WO2023010478A1

WO2023010478A1 - Signal sending method and apparatus, and system

Info

Publication number: WO2023010478A1
Application number: PCT/CN2021/111043
Authority: WO
Inventors: 陈哲; 张磊; 王昕�
Original assignee: 富士通株式会社; 陈哲; 张磊; 王昕�
Priority date: 2021-08-05
Filing date: 2021-08-05
Publication date: 2023-02-09

Abstract

Embodiments of the present application provide a signal sending method and apparatus, and a system. The method comprises: a terminal device sending beam failure recovery information to a network device, the beam failure recovery information comprising an ID of a beam failure identification reference signal group that identifies beam failure, and an ID of an identified candidate reference signal used for link recovery, and the terminal device being provided with two beam failure identification reference signal groups in one cell; after receiving feedback from the network device on the beam failure recovery information, and after a set time interval, the terminal device, according to the ID of the identified candidate reference signal used for link recovery, determining a first power control parameter used by the cell to send a PUCCH associated with a first closed-loop power control index, the first closed-loop power control index being associated with the ID of the beam failure identification reference signal group that identifies beam failure.

Description

Signal transmission method, device and system

technical field

This application relates to the field of communications.

Background technique

NR Rel-17 (New Radio Release 17) introduces a new mechanism for sending uplink control information. This mechanism supports more flexible uplink control transmission, thereby enhancing the reliability of uplink data transmission.

Currently, the NR (New Radio, New Radio) system supports the beam failure recovery procedure (beam failure recovery procedure, BFR procedure), or called the link failure recovery procedure (link failure recovery procedure, LFR procedure). This process supports the terminal device to reset the power control parameters corresponding to the uplink PUCCH (Physical Uplink Control Channel, Physical Uplink Control Channel) transmission after beam failure occurs.

It should be noted that the above introduction to the technical background is only for the convenience of a clear and complete description of the technical solution of the present application, and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are known to those skilled in the art just because these solutions are described in the background technology section of this application.

Contents of the invention

The inventors have found that the link for transmitting uplink control information (PUCCH) in the high frequency band is easily affected by occlusion, and the channel may deteriorate instantaneously. In order to reduce the impact of occlusion on the link, a feasible way is to allow the uplink control information to be sent in a space diversity manner. That is to say, on the user side, the same uplink control information reaches the network device via different airspace paths or different TRPs (transmission and reception points). In this way, when one path is blocked, other paths can still continue to work, thereby ensuring low delay and high reliability of uplink control information transmission.

In order to support the above-mentioned transmission of multiple TRP uplink control information, one method is to send the same uplink control information (for example, PUCCH) twice, the first time to one TRP, and the second time to another TRP. Another method is to adaptively select from which TRP to send the uplink control information in different time periods according to the change of the uplink.

For the above multi-TRP scenario, the beam failure recovery process can be extended to support the beam failure recovery process for each TRP. That is to say, the terminal device can know which TRP fails by detecting the reference signal, and reports the failure information to the network device. After the network device makes a corresponding response, the terminal device restores the uplink of the corresponding TRP according to the corresponding TRP failure information, including resetting/updating the power control parameters used for sending the uplink control information (PUCCH).

However, currently, for a multi-TRP scenario, after beam failure occurs in one or more TRPs and the terminal device successfully receives the corresponding beam failure response, there is no corresponding PUCCH recovery method. More specifically, there is no corresponding method for resetting/updating PUCCH power control parameters.

In order to solve the above problem or other similar problems, embodiments of the present application provide a signal sending method, device, and system.

According to an aspect of the embodiments of the present application, there is provided a signal sending device configured in a terminal device, wherein the device includes:

A sending unit, which sends beam failure recovery information to the network device, where the beam failure recovery information includes the ID (k) of the beam failure detection reference signal group that detects the beam failure and the detected (identified) beam failure detection reference signal group (identified) for link recovery. Candidate reference signal ID(q _new ), wherein the terminal device is configured with two beam failure detection reference signal groups in one cell;

A determining unit, after the terminal device receives the feedback from the network device for the beam failure recovery information, after a certain time interval, according to the detected candidate reference signal ID for link recovery ( q _new ) to determine the first power control parameter used to transmit the PUCCH related to the first closed-loop power control index in the cell, where the first closed-loop power control index is the same as the beam failure detection reference of the detected beam failure The ID(k) of the signal group is correlated.

One of the beneficial effects of the embodiment of the present application is that: according to the embodiment of the present application, in the scenario of multiple TRPs, the power control parameters of the PUCCH can be reset/updated accordingly after beam failure occurs in one or more TRPs, and the control of the PUCCH recovery.

With reference to the following description and accompanying drawings, specific embodiments of the present application are disclosed in detail, indicating the manner in which the principles of the application may be employed. It should be understood that the embodiments of the present application are not limited thereby in scope. Embodiments of the present application encompass many changes, modifications and equivalents within the spirit and scope of the appended claims.

Features described and/or shown with respect to one embodiment can be used in the same or similar manner in one or more other embodiments, in combination with or instead of features in other embodiments.

It should be emphasized that the term "comprising/comprising" when used herein refers to the presence of a feature, integer, step or component, but does not exclude the presence or addition of one or more other features, integers, steps or components.

Description of drawings

Elements and features described in one drawing or one embodiment of an embodiment of the present application may be combined with elements and features shown in one or more other drawings or embodiments. Furthermore, in the drawings, like numerals indicate corresponding parts in the several figures and may be used to indicate corresponding parts used in more than one embodiment.

The included drawings are used to provide a further understanding of the embodiments of the present application, which constitute a part of the specification, are used to illustrate the implementation of the present application, and explain the principle of the present application together with the text description. Apparently, the drawings in the following description are only some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without creative efforts. In the attached picture:

Fig. 1 is a schematic diagram of the signal sending method of the embodiment of the first aspect;

2 to 12 are schematic diagrams of examples of PUCCH transmission;

Fig. 13 is a schematic diagram of a signal sending device in an embodiment of the second aspect;

FIG. 14 is a schematic diagram of a communication system according to an embodiment of the present application;

Fig. 15 is a schematic diagram of a terminal device according to an embodiment of the present application.

Detailed ways

The foregoing and other features of the present application will become apparent from the following description, taken with reference to the accompanying drawings. In the specification and drawings, specific embodiments of the present application are specifically disclosed, which indicate some embodiments in which the principles of the present application can be adopted. It should be understood that the present application is not limited to the described embodiments, on the contrary, the present application The application includes all amendments, variations and equivalents that come within the scope of the appended claims.

In this embodiment of the application, the terms "first", "second", etc. are used to distinguish different elements from the title, but do not indicate the spatial arrangement or time order of these elements, and these elements should not be referred to by these terms restricted. The term "and/or" includes any and all combinations of one or more of the associated listed items. The terms "comprising", "including", "having" and the like refer to the presence of stated features, elements, elements or components, but do not exclude the presence or addition of one or more other features, elements, elements or components.

In the embodiments of the present application, the singular forms "a", "the" and the like include plural forms, which should be broadly understood as "one" or "a class" and not limited to the meaning of "one"; in addition, the term "all The above should be understood to include both the singular and the plural, unless the context clearly dictates otherwise. Furthermore, the term "based on" should be understood as "at least in part based on..." and the term "based on" should be understood as "at least in part based on...", unless the context clearly indicates otherwise.

In this embodiment of the application, the term "communication network" or "wireless communication network" may refer to a network conforming to any of the following communication standards, such as Long Term Evolution (LTE, Long Term Evolution), Enhanced Long Term Evolution (LTE-A, LTE- Advanced), Wideband Code Division Multiple Access (WCDMA, Wideband Code Division Multiple Access), High-Speed Packet Access (HSPA, High-Speed Packet Access), etc.

Moreover, the communication between devices in the communication system can be carried out according to any stage of communication protocol, for example, it can include but not limited to the following communication protocols: 1G (generation), 2G, 2.5G, 2.75G, 3G, 4G, 4.5G and future 5G, New Radio (NR, New Radio), etc., and/or other communication protocols that are currently known or will be developed in the future.

In this embodiment of the present application, the term "network device" refers to, for example, a device in a communication system that connects a terminal device to a communication network and provides services for the terminal device. Network equipment may include but not limited to the following equipment: base station (BS, Base Station), access point (AP, Access Point), transceiver node (TRP, Transmission Reception Point), broadcast transmitter, mobile management entity (MME, Mobile Management Entity), gateway, server, radio network controller (RNC, Radio Network Controller), base station controller (BSC, Base Station Controller) and so on.

The base station may include but not limited to: Node B (NodeB or NB), evolved Node B (eNodeB or eNB), and 5G base station (gNB), etc., and may also include remote radio head (RRH, Remote Radio Head), remote End radio unit (RRU, Remote Radio Unit), relay (relay) or low power node (such as femto, pico, etc.). And the term "base station" may include some or all of their functions, each base station may provide communication coverage for a particular geographic area. The term "cell" can refer to a base station and/or its coverage area depending on the context in which the term is used.

In the embodiment of the present application, the term "User Equipment" (UE, User Equipment) refers to, for example, a device that accesses a communication network through a network device and receives network services, and may also be called "Terminal Equipment" (TE, Terminal Equipment). A terminal device may be fixed or mobile, and may also be referred to as a mobile station (MS, Mobile Station), terminal, user, subscriber station (SS, Subscriber Station), access terminal (AT, Access Terminal), station, etc. wait.

Terminal equipment may include but not limited to the following equipment: cellular phone (Cellular Phone), personal digital assistant (PDA, Personal Digital Assistant), wireless modem, wireless communication device, handheld device, machine type communication device, laptop computer, cordless phone , smartphones, smart watches, digital cameras, and more.

For another example, in scenarios such as the Internet of Things (IoT, Internet of Things), the terminal device can also be a machine or device for monitoring or measurement, such as but not limited to: a machine type communication (MTC, Machine Type Communication) terminal, Vehicle communication terminal, device to device (D2D, Device to Device) terminal, machine to machine (M2M, Machine to Machine) terminal, etc.

Various implementation manners of the embodiments of the present application will be described below with reference to the accompanying drawings. These embodiments are exemplary only, and do not limit the present application.

Embodiments of the first aspect

An embodiment of the present application provides a method for sending a signal, which is described from a terminal device side.

Fig. 1 is a schematic diagram of the signal transmission method of the embodiment of the present application, please refer to Fig. 1, the method includes:

101: The terminal device sends beam failure recovery information to the network device, and the beam failure recovery information includes the ID (k) of the beam failure detection reference signal group that detects the beam failure and the detected (identified) beam failure detection reference signal group (identified) used for link recovery. Candidate reference signal ID(q _new ), wherein the terminal device is configured with two beam failure detection reference signal groups in one cell;

102: After receiving the feedback from the network device on the beam failure recovery information, after a certain time interval, the terminal device, according to the detected candidate reference signal ID(q _new ) determining the first power control parameter used by the cell to send the PUCCH related to the first closed-loop power control index (l), wherein the first closed-loop power control index (l) is related to the detected beam failure The ID(k) correlation of the beam failure detection reference signal group.

According to the embodiment of the present application, in a multi-TRP scenario, after beam failure occurs in one or more TRPs, the power control parameters of the PUCCH can be reset/updated to realize recovery of the PUCCH.

In this embodiment of the present application, the aforementioned beam failure detection reference signal group in which beam failure is detected means that the radio link quality corresponding to all first reference signal resource configurations in the beam failure detection reference signal group is lower than a predefined threshold (Q _{out, LR} ), where the definition of Q _{out, LR} refers to existing standards. The foregoing first reference signal resource configuration refers to the reference signal resource configuration used by the terminal device for assessing (assess) radio link quality.

In this embodiment of the present application, the PUCCH related to the first closed-loop power control index means, for example, that the PUCCH resource for sending the PUCCH is related to the first closed-loop power control index. Wherein, the correlation between the PUCCH resource and the first closed-loop power index means, for example, that the PUCCH resource is indicated with a second closed-loop power control index, and the second closed-loop power control index is the same as the aforementioned first closed-loop power control index. Alternatively, the correlation between the PUCCH resource and the first closed-loop power index means, for example, that the PUCCH resource is indicated with a spatial relationship, and the spatial relationship includes a second closed-loop power control index, and the second closed-loop power control index is related to the aforementioned first closed-loop power index. The control index is the same.

In the above embodiments, the PUCCH resource for sending the PUCCH may be associated with one set of power control parameters, or may be associated with two sets of power control parameters. Moreover, the above two sets of power control parameters may correspond to the same closed-loop index, or may correspond to different closed-loop indexes.

For example, "1=0 associated PUCCH transmission" means that PUCCH transmission corresponds to one PUCCH resource (for example, PUCCH resource#1). Wherein, PUCCH resource#1 is associated with one or two sets of power control parameters according to corresponding RRC signaling or MAC-CE signaling. Furthermore, PUCCH resource#1 is activated by RRC signaling or MAC-CE with one or two spatial relation information (spatial relation information). Wherein, each spatial relationship information includes a set of power control parameters. If PUCCH resource#1 is associated with only one set of power control parameters, and l=0 corresponding to this power control parameter, it is considered that the corresponding PUCCH transmission is associated with l=0. If PUCCH resource#1 is associated with two sets of power control parameters, the corresponding PUCCH transmission includes two repetitions (Rep#2-1 and Rep#2-2). For example, the first set of power control parameters corresponds to l=0, then Rel#2-1 corresponds to l=0; the second set of power control parameters corresponds to l=1, then Rel#2-2 corresponds to l=1. Therefore, it is considered that Rep#2-1 or the PUCCH transmission occasion corresponding to Rep#2-1 is associated with l=0.

In addition, the "1=1-associated PUCCH transmission" is similar to the above-mentioned "1=0-associated PUCCH transmission", and the description is omitted here.

In this embodiment of the present application, the PUCCH related to the first closed-loop power control index refers to, for example, the PUCCH whose PUCCH transmission occasion (PUCCH transmission occasion) corresponds to the above-mentioned first closed-loop power control index. Wherein, a corresponding relationship between a PUCCH transmission occasion (PUCCH transmission occasion) and a closed-loop power control index can be determined according to RRC or MAC-CE indication signaling related to the PUCCH. This application is not limited thereto. In addition, the RRC or MAC-CE indication signaling is received before the beam failure recovery information is fed back.

In this embodiment of the present application, the correlation between the first closed-loop power control index (l) and the group ID (k) of the beam failure detection reference signal for which beam failure is detected means that the first closed-loop power control index ( The value of l) is equal to at least one of the group ID values of the beam failure detection reference signal for which the beam failure is detected.

For example, the value of the group ID of the beam failure detection reference signal that detects the beam failure is 0, that is, k=0, and the value of the first closed-loop power control index is 0, that is, l=0, and the two are considered to be related; or, the detection The value of the group ID of the beam failure detection reference signal of the beam failure is 1, that is, k=1, and the value of the first closed-loop power control index is 1, that is, l=1, and the two are considered to be related; or, the beam failure is detected The value of the group ID of the beam failure detection reference signal is 0 and 1, that is, k=0,1, and the value of the first closed-loop power control index is 0, that is, l=0, and the two are considered to be related; or, the beam is detected The value of the group ID of the failed beam failure detection reference signal is 0 and 1, that is, k=0,1, and the value of the first closed-loop power control index is 1, that is, l=1, and the two are considered to be related.

In some embodiments, the value of the above-mentioned first closed-loop power control index (1) is equal to the value of the ID of the first beam failure detection reference signal group; wherein, the ID of the first beam failure detection reference signal group refers to the detected The ID(k) of the beam failure detection reference signal group of the beam failure corresponds to the ID of the beam failure detection reference signal group of the detected candidate reference signal for link recovery.

For example, in the example shown in FIG. 2 below, the ID of the beam failure detection reference signal group that detects the beam failure is k=0, and it has a corresponding detected candidate reference signal for link recovery, that is, q _{new, 0} , the value of the first closed-loop power control index is also 0, that is, l=0, and the terminal device determines the first power control parameter used by the PUCCH related to l=0 according to qnew _,0 .

For another example, in the example shown in Figure 3 below, the ID of the beam failure detection reference signal group that detects beam failure is k=1, and it has a corresponding detected candidate reference signal for link recovery, that is, q _{new ,1} , the value of the first closed-loop power control index is also 1, that is, l=1, and the terminal device determines the first power control parameter used by the PUCCH related to l=1 according to q _new,1 .

For another example, in the example shown in FIG. 4 below, the IDs of the beam failure detection reference signal groups that detect beam failures are k=0, 1, and they respectively have corresponding detected candidate reference signals for link recovery, That is, q _new,0 and q _new,1 , the values of the first closed-loop power control index are also 0 and 1, that is, l=0,1, and the terminal device determines the PUCCH related to l=0 according to q _new, 0 The first power control parameter, and determine the first power control parameter used by the PUCCH related to l=1 according to q _new,1 .

For another example, in the example shown in FIG. 5 below, the ID of the beam failure detection reference signal group that detects the beam failure is k=0,1, and k=0 has a corresponding detected candidate reference signal for link recovery. That is, q _new,0 , and k=1 does not have a corresponding detected candidate parameter signal for link recovery, then the value of the first closed-loop power control index is 0, that is, l=0, and the terminal device according to q _new,0 Determine the first power control parameter used by the PUCCH related to l=0.

For another example, in the example shown in FIG. 6 below, the ID of the beam failure detection reference signal group that detects the beam failure is k=0,1, and k=0 has a corresponding detected candidate reference signal for link recovery. That is, q _new,0 , and k=1 does not have a corresponding detected candidate parameter signal for link recovery, then the value of the first closed-loop power control index is 0, that is, l=0, and the terminal device according to q _new,0 Determine the first power control parameter used by the PUCCH related to l=0. In the example in FIG. 6 , the terminal device also determines the first power control parameter used by the PUCCH related to l=1 according to q _new,0 .

For another example, in the example shown in FIG. 7 below, the ID of the beam failure detection reference signal group that detects the beam failure is k=0, 1, and k=1 has a corresponding detected candidate reference signal for link recovery, That is, q _new,1 , and k=0 does not have a corresponding detected candidate parameter signal for link recovery, then the value of the first closed-loop power control index is 1, that is, l=1, and the terminal device uses q _new,1 Determine the first power control parameter used by the PUCCH related to l=1.

For another example, in the example shown in Figure 8 below, the ID of the beam failure detection reference signal group that detects the beam failure is k=0, 1, and k=1 has a corresponding detected candidate reference signal for link recovery, That is, q _new,1 , and k=0 does not have a corresponding detected candidate parameter signal for link recovery, then the value of the first closed-loop power control index is 1, that is, l=1, and the terminal device uses q _new,1 Determine the first power control parameter used by the PUCCH related to l=1. In the example in FIG. 8 , the terminal device also determines the first power control parameter used by the PUCCH related to l=0 according to q _new,1 .

The examples in FIG. 2 to FIG. 8 will be further described below.

In the examples shown in Figure 2 to Figure 8 below, in a cell, terminal equipment is configured with two sets of beam failure detection reference signals (beam failure detection reference signal, BFD-RS), IDs are 0 and 1, respectively, corresponding to TRP #0 and TRP#1. In addition, the terminal equipment is also configured with two sets of candidate reference signals (candidate reference signals), IDs are 0 and 1, corresponding to TRP#0 and TRP#1, these candidate reference signals are used to determine the candidate beams for beam recovery (identifying the candidate beams for recovery).

In addition, the terminal device is also configured with uplink TRP PUCCH transmission, that is, at least one PUCCH resource is associated with two sets of power control parameters, and the two sets of power control parameters correspond to different closed loop indexes (close loop index). In addition, the PUCCH resource may also be associated with one set of power control parameters; or, the PUCCH resource may be associated with two sets of power control parameters, and the two sets of power control parameters correspond to the same closed-loop index. In the embodiment of the present application, one PUCCH resource is associated with two sets of power control parameters, and the two sets of power control parameters correspond to different closed loop indexes respectively as an example, but not limited thereto.

Fig. 2 is a schematic diagram of an example of PUCCH transmission.

In the example in FIG. 2 , the terminal device detects the two groups of BFD-RSs, and finds that the BFD-RS group whose group ID is 0 satisfies the beam failure condition, which means that TRP #0 has failed. At this time, the terminal device sends a beam failure report (BFR report), or beam failure recovery information, to the network device, where the report includes the group ID (k) of the BFD-RS group where the beam failure occurred. In this example, because the terminal device detects that the BFD-RS group whose group ID is 0 fails, k=0. In addition, the terminal device selects the corresponding reference signal q _new,0 for link recovery by detecting the candidate reference signal related to TRP#0. q _new,0 is also included in this BFR report.

In addition, the network device receives the beam failure report (BFR report), and sends the corresponding feedback (BFR response), the terminal device receives the BFR response (BFR response), and after a certain time interval (for example, after 28 symbols) ), changing the power control parameters used for PUCCH transmission.

For example, for the PUCCH transmission occasion associated with l=0 (Rep#2-1), its power P' ₀ is determined according to q _new,0 ; in addition, the closed-loop power control index l' corresponding to P' ₀ is related to q _{new , the value of k corresponding to 0} (0) is equal. Specifically, l′=0, q _u =0, q _d =q _new,0 . For the meanings of q _u and q _d , refer to existing standards.

As can be seen from the example in Figure 2, when the BFD-RS group with k=0 has a beam failure and detects the corresponding reference signal q _new,0 for link recovery, the terminal device includes k in the reported BFR report =0 and q _new,0 , and determine the power control parameter P' ₀ used for the PUCCH transmission associated with l=0 according to q _new, 0.

Fig. 3 is a schematic diagram of another example of PUCCH transmission.

In the example in FIG. 3 , the terminal device detects the two groups of BFD-RSs, and finds that the BFD-RS group whose group ID is 1 satisfies the beam failure condition, which means that TRP#1 fails. At this time, the terminal device sends a beam failure report (BFR report), or beam failure recovery information, to the network device, where the report includes the group ID (k) of the BFD-RS group where the beam failure occurred. In this example, because the terminal device detects that the BFD-RS group whose group ID is 1 fails, k=1. In addition, the terminal device selects the corresponding reference signal q _new,1 for link recovery by detecting the candidate reference signal related to TRP#1. q _new,1 is also included in this BFR report.

For example, for the PUCCH transmission occasion associated with l=1 (Rep#2-1), its power _P'1 is determined according to q _new,1 ; in addition, the closed-loop power control index l' corresponding to _P'1 is related to q _{new , the value of k corresponding to 1} (1) is equal. Specifically, l′=1, q _u =0, q _d =q _new,1 . For the meanings of q _u and q _d , refer to existing standards.

As can be seen from the example in Figure 3, when the BFD-RS group with k=1 has a beam failure and detects the corresponding reference signal q _new,1 for link recovery, the terminal device includes k in the reported BFR report =1 and q _new,1 , and determine the power control parameter P' ₁ used for the PUCCH transmission associated with l=1 according to q _new,1 .

Fig. 4 is a schematic diagram of another example of PUCCH transmission.

In the example in FIG. 4 , the terminal device detects the two groups of BFD-RSs, and finds that the BFD-RS groups whose group IDs are 0 and 1 satisfy the beam failure condition, which means that both TRP#0 and TRP#1 have failed. At this time, the terminal device sends a beam failure report (BFR report), or beam failure recovery information, to the network device, where the report includes the group ID (k) of the BFD-RS group where the beam failure occurred. In this example, since the terminal device detects that the BFD-RS groups whose group IDs are 0 and 1 have failed, k=0,1. In addition, the terminal device selects the corresponding reference signal q _{new,0 for link recovery by detecting the candidate reference signal related to TRP#0; and the terminal device selects the corresponding reference signal q new,} 0 for link recovery by detecting the candidate reference signal signal, in which the corresponding reference signal q _new,1 for link recovery is selected. q _new,0 and q _new,1 are also included in this BFR report.

For example, for the PUCCH transmission occasion associated with l=1 (Rep#2-2), its power P' ₁ is determined according to q _new,1 ; in addition, the closed-loop power control index l' corresponding to P' ₁ is related to q _{new , the value of k corresponding to 1} (1) is equal. Specifically, l′=1, q _u =0, q _d =q _new,1 . For the meanings of q _u and q _d , refer to existing standards.

As can be seen from the example in Figure 4, when both k=0 and k=1 BFD-RS groups have beam failures, and the corresponding reference signals q _new,0 and q _new,1 for link recovery are detected , the terminal device includes k=0 and q _new,0 and k=1 and q _new,1 in the reported BFR report, and determines the power control parameter P used for the PUCCH transmission associated with l=0 according to q _new,0 ' ₀ , according to q _new,1, determine the power control parameter P' ₁ used for the PUCCH transmission associated with l=1.

Figure 5 and Figure 6 are schematic diagrams of two examples of PUCCH transmission.

In the examples shown in Figure 5 and Figure 6, the terminal device detects the two groups of BFD-RS, and finds that the BFD-RS groups whose group IDs are 0 and 1 all meet the beam failure condition, which means that both TRP#0 and TRP#1 have occurred. fail. At this time, the terminal device sends a beam failure report (BFR report), or beam failure recovery information, to the network device, where the report includes the group ID (k) of the BFD-RS group where the beam failure occurred. In this example, since the terminal device detects that the BFD-RS groups whose group IDs are 0 and 1 have failed, k=0,1. In addition, the terminal device selects the corresponding reference signal q _{new,0 for link recovery by detecting the candidate reference signal related to TRP#0; however, the terminal device selects the corresponding reference signal q new,0} for link recovery by detecting the candidate reference signal related to TRP#1 signal, no corresponding reference signal for link recovery is selected. Therefore, only q _new,0 is also included in this BFR report.

For example, for the PUCCH transmission occasion associated with l=0 (Rep#2-1), its power P' ₀ is determined according to q _new,0 ; in addition, the closed-loop power control index l' corresponding to P' ₀ is related to q _{new , the value of k corresponding to 0} (0) is equal, as shown in Figure 5 and Figure 6. Specifically, l′=0, q _u =0, q _d =q _new,0 . For the meanings of q _u and q _d , refer to existing standards.

In addition, for the PUCCH transmission occasion associated with l=1 (Rep#2-2), the terminal device may not process it, as shown in Figure 5; or, it may also determine its power P' ₁ according to q _new,0 , wherein, P' ₁ =P' ₀ , so it can be said that at this time, the closed-loop power control index corresponding to P' ₁ (the closed-loop power control index corresponding to the first power control parameter) l'=0, as shown in Figure 6 shown.

It can be seen from the examples in Fig. 5 and Fig. 6 that when both k=0 and k=1 BFD-RS groups have beam failures, and only the reference signal q _{new for link recovery corresponding to TRP#0 is detected, 0} , the terminal device includes k=0,1 and q _new,0 in the reported BFR report, and determines the power control parameter P' ₀ used for the PUCCH transmission associated with l=0 according to q _new, 0 , for the = 1 associated PUCCH transmission, since the reference signal corresponding to TRP#1 for link recovery is not selected, in the example of Figure 5, no processing may be performed; in the example of Figure 6, it may be determined according to q _new,0 The power control parameter P' ₁ used for the PUCCH transmission associated with l=1, in addition, since P' ₁ =P' ₀ , the closed-loop power control index l'=0 corresponding to P' ₁ is the same as q _{new , the value of the group ID (k=0) corresponding to 0} is the same.

FIG. 7 and FIG. 8 are schematic diagrams of other two examples of PUCCH transmission.

In the examples shown in Figure 7 and Figure 8, the terminal device detects these two groups of BFD-RS, and finds that the BFD-RS groups whose group IDs are 0 and 1 all meet the beam failure condition, which means that both TRP#0 and TRP#1 have occurred fail. At this time, the terminal device sends a beam failure report (BFR report), or beam failure recovery information, to the network device, where the report includes the group ID (k) of the BFD-RS group where the beam failure occurred. In this example, since the terminal device detects that the BFD-RS groups whose group IDs are 0 and 1 have failed, k=0,1. In addition, the terminal device does not select the corresponding reference signal for link recovery by detecting the candidate reference signal related to TRP#0; however, the terminal device selects the corresponding reference signal for link recovery by detecting the candidate reference signal related to TRP#1 The corresponding reference signal q _new,1 for link recovery is obtained. Therefore, only q _new,1 is also included in this BFR report.

For example, for the PUCCH transmission occasion associated with l=1 (Rep#2-2), its power P' ₁ is determined according to q _new,1 , and the closed-loop power control index l' corresponding to P' ₁ is related to q _{new, 1} corresponds to an equal value of k (1). Specifically, l′=1, q _u =0, q _d =q _new,1 . For the meanings of q _u and q _d , refer to existing standards.

In addition, for the PUCCH transmission occasion associated with l=0 (Rep#2-1), the terminal device may not do any processing, as shown in Figure 7; or, the terminal device may also determine its power P according to q _new,1 ' ₀ , where P' ₀ =P' ₁ , so it can be said that at this time, l'=1 corresponding to P' ₀ is equal to the value of k (1) corresponding to q _new,1 , as shown in FIG. 8 .

It can be seen from the examples in Fig. 7 and Fig. 8 that when both k=0 and k=1 BFD-RS groups have beam failures, and only the reference signal q _{new for link recovery corresponding to TRP#1 is detected, 1.} The terminal device includes k=0,1 and q _new,1 in the reported BFR report, and determines the power control parameter P' ₀ used for the PUCCH transmission associated with l=1 according to q _new, 1. = 0 associated PUCCH transmission, since the reference signal corresponding to TRP#1 for link recovery has not been selected, in the example of FIG. 7, it may not be processed. In the example _{of FIG.} The power control parameter P' ₀ used for the PUCCH transmission associated with l=0, in addition, since P' ₀ =P' ₁ , the closed-loop power control index l'=1 corresponding to P' ₀ is the same as q _{new , the value of the group ID (k=1) corresponding to 1} is the same.

In the above embodiment, the beam failure recovery information may further include the ID(j) of the candidate reference signal group corresponding to the detected (identified) candidate reference signal ID(q _new ) for link recovery. In addition, the ID(k) of the beam failure detection reference signal group that detects the beam failure has a corresponding ID of the beam failure detection reference signal group of the candidate reference signal for link recovery that is detected, which means that the detection IDs of beam failure detection reference signal groups that are identical to at least one of the candidate reference signal group IDs (j) among the beam failure detection reference signal group IDs (k) of beam failures.

For example, in the example shown in Figure 9 below, the ID of the beam failure detection reference signal group that detects beam failure is k=0, and the detected candidate reference signals for link recovery, namely q _{new, 0} and q _{new ,1} , then the beam failure recovery information may also include the IDs of the candidate reference signal groups corresponding to q _new,0 and q _new,1 , that is, j=0,1. Also, the value of k (k=0) and the value of j (j=0,1) are both 0, which is the same as j=0. This means that TRP#0 has a beam failure (k=0), and TRP#0 has detected a corresponding beam failure recovery reference signal (j=0). Thus, the value of the first closed-loop power control index is also 0 (corresponding to TRP#0), that is, l=0, and the terminal device determines the PUCCH related to l=0 according to _qnew,0 (reset/update TRP#0 corresponding The first power control parameter used by the PUCCH).

For another example, in the example shown in Figure 10 below, the ID of the beam failure detection reference signal group that detects beam failure is k=1, and the detected candidate reference signals for link recovery, namely q _{new, 0} and q _new,1 , the beam failure recovery information may further include IDs of candidate reference signal groups corresponding to q _new,0 and q _new,1 , that is, j=0,1. Also, the value of k (k=1) and the value of j (j=0,1) are both 1, which is the same as j=1. This means that TRP#1 has a beam failure (k=1), and TRP#1 has detected a corresponding beam failure recovery reference signal (j=1). Thus, the value of the first closed-loop power control index is also 1 (corresponding to TRP#1), that is, l=1, and the terminal device determines the PUCCH related to l=1 according to _qnew,1 (resetting/updating TRP#1 corresponds to The first power control parameter used by the PUCCH).

The examples in FIG. 9 and FIG. 10 are further described below.

In the examples shown in Figures 9 and 10, in a cell, terminal equipment is configured with two sets of beam failure detection reference signals (beam failure detection reference signal, BFD-RS), IDs are 0 and 1, corresponding to TRP# 0 and TRP #1. In addition, the terminal equipment is also configured with two sets of candidate reference signals (candidate reference signals), IDs are 0 and 1, corresponding to TRP#0 and TRP#1, these candidate reference signals are used to determine the candidate beams for beam recovery (identifying the candidate beams for recovery). In addition, similar to the examples in Figures 2 to 8, the terminal device is also configured with uplink multi-TRP PUCCH transmission, that is, at least one PUCCH resource is associated with two sets of power control references, and the two sets of power control parameters correspond to different Closed loop index.

FIG. 9 is a schematic diagram of an example of PUCCH transmission.

In the example in FIG. 9 , the terminal device detects the two groups of BFD-RSs, and finds that the BFD-RS group whose group ID is 0 satisfies the beam failure condition, which means that TRP#0 fails. At this time, the terminal device sends a beam failure report (BFR report), or beam failure recovery information, to the network device, where the report includes the group ID (k) of the BFD-RS group where the beam failure occurred. In this example, because the terminal device detects that the BFD-RS group whose group ID is 0 fails, k=0. In addition, the terminal device selects the corresponding reference signal q _new,0 for link recovery by detecting the candidate reference signal (j=0) related to TRP#0; the terminal device detects the reference signal related to TRP#1 Candidate reference signals (j=1), in which the corresponding reference signal q _new,1 for link recovery is selected. q _new,0 and q _new,1 are also included in this BFR report.

For example, for the PUCCH transmission occasion associated with l=0 (Rep#2-1), its power P' ₀ is determined according to q _new,0 ; in addition, l'=0 corresponding to P' ₀ is related to q _{new, 0} corresponds to the j value (0) equal. Specifically, l′=0, q _u =0, q _d =q _new,0 . For the meanings of q _u and q _d , refer to existing standards.

It can be seen from the example in Fig. 9 that when the BFD-RS group with k=0 has a beam failure, and the candidate reference signals j=0,1 related to TRP#0 and TRP#1 are detected, and selected from them are Based on the link recovery reference signals q _new,0 and q _new,1 , the terminal device includes k=0 and j=0,1 in the reported BFR report, and determines the PUCCH associated with l=0 according to q _new,0 The power control parameter P' ₀ used is transmitted.

FIG. 10 is a schematic diagram of an example of PUCCH transmission.

In the example in FIG. 10 , the terminal device detects the two groups of BFD-RSs, and finds that the BFD-RS group whose group ID is 1 satisfies the beam failure condition, which means that TRP#1 fails. At this time, the terminal device sends a beam failure report (BFR report), or beam failure recovery information, to the network device, where the report includes the group ID (k) of the BFD-RS group where the beam failure occurred. In this example, because the terminal device detects that the BFD-RS group whose group ID is 1 fails, k=1. In addition, the terminal device selects the corresponding reference signal q _new,0 for link recovery by detecting the candidate reference signal (j=0) related to TRP#0; the terminal device detects the reference signal related to TRP#1 Candidate reference signals (j=1), in which the corresponding reference signal q _new,1 for link recovery is selected. q _new,0 and q _new,1 are also included in this BFR report.

For example, for the PUCCH transmission occasion associated with l=1 (Rep#2-1), its power P' ₁ is determined according to q _new,1 ; in addition, l'=1 corresponding to P' ₁ is related to q _{new, 1} corresponds to j values (1) equal. Specifically, l′=1, q _u =0, q _d =q _new,1 . For the meanings of q _u and q _d , refer to existing standards.

From the example in Figure 10, it can be seen that when the BFD-RS group with k=1 has a beam failure, and the candidate reference signals j=0,1 related to TRP#0 and TRP#1 are detected, and selected from them Based on the link recovery reference signals q _new,0 and q _new,1 , the terminal device includes k=0 and j=0,1 in the reported BFR report, and determines the PUCCH associated with l=1 according to q _new,1 The power control parameter P' ₀ used is transmitted.

In some embodiments, the value of the above-mentioned first closed-loop power control index is equal to the value of the ID of the second beam failure detection reference signal group; wherein, the ID of the second beam failure detection reference signal group refers to the detected beam The ID(k) of the failed beam failure detection reference signal group does not correspond to the detected beam failure detection reference signal group ID of the candidate reference signal for link recovery.

In the above embodiments, in some implementations, the value of the closed-loop power control index (l') corresponding to the first power control parameter is the same as the detected candidate reference signal ID (q _new ) have the same ID value of the beam failure detection reference signal group.

For example, in the above example in Figure 6, the ID of the beam failure detection reference signal group that detects the beam failure is k=0,1 (link failure occurred in both TRP#0 and TRP#1), and k=0 has a corresponding The detected candidate reference signal for link recovery, that is, q _new,0 , and k=1 has no corresponding detected candidate reference signal for link recovery, then the value of the first closed-loop power control index l is 1, that is, l=1, and the value of the closed-loop power control index l' corresponding to the first power control parameter is 0, that is, l'=0.

That is to say, the terminal device first determines the PUCCH transmission opportunity related to l=1 (for example, the PUCCH transmission opportunity corresponding to Rep#2-2). For Rep#2-2, its power control parameter (first power control parameter) is determined according to q _new,0 ; and, the closed-loop index l' on which Rep#2-2 is sent corresponds to k corresponding to q _new,0 The value (0) of is equal, that is, l'=0. The advantage of this is that when TRP#1 fails, but does not detect the corresponding path for beam recovery; at the same time, TRP#0 detects the corresponding recovery path, at this time, the terminal device can use other The restoration path of the TRP (TRP#0) is used to restore the PUCCH/PUCCH resource associated with TRP#1 (the PUCCH/PUCCH resource associated with l=1).

For another example, in the above example in Figure 8, the ID of the beam failure detection reference signal group that detects the beam failure is k=0,1 (link failure occurred in both TRP#0 and TRP#1), and k=1 has The corresponding detected candidate parameter signal for link recovery, that is, q _new,1 , and k=0 has no corresponding detected candidate parameter signal for link recovery, then the first closed-loop power control index l The value is 0, that is, l=0, and the value of the closed-loop power control index l' corresponding to the first power control parameter is 1, that is, l'=1.

That is to say, the terminal device first determines the PUCCH transmission opportunity related to l=0 (for example, the PUCCH transmission opportunity corresponding to Rep#2-1). For Rep#2-1, its power control parameter (first power control parameter) is determined according to q _new,1 ; and, the closed-loop index l' on which Rep#2-1 is sent corresponds to k corresponding to q _new,1 The value (1) of is equal, that is, l'=1. The advantage of this is that when TRP#0 fails, but does not detect the corresponding path for beam recovery; at the same time, TRP#1 detects the corresponding recovery path, at this time, the terminal device can use other The restoration path of the TRP (TRP#1) is used to restore the PUCCH/PUCCH resource associated with TRP#0 (the PUCCH/PUCCH resource associated with 1=0).

In the above embodiments, in some implementations, the value of the closed-loop power control index (l') corresponding to the first power control parameter is the same as the detected candidate reference signal ID (q _new ) have the same value of the ID(j) of the candidate reference signal group used for link recovery. In other words, the beam failure recovery information also includes the ID(j) of the candidate reference signal group corresponding to the detected (identified) candidate reference signal ID(q _new ) for link recovery; The value of the closed-loop power control index (l′) corresponding to a power control parameter is the same as the value of the ID(j) of the candidate reference signal group in the beam failure recovery information.

For example, in the example shown in FIG. 11 below, the ID of the beam failure detection reference signal group that detects beam failure is k=0 (that is, beam failure occurs in TRP#0), however, k=0 (TRP#0) does not The corresponding detected candidate reference signal for link recovery; in addition, no beam failure is detected in TRP#1, and in the corresponding candidate reference signal group (j=1), there is a corresponding detected candidate reference signal for link recovery The subsequent reference signal q _new,1 for road recovery. Wherein, the value of l is equal to the value of k (0), that is, l=0. Then determine the first power control parameter P' ₀ used by the PUCCH related to l=0 according to q _new,1 . Wherein, the closed-loop power control index l' corresponding to P' ₀ is equal to the value of j (1) corresponding to q _new,1 , that is, l'=1.

For another example, in the example shown in Figure 12 below, the ID of the beam failure detection reference signal group that detects beam failure is k=1 (that is, beam failure has occurred in TRP#1), however, k=1 (TRP#1) There is no corresponding detected candidate reference signal for link recovery; in addition, no beam failure is detected at TRP#0, and in the corresponding candidate reference signal group (j=0), there is a corresponding detected candidate reference signal for Subsequent reference signal q _new,0 for link recovery, wherein the value of l is equal to the value of k (1), that is, l=1. Then determine the first power control parameter P' ₁ used by the PUCCH related to l=1 according to q _new,0 . Wherein, the closed-loop power control index l' corresponding to _P'1 is equal to the value of j (0) corresponding to q _new,0 , that is, l'=0.

The examples in Fig. 11 and Fig. 12 are further described below.

In the examples shown in Figure 11 and Figure 12, in a cell, terminal equipment is configured with two sets of beam failure detection reference signals (beam failure detection reference signal, BFD-RS), ID (k) is 0 and 1, respectively Corresponds to TRP#0 and TRP#1. In addition, the terminal equipment is also configured with two sets of candidate reference signals (candidate reference signals), ID(j) are 0 and 1, corresponding to TRP#0 and TRP#1, these candidate reference signals are used to determine the candidate for beam recovery Beam (identifying the candidate beams for recovery). In addition, similar to the examples in Figures 2 to 8, the terminal device is also configured with uplink multi-TRP PUCCH transmission, that is, at least one PUCCH resource is associated with two sets of power control references, and the two sets of power control parameters correspond to different Closed loop index.

FIG. 11 is a schematic diagram of an example of PUSCH transmission.

In the example in FIG. 11 , the terminal device detects these two groups of BFD-RSs, and finds that the BFD-RS group whose group ID is 0 satisfies the beam failure condition, which means that TRP#0 has failed. At this time, the terminal device sends a beam failure report (BFR report), or beam failure recovery information, to the network device, where the report includes the group ID (k) of the BFD-RS group where the beam failure occurred. In this example, because the terminal device detects that the BFD-RS group whose group ID is 0 fails, k=0. In addition, by detecting the candidate reference signal related to TRP#0 (j=0), the terminal device does not find a reference signal that can be used for link recovery; the terminal device detects the candidate reference signal related to TRP#1 (j=1) , in which the corresponding reference signal q _new,1 for link recovery is selected. j=1 is also included in this BFR report.

For example, the terminal device determines l according to k, that is, l=k=0. For the PUCCH transmission occasion associated with l=0 (Rep#2-1), its power P' ₁ is determined according to q _new,1 ; in addition, the closed-loop power control index l' corresponding to P' ₀ is related to q _new,1 The corresponding values of j (1) are equal. Specifically, P' ₁ corresponds to l'=1, q _u =0, q _d =q _new,1 . For the meanings of q _u and q _d , refer to existing standards.

From the example in Figure 11, it can be seen that when the BFD-RS group k=0 has a beam failure, and the candidate reference signal j=1 related to TRP#1 is detected, and the reference signal for link recovery is selected from it Signal q _new,1 , the terminal device includes k=0 and j=1 in the reported BFR report, and determines the power control parameter P' ₁ used for PUCCH transmission associated with l=0 according to q _new ,1.

FIG. 12 is a schematic diagram of another example of PUSCH transmission.

In the example in FIG. 12 , the terminal device detects the two groups of BFD-RSs, and finds that the BFD-RS group whose group ID is 1 satisfies the beam failure condition, which means that TRP#1 fails. At this time, the terminal device sends a beam failure report (BFR report), or beam failure recovery information, to the network device, where the report includes the group ID (k) of the BFD-RS group where the beam failure occurred. In this example, because the terminal device detects that the BFD-RS group whose group ID is 1 fails, k=1. In addition, the terminal device finds no reference signal that can be used for link recovery by detecting the candidate reference signal (j=1) related to TRP#1; the terminal device detects the candidate reference signal (j=0) related to TRP#0 , in which the corresponding reference signal q _new,0 for link recovery is selected. j=0 is also included in this BFR report.

For example, the terminal device determines l according to k, that is, l=k=1. For the PUCCH transmission occasion associated with l=1 (Rep#2-2), its power P' ₀ is determined according to q _new,0 ; in addition, the closed-loop power control index l' corresponding to P' ₁ is related to q _new,0 The corresponding values of j (1) are equal. Specifically, P' ₀ corresponds to l'=0, q _u =0, q _d =q _new,0 . For the meanings of q _u and q _d , refer to existing standards.

From the example in Figure 12, it can be seen that when the beam failure occurs in the BFD-RS group k=1, and the candidate reference signal j=0 related to TRP#0 is detected, and the reference signal for link recovery is selected from it Signal q _new,0 , the terminal device includes k=1 and j=0 in the reported BFR report, and determines the power control parameter P' ₀ used for PUCCH transmission associated with l=1 according to q _new, 0.

In the embodiment of the present application, the aforementioned cell may be a serving cell (serving cell), but the present application is not limited thereto, and the aforementioned cell may also be a non-serving cell (non-serving cell).

In this embodiment of the present application, the aforementioned cell may be a primary cell (PCell), or may be a PUCCH secondary cell (PUCCH-SCell). This application is not limited thereto.

In the embodiment of the present application, the above-mentioned certain time interval may be 28 symbols. But the present application is not limited thereto.

It should be noted that the above embodiments are only illustrative examples of the embodiments of the present application, but the present application is not limited thereto, and appropriate modifications can also be made on the basis of the above embodiments. For example, each of the above-mentioned embodiments may be used alone, or one or more of the above-mentioned embodiments may be combined.

In addition, the above only describes the steps or processes related to the present application, but the present application is not limited thereto. The method in the embodiment of the present application may also include other steps or processes, and for the specific content of these steps or processes, reference may be made to related technologies.

According to the method of the embodiment of the present application, in a multi-TRP scenario, after beam failure occurs in one or more TRPs, the power control parameters of the PUCCH can be reset/updated accordingly, so as to realize the recovery of the PUCCH.

Embodiments of the second aspect

An embodiment of the present application provides a signal sending apparatus, for example, the apparatus may be a terminal device, or may be one or some components or components configured in the terminal device.

Fig. 13 is a schematic diagram of the signal sending device of the embodiment of the present application. Since the principle of solving the problem of this device is the same as the method of the embodiment of the first aspect, its specific implementation can refer to the implementation of the method of the embodiment of the first aspect , where the content is the same will not be repeated.

As shown in Figure 13, the signal sending device 1300 in the embodiment of the present application includes:

A sending unit 1301, which sends beam failure recovery information to the network device, where the beam failure recovery information includes the ID (k) of the beam failure detection reference signal group that detects the beam failure and the detected (identified) beam failure detection reference signal group for link recovery. Candidate reference signal ID(q _new ), wherein the terminal device is configured with two beam failure detection reference signal groups in one cell;

A determining unit 1302, after the terminal device receives the feedback from the network device for the beam failure recovery information, after a certain time interval, according to the detected candidate reference signal ID for link recovery (q _new ) Determine the first power control parameter used to transmit the PUCCH related to the first closed-loop power control index (l) in the cell, where the first closed-loop power control index (l) is related to the detected ID(k) correlation of beam failure detection reference signal groups for beam failures.

In some embodiments, the beam failure detection reference signal group in which beam failure is detected means that the radio link quality corresponding to all first reference signal resource configurations in the beam failure detection reference signal group is lower than a predefined Threshold (Q _{out, LR} ); wherein, the first reference signal resource configuration refers to a reference signal resource configuration used by the terminal device for assessing (assess) radio link quality.

In some embodiments, the correlation between the first closed-loop power control index (l) and the group ID (k) of the beam failure detection reference signal for which beam failure is detected means that the first closed-loop power control index (l ) is equal to at least one of the group ID values of the beam failure detection reference signal for which the beam failure is detected.

In some embodiments, the value of the first closed-loop power control index (1) is equal to the ID value of the first beam failure detection reference signal group; wherein, the ID of the first beam failure detection reference signal group refers to the The ID(k) of the beam failure detection reference signal group for which the beam failure is detected corresponds to the ID of the beam failure detection reference signal group for the detected candidate reference signal for link recovery.

In the above embodiments, in some embodiments, the beam failure recovery information further includes the candidate reference signal group corresponding to the detected (identified) candidate reference signal ID (q _new ) for link recovery ID (j); the ID (k) of the beam failure detection reference signal group that detects the beam failure has a corresponding detected beam failure detection reference signal group ID for the candidate reference signal for link recovery, It refers to the ID of the beam failure detection reference signal group that is the same as at least one of the IDs (j) of the candidate reference signal group among the IDs (k) of the beam failure detection reference signal group in which the beam failure is detected.

In some embodiments, the value of the first closed-loop power control index (1) is equal to the ID value of the second beam failure detection reference signal group; wherein, the ID of the second beam failure detection reference signal group refers to the The ID(k) of the beam failure detection reference signal group for which the beam failure is detected does not correspond to the ID of the detected beam failure detection reference signal group for the candidate reference signal for link recovery.

In the above embodiments, in some embodiments, the value of the closed-loop power control index (l') corresponding to the first power control parameter is the same as the detected candidate reference signal ID (q _new ) have the same ID value of the beam failure detection reference signal group.

In the above embodiments, in some embodiments, the value of the closed-loop power control index (l') corresponding to the first power control parameter is the same as the detected candidate reference signal ID (q _new ) have the same ID value of the candidate reference signal group used for link recovery.

In the above embodiments, in some embodiments, the beam failure recovery information further includes the candidate reference signal group corresponding to the detected (identified) candidate reference signal ID (q _new ) for link recovery ID(j); the value of the closed-loop power control index (l') corresponding to the first power control parameter is the same as the value of the ID(j) of the candidate reference signal group in the beam failure recovery information.

In some embodiments, the PUCCH related to the first closed-loop power control index refers to that the PUCCH resource for sending the PUCCH is related to the first closed-loop power control index.

In the above embodiments, in some embodiments, the correlation between the PUCCH resource and the first closed-loop power index means that the PUCCH resource is indicated with a second closed-loop power control index; wherein, the first closed-loop power The control index is the same as the second closed-loop power control index.

In the above embodiments, in some embodiments, the correlation between the PUCCH resource and the first closed-loop power index means that the PUCCH resource is indicated with a spatial relationship; wherein the spatial relationship includes the second closed-loop power index Control index; the first closed-loop power control index is the same as the second closed-loop power control index.

In some embodiments, the PUCCH resource on which the PUCCH is transmitted is associated with a set of power control parameters.

In some embodiments, the PUCCH resource for transmitting the PUCCH is associated with two sets of power control parameters.

In some embodiments, the two sets of power control parameters correspond to different close loop indexes.

In some embodiments, the two sets of power control parameters correspond to the same close loop index.

In some embodiments, the PUCCH related to the first closed-loop power control index refers to the PUCCH whose PUCCH transmission occasion (PUCCH transmission occasion) corresponds to the first closed-loop power control index.

In the above embodiments, in some embodiments, the corresponding relationship between a PUCCH transmission occasion (PUCCH transmission occasion) and a closed-loop power control index is determined according to RRC or MAC-CE indication signaling related to PUCCH.

In the above embodiments, in some embodiments, the RRC or MAC-CE indication signaling is received before the beam failure recovery information is fed back.

In some embodiments, the cell refers to a serving cell or a non-serving cell.

In some embodiments, the cell refers to a primary cell (PCell) or a PUCCH secondary cell (PUCCH-SCell).

In some embodiments, the certain time interval is 28 symbols.

It should be noted that the above only describes the components or modules related to the present application, but the present application is not limited thereto. The signal sending apparatus 1300 in the embodiment of the present application may further include other components or modules, and for specific content of these components or modules, reference may be made to related technologies.

In addition, for the sake of simplicity, FIG. 13 only exemplarily shows the connection relationship or signal direction between various components or modules, but it should be clear to those skilled in the art that various related technologies such as bus connection can be used. The above-mentioned components or modules may be implemented by hardware facilities such as processors, memories, transmitters, receivers, etc.; the implementation of the present application is not limited thereto.

According to the device of the embodiment of the present application, in the multi-TRP scenario, the PUCCH power parameter can be reset after beam failure occurs, so as to realize the recovery of the PUCCH.

Embodiments of the third aspect

The embodiment of the present application provides a communication system. FIG. 14 is a schematic diagram of the communication system of the embodiment of the present application. As shown in FIG. 14, the communication system 1400 includes a network device 1401 and a terminal device 1402. For simplicity, FIG. A terminal device and a network device are used as an example for illustration, but this embodiment of the present application is not limited thereto.

In this embodiment of the present application, existing services or service transmissions that may be implemented in the future may be performed between the network device 1401 and the terminal device 1402 . For example, these services may include, but are not limited to: enhanced mobile broadband (eMBB), massive machine-type communication (mMTC), highly reliable low-latency communication (URLLC), and vehicle-to-everything (V2X) communication, etc.

In some embodiments, the terminal device 1402 is configured to: send beam failure recovery information to the network device 1401, where the beam failure recovery information includes the ID(k) of the beam failure detection reference signal group and the detected (identified) candidate reference signal ID (q _new ) for link recovery, wherein, the terminal device is configured with two beam failure detection reference signal groups in one cell; after receiving the network device 1401 for After the beam failure recovery information is fed back, after a certain time interval, determine the transmission and first closed-loop power control index in the cell according to the detected candidate reference signal ID(q _new ) for link recovery (1) The first power control parameter used by the relevant PUCCH, wherein the first closed-loop power control index (1) is related to the ID (k) of the beam failure detection reference signal group that detects the beam failure; the network The device 1401 is configured to: receive the beam failure recovery information sent by the terminal device 1402, and send feedback on the beam failure recovery information to the terminal device 1402.

In the foregoing embodiments, the present application does not make limitations on the content related to the network device 1401 . Relevant content about the terminal device 1402 is the same as the method in the embodiment of the first aspect, and description is omitted here.

The embodiment of the present application further provides a terminal device, and the terminal device may be, for example, a UE, but the present application is not limited thereto, and may also be other devices.

Fig. 15 is a schematic diagram of a terminal device according to an embodiment of the present application. As shown in FIG. 15 , the terminal device 1500 may include a processor 1501 and a memory 1502 ; the memory 1502 stores data and programs, and is coupled to the processor 1501 . It is worth noting that this figure is exemplary; other types of structures may also be used in addition to or instead of this structure to implement telecommunication functions or other functions.

For example, the processor 1501 may be configured to execute a program to implement the method described in the embodiment of the first aspect.

As shown in FIG. 15 , the terminal device 1500 may further include: a communication module 1503 , an input unit 1504 , a display 1505 , and a power supply 1506 . Wherein, the functions of the above components are similar to those of the prior art, and will not be repeated here. It should be noted that the terminal device 1500 does not necessarily include all the components shown in FIG. have technology.

An embodiment of the present application further provides a computer-readable program, wherein when the program is executed in a terminal device, the program causes a computer to execute the method described in the embodiment of the first aspect in the terminal device.

An embodiment of the present application further provides a storage medium storing a computer-readable program, wherein the computer-readable program enables a computer to execute the method described in the embodiment of the first aspect in a terminal device.

The above devices and methods in this application can be implemented by hardware, or by combining hardware and software. The present application relates to a computer-readable program that, when executed by a logic component, enables the logic component to realize the above-mentioned device or constituent component, or enables the logic component to realize the above-mentioned various methods or steps. Logic components such as field programmable logic components, microprocessors, processors used in computers, and the like. The present application also relates to storage media for storing the above programs, such as hard disks, magnetic disks, optical disks, DVDs, flash memories, and the like.

The method/device described in conjunction with the embodiments of the present application may be directly embodied as hardware, a software module executed by a processor, or a combination of both. For example, one or more of the functional block diagrams shown in the figure and/or one or more combinations of the functional block diagrams may correspond to each software module or each hardware module of the computer program flow. These software modules may respectively correspond to the steps shown in the figure. These hardware modules, for example, can be realized by solidifying these software modules by using a Field Programmable Gate Array (FPGA).

A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, removable disk, CD-ROM or any other form of storage medium known in the art. A storage medium can be coupled to the processor such that the processor can read information from, and write information to, the storage medium, or it can be an integral part of the processor. The processor and storage medium can be located in the ASIC. The software module can be stored in the memory of the mobile terminal, or can be stored in a memory card that can be inserted into the mobile terminal. For example, if the device (such as a mobile terminal) adopts a large-capacity MEGA-SIM card or a large-capacity flash memory device, the software module can be stored in the MEGA-SIM card or large-capacity flash memory device.

One or more of the functional blocks described in the accompanying drawings and/or one or more combinations of the functional blocks can be implemented as a general-purpose processor, a digital signal processor (DSP) for performing the functions described in this application ), application specific integrated circuits (ASICs), field programmable gate arrays (FPGAs) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, or any suitable combination thereof. One or more of the functional blocks described in the drawings and/or one or more combinations of the functional blocks can also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors processor, one or more microprocessors in communication with a DSP, or any other such configuration.

The present application has been described above in conjunction with specific implementation manners, but those skilled in the art should be clear that these descriptions are exemplary rather than limiting the protection scope of the present application. Those skilled in the art can make various variations and modifications to this application according to the spirit and principles of this application, and these variations and modifications are also within the scope of this application.

Regarding the above-mentioned implementation mode disclosed in this embodiment, the following additional notes are also disclosed:

1. A signal transmission method, wherein the method comprises:

The terminal device sends beam failure recovery information to the network device, and the beam failure recovery information includes the ID (k) of the beam failure detection reference signal group that detects the beam failure and the detected (identified) candidate reference signal for link recovery Signal ID(q _new ), wherein the terminal device is configured with two beam failure detection reference signal groups in one cell;

After receiving the feedback from the network device on the beam failure recovery information, the terminal device determines according to the detected candidate reference signal ID(q _new ) for link recovery after a certain time interval In the cell, the first power control parameter used by the PUCCH related to the first closed-loop power control index (1) is sent, wherein the first closed-loop power control index (1) is related to the detected beam failure The ID(k) of the detection reference signal group is correlated.

1a. The method according to appendix 1, wherein,

The beam failure detection reference signal group for which beam failure is detected means that the wireless link quality corresponding to all first reference signal resource configurations in the beam failure detection reference signal group is lower than a predefined threshold (Q _{out, LR} );

Wherein, the first reference signal resource configuration refers to a reference signal resource configuration used by the terminal device to assess (assess) radio link quality.

2. The method according to appendix 1, wherein,

The correlation between the first closed-loop power control index (l) and the group ID (k) of the beam failure detection reference signal for which the beam failure is detected means that,

The value of the first closed-loop power control index is equal to at least one of the group ID values of the beam failure detection reference signal in which the beam failure is detected.

3. The method according to appendix 1, wherein,

The value of the first closed-loop power control index (1) is equal to the ID value of the first beam failure detection reference signal group; wherein, the ID of the first beam failure detection reference signal group refers to,

The ID(k) of the beam failure detection reference signal group for which the beam failure is detected corresponds to the ID of the detected beam failure detection reference signal group of the candidate reference signal for link restoration.

4. The method according to appendix 3, wherein,

The beam failure recovery information also includes the ID(j) of the candidate reference signal group corresponding to the detected (identified) candidate reference signal ID(q _new ) for link recovery;

The ID(k) of the beam failure detection reference signal group for which the beam failure is detected has a corresponding ID of the beam failure detection reference signal group for the detected candidate reference signal for link recovery, which means,

IDs of beam failure detection reference signal groups that are identical to at least one of the IDs (j) of the candidate reference signal groups among the IDs (k) of beam failure detection reference signal groups for which beam failure is detected.

5. The method according to appendix 1, wherein,

The value of the first closed-loop power control index is equal to the value of the ID of the second beam failure detection reference signal group; wherein, the ID of the second beam failure detection reference signal group refers to,

The ID(k) of the beam failure detection reference signal group for which the beam failure is detected does not correspond to the ID of the detected beam failure detection reference signal group of the candidate reference signal for link restoration.

6. The method according to appendix 3 or appendix 5, wherein,

The value of the closed-loop power control index (l') corresponding to the first power control parameter and the beam failure detection reference signal group corresponding to the detected candidate reference signal ID (q _new ) for link recovery The value of ID is the same.

7. The method according to appendix 3 or appendix 5, wherein,

The value of the closed-loop power control index (l') corresponding to the first power control parameter and the candidate reference signal for link recovery where the detected candidate reference signal ID (q _new ) for link recovery is located The ID values of the signal groups are the same.

8. The method according to appendix 4 or appendix 5, wherein,

The value of the closed-loop power control index (l') corresponding to the first power control parameter is the same as the value of the ID(j) of the candidate reference signal group in the beam failure recovery information.

9. The method according to appendix 1, wherein,

The PUCCH related to the first closed-loop power control index refers to that the PUCCH resource for sending the PUCCH is related to the first closed-loop power control index.

10. The method according to appendix 9, wherein,

The correlation between the PUCCH resource and the first closed-loop power index means that the PUCCH resource is indicated with a second closed-loop power control index; wherein, the first closed-loop power control index is the same as the second closed-loop power control index .

11. The method according to appendix 9, wherein,

The correlation between the PUCCH resource and the first closed-loop power index means that the PUCCH resource is indicated with a spatial relationship; wherein,

the spatial relationship includes a second closed-loop power control index;

The first closed-loop power control index is the same as the second closed-loop power control index.

12. The method according to appendix 1, wherein,

The PUCCH resource for sending the PUCCH is associated with a set of power control parameters.

13. The method according to appendix 1, wherein,

The PUCCH resource for sending the PUCCH is associated with two sets of power control parameters.

14. The method according to appendix 13, wherein,

The two sets of power control parameters correspond to different closed loop indexes.

15. The method according to appendix 13, wherein,

The two sets of power control parameters correspond to the same closed loop index.

16. The method according to appendix 1, wherein,

The PUCCH related to the first closed-loop power control index refers to the PUCCH whose PUCCH transmission occasion (PUCCH transmission occasion) corresponds to the first closed-loop power control index.

17. The method according to appendix 16, wherein,

The corresponding relationship between a PUCCH transmission occasion (PUCCH transmission occasion) and a closed-loop power control index is determined according to the RRC or MAC-CE indication signaling related to the PUCCH.

18. The method according to appendix 17, wherein,

The RRC or MAC-CE indication signaling is received before the beam failure recovery information is fed back.

19. The method according to appendix 1, wherein,

The cell refers to a serving cell or a non-serving cell.

20. The method according to appendix 1, wherein,

The cell refers to a primary cell (PCell) or a PUCCH secondary cell (PUCCH-SCell).

21. The method according to appendix 1, wherein,

The certain time interval is 28 symbols.

22. A terminal device, comprising a memory and a processor, the memory stores a computer program, and the processor is configured to execute the computer program to implement the method described in any one of Supplements 1 to 21.

23. A communication system comprising a terminal device and a network device, wherein,

The end device is configured to:

Send beam failure recovery information to the network device, the beam failure recovery information includes the ID (k) of the beam failure detection reference signal group that detects the beam failure and the detected (identified) candidate reference signal ID for link recovery (q _new ), wherein, the terminal device is configured with two beam failure detection reference signal groups in one cell;

After receiving the feedback from the network device on the beam failure recovery information, after a certain time interval, according to the detected candidate reference signal ID(q _new ) for link recovery, determine the Sending the first power control parameter used by the PUCCH related to the first closed-loop power control index (l), wherein the first closed-loop power control index (l) and the beam failure detection reference signal group for which the beam failure is detected The ID(k) is related;

The network device is configured to: receive the beam failure recovery information sent by the terminal device, and send feedback on the beam failure recovery information to the terminal device.

Claims

A signal sending device configured in a terminal device, wherein the device includes:

A sending unit, which sends beam failure recovery information to the network device, where the beam failure recovery information includes the ID (k) of the beam failure detection reference signal group that detects the beam failure and the detected (identified) beam failure detection reference signal group (identified) for link recovery. Candidate reference signal ID(q new ), wherein the terminal device is configured with two beam failure detection reference signal groups in one cell;

A determination unit, after receiving the feedback from the network device for the beam failure recovery information, after a certain time interval, determine according to the detected candidate reference signal ID(q new ) for link recovery In the cell, the first power control parameter used by the PUCCH related to the first closed-loop power control index (1) is sent, wherein the first closed-loop power control index (1) is related to the detected beam failure The ID(k) of the detection reference signal group is correlated.
The device according to claim 1, wherein,

The beam failure detection reference signal group for which beam failure is detected means that the wireless link quality corresponding to all first reference signal resource configurations in the beam failure detection reference signal group is lower than a predefined threshold (Q out, LR );

Wherein, the first reference signal resource configuration refers to a reference signal resource configuration used by the terminal device to assess (assess) radio link quality.
The device according to claim 1, wherein,

The correlation between the first closed-loop power control index (l) and the group ID (k) of the beam failure detection reference signal for which the beam failure is detected means that,

The value of the first closed-loop power control index is equal to at least one of the group ID values of the beam failure detection reference signal in which the beam failure is detected.
The device according to claim 1, wherein,

The value of the first closed-loop power control index (1) is equal to the ID value of the first beam failure detection reference signal group; wherein, the ID of the first beam failure detection reference signal group refers to,

The ID(k) of the beam failure detection reference signal group for which the beam failure is detected corresponds to the ID of the detected beam failure detection reference signal group of the candidate reference signal for link restoration.
The apparatus according to claim 4, wherein,

The beam failure recovery information also includes the ID(j) of the candidate reference signal group corresponding to the detected (identified) candidate reference signal ID(q new ) for link recovery;

The ID(k) of the beam failure detection reference signal group for which the beam failure is detected has a corresponding ID of the beam failure detection reference signal group for the detected candidate reference signal for link recovery, which means,

IDs of beam failure detection reference signal groups that are identical to at least one of the IDs (j) of the candidate reference signal groups among the IDs (k) of beam failure detection reference signal groups for which beam failure is detected.
The device according to claim 1, wherein,

The value of the first closed-loop power control index is equal to the value of the ID of the second beam failure detection reference signal group; wherein, the ID of the second beam failure detection reference signal group refers to,

The ID(k) of the beam failure detection reference signal group for which the beam failure is detected does not correspond to the ID of the detected beam failure detection reference signal group of the candidate reference signal for link restoration.
The apparatus of claim 6, wherein,

The value of the closed-loop power control index (l') corresponding to the first power control parameter and the beam failure detection reference signal group corresponding to the detected candidate reference signal ID (q new ) for link recovery The value of ID is the same.
The apparatus of claim 6, wherein,

The value of the closed-loop power control index (l') corresponding to the first power control parameter and the candidate reference signal for link recovery where the detected candidate reference signal ID (q new ) for link recovery is located The ID values of the signal groups are the same.
The apparatus of claim 6, wherein,

The beam failure recovery information also includes the ID(j) of the candidate reference signal group corresponding to the detected (identified) candidate reference signal ID(q new ) for link recovery;

The value of the closed-loop power control index (l') corresponding to the first power control parameter is the same as the value of the ID(j) of the candidate reference signal group in the beam failure recovery information.
The device according to claim 1, wherein,

The PUCCH related to the first closed-loop power control index refers to that the PUCCH resource for sending the PUCCH is related to the first closed-loop power control index.
The apparatus of claim 10, wherein,

The correlation between the PUCCH resource and the first closed-loop power index means that the PUCCH resource is indicated with a second closed-loop power control index; wherein, the first closed-loop power control index is the same as the second closed-loop power control index .
The apparatus of claim 10, wherein,

The correlation between the PUCCH resource and the first closed-loop power index means that the PUCCH resource is indicated with a spatial relationship; wherein,

the spatial relationship includes a second closed-loop power control index;

The first closed-loop power control index is the same as the second closed-loop power control index.
The device according to claim 1, wherein,

The PUCCH resource for sending the PUCCH is associated with a set of power control parameters.
The device according to claim 1, wherein,

The PUCCH resource for sending the PUCCH is associated with two sets of power control parameters.
The apparatus of claim 14, wherein,

The two sets of power control parameters correspond to different closed loop indexes.
The apparatus of claim 14, wherein,

The two sets of power control parameters correspond to the same closed loop index.
The device according to claim 1, wherein,

The PUCCH related to the first closed-loop power control index refers to the PUCCH whose PUCCH transmission occasion (PUCCH transmission occasion) corresponds to the first closed-loop power control index.
The apparatus of claim 17, wherein,

The corresponding relationship between a PUCCH transmission occasion (PUCCH transmission occasion) and a closed-loop power control index is determined according to the RRC or MAC-CE indication signaling related to the PUCCH.
The apparatus of claim 18, wherein,

The RRC or MAC-CE indication signaling is received before the beam failure recovery information is fed back.
The device according to claim 1, wherein,

The cell refers to a serving cell or a non-serving cell.