Beam management methods, terminals and network-side equipment

Abstract

This application discloses a beam management method, a terminal, and a network-side device, belonging to the field of communications. The beam management method of this application includes: the terminal performing beam management based on a first reference signal triggered on demand; wherein, the beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

Description

Technical Field

[0001] This application belongs to the field of communication technology, specifically relating to a beam management method, a terminal, and network-side equipment. Background Technology

[0002] In 6-Generation (6G) mobile communication technology, in order to achieve network energy saving, reference signals such as Synchronization Signal / Physical Broadcast Channel Block (SS / PBCH Block, SSB) or Channel State Information Reference Signal (CSI-RS) are periodic reference signals.

[0003] When the terminal performs beam management based on SSB or CSI-RS, and the period of SSB or CSI-RS is too long, the performance of beam management may be degraded. For example, an excessively long period of SSB or CSI-RS will significantly increase the latency of beam failure detection and beam failure recovery. Summary of the Invention

[0004] This application provides a beam management method, a terminal, and a network-side device that can ensure beam management performance while saving network energy.

[0005] Firstly, a beam management method is provided, executed by a terminal, the method comprising:

[0006] The terminal performs beam management based on a first reference signal triggered on demand.

[0007] The beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

[0008] Secondly, a beam management method is provided, executed by a network-side device, the method comprising:

[0009] The network-side device sends a first reference signal that is triggered on demand.

[0010] The first reference signal is used by the terminal for beam management, and the beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

[0011] Thirdly, a beam management device is provided, comprising:

[0012] The processing module is used for beam management based on the first reference signal triggered on demand;

[0013] The beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

[0014] Fourthly, a beam management device is provided, comprising:

[0015] The first transmitting module is used to transmit the first reference signal that is triggered on demand.

[0016] The first reference signal is used by the terminal for beam management, and the beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

[0017] Fifthly, a beam management device is provided, the device being configured to perform the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0018] In a sixth aspect, a terminal is provided, the terminal including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the first aspect.

[0019] In a seventh aspect, a terminal is provided, including a processor and a communication interface, wherein the processor is used for beam management based on a first reference signal triggered on demand;

[0020] The beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

[0021] Eighthly, a network-side device is provided, the network-side device including a processor and a memory, the memory storing a program or instructions executable on the processor, the program or instructions, when executed by the processor, implementing the steps of the method as described in the second aspect.

[0022] In a ninth aspect, a network-side device is provided, including a processor and a communication interface, wherein the communication interface is used to send a first reference signal that is triggered on demand;

[0023] The first reference signal is used by the terminal for beam management, and the beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

[0024] In a tenth aspect, a readable storage medium is provided, on which a program or instructions are stored, which, when executed by a processor, implement the steps of the method described in the first aspect, or implement the steps of the method described in the second aspect.

[0025] Eleventhly, a wireless communication system is provided, comprising: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the method as described in the first aspect, and the network-side device can be used to perform the steps of the method as described in the second aspect.

[0026] In a twelfth aspect, a chip is provided, the chip including a processor and a communication interface coupled to the processor, the processor being configured to run a program or instructions to implement the steps of the method described in the first aspect, or to implement the steps of the method described in the second aspect.

[0027] In a thirteenth aspect, a computer program / program product is provided, which is stored in a storage medium and executed by at least one processor to implement the steps of the beam management method as described in the first or second aspect.

[0028] In this embodiment, the terminal performs beam management based on a first reference signal triggered on demand, which can ensure the performance of beam management while saving network energy. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of a communication system architecture provided in an embodiment of this application.

[0030] Figure 2 This is an example of the structure of the SSB provided in the embodiments of this application.

[0031] Figure 3 This is an example of the SSB cycle provided in the embodiments of this application.

[0032] Figures 4 to 6 This is a schematic flowchart of the beam management method provided in the embodiments of this application.

[0033] Figure 7 This is a schematic block diagram of a beam management device provided in an embodiment of this application.

[0034] Figure 8 This is a schematic block diagram of another beam management device provided in the embodiments of this application.

[0035] Figure 9 This is a schematic block diagram of a communication device provided in an embodiment of this application.

[0036] Figure 10 This is a schematic diagram of the hardware structure of a terminal provided in an embodiment of this application.

[0037] Figure 11 This is a schematic block diagram of a network-side device provided in an embodiment of this application. Detailed Implementation

[0038] The technical solutions of the embodiments of this application will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application are within the scope of protection of this application.

[0039] The terms "first," "second," etc., used in this application are used to distinguish similar objects and not to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that embodiments of this application can be implemented in orders other than those illustrated or described herein, and the objects distinguished by "first" and "second" are generally of the same class, not limited in number; for example, the first object can be one or more. Furthermore, "or" in this application indicates at least one of the connected objects. For example, the scope of protection for "A or B" covers at least three scenarios: Scenario 1: including A but not B; Scenario 2: including B but not A; Scenario 3: including both A and B. In addition, the terms "A and / or B," "at least one of A and B," and "at least one of A or B" also cover at least the above three scenarios. The character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0040] The term "instruction" in this application can be either a direct instruction (or explicit instruction) or an indirect instruction (or implicit instruction). A direct instruction can be understood as the sender explicitly informing the receiver of specific information, the required operation, or the requested result in the instruction sent. An indirect instruction can be understood as the receiver determining the corresponding information based on the instruction sent by the sender, or making a judgment and determining the required operation or requested result based on the judgment result.

[0041] It is worth noting that the technologies described in this application are not limited to Long Term Evolution (LTE) / LTE-Advanced (LTE-A) systems, but can also be used in other wireless communication systems, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single-carrier Frequency-Division Multiple Access (SC-FDMA), or other systems. The terms "system" and "network" in this application are often used interchangeably, and the described technologies can be used with the systems and radio technologies mentioned above, as well as with other systems and radio technologies. The following description describes New Radio (NR) systems for illustrative purposes, and the term NR is used in most of the following description; however, these technologies can also be applied to systems other than NR systems, such as 6th generation (6G) radio systems. th Generation 6G communication system.

[0042] Figure 1This diagram illustrates a block diagram of a wireless communication system applicable to embodiments of this application. The wireless communication system includes a terminal 11 and a network-side device 12. The terminal 11 can also be referred to as User Equipment (UE), and can be a mobile phone, tablet computer, laptop computer, notebook computer, personal digital assistant (PDA), handheld computer, netbook, ultra-mobile personal computer (UMPC), mobile internet device (MID), augmented reality (AR), virtual reality (VR) device, robot, wearable device, flight vehicle, vehicle user equipment (VUE), shipboard equipment, pedestrian user equipment (PUE), smart home devices (home appliances with wireless communication capabilities, such as refrigerators, televisions, washing machines, or furniture), game consoles, personal computers (PCs), ATMs, or self-service machines, etc. Wearable devices include: smartwatches, smart bracelets, smart earphones, smart glasses, smart jewelry (smart bracelets, smart chains, smart rings, smart necklaces, smart anklets, smart anklets, etc.), smart wristbands, smart clothing, etc. Among these, in-vehicle devices can also be referred to as in-vehicle terminals, in-vehicle controllers, in-vehicle modules, in-vehicle components, in-vehicle chips, or in-vehicle units, etc. It should be noted that the specific type of terminal 11 is not limited in this application embodiment. Network-side equipment 12 may include access network equipment or core network equipment, wherein access network equipment may also be referred to as Radio Access Network (RAN) equipment, radio access network function, or radio access network unit. Access network equipment may include base stations, Wireless Local Area Network (WLAN) access points (APs), or Wireless Fidelity (WiFi) nodes, etc.Among them, base stations can be referred to as Node B (NB), Evolved Node B (eNB), Next Generation Node B (gNB), New Radio Node B (NR Node B), Access Point, Relay Base Station (RBS), Serving Base Station (SBS), Base Transceiver Station (BTS), Radio Base Station, Radio Transceiver, Basic Service Set (BSS), Extended Service Set (ESS), Home Node B (HNB), Home Evolved Node B, Transmit / Receive Point (TRP), Non-Terrestrial Network (NTN) equipment (such as satellite or high altitude platform stations). The term "base station" can be any suitable term in the field, such as "station" or any other appropriate term in the relevant field, as long as the same technical effect is achieved. The term "base station" is not limited to specific technical terms. It should be noted that the embodiments of this application only use the base station in the NR system as an example for introduction, and do not limit the specific type of base station.

[0043] To facilitate a better understanding of the embodiments of this application, the related technologies are described.

[0044] (1) 5-Generation (5G) SSB.

[0045] In 5G, the structure of SSB is as follows: Figure 2 As shown. The terminal first detects the Primary Synchronization Signal (PSS) to obtain a portion of the Physical Cell Identifier (ID), namely N. (2)_ID ; Obtain Orthogonal Frequency Division Multiplexing (OFDM) symbol timing and frequency synchronization; then detect the Secondary Synchronization Signal (SSS) to obtain the other part of the physical cell ID, namely N. (1)_IDThis yields the complete Physical Cell ID, also known as the Physical Cell Identity (PCI). For example, PCI = N 小区_ID =3N (1)_ID +N (2)_ID Then the terminal detects the Physical Broadcast Channel (PBCH) and the Demodulation Reference Signal (DMRS) of the PBCH to obtain the System Frame number and SSB index, and further obtains the subframe timing.

[0046] In NR, the SSB period is configured in System Information Block (SIB) 1, and can be 5ms, 10ms, 20ms, 40ms, 80ms, or 160ms. During initial access, the UE has not yet received SIB1, so it will search for the SSB according to the default 20ms period. The SSB does not appear only once at regular intervals, but rather several times within a half-frame at regular intervals. This is designed for beam scanning. Figure 3 As shown, each of these SSBs corresponds to a beam scanning direction, and eventually there will be an SSB in each direction. These SSBs are called an SSB set, and all SSBs in an SSB set must be in the same half frame.

[0047] (2) SSB transmission method in multi-carrier scenario.

[0048] Multicarrier operation is a typical operation in 5G NR networks to enhance network capacity. For a primary cell (PCell) or a primary secondary cell (PSCell), the base station must send periodic SSBs, and the SSB period must be less than or equal to 20ms for the initial search terminal to be successfully searched.

[0049] For intra-band Scells, the base station can send an SSB (Service Subscriber Block), in which case the SSB-related parameters are configured when adding the Scell; alternatively, it can choose not to send an SSB, in which case the SSB-related parameters are not configured when adding the Scell, and the terminal obtains timing through the SSB on the Pcell. For inter-band Scells, the base station must send an SSB, and the SSB-related parameters must be configured when adding the Scell.

[0050] (3) Network energy saving.

[0051] Network energy efficiency is listed as one of the 13 performance requirements of International Mobile Telecommunications (IMT)-2020. The majority of power consumption in NR networks comes from base stations, with 90% of the power consumption of NR base stations originating from active antenna units (AAUs). Due to higher frequency bands, wider bandwidth, and increased transmit / receive (TRX) frequencies, the power consumption of a single NR base station is currently 3-4 times higher than that of LTE. Furthermore, in terms of operating expenses (OPEX), base station electricity costs account for nearly 20% of the total network operating costs. For some operators, electricity costs represent more than half of their total profits. Therefore, NR network energy efficiency is becoming increasingly critical for the significant success of 5G. Depending on the actual load conditions, base stations can implement various energy-saving measures, such as shutting down the base station, disabling carriers / cells, disabling channels, disabling SSBs / beams, disabling antennas / panels, cell discontinuous transmission (DTX) and / or discontinuous reception (DRX), CSI adaptation, etc.

[0052] In 6G, to achieve network energy saving, SSB or CSI-RS is typically configured as a periodic reference signal. Terminals perform beam management based on SSB or CSI-RS. However, an excessively long period of SSB or CSI-RS can potentially degrade beam management performance. For example, an excessively long period of SSB or CSI-RS increases the latency of beam failure detection. This application provides a method for beam management based on an on-demand triggered first reference signal. This method enables beam management while maintaining network energy saving, even when the second reference signal transmitted by the network-side device has a long period or the network-side device does not generate a second reference signal. The second reference signal includes at least one of the following: a non-on-demand triggered reference signal, a periodic reference signal, a semi-static reference signal, or a non-periodic reference signal. For example, the second reference signal includes at least one of the following: SSB or CSI-RS. For example, the second reference signal can be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be replaced by other reference signals that can achieve the same or some of the functions.

[0053] The beam management method provided in this application will be described in detail below with reference to the accompanying drawings and through some embodiments and application scenarios.

[0054] It should be noted that the time-domain unit involved in this application may be one or more symbols, time slots, radio subframes, radio frames, ms, s, etc.

[0055] Furthermore, the thresholds and limits involved in this application may be determined by the terminal and notified to the network, or may be indicated by the network to the terminal, or may be agreed upon through a protocol. This application does not make any specific limitations on these.

[0056] The quasi-co-located (QCL) involved in this application includes at least one of QCL A, QCL B, QCL C, and QCL D. For example, the quasi-co-located Physical Downlink Control Channel (PDCCH) and SSB can also be understood as the PDCCH's quasi-co-located resource (source) including the SSB. Alternatively, when the SSB can be used as a QCL resource for the PDCCH, the terminal is allowed to perform Beam Failure Detection (BFD) based on the SSB.

[0057] Figure 4 This is a schematic flowchart of a beam management method 200 according to an embodiment of this application.

[0058] like Figure 4 As shown, the beam management method 200 may include at least some of the following:

[0059] S201, the terminal performs beam management based on the first reference signal triggered on demand.

[0060] The beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

[0061] For example, the first reference signal includes at least one of the following: an SSB or a CSI-RS. For instance, the first reference signal may be an on-demand triggered SSB, also known as an on-demand (OD) SSB. As another example, the first reference signal may be an on-demand triggered CSI-RS, also known as an on-demand OD CSI-RS. Furthermore, an on-demand triggered SSB or CSI-RS may also be an on-demand triggered SSB or CSI-RS that changes the transmission period, for example, from a 160ms transmission period to a 20ms transmission period.

[0062] In this embodiment, the network-side device can maintain a reference signal with a longer period or not send a reference signal when there is no demand or trigger, thereby achieving network energy saving. When the terminal needs to perform beam management, the terminal performs beam management based on the first reference signal triggered on demand, thereby ensuring the performance of beam management while saving network energy.

[0063] In some embodiments, S201 includes:

[0064] If the first condition is met, the terminal performs beam recovery based on the first reference signal;

[0065] The first condition includes at least one of the following:

[0066] The terminal determined that the beam failed;

[0067] The count of beam failure instances (BFI) is greater than or equal to the first threshold.

[0068] The terminal requested the first reference signal;

[0069] The cell that experienced beam failure is transmitting the first reference signal;

[0070] The reference signal set used by the terminal for beam recovery does not include the second reference signal;

[0071] The reference signal set used by the terminal for beam recovery includes a second reference signal, and the period of the second reference signal is greater than or equal to a period threshold.

[0072] The terminal was not configured with a reference signal set for beam recovery;

[0073] The reference signal set used by the terminal for beam recovery includes the first reference signal;

[0074] The terminal performed beam failure detection based on a reference signal triggered on demand.

[0075] For example, when the first condition is met, the terminal performs beam recovery based on the first reference signal. That is, when the terminal detects that the first condition is met, the terminal performs beam recovery based on the first reference signal.

[0076] For example, the first condition includes at least one of the following:

[0077] 1. The terminal determines that a beam failure has occurred. For example, the terminal detects that a beam failure has occurred.

[0078] 2. The BFI count is greater than or equal to the first threshold. For example, the BFI count can be the count of the BFI counter.

[0079] 3. The terminal has requested the first reference signal. For example, the terminal has sent a request to transmit the first reference signal.

[0080] 4. The cell experiencing beam failure is transmitting the first reference signal. For example, the cell experiencing beam failure is transmitting the first reference signal, which is a network-triggered or terminal-triggered reference signal.

[0081] 5. The reference signal set used by the terminal for beam recovery does not include a second reference signal. The second reference signal includes at least one of the following: a non-on-demand triggered reference signal, a periodic reference signal, a semi-static reference signal, or a non-periodic reference signal. For example, the second reference signal includes at least one of the following: SSB or CSI-RS. For example, the second reference signal can be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or partial functions.

[0082] 6. The reference signal set used by the terminal for beam recovery includes a second reference signal, and the period of the second reference signal is greater than or equal to a period threshold. The second reference signal includes at least one of the following: a non-on-demand triggered reference signal, a periodic reference signal, a semi-static reference signal, or a non-periodic reference signal. For example, the second reference signal includes at least one of the following: SSB or CSI-RS. For example, the second reference signal can be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or partial functions.

[0083] 7. The terminal is not configured with a reference signal set for beam recovery.

[0084] 8. The reference signal set for beam recovery of the terminal includes the first reference signal. For example, the reference signal set for beam recovery configured in the terminal includes the first reference signal, or the first reference signal is configured as a reference signal for beam recovery.

[0085] 9. The terminal performs beam failure detection based on a reference signal triggered on demand.

[0086] It should be noted that the first condition can be any of the above nine sub-conditions or any combination thereof, and may even include other similar conditions. This application does not specifically limit this.

[0087] In this embodiment, when the first condition is met, the terminal performs beam recovery based on the first reference signal, enabling the terminal to perform beam recovery based on the first reference signal in appropriate scenarios. This not only ensures the performance of beam recovery while saving network energy, but also reduces the latency of beam recovery.

[0088] Furthermore, if the first condition includes: the BFI count is greater than or equal to a first threshold, the terminal can trigger beam recovery without waiting for beam failure, thus reducing beam recovery latency. If the first condition includes: the reference signal set used by the terminal for beam recovery does not include a second reference signal, the terminal cannot perform beam recovery based on the second reference signal, or it indicates that the second reference signal has not been transmitted. This will cause beam recovery failure, thereby affecting beam recovery performance. In this embodiment, beam recovery is performed based on the first reference signal, which can guarantee beam recovery performance. If the first condition includes: the reference signal set used by the terminal for beam recovery includes a second reference signal, and the period of the second reference signal is greater than or equal to a period threshold, it indicates that the transmission period of the second reference signal is too large. This will cause the terminal's beam recovery time to be very long, thus affecting beam recovery performance. In this embodiment, beam recovery is performed based on the first reference signal, which can perform beam recovery faster, thereby guaranteeing beam recovery performance. If the first condition includes: the terminal is not configured with a reference signal set for beam recovery, it means that there may be no reference signal that the terminal can receive for beam recovery. This will cause the terminal's beam recovery to fail, thus affecting the performance of beam recovery. In this embodiment, beam recovery is performed based on the first reference signal, which can guarantee the performance of beam recovery. If the first condition includes: the reference signal set used by the terminal for beam recovery includes the first reference signal, then the network side configures the terminal to perform beam recovery based on the first reference signal. If the first condition includes: the terminal performs beam failure detection based on the on-demand triggered reference signal, when the terminal determines that a beam failure has occurred, it can continue to perform beam recovery based on this reference signal.

[0089] It should be noted that the reference signal set used for beam recovery can also be referred to as the candidate beam reference signal set.

[0090] It should be noted that the beam recovery mentioned above can also be expressed as beam failure recovery, or candidate beam identification.

[0091] In some embodiments, S201 includes:

[0092] If the second condition is met, the terminal performs beam failure detection based on the first reference signal;

[0093] The second condition includes at least one of the following:

[0094] The cell associated with the first reference signal is not a secondary cell (SCell);

[0095] The cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell;

[0096] The Physical Downlink Control Channel (PDCCH) and at least one of the following quasi-co-located: the first reference signal and the second reference signal;

[0097] The first reference signal is a network-triggered reference signal;

[0098] The first reference signal is the reference signal that is being transmitted;

[0099] The bandwidth of the first reference signal is the same as the bandwidth of the physical downlink control channel (PDCCH).

[0100] The bandwidth of the first reference signal is the same as the bandwidth of the channel state information reference signal CSI-RS;

[0101] The cell associated with the first reference signal is not configured with the transmission configuration indication TCI status or quasi-co-address information for the Physical Downlink Control Channel (PDCCH);

[0102] The reference signal set used by the terminal for beam failure detection includes the first reference signal.

[0103] For example, when the second condition is met, the terminal performs beam failure detection based on the first reference signal.

[0104] For example, the second condition includes at least one of the following:

[0105] 1. The cell associated with the first reference signal is not a secondary cell (SCell). Since network-side equipment indicates the PDCCH beam before scheduling data on an SCell, and currently the QCL resource of the PDCCH is not set to SSB, terminals typically do not perform beam failure detection for that SCell based on the SSB associated with it. Therefore, when the cell associated with the first reference signal is not a secondary cell, the first reference signal can be used for beam failure detection.

[0106] 2. The cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell. Since network-side equipment indicates the PDCCH beam before scheduling data on the SCell, and currently the QCL resource of the PDCCH is not set as an SSB, terminals typically do not perform beam failure detection for this SCell based on the SSB associated with that SCell. Therefore, when the cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell, it indicates that the first reference signal can be used for beam failure detection.

[0107] 3. The PDCCH is quasi-co-located with at least one of the following: the first reference signal and the second reference signal. When the PDCCH and the first reference signal are quasi-co-located, the terminal can perform beam failure detection based on the first reference signal. In other words, when the PDCCH and the first reference signal are quasi-co-located, the terminal's measurement result of the first reference signal can reflect the beam status of the PDCCH. Similarly, when the PDCCH and the second reference signal are quasi-co-located, the terminal is allowed to perform beam failure detection based on the second reference signal. In other words, when the PDCCH and the second reference signal are quasi-co-located, the terminal's measurement result of the second reference signal can reflect the beam status of the PDCCH. The second reference signal includes at least one of the following: a non-on-demand triggering reference signal, a periodic reference signal, a semi-static reference signal, and a non-periodic reference signal. For example, the second reference signal includes at least one of the following: an SSB or a CSI-RS. For example, the second reference signal can be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be replaced by other reference signals that can achieve the same or some of the functions.

[0108] 4. The first reference signal is a network-triggered reference signal. If the network side triggers the transmission of the first reference signal, the terminal can perform beam failure detection based on the first reference signal.

[0109] 5. The first reference signal is a reference signal that is currently being transmitted. If the first reference signal is being transmitted, the terminal can perform beam failure detection based on the first reference signal. It is understood that if the network side triggers the transmission of the first reference signal for other reasons, such as triggering by other terminals, or SCell measurement or SCell activation by other terminals, the terminal can use this transmitting first reference signal to perform beam failure detection.

[0110] 6. The bandwidth of the first reference signal is the same as the bandwidth of the PDCCH. This can be understood as: the bandwidth of the first reference signal can be extended in the frequency domain, or the measurement results of the first reference signal can reflect the beam pattern of the PDCCH.

[0111] 7. The bandwidth of the first reference signal is the same as the bandwidth of the Channel State Information Reference Signal (CSI-RS). This can be understood as: the bandwidth of the first reference signal can be extended in the frequency domain, or the measurement results of the first reference signal can reflect the beam situation in the same way as CSI-RS.

[0112] 8. The cell associated with the first reference signal does not have a PDCCH transmission configuration indication (TCI) status or quasi-co-location information configured. For example, the cell associated with the first reference signal does not have a PDCCH TCI status or QCL resources configured. In this case, there is no restriction that the PDCCH QCL resources are CSI-RS, and beam failure detection can be performed based on the first reference signal.

[0113] 9. The reference signal set used by the terminal for beam failure detection includes the first reference signal. For example, the reference signal set configured for failure detection by the terminal includes the first reference signal, or the first reference signal is configured as a reference signal for failure detection.

[0114] It should be noted that the second condition can be any of the above nine sub-conditions or any combination thereof, and may even include other similar conditions. This application does not make any specific limitations on this.

[0115] In this embodiment, when the second condition is met, the terminal performs beam failure detection based on the first reference signal, enabling the terminal to perform beam failure detection based on the first reference signal in appropriate scenarios. This not only ensures the performance of beam failure detection while saving network energy, but also reduces the latency of beam failure detection.

[0116] Furthermore, since network-side devices indicate the PDCCH beam before scheduling data on the SCell, and currently the QCL resource of the PDCCH is not set as an SSB, terminals typically do not perform beam failure detection for this SCell based on the SSB associated with the SCell. In this embodiment, if the second condition includes: the cell associated with the first reference signal is not a secondary cell, or if the second condition includes: the cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell, the SCell meets the restriction that the terminal will not perform BFD based on the reference signal of the SCell, thereby ensuring the compatibility of the beam failure detection method and protocol provided in this application.

[0117] In some embodiments, if a third condition is met, the terminal performs beam failure detection based on the first reference signal being transmitted.

[0118] The third condition includes at least one of the following:

[0119] The cell associated with the first reference signal is not a secondary cell;

[0120] The cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell;

[0121] The Physical Downlink Control Channel (PDCCH) and the first reference signal are quasi-co-located;

[0122] The bandwidth of the first reference signal is the same as the bandwidth of the physical downlink control channel (PDCCH).

[0123] The bandwidth of the first reference signal is the same as the bandwidth of the channel state information reference signal CSI-RS;

[0124] The cell associated with the first reference signal is not configured with Transmission Configuration Indication (TCI) status or quasi-co-location information for the Physical Downlink Control Channel (PDCCH);

[0125] The reference signal set used by the terminal for beam failure detection includes the first reference signal;

[0126] The network has not configured or indicated at least one of the following for the first reference signal: data transmission, transmission duration, or stop time;

[0127] The first reference signal is deactivated based on deactivation signaling;

[0128] The number of times the first reference signal is transmitted is greater than the first number threshold;

[0129] The transmission duration of the first reference signal is greater than the first duration threshold;

[0130] The remaining number of transmissions of the first reference signal is greater than the second threshold;

[0131] The remaining transmission duration of the first reference signal is greater than the second duration threshold.

[0132] For example, if the third condition is met, the terminal performs beam failure detection based on the first reference signal being transmitted. That is, if the terminal detects that the third condition is met, the terminal performs beam failure detection based on the first reference signal being transmitted.

[0133] For example, the third condition includes at least one of the following:

[0134] 1. The cell associated with the first reference signal is not a secondary cell. Since network-side equipment indicates the PDCCH beam before scheduling data on the SCell, and currently the QCL resource of the PDCCH is not set as an SSB, terminals typically do not perform beam failure detection for this SCell based on the SSB associated with that SCell. Therefore, when the cell associated with the first reference signal is not a secondary cell, the first reference signal can be used for beam failure detection.

[0135] 2. The cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell. Since network-side equipment indicates the PDCCH beam before scheduling data on the SCell, and currently the QCL resource of the PDCCH is not set as an SSB, terminals typically do not perform beam failure detection for this SCell based on the SSB associated with that SCell. Therefore, when the cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell, it indicates that the first reference signal can be used for beam failure detection.

[0136] 3. Quasi-co-addressing of PDCCH and the first reference signal. When PDCCH and the first reference signal are quasi-co-addressed, the terminal is allowed to perform beam failure detection based on the first reference signal. In other words, when PDCCH and the first reference signal are quasi-co-addressed, the measurement results of the terminal on the first reference signal can reflect the beam status of PDCCH.

[0137] 4. The bandwidth of the first reference signal is the same as the bandwidth of the PDCCH. This can be understood as: the bandwidth of the first reference signal can be extended in the frequency domain, or the measurement results of the first reference signal can reflect the beam pattern of the PDCCH.

[0138] 5. The bandwidth of the first reference signal is the same as the bandwidth of the Channel State Information Reference Signal (CSI-RS). This can be understood as: the bandwidth of the first reference signal can be extended in the frequency domain, or the measurement results of the first reference signal can reflect the beam situation in the same way as CSI-RS.

[0139] 6. The cell associated with the first reference signal does not have a PDCCH Transmission Configuration Indicator (TCI) status or quasi-co-location information configured. For example, the cell associated with the first reference signal does not have a PDCCH TCI status or QCL resources configured. In this case, there is no restriction that the PDCCH QCL resources can only be CSI-RS, so beam failure detection can be performed based on the first reference signal.

[0140] 7. The reference signal set used by the terminal for beam failure detection includes the first reference signal. For example, the reference signal set configured by the terminal for failure detection includes the first reference signal, or in other words, the first reference signal is configured as a reference signal for failure detection.

[0141] 8. The network does not configure or indicate at least one of the following for the first reference signal: data transmission, transmission duration, or stop time. For example, if the network does not configure or indicate at least one of the following for the first reference signal: data transmission, transmission duration, or stop time, it indicates that the first reference signal is deactivated based on deactivation signaling. In other words, the first reference signal is considered deactivated only when the terminal receives deactivation signaling, or it indicates that the network will not deactivate the first reference signal within a certain period of time. In this case, it can be considered that the terminal can receive enough of the first reference signal for beam failure detection, thereby enabling the terminal to perform beam failure detection based on the first reference signal.

[0142] 9. The first reference signal is deactivated based on a deactivation signaling. In other words, the first reference signal is considered deactivated only when the terminal receives a deactivation signaling. It can be assumed that if the terminal does not receive a deactivation signaling, it can receive enough of the first reference signal for beam failure detection, thereby enabling the terminal to perform beam failure detection based on the first reference signal.

[0143] 10. The number of first reference signals transmitted is greater than a first number threshold. When the number of first reference signals transmitted is greater than the first number threshold, it can be considered that the terminal can receive enough first reference signals for beam failure detection, thereby enabling the terminal to perform beam failure detection based on the first reference signals.

[0144] 11. The transmission duration of the first reference signal is greater than a first duration threshold. When the transmission duration of the first reference signal is greater than the first duration threshold, it can be considered that the terminal can receive enough of the first reference signal for beam failure detection, thereby enabling the terminal to perform beam failure detection based on the first reference signal.

[0145] 12. The remaining number of transmissions of the first reference signal is greater than the second threshold. When the remaining number of transmissions of the first reference signal is greater than the second threshold, it indicates that the terminal can still receive enough of the first reference signal for beam failure detection, that is, the terminal is able to perform beam failure detection based on the first reference signal.

[0146] 13. The remaining transmission duration of the first reference signal is greater than the second duration threshold. When the remaining transmission duration of the first reference signal is greater than the second duration threshold, it indicates that the terminal can still receive enough of the first reference signal for beam failure detection, that is, the terminal is able to perform beam failure detection based on the first reference signal.

[0147] It should be noted that the third condition can be any of the above 13 sub-conditions or any combination thereof, and may even include other similar conditions. This application does not make any specific limitation on this.

[0148] In this embodiment, when the third condition is met, the terminal performs beam failure detection based on the first reference signal. This enables the terminal to perform beam failure detection based on the first reference signal in appropriate scenarios, ensuring beam failure detection performance while maintaining network energy efficiency and reducing beam failure detection latency. Furthermore, since the first reference signal is a currently transmitting reference signal, its utilization rate can also be improved.

[0149] In some embodiments, the method 200 further includes:

[0150] The terminal sends the first information;

[0151] The first information includes at least one of the following:

[0152] The index of the first reference signal;

[0153] The measurement results of the first reference signal;

[0154] Index of the second reference signal;

[0155] Measurement results of the second reference signal;

[0156] The detection result indication of beam failure detection.

[0157] Exemplarily, the terminal may send the first information to the network, or the terminal may send the first information to a higher layer. If the first reference signal is used for beam recovery, the first information includes at least one of the following: the index of the first reference signal, the measurement result of the first reference signal, the index of the second reference signal, and the measurement result of the second reference signal. If the first reference signal is used for beam failure detection, the first information includes at least one of the following: the index of the first reference signal; the measurement result of the first reference signal; and an indication of the detection result of beam failure detection. The second reference signal includes at least one of the following: a non-on-demand triggering reference signal, a periodic reference signal, a semi-static reference signal, and a non-periodic reference signal. For example, the second reference signal includes at least one of the following: an SSB or a CSI-RS. For example, the second reference signal may be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or partial functions.

[0158] For example, after receiving the first information, the network-side device can deactivate the first reference signal, increase the transmission period of the first reference signal, or set the transmission period of the first reference signal to the default transmission period to achieve network energy saving.

[0159] For example, the first information includes at least one of the following:

[0160] 1. Index of the first reference signal. The index of the first reference signal can be indicated by its positions in the burst, or by the associated preamble, or by the associated physical random access channel (PRACH) occasion (RO). For example, when the first reference signal is an on-demand triggered SSB, its specific index can be indicated by its associated SSB positions in the burst. It is understood that when the terminal performs beam recovery based on the first reference signal, the terminal can indicate candidate beams or determined new beams by reporting the index of the first reference signal.

[0161] 2. Measurement results of the first reference signal. For example, the measurement results of the first reference signal may include at least one of the following: Layer 1 Reference Signal Receiving Power (L1-RSRP), Layer 1 Signal to Interference plus Noise Ratio (L1-SINR), Layer 1 Signal to Noise Ratio (L1-SNR), and Layer 1 Reference Signal Receiving Quality (L1-RSRQ). It is understood that when the terminal performs beam recovery based on the first reference signal, the terminal can report the measurement results of the first reference signal to the network side or higher layers of the terminal to determine candidate beams or new beams.

[0162] 3. Index of the Second Reference Signal. The index of the second reference signal can be indicated by the position in the burst, or by the associated preamble, or by the associated Physical Random Access Channel (PRACH) occasion (RO). The second reference signal includes at least one of the following: a non-on-demand triggering reference signal, a periodic reference signal, a semi-static reference signal, or a non-periodic reference signal. For example, the second reference signal includes at least one of the following: an SSB or a CSI-RS. For example, the second reference signal can be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or partial functions. For example, when the second reference signal is a periodic SSB, its index can be indicated by the position in the burst (ssb-positionsinburst). For example, when a terminal performs beam recovery based on a first reference signal, and the first and second reference signals are QCL (Quasi-Co-located), the terminal can indicate a candidate beam or a newly determined beam by reporting the index of the second reference signal. This may be because the first reference signal is not configured in the terminal's candidate beam reference signal set, so the terminal indicates the beam by reporting the index of the quasi-co-located second reference signal.

[0163] 4. Measurement results of the second reference signal. For example, the measurement results of the second reference signal may include at least one of the following: L1-RSRP, L1-SINR, L1-SNR, L1-RSRQ. The second reference signal includes at least one of the following: a non-on-demand triggered reference signal, a periodic reference signal, a semi-static reference signal, or a non-periodic reference signal. For example, the second reference signal includes at least one of the following: SSB or CSI-RS. For example, the second reference signal may be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or partial functions. For example, when the terminal performs beam recovery based on the first reference signal, when the first reference signal and the second reference signal are QCL, the terminal can indicate a candidate beam or a determined new beam by reporting the index of the second reference signal. This may be because the terminal's candidate beam reference signal set does not have a first reference signal configured, so the terminal reports the measurement result of the first reference signal as the measurement result of the quasi-co-located second reference signal. One possible implementation is to report the index of the second reference signal and the measurement result of the first reference signal; another is to report the index of the second reference signal and the measurement result of the second reference signal, in which case the measurement result of the second reference signal is actually still the measurement result of the first reference signal.

[0164] 5. Beam failure detection result indication. For example, the beam failure detection result indication can be an indication of the failure detection result. For example, the terminal performs beam failure detection based on a first reference signal, and when a beam failure is determined to have occurred, it reports this detection result to notify the network side or higher layers.

[0165] It should be noted that the first information may also include any information or combination of the above four information, and may even include other information. This application does not make specific limitations in this regard.

[0166] It should be noted that in this embodiment, when the first reference signal and the second reference signal are quasi-co-located, especially when the first reference signal and the second reference signal are quasi-co-located under the same index value, it is not necessary to distinguish whether the reference signal index reported by the terminal is the index of the first reference signal or the index of the second reference signal; it is simply considered to be the index of the reference signal.

[0167] It should also be noted that in this embodiment, when the first reference signal and the second reference signal are quasi-co-located, especially when the first reference signal and the second reference signal are quasi-co-located under the same index value, the measurement result of the reference signal reported by the terminal can be considered as the measurement result of the first reference signal or the measurement result of the second reference signal, without distinguishing whether it is the measurement result of the first reference signal or the measurement result of the second reference signal. In this case, the terminal may combine the measurement results of the first reference signal and the measurement results of the second reference signal.

[0168] In this embodiment, after the terminal performs beam management based on the first reference signal, the terminal sends the first information, which can ensure the performance of beam management while saving network energy.

[0169] In some embodiments, the terminal sends the first information when the fourth condition is met;

[0170] The fourth condition includes at least one of the following:

[0171] The reference signal set used by the terminal for beam recovery includes the first reference signal;

[0172] The terminal requested the first reference signal;

[0173] The measurement result of the first reference signal is greater than or equal to the second threshold;

[0174] The first information includes at least one of the following:

[0175] The index of the first reference signal;

[0176] The measurement result of the first reference signal.

[0177] For example, if the first reference signal is used for beam recovery, the terminal sends the first information when the fourth condition is met. The first information includes at least one of the following: the index of the first reference signal, and the measurement result of the first reference signal.

[0178] For example, the fourth condition includes at least one of the following:

[0179] 1. The reference signal set used by the terminal for beam recovery includes the first reference signal. For example, the candidate beam reference signal set configured for the terminal includes the first reference signal, or the first reference signal is configured as a reference signal for beam recovery.

[0180] 2. The terminal has requested the first reference signal. For example, the terminal has sent a request to transmit the first reference signal.

[0181] 3. The measurement result of the first reference signal is greater than or equal to the second threshold. The second threshold and the threshold used for the measurement result of the second reference signal may be the same or different. The second reference signal includes at least one of the following: a non-on-demand triggering reference signal, a periodic reference signal, a semi-static reference signal, or a non-periodic reference signal. For example, the second reference signal includes at least one of the following: SSB or CSI-RS. For example, the second reference signal may be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or partial functions. For example, when the transmission power of the first reference signal and the transmission power of the second reference signal are different, or when the coverage area of ​​the first reference signal and the coverage area of ​​the second reference signal are different, the second threshold and the threshold used for the measurement result of the second reference signal may be different.

[0182] It should be noted that the fourth condition can be any of the above three sub-conditions or any combination thereof, and may even include other similar conditions. This application does not specifically limit this.

[0183] It should be noted that in this embodiment, when the first reference signal and the second reference signal are quasi-co-located, especially when the first reference signal and the second reference signal are quasi-co-located under the same index value, it is not necessary to distinguish whether the reference signal index reported by the terminal is the index of the first reference signal or the index of the second reference signal; it is simply considered to be the index of the reference signal.

[0184] It should also be noted that in this embodiment, when the first reference signal and the second reference signal are quasi-co-located, especially when the first reference signal and the second reference signal are quasi-co-located under the same index value, the measurement result of the reference signal reported by the terminal can be considered as the measurement result of the first reference signal or the measurement result of the second reference signal, without distinguishing whether it is the measurement result of the first reference signal or the measurement result of the second reference signal. In this case, the terminal may combine the measurement results of the first reference signal and the measurement results of the second reference signal.

[0185] In this embodiment, when the fourth condition is met, the terminal sends the first information, which not only ensures beam management performance while saving network energy.

[0186] In some embodiments, the terminal sends the first information when the fifth condition is met;

[0187] The fifth condition includes at least one of the following:

[0188] The reference signal set used by the terminal for beam recovery includes the second reference signal;

[0189] The reference signal set used by the terminal for beam recovery does not include the first reference signal;

[0190] The first reference signal and the second reference signal are quasi-co-addressable in a QCL.

[0191] The measurement result of the first reference signal is greater than or equal to the second threshold;

[0192] The first information includes at least one of the following:

[0193] The index of the second reference signal;

[0194] The measurement result of the second reference signal.

[0195] For example, if the first reference signal is used for beam recovery, the terminal sends the first information when the fifth condition is met. The first information includes at least one of the following: the index of the second reference signal, and the measurement result of the second reference signal.

[0196] For example, the fifth condition includes at least one of the following:

[0197] 1. The reference signal set used by the terminal for beam recovery includes the second reference signal. The second reference signal includes at least one of the following: a non-on-demand triggered reference signal, a periodic reference signal, a semi-static reference signal, and a non-periodic reference signal. For example, the second reference signal includes at least one of the following: SSB or CSI-RS. For example, the second reference signal can be a periodic SSB or a periodic CSI-RS. As another example, the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or partial functions.

[0198] 2. The reference signal set used by the terminal for beam recovery does not include the first reference signal. For example, the reference signal set configured by the terminal for beam recovery does not include the first reference signal, or in other words, the first reference signal is configured as a reference signal not used for beam recovery.

[0199] 3. The first reference signal and the second reference signal are quasi-co-located in a QCL. The second reference signal includes at least one of the following: a non-on-demand triggering reference signal, a periodic reference signal, a semi-static reference signal, and a non-periodic reference signal. For example, the second reference signal includes at least one of the following: an SSB or a CSI-RS. For example, the second reference signal can be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or some of the functions. When the first reference signal and the second reference signal are quasi-co-located, the terminal is allowed to perform beam recovery based on the first reference signal; or, when the first reference signal and the second reference signal are quasi-co-located, the detection result of the terminal on the first reference signal can reflect the beam situation of the second reference signal.

[0200] 4. The measurement result of the first reference signal is greater than or equal to the second threshold. The second threshold and the threshold used for the measurement result of the second reference signal may be the same or different. The second reference signal includes at least one of the following: a non-on-demand triggering reference signal, a periodic reference signal, a semi-static reference signal, or a non-periodic reference signal. For example, the second reference signal includes at least one of the following: SSB or CSI-RS. For example, the second reference signal may be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or partial functions. For example, when the transmission power of the first reference signal and the transmission power of the second reference signal are different, or when the coverage area of ​​the first reference signal and the coverage area of ​​the second reference signal are different, the second threshold and the threshold used for the measurement result of the second reference signal may be different. In this case, the measurement result of the second reference signal is actually still the measurement result of the first reference signal. Therefore, the terminal may also report the measurement result of the first reference signal and the index of the second reference signal.

[0201] It should be noted that the fifth condition can be any of the four sub-conditions mentioned above or any combination thereof, and may even include other similar conditions. This application does not specifically limit this.

[0202] It should be noted that in this embodiment, when the first reference signal and the second reference signal are quasi-co-located, especially when the first reference signal and the second reference signal are quasi-co-located under the same index value, it is not necessary to distinguish whether the reference signal index reported by the terminal is the index of the first reference signal or the index of the second reference signal; it is simply considered to be the index of the reference signal.

[0203] It should also be noted that in this embodiment, when the first reference signal and the second reference signal are quasi-co-located, especially when the first reference signal and the second reference signal are quasi-co-located under the same index value, the measurement result of the reference signal reported by the terminal can be considered as the measurement result of the first reference signal or the measurement result of the second reference signal, without distinguishing whether it is the measurement result of the first reference signal or the measurement result of the second reference signal. In this case, the terminal may combine the measurement results of the first reference signal and the measurement results of the second reference signal.

[0204] In this embodiment, when the fifth condition is met, the terminal sends the first information, which can ensure the performance of beam management while saving network energy.

[0205] In some embodiments, the terminal sends the first information when the sixth condition is met;

[0206] The sixth condition includes at least one of the following:

[0207] The reference signal set used by the terminal for beam failure detection includes the first reference signal;

[0208] The terminal requested the first reference signal;

[0209] The measurement result of the first reference signal is less than or equal to the third threshold;

[0210] The terminal determined that the beam failed;

[0211] The first information includes at least one of the following:

[0212] The index of the first reference signal;

[0213] The measurement results of the first reference signal;

[0214] The detection result indication of beam failure detection.

[0215] For example, if the first reference signal is used for beam failure detection, the terminal sends the first information when the sixth condition is met. The first information includes at least one of the following: the index of the first reference signal; the measurement result of the first reference signal; and an indication of the detection result of the beam failure detection.

[0216] For example, the sixth condition includes at least one of the following:

[0217] 1. The reference signal set used by the terminal for beam failure detection includes the first reference signal. For example, the reference signal set configured for failure detection by the terminal includes the first reference signal, or the first reference signal is configured as a reference signal for failure detection.

[0218] 2. The terminal has requested the first reference signal. For example, the terminal has sent a request to transmit the first reference signal.

[0219] 3. The measurement result of the first reference signal is less than or equal to a third threshold. The third threshold and the threshold used for the measurement result of the second reference signal may be the same or different. The second reference signal includes at least one of the following: a non-on-demand triggering reference signal, a periodic reference signal, a semi-static reference signal, or a non-periodic reference signal. For example, the second reference signal includes at least one of the following: SSB or CSI-RS. For example, the second reference signal may be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or partial functions. For example, when the transmission power of the first reference signal and the transmission power of the second reference signal are different, or when the coverage area of ​​the first reference signal and the coverage area of ​​the second reference signal are different, the third threshold and the threshold used for the measurement result of the second reference signal may be different. The third threshold and the second threshold mentioned above may be the same or different.

[0220] 4. The terminal determines that a beam failure has occurred. For example, the terminal detects that a beam failure has occurred.

[0221] It should be noted that the sixth condition can be any of the four sub-conditions mentioned above or any combination thereof, and may even include other similar conditions. This application does not specifically limit this.

[0222] It should be noted that in this embodiment, when the first reference signal and the second reference signal are quasi-co-located, especially when the first reference signal and the second reference signal are quasi-co-located under the same index value, it is not necessary to distinguish whether the reference signal index reported by the terminal is the index of the first reference signal or the index of the second reference signal; it is simply considered to be the index of the reference signal.

[0223] It should also be noted that in this embodiment, when the first reference signal and the second reference signal are quasi-co-located, especially when the first reference signal and the second reference signal are quasi-co-located under the same index value, the measurement result of the reference signal reported by the terminal can be considered as the measurement result of the first reference signal or the measurement result of the second reference signal, without distinguishing whether it is the measurement result of the first reference signal or the measurement result of the second reference signal. In this case, the terminal may combine the measurement results of the first reference signal and the measurement results of the second reference signal.

[0224] In this embodiment, when the sixth condition is met, the terminal sends the first information, which can ensure the performance of beam management while saving network energy.

[0225] In some embodiments, the method 200 further includes at least one of the following:

[0226] The terminal sends the second information;

[0227] The terminal receives third information;

[0228] The second information is used to request the network to send the first reference signal, and the third information is used to indicate the transmission information of the first reference signal.

[0229] For example, the terminal sends the second information, and the network-side device receives the second information, which is used to request the network to send the first reference signal. For instance, the terminal may repeatedly send the second information, the number of repetitions of which may be pre-configured by the network or determined by the terminal based on a pre-configured parameter set of the network. The second information is carried by at least one of the following: Uplink Control Information (UCI), Media Access Control (MAC) Control Element (CE), Radio Resource Control (RRC) signaling, Message (Msg)1, Message (Msg)3, Scheduling Request (SR), Buffer Status Report (BSR), and Physical Uplink Shared Channel (PUSCH).

[0230] For example, when the second information is used to request the network to send the first reference signal, the second information can also be used to request the network to activate the first reference signal. Furthermore, the terminal can request the network to cancel sending the first reference signal; for example, the terminal can request the network to deactivate the first reference signal.

[0231] For example, the network-side device sends the third information, and the terminal receives the third information, which is used to indicate the transmission information of the first reference signal. Optionally, after receiving the third information, the network-side device may also send feedback information. When the cell associated with the first reference signal is an SCell, the feedback information is sent to the terminal through a cell other than the SCell, such as a PCell; when the cell associated with the first reference signal is a PCell, no feedback information is sent. Optionally, the feedback information is carried in Downlink Control Information (DCI), MAC CE, or Physical Downlink Shared Channel (PDSCH). When the feedback information is carried in DCI, at least one of the following is satisfied:

[0232] 1. Its format is DCI 1-0, 2-7, or a dedicated DCI format.

[0233] When using DCI formats such as DCI 1-0 or DCI 2-7, feedback information is indicated by a dedicated indicator field, or by reserved bits, or by the format reserved in the indicator field, or by a reinterpretation of an existing indicator field, or by 1 bit indicating whether feedback information is included, or whether an existing indicator field is reinterpreted.

[0234] 2. Scrambling is performed using the Cell Radio Network Temporary Identifier (C-RNTI), or the Energy Saving Related Radio Network Temporary Identifier (RNTI), or relevant RNTI scrambling is triggered as needed.

[0235] For example, an existing RNTI, or a dedicated RNTI.

[0236] It should be noted that the content of the feedback information can be referenced from the content of the third information, and will not be repeated here to avoid repetition.

[0237] For example, the third information is used to indicate activation of the transmission of the first reference signal, or the third indication information is used to change the transmission period of the first reference signal, or the third information is used to indicate deactivation of the transmission of the first reference signal. Optionally, when the terminal receives the third information, which indicates activation of the transmission of the first reference signal or changes the transmission period of the first reference signal, the terminal performs beam management based on the first reference signal. Optionally, when the terminal sends the aforementioned first information, the terminal receives the third information, which is used to deactivate the transmission of the first reference signal.

[0238] In this embodiment, the terminal sending the second information or receiving the third information can ensure that the terminal successfully receives the first reference signal or can ensure that the terminal successfully deactivates the first reference signal after beam management, that is, it can ensure the performance of beam management while saving network energy.

[0239] In some embodiments, the terminal sends the second information when the seventh condition is met;

[0240] The seventh condition includes at least one of the following:

[0241] The terminal determined that the beam failed;

[0242] The count of beam failure instances (BFI) is greater than or equal to the first threshold.

[0243] The terminal requested the first reference signal;

[0244] The cell that experienced beam failure is transmitting the first reference signal;

[0245] The reference signal set used by the terminal for beam recovery does not include the second reference signal;

[0246] The reference signal set used by the terminal for beam recovery includes a second reference signal, and the period of the second reference signal is greater than or equal to a period threshold.

[0247] The terminal was not configured with a reference signal set for beam recovery;

[0248] The reference signal set used by the terminal for beam recovery includes the first reference signal;

[0249] The terminal performed beam failure detection based on a reference signal triggered on demand;

[0250] The terminal has available uplink authorization;

[0251] The terminal received an indication that the beam failure was determined based on the artificial intelligence (AI) unit;

[0252] The terminal receives an indication that the measurement result of beam failure detection is less than or equal to the fourth threshold.

[0253] For example, if the first reference signal is used for beam recovery, the terminal sends the second information if the seventh condition is met.

[0254] For example, the seventh condition includes at least one of the following:

[0255] 1. The terminal determines that a beam failure has occurred. For example, the terminal detects that a beam failure has occurred.

[0256] 2. The BFI count is greater than or equal to the first threshold. For example, the BFI count can be the count of the BFI counter.

[0257] 3. The terminal has requested the first reference signal. For example, the terminal has sent a request to transmit the first reference signal.

[0258] 4. The cell experiencing beam failure is transmitting the first reference signal. For example, the cell experiencing beam failure is transmitting the first reference signal, which is a network-triggered or terminal-triggered reference signal.

[0259] 5. The reference signal set used by the terminal for beam recovery does not include the second reference signal. For example, the reference signal set configured by the terminal for beam recovery does not include the second reference signal, or in other words, the second reference signal is configured not to be used for beam recovery. The second reference signal includes at least one of the following: a non-on-demand triggered reference signal, a periodic reference signal, a semi-static reference signal, or a non-periodic reference signal. For example, the second reference signal includes at least one of the following: SSB or CSI-RS. For example, the second reference signal can be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or partial functions.

[0260] 6. The reference signal set used by the terminal for beam recovery includes a second reference signal, and the period of the second reference signal is greater than or equal to a period threshold. The second reference signal includes at least one of the following: a non-on-demand triggered reference signal, a periodic reference signal, a semi-static reference signal, or a non-periodic reference signal. For example, the second reference signal includes at least one of the following: SSB or CSI-RS. For example, the second reference signal can be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or partial functions.

[0261] 7. The terminal is not configured with a reference signal set for beam recovery.

[0262] 8. The reference signal set for beam recovery of the terminal includes the first reference signal. For example, the reference signal set for beam recovery configured for the terminal includes the first reference signal, or the first reference signal is configured as a reference signal for beam recovery.

[0263] 9. The terminal performs beam failure detection based on a reference signal triggered on demand;

[0264] 10. The terminal has available uplink authorization;

[0265] 11. The terminal receives an indication that the beam has failed, based on an artificial intelligence (AI) unit.

[0266] 12. The terminal receives an indication that the measurement result of beam failure detection is less than or equal to the fourth threshold.

[0267] It should be noted that the seventh condition can be any of the above 12 sub-conditions or any combination thereof, and may even include other similar conditions. This application does not make any specific limitation on this.

[0268] In this embodiment, when the seventh condition is met, the terminal sends the second information, enabling the terminal to request the first reference signal and perform beam recovery in a suitable scenario. This not only ensures the performance of beam recovery while saving network energy, but also improves the recovery efficiency of beam recovery.

[0269] Furthermore, if the seventh condition includes: the terminal has available uplink authorization, it means that the terminal needs to send the second information based on the available uplink authorization. This can prevent the terminal from sending a scheduling request (SR) to request uplink resources in order to request the first reference signal, thereby reducing the reception delay of the first reference signal.

[0270] In some embodiments, the terminal sends the second information when the eighth condition is met;

[0271] The eighth condition includes at least one of the following:

[0272] The terminal was not configured with a reference signal set for beam failure detection;

[0273] The reference signal set used by the terminal for beam failure detection includes a second reference signal, and the period of the second reference signal is greater than or equal to a period threshold.

[0274] A beam failure instance BFI count is greater than or equal to a first threshold, where the first threshold is greater than or equal to 1.

[0275] The first threshold of the beam failure instance BFI is greater than or equal to 1;

[0276] The Physical Downlink Control Channel (PDCCH) and the first reference signal are quasi-co-located;

[0277] The bandwidth of the first reference signal is the same as the bandwidth of the physical downlink control channel (PDCCH).

[0278] The bandwidth of the first reference signal is the same as the bandwidth of the channel state information reference signal CSI-RS;

[0279] The bit error rate detected by the terminal is greater than or equal to the bit error rate threshold;

[0280] The error rate detected by the terminal is greater than or equal to the error rate threshold;

[0281] The measurement result of the second reference signal is less than or equal to the fifth threshold;

[0282] The terminal receives a beam indication;

[0283] The cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell.

[0284] For example, if the first reference signal is used for beam failure detection, the terminal sends the second information if the eighth condition is met.

[0285] For example, the eighth condition includes at least one of the following:

[0286] 1. The terminal is not configured with a reference signal set for beam failure detection.

[0287] 2. The reference signal set used by the terminal for beam failure detection includes a second reference signal, and the period of the second reference signal is greater than or equal to a period threshold. The second reference signal includes at least one of the following: a non-on-demand triggered reference signal, a periodic reference signal, a semi-static reference signal, or a non-periodic reference signal. For example, the second reference signal includes at least one of the following: SSB or CSI-RS. For example, the second reference signal can be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or partial functions.

[0288] 3. The BFI count is greater than or equal to a first threshold, where the first threshold is greater than or equal to 1. For example, the BFI count can be the count of a BFI counter.

[0289] 4. The first threshold of BFI is greater than or equal to 1. For example, the count of BFI can be the count of a BFI counter.

[0290] 5. Quasi-co-addressing of PDCCH and the first reference signal. When PDCCH and the first reference signal are quasi-co-addressed, the terminal is allowed to perform beam failure detection based on the first reference signal. In other words, when PDCCH and the first reference signal are quasi-co-addressed, the detection result of the terminal on the first reference signal can reflect the beam status of PDCCH.

[0291] 6. The bandwidth of the first reference signal is the same as the bandwidth of the Physical Downlink Control Channel (PDCCH). This can be understood as: the bandwidth of the first reference signal can be extended in the frequency domain, or the detection result of the first reference signal can better reflect the beam situation of the PDCCH.

[0292] 7. The bandwidth of the first reference signal is the same as the bandwidth of the Channel State Information Reference Signal (CSI-RS). This can be understood as: the bandwidth of the first reference signal can be extended in the frequency domain, or the detection result of the first reference signal can better reflect the beam situation of the CSI-RS.

[0293] 8. The bit error rate detected by the terminal is greater than or equal to the bit error rate threshold. When the bit error rate detected by the terminal is greater than or equal to the bit error rate threshold, it indicates that the channel conditions have deteriorated, that is, beam failure may occur.

[0294] 9. The block error rate detected by the terminal is greater than or equal to the block error rate threshold. When the block error rate detected by the terminal is greater than or equal to the block error rate threshold, it indicates that the channel conditions have deteriorated, i.e., beam failure may occur.

[0295] 10. The measurement result of the second reference signal is less than or equal to the fifth threshold. The second reference signal includes at least one of the following: a non-on-demand triggered reference signal, a periodic reference signal, a semi-static reference signal, or a non-periodic reference signal. For example, the second reference signal includes at least one of the following: SSB or CSI-RS. For example, the second reference signal can be a periodic SSB or a periodic CSI-RS. Another example is that the second reference signal is an always-on SSB. It should be noted that the SSB or CSI-RS involved in this application can also be equivalently replaced by other reference signals that can achieve the same or partial functions. When the measurement result of the second reference signal is less than or equal to the fifth threshold, it indicates that the channel conditions have deteriorated, i.e., beam failure may occur.

[0296] 11. The terminal receives a beam indication. For example, after the network indicates a beam, it triggers the terminal to perform continuous or short-term beam failure detection based on the first reference signal. The beam indication received by the terminal is used to indicate the communication beam or a new beam used by the terminal.

[0297] 12. The cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell. Since network-side equipment indicates the PDCCH beam before scheduling data on the SCell, and currently the QCL resource of the PDCCH is not set as an SSB, terminals typically do not perform beam failure detection for this SCell based on the SSB associated with that SCell. Therefore, when the cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell, it indicates that the first reference signal can be used for beam failure detection.

[0298] It should be noted that the eighth condition can be any sub-condition or any combination of the above 12 sub-conditions, and may even include other similar conditions. This application does not make any specific limitation in this regard.

[0299] In this embodiment, when the eighth condition is met, the terminal sends the second information, enabling the terminal to request the first reference signal and perform beam failure detection in a suitable scenario. This not only ensures beam recovery performance while saving network energy, but also improves the failure detection efficiency of beam failure detection.

[0300] Furthermore, if the eighth condition includes a first threshold of BFI greater than or equal to 1, it can reduce the probability that the terminal will fail to initiate beam recovery due to a sudden deterioration of the channel conditions for a very short time.

[0301] In some embodiments, the terminal sends the second information on the first resource;

[0302] Wherein, the first resource satisfies at least one of the following:

[0303] Pre-configured by the network;

[0304] Instructed by the network;

[0305] Determined based on the uplink authorization available to the terminal;

[0306] Resource determination based on the terminal request.

[0307] For example, the first resource may be pre-configured by the network; for instance, periodic uplink resources may be used as the first resource or as resources dedicated to the terminal for transmitting the second information. Alternatively, the first resource may be indicated by the network; for example, periodic / semi-persistent / aperiodic uplink resources indicated by the network may be used as the first resource or as resources dedicated to the terminal for transmitting the second information. Alternatively, the network may indicate the first resource when indicating a TCI state or indicating a new beam. Alternatively, the terminal may determine the first resource from the uplink resources available in the uplink grant for the terminal. If the terminal does not have uplink resources for transmitting the second information, it may send a request message such as an SR / BSR to request uplink resources for transmitting the second information. The first resource may be a resource per UE, a resource per Media Access Control (MAC) entity, or a resource per group-common.

[0308] In this embodiment, since the first resource can be a network-preconfigured resource, a network-indicated resource, a resource determined based on the uplink authorization available to the terminal, or a resource determined based on the terminal's request, the terminal can acquire the first resource in a timely manner, thereby reducing the transmission latency of the second information. Furthermore, when the first resource is an existing resource, it avoids the terminal needing to send a scheduling request (SR) to request uplink resources in order to trigger the first reference signal, thus reducing the reception latency of the first reference signal.

[0309] In some embodiments, the second information or the third information includes at least one of the following:

[0310] The index of the first reference signal;

[0311] An index list, wherein the index list includes the index of the first reference signal;

[0312] Activation or deactivation information is used to indicate whether the first reference signal is activated or deactivated;

[0313] The cell or cell group information associated with the first reference signal;

[0314] The first reference signal is associated with at least one of the following: measurement object MO, measurement ID, reporting configuration ID, synchronization signal and / or physical broadcast channel block measurement timing configuration SMTC;

[0315] Frequency domain information of the first reference signal;

[0316] The type of the first reference signal;

[0317] The physical cell identifier (PCI) or PCI group information associated with the first reference signal;

[0318] The quasi-co-address QCL information of the first reference signal;

[0319] The time-domain plot of the first reference signal;

[0320] Instructions to repeatedly transmit the first reference signal;

[0321] Instructions for transmitting the first reference signal via beam scanning;

[0322] The time offset for sending or receiving the first reference signal;

[0323] The subcarrier spacing SCS of the first reference signal.

[0324] For example, the second information or the third information includes at least one of the following:

[0325] 1. Index of the first reference signal. The index of the first reference signal may be indicated by its position in the burst, or by the associated preamble, or by the associated physical random access channel (PRACH) occasion (RO). For example, if the first reference signal is an on-demand triggered SSB, its index may be indicated by its position in the SSB burst.

[0326] It should be noted that when the first reference signal and the second reference signal are quasi-co-located, especially when the first reference signal and the second reference signal are quasi-co-located under the same index value, it is not necessary to distinguish whether the reference signal index reported by the terminal is the index of the first reference signal or the index of the second reference signal; it can be simply regarded as the index of the reference signal.

[0327] 2. An index list comprising the indexes of the first reference signal. The index list may be indicated or determined by positions in a burst, by an associated preamble, or by an associated Physical Random Access Channel (PRACH) occasion (RO). For example, if the index list is an index list of on-demand triggered SSBs, its indexes may be indicated by SSB positions in a burst.

[0328] 3. Activation or deactivation information, used to indicate whether the first reference signal is activated or deactivated. For example, a 1-bit indication, where 1 represents activation of the first reference signal and 0 represents deactivation of the first reference signal.

[0329] 4. Information about the cell or cell group associated with the first reference signal.

[0330] 5. The first reference signal is associated with at least one of the following: Measurement Object (MO), Measurement ID, Reporting Configuration ID, Synchronization Signal and / or Physical Broadcast Channel Block Measurement Timing Configuration (SMTC).

[0331] 6. Frequency domain information of the first reference signal. For example, the frequency point, whether it is on a sync-raster. Another example is the bandwidth.

[0332] 7. The type of the first reference signal. For example, whether it is a cell-defining SSB.

[0333] 8. PCI or PCI group information associated with the first reference signal.

[0334] 9. QCL information of the first reference signal. For example, the QCL information includes at least one of the following: QCL source and QCL type.

[0335] 10. The time-domain pattern of the first reference signal. For example, the time-domain pattern includes at least one of the following: the index of the reference signal, the period of the reference signal, the start / end position of the reference signal, the number of transmissions of the reference signal, the number of transmission cycles, the transmission duration of the reference signal, and the length / start / end position of the reception time window of the reference signal.

[0336] 11. Instructions to repeatedly transmit the first reference signal.

[0337] 12. Instruction to transmit the first reference signal via beam scanning.

[0338] 13. The time offset for sending or receiving the first reference signal.

[0339] 14. Subcarrier spacing (SCS) of the first reference signal.

[0340] In this embodiment, by designing the content of the second information or the third information, the terminal can send appropriate content as the second information to the network-side device, or the network-side device can send appropriate content as the third information to the terminal, thereby improving the flexibility of the information content and enabling the sending of different content request first reference signals for different scenarios.

[0341] Furthermore, for beam failure detection, the terminal may measure the quality of some reference signals before beam failure. In this case, the terminal may have prior information about some reference signals. Therefore, the terminal only needs to request the reference signals for which measurements need to be performed. For example, the second information includes the index of the first reference signal to reduce the signaling overhead of the second information.

[0342] In some embodiments, the second information or the third information is indicated at at least one of the following granularities: serving cell, serving cell group, frequency point, frequency point group, physical cell identifier (PCI), PCI group, measurement object, measurement object group, beam, beam group.

[0343] For example, the second information or the third information may be an indication of each serving cell, each serving cell group, each frequency point, each frequency point group, each PCI, each PCI group, each measurement object, each measurement object group, each beam, or each beam group.

[0344] It should be noted that at least part of the second or third information may be predefined by the protocol, or pre-configured or configured on the network side. In such cases, this information does not need to be reflected in the second or third information. For example, if the protocol predefines that the first reference signal can only be NCD-SSB, then this information does not need to be carried in the second or third information.

[0345] By designing the granularity of the second information, the terminal can send the second information or the third information based on an appropriate granularity, thereby improving the flexibility of the information granularity and thus improving the flexibility of the terminal in requesting the first reference signal.

[0346] Figure 5 This is a schematic flowchart of a beam management method 300 according to an embodiment of this application.

[0347] like Figure 5 As shown, the beam management method 300 may include at least some of the following:

[0348] S301, The network-side device sends a first reference signal that is triggered on demand;

[0349] The first reference signal is used by the terminal for beam management, and the beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

[0350] In this embodiment, the network-side device sends a first reference signal triggered on demand, enabling the terminal to perform beam management based on the first reference signal triggered on demand, thus ensuring beam management performance while saving network energy.

[0351] In some embodiments, the method 300 further includes:

[0352] The network-side device receives the first information;

[0353] The first information includes at least one of the following:

[0354] The index of the first reference signal;

[0355] The measurement results of the first reference signal;

[0356] Index of the second reference signal;

[0357] Measurement results of the second reference signal;

[0358] The detection result indication of beam failure detection.

[0359] For example, the network-side device determines a new beam from the candidate beams in the first information reported by the terminal, and then instructs the terminal to do so.

[0360] In some embodiments, the method 300 further includes at least one of the following:

[0361] The network-side device receives the second information;

[0362] The network-side device sends third information;

[0363] The second information is used to request the network to send the first reference signal, and the third information is used to indicate the transmission information of the first reference signal.

[0364] In some embodiments, the network-side device receives the second information on a first resource;

[0365] Wherein, the first resource satisfies at least one of the following:

[0366] Pre-configured by the network;

[0367] Instructed by the network;

[0368] Determined based on the uplink authorization available to the terminal;

[0369] Resource determination based on the terminal request.

[0370] In some embodiments, the second information or the third information includes at least one of the following:

[0371] The index of the first reference signal;

[0372] An index list, wherein the index list includes the index of the first reference signal;

[0373] Activation or deactivation information is used to indicate whether the first reference signal is activated or deactivated;

[0374] The cell or cell group information associated with the first reference signal;

[0375] The first reference signal is associated with at least one of the following: measurement object MO, measurement ID, reporting configuration ID, synchronization signal and / or physical broadcast channel block measurement timing configuration SMTC;

[0376] Frequency domain information of the first reference signal;

[0377] The type of the first reference signal;

[0378] The physical cell identifier (PCI) or PCI group information associated with the first reference signal;

[0379] The quasi-co-address QCL information of the first reference signal;

[0380] The time-domain plot of the first reference signal;

[0381] Instructions to repeatedly transmit the first reference signal;

[0382] Instructions for transmitting the first reference signal via beam scanning;

[0383] The time offset for sending or receiving the first reference signal;

[0384] The subcarrier spacing SCS of the first reference signal.

[0385] In some embodiments, the second information or the third information is indicated at at least one of the following granularities: serving cell, serving cell group, frequency point, frequency point group, physical cell identifier (PCI), PCI group, measurement object, measurement object group, beam, beam group.

[0386] It should be understood that the beam management method 300 includes the process of the network-side device sending a first reference signal to the terminal. The terminology involved is similar to that of method 200. Therefore, the specific content can be referred to the relevant description in method 200. To avoid repetition, it will not be repeated here.

[0387] The beam management method provided in this application will be described below with reference to specific embodiments.

[0388] Example 1:

[0389] In this embodiment, the UE performs beam recovery based on OD-SSB. When the periodic SSB has a large period or does not exist, the UE achieves the purpose of beam recovery by sending OD-SSB faster, and also achieves network energy saving.

[0390] It should be noted that the scenarios for beam recovery based on OD-SSB include, but are not limited to, the following:

[0391] Scenario 1: The period of the periodic SSB is relatively large, and the delay of the UE using OD-SSB for beam recovery is relatively long. In this case, using OD-SSB can reduce the delay of beam recovery.

[0392] Scenario 2: If the UE does not have a periodic SSB configured in the reference signal set for beam recovery, then when the UE determines that a beam failure has occurred, it will perform beam recovery by triggering the OD-SSB.

[0393] Scenario 3: If the reference signal configured for beam recovery in the UE is OD-SSB, then when the UE determines that a beam failure has occurred, if there is no OD-SSB in the system, beam recovery will be triggered by OD-SSB; if there is an OD-SSB, beam recovery will be performed directly based on OD-SSB.

[0394] Scenario 4: The UE performs beam failure detection based on OD-SSB, and then continues to perform beam recovery based on OD-SSB.

[0395] Scenario 5: If the UE has available uplink resources to trigger OD-SSB, no additional uplink resources are needed, resulting in lower overall latency. In this case, beam recovery based on OD-SSB can be considered.

[0396] It should be noted that the above scenarios can be combined in any way.

[0397] Figure 6 This is a schematic flowchart of the beam management method 400 provided in the embodiments of this application.

[0398] like Figure 6 As shown, the method 400 may include:

[0399] S401, the UE detected BFD.

[0400] S402a, the UE triggers the transmission of OD-SSB.

[0401] In some sub-implementations, the OD-SSB is requested by the UE. For example, when the UE determines that a beam failure has occurred, it sends an OD-SSB through the uplink resource triggering network (NW) to perform beam recovery.

[0402] S402b, NW indicates the transmission of OD-SSB.

[0403] In some sub-implementations, the OD-SSB is triggered by the NW. The NW detects a downlink beam failure and begins transmitting the OD-SSB for the UE to perform beam recovery. At this time, the UE can also be instructed about the OD-SSB transmission information to unify the understanding between the NW and the UE. In some sub-implementations, an OD-SSB is already being transmitted within the system; in this case, the UE performs beam recovery based on the currently transmitted OD-SSB.

[0404] In some sub-implementations, when a UE requests an OD-SSB, only one bit of activation / deactivation information is needed. Other information is not carried in the OD-SSB triggering information but is predefined by the protocol or pre-configured by the NW. For example, parameters such as the number of OD-SSB transmissions, transmission period, number of transmission periods, transmission duration, frequency domain location, time domain location, SCS, transmission power, and PCI are required. In some sub-implementations, when a UE requests an OD-SSB, it needs to indicate PCI information and / or OD-SSB activation / deactivation information. The reason for indicating PCI information is that the UE's uplink resources are for each MAC entity, and one MAC entity is associated with one cell group. Therefore, it is necessary to specifically indicate in the uplink information which cell needs to transmit the OD-SSB. In some sub-implementations, the UE carries some OD-SSB parameter information in the OD-SSB triggering indication information for the NW to determine the OD-SSB transmission parameters. For example, at least one of the following parameters can be used for OD-SSB transmission: number of transmissions, transmission period, number of transmission periods, transmission duration, frequency domain location, time domain location, SCS, transmission power, and PCI (Physical Cell ID). In addition, the UE can indicate the OD-SSB transmission window / reception window / earliest reception location / latest reception location to the NW to avoid OD-SSB transmissions that are too early or too late, thereby achieving network energy saving.

[0405] In some sub-implementations, the UE's request for an OD-SSB indication message specifies the OD-SSB index. That is, the UE only triggers a portion of the SSBs within the OD-SSB burst, instead of transmitting all SSBs in the OD-SSB burst, or triggering all OD-SSB indices configured in the reference signal set for beam recovery, thereby achieving further network energy savings. This is because the UE may have some measurement results for certain beams, thus determining which beams require further measurement and which do not.

[0406] S403, NW sends OD-SSB to UE.

[0407] S404, the UE determines at least one OD-SSB based on the OD-SSB.

[0408] S405, the UE sends at least one OD-SSB and / or its measurement result to the NW.

[0409] In some sub-implementations, the UE indicates the index of at least one OD-SSB and / or its measurement result to a higher layer or NW. This measurement result needs to be greater than a pre-configured threshold. Optionally, the threshold corresponding to the OD-SSB may be different from the thresholds of other reference signals (e.g., periodic SSBs). Optionally, the index of this OD-SSB is located in the reference signal set used by the UE for beam recovery. In other sub-implementations, no OD-SSB is configured in the reference signal set used by the UE for beam recovery. Therefore, the UE still reports / indicates the index of the reference signal in the reference signal set used by the UE for beam recovery so that the NW can determine the new beam. The advantage is that if the beam with the same index as the periodic SSB does not have a QCL, the UE does not need to additionally indicate whether the reported beam corresponds to an OD-SSB or a periodic SSB. However, since the UE performs the measurement based on the OD-SSB, the reference signal reported by the UE needs to satisfy a certain QCL relationship with the corresponding OD-SSB that is higher than the measurement threshold. The QCL relationship includes at least one of QCL A, QCL B, QCL C, and QCL D, so as to ensure that the new beam indicated by the UE is reliable.

[0410] In some sub-implementations, the OD-SSB and the periodic SSB or other reference signal transmitted within the system satisfy at least one of the following relationships: identical beam (e.g., QCL), identical beam (QCL) with the same index, identical frequency domain, partially overlapping time domain candidate positions, identical transmission power, etc.

[0411] Example 2:

[0412] In this embodiment, the UE performs beam failure detection based on OD-SSB. When the periodic SSB has a large period or does not exist, the UE uses the faster transmission of OD-SSB to achieve the purpose of beam failure detection and to achieve network energy saving.

[0413] In some sub-implementations, the scenarios in which the UE performs beam failure detection based on OD-SSB include, but are not limited to, the following:

[0414] Scene 1:

[0415] The period of periodic SSB is relatively large, resulting in a long delay for beam failure detection. In this case, using OD-SSB can reduce the delay of beam failure detection.

[0416] Scenario 2: If the reference signal set used by the UE for failure detection does not have a (displayed) configured reference signal, the UE will perform beam failure detection by triggering OD-SSB.

[0417] Scenario 3: If there is an OD-SSB transmitting within the system, the UE will directly perform beam failure detection based on the OD-SSB.

[0418] In some sub-implementations, the UE triggers the OD-SSB to perform beam failure detection, which requires defining the conditions under which the UE requests the OD-SSB to perform beam failure detection.

[0419] As an example, the condition may include at least one of the following:

[0420] 1. PDCCH and OD-SSB QCL: When PDCCH and OD-SSB are in QCL, it can be assumed that the failure detection result of OD-SSB can reflect the beam failure status of PDCCH.

[0421] 2. The bandwidth of OD-SSB is the same as that of PDCCH / CSI-RS, or it can be stated that the bandwidth of OD-SSB can be extended in the frequency domain. When the bandwidths are different, the failure detection results of OD-SSB are difficult to reflect the beam failure status of PDCCH.

[0422] 3. The UE's failure detection reference signal is centrally configured with OD-SSB as the reference signal.

[0423] 4. The UE detects that the beam may fail to transmit, for example, due to a high bit error rate, a high block error rate, or by judging through channel reciprocity.

[0424] 5. The UE receives a beam indication. For example, after the NW indicates the beam, it triggers the UE to perform continuous or short-term beam failure detection based on the first reference signal. The beam indication received by the UE is used to indicate the communication beam or a new beam used by the UE.

[0425] 6. The cell associated with OD-SSB is PCell / PSCell.

[0426] In some sub-implementations, the UE performs beam failure detection based on the OD-SSB being transmitted within the system. In this case, the UE may perform beam failure detection based solely on the OD-SSB, or it may perform beam failure detection based on both periodic SSBs or other reference signals within the system and the OD-SSB simultaneously.

[0427] As an example, a UE can perform beam failure detection based on the OD-SSB being transmitted within the system if at least one of the following conditions is met:

[0428] 1. The cell associated with OD-SSB is PCell / PSCell. That is, beam failure detection cannot be performed on SCell based on OD-SSB. The reason is that the NW on SCell usually indicates the beam of PDCCH before scheduling data, and the QCL resource of PDCCH will not be SSB. Therefore, beam failure detection based on SSB is not considered on SCell, and therefore beam failure detection will not be performed based on OD-SSB.

[0429] 2. PDCCH and OD-SSB QCL: When PDCCH and OD-SSB are in QCL, the failure detection result of OD-SSB can be considered to reflect the beam failure status of PDCCH.

[0430] 3. The bandwidth of OD-SSB is the same as that of PDCCH / CSI-RS, or it can be stated that the bandwidth of OD-SSB can be extended in the frequency domain.

[0431] 4. The cell associated with OD-SSB has not yet configured / indicated the TCI status / QCL resources of PDCCH.

[0432] 5. The UE uses OD-SSB as the reference signal set for failure detection.

[0433] 6. The NW has not configured the number of transmissions, transmission duration, or stop time for the currently transmitted OD-SSB, or it only considers the OD-SSB deactivated when the UE receives a deactivation signaling. In this case, the OD-SSB transmission time can be considered relatively long, which can support the UE to perform beam failure detection based on the OD-SSB.

[0434] 7. The remaining number of OD-SSB transmissions / transmission duration exceeds the threshold. In this case, the OD-SSB transmission time can be considered relatively long, which supports the UE in performing beam failure detection based on OD-SSB.

[0435] In some sub-implementations, it is possible to distinguish whether the reference signal used by the UE in the failure detection reference signal set indicates an OD-SSB or a periodic SSB. One method is to indicate it using different indices. Another method is to distinguish it using different UE failure detection reference signal sets; for example, OD-SSBs are always configured in reference signal set 0, while periodic SSBs are always configured in reference signal set 1. A third method is to additionally identify whether it is an OD-SSB or a periodic SSB. A fourth method is to associate OD-SSBs and periodic SSBs with different configurations, and the difference can be distinguished from the parameters or configuration names in the configuration.

[0436] In some sub-implementations, the UE performs beam failure detection based simultaneously on the system's periodic SSB or other reference signals, and the OD-SSB. In this case, the UE determines the reporting period for the BFI to the higher layers based on the period of the OD-SSB, or based on an equivalent period. For example, when both the OD-SSB and the periodic SSB have a period of 10ms, and the transmission of these two SSBs can be equivalent to a 5ms transmission period, then 5ms is used to determine the BFI for beam failure detection. In some sub-implementations, when the OD-SSB is deactivated, the BFI counter is reset to zero.

[0437] In some sub-implementations, for each BWP of the serving cell, the UE may configure the OD-SSB using the failure detection reference signal set (failureDetectionResourcesToAddModList). In some sub-implementations, the UE evaluates radio link quality based on the OD-SSB in the failure detection reference signal set on the PCell / PSCell / SCell. In some sub-implementations, the UE evaluates radio link quality based on the OD-SSB on the PCell / PSCell / SCell and the QCL of the control channel (or the DMRS of the control channel) received by the UE. In some sub-implementations, the UE's physical layer notifies higher layers at a specific period whether a link quality below a threshold has occurred; this specific period is determined based on the minimum period of the OD-SSB and / or the periodic CSI-RS on the PCell / PSCell / SCell and the maximum period compared to 2ms. Optionally, the OD-SSB is an OD-SSB in the failure detection reference signal set.

[0438] Example 3:

[0439] In this embodiment, the OD-SSB transmission information when the UE performs beam management based on the OD-SSB demonstrates how to achieve beam management in the context of network energy saving by utilizing the faster-transmitting OD-SSB when the period of the periodic SSB is large or non-existent.

[0440] In some embodiments, during beam training, the UE requests the transmission of the OD-SSB to expedite beam training. Alternatively, the NW instructs the transmission of the OD-SSB to perform beam training.

[0441] In some embodiments, the OD-SSB transmission information is primarily pre-configured. For example, in some sub-implementations, when a UE requests an OD-SSB, only one bit of activation / deactivation information is needed; other information is not carried in the OD-SSB triggering information but is predefined by the protocol or pre-configured by the NW. This includes parameters such as the number of OD-SSB transmissions, transmission period, number of transmission periods, transmission duration, frequency domain location, time domain location, SCS, transmission power, PCI, and / or other information from the first information. In some sub-implementations, when a UE requests an OD-SSB, it also needs to indicate PCI information for the NW to determine which cell's OD-SSB the UE is specifically triggering.

[0442] In some embodiments, the UE carries OD-SSB parameter information in the OD-SSB request indication information for the NW to determine the OD-SSB transmission parameters. For example, this may include at least one of the following parameters: the number of OD-SSB transmissions, transmission period, number of transmission periods, transmission duration, frequency domain location, time domain location, SCS, transmission power, PCI, etc., and / or other information from the first information. In addition, the UE may also indicate the OD-SSB transmission window / reception window / earliest reception position / latest reception position to the NW to avoid premature or late OD-SSB transmissions, thereby achieving network energy saving.

[0443] In some embodiments, when the NW instructs or triggers the transmission of the OD-SSB, it simultaneously instructs the UE to receive some OD-SSB parameter information. This includes parameters such as the number of OD-SSB transmissions, transmission period, number of transmission periods, transmission duration, frequency domain location, time domain location, SCS, transmission power, PCI, and / or at least one of other information in the first information. In addition, the NW needs to instruct the UE to deactivate the OD-SSB. In some sub-implementations, the NW only instructs the transmission of the OD-SSB; the deactivation instruction or period change instruction is sent separately by the NW. In some sub-implementations, the OD-SSB deactivation instruction or period change instruction and the activation instruction are indicated by different indication fields of a signaling system or different frequency points of the indication field, i.e., they are incorporated into the same signaling system. In some sub-implementations, the NW instructs the number of OD-SSB transmissions, number of transmission periods, transmission duration, or stop time.

[0444] In some embodiments, the deactivation of OD-SSB can be determined based on information reported by the UE. For example, when the UE reports a candidate beam or a new beam, NW deactivates OD-SSB.

[0445] The beam management method provided in this application can be executed by a beam management device. This application uses a beam management device executing the beam management method as an example to illustrate the beam management device provided in this application.

[0446] This application provides a beam management device. As an example, the beam management device can be a communication device or a component within a communication device, such as a chip. The communication device can be a terminal, a network-side device, or a server, etc. Exemplarily, the terminal can be, but is not limited to, the type of terminal 11 listed above, and the network-side device can be, but is not limited to, the type of network-side device 12 listed above. This application does not impose specific limitations.

[0447] The beam management device includes a receiving module, a transmitting module, and a processing module. These modules can be implemented in software or hardware. When implemented in hardware, the processing module can be implemented by a processor. For example, the processor can include a general-purpose processor, a special-purpose processor, such as a Central Processing Unit (CPU), a microprocessor, a Digital Signal Processor (DSP), an Artificial Intelligence (AI) processor, a Graphics Processing Unit (GPU), an Application Specific Integrated Circuit (ASIC), a Network Processor (NP), a Field Programmable Gate Array (FPGA), or other programmable logic devices, gate circuits, transistors, discrete hardware components, etc. The receiving and transmitting modules can be implemented by a communication interface, which can include one or more of the following: transceiver, pins, circuits, buses, radio frequency units, etc.

[0448] For details, see Figure 7 When the beam management device is a terminal or a component within a terminal, the beam management device 500 includes:

[0449] Transmitting module 501 is used for beam management based on a first reference signal triggered on demand;

[0450] The beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

[0451] In some embodiments, the sending module 501 is specifically used for:

[0452] Under the condition that the first condition is met, beam recovery is performed based on the first reference signal;

[0453] The first condition includes at least one of the following:

[0454] The terminal determined that the beam failed;

[0455] The count of beam failure instances (BFI) is greater than or equal to the first threshold.

[0456] The terminal requested the first reference signal;

[0457] The cell that experienced beam failure is transmitting the first reference signal;

[0458] The reference signal set used by the terminal for beam recovery does not include the second reference signal;

[0459] The reference signal set used by the terminal for beam recovery includes a second reference signal, and the period of the second reference signal is greater than or equal to a period threshold.

[0460] The terminal was not configured with a reference signal set for beam recovery;

[0461] The reference signal set used by the terminal for beam recovery includes the first reference signal;

[0462] The terminal performed beam failure detection based on a reference signal triggered on demand.

[0463] In some embodiments, the sending module 501 is specifically used for:

[0464] If the second condition is met, beam failure detection is performed based on the first reference signal;

[0465] The second condition includes at least one of the following:

[0466] The cell associated with the first reference signal is not a secondary cell;

[0467] The cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell;

[0468] The Physical Downlink Control Channel (PDCCH) and at least one of the following quasi-co-located: the first reference signal and the second reference signal;

[0469] The first reference signal is a network-triggered reference signal;

[0470] The first reference signal is the reference signal that is being transmitted;

[0471] The bandwidth of the first reference signal is the same as the bandwidth of the physical downlink control channel (PDCCH).

[0472] The bandwidth of the first reference signal is the same as the bandwidth of the channel state information reference signal CSI-RS;

[0473] The cell associated with the first reference signal is not configured with the transmission configuration indication TCI status or quasi-co-address information for the Physical Downlink Control Channel (PDCCH);

[0474] The reference signal set used by the terminal for beam failure detection includes the first reference signal.

[0475] In some embodiments, the sending module 501 is specifically used for:

[0476] If the third condition is met, beam failure detection is performed based on the first reference signal that is being transmitted;

[0477] The third condition includes at least one of the following:

[0478] The cell associated with the first reference signal is not a secondary cell;

[0479] The cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell;

[0480] The Physical Downlink Control Channel (PDCCH) and the first reference signal are quasi-co-located;

[0481] The bandwidth of the first reference signal is the same as the bandwidth of the physical downlink control channel (PDCCH).

[0482] The bandwidth of the first reference signal is the same as the bandwidth of the channel state information reference signal CSI-RS;

[0483] The cell associated with the first reference signal is not configured with the transmission configuration indication TCI status or quasi-co-address information for the Physical Downlink Control Channel (PDCCH);

[0484] The reference signal set used by the terminal for beam failure detection includes the first reference signal;

[0485] The network has not configured or indicated at least one of the following for the first reference signal: data transmission, transmission duration, or stop time;

[0486] The first reference signal is deactivated based on deactivation signaling;

[0487] The number of times the first reference signal is transmitted is greater than the first number threshold;

[0488] The transmission duration of the first reference signal is greater than the first duration threshold;

[0489] The remaining number of transmissions of the first reference signal is greater than the second threshold;

[0490] The remaining transmission duration of the first reference signal is greater than the second duration threshold.

[0491] In some embodiments, the device 500 further includes:

[0492] The first sending module is used to send the first information;

[0493] The first information includes at least one of the following:

[0494] The index of the first reference signal;

[0495] The measurement results of the first reference signal;

[0496] Index of the second reference signal;

[0497] Measurement results of the second reference signal;

[0498] The detection result indication of beam failure detection.

[0499] In some embodiments, the first sending module is specifically used for:

[0500] If the fourth condition is met, send the first information;

[0501] The fourth condition includes at least one of the following:

[0502] The reference signal set used by the terminal for beam recovery includes the first reference signal;

[0503] The terminal requested the first reference signal;

[0504] The measurement result of the first reference signal is greater than or equal to the second threshold;

[0505] The first information includes at least one of the following:

[0506] The index of the first reference signal;

[0507] The measurement result of the first reference signal.

[0508] In some embodiments, the first sending module is specifically used for:

[0509] If the fifth condition is met, send the first message;

[0510] The fifth condition includes at least one of the following:

[0511] The reference signal set used by the terminal for beam recovery includes the second reference signal;

[0512] The reference signal set used by the terminal for beam recovery does not include the first reference signal; the first reference signal and the second reference signal are quasi-co-located (QCL).

[0513] The measurement result of the first reference signal is greater than or equal to the second threshold;

[0514] The first information includes at least one of the following:

[0515] The index of the second reference signal;

[0516] The measurement result of the second reference signal.

[0517] In some embodiments, the first sending module is specifically used for:

[0518] If the sixth condition is met, send the first message;

[0519] The sixth condition includes at least one of the following:

[0520] The reference signal set used by the terminal for beam failure detection includes the first reference signal; the terminal requests the first reference signal.

[0521] The measurement result of the first reference signal is less than or equal to the third threshold;

[0522] The terminal determined that the beam failed;

[0523] The first information includes at least one of the following:

[0524] The index of the first reference signal;

[0525] The measurement results of the first reference signal;

[0526] The detection result indication of beam failure detection.

[0527] In some embodiments, the device 500 further includes at least one of the following:

[0528] The second sending module is used to send the second information;

[0529] The first receiving module is used to receive third information;

[0530] The second information is used to request the network to send the first reference signal, and the third information is used to indicate the transmission information of the first reference signal.

[0531] In some embodiments, the second sending module is specifically used for:

[0532] If the seventh condition is met, the second information will be sent;

[0533] The seventh condition includes at least one of the following:

[0534] The terminal determined that the beam failed;

[0535] The count of beam failure instances (BFI) is greater than or equal to the first threshold.

[0536] The terminal requested the first reference signal;

[0537] The cell that experienced beam failure is transmitting the first reference signal;

[0538] The reference signal set used by the terminal for beam recovery does not include the second reference signal;

[0539] The reference signal set used by the terminal for beam recovery includes a second reference signal, and the period of the second reference signal is greater than or equal to a period threshold.

[0540] The terminal was not configured with a reference signal set for beam recovery;

[0541] The reference signal set used by the terminal for beam recovery includes the first reference signal;

[0542] The terminal performed beam failure detection based on a reference signal triggered on demand;

[0543] The terminal has available uplink authorization;

[0544] The terminal received an indication that the beam failure was determined based on the artificial intelligence (AI) unit;

[0545] The terminal receives an indication that the measurement result of beam failure detection is less than or equal to the fourth threshold.

[0546] In some embodiments, the second sending module is specifically used for:

[0547] If the eighth condition is met, the second information will be sent;

[0548] The eighth condition includes at least one of the following:

[0549] The terminal was not configured with a reference signal set for beam failure detection;

[0550] The reference signal set used by the terminal for beam failure detection includes a second reference signal, and the period of the second reference signal is greater than or equal to a period threshold.

[0551] A beam failure instance BFI count is greater than or equal to a first threshold, where the first threshold is greater than or equal to 1.

[0552] The first threshold of the beam failure instance BFI is greater than or equal to 1;

[0553] The Physical Downlink Control Channel (PDCCH) and the first reference signal are quasi-co-located;

[0554] The bandwidth of the first reference signal is the same as the bandwidth of the physical downlink control channel (PDCCH).

[0555] The bandwidth of the first reference signal is the same as the bandwidth of the channel state information reference signal CSI-RS;

[0556] The bit error rate detected by the terminal is greater than or equal to the bit error rate threshold;

[0557] The error rate detected by the terminal is greater than or equal to the error rate threshold;

[0558] The measurement result of the second reference signal is less than or equal to the fifth threshold;

[0559] The terminal receives a beam indication;

[0560] The cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell.

[0561] In some embodiments, the second sending module is specifically used for:

[0562] Send the second information on the first resource;

[0563] Wherein, the first resource satisfies at least one of the following:

[0564] Pre-configured by the network;

[0565] Instructed by the network;

[0566] Determined based on the uplink authorization available to the terminal;

[0567] Resource determination based on the terminal request.

[0568] In some embodiments, the second information or the third information includes at least one of the following:

[0569] The index of the first reference signal;

[0570] An index list, wherein the index list includes the index of the first reference signal;

[0571] Activation or deactivation information is used to indicate whether the first reference signal is activated or deactivated;

[0572] The cell or cell group information associated with the first reference signal;

[0573] The first reference signal is associated with at least one of the following: measurement object MO, measurement ID, reporting configuration ID, synchronization signal and / or physical broadcast channel block measurement timing configuration SMTC;

[0574] Frequency domain information of the first reference signal;

[0575] The type of the first reference signal;

[0576] The physical cell identifier (PCI) or PCI group information associated with the first reference signal;

[0577] The quasi-co-address QCL information of the first reference signal;

[0578] The time-domain plot of the first reference signal;

[0579] Instructions to repeatedly transmit the first reference signal;

[0580] Instructions for transmitting the first reference signal via beam scanning;

[0581] The time offset for sending or receiving the first reference signal;

[0582] The subcarrier spacing SCS of the first reference signal.

[0583] In some embodiments, the second information or the third information is indicated at at least one of the following granularities: serving cell, serving cell group, frequency point, frequency point group, physical cell identifier (PCI), PCI group, measurement object, measurement object group, beam, beam group.

[0584] See Figure 8 When the beam management device is a network-side device or a component within a network-side device, the beam management device 600 includes:

[0585] The first transmitting module 601 is used to transmit a first reference signal that is triggered on demand.

[0586] The first reference signal is used by the terminal for beam management, and the beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

[0587] In some embodiments, the device 600 further includes:

[0588] The first receiving module is used to receive the first information;

[0589] The first information includes at least one of the following:

[0590] The index of the first reference signal;

[0591] The measurement results of the first reference signal;

[0592] Index of the second reference signal;

[0593] Measurement results of the second reference signal;

[0594] The detection result indication of beam failure detection.

[0595] In some embodiments, the device 600 further includes at least one of the following:

[0596] The second receiving module is used to receive the second information;

[0597] The second sending module is used to send the third information;

[0598] The second information is used to request the network to send the first reference signal, and the third information is used to indicate the transmission information of the first reference signal.

[0599] In some embodiments, the second receiving module is specifically used for:

[0600] Receive the second information on the first resource;

[0601] Wherein, the first resource satisfies at least one of the following:

[0602] Pre-configured by the network;

[0603] Instructed by the network;

[0604] Determined based on the uplink authorization available to the terminal;

[0605] Resource determination based on the terminal request.

[0606] In some embodiments, the second information or the third information includes at least one of the following:

[0607] The index of the first reference signal;

[0608] An index list, wherein the index list includes the index of the first reference signal;

[0609] Activation or deactivation information is used to indicate whether the first reference signal is activated or deactivated;

[0610] The cell or cell group information associated with the first reference signal;

[0611] The first reference signal is associated with at least one of the following: measurement object MO, measurement ID, reporting configuration ID, synchronization signal and / or physical broadcast channel block measurement timing configuration SMTC;

[0612] Frequency domain information of the first reference signal;

[0613] The type of the first reference signal;

[0614] The physical cell identifier (PCI) or PCI group information associated with the first reference signal;

[0615] The quasi-co-address QCL information of the first reference signal;

[0616] The time-domain plot of the first reference signal;

[0617] Instructions to repeatedly transmit the first reference signal;

[0618] Instructions for transmitting the first reference signal via beam scanning;

[0619] The time offset for sending or receiving the first reference signal;

[0620] The subcarrier spacing SCS of the first reference signal.

[0621] In some embodiments, the second information or the third information is indicated at at least one of the following granularities: serving cell, serving cell group, frequency point, frequency point group, physical cell identifier (PCI), PCI group, measurement object, measurement object group, beam, beam group.

[0622] The apparatus provided in this application embodiment can achieve... Figures 4 to 6 The various processes implemented in the method embodiments achieve the same technical effect, and will not be described again here to avoid repetition.

[0623] like Figure 9 As shown in the illustration, this application also provides a communication device 700, including a processor 701 and a memory 702. The memory 702 stores programs or instructions that can run on the processor 701. For example, when the communication device 700 is a terminal, the program or instructions executed by the processor 701 implement the various steps of the above-described beam management method embodiments and achieve the same technical effect. When the communication device 700 is a network-side device, the program or instructions executed by the processor 701 implement the various steps of the above-described beam management method embodiments and achieve the same technical effect. To avoid repetition, further details are omitted here.

[0624] This application embodiment also provides a terminal, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figures 4 to 6 The steps in the method embodiment shown are illustrated. This terminal embodiment corresponds to the above-described terminal-side method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this terminal embodiment and achieve the same technical effect. The terminal can be... Figure 7 The beam management device shown. Specifically, Figure 10A schematic diagram of the hardware structure of a terminal to implement an embodiment of this application.

[0625] The terminal 800 includes, but is not limited to, at least some of the following components: radio frequency unit 801, network module 802, audio output unit 803, input unit 804, sensor 805, display unit 806, user input unit 807, interface unit 808, memory 809, and processor 810.

[0626] Those skilled in the art will understand that the terminal 800 may also include a power supply (such as a battery) for supplying power to various components. The power supply may be logically connected to the processor 810 through a power management system, thereby enabling functions such as managing charging, discharging, and power consumption through the power management system. Figure 10 The terminal structure shown does not constitute a limitation on the terminal. The terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements, which will not be elaborated here.

[0627] It should be understood that, in this embodiment, the input unit 804 may include a graphics processor 8041 and a microphone 8042. The graphics processor 8041 processes image data of still images or videos obtained by an image capture device (such as a camera) in video capture mode or image capture mode. The display unit 806 may include a display panel 8061, which may be configured in the form of a liquid crystal display, an organic light-emitting diode, or the like. The user input unit 807 includes at least one of a touch panel 8071 and other input devices 8072. The touch panel 8071 is also called a touch screen. The touch panel 8071 may include two parts: a touch detection device and a touch controller. Other input devices 8072 may include, but are not limited to, physical keyboards, function keys (such as volume control buttons, power buttons, etc.), trackballs, mice, and joysticks, which will not be described in detail here.

[0628] In this embodiment, after receiving downlink data from the network-side device, the radio frequency unit 801 can transmit it to the processor 810 for processing; in addition, the radio frequency unit 801 can send uplink data to the network-side device. Typically, the radio frequency unit 801 includes, but is not limited to, antennas, amplifiers, transceivers, couplers, low-noise amplifiers, duplexers, etc.

[0629] The memory 809 can be used to store software programs or instructions, as well as various data. The memory 809 may primarily include a first storage area for storing programs or instructions and a second storage area for storing data. The first storage area may store the operating system, application programs or instructions required for at least one function (such as sound playback, image playback, etc.). Furthermore, the memory 809 may include volatile memory or non-volatile memory. The non-volatile memory may be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus RAM (DRRAM). The memory 809 in the embodiments of this application includes, but is not limited to, these and any other suitable types of memory.

[0630] Processor 810 may include one or more processing units; optionally, processor 810 integrates an application processor and a modem processor, wherein the application processor mainly handles operations involving the operating system, user interface, and applications, and the modem processor mainly handles wireless communication signals, such as a baseband processor. It is understood that the aforementioned modem processor may also not be integrated into processor 810.

[0631] The processor 810 is configured to perform beam management based on a first reference signal triggered on demand; wherein the beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

[0632] In this embodiment, the terminal performs beam management based on a first reference signal triggered on demand, which can ensure the performance of beam management while saving network energy.

[0633] It is understood that the implementation process of each implementation method mentioned in this embodiment can refer to the relevant description of method embodiment 200 and achieve the same or corresponding technical effects. To avoid repetition, it will not be described again here.

[0634] This application embodiment also provides a network-side device, including a processor and a communication interface, wherein the communication interface is coupled to the processor, and the processor is used to run programs or instructions to implement, for example... Figure 4 The steps of the method embodiment shown are illustrated. This network-side device embodiment corresponds to the above-described network-side device method embodiment. All implementation processes and methods of the above-described method embodiments can be applied to this network-side device embodiment and can achieve the same technical effect.

[0635] Specifically, embodiments of this application also provide a network-side device, which can be... Figure 8 The beam management device shown. Figure 11 As shown, the network-side device 900 includes: an antenna 91, a radio frequency (RF) device 92, a baseband device 93, a processor 94, and a memory 95. The antenna 91 is connected to the RF device 92. In the uplink direction, the RF device 92 receives information through the antenna 91 and transmits the received information to the baseband device 93 for processing. In the downlink direction, the baseband device 93 processes the information to be transmitted and sends it to the RF device 92. The RF device 92 processes the received information and transmits it through the antenna 91.

[0636] The method executed by the network-side device in the above embodiments can be implemented in the baseband device 93, which includes a baseband processor.

[0637] Baseband device 93 may include, for example, at least one baseband board on which multiple chips are disposed, such as Figure 11 As shown, one of the chips is, for example, a baseband processor, which is connected to the memory 95 via a bus interface to call the program or instructions in the memory 95 to execute the network-side device operations shown in the above method embodiments.

[0638] The network-side device may also include a network interface 96, such as a Common Public Radio Interface (CPRI).

[0639] The processor 94 is used to send a first reference signal that is triggered on demand; wherein the first reference signal is used by the terminal to perform beam management, and the beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

[0640] In this embodiment, the network-side device sends a first reference signal triggered on demand, enabling the terminal to perform beam management based on the first reference signal triggered on demand, thus ensuring beam management performance while saving network energy.

[0641] Furthermore, the network-side device 900 in this embodiment of the application also includes: a program or instructions stored in a memory 95 and executable on a processor 94, wherein the processor 94 calls the program or instructions in the memory 95 to execute. Figure 8 The methods executed by each module shown achieve the same technical effect, and to avoid repetition, they will not be described in detail here.

[0642] This application also provides a readable storage medium storing a program or instructions. When the program or instructions are executed by a processor, they implement the various processes of the above-described beam management method embodiments and achieve the same technical effect. To avoid repetition, they will not be described again here.

[0643] The processor mentioned above is either the processor in the terminal described in the above embodiments or the processor in the network-side device. The readable storage medium includes computer-readable storage media, such as computer read-only memory (ROM), random access memory (RAM), magnetic disk, or optical disk. In some examples, the readable storage medium may be a non-transient readable storage medium.

[0644] This application embodiment also provides a chip, which includes a processor and a communication interface. The communication interface is coupled to the processor. The processor is used to run programs or instructions to implement the various processes of the above-described beam management method embodiments and achieve the same technical effect. To avoid repetition, it will not be described again here.

[0645] It should be understood that the chip mentioned in the embodiments of this application may also be referred to as a system-on-a-chip, system chip, chip system, or system-on-a-chip, etc.

[0646] This application also provides a computer program / program product, which is stored in a storage medium and executed by at least one processor to implement the various processes of the above-described beam management method embodiments, and can achieve the same technical effect. To avoid repetition, it will not be described again here.

[0647] This application also provides a beam management system, including: a terminal and a network-side device, wherein the terminal can be used to perform the steps of the beam management method described above, and the network-side device can be used to perform the steps of the beam management method described above.

[0648] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, it should be noted that the scope of the methods and apparatuses in the embodiments of this application is not limited to performing functions in the order shown or discussed, but may also include performing functions substantially simultaneously or in the reverse order, depending on the functions involved. For example, the described methods may be performed in a different order than described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

[0649] From the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of computer software products plus necessary general-purpose hardware platforms, and of course, they can also be implemented by hardware. The computer software product is stored in a storage medium (such as ROM, RAM, magnetic disk, optical disk, etc.), and the computer software product includes several instructions to cause the terminal or network-side device to execute the methods described in the various embodiments of this application.

[0650] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other implementations under the guidance of this application without departing from the spirit and scope of the claims. All of these implementations are within the protection scope of this application.

Claims

1. A beam management method, characterized in that, include: The terminal performs beam management based on a first reference signal triggered on demand. The beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

2. The method according to claim 1, characterized in that, The terminal performs beam management based on a first reference signal triggered on demand, including: If the first condition is met, the terminal performs beam recovery based on the first reference signal; The first condition includes at least one of the following: The terminal determined that the beam failed; The count of beam failure instances (BFI) is greater than or equal to the first threshold. The terminal requested the first reference signal; The cell that experienced beam failure is transmitting the first reference signal; The reference signal set used by the terminal for beam recovery does not include the second reference signal; The reference signal set used by the terminal for beam recovery includes a second reference signal, and the period of the second reference signal is greater than or equal to a period threshold. The terminal was not configured with a reference signal set for beam recovery; The reference signal set used by the terminal for beam recovery includes the first reference signal; The terminal performed beam failure detection based on a reference signal triggered on demand.

3. The method according to claim 1 or 2, characterized in that, The terminal performs beam management based on a first reference signal triggered on demand, including: If the second condition is met, the terminal performs beam failure detection based on the first reference signal; The second condition includes at least one of the following: The cell associated with the first reference signal is not a secondary cell; The cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell; The Physical Downlink Control Channel (PDCCH) and at least one of the following quasi-co-located: the first reference signal and the second reference signal; The first reference signal is a network-triggered reference signal; The first reference signal is the reference signal that is being transmitted; The bandwidth of the first reference signal is the same as the bandwidth of the physical downlink control channel (PDCCH). The bandwidth of the first reference signal is the same as the bandwidth of the channel state information reference signal CSI-RS; The cell associated with the first reference signal is not configured with the transmission configuration indication TCI status or quasi-co-address information for the Physical Downlink Control Channel (PDCCH); The reference signal set used by the terminal for beam failure detection includes the first reference signal.

4. The method according to claim 3, characterized in that, The terminal performs beam failure detection based on the first reference signal, including: If the third condition is met, the terminal performs beam failure detection based on the first reference signal being transmitted. The third condition includes at least one of the following: The cell associated with the first reference signal is not a secondary cell; The cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell; The Physical Downlink Control Channel (PDCCH) and the first reference signal are quasi-co-located; The bandwidth of the first reference signal is the same as the bandwidth of the physical downlink control channel (PDCCH). The bandwidth of the first reference signal is the same as the bandwidth of the channel state information reference signal CSI-RS; The cell associated with the first reference signal is not configured with the transmission configuration indication TCI status or quasi-co-address information for the Physical Downlink Control Channel (PDCCH); The reference signal set used by the terminal for beam failure detection includes the first reference signal; The network has not configured or indicated at least one of the following for the first reference signal: data transmission, transmission duration, or stop time; The first reference signal is deactivated based on deactivation signaling; The number of times the first reference signal is transmitted is greater than the first number threshold; The transmission duration of the first reference signal is greater than the first duration threshold; The remaining number of transmissions of the first reference signal is greater than the second threshold; The remaining transmission duration of the first reference signal is greater than the second duration threshold.

5. The method according to any one of claims 1 to 4, characterized in that, The method further includes: The terminal sends the first information; The first information includes at least one of the following: The index of the first reference signal; The measurement results of the first reference signal; Index of the second reference signal; Measurement results of the second reference signal; Indication of beam failure detection results.

6. The method according to claim 5, characterized in that, The terminal sends first information, including: If the fourth condition is met, the terminal sends the first information; The fourth condition includes at least one of the following: The reference signal set used by the terminal for beam recovery includes the first reference signal; The terminal requested the first reference signal; The measurement result of the first reference signal is greater than or equal to the second threshold; The first information includes at least one of the following: The index of the first reference signal; The measurement result of the first reference signal.

7. The method according to claim 5, characterized in that, The terminal sends first information, including: If the fifth condition is met, the terminal sends the first information; The fifth condition includes at least one of the following: The reference signal set used by the terminal for beam recovery includes the second reference signal; The reference signal set used by the terminal for beam recovery does not include the first reference signal; The first reference signal and the second reference signal are quasi-co-addressable in a QCL. The measurement result of the first reference signal is greater than or equal to the second threshold; The first information includes at least one of the following: The index of the second reference signal; The measurement result of the second reference signal.

8. The method according to claim 5, characterized in that, The terminal sends first information, including: If the sixth condition is met, the terminal sends the first information; The sixth condition includes at least one of the following: The reference signal set used by the terminal for beam failure detection includes the first reference signal; The terminal requested the first reference signal; The measurement result of the first reference signal is less than or equal to the third threshold; The terminal determined that the beam failed; The first information includes at least one of the following: The index of the first reference signal; The measurement results of the first reference signal; Indication of beam failure detection results.

9. The method according to any one of claims 1 to 8, characterized in that, The method further includes at least one of the following: The terminal sends the second information; The terminal receives third information; The second information is used to request the network to send the first reference signal, and the third information is used to indicate the transmission information of the first reference signal.

10. The method according to claim 9, characterized in that, The terminal sends a second message, including: If the seventh condition is met, the terminal sends the second information; The seventh condition includes at least one of the following: The terminal determined that the beam failed; The count of beam failure instances (BFI) is greater than or equal to the first threshold. The terminal requested the first reference signal; The cell that experienced beam failure is transmitting the first reference signal; The reference signal set used by the terminal for beam recovery does not include the second reference signal; The reference signal set used by the terminal for beam recovery includes a second reference signal, and the period of the second reference signal is greater than or equal to a period threshold. The terminal was not configured with a reference signal set for beam recovery; The reference signal set used by the terminal for beam recovery includes the first reference signal; The terminal performed beam failure detection based on a reference signal triggered on demand; The terminal has available uplink authorization; The terminal received an indication that the beam failure was determined based on the artificial intelligence (AI) unit; The terminal receives an indication that the measurement result of beam failure detection is less than or equal to the fourth threshold.

11. The method according to claim 9, characterized in that, The terminal sends a second message, including: If the eighth condition is met, the terminal sends the second information; The eighth condition includes at least one of the following: The terminal was not configured with a reference signal set for beam failure detection; The reference signal set used by the terminal for beam failure detection includes a second reference signal, and the period of the second reference signal is greater than or equal to a period threshold. A beam failure instance BFI count is greater than or equal to a first threshold, where the first threshold is greater than or equal to 1. The first threshold of the beam failure instance BFI is greater than or equal to 1; The Physical Downlink Control Channel (PDCCH) and the first reference signal are quasi-co-located; The bandwidth of the first reference signal is the same as the bandwidth of the physical downlink control channel (PDCCH). The bandwidth of the first reference signal is the same as the bandwidth of the channel state information reference signal CSI-RS; The bit error rate detected by the terminal is greater than or equal to the bit error rate threshold; The error rate detected by the terminal is greater than or equal to the error rate threshold; The measurement result of the second reference signal is less than or equal to the fifth threshold; The terminal receives a beam indication; The cell associated with the first reference signal is a primary cell, a primary-secondary cell, or a special cell.

12. The method according to any one of claims 9 to 11, characterized in that, The terminal sends a second message, including: The terminal sends the second information on the first resource; Wherein, the first resource satisfies at least one of the following: Pre-configured by the network; Instructed by the network; Determined based on the uplink authorization available to the terminal; Resource determination based on the terminal request.

13. The method according to any one of claims 9 to 12, characterized in that, The second information or the third information includes at least one of the following: The index of the first reference signal; An index list, wherein the index list includes the index of the first reference signal; Activation or deactivation information is used to indicate whether the first reference signal is activated or deactivated; The cell or cell group information associated with the first reference signal; The first reference signal is associated with at least one of the following: measurement object MO, measurement ID, reporting configuration ID, synchronization signal and / or physical broadcast channel block measurement timing configuration SMTC; Frequency domain information of the first reference signal; The type of the first reference signal; The physical cell identifier (PCI) or PCI group information associated with the first reference signal; The quasi-co-address QCL information of the first reference signal; The time-domain plot of the first reference signal; Instructions to repeatedly transmit the first reference signal; Instructions for transmitting the first reference signal via beam scanning; The time offset for sending or receiving the first reference signal; The subcarrier spacing SCS of the first reference signal.

14. The method according to any one of claims 9 to 13, characterized in that, The second information or the third information is indicated at at least one of the following granularities: serving cell, serving cell group, frequency point, frequency point group, physical cell identifier (PCI), PCI group, measurement object, measurement object group, beam, beam group.

15. A beam management method, characterized in that, include: The network-side device sends a first reference signal that is triggered on demand. The first reference signal is used by the terminal for beam management, and the beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

16. The method according to claim 15, characterized in that, The method further includes: The network-side device receives the first information; The first information includes at least one of the following: The index of the first reference signal; The measurement results of the first reference signal; Index of the second reference signal; Measurement results of the second reference signal; Indication of beam failure detection results.

17. The method according to claim 15 or 16, characterized in that, The method further includes at least one of the following: The network-side device receives the second information; The network-side device sends third information; The second information is used to request the network to send the first reference signal, and the third information is used to indicate the transmission information of the first reference signal.

18. The method according to claim 17, characterized in that, The network-side device receives the second information, including: The network-side device receives the second information on the first resource; Wherein, the first resource satisfies at least one of the following: Pre-configured by the network; Instructed by the network; Determined based on the uplink authorization available to the terminal; Resource determination based on the terminal request.

19. The method according to claim 17 or 18, characterized in that, The second information or the third information includes at least one of the following: The index of the first reference signal; An index list, wherein the index list includes the index of the first reference signal; Activation or deactivation information is used to indicate whether the first reference signal is activated or deactivated; The cell or cell group information associated with the first reference signal; The first reference signal is associated with at least one of the following: measurement object MO, measurement ID, reporting configuration ID, synchronization signal and / or physical broadcast channel block measurement timing configuration SMTC; Frequency domain information of the first reference signal; The type of the first reference signal; The physical cell identifier (PCI) or PCI group information associated with the first reference signal; The quasi-co-address QCL information of the first reference signal; The time-domain plot of the first reference signal; Instructions to repeatedly transmit the first reference signal; Instructions for transmitting the first reference signal via beam scanning; The time offset for sending or receiving the first reference signal; The subcarrier spacing SCS of the first reference signal.

20. The method according to any one of claims 17 to 19, characterized in that, The second information or the third information is indicated at at least one of the following granularities: serving cell, serving cell group, frequency point, frequency point group, physical cell identifier (PCI), PCI group, measurement object, measurement object group, beam, beam group.

21. A beam management device, characterized in that, include: The processing module is used for beam management based on the first reference signal triggered on demand; The beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

22. The apparatus according to claim 21, characterized in that, The device further includes: The first sending module is used to send the first information; The first information includes at least one of the following: The index of the first reference signal; The measurement results of the first reference signal; Index of the second reference signal; Measurement results of the second reference signal; Indication of beam failure detection results.

23. The apparatus according to claim 21 or 22, characterized in that, The device further includes at least one of the following: The second sending module is used to send the second information; The first receiving module is used to receive third information; The second information is used to request the network to send the first reference signal, and the third information is used to indicate the transmission information of the first reference signal.

24. A beam management device, characterized in that, include: The first transmitting module is used to transmit the first reference signal that is triggered on demand. The first reference signal is used by the terminal for beam management, and the beam management includes at least one of the following: beam recovery, beam failure detection, beam training, and beam pairing.

25. The apparatus according to claim 24, characterized in that, The device further includes: The first receiving module is used to receive the first information; The first information includes at least one of the following: The index of the first reference signal; The measurement results of the first reference signal; Index of the second reference signal; Measurement results of the second reference signal; Indication of beam failure detection results.

26. The apparatus according to claim 24 or 25, characterized in that, The device further includes at least one of the following: The second receiving module is used to receive the second information; The second sending module is used to send the third information; The second information is used to request the network to send the first reference signal, and the third information is used to indicate the transmission information of the first reference signal.

27. A terminal, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the beam management method as described in any one of claims 1 to 14.

28. A network-side device, characterized in that, It includes a processor and a memory, the memory storing a program or instructions that can run on the processor, the program or instructions being executed by the processor to implement the steps of the beam management method as described in any one of claims 15 to 20.

29. A readable storage medium, characterized in that, The readable storage medium stores a program or instructions that, when executed by a processor, implement the steps of the beam management method as described in any one of claims 1 to 14, or implement the steps of the beam management method as described in any one of claims 15 to 20.

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