Method and device for detecting and repairing channel anomaly of active antenna

Patent metadata

Field	Value
Publication number	US-9281998-B2
Application number	US-201214379453-A
Country	US
Kind code	B2
Filing date	Jun 18, 2012
Priority date	Mar 6, 2012
Publication date	Mar 8, 2016
Grant date	Mar 8, 2016

Abstract

The present disclosure provides a method and device for detecting and repairing a channel anomaly of an active antenna, and the method includes: an operation state of a transmission channel or a reception channel is determined by analyzing in real time data of a feedback coupling channel or data of the reception channel, if the operation state is anomalous, an anomaly protection is performed and an alarm is reported; a level of the alarm and a reason causing the alarm are determined, if data of the transmission/reception channel are anomalous and the anomaly protection is performed, a current antenna beam forming parameter is stored and the antenna beam forming parameter is set to zero; after the alarm has been eliminated, a stored valid antenna beam forming parameter is set to a valid value; and if a transmission/reception analog channel operates anomalously and the anomaly protection is performed, the antenna beam forming parameter is re-acquired and an acquired valid antenna beam forming parameter is configured. The present disclosure can detect states of multiple transmission/reception channels of an active antenna without an extra calibration channel, thus reducing the design cost of a system.

First claim

The invention claimed is:

1. A method for detecting and repairing a channel anomaly of an active antenna, comprising:
determining an operation state of a transmission channel or a reception channel by analyzing in real time data of a feedback coupling channel or data of the reception channel, if the operation state is anomalous, performing an anomaly protection and reporting an alarm;
determining a level of the alarm and a reason causing the alarm, if data of the transmission/reception channel are anomalous and the anomaly protection is performed, storing a current antenna beam forming parameter and setting the antenna beam forming parameter to zero; after the alarm has been eliminated, setting a stored valid antenna beam forming parameter to a valid value; and
if a transmission/reception analog channel operates anomalously and the anomaly protection is performed, re-acquiring the antenna beam forming parameter and configuring an acquired valid antenna beam forming parameter.

2. The method according to claim 1 , further comprising:
detecting in real time whether a configured antenna beam forming parameter changes, if it changes, evaluating a changing procedure of the antenna beam forming parameter, if the changing procedure is abnormal, determining that the antenna beam forming parameter is invalid and discarding the antenna beam forming parameter.

3. The method according to claim 2 , wherein the step of determining an operation state anomaly of the reception channel comprises:
collecting in real time uplink digital data of respective reception channels, calculating in real time powers of acquired uplink digital data of respective reception channels, and configuring in real time gains of analog channels according to the powers of the uplink digital data;
detecting and recording in real time configured analog gain values, and calculating uplink Over-The-Air (OTA) analog powers of respective reception channels and uplink OTA analog power differences between respective reception channels according to the analog gain values;
determining in real time whether recorded gain values are normal, determining in real time whether the powers of the uplink digital data change correctly with the gain values of the analog channels, and determining in real time whether the uplink reception OTA analog power differences between respective reception channels are normal; and
if the the gain values, powers or power differences are anomalous, representing that operation states of the reception channels are anomalous.

4. The method according to claim 2 , wherein the step for determining an operation state anomaly of the transmission channel comprises:
detecting in sequence whether a clock, an optical port, a power of downlink base band data, a gain of downlink base band data, a power of downlink combining data, a gain of downlink combining data, a power of downlink analog data, a power of reverse channel data, a gain of reverse channel data, a phase of reverse channel data, a time delay of reverse channel data, a channel coupling power and a standing wave ratio are anomalous, if any one of detection results is anomalous, representing the operation state of the transmission channel is anomalous.

5. The method according to claim 1 , wherein the step of determining an operation state anomaly of the reception channel comprises:
collecting in real time uplink digital data of respective reception channels, calculating in real time powers of acquired uplink digital data of respective reception channels, and configuring in real time gains of analog channels according to the powers of the uplink digital data;
detecting and recording in real time configured analog gain values, and calculating uplink Over-The-Air (OTA) analog powers of respective reception channels and uplink OTA analog power differences between respective reception channels according to the analog gain values;
determining in real time whether recorded gain values are normal, determining in real time whether the powers of the uplink digital data change correctly with the gain values of the analog channels, and determining in real time whether the uplink reception OTA analog power differences between respective reception channels are normal; and
if the the gain values, powers or power differences are anomalous, representing that operation states of the reception channels are anomalous.

6. The method according to claim 1 , wherein the step for determining an operation state anomaly of the transmission channel comprises:
detecting in sequence whether a clock, an optical port, a power of downlink base band data, a gain of downlink base band data, a power of downlink combining data, a gain of downlink combining data, a power of downlink analog data, a power of reverse channel data, a gain of reverse channel data, a phase of reverse channel data, a time delay of reverse channel data, a channel coupling power and a standing wave ratio are anomalous, if any one of detection results is anomalous, representing the operation state of the transmission channel is anomalous.

7. A device for detecting and repairing a channel anomaly of an active antenna, comprising: a beam forming parameter detection module, a beam forming parameter configuration module, a beam forming parameter acquisition module and a beam forming parameter storage module, wherein
the beam forming parameter detection module is configured to determine an operation state of a transmission channel or a reception channel by analyzing in real time data of a feedback coupling channel or data of the reception channel, and perform an anomaly protection and report an alarm when it is determined that the operation state is anomalous;
the beam forming parameter detection module is further configured to: determine a level of the alarm and a reason causing the alarm, and when it is determined that data of the transmission/reception channel are anomalous and the anomaly protection is performed, notify the beam forming parameter storage module to perform a storage operation; set an antenna beam forming parameter configured by the beam forming parameter configuration module to zero; after the alarm has been eliminated, set a valid antenna beam forming parameter stored by the beam forming parameter storage module to a valid value; and when it is determined that a transmission/reception analog channel operates anomalously and the anomaly protection is performed, notify the beam forming parameter acquisition module;
the beam forming parameter configuration module is configured to configure a valid antenna beam forming parameter sent by the beam forming parameter acquisition module;
the beam forming parameter acquisition module is configured to, after receiving a notice from the beam forming parameter detection module, re-acquire the antenna beam forming parameter, and sent an acquired antenna beam forming parameter to the beam forming parameter configuration module; and
the beam forming parameter storage module is configured to, after receiving a notice from the beam forming parameter detection module, store a current antenna beam forming parameter value.

8. The device according to claim 7 , wherein the beam forming parameter configuration module is further configured to: detect in real time whether an antenna beam forming parameter configured by itself changes, and when it is determined that the antenna beam forming parameter configured by itself changes, evaluate a changing procedure of the antenna beam forming parameter, if the changing procedure is abnormal, determine that the antenna beam forming parameter is invalid and discard the antenna beam forming parameter.

9. The device according to claim 8 , when detecting an operation state of the reception cha

Assignees

• Wang Fang
• Zte Corp

Inventors

• Wang Fang

Classifications

• H04B17/23

  Indication means, e.g. displays, alarms, audible means · CPC title

• H04W24/02

  Arrangements for optimising operational condition · CPC title

• H04B17/102

  Power radiated at antenna · CPC title

• H04B7/0617

  for beam forming · CPC title

• H04B17/14

  of the whole transmission and reception path, e.g. self-test loop-back · CPC title