Electronic device and method for wireless communication, and computer-readable storage medium

Abstract

An electronic device and method for wireless communication, and a computer-readable storage medium are provided. The electronic device comprises a processing circuit configured to determine a first non-periodic sounding reference signal resource, the beam transmission direction of which is updated by a first MAC CE signaling; and to re-determine a path loss reference signal for the first non-periodic sounding reference signal resource based on beam transmission direction information of the first non-periodic sounding reference signal resource in the first MAC CE signaling or a second MAC CE signaling.

Description

Technology Field

[0001] This application claims priority to Chinese patent application No. 201910967995.1, titled "ELECTRONIC DEVICE AND METHOD FOR WIRELESS COMMUNICATION, AND COMPUTER-READABLE STORAGE MEDIUM," filed with the CNIPA (China National Intellectual Property Administration) on October 12, 2019, the entirety of which is incorporated herein by reference.

[0002] Technology Field

[0003] The present disclosure relates to the technical field of wireless communication, and in particular to resource allocation of a Sounding Reference Signal (SRS) in a wireless communication system. More specifically, the present disclosure relates to an electronic device and method for wireless communication and a computer-readable storage medium. Background Technology

[0004] In the standardization of 3GPP Rel. 16, the beam emission direction for aperiodic SRS is configured via radio resource control (RRC) signaling. To increase the flexibility in configuring the beam emission direction for a signal, the beam emission direction for a single aperiodic SRS resource can be updated via MAC CE signaling.

[0005] Additionally, the base station may configure multiple sets of SRS resources for the UE (user equipment). Each set of SRS resources may include multiple SRS resources and uplink power control parameters for these SRS resources.

[0006] The following is an overview of the present disclosure simply to provide a basic understanding of some aspects of the present disclosure. It should be understood that this overview is not an exhaustive summary of the present disclosure. It is not intended to determine any material or important part of the present disclosure, nor is it intended to limit the scope of the present disclosure. The purpose of this overview is merely to provide some concepts in a simplified manner and to serve as an introduction to the more detailed description that follows.

[0007] According to an embodiment of the present disclosure, an electronic device for wireless communication is provided. Such an electronic device comprises a processing circuit. Such a processing circuit is configured to determine a first non-periodic SRS resource whose beam emission direction is updated by a first MAC CE signaling; and to re-determine a path loss reference signal (PL RS) for the first non-periodic SRS resource based on information regarding the beam emission direction of the first non-periodic SRS resource in the first MAC CE signaling or a second MAC CE signaling.

[0008] According to another aspect of the present disclosure, a method for wireless communication is provided. The method comprises: determining a first non-periodic SRS resource whose beam emission direction is updated by a first MAC CE signaling; and re-determining a PL RS for the first non-periodic SRS resource based on information of the beam emission direction of the first non-periodic SRS resource in the first MAC CE signaling or a second MAC CE signaling.

[0009] According to an embodiment of the present disclosure, an electronic device for wireless communication is provided. The electronic device comprises a processing circuit. The processing circuit is configured to determine a method for a user device to redetermine a PL RS for a first aperiodic SRS resource, wherein the beam emission direction is updated by a first MAC CE signaling; and to determine further operations to be performed based on the determined method.

[0010] According to another aspect of the present disclosure, a method for wireless communication is provided. The method comprises: a step of determining a method for a user device to redetermine a PL RS for a first aperiodic SRS resource, wherein the beam emission direction is updated by a first MAC CE signaling; and a step of determining additional operations to be performed based on the determined method.

[0011] According to other embodiments of the present disclosure, computer program codes and computer program products for implementing the methods for wireless communication described above, and a computer-readable storage medium on which computer program codes for implementing the methods for wireless communication described above are recorded are further provided.

[0012] According to the electronic device and method of the embodiments of the present disclosure, a PL RS for a first non-periodic SRS resource, in which the beam emission direction is updated by a first MAC CE signaling, is updated, and an appropriate PL RS for the first non-periodic SRS resource can be configured, thereby accurately determining the uplink emission power for the SRS.

[0013] These and other advantages of the present disclosure will become more apparent from the detailed illustration of preferred embodiments of the present disclosure together with the accompanying drawings below. Brief explanation of the drawing

[0014] To further present the above and other advantages and features of the present disclosure, a detailed description is taken below in conjunction with the accompanying drawings in which the same or similar reference numerals designate the same or similar components. The accompanying drawings, together with the detailed description below, are incorporated into and form part of the present specification. It should be noted that the accompanying drawings merely illustrate typical embodiments of the present disclosure by example and should not be interpreted as a limitation on the scope of the present disclosure. In the accompanying drawings: Figure 1 illustrates a schematic example of updating the beam emission direction of a non-periodic SRS resource in an SRS resource set by MAC CE signaling. FIG. 2 is a block diagram illustrating functional modules of an electronic device for wireless communication according to an embodiment of the present disclosure. FIG. 3 schematically illustrates an example of a method for redetermining PL RS for a first non-periodic SRS resource. FIG. 4 schematically illustrates another example of a method for redetermining PL RS for a first non-periodic SRS resource. FIG. 5 schematically illustrates another example of a method for redetermining PL RS for a first non-periodic SRS resource. FIG. 6 schematically illustrates another example of a method for redetermining PL RS for a first non-periodic SRS resource. FIG. 7 schematically illustrates another example of a method for redetermining PL RS for a first non-periodic SRS resource. FIG. 8 is a block diagram illustrating functional modules of an electronic device for wireless communication according to another embodiment of the present disclosure. FIG. 9 is a flowchart of a method for wireless communication according to an embodiment of the present disclosure. FIG. 10 is a flowchart of a method for wireless communication according to another embodiment of the present disclosure. FIG. 11 is a block diagram illustrating a first example of an exemplary configuration of an eNB or gNB to which the technology according to the present disclosure may be applied. FIG. 12 is a block diagram illustrating a second example of an exemplary configuration of an eNB or gNB to which the technology according to the present disclosure may be applied. FIG. 13 is a block diagram illustrating an exemplary configuration of a smartphone to which the technology according to the present disclosure can be applied. FIG. 14 is a block diagram illustrating an exemplary configuration of an automobile navigation device to which the technology according to the present disclosure can be applied. FIG. 15 is a block diagram of an exemplary block diagram illustrating the structure of a general-purpose personal computer capable of realizing a method and / or device and / or system according to embodiments of the present disclosure. Specific details for implementing the invention

[0015] Hereinafter, exemplary embodiments of the present disclosure will be described together with the accompanying drawings. For the purposes of brevity and clarity, not all features of the embodiments are described herein. However, it should be understood that, for example, depending on system and business constraints, a number of specific decisions regarding the embodiments must be made in the process of developing any such embodiment to achieve the developer's specific purpose, and that these constraints may change as the embodiments differ. Furthermore, it should also be understood that while development work may be very complex and time-consuming, to those skilled in the art who benefit from the present disclosure, such development work is merely routine work.

[0016] It should also be noted that, in order to avoid obscuring the present disclosure due to unnecessary details, only device structures and / or processing steps closely related to the solution according to the present disclosure are illustrated in the accompanying drawings, and other details having little relation to the present disclosure are omitted.

[0017] As described above, the beam emission direction of a specific aperiodic SRS resource can be updated via MAC CE signaling. The information regarding the beam emission direction pertains to a single aperiodic SRS resource. For example, this information includes spatial relationships or spatial relationship information, such as information on a downlink reference signal, like the ID (identifier) ​​of a CSI-RS (Channel State Information Reference Signal) or SSB (synchronization signal block), or information on an uplink reference signal, like the ID of another SRS resource.

[0018] In addition, uplink power control parameters for SRS resources, such as pathlossReferenceRS, alpha, and p0, are configured as units of the SRS resource set. For example, pathlossReferenceRS represents a periodic downlink reference signal, such as a periodic CSI-RSS or SSB. The UE measures the received power of pathlossReferenceRS, i.e., the reference signal receiving power (RSRP), and determines the transmit power of pathlossReferenceRS (hereinafter referred to as "PL RS"), thereby enabling the calculation of the channel's uplink path loss and downlink path loss in the beam direction. These path losses can be used to adjust the uplink emitted power of the SRS.

[0019] Therefore, when the beam emission direction of an aperiodic SRS resource is updated via MAC CE, the direction of the PL RS of the SRS resource set to which the aperiodic SRS resource belongs may, for example, have poor consistency with the updated beam emission direction, and thus it is no longer appropriate for the PL RS to serve as the PL RS for the aperiodic SRS resource. If the original PL RS is still used in this case, the uplink emission power of the aperiodic SRS resource may not be accurately tuned, or the accuracy of the tuning may be poor. For ease of understanding, FIG. 1 illustrates a schematic example of updating the beam emission direction of an aperiodic SRS resource in an SRS resource set by MAC CE signaling. SRS resource set A contains M SRS resources, and the information of the beam emission direction SRS-SpatialRelationInfo of SRS resource 1 is updated by MAC CE signaling. In this case, the PL RS for SRS resource set A may no longer be suitable for SRS resource 1. Examples of various methods for redetermining PL RS for such non-periodic SRS resources are provided according to the embodiments.

[0020] <1st Example>

[0021] FIG. 1 is a block diagram illustrating functional modules of an electronic device (100) for wireless communication according to an embodiment of the present disclosure. As illustrated in FIG. 1, the electronic device (100) includes a first determination unit (101) and a second determination unit (102). The first determination unit (101) is configured to determine a first non-periodic SRS resource whose beam emission direction is updated by a first MAC CE signaling. The second determination unit (102) is configured to re-determine the PL RS for the first non-periodic SRS resource based on information regarding the beam emission direction of the first non-periodic SRS resource in the first MAC CE signaling or the second MAC CE signaling.

[0022] The first decision unit (101) and the first decision unit (102) may be implemented by one or more processing circuits. Such processing circuits may be implemented, for example, as chips or processors. Additionally, it should be understood that the various functional units in the electronic device illustrated in FIG. 1 are logic modules divided based on the functions implemented by these functional units and are not intended to limit specific implementations applicable to other examples of electronic devices described subsequently.

[0023] The electronic device (100) may be arranged on the side of the UE or may be communicably connected to the UE. Here, it should be noted that the electronic device (100) may be implemented at the chip level or at the device level. For example, the electronic device (100) may serve as the user equipment itself and may additionally include external devices such as memory and a transceiver (not shown in the drawings). The memory may be configured to store programs to be executed and related data information required for the user equipment to implement various functions. The transceiver may include one or more communication interfaces to support communication with various devices (e.g., base stations, other user equipment, etc.). Implementations of the transceiver are not limited to those in this specification.

[0024] Additionally, ordinal numbers in the present disclosure, such as the first and second, are for distinction only and do not indicate any temporal or spatial order or other meanings.

[0025] The UE receives, for example, a first MAC CE signaling from a base station. The first decision unit (101) determines that the first MAC CE signaling will update the beam emission direction of the first aperiodic SRS resource. The first MAC CE signaling includes information on the beam emission direction of the first aperiodic SRS resource to be updated. As described above, the information on the beam emission direction may include information on the downlink reference signal or information on the uplink reference signal.

[0026] In this embodiment, the second determination unit (102) can re-determine the PL RS of the first non-periodic SRS resource based on information regarding the beam emission direction in the first MAC CE signaling, and in this way no additional signaling is required. Alternatively, the second determination unit (102) can re-determine the PL RS of the first non-periodic SRS resource based on the second MAC CE signaling transmitted by the base station. It should be noted that the first MAC CE signaling and the second MAC CE signaling are described herein but are not limited. The first MAC CE signaling and the second MAC CE signaling may be the same MAC CE signaling.

[0027] In the example, the second determination unit (102) is configured to re-determine the PL RS based on information of a downlink reference signal or an uplink reference signal included in information of the beam emission direction.

[0028] For example, if the information of the beam emission direction includes information of a downlink reference signal, such as the ID of the downlink reference signal, the second determination unit (102) is configured to take the downlink reference signal as the PL RS for the first non-periodic SRS resource. The downlink reference signal is, for example, a CSI-RS or an SSB. The PL RS set in this way has good directional consistency with the first non-periodic SRS resource. Meanwhile, if the information of the beam emission direction includes information of an uplink reference signal, such as the ID of another SRS, the second determination unit (102) is configured to take the PL RS of the set of SRS resources to which the uplink reference signal belongs as the PL RS for the first non-periodic SRS resource. A schematic diagram of this example is shown in FIG. 3, where the first MAC CE updates the beam emission direction of SRS resource 1.

[0029] Additionally, if the information of the beam emission direction includes information of a downlink reference signal, such as the ID of the downlink reference signal, the second determination unit (102) may be further configured to take an SSB having a QCL_TypeD relationship with the downlink reference signal as the PL RS of the first non-periodic SRS resource. Meanwhile, if the information of the beam emission direction includes information of an uplink reference signal, such as the ID of another SRS, the second determination unit (102) may be further configured to take an SSB in the beam direction previously used to receive the uplink reference signal as the PL RS for the first non-periodic SRS resource. This method may be referred to as a fallback manner, and a schematic diagram is shown in FIG. 4.

[0030] In this example, the second decision unit (102) may take the re-determined PL RS for the first non-periodic SRS resource as the PL RS for other non-periodic SRS resources in the first set of SRS resources to which the first non-periodic SRS resource belongs, or may maintain the PL RS for other non-periodic SRS resources without change. For example, referring to FIGS. 3 and 4, a new PL RS for SRS resource 1 may be taken as the PL RS for SRS resource 0 and SRS resource 2 through SRS resource M. Alternatively, the PL RS for SRS resource 0 and SRS resource 2 through SRS resource M may be maintained without change. M is a positive integer. The method to be adopted may be agreed upon in advance, for example, by the base station and the UE.

[0031] In this example, it can be seen that no additional signaling overhead is generated. The UE can determine a new PL RS for the first non-periodic SRS resource through the first MAC CE signaling itself.

[0032] In another example, the UE determines a new PL RS for the first non-periodic SRS resource with the help of additional MAC CE signaling from the base station.

[0033] If the PL RS for the first set of SRS resources to which the first non-periodic SRS resource belongs is a CSI-RS, the second decision unit (102) is further configured to acquire a second MAC CE signaling from a base station and to update the transmit configuration indicator (TCI) of the PL RS for the first set of SRS resources based on the second MAC CE signaling. Specifically, the second MAC CE signaling changes the emission direction of the downlink beam of the CSI-RS by updating the TCI of the CSI-RS acting as the PL RS for the first set of SRS resources, thereby indirectly changing the PL RS for the first set of SRS resources, so that the changed PL RS for the first set of SRS resources becomes suitable for the first non-periodic SRS resource. A schematic diagram of such an example is shown in FIG. 5, where the first MAC CE updates the beam emission direction of SRS resource 1.

[0034] Similarly, the second decision unit (102) may apply the changed PL RS for the first set of SRS resources to other non-periodic SRS resources in the set, or maintain the PL RS for other non-periodic SRS resources without change. The configuration to be adopted depends, for example, on a prior agreement between the base station and the UE.

[0035] In another example, for instance, a first non-periodic SRS resource belongs to the first set of SRS resources, but a PL RS for a second set of SRS resources, which is different from the first set of SRS resources, is more suitable for the updated beam emission direction of the first non-periodic SRS resource, so that the PL RS for the second set of SRS resources becomes more suitable to serve as the PL RS for the first non-periodic SRS resource. In this case, the second decision unit (102) is further configured to acquire a second MAC CE signaling from the base station to transmit the first non-periodic SRS resource to the second set of SRS resources. Accordingly, the second decision unit (102) determines the PL RS for the second set of SRS resources as the PL RS for the first non-periodic SRS resource. A schematic diagram of this example is shown in FIG. 6.

[0036] In this example, by modifying the set belonging to the first non-periodic SRS resource, the PL RS for the non-periodic SRS resource is updated while ensuring the consistency of the PL RS in the first SRS resource set.

[0037] In another example, for instance, in a carrier aggregation (CA) scenario, RRC signaling includes the parameter pathlossReferenceLinking, which is used to indicate to the UE the serving cell containing the PL RS for a specific set of SRS resources. Typically, a serving cell is either a SpCell (special cell) or a SCell (secondary cell). There may be only one SpCell, and more than one SCell (e.g., at most 31). In this example, the functionality of this parameter is extended. For instance, a link to the PL RS for a first non-periodic SRS resource to another serving cell can be realized through a second MAC CE signaling. The second MAC CE signaling may include a SCell index to indicate the SCell to which the PL RS for the first non-periodic SRS resource will be linked. For example, the PL RS for the first set of SRS resources to which the first non-periodic SRS resource belongs is on the SpCell. However, after the beam emission direction of the first aperiodic SRS resource is updated, the PL RS on the SpCell is no longer suitable for the first aperiodic SRS resource, and the base station will transmit a second MAC CE signaling to adjust the parameter pathlossReferenceLinking to a specific SCell. That is, the PL RS for the first aperiodic SRS resource is linked to a different serving cell. It should be noted that the above adjustment is implemented through pathlossReferenceLinking. Therefore, the PL RS for the first set of SRS resources can be considered to be linked to a different serving cell. In other words, the PL RS for all SRS resources in the first set of SRS resources is linked to a different serving cell. Alternatively, the PL RS for other SRS resources in the first set of SRS resources may remain on the original serving cell.The method to be adopted can be agreed upon in advance, for example, by the base station and the UE.

[0038] The first serving cell and the second serving cell are serving cells in a carrier aggregate. The first aperiodic SRS resource belongs to the first set of SRS resources, and the first PL RS for the first set of SRS resources is on the first serving cell. The second MAC CE signaling is used to link the first PL RS to the second serving cell. The first PL RS on the second serving cell is more suitable for the updated beam emission direction of the first aperiodic SRS resource, so the first PL RS on the second serving cell becomes more suitable to serve as the PL RS for the first aperiodic SRS resource. The second determination unit (102) determines the first PL RS on the second serving cell as the PL RS for the first aperiodic SRS resource. A schematic diagram of this example is shown in FIG. 7, where the PL RS for SRS resource 1 is linked to the second serving cell via the second MAC CE signaling. In the second serving cell, the PL RS is, for example, the PL RS for SRS resource set B. Depending on a prior agreement between the base station and the UE, the PL RS for other SRS resources in SRS resource set A may be linked to the second serving cell or may remain unchanged.

[0039] Similarly, in this example, by modifying the serving cell link relationship of the PL RS to the first aperiodic SRS resource through MAC CE signaling, the PL RS to the first aperiodic SRS resource is updated while using the existing signaling.

[0040] Examples of various methods for re-determining PL RS for non-periodic SRS resources, where the beam emission direction is updated by MAC CE signaling, have been described above, and it should be noted that these examples are not limited.

[0041] Additionally, if the PL RS for the first non-periodic SRS resource can be re-determined by various methods, different priority levels may be set for the different methods. For example, the second determination unit (102) may select a method for re-determining the PL RS for the first non-periodic SRS resource according to the following priority order: a step of determining based on the second MAC CE signaling, and a step of determining based on information regarding the beam emission direction. That is, if the second MAC CE signaling is present, the PL RS for the first non-periodic SRS resource is determined according to the indication of the second MAC CE signaling, and otherwise, the PL RS is determined based on information regarding the beam emission direction. It should be understood that this is not limited and that a reverse priority order may be adopted. Alternatively, the UE may determine the method to be adopted on its own.

[0042] Meanwhile, the UE and the base station may agree to use a fixed method to determine the PL RS for the first non-periodic SRS resource. For example, one of the various methods above is selected, and the PL RS is determined solely by the selected method. In this case, a method having minimal signaling overhead may be selected, such as a method determined based on information from an uplink reference signal or a downlink reference signal included in information on the beam emission direction.

[0043] In summary, the electronic device (100) according to this embodiment updates the PL RS for a first non-periodic SRS resource, the beam emission direction of which is updated by the first MAC CE signaling, and thus can configure the appropriate PL RS for the first non-periodic SRS resource, thereby accurately determining the uplink emission power of the SRS.

[0044] <2nd Example>

[0045] FIG. 8 is a block diagram illustrating functional modules of an electronic device (200) according to another embodiment of the present disclosure. As illustrated in FIG. 8, such an electronic device (200) includes a first determination unit (201) and a second determination unit (202). The first determination unit (201) is configured to determine a method for a UE to re-determine the PL RS for a first non-periodic SRS resource, for which the beam emission direction is updated by a first MAC CE signaling. The second determination unit (202) is configured to determine additional operations to be performed based on the determined method.

[0046] The first decision unit (201) and the second decision unit (202) may be implemented by one or more processing circuits. Such processing circuits may be implemented, for example, as chips or processors. Additionally, it should be understood that the various functional units in the electronic device illustrated in FIG. 8 are logic modules divided based on the functions implemented by these functional units, and are not intended to limit specific implementations, and are also applicable to other examples of electronic devices to be described below.

[0047] The electronic device (200) may be arranged, for example, on the side of a base station or may be communicably connected to a base station. The base station described in this disclosure may be a transmit receive point (TRP) or an access point (AP). Here, it should be noted that the electronic device (200) may be implemented at the chip level or the device level. For example, the electronic device (200) may serve as the base station itself and may additionally include external devices such as memory and a transceiver (not shown in the drawings). The memory may be configured to store programs and related data information to be executed by the base station to implement various functions. The transceiver may include one or more communication interfaces to support communication with various devices (e.g., user equipment, other base stations, etc.). Implementations of the transceiver are not limited in this specification.

[0048] Similar to the first embodiment, the new PL RS for the first non-periodic SRS resource can be determined in various ways.

[0049] For example, the first decision unit (201) may decide to adopt the following method. The UE re-determines the PL RS based on information of the uplink reference signal or downlink reference signal included in the information of the beam direction. This method is described in detail in the first embodiment and is not repeated herein. By this method, since the base station is not required to transmit any other signaling or perform other operations, the second decision unit (202) is configured to determine that no further operations will be performed.

[0050] In another example, if the PL RS for the first set of SRS resources to which the first aperiodic SRS resource belongs is a CSI-RS, the first decision unit (201) may decide to adopt the following method: updating the TCI of the CSI-RS through a second MAC CE signaling—so that the CSI-RS becomes suitable to serve as the PL RS for the first aperiodic SRS resource. The second decision unit (202) is configured to generate a second MAC CE signaling containing the TCI and to transmit the second MAC CE signaling to the UE. Thus, the UE determines the CSI-RS having the updated TCI as the PL RS for the first aperiodic SRS resource according to the second MAC CE signaling. Optionally, the PL RS for other aperiodic SRS resources in the first set of SRS resources may be changed to a new PL RS or remain unchanged, which depends, for example, on a prior agreement between the base station and the UE. In this way, the base station may know that it is required to additionally generate and transmit the second MAC CE signaling.

[0051] In another example, assuming that a first non-periodic SRS resource belongs to a first set of SRS resources and that a PL RS for a second set of SRS resources different from the first set of SRS resources is suitable to serve as a PL RS for the first non-periodic SRS resource, the method determined by the first determination unit (202) may include the step of transmitting the first non-periodic SRS resource to the second set of SRS resources via a second MAC CE signaling. In this way, the UE can determine the PL RS for the second set of SRS resources as a PL RS for the first non-periodic SRS resource. The second determination unit (202) is configured to generate a second MAC CE signaling and to transmit the second MAC CE signaling to the UE.

[0052] In another example, in a CA scenario, the first serving cell and the second serving cell are serving cells in carrier aggregation, and it is assumed that the parameter pathlossReferenceLinking in RRC signaling indicates a cell having a first PL RS for a first set of SRS resources, such as the first serving cell. The first aperiodic SRS resource belongs to the first set of SRS resources. After the beam emission direction of the first aperiodic SRS resource is updated via the first MAC CE signaling, the first PL RS on the first serving cell is no longer suitable to serve as a PL RS for the first aperiodic SRS resource. Meanwhile, the first PL RS is suitable to serve as a PL RS for the first aperiodic SRS resource when it is on the second serving cell. In this case, the first decision unit (201) may determine that the following method is adopted: linking the first PL RS to the second serving cell via the second MAC CE signaling. In this way, the UE can determine the first PL RS on the second serving cell as the PL RS for the first aperiodic SRS resource. The second determination unit (202) is configured to generate the second MAC CE signaling and to transmit the second MAC CE signaling to the UE. Optionally, the PL RS for other aperiodic SRS resources in the first set of SRS resources may be maintained without change or linked to the second serving cell, which depends, for example, on a prior agreement between the base station and the UE.

[0053] For details regarding the above methods, reference may be made to the description in the first embodiment, and such details are not repeated herein. It should be noted that, similar to the first embodiment, the first MAC CE signaling and the second MAC CE signaling may be the same MAC CE signaling.

[0054] As an implementation, the first decision unit (201) may decide to adopt one of various methods based on various factors, and the second decision unit (202) may determine additional operations to be performed based on the determined method. For example, the first decision unit (201) may determine such a method based on one or more of information on the beam emission direction in the first MAC CE signaling, PL RS for each SRS resource set, and signaling overhead. For example, the first decision unit (201) may determine the priority order of various methods based on one or more of these factors and select the method with the highest priority.

[0055] In another implementation, the first decision unit (201) may permanently adopt a specific method, and the second decision unit (202) determines additional operations to be performed based on this method. For example, the permanently adopted method has good universality and small signaling overhead. For example, the first decision unit (201) may permanently adopt a method in which the UE redetermines the PL RS based on information of an uplink reference signal or a downlink reference signal included in the beam direction information. In this case, the first decision unit (201) and the second decision unit (201) may even be omitted, and only an agreement between the base station and the UE is required.

[0056] In summary, the electronic device (200) according to this embodiment updates the PL RS for a first non-periodic SRS resource, the beam emission direction of which is updated by the first MAC CE signaling, and thus can configure the appropriate PL RS for the first non-periodic SRS resource, thereby accurately determining the uplink emission power of the SRS.

[0057] <3rd Example>

[0058] In the above description of embodiments of electronic devices for wireless communication, it is evident that some processes and methods are additionally disclosed. In the following, a summary of these methods is described without repeating the details described above. However, it should be noted that while these methods are disclosed when describing electronic devices for wireless communication, these methods do not need to adopt these components or be performed by these components described above. For example, implementations of electronic devices for wireless communication may be partially or completely implemented by hardware and / or firmware. While the methods for wireless communication discussed below may be fully implemented by computer executable programs, these methods may be implemented by hardware and / or firmware for implementing electronic devices for wireless communication.

[0059] FIG. 9 is a flowchart of a method for wireless communication according to an embodiment of the present disclosure. The method comprises the step of determining a first non-periodic SRS resource whose beam emission direction is updated by a first MAC CE signaling (S11); and the step of re-determining a PL RS for the first non-periodic SRS resource based on information of the beam emission direction of the first non-periodic SRS resource in the first MAC CE signaling or a second MAC CE signaling (S12). The method may be performed on the UE side.

[0060] In the example, at step S12, the PL RS may be re-determined based on information of a downlink reference signal or an uplink reference signal included in the information of the beam emission direction. If the information of the beam emission direction includes information of a downlink reference signal, the downlink reference signal may serve as the PL RS for the first non-periodic SRS resource. If the information of the beam emission direction includes information of an uplink reference signal, the PL RS for the set of SRS resources to which the uplink reference signal belongs may serve as the PL RS for the first non-periodic SRS resource. Alternatively, if the information of the beam emission direction includes information of a downlink reference signal, an SSB having a QCL_TypeD relationship with the downlink reference signal may serve as the PL RS for the first non-periodic SRS resource. If the information of the beam emission direction includes information of an uplink reference signal, the SSB of the beam direction previously used to receive the uplink reference signal may serve as the PL RS for the first non-periodic SRS resource.

[0061] In another example, if the PL RS for the first set of SRS resources to which the first non-periodic SRS resource belongs is CSI-RS, step S12 includes the step of acquiring a second MAC CE signaling from a base station and updating the TCI of the PL RS for the first set of SRS resources based on the second MAC CE signaling.

[0062] In another example, the first non-periodic SRS resource belongs to the first set of SRS resources, and the second MAC CE signaling is used to transmit the first non-periodic SRS resource to the second set of SRS resources which is different from the first set of SRS resources. Step S12 further includes the step of determining the PL RS for the second set of SRS resources as the PL RS for the first non-periodic SRS resource.

[0063] In another example, for a CA scenario, the first non-periodic SRS resource belongs to the first set of SRS resources, and the first PL RS for the first set of SRS resources is on the first serving cell. The second MAC CE signaling is used to link the first PL RS to the second serving cell. Step S12 further includes the step of determining the first PL RS on the second serving cell as the PL RS for the first non-periodic SRS resource. The first serving cell and the second serving cell are serving cells in the carrier aggregation.

[0064] Additionally, depending on the actual configuration, in some examples, the re-determined PL RS for the first non-periodic SRS resource may be taken as the PL RS for other non-periodic SRS resources in the set to which the first non-periodic SRS resource belongs. Alternatively, the PL RS for other non-periodic SRS resources may be maintained without change.

[0065] Additionally, in step S12, for example, a method for redetermining the PL RS for the first non-periodic SRS resource may be selected according to the following order of priority: a step of determining based on the second MAC CE signaling, and a step of determining based on information regarding the beam emission direction. It should be understood that the above description is not limiting.

[0066] FIG. 10 is a flowchart of a method for wireless communication according to another embodiment of the present disclosure. The method comprises the step (S21) of determining a method for user equipment to redetermine PL RS for a first aperiodic SRS resource, wherein the beam emission direction is updated by a first MAC CE signaling; and the step (S22) of determining additional operations to be performed based on the determined method. The method may be performed, for example, on a base station side.

[0067] The method for the UE to redetermine the PL RS for the first non-periodic SRS resource has been described in detail above, and this method is not repeated here.

[0068] Additionally, in step S21, for example, this method may be determined based on one or more of information on the beam emission direction in the first MAC CE signaling; PL RS for each set of SRS resources; and signaling overhead.

[0069] According to methods according to such embodiments of the present disclosure, a PL RS for a first non-periodic SRS resource, in which the beam emission direction is updated by a first MAC CE signaling, is updated, and an appropriate PL RS can be configured for the first non-periodic SRS resource, thereby accurately determining the uplink emission power of the SRS.

[0070] It should be noted that the above methods may be used separately or in combination. Details thereof are described in the first and second embodiments and are not repeated herein.

[0071] The technology according to the present disclosure is applicable to various products.

[0072] For example, the electronic device (200) can be implemented as various base stations. Such base stations can be implemented as any type of eNB (evolved node B) or gNB (5G base station). eNBs include, for example, macro eNBs and small eNBs. Small eNBs may be eNBs that cover cells smaller than macro cells, such as pico eNBs, micro eNBs, and home (femto) eNBs. The case for gNBs is similar to that above. Alternatively, base stations can be implemented as any other type of base station, such as Node B and BTS (base transceiver station). A base station may include a main body (also referred to as a base station device) configured to control wireless communication; and one or more RRHs (remote wireless head ends) located at different locations from the main body. Additionally, various types of user equipment may each serve as a base station by performing the functions of the base station temporarily or semi-permanently.

[0073] The electronic device (100) can be implemented as various user devices. The user device can be implemented as a mobile device (such as a smartphone, tablet PC (personal computer), laptop PC, portable gaming terminal, portable / dongle mobile router, and digital camera) or as a vehicle device (such as a vehicle navigation device). The user device can also be implemented as a device that performs machine-to-machine (M2M) communication (also referred to as a machine-type communication (MTC) device). Additionally, the user device may be a wireless communication module (such as an integrated circuit module containing a single die) mounted on each of the devices described above.

[0074] [Application Examples Regarding Base Stations]

[0075] (First Application Example)

[0076] FIG. 11 is a block diagram illustrating a first example of an exemplary configuration of an eNB or gNB to which the technology according to the present disclosure may be applied. It should be noted that the following description is given by taking an eNB as an example, which is also applicable to a gNB. The eNB (800) includes one or more antennas (810) and base station devices (820). Each of the base station devices (820) and antennas (810) may be connected to each other via radio frequency (RF) cables.

[0077] Each of the antennas (810) comprises a single or multiple antenna elements (such as multiple antenna elements included in a MIMO (multiple-input multiple-output) antenna) and is used by a base station device (820) to transmit and receive radio signals. As illustrated in FIG. 11, the eNB (800) may include multiple antennas (810). For example, the multiple antennas (810) may be compatible with multiple frequency bands used by the eNB (800). FIG. 11 illustrates an example in which the eNB (800) includes multiple antennas (810), but the eNB (800) may also include a single antenna (810).

[0078] The base station device (820) includes a controller (821), a memory (822), a network interface (823), and a wireless communication interface (825).

[0079] The controller (821) may be, for example, a CPU or a DSP and operates various functions of the upper layer of the base station device (820). For example, the controller (821) generates data packets from data in signals processed by the wireless communication interface (825) and transmits the generated packets through the network interface (823). The controller (821) may generate bundled packets by bundling data from multiple baseband processors and transmit the generated bundled packets. The controller (821) may have logic functions that perform controls such as wireless resource control, wireless bearer control, mobility management, acknowledgment control, and scheduling. These controls may be performed in cooperation with a nearby eNB or core network node. The memory (822) includes RAM and ROM and stores programs executed by the controller (821) and various types of control data (such as terminal lists, transmit power data, and scheduling data).

[0080] The network interface (823) is a communication interface for connecting the base station device (820) to the core network (824). The controller (821) can communicate with a core network node or another eNB through the network interface (823). In this case, the eNB (800) and the core network node or other eNB can be connected to each other through a logic interface (such as the S1 interface and the X2 interface). The network interface (823) may also be a wireless communication interface or a wired communication interface for wireless backhaul. If the network interface (823) is a wireless communication interface, the network interface (823) may use a higher frequency band for wireless communication than that used by the wireless communication interface (825).

[0081] The wireless communication interface (825) supports any cellular communication scheme (such as LTE (Long Term Evolution) and LTE-advanced) and provides wireless access to a terminal located in a cell of the eNB (800) via the antenna (810). The wireless communication interface (825) may typically include, for example, a baseband (BB) processor (826) and an RF circuit (827). The BB processor (826) may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and perform signal processing of various types of layers (such as L1, Media Access Control (MAC), Radio Link Control (RLC), and Packet Data Convergence Protocol (PDCP)). The BB processor (826) may have some or all of the logic functions described above instead of the controller (821). The BB processor (826) may be a module including memory for storing communication control programs, or a processor and associated circuits configured to execute these programs. Updating these programs may allow the functions of the BB processor (826) to be changed. This module may be a card or blade inserted into a slot of the base station device (820). Alternatively, this module may also be a chip mounted on the card or blade. Meanwhile, the RF circuit (827) may include, for example, a mixer, a filter, and an amplifier, and transmits and receives wireless signals through the antenna (810).

[0082] As illustrated in FIG. 11, the wireless communication interface (825) may include a plurality of BB processors (826). For example, the plurality of BB processors (826) may be compatible with a plurality of frequency bands used by the eNB (800). The wireless communication interface (825) may include a plurality of RF circuits (827) as illustrated in FIG. 11. For example, the plurality of RF circuits (827) may be compatible with a plurality of antenna elements. FIG. 11 illustrates an example in which the wireless communication interface (825) includes a plurality of BB processors (826) and a plurality of RF circuits (827), but the wireless communication interface (825) may also include a single BB processor (826) and a single RF circuit (827).

[0083] In the eNB (800) illustrated in FIG. 11, a transceiver of an electronic device (200) may be implemented by a wireless communication interface (825). At least some of the functions may also be implemented by a controller (821). For example, the controller (821) may determine a method for the UE to redetermine the PL RS for a first non-periodic SRS resource, where the beam emission direction is updated by MAC CE signaling, and to perform corresponding operations by performing the functions of a first decision unit (201) and a second decision unit (202).

[0084] (2nd Application Example)

[0085] FIG. 12 is a block diagram illustrating a second example of an exemplary configuration of an eNB or gNB to which the technology according to the present disclosure may be applied. It should be noted that the following description is given by taking an eNB as an example, which also applies to a gNB. The eNB (830) includes one or more antennas (840), a base station device (850), and an RRH (860). Each of the RRH (860) and the antennas (840) may be connected to each other via an RF cable. The base station device (850) and the RRH (860) may be connected to each other via a high-speed line such as an optical fiber cable.

[0086] Each of the antennas (840) comprises a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used by the RRH (860) to transmit and receive radio signals. As illustrated in FIG. 12, the eNB (830) may include multiple antennas (840). For example, the multiple antennas (840) may be compatible with multiple frequency bands used by the eNB (830). FIG. 12 illustrates an example in which the eNB (830) includes multiple antennas (840), but the eNB (830) may also include a single antenna (840).

[0087] The base station device (850) includes a controller (851), a memory (852), a network interface (853), a wireless communication interface (855), and a connection interface (857). The controller (851), memory (852), and network interface (853) are identical to the controller (821), memory (822), and network interface (823) described with reference to FIG. 11.

[0088] The wireless communication interface (855) supports any cellular communication scheme (such as LTE and LTE-advanced) and provides wireless communication to a terminal located in a sector corresponding to the RRH (860) via the RRH (860) and antenna (840). The wireless communication interface (855) may typically include, for example, a BB processor (856). The BB processor (856) is identical to the BB processor (826) described with reference to FIG. 11, except that the BB processor (856) is connected to the RF circuit (864) of the RRH (860) via a connection interface (857). As shown in FIG. 12, the wireless communication interface (855) may include a plurality of BB processors (856). For example, the plurality of BB processors (856) may be compatible with a plurality of frequency bands used by the eNB (830). FIG. 12 illustrates an example in which the wireless communication interface (855) includes a plurality of BB processors (856), but the wireless communication interface (855) may also include a single BB processor (856).

[0089] The connection interface (857) is an interface for connecting a base station device (850) (wireless communication interface (855)) to the RRH (860). The connection interface (857) may also be a communication module for communication over the high-speed line described above, for connecting the base station device (850) (wireless communication interface (855)) to the RRH (860).

[0090] The RRH (860) includes a connection interface (861) and a wireless communication interface (863).

[0091] The connection interface (861) is an interface for connecting the RRH (860) (wireless communication interface (863)) to the base station device (850). The connection interface (861) may also be a communication module for communication over the high-speed line described above.

[0092] The wireless communication interface (863) transmits and receives wireless signals through the antenna (840). The wireless communication interface (863) may typically include, for example, an RF circuit (864). The RF circuit (864) may include, for example, a mixer, a filter, and an amplifier, and transmits and receives wireless signals through the antenna (840). The wireless communication interface (863) may include a plurality of RF circuits (864), as illustrated in FIG. 12. For example, the plurality of RF circuits (864) may support a plurality of antenna elements. FIG. 12 illustrates an example in which the wireless communication interface (863) includes a plurality of RF circuits (864), but the wireless communication interface (863) may also include a single RF circuit (864).

[0093] In the eNB (830) illustrated in FIG. 12, the transceiver of the electronic device (200) may be implemented by the wireless communication interface (855) and / or the wireless communication interface (863). At least some of the functions may also be implemented by the controller (851). For example, the controller (851) may determine a method for the UE to redetermine the PL RS for a first non-periodic SRS resource, where the beam emission direction is updated by MAC CE signaling, and to perform corresponding operations by performing the functions of the first decision unit (201) and the second decision unit (202).

[0094] <Application Examples Regarding User Equipment>

[0095] (First Application Example)

[0096] FIG. 13 is a block diagram illustrating an exemplary configuration of a smartphone (900) to which the technology according to the present disclosure may be applied. The smartphone (900) includes a processor (901), memory (902), storage (903), an external connection interface (904), a camera (906), a sensor (907), a microphone (908), an input device (909), a display device (910), a speaker (911), a wireless communication interface (912), one or more antenna switches (915), one or more antennas (916), a bus (917), a battery (918), and an auxiliary controller (919).

[0097] The processor (901) may be, for example, a CPU or an SoC (system on a chip) and controls the functions of the application layer and other layers of the smartphone (900). The memory (902) includes RAM and ROM and stores programs and data executed by the processor (901). The storage (903) may include a storage medium such as semiconductor memory and a hard disk. The external connection interface (904) is an interface for connecting external devices (such as memory cards and USB (universal serial bus) devices) to the smartphone (900).

[0098] The camera (906) includes an image sensor (such as a CCD (charge coupled device) and a CMOS (complementary metal oxide semiconductor)) and generates a captured image. The sensor (907) may include a group of sensors, such as a measurement sensor, a gyroscope sensor, a geomagnetic sensor, and an accelerometer sensor. The microphone (908) converts sounds input to the smartphone (900) into audio signals. The input device (909) includes, for example, a touch sensor, a keypad, a keyboard, a button, or a switch configured to detect a touch on the screen of the display device (910), and receives actions or information input from the user. The display device (910) includes a screen (such as an LCD (liquid crystal display) and an OLED (organic light-emitting diode) display) and displays an output image of the smartphone (900). The speaker (911) converts audio signals output from the smartphone (900) into sounds.

[0099] The wireless communication interface (912) supports any cellular communication scheme (such as LTE and LTE-advanced) and performs wireless communication. The wireless communication interface (912) may include, for example, a BB processor (913) and an RF circuit (914). The BB processor (913) may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / de-multiplexing, and may perform various types of signal processing for wireless communication. The RF circuit (914) may include, for example, a mixer, a filter, and an amplifier, and transmits and receives wireless signals through an antenna (916). FIG. 13 illustrates a case where one RF link is connected to one antenna, but this is merely exemplary, and it should be noted that there may also be a case where one RF link is connected to multiple antennas through multiple phase shifters. The wireless communication interface (912) may be a chip module in which the BB processor (913) and the RF circuit (914) are integrated. The wireless communication interface (912) may include a plurality of BB processors (913) and a plurality of RF circuits (914), as illustrated in FIG. 13. FIG. 13 illustrates an example in which the wireless communication interface (912) includes a plurality of BB processors (913) and a plurality of RF circuits (914), but the wireless communication interface (912) may also include a single BB processor (913) or a single RF circuit (914).

[0100] In addition, in addition to the cellular communication scheme, the wireless communication interface (912) may support other types of wireless communication schemes, such as short-range wireless communication schemes, near-field communication schemes, and wireless LAN (local area network) schemes. In such cases, the wireless communication interface (912) may include a BB processor (913) and an RF circuit (914) for each wireless communication scheme.

[0101] Each of the antenna switches (915) switches the connection destinations of the antenna (916) among a number of circuits (such as circuits for different wireless communication schemes) included in the wireless communication interface (912).

[0102] Each of the antennas (916) includes a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna), and a wireless communication interface (912) is used to transmit and receive wireless signals. A smartphone (900) may include multiple antennas (916), as illustrated in FIG. 13. FIG. 13 illustrates an example in which the smartphone (900) includes multiple antennas (916), but the smartphone (900) may also include a single antenna (916).

[0103] Additionally, the smartphone (900) may include an antenna (916) for each wireless communication scheme. In this case, the antenna switch (915) may be omitted from the configuration of the smartphone (900).

[0104] The bus (917) connects the processor (901), memory (902), storage (903), external access interface (904), camera (906), sensor (907), microphone (908), input device (909), display device (910), speaker (911), wireless communication interface (912), and auxiliary controller (919) to each other. The battery (918) supplies power to the blocks of the smartphone (900) shown in FIG. 13 through feeder lines partially shown by dashed lines in FIG. 13. The auxiliary controller (919) operates the minimum necessary functions of the smartphone (900), for example, in sleep mode.

[0105] In the smartphone (900) illustrated in FIG. 13, the transceiver of the electronic device (100) may be implemented by a wireless communication interface (912). At least some of the functions may also be implemented by a processor (901) or an auxiliary controller (919). For example, the processor (901) or the auxiliary controller (919) may re-determine the PL RS for a first non-periodic SRS resource, where the beam emission direction is updated by MAC CE signaling, by performing the functions of the first determination unit (101) and the second determination unit (102).

[0106] (2nd Application Example)

[0107] FIG. 14 is a block diagram illustrating an example of a schematic configuration of an automobile navigation device (920) to which the technology according to the present disclosure may be applied. The automobile navigation device (920) includes a processor (921), memory (922), a GPS (global positioning system) module (924), a sensor (925), a data interface (926), a content player (927), a storage media interface (928), an input device (929), a display device (930), a speaker (931), a wireless communication interface (933), one or more antenna switches (936), one or more antennas (937), and a battery (938).

[0108] The processor (921) may be, for example, a CPU or an SoC and controls the navigation functions and additional functions of the car navigation device (920). The memory (922) includes RAM and ROM and stores programs and data executed by the processor (921).

[0109] The GPS module (924) determines the location (such as latitude, longitude, and altitude) of the vehicle navigation device (920) using GPS signals received from GPS satellites. The sensor (925) may include a group of sensors such as a gyroscope sensor, a geomagnetic sensor, and a barometric pressure sensor. The data interface (926) is connected to the in-vehicle network (941) via, for example, a terminal not shown, and acquires data (such as vehicle speed data) generated by the vehicle.

[0110] The content player (927) plays content stored on a storage medium (such as a CD and DVD) inserted into the storage medium interface (928). The input device (929) includes, for example, a touch sensor, a button, or a switch configured to detect a touch on the screen of the display device (930) and receives actions or information input from the user. The display device (930) includes a screen, such as an LCD or OLED display, and displays an image of the content being played or a navigation function. The speaker (931) outputs sound for the navigation function or the content being played.

[0111] The wireless communication interface (933) supports any cellular communication scheme (such as LTE and LTE-Advanced) and performs wireless communication. The wireless communication interface (933) may typically include, for example, a BB processor (934) and an RF circuit (935). The BB processor (934) may perform, for example, encoding / decoding, modulation / demodulation, and multiplexing / demultiplexing, and may perform various types of signal processing for wireless communication. The RF circuit (935) may include, for example, a mixer, a filter, and an amplifier, and transmits and receives wireless signals through an antenna (937). The wireless communication interface (933) may also be a chip module in which the BB processor (934) and the RF circuit (935) are integrated. The wireless communication interface (933) may include a plurality of BB processors (934) and a plurality of RF circuits (935), as illustrated in FIG. 14. FIG. 14 illustrates an example in which a wireless communication interface (933) includes a plurality of BB processors (934) and a plurality of RF circuits (935), but the wireless communication interface (933) may also include a single BB processor (934) and a single RF circuit (935).

[0112] In addition, in addition to the cellular communication scheme, the wireless communication interface (933) may support other types of wireless communication schemes, such as short-range wireless communication schemes, near-field communication schemes, and wireless LAN schemes. In such cases, the wireless communication interface (933) may include a BB processor (934) and an RF circuit (935) for each wireless communication scheme.

[0113] Each of the antenna switches (936) switches the connection destinations of the antenna (937) among a number of circuits (such as circuits for different wireless communication schemes) included in the wireless communication interface (933).

[0114] Each of the antennas (937) comprises a single or multiple antenna elements (such as multiple antenna elements included in a MIMO antenna) and is used by a wireless communication interface (933) to transmit and receive wireless signals. As illustrated in FIG. 14, the car navigation device (920) may include multiple antennas (937). FIG. 14 illustrates an example in which the car navigation device (920) includes multiple antennas (937), but the car navigation device (920) may also include a single antenna (937).

[0115] Additionally, the car navigation device (920) may include an antenna (937) for each wireless communication scheme. In this case, antenna switches (936) may be omitted from the configuration of the car navigation device (920).

[0116] The battery (938) supplies power to the blocks of the car navigation device (920) shown in FIG. 14 through feeder lines partially shown by dashed lines in FIG. 14. The battery (938) accumulates power supplied from the vehicle.

[0117] In the car navigation device (920) illustrated in FIG. 14, the electronic device (100) may be implemented by a wireless communication interface (933). At least some of these functions may also be implemented by a processor (921). For example, the processor (921) may re-determine the PL RS for a first non-periodic SRS resource, where the beam emission direction is updated by MAC CE signaling, by performing the functions of the first determination unit (101) and the second determination unit (102).

[0118] The technology of the present disclosure may also be implemented as an in-vehicle system (or vehicle) (940) comprising one or more blocks of a vehicle navigation device (920), an in-vehicle network (941), and a vehicle module (942). The vehicle module (942) generates vehicle data (such as vehicle speed, engine speed, and fault information) and outputs the generated data to the in-vehicle network (941).

[0119] The basic principles of the present disclosure have been described above with specific embodiments. However, as will be recognized by a person skilled in the art, all or any of the steps or components of the method and apparatus according to the present disclosure may be implemented in hardware, firmware, software, or a combination thereof on any computing device (including processors, storage media, etc.) or a network of computing devices by a person skilled in the art in light of the disclosure of the present disclosure, and general circuit design knowledge or general programming skills may be used.

[0120] Additionally, the present disclosure further discloses a program product in which machine-readable instruction codes are stored. The methods described above according to the embodiments can be implemented when the instruction codes are read and executed by a machine.

[0121] Accordingly, the present disclosure also includes a memory medium for carrying a program product in which machine-readable instruction codes are stored. Such memory media include, but are not limited to, soft disks, optical disks, magnetic optical disks, memory cards, memory sticks, etc.

[0122] When the present disclosure is realized as software or firmware, the program constituting such software is installed from a storage medium or network on a computer having a dedicated hardware structure (e.g., a general-purpose computer (1400) shown in FIG. 14), and such a computer can implement various functions when various programs are installed.

[0123] In FIG. 15, the CPU (central processing unit) (1501) performs various processing according to a program stored in the ROM (read-only memory) (1502) or a program loaded into the RAM (random access memory) (1503) from a memory section (1508). Data required for the various processing of the CPU (1501) may be stored in the RAM (1503) as needed. The CPU (1501), ROM (1502), and RAM (1503) are linked to each other via a bus (1504). An input / output interface (1505) is also linked to the bus (1504).

[0124] The following components are linked to the input / output interface (1505): an input section (1506) (including a keyboard, mouse, etc.), an output section (1507) (including displays such as a CRT (cathode ray tube), an LCD (liquid crystal display), a loudspeaker, etc.), a memory section (1508) (including a hard disk, etc.), and a communication section (1509) (including a network interface card such as a LAN card, a modem, etc.). The communication section (1509) performs communication processing through a network such as the Internet. If necessary, a driver (1510) may also be linked to the input / output interface (1505). If necessary, a removable medium (1511), e.g., a magnetic disk, an optical disk, a magneto-optical disk, a semiconductor memory, etc., may be installed in the driver (1510) so that a computer program read from it is appropriately installed in the memory section (1508).

[0125] When the aforementioned series of processes is achieved through software, the programs forming such software are installed from a network such as the Internet or a memory medium such as a removable medium (1511).

[0126] Such memory media are not limited to the removable media (1511) illustrated in FIG. 15, and should be recognized by those skilled in the art that they are distributed separately from the device to store programs and provide programs to users. The removable media (1511) may be, for example, a magnetic disk (including a floppy disk (trademark), a compact disk (including a CD-ROM (compact disc read-only memory) and a DVD (digital versatile disc)), a magneto-optical disk (including a mini disc (trademark)), and a semiconductor memory. Alternatively, the memory media may be hard disks included in a ROM (1502) and memory section (1508) where programs are stored, and may be distributed to users along with the device in which they are integrated.

[0127] It is to be further noted that in the device, method, and system according to the present disclosure, each component or step may be decomposed and / or recombined. Such decompositions and / or recombinations should be regarded as equivalent solutions of the present disclosure. Furthermore, the above series of processing steps may, of course, be performed sequentially in time as described above, but are not limited thereto, and some of these steps may be performed in parallel or independently of each other.

[0128] Finally, it should be noted that the term “include” or “comprising” or any variation thereof is intended to encompass a non-exclusive inclusion such that a process, method, article, or device comprising merely a series of elements includes not only these elements but also other elements not explicitly enumerated or element(s) unique to such process, method, article, or device. Furthermore, the expression “comprising a(n) ......” in which an element is defined will not exclude the presence of additional identical element(s) in a process, method, article, or device comprising the defined element(s) unless further defined.

[0129] Although embodiments of the present disclosure have been described in detail above in conjunction with the drawings, it will be recognized that the embodiments described above are merely illustrative and do not limit the present disclosure. A person skilled in the art may make various modifications and variations to the above embodiments without departing from the spirit and scope of the present disclosure. Accordingly, the scope of the present disclosure is defined only by the appended claims and their equivalents.

Claims

Claim 1 An electronic device for wireless communication, comprising a processing circuit, wherein the processing circuit determines a first non-periodic sounding reference signal (SRS) resource in which the beam emission direction is updated by a first MAC CE (medium access control-control element) signaling; An electronic device configured to redetermine a path loss reference signal for the first non-periodic sounding reference signal resource based on information of the beam emission direction of the first non-periodic sounding reference signal resource in the first MAC CE signaling or the second MAC CE signaling, wherein the first non-periodic sounding reference signal resource belongs to a first sounding reference signal resource set, and the first path loss reference signal for the first sounding reference signal resource set is on a first serving cell, and the second MAC CE signaling is used to link the first path loss reference signal to a second serving cell, and the processing circuit is configured to determine the first path loss reference signal on the second serving cell as a path loss reference signal for the first non-periodic sounding reference signal resource, and the first serving cell and the second serving cell are serving cells in a carrier aggregation. Claim 2 An electronic device according to claim 1, wherein the processing circuit is configured to re-determine the path loss reference signal based on information of a downlink reference signal or an uplink reference signal included in information of the beam emission direction. Claim 3 An electronic device according to paragraph 2, wherein, when the information of the downlink reference signal is included in the information of the beam emission direction, the processing circuit is configured to take the downlink reference signal as a path loss reference signal for the first non-periodic sounding reference signal resource. Claim 4 An electronic device according to paragraph 2, wherein, when the information of the uplink reference signal is included in the information of the beam emission direction, the processing circuit is configured to take a path loss reference signal for the sounding reference signal resource set to which the uplink reference signal belongs as a path loss reference signal for the first non-periodic sounding reference signal resource. Claim 5 An electronic device according to paragraph 2, wherein, when the information of the downlink reference signal is included in the information of the beam emission direction, the processing circuit is configured to take a synchronization signal block having a QCL_TypeD (quasi co location TypeD) relationship with the downlink reference signal as a path loss reference signal for the first non-periodic sounding reference signal resource. Claim 6 An electronic device according to paragraph 2, wherein, when the information of the uplink reference signal is included in the information of the beam emission direction, the processing circuit is configured to take a synchronization signal block in the beam direction previously used to receive the uplink reference signal as a path loss reference signal for the first non-periodic sounding reference signal resource. Claim 7 An electronic device according to claim 1, wherein, when the path loss reference signal for the first sounding reference signal resource set to which the first non-periodic sounding reference signal resource belongs is a channel state information reference signal, the processing circuit is further configured to acquire the second MAC CE signaling from the base station and to update the transmission configuration indication of the path loss reference signal for the first sounding reference signal resource set based on the second MAC CE signaling. Claim 8 An electronic device according to claim 1, wherein the second MAC CE signaling is used to transmit the first non-periodic sounding reference signal resource to a second sounding reference signal resource set different from the first sounding reference signal resource set, and the processing circuit is configured to determine a path loss reference signal for the second sounding reference signal resource set as a path loss reference signal for the first non-periodic sounding reference signal resource. Claim 9 delete Claim 10 An electronic device according to claim 1, wherein the processing circuit is further configured to take a re-determined path loss reference signal for the first non-periodic sounding reference signal resource as a path loss reference signal for other non-periodic sounding reference signal resources in the first set of sounding reference signal resources to which the first non-periodic sounding reference signal resource belongs. Claim 11 An electronic device according to claim 1, wherein the processing circuit is further configured to maintain path loss reference signals for other non-periodic sounding reference signal resources in the first sounding reference signal resource set to which the first non-periodic sounding reference signal resource belongs without alteration. Claim 12 An electronic device according to claim 1, wherein the processing circuit is further configured to select a method for re-determining a path loss reference signal for the first non-periodic sounding reference signal resource according to the following order of priority: determining based on the second MAC CE signaling; and determining based on information of the beam emission direction. Claim 13 An electronic device for wireless communication, comprising a processing circuit, wherein the processing circuit determines a method for a user device to re-determine a path loss reference signal for a first non-periodic sounding reference signal resource, wherein the beam emission direction is updated by a first MAC CE (medium access control-control element) signaling; An electronic device configured to determine additional operations to be performed based on the above-determined method, wherein the first non-periodic sounding reference signal resource belongs to a first sounding reference signal resource set, and the first path loss reference signal for the first sounding reference signal resource set is on a first serving cell, and the first path loss reference signal is suitable to serve as a path loss reference signal for the first non-periodic sounding reference signal resource when the first path loss reference signal is on a second serving cell - the first serving cell and the second serving cell are serving cells in a carrier aggregation -, the above-determined method comprises linking the first path loss reference signal to the second serving cell through a second MAC CE signaling, and the processing circuit is configured to generate the second MAC CE signaling and transmit the second MAC CE signaling to the user equipment. Claim 14 In paragraph 13, the determined method comprises, by the user equipment, re-determining the path loss reference signal based on information of a downlink reference signal or an uplink reference signal included in information of the beam emission direction, and the processing circuit is configured to determine that no further operation will be performed based on the determined method. Claim 15 In paragraph 13, the path loss reference signal for the first set of sounding reference signal resources to which the first non-periodic sounding reference signal resource belongs is a channel state information reference signal, and the determined method comprises updating a transmission configuration indication of the channel state information reference signal based on the second MAC CE signaling so that the channel state information reference signal becomes suitable to serve as a path loss reference signal for the first non-periodic sounding reference signal resource, and the processing circuit is configured to generate the second MAC CE signaling including the transmission configuration indication and to transmit the second MAC CE signaling to the user equipment. Claim 16 In paragraph 13, the path loss reference signal for a second sounding reference signal resource set different from the first sounding reference signal resource set is suitable to serve as a path loss reference signal for the first non-periodic sounding reference signal resource, and the determined method comprises transmitting the first non-periodic sounding reference signal resource to the second sounding reference signal resource set through the second MAC CE signaling, and the processing circuit is configured to generate the second MAC CE signaling and to transmit the second MAC CE signaling to the user equipment. Claim 17 delete Claim 18 In paragraph 13, the processing circuit is an electronic device configured to determine the method based on one or more of the information of the beam emission direction in the first MAC CE signaling, the path loss reference signal for each sounding reference signal resource set, and the signaling overhead. Claim 19 A method for wireless communication, comprising the step of determining a first non-periodic sounding reference signal resource in which the beam emission direction is updated by a first MAC CE (medium access control-control element) signaling; A method comprising the step of re-determining a path loss reference signal for a first non-periodic sounding reference signal resource based on information of the beam emission direction of the first non-periodic sounding reference signal resource in the first MAC CE signaling or the second MAC CE signaling, wherein the first non-periodic sounding reference signal resource belongs to a first sounding reference signal resource set, and the first path loss reference signal for the first sounding reference signal resource set is on a first serving cell, and the second MAC CE signaling is used to link the first path loss reference signal to a second serving cell, and the method further comprises the step of determining the first path loss reference signal on the second serving cell as a path loss reference signal for the first non-periodic sounding reference signal resource, and wherein the first serving cell and the second serving cell are serving cells in a carrier aggregation. Claim 20 delete Claim 21 delete

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