CN103188028B - A kind of signal interference method and signal disturbing device - Google Patents
A kind of signal interference method and signal disturbing device Download PDFInfo
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- CN103188028B CN103188028B CN201110451265.XA CN201110451265A CN103188028B CN 103188028 B CN103188028 B CN 103188028B CN 201110451265 A CN201110451265 A CN 201110451265A CN 103188028 B CN103188028 B CN 103188028B
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Abstract
The invention discloses a kind of signal interference method and signal disturbing device, utilize the acquisition of signal disturbing device from the synchronizing signal of base station, and carry out differentiating uplink and downlink time slot according to the gap information comprised in described synchronizing signal, only in descending time slot, launch interference signal, solve the signal disturbing device that exists in prior art cannot differentiating uplink and downlink time slot, interference is also produced on ascending time slot thus affects the problem of network quality.
Description
Technical field
The present invention relates to communication technical field, particularly relate to a kind of signal interference method and signal disturbing device.
Background technology
At present under some special scenes, as all kinds of examination hall, school, church, court, prison, place of military importance etc. prohibit the use the place of the communication terminals such as mobile phone, usual use signal disturbing device carries out signal shielding to communication terminal, mess code interference is formed in the message signals that the interference signal that described signal disturbing device sends can receive at communication terminal, disturbed communication terminal is made can not normally to detect the data sent from base station, thus cannot set up with base station and connect, show as search network, no signal, without phenomenons such as service systems.
Current signal disturbing device can be applied in global system for mobile communications (Global System of Mobilecommunication, GSM), code division multiple access (Code Division Multiple Access, CDMA), in the communication system such as CDMA2000 and Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access, WCDMA).Due to when using signal disturbing device to disturb the communication terminal in base station portion coverage, if disturb the uplink band of communication system, mess code is there is in the upward signal that base station can be caused to receive, thus cause the communication between the communication terminal in the whole coverage in base station and this base station to be affected, reduce network quality.
To this, when current signal disturbing device disturbs communication terminal, by the setting to frequency range, only continual full-time gap signal disturbing is produced to the band downlink of each communication system, avoid the problem of the network quality decline caused when uplink band is disturbed.
But, for time division communication system, as TD SDMA (TimeDivision-Synchronous Code Division Multiple Access, TD-SCDMA), time-division Long Term Evolution (Time Division-Long Term Evolution, the communication system such as TD-LTE), because it belongs to up-downgoing with frequency system, the uplink and downlink of signal can only be distinguished by slot time, when adopting above-mentioned signal disturbing device to carry out signal disturbing to it, because signal disturbing device cannot distinguish the uplink and downlink timeslot of time division communication system signal, thus cause while the downstream signal of time division communication system is disturbed, also interference is caused to its upward signal, mess code is there is in the upward signal that base station is received, cause user in the whole coverage in this base station normally cannot use business, affect network quality.
Summary of the invention
Embodiments provide a kind of signal interference method and signal disturbing device, in order to solve the signal disturbing device that exists in prior art cannot differentiating uplink and downlink time slot, interference is also produced on ascending time slot thus affects the problem of network quality.
A kind of signal disturbing device, described signal disturbing device comprises lock unit and interference signal processing unit:
Described lock unit, for obtaining the synchronizing signal from base station, and sending to signal processing unit by described synchronizing signal, comprising the gap information of subframe in described synchronizing signal;
Described interference signal processing unit, for according to described synchronizing signal determination descending time slot, and launches interference signal in descending time slot.
A kind of signal interference method, described method comprises:
Signal disturbing device obtains the synchronizing signal from base station, comprises the gap information of subframe in described synchronizing signal;
Signal disturbing device according to described synchronizing signal determination descending time slot, and launches interference signal in descending time slot.
Beneficial effect of the present invention is:
Embodiments provide a kind of signal interference method and signal disturbing device, utilize the acquisition of signal disturbing device from the synchronizing signal of base station, and carry out differentiating uplink and downlink time slot according to the gap information comprised in described synchronizing signal, only in descending time slot, launch interference signal, and in ascending time slot, do not launch interference signal, solve the signal disturbing device that exists in prior art cannot differentiating uplink and downlink time slot, interference is also produced on ascending time slot thus affects the problem of network quality.
Accompanying drawing explanation
Fig. 1 (a) is depicted as the structural representation of signal disturbing device in the embodiment of the present invention one;
Fig. 1 (b) is depicted as the internal structure schematic diagram of lock unit in the embodiment of the present invention one;
Fig. 1 (c) is depicted as the internal structure schematic diagram of interference signal processing unit in the embodiment of the present invention one;
Figure 2 shows that the structure of time slot schematic diagram of TD-SCDMA communication system subframe;
Figure 3 shows that signal interference method schematic flow sheet in the embodiment of the present invention two.
Embodiment
Below in conjunction with Figure of description, embodiments of the present invention is further illustrated, but the present invention is not limited to the following examples.
Embodiment one:
Signal disturbing device described in the embodiment of the present invention one can be applied in time division communication system, as in the communication systems such as TD-SCDMA and TD-LTE; Particularly, the embodiment of the present invention one, for TD-SCDMA communication system, is described in detail to described signal disturbing device.
As shown in Fig. 1 (a), be the structural representation of signal disturbing device in the embodiment of the present invention one, described signal disturbing device comprises lock unit 11 and interference signal processing unit 12, wherein:
Described synchronizing signal for obtaining the synchronizing signal from base station, and is sent to interference signal processing unit 12 by described lock unit 11, comprises the gap information of subframe in described synchronizing signal, and described subframe can be one or more; Described interference signal processing unit 12 for according to described synchronizing signal determination descending time slot, and launches interference signal in descending time slot.
Particularly, as shown in Fig. 1 (b), be the internal structure schematic diagram of lock unit 11, described lock unit 11 comprises Signal reception subelement 111 and synchronizing signal conversion subelement 112.
Described signal for obtaining the signal from base station, and sends to synchronizing signal to change subelement 112 by described Signal reception subelement 111; Described Signal reception subelement 111 can be external reception antenna or global positioning system (Global Positioning System, GPS), usually be placed on outdoor unscreened place, and send to synchronizing signal to change subelement 112 the described signal got from base station by the wired modes such as RF cable or communication; Also described Signal reception subelement 111 is not limited to for being integrated in the built-in aerial of signal disturbing device inside or built-in GPS in the scheme of the present embodiment.
Described synchronizing signal conversion subelement 112, primarily of digital analog mixed IC composition, synchronously processes for the described signal got by Signal reception subelement 111, obtains synchronizing signal, and described synchronizing signal is sent to interference signal processing unit 12; Particularly, described synchronizing signal conversion subelement 112 carries out extraction and the analog-to-digital conversion of signal from the described signal got by digital analog mixed IC, obtain synchronizing signal, and described synchronizing signal is sent to interference signal processing unit 12; The synchronizing signal that described synchronizing signal obtains after changing subelement 112 synchronously process is digital synchronization signal.
For TD-SCDMA communication system, in order to realize the functions such as fast power control and timing advance calibration, by third generation partner program (The 3rd Generation Partnership Project, the radio frames of 1 10ms 3GPP) defined is divided into 2 identical subframes of structure, as shown in Figure 2, be the structure of time slot schematic diagram of TD-SCDMA communication system subframe, each subframe duration is 5ms, take 6400 chips, be made up of 3 special time slots and 7 regular time slots.
Described 3 special time slots are respectively descending pilot frequency time slot (Downlink Pilot Time Slot, DwPTS, 96 chips), main protection time slot (Guard Period, GP, 96 chips) and uplink pilot time slot (Uplink Pilot Time Slot, UpPTS, 160 chips); Described 7 regular time slots are TS0 ~ TS6, be 864 chips, for transmitting user data or control information, wherein, TS0 is fixed as descending time slot, be mainly used in configuration Primary Common Control Physical Channel (Primary Common Control PhysicalChannel, PCCPCH), Page Indication Channel (Paging Indicator Channel, and forward access channel (Forward Access Channel PICH), the common signal channel such as FACH), controls the covering of community and service access; TS1 ~ TS6 is business time-slot, be mainly used in the carrying of business datum, wherein TS1 is fixed as ascending time slot, and other regular time slots can be configured to ascending time slot or descending time slot as required neatly, to realize the transmission of asymmetric traffic (as Packet data service).At present, define the time slot proportion in 3 kinds of TD-SCDMA communication systems in 3GPP, its uplink and downlink timeslot ratio is respectively: 2: 4,1: 5 and 3: 3.
Particularly, if for a certain community, the time slot proportion arranging a certain subframe in the base station of TD-SCDMA communication system is 2: 4, wherein TS1, TS2 are ascending time slot, TS0 and TS3 ~ TS6 is descending time slot, then synchronizing signal conversion is after the signal that Signal reception subelement 111 gets synchronously processes by subelement 112, in the synchronizing signal obtained this subframe gap information in also contains that TS1, TS2 of representing this subframe are ascending time slot, TS0 and TS3 ~ TS6 is the content of descending time slot.
Preferably, described lock unit 11 also comprises synchronizing signal adjustment subelement 113.
Described synchronizing signal adjustment subelement 113 mainly digital IC circuit, corresponding relation between the network slot proportioning preset for basis and time-domain adjustment amount, the time-domain adjustment amount that network slot proportioning in the synchronizing signal obtained after determining the synchronously process of synchronizing signal conversion subelement 112 between each time slot is corresponding, and utilize the time-domain adjustment amount determined to adjust the synchronizing signal obtained, thus make the synchronizing signal after adjusting compared with corresponding network slot proportioning, there is less shifting to an earlier date or delayed time error, and the synchronizing signal after adjustment is sent to interference signal processing unit 12.
Particularly, for TD-SCDMA communication system, the corresponding relation between the network slot proportioning preset and time-domain adjustment amount can be, if network slot proportioning is 3: 3, the time-domain adjustment amount of its correspondence is for shifting to an earlier date A μ s; If network slot proportioning is 1: 5, the time-domain adjustment amount of its correspondence is delayed B μ s; If network slot proportioning is 2: 4, then corresponding time-domain adjustment amount is for shifting to an earlier date C μ s, and wherein, the numerical value of A, B and C can in the light of actual conditions set.
Further, described synchronizing signal adjustment subelement 113 also provides manual operation interface to the adjustment operation in the time-domain accepting outer bound pair synchronizing signal and carry out.
As shown in Fig. 1 (c), for the internal structure schematic diagram of interference signal processing unit 12, described interference signal processing unit 12 comprises interference signal and controls subelement 121, interference signal generation subelement 122, interference signal enhanson 123 and interference signal transmitting subelement 124, wherein:
Described interference signal controls subelement 121 and forms primarily of analog-digital hybrid circuit, for receiving synchronizing signal, if relate to above-mentioned synchronizing signal adjustment subelement 113 in the scheme of the embodiment of the present invention, the synchronizing signal that then interference signal control subelement 121 receives is the synchronizing signal after the adjustment of synchronizing signal adjustment subelement 113 transmission, function due to synchronizing signal adjustment subelement 113 is the preferred version of the present embodiment, therefore, if do not relate to described synchronizing signal adjustment subelement 113, the synchronizing signal that then interference signal control subelement 121 receives is the synchronizing signal that synchronizing signal conversion subelement 112 sends.
Described interference signal controls subelement 121 can determine each time slot by envelope detection technique slot time according to the described synchronizing signal received, and then according to described slot time determination descending time slot, and in each of the lower row time slot arrive time trigger interference signal generate subelement 122 generate interference signal, and trigger at the end of this descending time slot interference signal generate subelement 122 stop generate interference signal.
Particularly, described interference signal control subelement 121 can be used for the synchronizing signal after to adjustment and carries out digital-to-analogue conversion, and according to the analogue synchronization signal determination descending time slot after conversion, the signal sequence of interference signal is generated after determining descending time slot, and by the mode such as radio frequency, analog switch, trigger according to described signal sequence the generation interference signal that interference signal generates subelement 122.
In the scheme of the present embodiment, when continuous multiple time slot that interference signal control subelement 121 is determined in a subframe is descending time slot, can in each of the lower row time slot arrive time trigger interference signal generate subelement 122 generate interference signal, and at the end of this descending time slot, trigger interference signal generation subelement 122 stopping generation interference signal, and carry out same operation in adjacent next descending time slot; Preferably, also can trigger interference signal generation subelement 122 when continuous descending time slot arrival and generate interference signal, and at the end of continuous descending time slot, trigger interference signal generation subelement 122 stopping generation interference signal.If when determining that two adjacent subframe adjacent time-slots are all descending time slot according to synchronizing signal, also can trigger interference signal generation subelement 122 when the continuous descending time slot arrival belonging to adjacent sub-frame and generate interference signal, and at the end of this continuous descending time slot, trigger interference signal generation subelement 122 stopping generation interference signal.
Suppose that interference signal controls subelement 121 and determines that TS0 is descending time slot, TS1 and TS2 is ascending time slot, TS3 ~ TS6 is descending time slot according to described synchronizing signal, then interference signal control subelement 121 can trigger interference signal generation subelement 122 and generate interference signal when TS0 arrives, and at the end of TS0, trigger interference signal generation subelement 122 stopping generation interference signal; When TS3 arrives, trigger interference signal generation subelement 122 and generate interference signal, and at the end of TS6, trigger interference signal generation subelement 122 and stop generating interference signal.
Described interference signal generates subelement 122 primarily of voltage control oscillator (Voltage-controlledOscillator, VCO), phase-locked loop (Phase Locked Loop, PLL), highly stable crystal oscillator (CrystalOscillator, CO), micro-control unit (Micro Control Unit, MCU), low noise amplifier (LowNoise Amplifier, and the composition such as acquisition module (GAINBLOCK) LNA), for controlling the triggering of subelement 121 according to interference signal, generate interference signal or stop generating interference signal, described interference signal is wideband interference signal.
Described interference signal enhanson 123 is primarily of band pass filter (Band-pass Filter, BPF), (DRIVER), power amplifier (Power Amplifier is driven, the composition such as PA), the band stray in the interference signal of subelement 122 generation is generated for filtering interference signals, and strengthening described interference signal, described enhancing interference signal can be carry out amplification process to described interference signal.
Described interference signal is launched subelement 124 and is generated for launching interference signal the interference signal that subelement 122 generates, as interference signal as described in being launched by the mode of broadcast transmission.
Preferably, if interference signal is carried out band stray by interference signal enhanson 123 and strengthened, then interference signal launches the interference signal that subelement 124 exports for launching interference signal enhanson 123.
It can be the equipment such as transmitting antenna that described interference signal launches subelement 124.
Described interference signal processing unit 12 also comprises core monitoring subelement 125.
Described core monitoring subelement 125 is mainly used in the operating state monitoring and control other subelements each, as extremely determined whether subelement is in normal operating conditions by judging whether each subelement input and output have.
Such as, according to the Rule of judgment of setting, core monitoring subelement 125 can judge that interference signal launches the interference signal whether operation irregularity of subelement 124 transmitting, if the determination result is YES, then and alarm; Particularly, described Rule of judgment can be, in the ascending time slot of synchronizing signal, whether interference signal launches subelement 124 still in transmitting interference signal, if the determination result is YES, then show that interference signal launches the interference signal operation irregularity of subelement 124 transmitting, core monitoring subelement 125 can send alarm signal in time, trigger interference signal transmitting subelement 124 out of service simultaneously, avoid impacting base station.
It should be noted that, the lock unit in the embodiment of the present invention one and interference signal processing unit are also not limited to the division of other functional modules.
Embodiment two:
As shown in Figure 3, be signal interference method schematic flow sheet in the embodiment of the present invention two, said method comprising the steps of:
Step 101: signal disturbing device obtains the synchronizing signal from base station, comprises the gap information of subframe in described synchronizing signal.
Described signal disturbing implement body can obtain signal from base station by external or built-in reception antenna or GPS, and the signal got from base station is synchronously processed, specifically comprise the operation such as signal extraction and analog-to-digital conversion, obtain synchronizing signal, described synchronizing signal is digital synchronization signal.
Preferably, signal disturbing device can also according to the corresponding relation between the network slot proportioning preset and time-domain adjustment amount, determine the time-domain adjustment amount that network slot proportioning in the synchronizing signal obtained between each time slot is corresponding, and utilize the time-domain adjustment amount determined to adjust the synchronizing signal obtained, thus make the synchronizing signal after adjusting compared with corresponding network slot proportioning, there is less shifting to an earlier date or delayed time error, more meet network slot ratio requirement.
Particularly, the gap information of at least one subframe is comprised in described synchronizing signal, for TD-SCDMA communication system, in the synchronizing signal obtained, each subframe duration is 5ms, is made up of 3 special time slots (DwPTS, GP and UpPTS) and 7 regular time slots (TS0 and TS1 ~ TS6).
Step 102: signal disturbing device according to described synchronizing signal determination descending time slot, and launches interference signal in descending time slot.
Signal disturbing device can determine the slot time of each time slot by envelope detection technique according to the described synchronizing signal received, and then according to described slot time determination descending time slot, and generate when row time slot arrives in each of the lower and concurrently penetrate interference signal, and stop generating interference signal at the end of this descending time slot.
Particularly, synchronizing signal after adjustment can be carried out digital-to-analogue conversion by signal disturbing device, according to the analogue synchronization signal determination descending time slot after conversion, the signal sequence of interference signal is generated after determining descending time slot, and by the mode such as radio frequency, analog switch, generate when row time slot arrives in each of the lower according to described signal sequence and concurrently penetrate interference signal, and stop generating interference signal at the end of this descending time slot.
Step 103: signal disturbing device carries out band stray to the interference signal generated and after strengthening process, the interference signal after process launched.
Particularly, signal disturbing device is by BPF, DRIVER, PA etc., unwanted band stray and strengthen described interference signal in the interference signal that filtering generates, and the interference signal after strengthening is carried out broadcast transmission by transmitting antenna etc., realize the interference to downstream signal in specific region.
The above is only the preferred embodiments of the invention, and obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (8)
1. a signal disturbing device, is characterized in that, described signal disturbing device comprises lock unit and interference signal processing unit:
Described lock unit, for obtaining the synchronizing signal from base station, and sending to interference signal processing unit by described synchronizing signal, comprising the gap information of subframe in described synchronizing signal;
Described interference signal processing unit, for according to described synchronizing signal determination descending time slot, and launches interference signal in descending time slot;
Wherein, described lock unit comprises:
Synchronizing signal adjustment subelement, corresponding relation between the network slot proportioning preset for basis and time-domain adjustment amount, determine the time-domain adjustment amount that network slot proportioning in described synchronizing signal between each time slot is corresponding, and utilize the time-domain adjustment amount determined to adjust the synchronizing signal obtained, and the synchronizing signal after adjustment is sent to interference signal processing unit;
Described time-domain adjustment amount is the synchronizing signal after adjustment and shifting to an earlier date or delayed time error between the synchronizing signal before adjustment.
2. signal disturbing device as claimed in claim 1, it is characterized in that, described lock unit, also comprises:
Signal reception subelement, for obtaining the signal from base station, and sends to synchronizing signal to change subelement by described signal;
Synchronizing signal conversion subelement, synchronously processes for the described signal got by Signal reception subelement, obtains synchronizing signal, and described synchronizing signal is sent to interference signal processing unit.
3. the signal disturbing device as described in as arbitrary in claim 1 ~ 2, it is characterized in that, described interference signal processing unit comprises:
Interference signal controls subelement, for according to described synchronizing signal determination descending time slot, and in each of the lower row time slot arrive time trigger interference signal generate subelement generate interference signal, and trigger at the end of this descending time slot interference signal generate subelement stop generate interference signal;
Interference signal generates subelement, for controlling the triggering of subelement according to interference signal, generates interference signal or stops generating interference signal;
Interference signal launches subelement, generates the interference signal of subelement generation for launching interference signal.
4. signal disturbing device as claimed in claim 3, it is characterized in that, described interference signal processing unit also comprises:
Interference signal enhanson, generates the band stray in the interference signal of subelement generation, and strengthens described interference signal for filtering interference signals;
Described interference signal launches subelement, the interference signal after also strengthening specifically for transmitting filtering band stray.
5. a signal interference method, is characterized in that, described method comprises:
Signal disturbing device obtains the synchronizing signal from base station, comprises the gap information of subframe in described synchronizing signal;
Signal disturbing device is according to the corresponding relation between the network slot proportioning preset and time-domain adjustment amount, determine the time-domain adjustment amount that network slot proportioning in the synchronizing signal obtained between each time slot is corresponding, and utilize the time-domain adjustment amount determined to adjust the synchronizing signal obtained; Described time-domain adjustment amount is the synchronizing signal after adjustment and shifting to an earlier date or delayed time error between the synchronizing signal before adjustment;
Signal disturbing device according to described synchronizing signal determination descending time slot, and launches interference signal in descending time slot.
6. signal interference method as claimed in claim 5, is characterized in that, signal disturbing device obtains the synchronizing signal from base station, specifically comprises:
The signal got from base station synchronously processes by signal disturbing device, obtains synchronizing signal.
7. the signal interference method as described in as arbitrary in claim 5 ~ 6, it is characterized in that, signal disturbing device launches interference signal in descending time slot, is specially:
Signal disturbing device generates when row time slot arrives in each of the lower and concurrently penetrates interference signal, and stops generating interference signal at the end of this descending time slot.
8. signal interference method as claimed in claim 7, is characterized in that, signal disturbing device is before transmitting interference signal, and described method also comprises:
Band stray in the interference signal that the filtering of signal disturbing device generates, and strengthen described interference signal.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103634067A (en) * | 2013-10-24 | 2014-03-12 | 长沙宝庸通信科技有限公司 | Communication signal jammer and realization method thereof |
| CN106161314A (en) * | 2015-03-31 | 2016-11-23 | 中国移动通信集团公司 | Wireless signal interference method and device |
| GB2539465B (en) * | 2015-06-17 | 2022-02-09 | Kathrein Se | A method and system for producing a jammer signal |
| CN106257851B (en) * | 2015-06-19 | 2019-01-01 | 中国移动通信集团公司 | A kind of sending method of interference signal, device and interference unit |
| CN106330373B (en) * | 2015-07-03 | 2020-01-17 | 中国移动通信集团公司 | Synchronization method and device in interference unit and interference unit |
| CN106850120A (en) * | 2015-12-04 | 2017-06-13 | 大唐移动通信设备有限公司 | A kind of signal shielding method and equipment |
| CN106937388B (en) * | 2015-12-31 | 2022-01-25 | 上海诺基亚贝尔股份有限公司 | Method and apparatus for configuring subframe |
| CN107769886B (en) * | 2016-08-16 | 2020-02-14 | 大唐移动通信设备有限公司 | Signal interference device and method |
| CN108988980A (en) * | 2017-05-31 | 2018-12-11 | 深圳世纪天成通讯设备开发有限公司 | A kind of frequency slot transmitting management method and system |
| CN107171766A (en) * | 2017-07-21 | 2017-09-15 | 中国电子科技集团公司第二十九研究所 | A kind of LTE signal shielding methods and system based on system information |
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