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209results about How to "Guaranteed call quality" patented technology
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Conversation voice monitoring method and system
ActiveCN105261362ACall voice monitoringImprove service qualitySpeech recognitionSpeech soundVoice data
The invention discloses a conversation voice monitoring method and system. The method comprises: collecting voice data of conversion of a server side and a client in real time; carrying out voice identification on the voice data of the service side and the client to obtain a server side identification text and a client identification text; and according to the conversation voice data of the server side and the corresponding identification text as well as the conversation voice data of the client and the corresponding identification text, carrying out real-time monitoring on the conversation voice of the server side. With the method and system, comprehensive and real-time monitoring of conversation voices of the customer service staff can be realized; and the service quality of the customer service staff is improved.
Owner:科大讯飞长江信息科技有限公司
System, apparatus and method of media negotiation in network telephone call
ActiveCN101227482ASave bandwidthGuaranteed call qualityInterconnection arrangementsError preventionThe InternetNetwork conditions
The invention discloses a media negotiation process in an internet telephone call, the device and the system. The process comprises the first step is that a double party media gateway builds up the calling connection through an internet telephone signaling, chooses voice coding and encoding way through the process of media negotiation, and establishes the bidirectional media stream on the basis of real-time transmission protocol PTR, the second step is that the double party media gateway monitors the network conditions in the call process after established the call, the third step is that whether needed to change coding and decoding is judged according to the network conditions, and the second media negotiation is initiated through the internet telephone signaling and the media negotiation process when the coding and decoding is needed to changed, the opposite terminal media gateway is informed to switch into the coding and encoding format which is chosen for changing the coding and encoding, the home media gateway can also be switched into the coding and encoding format which is chosen after the opposite terminal is switched successfully, and the fourth step is that double parties build up new bidirectional media stream according to the new coding and encoding format to communicate continuously.
Owner:ZTE CORP
Cell switching method and device
InactiveCN103841613AIncrease success rateGuaranteed call qualityWireless communicationCommunication qualityTelecommunications
The invention discloses a cell switching method and device, and aims to solve problems that, when the UE (User equipment) is used for cell switching, the frequent UE switching makes the signaling cost increase, the switching delay increase, and the communication quality affected. The cell switching method comprises the following steps that: a measurement report sent by the UE is received; according to the measurement report, a target cell meeting a preset condition is filtered so as to generate a target cell list; a switching request message is sent to all target cells of the target cell list; when a confirmation message which is fed back by the target cell is received in a preset duration, according to related parameter information of the target cell, the target cell in the target cell list are sorted in order of priority, and based on the sorted result, the target cell list is updated; and the UE is instructed to switch to the target cell in the highest priority in the updated target cell list. With application of the technical scheme of the invention, the success rate of the cell switching by the UE can be effectively improved, the time delay in the multiple switching is reduced, and the call quality is guaranteed.
Owner:COMBA TELECOM SYST CHINA LTD
Video call system, device and method
ActiveCN105516635AImprove call qualityGuaranteed call qualityTwo-way working systemsSecuring communicationCommunication qualityComputer terminal
The invention discloses a video call system, device and method. The method comprises the steps: connecting a first LTE network, and building a first communication channel; building video call connection with an opposite side through the first LTE network, and transmitting call data through the first communication channel; connecting the second LTE network in a video call process when the preset condition is met, and building a second communication channel; and transmitting the call data through the first communication channel and the second communication channel. The beneficial effects of the invention are that the method starts two 4G networks in the video call process for transmitting the call data at the same time, thereby enlarging the network bandwidth, improving the data transmission rate, and improving the video communication quality. Even if the first 4G network signal is weaker, the second 4G network can be used for guaranteeing the video call quality, thereby improving the flexibility of video call and the intelligentization level of a mobile terminal, and improving the video call experience of a user.
Owner:NUBIA TECHNOLOGY CO LTD
Pre-configuration method, pre-configuration system and access points for return link resources
InactiveCN103002467AGuaranteed communication qualityImprove access efficiencyNetwork traffic/resource managementAssess restrictionCommunication qualityComputer science
The invention discloses a pre-configuration method for return link resources. The pre-configuration method includes acquiring pre-configuration information from the network side after accessing access points (AP) to the network; and selecting the access points to access to the network according to self-capacity and the acquired pre-configuration information. The invention further discloses a pre-configuration system and access points for the return link resources, thereby realizing pre-configuration of the return link resources, improving access efficiency of the AP on the premise of guaranteeing communication quality of the AP, and accordingly guaranteeing communication quality after accessing of the AP.
Owner:ZTE CORP
Intelligent anti-interference wireless communication method and system, server and storage medium
InactiveCN108834159AImprove experienceGuaranteed call qualityWireless communicationIntelligent NetworkPacket loss
The invention discloses an intelligent anti-interference wireless communication method, an intelligent anti-interference wireless communication system, a server and a storage medium. Whether a call environment is seriously interfered according to a delay time parameter, a packet loss probability parameter and an effective information proportion of the call environment through detecting the call environment of a current mobile terminal; when the call environment is seriously interfered, a target frequency band of which the frequency band call quality meets a preset screening condition is screened from a working frequency band corresponding to a communication signal of the current mobile terminal; a data signal to be transmitted and an interference signal are extracted from the communicationsignal, and the waveform and frequency component of the interference signal are acquired; the data to be transmitted is acquired from the data signal to be transmitted, and the interference signal isrebuilt according to the data to be transmitted and the waveform and frequency component of the interference signal, and the rebuilt interference signal is switched to the target frequency band fromthe current network frequency band. Therefore, the call environment with relatively large interference can be avoided, and the interference signal is eliminated, the call quality is ensured, and the user experience is enhanced.
Owner:SHENZHEN LINGDU INTELLIGENT CONTROL TECH CO LTD
Signal measuring method, equipment and system
InactiveCN103650565AFeel goodGuaranteed call qualityNetwork traffic/resource managementTransmission monitoringCommunications systemResource information
The invention discloses a signal measuring method, equipment and a system. The method is suitable for a wireless communication system, the wireless communication system comprises a super cell, and the super cell comprises two or more than two sectors. The method comprises the following steps: a base station controller transmits to-be-measured information to a base station, wherein the to-be-measured information comprises a sector marker of the to-be-measured sector, a carrier wave marker of a carrier wave to be measured in the to-be-measured secotor and wireless resource information of user equipment (UE) to be measured, so that the base station measures an uplink signal of the UE to be measured in the sector to be measured according to the to-be-measured information; obtained measuring results of the uplink signal is reported to the base station controller; and the base station controller receives the uplink signal measuring results reported by the base station. Through adoption of the implementations of the invention, the uplink signal of the user equipment in the sector can be measured in the super cell, so that the base station controller can perform mobile management and other operations according to the measuring results.
Owner:HUAWEI TECH CO LTD
Method for intelligently switching on/off mobile terminal antenna and corresponding mobile terminal
InactiveCN102710275ASolve design problems with high frequency bandwidth requirementsImprove communication qualityPower managementSimultaneous aerial operationsCommunication qualityCommunications system
Owner:ZTE CORP
Acoustic echo removing method
InactiveCN1956480AFix the echo problemCancel echoTwo-way loud-speaking telephone systemsMean squareLinear filter
This invention relates to a method for eliminating acoustic echo including the following steps: the minimum mean square algorithm of adaptive step wave band standardization, eliminating wave beams of noises to form non-linear filter to eliminate acoustic echoes. This invention applies an exclusive adaptive step non-linear filter technology to divide signals into multiple wave bands for process and alter steps adaptively according to the echo environment to eliminate echoes to increase convergence speed and reduce radiation speed to improve the ability for eliminating echo.
Owner:SHANGHAI BEILING
Voice adjustment method and device, terminal and storage medium
ActiveCN107734126AGuaranteed call qualitySubstation speech amplifiersComputer terminalHearing perception
The application discloses a voice adjustment method and device, a terminal and a storage medium, belonging to the field of artificial intelligence. The method includes the following steps: when a callprocess is started, acquiring call information, wherein the call information at least includes an object identifier of a current call object; acquiring a voice adjustment model, wherein the voice adjustment model is a model trained based on historical call parameters, and the historical call parameters include a target voice volume when talking to different call objects; inputting the call information to the voice adjustment model, and acquiring a target call volume output by the voice adjustment model; and performing voice adjustment on acquired home terminal voices based on the target callvolume. According to the embodiment of the application, as the voice adjustment model is trained according to the target voice volume when taking to different call objects, after performing voice adjustment by using the target voice volume output by the voice adjustment model, the volume of the home terminal voices can conform to the actual hearing situations of the call objects, and thus the callquality can be ensured.
Owner:GUANGDONG OPPO MOBILE TELECOMM CORP LTD
Method and device for controlling audio output of terminal
InactiveCN106375563AImprove experienceGuaranteed claritySubstation equipmentCLARITYComputer terminal
The invention provides a method and device for controlling audio output of a terminal. The method comprises the following steps: when it is determined that a terminal is connected with an earphone and that a call channel and a media channel need to output audio at the same time, judging whether an audio separate output mode of the terminal is opened; and if it is determined that the audio separate output mode of the terminal is opened, controlling the call channel to output call audio from the earphone and controlling the media channel to output media audio from a loudspeaker of the terminal; or controlling the call channel to output the call audio from the loudspeaker of the terminal and controlling the media channel to output the media audio from the earphone. That is, the call sound and media sound can be flexibly controlled to be output from different output channels, so that a call task and a media playing task of the terminal do not influence each other, which not only guarantees the clarity of the call sound and ensures the call quality, but also enables a user to listen to the media sound in a call process, and thus the user experience is improved.
Owner:MEIZU TECH CO LTD
Cell phone and conversation signal processing method thereof
ActiveCN102368793AUnaffected by ambient noiseGuaranteed call qualityInterconnection arrangementsSpeech analysisHeadphonesComputer science
The invention discloses a conversation signal processing method for a cell phone. The method comprises the steps of: detecting a current conversation state of the cell phone so as to judge whether the cell phone enters an earphone conversation state; when the cell phone is in the earphone conversion state, acquiring a first environment noise signal by using a main microphone; and performing noise inhibition processing on a conversation signal obtained through an earphone microphone according to the first environment noise signal, so as to obtain the conversation signal subjected to the noise inhibition processing. The invention further discloses the cell phone. Accordingly, by means of the technical scheme provided by the invention, the environment noise signal in the conversation signal acquired by the earphone microphone can be removed by using the environment noise signal to perform the noise inhibition processing when a user is in the earphone conversation state, and thus, a user is ensured to be free from the influences of environment noises when holding a conversation by using the earphone, and the conversation quality is ensured.
Owner:NANTONG XINJING ELECTRONIC TECH CO LTD
Video call system, device and method
InactiveCN105227892AImprove call qualityGuaranteed call qualityTwo-way working systemsComputer terminalData transmission
The invention discloses a video call system, device and method. The system comprises a first mobile terminal, a second mobile terminal and a transfer server, wherein the first mobile terminal is used for establishing a video call connection with the second mobile terminal, establishing a first communication channel and a second communication channel through a mobile communication network and a wireless network, and transmitting call data through the first communication channel and the second communication channel; the second mobile terminal is used for establishing the first communication channel or / and the second communication channel through the mobile communication network or / and the wireless network, and transmitting the call data through the first communication call or / and the second communication channel; and the transfer server is used for receiving the call data, resolving a channel type of a destination address in the call data, judging whether to perform data conversion on the call data or not according to the channel type, and transferring the call data through a corresponding communication channel. The call data is transmitted through the mobile communication network and the wireless network in a video call process, so that a network bandwidth is extended; the data transmission rate is increased; and the video call quality is improved.
Owner:NUBIA TECHNOLOGY CO LTD
Mobile phone noise reduction cover material and preparation method thereof
The invention discloses a mobile phone noise reduction cover material which is prepared from the following components in parts by weight: 100-300 parts of thermoplastic resin, 60-70 parts of cenosphere,100-120 parts of elastomer, 0.1-10 parts of foaming agent, 0.5-8 parts of coupling agent, 0.5-10 parts of lubricant and 0.1-10 parts of antioxidant. The mobile phone noise reduction cover material is relatively light in weight and can be carried over; the material is excellent in physical and chemical property and mechanical property and can meet complex formation and structures; after being subjected to injection molding, the material can be used in match with conventional ordinary headsets, then no extra headsets need to be bought, and the cost of a product is lowered. The product is excellent in sound insulation effect, can effectively ensure the talking quality in a noisy environment, or can be used for making calls in a meeting room or library without walking outside the room or interfering other people.
Owner:HEFEI GENIUS NEW MATERIALS
High-frequency and low-frequency combined multi-frequency antenna array
InactiveCN106848603ASmall sizeGuaranteed CoverageAntenna couplingsSeparate antenna unit combinationsHigh isolationDouble frequency
The invention relates to a high-frequency and low-frequency combined multi-frequency antenna array. The high-frequency and low-frequency combined multi-frequency antenna array comprises a low-frequency array composed of low-frequency vibrators and a first high-frequency array, a second high-frequency array and a third high-frequency array which are each composed of high-frequency vibrators. The high-frequency and low-frequency combined multi-frequency antenna array is characterized in that the middle of an antenna is provided with a double-frequency array which is formed by coaxially nesting the low-frequency array and the first high-frequency array, the second high-frequency array and the third high-frequency array are distributed at the two sides of the double-frequency array in a shoulder-by-shoulder and staggered mode, and the spacing distance among the high-frequency vibrators in the second high-frequency array is equal to that among the high-frequency vibrators in the third high-frequency array. According to the high-frequency and low-frequency combined multi-frequency antenna array, high gain, multiple frequency bands, high isolation and high reliability of the antenna are achieved on the premise that the size is small, and a new array antenna array arrangement scheme is provided for achieving the section coverage purposes of achieving station antenna coverage, high-quality communication and data transmission ratio, saving station space, increasing customer volume and the like.
Owner:WUHAN HONGXIN TELECOMM TECH CO LTD
Anti-interference circuit, mobile terminal and method for suppressing harmonic interference
ActiveCN106230446AGuarantee the quality of operationGuaranteed call qualityTransmissionFrequency bandRadio frequency
The invention provides an anti-interference circuit, a mobile terminal and a method for suppressing harmonic interference. The method comprises the following steps: acquiring a base frequency signal by detecting a frequency band in which the mobile terminal is positioned; performing frequency doubling, amplification and delay processing on the base frequency signal to obtain an anti-interference signal which has the same frequency and amplitude as an interference signal, and is reverse to the interference signal in phase; and outputting the anti-interference signal and a communication signal of the mobile terminal together in order to eliminate the interference signal in the communication signal. The base frequency signal is subjected to frequency doubling to generate the anti-interference signal which is reverse to the interference signal in phase, and the anti-interference signal is output together with the communication signal in order to offset the interference signal, so that radio frequency interference caused by higher harmonics generated by the base frequency signal in the communication signal is eliminated; normal running and conversation quality of the mobile terminal are ensured; and the user experience is improved.
Owner:VIVO MOBILE COMM CO LTD
Wireless communication method and base station controller
InactiveCN103313334AGuaranteed call qualitySupport data businessWireless communicationData transmissionBase station
The invention provides a wireless communication method and a base station controller. The wireless communication method comprises the following steps of receiving a data service request transmitted through a first network by a terminal, wherein a CS (circuit switch) domain and a PS (packet switch) domain of the terminal are attached to the first network; judging whether a data service is required to be switched to a second network or not, wherein the data transmission rate of the second network is higher than that of the first network; and when the data service is required to be switched to the second network, transmitting a switch control instruction to the terminal, and controlling the terminal to switch the PS domain from the first network to the second network. According to the wireless communication method and the base station controller, the voice service call quality can be ensured, and meanwhile, a high-speed data service is supported.
Owner:CHINA MOBILE GRP GUANGDONG CO LTD +1
Method and system for monitoring wireless link state
InactiveCN1983989AAvoid occupyingSave air interface resourcesConnection managementRadio/inductive link selection arrangementsIdle timeTelecommunications
This invention involves in the mobile communication field and discloses a wireless linkage condition monitoring method and its device, which enable the effective monitoring on the wireless linkage condition in its leisure time. In this invention, after entering the leisure time, Node B and UE all stop the monitoring on the wireless linkage, the Node B cyclically starts the downlink channel launching, and the UE examines its quality. When the quality of the examined downlink channel surpasses the pre-limit, the uplink channel is launched; if the quality of the uplink channel is examined over the pre-limit by the Node B in certain time, the wireless linkage is normal; otherwise, it is out of step. UE cyclically examines the quality of the downlink channel launching, if the time of the quality of the downlink channel to surpass the limit is larger than the pre-value, the wireless linkage is determined normal; otherwise, it is determined out-of-step.
Owner:HUAWEI TECH CO LTD
Radiation resistant mobile phone shell with signal enhancement function and manufacturing method of radiation resistant mobile phone shell with signal enhancement function
InactiveCN104065774ASuppress electromagnetic radiationGuaranteed call qualityMagnetic/electric field screeningTelephone set constructionsSolubilityDevice material
The invention discloses a radiation resistant mobile phone shell with the signal enhancement function and a manufacturing method of the radiation resistant mobile phone shell with the signal enhancement function, and belongs to the field of electronic device materials and application. The radiation resistant mobile phone shell comprises a mobile phone protection shell body, the inner side of the mobile phone protection shell body is coated with a radiation resistant coating, stainless steel powder is used as main shielding components of the radiation resistant coating, the particle sizes of the stainless steel powder range from 1 micrometer to 10 micrometer, and alcohol solubility phenolic aldehyde paint is used as base materials of the radiation resistant coating. Two external antennas are machined on the mobile phone protection shell body and used for being connected with a signal antenna and a Wi-Fi antenna of a mobile phone respectively. By means of the radiation resistant mobile phone shell, more than 70% of electromagnetic radiation of the mobile phone can be restrained; with the method that the external antennas are arranged, attenuation, caused by the radiation resistant coating, of signals of the mobile phone can be reduced to 5% from 30% generated when no external antenna is arranged, harm of electromagnetic wave radiation of the mobile phone to the human body is accordingly and effectively restrained, and meanwhile the conversion quality and the network quality of the mobile phone are guaranteed.
Owner:无锡水木清华国珍科技有限公司
A scrolling switching method of mobile station dominated mobile communication system based on MIMO technology
ActiveCN101150868AGuaranteed call qualityData rate has little impactSpatial transmit diversityRadio/inductive link selection arrangementsCommunications systemMimo transmission
The invention relates to a scroll switching method in the mobile station leading mobile communications system utilizing the MIMO technology. A mobile station establishes a activation link with a plurality of base stations, the MIMO transmission is established. In the moving course of the mobile station, the course of scroll switching happens continually, the good quality waiting chosen links replace the activation link with quality which is lower than the threshold quality. The scroll switching process has two advantages: first, the scroll switching judgement reference is the detected service channel quality, namely, the quality of the upgoing or the downgoing service channels with quality which is lower than the threshold quality firstly, the scroll switching can be triggered, the talking quality before the switching and the cell edge are effectively ensured; second, the scroll switching substitutes one of activation links, has a little effect to all service data rate during switching, even the scroll switching is failure, the user data service is not interrupted. The scroll switching is especially suitable for the service with a high data rate.
Owner:WUHAN HONGXIN TELECOMM TECH CO LTD
Call control method and electronic equipment
InactiveCN106210236AGuaranteed call qualityPrevent leakageSubstation speech amplifiersCall controlComputer science
The invention discloses a call control method. When electronic equipment is in a handheld call mode, the method comprises the steps of receiving a voice signal sent by an opposite side, outputting the voice signal via a receiver of the electronic equipment and simultaneously acquiring local voice via a main microphone of the electronic equipment; acquiring sound within preset time via a secondary microphone; determining the magnitude of a first sound signal matched with the voice signal from the sound; and adjusting the volume of the receiver based on the magnitude of the first sound signal to prevent the receiver from leaking voice. Meanwhile, the invention further discloses electronic equipment. By adopting the technical solution, call voice missing can be prevented, the call quality of the electronic equipment is guaranteed, and the user experience is improved.
Owner:LENOVO (BEIJING) CO LTD
Conversation method and conversation device
InactiveCN104968024ASolve the problem that the call quality cannot be guaranteedGuaranteed call qualityCommmunication supplementary servicesCarrier telephony
The present invention discloses a conversation method and a conversation device, and belongs to the communication field. The method comprises the steps of during the process of communicating with a conversation opposite end by using a network telephone, a callback telephone or an operator telephone, monitoring whether a conversation condition of communicating with the conversation opposite end by using the network telephone is superior to a preset condition; when the conversation condition is worse than the preset condition, using the callback telephone or the operator telephone to carry out the subsequent conversation; and when conversation condition is superior to the preset condition, using the network telephone to carry out the subsequent conversation. According to the present invention, by monitoring the current conversation condition during the process of using the free network telephone to communicate with the conversation opposite end, and when the conversation condition is worse than the preset condition, the callback telephone or the operator telephone having relatively stable conversation quality is switched to carry out the subsequent conversation, thereby solving the problem that the conversation quality can not be guaranteed by using the network telephone to communicate, and realizing the effect of guaranteeing the conversation quality even the network telephone is used to communicate.
Owner:XIAOMI INC
Call quality improving method and terminal
The invention provides a call quality improving method and a terminal. When the terminal is in a call state, the terminal determines a call posture according to reporting information of a gravity-acceleration sensor, and after determining a call parameter corresponding to the current call posture from a plurality of the call parameters according to the call posture, carries out noise cancellation according to the call parameter. In the process, through setting different call parameters for different call postures, and calling corresponding call parameter according to the call posture in a call for calling, the purpose of guaranteeing the call quality is realized.
Owner:BLACKSHARK TECH NANCHANG CO LTD
Call processing method and device
InactiveCN102883258AEnsure safetyGuaranteed call qualityConnection managementWireless commuication servicesUser identifierEnd user
The invention provides a call processing method and a call processing device. The call processing method comprises the following steps of: receiving a first call request sent by a calling subscriber, wherein a called subscriber is a mobile terminal user identifier; determining a vehicle-mounted terminal identifier corresponding to the mobile terminal user identifier according to a first corresponding relation between the mobile terminal user identifier stored in a home location register (HLR) and the vehicle-mounted terminal identifier; and sending a second call request to a vehicle-mounted terminal corresponding to the vehicle-mounted terminal identifier. The method is suitable for all the vehicle-mounted terminals and all mobile terminals; according to the corresponding relation between the mobile terminal user identifier and the vehicle-mounted terminal identifier, the called user can be converted from the mobile terminal user identifier into the corresponding vehicle-mounted terminal identifier, and the calling user can be converted from the vehicle-mounted terminal identifier into the mobile terminal user identifier; and therefore, a driver can answer a call and dial a number with a corresponding mobile terminal telephone by the vehicle-mounted terminal, and the safety of a driver during driving is guaranteed.
Owner:CHINA UNITED NETWORK COMM GRP CO LTD
Configuration method for voice enhanced function
InactiveCN101170827AAvoid wastingAvoid processing powerRadio/inductive link selection arrangementsWireless communicationSpeech soundComputer science
The invention discloses a speech enhancement method and relates to speech enhancement technology. The method is to solve the problem that the speech enhancement ability can not be dynamically adjusted with the present 3G core network. The technical scheme is: A. when a call link is established, equipment of every stage reports an own VQE capability supporting form to the upper stage equipment thereof; B. the core network equipment of the call link generates the VQE strategy of the call link according to the VQE capability supporting form; C. according to VQE strategy, adjusting the VQE ability that the core network equipment supports. The invention assures the necessary VQE capability and avoids resource waste and repeat processing at the same time.
Owner:ZTE CORP
Call quality control method and device and mobile terminal
ActiveCN105721705AThe gain is reasonable and effectiveGuaranteed call qualitySubstation equipmentQuality controlSpeech sound
The invention relates to a call quality control method and device and a mobile terminal. The method comprises following steps of obtaining the environment type of a current environment of the terminal; determining gain of a microphone corresponding to the environment type according to the environment type and preset mapping relationships, wherein the mapping relationships comprise corresponding relationships of different environment types and different microphone gains; and amplifying the voice signals collected by the microphone according to the gain of the microphone corresponding to the environment type. According to the method of the embodiment provided by the invention, the currently collected voice signals can be rationally amplified by the microphone; therefore, distortion of the voice heard by an opposite side resulting from excessively amplifying the voice signals is avoided; a condition that the opposite side cannot hear the voice clearly because the voice signals are not amplified enough is avoided; and the call quality when a local side and the opposite side carry out a call is improved.
Owner:BEIJING XIAOMI MOBILE SOFTWARE CO LTD
Speech switching method, terminal, server and system
InactiveCN105101325ARealize automatic detection functionRealize switching functionWireless communicationEvaluation resultMean opinion score
The invention discloses a speech switching method, a terminal, a server and a system. The method comprises the following steps: connecting to a Wifi network; when a dialing operation is detected, sending a test speech to a mean opinion score (MOS) evaluation system through the Wifi network; after the MOS evaluation system performs MOS evaluation on the test speech, obtaining an evaluation result; and determining whether a speech call is made by use of the Wifi network or a GSM network according to the evaluation result.
Owner:NUBIA TECHNOLOGY CO LTD
Automatic gain control (AGC) device for global system for mobile communication (GSM) digital optical fiber frequency-selecting repeater and quick adaptive time slot method for AGC device
ActiveCN102625435AReduce installationReduce debugging stepsPower managementNumerical controlSignal quality
The invention discloses an automatic gain control (AGC) device for a global system for mobile communication (GSM) digital optical fiber frequency-selecting repeater and a quick adaptive time slot method for the AGC device. The AGC device comprises a core logic processing device, a coprocessor, an analog / digital converter (ADC), a radio frequency (RF) numerical control attenuator, an RF frequency mixer and a low noise amplifier. The quick adaptive time slot method for the AGC device comprises an adaptive time slot recovering process and a quick automatic gain control process. The invention has the advantages that a time slot recovering threshold value is calculated adaptively, the steps of installing and debugging by engineering staff are reduced, a signal level input into the ADC can be adjusted to a target level value by the adjusting process, an overall adjusting period is short, signal quality is not influenced substantially, the gain balance of an uplink and a downlink which have small signal time slots can be ensured, and the connection quality of users is ensured.
Owner:HANGZHOU COMDIN TECH
Aeronautical communication method, aircraft and base station
ActiveCN107306428AGuaranteed call qualityAvoid the problem of communication signal interruptionRadio transmissionWireless communicationAviationSignal quality
The invention discloses an aeronautical communication method, an aircraft and a base station. An optimal adjacent base station is determined as a target base station from adjacent base stations of the aircraft under comprehensive consideration of a plurality of factors such as flight attitude parameter values of the aircraft, distances between the aircraft and the adjacent base stations and signal quality parameters of the adjacent base stations, so that the communication quality of airborne terminals is ensured in a flight process of the aircraft, and the problem of communication signal interruption of the airborne terminal in the flight process is solved.
Owner:HANGXUN INFORMATION TECH CO LTD
Emergency communication host with internal and external communication functions
InactiveCN104660752ASimple structureReasonable designTelephone set constructionsSignal processing circuitsEngineering
The invention discloses an emergency communication host with internal and external communication functions. The emergency communication host comprises a host case, a talkback button, a talkback handle, a power circuit, a host internal and external communication circuit and a talkback handle communication circuit, wherein the power circuit comprises a rechargeable battery, an isolated single-end flyback switching power buck circuit, a power switching circuit, a battery charging circuit, a battery protection circuit, a battery voltage detection circuit, a non-isolated Boost circuit, a linear voltage stabilizing circuit and an extension voltage supply control circuit; the host internal and external communication circuit comprises a GSM module, an SIM card seat, a GSM antenna, a watchdog circuit, a reset circuit, a voice signal processing circuit, a distress signal detection circuit, a handle on-hook detection button circuit, a buzzer circuit, a low battery capacity indication circuit and a GSM network signal indication circuit. The host is convenient to install and use, high in voice response speed, high in communication quality, high in working reliability and capable of realizing 24-hour emergency calls.
Owner:XIAN UNIV OF SCI & TECH
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