WO2019137346A1

WO2019137346A1 - Method and terminal device for monitoring channel quality

Info

Publication number: WO2019137346A1
Application number: PCT/CN2019/070756
Authority: WO
Inventors: 施弘哲; 蒋鹏; 毕晓艳
Original assignee: 华为技术有限公司
Priority date: 2018-01-12
Filing date: 2019-01-08
Publication date: 2019-07-18
Also published as: CN110034832A; CN110034832B

Abstract

The present application provides a method and a terminal device for monitoring channel quality. The method comprises: when a terminal device is in initial access, the terminal device receiving a plurality of synchronized signal blocks transmitted by a network device by means of a plurality of channels; if the terminal device does not receive first signaling and second signaling for monitoring of channel quality, the terminal device determining M synchronized signal blocks from among the synchronized signal blocks received during the initial access, so as to perform quality monitoring on M channels in one-to-one correspondences with the M synchronized signal blocks, wherein the first signaling comprises at least one periodically transmitted CSI-RS resource for monitoring channel quality, the second signaling comprises at least one quasi-co-location (QCL) information index associated with a control channel demodulation reference signal, the QCL information index is used to determine a reference signal, and the reference signal is used to monitor channel quality. In the method for monitoring channel quality provided by embodiments of the present application, if a terminal device does not receive signaling transmitted by a network device the terminal device can determine a reference signal so as to implement channel quality monitoring.

Description

Method and terminal device for monitoring channel quality

The present application claims priority to Chinese Patent Application No. 201810032507.3 filed on Jan. 12, 2018, the entire disclosure of which is hereby incorporated by in.

Technical field

The present application relates to the field of communications, and more particularly to a method and terminal device for monitoring channel quality.

Background technique

New Radio (NR) supports high-frequency transmission, which greatly expands the available frequency resources, but the path loss at high frequencies is much more serious than the low frequency. Therefore, it is necessary to increase the array gain by beamforming technology to ensure the cell. Coverage. In this case, the robustness (Robust) of the beam access based communication system needs to be tested, for example, the transceiving beam pairing between the network device and the terminal device is mismatched due to the movement or rotation of the terminal device. In this case, if the recovery cannot be performed quickly, the transmission of the communication system may be greatly affected or even disconnected, and then the upper layer needs to be requested to resume the connection.

In the process of recovering the transmit and receive beam pairing, including Beam Failure Detection (BFD), the beam mismatch detection can be determined by channel quality monitoring, and the channel quality monitoring is implemented by measuring one or more reference signals. The existing terminal device determines the reference signal based on the signaling sent by the network device. When the network device does not configure the corresponding signaling, the terminal device cannot determine the reference signal, and thus cannot restore the channel quality, so how to receive the network in the terminal device Monitoring the channel quality when signaling by the device becomes an urgent problem to be solved.

Summary of the invention

The present application provides a method and a terminal device for monitoring channel quality, and the terminal device can determine that the reference signal completes channel quality monitoring when the signaling sent by the network device is not received.

The first aspect provides a method for monitoring channel quality, including: receiving, by a terminal device, a plurality of synchronization signal blocks sent by a network device by using multiple channels during initial access; the terminal device does not receive the network device. And transmitting, by the first signaling and the second signaling, for monitoring channel quality, determining M synchronization signal blocks from the plurality of synchronization signal blocks received in the initial access process, to synchronize with the M synchronization signals The M channels corresponding to the signal blocks are subjected to quality monitoring; M is an integer greater than or equal to 1; wherein the first signaling carries a channel state information reference signal (CSI-) that is transmitted by at least one period. An index of the RS) resource used to monitor channel quality;

The second signaling includes at least one quasi-collocation (QCL) information index associated with a control channel demodulation reference signal, the QCL information index being used to determine a reference signal, the reference signal being used for monitoring a channel quality.

The terminal device receives, by using N channels, a plurality of synchronization signal blocks sent by the network device, where each synchronization signal block corresponds to one channel, and each synchronization signal block is carried on the corresponding channel, where N is greater than or An integer equal to 1; after the initial access is completed, when the terminal device does not receive the first signaling and the second signaling sent by the network device, according to the M synchronization signals in the multiple synchronization signal blocks a block that monitors a quality of a channel corresponding to each of the M synchronization signal blocks, where M is an integer greater than or equal to one.

According to the method for monitoring channel quality according to the embodiment of the present application, when the network device is not configured with the first signaling and the second signaling, the terminal device can detect at least one synchronization signal block (Synchronous signal & PBCH block) that is initially monitored when the network device is accessed. , SS/PBCH BLOCK) is used as a reference signal for monitoring channel quality (also referred to herein as a reference signal), monitoring the quality of the channel corresponding to each SS/PBCH BLOCK. That is, the method for monitoring channel quality of the present application can determine the reference signal according to the synchronization signal block received during the initial access when the terminal device does not receive the first signaling and the second signaling, and complete the monitoring channel quality. When the channel quality does not meet the preset requirements, recovery is required in time to ensure the transmission quality of the communication system.

The reference signal described in the present application is used for monitoring channel quality. In the NR, in order to support the high-frequency communication, the quality of the beam-based channel is introduced, and when the beams of the corresponding channel are accurately paired, the quality of the normal channel is located. The quality of the channel may be degraded when the beam pair of the corresponding channel is mismatched. That is to say, when the channel is monitored in the present application, the obtained channel quality result may reflect the terminal device corresponding to the channel and The quality of the beam pair between the network devices may correspond to the reference signal described in the present application to the BFD reference signal in the existing protocol.

With reference to the first aspect, in an implementation manner of the first aspect, determining, in the M synchronization signal blocks from the plurality of synchronization signal blocks, determining the value of the M includes:

Optionally, the value of the M is determined according to the capability of the terminal device, that is, different terminal devices determine the M-worth size according to their own capabilities, and can determine different Ms for different terminal devices, and support the diversity of the terminal device;

Optionally, the value of the M is specified by the communication protocol, that is, the communication system uniformly defines the M value, and the signaling overhead is reduced;

Optionally, the value of the M is indicated by the network device, that is, the network device may indicate different M values according to different communication states, thereby increasing processing flexibility.

With reference to the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, when the value of the M is 1, the method further includes: the terminal device selects the random access in the initial access The associated channel and the transmitted synchronization signal block of the access channel (RACH/random access channel) are used as the M synchronization signal blocks, and the M synchronization signal blocks are used for the channel quality monitoring reference signal, that is, the above reference signal.

According to the method for monitoring channel quality according to the embodiment of the present application, the terminal device may use the synchronization signal block for the association and transmission of the random access channel at the initial access as the reference signal for monitoring the channel quality, and the terminal device may have at least anyway. A channel quality monitoring reference signal that can be referenced. Since the synchronization signal block received by the terminal device is determined at the initial access, channel quality monitoring must be completed on this basis.

In conjunction with the first aspect and the foregoing implementation manner, in another implementation manner of the first aspect, the M synchronization signal blocks satisfy at least one of the following conditions:

Optionally, the M synchronization signal blocks are M synchronization signal blocks with the largest received power among the synchronization signal blocks corresponding to the N channels,

Optionally, the M synchronization signal blocks are M synchronization signal blocks with the highest signal reception quality among the synchronization signal blocks corresponding to the N channels,

Optionally, the M sync signal blocks are M sync signal blocks with the highest signal to noise ratio or signal to interference and noise ratio in the sync signal block corresponding to the N channels.

According to the method for monitoring channel quality according to an embodiment of the present application, optionally, N candidate synchronization signal blocks are determined according to the plurality of synchronization signal blocks, which may be received according to reference signals of multiple synchronization signal blocks received by each channel. For one sync signal block with the highest power, reference signal reception quality, signal to noise ratio or signal to interference and noise ratio, then N channels can determine N candidate sync signal blocks, wherein the selection of M SS/PBCH BLOCKs can be According to the received power, the reception quality, or the signal-to-noise ratio of the N SS/PBCH BLOCKs that are monitored when the terminal device is connected to the initial access network device, the channel can be selected according to the selection rule of the M SS/PBCH BLOCKs in this application. The better quality SS/PBCH BLOCK is used as a reference signal for monitoring channel quality, which increases the accuracy of monitoring channel quality.

A second aspect provides a method for monitoring channel quality, including: receiving, by a terminal device, a plurality of reference signals sent by a network device through multiple channels during a P reference signal transmission period;

When the terminal device does not receive the first signaling and the second signaling that are used by the network device to monitor channel quality, determine Q among the multiple reference signals received by the P reference signal transmission periods. a reference signal for performing quality monitoring on Q channels corresponding to the Q reference signals; P and Q are integers greater than or equal to 1;

The first signaling carries an index of a channel state information reference signal CSI-RS resource that is sent by at least one period, where the CSI-RS resource is used to monitor channel quality;

The second signaling includes at least one quasi co-located QCL information index associated with a control channel demodulation reference signal, the QCL information index being used to determine a reference signal, the reference signal being used to monitor channel quality.

The terminal device receives, by the K channels, a plurality of reference signals sent by the network device in the P reference signal transmission periods, where each reference signal corresponds to one channel, where P is an integer greater than or equal to 1, and K is greater than or An integer equal to 1; when the first signaling and the second signaling sent by the network device are not received, the terminal device determines, according to the multiple reference signals, Q reference signals, where the Q reference signals and the Q One channel corresponds to one, Q is an integer greater than or equal to 1, and Q is less than or equal to K.

According to the method for monitoring channel quality according to the embodiment of the present application, when the network device is not configured with the first signaling and the second signaling, the terminal device receives multiple references through K channels from P periods when communicating with the network device. The signal and the Q reference signals of the plurality of reference signals are used as reference signals of the Q channels, and the quality of the channel corresponding to each reference signal is monitored. That is, the method for monitoring channel quality of the present application can complete the monitoring channel quality when the first signaling and the second signaling are not received, and recover in time when the channel quality does not meet the preset requirement, and can ensure the transmission of the communication system. quality.

In conjunction with the second aspect, in an implementation of the second aspect, the determining of the value of the P includes:

Optionally, the value of the P is determined according to the capability of the terminal device, that is, the different terminal devices determine the P-worth size according to their own capabilities, and can determine different Ps for different terminal devices, and support the diversity of the terminal device;

Optionally, the value of the P is specified by the communication protocol, that is, the communication system uniformly defines the P value, which reduces signaling overhead;

Optionally, the value of the P is indicated by the network device, that is, the network device may indicate different P values according to different communication states, thereby increasing processing flexibility.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, determining a value of the Q reference signals from the plurality of reference signals received by the P reference signal transmission periods The determination includes:

Determining the value of the Q according to the capability of the terminal device, that is, the different terminal devices determine the Q value according to their own capabilities, and can determine different Qs for different terminal devices, and support the diversity of the terminal device;

Optionally, the value of the Q is specified by the communication protocol, that is, the communication system uniformly defines the Q value, which reduces signaling overhead;

Optionally, the value of the Q is indicated by the network device, that is, the network device may indicate different Q values according to different communication states, thereby increasing processing flexibility.

With reference to the second aspect and the foregoing implementation manner, in another implementation manner of the second aspect, the Q reference signals satisfy at least one of the following conditions: the Q reference signals are references in reference signals corresponding to N channels The Q reference signals are the Q reference signals with the highest received power, and the Q reference signals are the Q reference signals with the highest received quality of the reference signals in the reference signals corresponding to the N channels, and the Q reference signals are the N channels. The Q reference signals with the highest signal-to-noise ratio or signal-to-interference ratio in the corresponding reference signal. According to the method for monitoring channel quality according to the embodiment of the present application, the selection of the Q reference signals may be based on the received power, the reception quality, or the signal-to-noise of the plurality of reference signals monitored in the P periods when the terminal device is connected to the network device. Compared with the determination, for each channel, the monitoring will obtain P reference signals in P cycles, but finally select the reference signal with the highest received power, reception quality or signal-to-noise ratio among the P reference signals as the reference signal of the channel. Then, for the N channels, N reference signals are selected. In the N reference signals, the Q reference signals with large received power, reception quality or signal to noise ratio are selected as reference signals. According to the selection rule of the Q reference signals in the present application, the reference signal with better quality can be selected as the reference signal for monitoring the channel quality, and the accuracy of the monitoring channel quality is increased.

A third aspect provides a method for monitoring channel quality, including: monitoring, by a terminal device, whether a preset condition is met; and when the preset condition is met, the terminal device monitors channel quality; wherein the preset condition includes at least one of the following: Condition: the preset condition includes at least one of the following conditions: a first condition: the terminal device receives the first signaling sent by the network device, where the first signaling includes an index of the CSI-RS resource sent by the at least one period, The CSI-RS resource is used to monitor channel quality, and the second condition is that the terminal device does not receive the first signaling, and the terminal device receives the second signaling sent by the network device, where the second signaling includes At least one quasi-co-located QCL information index associated with the control channel demodulation reference signal, the QCL information index being used to determine a reference signal for monitoring channel quality, and third condition: not received within a specified time window The first signaling and the second signaling, and the terminal device supports a synchronization signal block received based on an initial access or a P week before a prescribed time window The reference signal sent during the period. For example, the terminal device may use the determined synchronization signal block or reference signal in the methods described in the first aspect and the second aspect above as a reference signal.

According to the method for monitoring channel quality according to the embodiment of the present application, an activation condition for monitoring the channel quality of the terminal device is provided. For example, the terminal device may receive the first signaling and/or the second signaling, or may be If the first signaling and the second signaling are not received, the terminal device starts to monitor the channel quality, and can ensure that the terminal device can monitor the channel quality when the first signaling and the second signaling are not received, and enhance the quality of the communication. .

And, optionally, in order to avoid the delay of the information, the terminal device does not receive the first signaling and the second signaling in the time window, and immediately starts to use the default bounce mechanism to monitor the channel quality, setting a reasonable preset time. The duration of the time window may be determined by the communication protocol, determined according to the capability of the terminal device, or indicated by the network device, and can ensure that the terminal device can be able to receive the first signaling and the second signaling. Channel quality monitoring also avoids the use of first signaling or second signaling to monitor channel quality due to information delay.

With reference to the third aspect, in an implementation manner of the third aspect, the method further includes: receiving, by the terminal device, first indication information that is sent by the network device, where the first indication information is used to indicate a start time of the time window. .

According to the method for monitoring channel quality according to the embodiment of the present application, the terminal device can use the time indicated by the network device as the starting time of the preset waiting time, thereby ensuring the accuracy of the waiting time.

With reference to the third aspect, in an implementation manner of the third aspect, the method further includes: determining, by the terminal device, a start time of the time window according to a sending period of the uplink information.

According to the method for monitoring channel quality according to the embodiment of the present application, the terminal device can determine the start time of the preset waiting time by using the sending period of the uplink information, because the sending period of the uplink information is accurate for ensuring the waiting time that the terminal device can learn. Sex.

In a fourth aspect, there is provided a terminal device for performing the method of any of the first to third aspects or any of the first to third aspects. In particular, the terminal device comprises means for performing the method of any of the first to third aspects or any of the possible implementations of the first to third aspects.

In a fifth aspect, a network device is provided for communicating with the terminal device.

In a sixth aspect, a terminal device is provided, including a transceiver, a processor, and a memory. The processor is configured to control a transceiver transceiver signal for storing a computer program, the processor for calling and running the computer program from the memory, such that the terminal device performs the first to third aspects and the first to third aspects described above A method in any of the possible implementations of the aspects.

In a seventh aspect, a network device is provided, including a transceiver, a processor, and a memory. The processor is for controlling transceiver transceiver signals for storing a computer program for calling and running the computer program from memory.

The eighth aspect provides a communication system, including the terminal device provided by the fourth aspect and the network device provided by the fifth aspect, or the terminal device provided by the sixth aspect and the network device provided by the seventh aspect.

In a ninth aspect, a computer program product is provided, the computer program product comprising: computer program code, when the computer program code is run on a computer, causing the computer to perform the method of the above aspects.

In a tenth aspect, a computer readable storage medium is provided for storing a computer program, the computer program comprising instructions for performing the method of the above aspects.

In an eleventh aspect, a chip system is provided, comprising a processor for calling and running the computer program from a memory, the computer program for implementing the method of the above aspects.

DRAWINGS

1 is a schematic diagram of a wireless communication system 100 suitable for use in an embodiment of the present application;

2 is a schematic flow chart of a method for monitoring channel quality;

3 is a schematic flowchart of a method for monitoring channel quality provided by an embodiment of the present application;

4 is another schematic flowchart of a method for monitoring channel quality provided by an embodiment of the present application;

FIG. 5 is another schematic flowchart of a method for monitoring channel quality according to an embodiment of the present disclosure;

6 is a schematic diagram of a time window of an embodiment of the present application;

FIG. 7 is a schematic diagram of an embodiment of starting monitoring channel quality according to an embodiment of the present application; FIG.

FIG. 8 is a schematic block diagram of a terminal device according to an embodiment of the present application;

FIG. 9 is another schematic block diagram of a terminal device according to an embodiment of the present application;

FIG. 10 is a schematic block diagram of a network device according to an embodiment of the present application.

Detailed ways

The technical solutions in the present application will be described below with reference to the accompanying drawings.

The technical solutions of the embodiments of the present application can be applied to various communication systems, such as a Global System of Mobile communication (GSM) system, a Code Division Multiple Access (CDMA) system, and a wideband code division multiple access. (Wideband Code Division Multiple Access, WCDMA) system, General Packet Radio Service (GPRS), Long Term Evolution (LTE) system, LTE Frequency Division Duplex (FDD) system, LTE Time Division Duplex (TDD), Universal Mobile Telecommunication System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX) communication system, and the future fifth generation (5th Generation, 5G) system or new radio (New Radio, NR) and so on.

The terminal device in the embodiment of the present application may refer to a user equipment, an access terminal, a subscriber unit, a subscriber station, a mobile station, a mobile station, a remote station, a remote terminal, a mobile device, a user terminal, a terminal, a wireless communication device, a user agent, or User device. The terminal device may also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a Wireless Local Loop (WLL) station, a Personal Digital Assistant (PDA), with wireless communication. Functional handheld devices, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in future 5G networks, or in the future evolution of the Public Land Mobile Network (PLMN) The terminal device and the like are not limited in this embodiment of the present application.

The network device in the embodiment of the present application may be a device for communicating with the terminal device, and the network device may be a Global System of Mobile communication (GSM) system or Code Division Multiple Access (CDMA). Base Transceiver Station (BTS), which may also be a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, or an evolved base station in an LTE system (Evolutional The NodeB, eNB or eNodeB) may also be a wireless controller in a Cloud Radio Access Network (CRAN) scenario, or the network device may be a relay station, an access point, an in-vehicle device, a wearable device, and a future. The network device in the 5G network or the network device in the PLMN network in the future is not limited in this embodiment.

1 is a schematic diagram of a wireless communication system suitable for use in an embodiment of the present application. The communication system 100 includes a network device 102, which may include one antenna or multiple antennas such as

antennas

104, 106, 108, 110, 112, and 114. Additionally, network device 102 may additionally include a transmitter chain and a receiver chain, as will be understood by those of ordinary skill in the art, which may include multiple components related to signal transmission and reception (eg, processor, modulator, multiplexer) , demodulator, demultiplexer or antenna, etc.).

Network device 102 can communicate with a plurality of terminal devices, such as terminal device 116 and terminal device 122. However, it will be appreciated that network device 102 can communicate with any number of terminal devices similar to terminal device 116 or terminal device 122.

Terminal devices

116 and 122 can be, for example, cellular telephones, smart phones, portable computers, handheld communication devices, handheld computing devices, satellite radios, global positioning systems, PDAs, and/or any other for communicating over wireless communication system 100. Suitable for equipment.

As shown in FIG. 1, terminal device 116 is in communication with

antennas

112 and 114, wherein

antennas

112 and 114 transmit information to terminal device 116 over a forward link (also referred to as downlink) 118 and through the reverse link (also Information referred to as uplink 120 receives information from terminal device 116. In addition, terminal device 122 is in communication with

antennas

104 and 106, wherein

antennas

104 and 106 transmit information to terminal device 122 over forward link 124 and receive information from terminal device 122 over reverse link 126.

For example, in a Frequency Division Duplex (FDD) system, for example, forward link 118 can use a different frequency band than reverse link 120, and forward link 124 can be used differently than reverse link 126. Frequency band.

As another example, in a Time Division Duplex (TDD) system and a Full Duplex system, the forward link 118 and the reverse link 120 can use a common frequency band, a forward link 124, and a reverse link. Link 126 can use a common frequency band.

Each antenna (or set of antennas consisting of multiple antennas) and/or regions designed for communication is referred to as a sector of network device 102. For example, the antenna group can be designed to communicate with terminal devices in sectors of the network device 102 coverage area. The network device can transmit signals to all of the terminal devices in its corresponding sector through a single antenna or multiple antenna transmit diversity. In the course of network device 102 communicating with

terminal devices

116 and 122 via

forward links

118 and 124, respectively, the transmit antenna of network device 102 may also utilize beamforming to improve the signal to noise ratio of

forward links

118 and 124. Moreover, when the network device 102 utilizes beamforming to transmit signals to the randomly dispersed

terminal devices

116 and 122 in the associated coverage area, as compared to the manner in which the network device transmits signals to all of its terminal devices through single antenna or multi-antenna transmit diversity, Mobile devices in neighboring cells are subject to less interference.

At a given time, network device 102, terminal device 116, or terminal device 122 may be a wireless communication transmitting device and/or a wireless communication receiving device. When transmitting data, the wireless communication transmitting device can encode the data for transmission. In particular, the wireless communication transmitting device may acquire (eg, generate, receive from other communication devices, or store in memory, etc.) a certain number of data bits to be transmitted over the channel to the wireless communication receiving device. Such data bits may be included in a transport block (or multiple transport blocks) of data that may be segmented to produce multiple code blocks.

In addition, the communication system 100 can be a PLMN network or a D2D network or an M2M network or other network. FIG. 1 is only a simplified schematic diagram of an example, and the network may also include other network devices or terminal devices, which are not shown in FIG.

In the following, how to determine the reference signal according to the embodiment of the present invention will be described in detail based on the application scenario of FIG.

The communication system 100 shown in FIG. 1 , optionally, the NR communication system is taken as an example in the present application. To ensure the coverage of the network device 102, the gain of the antenna array can be increased by a beamforming technique, wherein the beamforming is one. Based on the antenna array-based signal pre-processing technique, beamforming produces a directional beam by adjusting the weighting coefficients of each array element in the antenna array, thereby enabling significant array gain.

For the sake of understanding, the problem of the antenna array gain is briefly described by taking the signal-to-noise ratio as an example. For a channel, the error rate of the information content transmitted on the channel can indirectly indicate the quality of the channel, and the signal-to-noise ratio For example, the larger the channel energy, the larger the signal-to-noise ratio, and the smaller the error rate of the information transmitted on the channel, that is, the better the channel quality, then for the above beam, if the transmitting beam of the transmitting device is If the receiving beam of the receiving device is well paired, the beam corresponding to the beam pair will obtain beam forming gain, which can improve the signal receiving power, improve the signal to noise ratio and the signal to interference and noise ratio. The bit error rate is reduced. In the present application, in the communication system, it is considered that the channel quality is at a normal level in this case.

Conversely, if the beam mismatch occurs due to the movement or rotation of the terminal device, that is, the transmission beam is not aligned with the receiving device, and/or the receiving beam is not aligned with the transmitting device, the channel corresponding to the mismatched beam pair cannot be A good beamforming gain is obtained, and may even be in the energy blank area of the beam. At this time, the signal receiving power, the signal-to-noise ratio, or the signal-to-noise ratio are decreased, so that the bit error rate is greatly improved. That is to say, the channel quality is lower than the normal level.

Optionally, in order to evaluate the change of the channel quality, the error rate when the terminal device accurately pairs the beam is used as a threshold value of the corresponding channel error rate, and when the error rate is higher than the threshold, the foregoing may be determined. The beams are not accurately paired, but an offset occurs. When the above beam pairing is not accurate, it is called beam mismatch.

Therefore, optionally, in the present application, the beam pairing between the terminal device and the network device may be further monitored by monitoring the channel quality. The multiple channels mentioned in the present application may be understood as signals transmitted through multiple beams. The channel that is experienced.

It should be understood that the description of the error rate is merely a simple example. Other parameters for indicating the channel quality are also within the protection scope of the present application, and are not listed here.

The aforementioned communication system 100 needs to be tested for the Robust of the beam access based communication system 100 with beam enhancement antenna gain.

Alternatively, the aforementioned Robust refers to the key to the NR's ability to introduce the beam-based communication system 100 in an abnormal and dangerous situation in order to support high frequency communication, for example, at the network device 102 and the terminal device 116 and/or the terminal device 122. In the case where the transceiving beam pairing occurs due to the mismatch of the movement or rotation of the terminal device 116 and/or the terminal device 122, the transceiving beam pairing between the network device 102 and the terminal device 116 and/or the terminal device 122 is mismatched. The quality of the channel corresponding to the beam pairing will be degraded. If the pairing of the beam pair cannot be quickly recovered, the quality of the channel corresponding to the beam pairing cannot be recovered, and the bit error rate of the information transmitted through the channel corresponding to the beam pairing will be It will increase, that is, the transmission and reception of the inaccurate communication system 100 may be greatly affected or even disconnected, and then the upper layer needs to be requested to resume the connection.

It should be understood that the above-mentioned terminal device 116 and/or terminal device 122 are an exemplary expression and cannot limit the scope of protection of the present application.

In the process of recovering the transmit and receive beam pairing, a beam failure detection, a new candidate beam identification, a beam failure recovery request (BFRR), and the like are included. The beam mismatch detection reference signal can be used to monitor the beam (channel) quality. The premise of monitoring the channel quality is that one or more reference signals need to be determined. When monitoring, the channel quality is determined according to a preset condition of the system, for example, The block error ratio (BLER) of the corresponding channel may be calculated according to the reference signal, and for the channel whose quality meets the requirements, the communication system has a corresponding threshold for the BLER requirement of the channel, that is, when the information is transmitted through the channel, the information bit The BLER cannot exceed the threshold.

Optionally, when the protocol specifies that the threshold of the BLER is 10 ^-4 , when the BLER calculated by all the reference signals used for monitoring the channel quality exceeds the threshold, the channel quality is considered to be inconsistent, that is, the channel is The channel pairing of the corresponding terminal device and the network device is mismatched, and the channel quality recovery is required. For the beam, a new candidate beam search, a beam mismatch reply request, and the like are required. In this application, how to complete the channel quality recovery is performed. The new candidate beam search, the specific implementation of the beam mismatch recovery request, and the like are not limited, and the channel quality recovery can be completed based on the prior art after monitoring the channel quality. The present application mainly relates to determining the reference signal because the monitoring channel quality is measured by measuring one. Or multiple reference signals to achieve.

It should be understood that the protocol specifies that the threshold of the BLER is an example and cannot limit the scope of protection of the present application. Other methods capable of determining the threshold of the BLER are also within the protection scope of the present application.

It should be understood that FIG. 1 is only an application scenario diagram, and other communication systems to which the present application can be applied are also within the scope of the present application. In the application scenario of FIG. 1, FIG. 2 shows a schematic flowchart of a method for monitoring channel quality.

2 is a schematic flow chart of a method for monitoring channel quality. The three steps of S110-S130 are included, and the three steps are described in detail below.

S110. The network device configures signaling and sends a reference signal.

Optionally, the existing method for monitoring channel quality, the terminal device determines the reference signal according to the first signaling configured by the network device, for example, the network device first configures the first signaling, and the first signaling may be an explicitly configured beam. a mismatch detection reference signal resource configuration config. The first signaling is used to indicate an index set of a reference signal of the terminal device, where the reference signal associated with the index set includes at least a periodically transmitted channel. a reference information reference signal (CSI-RS), the reference signal associated with the index set is used to monitor channel quality. Generally speaking, it can be understood that the first signaling includes CSI sent by at least one period. An index of RS resources used to monitor link communication quality. Then, the network device needs to explicitly notify the terminal device of the CSI-RS transmitted by the terminal device by using the first signaling, and determines the at least one CSI-RS as a reference signal for monitoring channel quality.

Optionally, the existing method for monitoring channel quality, when the terminal device does not receive the first signaling, the terminal device determines the reference signal according to the second signaling configured by the network device, for example, the network device first configures the second signaling. The second signaling includes one or more index sets of Transmission Configuration Indicator (TCI) states, and the TCI state of the index set is used to indicate a Control Channel Demodulation Reference Signal (DMRS). a Quasi-collocation (QCL) relationship with other reference signals; in addition, the second signaling may further include a selection or activation instruction for selecting among a set of TCI status indices An indication of the QCL relationship between the demodulation reference signal antenna port of the current control channel and the antenna port of the other reference signals. The other reference signals include at least one of CSI-RS, SS/PBCH BLOCK and other reference signals. The reference signal may be determined according to the indication information of the TCI state, that is, the terminal device may select a CSI-RS or a synchronization signal block (Synchronous signal & PBCH block, SS/PBCH) that is sent in at least one cycle that is the same as the indication information of the TCI state. Block), used as a reference signal for monitoring the quality of the corresponding channel.

Optionally, the network device sends a reference signal that includes at least one of the foregoing reference signals for channel quality monitoring. When the network device configures the foregoing first signaling and/or the second signaling, the terminal device may be configured according to the foregoing first The command and/or second signaling determines from the reference signal a reference signal that can be used to monitor channel quality.

S120. The terminal device determines the reference signal from the reference signal set according to the signaling, and monitors the channel quality.

Optionally, the terminal device determines the reference signal from the reference signal set according to the signaling, and monitors the quality of the channel corresponding to the reference signal according to the determined reference signal.

Optionally, when the network device configures the foregoing first signaling, the terminal device receives the first signaling, and in this case, the terminal device may determine the reference according to the index set of a reference signal indicated by the first signaling. The signal, because the reference signal associated with the index set indicated by the first signaling includes at least one periodically transmitted CSI-RS, and in the NR, only the periodically transmitted CSI-RS and SS/PBCH BLOCK can be used for the monitoring channel. Quality, so when the network device configures the first signaling, the terminal device can determine to use the CSI-RS as a reference signal, and perform quality monitoring on the channel corresponding to the CSI-RS, for example, calculate a CSI-RS corresponding The bit error rate compares the calculated bit error rate with the system default bit error rate, and determines whether the transceiving beam pair between the terminal device and the network device corresponding to the channel is mismatched by monitoring the channel quality.

Optionally, when the network device does not configure the foregoing first signaling, but configures the foregoing second signaling, the terminal device may consider that the reference signal includes at least one periodically sent CSI-RS or SS/PBCH BLOCK, and the The relationship between the CSI-RS or the SS/PBCH block sent in at least one period and the DLRS used in the physical downlink control channel (PDCCH) is QCL, and it should be understood that when the second signaling is configured, the terminal device The default reference signal is required to satisfy the QCL relationship with the PDCCH of the PDCCH, that is, in this case, the terminal device needs to know which reference signals have a QCL relationship with the DMRS of the PDCCH, and the second signaling includes at least one and control. The quasi-co-located QCL information index associated with the channel demodulation reference signal is used to indicate a QCL relationship between the demodulation reference signal antenna port of the control channel and the antenna port of the other reference signal, and the terminal device can determine the monitoring channel according to the indication. Quality reference signal.

Generally, the QCL relationship can be understood to include at least a spatial QCL relationship. Here, the spatial QCL relationship can also be understood as a kind of QCL relationship.

The QCL relationship involved in the embodiment of the present application refers to that the signal corresponding to the antenna port of the signal has the same parameter, or the QCL relationship refers to that the terminal can determine the QCL relationship with the antenna port according to the parameter of one antenna port. The parameters of one antenna port, or QCL relationship means that the two antenna ports have the same parameters, or the QCL relationship means that the parameter difference between the two antenna ports is less than a certain threshold. The parameter may be delay spread, Doppler spread, Doppler shift, average delay, average gain, and spatial receive parameters; wherein the spatial QCL relationship may be a spatial receive parameter between two antenna ports, including Angle of arrival (AOA), average AOA, AOA extension, Angle of Departure (AOD), average departure angle AOD, AOD extension, receive antenna spatial correlation parameters, transmit antenna spatial correlation parameters, transmit beam At least one of a receive beam and a resource identifier.

The above beam includes at least one of the following, precoding, weight number, and beam number. The angle may be a decomposition value of a different dimension, or a combination of different dimensional decomposition values. The antenna ports are antenna ports having different antenna port numbers, and/or antenna ports having the same antenna port number for transmitting or receiving information within different time and/or frequency and/or code domain resources, and/or having Antenna ports for transmitting or receiving information at different time and/or frequency and/or code domain resources for different antenna port numbers. The resource identifier includes a Channel State Information Reference Signal (CSI-RS) resource identifier, or an SRS resource identifier, or a resource identifier of a synchronization signal/synchronization signal block, or a resource identifier of a preamble sequence transmitted on the PRACH. Or the resource identifier of the DMRS, which is used to indicate the beam on the resource. For example, for a spatial QCL relationship between a port of a downlink signal and a port of a downlink signal, or a port of an uplink signal and a port of an uplink signal, two signals may have the same AOA or AOD for indicating the same reception. Beam or transmit beam. For example, for the QCL relationship between the downlink signal and the uplink signal or between the uplink signal and the downlink signal port, the AOA and the AOD of the two signals may have a corresponding relationship, or the AOD and the AOA of the two signals have a corresponding relationship, that is, the beam may be utilized. Correspondence, the uplink transmit beam is determined according to the downlink receive beam, or the downlink receive beam is determined according to the uplink transmit beam.

A signal transmitted on a port having a spatial QCL relationship may also be understood as having a corresponding beam, and the corresponding beam includes at least one of the following: the same receiving beam, the same transmitting beam, and a transmitting beam corresponding to the receiving beam (corresponding to mutual An easy scenario), a receive beam corresponding to the transmit beam (corresponding to a scene with reciprocity).

A signal transmitted on a port having a spatial QCL relationship can also be understood as receiving or transmitting a signal using the same spatial filter. The spatial filter can be at least one of: precoding, weight of the antenna port, phase deflection of the antenna port, and amplitude gain of the antenna port.

A signal transmitted on a port having a spatial QCL relationship may also be understood as having a corresponding beam pair link (BPL), and the corresponding BPL includes at least one of the following: the same downlink BPL, the same uplink BPL, and the downlink BPL. The corresponding uplink BPL is the downlink BPL corresponding to the uplink BPL.

The second signaling is used to indicate the QCL relationship. Therefore, when the network device configures the second signaling, the terminal device can determine the CSI-RS or SS/PBCH BLOCK transmitted periodically in a QCL relationship with the DMRS for the PDCCH as the reference signal.

Optionally, after determining the reference signal according to the foregoing first signaling and/or the second signaling, the terminal device can monitor channel quality according to the reference signal, for example, acquiring channel information error according to CSI-RS or SS/PBCH BLOCK. Rate, judging the calculated error rate and the preset error rate threshold, and determining the channel quality dissatisfaction when the calculated error rate is greater than the preset threshold, that is, the beam pairing corresponding to the channel occurs. The calculation of the bit error rate of the channel information may be based on an implementation algorithm of the terminal device, which is not limited by the present invention.

S130. The terminal device sends a channel quality recovery request.

Optionally, when the terminal device monitors that the quality of the channel does not meet the requirement, that is, the error rate calculated according to the at least one reference signal is greater than a threshold of the preset error rate, the terminal device needs to send to the network device. A channel quality recovery request, for the beam corresponding to the channel, that is, the terminal device needs to send a beam failure recovery request.

Based on the method for determining the reference signal shown in FIG. 2, the terminal device needs to determine the reference signal based on the signaling configured by the network device, and the terminal device cannot be configured when the network device does not configure the related first signaling and the second signaling. Determining the reference signal, and thus failing to monitor the channel quality. At this time, if the transceiving beam pairing between the network device and the terminal device is mismatched due to the movement or rotation of the terminal device, the channel quality is lower than the preset value. However, there is no corresponding reference signal at that time. For channel monitoring, the channel quality cannot be recovered quickly. Then the transmission of the communication system may be greatly affected or even disconnected, and then the upper layer needs to be requested to resume the connection.

Therefore, the present application proposes a method for monitoring channel quality. When the terminal device fails to obtain the foregoing two signaling configurations, the terminal device can directly determine the reference signal according to the manner agreed by the protocol, and further between the network device and the terminal device. The method for monitoring the quality of the channel provided by the embodiment of the present application is shown in FIG. 3 is a schematic flowchart of the method for monitoring the quality of the channel provided by the embodiment of the present application, in which the channel quality is lower than the preset value, and the channel quality is quickly restored to ensure the transmission of the communication system.

FIG. 3 is a schematic flowchart of a method for monitoring channel quality according to an embodiment of the present application. It includes three steps of S210-S230. The three steps are described in detail below.

S210. The network device sends a reference signal.

Optionally, in this embodiment, the network device sends a reference signal to the terminal device by using a channel, where the reference signal includes the CSI-RS and/or the SS/PBCH BLOCK, but the network device does not configure the first signaling to the terminal device. And the second signaling, that is, the terminal device cannot receive the corresponding indication information of the network device about the reference signal. In this case, the terminal device can still monitor the channel quality. In this embodiment, the terminal device is proposed. A method of determining an SS/PBCH BLOCK as a reference signal among the above reference signals.

S220. The terminal device determines an SS/PBCH BLOCK received during initial access as a reference signal to monitor channel quality.

Optionally, in this embodiment, the terminal device first monitors whether the first signaling is received, and when the first signaling is not received, the terminal device monitors whether the second signaling is received, when neither receiving When the first signaling is not received, the terminal device may directly determine a default reference signal according to the protocol, where the default reference signal may be a previously received SS/PBCH block;

Optionally, the terminal device determines whether the current time window is still in a specified time window, and the duration and start time of the specified time window may be determined by the communication protocol, determined according to the capability of the terminal device, or indicated by the network device. of.

In this embodiment, the duration and the start time of the specified time window are defined by the protocol. The protocol specifies that the start time of the specified time window is the current physical layer of the first acknowledgement character (Acckowledgement, Ack) reported by the terminal device. The duration of the time window is 5 microseconds. Then, when the terminal device determines that the time when the first signaling and the second signaling are not received, the terminal device continues to monitor whether it is received. The first signaling and/or the second signaling, if the time is already outside the time window, the terminal device directly determines the reference signal according to the protocol without receiving the first signaling and the second signaling.

It should be understood that the determination of the above time window is an illustrative form, and the detailed time window concept will be further described in conjunction with FIG.

In this embodiment, the terminal device directly determines the reference signal according to the protocol, without receiving the first signaling and the second signaling, including:

First, when the terminal device initially accesses the network device, the synchronization signal block for association and transmission of a random access channel (RACH) is selected, and the synchronization signal block may be unique;

Optionally, after the initial access, the terminal device does not receive the foregoing first signaling and the second signaling, and the terminal device uses the unique SS/PBCH BLOCK determined at the initial access time as a reference signal. The unique SS/PBCH BLOCK is the one that is selected and associated with the random access channel in the initial access procedure.

Optionally, in the present application, the synchronization signal block includes a synchronization signal and a broadcast signal, wherein the synchronization signal includes a Primary Synchronization Signal (PSS) and a Secondary Synchronization Signal (SSS), and the broadcast signal is a physics. The signal transmitted by the physical broadcast channel (PBCH), and the PBCH is demodulated by the DMRS. In the present application, the synchronization signals PSS and SSS in the synchronization signal block are used for synchronization, which is not limited in this application, but is carried on the PBCH. The system information bits, after channel estimation by the DMRS of the PBCH, can finally solve the bits of the system information carried by the PBCH, and obtain the bit error rate, and evaluate the proportion of the successfully decoded bits or bit blocks. The ratio of successful decoding can evaluate the channel quality, so the SS/PBCH BLOCK can be used as a reference signal, that is, the error rate of the SS/PBCH BLOCK transmitted according to the channel corresponding to the beam pairing between the current terminal device and the network device can be determined. Whether the beam pairing is mismatched. Of course, the terminal device can also fit the error rate by calculating the other performance parameters of the reference signal of the synchronization signal block by other fitting methods. The specific method can be implemented based on the terminal device, which is not limited by the present invention.

S230. The terminal device sends a channel quality recovery request.

Optionally, when the terminal device monitors that the quality of the channel does not meet the requirement, that is, the terminal device may calculate that the error rate calculated according to the unique SS/PBCH BLOCK is greater than or equal to a threshold value of the preset error rate, the terminal The device needs to send a channel quality recovery request to the network device, and the terminal device needs to send a beam mismatch recovery request for the beam corresponding to the channel.

FIG. 4 is another schematic flowchart of a method for monitoring channel quality provided by an embodiment of the present application. Including the S310-S330 three steps, the three steps are described in detail below.

S310. The network device sends a reference signal.

In this embodiment, the network device sends a reference signal to the terminal device by using a channel, where the reference signal includes the CSI-RS and/or the SS/PBCH BLOCK, but the network device does not configure the first signaling and the second signaling to the terminal device. Therefore, the terminal device cannot receive the corresponding indication information of the network device for the channel monitoring reference signal. In this case, the terminal device can still monitor the channel quality, and the embodiment proposes that the terminal device is from the reference signal. A method of determining a plurality of SS/PBCH BLOCKs as reference signals.

S320. The terminal device determines, by using a plurality of SS/PBCH BLOCKs received during initial access, as a reference signal to monitor channel quality.

In this embodiment, it is also required to determine whether the first signaling and the second signaling are received, and the determining method is similar to the method for determining whether the first signaling and the second signaling are received in FIG. Narration.

Optionally, in this embodiment, the terminal device directly determines the reference signal according to the protocol, without receiving the first signaling and the second signaling, including:

First, the terminal device receives multiple synchronization signal blocks sent by the network device through multiple channels during initial access; the terminal device does not receive the first signaling and the second signaling for monitoring channel quality sent by the network device. During signaling, M synchronization signal blocks are determined from a plurality of synchronization signal blocks received in the initial access procedure to perform quality monitoring on M channels corresponding to the M synchronization signal blocks; An integer greater than or equal to 1;

The plurality of synchronization signal blocks may be the synchronization signal block obtained by scanning the multiple times when the terminal device is initially accessed, because when the terminal device initially accesses the network device, it is not necessarily when the first synchronization signal block is swept. The process of initial access is completed. For example, when the communication protocol specifies that the terminal device monitors the channel quality of the M channels, the terminal device selects M synchronization signal blocks from the plurality of synchronization signal blocks to monitor the channel quality of the M channels.

Optionally, the plurality of synchronization signal blocks may be received, and the N synchronization signal blocks are performed according to a reference signal receiving power (RSRP) size of the N synchronization signal blocks in the plurality of synchronization signal blocks. Sorting, wherein the RSRP may be the layer 1 reference signal receiving power: L1-RSRP, taking the M sync signal blocks with the largest RSRP among the N sync signal blocks;

Or, sorting the N sync signal blocks according to the reference signal receiving quality (RSRQ) of the sync signal block, and obtaining the M sync signal blocks with the highest RSRQ among the N sync signal blocks;

Or, the N synchronization signal blocks are sorted according to the signal to noise ratio (SNR) or the signal to interference plus noise ratio (SINR) of the synchronization signal block, and N synchronization signal blocks are obtained. M sync signal blocks with the highest SNR or SINR.

Optionally, how to select the selected M synchronization signal blocks as the reference signals of the M monitoring channel qualities corresponding to the M synchronization signal blocks according to the foregoing:

For example, in this embodiment, when the terminal device scans the synchronization signal block twice in the initial access, the initial access process is completed, and then the plurality of synchronization signal blocks sent by the network device are received through the N channels. The N sets of sync signal blocks are included, and a set of sync signal blocks are received through each channel, and each set of sync signal blocks includes two sync signal blocks, and the sync signal blocks in each set of sync signal blocks have the same index.

Then, one synchronization signal block with the highest RSRP, RSRQ, SNR or SINR can be selected in each group of synchronization signal blocks as the candidate synchronization signal block of the group, then the N groups of synchronization signal blocks can determine N candidate synchronization signal blocks. The Ms with the highest RSRP, RSRQ, SNR or SINR among the N candidate synchronization signal blocks may be used as reference signals of the corresponding channels of the M synchronization signal blocks.

It should be understood that the above scanning twice is only an exemplary manner and cannot limit the scope of protection of the present application.

Optionally, in this embodiment, the method for monitoring channel quality according to the determined M synchronization signal blocks as reference signals is similar to the monitoring method described in FIG. 3, and details are not described herein again.

S330. The terminal device sends a channel quality recovery request.

Optionally, when the terminal device monitors that the quality of the channel does not meet the requirement, that is, the error rate calculated by the terminal device according to the multiple SS/PBCH BLOCKs is greater than or equal to a threshold value of the preset error rate. Or, according to the foregoing multiple error rate of the SS/PBCH BLOCK calculation, at least one threshold value greater than or equal to the preset error rate, the terminal device needs to send a channel quality recovery request to the network device, corresponding to the channel. In the case of a beam, the terminal device needs to transmit a beam mismatch recovery request.

FIG. 5 is another schematic flowchart of a method for monitoring channel quality provided by an embodiment of the present application. Including the S410-S430 three steps, the three steps are described in detail below.

S410. The network device sends a reference signal.

In this embodiment, the network device sends a reference signal to the terminal device by using a channel, where the reference signal includes the CSI-RS and/or the SS/PBCH BLOCK, but the network device does not configure the first signaling and the second signaling to the terminal device. Therefore, the terminal device cannot receive the corresponding indication information of the network device for the channel monitoring reference signal. In this case, the terminal device can still monitor the channel quality. In this embodiment, the terminal device is given the above reference. A method of determining at least one reference signal as a reference signal in the signal.

S420. The terminal device determines at least one reference signal as a reference signal to monitor channel quality.

The terminal device receives multiple reference signals sent by the network device through multiple channels during P reference signal transmission periods;

When the terminal device does not receive the first signaling and the second signaling that are used by the network device to monitor channel quality, determine Q among the multiple reference signals received by the P reference signal transmission periods. a reference signal for quality monitoring of Q channels corresponding to the Q reference signals; P and Q are integers greater than or equal to 1.

The reference signal may be a CSI-RS or an SS/PBCH BLOCK. The values of the P and the Q may be determined by a protocol or may be determined according to the capabilities of the terminal device or according to the network device.

Optionally, the reference signal sent by the network device by each terminal in the P period includes P reference signals, and the one of the P reference signals is selected as the corresponding monitoring channel, where the RSRP, the RSRQ, or the SNR or the SINR is the largest. Quality candidate signal;

Or selecting the RSRP, RSRQ, or SNR or SINR average of the P reference signals as the RSRP, RSRQ, or SNR or SINR of the candidate reference signal corresponding to the monitoring channel quality;

Or other filtering manners: selecting the RSRP, RSRQ, or SNR or SINR as the RSRP, RSRQ, or SNR or SINR of the candidate reference signal corresponding to the monitoring channel quality.

Optionally, according to the RSRP, RSRQ or SNR of the P reference signals received from the P periods of each channel, calculate an RSRP, RSRQ or SNR or SINR as the RSRP and RSRQ of the candidate reference signals for monitoring the channel quality. Or SNR or SINR, then for K channels, finally the RSRP, RSRQ or SNR or SINR of the K candidate reference signals can be calculated.

And selecting, according to RSRP, RSRQ or SNR or SINR of the K candidate reference signals, a Q reference signal with a maximum RSRP, RSRQ or SNR or SINR of the reference signal as a reference signal, and monitoring each of the Q reference signals The quality of the channel to which the signal corresponds.

In order to briefly explain the specific implementation of the above method for determining a reference signal, the specific procedure for determining the reference signal is explained by taking the above-mentioned P=K=Q=2 as an example.

In the first period P1, the terminal device receives two reference signals T1 and T2 sent by the network device through two channels K1 and K2, where T1 corresponds to K1, and T2 corresponds to K2;

The terminal device receives two reference signals T3 and T4 sent by the network device through the two channels K1 and K2 in the second period P2, where T3 corresponds to K1, and T4 corresponds to K2;

The terminal device selects, from the two reference signals T1 and T3 corresponding to the first channel K1, the reference power of the reference signal, the reference signal receiving quality or the reference signal with the highest signal-to-noise ratio of the reference signal, for example, determining that it is T1;

The terminal device selects, from the two reference signals T2 and T4 corresponding to the second channel K2, the reference power of the reference signal, the reference signal receiving quality or the reference signal having the highest signal-to-noise ratio of the reference signal, for example, determining that it is T2;

Then, the terminal device can select T1 and T2 as reference signals of the corresponding channels K1 and K2.

It should be understood that the description of P=K=Q=2 is an example and cannot limit the scope of protection of the present application.

Optionally, the closest at least one reference signal transmission period of the current communication moment may be selected in the above P periods.

Optionally, after the terminal device determines the reference signal, the error rate can be calculated according to the reference signal corresponding to each channel, and the relationship between the calculated error rate and the predetermined threshold can be used to determine the channel corresponding to the reference signal. Whether the quality meets the requirements, and whether the transmission and reception beam pairing between the corresponding network device and the terminal device is mismatched according to the channel quality.

S430. The terminal device sends a channel quality recovery request.

Optionally, when the terminal device monitors that the quality of the channel does not meet the requirement, that is, the error rate calculated by the terminal device according to the multiple reference signals is greater than or equal to a threshold value of the preset error rate, or And the at least one error rate calculated according to the plurality of reference signals is greater than or equal to a threshold value of the preset error rate, and the terminal device needs to send a channel quality recovery request to the network device, that is, the beam corresponding to the channel is The terminal device needs to send a beam mismatch recovery request.

According to the method for monitoring channel quality of the present application shown in FIG. 3 to FIG. 5, the terminal device can determine the reference signal and monitor the quality of the channel when the first signaling and the second signaling are not received.

Optionally, in order to avoid the signaling delay, the terminal device does not receive the first signaling and the second signaling, and the application may provide that the terminal device still determines whether the first signaling and the second signaling are not received. Within a specified time window, if the first signaling and the second signaling are not received outside the time window, the terminal device may determine the reference signal according to the method shown in FIG. 3 to FIG. 5, and monitor the channel. Quality; otherwise, if still within the time window, continue to detect the first signaling and the second signaling. The method of monitoring channel quality of the present application shown in Figures 3 through 5 can enhance the transmission performance of the communication system.

FIG. 6 is a schematic diagram of a time window in an embodiment of the present application. Where M1 represents the start time of the time window and Len represents the duration of the time window.

Optionally, the M1 in the application may be the first indication information that is sent by the terminal device, and the first indication information may be used to indicate the M1. For example, the terminal device may receive the current current of a specific signaling. The physical layer time slot may be a certain time after receiving a specific signaling according to the protocol. The time may be an Orthogonal Frequency Division Multiplexing (OFDM) symbol, or a certain slot. The first indication information may be Radio Resource Control (RRC) or Media access control (MAC) control element (CE) / downlink control information (DCI) indication information.

It should be understood that the first indication information is not necessarily used to indicate the starting time, and may be used for other purposes, but the protocol may stipulate that the time slot received by the signaling is the starting time, which is equivalent to the implicit indication start. time.

Optionally, the M1 in the present application may be that the terminal device determines the M1 according to the sending period of the uplink information, for example, may be the Kth acknowledgement (Ack) or the negative answer (Negative Acknowledgment, Nack) reported by the terminal device. The current physical layer slot, K is an integer greater than or equal to 1, and may be a certain time after the Ack or Nack is reported by the protocol. It should be understood that the present application does not limit how to determine the starting time of the time window, and may be any moment acquired by the terminal device, but the determining method of the moment may be agreed in the protocol.

Optionally, the foregoing Len in the present application may be an absolute time, for example, in absolute time, such as subtle or millisecond, or a relative time, and the length of the frame structure such as symbols, time slots, and subframes is used as a unit of measurement. For example, the duration of the time window may be 5 microseconds or 5 time slots, which is not limited in this application.

Optionally, in the present application, the foregoing specified time window may be a time window shown in FIG. 6, or may be composed of several time windows shown in FIG. 6, which is not limited in this application.

Optionally, in the present application, the time window shown in FIG. 6 represents a specified time window. In the specified time window in the present application, the terminal device periodically monitors whether the first signaling and/or the above signaling is received. Or the second signaling, when the predetermined time window is reached, the first signaling and the second signaling terminal device are not received according to any one of the methods for determining the reference signal shown in FIG. 3 to FIG. Determining the reference signal and starting to monitor the channel quality. In this application, the terminal device monitoring channel quality within the specified time window may be used as an activation condition for monitoring channel quality.

Optionally, in this application, the activation conditions for specifying the quality of the monitoring channel include:

a first condition: the terminal device receives the first signaling sent by the network device, where the first signaling is used to indicate an index set of the periodically transmitted reference signal,

a second condition: the terminal device does not receive the first signaling, and the terminal device receives the second signaling sent by the network device, where the second signaling is used to indicate a periodically transmitted reference signal and downlink Quasi-co-location relationship of the demodulation reference signal of the control channel,

A third condition: the first signal and the second signal are not received within a prescribed time window and the reference signal is determined according to the method of determining the reference signal described in FIGS. 3-5.

A detailed flowchart is given in accordance with the activation condition of the above-mentioned monitoring channel quality.

FIG. 7 is a schematic diagram of an embodiment of starting monitoring channel quality according to an embodiment of the present application. The five steps of S510-S550 are included, and the five steps are described in detail below.

S510. The terminal device monitors whether the first signaling is received.

Optionally, in the present application, when monitoring the channel quality, the terminal device first monitors whether the first signaling configured by the network device is received, and the first signaling is used to indicate which reference signal the terminal device uses as a reference for monitoring the channel quality. The signal, for example, in the present application, the first signaling may be an explicitly configured beam mismatch detection reference signal resource configuration signaling.

Optionally, when the terminal device monitors the first signaling of the network device configuration, the terminal device uses the reference signal indicated by the first signaling as a reference signal for monitoring channel quality, and performs S550 to perform a channel corresponding to the reference signal. Channel monitoring.

Optionally, when the terminal device does not monitor the first signaling of the network device configuration, perform S520.

S520. The terminal device monitors whether the second signaling is received.

Optionally, in this application, after the terminal device does not monitor the first signaling configured by the network device, it monitors whether the second signaling configured by the network device is received, and the second signaling indicates the DMRS of the PDCCH and other reference signals. QCL relationship.

Optionally, when the terminal device monitors the foregoing second signaling, the reference signal may be determined according to the QCL relationship indicated by the second signaling, and according to the reference signal, perform S550 to perform channel on the channel corresponding to the reference signal. monitor.

Optionally, when the terminal device does not monitor the foregoing second signaling, perform S530 or perform S540. S530. The terminal device determines whether it is within a preset time window. Optionally, in this application, when the terminal device neither monitors the first signaling nor monitors the second signaling, the terminal device determines whether the time slot is within a preset time window, for example, communications. The protocol stipulates that the time window start time is the time when the RRC connection state is established, that is, the time when the terminal device receives the message 4 in the random access step, and the duration is 5 microseconds. Then, the terminal device does not monitor the first time. When the signaling does not monitor the second signaling, the terminal device determines that the time is within the time window.

Optionally, when the terminal device is in the time window that neither the first signaling nor the second signaling is monitored, proceeding to S510 and S520, the terminal device continues to monitor whether the first letter is received. Order and / or second signaling.

Optionally, when the time at which the terminal device neither monitors the first signaling nor monitors the second signaling is outside the time window, performing S540. It should be understood that the foregoing determination of the preset time window is an exemplary manner, and does not limit the protection scope of the present application, and may be any one shown in FIG. 6.

It should be understood that in the present application, S530 is an optional step.

S540. The terminal device determines a reference signal.

Optionally, when the terminal device neither monitors the foregoing first signaling nor monitors the second signaling, the time is greater than or equal to the foregoing duration of 5 microseconds, the terminal device according to the manner shown in FIG. 3 to FIG. The method of determining the reference signal determines the reference signal by any method, and performs S550, which monitors the channel quality.

At S550, the terminal device starts monitoring channel quality.

FIG. 8 is a schematic block diagram of a terminal device according to an embodiment of the present application. As shown in FIG. 8, the terminal device may include: a transceiver module 31 and a monitoring module 32.

The transceiver module 31 is configured to receive, by the terminal device, a plurality of synchronization signal blocks sent by the network device by using N channels, where each synchronization signal block corresponds to one channel, and each synchronization signal block is carried by the Corresponding channel, where N is an integer greater than or equal to 1;

Optionally, if the transceiver module 31 receives the first signaling and the second signaling, the monitoring module 32 is configured to monitor channel quality. Optionally, the monitoring module 32 determines the first signaling and/or the second signaling. A reference signal is used to monitor the channel based on the reference signal.

Optionally, if the transceiver module 31 does not receive the first signaling and the second signaling, the monitoring module 32 determines the reference signal based on any one of the terminal device determining reference signal methods shown in FIG. And monitoring channel quality according to the reference signal.

Alternatively, optionally, if the transceiver module 31 does not receive the first signaling and the second signaling in the preset time window, optionally, the monitoring module 32 determines the reference signal based on the terminal device shown in FIG. 3 to FIG. In any one of the methods, the reference signal is determined and channel quality is monitored based on the reference signal.

Optionally, the transceiver module 31 is further configured to send a channel quality recovery request to the network device if the monitoring module 32 detects that the channel quality does not meet the requirement.

It should be understood that the terminal device may correspond to a terminal device in a method for monitoring channel quality according to an embodiment of the present invention, and the terminal device may include a module for performing a method performed by a terminal device of the method for monitoring channel quality in FIGS. 3 to 5. . In addition, the modules in the terminal device and the other operations and/or functions described above are respectively used to implement the corresponding processes of the method for monitoring channel quality in FIG. 3 to FIG. 5, and are not described herein again for brevity.

FIG. 9 is another schematic block diagram of a terminal device according to an embodiment of the present application. As shown in FIG. 9, the terminal device includes a processor 501 and a transceiver 502. Optionally, the terminal device further includes a memory 503. Wherein, the processor 502, the transceiver 502 and the memory 503 communicate with each other through an internal connection path for transferring control and/or data signals, the memory 503 is for storing a computer program, and the processor 501 is used for the memory 503. The computer program is called and executed to control the transceiver 502 to send and receive signals.

When the program instructions stored in the memory 503 are executed by the processor 501, the processor 501 is configured to control the transceiver 502 to receive the reference signal, and the processor 501 is further configured to receive the first signaling and/or the transceiver at the transceiver 502. In the case of the second signaling, the quality of the channel corresponding to the reference signal is monitored based on the reference signal indicated by the first signaling and/or the second signaling; the processor 501 is configured to not receive the transceiver 502. In the case of the foregoing first signaling and the second signaling, the SS/PBCH BLOCK monitored according to the initial access of the terminal device or the SS/PBCH BLOCK monitored in at least one cycle according to the communication process between the terminal device and the network device. Or the CSI-RS determines the reference signal and monitors the channel quality of the channel corresponding to the reference signal.

The above processor 501 and memory 503 can synthesize a processing device, and the processor 501 is configured to execute the program code stored in the memory 503 to implement the above functions. In a specific implementation, the memory 503 can also be integrated in the processor 501 or independent of the processor 501. The terminal device may further include an antenna 504, configured to send the channel quality recovery request output by the transceiver 502 by using a wireless signal.

Specifically, the terminal device may correspond to a terminal device in a method for monitoring channel quality according to an embodiment of the present invention, and the terminal device may include a module for performing a method performed by a terminal device of the method for monitoring channel quality in FIGS. 3 to 5. . Moreover, the modules in the terminal device and the other operations and/or functions described above are respectively used to implement the corresponding processes in the method for monitoring channel quality in FIG. 3 to FIG. 5, specifically, the memory 503 is configured to store the program code, so that the processor 501 When the program code is executed, the transceiver 502 is controlled to perform the step of receiving the reference signal of the terminal device in the channel quality method by using the antenna 504, and the specific process of each module performing the foregoing steps has been described in detail in the method for monitoring the channel quality, in order to Concise, no longer repeat here.

The processor 501 can be used to perform the actions implemented by the terminal in the foregoing method embodiments, and the transceiver 502 can be used to perform the actions of the terminal to transmit or transmit to the network device in the foregoing method embodiments. For details, please refer to the description in the previous method embodiments, and details are not described herein again.

The above processor 501 and memory 503 can be integrated into one processing device, and the processor 501 is configured to execute the program code stored in the memory 503 to implement the above functions. In a specific implementation, the memory 503 can also be integrated in the processor 501.

The terminal device described above may also include a power source 505 for providing power to various devices or circuits in the terminal.

In addition, in order to make the function of the terminal device more perfect, the terminal device may further include one or more of an input unit 506, a display unit 507, an audio circuit 508, a camera 509, a sensor 510, and the like, and the audio circuit further A speaker 5082, a microphone 5084, and the like can be included.

FIG. 10 is a schematic block diagram of a network device according to an embodiment of the present application. As shown in FIG. 10, the network device includes a processor 610 and a transceiver 620. Optionally, the network device further includes a memory 630. Wherein, the processor 610, the transceiver 620 and the memory 630 communicate with each other through an internal connection path for transmitting control and/or data signals, the memory 630 is for storing a computer program, and the processor 610 is configured to receive from the memory 630. The computer program is called and run to control the transceiver 620 to send and receive signals. When the program instructions stored in the memory 630 are executed by the processor 610, the processor 610 is configured to control the transceiver 620 to receive the channel quality recovery request sent by the terminal device. In the present application, even if the network device does not configure the first signaling. And the second signaling, the transceiver 620 may still receive the transmitted channel quality recovery request.

The processor 610 and the memory 630 may be combined to form a processing device, and the processor 610 is configured to execute the program code stored in the memory 630 to implement the above functions. The memory 630 may also be integrated in the processor 610 or independent of the processor 610 when implemented.

The network device may further include an antenna 640 for transmitting the reference signal output by the transceiver 620.

Specifically, the network device may correspond to a network device in a method for monitoring channel quality according to an embodiment of the present invention, and the network device may include a unit of a method for performing network device execution of the method for monitoring channel quality in FIGS. 2 to 5. . Moreover, each unit in the network device 30 and the other operations and/or functions described above respectively implement a corresponding flow of the method for monitoring channel quality in FIG. 2 to FIG. 5, specifically, the memory 630 is configured to store program code, so that the processor 610, when executing the program code, controls the transceiver 620 to perform the transmission of the reference signal and the configuration of the first signaling and/or the second signaling in the monitoring channel quality method of FIGS. 2 through 5 through the antenna 640.

The application also provides a communication system comprising one or more of the aforementioned network devices, and one or more terminal devices.

It should be understood that, in the embodiment of the present application, each of the foregoing modules may be a different function of a module, or may be used in combination of multiple modules, which is not limited in this application.

It should be understood that, in the embodiments of the present application, the size of the sequence numbers of the foregoing processes does not mean the order of execution, and the order of execution of each process should be determined by its function and internal logic, and should not be implemented in the embodiment of the present application. Form any limit.

It should be understood that the processor in the embodiment of the present application may be a central processing unit (CPU), and the processor may also be other general-purpose processors, digital signal processors (DSPs), and dedicated integration. Application specific integrated circuit (ASIC), field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc. The general purpose processor may be a microprocessor or the processor or any conventional processor or the like.

It should also be understood that the memory in the embodiments of the present application may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory. The non-volatile memory may be a read-only memory (ROM), a programmable read only memory (ROMM), an erasable programmable read only memory (erasable PROM, EPROM), or an electrical Erase programmable EPROM (EEPROM) or flash memory. The volatile memory can be a random access memory (RAM) that acts as an external cache. By way of example and not limitation, many forms of random access memory (RAM) are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic randomness. Synchronous DRAM (SDRAM), double data rate synchronous DRAM (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous connection dynamic random access memory Take memory (synchlink DRAM, SLDRAM) and direct memory bus random access memory (DR RAM).

The above embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination. When implemented in software, the above-described embodiments may be implemented in whole or in part in the form of a computer program product. The computer program product comprises one or more computer instructions or computer programs. When the computer instructions or computer programs are loaded or executed on a computer, the processes or functions described in accordance with embodiments of the present application 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 a computer readable storage medium or transferred from one computer readable storage medium to another computer readable storage medium, for example, the computer instructions can be from a website site, computer, server or data center Transfer to another website site, computer, server, or data center by wire (eg, infrared, wireless, microwave, etc.). 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 contains one or more sets of available media. The usable medium can be a magnetic medium (eg, a floppy disk, a hard disk, a magnetic tape), an optical medium (eg, a DVD), or a semiconductor medium. The semiconductor medium can be a solid state hard drive.

It should be understood that the term "and/or" herein is merely an association relationship describing an associated object, indicating that there may be three relationships, for example, A and/or B, which may indicate that A exists separately, and A and B exist simultaneously. There are three cases of B alone. In addition, the character "/" in this document is usually an abbreviated form of "and/or".

Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in electronic hardware or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods to implement the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present application.

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the device and the unit described above can refer to the corresponding process in the foregoing method embodiment, and details are not described herein again.

In the several embodiments provided by the present application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, 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. In addition, 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.

The units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, 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 functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present application, which is essential or contributes to the prior art, or a part of the technical solution, may be embodied in the form of a software product, which is stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present application. The foregoing storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk, and the like, which can store program codes. .

The foregoing is only a specific embodiment of the present application, but the scope of protection of the present application is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed in the present application. It should be covered by the scope of protection of this application. Therefore, the scope of protection of the present application should be determined by the scope of the claims.

Claims

A method for monitoring channel quality, comprising:

Receiving, by the terminal device, a plurality of synchronization signal blocks sent by the network device through multiple channels during initial access;

When the terminal device does not receive the first signaling and the second signaling that are used by the network device to monitor channel quality, determine M among multiple synchronization signal blocks received in the initial access process. a synchronization signal block for performing quality monitoring on M channels corresponding to the M synchronization signal blocks; M is an integer greater than or equal to 1;

The first signaling carries an index of a channel state information reference signal CSI-RS resource that is sent by at least one period, where the CSI-RS resource is used to monitor channel quality;

The second signaling includes at least one quasi co-located QCL information index associated with a control channel demodulation reference signal, the QCL information index being used to determine a reference signal, the reference signal being used to monitor channel quality.
The method according to claim 1, wherein in the M synchronization signal blocks, the value of the M is determined according to the capability of the terminal device, or

The value of M is specified by the communication protocol, or

The value of the M is indicated by the network device.
The method according to claim 1 or 2, wherein when the value of M is 1, the method further comprises:

The terminal device uses a synchronization signal block selected in the initial access as a reference signal for the quality of the monitoring channel, and the synchronization signal block is used for association and transmission of a random access channel.
The method according to any one of claims 1 to 3, wherein the M sync signal blocks satisfy at least one of the following conditions:

The M synchronization signal blocks are M synchronization signal blocks with the highest received power of reference signals in the synchronization signal blocks corresponding to the N channels,

The M synchronization signal blocks are M synchronization signal blocks with the highest reception quality of reference signals in the synchronization signal blocks corresponding to the N channels,

The M sync signal blocks are M sync signal blocks with the highest signal to noise ratio or signal to interference and noise ratio in the sync signal block corresponding to the N channels.
A method for monitoring channel quality, comprising:

The terminal device receives multiple reference signals sent by the network device through multiple channels during P reference signal transmission periods;

When the terminal device does not receive the first signaling and the second signaling that are used by the network device to monitor channel quality, determine Q among the multiple reference signals received by the P reference signal transmission periods. a reference signal for performing quality monitoring on Q channels corresponding to the Q reference signals; P and Q are integers greater than or equal to 1;

The first signaling carries an index of a channel state information reference signal CSI-RS resource that is sent by at least one period, where the CSI-RS resource is used to monitor channel quality;

The second signaling includes at least one quasi co-located QCL information index associated with a control channel demodulation reference signal, the QCL information index being used to determine a reference signal, the reference signal being used to monitor channel quality.
The method according to claim 5, wherein the value of P is determined according to the capabilities of the terminal device, or

The value of P is specified by the communication protocol, or

The value of P is indicated by the network device.
The method according to claim 5 or 6, wherein the Q reference signals are determined from the plurality of reference signals received by the P reference signal transmission periods, and the value of the Q is according to the terminal device Ability to determine, or

The value of Q is specified by a communication protocol, or

The value of Q is indicated by the network device.
The method according to any one of claims 5 to 7, wherein the Q reference signals satisfy at least one of the following conditions:

The Q reference signals are Q reference signals with the highest received power of reference signals among the reference signals corresponding to the N channels,

The Q reference signals are Q reference signals with the highest received quality of reference signals among the reference signals corresponding to the N channels,

The Q reference signals are Q reference signals with the highest signal to noise ratio or signal to interference and noise ratio among the reference signals corresponding to the N channels.
A method for monitoring channel quality, comprising:

The terminal device detects whether the preset condition is met;

When the preset condition is met, the terminal device performs channel quality monitoring;

The preset condition includes at least one of the following conditions:

a first condition: the terminal device receives the first signaling sent by the network device, where the first signaling includes an index of a channel state information reference signal CSI-RS resource that is sent by at least one period, where the CSI-RS resource is used. For monitoring channel quality,

a second condition: the terminal device does not receive the first signaling, and the terminal device receives the second signaling sent by the network device, where the second signaling includes at least one demodulation reference signal with the control channel An associated quasi-co-located QCL information index, the QCL information index being used to determine a reference signal, the reference signal being used to monitor channel quality,

a third condition: the first signaling and the second signaling are not received within a specified time window, and the terminal device supports a synchronization signal block received based on the initial access or before a specified time window The reference signals transmitted in P cycles perform channel quality monitoring.
The method of claim 9 wherein the method further comprises:

Receiving, by the terminal device, first indication information that is sent by the network device, where the first indication information is used to indicate a start time of the time window, or

The moment when the first indication information is received is the start time of the time window.
The method according to claim 9 or 10, wherein the method further comprises:

The terminal device determines a start time of the time window according to a sending period of the uplink information.
A terminal device, comprising: a transceiver and a processor, wherein

The transceiver is configured to receive, by the terminal device, a plurality of synchronization signal blocks sent by the network device by using multiple channels when initially accessing;

The processor is configured to: when the transceiver does not receive the first signaling and the second signaling sent by the network device for monitoring channel quality, multiple synchronization signals received from the initial access process M synchronization signal blocks are determined in the block to perform quality monitoring on M channels that are in one-to-one correspondence with the M synchronization signal blocks; and M is an integer greater than or equal to 1;

The first signaling carries an index of a channel state information reference signal CSI-RS resource that is sent by at least one period, the CSI-RS resource is used to monitor channel quality, and the second signaling includes at least one and a control channel. Demodulating a quasi-co-located QCL information index associated with the reference signal, the QCL information index being used to determine a reference signal for monitoring channel quality.
The terminal device according to claim 12, wherein, among the M synchronization signal blocks, the value of the M is determined according to the capability of the terminal device, or

The value of M is specified by the communication protocol, or

The value of the M is indicated by the network device.
The terminal device according to claim 12 or 13, wherein when the value of the M is 1, the processor is specifically configured to: use, as the synchronization signal block selected by the terminal device in the initial access, A reference signal that monitors channel quality, the synchronization signal block being used for association and transmission of random access channels.
The terminal device according to any one of claims 12 to 14, wherein the M sync signal blocks satisfy at least one of the following conditions:

The M synchronization signal blocks are M synchronization signal blocks with the highest received power of reference signals in the synchronization signal blocks corresponding to the N channels,

The M synchronization signal blocks are M synchronization signal blocks with the highest reception quality of reference signals in the synchronization signal blocks corresponding to the N channels,

The M sync signal blocks are M sync signal blocks with the highest signal to noise ratio or signal to interference and noise ratio in the sync signal block corresponding to the N channels.
A terminal device, comprising: a transceiver and a processor, wherein

The transceiver is configured to receive, by using a plurality of channels, a plurality of reference signals sent by the network device during a P reference signal transmission period;

The processor is configured to: when the transceiver does not receive the first signaling and the second signaling that are used by the network device to monitor channel quality, receive multiple times from the P reference signal sending period Determining Q reference signals in the reference signal to perform quality monitoring on Q channels corresponding to the Q reference signals; P and Q are integers greater than or equal to 1;

The first signaling carries an index of a channel state information reference signal CSI-RS resource that is sent by at least one period, where the CSI-RS resource is used to monitor channel quality;

The second signaling includes at least one quasi co-located QCL information index associated with a control channel demodulation reference signal, the QCL information index being used to determine a reference signal, the reference signal being used to monitor channel quality.
The terminal device according to claim 16, wherein the value of the P is determined according to the capability of the terminal device, or

The value of P is specified by the communication protocol, or

The value of P is indicated by the network device.
The terminal device according to claim 16 or 17, wherein the Q reference signals are determined from the plurality of reference signals received by the P reference signal transmission periods, and the value of the Q is according to the terminal The capabilities of the equipment are determined, or

The value of P is specified by the communication protocol, or

The value of P is indicated by the network device.
The terminal device according to any one of claims 16 to 18, wherein the Q reference signals satisfy at least one of the following conditions:

The Q reference signals are Q reference signals with the highest received power of reference signals among the reference signals corresponding to the N channels,

The Q reference signals are Q reference signals with the highest received quality of reference signals among the reference signals corresponding to the N channels,

The Q reference signals are Q reference signals with the highest signal to noise ratio or signal to interference and noise ratio among the reference signals corresponding to the N channels.
A terminal device, comprising: a transceiver and a processor, wherein

The processor is configured to detect whether a preset condition is met;

The processor is specifically configured to perform channel quality monitoring when the preset condition is met;

The preset condition includes at least one of the following conditions:

a first condition: the terminal device receives the first signaling sent by the network device, where the first signaling includes an index of a CSI-RS resource that is sent in at least one period, where the CSI-RS resource is used to monitor channel quality, a second condition: the terminal device does not receive the first signaling, and the terminal device receives the second signaling sent by the network device, where the second signaling includes at least one demodulation reference signal with the control channel An associated quasi-co-located QCL information index, the QCL information index being used to determine a reference signal, the reference signal being used to monitor channel quality,

a third condition: the first signaling and the second signaling are not received within a specified time window, and the terminal device supports a synchronization signal block received based on the initial access or before a specified time window The reference signals transmitted in P cycles perform channel quality monitoring.
The terminal device according to claim 20, wherein the transceiver is configured to receive first indication information sent by the network device, where the first indication information is used to indicate a start time of the time window, or ,

The moment when the first indication information is received is the start time of the time window.
The terminal device according to claim 20 or 21, wherein the processor is specifically configured to determine a starting time of the time window according to a sending period of the uplink information.
A chip system, comprising:

A processor for calling and running a computer program from a memory, such that the device in which the chip system is installed performs the method of any one of claims 1 to 11.
A terminal device, comprising:

a transceiver module, configured to receive, by using a plurality of channels, a plurality of synchronization signal blocks sent by the network device when the terminal device is initially accessed;

a processing module, configured to: when the transceiver module does not receive the first signaling and the second signaling sent by the network device for monitoring channel quality, multiple synchronization signals received from the initial access process M synchronization signal blocks are determined in the block to perform quality monitoring on M channels corresponding to the M synchronization signal blocks; M is an integer greater than or equal to 1;

The first signaling carries an index of a channel state information reference signal CSI-RS resource that is sent by at least one period, where the CSI-RS resource is used to monitor channel quality;

The second signaling includes at least one quasi co-located QCL information index associated with a control channel demodulation reference signal, the QCL information index being used to determine a reference signal, the reference signal being used to monitor channel quality.
A terminal device, comprising:

a transceiver module, configured to receive, by using multiple channels, a plurality of reference signals sent by the network device during a P reference signal transmission period;

a processing module, configured to: when the transceiver module does not receive the first signaling and the second signaling that are used by the network device to monitor channel quality, receive multiple times from the P reference signal sending period Determining Q reference signals in the reference signal to perform quality monitoring on Q channels corresponding to the Q reference signals; P and Q are integers greater than or equal to 1;

The first signaling carries an index of a channel state information reference signal CSI-RS resource that is sent by at least one period, where the CSI-RS resource is used to monitor channel quality;

The second signaling includes at least one quasi co-located QCL information index associated with a control channel demodulation reference signal, the QCL information index being used to determine a reference signal, the reference signal being used to monitor channel quality.
A terminal device, comprising:

a processing module, configured to detect whether the preset condition is met;

The processing module is specifically configured to perform channel quality monitoring when the preset condition is met;

The preset condition includes at least one of the following conditions:

a first condition: the transceiver module receives the first signaling sent by the network device, where the first signaling includes an index of CSI-RS resources that are sent in at least one period, where the CSI-RS resources are used to monitor channel quality,

a second condition: the transceiver module does not receive the first signaling, and the transceiver module receives the second signaling sent by the network device, where the second signaling includes at least one demodulation reference signal with the control channel An associated quasi-co-located QCL information index, the QCL information index being used to determine a reference signal, the reference signal being used to monitor channel quality,

a third condition: the transceiver module does not receive the first signaling and the second signaling within a specified time window, and the terminal device supports a synchronization signal block received based on an initial access or in a specified The reference signal transmitted in P cycles before the time window performs channel quality monitoring.
A network device, comprising:

a processing module, configured to determine a plurality of synchronization signal blocks;

a transceiver module, configured to send the multiple synchronization signal blocks to the terminal device through multiple channels when the terminal device initially accesses;

When the terminal device does not receive the first signaling and the second signaling for monitoring channel quality sent by the transceiver module, M synchronization signal blocks of the plurality of synchronization signal blocks are used for Mass monitoring of M channels corresponding to M sync signal blocks; M is an integer greater than or equal to 1;

The first signaling carries an index of a channel state information reference signal CSI-RS resource that is sent by at least one period, where the CSI-RS resource is used to monitor channel quality;

The second signaling includes at least one quasi co-located QCL information index associated with a control channel demodulation reference signal, the QCL information index being used to determine a reference signal, the reference signal being used to monitor channel quality.
A network device, comprising:

a processing module, configured to determine a plurality of synchronization signal blocks;

a transceiver module, configured to send the multiple reference signals to the terminal device through multiple channels during P reference signal transmission periods;

When the terminal device does not receive the first signaling and the second signaling for monitoring channel quality sent by the transceiver module, Q reference signals of the plurality of reference signals are used for the Q Quality control of Q channels corresponding to one-to-one reference signals; P and Q are integers greater than or equal to 1;

The first signaling carries an index of a channel state information reference signal CSI-RS resource that is sent by at least one period, where the CSI-RS resource is used to monitor channel quality;

The second signaling includes at least one quasi co-located QCL information index associated with a control channel demodulation reference signal, the QCL information index being used to determine a reference signal, the reference signal being used to monitor channel quality.
A computer readable storage medium comprising a computer program, when executed on a computer, causing the computer to perform the method of monitoring channel quality as claimed in any one of claims 1 to 11.
A computer program product comprising: a computer program, when the computer program is executed, causing a computer to perform the method of monitoring channel quality according to any one of claims 1 to 11.