RU2788392C1 - Method and apparatus for informing of beam failure and data storage medium - Google Patents

Abstract

FIELD: wireless communication.

SUBSTANCE: technical result is achieved due to the fact that, when the terminal detects a beam failure in the target secondary service cell, the terminal transmits an uplink scheduling request or a random access request to the base station in order to inform the base station of a beam failure. The terminal receives resource configuration information from the base station, configured to indicate the physical uplink shared channel (PUSCH) resource for the terminal in order to transmit a first signalling of the media access control (MAC) control element (CE). The terminal transmits the first MAC CE signalling to the base station, including the beam failure indication information in order to indicate that the target secondary service cell experienced a beam failure.

EFFECT: increase in the uplink resource usage rate.

12 cl, 7 dwg

Description

CROSS-REFERENCE TO RELATED APPLICATION

This application is the national phase international application PCT/CN2019/084363 filed April 25, 2019, the contents of which are hereby incorporated by reference in their entirety.

FIELD OF TECHNOLOGY

[0001] Embodiments of the present invention relate to the field of communication technology and, in particular, to a method, apparatus and data carrier for reporting a beam failure.

BACKGROUND OF THE INVENTION

[0002] Base stations and terminals in 5G (5th generation mobile communication technology) NR (New Radio) systems can use beams to transmit and receive information. For example, the base station may transmit the downlink control information of a Physical Downlink Control Channel (PDCCH) to the terminal via a beam.

[0003] When the terminal is moved or the direction of the base station antenna is changed, there may be a problem of failure of the beam configured by the base station for the terminal to receive downlink control information. Currently, communication standards define a set of reference signals RS (RS, Reference Signal) for beam failure detection. When the terminal detects that the channel measurement parameters corresponding to all RSs in the RS set are below the first threshold, the terminal determines that a beam failure has occurred.

[0004] At this time, the terminal can determine if there is an RS with a Layer1-Reference Signal Received Power (L1-RSRP) that exceeds a second threshold in the RS set to determine possible beams based on the RS set configured base station to determine possible beams. If there is such an RS, the terminal transmits the random access preamble corresponding to the RS via the random access time-frequency resource corresponding to the RS. In this case, it implicitly informs the base station that a beam failure has occurred in the terminal and finds a possible beam. The terminal then detects a response to the beam failure request from the base station and waits to recover from the beam failure.

[0005] Currently, the reporting process and the recovery process are only defined when the terminal has a beam failure in the primary cell (PCell, Primary Cell).

SUMMARY OF THE INVENTION

[0006] Embodiments of the invention provide a method, apparatus, and storage medium for reporting a beam failure. Technical solutions may be as follows.

[0007] According to a first aspect of embodiments of the invention, a method for reporting a beam failure is provided.

[0008] The method includes determining, by the terminal, that a target secondary serving cell of the n accessed secondary serving cells has a beam failure, where n is a positive integer.

[0009] The method also includes transmitting, by the terminal, a first Medium Access Control (MAC) control element (CE) signaling to the base station, wherein the first CE MAC signaling includes beam failure indication information to indicate that the target secondary serving cell has a beam failure.

[0010] Optionally, the beam failure indication information is represented by m-bit codewords, where the n-bit codewords in the m-bit codewords and n secondary serving cells have a one-to-one correspondence, where m is an integer greater than or equal to n.

[0011] The ith codeword bit in the n-bit codewords is configured to indicate whether the ith secondary serving cell of the n secondary serving cells has a beam failure, where i is a positive integer less than or equal to n.

и

представляет округление в большую сторону.[0012] Optionally, the beam failure indication information is represented by k-bit codewords, where

and

represents rounding up.

[0013] The indicated k-bit codewords are the identification information of the target secondary serving cell.

[0014] Optionally, the first MAC CE signaling also includes target beam indication information configured to indicate a target beam selected from p possible beams to recover from a beam failure, where p is an integer greater than 1.

[0015] Optionally, the method may include the following.

[0016] The method also includes transmitting, by the terminal, a second MAC CE signaling to the base station. The second MAC CE signaling includes target beam indication information configured to indicate a target beam selected from p possible beams to recover from a beam failure, where p is an integer greater than 1.

[0017] Optionally, the target beam indication information is represented by q-bit codewords, wherein the p-bit codewords in the q-bit codewords and the p possible beams have a one-to-one correspondence, where q is an integer greater than or equal to p.

[0018] The j-th codeword bit in the p-bit codewords is configured to indicate that the j-th possible path out of the p possible paths is selected as the target path, where j is a positive integer less than or equal to p.

и

представляет округление в большую сторону.[0019] Optionally, the target beam indication information is represented by r-bit codewords, where

and

represents rounding up.

[0020] The indicated r-bit codewords are the identification information of the target beam.

[0021] Optionally, the p candidate beams are beams configured by the base station via radio resource control (RRC) signaling,

[0022] or

[0023] The p candidate beams are the beams activated by MAC signaling from the plurality of beams configured by the base station through RRC signaling.

[0024] Optionally, the method may include the following.

[0025] The method also includes transmitting, by the terminal, an uplink scheduling request or a random access request to a base station, wherein the uplink scheduling request or random access request is configured to notify the base station of the occurrence of a terminal beam failure.

[0026] The method also includes receiving, by the terminal, resource configuration information from the base station, wherein the resource configuration information is configured to indicate a physical uplink shared channel (PUSCH) resource for the terminal to transmit the first MAC CE signaling.

[0027] Optionally, the first MAC CE signaling is transmitted over a periodic physical uplink common channel (PUSCH) resource configured by the base station for the terminal.

[0028] Optionally, the PUSCH resource is a resource in the target secondary serving cell,

[0029] or the PUSCH resource is a resource in the primary serving cell accessed by the terminal,

[0030] or the PUSCH resource is a resource in the primary secondary serving cell of n secondary serving cells,

[0031] or the PUSCH resource is a resource in other secondary serving cells of the n secondary serving cells, except for the target secondary serving cell.

[0032] According to a second aspect of embodiments of the invention, a device is provided for reporting a beam failure to a terminal. The apparatus comprises a target cell determination module and a first signaling transmission module.

[0033] The target cell determination module is configured to determine that the target secondary serving cell of the n accessed secondary serving cells has a beam failure, where n is a positive integer.

[0034] The first signaling transmission module is configured to transmit the first medium access control (MAC) control element (CE) signaling to the base station, wherein the first CE MAC signaling includes beam failure indication information to indicate that the target secondary serving cell has beam failure.

[0035] Optionally, the beam failure indication information is represented by m-bit codewords, where the n-bit codewords in the m-bit codewords and n secondary serving cells have a one-to-one correspondence, where m is an integer greater than or equal to n.

[0036] The ith bit of the codeword in the n-bit codewords is configured to indicate whether the ith secondary serving cell of the n secondary serving cells has a beam failure, where i is a positive integer less than or equal to n.

и

представляет округление в большую сторону.[0037] Optionally, the beam failure indication information is represented by k-bit codewords, where

and

represents rounding up.

[0038] These k-bit codewords are the identification information of the target secondary serving cell.

[0039] Optionally, the first MAC CE signaling also includes target beam indication information configured to indicate a target beam selected from p possible beams to recover from a beam failure, where p is an integer greater than 1.

[0040] Optionally, the device also includes a second signaling module.

[0041] The second signaling transmission module is configured to transmit the second MAC CE signaling to the base station, wherein the second MAC CE signaling includes target beam indication information configured to indicate a target beam selected from the p possible beams for beam failure recovery, where p is an integer greater than 1.

[0042] Optionally, the target beam indication information is represented by q-bit codewords, wherein the p-bit codewords in the q-bit codewords and the p possible beams have a one-to-one correspondence, where q is an integer greater than or equal to p.

[0043] The j-th codeword bit in the p-bit codewords is configured to indicate that the j-th candidate path among the p possible paths is selected as the target path, where j is a positive integer less than or equal to p.

и

представляет округление в большую сторону.[0044] Optionally, the target beam indication information is represented by r-bit codewords, where

and

represents rounding up.

[0045] The indicated r-bit codewords represent the identification information of the target beam.

[0046] Optionally, the p possible beams are the beams configured by the base station through radio resource control (RRC) signaling,

[0047] or

[0048] The p candidate beams are the beams activated by MAC signaling from the plurality of beams configured by the base station through RRC signaling.

[0049] Optionally, the device also includes a request transmission module and a configuration information receiving module.

[0050] The request transmission module is configured to transmit an uplink scheduling request or a random access request to a base station, wherein the uplink scheduling request or random access request is configured to notify the base station of the occurrence of a terminal beam failure.

[0051] The configuration information receiving module is configured to receive resource configuration information from the base station, wherein the resource configuration information is configured to indicate a physical uplink common channel (PUSCH) resource for the terminal to transmit the first MAC CE signaling.

[0052] Optionally, the first MAC CE signaling is transmitted over a periodic physical uplink common channel (PUSCH) resource configured by the base station for the terminal.

[0053] Optionally, the PUSCH resource is a resource in the target secondary serving cell,

[0054] or the PUSCH resource is a resource in the primary serving cell accessed by the terminal,

[0055] or the PUSCH resource is a resource in a primary secondary serving cell of n secondary serving cells,

[0056] or the PUSCH resource is a resource in other secondary serving cells of the n secondary serving cells, except for the target secondary serving cell.

[0057] According to a third aspect of embodiments of the invention, a device is provided for reporting a beam failure to a terminal.

[0058] The device includes a processor.

[0059] The device includes a memory for storing instructions executable by the processor.

[0060] The processor is configured as follows.

[0061] The processor is configured to determine that a target secondary serving cell of the n accessed secondary serving cells has a beam failure, where n is a positive integer.

[0062] The processor is configured to transmit a first Medium Access Control (MAC) control element (CE) signaling to the base station, wherein the first MAC CE signaling includes beam failure indication information to indicate that the target secondary serving cell has a beam failure.

[0063] According to a fourth aspect of embodiments of the invention, a computer-readable storage medium is provided. The computer-readable storage medium stores instructions which, when executed by the processor, execute the beam failure reporting method according to the first aspect of the invention.

[0064] The technical solutions presented in the embodiments of the invention may provide the following advantages.

[0065] When the terminal determines that the target secondary serving cell of the plurality of accessed secondary serving cells has a beam failure, it transmits a MAC CE signaling containing beam failure indication information to the base station to notify the base station of the target secondary serving cell with beam failure. Therefore, a solution is provided for the terminal to report the occurrence of a beam failure in the secondary serving cell, which makes it possible to report the beam failure state of the secondary serving cell.

[0066] It is to be understood that both the foregoing general description and the following detailed description are illustrative and explanatory and do not limit the invention.

BRIEF DESCRIPTION OF THE DRAWINGS

[0067] The accompanying drawings, which are incorporated in and form a part of this specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.

[0068] FIG. 1 is a schematic diagram illustrating a network architecture according to an exemplary embodiment of the invention.

[0069] FIG. 2 is a block diagram illustrating a beam failure reporting method according to an exemplary embodiment of the invention.

[0070] FIG. 3 is a block diagram illustrating a beam failure reporting method according to another embodiment of the invention.

[0071] FIG. 4 is a block diagram of a device for reporting a beam failure according to an exemplary embodiment of the invention.

[0072] FIG. 5 is a block diagram of a device for reporting a beam failure according to another embodiment of the invention.

[0073] FIG. 6 is a block diagram of a terminal according to an exemplary embodiment of the invention.

[0074] FIG. 7 is a block diagram of a base station according to an exemplary embodiment of the invention.

DETAILED DESCRIPTION OF THE INVENTION

[0075] Next, the exemplary embodiments of the invention illustrated in the accompanying drawings will be discussed in detail. The following description refers to the accompanying drawings, with the same numbers in different drawings represent the same or similar elements, unless otherwise indicated. The implementations set forth in the following description of exemplary embodiments of the invention do not represent all implementations of the invention. Instead, they are merely examples of devices and methods according to aspects related to the invention as set forth in the appended claims.

[0076] The network architectures and service scenarios described in the embodiments of the invention may be intended to more clearly illustrate the technical solutions presented in the embodiments of the invention and do not limit the invention. Those skilled in the art will appreciate that the technical solutions presented in the embodiments of the invention are equally applicable to similar technical problems as network architectures evolve and new service scenarios emerge.

[0077] FIG. 1 is a schematic diagram illustrating a network architecture according to an exemplary embodiment of the invention. The network architecture may include one or more base stations 110 and one or more terminals 120.

[0078] Base station 110 is located in an access network. The access network in a 5G NR system may be referred to as a new generation radio access network (NG-RAN, New Generation Radio Access Network). Base station 110 and terminal 120 may communicate with each other using a specific air interface technology, such as cellular technology.

[0079] Base station 110 may be a device located in an access network and providing a wireless communication function to terminal 120. Base stations 110 may include various forms of macro base stations, micro base stations, relay stations, access points, and the like. In systems using different wireless access technologies, devices equipped with base station functions may have different names. For example, in a 5G NR system, such a device may be called gNodeB or gNB. The name "base station" may change due to the development of communication technologies. For ease of description, in the embodiments of the invention, the aforementioned device that provides the wireless communication function for terminal 120 is referred to as a base station. The base station 110 may also be an on-board device that is suitable for vehicle-to-vehicle communication on the Internet of Vehicles. In vehicle-to-vehicle communication, all channels or signaling according to the invention are channels or signaling suitable for sidelink.

[0080] There may be a plurality of terminals 120. One or more terminals 120 may be located in a cell controlled by each base station 110. Terminals 120 may include portable devices, on-board devices, wearable devices, and computing devices with a wireless communication function, or other data processing devices connected to a wireless modem, as well as various forms of user equipment (UE, User Equipment), mobile station (MS, Mobile Station), terminal devices, etc. For ease of description, these devices are collectively referred to as terminals in embodiments of the invention. Terminal 120 may also be an on-board device that is suitable for vehicle-to-vehicle communication on the Internet of Vehicles. In vehicle-to-vehicle communication, all channels or signaling according to the invention are channels or signaling suitable for direct communication.

[0081] A "5G NR system" in embodiments of the present invention may also be referred to as a 5G system or an NR system as understood by those skilled in the art. The technical solutions described in the embodiments of the invention may be applicable to the 5G NR system, and may also be applicable to the post-evolution systems of the 5G NR system and the 5G NR vehicle network system.

[0082] The present description contains relevant definitions for the reporting process and the recovery process in the case where the terminal has a beam failure in a secondary cell (SCell, Secondary Cell).

[0083] FIG. 2 is a block diagram illustrating a beam failure reporting method according to an exemplary embodiment of the invention. The method may be applicable to the terminal shown in FIG. 1. The method may include the following.

[0084] In step 201, the terminal determines that the target secondary serving cell of the n accessed secondary serving cells has a beam failure, where n is a positive integer.

[0085] In a carrier aggregation (CA) scenario, a terminal may have multiple serving cells. The plurality of serving cells may be divided into a primary serving cell and at least one secondary serving cell. Primary serving cell refers to a serving cell operating in the base band. The terminal may perform an initial connection establishment process or a connection re-establishment process with the primary serving cell. A secondary serving cell refers to a serving cell operating in a secondary frequency band. Secondary serving cells may provide additional wireless resources to improve terminal throughput.

[0086] It should be noted that a terminal can simultaneously access multiple secondary serving cells.

[0087] When the terminal is moved or the direction of the base station antenna is changed, there may be a problem of failure of the beam configured by the base station for the terminal to receive downlink control information transmitted by the secondary serving cell. In addition, the terminal can detect whether there is a beam failure in a secondary serving cell of the plurality of accessed secondary serving cells and determine the target secondary serving cell where the beam failure has occurred.

[0088] Optionally, the base station configures the terminal with the RS set to detect beam failure of each secondary serving cell configured with the PDCCH. When the terminal detects that the channel measurement parameters corresponding to all RSs in the RS set are below a threshold, the terminal determines that a beam failure has occurred in the secondary serving cell.

[0089] In step 202, the terminal transmits a first medium access control (MAC) control element (CE) signaling to the base station. The first MAC CE signaling includes beam failure indication information.

[0090] When the terminal determines that the target secondary serving cell of the plurality of accessed secondary serving cells has a beam failure, it may indicate to the base station that the target secondary serving cell has a beam failure through the first CE MAC signaling. The first MAC CE signaling includes the aforementioned beam failure indication information configured to indicate that the target secondary serving cell has a beam failure.

[0091] Optionally, said target secondary serving cell may be one or more secondary serving cells of the n secondary serving cells accessed by the terminal.

[0092] In a possible implementation, the beam failure indication information is represented by m-bit codewords, where the n-bit codewords in the bitwise codewords and n secondary serving cells have a one-to-one correspondence, where m is an integer greater than or equal to n; wherein the ith codeword bit in the n-bit codewords is configured to indicate whether the ith secondary serving cell of the n secondary serving cells has a beam failure, where i is a positive integer less than or equal to n.

[0093] The length of the bit codewords (ie, m) in the above beam failure indication information may be predetermined by the protocol, which means that the beam failure conditions of the m secondary serving cells may be indicated at most once. For example, m is 8, 16, 32, or other values, the n-bit codewords may be the first n-bit codewords in the m-bit codewords and one-to-one correspond to n secondary serving cells.

[0094] When the beam failure indication information is represented by m-bit codewords, the terminal may simultaneously report one or more target secondary serving cells where a beam failure has occurred.

[0095] As an example, assume that m is 5 and the terminal has accessed three secondary serving cells (SCell#1, SCell#2, and SCell#3, respectively). The beam failure indication information is represented by 5-bit codewords, and the first 3-bit codewords in the 5-bit codewords correspond sequentially to SCell#1, SCell#2, and SCell#3. Assume that a bit value of 1 indicates that a beam failure has occurred and 0 indicates that a beam failure has not occurred. When the beam failure indication information is 01000, it means that SCell#2 has a beam failure, and SCell#1 and SCell#3 do not have a beam failure. When the beam failure indication information is 10100, it means that SCell#1 and SCell#3 have beam failure, and SCell#2 has no beam failure. When the beam failure information is 11100, it means that SCell#1, SCell#2 and SCell#3 have beam failure.

и

представляет округление в большую сторону; при этом k-битовые кодовые слова представляют собой идентификационную информацию целевой вторичной обслуживающей соты.[0096] In another possible implementation, the beam failure indication information is represented by k-bit codewords, where

and

represents rounding up; wherein the k-bit codewords are the identification information of the target secondary serving cell.

обозначение

представляет округление в большую сторону. Например, когда n равно 3 или 4, k равно 2; когда n равно от 5 до 8, k равно 3; когда n равно от 9 до 16, k равно 4 и т.п. Идентификационная информация целевой вторичной обслуживающей соты сконфигурирована для однозначной идентификации целевой вторичной обслуживающей соты.[0097] In the equation

designation

represents rounding up. For example, when n is 3 or 4, k is 2; when n is 5 to 8, k is 3; when n is between 9 and 16, k is 4, and so on. The identification information of the target secondary serving cell is configured to uniquely identify the target secondary serving cell.

[0098] Since the k-bit codewords are the identification information of the target secondary serving cell, the terminal can report one target secondary serving cell in which beam failure occurs at one time only when the beam failure indication information is represented by the above k-bit code words.

[0099] As an example, suppose that n is 4, which means that the terminal is accessing four secondary serving cells SCell#1, SCell#2, SCell#3, and SCell#4. k is set to 2, that is, the path failure indication information uses 2-bit codewords as a representation. When the 2-bit codewords are 00, it means that a beam failure has occurred in SCell#1; when the 2-bit codewords are 01, it means that a beam failure has occurred in SCell#2; when the 2-bit codewords are 10, it means that a beam failure has occurred in SCell#3; when the 2-bit codewords are 11, it means that a beam failure has occurred in SCell#4.

[00100] Finally, in the solutions provided in the embodiments of the invention, when the terminal determines that the target secondary serving cell of the plurality of accessed secondary serving cells has a beam failure, it transmits MAC CE signaling including failure indication information beam, to the base station to notify the base station of the target secondary serving cell with beam failure. Therefore, a solution is provided for the terminal to report the occurrence of beam failure in the secondary serving cell and report the beam failure state of the secondary serving cell.

[00101] The above embodiments present and explain the beam failure message of the secondary serving cell, and the following describes and explains the beam failure recovery of the secondary serving cell after the beam failure has occurred.

[00102] The terminal may also select a target beam to recover from a beam failure out of the p possible beams, and transmit target beam indication information to the base station. The target beam indication information is configured to indicate the selected target beam, where p is an integer greater than 1.

[00103] Optionally, for each secondary serving cell configured with the PDCCH with beam failure detection and beam failure recovery, the p possible beams are beams configured by the base station via Radio Resource Control (RRC) signaling; or the p candidate beams are the beams activated by MAC signaling from the plurality of beams configured by the base station through RRC signaling.

[00104] When the terminal determines that the target secondary serving cell has a beam failure, it may select a candidate beam with a signal quality greater than a predetermined threshold from the plurality of candidate beams corresponding to the target secondary serving cell as the target beam. The mentioned signal quality can be L1-RSRP (Layer 1-Reference Signal Receiving Power, the power of the received layer 1 reference signal), or L1-SINR (Layer 1-Signal to Interference plus Noise Ratio, the ratio of the layer 1 signal to the sum of interference and noise) , or L1-RSRQ (Layerl-Reference Signal Receiving Quality) and the like, which is not limited in the embodiments of the present invention.

[00105] The above target beam may represent one or more beams.

[00106] In an exemplary implementation, the first CE MAC signaling also includes target beam indication information. That is, when the terminal reports the beam failure state of the secondary serving cell to the base station through the first MAC CE signaling, it also reports the target beam found by the terminal for beam failure recovery through the first MAC CE signaling.

[00107] In another possible implementation, the terminal transmits a second MAC CE signaling to the base station. The second MAC CE signaling includes target beam indication information. The second MAC CE signaling is a different signaling than the first MAC CE signaling. That is, the terminal separately reports the beam failure state of the secondary serving cell and the target beam found by the terminal for beam failure recovery through two different MAC CE signaling. In addition, the first MAC CE signaling and the second MAC CE signaling may be transmitted at the same time or at different times. For example, the first MAC CE signaling is transmitted first, and the second MAC CE signaling is transmitted later.

[00108] In addition, the indication information of the target beam can be expressed in the following two ways.

[00109] As a possible implementation, the target beam indication information is represented by q-bit codewords, wherein the p-bit codewords in the q-bit codewords and the p possible beams have a one-to-one correspondence, where q is an integer greater than or equal to R; wherein the j-th bit of the codeword in the p-bit codewords is configured to indicate that the j-th possible path among the p possible paths is selected as the target path, where j is a positive integer less than or equal to p.

[00110] The length of the bit codewords (ie, q) of the target beam indication information may be predetermined by the protocol. For example, q is equal to 4, 8, 16, or other values. The above p-bit codewords may be the first p-bit codewords in the q-bit codewords.

[00111] As an example, assume that q is 4 and the base station configures 3 possible beams (beam #1, beam #2, and beam #3, respectively) for the terminal. The target beam indication information is represented by 4-bit codewords. The first 3-bit codewords in the 4-bit codewords correspond sequentially to path #1, path #2, and path #3. Suppose 1 indicates that a ray is selected as the target ray, and 0 indicates that a ray is not selected as the target ray. When the target beam indication information is 0100, it means that beam #2 is selected as the target beam, and beam #1 and beam #3 are not selected as the target beam; when the target beam indication information is 1010, it means that beam #1 and beam #3 are selected as the target beam, and beam #2 is not selected as the target beam; when the indication information of the target beam is 1110, it means that beam #1, beam #2 and beam #3 are selected as the target beam.

[00112] When the target beam indication information is represented by the above q-bit codewords, the terminal may simultaneously report one or more target beams to recover from beam failure.

и

представляет округление в большую сторону; при этом r-битовые кодовые слова представляют собой идентификационную информацию целевого луча.[00113] In another possible implementation, the target beam indication information is represented by r-bit codewords, where

and

represents rounding up; wherein the r-bit codewords represent the identification information of the target beam.

обозначение

представляет округление в большую сторону. Например, когда р равно 3 или 4, r равно 2; когда р равно от 5 до 8, r равно 3; когда р равно от 9 до 16, r равно 4 и т.п. Идентификационная информация целевого луча сконфигурирована для однозначной идентификации целевого луча.[00114] In the equation

designation

represents rounding up. For example, when p is 3 or 4, r is 2; when p is between 5 and 8, r is 3; when p is between 9 and 16, r is 4, and so on. The target beam identification information is configured to uniquely identify the target beam.

[00115] Because r-bit codewords are target beam identification information, the terminal can only report one beam-failure recovery target at a time when the target beam indication information is represented by r-bit codewords.

[00116] For example, suppose that p is 4, which means that the possible beams include beam #1, beam #2, beam #3, and beam #4. r takes the value 2, that is, the target beam indication information is represented by 2-bit codewords. When the 2-bit codewords are 00, it means that beam #1 of the four possible beams is selected as the target beam; when the 2-bit codewords are 01, it means that beam #2 of the four possible beams is selected as the target beam; when the 2-bit codewords are 10, it means that beam #3 out of four possible beams is selected as the target beam; when the 2-bit codewords are equal to 11, it means that beam #4 of the four possible beams is selected as the target beam.

[00117] Optionally, the identification information of the aforementioned target beam may also be a sequence number of the target beam from among the possible beams. The sequence number may be a transmission configuration indication (TCI) state numbering sequence corresponding to the candidate beam. For example, beam #1 corresponds to TCI #2, beam #2 corresponds to TCI #7, beam #3 corresponds to TCI #14, and beam #4 corresponds to TCI #18.

[00118] Finally, in the embodiments of the present invention, the target beam selected by the terminal for beam failure recovery is notified to the base station by transmitting target beam indication information to the base station, which provides a recovery decision for the terminal when a beam failure occurred in the secondary serving cell in order to recover from the beam failure of the secondary serving cell.

[00119] FIG. 3 is a block diagram illustrating a method for reporting a beam failure according to another embodiment of the invention. The method may be applicable to the terminal shown in FIG. 1. The method may include the following.

[00120] In step 301, the terminal determines that the target secondary serving cell of the n accessed secondary serving cells has a beam failure, where n is a positive integer.

[00121] This step is the same or similar to step 201 in the embodiments of the invention in FIG. 2 and will not be re-described here.

[00122] Optionally, after determining that a beam failure has occurred in the accessed target secondary serving cell, the terminal may indicate to the base station that a beam failure has occurred, including the following.

[00123] In step 302, the terminal transmits an uplink scheduling request or a random access request to the base station.

[00124] The above SR (scheduling request) or random access request is configured to notify a base station of a terminal beam failure.

[00125] Optionally, the above SR may be a generic SR, that is, the SR is the same as the SR used by the terminal to request the base station to configure a resource for uplink data transmission. The above SR may also be an SR for reporting a beam failure, that is, it may be different from the SR used by the terminal to request the base station to configure a resource for uplink data transmission.

[00126] The aforementioned random access request resource may be specifically a time-frequency code resource used for beam failure indication when random access is performed, i.e., the base station configures a dedicated random access time-frequency code resource for the terminal, and when the base station the station receives a specific random access preamble via the time-frequency code resource, the base station knows that the terminal has a beam failure. However, if the base station also needs to know in which serving cell or serving cells the terminal has beam failure, it also needs to configure a PUSCH resource for the terminal to transmit the identity of the target secondary serving cell in which beam failure has occurred.

[00127] Optionally, the above SR is transmitted via a Physical Uplink Control Channel (PUCCH) resource.

[00128] Optionally, the PUSCH resource is a resource in the target secondary serving cell; or the PUSCH resource is a resource in the primary serving cell accessed by the terminal; or the PUSCH resource is a resource in a Primary Secondary Serving Cell (PSCell) of the n Secondary Serving Cells; or the PUSCH resource is a resource in other secondary serving cells of the n secondary serving cells other than the target secondary serving cell.

[00129] For example, when the target secondary serving cell belongs to a master cell group (MCG), the PUCCH resource may be a resource in the primary serving cell accessed by the terminal; when the target secondary serving cell belongs to a Secondary Cell group (SCG), the PUCCH resource may be a resource in a PSCell of n secondary serving cells.

[00130] Optionally, the random access request is transmitted over a Physical Random Access Channel (PRACH) resource

[00131] Optionally, the PRACH resource is a target secondary serving cell resource; or the PRACH resource is a resource in the primary serving cell accessed by the terminal; or the PRACH resource is a resource in a Primary Secondary Serving Cell (PSCell) of n Secondary Serving Cells; or the PRACH resource is a resource in other secondary serving cells of the n secondary serving cells other than the target secondary serving cell.

[00132] For example, when the target secondary serving cell belongs to the MCG, the PRACH resource may be a resource in the primary serving cell accessed by the terminal; when the target secondary serving cell belongs to the SCG, the PRACH resource may be a resource in a PSCell of n secondary serving cells.

[00133] In step 303, the terminal receives resource configuration information from the base station.

[00134] After the base station receives the above SR or random access request from the terminal, it can know that a beam failure has occurred. In addition, the base station may transmit resource configuration information to the terminal. The resource configuration information is configured to indicate a physical uplink shared channel (PUSCH) resource for the terminal to transmit the first MAC CE signaling. Accordingly, the terminal receives the above resource configuration information from the base station to obtain the PUSCH resource.

[00135] In step 304, the terminal transmits a first medium access control (MAC) control element (CE) signaling to the base station. The first MAC CE signaling includes beam failure indication information.

[00136] The above beam failure indication information is configured to indicate that a beam failure has occurred in the target secondary serving cell. For example, the terminal transmits the first MAC CE signaling via the PUSCH resource obtained with the SR or the random access request. Optionally, if the terminal also transmits the second MAC CE signaling described above to the base station, the terminal may also transmit the second MAC CE signaling via the PUSCH resource.

[00137] In embodiments, after determining that a beam failure has occurred in the target secondary serving cell, the terminal notifies the base station of the terminal beam failure, so that the base station allocates a PUSCH resource to report specific beam failure information to the terminal after receiving the above notification. The terminal uses the PUSCH resource allocated by the base station to transmit MAC CE signaling to the base station.

[00138] In some other examples, when the base station configures the periodic PUSCH resource, the first MAC CE signaling and/or the second MAC CE signaling may be transmitted directly using the periodic PUSCH resource. That is, in this case, the terminal may not need to request the base station to allocate a PUSCH resource for transmitting MAC CE signaling via SR or random access request.

[00139] Optionally, the PUSCH resource is a resource in the target secondary serving cell; or the PUSCH resource is a resource in the primary serving cell accessed by the terminal; or the PUSCH resource is a resource in a Primary Secondary Serving Cell (PSCell) of the n Secondary Serving Cells; or the PUSCH resource is a resource in other secondary serving cells of the n secondary serving cells other than the target secondary serving cell.

[00140] Finally, in the designs presented in the embodiments of the invention, MAC CE signaling for beam failure reporting and recovery may also be transmitted over the PUSCH resource to avoid excessive use of PUCCH resources.

[00141] Below are embodiments of a device in accordance with the invention that can be configured to perform embodiments of the method in accordance with the invention. For details that are not disclosed in the embodiments of the apparatus according to the invention, refer to the embodiments of the method according to the invention.

[00142] FIG. 4 shows a block diagram of a device for reporting a beam failure according to an exemplary embodiment of the invention. The apparatus has the function of executing the method embodiments described above, and this function may be implemented by hardware or by hardware executing corresponding software. The device may be the terminal shown above, and may also be installed in the terminal. The device 400 may include a target cell determination module 410 and a first signaling transmission module 420.

[00143] The target cell determination module 410 is configured to determine that the target secondary serving cell of the n accessed secondary serving cells has a beam failure, where n is a positive integer.

[00144] The first signaling transmission module 420 is configured to transmit a first Medium Access Control (MAC) control element (CE) signaling to a base station, wherein the first MAC CE signaling includes beam failure indication information to indicate that the target secondary serving cell has beam failure.

[00145] Finally, in the solutions presented in the embodiments of the invention, when the terminal determines that the target secondary serving cell of the plurality of accessed secondary serving cells has a beam failure, it transmits MAC CE signaling including failure indication information beam, to the base station, to notify the base station of the target secondary serving cell with beam failure. Therefore, a solution can be provided for the terminal to report the occurrence of beam failure in the secondary serving cell and to report the beam failure state of the secondary serving cell.

[00146] In an exemplary embodiment, the beam failure indication information is represented by m-bit codewords, wherein the n-bit codewords in the m-bit codewords and n secondary serving cells have a one-to-one correspondence, where m is an integer greater than or equal to and; wherein the ith bit of the codeword in the n-bit codewords is configured to indicate whether the ith secondary serving cell of the n secondary serving cells has a beam failure, where i is a positive integer less than or equal to n.

и

представляет округление в большую сторону; при этом k-битовые кодовые слова являются идентификационной информацией целевой вторичной обслуживающей соты.[00147] In an exemplary embodiment, the beam failure indication information is represented by k-bit codewords, where

and

represents rounding up; wherein the k-bit codewords are the identification information of the target secondary serving cell.

[00148] In an exemplary embodiment, the p candidate beams are beams configured by the base station via radio resource control (RRC) signaling; or the p candidate beams are the beams activated by MAC signaling from the plurality of beams configured by the base station through RRC signaling.

[00149] In an embodiment of the invention, as shown in FIG. 5, device 400 also includes a second signaling module 430.

[00150] The second signaling module 430 is configured to transmit the second MAC CE signaling to the base station, wherein the second MAC CE signaling includes target beam indication information configured to indicate a target beam selected from p possible beams for beam failure recovery, where p is an integer greater than 1.

[00151] In an exemplary embodiment, the target beam indication information is represented by q-bit codewords, wherein the p-bit codewords in the q-bit codewords and p possible beams have a one-to-one correspondence, where q is an integer greater than or equal to p ; wherein the j-th bit of the codeword in the p-bit codewords is configured to indicate that the j-th possible path out of the p possible paths is selected as the target path, where j is a positive integer less than or equal to p.

и

представляет округление в большую сторону; при этом r-битовые кодовые слова являются идентификационной информацией целевого луча.[00152] In an exemplary embodiment of the invention, the target beam indication information is represented by r-bit codewords, where

and

represents rounding up; wherein the r-bit codewords are the identification information of the target beam.

[00153] In an exemplary embodiment of the invention, the p possible beams are beams configured by the base station through Radio Resource Control (RRC) signaling; or the p candidate beams are the beams activated by MAC signaling from the plurality of beams configured by the base station through RRC signaling.

[00154] In an embodiment of the invention, as shown in FIG. 5, the device 400 also includes a request transmitting module 440 and a configuration information receiving module 450.

[00155] The request transmitting module 440 is configured to transmit an uplink scheduling request or a random access request to a base station, wherein the uplink scheduling request or random access request is configured to notify the base station of the occurrence of a terminal beam failure.

[00156] The configuration information receiving unit 450 is configured to receive resource configuration information from the base station, wherein the resource configuration information is configured to indicate a physical uplink common channel (PUSCH) resource for the terminal to transmit the first MAC CE signaling.

[00157] In an exemplary embodiment of the invention, the first MAC CE signaling is transmitted over a periodic physical uplink common channel (PUSCH) resource configured by the base station for the terminal.

[00158] In an embodiment of the invention, the PUSCH resource is a resource in the target secondary serving cell; or the PUSCH resource is a resource in the primary serving cell accessed by the terminal; or the PUSCH resource is a resource in the primary secondary serving cell of the n secondary serving cells; or the PUSCH resource is a resource in other secondary serving cells of the n secondary serving cells other than the target secondary serving cell.

[00159] It should be noted that when the device presented in the above embodiments of the invention performs its functions, the division of the above functional modules is used as an example. In real applications, the above functions can be distributed among different function modules according to actual needs. That is, the device structure is divided into various functional modules to perform all or part of the functions described above.

[00160] With regard to the device in the above embodiments, the specific methods performed by each module have been described in detail in the method embodiments and will not be described in detail here.

[00161] An exemplary embodiment of the invention also provides a device for reporting a beam failure. The device may be applicable in the terminal shown above. The apparatus may implement the beam failure reporting method of the invention. The device may include a processor and memory for storing executable instructions of the processor.

[00162] The processor is configured to determine that a target secondary serving cell of the n accessed secondary serving cells has a beam failure, where n is a positive integer.

[00163] The processor is also configured to send a first Medium Access Control (MAC) control element (CE) signaling to the base station, wherein the first CE MAC signaling includes beam failure indication information to indicate that the target secondary serving cell has a beam failure. .

[00164] In an exemplary embodiment, the beam failure indication information is represented by m-bit codewords, wherein the n-bit codewords in the m-bit codewords and n secondary serving cells have a one-to-one correspondence, where m is an integer greater than or equal to n.

[00165] The ith codeword bit in n-bit codewords is configured to indicate whether the ith secondary serving cell of the n secondary serving cells has a beam failure, where i is a positive integer less than or equal to n.

и

представляет округление в большую сторону, k-битовые кодовые слова представляют собой идентификационную информацию целевой вторичной обслуживающей соты.[00166] In an exemplary embodiment, the beam failure indication information is represented by k-bit codewords, where

and

represents rounding up, the k-bit codewords represent the identification information of the target secondary serving cell.

[00167] In an exemplary embodiment, the first CE MAC signaling also includes target beam indication information configured to indicate a target beam selected from p possible beams to recover from a beam failure, where p is an integer greater than 1.

[00168] In an exemplary embodiment of the invention, the processor is configured as follows.

[00169] The processor is configured to transmit a second MAC CE signaling to a base station, wherein the second MAC CE signaling includes target beam indication information configured to indicate a target beam selected from p possible beams to recover from a beam failure, where p is an integer number more than 1.

[00170] In an exemplary embodiment, the target beam indication information is represented by q-bit codewords, wherein the p-bit codewords in the q-bit codewords and p possible beams have a one-to-one correspondence, where q is an integer greater than or equal to p .

[00171] The j-th bit of the codeword in the p-bit codewords is configured to indicate that the j-th possible path out of the p possible paths is selected as the target path, where j is a positive integer less than or equal to p.

и

представляет округление в большую сторону.[00172] In an exemplary embodiment, the target beam indication information is represented by r-bit codewords, where

and

represents rounding up.

[00173] The r-bit codewords are the identification information of the target beam.

[00174] In an exemplary embodiment, p candidate beams are beams configured by the base station through Radio Resource Control (RRC) signaling, or p candidate beams are beams activated by MAC signaling from a plurality of beams configured by the base station through RRC signaling.

[00175] In an exemplary embodiment of the invention, the processor is configured as follows.

[00176] The processor is configured to transmit an uplink scheduling request or random access request to a base station, wherein the uplink scheduling request or random access request is configured to notify the base station of the occurrence of a terminal beam failure.

[00177] The processor is configured to receive resource configuration information from the base station, wherein the resource configuration information is configured to indicate a physical uplink shared channel (PUSCH) resource for the terminal to transmit the first MAC CE signaling.

[00178] In an exemplary embodiment of the invention, the first MAC CE signaling is transmitted over a periodic physical uplink common channel (PUSCH) resource configured by the base station for the terminal.

[00179] In an exemplary embodiment, the PUSCH resource is a resource in a target secondary serving cell; or the PUSCH resource is a resource in the primary serving cell accessed by the terminal; or the PUSCH resource is a resource in the primary secondary serving cell of the n secondary serving cells; or the PUSCH resource is a resource in other secondary serving cells of the n secondary serving cells except for the target secondary serving cell.

[00180] From the point of view of the base station and the terminal, the solutions presented in the embodiments of the invention have been described above. It can be understood that in order to implement the above functions, the base station and the terminal may include hardware structures and/or software modules to perform respective specific functions. In combination with the blocks and steps of the algorithms of the disclosed exemplary embodiments of the invention, embodiments of the invention may be implemented in hardware or a combination of hardware and computer software. Whether a particular function is performed by hardware or by hardware controlled by computer software may be determined by the particular application and design constraints of the technical solution. Specialists in the art may use different methods for each particular application to implement the described functions, but such implementations should not be considered as beyond the technical solutions of the embodiments of the present invention.

[00181] FIG. 6 is a block diagram of a terminal according to an exemplary embodiment of the invention.

[00182] Terminal 600 includes transmitter 601, receiver 602, and processor 603. Processor 603 may be a controller. Fig. 6 illustrates "controller/processor 603". Optionally, terminal 600 may also include a processor 605 for modulation and demodulation. The processor 605 for modulation and demodulation may include an encoder 606, a modulator 607, a decoder 608, and a demodulator 609.

[00183] In an example, transmitter 601 adjusts output samples (eg, performs analog conversion, filtering, gain, and upconversion) and generates an uplink signal. The uplink signal is transmitted to the base station via an antenna. In the downlink, the antenna receives the downlink signal transmitted by the base station. Receiver 602 adjusts the signal received from the antenna (eg, filters, gains, downconverts, and digitizes) and provides input samples. In the processor 605 for modulation and demodulation, the encoder 606 receives overhead and signaling messages to be transmitted on the uplink, and processes the overhead and signaling messages (eg, performs formatting, encoding, and interlacing). The modulator 607 also processes the encoded overhead and signaling messages (eg, symbol mapping and modulation) and provides output samples. A demodulator 609 processes the input samples (eg, demodulates) and provides a symbol estimate. Decoder 608 processes the symbol estimates (eg, performs de-interlacing and decoding) and provides decoded data and signaling messages to terminal 600. Encoder 606, modulator 607, demodulator 609, and decoder 608 may be implemented by a combined modulation and demodulation processor 605. These modules perform processing in accordance with the wireless access technology adopted in the wireless access network (for example, in the Long Term Evolution (LTE) network and in the access technologies of other advanced systems). It should be noted that if the terminal 600 does not include the processor 605, the above functions of the processor 605 may also be implemented by the processor 603.

[00184] The processor 603 monitors and controls the operations of the terminal 600 and is configured to execute the processing procedure performed by the terminal 600 in the above embodiments. For example, the processor 603 is also configured to perform each terminal-side action in the above method embodiments and/or other actions in the technical solutions presented in the embodiments of the invention.

[00185] In addition, terminal 600 may also include memory 604. Memory 604 is configured to store program codes and data for terminal 600.

[00186] It should be understood that FIG. 6 illustrates a simplified design of terminal 600. In practical applications, terminal 600 may include any number of transmitters, receivers, processors, modem processors, storage devices, etc., all terminals that may implement embodiments of the present invention are within the spirit of inventions.

[00187] FIG. 7 is a block diagram of a base station according to an exemplary embodiment of the invention.

[00188] The base station 700 includes a transmitter/receiver 701 and a processor 702. The processor 702 may be a controller. Fig. 7 illustrates "controller/processor 702". The transmitter/receiver 701 is configured to support transmission and reception of information between the base station and the terminal in the above embodiments, and to support communication between the base station and other network entities. The processor 702 performs all functions for communicating with the terminal. In the uplink, the uplink signal from the terminal is received by the antenna, demodulated by the receiver 701 (eg, the high frequency signal is modulated into a baseband signal), and further processed by the processor 702 to recover the overhead and signaling messages transmitted by the terminal. On the downlink, the overhead and signaling messages are processed by the processor 702 and modulated by the transmitter 701 (eg, the baseband signal is modulated into a high frequency signal) to form a downlink signal that is transmitted to the terminal via an antenna. It should be noted that the demodulation or modulation functions may also be performed by the processor 702. For example, the processor 702 is also configured to perform each action on the base station side in the above method embodiments and/or other actions in the technical solutions presented in the embodiments of the invention.

[00189] In addition, the base station 700 may also include a memory 703. The memory 703 is configured to store program codes and data of the base station 700. In addition, the base station 700 may also include a communication module 704. The communication module 704 is configured to support communication of the base station 700 with other network entities (eg, network devices in the core network). For example, in a 5G NR system, communication module 704 may be an NG-U interface to support communication between base station 700 and UPF (User Plane Function) entities; or the communication module 704 may also be an NG-C interface that is configured to support communication between the base station 700 and the AMF (Access and Mobility Management Function) entities.

[00190] It should be understood that FIG. 7 illustrates a simplified design of base station 700. In practical applications, base station 700 may include any number of transmitters, receivers, processors, controllers, memories, communication modules, etc., with all base stations that implement embodiments of the invention being located within the scope of the embodiments of the invention.

[00191] Embodiments of the invention also provide a computer-readable storage medium that stores a computer program that, when executed by the base station processor, executes the beam failure reporting method presented above.

[00192] It should be understood that the words "multiple" or "many" as used herein refer to two or more entities. The expression "and/or" describes the relationship of related objects and indicates that there are three types of relationship, for example, A and/or B, which means the following: A exists separately, A and B exist simultaneously, and B exists separately. The "/" character usually indicates that the related objects are in an "or" relationship.

[00193] Those skilled in the art will appreciate other embodiments of the invention from a consideration of the description and practice of the invention. This description is intended to cover any variation, use, or adaptation of the invention in accordance with its general principles, including such departures from the invention as are known or common practice in the art. The description and examples are intended to be regarded as illustrative only, with the invention being defined by the claims.

[00194] It should be appreciated that the present invention is not limited to the precise construction as described above and illustrated in the accompanying drawings, and that various modifications and changes may be made within the spirit of the invention. It is intended that the scope of the invention be limited only by the appended claims.

Claims (29)

1. A method for reporting a beam failure, including: determining (201; 301) by the terminal that the target secondary serving cell of the n accessed secondary serving cells has a beam failure, where n is a positive integer; transmitting (302) by the terminal an uplink scheduling request or a random access request to a base station, wherein the uplink scheduling request or random access request is configured to notify the base station of the occurrence of a terminal beam failure; reception (303) by the terminal of resource configuration information from the base station, wherein the resource configuration information is configured to indicate a physical uplink common channel (PUSCH) resource for the terminal to transmit the first medium access control (MAC) control element (CE) signaling , and transmission (202; 304) by the terminal of the first MAC CE signaling to the base station, wherein the first MAC CE signaling contains beam failure indication information to indicate that the target secondary serving cell has a beam failure. 2. The method of claim 1, wherein the beam failure indication information is represented by m -bit codewords, wherein the n -bit codewords in the m -bit codewords and n secondary serving cells have a one-to-one correspondence, where m is an integer, greater than or equal to n; wherein the i -th codeword bit in the n -bit codewords is configured to indicate whether the i -th secondary serving cell of the n secondary serving cells has a beam failure, where i is a positive integer less than or equal to n. 3. The method of claim 1, wherein the beam failure indication information is represented by k -bit codewords, where

and

represents rounding up; wherein the k -bit codewords are the identification information of the target secondary serving cell. 4. The method according to any one of paragraphs. 1-3, wherein the first MAC CE signaling also contains target beam indication information configured to indicate a target beam selected from p possible beams to recover from a beam failure, where p is an integer greater than 1. 5. The method according to any one of paragraphs. 1-4, also including: the terminal transmitting a second MAC CE signaling to the base station, wherein the second MAC CE signaling contains target beam indication information configured to indicate a target beam selected from p possible beams to recover from beam failure, where p is an integer greater than 1. 6. The method according to claim 4 or 5, wherein the target beam indication information is represented by q -bit codewords, wherein the p -bit codewords in the q -bit codewords and the p possible beams have a one-to-one correspondence, where q is an integer , greater than or equal to p; wherein the j th codeword bit in the p -bit codewords is configured to indicate that the j th possible path out of the p possible paths is selected as the target path, where j is a positive integer less than or equal to p . 7. The method according to claim 4 or 5, wherein the target beam indication information is represented by r -bit codewords, where

and

represents rounding up; wherein the r -bit codewords represent the identification information of the target beam. 8. The method according to claim 4 or 5, wherein the p possible beams are beams configured by the base station via radio resource control (RRC) signaling; or The p candidate beams are the beams activated by MAC signaling from the plurality of beams configured by the base station through RRC signaling. 9. The method according to any one of paragraphs. 1-8, in which: the PUSCH resource is a resource in the target secondary serving cell; or the PUSCH resource is a resource in the primary serving cell accessed by the terminal; or the PUSCH resource is a resource in the primary secondary serving cell of the n secondary serving cells; or the PUSCH resource is a resource in other secondary serving cells of the n secondary serving cells except for the target secondary serving cell. 10. An apparatus (400) for reporting a beam failure to a terminal, comprising: a target cell determination module (410) configured to determine that a target secondary serving cell of the n accessed secondary serving cells has a beam failure, where n is a positive integer; a request transmitting module (440) configured to transmit an uplink scheduling request or a random access request to a base station, wherein the uplink scheduling request or random access request is configured to notify the base station of the occurrence of a terminal beam failure; a configuration information receiving module (450), configured to receive resource configuration information from a base station, wherein the resource configuration information is configured to indicate a physical uplink shared channel (PUSCH) resource for the terminal to transmit first control element (CE) signaling media access control (MAC), and a first signaling transmission module (420) configured to transmit the first MAC CE signaling to the base station, wherein the first MAC CE signaling contains beam failure indication information to indicate that the target secondary serving cell has a beam failure. 11. A device for reporting a beam failure for a terminal, comprising: a processor and a memory for storing instructions executable by the processor; wherein the processor is configured to implement the beam failure reporting method according to any one of claims. 1-9. 12. A computer-readable storage medium that stores computer programs that, when executed by the processor, provide a method for reporting a beam failure according to any one of paragraphs. 1-9.

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