Method and apparatus for reporting Power Headroom Reports (PHRs).

Abstract

The present application relates to a method and apparatus for Power Headroom Report (PHR) reporting. An exemplary method of the present application includes receiving information indicating two joint or uplink common TCI states applicable in a slot of an activated Bandwidth Part (BWP) of a serving cell, and transmitting at least one PHR in a slot for the activated BWP of the serving cell, where the at least one PHR is determined at least according to PUSCH transmissions transmitted in the two joint or uplink common TCI states simultaneously in the slot.

Description

[Technical Field]

[0001] Embodiments of this application relate to wireless communication technology in general, and more particularly to a method and apparatus for power headroom report (PHR) reporting for multiple transmit / receive point (TRP) (also known as multi-TRP or M-TRP) transmission. [Background technology]

[0002] Multi-TRP / panel transmission has been introduced in new radios (NRs) since Release 16 (Rel-16). During multi-TRP transmission, two or more TRPs (or panels) may be used to transmit data to the user equipment (UE) to improve reliability and robustness. Furthermore, enhancements to the multiple input multiple output (MIMO) capabilities of NRs are constantly being discussed. The approved Work Item Description (WID) for MIMO in NR Rel-17 includes enhanced support for multi-TRP deployments, covering both frequency ranges (FR) 1 and FR2. The research topic here is to identify and specify capabilities to improve the reliability and robustness of channels other than the physical downlink shared channel (PDSCH), such as the physical downlink control channel (PDCCH), physical uplink shared channel (PUSCH), and physical uplink control channel (PUCCH), using multi-TRP and / or multi-panel transmissions, based on the reliability capabilities of Rel-16.

[0003] Regarding PUSCH, it has been agreed that two power headroom reports can be reported for multi-TRP based PUSCH. For example, in Rel-17, based on spatial relation information beam representation, up to two PHR reports are supported for M-TRP PUSCH, and the two PHR reports relate to two iterations of time-division multiplexing (TDM) of PUSCH transmissions using different beams, with one PHR supported based on a common beam framework. "Beams" can also be represented by spatial relation information, TCI status, RS, etc., and can be associated with them. However, simultaneous multi-panel uplink (UL) transmissions will be discussed in Rel-18. That is, two PUSCH transmissions, or one PUSCH transmission using two beams, can be transmitted simultaneously.

[0004] Therefore, there are still several technical issues that need to be resolved regarding PHR reporting for multiple TRP-based PUSCH, including, but not limited to, how to determine the actual PHR report in a single downlink control information (DCI) (S-DCI) based M-TRP when considering multiple-panel simultaneous uplink (UL) transmissions. [Prior art documents] [Non-patent literature]

[0005] [Non-Patent Document 1] TS38.213 [Non-Patent Document 2] TS38.321 [Non-Patent Document 3] TS38.214 [Overview of the project] [Problems that the invention aims to solve]

[0006] One of the objects of the embodiments of this application is to provide a technical solution for PHR reporting, in particular a method and apparatus for PHR reporting for multi-TRP transmission. [Means for solving the problem]

[0007] According to some embodiments of the present application, a user device (UE) is provided, the user device comprising a transceiver and a processor coupled to the transceiver, the processor configured to receive information via the transceiver indicating two joint or uplink common TCI states applicable in a slot of an activated bandwidth portion (BWP) of a serving cell, and to transmit at least one PHR via the transceiver in a slot for an activated BWP of a serving cell, the at least one PHR being determined in accordance with at least two PUSCH transmissions transmitted simultaneously in a slot under two joint or uplink common TCI states.

[0008] According to some embodiments of the present application, a method is provided which includes the steps of receiving information indicating two joint or uplink common TCI states applicable in a slot of an activated BWP of a serving cell, and transmitting at least one PHR in a slot for an activated BWP of a serving cell, wherein the at least one PHR is determined in accordance with at least one PUSCH transmission transmitted in a slot in two joint or uplink common TCI states simultaneously.

[0009] In some embodiments of this application, each frequency resource block of a PUSCH transmit is transmitted in one of two joint or uplink common TCI states, and only one PHR is transmitted in the slot, the PHR being determined by a first joint or uplink common TCI state among two joint or uplink common TCI states in the code point of a media access control (MAC) control element (CE) and the number of resource blocks of the PUSCH transmit associated with the first joint or uplink common TCI state.

[0010] In some embodiments of the present application, each frequency resource block of a PUSCH transmit is transmitted in a corresponding one of two joint or uplink common TCI states, and only one PHR is transmitted in a slot, the PHR being determined by the number of frequency resource blocks of the PUSCH transmit associated with the sounding reference signaling (SRS) resource set having the lower identifier (ID) of two SRS resource sets configured for the activated BWP, and the joint or uplink common TCI state associated with the SRS resource set having the lower ID.

[0011] In some embodiments of this application, each frequency resource block of a PUSCH transmit is transmitted in one of two corresponding joint or uplink common TCI states within a code point of the MAC CE, and only one PHR is transmitted in the slot, the PHR being determined by the joint or uplink common TCI state among the two joint or uplink common TCI states and the number of frequency resource blocks of the PUSCH transmit associated with the joint or uplink common TCI state. The PHR is transmitted in the PHR MAC CE, and at least one bit in the PHR MAC CE indicates which of the two joint or uplink common TCI states the PHR is associated with, or which of the two SRS resource sets configured for the activated BWP the PHR is associated with.

[0012] In some embodiments of this application, a portion of the layers of a PUSCH transmission is transmitted in a first joint or uplink common TCI state among two joint or uplink common TCI states within a MAC CE code point, another portion of the layers of a PUSCH transmission is transmitted in a second joint or uplink common TCI state among two joint or uplink common TCI states within a MAC CE code point, or each layer of a PUSCH transmission is transmitted in two joint or uplink common TCI states, with only one PHR transmitted in the slot, the PHR being determined by the number of resource blocks in the PUSCH transmission and the first joint or uplink common TCI state.

[0013] In some embodiments of this application, a portion of the layers of the PUSCH transmit is transmitted in a first joint or uplink common TCI state of two joint or uplink common TCI states within the code point of the MAC CE, another portion of the layers of the PUSCH transmit is transmitted in a second joint or uplink common TCI state of two joint or uplink common TCI states within the code point of the MAC CE, or each layer of the PUSCH transmit is transmitted in two joint or uplink common TCI states, with only one PHR transmitted in the slot, the PHR being determined depending on the number of frequency resource blocks of the PUSCH transmit and the joint or uplink common TCI state associated with the SRS resource set having the lower ID of two SRS resource sets configured for the activated BWP.

[0014] In some embodiments of this application, a portion of the layers of the PUSCH transmit is transmitted in a first joint or uplink common TCI state out of two joint or uplink common TCI states in the code point of the MAC CE, another portion of the layers of the PUSCH transmit is transmitted in a second joint or uplink common TCI state out of two joint or uplink common TCI states in the code point of the MAC CE, or each layer of the PUSCH transmit is transmitted in two joint or uplink common TCI states, with only one PHR transmitted in the slot, the PHR being determined based on the joint or uplink common TCI state out of two joint or uplink common TCI states and the number of frequency resource blocks of the PUSCH transmit. The PHR is transmitted in the PHR MAC CE, and at least one bit in the PHR MAC CE indicates which of the two joint or uplink common TCI states the PHR is associated with, or which of the two SRS resource sets configured for the activated BWP the PHR is associated with.

[0015] In some embodiments of the present application, each frequency resource block of a PUSCH transmit is transmitted in one of two joint or uplink common TCI states, and two PHRs in a slot are transmitted in a PHR MAC CE, the first PHR in the PHR MAC CE is determined according to the first joint or uplink common TCI state among the two joint or uplink common TCI states in the code point of the MAC CE and the number of resource blocks of the PUSCH transmit associated with the first joint or uplink common TCI state, and the second PHR in the PHR MAC CE is determined according to the second joint or uplink common TCI state among the two joint or uplink common TCI states in the code point of the MAC CE and the number of resource blocks of the PUSCH transmit associated with the second joint or uplink common TCI state.

[0016] In some embodiments of the present application, each frequency resource block of a PUSCH transmit is transmitted in a corresponding one of two joint or uplink common TCI states, and two PHRs in a slot are transmitted in a PHR MAC CE, the first PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the PUSCH transmit associated with the SRS resource set having the lower ID of two SRS resource sets configured for the activated BWP, and the joint or uplink common TCI state associated with the SRS resource set having the lower ID, the second PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the PUSCH transmit associated with the SRS resource set having the higher ID of two SRS resource sets, and the joint or uplink common TCI state associated with the SRS resource set having the higher ID.

[0017] In some embodiments of this application, a portion of the layers of a PUSCH transmission is transmitted in a first joint or uplink common TCI state among two joint or uplink common TCI states in the code point of the MAC CE, another portion of the layers of a PUSCH transmission is transmitted in a second joint or uplink common TCI state among two joint or uplink common TCI states in the code point of the MAC CE, or each layer of a PUSCH transmission is transmitted in two joint or uplink common TCI states, with two PHRs in the slot transmitted in the PHR MAC CE, the first PHR in the PHR MAC CE being determined according to the first joint or uplink common TCI state and the number of resource blocks of the PUSCH transmission, and the second PHR in the PHR MAC CE being determined according to the second joint or uplink common TCI state and the number of resource blocks of the PUSCH transmission.

[0018] In some embodiments of the present application, a part of the layer of PUSCH transmission is transmitted in the first joint or uplink common TCI state among two joint or uplink common TCI states within the code point of the MAC CE, another part of the layer of PUSCH transmission is transmitted in the second joint or uplink common TCI state among two joint or uplink common TCI states within the code point of the MAC CE, or each layer of PUSCH transmission is transmitted in two joint or uplink common TCI states. Two PHRs are transmitted in the PHR MAC CE in a slot. The first PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the PUSCH transmission and the joint or uplink common TCI state associated with the SRS resource set having a lower ID among two SRS resource sets configured for the activated BWP. The second PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the PUSCH transmission and the joint or uplink common TCI state associated with the SRS resource set having a higher ID among two SRS resource sets.

[0019] In some embodiments of the present application, the number of at least one PHR is determined according to radio resource control (RRC) signaling.

[0020] According to some further other embodiments of the present application, a radio access network (RAN) node is provided, the radio access network node comprising a transceiver and a processor coupled to the transceiver, the processor being configured to transmit, via the transceiver, information indicating two joint or uplink common TCI states applicable in a slot of an activated BWP of a serving cell, and to receive, via the transceiver, at least one PHR in a slot for an activated BWP of a serving cell, wherein the at least one PHR is determined at least according to PUSCH transmissions transmitted in two joint or uplink common TCI states simultaneously in the slot.

[0021] Embodiments of the present application provide a technical solution for PHR reporting for multi-TRP transmission that supports the PHR of multi-TRP-based PUSCH in a common beam framework, and thus can improve the reliability and robustness of multi-TRP-based PUSCH.

[0022] To explain how the advantages and features of the present application can be obtained, the description of the present application is made by referring to specific embodiments of the present application shown in the accompanying drawings. These drawings show only exemplary embodiments of the present application and are therefore not considered to limit the scope of the present application.

Brief Description of the Drawings

[0023] [Figure 1] It is a schematic diagram showing an exemplary wireless communication system according to an embodiment of the present application. [Figure 2] It is a flowchart of a method for PHR reporting according to some embodiments of the present application. [Figure 3] It is a block diagram of a device for PHR reporting according to some embodiments of the present application. [Figure 4] It is a block diagram of a device for PHR reporting according to some other embodiments of the present application. [Modes for carrying out the invention]

[0024] The detailed description of the accompanying drawings is intended to describe preferred embodiments of this application and is not intended to represent the only forms in which this application may be carried out. It should be understood that the same or equivalent functions may be achieved by different embodiments intended to be covered by the spirit and scope of this application.

[0025] Next, several embodiments of this application will be described in detail, examples of which are shown in the accompanying drawings. For ease of understanding, embodiments are provided based on specific network architectures and new service scenarios such as the Third Generation Partnership Project (3GPP®) 5G and 3GPP Long-Term Evolution (LTE) Release 8. As network architectures and new service scenarios develop, it is intended that all embodiments of this application will also be applicable to similar technical problems. Furthermore, terminology used in this application may change, but this will not affect the principles of this application.

[0026] A wireless communication system typically includes one or more base stations (BS) and one or more UEs. Furthermore, a BS may consist of one TRP (or panel) or multiple TRPs (or panels). A TRP can operate like a small BS. TRPs can communicate with each other via backhaul links. Such backhaul links may be ideal or non-ideal. The delay of an ideal backhaul link may be considered zero, while the delay of a non-ideal backhaul link can be tens of milliseconds, significantly longer than the delay of an ideal backhaul link, for example, approximately tens of milliseconds.

[0027] In a wireless communication system, a single TRP may be used to serve one or more UEs under the control of a BS. In various scenarios, a TRP may be referred to by different terms. Those skilled in the art should understand that as 3GPP and communication technology develop, the terminology used herein may change, but this will not affect the scope of this application. It should be understood that a TRP (or panel) configured for a BS may be transparent to the UE.

[0028] Figure 1 is a schematic diagram showing an exemplary wireless communication system 100 according to several embodiments of the present application.

[0029] Referring to Figure 1, the wireless communication system 100 may include a base station (BS) 101, TRPs 103 (e.g., a first TRP 103a and a second TRP 103b), and UEs 105 (e.g., a first UE 105a, a second UE 105b, and a third UE 105c). For simplicity, only one base station, two TRPs 103, and three UEs 105 are shown, but it should be noted that the wireless communication system 100 may include more or fewer communication devices or apparatus according to some other embodiments of this application.

[0030] In some embodiments of this application, BS101 may be referred to as an access point, access terminal, base, base unit, macrocell, node B, evolved node B (eNB), gNB, ng-eNB, home node B, relay node, or device, or may be described using other terms used in the art. UE105 (for example, the first UE105a, the second UE105b, and the third UE105c) may include, but are not limited to, computing devices, wearable devices, mobile devices, IoT devices, vehicles, etc.

[0031] A TRP103, for example, a first TRP103a and a second TRP103b, can communicate with a base station 101, for example, via a backhaul link. Each of the TRP103s can provide services to some or all of the UE105. As shown in Figure 1, the first TRP103a can provide services to several mobile stations (including the first UE105a, the second UE105b, and the third UE105c) within a service area or region (e.g., a cell or cell sector). The second TRP103b can provide services to several mobile stations (including the first UE105a, the second UE105b, and the third UE105c) within a service area or region (e.g., a cell or cell sector). The first TRP103a and the second TRP103b can communicate with each other, for example, via a backhaul link.

[0032] A multi-TRP transmission (or operation) may refer to at least two TRPs (or panels) to send data to a UE. As shown in Figure 1, both TRPs (e.g., the first TRP103a and the second TRP103b) may send data to the same UE105 (e.g., the first UE105a, the second UE105b, or the third UE105c), which is an exemplary scenario of multi-TRP transmission.

[0033] According to the WID approved for MIMO in NR Rel-18, Rel-17 will integrate the TCI framework, meaning that the common beam framework will be applied to multiple TRPs. Therefore, a maximum of two common beams will be indicated by DCI in PDCCH or MAC CE. Hereafter, DCI in PDCCH will also be referred to as DCI. However, according to the Rel-17 agreement, only one PHR will be supported in the common beam framework. Furthermore, PUSCH transmission considering simultaneous multi-panel UL transmission in S-DCI-based M-TRPs based on the common beam framework is planned to be considered in Rel-18.

[0034] Regarding PHR reporting related to multi-TRP pushes, it is agreed that the UE option function of a UE supporting multi-TRP pushes will calculate two PHRs (corresponding to at least one carrier component (CC) to which the M-TRP push iteration is applied), each associated with the first push opportunity to each TRP, and report two PHRs. In other words, two PHRs can be reported for a multi-TRP based push. An actual Type 1 PHR report (i.e., a PHR based on an actual push) is prepared in TS38.213 as shown below.

[0035] If the UE determines that the Type 1 power headroom report for an activated serving cell is based on actual push transmissions, then for each push transmission opportunity i on the active UL BWP b of the carrier f of serving cell c, the UE calculates the Type 1 power headroom report as follows:

number

number

[0036] The same specification also states the following: "UE is the first RS resource index q as described in Section 7.1.1 dTransmit the PUSCH associated with it in the active UL BWP b of carrier f of serving cell c in slot n. When twoPHRMode is provided, the UE, as described in Section 7.1.1, uses the second RS resource index q d to provide a type 1 power headroom report for the PUSCH repetition associated with it. Here, - If the UE provides a type 1 power headroom report for the actual PUSCH repetition associated with the first RS resource index q d - When the UE transmits a PUSCH repetition associated with the second RS resource index q in slot n - If the UE transmits a PUSCH repetition associated with the second RS resource index q in slot n d - When the UE transmits a PUSCH repetition associated with the second RS resource index q overlapping with slot n, the UE provides a type 1 power headroom report for the first actual PUSCH repetition associated with the second RS resource index q d - Otherwise, the UE provides a type 1 power headroom report for the reference PUSCH transmission associated with the second RS resource index q - Otherwise, if the UE provides a type 1 power headroom report for the reference PUSCH transmission associated with the first RS resource index q d - Otherwise, the UE provides a type 1 power headroom report for the reference PUSCH transmission associated with the second RS resource index q - Otherwise, if the UE provides a type 1 power headroom report for the reference PUSCH transmission associated with the first RS resource index q d - When the UE provides a type 1 power headroom report for the reference PUSCH transmission associated with the first RS resource index q, the UE provides a type 1 power headroom report for the reference PUSCH transmission associated with the second RS resource index q d - Otherwise, the UE provides a type 1 power headroom report for the reference PUSCH transmission associated with the second RS resource index q. "

[0037] It can be seen from the specification that two PHRs can be supported in S-DCI-based multi-TRP PUSCH transmission where different repetitions of PUSCH transmission are sent using different beams. If two PHR modes are not configured, only one PHR is reported.

[0038] In conclusion, there is no established method for reporting PHRs in S-DCI-based M-TRPs with a common beam framework that considers simultaneous multi-panel UL transmissions, and this will be discussed in the future. For example, there are two repetitions of a PUSCH transmission, or two subsets of layers of a PUSCH transmission transmitted in the same symbol within a slot, such as frequency division multiplexing (FDM) or spatial division multiplexing (SDM), and there are methods for determining a single actual PHR when only one PHR can be reported, and for determining the order of two actual PHRs in the PHR MAC CE when two PHRs can be reported. All of these issues are new compared to the Rel-17 PHR extensions.

[0039] To solve at least the technical problems described above, embodiments of this application provide a technical solution for PHR reporting, for example, a method and apparatus for PHR reporting of a multi-TRP based PUSCH. In this specification, only actual PHRs are described, and with regard to actual PHRs specified in the specification, PUSCH is always referred to as an "actual PUSCH transmission".

[0040] Figure 2 is a flowchart of a PHR reporting method according to several embodiments of this application. While the method is shown at the system level by a remote (or UE) UE and a network (or BS) BS, those skilled in the art will understand that the remote implementation and the network implementation can be implemented separately and incorporated by other devices having similar functionality. Furthermore, transmission or reception failures are not considered in the illustrated embodiments of this application.

[0041] Referring to Figure 2, the network side, for example, the gNB, may in step 201 transmit information indicating two joint or uplink common TCI states to the remote side, for example, the UE, and the UE receives information indicating two joint or uplink common TCI states in step 202. For example, the gNB may indicate two joint or uplink common TCI states within a code point of the MAC CE that activates the common TCI state (for example, a TCI code point). The DCI may be further indicated to the UE by the gNB, with the TCI code point being indicated by the DCI if the MAC CE contains multiple code points, and being indicated by the MAC CE if the MAC CE contains only one code point. From this perspective, two joint or uplink common TCI states within a code point of the MAC CE are indicated by either the DCI or the MAC CE. In the case of an S-DCI-based M-TRP PUSCH, at least one code point of the MAC CE that activates a joint or uplink common TCI state contains two joint or uplink common TCI states. Two joint or uplink common TCI states are identified, respectively, as the first joint or uplink common TCI state and the second joint or uplink common TCI state within the code point.

[0042] In the case of a UE, the two indicated joint or uplink common TCI states will be applicable to multiple slots of the activated BWP in the cell or carrier. For slots in the activated BWP where two joint or uplink common TCI states are applicable, the UE will calculate (or determine) at least one PHR for the slot for the activated BWP in response to a PHR trigger event indicated by a higher layer in the UE, such as the MAC layer. The at least one PHR is at least one actual type 1 PHR and is determined at least according to a PUSCH transmission sent simultaneously in the slot with two joint or uplink common TCI states. In step 204, the UE will transmit or report the calculated at least one PHR to the gNB, for example, in a PHR MAC CE, for example, by a PUSCH transmission. Thus, in step 205, the gNB will receive at least one PHR contained in, for example, a PHR MAC CE.

[0043] For example, if there is at least one PUSCH transmission within a slot that satisfies the timeline for determining the actual PHR as specified in TS38.213 below, then it is determined that the actual PHR is reported. The UE determines whether the power headroom report for an activated serving cell [11, TS38.321] is based on actual transmissions, or, if reported in a PUSCH triggered by a first DCI format, whether it is based on a reference format based on upper-layer signaling and downlink control information for configured grant and periodic / semi-persistent sounding reference signal transmissions received by the UE, including the period from when the power headroom report was triggered to a PDCCH monitoring opportunity in which the UE detected a first DCI format that schedules the first transmission of the transport block, and including that. Otherwise, the UE determines whether the power headroom report is based on a reference format based on upper-layer signaling and downlink control information for configured grant and periodic / semi-persistent sounding reference signal transmissions. Determine whether the headroom report is based on actual transmissions or on a reference format based on upper-layer signaling and downlink control information of configured grants and periodic / semi-persistent sounding reference signal transmissions received by the UE, up to the value obtained by subtracting T'proc,2=Tproc,2 from the first uplink symbol of the configured PUSCH transmission, where Tproc,2 is determined according to [6, TS38.214], assuming d2,1=1, d2,2=0, and if a power headroom report is reported in PUSCH using a configured grant, μDL corresponds to the subcarrier interval of the active downlink BWP of the scheduling cell of the configured grant.

[0044] The total number of PHRs reported within a slot is determined by higher-layer signaling, such as RRC signaling. The UE determines, according to the RRC signaling, whether to report one Type 1 PHR or two or more Type 1 PHRs for an activated BWP in a serving cell. For example, if the parameter "twoPHRMode" is enabled in a serving cell, two PHRs will be reported for the serving cell; otherwise, only one PHR will be reported. Therefore, in some scenarios, at least one virtual PHR may be reported in addition to at least one actual PHR. For example, the RRC signaling might indicate that two PHRs will be reported in a slot for an activated BWP, i.e., the parameter "twoPHRMode" is enabled, but only one actual PHR is determined in the UE, and then the virtual PHR is included in the PHR MAC CE along with the actual PHR. As mentioned above, we will only discuss actual Type 1 PHRs, i.e., actual PHRs determined based on actual PUSCH transmissions under the Common Beam Framework.

[0045] Specifically, considering that S-DCI-based M-TRP supports simultaneous uplink transmission of multiple panels, and that the DCI or MAC CE of the activated BWP of the serving cell indicates a common TCI state for two joints or uplinks, we will describe in detail the scheme for PHR reporting in various scenarios according to several embodiments of this application.

[0046] Scenario 1: Only one PHR is reported. In some scenarios, the UE is instructed, for example, by RRC signaling, to report only one PHR. For example, the parameter "twoPHRMode" is disabled or not configured. That is, the UE needs to provide one type 1 PHR for the activated BWP of the serving cell in the slot in accordance with the PHR trigger event. The PHR can be reported in the conventional procedure of the PHR MAC CE as specified in TS38.213.

[0047] If the earliest initiated push transmission within a slot is transmitted in a single joint or uplink common TCI state, the actual PHR of the serving cell is calculated according to the same earliest initiated push transmission as in the conventional procedure.

[0048] If the earliest initiated PUSCH transmit within a slot is transmitted simultaneously in two joint or uplink common TCI states within a MAC CE code point, there are three exemplary cases in which PUSCH transmits are transmitted simultaneously in two joint or uplink common TCI states, namely FDM-based PUSCH, SDM-based PUSCH, and Single Frequency Network (SFN)-based PUSCH.

[0049] Case 1: FDM-based PUSCH In Case 1, the PUSCH transmit is transmitted in two joint or uplink common TCI states within the slot, and each frequency resource block of the PUSCH transmit is transmitted in one of the corresponding two joint or uplink common TCI states.

[0050] According to some embodiments of this application, one actual PHR is determined depending on a first joint or uplink common TCI state and the number of frequency resource blocks associated with the first joint or uplink common TCI state.

[0051] For example, a UE needs to provide a type 1 PHR in slot n for an activated uplink BWP of a serving cell, according to a PHR trigger event. In a slot that satisfies a timeline for determining the actual PHR in the slot, there is one PUSCH transmission sent in an FDM manner with two uplink common TCI states, namely a first uplink common TCI state, e.g., TCI state 1, and a second uplink common TCI state, e.g., TCI state 2. Furthermore, the PUSCH transmission has two FDM parts, the first and second parts having a K1 resource block sent in TCI state 1 and a K2 resource block sent in TCI state 2, respectively. Then the actual PHR of the activated BWP in the slot is based on K1 and TCI state 1.

[0052] According to some other embodiments of this application, the sole actual PHR would be determined by the number of frequency resource blocks associated with the first SRS resource set of two SRS resource sets and the joint or uplink common TCI state associated with the first SRS resource set. The two SRS resource sets are configured for the activated BWP of the serving cell, with the SRS resource set having a lower ID being identified as the first SRS resource set and the SRS resource set having a higher ID being identified as the second SRS resource set. There is a one-to-one mapping or association relationship between the two SRS resource sets and the two joint or uplink common TCI states, which may be configured by RRC signaling or indicated by MAC CE or DCI, etc. For example, the first SRS resource set may be associated with the second joint or uplink common TCI state, and the second SRS resource set may be associated with the first joint or uplink common TCI state. In another example, the first SRS resource set is associated with a first joint or uplink common TCI state, and the second SRS resource set is associated with a second joint or uplink common TCI state. Therefore, all frequency resource blocks for push transmissions associated with the first SRS resource set are transmitted in one of the two joint or uplink common TCI states, and all frequency resource blocks for push transmissions associated with the second SRS resource set are transmitted in the other of the two joint or uplink common TCI states.

[0053] For example, a UE needs to provide a type 1 PHR in slot n for an activated uplink BWP of a serving cell, according to a PHR trigger event. Within a slot that satisfies a timeline for determining the actual PHR within the slot, there is one PUSCH transmission sent in an FDM manner with two uplink common TCI states, namely a first uplink common TCI state, e.g., TCI state 1, and a second uplink common TCI state, e.g., TCI state 2. Furthermore, the PUSCH transmission has two FDM parts: the first part has a K1 resource block associated with a second SRS resource set, and the second part has a K2 resource block associated with the first resource set. Furthermore, the first SRS resource set is associated with a second TCI state, e.g., TCI state 2, and the second SRS resource set is associated with a first TCI state, e.g., TCI state 1. The actual PHR for the activated BWP in the slot is then based on K2 and TCI state 2.

[0054] According to some yet other embodiments of this application, only one actual PHR is determined according to a joint or uplink common TCI state among two joint or uplink common TCI states and the number of frequency resource blocks associated with the corresponding joint or uplink common TCI state. The PHR MAC CE includes at least one bit to indicate which joint or uplink common TCI state or which SRS resource set the actual PHR is associated with. For example, if the bit in the PHR MAC CE is set to "0", it indicates that the actual PHR is associated with a first joint or uplink common TCI state, and if it is set to "1", it indicates that the actual PHR is associated with a second joint or uplink common TCI state, and vice versa. As another example, if the bit in the PHR MAC CE is set to "0", it indicates that the actual PHR is associated with one joint or uplink common TCI state associated with a first SRS resource set, and if it is set to "1", it indicates that the actual PHR is associated with another joint or uplink common TCI state associated with a second SRS resource set, and vice versa.

[0055] For example, a UE needs to provide a type 1 PHR in slot n for an activated uplink BWP of a serving cell, according to a PHR trigger event. In a slot that satisfies a timeline for determining the actual PHR in the slot, there is one PUSCH transmission sent in an FDM manner with two uplink common TCI states, namely a first uplink common TCI state, e.g., TCI state 1, and a second uplink common TCI state, e.g., TCI state 2. Furthermore, the PUSCH transmission has two FDM parts, the first and second parts having a K1 resource block sent in TCI state 1 and a K2 resource block sent in TCI state 2, respectively. If the actual PHR for the activated BWP in the slot is based on K2 and TCI state 2, the corresponding bit in the PHR MAC CE is set to "1", indicating that the actual PHR is associated with the second TCI state.

[0056] Case 2: SDM-based PUSCH In Case 2, the PUSCH transmission is transmitted in two joint or uplink common TCI states within the slot, with some layers of the PUSCH transmission transmitted in the first joint or uplink common TCI state, and the remaining layers of the PUSCH transmission transmitted in the second joint or uplink common TCI state. That is, some of the layers of the PUSCH transmission are associated with the first joint or uplink common TCI state, and other parts of the layers of the PUSCH transmission are associated with the second joint or uplink common TCI state.

[0057] According to some embodiments of this application, the actual PHR is determined depending on the number of frequency resource blocks of the push transmission and the first joint or uplink common TCI state.

[0058] According to some other embodiments of this application, the actual PHR is determined depending on the number of frequency resource blocks of the push transmit and the joint or uplink common TCI state among two joint or uplink common TCI states associated with a first SRS resource set among two SRS resource sets configured for the activated BWP of the serving cell. The SRS resource set with the lower ID is identified as the first SRS resource set, and the SRS resource set with the higher ID is identified as the second SRS resource set. There is a one-to-one mapping or association relationship between the two SRS resource sets and the two joint or uplink common TCI states, which may be configured by RRC signaling or indicated by MAC CE or DCI, etc. For example, the first SRS resource set is associated with the second joint or uplink common TCI state, and the second SRS resource set is associated with the first joint or uplink common TCI state. In another example, the first SRS resource set is associated with the first joint or uplink common TCI state, and the second SRS resource set is associated with the second joint or uplink common TCI state. Thus, all parts of the layer of the PUSCH transmission associated with the first SRS resource set are transmitted in one of the two joint or uplink common TCI states, and all other parts of the layer of the PUSCH transmission associated with the second SRS resource set are transmitted in the other joint or uplink common TCI state.

[0059] According to some yet other embodiments of this application, the actual PHR is determined according to the joint or uplink common TCI state among two joint or uplink common TCI states and the number of frequency resource blocks of the PUSCH transmit. Similarly, the PHR MAC CE includes at least one bit to indicate which joint or uplink common TCI state or which SRS resource set the actual PHR is associated with. For example, if the bit in the PHR MAC CE is set to "00", it indicates that the actual PHR is associated with a first joint or uplink common TCI state, and if it is set to "01", it indicates that the actual PHR is associated with a second joint or uplink common TCI state, and vice versa. As another example, if the bits in the PHR MAC CE are set to "00" and "01", it indicates that the actual PHR is associated with a joint or uplink common TCI state associated with a first and a second SRS resource set, respectively, and vice versa.

[0060] Case 3: SFN-based PUSCH In Case 3, the PUSCH transmission is transmitted in a two-joint or uplink common TCI state within the slot, and each layer of the PUSCH transmission is transmitted in a two-joint or uplink common TCI state. For SFN-based PUSCH, the solution to report one PHR is the same as for SDM-based PUSCH.

[0061] For example, according to some embodiments of this application, the actual PHR is determined depending on the number of frequency resource blocks of the PUSCH transmission and the first joint or uplink common TCI state.

[0062] According to some other embodiments of this application, the actual PHR is determined depending on the number of frequency resource blocks of the push transmit and the joint or uplink common TCI state of two joint or uplink common TCI states associated with the first SRS resource set of two SRS resource sets. The two SRS resource sets are configured for the activated BWP of the serving cell, with the SRS resource set having a lower ID being identified as the first SRS resource set and the SRS resource set having a higher ID being identified as the second SRS resource set. There is a one-to-one mapping or association relationship between the two SRS resource sets and the two joint or uplink common TCI states, which may be configured by RRC signaling or indicated by MAC CE or DCI, etc. The push transmit is associated with both SRS resource sets simultaneously.

[0063] According to some yet other embodiments of this application, the actual PHR is determined according to one of two joint or uplink common TCI states and the number of frequency resource blocks for a push transmit. Similarly, the PHR MAC CE includes at least one bit to indicate which joint or uplink common TCI state or which SRS resource set the actual PHR is associated with.

[0064] Scenario 2: Two PHRs are reported. In some scenarios, the UE is instructed to report two PHRs, for example, by RRC signaling. For example, the parameter "twoPHRMode" is enabled. That is, the UE needs to provide two Type 1 PHRs for the activated BWP of the serving cell in the slot, according to the PHR trigger event. The two PHRs can be reported in the conventional procedure of the PHR MAC CE, as specified in TS38.213. Therefore, in addition to how to determine the two actual PHRs, it is also necessary to solve how to determine the order of the two actual PHRs for the activated BWP of the serving cell in the PHR MAC CE.

[0065] If the earliest initiated PUSCH transmission within a slot is transmitted simultaneously in a MAC CE code point joint or uplink common TCI state, two actual PHRs will be determined depending on the actual PHR transmission. Similarly, there are three cases: FDM-based PUSCH, SDM PUSCH, and SFN-based PUSCH.

[0066] Case 1: FDM-based PUSCH In Case 1, the PUSCH transmit is transmitted in two joint or uplink common TCI states within the slot, and each frequency resource block of the PUSCH transmit is transmitted in one of the corresponding two joint or uplink common TCI states.

[0067] According to some embodiments of this application, a first actual PHR in the PHR MAC CE is determined depending on a first joint or uplink common TCI state and the number of frequency resource blocks associated with the first joint or uplink common TCI state, and a second actual PHR in the PHR MAC CE is determined depending on a second joint or uplink common TCI state and the number of frequency resource blocks associated with the second joint or uplink common TCI state.

[0068] According to some other embodiments of this application, the first actual PHR in the PHR MAC CE is determined according to the number of frequency resource blocks associated with the first SRS resource set of two SRS resource sets and the joint or uplink common TCI state associated with the first SRS resource set, and the second actual PHR in the PHR MAC CE is determined according to the number of frequency resource blocks associated with the second SRS resource set of two SRS resource sets and the joint or uplink common TCI state associated with the second SRS resource set. The two SRS resource sets are configured for the activated BWP of the serving cell, with the SRS resource set having a lower ID being identified as the first SRS resource set and the SRS resource set having a higher ID being identified as the second SRS resource set. There is a one-to-one mapping or association relationship between the two SRS resource sets and the two joint or uplink common TCI states, which may be configured by RRC signaling or indicated by MAC CE or DCI, etc. Therefore, all frequency resource blocks for push transmissions associated with the first SRS resource set are transmitted in one of the two joint or uplink common TCI states, and all frequency resource blocks for push transmissions associated with the second SRS resource set are transmitted in the other of the two joint or uplink common TCI states.

[0069] Case 2: SDM-based PUSCH In Case 2, the PUSCH transmission is transmitted in two joint or uplink common TCI states within the slot, with some layers of the PUSCH transmission transmitted in the first joint or uplink common TCI state, and the remaining layers of the PUSCH transmission transmitted in the second joint or uplink common TCI state. That is, some of the layers of the PUSCH transmission are associated with the first joint or uplink common TCI state, and other parts of the layers of the PUSCH transmission are associated with the second joint or uplink common TCI state.

[0070] According to some embodiments of this application, a first PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the PUSCH transmission and the first joint or uplink common TCI state, and a second PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the PUSCH transmission and the second joint or uplink common TCI state.

[0071] For example, a UE needs to provide two Type 1 PHRs in slot n for an activated uplink BWP of a serving cell, according to a PHR trigger event. In a slot that satisfies a timeline for determining the actual PHRs in the slot, there is a push transmit with four layers sent in an SDM manner, i.e., a first uplink common TCI state, e.g., TCI state 1, and a second uplink common TCI state, e.g., TCI state 2. Furthermore, the first two layers of the push transmit are sent in TCI state 1, and the last two layers of the push transmit are sent in TCI state 2. The number of resource blocks in the push transmit is K. Then, the first actual PHR for the activated BWP in the slot is based on K and TCI state 1, and the second actual PHR for the serving cell in the slot is based on K and TCI state 2.

[0072] According to some other embodiments of this application, the first PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the push transmit and the joint or uplink common TCI state of two joint or uplink common TCI states associated with the first SRS resource set of two SRS resource sets, and the second PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the push transmit and the other joint or uplink common TCI state associated with the second SRS resource set of two SRS resource sets. The two SRS resource sets are configured for the activated BWP of the serving cell SRS resource set, with the SRS resource set having a lower ID being identified as the first SRS resource set and the SRS resource set having a higher ID being identified as the second SRS resource set. There is a one-to-one mapping or association relationship between the two SRS resource sets and the two joint or uplink common TCI states, which may be configured by RRC signaling or indicated by MAC CE or DCI, etc. All parts of the PUSCH transmission layer associated with the first SRS resource set are transmitted in one of two joint or uplink common TCI states, and all other parts of the PUSCH transmission layer associated with the second SRS resource set are transmitted in the other joint or uplink common TCI state.

[0073] For example, a UE needs to provide two Type 1 PHRs in slot n for an activated uplink BWP of a serving cell, according to a PHR trigger event. In a slot that satisfies the timeline for determining the actual PHRs in the slot, there is a push transmit with four layers sent in an SDM manner, i.e., a first uplink common TCI state, e.g., TCI state 1, and a second uplink common TCI state, e.g., TCI state 2. Furthermore, the push transmit is associated with two SRS resource sets, the first two layers of the push transmit are associated with the second SRS resource set, and the last two layers of the push transmit are associated with the first SRS resource set. Thus, the first SRS resource set is associated with TCI state 2, and the second SRS resource set is associated with TCI state 1, respectively. Then, the first actual PHR in the slot is based on K and TCI state 2, and the second actual PHR in the slot is based on K and TCI state 1.

[0074] Case 3: SFN-based PUSCH In Case 3, the PUSCH transmission is transmitted in a two-joint or uplink common TCI state within the slot, and each layer of the PUSCH transmission is transmitted in a two-joint or uplink common TCI state. For SFN-based PUSCH, a solution can be applied that reports two PHRs, similar to SFN-based PUSCH.

[0075] According to some embodiments of this application, a first PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the PUSCH transmission and the first joint or uplink common TCI state, and a second PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the PUSCH transmission and the second joint or uplink common TCI state.

[0076] According to some other embodiments of this application, the first PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the push transmit and the joint or uplink common TCI state of two joints or uplink common TCI states associated with the first SRS resource set of two SRS resource sets, and the second PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the push transmit and the other joint or uplink common TCI state of two joints or uplink common TCI states associated with the second SRS resource set of two SRS resource sets. The two SRS resource sets are configured for the activated BWP of the serving cell, with the SRS resource set having a lower ID being identified as the first SRS resource set and the SRS resource set having a higher ID being identified as the second SRS resource set. There is a one-to-one mapping or association relationship between two SRS resource sets and two joint or uplink common TCI states, which can be established by RRC signaling or indicated by MAC CE or DCI, etc. A push transmission is associated with both SRS resource sets simultaneously.

[0077] Those skilled in the art will understand that while a maximum of two PHRs are shown, with the development of 3GPP, the shown scheme can also be applied to scenarios reporting two or more PHRs, and that the solutions of this application are not limited to any particular embodiment.

[0078] In addition to this method, the embodiments of this application also propose a device for PHR reporting.

[0079] For example, Figure 3 is a block diagram of a PHR reporting apparatus 300 according to several embodiments of this application.

[0080] As shown in Figure 3, the device 300 may include at least one non-temporary computer-readable medium 301, at least one receiving circuit 302, at least one transmitting circuit 304, and at least one processor 306 coupled to the non-temporary computer-readable medium 301, the receiving circuit 302, and the transmitting circuit 304. The at least one processor 306 may be a CPU, DSP, microprocessor, etc. The device 300 may be a RAN node, such as a gNB, or a remote device, such as a UE, configured to perform the methods shown above, etc.

[0081] In this figure, elements such as at least one processor 306, a transmitting circuit 304, and a receiving circuit 302 are described in the singular form, but the plural form is also intended unless a restriction to the singular form is explicitly stated. In some embodiments of this application, the receiving circuit 302 and the transmitting circuit 304 can be combined into a single device such as a transceiver. In certain embodiments of this application, the apparatus 300 may further include an input device, memory, and / or other components.

[0082] In some embodiments of this application, a non-temporary computer-readable medium 301 may store computer-executable instructions for causing a processor to implement the methods relating to the network device as described above. For example, once the computer-executable instructions are executed, the processor 306 is caused to interact with the receiving circuit 302 and the transmitting circuit 304 to perform the steps relating to the RAN node or network device, such as the gNB described above.

[0083] In some embodiments of this application, a non-temporary computer-readable medium 301 may store computer-executable instructions for the processor to implement the methods relating to the UE as described above. For example, once the computer-executable instructions are executed, the processor 306 is caused to interact with the receiving circuit 302 and the transmitting circuit 304 to perform the steps relating to the UE as described above.

[0084] Figure 4 is a block diagram of a PHR reporting apparatus according to some other embodiments of this application.

[0085] Referring to Figure 4, the device 400, for example, a gNB or UE, may include at least one processor 402 and at least one transceiver 404 connected to the at least one processor 402. The transceiver 404 may include at least one independent receiving circuit 406 and transmitting circuit 408, or at least one integrated receiving circuit 406 and transmitting circuit 408. The at least one processor 402 may be a CPU, DSP, microprocessor, etc.

[0086] According to some embodiments of the present application, when the device 400 is a remote device, e.g., a UE, the processor is configured to receive via a transceiver information indicating two joint or uplink common TCI states applicable in a slot of an activated BWP of a serving cell, and to transmit via the transceiver at least one PHR in a slot for an activated BWP of a serving cell, the at least one PHR being determined in accordance with at least one PUSCH transmission transmitted in a slot with two joint or uplink common TCI states simultaneously.

[0087] According to some other embodiments of the present application, if the device 400 is a RAN node, for example a gNB, the processor may be configured to transmit information via a transceiver indicating two joint or uplink common TCI states applicable in a slot of an activated BWP of a serving cell, and to receive via a transceiver at least one PHR in a slot for an activated BWP of a serving cell, the at least one PHR being determined in accordance with at least a PUSCH transmission transmitted in a slot with two joint or uplink common TCI states simultaneously.

[0088] The method according to the embodiments of this application may also be implemented on a programmed processor. However, the controller, flowchart, and module may also be implemented on a general-purpose or dedicated computer, a programmed microprocessor or microcontroller and peripheral integrated circuit elements, integrated circuits, discrete element circuits, or other hardware electronic or logic circuits, programmable logic devices, etc. In general, any device capable of implementing the flowchart shown in the drawings may be used to implement the processor function of this application. For example, embodiments of this application provide a device including a processor and memory. Computer programmable instructions for implementing the method are stored in the memory, and the processor is configured to execute computer programmable instructions to implement the method. The method may be the method described above, or it may be any other method according to the embodiments of this application.

[0089] In alternative embodiments, the method according to the embodiments of this application is preferably implemented on a non-temporary computer-readable storage medium storing computer-programmable instructions. The instructions are preferably executed by a computer-executable component, preferably integrated with a network security system. The non-temporary computer-readable storage medium may be any suitable computer-readable medium, such as RAM, ROM, flash memory, EEPROM, optical storage devices (CD or DVD), hard drives, floppy drives, or any suitable device. The computer-executable component is preferably a processor, but the instructions may be executed by any suitable dedicated hardware device, either alternatively or additionally. For example, embodiments of this application provide a non-temporary computer-readable storage medium storing computer-programmable instructions. The computer-programmable instructions are configured to perform the method described above, or other methods according to embodiments of this application.

[0090] Furthermore, in this disclosure, the terms “includes,” “including,” or any other variation thereof are intended to cover non-exclusive inclusion, and a process, method, article, or apparatus containing a list of elements may not contain only those elements, but may also contain other elements not expressly listed or specific to such process, method, article, or apparatus. Elements beginning with “a,” “an,” etc., do not, unless further restricted, exclude the presence of additional identical elements in a process, method, article, or apparatus containing that element. Also, the term “another” is defined as at least two or more. Terms such as “having” as used herein are defined as “including.” [Explanation of symbols]

[0091] 100 Wireless Communication Systems 101 Base station (BS) 103 TRP 103a First TRP 103b Second TRP 105 UE 105a First UE 105b Second UE 105c Third UE 300 equipment 301 Non-temporary computer-readable media 302 Receiving Circuit 304 Transmitter Circuit 306 Processors 400 equipment 402 Processors 404 Transceiver 406 Receiving Circuit 408 Transmitter Circuit

Claims

1. User equipment (UE), Transceiver and, The transceiver is coupled to a processor, and the processor is The transceiver receives information indicating two joint or uplink common transmit setting instruction (TCI) states applicable to the activated bandwidth portion (BWP) slot of the serving cell, Transmitting at least one Power Headroom Report (PHR) in the slot for the activated BWP of the serving cell via the transceiver, wherein the at least one PHR is determined in accordance with at least one Physical Uplink Shared Channel (PUSCH) transmission transmitted in the slot under the two joint or uplink common TCI conditions. User equipment (UE) configured to perform the following actions.

2. Each frequency resource block of the PUSCH transmission is transmitted in one of the two joint or uplink common TCI states, and only one PHR is transmitted in the slot. The UE according to claim 1, wherein the PHR is determined according to a first joint or uplink common TCI state among the two joint or uplink common TCI states and the number of resource blocks of the PUSCH transmission associated with the first joint or uplink common TCI state.

3. Each frequency resource block of the PUSCH transmission is transmitted in one of the two joint or uplink common TCI states, and only one PHR is transmitted in the slot. The UE according to claim 1, wherein the PHR is determined in accordance with the number of frequency resource blocks of the push transmission associated with the sounding reference signaling (SRS) resource set having a lower identifier (ID) among two SRS resource sets configured for the activated BWP, and the joint or uplink common TCI state associated with the SRS resource set having a lower ID.

4. Each frequency resource block of the PUSCH transmission is transmitted in one of the two joint or uplink common TCI states, and only one PHR is transmitted in the slot. The UE according to claim 1, wherein the PHR is determined in accordance with a joint or uplink common TCI state among the two joint or uplink common TCI states and the number of frequency resource blocks of the PUSCH transmit associated with the joint or uplink common TCI state.

5. A portion of the PUSCH transmission layer is transmitted in a first joint or uplink common TCI state among the two joint or uplink common TCI states, another portion of the PUSCH transmission layer is transmitted in a second joint or uplink common TCI state among the two joint or uplink common TCI states, or each layer of the PUSCH transmission is transmitted in a two joint or uplink common TCI state, and only one PHR is transmitted in the slot. The UE according to claim 1, wherein the PHR is determined in accordance with the number of resource blocks of the PUSCH transmission and the first joint or uplink common TCI state.

6. A portion of the PUSCH transmission layer is transmitted in a first joint or uplink common TCI state among the two joint or uplink common TCI states, another portion of the PUSCH transmission layer is transmitted in a second joint or uplink common TCI state among the two joint or uplink common TCI states, or each layer of the PUSCH transmission is transmitted in a two joint or uplink common TCI state, and only one PHR is transmitted in the slot. The UE according to claim 1, wherein the PHR is determined in accordance with the number of frequency resource blocks of the PUSCH transmission and the joint or uplink common TCI state associated with the SRS resource set having the lower identifier (ID) of two sounding reference signaling (SRS) resource sets configured for the activated BWP.

7. A portion of the layer of the PUSCH transmission is transmitted in the first joint or uplink common TCI state among the two joint or uplink common TCI states, another portion of the layer of the PUSCH transmission is transmitted in the second joint or uplink common TCI state among the two joint or uplink common TCI states, or each layer of the PUSCH transmission is transmitted in the two joint or uplink common TCI states, and only one PHR is transmitted in the slot. The UE according to claim 1, wherein the PHR is determined in accordance with the joint or uplink common TCI state among the two joint or uplink common TCI states and the number of frequency resource blocks of the PUSCH transmit.

8. Each frequency resource block of the PUSCH transmission is transmitted in the corresponding one of the two joint or uplink common TCI states, and two PHRs are transmitted in the slot in the PHR medium access control (MAC) control element (CE), The UE according to claim 1, wherein a first PHR in the PHR MAC CE is determined according to a first joint or uplink common TCI state among the two joint or uplink common TCI states and the number of resource blocks of the PUSCH transmission associated with the first joint or uplink common TCI state, and a second PHR in the PHR MAC CE is determined according to a second joint or uplink common TCI state among the two joint or uplink common TCI states and the number of resource blocks of the PUSCH transmission associated with the second joint or uplink common TCI state.

9. Each frequency resource block of the PUSCH transmission is transmitted in the corresponding one of the two joint or uplink common TCI states, and two PHRs are transmitted in the slot in the PHR medium access control (MAC) control element (CE), The UE according to claim 1, wherein the first PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the PUSCH transmission associated with the sounding reference signaling (SRS) resource set having a lower identifier (ID) among two SRS resource sets configured for the activated BWP, and the joint or uplink common TCI state associated with the SRS resource set having the lower ID, and the second PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the PUSCH transmission associated with the SRS resource set having a higher ID among the two SRS resource sets, and the joint or uplink common TCI state associated with the SRS resource set having the higher ID.

10. A portion of the layer of the PUSCH transmission is transmitted in the first joint or uplink common TCI state of the two joint or uplink common TCI states, another portion of the layer of the PUSCH transmission is transmitted in the second joint or uplink common TCI state of the two joint or uplink common TCI states, or each layer of the PUSCH transmission is transmitted in the two joint or uplink common TCI states, and two PHRs are transmitted in the slot in the PHR MAC CE. The UE according to claim 1, wherein a first PHR in the PHR MAC CE is determined according to the first joint or uplink common TCI state and the number of resource blocks for the PUSCH transmission, and a second PHR in the PHR MAC CE is determined according to the second joint or uplink common TCI state and the number of resource blocks for the PUSCH transmission.

11. A portion of the layer of the PUSCH transmission is transmitted in the first joint or uplink common TCI state of the two joint or uplink common TCI states, another portion of the layer of the PUSCH transmission is transmitted in the second joint or uplink common TCI state of the two joint or uplink common TCI states, or each layer of the PUSCH transmission is transmitted in the two joint or uplink common TCI states, and two PHRs are transmitted in the slot in the PHR MAC CE. The UE according to claim 1, wherein the first PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the PUSCH transmission and the joint or uplink common TCI state associated with the sounding reference signaling (SRS) resource set having the lower identifier (ID) of the two SRS resource sets configured for the activated BWP, and the second PHR in the PHR MAC CE is determined according to the number of frequency resource blocks of the PUSCH transmission and the joint or uplink common TCI state associated with the SRS resource set having the higher ID of the two SRS resource sets.

12. The UE according to claim 4 or 7, wherein the PHR is transmitted in a PHR MAC CE, and at least one bit in the PHR MAC CE indicates which of the two joint or uplink common TCI states the PHR is associated with, or which of the two sounding reference signaling (SRS) resource sets configured for the activated BWP the PHR is associated with.

13. The UE according to claim 1, wherein the total number of PHRs, including the at least one PHR, is determined in accordance with radio resource control (RRC) signaling.

14. A Wireless Access Network (RAN) node, Transceiver and, The transceiver is coupled to a processor, and the processor is The transceiver transmits information indicating two joint or uplink common transmit setting instruction (TCI) states applicable to the activated bandwidth portion (BWP) slot of the serving cell, Receiving, via the transceiver, at least one power headroom report (PHR) in the slot for the activated BWP of the serving cell, wherein the at least one PHR is determined in accordance with at least one physical uplink shared channel (PUSCH) transmission transmitted in the slot in the two joint or uplink common TCI state, A wireless access network (RAN) node configured to perform the following actions.

15. A portion of the layer of the PUSCH transmission is transmitted in a first joint or uplink common TCI state among the two joint or uplink common TCI states, another portion of the layer of the PUSCH transmission is transmitted in a second joint or uplink common TCI state among the two joint or uplink common TCI states, or each layer of the PUSCH transmission is transmitted in the two joint or uplink common TCI states, and two PHRs are transmitted in the slot in the PHR MAC CE, A radio access network (RAN) node according to claim 14, wherein a first PHR in the PHR MAC CE is determined according to the first joint or uplink common TCI state and the number of resource blocks for the PUSCH transmission, and a second PHR in the PHR MAC CE is determined according to the second joint or uplink common TCI state and the number of resource blocks for the PUSCH transmission.

16. The radio access network (RAN) node according to claim 14, wherein the total number of PHRs, including at least one PHR, is determined in accordance with radio resource control (RRC) signaling.

17. The steps include receiving information indicating two joint or uplink common transmit configuration (TCI) states applicable to the activated bandwidth portion (BWP) slot of a serving cell, A step of transmitting at least one power headroom report (PHR) in the slot for the activated BWP of the serving cell, wherein the at least one PHR is determined in accordance with at least one physical uplink shared channel (PUSCH) transmission transmitted in the slot in the two joint or uplink common TCI state. A method that includes [a certain feature].

18. A portion of the layer of the PUSCH transmission is transmitted in a first joint or uplink common TCI state among the two joint or uplink common TCI states, another portion of the layer of the PUSCH transmission is transmitted in a second joint or uplink common TCI state among the two joint or uplink common TCI states, or each layer of the PUSCH transmission is transmitted in the two joint or uplink common TCI states, and two PHRs are transmitted in the slot in the PHR MAC CE, The method according to claim 17, wherein a first PHR in the PHR MAC CE is determined according to the first joint or uplink common TCI state and the number of resource blocks for the PUSCH transmission, and a second PHR in the PHR MAC CE is determined according to the second joint or uplink common TCI state and the number of resource blocks for the PUSCH transmission.

19. The method according to claim 17, wherein the total number of PHRs, including the at least one PHR, is determined in accordance with radio resource control (RRC) signaling.

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