WO2022193149A1

WO2022193149A1 - Beam determination method, beam determination device, and storage medium

Info

Publication number: WO2022193149A1
Application number: PCT/CN2021/081159
Authority: WO
Inventors: 李明菊
Original assignee: 北京小米移动软件有限公司
Priority date: 2021-03-16
Filing date: 2021-03-16
Publication date: 2022-09-22
Also published as: CN113196854B; CN113196854A

Abstract

The present disclosure relates to a beam determination method, a beam determination device, and a storage medium. The beam determination method comprises: in response to a terminal reporting a beam report, determining, on the basis of the beam report, a beam to be used. By means of the present disclosure, the beam to be used may be determined on the basis of the beam report, thereby reducing the beam determination delay, and reducing signaling overhead.

Description

Beam determination method, beam determination device and storage medium

technical field

The present disclosure relates to the field of communication technologies, and in particular, to a beam determination method, a beam determination device, and a storage medium.

Background technique

In the new wireless technology (New Radio, NR), for example, when the communication frequency band is in frequency range 2 (FR2), since the high-frequency channel attenuates rapidly, in order to ensure the coverage, it is necessary to use beam-based transmission and reception.

In the related art, the network device sends beam indication signaling, and the terminal determines the beam used for transmission or reception according to the beam indication signaling. The beam indication signaling includes medium access control (Medium Access Control, MAC) control element (Control Element, CE) signaling and downlink control signaling (Downlink Control Information, DCI). However, when the terminal updates the beam, it needs to determine whether to update the beam according to the beam indication signaling. For example, in order to improve the reliability of DCI, it is necessary to perform Hybrid Automatic Repeat request (HARQ) acknowledgment (ACK) feedback for DCI used for beam indication, which results in a longer beam update delay and signaling overhead. big.

SUMMARY OF THE INVENTION

To overcome the problems existing in the related art, the present disclosure provides a beam determination method, a beam determination device and a storage medium.

According to a first aspect of the embodiments of the present disclosure, there is provided a beam determination method, which is applied to a terminal. The beam determination method includes: in response to the terminal reporting a beam report, determining a to-be-used beam based on the beam report.

In an embodiment, the beam report includes a beam measurement result, and the to-be-used beam is determined based on the beam measurement result.

In an embodiment, the to-be-used beam is one or more beams selected according to the signal strength corresponding to the beam measurement result.

In an embodiment, in response to the beam report being reported in a non-beam group manner, the to-be-used beam is a beam with the strongest signal strength selected according to the signal strength corresponding to the beam measurement result.

In one embodiment, in response to the beam group-based method reporting, the to-be-used beam is a beam group with the strongest signal strength of the beam group selected according to the signal strength corresponding to the beam measurement result.

In one embodiment, in response to the beam reporting method reporting based on a beam group, the to-be-used beam is a beam with the strongest signal strength selected in one or more beam groups according to the signal strength corresponding to the beam measurement result. .

In one embodiment, the beam determination method further includes: in response to satisfying a beam use condition, using the to-be-used beam for communication.

In one embodiment, in response to satisfying the beam usage condition, using the to-be-used beam for communication includes:

In response to satisfying a first time condition, the to-be-used beam is used for communication, the first time condition being after a first time threshold after a beam report is reported.

In an embodiment, the beam determination method further includes: determining that the beam indication signaling is not received before the first time threshold.

In one embodiment, the beam determination method further includes: in response to receiving the beam indication signaling, using the beam indicated by the beam indication signaling for communication.

In an embodiment, the receiving the beam indication signaling includes: receiving the beam indication signaling within the first time threshold, and/or decoding the beam indicated by the beam indication signaling within the first time threshold .

In an implementation manner, using the beam indicated by the beam indication signaling to communicate includes: in response to satisfying the second time condition, using the beam indicated by the beam indication signaling to communicate.

In one embodiment, the meeting the second time condition includes at least one of the following:

In response to the beam indication signaling including the medium access control control unit, after receiving the second time threshold after the medium access control control unit; in response to the beam indication signaling including the downlink control information, after receiving the downlink control information After the third time threshold after the control information; in response to the beam indication signaling including downlink control information, and the terminal sending the hybrid automatic repeat request feedback for the downlink control information, the hybrid automatic repeat request is sent after the After a fourth time threshold after feedback.

In an implementation manner, using the beam indicated by the beam indication signaling for communication includes at least one of the following:

In response to the beam indication signaling including downlink control information, and the downlink control information schedules a designated channel and/or signal, between the time when the downlink control information is received and the time when the designated channel and/or signal is scheduled After the time interval is greater than the fifth time threshold, use the beam indicated by the beam indication signaling to transmit the designated channel and/or signal;

In response to the beam indication signaling including downlink control information, the downlink control information schedules a designated channel and/or signal, and the time when the downlink control information is received and the hybrid automatic repeat request feedback time for sending the downlink control information After the time interval between them is greater than the sixth time threshold, use the beam indicated by the beam indication signaling to transmit the HARQ feedback;

In response to the beam indication signaling including downlink control information, and the downlink control information schedules a designated channel and/or signal, after a seventh time threshold after the HARQ feedback of the downlink control information is sent, using the The beam indicated by the beam indication signaling transmits the designated channel and/or signal, and the hybrid automatic repeat request feedback.

In one embodiment, the beam determination method further includes: before at least one of the fifth time threshold, the sixth time threshold and the seventh time threshold, using the to-be-used beam to transmit the designation channel and/or signal, and the HARQ feedback.

According to a second aspect of the embodiments of the present disclosure, there is provided an apparatus for determining a beam, including:

The sending unit is configured to report the beam report; the processing unit is configured to determine the beam to be used based on the beam report.

In one embodiment, in response to satisfying the beam usage condition, the sending unit uses the to-be-used beam for communication.

In one embodiment, in response to satisfying a first time condition, the sending unit communicates using the to-be-used beam, and the first time condition is after a first time threshold after the beam report is reported.

In one embodiment, the processing unit is further configured to determine that beam indication signaling has not been received before the first time threshold.

In one embodiment, the beam determination apparatus further includes a receiving unit configured to receive beam indication signaling. In response to the receiving unit receiving the beam indication signaling, the transmitting unit communicates using the beam indicated by the beam indication signaling.

In an embodiment, in response to satisfying the second time condition, the sending unit performs communication using the beam indicated by the beam indication signaling.

In response to the beam indication signaling including downlink control information, and the downlink control information schedules a designated channel and/or signal, after a seventh time threshold after the HARQ feedback of the downlink control information is sent, using the The beam indicated by the beam indication signaling transmits at least one of the designated channel and/or signal and the hybrid automatic repeat request feedback.

In an implementation manner, before at least one of the fifth time threshold, the sixth time threshold and the seventh time threshold, the sending unit transmits the designated channel and/or the beam using the to-be-used beam signal, and the HARQ feedback.

According to a third aspect of the embodiments of the present disclosure, there is provided an apparatus for determining a beam, including:

processor; memory for storing processor-executable instructions;

Wherein, the processor is configured to: execute the beam determination method described in the first aspect or any implementation manner of the first aspect.

According to a fourth aspect of the embodiments of the present disclosure, there is provided a storage medium, where instructions are stored in the storage medium, and when the instructions in the storage medium are executed by a processor of a terminal, the terminal can execute the first aspect or the first aspect Aspect the beam determination method described in any one of the embodiments.

The technical solutions provided by the embodiments of the present disclosure may include the following beneficial effects: in response to the terminal reporting the beam report, determining the beam to be used based on the beam report, and determining the beam to be used after reporting the beam report, thereby reducing signaling of beam indications overhead, and can also reduce the delay of beam determination.

It is to be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present disclosure.

Description of drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the disclosure and together with the description serve to explain the principles of the disclosure.

FIG. 1 is a schematic diagram of a wireless communication system according to an exemplary embodiment.

Fig. 2 is a flow chart of a beam determination method according to an exemplary embodiment.

Fig. 3 is a flow chart of a beam determination method according to an exemplary embodiment.

Fig. 4 is a flow chart of a beam determination method according to an exemplary embodiment.

Fig. 5 is a flow chart of a beam determination method according to an exemplary embodiment.

Fig. 6 is a flow chart of a beam determination method according to an exemplary embodiment.

Fig. 7 is a flow chart of a beam determination method according to an exemplary embodiment.

Fig. 8 is a flow chart of a beam determination method according to an exemplary embodiment.

Fig. 9 is a flow chart of a beam determination method according to an exemplary embodiment.

Fig. 10 is a schematic time diagram of determining using a beam to be used for communication based on a first time threshold according to an exemplary embodiment.

Fig. 11 is a flow chart of a beam determination method according to an exemplary embodiment.

Fig. 12 is a schematic time diagram of determining a beam to be used for communication based on beam indication signaling according to an exemplary embodiment.

Fig. 13 is a flowchart illustrating a method for determining a beam according to an exemplary embodiment.

Fig. 14 is a block diagram of an apparatus for determining a beam according to an exemplary embodiment.

Fig. 15 is a block diagram of an apparatus for beam determination according to an exemplary embodiment.

Detailed ways

Exemplary embodiments will be described in detail herein, examples of which are illustrated in the accompanying drawings. Where the following description refers to the drawings, the same numerals in different drawings refer to the same or similar elements unless otherwise indicated. The implementations described in the illustrative examples below are not intended to represent all implementations consistent with this disclosure. Rather, they are merely examples of apparatus and methods consistent with some aspects of the present disclosure as recited in the appended claims.

The beam determination method provided by the embodiments of the present disclosure can be applied to the wireless communication system shown in FIG. 1 . Referring to FIG. 1 , the wireless communication system includes a terminal and a network device. The terminal is connected to the network device through wireless resources, and transmits and receives data.

It can be understood that the wireless communication system shown in FIG. 1 is only a schematic illustration, and the wireless communication system may also include other network devices, such as core network devices, wireless relay devices, and wireless backhaul devices, etc. Not shown in Figure 1. The embodiments of the present disclosure do not limit the number of network devices and the number of terminals included in the wireless communication system.

It can be further understood that the wireless communication system of the embodiment of the present disclosure is a network that provides a wireless communication function. Wireless communication systems can use different communication technologies, such as code division multiple access (CDMA), wideband code division multiple access (WCDMA), time division multiple access (TDMA) , frequency division multiple access (frequency division multiple access, FDMA), orthogonal frequency division multiple access (orthogonal frequency-division multiple access, OFDMA), single carrier frequency division multiple access (single Carrier FDMA, SC-FDMA), carrier sense Carrier Sense Multiple Access with Collision Avoidance. According to the capacity, speed, delay and other factors of different networks, the network can be divided into 2G (English: generation) network, 3G network, 4G network or future evolution network, such as 5G network, 5G network can also be called a new wireless network ( New Radio, NR). For convenience of description, the present disclosure will sometimes refer to a wireless communication network simply as a network.

Further, the network devices involved in the present disclosure may also be referred to as radio access network devices. The wireless access network equipment may be: a base station, an evolved node B (eNB), a home base station, an access point (AP) in a wireless fidelity (WIFI) system, a wireless relay A node, a wireless backhaul node, a transmission point (TP) or a transmission and reception point (TRP), etc., can also be a gNB in an NR system, or can also be a component or part of a device that constitutes a base station Wait. When it is a vehicle-to-everything (V2X) communication system, the network device may also be an in-vehicle device. It should be understood that, in the embodiments of the present disclosure, the specific technology and specific device form adopted by the network device are not limited.

Further, the terminal involved in the present disclosure may also be referred to as terminal equipment, user equipment (User Equipment, UE), mobile station (Mobile Station, MS), mobile terminal (Mobile Terminal, MT), etc. A device that provides voice and/or data connectivity. For example, the terminal may be a handheld device with a wireless connection function, a vehicle-mounted device, or the like. At present, some examples of terminals are: Smartphone (Mobile Phone), Pocket Personal Computer (PPC), PDA, Personal Digital Assistant (PDA), notebook computer, tablet computer, wearable device, or Vehicle equipment, etc. In addition, when it is a vehicle-to-everything (V2X) communication system, the terminal device may also be an in-vehicle device. It should be understood that the embodiments of the present disclosure do not limit the specific technology and specific device form adopted by the terminal.

In the present disclosure, the communication between the network device and the terminal is based on beams. In the related art, the network device sends beam indication signaling, and the terminal determines the beam used for transmission or reception according to the beam indication signaling. In R15/16, beam indication signaling includes MAC CE and DCI. MAC CE and DCI may be used to schedule designated channels and/or signals for transmission using beams. Among them, using a beam to transmit a certain channel or signal is to use the quasi co-location (Quasi co-location, QCL) parameter corresponding to the reference signal indicated by the transmission configuration indication state (TCI state) corresponding to the beam to transmit For a channel or signal, the beam corresponds to the QCL parameter of Type D, and the reference signal indicated by the TCI state includes at least one of the following: Synchronization Signal Block (SSB), Channel State Information Reference Signal (Channel State Information Reference Signal, CSI-RS), tracking reference signal (Tracking Reference Signal, TRS). And each channel or reference signal beam is indicated independently.

The MAC CE can be used to indicate the beams of the physical downlink control channel (PDCCH) and the physical uplink control channel (PUCCH). DCI may be used to indicate beams of a physical downlink shared channel (PDSCH) and a physical uplink shared channel (PUSCH). Further, beams of various reference signals, such as CSI-RS, sounding reference signal (sounding reference signal, SRS), TRS, etc., may also be indicated by MAC CE or DCI.

The concept of common beam (common beam) is proposed in R17. Common beam means that multiple channels or reference signals use the same beam, and use one beam indication signaling to indicate. That is, one beam indication signaling indicates a common beam for various channels or reference signals. For example, general beams can also be indicated by MAC CE or DCI. Since the DCI indicates a general beam, in order to improve the reliability of the DCI, it is necessary to perform Hybrid Automatic Repeat request (HARQ) correct response (ACK) feedback for the DCI used for beam indication, which leads to the determination of the beam to be used. The delay is large, and the signaling overhead is large.

In the related art, if the beam information cannot be obtained according to the beam indication signaling, a default beam may be used, and the default beam is a beam of a control resource set (CORESET) corresponding to a certain PDCCH.

In view of this, an embodiment of the present disclosure provides a beam determination method. After reporting the beam report, the terminal determines the beam to be used based on the beam report, and then can determine the beam to be used after reporting the beam report, thereby reducing the number of beam indications It can also reduce the delay of beam determination.

In an implementation manner, the beam to be used in the embodiment of the present disclosure may be an initially used beam determined by the terminal, or may be a beam determined by the terminal for updating.

Fig. 2 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 2, the method for determining a beam includes the following steps.

In step S11, the beam report is reported and the to-be-used beam is determined based on the beam report.

The beam report is a beam report generated based on a measurement result obtained by beam measurement.

In the beam determination method in the embodiment of the present disclosure, the beam to be used can be determined based on the reported beam report, thereby reducing the signaling overhead of beam indication and reducing the delay of beam determination.

It can be understood that, the embodiment of the present disclosure does not limit the sequence between the timing of determining the beam to be used and the timing of reporting the beam report. For example, in the embodiment of the present disclosure, the beam to be used may be determined before, after, or at the same time when the beam report is reported. Because the terminal can determine the beam report after completing the beam measurement, it can determine the beam to be used at this time, and when does the terminal determine the beam to be used, before reporting the beam report or after reporting the beam report, While reporting the beam report, there is no restriction here.

In the beam determination method provided by the embodiment of the present disclosure, the network device may configure a reporting manner of the beam report for the terminal. The reporting manner of the beam report may be a reporting manner based on a beam group (group) or a reporting manner based on a non-beam group (non group). In other words, the beam report can be a group-based beam report, a non-group-based beam report, or a non-group-based beam report.

Further, in the embodiment of the present disclosure, the number of beams included in the beam report reported by the terminal may be one or more.

In an implementation manner, in the beam determination method provided by the embodiment of the present disclosure, the number of beams included in the beam report may be determined based on the reporting manner of the beam report. For example, in the non-beam group-based reporting manner, the number of beams in the reported beam report is at least one, that is, the case where only one beam is reported. For another example, in the beam group-based reporting method, if simultaneous reception of multiple beams in a beam group is supported, the beams in the reported beam report can be beams in at least one beam group, that is, at least one beam group can be reported. A beam group or multiple beam groups, each beam group contains multiple beams. For another example, in the beam group-based reporting method, if simultaneous reception of multiple beams between beam groups is supported, the beams in the reported beam report may be multiple beam groups, and each beam group contains at least one beam, that is, Only two beam groups are reported, and each beam group includes one beam, or multiple beam groups can be reported, and each beam group includes multiple beams.

The beam determination method in this embodiment of the present disclosure may be performed by a terminal. The terminal performs beam measurement and reports a beam report based on the beam measurement result. Beam measurement results are included in the beam report. Therefore, the beam to be used can be determined based on the measurement results included in the beam report.

Fig. 3 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 3, the method for determining a beam includes the following steps.

In step S21, the beam to be used is determined based on the beam measurement result included in the beam report.

In the beam determination method provided by the embodiment of the present disclosure, the signal strength corresponding to the measurement result may include at least one of the following: Layer 1-Reference Signal Received Power (Layer1-Reference Signal Received

Power, L1-RSRP), Layer 1 Signal to Interference Noise Ratio (Layer1-Signal Interference Noise Ratio, L1-SINR), and Layer 1 Reference Signal Received Quality (L1-Reference Signal Received Quality, L1-RSRQ) and so on.

In the beam determination method provided by the embodiment of the present disclosure, the to-be-used beam may be determined based on the signal strength corresponding to the beam measurement result. In one embodiment, the beam to be used is one or more beams selected according to the signal strength corresponding to the beam measurement result.

Fig. 4 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 4, the method for determining a beam includes the following steps.

In step S31, one or more beams are selected as to-be-used beams according to the signal strength corresponding to the beam measurement result.

In the beam determination method provided by the embodiment of the present disclosure, the network device may configure a reporting manner of the beam report for the terminal. The reporting manner of the beam report may be a reporting manner based on a beam group, or a reporting manner based on a non-beam group. In other words, the beam report may be a beam group-based beam report, or a non-beam group-based beam report.

In one embodiment, in the beam determination method provided by the embodiment of the present disclosure, one or more beams may be selected as the to-be-used beams according to the signal strength corresponding to the beam measurement result based on the reporting method of the beam report.

In one embodiment, in response to the beam report being reported in a non-beam group manner, the to-be-used beam is a beam with the strongest signal strength selected according to the signal strength corresponding to the beam measurement result.

Fig. 5 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 5 , the method for determining a beam includes the following steps.

In step S41, in response to the beam report being reported in a non-beam group manner, according to the signal strength corresponding to the beam measurement result, a beam with the strongest beam signal strength is selected as the to-be-used beam.

It can be understood that, generally, when the terminal performs beam determination, one or more beams may be determined as the to-be-used beams, and one of the beams is a typical value.

In another embodiment, in response to the beam reporting method based on the beam group, the determination of the to-be-used beam may be performed based on the signal strength corresponding to the beam measurement result of the beam group.

The beam measurement result of the beam group may be understood as the measurement result corresponding to the beam with the strongest signal strength corresponding to the beam measurement result of the multiple beams included in the beam group as the measurement result of the beam group. Alternatively, the average value of the signal strengths corresponding to the beam measurement results of the multiple beams included in the beam group may be used as the measurement result of the beam group. The beam measurement result of the beam group may also have other calculation methods, which are not limited here.

In the related art, the terminal supports simultaneous reception of beams within a beam group, or supports simultaneous reception of beams between beam groups. Therefore, based on the beam group attributes supported by the terminal to simultaneously receive multiple beams, different methods can be used. The signal strength corresponding to the beam measurement result is determined, and the beam to be used is determined.

In one embodiment, if the terminal supports the beams received at the same time as the beams within the beam group, and the terminal cannot simultaneously receive the beams between the beam groups, the beam to be used may be the beam group signal selected according to the signal strength corresponding to the beam measurement result. The beam in the strongest beam group.

Fig. 6 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 6 , the method for determining a beam includes the following steps.

In step S51, in response to the beam group-based method reporting the beam report, according to the signal strength corresponding to the beam measurement result, a beam group with the strongest signal strength of the beam group is selected as the to-be-used beam.

In an example, for example, there are a total of 2 beam groups. The signal strengths corresponding to the beam measurement results of the beam groups are respectively determined for the two beam groups. The signal strength of the beam measurement result of the beam group may be understood as the measurement result corresponding to the beam with the strongest signal strength corresponding to the beam measurement result among the multiple beams included in the beam group. For example, beam group 1 includes beam 1 and beam 2, and beam 1 has a stronger signal strength than beam 2; beam group 2 includes beam 3 and beam 4, and beam 3 has a stronger signal strength than beam 4. Then the beam measurement result of beam group 1 is the signal strength of beam 1, and the beam measurement result of beam group 2 is the signal strength of beam 3. When the signal strength of beam 1 is stronger than that of beam 3, beam group 1 is selected as the beam group to be used, that is, beam 1 and beam 2 are selected as beams to be used. Alternatively, it may be the average value of the signal strengths corresponding to the beam measurement results of the multiple beams included in the beam group. For example, beam group 1 includes beam 1 and beam 2; beam group 2 includes beam 3 and beam 4. Then the beam measurement result of beam group 1 is the average value of the signal strength of beam 1 and the signal strength of beam 2, which is recorded as average value 1, and the beam measurement result of beam group 2 is the average value of the signal strength of beam 3 and the signal strength of beam 4. Values are recorded as mean 2. When the average value 1 is greater than the average value 2, the beam group 1 is selected as the to-be-used beam group, that is, the beam 1 and the beam 2 are selected as the to-be-used beams. In another embodiment, if the terminal supports the beams received at the same time as beams between beam groups, and the terminal cannot receive the beams in the beam group at the same time, the beam to be used may be the signal strength corresponding to the beam measurement result. The beam with the strongest signal strength is selected in the beam group.

Fig. 7 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 7 , the method for determining a beam includes the following steps.

In step S61, in response to the beam group-based method reporting the beam report, according to the signal strength corresponding to the beam measurement result, the beam with the strongest signal strength in each beam group is selected from one or more beam groups as the to-be-used beam.

In an example, for example, there are a total of 2 beam groups. For the two beam groups, respectively determine the beam with the strongest signal strength corresponding to the beam measurement result in the beam group. For example, beam group 1 includes beam 1 and beam 2, and beam 1 has a stronger signal strength than beam 2; beam group 2 includes beam 3 and beam 4, and beam 3 has a stronger signal strength than beam 4. Then beam 1 and/or beam 3 are selected as the beams to be used. In the beam determination method in the embodiment of the present disclosure, the beam to be used can be determined after the beam report is reported, thereby reducing the signaling overhead of beam indication and reducing the delay of beam determination.

Further, in the beam determination method provided by the embodiment of the present disclosure, after the to-be-used beam is determined based on the beam report, the to-be-used beam may be used for communication when conditions are satisfied.

Fig. 8 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 8, the method for determining a beam includes the following steps.

In step S71, in response to satisfying the beam usage condition, communication is performed using the beam to be used.

In the beam determination method provided by the embodiment of the present disclosure, the beam usage condition may be a time condition set based on time.

In an implementation manner, the embodiment of the present disclosure may determine the beam usage condition based on the time when the terminal reports the beam report. For example, a time threshold may be defined in an embodiment of the present disclosure. For the convenience of description, in this embodiment of the present disclosure, the beam usage condition determined based on the time when the terminal reports the beam report is referred to as the first time condition, and the time threshold may be referred to as the first time threshold.

In an implementation manner, in the embodiment of the present disclosure, the beam to be used may be used for communication under the condition that the first time condition is satisfied, and the first time condition is after the first time threshold after the beam report is reported, that is, it can also be understood as After the first time threshold, the beam to be used can be used for communication.

Fig. 9 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 9 , the method for determining a beam includes the following steps.

In step S81, in response to satisfying the first time condition, the beam to be used is used for communication, and the first time condition is after the first time threshold after the beam report is reported.

The starting position of the first time threshold in the embodiment of the present disclosure is the reporting time of the beam report. Assuming that the reporting time of the beam report is t0, and the time threshold is set to t1, when t1-t0 is greater than or equal to the first time threshold, the terminal adopts the new beam determined in the beam report based on time t0. Fig. 10 is a schematic time diagram of determining using a beam to be used for communication based on a first time threshold according to an exemplary embodiment. Referring to Fig. 10, the terminal sends a beam report at time t0, and the first time threshold is set to t1. In this case, whether to use the beam to be used for communication can be determined according to the first time threshold. In this embodiment of the present disclosure, the terminal may use the to-be-used beam as a new beam for communication at time t1. Before time t1, the to-be-used beam is not used for communication.

In the embodiment of the present disclosure, when the terminal uses the to-be-used beam determined based on the beam report for communication, it may be implemented without receiving the beam indication signaling. That is, in the embodiment of the present disclosure, before the beam uses the to-be-used beam determined based on the beam report for communication, it is determined that the beam indication signaling is not received before the first time threshold. That is, if the beam indication signaling that can be used to indicate a new beam is not received within the first time threshold, the terminal uses the beam to be used determined based on the beam report to communicate after it is greater than or equal to the first time threshold.

In the beam indication method provided by the embodiment of the present disclosure, in response to receiving the beam indication signaling, the beam indicated by the beam indication signaling may be used for communication.

Fig. 11 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 11 , the method for determining a beam includes the following steps.

In step S91, in response to receiving the beam indication signaling, communication is performed using the beam indicated by the beam indication signaling.

In the beam determination method provided by the embodiment of the present disclosure, the beam indication signaling may be received within the first time threshold, or may be received after the first time threshold. In an example, in the embodiment of the present disclosure, if a beam indication signaling that can be used to indicate a beam, such as MAC CE or DCI, is received within the first time threshold, communication is performed according to the new beam indicated by the beam indication signaling. Beam indication signaling indicates beams through TCI state or spatialrelationinfo.

In an implementation manner, the time when the terminal involved in the embodiment of the present disclosure receives the beam indication signaling for indicating the beam within the first time threshold may be, on the one hand, receiving the beam indication signaling within the first time threshold. and/or the time at which the beam indicated by the beam indication signaling is decoded within the first time threshold.

In the beam determination method provided by the embodiments of the present disclosure, if the network device determines that the to-be-used beam determined based on the beam report is not suitable for use as a new beam, for example, the beam is scheduled to other terminals, the network device may send beam indication signaling to the terminal , the beam that the terminal can use is indicated by the beam indication signaling. The terminal receives the beam indication signaling sent by the network device, and communicates based on the beam indicated by the beam indication signaling. This method can be understood as an optimized method of determining beams based on reporting reports in the embodiments of the present disclosure, that is, the method of indicating beams based on beam indication signaling replaces the method of determining beams according to beam reports. Therefore, in the embodiment of the present disclosure, if the beam indication signaling is received within the first time threshold, the timing of the first time threshold may be stopped, that is, after the end of the first time threshold, the new signal determined based on the beam report may not be used. Instead, the beams indicated by the beam indication signaling are used for communication.

Fig. 12 is a schematic time diagram of determining a beam to be used for communication based on beam indication signaling according to an exemplary embodiment. Referring to Figure 12, the terminal sends a beam report at time t0, the first time threshold is set to t1, and the time when the terminal receives the beam indication signaling such as MAC CE or DCI is t2. Among them, t2 is less than t1, in this case, the terminal can stop timing the first time threshold after time t2, but use the beam designation signal according to the beam designation signaling such as MAC CE or DCI received at time t2. to communicate with the indicated beam.

Further, in the beam determination method provided by the embodiment of the present disclosure, when the beam indicated by the beam indication signaling is used for communication, the beam usage that satisfies the communication using the beam indicated by the beam indication signaling can be determined based on a preset time rule. condition, hereinafter may be referred to as the second time condition. That is, in response to satisfying the second time condition, communication is performed using the beam indicated by the beam indication signaling.

Fig. 13 is a flowchart of a method for determining a beam according to an exemplary embodiment. As shown in Fig. 13 , the method for determining a beam includes the following steps.

In step S101, in response to satisfying the second time condition, communication is performed using the beam indicated by the beam indication signaling.

In the beam determination method provided by the embodiment of the present disclosure, the second time condition may be determined based on beam indication signaling. In an example, if the beam indication signaling is only used for beam indication signaling, the second time condition for communicating using the beam indicated by the beam indication signaling may be determined based on the time rule of the beam indication signaling.

In an implementation manner, in this embodiment of the present disclosure, the communication using the beam indicated by the beam indication signaling may be at least one of the following manners:

Manner 1: In response to the beam indication signaling including the MAC CE, after receiving the second time threshold after the MAC CE, use the beam indicated by the beam indication signaling to communicate.

Manner 2: In response to the beam indication signaling including the DCI, after a third time threshold after receiving the DCI, the beam indicated by the beam indication signaling is used for communication.

Mode 3: In response to the beam indication signaling including DCI and the terminal sending the HARQ ACK for the DCI, after a fourth time threshold after the HARQ ACK is sent, the beam indicated by the beam indication signaling is used for communication.

In the beam determination method provided by the embodiments of the present disclosure, if the beam indication signaling is DCI, and the DCI schedules a designated channel and/or signal, at least one of the following methods may be used to determine the beam indication signaling based on the time rule of the beam indication signaling. Communication is performed using the beam indicated by the beam indication signaling.

Manner 4: In response to the beam indication signaling including DCI and the DCI scheduling the designated channel and/or signal, after the time interval between the time when the DCI is received and the time when the designated channel and/or signal is scheduled is greater than the fifth time threshold , using the beam indicated by the beam indication signaling to transmit the designated channel and/or signal. Wherein, the designated channel and/or signal may be PDSCH, PUSCH, PUCCH or CSI-RS, SRS, etc., for example. In an example, if the time interval between the DCI and the PDSCH, PUSCH, PUCCH or CSI-RS, SRS, etc. scheduled by the DCI is greater than the fifth time threshold, then the PDSCH, PUSCH, PUCCH or CSI-RS, SRS, etc. scheduled by the DCI can be Communicate using the new beam indicated by the DCI.

Manner 5: After the beam indication signaling includes DCI, the DCI schedules the designated channel and/or signal, and the time interval between the time when the DCI is received and the time when the HARQ ACK of the DCI is sent is greater than the sixth time threshold, use the beam indication The beam indicated by the signaling transmits the HARQ ACK. In an example, if the time interval between the DCI and the HARQ ACK feedback for the DCI is greater than the sixth time threshold, the HARQ ACK may also be communicated using the beam indicated by the DCI.

Manner 6: In response to the beam indication signaling including DCI, and the DCI schedules the designated channel and/or signal, after the seventh time threshold after the HARQ ACK of the DCI is sent, use the beam indicated by the beam indication signaling to transmit the designated channel and/or signal. /or at least one of a signal and a HARQ ACK. In other words, the beam indicated by the beam indication signaling needs to be used after the seventh time threshold after the HARQ ACK transmission for this DCI.

In an implementation manner, in the beam determination method provided by the embodiments of the present disclosure, before at least one of the fifth time threshold, the sixth time threshold, and the seventh time threshold, etc., the transmission designation of the to-be-used beam determined based on the beam report may be used. channel and/or signal, and HARQ ACK.

In an example, if a DCI that can be used to indicate a new beam is received within the first time threshold, and the DCI schedules PDSCH, PUSCH, PUCCH or CSI-RS, SRS, etc., the PDSCH, PUSCH, PUCCH or CSI-RS and SRS after the first time threshold, but before the fifth time threshold, or the sixth time threshold, or the seventh time threshold, may also use the beam to be used determined based on the beam report for communication. For HARQ ACK feedback, if after the first time threshold but before the above-mentioned sixth time threshold, the to-be-used beam determined based on the beam report may also be used for communication.

It should be noted that, in the embodiments of the present disclosure, using a beam to transmit a certain channel or signal refers to using the QCL parameter indicated by the TCI state corresponding to the beam to transmit a certain channel or signal.

It should be further noted that, in this embodiment of the present disclosure, the various time thresholds involved in the above may be determined in at least one of the following manners:

a) network equipment instructions;

b) Protocol configuration;

c) The terminal reports based on capability;

d) After the terminal reports based on the capability, the network device will indicate again.

It should be further noted that the to-be-used beam determined in the beam determination method provided by the embodiment of the present disclosure (the beam determined based on the beam report and/or the beam determined based on the beam indication signaling) may be applicable to all communication transmissions, or applicable for certain communication transmissions. For example, some specific PDCCHs may use the beams determined based on the beam report for communication, while other communication transmission beams still use the beams indicated by the beam indication signaling for communication.

It should be further noted that those skilled in the art can understand that the various implementations/embodiments involved in the above embodiments of the present disclosure may be used in conjunction with the foregoing embodiments, or may be used independently. Whether used alone or in conjunction with the foregoing embodiments, the implementation principles are similar. In the implementation of the present disclosure, some of the embodiments are described in terms of implementations that are used together; of course, those skilled in the art can understand that such examples are not intended to limit the embodiments of the present disclosure.

The beam determination method provided by the embodiments of the present disclosure determines the to-be-used beam based on the beam report, and can determine the to-be-used beam after reporting the beam report, thereby reducing signaling overhead of beam indication and reducing beam determination delay.

Further, the beam determination method provided by the present disclosure can be understood as a beam determination method using beam-free indication signaling. After reporting the beam report, the terminal determines a new beam based on the beam measurement result indicated by the beam report, and when certain conditions are met. Starting to use a new beam reduces the signaling overhead of beam indication and reduces the delay in beam determination.

Based on the same concept, an embodiment of the present disclosure also provides an apparatus for determining a beam.

It can be understood that, in order to implement the above-mentioned functions, the beam determination apparatus provided by the embodiments of the present disclosure includes corresponding hardware structures and/or software modules for executing each function. Combining with the units and algorithm steps of each example disclosed in the embodiments of the present disclosure, the embodiments of the present disclosure can be implemented in hardware or a combination of hardware and computer software. Whether a function is performed by hardware or computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art may use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the technical solutions of the embodiments of the present disclosure.

Fig. 14 is a block diagram of an apparatus for determining a beam according to an exemplary embodiment. Referring to FIG. 14 , the beam determination apparatus 100 includes a sending unit 101 and a processing unit 102 .

The sending unit 101 is configured to report the beam report. The processing unit 102 is configured to determine the to-be-used beam based on the beam report.

In one embodiment, the beam report includes beam measurement results, and the to-be-used beam is determined based on the beam measurement results.

In one embodiment, the beam to be used is one or more beams selected according to the signal strength corresponding to the beam measurement result.

In one embodiment, in response to the beam group-based method reporting, the beam to be used is the beam with the strongest signal strength selected from one or more beam groups according to the signal strength corresponding to the beam measurement result.

In one embodiment, in response to the beam usage condition being satisfied, the sending unit 101 uses the to-be-used beam for communication.

In one embodiment, in response to satisfying the first time condition, the sending unit 101 uses the beam to be used for communication, and the first time condition is after the first time threshold after the beam report is reported.

In one embodiment, the processing unit 102 is further configured to determine that the beam indication signaling has not been received before the first time threshold.

In an embodiment, the beam determination apparatus 100 further includes a receiving unit 103, and the receiving unit 103 is configured to receive beam indication signaling. In response to the receiving unit 103 receiving the beam indication signaling, the transmitting unit 101 communicates using the beam indicated by the beam indication signaling.

In an embodiment, the receiving unit 103 receives the beam indication signaling, including: receiving the beam indication signaling within the first time threshold, and/or decoding the beam indication signaling within the first time threshold. beam.

In an embodiment, in response to satisfying the second time condition, the sending unit 101 uses the beam indicated by the beam indication signaling to communicate.

In one embodiment, satisfying the second time condition includes at least one of the following:

In response to the beam indication signaling including the MAC CE, after a second time threshold after the MAC CE is received. In response to beam indication signaling including DCI, after a third time threshold after DCI is received. In response to the beam indication signaling including DCI and the terminal sending HARQ ACK feedback for the DCI, after a fourth time threshold after sending the HARQ ACK feedback.

In an implementation manner, the communication using the beam indicated by the beam indication signaling includes at least one of the following:

In response to the beam indication signaling including DCI, and the DCI schedules the designated channel and/or signal, the beam is used after the time interval between the time the DCI is received and the time the designated channel and/or signal is scheduled is greater than a fifth time threshold The beam indicated by the signaling signaling transmits a designated channel and/or signal.

In response to the beam indication signaling comprising DCI, the DCI schedules the designated channel and/or signal, and the time interval between the time when the DCI is received and the time when the HARQ ACK feedback of the DCI is sent is greater than the sixth time threshold, the beam indication signaling is used The indicated beam transmits HARQ ACK feedback.

In response to the beam indication signaling including DCI, and the DCI schedules the designated channel and/or signal, after a seventh time threshold after sending the HARQ ACK feedback for the DCI, using the beam indicated by the beam indication signaling to transmit the designated channel and/or signal, and at least one of HARQ ACK feedback.

In an embodiment, before at least one of the fifth time threshold, the sixth time threshold and the seventh time threshold, the sending unit 101 transmits the designated channel and/or signal using the beam to be used, and the HARQ ACK feedback.

Regarding the apparatus in the above-mentioned embodiment, the specific manner in which each module performs operations has been described in detail in the embodiment of the method, and will not be described in detail here.

Fig. 15 is a block diagram of an apparatus for beam determination according to an exemplary embodiment. For example, apparatus 200 may be a mobile phone, computer, digital broadcast terminal, messaging device, game console, tablet device, medical device, fitness device, personal digital assistant, and the like.

15, apparatus 200 may include one or more of the following components: processing component 202, memory 204, power component 206, multimedia component 208, audio component 210, input/output (I/O) interface 212, sensor component 214, and Communication component 216 .

The processing component 202 generally controls the overall operation of the device 200, such as operations associated with display, phone calls, data communications, camera operations, and recording operations. The processing component 202 may include one or more processors 220 to execute instructions to perform all or some of the steps of the methods described above. Additionally, processing component 202 may include one or more modules that facilitate interaction between processing component 202 and other components. For example, processing component 202 may include a multimedia module to facilitate interaction between multimedia component 208 and processing component 202.

Memory 204 is configured to store various types of data to support operation at device 200 . Examples of such data include instructions for any application or method operating on the device 200, contact data, phonebook data, messages, pictures, videos, and the like. Memory 204 may be implemented by any type of volatile or non-volatile storage device or combination thereof, such as static random access memory (SRAM), electrically erasable programmable read only memory (EEPROM), erasable Programmable Read Only Memory (EPROM), Programmable Read Only Memory (PROM), Read Only Memory (ROM), Magnetic Memory, Flash Memory, Magnetic or Optical Disk.

Power components 206 provide power to various components of device 200 . Power components 206 may include a power management system, one or more power sources, and other components associated with generating, managing, and distributing power to device 200 .

The multimedia component 208 includes a screen that provides an output interface between the device 200 and the user. In some embodiments, the screen may include a liquid crystal display (LCD) and a touch panel (TP). If the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user. The touch panel includes one or more touch sensors to sense touch, swipe, and gestures on the touch panel. The touch sensor may not only sense the boundaries of a touch or swipe action, but also detect the duration and pressure associated with the touch or swipe action. In some embodiments, the multimedia component 208 includes a front-facing camera and/or a rear-facing camera. When the apparatus 200 is in an operation mode, such as a shooting mode or a video mode, the front camera and/or the rear camera may receive external multimedia data. Each of the front and rear cameras can be a fixed optical lens system or have focal length and optical zoom capability.

Audio component 210 is configured to output and/or input audio signals. For example, audio component 210 includes a microphone (MIC) that is configured to receive external audio signals when device 200 is in operating modes, such as call mode, recording mode, and voice recognition mode. The received audio signal may be further stored in memory 204 or transmitted via communication component 216 . In some embodiments, the audio component 210 also includes a speaker for outputting audio signals.

The I/O interface 212 provides an interface between the processing component 202 and a peripheral interface module, which may be a keyboard, a click wheel, a button, or the like. These buttons may include, but are not limited to: home button, volume buttons, start button, and lock button.

Sensor assembly 214 includes one or more sensors for providing status assessments of various aspects of device 200 . For example, the sensor assembly 214 can detect the open/closed state of the device 200, the relative positioning of components, such as the display and keypad of the device 200, and the sensor assembly 214 can also detect a change in the position of the device 200 or a component of the device 200 , the presence or absence of user contact with the device 200 , the orientation or acceleration/deceleration of the device 200 and the temperature change of the device 200 . Sensor assembly 214 may include a proximity sensor configured to detect the presence of nearby objects in the absence of any physical contact. Sensor assembly 214 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 214 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

Communication component 216 is configured to facilitate wired or wireless communication between apparatus 200 and other devices. Device 200 may access wireless networks based on communication standards, such as WiFi, 2G or 3G, or a combination thereof. In one exemplary embodiment, the communication component 216 receives broadcast signals or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 216 also includes a near field communication (NFC) module to facilitate short-range communication. For example, the NFC module may be implemented based on radio frequency identification (RFID) technology, infrared data association (IrDA) technology, ultra-wideband (UWB) technology, Bluetooth (BT) technology and other technologies.

In an exemplary embodiment, apparatus 200 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable A gate array (FPGA), controller, microcontroller, microprocessor or other electronic component implementation is used to perform the above method.

In an exemplary embodiment, there is also provided a non-transitory computer-readable storage medium including instructions, such as a memory 204 including instructions, executable by the processor 220 of the apparatus 200 to perform the method described above. For example, the non-transitory computer-readable storage medium may be ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, optical data storage device, and the like.

It should be further understood that in the present disclosure, "plurality" refers to two or more, and other quantifiers are similar. "And/or", which describes the association relationship of the associated objects, means that there can be three kinds of relationships, for example, A and/or B, which can mean that A exists alone, A and B exist at the same time, and B exists alone. The character "/" generally indicates that the associated objects are an "or" relationship. The singular forms "a," "the," and "the" are intended to include the plural forms as well, unless the context clearly dictates otherwise.

It is further understood that the terms "first", "second", etc. are used to describe various information, but the information should not be limited to these terms. These terms are only used to distinguish the same type of information from one another, and do not imply a particular order or level of importance. In fact, the expressions "first", "second" etc. are used completely interchangeably. For example, a first time condition may also be referred to as a second time condition, and similarly, a second time condition may also be referred to as a first time condition, without departing from the scope of the present disclosure.

It is further to be understood that, although the operations in the embodiments of the present disclosure are described in a specific order in the drawings, it should not be construed as requiring that the operations be performed in the specific order shown or the serial order, or requiring Perform all operations shown to obtain the desired result. In certain circumstances, multitasking and parallel processing may be advantageous.

Other embodiments of the present disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or techniques in the technical field not disclosed by the present disclosure . The specification and examples are to be regarded as exemplary only, with the true scope and spirit of the disclosure being indicated by the following claims.

It is to be understood that the present disclosure is not limited to the precise structures described above and illustrated in the accompanying drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

A beam determination method, characterized in that, applied to a terminal, the beam determination method includes:

In response to the terminal reporting a beam report, a beam to be used is determined based on the beam report.
The beam determination method according to claim 1, wherein the beam report includes a beam measurement result, and the to-be-used beam is determined based on the beam measurement result.
The beam determination method according to claim 2, wherein the to-be-used beam is one or more beams selected according to the signal strength corresponding to the beam measurement result.
The beam determination method according to claim 3, wherein, in response to the beam report being reported in a non-beam group manner, the to-be-used beam is the beam with the highest signal strength selected according to the signal strength corresponding to the beam measurement result. A strong beam.
The method for determining a beam according to claim 3, wherein, in response to the beam reporting method based on a beam group, the to-be-used beam is a beam group with the highest signal strength selected according to the signal strength corresponding to the beam measurement result. A strong beam group.
The method for determining a beam according to claim 3, wherein, in response to the beam reporting method based on a beam group, the to-be-used beam is a signal strength corresponding to a beam measurement result, in one or more beam groups Select the beam with the strongest signal strength in .
The beam determination method according to any one of claims 1 to 6, wherein the beam determination method further comprises:

In response to satisfying the beam usage condition, communication is performed using the to-be-used beam.
The beam determination method according to claim 7, wherein, in response to satisfying the beam use condition, using the to-be-used beam for communication comprises:

In response to satisfying a first time condition, the to-be-used beam is used for communication, the first time condition being after a first time threshold after a beam report is reported.
The beam determination method according to claim 8, wherein the beam determination method further comprises:

It is determined that beam indication signaling has not been received before the first time threshold.
The beam determination method according to any one of claims 1 to 8, wherein the beam determination method further comprises:

In response to receiving the beam indication signaling, communication is performed using the beam indicated by the beam indication signaling.
The beam determination method according to claim 10, wherein the receiving beam indication signaling comprises:

The beam indication signaling is received within the first time threshold, and/or the beam indicated by the beam indication signaling is decoded within the first time threshold.
The beam determination method according to claim 10 or 11, characterized in that, using the beam indicated by the beam indication signaling to communicate, comprising:

In response to satisfying the second time condition, communicating using the beam indicated by the beam indication signaling.
The beam determination method according to claim 12, wherein the satisfying the second time condition comprises at least one of the following:

in response to the beam indication signaling including a medium access control control element, after a second time threshold after receiving the medium access control control element;

in response to the beam indication signaling including downlink control information, after a third time threshold after receiving the downlink control information;

In response to the beam indication signaling including downlink control information and the terminal sending HARQ feedback for the downlink control information, after a fourth time threshold after sending the HARQ feedback.
The method for determining a beam according to claim 10, wherein the communication using the beam indicated by the beam indication signaling comprises at least one of the following:

In response to the beam indication signaling including downlink control information, and the downlink control information schedules a designated channel and/or signal, between the time when the downlink control information is received and the time when the designated channel and/or signal is scheduled After the time interval is greater than the fifth time threshold, use the beam indicated by the beam indication signaling to transmit the designated channel and/or signal;

In response to the beam indication signaling including downlink control information, the downlink control information schedules a designated channel and/or signal, and the time when the downlink control information is received and the hybrid automatic repeat request feedback time for sending the downlink control information After the time interval between them is greater than the sixth time threshold, use the beam indicated by the beam indication signaling to transmit the HARQ feedback;

In response to the beam indication signaling including downlink control information, and the downlink control information schedules a designated channel and/or signal, after a seventh time threshold after the HARQ feedback of the downlink control information is sent, using the The beam indicated by the beam indication signaling transmits at least one of the designated channel and/or signal and the hybrid automatic repeat request feedback.
The beam determination method according to claim 14, wherein the beam determination method further comprises:

before at least one of the fifth time threshold, the sixth time threshold and the seventh time threshold, using the to-be-used beam to transmit the designated channel and/or signal, and the hybrid automatic repeat request feedback.
A beam determination device, comprising:

a sending unit, configured to report the beam report;

and a processing unit configured to determine a beam to be used based on the beam report.
A beam determination device, comprising:

processor;

memory for storing processor-executable instructions;

Wherein, the processor is configured to: execute the beam determination method of any one of claims 1 to 15.
A storage medium, wherein instructions are stored in the storage medium, and when the instructions in the storage medium are executed by a processor of a terminal, the terminal can execute the method described in any one of claims 1 to 15. beam determination method.