CN104601252A - Anti-interference method and device for fixed wireless terminal - Google Patents

Anti-interference method and device for fixed wireless terminal Download PDF

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Publication number
CN104601252A
CN104601252A CN201310528447.1A CN201310528447A CN104601252A CN 104601252 A CN104601252 A CN 104601252A CN 201310528447 A CN201310528447 A CN 201310528447A CN 104601252 A CN104601252 A CN 104601252A
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China
Prior art keywords
wireless network
network signal
receiving terminal
receiving
power
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CN201310528447.1A
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Chinese (zh)
Inventor
刘婷
马清
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ZTE Corp
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ZTE Corp
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Priority to CN201310528447.1A priority Critical patent/CN104601252A/en
Publication of CN104601252A publication Critical patent/CN104601252A/en
Pending legal-status Critical Current

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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/38TPC being performed in particular situations
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04WWIRELESS COMMUNICATION NETWORKS
    • H04W52/00Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04TPC
    • H04W52/18TPC being performed according to specific parameters
    • H04W52/24TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/243TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account interferences

Abstract

The invention discloses an anti-interference method for a fixed wireless terminal. The method comprises the following steps that: a first receiving end receives a first wireless network signal; a second receiving end receives a second wireless network signal; the first receiving end determines that the quality of the received first wireless network signal does not meet the requirement of a threshold value, and informs the second receiving end; and the second receiving end adjusts the power of the second wireless network signal. The invention further discloses an anti-interference device for the fixed wireless terminal.

Description

A kind of fixed radio terminal anti-disturbance method and device
Technical field
The present invention relates to fixed radio terminal technology, particularly relate to a kind of fixed radio terminal anti-disturbance method and device.
Background technology
At present, fixed radio terminal, common as access case, fixed station, hand-held set, especially the fixed radio terminal of access case is similar to, because it can external PSTN (PSTN, PublicSwitched Telephone Network), away from human body, on the radiation of human body and thermal effect impact all very little, compare and get consumer reception.But, for access case series products, be placed on indoor because it is fixed usually, need to connect plug-in phone by PSTN and external telephone wire, in today that mobile device is quite popularized, plug-in phone not only reduces the satisfaction of user, and weakens popularization and the flexibility of product.
DECT (DECT, Digital Enhanced CordlessTelecommunications) in landline telephone, the form adopting wave point to connect between composite aircraft, has very large application.Existing fixed radio terminal is general and landline telephone is supporting uses in stationary applica-tions, like this, enhance the flexibility that product moves use, but because the frequency of DECT has overlapping with the frequency of wireless cellular network, in the scope of closer distance, DECT and wireless cellular network are very easy to interfere with each other, in the application process of reality, especially, when space environment is comparatively severe, the consequence of the interrupted even call drop of call is very easily caused.
In the intensive confined space, there is various wireless communication frequency and will inevitably produce mutual interference, cause a side cannot normal talking, even the problem of call drop produces, such as: DECT and scattered control system (DCS, Distribute Control System), DECT6.0 and personal communication service (PCS, PersonalCommunication Service) in global system for mobile communications (GSM, Global System for MobileCommunication), Wideband Code Division Multiple Access (WCDMA) (WCDMA, Wideband Code Division MultipleAccess) and BAND I, for GSM and DECT6.0, as shown in Figure 1, DECT6.01910-1930M, support 10 carrier frequency, carrier frequency separation 1.728MHz, each carrier frequency 24 time slots (up 12 and descending 12), exist in the critical point of frequency and influence each other, the signal received when fixed radio terminal is the up high channel CHANL8101909.8MHz signal that GSM launches, when the signal that landline telephone receives is the low frequency channel CHANEL91912.896MHz signal of DECT6.0, frequency interval is 3M, the frequency that now GSM transmits is in the Dangerous Frequency band be easily interfered, the frequency that GSM launches is that the signal of 1850MHz is in safety frequency band, although most DECT adopts frequency hopping (FHSS, Frequency-Hopping Spread Spectrum), there is certain antijamming capability, but when GSM launches with high power level, power is several times of relations of DECT, DECT must be affected, otherwise, the signal received when landline telephone is the descending low channel CHANL5121930.2MHz signal that GSM launches, when the signal that fixed radio terminal receives is the high frequency channel CHANEL01928.448MHz signal of DECT6.0, the signal that GSM launches is in the Dangerous Frequency band be easily interfered, the frequency that GSM launches is that the signal of 1990MHz is in safety frequency band.At Dangerous Frequency band, the descending low channel CHANL5121930.2MHz signal that the GSM that landline telephone receives launches is more weak, and now the power of DECT is far away higher than GSM, have impact on the sensitivity that landline telephone receives GSM signal, have impact on communication effect, can call drop time serious.
In the application of reality, there is this type of Special Handle of Drop Question, when GSM and DECT two overlaps that independently equipment is adjacent to each other, when distance close in certain scope time, such as 10cm, can produce DECT and GSM Received signal strength weak, and DECT speech range shortens, communication effect is interrupted, can not the consequence of comprehensive clear received speech signal.
Although there is serious interference, but along with the frequency range integrated level of fixed radio terminal is more and more higher, particularly along with the application of forth generation Long Term Evolution project, the fusion of fixed radio terminal and traditional landline telephone is also ready to appear, however, due to interfering with each other between DECT and wireless cellular network, namely fixed radio terminal and traditional landline telephone is allowed to be integrated in same equipment, also can because of the restriction of equipment volume, the isolation of antenna is made to be difficult to meet the requirement of design, scheme is had even if even, but be difficult to realize because of various reasons, therefore, how head it off becomes the focus instantly studied.
Summary of the invention
The present invention mainly provides a kind of fixed radio terminal anti-disturbance method and device, can effectively reduce or avoid generation that is interrupted and Special Handle of Drop Question of conversing, improve properties of product.
Technical scheme of the present invention is achieved in that
The invention provides a kind of fixed radio terminal anti-disturbance method, the method comprises:
First receiving terminal receives the first wireless network signal; Second receiving terminal receives second wireless network signal; First receiving terminal determines that the quality of the first wireless network signal received does not meet the requirement of threshold value, and notifies the second receiving terminal; The power of described second receiving terminal to described second wireless network signal adjusts.
In such scheme, described first wireless network signal and described second wireless network signal are that frequency is adjacent or have the wireless network signal of same wireless network standard.
In such scheme, the method also comprises: after described first receiving terminal receives the first wireless network signal, described first receiving terminal detects the quality of the first wireless network signal.
In such scheme, the method also comprises: described first receiving terminal is sent a notification message to described second receiving terminal by cache interface.
In such scheme, the power of described second receiving terminal to described second wireless network signal adjusts, be specially: the step-length of the notification message determination power adjustment that described second receiving terminal sends according to the first receiving terminal, adjusts according to the power of step-length to described second wireless network signal of power adjustment.
Present invention also offers the jamproof device of a kind of fixed radio terminal, this device comprises: the first receiving terminal, the second receiving terminal and cache interface; Wherein,
Described first receiving terminal, for receiving the first wireless network signal, determining that the quality of described first wireless network signal does not meet the requirement of threshold value, notifying the second receiving terminal by cache interface;
Described second receiving terminal, for receiving second wireless network signal, adjusts the power of described second wireless network signal according to the notice of the first receiving terminal;
Described cache interface, for connecting described first receiving terminal and described second receiving terminal.
In such scheme, described first wireless network signal and described second wireless network signal are that frequency is adjacent or have the wireless network signal of same wireless network standard.
In such scheme, described first receiving terminal also comprises: the first Receiver Module, detection module, arrange module and determination module; Wherein,
Described first Receiver Module, for receiving the first wireless network signal;
Described detection module, for detecting the quality of described first wireless network signal;
Described module is set, for arranging threshold value;
Described determination module, for determining that the quality of described first wireless network signal does not meet the requirement of described threshold value, and is sent a notification message to described second receiving terminal by cache interface.
In such scheme, described second receiving terminal also comprises: the second Receiver Module and main functional modules; Wherein,
Described second Receiver Module, for receiving second wireless network signal;
Described main functional modules, for receiving the notification message that described determination module sends, adjusts the power of described second wireless network signal according to described notification message.
In such scheme, described main functional modules, specifically for the step-length according to described notification message determination power adjustment, adjusts according to the power of step-length to described second wireless network signal of power adjustment.
Fixed radio terminal anti-disturbance method provided by the invention and device, be applicable to the various frequency range standards of cordless communication network, especially the wireless communication frequency band that closes on of frequency, and the first receiving terminal receives the first wireless network signal; Second receiving terminal receives second wireless network signal; First receiving terminal determines that the quality of the first wireless network signal received does not meet the requirement of threshold value, and notifies the second receiving terminal; The power of described second receiving terminal to described second wireless network signal adjusts; Like this, a side detects interference, and the opposing party then carries out power adjustment, until the quality of Received signal strength recovers normal, so, reduces interference by Modulating Power, can effectively reduce or avoid generation that is interrupted and Special Handle of Drop Question of conversing.
Accompanying drawing explanation
Fig. 1 is PCS and DECT6.0 histogram;
Fig. 2 is fixed radio terminal anti-disturbance method schematic flow sheet of the present invention;
Fig. 3 is the jamproof apparatus structure schematic diagram of fixed radio terminal of the present invention.
Embodiment
In the embodiment of the present invention, the first receiving terminal receives the first wireless network signal; Second receiving terminal receives second wireless network signal; First receiving terminal determines that the quality of the first wireless network signal received does not meet the requirement of threshold value, and notifies the second receiving terminal; The power of described second receiving terminal to described second wireless network signal adjusts; By such scheme, achieve and various wireless communication standard is unified in a fixed wireless terminal apparatus, can effectively reduce or avoid generation that is interrupted and Special Handle of Drop Question of conversing, improve properties of product.
Below by drawings and the specific embodiments, the present invention is described in further detail.
The present invention realizes a kind of fixed radio terminal anti-disturbance method, as shown in Figure 2, the first wireless network signal that described first receiving terminal receives and the second wireless network signal that described second receiving terminal receives comprise: DCS, DECT, PCS, DECT6.0, WCDMA, world standard digital cordless phone (WDCT, Worldwide Digital Cordless Telecommunication), BT(Bit Torrent) agreement and adopting wireless fidelity technology (WIFI, Wireless Fidelity) etc., the method adopted is all identical, the first wireless network signal received with the first receiving terminal is for PCS signal, the second wireless network signal that second receiving terminal receives is DECT6.0 signal is example, the method comprises the following steps:
Step 201: the first receiving terminal receives the first wireless network signal;
Concrete, described first receiving terminal receives the first wireless network signal by rf processor.
In such scheme, after described first receiving terminal receives described first wireless network signal, also comprise: the first receiving terminal detects the quality of described first wireless network signal, the process detected is realized by testing circuit, the index that first receiving terminal carries out quality testing to described first wireless network signal can be at least one item that described first wireless network signal receives index, the such as error rate (BER, Bit Error Ratio), signal strength signal intensity instruction (the RSSI received, Received Signal Strength Indication) and network reception signal quality (RXquality).
Step 202: the second receiving terminal receives second wireless network signal;
Concrete, described second receiving terminal receives second wireless network signal by rf processor.
Wherein, described first wireless network signal and described second wireless network signal are frequency vicinity or the wireless network signal with same wireless network standard.
Step 203: the first receiving terminal judges whether the quality of the first wireless network signal meets the requirement of threshold value, if not, then performs step 205, if so, then performs step 204;
Concrete, pre-set threshold value, described threshold value corresponds to the quality of described first wireless network signal, for RX quality, described RX quality is divided into 0-7 eight grades, can arrange threshold value is like this 5, corresponding class 5, and the value of the RX quality that described threshold value is corresponding is 2, it should be noted that, threshold value is the value 2 of 5 and RX quality herein, only for illustration of this method, is not construed as limiting the invention.
In this step, if the first receiving terminal detects that the RX quality value of described first wireless network signal is 1, lower than the value 2 of RX quality corresponding to described threshold value, show that the quality of described first wireless network signal does not meet the requirement of threshold value, then perform step 205; If the RX quality value described first wireless network signal being detected is 4, higher than the value 2 of RX quality corresponding to described threshold value, show that the quality of described first wireless network signal can meet the requirement of threshold value, then perform step 204.
When the index detected described first wireless network signal is BER, and/or during RSSI, the process judged the quality of described first wireless network signal is similar to the above, repeats no more herein.
In this step, the described requirement whether meeting threshold value determines according to the index detected, Ke Yishi: the finger target value of detection is the requirement meeting threshold value higher than threshold value, is the requirement not meeting threshold value lower than threshold value; Or the finger target value of detection is the requirement not meeting threshold value higher than threshold value, is the requirement meeting threshold value lower than threshold value.
Step 204: the first receiving terminal does not send a notification message to the second receiving terminal, the power of the second receiving terminal to second wireless network signal keeps, process ends;
Step 205: the first receiving terminal sends a notification message to the second receiving terminal, the power of the second receiving terminal to second wireless network signal adjusts, and the first receiving terminal continues reception first wireless network signal, performs step 203;
Concrete, when described first receiving terminal determines that the quality of the first wireless network signal does not meet described threshold value, show that the first receiving terminal now receiving PCS signal is in poor talking state, there is strong jamming, very easily cause call drop, first receiving terminal is sent a notification message to the second receiving terminal by cache interface, the step-length that the second receiving terminal receiving DECT6.0 signal adjusts according to described notification message determination power, carries out power adjustment according to the step-length of power adjustment to second wireless network signal.
Wherein, described notification message comprises power adjustment mark, as identified with a bit, 1 represents required power adjustment, like this, the step-length of described second receiving terminal determination power adjustment is default value, and the step-length adjusted according to the power of default value adjusts the power of second wireless network signal downwards;
In this step, described notification message is except comprising power adjustment mark, Testing index mark can also be comprised, as by two bit identification, 00 represents that the index detected is RX quality, and 01 represents that the index detected is BER, 11 represent that the index detected is RSSI, like this, described second receiving terminal can determine the step-length of corresponding power adjustment according to Testing index mark, the step-length adjusted according to described power adjusts the power of second wireless network signal downwards; Such as: the step-length of the power adjustment of 00 correspondence is 1dB, the step-length of the power adjustment of 01 correspondence is 2dB, and the step-length of the power adjustment of 11 correspondences is 3dB.
The power of described adjustment second wireless network signal can be realized by power control circuit, described power control circuit comprises power detection type, current detection type and voltage-controlled type, for current detection type, the step-length that second receiving terminal adjusts according to power, as according to 1dB, by current detection type power control circuit, power adjustment is carried out to second wireless network signal, detailed process is: second wireless network signal carries out after amplification process through power amplifier, microstrip line is exported to by power amplifier, after microstrip lines, power amplifier is fetched a part of second wireless network signal and is exported power control circuit to, the tributary level that a reflection power amplifier exports size is obtained after power control circuit high-frequency rectification, described tributary level and reference level are compared, described reference level is the level value that the second wireless network signal after power reduction 1dB is corresponding, the power of the second wireless network signal that power amplifier exports is controlled with this, it should be noted that, 1dB is herein just for illustration of this method, be not construed as limiting the invention.
After the second receiving terminal receiving DECT6.0 signal carries out power adjustment to described second wireless network signal, Real-time Feedback gives the first receiving terminal, first receiving terminal continues reception first wireless network signal, perform step 203, until the quality of the first wireless network signal of the first receiving terminal reception meets described threshold value requirement.
In like manner, the first wireless network signal received when the first receiving terminal is DECT6.0 signal, when the second wireless network signal that second receiving terminal receives is PCS signal, the quality of described first receiving terminal to the first wireless network signal received detects, concrete steps are similar to the above, repeat no more herein.
For realizing said method, the present invention also provides a kind of fixed radio terminal jamproof device, and this device is positioned at fixed radio terminal.Conventional fixed radio terminal connects plug-in phone by traditional wired mode, such as, connected by routine call line by PSTN interface, the fixed radio terminal of this routine needs wired connection, and, volume is large, equipment is many, connection is complicated, lack flexibility, also needs to avoid certain distance to avoid interference between different fixed radio terminals.The jamproof device of fixed radio terminal provided by the invention, interactive mode is more simple, has simplified device order of magnitude volume, has taken up room little.As shown in Figure 3, this device comprises: the first receiving terminal 31, second receiving terminal 33 and cache interface 32; Wherein,
Described first receiving terminal 31, for receiving the first wireless network signal, determining that the quality of described first wireless network signal does not meet the requirement of threshold value, notifying the second receiving terminal by cache interface;
Concrete, described first receiving terminal 31 also comprises: the first Receiver Module 311, detection module 312, arrange module 313 and determination module 314; Wherein,
Described first Receiver Module 311, for receiving the first wireless network signal;
Concrete, described first Receiver Module 311 is for receiving the first wireless network signal by rf processor.
Described detection module 312, for detecting the quality of described first wireless network signal;
Concrete, the index that described detection module 312 detects described first wireless network signal quality can be at least one item that described first wireless network signal receives index, such as BER, RSSI, RX quality.
Described module 313 is set, for arranging threshold value;
Concrete, described threshold value corresponds to the quality of described first wireless network signal.
Described determination module 314, for determining that the quality of described first wireless network signal does not meet the requirement of described threshold value, and is sent a notification message to described second receiving terminal 33 by cache interface 32;
Concrete, described determination module 314 also for determining that the quality of described first wireless network signal meets the requirement of described threshold value, does not send a notification message to the second receiving terminal 33.
Described second receiving terminal 33, for receiving second wireless network signal, adjusts the power of described second wireless network signal according to the notice of the first receiving terminal 31;
Concrete, described second receiving terminal 33 also comprises: the second Receiver Module 331 and main functional modules 332; Wherein,
Described second Receiver Module 331, for receiving second wireless network signal;
Concrete, described second radio-frequency (RF) receiving and transmission module 331 is for receiving second wireless network signal by rf processor.
Described main functional modules 332, for receiving the notification message that described determination module 314 sends, adjusts the power of described second wireless network signal according to described notification message;
Concrete, described notification message can comprise power adjustment mark and Testing index mark, like this, described main functional modules 332 can determine the step-length of corresponding power adjustment according to Testing index mark, the power of the step-length adjusted according to described power to described second wireless network signal adjusts.
Wherein, described main functional modules 332 by the power of second wireless network signal described in operation control, program control, data mart modeling, I/Q modulation and demodulation code adjustment, and can carry out real-time feedback.
It should be noted that, described first receiving terminal 31 can also comprise the modules in the second receiving terminal 33, described second receiving terminal 33 also can comprise the modules in the first receiving terminal 31, therefore, described in described first receiving terminal and 31, the second receiving terminal 33 can have same structure and function, in this case, and the detection module in the first receiving terminal and the second receiving terminal, except can being independent testing circuit, can also be included in the main functional modules of receiving terminal residing for detection module.
Described cache interface 32, for connecting described first receiving terminal 31 and described second receiving terminal 33.
Concrete, described cache interface 32 is by Serial Peripheral Interface (SPI) (SPI, Serial PeripheralInterface), universal asynchronous receiving-transmitting transmitter (UART, Universal AsynchronousReceiver/Transmitter), general purpose I/O port (GPIO, General Purpose Input/Output Ports), the mode of pulse code modulation (PCM, Pulse Code Modulation) or simulation ANALOG is to main functional modules 332 communication notification messages of the second receiving terminal 33.
It should be noted that, the quantity of described first receiving terminal in the present invention, described second receiving terminal and cache interface is for being more than or equal to 1, first receiving terminal, the second receiving terminal, the first wireless network signal, second wireless network signal just for distinguishing, are not construed as limiting the invention.
The above, be only preferred embodiment of the present invention, be not intended to limit protection scope of the present invention.

Claims (10)

1. a fixed radio terminal anti-disturbance method, is characterized in that, the method comprises:
First receiving terminal receives the first wireless network signal;
Second receiving terminal receives second wireless network signal;
First receiving terminal determines that the quality of the first wireless network signal received does not meet the requirement of threshold value, and notifies the second receiving terminal;
The power of described second receiving terminal to described second wireless network signal adjusts.
2. method according to claim 1, is characterized in that, described first wireless network signal and described second wireless network signal are that frequency is adjacent or have the wireless network signal of same wireless network standard.
3. method according to claim 1, is characterized in that, the method also comprises: after described first receiving terminal receives the first wireless network signal, described first receiving terminal detects the quality of the first wireless network signal.
4. method according to claim 1, is characterized in that, the method also comprises: described first receiving terminal is sent a notification message to described second receiving terminal by cache interface.
5. method according to claim 4, it is characterized in that, the power of described second receiving terminal to described second wireless network signal adjusts, be specially: the step-length of the notification message determination power adjustment that described second receiving terminal sends according to the first receiving terminal, adjusts according to the power of step-length to described second wireless network signal of power adjustment.
6. the jamproof device of fixed radio terminal, is characterized in that, this device comprises: the first receiving terminal, the second receiving terminal and cache interface; Wherein,
Described first receiving terminal, for receiving the first wireless network signal, determining that the quality of described first wireless network signal does not meet the requirement of threshold value, notifying the second receiving terminal by cache interface;
Described second receiving terminal, for receiving second wireless network signal, adjusts the power of described second wireless network signal according to the notice of the first receiving terminal;
Described cache interface, for connecting described first receiving terminal and described second receiving terminal.
7. device according to claim 6, is characterized in that, described first wireless network signal and described second wireless network signal are that frequency is adjacent or have the wireless network signal of same wireless network standard.
8. device according to claim 6, is characterized in that, described first receiving terminal also comprises: the first Receiver Module, detection module, arrange module and determination module; Wherein,
Described first Receiver Module, for receiving the first wireless network signal;
Described detection module, for detecting the quality of described first wireless network signal;
Described module is set, for arranging threshold value;
Described determination module, for determining that the quality of described first wireless network signal does not meet the requirement of described threshold value, and is sent a notification message to described second receiving terminal by cache interface.
9. device according to claim 6, is characterized in that, described second receiving terminal also comprises: the second Receiver Module and main functional modules; Wherein,
Described second Receiver Module, for receiving second wireless network signal;
Described main functional modules, for receiving the notification message that described determination module sends, adjusts the power of described second wireless network signal according to described notification message.
10. device according to claim 9, is characterized in that, described main functional modules, specifically for the step-length according to described notification message determination power adjustment, adjusts according to the power of step-length to described second wireless network signal of power adjustment.
CN201310528447.1A 2013-10-30 2013-10-30 Anti-interference method and device for fixed wireless terminal Pending CN104601252A (en)

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Application publication date: 20150506