WO2021168863A1 - Procédé et appareil de détermination de coefficients de filtre - Google Patents

Procédé et appareil de détermination de coefficients de filtre Download PDF

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Publication number
WO2021168863A1
WO2021168863A1 PCT/CN2020/077356 CN2020077356W WO2021168863A1 WO 2021168863 A1 WO2021168863 A1 WO 2021168863A1 CN 2020077356 W CN2020077356 W CN 2020077356W WO 2021168863 A1 WO2021168863 A1 WO 2021168863A1
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Prior art keywords
coefficients
measurement signal
analog filter
period
coefficient
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PCT/CN2020/077356
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English (en)
Chinese (zh)
Inventor
李帅
鲁振伟
吴毅凌
蒋亚军
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华为技术有限公司
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Priority to CN202080096386.4A priority Critical patent/CN115088207B/zh
Priority to PCT/CN2020/077356 priority patent/WO2021168863A1/fr
Publication of WO2021168863A1 publication Critical patent/WO2021168863A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/15—Performance testing

Definitions

  • the embodiments of the present application provide a method and device for determining filter coefficients to solve the problem of how to set the receiving analog filter of the receiving device and the transmitting analog filter of the transmitting device.
  • the first device may also use the transmit coefficient of the transmit analog filter as the receive coefficient of the receive analog filter of the first device.
  • the first device may also send a second indication to the second device, and the second indication may be used to indicate the at least two first measurements sent by the first device The position of the first time unit in the first period corresponding to the signal, and the position of the second time unit in the first period corresponding to the at least two second measurement signals sent respectively.
  • the first device and the second device may agree on the position of the time unit in the first period when the first device uses the wide beam and the narrow beam to send the measurement signal.
  • the first device may also notify the second device that the first device uses the wide beam and the narrow beam to send the position of the time unit of the measurement signal in the first period.
  • the first device instructs the second device to use the wide beam and the narrow beam to send the measurement signal time unit position in the first period in a manner, so that the first device can flexibly configure the time when the first device sends the measurement signal.
  • any one of the first time units (that is, the transmission time of the first measurement signal) is earlier than any one of the second time units (the time of the second measurement signal).
  • Sending time that is, in the first period, the first device first uses the same wide beam to send the first measurement signal, and then uses a different narrow beam to send the second measurement signal.
  • This way of sending measurement signals can facilitate the second device to quickly select the sending coefficient of the sending analog filter of the first device and the receiving coefficient of the receiving analog filter of the second device, which improves the determination of the matching between the two devices. The efficiency of the transmit coefficient of the transmit analog filter and the receive coefficient of the receive analog filter.
  • the first period there is a second time unit between two adjacent first time units, that is, when the first device sends a measurement signal, it may A second measurement signal can be inserted between the two first measurement signals.
  • the time for each second device to access the first device is not fixed.
  • the first device transmits the measurement signal through the wide beam and the narrow beam. Compared with the first measurement signal using the wide beam and then the second measurement signal using the narrow beam, it avoids that a certain second device misses a certain first measurement signal. A part of the first measurement signal sent using a wide beam during one cycle needs to occupy the next first cycle to complete the problem of determining the coefficient.
  • the second device can start the coefficient determination process in the nearest first time unit, and the second device is completing the first measurement After the signal is measured and the reception coefficient of the local side is determined, the second measurement signal of the opposite side can be measured in the nearest second time unit to determine the transmission coefficient of the opposite side.
  • multiple second devices can quickly select the transmission coefficients of the transmitting analog filter of the first device and the receiving coefficients of the receiving analog filter of the second device, and the transmission coefficient and the receiving coefficient for determining the match between the two devices can be improved. The efficiency of the receiving coefficient.
  • the transmitting analog filter and the receiving analog filter in the first device may be different filters.
  • the transmitting analog filter and the receiving analog filter in the first device may be one filter.
  • a method for determining filter coefficients is provided, a first period is configured in a second device, and the first period is a receiving period during which the second device receives a measurement signal.
  • the second device uses at least two different sets of third coefficients of the receiving analog filter of the second device to receive the first measurement signal from the first device on at least two different first time units, That is, a set of reception coefficients corresponding to each first measurement signal received by the second device is different, and the first time unit corresponding to each first measurement signal is also different.
  • the second device may select a set of third coefficients from the at least two different sets of third coefficients as the receiving coefficients of the receiving analog filter of the second device.
  • the second device uses the reception coefficient of the reception analog filter to respectively receive the second measurement signal from the first device on at least two different second time units. That is, the second device uses the same set of reception coefficients to receive multiple second measurement signals, and the reception time (second time unit) corresponding to each second measurement signal is different.
  • each second measurement signal is associated with an identifier.
  • the second device determines a target identifier, and sends a first instruction to the first device, where the first instruction is used to indicate the target identifier, and the target identifier is included in at least two of the second Among the identifiers respectively associated with the measurement signals, that is, the measurement signal identified by the target identifier is one of the at least two second measurement signals.
  • the second device uses different reception coefficients to receive the first measurement signal sent by the first device in different time units, and selects the reception coefficient of the reception analog filter of the second device from the different coefficients. Then, according to the at least two second measurement signals respectively received in different time units using the reception coefficient, the transmission coefficient of the transmission analog filter of the first device is selected for the first device. In this way, the second device determines the transmit coefficient of the transmit analog filter of the first device and the receive coefficient of the receive analog filter of the second device. Subsequent use of transmission coefficients to send data and use of reception coefficients to receive data can improve communication quality.
  • the second device may also receive a second indication from the first device, where the second indication is used to indicate the at least two first measurements sent by the first device The position of the first time unit corresponding to the signal in the first period, and the position of the second time unit corresponding to the at least two second measurement signals sent by the first device in the first period. Location. Furthermore, the second device may determine the positions of the first time unit and the second time unit in the first period according to the second instruction, so that the first measurement can be received on the first time unit Signal, the second measurement signal is received on the second time unit.
  • the first device and the second device may agree on the position in the first period of the time unit during which the first device uses the wide beam and the narrow beam to send the measurement signal.
  • the first device may also notify the second device that the first device uses the wide beam and the narrow beam to send the position of the time unit of the measurement signal in the first cycle.
  • the first device instructs the second device to use the wide beam and the narrow beam to send the measurement signal time unit position in the first cycle, so that the first device can flexibly configure the time when the first device sends the measurement signal.
  • any one of the first time units (that is, the transmission time of the first measurement signal) is earlier than any one of the second time units (the time of the second measurement signal).
  • Sending time that is, in the first period, the first device first uses the same wide beam to send the first measurement signal, and then uses a different narrow beam to send the second measurement signal.
  • This way of sending measurement signals can facilitate the second device to quickly select the sending coefficient of the sending analog filter of the first device and the receiving coefficient of the receiving analog filter of the second device, which improves the determination of the matching between the two devices. The efficiency of the transmit coefficient of the transmit analog filter and the receive coefficient of the receive analog filter.
  • the first period there is a second time unit between two adjacent first time units, that is, when the first device sends a measurement signal, it may A second measurement signal can be inserted between the two first measurement signals.
  • the time for each second device to access the first device is not fixed.
  • the first device transmits the measurement signal through the wide beam and the narrow beam. Compared with the first measurement signal using the wide beam and then the second measurement signal using the narrow beam, it avoids that a certain second device misses a certain first measurement signal. A part of the first measurement signal sent using a wide beam during one cycle needs to occupy the next first cycle to complete the problem of determining the coefficient.
  • the second device can start the coefficient determination process in the nearest first time unit, and the second device is completing the first measurement After the signal is measured and the reception coefficient of the local side is determined, the second measurement signal of the opposite side can be measured in the nearest second time unit to determine the transmission coefficient of the opposite side.
  • multiple second devices can quickly select the transmission coefficients of the transmitting analog filter of the first device and the receiving coefficients of the receiving analog filter of the second device, and the transmission coefficient and the receiving coefficient for determining the match between the two devices can be improved. The efficiency of the receiving coefficient.
  • the second device when the second device receives the first measurement signal, it may be that the second device uses the at least two different sets of the first measurement signal of the receiving analog filter of the second device. Three coefficients, in the at least two different first time units, respectively receiving a set of first coefficients from the first device using the transmitting analog filter of the first device in the at least two different first time units The first measurement signal sent on respectively.
  • the second device uses different reception coefficients to receive the measurement signal sent by the first device with the same transmission coefficient. In this way, the local reception coefficient changes and the peer transmission coefficient remains unchanged in a many-to-one manner.
  • the second device is in the second
  • the reception coefficient of the second device used for communication is selected from the different reception coefficients of the device, which can better avoid communication interference.
  • the second device selects the reception coefficient for communication according to the signal quality of the measured signal, which can better avoid communication interference.
  • the second device when the second device selects the transmission coefficient of the transmission analog filter of the second device, it may be a group of first measurement signals that the second device associates with the first measurement signal with the strongest signal strength. The three coefficients are determined as the sending coefficients of the sending analog filter of the second device.
  • the second device selects the third coefficient corresponding to the measurement signal with the strongest signal strength as the reception coefficient for communication, which can better avoid communication interference and improve communication quality.
  • the second device uses the same reception coefficient, and receives the measurement signal sent by the first device with different transmission coefficients. In this way, a one-to-many approach is adopted in which the reception coefficient of the local end remains unchanged and the transmission coefficient of the opposite end changes.
  • the transmission coefficient of the first device used for communication is selected from the different reception coefficients of a device, which can better avoid communication interference.
  • the second device when determining the target identifier, may determine the target identifier of the measurement signal according to the received signal quality of the at least two second measurement signals.
  • the signal sent by the first device propagates through the spatial multipath to the second device side, and the signal with the strongest signal strength reaches the path corresponding to the signal with the smallest signal fading. Based on the reciprocity of the channel, the second device selects this path for transmission, and the signal sent by the second device reaches the first device and experiences the least fading. Based on this principle, when the first device sends multiple measurement signals through a wide beam, the second device uses different beams to receive the measurement signals respectively, and determines the downlink receive beam of the second device based on the signal optimization criterion, that is, the reception of the second device coefficient.
  • the second device may also determine the uplink transmission beam of the second device based on the optimal signal strength criterion, that is, the transmission coefficient of the second device, so as to achieve the objective of anti-interference in downlink reception and minimum attenuation of the uplink transmission signal.
  • the second device before determining the receiving coefficient of the second device, may also use at least one of the at least two different sets of third coefficients of the receiving analog filter.
  • the second time unit respectively receives the second measurement signal from the first device.
  • the transmitting analog filter and the receiving analog filter in the first device may be different filters.
  • the transmitting analog filter and the receiving analog filter in the first device may be one filter.
  • a communication device in a third aspect, is provided, and the communication has the function of realizing the foregoing first aspect and any possible implementation of the first aspect.
  • These functions can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more functional modules corresponding to the above-mentioned functions.
  • a communication device in a fourth aspect, is provided, and the communication has the function of realizing the foregoing second aspect and any possible implementation of the second aspect.
  • These functions can be realized by hardware, or by hardware executing corresponding software.
  • the hardware or software includes one or more functional modules corresponding to the above-mentioned functions.
  • a communication device may be the first device in the foregoing method embodiment, or a chip set in the first device.
  • the device includes a transceiver, a processor, and optionally, a memory.
  • the memory is used to store computer programs or instructions
  • the processor is respectively coupled with the memory and the transceiver.
  • the processor executes the computer programs or instructions
  • the device executes the first aspect and the first aspect through the transceiver. A method executed by the first device in any possible implementation.
  • a communication device may be the second device in the foregoing method embodiment, or a chip set in the second device.
  • the device includes a transceiver, a processor, and optionally, a memory.
  • the memory is used to store computer programs or instructions
  • the processor is respectively coupled with the memory and the transceiver.
  • the processor executes the computer programs or instructions
  • the device executes the second aspect and the second aspect through the transceiver. The method executed by the second device in any possible implementation.
  • a computer program product comprising: computer program code, when the computer program code runs on a computer, the computer executes the first aspect and any one of the possible aspects of the first aspect. Implementation of the method executed by the first device.
  • a computer-readable storage medium stores a computer program.
  • the computer program When the computer program is executed, the first aspect and any possible implementation of the first aspect are determined by the first aspect.
  • a method executed by a device is executed.
  • Network equipment a device capable of providing random access for terminal equipment or a chip that can be installed in the device, including but not limited to: evolved Node B (eNB), radio network controller ( radio network controller (RNC), node B (Node B, NB), base station controller (BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node) B, HNB), baseband unit (BBU), access point (AP), wireless relay node, wireless backhaul node, transmission point (transmission) in wireless fidelity (WIFI) system and reception point, TRP or transmission point, TP, etc., can also be 5G, such as NR, gNB in the system, or transmission point (TRP or TP), one or a group (including multiple base stations) in the 5G system.
  • the antenna panel may also be a network node constituting a gNB or transmission point, such as a baseband unit (BBU), or a distributed unit (DU
  • Terminal equipment also known as user equipment (UE), mobile station (MS), mobile terminal (MT), terminal, etc.
  • UE user equipment
  • MS mobile station
  • MT mobile terminal
  • terminal devices include handheld devices with wireless connection functions, vehicle-mounted devices, and so on.
  • terminal devices can be: mobile phones (mobile phones), tablets, notebook computers, handheld computers, mobile Internet devices (MID), wearable devices, virtual reality (VR) devices, augmented reality ( Augmented reality (AR) equipment, wireless terminals in industrial control, wireless terminals in self-driving, wireless terminals in remote medical surgery, and smart grids
  • the width of the beam can be defined as the beam width of XdB.
  • the beam width is defined as a beam width of 1 dB, a beam width of 3 dB, and so on.
  • the XdB beamwidth includes a horizontal XdB beamwidth or a vertical XdB beamwidth.
  • the wide beam and the narrow beam are related to the 3dB beam width of the beam.
  • the 3dB beam width of the wide beam is relatively wide, such as 45 to 120 degrees.
  • the function of the wide beam is to provide wide coverage of the broadcast signal.
  • the 3dB beam width of a narrow beam is narrow, such as 10 to 20 degrees.
  • the narrow beam Compared with the wide beam, the narrow beam has higher beam gain and better side-lobe interference suppression capability, but the coverage width is narrower, and it is generally used for point-to-point communication.
  • Narrow beams generally need to be determined through beam scanning and beam selection processes.
  • Figure 1a it is a schematic diagram of a 3dB beam width, with the maximum beam gain as the beam center direction, the maximum beam gain -3dB position as the boundary, and the angular width in the middle of the two sides of the boundary is 3dB beam width.
  • the angular range between the two boundaries is called the beam bandwidth range.
  • the signal quality can be expressed as the signal-to-interference-to-noise ratio, which means the ratio of useful signal to interference + noise floor.
  • the unit of signal quality is usually dB. In LTE, it can be further divided into reference signal-signal to interference plus noise ratio (RS SINR) and physical downlink shared channel (PDSCH) SINR.
  • RS SINR reference signal-signal to interference plus noise ratio
  • PDSCH physical downlink shared channel
  • RSRP Signal strength: no noise and interference are included.
  • RSRP is usually used in the LTE system.
  • RSRP refers to the average value of the signal power received on all REs carrying reference signals in a certain OFDM symbol; it is used to identify the downlink pilot strength of the cell (the power of a single pilot subcarrier), Does not contain noise and interference.
  • RSRP measurement provides a measurement of the signal strength of a cell. It mainly distinguishes the priority of LTE candidate cells based on the signal strength of the cell, and is used as input for cell reselection and cell handover decisions.
  • Measurement signal One measurement signal occupies multiple orthogonal frequency division multiplexing (OFDM) symbols.
  • Measurement signals such as synchronization signal block SSB (SS/PBCH block), or primary synchronization signal (PSS) in SSB, or channel state information reference signal (CSI-RS), or secondary synchronization Signal or second synchronization signal (secondary synchronization signal, SSS).
  • the synchronization signal block SSB (SS/PBCH block) is composed of a primary synchronization signal (PSS), a secondary synchronization signal (SSS), and a physical broadcast channel (PBCH), as shown in Figure 1b.
  • PSS primary synchronization signal
  • SSS secondary synchronization signal
  • PBCH physical broadcast channel
  • SSB is sent in periodic form, and the period of SSB can be 20ms.
  • the SSB of multiple beam directions in one period can be limited to 5 ms (the transmission window of the SSB), and the SSB of multiple beam directions can be referred to as SSB Set in FIG. 1c.
  • SSB Set in FIG. 1c.
  • a 15kHz subcarrier spacing SCS is used, so the number of symbols within 1ms is 14.
  • Each SSB occupies 4 consecutive OFDM symbols, including two SSBs within 1ms, and there is a certain symbol interval between adjacent SSBs.
  • Time unit for example, one or more continuous radio frames, one or more continuous half-frames, one or more continuous subframes, one or more continuous radio frames Slot, one or more consecutive symbols, etc.
  • the wireless frame length is 10ms
  • the half-frame length is 5ms
  • the subframe length is 1ms
  • the slot length is 0.5ms
  • a slot includes 14 symbols.
  • the first period such as one or more continuous radio frames, one or more continuous half-frames, one or more continuous subframes, one or more continuous radio frames
  • the first period is a pre-configured period for transmitting the measurement signal in the measurement signal transmitting device.
  • the first period is a pre-configured period for receiving the measurement signal in the receiving device of the measurement signal.
  • the period may be 20 ms, for example.
  • the sending device may send the measurement signal in multiple consecutive 20ms, for example, if the 80ms includes 4 20ms, then the 80ms includes 4 first periods.
  • 80 ms includes three first periods with a duration of 20 ms, and there is an interval of 10 ms between any two adjacent first periods.
  • the first cycle includes at least four time units.
  • a set of coefficients of the analog filter corresponds to a beam.
  • the analog filter has a set of phase shifters.
  • the phase shifter corresponds to a coefficient
  • the group phase shifter corresponds to a group of coefficients.
  • Figure 2a includes three phase shifters, then a set of coefficients can include three coefficients, which are coefficient 1, coefficient 2, and coefficient 3.
  • the input signal of each phase shifter is the same, and the signal generated by the superposition of a group of phases has different signal gains in different directions, thereby forming a beam in space.
  • the antenna board has a phase shifter device.
  • the control unit can generate multiple sets of different coefficients of the analog filter by configuring the phase of each phase shifter, so that when the signal passes through the phase shifter and is sent out from the antenna element, The signal is superimposed on the phase shift corresponding to the phase of the phase shifter to form the effect of beamforming.
  • a set of coefficients may include three coefficients, which are coefficient 1, coefficient 2, and coefficient 3.
  • the multiple sets of different coefficients generated by the control unit come from the analog beam control unit.
  • the analog beam control unit can first select multiple sets of analog filter coefficients and inform the control unit.
  • the analog beam control unit can be deployed on the baseband or An independent unit.
  • the "and/or” in this application describes the association relationship of the associated objects, indicating that there can be three relationships, for example, A and/or B, which can mean: A alone exists, A and B exist at the same time, and B exists alone. This situation.
  • the character “/” generally indicates that the associated objects before and after are in an "or” relationship.
  • the multiple involved in this application refers to two or more.
  • words such as “first” and “second” are only used for the purpose of distinguishing description, and cannot be understood as indicating or implying relative importance, nor can it be understood as indicating Or imply the order.
  • LTE long term evolution
  • WiMAX worldwide interoperability for microwave access
  • 5th generation fifth generation
  • 5G new radio access technology
  • NR new radio access technology
  • the beam selection process is divided into three processes, namely p1, p2, and p3. Through these three processes, the beam used for downlink data transmission between the terminal device and the network device can be determined.
  • the terminal device selects a set of target first coefficients for the network device (for sending a wide beam), for example, a set of first coefficients corresponding to the first measurement signal with the best signal quality may be used as the target first coefficient.
  • the terminal device may inform the network device of a set of target first coefficients selected for the network device in a physical random access channel (PRACH).
  • PRACH physical random access channel
  • the network device may use the set of target first coefficients (sending wide beams) selected by the terminal device in the p1 process to send configuration information to the terminal device.
  • the configuration information includes at least two second measurement signals respectively corresponding to The network device side sends a set of second coefficients of the analog filter (sends a narrow beam).
  • the network device selects multiple narrow beams corresponding to multiple sets of second coefficients in the p2 process according to the wide beam selected by the terminal device for the network device in the p1 process. For example, the beam bandwidth range of these narrow beams is within the beam bandwidth range of the wide beam.
  • the network device may use a set of the target second coefficients selected by the terminal device in the p2 process (sending a narrow beam) to send at least two third measurement signals to the terminal device.
  • the terminal device uses at least two different sets of fourth coefficients (receiving narrow beams) of the receiving analog filter on the terminal device side to receive the third measurement signal respectively.
  • the width of the beam corresponding to any set of third coefficients of the receiving analog filter on the terminal device side is greater than the width of the beam corresponding to any set of fourth coefficients.
  • the terminal device may select a set of target fourth coefficients from at least two different sets of fourth coefficients (receiving narrow beams) as the receiving coefficients of the receiving analog filter of the terminal device (receiving narrow beams).
  • the first measurement signal, the second measurement signal, and the third measurement signal in the above example of FIG. 4 are signals of the same type.
  • the first measurement signal, the second measurement signal, and the third measurement signal may all be PSS, or both SSB, the first, second, and third are to distinguish the measurement signals sent in the three different processes of p1, p2, and p3.
  • the first device 11 is located relatively high and is less interfered by the surrounding environment
  • the second device 12 is located relatively low and is easily affected by the interference of the surrounding environment.
  • the signal of the same frequency or adjacent frequency sent by the network equipment or terminal equipment near the second equipment 12 interferes with the signal received by the second equipment 12. Since the location of nearby interfering devices is generally fixed, a typical feature of interfering signals is that they have a certain directionality.
  • the second device uses multiple sets of different coefficients to receive the first measurement signal instead of using a set of third coefficients (receiving a wide beam) in the example of FIG. 4 to receive the first measurement signal, the reception of interference signals to the second device can be reduced.
  • the impact of the coefficient selection process when the beam corresponding to any set of coefficients used to receive the first measurement signal is a narrow beam, it is less likely that the interference signal is within the beam bandwidth of the narrow beam, and the second device receives the measurement signal by using the narrow beam , The selected reception coefficient of the second device can effectively suppress interference signals.
  • a beam selection method is provided, which can also be understood as a method for determining filter coefficients.
  • the first device can send measurement signals using a wide beam and a narrow beam in any period. Any cycle can be called the first cycle.
  • the specific process in the first cycle is as follows:
  • Step 501 The first device uses a set of first coefficients of the sending analog filter to send first measurement signals to the second device on at least two different first time units.
  • the second device adopts at least two different sets of third coefficients of the receiving analog filter, and receives the first measurement signal from the first device on the at least two different first time units.
  • the second device uses at least two different sets of third coefficients of the receiving analog filter, and on the at least two first time units, respectively receives the transmitting analog filter from the first device using the first device.
  • the first measurement signal of a set of first coefficients is respectively sent on the at least two different first time units.
  • the first device sends at least two first measurement signals, and the first measurement signals may be, for example, SSB, or PSS, or CSI-RS, or SSS. Each first measurement signal corresponds to a different first time unit, and each first measurement signal corresponds to a set of first coefficients.
  • the second device receives the first measurement signal at the first time unit when the first device sends the first measurement signal.
  • the third coefficient corresponding to each first measurement signal received by the second device is different.
  • the first cycle includes 10 radio frames (10ms), one radio frame includes two half frames (5ms), the first time unit is one half frame, and the first device can be in each half frame of the first 5 radio frames If the PSS is sent as the first measurement signal in the middle, the first device sends 10 first measurement signals, and the same set of first coefficients (sending wide beam) are used to send the first measurement signals in different half frames.
  • the second device uses a set of third coefficients of the receiving analog filter of the second device to receive PSS in each half frame of the first 5 radio frames of the first cycle, and the second device can receive 10 first For the measurement signal, a set of third coefficients of the first measurement signal received in different fields are different.
  • the second device uses the first set of third coefficients (corresponding to receiving beam 1) to receive the first measurement signal in the first half frame of the first period, and uses the second set of coefficients in the second half frame of the first period.
  • the third coefficient (corresponding to receiving beam 2) receives the first measurement signal
  • the tenth set of third coefficients (corresponding to receiving beam 10) is used to receive the first measurement signal in the tenth half frame of the first cycle.
  • the 10 sets of third coefficients are different, and the corresponding receiving beam directions are also different.
  • the first cycle includes 8 radio frames (10ms), one radio frame includes two half frames (5ms), the first time unit is one half frame, and the first device can perform the first half of each radio frame If the PSS is sent as the first measurement signal in the frame, the first device sends 8 first measurement signals, and the same set of first coefficients are used to send the first measurement signals in different half-frames.
  • the second device uses a set of third coefficients of the receiving analog filter of the second device to receive the PSS in the first half frame of each radio frame in the first period, that is, the second device receives the PSS in the first period. The PSS is received in the odd half frame.
  • the second device can receive eight first measurement signals, and a set of third coefficients of the first measurement signal received in different half frames are different.
  • the second device uses the first set of third coefficients (corresponding to receiving beam 1) to receive the first measurement signal in the first half of the first radio frame, and in the first half of the second radio frame Use the second set of third coefficients (corresponding to receiving beam 2) to receive the first measurement signal,..., use the eighth set of third coefficients (corresponding to receiving beam 8) to receive the first measurement signal in the first half of the eighth radio frame
  • the eight sets of third coefficients are different, and the corresponding receiving beam directions are also different.
  • the second device uses different reception coefficients to receive the measurement signal sent by the first device with the same transmission coefficient. In this way, using a many-to-one approach in which the reception coefficient of the local end changes and the transmission coefficient of the opposite end does not change, the second device The reception coefficient used for communication of the second device is selected from the different reception coefficients of the second device, which can better avoid communication interference.
  • the first device sends at least two second measurement signals.
  • the second measurement signal may be, for example, SSB, or PSS, or CSI-RS.
  • the first measurement signal and the second measurement signal are generally the same type of signal, for example, the first measurement signal.
  • Both the second measurement signal and the second measurement signal are SSB, or both are PSS, or both are CSI-RS.
  • the second time unit corresponding to each second measurement signal is different, and the set of second coefficients corresponding to each second measurement signal is different.
  • the second device receives at least two second measurement signals, each second measurement signal corresponds to a different second time unit, and each second measurement signal corresponds to the same set of reception coefficients.
  • the second set of coefficients (corresponding to the narrow transmit beam 2) sends the second measurement signal,..., the tenth set of second coefficients (corresponds to the narrow transmit beam 10) is used to send the second measurement signal in the 20th half frame of the first cycle .
  • the 10 sets of second coefficients are different, and the corresponding narrow beam directions are also different.
  • the second device uses a set of reception coefficients of the receiving analog filter to receive the PSS in each half of the last 5 radio frames of the first period, and the second device can receive 10 second measurement signals with different half frames. The same set of reception coefficients is used in the frame to receive the second measurement signal.
  • the second device uses a set of reception coefficients of the receiving analog filter of the second device to receive the PSS in the second half frame of each radio frame in the first period, that is, the second device receives the PSS in the first period of the first period. PSS is received in an even number of half frames.
  • the second device can receive 8 second measurement signals, and the same set of reception coefficients are used to receive the second measurement signals in different half frames.
  • the first device When the first device sends the first measurement signal on the first time unit and the second measurement signal on the second time unit, at least two of the at least two different first time units are earlier than the at least At least one of the two different second time units; and at least two of the at least two different second time units are later than at least one of the at least two different first time units. That is, it is necessary to ensure that among the measurement signals sent by the first device in the first period, there must be a situation where a wide beam is used to send at least two first measurement signals, and then a narrow beam is used to send at least two second measurement signals. This is so that the second device first receives the measurement signal sent by the first device using the wide beam according to the different receiving beams of the second device, so as to determine the receiving beam of the second device. Then, the second device receives the measurement signals sent by the first device using different narrow beams according to the selected receiving beam, so as to determine the narrow beam of the first device for the first device.
  • the transmission time of any first measurement signal is earlier than the transmission time of any second measurement signal, that is, any first time unit is earlier than any second time unit , Any second time unit is later than any first time unit.
  • the time length of the first cycle is (m+n)T, m is an integer greater than or equal to 2, and n is an integer greater than or equal to 2.
  • the first device uses a wide beam to send n first measurement signals, the time unit of each first measurement signal is T, and the second device uses a different beam to receive the first measurement signal sent by the first device, and selects The receiving beam of the second device is the receiving coefficient of the receiving analog filter. Then, the first device uses m different narrow beams to respectively send second measurement signals, and the time unit of each second measurement signal is T.
  • the time for each second device to access the first device is not fixed.
  • the first device transmits the measurement signal through the wide beam and the narrow beam. Compared with the first measurement signal using the wide beam and then the second measurement signal using the narrow beam, it avoids that a certain second device misses a certain first measurement signal. A part of the first measurement signal sent using a wide beam during one cycle needs to occupy the next first cycle to complete the problem of determining the coefficient. In this case, since the first time unit and the second time unit overlap in the time domain, the second device can start the coefficient determination process in the nearest first time unit, and the second device is completing the first time unit.
  • the second device may also use at least one of the at least two different sets of third coefficients of the reception analog filter.
  • the three coefficients respectively receive the second measurement signal sent by the first device on at least one second time unit.
  • the second device may also use at least one set of third coefficients out of the at least two different sets of third coefficients of the receiving analog filter, and receive at least one second time unit from the first device using the first set of third coefficients.
  • a device sends at least one set of different second coefficients of an analog filter, and sends a second measurement signal on at least one second time unit.
  • the second device in the second time unit, can multiplex a set of third coefficients of the first measurement signal received in the first time unit, and receive the second measurement signal.
  • the second device in the fourth time unit, may multiplex a set of third coefficients of the first measurement signal received in the third time unit, and receive the second measurement signal.
  • the second device may multiplex a set of third coefficients of the first measurement signal received in the first time unit, and receive the second measurement signal.
  • the index may also be carried in the measurement signal.
  • the second device may inform the first device of the index of the selected target second measurement signal in the first indication.
  • the second device selects a set of transmission coefficients for the first device to be used by the first device to send data, that is, selects a suitable second measurement signal, and informs the first device of its associated identification, then the first device can determine according to the identification A corresponding set of sending coefficients.
  • the second device may determine the target identifier of the measurement signal according to the signal quality of the received at least two second measurement signals. It may also be based on the received at least two second measurement signal strengths to determine the target identifier of the measurement signal.
  • the second device adopts the same reception coefficient, and receives the measurement signal sent by the first device with different transmission coefficients. In this way, the one-to-many method with the local reception coefficient unchanged and the peer transmission coefficient changing is adopted, and the second device Selecting the transmission coefficient of the first device for communication from the different reception coefficients of the first device can better avoid communication interference.
  • Step 505 The first device determines the transmission coefficient of the transmission analog filter of the first device based on the target identifier. Specifically, the first device determines the second measurement signal associated with the target identifier, and determines a set of second coefficients associated with the associated second measurement signal, and uses the associated set of second coefficients as the associated set of second coefficients. The transmitting coefficient of the transmitting analog filter of the first device. Subsequently, the first device may use a set of the transmission coefficients to send information/data to the second device.
  • the first device and the second device may agree on the positions of the time units corresponding to the first measurement signal and the second measurement signal sent by the first device in the first period.
  • the first device may also notify the second device, and the first device sends the position of the time unit corresponding to the first measurement signal and the second measurement signal in the first period.
  • the positions of the time units for sending the first measurement signal and the second measurement signal in the first period may be different or different.
  • First Period Frame Number which is the number of system frames included in the first period
  • the arrangement of time units in the first period First Period Time Slot Pattern or First Period Time Slot Bitmap, etc.
  • the i-th bit of First Period Time Slot Bitmap corresponds to the time unit type of the i-th field in the first period. If i is 0, the field is the first time unit. If i is 1, the field is the second time unit.
  • the first device may also send the second indication to the second device through a radio resource control (Radio Resource Control, RRC) message, for example, a new cell (First Period) is added to the RRC message to carry the second indication.
  • RRC Radio Resource Control
  • a set of coefficients (beams) for transmitting configuration information may be agreed between the first device and the second device, and the first device uses the agreed set of coefficients (beams) in the first device to send the first device to the second device.
  • the second device uses an agreed set of coefficients (beams) in the second device to receive the second instruction.
  • FIG. 7c there is provided a schematic diagram of the time unit for the first device to notify the second device of the measurement signal when the measurement signal is PSS.
  • PSS is sent once in a half-frame, that is, a time unit T is a half-frame.
  • the period includes (m+n)*T, and the half-frame numbers are 0 to (m+n). )*T.
  • the first device may instruct the second device to send the number of the half frame corresponding to the first measurement signal and the second measurement signal respectively.
  • the first device may be instructed to send the first measurement signal And the rule of sending the second measurement signal.
  • the first time unit of any first measurement signal is earlier than the second time unit of the second measurement signal, or as shown in FIG.
  • the value When the value is 1, it means that the first time unit of any first measurement signal is earlier than the second time unit of the second measurement signal. When the value is 0, it means the first time unit of the second measurement signal. There is a second measurement signal between any two adjacent first measurement signals sent by a device.
  • the protocol stipulates that the at least two first measurement signals sent by the first device correspond to first time units, and the at least two second measurement signals sent by the first device respectively correspond to second time units, and the first device is not required. Send to the second device.
  • the first device may send the first measurement signal and the second measurement signal in multiple cycles, and the multiple cycles may have the same or different time lengths as the first cycle.
  • the first device is configured with three cycles for sending measurement signals, the time length of the first cycle is 20 ms, the time length of the second cycle is 40 ms, and the time length of the third cycle is 50 ms.
  • the transmitting analog filter and the receiving analog filter in the first device may be different filters.
  • the transmitting analog filter and the receiving analog filter in the first device may be one filter.
  • the transmitting analog filter and the receiving analog filter in the second device may be the same filter or different filters.
  • the device When the number of phase shifters of the transmitting analog filter is different from the number of receiving analog filters, and the number of coefficients included in a set of receiving coefficients is different from the number of coefficients not included in a set of transmitting coefficients, the device’s A set of reception coefficients cannot be multiplexed with a set of transmission coefficients.
  • the first device may be a first network device, such as a base station; the second device may be a second network device, or a terminal device, and the second network device may be, for example, a relay device.
  • the scene is defined as scene 1.
  • the scenario where the first device and the second device are switched in order that is, it is applicable to the scenario where the first device is a second network device (such as a relay device) or a terminal device, and the second device is a first network device, such as a base station, which is defined as Scene 2.
  • scenario 1 The difference between scenario 1 and scenario 2 is:
  • the second device does not need to be connected to the first device, and the second device can perform the process of determining the transmission coefficient of the second device and the reception coefficient of the first device, as well as other processes in the foregoing embodiment.
  • the first device needs to be connected to the second device before the second device can perform the process of determining the transmission coefficient of the second device and the reception coefficient of the first device, as well as other processes in the foregoing embodiment.
  • the foregoing describes the method for determining filter coefficients in the embodiments of the present application, and the communication device for beam selection in the embodiments of the present application will be introduced in the following.
  • the method and the device are based on the same technical idea. Since the principles of the method and the device to solve the problem are similar, the implementation of the device and the method can be referred to each other, and the repetition will not be repeated.
  • a communication device 800 is provided.
  • the device 800 can perform the above-mentioned methods in FIG. 4, FIG. 5, FIG. 7a, and FIG. 7b. In order to avoid redundancy, the steps performed by the device will not be detailed here.
  • the apparatus 800 may be a first device or a chip applied in the first device.
  • the device 800 may include: a transceiver module 820, a processing module 810, and optionally, a storage module 830; the processing module 810 may be connected to the storage module 830 and the transceiver module 820 respectively, and the storage module 830 may also be connected to the transceiver module 820 .
  • the transceiver module 820 can be used to send the first coefficients of the analog filter to the second device in at least two different first time units in the first period.
  • the transceiver module 820 is further configured to send a second indication to the second device, and the second indication is used to indicate that the at least two first measurement signals sent by the apparatus are respectively The corresponding position of the first time unit in the first period, and the position of the second time unit in the first period corresponding to the at least two second measurement signals sent.
  • the storage module 830 may be used to store the first period, the first time unit, the second time unit, the sending coefficient of the sending analog filter, and the receiving coefficient of the receiving analog filter.
  • the communication device can be used in communication equipment, circuits, hardware components, or chips.
  • the aforementioned processing module 810, storage module 830, and transceiver module 820 may be connected through a communication bus.
  • the processing module 810 in FIG. 8 may be implemented by the processor 1010, the transceiver module 820 may be implemented by the transceiver 1020, and the storage module 830 may be implemented by the memory 1030.
  • the processor 1110 when used to determine the target identifier of the measurement signal, it is specifically configured to: determine the target of the measurement signal according to the signal quality corresponding to the at least two second measurement signals. logo.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention se rapporte au domaine des communications sans fil. L'invention concerne un procédé et un appareil de détermination de coefficients de filtre, destinés à résoudre le problème de la façon de configurer un coefficient d'émission d'un filtre analogique d'émission et un coefficient de réception d'un filtre de réception entre deux dispositifs. Un premier dispositif envoie des premiers signaux de mesure dans des unités de temps différentes en utilisant le même coefficient d'un filtre analogique d'émission. Un deuxième dispositif reçoit respectivement les premiers signaux de mesure en utilisant une pluralité de coefficients différents d'un filtre analogique de réception. Le deuxième dispositif sélectionne un coefficient parmi la pluralité de coefficients différents en tant que coefficient de réception du deuxième dispositif. Le premier dispositif envoie respectivement des deuxièmes signaux de mesure dans des unités de temps différentes en utilisant des coefficients différents du filtre analogique d'émission. Le deuxième dispositif reçoit les deuxièmes signaux de mesure en utilisant le coefficient de réception. Le premier dispositif reçoit une première indication en provenance du deuxième dispositif, et détermine, d'après la première indication, un coefficient du filtre analogique d'émission du premier dispositif. La qualité des communications est améliorée en utilisant le procédé.
PCT/CN2020/077356 2020-02-29 2020-02-29 Procédé et appareil de détermination de coefficients de filtre WO2021168863A1 (fr)

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PCT/CN2020/077356 WO2021168863A1 (fr) 2020-02-29 2020-02-29 Procédé et appareil de détermination de coefficients de filtre

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JP6567216B2 (ja) * 2017-03-16 2019-08-28 三菱電機株式会社 信号処理装置
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US20180035407A1 (en) * 2011-12-06 2018-02-01 Advanced Rf Technologies, Inc. Method for setting a filter coefficient for a communication system
US20160329973A1 (en) * 2014-01-31 2016-11-10 Rohde & Schwarz Gmbh & Co. Kg A measuring system and a measuring method with broadband synchronisation and narrow-band signal analysis
CN108324319A (zh) * 2017-01-19 2018-07-27 百胜集团 用于无失真多波束超声接收波束形成的系统和方法

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