CN112702079B - Radio frequency system, signal transmission method and terminal equipment - Google Patents
Radio frequency system, signal transmission method and terminal equipment Download PDFInfo
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- CN112702079B CN112702079B CN202011551876.7A CN202011551876A CN112702079B CN 112702079 B CN112702079 B CN 112702079B CN 202011551876 A CN202011551876 A CN 202011551876A CN 112702079 B CN112702079 B CN 112702079B
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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
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- H04B1/401—Circuits for selecting or indicating operating mode
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- 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
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- 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
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Abstract
The application discloses a radio frequency system, a signal transmission method and terminal equipment, and belongs to the field of communication. The radio frequency system comprises a first radio frequency transceiver, a second radio frequency transceiver, a first radio frequency front end circuit and a second radio frequency front end circuit, wherein the first radio frequency transceiver is electrically connected with the second radio frequency transceiver, the first radio frequency front end circuit comprises at least one first radio frequency module, the second radio frequency front end circuit comprises at least one second radio frequency module, each first radio frequency module is connected with an antenna, used for executing the receiving and sending of the first radio frequency signal, each second radio frequency module is connected with an antenna, used for executing the receiving and sending of the second radio frequency signal, each first radio frequency module and each second radio frequency module are respectively and electrically connected with a second radio frequency transceiver, the second radio frequency transceiver is used for transmitting power based on the first radio frequency signal, and the isolation among the antennas controls the working mode of each second radio frequency module, so that the performance sacrifice and the function defect can be avoided while avoiding interference.
Description
Technical Field
The application belongs to the technical field of communication, and particularly relates to a radio frequency system, a signal transmission method and terminal equipment.
Background
At present, the frequency of the newly added N79 frequency band of the fifth generation mobile communication technology (abbreviated as 5G) is 4400MHz to 5000MHz, and the WiFi (Wireless-Fidelity) frequency bands mainly comprise 2.402GHz to 2.482GHz and 5150MHz to 5850MHz (abbreviated as WiFi 5G hereinafter).
For the mobile terminal with the functions of N79 and WiFi 5G, because the frequency bands used by the two are close, when the N79 and the WiFi-5G work simultaneously, if evasive measures are not taken, signals of the two will interfere with each other, and even device failure can be caused under severe conditions.
At present, mutual exclusion schemes are generally adopted by the industry to avoid the interference problem. The mutual exclusion scheme means that N79 and WiFi 5G cannot coexist under certain conditions, namely, the WiFi 5G Tx power is larger than a set threshold value P NR_TH Then the protection is turned off for N79 Rx; otherwise, the N79 Tx power is larger than the set threshold value P W_TH And turning off the WiFi 5G Rx.
FIG. 1 shows a circuit design for avoiding mutual interference between WiFi 5G and N79 in the prior art, as shown in FIG. 1, for the case that the WiFi 5G circuit is protected by N79 emission, the emission power is greater than P at N79 W_TH Under the condition of (1), the SDR _ GRFC2_ WLAN _ LAA _ TX _ EN is pulled up, and the WLAN transceiver controls the level state of an LNA _ EN interface according to the level state of the SDR _ GRFC2_ WLAN _ LAA _ TX _ EN, so that 2 paths of LNAs of WiFi 5G enter a protection state at the same time;
for the case of WiFi 5G transmission protecting the N79 circuit, the transmission power is greater than P in WiFi 5G NR_TH Under the condition of (3), the control interface WL _ XFEM _ CTRL _ WL _ TXEN _ GPIO is pulled high, and the 4-way LNA of the N79 enters a protection state (disable) at the same time.
In the process of implementing the present application, the inventors find that the mutual exclusion scheme in the prior art has at least the following problems:
the N79 circuit totally 4 antennas correspond to 4 Rx routes, the WiFi 5G circuit totally 2 antennas correspond to 2 Rx routes, the data difference of the antenna isolation degree between every two circuits is large, all the routes of one party are protected by adopting a uniform threshold value, the performance of the route with high isolation degree is sacrificed, meanwhile, all the routes of one party enter a protection state (high isolation mode), the connection range is limited, the normal function is influenced, and the function defect is caused.
Disclosure of Invention
An object of the embodiments of the present application is to provide a radio frequency system, a signal transmission method, and a terminal device, so as to solve the problems of performance sacrifice and function defects caused by the existing interference avoidance mechanism.
In order to solve the technical problem, the present application is implemented as follows:
in a first aspect, an embodiment of the present application provides a radio frequency system, including:
the system comprises a first radio frequency transceiver, a second radio frequency transceiver, a first radio frequency front end circuit and a second radio frequency front end circuit;
wherein the first radio frequency transceiver is electrically connected with a second radio frequency transceiver;
the first radio frequency front-end circuit comprises at least one first radio frequency module, the second radio frequency front-end circuit comprises at least one second radio frequency module, and each first radio frequency module is connected with one antenna and used for executing transceiving of first radio frequency signals; each second radio frequency module is connected with one antenna and used for executing the transceiving of second radio frequency signals;
each first radio frequency module is electrically connected with the second radio frequency transceiver, and each second radio frequency module is also electrically connected with the second radio frequency transceiver;
the second radio frequency transceiver is used for controlling the working mode of each second radio frequency module based on the transmitting power of the first radio frequency signal and the isolation between the antennas.
In a second aspect, an embodiment of the present application provides a method for signal transmission based on the radio frequency system in the first aspect, where the method includes:
under the condition that a first radio frequency signal is sent based on the first radio frequency front-end circuit, and the channel interval between the first radio frequency front-end circuit and the second radio frequency front-end circuit meets a preset requirement, determining a first radio frequency module and a corresponding first target antenna which are selected for sending the first radio frequency signal, and the transmitting power of the first radio frequency signal;
determining a difference value between the transmitting power and each isolation degree based on the isolation degree of each antenna in the first target antenna and the second radio frequency front end circuit;
determining a target isolation degree corresponding to the target difference value and a second target antenna corresponding to the target isolation degree under the condition that a target difference value larger than a second threshold value exists in the difference values of the transmitting power and the isolation degrees; the second target antenna is an antenna in the second radio frequency front-end circuit;
determining a second radio frequency module corresponding to the second target antenna, and controlling a receiving channel of the second radio frequency module to be in a high isolation mode; the second threshold value is a reception protection threshold of the second radio frequency module.
In a third aspect, an embodiment of the present application provides a terminal device, where the terminal device includes the radio frequency system according to the first aspect.
According to the radio frequency system, the signal transmission method and the terminal device, the working mode of each second radio frequency module is controlled based on the transmitting power of the first radio frequency signal and the isolation between the antennas, so that performance sacrifice and functional defects can be avoided while interference is effectively avoided, and the communication rate and the communication capacity are improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic circuit diagram of a prior art circuit for avoiding interference between WiFi 5G and N79;
fig. 2 is a schematic structural diagram of a radio frequency system according to an embodiment of the present application;
fig. 3 is a schematic structural diagram of a radio frequency system formed by WiFi 5G and N79 provided in the embodiment of the present application;
fig. 4 is a schematic flowchart of a signal transmission method according to an embodiment of the present application;
fig. 5 is a schematic flowchart of protecting a WiFi 5G rf front end by N79 transmission according to an embodiment of the present application;
fig. 6 is a schematic flowchart of the WiFi 5G transmission to protect the N79 rf front end according to the embodiment of the present application;
FIG. 7 is a schematic diagram of a channel spacing provided by an embodiment of the present application;
fig. 8 is a schematic view of a scenario that needs to be protected based on a channel interval according to an embodiment of the present application;
fig. 9 is a schematic structural diagram of a terminal device according to an embodiment of the present application.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms first, second and the like in the description and in the claims of the present application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or described herein.
It should be appreciated that reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
In various embodiments of the present application, it should be understood that the sequence numbers of the following 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 addition, "and/or" in the specification and claims means at least one of connected objects, a character "/", and generally means that the former and latter related objects are in an "or" relationship.
The radio frequency system, the signal transmission method, and the terminal device provided in the embodiments of the present application are described in detail below with reference to the accompanying drawings through specific embodiments and application scenarios thereof.
Fig. 2 is a schematic structural diagram of a radio frequency system according to an embodiment of the present application. As shown in fig. 2, the radio frequency system includes:
a first radio frequency transceiver 201, a second radio frequency transceiver 202, a first radio frequency front-end circuit 203 and a second radio frequency front-end circuit 204;
wherein the first radio frequency transceiver 201 is electrically connected with the second radio frequency transceiver 202;
the first rf front-end circuit 203 includes at least one first rf module 2031, the second rf front-end circuit 204 includes at least one second rf module 2041, each first rf module 2031 is connected to an antenna for performing transceiving of a first rf signal, and each second rf module 2041 is connected to an antenna for performing transceiving of a second rf signal;
each of the first rf modules 2031 is electrically connected to the second rf transceiver 202, and each of the second rf modules 2041 is also electrically connected to the second rf transceiver 202;
the second radio frequency transceiver 202 is configured to control an operating mode of each second radio frequency module 2041 based on the transmission power of the first radio frequency signal and the isolation between the antennas.
Specifically, the first radio frequency signal and the second radio frequency signal are high-frequency radio frequency signals, and the isolation between the antennas is the isolation between the antenna connected to each first radio frequency module 2031 and the antenna connected to each second radio frequency module 2041.
When the first rf front-end circuit 203 and the second rf front-end circuit 204 operate simultaneously, signals of the first rf front-end circuit 203 and the second rf front-end circuit 204 interfere with each other, when a first rf module 2031 in the first rf front-end circuit 203 transmits a first signal, an interference signal power that a second rf module 2041 in the second rf front-end circuit 204 can receive depends on a transmission power of the first signal and an isolation between an antenna connected to the first rf module 2031 and an antenna connected to the second rf module 2041, and when the interference signal power received by the second rf module 2041 is greater than a hardware bearing capacity thereof, the second rf module 2041 needs to be protected; the same applies to the case when the second rf module 2041 in the second rf front-end circuit 204 transmits the second signal. Accordingly, the first rf module 2031 and the second rf module 2041 need to be protected by the second rf transceiver 202.
In an actual working process, the second rf transceiver 202 receives the transmission power of the first rf signal from the first rf transceiver 201 electrically connected thereto, and controls the working mode of each second rf module 2041 electrically connected thereto based on the transmission power of the first rf signal and the isolation between the antenna corresponding to each first rf module 2031 and the antenna corresponding to each second rf module 2041, so as to protect each second rf module 2041; the protection mechanism for each first rf module 2031 is similar to the above-mentioned situation, except that the transmission power of the second rf signal is obtained by the second rf transceiver 202 itself, and the specific content of the protection mechanism is not described herein again. It should be noted that the first rf front-end circuit and the second rf front-end circuit are only used for convenience to describe two different rf front-end circuits, and in an actual application scenario, the two corresponding rf front-end circuits may be replaced with each other.
The radio frequency system provided by the embodiment of the application controls the working mode of each second radio frequency module based on the transmitting power of the first radio frequency signal and the isolation between the antennas, can avoid performance sacrifice and functional defects while effectively avoiding interference, and improves the communication rate and the communication capacity.
Based on the above embodiment, the first rf module and the second rf module are:
a signal transceiving unit, or a signal receiving unit.
Specifically, the types and the numbers of the rf modules corresponding to different rf front-end circuits are different. The types of the radio frequency modules include a signal transceiving unit, a signal receiving unit, and a signal sending unit, and in practical application, the types and the number of the radio frequency modules may be freely set according to the types of the radio frequency front end circuits, which is not specifically limited in this embodiment of the present application.
The radio frequency system provided by the embodiment of the application can adjust the type and the number of the radio frequency modules according to the type of the radio frequency front end circuit, can be applied to the coexistence scene of different types of radio frequency front end circuits, avoids performance sacrifice and function defects while effectively avoiding interference, and improves the communication speed and the communication capacity.
Based on the above embodiment, the first rf transceiver is an NR transceiver, the second rf transceiver is a WiFi transceiver, the first rf front-end circuit is an N79 rf front-end, and the second rf front-end circuit is a WiFi 5G rf front-end.
Specifically, as shown in fig. 3, the structure of a radio frequency system composed of WiFi 5G and N79 provided in this embodiment of the present application is schematically illustrated, and as shown in fig. 3, the first radio frequency transceiver is an NR transceiver, the second radio frequency transceiver is a WiFi transceiver, the first radio frequency front end circuit is an N79 radio frequency front end, the second radio frequency front end circuit is a WiFi 5G radio frequency front end, the first radio frequency front end circuit (N79 radio frequency front end) includes four first radio frequency modules, two of which are signal transceiver units, and the other two of which are signal receiving units, and further includes antennas N1-N4 connected to each first radio frequency module, and the second radio frequency front end circuit (WiFi 5G radio frequency front end) includes two second radio frequency modules, both of which are signal transceiver units, and further includes antennas W1 and W2 connected to each second radio frequency module.
The NR transceiver is responsible for transmitting and receiving NR signals, the WiFi transceiver is responsible for transmitting and receiving WiFi 5G signals, the N79 RF front end and the WiFi 5G RF front end are respectively matched with the NR transceiver and the WiFi transceiver to realize the transmitting and receiving functions of NR signals and WiFi signals, and a control interface NR _ TX _ EN is arranged between the NR transceiver and the WiFi transceiver and used for identifying an NR Tx Power state (namely first signal Power), for example, when the Tx Power of N79 is greater than a Power threshold P NR_TH The NR transceiver changes the level state of the control interface, telling the WiFi transceiver that the transmit power of N79 has exceeded a set threshold at this time.
A control interface is respectively arranged between the WiFi transceiver and the second radio frequency modules of the two paths of WiFi 5G radio frequency front ends, and is used for realizing the control of the WiFi transceiver on the working mode of a signal receiving and transmitting unit of the WiFi 5G radio frequency front end, namely when a certain path of radio frequency front end device needs to be protected, the corresponding control interface changes the level state of the control interface; the WiFi transceiver and the four first radio frequency modules at the front end of the N79 radio frequency respectively have a control interface, NR _ LNA _ EN0/1/2/3, and are used for controlling the working modes of the two signal transceiving units and the two signal receiving units at the front end of the N79 radio frequency, namely when a certain path of radio frequency front end device needs to be protected, the corresponding control interface changes the level state of the control interface;
each second radio frequency module consists of four parts, namely a PA, an LNA, a switch and a band-pass filter, wherein the PA is used for amplifying WiFi 5G transmitting signals, the LNA is used for amplifying receiving signals, the switch is used for switching the paths of the transmitting and receiving signals, and the filter is used for filtering useless signals out of the WiFi 5G band; the N79 rf front end includes two transceiving common modules (i.e., signal transceiving units) and two pure receiving modules (i.e., signal receiving units), implementing the capability of N792T 4R. The signal transceiving unit of the N79 radio frequency front end is similar to the signal transceiving unit of the WiFi 5G radio frequency front end and comprises a PA, an LNA, a switch and a band-pass filter, while the signal receiving unit only has the LNA and the filter part.
It can be understood that the radio frequency system of the present application may be applied to any two coexistence scenarios of radio frequency front-end circuits with similar frequency bands, except for a coexistence scenario of WiFi 5G and N79, may also be applied to a coexistence scenario of N41 and WiFi 2.4G, a coexistence scenario of N79 and WiFi 6G, and the like, which is not specifically limited in this embodiment of the present application.
In the radio frequency system provided by the embodiment of the application, the first radio frequency transceiver is the NR transceiver, the second radio frequency transceiver is the WiFi transceiver, the first radio frequency front end circuit is the N79 radio frequency front end, the second radio frequency front end circuit is the WiFi 5G radio frequency front end, interference avoidance during simultaneous working of N79 and WiFi 5G can be realized, performance sacrifice and functional defect are avoided, and communication rate and communication capacity are improved.
For ease of understanding, the signal transmission method of the present application is described below in conjunction with the coexistence scenario of WiFi 5G and N79. Fig. 4 is a schematic flow chart of a signal transmission method provided in the embodiment of the present application, where the method includes:
Specifically, for the coexistence scenario of WiFi 5G and N79, only the frequency interval between the N79 high channel and the WiFi 5G low channel is not enough, the isolation of the hardware is small, and the reception path needs to be protected, but the reception path does not need to be protected in other situations. Therefore, when the first rf front-end circuit and the second rf front-end circuit operate, it is necessary to determine whether a channel interval between the first rf front-end circuit and the second rf front-end circuit meets a preset requirement, and only when the preset requirement is met (i.e., a receiving path needs to be protected), when sending a first rf signal based on the first rf front-end circuit, determine to send a first rf module and a corresponding first target antenna selected by the first rf signal, and transmit power of the first rf signal, so as to determine whether to start protection and protect the receiving path of which second rf module in a subsequent process.
Specifically, based on the isolation between the first target antenna and each of the second rf front-end circuits, a difference between the transmission power and each of the isolation is determined, so as to determine whether the power of the interference signal received by each of the second rf front-end circuits exceeds a reception protection threshold.
Specifically, when the difference between the transmission power and a certain isolation is determined to be greater than the second threshold (i.e., the reception protection threshold of the second rf module), it is determined that the second rf module corresponding to the difference (i.e., the target difference) needs to be protected. Therefore, the target isolation corresponding to the target difference is determined, and then the second target antenna corresponding to the target isolation is determined, so that the second radio frequency module needing to be protected can be determined.
Specifically, the second radio frequency module connected with the second target antenna can be determined according to the second target antenna, and then the receiving path of the second radio frequency module is controlled to be in a high isolation mode so as to be protected.
Under the condition that the channel interval between the first radio frequency front-end circuit and the second radio frequency front-end circuit meets the preset requirement, protecting a second radio frequency module corresponding to the second radio frequency front-end circuit when the first radio frequency front-end circuit sends a first radio frequency signal: firstly, determining a first radio frequency module selected for sending the first radio frequency signal, a corresponding first target antenna and the transmitting power of the first radio frequency signal, determining the difference between the transmitting power and each isolation degree based on the isolation degree of each antenna in the first target antenna and a second radio frequency front-end circuit, determining the target isolation degree corresponding to the target difference value and a second target antenna corresponding to the target isolation degree under the condition that a target difference value larger than a second threshold value exists in the difference value between the transmitting power and each isolation degree, determining a second radio frequency module corresponding to the second target antenna, and controlling the receiving path of the second radio frequency module to be in a high isolation mode; for the case that the second rf front-end circuit protects the first rf module corresponding to the first rf front-end circuit when sending the second rf signal, the process is similar to the above case, and is not repeated herein.
For the coexistence scenario of WiFi 5G and N79, the isolation of the W1 antenna and the N1/2/3/4 antenna is I 11 、I 12 、I 13 、I 14 By analogy, the separation between the W2 antenna and the N1/2/3/4 antenna is represented by I 11 、I 12 、I 13 、I 14 Representing that the isolation data is based on hardware designThe determined, i.e. designed, isolation is used as known data. N79 transmit power denoted P NR (i.e., the transmit power of the first radio frequency signal), the transmit power of WiFi 5G is denoted as P W (i.e., the transmission power of the second radio frequency signal), the second threshold value is denoted as P W_TH The first threshold value is denoted as P NR_TH 。
Fig. 5 is a schematic flow chart illustrating that N79 transmits to protect a WiFi 5G rf front end according to the embodiment of the present application, as shown in fig. 5:
since N79 is 2T4R, there are two antennas with N79 Tx signal, assuming Tx is at N1 and N2, so it is only necessary to calculate whether the power levels from N1 and N2 to W1 and W2 respectively reach the protection threshold. For Rx protection thresholds of two WiFi 5G radio frequency front ends, considering that hardware is completely consistent, P is assumed W_TH 。
When P is present NR -I 11 ＞P W_TH Or P NR -I 12 ＞P W_TH One of the signals meets the condition, the WiFi transceiver controls the LNA _ EN _ CH0 to be pulled high (enabled by low level), so that a W1 receiving path is in a high isolation mode, and the aim of protecting the LNA is fulfilled;
when P is present NR -I 21 ＞P W_TH Or P NR -I 22 ＞P W_TH One of the conditions is met, and the WiFi transceiver controls the LNA _ EN _ CH1 to be pulled high (low level is enabled), so that the W2 receiving path is in a high isolation mode, thereby achieving the purpose of protecting the LNA.
Fig. 6 is a schematic flow chart illustrating that WiFi 5G transmits to protect an N79 rf front end according to the embodiment of the present application, as shown in fig. 6:
since N79 is 2T2R, there are WiFi 5G Tx signals on both antennas, so it is necessary to calculate the power reaching N1/2/3/4 antennas respectively and determine whether the protection threshold is reached. For the Rx protection threshold of the 4-way N79 rf front end, it is assumed that P is identical in hardware NR_TH 。
For the protection logic of the N1 path, when P W -I 11 ＞P NR_TH Or P W -I 21 ＞P NR_TH One of the signals meets the condition, the WiFi transceiver controls GRFC _ IN0 to be pulled high (low level is enabled), so that an N1 receiving path is IN a high isolation mode, and the purpose of protecting the LNA is achieved;
similarly, the protection logic for the other N2/3/4 paths is similar, taking N2 as an example, when P is W -I 12 ＞P NR_TH Or P W -I 22 ＞P NR_TH One of the conditions is met, the WiFi transceiver controls GRFC _ IN0 to be pulled high (low level is enabled), so that the N2 receiving path is IN a high isolation mode, thereby achieving the purpose of protecting the LNA.
The signal transmission method provided by the embodiment of the application determines the difference between the transmitting power and each isolation degree based on the isolation degree of each antenna in the first target antenna and the second radio frequency front end circuit, determines the target isolation degree corresponding to the target difference value and the second target antenna corresponding to the target isolation degree under the condition that the target difference value larger than a second threshold exists in the difference between the transmitting power and each isolation degree, determines the second radio frequency module corresponding to the second target antenna, and controls a receiving passage of the second radio frequency module to be in a high isolation mode, so that performance sacrifice and functional defects can be avoided while interference is effectively avoided, and the communication rate and the communication capacity are improved.
Based on the above embodiment, before determining the first rf module and the corresponding first target antenna selected for sending the first rf signal, and the transmission power of the first rf signal, the method further includes:
and determining whether the channel interval of the first radio-frequency front-end circuit and the second radio-frequency front-end circuit meets the preset requirement or not according to the channel carrier frequency of the first radio-frequency front-end circuit and the channel carrier frequency of the second radio-frequency front-end circuit.
Specifically, for a coexistence scenario of WiFi 5G and N79, as shown in fig. 7, a channel interval diagram provided in the embodiment of the present application is shown, as shown in the figure, only the frequency interval between the N79 high channel and the WiFi 5G low channel is not enough, the isolation of hardware is very small, and a receive path protection needs to be performed. The high channel and the low channel refer to channels with channel carrier frequencies in two frequency bands divided by taking the midpoint frequency of the N79/WiFi 5G frequency band as a dividing point, the channel corresponding to the frequency band with the channel carrier frequency larger than the midpoint frequency is the high channel, and the channel corresponding to the frequency band with the channel carrier frequency smaller than the midpoint frequency is the low channel. It is understood that the dividing point of the channel division can be adjusted according to the actual situation, and is not limited to the frequency of the middle point in the frequency band.
For the scenario that N79 is in a low channel and WiFi 5G is in a high channel, the channel bandwidth ratio between N79 and WiFi is wide, and the requirement of isolation (devices do not damage the threshold) can be well met by the out-of-band rejection of the filter and the superposition of antenna isolation, so that extra protection processing is not needed in the scenario. Fig. 8 is a schematic diagram of a scenario that needs to be protected based on a channel interval according to the embodiment of the present application, and as shown in fig. 8, except for a scenario that N79 is in a high channel and WiFi 5G is in a low channel, no receive path protection is needed in other scenarios.
According to the signal transmission method provided by the embodiment of the application, whether the channel interval between the first radio frequency front-end circuit and the second radio frequency front-end circuit meets the preset requirement or not is determined according to the channel carrier frequency of the first radio frequency front-end circuit and the channel carrier frequency of the second radio frequency front-end circuit, so that a protection scene can be released as far as possible, performance sacrifice and functional defects are avoided while interference is effectively avoided, and the communication rate and the communication capacity are improved.
Based on the above embodiment, the preset requirements specifically include:
the channel carrier frequency of the first radio frequency front-end circuit is within a first preset range, and meanwhile, the channel carrier frequency of the second radio frequency front-end circuit is within a second preset range; and the difference value between the maximum value of the second preset range and the minimum value of the first preset range does not exceed a preset threshold value.
Specifically, for a coexistence scenario of WiFi 5G and N79, the first preset range is a high frequency band of two frequency bands divided by using a midpoint frequency of an N79 frequency band as a dividing point, and the second preset range is a low frequency band of the two frequency bands divided by using the midpoint frequency of the WiFi 5G frequency band as the dividing point. The difference between the maximum value of the second preset range (namely the midpoint frequency of the WiFi 5G frequency band) and the minimum value of the first preset range (namely the midpoint frequency of the N79 frequency band) does not exceed a preset threshold. The preset threshold is the channel interval to be protected.
The signal transmission method provided by the embodiment of the application is characterized in that the channel carrier frequency of the first radio frequency front end circuit is within a first preset range, and meanwhile, the channel carrier frequency of the second radio frequency front end circuit is within a second preset range, wherein the difference between the maximum value of the second preset range and the minimum value of the first preset range is not more than a preset threshold value, a receiving access is protected, a protection scene can be released as far as possible, performance sacrifice and functional defects are avoided while interference is effectively avoided, and the communication rate and the communication capacity are improved.
Based on the above embodiment, the first radio frequency module selected for sending the first radio frequency signal is a signal transceiving unit; and the second radio frequency module corresponding to the second target antenna is a signal transceiving unit or a signal receiving unit.
Specifically, under the condition that a first radio frequency signal is sent based on the first radio frequency front end circuit, a first radio frequency module selected for sending the first radio frequency signal is a signal transceiver unit with a sending function, and correspondingly, the second radio frequency module is a signal transceiver unit or a signal receiving unit with a receiving function; in the case of sending a second rf signal based on the second rf front-end circuit, the same process as the above case is omitted here for brevity.
According to the signal transmission method, the first radio frequency module selected for sending the first radio frequency signal is the signal receiving and sending unit, the second radio frequency module corresponding to the second target antenna is the signal receiving and sending unit or the signal receiving unit, a receiving channel of a radio frequency module of the other radio frequency front-end circuit can be protected when one of the radio frequency front-end circuits works, performance sacrifice and functional defects are avoided while interference is effectively avoided, and communication speed and communication capacity are improved.
Fig. 9 is a schematic diagram of a hardware structure of a terminal device for implementing an embodiment of the present application, where the terminal device 900 includes, but is not limited to: a radio frequency unit 901, a network module 902, an audio output unit 903, an input unit 904, a sensor 905, a display unit 906, a user input unit 907, an interface unit 908, a memory 909, a processor 910, and a power supply 911.
Those skilled in the art will appreciate that the terminal device 900 may further include a power supply (e.g., a battery) for supplying power to various components, and the power supply may be logically connected to the processor 910 through a power management system, so as to implement functions of managing charging, discharging, and power consumption through the power management system. The terminal device structure shown in fig. 9 does not constitute a limitation of the terminal device, and the terminal device may include more or less components than those shown, or combine some components, or arrange different components, and thus, the description is omitted here. In the embodiment of the present application, the terminal device includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer, a palm computer, a vehicle-mounted terminal, a wearable device, a pedometer, and the like.
It should be understood that, in the embodiment of the present application, the radio frequency unit 901 may be used for receiving and sending signals during a message sending and receiving process or a call process, and specifically, after receiving downlink data from a base station, the downlink data is processed by the processor 910; in addition, the uplink data is transmitted to the base station. Generally, the radio frequency unit 901 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like. In addition, the radio frequency unit 901 can also communicate with a network and other devices through a wireless communication system.
The radio frequency unit 901 includes: a first radio frequency transceiver, a second radio frequency transceiver, a first radio frequency front end circuit and a second radio frequency front end circuit;
wherein the first radio frequency transceiver is electrically connected with a second radio frequency transceiver;
the first radio frequency front-end circuit comprises at least one first radio frequency module, the second radio frequency front-end circuit comprises at least one second radio frequency module, and each first radio frequency module is connected with one antenna and used for executing transceiving of first radio frequency signals; each second radio frequency module is connected with one antenna and used for executing the transceiving of second radio frequency signals;
each first radio frequency module is electrically connected with the second radio frequency transceiver, and each second radio frequency module is also electrically connected with the second radio frequency transceiver;
the second radio frequency transceiver is used for controlling the working mode of each second radio frequency module based on the transmitting power of the first radio frequency signal and the isolation degree between each antenna.
Wherein the first radio frequency module and the second radio frequency module are:
a signal transceiving unit, or a signal receiving unit.
The first radio frequency transceiver is an NR transceiver, the second radio frequency transceiver is a WiFi transceiver, the first radio frequency front end circuit is an N79 radio frequency front end, and the second radio frequency front end circuit is a WiFi 5G radio frequency front end.
The second radio frequency transceiver is to: under the condition that a first radio frequency signal is sent based on the first radio frequency front-end circuit, and the channel interval between the first radio frequency front-end circuit and the second radio frequency front-end circuit meets a preset requirement, determining a first radio frequency module and a corresponding first target antenna which are selected for sending the first radio frequency signal, and the transmitting power of the first radio frequency signal;
determining a difference value between the transmitting power and each isolation degree based on the isolation degree of each antenna in the first target antenna and the second radio frequency front end circuit;
determining a target isolation degree corresponding to the target difference value and a second target antenna corresponding to the target isolation degree under the condition that a target difference value larger than a second threshold value exists in the difference values of the transmitting power and the isolation degrees; the second target antenna is an antenna in the second radio frequency front-end circuit;
determining a second radio frequency module corresponding to the second target antenna, and controlling a receiving channel of the second radio frequency module to be in a high isolation mode; the second threshold is a reception protection threshold of the second radio frequency module.
The terminal device provided by the embodiment of the application determines the difference value between the transmitting power and each isolation degree based on the isolation degree of each antenna in the first target antenna and the second radio frequency front end circuit, determines the target isolation degree corresponding to the target difference value and the second target antenna corresponding to the target isolation degree under the condition that the target difference value larger than the second threshold exists in the difference value between the transmitting power and each isolation degree, determines the second radio frequency module corresponding to the second target antenna, and controls the receiving channel of the second radio frequency module to be in a high isolation mode, so that performance sacrifice and functional defect can be avoided while interference is effectively avoided, and communication rate and communication capacity are improved.
Optionally, before determining the first radio frequency module and the corresponding first target antenna selected for sending the first radio frequency signal and the transmission power of the first radio frequency signal, the processor 910 is configured to determine whether a channel interval between the first radio frequency front-end circuit and the second radio frequency front-end circuit meets a preset requirement according to a channel carrier frequency of the first radio frequency front-end circuit and a channel carrier frequency of the second radio frequency front-end circuit. The preset requirements specifically include:
the channel carrier frequency of the first radio frequency front-end circuit is within a first preset range, and meanwhile, the channel carrier frequency of the second radio frequency front-end circuit is within a second preset range; and the difference value between the maximum value of the second preset range and the minimum value of the first preset range does not exceed a preset threshold value.
The terminal equipment provided by the embodiment of the application is characterized in that the channel carrier frequency of the first radio frequency front-end circuit is within a first preset range, and meanwhile, the channel carrier frequency of the second radio frequency front-end circuit is within a second preset range, wherein the difference between the maximum value of the second preset range and the minimum value of the first preset range is not more than a preset threshold value, a receiving path is protected, a protection scene can be released as far as possible, performance sacrifice and functional defects are avoided while interference is effectively avoided, and the communication rate and the communication capacity are improved.
The terminal device provides wireless broadband internet access to the user through the network module 902, such as helping the user send and receive e-mails, browse webpages, access streaming media, and the like.
The audio output unit 903 may convert audio data received by the radio frequency unit 901 or the network module 902 or stored in the memory 909 into an audio signal and output as sound. Also, the audio output unit 903 may also provide audio output related to a specific function performed by the terminal apparatus 900 (e.g., a call signal reception sound, a message reception sound, etc.). The audio output unit 903 includes a speaker, a buzzer, a receiver, and the like.
The input unit 904 is used to receive audio or video signals. The input Unit 904 may include a Graphics Processing Unit (GPU) 9041 and a microphone 9042, and the Graphics processor 9041 processes image data of a still picture or video obtained by an image capturing device (such as a camera) in a video capture mode or an image capture mode. The processed image frames may be displayed on the display unit 906. The image frames processed by the graphic processor 9041 may be stored in the memory 909 (or other storage medium) or transmitted via the radio frequency unit 901 or the network module 902. The microphone 9042 can receive sounds and can process such sounds into audio data. The processed audio data may be converted into a format output transmittable to a mobile communication base station via the radio frequency unit 901 in case of the phone call mode.
The terminal device 900 also includes at least one sensor 905, such as light sensors, motion sensors, and other sensors. Specifically, the light sensor includes an ambient light sensor that can adjust the brightness of the display panel 9061 according to the brightness of ambient light, and a proximity sensor that can turn off the display panel 9061 and/or backlight when the terminal device 900 is moved to the ear. As one of the motion sensors, the accelerometer sensor can detect the magnitude of acceleration in each direction (generally three axes), detect the magnitude and direction of gravity when stationary, and can be used to identify the terminal device posture (such as horizontal and vertical screen switching, related games, magnetometer posture calibration), vibration identification related functions (such as pedometer, tapping), and the like; the sensor 905 may further include a fingerprint sensor, a pressure sensor, an iris sensor, a molecular sensor, a gyroscope, a barometer, a hygrometer, a thermometer, an infrared sensor, etc., which are not further described herein.
The display unit 906 is used to display information input by the user or information provided to the user. The Display unit 906 may include a Display panel 9061, and the Display panel 9061 may be configured in the form of a Liquid Crystal Display (LCD), an Organic Light-Emitting Diode (OLED), or the like.
The user input unit 907 may be used to receive input numeric or character information and generate key signal inputs related to user settings and function control of the terminal device. Specifically, the user input unit 907 includes a touch panel 9071 and other input devices 9072. The touch panel 9071, also referred to as a touch screen, may collect touch operations by a user on or near the touch panel 9071 (e.g., operations by a user on or near the touch panel 9071 using a finger, a stylus, or any other suitable object or accessory). The touch panel 9071 may include two parts, a touch detection device and a touch controller. The touch detection device detects the touch direction of a user, detects a signal brought by touch operation and transmits the signal to the touch controller; the touch controller receives touch information from the touch sensing device, converts the touch information into touch point coordinates, sends the touch point coordinates to the processor 910, receives a command from the processor 910, and executes the command. In addition, the touch panel 9071 may be implemented by using various types such as a resistive type, a capacitive type, an infrared ray, and a surface acoustic wave. The user input unit 907 may include other input devices 9072 in addition to the touch panel 9071. Specifically, the other input devices 9072 may include, but are not limited to, a physical keyboard, function keys (such as a volume control key, a switch key, and the like), a track ball, a mouse, and a joystick, which are not described herein again.
Further, the touch panel 9071 may be overlaid on the display panel 9061, and when the touch panel 9071 detects a touch operation on or near the touch panel 9071, the touch panel is transmitted to the processor 910 to determine the type of the touch event, and then the processor 910 provides a corresponding visual output on the display panel 9061 according to the type of the touch event. Although in fig. 9, the touch panel 9071 and the display panel 9061 are implemented as two independent components to implement the input and output functions of the terminal device, in some embodiments, the touch panel 9071 and the display panel 9061 may be integrated to implement the input and output functions of the terminal device, which is not limited herein.
The interface unit 908 is an interface through which an external device is connected to the terminal apparatus 900. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device having an identification module, an audio input/output (I/O) port, a video I/O port, an earphone port, and the like. The interface unit 908 may be used to receive input (e.g., data information, power, etc.) from external devices and transmit the received input to one or more elements within the terminal apparatus 900 or may be used to transmit data between the terminal apparatus 900 and external devices.
The memory 909 may be used to store software programs as well as various data. The memory 909 may mainly include a storage program area and a storage data area, wherein the storage program area may store an operating system, an application program required for at least one function (such as a sound playing function, an image playing function, and the like), and the like; the storage data area may store data (such as audio data, a phonebook, etc.) created according to the use of the cellular phone, and the like. In addition, the Memory 909 may include a high-speed random access Memory, and may also include a nonvolatile Memory, wherein the nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable Programmable PROM (EPROM), an Electrically Erasable Programmable ROM (EEPROM), or a flash Memory. Such as at least one magnetic disk storage device, flash memory device, or other volatile solid state storage device.
The processor 910 is a control center of the terminal device, connects various parts of the entire terminal device with various interfaces and lines, and performs various functions of the terminal device and processes data by running or executing software programs and/or modules stored in the memory 909 and calling data stored in the memory 909, thereby performing overall monitoring of the terminal device. Processor 910 may include one or more processing units; alternatively, the processor 910 may integrate an application processor, which mainly handles operating systems, user interfaces, and applications or instructions, etc., and a modem processor, which mainly handles wireless communications, such as a baseband processor. It is to be appreciated that the modem processor described above may not be integrated into processor 910.
In addition, the terminal device 900 includes some functional modules that are not shown, and are not described in detail here.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functions involved, e.g., the methods described may be performed in an order different than that described, and various steps may be added, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present application may be embodied in the form of a software product, which is stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present application.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the invention is not limited to the precise embodiments described above, which are meant to be illustrative and not restrictive, and that various changes may be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (4)
1. A radio frequency system, comprising:
a first radio frequency transceiver, a second radio frequency transceiver, a first radio frequency front end circuit and a second radio frequency front end circuit;
wherein the first radio frequency transceiver is electrically connected with a second radio frequency transceiver;
the first radio frequency front-end circuit comprises at least one first radio frequency module, the second radio frequency front-end circuit comprises at least one second radio frequency module, and each first radio frequency module is connected with one antenna and used for executing transceiving of first radio frequency signals; each second radio frequency module is connected with one antenna and used for executing the transceiving of second radio frequency signals;
each first radio frequency module is electrically connected with the second radio frequency transceiver, and each second radio frequency module is also electrically connected with the second radio frequency transceiver;
the second radio frequency transceiver is used for controlling the working mode of each second radio frequency module based on the transmitting power of the first radio frequency signal and the isolation degree between each antenna;
the first radio frequency module and the second radio frequency module are as follows:
a signal transceiving unit, or a signal receiving unit;
the first radio frequency transceiver is an NR transceiver, the second radio frequency transceiver is a WiFi transceiver, the first radio frequency front-end circuit is an N79 radio frequency front-end circuit, and the second radio frequency front-end circuit is a WiFi 5G radio frequency front-end circuit.
2. A method for signal transmission based on the radio frequency system of claim 1, wherein the method comprises:
under the condition that a first radio frequency signal is sent based on the first radio frequency front end circuit, and the channel interval between the first radio frequency front end circuit and the second radio frequency front end circuit meets a preset requirement, determining a first radio frequency module selected for sending the first radio frequency signal, a corresponding first target antenna and the transmitting power of the first radio frequency signal;
determining a difference value between the transmitting power and each isolation degree based on the isolation degree of each antenna in the first target antenna and the second radio frequency front end circuit;
determining a target isolation degree corresponding to the target difference value and a second target antenna corresponding to the target isolation degree under the condition that a target difference value larger than a second threshold value exists in the difference values of the transmitting power and the isolation degrees; the second target antenna is an antenna in the second radio frequency front-end circuit;
determining a second radio frequency module corresponding to the second target antenna, and controlling a receiving channel of the second radio frequency module to be in a high isolation mode; the second threshold value is a receiving protection threshold of the second radio frequency module;
before determining the first radio frequency module selected for sending the first radio frequency signal, the corresponding first target antenna, and the transmission power of the first radio frequency signal, the method further includes:
determining whether the channel interval of the first radio frequency front-end circuit and the second radio frequency front-end circuit meets a preset requirement or not according to the channel carrier frequency of the first radio frequency front-end circuit and the channel carrier frequency of the second radio frequency front-end circuit;
the preset requirements specifically include:
the channel carrier frequency of the first radio frequency front-end circuit is within a first preset range, and meanwhile, the channel carrier frequency of the second radio frequency front-end circuit is within a second preset range; and the difference value between the maximum value of the second preset range and the minimum value of the first preset range does not exceed a preset threshold value.
3. The signal transmission method according to claim 2, wherein the first rf module selected for transmitting the first rf signal is a signal transceiver unit; and the second radio frequency module corresponding to the second target antenna is a signal transceiving unit or a signal receiving unit.
4. A terminal device, characterized in that it comprises a radio frequency system according to claim 1.
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