CN101466104A - Method, system and device for detecting down interference source - Google Patents

Method, system and device for detecting down interference source Download PDF

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Publication number
CN101466104A
CN101466104A CNA2007103020399A CN200710302039A CN101466104A CN 101466104 A CN101466104 A CN 101466104A CN A2007103020399 A CNA2007103020399 A CN A2007103020399A CN 200710302039 A CN200710302039 A CN 200710302039A CN 101466104 A CN101466104 A CN 101466104A
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CN
China
Prior art keywords
base station
terminal
interference
described base
neighbours
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Pending
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CNA2007103020399A
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Chinese (zh)
Inventor
冯淑兰
刘劲楠
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Priority to CNA2007103020399A priority Critical patent/CN101466104A/en
Priority to PCT/CN2008/073290 priority patent/WO2009079956A1/en
Publication of CN101466104A publication Critical patent/CN101466104A/en
Pending legal-status Critical Current

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Abstract

The embodiment of the invention discloses a downlink interference source detecting method, which comprises the steps as follows: a basic station detects an uplink interference signal from the adjacent system terminal; and the basic station can determine the basic station to be the downlink interference source of the adjacent system terminal according to the detected result of the uplink interference signal. Through the embodiment of the invention, the basic station can determine whether the basic station is the downlink interference source of the adjacent system terminal or not according to the detected result of the uplink interference signal of the adjacent system terminal, so as to realize that the detection for the downlink interference source can be completed without dividing extra downlink interference transmission intervals to transmit the downlink interference signal, save the space resource, and also reduce the implementation complexity of the basic station and the terminal.

Description

A kind of detection method of down interference source, system and device
Technical field
The present invention relates to communication technical field, particularly a kind of detection method of down interference source, system and device.
Background technology
Along with development of wireless communication devices, more and more stronger to the demand of wireless frequency spectrum.But according to ITU (International Telecommunication Union, International Telecommunications Union) radio regulation(s) frequency partition, the scope of the operable radio frequency of present various wireless traffics is that 9KHz is to 275GHz.Because the finiteness of radio spectrum resources, radio spectrum resources becomes a kind of more and more rare resource.In order to improve wireless frequency spectrum better, particularly authorize the availability of frequency spectrum of frequency range, cognitive radio technology was proposed in recent years, support the wireless device of cognitive radio technology to want dynamic perception surrounding environment, and according to its internal state of the adaptive adjustment of the variation of environment, thereby effectively utilize idle frequency spectrum, and avoid the interference of the interference to other system, particularly authorized user.On the other hand, because radio spectrum resources is very valuable, particularly in the frequency range that does not have well to plan the zone or do not have permission, tending to has a plurality of wireless device operations at identical channel, therefore, system needs real-time detection and judges interference source, and holds consultation with interference source, to evade interference, guarantee communication quality.
Prior art is divided into descending interference and uplink interference with interference relationships, and descending interference is meant that terminal detects the descending interference from the neighbours system, and uplink interference is meant that the base station detects the uplink interference from the terminal of neighbours system.For correct detection and judgement down interference source, prior art adopts at predefined time slot, be called descending compossibility message interval or descending compossibility signaling at interval, the base station sends and comprises base station IDs (Identifier, identify) and out of Memory, base station IP (Internet Protocol for example, Internet Protocol) signal of address information, be called descending compossibility message or signaling, if terminal can be at these predetermined time slots, receive signal from other system base-station, and obtain the base station IDs wherein comprised, and/or base station IP address information, and/or the IP address of acting on behalf of Proxy of base station, then terminal can be judged the descending interference that oneself is subjected to from institute's base stations detected.For correct detection and judgement interference source in up going route, prior art adopts at predefined time slot, be called up compossibility message interval, terminal sends and comprises Termination ID and Terminal Service base station IDs and out of Memory, the signal of base station IP address information for example, be called up compossibility message, if the base station can detect signal from other system terminal at these up compossibility message intervals, and obtain the information wherein comprised, then the uplink interference that oneself is subjected to from the terminal of received signal can be judged in the base station.
The method that the another kind that prior art proposes detects down interference source is at the terminal SS1 of certain B of system (Stated Station, when fixed station) detecting certain A of neighbours system and be the down interference source of terminal SS1 of certain B of system, also need the terminal SS1 of the B of system further to send the uplink interference source signal, whether the A of neighbours system is caused uplink interference with the terminal SS1 that determines the B of system to the A of neighbours system; If when perhaps certain A of neighbours system detects interference source in up going route from the terminal SS1 of the B of neighbours system, also need base station A to send the terminal of down interference source signal, whether the terminal SS1 of the B of system is caused descending interference to determine base station A to the B of system.Because up-downgoing is disturbed respectively and detected, the interface-free resources that takies is more, and efficient is lower.In addition, base station and terminal need be carried out corresponding signal transmission and detection at two kinds of Interference Detection, have increased the complexity of base station and terminal.
In realizing process of the present invention, the inventor finds that there is following shortcoming at least in prior art: the method for existing detection down interference source need use extra interface-free resources transmission to be used for the signal that down interference source detects, interface-free resources has been caused certain waste, and base station and terminal also need to increase functions such as certain uplink signal transmissions and detection, have increased the complexity of base station and terminal.
Summary of the invention
The embodiment of the invention provides a kind of detection method, system and device of down interference source, does not transmit descending interference signal to realize the outer interface-free resources of occupying volume, and does not finish detection to down interference source for base station and terminal increase extra function.
For achieving the above object, the embodiment of the invention provides a kind of detection method of down interference source on the one hand, may further comprise the steps: the uplink interference signal from the terminal of neighbours system is detected in the base station; Described base station determines that according to the testing result of described uplink interference signal described base station is the down interference source of the terminal of described neighbours system.
On the other hand, the embodiment of the invention also provides a kind of detection system of down interference source, comprising: the terminal of neighbours system is used to launch the uplink interference signal; The base station is used to detect the uplink interference signal from the terminal of neighbours system, and determines that according to the testing result of described uplink interference signal described base station is the down interference source of the terminal of described neighbours system.
On the one hand, the embodiment of the invention also provides a kind of base station, comprising: signal detection module is used to detect the uplink interference signal from the terminal of neighbours system again; The interference source determination module is used for according to described signal detection module the testing result of described uplink interference signal being determined that described base station is the down interference source of the terminal of described neighbours system.
Compared with prior art, the embodiment of the invention has the following advantages: by the embodiment of the invention, the base station basis determines to the testing result of the uplink interference signal of the terminal of neighbours system whether this base station is the down interference source of the terminal of neighbours system.Therefore, need not detect the extra descending interference transmission intercal of division and transmit descending interference signal, save interface-free resources, also reduce the implementation complexity of base station and terminal at down interference source.
Description of drawings
Fig. 1 is the flow chart of the detection method of embodiment of the invention down interference source;
Fig. 2 is the structure chart of the detection system of embodiment of the invention down interference source.
Embodiment
The embodiment of the invention provides a kind of detection method of down interference source, and the uplink interference signal from the terminal of neighbours system is detected in the base station, and determines according to the testing result of uplink interference signal whether this base station is the down interference source of the terminal of neighbours system.Transmit descending interference signal and just can finish detection thereby not needing to have realized dividing extra descending interference transmission intercal, saved interface-free resources, also reduced the implementation complexity of base station and terminal down interference source.
As shown in Figure 1, the flow chart for the detection method of embodiment of the invention down interference source specifically may further comprise the steps:
Step S101, the uplink interference signal from the terminal of neighbours system is detected in the base station.
Step S102, the down interference source of this base station for the terminal of neighbours system determined according to the testing result of uplink interference signal in the base station.The testing result of this uplink interference signal comprises that the base station has detected from the uplink interference signal of the terminal of neighbours system and this base station and does not detect uplink interference signal from the terminal of neighbours system.
Do not detect uplink interference signal from the terminal of neighbours system if the testing result of this uplink interference signal is the base station, then this base station determines that this base station is not the down interference source of the terminal of neighbours system.
Detected uplink interference signal from the terminal of neighbours system if the testing result of this uplink interference signal is the base station, then this base station determines that this base station is the down interference source of the terminal of neighbours system.
The information that the base station can also be further comprised in the uplink interference signal according to the terminal of this detected neighbours system, determine whether this base station is the down interference source of the terminal of neighbours system, and the method for determining is as follows:
After the terminal uplink interference signal that detects from the neighbours system, the base station can be according to the information that is comprised in this uplink interference signal, determine the received signal power of this base station to the terminal of neighbours system, and EIRP of the terminal to transmit uplink interference signal of this neighbours system (Effective Isotropic RadiatedPower, effective isotropic radiated power) and receiving antenna gain.The base station can be according to EIRP and the receiving antenna gain of this base station to the terminal to transmit uplink interference signal of the received signal power of the terminal of neighbours system, neighbours system then, and the maximum transmission power of this base station, receiving antenna gain and transmitter antenna gain (dBi) are determined the interference power of this base station to the terminal of neighbours system.
When this base station is P to the received signal power of the terminal of neighbours system RX_NSS, the EIRP of the terminal to transmit uplink interference signal of neighbours system is P EIRP_NSS, the receiving antenna gain of the terminal of this neighbours system is G RX_NSS, the maximum transmission power of this base station is P MAX_TX_BS, the receiving antenna gain of this base station is G RX_BS, the transmitter antenna gain (dBi) of this base station is G TX_BSThe time, this base station is to the interference power P of the terminal of neighbours system RX_BSFor:
P RX_BS＝P MAX_TX_BS+G RX_NSS-P EIRP_NSS+P RX_NSS+(G TX_BS-G RX_BS) (1)
Wherein, P EIRP_NSS=P TX_NSS+ G TX_SS, P TX_NSSBe the transmitting power of the terminal of neighbours system, G TX_SSTransmitter antenna gain (dBi) for the terminal of neighbours system.
After obtaining the interference power of this base station to the terminal of neighbours system, this base station judges that whether resulting interference power is greater than predetermined threshold, if greater than, determine that then this base station is the down interference source of the terminal of neighbours system, otherwise, determine that this base station is not the down interference source of the terminal of neighbours system.
Further, this base station size to the interference power of the terminal of neighbours system when transmitting with any transmitting power can also be calculated in the base station, at this moment as long as in formula (1), with the possible transmitting power P in base station CURR_TX_BSReplace the maximum transmission power P of base station MAX_TX_BSGet final product, as the formula (2).
P RX_BS＝P CURR_TX_BS+G RX_NSS-P EIRP_NSS+P RX_NSS+(G TX_BS-G RX_BS) (2)
Preferably, a plurality of threshold values can be set, for example: first threshold value, second threshold value and the 3rd threshold value, and the interference power estimated value that obtains according to previous step, to determine the interference rank of base station to the terminal of neighbours system.For example, one-level down interference source, secondary down interference source and three ranks of three grades of down interference sources can be set, wherein the one-level down interference source is low interference source, the acceptable interference source of secondary down interference source, and three grades of down interference sources are serious interference source.If less than first threshold value, then this base station is not the down interference source of the terminal of neighbours system to the interference power of the terminal of neighbours system in this base station;
If more than or equal to first threshold value and less than second threshold value, then this base station is the one-level down interference source of the terminal of neighbours system to the interference power of the terminal of neighbours system in this base station.
If more than or equal to second threshold value and less than the 3rd threshold value, then this base station is the secondary down interference source of the terminal of neighbours system to the interference power of the terminal of neighbours system in this base station.
If more than or equal to the 3rd threshold value, then this base station is three grades of down interference sources of the terminal of neighbours system to the interference power of the terminal of neighbours system in this base station.
The detection method of above-mentioned down interference source, the base station basis determines to the testing result of the uplink interference signal of the terminal of neighbours system whether this base station is the down interference source of the terminal of neighbours system, thereby need not detect and send descending Interference Detection signal at down interference source, do not need the outer interface-free resources of occupying volume yet, improve the efficient of eating dishes without rice or wine, reduced the implementation complexity of base station and terminal simultaneously.
As shown in Figure 2, be the structure chart of the detection system of embodiment of the invention down interference source, comprising: the terminal 1 of neighbours system is used to launch the uplink interference signal; Base station 2 is used to detect the uplink interference signal from the terminal 1 of neighbours system, and determines the down interference source of base station 2 for the terminal 1 of neighbours system according to the testing result of this uplink interference signal.
Wherein, base station 2 comprises: signal detection module 21 is used to detect the uplink interference signal from the terminal 1 of neighbours system;
Interference source determination module 22 is used for determining the down interference source of base station 2 for the terminal 1 of neighbours system according to the testing result of 21 pairs of uplink interference signals of signal detection module.
Wherein, interference source determination module 22 comprises: power is determined submodule 221, is used for determining according to the testing result of 21 pairs of uplink interference signals of signal detection module the interference power of the terminal 1 of the 2 pairs of neighbours systems in base station;
Judge submodule 222, be used to judge that whether interference power that power determines that submodule 221 determines is greater than predetermined threshold;
Determine submodule 223, be used for when judging that the interference power of terminal 1 that submodule 222 is judged the 2 pairs of neighbours systems in base stations is greater than predetermined threshold, determining the down interference source of base station 2 for the terminal 1 of neighbours system.
Wherein, power determines that submodule 221 is specially interference power and determines submodule, the EIRP and the receiving antenna gain that are used for the terminal 1 emission uplink interference signal of received power, neighbours system according to the terminal 1 of the 2 pairs of neighbours systems in base station, and the maximum transmission power of base station 2, receiving antenna gain and transmitter antenna gain (dBi) are determined the interference power of the terminal 1 of the 2 pairs of neighbours systems in base station.
The detection system of above-mentioned down interference source, base station 2 bases determine to the testing result of the uplink interference signal of the terminal 1 of neighbours system whether this base station 2 is the down interference source of the terminal 1 of neighbours system, thereby having realized need not dividing extra descending interference transmission intercal transmits descending interference signal and just can finish detection to down interference source, save interface-free resources, also reduced the implementation complexity of base station 2 and terminal 1.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential general hardware platform, can certainly pass through hardware, but the former is better execution mode under a lot of situation.Based on such understanding, the part that technical scheme of the present invention contributes to prior art in essence in other words can embody with the form of software product, this computer software product is stored in the storage medium, comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of each embodiment of the present invention.
More than disclosed only be several specific embodiment of the present invention, still, the present invention is not limited thereto, any those skilled in the art can think variation all should fall into protection scope of the present invention.

Claims (14)

1, a kind of detection method of down interference source is characterized in that, may further comprise the steps:
The uplink interference signal from the terminal of neighbours system is detected in the base station;
Described base station determines that according to the testing result of described uplink interference signal described base station is the down interference source of the terminal of described neighbours system.
2, the detection method of down interference source according to claim 1 is characterized in that, described base station determines that according to the testing result of described uplink interference signal described base station is that the down interference source of the terminal of described neighbours system specifically comprises:
If the testing result of described uplink interference signal is described base station has detected the uplink interference signal of the terminal of described neighbours system, then described base station determines that described base station is the down interference source of the terminal of described neighbours system; Perhaps,
The interference power of described base station to the terminal of described neighbours system determined according to the testing result of described uplink interference signal in described base station, and judge that whether described interference power is greater than predetermined threshold, if determine that greater than, then described base station described base station is the down interference source of the terminal of described neighbours system.
As the detection method of down interference source as described in the claim 2, it is characterized in that 3, described base station determines that according to the testing result of described uplink interference signal described base station specifically comprises the interference power of the terminal of described neighbours system:
Described base station is according to effective isotropic radiated power EIRP and the receiving antenna gain of described base station to the terminal to transmit uplink interference signal of the received signal power of the terminal of described neighbours system, described neighbours system, and the maximum transmission power of described base station, receiving antenna gain and transmitter antenna gain (dBi) are determined the interference power of described base station to the terminal of described neighbours system.
4, as the detection method of down interference source as described in the claim 3, it is characterized in that, when described base station is P to the received signal power of the terminal of described neighbours system RX_NSS, the EIRP of the terminal to transmit uplink interference signal of described neighbours system is P EIRP_NSS, the receiving antenna gain of the terminal of described neighbours system is G RX_NSS, the maximum transmission power of described base station is P MAX_TX_BS, the receiving antenna gain of described base station is G RX_BS, the transmitter antenna gain (dBi) of described base station is G TX_BSThe time, described base station is to the interference power P of the terminal of described neighbours system RX_BSFor:
P RX_BS＝P MAX_TX_BS+G RX_NSS-P EIRP_NSS+P RX_NSS+(G TX_BS-G RX_BS)。
5, as the detection method of down interference source as described in the claim 4, it is characterized in that the transmitting power when described base station is P CURR_TX_BSThe time, when described base station transmits with any transmitting power to the interference power P of the terminal of described neighbours system RX_BSFor:
P RX_BS＝P CURR_TX_BS+G RX_NSS-P EIRP_NSS+P RX_NSS+(G TX_BS-G RX_BS)。
6, as the detection method of down interference source as described in the claim 2, it is characterized in that described predetermined threshold is: first threshold value,
If less than described first threshold value, then described base station is not the down interference source of the terminal of described neighbours system to the interference power of the terminal of neighbours system in described base station.
7, as the detection method of down interference source as described in the claim 2, it is characterized in that described predetermined threshold comprises: first threshold value and second threshold value,
If more than or equal to described first threshold value and less than described second threshold value, then described base station is the one-level down interference source of the terminal of described neighbours system to the interference power of the terminal of neighbours system in described base station.
8, as the detection method of down interference source as described in the claim 2, it is characterized in that described predetermined threshold comprises: first threshold value, second threshold value and the 3rd threshold value,
If more than or equal to second threshold value and less than the 3rd threshold value, then described base station is the secondary down interference source of the terminal of described neighbours system to the interference power of the terminal of neighbours system in described base station.
9, as the detection method of down interference source as described in the claim 8, it is characterized in that, also comprise: if described base station to the interference power of the terminal of neighbours system more than or equal to the 3rd threshold value, then described base station is three grades of down interference sources of the terminal of described neighbours system.
10, a kind of detection system of down interference source is characterized in that, comprising:
The terminal of neighbours system is used to launch the uplink interference signal;
The base station is used to detect the uplink interference signal from the terminal of neighbours system, and determines that according to the testing result of described uplink interference signal described base station is the down interference source of the terminal of described neighbours system.
11, as the detection system of down interference source as described in the claim 10, it is characterized in that described base station comprises:
Signal detection module is used to detect the uplink interference signal from the terminal of described neighbours system;
The interference source determination module is used for according to described signal detection module the testing result of described uplink interference signal being determined that described base station is the down interference source of the terminal of described neighbours system.
12, a kind of base station is characterized in that, comprising:
Signal detection module is used to detect the uplink interference signal from the terminal of neighbours system;
The interference source determination module is used for according to described signal detection module the testing result of described uplink interference signal being determined that described base station is the down interference source of the terminal of described neighbours system.
13, as base station as described in the claim 12, it is characterized in that described interference source determination module comprises:
Power is determined submodule, is used for according to described signal detection module the testing result of described uplink interference signal being determined the interference power of described base station to the terminal of described neighbours system;
Judge submodule, be used to judge that whether interference power that described power determines that submodule determines is greater than predetermined threshold;
Determine submodule, be used for judging described base station to the interference power of the terminal of neighbours system during, determine that described base station is the down interference source of the terminal of described neighbours system greater than predetermined threshold when described judgement submodule.
14, as base station as described in the claim 13, it is characterized in that, described power determines that submodule is specially interference power and determines submodule, be used for according to EIRP and the receiving antenna gain of described base station, and the maximum transmission power of described base station, receiving antenna gain and transmitter antenna gain (dBi) are determined the interference power of described base station to the terminal of described neighbours system the terminal to transmit uplink interference signal of the received power of the terminal of described neighbours system, described neighbours system.
CNA2007103020399A 2007-12-20 2007-12-20 Method, system and device for detecting down interference source Pending CN101466104A (en)

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CNA2007103020399A CN101466104A (en) 2007-12-20 2007-12-20 Method, system and device for detecting down interference source
PCT/CN2008/073290 WO2009079956A1 (en) 2007-12-20 2008-12-02 Method and system for detecting downlink interference source, and the device thereof

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102892121A (en) * 2011-07-22 2013-01-23 中兴通讯股份有限公司 Method and system for lowering downlink out-of-band radiated interference of micro cell to macro cell terminal
WO2016120696A1 (en) * 2015-01-30 2016-08-04 Huawei Technologies Co., Ltd. Method and system for validating interfering signals
CN110072249A (en) * 2018-01-23 2019-07-30 大唐移动通信设备有限公司 A kind of method and apparatus of detection base station interference

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2002211522A1 (en) * 2000-10-11 2002-04-22 Ericsson Inc. A system and method for applying reciprocity for downlink interference identification
JP4592506B2 (en) * 2005-06-15 2010-12-01 株式会社東芝 Uplink interference source locating apparatus and method
CN1956357A (en) * 2005-10-25 2007-05-02 华为技术有限公司 Collection and report method for interference resource information

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102892121A (en) * 2011-07-22 2013-01-23 中兴通讯股份有限公司 Method and system for lowering downlink out-of-band radiated interference of micro cell to macro cell terminal
CN102892121B (en) * 2011-07-22 2017-09-29 中兴通讯股份有限公司 The method and system that reduction Microcell is disturbed the descending out-of-band radiation of macro cell terminal
WO2016120696A1 (en) * 2015-01-30 2016-08-04 Huawei Technologies Co., Ltd. Method and system for validating interfering signals
CN107211292A (en) * 2015-01-30 2017-09-26 华为技术有限公司 Confirm the method and system of interference signal
CN110072249A (en) * 2018-01-23 2019-07-30 大唐移动通信设备有限公司 A kind of method and apparatus of detection base station interference
CN110072249B (en) * 2018-01-23 2020-12-04 大唐移动通信设备有限公司 Method and device for detecting base station interference

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