Signal transmission method and apparatus

Abstract

The application discloses a signal transmission method and device, which are used for realizing transmission of a PUCCH (Physical Uplink Control Channel) through a beam used for sending a beam failure event of a cell when the cell occurs beam failure. The signal transmission method provided by the application comprises the following steps: determining that the cell occurs beam failure; and if a terminal needs to send a PUCCH signal, sending the PUCCH signal by using an uplink sending beam when a preset condition is met.

Description

Technical Field

[0001] This application relates to the field of communication technology, and in particular to signal transmission methods and apparatus. Background Technology

[0002] For wireless communication systems, analog beamforming can achieve higher beamforming gain and wider coverage for downlink signal transmission. A significant challenge of analog beamforming in high-frequency systems is the high propagation loss and high probability of signal blockage. When the Physical Downlink Control Channel (PDCCH) signal is blocked, the terminal cannot accurately obtain the control information for downlink transmission, resulting in degraded reception performance, such as reduced data rate, increased scheduling delay, and a worsened user experience.

[0003] In the existing technology, after the terminal detects a beam failure, there is no definition regarding which receive beam to use to receive channel signals other than PDCCH and which transmit beam to use to transmit uplink signals. Summary of the Invention

[0004] This application provides a signal transmission method and apparatus for transmitting PUCCH data via a beam used to transmit the beam failure event of a cell when a beam failure occurs.

[0005] On the terminal side, an embodiment of this application provides a signal transmission method, including:

[0006] The cell has been confirmed to have experienced beamout failure.

[0007] If the terminal needs to transmit the Physical Uplink Control Channel (PUCCH) signal, then when preset conditions are met, the PUCCH signal is transmitted using an uplink transmit beam, wherein the uplink transmit beam includes:

[0008] A beam used to transmit at least one of the following: a beam failure event of the cell, the identifier of the cell, and a new beam of the cell;

[0009] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal used to carry the beam failure event of the cell;

[0010] Alternatively, a beam used to transmit the cell's identifier and / or a new beam;

[0011] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal carrying the cell's identifier and / or the new beam;

[0012] Alternatively, the uplink beam corresponding to the new beam of the reported cell.

[0013] This method determines when a cell has experienced a beam failure. If the terminal needs to send a Physical Uplink Control Channel (PUCCH) signal, then when preset conditions are met, the PUCCH signal is sent using an uplink transmit beam. The uplink transmit beam includes: a beam for transmitting at least one of the following: a beam failure event of the cell, the cell's identifier, and a new beam of the cell; or an uplink beam corresponding to the spatial information of the signal carrying the beam failure event of the cell; or a beam for transmitting the cell's identifier and / or a new beam; or an uplink beam corresponding to the spatial information of the signal carrying the cell's identifier and / or a new beam; or an uplink beam corresponding to the reported new beam of the cell. Thus, when a cell experiences a beam failure, PUCCH transmission is achieved using the beam used to transmit the cell's beam failure event.

[0014] Optionally, the preset conditions include:

[0015] Received specific information or signals.

[0016] Optionally, when preset conditions are met, the physical uplink control channel (PUCCH) is transmitted using the uplink transmit beam, specifically including:

[0017] Starting from the Kth time unit after receiving specific information or signals, the Physical Uplink Control Channel (PUCCH) is transmitted using the uplink transmit beam;

[0018] Alternatively, after receiving specific information or signals for K time units, the Physical Uplink Control Channel (PUCCH) can be transmitted using the uplink transmit beam;

[0019] Where K is a preset non-negative integer.

[0020] Optionally, after receiving specific information or signals for K time units, the Physical Uplink Control Channel (PUCCH) is transmitted using the uplink transmit beam. Specifically, this includes transmitting the PUCCH using the uplink transmit beam starting from the first time slot after receiving specific information or signals for K time units.

[0021] Optionally, the specific information includes one of the following or any combination of the following:

[0022] The cell's beam failure recovery response;

[0023] The terminal receives the uplink grant message ULgrant after sending the PUCCH that reports the beam failure event of the cell.

[0024] Optionally, the specific signal is a signal carrying the specific information.

[0025] Optionally, the specific signal is the Physical Downlink Control Channel (PDCCH) signal.

[0026] Accordingly, on the network side, an embodiment of this application provides a signal receiving method, including:

[0027] When a beam failure occurs in a cell, the receiving terminal reports the beam failure event of that cell.

[0028] The receiving terminal transmits the Physical Uplink Control Channel (PUCCH) signal via an uplink transmit beam; wherein, the uplink transmit beam includes:

[0029] A beam used to transmit at least one of the following: a beam failure event of the cell, the identifier of the cell, and a new beam of the cell;

[0030] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal used to carry the beam failure event of the cell;

[0031] Alternatively, a beam used to transmit the cell's identifier and / or a new beam;

[0032] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal carrying the cell's identifier and / or the new beam;

[0033] Alternatively, the uplink beam corresponding to the new beam of the reported cell.

[0034] Optionally, the method may further include sending specific information or specific signals to the terminal.

[0035] Optionally, the PUCCH is a PUCCH that the terminal transmits using the uplink transmit beam, starting from the Kth time unit after receiving specific information or a specific signal;

[0036] Alternatively, the PUCCH is a PUCCH that the terminal transmits using the uplink transmit beam after receiving specific information or a specific signal for K time units.

[0037] Where K is a preset non-negative integer.

[0038] Optionally, the specific information includes one of the following or any combination of the following:

[0039] The cell's beam failure recovery response;

[0040] The terminal receives the uplink grant message ULgrant after sending the PUCCH that reports the beam failure event of the cell.

[0041] Optionally, the specific signal is the Physical Downlink Control Channel (PDCCH) signal.

[0042] Optionally, the receiving terminal transmits a Physical Uplink Control Channel (PUCCH) via an uplink transmit beam, including:

[0043] The receiving terminal uses the receiving beam corresponding to the uplink transmit beam to transmit the physical uplink control channel (PUCCH).

[0044] On the terminal side, an embodiment of this application provides a signal transmitting device, comprising:

[0045] The determination unit is used to determine when a beam failure has occurred in a cell.

[0046] A transmitting unit is configured to transmit a Physical Uplink Control Channel (PUCCH) signal using an uplink transmit beam when a preset condition is met, provided that the terminal needs to transmit the PUCCH signal. The uplink transmit beam includes:

[0047] A beam used to transmit at least one of the following: a beam failure event of the cell, the identifier of the cell, and a new beam of the cell;

[0048] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal used to carry the beam failure event of the cell;

[0049] Alternatively, a beam used to transmit the cell's identifier and / or a new beam;

[0050] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal carrying the cell's identifier and / or the new beam;

[0051] Alternatively, the uplink beam corresponding to the new beam of the reported cell.

[0052] On the network side, an embodiment of this application provides a signal receiving device, including:

[0053] The first unit is used to receive the beam failure event of the cell reported by the terminal when a beam failure occurs in the cell.

[0054] The second unit is used to receive the Physical Uplink Control Channel (PUCCH) signal transmitted by the terminal through the uplink transmit beam; wherein, the uplink transmit beam includes:

[0055] A beam used to transmit at least one of the following: a beam failure event of the cell, the identifier of the cell, and a new beam of the cell;

[0056] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal used to carry the beam failure event of the cell;

[0057] Alternatively, a beam used to transmit the cell's identifier and / or a new beam;

[0058] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal carrying the cell's identifier and / or the new beam;

[0059] Alternatively, the uplink beam corresponding to the new beam of the reported cell.

[0060] On the terminal side, another signal transmitting device provided in this application embodiment includes:

[0061] Memory, used to store program instructions;

[0062] The processor is configured to call program instructions stored in the memory and execute them according to the obtained program:

[0063] The cell has been confirmed to have experienced beamout failure.

[0064] If the terminal needs to transmit the Physical Uplink Control Channel (PUCCH) signal, then when preset conditions are met, the PUCCH signal is transmitted using an uplink transmit beam, wherein the uplink transmit beam includes:

[0065] A beam used to transmit at least one of the following: a beam failure event of the cell, the identifier of the cell, and a new beam of the cell;

[0066] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal used to carry the beam failure event of the cell;

[0067] Alternatively, a beam used to transmit the cell's identifier and / or a new beam;

[0068] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal carrying the cell's identifier and / or the new beam;

[0069] Alternatively, the uplink beam corresponding to the new beam of the reported cell.

[0070] Optionally, the preset conditions include:

[0071] Received specific information or signals.

[0072] Optionally, when preset conditions are met, the physical uplink control channel (PUCCH) is transmitted using the uplink transmit beam, specifically including:

[0073] Starting from the Kth time unit after receiving specific information or signals, the Physical Uplink Control Channel (PUCCH) is transmitted using the uplink transmit beam;

[0074] Alternatively, after receiving specific information or signals for K time units, the Physical Uplink Control Channel (PUCCH) can be transmitted using the uplink transmit beam;

[0075] Where K is a preset non-negative integer.

[0076] Optionally, after receiving specific information or a specific signal for K time units, the Physical Uplink Control Channel (PUCCH) is transmitted through the transceiver 610 using the uplink transmit beam. Specifically, starting from the first time slot after receiving specific information or a specific signal for K time units, the Physical Uplink Control Channel (PUCCH) is transmitted using the uplink transmit beam.

[0077] Optionally, the specific information includes one of the following or any combination of the following:

[0078] The cell's beam failure recovery response;

[0079] The terminal receives the uplink grant message ULgrant after sending the PUCCH that reports the beam failure event of the cell.

[0080] Optionally, the specific signal is a signal carrying the specific information.

[0081] Optionally, the specific signal is the Physical Downlink Control Channel (PDCCH) signal.

[0082] On the network side, another signal receiving device provided in this application embodiment includes:

[0083] Memory, used to store program instructions;

[0084] The processor is configured to call program instructions stored in the memory and execute them according to the obtained program:

[0085] When a beam failure occurs in a cell, the receiving terminal reports the beam failure event of that cell.

[0086] The receiving terminal transmits the Physical Uplink Control Channel (PUCCH) signal via an uplink transmit beam; wherein, the uplink transmit beam includes:

[0087] A beam used to transmit at least one of the following: a beam failure event of the cell, the identifier of the cell, and a new beam of the cell;

[0088] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal used to carry the beam failure event of the cell;

[0089] Alternatively, a beam used to transmit the cell's identifier and / or a new beam;

[0090] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal carrying the cell's identifier and / or the new beam;

[0091] Alternatively, the uplink beam corresponding to the new beam of the reported cell.

[0092] Optionally, the processor is further configured to invoke program instructions stored in the memory and execute them according to the obtained program: sending specific information or specific signals to the terminal;

[0093] Optionally, the PUCCH is a PUCCH that the terminal transmits using the uplink transmit beam, starting from the Kth time unit after receiving specific information or a specific signal;

[0094] Alternatively, the PUCCH is a PUCCH that the terminal transmits using the uplink transmit beam after receiving specific information or a specific signal for K time units.

[0095] Where K is a preset non-negative integer.

[0096] Optionally, the specific information includes one of the following or any combination of the following:

[0097] The cell's beam failure recovery response;

[0098] The terminal receives the uplink grant message ULgrant after sending the PUCCH that reports the beam failure event of the cell.

[0099] Optionally, the specific signal is the Physical Downlink Control Channel (PDCCH) signal.

[0100] Optionally, the receiving terminal transmits a Physical Uplink Control Channel (PUCCH) via an uplink transmit beam, including:

[0101] The receiving terminal uses the receiving beam corresponding to the uplink transmit beam to transmit the physical uplink control channel (PUCCH).

[0102] Another embodiment of this application provides a computing device including a memory and a processor, wherein the memory is used to store program instructions, and the processor is used to call the program instructions stored in the memory and execute any of the methods described above according to the obtained program.

[0103] Another embodiment of this application provides a computer storage medium storing computer-executable instructions for causing the computer to perform any of the methods described above. Attached Figure Description

[0104] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0105] Figure 1 This is a schematic diagram of signal transmission time points provided in an embodiment of this application;

[0106] Figure 2 This is a schematic diagram of signal transmission time points provided in an embodiment of this application;

[0107] Figure 3 This is a schematic diagram of signal transmission time points provided in an embodiment of this application;

[0108] Figure 4 This is a schematic diagram of signal transmission time points provided in an embodiment of this application;

[0109] Figure 5 This is a schematic diagram of signal transmission time points provided in an embodiment of this application;

[0110] Figure 6 A schematic flowchart illustrating a signal transmission method on the terminal side provided in an embodiment of this application;

[0111] Figure 7 A schematic flowchart illustrating a signal receiving method on the network side provided in an embodiment of this application;

[0112] Figure 8 A schematic diagram of the structure of a signal transmitting device on the terminal side provided in an embodiment of this application;

[0113] Figure 9 A schematic diagram of a signal receiving device on the network side provided in an embodiment of this application;

[0114] Figure 10 A schematic diagram of another signal transmitting device on the terminal side provided in an embodiment of this application;

[0115] Figure 11 This is a schematic diagram of another signal receiving device on the network side provided in an embodiment of this application. Detailed Implementation

[0116] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0117] In communication systems such as Long Term Evolution (LTE), when all downlink beams configured for the downlink control channel (PDCCH) fail, the radio link is considered to have failed, initiating a radio link reconstruction process. This approach, besides increasing latency, can also waste resources, as changing the transmit and / or receive beams might improve the reception quality of the downlink control signal. To avoid this resource waste and latency, the New Radio (NR) standard standardized a fast and reliable beam failure detection and recovery process, enabling the network to quickly recover transmission from beam failures. Version 15 (Rel-15) of the NR standard specifies the beam failure recovery process for the primary cell (Pcell), while version 16 (Rel-16) specifies the beam failure recovery process for the secondary cell (SCell).

[0118] After initial access, a UE can be configured with one or more SCells. A SCell can be configured to have only downlink (DL) or include both downlink (DL) and uplink (UL).

[0119] Each SCell can be configured with a beam failure recovery (BFR) procedure. The beam failure recovery procedure is as follows:

[0120] The UE performs beam failure monitoring. If the UE detects a beam failure in the SCell DL, it sends a beam failure recovery request (BFRQ) to the base station. The beam failure recovery request sent by the UE includes at least a report of the beam failure event and a report of the identifier (or index / indices) of the component carrier (CC) where the beam failure occurred. If the UE detects a new beam that meets certain quality conditions, it can also report the identifier (or index / indices) of the new beam to the base station.

[0121] After receiving a report of a beam failure event from a UE, the base station will reconfigure the downlink beam for the SCell that experienced the reporting failure.

[0122] To perform Beam Failure Detection (BFR), the UE measures the downlink beam quality of the downlink control channel (PDCCH) (or, alternatively, measures the channel quality of the Control Resource Set (CORESET)). The UE performs SCell beam failure detection by detecting the quality of the downlink reference signal used for SCell beam failure detection (BFD). The downlink reference signal used for SCell BFD can be explicitly configured via Radio Resource Control (RRC) or implicitly configured via Transmission Configuration Indicator (TCI) states. Each SCell can be configured with a maximum of eight downlink beams, for example, a maximum of eight TCI states or a maximum of eight downlink reference signals for BFD. The beams of the downlink control channel are a subset of the active TCI states.

[0123] The NR system's process for a UE's beam failure recovery request (BFRQ) for a SCell includes the following two steps:

[0124] Step 1: The UE reports a beam failure event;

[0125] Step 2: The UE reports the index of the CC that failed and the new beam information (if a new beam exists, report it).

[0126] In step 1, the information can be transmitted via a dedicated SR-like Physical Uplink Control Channel (PUCCH) resource configured for the BFR. This SR-like PUCCH refers to a PUCCH whose transmission method is similar to that of a Schedule Request (SR) PUCCH. In step 2, the information is transmitted via the Media Access Control Unit (MAC-CE) in the Physical Uplink Shared Channel (PUSCH). It should be noted that reporting beam failure events via a dedicated SR-like PUCCH configured for the BFR is not necessarily the only method for reporting beam failure events.

[0127] The MAC-CE used to carry the index / indices of the CC that has experienced beam failure and / or the new beam information of the BFR may be carried on the PUSCH corresponding to the PUCCH that sent the beam failure event (the PUSCH scheduled based on the scheduling request of that PUCCH), or it may be reused on a PUSCH resource that already exists, such as a configured grant PUSCH.

[0128] If the MAC-CE in step 2 indicates a new beam and is detected by the UE, after receiving K symbols (K is a positive integer) of the response to the MAC-CE in step 2, the UE uses the new beam indicated by the MAC-CE in step 2 to perform downlink PDCCH reception on the SCell where the beam failure occurred. This applies to all CORESETs of the SCell where the beam failure occurred.

[0129] However, after the UE detects a beam failure and receives a BFR response, there is currently no solution regarding which receive beam the UE should use to receive channel signals other than the PDCCH, and which transmit beam the UE should use to transmit uplink signals.

[0130] Therefore, this application provides a signal transmission method and apparatus, and gives a related solution that enables the UE to use a better uplink transmit beam to transmit PUCCH, and the UE and the network side have the same consensus on the transmit beam of the uplink signal, thereby enabling the base station to use the optimal receive beam to receive the uplink signal and ensuring system performance.

[0131] The method and apparatus are based on the same concept of the application. Since the methods and apparatus solve problems in similar ways, the implementation of the apparatus and methods can refer to each other, and the repeated parts will not be described again.

[0132] The technical solutions provided in this application can be applied to various systems, especially 5G systems. For example, applicable systems include Global System for Mobile Communication (GSM), Code Division Multiple Access (CDMA), Wideband Code Division Multiple Access (WCDMA) General Packet Radio Service (GPRS), Long Term Evolution (LTE), LTE Frequency Division Duplex (FDD), LTE Time Division Duplex (TDD), Universal Mobile Telecommunications System (UMTS), Worldwide Interoperability for Microwave Access (WiMAX), 5G systems, and 5G NR systems. All of these systems include terminal equipment and network equipment.

[0133] The terminal devices involved in the embodiments of this application can be devices that provide voice and / or data connectivity to users, handheld devices with wireless connectivity, or other processing devices connected to a wireless modem. The names of the terminal devices may differ in different systems; for example, in a 5G system, a terminal device can be called user equipment (UE). Wireless terminal devices can communicate with one or more core networks via the RAN. Wireless terminal devices can be mobile terminal devices, such as mobile phones (or "cellular" phones) and computers with mobile terminal devices, for example, portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile devices that exchange voice and / or data with the radio access network. Examples include personal communication service (PCS) phones, cordless phones, session initiated protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), and other devices. Wireless terminal equipment can also be referred to as a system, subscriber unit, subscriber station, mobile station, mobile station, remote station, access point, remote terminal, access terminal, user terminal, user agent, or user device, but is not limited to these terms in the embodiments of this application.

[0134] The network device involved in this application embodiment can be a base station, which may include multiple cells. Depending on the specific application, a base station may also be called an access point, or it may refer to a device in the access network that communicates with a wireless terminal device through one or more sectors on the air interface, or other names. The network device can be used to convert received air frames to and from Internet Protocol (IP) packets, and act 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. The network device can also coordinate the attribute management of the air interface. For example, the network equipment involved in the embodiments of this application can be a base transceiver station (BTS) in a global system for mobile communications (GSM) or code division multiple access (CDMA), or a network equipment (NodeB) in wide-band code division multiple access (WCDMA), or an evolved network device (eNB or e-NodeB) in a long term evolution (LTE) system, a 5G base station in a next generation system, or a home evolved node B (HeNB), relay node, femto, pico, etc., and is not limited in the embodiments of this application.

[0135] The various embodiments of this application will now be described in detail with reference to the accompanying drawings. It should be noted that the order in which the embodiments are presented in this application represents only a chronological order and does not represent the superiority or inferiority of the technical solutions provided by the embodiments.

[0136] The technical solutions provided in this application are applicable to systems including but not limited to NR systems, LTE systems, 6G systems, and their evolved versions.

[0137] This application proposes a signal transmission method for a UE after a beam failure occurs in a cell. This method enables the UE to transmit the PUCCH using a better uplink transmit beam, and the UE and the network side have the same consensus on the transmit beam for uplink signals. This allows the base station to use the optimal receive beam to receive uplink signals, thus ensuring the performance of uplink transmission.

[0138] Regarding beam failure in a cell, one method for determining it is as follows: The UE measures the quality of the downlink beams corresponding to that cell. If the quality of each downlink beam is below a preset condition, the UE considers a beam failure event to have occurred. The downlink beams can be configured by the base station or predefined. For example, the downlink beams could be the beams of all downlink control channels in that cell. Another example is that the downlink beams could be the downlink beams corresponding to the reference signals configured by the base station for the terminal to perform beam failure monitoring.

[0139] Some possible ways for a UE to determine whether the quality of a downlink beam is lower than a preset condition include: the UE measuring the received strength of the reference signal using the downlink beam and determining whether it is greater than a certain threshold. If it is less than a certain threshold, the UE considers the quality of the downlink beam to be lower than the preset condition, and the downlink beam has failed; the UE measuring the performance of the reference signal using the downlink beam and mapping it to the decoding error probability (BLER) of the downlink control channel (PDCCH) signal. If the BLER value is higher than a set threshold (e.g., BLER = 10%), the UE considers the quality of the downlink beam to be lower than the preset condition, and the beam has failed; etc.

[0140] Once a UE determines that a beam failure has occurred in a cell, it can report the beam failure event for that cell.

[0141] Simultaneously or subsequently, the UE may also report a new beam that it deems capable of normal communication (e.g., a beam with quality exceeding certain preset conditions). The reporting of the new beam can take the form of an indication reference signal. The process of the UE reporting beam failure events and new beams can be considered as the process of sending a beam failure recovery request.

[0142] The process of a UE sending a beam failure recovery request for a cell is as follows:

[0143] The UE reports beam failure events and / or new beams via the PRACH configured by the base station for beam failure recovery. A predefined one-to-one correspondence can exist between the new beam and the PRACH. Upon receiving the PRACH, the base station can determine that a beam failure event has occurred at the UE and / or identify the new beam.

[0144] The process for sending a cell beam failure recovery request is as follows:

[0145] Step 1: The UE reports a beam failure event via PUCCH;

[0146] Step 2: The UE reports the identifier of the cell where the beam failure occurred and / or the new beam information via MAC-CE (the new beam information is only reported if a new beam exists).

[0147] In step 1, the PUCCH is used to transmit beam failure events. It can be transmitted through a PUCCH resource specifically configured for BFR, similar to the one used to transmit SR. For ease of description, in this embodiment, the PUCCH used to transmit beam failure events is referred to as PUCCH-BFR, and the PUCCH resource is referred to as PUCCH-BFR resource. The information in step 2 can be reported through PUSCH.

[0148] Optionally, the identifier of the cell where beam failure occurs is reported in the form of the index / indices of the member carrier CC where beam failure occurred.

[0149] Some embodiments of this application include, but are not limited to, the methods described above for a UE to send a cell beam failure recovery request.

[0150] In the standard, embodiments of the present invention may be described in the following English:

[0151] For PUCCH in a failed SCell,starting from K symbols after receiving response to step 2MAC-CE,UE applies the original UL beam(spatial relationinfo)of PUCCH-BFR resource used for the transmission of step 1,on the failedSCell.

[0152] This may be applied only when a new beam is identified, or applied regardless if a new beam is found.

[0153] This applies to all PUCCH resources on the failed SCell.

[0154] The above description includes at least the following possible solutions:

[0155] Option 1: For the PUCCH on the SCell where beam failure occurs, starting from K symbols after receiving the response to the MAC-CE in step 2, the UE uses the original uplink beam used to transmit the PUCCH-BFR resources of step 1 (transmitting the PUCCH).

[0156] Optionally, this scheme is implemented only when the UE identifies a new beam; or, this scheme can be applied regardless of whether the UE finds a new beam.

[0157] Optionally, this solution applies to all PUCCH resources on beam-failed SCells.

[0158] Option 2: For the PUCCH on the SCell where beam failure occurs, starting from K symbols after receiving the response to the MAC-CE in step 2, the UE uses the spatial reference signal of the PUCCH-BFR resource transmitted in step 1 as the spatial reference signal of the PUCCH.

[0159] Optionally, this scheme is implemented only when the UE identifies a new beam; or, this scheme can be applied regardless of whether the UE finds a new beam.

[0160] Optionally, this solution applies to all PUCCH resources on beam-failed SCells.

[0161] Optionally, the space reference signal is a signal indicated by spatial relation info.

[0162] Option 3: For the PUCCH on the SCell where beam failure occurs, starting from K symbols after receiving the response to the MAC-CE in step 2, the UE uses the spatial reference signal of the PUCCH-BFR resource in step 1 as the spatial reference signal of the PUCCH.

[0163] Optionally, this scheme is implemented only when the UE identifies a new beam; or, this scheme can be applied regardless of whether the UE finds a new beam.

[0164] Optionally, this solution applies to all PUCCH resources on beam-failed SCells.

[0165] Optionally, the space reference signal is a signal indicated by spatial relation info.

[0166] In this application, the MAC-CE in step 2 can be a MAC-CE used to transmit the identifier of the cell where beam failure has occurred and / or new beam indication information. The PUCCH-BFR resource in step 1 can be a PUCCH resource used to report beam failure events. Optionally, the PUCCH-BFR resource is a PUCCH resource configured by the base station for beam failure recovery for the UE.

[0167] It should be understood that this application uses SCell as an example for illustration, but it is also applicable to other cells such as PCell and cells that have not performed carrier aggregation; this embodiment uses the UE using PUCCH to report beam failure events as an example for illustration, but this invention is also applicable to the situation where the UE uses other uplink signals such as PRACH to report beam failure events. In this case, "PUCCH-BFR resource in step 1" in this embodiment needs to be replaced with other uplink signals; this embodiment uses the UE using MAC-CE to report the cell identifier and / or new beam that has experienced beam failure as an example for illustration, and it is also applicable to the situation where the UE uses other uplink signals or information such as PRACH to report beam failure events. In this case, "MAC-CE in step 2" in this embodiment needs to be replaced with other uplink signals or information such as PRACH.

[0168] In the standard, embodiments of the present invention may be described in the following English:

[0169] For PUCCH in a failed SCell,starting from K symbols after UE receivesan UL grant after the transmission of step 1PUCCH-BFR,UE applies the originalUL beam(spatial relation info)of PUCCH-BFR resource used for the transmission of step 1,on the failed SCell.

[0170] This may be applied only when a new beam is identified, or applied regardless if a new beam is found.

[0171] This applies to all PUCCH resources on the failed SCell.

[0172] This applies when the UL grant is for new data transmission(egNDItoggled),or regardless of the NDI status.

[0173] The above description includes at least the following possible solutions:

[0174] Option 1: For the PUCCH on the SCell where beam failure occurs, starting from the UL grant after receiving the PUCCH-BFR for transmitting step 1, the UE uses the original uplink beam used for the PUCCH-BFR resources for transmitting step 1 (transmitting the PUCCH).

[0175] Optionally, this scheme is implemented only when the UE identifies a new beam; or, this scheme can be applied regardless of whether the UE finds a new beam.

[0176] Optionally, this solution applies to all PUCCH resources on beam-failed SCells.

[0177] Optionally, the UL grant is a UL grant that schedules new data (e.g., the new data indication NDI field in the UL grant indicates that the PUSCH is new data). Optionally, the UL grant is a normal UL grant that schedules a new transmission for the same HARQ process as the PUSCH carrying the step 2 MAC-CE, which is the same as normal "ACK" for PUSCH. Optionally, the UL grant can be a UL grant that schedules new data or a UL grant that does not schedule new data.

[0178] Option 2: For the PUCCH on the SCell where beam failure occurs, starting from the UL grant after receiving the PUCCH-BFR in transmission step 1, the UE uses the spatial reference signal of the PUCCH-BFR resource in transmission step 1 as the spatial reference signal of the PUCCH.

[0179] Optionally, this scheme is implemented only when the UE identifies a new beam; or, this scheme can be applied regardless of whether the UE finds a new beam.

[0180] Optionally, this solution applies to all PUCCH resources on beam-failed SCells.

[0181] Optionally, the space reference signal is used to indicate the signal of the uplink transmission beam. For example, it may be indicated by spatial relation info.

[0182] Optionally, the UL grant is a UL grant that schedules new data (e.g., the New Data Indicator (NDI) field in the UL grant indicates that the PUSCH is new data). Optionally, the UL grant is a normal UL grant that schedules a new transmission for the same HARQ process as the PUSCH carrying the step 2 MAC-CE, which is the same as the normal "ACK" for PUSCH. Optionally, the UL grant can be a UL grant that schedules new data or a UL grant that does not schedule new data.

[0183] Option 3: For the PUCCH on the SCell where beam failure occurs, starting from the UL grant after receiving the PUCCH-BFR transmission in step 1, the UE uses the spatial reference signal of the PUCCH-BFR resource in step 1 as the spatial reference signal of the PUCCH.

[0184] Optionally, this scheme is implemented only when the UE identifies a new beam; or, this scheme can be applied regardless of whether the UE finds a new beam.

[0185] Optionally, this solution applies to all PUCCH resources on beam-failed SCells.

[0186] Optionally, the space reference signal is a signal used to indicate the uplink transmission beam. For example, it can be indicated by spatial relation info.

[0187] Optionally, the UL grant is a UL grant that schedules new data (e.g., the New Data Indicator (NDI) field in the UL grant indicates that the PUSCH is new data). Optionally, the UL grant is a normal UL grant that schedules a new transmission for the same HARQ process as the PUSCH carrying the step 2 MAC-CE, which is the same as the normal "ACK" for PUSCH. Optionally, the UL grant can be a UL grant that schedules new data or a UL grant that does not schedule new data.

[0188] In the technical solution provided in this application embodiment, for a cell that has experienced beam failure, starting from the Kth time unit after receiving specific information or a specific signal, or after receiving specific information or a specific signal for K time units, or starting from the first time slot after receiving specific information or a specific signal for K time units, the UE uses the uplink transmit beam used to transmit the uplink signal that transmits the beam failure event of the cell to transmit the PUCCH transmitted on the cell.

[0189] Optionally, the UE sets or replaces the spatial reference signal of the PUCCH with a spatial reference signal carrying an uplink signal indicating a beam failure event of the cell. Here, the spatial reference signal is used to indicate the uplink transmission beam.

[0190] Where K is a preset non-negative integer.

[0191] Optionally, K is agreed upon by the UE and the network side (e.g., protocol agreement). Alternatively, K is indicated to the UE by the base station (e.g., the base station indicates to the UE via RRC signaling, and / or MAC-CE signaling, and / or DCI signaling).

[0192] Optionally, the time unit is a symbol. Alternatively, the time unit is a slot. Of course, other types of time units are also possible.

[0193] Optionally, the specific information includes one of the following or any combination of the following:

[0194] Beam failure recovery response for cells experiencing beam failure;

[0195] The UE receives the uplink grant information (UL grant) after sending the PUCCH that reports the beam failure event of the cell where the beam failure occurred.

[0196] The beam failure recovery response for the cell where the beam failure occurred can be a response relating to the beam failure recovery of that cell. For example, it could be a response relating to a MAC-CE, where the MAC-CE is reported by the UE to the base station, and this MAC-CE is the MAC-CE that sends the identifier of the CC that experienced the beam failure and / or new beam information. Optionally, the identifier of the CC includes the identifier of the cell where the beam failure occurred.

[0197] Optionally, the UL grant includes a UL grant for scheduling transmission of PUSCH in the cell, such as DCI format 0_0, DCI format 0_1, etc. Alternatively, the UL grant includes the first UL grant for scheduling transmission of PUSCH in the cell, such as DCI format 0_0, DCI format 0_1, etc. Alternatively, the UL grant is the first UL grant. Alternatively, the UL grant is a UL grant for scheduling new data. Optionally, the UL grant is a normal UL grant for scheduling new data transmission for the HARQ process of the PUSCH carrying the step 2 MAC-CE, similar to a normal PUSCH "ACK". Alternatively, the UL grant is the first UL grant for scheduling new data. Alternatively, the UL grant is any UL grant.

[0198] Optionally, the specific signal is a signal carrying the specific information. For example, the specific signal may be a MAC-CE response carrying the identifier of the CC reporting the beam failure and / or new beam information, wherein the identifier of the CC that reported the beam failure includes the identifier of the cell. Optionally, the specific signal may be a signal carrying an uplink grant (UL grant) after sending the PUCCH that reported the beam failure event of the cell. The UL grant may be, for example, the first UL grant, or a UL grant for scheduling new data, etc.

[0199] Optionally, the specific signal can also be any PDCCH. Optionally, the PDCCH is a PDCCH that instructs the UE to perform any uplink signal transmission in the cell, such as a PDCCH that instructs the UE to send SRS, a PDCCH that instructs the UE to send PUSCH, etc.

[0200] Optionally, the specific signal may also be a predefined PDCCH. The predefined PDCCH is a PDCCH pre-agreed upon by the base station and the UE (e.g., a protocol agreement), or a PDCCH pre-indicated by the base station to the UE.

[0201] The technical solutions provided in this application may be applicable only to SCell, or only to PCell, or both; this application does not impose any limitations.

[0202] Optionally, the solution of the present invention is used only if the UE determines a new beam for the beam failure cell.

[0203] Optionally, the technical solutions provided in the embodiments of this application can be applied regardless of whether the UE finds a new beam for the beam failure cell.

[0204] Optionally, the technical solution provided in this application embodiment is applicable to all PUCCH resources of the cell.

[0205] Optionally, the technical solution provided in this application embodiment is applicable when the UE receives specific information or signal but does not receive a transmit beam indication information (SpatialRelationInfo) indication or update of PUCCH resources.

[0206] Optionally, the uplink signal is PUCCH (e.g., PUCCH-BFR in step 1).

[0207] In the standard, embodiments of the present invention may also be described in English as follows: If PUCCH-BFR spatial relation information is associated with a DL RS, override with a new beam. If PUCCH-BFR spatial relation information is associated with a UL RS, override with a PUCCH-BFR beam.

[0208] The above description includes the following possible solutions:

[0209] Option 1: Optionally, if the spatial relation info of PUCCH-BFR is associated with a downlink signal, the new beam reported by the UE during beam failure recovery is used to determine the beam of the PUCCH.

[0210] Optionally, if the spatial relation info of the PUCCH-BFR is associated with an uplink signal, the transmit beam of the PUCCH-BFR is used as the transmit beam of the PUCCH.

[0211] Optionally, the PUCCH is a PUCCH transmitted on the cell where the beam failure occurred. For example, the PUCCH is a PUCCH transmitted on the cell where the beam failure occurred starting from the Kth time unit after receiving specific information or a specific signal, or K time units after receiving specific information or a specific signal, or the first time slot after K time units after receiving specific information or a specific signal.

[0212] Optionally, the PUCCH is a PUCCH transmitted on the cell that transmits PUCCH-BFR. For example, the PUCCH is a PUCCH transmitted on the cell where beam failure has occurred, starting from the Kth time unit after receiving specific information or a specific signal, or K time units after receiving specific information or a specific signal, or starting from the first time slot after K time units after receiving specific information or a specific signal.

[0213] Option 2: Optionally, if the spatial relation info of PUCCH-BFR is associated with a downlink signal, then the reference signal corresponding to the new beam reported by the UE during beam failure recovery is used as the beam reference signal for the PUCCH. The beam reference signal is used to determine the transmitted beam.

[0214] Optionally, if the spatial relation info of PUCCH-BFR is associated with an uplink signal, the reference signal corresponding to the new beam reported by the UE during beam failure recovery is used as the beam reference signal for the PUCCH. The beam reference signal is used to determine the transmitted beam.

[0215] The spatial information of an uplink signal can be associated with a downlink signal by indicating a downlink reference signal using the spatial information of the uplink signal. In the protocol, it may be specified that when the spatial information of an uplink signal indicates a downlink reference signal, the transmit spatial filtering of the uplink signal is the same as the receive spatial filtering of the downlink reference signal.

[0216] The spatial information associated with an uplink signal can be implemented by indicating an uplink reference signal using the spatial information of the uplink signal. In the protocol, it may be specified that when the spatial information of an uplink signal indicates an uplink reference signal, the transmit spatial filtering of the uplink signal is the same as the receive spatial filtering of the uplink reference signal. When the UE actually transmits the uplink signal, it can use the same transmit beam as when transmitting the uplink reference signal.

[0217] Optionally, if the spatial relation info of PUCCH-BFR is associated with a downlink signal (e.g., the spatial relation info of PUCCH-BFR indicates a downlink reference signal, and the protocol may specify that the spatial transmission filtering of PUCCH-BFR uses the same method as the reception filtering of the downlink reference signal), then the reference signal corresponding to the new beam reported by the UE during the beam failure recovery process (e.g., the reference signal reported in step 2) is used to overwrite this downlink signal (e.g., the reference signal corresponding to the spatial relation info of PUCCH-BFR is replaced with the reference signal reported by the UE during the beam failure recovery process).

[0218] Optionally, if the spatial relation info of PUCCH-BFR is associated with an uplink signal, the reference signal corresponding to the new beam reported by the UE during beam failure recovery (e.g., the reference signal reported in step 2) is used to overwrite the uplink signal.

[0219] Optionally, if the spatial relation info of PUCCH-BFR is associated with an uplink signal, the spatial relation info of PUCCH-BFR is not replaced.

[0220] One way to associate the spatial relation information of PUCCH-BFR with a downlink signal is that the spatial relation information of PUCCH-BFR indicates a downlink reference signal. The protocol may specify that the spatial transmit filtering of PUCCH-BFR is the same as the spatial receive filtering of that downlink reference signal.

[0221] One way to associate the spatial relation information of PUCCH-BFR with a downlink signal is that the spatial relation information of PUCCH-BFR indicates an uplink reference signal. The protocol may specify that the spatial transmission filter of PUCCH-BFR is the same as the spatial transmission filter of that uplink signal.

[0222] It should be noted that the UE may report a new beam in the form of a reference signal identifier during the beam failure recovery process.

[0223] In the standard, embodiments of the present invention may be described in English as follows: For SCell on which PUCCH-BFR resource is used to send step 1 during the BFR procedure, PUCCH resources are replaced with PUCCH-BFR beam, or nothing is done;

[0224] For other SCell, PUCCH beams are replaced with the new beam reported in step 2MAC-CE.

[0225] The above English description may include:

[0226] Optionally, for a SCell that transmits PUCCH-BFR resources in step 1 of the beam failure recovery process, the transmission beam of the PUCCH resource is the transmission beam of the PUCCH-BFR resource.

[0227] Optionally, for other cells (such as the SCell where the PUCCH-BFR resource of step 1 of the non-BFR process is located, and which is performing BFR), the PUCCH transmission beam is the new beam reported by MAC-CE in step 2 or the transmission beam corresponding to the new beam reported by MAC-CE in step 2.

[0228] Optionally, for the SCell that transmits PUCCH-BFR resources in step 1 of the beam failure recovery process, the reference signal used to determine the transmission beam of the PUCCH resource is set or replaced with the reference signal used to determine the transmission beam of the PUCCH-BFR resource.

[0229] Optionally, for other cells (e.g., the SCell where the PUCCH-BFR resource of step 1 of a non-BFR process is located, the reference signal of the PUCCH is set or replaced with a reference signal used to indicate the new beam reported by the MAC-CE in step 2).

[0230] Optionally, for the SCell where the PUCCH-BFR resource is located in step 1 of the BFR process, the transmission beam of the PUCCH resource is the beam for transmitting PUCCH-BFR.

[0231] Optionally, for other cells (the cells where the PUCCH-BFR resource of step 1 of the non-BFR process is located, and which are performing BFR), the PUCCH transmission beam is the new beam reported by MAC-CE in step 2 or the transmission beam corresponding to the new beam reported by MAC-CE in step 2.

[0232] A PUCCH transmit beam is replaced with a PUCCH-BFR beam in the form of transmitting PUCCH using the transmit beam corresponding to PUCCH-BFR.

[0233] Optionally, for the SCell where the PUCCH-BFR resource is located in step 1 of the BFR process, the signal corresponding to the spatial information related to the PUCCH resource is replaced with the signal corresponding to the spatial information related to the PUCCH-BFR.

[0234] Optionally, for other cells (the cells where the PUCCH-BFR resources of step 1 of the non-BFR process are located, and the cells where BFR is performed), the signal corresponding to the spatial information of PUCCH is replaced with the signal corresponding to the new beam reported by MAC-CE in step 2.

[0235] It should be noted that, in the embodiments of this application, for a cell that has experienced beam failure, from the Kth time unit after receiving specific information or a specific signal, or from the Kth time unit after receiving specific information or a specific signal, the UE assumes that the spatial relational information of the PUCCH transmitted on the cell that has experienced beam failure is the same as the spatial relational information of the uplink signal that sent the beam failure event of the cell.

[0236] The following are examples of specific embodiments:

[0237] Option 1: For a cell that has experienced a beam failure, starting from the Kth symbol after receiving the response corresponding to a specific MAC-CE, the UE uses the uplink transmit beam used by the PUCCH resource (PUCCH-BFR in step 1) that transmitted the beam failure event of the cell to transmit the PUCCH on that cell.

[0238] Optionally, the specific MAC-CE mentioned in the embodiments of this application may be, for example, a MAC-CE that reports the identifier of the CC that has experienced beam failure and / or new beam information, and the identifier of the CC that has experienced beam failure reported by the specific MAC-CE includes the identifier of the cell (i.e., the MAC-CE in step 2).

[0239] Option 2: For a cell that has experienced a beam failure, after receiving K symbols following a response corresponding to a specific MAC-CE, the UE uses the uplink transmit beam of the PUCCH resource (PUCCH-BFR in step 1) that transmitted the beam failure event of the cell to transmit the PUCCH on that cell. The specific MAC-CE is the MAC-CE that reports the identifier of the CC that experienced the beam failure and / or new beam information, and the identifier of the CC that experienced the beam failure reported by the specific MAC-CE includes the identifier of the cell (MAC-CE in step 2).

[0240] For options 1 and 2:

[0241] Optionally, the solution applies only to SCell. Alternatively, the solution applies to both SCell and PCell.

[0242] Optionally, Scheme 1 or Scheme 2 may be applied only if the UE determines a new beam for the beam failure cell.

[0243] Optionally, either Scheme 1 or Scheme 2 can be applied regardless of whether the UE finds a new beam for the beam-failed cell.

[0244] Optionally, Scheme 1 and Scheme 2 are applicable to all PUCCH resources in the cell where beam failure occurs.

[0245] Optionally, Schemes 1 and 2 only apply to PUCCH resources in cells where beam failure has occurred that have not received a transmit beam indication information (SpatialRelationInfo) indication or update after the UE transmits the MAC-CE in step 2. After receiving the Kth symbol following the response to the MAC-CE in step 2 corresponding to the cell, if the base station transmits an uplink transmit beam indication or update information for a PUCCH resource on the cell, the UE transmits the PUCCH using the uplink transmit beam indicated by the base station.

[0246] Optionally, if the UE receives a signal of a specific PDCCH (i.e., any or predefined PDCCH mentioned above), it considers that it has received a response corresponding to a specific MAC-CE. The specific PDCCH can be indicated to the UE by the base station or pre-agreed upon.

[0247] Optionally, if the UE receives a PDCCH signal from any PUSCH transmission of the cell, it considers that it has received a response corresponding to a specific MAC-CE.

[0248] Optionally, if the UE receives any PDCCH signal used to schedule or trigger uplink signal transmission in the cell, it considers that it has received a response corresponding to a specific MAC-CE.

[0249] Optionally, if the UE receives any PDCCH signal, it considers that it has received a response corresponding to a specific MAC-CE.

[0250] Option 3: For any cell that has experienced a beam failure, starting from the Kth symbol after the UE sends the PUCCH that reports the beam failure event of the cell and receives an uplink grant message (UL grant), the UE uses the uplink transmit beam used by the PUCCH resource that reported the beam failure event of the cell (PUCCH-BFR in step 1) to transmit the PUCCH on the cell.

[0251] Option 4: For any cell that has experienced a beam failure, after the UE sends a PUCCH reporting the beam failure event of the cell and receives the Kth symbol after an uplink grant message (UL grant), the UE uses the uplink transmit beam used by the PUCCH resource that reported the beam failure event of the cell (PUCCH-BFR in step 1) to transmit the PUCCH on the cell.

[0252] For options 3 and 4:

[0253] Optionally, Schemes 3 and 4 apply only to SCell. Alternatively, Schemes 3 and 4 apply to both SCell and PCell.

[0254] Optionally, Scheme 3 or Scheme 4 may be applied only if the UE determines a new beam for the beam failure cell.

[0255] Optionally, either Scheme 3 or Scheme 4 can be applied regardless of whether the UE finds a new beam for the beam-failed cell.

[0256] Optionally, Schemes 3 and 4 apply to all PUCCH resources of the cell where beam failure occurs.

[0257] Optionally, the UL grant may be a UL grant for scheduling the PUSCH of the cell where beam failure has occurred, that is, the UL grant schedules the UE to send the PUSCH in the cell where beam failure has occurred.

[0258] Optionally, the UL grant is a UL grant that indicates that the transmission of PUSCH is new data transmission (e.g., a New data indicator (NDI) in the Downlink Control Information (DCI) indicates that new data is being transmitted) (i.e., a UL grant that schedules new data).

[0259] Optionally, the UL grant is a normal uplink grant to schedule a new transmission for the same HARQ process as the PUSCH carrying the step 2 MAC-CE, which is the same as normal “ACK” for PUSCH.

[0260] Optionally, the UL grant can be any UL grant (regardless of whether the transmission of PUSCH is for new data transmission or data retransmission).

[0261] Optionally, the UL grant is DCI format 0_0.

[0262] Optionally, the UL grant is DCI format 0_1.

[0263] Optionally, the UL grant is DCI format 0_0 or DCI format 0_1.

[0264] Optionally, the UL grant is the first UL grant.

[0265] The following are some examples illustrating the timing of the UE receiving specific information or signals in the embodiments of this application:

[0266] Example 1:

[0267] like Figure 1 As shown, the PDCCH containing the UL grant ends at time t2. Starting from t2+K, the UE uses the PUCCH transmission beam mentioned in step 1 to transmit the PUCCH of the cell where the beam failure occurred.

[0268] Example 2:

[0269] like Figure 2 As shown, the end time of the UL grant is t2. The UE starts from t2+K and uses the PUCCH transmission beam mentioned in step 1 to transmit the PUCCH of the cell where the beam failure occurred.

[0270] Example 3:

[0271] like Figure 3 As shown, the UL grant and PDCCH are transmitted in slot n. Starting from slot n+K, the UE uses the transmit beam of the PUCCH mentioned in step 1 to transmit the PUCCH of the cell where the beam failure occurred. Here, n is any integer greater than or equal to zero.

[0272] Example 4:

[0273] like Figure 4 As shown, the UL grant and PDCCH are transmitted in time slot n. The PDCCH ends at time t2. Starting from the first time slot X after t2+K symbols, the UE uses the PUCCH transmission beam mentioned in step 1 to transmit the PUCCH of the cell where the beam failure occurred. Here, n and X are any integers greater than or equal to zero.

[0274] Example 5:

[0275] like Figure 5 As shown, the UL grant starts at time t1, and the UE starts transmitting the PUCCH of the cell where the beam failure occurred using the PUCCH transmission beam mentioned in step 1 from time t1+K.

[0276] It should be noted that the above examples only illustrate the case where the specific information is a UL grant, and do not illustrate the case where the specific information is a beam failure recovery response. The case where the specific information is a beam failure recovery response is similar to that of a UL grant, and will not be elaborated upon here.

[0277] In summary, see Figure 6 On the terminal side, the signal transmission method provided in this application embodiment includes:

[0278] S101, Beam failure has been detected in the cell;

[0279] S102. If the terminal needs to send a Physical Uplink Control Channel (PUCCH) signal, then when preset conditions are met, the PUCCH signal is sent using an uplink transmit beam, wherein the uplink transmit beam includes:

[0280] A beam used to transmit at least one of the following: a beam failure event of the cell, the identifier of the cell, and a new beam of the cell;

[0281] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal used to carry the beam failure event of the cell;

[0282] Alternatively, a beam used to transmit the cell's identifier and / or a new beam;

[0283] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal carrying the cell's identifier and / or the new beam;

[0284] Alternatively, the uplink beam corresponding to the new beam of the reported cell.

[0285] Optionally, the preset conditions include:

[0286] Received specific information or signals.

[0287] Optionally, when preset conditions are met, the physical uplink control channel (PUCCH) is transmitted using the uplink transmit beam, specifically including:

[0288] Starting from the Kth time unit after receiving specific information or signals, the Physical Uplink Control Channel (PUCCH) is transmitted using the uplink transmit beam;

[0289] Alternatively, after receiving specific information or signals for K time units, the Physical Uplink Control Channel (PUCCH) can be transmitted using the uplink transmit beam;

[0290] Where K is a preset non-negative integer.

[0291] Optionally, after receiving specific information or signals for K time units, the Physical Uplink Control Channel (PUCCH) is transmitted using the uplink transmit beam. Specifically, this includes transmitting the PUCCH using the uplink transmit beam starting from the first time slot after receiving specific information or signals for K time units.

[0292] Optionally, the specific information includes one of the following or any combination of the following:

[0293] The cell's beam failure recovery response;

[0294] The terminal receives the uplink grant message ULgrant after sending the PUCCH that reports the beam failure event of the cell.

[0295] Optionally, the specific signal is a signal carrying the specific information.

[0296] Optionally, the specific signal is the Physical Downlink Control Channel (PDCCH) signal.

[0297] Accordingly, see Figure 7 On the network side, the signal receiving method provided in this application embodiment includes:

[0298] S201. When a beam failure occurs in a cell, the receiving terminal reports the beam failure event of the cell.

[0299] S202, The receiving terminal transmits the Physical Uplink Control Channel (PUCCH) signal via an uplink transmit beam; wherein, the uplink transmit beam includes:

[0300] A beam used to transmit at least one of the following: a beam failure event of the cell, the identifier of the cell, and a new beam of the cell;

[0301] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal used to carry the beam failure event of the cell;

[0302] Alternatively, a beam used to transmit the cell's identifier and / or a new beam;

[0303] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal carrying the cell's identifier and / or the new beam;

[0304] Alternatively, the uplink beam corresponding to the new beam of the reported cell.

[0305] Optionally, the method further includes: sending specific information or a specific signal to the terminal;

[0306] Optionally, the PUCCH is a PUCCH that the terminal transmits using the uplink transmit beam, starting from the Kth time unit after receiving specific information or a specific signal;

[0307] Alternatively, the PUCCH is a PUCCH that the terminal transmits using the uplink transmit beam after receiving specific information or a specific signal for K time units.

[0308] Where K is a preset non-negative integer.

[0309] Optionally, the specific information includes one of the following or any combination of the following:

[0310] The cell's beam failure recovery response;

[0311] The terminal receives the uplink grant message ULgrant after sending the PUCCH that reports the beam failure event of the cell.

[0312] Optionally, the specific signal is the Physical Downlink Control Channel (PDCCH) signal.

[0313] Optionally, the receiving terminal transmits a Physical Uplink Control Channel (PUCCH) via an uplink transmit beam, including:

[0314] The receiving terminal uses the receiving beam corresponding to the uplink transmit beam to transmit the physical uplink control channel (PUCCH).

[0315] See Figure 8 On the terminal side, the signal transmitting device provided in this application embodiment includes:

[0316] Determining unit 11 is used to determine if a beam failure has occurred in the cell;

[0317] Transmitting unit 12 is configured to transmit the Physical Uplink Control Channel (PUCCH) signal using an uplink transmit beam when a preset condition is met, provided that the terminal needs to transmit the PUCCH signal. The uplink transmit beam includes:

[0318] A beam used to transmit at least one of the following: a beam failure event of the cell, the identifier of the cell, and a new beam of the cell;

[0319] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal used to carry the beam failure event of the cell;

[0320] Alternatively, a beam used to transmit the cell's identifier and / or a new beam;

[0321] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal carrying the cell's identifier and / or the new beam;

[0322] Alternatively, the uplink beam corresponding to the new beam of the reported cell.

[0323] It should be noted that the unit in this signal transmitting device has the function of executing all the processes mentioned in the above-described terminal-side signal transmitting method, which will not be repeated here.

[0324] Accordingly, see Figure 9 On the network side, the signal receiving device provided in this application embodiment includes:

[0325] The first unit 21 is used to receive the beam failure event of the cell reported by the terminal when a beam failure occurs in the cell.

[0326] The second unit 22 is used to receive the Physical Uplink Control Channel (PUCCH) signal transmitted by the terminal through the uplink transmit beam; wherein, the uplink transmit beam includes:

[0327] A beam used to transmit at least one of the following: a beam failure event of the cell, the identifier of the cell, and a new beam of the cell;

[0328] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal used to carry the beam failure event of the cell;

[0329] Alternatively, a beam used to transmit the cell's identifier and / or a new beam;

[0330] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal carrying the cell's identifier and / or the new beam;

[0331] Alternatively, the uplink beam corresponding to the new beam of the reported cell.

[0332] It should be noted that the unit in this signal receiving device has the function of performing all the processes mentioned in the above network-side signal receiving method, which will not be repeated here.

[0333] See Figure 10 On the terminal side, another signal transmitting device provided in this application embodiment includes:

[0334] Processor 600 is used to read the program from memory 620 and execute the following procedures:

[0335] The cell has been confirmed to have experienced beamout failure.

[0336] If the terminal needs to transmit the Physical Uplink Control Channel (PUCCH) signal, then when preset conditions are met, the PUCCH signal is transmitted using an uplink transmit beam, wherein the uplink transmit beam includes:

[0337] A beam used to transmit at least one of the following: a beam failure event of the cell, the identifier of the cell, and a new beam of the cell;

[0338] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal used to carry the beam failure event of the cell;

[0339] Alternatively, a beam used to transmit the cell's identifier and / or a new beam;

[0340] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal carrying the cell's identifier and / or the new beam;

[0341] Alternatively, the uplink beam corresponding to the new beam of the reported cell.

[0342] Optionally, the preset conditions include:

[0343] Received specific information or signals.

[0344] Optionally, when preset conditions are met, the Physical Uplink Control Channel (PUCCH) is transmitted via transceiver 610 using the uplink transmit beam, specifically including:

[0345] Starting from the Kth time unit after receiving specific information or a specific signal through transceiver 610, the physical uplink control channel PUCCH is transmitted through transceiver 610 using the uplink transmit beam.

[0346] Alternatively, after receiving specific information or signals through transceiver 610 for K time units, the physical uplink control channel PUCCH can be transmitted through transceiver 610 using the uplink transmit beam.

[0347] Where K is a preset non-negative integer.

[0348] Optionally, after receiving specific information or a specific signal for K time units through transceiver 610, the physical uplink control channel PUCCH is transmitted through transceiver 610 using the uplink transmit beam. Specifically, starting from the first time slot after receiving specific information or a specific signal for K time units through transceiver 610, the physical uplink control channel PUCCH is transmitted through transceiver 610 using the uplink transmit beam.

[0349] Optionally, the specific information includes one of the following or any combination of the following:

[0350] The cell's beam failure recovery response;

[0351] The terminal receives the uplink grant message ULgrant after sending the PUCCH that reports the beam failure event of the cell.

[0352] Optionally, the specific signal is a signal carrying the specific information.

[0353] Optionally, the specific signal is the Physical Downlink Control Channel (PDCCH) signal.

[0354] Transceiver 610 is used to receive and send data under the control of processor 600.

[0355] Among them, Figure 10In this context, the bus architecture can include any number of interconnected buses and bridges, specifically linking various circuits of one or more processors represented by processor 600 and memory represented by memory 620 together. The bus architecture can also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 610 can be multiple elements, including transmitters and receivers, providing a unit for communicating with various other devices over a transmission medium. For different user equipment, the user interface 630 can also be an interface capable of connecting external or internal devices, including but not limited to keypads, displays, speakers, microphones, joysticks, etc.

[0356] The processor 600 is responsible for managing the bus architecture and general processing, while the memory 620 can store the data used by the processor 600 when performing operations.

[0357] Optionally, the processor 600 may be a CPU (Central Processing Unit), an ASIC (Application Specific Integrated Circuit), an FPGA (Field-Programmable Gate Array), or a CPLD (Complex Programmable Logic Device).

[0358] Accordingly, see Figure 11 On the network side, another signal receiving device provided in this application embodiment includes:

[0359] Processor 500 is used to read the program from memory 520 and execute the following procedures:

[0360] When a beam failure occurs in a cell, the transceiver 510 receives the beam failure event of the cell reported by the terminal.

[0361] The transceiver 510 receives the Physical Uplink Control Channel (PUCCH) signal transmitted via an uplink transmit beam from the terminal; wherein the uplink transmit beam includes:

[0362] A beam used to transmit at least one of the following: a beam failure event of the cell, the identifier of the cell, and a new beam of the cell;

[0363] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal used to carry the beam failure event of the cell;

[0364] Alternatively, a beam used to transmit the cell's identifier and / or a new beam;

[0365] Alternatively, the uplink beam corresponding to the spatially relevant information of the signal carrying the cell's identifier and / or the new beam;

[0366] Alternatively, the uplink beam corresponding to the new beam of the reported cell.

[0367] Optionally, the processor 500 is also used to read the program in the memory 520 and execute the following process: sending specific information or specific signals to the terminal via the transceiver 510;

[0368] Optionally, the PUCCH is a PUCCH that the terminal transmits using the uplink transmit beam, starting from the Kth time unit after receiving specific information or a specific signal;

[0369] Alternatively, the PUCCH is a PUCCH that the terminal transmits using the uplink transmit beam after receiving specific information or a specific signal for K time units.

[0370] Where K is a preset non-negative integer.

[0371] Optionally, the specific information includes one of the following or any combination of the following:

[0372] The cell's beam failure recovery response;

[0373] The terminal receives the uplink grant message ULgrant after sending the PUCCH that reports the beam failure event of the cell.

[0374] Optionally, the specific signal is the Physical Downlink Control Channel (PDCCH) signal.

[0375] Optionally, the Physical Uplink Control Channel (PUCCH) transmitted by the transceiver 510 terminal via the uplink transmit beam includes:

[0376] Using the receive beam corresponding to the uplink transmit beam, the transceiver 510 receives the physical uplink control channel (PUCCH) transmitted by the terminal via the uplink transmit beam.

[0377] Transceiver 510 is used to receive and send data under the control of processor 500.

[0378] Among them, Figure 11In this context, the bus architecture may include any number of interconnected buses and bridges, specifically linking various circuits together, represented by one or more processors (processor 500) and memory (memory 520). The bus architecture may also link various other circuits such as peripheral devices, voltage regulators, and power management circuits, which are well known in the art and therefore will not be described further herein. The bus interface provides an interface. The transceiver 510 may be multiple elements, including transmitters and receivers, providing a unit for communicating with various other devices 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 during operation.

[0379] The processor 500 can be a central processing unit (CPU), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or a complex programmable logic device (CPLD).

[0380] It should be noted that the division of units in the embodiments of this application is illustrative and only represents one logical functional division. In actual implementation, other division methods may be used. Furthermore, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated units described above can be implemented in hardware or as software functional units.

[0381] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute all or part of the steps of the methods described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0382] This application provides a computing device, which may specifically be a desktop computer, portable computer, smartphone, tablet computer, personal digital assistant (PDA), etc. The computing device may include a central processing unit (CPU), memory, input / output devices, etc. Input devices may include a keyboard, mouse, touchscreen, etc., and output devices may include display devices, such as a liquid crystal display (LCD) or a cathode ray tube (CRT).

[0383] 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 this application, the memory may be used to store the program of any of the methods provided in the embodiments of this application.

[0384] The processor executes any of the methods described in the embodiments of this application according to the program instructions stored in the memory.

[0385] This application provides a computer storage medium for storing computer program instructions used by the apparatus provided in the above-described embodiments, which includes a program for executing any of the methods provided in the above-described embodiments.

[0386] The computer storage medium can be any available medium or data storage device that a computer can access, including but not limited to magnetic storage (e.g., floppy disks, hard disks, magnetic tapes, magneto-optical disks (MO), etc.), optical storage (e.g., CDs, DVDs, BDs, HVDs, etc.), and semiconductor storage (e.g., ROMs, EPROMs, EEPROMs, non-volatile memory (NAND flash), solid-state drives (SSDs)).

[0387] The method provided in this application can be applied to terminal devices or network devices.

[0388] The terminal equipment can also be called user equipment (UE), mobile station (MS), mobile terminal, etc. Optionally, the terminal can have the ability to communicate with one or more core networks via a radio access network (RAN). For example, the terminal can be a mobile phone (or "cellular" phone) or a mobile computer. For example, the terminal can also be a portable, pocket-sized, handheld, computer-embedded, or vehicle-mounted mobile device.

[0389] Network equipment can be a base station (e.g., an access point), referring to a device in an access network that communicates with a wireless terminal via one or more sectors on the air interface. A base station can be used to convert received air frames to and from IP packets, acting as a router between the wireless terminal and the rest of the access network, which may include an Internet Protocol (IP) network. The base station can also coordinate the management of air interface attributes. For example, a base station can be a base station (BTS, Base Transceiver Station) in GSM or CDMA, a base station (NodeB) in WCDMA, an evolved Node B (NodeB, eNB, or e-NodeB) in LTE, or a gNB in ​​a 5G system, etc. This application does not impose limitations on the embodiments described.

[0390] The above processing flow can be implemented using a software program, which can be stored in a storage medium. When the stored software program is invoked, the above method steps are executed.

[0391] In summary, compared with the prior art, the embodiments of this application propose some schemes for determining the PUCCH signal transmission beam after the UE experiences beam failure in the cell. This allows the UE to use a better uplink transmission beam to transmit the PUCCH, and the UE and the network side have the same consensus on the uplink signal transmission beam, thereby enabling the base station to use the optimal reception beam to receive the uplink signal.

[0392] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product implemented on one or more computer-usable storage media (including, but not limited to, disk storage and optical storage) containing computer-usable program code.

[0393] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can 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, generate instructions for implementing the flowchart... Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0394] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0395] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0396] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A signal transmission method, characterized in that, The method includes: The cell has been confirmed to have experienced beamout failure. After receiving the Physical Downlink Control Channel (PDCCH) signal for K time units, the uplink transmit beam transmits the Physical Uplink Control Channel (PUCCH) signal in the cell where the beam failure occurred. Wherein, when the spatial information related to the PUCCH signal is associated with the downlink signal, the uplink transmission beam is the uplink beam corresponding to the new beam of the reported cell; K is a preset non-negative integer.

2. The method according to claim 1, characterized in that, After receiving the Physical Downlink Control Channel (PDCCH) signal for K time units, the Physical Uplink Control Channel (PUCCH) signal is transmitted in the cell where beam failure occurred using the uplink transmit beam. Specifically, this includes: Starting from the first time slot after receiving the Physical Downlink Control Channel (PDCCH) signal for K time units, the PUCCH signal is transmitted using the uplink transmit beam in the cell where beam failure occurred.

3. A signal receiving method, characterized in that, The method includes: When a beam failure occurs in a cell, the receiving terminal reports the beam failure event of that cell. Receive the Physical Uplink Control Channel (PUCCH) signal transmitted by the terminal via the uplink transmit beam; Wherein, when the spatial information related to the Physical Uplink Control Channel (PUCCH) signal is associated with the downlink signal, the uplink transmission beam is the uplink beam corresponding to the new beam of the reported cell; The PUCCH signal is a PUCCH signal transmitted by the terminal in the cell where beam failure occurred, using the uplink transmit beam, after receiving the Physical Downlink Control Channel (PDCCH) signal for K time units; where K is a preset non-negative integer.

4. The method according to claim 3, characterized in that, Receiving the Physical Uplink Control Channel (PUCCH) signal transmitted by the terminal via the uplink transmit beam includes: The terminal receives the PUCCH signal transmitted via the uplink transmit beam using the receive beam corresponding to the uplink transmit beam.

5. A signal transmitting device, characterized in that, include: The determination unit is used to determine when a beam failure has occurred in a cell. The transmitting unit is used to transmit the physical uplink control channel (PUCCH) signal in the cell where beam failure has occurred using the uplink transmitting beam after receiving the physical downlink control channel (PDCCH) signal for K time units; Wherein, when the spatial information related to the PUCCH signal is associated with the downlink signal, the uplink transmission beam is the uplink beam corresponding to the new beam of the reported cell; K is a preset non-negative integer.

6. The signal transmitting device according to claim 5, characterized in that, The sending unit is specifically used for: Starting from the first time slot after receiving the Physical Downlink Control Channel (PDCCH) signal for K time units, the PUCCH signal is transmitted using the uplink transmit beam in the cell where beam failure occurred.

7. A signal receiving device, characterized in that, include: The first unit is used to receive the beam failure event of the cell reported by the terminal when a beam failure occurs in the cell. The second unit is used to receive the Physical Uplink Control Channel (PUCCH) signal transmitted by the terminal through the uplink transmit beam; Wherein, when the spatial information related to the Physical Uplink Control Channel (PUCCH) signal is associated with the downlink signal, the uplink transmission beam is the uplink beam corresponding to the new beam of the reported cell; The PUCCH signal is a PUCCH signal transmitted by the terminal in the cell where beam failure occurred, using the uplink transmit beam, after receiving the Physical Downlink Control Channel (PDCCH) signal for K time units; where K is a preset non-negative integer.

8. The signal receiving device according to claim 7, characterized in that, The second unit is specifically used for: The terminal receives the PUCCH signal transmitted via the uplink transmit beam using the receive beam corresponding to the uplink transmit beam.

9. A signal transmitting device, characterized in that, include: Memory, used to store program instructions; A transceiver is used to send and receive signals. The processor is configured to call program instructions stored in the memory and execute them according to the obtained program: The cell has been confirmed to have experienced beamout failure. After receiving the Physical Downlink Control Channel (PDCCH) signal for K time units, the uplink transmit beam transmits the Physical Uplink Control Channel (PUCCH) signal in the cell where the beam failure occurred; wherein, when the spatial information related to the PUCCH signal is associated with the downlink signal, the uplink transmit beam is the uplink beam corresponding to the new beam reported for the cell; and K is a preset non-negative integer.

10. The apparatus according to claim 9, characterized in that, The transceiver is specifically used to: starting from the first time slot after receiving the Physical Downlink Control Channel (PDCCH) signal for K time units, use the uplink transmit beam to transmit the PUCCH signal in the cell where the beam failure occurred.

11. A signal receiving device, characterized in that, include: Memory, used to store program instructions; A transceiver is used to send and receive signals. The processor is configured to call program instructions stored in the memory and execute them according to the obtained program: When a beam failure occurs in a cell, the receiving terminal reports the beam failure event of that cell. The terminal receives the Physical Uplink Control Channel (PUCCH) signal transmitted via the uplink transmit beam; wherein, when the spatial information related to the PUCCH signal is associated with the downlink signal, the uplink transmit beam is the uplink beam corresponding to the new beam of the reported cell. The PUCCH signal is a PUCCH signal transmitted by the terminal in the cell where beam failure occurred, using the uplink transmit beam, after receiving the Physical Downlink Control Channel (PDCCH) signal for K time units; where K is a preset non-negative integer.

12. The apparatus according to claim 11, characterized in that, The transceiver is specifically used for: The terminal receives the PUCCH signal transmitted via the uplink transmit beam using the receive beam corresponding to the uplink transmit beam.

13. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions for causing the computer to perform the method of any one of claims 1 to 4.

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