Communication method and apparatus

Abstract

Embodiments of the present application provide a communication method and device. The method comprises: configuring at least one frequency resource group, wherein each frequency resource group comprises one or more frequency resources; sending indication information of the at least one frequency resource group to a terminal device; using at least one beam to send a downlink signal on the frequency resources corresponding to the at least one frequency resource group; and receiving information from the terminal device indicating whether the frequency resources of the at least one frequency resource group have quasi co-located (QCL) relationship. Correspondingly, a corresponding device is also disclosed. With the frequency resource configuration scheme, through information interaction between the network device and the terminal device, a specific frequency resource grouping for each terminal device is realized, so that the frequency resources in each frequency resource group are QCL for a terminal device, so that the network device can serve the terminal device using the frequency resource grouping.

Description

[0001] This application is a divisional application of the original application with the application number 201710684270.2 and the original filing date of August 11, 2017, and the entire contents of the original application are incorporated herein by reference. TECHNICAL FIELD

[0002] The present application relates to the field of communication technology, and in particular to a communication method and device. BACKGROUND

[0003] The network device uses the frequency resource aggregation technology, which can allow multiple frequency resources to serve one terminal device, greatly increasing the bandwidth and thus improving the transmission rate. Quasi co-location (QCL) relationship refers to that multiple resources have one or more same or similar communication characteristics.

[0004] On adjacent multiple frequency resources, two antenna ports can have a QCL relationship with respect to at least one of delay spread, Doppler spread, Doppler shift, average delay, and spatial domain parameters. For example, for spatial domain parameters, as shown in a received power angle of arrival (AOA) distribution diagram Figure 1a , the received power AOA distribution of multiple frequency resources is very similar, and it can be considered that the spatial QCL relationship exists between the two frequency resources. In this way, the communication characteristics of one frequency resource can be considered to serve the communication of multiple frequency resources, thereby saving the delay and overhead caused by managing each frequency resource. However, adjacent multiple frequency resources can also not have a spatial QCL relationship, such as another received power AOA distribution diagram Figure 1b , the received power AOA distribution of multiple frequency resources has a low similarity. At this time, each frequency resource may need to be managed separately. Whether adjacent multiple frequency resources have a QCL relationship is related to multiple factors. Using the QCL relationship to configure the frequency resources is beneficial to improve the accuracy of the frequency resource configuration, but there is no scheme in the prior art for how to determine the QCL relationship of the frequency resources to configure the frequency resources.

[0005] Therefore, how the network device configures the frequency resources is a problem to be solved. SUMMARY

[0006] The present application provides a communication method and device to determine the quasi co-location relationship between frequency resources, and thus configure the frequency resources according to the quasi co-location relationship.

[0007] In an aspect of the present disclosure, a communication method is provided, including: configuring, by a network device, at least one frequency resource group, wherein each frequency resource group includes one or more frequency resources; sending, by the network device, indication information of the at least one frequency resource group to a terminal device; sending, by the network device, a downlink signal on a frequency resource corresponding to the at least one frequency resource group using at least one beam; and receiving, by the network device, information from the terminal device indicating whether a plurality of frequency resources of the at least one frequency resource group have quasi-co-located (QCL) relationship. In this implementation, through information interaction between the network device and the terminal device, a frequency resource group specific to each terminal device is configured, so that the frequency resources in each frequency resource group have QCL relationship for one terminal device, and thus the network device can serve the terminal device using the frequency resource group.

[0008] In a possible implementation, before the network device configures the at least one frequency resource group, the method further includes: obtaining, by the network device, information of one or more frequency resources supported by the terminal device. In this implementation, the network device obtains the frequency resource aggregation capability of the terminal device before configuring the frequency resource group, so that the frequency resource group can be configured specifically, and the efficiency of frequency resource configuration is improved.

[0009] In another possible implementation, the method further includes: notifying, by the network device, the terminal device of the updated frequency resource group. In this implementation, if the frequency resource group configured by the network device is updated, the terminal device needs to be notified, and the terminal device needs to determine the QCL relationship of the frequency resources in each frequency resource group again. After the terminal device reports the QCL relationship, for the frequency resource group configured by the network device originally, the frequency resource group also needs to be updated, and the terminal device also needs to be notified of the updated frequency resource group.

[0010] In yet another possible implementation, the method further includes: configuring, by the network device, a primary frequency resource for the terminal device. In this implementation, the network device determines whether to reconfigure the primary frequency resource for the terminal device according to the beam quality of the frequency resource reported by the terminal device and the like.

[0011] In another aspect of the present application, a communication method is provided, comprising: a terminal device receiving indication information of at least one frequency resource group from a network device, each frequency resource group comprising one or more frequency resources; the terminal device receiving a downlink signal from the network device through at least one beam, the downlink signal being transmitted on the frequency resources corresponding to the at least one frequency resource group; the terminal device measuring the downlink signal; and the terminal device reporting indication information of whether multiple frequency resources in the at least one frequency resource group have a QCL relationship. In this implementation, through information interaction between the network device and the terminal device, a frequency resource group specific to each terminal device is realized, so that the frequency resources in each frequency resource group are QCL for one terminal device, so that the network device can serve the terminal device using the frequency resource group.

[0012] In a possible implementation, before the terminal device receives the indication information of at least one frequency resource group from the network device, the method further comprises: the terminal device sending information of one or more frequency resources supported by the terminal device to the network device. In this implementation, the terminal device reports its frequency resource aggregation capability to the network device before the network device configures the frequency resource group, so that the frequency resource group can be configured specifically, improving the efficiency of frequency resource configuration.

[0013] In another possible implementation, the terminal device measuring the downlink signal comprises: the terminal device measuring at least one of the following information of the downlink signal: beam indication information, quality information of the downlink signal associated with the at least one frequency resource, and channel large-scale characteristics of the antenna port.

[0014] In yet another possible implementation, the method further comprises: the terminal device receiving an updated frequency resource group notified by the network device. In this implementation, if the frequency resource group configured by the network device is updated, the terminal device needs to be notified, and the terminal device needs to determine the QCL relationship of the frequency resources in each frequency resource group again. After the terminal device reports the QCL relationship, for the frequency resource group configured by the network device originally, the frequency resource group also needs to be updated, and the terminal device also needs to be notified of the updated frequency resource group information.

[0015] In yet another possible implementation, the method further includes: the terminal device obtaining synchronization information corresponding to one frequency resource in each frequency resource group according to the indication information of whether multiple frequency resources in the at least one frequency resource group have QCL relationship; and the synchronization information includes uplink synchronization information and / or downlink synchronization information. In this implementation, for the frequency resources that have QCL relationship, only the uplink and downlink synchronization information of one frequency resource needs to be obtained. Especially for the frequency resources that have QCL relationship with the primary frequency resource, the uplink and downlink synchronization information required for uplink and downlink synchronization on the frequency resource can be omitted.

[0016] In yet another possible implementation, the method further includes: the terminal device activating the secondary frequency resources for data transmission according to the indication information of whether the primary frequency resource has QCL relationship with the multiple secondary frequency resources after receiving the indication of activating the secondary frequency resources from the network device. In this implementation, for the secondary frequency resources that have QCL relationship with the primary frequency resource, the secondary frequency resources can be directly used for data transmission, and there is no need to wait for 8 subframes of time after receiving the activation indication, so that the utilization rate of frequency resources can be improved.

[0017] Correspondingly, the present application also provides a communication apparatus that can implement the above communication method. For example, the communication apparatus can be a chip (such as a baseband chip or a communication chip) or a network device. The above method can be implemented by software, hardware, or by executing corresponding software by hardware.

[0018] In a possible implementation, the structure of the communication apparatus includes a processor and a memory; the processor is configured to support the apparatus to perform the corresponding functions in the above communication method. The memory is used to couple with the processor, and stores the necessary programs (instructions) and / or data of the apparatus. Optionally, the communication apparatus can also include a communication interface for supporting the communication between the apparatus and other network elements.

[0019] In another possible implementation, the communication apparatus can include a processing unit, a sending unit and a receiving unit. The processing unit is configured to configure at least one frequency resource group, wherein each frequency resource group includes one or more frequency resources; the sending unit is configured to send indication information of the at least one frequency resource group to a terminal device; the sending unit is further configured to send downlink signals on the frequency resources corresponding to the at least one frequency resource group using at least one beam; and the receiving unit is configured to receive information from the terminal device for indicating whether multiple frequency resources in the at least one frequency resource group have QCL relationship.

[0020] Optionally, the receiving unit is further configured to acquire information of one or more frequency resources supported by the terminal device.

[0021] Optionally, the sending unit is further configured to notify the terminal device of the updated frequency resource group.

[0022] Optionally, the processing unit is further configured to configure a primary frequency resource for the terminal device.

[0023] When the communication apparatus is a chip, the sending unit can be an output unit, such as an output circuit or a communication interface; the receiving unit can be an input unit, such as an input circuit or a communication interface. When the communication apparatus is a network device, the sending unit can be a transmitter or a transmitter; the receiving unit can be a receiver or a receiver.

[0024] Another aspect of the present application also provides a communication apparatus, which can implement the above communication method. For example, the communication apparatus can be a chip (such as a baseband chip, or a communication chip, etc.) or a terminal device, which can implement the above method through software, hardware, or through hardware executing corresponding software.

[0025] In a possible implementation, the structure of the communication apparatus includes a processor and a memory; the processor is configured to support the apparatus to perform corresponding functions in the above communication method. The memory is used to be coupled with the processor, and stores necessary programs (instructions) and data of the apparatus. Optionally, the communication apparatus can further include a communication interface for supporting communication between the apparatus and other network elements.

[0026] In another possible implementation, the communication apparatus can include a receiving unit, a processing unit and a sending unit. The processing unit is configured to implement the measurement function in the above method, and the receiving unit and the sending unit are respectively configured to implement the receiving and sending functions in the above method. For example, the receiving unit is configured to receive indication information of at least one frequency resource group from a network device, each frequency resource group including one or more frequency resources; the receiving unit is further configured to receive a downlink signal from the network device through at least one beam, the downlink signal being transmitted on a frequency resource corresponding to the at least one frequency resource group; the processing unit is configured to measure the downlink signal; and the sending unit is configured to report indication information of whether multiple frequency resources in the at least one frequency resource group have a QCL relationship.

[0027] Optionally, the sending unit is further configured to send information of one or more frequency resources supported by the terminal device to the network device.

[0028] Optionally, the processing unit is specifically configured to measure at least one of the following information of the downlink signal: beam indication information, quality information of the downlink signal associated with the at least one frequency resource, channel large-scale characteristics of an antenna port.

[0029] Optionally, the receiving unit is further configured to receive the updated frequency resource group notified by the network device.

[0030] Optionally, the receiving unit is further configured to acquire synchronization information corresponding to one of the frequency resources in each frequency resource group according to indication information of whether the plurality of frequency resources in the at least one frequency resource group have QCL relationship; wherein the synchronization information includes uplink synchronization information and / or downlink synchronization information.

[0031] Optionally, the processing unit is further configured to activate the secondary frequency resource for data transmission after receiving an indication of activating the secondary frequency resource from the network device according to indication information of whether the primary frequency resource and the plurality of secondary frequency resources have QCL relationship.

[0032] When the communication apparatus is a chip, the receiving unit can be an input unit such as an input circuit or a communication interface; and the sending unit can be an output unit such as an output circuit or a communication interface. When the communication apparatus is a terminal device, the receiving unit can be a receiver (also referred to as a receiver); and the sending unit can be a transmitter (also referred to as a transmitter).

[0033] In combination with the above aspects, in a possible implementation, the frequency resource is a carrier component (CC) or a bandwidth part (BP).

[0034] In combination with the above aspects, in another possible implementation, the indication information of the at least one frequency resource group specifically includes at least one of the following information: an identifier of the at least one frequency resource group, and an identifier of one or more frequency resources included in each frequency resource group.

[0035] In combination with the above aspects, in yet another possible implementation, the indication information of whether the one or more frequency resources of the at least one frequency resource group have QCL relationship specifically includes at least one of the following information: an identifier of the at least one frequency resource group, an identifier of the one or more frequency resources, the beam indication information, quality information of the downlink signal associated with the at least one frequency resource, channel large-scale characteristics of an antenna port, and relevance information of the at least one frequency resource.

[0036] In combination with the above aspects, in yet another possible implementation, the downlink signal is a synchronization signal block or a channel state information downlink signal.

[0037] In combination with the above aspects, in yet another possible implementation, the indication information of whether the plurality of frequency resources of the at least one frequency resource group have the QCL relationship is also used to indicate indication information of whether the one or more beams have the QCL relationship, the one or more beams being beams for transmitting or receiving the plurality of frequency resources of the at least one frequency resource group.

[0038] Another aspect of the present application provides a computer readable storage medium, which stores instructions, when the instructions are run on a computer, cause the computer to perform the method of the above aspects.

[0039] Another aspect of the present application provides a computer program product comprising instructions, when the instructions are run on a computer, cause the computer to perform the method of the above aspects.

[0040] In addition, in order to improve the transmission rate and efficiency of the wireless communication system, in the fifth generation new radio (5G NR) communication system, the network device and the terminal device communicate with each other by using beams, and the beams have the characteristic that the energy of the signals is concentrated in a certain direction. The network device and the terminal device can generate beams by using beamforming technology, and the beamforming technology specifically includes digital beamforming technology, analog beamforming technology and hybrid beamforming technology. This beam communication method can effectively enhance the anti-interference ability of the signals, thereby achieving higher transmission rate and efficiency. The complex channel environment between the network device and the terminal device can cause the communication to fail, and therefore it is necessary to quickly and accurately detect the beam failure. How to detect the beam failure is a hot research topic at present.

[0041] Another embodiment of the present application aims to provide a communication method, which can quickly detect the beam failure.

[0042] In one aspect, the present application provides a communication method, which includes: a network device configuring at least one frequency resource group, each frequency resource group including at least two frequency resources; the network device sending configuration information of the at least one frequency resource group to a terminal device, the configuration information including information for indicating that the frequency resources in each frequency resource group have a quasi-co-location (QCL) relationship; and the network device transmitting a downlink signal on the frequency resources corresponding to the at least one frequency resource group by using at least one beam, wherein one frequency resource corresponds to one beam.

[0043] The frequency resource represents a resource in a frequency domain used for transmitting data, for example, the frequency resource can be a carrier component (CC) or a bandwidth part (BP). The QCL relationship means that multiple antenna ports have at least one same or similar communication characteristic, for example, the QCL relationship between carrier component 1 and carrier component 2 means that the antenna port for transmitting carrier component 1 and the antenna port for transmitting carrier component 2 have a QCL relationship; for another example, the QCL relationship between beam 1 and beam 2 means that the antenna port of the downlink signal corresponding to beam 1 and the antenna port of the downlink signal corresponding to beam 2 have a QCL relationship. For multiple frequency resources having a QCL relationship, especially multiple frequency resources having a spatial QCL relationship, the same or similar configuration can be used. The network device can use at least one beam to transmit one or more downlink signals on each frequency resource in the frequency resource group, and the downlink signal includes but is not limited to at least one of a channel state information-reference signal (CSI-RS) and a synchronization signal block (SS block). The configuration information can be sent through a radio resource control (RRC) message, a media access control-control element (MAC-CE) message, or a downlink control information (DCI) message.

[0044] In the implementation of the embodiment of the application, the network device sends configuration information indicating that the frequency resource group has a QCL relationship to the terminal device, and sends a downlink signal on the frequency resource group, so that the terminal device can measure the downlink signal on multiple frequency resources having a QCL relationship according to the QCL relationship of the frequency resource group, thereby obtaining more measurement opportunities, and effectively improving the accuracy of beam detection and reducing the detection time relative to single-carrier beam detection.

[0045] In a possible design, the configuration information further includes at least one of a first-stage count value and a first-stage time window of the frequency resource group, and / or at least one of a first-stage count value and a first-stage time window of each frequency resource in the frequency resource group.

[0046] In a possible design, the configuration information further includes at least one of a second-stage count value and a second-stage time window of the frequency resource group, and / or at least one of a second-stage count value and a second-stage time window of each frequency resource in the frequency resource group.

[0047] The first-stage count value is a count value set for the beam detection stage, and the second-stage count value is a count value set for the beam recovery stage. The first-stage time window and the second-stage time window are a time interval, the first-stage time window is a time window set for the beam detection stage, and the second-stage time window is a time window set for the beam recovery stage.

[0048] In a possible design, the configuration information further includes a timing duration of the frequency resource group and a timing duration of each frequency resource in the frequency resource group.

[0049] In a possible design, the configuration information further includes an identifier of the frequency resource group, an identifier of a reference frequency resource in the frequency resource group, an identifier of each frequency resource in the frequency resource group, a mapping relationship between the frequency resources and the beams in the frequency resource group, and beam indication information of at least one beam associated with each frequency resource in the frequency resource group.

[0050] The reference frequency resource is one frequency resource in the frequency resource group. For example, when the frequency resource is a carrier component, the reference carrier component is a primary carrier component in the carrier component group. In the case where there is no primary carrier component in the carrier component group, the network device specifies a secondary carrier component as the reference carrier component. Each frequency resource in the frequency resource group is associated with at least one beam, and at least two frequency resources in the frequency resource group have a QCL relationship, which means that any one beam associated with a frequency resource has a QCL relationship with any one beam associated with another frequency resource. For example, the frequency resource group includes frequency resource 1 and frequency resource 2, frequency resource 1 is associated with beam 11 and beam 12, frequency resource 2 is associated with beam 21 and beam 22, and frequency resource 1 and frequency resource 2 have a QCL relationship, which means that beam 11 and beam 21 have a QCL relationship, or beam 11 and beam 22 have a QCL relationship, or beam 12 and beam 21 have a QCL relationship, or beam 12 and beam 22 have a QCL relationship. The beam indication information is used to represent the identification of the beam, different beams have different beam indication information, and the beam indication information includes at least one of the beam number, the downlink signal resource number, the absolute index of the beam, the relative index of the beam, the logical index of the beam, the index of the antenna port corresponding to the beam, the antenna port group index corresponding to the beam, the index of the downlink signal corresponding to the beam, the time index of the downlink synchronization signal block corresponding to the beam, the beam pair link (BPL) information, the transmission parameter (Tx parameter) corresponding to the beam, the reception parameter (Rx parameter) corresponding to the beam, the transmission weight corresponding to the beam, the weight matrix corresponding to the beam, the weight vector corresponding to the beam, the reception weight corresponding to the beam, the index of the transmission weight corresponding to the beam, the index of the weight matrix corresponding to the beam, the index of the weight vector corresponding to the beam, the index of the reception weight corresponding to the beam, the reception codebook corresponding to the beam, the transmission codebook corresponding to the beam, the index of the reception codebook corresponding to the beam, and the index of the transmission codebook corresponding to the beam. The downlink signal includes any one of the channel state information reference signal (CSI-RS), the cell specific reference signal (CS-RS), and the user equipment specific reference signal (US-RS). Optionally, the network device can also assign a QCL identifier to the beams having a QCL relationship among the beams associated with the frequency resource group to represent the beams having a QCL relationship in the frequency resource group.

[0051] In a possible design, the configuration information further includes at least one of an antenna port number of the downlink signal on each frequency resource in the frequency resource group, a time-frequency resource location, and a period.

[0052] The configurations of the downlink signals on different frequency resources can be same or different, for example, the periods of the downlink signals on different frequency resources are different.

[0053] In a possible design, all beams associated with the frequency resource group have a QCL relationship.

[0054] In a possible design, the configuration information further includes QCL information of a beam having a QCL relationship in the beams associated with the frequency resource group and a QCL identifier of the beam having the QCL relationship in the beams associated with the frequency resource group.

[0055] In a second aspect, the present application provides a method for communication, including: a terminal device receiving configuration information of at least one frequency resource group from a network device, and receiving a downlink signal on frequency resources corresponding to the at least one frequency resource group through at least one beam; wherein each frequency resource group includes at least two frequency resources, each frequency resource is associated with at least one beam, and the configuration information includes information indicating that the frequency resources in each frequency resource group have a quasi-co-location (QCL) relationship; and the terminal device monitoring the downlink signal.

[0056] In a possible design, the configuration information includes at least one of a first-stage count value N1 and a first-stage time window W1 associated with the frequency resource group, the frequency resource group being any one of the at least one frequency resource;

[0057] The terminal device monitors the downlink signal, specifically including:

[0058] In a case where the beam quality is detected to be poor for N1 times continuously, it is determined that the beam associated with the frequency resource group fails; or

[0059] In a case where a signal quality parameter of the downlink signal of the frequency resource group is detected to be less than a preset threshold within the first-stage time window W1, it is determined that the beam associated with the frequency resource group fails; or

[0060] In a case where the beam quality is detected to be poor for N1 times continuously within the first-stage time window W1, it is determined that the beam associated with the frequency resource group fails; or

[0061] In a case where the signal quality parameter of the downlink signal of the frequency resource group is detected to be less than the preset threshold for N1 times continuously within the first-stage time window W1, it is determined that the beam associated with the frequency resource group fails.

[0062] Each frequency resource within a frequency resource group is configured with a downlink signal. Terminal devices monitor the beam by monitoring all downlink signals corresponding to the frequency resource group. These downlink signals include CSI-RS or SS blocks. The physical layer of the terminal device measures the signal quality parameters of the downlink signals. If the signal quality parameters are greater than a first threshold, the beam quality is determined to be poor; if the signal quality parameters are less than a second threshold, the beam quality is determined to be good. A beam failure associated with a frequency resource group indicates that one or more beams within the frequency resource group have failed.

[0063] In one possible design, beam failure associated with a frequency resource group specifically refers to beam failure within the frequency resource group that has a QCL relationship.

[0064] In one possible design, the configuration information further includes at least one of the second-stage count value N2 and the second-stage time window W2 associated with the frequency resource group.

[0065] In one possible design, the method further includes:

[0066] If good beam quality is detected N2 times consecutively, it is determined that the beam recovery associated with the frequency resource group is successful; or

[0067] If, during the second time window W2, the signal quality parameter of the downlink signal of the frequency resource group is detected to be greater than a preset threshold, it is determined that the beam recovery associated with the frequency resource group is successful; or

[0068] If good beam quality is detected N2 times within the second-stage time window W2, it is determined that the beam recovery associated with the frequency resource group is successful; or

[0069] If the signal quality parameter of the downlink signal of the frequency resource group is greater than a preset threshold within N2 consecutive second-stage time windows W2, it is determined that the beam recovery associated with the frequency resource group is successful; or

[0070] When a terminal device receives a beam recovery response from a network device, it determines that the beam recovery associated with the frequency resource group is successful, wherein the beam recovery response carries beam indication information.

[0071] In one possible design, the configuration information further includes: a timing duration T1 associated with the frequency resource group; the method further includes: initiating a timing operation with a timing duration of T1 in the event of a beam failure in the frequency resource group; stopping the timing operation with a timing duration of T1 in the event of a successful recovery of the beam associated with the frequency resource group; and determining that the beam associated with the frequency resource group has failed in the event of a timeout ...

[0072] In a possible design, the configuration information includes at least one of a first-stage count value N1 and a time window W1 associated with a reference frequency resource, and an identifier of the reference frequency resource, where the reference frequency resource is located in any one of the at least one frequency resource group;

[0073] The terminal device monitors the downlink signal, and specifically includes:

[0074] In a case where N1 times of poor beam quality are continuously detected on the reference frequency resource, it is determined that the beam associated with the reference frequency resource fails; or

[0075] In a case where a signal quality parameter of the downlink signal of the reference frequency resource is detected to be less than a preset threshold within the first-stage time window W1, it is determined that the beam associated with the reference frequency resource fails; or

[0076] In a case where N1 times of poor beam quality are continuously detected on the reference frequency resource within the first-stage time window W1, it is determined that the beam associated with the reference frequency resource fails; or

[0077] In a case where N1 times of a signal quality parameter of the downlink signal of the reference frequency resource within the first-stage time window W1 is continuously detected to be less than a threshold, it is determined that the beam associated with the reference frequency resource fails.

[0078] In a possible design, the configuration information further includes at least one of a second-stage count value N2 and a second-stage time window W2 associated with the reference frequency resource.

[0079] In a possible design, the method further includes:

[0080] In a case where N2 times of good beam quality are continuously detected on the reference frequency resource, it is determined that the beam associated with the reference frequency resource recovers successfully; or

[0081] In a case where a signal quality parameter of the reference frequency resource is detected to be greater than a preset threshold in the second-stage time window W2, it is determined that the beam associated with the reference frequency resource recovers successfully; or

[0082] In a case where N2 times of good beam quality are detected on the reference frequency resource within the second-stage time window W2, it is determined that the beam associated with the reference frequency resource recovers successfully; or

[0083] In a case where N2 times of a signal quality parameter of the frequency resource group within the second-stage time window W2 is continuously detected to be greater than a preset threshold, it is determined that the beam associated with the reference frequency resource recovers successfully; or

[0084] The terminal device receives a beam recovery response sent by the network device, judges that the reference frequency resource is associated with a successful beam recovery, and the beam recovery response carries beam indication information.

[0085] In a possible design, the configuration information further includes a timing duration T1 associated with the reference frequency resource, and the method further includes: starting a timing operation with a timing duration of T1 in a case where the beam associated with the reference frequency resource fails; stopping the timing operation with the timing duration of T1 in a case where the beam associated with the reference frequency resource recovers successfully; and judging that the beam associated with the reference frequency resource fails to recover in a case where the timing operation times out.

[0086] In a possible design, the configuration information further includes at least one of a first-stage count value and a first-stage time window of each frequency resource in the frequency resource group, and at least one of a second-stage count value and a second-stage time window of each frequency resource in the frequency resource group.

[0087] In a possible design, the configuration information further includes a timing duration of each frequency resource in the frequency resource group.

[0088] In a possible design, the configuration information further includes:

[0089] an identifier of the frequency resource group, an identifier of the reference frequency resource in the frequency resource group, an identifier of each frequency resource in the frequency resource group, a mapping relationship between the frequency resources and the beams in the frequency resource group, and beam indication information of at least one beam associated with each frequency resource in the frequency resource group, the beam indication information including at least one of a beam number and a downlink signal resource number.

[0090] In a possible design, the configuration information further includes at least one of an antenna port number, a time-frequency resource location, and a period of a downlink signal on each frequency resource in the frequency resource group.

[0091] In a possible design, the configuration information further includes: QCL information of a beam having a QCL relationship in the beams associated with the frequency resource group, and a QCL identifier of the beam having the QCL relationship in the beams associated with the frequency resource group.

[0092] In a third aspect, the present application provides a method for communication, comprising: receiving configuration information of at least one frequency resource group, and receiving a downlink signal on a frequency resource corresponding to the at least one frequency resource group through at least one beam; wherein each frequency resource group comprises at least two frequency resources, the configuration information comprises an identifier of each frequency resource group and an identifier of each frequency resource; and in a case where a beam failure associated with a first frequency resource in the frequency resource group is detected according to the downlink signal, sending a beam recovery request on a second frequency resource in the frequency resource group, the frequency resource group being any one of the at least one frequency resource group.

[0093] In a possible design, the configuration information comprises an association relationship between a beam in a frequency resource group and a transmission resource corresponding to a plurality of frequency resources, wherein the transmission resource is a resource on the frequency resource for sending the beam recovery request.

[0094] The association relationship can be pre-stored or pre-configured, and does not need to be indicated by the configuration information.

[0095] In a possible design, the beam recovery request is sent on the second frequency resource of the frequency resource group, and specifically:

[0096] The beam recovery request is sent on a transmission resource associated with the downlink signal of the second frequency resource.

[0097] In a possible design, the association relationship comprises an association relationship between the transmission resource and at least one of the following information: an identifier of the downlink signal, an identifier of a downlink signal group, an identifier of the frequency resource, an identifier of the frequency resource group, an identifier of an antenna port, and an identifier of an antenna port group.

[0098] In a possible design, the association relationship is specifically:

[0099] In a case where k=0, 1, 2, or 3, r n =2k+(0 or / and 1)+n.

[0100] In a case where k=4, 5, 6, or 7, r n =k+4+n.

[0101] Wherein, k is an index of the downlink signal of the frequency resource, n is an index of the frequency resource, and r n is an index of the transmission resource on the frequency resource.

[0102] In a possible design, the downlink signal is any one of a CSI-RS and a synchronization signal block (SS block).

[0103] In yet another aspect, a communication apparatus is provided with a function to implement the network device behavior in the above method. The function can be implemented by hardware, or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above functions. For example, the network device can be a chip (such as a baseband chip, or a communication chip, etc.) or a sending device (such as a network device, a baseband board, etc.). The above method can be implemented by software, hardware, or by hardware executing corresponding software.

[0104] In one possible design, the apparatus includes a processing unit and a sending unit; the processing unit is configured to configure at least one frequency resource group; each frequency resource group includes at least two frequency resources, and each frequency resource is associated with at least one beam; the sending unit is configured to send configuration information of the at least one frequency resource group to a terminal device; the configuration information includes information that frequency resources within each frequency resource group have quasi-co-location (QCL) relationship; and the sending unit is further configured to send a downlink signal using at least one beam on frequency resources corresponding to the at least one frequency resource group.

[0105] The specific content of the configuration information can refer to the implementation method of the first aspect, which will not be repeated here.

[0106] In yet another aspect, the apparatus includes a transceiver, a memory, and a processor; the memory stores a set of program codes, and the processor is configured to invoke the program codes stored in the memory to perform the following operations:

[0107] configure at least one frequency resource group; each frequency resource group includes at least two frequency resources, and each frequency resource is associated with at least one beam;

[0108] the transceiver is configured to send configuration information of the at least one frequency resource group to a terminal device; the configuration information includes information that frequency resources within each frequency resource group have quasi-co-location (QCL) relationship;

[0109] the transceiver is further configured to send a downlink signal using at least one beam on frequency resources corresponding to the at least one frequency resource group.

[0110] The specific content of the configuration information can refer to the implementation method of the first aspect, which will not be repeated here.

[0111] Furthermore, a communication device is provided, which has the function of implementing the terminal device behavior described in the above method. This function can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above function. For example, the terminal device can be a chip (such as a baseband chip or communication chip) or a transmitting device (such as a network device, baseband board, etc.). The above method can be implemented in software, hardware, or by hardware executing corresponding software.

[0112] In one possible design, the apparatus includes: a receiving unit and a processing unit; the receiving unit is configured to receive configuration information of at least one frequency resource group from a network device, and to receive downlink signals on the frequency resources corresponding to the at least one frequency resource group by instructing a beam; wherein each frequency resource group includes at least two frequency resources, and the configuration information indicates that the frequency resources within each frequency resource have a quasi-co-location QCL relationship; the processing unit is configured to monitor the downlink signals.

[0113] The specific implementation of the receiving unit and the processing unit can be referred to the implementation method in the second aspect, and will not be repeated here.

[0114] Furthermore, the device includes: a transceiver, a memory, and a processor; wherein,

[0115] The transceiver is configured to receive configuration information of at least one frequency resource group from a network device, and to receive downlink signals on the frequency resources corresponding to the at least one frequency resource group by instructing a beam; wherein each frequency resource group includes at least two frequency resources, and the configuration information indicates that the frequency resources within each frequency resource have a quasi-co-occurrence QCL relationship.

[0116] The memory stores a set of program code, and the processor is used to call the program code stored in the memory to perform the following operations:

[0117] Monitor the downlink signal.

[0118] Furthermore, a communication device is provided, which has the function of implementing the terminal device behavior described in the above method. This function can be implemented in hardware or by hardware executing corresponding software. The hardware or software includes one or more modules corresponding to the above function. For example, the terminal device can be a chip (such as a baseband chip or communication chip) or a transmitting device (such as a network device, baseband board, etc.). The above method can be implemented in software, hardware, or by hardware executing corresponding software.

[0119] In a possible design, the apparatus includes a receiving unit, a processing unit, and a sending unit. The receiving unit is configured to receive configuration information of at least one frequency resource group, and receive a downlink signal on frequency resources corresponding to the at least one frequency resource group through at least one beam. Each frequency resource group includes at least two frequency resources, and each frequency resource corresponds to at least one beam. The configuration information includes an identifier of each frequency resource group and an identifier of each frequency resource. The processing unit is configured to instruct the sending unit to send a beam recovery request on a second frequency resource in the frequency resource group, in a case where a beam failure associated with a first frequency resource in the frequency resource group is detected according to the downlink signal.

[0120] The specific implementation of the receiving unit, the processing unit, and the sending unit can refer to the implementation of the method in the third aspect, which will not be repeated here.

[0121] In another aspect, the apparatus includes a transceiver, a memory, and a processor.

[0122] The transceiver is configured to receive configuration information of at least one frequency resource group, and receive a downlink signal on frequency resources corresponding to the at least one frequency resource group through at least one beam. Each frequency resource group includes at least two frequency resources, and each frequency resource corresponds to at least one beam. The configuration information includes an identifier of each frequency resource group and an identifier of each frequency resource.

[0123] The memory stores a set of program codes, and the processor is configured to invoke the program codes stored in the memory to perform the following operations:

[0124] According to a case where a beam failure associated with a first frequency resource in the frequency resource group is detected according to the downlink signal, a beam recovery request is sent on a second frequency resource in the frequency resource group.

[0125] Based on the same inventive concept, since the principle and beneficial effects of the apparatus in solving problems can refer to the method embodiments of the terminal device and the beneficial effects brought by the method embodiments, the implementation of the apparatus can refer to the implementation of the method, and the repeated parts will not be repeated here.

[0126] Another aspect of the present application provides a computer readable storage medium, which stores instructions, and when the instructions are run on a computer, the computer executes the method in the above aspects.

[0127] Another aspect of the present application provides a computer program product including instructions, and when the instructions are run on a computer, the computer executes the method in the above aspects. BRIEF DESCRIPTION OF DRAWINGS

[0128] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background art, the accompanying drawings needed to be used in the embodiments of the present application or the background art will be described below.

[0129] Figure 1a is a schematic diagram of the distribution of received power in the angle of arrival;

[0130] Figure 1b is another schematic diagram of the distribution of received power in the angle of arrival;

[0131] Figure 2 is a schematic diagram of a communication system provided by the embodiments of the present application;

[0132] Figure 3 is a schematic diagram of the interaction flow of a communication method provided by the embodiments of the present application;

[0133] Figure 4 is a schematic diagram of the structure and transmission mode of a synchronization signal of an example;

[0134] Figure 5a is a schematic diagram of the transmission of an SS block on a plurality of carriers of an example;

[0135] Figure 5b is another schematic diagram of the transmission of an SS block on a plurality of carriers of an example;

[0136] Figure 5c is still another schematic diagram of the transmission of an SS block on a plurality of carriers of an example;

[0137] Figure 6 is still another schematic diagram of the transmission of an SS block on a plurality of carriers of an example;

[0138] Figure 7 is a schematic diagram of the interaction flow of another communication method provided by the embodiments of the present application;

[0139] Figure 8 is a schematic diagram of the structure of a simplified terminal device provided by the embodiments of the present application;

[0140] Figure 9 is a schematic diagram of the structure of a simplified network device provided by the embodiments of the present application;

[0141] Figure 10 is a schematic diagram of carrier aggregation provided by the embodiments of the present application;

[0142] Figure 11a is a flowchart of a communication method provided by the embodiments of the present application;

[0143] Figure 11b is a schematic diagram of the structure of a carrier component provided by the embodiments of the present application;

[0144] Figure 11c is another structural schematic view of a carrier component provided by an embodiment of the present application;

[0145] Figure 12a is another flow schematic view of a communication method provided by an embodiment of the present application;

[0146] Figure 12b is another structural schematic view of a carrier component provided by an embodiment of the present application;

[0147] Figure 13 is a structural schematic view of a communication device provided by an embodiment of the present application;

[0148] Figure 14 is another structural schematic view of a communication device provided by an embodiment of the present application;

[0149] Figure 15 is another structural schematic view of a communication device provided by an embodiment of the present application;

[0150] Figure 16 is another structural schematic view of a communication device provided by an embodiment of the present application;

[0151] Figure 17 is another structural schematic view of a communication device provided by an embodiment of the present application;

[0152] Figure 18 is another structural schematic view of a communication device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0153] The embodiments of the present application will be described below in conjunction with the accompanying drawings.

[0154] Figure 2 A communication system is given. The communication system can include at least one network device 100 (only 1 is shown) and one or more terminal devices 200 connected with the network device 100.

[0155] The network device 100 can be a device capable of communicating with the terminal device 200. The network device 100 can be any kind of device having a wireless transceiving function. Examples include, but are not limited to, a base station (e.g., a base station NodeB, an evolved NodeB eNodeB, a base station in a fifth generation (5G) communication system, a base station or network device in a future communication system, an access node in a WiFi system, a wireless relay node, a wireless backhaul node, etc.). The network device 100 can also be a wireless controller in a cloud radio access network (CRAN) scenario. The network device 100 can also be a network device in a 5G network or a network device in a future evolved network; it can also be a wearable device or a vehicle-mounted device, etc. The network device 100 can also be a small station, a transmission reference point (TRP), etc. Of course, the present application is not limited thereto.

[0156] The terminal device 200 is a device having a wireless transceiving function, which can be deployed on land, including indoors or outdoors, handheld, wearable, or vehicle-mounted; it can also be deployed on water (e.g., a ship, etc.); it can also be deployed in the air (e.g., an airplane, a balloon, a satellite, etc.). The terminal device can be a mobile phone, a tablet computer, a computer with a wireless transceiving function, a virtual reality (VR) terminal device, an augmented reality (AR) terminal device, a wireless terminal in industrial control, a wireless terminal in self-driving, a wireless terminal in remote medical treatment, a wireless terminal in a smart grid, a wireless terminal in transportation safety, a wireless terminal in a smart city, a wireless terminal in a smart home, etc. The embodiments of the present application do not limit the application scenarios. The terminal device can also be referred to as a user equipment (UE), an access terminal device, a UE unit, a UE station, a mobile station, a mobile station, a remote station, a remote terminal device, a mobile device, a UE terminal device, a terminal device, a wireless communication device, a UE agent, or a UE apparatus, etc.

[0157] It should be noted that the terms "system" and "network" in the embodiments of the present application can be used interchangeably. "Multiple" means two or more, and therefore, "multiple" in the embodiments of the present application can also be understood as "at least two". "And / or" describes the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B can represent the following three cases: A exists alone, A and B exist together, and B exists alone. In addition, the character " / ", if not specially stated, generally represents an "or" relationship between the associated objects before and after it.

[0158] Figure 3 An interaction flow diagram of a communication method provided by the embodiments of the present application can include the following steps:

[0159] S101, the network device configures at least one frequency resource group, wherein each frequency resource group includes one or more frequency resources.

[0160] S102, the network device sends indication information of the at least one frequency resource group to the terminal device. The terminal device receives the indication information of the at least one frequency resource group from the network device.

[0161] S103, the network device uses at least one beam to send a downlink signal on the frequency resource corresponding to the at least one frequency resource group. The terminal device receives the downlink signal from the network device through at least one beam, and the downlink signal is sent on the frequency resource corresponding to the at least one frequency resource group.

[0162] S104, the terminal device measures the downlink signal.

[0163] S105, the terminal device reports indication information of whether multiple frequency resources in the at least one frequency resource group have a QCL relationship.

[0164] Correspondingly, the network device receives information from the terminal device for indicating whether multiple frequency resources in the at least one frequency resource group have a QCL relationship.

[0165] The communication device involved in the present application can include a first communication device and a second communication device, and can also be more communication devices, such as Figure 3 As shown, the first communication device here is a network device, and the second communication device is a terminal device.

[0166] In this application, the frequency resource can be a carrier component (CC, hereinafter referred to as "carrier") or a bandwidth part (BP). The bandwidth part refers to a part of the bandwidth of a carrier. One carrier can be divided into multiple bandwidth parts, and the multiple bandwidth parts constitute a bandwidth part group, that is, one carrier can be regarded as one or more bandwidth part groups.

[0167] The QCL relationship referred to in this application refers to the QCL relationship between antenna ports.

[0168] The QCL relationship between antenna ports can specifically include: the QCL relationship between carrier components, the QCL relationship between beams, the QCL relationship between bandwidth parts, etc.

[0169] The QCL relationship between one carrier and another carrier means that the antenna port for transmitting one carrier and the antenna port for transmitting another carrier have a QCL relationship.

[0170] The QCL relationship between one bandwidth part and another bandwidth part means that the antenna port for transmitting one bandwidth part and the antenna port for transmitting another bandwidth part have a QCL relationship.

[0171] The QCL relationship between one beam and another beam means, for example, that the antenna port for transmitting one downlink signal and the antenna port for transmitting another downlink signal have a QCL relationship. The scenario of this example is to use downlink signal identification and antenna port identification to indicate beam information. For example, beam 1 is indicated by CSI-RS resource #1, and beam 2 is indicated by CSI-RS resource #2. Beam 1 and beam 2 have a QCL relationship, which essentially means that the antenna ports of CSI-RS resource #1 and CSI-RS resource #2 have a QCL relationship.

[0172] If the description "has a QCL relationship" is used in this paper, it can include the QCL relationship between carriers, the QCL relationship between bandwidth parts, and the QCL relationship between beams; it can also refer to one of the cases, that is, the QCL relationship between carriers, the QCL relationship between bandwidth parts, or the QCL relationship between beams.

[0173] The network device can configure at least one frequency resource group using the frequency resource aggregation technology, and assume that multiple frequency resources in the frequency resource group have a QCL relationship. The network device can configure the frequency resource group according to its own judgment. For example, the network device assumes that the QCL relationship may always be established on the frequency resources with small frequency differences, and configures multiple frequency resources with small frequency differences as a frequency resource group.

[0174] The following description of the embodiments is based on the assumption that the network device performs the QCL relationship. As an alternative implementation of S101 and S102, the network device can also not pre-configure the frequency resource group with the assumed QCL relationship, but the terminal device configures the frequency resource group, and determines whether the assumption of the frequency resource group is correct according to the measurement of the downlink signal, and then reports the indication information of the configured frequency resource group to the network device. At this time, the multiple frequency resources in the configured frequency resource group are determined to have the QCL relationship. As another alternative implementation of S101 and S102, the network device and the terminal device can also not perform the action of configuring the frequency resource group, but use the default negotiated frequency resource group.

[0175] Optionally, as an implementation, before S101, the following steps can also be included: the terminal device sends information of one or more frequency resources it supports to the network device. The network device obtains the information of one or more frequency resources supported by the terminal device. That is, the terminal device reports the capability of frequency resource aggregation. For example, the terminal device reports that it can support {frequency resource 1, frequency resource 2, frequency resource 7, frequency resource 8, frequency resource 9}. As another implementation, the network device can also default which frequency resources the terminal device supports, and if the terminal device does not support some frequency resources in the frequency resource group divided by the network device later, the terminal device can not measure the downlink signal sent on these frequency resources.

[0176] After the network device configures the frequency resource group, the network device sends the indication information of the frequency resource group to the terminal device. Specifically, the indication information of the at least one frequency resource group specifically includes at least one of the following information: the identifier of the at least one frequency resource group, and the identifier of one or more frequency resources included in each frequency resource group.

[0177] For example, a plurality of CCs are divided into two CC groups, CCG1 {CC1, CC2} and CCG2 {CC3, CC5, CC6}, and the network device sends the indication information of the two CC groups to the terminal device, that is, CCG1 includes CC1 and CC2, and CCG2 includes CC3, CC5 and CC6.

[0178] The network device sends the indication information of the frequency resource group to the terminal device after configuring the frequency resource group. The network device uses at least one beam to send a downlink signal on the frequency resource corresponding to the configured one or more frequency resource groups. The downlink signal can be a synchronization signal block (SS block) or a channel state information-reference signal (CSI-RS). The synchronization signal includes a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). As shown in the synchronization signal structure and transmission mode diagram in FIG. 6, the synchronization signal and a physical broadcast channel (PBCH) are sent in a bundle, which is called an SS block. For example, the SS block can support a maximum of 64 beam directions, which are distinguished by a synchronization signal time index (SS block time index). Different SS block time indexes indicate different beams. For example, the SS block can be periodically transmitted at a period of {20, 40, 80, 160} milliseconds. All beam directions need to be scanned within one period. Figure 4

[0179] After the terminal device receives the downlink signal sent by the network device through one or more receiving beams, the terminal device measures the downlink signal. The step S104 further includes the following steps: the terminal device measures at least one of the following information of the downlink signal: beam indication information, quality information of the downlink signal associated with the at least one frequency resource, and channel large-scale characteristics of an antenna port. The beam directions of the one or more receiving beams are all the same or partially the same.

[0180] The beam indication information can be embodied in at least one of the following: an absolute index of a beam, a relative index of a beam, a logical index of a beam, an index of an antenna port corresponding to a beam, an index of an antenna port group corresponding to a beam, an index of a downlink signal corresponding to a beam, a time index of a downlink synchronization signal block, beam pair link (BPL) information, a transmission parameter (Tx parameter) corresponding to a beam, a reception parameter (Rx parameter) corresponding to a beam, a transmission weight corresponding to a beam, a weight matrix, a weight vector, a reception weight corresponding to a beam, or an index thereof; a transmission codebook corresponding to a beam, a reception codebook corresponding to a beam, or an index thereof. ​

[0181] The measurement beam indication information described herein specifically refers to some beam identifiers being obtained by measurement and some beam identifiers being obtained by other ways. For example, the time index of a downlink synchronization signal block (6 bits are used for representation), in which 3 bits are carried in a physical broadcast channel (PBCH) and the other 3 bits can be embodied in the mask of the demodulation reference signal (DMRS) of the PBCH. For a terminal device, the 3 bits are obtained by measuring the DMRS of the PBCH, and the other 3 bits are obtained by decoding the PBCH.

[0182] The quality information of the downlink signal includes one or more of a signal-to-noise ratio (SNR) / signal to interference plus noise ratio (SINR), a reference signal received power (RSRP), a reference signal received quality (RSRQ), a received signal strength indicator (RSSI), and a channel quality indication (CQI).

[0183] The terminal device reports indication information about whether the multiple frequency resources in the at least one frequency resource group have a QCL relationship. As an implementation manner, the indication information about whether the one or more frequency resources in the at least one frequency resource group have a QCL relationship specifically includes at least one of the following information: an identifier of the at least one frequency resource group, an identifier of the one or more frequency resources, the beam indication information, quality information of a downlink signal associated with the at least one frequency resource, a channel large-scale characteristic of an antenna port, and correlation information of the at least one frequency resource. In this implementation manner, the network device needs to determine, according to the indication information, whether the multiple frequency resources in the at least one frequency resource group have a QCL relationship. As another implementation manner, the indication information can be a specific value. For example, if the indication information is a first value, it indicates that the multiple frequency resources in the at least one frequency resource group have a QCL relationship; if the indication information is a second value, it indicates that the multiple frequency resources in the at least one frequency resource group do not have a QCL relationship. In this implementation manner, the terminal device determines whether the multiple frequency resources in the at least one frequency resource group have a QCL relationship, and the network device directly receives the determination result.

[0184] The quality information of the downlink signal associated with the frequency resource can be obtained by measuring the quality of the downlink signal received on the frequency resource.

[0185] The channel large-scale characteristics of the antenna port include: delay spread, average delay, Doppler spread, Doppler shift, average gain, terminal device receive beam number, transmit / receive channel correlation, angle-of-arrival (AoA), receiver antenna spatial correlation, dominant AoA, average AoA, spread of AoA, etc.

[0186] According to the channel large-scale characteristics, three types of QCL relationships are defined:

[0187] Type 1: Average gain QCL. If two antenna ports are about average gain QCL, in general, the two antenna ports should be located at the same transmission point, so as to ensure that they experience the same road loss.

[0188] Type 2: Demodulation parameter QCL, i.e. delay spread, Doppler spread, Doppler shift, and average delay. If two antenna ports are about the above four parameters QCL, in general, the two antenna ports should be located at the same antenna panel, or be emitted by the same RF link, so as to ensure that they experience the same moving speed and phase offset.

[0189] Type 3: Spatial parameter QCL, i.e. whether the beams are directed to the same direction. If two antenna ports are about Rx spatial QCL, in general, the signals emitted by the two antenna ports can be received by the terminal device with one receive beam.

[0190] The relevance information of the at least one frequency resource can refer to the relevance between the frequency resource and the reference frequency resource in the frequency resource group. If the relevance between the multiple frequency resources in the frequency resource group and the reference frequency resource is high, the multiple frequency resources and the reference frequency resource have a QCL relationship. Specifically, in the group containing the primary frequency resource, the reference frequency resource is the primary frequency resource. In the group not containing the primary frequency resource, the network device can specify a certain frequency resource as the reference frequency resource of the group.

[0191] Specifically, the network device transmits the downlink signal on the frequency resource using the beam, and several cases can be considered. According to the actual situation, the content of the indication information reported by the terminal device can be different. Taking the transmission of SS block on multiple carriers and spatial QCL determination as an example:

[0192] One case is that the network device transmits SS block on each carrier in each carrier group.

[0193] In addition, the measurement results of the terminal device are different according to whether the directions of the beams transmitted on each carrier are all the same, partially the same, or completely different.

[0194] As Figure 5a An example of a schematic diagram of the transmission of SS blocks on multiple carriers, each carrier transmits SS blocks in multiple beam directions, and the beam indication (i.e., SS block time index) on each carrier corresponds to the same transmitted beam direction. Specifically, the network device transmits synchronization signals at the time-frequency resource positions of the synchronization signals. The terminal device measures each SS Block received on each carrier, and the content measured and reported by the terminal device can have the following several ways:

[0195] The first way: the terminal device reports relevant content after measuring the downlink signal, and the network device determines whether the carriers are QCL according to the relevant content reported by the terminal device. For example, {carrier number #1, beam information SS block time index #1, beam quality 8 dB, spatial parameter AoA 20 degrees; beam information SS block time index #2, beam quality 10 dB, spatial parameter AoA 25 degrees;...}; {carrier number #2, beam information SS block time index #1, beam quality 8 dB, spatial parameter AoA 20 degrees; beam information SS block time index #2, beam quality 10 dB, spatial parameter AoA 25 degrees;...}. The network device can determine that the two carriers are spatial QCL by comparing the beam quality information and spatial parameters of each corresponding direction of the two carriers reported by the terminal device. If the beam quality information or spatial parameters of a direction of the two carriers are different, the two carriers can not have a spatial QCL relationship.

[0196] Second, the terminal device measures the downlink signal and reports relevant content, and the network device determines whether the carriers are QCL according to the relevant content reported by the terminal device. For example, {carrier number #1, beam information SS block time index #1, beam quality 8 dB, spatial parameter correlation with the main carrier 80%; beam information SS block time index #2, beam quality 10 dB, spatial parameter correlation with the main carrier 100%;...}. Assuming that the reference carrier here is the main carrier, carrier number #1 is located in a carrier group with the main carrier, and the network device compares the spatial parameters of each corresponding direction on the carrier and the correlation with the main carrier. If the correlation exceeds the set threshold, it can be concluded that the carrier number #1 and the main carrier are spatial QCL. For the carriers in other carrier groups, the correlation of the spatial parameters of other carriers and the reference carrier can also be compared to determine whether the carriers in other carrier groups have a QCL relationship.

[0197] Third, the terminal device measures the downlink signal and determines whether the carriers have a QCL relationship by itself, and sends an indication information of whether QCL to the network device. For example, {carrier number #1, beam information SS block time index #2, beam quality 10 dB}; {carrier number #2, beam information SS block time index #2, beam quality 10 dB}; {1-bit information indicates that carriers #1 and #2 are spatial QCL}. The terminal device determines whether the two carriers have a QCL relationship according to the measurement information, and then reports an indication information of whether the two carriers have a QCL relationship to the network device. The indication information is 1-bit information. The network device can conclude that the two carriers are spatial QCL through the 1-bit information.

[0198] Fourth, the terminal device measures the downlink signal and finds that the beam information and beam quality of two or more carriers are consistent, and can only report one set of information. For example, {carrier number group #1, beam information SS block time index #2, beam quality 10 dB}. Since the beam information and beam quality measured by the two carriers are completely consistent, i.e., the QCL relationship is established, the terminal device can also report only one set of information to reduce the overhead. The network device can conclude that the two carriers are spatial QCL through the reported form. If the QCL relationship does not exist, the network device will obtain two different sets of reported information.

[0199] For a frequency resource group including N frequency resources, the terminal device can use the following forms to feed back whether each two has a QCL relationship.

[0200] For example, a table can be used, as shown in Table 1.

[0201] Table 1 QCL relationship of frequency resources in a frequency resource group

[0202]

[0203]

[0204] In Table 1, "1" indicates that there is a QCL relationship between two frequency resources, "0" indicates that there is no QCL relationship between two frequency resources, and "-" indicates invalid information. Of course, conversely, "0" can also indicate that there is a QCL relationship between two frequency resources, "1" indicates that there is no QCL relationship between two frequency resources, or "yes" indicates that there is a QCL relationship between two frequency resources, and "no" indicates that there is no QCL relationship between two frequency resources.

[0205] In addition, as can be seen from Table 1, the values on both sides of the diagonal are the same, and the terminal device can only report the value on one side.

[0206] For another example, the terminal device can use a bitmap method for feedback. Specifically, for example, for a frequency resource group with N = 4 frequency resources, the first frequency resource in the group is the reference frequency resource. The terminal device uses 4 bits (1, 1, 0, 0) to indicate that the first and second frequency resources in the group have a QCL relationship with the reference frequency resource, and the third and fourth frequency resources in the group do not have a QCL relationship with the reference frequency resource. The terminal device can also use N-1 bits (1, 0, 0) to indicate the QCL relationship between the reference frequency resource and other frequency resources in the group except the reference frequency resource.

[0207] For example, Figure 5b Another example of transmitting SS blocks on multiple carriers, where SS blocks are transmitted in multiple beam directions on each carrier, and the multiple beam directions have only some of them in common. The dashed line indicates a beam direction that is transmitted on carrier 1 but not on carrier 2. In this case, for example, the beam direction corresponding to SS block time index #2 on carrier 2 is different from the beam direction corresponding to SS block time index #2 on carrier 1, and the terminal device needs to distinguish them according to the carrier number feedback. Other reporting contents can refer to the previous description. The terminal device can measure whether the carriers have a QCL relationship according to the received signals of some beams.

[0208] For example, Figure 5cThis example illustrates another type of SS block transmission over multiple carriers, where SS blocks are transmitted in multiple beam directions on each carrier, and these beam directions are all different. The beams indicated by dashed lines are beam directions transmitted on carrier 1 but not on carrier 2. This indicates that the network device must be using different radio frequency links on these two carriers. For example, the beam direction corresponding to SS block time index #2 on carrier 2 is different from the beam direction corresponding to SS block time index #2 on carrier 1, requiring the terminal device to distinguish them based on carrier number feedback. Because the network device does not use beams in the same direction when transmitting downlink signals, the terminal device cannot determine whether the two carriers have a QCL relationship based on this measurement result, nor can the network device determine whether the two carriers have a QCL relationship based on the information reported by the terminal device. The terminal device can correct this QCL relationship in subsequent beam measurements.

[0209] Another scenario is that the network device transmits downlink signals on one carrier within each carrier group. For example... Figure 6 This example illustrates another type of multi-carrier uplink / downlink signal transmission. Carrier 1 and carrier 2 belong to the same carrier group. The network device only transmits SS blocks on carrier 1, and the transmitted beam has multiple directions, each represented by a different SS block time index. In this case, the terminal device can only report {carrier group number, beam indication information, beam quality}. The carrier number, QCL assumptions between different carriers, or correlations between spatial parameters can be omitted. At this stage, the terminal device can only assume that all carriers within a carrier group have spatial QCL relationships. The terminal device can verify in subsequent stages whether the spatial QCL relationship holds true for each carrier within the group.

[0210] The network device updates the pre-configured frequency resource group after determining the QCL relationship of the frequency resource according to the indication information of the QCL relationship of the terminal device, and sends the updated frequency resource group to the terminal device. Therefore, optionally, after step S105, the method can further include the following steps: the network device informs the terminal device of the updated frequency resource group. The terminal device receives the updated frequency resource group informed by the network device. For example, the network device pre-configures the carrier group as: {carrier group #1: carrier 1, carrier 2}; {carrier group #2: carrier 7, carrier 8}. If the terminal device reports that the spatial QCL of carrier 1 and carrier 2 is true, and the spatial QCL of carrier 7 and carrier 8 is not true, the network device can reconfigure the carrier group as: {carrier group #1: carrier 1, carrier 2}; {carrier group #2: carrier 7}; {carrier group #3: carrier 8}, and inform the terminal device of the updated frequency resource group information.

[0211] It should be noted that the configuration signaling of the network device and the reporting signaling of the terminal device can be sent using radio resource control (RRC) signaling of a data channel, or using media access control control element (MAC-CE) signaling or downlink control information (DCI) signaling. The channel used can be a broadcast channel or a control channel. This is not limited here.

[0212] As can be seen, through the information interaction between the network device and the terminal device, a frequency resource grouping specific to each terminal device is realized, so that the frequency resources in each frequency resource group are QCL for a terminal device, so that the network device can serve the terminal device using the frequency resource grouping.

[0213] Further, since the terminal device can move, the direction of the receive beam of the terminal device can change, and the QCL relationship of the frequency resource for the terminal device needs to be maintained and updated.

[0214] For example, when the terminal device just accesses the network device, the network device can send a synchronization signal to determine the QCL relationship of the frequency resource for the terminal device. In the subsequent maintenance and update of the QCL relationship, the network device can send a CSI-RS to update the QCL relationship, and of course other downlink signals can also be sent. Among them, the synchronization signal is periodically sent, and the CSI-RS can be periodically, aperiodically or semi-statically sent.

[0215] After the terminal device moves, the network device configures the frequency resource of the service terminal device, which can change, and the configuration of the frequency resource group also changes accordingly. Therefore, optionally, after step S105, the method can further include the following steps: the network device notifies the terminal device of the updated frequency resource group. The terminal device receives the updated frequency resource group notified by the network device. The terminal device determines whether the frequency resources included in the updated frequency resource group have a QCL relationship, which is the same as the foregoing embodiments, except that the downlink signal received by the terminal device can also be a CSI-RS. Here, no longer be described. Of course, if the configuration of the frequency resource group does not change, the terminal device can also further confirm whether the frequency resources included in the frequency resource group have a QCL relationship.

[0216] Among them, if the network device sends a CSI-RS, the beam indication information in the indication information reported by the terminal device can be a CSI-RS resource number, a CSI-RS resource configuration number, or a CSI-RS port number, or a combination of the above several numbers.

[0217] In addition, in the present embodiment, since the beam direction on each frequency resource can be different, the network device also needs to indicate which beam on which carrier the terminal device uses to transmit and receive. Therefore, optionally, the method further includes the following steps: the network device sends a carrier resource identifier and a beam identifier to the terminal device. For example, {carrier identifier #1, beam identifier #1,... beam identifier #N} is used to indicate the terminal device to use the receiving beam direction corresponding to the beams #1~#N on the carrier #1 for reception.

[0218] In addition, when sending a CSI-RS for QCL relationship maintenance and update, the scenario in which the network device and the terminal device can maintain multiple beam pair links (BPLs) can also be considered. For example, on two adjacent carriers, one beam pair can have a spatial QCL relationship (for example, the beam pair experiences line-of-sight (LOS)), and another beam pair can not have a spatial QCL relationship (for example, the beam pair experiences non-line-of-sight (NLOS)). The indication information that the multiple frequency resources of the at least one frequency resource group have a QCL relationship also includes the indication information that the one or more beams have a QCL relationship.

[0219] The beam pairs and carriers maintained between the network device and the terminal device can have the following forms:

[0220] One form is, {carrier group #1: carrier 1, carrier 2; beam pair 1; spatial QCL assumption is true}; {carrier group #1: carrier 1, carrier 2; beam pair 2; spatial QCL assumption is not true}. This form directly gives the indication of whether the beam pair has a QCL relationship.

[0221] Another form is, {carrier 1, beam pair 1, CSI-RS resource #1; beam pair 2, CSI-RS resource #2}; {carrier 2, beam pair 1, CSI-RS resource #2; beam pair 2, CSI-RS resource #3}. This form can determine whether the beam pair has a QCL relationship by comparing whether the antenna ports corresponding to the CSI-RS resources of each beam pair have a QCL relationship. For example, the antenna ports corresponding to CSI-RS resource #1 and CSI-RS resource #2 have a QCL relationship, then beam pair 1 has a QCL relationship; while the antenna ports corresponding to CSI-RS resource #2 and CSI-RS resource #3 have a QCL relationship, then beam pair 2 does not have a QCL relationship.

[0222] According to the communication method provided by the embodiment of the application, through the information interaction of the network device and the terminal device, the frequency resource grouping specific to each terminal device is realized, so that the frequency resources in each frequency resource group are QCL for a terminal device, so that the network device can serve the terminal device by using the frequency resource grouping.

[0223] The above embodiments mainly describe how to determine the QCL relationship of the frequency resources through the information interaction of the network device and the terminal device. The following embodiments focus on how to utilize the QCL relationship of the frequency resources after the QCL relationship of the frequency resources is determined, i.e., after the frequency resource group is determined.

[0224] Figure 7 The interaction flowchart of another communication method provided by the embodiment of the application is shown in the figure. The embodiment considers the scenario that the terminal device accesses the network device, and before step S201 is performed, the following steps can also be included:

[0225] Step A, the network device sends a downlink signal, for example, a synchronization signal. The network device can send the downlink signal in multiple beam directions in a scanning manner. This is to maintain coverage in a beam-based communication system.

[0226] Step B, the terminal device is powered on, detects the energy of each frequency point, and selects a frequency point that meets the conditions to initiate access. The carrier corresponding to the access frequency point is the primary carrier.

[0227] The terminal device can measure the energy in multiple beam directions in a scanning manner. In a beam-based communication system, the change of the terminal device receiving beam direction needs to be considered.

[0228] Since the network device also transmits in a scanning manner, the terminal device can select to camp on a receive beam direction for a period of time, for example, a period of time not less than the SS block transmission period, to detect the energy in all directions transmitted by the base station. If there is no access condition, the terminal device switches the receive beam direction and repeats the above detection process.

[0229] If the terminal device has N radio frequency links, i.e., the terminal device can simultaneously support using N receive beam directions, the terminal device can select to camp on not more than N receive beam directions at the same time for a period of time, for example, a period of time not less than the SS block transmission period, to detect the energy in all directions transmitted by the base station. If there is no access condition, the terminal device switches not more than N receive beam directions and repeats the above detection process. In this way, the access process can be accelerated.

[0230] S201, the network device configures at least one frequency resource group, wherein each frequency resource group includes one or more frequency resources.

[0231] S202, the network device sends indication information of the at least one frequency resource group to the terminal device. The terminal device receives the indication information of the at least one frequency resource group from the network device.

[0232] S203, the network device transmits downlink signals on the frequency resources corresponding to the at least one frequency resource group using at least one beam. The terminal device receives the downlink signals from the network device through at least one beam, and the downlink signals are transmitted on the frequency resources corresponding to the at least one frequency resource group.

[0233] S204, the terminal device measures the downlink signals.

[0234] S205, the terminal device reports indication information of whether multiple frequency resources in the at least one frequency resource group have QCL relationship. The network device receives information from the terminal device for indicating whether multiple frequency resources in the at least one frequency resource group have QCL relationship.

[0235] The above steps S201 to S205 regarding the determination process of whether the frequency resources have QCL relationship can refer to the foregoing embodiments.

[0236] S206, the network device configures a primary frequency resource for the terminal device.

[0237] Since the indication information of the QCL relationship reported by the terminal device includes beam quality information, the network device can reconfigure the frequency resource with the strongest measured signal as the primary frequency resource according to the beam quality information. And the network device notifies the terminal device of the reconfigured primary frequency resource.

[0238] Further, the network device notifies the terminal device to activate the use of other frequency resources, that is, the network device sends an activation instruction to the terminal device.

[0239] S207, the terminal device obtains synchronization information corresponding to one of the frequency resources in each frequency resource group according to the indication information of whether the multiple frequency resources in the at least one frequency resource group have QCL relationship.

[0240] The terminal device initiates a random access process on the frequency resource to be activated to obtain synchronization information, which includes uplink synchronization information and / or downlink synchronization information, such as time advance (TA). When obtaining the synchronization information, since the frequency resource group is determined in advance and the multiple frequency resources in the frequency resource group have QCL relationship, the terminal device only needs to obtain the synchronization information required for synchronization on one of the frequency resources in each frequency resource group, because the synchronization information between the frequency resources with QCL relationship is the same and does not need to be measured again. In particular, for other frequency resources with QCL relationship with the primary frequency resource, the random access process can be omitted. In this way, the network device can save the signaling overhead of sending synchronization information to a certain extent.

[0241] It should be noted that if the network device pre-configures the frequency resource group and by default the multiple frequency resources in the frequency resource group have QCL relationship, the terminal device also only needs to obtain the synchronization information required for synchronization on one of the frequency resources in each frequency resource group, and the network device can save the signaling overhead of sending synchronization information to a certain extent.

[0242] S208, the terminal device activates the auxiliary frequency resources for data transmission according to the indication information that the primary frequency resource and the multiple auxiliary frequency resources have QCL relationship, after receiving the indication of activating the auxiliary frequency resources from the network device.

[0243] Generally, for example, in a frequency division duplexing (FDD) scenario, after n+8 subframes, the secondary frequency resource is activated and can be used for data transmission. The network device sends an indication of activating the secondary frequency resource in the subframe n. In particular, for other secondary frequency resources having a QCL relationship with the primary frequency resource, the secondary frequency resource can be used for data transmission after k subframes, where 0≤k≤8, without waiting for 8 subframes after receiving the activation indication. Thus, the utilization of the frequency resource can be improved.

[0244] According to the communication method provided by the embodiment of the application, the information interaction between the network device and the terminal device is realized, the frequency resource grouping specific to each terminal device is realized, the frequency resources in each frequency resource group are QCL for a terminal device, so that the network device can serve the terminal device by using the frequency resource grouping; for the frequency resource groups having a QCL relationship, only the uplink and downlink synchronization information of one frequency resource in the frequency resource group needs to be measured, and the signaling overhead of the network device for sending the uplink and downlink synchronization information is saved to a certain extent; for other secondary frequency resources having a QCL relationship with the primary frequency resource, the secondary frequency resource can be directly used for data transmission, without waiting for 8 subframes after receiving the activation indication, so that the utilization of the frequency resource can be improved.

[0245] The above describes the method of the embodiment of the application in detail, and the apparatus of the embodiment of the application is provided below.

[0246] The embodiment of the application can divide the terminal device or the network device into functional modules according to the above method examples, for example, each functional module can be divided according to each function, or two or more functions can be integrated into one processing module. The above integrated module can be realized in the form of hardware or in the form of a software functional module. It should be noted that the division of the modules in the embodiment of the application is illustrative, and is only a logical functional division, and another division mode can be used in actual implementation. The following takes the example of dividing each functional module according to each function.

[0247] Figure 8 A simplified terminal device structure schematic diagram is shown. For the convenience of understanding and illustration, Figure 8 In the embodiment, the terminal device takes a mobile phone as an example. As shown in Figure 8As shown, the terminal device includes a processor, a memory, a radio frequency circuit, an antenna, and an input and output device. The processor is mainly used for processing communication protocols and communication data, controlling the terminal device, executing software programs, processing data of the software programs, and the like. The memory is mainly used for storing software programs and data. The radio frequency circuit is mainly used for conversion between baseband signals and radio frequency signals and processing of the radio frequency signals. The antenna is mainly used for receiving and transmitting radio frequency signals in the form of electromagnetic waves. The input and output device, such as a touch screen, a display screen, a keyboard, and the like, is mainly used for receiving data input by a user and outputting data to the user. It should be noted that some types of terminal devices can not have an input and output device.

[0248] When data needs to be sent, the processor performs baseband processing on the data to be sent, and outputs a baseband signal to the radio frequency circuit. The radio frequency circuit performs radio frequency processing on the baseband signal, and transmits a radio frequency signal in the form of electromagnetic waves through the antenna. When data is sent to the terminal device, the radio frequency circuit receives a radio frequency signal through the antenna, converts the radio frequency signal into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal into data and processes the data. For the sake of illustration, Figure 8 In the embodiment shown in the figure, only one memory and one processor are shown. In actual terminal device products, there can be one or more processors and one or more memories. The memory can also be referred to as a storage medium or a storage device, etc. The memory can be independent of the processor or integrated with the processor. The embodiments of the present application do not limit this.

[0249] In the embodiments of the present application, the antenna and the radio frequency circuit with transceiving functions can be regarded as a receiving unit and a sending unit (which can also be collectively referred to as a transceiving unit) of the terminal device, and the processor with processing functions can be regarded as a processing unit of the terminal device. As Figure 8 As shown, the terminal device includes a receiving unit 8001, a processing unit 8002, and a sending unit 8003. The receiving unit 8001 can also be referred to as a receiver, a receiver, a receiving circuit, etc. The sending unit 8003 can also be referred to as a transmitter, a transmitter, a transmitter, a transmitting circuit, etc. The processing unit can also be referred to as a processor, a processing board, a processing module, a processing device, etc.

[0250] For example, in one embodiment, the receiving unit 8001 is configured to perform the steps S102 and S103 of the embodiment shown in the figure, the processing unit 8002 is configured to perform the step S104 of the embodiment shown in the figure, and the sending unit 8003 is configured to perform the step S105 of the embodiment shown in the figure. Figure 3 For example, in one embodiment, the receiving unit 8001 is configured to perform the steps S102 and S103 of the embodiment shown in the figure, the processing unit 8002 is configured to perform the step S104 of the embodiment shown in the figure, and the sending unit 8003 is configured to perform the step S105 of the embodiment shown in the figure. Figure 3 For example, in one embodiment, the receiving unit 8001 is configured to perform the steps S102 and S103 of the embodiment shown in the figure, the processing unit 8002 is configured to perform the step S104 of the embodiment shown in the figure, and the sending unit 8003 is configured to perform the step S105 of the embodiment shown in the figure. Figure 3 For example, in one embodiment, the receiving unit 8001 is configured to perform the steps S102 and S103 of the embodiment shown in the figure, the processing unit 8002 is configured to perform the step S104 of the embodiment shown in the figure, and the sending unit 8003 is configured to perform the step S105 of the embodiment shown in the figure.

[0251] For example, in another embodiment, the receiving unit 8001 is configured to perform the steps S102 and S103 of the embodiment shown in the figure, the processing unit 8002 is configured to perform the step S104 of the embodiment shown in the figure, and the sending unit 8003 is configured to perform the step S105 of the embodiment shown in the figure. Figure 7In the illustrated embodiment, steps S202, S203, and S207 are executed by the processing unit 8002. Figure 7 Steps S204 and S208 of the illustrated embodiment, and the sending unit 8003 are used to execute Figure 7 Steps S205 and S208 of the illustrated embodiment.

[0252] Figure 9 A simplified schematic diagram of a network device structure is shown. The network device includes an RF signal transceiver and conversion section and a processing unit 9003. The RF signal transceiver and conversion section further includes a receiving unit 9001 and a transmitting unit 9002 (which can also be collectively referred to as the transceiver unit). The RF signal transceiver and conversion section is mainly used for transmitting and receiving RF signals and converting RF signals to baseband signals; the 9003 section is mainly used for baseband processing and controlling the network device. The receiving unit 9001 can also be called a receiver, receiver circuit, etc., and the transmitting unit 9002 can also be called a transmitter, transmitter, transmitter circuit, etc. The 9003 section is usually the control center of the network device, often referred to as the processing unit, used to control the network device to perform the above-mentioned tasks. Figure 3 or Figure 7 The steps performed by network devices are described in detail in the relevant sections above.

[0253] The 9003 section may include one or more single boards, each single board may include one or more processors and one or more memories, the processors are used to read and execute programs in the memories to implement baseband processing functions and control network devices. If multiple single boards exist, the single boards can be interconnected to increase processing power. As an optional implementation, multiple single boards may share one or more processors, or multiple single boards may share one or more memories, or multiple single boards may simultaneously share one or more processors.

[0254] For example, in one embodiment, the processing unit 9003 is used to perform Figure 3 In step S101 of the illustrated embodiment, the sending unit 9002 is used to perform... Figure 3 Steps S102 and S103 of the illustrated embodiment, and the receiving unit 9001 are used to execute Figure 3 Step S105 of the illustrated embodiment.

[0255] For example, in another embodiment, the processing unit 9003 is used to perform... Figure 7 In the illustrated embodiment, steps S201 and S206 are executed by the sending unit 9002. Figure 7 Steps S202, S203, and S207 of the illustrated embodiment, and the receiving unit 9001 are used to execute... Figure 7 Steps S205 and S208 of the illustrated embodiment.

[0256] As another optional implementation, with the development of system-on-chip (SoC) technology, all or part of the functions of the 9001 part, the 9002 part and the 9003 part can be realized by the SoC technology, for example, by a base station function chip that integrates a processor, a memory, an antenna interface and the like, and the programs related to the functions of the base station are stored in the memory and executed by the processor to realize the related functions of the base station. Optionally, the base station function chip can also read the memory outside the chip to realize the related functions of the base station.

[0257] The present application also provides a second embodiment for solving different technical problems.

[0258] In order to improve the transmission rate and efficiency of the wireless communication system, in the fifth generation new radio (5G NR) communication system, the network device and the terminal device communicate by using beams, and the beam has the characteristic that the energy of the signal is concentrated in a certain direction. The network device and the terminal device can generate beams by using beam forming technology, and the beam forming technology specifically includes digital beam forming technology, analog beam forming technology and hybrid beam forming technology. The beam communication method can effectively enhance the anti-interference ability of the signal, so as to achieve higher transmission rate and efficiency. The complex channel environment between the network device and the terminal device can cause abnormal communication, and therefore it is necessary to quickly and accurately detect the beam failure condition. How to detect the beam failure is a hot research topic at present.

[0259] The technical problem to be solved by the second embodiment of the present application is to provide a communication method, which can quickly detect the beam failure condition.

[0260] In the LTE communication system, the transmission of the channel is in the unit of a radio frame (RF), and one radio frame includes 10 subframes, each subframe has a length of 1 millisecond (ms), and each subframe includes two slots, each slot has a length of 0.5 milliseconds. The number of symbols contained in each slot is related to the length of the cyclic prefix (CP) in the subframe. If the cyclic prefix is a normal cyclic prefix (normal CP), each slot contains 7 symbols, and each subframe contains 14 symbols. If the cyclic prefix is an extended cyclic prefix (extended CP), each slot contains 6 symbols, and each subframe contains 12 symbols. In the long-term evolution communication system, a resource element (RE) is the smallest unit in the time-frequency domain, which is uniquely identified by an index pair (k, l), k is the subcarrier index, and l is the symbol index.

[0261] In a Long Term Evolution (LTE) communication system, multiple carriers are simultaneously used to transmit data to increase the system bandwidth and improve the data transmission rate. Figure 10 As shown in FIG. 1, a carrier aggregation (CA) mode in the LTE communication system is shown, in which multiple in-band continuous carrier components are aggregated, or multiple in-band discontinuous carriers are aggregated, or multiple out-of-band discontinuous carrier components are aggregated.

[0262] For example, in a dual connectivity (DC) scenario, a terminal device is connected to a master cell and a secondary cell simultaneously, and performs uplink transmission and downlink transmission simultaneously using the master cell and the secondary cell, the master cell corresponds to a master carrier component, and the secondary cell corresponds to a secondary carrier component.

[0263] In the LTE communication system, a terminal device monitors a link quality at a physical layer to determine an out-of-sync state or an in-sync state, and reports the state to a higher layer. When the terminal device measures a link quality less than a first threshold value, the terminal device sends an out-of-sync indication to the higher layer. When the terminal device measures a link quality greater than a second threshold value, the terminal device sends an in-sync indication to the higher layer. When the higher layer of the terminal device receives N consecutive out-of-sync indications, the higher layer determines that the link fails, and sends a link recovery request to a network device. The terminal device starts a timer with a time duration of T1. If the timer expires, the terminal device determines that the link recovery fails. If the terminal device receives M consecutive in-sync indications within T1, the terminal device determines that the link recovers, and stops the timer.

[0264] In summary, there is no method for detecting a beam in the current LTE communication system. If the link detection method in the LTE communication system is applied to the beam detection, the determination process usually takes a long time, which increases the communication latency.

[0265] In the beam detection method provided by the embodiment, a network device sends configuration information indicating that a frequency resource group has a QCL relationship to a terminal device, and sends a downlink signal on the frequency resource group. The terminal device can measure the downlink signal on multiple frequency resources having the QCL relationship according to the QCL relationship of the frequency resource group, thereby obtaining more measurement opportunities. Compared with single-carrier beam detection, the beam detection accuracy can be effectively improved and the detection time can be reduced.

[0266] Please refer toFigure 11a , Figure 11a is a communication method provided by an embodiment of the application, which comprises but is not limited to the following steps:

[0267] S301, the network device configures at least one frequency resource group.

[0268] wherein the frequency resource represents a resource in the frequency domain for transmitting data, each frequency resource group comprises at least two frequency resources, and the frequency resource can be a carrier component (CC) or a bandwidth part (BP); the network device determines the frequency resources having a QCL relationship according to the measurement parameters of the frequency resources reported by the terminal device, and encodes the frequency resources having the QCL relationship into at least one frequency resource group. The measurement parameters include at least one of delay spread, average delay, Doppler spread, average gain, terminal device receive beam number, transmit-receive channel correlation, receive angel of arrival (AOA), receive antenna spatial correlation, main angle of arrival, and average angle of arrival.

[0269] The QCL relationship means that a plurality of antenna ports have at least one same or similar communication characteristic, for example: carrier component 1 and carrier component 2 have a QCL relationship, which means that the antenna port transmitting the carrier component 1 and the antenna port transmitting the carrier component 2 have a QCL relationship; for another example: beam 1 and beam 2 have a QCL relationship, which means that the antenna port corresponding to the downlink signal of beam 1 and the antenna port transmitting the downlink signal corresponding to beam 2 have a QCL relationship.

[0270] Referring to FIG. 1, Figure 11b The frequency resource is a carrier component, one frequency resource group comprises two carrier components, which are carrier component 1 and carrier component 2, carrier component 1 and carrier component 2 have a QCL relationship, the network device determines that the distribution of the received power of carrier component 1 and carrier component 2 between the angles of arrival is similar according to the measurement parameters reported by the terminal device, and the network device determines that carrier component 1 and carrier component 2 have a QCL relationship in the spatial domain parameter, i.e., carrier component 1 and carrier component 2 have a spatial domain QCL relationship. Wherein, carrier component 1 and carrier component 2 can be adjacent carrier components, or can be non-adjacent carrier components.

[0271] S302: The network device sends configuration information of at least one frequency resource group to the terminal device, and the terminal device receives the configuration information of at least one frequency resource group sent by the network device, wherein the configuration information comprises information for indicating that the at least two frequency resources in the frequency resource group have a QCL relationship.

[0272] Specifically, the network device can send the configuration information of the at least one frequency resource group through any one of RRC signaling, a MAC-CE message, and DCI. For example, all parameters of the configuration information can be sent through one signaling, or the configuration information can be sent through multiple signalings, where each signaling sends only part of the parameters of the configuration information. The present embodiment is not limited in this regard.

[0273] In a possible implementation, the configuration information further includes:

[0274] at least one of a first-stage count value and a first-stage time window of the frequency resource group; and / or

[0275] at least one of a first-stage count value and a first-stage time window of each frequency resource in the frequency resource group.

[0276] In another possible implementation, the configuration information further includes:

[0277] at least one of a second-stage count value and a second-stage time window of the frequency resource group; and / or

[0278] at least one of a second-stage count value and a second-stage time window of each frequency resource in the frequency resource group.

[0279] In another possible implementation, the configuration information further includes a timing duration of the frequency resource group and a timing duration of each frequency resource in the frequency resource group.

[0280] The first-stage count value is a count value of a beam detection stage, and the second-stage count value is a count value of a beam recovery stage. The first-stage time window and the second-stage time window are time intervals of a preset duration. The first-stage time window is a time window of the beam detection stage, and the second-stage time window is a time window of the beam recovery stage. When the number of the frequency resource groups is multiple, the first-stage count value, the first-stage time window, the second-stage time window, the second-stage count value, and the timing duration of different frequency resource groups can be the same or different. The first-stage count value, the first-stage time window, the second-stage time window, the second-stage count value, and the timing duration of the frequency resource group can be associated with each frequency resource in the frequency resource group. For example, the first-stage count value of the frequency resource group is equal to a value accumulated by the first-stage count values of each frequency resource in the frequency resource group, or the first-stage count value of the frequency resource group is equal to the minimum first-stage count value corresponding to each frequency resource in the frequency resource group. Other parameters can also refer to the above association relationship, which is not described herein again.

[0281] It should be noted that at least one of the following: the first-stage count value, the first-stage time window, the second-stage time window, the second-stage count value, and the timing duration of the frequency resource group and each frequency resource within the frequency resource group can be pre-stored or pre-configured on the network device and the terminal device, or it can be configured by the network device and sent to the terminal device via signaling.

[0282] For example, referring to example S201, the carrier component group includes carrier component 1 and carrier component 2, which have a QCL relationship. The first-stage count value of the carrier component group is N11, the first-stage time window is W11, the second-stage count value is N12, and the timing duration is T11. The first-stage count value of carrier component 1 is N21, the first-stage time window is W21, the second-stage count value is N22, and the timing duration is T21. The first-stage count value of carrier component 1 is N31, the first-stage time window is W31, the second-stage count value is N32, and the timing duration is T31. N11 = N21 + N31, or N11 = min(N21, N31).

[0283] In one possible implementation, the configuration information further includes: an identifier of a frequency resource group, an identifier of a reference frequency resource within the frequency resource group, an identifier of each frequency resource within the frequency resource group, a mapping relationship between frequency resources and beams within the frequency resource group, and at least one beam indication information associated with each frequency resource within the frequency resource group.

[0284] The frequency resource group identifier uniquely identifies the frequency resource group. The reference frequency resource can be any frequency resource within the frequency resource group. For example, when the frequency resource is a carrier component, if a primary carrier component exists within the carrier component group, the reference frequency resource is the primary carrier component within that group; otherwise, if no primary carrier component exists, the reference frequency resource is any carrier component specified by the network device. The reference frequency resource identifier indicates the identity of the reference frequency resource, and the frequency resource identifier indicates the identity of the frequency resource. Each frequency resource within a frequency resource group is associated with at least one beam. In the case of multiple beams associated with a single frequency resource, these beams generally do not have a QCL relationship. Beam indication information indicates the identity of the beam, and includes at least one of the beam index, the beam's CSI-RS resource number, and the beam's SRS resource number. Optionally, the network device can also assign QCL identifiers to beams with QCL relationships among the beams associated with the frequency resource group to indicate frequency resources with QCL relationships within the frequency resource group.

[0285] For example, the identifiers of frequency resources within a frequency resource group are as follows: CC group#1: (CC#1, CC#2), where CC group#1 is the identifier of the frequency resource group, CC#1 is the identifier of carrier component 1, CC#2 is the identifier of carrier component 2, and carrier component 1 is the reference carrier component. Both carrier component 1 and carrier component 2 are associated with two beams, and the mapping relationship between carrier components and beams is represented as: (CC#1 BPL1, CC#1BPL2; CC#2BPL1, CC#2BPL2). Assuming that the beams indicated by CC#1BPL1 and CC#2BPL1 have a QCL relationship, network devices can directly notify the above QCL relationship, or they can assign a QCL identifier (QCL FLAG) to beams with a QCL relationship, for example: (CC#1BPL1 QCL FLAG, CC#1BPL2; CC#2BPL2), indicating that carrier 1 of carrier component 1 and carrier 1 of carrier component 2 have a QCL relationship. Here, BPL represents beam indication information.

[0286] In one possible implementation, the configuration information for the frequency resource group further includes:

[0287] At least one of the following: antenna port number, time-frequency resource location, and period of the downlink signal on each frequency resource within the frequency resource group.

[0288] The downlink signal configuration differs across different frequency resources. For example, the downlink signal period differs across frequency resources within a frequency resource group, with the downlink signal period on the reference frequency resource being shorter than that on non-reference frequency resources.

[0289] See Figure 11c The image shown is a schematic diagram of a carrier component structure. Figure 11c As can be seen, the carrier component group includes carrier component 1 and carrier component 2. Both carrier component 1 and carrier component 2 are associated with one beam. The beams of carrier component 1 and carrier component 2 have a QCL relationship, so the two beams have the same beam direction. Carrier component 1 and carrier component 2 are configured with downlink signals and control channels. The downlink signal of carrier component 1 and carrier component 2 have different time-frequency positions and periods.

[0290] S303: The network device transmits downlink signals on frequency resources corresponding to at least one frequency resource group using at least one beam, and the terminal device receives downlink signals from the network device on frequency resources corresponding to at least one frequency resource group using at least one beam.

[0291] Specifically, for any frequency resource within a frequency resource group, the network device transmits one or more downlink signals on each frequency resource. The downlink signals can be CSI-RS or SS blocks.

[0292] For example, according to the example of S202, the network device transmits one downlink signal on carrier component 1 and carrier component 2 respectively, and the terminal device receives one downlink signal on carrier component 1 and carrier component 2 respectively.

[0293] It should be noted that the network device can be one base station, and the base station transmits the downlink signal to the terminal device on the frequency resource group. The network device can also be multiple base stations, and each base station transmits the downlink signal to the terminal device on one or more frequency resources.

[0294] For example, the base station transmits downlink signal 1 to the terminal device on carrier component 1, and transmits downlink signal 2 to the terminal device on carrier component 2.

[0295] For another example, base station 1 transmits downlink signal 1 to the terminal device on carrier component 1, and base station 2 transmits downlink signal 2 to the terminal device on carrier component 2.

[0296] S304, the terminal device monitors the downlink signal.

[0297] The terminal device can monitor the downlink signal according to the beam detection rule indicated by the network device or the preconfigured beam detection rule. The terminal device can detect the beam through the signal quality parameter of the downlink signal on each frequency resource in the frequency resource group. The physical layer of the terminal device measures the signal quality parameter of the downlink signal, and in the case that the signal quality parameter of the downlink signal is less than the first threshold value, it is determined that the beam quality is poor, and in the case that the signal quality parameter of the downlink signal is greater than the second threshold value, it is determined that the beam quality is good. The signal quality parameter includes one or more of the downlink signal receiving power (RSRP), the downlink signal receiving quality (RSRQ), the received signal strength indication (RSSI), and the SNR.

[0298] In one possible implementation, the terminal device monitors the downlink signal, specifically including:

[0299] The terminal device continuously detects N1 times of poor beam quality, and determines that the beam associated with the frequency resource group fails.

[0300] Wherein, N1 is the first stage count value of the frequency resource group, the physical layer of the terminal device measures the signal quality parameters of all downlink signals of the frequency resource group, and when the physical layer of the terminal device detects that the signal quality parameters are less than the first threshold value, it is determined that the beam quality is poor. When the terminal device detects N1 times of poor beam quality, it is determined that the beam associated with the frequency resource group fails. Wherein, the beam associated with the frequency resource group failing means that one or more beams in the frequency resource group fail, and further, the beam associated with the frequency resource group failing can be the beam with QCL relationship in the beam associated with the frequency resource group.

[0301] For example, N1 = 3, the carrier component group includes carrier component 1 and carrier component 2, carrier component 1 is associated with carrier 1 and carrier 2, carrier component 2 is associated with carrier 3 and carrier 4, carrier 1 and carrier 3 have QCL relationship, carrier component 1 is configured with CSI-RS1, carrier component 2 is configured with CSI-RS2, the physical layer of the terminal device detects the signal quality parameters on CSI-RS1 and CSI-RS2, and when the signal quality parameters are less than the first threshold value, it is determined that the beam quality is poor. When 3 times of poor beam quality are continuously detected, the terminal device determines that carrier 1 and carrier 3 fail.

[0302] In another possible implementation, the terminal device determines that the beam associated with the frequency resource group fails when the terminal device detects that the signal quality parameters of the frequency resource group are less than the preset threshold value within the first stage time window W1.

[0303] Wherein, W1 is the first stage time window of the frequency resource group, and the first stage time window is the time window of the beam detection stage. The physical layer of the terminal device measures the signal quality parameters of all downlink signals on the frequency resource group multiple times within W1, and then averages the multiple measured signal quality parameters. If the average value is less than the preset threshold value, it is determined that the beam associated with the frequency resource group fails. Wherein, the beam associated with the frequency resource group failing means that one or more beams in the frequency resource group fail, and further, the beam associated with the frequency resource group failing can be the beam with QCL relationship in the beam associated with the frequency resource group.

[0304] For example, the carrier component group includes carrier component 1 and carrier component 2, carrier component 1 is associated with beam 1 and beam 2, carrier component 2 is associated with beam 3 and beam 4, beam 2 and beam 4 have QCL relationship, carrier component 1 is associated with downlink signal 1, and carrier component 2 is associated with downlink signal 2. The duration of the first stage time window W1 is 10 ms, the physical layer of the terminal device measures the signal quality parameters of downlink signal 1 and downlink signal 2 multiple times within the first stage time window W1 of 10 ms, averages the multiple measured signal quality parameters, and if the average value is less than the preset threshold value, it is determined that beam 2 and beam 4 fail.

[0305] In another possible implementation, the terminal device determines that the frequency resource group is associated with a beam failure when the terminal device continuously detects N1 times of poor beam quality within the first stage time window W1.

[0306] In the method, the physical layer of the terminal device measures the signal quality parameters of all downlink signals on the frequency resource group within the time window W1, and determines that 1 time of poor beam quality is detected when the signal quality parameter of any one of the downlink signals is less than the first threshold. The high layer of the terminal device determines that the frequency resource group is associated with a beam failure when the terminal device continuously detects N1 times of poor beam quality within the first stage time window W1. The beam failure associated with the frequency resource group indicates that one or more beams in the frequency resource group fail, and further, the beam failure associated with the frequency resource group can be a beam failure of beams having a QCL relationship in the beam associated with the frequency resource group.

[0307] In another possible implementation, the terminal device determines that the frequency resource group is associated with a beam failure when the terminal device continuously detects N1 times of poor beam quality of the frequency resource group within the first stage time window W1.

[0308] In the method, the physical layer of the terminal device measures the signal quality parameters of all downlink signals on the frequency resource group multiple times with the first stage time window W1 as the granularity, and then averages the multiple measured signal quality parameters. The current first stage time window beam quality is determined when the average is less than the preset threshold. The terminal device determines that the frequency resource group is associated with a beam failure when the terminal device continuously detects N1 times of poor beam quality according to the measurement method. The beam failure associated with the frequency resource group indicates that one or more beams in the frequency resource group fail, and further, the beam failure associated with the frequency resource group can be a beam failure of beams having a QCL relationship in the beam associated with the frequency resource group.

[0309] According to the beam detection method of the related parameters of the frequency resource group, the embodiments of the present application further include:

[0310] The terminal device determines that the frequency resource group is associated with a beam recovery success when the terminal device continuously detects N2 times of good beam quality.

[0311] In the formula, N2 is a second stage count value of the frequency resource group, the terminal device sends a beam recovery request to the network device in the case of a beam failure in a beam having a QCL relationship with a beam associated with the frequency resource group, the beam recovery request being used to recover the failed beam. The terminal device then measures a signal quality parameter of all downlink signals on the frequency resource group, and in the case that the signal quality parameter of any one downlink signal is greater than a second threshold value, the terminal device determines that 1 time of good beam quality is detected, and in the case that the terminal device continuously detects N2 times of good beam quality, it is determined that the above-mentioned failed beam recovery is successful.

[0312] In another possible implementation, in the case that a signal quality parameter of the frequency resource group is detected to be greater than a preset threshold in a second stage time window W2, it is determined that the beam associated with the frequency resource group recovers successfully.

[0313] In the formula, W2 is a second stage time window of the frequency resource group in a beam recovery stage, and a physical layer of the terminal device performs multiple measurements on a signal quality parameter of all downlink signals on the frequency resource group in the second stage time window W2, averages the multiple measured signal quality parameters, and if the average is greater than a preset threshold, it is determined that the beam having a QCL relationship in the frequency resource group recovers successfully.

[0314] In another possible implementation, in the case that N2 times of good beam quality are detected in the second stage time window W2, it is determined that the beam associated with the frequency resource group recovers successfully.

[0315] In the formula, a physical layer of the terminal device performs measurement on a signal quality parameter of all downlink signals on the frequency resource group in the second stage time window, and if the signal quality parameter of the downlink signal is greater than a second threshold value, it is determined that 1 time of good beam quality is detected, and in the case that the terminal device detects N2 times of good beam quality in W2, it is determined that the beam having a QCL relationship in the frequency resource group recovers successfully.

[0316] In another possible implementation, in the case that N2 times of good beam quality are detected in the second stage time window W2, it is determined that the beam associated with the frequency resource group recovers successfully.

[0317] In the formula, a physical layer of the terminal device performs multiple measurements on a signal quality parameter of all downlink signals on the frequency resource group in the second stage time window W2, and then averages the multiple measured signal quality parameters, and if the average is greater than a preset threshold, it is determined that the beam having a QCL relationship in the beam associated with the frequency resource group recovers successfully in the case that the terminal device continuously detects N2 times of good beam quality according to the above-mentioned measurement manner.

[0318] According to the above-mentioned beam recovery success procedure associated with the frequency resource group, the method further comprises:

[0319] Starting the timing operation of the timing duration T1 in the case of the beam failure associated with the frequency resource group;

[0320] Stopping the timing operation of the timing duration T1 in the case of the beam recovery success associated with the frequency resource group;

[0321] In the case of the timing operation timeout, judging the beam recovery failure associated with the frequency resource group.

[0322] In the case of the beam recovery success associated with the frequency resource group, the parameters such as the timing duration, the second stage count value, and the second stage time window are cleared.

[0323] In a possible implementation, the terminal device monitors the downlink signal, specifically comprising:

[0324] In the case of continuously detecting N1 times of the beam quality difference on the reference frequency resource, judging the beam failure associated with the reference frequency resource.

[0325] In the case of the signal quality parameter of the downlink signal on the reference frequency resource measured by the physical layer of the terminal device being less than the first threshold value, the terminal device determines that 1 time of the beam quality difference is detected, and in the case of the physical layer of the terminal device continuously detecting N1 times of the beam quality difference, the terminal device judges the beam failure associated with the reference frequency resource.

[0326] For example, the frequency resource is a carrier component, N1=3 carrier component groups include carrier component 1 and carrier component 2, carrier component 1 is a reference carrier component, carrier component 1 is associated with beam 1 and beam 2, carrier component 2 is associated with beam 3 and beam 4, carrier component 1 is configured with CSI-RS1, and carrier component 2 is configured with CSI-RS2. The physical layer of the terminal device measures the signal quality parameter of CSI-RS1, and in the case of the signal quality parameter of CSI-RS1 being less than the first threshold value, it is determined that 1 time of the beam quality difference is detected, and in the case of the physical layer of the terminal device continuously detecting 3 times of the beam quality difference, it is judged that the beam 1 and the beam 2 associated with the reference carrier component fail.

[0327] In another possible implementation, the terminal device monitors the downlink signal, specifically comprising:

[0328] In the case of detecting that the signal quality parameter of the reference frequency resource is less than a preset threshold value within the time window W1, judging the beam failure associated with the reference frequency resource.

[0329] The physical layer of the terminal device measures the signal quality parameter of the downlink signal on the reference frequency resource in the time window W1 multiple times, averages the multiple measured signal quality parameters, and determines that the beam associated with the reference frequency resource fails in the case that the averaged signal quality parameter is less than the first threshold.

[0330] In a possible implementation, the terminal device monitors the beams associated with the two frequency resources, specifically including:

[0331] In the case that N1 beam quality differences on the reference frequency resource are continuously detected in the time window W1, it is determined that the beam associated with the reference frequency resource fails.

[0332] The physical layer of the terminal device measures the signal quality parameter of the downlink signal on the reference frequency resource in the time window W1, and determines that 1 beam quality difference is detected in the case that the signal quality parameter is less than the first threshold. The physical layer of the terminal device continuously detects N1 beam quality differences, and determines that the beam associated with the reference frequency resource fails.

[0333] In another possible implementation, the terminal device detects the downlink signal, specifically including:

[0334] In the case that N1 times of the signal quality parameter of the reference frequency resource in the first stage time window W1 is continuously detected to be less than the preset threshold, it is determined that the beam associated with the reference frequency resource fails.

[0335] The physical layer of the terminal device measures the signal quality parameter of the downlink signal on the multiple reference frequency resources with the granularity of the first stage time window W1 multiple times, and then averages the multiple measured signal quality parameters. If the average value is less than the preset threshold, it is determined that the beam quality difference in the current first stage time window. In the case that N1 beam quality differences are continuously detected by the terminal device according to the above measurement method, it is determined that the beam associated with the reference frequency resource fails.

[0336] According to the above method for monitoring the beam based on the related parameters of the reference frequency resource, the configuration information further includes at least one of the second stage counting value N2 and the second stage time window W2 associated with the reference frequency resource. This embodiment further includes:

[0337] In the case that the beam associated with the reference frequency resource fails, if N2 beam quality good situations on the reference frequency resource are continuously detected, it is determined that the beam associated with the reference frequency resource recovers successfully.

[0338] In the case that the beam associated with the reference frequency resource fails, the physical layer of the terminal device measures a signal quality parameter of a downlink signal of the reference frequency resource, and in the case that the signal quality parameter is greater than a second threshold, the terminal device sends a synchronization indication to the higher layer, and in the case that the higher layer of the terminal device continuously receives N2 times of good beam quality, it is determined that the beam associated with the reference frequency resource is successfully recovered.

[0339] In the case that the beam associated with the reference frequency resource fails, the physical layer of the terminal device measures a signal quality parameter of a downlink signal of the reference frequency resource, and in the case that the signal quality parameter is greater than a second threshold, the terminal device sends a synchronization indication to the higher layer, and in the case that the higher layer of the terminal device continuously receives N2 times of good beam quality, it is determined that the beam associated with the reference frequency resource is successfully recovered.

[0340] In another possible implementation, the terminal device detects a downlink signal, specifically including:

[0341] In the case that N2 times of good beam quality of the reference frequency resource are detected in the second stage time window W2, it is determined that the beam associated with the reference frequency resource is successfully recovered.

[0342] In the case that N2 times of good beam quality of the reference frequency resource are detected in the second stage time window W2, it is determined that the beam associated with the reference frequency resource is successfully recovered.

[0343] In another possible implementation, the terminal device detects a downlink signal, specifically including:

[0344] In the case that N2 times of good beam quality of the reference frequency resource are detected in the second stage time window W2, it is determined that the beam associated with the reference frequency resource is successfully recovered.

[0345] In the case that N2 times of good beam quality of the reference frequency resource are detected in the second stage time window W2, it is determined that the beam associated with the reference frequency resource is successfully recovered.

[0346] According to the above-mentioned beam recovery success process associated with the reference frequency resource, the method further includes:

[0347] The configuration information further includes a timing duration T1 associated with the reference frequency resource;

[0348] The method further includes:

[0349] In the case that the beam failure associated with the reference frequency resource, starting the timing operation with a timing duration T1;

[0350] In the case that the beam recovery associated with the reference frequency resource succeeds, stopping the timing operation with the timing duration T1;

[0351] In the case that the timing operation times out, judging that the beam recovery associated with the reference frequency resource fails.

[0352] In a possible implementation, the configuration information further includes at least one of the first stage count value and the time window of each frequency resource in the frequency resource group.

[0353] In a possible implementation, the configuration information further includes the timing duration of each frequency resource in the frequency resource group.

[0354] Wherein, the monitoring of the terminal device on the beam associated with each frequency resource in the frequency resource group can refer to the above description of the monitoring on the reference frequency resource, which will not be repeated here.

[0355] Implementing the above embodiment, the network device sends the configuration information indicating that the frequency resource group has the QCL relationship to the terminal device, and sends the downlink signal on the frequency resource group, so that the terminal device can measure the downlink signals of multiple frequency resources having the QCL relationship according to the QCL relationship of the frequency resource group, thereby obtaining more measurement opportunities, and effectively improving the accuracy of beam detection and reducing the detection time relative to single-carrier beam detection.

[0356] Referring to Figure 12a is a flowchart of a communication method provided by an embodiment of the present application. In the embodiment of the present application, the method includes:

[0357] S401, the network device sends configuration information of at least one frequency resource group to the terminal device, and the terminal device receives the configuration information of at least one frequency resource from the network device.

[0358] Wherein, the network device can send the configuration information of at least one frequency resource group through any one of RRC signaling, MAC-CE message and DCI. Each frequency resource group includes at least two frequency resources, each frequency resource corresponds to at least one beam, and the configuration information includes the identification of each frequency resource group and the identification of each frequency resource. The frequency resources in the frequency resource group can be CC or BP. The frequency resources in each frequency resource group can have a QCL relationship or not.

[0359] S402, the network device transmits a downlink signal on a frequency resource corresponding to the at least one frequency resource group using at least one beam, and the terminal device receives the downlink signal on the frequency resource corresponding to the at least one frequency resource group through one beam.

[0360] In the frequency resource group, one or more downlink signals are configured for each frequency resource, and the network device transmits the downlink signal through the frequency resource group. The downlink signal can be an uplink reference signal, such as a sounding reference signal (SRS), or a downlink signal, such as a CSI-RS or an SS block.

[0361] S403, the terminal device detects a beam failure associated with a first frequency resource in the frequency resource group according to the downlink signal.

[0362] In the frequency resource group, one or more downlink signals are configured for each frequency resource, and the network device transmits the downlink signal through the frequency resource group. The downlink signal can be an uplink reference signal, such as a sounding reference signal (SRS), or a downlink signal, such as a CSI-RS or an SS block.

[0363] For example, according to the example of S301, the terminal device detects that beam 1 associated with carrier 1 fails.

[0364] S404, the terminal device transmits a beam recovery request on a second frequency resource in the frequency resource group.

[0365] In the frequency resource group, one or more downlink signals are configured for each frequency resource, and the network device transmits the downlink signal through the frequency resource group. The downlink signal can be an uplink reference signal, such as a sounding reference signal (SRS), or a downlink signal, such as a CSI-RS or an SS block.

[0366] In one possible implementation, the terminal device transmits the beam recovery request using a transmission resource on the second frequency resource, and the beam recovery request indicates the beam failure of the first frequency resource.

[0367] In one possible implementation, the terminal device learns multiple transmission resources associated with the downlink signal of the second frequency resource according to the above-mentioned association relationship, and transmits the beam recovery request according to the multiple transmission resources. The network device or the terminal device pre-stores or pre-configures the above-mentioned association relationship, so that the network device or the terminal device can learn the beam failure of the first frequency resource according to the transmission resource used by the received beam recovery request.

[0368] In a possible implementation, the association relationship is specifically as follows:

[0369] The transmission resource is associated with at least one of the following information:

[0370] an identifier of the downlink signal, an identifier of the frequency resource, an identifier of the frequency resource group, an identifier of the antenna port, an identifier of the antenna port group, and beam indication information.

[0371] In a possible implementation, the association relationship is specifically as follows:

[0372] In a case where k is 0, 1, 2, or 3, r n = 2k + (0 or / and 1) + n.

[0373] In a case where k is 4, 5, 6, or 7, r n = k + 4 + n.

[0374] wherein k is an index of the downlink signal of the frequency resource, n is an index of the frequency resource, and r n is an index of the transmission resource on the frequency resource.

[0375] In a possible implementation, the downlink signal is any one of a CSI-RS, an SRS, and a synchronization signal block (SS block).

[0376] It should be noted that the beam recovery method in the downlink direction described in this embodiment is also applicable to the beam recovery process in the uplink direction, i.e., the direction from the terminal device to the network device.

[0377] In a possible implementation, the configuration information includes at least one of the following:

[0378] at least one of a first-stage count value and a first-stage time window of the frequency resource group, and at least one of a second-stage count value, a second-stage time window, and a timing duration of the frequency resource group; and / or

[0379] at least one of a first-stage count value and a first-stage time window of each frequency resource in the frequency resource group, and at least one of a second-stage count value, a second-stage time window, and a timing duration of each frequency resource in the frequency resource group.

[0380] In a possible implementation, the configuration information further includes at least one of the following:

[0381] The identification of the frequency resource group, the identification of the reference frequency resource within the frequency resource group, the identification of each frequency resource within the frequency resource group, the mapping relationship between the frequency resources and the beams within the frequency resource group, and the beam indication information of at least one beam associated with each frequency resource within the frequency resource group, the beam indication information including at least one of a beam number and a downlink signal resource number.

[0382] In a possible implementation, the configuration information further includes:

[0383] At least one of an antenna port number, a time-frequency resource location, and a period of the downlink signal on each frequency resource within the frequency resource group.

[0384] In a possible implementation, the periods of the downlink signals on the frequency resource groups are different.

[0385] Referring to Figure 12b FIG. 1 shows a structure diagram of a carrier component, from Figure 11c It can be seen that the carrier component group includes a carrier component 1 and a carrier component 2, the carrier component 1 and the carrier component 2 are each associated with one beam, the beam of the carrier component 1 and the beam of the carrier component 2 do not have a QCL relationship, and thus the beam directions of the beam of the carrier component 1 and the beam of the carrier component 2 are different. The carrier component 1 and the carrier component 2 configure downlink signals and control channels, the time-frequency positions of the downlink signals of the carrier component 1 and the carrier component 1 are different but the periods are the same.

[0386] In a possible implementation, each beam has a QCL relationship.

[0387] In a possible implementation, the configuration information further includes:

[0388] QCL information of the beams having a QCL relationship in the beams associated with the frequency resource group and a QCL identifier of the beams having a QCL relationship in the beams associated with the frequency resource group.

[0389] In a possible implementation, the frequency domain resource is a carrier component (CC) or a bandwidth part (BP).

[0390] It should be noted that the descriptions and examples of the parameters included in the configuration information described above can refer to the descriptions in Figure 12a , and will not be described here.

[0391] In Figure 12a The method described in the description, when the terminal device detects a beam failure of one frequency resource within a frequency resource group, sends a beam recovery request on another frequency resource within the frequency resource group, so that the terminal can use multiple beams for beam recovery, thereby improving the probability of beam recovery.

[0392] It should be noted that,Figure 13 The apparatus 4 shown can implement Figure 11a In the embodiment shown, the apparatus 4 includes a processing unit 401 and a sending unit 402. The processing unit 401 is configured to configure at least one frequency resource group; wherein each frequency resource group includes at least two frequency resources. For example, the processing unit 401 performs the step of S301 in the method 300. Figure 11a The sending unit 402 is configured to send configuration information of the at least one frequency resource group to a terminal device; wherein the configuration information includes information that frequency resources within each frequency resource group have quasi co-location (QCL) relationship; and the sending unit 402 is further configured to send downlink signals on frequency resources corresponding to the at least one frequency resource group using at least one beam, wherein each frequency resource is associated with one beam. For example, the sending unit 402 performs the steps of S302 and S303 in the method 300. Figure 11a The apparatus 4 can be a network device, and the apparatus 4 can also be a field-programmable gate array (FPGA) that implements related functions, an application-specific integrated chip, a system on chip (SoC), a central processing unit (CPU), a network processor (NP), a digital signal processing circuit, a microcontroller unit (MCU), and can also use a programmable logic device (PLD) or other integrated chips.

[0393] When the apparatus is a chip, the receiving unit can be an input unit such as an input circuit or a communication interface; and the sending unit can be an output unit such as an output circuit or a communication interface. When the communication apparatus is a terminal device, the receiving unit can be a receiver (also referred to as a receiver); and the sending unit can be a transmitter (also referred to as a transmitter).

[0394] The method embodiments of the present application and Figure 11a The method embodiments of the present application and Figure 11a The method embodiments of the present application and

[0395] As shown in Figure 14 The present application also provides an apparatus 5.

[0396] In one possible design, the apparatus 5 is a network device, and the network device includes:

[0397] a memory 503, configured to store a program and data. The number of the memory can be one or more, and the type of the memory can be any form of storage medium. For example, the memory can be a random access memory (RAM) or a read only memory (ROM) or a flash memory. The memory 503 can be located in the terminal device or in the processor 501.

[0398] a processor 501, configured to execute the program code stored in the memory 503, and when the program code is executed, the processor 501 is configured to configure at least one frequency resource group; wherein each frequency resource group comprises at least two frequency resources, and each frequency resource is associated with at least one beam. For example, the processor 501 is configured to execute the steps of S301 in the method 100. Figure 11a

[0399] a transceiver 502, configured to transceive signals. The transceiver can be a separate chip, or a transceiving circuit in the processor 501, or an input / output interface. The transceiver can be at least one of a transmitter and a receiver. The transmitter is configured to execute the transmitting steps in the apparatus, and the receiver is configured to execute the receiving steps in the apparatus. Optionally, the transceiver 502 can further comprise a transmitting antenna and a receiving antenna. The transmitting antenna and the receiving antenna can be two separate antennas, or one antenna. The transceiver 502 is configured to send configuration information of the at least one frequency resource group to the terminal device; wherein the configuration information comprises information that the frequency resources in each frequency resource group have quasi-co-located (QCL) relationship; and use at least one beam to send a downlink signal on the frequency resources corresponding to the at least one frequency resource group. For example, the transceiver 502 is configured to execute the steps of S302 and S303 in the method 100. Figure 11a

[0400] The transceiver 502, the memory 503 and the processor 501 communicate with each other through an internal connection path, for example, through a bus connection.

[0401] In a possible design, the apparatus 5 can be a chip, for example, a communication chip in a network device, used to implement the related functions of the processor 501 in the network device. The chip can be a field programmable gate array, an application specific integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit, a microcontroller, or a programmable controller or other integrated chip. The chip can optionally comprise one or more memories, used to store program codes, which when executed, enable the processor to implement corresponding functions.

[0402] ​​The chips can be implemented by software, hardware, firmware, or any combination thereof, in whole or in part. When implemented by software, the chips can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions (also referred to as code or program). When the computer program instructions are loaded and executed on a computer, the processes or functions described in the 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 devices. 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 transferred from one website, computer, server, or data center to another website, computer, server, or data center through a wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or data storage device including one or more servers, data centers, etc. integrated with the medium. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0403] The method embodiments of the present application and Figure 11a are based on the same concept and have the same technical effects. For specific processes, refer to the description of the method embodiments of Figure 11a , which will not be repeated here.

[0404] It should be noted that Figure 15 The device 6 shown in the embodiments of Figure 11a includes a receiving unit 601 and a processing unit 602. The receiving unit 601 is configured to receive configuration information of at least one frequency resource group from a network device, and to receive a downlink signal on a frequency resource corresponding to the at least one frequency resource group by indicating a beam. Each frequency resource group includes at least two frequency resources, and the configuration information indicates that the frequency resources in each frequency resource have quasi-co-location (QCL) relationship. For example, the receiving unit 601 performs the steps of S302 and S303 in Figure 11a . The processing unit 602 is configured to monitor the downlink signal. For example, the processing unit 602 is configured to perform the steps of S304 and S305 in Figure 11aThe step of S304. The device 6 can be a terminal device, and the device 6 can also be a field-programmable gate array (FPGA) that implements related functions, an application-specific integrated chip, a system on chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processing circuit, a micro controller unit (MCU), and can also use a programmable logic device (PLD) or other integrated chips.

[0405] When the device is a chip, the receiving unit can be an input unit such as an input circuit or a communication interface, and the sending unit can be an output unit such as an output circuit or a communication interface. When the communication device is a terminal device, the receiving unit can be a receiver (also referred to as a receiver), and the sending unit can be a transmitter (also referred to as a transmitter).

[0406] The method embodiments of the present application and Figure 11a The method embodiments of the present application and Figure 11a The method embodiments of the present application and

[0407] As shown in Figure 16 The present application also provides a device 7.

[0408] In a possible design, the device 7 is a terminal device, and the terminal device includes:

[0409] The memory 703 is configured to store programs and data. The number of the memory can be one or more, and the type of the memory can be any form of storage medium. For example, the memory can be a random access memory (RAM) or a read only memory (ROM) or a flash memory, and the memory 703 can be located in the terminal device or in the internal of the processor 701.

[0410] The transceiver 702 is configured to receive configuration information of at least one frequency resource group from a network device, and to receive downlink signals on frequency resources corresponding to the at least one frequency resource group by indicating a beam. Each frequency resource group includes at least two frequency resources, and the configuration information indicates that the frequency resources in each frequency resource have quasi-co-location (QCL) relationship. For example, the transceiver 702 performsFigure 11a The transceiver 702 can be a separate chip, or a transceiver circuit in the processor 701, or an input / output interface. The transceiver 702 can be at least one of a transmitter and a receiver, the transmitter being configured to perform a transmitting step in the apparatus, and the receiver being configured to perform a receiving step in the apparatus.

[0411] The processor 701 is configured to execute the program code stored in the memory 703, and when the program code is executed, the processor 701 is configured to monitor the downlink signal. For example, the processor 701 executes the program code to monitor the downlink signal. Figure 11a The processor 701 is configured to execute the program code stored in the memory 703, and when the program code is executed, the processor 701 is configured to monitor the downlink signal. For example, the processor 701 executes the program code to monitor the downlink signal.

[0412] The transceiver 702, the memory 703, and the processor 701 communicate with each other through an internal connection path, for example, through a bus connection.

[0413] In a possible design, the apparatus 7 can be a chip, for example, a communication chip in a terminal device, configured to implement the related functions of the processor 701 in a network device. The chip can be a field programmable gate array, an application specific integrated chip, a system chip, a central processing unit, a network processing unit, a digital signal processing circuit, a micro controller, or a programmable controller or other integrated chip. The chip can optionally include one or more memories configured to store program code, which, when executed, causes the processor to implement corresponding functions.

[0414] The chips can be implemented by software, hardware, firmware, or any combination thereof, in whole or in part. When implemented by software, the chips can be implemented in the form of a computer program product in whole or in part. The computer program product includes one or more computer instructions (also referred to as code or program). When the computer program instructions are loaded and executed on a computer, the processes or functions described in the 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 devices. 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 transferred from one website, computer, server, or data center to another website, computer, server, or data center through a wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or data storage device including one or more servers, data centers, etc. integrated with the medium. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0415] The method embodiments of the present application and Figure 11a are based on the same concept and have the same technical effects. For specific processes, refer to the description of the method embodiments of the present application and Figure 11a , which will not be repeated here.

[0416] It should be noted that Figure 17 The device 8 shown in the embodiment of Figure 12a includes a receiving unit 801, a processing unit 802, and a sending unit 803. The receiving unit 801 is configured to receive configuration information of at least one frequency resource group and receive a downlink signal on a frequency resource corresponding to the at least one frequency resource group through at least one beam; each frequency resource group includes at least two frequency resources, each frequency resource corresponds to at least one beam, and the configuration information includes an identifier of each frequency resource group and an identifier of each frequency resource; for example, the receiving unit 801 performs the steps of S401 and S402 in Figure 12a .

[0417] The processing unit 802 is configured to instruct the sending unit 803 to send a beam recovery request on a second frequency resource in the frequency resource group when a first frequency resource in the frequency resource group is associated with a beam failure detected by the downlink signal. For example, the processing unit 802 performs the steps of S403 and S404 inFigure 12a In the step S403, the sending unit 803 performs Figure 12a The device 8 can be a terminal device, and the device 8 can also be a field-programmable gate array (FPGA) for implementing related functions, an application-specific integrated chip, a system on chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processing circuit, a micro controller unit (MCU), and can also be a programmable logic device (PLD) or other integrated chip.

[0418] When the communication device is a chip, the receiving unit can be an input unit such as an input circuit or a communication interface; and the sending unit can be an output unit such as an output circuit or a communication interface. When the communication device is a terminal device, the receiving unit can be a receiver (also referred to as a receiver); and the sending unit can be a transmitter (also referred to as a transmitter).

[0419] The method embodiments of the present application and Figure 12a The method embodiments of the present application and Figure 12a The method embodiments of the present application and

[0420] As shown in Figure 18 The present application also provides a device 9.

[0421] In a possible design, the device 9 is a terminal device, and the terminal device includes:

[0422] The memory 903 is configured to store programs and data. The number of the memory can be one or more, and the type of the memory can be any form of storage medium. For example, the memory can be a random access memory (RAM) or a read only memory (ROM) or a flash memory. The memory 903 can be located in the terminal device or in the processor 901.

[0423] The transceiver 902 is configured to receive configuration information of at least one frequency resource group, and receive a downlink signal on a frequency resource corresponding to the at least one frequency resource group through at least one beam; each frequency resource group includes at least two frequency resources, each frequency resource corresponds to at least one beam, and the configuration information includes an identifier of each frequency resource group and an identifier of each frequency resource. For example, the transceiver 902 performs the steps in S401, S402 and S404 in the method 400. Figure 12a The transceiver 902 can be a separate chip, or a transceiver circuit in the processor 901 or an input / output interface. The transceiver 902 can be at least one of a transmitter and a receiver, the transmitter is configured to perform a transmitting step in the apparatus, and the receiver is configured to perform a receiving step in the apparatus.

[0424] The processor 901 is configured to execute the program code stored in the memory 903, and when the program code is executed, the processor 901 is configured to instruct the transceiver 902 to send a beam recovery request on a second frequency resource in a frequency resource group, when a beam failure associated with the first frequency resource in the frequency resource group is detected according to the downlink signal. For example, the processor 901 performs the step in S403 in the method 400. Figure 12a

[0425] The transceiver 902, the memory 903 and the processor 901 communicate with each other through an internal connection path, for example, through a bus connection.

[0426] In a possible design, the apparatus 9 can be a chip, for example, a communication chip in a terminal device, which is configured to implement the related functions of the processor 901 in the network device. The chip can be a field programmable gate array, an application specific integrated chip, a system chip, a central processing unit, a network processor, a digital signal processing circuit, a microcontroller, or a programmable controller or other integrated chip. The chip can optionally include one or more memories for storing program codes, which, when executed, enable the processor to implement corresponding functions.

[0427] ​The chips can be implemented in whole or in part by software, hardware, firmware, or any combination thereof. When implemented in software, implementation can be in the form of a computer program product. The computer program product includes one or more computer instructions (also referred to as code or program). When the computer program instructions are loaded and executed on a computer, the processes or functions described in the embodiments of the present application are wholly or partially generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable apparatus. 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 transferred from one website, computer, server, or data center to another website, computer, server, or data center through a wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or data storage device such as one or more servers, data centers, etc. integrated with one or more media. The available medium can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)), etc.

[0428] Those of ordinary skill in the art can be aware that units and algorithm steps of each example described in combination with the embodiments disclosed herein can be implemented by electronic hardware, or a combination of computer software and electronic hardware. Whether the functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the present application.

[0429] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the above-described system, device and unit can refer to the corresponding processes in the foregoing method embodiments, which will not be described here.

[0430] In several embodiments provided in the present application, it should be understood that the disclosed system, device and method can be implemented by other manners. For example, the above-described device embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and in actual implementation, another division manner can be adopted, for example, a plurality of units or components can be combined or integrated into another system, or some features can be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, and can be electrical, mechanical or other forms.

[0431] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, i.e., can be located in one place or can be distributed on a plurality of network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment.

[0432] In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0433] In the above embodiments, all or part can be realized by software, hardware, firmware or any combination thereof. When realized by software, all or part can be realized in the form of a computer program product. The computer program product includes one or more computer instructions. When loaded and executed by a computer, the computer instructions produce the processes or functions described in the embodiments of the present application. 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 transmitted by the computer-readable storage medium. The computer instructions can be transmitted from one website, computer, server or data center to another website, computer, server or data center through a wired (such as coaxial cable, optical fiber, digital subscriber line (DSL)) or wireless (such as infrared, wireless, microwave, etc.) manner. The computer-readable storage medium can be any available medium that can be accessed by a computer or a data storage device such as a server, data center, etc. integrated with one or more available media. The available media can be a magnetic medium (such as a floppy disk, a hard disk, a magnetic tape), an optical medium (such as a DVD), or a semiconductor medium (such as a solid state disk (SSD)) and the like.

[0434] Those skilled in the art can understand that all or part of the processes in the above-mentioned method embodiments can be implemented by a computer program instructing relevant hardware to complete, the program can be stored in a computer readable storage medium, and the program can include the processes of the above-mentioned method embodiments when executed. The aforementioned storage medium includes ROM or random storage memory RAM, magnetic disc or optical disc and various storage code medium.

Claims

1. A communication method characterized by comprising: The method comprises: receiving configuration information of at least one frequency resource group, and receiving a downlink signal on a frequency resource corresponding to the at least one frequency resource group through at least one beam; wherein each frequency resource group comprises at least two frequency resources, and each frequency resource corresponds to at least one beam; in a case where a beam failure associated with a first frequency resource in the frequency resource group is detected according to the downlink signal, sending a beam recovery request on a second frequency resource in the frequency resource group.

2. The method of claim 1, wherein, The configuration information further comprises an association relationship between the downlink signal and a transmission resource of the frequency resource; The sending of the beam recovery request on the second frequency resource of the frequency resource group is specifically: sending the beam recovery request according to one or more transmission resources associated with the downlink signal of the first frequency resource.

3. The method of claim 2, wherein, The association relationship is specifically: an association relationship between the transmission resource and at least one of the following information: an identifier of the downlink signal, an identifier of the frequency resource, an identifier of the frequency resource group, an antenna port identifier, an antenna port group identifier, and beam indication information.

4. The method of claim 2 or 3, wherein, The downlink signal is a channel state information reference signal (CSI-RS) or a synchronization signal block (SS Block).

5. The method of any one of claims 1-4, wherein, The configuration information comprises an identifier of each frequency resource group and an identifier of each frequency resource.

6. A communication device, comprising: a receiving unit configured to receive configuration information of at least one frequency resource group, and receive a downlink signal on a frequency resource corresponding to the at least one frequency resource group through at least one beam; wherein each frequency resource group comprises at least two frequency resources, and each frequency resource corresponds to at least one beam; a sending unit configured to, in a case where a beam failure associated with a first frequency resource in the frequency resource group is detected according to the downlink signal, send a beam recovery request on a second frequency resource in the frequency resource group.

7. The apparatus of claim 6, wherein, The configuration information further comprises an association relationship between the downlink signal and a transmission resource of the frequency resource; The sending unit is specifically configured to send the beam recovery request according to one or more transmission resources associated with the downlink signal of the first frequency resource.

8. The apparatus of claim 7, wherein, The association relationship is specifically: an association relationship between the transmission resource and at least one of the following information: an identifier of the downlink signal, an identifier of the frequency resource, an identifier of the frequency resource group, an antenna port identifier, an antenna port group identifier, and beam indication information.

9. The apparatus of claim 7 or 8, wherein, The downlink signal is a channel state information reference signal (CSI-RS) or a synchronization signal block (SS Block).

10. The apparatus of any one of claims 6-9, wherein, The configuration information comprises an identifier of each frequency resource group and an identifier of each frequency resource.

11. A communications device, characterized by The communication device further comprises a processor and an interface circuit, the interface circuit is configured to receive a signal from another communication device outside the communication device and transmit the signal to the processor or send a signal from the processor to another communication device outside the communication device, and the processor is configured to implement the method according to any one of claims 1-5 through a logic circuit or an execution code instruction.

12. A computer-readable storage medium, characterized in that, The storage medium stores a computer program or instructions, and when the computer program or instructions are executed by the communication device, the method according to any one of claims 1-5 is implemented.

13. A computer program product, characterised in that, The computer program product comprises program instructions involved, which, when executed, implement the method according to any one of claims 1-5.

14. A chip, characterized by A computer program product comprising program instructions involved, which, when executed, implement the method according to any one of claims 1-5. A computer program product comprising program instructions involved, which, when executed, implement the method according to any one of claims 1-5.

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