WO2020199062A1 - Émetteur-récepteur radiofréquence, dispositif de communication et procédé de commande de trajet radiofréquence - Google Patents

Émetteur-récepteur radiofréquence, dispositif de communication et procédé de commande de trajet radiofréquence Download PDF

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Publication number
WO2020199062A1
WO2020199062A1 PCT/CN2019/080701 CN2019080701W WO2020199062A1 WO 2020199062 A1 WO2020199062 A1 WO 2020199062A1 CN 2019080701 W CN2019080701 W CN 2019080701W WO 2020199062 A1 WO2020199062 A1 WO 2020199062A1
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Prior art keywords
wireless communication
control signal
communication service
path
carried
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PCT/CN2019/080701
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English (en)
Chinese (zh)
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陈力
王冰
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华为技术有限公司
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Priority to PCT/CN2019/080701 priority Critical patent/WO2020199062A1/fr
Priority to CN201980095072.XA priority patent/CN113661659B/zh
Publication of WO2020199062A1 publication Critical patent/WO2020199062A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H04B1/44—Transmit/receive switching
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This application relates to the field of communication technology, and in particular to a radio frequency transceiver, communication equipment, and radio frequency channel control method.
  • a TDD radio frame consists of two 5ms half frames, and each half frame contains There are 5 subframes of 1ms length, one subframe includes 2 time slots, and each time slot is 0.5ms, as shown in Figure 1.
  • subframe #1 and subframe #6 can be configured as special subframes.
  • the special subframe includes 3 special time slots, namely, downlink pilot time slot (DwPTS) and guard period (GP). ) And uplink pilot time slot (uplink pilot time slot, UpPTS).
  • the agreement specifies the seven types of uplink-downlink configuration strategies in the TDD LTE communication system shown in Table 1, where U represents the uplink subframe and D represents the downlink subframe. Frame, S represents a special subframe.
  • the switch on the transceiver path in the LTE TDD communication system is based on the radio frame structure of the LTE TDD communication system to switch between the downlink and the uplink switch.
  • the uplink and downlink services in the LTE TDD communication system use subframes as switching points.
  • the position of the special subframe (downlink and uplink service switching point) of each TDD radio frame is fixed on frame #1 and frame #6. Therefore, there are at most two downlink end positions and uplink end positions in a TDD radio frame.
  • the switch of the transmit path includes Switches such as small signal switch, power amplifier switch, and transceiver switch.
  • the switches on the receiving path include switches such as low noise amplifier (LNA).
  • LNA low noise amplifier
  • other services such as the calibration (CAL) service and the frequency domain reflectometer (FDR) service will also affect the switching sequence of the switch on the transceiver path.
  • CAL calibration
  • FDR frequency domain reflectometer
  • the new radio (NR) TDD radio frame contains 10 subframes with a length of 1ms.
  • Each TDD radio frame can be divided into two half frames.
  • the first half frame is 5ms, Contains subframe #0 to subframe #4, the second half frame is 5ms long, and includes subframe #5 to subframe #9.
  • This feature is the same as the LTE communication system, so that NR and LTE can be better compatible.
  • NR in the 5G communication system further defines a more flexible sub-architecture, allowing time slots and character lengths to be defined based on sub-carrier spacing.
  • the number of time slots contained in each subframe can be 1, 2, 4, 8, 16, or 32.
  • the subcarrier intervals corresponding to each subframe are 15KHz, 30KHz, 60KHz, 120KHz, 240KHz, and 480KHz, respectively.
  • Each slot contains 14 symbols, as shown in Figure 2.
  • the control method of the switch on the transceiver path in the LTE TDD communication system can no longer meet the needs of the 5G communication system, and it is urgent to propose A new control method for switches on the receiving and sending channels.
  • This application provides a radio frequency transceiver, a communication device, and a radio frequency channel control method to meet the control requirements of the transceiver channel in an evolved mobile communication system.
  • this application provides a radio frequency transceiver for supporting time division duplex TDD communication.
  • the radio frequency transceiver includes a control circuit, a transmission path, and a reception path.
  • the control circuit is respectively coupled to the transmission path and the reception path, and is used to generate a path control signal according to the uplink and downlink attributes of the time slot symbols in the TDD radio frame, and control the on and off of the transmission path and the on and off of the reception path according to the path control signal.
  • the radio frequency transceiver can control the on and off of the transmitting channel and the on and off of the receiving channel with the granularity of the time slot symbols.
  • the control method is more flexible, which can not only meet the on and off control of the transceiver channel in the 5G TDD communication system, but also Compatible with the on-off control of the transceiver channel in the 4G TDD communication system.
  • the uplink and downlink attributes of the time slot symbols in the TDD radio frame are determined according to the type of wireless communication service carried by the transmitting path and the type of wireless communication service carried by the receiving path.
  • the wireless communication service carried by the transmission path includes at least one of a communication data transmission service, a correction transmission service, and an FDR service
  • the wireless communication service carried by the reception path includes a communication data reception service and a correction reception service. At least one.
  • the radio frequency transceiver further includes a memory for storing the corresponding relationship between the state of the switch and the index value.
  • the switch is used to control the on-off of the transmission path and the on-off of the receiving path.
  • the index The value is determined according to the control signal of the wireless communication service carried by the transmission path and the control signal of the wireless communication service carried by the reception path.
  • the state of the switch corresponding to the index value is determined according to the requirements of the wireless communication service and the wireless communication service carried by the transmission path and the reception path bearer The priority of wireless communication services is determined.
  • the control circuit generates a path control signal according to the uplink and downlink attributes of the time slot symbols in the TDD radio frame, which is specifically used to generate the wireless communication service carried by the transmission path according to the wireless service requirements and the uplink and downlink attributes of the time slot symbols in the TDD radio frame.
  • the control signal and the control signal of the wireless communication service carried by the receiving path determine the target index value according to the control signal of the wireless communication service carried by the transmission path and the control signal of the wireless communication service carried by the receiving path; according to the target index value, from the corresponding The state of the switch corresponding to the target index value is searched in the relationship; according to the state of the switch corresponding to the target index value, a control signal corresponding to the switch is generated, and the control signal corresponding to the switch is a path control signal.
  • the control circuit controls the on and off of the transmitting path and the on and off of the receiving path according to the control signal corresponding to the switch.
  • the control circuit can determine the control signal of the switch on the transmitting path and the control signal of the switch on the receiving path by looking up the corresponding relationship stored in the memory, according to the control signal of the switch on the transmitting path and the switch on the receiving path.
  • the control signal respectively controls the on and off of the transmission path and the on and off of the receiving path.
  • the corresponding relationship stored in the memory can be flexibly configured, so that the on and off strategy of the transmission path and the on and off strategy of the receiving path can be flexibly changed, thereby making the radio frequency
  • the transceiver can support more types of wireless communication services and can expand the usage scenarios of the radio frequency transceiver.
  • the index value in the correspondence stored in the memory may be an N-bit binary number, where N is the total number of wireless communication services carried by the transmission path and the wireless communication services carried by the reception path.
  • the control circuit determines the target index value according to the control signal of the wireless communication service carried by the transmission path and the control signal of the wireless communication service carried by the reception path, it is specifically used for: according to the wireless communication service carried by the transmission path and the wireless communication carried by the reception path.
  • the corresponding relationship between the service and each bit in the index value, the control signal of the wireless communication service carried by the transmitting path and the control signal of the wireless communication service carried by the receiving path determine the value of each bit in the target index value.
  • the bit corresponding to the wireless communication service in the target index value is 1.
  • the bit corresponding to the wireless communication service in the target index value is 0; or when the control signal of the wireless communication service is low, the target index value
  • the bit corresponding to the wireless communication service is 1, and when the control signal of the wireless communication service is at a high level, the bit corresponding to the wireless communication service in the target index value is 0.
  • the radio frequency transceiver further includes a first timing adjustment circuit for before the control circuit determines the target index value according to the control signal of the wireless communication service carried by the transmission path and the control signal of the wireless communication service carried by the reception path ,
  • the effective signal of the control signal of the wireless communication service carried by the transmission path and the effective signal of the control signal of the wireless communication service carried by the receiving path 430 are adjusted to be aligned with the position of the air interface, so as to improve the control circuit’s influence on the transmission path.
  • the on-off and the control accuracy of the receiving channel are adjusted to be aligned with the position of the air interface, so as to improve the control circuit’s influence on the transmission path.
  • the radio frequency transceiver further includes a second timing adjustment circuit, which is used to control the on and off of the receiving path and the on and off of the transmission path according to the control signal corresponding to the switch by the control circuit, respectively, according to whether the switch is on or off.
  • the delay in switching between the on state and the off state and the coordinated response relationship between the switches adjust the control signal corresponding to the switch to further improve the control accuracy of the on-off of the transmitting path and the receiving path by the control circuit.
  • control circuit is further configured to: receive an abnormal control signal, and adjust the path control signal according to the abnormal control signal.
  • this application also provides a TDD communication device, which includes a processor and the radio frequency transceiver described in any one of the possible implementations of the first aspect.
  • the processor is used to configure the uplink and downlink attributes of the time slot symbols in the TDD wireless frame;
  • the radio frequency transceiver is coupled to the processor and is used to generate a channel control signal according to the uplink and downlink attributes of the time slot symbols in the TDD wireless frame, According to the channel control signal, the on-off of the receiving channel and the on-off of the transmitting channel in the radio frequency transceiver are controlled.
  • this application also provides a radio frequency channel control method, which is applied to TDD communication equipment.
  • the method includes: generating a channel control signal according to the uplink and downlink attributes of the time slot symbols in the TDD radio frame; and controlling the TDD according to the channel control signal The on-off of the receiving channel and the on-off of the transmitting channel in the communication equipment.
  • the TDD communication device can control the on and off of the transmitting channel and the on and off of the receiving channel at the granularity of the time slot symbols, and the control method is more flexible. It can not only meet the on-off control of the transceiver channel in the 5G TDD communication system, but also It is compatible with the on-off control of the transceiver channel in the 4G TDD communication system.
  • the uplink and downlink attributes of the time slot symbols in the TDD radio frame are determined according to the type of wireless communication service carried by the transmitting path and the type of wireless communication service carried by the receiving path.
  • the wireless communication service carried by the transmission path includes at least one of a communication data transmission service, a correction transmission service, and an FDR service
  • the wireless communication service carried by the reception path includes a communication data reception service and a correction reception service. At least one.
  • the corresponding relationship between the state of the switch and the index value is stored in the TDD communication device, where the switch is used to control the on-off of the transmission path and the on-off of the receiving path, and the index value is carried by the transmission path.
  • the control signal of the wireless communication service and the control signal of the wireless communication service carried by the receiving channel are determined, and the state of the switch corresponding to the index value is determined according to the wireless communication service demand and the wireless communication service carried by the transmitting channel and the wireless communication service carried by the receiving channel
  • the priority is determined.
  • the TDD communication device can specifically generate a path control signal through the following methods:
  • a control signal corresponding to the switch is generated, and the control signal corresponding to the switch is a path control signal.
  • the TDD device can determine the control signal of the switch on the transmission path and the control signal of the switch on the receiving path by searching the stored correspondence, according to the control signal of the switch on the transmission path and the control of the switch on the receiving path Signal, respectively control the on and off of the transmission path and the on and off of the receiving path, wherein the corresponding relationship stored in the TDD device can be flexibly configured, so that the on and off strategy of the transmission path and the on and off strategy of the receiving path can be flexibly changed, thereby making the
  • the TDD device can support more wireless communication service types, and can expand the usage scenarios of the TDD device.
  • the index value may be represented by an N-bit binary number, where N is the total number of wireless communication services carried by the transmission path and the wireless communication services carried by the reception path.
  • the TDD communication device can specifically determine the target index value in the following manner: according to the correspondence between the wireless communication service carried by the transmission path and the wireless communication service carried by the reception path and each bit in the index value, the wireless communication service carried by the transmission path.
  • the control signal of the communication service and the control signal of the wireless communication service carried by the receiving path determine the value of each bit in the target index value.
  • the bit corresponding to the wireless communication service in the target index value is 1.
  • the bit corresponding to the wireless communication service in the target index value is 0; or when the control signal of the wireless communication service is low, the target index value
  • the bit corresponding to the wireless communication service is 1, and when the control signal of the wireless communication service is at a high level, the bit corresponding to the wireless communication service in the target index value is 0.
  • the TDD communication device further controls the wireless communication service carried by the transmission path before determining the target index according to the control signal of the wireless communication service carried by the transmission path and the control signal of the wireless communication service carried by the reception path.
  • the effective signal in the signal and the effective signal in the control signal of the wireless communication service carried by the receiving path are respectively adjusted to be aligned with the position of the air interface to improve the on-off of the transmission path and the control accuracy of the receiving path.
  • the TDD communication device controls the on and off of the receiving path and the on and off of the transmitting path according to the control signal corresponding to the switch, respectively according to the switch when the switch is switched between the on state and the off state.
  • the delay and the coordinated response relationship between the switches and the adjustment of the control signal corresponding to the switch can further improve the on-off of the transmission path and the control accuracy of the reception path.
  • Figure 1 is a schematic diagram of the structure of a TDD radio frame in an LTE TDD communication system
  • Figure 2 is a schematic diagram of the structure of a TDD radio frame in a 5G communication system
  • Figure 3 shows the control signals of the switches on the transmission path corresponding to different wireless communication services in the traditional LTE TDD communication system
  • FIG. 4 is one of the schematic structural diagrams of a radio frequency transceiver provided by an embodiment of the application.
  • FIG. 5 is a schematic structural diagram of a transmitting channel and a receiving channel provided by an embodiment of the application
  • FIG. 6 is the second structural diagram of a radio frequency transceiver according to an embodiment of the application.
  • FIG. 7 is a schematic diagram of control signals of different wireless communication services provided by an embodiment of this application.
  • FIG. 8 is the third structural diagram of a radio frequency transceiver provided by an embodiment of this application.
  • FIG. 9 is the fourth structural diagram of a radio frequency transceiver according to an embodiment of the application.
  • FIG. 10 is a schematic diagram of the working principle of a radio frequency transceiver provided by an embodiment of the application.
  • FIG. 11 is a schematic structural diagram of a TDD communication device provided by an embodiment of this application.
  • FIG. 12 is a schematic structural diagram of a distributed base station provided by an embodiment of this application.
  • FIG. 13 is a schematic flowchart of a radio frequency channel control method provided by an embodiment of the application.
  • the definition of the TDD radio frame structure is more flexible, allowing time slots and character lengths to be defined according to the subcarrier interval.
  • the number of time slots contained in each subframe can be 1, 2, 4, 8, 16, or 32.
  • the subcarrier intervals corresponding to each subframe are 15KHz, 30KHz, 60KHz, 120KHz, 240KHz, and 480KHz.
  • the traditional LTE TDD communication system is based on the TDD radio frame structure shown in Figure 1 to switch between the downlink and uplink switches. There are at most two downlink end positions and two uplink end positions in a TDD radio frame.
  • the configuration includes two The control signal of the end position of the downlink and the control signal of the wireless communication service including the end position of the two uplinks can be obtained according to the TDD radio frame structure.
  • Figure 3 only shows the control signal of the switch on the transmission path corresponding to different wireless communication services (for example, the power amplifier switch on the transmission path)), in different wireless communication services
  • the response of the control signal of the switch on the transmitting path and the receiving path in the GP interval is different. Therefore, the traditional LTE TDD communication system control method for the transmission and reception channel has been unable to meet the needs of the 5G communication system, and it is urgent to propose a new transmission and reception channel control method.
  • this application provides a radio frequency transceiver, a communication device, and a radio frequency transceiver channel control method.
  • the method and device described in the present application are based on the same concept, and because the method and the device have similar principles for solving the problem, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.
  • the present application provides a radio frequency transceiver 400 for supporting TDD communication.
  • the radio frequency transceiver 400 is applied to a TDD communication device.
  • the TDD communication device may be a terminal device, such as a mobile phone or a wireless transceiver.
  • Computers, virtual reality (VR) equipment, industrial control (industrial control) wireless equipment, etc. can also be network-side equipment, such as next generation node B (gNB) in 5G, radio frequency Remote unit (radio remote unit, RRU), etc.
  • gNB next generation node B
  • RRU radio frequency Remote unit
  • the radio frequency transceiver 400 includes a control circuit 410, a transmission path 420, and a reception path 430.
  • the control circuit 410 is respectively coupled to the transmission path 420 and the reception path 430, and is used to generate a path control signal according to the uplink and downlink attributes of the time slot symbols in the TDD radio frame, and control the on and off of the transmission path 420 and the reception path according to the path control signal. 430 on and off.
  • the control circuit 410 may be implemented by an application specific integrated circuit (ASIC) or a field programmable gate array (FPGA).
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • the radio frequency transceiver provided in the embodiments of the present application is a complete radio frequency transceiver, and also has the structure of known radio frequency transceivers. Here, only the on-off control of the transmission path in the radio frequency transceiver and The components that receive the on-off control of the path will be described, and other components will not be repeated.
  • the protocol specifies the uplink and downlink configuration modes of the 7 LTE TDD frame structures shown in Table 1.
  • the 4G communication system controls the on and off of the radio frequency transceiver channel at the granularity of subframes, and a TDD in the 4G communication system
  • the radio frame includes 10 subframes, each subframe includes two time slots, and each time slot includes 14 time slot symbols.
  • a TDD radio frame in a 5G communication system also includes 10 subframes. Therefore, when TDD in a 5G communication system
  • the uplink and downlink attributes of the time slot symbols included in each subframe in the radio frame are the same.
  • the radio frequency transceiver 400 provided in this application can also When applied to a 4G communication system, that is, the radio frequency transceiver 400 can be compatible with a 4G communication system.
  • the uplink and downlink attributes of the time slot symbols in the TDD radio frame are determined according to the type of wireless communication service carried by the transmit path 420 and the type of wireless communication service carried by the receive path 430, that is, the upper and lower levels of the time slot symbols in the radio frame.
  • the attributes can be configured according to the type of wireless communication service.
  • the upper and lower attributes of the time slot symbols in the TDD radio frame include, but are not limited to, communication data transmission service downlink symbols (used to carry communication data transmission services), correction transmission service downlink symbols (used to carry correction transmission services), and FDR services. Downlink symbols (used to carry the FDR service), communication data reception service uplink symbols (used to carry the communication data reception service), and correction reception service uplink symbols (used to carry the correction reception service).
  • the wireless communication service carried by the transmission path 420 includes at least one of a communication data transmission service, a correction transmission service, and an FDR service
  • the wireless communication service carried by the reception path 430 includes at least one of a communication data reception service and a correction reception service.
  • the radio frequency transceiver 400 can support correction services and FDR services on any time slot symbols, and then perform correction services and FDR services on multiple time slot symbols in a TDD radio frame.
  • the transmission channels of at least two wireless communication services in the transmission path 420 used to carry the communication data transmission service, the correction transmission service and the FDR service may be the same transmission path or different transmission paths, that is, communication data transmission
  • At least two wireless communication services among the service, the correction transmission service and the FDR service can multiplex the same transmission channel, or configure their corresponding transmission channels; similarly, they are used to carry the communication data reception service and the reception channel of the correction reception service
  • It can be the same receiving channel or different receiving channels, that is, the communication data receiving service and the receiving correction service can be multiplexed with the same receiving channel, or the corresponding receiving channels can be configured.
  • the specific wireless communication services carried by the transmission path 420 and the specific wireless communication services carried by the reception path 430 are only examples for illustration and do not limit the embodiment of this application.
  • the specific wireless communication service carried by the transmission path 420 In addition to the above-mentioned services, the communication services and the wireless communication services carried by the receiving path 430 may also be other TDD wireless communication services newly added in the future.
  • the transmission path 420 carrying the communication data transmission service may include a first-stage power amplifier, a second-stage power amplifier, a circulator, and a band pass filter (band pass filter, BPF) and antenna;
  • the receiving path 430 carrying the communication data receiving service may include a receiving feedback switch, a low noise amplifier (LNA), and a low temperature co-fired ceramic connected in sequence.
  • LNA low noise amplifier
  • LTCC low temperature co-fired ceramic connected in sequence.
  • the receiving channel 430 carrying the reception correction service includes: a receiving feedback switch and an antenna connected in sequence.
  • the radio frequency transceiver 400 further includes a memory 440 for storing the corresponding relationship between the state of the switch and the index value, wherein the switch is used to control the on and off of the transmission path 420 and the reception path 430 respectively.
  • the index value is determined according to the control signal of the wireless communication service carried by the transmission path 420 and the control signal of the wireless communication service carried by the receiving path 430.
  • the state of the switch corresponding to the index value is determined according to the requirements of the wireless communication service and the transmission path 420
  • the priority of the wireless communication service and the wireless communication service carried by the receiving path 430 are determined.
  • control circuit 410 generates a path control signal according to the uplink and downlink attributes of the time slot symbols in the TDD radio frame, which is specifically used to generate the transmission path 420 bearer according to the wireless service requirements and the uplink and downlink attributes of the time slot symbols in the TDD radio frame.
  • the control signal of the wireless communication service and the control signal of the wireless communication service carried by the receiving path 430 determine the target index value according to the control signal of the wireless communication service carried by the transmission path 420 and the control signal of the wireless communication service carried by the receiving path 430;
  • the target index value searches for the state of the switch corresponding to the target index value from the correspondence relationship; generates a control signal corresponding to the switch according to the state of the switch corresponding to the target index value, and the control signal corresponding to the switch is a path control signal.
  • the control circuit 410 controls the on-off of the transmitting path 420 and the on-off of the receiving path 430 according to the control signal corresponding to the switch.
  • the memory 440 may be implemented by a storage element such as random access memory (RAM), electrically erasable programmable read-only memory (EEPROM), or look-up table (LUT).
  • RAM random access memory
  • EEPROM electrically erasable programmable read-only memory
  • LUT look-up table
  • the control circuit 410 when the uplink and downlink attributes of each time slot symbol in a time slot in the TDD radio frame are shown in FIG. 7, the control circuit 410 according to the current wireless communication requirements and the uplink and downlink of the time slot symbols shown in FIG. Attributes, generate control signals of the communication data transmission service carried by the transmission path 420, control signals of the communication data reception service carried by the reception path 430, control signals of the correction reception service carried by the reception path 430, and correction transmission services carried by the transmission path 420 The control signal and the control signal of the FDR service carried by the transmission path 420.
  • the index value in the correspondence stored in the memory 440 may be an N-bit binary number, where N is the total number of wireless communication services carried by the transmission path 420 and the wireless communication services carried by the reception path 430.
  • the control circuit 410 determines the target index value according to the control signal of the wireless communication service carried by the transmission path 420 and the control signal of the wireless communication service carried by the reception path 430, it is specifically used for: according to the wireless communication service carried by the transmission path 420 and the reception path
  • the corresponding relationship between the wireless communication service carried by 430 and each bit in the index value, the control signal of the wireless communication service carried by the transmission path 420 and the control signal of the wireless communication service carried by the reception path 430 determine each of the target index values The value of bits; among them, for any one of the wireless communication service carried by the transmission path 420 and the wireless communication service carried by the reception path 430, when the control signal of the wireless communication service is at a high level, the target index value The bit corresponding to the wireless communication service is 1.
  • the index value in the correspondence stored in the memory 440 may be represented by the storage address of each entry in the correspondence in the memory 440.
  • the depth of the memory 440 is at least 2 N and the width It is at least M, and M is the total number of switches on the transmitting path 420 and the receiving path 430 for controlling the on and off of the transmitting path 420 and the receiving path 430.
  • the wireless communication services carried by the transmission path 420 include communication data transmission services, correction transmission services, and FDR services
  • the wireless communication services carried by the reception path 430 include communication data reception services and correction reception services.
  • the index value is 5 bits. Binary numbers.
  • the correspondence between the wireless communication service carried by the transmission path 420 and the wireless communication service carried by the reception path 430 and each bit in the index value is: FDR service, correction reception service, correction transmission service, communication data transmission service, and communication data reception
  • the service corresponds to each bit from high to low in the index value in turn, that is, the FDR service corresponds to the highest bit in the index value, and the receiving service corresponds to the next highest bit in the index value, and so on, communication data
  • the received service corresponds to the lowest bit in the index value.
  • the control signal corresponding to the FDR service When the control signal corresponding to the FDR service is low, the control signal corresponding to the correction receiving service is high, the control signal corresponding to the correction sending service is low, the control signal corresponding to the communication data transmission service is high, and the communication When the control signal corresponding to the data receiving service is at a low level (where a high level indicates that the corresponding control signal is valid, and a low level indicates that the corresponding control signal is invalid), the target index value is 01010.
  • the method of determining the target index value for the control signal of the wireless communication service carried by the path 430 is a possible implementation method for determining the target index value, and does not limit the embodiment of the present application.
  • the control signal of the wireless communication service and the control signal of the wireless communication service carried by the receiving path 430 are converted into a control signal that can uniquely identify the wireless communication service carried by the transmission path 420 and the control signal of the wireless communication service carried by the receiving path 430 corresponds to the switch state
  • the index value method of is applicable to the embodiments of the present application.
  • the radio frequency transceiver 400 further includes a first timing adjustment circuit 450, which is used for the control circuit 410 according to the control signal of the wireless communication service carried by the transmission path 420 and the reception of the wireless communication service carried by the path 430.
  • a first timing adjustment circuit 450 which is used for the control circuit 410 according to the control signal of the wireless communication service carried by the transmission path 420 and the reception of the wireless communication service carried by the path 430.
  • the effective signal of the control signal of the wireless communication service carried by the transmission path 420 and the effective signal of the control signal of the wireless communication service carried by the receiving path 430 are adjusted to be aligned with the position of the air interface. , In order to improve the control accuracy of the control circuit 410 on and off the transmitting path 420 and the receiving path 430.
  • the radio frequency transceiver 400 further includes a second timing adjustment circuit 460, which is used before the control circuit 410 controls the on-off of the receiving channel 430 and the on-off of the transmitting channel 420 according to the control signal corresponding to the switch. , Adjust the control signal corresponding to the switch according to the time delay when the switch is switched between the on state and the off state and the coordinated response relationship between the switches to further improve the on-off of the transmission path 420 by the control circuit 410 And the control accuracy of the receiving channel 430.
  • a second timing adjustment circuit 460 which is used before the control circuit 410 controls the on-off of the receiving channel 430 and the on-off of the transmitting channel 420 according to the control signal corresponding to the switch.
  • control circuit 410 is also used to receive an abnormal control signal, and adjust the path control signal according to the abnormal control signal. Specifically, the control circuit 410 performs logical operations on the abnormal control signal and the path control signal, so that during the time period when the abnormal control signal is valid, the transmitting path 420 and the receiving path 430 respond to the abnormal control signal, and after the abnormal control signal is invalid , The normal response to the path control signal before the abnormal control signal is received.
  • the working principle of the radio frequency transceiver 300 provided in the present application will be described in detail below by taking the transmitting path 420 and the receiving path 430 shown in FIG. 5 as an example.
  • the control circuit 410 generates the control signal of the wireless communication service carried by the transmission path 420 and the control signal of the wireless communication service carried by the reception path 430 according to the wireless service requirements and the uplink and downlink attributes of the time slot symbols in the TDD wireless frame.
  • the wireless communication services carried by the transmission path 420 include communication data transmission services, correction transmission services, and FDR services.
  • the communication data transmission services, correction transmission services, and FDR services share the same transmission path 420
  • the wireless communication services carried by the reception path 430 include The communication data receiving service and the correction receiving service, and the communication data receiving service and the correction receiving service correspond to different receiving paths 430.
  • the first timing adjustment circuit 450 adjusts the effective signal of the control signal of the wireless communication service carried by the transmission path 420 and the effective signal of the control signal of the wireless communication service carried by the receiving path 430 to be aligned with the position of the air interface, respectively.
  • the effective signal in the control signal of the wireless communication service carried by the transmitting path 420 and the effective signal of the control signal of the wireless communication service carried by the receiving path 430 are at a high level.
  • the control circuit 410 performs the wireless communication carried by the transmission path 420 adjusted by the first timing adjustment circuit 450
  • the control signal of the service and the control signal of the wireless communication service carried by the receiving path 430 determine the value of each bit in the target index value; among them, the wireless communication service carried by the transmitting path 420 and the wireless communication service carried by the receiving path 430 are the same as
  • the corresponding relationship of each bit in the index value is: FDR service, correction receiving service, correction sending service, communication data receiving service, and communication data sending service correspond to each bit in the index value from high to low in turn.
  • the control circuit 410 searches for the state of the switch corresponding to the target index value from the corresponding relationship stored in the RAM (or LUT) (in the corresponding relationship, 1 indicates that the corresponding switch is on, and 0 indicates that the corresponding switch is off). ; According to the state of the switch corresponding to the target index value and the control signal of the wireless communication service carried by the transmission path 420 and the control signal of the wireless communication service carried by the receiving path 430, a control signal corresponding to the switch is generated, and the control signal corresponding to the switch is The channel control signal controls the on-off of the transmitting channel 420 and the on-off of the receiving channel 430 according to the control signal corresponding to the switch.
  • control circuit 410 can also adjust the control signal corresponding to the generated switch according to the received abnormal control signal so that the transmitting path 420 and the receiving path 430 respond to the abnormal control signal during the time period when the abnormal control signal is valid, that is, for Some real-time alarms/abnormalities or shutdowns are processed. After the abnormal control signal becomes invalid, the normal response to the path control signal before the abnormal control signal is received.
  • the radio frequency transceiver 400 can control the on-off of the transmitting channel 420 and the on-off of the receiving channel 430 with the granularity of the time slot symbols.
  • the control method is more flexible and can meet the on-off control of the transceiver channel in the 5G TDD communication system. It is also compatible with the on-off control of the transceiver channel in the 4G TDD communication system.
  • the communication device 1100 includes a processor 1110 and the radio frequency transceiver 400 described in any one of the foregoing possible implementation manners, wherein the processing
  • the device 1110 is used to configure the uplink and downlink attributes of the time slot symbols in the TDD radio frame.
  • the radio frequency transceiver 400 is coupled to the processor 1110 for generating a channel control signal according to the uplink and downlink attributes of the time slot symbols in the TDD radio frame.
  • the channel control signal controls the on-off of the receiving channel and the on-off of the transmitting channel in the radio frequency transceiver 400.
  • the TDD communication device 1100 may be a terminal device or a network side device.
  • the TDD communication device 1100 is a distributed base station.
  • the distributed base station includes a baseband unit (BBU) and a remote radio unit (RRU).
  • BBU baseband unit
  • RRU remote radio unit
  • the BBU and RRU pass through Optical fiber connection, the processor 1110 and the radio frequency transceiver 400 are located in the RRU.
  • the present application also provides a radio frequency channel control method, which is applied to a TDD communication device, as shown in FIG. 13, the method mainly includes the following steps:
  • S1301 Generate a channel control signal according to the uplink and downlink attributes of the time slot symbols in the TDD radio frame;
  • S1302 Control the on-off of the receiving channel and the on-off of the transmitting channel in the TDD communication device according to the channel control signal.
  • the uplink and downlink attributes of the time slot symbols in the TDD radio frame are determined according to the type of wireless communication service carried by the transmitting path and the type of wireless communication service carried by the receiving path.
  • the wireless communication service carried by the transmission path includes at least one of a communication data transmission service, a correction transmission service, and a radio frequency reflectometer FDR service
  • the wireless communication service carried by the reception path includes at least one of a communication data reception service and a correction reception service.
  • the corresponding relationship between the state of the switch and the index value is stored in the TDD communication device, where the switch is used to control the on and off of the transmission path and the on and off of the receiving path, and the index value is based on the wireless communication service carried by the transmission path.
  • the control signal and the control signal of the wireless communication service carried by the receiving channel are determined, and the state of the switch corresponding to the index value is determined according to the wireless communication service demand and the priority of the wireless communication service carried by the transmitting channel and the wireless communication service carried by the receiving channel.
  • the TDD communication device can specifically generate a path control signal through the following methods:
  • a control signal corresponding to the switch is generated, and the control signal corresponding to the switch is the path control signal.
  • the TDD communication device can flexibly change the switches on the transmission path and the switches on the reception path by reconfiguring the stored correspondence relationship
  • the control priority that is, the on-off strategy of the transmission path and the on-off strategy of the receiving path can be flexibly changed, so that the TDD communication device can support more wireless communication service types, and can expand the use scenarios of the TDD communication device.
  • the index value may be represented by an N-bit binary number, where N is the total number of wireless communication services carried by the transmission path and the wireless communication services carried by the reception path.
  • the TDD communication device can specifically determine the target index value in the following manner: according to the correspondence between the wireless communication service carried by the transmission path and the wireless communication service carried by the reception path and each bit in the index value, the wireless communication service carried by the transmission path
  • the control signal of the communication service and the control signal of the wireless communication service carried by the receiving path determine the value of each bit in the target index value.
  • the bit corresponding to the wireless communication service in the target index value is 1.
  • the bit corresponding to the wireless communication service in the target index value is 0; or when the control signal of the wireless communication service is low, the target index value
  • the bit corresponding to the wireless communication service is 1, and when the control signal of the wireless communication service is at a high level, the bit corresponding to the wireless communication service in the target index value is 0.
  • the method for determining the target index value is a possible implementation method for determining the target index value, and does not limit the embodiment of the present application. Any wireless communication service that can be carried by the transmission path is controlled The signal and the control signal of the wireless communication service carried by the receiving path are converted into a method that can uniquely identify the control signal of the wireless communication service carried by the transmission path and the index value corresponding to the switch state of the control signal of the wireless communication service carried by the receiving path. In the examples of this application.
  • the TDD communication device also transmits the valid control signal of the wireless communication service carried by the transmission path before determining the target index according to the control signal of the wireless communication service carried by the transmission path and the control signal of the wireless communication service carried by the reception path.
  • the effective signal in the control signal of the wireless communication service carried by the signal and the receiving path is adjusted to be aligned with the position of the air interface respectively to improve the on-off of the transmitting path and the control accuracy of the receiving path.
  • the TDD communication device controls the on-off of the receiving path and the on-off of the transmitting path according to the control signal corresponding to the switch, it is based on the delay when the switch is switched between the on state and the off state and the The coordination response relationship between the switches and the adjustment of the control signal corresponding to the switch can further improve the on-off of the transmission path and the control accuracy of the reception path.
  • the TDD communication device can also adjust the path control signal according to the abnormal control signal. Specifically, the TDD communication device performs logical operations on the abnormal control signal and the path control signal, so that during the time period when the abnormal control signal is valid, the transmitting path and the receiving path respond to the abnormal control signal. After the abnormal control signal is invalid, Normally respond to the path control signal before receiving the abnormal control signal.
  • the TDD communication device can control the on and off of the transmitting channel and the on and off of the receiving channel at the granularity of the time slot symbols, and the control method is more flexible. It can not only meet the on-off control of the transceiver channel in the 5G TDD communication system, but also It is compatible with the on-off control of the transceiver channel in the 4G TDD communication system.
  • These computer program instructions can also be stored in a computer-readable memory that can guide a computer or other programmable data processing equipment to work in a specific manner, so that the instructions stored in the computer-readable memory produce an article of manufacture including the instruction device.
  • the device implements the functions specified in one process or multiple processes in the flowchart and/or one block or multiple blocks in the block diagram.
  • These computer program instructions can also be loaded on a computer or other programmable data processing equipment, so that a series of operation steps are executed on the computer or other programmable equipment to produce computer-implemented processing, so as to execute on the computer or other programmable equipment.
  • the instructions provide steps for implementing functions specified in a flow or multiple flows in the flowchart and/or a block or multiple blocks in the block diagram.

Abstract

L'invention concerne un émetteur-récepteur radiofréquence, un dispositif de communication et un procédé de commande de trajet radiofréquence, de sorte à satisfaire les exigences de commande d'un trajet d'émetteur-récepteur dans un système de communication mobile évolué. L'émetteur-récepteur radiofréquence prend en charge une communication à duplexage par répartition dans le temps (TDD) et comprend un circuit de commande, un trajet de transmission et un trajet de réception. Le circuit de commande est couplé au trajet de transmission et au trajet de réception de sorte à générer un signal de commande de trajet en fonction d'attributs de liaison montante-liaison descendante de symboles de créneau temporel dans une trame radio TDD, et à commander, en fonction du signal de commande de trajet, la connexion et la déconnexion du trajet de transmission et la connexion et la déconnexion du trajet de réception.
PCT/CN2019/080701 2019-03-30 2019-03-30 Émetteur-récepteur radiofréquence, dispositif de communication et procédé de commande de trajet radiofréquence WO2020199062A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PCT/CN2019/080701 WO2020199062A1 (fr) 2019-03-30 2019-03-30 Émetteur-récepteur radiofréquence, dispositif de communication et procédé de commande de trajet radiofréquence
CN201980095072.XA CN113661659B (zh) 2019-03-30 2019-03-30 一种射频收发机、通信设备以及射频通路控制方法

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PCT/CN2019/080701 WO2020199062A1 (fr) 2019-03-30 2019-03-30 Émetteur-récepteur radiofréquence, dispositif de communication et procédé de commande de trajet radiofréquence

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