WO2020133159A1 - Procédé d'échantillonnage de signal d'auto-brouillage, dispositif terminal et dispositif de réseau - Google Patents

Procédé d'échantillonnage de signal d'auto-brouillage, dispositif terminal et dispositif de réseau Download PDF

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Publication number
WO2020133159A1
WO2020133159A1 PCT/CN2018/124686 CN2018124686W WO2020133159A1 WO 2020133159 A1 WO2020133159 A1 WO 2020133159A1 CN 2018124686 W CN2018124686 W CN 2018124686W WO 2020133159 A1 WO2020133159 A1 WO 2020133159A1
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WIPO (PCT)
Prior art keywords
signal
sampling time
uplink signal
length
downlink signal
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PCT/CN2018/124686
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English (en)
Chinese (zh)
Inventor
张治�
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Oppo广东移动通信有限公司
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Priority to CN201880096764.1A priority Critical patent/CN112585878B/zh
Priority to PCT/CN2018/124686 priority patent/WO2020133159A1/fr
Publication of WO2020133159A1 publication Critical patent/WO2020133159A1/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
    • H04B1/50—Circuits using different frequencies for the two directions of communication
    • H04B1/52—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa
    • H04B1/525—Hybrid arrangements, i.e. arrangements for transition from single-path two-direction transmission to single-direction transmission on each of two paths or vice versa with means for reducing leakage of transmitter signal into the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7097—Interference-related aspects

Definitions

  • Embodiments of the present application relate to the field of communications, and in particular, to a method for sampling self-interfering signals, terminal equipment, and network equipment.
  • the terminal equipment may simultaneously support two signals with different subcarrier spacing (SCS) during normal operation, which may cause self-interference between the two signals.
  • SCS subcarrier spacing
  • the terminal equipment can pass Sampling the self-interfering signal to finally eliminate the self-interfering signal.
  • the embodiments of the present application provide a method, a terminal device and a network device for sampling a self-interference signal, which are beneficial to sampling a relatively clean self-interference signal, so as to achieve ideal self-interference cancellation.
  • a method for sampling a self-interfering signal includes: a terminal device receives configuration information sent by a network device, the configuration information is used to indicate a sampling time slot of an uplink signal, and the sampling time slot does not There is a downlink signal, the uplink signal can generate self-interference to the downlink signal, and the subcarrier spacing of the uplink signal and the downlink signal is different.
  • a method for sampling a self-interfering signal includes: a network device sends configuration information to a terminal device, where the configuration information is used to indicate a sampling time slot of an uplink signal, and the sampling time slot does not exist Downlink signal, the uplink signal can generate self-interference to the downlink signal, and the subcarrier spacing between the uplink signal and the downlink signal is different.
  • a terminal device for executing the method in the above-mentioned first aspect or various implementations thereof.
  • the terminal device includes a functional module for performing the method in the above-mentioned first aspect or various implementations thereof.
  • a network device for performing the method in the above-mentioned second aspect or various implementations thereof.
  • the network device includes a functional module for performing the method in the above-mentioned second aspect or various implementations thereof.
  • a terminal device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the first aspect or its various implementations.
  • a network device including a processor and a memory.
  • the memory is used to store a computer program
  • the processor is used to call and run the computer program stored in the memory to execute the method in the above-mentioned second aspect or various implementations thereof.
  • a chip is provided for implementing any one of the above-mentioned first to second aspects or the method in each implementation manner.
  • the chip includes: a processor, configured to call and run a computer program from the memory, so that the device installed with the chip executes any one of the above-mentioned first to second aspects or various implementations thereof method.
  • a computer-readable storage medium for storing a computer program that causes a computer to execute the method in any one of the first to second aspects or the various implementations thereof.
  • a computer program product including computer program instructions, which cause the computer to execute the method in any one of the above first to second aspects or in various implementations thereof.
  • a computer program which, when run on a computer, causes the computer to execute the method in any one of the above first to second aspects or the respective implementations thereof.
  • the network device configures the sampling slot of the uplink signal to the terminal device, and the downlink signal is not sent in the sampling slot, so that the downlink signal is not mixed when the uplink signal is sampled in the sampling slot, so that it can obtain
  • the relatively clean upstream signal enables the self-interference cancellation of the upstream signal to the downstream signal to achieve a more ideal effect.
  • FIG. 1 is a schematic diagram of a communication system architecture provided by an embodiment of the present application.
  • FIG. 2 is a schematic diagram of a method for sampling a self-interference signal provided by an embodiment of the present application.
  • FIG. 3 is a schematic diagram of symbol lengths of high-frequency signals and low-frequency signals in an embodiment of the present application.
  • FIG. 4 is another schematic diagram of a method for sampling a self-interference signal provided by an embodiment of the present application.
  • FIG. 5 is a schematic block diagram of a terminal device provided by an embodiment of the present application.
  • FIG. 6 is a schematic block diagram of a network device provided by an embodiment of the present application.
  • FIG. 7 is another schematic block diagram of the terminal device provided by the embodiment of the present application.
  • FIG. 8 is another schematic block diagram of the network device provided by the embodiment of the present application.
  • FIG. 9 is a schematic block diagram of a chip provided by an embodiment of the present application.
  • FIG. 10 is a schematic block diagram of a communication system provided by an embodiment of the present application.
  • GSM Global System
  • CDMA Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Advanced Long Term Evolution
  • NR New Radio
  • evolution system of NR system LTE (LTE-based access to unlicensed spectrum) system on unlicensed spectrum, NR (NR-based access to unlicensed spectrum) system on unlicensed spectrum unlicensed spectrum (NR-U) system, universal mobile communication system (Universal Mobile Telecommunication System, UMTS), wireless local area network (Wireless Local Area Areas, WLAN), wireless fidelity (Wireless Fidelity, WiFi), next-generation communication system or other communications System etc.
  • D2D Device to Device
  • M2M machine-to-machine
  • MTC machine-type communication
  • V2V vehicle-to-vehicle
  • the embodiments of the present application do not limit the applied frequency spectrum.
  • the embodiments of the present application may be applied to licensed spectrum or unlicensed spectrum.
  • the communication system 100 applied in the embodiment of the present application is shown in FIG. 1.
  • the communication system 100 may include a network device 110, and the network device 110 may be a device that communicates with a terminal device 120 (or referred to as a communication terminal, terminal).
  • the network device 110 can provide communication coverage for a specific geographic area, and can communicate with terminal devices located within the coverage area.
  • the network device 110 may be a base station (Base Transceiver Station, BTS) in a GSM system or a CDMA system, a base station (NodeB, NB) in a WCDMA system, or an evolved base station in an LTE system (Evolutional Node B, eNB or eNodeB), or a wireless controller in the Cloud Radio Access Network (CRAN), or the network equipment can be a mobile switching center, a relay station, an access point, an in-vehicle device, Wearable devices, hubs, switches, bridges, routers, network-side devices in 5G networks or network devices in future public land mobile networks (Public Land Mobile Network, PLMN), etc.
  • BTS Base Transceiver Station
  • NodeB, NB base station
  • LTE Long Term Evolutional Node B
  • eNodeB evolved base station in an LTE system
  • CRAN Cloud Radio Access Network
  • the network equipment can be a mobile switching center, a relay station, an access point, an in-veh
  • the communication system 100 also includes at least one terminal device 120 within the coverage of the network device 110.
  • terminal equipment includes but is not limited to user equipment (User Equipment (UE), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, Terminal, wireless communication device, user agent or user device.
  • UE User Equipment
  • Access terminals can be cellular phones, cordless phones, Session Initiation Protocol (SIP) phones, wireless local loop (Wireless Local Loop, WLL) stations, personal digital processing (Personal Digital Assistant (PDA), wireless communication Functional handheld devices, computing devices, or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks or public land mobile communications networks (PLMN) in the future evolution Terminal devices and the like are not limited in the embodiments of the present invention.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • wireless communication Functional handheld devices computing devices, or other processing devices connected to wireless modems
  • in-vehicle devices wearable devices
  • terminal devices in future 5G networks or public land mobile communications networks (PLMN) in the future evolution Terminal devices and the like are not limited in the embodiments of the present invention.
  • terminal device 120 may perform direct terminal (Device to Device, D2D) communication.
  • D2D Direct terminal
  • the 5G system or 5G network may also be referred to as a New Radio (NR) system or NR network.
  • NR New Radio
  • FIG. 1 exemplarily shows one network device and two terminal devices.
  • the communication system 100 may include multiple network devices and each network device may include other numbers of terminal devices within the coverage area. This application The embodiment does not limit this.
  • the communication system 100 may further include other network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.
  • network entities such as a network controller and a mobility management entity, which is not limited in the embodiments of the present application.
  • the devices with communication functions in the network/system in the embodiments of the present application may be referred to as communication devices.
  • the communication device may include a network device 110 and a terminal device 120 with a communication function, and the network device 110 and the terminal device 120 may be the specific devices described above, which will not be repeated here.
  • the communication device may also include other devices in the communication system 100, such as network controllers, mobility management entities, and other network entities, which are not limited in the embodiments of the present application.
  • various self-interference signals are generated, that is, signals generated/emitted inside the terminal, which interfere with the normal reception of the terminal.
  • the source of self-interference signal it can be divided into three categories.
  • the first type of self-interfering signal is harmonic or intermodulation interference generated by one or several transmitted signals of the cellular system.
  • This type of self-interfering signal is a more obvious type of interfering signal in cellular communication systems.
  • There is a frequency multiplication relationship between the transmitted signal and the received signal inside the terminal such as 2 frequency multiplication, 3 frequency multiplication, and 4 frequency multiplication. Generally speaking, this frequency multiplication relationship is less than or equal to 5, it is more serious and needs to be resolved.
  • the second type of self-interference signal comes from the interference between different wireless communication modules inside the terminal, among which the interference between WiFi signal and cellular signal is more obvious.
  • the third type of interference mainly originates from the electromagnetic waves generated by some active electronic devices inside the terminal.
  • This type of interference is mainly caused by the display screen of the terminal, the memory reading operation of the terminal, and the electromagnetic waves generated by the device such as the camera and electric motor of the terminal.
  • the frequency of this type of electromagnetic wave is roughly in the range of tens of MHz to hundreds of MHz.
  • This type of interference stems from whether certain components are used. For example, for interference from the display screen, if the display screen is not turned on, the interference does not exist. The interference generated by the electric motor only exists when it is turned on. Another characteristic of this type of interference is that the frequency of such interference is relatively fixed and its bandwidth is generally narrow. This type of interference is also interference that needs to be addressed in the present invention.
  • terminal devices supporting millimeter wave or high frequency have appeared. Since the frequency bands of terminal devices supporting FR2 are relatively high, they are generally above 26G, and their propagation attenuation is very serious.
  • the terminal device In order to maintain a continuous connection with the cellular network, at this time, the terminal device often also connects to the network through the low frequency band (frequency range 1, FR1), the frequency of FR1 is generally lower than 7G, so that the terminal device that supports FR2 is working normally , Often maintain a low-band wireless connection and millimeter-wave band wireless connection at the same time.
  • the wireless signal is first generated on the baseband, and the signal generated from the baseband is mixed with a radio frequency signal of the same frequency as the target carrier, and the result is that the baseband signal is moved to the target carrier.
  • This is the basic principle of wireless signal mixing.
  • this principle is basically used to realize the movement of the baseband signal to the target carrier (radio frequency signal).
  • FR2 signals the problem is more complicated.
  • the carrier frequency of the FR2 signal is very high, above 26G; while the frequency of the baseband signal that generally carries information is between tens of M and hundreds of M, if the baseband signal corresponding to FR2 is directly moved to the carrier above 26G by mixing In terms of frequency, if the frequency gap between the two is too large, it will be difficult to achieve.
  • the first step is to mix the baseband signal to be moved with an intermediate frequency signal and move it to an intermediate frequency (the frequency where the intermediate frequency signal is located); the second step Then, the intermediate frequency signal containing the baseband signal is mixed and further moved to the frequency of the target FR2.
  • the core of the above solution is the introduction of an intermediate frequency signal.
  • This intermediate frequency signal and the baseband signal and the target frequency of FR2 should not have a particularly large frequency difference. For millimeter wave signals above 26G, this intermediate frequency signal is possible between 8G and 12G.
  • the 8G ⁇ 12G intermediate frequency signal may have frequency doubling relationship with many FR1 signals, which may cause self-interference.
  • two types of self-interference will occur: 1.
  • the harmonics of the FR1 transmitted signal interfere with the FR2 intermediate frequency signal, so that the FR1 transmitted signal pairs FR2's baseband reception produces interference; 2.
  • the harmonics of the FR1 received signal are mixed with the FR2's intermediate frequency transmit signal, so that the FR2's transmitted signal interferes with the FR1's baseband reception.
  • the basic principle of self-interference cancellation on the terminal side is to couple a part of the transmitted signal or the intermediate frequency signal corresponding to the transmitted signal as a reference signal, and then apply corresponding gain, delay, and phase adjustment to the reference signal to construct a self-interference signal. Cancellation signals with equal power and opposite phases, finally achieve destructive interference cancellation of self-interfering signals at the receiving end or intermediate frequency end.
  • the above process is essentially to implement a self-interference reconstruction model inside the terminal.
  • the self-interference cancellation technology on the terminal side can be divided into digital and analog.
  • the radio frequency signal transmitted from the terminal side is directly sampled, the interference signal is reconstructed by the sampling signal, and then eliminated at the radio frequency front end.
  • the transmitted signal is sampled through the baseband signal, the interference signal is reconstructed on the baseband, and then eliminated on the baseband. Regardless of which technique is used, it depends on sampling the transmitted signal and then reconstructing it into an interference signal in some way to cancel the actual interference signal.
  • the key to the above process is how to sample the transmitted signal or the intermediate frequency signal, and collecting a relatively clean transmitted signal/intermediate frequency signal is an important prerequisite for reconstructing the interference signal. If the sampled transmitted signal/intermediate frequency signal is contaminated, such as mixed with the downlink received signal, then the reconstructed interference signal can not reflect the real interference signal, and the subsequent cancellation effect will certainly not be ideal.
  • FIG. 2 shows a schematic block diagram of a method 200 for sampling a self-interfering signal according to an embodiment of the present application. As shown in FIG. 2, the method 200 includes some or all of the following:
  • the terminal device receives configuration information sent by the network device.
  • the configuration information is used to indicate a sampling time slot of the uplink signal. There is no downlink signal in the sampling time slot.
  • the uplink signal can generate self-interference to the downlink signal.
  • the subcarrier spacing between the uplink signal and the downlink signal is different.
  • the embodiments of the present application are mainly directed to the self-interference between the aforementioned FR1 and FR2 signals. Specifically, it can be divided into two categories: 1. The transmission of the FR1 signal interferes with the received signal of the FR2. 2. The impact of the FR2 signal transmission on the FR1 signal reception.
  • the corresponding self-interference cancellation method is also corresponding: for the first category, the FR1 transmitted signal is sampled and eliminated on the FR2 intermediate frequency signal; for the second category, the FR2 intermediate frequency signal is sampled in the FR1 Eliminate at the receiving end.
  • the uplink signal in the embodiment of the present application may be an FR1 signal, and the downlink signal may be an FR2 signal; or the uplink signal may be an FR2 signal, and the downlink signal may be an FR1 signal.
  • the FR1 signal may be referred to as a low-frequency signal
  • the FR2 signal may be referred to as a high-frequency signal.
  • the subcarrier spacing of the FR1 signal and the FR2 signal is different.
  • the SCS of the FR1 signal is generally 15kHz and 30kHz
  • the SCS of the FR2 signal is generally 120kHz and 240kHz.
  • the network device may configure a suitable sampling time slot for the terminal device, and within the sampling time slot, the terminal device may collect uplink signals, and the network device will not schedule downlink signals during this period. In this way, it can be ensured that the terminal device samples a clean uplink signal, and then the self-interference signal can be eliminated at the receiving end or the intermediate frequency end.
  • the network device may refer to some parameters and configure the sampling time slot for the terminal device by itself. For example, the network device may determine the appropriate sampling time slot according to the SCS relationship between the uplink signal and the downlink signal.
  • the upstream signal is the FR1 signal
  • the downstream signal is the FR2 signal
  • the SCS of the FR1 signal can be 30 kHz
  • the SCS of the FR2 signal can be 120 kHz
  • the relationship between the symbol length of the FR1 signal and the symbol length of the FR2 signal can refer to FIG. 3, that is to say, There are 4 symbols of FR2 signal within the duration of one symbol of FR1 signal.
  • the network device may determine the sampling time slot according to a multiple relationship between a symbol length of the FR1 signal and a symbol length of the FR2 signal.
  • the network device may determine the sampling time slot of the FR1 signal as one or more symbols of the FR2 signal.
  • the sampling time slot of the FR1 signal determined by the network device may not exceed one symbol length of the FR1 signal.
  • the sampling time slot of the FR1 signal may be 1 to 4 times the symbol length of the FR2 signal.
  • the upstream signal is the FR2 signal
  • the downstream signal is the FR1 signal
  • the SCS of the FR1 signal may be 30 kHz
  • the SCS of the FR2 signal may be 120 kHz
  • the relationship between the symbol length of the FR1 signal and the symbol length of the FR2 signal may refer to FIG. 3, that is, That is, there are 4 symbols of the FR2 signal within the duration of one symbol of the FR1 signal.
  • the network device may determine the sampling time slot according to a multiple relationship between a symbol length of the FR1 signal and a symbol length of the FR2 signal.
  • the network device may determine the sampling time slot of the FR2 signal as one or more symbols of the FR2 signal, that is, the network device may be configured to sample one or more FR2 signals within the sampling time slot of the FR2 signal.
  • the sampling time slot of the FR2 signal determined by the network device may not exceed one symbol length of the FR1 signal. As shown in FIG. 3, the sampling time slot of the FR2 signal may be 1 to 4 times the symbol length of the FR2 signal.
  • the network device configures the sampling slot of the uplink signal to the terminal device, it needs to indicate the specific position of the sampling slot in the time domain.
  • the uplink signal is an FR1 signal
  • the downlink signal is an FR2 signal
  • the configuration information includes at least two types of information in the following information: the length of the sampling slot and the start time of the sampling slot Position and end time position of the sampling slot, wherein the length of the sampling slot is a multiple of P of the symbol length of the FR2 signal, P is a positive integer, and N ⁇ P ⁇ M.
  • the uplink signal is an FR2 signal
  • the downlink signal is an FR1 signal
  • the configuration information includes the position of the symbol of the first FR1 signal in the time domain and P number of symbols within the symbol of the first FR1 signal
  • P is a positive integer and N ⁇ P ⁇ M.
  • the network device needs to indicate to the terminal device at least two of the length of the sampling slot of the FR1 signal, the start position of the sampling slot, and the end position of the sampling slot .
  • the length of the sampling time slot can be indicated directly or indirectly.
  • a length of time may be directly indicated, and the terminal device and the network device may also agree on a reference time unit.
  • the network device indicates the length of the sampling time slot by indicating a multiple of the reference time unit.
  • the reference time unit may be FR2 signal One symbol length.
  • the starting position may include, for example, the slot number of the starting position and the specific symbol position in the slot, or may only include the slot number of the starting position, and the network device and the terminal device may agree that the starting position is within a slot number Symbol for a specific location.
  • the indication of the end position is similar to the start position.
  • the network device needs to indicate to the terminal device the time domain position of one or more symbols of the FR2 signal to be sampled within the sampling slot of the FR2 signal.
  • the network device may indicate to the terminal device the specific position of each FR2 signal symbol in the time domain, which may include the slot number where the symbol is located and the symbol position in the slot.
  • the symbol position in the slot may also be a symbol of a specific position in a slot agreed by the terminal device and the network device.
  • the symbols of multiple FR2 signals indicated by the network device may or may not be continuous in the time domain.
  • the symbols of the multiple FR2 signals may belong to the symbols of one FR1 signal, or may belong to the symbols of different FR1 signals.
  • the network device may indicate to the terminal device which signal or symbols of the FR2 signal are sampled within the duration of one symbol of the FR1 signal, then the network device also needs to indicate to the terminal device that the symbol of the FR1 signal is
  • the position in the time domain for example, can indicate the slot number or the symbol position within the slot, and the position of the symbol of the FR1 signal in the time domain can also pass the start symbol position and/or end of the symbol of the FR1 signal Symbol position representation.
  • the FR1 signal needs to be sampled, but within the duration of one FR2 symbol A complete FR1 signal cannot be sampled; in order to eliminate the second type of interference, the FR2 signal needs to be sampled, and multiple FR2 signals can be sampled within the duration of one FR1 symbol.
  • how to select the sampling time slot may be related to the terminal's ability to eliminate self-interference. Different terminals may have sampling slots that require different lengths.
  • the network device can configure the sampling time slot of the uplink signal for the terminal device itself, the network device can also configure the appropriate sampling time slot for the terminal device according to the capability information reported by the terminal device. Specifically, the terminal device may report to the network device through the physical layer, the Media Access Control (MAC) layer, or the Radio Resource Control (RRC) signaling.
  • MAC Media Access Control
  • RRC Radio Resource Control
  • the terminal device may report the minimum sampling time length of the uplink signal to the network device. That is, the sampling time slot configured by the network device for the terminal device cannot be less than the minimum sampling time length. If it is less than the minimum sampling time length, the upstream signal sampled by the terminal device in the sampling time slot may not be complete enough Affect the elimination of self-interfering signals.
  • the terminal device may first determine the minimum sampling time length.
  • the terminal device may determine the minimum sampling time length according to the SCS of the uplink signal and the SCS of the downlink signal.
  • the uplink signal is an FR1 signal and the downlink signal is an FR2 signal
  • the terminal device determines the minimum sampling according to a ratio M of the subcarrier interval of the FR2 signal to the subcarrier interval of the FR1 signal Time length, wherein the minimum sampling time length is N times the symbol length of the FR2 signal, and N is a positive integer less than or equal to M.
  • the uplink signal is an FR2 signal and the downlink signal is an FR1 signal
  • the terminal device determines the minimum sampling according to a ratio M of the subcarrier interval of the FR2 signal to the subcarrier interval of the FR1 signal Time length, wherein the minimum sampling time length is N times the symbol length of the FR2 signal, and N is a positive integer less than or equal to M.
  • the terminal device may also report the maximum sampling time length of the uplink signal to the network device, that is, the sampling time slot configured by the network device for the terminal device cannot exceed the maximum sampling time length. If the maximum sampling time length is exceeded, although a relatively complete upstream signal can be obtained, the performance of the entire communication system will be reduced. For example, for the influence of the transmission of the FR1 signal on the reception of the FR2 signal, the maximum sampling time length may be one symbol length of the FR1 signal.
  • the SCS of the upstream signal is 30 kHz
  • the SCS of the downstream signal is 120 kHz.
  • the SCS of the downstream signal is 4 times the SCS of the upstream signal
  • the symbol length of the upstream signal is 4 times the symbol length of the downstream signal.
  • the terminal device can select the minimum symbol length of a few downstream signals to sample the upstream signal according to its own capabilities, for example, it can be 1 to 4, and report the number to the network device. After the network device obtains the number, it can obtain The minimum sampling time length is 1 to 4 times the symbol length of the downlink signal.
  • the SCS of the upstream signal is 120 kHz
  • the SCS of the downstream signal is 30 kHz.
  • the SCS of the upstream signal is 4 times the SCS of the downstream signal
  • the symbol length of the downstream signal is 4 times the symbol length of the upstream signal.
  • the terminal device can select a signal that needs to sample at least a few uplink signal symbols within the symbol length of a downlink signal according to its own capabilities, for example, it can be 1 to 4, and report the number to the network device. After the number is obtained, the minimum sampling time length can be obtained as 1 to 4 times the symbol length of the downlink signal.
  • the minimum sampling time length reported by the terminal device to the network device is expressed in terms of the symbol length of the FR2 signal as a unit, and the terminal device may also agree with the network device to report in other reference time units.
  • the symbol length of the uplink signal is 4 times the symbol length of the downlink signal
  • the minimum sampling time length determined by the terminal device is 2 times the symbol length of the downlink signal
  • the reference time unit is 0.5 times the symbol length of the downlink signal.
  • the network device may also configure the length of the sampling time slot to the terminal device in units of the reference time unit. For example, 5.
  • FIG. 4 is a schematic block diagram of a method 300 for sampling a self-interference signal provided by an embodiment of the present application. As shown in FIG. 4, the method 300 includes some or all of the following:
  • the network device sends configuration information to the terminal device.
  • the configuration information is used to indicate a sampling time slot of the uplink signal. There is no downlink signal in the sampling time slot.
  • the uplink signal can cause self-interference to the downlink signal.
  • the subcarrier spacing of the uplink signal and the downlink signal is different.
  • the method further includes: the network device receiving a minimum sampling time length of the uplink signal reported by the terminal device; the network device according to the minimum sampling time length To determine the sampling time slot.
  • the uplink signal is a low-frequency signal
  • the downlink signal is a high-frequency signal
  • the minimum sampling time length is N times the symbol length of the downlink signal.
  • the length of the slot is a multiple of P of the symbol length of the downlink signal
  • N is less than or equal to the ratio M of the subcarrier spacing of the downlink signal to the subcarrier spacing of the uplink signal, N ⁇ P ⁇ M, N, P and M is a positive integer.
  • the uplink signal is a high-frequency signal
  • the downlink signal is a low-frequency signal
  • the minimum sampling time length is N times the symbol length of the uplink signal
  • the sampling time The length of the slot is a multiple of P of the symbol length of the uplink signal
  • N is less than or equal to the ratio M of the subcarrier spacing of the downlink signal to the subcarrier spacing of the uplink signal
  • N ⁇ P ⁇ M, N, P and M is a positive integer.
  • the configuration information includes at least two kinds of information in the following information: the length of the sampling slot, the start time position of the sampling slot, and the End time position.
  • the configuration information includes a position of a symbol of the first downlink signal in the time domain and P number of uplink signals within the symbol of the first downlink signal The position of each symbol of the uplink signal in the time domain in the symbol of.
  • the interaction and related characteristics and functions between the network device and the terminal device described by the network device correspond to the related characteristics and functions of the terminal device. That is, what message the network device sends to the terminal device, and the terminal device receives the corresponding message from the network device.
  • FIG. 5 shows a schematic block diagram of a terminal device 400 according to an embodiment of the present application.
  • the terminal device 400 includes:
  • the transceiver unit 410 is configured to receive configuration information sent by a network device, and the configuration information is used to indicate a sampling time slot of an uplink signal. There is no downlink signal in the sampling time slot, and the uplink signal can generate the downlink signal. For self-interference, the subcarrier spacing between the uplink signal and the downlink signal is different.
  • the transceiver unit is further configured to: report the minimum sampling time length of the uplink signal to the network device.
  • the terminal device further includes: a processing unit, configured to determine the minimum sampling time length.
  • the processing unit is specifically configured to determine the minimum sampling time length according to the subcarrier interval of the uplink signal and the subcarrier interval of the downlink signal.
  • the uplink signal is a low-frequency signal
  • the downlink signal is a high-frequency signal
  • the processing unit is specifically configured to: according to the subcarrier interval of the downlink signal and the uplink signal
  • the ratio M of the subcarrier intervals of M determines the minimum sampling time length, where the minimum sampling time length is N times the symbol length of the downlink signal, and N is a positive integer less than or equal to M.
  • the uplink signal is a high-frequency signal
  • the downlink signal is a low-frequency signal
  • the processing unit is specifically configured to: according to the subcarrier interval of the uplink signal and the downlink signal
  • the ratio M of the subcarrier intervals of M determines the minimum sampling time length, where the minimum sampling time length is N times the symbol length of the uplink signal, and N is a positive integer less than or equal to M.
  • the configuration information includes at least two kinds of information in the following information: the length of the sampling slot, the start time position of the sampling slot, and the End time position, where the length of the sampling slot is a multiple of P of the symbol length of the downlink signal, P is a positive integer, and N ⁇ P ⁇ M.
  • the configuration information includes a position of a symbol of the first downlink signal in the time domain and P number of uplink signals within the symbol of the first downlink signal The position of each of the uplink signals in the symbol in the time domain, where P is a positive integer and N ⁇ P ⁇ M.
  • the processing unit is further configured to sample the uplink signal in the sampling time slot.
  • terminal device 400 may correspond to the terminal device in the method embodiment of the present application, and the above and other operations and/or functions of each unit in the terminal device 400 are respectively for realizing the terminal in the method of FIG. 2 The corresponding process of the device will not be repeated here for brevity.
  • FIG. 6 shows a schematic block diagram of a network device 500 according to an embodiment of the present application.
  • the network device 500 includes:
  • the transceiver unit 510 is used to send configuration information to the terminal device, where the configuration information is used to indicate a sampling time slot of the uplink signal. There is no downlink signal in the sampling time slot, and the uplink signal can be generated from the downlink signal. Interference, the subcarrier spacing between the uplink signal and the downlink signal is different.
  • the transceiver unit is further configured to: receive a minimum sampling time length of the uplink signal reported by the terminal device; the network device further includes: a processing unit, configured to The minimum sampling time length determines the sampling time slot.
  • the uplink signal is a low-frequency signal
  • the downlink signal is a high-frequency signal
  • the minimum sampling time length is N times the symbol length of the downlink signal.
  • the length of the slot is a multiple of P of the symbol length of the downlink signal
  • N is less than or equal to the ratio M of the subcarrier spacing of the downlink signal to the subcarrier spacing of the uplink signal, N ⁇ P ⁇ M, N, P and M is a positive integer.
  • the uplink signal is a high-frequency signal
  • the downlink signal is a low-frequency signal
  • the minimum sampling time length is N times the symbol length of the uplink signal
  • the sampling time The length of the slot is a multiple of P of the symbol length of the uplink signal
  • N is less than or equal to the ratio M of the subcarrier spacing of the downlink signal to the subcarrier spacing of the uplink signal
  • N ⁇ P ⁇ M, N, P and M is a positive integer.
  • the configuration information includes at least two kinds of information in the following information: the length of the sampling slot, the start time position of the sampling slot, and the End time position.
  • the configuration information includes a position of a symbol of the first downlink signal in the time domain and P number of uplink signals within the symbol of the first downlink signal The position of each symbol of the uplink signal in the time domain in the symbol of.
  • the network device 500 may correspond to the network device in the method embodiment of the present application, and the above and other operations and/or functions of each unit in the network device 500 are respectively for implementing the network in the method of FIG. 4 The corresponding process of the device will not be repeated here for brevity.
  • an embodiment of the present application further provides a terminal device 600, which may be the terminal device 400 in FIG. 5, which can be used to execute the content of the terminal device corresponding to the method 200 in FIG. .
  • the terminal device 600 shown in FIG. 7 includes a processor 610, and the processor 610 can call and run a computer program from the memory to implement the method in the embodiments of the present application.
  • the terminal device 600 may further include a memory 620.
  • the processor 610 can call and run a computer program from the memory 620 to implement the method in the embodiments of the present application.
  • the memory 620 may be a separate device independent of the processor 610, or may be integrated in the processor 610.
  • the terminal device 600 may further include a transceiver 630, and the processor 610 may control the transceiver 630 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by the device.
  • the transceiver 630 may include a transmitter and a receiver.
  • the transceiver 630 may further include antennas, and the number of antennas may be one or more.
  • the terminal device 600 may be the terminal device of the embodiment of the present application, and the terminal device 600 may implement the corresponding process implemented by the terminal device in each method of the embodiment of the present application.
  • the transceiver unit in the terminal device 400 may be implemented by the transceiver 630 in FIG. 7.
  • the processing unit in the terminal device 400 may be implemented by the processor 610 in FIG. 7.
  • an embodiment of the present application further provides a network device 700.
  • the network device 700 may be the network device 500 in FIG. 6, which can be used to execute the content of the network device corresponding to the method 300 in FIG. 4. .
  • the network device 700 shown in FIG. 8 includes a processor 710, and the processor 710 can call and run a computer program from the memory to implement the method in the embodiments of the present application.
  • the network device 700 may further include a memory 720.
  • the processor 710 can call and run a computer program from the memory 720 to implement the method in the embodiments of the present application.
  • the memory 720 may be a separate device independent of the processor 710, or may be integrated in the processor 710.
  • the network device 700 may further include a transceiver 730, and the processor 710 may control the transceiver 730 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by the device.
  • the processor 710 may control the transceiver 730 to communicate with other devices, specifically, may send information or data to other devices, or receive other Information or data sent by the device.
  • the transceiver 730 may include a transmitter and a receiver.
  • the transceiver 730 may further include antennas, and the number of antennas may be one or more.
  • the network device 700 may be the network device of the embodiment of the present application, and the network device 700 may implement the corresponding process implemented by the network device in each method of the embodiment of the present application, and for the sake of brevity, no further description is provided here.
  • the processing unit in the network device 500 may be implemented by the processor 710 in FIG. 8.
  • the transceiver unit in the network device 500 may be implemented by the transceiver 730 in FIG. 8.
  • FIG. 9 is a schematic structural diagram of a chip according to an embodiment of the present application.
  • the chip 800 shown in FIG. 9 includes a processor 810, and the processor 810 can call and run a computer program from the memory to implement the method in the embodiment of the present application.
  • the chip 800 may further include a memory 820.
  • the processor 810 can call and run a computer program from the memory 820 to implement the method in the embodiments of the present application.
  • the memory 820 may be a separate device independent of the processor 810, or may be integrated in the processor 810.
  • the chip 800 may further include an input interface 830.
  • the processor 810 can control the input interface 830 to communicate with other devices or chips. Specifically, it can obtain information or data sent by other devices or chips.
  • the chip 800 may further include an output interface 840.
  • the processor 810 can control the output interface 840 to communicate with other devices or chips. Specifically, it can output information or data to other devices or chips.
  • the chip can be applied to the network device in the embodiment of the present application, and the chip can implement the corresponding process implemented by the network device in each method of the embodiment of the present application.
  • the chip can be applied to the terminal device in the embodiments of the present application, and the chip can implement the corresponding process implemented by the terminal device in each method of the embodiments of the present application.
  • chips mentioned in the embodiments of the present application may also be referred to as system-on-chips, system chips, chip systems, or system-on-chip chips.
  • the communication system 900 includes a terminal device 910 and a network device 920.
  • the terminal device 910 can be used to implement the corresponding functions implemented by the terminal device in the above method
  • the network device 920 can be used to implement the corresponding functions implemented by the network device in the above method.
  • the processor in the embodiments of the present application may be an integrated circuit chip, which has signal processing capabilities.
  • each step of the foregoing method embodiment may be completed by an integrated logic circuit of hardware in a processor or instructions in the form of software.
  • the aforementioned processor may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (Application Specific Integrated Circuit, ASIC), an existing programmable gate array (Field Programmable Gate Array, FPGA), or other available Programming logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC Application Specific Integrated Circuit
  • FPGA Field Programmable Gate Array
  • the methods, steps, and logical block diagrams disclosed in the embodiments of the present application may be implemented or executed.
  • the general-purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the steps of the method disclosed in conjunction with the embodiments of the present application may be directly embodied and executed by a hardware decoding processor, or may be executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a mature storage medium in the art, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, and registers.
  • the storage medium is located in the memory, and the processor reads the information in the memory and completes the steps of the above method in combination with its hardware.
  • the memory in the embodiments of the present application may be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory.
  • the non-volatile memory may be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electronically Erasable programmable read only memory (Electrically, EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM DDR SDRAM
  • enhanced SDRAM ESDRAM
  • Synchlink DRAM SLDRAM
  • Direct Rambus RAM Direct Rambus RAM
  • the memory in the embodiments of the present application may also be static random access memory (static RAM, SRAM), dynamic random access memory (dynamic RAM, DRAM), Synchronous dynamic random access memory (synchronous) DRAM (SDRAM), double data rate synchronous dynamic random access memory (double data) SDRAM (DDR SDRAM), enhanced synchronous dynamic random access memory (enhanced SDRAM, ESDRAM), synchronous connection Dynamic random access memory (synch link DRAM, SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DR RAM) and so on. That is to say, the memories in the embodiments of the present application are intended to include but are not limited to these and any other suitable types of memories.
  • Embodiments of the present application also provide a computer-readable storage medium for storing computer programs.
  • the computer-readable storage medium may be applied to the network device in the embodiments of the present application, and the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiments of the present application.
  • the computer program causes the computer to execute the corresponding process implemented by the network device in each method of the embodiments of the present application.
  • the computer-readable storage medium can be applied to the terminal device in the embodiments of the present application, and the computer program enables the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiments of the present application, for simplicity And will not be repeated here.
  • An embodiment of the present application also provides a computer program product, including computer program instructions.
  • the computer program product can be applied to the network device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. Repeat again.
  • the computer program product can be applied to the terminal device in the embodiments of the present application, and the computer program instructions cause the computer to execute the corresponding process implemented by the mobile terminal/terminal device in each method of the embodiment of the present application. I will not repeat them here.
  • An embodiment of the present application also provides a computer program.
  • the computer program can be applied to the network device in the embodiment of the present application.
  • the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the network device in each method of the embodiment of the present application. And will not be repeated here.
  • the computer program can be applied to the terminal device in the embodiments of the present application.
  • the computer program runs on the computer, the computer is allowed to execute the corresponding process implemented by the terminal device in each method of the embodiments of the present application. And will not be repeated here.
  • the disclosed system, device, and method may be implemented in other ways.
  • the device embodiments described above are only schematic.
  • the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical, or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units may be integrated into one unit.
  • the function is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium.
  • the technical solution of the present application essentially or part of the contribution to the existing technology or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including Several instructions are used to enable a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory,) ROM, random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program code .

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
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Abstract

Des modes de réalisation de la présente invention concernent un procédé d'échantillonnage d'un signal d'auto-brouillage, un dispositif terminal et un dispositif de réseau. Le procédé comprend : la réception par le dispositif terminal d'informations de configuration envoyées par le dispositif de réseau, les informations de configuration étant utilisées pour indiquer un intervalle temporel d'échantillonnage d'un signal de liaison montante, aucun signal de liaison descendante n'existant dans l'intervalle temporel d'échantillonnage, le signal de liaison montante étant capable de générer un auto-brouillage sur le signal de liaison descendante, et des espacements de sous-porteuses du signal de liaison montante et du signal de liaison descendante étant différents. Le procédé, le dispositif terminal et le dispositif de réseau dans les modes de réalisation de la présente invention facilitent l'échantillonnage d'un signal d'auto-brouillage propre, de façon à atteindre une annulation d'auto-brouillage parfaite.
PCT/CN2018/124686 2018-12-28 2018-12-28 Procédé d'échantillonnage de signal d'auto-brouillage, dispositif terminal et dispositif de réseau WO2020133159A1 (fr)

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CN201880096764.1A CN112585878B (zh) 2018-12-28 2018-12-28 采样自干扰信号的方法、终端设备和网络设备
PCT/CN2018/124686 WO2020133159A1 (fr) 2018-12-28 2018-12-28 Procédé d'échantillonnage de signal d'auto-brouillage, dispositif terminal et dispositif de réseau

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