CN114531173A - Method and device for optimizing receiving sensitivity of multi-antenna frequency division duplex mode terminal and terminal equipment - Google Patents

Method and device for optimizing receiving sensitivity of multi-antenna frequency division duplex mode terminal and terminal equipment Download PDF

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Publication number
CN114531173A
CN114531173A CN202210356989.4A CN202210356989A CN114531173A CN 114531173 A CN114531173 A CN 114531173A CN 202210356989 A CN202210356989 A CN 202210356989A CN 114531173 A CN114531173 A CN 114531173A
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signal
antenna
path
main set
diversity
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CN202210356989.4A
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CN114531173B (en
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何川
刘钰锋
郑伟玄
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Spreadtrum Communications Shenzhen Co ltd
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Spreadtrum Communications Shenzhen Co ltd
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0802—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection
    • H04B7/0825—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station using antenna selection with main and with auxiliary or diversity antennas
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

A receiving sensitivity optimization method and device for a multi-antenna frequency division duplex mode terminal are provided, the method comprises: detecting the current signal transmitting power in real time; if the signal transmitting power is larger than a set power threshold value, respectively calculating the signal-to-noise ratio of the main diversity single-path signal and the signal-to-noise ratio of the diversity single-path signal of the receiving end; determining a main set receiving path meeting a turn-off condition according to the signal-to-noise ratio of the main set single-path signal and the signal-to-noise ratio of the diversity single-path signal; and turning off the signals of the main set receiving paths meeting the turning-off condition. By the aid of the scheme, influence of self-interference on normal communication of the terminal equipment can be reduced, and communication quality is improved.

Description

Method and device for optimizing receiving sensitivity of multi-antenna frequency division duplex mode terminal and terminal equipment
Technical Field
The application relates to the technical field of communication, in particular to a method and a device for optimizing receiving sensitivity of a multi-antenna frequency division duplex mode terminal and a terminal device.
Background
Frequency Division Duplexing (FDD) means that uplink and downlink transmissions are performed at different frequencies, and the core of the rf front-end architecture of a communication system in FDD is to combine and separate uplink and downlink signals through a duplexer. Existing frequency division duplex mode terminal devices typically have two antennas, a main set antenna and a diversity antenna. The main antenna is used for transmitting and receiving, and the diversity antenna is only used for receiving. Diversity reception is mainly to counteract the effect of fast fading on received signals, and a receiving end receives signals of different paths simultaneously by using multiple antennas, and then selects and combines the signals into an overall signal to reduce the effect of signal fading, so that the reliability under multipath fading channel transmission can be greatly improved. The main antenna and the antenna have two functions of transmitting and receiving, and have self-interference property, so that in order to overcome the self-interference property, the radio frequency amplifier is required to have good linearity, the duplexer has good isolation between the transmitting and receiving frequencies, and better impedance matching is designed. In addition, in the aspect of the uplink transmission spectrum, special constraints are also required to be performed on the uplink transmission spectrum of a frequency band with a relatively close part of the transceiving frequency range, so as to improve the system receiving sensitivity performance.
When terminal equipment designed on the basis of a plurality of receiving and transmitting antennas works in a frequency division duplex mode, the transmitting power is improved as much as possible under the environment of a real network weak field so as to access a base station to establish connection and transmit data. And the self-interference phenomenon can be more serious when the antenna that is responsible for receiving and dispatching work launches high-power, because duplexer self performance factor or ageing back, can't accomplish well getting rid of the spurious signal of transmission signal sideband, especially fall into the spurious signal of receiving the frequency channel, can influence terminal equipment's normal communication, can lead to the disconnection of being connected of terminal equipment and basic station even.
Disclosure of Invention
The embodiment of the application provides a method and a device for optimizing receiving sensitivity of a multi-antenna frequency division duplex mode terminal, so that the influence of a self-interference phenomenon on normal communication of terminal equipment is reduced, and the communication quality is improved.
In order to solve the above technical problem, an embodiment of the present application provides the following technical solutions:
in one aspect, an embodiment of the present application provides a method for optimizing receiving sensitivity of a multi-antenna frequency division duplex mode terminal, where the method includes:
detecting the current signal transmitting power in real time;
if the signal transmitting power is larger than a set power threshold value, respectively calculating the signal-to-noise ratio of each main set single-path signal and the signal-to-noise ratio of each diversity single-path signal of the receiving end;
determining a main set receiving path meeting a turn-off condition according to the signal-to-noise ratio of the main set single-path signal and the signal-to-noise ratio of each diversity single-path signal;
and turning off the signals of the main set receiving paths meeting the turning-off condition.
Optionally, the determining, according to the signal-to-noise ratio of the main set single path signal and the signal-to-noise ratios of the diversity single path signals, a main set receiving path that meets a turn-off condition includes: and if the signal-to-noise ratio of the main set single-path signal is smaller than the minimum demodulation threshold, determining that a main set receiving path corresponding to the main set single-path signal meets a turn-off condition.
Optionally, the determining, according to the signal-to-noise ratio of the main set single path signal and the signal-to-noise ratios of the diversity single path signals, a main set receiving path that meets a turn-off condition includes:
if the signal-to-noise ratio of the main diversity single-path signal is close to the minimum demodulation threshold, determining the minimum value of the signal-to-noise ratios of the diversity single-path signals;
if the signal-to-noise ratio of the main set single-path signal is smaller than the minimum value, calculating the difference value between the minimum value and the signal-to-noise ratio of the main set single-path signal; and if the difference is larger than a set threshold, determining that a main set receiving path corresponding to the main set single-path signal meets a turn-off condition.
Optionally, the method further comprises: reading a port configuration list after starting up, and controlling a main set antenna connected with a receiving end according to the port configuration list; the signal for turning off the main set receiving path satisfying the turn-off condition comprises: and rewriting the configuration parameters of the master set receiving access meeting the turn-off condition in the port configuration list to obtain a new port configuration list, and controlling a master set antenna connected with a receiving end according to the new port configuration list.
Optionally, the antenna of the multi-antenna frequency division duplex mode terminal includes any one of:
one antenna is a main diversity antenna, and the other antenna is a diversity antenna;
one antenna is a main antenna set, and the other three antennas are diversity antennas;
and four antennas, wherein two antennas are main set antennas, and the other two antennas are diversity antennas.
Optionally, the method further comprises: optionally, the port configuration list is restored or maintained if the signal transmission power is less than or equal to a set power threshold.
On the other hand, an embodiment of the present application further provides a device for optimizing receiving sensitivity of a multi-antenna frequency division duplex mode terminal, where the device includes:
the power detection module is used for detecting the current signal transmitting power in real time;
the signal-to-noise ratio calculation module is used for respectively calculating the signal-to-noise ratio of each main set single-path signal and the signal-to-noise ratio of each diversity single-path signal at the receiving end under the condition that the signal transmitting power is greater than a set power threshold value;
the judging module is used for determining a main set receiving channel meeting the turn-off condition according to the signal-to-noise ratio of the main set single-channel signal and the signal-to-noise ratio of each diversity single-channel signal;
and the control module is used for turning off the signals of the main set receiving paths meeting the turning-off condition.
Optionally, the determining module is specifically configured to determine that a main set receiving path corresponding to the main set single-path signal satisfies a turn-off condition when the signal-to-noise ratio of the main set single-path signal is smaller than a minimum value of the signal-to-noise ratios of the diversity single-path signals.
Optionally, the apparatus further comprises: the configuration module is used for reading a port configuration list after starting up and controlling a main set antenna connected with a receiving end according to the port configuration list; the control module is specifically configured to rewrite configuration parameters of a main set receiving path that meets a shutdown condition in the port configuration list to obtain a new port configuration list; and the configuration module is also used for controlling a main set antenna connected with the receiving end according to the new port configuration list.
Optionally, the antenna of the multi-antenna frequency division duplex mode terminal includes any one of:
one antenna is a main diversity antenna, and the other antenna is a diversity antenna;
one antenna is a main antenna set, and the other three antennas are diversity antennas;
and four antennas, wherein two antennas are main set antennas, and the other two antennas are diversity antennas.
Optionally, the control module is further configured to restore or maintain the port configuration list when the signal transmission power is less than or equal to a set power threshold.
On the other hand, the embodiment of the present application further provides a multi-antenna frequency division duplex mode terminal device, where the terminal device includes the foregoing receiving sensitivity optimization apparatus.
In another aspect, the present invention also provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and has a computer program stored thereon, where the computer program is executed by a processor, and the computer program causes the foregoing method to be performed.
On the other hand, the embodiment of the present application further provides an apparatus for optimizing the receiving sensitivity of a multi-antenna frequency division duplex mode terminal, which includes a memory and a processor, where the memory stores a computer program that can be executed on the processor, and the processor executes the computer program to cause the foregoing method to be executed.
According to the method and the device for optimizing the receiving sensitivity of the multi-antenna frequency division duplex mode terminal, under the condition that the signal transmitting power is larger than the set power threshold value, in order to avoid the influence of self-interference noise generated by the antenna channel of the main set on the signal receiving sensitivity, the strength of the single-path signal of the main set is judged, and under the condition that the combined data is influenced by the extremely weak signal of the main set, the signal of the corresponding receiving path of the main set is cut off, so that the receiving sensitivity of the terminal equipment is optimized, and the communication stability of the terminal equipment is improved.
By using the method and the device for optimizing the receiving sensitivity of the multi-antenna frequency division duplex mode terminal, the effect can be achieved under the condition that the existing hardware design of the terminal equipment is not changed.
Drawings
Fig. 1 is a flowchart of a method for optimizing the receiving sensitivity of a multi-antenna fdd mode terminal according to an embodiment of the present invention;
fig. 2 is a schematic diagram of signal transmission and reception in a terminal device applied in the method for optimizing the receiving sensitivity of a multi-antenna fdd mode terminal according to the embodiment of the present application;
FIG. 3 is a schematic diagram illustrating a control principle of the main set path shutdown of the receiving port in the embodiment of the present application;
fig. 4 is another flowchart of a method for optimizing the receiving sensitivity of a multi-antenna fdd mode terminal according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a receiving sensitivity optimization apparatus of a multi-antenna fdd mode terminal according to an embodiment of the present invention;
fig. 6 is another schematic structural diagram of the apparatus for optimizing the receiving sensitivity of a multi-antenna fdd mode terminal according to an embodiment of the present application.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present application more comprehensible, embodiments accompanying figures are described in detail below.
In the terminal equipment in the frequency division duplex mode, the multi-antenna design is mainly used for overcoming multipath fading, a receiving end simultaneously receives signals of different paths by using the multi-antenna, and then the signals are selected and combined into an overall signal so as to reduce the influence of signal fading. Since there may be weak fields in a real network environment: the main set antenna has the maximum transmitting power, and at this time, the main set receiving channel signal is weaker than the diversity receiving channel signal, and the signal received by the diversity receiving channel can be demodulated normally, but the signal strength received by the main set receiving channel is relatively weaker, and the self-interference noise transmitted to the receiving end RX through the duplexer TX is very large.
Accordingly, the ideal combining sensitivity is calculated as follows:
Rx_total＝Rx_max-10*log(1+(Rx_max/Rx_min))
wherein, Rx _ total is the final receiving sensitivity, Rx _ min is one path with low power in the receiving sensitivity, and Rx _ max is one path with high power in the receiving sensitivity.
Even though the theoretical calculation can provide gain for the whole receiving sensitivity in most cases, the calculation is only carried out without considering that the processing of the signal by the decoding module after data combination is a technical limit. In order to ensure the reliability of the combining algorithm, the difference between the strength of the received Signal of the two-way antenna and the Signal-to-Noise Ratio (SNR) cannot be too large, and if the difference is too large, the receiving sensitivity of the two-way antenna after data combination is even lower than the performance of a single antenna with a good Signal only being turned on.
Noise sources causing such a phenomenon include noise in which a transmission signal falls in a reception band, that is, self-interference noise, noise resulting from deterioration of isolation indexes of a transmission terminal TX and a reception terminal RX due to aging or slight damage of a duplexer, and noise resulting from deterioration of a spectrum of an output signal due to aging or slight damage of a power amplifier of the transmission signal.
In addition, noise inputted from the outside causes a similar problem in addition to self-interference noise. At present, the requirement for miniaturization of terminal equipment is rising, in order to use the space of a printed circuit board as little as possible, the routing of radio frequency analog signals is often closer to digital signals, power supplies carrying noise or other digital or analog signal routing lines with higher power, and although the isolation among systems is made as good as possible when designing the circuit, the signals are distorted or the signal generators are aged along with the service life lengthening or under special scenes such as module high-load work, and the generation of noise interfering with a receiving frequency band is also predictable. When the interference signal level to which the receiving channel is coupled is too high, the receiving sensitivity of the channel will naturally also deteriorate.
The performance of a terminal device with the above problems can often meet the corresponding standard, but cannot reach the link budget level. The link budget level is generally calculated performance based on a thermal noise formula, hardware design link insertion loss and the like, and is performance required to be achieved by the terminal device in an actual link environment, and the link budget level is generally higher than a corresponding standard.
In view of the above problem, if only single diversity data is used, in the prior art, the DFE (digital Front End) of the main set is usually turned off. In this case, since there is no digital gain at all, the noise is more difficult to separate, the noise signal is decoded as a normal received signal, and all the obtained signals are error data, and after the noise signal is combined with the diversity decoded signal, the data which can be demodulated by diversity reception is weakened in turn, which causes error codes and easily causes a terminal to drop.
Therefore, the embodiments of the present application provide a method and an apparatus for optimizing the receiving sensitivity of a multi-antenna frequency division duplex mode terminal, which, without changing the existing hardware design of a terminal device, turn off the signal of the corresponding main set receiving path by determining the strength of the main set signal and under the condition that the main set signal is very weak and can affect the merged data, thereby effectively improving the receiving sensitivity of the terminal device and the stability of communication.
Fig. 1 is a flowchart of a method for optimizing the receiving sensitivity of a multi-antenna frequency division duplex mode terminal according to an embodiment of the present application. The method comprises the following steps:
in step 101, the terminal device detects the current signal transmission power in real time.
The current signal transmission power can be obtained according to the configuration parameters of the terminal equipment.
In step 102, if the signal transmitting power is greater than the set power threshold, the signal-to-noise ratio of the main-set single-path signal and the signal-to-noise ratio of the diversity single-path signal at the receiving end are calculated respectively.
The power threshold may be determined according to a simulation test or an empirical value, and the embodiment of the present application is not limited thereto.
The signal-to-noise ratio of the single-channel signal can be calculated by some conventional calculation methods, and the embodiment of the present application is not limited thereto.
In step 103, a main set receiving path satisfying the turn-off condition is determined according to the signal-to-noise ratio of the main set single-path signal and the signal-to-noise ratio of the diversity single-path signal.
For example, if the signal-to-noise ratio of the main set single-path signal is smaller than the minimum demodulation threshold, it is determined that the main set receiving path corresponding to the main set single-path signal satisfies the turn-off condition.
For another example, if the snr of the main set single-path signal is close to the minimum demodulation threshold, where the close minimum demodulation threshold refers to that although the snr of the main set single-path signal is not lower than the minimum demodulation threshold, the difference between the snr of the main set single-path signal and the minimum demodulation threshold is smaller than a set value, in this case, it is also considered whether the snr of the main set single-path signal is significantly smaller than the snr of the diversity single-path signal, for example, a minimum value of the snrs of the diversity single-path signals is selected, and if the snr of the main set single-path signal is smaller than the minimum value, it indicates that the useful signal of the corresponding main set path is almost completely covered by noise at this time, in this case, if the received signal of the main set path is combined with the received signal of the diversity path, the receiving sensitivity may be deteriorated, or even lower than the receiving performance of only opening the diversity path; and the signal data of the main set channel is abandoned, so that diversity received data cannot be influenced, and the problem of unstable communication in special scenes can be solved. Therefore, in this case, a signal to turn off the main set reception path may be considered; of course, in this case, the difference between the minimum value and the signal-to-noise ratio of the main set single-channel signal may also be calculated, and if the difference is greater than a set threshold, it is determined that the main set receiving path corresponding to the main set single-channel signal satisfies the turn-off condition.
It should be noted that, in practical applications, determining the main set receiving path satisfying the shutdown condition is not limited to the above-mentioned manners. According to application needs, there may be other ways, and the embodiments of the present application are not limited. In step 104, the signals of the main set receiving paths meeting the shutdown condition are shut down.
The antenna types supported by the multi-antenna frequency division duplex mode terminal described in the present application may be various, for example, but not limited to, any of the following:
one antenna is a main diversity antenna, and the other antenna is a diversity antenna;
one antenna is a main antenna set, and the other three antennas are diversity antennas;
and four antennas, wherein two antennas are main set antennas, and the other two antennas are diversity antennas.
In addition, the multi-antenna fdd mode terminal described in this application should also support at least 2 cellular communication bands, and support frequency division multiple access system communication, such as: WCDMA (Wideband Code Division Multiple Access), FDD-LTE (Frequency Division duplex-Long Term Evolution), FDD-NR (Frequency Division duplex-New Radio), and other systems.
Referring to fig. 2, fig. 2 is a schematic diagram of signal transmission and reception in a terminal device to which the method for optimizing the receiving sensitivity of a multi-antenna frequency division duplex mode terminal according to the embodiment of the present application is applied.
In this example, signal transmission and reception are based on a general terminal radio frequency circuit, and signal reception of different signal paths is controlled by a multi-way switch, that is, connection or disconnection of respective paths is controlled by the multi-way switch. The solid line in fig. 2 shows a schematic diagram of a single-band operating circuit in the terminal, and the dotted line depicts the end-to-end circuit switching result.
The control principle of the receive port main set path shutdown in the embodiment of the present application is described below with reference to fig. 3.
Referring to fig. 3, in this example, the terminal device has two antennas, one main set antenna 310 and one diversity antenna 320.
The high-frequency modulated signal transmitted by the transmission modulation module 411 is amplified by the amplifier 600, and then transmitted to the antenna 310 via the amplifier multiplexing switch 511, the duplexer 510, and the antenna switch 311.
The high frequency modulated signal received from the main set antenna 310 is transmitted to the main set reception demodulation module 412 via the main set antenna switch 311, the duplexer 510, and the main set reception multiplexing switch 512.
The high-frequency modulated signal received from the diversity antenna 320 is transmitted to the diversity reception demodulation module via the diversity antenna switch 523, the reception filter 520, and the diversity reception multiplexing switch 521.
The main set reception multiplexing switch 512 and the diversity reception multiplexing switch 521 are used to connect the corresponding reception ports to the main set antenna 310 and the diversity antenna 320, respectively, that is, to connect the corresponding paths to receive signals from the main set antenna and the diversity antenna. If the signal-to-noise ratio of a certain master set single channel is very low, the connection between the receiving port and the corresponding master set single channel can be disconnected through the master set receiving multiplexing switch 512.
Generally, the receiving end needs to receive signals from which ports are determined by the corresponding port configuration list, and different receiving paths may be configured for different frequency bands. The port configuration list is stored in a port configuration register, and is read after the terminal equipment is started up, and the master set antenna connected with the receiving end is controlled according to the port configuration list.
Accordingly, in step 104, the purpose of turning off the signal of the master set receiving path satisfying the turn-off condition can be achieved by rewriting the configuration parameters of the master set receiving path satisfying the turn-off condition in the port configuration list. Because each frequency band has only one path, and the paths of different frequency bands cannot be shared, in actual control, the main set receiving path can be changed from the current working frequency band to the corresponding other working frequency bands, so as to shut down the main set receiving path, obtain a new port configuration list after correspondingly modifying the configuration parameters of the main set receiving path, and control the main set antenna connected with the receiving end according to the new port configuration list.
It should be noted that, in a specific application, after modifying the port configuration list each time to obtain a new port configuration list and writing the new port configuration list into a corresponding port configuration register, it is necessary to trigger a port configuration operation, that is, read the configuration register, and receive a receiving signal of the master set path connected to the receiving port according to the new port configuration list.
Fig. 4 is another flowchart of a method for optimizing the receiving sensitivity of a multi-antenna frequency division duplex mode terminal according to the embodiment of the present application.
In step 401, after the terminal device is powered on, the port configuration list is read, and the master set antenna connected to the receiving end is controlled according to the port configuration list.
In step 402, the current signal transmit power is detected in real time.
In step 403, determining whether the signal transmission power is greater than a set power threshold; if so, go to step 404; otherwise, step 407 is executed.
In step 404, the signal-to-noise ratio of the main-set single-path signal and the signal-to-noise ratio of the diversity single-path signal at the receiving end are calculated respectively.
In step 405, a main set receiving path satisfying the turn-off condition is determined according to the signal-to-noise ratio of the main set single-path signal and the signal-to-noise ratio of the diversity single-path signal.
In step 406, the configuration parameters of the master set receiving path that satisfy the shutdown condition in the port configuration list are rewritten to obtain a new port configuration list, and the master set antenna connected to the receiving end is controlled according to the new port configuration list.
In step 407, the port configuration list is restored or maintained.
If the original port configuration list is rewritten, the original port configuration list needs to be restored, and then step 401 is executed; if not, the port configuration list is kept, in which case, it is not necessary to return to step 401, but return to step 402, and the current signal transmission power is continuously detected.
The method for optimizing the receiving sensitivity of the terminal in the multi-antenna frequency division duplex mode can be used for measuring the noise intensity of an FDD radio frequency channel, except self-interference, and can distinguish other interference from the self-interference so as to improve the research and development design quality of a terminal product. Moreover, the method can be used under the condition of a real network, the influence of a self-interference phenomenon on normal communication of the terminal equipment can be reduced, the communication quality is improved, and especially the performance of the terminal equipment can be effectively improved when the terminal equipment is in a weak signal environment.
Correspondingly, the embodiment of the present application further provides a device for optimizing the receiving sensitivity of a multi-antenna frequency division duplex mode terminal, as shown in fig. 5, which is a schematic structural diagram of the device.
In this embodiment, the apparatus 500 for optimizing the receiving sensitivity of the multi-antenna fdd mode terminal includes the following modules:
a power detection module 51, configured to detect the current signal transmission power in real time;
the signal-to-noise ratio calculation module 52 is configured to calculate a signal-to-noise ratio of the main-set single-path signal and a signal-to-noise ratio of the diversity single-path signal at the receiving end respectively when the signal transmission power is greater than a set power threshold;
a judging module 53, configured to determine a main set receiving path that meets a turn-off condition according to the signal-to-noise ratio of the main set single-path signal and the signal-to-noise ratio of the diversity single-path signal;
and a control module 54, configured to turn off the signal of the main set receiving path satisfying the turn-off condition.
In a specific application, the determining module 53 may determine the main set receiving path satisfying the turn-off condition in a plurality of ways, and specifically refer to the description in the foregoing embodiment of the method for optimizing the receiving sensitivity of the multi-antenna fdd mode terminal in the present application, which is not described herein again.
Fig. 6 is a schematic view of another structure of the apparatus for optimizing the receiving sensitivity of a multi-antenna frequency division duplex mode terminal according to the embodiment of the present application.
Unlike the embodiment shown in fig. 5, in this embodiment, the apparatus 500 further includes: the configuration module 55 is configured to read the port configuration list after the device is powered on, and control the main set antenna connected to the receiving end according to the port configuration list.
Accordingly, in this embodiment, the control module 54 is specifically configured to rewrite the configuration parameters of the main set receiving path that satisfies the shutdown condition in the port configuration list, so as to obtain a new port configuration list.
Accordingly, in this embodiment, the configuration module 55 is further configured to control a main set antenna connected to the receiving end according to the new port configuration list.
Further, in another non-limiting embodiment of the apparatus for optimizing receiving sensitivity of a multi-antenna frequency division duplex mode terminal according to the present application, the control module 54 may further recover or maintain the port configuration list when the signal transmission power is less than or equal to a set power threshold.
For the specific implementation of each module in the apparatus for optimizing the receiving sensitivity of a multi-antenna fdd mode terminal, reference may be made to the description in the foregoing embodiment of the method of the present application, and details are not repeated here.
According to the method and the device for optimizing the receiving sensitivity of the multi-antenna frequency division duplex mode terminal, under the condition that the signal transmitting power is larger than the set power threshold value, in order to avoid the influence of self-interference noise generated by a main set antenna channel on the signal receiving sensitivity, the strength of a main set single-path signal is judged, and under the condition that the main set signal is extremely weak and can influence combined data, the signal of a corresponding main set receiving path is turned off, so that the receiving sensitivity of the terminal equipment is optimized, namely, in the actual use process of the terminal, the analytic signal is not close to the sensitivity, and therefore the communication stability of the terminal equipment is improved.
Tests show that by using the scheme of the application, the receiving sensitivity of the terminal equipment can be optimized by 2-3 dB, the error rate is reduced by 50% under the limiting condition, and the communication stability can be greatly improved.
By using the method and the device for optimizing the receiving sensitivity of the multi-antenna frequency division duplex mode terminal, the effect can be achieved under the condition that the existing hardware design of the terminal equipment is not changed.
The scheme provided by the embodiment of the application can be applied to mobile communication terminal equipment, such as products of mobile phones, smart watches and the like, and can assist in noise analysis and performance test of each antenna in the research and development design stage.
Correspondingly, the embodiment of the application also provides a multi-antenna frequency division duplex mode terminal device, which comprises the receiving sensitivity optimizing device.
The terminal in the embodiments of the present application, which may also be referred to as a terminal device, may refer to various types of terminal devices, such as a user equipment, an access terminal, a subscriber unit, a subscriber Station, a Mobile Station (MS), a remote Station, a remote terminal, a Mobile device, a user terminal, a wireless communication device, a user agent, or a user equipment. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), a handheld device with Wireless communication function, a computing device or other processing device connected to a Wireless modem, a vehicle-mounted device, a wearable device, a terminal device in a future 5G Network or a terminal device in a future evolved Public Land Mobile Network (PLMN), and the like, which are not limited in this embodiment.
In a specific implementation, the apparatus for optimizing the receiving sensitivity of the multi-antenna fdd mode terminal may correspond to a Chip with a corresponding function in a network device and/or a terminal device, such as a System-On-a-Chip (SOC), a baseband Chip, a Chip module, and the like.
In a specific implementation, each module/unit included in each apparatus and product described in the foregoing embodiments may be a software module/unit, may also be a hardware module/unit, or may also be a part of a software module/unit and a part of a hardware module/unit.
For example, for each device or product applied to or integrated into a chip, each module/unit included in the device or product may be implemented by hardware such as a circuit, or at least a part of the module/unit may be implemented by a software program running on a processor integrated within the chip, and the rest (if any) part of the module/unit may be implemented by hardware such as a circuit; for each device or product applied to or integrated with the chip module, each module/unit included in the device or product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components of the chip module, or at least some of the modules/units may be implemented by using a software program running on a processor integrated within the chip module, and the rest (if any) of the modules/units may be implemented by using hardware such as a circuit; for each device and product applied to or integrated in the terminal, each module/unit included in the device and product may be implemented by using hardware such as a circuit, and different modules/units may be located in the same component (e.g., a chip, a circuit module, etc.) or different components in the terminal, or at least part of the modules/units may be implemented by using a software program running on a processor integrated in the terminal, and the rest (if any) part of the modules/units may be implemented by using hardware such as a circuit.
The present application further provides a computer-readable storage medium, which is a non-volatile storage medium or a non-transitory storage medium, and has a computer program stored thereon, where the computer program is executed by a processor to perform the steps in the above-mentioned method embodiments.
The embodiment of the application also provides a device for optimizing the receiving sensitivity of the multi-antenna frequency division duplex mode terminal, which comprises a memory and a processor, wherein the memory is stored with a computer program capable of running on the processor, and the processor executes the steps in the method embodiments when running the computer program.
It should be understood that the term "and/or" herein is merely one type of association relationship that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" in this document indicates that the former and latter related objects are in an "or" relationship.
The "plurality" appearing in the embodiments of the present application means two or more.
The descriptions of the first, second, etc. appearing in the embodiments of the present application are only for illustrating and differentiating the objects, and do not represent the order or the particular limitation of the number of the devices in the embodiments of the present application, and do not constitute any limitation to the embodiments of the present application.
Embodiments provided herein may be implemented, in whole or in part, by software, hardware, firmware, or any combination thereof. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. The procedures or functions according to the embodiments of the present application are wholly or partially generated when the computer instructions or the computer program are loaded or executed on a computer. The computer may be a general purpose computer, a special purpose computer, a network of computers, or other programmable device. The computer instructions may be stored in a computer readable storage medium or transmitted from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions may be transmitted from one website, computer, server, or data center to another website, computer, server, or data center by wire or wirelessly. It should be understood that, in the various embodiments of the present application, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments of the present application.
In the several embodiments provided in the present application, it should be understood that the disclosed method, apparatus and system may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative; for example, the division of the unit is only a logic function division, and there may be another division manner in actual implementation; for example, various elements or components may be combined or may be integrated in another system or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.
Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may be physically arranged separately, or two or more units may be integrated into one unit. The integrated unit can be realized in a form of hardware, or in a form of hardware plus a software functional unit.
Although the present application is disclosed above, the present application is not limited thereto. Various changes and modifications may be effected therein by one of ordinary skill in the pertinent art without departing from the scope or spirit of the present disclosure, and it is intended that the scope of the present disclosure be defined by the appended claims.

Claims (14)

1. A method for optimizing receiving sensitivity of a multi-antenna frequency division duplex mode terminal is characterized by comprising the following steps:
detecting the current signal transmitting power in real time;
if the signal transmitting power is larger than a set power threshold value, respectively calculating the signal-to-noise ratio of each main set single-path signal and the signal-to-noise ratio of each diversity single-path signal of the receiving end;
determining a main set receiving path meeting a turn-off condition according to the signal-to-noise ratio of the main set single-path signal and the signal-to-noise ratio of each diversity single-path signal;
and turning off the signals of the main set receiving paths meeting the turning-off condition.
2. The method of claim 1, wherein determining the primary set receiving path that satisfies the turn-off condition according to the snr of the primary set single channel signal and the snrs of the diversity single channel signals comprises:
and if the signal-to-noise ratio of the main set single-path signal is smaller than the minimum demodulation threshold, determining that a main set receiving path corresponding to the main set single-path signal meets a turn-off condition.
3. The method of claim 1, wherein determining the primary set receiving path that satisfies the turn-off condition according to the snr of the primary set single channel signal and the snrs of the diversity single channel signals comprises:
if the signal-to-noise ratio of the main diversity single-path signal is close to the minimum demodulation threshold, determining the minimum value of the signal-to-noise ratios of the diversity single-path signals;
if the signal-to-noise ratio of the main set single-path signal is smaller than the minimum value, calculating the difference value between the minimum value and the signal-to-noise ratio of the main set single-path signal; and if the difference is larger than a set threshold, determining that a main set receiving path corresponding to the main set single-path signal meets a turn-off condition.
4. The method of claim 1, further comprising:
reading a port configuration list after starting up, and controlling a main set antenna connected with a receiving end according to the port configuration list;
the signal for turning off the main set receiving path satisfying the turn-off condition comprises:
and rewriting the configuration parameters of the master set receiving access meeting the turn-off condition in the port configuration list to obtain a new port configuration list, and controlling a master set antenna connected with a receiving end according to the new port configuration list.
5. The method according to claim 1, wherein the antenna of the multi-antenna frequency division duplex mode terminal comprises any one of:
one antenna is a main diversity antenna, and the other antenna is a diversity antenna;
one antenna is a main set antenna, and the other three antennas are diversity antennas;
and four antennas, wherein two antennas are main set antennas, and the other two antennas are diversity antennas.
6. The method of claim 4, further comprising:
and if the signal transmission power is less than or equal to a set power threshold value, restoring or maintaining the port configuration list.
7. An apparatus for optimizing receiving sensitivity of a multi-antenna frequency division duplex mode terminal, the apparatus comprising:
the power detection module is used for detecting the current signal transmitting power in real time;
the signal-to-noise ratio calculation module is used for respectively calculating the signal-to-noise ratio of each main set single-path signal and the signal-to-noise ratio of each diversity single-path signal at the receiving end under the condition that the signal transmitting power is larger than a set power threshold value;
the judging module is used for determining a main set receiving channel meeting the turn-off condition according to the signal-to-noise ratio of the main set single-channel signal and the signal-to-noise ratio of each diversity single-channel signal;
and the control module is used for turning off the signals of the main set receiving paths meeting the turning-off condition.
8. The apparatus of claim 7,
the determining module is specifically configured to determine that a main set receiving path corresponding to the main set single-path signal satisfies a turn-off condition when the signal-to-noise ratio of the main set single-path signal is smaller than a minimum value of the signal-to-noise ratios of the diversity single-path signals.
9. The apparatus of claim 7, further comprising:
the configuration module is used for reading a port configuration list after starting up and controlling a main set antenna connected with a receiving end according to the port configuration list;
the control module is specifically configured to rewrite configuration parameters of a main set receiving path that meets a shutdown condition in the port configuration list to obtain a new port configuration list;
and the configuration module is also used for controlling a main set antenna connected with the receiving end according to the new port configuration list.
10. The apparatus of claim 7, wherein the antenna of the multi-antenna frequency division duplex mode terminal comprises any one of:
one antenna is a main diversity antenna, and the other antenna is a diversity antenna;
one antenna is a main set antenna, and the other three antennas are diversity antennas;
and four antennas, wherein two antennas are main set antennas, and the other two antennas are diversity antennas.
11. The apparatus of claim 9,
the control module is further configured to restore or maintain the port configuration list when the signal transmission power is less than or equal to a set power threshold.
12. A multi-antenna frequency division duplex mode terminal device, characterized in that it comprises a reception sensitivity optimization apparatus according to any of claims 7 to 11.
13. A computer-readable storage medium, being a non-volatile storage medium or a non-transitory storage medium, having a computer program stored thereon, which, when executed by a processor, causes the method of any of claims 1 to 6 to be performed.
14. An apparatus for optimizing receive sensitivity of a multi-antenna frequency division duplex mode terminal device, comprising a memory and a processor, the memory having stored thereon a computer program operable on the processor, wherein the processor, when executing the computer program, causes the method of any of claims 1 to 6 to be performed.
CN202210356989.4A 2022-04-06 2022-04-06 Multi-antenna frequency division duplex mode terminal receiving sensitivity optimization method and device and terminal equipment Active CN114531173B (en)

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CN109743443A (en) * 2018-12-19 2019-05-10 努比亚技术有限公司 A kind of terminal control method, terminal and computer readable storage medium
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CN107645327A (en) * 2017-08-30 2018-01-30 努比亚技术有限公司 Multiple antennas management method, multi-antenna terminal and computer-readable recording medium
CN107994930A (en) * 2017-11-24 2018-05-04 上海与德科技有限公司 Antenna switching system and mobile terminal
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