CN111479326A

CN111479326A - Information sending and detecting method and device

Info

Publication number: CN111479326A
Application number: CN201910068809.0A
Authority: CN
Inventors: 黄秋萍; 陈润华; 高秋彬
Original assignee: Telecommunications Science and Technology Research Institute Co Ltd
Current assignee: Datang Mobile Communications Equipment Co Ltd
Priority date: 2019-01-24
Filing date: 2019-01-24
Publication date: 2020-07-31
Anticipated expiration: 2039-01-24
Also published as: CN111479326B; WO2020151554A1

Abstract

The application discloses an information sending and detecting method and device, which can send a beam failure recovery response on a cell (or called carrier) different from the cell, and also can send the beam failure recovery responses of a plurality of cells on the same cell, so that the mode of sending the beam failure recovery response is more flexible, a base station sends the beam failure recovery response on a more reliable cell, and the performance of the beam failure recovery response can be better ensured. The information sending method provided by the application comprises the following steps: determining a beam failure recovery response of a first cell to be sent; sending a beam failure recovery response of a first cell on a target cell corresponding to the first cell; the first cell is a cell in which a beam failure occurs, and the target cell corresponding to the first cell includes at least one first cell and/or at least one cell other than the first cell.

Description

Information sending and detecting method and device

Technical Field

The present application relates to the field of communications technologies, and in particular, to a method and an apparatus for sending and detecting information.

Background

As low-frequency band resources become scarce, and millimeter wave frequency bands have more spectrum resources, which can provide larger bandwidth, and become important frequency bands for future applications of mobile communication systems. The millimeter wave band has a propagation characteristic different from that of the conventional low-band spectrum, such as higher propagation loss, poor reflection and diffraction performance, and the like, due to the shorter wavelength. Therefore, a larger-scale antenna array is usually adopted to form a shaped beam with a larger gain, so as to overcome the propagation loss and ensure the system coverage.

For the millimeter wave antenna array, because the wavelength is shorter, the antenna array spacing and the aperture are smaller, more physical antenna arrays are integrated in a two-dimensional antenna array with a limited size; meanwhile, because the millimeter wave antenna array has a limited size, the digital beam forming mode adopted by the low frequency band cannot be adopted due to the consideration of factors such as hardware complexity, cost overhead and power consumption, and a hybrid beam forming mode combining an analog beam and a limited digital port is usually adopted.

Specifically, for the system architecture of hybrid beamforming, the sending end is provided with N_TRoot antenna, receiving end having N_RA plurality of antennas, each having a separate RF channel and only K digital channels, where K is less than or equal to N_TAnd N_R。

For a multi-antenna array, each antenna has an independent rf link channel, but shares the same digital link channel, each rf link allows independent amplitude and phase adjustment of a transmitted signal, and a formed beam is mainly realized by phase and amplitude adjustment in the rf link, which is called an analog beamforming signal. And each antenna of the full digital beam forming antenna array has an independent digital link channel, and the amplitude and the phase of each path of signals can be controlled at a baseband.

Specifically, analog beamforming has the following characteristics:

in a first aspect, for analog beamforming, the signal transmitted by each antenna is typically phase shifted by a phase shifter;

in the second aspect, due to the limitation of device capability, analog beamforming is performed on the whole bandwidth, and cannot be performed separately like digital beamforming on a part of a molecular band, so analog beamforming is multiplexed in a Time Division (TDM) manner.

Due to the above features, the forming flexibility of analog beamforming is lower than that of digital beamforming. However, since the digital link required by the antenna array for analog beamforming is much lower than that of the antenna array for digital beamforming, the cost of the antenna array for analog beamforming is significantly reduced when the number of antennas becomes large.

The hybrid beamforming structure balances the flexibility of digital beamforming and the low complexity of analog beamforming, and has the capability of supporting simultaneous beamforming of a plurality of data streams and a plurality of users. Meanwhile, the complexity is controlled within a reasonable range, so that the method becomes a widely-used mode for millimeter wave transmission and becomes the most important transmission mode of a 5G NR system.

For a system adopting high-frequency band transmission, a downlink control channel (PDCCH) can adopt analog beamforming transmission to realize higher beamforming gain and larger coverage.

However, one of the important challenges facing analog beamforming for high frequency band is that the propagation loss of the transmission signal is large and the probability of being blocked is high. For the blocked PDCCH, the terminal cannot accurately obtain the control information of downlink transmission, so that the receiving performance is reduced, such as reduced rate, increased scheduling delay, reduced user experience, and the like. Theoretically, if the angle expansion of the transmission beam is wide enough, the whole cell coverage angle area can be covered, so that the problem of beam shielding does not occur. However, in order to obtain higher beamforming gain, the coverage angle of the beam is generally smaller and the beam is narrower. Therefore, in consideration of the limited resource quantity of the PDCCH and the narrow beam characteristics, in the high-frequency millimeter wave communication, the angular coverage of the control channel is limited, which easily causes a coverage hole of the control channel, and cannot ensure reliable reception of the control channel.

If the radio link is considered to be failed and the radio link re-establishment procedure is started if all the downlink beams configured for the control channel fail as in communications systems such as L TE, in addition to increasing the delay, there may be a waste of resources, since changing the transmit beam and/or the receive beam may make the reception quality of the downlink control signal meet the requirement.

Among them, the existing BFR mechanism of the NR system can only be performed on the primary cell (PCell, or referred to as primary carrier). However, in the prior art, after the terminal reports the beam failure recovery request of the primary cell, the base station sends a beam failure recovery response about the primary cell to the UE. This approach limits the beam failure recovery response to being sent only on the cell. Since the cell itself has beam failure, the terminal may not detect the beam failure recovery response, thereby increasing the delay of the beam failure recovery process and affecting the performance. When a terminal performs cell aggregation CA, a secondary cell (SCell, or referred to as a secondary carrier) is often configured in a high frequency band. Therefore, the beam failure recovery procedure of the secondary cell also needs to be considered.

Disclosure of Invention

The embodiment of the application provides an information sending and detecting method and device, which can send a beam failure recovery response on a cell (or called carrier) different from the cell, and also can send the beam failure recovery responses of a plurality of cells on the same cell, so that the mode of sending the beam failure recovery response is more flexible, a base station sends the beam failure recovery response on a more reliable cell, and the performance of the beam failure recovery response can be better ensured.

On a base station side, an information sending method provided by an embodiment of the present application includes:

determining a beam failure recovery response of a first cell to be sent;

sending a beam failure recovery response of a first cell on a target cell corresponding to the first cell;

the first cell is a cell in which a beam failure occurs, and the target cell corresponding to the first cell includes at least one cell in the first cell and/or at least one cell other than the first cell.

Optionally, the target cell includes a first type cell, where the first type cell is a cell that sends a beam failure recovery response of multiple cells in the first cell.

Optionally, the method further comprises: and the receiving terminal determines the time-frequency resource position and/or the sending beam of the beam failure recovery response according to the candidate new beam information for the candidate new beam information reported by the first cell.

Optionally, the method further comprises: sending the mapping relation between the candidate wave beam corresponding to the first cell and the time-frequency resource position of the wave beam failure recovery response to the terminal; the candidate beams comprise candidate new beams;

determining the time-frequency resource position and/or the sending beam of the beam failure recovery response according to the candidate new beam information, wherein the determining comprises the following steps:

and determining the time-frequency resource position of the beam failure recovery response according to the mapping relation between the beam indicated by the candidate new beam information and the time-frequency resource position of the beam failure recovery response.

Optionally, the method further comprises:

sending configuration information of a first control resource set (CORESET) to the terminal, wherein the first CORESET is used for carrying a beam failure recovery response, and the first CORESETs of at least two cells are the same; the first core set of any cell is the core set used for carrying the beam failure recovery response of the cell.

Optionally, the configuration information of the first control resource set CORESET is carried by configuration information of a first search space, where the first search space corresponds to the first CORESET, and the first search space is a search space corresponding to a first physical downlink control channel PDCCH for carrying a beam failure recovery response.

Optionally, the method further comprises:

the first search spaces of the at least two cells are different search spaces.

Optionally, the method further comprises:

the first search spaces of the at least two cells do not overlap in time.

Optionally, the sending a beam failure recovery response of the first cell on a target cell corresponding to the first cell includes: and transmitting the beam failure recovery response of the same cell as the first CORESET in the first cell by using the same transmission beam.

Optionally, the method further comprises:

receiving candidate new beam information reported by a terminal to the first cell;

sending a beam failure recovery response of a first cell on a target cell corresponding to the first cell, including: and obtaining a transmission beam corresponding to each cell in a cell with the same first CORESET in a first cell by using the candidate new beam information, and respectively transmitting a beam failure recovery response of each cell in the cell with the same first CORESET by using the transmission beam, wherein the first search space is a search space corresponding to a first physical downlink control channel PDCCH for carrying the beam failure recovery response.

Optionally, the method further comprises:

and when the first cell comprises a plurality of cells and the transmission opportunities of the beam failure recovery responses of part or all of the cells of the first cell collide, transmitting the beam failure recovery responses of the cells with the transmission opportunities of the beam failure recovery responses colliding according to the priorities of the plurality of cells.

Optionally, the sending the beam failure recovery response according to the priorities of the multiple cells includes:

and only transmitting the beam failure recovery response corresponding to the cell with the highest priority in the cells with the conflicting transmission opportunities of the beam failure recovery response.

Optionally, the method further comprises:

and indicating the cells which are corresponding to the cells and used for sending the beam failure recovery response to the terminal through signaling.

Optionally, the signaling comprises at least one of:

the correlation relationship between CORESET corresponding to a search space of a first physical downlink control channel PDCCH for carrying the beam failure recovery response and a cell for sending the beam failure recovery response is obtained;

the incidence relation between a search space of a first Physical Downlink Control Channel (PDCCH) carrying the beam failure recovery response and a cell for sending the beam failure recovery response is obtained;

an association relationship between a cell and a cell for transmitting a beam failure recovery response of the cell;

the association of the candidate beam of a cell with the cell used to transmit the beam failure recovery response of that cell.

On a terminal side, an embodiment of the present application provides an information detection method, including:

determining a target cell corresponding to the first cell;

monitoring a beam failure recovery response of a first cell on a target cell corresponding to the first cell; the first cell is a cell in which a beam failure occurs, and the target cell corresponding to the first cell includes at least one cell in the first cell and/or at least one cell other than the first cell.

Optionally, the beam failure recovery response of at least one cell of the first cell is monitored on the same target cell.

Optionally, the method further comprises:

for the first cell reporting the candidate new beam information, the base station determines the time-frequency resource position and/or the sending beam of the beam failure recovery response according to the candidate new beam information; and receiving the beam failure recovery response at a time-frequency resource position corresponding to the beam failure recovery response corresponding to the candidate new beam information, and/or receiving the beam failure recovery response by using a receiving beam corresponding to a transmitting beam corresponding to the candidate new beam information.

Optionally, the method further comprises: receiving a mapping relation between a candidate wave beam corresponding to the first cell and a time-frequency resource position of the wave beam failure recovery response sent by a base station, and determining the time-frequency resource position of the wave beam failure recovery response according to the mapping relation; wherein the candidate beam comprises the candidate new beam.

Optionally, the method further comprises:

acquiring configuration information of a first control resource set (CORESET) sent by the base station, and monitoring a beam failure recovery response on the first CORESET, wherein the first CORESET is used for carrying the beam failure recovery response, and the first CORESETs of at least two cells are the same; the first core set of any cell is the core set used for carrying the beam failure recovery response of the cell.

Optionally, the configuration information of the first control resource set CORESET is carried by configuration information of first search spaces, where one first search space corresponds to one first CORESET, and the first search space is a search space corresponding to a first physical downlink control channel PDCCH for carrying a beam failure recovery response.

Optionally, the method further comprises:

the first search spaces of the at least two cells are different search spaces.

Optionally, the method further comprises:

the first search spaces of the at least two cells do not overlap in time.

Optionally, monitoring a beam failure recovery response of the first cell on a target cell corresponding to the first cell includes: the same receive beam is used to monitor the first CORESET in the first cell for a beam failure recovery response for the same cell.

Optionally, the method further comprises: transmitting candidate new beam information for the first cell to a base station;

monitoring a beam failure recovery response of a first cell on a target cell corresponding to the first cell, including: and respectively monitoring the beam failure recovery response of the cell with the same first CORESET by using the receiving beam corresponding to the transmitting beam corresponding to each cell in the cell with the same first CORESET indicated in the candidate new beam information, wherein the first search space is a search space corresponding to a first Physical Downlink Control Channel (PDCCH) for carrying the beam failure recovery response.

Optionally, the method further comprises:

when the first cell comprises a plurality of cells and the transmission opportunities of the beam failure recovery responses of part or all of the cells conflict, the beam failure recovery responses of the cells with the conflicting transmission opportunities of the beam failure recovery responses are monitored according to the priorities of the plurality of cells.

Optionally, sending a candidate new beam corresponding to the first cell to the base station;

acquiring the beam failure recovery response according to the priority of the first cell, including:

and monitoring the beam failure recovery response by using the receiving beam corresponding to the candidate new beam corresponding to the cell with the highest priority in the cells with the conflicting sending opportunities of the beam failure recovery response.

Optionally, acquiring the beam failure recovery response according to the priority of the first cell includes:

if the beam failure recovery response is monitored on the sending opportunity of the conflicted beam failure recovery response, determining that the beam failure recovery response is the beam failure recovery response corresponding to the cell with the highest priority on the sending opportunity of the conflicted beam failure recovery response.

Optionally, the method further comprises:

and acquiring a signaling which is sent by a base station and indicates a target cell corresponding to each cell and used for sending the beam failure recovery response, and determining the target cell corresponding to the first cell according to the signaling.

Optionally, the signaling comprises at least one of:

On the base station side, an embodiment of the present application provides an information transmitting apparatus, including:

a determining unit, configured to determine that a beam failure recovery response of the first cell needs to be sent;

a transmission unit, configured to send a beam failure recovery response of a first cell on a target cell corresponding to the first cell;

Optionally, the apparatus further comprises: and the receiving terminal determines the time-frequency resource position and/or the sending beam of the beam failure recovery response according to the candidate new beam information for the candidate new beam information reported by the first cell.

Optionally, the apparatus further comprises: sending the mapping relation between the candidate wave beam corresponding to the first cell and the time-frequency resource position of the wave beam failure recovery response to the terminal; the candidate beams comprise candidate new beams;

Optionally, the apparatus further comprises:

the first search spaces of the at least two cells are different search spaces.

Optionally, the apparatus further comprises:

the first search spaces of the at least two cells do not overlap in time.

Optionally, the method further comprises:

Optionally, the apparatus further comprises:

Optionally, the signaling comprises at least one of:

On a terminal side, an embodiment of the present application provides an information detection apparatus, including:

a determining unit, configured to determine a target cell corresponding to the first cell;

the device comprises a detection unit, a processing unit and a processing unit, wherein the detection unit is used for monitoring a beam failure recovery response of a first cell on a target cell corresponding to the first cell; the first cell is a cell in which a beam failure occurs, and the target cell corresponding to the first cell includes at least one cell in the first cell and/or at least one cell other than the first cell.

Optionally, the apparatus further comprises:

Optionally, the apparatus further comprises: receiving a mapping relation between a candidate wave beam corresponding to the first cell and a time-frequency resource position of the wave beam failure recovery response sent by a base station, and determining the time-frequency resource position of the wave beam failure recovery response according to the mapping relation; wherein the candidate beam comprises the candidate new beam.

Optionally, the apparatus further comprises:

the first search spaces of the at least two cells are different search spaces.

Optionally, the apparatus further comprises:

the first search spaces of the at least two cells do not overlap in time.

Optionally, the apparatus further comprises: transmitting candidate new beam information for the first cell to a base station;

Optionally, the apparatus further comprises:

Optionally, the signaling comprises at least one of:

On the base station side, another embodiment of the present application provides an information transmitting apparatus, which includes a memory and a processor, where the memory is configured to store program instructions, and the processor is configured to call the program instructions stored in the memory, and execute any one of the above information transmitting methods according to an obtained program.

On the terminal side, another embodiment of the present application provides an information detection apparatus, which includes a memory and a processor, wherein the memory is used for storing program instructions, and the processor is used for calling the program instructions stored in the memory and executing any one of the above information detection methods according to the obtained program.

Another embodiment of the present application provides a computer storage medium having stored thereon computer-executable instructions for causing a computer to perform any one of the methods described above.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic flowchart of an information sending method according to an embodiment of the present application;

fig. 2 is a schematic flowchart of an information detection method according to an embodiment of the present application;

fig. 3 is a schematic structural diagram of an information sending apparatus according to an embodiment of the present application;

fig. 4 is a schematic structural diagram of an information detection apparatus according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of another information transmitting apparatus provided at the base station side according to an embodiment of the present application;

fig. 6 is a schematic structural diagram of another information detection apparatus provided on the terminal side in the embodiment of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides an information sending and detecting method and device, which are used for ensuring the performance of beam failure response.

The method and the device are based on the same application concept, and because the principles of solving the problems of the method and the device are similar, the implementation of the device and the method can be mutually referred, and repeated parts are not repeated.

For example, the applicable system may be a global system for mobile communications (GSM) system, a Code Division Multiple Access (CDMA) system, a Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS) system, a long term evolution (L TE) system, a L TE Frequency Division Duplex (FDD) system, a L TE Time Division Duplex (TDD), a universal mobile system (universal mobile telecommunications system, UMTS), a universal internet Access (WiMAX) system, a WiMAX 5G system, and the like, including various microwave NR systems, WiMAX 5G systems, and UMTS systems.

In a different system, the name of the terminal device may also be different, for example, in a 5G system, the terminal device may be called a User Equipment (UE), the wireless terminal device may communicate with one or more core networks via a RAN, and the wireless terminal device may be a mobile terminal device such as a mobile phone (or a "cellular" phone) and a computer with a mobile terminal device, for example, a portable, pocket, hand-held, computer-included or vehicle-mounted mobile device that exchanges voice and/or data with a wireless access network.

The network device according to the embodiment of the present application may be a base station, which may include multiple cells, and depending on a specific application, the base station may also be referred to as an access point, or may refer to a device in an access network that communicates with a wireless terminal device through one or more sectors on an air interface, or may be named otherwise, the network device may be configured to convert a received air frame and an Internet Protocol (IP) packet into each other as a router between the wireless terminal device and the rest of the access network, where the rest of the access network may include an Internet Protocol (IP) communication network, and the network device may also coordinate attribute management of the air interface, for example, the network device according to the embodiment of the present application may be a network device (base transceiver station, BTS) in a global system for mobile communications (GSM) or a code division multiple access (code division multiple access) network, or a CDMA) in a home evolved node B (cellular) network, a base station (WCDMA) or a home evolved node B-B network (node B) in an embodiment, or a home evolved node B-evolution network (node B) network, or a wireless network, a wireless.

Various embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the display sequence of the embodiment of the present application only represents the sequence of the embodiment, and does not represent the merits of the technical solutions provided by the embodiments.

As low-frequency band resources become scarce, and millimeter wave frequency bands have more spectrum resources, which can provide larger bandwidth, and become important frequency bands for future applications of mobile communication systems. Wavelength of millimeter wave frequency bandShorter, having different propagation characteristics than the conventional low-band spectrum, such as higher propagation loss, poor reflection and diffraction properties, etc. Therefore, a larger-scale antenna array is usually adopted to form a shaped beam with a larger gain, so as to overcome the propagation loss and ensure the system coverage. For the millimeter wave antenna array, as the wavelength is shorter, the antenna array spacing and the aperture are smaller, more physical antenna arrays can be integrated in a two-dimensional antenna array with a limited size; meanwhile, because the millimeter wave antenna array has a limited size, the digital beam forming mode adopted by the low frequency band cannot be adopted due to the consideration of factors such as hardware complexity, cost overhead and power consumption, and a hybrid beam forming mode combining an analog beam and a limited digital port is usually adopted. As shown in fig. 1, the transmit-receive architecture diagram of hybrid beamforming has N at the transmit end_TRoot antenna, receiving end having N_RA plurality of antennas, each having a separate RF channel and only K digital channels, where K is less than or equal to N_TAnd N_R。

For a multi-antenna array, each antenna has an independent rf link channel but shares the same digital link channel, each rf link allows independent amplitude and phase adjustment of the transmitted signal, and the formed beam is mainly realized by phase and amplitude adjustment in the rf link, which is called analog beamforming signal. Each antenna of the all-digital beam-forming antenna array has an independent digital link channel, and the amplitude and the phase of each path of signal can be controlled at a baseband.

Analog beamforming has the following characteristics:

the signal transmitted by each antenna typically changes its phase by a phase shifter;

due to the limitation of device capability, analog beamforming is performed on the whole bandwidth, and cannot be performed separately for a partial molecular band like digital beamforming, so analog beamforming is multiplexed in a Time Division Multiplexing (TDM) manner.

Due to the above characteristics, the forming flexibility of analog beam forming is lower than that of digital beam forming, but the digital link required by the antenna array of analog beam forming is much lower than that of the antenna array of digital beam forming, so that the cost of the antenna array of analog beam is obviously reduced when the number of antennas becomes large.

For a system adopting high-frequency band transmission, a Physical Downlink Control Channel (PDCCH) of the system can adopt analog beamforming transmission to realize higher beamforming gain and larger coverage. Radio resources for downlink Control PDCCH channels are semi-statically divided into multiple Control Resource SETs (CORESET), and each CORESET contains radio resources for multiple PDCCH channels. The base station may semi-statically match one transmit beam direction for each CORESET, with different CORESETs matching different directional beams. The base station can perform dynamic switching in different CORESETs, thereby realizing the dynamic switching of the wave beams. When transmitting the PDCCH, the base station may select a CORESET in a suitable beam direction according to information of the terminal. At the receiving end, the terminal carries out blind detection in a plurality of collocated CORESETs. For each candidate CORESET, the terminal will receive using the receive beam corresponding to the CORESET transmit beam.

An important challenge facing analog beamforming for high frequency bands is that the transmission signal has large propagation loss and high probability of being blocked. For the blocked downlink control channel PDCCH, the terminal cannot accurately obtain the control information of downlink transmission, so that the receiving performance is reduced, such as reduced rate, increased scheduling delay, reduced user experience, and the like. A method for reducing the shielding probability is to configure beams in multiple directions for CORESET, so that a PDCCH channel can be transmitted in multiple directions, and the problem of unreliable links caused by shielding in a certain direction is avoided. However, the adoption of this method brings new problems: due to the fact that the blind detection capability of the terminal for the PDCCH is limited, the number of CORESETs configured to each direction of the terminal is reduced. For example, in the NR standard (Rel-15), it is limited that each terminal configures up to 3 CORESET in the same active Bandwidth Part (BWP). Theoretically, if the angle expansion of the transmission beam is wide enough, the whole cell coverage angle area can be covered, so that the problem of beam shielding does not occur. However, in order to obtain higher beamforming gain, the coverage angle of the beam is generally smaller and the beam is narrower. In consideration of the limited quantity of CORESET and the narrow beam characteristics, in the high-frequency-band millimeter wave communication, the angular coverage range of the control channel is limited, so that a coverage hole of the control channel is easily caused, and the reliable receiving of the control channel cannot be ensured.

In order to avoid such resource waste and time delay, in the NR standard, a fast and reliable Beam failure detection and recovery process is standardized, so that the network side can quickly recover the transmission process from the Beam failure, i.e., a Beam Failure Recovery (BFR) mechanism, and a specific BFR mechanism is as in the following embodiments one to three, and a specific implementation of an information transmission and detection method provided by the present application is as in the following embodiments four and five.

Embodiment one, beam failure monitoring procedure of Beam Failure Recovery (BFR) mechanism.

Since the base station may transmit the PDCCH through a plurality of downlink beams, the downlink beam failure may be defined as: the quality of each downlink control channel beam received by the terminal is lower than a specified threshold. In this case, the terminal cannot efficiently receive control information transmitted through the PDCCH channel transmitted using the beam.

Without loss of generality, assume that the base station has M beams for downlink control channel transmission, and configures a dedicated reference signal for each beam, and the terminal determines whether the downlink control channel meets the reception quality requirement by measuring the reference signals of the M beams. If the channel quality of all M beams is below the established threshold, the terminal will consider a beam failure event to occur.

The Block Error Rate (B L ER may be used as a monitoring index parameter of a beam failure, and specifically, the terminal measures a Reference Signal performance of the same beam as a downlink control channel, and infers a decoding Error probability B L ER of a PDCCH channel according to a channel quality of a measured Reference Signal, and specifically, the UE measures a Reference Signal Receiving Power (RSRP) of the Reference Signal, and infers a B L ER. of the PDCCH if a B L ER value is higher than a set threshold (e.g., B L ER is 10%) according to a mapping relation curve of the RSRP and the PDCCH B L ER, so that the beam fails.

The configuration of the reference signal for the beam failure measurement (detection) may be explicitly configured by the network through signaling to the terminal, or implicitly configured by the terminal through a beam configuration method of control signaling, which is specifically as follows:

in the explicit configuration mode, a base station configures a Reference Signal set for measuring beam quality for a terminal through signaling, where the signaling may include an identifier of a Reference Signal, and/or a type of the Reference Signal (such as a Synchronization Signal Block (SSB), a channel state information Reference Signal (CSI-RS), and/or a transmission power, and/or a resource indication of the Reference Signal, and/or a Reference Signal resource, and the like;

specifically, for CORESET related to analog beamforming Transmission, the TCI state of the CORESET includes configuration information of a reference signal, and the Quasi-co-location QC L (Quasi co-location) type of the reference signal is QC L-TypeD.

An essential characteristic of wireless mobile communication is that the radio channels of the transmitting and receiving ends have a characteristic of rapid fluctuation. Therefore, the beam quality may also hop continuously around the threshold. To avoid ping-pong effects and frequent beam failure events, a beam failure event can only be considered to have occurred if the beam measurement is below a set threshold for a sufficiently long time. Whether a beam failure event occurs may be determined by counting the number of times the beam measurement is below a threshold. Specifically, the reference signal of the downlink control channel is measured in each transmission, and when the measurement result is lower than the threshold, the counting is failed once, and the counting is successful once when the measurement result is higher than the threshold; only when the number of consecutive failures is greater than a preset value, it is determined that a beam failure event occurs.

In a second embodiment, a beam failure and candidate new beam reporting procedure of a Beam Failure Recovery (BFR) mechanism.

When the terminal measures that a beam failure event is sent, the terminal needs to report the event to the base station, and optionally, the terminal also reports candidate new beam information with beam quality meeting certain requirements. And after receiving the reported information, the base station recovers from the beam failure as soon as possible through the beam recovery process, and reselects a new beam for transmission to replace the original beam. The new beam can be used for response information transmission (such as beam failure recovery response) of the base station to the reporting failure event, and subsequent transmission of data and control information between the base station and the terminal.

The terminal determines a receiving and transmitting beam pair for a transmission link by measuring the reference signal set, and reports the candidate new beam to the network after the terminal finishes measurement, wherein the selected candidate new beam needs to meet the performance threshold requirement that RSRP exceeds a threshold value or B L ER of a corresponding PDCCH is lower than a certain threshold value.

In the beam failure measurement and recovery process, the physical random access channel PRACH channel may be used for reporting of a beam failure event and/or a candidate new beam. The PRACH channel is an uplink synchronization and information exchange channel when a terminal is used for initially accessing a network. The network can realize the functions of confirming the terminal, measuring uplink synchronization, solving competition, and the like by sending the uplink leader sequence through the PRACH. In the NR system, there may be a plurality of PRACH channels, each corresponding to one SSB (synchronization Signal block) (different SSBs transmit broadcast information using beams in different transmission directions), and the PRACH channel selected by the terminal corresponds to the SSB beam transmission direction most suitable for downlink. Therefore, when the reference signals corresponding to the candidate downlink beams and the uplink PRACH channel establish a one-to-one correspondence, the base station may obtain the candidate new beam information reported by the terminal through the detected PRACH channel. The PRACH channel may employ a contention physical layer channel or a non-contention dedicated physical layer channel. The terminal will be allocated dedicated random access channel resources and random access preamble sequences, each corresponding to the beam direction of one SSB transport block. Once the downlink beam failure event occurs and the candidate new beam is selected, the random access channel and the preamble sequence corresponding to the candidate new beam are used for transmission.

The physical uplink control channel PUCCH may also be used for reporting of beam failure events and/or candidate new beams. The PUCCH channel is used for transmitting uplink control signaling, and reports various types of uplink control signaling to the network, such as Acknowledgement/Negative Acknowledgement (ACK/NACK), scheduling request, Channel State Information (CSI), beam measurement result, and the like. A terminal may configure multiple PUCCH channel resources, each PUCCH channel resource corresponding to a different physical resource, transmit power, load capability, and load type. The PUCCH channel transmit beam is configured by the network. Compared with the PRACH, the PUCCH has better reporting capability and flexibility, and more information such as a plurality of candidate beams, beam quality and the like can be reported to the network through the PUCCH.

Embodiment three, Beam Failure Recovery (BFR) mechanism.

As described in the above embodiments, each terminal is assigned multiple CORESET for transmission of PDCCH, and each CORESET is configured with one beam transmission direction. The beams corresponding to the original CORESET are not changed in the beam recovery process. The network may configure one or more dedicated CORESET for the terminal, which we shall not refer to as CORESET _ BFR, for control signaling for beam failure recovery. After the terminal measures and reports the beam failure message, the terminal starts to monitor a Physical Downlink Control Channel (PDCCH) of the CORESET _ BFR, and assumes that the used beam is a reported candidate new beam. Corresponding to the terminal reporting process, the base station sends the PDCCH channel by using a new beam in CORESET _ BFR. When the terminal detects the PDCCH, the reported beam failure event and the candidate new beam are considered to be correctly received by the base station.

When the base station receives the report of the beam failure event and sends a beam failure recovery response message in the CORESET _ BFR, if the terminal does not receive an RRC reconfiguration message (the configuration of the original beam for monitoring the beam failure, note that the configuration can be configured through a reference signal), the CORESET _ BFR is used as another CORESET for scheduling to carry out normal communication; if the terminal receives the RRC reconfiguration message, the terminal obtains the new beam configuration of the CORESET set according to the information and stops monitoring the CORESET _ BFR.

Although the terminal reports all control channels to the base station that all control channels are in a beam failure state, the judgment is obtained based on a 10% B L ER measurement result, and the terminal still has the possibility of receiving a control signaling message on the original PDCCH.

The fourth embodiment is a beam failure response sending and detecting method.

1. The contents executed by the base station side include:

determining a beam failure recovery response of a first cell to be sent;

Specifically, there may be two cases as follows:

in case one, when a plurality of cells exist in the first cell, beam failure recovery responses of all cells in the first cell are transmitted.

In case two, when a plurality of cells exist in the first cell, only beam failure recovery responses of a part of cells are sent; the target cell may be a cell within one or more first cells or other cells. In this case it is still considered to belong to the beam failure recovery response that determines that the first cell needs to be transmitted.

Optionally, the target cell includes a first type cell, where the first type cell is a cell that sends a beam failure recovery response of multiple cells in the first cell. That is to say, the transmitting the beam failure recovery response of the first cell on the target cell corresponding to the first cell includes: the beam failure recovery responses of at least two cells are transmitted on the same target cell.

Optionally, one first cell corresponds to one or more cells for transmitting the beam failure recovery response, and the target cell is a set of cells for transmitting the beam failure recovery response corresponding to the cell for transmitting the beam failure recovery response.

For example, the first cell includes cells a, B, and C, where a cell corresponding to a cell for transmitting a beam failure recovery response is cell D, B corresponds to a cell for transmitting a beam failure recovery response is cell C, C corresponds to a cell for transmitting a beam failure recovery response is cell C, and if the base station transmits a beam failure recovery response only for cell a, the target cell is cell D; and if the base station fails to send the beam recovery response aiming at the cells A and C, the target cells are the cell D and the cell C.

Optionally, the target cell is determined according to a new candidate new beam reported by the terminal;

in a specific way, the base station configures candidate beam information for beam failure recovery for each cell needing beam failure monitoring. Each candidate beam information includes an identification of a corresponding cell for transmitting a beam failure recovery response. The base station transmits the beam failure recovery response on the cell corresponding to the cell identifier for transmitting the beam failure recovery response when transmitting the beam failure recovery response by using the candidate beam.

Optionally, for candidate new beam information reported by the first cell, the receiving terminal determines, according to the candidate new beam information, a time-frequency resource location and/or a transmission beam of the beam failure recovery response. And the candidate new beam information reported by the terminal to the first cell is used for indicating a new candidate new beam reported by the terminal to the first cell. This new candidate new beam may be a transmit beam for which the terminal considers the reception quality to be above a certain threshold;

wherein, a predefined association relation may exist between the candidate new beam and the first CORESET;

optionally, the association relationship is sent to the UE through signaling. If the UE reports a plurality of new candidate new beams, the UE may know which first CORESET uses which new candidate new beam to transmit according to an association relationship between the new candidate new beams and the first CORESET, and in this way, the terminal may determine, according to the new candidate new beams reported by the terminal, a position of a time-frequency resource and/or a received beam for monitoring a beam failure recovery response;

optionally, the candidate new beam information reported by the terminal is candidate new beam information reported by the terminal to the base station for each cell in the first cell.

Optionally, sending a mapping relationship between the candidate beam corresponding to the first cell and the time-frequency resource location of the beam failure recovery response to the terminal; the candidate beams comprise candidate new beams;

Optionally, sending configuration information of a first control resource set, CORESET, to the terminal, where the first CORESET is used for carrying a beam failure recovery response, and the first CORESETs of at least two cells are the same; the first CORESET of any cell is used for carrying the beam failure recovery response of the cell;

optionally, any cell that can perform beam failure monitoring corresponds to a first core set.

Optionally, the configuration information of the first control resource set CORESET is carried by configuration information of a first search space, where the first search space corresponds to the first CORESET (optionally, the first search space of one cell corresponds to one first CORESET; optionally, the first search spaces of multiple cells correspond to the same CORESET), where the first search space is a search space corresponding to a first physical downlink control channel PDCCH for carrying a beam failure recovery response.

Optionally, the configuration information of the first CORESET is that the base station directly configures the first CORESET corresponding to each cell for the terminal.

Optionally, the base station configures only one first core set for one cell.

In a preferred embodiment, the first search spaces of the at least two cells are different search spaces;

in a preferred embodiment, the first search spaces of the at least two cells do not overlap in time. In this way, even if the first CORESET and the transmission beam of the two cells are the same, the terminal can determine the beam failure recovery response of which cell according to the search space.

Optionally, the first CORESET of the plurality of cells is the same.

Optionally, the sending a beam failure recovery response of the first cell on a target cell corresponding to the first cell includes: and transmitting the beam failure recovery response of the same cell as the first CORESET in the first cell by using the same transmission beam. For example, cell a and cell B are both in the first cell, and the corresponding first CORESET is also CORESET a, the failure to transmit the beams of cell a and cell B on CORESET a using the same transmit beam recovers the corresponding.

Optionally, the sending a beam failure recovery response of the first cell on a target cell corresponding to the first cell includes: and acquiring the sending beams corresponding to all cells in the cell with the same first CORESET in the first cell by using the candidate new beam information reported by the terminal, and respectively sending the beam failure recovery response of all cells in the cell with the same first CORESET by using the sending beams. For example, cell a and cell B are both in the first cell, and the corresponding first CORESET is also both CORESET a, but the transmission beam corresponding to cell a is beam a, and the transmission beam corresponding to cell B is beam B, then the beam failure recovery response of cell a is transmitted on CORESET a using beam a, and the beam failure recovery response of cell B is transmitted on CORESET a using beam B.

Optionally, when the first cell includes a plurality of cells and the transmission opportunities of the beam failure recovery responses of some or all of the cells of the first cell collide, the beam failure recovery responses of the cells whose transmission opportunities of the beam failure recovery responses collide are transmitted according to the priorities of the plurality of cells.

Optionally, only the beam failure recovery response corresponding to the cell with the highest priority among the cells with conflicting transmission opportunities of the beam failure recovery response is transmitted.

Optionally, the beam failure recovery responses corresponding to a preset number of cells with the highest priority in the cells with conflicting transmission opportunities for transmitting the beam failure recovery responses are greater than or equal to 1. Optionally, the beam failure recovery response is transmitted by using a candidate new beam corresponding to a cell with the highest priority in the cells with the conflicting transmission opportunities of the beam failure recovery response.

For example, the first cell includes cells a, B, C, and D, and the transmission priority of the beam failure recovery response of each cell is a > B > C > D, so that when the transmission opportunities of cell a and cell B collide, the base station only transmits the beam failure recovery response of cell a.

Optionally, the priority is pre-agreed.

Optionally, the priority information of the cell is signaled to the terminal.

Optionally, the priority information is a priority of transmitting the beam failure recovery response when transmission opportunities of the beam failure recovery response of the cell collide.

The transmission opportunity collision may be that the first CORESET corresponding to the cells is the same, or that search spaces of PDCCHs corresponding to the cells and used for carrying the beam failure recovery response are partially or completely overlapped, or that PDCCHs used for transmitting the beam failure recovery response of the cells are partially or completely overlapped in time.

Optionally, there is an association between a cell and a time unit. Preferably, the time unit is an OFDM symbol. For example, the association between a cell and a time unit (e.g., an OFDM symbol) is predefined. The base station may transmit the beam failure recovery responses of different cells on different time units when the first CORESET of the plurality of cells is the same. For example, the base station sends the beam failure response of the first Cell on the first CORESET on the first two OFDM symbols of the downlink slot, and the base station sends the beam failure response of the second Cell on the first CORESET on the third and fourth OFDM symbols of the downlink slot. The UE assumes that the base station transmits the beam failure response of the first Scell using the new candidate beam of the first Cell on the first two OFDM symbols, and the base station transmits the beam failure response of the second Cell using the new candidate beam of the second Cell on the third and fourth OFDM symbols of the downlink slot. Accordingly, the UE receives the PDCCH at the corresponding time based on the receiving beams corresponding to the candidate new beams.

In addition, the base station may also indicate, to the terminal, target cells corresponding to the cells and used for transmitting the beam failure recovery response through signaling, and multiple cells may also correspond to the same target cell;

the above signaling may comprise at least one of:

2. The contents executed by the terminal side include:

determining a target cell corresponding to the first cell;

monitoring a beam failure recovery response of a first cell on a target cell corresponding to the first cell; the first cell (which may be one or more cells) is a cell in which a beam failure occurs, and the target cell corresponding to the first cell includes at least one of the first cells and/or at least one cell other than the first cell.

Optionally, the first cell includes a plurality of cells, but the base station generates the beam failure recovery response only for some of the cells, and therefore only the beam failure recovery responses of some of the cells in the first cell need to be monitored. In this case, the beam failure recovery response belonging to the monitoring of the first cell on the target cell corresponding to the first cell is still considered.

Optionally, the target cell includes a first type cell, where the first type cell is a cell that sends a beam failure recovery response of multiple cells in the first cell. That is to say, monitoring a beam failure recovery response of a first cell on a target cell corresponding to the first cell includes: and monitoring the wave beam failure recovery responses of a plurality of cells on the same target cell.

Optionally, when there are multiple cells in the first cell, the beam failure recovery responses of all the cells in the first cell are monitored.

Optionally, when there are multiple cells in the first cell, only beam failure recovery responses of a part of the cells are monitored. The target cell may be a cell within one or more first cells or other cells.

Optionally, the target cell is a cell corresponding to all cells in the first cell and used for transmitting the beam failure recovery response. Optionally, the terminal monitors the beam failure recovery responses of all cells in the first cell on the target cell.

Optionally, one cell in the first cells corresponds to one or more cells for transmitting the beam failure recovery response, and the target cell is a set of cells for transmitting the beam failure recovery response corresponding to the first cell that has transmitted the beam failure recovery response.

Optionally, the target cell is determined according to a new candidate new beam reported by the terminal.

In a specific way, the base station configures candidate beam information for beam failure recovery for each cell needing beam failure monitoring. Each candidate beam information includes an identification of a corresponding cell for transmitting a beam failure recovery response. The base station transmits the beam failure recovery response on the cell corresponding to the cell identifier for transmitting the beam failure recovery response when transmitting the beam failure recovery response by using one candidate beam. Accordingly, the terminal monitors the cell corresponding to the candidate beam on the cell corresponding to the cell which is identified and sent with the beam failure recovery response.

Optionally, for the first cell reporting candidate new beam information, the base station determines, according to the candidate new beam information, a time-frequency resource location and/or a transmission beam of the beam failure recovery response; and receiving the beam failure recovery response at a time-frequency resource position corresponding to the beam failure recovery response corresponding to the candidate new beam information, and/or receiving the beam failure recovery response by using a receiving beam corresponding to a transmitting beam corresponding to the candidate new beam information.

Optionally, a mapping relationship between the candidate beam corresponding to the first cell and the time-frequency resource location of the beam failure recovery response sent by the base station is received, and the time-frequency resource location of the beam failure recovery response is determined according to the mapping relationship.

Optionally, the terminal may further obtain configuration information of a first control resource set, where the configuration information is sent by the base station, and monitor a beam failure recovery response on the first CORESET, where the first CORESET is used to carry the beam failure recovery response, and the first CORESETs of at least two cells are the same; the first core set of any cell is the core set used for carrying the beam failure recovery response of the cell.

Alternatively, if the UE detects a beam failure recovery response on one CORESET, the UE considers that the beam failure responses of all cells in which the beam failure occurs corresponding to the CORESET are received.

Optionally, the base station configures only one first core set for one cell.

In an alternative embodiment, the first search spaces of the at least two cells are different search spaces.

Optionally, the first search spaces of the at least two cells do not overlap in time. In this way, even if the first CORESET and the transmission beam of the two cells are the same, the terminal can determine the beam failure recovery response of which cell according to the search space.

In an optional embodiment, the first cell includes multiple cells, and the first control resource sets CORESET of some or all of the cells are the same.

Optionally, monitoring a beam failure recovery response of the first cell on a target cell corresponding to the first cell includes: the same receive beam is used to monitor the first CORESET in the first cell for a beam failure recovery response for the same cell. For example, cell a and cell B are both in the first cell, and the corresponding first CORESET is both CORESET a, then the failure to monitor the beams of cell a and cell B on CORESET a using the same receive beam is recovered.

Optionally, the terminal may further send candidate new beam information for the first cell to the base station;

optionally, the receiving beams corresponding to the candidate new beams corresponding to each cell in the cells identical to the first CORESET, which are indicated in the candidate new beam information sent by the terminal, are used to monitor the beam failure recovery responses of the cells identical to the first CORESET, respectively. For example, cell a and cell B are both in the first cell, and the corresponding first CORESET is also both CORESET a, but the transmission beam corresponding to cell a is beam a, and the transmission beam corresponding to cell B is beam B, the beam failure recovery response of cell a is monitored on CORESET a using the reception beam corresponding to beam a, and the beam failure recovery response of cell B is transmitted on CORESET a using the reception beam corresponding to beam B.

Optionally, when the first cell includes a plurality of cells and the transmission opportunities of the beam failure recovery responses of some or all of the cells collide, the beam failure recovery responses of the cells whose transmission opportunities of the beam failure recovery responses collide are monitored according to the priorities of the plurality of cells.

Optionally, the priority is pre-agreed.

Optionally, priority information of a cell sent by the base station through signaling is acquired.

Optionally, the priority information is a priority of transmitting the beam failure recovery response when transmission opportunities of the beam failure recovery responses of the cells collide.

Optionally, if a beam failure recovery response is monitored at a transmission opportunity of a beam failure recovery response, it is considered that the beam failure recovery response corresponds to the cell with the highest priority. For example, the first cell includes cells a, B, C, and D, and the transmission priority of the beam failure recovery response of each cell is a > B > C > D. When the transmission opportunities of the cell a and the cell B conflict, if the terminal monitors the beam failure recovery response at the transmission opportunity of the beam failure recovery response of the cell a and the cell B, the terminal considers that the beam failure recovery response of the cell a is monitored;

acquiring the beam failure recovery response according to the priority of the first cell, including: and monitoring the beam failure recovery response by using the receiving beam corresponding to the candidate new beam corresponding to the cell with the highest priority in the cells with the conflicting sending opportunities of the beam failure recovery response.

if a beam failure recovery response is monitored on the sending opportunity of the conflicting beam failure recovery response, determining that the beam failure recovery response is a beam failure recovery response corresponding to a preset number of cells with the highest priority on the sending opportunity of the conflicting beam failure recovery response, wherein the preset number is greater than or equal to 1.

Optionally, there is an association between a cell and a time unit. Preferably, the time unit is an OFDM symbol. For example, the association between a cell and a time unit (e.g., an OFDM symbol) is predefined. The base station may transmit the beam failure recovery responses of different cells on different time units when the first CORESET of the plurality of cells is the same. For example, the base station sends the beam failure response of the first Cell on the first CORESET on the first two OFDM symbols of the downlink slot, and the base station sends the beam failure response of the second Cell on the first CORESET on the third and fourth OFDM symbols of the downlink slot. If the UE monitors the beam failure recovery response on the first two OFDM symbols, the UE considers the beam failure recovery response of the first Cell; and if the UE monitors the beam failure recovery response on the third OFDM symbol and the fourth OFDM symbol, the UE considers the beam failure recovery response of the second Cell. Optionally, the UE monitors the beam failure recovery response using the receive beam corresponding to the candidate new beam reported for the first Cell on the first two OFDM symbols, and monitors the beam failure recovery response using the receive beam corresponding to the candidate new beam reported for the second Cell on the third and fourth OFDM symbols.

Optionally, obtaining signaling that indicates a target cell for sending a beam failure recovery response corresponding to each cell (where multiple cells may also correspond to the same target cell) sent by the base station, and determining the target cell corresponding to the first cell according to the signaling;

the signaling comprises at least one of:

Example five determination of a target cell (for ease of description we label the target cell as Tcell).

In the first mode, for each Cell (i.e., Cell, carrier), Tcell is determined in a predefined manner. The Tcell may be a PCell or a Scell, and may be a local cell or another cell. Some possible ways to predetermine Tcell are:

the protocol agrees that TCELs corresponding to all cells are PCell;

the protocol stipulates that TCell corresponding to all cells is a Cell with a frequency point lower than a preset value (for example, the preset value is 6GHz, and at this time, the TCell corresponds to FR1 in the NR system Rel-15 standard);

the protocol provides that the TCell corresponding to all cells in a frequency band (band) is the same, and the TCell is a predefined Cell. For example, if a PCell is present, this TCell is a PCell; if no PCell is present, this TCell is the lowest frequency SCell.

And in the second mode, the base station indicates the TCell corresponding to the Cell to the UE through signaling. This signaling may be RRC signaling, and/or MAC-CE signaling, and/or DCI signaling. For example, the BFR signaling sent by the base station to the UE includes indication information of TCell; a field is added in a PRACH-ResourceDedicatedBFR, and the field is used for indicating TCell used for sending the beam failure report of the SCell; a base station configures a high-level signaling PRACH-ResourceDedicatedBFR for each Cell of UE, two fields are added in the PRACH-ResourceDedicatedBFR, one field is used for indicating the identification of the Cell, and the other field is used for indicating the identification of the Tcell reported by the failure of sending the beam of the Cell; two fields are added in an RRC signaling beamf ailurerecoveryconfig sent by a base station to a UE, one field is used to indicate an identifier of a Cell (field 1), and one field is used to indicate an identifier of a Tcell (field 2) sending a beam failure response of the Cell, and the two fields have a one-to-one correspondence relationship, that is, an nth Tcell indicated by the field 2 is a Tcell sending a beam failure recovery response of the Cell corresponding to an nth Cell indicated by the field 1, where n is greater than or equal to 1 and less than or equal to the number of scells indicated by the field 1. Optionally, the Cell is only for a secondary Cell (SCell).

Third, the BFR-RS (reference signal corresponding to candidate beam for beam failure recovery) has an association relationship with the TCell. If one Cell corresponds to one BFR-RS, the UE/base station determines the TCell of the Cell transmitting/receiving beam failure recovery response according to the incidence relation between the BFR-RS and the TCell; and if one Cell corresponds to a plurality of BFR-RSs, the UE/base station determines the TCell of the Cell sending/receiving beam failure recovery response according to the BFR-RSs corresponding to the candidate new beam to be reported and the incidence relation between the BFR-RSs and the TCell. An associated Cell may be defined in the protocol for a BFR-RS, and if the BFR-RS is a candidate reference signal reported by the UE for beam failure recovery, the UE/base station transmits/receives a beam failure recovery response on the associated Cell. Preferably, the association relationship between the BFR-RS and the TCell may be indicated to the UE by the base station through signaling, which is preferably RRC signaling. And if the correlation between the BFR-RS and the TCell is suboptimal, indicating the correlation between the BFR-RS and the TCell to the UE through the MAC-CE or DCI.

In mode three, TCell depends on the candidate new beam selected by the UE for beam failure recovery. The TCell may be a different Cell than the Cell in which the BFR-RS resides. For example, for SCell 1, the BFR-RS selected by the UE is a reference signal sent on SCell 2, but the TCell corresponding to the BFR-RS is SCell3, and the UE sends a beam failure report on SCell 1 on SCell 3.

The mode is flexible, and the base station can select a better TCell for each BFR-RS according to the conditions of load, frequency point, channel quality and the like of each carrier.

And in a fourth mode, the TCell is the Cell where the candidate BFR-RS selected by the UE is located. If one Scell only corresponds to one BFR-RS, the TCell is the Cell where the BFR-RS is located; and if one Scell corresponds to a plurality of BFR-RSs, the TCell determines the Cell where the BFR-RS corresponding to the candidate new beam to be reported is located.

The method requires that the TCell is a Cell including both U L and D L configurations, i.e. the TCell can perform both uplink and downlink transmissions.

And fifthly, configuring the TCell for sending the beam failure response corresponding to the CORESET-BFR when the base station configures the CORESET-BFR for the UE.

In specific implementation, the fusion scheme of the first mode to the fifth mode can be adopted. For example, the method one is adopted for some scells, and the method two or the method three is adopted for other scells. For another example, a predefined mode is adopted to determine the TCell for the SCell with the predefined TCell, and a mode two determination mode is adopted for the SCell without the predefined TCell; and determining the TCell by adopting a predefined mode for the SCell with the predefined TCell, and determining the SCell without the predefined TCell by adopting a mode three.

In summary, at the base station side, an embodiment of the present application provides an information sending method, with reference to fig. 1, including:

s101, determining that a beam failure recovery response of a first cell needs to be sent;

s102, sending a beam failure recovery response of a first cell on a target cell corresponding to the first cell;

Optionally, the target cell includes a first type cell, where the first type cell is a cell that sends a beam failure recovery response of multiple cells in the first cell. Optionally, a beam failure recovery response of multiple cells is sent in the first type of cell.

Optionally, the method further comprises:

the first search spaces of the at least two cells are different search spaces.

Optionally, the method further comprises:

the first search spaces of the at least two cells do not overlap in time.

Optionally, the method further comprises:

Optionally, the signaling comprises at least one of:

On the terminal side, an embodiment of the present application provides an information detection method, with reference to fig. 2, including:

s201, determining a target cell corresponding to a first cell;

s202, monitoring a beam failure recovery response of a first cell on a target cell corresponding to the first cell; the first cell is a cell in which a beam failure occurs, and the target cell corresponding to the first cell includes at least one cell in the first cell and/or at least one cell other than the first cell.

Optionally, the method further comprises:

the first search spaces of the at least two cells are different search spaces.

Optionally, the method further comprises:

the first search spaces of the at least two cells do not overlap in time.

Optionally, the method further comprises:

Optionally, the signaling comprises at least one of:

For specific implementation of the information processing method provided by the base station side and the terminal side in the embodiment of the present application, reference may be made to embodiment four.

Correspondingly, on the base station side, an embodiment of the present application provides an information transmission apparatus, see fig. 3, including:

a determining unit 11, configured to determine that a beam failure recovery response of the first cell needs to be sent;

a transmission unit 12, configured to send a beam failure recovery response of a first cell on a target cell corresponding to the first cell;

Optionally, the transmission unit 12 is further configured to receive candidate new beam information reported by the terminal to the first cell;

the determining unit 11 is further configured to determine, according to the candidate new beam information, a time-frequency resource location and/or a transmission beam of the beam failure recovery response.

Optionally, the transmission unit 12 is further configured to send a mapping relationship between the candidate beam corresponding to the first cell and the time-frequency resource location of the beam failure recovery response to the terminal; the candidate beams comprise candidate new beams;

Optionally, the transmission unit 12 is further configured to send configuration information of a first control resource set, where the first core is a core used for carrying a beam failure recovery response, and the first core of at least two cells is the same; the first core set of any cell is the core set used for carrying the beam failure recovery response of the cell.

Optionally, the first search spaces of the at least two cells are different search spaces.

Optionally, the first search spaces of the at least two cells do not overlap in time.

Optionally, the transmitting unit 12 is further configured to, when the first cell includes multiple cells and transmission opportunities of beam failure recovery responses of some or all cells of the first cell collide, transmit the beam failure recovery responses of the cells whose transmission opportunities of the beam failure recovery responses collide according to priorities of the multiple cells.

Optionally, the transmission unit 12 is further configured to indicate, to the terminal, cells corresponding to the cells and used for sending the beam failure recovery response through signaling.

Optionally, the signaling comprises at least one of:

the association of the candidate beam of a cell with the cell used to transmit the beam failure recovery response of that cell. On the terminal side, an embodiment of the present application provides an information detection apparatus, see fig. 4, including:

a determining unit 21, configured to determine a target cell corresponding to the first cell;

a detecting unit 22, configured to monitor a beam failure recovery response of a first cell on a target cell corresponding to the first cell; the first cell is a cell in which a beam failure occurs, and the target cell corresponding to the first cell includes at least one cell in the first cell and/or at least one cell other than the first cell.

Optionally, the detecting unit 22 is further configured to monitor a beam failure recovery response of at least one cell of the first cell on the same target cell.

Optionally, the determining unit 22 is further configured to:

Optionally, the determining unit 21 is further configured to: receiving a mapping relation between a candidate wave beam corresponding to the first cell and a time-frequency resource position of the wave beam failure recovery response sent by a base station, and determining the time-frequency resource position of the wave beam failure recovery response according to the mapping relation; wherein the candidate beam comprises the candidate new beam.

Optionally, the detection unit 22 is further configured to:

Optionally, the detection unit 22 is further configured to: transmitting candidate new beam information for the first cell to a base station;

Optionally, the detection unit 22 is further configured to:

Optionally, the detecting unit 22 is further configured to send a candidate new beam corresponding to the first cell to the base station;

Optionally, the detecting unit 22 is further configured to acquire the beam failure recovery response according to the priority of the first cell, and includes:

Optionally, the detection unit 22 is further configured to:

Optionally, the signaling comprises at least one of:

It should be noted that the division of the unit in the embodiment of the present application is schematic, and is only a logic function division, and there may be another division manner in actual implementation. In addition, functional units in the embodiments of the present application may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present application may be substantially implemented or contributed by the prior art, or all or part of the technical solution may be embodied in a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, a network device, or the like) or a processor (processor) to execute all or part of the steps of the method according to the embodiments of the present application. And the aforementioned storage medium includes: various media capable of storing program codes, such as a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk.

Embodiments of the present application provide a computing device, which may be specifically a desktop computer, a portable computer, a smart phone, a tablet computer, a Personal Digital Assistant (PDA), etc. the computing device may include a Central Processing Unit (CPU), a memory, an input/output device, etc., the input device may include a keyboard, a mouse, a touch screen, etc., and the output device may include a Display device, such as a liquid crystal Display (L liquid crystal Display, L CD), a Cathode Ray Tube (CRT), etc.

The memory may include Read Only Memory (ROM) and Random Access Memory (RAM), and provides the processor with program instructions and data stored in the memory. In the embodiments of the present application, the memory may be used for storing a program of any one of the methods provided by the embodiments of the present application.

The processor is used for executing any one of the methods provided by the embodiment of the application according to the obtained program instructions by calling the program instructions stored in the memory.

On the base station side, an embodiment of the present application provides an information transmitting apparatus, see fig. 5, including:

the processor 500, which is used to read the program in the memory 520, executes the following processes:

determining a beam failure recovery response of a first cell to be sent;

the processor 500 transmits a beam failure recovery response of a first cell on a target cell corresponding to the first cell through the transceiver 510;

Optionally, the processor 500 receives, through the transceiver 510, candidate new beam information reported by the terminal for the first cell, and determines, according to the candidate new beam information, a time-frequency resource location and/or a transmission beam of the beam failure recovery response.

Optionally, the processor 500 sends, through the transceiver 510, a mapping relationship between the candidate beam corresponding to the first cell and the time-frequency resource location of the beam failure recovery response to the terminal; the candidate beams comprise candidate new beams;

Optionally, the processor 500 sends configuration information of a first control resource set, CORESET, to the terminal through the transceiver 510, where the first CORESET is used to carry a beam failure recovery response, and the first CORESETs of at least two cells are the same; the first core set of any cell is the core set used for carrying the beam failure recovery response of the cell.

Optionally, the processor 500 sends a beam failure recovery response of the first cell on a target cell corresponding to the first cell through the transceiver 510, including: and transmitting the beam failure recovery response of the same cell as the first CORESET in the first cell by using the same transmission beam.

Optionally, the processor 500 receives, through the transceiver 510, candidate new beam information reported by the terminal for the first cell;

Optionally, the processor 500 indicates, to the terminal, cells corresponding to the cells and used for transmitting the beam failure recovery response through signaling.

Optionally, the signaling comprises at least one of:

A transceiver 510 for receiving and transmitting data under the control of the processor 500.

Wherein in fig. 5, the bus architecture may include any number of interconnected buses and bridges, with one or more processors, represented by processor 500, and various circuits, represented by memory 520, being linked together. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 510 may be a number of elements, including a transmitter and a transceiver, providing a means for communicating with various other apparatus over a transmission medium. The processor 500 is responsible for managing the bus architecture and general processing, and the memory 520 may store data used by the processor 500 in performing operations.

The processor 500 may be a Central Processing Unit (CPU), an Application Specific Integrated Circuit (ASIC), a Field Programmable Gate Array (FPGA), or a Complex Programmable logic Device (CP L D).

On the terminal side, an embodiment of the present application provides an information detection apparatus, see fig. 6, including:

the processor 600, which is used to read the program in the memory 620, executes the following processes:

determining a target cell corresponding to the first cell;

Optionally, the processor 600 monitors at least one cell of the first cell for a beam failure recovery response on the same target cell.

Optionally, the processor 600 reports information of the candidate new beam to the first cell, so that the base station determines a time-frequency resource location and/or a transmission beam of the beam failure recovery response according to the information of the candidate new beam; and receiving the beam failure recovery response at a time-frequency resource position corresponding to the beam failure recovery response corresponding to the candidate new beam information, and/or receiving the beam failure recovery response by using a receiving beam corresponding to a transmitting beam corresponding to the candidate new beam information.

Optionally, the processor 600 receives, through the transceiver 610, a mapping relationship between a candidate beam corresponding to the first cell and a time-frequency resource location of the beam failure recovery response, which is sent by the base station, and determines the time-frequency resource location of the beam failure recovery response according to the mapping relationship; wherein the candidate beam comprises the candidate new beam.

Optionally, the processor 600 obtains configuration information of a first control resource set, CORESET, sent by the base station, and monitors a beam failure recovery response on the first CORESET, where the first CORESET is used for carrying the beam failure recovery response, and the first CORESETs of at least two cells are the same; the first core set of any cell is the core set used for carrying the beam failure recovery response of the cell.

Optionally, the processor 600 monitors a beam failure recovery response of a first cell on a target cell corresponding to the first cell, including: the same receive beam is used to monitor the first CORESET in the first cell for a beam failure recovery response for the same cell.

Optionally, the processor 600 sends candidate new beam information for the first cell to the base station through the transceiver 610, and monitors a beam failure recovery response of the first cell on a target cell corresponding to the first cell, including: and respectively monitoring the beam failure recovery response of the cell with the same first CORESET by using the receiving beam corresponding to the transmitting beam corresponding to each cell in the cell with the same first CORESET indicated in the candidate new beam information, wherein the first search space is a search space corresponding to a first Physical Downlink Control Channel (PDCCH) for carrying the beam failure recovery response.

Optionally, the processor 600 sends the candidate new beam corresponding to the first cell to the base station through the transceiver 610;

Optionally, the processor 600 obtains a signaling, which is sent by the base station and indicates a target cell corresponding to each cell and used for sending the beam failure recovery response, and determines the target cell corresponding to the first cell according to the signaling.

Optionally, the signaling comprises at least one of:

A transceiver 610 for receiving and transmitting data under the control of the processor 600.

Where in fig. 6, the bus architecture may include any number of interconnected buses and bridges, with various circuits being linked together, particularly one or more processors represented by processor 600 and memory represented by memory 620. The bus architecture may also link together various other circuits such as peripherals, voltage regulators, power management circuits, and the like, which are well known in the art, and therefore, will not be described any further herein. The bus interface provides an interface. The transceiver 610 may be a number of elements including a transmitter and a receiver that provide a means for communicating with various other apparatus over a transmission medium. For different user devices, the user interface 630 may also be an interface capable of interfacing with a desired device externally, including but not limited to a keypad, display, speaker, microphone, joystick, etc.

The processor 600 is responsible for managing the bus architecture and general processing, and the memory 620 may store data used by the processor 600 in performing operations.

Alternatively, the processor 600 may be a CPU (central processing unit), an ASIC (Application specific integrated Circuit), an FPGA (Field Programmable Gate Array), or a CP L D (Complex Programmable L organic Device).

Embodiments of the present application provide a computer storage medium for storing computer program instructions for an apparatus provided in the embodiments of the present application, which includes a program for executing any one of the methods provided in the embodiments of the present application.

The computer storage media may be any available media or data storage device that can be accessed by a computer, including but not limited to magnetic memory (e.g., floppy disks, hard disks, magnetic tape, magneto-optical disks (MOs), etc.), optical memory (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor memory (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND F L ASH), Solid State Disks (SSDs)), etc.

The method provided by the embodiment of the application can be applied to terminal equipment and also can be applied to network equipment.

The Terminal device may also be referred to as a User Equipment (User Equipment, abbreviated as "UE"), a Mobile Station (Mobile Station, abbreviated as "MS"), a Mobile Terminal (Mobile Terminal), or the like, and optionally, the Terminal may have a capability of communicating with one or more core networks through a Radio Access Network (RAN), for example, the Terminal may be a Mobile phone (or referred to as a "cellular" phone), a computer with Mobile property, or the like, and for example, the Terminal may also be a portable, pocket, hand-held, computer-built-in, or vehicle-mounted Mobile device.

The base Station may also coordinate management of attributes for the air interface.A base Station may be, for example, a base Station in GSM or CDMA (BTS), a base Station in WCDMA (NodeB), an evolved Node B in L TE (NodeB or eNB or e-NodeB), or a gNB in a 5G system.

The above method process flow may be implemented by a software program, which may be stored in a storage medium, and when the stored software program is called, the above method steps are performed.

In summary, the BFR mechanism of the conventional NR system can only be performed on the primary cell PCell, and there is no mechanism for sending and receiving a beam failure response on the secondary cell Scell. If the base station and the UE do not understand the transmission beam for transmitting the beam failure response of each Cell consistently, the UE may not receive the beam failure response correctly, thereby affecting the beam failure recovery process. The application provides a method for transmitting and receiving beam failure response, so that a base station and UE can transmit and receive beam failure response in a more flexible mode, and the performance of beam failure response is ensured.

Therefore, the embodiment of the present application provides a BFR mechanism on a cell to ensure that the beam failure recovery of the cell can be performed in various scenarios;

based on the BFR mechanism, the present application provides a method for transmitting and receiving beam failure responses, so that a base station and a UE can transmit and receive beam failure responses using the same assumption, thereby ensuring the performance of beam failure responses.

As will be appreciated by one skilled in the art, embodiments of the present application may be provided as a method, system, or computer program product. Accordingly, the present application may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present application may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, optical storage, and the like) having computer-usable program code embodied therein.

The present application is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the application. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.

These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.

It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.

Claims

1. An information sending method, characterized in that the method comprises:

determining a beam failure recovery response of a first cell to be sent;

2. The method of claim 1, wherein the target cell comprises a first type of cell, and wherein the first type of cell is a cell that transmits beam failure recovery responses of a plurality of cells in the first cell.

3. The method of claim 1, further comprising: and the receiving terminal determines the time-frequency resource position and/or the sending beam of the beam failure recovery response according to the candidate new beam information for the candidate new beam information reported by the first cell.

4. The method of claim 3, further comprising: sending the mapping relation between the candidate wave beam corresponding to the first cell and the time-frequency resource position of the wave beam failure recovery response to the terminal; the candidate beams comprise candidate new beams;

5. The method of any one of claims 1 to 4, further comprising:

6. The method of claim 5,

the configuration information of the first control resource set CORESET is carried by configuration information of a first search space, the first search space corresponds to the first CORESET, and the first search space is a search space corresponding to a first physical downlink control channel PDCCH for carrying a beam failure recovery response.

7. The method of claim 6, further comprising:

the first search spaces of the at least two cells are different search spaces.

8. The method of claim 7, further comprising:

the first search spaces of the at least two cells do not overlap in time.

9. The method according to any one of claims 5 to 8,

sending a beam failure recovery response of a first cell on a target cell corresponding to the first cell, including: and transmitting the beam failure recovery response of the same cell as the first CORESET in the first cell by using the same transmission beam.

10. The method of any one of claims 1 to 8, further comprising:

receiving candidate new beam information reported by the terminal for the first cell,

11. The method of any one of claims 1 to 9, further comprising:

12. The method of claim 11, wherein transmitting the beam failure recovery response according to the priorities of the plurality of cells comprises:

13. The method of any one of claims 1 to 12, further comprising:

14. The method of claim 13, wherein the signaling comprises at least one of:

15. An information detection method, comprising:

determining a target cell corresponding to the first cell;

16. The method of claim 15, wherein the beam failure recovery response of at least one cell of the first cell is monitored on the same target cell.

17. The method of claim 15, further comprising:

for the first cell reporting the candidate new beam information, the base station determines the time-frequency resource position and/or the sending beam of the beam failure recovery response according to the candidate new beam information; and

and receiving the beam failure recovery response at a time-frequency resource position corresponding to the beam failure recovery response corresponding to the candidate new beam information, and/or receiving the beam failure recovery response by using a receiving beam corresponding to a transmitting beam corresponding to the candidate new beam information.

18. The method of claim 17, further comprising: receiving a mapping relation between a candidate wave beam corresponding to the first cell and a time-frequency resource position of the wave beam failure recovery response sent by a base station, and determining the time-frequency resource position of the wave beam failure recovery response according to the mapping relation; wherein the candidate beam comprises the candidate new beam.

19. The method of any one of claims 15 to 18, further comprising:

20. The method of claim 19, wherein:

configuration information of the first control resource set CORESET is carried by configuration information of first search spaces, one first search space corresponds to one first CORESET, and the first search space is a search space corresponding to a first physical downlink control channel PDCCH for carrying a beam failure recovery response.

21. The method of claim 20, further comprising:

the first search spaces of the at least two cells are different search spaces.

22. The method of claim 21, further comprising:

the first search spaces of the at least two cells do not overlap in time.

23. The method of any one of claims 19 to 22, wherein monitoring the first cell for a beam failure recovery response on a target cell corresponding to the first cell comprises: the same receive beam is used to monitor the first CORESET in the first cell for a beam failure recovery response for the same cell.

24. The method of any one of claims 15 to 22, further comprising: transmitting candidate new beam information for the first cell to a base station,

25. The method of any one of claims 15 to 24, further comprising:

26. The method of claim 25, further comprising:

sending a candidate new beam corresponding to the first cell to the base station;

27. The method of claim 25 or 26, wherein obtaining the beam failure recovery response according to the priority of the first cell comprises:

28. The method of any one of claims 15 to 27, further comprising:

29. The method of claim 28, wherein the signaling comprises at least one of:

30. An information transmission apparatus, characterized by comprising:

31. The apparatus of claim 30, further comprising:

and the receiving terminal determines the time-frequency resource position and/or the sending beam of the beam failure recovery response according to the candidate new beam information for the candidate new beam information reported by the first cell.

32. The apparatus of any one of claims 30 and 31, further comprising:

33. The apparatus of claim 30, further comprising:

the first search spaces of the at least two cells are different search spaces.

34. The apparatus according to any one of claims 32 and 33,

35. The apparatus of any one of claims 30 to 34, further comprising:

36. An information detecting apparatus, characterized in that the apparatus comprises:

37. The apparatus of claim 36, further comprising:

38. The apparatus of any one of claims 36 and 37, further comprising:

39. The apparatus of claim 38, further comprising:

the first search spaces of the at least two cells are different search spaces.

40. The apparatus of any one of claims 38 and 39, wherein monitoring a beam failure recovery response of a first cell on a target cell corresponding to the first cell comprises: the same receive beam is used to monitor the first CORESET in the first cell for a beam failure recovery response for the same cell.

41. The apparatus of any one of claims 36 to 40, further comprising:

42. An information transmission apparatus, comprising:

a memory for storing program instructions;

a processor for calling the program instructions stored in the memory and executing according to the obtained program:

determining a beam failure recovery response of a first cell to be sent;

43. An information detecting apparatus, characterized by comprising:

a memory for storing program instructions;

determining a target cell corresponding to the first cell;

44. A computer storage medium having stored thereon computer-executable instructions for causing a computer to perform the method of any one of claims 1 to 29.