CN105979537A - Wireless terminal, radio frequency interference detection method thereof and interference source determination method - Google Patents

Abstract

The invention provides a wireless terminal, a radio frequency interference detection method thereof and an interference source determination method. According to the radio frequency interference detection method, the received signal strength indicator (RSSI) and received signal quality (CQI) of wireless received signals are detected and compared with threshold values, so that whether radio frequency interference occurs can be detected. With the wireless terminal, the radio frequency interference detection method thereof and the interference source determination method adopted, reduction of additional filter circuit cost can be benefitted, radio frequency interference can be fast detected, baseband signal transmission quality can be improved, and radio frequency performance will not be affected.

Description

Wireless terminal and the detection method of Radio frequency interference, the determination method of interference source

Technical field

The present embodiments relate to wireless communication technology field, particularly relate to a kind of wireless terminal and radio frequency thereof The detection method of interference, the determination method of interference source.

Background technology

Mobile phone, or referred to as radio telephone, commonly referred to mobile phone, be a kind of communication tool, Ke Yi The portable telephone terminal used in wider range.

Mobile phone is divided into smart mobile phone (Smartphone) and non intelligent mobile phone (Featurephone), typically The performance of smart mobile phone is better than non intelligent mobile phone, but non intelligent mobile phone is than smart mobile phone stable performance. The dominant frequency of smart mobile phone is higher, and the speed of service is fast, and processing routine task is more rapid, daily enhanced convenience； Rather than the dominant frequency of smart mobile phone then ratio is relatively low, the speed of service is the most slow.

Smart mobile phone (Smartphone), refers to as PC, has independent operating system, Great majority are large-size screen monitors machines, and are to touch capacitance plate, and also having part is touch screens, powerful practicality High.The program that the third party service providers such as including game provides can be installed voluntarily, by this class by user Sequence constantly is expanded the function of mobile phone, it is possible to realize wireless network by mobile communication network Access.Succeeding in reaching an agreement custom is exactly a bit " palm PC+mobile phone=smart mobile phone ".In a broad sense, intelligence hands Machine, in addition to the call function possessing mobile phone, has been also equipped with most of function of PDA, particularly individual's letter Cease management and browser based on RFDC and e-mail function.Smart mobile phone is that user carries Supply enough screen sizes and bandwidth, the most handy to carry about, carry for running software and content service again Supply wide stage.A lot of value-added services can launch with regard to this, such as: stock, news, weather, friendship Logical, commodity, application program are downloaded, music picture download etc..

Distinguishing from communication system standard, mobile phone is divided into 1G, 2G, 3G, 4G and next-generation mobile phone.

1G mobile phone refers to the mobile phone of simulation, and this mobile phone has multiple types, such as NMT, AMPS, TACS, but substantially use frequency division multiplexing mode can only carry out voice communication, and reception effect is unstable, And confidentiality is not enough, wireless bandwidth utilizes insufficient.

2G mobile phone is also modal mobile phone, uses these the most ripe standards of GSM or CDMA, There is stable speech quality and suitable stand-by time.

3G mobile refers to use the mobile phone of G mobile communication, relative first generation analog system mobile phone (1G) and second filial generation digital mobile phone (2G), third generation mobile phone generally speaking, refer to by radio communication with The third generation mobile communication system that the multimedia communications such as Internet combine.It can process image, sound The media forms such as pleasure, video flowing, it is provided that include that web page browsing, videoconference, ecommerce etc. are many Plant information service.3G mobile (3Ghandsets) has 3 kinds of standards in the world: the WCDMA in Europe Standard, the CDMA2000 standard of the U.S. and the TD-SCDMA standard proposed by Chinese Scientists.

4G cell phone refers to use forth generation mobile communication and the mobile phone of technology thereof, it is possible to transmission high-quality video Image and image transmitting quality and the equal technical products of high-definition television, the standard bag of use Include LTE.

5G mobile phone refers to use the 5th generation and next generation mobile communication and the mobile phone of technology thereof.

In recent years, mobile communication technology has obtained swift and violent development, and development prospect is the most wide.But along with Mobile subscriber increases rapidly, and new technique is continuously available application, and cellular mobile communication is developed by frequency resource Restriction increasing, radio frequency resource day is becoming tight, and various potential interferences constantly produce.Disturb into and be limited Making and affect the key factor of mobile communication system capacity and quality, the Radio frequency interference of mobile communications network is asked Topic generally exists and must solve.Therefore, it is necessary to different interference is analyzed, find row Effective method reduces interference.

Radio frequency (RF, RadioFrequency) signal, for being radiated the electromagnetic frequency in space, frequently Rate scope is generally between 300KHz～30GHz.RF interference is exactly Radio frequency interference, according to mobile communication The feature of signal, can divide its suffered interference according to following several method.

Divide according to frequency range: uplink interference and descending interference.

Uplink interference is defined as disturbing signal line frequency section over the mobile network, and extraneous radio frequency interference source is to base station The interference produced.Uplink interference can cause the reduction of base station range.Mobile phone is at the bar without uplink interference Under part, base station is able to receive that remotely mobile phone signal, and when uplink interference occurs, mobile phone signal need to be better than Interference signal, could get in touch with base station, therefore, mobile phone must from base station closer to.

Descending interference refers to that the dry signal of disturbing of interference source receives dry at mobile network's band downlink, mobile phone Disturb signal, it is impossible to distinguish normal Base Station signal, make the contact of mobile phone and base station interrupt, cause call drop or cannot Registration.

Divide according to frequency: co-channel interference, non-co-channel interference.

Co-channel interference refers to all garbage signals identical with useful signal frequency that be that fall in receiver pass-band Interference, also known as cochannel interference.These garbage signals are the same with useful signal, in receivers through putting Greatly, frequency conversion and fall in IF passband, as long as therefore there is co-channel interference at receiver inlet, receive System just cannot filter and suppress it.

Non-co-channel interference mainly includes adjacent frequency interference, Intermodulation Interference, obstruction interference, clutter interference.

Adjacent frequency interference refers to the signal disturbing from used signal frequency side frequency.Adjacent frequency interference be due to Receiving filter is undesirable so that cause in the signals leakiness of side frequency has arrived transmission bandwidth.Adjacent Frequency interference can be distributed by accurate filtering and channel and be reduced as far as possible.

Near-far interference: if the base station of adjacent channel is launched in the scope close from receiver user, and Receiver uses the base station signal of preset channel, and this problem will become very serious, and this is referred to as distance effect Should.When the channel of the mobile station use close from base station and the channel of a weak signal mobile station use are phase During side channel, near-far interference also can occur.In the umts system, use same due to all of mobile station One frequency band, near-far interference impact becomes apparent from, but UMTS system uses good power to control to eliminate The impact of near-far interference.

Intermodulation Interference, when two or more different frequency signals acts on a nonlinear circuit, will adjust mutually System produces the output of new frequency signal, if this frequency just falls in operation of receiver channel width, then structure The interference of this receiver, becomes Intermodulation Interference in pairs.Intermodulation Interference is probably external signal and launches signal Mixing produces；Being also possible to be entirely two external signals produce, they are simply by the non-thread of receiver Property device is mutually mixed；Sometimes, the cradle producing inter-modulated signal is not merely receiver, non-linear Binding site be likely to be near the roof that gets rusty or enclosure wall, when there being high-power radio signal to transmit, This physical arrangement, just as a nonlinear device, forms Intermodulation Interference, and this intermodulation effects Can change with weather condition.

Blocking interference, any receiver has certain reception dynamic range, when frequency out-of-band interference signal is strong To a certain extent, when receiving the maximal power level that power exceedes reception dynamically permission, receiver can be caused Saturation jamming, thus affect the receptivity of system, this kind of interference is referred to as blocking interference.Obstruction can cause Receiver cannot normally work, and blocks the permanent hydraulic performance decline that may also result in receiver for a long time.

Clutter interference, due to the roll-off characteristic of emission filter, any wave filter is impossible to be preferable Step-like manner, causes always there is certain out-of-band radiation, here it is commonly called transmitting is spuious, due to The interference launching spuious generation is referred to as clutter interference.

In mobile communication system, reduce the important content that interference is network planning and optimization, but Also it is an extremely complex problem.

Every instrument being analyzed radio frequency can test interference, and general test instrumentation is Audiofrequency spectrometer, field intensity indicator, test receiver etc..

Current smart mobile phone integrated level is more and more higher, and processing speed is faster, to complete machine Electro Magnetic Compatibility (EMC, ElectroMagneticCompatibility) performance brings the biggest challenge.Hands HW High Way in mainboard, the circuit such as Switching Power Supply produce work when substantial amounts of noise and Higher hamonic wave, if falling in the reception frequency range of radio frequency, brings certain will to the radio-frequency performance of mobile phone Reduce.

For mobile phone products, a critically important content detects various possibility affect radio-frequency performance Interference source, and interference is processed accordingly so that will not be done the when of the work of mobile phone wireless module Disturb.Common scheme is that various interference sources are added filter circuit, and reducing may be on radio frequency band impact Interference source amplitude.And this can exist the problem of several respects, the filter circuit first added can be to signal itself Signal integrity produce impact, and too increase the cost of hardware.Secondly as being done of radio frequency Scrambling section includes 2G, 3G, 4G and wireless connections etc., and interference source can include USB transmission line, display Screen and the data/address bus of touch screen, memory element high speed data lines and DC-dc conversion (DC-DC) The various combinations of power line etc., interference source and disturbed person are a lot, need to take one thing with another, and have Interference source may receive structure and limit and cannot eliminate.

Therefore, it is necessary to a kind of method designing detection source of radio-frequency interference more efficiently.

Summary of the invention

The purpose of the embodiment of the present invention be to provide a kind of wireless terminal and the detection method of Radio frequency interference thereof, The determination method of interference source is high in order to solve cost in prior art, it is impossible to detection wireless terminal is penetrated automatically The problem of frequency interference.

The technical scheme that the embodiment of the present invention uses is as follows:

One embodiment of the invention provides a kind of wireless terminal, including: modem, processor, penetrate Frequency module and memorizer, wherein,

Described modem, wireless reception of signals during for detecting the work of described radio-frequency module RSSI value and CQI value, and it is sent to described processor；

Described processor, for judging RSSI value and the storage of described memorizer of described current detection Oneth RSSI threshold value, the magnitude relationship of the 2nd RSSI threshold value, the CQI value of described current detection with Oneth CQI threshold value of described memorizer storage, the magnitude relationship of the 2nd CQI threshold value, wherein, institute Stating a RSSI threshold value and be more than or equal to described 2nd RSSI threshold value, a described CQI threshold value is big In or equal to described 2nd CQI threshold value；And determine whether to occur radio frequency to do according to the magnitude relationship judged Disturb.

If it is also preferred that the left the RSSI value of described current detection is more than or equal to a described RSSI threshold value, And the CQI value of described current detection is more than or equal to a described CQI threshold value, described processor is also For determining that the Radio frequency interference of described radio-frequency module is less than the first interference threshold, so that it is determined that penetrate Frequency interference.

If it is also preferred that the left the RSSI value of described current detection is less than described 2nd RSSI threshold value, and institute The CQI value stating current detection is less than described 2nd CQI threshold value, and described processor is additionally operable to determine institute The Radio frequency interference stating radio-frequency module is more than the second interference threshold, so that it is determined that there is Radio frequency interference.

If it is also preferred that the left the RSSI value of described current detection is more than or equal to a described RSSI threshold value, And the CQI value of described current detection is less than described 2nd CQI threshold value, described processor is additionally operable to really The signal packet that the antenna of fixed described radio-frequency module receives is containing interference signal.

It is also preferred that the left described processor be additionally operable to be respectively compared the RSSI value of current detection and CQI value with The RSSI value of detection last time of described memorizer storage and the size of CQI value, according to current detection RSSI value reduces and/or interference source is oriented in the CQI value reduction of current detection.

It is also preferred that the left described processor is additionally operable to, according to the interference source oriented, change described interference source Running parameter is to reduce Radio frequency interference.

Another embodiment of the present invention also provides for the detection method of the Radio frequency interference of a kind of wireless terminal, described Wireless terminal includes: modem, processor, radio-frequency module and memorizer, wherein, and described method Including:

Described modem detects the RSSI value of wireless reception of signals when described radio-frequency module works And CQI value, and it is sent to described processor；

Described processor judges RSSI value and the first of the described memorizer storage of described current detection RSSI threshold value, the magnitude relationship of the 2nd RSSI threshold value, the CQI value of described current detection is deposited with described Oneth CQI threshold value of reservoir storage, the magnitude relationship of the 2nd CQI threshold value, wherein, described first RSSI threshold value is more than or equal to described 2nd RSSI threshold value, and a described CQI threshold value is more than or equal to Described 2nd CQI threshold value；And determine whether Radio frequency interference according to the magnitude relationship judged.

Determine whether to occur Radio frequency interference to specifically include it is also preferred that the left described according to the magnitude relationship judged:

If the RSSI value of described current detection is more than or equal to a described RSSI threshold value, and described The CQI value of current detection is more than or equal to a described CQI threshold value, and described processor determines described The Radio frequency interference of radio-frequency module is less than the first interference threshold, so that it is determined that there is not Radio frequency interference.

Determine whether to occur Radio frequency interference to specifically include it is also preferred that the left described according to the magnitude relationship judged:

If the RSSI value of described current detection is less than described 2nd RSSI threshold value, and described current inspection The CQI value surveyed is less than described 2nd CQI threshold value, and described processor determines penetrating of described radio-frequency module Frequency interference is more than the second interference threshold, so that it is determined that there is Radio frequency interference.

Determine whether to occur Radio frequency interference to specifically include it is also preferred that the left described according to the magnitude relationship judged:

If the RSSI value of described current detection is more than or equal to a described RSSI threshold value, and described The CQI value of current detection is less than described 2nd CQI threshold value, and described processor determines described radio frequency mould The signal packet that the antenna of block receives is containing interference signal.

The another embodiment of the present invention also provides for the determination method of the source of radio-frequency interference of a kind of wireless terminal, Described wireless terminal includes: modem, processor, radio-frequency module and memorizer, wherein, described Method includes:

Described modem detects the RSSI value of wireless reception of signals when described radio-frequency module works And CQI value, and it is sent to described memorizer；

The RSSI value of described memorizer storage current detection and CQI value；

Described processor is respectively compared the RSSI value of current detection and CQI value and stores with described memorizer The RSSI value of detection last time and the size of CQI value, reduce according to the RSSI value of current detection and/ Or current detection CQI value reduce orient interference source.

The technical scheme of the embodiment of the present invention has the advantage that contributing to reducing extra filter circuit becomes This, fast automatic detecting Radio frequency interference, improving base band signal transmission quality simultaneously also will not be to radio frequency Can impact.

Accompanying drawing explanation

In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, below will be to reality Execute the required accompanying drawing used in example or description of the prior art to be briefly described, it should be apparent that under, Accompanying drawing during face describes is some embodiments of the present invention, for those of ordinary skill in the art, On the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.

Fig. 1 is the structural representation of a kind of wireless terminal of one embodiment of the invention；

Fig. 2 is that a kind of method flow detecting wireless terminal Radio frequency interference of another embodiment of the present invention shows It is intended to；

Fig. 3 is a kind of method flow detecting wireless terminal Radio frequency interference of still another embodiment of the present invention Schematic diagram；

Fig. 4 is a kind of method flow determining wireless terminal source of radio-frequency interference of another embodiment of the present invention Schematic diagram；

Fig. 5 is that a kind of method flow reducing wireless terminal Radio frequency interference of another embodiment of the present invention shows It is intended to.

Detailed description of the invention

For making the purpose of the embodiment of the present invention, technical scheme and advantage clearer, below in conjunction with this Accompanying drawing in bright embodiment, is clearly and completely described the technical scheme in the embodiment of the present invention, Obviously, described embodiment is a part of embodiment of the present invention rather than whole embodiments.Based on Embodiment in the present invention, those of ordinary skill in the art are obtained under not making creative work premise The every other embodiment obtained, broadly falls into the scope of protection of the invention.

Term " assembly ", " module ", " unit ", " system " etc. are intended to refer to as used in this article Show computer related entity, whether hardware, firmware, hardware and the combination of software, software, or Executory software.Such as, assembly may be, but not limited to, be run on a processor process, Integrated circuit, object, can executive item, the thread of execution, program and/or computer, as explaining orally, The application run on the computing device and this calculating equipment can be all assemblies.One or more groups Part can reside in process or/or the thread that performs, and assembly can be partially and totally at a meter On calculation machine and/or be distributed between two or multiple stage computer.Additionally, these assemblies can be deposited from it The various computer-readable mediums storing up various data structure perform.These assemblies can be by means of this Ground and/or remote process communicate, such as according to having the signal of one or more packet (such as, From the data of an assembly, wherein this assembly is just by means of this signal and local system, distributed system System and/or network across such as the Internet etc. and another component interaction in other communication systems) come Make this communication.

Additionally, various aspect described herein or feature can use standard program and/or engineering Technical term is used for implementation method, device or manufactured goods.Term " manufactured goods " as used in this article Being intended to can be from the readable computer program of any computer readable device, carrier or medium.Example As, computer-readable medium can include but not limited to magnetic storage apparatus (such as, hard disk, floppy disk, Magnetic stripe ...), CD (such as, compact disk (CD), digital versatile disc (DVD) ...), Smart card and flash memory device (such as, memory card, memory stick, USB flash disk ...).

The techniques described herein may be used in various communication system, such as 2G, 3G, 4G communication system And next generation communication system, such as global mobile communication (GSM, Global System for Mobile Communication) system, CDMA (CDMA, Code Division Multiple Access) System, time division multiple acess (TDMA, Time Division Multiple Access) system, broadband code Divide multiple access (WCDMA, Wideband Code Division Multiple Access) system, frequency division Multiple access (FDMA, Frequency Division Multiple Access) system, OFDM (OFDMA, Orthogonal Frequency-Division Multiple Access) system, single carrier FDMA (SC-FDMA) system, GPRS (general packet radio service) (GPRS, General Packet Radio Service) system, Long Term Evolution (LTE, Long Term Evolution) system, and other This type of communication system.

Herein in connection with subscriber equipment and/or base station and/or base station controller, various aspect is described.

Subscriber equipment, can be wireless terminal can also be catv terminal, wireless terminal may be to User provides the equipment of voice and/or data connectivity, have wireless connecting function portable equipment, Or it is connected to other processing equipments of radio modem.Wireless terminal can be through wireless access network (such as, RAN, Radio Access Network) communicates with one or more core net, nothing Line terminal can be mobile terminal, such as mobile phone (or be referred to as " honeycomb " phone) with have mobile end End computer, for example, it may be portable, pocket, hand-held, built-in computer or Vehicle-mounted mobile device, they and wireless access network exchange language and/or data.Such as, personal communication Business (PCS, Personal Communication Service) phone, wireless phone, session setup Agreement (SIP) phone, WLL (WLL, Wireless Local Loop) are stood, individual The equipment such as digital assistants (PDA, Personal Digital Assistant).Wireless terminal can also claim For system, subscri er unit (Subscriber Unit), subscriber station (Subscriber Station), move Dynamic station (Mobile Station), mobile station (Mobile), distant station (Remote Station), Access point (Access Point), remote terminal (Remote Terminal), access terminal (Access Terminal), user terminal (User Terminal), user agent (User Agent), user Equipment (User Device) or subscriber's installation (User Equipment).

Base station (such as, access point) may refer in access network aloft on interface by one or many Individual sector and the equipment of wireless terminal communications.Base station can be used for being grouped the air frame received and IP into Row mutually conversion, as the router between wireless terminal and the remainder of access network, wherein accesses The remainder of net can include Internet protocol (IP) network.The base station also tunable genus to air interface Property management.Such as, base station can be base station (BTS, the Base Transceiver in GSM or CDMA Station), it is also possible to be the base station (NodeB) in WCDMA, it is also possible to be in LTE Evolved base station (evolved Node B), the application does not limit.

Term " system " and " network " are the most often used interchangeably.

It addition, the terms "and/or", a kind of incidence relation describing affiliated partner, table Show and can there are three kinds of relations, such as, A and/or B, can represent: individualism A, deposit simultaneously In A and B, individualism B these three situation.It addition, character "/" herein, typically represent The forward-backward correlation relation to liking a kind of "or".

As it is shown in figure 1, be the structural representation of a kind of wireless terminal of one embodiment of the invention, this area Skilled artisan will realize that can be via software, hardware (such as, general processor, numeral letter Number processor (DSP, DigitalSignalProcessor) chip, special IC (ASIC, ApplicationSpecificIntegratedCircuit), field programmable gate array (FPGA, FieldProgrammableGateArray) etc.), firmware or a combination thereof are implemented for providing described The process of the confirmation signaling of wireless terminal.Describe for performing this of described function below with reference to Fig. 1 Class example hardware.

Should be understood that each side described herein can by hardware (hardware), software (software), Firmware (firmware), middleware (middleware), microcode (microcode) or its What combination realizes.When these systems and/or method are in software, firmware, middleware or microcode, program When realizing in code or code segment, the machine readable that he can not be stored in such as storage assembly etc is situated between In matter.Code segment can represent code (procedure), function (function), program, son Program, routine (rountine), subroutine, module, unit, software kit, class (class), or It is instruction, data structure or any combination of program statement ().By transmission and/or receive information, Data, independent variable (arguments), parameter or memory content etc., a code segment can be coupled To another code segment or hardware circuit.Information, independent variable, parameter or data etc. can use and include depositing Any suitable means such as reservoir is shared, message transmission, alternative space, network transmission are passed, turn Send out or transmission.

Fig. 1 illustrates the example hardware that can be used to implement the various embodiment of the application.Wireless terminal 100 include bus 101 or for other communication mechanism of information communication and be coupled to bus 101 For processing the processor 103 of information.Wireless terminal 100 also includes being coupled to bus 101 for depositing Store up the main storage 105 of the multidate information performed by processor 103 and dynamic instruction, the most at random Access memorizer (RAM) or other dynamic memory.Main storage 105 can be used for Processor 103 stores temporary variable or other average information during performing instruction.Wireless terminal 100 is also Can include being coupled to bus 101 for storing the static information for processor 103 and static instruction Read only memory (ROM) 107 or other static storage device.Storage device 109, such as Disk or CD, be coupled to bus 101 for being persistently stored information and instruction.

Wireless terminal 100 can also include the radio frequency mould being coupled to bus 101 for launching radiofrequency signal Block 104, is the functional module receiving, send and process high frequency radio wave, and radio-frequency module 104 wraps Include data transmission module and data reception module.On the whole, the key element in radio-frequency module is main Including RF transceiver (Transceiver), power amplifier (PA), antenna switch module (ASM), Front-end module (FEM), duplexer, RFSAW wave filter and synthesizer etc..Such as 3G mobile Radio-frequency module is sent two parts by radio frequency reception and radio frequency and forms, and its main circuit includes antenna, wireless Switch, accept filter, frequency synthesizer, High frequency amplification, reception local oscillator, mixing, intermediate frequency, transmitting The control of local oscillator, power amplifier, power amplifier etc..

Transceiver is the core processing unit of radio-frequency module, mainly includes receiver unit and transmitter unit, Receiver unit completes the amplification of the docking collection of letters number, and filtering and down coversion finally export baseband signal.Generally The mode using zero intermediate frequency and numeral Low Medium Frequency realizes the radio frequency conversion to base band；Transmitter unit completes right The up-conversion of baseband signal, filter, amplify.

Power amplifier (PA) amplifies for the radiofrequency signal exported by transceiver, and power amplifier is Element that cannot be integrated in wireless terminal, this is also most important element, nothing in wireless terminal simultaneously Line terminal capabilities, footprints, speech quality, signal intensity, battery durable ability are all put by power Big device determines.

Front-end module is integrated with switch and radio-frequency filter, completes the switching, frequently that antenna receives and launches Section selects, receives and launch the filtering of radiofrequency signal.

Wireless terminal 100 can also include that the modem 102 being coupled to bus 101 is for by each Plant digital baseband signal and be converted into digital modulation signals (modulated signal or the frequency band letter being suitable to transmission Number), at receiving terminal, the digital band signals revivification received is become digital baseband signal.The purpose of modulation Being that analogue signal to be transmitted or digital signal conversion are become to be suitable for the signal of transmission, this just means And baseband signal (information source) is changed into the band communication that frequency for a relative baseband frequency is the highest Number, this signal is referred to as modulated signal, and baseband signal is referred to as modulated signal.Modulation can be by making height Frequently carrier wave changes the amplitude of carrier wave, phase place or frequency and realizes with the change of signal amplitude.Modulation Process is made a start for communication system.At receiving terminal, modulated signal need to be reduced into original letter to be transmitted Number, namely baseband signal is extracted from carrier wave so that predetermined receiver (stay of two nights) processes With the process understood, this process is referred to as demodulation.

Wireless terminal 100 can be coupled to the display for displaying to the user that information via bus 101 111, such as liquid crystal display or Active Matrix Display.Input equipment 113, such as, include word The keyboard of key, numeral keys and other key, is alternatively coupled to bus 101 for by information and command selection It is transferred to processor 103.Input equipment 113 can include for direct information and command selection being passed It is passed to processor 103 and for controlling the cursor control that the cursor on display 111 moves, such as Mouse, tracking ball (trackball) or cursor direction key.

According to the various embodiments of the application, wireless terminal 100 can perform in response to processor 103 The process providing described is arranged in the instruction that main storage 105 includes.Such instruction can be from Another computer-readable medium, such as storage device 109, read in main storage 105.To master The execution that the instruction comprised in memorizer 105 is arranged makes processor 103 carry out process step described herein Suddenly.One or more processors during multiprocessing is arranged may also be used for performing to wrap in main storage 105 The instruction contained.In an alternative embodiment, hard-wired circuitry can replace or combine software instruction in fact Execute the various embodiments of the application.In another example, it is possible to use reconfigurable hardware, example Such as field programmable gate array (FPGA), the wherein function of its gate and connection topological structure Can at runtime, generally by memory look-up tables being programmed to customization.Therefore, the application Embodiment be not limited to any concrete combination of hardware circuit and software.

Wireless terminal 100 also includes at least one communication interface 115 being coupled to bus 101.Communication Interface 115 provides and couples with the bidirectional data communication of network link (not shown).Communication interface 115 Sending and receive the signal of telecommunication, electromagnetic signal or optical signalling, these signaling bearers represent various information Data stream.It addition, communication interface 115 can include that peripheral interface equipment, such as general serial are total Line (USB) interface, PCMCIA (PCMCIA (personal computer memory card international association)) interface etc..

Processor 103 can process the transmission code simultaneously received and/or code is stored in storage For performing later in equipment 109 or other nonvolatile memory.In this way, wireless end End 100 can be to comprise the form application code as carrier wave.

Above-mentioned disclosed term " computer-readable medium " refers to that participation provides instructions to processor 103 Carry out any medium processed.This medium can take various forms, and includes but not limited to non-volatile Storage medium, volatile storage medium and transmission medium.Non-volatile memory medium, it may for example comprise CD or disk, such as storage device 109；Volatile storage medium includes dynamic memory, example Such as main storage 105.Transmission medium include coaxial cable, copper cash and optical fiber (such as, including wiring, This wiring includes bus 101).Transmission medium can also use the shape of sound wave, light wave or electromagnetic wave Formula, those ripples such as generated at radio frequency (RF) and infrared ray (IR) data communication.Computer can Read the common form of medium, such as, include that floppy disk, flexible disk, hard disk, tape, other magnetic any are situated between Matter, CD-ROM, CDRW, DVD, other optical medium any, punch card, paper tape, optics Badge card, any other physical medium with sectional hole patterns or the discernible mark of other optics, random Access memorizer (RAM, RandomAccessMemory), PROM and EPROM, FLASH-EPROM, other storage chip any or storage box, carrier wave or computer can read Other medium any.

When providing instructions to processor to process, various forms of computer-readable can be related to and be situated between Matter.Such as, it is used for realizing at least one of instruction of the application and can initially be carried on remote computation On the disk of machine.If realized using the form of SFU software functional unit and as independent production marketing or make Used time, can be stored in a computer read/write memory medium.Based on such understanding, this Shen The part that prior art is contributed by technical scheme please the most in other words can be with software product Form embody, this computer software product is stored in a storage medium, including some fingers Order is with so that a computer equipment (can be personal computer, server, or the network equipment Deng) perform all or part of step of method described in each embodiment of the application.

Under this scene, instruction is loaded in main storage and uses modulation /demodulation by remote computer Device sends instruction by telephone wire.The modem of native system receives the data on telephone wire and makes Carry out signal conversion with transmitter, such as, use infrared transmitter to convert the data into infrared signal, Or use Bluetooth transmission device to convert the data into bluetooth line signal, and the signal after conversion is transferred to Portable computing device, such as portable digital-assistant (PDA) or notebook computer.Portable meter Detector (such as infrared detector, bluetooth detector) on calculation equipment receives the information of signaling bearer With instruction and data are placed in bus.Bus transfers data to main storage, and processor is from this Primary memory retrieval and perform instruction.The instruction received by main storage can performed by processor Before or after optionally stored in storage device.

When described radio-frequency module 104 works, described modem 102 is used at any time or periodicity The signal quality of detection wireless reception of signals and signal intensity, as switching base station or closed power Control foundation, the parameter of detection include received signal strength indicator (RSSI, ReceivedSignalStrengthIndication) value and received signal quality instruction (CQI) value.

RSSI value represents the intensity that reception signal is total, produces after backward channel Baseband Receiver filters, In 104 μ s (microsecond), carry out baseband I/Q branch power integration obtain the instantaneous value of RSSI, and In 1s (second), instantaneous value is averaged and obtains the meansigma methods of RSSI, check that the meansigma methods of RSSI is Judge that the important means of interference, unloaded lower RSSI value, typically at about-110dBm, exist in business In the case of, RSSI meansigma methods is typically not over-95dBm, if it find that RSSI value has significantly Raise, be greater than certain threshold value, then be to there is return link interferences certainly.

For cdma system, the return link interferences impact when user accesses clearly, Due to the decline of reverse link circuit quality, wireless terminal access base station process compared with normal situation can seem more " very long " even causes high access failure, and it is wireless that reason is that normal forward link quality can allow Terminal open loop power control uses relatively low power emission access exploration, and owing to return link interferences causes base Subsystem (BSS) of standing can not normally demodulate access channel message, and wireless terminal will be with PowerStep Step-length is stepped up access exploration power, and this allows for access procedure and is extended much even to cause and connects Enter failure.So, judging return link interferences when, jointly analyze in conjunction with access index Can pinpoint the problems faster.

Abnormal point of three kinds of situations of RSSI value, are too low (i.e. RSSI value is less than certain threshold value), mistake respectively High (i.e. RSSI value is more than certain threshold value), main classification difference excessive (more than certain threshold value) etc., often The RSSI abnormal cause that causes seen has: qualitative problems of construction, external interference, parameter arrange mistake, Equipment fault and terminal problem etc..

Channel quality instruction (CQI) is the measurement standard of the communication quality of wireless channel, represents useful The scale that signal accounts for.CQI can be the channel measurement standard what is called one representing a given channel Individual value (or multiple value).Generally, the CQI of a high level (more than certain threshold value) represents one Channel has high quality, and vice versa.The CQI of one channel can be passed through property data, Such as, signal to noise ratio (SNR), Signal to Interference plus Noise Ratio (SINR), signal and noise distortion Than channels such as (SNDR) performance Index Calculation out.These values can be for one with other The channel measurement given and the CQI being then used for calculating channel.The CQI of one given channel relies on In transmission (modulation) scheme used by communication system.Such as, an employing code division multiple access (CDMA) Communication system a different CQI rather than one can be utilized to use OFDM (OFDM) communication system.In the communication system of more complexity, such as, those use multi input Multi output (MIMO) and the system of space time code, the use of CQI also relies on receptor Type.Other is it can be considered that the factor of CQI is performance damage.Such as, Doppler's conversion, channel Estimate error, interference etc..

Described modem 102 is for by the RSSI value of described current detection and described current detection CQI value be sent to described processor 103, described processor 103 is used for judging described current detection RSSI value and a RSSI threshold value, the magnitude relationship of the 2nd RSSI threshold value, described current detection CQI value and a CQI threshold value, the magnitude relationship of the 2nd CQI threshold value.Wherein, described first RSSI threshold value can be more than or equal to described 2nd RSSI threshold value, a described CQI threshold value more than or Equal to described 2nd CQI threshold value.A described RSSI threshold value, the 2nd RSSI threshold value, a CQI Threshold value, the 2nd CQI threshold value are stored in described main storage 105 or storage device 109.

If a described RSSI threshold value is equal to described 2nd RSSI threshold value, a CQI threshold When value is equal to described 2nd CQI threshold value, described processor 103 determines described radio frequency according to judged result Whether module 104 there is Radio frequency interference, described in detail below.

If described processor 103 determines that the RSSI value of described current detection is more than or equal to described the One RSSI threshold value, and determine that the CQI value of described current detection is more than or equal to a described CQI threshold Value, described processor 103 is additionally operable to determine the radio frequency of the described radio-frequency module 104 of described wireless terminal Interference less than the first interference threshold, be i.e. operated in one good in the environment of, there is not Radio frequency interference.

If described processor 103 determines that the RSSI value of described current detection is less than described 2nd RSSI Threshold value, and determine that the CQI value of described current detection is less than described 2nd CQI threshold value, described process Device 103 is additionally operable to the Radio frequency interference determining the described radio-frequency module 104 of described wireless terminal more than first Interference threshold, i.e. illustrates that the current wireless signal of described radio-frequency module 104 is more weak, Radio frequency interference occurs, It is probably the current position of mobile phone to be shielded or away from reasons such as base stations.

If described processor 103 determines that the RSSI value of described current detection is more than or equal to described the One RSSI threshold value, and determine that the CQI value of described current detection is less than described 2nd CQI threshold value, institute State the letter of the signal that processor 103 is additionally operable to determine that the antenna of radio-frequency module 104 of wireless terminal receives Number intensity meets requirement, but signal packet is containing interference signal, causes the noise of entirety to be elevated and have impact on CQI。

If a described RSSI threshold value is more than described 2nd RSSI threshold value, a CQI threshold When value is more than described 2nd CQI threshold value, described processor 103 is possible not only to determine according to judged result Whether described radio-frequency module 104 there is Radio frequency interference, it is also possible to judge to occur the serious journey of Radio frequency interference Degree, described in detail below.

If described processor 103 determines that the RSSI value of described current detection is more than or equal to described the One RSSI threshold value, and determine that the CQI value of described current detection is more than or equal to a described CQI threshold Value, described processor 103 is additionally operable to determine the radio frequency of the described radio-frequency module 104 of described wireless terminal Interference less than the first interference threshold, be i.e. operated in one good in the environment of, there is not Radio frequency interference.

If described processor 103 determines that the RSSI value of described current detection is less than described 2nd RSSI Threshold value, and determine that the CQI value of described current detection is less than described 2nd CQI threshold value, described process Device 103 is additionally operable to the Radio frequency interference determining the described radio-frequency module 104 of described wireless terminal more than second Interference threshold, wherein, it is described that described second interference threshold is more than described first interference threshold, i.e. explanation The current wireless signal of radio-frequency module 104 is more weak, substantial radio frequency interference occurs, it may be possible to mobile phone is current Position shielded or away from reasons such as base stations.

If described processor 103 determines that the RSSI value of described current detection is more than described 2nd RSSI Threshold value but less than a described RSSI threshold value, and determine that the CQI value of described current detection is more than described 2nd CQI threshold value but less than a described CQI threshold value, described processor 103 is additionally operable to determine institute The Radio frequency interference of the described radio-frequency module 104 stating wireless terminal more than described first interference threshold but is less than Described second interference threshold, wherein, described second interference threshold is more than described first interference threshold, i.e. Illustrate that the current wireless signal of described radio-frequency module 104 is general, general Radio frequency interference occurs.

If described processor 103 determines that the RSSI value of described current detection is more than or equal to described the One RSSI threshold value, and determine that the CQI value of described current detection is less than described 2nd CQI threshold value, institute State the letter of the signal that processor 103 is additionally operable to determine that the antenna of radio-frequency module 104 of wireless terminal receives Number intensity meets requirement, but signal packet is containing interference signal, causes the noise of entirety to be elevated and have impact on CQI。

For finding out source of radio-frequency interference, described main storage 105 is additionally operable to store the RSSI of detection last time Value and CQI value, carrying out a certain operation (as screen is lighted, insert USB line or storage read-write etc.) After, described modem 102 for again detect the wireless signal received signal quality and Signal intensity, i.e. detection parameter includes RSSI value and CQI value, and is sent to described processor 103. Described processor 103 is used for being respectively compared the RSSI value of current detection and CQI value and described primary storage The RSSI value of detection last time of device 105 storage and the size of CQI value.If the RSSI of current detection The RSSI value that value detected less than last time, and/or, the CQI value of current detection is less than detection last time CQI value, described processor 103 determines that the RSSI value of current detection reduces and/or the CQI of current detection Value reduces, and the most described radio-frequency module 104 sensitivity declines, and then reduces and/or CQI according to RSSI value Interference source is oriented in value reduction.

Do the measure alleviating interference afterwards, go to realize by two modes: one is to subtract in terms of interference source Little, such as, described processor 103 changes signalman's working frequency of interference source makes its higher hamonic wave avoid The working frequency range that radio-frequency module 104 receives, or, described processor 103 reduces data/address bus 101 Driving force makes its noise amplitudes reduce, or, even when the radio-frequency module 104 of high priority is (as logical Words) temporarily cease the baseband module of current operation when being affected.Two is from radio frequency disturbed object portion Divide and alleviate, such as, described processor 103 switch operating channel.

This adaptive interference elimination method, contributes to reducing extra filter circuit cost, improves Radio-frequency performance also will not be impacted by base band signal transmission quality simultaneously.

By analysis above, the method for detection interference can be by comparing RSSI value and CQI Value realizes detection and the reduction process of wireless terminal Radio frequency interference.

Another embodiment of the present invention also provides for a kind of method detecting wireless terminal Radio frequency interference, such as figure Described in 2, a kind of method flow detecting wireless terminal Radio frequency interference for another embodiment of the present invention shows It is intended to.

Step 201, the wireless reception of signals when modem detection radio-frequency module of wireless terminal works Signal quality and signal intensity, obtain the RSSI value of current detection and CQI value, and be sent to Processor.

Such as, described modem at any time or be periodically detected the signal quality of wireless reception of signals with And signal intensity.

Step 202, described processor judge the RSSI value of described current detection and a RSSI threshold value, The magnitude relationship of the 2nd RSSI threshold value, the CQI value of described current detection and a CQI threshold value, the The magnitude relationship of two CQI threshold values.

Wherein, a described RSSI threshold value can be more than or equal to described 2nd RSSI threshold value, described Oneth CQI threshold value is more than or equal to described 2nd CQI threshold value.

A described RSSI threshold value, the 2nd RSSI threshold value, a CQI threshold value, the 2nd CQI threshold Value storage in memory, such as dynamic memory (such as main storage 105) or non-volatile deposit Storage media (such as storage device 109).

Described processor determines whether Radio frequency interference according to the magnitude relationship judged, if described institute State a RSSI threshold value and be equal to described second equal to described 2nd RSSI threshold value, a CQI threshold value During CQI threshold value, according to judged result, described processor determines whether described radio-frequency module occurs radio frequency to do Disturb, specifically as described in step 203a, 203b and 203c.

Step 203a, if the RSSI value of described current detection is more than or equal to a described RSSI Threshold value, and the CQI value of described current detection is more than or equal to a described CQI threshold value, described place Reason device determines that the Radio frequency interference of the described radio-frequency module of described wireless terminal is less than the first interference threshold, from And determine and Radio frequency interference does not occurs.

When the Radio frequency interference of described radio-frequency module is less than the first interference threshold, described processor determines institute State radio-frequency module be operated in one good in the environment of, i.e. disturb low, good communication quality, do not occur Radio frequency interference.

Step 203b, if the RSSI value of described current detection is less than described 2nd RSSI threshold value, And the CQI value of described current detection is less than a described CQI threshold value, described processor determines described The Radio frequency interference of the described radio-frequency module of wireless terminal is more than the second interference threshold, so that it is determined that penetrate Frequency interference.

When the Radio frequency interference of described radio-frequency module is more than the first interference threshold, described processor determines institute The wireless signal stating radio-frequency module current is more weak, Radio frequency interference occurs, it may be possible to the position that mobile phone is current Shielded or away from reasons such as base stations.

Step 203c, if the RSSI value of described current detection is more than or equal to a described RSSI Threshold value, and the CQI value of described current detection is less than described 2nd CQI threshold value, described processor is true The signal intensity of the signal that the antenna of the radio-frequency module determining wireless terminal receives meets requirement, but signal packet Containing interference signal.

If a described RSSI threshold value is more than described 2nd RSSI threshold value, a CQI threshold When value is more than described 2nd CQI threshold value, described processor is possible not only to determine according to judged result described Whether radio-frequency module there is Radio frequency interference, it is also possible to judge to occur the order of severity of Radio frequency interference, specifically As described in step 203d of Fig. 3,203e, 203f and 203g.

Step 203d, if the RSSI value that described processor determines described current detection is more than or equal to A described RSSI threshold value, and determine that the CQI value of described current detection is more than or equal to described first CQI threshold value, described processor determines that the Radio frequency interference of the described radio-frequency module of described wireless terminal is less than First interference threshold, be i.e. operated in one good in the environment of, there is not Radio frequency interference.

Step 203e, if described processor determines that the RSSI value of described current detection is less than described the Two RSSI threshold values, and determine that the CQI value of described current detection is less than described 2nd CQI threshold value, institute State processor and determine that the Radio frequency interference of described radio-frequency module of described wireless terminal is more than the second interference threshold Value, wherein, described second interference threshold is more than described first interference threshold, and described radio frequency mould is i.e. described The current wireless signal of block is more weak, and substantial radio frequency interference occurs, it may be possible to the current position of mobile phone is shielded Cover or away from reasons such as base stations.

Step 203f, if described processor determines that the RSSI value of described current detection is more than described the Two RSSI threshold values but less than a described RSSI threshold value, and determine the CQI value of described current detection More than described 2nd CQI threshold value but less than a described CQI threshold value, described processor determines described The Radio frequency interference of the described radio-frequency module of wireless terminal is more than described first interference threshold but less than described Second interference threshold, wherein, described second interference threshold is more than described first interference threshold, i.e. illustrates The current wireless signal of described radio-frequency module is general, and general Radio frequency interference occurs.

Step 203g, if the RSSI value that described processor determines described current detection is more than or equal to A described RSSI threshold value, and determine that the CQI value of described current detection is less than described 2nd CQI threshold Value, described processor determines that the signal intensity of the signal that the antenna of the radio-frequency module of wireless terminal receives is full Foot requirement, but signal packet is containing interference signal, causes the noise of entirety to be elevated and have impact on CQI value.

Determine Radio frequency interference occurs time, for finding out source of radio-frequency interference further, another of the present invention is real Execute example and also provide for a kind of method determining wireless terminal source of radio-frequency interference, as shown in Figure 4, for the present invention A kind of method flow schematic diagram determining wireless terminal source of radio-frequency interference of another embodiment, mainly includes Following content.

Step 301, signal quality and the signal of the wireless signal that modem detection receives are strong Degree, detection parameter includes RSSI value and CQI value, and is sent to memorizer (such as main storage 105).

Step 302, the RSSI value of described memorizer storage detection and CQI value.

Step 303, is carrying out a certain operation (as screen is lighted, insert USB line or storage read-write etc.) After, described modem detects signal quality and the signal intensity of the wireless signal received again, Detection parameter includes RSSI value and CQI value, and is sent to described processor.

Step 304, described processor is respectively compared the RSSI value of current detection and CQI value with described The RSSI value of detection last time of memorizer storage and the size of CQI value.

Step 305, described processor reduces according to the RSSI value of current detection and/or current detection CQI value reduces orients interference source.

Such as, if the RSSI value of current detection is less than the RSSI value of detection last time, and/or, when The CQI value of front detection is less than the CQI value of detection last time, and described processor determines the RSSI of current detection Value reduces, and/or the CQI value of front detection reduces, and described radio-frequency module sensitivity declines, Jin Ergen Reduce according to RSSI value and/or interference source is oriented in CQI value reduction.

After determining source of radio-frequency interference, for reducing Radio frequency interference, another embodiment of the present invention also provides for A kind of method reducing wireless terminal Radio frequency interference, as it is shown in figure 5, be the one of another embodiment of the present invention Plant the method flow schematic diagram reducing wireless terminal Radio frequency interference, mainly include following content.

Step 401, the processor of wireless terminal is respectively compared RSSI value and the CQI value of current detection The RSSI value of detection last time with memorizer storage and the size of CQI value.

Step 402, described processor reduces according to the RSSI value of current detection and/or current detection CQI value reduces orients interference source.

Step 403, described processor is additionally operable to, according to the interference source oriented, change described interference source Running parameter to reduce Radio frequency interference.

Do the measure alleviating interference afterwards, go to realize by two modes: one is to subtract in terms of interference source Little, such as, described processor changes signalman's working frequency of interference source makes its higher hamonic wave avoid radio frequency The working frequency range that module receives, or, described processor reduces the driving force of data/address bus 101 makes it Noise amplitudes reduces, or, even temporary when the radio-frequency module (such as call) of high priority is affected Time stop the current baseband module run.Two is to alleviate from the disturbed object part of radio frequency, such as, and institute State processor switch operating channel.

In sum, this adaptive interference elimination method, contribute to reducing extra filter circuit Cost, improves base band signal transmission quality and also will not impact radio-frequency performance simultaneously.

Those skilled in the art is it can be understood that arrive, for convenience and simplicity of description, above-mentioned The system described, the specific works process of device and unit, it is referred in preceding method embodiment Corresponding process, does not repeats them here.

In several embodiments provided herein, it should be understood that disclosed system, device And method, can realize by another way.Such as, device embodiment described above is only It is schematic, such as, the division of described unit, it is only a kind of logic function and divides, actual real Can have now other dividing mode, the most multiple unit or assembly can in conjunction with or can be integrated To another system, or some features can be ignored, or does not performs.Another point, shown or discussed Coupling each other direct-coupling or communication connection can be by some interfaces, device or list The INDIRECT COUPLING of unit or communication connection, can be electrical, machinery or other form.

The described unit illustrated as separating component can be or may not be physically separate, The parts shown as unit can be or may not be physical location, i.e. may be located at a ground Side, or can also be distributed on multiple NE.Can select therein according to the actual needs Some or all of unit realizes the purpose of the present embodiment scheme.

It addition, each functional unit in each embodiment of the application can be integrated in a processing unit In, it is also possible to it is that unit is individually physically present, it is also possible to two or more unit are integrated in In one unit.Above-mentioned integrated unit both can realize to use the form of hardware, it would however also be possible to employ soft The form of part functional unit realizes.

If described integrated unit realizes and as independent product using the form of SFU software functional unit When selling or use, can be stored in a computer read/write memory medium.Based on such reason Solve, part that prior art is contributed by the technical scheme of the application the most in other words or this skill Completely or partially can embodying with the form of software product of art scheme, this computer software product It is stored in a storage medium, including some instructions with so that a computer equipment (can be Personal computer, server, or the network equipment etc.) perform method described in each embodiment of the application All or part of step.And aforesaid storage medium includes: USB flash disk, portable hard drive, read-only storage Device (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), the various medium that can store program code such as magnetic disc or CD.

Last it is noted that above example is only in order to illustrate technical scheme, rather than to it Limit；Although the present invention being described in detail with reference to previous embodiment, the ordinary skill of this area Personnel it is understood that the technical scheme described in foregoing embodiments still can be modified by it, or Person carries out equivalent to wherein portion of techniques feature；And these amendments or replacement, do not make corresponding skill The essence of art scheme departs from the spirit and scope of various embodiments of the present invention technical scheme.

Claims (11)

1. a wireless terminal, it is characterised in that including: modem, processor, radio frequency mould Block and memorizer, wherein,

Described modem, wireless reception of signals during for detecting the work of described radio-frequency module RSSI value and CQI value, and it is sent to described processor；

Described processor, for judging RSSI value and the storage of described memorizer of described current detection Oneth RSSI threshold value, the magnitude relationship of the 2nd RSSI threshold value, the CQI value of described current detection with Oneth CQI threshold value of described memorizer storage, the magnitude relationship of the 2nd CQI threshold value, wherein, institute Stating a RSSI threshold value and be more than or equal to described 2nd RSSI threshold value, a described CQI threshold value is big In or equal to described 2nd CQI threshold value；And determine whether to occur radio frequency to do according to the magnitude relationship judged Disturb.

2. wireless terminal as claimed in claim 1, it is characterised in that if described current detection RSSI value be more than or equal to a described RSSI threshold value, and the CQI value of described current detection more than or Equal to a described CQI threshold value, described processor is additionally operable to determine the Radio frequency interference of described radio-frequency module Less than the first interference threshold, so that it is determined that there is not Radio frequency interference.

3. wireless terminal as claimed in claim 1, it is characterised in that if described current detection RSSI value is less than described 2nd RSSI threshold value, and the CQI value of described current detection is less than described second CQI threshold value, described processor is additionally operable to the Radio frequency interference determining described radio-frequency module more than the second interference , so that it is determined that there is Radio frequency interference in threshold value.

4. wireless terminal as claimed in claim 1, it is characterised in that if described current detection RSSI value is more than or equal to a described RSSI threshold value, and the CQI value of described current detection is less than institute Stating the 2nd CQI threshold value, described processor is additionally operable to determine the signal that the antenna of described radio-frequency module receives Comprise interference signal.

5. the wireless terminal as described in claim 1-4 any one, it is characterised in that described process Device is additionally operable to the last time being respectively compared the RSSI value of current detection and CQI value with the storage of described memorizer The RSSI value of detection and the size of CQI value, reduce and/or current according to the RSSI value of current detection The CQI value of detection reduces orients interference source.

6. wireless terminal as claimed in claim 5, it is characterised in that described processor is additionally operable to root According to the interference source oriented, change the running parameter of described interference source to reduce Radio frequency interference.

7. the detection method of the Radio frequency interference of a wireless terminal, it is characterised in that described wireless terminal bag Including: modem, processor, radio-frequency module and memorizer, wherein, described method includes:

Described modem detects the RSSI value of wireless reception of signals when described radio-frequency module works And CQI value, and it is sent to described processor；

Described processor judges RSSI value and the first of the described memorizer storage of described current detection RSSI threshold value, the magnitude relationship of the 2nd RSSI threshold value, the CQI value of described current detection is deposited with described Oneth CQI threshold value of reservoir storage, the magnitude relationship of the 2nd CQI threshold value, wherein, described first RSSI threshold value is more than or equal to described 2nd RSSI threshold value, and a described CQI threshold value is more than or equal to Described 2nd CQI threshold value；And determine whether Radio frequency interference according to the magnitude relationship judged.

8. method as claimed in claim 7, it is characterised in that described according to the magnitude relationship judged Determine whether to occur Radio frequency interference to specifically include:

If the RSSI value of described current detection is more than or equal to a described RSSI threshold value, and described The CQI value of current detection is more than or equal to a described CQI threshold value, and described processor determines described The Radio frequency interference of radio-frequency module is less than the first interference threshold, so that it is determined that there is not Radio frequency interference.

9. method as claimed in claim 7, it is characterised in that described according to the magnitude relationship judged Determine whether to occur Radio frequency interference to specifically include:

If the RSSI value of described current detection is less than described 2nd RSSI threshold value, and described current inspection The CQI value surveyed is less than described 2nd CQI threshold value, and described processor determines penetrating of described radio-frequency module Frequency interference is more than the second interference threshold, so that it is determined that there is Radio frequency interference.

10. method as claimed in claim 7, it is characterised in that described according to the size pass judged System determines whether to occur Radio frequency interference to specifically include:

If the RSSI value of described current detection is more than or equal to a described RSSI threshold value, and described The CQI value of current detection is less than described 2nd CQI threshold value, and described processor determines described radio frequency mould The signal packet that the antenna of block receives is containing interference signal.

The determination method of the source of radio-frequency interference of 11. 1 kinds of wireless terminals, it is characterised in that described wireless end End includes: modem, processor, radio-frequency module and memorizer, and wherein, described method includes:

Described modem detects the RSSI value of wireless reception of signals when described radio-frequency module works And CQI value, and it is sent to described memorizer；

The RSSI value of described memorizer storage current detection and CQI value；

Described processor is respectively compared the RSSI value of current detection and CQI value and stores with described memorizer The RSSI value of detection last time and the size of CQI value, reduce according to the RSSI value of current detection and/ Or current detection CQI value reduce orient interference source.