WO2022253308A1 - Beam switching method, and apparatus - Google Patents

Abstract

The present application relates to the field of communication technology, and provided in embodiments thereof are a beam switching method and an apparatus. A terminal device determines S signals to be processed within a first time unit, at least two signals among the S signals having different priority levels, signal types of the S signals comprising one or more among the following: a synchronization signal block SSB, a control resource set CORESET, a sounding reference signal SRS, or a physical downlink shared channel PDSCH, and S being a positive integer greater than or equal to two; and beam switching and signal transmission or reception are performed within the first time unit according to a beam switching rule, wherein the beam switching rule is determined according to priority levels of the S signals. In the present application, when a terminal device performs beam switching at some first time unit, priority levels of signals are referenced, it can be ensured that a specific signal type is received or transmitted in a timely manner, the communication quality of the terminal device can consequently be ensured, and communication efficiency is improved.

Description

A beam switching method and device

Cross References to Related Applications

This application claims the priority of the Chinese patent application with the application number 202110624534.1 and the application name "A Beam Switching Method and Device" submitted to the China Patent Office on June 4, 2021, the entire contents of which are incorporated by reference in this application .

technical field

The embodiments of the present application relate to the field of communication technologies, and in particular, to a beam switching method and device.

Background technique

High frequencies typically use different analog beams to receive or transmit different types of signals. For example, a base station usually configures a wider analog beam to transmit a broadcast signal (for example, the broadcast signal is a synchronization signal block (synchronization signal block, SSB)). The base station usually configures a narrower analog beam to transmit data signals (such as channel sounding reference signal (SRS)), and the terminal equipment as the receiving end needs to perform beam switching to perform corresponding reception on the analog beam. . Considering the complexity of terminal implementation, the processing capability of the terminal equipment is usually limited to a certain extent. How to perform beam switching to ensure the communication quality of the terminal when the switching capability of the terminal is limited has become an urgent problem to be solved.

Contents of the invention

The present application provides a beam switching method and device, so as to ensure communication service quality when terminal equipment performs beam switching.

In the first aspect, the present application provides a beam switching method, which can be executed by a terminal device. The terminal device can be understood as a vehicle-mounted device, a mobile phone, an Internet of Things device, etc., and can also be understood as a module in the terminal device (for example, chip), which is not specifically limited in this application. The terminal device may determine S signals to be processed in the first time unit, at least two of the S signals have different priorities, and the signal categories of the S signals include one or more of the following: SSB, control resource set ( control-resource set, CORESET), SRS or physical downlink shared channel (physical downlink shared channel, PDSCH), S is a positive integer greater than or equal to 2; in the first time unit, beam switching is performed according to the beam switching rule and signal The beam switching rule is determined according to the priorities of the S signals for sending or receiving.

In the present application, the first time unit may be one of a time slot, a symbol, a symbol group, a subframe, and a radio frame, and may also be other time domain resource units, which are not specifically limited in this application. Usually, the number of beam switching that a terminal device can support in a time unit is limited, such as 2 or 4 times, but a terminal device may send or receive multiple signals in a time unit, and different signals may pass through different beams It is sent or received, so beam switching will occur in a time unit. If the signals are not differentiated or the beams are not switched to send or receive different signals, the signal-to-noise ratio of the received signal may be reduced, the performance of the system may be reduced, the communication requirements of terminal devices cannot be met, and the user experience may be reduced. This application fully considers the number of beam switching supported by the terminal device in the first time unit and the priority of each signal in the first time unit, and flexibly adjusts the beam switching rules according to the priority of each signal, which can ensure the communication service quality of the terminal device. At the same time, it can also improve the service experience of users.

In an optional manner, the first time unit includes a plurality of preset switching times, and the terminal device can select N target switching times from the multiple preset switching times according to the priorities of the S signals, and the target The terminal device performs beam switching at the switching moment, N is less than or equal to the number of beam switching supported by the terminal device in the first time unit, N is less than or equal to S, and N is a positive integer.

In this application, since the priority levels of the S signals in the first time unit are different, and different signals may be sent or received through different beams, the terminal device can judge how many preset switching moments may exist in the first time unit based on this (that is, the beam switching time), for example, there are 5 signals, and the corresponding preset switching time may be 5 or less than 5, and the present application does not specifically limit the preset switching time existing in the first time unit. quantity. In the case of determining the beam priority and the number of beam switching times that may be supported in the first time unit, the terminal device selects the preset switching time corresponding to the signal with a higher priority as the target switching time, and performs beam switching , in this manner, the communication service quality of the terminal device can be guaranteed.

In an optional manner, different preset switching times are indicated by different time sequence numbers; the values of the time sequence numbers are associated with the switching sequence of the beam switching information.

In an optional manner, the time sequence number corresponding to the preset switching time T is T, the number of beam switching supported by the first time unit is C, and both T and C are positive integers; if T is less than or equal to C, determine The preset switching time T is the target switching time; or, if T is greater than C, it is determined that the preset switching time N is not the target switching time.

In an optional manner, if T is greater than C, the signal corresponding to the preset switching time T is sent or received according to the first beam at the preset switching time T; The beam corresponding to the switching time of the adjacent target.

In the embodiment of this application, it is assumed that the first time unit determines three signals, namely signal 1, signal 2, and signal 3. The priority of signal 3 is higher than that of signal 2, and the priority of signal 2 is higher than that of signal 1. The first time unit exists There are 3 preset switching moments, which appear before sending or receiving signal 1, signal 2 and signal 3 respectively. According to the priority of the signal in the first time unit, the preset switching time before sending or receiving signal 3 can be set as preset switching time 1, and the preset switching time before sending or receiving signal 2 can be set as preset switching time At time 2, the preset switching time before sending or receiving signal 1 is set as preset switching time 3 . In addition, it is assumed that the number of times of beam switching supported by the first time unit is 2, among which, 1 is less than 2, then at the preset switching time 1, the preset beam 3 can be sent, or the signal 3 can be received; 2 is equal to 2, then the preset Switching time 2 is transmitted according to preset beam 2, or signal 2 is received; 3 is greater than 2, then beam switching is not performed at preset switching time 3, and signal 1 can be transmitted or received according to preset beam 3 or preset beam 2.

In an optional manner, the terminal device may select M beams according to the priorities of the S signals, perform beam switching among the M beams, and use the M beams for sending, and/or, receive the S signals, M is an integer, and M is smaller than S.

In this embodiment of the present application, the terminal device selects M beams in the first time unit, where M is less than or equal to the number of beam switching times supported by the terminal device in the first time unit.

In an optional manner, the target switching moment is located in the time domain resource of the low priority signal.

In the embodiment of the present application, the target switching time is located in the time-domain resource of the low-priority signal, which can ensure accurate reception or transmission of the high-priority signal, and can ensure the communication quality of the terminal device.

In an optional manner, the signal categories of the S signals include: SSB, CORESET, SRS and PDSCH; the priority of SSB is higher than that of CORESET; the priority of CORESET is higher than that of SRS; the priority of SRS is higher than that of PDSCH. The priorities of different types of signals may be determined through configuration information of the network device, or determined independently by the terminal device, which is not specifically limited in this application.

In an optional manner, the priorities of the S signals can be configured through configuration information.

In an optional manner, the configuration information may also be used to configure sending beams or receiving beams of L signals, where the L signals are one or more of the S signals, and L is less than or equal to S. By configuring the receiving and sending beams of the signal through the configuration information, the terminal device does not need to determine how to switch the beam in the first time unit according to the priority of the signal. In this way, the data processing pressure of the terminal device can be reduced and the data processing efficiency can be improved.

In an optional manner, the configuration information is carried in the following signaling: radio resource control (radio resource control, RRC), or media access control (media access control control element, MAC CE), or downlink control information ( downlink control information, DCI).

In an optional manner, the configuration information is activated or deactivated through a value of a preset indication field in the DCI.

In an optional manner, the preset indication field is 1 bit or multiple bits.

In an optional manner, the types of the S signals may include one or more of the following: SSB, CORESET, channel state information reference signal (channel state information reference signal, CSI-RS), SRS, physical uplink Control channel (physical uplink control channel, PUCCH), physical uplink shared channel (physical uplink shared channel, PUSCH) and PDSCH. The present application is only illustratively illustrated here, and more types of signals may be included in actual applications, and the present application does not illustrate one by one here. Usually SSB has the highest priority level, followed by CORESET or CSI-RS, followed by PUCCH, SRS, PUSCH, and finally PDSCH. Whether the RS is periodic or aperiodic, and whether it is semi-persistent or not, the priority of the signal may be adjusted, and the priority of the signal corresponding to the information carried by the PUSCH is also different. This application does not specifically limit it here. How to define the priority level of the signal.

In a second aspect, the present application provides a communication device, including: a processing unit and an input and output unit.

Wherein, the processing unit is used to determine the S signals to be processed in the first time unit, at least two of the S signals have different priorities, and the signal categories of the S signals include one or more of the following: synchronization signal Block SSB, control resource set CORESET, channel sounding reference signal SRS or physical downlink shared channel PDSCH, S is a positive integer greater than or equal to 2; the input and output unit is used to perform beam switching according to the beam switching rule within the first time unit And to send or receive signals, the beam switching rule is determined according to the priorities of the S signals.

In an optional manner, the first time unit includes multiple preset switching times, and the beam switching rule includes: selecting N target switching times from the multiple preset switching times according to the priorities of the S signals, and Beam switching is performed at the target switching time, N is less than or equal to the number of beam switching supported by the terminal device in the first time unit, N is less than or equal to S, and N is a positive integer.

In an optional manner, the first time unit includes a plurality of preset switching times, and the communication device may select N target switching times from the multiple preset switching times according to the priorities of the S signals, and the target The terminal device performs beam switching at the switching moment, and N is less than or equal to the number of beam switching times supported by the terminal device in the first time unit.

In an optional manner, different preset switching times are indicated by different time sequence numbers; the values of the time sequence numbers are associated with the switching sequence of the beam switching information.

In an optional manner, the time sequence number corresponding to the preset switching time T is T, the number of beam switching supported by the first time unit is C, and both T and C are positive integers; if T is less than or equal to C, determine The preset switching time T is the target switching time; or, if T is greater than C, it is determined that the preset switching time N is not the target switching time.

In an optional manner, if T is greater than C, the signal corresponding to the preset switching time T is sent or received according to the first beam at the preset switching time T; The beam corresponding to the switching time of the adjacent target.

In an optional manner, the input and output unit is specifically configured to: select M beams according to the priorities of the S signals, perform beam switching among the M beams, and use the M beams for transmission, and/or, receive S signals, M is an integer, and M is smaller than S.

In an optional manner, the priorities of the S signals are configured through configuration information.

In an optional manner, the signal categories of the S signals include: SSB, CORESET, SRS and PDSCH; the priority of SSB is higher than that of CORESET; the priority of CORESET is higher than that of SRS; the priority of SRS is higher than that of PDSCH.

In an optional manner, the configuration information is also used to configure a sending beam or a receiving beam for L signals, where the L signals are one or more of the S signals, and L is less than or equal to S.

In an optional manner, the configuration information is carried in the following signaling: RRC, or MAC CE, or DCI.

In an optional manner, the configuration information is activated or deactivated through a value of a preset indication field in the DCI.

In an optional manner, the preset indication field is 1 bit or multiple bits.

In an optional manner, the input and output unit is used to: select M beams according to the priority of S signals, perform beam switching between M beams, and M beams are used for transmission, and/or, receive S signals, M is a positive integer, and M is smaller than S.

In an optional manner, the target switching moment is located in the time domain resource of the low priority signal.

It should be understood that the input and output unit may be called a transceiver unit, a communication unit, etc., and when the communication device is a terminal device, the input and output unit may be a transceiver; the processing unit may be a processor. When the communication device is a module (such as a chip) in the terminal equipment, the input and output unit can be an input and output interface, an input and output circuit or an input and output pin, etc., and can also be called an interface, a communication interface or an interface circuit etc.; the processing unit may be a processor, a processing circuit or a logic circuit and the like.

In a third aspect, the present application provides a communication device, including at least one processor. When the device is running, the processor executes a computer program (which can also be code or instruction), so that the communication device performs the above-mentioned first aspect or The method of the embodiments of the first aspect.

In an optional manner, the communication device further includes a memory; the memory is used to store computer programs.

In an optional manner, the memory and the processor may be integrated in the same chip or device, or may be independent chips, which are not specifically limited in this application.

In a fourth aspect, the present application also provides a computer-readable storage medium, where computer-readable instructions are stored in the computer-readable storage medium, and when the computer-readable instructions are run on a computer, the computer executes The method described in one aspect or any possible design of the first aspect.

In a fifth aspect, the present application provides a computer program product containing instructions, which, when run on a computer, causes the computer to execute the above-mentioned first aspect or the method of each embodiment of the first aspect.

In a sixth aspect, the present application provides a system-on-a-chip, which includes a processor and may further include a memory, configured to implement the method described in the above-mentioned first aspect or any possible design of the first aspect. The system-on-a-chip may consist of chips, or may include chips and other discrete devices.

In a seventh aspect, the present application provides a communication system, the system includes terminal equipment and network equipment, and the communication system is used to implement the method described in the first aspect or any possible design of the first aspect .

For the technical effects that can be achieved from the second aspect to the seventh aspect, please refer to the description of the technical effects that can be achieved by the corresponding possible design solutions in the first aspect, and the present application will not repeat them here.

Description of drawings

FIG. 1 shows a schematic diagram of a communication system provided by an embodiment of the present application;

Fig. 2 shows a schematic diagram of a beam switching method;

FIG. 3 shows a schematic flowchart of a beam switching method provided by an embodiment of the present application;

FIG. 4 shows a schematic diagram of a method for determining the number of times of beam switching provided by an embodiment of the present application;

FIG. 5 shows a schematic diagram of a preset switching time used in an embodiment of the present application;

FIG. 6 shows a schematic diagram of the target switching time provided by the embodiment of the present application;

FIG. 7 shows a schematic diagram of beam switching provided by an embodiment of the present application;

FIG. 8 shows a schematic diagram of beam switching provided by an embodiment of the present application;

FIG. 9 shows a schematic diagram of beam switching provided by an embodiment of the present application;

FIG. 10 shows a schematic diagram of beam switching provided by an embodiment of the present application;

FIG. 11 shows a schematic structural diagram of a beam switching device provided by an embodiment of the present application;

FIG. 12 shows a schematic structural diagram of a communication device provided by an embodiment of the present application;

FIG. 13 shows a schematic structural diagram of a communication device provided by an embodiment of the present application.

Detailed ways

In order to make the purpose, technical solution and advantages of the application clearer, the application will be further described in detail below in conjunction with the accompanying drawings. The specific operation methods in the method embodiments can also be applied to the device embodiments or system embodiments. Wherein, in the description of the present application, unless otherwise specified, "plurality" means two or more. Therefore, the implementation of the device and the method can refer to each other, and the repetition will not be repeated.

The communication method provided in the embodiment of the present application may be applied to a 5th generation (5th generation, 5G) communication system or various future communication systems. Specifically, for example, the three most typical communication scenarios of the 5G communication system are enhanced mobile broadband (eMBB), massive machine type communication (mMTC) and ultra reliable low latency communication. , URLLC). This application can also be applied in long term evolution (long term evolution, LTE), new wireless unlicensed technology (NR-Unlicensed), wireless fidelity (wireless fidelity, Wi-Fi), side link communication (sidelink, SL), In wireless systems such as next-generation communication systems.

Figure 1 illustrates a communication system 100 suitable for use in the present application. The communication system 100 includes a network device 110 , a terminal device 120 and a terminal device 130 . The network device 110 can send a signal to the terminal device 120 or the terminal device 130 through the beam, and the terminal device 120 or the terminal device 130 can also receive the signal from the network device 110 through the corresponding beam. This process can be understood as the transmission of downlink signals. Correspondingly, the terminal device 120 or the terminal device 130 can send a signal to the network device 110 through the beam, and the network device 110 can receive the signal from the terminal device 120 or the terminal device 130 through the corresponding beam, and this process can be understood as the transmission of an uplink signal.

Wherein, the network device is a device deployed in a wireless access network to provide a wireless communication function for a terminal device. Network equipment A device with wireless transceiver function or a chip that can be set on the device, including but not limited to: evolved node B (evolved node B, eNB), radio network controller (radio network controller, RNC), node B (node B, NB), base station controller (base station controller, BSC), base transceiver station (base transceiver station, BTS), home base station (for example, home evolved NodeB, or home Node B, HNB), baseband unit (baseband unit, BBU), wireless fidelity (wireless fidelity, WIFI) system access point (access point, AP), wireless relay node, wireless backhaul node, transmission point (transmission and reception point, TRP or transmission point, TP), etc., can also be a gNB in a 5G (such as NR) system, or, a transmission point (TRP or TP), one or a group (including multiple antenna panels) antenna panels of a base station in a 5G system, or, also It may be a network node constituting a gNB or a transmission point, such as a baseband unit (BBU), or a distributed unit (distributed unit, DU), or a satellite, etc.

In some deployments, a gNB may include a centralized unit (CU) and a DU. The gNB may also include a radio unit (radio unit, RU). CU implements some functions of gNB, DU implements some functions of gNB, for example, CU implements RRC, packet data convergence protocol (packet data convergence protocol, PDCP) layer functions, DU implements radio link control (radio link control, RLC) , Media access control (media access control, MAC) and physical (physical, PHY) layer functions. Since the information of the RRC layer will eventually become the information of the PHY layer (that is, sent through the PHY layer), or converted from the information of the PHY layer, under this framework, high-level signaling, such as RRC layer signaling or The PDCP layer signaling can also be considered to be sent by the DU, or sent by the DU+RU. It can be understood that the access network device may be a CU node, or a DU node, or a device including a CU node and a DU node. In addition, the CU can be divided into network devices in the access network RAN, and the CU can also be divided into network devices in the core network CN, which is not limited here.

The terminal equipment involved in the embodiments of the present application, which can also be referred to as a terminal, is an entity on the user side for receiving or transmitting signals, and is used for sending uplink signals to network equipment or receiving downlink signals from network equipment. Including devices that provide voice and/or data connectivity to a user may include, for example, a handheld device with wireless connectivity, or a processing device connected to a wireless modem. The terminal device can communicate with the core network via a radio access network (radio access network, RAN), and exchange voice and/or data with the RAN. The terminal device may include user equipment (user equipment, UE), V2X terminal device, wireless terminal device, mobile terminal device, device-to-device communication (device-to-device, D2D) terminal device, machine-to-machine/machine-type communication ( machine-to-machine/machine-type communications, M2M/MTC) terminal equipment, internet of things (IoT) terminal equipment, subscriber unit, subscriber station, mobile station , remote station (remote station), access point (access point, AP), remote terminal (remote terminal), access terminal (access terminal), user terminal (user terminal), user agent (user agent), or user equipment (user device), wearable devices, vehicle-mounted devices, etc.

As an example but not a limitation, in this embodiment of the present application, the terminal device may also be a wearable device. Wearable devices can also be called wearable smart devices or smart wearable devices, etc., which is a general term for the application of wearable technology to intelligently design daily wear and develop wearable devices, such as glasses, gloves, watches, clothing and shoes Wait. A wearable device is a portable device that is worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not only a hardware device, but also achieve powerful functions through software support, data interaction, and cloud interaction. Generalized wearable smart devices include full-featured, large-sized, complete or partial functions without relying on smart phones, such as smart watches or smart glasses, etc., and only focus on a certain type of application functions, and need to cooperate with other devices such as smart phones Use, such as various smart bracelets, smart helmets, smart jewelry, etc. for physical sign monitoring.

And the various terminal devices described above, if located on the vehicle (for example, placed in the vehicle or installed in the vehicle), can be considered as vehicle-mounted terminal devices, such as vehicle-mounted terminal devices are also called on-board units (on-board unit, OBU ).

In the description of the embodiments of the present application, "and/or" describes the association relationship of associated objects, indicating that there may be three types of relationships, for example, A and/or B, which may mean: A exists alone, A and B exist simultaneously, and There are three cases of B. The character "/" generally indicates that the contextual objects are an "or" relationship. The at least one involved in this application refers to one or more; a plurality refers to two or more than two. In addition, it should be understood that in the description of this application, words such as "first" and "second" are only used for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or imply order.

The communication system of FIG. 1 described above can be applied to high-frequency communication. Generally, there are abundant spectrum resources at high frequencies, and the maximum available bandwidth of a single frequency band can reach 2000MHz, which is suitable for the transmission of large-traffic services. The new air interface (new radio, NR) will introduce subcarrier spacing (subcarrier spacing, SCS) with a larger frequency, such as 960kHz, to perform frequency domain dimension scheduling in the large bandwidth frequency band. Taking the bandwidth of 2000MHz as an example, 170 960kHz resource blocks (resource blocks, RBs) can be used for scheduling in the frequency domain dimension (in the frequency domain, the bandwidth of 1 RB = the bandwidth of 12 REs, the bandwidth of 1 RE =1 bandwidth of 960kHz SCS, so, for 960kHz (ie 0.96MHz), the bandwidth occupied by 170 RBs=0.96MHz*170*12=1958.4MHz).

High frequencies typically employ different configurations of analog beams to receive or transmit different types of signals. For example, if a base station wants to send a broadcast signal, it usually configures a wider analog beam to send it. If the base station wants to send data signals, it usually configures narrower analog beams for transmission. In addition, the change of the transmitting and receiving direction of the analog beam can be realized by changing the configuration of the analog beam.

Considering the implementation complexity of the terminal, the capability of the terminal is set, for example, the number of beam switching times that can be performed in each time slot. The number of times of beam switching can be understood as the number of times of changing the configuration of the analog beam. For example, there are 14 symbols in a time slot. In an extreme case, each symbol can use a different beam for communication, so the terminal supports 14 beam switching per time slot. For UEs with relatively poor capabilities, beam switching can be performed at least 4 times per slot. The beam switching mentioned above will not affect the communication of normal symbols.

In the case of a large SCS, since the duration of each time slot will become shorter, the beam is still switched in each time slot in the above manner, and the beam switching becomes more frequent. This will increase the power consumption of the terminal and increase the implementation complexity. For example, under the original 120kHz SCS, each time slot is switched 4 times. At this time, the time slot length is 0.125 milliseconds, and the average time is 0.03125 milliseconds. Under 960kHz SCS, the time slot length becomes 0.03125 milliseconds. If the ability to switch 4 times per time slot is still maintained, it will switch once every 0.0078125 milliseconds on average. Frequent beam switching is obviously unnecessary. Therefore, when the SCS is large, the number of handovers per time slot will be reduced, for example, only 2 handovers per time slot.

The terminal informs the base station of the maximum number of beam switches it supports in each time slot, and the base station will limit the scheduling based on the terminal's capabilities to avoid beam switching times exceeding the terminal's capabilities in one time slot. For example, the terminal informs the base station that each time slot can only be switched up to 4 times, then the base station can configure up to 4 different beams for communication in one time slot. The communication mentioned above includes not only uplink communication, but also downlink communication. From the up (down) line to the down (up) line, if the beams used for uplink and downlink communication are the same, it can be considered as a beam switching, or it can be considered as no beam switching, that is, the original beam is retained . If the beams used for uplink and downlink communication are different, it must be considered that a beam switching has been performed.

FIG. 2 shows a schematic diagram of a beam switching scenario. In time slot 1, there are four signals respectively CORESET1, SSB1, SSB2, and UL1. Wherein, SSB is a synchronization signal block, and different synchronization signal blocks use different beams. SSB is generally used for UE's initial access, cell search, synchronization and handover, etc. UE completes the above operations (initial access, cell search, synchronization and handover, etc.) according to different SSB signal energies obtained. Among them, SSB1 is used for signal synchronization, and SSB2 is used for signal measurement. The CORESET is a set of control channel resources, and is used to carry control signaling, for example, the control signaling used to indicate data transmission, that is, it is carried in the CORESET resource and sent through the PDCCH channel. The beams corresponding to CORESET1, the beams corresponding to SSB1 and SSB2 may be different. UL represents an uplink signal, which can carry uplink data, uplink control messages, and SRS. Among the above four signals, SSB has the highest receiving priority, because UE needs to select the most suitable cell for access and judge the communication quality of the cell where it is located. If the UE has no way to switch to the beam of the SSB of the current pre-camped cell for measurement, it will affect the measurement accuracy of the UE for the SSB of the current pre-camped cell, causing the UE to mistakenly believe that it cannot camp on the current cell.

Assuming that the maximum number of beam switching supported by the UE in one time slot is 2, the number of signals to be received is 4, and each signal corresponds to a different beam, in order to receive the 4 signals, 4 switching times are required. If the handover operation is selected according to the chronological sequence of the handover time, the UE will perform handover at the first handover time and the second handover time, and will not be executed at the third handover time and the fourth handover time. Obviously, this will cause the beam of the UE not to be switched to the beam corresponding to SSB2 for correct measurement. Since the UE cannot switch to the best beam corresponding to SSB2 to receive SSB2, the UE will not be able to perform synchronization, which will affect the subsequent reception of other signals. Under the condition that the UE beam switching capability is satisfied, in order to ensure good communication quality, the present application provides a new beam switching method, so as to improve the communication quality of the terminal equipment.

Refer to FIG. 3 for a beam switching method provided by the embodiment of the present application. This method can be executed by a terminal device. Here, only the terminal device is UE as an example for illustration. However, the actual application does not specifically limit the specific for which. The UE may perform the following:

Step 301, determine the S signals to be processed in the first time unit, at least two of the S signals have different priorities, and the signal categories of the S signals include one or more of the following: SSB, CORESET, SRS or PDSCH, S is a positive integer greater than or equal to 2.

In this application, the first time unit can be understood as one of time slot, symbol, symbol group, subframe and radio frame, and can also be understood as a time span (time span), where time span can represent an absolute time length , such as 0.5ms or 1ms. When time span=0.5ms, and when the SCS is 960kHz, the length of a tme span is equal to 64 slots; when the SCS is 480k, the length of a time span is equal to 32 slots. Then in the case of different SCS, a tme span is a time unit. The present application does not specifically limit the specific form of the first time unit. As an example, the S signals in the first time unit may be indicated by the network device, such as the S signals indicated by the first configuration information to the terminal device to receive or send in the first time unit; it may also be the terminal device according to history The communication situation is determined; it may also be indicated by a communication device performing SL communication with the UE, and the present application does not specifically limit how the S signals are determined.

In addition, the S signals may be uplink signals or downlink signals, and the present application does not specifically limit the types of the S signals. The types of the S signals mentioned in this application may include one or more of the following: SSB, CORESET, SRS or PDSCH. Wherein, all or some models of the S signals may be of the same type. The present application is only illustratively illustrated here, and the S signals may include more types of signals in practical applications, and the present application does not illustrate one by one here. In addition, the S signals have different priorities, even signals of the same type have different priorities, for example, the priority of SSB1 is higher than that of SSB2, and the priority of the signal is related to the role of the signal in the communication process. Usually, the priority level of the signal is indicated by the network device through the configuration information. For example, the priority level of S signals is indicated by the configuration information, but the UE can also flexibly adjust the priority level of the signal according to its own communication needs. For example, the network device indicates the priority of SSB1 The level is higher than SSB2, but the UE determines that the UE's communication effect is better under SSB2, for example, through data analysis of historical communication conditions, then the UE can adjust the priority of SSB2 to be higher than SSB1. In addition, the priority of the signal may also be specified by the communication protocol, and the present application does not limit the way of determining the priority of the signal.

The priority of the signal can be determined by referring to the following Table 1. The types of signals to be processed included in the first time unit include: SSB, CORESET, SRS and PDSCH, the priority of SSB is higher than that of CORESET; the priority of CORESET is high in SRS; the priority of SRS is higher than that of PDSCH.

Table 1

signal type	priority
SSB	1

CORESET	2
SRS	3
PDSCH	4
…	…

In an example, the priority of the signal can be determined by referring to the following Table 2. The priority of the SSB used for synchronization (signal synchronization with the base station) in the cell where the UE is currently camped is higher than that used for measurement (channel synchronization) in the cell where the UE is currently camped. Measuring the SSB of beam recovery), the SSB of the UE currently camping on the cell for measurement (that is, the SSB of the candidate cell or radio link monitoring (radio link monitoring, RLM)/beam failure recovery (beam failure recovery, BFR) CSI- RS) is higher than CORESET/PUCCH, CORESET is higher than PDSCH/PUSCH, and PDSCH/PUSCH is higher than CSI-RS for CQI.

Table 2

Signal	priority
The SSB used for synchronization by the UE currently camping on the cell	1
The SSB used for measurement by the UE currently camping on the cell	2
CORESET/PUCCH	3
PDSCH/PUSCH	4
CSI-RS for CQI	5
…	…

In addition, the configuration information mentioned above may be indicated by one signaling, or may be indicated by multiple signalings, specifically, it may be indicated by RRC, MAC CE, and DCI, which is not specifically limited in this application.

In step 302, within the first time unit, beam switching is performed according to a beam switching rule and signals are sent or received, and the beam switching rule is determined according to the priorities of the S signals. Usually, the number of beam switching times in the first time unit is less than or equal to the number of beam switching times supported by the terminal device in the first time unit.

A terminal device may send or receive multiple signals in a time unit, and different signals may be sent through different beams, so beam switching may occur in a time unit. The UE uses different beams to send or receive different signals. If the signals are not differentiated and the beams are directly switched to send or receive signals, the signals will not be received correctly. In addition, the number of beam switching times that a terminal device can support within one time unit is limited. This application fully considers the number of beam switching supported by the terminal device in the first time unit and the priority of each signal in the first time unit, and flexibly adjusts the beam switching rules according to the types of different signals, so that the terminal device performs beam switching in the first time unit When , the efficiency of beam switching is improved within the capability of the terminal equipment, and the communication quality is improved.

In an optional implementation manner, the first time unit may include multiple preset switching times, and the terminal device may select N target switching times from the multiple preset switching times according to the priorities of the S signals, and The terminal device performs beam switching at the target switching time, and N is less than or equal to the number of beam switching times supported by the terminal device within the first time unit.

In the embodiment of the present application, when performing beam switching, the terminal device can determine the priority of the S signals in the first time unit and which beams can be used to send or receive the S signals when the beam switching does not occur, and determine the first How many preset switching moments (that is, beam switching moments) may exist in a time unit. For example, if there are 5 signals in the first time unit, the corresponding preset switching moments may be 5 or less than 5. How much is it? Can be determined flexibly. As shown in Figure 4, it is assumed that the handover that occurs at the start boundary of time slot 1 is agreed to be the handover in time slot 1, and the handover that occurs at the end boundary of time slot 1 is agreed to be the handover in the next time slot 2 (case 1). If the handover at the end boundary of time slot 1 is regarded as the handover in time slot 1, then the handover at the time slot boundary at the beginning of time slot 1 is agreed to be the handover in the previous time slot 0 (case 2). It is also possible to define the handover occurring at the start boundary of time slot 1 and the handover occurring at the end boundary of time slot 1 as handover within time slot 1 (case 3). In the following embodiments, case 1 is taken as an example to specify the preset switching time in each first time unit. It can be understood that, in other implementation manners, the preset switching time in each first time unit may be agreed with reference to case 2.

In the case of determining the beam priority and the number of beam switching times that may be supported in the first time unit, the terminal device selects the preset switching time corresponding to the signal with a higher priority level as the target switching time, and performs beam switching. This method can guarantee the communication service quality of the terminal equipment.

In addition, when the terminal device determines the preset switching time, it can also consider whether the beams corresponding to different signals are the same or have a quasi co-location (quasi co-location, QCL) relationship; or have a spatial relation. If they are the same or have the above relationship, it is considered that the same beam is used to receive or transmit different signals, and the preset switching time may be less than the number of signals in the first time unit. For example, the signals to be received in the first time unit include CORESET1, SSB1, SSB2, and SRS1. If SSB1 and SSB2 can be received through the same beam, then the preset switching moments in the first time unit are 3 (before CORESET1 , before SSB1 and before SRS1); if the receiving beam of SSB2 has a QCL relationship with the receiving beam of SSB1, then the preset switching time in the first time unit is also 3 (before CORESET1, before SSB1 and before SRS1); if CORESET1 It can be received through the same beam as SSB1, SSB2 and SRS1 have a spatial relation, then the preset switching time in the first time unit is 2 (before CORESET1, before SSB2 and before SRS1, because SRS1 is an uplink signal and SSB2 is a downlink signal Signal, even if the beams of SSB2 and SRS have a spatial relation, there is also the case of uplink and downlink switching. Although there is no beam switching, the uplink and downlink switching may take a certain delay).

In order to select a target switching time from preset switching times, different time sequence numbers may be used for different preset switching times; the values of different time sequence numbers are associated with the switching sequence of the beam switching information. For example, there are four signals in time slot 1, respectively CORESET1, SSB1, SSB2, and SRS1. As shown in FIG. 5 , the priority of SSB1 is higher than that of SSB2, the priority of SSB2 is higher than that of CORESET1, and the priority of CORESET1 is higher than that of SRS1. Considering the priority of each signal, the preset switching time before SSB1 can be marked as switching time 1, the preset switching time before SSB2 can be marked as switching time 2, the time before CORESET1 can be marked as switching time 3, and the time before SRS1 can be marked as switching time 3. The previous instant is marked as switching instant 4. Among them, SSB1 is received through beam 2, SSB2 is received through beam 3, CORESET1 is received through beam 1, and SRS is received through beam 4. In time slot 1, if the four preset switching times are all target switching times, SSB1 can be received through beam 2 first, then SSB2 can be received through beam 3, CORESET1 can be received through beam 1, and SRS1 can be sent through beam 4 at last.

Assume that the time sequence number corresponding to the preset switching time T is T, the number of beam switching supported by the first time unit is C, and both T and C are positive integers; if T is less than or equal to C, then determine the preset switching time T as the target switching time; or, if T is greater than C, then determine that the preset switching time N is not the target switching time. If T is greater than C, the signal corresponding to the preset switching time T is sent or received according to the first beam at the preset switching time T; wherein, the first beam is a beam corresponding to a target switching time adjacent to the preset switching time T. Continuing the above example in Figure 5, if the number of beam switching supported by the terminal device in the first time unit is 2, then switching time 1 and switching time 2 are less than or equal to 2, both of which are target switching times, and SSB1 can be received through beam 2, SSB2 is received through beam 3, and switching time 3 and switching time 4 are both greater than 2, which is not the target switching time, as shown in Figure 6.

Continuing with the example in Figure 6, the switching time corresponding to CORESET1 is not the target switching time can be received through beam 0 in time slot 0, and SRS1 can be transmitted through beam 3 as shown in (a) in Figure 7; CORESET1 can also be transmitted through Beam 2 can be used to receive, and beams that have a QCL relationship with beam 0 or beam 2 can also be used to receive. Which beam to choose can be determined according to the service requirements of the UE. SRS can be sent through beam 3, as shown in (b) in Figure 7 Indicates that the present application does not make specific limitations here.

In addition, in practical applications, considering the communication status of the terminal equipment in the first time unit, some signals with low priority are not received or transmitted. As shown in Figure 8, there are CORESET1 and CSI-RS1 in time slot 1 And SRS1, according to the priority level of the signal, it can be seen that the priority level of CORESET1 and CSI-RS1 is higher than that of SRS1. Among them, CORESET1 can be received through beam 1, CSI-RS1 can be received through beam 2, and SRS1 can be transmitted through beam 3. However, the number of beam switching supported by the terminal device in time slot 1 is 2. The terminal device can choose to receive CORESET1 through beam 1, and the terminal device can send SRS1 through beam 1 as shown in Figure 8 (a); or send SRS1 through beam 3 as shown in Figure 8 (a). Shown in (b) in Figure 8. Since CSI-RS1 is used for cell measurement, its corresponding beam cannot be used to send SRS1, and the CSI-RS1 used for cell measurement has little impact on communication quality and can not be received through the beam. For different service requirements of the terminal equipment, other situations may be involved. The specific selection of which beams to receive or transmit which signals can be flexibly adjusted according to the service conditions of the terminal equipment, which is not specifically limited in this application.

In this application, the terminal device can select M beams according to the priority of S signals, and perform beam switching between M beams, and M beams are used for transmission, and/or receive S signals, M is an integer, M is smaller than S. As shown in (b) of FIG. 7 , 4 signals are included in slot 1, but the beam for receiving or transmitting the signal is switched between beam 2 and beam 3 . The M beams selected by the terminal device in the first time unit, where M is less than or equal to the number of beam switching supported by the terminal device in the first time unit, in this way the communication quality of the terminal device can be guaranteed and the user's service experience can be improved.

In addition, beam switching will occupy certain time-domain resources. As shown in Figure 9, there are 14 symbols in time slot 1, where CORESET1 occupies symbols 0-3, SSB1 occupies symbols 5-8, and SSB2 occupies symbols 8-8. 11. Wherein, the priority of SSB1 is higher than that of SSB2, and the priority of SSB2 is higher than that of CORESET1, and the target switching time may be located in the time domain resource of the low priority signal. Assuming that beam switching needs to occupy 1 symbol resource, then symbol 4 can be occupied for switching time 1, and symbol 9 can be occupied for switching time 2. The time domain resource of the low priority signal or the blank time domain resource at the target switching time can ensure the accurate reception or transmission of the high priority signal and ensure the communication quality of the terminal equipment.

Fig. 10 shows a schematic diagram of another beam switching situation, which includes 14 symbols in time slot 1, where CORESET1 occupies symbols 0-3, CSI-RS1 occupies symbols 5-8, and SRS1 occupies symbols 8-11. Among them, CORESET1 and CSI-RS1 have higher priority levels than SRS1. Assume that SRS1 uses the beam 1 corresponding to CORESET1 to transmit. Since SRS1 is an uplink signal and CORESET1 is a downlink signal, although beam 1 has not been switched, the terminal equipment will occupy the number of symbols for uplink and downlink switching. The occupied symbol resources can be Any symbol in the symbol resources 5-8 occupied by sending CSI-RS1 occupies symbol 7 as shown in (a) in Figure 10, and the symbol of SRS1 can also occupy symbol 9 as shown in Figure 10 (b). The application does not make a specific limitation here, and the number of symbol resources occupied by the uplink and downlink switching may be the same as that of the beam switching, or may be different, and the application does not specifically limit it here.

In an optional implementation manner, the configuration information may also indicate transmission beams or reception beams of the L signals, where the L signals are one or more of the S signals, and L is less than or equal to S. In this manner, the terminal device can directly perform beam switching according to the configuration information of the network device, thereby reducing the data pressure of the terminal device. For example, the first time unit includes 4 signals which are signal 1, signal 2, signal 3 and signal 4 respectively, the priority of signal 1 is higher than that of signal 2, the priority of signal 2 is higher than that of signal 3, and the priority of signal 3 is above signal 4. The network device may indicate the beams corresponding to all signals in the first time unit of the terminal device, or may only indicate the beams corresponding to some signals, and the beams corresponding to different signals may be the same or different, which is not specifically limited here.

In addition, if the configuration information is configured through RRC or MAC CE, the configuration information can also be activated or deactivated through the value of the preset indication field in DCI, because the configuration information only contains the priority of the signal, or which signal is sent by which beam Or receive, but when the terminal device executes it, it also needs to activate the signaling instruction. For example, the MAC CE configures the transmission beam of the signal in time slot 1, and the value of the DCI preset indication field can be used to activate the terminal device to send signals according to the transmission beam in the configuration information of the MAC CE. Set the value of the indication field to deactivate the terminal device to send signals according to the sending beam in the MAC CE configuration information.

The preset indication field in DCI can be indicated by one or more bits. For example, there are 4 different types of signals in slot1, and the sequence of different types of signals in the time domain is: SSB1, SSB2, CORESET1 and PDSCH1. The 2 bits in the DCI field can be used to instruct the terminal device to receive the signal in slot1, for example, when the 2 bits in the DCI field are "01", it means that the terminal device receives the SSB2 through the beam. The 4 bits in the DCI field can be used to instruct the terminal device to receive the signal in slot1. For example, when the bits in the DCI field occupy 4 bits and are "0101", the terminal device receives SSB2 and PDSCH1 through the beam.

In addition, if there are signals such as PDSCH, SS, PUSCH, and CSI-RS in the first time unit, the network device can re-indicate the time-frequency position information of the above-mentioned signals through the indication information, then the first time unit can be ignored when performing beam switching the above signal. The above signal may be beam switched in a time unit adjacent to the first time unit. For example, there are 4 different signals in slot1: SSB1, SSB2, CORESET1 and PUSCH1. The number of beam switching supported by the terminal device in slot1 is only 2. When performing beam switching, only SSB1 and SSB2 can be considered. After CORESET1 switches according to the above beam switching method, it will receive according to the corresponding beam. PUSCH1 can be used in slot2 Transmit through other beams.

FIG. 11 shows a communication device provided by the present application, including: a processing unit 111 and an input and output unit 112 . The communication device can be understood as a vehicle-mounted device, a mobile phone, an Internet of Things device, etc., and can also be understood as a module (for example, a chip) in a terminal device, which is not specifically limited in this application. It should be understood that the input and output unit may be called a transceiver unit, a communication unit, etc., and when the communication device is a terminal device, the input and output unit may be a transceiver; the processing unit may be a processor. When the communication device is a module (such as a chip) in the terminal equipment, the input and output unit can be an input and output interface, an input and output circuit or an input and output pin, etc., and can also be called an interface, a communication interface or an interface circuit etc.; the processing unit may be a processor, a processing circuit or a logic circuit and the like.

Among them, the processing unit 111 is configured to determine the S signals to be processed in the first time unit, at least two of the S signals have different priorities, and the signal categories of the S signals include one or more of the following : Synchronization signal block SSB, control resource set CORESET, channel sounding reference signal SRS or physical downlink shared channel PDSCH, S is a positive integer greater than or equal to 2; the input and output unit 112 is used to switch according to the beam within the first time unit The beam is switched according to the rule and the signal is sent or received, and the beam switching rule is determined according to the priorities of the S signals.

In the embodiment of the present application, the first time unit can be one of a time slot, a symbol, a symbol group, a subframe, and a radio frame, and can also be understood as a time span (time span), where a time span can represent an absolute time Length, such as 0.5ms or 1ms. When time span=0.5ms, and when the SCS is 960kHz, the length of a tme span is equal to 64 slots; when the SCS is 480k, the length of a time span is equal to 32 slots. Then in the case of different SCS, a tme span is a time unit. The present application does not make specific limitations here. Usually, the number of beam switching that a terminal device can support in a time unit is limited, such as 2 or 4 times, but a terminal device may send or receive multiple signals in a time unit, and different signals may pass through different beams It is sent or received, so beam switching will occur in a time unit. If the signals are not differentiated or the beams are not switched to send or receive different signals, the signal-to-noise ratio of the received signal may be reduced, the performance of the system may be reduced, the communication requirements of terminal devices cannot be met, and the user experience may be reduced. This application fully considers the number of beam switching supported by the terminal device in the first time unit and the priority of each signal in the first time unit, and flexibly adjusts the beam switching rules according to the priority of each signal, which can ensure the communication service quality of the terminal device. At the same time, it can also improve the service experience of users.

In an optional manner, the first time unit includes a plurality of preset switching times, and the communication device may select N target switching times from the multiple preset switching times according to the priorities of the S signals, and the target The terminal device performs beam switching at the switching moment, and N is less than or equal to the number of beam switching times supported by the terminal device in the first time unit.

In the embodiment of the present application, since the priority levels of the S signals in the first time unit are different, and different signals may be sent or received through different beams, the terminal device can judge how many preset signals may exist in the first time unit based on this. Switching time (that is, beam switching time), for example, there are 5 signals, and the corresponding preset switching time may be 5 or less than 5. This application does not specifically limit the preset time in the first time unit. Number of switching moments. In the case of determining the beam priority and the number of beam switching times that may be supported in the first time unit, the terminal device selects the preset switching time corresponding to the signal with a higher priority as the target switching time, and performs beam switching , in this manner, the communication service quality of the terminal device can be guaranteed.

In an optional manner, different preset switching times are indicated by different time sequence numbers; the values of the time sequence numbers are associated with the switching sequence of the beam switching information.

In an optional manner, the time sequence number corresponding to the preset switching time T is T, the number of beam switching supported by the first time unit is C, and both T and C are positive integers; if T is less than or equal to C, determine The preset switching time T is the target switching time; or, if T is greater than C, it is determined that the preset switching time N is not the target switching time.

In an optional manner, if T is greater than C, the signal corresponding to the preset switching time T is sent or received according to the first beam at the preset switching time T; The beam corresponding to the switching time of the adjacent target.

In the embodiment of this application, it is assumed that the first time unit determines three signals, namely signal 1, signal 2, and signal 3. The priority of signal 3 is higher than that of signal 2, and the priority of signal 2 is higher than that of signal 1. The first time unit exists There are 3 preset switching moments, which appear before sending or receiving signal 1, signal 2 and signal 3 respectively. According to the priority of the signal in the first time unit, the preset switching time before sending or receiving signal 3 can be set as preset switching time 1, and the preset switching time before sending or receiving signal 2 can be set as preset switching time At time 2, the preset switching time before sending or receiving signal 1 is set as preset switching time 3 . In addition, it is assumed that the number of beam switching supported by the first time unit is 2 times, where 1 is less than 2, then the preset beam 3 can be sent at the preset switching time 1, or the signal 3 can be received; 2 is equal to 2, then the preset switching can be performed At time 2, send according to preset beam 2, or receive signal 2; if 3 is greater than 2, then beam switching will not be performed at preset switching time 3, and can be sent according to preset beam 3 or preset beam 2, or receive signal 1.

In an optional manner, the input and output unit is specifically configured to: select M beams according to the priorities of the S signals, perform beam switching among the M beams, and use the M beams for transmission, and/or, receive S signals, M is an integer, and M is smaller than S.

In this embodiment of the present application, the terminal device selects M beams in the first time unit, where M is less than or equal to the number of beam switching times supported by the terminal device in the first time unit.

In an optional manner, the signal categories of the S signals include: SSB, CORESET, SRS and PDSCH; the priority of SSB is higher than that of CORESET; the priority of CORESET is higher than that of SRS; the priority of SRS is higher than that of PDSCH. The priorities of different types of signals may be determined through configuration information of the network device, or determined independently by the terminal device, which is not specifically limited in this application.

In an optional manner, the priorities of the S signals are configured through configuration information.

In an optional manner, the configuration information is also used to configure a sending beam or a receiving beam for L signals, where the L signals are one or more of the S signals, and L is less than or equal to S. By configuring the receiving and sending beams of the signal through the configuration information, the terminal device does not need to determine how to switch the beam in the first time unit according to the priority of the signal. In this way, the data processing pressure of the terminal device can be reduced and the data processing efficiency can be improved.

In an optional manner, the configuration information is carried in the following signaling: RRC, or MAC CE, or DCI.

In an optional manner, the configuration information is activated or deactivated through a value of a preset indication field in the DCI.

In an optional manner, the preset indication field is 1 bit or multiple bits.

In an optional manner, the types of the S signals may include one or more of the following: SSB, CORESET, CSI-RS, SRS, PUCCH, PUSCH, and PDSCH. The present application is only illustratively illustrated here, and more types of signals may be included in actual applications, and the present application does not illustrate one by one here. Usually SSB has the highest priority level, followed by CORESET or CSI-RS, followed by PUCCH, SRS, PUSCH, and finally PDSCH. Whether the RS is periodic or aperiodic, and whether it is semi-persistent or not, the priority of the signal may be adjusted, and the priority of the signal corresponding to the information carried by the PUSCH is also different. This application does not specifically limit it here. How to define the priority level of the signal.

In addition, as shown in FIG. 12 , it is a communication device 1200 provided in this application. Exemplarily, the communication device 1200 may be a chip or a chip system. Optionally, in the embodiment of the present application, the system-on-a-chip may be composed of chips, or may include chips and other discrete devices.

The communication device 1200 may include at least one processor 1210, and the communication device 1200 may further include at least one memory 1220 for storing computer programs, program instructions and/or data. The memory 1220 is coupled to the processor 1210 . The coupling in the embodiments of the present application is an indirect coupling or a communication connection between devices, units or modules, which may be in electrical, mechanical or other forms, and is used for information exchange between devices, units or modules. The processor 1210 may operate in cooperation with the memory 1220 . Processor 1210 may execute computer programs stored in memory 1220 . Optionally, the at least one memory 1220 may also be integrated with the processor 1210 .

Optionally, in practical applications, the communication device 1200 may or may not include the transceiver 1230 , which is indicated by a dashed box in the figure, and the communication device 1200 may perform information exchange with other devices through the transceiver 1230 . The transceiver 1230 may be a circuit, a bus, a transceiver or any other device that can be used for communication.

In a possible implementation manner, the communication apparatus 1200 may be applied to the aforementioned terminal device, or may be the aforementioned first communication apparatus, or may be the aforementioned second communication apparatus. The memory 1220 stores necessary computer programs, program instructions and/or data for implementing the functions of the relay device in any of the above-mentioned embodiments. The processor 1210 may execute the computer program stored in the memory 1220 to complete the method in any of the foregoing embodiments.

In this embodiment of the present application, a specific connection medium among the transceiver 1230, the processor 1210, and the memory 1220 is not limited. In the embodiment of the present application, in FIG. 12, the memory 1220, the processor 1210, and the transceiver 1230 are connected through a bus. The bus is represented by a thick line in FIG. 12, and the connection between other components is only for schematic illustration. It is not limited. The bus can be divided into address bus, data bus, control bus and so on. For ease of representation, only one thick line is used in FIG. 12 , but it does not mean that there is only one bus or one type of bus. In this embodiment of the application, the processor may be a general-purpose processor, a digital signal processor, an application-specific integrated circuit, a field programmable gate array or other programmable logic device, a discrete gate or transistor logic device, or a discrete hardware component, and may implement or Execute the methods, steps and logic block diagrams disclosed in the embodiments of the present application. A general purpose processor may be a microprocessor or any conventional processor or the like. The steps of the methods disclosed in connection with the embodiments of the present application may be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules in the processor.

In the embodiment of the present application, the memory may be a non-volatile memory, such as a hard disk (hard disk drive, HDD) or a solid-state drive (solid-state drive, SSD), etc., and may also be a volatile memory (volatile memory), such as Random-access memory (RAM). The memory may also be, but is not limited to, any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. The memory in the embodiments of the present application may also be a circuit or any other device capable of implementing a storage function, for storing computer programs, program instructions and/or data.

Based on the above embodiments, referring to FIG. 13, the embodiment of the present application also provides another communication device 1300, including: an interface circuit 1310 and a logic circuit 1320; the interface circuit 1310 can be understood as an input and output interface, and can be used to implement The schematic input and output unit or the same operation steps as the transceiver shown in FIG. 12 will not be repeated in this application. The logic circuit 1320 can be used to run the code instructions to execute the method in any of the above embodiments, and can be understood as the processing unit in FIG. 11 or the processor in FIG. 12, which can realize the same function as the processing unit or processor, This application will not go into details here.

Based on the above embodiments, an embodiment of the present application further provides a readable storage medium, the readable storage medium stores instructions, and when the instructions are executed, the beam switching method in any of the above embodiments is implemented. The readable storage medium may include various mediums capable of storing program codes such as U disk, mobile hard disk, read-only memory, random access memory, magnetic disk or optical disk.

Those skilled in the art should understand that the embodiments of the present application may be provided as methods, systems, or computer program products. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to the present application. It should be understood that each procedure and/or block in the flowchart and/or block diagram, and a combination of procedures and/or blocks in the flowchart and/or block diagram can be realized by computer program instructions. These computer program instructions may be provided to a general purpose computer, special purpose computer, embedded processor, or processor of other programmable data processing apparatus to produce a machine such that the instructions executed by the processor of the computer or other programmable data processing apparatus produce a An apparatus for realizing the functions specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing device to operate in a specific manner, such that the instructions stored in the computer-readable memory produce an article of manufacture comprising the instruction device, the instructions The device realizes the function specified in one or more procedures of the flowchart and/or one or more blocks of the block diagram.

These computer program instructions can also be loaded onto a computer or other programmable data processing device, causing a series of operational steps to be performed on the computer or other programmable device to produce a computer-implemented process, thereby The instructions provide steps for implementing the functions specified in the flow chart or blocks of the flowchart and/or the block or blocks of the block diagrams.

Claims (24)

1. A beam switching method applied to a terminal device, characterized in that it includes:

   Determine the S signals to be processed in the first time unit, at least two of the S signals have different priorities, and the signal categories of the S signals include one or more of the following: synchronization signal block SSB, Control resource set CORESET, channel sounding reference signal SRS or physical downlink shared channel PDSCH, the S is a positive integer greater than or equal to 2;

   In the first time unit, beam switching is performed according to a beam switching rule and signals are sent or received, and the beam switching rule is determined according to priorities of the S signals.
2. The method according to claim 1, wherein the first time unit includes a plurality of preset switching moments, and the beam switching rules include:

   Select N target switching times from the plurality of preset switching times according to the priorities of the S signals, and perform beam switching at the target switching times, and the N is less than or equal to the terminal device at the The times of beam switching supported in the first time unit, the N is less than or equal to the S, and the N is a positive integer.
3. The method according to claim 1, wherein the priorities of the S signals are configured through configuration information.
4. The method according to any one of claims 1-3, wherein the signal categories of the S signals include: the SSB, the CORESET, the SRS, and the PDSCH;

   The priority of the SSB is higher than that of the CORESET; the priority of the CORESET is higher than that of the SRS; the priority of the SRS is higher than that of the PDSCH.
5. The method according to claim 3 or 4, wherein the configuration information is also used to configure the transmitting beam or receiving beam of L signals, and the L signals are one or more of the S signals , the L is less than or equal to the S.
6. The method according to claim 3 or 5, wherein the configuration information is carried in the following signaling: Radio Resource Control (RRC), or Media Access Control (MAC CE), or downlink control information (DCI).
7. The method according to claim 6, wherein the configuration information is activated or deactivated by a value of a preset indication field in the DCI.
8. The method according to claim 7, wherein the preset indication field is 1 bit or multiple bits.
9. The method according to any one of claims 1-8, wherein the beam switching according to the beam switching rule comprises:

   Select M beams according to the priorities of the S signals, perform the beam switching among the M beams, the M beams are used for sending, and/or receive the S signals, the M is a positive integer, and said M is smaller than said S.
10. The method according to claim 2, wherein the target switching time is located in a time domain resource of a low priority signal.
11. A communication device, characterized by comprising:

    A processing unit, configured to determine S signals to be processed in the first time unit, at least two of the S signals have different priorities, and the signal categories of the S signals include one or more of the following: Synchronization signal block SSB, control resource set CORESET, channel sounding reference signal SRS or physical downlink shared channel PDSCH, the S is a positive integer greater than or equal to 2;

    The input and output unit is configured to perform beam switching and send or receive signals according to a beam switching rule within the first time unit, and the beam switching rule is determined according to the priorities of the S signals.
12. The device according to claim 11, wherein the first time unit includes a plurality of preset switching moments, and the beam switching rules include:

    Select N target switching times from the plurality of preset switching times according to the priorities of the S signals, and perform beam switching at the target switching times, and the N is less than or equal to the terminal device at the The times of beam switching supported in the first time unit, the N is less than or equal to the S, and the N is a positive integer.
13. The device according to claim 11, wherein the priorities of the S signals are configured through configuration information.
14. The device according to any one of claims 11-13, wherein the signal categories of the S signals include: the SSB, the CORESET, the SRS, and the PDSCH;

    The priority of the SSB is higher than that of the CORESET; the priority of the CORESET is higher than that of the SRS; the priority of the SRS is higher than that of the PDSCH.
15. The device according to claim 13 or 14, wherein the configuration information is also used to configure the transmitting beam or receiving beam of L signals, and the L signals are one or more of the S signals , the L is less than or equal to the S.
16. The device according to claim 13 or 15, wherein the configuration information is carried in the following signaling: Radio Resource Control (RRC), or Media Access Control (MAC CE), or downlink control information (DCI).
17. The device according to claim 16, wherein the configuration information is activated or deactivated according to a value of a preset indication field in the DCI.
18. The device according to claim 17, wherein the preset indication field is 1 bit or multiple bits.
19. The device according to any one of claims 11-18, wherein the input and output unit is used for:

    Select M beams according to the priorities of the S signals, perform the beam switching among the M beams, the M beams are used for sending, and/or receive the S signals, the M is a positive integer, and said M is smaller than said S.
20. The device according to claim 12, wherein the target switching time is located in a time-domain resource of a low-priority signal.
21. A communication device, characterized by comprising: at least one processor;

    The processor is configured to execute a computer program, so that the communication device executes the method according to any one of claims 1-10.
22. A computer-readable storage medium, wherein the computer-readable storage medium stores instructions, and when the instructions are executed, the computer executes the method according to any one of claims 1-10.
23. A computer program product comprising computer programs or instructions, characterized in that, when running on a computer, it causes the computer to perform the method described in any one of claims 1-10 above.
24. A communication device, characterized by comprising: at least one processor and a memory, wherein the memory is used to store a computer program, and the processor is used to execute the computer program, so that the communication device performs the The method described in any one of 1-10.

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