WO2019137172A1 - 确定波束、信号质量测量方法及通信装置 - Google Patents

确定波束、信号质量测量方法及通信装置 Download PDF

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Publication number
WO2019137172A1
WO2019137172A1 PCT/CN2018/122074 CN2018122074W WO2019137172A1 WO 2019137172 A1 WO2019137172 A1 WO 2019137172A1 CN 2018122074 W CN2018122074 W CN 2018122074W WO 2019137172 A1 WO2019137172 A1 WO 2019137172A1
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WIPO (PCT)
Prior art keywords
signal
power offset
downlink
threshold
quality
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PCT/CN2018/122074
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English (en)
French (fr)
Inventor
管鹏
张希
秦熠
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华为技术有限公司
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Publication of WO2019137172A1 publication Critical patent/WO2019137172A1/zh

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/24—Cell structures
    • H04W16/28—Cell structures using beam steering
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/52—Allocation or scheduling criteria for wireless resources based on load
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H04W72/542—Allocation or scheduling criteria for wireless resources based on quality criteria using measured or perceived quality

Definitions

  • the present application relates to the field of communications technologies, and in particular, to a beam determining method, a signal quality measuring method, and a communications device.
  • the terminal device needs to find a new beam. For example, if the beam of the physical downlink control channel (PDCCH) fails, it is necessary to find a new beam to communicate with the network device. Before finding a new beam, one or more candidate beams are first determined, and one or more of the candidate beams are selected as new beams. At present, it is urgent to provide a scheme for determining a beam.
  • PDCCH physical downlink control channel
  • the present application provides a method and a communication device for determining a beam to achieve accurate beam selection.
  • An aspect of the present application provides a method for determining a beam, including: receiving a reference threshold sent by a network device and one or more downlink signals; and performing measurement on the received one or more downlink signals to obtain the One or more signal qualities corresponding to the one or more downlink signals; and one or more power offset values PC_SS corresponding to the one or more signal qualities, the reference threshold, and the one or more downlink signals
  • a candidate beam is determined by one or more difference values of the power offset value PC_SS corresponding to the reference reference signal; wherein a quality threshold corresponding to the reference reference signal is the reference threshold, and the power offset value PC_SS refers to a non-zero
  • the ratio of the transmission power of the power channel state information reference signal NZP CSI-RS to the transmission power of the synchronization signal/physical broadcast channel block SS/PBCH may be divided by the transmission power of the non-zero power channel state information reference signal NZP CSI-RS The transmission power of the synchronization signal/physical broadcast channel block SS/PBCH,
  • the ratio reflects the power deviation of the two transmitted signals, and is equivalent to the difference in the decibel dB quantization mode.
  • the power described above is the power of the non-zero power channel state information reference signal NZP CSI-RS or the synchronization signal/physical broadcast channel block SS/PBCH on each resource unit RE.
  • the terminal device considers the transmission power of the downlink signal when selecting the beam according to the threshold of the signal quality, thereby enabling the network device to accurately determine the candidate beam.
  • the one or more power offset values PC_SS corresponding to the one or more signal qualities, the reference threshold, and the one or more downlink signals correspond to a reference reference signal
  • One or more differences of the power offset value PC_SS, determining the candidate beam specifically including:
  • the quality threshold corresponding to each downlink signal is determined according to the reference threshold and the transmission power of each downlink signal, and each downlink signal is compared with a quality threshold to determine a candidate beam.
  • the one or more ones of the power offset values of the one or more power offset values and the reference reference signal according to the reference threshold and the one or more downlink signals And determining, by the difference, the one or more quality thresholds, including: determining, by the quality threshold, a power offset value of the reference threshold corresponding to the one or more downlink signals and a corresponding power offset value of the reference reference signal. The sum of the differences.
  • the one or more power offset values PC_SS and the reference reference signal according to the one or more signal qualities, the reference threshold, and the one or more downlink signals Determining the candidate beam by one or more difference values of the corresponding power offset value PC_SS, specifically including:
  • the updated one or more beams corresponding to the downlink signal whose signal quality is greater than the reference threshold are used as candidate beams.
  • the transmission power of each downlink signal is transmitted, the signal quality of each downlink signal is adjusted, and the adjusted signal quality of each downlink signal is compared with a reference threshold to determine a candidate beam.
  • the determining the updated signal quality according to the signal quality and the difference between the PC_SS corresponding to the one or more downlink signals and the corresponding PC_SS of the reference reference signal including: determining an update
  • the signal quality is the sum of the signal quality of the one or more downlink signals and the difference between the PC_SS corresponding to the one or more downlink signals and the corresponding PC_SS of the reference reference signal.
  • the reference reference signal is a predefined reference reference signal or a reference signal having a quasi-homogonal relationship with the downlink control channel.
  • the method further includes: receiving, by the network device, information for indicating a reference reference signal, and indicating PC_SS information corresponding to the reference reference signal and one or more downlink signals.
  • the reference reference signal and PC_SS are configured by the network device.
  • the PC_SS information corresponding to the reference reference signal and the one or more downlink signals includes: PC_SS information used to indicate a downlink signal set, or used to indicate a downlink signal concentration.
  • a PC_SS information corresponding to the downlink signal wherein the PC_SS information corresponding to the downlink signal in the downlink signal set is PC_SS information corresponding to the reference downlink signal, and the downlink signal set includes one or more downlink signals.
  • the following row signal set indicates PC_SS information in units, which can save signaling overhead.
  • the downlink signal includes at least one of the following: an SS/PBCH and a channel state reference signal CSI-RS.
  • the signal quality includes at least one of the following: a reference signal received power RSRP, a reference signal received quality RSRQ, and a signal to noise ratio SINR.
  • the method further includes: selecting a new beam among the candidate beams; and transmitting information of the new beam to the network device.
  • the communication device can implement the above communication method.
  • the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a device (such as a terminal device or the like).
  • the above method can be implemented by software, hardware, or by executing corresponding software by hardware.
  • the structure of the communication device includes a processor and a memory; the processor is configured to support the device to perform a corresponding function in the foregoing communication method.
  • the memory is for coupling with a processor that holds the necessary programs (instructions) and/or data for the device.
  • the communication device may further include a communication interface for supporting communication between the device and other network elements.
  • the communication device may include a sending unit, a receiving unit, and a processing unit.
  • the sending unit and the receiving unit are respectively configured to implement the sending and receiving functions in the above method, and the processing unit is configured to implement the processing function in the above method.
  • the receiving unit is configured to receive a reference threshold sent by the network device and one or more downlink signals
  • the processing unit is configured to perform measurement on the received one or more downlink signals to obtain the one or more downlinks One or more signal qualities corresponding to the signal; and power corresponding to the reference reference signal according to the one or more signal qualities, the reference threshold, and one or more power offset values corresponding to the one or more downlink signals And determining, by the one or more differences of the offset values, a candidate beam; wherein a quality threshold corresponding to the reference reference signal is the reference threshold, where the power offset value refers to a transmit power and a synchronization signal of the downlink signal / The difference in transmission power of the physical broadcast channel block SS/PBCH.
  • the receiving unit may be an input unit such as an input circuit or an input communication interface; the transmitting unit may be an output unit such as an output circuit or an output communication interface.
  • the receiving unit may be a receiver (which may also be referred to as a receiver); the transmitting unit may be a transmitter (which may also be referred to as a transmitter).
  • a method for determining a beam includes: transmitting a reference threshold to a terminal device; transmitting one or more downlink signals to the terminal device; and receiving information of a new beam sent by the terminal device Wherein the new beam is a beam selected among candidate beams, the candidate beam being one or more signal qualities, reference thresholds, and one or more of the terminal devices obtained from measuring one or more downlink signals The beam corresponding to the difference between the PC_SS corresponding to the downlink signal and the PC_SS corresponding to the reference reference signal.
  • the terminal device considers the transmission power of the downlink signal when selecting the beam according to the threshold of the signal quality, so that the network device can accurately determine the candidate beam.
  • the method further includes: transmitting information for indicating a reference reference signal, and indicating PC_SS information corresponding to the reference reference signal and the one or more downlink signals to the terminal device.
  • the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a device (such as a network device, a baseband single board, etc.).
  • the above method can be implemented by software, hardware, or by executing corresponding software by hardware.
  • the structure of the communication device includes a processor and a memory; the processor is configured to support the device to perform a corresponding function in the foregoing communication method.
  • the memory is for coupling with a processor that holds the programs (instructions) and data necessary for the device.
  • the communication device may further include a communication interface for supporting communication between the device and other network elements.
  • the communication device may include a receiving unit and a sending unit.
  • the receiving unit and the transmitting unit are respectively configured to implement the receiving and transmitting functions in the above method.
  • the sending unit is configured to send a reference threshold to the terminal device
  • the sending unit is further configured to send one or more downlink signals to the terminal device
  • the receiving unit is configured to receive a new beam sent by the terminal device.
  • Information wherein the new beam is a beam selected among candidate beams, and the candidate beam is one or more signal qualities, reference thresholds, and the one of the terminal devices obtained according to one or more downlink signals.
  • the receiving unit may be an input unit such as an input circuit or a communication interface; the transmitting unit may be an output unit such as an output circuit or a communication interface.
  • the receiving unit may be a receiver (which may also be referred to as a receiver); the transmitting unit may be a transmitter (which may also be referred to as a transmitter).
  • a still further aspect of the present application provides a signal quality measurement method, including: receiving one or more downlink signals sent by a network device; and performing measurement on the received one or more downlink signals to obtain the one or Determining one or more signal qualities corresponding to the plurality of downlink signals; determining a difference between a transmit power of each of the one or more downlink signals and a measured signal quality of each of the downlink signals; a difference between a transmission power of each downlink signal and a signal quality, selecting a signal quality of the reported downlink signal in the one or more downlink signals; and transmitting a signal quality of the selected downlink signal to the network device.
  • the terminal device can select the signal quality of the reported downlink signal according to the difference between the transmit power of the downlink signal and the measured signal quality of the downlink signal, so that the network device can accurately determine the quality of the beam/channel.
  • the communication device can implement the above communication method.
  • the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a device (such as a terminal device or the like).
  • the above method can be implemented by software, hardware, or by executing corresponding software by hardware.
  • the structure of the communication device includes a processor and a memory; the processor is configured to support the device to perform a corresponding function in the foregoing communication method.
  • the memory is for coupling with a processor that holds the necessary programs (instructions) and/or data for the device.
  • the communication device may further include a communication interface for supporting communication between the device and other network elements.
  • the communication device may include a sending unit, a receiving unit, and a processing unit.
  • the sending unit and the receiving unit are respectively configured to implement the sending and receiving functions in the above method, and the processing unit is configured to implement the processing function in the above method.
  • the receiving unit is configured to receive one or more downlink signals sent by the network device, and the processing unit is configured to: perform measurement on the received one or more downlink signals, to obtain corresponding to the one or more downlink signals.
  • the processing unit is further configured to determine a difference between a transmit power of each of the one or more downlink signals and a measured signal quality of each of the downlink signals;
  • the processing unit is further configured to: select, according to a difference between a transmit power and a signal quality of each downlink signal, a signal quality of the reported downlink signal in the one or more downlink signals; and a sending unit, configured to send The signal quality of the selected downlink signal is given to the network device.
  • the receiving unit may be an input unit such as an input circuit or an input communication interface; the transmitting unit may be an output unit such as an output circuit or an output communication interface.
  • the receiving unit may be a receiver (which may also be referred to as a receiver); the transmitting unit may be a transmitter (which may also be referred to as a transmitter).
  • a further aspect of the present application provides a signal quality measurement method, including: transmitting one or more downlink signals to a terminal device; and receiving a signal quality of a downlink signal reported by the terminal device, where the reported downlink The signal quality of the signal is selected by the terminal device based on a difference between a transmission power and a signal quality of each of the one or more downlink signals.
  • the terminal device can select the signal quality of the reported downlink signal according to the difference between the transmit power of the downlink signal and the measured signal quality of the downlink signal, so that the network device can accurately determine the quality of the beam/channel.
  • the communication device may be a chip (such as a baseband chip, or a communication chip, etc.) or a device (such as a network device, a baseband single board, etc.).
  • the above method can be implemented by software, hardware, or by executing corresponding software by hardware.
  • the structure of the communication device includes a processor and a memory; the processor is configured to support the device to perform a corresponding function in the foregoing communication method.
  • the memory is for coupling with a processor that holds the programs (instructions) and data necessary for the device.
  • the communication device may further include a communication interface for supporting communication between the device and other network elements.
  • the communication device may include a receiving unit and a sending unit.
  • the receiving unit and the transmitting unit are respectively configured to implement the receiving and transmitting functions in the above method.
  • the sending unit is configured to send one or more downlink signals to the terminal device
  • the receiving unit is configured to receive the signal quality of the downlink signal reported by the terminal device, where the signal quality of the reported downlink signal is The terminal device is selected according to a difference between a transmission power of each downlink signal and a signal quality of one or more downlink signals.
  • the receiving unit may be an input unit such as an input circuit or a communication interface; the transmitting unit may be an output unit such as an output circuit or a communication interface.
  • the receiving unit may be a receiver (which may also be referred to as a receiver); the transmitting unit may be a transmitter (which may also be referred to as a transmitter).
  • a computer readable storage medium having stored therein instructions that, when executed on a computer, cause the computer to perform the methods described in the various aspects above.
  • a computer program product comprising instructions, when executed on a computer, causes the computer to perform the methods described in the various aspects above.
  • FIG. 1 is a schematic diagram of a communication system to which an embodiment of the present application is applied;
  • FIG. 2 is a schematic diagram of an interaction process of a beam selection method according to an embodiment of the present disclosure
  • FIG. 3 is a schematic diagram of an interaction process of a signal quality measurement method according to an embodiment of the present disclosure
  • FIG. 4 is a schematic structural diagram of a communication device according to an embodiment of the present application.
  • FIG. 5 is a schematic structural diagram of another communication apparatus according to an embodiment of the present disclosure.
  • FIG. 6 is a schematic structural diagram of still another communication apparatus according to an embodiment of the present application.
  • FIG. 7 is a schematic structural diagram of still another communication apparatus according to an embodiment of the present application.
  • FIG. 8 is a schematic structural diagram of a simplified terminal device according to an embodiment of the present application.
  • FIG. 9 is a schematic structural diagram of a simplified network device according to an embodiment of the present application.
  • Quasi-co-location A quasi-homologous relationship is used to indicate that one or more identical or similar communication characteristics exist between multiple resources. For multiple resources with the same relationship, the same or similar Communication configuration. For example, if two antenna ports have a parity relationship, the large-scale characteristics of the channel in which one port transmits one symbol can be inferred from the large-scale characteristics of the channel through which one symbol transmits one symbol. Large-scale features may include: delay spread, average delay, Doppler spread, Doppler shift, average gain, receive parameters, receive beam number of the terminal device, transmit/receive channel correlation, receive angle of arrival, receiver antenna Spatial correlation, Angel-of-Arrival (AoA), average angle of arrival, expansion of AoA, etc.
  • the parity indication is used to indicate whether the at least two sets of antenna ports have a parity relationship: the parity indication is used to indicate whether channel state information reference signals sent by the at least two groups of antenna ports are from the same transmission point. Or the parity indication is used to indicate whether the channel state information reference signals sent by the at least two groups of antenna ports are from the same beam group.
  • the configuration and indication of the quasi-homolocation hypothesis can be used to assist the receiver in receiving and demodulating the signal.
  • the receiving end can confirm that the A port and the B port have a QCL relationship, that is, the large-scale parameter of the signal measured on the A port can be used for signal measurement and demodulation on the B port.
  • a beam is a communication resource.
  • the beam can be a wide beam, or a narrow beam, or other type of beam.
  • the beamforming technique can be beamforming techniques or other technical means.
  • the beamforming technology can be specifically digital beamforming technology, analog beamforming technology, and hybrid digital/analog beamforming technology. Different beams can be considered as different resources.
  • the same information or different information can be transmitted through different beams.
  • multiple beams having the same or similar communication characteristics can be considered as one beam.
  • One beam may include one or more antenna ports for transmitting a data channel, a control channel, a sounding signal, etc., for example, the transmitting beam may be a signal intensity distribution formed in different directions of the space after the signal is transmitted through the antenna.
  • the receive beam may refer to a signal strength distribution of wireless signals received from the antenna in different directions in space. It can be understood that one or more antenna ports forming one beam can also be regarded as one antenna port set.
  • the beam can be embodied in the protocol as a spatial filter.
  • the embodiment of the beam in the protocol may also be an antenna port qcl and a spatial Rx parameter.
  • the representation of the beam in the protocol may be the number of various signals, such as the number of the CSI-RS, the number of the SS/PBCH, the number of the SRS (sounding reference singal), and the number of the tracking reference singal (TRS). Wait.
  • Spatial QCL can be considered a type of QCL. There are two angles to understand for spatial: from the sender or from the receiver. From the perspective of the transmitting end, if the two antenna ports are spatially quasi-co-located, it means that the corresponding beam directions of the two antenna ports are spatially identical. From the perspective of the receiving end, if the two antenna ports are spatially quasi-co-located, it means that the receiving end can receive the signals transmitted by the two antenna ports in the same beam direction.
  • FIG. 1 is a schematic diagram of a communication system to which an embodiment of the present application is applied.
  • the communication system may include at least one network device 100 (only one shown) and one or more terminal devices 200 connected to the network device 100.
  • the network device 100 can be any device having a wireless transceiving function. Including but not limited to: a base station (eg, a base station NodeB, an evolved base station eNodeB, a base station in a fifth generation (5G) communication system, a base station or network device in a future communication system, an access node in a WiFi system , wireless relay node, wireless backhaul node, etc.
  • the network device 100 may also be a wireless controller in a cloud radio access network (CRAN) scenario.
  • the network device 100 may also be a network device in a 5G network or a network device in a future evolved network; it may also be a wearable device or an in-vehicle device or the like.
  • the network device 100 may also be a small station, a transmission reference point (TRP) or the like. Of course, no application is not limited to this.
  • the terminal device 200 is a device with wireless transceiving function that can be deployed on land, including indoor or outdoor, handheld, wearable or on-board; it can also be deployed on the water surface (such as a ship, etc.); it can also be deployed in the air (for example, an airplane, Balloons and satellites, etc.).
  • the terminal device may be a mobile phone, a tablet, a computer with wireless transceiver function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, and industrial control ( Wireless terminal in industrial control, wireless terminal in self driving, wireless terminal in remote medical, wireless terminal in smart grid, transportation safety A wireless terminal, a wireless terminal in a smart city, a wireless terminal in a smart home, and the like.
  • a terminal device may also be referred to as a user equipment (UE), an access terminal device, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, and a terminal (terminal). ), terminal equipment, wireless communication equipment, UE proxy or UE device, and the like.
  • system and “network” in the embodiments of the present invention may be used interchangeably.
  • Multiple means two or more, and in view of this, "a plurality” may also be understood as “at least two” in the embodiment of the present invention.
  • the character "/” unless otherwise specified, generally indicates that the contextual object is an "or" relationship.
  • the embodiment of the present application provides a method for determining a beam and a communication device.
  • the terminal device When selecting a beam according to a threshold of a signal quality, the terminal device considers the transmission power of the downlink signal, so that the network device can accurately determine the candidate beam.
  • FIG. 2 is a schematic diagram of an interaction process of a method for determining a beam according to an embodiment of the present disclosure.
  • the method 200 may include the following steps:
  • the network device sends a reference threshold to the terminal device.
  • the terminal device receives a reference threshold sent by the network device.
  • the network device sends one or more downlink signals to the terminal device.
  • the terminal device receives one or more downlink signals sent by the network device.
  • the downlink signal may be a channel state information reference signal (CSI-RS) CSI-RS or a synchronization signal/physical broadcast channel (SS/PBCH) block.
  • CSI-RS channel state information reference signal
  • SS/PBCH synchronization signal/physical broadcast channel
  • the terminal device performs measurement on the received one or more downlink signals to obtain one or more signal qualities corresponding to the one or more downlink signals.
  • the terminal device performs a power offset value corresponding to the reference reference signal according to the one or more signal qualities, the reference threshold, and the one or more power offset values Pc_SS corresponding to the one or more downlink signals.
  • a candidate beam is determined by one or more differences of Pc_SS.
  • the quality threshold corresponding to the reference reference signal is the reference threshold, and the power offset value Pc_SS refers to the sending of a non-zero power channel state information reference signal (non-zero power CSI-RS, NZP CSI-RS).
  • the ratio of the power to the transmission power of the synchronization signal/physical broadcast channel block may be the transmission power of the non-zero power channel state information reference signal divided by the transmission power of the synchronization signal/physical broadcast channel block, or the synchronization signal/physical broadcast channel
  • the transmit power of the block is divided by the transmit power of the non-zero power channel state information reference signal. This ratio reflects the power deviation of the two transmitted signals and is equivalent to the difference in the decibel (dB) quantization mode.
  • the power described above is the power of the non-zero power channel state information reference signal or the synchronization signal/physical broadcast channel block on each resource element (RE).
  • S205 selecting a new beam in the candidate beam.
  • the terminal device sends information about the new beam to the network device.
  • the network device receives information about the new beam sent by the terminal device.
  • the candidate beam is one or more signal qualities obtained by the terminal device according to one or more downlink signals, a reference threshold, and a PC_SS corresponding to the one or more downlink signals and a PC_SS corresponding to the reference reference signal.
  • One or more beams determined by the difference, the new beam being a beam selected among the one or more candidate beams.
  • a new beam is selected from the one or more candidate beams in a variety of ways. For example, the candidate beam with the best signal quality is used as the new beam, or the beam with the largest candidate beam number is used as the new beam, or one of the candidate beams is arbitrarily selected as the new beam, which is not limited in the present application.
  • the discovery of the candidate beam is based on the signal quality of the measured downlink signal (which may be the reference signal here).
  • the signal quality includes various types, such as reference signal receiving power (RSRP), reference signal receiving quality (RSRQ), and signal-to-noise ratio (SINR).
  • RSRP reference signal receiving power
  • RSRQ reference signal receiving quality
  • SINR signal-to-noise ratio
  • the network device only configures a unique reference threshold for all CSI-RSs.
  • the transmission power of each CSI-RS may be different, which may result in different signal qualities of the downlink signals received by the terminal device, and the signal quality of the detected candidate beams is determined according to a unique threshold, so that the determination result is not accurate enough.
  • different CSI-RS transmission powers are different, corresponding threshold values are adjusted, and candidate beams are determined by the adjusted threshold values.
  • the present invention introduces the concept of a reference reference signal.
  • the reference reference signal may be any reference signal selected by the network device, or may be a reference signal having a quasi-co-location (QCL) relationship with a physical downlink control channel (PDCCH).
  • the method 200 further includes: receiving, by the network device, information for indicating a reference reference signal, where the information indicating the reference reference signal includes a reference reference signal Logo.
  • the network device configures CSI-RS#0 as a reference reference signal, and sends the CSI-RS index information to the terminal device, and the index information may be a CSI-RS resource number, for example, a CSI-RS resource ID.
  • the network device further sends the transmit power of the SS/PBCH block and the power offset value PC_SS information corresponding to the one or more CSI-RSs to the terminal device.
  • the transmission power of different SS/PBCH blocks is the same, and the network device may send the transmission power value of one SS/PBCH block to the terminal device.
  • the transmission power of the SS/PBCH block may be transmitted to the terminal device through a system message or RRC signaling (for example, carried in the RRC IE of the servingcellconfigcommon).
  • the terminal device may determine the transmit power of the CSI-RS according to the transmit power of the SS/PBCH block and the power offset value PC_SS of the configured CSI-RS and the transmit power of the SS/PBCH.
  • the terminal device can obtain the transmission power of the first CSI-RS according to SS/PBCHPower plus PC_SS#1, according to SS/PBCHPower plus PC_SS#2.
  • the transmission power of the second CSI-RS is obtained.
  • the PC_SS corresponding to different CSI-RSs is different.
  • the transmit power of the SS/PBCH block is 10 dB
  • the PC_SS of CSI-RS#1 is 1 dB
  • the PC_SS of CSI-RS#2 is 2 dB
  • the PC_SS of CSI-RS#3 is 5 dB
  • the terminal device can acquire CSI-RS.
  • the transmission power of #1 is 11 dB
  • the transmission power of CSI-RS #2 is 12 dB
  • the transmission power of CSI-RS #3 is 15 dB.
  • a channel state information-CSI-RS resource set may be configured, including one or more single symbols (single-symbol)
  • the CSI-RS resource of the OFDM symbol is used for beam scanning. If the resource set is configured as repetition ON, the terminal device can assume that the network device uses the same transmit beam when transmitting each CSI-RS resource of the resource set; if configured to repetition OFF, the terminal device cannot perform the Assumption.
  • the PC_SS information corresponding to the reference reference signal and one or more CSI-RS resources may be:
  • the downlink signal set includes one or more CSI-RS resources.
  • the transmit power of all CSI-RS resources in the CSI-RS resource set for beam management is the same as the transmit power of one reference CSI-RS resource.
  • the reference CSI-RS resource may be predefined/configured.
  • the reference CSI-RS resource can be the resource with the highest or lowest number in the set.
  • the terminal device assumes that the PC_SS of other resources in the set refers to the PC_SS of the resource.
  • the network device may transmit configuration information such as the above reference threshold, the transmit power of the SS/PBCH block, the power offset value PC_SS of each CSI-RS and the SS/PBCH block, in whole or in part, by one or more signaling.
  • the network device may send the above configuration information to the terminal device by using one or more of broadcast information, system message, RRC signaling, MAC-CE signaling, and DCI signaling.
  • the broadcast information is sent to the terminal device through a physical broadcast channel (PBCH); the system message, the RRC signaling, and the MAC-CE signaling are sent to the physical downlink shared channel (PDSCH).
  • PDSCH physical downlink shared channel
  • the DCI signaling is sent to the terminal device through a physical downlink control channel (PDCCH).
  • the terminal device receives the one or more signalings, including receiving broadcast information, system messages, RRC signaling, MAC-CE signaling, and DCI signaling.
  • the terminal device obtains DCI by receiving and demodulating the PDCCH, obtains broadcast information by receiving and demodulating the PBCH, and obtains system message, RRC signaling, and MAC-CE signaling by receiving and demodulating the PDSCH.
  • the network device After the network device is configured with the above parameters, the network device sends one or more downlink signals to the terminal device.
  • the terminal device receives the one or more downlink signals.
  • the sent downlink signal carries an identifier of the downlink signal, for example, an identifier of the CSI-RS, and an index of the SS/PBCH block.
  • the terminal device learns that the downlink signals are used for candidate beam detection according to the identifier of the downlink signal.
  • the network device sends the downlink signal according to the relevant configuration of S201.
  • the network device sends the CSI-RS sequence to the physical device according to the CSI-RS resource configuration, including the frequency and time resource location, beam direction, period and offset, power, and the like.
  • the signal is sent through the antenna.
  • the terminal device measures the downlink signal. Taking RSRP measurement as an example, as shown in Table 1, the terminal device receives five downlink signals from CSI-RS resource#1 to CSI-RS resource#4 and SS/PBCH#1, and separately measures the downlink signals. Layer 1 - Reference Signal Received Power (L1-RSRP) #1 - L1 - RSRP #5.
  • L1-RSRP Reference Signal Received Power
  • Table 1 shows the measured signal quality example
  • the terminal device After acquiring the reference threshold and measuring the obtained signal quality, the terminal device determines the candidate beam according to the signal quality, the reference threshold, and the transmission power.
  • the terminal device determines the candidate beam according to the signal quality obtained by the above measurement, the reference threshold, and the difference between the PC_SS corresponding to the one or more downlink signals and the PC_SS corresponding to the reference reference signal.
  • the terminal device determines different threshold values for comparison. Then S204 specifically includes:
  • a beam corresponding to a reference signal whose signal quality is greater than the quality threshold is used as a candidate beam.
  • CSI-RS resource #0 is used as the reference reference signal, and of course any other downlink signal can be used as the reference reference signal.
  • the reference threshold of the network device configuration is the quality threshold of the reference reference signal.
  • the quality threshold is a reference threshold, and a sum of a difference between the PC_SS corresponding to the one or more reference signals and the corresponding PC_SS of the reference reference signal.
  • threshold #1 threshold#0+(PC_SS#1 of CSI-RS resource#1) - PC_SS#0) of the reference CSI-RS resource#0.
  • PC_SS#1 of the CSI-RS resource #11 - PC_SS#0 of the reference CSI-RS resource #0 (transmission power of CSI-RS resource #1 - transmission power of SS/PBCH) - (reference CSI-RS resource #0's transmit power-SS/PBCH transmit power), where PC_SS#1, PC_SS#0 are configured by the network device to the terminal device. That is, the influence of the transmission power of the downlink signal is considered on the basis of the reference threshold.
  • threshold #2 threshold#0+(PC_SS of CSI-RS resource#2) #2 - PC_SS#0 of the reference CSI-RS resource#0).
  • the signal quality of the reference signal #1 and the reference signal #2 are respectively greater than the corresponding thresholds after adjustment, and the beams corresponding to the two reference signals can be used as candidate beams.
  • the reference signals #3 to #5 cannot be used as candidate beams because the signal quality is smaller than the corresponding threshold after adjustment.
  • the terminal device first adjusts according to the transmission power, and then compares with the threshold. Then S204 specifically includes:
  • a beam corresponding to the downlink signal whose updated signal quality is greater than the reference threshold is used as a candidate beam.
  • the L1-RSRP of the downlink signal measured in Table 1 is adjusted and the adjusted L1-RSRP is compared with the reference threshold as shown in Table 3 below:
  • the updated signal quality is the sum of the signal quality and the difference between the PC_SS corresponding to the one or more downlink signals and the corresponding PC_SS of the reference reference signal.
  • the terminal device measures the signal quality of each downlink signal, and first adjusts the measured signal quality according to the transmission power of each downlink signal.
  • the adjusted L1-RSRP#1 L1-RSRP#1+(PC_SS#1 of CSI-RS resource#1-PC_SS#0 of the reference CSI-RS resource#0 )
  • the adjusted L1-RSRP#1 takes into account the difference between the transmission power of the CSI-RS resource#1 and the reference reference signal, and then the adjusted L1-RSRP#1 and the threshold #0 (reference reference signal) The quality threshold is compared.
  • the adjusted L1-RSRP#2 L1-RSRP#2+(PC_SS#2 of CSI-RS resource#2-PC_SS#0 of the reference CSI-RS resource#0 )
  • the adjusted L1-RSRP#2 considers the difference between the transmission power of the CSI-RS resource#2 and the reference reference signal, and then the adjusted L1-RSRP#2 and the threshold #0 (reference reference signal) The quality threshold is compared.
  • the adjusted L1-RSRP#5 L1-RSRP#5-the PC_SS#0 of the reference CSI-RS resource#0
  • the adjusted L1-RSRP#5 considers SSB#1 and The difference between the transmission powers of the reference reference signals, and then the adjusted L1-RSRP#5 can be compared with the threshold #0 (the quality threshold of the reference reference signal).
  • the signal quality of the adjusted reference signal #1 and the reference signal #2 are respectively greater than the reference threshold #0, and the beams corresponding to the two reference signals can be used as candidate beams.
  • the signal quality of the adjusted reference signals #3 to #5 is smaller than the reference threshold #0, respectively, and cannot be used as a candidate beam.
  • the terminal device After determining the candidate beam, the terminal device selects one of the one or more candidate beams that satisfy the condition as a new beam, and transmits a signal to the network device based on the new beam.
  • the network device receives the signal. Specifically, the terminal device feeds back the information of the new beam according to the configuration of the network device, and specifically, the identifier of the new beam is fed back.
  • the method by which the terminal device selects one of the candidate beams that satisfy the condition as a new beam depends on the terminal device implementation. For example, choose the best based on signal quality; or choose the best based on the measured received signal quality and transmit power.
  • Signaling to a network device based on a new beam also depends on the terminal device implementation. For example, under the condition of beam mutuality, the terminal device may send a signal to the network device by using a new beam (for the terminal device, the new beam is measured based on the downlink signal, so the receiving beam); or Under the condition of no beam mutuality, the terminal device can send signals to the network device through multiple transmission beams in a scanning manner, and the new beam can be used as a reference for one direction.
  • the information that the terminal device sends the new beam to the network device may be through a physical random access channel (PRACH), a physical uplink control channel (PUCCH), or a physical uplink shared channel (PUSCH). ) etc. send.
  • PRACH physical random access channel
  • PUCCH physical uplink control channel
  • PUSCH physical uplink shared channel
  • the terminal device feeds back the following: the physical layer of the terminal device determines a new beam that meets the threshold. For example, in step S204, the terminal device determines CSI-RS resource #1 and CSI-RS resource#.
  • the beam represented by 2 satisfies the threshold and can be used as an alternative to the new beam.
  • the physical layer of the terminal device reports the new beam that meets the condition to the upper layer of the terminal device (for example, the MAC layer), and the upper layer of the terminal device selects an associated RACH resource according to CSI-RS resource#1 and CSI-RS resource#2, and configures The physical layer to the terminal device.
  • the upper layer of the terminal device for example, the MAC layer
  • the method for selecting a random access channel (RACH) resource by the terminal device at a high level may be: first selecting a better one from CSI-RS resource#1 and CSI-RS resource#2. As a new beam, for example, CSI-RS resource#2, and then selecting the RACH resource according to the association relationship between the CSI-RS resource#2 and the RACH resource;
  • RACH random access channel
  • the terminal device upper layer may also send the number of the selected CSI-RS resource #2 to the physical layer of the terminal device.
  • the physical layer of the terminal device transmits the physical random access channel (PRACH) according to the configuration of the RACH resource.
  • the terminal device transmits the PRACH using the corresponding transmit beam of the CSI-RS resource #2.
  • PRACH physical random access channel
  • the association between the RACH resource and the CSI-RS resource is predefined by the protocol or configured by the network device by one or more signaling.
  • the information interaction between the physical layer of the terminal device and the upper layer of the terminal device belongs to an internal implementation of the interaction between the layers of the terminal device protocol stack.
  • the terminal device feeds back information about the new beam of the network device.
  • the terminal device when selecting a beam according to a threshold of a signal quality, the terminal device considers the transmission power of the downlink signal, so that the network device can accurately determine the candidate beam.
  • the transmission power of the CSI-RS may also be determined by the transmission power of the PDSCH and the power offset value of the configured CSI-RS and the transmission power of the PDSCH.
  • the problem of accuracy or fairness in beam selection is solved.
  • the network device uses the same transmission when transmitting different CSI-RS resources. power. Accordingly, the network device should use the same transmit power to send different CSI-RS resources. In this way, each CSI-RS resource and SS/PBCH can use a uniform threshold for beam selection.
  • the network device may configure a threshold only for the SS/PBCH block, and the terminal device determines the threshold of each CSI-RS by the SS/PBCH block and the power offset value PC_SS of each CSI-RS.
  • the network device may separately configure thresholds for the SS/PBCH block and each CSI-RS.
  • the network device may configure different thresholds for different cells, or different thresholds for different carrier configurations, and configure different thresholds for different bandwidth parts (BWPs). .
  • BWPs bandwidth parts
  • the network device may configure a threshold for only one cell.
  • the terminal device determines different thresholds of different cells according to the transmit power offset values of the SS/PBCH blocks of different cells.
  • the different thresholds of different carriers may be determined according to the transmit power offset values of the different carrier SS/PBCH blocks, or different thresholds of different BWPs may be determined according to the transmit power offset values of the SS/PBCH blocks corresponding to different BWPs.
  • the network device sends a reference signal to the terminal device, and the terminal device reports the signal quality of the measured reference signal to the network device, so that the network device determines the transmit beam.
  • the terminal device generally reports the signal quality with good signal quality to the network device. However, it is not accurate enough to determine the quality of the beam/channel based solely on the signal quality.
  • the embodiment of the present application provides a signal quality measurement method and a communication device.
  • the terminal device can select a network device according to a difference between a signal quality of a downlink signal and a signal quality of a downlink signal that is measured. Accurately determine the quality of the beam/channel.
  • FIG. 3 is a schematic diagram of an interaction process of a signal quality measurement method according to an embodiment of the present disclosure, where the method may include the following steps:
  • the network device sends one or more downlink signals to the terminal device.
  • the terminal device receives one or more downlink signals sent by the network device.
  • the terminal device performs measurement on the received one or more downlink signals to obtain one or more signal qualities corresponding to the one or more downlink signals.
  • the terminal device determines a difference between a transmit power of each downlink signal in the one or more downlink signals and a measured signal quality of each downlink signal.
  • the terminal device selects, according to a difference between a transmit power of each downlink signal and a signal quality, a signal quality of the reported downlink signal in the one or more downlink signals.
  • the terminal device sends a signal quality of the selected downlink signal to the network device.
  • the network device receives the signal quality of the downlink signal reported by the terminal device, where the signal quality of the reported downlink signal is the transmission power and signal of each downlink signal of the terminal device according to one or more downlink signals. The difference in quality is chosen.
  • the network device sends a downlink signal to the terminal device, and the terminal device measures the downlink signal and reports the measurement result.
  • Network devices need to configure measurements and reports before measuring and reporting.
  • the network device transmits the transmission power of the SS/PBCH block and the power offset value PC_SS of the transmission power of each CSI-RS and SS/PBCH block to the terminal device.
  • the terminal device receives the transmit power of the SS/PBCH block sent by the network device, and receives the PC_SS information sent by the network device to indicate one or more downlink signals.
  • the network device sends the transmission power of the SS/PBCH block to the terminal device through system messages, RRC signaling (for example, carried in the RRC IE of the servingcellconfigcommon).
  • the transmission power of the CSI-RS may be determined by the transmission power of the SS/PBCH block and the power offset value PC_SS of the configured CSI-RS and SS/PBCH transmission power.
  • Tx power of CSI-RS resource #x indicates the transmission power of the CSI-RS with the index number x
  • the SS/PBCH power indicates the transmission power of the SS/PBCH block
  • the PC_SS#x indicates the CSI-RS corresponding to the index number x. Power offset value.
  • the network device may also configure a metric of the number of beams and signal quality that is allowed to be reported, and the like.
  • the network device sends one or more downlink signals to the terminal device.
  • the terminal device receives the one or more downlink signals.
  • the sent downlink signal carries an identifier of the downlink signal, for example, an identifier of the CSI-RS, and an index of the SS/PBCH fast.
  • the terminal device knows that these downlink signals are used for signal quality measurement according to the identification of the downlink signal.
  • the network device sends a downlink signal.
  • the network device sends the CSI-RS sequence to the physical device according to the CSI-RS resource configuration, including the frequency and time resource location, beam direction, period and offset, power, and the like.
  • the signal is sent through the antenna.
  • the terminal device After receiving the downlink signal, the terminal device measures the downlink signal. Taking RSRP measurement as an example, as shown in Table 4, the terminal device receives CSI-RS resource #1 to CSI-RS resource #4, and separately measures the layer 1 - reference signal received power of these downlink signals (L1-RSRP). ) #1 ⁇ L1-RSRP#4.
  • the transmission power is subtracted from the received power, that is, the path loss and the antenna gain are obtained, thereby obtaining the communication link quality of the actual beam pair, so that the network device can accurately determine the beam/channel quality.
  • the terminal device determines the beam quality according to the processing result in the third column of Table 4. For example, the terminal device sorts according to the processing result of the third column as follows:
  • the terminal device shall feed back the information of the CSI-RS resource #1 to the network device according to the processing result.
  • the terminal device performs feedback according to the configuration of the network device, including: reporting the number of beams and reporting the amount.
  • the terminal device can report CSI-RS resource#1 and CSI-RS resource#3 and their signal quality and signals according to the processing result of S305.
  • the quality can be reported by differential reporting, that is, the absolute signal quality of the beam 1 is reported, and then the difference between the signal quality of the beam 2 and the beam 1 is reported.
  • a report format is shown in Table 5 below:
  • the beam ID may be an absolute number of the CSI-RS resource or a relative number thereof.
  • the absolute number of CSI-RS resource#1 is expressed as a bit number of 000001; the absolute number of CSI-RS resource#3, expressed as a bit may be 000011.
  • the bit length is determined by the maximum number of CSI-RS resources.
  • the relative number of CSI-RS resource #1 is expressed as a bit of 01; the relative number of CSI-RS resource #3, expressed as a bit of 11.
  • the bit length is determined by the number of CSI-RS resources measured by the configuration (for example, only CSI-RS resource #1, #2, #3, #4) is configured.
  • the terminal device can select the signal quality of the reported downlink signal according to the difference between the transmission power of the downlink signal and the measured signal quality of the downlink signal, so that the network device can be accurate. Determine the quality of the beam/channel.
  • the transmit power of the SS/PBCH block has only one value, and there may be multiple beams for transmitting the SS/PBCH block, and each SS/PBCH block needs different transmit power, CSI-RS and SS/PBCH.
  • the power offset value of the block refers to the power offset value of which SS/PBCH block, which are worthy of consideration.
  • a plurality of transmission powers are set for the SS/PBCH block, corresponding to the index of the SS/PBCH block.
  • the SS/PBCH resource corresponding to the index of each SS/PBCH block is separately configured with the transmission power. Then, the power offset values of the CSI-RS and the SS/PBCH block can be determined according to the following manner:
  • the terminal device assumes that the power offset value of the CSI-RS and the SS/PBCH block refers to the power offset value of the transmit power of the CSI-RS and the SS/PBCH block of the CSI-RS QCL.
  • Another implementation manner is: when configuring the power offset value of the CSI-RS and the SS/PBCH block, explicitly indicating that the power offset value is the SS/PBCH resource corresponding to the SS/PBCH block index of the CSI-RS.
  • the power offset value of the transmit power is: when configuring the power offset value of the CSI-RS and the SS/PBCH block, explicitly indicating that the power offset value is the SS/PBCH resource corresponding to the SS/PBCH block index of the CSI-RS.
  • the terminal device may not be correctly determined. For example, when the power offset value of the PDSCH and the CSI-RS and the power offset value of the SS/PBCH block and the CSI-RS are simultaneously configured, there may be ambiguity.
  • Transmit power of CSI-RS transmit power of SS/PBCH block + PC_SS
  • CSI-RS transmit power PDSCH transmit power + PC_SS
  • the transmission power of the CSI-RS may be ambiguous.
  • One embodiment is to prioritize a plurality of possible transmit power determination methods. For example, the terminal device considers that when the power offset value of the SS/PBCH block and the CSI-RS is configured, the power offset value of the SS/PBCH block and the CSI-RS and the transmit power of the SS/PBCH block are preferentially used to determine the CSI- The transmit power of the RS.
  • the transmission power of the CSI-RS can be uniquely determined by the method of defining the priority.
  • the transmit power of the SS/PBCH block is carried in multiple messages (such as SIB1 and serving cellconfigcommon). If there is a difference, how to solve it.
  • One embodiment is to prioritize values for a variety of possible transmit powers. For example, the terminal device considers that the transmit power value of the SS/PBCH block carried by the SIB1 is prioritized; or the terminal device considers that the transmit power value of the SS/PBCH block carried in the serving cellconfigcommon is prioritized, and the configuration of the SIB1 may be updated.
  • FIG. 4 is a schematic structural diagram of a communication apparatus according to an embodiment of the present disclosure.
  • the communication apparatus 400 may include:
  • the receiving unit 41 is configured to receive a reference threshold and one or more downlink signals sent by the network device.
  • the processing unit 42 is configured to perform measurement on the received one or more downlink signals to obtain one or more signal qualities corresponding to the one or more downlink signals; according to the one or more signal qualities, Determining a candidate beam by using a reference threshold and one or more differences between one or more power offset values corresponding to the one or more downlink signals and a power offset value corresponding to the reference reference signal;
  • the quality threshold corresponding to the reference reference signal is the reference threshold, where the power offset value is the difference between the transmit power of the downlink signal and the transmit power of the synchronization signal/physical broadcast channel block SS/PBCH block. .
  • the processing unit 42 is configured to: according to a reference threshold and one of a power offset value of the one or more power offset values corresponding to the one or more downlink signals and a reference power reference value Or a plurality of differences, determining one or more quality thresholds, the one or more quality thresholds respectively corresponding to the one or more signal qualities; respectively, the one or more signal qualities and the corresponding one or The plurality of quality thresholds are compared, and the beam corresponding to the downlink signal whose signal quality is greater than the corresponding quality threshold is used as the candidate beam.
  • the processing unit 42 is configured to: determine that the quality threshold is a power offset of the reference threshold corresponding to the one or more downlink signals and a corresponding power offset of the reference reference signal. The sum of the difference values of the shift values.
  • the processing unit 42 is configured to: according to one or more signal qualities and corresponding power of the one or more power offset values corresponding to the one or more downlink signals and the reference reference signal The difference between the offset values determines one or more updated signal qualities; the updated one or more beams corresponding to the downlink signal whose signal quality is greater than the reference threshold are used as candidate beams.
  • the processing unit 42 is specifically configured to: determine that the updated one or more signal qualities are respectively a signal quality of the one or more downlink signals and the one or more downlinks The sum of the difference between the power offset value of the signal and the corresponding power offset value of the reference reference signal.
  • the reference reference signal is a predefined reference reference signal or a reference signal having a quasi-homogonal relationship with the downlink control channel.
  • the receiving unit 41 is further configured to receive, by the network device, information used to indicate a reference reference signal, and a PC_SS corresponding to the reference reference signal and one or more downlink signals. information.
  • the PC_SS information corresponding to the reference reference signal and the one or more downlink signals includes: PC_SS information for indicating a downlink signal set, or a reference for indicating a downlink signal set.
  • the PC_SS information corresponding to the downlink signal wherein the PC_SS information corresponding to the downlink signal in the downlink signal set is PC_SS information corresponding to the reference downlink signal, and the downlink signal set includes one or more downlink signals.
  • the downlink signal includes at least one of the following: an SS/PBCH block and a channel state reference signal CSI-RS.
  • the signal quality includes at least one of the following: a reference signal received power RSRP, a reference signal received quality RSRQ, and a signal to noise ratio SINR.
  • the processing unit 42 is further configured to select a new beam among the candidate beams.
  • the apparatus also includes a transmitting unit 43 for transmitting information of the new beam to the network device.
  • the communication device provided by the present application corresponds to the method embodiment in FIG. 2 above, and all descriptions of the method embodiments are applicable to the communication device.
  • a communication device that considers transmitting power of a downlink signal when selecting a beam according to a threshold of signal quality, thereby enabling a network device to accurately select a candidate beam.
  • FIG. 6 is a schematic structural diagram of still another communication apparatus according to an embodiment of the present disclosure.
  • the communication apparatus 600 may include:
  • the receiving unit 61 is configured to receive one or more downlink signals sent by the network device.
  • the processing unit 62 is configured to perform measurement on the received one or more downlink signals to obtain one or more signal qualities corresponding to the one or more downlink signals;
  • the processing unit 62 is further configured to: determine a difference between a transmit power of each downlink signal in the one or more downlink signals and a measured signal quality of each of the downlink signals; a difference between a transmit power of the signal and a signal quality, and selecting a signal quality of the reported downlink signal among the one or more downlink signals;
  • the sending unit 63 is configured to send the signal quality of the selected downlink signal to the network device.
  • the communication device corresponds to the method embodiment in FIG. 3 above, and all descriptions of the method embodiments are applicable to the communication device. According to an embodiment of the present application, the communication device can accurately determine the signal quality of the reported downlink signal according to the difference between the transmission power of the downlink signal and the measured signal quality of the downlink signal. Determine the quality of the beam/channel.
  • the communication device described in FIG. 4 and FIG. 6 in the present application may be a terminal device or a chip or an integrated circuit installed in the terminal device.
  • FIG. 8 shows a schematic structural diagram of a simplified terminal device.
  • the terminal device uses a mobile phone as an example.
  • the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device.
  • the processor is mainly used for processing communication protocols and communication data, and controlling terminal devices, executing software programs, processing data of software programs, and the like.
  • Memory is primarily used to store software programs and data.
  • the RF circuit is mainly used for the conversion of the baseband signal and the RF signal and the processing of the RF signal.
  • the antenna is mainly used to transmit and receive RF signals in the form of electromagnetic waves.
  • Input and output devices such as touch screens, display screens, keyboards, etc., are primarily used to receive user input data and output data to the user. It should be noted that some types of terminal devices may not have input and output devices.
  • the processor When the data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs the baseband signal to the radio frequency circuit.
  • the radio frequency circuit performs radio frequency processing on the baseband signal, and then sends the radio frequency signal to the outside through the antenna in the form of electromagnetic waves.
  • the RF circuit receives the RF signal through the antenna, converts the RF signal into a baseband signal, and outputs the baseband signal to the processor, which converts the baseband signal into data and processes the data.
  • the memory may also be referred to as a storage medium or a storage device or the like.
  • the memory may be independent of the processor, or may be integrated with the processor, which is not limited in this embodiment of the present application.
  • an antenna and a radio frequency circuit having a transceiving function can be regarded as a receiving unit and a transmitting unit (also collectively referred to as a transceiving unit) of the terminal device, and a processor having a processing function is regarded as a processing unit of the terminal device.
  • the terminal device includes a receiving unit 81, a processing unit 82, and a transmitting unit 83.
  • the receiving unit 81 may also be referred to as a receiver, a receiver, a receiving circuit, etc.
  • the transmitting unit 83 may also be referred to as a transmitter, a transmitter, a transmitting circuit, or the like.
  • the processing unit may also be referred to as a processor, a processing board, a processing module, a processing device, and the like.
  • the receiving unit 81 is configured to perform steps S201 and S202 in the embodiment shown in FIG. 2; the processing unit 82 is configured to perform steps S203 and S204 in the embodiment shown in FIG. 2; and the transmitting unit 83 It is used to perform step S205 in the embodiment shown in FIG. 2.
  • the receiving unit 81 is configured to perform step S301 in the embodiment shown in FIG. 3; the processing unit 82 is configured to perform steps S302-S304 in the embodiment shown in FIG. 3; and the transmitting unit 83 is used. Step S305 in the embodiment shown in FIG. 3 is executed.
  • a communication device is also provided in the embodiment of the present application, and the communication device is configured to execute the foregoing communication method.
  • the communications apparatus includes: a receiver, configured to receive a reference threshold sent by the network device, and And a processing circuit, configured to perform the foregoing communication method, for example, to measure the received one or more downlink signals, to obtain the one or more And one or more signal qualities corresponding to the downlink signals, and is further configured to determine the candidate beam according to the signal quality, the reference threshold, and a difference between the PC_SS corresponding to the one or more downlink signals and the PC_SS corresponding to the reference reference signal.
  • the communication device includes: a receiver for receiving one or more downlink signals transmitted by the network device; and processing circuitry for performing the communication method, for example, for the one or more received
  • the downlink signals are measured to obtain one or more signal qualities corresponding to the one or more downlink signals, and are further configured to determine a transmit power and a measured location of each of the one or more downlink signals. Determining a difference in signal quality of each downlink signal, and also for selecting a signal of the reported downlink signal among the one or more downlink signals according to a difference between a transmission power of each downlink signal and a signal quality a transmitter, configured to transmit a signal quality of the selected downlink signal to the network device.
  • the communication device may be a chip or an integrated circuit when implemented.
  • the communication device when part or all of the communication methods of the foregoing embodiments are implemented by software, the communication device includes: a memory for storing a program; a processor, a program for executing the memory storage, when the program is executed, The communication device can be implemented to implement the communication method provided by the above embodiments.
  • the above memory may be a physically separate unit or may be integrated with the processor.
  • the communication device may also include only the processor.
  • the memory for storing the program is located outside the communication device, and the processor is connected to the memory through the circuit/wire for reading and executing the program stored in the memory.
  • the processor can be a central processing unit (CPU), a network processor (NP) or a combination of CPU and NP.
  • CPU central processing unit
  • NP network processor
  • the processor may further include a hardware chip.
  • the hardware chip may be an application-specific integrated circuit (ASIC), a programmable logic device (PLD), or a combination thereof.
  • the PLD may be a complex programmable logic device (CPLD), a field-programmable gate array (FPGA), a general array logic (GAL), or any combination thereof.
  • the memory may include a volatile memory such as a random-access memory (RAM); the memory may also include a non-volatile memory such as a flash memory.
  • RAM random-access memory
  • non-volatile memory such as a flash memory.
  • HDD hard disk drive
  • SSD solid-state drive
  • the memory may also include a combination of the above types of memories.
  • FIG. 5 is a schematic structural diagram of another communication apparatus according to an embodiment of the present disclosure.
  • the communication apparatus 500 includes:
  • the sending unit 51 is configured to send a reference threshold and one or more downlink signals to the terminal device.
  • the receiving unit 52 is configured to receive information about a new beam sent by the terminal device, where the new beam is a beam selected in a candidate beam, and the candidate beam is the terminal device according to the one or more signals a quality, the reference threshold, and a beam determined by one or more difference values of one or more power offset values corresponding to the one or more downlink signals and a power offset value corresponding to the reference reference signal;
  • the quality threshold corresponding to the reference reference signal is the reference threshold, and the power offset value refers to a difference between a transmit power of the downlink signal and a transmit power of the synchronization signal/physical broadcast channel block SS/PBCH.
  • the sending unit 51 is further configured to send information for indicating a reference reference signal, and PC_SS information corresponding to the reference reference signal and the one or more downlink signals to the terminal device.
  • the communication device provided by the present application corresponds to the method embodiment in FIG. 2 above, and all descriptions of the method embodiments are applicable to the communication device.
  • a communication apparatus provided by the embodiment of the present application when the terminal device selects a beam according to a threshold of signal quality, the transmission power of the downlink signal is considered, so that the communication device can accurately select the candidate beam.
  • FIG. 7 is a schematic structural diagram of still another communication apparatus according to an embodiment of the present disclosure.
  • the communication apparatus 700 may include:
  • the sending unit 71 is configured to send one or more downlink signals to the terminal device;
  • the receiving unit 72 is configured to receive a signal quality of the downlink signal reported by the terminal device, where a signal quality of the reported downlink signal is a sending power of the downlink signal of the downlink signal according to the terminal device. Selected from the difference in signal quality.
  • the communication device provided by the present application corresponds to the method embodiment in FIG. 3 above, and all descriptions of the method embodiments are applicable to the communication device.
  • the terminal device can select the signal quality of the reported downlink signal according to the difference between the transmission power of the downlink signal and the measured signal quality of the downlink signal, so that the communication device can accurately Determine the quality of the beam/channel.
  • the communication device in this application may be a network device or a chip or an integrated circuit installed in the network device.
  • FIG. 9 shows a schematic diagram of the structure of a simplified network device.
  • the network device includes a radio frequency signal transceiving and converting portion and a 92 portion, and the radio frequency signal transceiving and converting portion further includes a receiving unit 91 portion and a transmitting unit 93 portion (also collectively referred to as a transceiving unit).
  • the RF signal transmission and reception and conversion part is mainly used for transmitting and receiving RF signals and converting RF signals and baseband signals; 92 parts are mainly used for baseband processing and control of network equipment.
  • the receiving unit 91 may also be referred to as a receiver, a receiver, a receiving circuit, etc.
  • the transmitting unit 93 may also be referred to as a transmitter, a transmitter, a transmitter, a transmitting circuit, or the like.
  • the portion 92 is typically a control center for a network device, and may be generally referred to as a processing unit for controlling the network device to perform the steps performed by the network device described above with respect to FIG. 2 or FIG. For details, please refer to the description of the relevant part above.
  • the 92 portion may include one or more boards, each of which may include one or more processors and one or more memories for reading and executing programs in the memory to implement baseband processing functions and network devices control. If multiple boards exist, the boards can be interconnected to increase processing power. As an optional implementation manner, multiple boards share one or more processors, or multiple boards share one or more memories, or multiple boards share one or more processes at the same time. Device.
  • the transmitting unit 93 is configured to perform steps S201 and S202 in the embodiment shown in FIG. 2; and the receiving unit 91 is configured to perform step S205 in the embodiment shown in FIG. 2.
  • the transmitting unit 93 is configured to perform step S301 in the embodiment shown in FIG. 3; and the receiving unit 91 is configured to perform step S305 in the embodiment shown in FIG.
  • a communication device is also provided in the embodiment of the present application, and the communication device is configured to execute the foregoing communication method. Some or all of the foregoing communication methods may be implemented by hardware or by software.
  • the communication device includes: a transmitter for transmitting a reference threshold to the terminal device, and And configured to send one or more downlink signals to the terminal device, and a receiver, configured to receive information about candidate beams sent by the terminal device.
  • the communication device includes: a transmitter for transmitting one or more downlink signals to the terminal device, and a receiver for receiving a signal quality of the downlink signal reported by the terminal device.
  • the communication device may be a chip or an integrated circuit when implemented.
  • the communication device when part or all of the communication methods of the foregoing embodiments are implemented by software, the communication device includes: a memory for storing a program; a processor, a program for executing the memory storage, when the program is executed, The communication device can be implemented to implement the communication method provided by the above embodiments.
  • the above memory may be a physically separate unit or may be integrated with the processor.
  • the communication device may also include only the processor.
  • the memory for storing the program is located outside the communication device, and the processor is connected to the memory through the circuit/wire for reading and executing the program stored in the memory.
  • the processor can be a CPU, NP or a combination of CPU and NP.
  • the processor may further include a hardware chip.
  • the above hardware chip may be an ASIC, a PLD, or a combination thereof.
  • the above PLD may be a CPLD, an FPGA, a GAL, or any combination thereof.
  • the memory may include volatile memory, such as RAM; the memory may also include non-volatile memory, such as flash memory, hard disk or solid state hard disk; the memory may also include a combination of the above types of memory.
  • the disclosed systems, methods, and apparatus may be implemented in other ways.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be in an electrical, mechanical or other form.
  • each functional unit in each embodiment of the present application may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the above embodiments it may be implemented in whole or in part by software, hardware, firmware, or any combination thereof.
  • software it may be implemented in whole or in part in the form of a computer program product.
  • the computer program product includes one or more computer instructions.
  • the computer program instructions When the computer program instructions are loaded and executed on a computer, the processes or functions described in accordance with embodiments of the present invention are generated in whole or in part.
  • the computer can be a general purpose computer, a special purpose computer, a computer network, or other programmable device.
  • the computer instructions can be stored in or transmitted by a computer readable storage medium.
  • the computer instructions may be from a website site, computer, server or data center via a wired (eg, coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (eg, infrared, wireless, microwave, etc.) Another website site, computer, server, or data center for transmission.
  • the computer readable storage medium can be any available media that can be accessed by a computer or a data storage device such as a server, data center, or the like that includes one or more available media.
  • the usable medium may be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a digital versatile disc (DVD)), or a semiconductor medium (eg, a solid state disk (SSD)). )Wait.
  • the foregoing storage medium includes: a read-only memory (ROM) or a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program code.

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Abstract

本申请公开了一种确定波束的方法、信号质量测量方法及通信装置。其中的方法包括：接收网络设备发送的参考门限和一个或者多个下行信号；对接收到的所述一个或多个下行信号进行测量，得到所述一个或多个下行信号对应的一个或多个信号质量；根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号对应的功率偏移值的一个或多个差值，确定候选波束；其中，所述功率偏移值是指所述下行信号的发送功率与同步信号/物理广播信道块SS/PBCH的发送功率的比值本申请中，终端设备在根据信号质量的门限选择波束时，考虑了发送下行信号的发送功率，从而使网络设备能够准确地确定候选波束。

Description

确定波束、信号质量测量方法及通信装置
本申请要求于2018年1月12日提交中国国家知识产权局、申请号为201810032642.8、发明名称为“确定波束、信号质量测量方法及通信装置”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及通信技术领域，尤其涉及一种确定波束、信号质量测量方法及通信装置。
背景技术
在某些通信场景下，终端设备需要寻找新的波束。例如，假设物理下行控制信道(physical downlink control channel，PDCCH)的波束失败，需要寻找新的波束来与网络设备进行通信。在寻找新的波束之前，首先确定一个或多个候选波束，再从候选波束中选择一个或多个作为新的波束。目前，亟待提供一种确定波束的方案。
发明内容
本申请提供一种确定波束的方法及通信装置，以实现准确地进行波束的选择。
本申请的一方面，提供了一种确定波束的方法，包括：接收网络设备发送的参考门限和一个或者多个下行信号；对接收到的所述一个或多个下行信号进行测量，得到所述一个或多个下行信号对应的一个或多个信号质量；根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值PC_SS与基准参考信号对应的功率偏移值PC_SS的一个或多个差值，确定候选波束；其中，所述基准参考信号对应的质量门限为所述参考门限，所述功率偏移值PC_SS是指非零功率信道状态信息参考信号NZP CSI-RS的发送功率与同步信号/物理广播信道块SS/PBCH的发送功率的比值，可以为所述非零功率信道状态信息参考信号NZP CSI-RS的发送功率除以同步信号/物理广播信道块SS/PBCH的发送功率，或者同步信号/物理广播信道块SS/PBCH的发送功率除以所述非零功率信道状态信息参考信号NZP-CSI-RS的发送功率。该比值体现两种发送信号的功率偏差，在分贝dB的量化方式下等效为差值。前面所述的功率为非零功率信道状态信息参考信号NZP CSI-RS或同步信号/物理广播信道块SS/PBCH在每个资源单元RE上的功率。在该方面中，终端设备在根据信号质量的门限选择波束时，考虑了发送下行信号的发送功率，从而使网络设备能够准确地确定候选波束。
在一种可能的实现方式中，所述根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值PC_SS与基准参考信号对应的功率偏移值PC_SS的一个或多个差值，确定候选波束，具体包括：
根据参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号的对应的功率偏移值的一个或多个差值，确定一个或多个质量门限，所述一个或多个质量门限分别对应所述一个或多个信号质量；
将所述一个或多个信号质量分别与对应的所述一个或多个质量门限比较，将信号质量大于对应的所述质量门限的下行信号所对应的波束，作为候选波束。在该实现方式中，通过根据参考门限和发送各个下行信号的发送功率，确定各个下行信号对应的质量门限，将各个下行信号与质量门限进行比较，确定候选波束。
在另一种可能的实现方式中，所述根据参考门限以及所述一个或多个下行信号对应的 一个或多个功率偏移值与基准参考信号的对应的功率偏移值的一个或多个差值，确定一个或多个质量门限，包括：确定所述质量门限为所述参考门限与所述一个或多个下行信号对应的功率偏移值与基准参考信号的对应的功率偏移值的差值之和。
在又一种可能的实现方式中，所述根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值PC_SS与基准参考信号对应的功率偏移值PC_SS的一个或多个差值，确定候选波束，具体包括：
根据一个或多个信号质量以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号的对应的功率偏移值的差值，确定更新后的一个或多个信号质量；
将更新后的一个或多个信号质量大于所述参考门限的下行信号所对应的波束，作为候选波束。在该实现方式中，发送各个下行信号的发送功率，调整各个下行信号的信号质量，将调整后的各个下行信号的信号质量与参考门限进行比较，确定候选波束。
在又一种可能的实现方式中，所述根据信号质量以及所述一个或多个下行信号对应的PC_SS与基准参考信号的对应的PC_SS的差值，确定更新后的信号质量，包括：确定更新后的所述信号质量为所述一个或多个下行信号的信号质量、以及所述一个或多个下行信号对应的PC_SS与基准参考信号的对应的PC_SS的差值之和。
在又一种可能的实现方式中，所述基准参考信号为预定义的基准参考信号或与下行控制信道具有准同位关系的参考信号。
在又一种可能的实现方式中，所述方法还包括：接收所述网络设备发送的用于指示基准参考信号的信息、以及用于指示基准参考信号和一个或多个下行信号对应的PC_SS信息。在该实现方式中，通过网络设备配置基准参考信号和PC_SS。
在又一种可能的实现方式中，所述用于指示基准参考信号和一个或多个下行信号对应的PC_SS信息，包括：用于指示下行信号集对应的PC_SS信息、或用于指示下行信号集中一个参考下行信号对应的PC_SS信息，其中，所述下行信号集中的下行信号对应的PC_SS信息为所述参考下行信号对应的PC_SS信息，所述下行信号集包括一个或多个下行信号。在该实现方式中，以下行信号集为单位指示PC_SS信息，可以节省信令开销。
在又一种可能的实现方式中，所述下行信号包括以下至少一种：SS/PBCH和信道状态参考信号CSI-RS。
在又一种可能的实现方式中，所述信号质量包括以下至少一种：参考信号接收功率RSRP、参考信号接收质量RSRQ和信噪比SINR。
在又一种可能的实现方式中，所述方法还包括：在所述候选波束中选择新波束；以及向所述网络设备发送所述新波束的信息。
相应地，提供了一种通信装置，可以实现上述通信方法。例如所述通信装置可以是芯片(如基带芯片，或通信芯片等)或者设备(如终端设备等)。可以通过软件、硬件、或者通过硬件执行相应的软件实现上述方法。
在一种可能的实现方式中，所述通信装置的结构中包括处理器、存储器；所述处理器被配置为支持所述装置执行上述通信方法中相应的功能。存储器用于与处理器耦合，其保存所述装置必要的程序(指令)和/或数据。可选的，所述通信装置还可以包括通信接口用于支持所述装置与其他网元之间的通信。
在另一种可能的实现方式中，所述通信装置，可以包括发送单元、接收单元和处理单元。所述发送单元和接收单元分别用于实现上述方法中的发送和接收功能，所述处理单元用于实现上述方法中的处理功能。例如，接收单元，用于接收网络设备发送的参考门限和一个或者多个下行信号；处理单元，用于对接收到的所述一个或多个下行信号进行测量，得到所述一个或多个下行信号对应的一个或多个信号质量；根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号对应的功率偏移值的一个或多个差值，确定候选波束；其中，所述基准参考信号对应的质量门限为所述参考门限，所述功率偏移值是指所述下行信号的发送功率与同步信号/物理广播信道块SS/PBCH的发送功率的差值。
当所述通信装置为芯片时，接收单元可以是输入单元，比如输入电路或者输入通信接口；发送单元可以是输出单元，比如输出电路或者输出通信接口。当所述通信装置为设备时，接收单元可以是接收器(也可以称为接收机)；发送单元可以是发射器(也可以称为发射机)。
本申请的又一方面，提供了一种确定波束的方法，包括：发送参考门限给终端设备；发送一个或多个下行信号给所述终端设备；以及接收所述终端设备发送的新波束的信息，其中，所述新波束为在候选波束中选择的波束，所述候选波束为所述终端设备根据测量一个或多个下行信号得到的一个或多个信号质量、参考门限以及所述一个或多个下行信号对应的PC_SS与基准参考信号对应的PC_SS的差值确定的波束。在该方面中，终端设备在根据信号质量的门限选择波束时，考虑了发送下行信号的发送功率，从而网络设备能够准确地确定候选波束。
在一种可能的实现方式中，所述方法还包括：发送用于指示基准参考信号的信息、以及用于指示基准参考信号和一个或多个下行信号对应的PC_SS信息给所述终端设备。
相应地，提供了一种通信装置，可以实现上述通信方法。例如所述通信装置可以是芯片(如基带芯片，或通信芯片等)或者设备(如网络设备、基带单板等)。可以通过软件、硬件、或者通过硬件执行相应的软件实现上述方法。
在一种可能的实现方式中，所述通信装置的结构中包括处理器、存储器；所述处理器被配置为支持所述装置执行上述通信方法中相应的功能。存储器用于与处理器耦合，其保存所述装置必要的程序(指令)和数据。可选的，所述通信装置还可以包括通信接口用于支持所述装置与其他网元之间的通信。
在另一种可能的实现方式中，所述通信装置，可以包括接收单元和发送单元。所述接收单元和发送单元分别用于实现上述方法中的接收和发送功能。例如，发送单元，用于发送参考门限给终端设备；所述发送单元，还用于发送一个或多个下行信号给所述终端设备；以及接收单元，用于接收所述终端设备发送的新波束的信息，其中，所述新波束为在候选波束中选择的波束，所述候选波束为所述终端设备根据测量一个或多个下行信号得到的一个或多个信号质量、参考门限以及所述一个或多个下行信号对应的PC_SS与基准参考信号对应的PC_SS的差值确定的波束。
当所述通信装置为芯片时，接收单元可以是输入单元，比如输入电路或者通信接口；发送单元可以是输出单元，比如输出电路或者通信接口。当所述通信装置为设备时，接收 单元可以是接收器(也可以称为接收机)；发送单元可以是发射器(也可以称为发射机)。
本申请的又一方面，提供了一种信号质量测量方法，包括：接收网络设备发送的一个或多个下行信号；对接收到的所述一个或多个下行信号进行测量，得到所述一个或多个下行信号对应的一个或多个信号质量；确定所述一个或多个下行信号中每个下行信号的发送功率与测量得到的所述每个下行信号的信号质量的差值；根据所述每个下行信号的发送功率与信号质量的差值，在所述一个或多个下行信号中选择上报的下行信号的信号质量；以及发送选择的下行信号的信号质量给所述网络设备。在该方面中，终端设备通过根据下行信号的发送功率与测量得到的下行信号的信号质量的差值，选择上报的下行信号的信号质量，可以使网络设备准确地确定波束/信道的好坏。
相应地，提供了一种通信装置，可以实现上述通信方法。例如所述通信装置可以是芯片(如基带芯片，或通信芯片等)或者设备(如终端设备等)。可以通过软件、硬件、或者通过硬件执行相应的软件实现上述方法。
在一种可能的实现方式中，所述通信装置的结构中包括处理器、存储器；所述处理器被配置为支持所述装置执行上述通信方法中相应的功能。存储器用于与处理器耦合，其保存所述装置必要的程序(指令)和/或数据。可选的，所述通信装置还可以包括通信接口用于支持所述装置与其他网元之间的通信。
在另一种可能的实现方式中，所述通信装置，可以包括发送单元、接收单元和处理单元。所述发送单元和接收单元分别用于实现上述方法中的发送和接收功能，所述处理单元用于实现上述方法中的处理功能。例如，接收单元，用于接收网络设备发送的一个或多个下行信号；处理单元，用于对接收到的所述一个或多个下行信号进行测量，得到所述一个或多个下行信号对应的一个或多个信号质量；所述处理单元，还用于确定所述一个或多个下行信号中每个下行信号的发送功率与测量得到的所述每个下行信号的信号质量的差值；所述处理单元，还用于根据所述每个下行信号的发送功率与信号质量的差值，在所述一个或多个下行信号中选择上报的下行信号的信号质量；以及发送单元，用于发送选择的下行信号的信号质量给所述网络设备。
当所述通信装置为芯片时，接收单元可以是输入单元，比如输入电路或者输入通信接口；发送单元可以是输出单元，比如输出电路或者输出通信接口。当所述通信装置为设备时，接收单元可以是接收器(也可以称为接收机)；发送单元可以是发射器(也可以称为发射机)。
本申请的又一方面，提供了一种信号质量测量方法，包括：发送一个或多个下行信号给终端设备；以及接收所述终端设备上报的下行信号的信号质量，其中，所述上报的下行信号的信号质量为所述终端设备根据一个或多个下行信号中每个下行信号的发送功率与信号质量的差值选择的。在该方面中，终端设备通过根据下行信号的发送功率与测量得到的下行信号的信号质量的差值，选择上报的下行信号的信号质量，可以使网络设备准确地确定波束/信道的好坏。
相应地，提供了一种通信装置，可以实现上述通信方法。例如所述通信装置可以是芯片(如基带芯片，或通信芯片等)或者设备(如网络设备、基带单板等)。可以通过软件、硬件、或者通过硬件执行相应的软件实现上述方法。
在一种可能的实现方式中，所述通信装置的结构中包括处理器、存储器；所述处理器被配置为支持所述装置执行上述通信方法中相应的功能。存储器用于与处理器耦合，其保存所述装置必要的程序(指令)和数据。可选的，所述通信装置还可以包括通信接口用于支持所述装置与其他网元之间的通信。
在另一种可能的实现方式中，所述通信装置，可以包括接收单元和发送单元。所述接收单元和发送单元分别用于实现上述方法中的接收和发送功能。例如，发送单元，用于发送一个或多个下行信号给终端设备；以及接收单元，用于接收所述终端设备上报的下行信号的信号质量，其中，所述上报的下行信号的信号质量为所述终端设备根据一个或多个下行信号中每个下行信号的发送功率与信号质量的差值选择的。
当所述通信装置为芯片时，接收单元可以是输入单元，比如输入电路或者通信接口；发送单元可以是输出单元，比如输出电路或者通信接口。当所述通信装置为设备时，接收单元可以是接收器(也可以称为接收机)；发送单元可以是发射器(也可以称为发射机)。
本申请的又一方面，提供了一种计算机可读存储介质，所述计算机可读存储介质中存储有指令，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。
本申请的又一方面，提供了一种包含指令的计算机程序产品，当其在计算机上运行时，使得计算机执行上述各方面所述的方法。
附图说明
为了更清楚地说明本发明实施例或背景技术中的技术方案，下面将对本发明实施例或背景技术中所需要使用的附图进行说明。
图1提供的一种本申请实施例适用的通信系统示意图；
图2为本申请实施例提供的一种波束选择方法的交互流程示意图；
图3为本申请实施例提供的一种信号质量测量方法的交互流程示意图；
图4为本申请实施例提供的一种通信装置的结构示意图；
图5为本申请实施例提供的另一种通信装置的结构示意图；
图6为本申请实施例提供的又一种通信装置的结构示意图；
图7为本申请实施例提供的又一种通信装置的结构示意图；
图8为本申请实施例提供的一种简化的终端设备的结构示意图；
图9为本申请实施例提供的一种简化的网络设备的结构示意图。
具体实施方式
下面结合本发明实施例中的附图对本发明实施例进行描述。
首先介绍几个本申请实施例中可能涉及的概念：
准同位(quasi-co-location，QCL)：准同位关系用于表示多个资源之间具有一个或多个相同或者相类似的通信特征，对于具有同位关系的多个资源，可以采用相同或者类似的通信配置。例如，如果两个天线端口具有同位关系，那么一个端口传送一个符号的信道大尺度特性可以从另一个端口传送一个符号的信道大尺度特性推断出来。大尺度特性可以包括：延迟扩展，平均延迟，多普勒扩展，多普勒频移，平均增益，接收参数，终端设备接收波束编号，发射/接收信道相关性，接收到达角，接收机天线的空间相关性，主到达角(Angel-of-Arrival，AoA)，平均到达角，AoA的扩展等。具体地，所述同位指示用于指示 所述至少两组天线端口是否具有同位关系为：所述同位指示用于指示所述至少两组天线端口发送的信道状态信息参考信号是否来自相同的传输点，或所述同位指示用于指示所述至少两组天线端口发送的信道状态信息参考信号是否来自相同的波束组。
准同位假设(QCL assumption)：是指假设两个端口之间是否具有QCL关系。准同位假设的配置和指示可以用来帮助接收端进行信号的接收和解调。例如接收端能确认A端口和B端口具有QCL关系，即可以将A端口上测得的信号的大尺度参数用于B端口上的信号测量和解调。
波束(beam)：波束是一种通信资源。波束可以是宽波束，或者窄波束，或者其他类型波束。形成波束的技术可以是波束成形技术或者其他技术手段。波束成形技术可以具体为数字波束成形技术，模拟波束成形技术，混合数字/模拟波束成形技术。不同的波束可以认为是不同的资源。通过不同的波束可以发送相同的信息或者不同的信息。可选的，可以将具有相同或者类似的通信特征的多个波束视为是一个波束。一个波束内可以包括一个或多个天线端口，用于传输数据信道，控制信道和探测信号等，例如，发射波束可以是指信号经天线发射出去后在空间不同方向上形成的信号强度的分布，接收波束可以是指从天线上接收到的无线信号在空间不同方向上的信号强度分布。可以理解的是，形成一个波束的一个或多个天线端口也可以看作是一个天线端口集。波束在协议中的体现还是可以空域滤波器(spatial filter)。波束在协议中的体现还可以是天线端口准同位关系(antenna port qcl)，空域接收参数(spatial Rx parameter)。波束在协议中的表示可以是各种信号的编号，例如CSI-RS的编号，SS/PBCH的编号，SRS(sounding reference singal,探测信号)的编号，TRS(tracking reference singal,跟踪信号)的编号等。
空域准同位(spatialQCL)：spatial QCL可以认为是QCL的一种类型。对于spatial有两个角度可以理解：从发送端或者从接收端。从发送端来看，如果说两个天线端口是空域准同位的，那么是指这两个天线端口的对应的波束方向在空间上是一致的。从接收端来看，如果说两个天线端口是空域准同位的，那么是指接收端能够在相同的波束方向上接收到这两个天线端口发送的信号。
图1给出了一种本申请实施例适用的通信系统示意图。该通信系统可以包括至少一个网络设备100(仅示出1个)以及与网络设备100连接的一个或多个终端设备200。
网络设备100可以是任意一种具有无线收发功能的设备。包括但不限于：基站(例如，基站NodeB、演进型基站eNodeB、第五代(the fifth generation，5G)通信系统中的基站、未来通信系统中的基站或网络设备、WiFi系统中的接入节点、无线中继节点、无线回传节点)等。网络设备100还可以是云无线接入网络(cloud radio access network，CRAN)场景下的无线控制器。网络设备100还可以是5G网络中的网络设备或未来演进网络中的网络设备；还可以是可穿戴设备或车载设备等。网络设备100还可以是小站，传输节点(transmission reference point，TRP)等。当然不申请不限于此。
终端设备200是一种具有无线收发功能的设备可以部署在陆地上，包括室内或室外、手持、穿戴或车载；也可以部署在水面上(如轮船等)；还可以部署在空中(例如飞机、气球和卫星上等)。所述终端设备可以是手机(mobile phone)、平板电脑(Pad)、带无线收发功能的电脑、虚拟现实(Virtual Reality，VR)终端设备、增强现实(Augmented Reality， AR)终端设备、工业控制(industrial control)中的无线终端、无人驾驶(self driving)中的无线终端、远程医疗(remote medical)中的无线终端、智能电网(smart grid)中的无线终端、运输安全(transportation safety)中的无线终端、智慧城市(smart city)中的无线终端、智慧家庭(smart home)中的无线终端等等。本申请的实施例对应用场景不做限定。终端设备有时也可以称为用户设备(user equipment，UE)、接入终端设备、UE单元、UE站、移动站、移动台、远方站、远程终端设备、移动设备、UE终端设备、终端(terminal)、终端设备、无线通信设备、UE代理或UE装置等。
需要说明的是，本发明实施例中的术语“系统”和“网络”可被互换使用。“多个”是指两个或两个以上，鉴于此，本发明实施例中也可以将“多个”理解为“至少两个”。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，字符“/”，如无特殊说明，一般表示前后关联对象是一种“或”的关系。
本申请实施例提供一种确定波束的方法及通信装置，终端设备在根据信号质量的门限选择波束时，考虑了发送下行信号的发送功率，从而使网络设备能够准确地确定候选波束。
图2为本申请实施例提供的一种确定波束的方法的交互流程示意图，该方法200可包括以下步骤：
S201、网络设备发送参考门限给终端设备。所述终端设备接收所述网络设备发送的参考门限。
S202、所述网络设备发送一个或多个下行信号给所述终端设备。所述终端设备接收所述网络设备发送的一个或多个下行信号。下行信号可以是信道状态信息参考信号(Channe state information reference signal，CSI-RS)CSI-RS或者同步信号/物理广播信道(Synchronization signal/Physical broadcast channel，SS/PBCH)块。
S203、所述终端设备对接收到的所述一个或多个下行信号进行测量，得到所述一个或多个下行信号对应的一个或多个信号质量。
S204、所述终端设备根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值Pc_SS与基准参考信号对应的功率偏移值Pc_SS的一个或多个差值，确定候选波束。
其中，所述基准参考信号对应的质量门限为所述参考门限，所述功率偏移值Pc_SS是指非零功率信道状态信息参考信号(non-zero power CSI-RS，NZP CSI-RS)的发送功率与同步信号/物理广播信道块的发送功率的比值，可以为所述非零功率信道状态信息参考信号的发送功率除以同步信号/物理广播信道块的发送功率，或者同步信号/物理广播信道块的发送功率除以所述非零功率信道状态信息参考信号的发送功率。该比值体现两种发送信号的功率偏差，在分贝(dB)的量化方式下等效为差值。前面所述的功率为非零功率信道状态信息参考信号或同步信号/物理广播信道块在每个资源单元(resource element，RE)上的功率。
可选地，S205、在所述候选波束中选择新波束。
可选地，S206、所述终端设备向所述网络设备发送所述新波束的信息。所述网络设备接收所述终端设备发送的所述新波束的信息。
其中，所述候选波束为所述终端设备根据测量一个或多个下行信号得到的一个或多个 信号质量、参考门限以及所述一个或多个下行信号对应的PC_SS与基准参考信号对应的PC_SS的差值确定的一个或多个波束，所述新波束为在所述一个或多个候选波束中选择的波束。从所述一个或多个候选波束选择新的波束，方式有多种。例如，将信号质量最好的候选波束作为新的波束，或者将候选波束编号最大的波束作为新的波束，或者，任意选择其中的一个候选波束作为新的波束，本申请不予限定。
本实施例中，候选波束的发现是基于测量得到的下行信号(在这里可以是参考信号)的信号质量的。信号质量包括多种类型，例如参考信号接收功率(reference signal receiving power，RSRP)、参考信号接收质量(reference signal receiving quality，RSRQ)和信噪比(signal-to-noise ratio，SINR)等。
终端设备检测到的波束能否作为候选波束，需要根据网络设备配置的门限来判断。现有技术中，网络设备只为所有的CSI-RS配置了唯一的参考门限。然而，每个CSI-RS的发送功率可能不同，可能导致终端设备接收到的下行信号的信号质量也不同，根据唯一的门限来判断检测到的候选波束的信号质量，使得判断结果不够准确。本实施例中，针对不同的CSI-RS发送功率不同，对应的调整了门限值，用调整后的门限值判断候选波束。
本发明引入了基准参考信号的概念。基准参考信号可以是网络设备选取的任意一个参考信号，也可以是与物理下行控制信道(physical downlink control channel，PDCCH)具有准同位(quasi-co-location，QCL)关系的参考信号。若该基准参考信号为预配置的CSI-RS，则该方法200还包括：接收所述网络设备发送的用于指示基准参考信号的信息，该用于指示基准参考信号的信息包括基准参考信号的标识。比如，网络设备配置CSI-RS#0为基准参考信号，发送该CSI-RS的索引信息至终端设备，索引信息可以是CSI-RS资源编号，比如，CSI-RS resource ID。
进一步地，网络设备还发送SS/PBCH块的发送功率以及用于指示一个或多个CSI-RS对应的功率偏移值PC_SS信息给终端设备。还需说明的是，不同的SS/PBCH块的发送功率是相同的，网络设备可以任选一个SS/PBCH块的发送功率数值发送给终端设备。具体地，可以通过系统消息或RRC信令(例如，在servingcellconfigcommon这个RRC IE中携带)将SS/PBCH块的发送功率发送给终端设备。
终端设备在获取SS/PBCH块的发送功率后，可以根据SS/PBCH块的发送功率以及配置的CSI-RS和SS/PBCH的发送功率的功率偏移值PC_SS确定CSI-RS的发送功率。例如，根据Tx power of CSI-RS resource#x＝SS/PBCHPower+PC_SS#x来确定CSI-RS的发送功率，其中，Tx power of CSI-RS resource#x表示索引号为x的CSI-RS的发送功率，SS/PBCH power表示SS/PBCH块的发送功率，PC_SS#x表示索引号为x的CSI-RS对应的功率偏移值。比如，网络设备发送了2个CSI-RS至终端设备，那么终端设备可以根据SS/PBCHPower加上PC_SS#1来获取第一个CSI-RS的发送功率，根据SS/PBCHPower加上PC_SS#2来获取第二个CSI-RS的发送功率，一般地，不同的CSI-RS对应的PC_SS不同。比如，SS/PBCH块的发送功率为10dB，CSI-RS#1的PC_SS为1dB，CSI-RS#2的PC_SS为2dB，CSI-RS#3的PC_SS为5dB，那么终端设备可以获取CSI-RS#1的发送功率为11dB，CSI-RS#2的发送功率为12dB，CSI-RS#3的发送功率为15dB。
关于PC_SS的配置，作为一种实现方式，具体的，可以配置一个信道状态信息-参考信 号资源集(CSI-RS resource set)，其中包括一个或多个单符号(single-symbol，即只占据一个OFDM符号)的CSI-RS resource用于波束扫描。如果这个resource set被配置为repetition ON，那么终端设备可以假设网络设备在发送这个resource set的每个CSI-RS resource时使用了相同的发送波束；如果被配置为repetition OFF，则终端设备不能进行该假设。
用于指示基准参考信号和一个或多个CSI-RS resource对应的PC_SS信息，可以是：
下行信号集对应的PC_SS信息、或用于指示下行信号集中一个参考下行信号对应的PC_SS信息，其中，所述下行信号集中的下行信号对应的PC_SS信息为所述参考下行信号对应的PC_SS信息，所述下行信号集包括一个或多个CSI-RS resource。
即：在一种实现方式中，每一个CSI-RS resource set都可以被配置一个resource set级别的功率控制参数，例如PC_SS_set#x。如果resource set级的PC_SS_set有效，则它会覆盖该集合内resource的PC_SS参数。也就是说终端设备假设该集合内所有resource的PC_SS＝PC_SS_set。
在另一种实现方式中，用于波束管理的CSI-RS resource set内所有CSI-RS resource的发送功率都与一个参考CSI-RS resource的发送功率相同。其中，参考CSI-RS resource可以是预定义/配置的。参考CSI-RS resource可以是集合内具有最高或者最低编号的resource。在这种实现方式中，终端设备假设该集合内其他resource的PC_SS＝参考resource的PC_SS。
网络设备可以通过一种或多种信令，全部或部分地发送以上参考门限、SS/PBCH块的发送功率、各个CSI-RS与SS/PBCH块的功率偏移值PC_SS等配置信息。例如，网络设备可以通过广播信息、系统消息、RRC信令、MAC-CE信令和DCI信令等一种或者多种，将以上配置信息发送给终端设备。其中，广播信息是通过物理广播信道(physical broadcast channel，PBCH)发送给终端设备的；系统消息、RRC信令和MAC-CE信令是通过物理下行共享信道(physical downlink shared channel，PDSCH)发送给终端设备的；DCI信令是通过物理下行控制信道(physical downlink control channel，PDCCH)发送给终端设备的。终端设备接收该一种或者多种信令，包括接收广播信息，系统消息，RRC信令，MAC-CE信令和DCI信令等。其中，终端设备通过接收并解调PDCCH得到DCI，通过接收并解调PBCH得到广播信息，通过接收并解调PDSCH得到系统消息、RRC信令和MAC-CE信令。
网络设备配置好以上参数后，网络设备发送一个或多个下行信号给终端设备。终端设备接收该一个或多个下行信号。具体地，发送的下行信号携带下行信号的标识，例如，CSI-RS的标识，SS/PBCH块的索引。终端设备根据下行信号的标识了解到这些下行信号是用于候选波束检测的。具体地，网络设备按照S201的相关配置发送下行信号。以网络设备发送CSI-RS为例，例如，网络设备按照CSI-RS resource的相关配置，包括频率和时间资源位置，波束方向，周期和偏移，功率等，将CSI-RS的序列调制成物理信号通过天线发送。
S203中，终端设备接收到下行信号后，对下行信号进行测量。以RSRP的测量为例，如表1所示，终端设备接收到了CSI-RS resource#1～CSI-RS resource#4和SS/PBCH#1共5个下行信号，并分别测量得到这些下行信号的层1-参考信号接收功率(L1-RSRP)#1～L1-RSRP#5。
表1测量得到的信号质量示例
下行信号标识 测量得到的信号质量
CSI-RS resource#1 L1-RSRP#1
CSI-RS resource#2 L1-RSRP#2
CSI-RS resource#3 L1-RSRP#3
CSI-RS resource#4 L1-RSRP#4
SS/PBCH#1 L1-RSRP#5
在获取参考门限以及测量得到信号质量后，终端设备根据所述信号质量、参考门限以及发送功率，确定候选波束。
具体地，在本实施例中，终端设备根据以上测量得到的信号质量、参考门限以及一个或多个下行信号对应的PC_SS与基准参考信号对应的PC_SS的差值，确定候选波束。
作为一种实现方式，对于发送功率不同的CSI-RS，终端设备确定不同的门限值，进行比较。则S204具体包括：
根据参考门限以及所述一个或多个参考信号对应的PC_SS与基准参考信号的对应的PC_SS的差值，确定质量门限；
将信号质量大于所述质量门限的参考信号所对应的波束，作为候选波束。
例如，根据表1中测量得到的下行信号的L1-RSRP，确定各个下行信号对应的质量门限，并最终得到各个下行信号与其质量门限的比较结果如下表2所示：
表2
Figure PCTCN2018122074-appb-000001
在该实现方式中，CSI-RS resource#0作为基准参考信号，当然也可以以其它任一下行 信号作为基准参考信号。网络设备配置的参考门限(在该示例中是门限#0)为该基准参考信号的质量门限。具体地，质量门限为参考门限、以及所述一个或多个参考信号对应的PC_SS与基准参考信号的对应的PC_SS的差值之和。
以CSI-RS resource#1的测量结果的判断为例，根据参考门限调整CSI-RS resource#1对应的质量门限为：门限#1＝门限#0+(CSI-RS resource#1的PC_SS#1-基准CSI-RS resource#0的PC_SS#0)。这里，CSI-RS resource#1的PC_SS#1-基准CSI-RS resource#0的PC_SS#0＝(CSI-RS resource#1的发送功率-SS/PBCH的发送功率)-(基准CSI-RS resource#0的发送功率-SS/PBCH的发送功率)，其中，PC_SS#1、PC_SS#0是由网络设备配置给终端设备。也即在参考门限的基础上考虑下行信号的发送功率的影响。
进一步以以CSI-RS resource#2的测量结果的判断为例，根据参考门限调整CSI-RS resource#2对应的质量门限为：门限#2＝门限#0+(CSI-RS resource#2的PC_SS#2-基准CSI-RS resource#0的PC_SS#0)。这里，CSI-RS resource#2的PC_SS#2-基准CSI-RS resource#0的PC_SS#0＝(CSI-RS resource#2的发送功率-SS/PBCH的发送功率)-(基准CSI-RS resource#0的发送功率-SS/PBCH的发送功率)，其中，PC_SS#2、PC_SS#0是由网络设备配置给终端设备。
进一步以SSB#1的测量结果的判断为例，根据参考门限调整SSB#1对应的质量门限为：门限#5＝门限#0-(基准CSI-RS resource#0的PC_SS#0)＝门限#0-(基准CSI-RS resource#0的发送功率-SSB#1的发送功率)。
根据表2的结果可知，参考信号#1和参考信号#2的信号质量分别大于调整后对应的门限，该两个参考信号对应的波束，可以做为候选波束。参考信号#3～#5由于信号质量分别小于调整后对应的门限，不能作为候选波束。
作为另一种实现方式，对于发送功率不同的CSI-RS,终端设备先根据发送功率进行调整，再和门限值进行比较。则S204具体包括：
根据信号质量以及所述一个或多个参考信号对应的PC_SS与基准参考信号的对应的PC_SS的差值，确定更新后的信号质量；
将更新后的信号质量大于参考门限的下行信号所对应的波束，作为候选波束。
例如，根据表1中测量得到的下行信号的L1-RSRP，对L1-RSRP进行调整以及将调整后的L1-RSRP与参考门限进行比较的结果如下表3所示：
表3
Figure PCTCN2018122074-appb-000002
Figure PCTCN2018122074-appb-000003
在该实现方式中，更新后的信号质量为信号质量、以及所述一个或多个下行信号对应的PC_SS与基准参考信号的对应的PC_SS的差值之和。具体地，终端设备在接收到各个下行信号后，测量得到各个下行信号的信号质量，首先根据各个下行信号的发送功率，对测量得到的信号质量进行调整。
例如，以CSI-RS resource#1为例，调整后的L1-RSRP#1＝L1-RSRP#1+(CSI-RS resource#1的PC_SS#1-基准CSI-RS resource#0的PC_SS#0)，调整后的L1-RSRP#1考虑了CSI-RS resource#1与基准参考信号的发送功率的差值，然后，就可以将调整后的L1-RSRP#1与门限#0(基准参考信号的质量门限)进行比较了。
例如，以CSI-RS resource#2为例，调整后的L1-RSRP#2＝L1-RSRP#2+(CSI-RS resource#2的PC_SS#2-基准CSI-RS resource#0的PC_SS#0)，调整后的L1-RSRP#2考虑了CSI-RS resource#2与基准参考信号的发送功率的差值，然后，就可以将调整后的L1-RSRP#2与门限#0(基准参考信号的质量门限)进行比较。
例如，以SSB#1为例，调整后的L1-RSRP#5＝L1-RSRP#5-基准CSI-RS resource#0的PC_SS#0，调整后的L1-RSRP#5考虑了SSB#1与基准参考信号的发送功率的差值，然后，就可以将调整后的L1-RSRP#5与门限#0(基准参考信号的质量门限)进行比较。
根据表3的结果可知，调整后的参考信号#1和参考信号#2的信号质量分别大于参考门限#0，该两个参考信号对应的波束，可以做为候选波束。调整后的参考信号#3～#5的信号质量分别小于参考门限#0，不能作为候选波束。
在确定候选波束后，终端设备从一个或多个满足条件的候选波束中选择一个作为新波束，并基于新波束向网络设备发送信号。网络设备接收该信号。具体地，终端设备按照网络设备的配置反馈新波束的信息，具体可以是反馈新波束的标识等。
终端设备从一个或多个满足条件的候选波束中选择一个作为新波束的方法取决于终端设备实现。例如，根据信号质量选择一个最好的；或者，根据测得的接收信号质量和发 送功率选择一个最好的。
基于新波束向网络设备发送信号也取决于终端设备实现。例如，在有波束互异性的条件下，终端设备可以用新波束(对于终端设备来说，新波束基于下行信号测量的，所以是接收波束)对应的发送波束向网络设备发送信号；或者，在没有波束互异性的条件下，终端设备可以用扫描的方式通过多个发送波束向网络设备发送信号，此时新波束可以作为一个方向的参考。
终端设备向网络设备发送新波束的信息可以通过物理随机接入信道(physical random access channel，PRACH)、物理上行控制信道(physical uplink control channel，PUCCH)或物理上行共享信道(physical uplink shared channel，PUSCH)等发送。目的是向网络设备说明具体什么波束对于该终端设备是可用的。
以通过PRACH反馈新波束的信息为例，终端设备是通过以下方式反馈的：终端设备物理层判断满足门限的新波束，例如S204步骤中终端设备判断CSI-RS resource#1和CSI-RS resource#2代表的波束满足了门限，可以作为新波束的备选。
终端设备的物理层将符合条件的新波束上报给终端设备的高层(例如MAC层)，终端设备的高层根据CSI-RS resource#1和CSI-RS resource#2选定一个关联的RACH资源，配置给终端设备的物理层。
一种实现方式为，终端设备高层选定关联随机接入信道(random access channel，RACH)资源的方式可以是：先从CSI-RS resource#1和CSI-RS resource#2中选择一个较好的作为新波束，例如，CSI-RS resource#2，再根据CSI-RS resource#2和RACH资源的关联关系选定RACH资源；
另一种实现方式为，终端设备高层也可以将选定的CSI-RS resource#2的编号下发给终端设备的物理层。终端设备的物理层按照这个RACH资源的配置，终端设备发送物理随机接入信道(PRACH)。终端设备使用CSI-RS resource#2的对应的发送波束，发送PRACH。
其中，RACH资源和CSI-RS resource的关联关系是由协议预定义或者由网络设备通过一种或多种信令配置的。
需要说明的是，终端设备的物理层和终端设备高层之间的信息交互属于终端设备协议栈层间交互的内部实现。
通过这种方式，终端设备反馈给网络设备新波束的信息。
根据本申请实施例提供的一种波束选择方法，终端设备在根据信号质量的门限选择波束时，考虑了发送下行信号的发送功率，从而使网络设备能够准确地确定候选波束。
作为另一个实施例，关于CSI-RS的发送功率的确定，协议中也有另外一种不同信号/信道的发送功率偏移值的参数，表示了物理下行共享信道和CSI-RS的功率偏移值。在这种情况下，CSI-RS的发送功率也可以由PDSCH的发送功率以及配置的CSI-RS和PDSCH的发送功率的功率偏移值确定。
作为又一个实施例，解决波束选择时的准确或公平性问题，对于配置为发现新波束的下行信号，可以按照以下方式：应假设网络设备在发送不同的CSI-RS resource时使用了相同的发送功率。相应的，网络设备应该使用相同的发送功率发送不同的CSI-RS resource。 这样，各个CSI-RS resource和SS/PBCH可使用统一的门限进行波束的选择。
作为又一个实施例，网络设备可以只为SS/PBCH块配置门限，而终端设备通过SS/PBCH块和每一个CSI-RS的功率偏移值PC_SS,确定每一个CSI-RS的门限。
作为又一个实施例，网络设备可以为SS/PBCH块和每一个CSI-RS分别配置门限。
作为又一个实施例，在多个小区为一个终端设备服务的时候，网络设备可以为不同小区配置不同门限，也可以是不同载波配置不同门限，为不同带宽部分(bandwidth part，BWP)配置不同门限。
作为又一个实施例，在多个小区为一个终端设备服务的时候，网络设备可以只为一个小区配置一个门限。终端设备根据不同小区SS/PBCH块的发送功率偏移值，确定不同小区的不同门限。也可以是根据不同载波SS/PBCH块的发送功率偏移值，确定不同载波的不同门限，也可以是根据不同BWP对应的SS/PBCH块的发送功率偏移值，确定不同BWP的不同门限。
网络设备发送参考信号给终端设备，终端设备需上报测量得到的参考信号的信号质量给网络设备，以便网络设备确定发送波束。终端设备一般上报信号质量较好的信号质量给网络设备。然而，仅根据信号质量来决定波束/信道的好坏不够准确。
本申请实施例提供一种信号质量测量方法及通信装置，终端设备通过根据下行信号的发送功率与测量得到的下行信号的信号质量的差值，选择上报的下行信号的信号质量，可以使网络设备准确地确定波束/信道的好坏。
图3为本申请实施例提供的一种信号质量测量方法的交互流程示意图，该方法可包括以下步骤：
S301、网络设备发送一个或多个下行信号给终端设备。所述终端设备接收所述网络设备发送的一个或多个下行信号。
S302、所述终端设备对接收到的所述一个或多个下行信号进行测量，得到所述一个或多个下行信号对应的一个或多个信号质量。
S303、所述终端设备确定所述一个或多个下行信号中每个下行信号的发送功率与测量得到的所述每个下行信号的信号质量的差值。
S304、所述终端设备根据所述每个下行信号的发送功率与信号质量的差值，在所述一个或多个下行信号中选择上报的下行信号的信号质量。
S305、所述终端设备发送选择的下行信号的信号质量给所述网络设备。所述网络设备接收所述终端设备上报的下行信号的信号质量，其中，所述上报的下行信号的信号质量为所述终端设备根据一个或多个下行信号中每个下行信号的发送功率与信号质量的差值选择的。
网络设备发送下行信号给终端设备，终端设备对下行信号进行测量并上报测量结果。在测量和上报之前，网络设备需对测量和上报进行配置。
网络设备将SS/PBCH块的发送功率以及各个CSI-RS与SS/PBCH块的发送功率的功率偏移值PC_SS发送给终端设备。终端设备接收网络设备发送的SS/PBCH块的发送功率，以及接收所述网络设备发送的用于指示一个或多个下行信号对应的PC_SS信息。具体地，网络设备通过系统消息、RRC信令(例如，在servingcellconfigcommon这个RRC IE中携 带)等发送SS/PBCH块的发送功率给终端设备。而CSI-RS的发送功率可以由SS/PBCH块的发送功率以及配置的CSI-RS和SS/PBCH的发送功率的功率偏移值PC_SS确定。其中，网络设备给每一个CSI-RS resource(在这里，基准参考信号一般是CSI-RS，因此也包括基准参考信号的PC_SS参数)配置一个PC_SS参数，因此，每一个CSI-RS resource的发送功率可以表示为：Tx power of CSI-RS resource#x＝SS/PBCHPower+PC_SS#x。其中，Tx power of CSI-RS resource#x表示索引号为x的CSI-RS的发送功率，SS/PBCH power表示SS/PBCH块的发送功率，PC_SS#x表示索引号为x的CSI-RS对应的功率偏移值。
进一步地，网络设备还可以配置允许上报的波束数目和信号质量的度量等。
网络设备发送一个或多个下行信号给终端设备。终端设备接收该一个或多个下行信号。具体地，发送的下行信号携带下行信号的标识，例如，CSI-RS的标识，SS/PBCH快的索引。终端设备根据下行信号的标识了解到这些下行信号是用于信号质量测量的。具体地，网络设备发送下行信号。以网络设备发送CSI-RS为例，例如，网络设备按照CSI-RS resource的相关配置，包括频率和时间资源位置，波束方向，周期和偏移，功率等，将CSI-RS的序列调制成物理信号通过天线发送。
S302中，终端设备接收到下行信号后，对下行信号进行测量。以RSRP的测量为例，如表4所示，终端设备接收到了CSI-RS resource#1～CSI-RS resource#4，并分别测量得到这些下行信号的层1-参考信号接收功率(L1-RSRP)#1～L1-RSRP#4。
表4下行信号测量结果示例
Figure PCTCN2018122074-appb-000004
本实施例中，上报信号质量时考虑发送功率减去接收功率，即得到路径损耗和天线增益，从而获得实际波束对的通信链路质量，这样可以使网络设备准确地确定波束/信道的好坏。
如表4所示，终端设备根据表4第三列的处理结果判断波束质量，例如：终端设备根据第三列的处理结果排序如下：
CSI-RS resource#1>CSI-RS resource#3>CSI-RS resource#2>CSI-RS resource#4
如果网络设备配置终端设备只上报一个波束，根据处理结果，终端设备应将CSI-RS resource#1的信息反馈给网络设备。
具体地，终端设备按照网络设备的配置进行反馈，其中包括：上报波束数目和上报量。
例如，当网络设备配置终端设备在一次上报最多只能上报两个波束时，根据S305的处理结果，终端设备可以上报CSI-RS resource#1和CSI-RS resource#3以及它们的信号质量， 信号质量可以采用差分上报的方式，即上报波束1的绝对信号质量，然后上报波束2相对波束1的信号质量的差值。一种上报格式如下表5所示：
表5波束信息和对应的信号质量上报
波束ID 1 波束ID 2 波束1的信号质量 波束2的信号质量
CRI#1 CRI#3 7比特RSRP 4比特的差分RSRP
其中，波束ID可以是CSI-RS resource的绝对编号，也可以是其相对编号。
例如，CSI-RS resource#1的绝对编号，表现为比特可以是000001；CSI-RS resource#3的绝对编号，表现为比特可以是000011。比特长度是由最大CSI-RS resource的数目决定的。
或者，CSI-RS resource#1的相对编号，表现为比特可以是01；CSI-RS resource#3的相对编号，表现为比特可以是11。比特长度是由配置测量的CSI-RS resource的数目决定的(例如只配置了CSI-RS resource#1,#2,#3,#4)。
根据本申请实施例提供的一种信号质量测量方法，终端设备通过根据下行信号的发送功率与测量得到的下行信号的信号质量的差值，选择上报的下行信号的信号质量，可以使网络设备准确地确定波束/信道的好坏。
又一个场景是，SS/PBCH块的发送功率只有一个值，而发送SS/PBCH块的波束可以有多个，每个SS/PBCH块是否需要有不同的发送功率，CSI-RS和SS/PBCH块的功率偏移值到底是指和其中的哪一个SS/PBCH块的功率偏移值，这些是值得考虑的问题。
为解决以上问题，在又一个实施例中，为SS/PBCH块设置多个发送功率，与SS/PBCH块的索引对应。例如，每个SS/PBCH块的索引对应的SS/PBCH resource单独配置发送功率。则CSI-RS与SS/PBCH块的功率偏移值可以根据以下方式确定：
一种实现方式是：终端设备假设CSI-RS与SS/PBCH块的功率偏移值是指CSI-RS与该CSI-RS QCL的SS/PBCH块的发送功率的功率偏移值。
另一种实现方式是:在配置CSI-RS与SS/PBCH块的功率偏移值时显式的指示该功率偏移值是CSI-RS与哪一个SS/PBCH块索引对应的SS/PBCH resource的发送功率的功率偏移值。
又一个场景是，对于CSI-RS的发送功率，当存在多种确定其发送功率的方式时，终端设备可能无法正确确定。例如，当PDSCH与CSI-RS的功率偏移值和SS/PBCH块与CSI-RS的功率偏移值同时配置时，可能存在含混之处。
当SS/PBCH块与CSI-RS的功率偏移值PC_SS被配置时，有以下关系：
CSI-RS的发送功率＝SS/PBCH块的发送功率+PC_SS
当PDSCH与CSI-RS的功率偏移值PC_SS被配置时，有以下关系：
CSI-RS的发送功率＝PDSCH的发送功率+PC_SS
当上述两个关系同时存在时，CSI-RS的发送功率可能会出现含混。
一种实施例为，为多种可能的发送功率确定方法设置优先级。例如：终端设备认为当SS/PBCH块与CSI-RS的功率偏移值被配置时，优先使用SS/PBCH块与CSI-RS的功率偏移值和SS/PBCH块的发送功率来确定CSI-RS的发送功率。
如果有更多功率偏移值被引入，那么依照本实施例的方法，可以通过定义优先级的方法来唯一确定CSI-RS的发送功率。
又一个场景是，SS/PBCH块的发送功率这个参数在多个消息(例如SIB1和serving cellconfigcommon)里都有携带，如果出现不同应如何解决。
一种实施例为：为多种可能的发送功率的值设置优先级。例如：终端设备认为SIB1携带的SS/PBCH块的发送功率值是优先的；或者，终端设备认为serving cellconfigcommon中携带的SS/PBCH块的发送功率值是优先的，可以更新SIB1的配置。
上述详细阐述了本发明实施例的方法，下面对本发明实施例的装置进行描述。
图4为本申请实施例提供的一种通信装置的结构示意图，该通信装置400可包括：
接收单元41，用于接收网络设备发送的参考门限和一个或者多个下行信号；
处理单元42，用于对接收到的所述一个或多个下行信号进行测量，得到所述一个或多个下行信号对应的一个或多个信号质量；根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号对应的功率偏移值的一个或多个差值，确定候选波束；
其中，所述基准参考信号对应的质量门限为所述参考门限，所述功率偏移值是指所述下行信号的发送功率与同步信号/物理广播信道块SS/PBCH块的发送功率的差值。
在一种实现方式中，所述处理单元42用于：根据参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号的对应的功率偏移值的一个或多个差值，确定一个或多个质量门限，所述一个或多个质量门限分别对应所述一个或多个信号质量；将所述一个或多个信号质量分别与对应的所述一个或多个质量门限比较，将信号质量大于对应的所述质量门限的下行信号所对应的波束，作为候选波束。
在另一种实现方式中，所述处理单元42用于：确定所述质量门限为所述参考门限与所述一个或多个下行信号对应的功率偏移值与基准参考信号的对应的功率偏移值的差值之和。
在又一种实现方式中，所述处理单元42用于：根据一个或多个信号质量以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号的对应的功率偏移值的差值，确定更新后的一个或多个信号质量；将更新后的一个或多个信号质量大于所述参考门限的下行信号所对应的波束，作为候选波束。
在又一种实现方式中，所述处理单元42具体用于：确定所述更新后的一个或多个信号质量分别为所述一个或多个下行信号的信号质量与所述一个或多个下行信号对应的功率偏移值与基准参考信号的对应的功率偏移值的差值之和。
在又一种实现方式中，所述基准参考信号为预定义的基准参考信号或与下行控制信道具有准同位关系的参考信号。
在又一种实现方式中，所述接收单元41，还用于接收所述网络设备发送的用于指示基准参考信号的信息、以及用于指示基准参考信号和一个或多个下行信号对应的PC_SS信息。
在又一种实现方式中，所述用于指示基准参考信号和一个或多个下行信号对应的PC_SS信息，包括：用于指示下行信号集对应的PC_SS信息、或用于指示下行信号集中一个参考下行信号对应的PC_SS信息，其中，所述下行信号集中的下行信号对应的PC_SS 信息为所述参考下行信号对应的PC_SS信息，所述下行信号集包括一个或多个下行信号。
在又一种实现方式中，所述下行信号包括以下至少一种：SS/PBCH块和信道状态参考信号CSI-RS。
在又一种实现方式中，所述信号质量包括以下至少一种：参考信号接收功率RSRP、参考信号接收质量RSRQ和信噪比SINR。
在又一种实现方式中，处理单元42，还用于在所述候选波束中选择新波束。所述装置还包括发送单元43，用于向所述网络设备发送所述新波束的信息。
本申请提供的通信装置是对应上述图2中的方法实施例的，对于方法实施例的所有描述都适用于该通信装置。根据本申请实施例提供的一种通信装置，该通信装置在根据信号质量的门限选择波束时，考虑了发送下行信号的发送功率，从而使网络设备能够准确地选择候选波束。
图6为本申请实施例提供的又一种通信装置的结构示意图，该通信装置600可包括：
接收单元61，用于接收网络设备发送的一个或多个下行信号；
处理单元62，用于对接收到的所述一个或多个下行信号进行测量，得到所述一个或多个下行信号对应的一个或多个信号质量；
所述处理单元62，还用于：确定所述一个或多个下行信号中每个下行信号的发送功率与测量得到的所述每个下行信号的信号质量的差值；根据所述每个下行信号的发送功率与信号质量的差值，在所述一个或多个下行信号中选择上报的下行信号的信号质量；
发送单元63，用于发送选择的下行信号的信号质量给所述网络设备。
本申请提供的通信装置是对应上述图3中的方法实施例的，对于方法实施例的所有描述都适用于该通信装置。根据本申请实施例提供的一种通信装置，该通信装置通过根据下行信号的发送功率与测量得到的下行信号的信号质量的差值，选择上报的下行信号的信号质量，可以使网络设备准确地确定波束/信道的好坏。
本申请中图4和图6所述的通信装置可以是终端设备，也可以是安装于终端设备中的芯片或集成电路。
以通信装置为终端设备为例，图8示出了一种简化的终端设备的结构示意图。便于理解和图示方便，图8中，终端设备以手机作为例子。如图8所示，终端设备包括处理器、存储器、射频电路、天线以及输入输出装置。处理器主要用于对通信协议以及通信数据进行处理，以及对终端设备进行控制，执行软件程序，处理软件程序的数据等。存储器主要用于存储软件程序和数据。射频电路主要用于基带信号与射频信号的转换以及对射频信号的处理。天线主要用于收发电磁波形式的射频信号。输入输出装置，例如触摸屏、显示屏，键盘等主要用于接收用户输入的数据以及对用户输出数据。需要说明的是，有些种类的终端设备可以不具有输入输出装置。
当需要发送数据时，处理器对待发送的数据进行基带处理后，输出基带信号至射频电路，射频电路将基带信号进行射频处理后将射频信号通过天线以电磁波的形式向外发送。当有数据发送到终端设备时，射频电路通过天线接收到射频信号，将射频信号转换为基带信号，并将基带信号输出至处理器，处理器将基带信号转换为数据并对该数据进行处理。为便于说明，图8中仅示出了一个存储器和处理器。在实际的终端设备产品中，可以存在 一个或多个处理器和一个或多个存储器。存储器也可以称为存储介质或者存储设备等。存储器可以是独立于处理器设置，也可以是与处理器集成在一起，本申请实施例对此不做限制。
在本申请实施例中，可以将具有收发功能的天线和射频电路视为终端设备的接收单元和发送单元(也可以统称为收发单元)，将具有处理功能的处理器视为终端设备的处理单元。如图8所示，终端设备包括接收单元81、处理单元82和发送单元83。接收单元81也可以称为接收器、接收机、接收电路等，发送单元83也可以称为发送器、发射器、发射机、发射电路等。处理单元也可以称为处理器，处理单板，处理模块、处理装置等。
例如，在一个实施例中，接收单元81用于执行图2所示实施例中的步骤S201和S202；处理单元82用于执行图2所示实施例中的步骤S203和S204；以及发送单元83用于执行图2所示实施例中的步骤S205。
例如，在另一个实施例中，接收单元81用于执行图3所示实施例中的步骤S301；处理单元82用于执行图3所示实施例中的步骤S302～S304；以及发送单元83用于执行图3所示实施例中的步骤S305。
本申请实施例中还提供一种通信装置，该通信装置用于执行上述通信方法。上述通信方法中的部分或全部可以通过硬件来实现也可以通过软件来实现，当通过硬件实现时，在一个实施例中，通信装置包括：接收器，用于接收网络设备发送的参考门限，还用于接收所述网络设备发送的一个或多个下行信号；处理电路，用于执行上述通信方法，例如用于对接收到的所述一个或多个下行信号进行测量，得到所述一个或多个下行信号对应的一个或多个信号质量，以及还用于根据所述信号质量、参考门限以及所述一个或多个下行信号对应的PC_SS与基准参考信号对应的PC_SS的差值，确定候选波束；发送器，用于向所述网络设备发送所述候选波束的信息。在另一个实施例中，通信装置包括：接收器，用于接收网络设备发送的一个或多个下行信号；处理电路，用于执行上述通信方法，例如用于对接收到的所述一个或多个下行信号进行测量，得到所述一个或多个下行信号对应的一个或多个信号质量，以及还用于确定所述一个或多个下行信号中每个下行信号的发送功率与测量得到的所述每个下行信号的信号质量的差值，以及还用于根据所述每个下行信号的发送功率与信号质量的差值，在所述一个或多个下行信号中选择上报的下行信号的信号质量；发送器，用于发送选择的下行信号的信号质量给所述网络设备。
可选的，通信装置在具体实现时可以是芯片或者集成电路。
可选的，当上述实施例的通信方法中的部分或全部通过软件来实现时，通信装置包括：存储器，用于存储程序；处理器，用于执行存储器存储的程序，当程序被执行时，使得通信装置可以实现上述实施例提供的通信方法。
可选的，上述存储器可以是物理上独立的单元，也可以与处理器集成在一起。
可选的，当上述实施例的通信方法中的部分或全部通过软件实现时，通信装置也可以只包括处理器。用于存储程序的存储器位于通信装置之外，处理器通过电路/电线与存储器连接，用于读取并执行存储器中存储的程序。
处理器可以是中央处理器(central processing unit，CPU)，网络处理器(network processor，NP)或者CPU和NP的组合。
处理器还可以进一步包括硬件芯片。上述硬件芯片可以是专用集成电路(application-specific integrated circuit，ASIC)，可编程逻辑器件(programmable logic device，PLD)或其组合。上述PLD可以是复杂可编程逻辑器件(complex programmable logic device，CPLD)，现场可编程逻辑门阵列(field-programmable gate array，FPGA)，通用阵列逻辑(generic array logic,GAL)或其任意组合。
存储器可以包括易失性存储器(volatile memory)，例如随机存取存储器(random-access memory，RAM)；存储器也可以包括非易失性存储器(non-volatile memory)，例如快闪存储器(flash memory)，硬盘(hard disk drive，HDD)或固态硬盘(solid-state drive，SSD)；存储器还可以包括上述种类的存储器的组合。
图5为本申请实施例提供的另一种通信装置的结构示意图，该通信装置500包括：
发送单元51，用于发送参考门限以及一个或多个下行信号至终端设备。
接收单元52，用于接收所述终端设备发送的新波束的信息，其中，所述新波束为在候选波束中选择的波束，所述候选波束为所述终端设备根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号对应的功率偏移值的一个或多个差值确定的波束；
其中，所述基准参考信号对应的质量门限为所述参考门限，所述功率偏移值是指所述下行信号的发送功率与同步信号/物理广播信道块SS/PBCH的发送功率的差值。
在一种实现方式中，所述发送单元51，还用于发送用于指示基准参考信号的信息、以及用于指示基准参考信号和一个或多个下行信号对应的PC_SS信息给所述终端设备。
本申请提供的通信装置是对应上述图2中的方法实施例的，对于方法实施例的所有描述都适用于该通信装置。根据本申请实施例提供的一种通信装置，终端设备在根据信号质量的门限选择波束时，考虑了发送下行信号的发送功率，从而该通信装置能够准确地选择候选波束。
图7为本申请实施例提供的又一种通信装置的结构示意图，该通信装置700可包括：
发送单元71，用于发送一个或多个下行信号给终端设备；
接收单元72，用于接收所述终端设备上报的下行信号的信号质量，其中，所述上报的下行信号的信号质量为所述终端设备根据一个或多个下行信号中每个下行信号的发送功率与信号质量的差值选择的。
本申请提供的通信装置是对应上述图3中的方法实施例的，对于方法实施例的所有描述都适用于该通信装置。根据本申请实施例提供的一种通信装置，终端设备通过根据下行信号的发送功率与测量得到的下行信号的信号质量的差值，选择上报的下行信号的信号质量，可以使该通信装置准确地确定波束/信道的好坏。
本申请中的通信装置可以是网络设备，也可以是安装于网络设备中的芯片或集成电路。
以通信装置为网络设备为例。图9示出了一种简化的网络设备的结构示意图。网络设备包括射频信号收发及转换部分以及92部分，该射频信号收发及转换部分又包括接收单元91部分和发送单元93部分(也可以统称为收发单元)。射频信号收发及转换部分主要用于射频信号的收发以及射频信号与基带信号的转换；92部分主要用于基带处理，对网络设备进行控制等。接收单元91也可以称为接收器、接收机、接收电路等，发送单元93也可以 称为发送器、发射器、发射机、发射电路等。92部分通常是网络设备的控制中心，通常可以称为处理单元，用于控制网络设备执行上述图2或图3中关于网络设备所执行的步骤。具体可参见上述相关部分的描述。
92部分可以包括一个或多个单板，每个单板可以包括一个或多个处理器和一个或多个存储器，处理器用于读取和执行存储器中的程序以实现基带处理功能以及对网络设备的控制。若存在多个单板，各个单板之间可以互联以增加处理能力。作为一中可选的实施方式，也可以是多个单板共用一个或多个处理器，或者是多个单板共用一个或多个存储器，或者是多个单板同时共用一个或多个处理器。
例如，在一个实施例中，发送单元93用于执行图2所示实施例中的步骤S201和S202；以及接收单元91用于执行图2所示实施例中的步骤S205。
例如，在另一个实施例中，发送单元93用于执行图3所示实施例中的步骤S301；以及接收单元91用于执行图3所示实施例中的步骤S305。
本申请实施例中还提供一种通信装置，该通信装置用于执行上述通信方法。上述通信方法中的部分或全部可以通过硬件来实现也可以通过软件来实现，当通过硬件实现时，在一个实施例中，通信装置包括：发送器，用于发送参考门限给终端设备，以及还用于发送一个或多个下行信号给所述终端设备；接收器，用于用于接收所述终端设备发送的候选波束的信息。在另一个实施例中，通信装置包括：发送器，用于发送一个或多个下行信号给终端设备；接收器，用于接收所述终端设备上报的下行信号的信号质量。
可选的，通信装置在具体实现时可以是芯片或者集成电路。
可选的，当上述实施例的通信方法中的部分或全部通过软件来实现时，通信装置包括：存储器，用于存储程序；处理器，用于执行存储器存储的程序，当程序被执行时，使得通信装置可以实现上述实施例提供的通信方法。
可选的，上述存储器可以是物理上独立的单元，也可以与处理器集成在一起。
可选的，当上述实施例的通信方法中的部分或全部通过软件实现时，通信装置也可以只包括处理器。用于存储程序的存储器位于通信装置之外，处理器通过电路/电线与存储器连接，用于读取并执行存储器中存储的程序。
处理器可以是CPU，NP或者CPU和NP的组合。
处理器还可以进一步包括硬件芯片。上述硬件芯片可以是ASIC，PLD或其组合。上述PLD可以是CPLD，FPGA，GAL或其任意组合。
存储器可以包括易失性存储器，例如RAM；存储器也可以包括非易失性存储器，例如快闪存储器，硬盘或固态硬盘；存储器还可以包括上述种类的存储器的组合。
本领域普通技术人员可以意识到，结合本文中所公开的实施例描述的各示例的单元及算法步骤，能够以电子硬件、或者计算机软件和电子硬件的结合来实现。这些功能究竟以硬件还是软件方式来执行，取决于技术方案的特定应用和设计约束条件。专业技术人员可以对每个特定的应用来使用不同方法来实现所描述的功能，但是这种实现不应认为超出本申请的范围。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统、装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本申请所提供的几个实施例中，应该理解到，所揭露的系统、方法和装置，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，所述单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。另外，在本申请各个实施例中的各功能单元可以集成在一个处理单元中，也可以是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。
在上述实施例中，可以全部或部分地通过软件、硬件、固件或者其任意组合来实现。当使用软件实现时，可以全部或部分地以计算机程序产品的形式实现。所述计算机程序产品包括一个或多个计算机指令。在计算机上加载和执行所述计算机程序指令时，全部或部分地产生按照本发明实施例所述的流程或功能。所述计算机可以是通用计算机、专用计算机、计算机网络、或者其他可编程装置。所述计算机指令可以存储在计算机可读存储介质中，或者通过所述计算机可读存储介质进行传输。所述计算机指令可以从一个网站站点、计算机、服务器或数据中心通过有线(例如同轴电缆、光纤、数字用户线(digital subscriber line，DSL))或无线(例如红外、无线、微波等)方式向另一个网站站点、计算机、服务器或数据中心进行传输。所述计算机可读存储介质可以是计算机能够存取的任何可用介质或者是包含一个或多个可用介质集成的服务器、数据中心等数据存储设备。所述可用介质可以是磁性介质，(例如，软盘、硬盘、磁带)、光介质(例如，数字通用光盘(digital versatile disc，DVD))、或者半导体介质(例如固态硬盘(solid state disk，SSD))等。
本领域普通技术人员可以理解实现上述实施例方法中的全部或部分流程，该流程可以由计算机程序来指令相关的硬件完成，该程序可存储于计算机可读取存储介质中，该程序在执行时，可包括如上述各方法实施例的流程。而前述的存储介质包括：只读存储器(read-only memory，ROM)或随机存储存储器(random access memory，RAM)、磁碟或者光盘等各种可存储程序代码的介质。

Claims (24)

  1. 一种通信装置，其特征在于，包括：
    接收单元，用于接收网络设备发送的参考门限和一个或者多个下行信号；
    处理单元，用于对接收到的所述一个或多个下行信号进行测量，得到所述一个或多个下行信号对应的一个或多个信号质量；
    根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号对应的功率偏移值的一个或多个差值，确定候选波束；
    其中，所述基准参考信号对应的质量门限为所述参考门限，所述功率偏移值是指所述下行信号的发送功率与同步信号/物理广播信道块SS/PBCH的发送功率的比值。
  2. 如权利要求1所述的装置，其特征在于，所述处理单元用于：
    根据参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号的对应的功率偏移值的一个或多个差值，确定一个或多个质量门限，所述一个或多个质量门限分别对应所述一个或多个信号质量；
    将所述一个或多个信号质量分别与对应的所述一个或多个质量门限比较，将信号质量大于对应的所述质量门限的下行信号所对应的波束，作为候选波束。
  3. 如权利要求2所述的装置，其特征在于，所述处理单元用于：
    确定所述质量门限为所述参考门限与所述一个或多个下行信号对应的功率偏移值与基准参考信号的对应的功率偏移值的差值之和。
  4. 如权利要求1所述的装置，其特征在于，所述处理单元用于：
    根据一个或多个信号质量以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号的对应的功率偏移值的差值，确定更新后的一个或多个信号质量；
    将更新后的一个或多个信号质量大于所述参考门限的下行信号所对应的波束，作为候选波束。
  5. 如权利要求4所述的装置，其特征在于，所述处理单元用于：
    确定所述更新后的一个或多个信号质量分别为所述一个或多个下行信号的信号质量与所述一个或多个下行信号对应的功率偏移值与基准参考信号的对应的功率偏移值的差值之和。
  6. 如权利要求1～5任一项所述的装置，其特征在于，所述基准参考信号为预定义的基准参考信号或与下行控制信道PDCCH具有准同位关系QCL的参考信号。
  7. 如权利要求1～5任一项所述的装置，其特征在于：
    所述接收单元，还用于接收所述网络设备发送的用于指示基准参考信号的信息、以及用于指示基准参考信号和一个或多个下行信号对应的功率偏移值信息。
  8. 如权利要求1～7任一项所述的装置，其特征在于，所述下行信号为信道状态参考信号CSI-RS或者同步信号/广播信道SS/PBCH块。
  9. 如权利要求1～8任一项所述的装置，其特征在于，所述信号质量包括以下至少一种：参考信号接收功率RSRP、参考信号接收质量RSRQ和信噪比SINR。
  10. 如权利要求1～9任一项所述的装置，其特征在于，所述处理单元，还用于在所述候选波束中选择新波束；
    所述装置还包括发送单元，用于向所述网络设备发送所述新波束的信息。
  11. 一种通信装置，其特征在于，包括：
    发送单元，用于发送参考门限以及一个或多个下行信号至终端设备；
    接收单元，用于接收所述终端设备发送的新波束的信息，其中，所述新波束为在候选波束中选择的波束，所述候选波束为所述终端设备根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号对应的功率偏移值的一个或多个差值确定的波束；
    其中，所述基准参考信号对应的质量门限为所述参考门限，所述功率偏移值是指所述下行信号的发送功率与同步信号/物理广播信道块SS/PBCH的发送功率的比值。
  12. 如权利要求11所述的装置，其特征在于：
    所述发送单元，还用于发送用于指示基准参考信号的信息、以及用于指示基准参考信号和一个或多个下行信号对应的功率偏移值信息给所述终端设备。
  13. 一种确定波束的方法，其特征在于，包括：
    接收网络设备发送的参考门限以及一个或多个下行信号；
    对接收到的所述一个或多个下行信号进行测量，得到所述一个或多个下行信号对应的一个或多个信号质量；
    根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号对应的功率偏移值的一个或多个差值，确定候选波束；
    其中，所述基准参考信号对应的质量门限为所述参考门限，所述功率偏移值是指所述下行信号的发送功率与同步信号/物理广播信道块SS/PBCH的发送功率的比值。
  14. 如权利要求13所述的方法，其特征在于，所述根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号对应的功率偏移值的一个或多个差值，确定候选波束，具体包括：
    根据参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号的对应的功率偏移值的一个或多个差值，确定一个或多个质量门限，所述一个或多个质量门限分别对应所述一个或多个信号质量；
    将所述一个或多个信号质量分别与对应的所述一个或多个质量门限比较，将信号质量大于对应的所述质量门限的下行信号所对应的波束，作为候选波束。
  15. 如权利要求14所述的方法，其特征在于，所述根据参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号的对应的功率偏移值的一个或多个差值，确定一个或多个质量门限，包括：
    所述质量门限为所述参考门限与所述一个或多个下行信号对应的功率偏移值与基准参考信号的对应的功率偏移值的差值之和。
  16. 如权利要求15所述的方法，其特征在于，所述根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号对应的功率偏移值的一个或多个差值，确定候选波束，具体包括：
    根据一个或多个信号质量以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号的对应的功率偏移值的差值，确定更新后的一个或多个信号质量；
    将更新后的一个或多个信号质量大于所述参考门限的下行信号所对应的波束，作为候选波束。
  17. 如权利要求16所述的方法，其特征在于，根据一个或多个信号质量以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号的对应的功率偏移值的差值，确定更新后的一个或多个信号质量；
    所述更新后的一个或多个信号质量分别为所述一个或多个下行信号的信号质量与所述一个或多个下行信号对应的功率偏移值与基准参考信号的对应的功率偏移值的差值之和。
  18. 如权利要求13～17任一项所述的方法，其特征在于，所述基准参考信号为预定义的基准参考信号或与下行控制信道具有准同位关系的参考信号。
  19. 如权利要求13～17任一项所述的方法，其特征在于，所述方法还包括：
    接收所述网络设备发送的用于指示基准参考信号的信息、以及用于指示基准参考信号和一个或多个下行信号对应的功率偏移值信息。
  20. 如权利要求13～19任一项所述的方法，其特征在于，所述下行信号为信道状态参考信号CSI-RS或者同步信号/广播信道SS/PBCH块。
  21. 如权利要求13～20任一项所述的方法，其特征在于，所述信号质量包括以下至少一种：参考信号接收功率RSRP、参考信号接收质量RSRQ和信噪比SINR。
  22. 如权利要求13～21任一项所述的方法，其特征在于，所述方法还包括：
    在所述候选波束中选择新波束；
    向所述网络设备发送所述新波束的信息。
  23. 一种确定波束的方法，其特征在于，包括：
    发送参考门限以及一个或多个下行信号至终端设备；
    接收所述终端设备发送的新波束的信息，其中，所述新波束为在候选波束中选择的波束，所述候选波束为所述终端设备根据所述一个或多个信号质量、所述参考门限以及所述一个或多个下行信号对应的一个或多个功率偏移值与基准参考信号对应的功率偏移值的一个或多个差值确定的波束；
    其中，所述基准参考信号对应的质量门限为所述参考门限，所述功率偏移值是指所述下行信号的发送功率与同步信号/物理广播信道块SS/PBCH的发送功率的比值。
  24. 如权利要求23所述的方法，其特征在于，所述方法还包括：
    发送用于指示基准参考信号的信息、以及用于指示基准参考信号和一个或多个下行信号对应的功率偏移值信息至所述终端设备。
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