CN102088716A - Method and system for realizing signal quality detection - Google Patents
Method and system for realizing signal quality detection Download PDFInfo
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- CN102088716A CN102088716A CN2009102414725A CN200910241472A CN102088716A CN 102088716 A CN102088716 A CN 102088716A CN 2009102414725 A CN2009102414725 A CN 2009102414725A CN 200910241472 A CN200910241472 A CN 200910241472A CN 102088716 A CN102088716 A CN 102088716A
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Abstract
The invention discloses a method and a system for realizing signal quality detection, which are used for detecting the quality of a radio frequency signal of a base station, wherein the power supply of a test antenna is in an on state, and the power supply of a non-test antenna is in an off state. The method comprises the following steps that: a physical layer receives a link-creating message of a test service and creates a link for a test service; the test antenna encodes a downlink data signal to be transmitted by the physical layer and transmits the encoded downlink data signal to a calibration network through a transmitting channel; the test antenna couples the signals of the calibration network and transmits the coupled signal to a receiving channel; the receiving channel transmits the coupled signal to the physical layer; and the physical layer decodes the coupled signal and determines an error rate of the downlink data signal according to the decoded information.
Description
Technical field
The present invention relates to communication technical field, be meant a kind of method and system that realize that signal quality detects especially.
Background technology
TD-SCDMA is the mode of operation of TDD, and transceiver common sparing passage is realized the transmitting-receiving of signal by switching device.When emission, open the switch of emission path, the receive path switch cuts out; When receiving, open the switch of receive path, the switch of transmission channel cuts out.
Put on market on a large scale the TD-SCDMA base station at present, and in later time, the aging conditions of indivedual electronic devices and components may increase.It is that to call call drop serious that the radio frequency that occurs the base station in the test of network optimization in the recent period draws the performance of first unit (RRU) in the outfield, the frequent step-out of terminal, and phenomenons such as search cell failure, but the base station does not have any alarm report.The radio-frequency (RF) index of finding upstream or downstream in laboratory location worsens (EVM), orientates at last that electronic device is aging to be caused as, and it is normal to change the back index.Since when occurring, this type of problem reports with nowhere to turn to alert, more hidden, bring serious negative effect to user experience simultaneously, quick and precisely detect radio-frequency (RF) index so need one.
Summary of the invention
The invention provides a kind of method and system that realize that signal quality detects, in order to the radiofrequency signal quality of base stations detected.
A kind of method that realizes that signal quality detects that the invention process provides, the power supply of test antenna is in on-state, and the power supply of non-test antenna is in off-state, and this method may further comprise the steps:
Physical layer receive at test service set up chain circuit message after, for this test service is set up link;
After encoding, the downlink data signal that physical layer will send is transmitted to calibration network through transmission channel, described test antenna; The be coupled signal of described calibration network of test antenna, and the signal that coupling obtains sent to receive path;
Receive path is transferred to physical layer with the signal that described coupling obtains; Physical layer is deciphered the signal that described coupling obtains, and determines the error rate of described downlink data signal according to the information after the decoding.
A kind of method that realizes that signal quality detects that the embodiment of the invention provides, this method may further comprise the steps:
Physical layer receive test service set up chain circuit message after, for this test service is set up link;
After encoding, the downlink data signal that physical layer will send is transmitted to calibration network through receive path, described test antenna;
The be coupled signal of described calibration network of test antenna, and the signal that coupling obtains sent to transmission channel;
Transmission channel is transferred to physical layer with the signal that described coupling obtains; Physical layer is deciphered the signal that described coupling obtains, and determines the error rate of described downlink data signal according to the information after the decoding.
A kind of system that realizes that signal quality detects that the embodiment of the invention provides comprises:
The physical layer control unit, be used to receive test service set up chain circuit message after, for this test service is set up link; After encoding, the downlink data signal that physical layer will be sent sends to transmitter unit; The signal that the described coupling that physical layer is received obtains is deciphered, and determines the error rate of described downlink data signal according to the information after the decoding.
Transmitter unit, the downlink data signal that the physical layer that is used for receiving sends sends to test antenna;
Test antenna is used for described downlink data signal is launched, and the signal of the calibration network that coupling is obtained sends to receiving element;
Receiving element, the signal that the described coupling that is used for receiving obtains sends to physical layer.
A kind of system that realizes that signal quality detects that the embodiment of the invention provides comprises:
The physical layer control unit, be used for physical layer receive test service set up chain circuit message after, for this test service is set up link; After encoding, the downlink data signal that physical layer will be sent sends to test antenna; The signal that the described coupling that physical layer is received obtains is deciphered, and determines the error rate of described downlink data signal according to the information after the decoding;
Receiving element, the downlink data signal that the physical layer that is used for receiving sends sends to test antenna;
Test antenna is used for described downlink data signal is launched, and the signal of the calibration network that coupling is obtained sends to receiving element;
Transmitter unit, the signal that the described coupling that is used for receiving obtains sends to physical layer.
The embodiment of the invention is passed through to send downlink data signal, and deciphers receiving by the signal that coupling calibration networks is obtained, and obtains the error rate, can determine radio-frequency (RF) index according to the error rate.
Description of drawings
The schematic flow sheet of the method that Fig. 1 tests at transmission channel for the embodiment of the invention;
The schematic flow sheet of the method that Fig. 2 tests at receive path for the embodiment of the invention;
Fig. 3 is the structural representation of the system of the embodiment of the invention.
Embodiment
In embodiments of the present invention, with the power connection of test antenna, the power supply disconnection with non-test antenna can be divided into the present invention program two kinds of situations and realize that a kind of is to test at transmission channel, and a kind of is to carry out receive path at receive path.
Carry out at every antenna during test, open this road antenna during test, other antenna powers are closed.
Referring to shown in Figure 1, the method that the embodiment of the invention is tested at transmission channel may further comprise the steps:
Step 101: physical layer receive at test service set up chain circuit message after, for this test service is set up link.The type of service of described test service can be speech business, and code channel is single user's code channel.
Such as: OM controls and sends out one to physical layer and set up chain circuit message under the transmission test pattern, and the link that requires to set up is the speech business of 12.2K+2.4k.
Step 102: be transmitted to calibration network through transmission channel, described test antenna after the downlink data signal that physical layer will be sent is encoded.
The initial transmission power of the downlink transmission power under this test pattern can be configured to 10dbm,, just can guarantee the constant 10dbm of being of descending transmitted power such as closing physical layer power control switch.
Step 103: the be coupled signal of described calibration network of test antenna, and the signal that coupling obtains sent to receive path.
Step 104: receive path is transferred to physical layer with the signal that described coupling obtains.
Step 105: physical layer is deciphered the signal that described coupling obtains, and determines the error rate of described downlink data signal according to the information after the decoding.Here, physical layer is up according to the decoding of normal handling flow process, the statistics error rate (BER), and the BER that statistics can be obtained outputs to monitoring interface.And, behind EOT, notify other software modules to enter normal mode, can open all antenna powers.
In the step 103, test antenna can send to receive path with the signal that coupling obtains at the TS4 of current subframe time slot, and then receive path can send to physical layer with the signal that described coupling obtains at the TS1 of next subframe in the step 104.
Referring to shown in Figure 2, the method that the embodiment of the invention is tested at receive path may further comprise the steps:
Step 201: physical layer receive test service set up chain circuit message after, for this test service is set up link.The type of service of described test service is speech business, and code channel is single user's code channel.
Such as: OM controls and sends out one to physical layer and set up chain circuit message under the transmission test pattern, and the link that requires to set up is the speech business of 12.2K+2.4k, and is single user's solid size road.
Step 202: be transmitted to calibration network through receive path, described test antenna after the downlink data signal that physical layer will be sent is encoded.
Dispose the downlink transmission power under this test pattern, initial transmission power-25dbm of user can be closed the power control switch, just can guarantee that descending transmitted power is constant and be-25dbm.
Step 203: the be coupled signal of described calibration network of test antenna, and the signal that coupling obtains sent to transmission channel.
Step 204: transmission channel is transferred to physical layer with the signal that described coupling obtains.
Step 205: physical layer is deciphered the signal that described coupling obtains, and determines the error rate of described downlink data signal according to the information after the decoding.Here, physical layer is up according to the decoding of normal handling flow process, statistics BER, and output to monitoring interface.Notify other software modules to enter normal mode behind the EOT, open all antenna powers.
Test antenna can send to transmission channel with the signal that coupling obtains at the TS4 of current subframe time slot in the step 203, and transmission channel can send to physical layer with the signal that described coupling obtains at the TS1 of next subframe in the step 204.
By technique scheme, if the error rate of certain root antenna is very high, think that then the radio-frequency intelligent table of this passage is poor, need the artificial mutually deserved processing of carrying out.
Referring to shown in Figure 3, the system of the embodiment of the invention comprises physical layer control unit 31, transmitter unit 32, receiving element 33, test antenna 34.Transmitter unit 32 in the corresponding present embodiment of transmission channel in the foregoing description, the receiving element 33 in the corresponding present embodiment of receive path.Transmitter unit 32 comprises base band data Transmit-Receive Unit, intermediate frequency unit and transmitter radio frequency unit, and receiving element 33 comprises base band data Transmit-Receive Unit, intermediate frequency unit and receiver radio frequency unit.
When testing at transmission channel, physical layer control unit 31, be used to receive test service set up chain circuit message after, for this test service is set up link; After encoding, the downlink data signal that physical layer is sent sends to transmitter unit; The signal that the described coupling that physical layer is received obtains is deciphered, and determines the error rate of described downlink data signal according to the information after the decoding.
Transmitter unit 32, the downlink data signal that the physical layer that is used for receiving sends sends to test antenna.Wherein, when the base band data Transmit-Receive Unit receives the downlink data signal of physical layer, carry out sending to intermediate frequency unit after the Base-Band Processing, after intermediate frequency unit will be handled from the signal of base band data Transmit-Receive Unit, send to after the transmitter radio frequency unit handles, send to calibration network by test antenna.
Test antenna 34 is used for described downlink data signal is launched, and the signal of the calibration network that coupling is obtained sends to receiving element;
Receiving element 33, the signal that the described coupling that is used for receiving obtains sends to physical layer.Wherein, the receiver radio frequency unit receives the signal of test antenna coupling, send to intermediate frequency unit after handling accordingly, send to the base band data Transmit-Receive Unit after intermediate frequency unit is handled the signal of coupling and handle, the base band data Transmit-Receive Unit sends to the physical layer control unit with the signal of receiving.
Test antenna 34 is used at the TS4 of current subframe time slot the signal that coupling obtains being sent to receiving element, and then receiving element 33, is used at the TS1 of next subframe the signal that described coupling obtains being sent to physical layer.
When testing at receive path, physical layer control unit 31, be used for physical layer receive test service set up chain circuit message after, for this test service is set up link; After encoding, the downlink data signal that physical layer is sent sends to test antenna; The signal that the described coupling that physical layer is received obtains is deciphered, and determines the error rate of described downlink data signal according to the information after the decoding.
Receiving element 33, the downlink data signal that the physical layer that is used for receiving sends sends to test antenna.Wherein, when the base band data Transmit-Receive Unit receives the downlink data signal of physical layer, carry out sending to intermediate frequency unit after the Base-Band Processing, after intermediate frequency unit will be handled from the signal of base band data Transmit-Receive Unit, send to after the receiver radio frequency unit handles, send to calibration network by test antenna.
Test antenna 34 is used for described downlink data signal is launched, and the signal of the calibration network that coupling is obtained sends to receiving element.
Transmitter unit 32, the signal that the described coupling that is used for receiving obtains sends to physical layer.Wherein, the transmitter radio frequency unit receives the signal of test antenna coupling, send to intermediate frequency unit after handling accordingly, send to the base band data Transmit-Receive Unit after intermediate frequency unit is handled the signal of coupling and handle, the base band data Transmit-Receive Unit sends to the physical layer control unit with the signal of receiving.
Test antenna 34 is used at the TS4 of current subframe time slot the signal that coupling obtains being sent to transmitter unit, and then transmitter unit 32, is used at the TS1 of next subframe the signal that described coupling obtains being sent to physical layer.
Transmitter unit 32 comprises base band data Transmit-Receive Unit, intermediate frequency unit and transmitter radio frequency unit, wherein, when the base band data Transmit-Receive Unit receives the downlink data signal of physical layer, carry out sending to intermediate frequency unit after the Base-Band Processing, after intermediate frequency unit will be handled from the signal of base band data Transmit-Receive Unit, send to after the transmitter radio frequency unit handles, send to calibration network by test antenna.
Receiving element 33 comprises base band data Transmit-Receive Unit, intermediate frequency unit and receiver radio frequency unit.Wherein, the receiver radio frequency unit receives the signal of test antenna coupling, send to intermediate frequency unit after handling accordingly, send to the base band data Transmit-Receive Unit after intermediate frequency unit is handled the signal of coupling and handle, the base band data Transmit-Receive Unit sends to the physical layer control unit with the signal of receiving.
The embodiment of the invention promptly sends sequence, and deciphers receiving by the signal that coupling calibration networks is obtained by sending downlink data signal, obtains BER, can determine radio-frequency (RF) index according to BER.
Because TD_SCDMA generally adopts antenna system that many antennas are arranged, require to guarantee each antenna consistency in the time of design.The signal that sends of physical layer arrives radio frequency interface like this, and then receives, the error rate of every antenna measurement should be consistent and signal quality good.If the error rate of certain root antenna is very high, think that then the radio-frequency intelligent table of this passage is poor, need the artificial mutually deserved processing of carrying out.For outdoor environment, the radio frequency problem may be difficult to position, and after the use present embodiment scheme, can significantly reduce the manpower and materials cost, raises the efficiency.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. a method that realizes that signal quality detects is characterized in that the power supply of test antenna is in on-state, and the power supply of non-test antenna is in off-state, and this method may further comprise the steps:
Physical layer receive at test service set up chain circuit message after, for this test service is set up link;
After encoding, the downlink data signal that physical layer will send is transmitted to calibration network through transmission channel, described test antenna; The be coupled signal of described calibration network of test antenna, and the signal that coupling obtains sent to receive path;
Receive path is transferred to physical layer with the signal that described coupling obtains; Physical layer is deciphered the signal that described coupling obtains, and determines the error rate of described downlink data signal according to the information after the decoding.
2. method according to claim 1 is characterized in that, test antenna sends to receive path at the TS4 of current subframe time slot with the signal that coupling obtains, and receive path sends to physical layer at the TS1 of next subframe with the signal that described coupling obtains.
3. method according to claim 1 is characterized in that, the type of service of described test service is speech business, and code channel is single user's code channel.
4. a method that realizes that signal quality detects is characterized in that the power supply of test antenna is in on-state, and the power supply of non-test antenna is in off-state, and this method may further comprise the steps:
Physical layer receive test service set up chain circuit message after, for this test service is set up link;
After encoding, the downlink data signal that physical layer will send is transmitted to calibration network through receive path, described test antenna;
The be coupled signal of described calibration network of test antenna, and the signal that coupling obtains sent to transmission channel;
Transmission channel is transferred to physical layer with the signal that described coupling obtains; Physical layer is deciphered the signal that described coupling obtains, and determines the error rate of described downlink data signal according to the information after the decoding.
5. method according to claim 4 is characterized in that, test antenna sends to transmission channel at the TS4 of current subframe time slot with the signal that coupling obtains, and transmission channel sends to physical layer at the TS1 of next subframe with the signal that described coupling obtains.
6. method according to claim 4 is characterized in that, the type of service of described test service is speech business, and code channel is single user's code channel.
7. a system that realizes that signal quality detects is characterized in that, comprising:
The physical layer control unit, be used to receive test service set up chain circuit message after, for this test service is set up link; After encoding, the downlink data signal that physical layer will be sent sends to transmitter unit; The signal that the described coupling that physical layer is received obtains is deciphered, and determines the error rate of described downlink data signal according to the information after the decoding;
Transmitter unit, the downlink data signal that the physical layer that is used for receiving sends sends to test antenna;
Test antenna is used for described downlink data signal is launched, and the signal of the calibration network that coupling is obtained sends to receiving element;
Receiving element, the signal that the described coupling that is used for receiving obtains sends to physical layer.
8. system according to claim 7, it is characterized in that test antenna is used at the TS4 of current subframe time slot the signal that coupling obtains being sent to receiving element, then receiving element is used at the TS1 of next subframe the signal that described coupling obtains being sent to physical layer.
9. a system that realizes that signal quality detects is characterized in that, comprising:
The physical layer control unit, be used for physical layer receive test service set up chain circuit message after, for this test service is set up link; After encoding, the downlink data signal that physical layer will be sent sends to test antenna; The signal that the described coupling that physical layer is received obtains is deciphered, and determines the error rate of described downlink data signal according to the information after the decoding;
Receiving element, the downlink data signal that the physical layer that is used for receiving sends sends to test antenna;
Test antenna is used for described downlink data signal is launched, and the signal of the calibration network that coupling is obtained sends to receiving element;
Transmitter unit, the signal that the described coupling that is used for receiving obtains sends to physical layer.
10. system according to claim 9, it is characterized in that test antenna is used at the TS4 of current subframe time slot the signal that coupling obtains being sent to transmitter unit, then transmitter unit is used at the TS1 of next subframe the signal that described coupling obtains being sent to physical layer.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2009102414725A CN102088716A (en) | 2009-12-03 | 2009-12-03 | Method and system for realizing signal quality detection |
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| CN2009102414725A CN102088716A (en) | 2009-12-03 | 2009-12-03 | Method and system for realizing signal quality detection |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857308A (en) * | 2012-04-24 | 2013-01-02 | 苏州科技学院 | Slow frequency-hopping communication experiment system of industrial multi-hop link |
| CN114443400A (en) * | 2022-04-11 | 2022-05-06 | 飞腾信息技术有限公司 | Signal testing method and device, system on chip, electronic device and storage medium |
| CN115499350A (en) * | 2021-06-03 | 2022-12-20 | 大唐移动通信设备有限公司 | Method and device for testing downlink |
-
2009
- 2009-12-03 CN CN2009102414725A patent/CN102088716A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102857308A (en) * | 2012-04-24 | 2013-01-02 | 苏州科技学院 | Slow frequency-hopping communication experiment system of industrial multi-hop link |
| CN102857308B (en) * | 2012-04-24 | 2015-08-05 | 苏州科技学院 | industrial multi-hop link slow frequency hopping communication experiment system |
| CN115499350A (en) * | 2021-06-03 | 2022-12-20 | 大唐移动通信设备有限公司 | Method and device for testing downlink |
| CN115499350B (en) * | 2021-06-03 | 2023-10-20 | 大唐移动通信设备有限公司 | Method and device for testing downlink |
| CN114443400A (en) * | 2022-04-11 | 2022-05-06 | 飞腾信息技术有限公司 | Signal testing method and device, system on chip, electronic device and storage medium |
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Application publication date: 20110608 |