time slot alone, and different users use different time slots; (2) 2 antennas are used for reception; (3) When the vehicle sends information, the range that needs to be covered is up to 300 meters, The closest distance to the adjacent car is 2 meters, and the dynamic range of the received signal is relatively large; (4) Due to the strong mobility of the car and the rapid change of the network topology, it is impossible to predict the distance inf...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04W52/14H04W52/00H04W76/00H04J14/08
CPCH03G3/3052
Inventor 李林赵锐邓猛房家奕
Owner DATANG MOBILE COMM EQUIP CO LTD
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