CN115622587A - Radio frequency system, control method thereof and wireless communication equipment - Google Patents
Radio frequency system, control method thereof and wireless communication equipment Download PDFInfo
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- CN115622587A CN115622587A CN202211064936.1A CN202211064936A CN115622587A CN 115622587 A CN115622587 A CN 115622587A CN 202211064936 A CN202211064936 A CN 202211064936A CN 115622587 A CN115622587 A CN 115622587A
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Abstract
The application discloses a radio frequency system, a control method thereof and a wireless communication device, wherein the radio frequency system comprises: a radio frequency transceiver; a radio frequency front end component, comprising: the first power amplifier is connected with the radio frequency transceiver; the first radio frequency branch circuit is connected with the first power amplifier and used for transmitting signals of a first communication system; the second radio frequency branch is connected with the first power amplifier and used for transmitting signals of a second communication system; one end of the switching device is connected with the first power amplifier, and when the radio frequency system transmits the signal of the first communication system, the other end of the switching device is connected with the first radio frequency branch; when the radio frequency system transmits the signal of the second communication system, the other end of the switch device is connected with the second radio frequency branch.
Description
Technical Field
The embodiment of the application relates to the technical field of wireless communication, and more particularly to a radio frequency system, a control method thereof and a wireless communication device.
Background
At present, a wireless communication device can generally support multiple communication systems, and a radio frequency circuit of each communication system includes a power amplifier, which has a problem of high cost.
Disclosure of Invention
The embodiment of the application provides a radio frequency system, a control method thereof and wireless communication equipment. Various aspects of embodiments of the present application are described below.
In a first aspect, a radio frequency system is provided, comprising: a radio frequency transceiver; a radio frequency front end component, comprising: the first power amplifier is connected with the radio frequency transceiver; the first radio frequency branch circuit is connected with the first power amplifier and is used for transmitting signals of a first communication system; the second radio frequency branch is connected with the first power amplifier and used for transmitting signals of a second communication system; one end of the switching device is connected with the first power amplifier, and when the radio frequency system transmits the signal of the first communication system, the other end of the switching device is connected with the first radio frequency branch; when the radio frequency system transmits the signal of the second communication system, the other end of the switch device is connected with the second radio frequency branch.
In a second aspect, a wireless communication device is provided, comprising a baseband system for generating a baseband signal; a radio frequency system as claimed in the first aspect, configured to generate a radio frequency signal from the baseband signal.
In a third aspect, a method for controlling a radio frequency system is provided, where the radio frequency system includes: a radio frequency transceiver; a radio frequency front end component, comprising: the first power amplifier is connected with the radio frequency transceiver; the first radio frequency branch circuit is connected with the first power amplifier and is used for transmitting signals of a first communication system; the second radio frequency branch is connected with the first power amplifier and used for transmitting signals of a second communication system; one end of the switching device is connected with the first power amplifier, and when the radio frequency system transmits the signal of the first communication system, the other end of the switching device is connected with the first radio frequency branch; when the radio frequency system transmits the signal of the second communication system, the other end of the switch device is connected with the second radio frequency branch; the method comprises the following steps: when the radio frequency system transmits the signal of the first communication system, controlling the other end of the switch device to be connected with the first radio frequency branch; and when the radio frequency system transmits the signal of the second communication system, controlling the other end of the switch device to be connected with the second radio frequency branch.
In a fourth aspect, there is provided a computer readable storage medium having stored thereon executable code that, when executed, is capable of implementing the method of the third aspect.
In a fifth aspect, there is provided a computer program product comprising executable code that, when executed, is capable of implementing the method of the third aspect.
The embodiment of the application provides a radio frequency system, which can support multiple communication modes and comprises a radio frequency front end component, wherein the radio frequency front end component comprises a plurality of radio frequency branches, a power amplifier and a switch device, and the radio frequency branches can be used for correspondingly transmitting signals of the multiple communication modes. One end of the switch device is connected with the power amplifier, the other end of the switch device is connected with the radio frequency branches, and the switch device can switch the communication states of the radio frequency branches according to signals of different communication modes, so that the radio frequency branches can share the power amplifier, and the cost of a radio frequency system is reduced.
Drawings
Fig. 1 is a schematic diagram of an internal structure of a radio frequency system according to an embodiment of the present application.
Fig. 2 is a schematic diagram of an internal structure of a radio frequency system according to another embodiment of the present application.
Fig. 3 is a detailed internal structural diagram of the radio frequency system shown in fig. 2.
Fig. 4 is a schematic structural diagram of an LTE-NR dual connectivity technique according to an embodiment of the present application.
Fig. 5 is a schematic structural diagram of an LTE dual connectivity technique according to an embodiment of the present application.
Fig. 6 is a schematic structural diagram of an LTE-NR dual connectivity technique according to another embodiment of the present application.
Fig. 7 is a flowchart illustrating a control method of a radio frequency system according to an embodiment of the present application.
Fig. 8 is a schematic structural diagram of a control device of a radio frequency system 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 only a part of the embodiments of the present application, and not all of the embodiments.
In recent years, with the development of communication technology, wireless communication devices are increasingly used. Wireless communication devices typically include a baseband system and a radio frequency system. The baseband system is used to generate baseband signals. The radio frequency system is used for converting a baseband signal into a radio frequency signal, so that the radio frequency signal is transmitted into a wireless channel through an antenna.
At present, a radio frequency system in a wireless communication device may generally support multiple communication systems, signals of the multiple communication systems may include, for example, 2G signals, 4G signals, and 5G signals, and a radio frequency circuit of each communication system includes a power amplifier, which has a problem of high cost. For convenience of understanding, a radio frequency system supporting multiple communication systems is illustrated below by taking a wireless communication device applied in a non-standalone (NSA) scenario in a New Radio (NR) as an example.
The 5G communication system introduces enhanced mobile broadband (eMBB) technology. The eMBB has greater throughput, low latency, and a more consistent experience. Under an eMB application scene, data generated by the wireless communication equipment can be increased geometrically, and unprecedented requirements are provided for the communication capacity of the wireless communication equipment by mass data. Both 5G NSA and stand-alone (SA) deployment schemes involve the addition of a key scheme in terms of increasing communication rates.
Since the coverage area of the 5G base station is small, if the 5G base station and a Long Term Evolution (LTE) base station are expected to cover the same area, the number of the required 5G base stations is more than 3 times that of the LTE base station, and the network establishment cost is increased suddenly. Due to the global economic development unevenness and the different 4G (i.e. LTE) to 5G evolution strategies in different countries, the global 4G and 5G dual connectivity (endec) scheme will be an important 5G coverage scheme for a long time, i.e. the scheme using 4G and 5G dual connectivity ensures the signal continuity in the area where the 5G signal is unstable or uncovered.
NSA refers to the deployment of 5G networks using existing 4G infrastructure, and the 5G carriers based on the NSA architecture only carry user data, and their control signaling is still transmitted through the 4G network. For wireless communication devices, NSA requires that 4G and 5G can operate simultaneously. In addition, many wireless communication devices also require one or more older standards. For example, many 4G/5G wireless communication devices will be configured to support the 2G cellular standard, namely Global System for Mobile communications (GSM). 2G communications typically require higher transmit power (e.g., 33 dBm) at cellular antennas, for example, in the case of poor 4G and 5G signals, the higher quality communication requirements may be guaranteed through 2G signal calls.
Fig. 1 is a schematic structural diagram of a radio frequency system 1000 supporting multiple communication systems provided in the related art. As shown in fig. 1, the rf system 1000 may include: an rf transceiver 110 and an rf front-end component 100, wherein the rf front-end component 100 includes an rf front-end transmitting chip 120, a multi-mode multi-band power amplifier (MMPA) 130 and a multi-mode multi-band power amplifier 140.
The rf transceiver 110 can support the transmission or reception of rf signals of multiple systems. The signals of the plurality of communication systems may include, for example, 2G signals, 4G signals, and 5G signals.
One end of the rf front-end transmitting chip 120 is connected to the rf transceiver 110, and the other end of the rf front-end transmitting chip 120 is connected to the antenna 121, so as to form an rf circuit for transmitting a signal of a first communication system, where the signal of the first communication system may be, for example, a 2G signal. The rf front-end transmitting chip 120 may also be referred to as an rf front-end module (TxM), and the rf front-end transmitting chip 120 may include an if amplifier 122, an lf amplifier 126, and a switch device 129. One end of the switching device 129 is connected to the intermediate frequency amplifier 122 and the low frequency amplifier 126, and the other end of the switching device 129 is connected to the antenna 121. The radio frequency circuit for the signal of the first communication system may include, for example, two radio frequency branches, which are a radio frequency branch 123 and a radio frequency branch 127, respectively, where the radio frequency branch 123 is connected to the intermediate frequency power amplifier 122 and is configured to transmit a signal of an intermediate frequency band of the first communication system, and the radio frequency branch 127 is connected to the low frequency power amplifier 126 and is configured to transmit a signal of a low frequency band of the first communication system. It is understood that when the rf transceiver 110 transmits signals in the if band of the first communication system, the switching device 129 may control to connect the if power amplifier 122 and the antenna 121. When the rf transceiver 110 transmits a signal in a low frequency band of the first communication system, the switching device 129 may control to connect the low frequency power amplifier 126 and the antenna 121. The switching device 129 may be a single pole, multiple throw switch, such as a single pole, 16 throw switch.
One end of the multi-mode multi-band power amplifier 130 is connected to the rf transceiver 110, and the other end of the multi-mode multi-band power amplifier 130 is connected to the antenna 121 through the switching device 129, so as to form an rf circuit for transmitting signals of the second communication system, which may be, for example, 4G signals. The multi-mode multi-band power amplifier 130 may include an intermediate frequency amplifier power amplifier 132 and a switching device 133, a low frequency power amplifier 136 and a switching device 137, the switching device 133 may be, for example, a single-pole double-throw switch, and the switching device 137 may be, for example, a single-pole triple-throw switch. One end of the switching device 133 is connected to the intermediate frequency power amplifier 132, and the other end of the switching device 133 is connected to the antenna 121 through the switching device 129. One end of the switching device 137 is connected to the low frequency power amplifier 136, and the other end of the switching device 137 is connected to the antenna 121 through the switching device 129. The rf circuit for signals of the second communication system may include two rf branches, i.e., the rf branch 134 and the rf branch 138. The rf branch 134 is connected to the if power amplifier 132 and is configured to transmit signals in the if band of the second communication system, and the rf branch 138 is connected to the lf power amplifier 136 and is configured to transmit signals in the lf band of the second communication system. It is understood that when the rf transceiver 110 transmits signals in the if band of the second communication system, the switching device 129 can control to connect the if power amplifier 132 and the antenna 121. When the rf transceiver 110 transmits a signal in the low frequency band of the second communication system, the switching device 129 may control to connect the low frequency power amplifier 136 and the antenna 121.
One end of the multi-mode multi-band power amplifier 140 is connected to the rf transceiver 110, the other end of the multi-mode multi-band power amplifier 140 may be connected to the antenna 141, or may be connected to the antenna 121 through the switching device 129, so as to form a radio frequency circuit for transmitting a signal of a third communication system, where the signal of the third communication system may be, for example, a 5G signal, that is, a part of the signal of the third communication system may be transmitted and received by the antenna 141, and another part of the signal may be transmitted and received by the antenna 121. The multi-mode multi-band power amplifier 140 may include a high-frequency power amplifier 142 and a switching device 143, an intermediate-frequency power amplifier 144 and a switching device 145, a low-frequency power amplifier 134 and a switching device 135, the switching device 143 may be, for example, a single-pole double-throw switch, and the switching device 145 and the switching device 147 may be, for example, a single-pole five-throw switch. One end of the switching device 143 is connected to the high-frequency power amplifier 142, and the other end of the switching device 143 is connected to the antenna 141. One end of the switching device 145 is connected to the intermediate frequency power amplifier 144, and the other end of the switching device 145 may be connected to the antenna 121 through the switching device 129. One end of the switching device 147 is connected to the low frequency power amplifier 146, and the other end of the switching device 147 may be connected to the antenna 121 through the switching device 129. As the same operation principle of the multi-mode multi-band power amplifier 130, the rf circuit for signals of the third communication system may include, for example, three rf branches, which are respectively connected to the high-frequency power amplifier 142, the intermediate-frequency power amplifier 144, and the low-frequency power amplifier 146, so as to respectively transmit signals of high/intermediate/low frequency bands of the third communication system. Reference may be made in particular to the description of the section multimode multi-band power amplifier 130. For convenience of description, fig. 1 mainly illustrates a part of the radio frequency system 1000, and actually, the radio frequency system 1000 may further include other devices, such as a switching device, an impedance adjusting device, a duplexer, and the like.
As can be seen from the above, the radio frequency system 1000 may support signals of multiple communication systems (e.g., 2G signals, 4G signals, 5G signals, etc.), and the radio frequency circuit of each communication system includes a power amplifier, as an example, the 2G radio frequency circuit may include the intermediate frequency power amplifier 122 and the low frequency power amplifier 126, and the 4G and 5G radio frequency circuits each include a multi-mode multi-frequency power amplifier. The cost of the rf system is high due to the excessive arrangement of the power amplifiers, and in addition, a large area is occupied in a place where the chip is very small in size.
In order to solve the above problem, an embodiment of the present application provides a radio frequency system, where the radio frequency system may support multiple communication schemes, and the radio frequency system includes a radio frequency front end component, where the radio frequency front end component includes multiple radio frequency branches, a power amplifier, and a switching device, and the multiple radio frequency branches may be used to correspondingly transmit signals of the multiple communication schemes. One end of the switch device is connected with the power amplifier, the other end of the switch device is connected with the radio frequency branches, the switch device can switch the communication states of the radio frequency branches according to signals of different communication modes, so that the radio frequency branches can share the power amplifier, the cost of a radio frequency system is reduced, and the occupied area of a chip in the radio frequency system is saved.
Therefore, how to reduce the cost of the rf system and save the occupied area of the rf system chip is a problem to be solved urgently.
In view of the foregoing problems, an embodiment of the present application provides a radio frequency system, and the following describes an embodiment of the present application in detail.
Fig. 2 is a schematic diagram of a radio frequency system according to an embodiment of the present application. Referring to fig. 2, a radio frequency system 2000 according to an embodiment of the present application includes: a radio frequency transceiver 210 and a radio frequency front end component 200.
The rf transceiver 210 can support the transmission or reception of rf signals of multiple systems. The signals of the plurality of communication systems may include, for example, 2G signals, 4G signals, and 5G signals.
The rf front-end module 200 is connected to an rf transceiver, and the rf front-end module 200 includes a plurality of rf circuits for transmitting or receiving signals of a plurality of communication systems. The rf front-end component 200 includes a first power amplifier 222, a first rf branch 223, a second rf branch 224, and a switching device 225.
The first power amplifier 222 is connected to the rf transceiver 210 for performing power amplification on the rf signal transmitted by the rf transceiver 210, and the first power amplifier 222 may be, for example, a low frequency power amplifier, an intermediate frequency power amplifier, and the like, which is not limited in this embodiment.
The first radio frequency branch 223 is connected to the first power amplifier 222, and is configured to transmit a signal of a first communication system, where the signal of the first communication system may be, for example, a 2G signal.
The second rf branch 224 is also connected to the first power amplifier 222, and is configured to transmit a signal of a second communication system, where the signal of the second communication system may be a 4G signal.
One end T1 of the switching device 225 may be connected to the first power amplifier 222, and when the radio frequency system 2000 transmits a signal of the first communication system, the other end T2 of the switching device 225 may be connected to the first radio frequency branch 223, and at this time, the power amplifier 222 may be used to perform power amplification on the signal of the first communication system. When the rf system 2000 transmits the signal of the second communication system, the other end T2 of the switching device 225 may be connected to the second rf branch 224, and then the power amplifier 222 may be used to perform power amplification on the signal of the second communication system.
It can be seen that, as the radio frequency system 2000 shown in fig. 2 can support multiple communication systems, by providing the switching device 225 in the radio frequency front end assembly 200, which cooperates with the power amplifier 222, the first radio frequency branch 223 and the second radio frequency branch 224 can share the same power amplifier, so that the cost of the radio frequency system 2000 can be saved. In addition, the power amplifier on the second rf branch is saved, and the chip footprint in the rf system 2000 can also be reduced. It should be noted that, when the signal of the first communication system is a 2G signal, the radio frequency system 2000 may still satisfy the 4G and 5G signal and transmission scenario in the endec state.
One possible implementation of rf front-end component 200 is given below by way of example in fig. 3.
As shown in fig. 3, the rf front-end component 200 may include a plurality of power amplifiers, and the first power amplifier 222 may be any one of the plurality of power amplifiers. The plurality of power amplifiers may include, for example, a first power amplifier 222 and a second power amplifier 226, the first power amplifier 222 may be, for example, an intermediate frequency power amplifier, and the second power amplifier 226 may be, for example, a low frequency power amplifier. The contents of the first power amplifier 222 are described with reference to fig. 2. The second power amplifier 226 may be connected to the rf transceiver 210 for power amplifying the rf signals in the low frequency band transmitted by the rf transceiver 210. The rf front-end assembly 200 further includes a third rf branch 227, a fourth rf branch 228, and a switching device 229. The third rf branch 227 may be configured to transmit a low frequency band signal of the first communication scheme, and the fourth rf branch 228 may be configured to transmit a low frequency band signal of the second communication scheme. One end T1 of the switching device 229 may be connected to the second power amplifier 226, and when the radio frequency system 2000 transmits the low frequency band signal of the first communication system, the other end T2 of the switching device 229 may be connected to the first radio frequency branch 227, and at this time, the power amplifier 226 may be used to perform power amplification on the low frequency band signal of the first communication system. When the radio frequency system 2000 transmits the low frequency band signal of the second communication system, the other end T2 of the switch device 229 may be connected to the second radio frequency branch 228, and at this time, the power amplifier 226 may be used to perform power amplification on the low frequency band signal of the second communication system. It should be understood that each power amplifier in the rf front-end component 200 can simultaneously power amplify signals of multiple communication systems. Taking the first power amplifier 222 as an example, when the first power amplifier 222 is an if power amplifier, the first power amplifier 222 may simultaneously perform power amplification on signals in if bands of multiple communication systems. When the first power amplifier 222 is a low-frequency power amplifier, the first power amplifier 222 may simultaneously perform power amplification on signals in a low-frequency band of multiple communication systems. That is, signals of a plurality of communication systems can share the first power amplifier 222 and the second power amplifier 226. For example, the rf branches connected to the first power amplifier 222 for transmitting signals of different standards may include three rf branches (for transmitting signals of three different standards), or even more, and this is not limited in this embodiment of the present application.
In some embodiments, the rf front-end component 200 may include an rf front-end transmitting chip 220, and the first power amplifier 222, the second rf branch 223, the second rf branch 224, and the switching device 225 may be integrated in the front-end transmitting chip 220. Of course, the rf front end transmitting chip 220 may further include a second power amplifier 226, a third rf branch 227, a fourth rf branch 228, and a switching device 229. As an example, the first power amplifier 222 may be an intermediate frequency power amplifier, and the second power amplifier 226 may be a low frequency power amplifier, and both of the amplifiers may perform power amplification on the signal of the first communication system and the signal of the second communication system, where the signal of the first communication system may be, for example, a 2G signal, and the signal of the second communication system may be a 4G signal.
With continued reference to fig. 3, in some embodiments, the rf front-end component 200 may further include a multi-mode multi-band power amplifier 240, one end of the multi-mode multi-band power amplifier 240 is connected to the rf transceiver 210, and the other end of the multi-mode multi-band power amplifier 240 may be connected to the antenna 241 or the antenna 221 through the switching device 129, so as to form an rf circuit for transmitting signals of a third communication system, which may be, for example, 5G signals. Multi-mode multi-band power amplifier 240 may include a high frequency power amplifier 242 and a switching device 243, an intermediate frequency amplifier power amplifier 244 and a switching device 245, and a low frequency power amplifier 234 and a switching device 235. The multi-mode multi-band power amplifier 240 and the multi-mode multi-band power amplifier 140 are the same device, and reference may be made to the description of the multi-mode multi-band power amplifier 140, which is not limited herein. For convenience of description, fig. 3 mainly shows a part of the radio frequency system 2000, and actually, the radio frequency system 2000 may further include other devices, such as a switching device, an impedance adjusting device, a duplexer, and the like.
For better understanding of the transmission process of the 2G signal, the 4G signal and the 5G signal, the first power amplifier 222 shared by the 2G signal and the 4G signal is taken as an example to be described below, as an example, when the radio frequency system 2000 transmits the 2G signal, the radio frequency transceiver 210 may control the first radio frequency branch 223 in the radio frequency front end transmitting chip 220 to be in an operating state; when the rf system 2000 transmits the 4G signal and the 5G signal simultaneously, the rf transceiver 210 may control the multi-mode multi-band power amplifier 240 and the second rf branch 224 in the rf front-end transmitting chip 220 to be in an operating state. Similarly, the second power amplifier 226 may also be used to power amplify the 2G signal and the 4G signal, which will not be described in detail herein.
In some embodiments, the first power amplifier 222 and the second power amplifier 226 may also be shared by the 2G signal, the 4G signal, and the 5G signal without affecting the 4G and 5G signals in the endec state and transmitting, so that the size and cost of the rf front-end component 200 may be further reduced.
In some embodiments, the radio frequency system 2000 may implement transmission and reception of 4G signals and 5G signals in the endec state, and the frequency band of the 4G signals may include, for example, the low-frequency communication frequency bands in B1, B3, B5, and the like. The frequency band of the 5G signal may include high, medium, and low frequency communication bands such as N1, N28, and N41, for example. The operation of the rf system 2000 will be described in detail below by taking the concurrent transmission scenario of B3+ N41 as an example.
Working process in ENDC state:
as shown in fig. 3, to implement the B3+ N41 combined dual transmission function, after the B3 signal is transmitted from the rf transceiver 210, the B3 signal may enter a first power amplifier 222 in the rf front-end transmitting chip 220, at this time, one end T1 of the switching device 225 is connected to the first amplifier 222, the other end T2 of the switching device 225 is connected to the second rf branch 224, and the B3 signal enters a transmission (Tx) portion of a duplexer of the B3 signal through the switching device 133, then enters the switching device 129, and is transmitted through the antenna 221. Meanwhile, the N41 signal is transmitted from the rf transceiver 210, enters the high frequency power amplifier 242 of the multi-mode and multi-frequency power amplifier 240, goes out through the switching device 243, enters the duplexer (for example, a time division duplexer) of the B41 signal, and is finally transmitted through the antenna 241. It should be understood that radio frequency signals of corresponding frequency bands can also be received through the antenna, and the following description will take a receiving process of the antenna 221 for receiving B3 signals as an example. The antenna may receive a B3 signal transmitted by a network device, a base station, or the like, and then transmit the B3 signal to the rf transceiver 210 via a receive (Rx) portion of a duplexer (which may be a frequency division duplexer, for example) of the B3 signal.
Working process in GSM state:
the GSM high-frequency signal is transmitted from the radio frequency transceiver 210 and may enter the first power amplifier 222 in the radio frequency front-end transmitting chip 220, at this time, one end T1 of the switching device 225 is connected to the first amplifier 222, the other end T2 of the switching device 225 is connected to the first radio frequency branch 223, and the GSM high-frequency signal enters the switching device 129 through the duplexer and is finally transmitted through the antenna 221. Similarly, the GSM low-frequency band signal is sent from the radio frequency transceiver 210, and may enter the second power amplifier 226 in the radio frequency front-end transmitting chip 220, at this time, one end T1 of the switching device 229 is connected to the second amplifier 226, the other end T2 of the switching device 229 is connected to the third radio frequency branch 227, and the GSM low-frequency band signal enters the switching device 129 through the duplexer, and is finally transmitted through the antenna 221. It should be noted that the first rf branch 223 and the third rf branch 227 further include an impedance adjusting device, etc.
The embodiment of the present application further provides an endec combination technical solution, which is described in detail below with reference to fig. 4 to 6.
As shown in fig. 4, the endec scheme mainly uses 4G signals as anchor points of a control plane, a 4G base station (eNB) as a master station, and a 5G base station (gNB) as a slave station, and follows a 4G core network. The C-plane is responsible for processing control signals, i.e. managing call connections, and the U-plane is responsible for processing voice signals, i.e. managing call contents. In the NSA mode, the 5G network can be connected again only by connecting the 4G network through the C-plane, that is, the 5G network cannot be connected separately until the 4G network is connected.
In LTE dual connectivity, a Radio Resource Control (RRC) protocol may be established between the primary station and the handset, i.e., RRC messages are only transmitted between the primary station and the handset. However, the master station and the slave station each perform Radio Resource Management (RRM), and the RRM function is interactively coordinated between the master station and the slave station through an X2 interface, for example, the slave station allocates resources and then interacts with the master station through the X2 interface, and then the master station sends an RRC message including the slave station resource configuration to the mobile phone. Briefly, the handset sees only the RRC message from the primary station only and replies to the primary station only, as shown in fig. 5. Currently, in LTE-NR dual connectivity, not only the master and slave stations each perform RRM, but also the RRC protocol is independently established between the master and slave stations and the handset. That is, the slave no longer performs RRM interactive cooperation with the master through the X2 interface, but directly transmits from the slave to the handset through an RRC message, as shown in fig. 6. In addition, independent RRC connection also means that the primary and secondary stations can independently set RRC measurements.
The embodiment of the application also provides a wireless communication device, which comprises a baseband system, a signal processing module and a signal processing module, wherein the baseband system can be used for generating a baseband signal; any of the possible radio frequency systems as described hereinbefore may be used to generate a radio frequency signal from the baseband signal.
The apparatus embodiments of the present application are described in detail above with reference to fig. 1 to 6, and the method embodiments of the present application are described in detail below with reference to fig. 7. It is to be understood that the description of the method embodiments corresponds to the description of the apparatus embodiments, and therefore reference may be made to the preceding apparatus embodiments for parts which are not described in detail.
Fig. 7 is a flowchart illustrating a control method of a radio frequency system according to an embodiment of the present application. The control method 700 may be used in the radio frequency system described above, which includes: a radio frequency transceiver; a radio frequency front end component, comprising: the first power amplifier is connected with the radio frequency transceiver; the first radio frequency branch circuit is connected with the first power amplifier and used for transmitting signals of a first communication system; the second radio frequency branch is connected with the first power amplifier and used for transmitting signals of a second communication system; one end of the switch device is connected with the first power amplifier, and when the radio frequency system transmits the signal of the first communication system, the other end of the switch device is connected with the first radio frequency branch; when the radio frequency system transmits the signal of the second communication system, the other end of the switch device is connected with the second radio frequency branch;
the method 700 may include steps S720-S740.
In step S720, when the radio frequency system transmits the signal of the first communication system, controlling the other end of the switching device to be connected to the first radio frequency branch;
in step S740, when the radio frequency system transmits the signal of the second communication system, the other end of the switching device is controlled to be connected to the second radio frequency branch.
The following describes an apparatus 800 for controlling a radio frequency system in an embodiment of the present application with reference to fig. 8. The dashed lines in fig. 8 indicate that the unit or module is optional. The apparatus 800 may be used to implement the methods described in the method embodiments above. The apparatus 800 may be a computer or any type of electronic device.
The apparatus 800 may include one or more processors 810. The processor 810 may enable the apparatus 800 to implement the methods described in the previous method embodiments.
The apparatus 800 may also include one or more memories 820. The memory 820 has stored thereon a program that can be executed by the processor 810, causing the processor 810 to perform the methods described in the previous method embodiments. The memory 820 may be separate from the processor 810 or may be integrated in the processor 810.
The apparatus 800 may also include a transceiver 830. Processor 810 may communicate with other devices via transceiver 830. For example, processor 810 may transceive data with other devices via transceiver 830.
The embodiment of the application also provides a machine-readable storage medium for storing the program. And the program causes a computer to execute the method in the embodiments of the present application.
The embodiment of the application also provides a computer program product. The computer program product includes a program. The program causes a computer to execute the method in the embodiments of the present application.
The embodiment of the application also provides a computer program. The computer program causes a computer to perform the methods of the various embodiments of the present application.
In the above embodiments, all or part of the implementation may be realized by software, hardware, firmware or any other combination. When implemented in software, may be implemented in whole or in part in the form of a computer program product. The computer program product includes one or more computer instructions. The procedures or functions described in accordance with the embodiments of the disclosure are, in whole or in part, generated when the computer program instructions are loaded and 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 on a machine-readable storage medium or transmitted from one machine-readable storage medium to another, for example, from one website, computer, server, or data center to another website, computer, server, or data center via wire (e.g., coaxial cable, fiber optic, digital Subscriber Line (DSL)), or wireless (e.g., infrared, wireless, microwave, etc.). The machine-readable storage medium can be any available medium that can be accessed by a computer or a data storage device, such as a server, a data center, etc., that incorporates one or more of the available media. The usable medium may be a magnetic medium (e.g., floppy Disk, hard Disk, magnetic tape), an optical medium (e.g., digital Video Disk (DVD)), or a semiconductor medium (e.g., solid State Disk (SSD)), among others.
Those of ordinary skill in the art will appreciate that the various illustrative elements and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, or combinations of computer software and electronic hardware. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.
In the several embodiments provided in the present disclosure, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, the division of the units is only one logical division, and other divisions may be realized in practice, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. 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.
The 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 disclosure may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit.
The above description is only for the specific embodiments of the present disclosure, but the scope of the present disclosure is not limited thereto, and any person skilled in the art can easily think of the changes or substitutions within the technical scope of the present disclosure, and shall cover the scope of the present disclosure. Therefore, the protection scope of the present disclosure shall be subject to the protection scope of the claims.
Claims (11)
1. A radio frequency system, comprising:
a radio frequency transceiver;
a radio frequency front end component, comprising:
the first power amplifier is connected with the radio frequency transceiver;
the first radio frequency branch circuit is connected with the first power amplifier and used for transmitting signals of a first communication system;
the second radio frequency branch is connected with the first power amplifier and used for transmitting signals of a second communication system;
one end of the switching device is connected with the first power amplifier, and when the radio frequency system transmits the signal of the first communication system, the other end of the switching device is connected with the first radio frequency branch; when the radio frequency system transmits the signal of the second communication system, the other end of the switch device is connected with the second radio frequency branch.
2. The rf system of claim 1, wherein the rf front-end component comprises an rf front-end transmit chip, and wherein the first power amplifier, the first rf branch, the second rf branch, and the switching device are integrated in the rf front-end transmit chip.
3. The radio frequency system according to claim 2, wherein the signals of the first communication system are 2G signals, and the signals of the second communication system are 4G signals.
4. The radio frequency system of claim 3, wherein the radio frequency front end component further comprises a multi-mode multi-band power amplifier for transmitting 5G signals.
5. The radio frequency system according to claim 4, wherein:
when the radio frequency system transmits a 2G signal, the radio frequency transceiver controls a first radio frequency branch in the radio frequency front end transmitting chip to be in a working state;
when the radio frequency system simultaneously transmits 4G signals and 5G signals, the radio frequency transceiver controls the multimode multi-frequency power amplifier and a second radio frequency branch in the radio frequency front-end transmitting chip to be in a working state.
6. A wireless communication device, comprising:
a baseband system for generating a baseband signal;
a radio frequency system as claimed in any one of claims 1 to 5, arranged to generate a radio frequency signal from the baseband signal.
7. A method for controlling a radio frequency system, the radio frequency system comprising:
a radio frequency transceiver;
a radio frequency front end component, comprising:
the first power amplifier is connected with the radio frequency transceiver;
the first radio frequency branch circuit is connected with the first power amplifier and used for transmitting signals of a first communication system;
the second radio frequency branch is connected with the first power amplifier and used for transmitting signals of a second communication system;
one end of the switch device is connected with the first power amplifier, and when the radio frequency system transmits the signal of the first communication system, the other end of the switch device is connected with the first radio frequency branch; when the radio frequency system transmits the signal of the second communication system, the other end of the switch device is connected with the second radio frequency branch;
the method comprises the following steps:
when the radio frequency system transmits the signal of the first communication system, controlling the other end of the switch device to be connected with the first radio frequency branch;
and when the radio frequency system transmits the signal of the second communication system, controlling the other end of the switch device to be connected with the second radio frequency branch.
8. The method of claim 7, wherein the RF front-end component comprises an RF front-end transmit chip, and wherein the first power amplifier, the first RF branch, the second RF branch, and the switching device are integrated in the RF front-end transmit chip.
9. The control method according to claim 8, wherein the signal of the first communication system is a 2G signal, and the signal of the second communication system is a 4G signal.
10. The control method of claim 9, wherein the radio frequency front end component further comprises a multi-mode multi-band power amplifier configured to transmit 5G signals.
11. The control method according to claim 10, characterized in that:
when the radio frequency system transmits a 2G signal, the radio frequency transceiver is used for controlling a first radio frequency branch in the radio frequency front end transmitting chip to be in a working state;
when the radio frequency system simultaneously transmits 4G signals and 5G signals, the radio frequency transceiver is utilized to control the multimode multi-frequency power amplifier and a second radio frequency branch in the radio frequency front end transmitting chip to be in a working state.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211064936.1A CN115622587A (en) | 2022-09-01 | 2022-09-01 | Radio frequency system, control method thereof and wireless communication equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211064936.1A CN115622587A (en) | 2022-09-01 | 2022-09-01 | Radio frequency system, control method thereof and wireless communication equipment |
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| CN115622587A true CN115622587A (en) | 2023-01-17 |
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| CN202211064936.1A Pending CN115622587A (en) | 2022-09-01 | 2022-09-01 | Radio frequency system, control method thereof and wireless communication equipment |
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| Country | Link |
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| CN (1) | CN115622587A (en) |
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