CN116248238A

CN116248238A - Method, device, terminal and network side equipment for detecting and configuring reference signals

Info

Publication number: CN116248238A
Application number: CN202111493468.5A
Authority: CN
Inventors: 洪琪; 王臣玺; 李�根
Original assignee: Vivo Mobile Communication Co Ltd
Current assignee: Vivo Mobile Communication Co Ltd
Priority date: 2021-12-08
Filing date: 2021-12-08
Publication date: 2023-06-09
Also published as: WO2023104106A1

Abstract

The application discloses a method, a device, a terminal and network side equipment for detecting and configuring a reference signal, which belong to the technical field of communication, and the method for detecting the reference signal in the embodiment of the application comprises the following steps: the terminal receives an indication signaling, wherein the indication signaling carries first identification information and/or second identification information, the first identification information is used for identifying a transmission configuration indication TCI state pool/group, and the second identification information is used for identifying a target TCI state in the TCI state pool/group; and the terminal detects a target reference signal according to the first identification information and/or the second identification information.

Description

Method, device, terminal and network side equipment for detecting and configuring reference signals

Technical Field

The application belongs to the technical field of communication, and particularly relates to a method, a device, a terminal and network side equipment for detecting and configuring a reference signal.

Background

The beam forming technology can be used for strengthening the high-frequency signal so as to improve the coverage range of the high-frequency band. As wireless communication technology advances, narrower beams (beams) are used to compensate for the loss due to path loss (path loss), and thus the number of total beams increases dramatically.

In the related art, the reference signals except for the reference signals transmitted on the synchronization signal (Synchronization Signal, SS)/physical broadcast channel (Physical broadcast channel, PBCH) need to be indicated by the valid transmission configuration indication (Transmission Configuration Indicator, TCI) state (state), so when the number of beams increases sharply, the probability of the network side device re-configuring the TCI state increases, and in the related art, the network side device re-configures the TCI state through the radio resource control (Radio Resource Control, RRC) signal, and the time delay of the RRC re-configuration process is long.

Meanwhile, with the introduction of a larger subcarrier spacing (SCS), the time per slot (slot) becomes very short. At this time, the delay caused by RRC reconfiguration has a great influence on the communication system.

As can be seen from the above, in the related art, in the RRC reconfiguration process for the TCI state, there is a problem that the communication performance of the communication system is reduced due to longer delay.

Disclosure of Invention

The embodiment of the application provides a method, a device, a terminal and network side equipment for detecting and configuring a reference signal, which can solve the problems that in the process of reconfiguration of TCI state in the configuration in the related technology, the time delay is long, and the communication performance of a communication system is further reduced.

In a first aspect, a method of detecting a reference signal is provided, the method comprising:

the terminal receives an indication signaling, wherein the indication signaling carries first identification information and/or second identification information, the first identification information is used for identifying a transmission configuration indication TCI state pool/group, and the second identification information is used for identifying a target TCI state in the TCI state pool/group;

and the terminal detects a target reference signal according to the first identification information and/or the second identification information.

In a second aspect, an apparatus for detecting a reference signal is provided, which is applied to a terminal, and the apparatus includes:

the first receiving module is used for receiving an indication signaling, wherein the indication signaling carries first identification information and/or second identification information, the first identification information is used for identifying a transmission configuration indication TCI state pool/group, and the second identification information is used for identifying a target TCI state in the TCI state pool/group;

and the first detection module is used for detecting the target reference signal according to the first identification information and/or the second identification information.

In a third aspect, a method of configuring a reference signal is provided, the method comprising:

the network side equipment determines N TCI state pools/groups according to M transmission configuration indication TCI states, wherein N is an integer greater than or equal to 1, and M is an integer greater than N;

The network side equipment sends an indication signaling, wherein the indication signaling carries first identification information and/or second identification information, the first identification information is used for identifying a TCI state pool/group, and the second identification information is used for identifying a target TCI state in the TCI state pool/group.

In a fourth aspect, an apparatus for configuring a reference signal is provided, where the apparatus is applied to a network side device, and the apparatus includes:

the determining module is used for determining N TCI state pools/groups according to M transmission configuration indication TCI states, wherein N is an integer greater than or equal to 1, and M is an integer greater than N;

the third sending module is used for sending an indication signaling, wherein the indication signaling carries first identification information and/or second identification information, the first identification information is used for identifying a TCI state pool/group, and the second identification information is used for identifying a target TCI state in the TCI state pool/group.

In a fifth aspect, there is provided a terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method as described in the first aspect.

A sixth aspect provides a terminal, including a processor and a communication interface, where the communication interface is configured to receive an indication signaling, where the indication signaling carries first identification information and/or second identification information, where the first identification information is configured to identify a transmission configuration indication TCI state pool/group, and the second identification information is configured to identify a target TCI state in the TCI state pool/group; the communication interface is further used for detecting a target reference signal according to the first identification information and/or the second identification information.

In a seventh aspect, a network side device is provided, comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method according to the third aspect.

An eighth aspect provides a network side device, including a processor and a communication interface, where the processor is configured to determine N TCI status pools/groups according to M transmission configuration indication TCI statuses, N is an integer greater than or equal to 1, and M is an integer greater than N; the communication interface is configured to send an indication signaling, where the indication signaling carries first identification information and/or second identification information, where the first identification information is used to identify a TCI state pool/group, and the second identification information is used to identify a target TCI state in the TCI state pool/group.

In a ninth aspect, there is provided a communication system comprising: a terminal operable to perform the steps of the method of detecting a reference signal as described in the first aspect, and a network side device operable to perform the steps of the method of configuring a reference signal as described in the third aspect.

In a tenth aspect, there is provided a readable storage medium having stored thereon a program or instructions which when executed by a processor, performs the steps of the method according to the first aspect, or performs the steps of the method according to the third aspect.

In an eleventh aspect, there is provided a chip comprising a processor and a communication interface, the communication interface and the processor being coupled, the processor being for running a program or instructions to implement the method according to the first aspect or to implement the method according to the third aspect.

In a twelfth aspect, there is provided a computer program/program product stored in a storage medium, the computer program/program product being executed by at least one processor to implement the steps of the method of detecting a reference signal as described in the first aspect, or to implement the steps of the method of configuring a reference signal as described in the third aspect.

In the embodiment of the application, a terminal receives an indication signaling, wherein the indication signaling carries first identification information and/or second identification information, the first identification information is used for identifying a transmission configuration indication TCI state pool/group, and the second identification information is used for identifying a target TCI state in the TCI state pool/group; and the terminal detects a target reference signal according to the first identification information and/or the second identification information. In this way, the terminal can detect the reference signal corresponding to the designated TCI state and/or the reference signal corresponding to the TCI state in the designated TCI state pool/group according to the received indication signaling, so that the indication signaling can be adopted to implement reconfiguration of the TCI state pool/group or the TCI state, and compared with RRC reconfiguration in the related art, the time delay is shorter, so that the communication performance of the communication system can be improved.

Drawings

Fig. 1 is a block diagram of a wireless communication system to which embodiments of the present application can be applied;

FIG. 2 is a schematic diagram of the transmission process of SSB signals;

fig. 3 is a schematic diagram of a downlink beam selection and determination process;

FIG. 4 is a schematic diagram of a beam failure detection process;

fig. 5 is a flowchart of a method for detecting a reference signal according to an embodiment of the present application;

FIG. 6 is a schematic diagram of a TCI status pool/group in a method for detecting reference signals according to an embodiment of the present application;

FIG. 7 is an application scenario diagram of a first embodiment of the present application;

fig. 8 is an application scenario diagram of a second embodiment of the present application;

fig. 9 is a flowchart of a method for configuring a reference signal according to an embodiment of the present application.

Fig. 10 is a schematic structural diagram of an apparatus for detecting a reference signal according to an embodiment of the present application;

fig. 11 is a schematic structural diagram of an apparatus for configuring a reference signal according to an embodiment of the present application;

fig. 12 is a schematic structural diagram of a communication device according to an embodiment of the present application;

fig. 13 is a schematic structural diagram of a terminal according to an embodiment of the present application;

fig. 14 is a schematic structural diagram of a network side device according to an embodiment of the present application.

Detailed Description

Technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments in the present application are within the scope of the protection of the present application.

The terms first, second and the like in the description and in the claims, are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the terms so used are interchangeable under appropriate circumstances such that the embodiments of the application are capable of operation in sequences other than those illustrated or otherwise described herein, and that the terms "first" and "second" are generally intended to be used in a generic sense and not to limit the number of objects, for example, the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/" generally means a relationship in which the associated object is an "or" before and after.

It is noted that the techniques described in the embodiments of the present application are not limited to long term evolution (Long Term Evolution, LTE)/LTE-Advanced (LTE-a) systems, but may also be used in other wireless communication systems, such as code division multiple access (Code Division Multiple Access, CDMA), time division multiple access (Time Division Multiple Access, TDMA), frequency division multiple access (Frequency division multiple access)ion Multiple Access, FDMA), orthogonal frequency division multiple access (Orthogonal Frequency Division Multiple Access, OFDMA), single carrier frequency division multiple access (SC-carrier Frequency Division Multiple Access, SC-FDMA), and other systems. The terms "system" and "network" in embodiments of the present application are often used interchangeably, and the techniques described may be used for both the above-mentioned systems and radio technologies, as well as other systems and radio technologies. The following description describes a New air interface (NR) system for purposes of example and uses NR terminology in much of the description that follows, but these techniques are also applicable to applications other than NR system applications, such as generation 6 (6) ^th Generation, 6G) communication system.

Fig. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable. The wireless communication system includes a terminal 11 and a network device 12. The terminal 11 may be a mobile phone, a tablet (Tablet Personal Computer), a Laptop (Laptop Computer) or a terminal-side Device called a notebook, a personal digital assistant (Personal Digital Assistant, PDA), a palm top, a netbook, an ultra-mobile personal Computer (ultra-mobile personal Computer, UMPC), a mobile internet appliance (Mobile Internet Device, MID), an augmented reality (augmented reality, AR)/Virtual Reality (VR) Device, a robot, a Wearable Device (weather Device), a vehicle-mounted Device (VUE), a pedestrian terminal (PUE), a smart home (home Device with a wireless communication function, such as a refrigerator, a television, a washing machine, or a furniture), a game machine, a personal Computer (personal Computer, PC), a teller machine, or a self-service machine, and the Wearable Device includes: intelligent wrist-watch, intelligent bracelet, intelligent earphone, intelligent glasses, intelligent ornament (intelligent bracelet, intelligent ring, intelligent necklace, intelligent anklet, intelligent foot chain etc.), intelligent wrist strap, intelligent clothing etc.. Note that, the specific type of the terminal 11 is not limited in the embodiment of the present application. The network-side device 12 may comprise an access network device or a core network device, wherein the access network device 12 may also be referred to as a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network element. Access network device 12 may include a base station, a WLAN access point, a WiFi node, or the like, which may be referred to as a node B, an evolved node B (eNB), an access point, a base transceiver station (Base Transceiver Station, BTS), a radio base station, a radio transceiver, a basic service set (Basic Service Set, BSS), an extended service set (Extended Service Set, ESS), a home node B, a home evolved node B, a transmission and reception point (Transmitting Receiving Point, TRP), or some other suitable terminology in the art, and the base station is not limited to a particular technical vocabulary so long as the same technical effect is achieved, and it should be noted that in the embodiments of the present application, only a base station in an NR system is described as an example, and the specific type of the base station is not limited.

Because of the lack of low frequency resources, 5G NR uses a high frequency band such as millimeter wave, and because propagation loss of the high frequency band is greater than that of the low frequency band, its coverage distance is inferior to that of LTE. In order to solve the problem, one solution is that 5G implements enhancement of signals by a multi-antenna Beam Forming (Beam Forming) manner, and further implements enhancement of coverage.

Beamforming is a signal processing technique that uses an array of sensors to directionally transmit and receive signals. The beam forming technology enables signals of certain angles to obtain constructive interference and signals of other angles to obtain destructive interference by adjusting parameters of basic units of the phased array, and then the antenna beam is directed in a specific direction. The establishment of the downlink beam is generally determined by a synchronization Signal/physical broadcast channel Signal block (or synchronization Signal block) (Synchronization Signal and PBCH block, SSB) and a channel state information (Channel State Information, CSI) Reference Signal (RS).

Taking SSB as an example: due to the narrow beam, the same SSB is transmitted in NR in a time division multiplexed (Time Division Duplex, TDD) manner to different directions by means of the beam, so that the SSB can be received by User Equipment (UE) in each direction. For example: as shown in fig. 2, in the 5ms time domain, the base station transmits a plurality of SSBs, each having a respective SSB identity (Index), to cover different directions, respectively. Correspondingly, the UE receives a plurality of SSB with different signal strengths and selects one SSB wave beam with the strongest signal strength as the own SSB wave beam. The NR random access procedure uses beams, where SSBs have multiple transmission opportunities in a time domain period and have corresponding numbers, which may correspond to different beams, respectively, and for UEs, the UEs have an opportunity to transmit a preamble (preamble) only when a beam scanning signal of the SSB is covered to the UEs. When the network side receives the preamble of the UE, it knows the downlink best beam, so the SSB needs to have an association with the preamble, and the preamble can only be sent when the physical random access channel (Physical Random Access Channel, PRACH) is configured (i.e. PRACH occiping), that is, the SSB is associated with the PRACH occiping.

Furthermore, when the base station performs downlink communication with the UE, downlink beam selection and determination are involved, and as shown in fig. 3, the downlink beam selection and determination specifically includes the following 3 steps:

step 1, a base station transmitting end (Tx) performs beam scanning in a manner of transmitting SSB signals (wherein one SSB signal corresponds to one Tx wide beam (wide beam)), a base station side and a UE side respectively traverse each beam, and the UE side needs to find a suitable receiving (Rx) beam for each SSB signal (because SSBs are top layers of Quasi co-location (QCL), it needs to ensure that each SSB corresponds to a suitable Rx beam);

step 2.Tx performs beam refinement scanning in a manner of transmitting CSI-RS (which may be periodic, semi-persistent or aperiodic) or SSB (which may only be periodic) signals within the Tx wide beam (wide beam) range determined by step 1, while the Rx beam of the UE is unchanged to determine Tx narrow beam (narrow beam);

step 3, the base station fixes the Tx beam as the Tx narrow beam determined in the step 2, and sends a CSI-RS (repetition= "on") signal, namely, the UE autonomously realizes the reception without configuring QCL relation and scans, and the UE side Rx scans the beam to determine Rx beam.

In practice, after the UE determines the Rx beam, the UE monitors the communication quality of the physical downlink control channel (Physical downlink control channel, PDCCH) with a periodic reference signal, and if it finds that the channel cannot provide reliable communication, the UE declares a beam failure and then informs the base station of the failure indication and a new appropriate beam for beam failure recovery (Beam Failure Recovery, BFR).

Specifically, BFR is a process that operates in conjunction with L1 (physical layer) and L2 (medium access control (Medium Access Control, MAC) layers), and in the beam failure detection (Beam Failure Detection, BFD) and recovery process, the relevant protocol involving the MAC layer in L2, which may also be referred to as link recovery, consists of four parts: BFD, new candidate beam identification ((New candidate Beam Identification, NBI), beam failure recovery request (Beam Failure Recovery Request, BFRQ), and beam recovery.

1. Beam failure detection

The terminal measures a beam failure detection reference signal (beam failure detection reference signal, BFD RS) at the physical layer and judges whether a beam failure event occurs according to the measurement result. The judging conditions are as follows: if it is detected that the metric (metric) (i.e., the Block Error Rate (BLER)) of the all control beams (control beams) PDCCH meets a preset condition (i.e., exceeds a preset BLER threshold), it is determined as a beam failure instance (beam failure instance, BFI), and the UE physical layer reports an indication to the UE higher layer (i.e., the MAC layer), where the reporting process is periodic, the BFI reporting period is the shortest period of the BFD RS, and the lower limit is 2ms. As shown in fig. 4, the UE higher layer counts the BFI indications reported by the physical layer using a counter and a timer (e.g., a beam failure recovery timer (beam Failure Recovery Timer), hereinafter referred to as "timer"), and upon receiving a BFI indication, restarts the timer, and if the timer times out, the counter re-counts, and when the counter reaches the maximum number of network configurations, the UE declares that a beam failure event has occurred (beam failure event). Wherein the counter and timer of the MAC layer of the UE are configured for each active Bandwidth Part (BWP), and the start and maintenance of the counter and timer on each BWP are independent.

Wherein, BFD RS can be configured by a display or implicit method:

1) Display configuration: the network side configures periodic CSI-RS resources to the UE through RRC as BFD-RS.

It should be noted that: BFD-RS must be QCL related to PDCCH demodulation reference signals (Demodulation Reference Signal, DMRS) (control resource set (Control resource set, CORESET)). In practice, the RSs for BFD and radio link monitoring (RadioLinkMonitor, RLM) may be jointly configured by one RRC message to reduce configuration signaling overhead.

2) Implicit configuration: the BFD-RS is determined by the RS in the active TCI state corresponding to the PDCCH, index of the RS is included in set q0, where set q0 represents the set of BFD-RSs, and in practice, the UE expects a single-ended RS in set q 0. In addition, the TCI state may include two RSs, and at this time, the RS corresponding to QCL type D is taken as BFD-RS. And the BFD-RS set is updated with the PDCCH TCI state.

2. Determination of new candidate beams (i.e. determination of NBI-RS)

The physical layer measures the individual candidate beam reference signals to find a new candidate beam, where the maximum number of candidate beams is typically 16 (i.e., maxnrofcandidatebeams=16), and the total candidate beam reference signals are expressed as follows: set q1.

In the primary cell (PCell) or primary secondary cell (PSCell), the reference signal in Set q1 is associated with PRACH resources, i.e., may be considered as beam associated with PRACH resources. When a new candidate beam reference signal (q-new) is selected (i.e., a new candidate beam is determined), the UE performs BFRQ on the PRACH resource corresponding to q_new. For the secondary cell (SCell), the NBI-RS must be configured by the network side device.

Wherein the reference signal may be any of the following:

periodic CSI-RS (P-CSI-RS), SSB, and sbb+csi-RS.

When the UE physical layer is searching for new candidate beams, reporting a measurement result meeting a preset condition (namely that the reference signal received power (L1-Reference Signal Received Power, L1-RSRP) of the bottom layer is larger than the RSRP threshold value (RSRP-ThresholdSSB) of the configured SSB) to the UE high layer, wherein the reporting form (such as reporting: CSI-RS resource indication (CSI-RS Resource Indicator, CRI)/SSB resource indication (SSB Resource Indicator, SSBRI) or L1-RSRP) is the same as beam reporting.

In some embodiments, for PCell or PSCell, the physical layer reports CSI-RS/SSB indication with L1-RSRP values greater than a threshold and L1-RSRP values to higher layers;

in other embodiments, for Scell, the physical layer indicates to the higher layer whether there is an RS satisfying the L1-RSRP threshold, and if so, reports the RS index satisfying the threshold condition and the measured L1-RSRP value to the higher layer.

In this way, the UE higher layer selects a new candidate beam NBI based on the physical layer reporting.

The configuration of the threshold value of L1-RSRP is divided into the following two cases:

case one: for SSB, configuring a higher layer parameter rsrp-threshold SSB by RRC;

and a second case: for CSI-RS, RRC does not directly configure the threshold, but rather implicitly pushes out the L1-RSRP threshold of CSI-RS by configuring the power difference (powerControlOffsetSS) between CSI-RS and SSB.

3.BFRQ

And the MAC layer determines a PRACH channel for BFRQ according to the selected new wave beam, wherein the PRACH channel is a channel configured by the network side equipment.

4. Beam recovery

For PCell or PSCell, configured candidate beam RSs are associated with PRACH resources. When one of the RSs is selected as a new candidate beam (hereinafter referred to as q_new), the UE will send the corresponding preamble on the RACH time-frequency resource (i.e. RO, hereinafter assumed to be the nth slot (slot n)) associated with q_new, and on the n+4 th slot, the UE will start to detect the PDCCH scrambled by the Cell radio network temporary identity (Cell RNTI, C-RNTI)/Cell radio network temporary identity (Modulcation Coding Scheme Cell RNTI, MCS-C-RNTI) of the modular coding scheme in the search space (search space) BFR and its associated CORESET with the beam receiving q_new, the detection window length being defined by the RRC parameters: beam fault recovery timing duration (beamfailurerecovery timer) configuration, the SearchSpace BFR is configured by higher layer parameters: the search space ID (recoverySearchSpaceId) configuration is restored.

For the received PDCCH and the corresponding physical downlink shared channel (Physical downlink shared channel, PDSCH), the UE uses TCI-StatesPDCCH-ToAddList according to history or configuration to use QCL Type A in TCI states with the same QCL Type D and q_new for estimation and decoding of the PDCCH/PDSCH until the MAC CE activates a new TCI state or the RRC configures an add TCI state list (TCI-StatesPDCCH-ToAddList) to add the new TCI state, the UE uses the new TCI state to receive and decode the PDCCH/PDSCH, wherein the UE searches for the TCI state with the same QCL Type D and q_new standard from TCI-StatesPDCCH-ToAddList according to q_new as the new TCI state to receive and decode the PDCCH/PDSCH.

It should be noted that TCI defines a plurality of pairs of reference signals for QCL indication, and describes a reference signal that can be used as a QCL source and characteristics common to a source signal and a target signal, that is, QCL information is transmitted by configuring TCI status.

In downlink transmission, source reference signals that may be used as Tx beam indications include:

an SS/PBCH block, wherein an Rx beam for receiving the SS/PBCH block may be used to receive downlink transmission data;

CSI-RS for beam management;

CSI-RS for CSI acquisition;

CSI-RS for tracking (i.e., tracking reference signal (Tracking Reference Signal, TRS)).

In uplink transmission, source reference signals that may be used as Tx beam indications include:

an SS/PBCH block, wherein an Rx beam for receiving the SS/PBCH block may be used as a Tx beam for transmitting uplink data;

CSI-RS for beam management;

the Rx beam for receiving some CSI-RS resources may be used as a Tx beam for transmitting uplink data;

CSI-RS for CSI acquisition;

sounding reference signals (Sounding Reference Signal, SRS), wherein Tx beams used for transmitting certain SRS resources may also be used as Tx beams for uplink data transmission.

Wherein by definition, QCL refers to the channel characteristics of one port symbol transmission that can be inferred from the channel characteristics of another port symbol transmission. Strictly speaking, QCL refers to the correlation between reference signals for UE reception, but in practical applications, the base station can only guarantee that reference signals sent by the same TRP have similar characteristics.

In LTE, the channel feature classification defined by the QCL rules may include: type a and Type B.

Wherein, type a represents: it is assumed that the antenna ports transmitting Common Reference Signals (CRS), CSI-RS, DM-RS have the same delay spread, doppler shift and average delay characteristics.

Type B represents: it is assumed that the antenna ports transmitting CSI-RS, DM-RS have the same delay spread, doppler shift and average delay characteristics.

In NR, the QCL rule (transmission of any reference signal from any TRP) defines that channel characteristics can be the same including: type a, type B, type C, and Type D.

Wherein, type a represents: delay spread, doppler shift, and average delay.

Type B represents: doppler spread, doppler shift.

Note that, for the frequency band below 6GHz, type B has the following conditions:

case one: the target reference signal is a narrow beam and the source reference signal is a wide beam.

In this case, it is generally considered that the doppler parameter (Type B) experienced by a signal transmitted from the same station is still uniform, but the scatterers covered by beams of different widths are different, so that the delay spread and the average delay parameter experienced by the signal propagation are greatly affected. Therefore, these two reference signals cannot form QCL relationship in terms of both delay spread and average delay. For example, TRS employs sector wide beams, while CSI-RS may produce narrow beams by beamforming.

And a second case: the target reference signal has insufficient time domain density but sufficient frequency domain density.

In this case, relying on the target reference signal itself may not be sufficient to accurately estimate the time-varying parameters of the channel, so that doppler parameters may be provided by the source reference signal; but since the frequency domain density is sufficient, the source reference signal itself can estimate frequency domain parameters such as average delay and delay spread, e.g., CSI-RS and TRS.

Type C represents: doppler shift, average delay. For the frequency band above 6GHz, and under the condition that the synchronous signal block SSB is the source RS, the SSB only can acquire the relevant parameter estimation of the Type C due to limited resources and density occupied by the SSB, and the rest can be acquired by the target RS by self measurement.

Type D represents: spatial Rx parameters.

It should be noted that, type a, type B, and Type C are applicable to any carrier frequency domain, and Type D is only applicable to a high frequency band, i.e. an omni-directional antenna cannot be used, and only applicable to a case where beamforming generates beam for transmission, such as FR 2. In addition, the NR QCL rules of Type a, type B, and Type C are similar to the LTE QCL rules, i.e., if both reference signals belong to Type B, the doppler spread and doppler shift characteristics of both reference signals are the same. And Type D is applicable to high frequency bands, and requires both the base station and the UE to generate beam for transmission through beamforming. Therefore, when the base station changes the Tx beam due to mobility or the like, it is necessary to inform the UE of the characteristic parameters of the Rx beam applicable to the new Tx beam, thereby ensuring that the UE can select an appropriate Rx beam according to the characteristic parameters. For Type D, assuming that reference signal a and reference signal B are spatially co-located (spatial co-located), it is indicated that the same Rx beam may be used when the UE receives both reference signals.

In practice, the rest of the reference signals require a valid TCI indication, except for SS/PBCH. In FR1, one TCI state contains only one reference signal and can only provide large-scale channel characteristics in Type a\b\c; in FR2, one TCI state contains two reference signals, the first of which is a reference signal providing Type a\b\c and the second of which is a reference signal providing Type D.

The TCI framework may assist in the reception of CSI-RS for CSI acquisition, CSI-RS for beam management, dedicated demodulation reference signals (Dedicated demodulation reference signals, DM-RS) for PDCCH demodulation, and DM-RS for PDSCH demodulation. But for a given reference signal not all the remaining reference signals may be used as their source signals, only certain specific reference signals may be used as source signals, which are included in the TCI state to transmit QCL information.

For example: in the following communication protocol configurations, reference signal represents a reference signal (e.g., CSI-RS and/or SSB) that may be used to measure beam, and the performance parameters of the reference signal may be configured by the following protocols, such as: TCI state identity, QCL type, serving cell identity, etc.

In summary, with the application of narrower beams, the total beam number increases sharply, so that the number of TCI states required for indicating the reference signals corresponding to each beam also increases sharply, and accordingly, the probability of the network side device re-allocating the TCI states also increases, and in the related art, a longer delay is caused by the manner of RRC re-allocating the TCI states, which reduces the communication performance of the communication system.

In the embodiment of the present application, the terminal determines the target reference signal according to the TCI state pool/group indicated in the indication signaling sent by the network side device and/or the TCI state, and detects the target reference signal, where the time delay of the TCI state is shorter compared with the manner of RRC reconfiguration of the TCI state in the related art, so that the influence of the time delay in the TCI state reconfiguration process on the communication system can be reduced, that is, the communication performance of the communication system is improved.

The method, the device, the terminal and the network side device for detecting and configuring the reference signal provided by the embodiment of the application are described in detail below through some embodiments and application scenes thereof with reference to the accompanying drawings.

Referring to fig. 5, a method for detecting a reference signal according to an embodiment of the present application may be a terminal, and as shown in fig. 5, the method for detecting a reference signal may include the following steps:

step 501, the terminal receives an indication signaling, where the indication signaling carries first identification information and/or second identification information, where the first identification information is used to identify a transmission configuration indication TCI state pool/group, and the second identification information is used to identify a target TCI state in the TCI state pool/group.

In implementations, at least one TCI state may be included in the TCI state pool/group, and the TCI states in different TCI state pools/groups may be different from each other, or at least partially the same TCI state may be included in different TCI state pools/groups. For example: as shown in fig. 6, assume that the network side device divides the TCI state into n TCI state pools (pool), where pool 0 includes 5 TCI states, which are respectively: TCI 0-4, and pool 1 may also include TCI 5, and the pool 1 may also include other TCI states than in pool 0: TCI 5-9.

It should be noted that, the TCI state pool/group identified by the first identification information may be understood as: network side device activated TCI status pool/group. For example: the network side device may activate only at least some TCI ports of the n TCI ports, and the other TCI ports are not activated, where the network side device informs the terminal of which TCI ports are activated through the first identification information in the indication signaling, so that the terminal measures the RS corresponding to the TCI state in the activated TCI ports according to the indication of the network side device.

Furthermore, the number of TCI states contained by different TCI state pools/groups may be different, and the number of TCI states contained by each TCI state pool/group may be configured by the network side device, for example: the first identification information corresponding to each TCI state pool/group may be configured by the network side RRC, and the number and content of TCI states included in each TCI state pool/group may be reconfigured by the RRC, or dynamically adjusted by a MAC Control Element (CE), which is not described herein.

In some embodiments, TCI states in one TCI state pool/group may correspond to the same type D RS, for example: as shown in fig. 7, it is assumed that the network side device configures (activates) two TCI state groups, where RS 0, RS 1, RS 2, RS 3, and RS 4 correspond to the TCI state group 1, and type D RS corresponding to the 5 RSs is source#0. And corresponding to RS 4, RS 5, RS 8 and RS 9 in the TCI state group 2, wherein the type D RS corresponding to the 4 RSs is Source #1.

A wide beam (assuming that the corresponding type D RS is CSI-RS 1) has a coverage angle of 60 ° and a narrow beam has a coverage angle of 20 °, and the wide beam covers 3 narrow beams (assuming that the corresponding RSs are SSB 1, SSB 2, and SSB 3), one TCI state pool/group may include 3 TCI states corresponding to SSB 1, SSB 2, and SSB 3 one to one, respectively.

In other embodiments, TCI states in a TCI state pool/group may also correspond to different types D RSs (reference RSs).

In general, if TCI states in one TCI state pool/group correspond to different types D RS, the different types D RS corresponding to the TCI states in the one TCI state pool/group are associated with each other or are adjacent to each other. Wherein, the correlation of different types D RS may be: the coverage of one type D RS contains the coverage of another type D RS, or different types D RS are associated to the same RS. For example: the coverage angle of a certain wide beam is 60 °, and the coverage angle of a narrow beam is 20 °, and the wide beam may cover 3 narrow beams, at this time, a TCI state pool/group may include TCI states of reference signals carried by the wide beam, and TCI states of reference signals carried by the narrow beam covered by the wide beam.

In addition, the indication signaling carries the first identification information and/or the second identification information, which can be understood as:

case one: when the network side equipment sends an indication signaling to the terminal for the first time, the indication signaling can carry first identification information and second identification information, so that the terminal determines an activated target TCI state pool/group identified by the first identification information, and can also determine a target TCI state in the target TCI state pool/group according to the second identification information.

And a second case: when the network side device sends the indication signaling to the terminal for the nth time (n is an integer greater than or equal to 1), the indication signaling can carry the first identification information, the second identification information, or the first identification information and the second identification information.

Example one: in the case that the activated TCI state pool/group configured by the network side device is switched, the indication signaling may carry first identification information and second identification information, where the first identification information is used to identify the switched TCI state pool/group, and the second identification information is used to identify the target TCI state in the switched TCI state pool/group.

Example two: when the activated TCI state pool/group configured by the network side device is not switched, and the TCI state in the TCI state pool/group is changed, the indication signaling may carry second identification information, and at this time, the terminal may determine the target TCI state pool/group according to the indication signaling carrying the first identification information received last time, and determine the target TCI state in the target TCI state pool/group according to the second identification information carried in the currently received indication signaling.

Of course, when the network side device sends the indication signaling to the terminal for the nth time, there may be a case that the indication signaling only carries the first identification information, and at this time, the terminal may detect reference signals corresponding to all TCI states in the target TCI state pool/group identified by the first identification information, for example: the network side equipment configures a target TCI state pool/group to only contain one or at least two TCI states corresponding to the reference signals which need to be detected by the terminal.

In addition, in the case that the indication signaling only carries the second identification information, the terminal may acquire the first identification information in addition to the first identification information in the indication signaling received in the history, for example: the first identification information is determined by a mode agreed in advance by a protocol or by adopting a default mode of a terminal.

It should be noted that, the second identification information in the embodiment of the present application only needs to satisfy that each TCI state in the TCI state pool/group corresponding to the first identification information can be distinguished, and the number of bits required for the second identification information is less than the number of bits occupied by the TCI identification used for indicating each TCI state in the related art.

In this embodiment, when the terminal receives the indication signaling for the nth time, the terminal may only receive the indication signaling carrying the first identification information or the second identification information, which can reduce resource consumption of the terminal and the network side device compared with the related art that needs to configure the indication information corresponding to each TCI sta one by one through RRC. For example: assuming that the total number of TCI stas is 128, the related art needs 7-bit indication information to indicate a certain TCI sta therein, and in this embodiment of the present application, each TCI sta pool/group may be distinguished by using 3-bit first identification information, and each TCI sta in the TCI sta pool/group may be distinguished by using 4-bit second identification information, so that when the indication signaling includes only the second identification information, it only needs to consume 4-bit transmission resources to indicate the specified TCI sta.

Step 502, the terminal detects a target reference signal according to the first identification information and/or the second identification information.

In some embodiments, the terminal detecting the target reference signal may be understood as: the terminal detects BFD-RS and/or NBI-RS. That is, the target reference signal may include a beam restoration failure reference signal BFD-RS, or include a new beam identification reference signal NBI-RS, or include BFD-RS and NBI-RS, wherein the number of NBI-RS may be 1 or more.

In an implementation, the BFD-RS and the NBI-RS may be configured in the same active TCI state pool/group by the network side device, and the first identification information of the TCI state pool/group and/or the second identification information of the TCI state corresponding to at least one of the BFD-RS and the NBI-RS are notified to the terminal through the indication signaling, so that the terminal may determine the BFD-RS and/or the NBI-RS according to the first identification information and/or the second identification information carried in the received indication signaling, and perform corresponding detection on the BFD-RS and/or the NBI-RS.

Optionally, the network side device may include, in the TCI status pool/group configured (i.e. activated), the TCI status respectively corresponding to the BFD-RS and the NBI-RS that the terminal needs to detect, for example: the target TCI state pool/group includes one TCI state corresponding to BFD-RS and TCI states corresponding to 3 NBI-RS. At this time, the indication signaling may carry first identification information of the target TCI state pool/group and second identification information of a TCI state corresponding to the BFD-RS, the terminal may determine the target TCI state pool/group according to the first identification information, determine the BFD-RS according to the second identification information, and the terminal may further use reference signals corresponding to other TCI states in the target TCI state pool/group as the NBI-RS by itself.

Of course, the indication signaling may also include second identification information of the TCI state corresponding to each NBI-RS, and the NBI-RS and the BFD-RS may be located in different TCI state pools/groups, for example: assuming that the network side device configures (i.e., activates) 2 TCI state pools/groups, the BFD-RS may be located in one of the TCI state pools/groups, while the NBI-RS may be located in the other TCI state pool/group.

In implementation, the terminal may determine whether the target reference signal belongs to BFD-RS or NBI-RS according to the configuration parameters of the target reference signal, so as to perform corresponding detection, which is not specifically described herein.

In other words, the detecting, by the terminal, the target reference signal according to the first identification information and/or the second identification information may include:

the terminal determines the BFD-RS according to the first identification information and/or the second identification information and detects the BFD-RS; and/or the number of the groups of groups,

and the terminal determines the NBI-RS according to the first identification information and/or the second identification information and detects the NBI-RS.

Similar to step 501, when the terminal receives the indication signaling for the first time, the terminal determines the BFD-RS and/or NBI-RS according to the first identification information and the second identification information; when the terminal receives the indication signaling for the nth time, the terminal determines the BFD-RS and/or the NBI-RS according to the first identification information and the second identification information, or the terminal determines the BFD-RS and/or the NBI-RS according to the first identification information in the indication signaling received currently, or the terminal determines the BFD-RS and/or the NBI-RS according to the second identification information in the indication signaling received currently and the first identification information in the history indication signaling, wherein the history indication signaling represents the indication signaling carrying the first identification information received by the terminal last time.

Specifically, the terminal performs fault failure detection on the BFD-RS to judge whether a beam failure event (beam failure event) occurs to the terminal according to a detection result; and/or the number of the groups of groups,

and the terminal performs new candidate beam detection on the NBI-RS to determine whether the NBI-RS meeting the performance requirement exists. Furthermore, when the terminal has a beam failure event, the terminal may report the identification information of the NBI-RS satisfying the performance requirement, or report the indication information that the NBI-RS satisfying the performance requirement is not detected.

Optionally, the performance requirement includes at least one of:

the reference signal received power RSRP is greater than or equal to the RSRP threshold;

signal-to-interference-plus-noise ratio (SINR) is greater than or equal to SINR threshold;

the block error rate BLER is less than or equal to the BLER threshold;

the Signal-to-Noise Ratio (SNR) is greater than or equal to the SNR threshold.

In implementations, the RSRP threshold and/or SINR threshold and/or BLER threshold and/or SNR threshold described above may be predefined in the communication protocol. Of course, the RSRP threshold and/or SINR threshold and/or BLER threshold and/or SNR threshold may also be determined by the terminal according to its own performance parameters, for example: the more powerful the terminal performance, the larger the BLER threshold may be, not specifically defined herein.

Notably, in the related art, after RRC reconfiguration of the TCI state, the UE needs to decode the new TCI state. In the embodiment of the present application, the network side device configures the BFD-RS and the NBI-RS in the same active TCI state pool/group, so as to reduce the probability of decoding a new TCI state by the terminal, thereby reducing the overhead of the terminal.

As an alternative embodiment, the indication signaling may be DCI signaling or MAC CE signaling.

Taking the indication signaling as a DCI signaling as an example, the DCI signaling may use a newly added indication field to carry the first identification information and/or the second identification information, or use bits available in an existing indication field in the DCI signaling to carry the first identification information and/or the second identification information.

In this embodiment, the activated TCI state pool/group may be switched through DCI signaling, that is, the activated TCI state pool/group changes, where the DCI signaling may carry first identification information and second identification information; or updating at least part of TCI states in the activated TCI state pool/group through DCI signaling, that is, the activated TCI state pool/group is unchanged, and changing the TCI state content in the activated TCI state pool/group, where the DCI signaling may carry the second identification information.

For the MAC CE signaling, the manner of carrying the first identification information and/or the second identification information through the MAC CE signaling is similar to the manner of carrying the first identification information and/or the second identification information through the DCI signaling, which is not described herein again.

For example: as shown in fig. 8, the network side updates part of TCI state information in the TCI state Pool (Pool 0) from TCIs 0 to 3 to TCIs 5 to 9 through MAC CE.

In this embodiment, in view of the fact that the DCI signaling belongs to the physical layer, compared with RRC higher layer signaling, the configuration and transmission delay are shorter, so that configuring the TCI state through the DCI signaling can shorten the delay in the process of re-configuring the TCI state; similarly, the TCI state is configured using MAC CE signaling of the MAC layer, which can reduce the delay in the process of re-configuring the TCI state as compared to the manner of re-configuring the TCI state by RRC higher layer signaling.

As an alternative embodiment, the indication signaling includes any one of the following:

the first signaling carries single-layer information, wherein the single-layer information comprises the first identification information and/or the second identification information;

a second signaling carrying first layer information and/or second layer information, wherein the first layer information comprises the first identification information, and the second layer information comprises the second identification information;

The method comprises combined signaling of a first sub-signaling and/or a second sub-signaling, wherein the first sub-signaling carries the first identification information, and the second sub-signaling carries the second identification information.

Embodiment one

For the embodiment that the indication signaling includes the first signaling carrying single-layer information, the first identification information and/or the second identification information are single-layer information carried in the first signaling, so that the terminal can determine the target TCI state pool/group according to the single-layer information, or can also determine the target TCI state in the target TCI state pool/group, thereby determining the BFD-RS and/or the NBI-RS according to the single-layer information.

Optionally, in case the indication signaling includes a first signaling, the determining, by the terminal, the BFD-RS and/or the NBI-RS according to the first identification information and/or the second identification information includes:

the terminal determines a target TCI state pool/group according to first identification information carried by the first signaling, and determines a reference signal corresponding to a target TCI state in the target TCI state pool/group as the BFD-RS and/or the NBI-RS according to second identification information carried by the first signaling.

Of course, in implementation, the network side device may configure a single layer of information in the first signaling, so that the first signaling carries the first identification information or the second identification information, which is not limited herein specifically.

Second embodiment

For the embodiment that the indication signaling includes the second signaling carrying the first layer information and/or the second layer information, the first identification information and the second identification information are respectively located in different layers of the second signaling, and the second signaling may carry only the first layer information, only the second layer information, or both the first layer information and the second layer information.

Optionally, in the case that the indication signaling includes the second signaling, the terminal determines the BFD-RS and/or the NBI-RS according to the first identification information and/or the second identification information, including at least one of the following:

if the second signaling carries first layer information and second layer information, the terminal determines a target TCI state pool/group according to the first layer information, and determines that a reference signal corresponding to a target TCI state in the target TCI state pool/group is the BFD-RS and/or the NBI-RS according to the second layer information;

if the second signaling only carries the second layer information, the terminal determines a target TCI state pool/group according to the first layer information in the historical second signaling, and determines that a reference signal corresponding to a target TCI state in the target TCI state pool/group is the BFD-RS and/or the NBI-RS according to the second layer information.

The historical second signaling may be understood as a second signaling that is received by the terminal last time and carries the first layer information. In other words, in the case that the activated TCI state pool/group configured by the network side device is unchanged, the network side device only carries the first identification information and the second identification information in the indication signaling sent for the first time, and in the indication signaling sent subsequently, only the second identification information can be carried, so that transmission resources for transmitting the indication signaling can be reduced.

Of course, the second signaling may also carry only the first layer information, for example: the network side device updates the TCI state in the target TCI state pool/group indicated by the first layer information in advance, so that the updated TCI state in the target TCI state pool/group is used to indicate the BFD-RS and/or the NBI-RS, which is not limited herein specifically.

Embodiment III

For embodiments in which the indication signaling comprises a combined signaling of a first sub-signaling and/or a second sub-signaling, the first sub-signaling and the second identification information are carried by different sub-signaling, respectively. In an implementation, the terminal may receive only the first sub-signaling and not the second sub-signaling, or the terminal may receive only the second sub-signaling and not the first sub-signaling, or the terminal may receive the first sub-signaling and the second sub-signaling.

Optionally, in the case that the indication signaling includes combined signaling, the terminal determines the BFD-RS and/or the NBI-RS according to the first identification information and/or the second identification information, including at least one of the following:

if the combined signaling comprises a first sub-signaling and a second sub-signaling, the terminal determines a target TCI state pool/group according to the first sub-signaling, and determines a reference signal corresponding to a target TCI state in the target TCI state pool/group as the BFD-RS and/or the NBI-RS according to the second sub-signaling;

if the combined signaling only comprises the second sub-signaling, the terminal determines a target TCI state pool/group according to the historical first sub-signaling, and determines that a reference signal corresponding to a target TCI state in the target TCI state pool/group is the BFD-RS and/or the NBI-RS according to the second sub-signaling.

The above history first sub-signaling may be understood as a first sub-signaling that is received by the terminal last time and carries the first layer information. In other words, in the case that the active TCI status pool/group configured by the network side device is unchanged, the network side device simultaneously transmits the first sub-signaling and the second sub-signaling only when the BFD-RS and/or the NBI-RS are indicated for the first time, and in the indication signaling transmitted subsequently, only the second sub-signaling may be transmitted, so that transmission resources for transmitting the indication signaling can be reduced.

Of course, the combined signaling may also include only the first sub-signaling, for example: the network side device updates the TCI state in the target TCI state pool/group indicated by the first sub-signaling in advance, so that the updated TCI state in the target TCI state pool/group is used to indicate the BFD-RS and/or the NBI-RS, which is not limited herein specifically.

Optionally, the method for detecting a reference signal further includes:

under the condition that at least one or all NBI-RSs in the target reference signals do not meet the performance requirements corresponding to the beam failure recovery related detection, the terminal detects NBI-RSs in another TCI state pool/group where the BFD-RSs are located, and under the condition that target NBI-RSs meeting the performance requirements are detected, first indication information is sent to network side equipment, wherein the first indication information indicates that the target NBI-RSs meet the performance requirements; or alternatively, the process may be performed,

and under the condition that at least one or all NBI-RSs in the target reference signals do not meet the performance requirements, the terminal sends second indication information to network side equipment through the BFD-RSs, wherein the second indication information is used for indicating that at least one or all NBI-RSs in the target reference signals do not meet the performance requirements.

It should be noted that, the first indication information or the second indication information may be reported to the network side device when the terminal detects that the beam failure event occurs. And the first indication information or the second indication information may be sent to the network side device through any uplink signal such as PRACH, PUCCH, PUSCH.

In an alternative embodiment, the same TCI state may be included in different TCI state pools/groups, and the BFD-RS configured by the network side device may be included in at least two active TCI state pools/groups.

In this way, when the terminal device detects that at least one or all NBI-RSs in the TCI state pool/group containing the BFD-RSs indicated by the network side device do not meet the performance requirement, the terminal device can automatically detect the NBI-RSs in the other TCI state pool/group containing the BFD-RSs, so that the efficiency and probability of the terminal device detecting the NBI-RSs meeting the performance requirement can be improved.

Further, in the case that the terminal detects the NBI-RS meeting the performance requirement in the other TCI state pool/group, the terminal reports the first indication information to the network side equipment. At this time, the network measurement device may switch the active TCI state pool/group according to the first indication information, or update the TCI in the active TCI state pool/group, so that the switched or updated active TCI state pool/group includes the target NBI-RS. After this, the configuration of the BFD-RS and/or NBI-RS by the network side device is performed in the switched or updated active TCI state pool/group.

In another optional implementation manner, the terminal device directly reports second indication information to the network side device when detecting that at least one or all NBI-RSs in the TCI status pool/group containing the BFD-RSs indicated by the network side device do not meet the performance requirement.

Correspondingly, the network side device may reconfigure the TCI state by switching the activated TCI state pool/group or updating the TCI in the activated TCI state pool/group based on the received first indication information or second indication information sent by the terminal, and send updated indication signaling corresponding to the TCI state in the switched or updated activated TCI state pool/group and the TCI state contained in the switched or updated activated TCI state pool/group to the terminal, so that the terminal can detect other reference signals according to the updated indication signaling.

Optionally, after the terminal sends the first indication information or the second indication information to the network side device, the method further includes:

the terminal receives updated indication signaling at the target time-frequency position;

and the terminal detects the updated target reference signal according to the updated indication signaling.

In implementation, the target time-frequency location may be a time period and/or a frequency domain location predefined by a protocol, or the target time-frequency location may be a time period and/or a frequency domain location reported by the terminal, for example: the uplink signal carrying the first indication information or the second indication information also carries the time period and/or the frequency domain position designated by the terminal.

In addition, the meaning of the updated indication signaling is similar to that of the indication signaling in step 501, and the difference is that: if the activated TCI state pool/group is not switched, the updated indication signaling may only carry the second identification information and not the first identification information. For example: the updated indication signaling is a first signaling carrying single-layer information, or a second signaling carrying only second-layer information, or a combined signaling comprising only second sub-signaling.

Correspondingly, the process of detecting the updated target reference signal by the terminal according to the updated indication signaling is similar to the process of detecting the target reference signal by the terminal according to the first identification information and/or the second identification information in step 502, and the difference is that: if the activated TCI status pool/group is not switched, the terminal detects a target reference signal according to the first identification information obtained in step 501 and the second identification information in the updated indication signaling, which is not described herein.

Referring to fig. 9, in the method for configuring a reference signal provided in the embodiment of the present application, an execution body may be a network side device, and as shown in fig. 9, the method for configuring a reference signal may include the following steps:

step 901, the network side device determines N TCI status pools/groups according to M transmission configuration indication TCI statuses, where N is an integer greater than or equal to 1, and M is an integer greater than N.

In practice, M may be less than or equal to the total number of N TCI state pools/groups respectively included, that is, different TCI state pools/groups may include the same TCI state.

Furthermore, the network side device may activate one or at least two of the N TCI state pools/groups for the specified terminal.

In an implementation, the network side device may switch to the TCI state pool/group of terminal configuration (activation) through DCI signaling or update to the TCI state information in the TCI state pool/group of terminal configuration (activation) through MAC CE.

Step 902, the network side device sends an indication signaling, where the indication signaling carries first identification information and/or second identification information, where the first identification information is used to identify a TCI state pool/group, and the second identification information is used to identify a target TCI state in the TCI state pool/group.

The meanings of the TCI state pool/group, the TCI state, the indication signaling, the first identification information, and the second identification information in the embodiment of the present application are the same as those of the TCI state pool/group, the TCI state, the indication signaling, the first identification information, and the second identification information in the embodiment of the method shown in fig. 5, and are not described herein. In addition, the method for configuring the reference signal provided in the embodiment of the present application corresponds to the method for detecting the reference signal shown in fig. 5, and the difference is that the method for configuring the reference signal shown in fig. 9 is a process performed by the network side device, and the embodiment of the method shown in fig. 5 is that the terminal detects the reference signal according to the indication of the network side device, and the method for configuring the reference signal shown in fig. 9 can obtain similar advantages as the method for detecting the reference signal shown in fig. 5, which is not described herein too.

Optionally, the indication signaling includes downlink control information DCI signaling or media access control unit MAC CE signaling.

Optionally, the indication signaling includes any one of the following:

Optionally, the target reference signal includes at least one of:

beam recovery failure reference signal BFD-RS;

the new beam identifies the reference signal NBI-RS.

Optionally, the method further comprises:

the network side equipment receives first indication information or second indication information, wherein the first indication information is used for indicating that at least one or all NBI-RSs in the target reference signals do not meet performance requirements corresponding to beam failure recovery related detection, the target NBI-RSs in another TCI state pool/group where the BFD-RSs are located meet the performance requirements, and the second indication information is used for indicating that at least one or all NBI-RSs in the target reference signals do not meet the performance requirements;

the network side equipment updates the indication signaling according to the first indication information or the second indication information, and sends the updated indication signaling at the target time-frequency position.

Optionally, the network side device updates the indication signaling according to the first indication information, including:

the network side equipment switches an activated TCI state pool/group into a TCI state pool/group where the target NBI-RS is located according to the first indication information, and generates updated indication signaling, wherein the updated indication signaling carries first identification information corresponding to the TCI state pool/group where the target NBI-RS is located and second identification information of a TCI state corresponding to the target NBI-RS; or alternatively, the process may be performed,

the network side equipment updates the TCI state in the activated TCI state pool/group according to the first indication information, so that the updated activated TCI state pool/group comprises the target NBI-RS, and generates updated indication signaling, wherein the updated indication signaling carries second identification information corresponding to the target NBI-RS.

In the implementation, when the network side device updates the TCI state in the activated TCI state pool/group according to the first indication information, the updated indication signaling may further carry first identification information corresponding to the TCI state pool/group where the target NBI-RS is located, which is not limited herein specifically.

Optionally, the performance requirement includes at least one of:

the signal-to-interference-plus-noise ratio SINR is greater than or equal to the SINR threshold;

the block error rate BLER is less than or equal to the BLER threshold;

the signal-to-noise ratio SNR is greater than or equal to the SNR threshold.

In order to facilitate understanding of the method for detecting a reference signal and the method for configuring a reference signal provided in the embodiments of the present application, the method for detecting a reference signal and the method for configuring a reference signal provided in the embodiments of the present application are exemplified by the following three embodiments:

example 1

As shown in fig. 6 and fig. 7, it is assumed that the base station currently configures (activates) two TCI state groups for the UE, where TCI state group 1 includes 5 TCI states corresponding to RSs 0 to 4 one by one, and type D RS corresponding to the 5 RSs is source#0. The TCI state group 2 includes 4 TCI states corresponding to RSs 4 to 9 one by one, and the type D RS corresponding to the 4 RSs is Source #1. At this time, the UE receives an indication signaling sent by the base station to indicate that BFD-RS at this time is RS 4 in the TCI state group 1, and detects NBI-RS for RSs 0 to 3. At this time, if the UE moves from the range covered by RS 4 to the range covered by RS 5, the UE cannot meet the performance requirement on the detection results of the beams corresponding to all the NBI-RS in the TCI state group 1, and detects the NBI-RS in the TCI state group 2. When the UE detects that the RS 5 is best, the UE reports to the network side equipment: the TCI state group 2 is most suitable, and the network side device instructs to switch to the TCI state group 2 through the updated indication signaling. I.e. update the first layer information in the second signaling or the first sub-signaling in the combined signaling. The selection of the subsequent BFD-RS and NBI-RS is then performed in TCI State group 2. Then, the UE re-detects the RS according to the updated indication signaling for a certain period of time.

Example two

As shown in fig. 6, it is assumed that the base station currently configures (activates) a TCI state group for the UE, where TCI state group 1 includes 5 TCI states corresponding to RSs 0 to 4 one by one, and type D RS corresponding to the 5 RSs is Source #0. At this time, the UE receives the indication signaling sent by the base station, so as to indicate that BFD-RS at this time is RS 4, and detects NBI-RS for RS 0-3. At this time, if it is found that all or at least one of RSs 0 to 3 do not meet the performance requirement, the UE reports the second indication information (may be reported by an uplink signal such as PRACH, PUCCH, PUSCH) to the network side device through BFD-RS (i.e., RS 4). And the network side equipment switches the TCI state group configured for the UE to the corresponding TCI state group through DCI signaling based on the received second indication information reported by the UE. Then, the UE re-detects the RS according to the updated indication signaling (i.e., the DCI signaling described above for switching the TCI state group) for a certain period of time.

In this embodiment, the UE preferably reports the second indication information to the network device when RS 0 to 3 do not meet the performance requirement.

Example III

As shown in fig. 6 and 8, it is assumed that the base station currently configures (activates) a TCI state group for the UE, where TCI state group 1 includes 5 TCI states corresponding to RSs 0 to 4 one by one, and type D RS corresponding to the 5 RSs is source#0. At this time, the UE receives the indication signaling sent by the base station, so as to indicate that BFD-RS at this time is RS 4, and detects NBI-RS for RS 0-3. At this time, if it is found that all or at least one of RSs 0 to 3 do not meet the performance requirement, the UE reports the second indication information (may be reported by an uplink signal such as PRACH, PUCCH, PUSCH) to the network side device through BFD-RS (i.e., RS 4). Based on receiving the second indication information reported by the UE, the network side device updates the TCI state information in the activated TCI state group through the MAC CE, for example: as shown in fig. 8, the network side updates part of TCI state information in the TCI state Pool (Pool 0) from TCIs 0 to 3 to TCIs 5 to 9 through MAC CE. Subsequently, the UE re-detects the RS according to the updated indication signaling (i.e., MAC CE signaling for updating TCI state information in the activated TCI state group) for a certain period of time.

In this embodiment, the UE preferably reports the second indication information to the network device when at least one of RSs 0 to 3 does not meet the performance requirement.

According to the method for detecting the reference signal, the execution body can be a device for detecting the reference signal. In the embodiments of the present application, a method for performing reference signal detection by using a reference signal detection device is taken as an example, and the reference signal detection device provided in the embodiments of the present application is described.

Referring to fig. 10, the apparatus for detecting a reference signal provided in the embodiment of the present application may be applied to a terminal, and as shown in fig. 10, the apparatus 1000 for detecting a reference signal may include the following modules:

a first receiving module 1001, configured to receive an indication signaling, where the indication signaling carries first identification information and/or second identification information, where the first identification information is used to identify a transmission configuration indication TCI state pool/group, and the second identification information is used to identify a target TCI state in the TCI state pool/group;

the first detection module 1002 is configured to detect a target reference signal according to the first identification information and/or the second identification information.

Optionally, the indication signaling includes any one of the following:

Optionally, the target reference signal includes at least one of:

beam recovery failure reference signal BFD-RS;

the new beam identifies the reference signal NBI-RS.

Optionally, the first detection module 1002 includes:

the first detection unit is used for determining the BFD-RS according to the first identification information and/or the second identification information and detecting the BFD-RS; and/or the number of the groups of groups,

and the second detection unit is used for determining the NBI-RS according to the first identification information and/or the second identification information and detecting the NBI-RS.

Optionally, in the case that the indication signaling includes first signaling, the first detection module 1002 includes:

And the first determining subunit is used for determining a target TCI state pool/group according to the first identification information carried by the first signaling, and determining that a reference signal corresponding to the target TCI state in the target TCI state pool/group is the BFD-RS and/or the NBI-RS according to the second identification information carried by the first signaling.

Optionally, in the case that the indication signaling includes the second signaling, the first detection module 1002 includes at least one of the following:

a second determining subunit, configured to determine, if the second signaling carries first layer information and second layer information, a target TCI state pool/group according to the first layer information, and determine, according to the second layer information, that a reference signal corresponding to a target TCI state in the target TCI state pool/group is the BFD-RS and/or the NBI-RS;

and the third determining subunit is configured to determine, if the second signaling carries only the second layer information, a target TCI state pool/group according to the first layer information in the second signaling, and determine, according to the second layer information, that a reference signal corresponding to a target TCI state in the target TCI state pool/group is the BFD-RS and/or the NBI-RS.

Optionally, in the case that the indication signaling includes combined signaling, the first detection module 1002 includes at least one of the following:

A fourth determining subunit, configured to determine, if the combined signaling includes a first sub-signaling and a second sub-signaling, a target TCI state pool/group according to the first sub-signaling, and determine, according to the second sub-signaling, that a reference signal corresponding to a target TCI state in the target TCI state pool/group is the BFD-RS and/or the NBI-RS;

and a fifth determining subunit, configured to determine, if the combined signaling includes only the second sub-signaling, a target TCI state pool/group according to the historical first sub-signaling, and determine, according to the second sub-signaling, that a reference signal corresponding to a target TCI state in the target TCI state pool/group is the BFD-RS and/or the NBI-RS.

Optionally, the apparatus 1000 for detecting a reference signal further includes:

the second detection module is used for detecting NBI-RS in another TCI state pool/group where the BFD-RS is located under the condition that at least one or all NBI-RS in the target reference signal does not meet the performance requirements corresponding to the beam failure recovery related detection;

the first sending module is used for sending first indication information to the network side equipment under the condition that the target NBI-RS meeting the performance requirement is detected, wherein the first indication information indicates that the target NBI-RS meets the performance requirement;

Or alternatively, the process may be performed,

the apparatus 1000 for detecting a reference signal further includes:

and the second sending module is used for sending second indication information to the network side equipment through the BFD-RS under the condition that at least one or all NBI-RSs in the target reference signals do not meet the performance requirements, wherein the second indication information is used for indicating that at least one or all NBI-RSs in the target reference signals do not meet the performance requirements.

the second receiving module is used for receiving the updated indication signaling at the target time-frequency position;

and the third detection module is used for detecting the updated target reference signal according to the updated indication signaling.

Optionally, the performance requirement includes at least one of:

the block error rate BLER is less than or equal to the BLER threshold;

the signal-to-noise ratio SNR is greater than or equal to the SNR threshold.

The apparatus 1000 for detecting a reference signal in this embodiment of the present application may be an electronic device, for example, an electronic device with an operating system, or may be a component in an electronic device, for example, an integrated circuit or a chip. The electronic device may be a terminal, or may be other devices than a terminal. By way of example, terminals may include, but are not limited to, the types of terminals 11 listed above, other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., and embodiments of the application are not specifically limited.

The apparatus 1000 for detecting a reference signal provided in this embodiment of the present application can implement each process implemented by a terminal in the method embodiment shown in fig. 5, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

According to the method for configuring the reference signal, the execution body can be a device for configuring the reference signal. In the embodiments of the present application, a method for configuring a reference signal by using a device for configuring a reference signal as an example is described.

Referring to fig. 11, the apparatus for configuring a reference signal provided in the embodiments of the present application may be applied to a network-side device, where the network-side device may include, but is not limited to, the types of network-side devices 12 listed above. As shown in fig. 11, the apparatus 1100 for configuring a reference signal may include the following modules:

a determining module 1101, configured to determine N TCI status pools/groups according to M transmission configuration indication TCI statuses, where N is an integer greater than or equal to 1, and M is an integer greater than N;

a third sending module 1102, configured to send an indication signaling, where the indication signaling carries first identification information and/or second identification information, where the first identification information is used to identify a TCI state pool/group, and the second identification information is used to identify a target TCI state in the TCI state pool/group.

Optionally, the indication signaling includes any one of the following:

Optionally, the target reference signal includes at least one of:

beam recovery failure reference signal BFD-RS;

the new beam identifies the reference signal NBI-RS.

Optionally, the apparatus 1100 for configuring a reference signal further includes:

a third receiving module, configured to receive first indication information or second indication information, where the first indication information is used to indicate that at least one or all of the target reference signals are not satisfied with performance requirements corresponding to beam failure recovery related detection, and that target NBI-RS in another TCI state pool/group where the BFD-RS is located satisfies the performance requirements, and the second indication information is used to indicate that at least one or all of the target reference signals are not satisfied with the performance requirements;

And the updating module is used for updating the indication signaling according to the first indication information or the second indication information and sending the updated indication signaling at the target time-frequency position.

Optionally, the updating module includes:

a switching unit, configured to switch an activated TCI state pool/group to a TCI state pool/group where the target NBI-RS is located according to the first indication information, and generate an updated indication signaling, where the updated indication signaling carries first identification information corresponding to the TCI state pool/group where the target NBI-RS is located and second identification information of a TCI state corresponding to the target NBI-RS; or alternatively, the process may be performed,

and the updating unit is used for updating the TCI state in the activated TCI state pool/group according to the first indication information, so that the updated activated TCI state pool/group comprises the target NBI-RS and generates updated indication signaling, and the updated indication signaling carries second identification information corresponding to the target NBI-RS.

Optionally, the performance requirement includes at least one of:

the block error rate BLER is less than or equal to the BLER threshold;

The signal-to-noise ratio SNR is greater than or equal to the SNR threshold.

The apparatus 1100 for configuring reference signals provided in this embodiment of the present application can implement each process implemented by the network side device in the method embodiment shown in fig. 9, and achieve the same technical effects, and in order to avoid repetition, a detailed description is omitted here.

Optionally, as shown in fig. 12, the embodiment of the present application further provides a communication device 1200, including a processor 1201 and a memory 1202, where the memory 1202 stores a program or an instruction that can be executed on the processor 1201, for example, when the communication device 1200 is a terminal, the program or the instruction implements the steps of the method embodiment for detecting a reference signal when executed by the processor 1201, and can achieve the same technical effects. When the communication device 1200 is a network side device, the program or the instruction, when executed by the processor 1201, implements the steps of the method embodiment for configuring the reference signal, and the same technical effects can be achieved, so that repetition is avoided, and further description is omitted here.

The embodiment of the application also provides a terminal, which comprises a processor and a communication interface, wherein the communication interface is used for receiving an indication signaling, the indication signaling carries first identification information and/or second identification information, the first identification information is used for identifying a transmission configuration indication TCI state pool/group, and the second identification information is used for identifying a target TCI state in the TCI state pool/group; the communication interface is further used for detecting a target reference signal according to the first identification information and/or the second identification information. The terminal embodiment corresponds to the terminal-side method embodiment, and each implementation process and implementation manner of the method embodiment are applicable to the terminal embodiment and can achieve the same technical effects. Specifically, fig. 13 is a schematic hardware structure of a terminal for implementing an embodiment of the present application.

The terminal 1300 includes, but is not limited to: at least some of the components of the radio frequency unit 1301, the network module 1302, the audio output unit 1303, the input unit 1304, the sensor 1305, the display unit 1306, the user input unit 1307, the interface unit 1308, the memory 1309, the processor 1310, and the like.

Those skilled in the art will appreciate that the terminal 1300 may further include a power source (e.g., a battery) for supplying power to the various components, and the power source may be logically connected to the processor 1310 through a power management system, so as to perform functions of managing charging, discharging, and power consumption management through the power management system. The terminal structure shown in fig. 13 does not constitute a limitation of the terminal, and the terminal may include more or less components than shown, or may combine certain components, or may be arranged in different components, which will not be described in detail herein.

It should be appreciated that in embodiments of the present application, the input unit 1304 may include a graphics processing unit (Graphics Processing Unit, GPU) 13041 and a microphone 13042, with the graphics processor 13041 processing image data of still pictures or video obtained by an image capturing device (e.g., a camera) in a video capturing mode or an image capturing mode. The display unit 1306 may include a display panel 13061, and the display panel 13061 may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like. The user input unit 1307 includes at least one of a touch panel 13071 and other input devices 13072. The touch panel 13071 is also referred to as a touch screen. The touch panel 13071 can include two parts, a touch detection device and a touch controller. Other input devices 13072 may include, but are not limited to, a physical keyboard, function keys (e.g., volume control keys, switch keys, etc.), a trackball, a mouse, a joystick, and so forth, which are not described in detail herein.

In this embodiment of the present application, after receiving downlink data from the network side device, the radio frequency unit 1301 may transmit the downlink data to the processor 1310 for processing; in addition, the radio frequency unit 1301 may send uplink data to the network side device. Typically, the radio unit 1301 includes, but is not limited to, an antenna, an amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.

Memory 1309 may be used to store software programs or instructions and various data. The memory 1309 may mainly include a first memory area storing programs or instructions and a second memory area storing data, wherein the first memory area may store an operating system, application programs or instructions (such as a sound playing function, an image playing function, etc.) required for at least one function, and the like. Further, the memory 1309 may include volatile memory or nonvolatile memory, or the memory 1309 may include both volatile and nonvolatile memory. The nonvolatile Memory may be a Read-Only Memory (ROM), a Programmable ROM (PROM), an Erasable PROM (EPROM), an Electrically Erasable EPROM (EEPROM), or a flash Memory. The volatile memory may be random access memory (Random Access Memory, RAM), static RAM (SRAM), dynamic RAM (DRAM), synchronous DRAM (SDRAM), double Data Rate SDRAM (ddr SDRAM), enhanced SDRAM (Enhanced SDRAM), synchronous DRAM (SLDRAM), and Direct RAM (DRRAM). Memory 1309 in embodiments of the present application includes, but is not limited to, these and any other suitable types of memory.

The processor 1310 may include one or more processing units; optionally, processor 1310 integrates an application processor that primarily handles operations related to the operating system, user interface, and applications, and a modem processor that primarily handles wireless communication signals, such as a baseband processor. It will be appreciated that the modem processor described above may not be integrated into the processor 1310.

The radio frequency unit 1301 is configured to receive an indication signaling, where the indication signaling carries first identification information and/or second identification information, where the first identification information is used to identify a transmission configuration indication TCI state pool/group, and the second identification information is used to identify a target TCI state in the TCI state pool/group;

the radio frequency unit 1301 is further configured to detect a target reference signal according to the first identification information and/or the second identification information.

Optionally, the indication signaling includes any one of the following:

Optionally, the target reference signal includes at least one of:

beam recovery failure reference signal BFD-RS;

the new beam identifies the reference signal NBI-RS.

Optionally, the detecting, by the radio frequency unit 1301, the target reference signal according to the first identification information and/or the second identification information includes:

a processor 1310, configured to determine the BFD-RS according to the first identification information and/or the second identification information, and control the radio frequency unit 1301 to detect the BFD-RS; and/or the number of the groups of groups,

and a processor 1310, configured to determine the NBI-RS according to the first identification information and/or the second identification information, and control the radio frequency unit 1301 to detect the NBI-RS.

Optionally, in a case where the indication signaling includes first signaling, the determining, by the processor 1310, the BFD-RS and/or the NBI-RS according to the first identification information and/or the second identification information includes:

The processor 1310 determines a target TCI state pool/group according to the first identification information carried by the first signaling, and determines that a reference signal corresponding to a target TCI state in the target TCI state pool/group is the BFD-RS and/or the NBI-RS according to the second identification information carried by the first signaling.

Optionally, in case the indication signaling includes second signaling, the determining, by the processor 1310, the BFD-RS and/or the NBI-RS according to the first identification information and/or the second identification information includes at least one of:

if the second signaling carries first layer information and second layer information, the processor 1310 determines a target TCI state pool/group according to the first layer information, and determines that a reference signal corresponding to a target TCI state in the target TCI state pool/group is the BFD-RS and/or the NBI-RS according to the second layer information;

if the second signaling only carries the second layer information, the processor 1310 determines a target TCI state pool/group according to the first layer information in the historical second signaling, and determines that a reference signal corresponding to a target TCI state in the target TCI state pool/group is the BFD-RS and/or the NBI-RS according to the second layer information.

Optionally, in a case where the indication signaling includes combined signaling, the determining, by the processor 1310, the BFD-RS and/or the NBI-RS according to the first identification information and/or the second identification information includes at least one of:

if the combined signaling includes a first sub-signaling and a second sub-signaling, the processor 1310 determines a target TCI state pool/group according to the first sub-signaling, and determines a reference signal corresponding to a target TCI state in the target TCI state pool/group as the BFD-RS and/or the NBI-RS according to the second sub-signaling;

if the combined signaling includes only the second sub-signaling, the processor 1310 determines a target TCI state pool/group according to the historical first sub-signaling, and determines that a reference signal corresponding to a target TCI state in the target TCI state pool/group is the BFD-RS and/or the NBI-RS according to the second sub-signaling.

Optionally, the radio frequency unit 1301 is further configured to:

detecting NBI-RS in another TCI state pool/group where the BFD-RS is located under the condition that at least one or all NBI-RS in the target reference signals do not meet the performance requirements corresponding to the beam failure recovery related detection, and sending first indication information to network side equipment under the condition that the target NBI-RS meeting the performance requirements is detected, wherein the first indication information indicates that the target NBI-RS meets the performance requirements; or alternatively, the process may be performed,

And under the condition that at least one or all NBI-RSs in the target reference signals do not meet the performance requirements, sending second indication information to network side equipment through the BFD-RSs, wherein the second indication information is used for indicating that at least one or all NBI-RSs in the target reference signals do not meet the performance requirements.

Optionally, after the radio frequency unit 1301 sends the first indication information or the second indication information to the network side device, the radio frequency unit 1301 is further configured to:

receiving updated indication signaling at the target time-frequency position;

and detecting the updated target reference signal according to the updated indication signaling.

Optionally, the performance requirement includes at least one of:

the block error rate BLER is less than or equal to the BLER threshold;

the signal-to-noise ratio SNR is greater than or equal to the SNR threshold.

The terminal 1300 provided in this embodiment of the present application can implement the method executed by each module shown in fig. 10, and can obtain the same beneficial effects, so that repetition is avoided, and no detailed description is given here.

The embodiment of the application also provides network side equipment, which comprises a processor and a communication interface, wherein the processor is used for determining N TCI state pools/groups according to M transmission configuration indication TCI states, N is an integer greater than or equal to 1, and M is an integer greater than N; the communication interface is configured to send an indication signaling, where the indication signaling carries first identification information and/or second identification information, where the first identification information is used to identify a TCI state pool/group, and the second identification information is used to identify a target TCI state in the TCI state pool/group.

The network side device embodiment corresponds to the network side device method embodiment, and each implementation process and implementation manner of the method embodiment can be applied to the network side device embodiment, and the same technical effects can be achieved.

Specifically, the embodiment of the application also provides network side equipment. As shown in fig. 14, the network side device 1400 includes: an antenna 1401, radio frequency means 1402, baseband means 1403, a processor 1404 and a memory 1405. An antenna 1401 is coupled to a radio 1402. In the uplink direction, the radio frequency device 1402 receives information via the antenna 1401 and transmits the received information to the baseband device 1403 for processing. In the downlink direction, the baseband device 1403 processes information to be transmitted, and transmits the processed information to the radio frequency device 1402, and the radio frequency device 1402 processes the received information and transmits the processed information through the antenna 1401.

The method performed by the network side device in the above embodiment may be implemented in the baseband apparatus 1403, and the baseband apparatus 1403 includes a baseband processor.

The baseband apparatus 1403 may, for example, include at least one baseband board, where a plurality of chips are disposed, as shown in fig. 14, where one chip, for example, a baseband processor, is connected to the memory 1405 through a bus interface, so as to invoke a program in the memory 1405 to perform the network device operation shown in the above method embodiment.

The network-side device may also include a network interface 1406, such as a common public radio interface (common public radio interface, CPRI).

Specifically, the network side device 1400 of the embodiment of the present invention further includes: instructions or programs stored in the memory 1405 and executable on the processor 1404, the processor 1404 invokes the instructions or programs in the memory 1405 to perform the method performed by the modules shown in fig. 11 to achieve the same technical effect, and are not repeated here.

The embodiment of the present application further provides a readable storage medium, where a program or an instruction is stored, and when the program or the instruction is executed by a processor, the program or the instruction implement each process of the method embodiment shown in fig. 5 or fig. 9, and the same technical effects can be achieved, so that repetition is avoided, and no further description is given here.

Wherein the processor is a processor in the terminal described in the above embodiment. The readable storage medium includes computer readable storage medium such as computer readable memory ROM, random access memory RAM, magnetic or optical disk, etc.

The embodiment of the present application further provides a chip, where the chip includes a processor and a communication interface, where the communication interface is coupled to the processor, and the processor is configured to run a program or an instruction, to implement each process of the method embodiment shown in fig. 5 or fig. 9, and to achieve the same technical effect, so that repetition is avoided, and no further description is given here.

It should be understood that the chips referred to in the embodiments of the present application may also be referred to as system-on-chip chips, or the like.

The embodiments of the present application further provide a computer program/program product, which is stored in a storage medium, and executed by at least one processor to implement the respective processes of the method embodiments shown in fig. 5 or fig. 9, and achieve the same technical effects, and are not repeated herein.

The embodiment of the application also provides a communication system, which comprises: a terminal and a network side device, the terminal being operable to perform the steps of the method of detecting a reference signal as described above, the network side device being operable to perform the steps of the method of configuring a reference signal as described above.

It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may also be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.

From the above description of the embodiments, it will be clear to those skilled in the art that the method of the above embodiments may be implemented by means of software plus a necessary general purpose hardware platform, or of course by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solutions of the present application may be embodied essentially or in a part contributing to the prior art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), comprising several instructions for causing a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to perform the method described in the embodiments of the present application.

The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those of ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are also within the protection of the present application.

Claims

1. A method of detecting a reference signal, comprising:

2. The method according to claim 1, wherein the indication signaling comprises downlink control information, DCI, signaling or medium access control unit, MAC CE, signaling.

3. The method of claim 1, wherein the indication signaling comprises any one of:

4. A method according to any one of claims 1 to 3, wherein the target reference signal comprises at least one of:

beam recovery failure reference signal BFD-RS;

the new beam identifies the reference signal NBI-RS.

5. The method according to claim 4, wherein the terminal detects a target reference signal according to the first identification information and/or the second identification information, comprising:

6. The method according to claim 5, wherein in case the indication signaling comprises first signaling, the terminal determines the BFD-RS and/or the NBI-RS based on the first identification information and/or the second identification information, comprising:

7. The method according to claim 5, wherein in case the indication signaling comprises second signaling, the terminal determines the BFD-RS and/or the NBI-RS from the first identification information and/or the second identification information, comprising at least one of:

8. The method according to claim 5, wherein in case the indication signaling comprises combined signaling, the terminal determines the BFD-RS and/or the NBI-RS from the first identification information and/or the second identification information, comprising at least one of:

9. The method of claim 5, wherein the method further comprises:

10. The method according to claim 9, wherein after the terminal transmits the first indication information or the second indication information to the network side device, the method further comprises:

11. The method of claim 9, wherein the performance requirements include at least one of:

the block error rate BLER is less than or equal to the BLER threshold;

the signal-to-noise ratio SNR is greater than or equal to the SNR threshold.

12. An apparatus for detecting a reference signal, the apparatus being applied to a terminal, the apparatus comprising:

13. The apparatus of claim 12, wherein the indication signaling comprises downlink control information, DCI, signaling or medium access control unit, MAC CE, signaling.

14. The apparatus of claim 12, wherein the indication signaling comprises any one of:

15. The apparatus according to any one of claims 12 to 14, wherein the target reference signal comprises at least one of:

beam recovery failure reference signal BFD-RS;

the new beam identifies the reference signal NBI-RS.

16. The apparatus of claim 15, wherein the first detection module comprises:

17. The apparatus of claim 16, wherein the first detection unit, in the case where the indication signaling comprises first signaling, comprises:

18. The apparatus of claim 16, wherein the first detection unit, in the case where the indication signaling comprises second signaling, comprises at least one of:

19. The apparatus of claim 16, wherein in the case where the indication signaling comprises combined signaling, the first detection unit comprises at least one of:

20. The apparatus as recited in claim 16, further comprising:

or alternatively, the process may be performed,

the apparatus further comprises:

21. The apparatus as recited in claim 20, further comprising:

22. The apparatus of claim 20, wherein the performance requirements comprise at least one of:

the block error rate BLER is less than or equal to the BLER threshold;

the signal-to-noise ratio SNR is greater than or equal to the SNR threshold.

23. A method of configuring a reference signal, the method comprising:

24. The method according to claim 23, wherein the indication signaling comprises downlink control information, DCI, signaling or medium access control unit, MAC CE, signaling.

25. The method of claim 23, wherein the indication signaling comprises any one of:

26. The method according to any one of claims 23 to 25, wherein the target reference signal comprises at least one of:

beam recovery failure reference signal BFD-RS;

the new beam identifies the reference signal NBI-RS.

27. The method of claim 26, wherein the method further comprises:

28. The method according to claim 27, wherein the network side device updates indication signaling according to the first indication information, including:

29. The method of claim 27, wherein the performance requirements include at least one of:

the block error rate BLER is less than or equal to the BLER threshold;

the signal-to-noise ratio SNR is greater than or equal to the SNR threshold.

30. An apparatus for configuring a reference signal, applied to a network side device, the apparatus comprising:

31. The apparatus of claim 30, wherein the indication signaling comprises downlink control information, DCI, signaling or medium access control unit, MAC CE, signaling.

32. The apparatus of claim 30, wherein the indication signaling comprises any one of:

33. The apparatus according to any one of claims 30 to 32, wherein the target reference signal comprises at least one of:

beam recovery failure reference signal BFD-RS;

the new beam identifies the reference signal NBI-RS.

34. The apparatus as recited in claim 33, further comprising:

35. The apparatus of claim 34, wherein the update module comprises:

36. The apparatus of claim 34, wherein the performance requirements comprise at least one of:

the block error rate BLER is less than or equal to the BLER threshold;

the signal-to-noise ratio SNR is greater than or equal to the SNR threshold.

37. A terminal comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method of detecting a reference signal as claimed in any one of claims 1 to 11.

38. A network side device comprising a processor and a memory storing a program or instructions executable on the processor, which when executed by the processor, implement the steps of the method of configuring a reference signal as claimed in any one of claims 23 to 29.

39. A readable storage medium, characterized in that the readable storage medium has stored thereon a program or instructions which, when executed by a processor, implement the steps of the method of detecting a reference signal according to any of claims 1 to 11 or the steps of the method of configuring a reference signal according to any of claims 23 to 29.