Communication method and communications apparatus
Patent Information
- Authority / Receiving Office
- MY · MY
- Patent Type
- Patents
- Current Assignee / Owner
- Filing Date
- 2020-07-30
- Publication Date
- 2026-07-17
Abstract
Description
A communication method and a communication device
[0001] This application claims priority to Chinese Patent Application No. 201910713406.7, filed on August 2, 2019, entitled "A Communication Method and Communication Device", the entire contents of which are incorporated herein by reference. Technical Field
[0002] This application relates to the field of communications, specifically to a communication method and a communication device. Background Technology
[0003] During communication, beam blocking may occur, preventing signal transmission. To prevent sudden communication interruptions in the event of beam blocking, a mechanism is introduced to detect beam quality and quickly restore the link in case of obstruction.
[0004] In existing technologies, terminal devices perform beam failure detection. After determining that a beam has failed, the terminal device sends a beam failure recovery request (BFRQ) message (or link failure recovery request message) to the network device. Through this BFRQ message, the terminal device can indicate information such as the cell information of the cell where the link failed to the network device.
[0005] Before the terminal device sends BFRQ information, the network device cannot know how many cells have experienced link failures. Therefore, resources are usually reserved or the information format is designed according to the maximum number of cells that may experience link failures, which may lead to a waste of resources.
[0006] Summary of the Invention
[0007] This application provides a communication method and a communication device, which aims to reduce the waste of reporting resources when a terminal device reports information about a cell with a failed link.
[0008] Firstly, a communication method is provided. This communication method can be executed by a terminal device, or by a chip or circuit configured in the terminal device; this application does not limit this.
[0009] The communication method may include: determining that at least one cell has a link failure; sending first indication information, the first indication information indicating information about the link-failed cell, wherein the first indication information is determined based on the situation of the link-failed cell.
[0010] Optionally, the first indication information is determined based on the situation of the link-failed cell. It can be that the first indication information is determined directly based on the situation of the link-failed cell, or it can be determined indirectly based on the situation of the link-failed cell.
[0011] The first indication information indicates information about the cell with the failed link. This can be understood as including information about the cell with the failed link.
[0012] Optionally, the information of a link-failed cell may include: identification information of the link-failed cell, and / or, reference signal information, wherein the reference signal information is used to restore the link of the link-failed cell. The reference signal information may include a reference signal resource index and / or the channel quality of the reference signal (such as one or more of the following: RSRP, SINR, RSRQ, CQI, or SNR, etc.). For example, reference signal resources may include CSI-RS resources and / or SSB resources. Reference signal information can be understood as reference signal resource information, which includes the index of the reference signal resource and / or the channel quality of the reference signal on that reference signal resource (such as one or more of the following: RSRP, SINR, RSRQ, CQI, or SNR, etc.).
[0013] Based on the above scheme, the first indication information sent by the terminal device, i.e., the cell information indicating a cell with a failed link, can be generated based on the situation of the cell with the failed link. For example, the format of the first indication information to be sent can be determined based on the situation of the cell with the failed link. That is, by designing a variable-length information format to indicate the cell information of the cell with the failed link, the terminal device can adaptively adjust the size or format of the first indication information it sends, effectively reducing the reporting of redundant information and lowering the reporting overhead. Furthermore, determining the resources to carry the first indication information based on the situation of the cell with the failed link allows for the rational allocation of resources to carry the first indication information, reducing resource waste and improving resource utilization.
[0014] In conjunction with the first aspect, in some implementations of the first aspect, before sending the first indication information, the communication method further includes: sending second indication information on the corresponding second resource according to the situation of the cell with link failure, the second indication information indicating that the cell link has failed.
[0015] Optionally, the first indication information is determined based on the situation of the link-failed cell. It can be that the first indication information is indirectly determined based on the situation of the link-failed cell. For example, the first indication information can be determined based on the content of the second indication information, or the first indication information can be determined based on the second resource carrying the second indication information.
[0016] Optionally, multiple second resources are associated with the cases of link-failed cells. The terminal device selects an appropriate second resource and sends second indication information based on the case of the link-failed cell and the associated relationship. This associated relationship can be predefined, such as by pre-configuration of network devices or by pre-defined protocols; there is no limitation on this.
[0017] Optionally, the second indication information indicating cell link failure can mean: the second indication information notifies the network device of a cell link failure; or, the second indication information can also indicate the situation of cell link failure of the network device.
[0018] Optionally, the second indication information indicating cell link failure can be expressed as: the second indication information indicates that the link of at least one of L cells has failed, where L is an integer greater than 1.
[0019] Optionally, the second indication information indicating cell link failure can be represented as: the cell identifiers of the N cells whose links have failed, as indicated by the second indication information.
[0020] Based on the above scheme, the terminal device sends a second indication information on the corresponding second resource according to the situation of the cell with the failed link, so that the network device can also know the situation of the cell with the failed link according to the second resource.
[0021] In conjunction with the first aspect, in some implementations of the first aspect, the second instruction information is used to request a first resource carrying the first instruction information.
[0022] Based on the above scheme, the terminal device sends a second indication information on the corresponding second resource according to the situation of the cell with the failed link. As a result, the network device can also allocate a suitable amount of first resource to the terminal device according to the second resource, which can effectively save resource overhead and improve resource utilization.
[0023] It should be understood that when the terminal device requests the allocation of the first resource from the network device, it means that the terminal device is requesting the network device to allocate resources for carrying the first instruction information, and does not mean that it is requesting a specific block of resources.
[0024] In conjunction with the first aspect, in some implementations of the first aspect, the communication method further includes: sending second indication information on a third resource, wherein the second indication information is used to request a first resource carrying the first indication information.
[0025] Optionally, the third resource can be a pre-allocated resource for the terminal device, used by the terminal device to notify the network device of a cell link failure.
[0026] Based on the above scheme, the terminal device can also request the allocation of a first resource carrying the first indication information from the network device through the content of the second indication information. For example, when the cyclic shift of the sequence of the second indication information is a first cyclic shift, a smaller first resource can be allocated to the terminal device; when the cyclic shift of the sequence of the second indication information is a second cyclic shift, a larger first resource can be allocated to the terminal device. Furthermore, when the state value of the second indication information is a first value, a smaller first resource can be allocated to the terminal device; when the state value of the second indication information is a second value, a larger first resource can be allocated to the terminal device.
[0027] In conjunction with the first aspect, in some implementations of the first aspect, before sending the first indication information, the communication method further includes: receiving third indication information, the third indication information indicating a first resource carrying the first indication information.
[0028] It should be understood that when a network device allocates the first resource to a terminal device, it means that the network device has allocated a certain block of resources to the terminal device to carry the first instruction information, which can represent a specific block of resources.
[0029] In conjunction with the first aspect, in some implementations of the first aspect, the first resource carries the first instruction information in a corresponding format.
[0030] In other words, send the first instruction information in the corresponding format on the first resource.
[0031] Optionally, the format of the first indication information corresponds to the resources allocated by the network device to carry the first indication information. For example, when the network device allocates less resources to carry the first indication information, the format of the first indication information is short; when the network device allocates more resources to carry the first indication information, the format of the first indication information is long. Specific embodiments are described below.
[0032] Based on the above scheme, a variable-length information format can be designed to indicate cell information of link failure, and a first indication information of the corresponding format can be sent on the first resource, thereby reducing resource waste.
[0033] In conjunction with the first aspect, in some implementations of the first aspect, the first indication information is determined based on the situation of the link-failed cell, including: the format of the first indication information is determined based on the situation of the link-failed cell; and / or, the resources carrying the first indication information are determined based on the situation of the link-failed cell.
[0034] Based on the above solution, an information format with variable length can be designed to indicate the cell information of link failure, and according to the situation of the link failure cell, a first indication information in a suitable format is selected, thereby reducing waste of resources. In addition, based on the situation of the link failure cell, resources of a suitable size can be used to carry the first indication information, thereby improving resource utilization rate and reducing waste of resources.
[0035] Combined with the first aspect, in some implementation manners of the first aspect, the format of the first indication information is the first format or the second format, wherein the first format and the second format satisfy one or more of the following: the number of bits occupied by the first indication information in the first format is less than the number of bits occupied by the first indication information in the second format; the first indication information in the first format indicates the information of N1 link failure cells, and the first indication information in the second format indicates the information of N2 link failure cells, where N1 and N2 are integers greater than or equal to 1, and N1 < N2; or, the information payload included in the first indication information in the first format is less than the information payload included in the first indication information in the second format.
[0036] The above number of bits, the number of pieces of information of link failure cells, and the payload can all refer to the maximum value. For example, the number of bits occupied by the first indication information in the first format represents the maximum number of bits that the first indication information in this format can send.
[0037] Combined with the first aspect, in some implementation manners of the first aspect, the format of the first indication information is the first format, and the first indication information in the first format includes one or more of the following information: a serving cell identification field, a first field, or a second field; wherein the serving cell identification field indicates the identification of the link failure cell through a status value, the first field indicates whether there is a corresponding second field for the link failure cell indicated by the serving cell identification field, and the second field indicates the reference signal information for restoring the link of the link failure cell indicated by the serving cell identification field.
[0038] It should be understood that the serving cell identification field indicating the link failure cell may be that the serving cell identification field indicates one or more link failure cells, and it is not limited to one cell here.
[0039] Optionally, each cell indicated in the serving cell ID field may have a corresponding first field. For example, the link failure cells include a first cell and a second cell, and the serving cell identification field indicates that the first cell and the second cell have link failures. The first field corresponding to the first cell indicates whether there is a second field for the first cell, and the first field corresponding to the second cell indicates whether there is a second field for the second cell.
[0040] In conjunction with the first aspect, in some implementations of the first aspect, the format of the first indication information is a second format, and the first indication information in the second format includes one or more of the following information: a serving cell identifier field, a first field, or a second field; wherein, the serving cell identifier field indicates the identifier of the link-failed cell through a bitmap, the first field indicates whether there is a corresponding second field for the link-failed cell indicated by the serving cell identifier field, and the second field indicates reference signal information for restoring the link of the link-failed cell indicated by the serving cell identifier field.
[0041] In conjunction with the first aspect, in some implementations of the first aspect, when the condition of the link-failed cell meets a preset condition, the first indication information indicates the identifier of the link-failed cell by means of a status value; and / or, when the condition of the link-failed cell does not meet the preset condition, the first indication information indicates the identifier of the link-failed cell by means of a bitmap.
[0042] In conjunction with the first aspect, in some implementations of the first aspect, the preset conditions include: the number of link-failed cells is less than or equal to a preset first threshold, or the payload of the information of the link-failed cells is less than or equal to a preset second threshold.
[0043] Optionally, the preset first threshold or the preset second threshold can be predefined, such as by a protocol or network device; or it can be configured by the network device for the terminal device; or it can be an empirical value, etc., and there is no limitation on this.
[0044] In conjunction with the first aspect, in some implementations of the first aspect, the situation of the link-failed cells includes: the number of link-failed cells and / or the payload of information about the link-failed cells.
[0045] Based on the above scheme, the first indication information for reporting information about cells with link failures can be determined based on one or more of the following: the number of cells with link failures, the payload of information about the cells with link failures, whether a reference signal for restoring the cells with link failures is identified, etc.
[0046] Secondly, a communication method is provided. This communication method can be executed by a terminal device, or by a chip or circuit configured in the terminal device; this application does not limit this.
[0047] The communication method may include: determining that at least one cell has a link failure; determining the format of a first indication message based on the situation of the link-failed cell, the first indication message indicating information about the link-failed cell; and sending the first indication message.
[0048] Optionally, the format of the first indication information is determined according to the situation of the link failure cell. It can be that the terminal device directly determines the format of the first indication information according to the situation of the link failure cell; or, it can also be that the terminal device indirectly determines the format of the first indication information according to the situation of the link failure cell.
[0049] Based on the above technical solution, an information format with variable length can be designed to indicate the cell information of link failure, and according to the situation of the link failure cell, the first indication information in a suitable format is selected, thereby reducing the waste of resources.
[0050] Combined with the second aspect, in some implementation manners of the second aspect, the first indication information corresponding to the first resource bearer is in a corresponding format.
[0051] In other words, the first indication information in the corresponding format is sent on the first resource.
[0052] Combined with the second aspect, in some implementation manners of the second aspect, the format of the first indication information is the first format or the second format, where the first format and the second format satisfy one or more of the following: the number of bits occupied by the first indication information in the first format is less than the number of bits occupied by the first indication information in the second format; the first indication information in the first format indicates the information of N1 link failure cells, and the first indication information in the second format indicates the information of N2 link failure cells, where N1 and N2 are integers greater than or equal to 1, and N1 < N2; or, the information payload included in the first indication information in the first format is less than the information payload included in the first indication information in the second format.
[0053] Combined with the second aspect, in some implementation manners of the second aspect, the format of the first indication information is the first format, and the first indication information in the first format includes one or more of the following information: a serving cell identification field, a first field, or a second field; where the serving cell identification field indicates the identification of the link failure cell through a status value, the first field indicates whether there is a corresponding second field for the link failure cell indicated by the serving cell identification field, and the second field indicates the reference signal information for restoring the link of the link failure cell indicated by the serving cell identification field.
[0054] In conjunction with the second aspect, in some implementations of the second aspect, the format of the first indication information is a second format, and the first indication information in the second format includes one or more of the following information: a serving cell identifier field, a first field, or a second field; wherein, the serving cell identifier field indicates the identifier of the link-failed cell through a bitmap, the first field indicates whether there is a corresponding second field for the link-failed cell indicated by the serving cell identifier field, and the second field indicates reference signal information for restoring the link of the link-failed cell indicated by the serving cell identifier field.
[0055] In conjunction with the second aspect, in some implementations of the second aspect, when the condition of the link-failed cell meets a preset condition, the first indication information indicates the identifier of the link-failed cell by means of a status value; and / or, when the condition of the link-failed cell does not meet the preset condition, the first indication information indicates the identifier of the link-failed cell by means of a bitmap.
[0056] In conjunction with the second aspect, in some implementations of the second aspect, the preset conditions include: the number of link-failed cells is less than or equal to a preset first threshold, or the payload of the information of the link-failed cells is less than or equal to a preset second threshold.
[0057] In conjunction with the second aspect, in some implementations of the second aspect, the situation of the link-failed cells includes: the number of link-failed cells and / or the payload of information about the link-failed cells.
[0058] Thirdly, a communication method is provided. This communication method can be executed by a network device, or by a chip or circuit configured in the network device; this application does not limit this.
[0059] The communication method may include: receiving first indication information, the first indication information indicating information about a cell with a failed link, the first indication information being determined based on the situation of the cell with a failed link; and restoring the link of the cell with a failed link based on the first indication information.
[0060] Optionally, the number of link-failed cells reported by the terminal device can be greater than or equal to the number of link-failed cells recovered by the network device. In other words, if the terminal device reports link failures in multiple cells, the network device can recover links in some or all of those cells.
[0061] In conjunction with the third aspect, in some implementations of the third aspect, before receiving the first indication information, the communication method further includes: receiving second indication information, the second indication information indicating a cell link failure; and determining a first resource carrying the first indication information based on a second resource carrying the second indication information or the second indication information.
[0062] Optionally, the second resource carrying the second indication information or the second indication information is determined based on the situation of the link-failed cell.
[0063] Optionally, determining the first resource carrying the first indication information based on the second resource or the second indication information carrying the second indication information may include: the network device allocating a resource of appropriate size to the terminal device to carry the first indication information based on the second resource or the second indication information carrying the second indication information.
[0064] Optionally, determining the first resource carrying the first instruction information based on the second resource carrying the second instruction information or the second instruction information itself may include: the network device activating the resource carrying the first instruction information based on the second resource carrying the second instruction information or the second instruction information. The resource carrying the first instruction information may be a resource activated by the response information of the second instruction information.
[0065] Optionally, determining the first resource carrying the first indication information based on the second resource carrying the second indication information or the second indication information itself may include: pre-configuring multiple resources for carrying the second indication information and multiple resources for carrying the first indication information, as well as the association relationship between the multiple resources for carrying the second indication information and the multiple resources for carrying the first indication information. The network device can determine the resource carrying the first indication information based on the second resource carrying the second indication information. In this case, the terminal device may not need to send the first indication information through the resource allocated by the response information of the second indication information, but can send it directly on the resource carrying the first indication information. Or, in this case, the network device may not need to send response information indicating the resource carrying the first indication information to the terminal device. Specific embodiments are described in detail below.
[0066] Based on the above technical solution, the terminal device can send second indication information on the corresponding second resource based on the case of a cell with a failed link, or generate second indication information so that the network device can allocate a resource of appropriate size to carry the first indication information to the terminal device according to the second resource; or, the network device can activate the resource carrying the first indication information for the terminal device; or, the network device can determine the corresponding first resource, i.e., determine the first resource carrying the first indication information, based on the association between the second resource and the first resource and the second resource carrying the second indication information.
[0067] In combination with the third aspect, in some implementations of the third aspect, the communication method further includes: sending third indication information, where the third indication information indicates a first resource carrying the first indication information.
[0068] Based on the above technical solution, the network device can dynamically allocate a first resource of a suitable size for carrying the first indication information to the terminal device.
[0069] In combination with the third aspect, in some implementations of the third aspect, the first resource carries the first indication information in a corresponding format.
[0070] In combination with the third aspect, in some implementations of the third aspect, the first indication information is determined based on the situation of the link failure cell, including: the format of the first indication information is determined based on the situation of the link failure cell; and / or, the resource carrying the first indication information is determined based on the situation of the link failure cell.
[0071] In combination with the third aspect, in some implementations of the third aspect, the format of the first indication information is the first format or the second format, where the first format and the second format satisfy one or more of the following: the number of bits occupied by the first indication information in the first format is less than the number of bits occupied by the first indication information in the second format; the first indication information in the first format indicates information of N1 link failure cells, and the first indication information in the second format indicates information of N2 link failure cells, where N1 and N2 are integers greater than or equal to 1, and N1 < N2; or, the information payload included in the first indication information in the first format is less than the information payload included in the first indication information in the second format.
[0072] In combination with the third aspect, in some implementations of the third aspect, the format of the first indication information is the first format, and the first indication information in the first format includes one or more of the following information: a serving cell identification field, a first field, or a second field; where the serving cell identification field indicates the identification of the link failure cell through a status value, the first field indicates whether there is a corresponding second field for the link failure cell indicated by the serving cell identification field, and the second field indicates reference signal information for restoring the link of the link failure cell indicated by the serving cell identification field.
[0073] In conjunction with the third aspect, in some implementations of the third aspect, the format of the first indication information is a second format, and the first indication information in the second format includes one or more of the following information: a serving cell identifier field, a first field, or a second field; wherein, the serving cell identifier field indicates the identifier of the link-failed cell through a bitmap, the first field indicates whether there is a corresponding second field for the link-failed cell indicated by the serving cell identifier field, and the second field indicates reference signal information for restoring the link of the link-failed cell indicated by the serving cell identifier field.
[0074] In conjunction with the third aspect, in some implementations of the third aspect, when the condition of the link-failed cell meets a preset condition, the first indication information indicates the identifier of the link-failed cell by means of a status value; and / or, when the condition of the link-failed cell does not meet the preset condition, the first indication information indicates the identifier of the link-failed cell by means of a bitmap.
[0075] In conjunction with the third aspect, in some implementations of the third aspect, the preset conditions include: the number of link-failed cells is less than or equal to a preset first threshold, or the payload of the information of the link-failed cells is less than or equal to a preset second threshold.
[0076] In conjunction with the third aspect, in some implementations of the third aspect, the situation of the link-failed cells includes: the number of link-failed cells and / or the payload of information about the link-failed cells.
[0077] Fourthly, a communication device is provided, which is used to perform the communication method provided in the first or second aspect. Specifically, the communication device may include a module for performing the communication method provided in the first or second aspect.
[0078] Fifthly, a communication device is provided, which is used to perform the communication method provided in the third aspect. Specifically, the communication device may include a module for performing the communication method provided in the third aspect.
[0079] A sixth aspect provides a communication device including a processor. The processor is coupled to a memory and can be used to execute instructions in the memory to implement the communication method described in the first or second aspect above, or in any possible implementation of the first or second aspect. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, to which the processor is coupled, the communication interface being used for inputting and / or outputting information. The information includes at least one of instructions and data.
[0080] In one implementation, the communication device is a terminal device. When the communication device is a terminal device, the communication interface can be a transceiver or an input / output interface.
[0081] In another implementation, the communication device is a chip or a chip system. When the communication device is a chip or a chip system, the communication interface can be an input / output interface, which may be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip or chip system. The processor can also be a processing circuit or logic circuit.
[0082] In another implementation, the communication device is a chip or chip system configured in a terminal device.
[0083] Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.
[0084] A seventh aspect provides a communication device including a processor. The processor is coupled to a memory and can be used to execute instructions in the memory to implement the communication method described in the third aspect and any possible implementation thereof. Optionally, the communication device further includes a memory. Optionally, the communication device further includes a communication interface, to which the processor is coupled, the communication interface being used for inputting and / or outputting information. The information includes at least one of instructions and data.
[0085] In one implementation, the communication device is a network device. When the communication device is a network device, the communication interface can be a transceiver or an input / output interface.
[0086] In another implementation, the communication device is a chip or a chip system. When the communication device is a chip or a chip system, the communication interface can be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip or chip system. The processor can also be a processing circuit or a logic circuit.
[0087] In another implementation, the communication device is a chip or chip system configured in a network device.
[0088] Optionally, the transceiver can be a transceiver circuit. Optionally, the input / output interface can be an input / output circuit.
[0089] Eighthly, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a communication device, causes the communication device to implement the first aspect or the second aspect, and the communication method in any possible implementation of the first aspect or the second aspect.
[0090] Ninth aspect, a computer-readable storage medium is provided having a computer program stored thereon, which, when executed by a communication device, causes the communication device to implement the communication method of the third aspect and any possible implementation thereof.
[0091] In a tenth aspect, a computer program product comprising instructions is provided, which, when executed by a computer, cause a communication device to implement the communication method provided in the first or second aspect.
[0092] Eleventhly, a computer program product containing instructions is provided, which, when executed by a computer, cause a communication device to implement the communication method provided in the third aspect.
[0093] In a twelfth aspect, a communication system is provided, including the aforementioned network equipment and terminal equipment.
[0094] Based on the embodiments of this application, the first indication information sent by the terminal device, i.e., the first indication information indicating information about a cell with a failed link, can be generated based on the situation of the cell with the failed link. For example, the format of the first indication information to be sent can be determined based on the situation of the cell with the failed link. That is, by designing a variable-length information format to indicate the cell information of the cell with the failed link, the terminal device can adaptively adjust the size or format of the first indication information it sends, effectively reducing the reporting of redundant information and reducing reporting overhead. Furthermore, determining the resources to carry the first indication information based on the situation of the cell with the failed link allows for the rational allocation of resources to carry the first indication information, reducing resource waste and improving resource utilization. Attached Figure Description
[0095] Figures 1 and 2 are schematic diagrams of a communication system applicable to embodiments of this application;
[0096] Figure 3 shows a schematic diagram of the beam training process;
[0097] Figure 4 shows a schematic diagram of a link failure recovery process;
[0098] Figure 5 is a schematic interaction diagram of a communication method provided according to an embodiment of this application;
[0099] Figures 6 to 14 illustrate schematic diagrams of the format of the first instruction information applicable to embodiments of this application;
[0100] Figure 15 illustrates a schematic diagram of the format of the second resource and the first instruction information applicable to embodiments of this application;
[0101] Figure 16 is another schematic interaction diagram of the communication method provided according to an embodiment of this application;
[0102] Figure 17 is a schematic block diagram of a communication device provided in an embodiment of this application;
[0103] Figure 18 is another schematic block diagram of the communication device provided in the embodiments of this application;
[0104] Figure 19 is a schematic block diagram of a terminal device provided in an embodiment of this application;
[0105] Figure 20 is a schematic block diagram of a network device provided in an embodiment of this application. Detailed Implementation
[0106] The technical solutions in this application will now be described with reference to the accompanying drawings.
[0107] The technical solutions of this application can be applied to various communication systems, such as: Long Term Evolution (LTE) systems, LTE Frequency Division Duplex (FDD) systems, LTE Time Division Duplex (TDD) systems, Universal Mobile Telecommunication System (UMTS), 5th Generation (5G) mobile communication systems, or New Radio (NR), etc. Among them, 5G mobile communication systems can include non-standalone (NSA) and / or standalone (SA) networks.
[0108] The technical solutions provided in this application can also be applied to future communication systems, such as sixth-generation mobile communication systems. Communication systems can also be PLMN networks, device-to-device (D2D) networks, machine-to-machine (M2M) networks, Internet of Things (IoT) networks, or other networks. IoT networks, for example, can include vehicle-to-everything (V2X) networks. The communication methods in V2X systems are collectively referred to as V2X (where X represents anything), and for example, V2X communication includes: vehicle-to-vehicle (V2V) communication, vehicle-to-infrastructure (V2I) communication, vehicle-to-pedestrian (V2P) communication, or vehicle-to-network (V2N) communication, etc.
[0109] The terminal equipment in this application embodiment can also be referred to as: user equipment (UE), mobile station (MS), mobile terminal (MT), access terminal, user unit, user station, mobile station, mobile station, remote station, remote terminal, mobile device, user terminal, terminal, wireless communication equipment, user agent, or user device, etc.
[0110] Terminal devices can be devices that provide voice / data connectivity to users, such as handheld devices with wireless connectivity, in-vehicle devices, etc. Currently, examples of terminals include: mobile phones, tablets, laptops, PDAs, mobile internet devices (MIDs), wearable devices, virtual reality (VR) devices, augmented reality (AR) devices, wireless terminals in industrial control, wireless terminals in self-driving vehicles, wireless terminals in remote medical surgery, wireless terminals in smart grids, wireless terminals in transportation safety, wireless terminals in smart cities, wireless terminals in smart homes, cellular phones, cordless phones, session initiation protocol (SIP) phones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless communication capabilities, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in 5G networks, or future public land mobile communication networks. Terminal devices in a network (PLMN), etc., are not limited to this in the embodiments of this application.
[0111] By way of example and not limitation, in this embodiment, the terminal device can also be a wearable device. Wearable devices, also known as wearable smart devices, are a general term for devices that utilize wearable technology to intelligently design and develop everyday wearables, such as glasses, gloves, watches, clothing, and shoes. Wearable devices are portable devices that are worn directly on the body or integrated into the user's clothing or accessories. Wearable devices are not merely hardware devices, but also achieve powerful functions through software support, data interaction, and cloud interaction. Broadly speaking, wearable smart devices include those that are feature-rich, large in size, and can achieve complete or partial functions without relying on a smartphone, such as smartwatches or smart glasses, as well as those that focus on a specific type of application function and require the use of other devices such as smartphones, such as various smart bracelets and smart jewelry for vital sign monitoring.
[0112] Furthermore, in this embodiment, the terminal device can also be a terminal device in an IoT system. IoT is an important component of future information technology development, and its main technical feature is connecting objects to networks through communication technology, thereby realizing an intelligent network of human-machine interconnection and machine-to-machine interconnection. In this embodiment, IoT technology can achieve massive connectivity, deep coverage, and low terminal power consumption through technologies such as narrowband (NB) technology.
[0113] In addition, in this embodiment, the terminal device may also include sensors such as smart printers, train detectors, and gas stations. Its main functions include collecting data (for some terminal devices), receiving control information and downlink data from network devices, and sending electromagnetic waves to transmit uplink data to network devices.
[0114] Furthermore, the network device in this application embodiment can be a device used to communicate with terminal devices. The network device can be a base station (BTS) in a Global System for Mobile Communications (GSM) system or Code Division Multiple Access (CDMA), a base station (NodeB, NB) in a Wideband Code Division Multiple Access (WCDMA) system, an evolved base station (eNB or eNodeB) in an LTE system, a radio controller in a cloud radio access network (CRAN) scenario, or a relay station, access point, vehicle-mounted device, wearable device, or a network device in a future 5G network or a network device in a future evolved PLMN network, etc. The embodiments of this application are not limited to these.
[0115] The network device in this application embodiment can be a device in a wireless network, such as a radio access network (RAN) node that connects a terminal to the wireless network. Examples of RAN nodes include: base stations, next-generation base stations (gNBs), transmission reception points (TRPs), evolved Node Bs (eNBs), home base stations, baseband units (BBUs), or access points (APs) in a WiFi system.
[0116] In a network architecture, network devices may include centralized unit (CU) nodes, distributed unit (DU) nodes, RAN devices including CU nodes and DU nodes, or RAN devices including control plane CU nodes (CU-CP nodes), user plane CU nodes (CU-UP nodes), and DU nodes.
[0117] In this embodiment, the terminal device or network device includes a hardware layer, an operating system layer running on top of the hardware layer, and an application layer running on top of the operating system layer. The hardware layer includes hardware such as a central processing unit (CPU), a memory management unit (MMU), and memory (also called main memory). The operating system can be any one or more computer operating systems that implement business processing through processes, such as Linux, Unix, Android, iOS, or Windows. The application layer includes applications such as browsers, address books, word processing software, and instant messaging software. Furthermore, this embodiment does not specifically limit the specific structure of the execution entity of the method provided in this embodiment, as long as it can communicate according to the method provided in this embodiment by running a program that records the code of the method provided in this embodiment. For example, the execution entity of the method provided in this embodiment can be a terminal device or a network device, or a functional module in the terminal device or network device that can call and execute a program.
[0118] Furthermore, various aspects or features of this application can be implemented as methods, apparatus, or articles of manufacture using standard programming and / or engineering techniques. The term "article of manufacture" as used herein encompasses a computer program accessible from any computer-readable device, carrier, or medium. For example, computer-readable media may include, but are not limited to: magnetic storage devices (e.g., hard disks, floppy disks, or magnetic tapes), optical discs (e.g., compact discs (CDs), digital versatile discs (DVDs), etc.), smart cards, and flash memory devices (e.g., erasable programmable read-only memory (EPROMs), cards, sticks, or key drives, etc.). Additionally, the various storage media described herein may represent one or more devices and / or other machine-readable media for storing information. The term "machine-readable medium" may include, but is not limited to, wireless channels and various other media capable of storing, containing, and / or carrying instructions and / or data.
[0119] To facilitate understanding of the embodiments of this application, the communication system applicable to the embodiments of this application will be described in detail first with reference to FIG1 and FIG2.
[0120] Figure 1 shows a schematic diagram of a communication system 100 applicable to an embodiment of this application. The communication system 100 can be in a single-carrier scenario or a carrier aggregation (CA) scenario. Carrier aggregation can refer to aggregating multiple consecutive or non-consecutive unit carriers into a larger bandwidth.
[0121] As shown in the figure, the communication system 100 may include at least one network device, such as network device 110 shown in Figure 1; the communication system 100 may also include at least one terminal device, such as terminal device 120 shown in Figure 1. Network device 110 and terminal device 120 can communicate via a wireless link.
[0122] When terminal device 120 detects a link failure between network device 110 and terminal device 120, terminal device 120 may send a beam failure recovery request (BFRQ) to network device 110. Optionally, after receiving the BFRQ, network device 110 may send a beam failure recovery response (BFRR) or reconfigure the link to terminal device 120.
[0123] Optionally, network device 110 may include one or more cells. For example, it may include a first cell and a second cell. If the link between terminal device 120 and network device 110 in the second cell fails, the first cell can assist the second cell in link recovery. For example, terminal device 120 can send the BFRQ information to network device 110 on uplink resources belonging to the first cell, and terminal device 120 can receive the BFRR information sent by network device 110 on downlink resources belonging to the second cell.
[0124] When the communication system 100 is transmitting upstream, the terminal device 120 is the transmitter and the network device 110 is the receiver. When the communication system 100 is transmitting downstream, the network device 110 is the transmitter and the terminal device 120 is the receiver.
[0125] Figure 2 shows another schematic diagram of a communication system 200 applicable to embodiments of this application. The communication system 200 can be in a dual connectivity (DC), multi-link, or coordinated multipoint transmission / reception (CoMP) scenario.
[0126] As shown in the figure, the communication system 200 may include multiple network devices, such as network devices 210 and 220 shown in Figure 2; the communication system 200 may also include at least one terminal device, such as terminal device 230 shown in Figure 2. Terminal device 230 can establish a wireless link with network devices 210 and 220 through multi-connection technology. Network device 210 may be a primary base station, and network device 220 may be a secondary base station. In this case, network device 210 is the network device used when terminal device 230 initially accesses the system, responsible for radio resource control (RRC) communication with terminal device 230. Network device 220 may be added during RRC reconfiguration to provide additional radio resources. Terminal device 230 configured with carrier aggregation is connected to network devices 210 and 220. The link between network device 210 and terminal device 230 can be referred to as the first link, and the link between network device 220 and terminal device 230 can be referred to as the second link.
[0127] Furthermore, as shown in Figure 2, one of the two network devices, such as network device 210, can be responsible for interacting with the terminal device via radio resource control messages and interacting with the core network control plane entities. This network device 210 can be called the master node (MN), for example, it could be a master eNB (MeNB) or a master gNB (MgNB), without limitation. The other network device, such as network device 220, can be called the secondary node (SN), for example, it could be a secondary eNB (SeNB) or a secondary gNB (SgNB), without limitation. Multiple serving cells within the master node can form a master cell group (MCG), including one primary cell (PCell) and one or more optional secondary cells (SCells). Multiple secondary cells in a secondary node can form a secondary cell group (SCG), which includes one primary secondary cell (PSCell) and one or more optional SCells. The serving cell is the cell that the network configures for uplink and downlink transmission to terminal devices.
[0128] For ease of understanding, the terminology mentioned above will be briefly described.
[0129] Primary serving cell (PCell): Also known as the primary serving cell. A PCell is the cell where terminal equipment camps under carrier aggregation. Generally, only the PCell has a physical uplink control channel (PUCCH).
[0130] Primary and secondary cells: also known as auxiliary primary cells. A PSCell is a special secondary cell on a secondary eNodeB (SeNB) that is configured by the primary base station (master eNodeB, MeNB) to the terminal equipment under dual-linkage via RRC connection signaling.
[0131] SCell: Refers to a cell configured for terminal equipment under carrier aggregation via RRC connection signaling. It operates on a secondary carrier (SCC) and can provide more radio resources for terminal equipment under carrier aggregation. SCell can have downlink or uplink and downlink simultaneously.
[0132] Special Cell (SpCell): In dual-link scenarios, SpCell refers to the PCell of the master cell group (MCG) or the PSCell of the secondary cell group (SCG). In other scenarios, such as carrier aggregation, SpCell refers to the PCell.
[0133] MCG: Refers to the main cell group, which is the group of cells in the main base station that provide services to terminal equipment. In dual-link mode, MCG includes a group of serving cells associated with the MeNB, including PCell and one or more SCells.
[0134] SCG: The secondary cell group refers to the group of cells in a secondary base station that provide services to terminal equipment. In dual-link mode, SCG includes PSCell and one or more optional SCells.
[0135] MeNB: The base station to which the terminal device in the dual-linkage cell belongs.
[0136] SeNB: MeNB configures one or more base stations for terminal devices under dual-linkage via RRC connection signaling.
[0137] Similarly, a terminal device can simultaneously communicate with and send and receive data with a larger number of network devices. Among these network devices, one network device can be responsible for interacting with the terminal device via radio resource control messages and interacting with the core network control plane entity. This network device can be called MN, and the remaining network devices can be called SN.
[0138] Of course, network device 220 can also be the main base station or main node, and network device 210 can be the secondary base station or secondary node; this application does not limit this. Furthermore, the figure only illustrates the wireless connection between two network devices and the terminal device for ease of understanding, but this should not constitute any limitation on the scenarios to which this application applies. The terminal device can also establish wireless links with more network devices, or it can establish wireless links with fewer network devices.
[0139] When both network devices 210 and 220 are configured to provide uplink resources for transmitting BFRQ to terminal device 230, if the first link or the second link fails, terminal device 230 can send a BFRQ to network device 210 or network device 220 on the uplink resources used for transmitting BFRQ. After receiving the BFRQ, network device 210 or network device 220 sends a BFRR to terminal device 230.
[0140] Specifically, if the network device 220 is not configured with uplink resources for transmitting BFRQ, then when the second link fails, the terminal device 230 can restore the second link through the network device 210.
[0141] Each communication device, such as network device 110 or terminal device 120 in Figure 1, or network device 210, network device 220, or terminal device 230 in Figure 2, can be configured with multiple antennas. These multiple antennas may include at least one transmitting antenna for transmitting signals and at least one receiving antenna for receiving signals. Additionally, each communication device also includes a transmitter chain and a receiver chain, which, as will be understood by those skilled in the art, may include multiple components related to signal transmission and reception (e.g., processors, modulators, multiplexers, demodulators, demultiplexers, or antennas). Therefore, network devices and terminal devices can communicate via multi-antenna technology.
[0142] The communication systems described above are merely illustrative examples, and the communication systems applicable to this application are not limited thereto. For example, the number of network devices and terminal devices included in the communication system may be other numbers, or a single base station, multi-carrier aggregation scenario, dual-link scenario, or device-to-device (D2D) communication scenario may be adopted.
[0143] It should be understood that the technical solutions of the embodiments of this application can be applied to a carrier aggregation scenario where one cell assists another cell or multiple cells in restoring a link. Alternatively, the technical solutions of the embodiments of this application can be applied to a dual-link scenario where one cell within a cell group assists another cell or multiple cells in restoring a link. Alternatively, the technical solutions of the embodiments of this application can also be applied to a single-carrier, carrier aggregation, or dual-link scenario where a cell fails to restore its own link on the resources of that cell.
[0144] It should also be understood that the technical solutions in the embodiments of this application can be applied to situations where the primary cell (PCell) is high-frequency or low-frequency, and the secondary cell (SCell) is high-frequency or low-frequency. For example, when the PCell is low-frequency and the SCell is high-frequency. In one possible implementation, for an SCell without configured uplink resources, the uplink resources of the PCell can be used to assist the SCell in restoring the link. Generally, low-frequency and high-frequency are relative terms, but a specific frequency can also be used as the dividing line, such as 6GHz.
[0145] It should also be understood that the technical solutions of the embodiments of this application can also be applied to the coordinated multipoint transmission / reception (CoMP) scenario, where one TRP assists another TRP in restoring the link. CoMP can be one or more of the following scenarios: non-coherent joint transmission (NCJT), coherent joint transmission (CJT), or joint transmission (JT).
[0146] To facilitate understanding of the embodiments of this application, a few terms involved in this application will be briefly explained.
[0147] 1. Control resource set (CORESET)
[0148] The control resource set is a collection of resources used to transmit downlink control information. It can also be called a control resource region or a physical downlink control channel resource set.
[0149] Network devices can configure one or more control resource sets for terminal devices to transmit physical downlink control channels (PDCCH). The network device can transmit control channels to the terminal device on any control resource set corresponding to the terminal device. In addition, the network device also needs to notify the terminal device of other configurations associated with the control resource set, such as search space sets. The configuration information for each control resource set differs, for example, in terms of frequency bandwidth and time length.
[0150] Optionally, the set of control resources in this application can be any of the following: CORESET, control region, or set of enhanced-physical downlink control channels (ePDCCH) defined by the 5G mobile communication system.
[0151] The time-frequency position occupied by the PDCCH can be referred to as the downlink control region. In one possible scenario, the PDCCH is always located within the first m symbols of a subframe, where m can be 1, 2, 3, or 4. The E-PDCCH and R-PDCCH are not located within the first m symbols.
[0152] The downlink control area can be flexibly configured by RRC signaling through a control resource set (CORESET) and a search space set. The control resource set can configure information such as the frequency domain location of the PDCCH or control channel element (CCE), and the number of continuous symbols in the time domain. The search space set can configure information such as the detection period and offset of the PDCCH, and the start symbol within a time slot.
[0153] For example, if the search space set can be configured with a PDCCH period of 1 time slot and a time domain start symbol of symbol 0, then the terminal device can detect the PDCCH at the beginning of each time slot.
[0154] 2. Spatial related parameter information
[0155] Spatial correlation parameter information can include quasi-collocation (QCL) information and spatial relation information. Generally, QCL information is used to indicate the spatial correlation parameters (also known as spatial correlation characteristics) of downlink signals, while spatial relation information is used to indicate the spatial correlation parameters (also known as spatial correlation characteristics) of uplink signals.
[0156] Uplink signals include, but are not limited to: PUCCH, physical uplink shared channel (PUSCH), sounding reference signal (SRS), and demodulation reference signal (DMRS).
[0157] Downlink signals include, but are not limited to: PDCCH, physical downlink shared channel (PDSCH), tracking reference signal (TRS), channel state information reference signal (CSI-RS), cell specific reference signal (CS-RS), user equipment specific reference signal (US-RS), demodulation reference signal (DMRS), and synchronization signal / physical broadcast channel block (SS / PBCH block). The SS / PBCH block can be abbreviated as synchronization signal block (SSB). The SSB includes one or more of the following: primary synchronization signal (PSS), secondary synchronization signal (SSS), and PBCH. These signals are primarily used for cell search, cell synchronization, and carrying broadcast information.
[0158] Spatial relation information is used to help describe the beamforming information and transmission process on the transmitting side of the terminal equipment.
[0159] Spatial relation information is used to indicate the spatial transmission parameter relationship between two reference signals. The target reference signal is generally a downlink signal, such as DMRS or SRS. The referenced or source reference signal can generally be CSI-RS, SRS, or SSB, etc.
[0160] Quasi-co-location, also known as quasi-co-site or co-location, refers to the use of QCL information, also called QCL assumption information. QCL information is used to assist in describing the terminal equipment's reception of beamforming information and the reception process.
[0161] QCL information can be used to indicate the QCL relationship between two reference signals. The target reference signal is generally a downlink signal, such as DMRS or CSI-RS. The referenced or source reference signal can generally be CSI-RS, SSB, or TRS. TRS is also a type of CSI-RS. Taking PDCCH QCL information as an example, the configuration method for PDCCH QCL information is as follows:
[0162] Configure K candidate QCL information for PDCCH, such as configuring K candidate QCL information for PDCCH through RRC. The K candidate QCL information may include K TCI-states, where K is an integer greater than or equal to 1.
[0163] Indicates the QCL information of the PDCCH (e.g., via the Media Access Control (MAC) control element (CE) (MAC CE) indicating the QCL information of the PDCCH (when K is an integer greater than 1).
[0164] It can be specified that during the initial radio resource control (RRC) and media access control (MAC) - control element (CE) phases, the terminal device assumes that the DMRS of the PDCCH and PDSCH is QCL with the SSB determined during initial access.
[0165] The signals corresponding to antenna ports with QCL relationship can have the same or similar spatial characteristic parameters (or parameters). Alternatively, the spatial characteristic parameters (or parameters) of one antenna port can be used to determine the spatial characteristic parameters (or parameters) of another antenna port with QCL relationship with that antenna port. Alternatively, two antenna ports have the same or similar spatial characteristic parameters (or parameters). Alternatively, the difference between the spatial characteristic parameters (or parameters) of two antenna ports is less than a certain threshold.
[0166] It should be understood that the spatial characteristic parameters of two reference signals or channels that satisfy the QCL relationship are the same (or similar, or nearly similar), and thus the spatial characteristic parameters of the target reference signal can be inferred based on the source reference signal resource index.
[0167] It should also be understood that the spatial characteristic parameters of two reference signals or channels that satisfy spatial relationship information are the same (or similar, or nearly similar), so the spatial characteristic parameters of the target reference signal can be inferred based on the source reference signal resource index.
[0168] The spatial characteristic parameters may include one or more of the following parameters:
[0169] Angle of arrival (AoA), dominant angle of arrival (AoA), average angle of arrival, power angular spectrum (PAS) of the angle of arrival, angle of departure (AoD), dominant angle of departure, average angle of departure, power angular spectrum of the angle of departure, terminal equipment transmit beamforming, terminal equipment receive beamforming, spatial channel correlation, network equipment transmit beamforming, network equipment receive beamforming, average channel gain, average channel delay, delay spread, Doppler spread, Doppler shift, or spatial Rx parameters, etc.
[0170] The aforementioned angles can be: decomposition values of different dimensions, or combinations of decomposition values of different dimensions. Antenna ports can be antenna ports with different antenna port numbers. Antenna ports can also be: antenna ports with the same or different antenna port numbers that transmit or receive information at different times. Antenna ports can also be: antenna ports with the same or different antenna port numbers that transmit or receive information within different frequencies. Antenna ports can also be: antenna ports with the same or different antenna port numbers that transmit or receive information within different code domain resources.
[0171] These spatial characteristic parameters describe the spatial channel characteristics between the antenna ports of the source reference signal and the target reference signal, helping the terminal device to complete the receive-side beamforming or reception processing based on this QCL information. For example, the terminal device can receive the target reference signal based on the receive beam information of the source reference signal indicated by the QCL information. These spatial characteristic parameters also help the terminal device to complete the transmit-side beamforming or transmission processing based on this spatially related information. For example, the terminal device can transmit the target reference signal based on the transmit beam information of the source reference signal indicated by the spatially related information.
[0172] To reduce the overhead of network devices indicating QCL information to terminal devices, as an optional implementation, the network device can indicate that the demodulation reference signal of the PDCCH or PDSCH satisfies a QCL relationship with one or more of the multiple reference signal resources previously reported by the terminal device. For example, the reference signal can be a CSI-RS. Each reported CSI-RS resource index corresponds to a transmit / receive beam pair previously established based on measurements of that CSI-RS resource. It should be understood that the receive beam information of two reference signals or channels satisfying the QCL relationship is identical, and the terminal device can infer the receive beam information of the received PDCCH or PDSCH based on the reference signal resource index.
[0173] In existing protocols, QCL relationships can be categorized into the following four types based on different parameters:
[0174] Type A: Doppler shift, Doppler spread, average delay, delay spread;
[0175] Type B: Doppler frequency shift, Doppler spread;
[0176] Type C: Doppler shift, average time delay; and
[0177] Type D: Spatial Rx parameter.
[0178] Network devices can configure one or more types of QCLs for terminal devices at the same time, such as QCL type A+D, C+D, etc.
[0179] When the QCL relationship refers to type D, it can be considered a spatial QCL. When antenna ports satisfy a spatial QCL relationship, it can be a QCL relationship between ports of downlink signals, or between ports of uplink signals (as referred to above as a spatial relation). For example, for a QCL relationship between downlink and uplink signals, or between ports of uplink and downlink signals, it could mean that the two signals have the same AOA or AOD, indicating that they have the same receive or transmit beam. Furthermore, for a QCL relationship between downlink and uplink signals, or between ports of uplink and downlink signals, it could mean that the AOA and AOD of the two signals are corresponding, or that the AOD and AOA of the two signals are corresponding. That is, beam reciprocity can be used to determine the uplink transmit beam based on the downlink receive beam, or vice versa.
[0180] From the transmitting end's perspective, if two antenna ports are spatially QCL (Quadrature Coordinated Linearity), it means that the corresponding beam directions of these two antenna ports are spatially aligned. From the receiving end's perspective, if two antenna ports are spatially QCL, it means that the receiving end can receive the signals transmitted by these two antenna ports in the same beam direction.
[0181] Signals transmitted on ports with spatial QCL relationships can also have corresponding beams. The corresponding beams can include one or more of the following: the same receiving beam, the same transmitting beam, the transmitting beam corresponding to the receiving beam (e.g., corresponding to a reciprocal scenario), and the receiving beam corresponding to the transmitting beam (e.g., corresponding to a reciprocal scenario).
[0182] Signals transmitted on ports with spatial QCL relationships can also be understood as signals received or transmitted using the same spatial filter. The spatial filter can be one or more of the following: precoding, antenna port weighting, antenna port phase deflection, or antenna port amplitude gain.
[0183] Signals transmitted on ports with spatial QCL relationships can also be understood as having corresponding beam pair links (BPLs). A corresponding BPL includes one or more of the following: the same downlink BPL, the same uplink BPL, an uplink BPL corresponding to the downlink BPL, or a downlink BPL corresponding to the uplink BPL.
[0184] Therefore, spatial reception parameters (i.e., QCL of type D) can be understood as parameters used to indicate the direction information of the received beam.
[0185] In the examples of this application, the correspondence of certain parameters can also be applied to scenarios described by QCL.
[0186] It should be understood that the scenarios applicable to the QCL assumption in this application can also be two reference signals, or the relationship between transmission objects.
[0187] 3. Transmission Configuration Indicator (TCI) State
[0188] TCI-state can be used to indicate the QCL information of a signal or channel. The channel can be, for example, PDCCH, CORESET, or PDSCH. The signal can be, for example, CSI-RS, DMRS, or TRS. TCI information can indicate that the reference signal included in the TCI satisfies a QCL relationship with the channel, primarily indicating that when receiving the channel, its spatial characteristic parameters are the same, similar, or nearly identical to the spatial characteristic parameters of the reference signal included in the TCI. TCI information can also indicate that the reference signal included in the TCI satisfies a QCL relationship with the signal, primarily indicating that when receiving the signal, its spatial characteristic parameters are the same, similar, or nearly identical to the spatial characteristic parameters of the reference signal included in the TCI.
[0189] A TCI-state can configure one or more reference signals and their associated QCL types. In other words, the configuration information of a TCI-state can include the identifiers of one or two reference signal resources and their associated QCL types. QCL types are further divided into four categories: Type A, Type B, Type C, and Type D, which represent different combinations or selections of {Doppler shift, Doppler spread, average delay, delay spread, spatial Rx parameter}. A TCI-state contains QCL information, or it can be used to indicate QCL information.
[0190] TCI-state is configured by the network device for each terminal device. The following is a format of TCI-state.
[0191]
[0192] Furthermore, TCI-state can be configured globally. In TCI-state configurations for different cells and different bandwidth parts (BWPs), if the TCI-state index is the same, then the corresponding TCI-state configuration will also be the same.
[0193] 4. Component carrier (CC)
[0194] A unit carrier can also be called a component carrier, constituent carrier, or member carrier, etc. Each carrier in multi-carrier aggregation can be called a "CC". Terminal equipment can receive data on multiple CCs. Each carrier consists of one or more physical resource blocks (PRBs), and each carrier can have its own corresponding PDCCH, scheduling the PDSCH of its own CC; or, some carriers do not have PDCCH, in which case cross-carrier scheduling can be performed on these carriers.
[0195] Cross-carrier scheduling: A network device transmits a PDCCH on one CC to schedule data transmission on another CC; that is, it transmits a PDSCH or a PUSCH on the other CC. More specifically, a network device can transmit a PDCCH on a bandwidth portion (BWP) of one CC to schedule the transmission of a PDSCH or PUSCH on the BWP of another CC. In other words, the control channel is transmitted on one CC, while the corresponding data channel is transmitted on the other CC.
[0196] 5. Beam
[0197] A beam is a communication resource. A beam can be wide, narrow, or other types. The technology used to form a beam can be beamforming or other techniques. Beamforming technologies can specifically include digital beamforming, analog beamforming, and hybrid digital / analog beamforming. Different beams can be considered different resources. The same information or different information can be transmitted through different beams.
[0198] Alternatively, multiple beams with the same or similar communication characteristics can be considered as a single beam. A beam corresponds to one or more antenna ports for transmitting data channels, control channels, and detection signals, etc. The one or more antenna ports corresponding to a beam can also be considered as a set of antenna ports.
[0199] The beam used to transmit signals can be called the transmission beam (Tx beam), or the spatial domain transmission filter or spatial transmission parameter; the beam used to receive signals can be called the reception beam (Rx beam), or the spatial domain receive filter or spatial RX parameter.
[0200] The transmitting beam can refer to the distribution of signal strength in different directions in space after a signal is transmitted through an antenna, while the receiving beam can refer to the distribution of signal strength in different directions in space of a wireless signal received from an antenna.
[0201] Beams can be categorized into: transmit and receive beams of network devices, and transmit and receive beams of terminal devices. The transmit beam of a network device describes the beamforming information transmitted by the network device, and the receive beam describes the beamforming information received by the network device. Similarly, the transmit beam of a terminal device describes the beamforming information transmitted by the terminal device, and the receive beam describes the beamforming information received by the terminal device. In other words, beams can be used to describe beamforming information.
[0202] Beams are generally associated with resources, and beams can correspond to: time resources, spatial resources, and frequency domain resources.
[0203] Alternatively, the beam may also correspond to a reference signal resource (e.g., a beamforming reference signal resource) or beamforming information.
[0204] Optionally, the beam can also correspond to information associated with a reference signal resource of the network device. The reference signal can be, for example, CSI-RS, SSB, DMRS, phase tracking reference signal (PTRS), or TRS. The information associated with the reference signal resource can be a reference signal resource identifier or QCL information (such as the QCL of type D). The reference signal resource identifier corresponds to a transmit / receive beam pair previously established based on measurements of that reference signal resource; through this reference signal resource index, the terminal device can infer the beam information.
[0205] Alternatively, the beam can also correspond to a spatial filter or spatial domain filter, or a spatial domain transmission filter.
[0206] In this context, the receiving beam can be equivalent to a spatial transmission filter, a spatial domain transmission filter, a spatial domain receiving filter, and a spatial receiving filter; the transmitting beam can be equivalent to a spatial filter, a spatial domain transmission filter, a spatial domain transmitting filter, and a spatial transmitting filter. Information about spatially relevant parameters can be equivalent to a spatial filter (spatial domain transmission / receive filter). Optionally, a spatial filter generally includes a spatial transmitting filter and / or a spatial receiving filter. This spatial filter can also be called a spatial transmitting filter, a spatial receiving filter, a spatial transmission filter, etc. Specifically, the receiving beam on the terminal device side and the transmitting beam on the network device side can be downlink spatial filters, and the transmitting beam on the terminal device side and the receiving beam on the network device side can be uplink spatial filters.
[0207] 6. Antenna port
[0208] An antenna port, also simply called a port, is a transmitting antenna that is recognized by the receiving device, or a spatially distinguishable transmitting antenna. Each virtual antenna can be configured with one antenna port, and each virtual antenna can be a weighted combination of multiple physical antennas. Each antenna port can correspond to a reference signal port.
[0209] 7. Bandwidth Part (BWP)
[0210] Since the transmit or receive capabilities of different terminal devices within the same cell in NR may differ, the system can allocate corresponding bandwidth to each terminal device. This bandwidth allocated to the terminal device is called the BWP (Bandwidth-on-Package). The terminal device transmits on its own BWP. A BWP can be a group of contiguous frequency domain resources on a carrier, such as a physical resource block (PRB). The frequency domain resources occupied by different BWPs may partially overlap or not overlap. The bandwidth of the frequency domain resources occupied by different BWPs may be the same or different; this application does not limit this. The smallest granularity of a BWP in the frequency domain can be one PRB.
[0211] In a single-carrier scenario, a terminal device can have only one active BWP at any given time. The terminal device only receives or transmits data / reference signals on the active BWP.
[0212] In this application, when applicable to BWP scenarios, a specific BWP can also be a set of bandwidths on a specific frequency, or a set of multiple resource blocks (RBs), etc., without limitation.
[0213] 8. Reference signals configured for detecting and recovering from link failures.
[0214] Communication systems typically use two types of reference signals: one type is used to estimate the channel, enabling coherent demodulation of received signals containing control information or data; the other type is used to measure channel state or channel quality, thereby facilitating the scheduling of terminal devices. Terminal devices obtain Channel State Information (CSI) based on channel quality measurements of the CSI-RS. CSI includes one or more of the following: Rank Indicator (RI), Precoding Matrix Indicator (PMI), or Channel Quality Indicator (CQI). This information can be transmitted by the terminal device to network devices via the Physical Uplink Control Channel or the Physical Uplink Shared Channel.
[0215] In order to detect beam failure, network devices can provide terminal devices with reference signal resources for beam failure detection (RS) (also known as reference signal resources for link failure detection).
[0216] For example, network devices can indicate the configured set of link failure detection reference signals through one or more of the following signaling methods: RRC, Media Access Control Element (MAC-CE), or DCI signaling. Alternatively, beam failure detection reference signals can also be indicated implicitly, such as using the reference signal associated with the TCI of the PDCCH as the beam failure detection reference signal. This reference signal is one that satisfies the QCL relationship with the DMRS of the PDCCH and is a periodically transmitted reference signal.
[0217] Optionally, when the network device displays a set of reference signal resources configured for beam failure detection, the terminal device can detect beam failure based on the set of reference signal resources for beam failure detection; when the network device does not display a set of reference signal resources configured for beam failure detection, the terminal device can detect beam failure according to the reference signals indicated in the above implicit manner.
[0218] To recover from beam failure, network devices can also provide terminal devices with a set of candidate reference signal resources (candidate beam RS list, candidate beam RS identification resource, beam failure candidate beam resource, candidate beam identification RS, or candidate beam list) for restoring the link between the terminal device and the network device (also referred to as candidate reference signal resource set or link failure recovery reference signal resource set).
[0219] After beam failure, the terminal device can select reference signal resources from the candidate reference signal resource set whose channel quality information (such as reference signal receiving power (RSRP), channel quality indicator (CQI), block error ratio (BLER), signal-to-interference plus noise ratio (SINR), signal noise ratio (SNR), etc.) is higher than a predetermined threshold, for use in restoring the communication link. Alternatively, the candidate beam identification RS can be understood as the set of reference signals used by the terminal device to initiate link reconfiguration after determining that the network device's transmit beam has failed.
[0220] It should be understood that, in specific implementations, the two sets of reference signal resources used for beam failure detection and reference signal resource sets used for restoring the link between the terminal device and the network device may have other names, and this application does not specifically limit them.
[0221] The above is merely an illustrative example. The embodiments of this application do not limit the reference signal resources used for beam failure detection, the set of candidate reference signal resources used to restore the link between the terminal device and the network device, or how to detect and how to restore the link.
[0222] In the embodiments of this application, beam failure can also be referred to as communication failure, beam malfunction, link failure, link malfunction, communication failure, communication link failure, communication link malfunction, etc. In the embodiments of this application, these concepts have the same meaning.
[0223] In this application embodiment, beam failure recovery can also be referred to as restoring communication between network devices and terminal devices, communication failure recovery, beam fault recovery, beam recovery, link failure recovery, link fault recovery, link recovery, communication failure recovery, communication fault recovery, communication link failure recovery, communication link fault recovery, communication recovery, link reconfiguration, etc.
[0224] In this embodiment of the application, the beam failure recovery request (BFRQ) can also be referred to as communication failure recovery request information, beam failure recovery request information, beam recovery request information, link failure recovery request information, link failure recovery request information, link recovery request information, communication failure recovery request information, communication recovery request information, communication link failure recovery request information, communication link failure recovery request information, communication link recovery request information, link reconfiguration request information, reconfiguration request information, etc. Optionally, a beam failure recovery request can refer to sending a signal on the resource used to carry the communication failure recovery request.
[0225] It should be understood that "information" in the embodiments of this application can be replaced with "message". In the embodiments of this application, these concepts have the same meaning.
[0226] In this embodiment of the application, beam failure recovery response (BFRR) information can also be referred to as communication failure recovery response information, beam failure recovery response information, beam failure response information, beam failure response information, beam recovery response, link failure recovery response information, link failure recovery response information, link failure response information, link failure response information, link recovery response information, communication failure response information, communication failure response information, communication recovery response information, communication link failure recovery response information, communication link failure recovery response information, communication link failure response information, communication link failure response information, communication link failure response information, communication link response information, link reconfiguration response information, reconfiguration response information, etc. It should be understood that in this embodiment of the application, beam failure recovery response information can be simply referred to as response information.
[0227] In this embodiment of the application, beam failure recovery response information may refer to downlink control information (DCI) scrambled by cell radio network temporary identifier (C-RNTI) and received on the control resource set and / or search space set used for sending communication failure recovery response. The beam failure recovery response information may also be DCI scrambled by other information (such as DCI scrambled by BFR-RNTI), data scheduled by the above-mentioned DCI, and ACK of the data scheduled by the above-mentioned DCI. The beam failure recovery response information can also be one of the following: a DCI scrambled with C-RNTI, a DCI scrambled with Modulation and Coding Scheme (MCS) cell-specific radio network temporary identifier (MCS-C-RNTI), a downlink control information DCI within the dedicated search space, a DCI scrambled with a dedicated radio network temporary identifier (RNTI), a DCI scrambled with a random access radio network temporary identifier (RA-RNTI), a DCI containing a preset state value, a DCI containing a transmission configuration indication (TCI) information, a quasi-co-location QCL indication information for the cell where the link failure occurred, or a DCI in a preset format, wherein the preset format DCI indicates newly transmitted data. This application embodiment does not limit this.
[0228] It should be understood that the names of beam failure, beam failure recovery, beam failure recovery request information and beam failure recovery response information in the embodiments of this application may also be called other names, and this application does not make specific limitations on them.
[0229] It should be understood that in the embodiments of this application, link recovery failure can be understood as the terminal device no longer sending link failure recovery request information, or it can be understood as stopping the link failure recovery clock timing, or stopping the link failure recovery counter counting, etc.
[0230] 9. Beam Training Process
[0231] The beam training process can include the following steps.
[0232] The optimal selection of N beam pair links (BPLs), where N is an integer greater than or equal to 1. A BPL may include a transmit beam of a network device and a receive beam of a terminal device, or a BPL may include a transmit beam of a terminal device and a receive beam of a network device. The terminal device selects the transmit beam of the network device and / or the receive beam of the terminal device based on the beam scanning of the network device, and the network device selects the transmit beam of the terminal device and / or the receive beam of the network device based on the beam scanning of the terminal device. This is illustrated in Figure 3(1) as downlink joint TRP and UE beam refinement, or in Figure 3(2) as uplink joint TRP and UE beam refinement.
[0233] Updating the transmit beam. The transmit beam can be the transmit beam of the network device or the transmit beam of the terminal device. In one possible case, when the transmit beam is the transmit beam of the network device, as shown in downlink TRP beam refinement (DL TRP beam refinement) in Figure 3 (5), the network device sends reference signals to the terminal device through different transmit beams, and the terminal device receives the reference signals sent by the network device through different transmit beams through the same receive beam, and determines the optimal transmit beam of the network device based on the received signals. Then the terminal device feeds back the optimal transmit beam of the network device to the network device so that the network device can update the transmit beam. In another possible case, when the transmit beam is the transmit beam of the terminal device, as shown in uplink terminal device beam refinement (UL UE beam refinement) in Figure 3 (4), the terminal device sends reference signals to the network device through different transmit beams, and the network device receives the reference signals sent by the terminal device through different transmit beams through the same receive beam, and determines the optimal transmit beam of the terminal device based on the received signals. Then, the optimal transmit beam from the terminal device is fed back to the terminal device so that the terminal device can update the transmit beam. The process of sending reference signals through different transmit beams is called beam scanning, and the process of determining the optimal transmit beam based on the received signal is called beam matching.
[0234] Update of the receive beam. The receive beam can be the receive beam of the network device or the receive beam of the terminal device. In one possible case, when the receive beam is the receive beam of the network device, as shown in uplink TRP beam refinement (UL TRP beam refinement) in Figure 3 (6), the terminal device sends a reference signal to the network device through the same transmit beam, and the network device uses different receive beams to receive the reference signal sent by the terminal device. Then the network device determines the optimal receive beam of the network device based on the received signal to update the receive beam of the network device. In another possible case, when the receive beam is the receive beam of the terminal device, as shown in downlink UE beam refinement (DL UE beam refinement) in Figure 3 (3), the network device sends a reference signal to the terminal device through the same transmit beam, and the terminal device uses different receive beams to receive the reference signal sent by the network device. Then the terminal device determines the optimal receive beam of the terminal device based on the received signal to update the receive beam of the terminal device.
[0235] During downlink signal transmission, both the transmit beam of the network device and the receive beam of the terminal device may change dynamically. The optimal receive beam determined by the terminal device based on the received signal may include multiple beams. To enable the terminal device to determine its own receive beam, it can feed back information from these multiple receive beams to the network device. The network device can indicate the terminal device's receive beam to the terminal device by sending beam indication information. When the terminal device uses analog domain beamforming, it can accurately determine its receive beam based on the beam indication information sent by the network device, thereby saving beam scanning time and achieving power saving.
[0236] Through the beamforming process, the network device obtains N BPLs that provide optimal communication with the terminal device. These BPLs include...<Bx,B’x> as well as<By,B’y> Where Bx represents the transmit beam of the network device, B'x represents the receive beam of the terminal device, By represents the transmit beam of the terminal device, and By'y represents the receive beam of the network device. In subsequent communication between the network device and the terminal device, they will use these N BPLs for data transmission.
[0237] During communication, obstructions and poor diffraction capabilities in high-frequency channels can cause the currently serving beam to be blocked, preventing signal transmission. To prevent sudden communication interruptions in the event of beam obstruction, appropriate mechanisms need to be introduced to detect beam quality and quickly restore the link in the event of obstruction.
[0238] Figure 4 illustrates a schematic diagram of a link failure recovery process. As shown in Figure 4, it may include the following steps.
[0239] 410, Beam failure detection.
[0240] The terminal device measures the reference signal set for beam failure detection (RS set) to determine if the link between the terminal device and the network device has failed.
[0241] There are many ways for a terminal device to determine that the link between it and the network device has failed, and this application embodiment does not limit this. For example, when the terminal device determines that the channel quality information of all or part of the reference signals in the beam failure detection RS set for N consecutive beam failure detections is less than or equal to the link failure detection threshold, the terminal device can determine that the link between the terminal device and the network device has failed. Here, N is an integer greater than or equal to 1.
[0242] 420, Identify candidate reference signals.
[0243] The terminal device can identify reference signals in the candidate beam identification (RS) set, and can restore the link based on these reference signals. The process of the terminal device identifying reference signals can be understood as the terminal device determining reference signals (newly identified beams) from the candidate beam identification set whose channel quality is greater than or equal to the link failure recovery threshold.
[0244] 430, The terminal device sends a link failure recovery request to the network device.
[0245] 440. The network device sends a link failure recovery response message to the terminal device.
[0246] In step 430, in other words, the terminal device can send a beam failure recovery request (BFRQ) message to the network device. Through this BFRQ message, the terminal device can indicate information such as cell information of the cell with the link failure to the network device.
[0247] Before the terminal device sends a link failure recovery request, the network device cannot know how many cells have experienced link failures. Therefore, resources are generally reserved according to the maximum number of cells that may experience link failures.
[0248] In addition, terminal devices typically report BFRQ information via MAC-CE. MAC-CE indicating link failure recovery request information can indicate cell information for multiple link failure cells. When allocating resources for link failure recovery request information to terminal devices, network devices generally design the MAC-CE format based on the maximum number of potentially link failure cells, since they do not know the exact number of link failure cells.
[0249] Therefore, when the terminal device determines that only one or a few cells in the configured cells have experienced link failure and needs to send a link failure recovery request, it will result in a waste of resources.
[0250] In view of this, this application proposes a method that can rationally allocate resources and reduce resource waste.
[0251] The various embodiments provided in this application will now be described in detail with reference to the accompanying drawings.
[0252] Figure 5 is a schematic interactive diagram of method 500 provided in an embodiment of this application. Method 500 may include the following steps.
[0253] 510 indicates that at least one cell's link has failed.
[0254] The terminal device determines that the link in at least one cell has failed. In other words, the terminal device determines that the link in one or more cells has failed, or the terminal device detects that the link in one or more cells has failed. The embodiments of this application do not limit the reasons for the link failure. For example, the link may fail when the beam is blocked or the signal quality deteriorates.
[0255] There are many ways a terminal device can determine that the link between itself and the cell has failed.
[0256] For example, when a terminal device determines that the channel quality of the reference signal used for beam failure detection in the cell, or when the terminal device determines that the channel quality of all or part of the reference signals in the set of reference signals used for beam failure detection in the cell is less than a preset threshold N times consecutively, the terminal device can determine that the link between the terminal device and the cell has failed. Here, N is an integer greater than or equal to 1. The preset threshold, or link failure detection threshold, or link failure threshold, can be a pre-configured or pre-defined threshold value; this embodiment does not limit this.
[0257] For example, suppose the reference signals in the reference signal set used for beam failure detection satisfy the QCL relationship with the demodulation reference signal of the PDCCH, or use the same TCI state as the PDCCH. When the channel quality information (such as RSRP, CQI, BLER, SINR, SNR, etc.) of some or all of the reference signals in this reference signal set is lower than the beam failure detection threshold, it is determined to be a beam failure. This beam failure detection threshold can also be called a predetermined threshold, a link failure detection threshold, or simply a link failure threshold. It should be understood that any threshold used for link failure detection can be this beam failure detection threshold, and the embodiments of this application do not limit the name of this beam failure detection threshold. Optionally, this beam failure detection threshold can be configured by the network device, or it can be the same threshold as the radio link failure out-of-sync threshold. Optionally, when the network device is configured with a beam failure detection threshold, the beam failure detection threshold is used to detect beam failure; when the network device is not configured with a beam failure detection threshold, the wireless link out-of-sync threshold can be used as the beam failure detection threshold to detect beam failure.
[0258] It should be understood that the embodiments of this application do not limit the way in which the terminal device determines that the link between the terminal device and the cell has failed, and any way that can make the terminal device determine that the link between the terminal device and the cell has failed is applicable to the embodiments of this application.
[0259] 520, the terminal device sends a first indication message to the network device, the first indication message indicating information about the link-failed cell, wherein the first indication message is determined based on the situation of the link-failed cell.
[0260] The terminal device sends a first indication message to the network device, which can then restore the cell with the failed link based on the first indication message.
[0261] It should be understood that when a terminal device sends a first indication message to a network device, it can mean that the terminal device sends the first indication message to the network device where the link failure occurred, and the link between the terminal device and the network device is restored through that network device. Alternatively, the terminal device can send the first indication message to another network device, and the link between the terminal device and the network device is restored through that other network device.
[0262] The information for a link-failed cell may include: the cell's identification information, and / or, reference signal information, wherein the reference signal information is used to restore the link in the link-failed cell. It is understood that the reference signal information and the link-failed cell's identification information can be sent to the network device separately, or they can be sent to the network device together through the first indication information. For example, the link-failed cell's information may include the link-failed cell's identification information; or, the link-failed cell's information may include the reference signal information; or, the link-failed cell's information may include both the link-failed cell's identification information and the reference signal information. In other words, the first indication information may indicate the link-failed cell's identification information; or, the first indication information may indicate the reference signal information; or, the first indication information may indicate both the link-failed cell's identification information and the reference signal information.
[0263] The reference signal information may include a reference signal resource index and / or the channel quality of the reference signal (such as one or more of the following: RSRP, SINR, RSRQ, CQI, or SNR, etc.). For example, reference signal resources may include CSI-RS resources and / or SSB resources.
[0264] Reference signal information can be understood as reference signal resource information, which includes the index of the reference signal resource and / or the channel quality of the reference signal on the reference signal resource (such as one or more of the following: RSRP, SINR, RSRQ, CQI, or SNR, etc.).
[0265] The first indication information, for example, can be MAC-CE, meaning that BFRQ information can be indicated via MAC-CE. For simplicity, the term "first indication information" will be used consistently below.
[0266] One possible implementation is that the first indication information, which indicates information about the cell with the failed link, may include: the identifier (ID) (or index (ID)) of the cell with the failed link, which will be used as an example below. For instance, assuming that a link failure occurs in both the first and second cells, the terminal device can indicate the information of the first and second cells, such as the IDs of the first and second cells, to the network device. By sending the first indication information to the network device, the terminal device can learn which cells have experienced link failures.
[0267] Optionally, the number of cells with failed links reported by the terminal device can be less than or equal to the number of cells with failed links detected. For example, assuming that in step 510, the terminal device determines that T1 cells have failed links, the first indication information sent by the terminal device in step 520 can carry information about T2 cells, such as the identifiers (or indices, IDs) of the T2 cells. Here, T1 and T2 are both integers greater than or equal to 1, and T1 is greater than or equal to T2. For ease of description, the following example illustrates this by assuming that the number of cells with failed links reported by the terminal device is equal to the number of cells with failed links detected.
[0268] Another possible implementation is that the first indication information, which indicates information about the cell with the failed link, may include: the first indication information indicating reference signal information; that is, the first indication information may also report information about a new link to restore the cell with the failed link. The reference signal information is used to restore the link of the cell with the failed link. For example, the first indication information may indicate T3 reference signal information for restoring the link of T2 cells. Here, T3 is an integer greater than or equal to 1.
[0269] Optionally, the circumstances of a link-failed cell may include one or more of the following: the number of link-failed cells, the payload of information about the link-failed cells, whether a reference signal for recovering the link-failed cell is identified, etc.
[0270] The first indication information is determined based on the situation of the link-failed cell and may include:
[0271] Option 1: The format of the first indication information is determined based on the situation of the link-failed cell; and / or,
[0272] Option 2: The resources carrying the first indication information are determined based on the situation of cells with link failures.
[0273] The following text will describe Scheme 1 and Scheme 2 in detail.
[0274] 530, the network device restores the link of the cell that failed to connect, based on the first indication information.
[0275] After receiving the first instruction information, the network device restores the links of some or all of the cells in the cell with the failed link as indicated in the first instruction information.
[0276] For example, suppose that in step 520, the terminal device reports a link failure in T2 cells via the first indication information. Then, after receiving the first indication information, the network device restores the links in T4 cells. Here, T4 cells belong to T2 cells, T4 is an integer greater than or equal to 1, and T4 is less than or equal to T2.
[0277] The above Scheme 1 and Scheme 2 are introduced in detail below.
[0278] Scheme 1: The format of the first indication information is determined based on the situation of the link failure cell.
[0279] First, introduce the format of the first indication information.
[0280] Optionally, the format of the first indication information can be the first format or the second format. For example, the first format can be called the short format, and the second format can be called the long format; or, the first format can be called single entry, and the second format can be called multi entry.
[0281] It should be understood that the first format, the short format, or single entry is only a naming and does not limit the protection scope of the embodiments of the present application; the second format, the long format, or multi entry is only a naming and does not limit the protection scope of the embodiments of the present application. Hereinafter, the first format and the second format are uniformly used for expression.
[0282] Optionally, the first format and the second format satisfy one or more of the following conditions:
[0283] The number of bits occupied by the first indication information in the first format is less than the number of bits occupied by the first indication information in the second format; or,
[0284] The first indication information in the first format indicates the information of N1 link failure cells, and the first indication information in the second format indicates the information of N2 link failure cells, where N1 and N2 are integers greater than or equal to 1, and N1 < N2. In other words, the number of link failure cells indicated by the first indication information in the first format is less than the number of link failure cells indicated by the first indication information in the second format; or,
[0285] The information payload included in the first indication information in the first format is less than the information payload included in the first indication information in the second format.
[0286] It should be understood that the above two formats are only exemplary descriptions, and the embodiments of the present application are not limited thereto. For example, more formats can be designed.
[0287] It should also be understood that the above number of bits, the number of information of link failure cells, and the payload can all refer to the maximum value. For example, the first indication information in the first format indicates the information of N1 link failure cells, which means that the first indication information in the first format indicates at most N1 link failure cells.
[0288] This can be understood as, taking into account the situation of link failure cells, such as the number of link failure cells, multiple formats of first indication information can be predefined, such as two formats (first format and second format) of first indication information. Thus, the appropriate format of first indication information can be selected according to the situation of link failure cells, reducing the waste of resources.
[0289] The following sections describe the cases where the first instruction information is in the first format and the second format, respectively.
[0290] 1) The format of the first instruction information is the first format.
[0291] Optionally, the first indication information in the first format may include one or more of the following: serving cell identifier field (serving cell ID field), first field, second field, or reserved bits.
[0292] The serving cell ID field can indicate the cell ID of the link failure using a status value.
[0293] It should be understood that the Serving Cell ID field is merely a naming convention and does not limit the scope of protection of the embodiments of this application. The embodiments of this application do not preclude the use of other names to represent the same meaning in future protocols. The Serving Cell ID field will be used in the following description.
[0294] The first indication information in the first format can report the cell ID of the failed link via a status value. For example, the first indication information includes a serving cell ID field, which indicates the cell ID of the failed link via a status value. Alternatively, the first indication information may include an SCellIndex field, which indicates the ID of the serving cell of the failed link via a status value. The serving cell ID field can be called either the ServCellIndex field or the SCellIndex field.
[0295] For example, if a network device is configured to serve X cells (i.e., at most X cells) for a certain terminal device, or if a network device is configured to serve X cells for a certain terminal device that require link failure detection, or if a network device is configured to serve X cells for a certain terminal device that can perform link failure recovery, then the serving cell identifier field is... Each bit indicates which cell among these cells experienced a link failure. Here, X is an integer greater than or equal to 1. This indicates that log2(X) is rounded up. It should be understood that the rounding method here can also be rounding down or rounding to the nearest integer, etc.
[0296] For example, if X = 31, then the cell ID of the link failure can be indicated by 5 bits, such as 00001, which indicates that the cell with cell ID 1 has experienced a link failure; 00010, which indicates that the cell with cell ID 2 has experienced a link failure, and so on.
[0297] The first field, also known as the B field, indicates whether the corresponding second field exists for the link-failed cell indicated by the serving cell ID field. The following explanation uses the B field as an example.
[0298] It should be understood that the first field and the B field are merely names and do not limit the scope of protection of the embodiments of this application. The embodiments of this application do not preclude the use of other names to represent the same meaning in future agreements. The B field will be used for description below.
[0299] The second field, also known as the new beam info field, indicates information about the reference signal used to recover the link of the failed cell indicated by the serving cell ID field. This new beam info can be a reference signal resource index.
[0300] It should be understood that the second field and the new beam info field are merely names and do not limit the scope of protection of the embodiments of this application. The embodiments of this application do not preclude the use of other names to represent the same meaning in future agreements. The new beam info field will be used for description below.
[0301] The information about the reference signal includes a reference signal resource index and / or the channel quality of the reference signal. Channel quality may include one or more of the following: reference signal receiving power (RSRP), signal to interference plus noise ratio (SINR), reference signal receiving quality (RSRQ), channel quality indication (CQI), or signal noise ratio (SNR), etc.
[0302] It should be understood that the reference signal resource can be one or more reference signal resources in the set of candidate reference signal resources.
[0303] The B field indicates whether the serving cell ID field indicates whether the link failure cell has a corresponding new beam info field. This can be understood as the B field indicating whether a new beam info field exists, or in other words, whether a reference signal for link recovery exists, or whether reference signal resources for link recovery exist.
[0304] Each cell indicated in the serving cell ID field can have a corresponding B field. Optionally, a cell with a failed link corresponds to 1 bit in the B field, or a cell with a failed link corresponds to a 1-bit B word field. For example, if the cell with a failed link includes a first cell and a second cell, the serving cell identifier field indicates that the first cell and the second cell have experienced a link failure. The B field corresponding to the first cell indicates whether the first cell has a second field, and the B field corresponding to the second cell indicates whether the second cell has a second field.
[0305] For example, the first indication information in the first format can contain a maximum of two bytes (the first byte and the second byte), where the first byte includes the B field (the first byte may also include the serving cell identifier field). When the B field is 0, the content of the second byte does not exist, or the content of the second byte is the same as the content of the first byte, or the second byte does not have a new beam info field; when the B field is 1, the content of the second byte exists, or the second byte has a new beam info field. Alternatively, when the B field is 1, the content of the second byte does not exist, or the content of the second byte is the same as the content of the first byte, or the second byte does not have a new beam info field; when the B field is 0, the content of the second byte exists, or the second byte has a new beam info field.
[0306] As shown in Figure 6 or Figure 7, an octet represents a byte consisting of 8 bits. Figure 6 or Figure 7 includes two octets, which are designated Oct 1 and Oct 2 for distinction. As shown in Figure 6 or Figure 7, this MAC-CE includes two bytes: the first byte Oct 1 and the second byte Oct 2. In the example shown in Figure 6 or Figure 7, the second byte contains content, or the second byte contains a "new beam info" field.
[0307] It should be understood that the first byte and the second byte are merely names used for distinction and do not limit the scope of protection of the embodiments of this application.
[0308] It should be understood that, taking a single cell as an example, the relationship between the serving cell ID field, the B field, and the new beam info field can be as follows: the serving cell ID field indicates the ID of a cell with a failed link, the B field indicates whether the cell has a new beam info field, and the new beam info field indicates information about the reference signal used to restore the cell's link.
[0309] It should also be understood that for each cell indicated by the serving cell ID field, there can be a corresponding B field to indicate whether the cell has a new beam info field, which indicates information for the reference signal used to restore the cell link.
[0310] The reserved bit (R bit) is typically set to 0. This R bit generally does not indicate any information.
[0311] The foregoing has exemplarily described the contents that may be included when the first instruction information is in a first format. It should be understood that the embodiments of this application are not limited thereto. Furthermore, the first instruction information in a first format may have multiple forms. The following uses MAC-CE as the first instruction information and illustrates several cases in conjunction with examples.
[0312] In the following cases, the serving cell identifier is the same as the serving cell ID.
[0313] In case 1, X = 31, the maximum number of reference signal resources in the candidate beam list used to restore a cell link is 64, so the MAC-CE of the first format can occupy two bytes.
[0314] In Case 1, the MAC-CE can be at least one of the forms shown in Example 1 and Example 2.
[0315] Example 1: Table 1 and Figure 6 show a possible MAC CE format for indicating BFRQ information using MAC-CE, in which the B field is absent.
[0316] As shown in Figure 6, the MAC-CE may include a serving cell ID field, a new beam info field, and reserved bits.
[0317] Serving Cell ID field, occupying 5 bits: indicates the ID of the cell whose link has failed as indicated by the MAC-CE.
[0318] The new beam info field, occupying 6 bits, indicates the reference signal resource index of the cell whose link failed, as indicated by the cell ID field, indicating the recovery of the serving cell.
[0319] “R” indicates a reserved bit, which is usually set to “0”.
[0320] Table 1
[0321]
[0322] Example 2: Table 2 and Figure 7 show a possible MAC CE format for indicating BFRQ information using MAC-CE, in which the B field is present.
[0323] As shown in Figure 7, one Oct represents a byte consisting of 8 bits. Figure 7 includes two Octs, which are labeled Oct 1 and Oct 2 for distinction. As shown in Figure 7, the MAC-CE may include the serving cell ID field, the new beam info field, the B field, and reserved bits.
[0324] Serving Cell ID field, occupying 5 bits: indicates the ID of the cell whose link has failed as indicated by the MAC-CE.
[0325] Field B, occupying 1 bit: indicates whether the reference signal for the cell whose link failed, as indicated by the Cell ID field, exists. Further, if field B is "1", it indicates the presence of the new beam info field. If field B is "0", it indicates the absence of the new beam info field. Of course, the meanings of the values "1" and "0" are merely examples, and this application is not limited to them.
[0326] The new beam info field, occupying 6 bits, indicates the reference signal resource index of the cell whose link failed, as indicated by the cell ID field, indicating the recovery of the serving cell.
[0327] “R” represents the reserved bit, which is usually set to “0”.
[0328] Table 2
[0329]
[0330] Case 2: If X is less than or equal to 8, the maximum number of reference signal resources in the candidate beam list used to restore a cell link is 16. In this case, the MAC-CE of the first format can occupy one byte.
[0331] In case 2, the MAC-CE can be at least any of the forms shown in Examples 3 and 4.
[0332] Example 3: Table 3 and Figure 8 show a possible MAC CE format for indicating BFRQ information using MAC-CE, in which the B field is absent.
[0333] As shown in Figure 8, an Oct represents a byte consisting of 8 bits. Figure 8 includes one Oct, denoted as Oct 1. As shown in Figure 8, the MAC-CE may include a serving cell ID field, a new beam info field, and reserved bits.
[0334] The Serving Cell ID field, occupying 3 bits, indicates the ID of the cell whose link, as indicated by the MAC-CE, has failed.
[0335] The new beam info field, occupying 4 bits, indicates the reference signal resource index of the cell whose link failed, as indicated by the cell ID field, indicating the recovery of the serving cell.
[0336] “R” represents the reserved bit, which is usually set to “0”.
[0337] Table 3
[0338]
[0339] Example 4: Table 4 and Figure 9 show one possible MAC CE format for indicating BFRQ information using MAC-CE, in which the B field is present.
[0340] As shown in Figure 9, an Oct represents a byte consisting of 8 bits. Figure 9 includes one Oct, denoted as Oct 1. As shown in Figure 9, the MAC-CE may include the serving cell ID field, the new beam info field, and the B field.
[0341] The Serving Cell ID field, occupying 3 bits, indicates the ID of the cell whose link, as indicated by the MAC-CE, has failed.
[0342] Field B, occupying 1 bit: indicates whether the reference signal for the cell whose link failed, as indicated by the Cell ID field, exists. Further, if field B is "1", it indicates the presence of the new beam info field. If field B is "0", it indicates the absence of the new beam info field. Of course, the meanings of the values "1" and "0" are merely examples, and this application is not limited to them.
[0343] The new beam info field, occupying 4 bits, indicates the reference signal resource index of the cell whose link failed, as indicated by the cell ID field, indicating the recovery of the serving cell.
[0344] Table 4
[0345]
[0346] Case 3: If X is less than or equal to 8, the maximum number of reference signal resources in the candidate beam list used to restore a cell link is 32. In this case, the MAC-CE of the first format can occupy one byte.
[0347] In case 3, MAC-CE can at least be in the form shown in Example 5.
[0348] Example 5: Table 5 shows one possible MAC CE format for indicating BFRQ information using MAC-CE, where the B field is absent. Alternatively, it can be as shown in Figure 10.
[0349] As shown in Figure 10, an Oct represents a byte consisting of 8 bits. Figure 10 includes one Oct, denoted as Oct1. As shown in Figure 10, the MAC-CE may include a serving cell ID field and a new beam info field.
[0350] Serving Cell Identifier Field, occupying 3 bits: indicates the ID of the cell whose link has failed as indicated by the MAC-CE.
[0351] The new beam info field, occupying 5 bits, indicates the reference signal resource index of the cell whose link failed, corresponding to the cell identifier field for restoring service.
[0352] Table 5
[0353]
[0354] Case 4: X is less than or equal to 16. The maximum number of reference signal resources in the candidate beam list used to recover a cell link is 16. In this case, the MAC-CE of the first format can occupy one byte.
[0355] In case 4, MAC-CE can at least be in the form shown in Example 6.
[0356] Example 6: Table 6 and Figure 11 show a possible MAC CE format for indicating BFRQ information using MAC-CE, in which the B field is absent.
[0357] As shown in Figure 11, an Oct represents a byte consisting of 8 bits. Figure 11 includes one Oct, denoted as Oct1. As shown in Figure 11, the MAC-CE may include a serving cell ID field and a new beam info field.
[0358] The Serving Cell ID field, occupying 4 bits, indicates the ID of the cell whose link, as indicated by the MAC-CE, has failed.
[0359] The new beam info field, occupying 4 bits, indicates the reference signal resource index of the cell whose link failed, as indicated by the cell ID field, indicating the recovery of the serving cell.
[0360] Table 6
[0361] Serving cell ID (new beam info)
[0362] The foregoing has exemplarily described several situations. It should be understood that the embodiments of this application are not limited thereto, and any variations belonging to the above situations fall within the protection scope of the embodiments of this application.
[0363] The previous section introduced the case where the first instruction information is in the first format; the following section introduces the case where the first instruction information is in the second format.
[0364] 2) The format of the first instruction information is the second format.
[0365] Optionally, the first indication information in the second format may include one or more of the following: serving cell ID field, B field, new beam info field, or reserved bits.
[0366] The Serving Cell ID field can indicate the ID of a cell with a failed link using a bitmap. Each bit in the bitmap corresponds to a Ci field. Assuming a Ci field value of 1 indicates a link failure in the cell corresponding to that Ci field, then if the Serving Cell ID field indicates the IDs of T2 cells with failed links, it can be understood that T2 Ci fields in the Serving Cell ID field have a value of 1. The C0 field can be an R field.
[0367] The second format of the first indication information can report the cell ID of the link failure using a bitmap. For example, the first indication information includes an indication field, such as the Ci field. The Ci field indicates the ID of the link-failed cell (or the ID of the link-failed SCell, or the ID of the serving cell of the link failure) using a bitmap. The Ci field is merely a designation for differentiation and does not limit the scope of protection of the embodiments of this application; where i is an integer greater than or equal to 0.
[0368] Optionally, when the Ci field is 1, it indicates that the cell with cell ID i has experienced a link failure, or indicates that SCellIndex i has experienced a link failure, or indicates that ServCellIndex i has experienced a link failure, or indicates that the i-th cell among the cells requiring link failure detection has experienced a link failure, or the i-th cell among the active cells has experienced a link failure, or indicates that the i-th cell among the serving cells configured by the network device for the terminal device has experienced a link failure.
[0369] Optionally, the Ci field can also indicate whether the new beam info field corresponding to cell ID i exists. For example, when the Ci field is 1, it indicates that the new beam info field corresponding to cell ID i exists. Alternatively, the Ci field can also indicate that the new beam info field corresponding to SCellIndex i exists, or that the new beam info field corresponding to ServCellIndex i exists, or that the new beam info field corresponding to the i-th cell among the cells requiring link failure detection exists, or that the new beam info field corresponding to the i-th cell among the active cells exists, or that the new beam info field corresponding to the i-th cell among the serving cells configured by the network device for the terminal device exists; when the Ci field is 0, it indicates that the new beam info field corresponding to cell ID i does not exist, or that the new beam info field corresponding to SCellIndex i does not exist, or that the new beam info field corresponding to ServCellIndex i does not exist, or that the new beam info field corresponding to the i-th cell among the cells requiring link failure detection does not exist, or that the new beam info field corresponding to the i-th cell among the active cells does not exist, or that the new beam info field corresponding to the i-th cell among the serving cells configured by the network device for the terminal device does not exist.
[0370] For example, a network device may be configured with X serving cells for a certain terminal device, or a network device may be configured with X serving cells for a certain terminal device that require link failure detection, or a network device may be configured with X serving cells for a certain terminal device that can perform link failure recovery. Then the Ci field can have X bits, where i can be greater than or equal to 1 and less than or equal to X. In other words, X bits can be used to indicate which of these cells experienced link failure.
[0371] Optionally, the fields included in the first indication information of the second format may include the following cases.
[0372] Case 1: The first indication information in the second format may include: X Ci fields and m second fields. Among the X Ci fields, m Ci fields have a value of 1, and these m Ci fields with a value of 1 correspond one-to-one with the m second fields. m is an integer less than or equal to X.
[0373] Case 2: The first indication information in the second format may include: X Ci fields, b first fields, and m second fields. Among the X Ci fields, b Ci fields have a value of 1, and these b Ci fields with a value of 1 correspond one-to-one with the b first fields; among the b first fields, m first fields have a value of 1, and these m first fields with a value of 1 correspond one-to-one with the m second fields. b is an integer less than or equal to X, and m is an integer less than or equal to b.
[0374] Case 3: The first indication information in the second format may include: X Ci fields, X first fields, and m second fields. The X Ci fields correspond one-to-one with the X first fields. Of the X Ci fields, m1 Ci fields have a value of 1; of the X first fields, m2 first fields have a value of 1; there are m Ci fields and first fields that have a corresponding relationship and all have a value of 1, and these m Ci fields and first fields with a value of 1 correspond one-to-one with the m second fields. m1 and m2 are integers less than or equal to X. Optionally, m1 and m2 are integers greater than or equal to m.
[0375] The above one-to-one correspondence can be understood as a sequential correspondence.
[0376] The above three scenarios are merely examples; other possible scenarios may exist, and the embodiments in this application are not limited thereto.
[0377] For example, if X = 31, then the cell IDs indicating link failures are indicated by 31 bits. For example, if both the C5 and C7 fields are 1, it indicates that the cell with cell ID 5 and the cell with cell ID 7 have experienced link failures.
[0378] The B field, the new beam info field, and the reserved bits can be referred to the description of the first format in the first indication information (i.e., the description of the first format in "1" above), and will not be repeated here.
[0379] Similarly, when the first instruction information is in the second format, it can take multiple forms, as shown in Figures 12 to 14.
[0380] For example, take Figure 12 as an example.
[0381] The Serving Cell ID field indicates the IDs of m cells (which can be understood as m Ci fields having a value of 1 in the Serving Cell ID field). This can be interpreted as the m cells experiencing link failures, where m is an integer greater than or equal to 1. The Serving Cell ID field indicates the IDs of the m cells, and correspondingly, these m cells correspond to m second fields. For example, Figure 12 includes a reserved field R, and Figure 12 may include m second fields, which are denoted as Second Field 1, Second Field 2, ... for distinction. The C0 field can be the R field; that is, the C0 field may include the reserved field.
[0382] For example, take Figure 13 as an example.
[0383] The Serving Cell ID field indicates the IDs of (m+1) cells (which can be understood as (m+1) Ci fields having a value of 1 in the Serving Cell ID field), indicating that a link failure has occurred in these (m+1) cells. The Serving Cell ID field indicates the IDs of (m+1) cells, and correspondingly, these (m+1) cells correspond to (m+1) second fields. For example, Figure 13 does not include the reserved field R, but Figure 13 may include (m+1) second fields, which, for distinction, are respectively denoted as second field a0, second field a1, second field a2, second field am, ... The C0 field can be the R field, meaning that the C0 field may include the reserved field.
[0384] For example, take Figure 14 as an example.
[0385] The Serving Cell ID field indicates the IDs of p1 cells (which can be understood as p1 Ci fields with a value of 1 in the Serving Cell ID field). This can be interpreted as a link failure occurring in these p1 cells, where p1 is an integer greater than or equal to 1. Correspondingly, these p1 cells can correspond to p2 first fields (Bi fields), where p2 is an integer greater than or equal to 1.
[0386] Optionally, p2 can be equal to p1, B bj The domain corresponds to the j-th cell among the cells with link failures indicated by the serving cell ID domain, B. bj It can be equal to B j Among them, B bj This represents the bj-th B-field, for example, bj = 1, B bj This represents the first B field, namely B1 (i.e., j = 1). Alternatively, p2 can be equal to X, B bj The domain corresponds to the b-th cell in X cells. j There are 1 cell. Correspondingly, each of the p2 first fields indicates m second fields (which can be understood as m Bi fields having a value of 1). These m first fields sequentially correspond to B... bj The cell corresponding to a field value of 1. For example, Figure 14 includes a reserved field R. Figure 14 may include m second fields, which are denoted as second field a1, second field a2, ... for distinction.
[0387] The above examples, in conjunction with Figures 12 to 14, exemplarily illustrate several possible forms of the first instruction information in the second format. It should be understood that the embodiments of this application are not limited thereto.
[0388] Optionally, if the terminal device cannot identify the reference signal for restoring the cell with the failed link, the way the first indication information in the first format or the second format indicates the reference signal information for restoring the cell with the failed link may include any one of the following two methods.
[0389] Method 1: The first indication information does not include the B field, but includes the new beam info field. The new beam info field indicates the reference signal information used to recover the cell with the link failure. When the terminal device identifies a reference signal that is greater than the link failure recovery threshold, the new beam info field can indicate information such as the resource index of a certain reference signal; otherwise, the new beam info field can be a special state value indicating that there is no reference signal greater than the link failure recovery threshold (or that no reference signal for recovering the cell with the link failure has been identified).
[0390] Method 2: The first indication information includes a B field and a new beam info field. The B field indicates whether there is a reference signal greater than the link failure recovery threshold (or whether a reference signal for recovering a link failure cell has been identified). If the B field indicates that a reference signal for recovering a link failure cell has been identified, then a new beam info field exists, and this new beam info field indicates information such as a resource index used to recover a reference signal for a link failure cell.
[0391] The foregoing exemplarily introduced two formats, a first format (i.e., the first format) and a second format (i.e., the second format). It should be understood that the embodiments of this application are not limited to these. For example, they can be further subdivided. For instance, they may include a first format, a second format, and a third format. The number of bits occupied by the first indication information in the first format is less than the number of bits occupied by the first indication information in the second format, and the number of bits occupied by the first indication information in the second format is less than the number of bits occupied by the first indication information in the third format. Alternatively, the number of link-failed cells indicated by the first indication information in the first format is less than the number of link-failed cells indicated by the first indication information in the second format, and the number of link-failed cells indicated by the first indication information in the second format is less than the number of links-failed cells indicated by the first indication information in the third format. Alternatively, the information payload of the first indication information in the first format is less than the information payload of the first indication information in the second format, and the information payload of the first indication information in the second format is less than the information payload of the first indication information in the third format.
[0392] It should be understood that the aforementioned number of bits, number of links to failed cells, and load can all refer to maximum values. For example, the number of bits occupied by the first indication information in the first format indicates the maximum number of bits that can be sent under this format.
[0393] The following describes the format for determining the first indication information based on the case of a cell with a failed link.
[0394] Optionally, the circumstances of a link-failed cell may include one or more of the following: the number of link-failed cells, the payload of information about the link-failed cells, whether a reference signal for recovering the link-failed cell is identified, etc.
[0395] It is understood that the format of the first indication information may be determined based on one or more of the following: the number of link-failed cells, the load of information on the link-failed cells, or whether a reference signal for recovering the link-failed cells is identified, etc.
[0396] Optionally, the format of the first indication information may be determined by the terminal device based on the case of the cell with the link failure, or it may be determined by the network device based on the case of the cell with the link failure.
[0397] Optionally, the format of the first indication information may be determined directly based on the situation of the link-failed cell, or it may be determined indirectly based on the situation of the link-failed cell.
[0398] The following section explains several possible implementation methods.
[0399] In implementation method 1, the terminal device determines the format of the first indication information based on the situation of the cell with the failed link.
[0400] For example, multiple formats correspond to the cases of link failure cells, and for distinction, they are referred to as the first correspondence.
[0401] This can be understood as the terminal device determining the format of the first indication information based on the situation of the cell with the failed link and in conjunction with the first correspondence. This first correspondence can be pre-set, such as as specified in network device configuration or protocols, or it can be pre-saved; there is no limitation on this.
[0402] The first correspondence can take the form of a correspondence between multiple formats and the number of links-failed cells. The terminal device can, based on the number of links-failed cells, use the first indication information in the corresponding format according to this correspondence.
[0403] For example, when the number of failed cells is less than or equal to a preset first threshold, the format of the first indication information can be a first format; when the number of failed cells is greater than the preset first threshold, the format of the first indication information can be a second format. The preset first threshold can be predefined, such as by a protocol or network device; it can also be configured by the network device for the terminal device; or it can be an empirical value, etc., and there are no restrictions on this.
[0404] Alternatively, the first correspondence can take the form of a correspondence between multiple formats and the load of information about the link-failed cell. The terminal device can then use the first indication information in the appropriate format based on the load of information about the link-failed cell, according to this correspondence between the multiple formats and the load of information about the link-failed cell.
[0405] For example, when the load of information from a cell with a failed link is less than or equal to a preset second threshold, the format of the first indication information can be a first format; when the load of information from a cell with a failed link is greater than the preset second threshold, the format of the first indication information can be a second format. The preset second threshold can be predefined, such as by a protocol or network device; it can also be configured by the network device for the terminal device; or it can be an empirical value, etc., and there are no limitations on this.
[0406] Based on the above implementation method 1, the terminal device can determine the format of the first indication information according to the situation of the cell with the failed link.
[0407] In implementation method 2, the terminal device determines the format of the first instruction information based on the resources carrying the second instruction information.
[0408] For example, multiple formats have a correspondence with resources carrying the second instruction information, which is referred to as the second correspondence for distinction.
[0409] Optionally, after determining that the cell link has failed, the terminal device may send a second indication message to the network device, which indicates that the cell link has failed. For example, the terminal device sends the second indication message to the network device to notify the network device that a cell link failure has occurred.
[0410] Optionally, the second instruction information can also be used to request the resource carrying the first instruction information.
[0411] It should be understood that the first indication information and the second indication information in the embodiments of this application are both information sent by the terminal device to the network device to restore the link-failed cell when a link failure occurs in a cell. They can be collectively referred to as link failure recovery request information. The terminal device may send beam failure recovery request information in various ways, which are described in detail below.
[0412] For the sake of distinction and without loss of generality, the resource carrying the first indication information is referred to as the first resource, and the resource carrying the second indication information is referred to as the second resource. The first resource can be a PUCCH resource or a PUSCH resource; the second resource can be a PUCCH resource or a physical random access channel (PRACH) resource, without limitation.
[0413] It should be understood that the designations "first resource" and "second resource" are merely for distinction, and those skilled in the art should understand their meaning. For example, when a terminal device requests the allocation of a first resource from a network device, it indicates that the terminal device is requesting the network device to allocate resources for carrying the first indication information, and does not represent a request for a specific block of resources. Similarly, when a network device allocates a first resource to a terminal device, it indicates that the network device has allocated a block of resources to the terminal device for carrying the first indication information, which can represent a specific block of resources.
[0414] The second resource can not only carry the second instruction information, but also carry data, and so on.
[0415] The first resource can be used not only to carry the first instruction information, but also to carry data or other information. Alternatively, the first resource can be used solely to carry the first instruction information. There is no limitation in this regard.
[0416] The terminal device can determine the format of the first instruction information based on the resources carrying the second instruction information and in conjunction with the second correspondence. The second correspondence can be pre-set, such as as specified by network device configuration or protocol, or it can be pre-saved; there is no limitation on this.
[0417] For example, two second resources can be configured, denoted as second resource #1 and second resource #2, respectively. For instance, second resource #1 and second resource #2 can be distinguished by a cycle shift. Alternatively, they can be distinguished by other methods (e.g., by frequency division; or by time division; or by code division), and there is no limitation thereto.
[0418] The second resource #1 and the second resource #2 are associated with or correspond to first indication information in different formats. The terminal device determines the format of the first indication information based on whether the resource carrying the second indication information is the second resource #1 or the second resource #2.
[0419] There can be multiple forms of association or correspondence.
[0420] For example, second resource #1 corresponds to first indication information in a first format, and second resource #2 corresponds to first indication information in a second format; or, the format of the first indication information corresponding to second resource #1 is the first format, and the format of the first indication information corresponding to second resource #2 is the second format. As another example, second resource #1 is associated with first indication information for a smaller payload, and second resource #2 is associated with first indication information for a larger payload. As another example, second resource #1 is associated with first indication information requesting a smaller resource (i.e., a smaller first resource), and second resource #2 is associated with first indication information requesting a larger resource (i.e., a larger first resource). As another example, second resource #1 corresponds to first indication information carrying information for a maximum of A cells, and second resource #2 corresponds to first indication information carrying information for a maximum of B cells.
[0421] It should be understood that the above are only some possible associations or corresponding forms listed, and the embodiments of this application are not limited thereto. Any variations of the above forms fall within the protection scope of the embodiments of this application.
[0422] Where A and B are both integers greater than or equal to 1, and A is less than B. The specific values of A and B are not limited in this embodiment. A and B can be predetermined by the network device or protocol, configured by the network device, or calculated by the terminal device itself. For example, B = X, where X is the maximum number of serving cells configured by the network device for the terminal device, or the maximum number of serving cells configured by the network device for the terminal device that require link failure detection, or the maximum number of serving cells configured by the network device for a terminal device that can perform link failure recovery. For example, A = 1, B is greater than 1.
[0423] For example, when the terminal device uses the second resource #1 to send the second indication information, the format of the first indication information sent by the terminal device is the first format, that is, the terminal device sends the first indication information in the first format; when the terminal device uses the second resource #2 to send the second indication information, the format of the first indication information sent by the terminal device is the second format, that is, the terminal device sends the first indication information in the second format. The first and second formats are described above and will not be repeated here.
[0424] The terminal device can determine whether to use second resource #1 or second resource #2 to send the second indication information based on the situation of the cell with a failed link. This can be understood as the terminal device determining whether to use second resource #1 or second resource #2 to send the second indication information based on the situation of the cell with a failed link, combined with the aforementioned possible associations or corresponding forms.
[0425] For information on cells experiencing link failures, please refer to the description above; it will not be repeated here.
[0426] For example, when the number of cells with failed links is less than or equal to a preset first threshold, the terminal device uses second resource #1 to send second indication information; when the number of cells with failed links is greater than the preset first threshold, the terminal device uses second resource #2 to send second indication information. This second indication information can be used to notify the network device of cell link failures, and it can also be used to request resources carrying the first indication information.
[0427] Figure 15 illustrates a schematic diagram of the formats of the second resource and the first indication information. Assume that the second resource #1 (e.g., PUCCH, which can be denoted as PUCCH 1) corresponds to the first indication information in the first format, and the second resource #2 (e.g., PUCCH, which can be denoted as PUCCH 1) corresponds to the first indication information in the second format. The first indication information in the first format can, for example, be the MAC-CE in the first format shown in Figures 6 to 11; the first indication information in the second format can, for example, be the MAC-CE in the second format shown in Figures 12 to 14. As shown in Figure 15, the first indication information in the first format may include a serving cell ID field and a second field, such as SCell ID#a and beam#b, respectively. The first indication information in the second format may include a serving cell ID field, which may include one or more Ci fields (i.e., the number of cells) and one or more corresponding second fields, such as SCell ID#a1 and beam#b1, SCell ID#a2 and beam#b2, etc.
[0428] For example, when the terminal device determines that a link failure has occurred in one cell, it sends a second indication message through the second resource #1, and also sends a first indication message in a first format. When the terminal device determines that five cells have experienced link failures, it sends a second indication message through the second resource #2, and also sends a first indication message in a second format. Figure 15 only shows the case where the terminal device sends the second indication message through the second resource #2, and the format of the first indication message is the second format.
[0429] For example, when the payload of the cell information indicating a link failure is less than or equal to a preset second threshold, the terminal device uses second resource #1 to send second indication information; when the payload of the cell information indicating a link failure is greater than the preset second threshold, the terminal device uses second resource #2 to send second indication information. This second indication information can be used to notify the network device of the cell link failure, and it can also be used to request resources carrying the first indication information.
[0430] Based on implementation method 2 described above, the terminal device can determine the resources carrying the second indication information according to the situation of the cell with the failed link, and then determine the format of the first indication information according to the resources carrying the second indication information. Alternatively, it can be understood that the terminal device can indirectly determine the format of the first indication information based on the situation of the cell with the failed link.
[0431] In implementation method 3, the terminal device determines the format of the first instruction information based on the second instruction information.
[0432] For example, multiple formats correspond to the second indication information, or multiple formats correspond to multiple state values of the second indication information, or multiple formats correspond to different cyclic shifts of the sequence of the second indication information. For distinction, this is referred to as the third correspondence.
[0433] This can be understood as the terminal device determining the format of the first instruction information based on the second instruction information and the third correspondence. The third correspondence can be pre-set, such as as specified in network device configuration or protocols, or it can be pre-saved; there is no limitation on this.
[0434] For example, a network device configures a third resource, and a terminal device sends a second indication message on that third resource. When the status value of the second indication message is a first value, the format of the first indication message is a first format; when the status value of the second indication message is a second value, the format of the first indication message is a second format.
[0435] It should be understood that the naming of the third resource is only for differentiation and does not limit the scope of protection of the embodiments of this application.
[0436] It should also be understood that the first value and the second value are different. The first value and the second value are only named for the purpose of differentiation and do not limit the protection scope of the embodiments of this application.
[0437] For example, a network device configures a third resource, and a terminal device sends second indication information on that third resource. When the cyclic shift of the sequence carrying the second indication information is a first cyclic shift, the format of the first indication information is a first format; when the cyclic shift of the sequence carrying the second indication information is a second cyclic shift, the format of the first indication information is a second format.
[0438] Based on the above implementation method 3, the terminal device can determine the format of the first instruction information according to the content of the second instruction information, such as the cyclic shift of the sequence of the second instruction information or the state value.
[0439] Implementation method 4: The terminal device determines the format of the first instruction information based on the amount of resources allocated by the network device.
[0440] For example, when the network device allocates less resources to the terminal device to carry the first instruction information, the terminal device sends the first instruction information in a first format; when the network device allocates more resources to the terminal device to carry the first instruction information, the terminal device sends the first instruction information in a second format.
[0441] Based on the above description of the first and second formats, such as the first format being a short format and the second format being a long format; and the number of bits occupied by the first indication information in the first format being less than the number of bits occupied by the first indication information in the second format; and the information payload included in the first indication information in the first format being less than the information payload included in the first indication information in the second format, etc., it can be understood that the resources required for the first indication information in the first format may be greater than the resources required for the first indication information in the second format. Therefore, in implementation method 4, the terminal device can determine the format of the first indication information based on the available resources allocated by the network device. This can also be understood as follows: if the resource can carry the first indication information in the second format, the format of the first indication information is determined to be the second format, i.e., the first indication information in the second format is sent; otherwise, if the resource can carry the first indication information in the first format, the format of the first indication information is determined to be the first format, i.e., the first indication information in the first format is sent. Alternatively, it can be understood that when the resource can carry the first indication information in the second format, the format of the first indication information is determined to be the second format, i.e., the first indication information in the second format is sent; otherwise, the format of the first indication information is determined to be the first format, i.e., the first indication information in the first format is sent. In other words, if the resource can carry the first instruction information in the second format, the format of the first instruction information is determined to be the second format, i.e., the first instruction information in the second format is sent; if the resource cannot carry the first instruction information in the second format but can carry the first instruction information in the first format, the format of the first instruction information is determined to be the first format, i.e., the first instruction information in the first format is sent. As in the example above, if a larger resource is allocated, the terminal device can use that larger resource to send the first instruction information in the second format; if a smaller resource is allocated, the terminal device can use that smaller resource to send the first instruction information in the first format.
[0442] It should be understood that, under this implementation, the terminal device may or may not send the second instruction information.
[0443] Implementation method 4 can be used alone or in combination with implementation methods 1, 2, or 3. For example, when implementation method 4 is combined with implementation method 3, the terminal device can first send second instruction information to the network device. The network device can then allocate resources of an appropriate size to the terminal device based on the resources carrying the second instruction information or the content of the second instruction information. Subsequently, the terminal device can determine the format of the first instruction information based on the size of the resources allocated by the network device.
[0444] Regarding the allocation of resources for network devices to carry the first instruction information, please refer to Scheme 2 for further explanation.
[0445] The foregoing exemplifies several implementation methods for determining the format of the first indication information, but the embodiments of this application are not limited thereto. Any method that enables the terminal device to determine the format of the first indication information directly or indirectly based on the situation of the link-failed cell falls within the scope of the embodiments of this application. For example, the above implementation methods can be used individually or in combination.
[0446] Based on Scheme 1 above, the format of the first indication information can be determined based on the situation of the link-failed cells, thus allowing for the selection of a more suitable format and reducing resource waste. For example, the terminal device can send the first indication information in the appropriate format based on the payload of the link-failed cell information to be transmitted. Alternatively, the terminal device can send the first indication information in the appropriate format based on the number of link-failed cells. Or, the terminal device can send the first indication information in the appropriate format based on the payload of the link-failed cell information and data to be transmitted. Or, the terminal device can send the first indication information in the appropriate format based on the size of the resources used to carry the first indication information. Or, the terminal device can send the first indication information in the appropriate format based on the resources used to carry the second indication information. Or, the terminal device can send the first indication information in the appropriate format based on the second indication information. Or, the terminal device can send the first indication information in the appropriate format based on the size of the resources allocated by the network device. Or, the terminal device can send the first indication information in the appropriate format according to the format configured by the network device.
[0447] The above mainly introduced Scheme 1, including the format of the first instruction information and several ways to determine the format of the first instruction information. Scheme 2 will be introduced below.
[0448] Option 2: The resources carrying the first indication information are determined based on the situation of cells with link failures.
[0449] The resources carrying the first indication information are determined based on the situation of the link-failed cells. It can also be understood that the size of the resources carrying the first indication information is determined based on the situation of the link-failed cells.
[0450] Optionally, the network device can allocate resources carrying the first indication information to the terminal device based on the resources carrying the second indication information. Alternatively, it can be understood that the resources carrying the first indication information can be indicated or activated based on the response information of the second indication information. The response information of the second indication information can also be understood as the third indication information.
[0451] In one possible implementation, after receiving the second indication information, the network device can send a response to the second indication information. This response can indicate a first resource allocated to the terminal device, that is, the resource carrying the first indication information allocated by the network device to the terminal device. The resource carrying the first indication information can be aperiodic resources (or dynamic resources).
[0452] In this possible implementation, the network device can determine whether to allocate resources carrying the first indication information based on whether there are cells with link failures in the current network (indicated by the second indication information). If the network device receives the second indication information, it can know that there are cells with link failures in the current network, and the network device can dynamically allocate resources carrying the first indication information so that the terminal device can further report which cells have link failures, and / or report information on new links to restore the failed cells (reference signal information).
[0453] As mentioned earlier, the resources carrying the second indication information can be determined based on the situation of cells with failed links, and the resources carrying the first indication information can be determined by the second indication information. Therefore, it can be understood that the resources (or resource size) carrying the first indication information can also be indirectly determined based on the situation of cells with failed links. In other words, both the resources carrying the second indication information and the resources (or resource size) carrying the first indication information are determined based on the situation of cells with failed links.
[0454] For example, the resource carrying the first instruction information has a corresponding relationship with the resource carrying the second instruction information, which is referred to as the fourth correspondence for the purpose of distinction.
[0455] This can be understood as the network device allocating resources to the terminal device to carry the first instruction information based on the resources carrying the second instruction information and in conjunction with the fourth correspondence. This fourth correspondence can be pre-set, such as as specified in the network device configuration or protocol, or it can be pre-saved; there is no limitation on this.
[0456] Let's take the second resource #1 and the second resource #2 as examples for explanation.
[0457] For example, when the terminal device uses the second resource #1 to send the second instruction information, the network device allocates a smaller resource to the terminal device to carry the first instruction information; when the terminal device uses the second resource #2 to send the second instruction information, the network device allocates a larger resource to the terminal device to carry the first instruction information.
[0458] Since link failure events are sudden occurrences, this possible implementation eliminates the need to pre-allocate periodic resources for sending link failure recovery request information, effectively saving resource overhead. Furthermore, because link failure events are sudden and the number of cells experiencing link failures is uncertain, this possible implementation allows network devices to allocate an appropriate amount of resources to carry the initial indication information, effectively saving resource overhead and improving resource utilization.
[0459] In another possible implementation, the response information of the second instruction can also be used to activate the resource carrying the first instruction.
[0460] Network devices can pre-allocate resources carrying first indication information to terminal devices, which are then activated by a response to the second indication information. The activated resource carrying the first indication information can be a semi-persistent resource or a periodic resource.
[0461] For example, the resource carrying the first instruction information can be a semi-static resource or a static resource (e.g., PUSCH, PUCCH, or PRACH) activated by the response information of the second instruction information or by DCI after the second instruction information.
[0462] In this possible implementation, the network device determines whether to activate the resource carrying the first indication information based on whether there are cells with link failures in the current network (indicated by the second indication information). If the network device receives the second indication information, it can know that there are cells with link failures in the current network. The network device activates the resource carrying the first indication information so that the terminal device can further report which cells have experienced link failures, and / or report information on the new links to restore the cells with link failures (reference signal information).
[0463] Optionally, the resource carrying the first instruction information may be configured by higher-level signaling or system information, or may be a preset resource.
[0464] For example, the resource carrying the first instruction information may be configured by the network device for the terminal device and sent to the terminal device via higher-layer signaling or system information. The resource carrying the first instruction information may also be pre-agreed upon by the network device and the terminal device, or pre-set by the terminal device; this application does not limit this.
[0465] Optionally, the resource carrying the first instruction information can also be a resource associated with the resource carrying the second instruction information (the second resource). For distinction, this is referred to as the fifth correspondence. Taking the second resource #1 and the second resource #2 as examples, for instance, the second resource #1 is associated with the resource carrying the first instruction information with a smaller value; the second resource #2 is associated with the resource carrying the first instruction information with a larger value.
[0466] This can be understood as follows: when the terminal device learns about the resource carrying the second indication information, and combines this information with the fifth correspondence, it can determine the resource carrying the first indication information. This fifth correspondence can be pre-set, such as as specified in network device configuration or protocols, or it can be pre-saved; there is no limitation on this.
[0467] For example, the association between the resource carrying the second instruction information and the resource carrying the first instruction information can be configured by system information such as the master information block (MIB) or system information block (SIB), or it can be configured by RRC or MAC-CE signaling. This system information or signaling can be sent before sending the second instruction information.
[0468] For example, the configuration of the resource carrying the second instruction information and the resource carrying the first instruction information can also be configured through the aforementioned system information or signaling.
[0469] Optionally, the network device can configure multiple resources for transmitting second indication information and multiple resources for transmitting first indication information for the terminal device. The terminal device can select one or more of the multiple resources for transmitting the second indication information as resources to carry the second indication information, and can also select one or more of the multiple resources for transmitting the first indication information as resources to carry the first indication information. The multiple resources for transmitting the second indication information can be configured by system information such as MIB or SIB, or by signaling such as RRC or MAC-CE. The multiple resources for transmitting the first indication information can also be configured by system information such as MIB or SIB, or by signaling such as RRC or MAC-CE.
[0470] Optionally, the resource carrying the first indication information can also be a resource associated with the resource carrying the second indication information. Optionally, the network device can configure multiple resources for carrying the second indication information and multiple resources for carrying the first indication information, as well as the association relationships between these multiple resources for carrying the second indication information and the multiple resources for carrying the first indication information, through system information such as MIB or SIB, or through RRC or MAC-CE signaling. The terminal device can select one resource from the multiple resources for carrying the second indication information as the resource for carrying the second indication information, and it can also select one resource from the multiple resources for carrying the first indication information as the resource for carrying the first indication information. Each resource carrying the second indication information can be associated with one or more resources carrying the first indication information, and the resources associated with each resource carrying the second indication information can be of different sizes. The terminal device sends the second indication information on the resource carrying the second indication information that is associated with that resource carrying the second indication information, and the terminal device then sends the first indication information on the resource carrying the first indication information associated with that resource.
[0471] With this possible implementation, the first indication information can be sent directly on the resource carrying the first indication information instead of using the resources allocated through the response information of the second indication information. This can effectively reduce the link recovery latency and improve the link recovery speed.
[0472] Based on the above scheme 2, the resources carrying the first indication information can be determined based on the situation of the link failure cell, so that resources can be allocated reasonably and resource waste can be reduced.
[0473] It should be understood that Scheme 1 and Scheme 2 can be used individually or in combination.
[0474] Based on the embodiments of this application, the first indication information sent by the terminal device, i.e., the first indication information indicating information about a cell with a failed link, can be generated based on the situation of the cell with the failed link. For example, the format of the first indication information to be sent can be determined based on the situation of the cell with the failed link. That is, by designing a variable-length information format to indicate the cell information of the cell with the failed link, the terminal device can adaptively adjust the size or format of the first indication information it sends, effectively reducing the reporting of redundant information and reducing reporting overhead. Furthermore, determining the resources to carry the first indication information based on the situation of the cell with the failed link allows for the rational allocation of resources to carry the first indication information, reducing resource waste and improving resource utilization.
[0475] As described above, the first indication information and the second indication information in the embodiments of this application are both information sent by the terminal device to the network device to restore the cell with the failed link when a cell experiences a link failure. They can be collectively referred to as link failure recovery request information or beam failure recovery request information.
[0476] In this embodiment of the application, the beam failure recovery request information may only include the first indication information, or the beam failure request message may include both the first and second indication information. The terminal device may send the beam failure recovery request information in any of the following ways.
[0477] Method A
[0478] The beam failure recovery request information includes a first indication. This method allows the beam failure recovery request information to be reported in a single step.
[0479] In one possible implementation, the first indication information indicates: the identifier of the link-failed cell, and / or, reference signal information for restoring the link of the link-failed cell.
[0480] For example, the first indication information may indicate: the cell identifiers of N cells where the link has failed, and / or M reference signal information for restoring the link to the N cells. Where M and N are both integers greater than or equal to 1.
[0481] It should be understood that in this implementation, the first indication information may include: cell identification information of N cells with link failure, and / or M reference signal information for restoring the links of the N cells.
[0482] Optionally, this method A can be applied to the case where the first indication information is carried in the PUSCH, for example, when the first indication information is MAC-CE.
[0483] Method B:
[0484] The beam failure recovery request information includes a first indication and a second indication. This method allows for the reporting of beam failure recovery request information in two steps.
[0485] In one possible implementation, the second indication information indicates a cell link failure; the first indication information indicates: the identifier of the cell with the failed link, and / or, reference signal information for restoring the link of the cell with the failed link.
[0486] For example, the second indication information may indicate a cell link failure; the first indication information may indicate: the cell identifiers of N cells with link failure, and / or M reference signal information for restoring the links of the N cells; wherein M and N are both integers greater than or equal to 1.
[0487] For example, the second indication information may indicate: the link failure of at least one of the L cells, where L is an integer greater than 1; the first indication information indicates: the cell identifiers of N cells among the L cells, and / or, M reference signal information for restoring the links of the N cells; where M and N are both integers greater than or equal to 1.
[0488] It should be understood that in this implementation, the first indication information may include: cell identifiers of N cells out of L cells, and / or M reference signal information for restoring the links of the N cells.
[0489] Method C:
[0490] The beam failure recovery request information includes a first indication and a second indication. This method allows for the reporting of beam failure recovery request information in two steps.
[0491] In one possible implementation, the second indication information indicates the identifier of the cell with the failed link, and the first indication information indicates reference signal information for restoring the link of the cell with the failed link.
[0492] For example, the second indication information indicates the cell identifiers of N cells where the link has failed; the first indication information indicates M reference signal information for restoring the link of the N cells; wherein M and N are both integers greater than or equal to 1.
[0493] It should be understood that in this implementation, the first indication information may include the M reference signal information for restoring the links of N cells.
[0494] It should be understood that the second instruction information in methods B and C can also be called scheduling request information, or the second instruction information can adopt the same format as the scheduling request information.
[0495] Optionally, the resource carrying the second indication information in mode B and mode C can be a PRACH resource or a PUCCH resource.
[0496] Optionally, the resource carrying the first indication information in mode A, mode B, and mode C can be a PUSCH resource or a PUCCH resource.
[0497] Optionally, the reference signal resources in Mode A, Mode B, and Mode C can be CSI-RS resources or SSB resources.
[0498] It should be understood that in the embodiments of this application, "indicating cell link failure" can be understood as "indicating that at least one cell has experienced link failure", or it can be understood as "indicating that there are cells with link failure".
[0499] It should also be understood that in the embodiments of this application, "cell identifiers of N cells with failed links" and / or "M reference signal information for restoring the links of N cells with failed links" can be collectively referred to as "information of the cell with failed links". In other words, the information of the cell with failed links includes: the identifier of the cell with failed links, and / or, the reference signal information for restoring the links of the cell with failed links.
[0500] It should also be understood that, in the embodiments of this application, the relationship between N and M is not limited. There can be multiple correspondences between the N cells and M reference signal information reported in the link failure recovery request message. For example: one cell corresponds to one reference signal information; or one cell corresponds to zero reference signal information; or one cell corresponds to multiple reference signal information; or one reference signal information corresponds to multiple cells. This application does not limit this.
[0501] Figure 16 shows a specific example, and method 1600 may include the following steps.
[0502] 1610, The terminal device has determined that the link has failed.
[0503] In other words, the terminal device determines that at least one cell link has failed.
[0504] For example, a terminal device measures the reference signal resources for beam failure detection to determine if the link between the terminal device and the network device has failed.
[0505] Step 1610 is similar to step 510 in method 500. It will not be described again here.
[0506] 1620, the terminal device identifies the new link.
[0507] The terminal device measures reference signal resources and identifies reference signals used to restore the link between the terminal device and the network device.
[0508] For example, the terminal device determines the new identified beam whose channel quality is greater than or equal to the link failure recovery threshold based on the channel quality information (such as RSRP, CQI, BLER, SINR, SNR, etc.) of the candidate beam identification set (RS). This determination process can be achieved by measuring the channel quality information of the candidate beam identification set.
[0509] Optionally, method 1600 may also include step 1630.
[0510] At 16:30, the terminal device sends the second instruction information.
[0511] The second indication information can indicate a cell link failure.
[0512] This second indication information can also be called a second link failure recovery request information, a scheduling request information, or it can use the same format as the scheduling request information. It is merely a naming convention and does not limit the scope of protection provided in this application. The resource carrying the second indication information can be a PRACH resource or a PUCCH resource.
[0513] The second indication information can also indicate the status of the link-failed cells. For example, the second indication information can also indicate one or more of the following: the number of link-failed cells, the number of bits of information for the link-failed cells, the load, etc. It should be understood that the second indication information can only indicate a general range of the link-failed cell status, and cannot indicate the specific status (that is, the second indication information can only indicate a coarse-grained level of link-failed cell status). For example, the second indication information can indicate whether the current number of link-failed cells is one or more.
[0514] One possible implementation involves configuring two secondary resources, such as secondary resource #1 and secondary resource #2, which can be used to carry secondary indication information. The terminal device can select either secondary resource #1 or secondary resource #2 to send the secondary indication information based on the situation of the cell with the failed link.
[0515] Another possible implementation involves configuring a second resource in the network device to carry the second indication information. The terminal device can determine the second indication information (e.g., determine the value of the second indication information or which sequence the second indication information belongs to) based on the situation of the cell with the failed link.
[0516] For details regarding the second instruction information and the resources carrying the second instruction information, please refer to the description in method 500, which will not be repeated here.
[0517] It should be understood that the resource carrying the first instruction information may be indicated or activated based on the response information of the second instruction information.
[0518] In one possible implementation, after receiving the second indication information, the network device can send a response to the second indication information. The response to the second indication information (e.g., denoted as the third indication information) can indicate the first resource allocated to the terminal device, that is, the resource allocated by the network device to the terminal device to carry the first indication information.
[0519] In another possible implementation, the response information of the second indication information can also be used to activate the resource carrying the first indication information. The network device can pre-allocate the resource carrying the first indication information to the terminal device, and the activation is triggered by the response information of the second indication information.
[0520] For details, please refer to the description in Method 500 above, which will not be repeated here.
[0521] Optionally, method 1600 may also include step 1640.
[0522] 1640, the network device sends a third instruction message to the terminal device.
[0523] The third instruction information indicates the resource carrying the first instruction information. Alternatively, the third instruction information can be understood as a response to the second instruction information.
[0524] For example, the resource carrying the first instruction information may be a resource allocated by the network device to the terminal device based on the second instruction information. Alternatively, it can be understood as a dynamic resource.
[0525] For example, the network device may pre-allocate resources carrying first indication information to the terminal device, which are then activated by a response to the second indication information. The activated resource carrying the first indication information may be a semi-static resource or a static resource.
[0526] For details, please refer to the description of Scheme 2 in Method 500 above, which will not be repeated here.
[0527] At 1650, the terminal device sends the first instruction message.
[0528] The first indication information can indicate information about the cell where the link failure occurred. For example, the first indication information indicates the cell IDs of the T2 cells where the link failed, and / or the T4 reference signal information for restoring the link of the T2 cells.
[0529] For the first instruction information, please refer to the description in Method 500, which will not be repeated here.
[0530] The terminal device can send the first indication information based on a predetermined format. For example, the terminal device can send the first indication information in a corresponding format based on the payload of the cell information about the link failure to be transmitted. Alternatively, the terminal device can send the first indication information in a corresponding format based on the number of cells experiencing link failures. Or, the terminal device can send the first indication information in a corresponding format based on the payload of the cell information about the link failure to be transmitted and the data. Or, the terminal device can send the first indication information in a corresponding format based on the size of the resources used to carry the first indication information. Or, the terminal device can send the first indication information in a format configured by the network device.
[0531] The format of the first instruction message can be found in the description in Method 500, and will not be repeated here.
[0532] The resources used by the terminal device to send the first indication information can be determined based on sending the second indication information or based on the resources carrying the second indication information. Regarding the resources carrying the first indication information, please refer to the description in method 500, which will not be repeated here.
[0533] Alternatively, the terminal device may send the first instruction information on a certain PUSCH resource.
[0534] Step 1650 is similar to step 520 in method 500. It will not be described again here.
[0535] Optionally, method 1600 may also include step 1660.
[0536] 1660, The network device sends a link restoration response message to the terminal device.
[0537] It should be understood that the information involved in method 1600, such as the first instruction information and the second instruction information, can be referred to the description in method 500, and will not be repeated here.
[0538] It should also be understood that in the embodiments of this application, "first instruction information" can be replaced with "MAC-CE".
[0539] It should also be understood that in the embodiments of this application, "cell" can be understood as "serving cell" or "carrier".
[0540] Optionally, the cell includes at least one of a downlink carrier, an uplink (UL) carrier, and a supplementary uplink (SUL) carrier. Specifically, the cell may include a downlink carrier and an uplink carrier; or the cell may include a downlink carrier and a supplementary uplink carrier; or the cell may include a downlink carrier, an uplink carrier, and a supplementary uplink carrier.
[0541] Optionally, the uplink supplementary carrier has a lower carrier frequency than the uplink carrier in order to improve uplink coverage.
[0542] Optionally, in general, in an FDD system, the uplink carrier and the downlink carrier have different carrier frequencies; in a TDD system, the uplink carrier and the downlink carrier have the same carrier frequency.
[0543] It should also be understood that, in the embodiments of this application, uplink resources are on the uplink carrier; downlink resources are on the downlink carrier.
[0544] It should also be understood that in the embodiments of this application, the uplink carrier can be a normal uplink carrier or a supplementary uplink (SUL) carrier.
[0545] It should also be understood that "detection" in the embodiments of this application can be understood as "receiving" or "decoding".
[0546] It should also be understood that in the embodiments of this application, the time unit may be one or more radio frames, one or more subframes, one or more time slots, one or more mini slots, one or more orthogonal frequency division multiplexing (OFDM) symbols, etc., as defined in the LTE or 5G NR system, or it may be a time window composed of multiple frames or subframes, such as a system information (SI) window.
[0547] It should also be understood that in the embodiments of this application, "cell identifier" can also be replaced with "cell index".
[0548] It should also be understood that in the embodiments of this application, "when..." does not necessarily mean that they occur simultaneously. Unless otherwise specified, it means "under the condition of...". For example, "when B field is 1" means that it occurs when B field is 1. Similarly, both the first indication information and the second indication information are information sent by the terminal device to the network device to recover the failed cell when a cell experiences a link failure. This indicates that both the first indication information and the second indication information are information sent by the terminal device to the network device to recover the failed cell when a cell experiences a link failure. It does not mean that the terminal device sends information to the network device to recover the failed cell at the same time as the cell experiences a link failure.
[0549] It should also be understood that in the embodiments of this application, "the second resource and the third resource can be resources of the primary cell or the auxiliary primary cell, and can also be resources configured by the network device for the terminal device to recover from a link failure cell (or resources configured by the network device for the terminal device to recover from a link failure secondary cell). The cell for which the "first resource" belongs can depend on the scheduling of the network device or the instruction of the network device. The "first resource" and the "second resource and third resource" can be resources of the same cell or resources of different cells. The "first instruction information" and the "second instruction information" can be instruction information used to recover from link failures in secondary cells and / or special cells.
[0550] Based on the above technical solution, the first indication information sent by the terminal device, i.e., the information indicating a cell with a failed link, can be generated based on the situation of the cell with the failed link. For example, the format of the first indication information to be sent can be determined based on the situation of the cell with the failed link. That is, by designing a variable-length information format to indicate the cell information with a failed link, the terminal device can adaptively adjust the size or format of the first indication information it sends, effectively reducing the reporting of redundant information and lowering reporting overhead. Furthermore, determining the resources to carry the first indication information based on the situation of the cell with the failed link allows for the rational allocation of resources to carry the first indication information, reducing resource waste and improving resource utilization.
[0551] The various embodiments described herein can be independent solutions or combinations thereof based on their inherent logic, and all such solutions fall within the protection scope of this application.
[0552] It is understood that, in the above-described method embodiments, the methods and operations implemented by the terminal device can also be implemented by components (such as chips or circuits) that can be used in the terminal device, and the methods and operations implemented by the network device can also be implemented by components (such as chips or circuits) that can be used in the network device.
[0553] The methods provided by the embodiments of this application have been described in detail above with reference to Figures 5 to 16. The communication apparatus provided by the embodiments of this application will be described in detail below with reference to Figures 17 to 20. It should be understood that the descriptions of the apparatus embodiments correspond to the descriptions of the method embodiments; therefore, any content not described in detail can be referred to the method embodiments above, and for the sake of brevity, will not be repeated here.
[0554] The above mainly describes the solution provided by the embodiments of this application from the perspective of interaction between various network elements. It is understood that each network element, such as a transmitting or receiving device, includes corresponding hardware structures and / or software modules to perform the above functions. Those skilled in the art should recognize that, based on the units and algorithm steps of the examples described in conjunction with the embodiments disclosed herein, this application can be implemented in hardware or a combination of hardware and computer software. Whether a function is executed by hardware or by computer software driving hardware depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.
[0555] This application embodiment can divide the transmitting or receiving device into functional modules according to the above method examples. For example, each function can be divided into its own functional modules, or two or more functions can be integrated into one processing module. The integrated module can be implemented in hardware or as a software functional module. It should be noted that the module division in this application embodiment is illustrative and only represents one logical functional division. In actual implementation, there may be other division methods. The following description uses the division of functional modules according to each function as an example.
[0556] Figure 17 is a schematic block diagram of a communication device provided in an embodiment of this application. As shown, the communication device 1700 may include a communication unit 1710 and a processing unit 1720. The communication unit 1710 can communicate with the outside, and the processing unit 1720 is used for data processing. The communication unit 1710 may also be referred to as a communication interface or a transceiver unit. The communication interface is used for inputting and / or outputting information, which includes at least one of instructions and data. Optionally, the communication device may be a chip or a chip system. When the communication device is a chip or a chip system, the communication interface may be an input / output interface, which may be an input / output interface, interface circuit, output circuit, input circuit, pin, or related circuit on the chip or chip system. The processor may also be a processing circuit or a logic circuit.
[0557] In one possible design, the communication device 1700 can implement the steps or processes corresponding to those executed by the terminal device in the above method embodiments. For example, it can be a terminal device, or a chip, circuit, or chip system configured in the terminal device. In this case, the communication device 1700 can be referred to as a terminal device. The communication unit 1710 is used to perform the transmit / receive related operations on the terminal device side in the above method embodiments, and the processing unit 1720 is used to perform the processing related operations of the terminal device in the above method embodiments.
[0558] In one possible implementation, the processing unit 1720 is configured to: determine that at least one cell has a link failure; and the communication unit 1710 is configured to: send first indication information indicating information about the cell with the link failure, wherein the first indication information is determined based on the situation of the cell with the link failure.
[0559] Optionally, before sending the first indication information, the communication unit 1710 is further configured to: send a second indication information on the corresponding second resource according to the situation of the cell with a failed link, wherein the second indication information indicates that the cell link has failed.
[0560] Optionally, the second instruction information is used to request the first resource carrying the first instruction information.
[0561] Optionally, the communication unit 1710 is specifically configured to: send second indication information on a third resource, where the second indication information is used to request a first resource carrying first indication information.
[0562] Optionally, the communication unit 1710 is further configured to: receive third indication information, where the third indication information indicates a first resource carrying first indication information.
[0563] Optionally, the first resource carries first indication information in a corresponding format.
[0564] Optionally, the first indication information is determined based on the situation of a link failure cell, including: the format of the first indication information is determined based on the situation of the link failure cell; and / or, the resource carrying the first indication information is determined based on the situation of the link failure cell.
[0565] Optionally, the format of the first indication information is a first format or a second format, where the first format and the second format satisfy one or more of the following: the number of bits occupied by the first indication information in the first format is less than the number of bits occupied by the first indication information in the second format; the first indication information in the first format indicates information of N1 link failure cells, and the first indication information in the second format indicates information of N2 link failure cells, where N1 and N2 are integers greater than or equal to 1, and N1 < N2; or, the payload of the information included in the first indication information in the first format is less than the payload of the information included in the first indication information in the second format.
[0566] Optionally, the format of the first indication information is a first format, and the first indication information in the first format includes one or more of the following information: a serving cell identification field, a first field, or a second field; where the serving cell identification field indicates the identification of the link failure cell through a status value, the first field indicates whether there is a corresponding second field for the link failure cell indicated by the serving cell identification field, and the second field indicates reference signal information for restoring the link of the link failure cell indicated by the serving cell identification field.
[0567] Optionally, the format of the first indication information is a second format, and the first indication information in the second format includes one or more of the following information: a serving cell identification field, a first field, or a second field; where the serving cell identification field indicates the identification of the link failure cell through a bitmap, the first field indicates whether there is a corresponding second field for the link failure cell indicated by the serving cell identification field, and the second field indicates reference signal information for restoring the link of the link failure cell indicated by the serving cell identification field.
[0568] Optionally, when the situation of the link failure cell meets a preset condition, the first indication information indicates the identifier of the link failure cell in the form of a status value; and / or, when the situation of the link failure cell does not meet the preset condition, the first indication information indicates the identifier of the link failure cell in the form of a bitmap.
[0569] Optionally, the preset condition includes: the number of link failure cells is less than or equal to a preset first threshold, or the payload of the information of the link failure cells is less than or equal to a preset second threshold.
[0570] Optionally, the situation of the link failure cells includes: the number of link failure cells and / or the payload of the information of the link failure cells.
[0571] Another possible implementation manner, the processing unit 1720 is configured to: determine the link failure of at least one cell; the processing unit 1720 is further configured to: determine the format of the first indication information according to the situation of the link failure cells, and the first indication information indicates the information of the link failure cells; the communication unit 1710 is configured to: send the first indication information.
[0572] Optionally, the first resource bearer corresponds to the first indication information in a corresponding format.
[0573] Optionally, the format of the first indication information is the first format or the second format, where the first format and the second format satisfy one or more of the following: the number of bits occupied by the first indication information in the first format is less than the number of bits occupied by the first indication information in the second format; the first indication information in the first format indicates the information of N1 link failure cells, and the first indication information in the second format indicates the information of N2 link failure cells, where N1 and N2 are integers greater than or equal to 1, and N1 < N2; or, the information payload included in the first indication information in the first format is less than the information payload included in the first indication information in the second format.
[0574] Optionally, the format of the first indication information is the first format, and the first indication information in the first format includes one or more of the following information: a serving cell identifier field, a first field, or a second field; where the serving cell identifier field indicates the identifier of the link failure cell by a status value, the first field indicates whether there is a corresponding second field for the link failure cell indicated by the serving cell identifier field, and the second field indicates the reference signal information for restoring the link of the link failure cell indicated by the serving cell identifier field.
[0575] Optionally, the format of the first indication information is a second format, and the first indication information in the second format includes one or more of the following information: serving cell identifier field, first field, or second field; wherein, the serving cell identifier field indicates the identifier of the link-failed cell through a bitmap, the first field indicates whether there is a corresponding second field for the link-failed cell indicated by the serving cell identifier field, and the second field indicates reference signal information for restoring the link of the link-failed cell indicated by the serving cell identifier field.
[0576] Optionally, if the conditions for a link failure cell are met, the first indication information indicates the identifier of the link failure cell through a status value; and / or, if the conditions for a link failure cell are not met, the first indication information indicates the identifier of the link failure cell through a bitmap.
[0577] Optionally, the preset conditions include: the number of links-failed cells is less than or equal to a preset first threshold, or the payload of information about links-failed cells is less than or equal to a preset second threshold.
[0578] Optionally, the information regarding link-failed cells includes: the number of link-failed cells and / or the payload of information about the link-failed cells.
[0579] The communication device 1700 can implement the steps or processes executed by the terminal device corresponding to methods 500 and 1600 according to the embodiments of this application. The communication device 1700 may include units for executing the methods executed by the terminal device in method 500 of FIG. 5 and method 1600 of FIG. 16. Furthermore, each unit in the communication device 1700 and the other operations and / or functions described above are respectively for implementing the corresponding processes of method 500 of FIG. 5 and method 1600 of FIG. 16.
[0580] When the communication device 1700 is used to execute the method 500 in FIG5, the communication unit 1710 can be used to execute step 520 in the method 500, and the processing unit 1720 can be used to execute step 510 in the method 500.
[0581] When the communication device 1700 is used to execute the method 1600 in FIG16, the communication unit 1710 can be used to execute steps 1630, 1640, 1650 and 1660 in the method 1600, and the processing unit 1720 can be used to execute steps 1610 and 1620 in the method 1600.
[0582] It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.
[0583] It should also be understood that the communication unit 1710 in the communication device 1700 can be implemented by the transceiver 1910 in the terminal device 1900 shown in FIG. 19, and the processing unit 1720 in the communication device 1700 can be implemented by the processor 1920 in the terminal device 1900 shown in FIG. 19. The transceiver may include a transmitter and / or a receiver, respectively implementing the functions of the transmitting unit and the receiving unit.
[0584] It should also be understood that the communication unit 1710 in the communication device 1700 can also be an input / output interface.
[0585] In another possible design, the communication device 1700 can implement the steps or processes corresponding to those executed by the network device in the above method embodiments. For example, it can be a network device, or a chip, circuit, or chip system configured in a network device. In this case, the communication device 1700 can be referred to as a network device. The communication unit 1710 is used to perform the transmit / receive related operations on the network device side in the above method embodiments, and the processing unit 1720 is used to perform the processing related operations of the network device in the above method embodiments.
[0586] In one possible implementation, the communication unit 1710 is configured to: receive first indication information, the first indication information indicating information about a cell with a failed link, the format of the first indication information being determined based on the situation of the cell with a failed link; and the processing unit 1720 is configured to: restore the link of the cell with a failed link based on the first indication information.
[0587] Optionally, before receiving the first indication information, the communication unit 1710 is configured to: receive second indication information, wherein the second resource carrying the second indication information or the second indication information is determined based on the situation of the cell with a failed link, and the second indication information indicates that the cell link has failed; the processing unit 1720 is configured to: determine the first resource carrying the first indication information based on the second resource carrying the second indication information or the second indication information.
[0588] Optionally, the communication unit 1710 is further configured to: send third indication information, the third indication information indicating a first resource carrying the first indication information.
[0589] Optionally, the first resource carries first instruction information in a corresponding format.
[0590] Optionally, the first indication information is determined based on the situation of the link-failed cell, including: the format of the first indication information is determined based on the situation of the link-failed cell; and / or, the resources carrying the first indication information are determined based on the situation of the link-failed cell.
[0591] Optionally, the format of the first indication information is the first format or the second format, where the first format and the second format satisfy one or more of the following: the number of bits occupied by the first indication information in the first format is less than the number of bits occupied by the first indication information in the second format; the first indication information in the first format indicates information of N1 link failure cells, and the first indication information in the second format indicates information of N2 link failure cells, where N1 and N2 are integers greater than or equal to 1, and N1 < N2; or, the payload of the information included in the first indication information in the first format is less than the payload of the information included in the first indication information in the second format.
[0592] Optionally, the format of the first indication information is the first format, and the first indication information in the first format includes one or more of the following information: a serving cell identification field, a first field, or a second field; where the serving cell identification field indicates the identification of the link failure cell through a status value, the first field indicates whether there is a corresponding second field for the link failure cell indicated by the serving cell identification field, and the second field indicates reference signal information for restoring the link of the link failure cell indicated by the serving cell identification field.
[0593] Optionally, the format of the first indication information is the second format, and the first indication information in the second format includes one or more of the following information: a serving cell identification field, a first field, or a second field; where the serving cell identification field indicates the identification of the link failure cell through a bitmap, the first field indicates whether there is a corresponding second field for the link failure cell indicated by the serving cell identification field, and the second field indicates reference signal information for restoring the link of the link failure cell indicated by the serving cell identification field.
[0594] Optionally, when the situation of the link failure cell meets a preset condition, the first indication information indicates the identification of the link failure cell in the form of a status value; and / or, when the situation of the link failure cell does not meet the preset condition, the first indication information indicates the identification of the link failure cell in the form of a bit bitmap.
[0595] Optionally, the preset condition includes: the number of link failure cells is less than or equal to a preset first threshold, or the payload of the information of the link failure cell is less than or equal to a preset second threshold.
[0596] Optionally, the situation of the link failure cell includes: the number of link failure cells and / or the payload of the information of the link failure cell.
[0597] The communication device 1700 can implement the steps or processes executed by the network device corresponding to methods 500 and 1600 according to the embodiments of this application. The communication device 1700 may include units for executing the methods executed by the network device in method 500 of FIG. 5 and method 1600 of FIG. 16. Furthermore, each unit in the communication device 1700 and the other operations and / or functions described above are respectively for implementing the corresponding processes of method 500 of FIG. 5 and method 1600 of FIG. 16.
[0598] When the communication device 1700 is used to execute the method 500 in FIG5, the communication unit 1710 can be used to execute step 520 in the method 500, and the processing unit 1720 can be used to execute step 530 in the method 500.
[0599] When the communication device 1700 is used to execute the method 1600 in FIG16, the communication unit 1710 can be used to execute steps 1630, 1640, 1650 and 1660 in the method 1600.
[0600] It should be understood that the specific process of each unit performing the above-mentioned corresponding steps has been described in detail in the above method embodiments, and will not be repeated here for the sake of brevity.
[0601] It should also be understood that the communication unit in the communication device 1700 can be implemented by the transceiver 2010 in the network device 1900 shown in FIG20, and the processing unit 1720 in the communication device 1700 can be implemented by the processor 2020 in the network device 1900 shown in FIG20.
[0602] It should also be understood that the communication unit 1710 in the communication device 1700 can also be an input / output interface. The transceiver may include a transmitter and / or a receiver, respectively implementing the functions of the transmitting unit and the receiving unit.
[0603] Figure 18 is another schematic block diagram of the communication device 1800 provided in an embodiment of this application. As shown in the figure, the communication device 1800 includes a transceiver 1810, a processor 1820, and a memory 1830. The memory 1830 stores a program, and the processor 1820 is used to execute the program stored in the memory 1830. The execution of the program stored in the memory 1830 causes the processor 1820 to perform the relevant processing steps in the method embodiments described above. The execution of the program stored in the memory 1830 causes the processor 1820 to control the transceiver 1810 to perform the transmission and reception related steps in the method embodiments described above.
[0604] As one implementation, the communication device 1800 is used to perform the actions performed by the terminal device in the above method embodiment. At this time, the execution of the program stored in the memory 1830 causes the processor 1820 to perform the processing steps on the terminal device side in the above method embodiment. The execution of the program stored in the memory 1830 causes the processor 1820 to control the transceiver 1810 to perform the receiving and sending steps on the terminal device side in the above method embodiment.
[0605] As another implementation, the communication device 1800 is used to perform the actions performed by the network device in the above method embodiment. In this case, the execution of the program stored in the memory 1830 causes the processor 1820 to perform the processing steps on the network device side in the above method embodiment. The execution of the program stored in the memory 1830 causes the processor 1820 to control the transceiver 1810 to perform the receiving and sending steps on the network device side in the above method embodiment.
[0606] This application also provides a communication device 1900, which can be a terminal device or a chip. The communication device 1900 can be used to perform the actions performed by the terminal device in the above method embodiments.
[0607] When the communication device 1900 is a terminal device, Figure 19 shows a simplified structural diagram of the terminal device. For ease of understanding and illustration, a mobile phone is used as an example of a terminal device in Figure 19. As shown in Figure 19, the terminal device includes a processor, memory, radio frequency circuitry, antenna, and input / output devices. The processor is mainly used to process communication protocols and communication data, control the terminal device, execute software programs, and process data from the software programs. The memory is mainly used to store software programs and data. The radio frequency circuitry is mainly used for the conversion between baseband signals and radio frequency signals, and for processing radio frequency signals. The antenna is mainly used for transmitting and receiving radio frequency signals in the form of electromagnetic waves. Input / output devices, such as touchscreens, displays, and keyboards, are mainly used to receive user input data and output data to the user. It should be noted that some types of terminal devices may not have input / output devices.
[0608] When data needs to be sent, the processor performs baseband processing on the data to be sent and outputs a baseband signal to the radio frequency (RF) circuit. The RF circuit then processes the baseband signal and transmits it outward as an electromagnetic wave through the antenna. When data is sent to the terminal device, the RF circuit receives the RF signal through the antenna, converts it into a baseband signal, and outputs the baseband signal to the processor. The processor converts the baseband signal back into data and processes it. For ease of explanation, Figure 19 only shows one memory and one processor. In actual terminal device products, there may be one or more processors and one or more memories. The memory can also be called a storage medium or storage device, etc. The memory can be set up independently of the processor or integrated with the processor; this application embodiment does not limit this.
[0609] In the embodiments of this application, the antenna and radio frequency circuit with transceiver function can be regarded as the transceiver unit of the terminal device, and the processor with processing function can be regarded as the processing unit of the terminal device.
[0610] As shown in Figure 19, the terminal device includes a transceiver unit 1910 and a processing unit 1920. The transceiver unit 1910 can also be referred to as a transceiver, transceiver machine, or transceiver device. The processing unit 1920 can also be referred to as a processor, processing board, processing module, or processing device. Optionally, the device in the transceiver unit 1910 used to implement the receiving function can be considered as a receiving unit, and the device in the transceiver unit 1910 used to implement the transmitting function can be considered as a transmitting unit; that is, the transceiver unit 1910 includes both a receiving unit and a transmitting unit. The transceiver unit can sometimes also be referred to as a transceiver, transceiver circuit, or transceiver device. The receiving unit can sometimes be referred to as a receiver, receiver, or receiving circuit. The transmitting unit can sometimes be referred to as a transmitter, transmitter, or transmitting circuit.
[0611] For example, in one implementation, processing unit 1920 is used to execute step 510 in FIG. 5 and steps 1610 and 1620 in FIG. 16, and / or, processing unit 1920 is also used to execute other processing steps on the terminal device side in this embodiment of the application. Transceiver unit 1910 is also used to execute step 520 shown in FIG. 5 and steps 1630, 1640, 1650, and 1660 in FIG. 16, and / or transceiver unit 1910 is also used to execute other transceiver steps on the terminal device side.
[0612] It should be understood that Figure 19 is merely an example and not a limitation, and the terminal device described above, including the transceiver unit and the processing unit, may not depend on the structure shown in Figure 19.
[0613] When the communication device 1900 is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit can be an input / output circuit or a communication interface; the processing unit can be a processor, microprocessor, or integrated circuit integrated on the chip.
[0614] This application also provides a communication device 1900, which can be a network device or a chip. The communication device 1900 can be used to perform the actions performed by the network device in the above method embodiments.
[0615] When the communication device 1900 is a network device, such as a base station, Figure 20 shows a simplified schematic diagram of a base station structure. The base station includes a 2010 section and a 2020 section. The 2010 section is mainly used for transmitting and receiving radio frequency signals and converting radio frequency signals to baseband signals; the 2020 section is mainly used for baseband processing and controlling the base station. The 2010 section can generally be referred to as a transceiver unit, transceiver, transceiver circuit, or transceiver, etc. The 2020 section is usually the control center of the base station, and can generally be referred to as a processing unit, used to control the base station to perform the processing operations on the network device side in the above method embodiments.
[0616] The transceiver unit in Part 2010, also known as a transceiver or transceiver unit, includes an antenna and a radio frequency (RF) unit, where the RF unit is primarily used for RF processing. Optionally, the devices in Part 2010 that implement the receiving function can be considered as receiving units, and the devices that implement the transmitting function can be considered as transmitting units; that is, Part 2010 includes both receiving and transmitting units. The receiving unit can also be called a receiver, receiver circuit, etc., and the transmitting unit can be called a transmitter, transmitter, or transmitting circuit, etc.
[0617] The 2020 component may include one or more single boards, each of which may include one or more processors and one or more memories. The processors are used to read and execute programs in the memories to implement baseband processing functions and control the base station. If multiple single boards exist, they can be interconnected to enhance processing capabilities. As an optional implementation, multiple single boards may share one or more processors, multiple single boards may share one or more memories, or multiple single boards may simultaneously share one or more processors.
[0618] For example, in one implementation, the transceiver unit in section 2010 is used to execute step 510 in FIG. 5 and steps 1610 and 1620 in FIG. 16, and / or the transceiver unit in section 2010 is also used to execute other transceiver steps on the network device side in this embodiment. The processing unit in section 2020 is used to execute step 530 in FIG. 5, and / or the processing unit in section 2020 is also used to execute processing steps on the network device side in this embodiment.
[0619] It should be understood that Figure 20 is merely an example and not a limitation, and the network device described above, including the transceiver unit and the processing unit, may not depend on the structure shown in Figure 20.
[0620] When the communication device 1900 is a chip, the chip includes a transceiver unit and a processing unit. The transceiver unit can be an input / output circuit or a communication interface; the processing unit is a processor, microprocessor, or integrated circuit integrated on the chip.
[0621] In addition, the network equipment is not limited to the above-mentioned form, and may also be in other forms: for example, it may include AAU, CU nodes and / or DU nodes, or BBU and adaptive radio unit (ARU), or BBU and AAU; it may also be customer premises equipment (CPE), or other forms, which are not limited in this application.
[0622] The aforementioned CU and / or DU can be used to perform the actions implemented internally by the network device as described in the preceding method embodiments, while the AAU can be used to perform the actions described in the preceding method embodiments whereby the network device sends data to or receives data from the terminal device. Please refer to the descriptions in the preceding method embodiments for details, which will not be repeated here.
[0623] This application also provides a processing apparatus, including a processor and an interface. The processor can be used to execute the methods described in the above method embodiments.
[0624] It should be understood that the aforementioned processing device can be a chip. For example, the processing device can be a field-programmable gate array (FPGA), an application-specific integrated circuit (ASIC), a system-on-chip (SoC), a central processor unit (CPU), a network processor (NP), a digital signal processor (DSP), a microcontroller unit (MCU), a programmable logic device (PLD), or other integrated chips.
[0625] In implementation, each step of the above method can be completed by integrated logic circuits in the processor's hardware or by instructions in software. The steps of the method disclosed in the embodiments of this application can be directly implemented by a hardware processor, or by a combination of hardware and software modules in the processor. The software modules can reside in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads information from the memory and, in conjunction with its hardware, completes the steps of the above method. To avoid repetition, detailed descriptions are omitted here.
[0626] It should be noted that the processor in the embodiments of this application can be an integrated circuit chip with signal processing capabilities. During implementation, each step of the above method embodiments can be completed by the integrated logic circuitry in the processor's hardware or by instructions in software form. The processor can be a general-purpose processor, a digital signal processor (DSP), an application-specific integrated circuit (ASIC), a field-programmable gate array (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, or discrete hardware components. It can implement or execute the methods, steps, and logic block diagrams disclosed in the embodiments of this application. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the methods disclosed in the embodiments of this application can be directly embodied as being executed by a hardware decoding processor, or executed by a combination of hardware and software modules in the decoding processor. The software modules can be located in random access memory, flash memory, read-only memory, programmable read-only memory, electrically erasable programmable memory, registers, or other mature storage media in the art. This storage medium is located in memory, and the processor reads the information in the memory and, in conjunction with its hardware, completes the steps of the above methods.
[0627] It is understood that the memory in the embodiments of this application can be volatile memory or non-volatile memory, or may include both volatile and non-volatile memory. Non-volatile memory can be read-only memory (ROM), programmable read-only memory (PROM), erasable programmable read-only memory (EPROM), electrically erasable programmable read-only memory (EEPROM), or flash memory. Volatile memory can be random access memory (RAM), which is used as an external cache. By way of example, but not limitation, many forms of RAM are available, such as static random access memory (SRAM), dynamic random access memory (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDR SDRAM), enhanced synchronous dynamic random access memory (ESDRAM), and synchronous linked dynamic random access memory (SDRAM).
[0628] SLDRAM and direct rambus RAM (DR RAM). It should be noted that the memory used in the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.
[0629] According to the method provided in the embodiments of this application, this application also provides a computer program product, which includes: computer program code, which, when run on a computer, causes the computer to execute the method of any one of the embodiments shown in FIG5 to FIG16.
[0630] According to the method provided in the embodiments of this application, this application also provides a computer-readable medium storing program code that, when run on a computer, causes the computer to perform the method of any one of the embodiments shown in FIG5 to FIG16.
[0631] According to the method provided in the embodiments of this application, this application also provides a system, which includes one or more terminal devices and one or more network devices as described above.
[0632] In the above embodiments, implementation can be achieved, in whole or in part, through software, hardware, firmware, or any combination thereof. When implemented in software, it can be implemented, in whole or in part, as a computer program product. The computer program product includes one or more computer instructions. When the computer instructions are loaded and executed on a computer, all or part of the processes or functions described in the embodiments of this application are generated. The computer can be a general-purpose computer, a special-purpose computer, a computer network, or other programmable device. The computer instructions can be stored in a computer-readable storage medium or transmitted from one computer-readable storage medium to another. For example, the computer instructions can be transmitted from one website, computer, server, or data center to another via wired (e.g., coaxial cable, fiber optic, digital subscriber line (DSL)) or wireless (e.g., infrared, wireless, microwave, etc.) means. The computer-readable storage medium can be any available medium accessible to a computer or a data storage device such as a server or data center that integrates one or more available media. The available media may be magnetic media (e.g., floppy disks, hard disks, magnetic tapes), optical media (e.g., high-density digital video discs (DVDs)), or semiconductor media (e.g., solid-state disks (SSDs)).
[0633] In the above-described device embodiments, the network devices and terminal devices in the method embodiments correspond to each other, and the corresponding modules or units execute the corresponding steps. For example, the communication unit (transceiver) executes the receiving or sending steps in the method embodiments, while other steps besides sending and receiving can be executed by the processing unit (processor). The functions of specific units can be found in the corresponding method embodiments. There can be one or more processors.
[0634] The terms “component,” “module,” “system,” etc., used in this specification are used to refer to computer-related entities, hardware, firmware, combinations of hardware and software, software, or software in execution. For example, a component can be, but is not limited to, a process running on a processor, a processor, an object, an executable file, an execution thread, a program, and / or a computer. As illustrated, applications running on computing devices and computing devices can both be components. One or more components may reside in a process and / or an execution thread, and components may be located on a single computer and / or distributed among two or more computers. Furthermore, these components can be executed from various computer-readable media on which various data structures are stored. Components can communicate, for example, via local and / or remote processes based on signals having one or more data packets (e.g., data from two components interacting with another component between a local system, a distributed system, and / or a network, such as the Internet interacting with other systems via signals).
[0635] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.
[0636] Those skilled in the art will understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.
[0637] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be through some interfaces; the indirect coupling or communication connection between apparatuses or units may be electrical, mechanical, or other forms.
[0638] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0639] In addition, 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.
[0640] If the aforementioned functions are implemented as software functional units and sold or used as independent products, they 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 a portion 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.) 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.
[0641] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.
Claims
1. A communication method, It is characterized in that include: Determining a link failure of at least one cell; sending first indication information, where the first indication information indicates information of a link failure cell, The first indication information is determined based on the situation of the link failure cell.
2. The communication method according to claim 1, It is characterized in that Before sending the first indication information, the communication method further includes: According to the situation of the cell with link failure, second indication information is sent on the corresponding second resource, and the second indication information indicates that the cell link has failed.
3. The communication method according to claim 2, It is characterized in that The second indication information is used to request a first resource that carries the first indication information.
4. The communication method according to claim 1, It is characterized in that The communication method further comprises: Second indication information is sent on a third resource, where the second indication information is used to request a first resource that carries the first indication information.
5. The communication method according to any one of claims 2 to 4, It is characterized in that Before sending the first indication information, the communication method further includes: Third indication information is received, where the third indication information indicates a first resource that carries the first indication information.
6. The communication method according to any one of claims 1 to 5, It is characterized in that The first resource carries the first indication information in a corresponding format.
7. The communication method according to any one of claims 1 to 6, It is characterized in that The first indication information is determined based on the situation of the link failure cell, and includes: The format of the first indication information is determined based on the situation of the link failure cell; and / or, the resources carrying the first indication information are determined based on the situation of the link failure cell.
8. The communication method according to claim 7, It is characterized in that The format of the first indication information is determined based on the situation of the link failure cell, including: The format of the first indication information is determined according to the size of resources allocated by the network device.
9. The communication method according to claim 8, It is characterized in that The format of the first indication information is determined according to the size of resources allocated by the network device, and includes: If the resources allocated by the network device can carry the first indication information in the second format, the format of the first indication information is the second format; otherwise, if the resources allocated by the network device can carry the first indication information in the first format, the format of the first indication information is the first format.
10. The communication method according to any one of claims 1 to 9, It is characterized in that The format of the first indication information is the first format or the second format, The first format and the second format satisfy one or more of the following: The number of bits occupied by the first indication information in the first format is smaller than the number of bits occupied by the first indication information in the second format; The first indication information in the first format indicates information of N1 link failure cells, and the first indication information in the second format indicates information of N2 link failure cells, wherein N1 and N2 are integers greater than 1 or equal to 1, and N1 <N2; The payload of information included in the first indication information in the first format is smaller than the payload of information included in the first indication information in the second format.
11. The communication method according to claim 10, It is characterized in that The first format and the second format satisfy one or more of the following: The maximum number of bits occupied by the first indication information in the first format is less than the maximum number of bits occupied by the first indication information in the second format; The first indication information in the first format indicates information of the N1 link failure cells at most, and the first indication information in the second format indicates information of the N2 link failure cells at most; The maximum value of the load of information included in the first indication information in the first format is smaller than the maximum value of the load of information included in the first indication information in the second format.
12. The communication method according to claim 10 or 11, It is characterized in that The format of the first indication information is the first format, and the first indication information in the first format includes one or more of the following information: A serving cell identification field, a first field, or a second field; The serving cell identification field indicates the identification of the link failure cell through a status value. The first domain indicates whether there is a corresponding second domain for the link failure cell indicated by the serving cell identification domain, The second field indicates reference signal information used to recover the link of the cell with link failure indicated by the serving cell identification field.
13. The communication method according to claim 10 or 11, It is characterized in that The format of the first indication information is a second format, and the first indication information in the second format includes one or more of the following information: A serving cell identification field, a first field, or a second field; The serving cell identification field indicates the identification of the link failure cell through a bitmap. The first domain indicates whether there is a corresponding second domain for the link failure cell indicated by the serving cell identification domain, The second field indicates reference signal information used to recover the link of the cell with link failure indicated by the serving cell identification field.
14. The communication method according to claim 13, It is characterized in that The first indication information in the second format includes: X Ci fields, b first fields, m second fields, and the serving cell identification field includes the X Ci fields; Among the X Ci domains, there are b Ci domains with a value of 1, and the b Ci domains with a value of 1 correspond one-to-one to the b first domains. There are m first domains with a value of 1 among the b first domains, and the m first domains with a value of 1 correspond one-to-one to the m second domains. Wherein, b is an integer less than or equal to X, m is an integer less than or equal to b, and X is greater than or equal to 1, and b and m are greater than or equal to 0.
15. The communication method according to any one of claims 1 to 11, It is characterized in that When the link failure cell satisfies a preset condition, the first indication information indicates an identifier of the link failure cell by way of a status value; and / or, When the situation of the link failure cell does not satisfy the preset condition, the first indication information indicates the identifier of the link failure cell in a bitmap manner.
16. The communication method according to any one of claims 1 to 15, It is characterized in that The link failure cell situation includes: the number of link failure cells and / or the effective load of the information of the link failure cells.
17. A communication method, It is characterized in that include: receiving first indication information, where the first indication information indicates information of a link failure cell, and the first indication information is determined based on a situation of the link failure cell; Based on the first indication information, the link of the cell with link failure is restored.
18. The communication method according to claim 17, It is characterized in that Before receiving the first indication information, the communication method further includes: receiving second indication information, where the second indication information indicates a cell link failure; Determine a first resource carrying the first indication information according to the second resource carrying the second indication information or the second indication information.
19. The communication method according to claim 18, It is characterized in that The communication method further comprises: Send third indication information, where the third indication information indicates a first resource that carries the first indication information.
20. The communication method according to any one of claims 17 to 19, It is characterized in that The first resource carries the first indication information in a corresponding format.
21. The communication method according to any one of claims 17 to 20, It is characterized in that The first indication information is determined based on the situation of the link failure cell, and includes: The format of the first indication information is determined based on the situation of the link failure cell; and / or, the resources carrying the first indication information are determined based on the situation of the link failure cell.
22. The communication method according to claim 21, It is characterized in that The format of the first indication information is determined based on the situation of the link failure cell, including: The format of the first indication information is determined according to the size of resources allocated by the network device.
23. The communication method according to claim 22, It is characterized in that The format of the first indication information is determined according to the size of resources allocated by the network device, and includes: If the resources allocated by the network device can carry the first indication information in the second format, the format of the first indication information is the second format; otherwise, if the resources allocated by the network device can carry the first indication information in the first format, the format of the first indication information is the first format.
24. The communication method according to any one of claims 17 to 23, It is characterized in that The format of the first indication information is the first format or the second format, The first format and the second format satisfy one or more of the following: The number of bits occupied by the first indication information in the first format is smaller than the number of bits occupied by the first indication information in the second format; The first indication information in the first format indicates information of N1 link failure cells, and the first indication information in the second format indicates information of N2 link failure cells, wherein N1 and N2 are integers greater than 1 or equal to 1, and N1 <N2; The payload of information included in the first indication information in the first format is smaller than the payload of information included in the first indication information in the second format.
25. The communication method according to claim 24, It is characterized in that The first format and the second format satisfy one or more of the following: The maximum number of bits occupied by the first indication information in the first format is less than the maximum number of bits occupied by the first indication information in the second format; The first indication information in the first format indicates information of the N1 link failure cells at most, and the first indication information in the second format indicates information of the N2 link failure cells at most; The maximum value of the load of information included in the first indication information in the first format is smaller than the maximum value of the load of information included in the first indication information in the second format.
26. The communication method according to claim 24 or 25, It is characterized in that The format of the first indication information is the first format, and the first indication information in the first format includes one or more of the following information: A serving cell identification field, a first field, or a second field; The serving cell identification field indicates the identification of the link failure cell through a status value. The first domain indicates whether there is a corresponding second domain for the link failure cell indicated by the serving cell identification domain, The second field indicates reference signal information used to recover the link of the cell with link failure indicated by the serving cell identification field.
27. The communication method according to claim 24 or 25, It is characterized in that The format of the first indication information is a second format, and the first indication information in the second format includes one or more of the following information: A serving cell identification field, a first field, or a second field; The serving cell identification field indicates the identification of the link failure cell through a bitmap. The first domain indicates whether there is a corresponding second domain for the link failure cell indicated by the serving cell identification domain, The second field indicates reference signal information used to recover the link of the cell with link failure indicated by the serving cell identification field.
28. The communication method according to claim 27, It is characterized in that The first indication information in the second format includes: X Ci fields, b first fields, m second fields, and the serving cell identification field includes the X Ci fields; Among the X Ci domains, there are b Ci domains with a value of 1, and the b Ci domains with a value of 1 correspond one-to-one to the b first domains. There are m first domains with a value of 1 among the b first domains, and the m first domains with a value of 1 correspond one-to-one to the m second domains. Wherein, b is an integer less than or equal to X, m is an integer less than or equal to b, and X is greater than or equal to 1, and b and m are greater than or equal to 0.
29. The communication method according to any one of claims 17 to 25, It is characterized in that When the link failure cell satisfies a preset condition, the first indication information indicates an identifier of the link failure cell by way of a status value; and / or, When the situation of the link failure cell does not satisfy the preset condition, the first indication information indicates the identifier of the link failure cell in a bitmap manner.
30. The communication method according to any one of claims 17 to 29, It is characterized in that The link failure cell situation includes: the number of link failure cells and / or the effective load of the information of the link failure cells.
31. A communication device, It is characterized in that include: Processing unit and communication unit, The processing unit is used to: determine a link failure of at least one cell; The communication unit is used to: send first indication information, where the first indication information indicates information of a link failure cell, The first indication information is determined based on the situation of the link failure cell.
32. The device according to claim 31, It is characterized in that The communication unit is also used for: According to the situation of the cell with link failure, second indication information is sent on the corresponding second resource, and the second indication information indicates that the cell link has failed.
33. The device according to claim 32, It is characterized in that The second indication information is used to request a first resource that carries the first indication information.
34. The device according to claim 31, It is characterized in that The communication unit is specifically used for: Second indication information is sent on a third resource, wherein the second indication information is used to request a first resource that carries the first indication information.
35. The device according to any one of claims 31 to 34, It is characterized in that The communication unit is also used for: Third indication information is received, where the third indication information indicates a first resource that carries the first indication information.
36. The device according to any one of claims 31 to 35, It is characterized in that The first resource carries the first indication information in a corresponding format.
37. The device according to any one of claims 31 to 36, It is characterized in that The first indication information is determined based on the situation of the link failure cell, and includes: The format of the first indication information is determined based on the situation of the link failure cell; and / or, the resources carrying the first indication information are determined based on the situation of the link failure cell.
38. The device according to claim 37, It is characterized in that The format of the first indication information is determined based on the situation of the link failure cell, including: The format of the first indication information is determined according to the size of resources allocated by the network device.
39. The device according to claim 38, It is characterized in that The format of the first indication information is determined according to the size of resources allocated by the network device, and includes: If the resources allocated by the network device can carry the first indication information in the second format, the format of the first indication information is the second format; otherwise, if the resources allocated by the network device can carry the first indication information in the first format, the format of the first indication information is the first format.
40. The device according to any one of claims 31 to 39, It is characterized in that The format of the first indication information is the first format or the second format, The first format and the second format satisfy one or more of the following: The number of bits occupied by the first indication information in the first format is smaller than the number of bits occupied by the first indication information in the second format; The first indication information in the first format indicates information of N1 link failure cells, and the first indication information in the second format indicates information of N2 link failure cells, wherein N1 and N2 are integers greater than 1 or equal to 1, and N1 <N2; The payload of information included in the first indication information in the first format is smaller than the payload of information included in the first indication information in the second format.
41. The device according to claim 40, It is characterized in that The first format and the second format satisfy one or more of the following: The maximum number of bits occupied by the first indication information in the first format is less than the maximum number of bits occupied by the first indication information in the second format; The first indication information in the first format indicates information of the N1 link failure cells at most, and the first indication information in the second format indicates information of the N2 link failure cells at most; The maximum value of the load of information included in the first indication information in the first format is smaller than the maximum value of the load of information included in the first indication information in the second format.
42. The device according to claim 40 or 41, It is characterized in that The format of the first indication information is the first format, and the first indication information in the first format includes one or more of the following information: A serving cell identification field, a first field, or a second field; The serving cell identification field indicates the identification of the link failure cell through a status value. The first domain indicates whether there is a corresponding second domain for the link failure cell indicated by the serving cell identification domain, The second field indicates reference signal information used to recover the link of the cell with link failure indicated by the serving cell identification field.
43. The device according to claim 40 or 41, It is characterized in that The format of the first indication information is a second format, and the first indication information in the second format includes one or more of the following information: A serving cell identification field, a first field, or a second field; The serving cell identification field indicates the identification of the link failure cell through a bitmap. The first domain indicates whether there is a corresponding second domain for the link failure cell indicated by the serving cell identification domain, The second field indicates reference signal information used to recover the link of the cell with link failure indicated by the serving cell identification field.
44. The device according to claim 43, It is characterized in that The first indication information in the second format includes: X Ci fields, b first fields, m second fields, and the serving cell identification field includes the X Ci fields; Among the X Ci domains, there are b Ci domains with a value of 1, and the b Ci domains with a value of 1 correspond one-to-one to the b first domains. There are m first domains with a value of 1 among the b first domains, and the m first domains with a value of 1 correspond one-to-one to the m second domains. Wherein, b is an integer less than or equal to X, m is an integer less than or equal to b, and X is greater than or equal to 1, and b and m are greater than or equal to 0.
45. The device according to any one of claims 31 to 41, It is characterized in that When the link failure cell satisfies a preset condition, the first indication information indicates an identifier of the link failure cell by way of a status value; and / or, When the situation of the link failure cell does not satisfy the preset condition, the first indication information indicates the identifier of the link failure cell in a bitmap manner.
46. The device according to any one of claims 31 to 45, It is characterized in that The link failure cell situation includes: the number of link failure cells and / or the effective load of the information of the link failure cells.
47. The device according to any one of claims 31 to 46, It is characterized in that The processing unit is a processor, and the communication unit is a transceiver.
48. The device according to any one of claims 31 to 47, It is characterized in that The device is any one of the following: a terminal device, a chip or a chip system.
49. A communication device, It is characterized in that include: Processing unit and communication unit, The communication unit is used to: receive first indication information, where the first indication information indicates information of a link failure cell, and the first indication information is determined based on a situation of the link failure cell; The processing unit is used to: restore the link of the cell with link failure based on the first indication information.
50. The device according to claim 49, It is characterized in that The communication unit is also used for: receiving second indication information, where the second indication information indicates a cell link failure; The processing unit is specifically configured to determine a first resource carrying the first indication information according to a second resource carrying the second indication information or the second indication information.
51. The device according to claim 50, It is characterized in that The communication unit is also used for: Send third indication information, where the third indication information indicates a first resource that carries the first indication information.
52. The device according to any one of claims 49 to 51, It is characterized in that The first resource carries the first indication information in a corresponding format.
53. The device according to any one of claims 49 to 52, It is characterized in that The first indication information is determined based on the situation of the link failure cell, and includes: The format of the first indication information is determined based on the situation of the link failure cell; and / or, the resources carrying the first indication information are determined based on the situation of the link failure cell.
54. The device according to claim 53, It is characterized in that The format of the first indication information is determined based on the situation of the link failure cell, including: The format of the first indication information is determined according to the size of resources allocated by the network device.
55. The device according to claim 54, It is characterized in that The format of the first indication information is determined according to the size of resources allocated by the network device, and includes: If the resources allocated by the network device can carry the first indication information in the second format, the format of the first indication information is the first second format; otherwise, if the resources allocated by the network device can carry the first indication information in the first format, the format of the first indication information is the first format.
56. The device according to any one of claims 49 to 55, It is characterized in that The format of the first indication information is the first format or the second format, The first format and the second format satisfy one or more of the following: The number of bits occupied by the first indication information in the first format is smaller than the number of bits occupied by the first indication information in the second format; The first indication information in the first format indicates information of N1 link failure cells, and the first indication information in the second format indicates information of N2 link failure cells, wherein N1 and N2 are integers greater than 1 or equal to 1, and N1 <N2; The payload of information included in the first indication information in the first format is smaller than the payload of information included in the first indication information in the second format.
57. The device according to claim 56, It is characterized in that The first format and the second format satisfy one or more of the following: The maximum number of bits occupied by the first indication information in the first format is less than the maximum number of bits occupied by the first indication information in the second format; The first indication information in the first format indicates information of the N1 link failure cells at most, and the first indication information in the second format indicates information of the N2 link failure cells at most; The maximum value of the load of information included in the first indication information in the first format is smaller than the maximum value of the load of information included in the first indication information in the second format.
58. The device according to claim 56 or 57, It is characterized in that The format of the first indication information is the first format, and the first indication information in the first format includes one or more of the following information: A serving cell identification field, a first field, or a second field; The serving cell identification field indicates the identification of the link failure cell through a status value. The first domain indicates whether there is a corresponding second domain for the link failure cell indicated by the serving cell identification domain, The second field indicates reference signal information used to recover the link of the cell with link failure indicated by the serving cell identification field.
59. The device according to claim 56 or 57, It is characterized in that The format of the first indication information is a second format, and the first indication information in the second format includes one or more of the following information: A serving cell identification field, a first field, or a second field; The serving cell identification field indicates the identification of the link failure cell through a bitmap. The first domain indicates whether there is a corresponding second domain for the link failure cell indicated by the serving cell identification domain, The second field indicates reference signal information used to recover the link of the cell with link failure indicated by the serving cell identification field.
60. The device according to claim 59, It is characterized in that The first indication information in the second format includes: X Ci fields, b first fields, m second fields, and the serving cell identification field includes the X Ci fields; Among the X Ci domains, there are b Ci domains with a value of 1, and the b Ci domains with a value of 1 correspond one-to-one to the b first domains. There are m first domains with a value of 1 among the b first domains, and the m first domains with a value of 1 correspond one-to-one to the m second domains. Wherein, b is an integer less than or equal to X, m is an integer less than or equal to b, and X is greater than or equal to 1, and b and m are greater than or equal to 0.
61. The device according to any one of claims 49 to 57, It is characterized in that When the link failure cell satisfies a preset condition, the first indication information indicates an identifier of the link failure cell by way of a status value; and / or, When the situation of the link failure cell does not satisfy the preset condition, the first indication information indicates the identifier of the link failure cell in a bitmap manner.
62. The device according to any one of claims 49 to 61, It is characterized in that The link failure cell situation includes: the number of link failure cells and / or the effective load of the information of the link failure cells.
63. The device according to any one of claims 49 to 62, It is characterized in that The processing unit is a processor, and the communication unit is a transceiver.
64. The device according to any one of claims 49 to 63, It is characterized in that The device is any one of the following: a network device, a chip or a chip system.
65. A communication device, It is characterized in that The method comprises at least one processor configured to execute the method according to any one of claims 1 to 16.
66. A communication device comprising at least one processor, wherein the at least one processor is configured to execute the method of any one of claims 17 to 30.
67. A processing device, It is characterized in that The device comprises at least one processor, wherein the at least one processor is configured to execute a computer program stored in a memory, so that the device implements the method according to any one of claims 1 to 16.
68. A processing device, It is characterized in that The device comprises at least one processor, wherein the at least one processor is configured to execute a computer program stored in a memory so that the device implements the method according to any one of claims 17 to 30.
69. A processing device, It is characterized in that include: A communication interface for inputting and / or outputting information; A processor, configured to execute a computer program so that the apparatus implements the method according to any one of claims 1 to 16.
70. A processing device, It is characterized in that include: A communication interface for inputting and / or outputting information; A processor, configured to execute a computer program so that the apparatus implements the method according to any one of claims 17 to 30.
71. A processing device, It is characterized in that include: Memory for storing computer programs; A processor, configured to call and execute the computer program from the memory, so that the apparatus implements the method according to any one of claims 1 to 16.
72. A processing device, It is characterized in that include: Memory for storing computer programs; A processor, configured to call and execute the computer program from the memory, so that the apparatus implements the method according to any one of claims 17 to 30.
73. A computer readable storage medium, It is characterized in that The invention comprises a computer program which, when being run on a computer, causes the computer to execute the method according to any one of claims 1 to 16.
74. A computer readable storage medium, It is characterized in that The method comprises a computer program which, when executed on a computer, causes the computer to execute the method according to any one of claims 17 to 30.
75. A computer program product, comprising a computer program, which, when executed on a computer, causes the computer to execute the method according to any one of claims 1 to 16.
76. A computer program product, comprising a computer program, which, when executed on a computer, causes the computer to execute the method according to any one of claims 17 to 30.