Method and device for quantizing data representative of a radio signal received by a radio antenna of a mobile network

Patent metadata

Field	Value
Publication number	US-12432010-B2
Application number	US-202117928089-A
Country	US
Kind code	B2
Filing date	May 20, 2021
Priority date	May 26, 2020
Publication date	Sep 30, 2025
Grant date	Sep 30, 2025

Abstract

A method and a device for matching a quantization table of data representative of a radio signal received by a radio antenna of a mobile network. The method includes: obtaining an item of information representative of a channel decoding error rate of a decoded quantized demodulated signal from a demodulation of the radio signal received by the antenna, the demodulated radio signal having been quantized by the quantization table, and the quantized demodulated radio signal having undergone a channel decoding; matching the quantization table when the channel decoding error rate is higher than a determined threshold; and transmitting an item of information representative of the matching of the quantization table to a channel decoding device or to a demodulation device.

First claim

The invention claimed is:

1. A method implemented by a device for matching a quantizing table of data representative of a radio signal received by a radio antenna of a mobile network, comprising:
obtaining an item of information representative of a channel decoding error rate of a decoded quantized demodulated signal from a demodulation of the radio signal received by said antenna, said demodulated radio signal having been quantized by said quantization table, and said quantized demodulated radio signal having undergone a channel decoding,
matching the quantization table in response to the channel decoding error rate being greater than a determined threshold, wherein the matching of the quantization table comprises calculating a new quantization table from the demodulated received radio signal, and
transmitting an item of information representative of the matching of the quantization table to a channel decoding device or to a demodulation device.

2. The method according to claim 1 , further comprising matching the quantization table in response to the channel decoding error rate being less than another determined threshold.

3. The method according to claim 1 , wherein each value of the demodulated signal is representative of a log-likelihood ratio of a symbol of said radio signal received by said antenna.

4. A device comprising:
at least one processor and at least one memory containing instructions which when executed by the at least one processor configure the device to match a quantization table of data representative of a radio signal received by a radio antenna of a mobile network, by:
obtaining an item of information representative of a channel decoding error rate of a decoded quantized demodulated signal from a demodulation of the radio signal received by said antenna, said demodulated radio signal having been quantized by said quantization table, and said quantized demodulated radio signal having undergone a channel decoding, and
matching the quantization table in response to the channel decoding error rate being greater than a determined threshold, wherein the matching of the quantization table comprises calculating a new quantization table from the demodulated received radio signal, and
transmitting an item of information representative of the matching of the quantization table to a channel decoding device or to a demodulation device.

5. The device according to claim 4 , wherein the instructions further configure the device to:
demodulate said radio signal received by said antenna, providing a demodulated signal,
quantize each value of said demodulated signal using the quantization table, providing the quantized demodulated radio signal,
transmit said quantized demodulated radio signal to a channel decoding module.

6. The device according to claim 4 , wherein the instructions further configure the device to:
receive said quantized demodulated radio signal from a demodulation device configured to demodulate the radio signal received by the radio antenna of the mobile network,
de-quantize each value of said quantized demodulated signal inversely using a de-quantization table, providing a de-quantized demodulated signal,
decode said de-quantized demodulated signal, and
calculate the channel decoding error rate of the decoded de-quantized demodulated signal.

7. The device according to claim 4 wherein the device is implemented in a server.

8. A mobile network device comprising:
a demodulation device configured to demodulate a radio signal received by a radio antenna of a mobile network, providing a demodulated signal, and to quantize each value of said demodulated signal using a quantization table, providing a quantized demodulated signal,
a channel decoding device in the form of a programmable circuit configured to a de-quantize the quantized demodulated signal to produce a de-quantized demodulated signal and implement a channel decoding scheme to decode the de-quantized demodulated signal to produce a decoded de-quantized demodulated signal,
at least one communication bus able to transmit the quantized demodulated signal from the demodulation device to the channel decoding device, and
a matching device comprised in the demodulation device or in the channel decoding device, the matching device comprising a processor and a memory configured to:
obtain an item of information representative of a channel decoding error rate of the decoded de-quantized demodulated signal,
match the quantization table in response to the channel decoding error rate being greater than a determined threshold, and
transmit an item of information representative of the matching of the quantization table to the channel decoding device or to the demodulation device.

9. A mobile network system comprising:
at least one radio antenna, configured to receive a radio signal,
at least one unit implementing low functions of the mobile network, comprising at least one demodulation device, which is configured to demodulate said radio signal received by said antenna, providing a demodulated signal, to quantize each value of said demodulated signal using a quantization table, providing a quantized demodulated signal, and to transmit said quantized demodulated signal to at least one channel decoding device,
at least one unit for implementing high functions of the mobile network, comprising at the least one channel decoding device, which is configured to receive said quantized demodulated signal from the demodulation device, to de-quantize each value of said quantized demodulated signal inversely using a de-quantization table, providing a de-quantized demodulated signal, to decode said de-quantized demodulated signal, and to calculate a channel decoding error rate of the decoded de-quantized demodulated signal, and
a matching device comprised in the demodulation device or in the channel decoding device, the matching device comprising a processor and a memory configured to:
obtain an item of information representative of the channel decoding error rate of the decoded de-quantized demodulated signal,
match the quantization table in response to the channel decoding error rate being greater than a determined threshold, and
transmit an item of information representative of the matching of the quantization table to the channel decoding device or to the demodulation device.

10. A method implemented by a device for matching a quantizing table of data representative of a radio signal received by a radio antenna of a mobile network, comprising:
obtaining an item of information representative of a channel decoding error rate of a decoded quantized demodulated signal from a demodulation of the radio signal received by said antenna, said demodulated radio signal having been quantized by said quantization table, and said quantized demodulated radio signal having undergone a channel decoding,
matching the quantization table in response to the channel decoding error rate being greater than a determined threshold, wherein the matching of the quantization table comprises selecting a new pre-calculated quantization table, the new pre-calculated quantization table belonging to a group of pre-calculated quantization tables in which each quantization table is associated with a maximum channel decoding error rate threshold and a minimum channel decoding error rate threshold, the new quantization table being selected according to a value of the channel decoding error rate of the received radio signal in relation to minimum and maximum channel decoding error rate thresholds associated with the quantization tables of the group, and
transmitting an item of information representative of the matching of the quantization table to a channel decoding devi

Assignees

• Orange

Inventors

• Ferrieux Alexandre
• Guillemin Fabrice
• Quintuna Rodriguez Veronica Karina

Classifications

• H04L1/203

  Details of error rate determination, e.g. BER, FER or WER · CPC title

• H04L1/0006 Primary

  by adapting the transmission format · CPC title

• H03M7/50

  Conversion to or from non-linear codes, e.g. companding · CPC title

• H04L1/0045 Primary

  Arrangements at the receiver end · CPC title

• H04L1/0002

  by adapting the transmission rate · CPC title