Wireless power control techniques

Abstract

Techniques for communicating according to beam states are described. An example wireless communication method includes receiving, by a communication device, one or more beam states, where at least one of the one or more beam states is associated with a channel or a reference signal, and transmitting, by the communication device, a channel or a reference signal according to the at least one beam state.

Description

[0001] Cross-references to related applications

[0002] This application is primarily for digital wireless communication. Background Technology

[0003] Mobile telecommunications technologies are propelling the world toward an increasingly interconnected and networked society. Compared to existing wireless networks, next-generation systems and wireless communication technologies will need to support a wider range of use case characteristics and provide more complex and sophisticated access requirements and flexibility.

[0004] LTE (Long Term Evolution) is a wireless communication standard for mobile devices and data terminals developed by the 3rd Generation Partnership Project (3GPP). LTE-Advanced (LTE-A) is a wireless communication standard that enhances the LTE standard. The fifth-generation wireless system, known as 5G, advances the LTE and LTE-A wireless standards and aims to support higher data rates, massive connectivity, ultra-low latency, high reliability, and other emerging service requirements. Summary of the Invention

[0005] This paper discloses techniques for handling uplink (UL) power control and beam status indication in example scenarios for asymmetric downlink (DL) single transmit and receive point (sTRP) and UL multiple transmit and receive point (mTRP). Specifically, it describes techniques for an example architecture for beam status indication that enables a single DL beam status indication but enables one or more UL beam status indications. For time division duplex (TDD) channel state information (CSI) acquisition, regardless of the presence of a physical uplink shared channel (PUSCH) configuration, a separate closed loop is proposed for detecting the reference signal (SRS) of the DL TRP and the corresponding independent power headroom report (PHR) for the SRS. Finally, it proposes a final path loss (PL) measurement and PL / PL offset configuration based on SRS reception and corresponding transmit power to address measurement misalignment issues based on another reference signal (RS) not from the UL-TRP or based on the absence of a PL RS configuration.

[0006] A first example wireless communication method includes: receiving one or more beam states by a communication device, wherein at least one of the one or more beam states is associated with a channel or a reference signal; and transmitting the channel or the reference signal by the communication device based on the at least one beam state.

[0007] In some embodiments, the one or more beam states include any one or more of the following: downlink beam state and uplink beam state, joint beam state and one or more uplink beam states, downlink beam state and one or more uplink beam states, one or more downlink beam states and one or more uplink beam states, or one or more joint beam states. In some embodiments, the method includes at least one of the following: the communication device receives radio resource control (RRC) parameters associated with a mode; the joint beam state is applied to the downlink and uplink; the downlink beam state is applied to the downlink; or the uplink beam state is applied to the uplink. In some embodiments, the one or more beam states include two or more downlink beam states or two or more joint beam states, and the method further includes any one or more of the following: the two or more downlink beam states or the two or more joint beam states belong to the same beam state or the same quasi-co-location (QCL) attribute; a first downlink beam state among the two or more downlink beam states or a first joint beam state among the two or more joint beam states is applied to the downlink; or one or more second downlink beam states among the two or more downlink beam states or one or more second joint beam states among the two or more joint beam states are ignored or not applied to the downlink.

[0008] In some embodiments, at least one of the one or more beam states includes a joint beam state or an uplink beam state, and the reference signal includes a sounding reference signal (SRS). In some embodiments, the SRS is used for antenna switching, for channel state information (CSI) acquisition, or associated with a separate closed loop. In some embodiments, at least one of the one or more beam states includes a joint beam state or an uplink beam state, and the reference signal includes a sounding reference signal (SRS) that is not used for antenna switching, not used for channel state information (CSI) acquisition, or not associated with a separate closed loop. In some embodiments, the method further includes any one or more of the following: the channel includes a Physical Downlink Shared Channel (PDSCH) applying a first downlink beam state or a first joint beam state; the channel includes a Control Resource Set (CORESET) applying a first downlink beam state or a first joint beam state; the reference signal includes a Channel State Information Reference Signal (CSI-RS) applying a first downlink beam state or a first joint beam state; the channel includes a Physical Uplink Shared Channel (PUSCH) applying a first uplink beam state and / or a second uplink beam state, or a first joint beam state and / or a second joint beam state; the channel includes a Physical Uplink Control Channel (PUCCH) applying a first uplink beam state and / or a second uplink beam state, or a first joint beam state and / or a second joint beam state; or the reference signal includes a Sounding Reference Signal (SRS) applying a first uplink beam state and / or a second uplink beam state, or a first joint beam state and / or a second joint beam state.

[0009] In some embodiments, a first downlink beam state or a first joint beam state is associated with a first flag or a first index in one or more beam states; a first uplink beam state or a first joint beam state is associated with a first flag or a first index in one or more beam states; or a second uplink beam state or a second joint beam state is associated with a second flag or a second index in one or more beam states. In some embodiments, the first joint beam state is not permitted to be applied to the Physical Uplink Shared Channel (PUSCH); the first joint beam state is not permitted to be applied to the Physical Uplink Control Channel (PUCCH); or the second joint beam state is not permitted to be applied to the Sounding Reference Signal (SRS) used for antenna switching or DL ​​CSI acquisition. In some embodiments, the reference signal includes a Sounding Reference Signal (SRS) associated with a separate closed loop in a component carrier, and the method further includes: receiving control information by a communication device, the control information including a Transmission Power Command (TPC) for the SRS, and determining the transmission power of the SRS in the component carrier according to the TPC.

[0010] In some embodiments, the method further includes any one or more of the following: indicating that a mode indicating a single downlink beam state and one or more uplink beam states is enabled; configuring an index for a separate closed loop for each SRS resource set; or associating the SRS with a separate closed loop separated from the closed loop of the Physical Uplink Shared Channel (PUSCH). In some embodiments, the Physical Uplink Shared Channel (PUSCH) is configured in component carriers. In some embodiments, the SRS is associated with a different beam state or a beam state different from the PUSCH. The Physical Uplink Shared Channel (PUSCH) is configured in component carriers. In some embodiments, the SRS is associated with a different beam state or a beam state different from the PUSCH.

[0011] In some embodiments, a field in the control information indicates a loop closure index for the TPC. In some embodiments, the method further includes any one or more of the following: the field includes 0 bits in response to configuring only a single loop closure for the SRS; the control information indicates a list of loop closure indices for the corresponding loop closure; the control information indicates a list of blocks, each block including a loop closure index and a TPC; or one or more TPC fields exist in the control information, and the loop closure index is applied to the one or more TPC fields. In some embodiments, the loop associated with the TPC is determined based on at least one of the following: a control resource set (CORESET) or search space set associated with the control information, a time unit of the control information, or a cell, component carrier, or portion bandwidth (BWP) associated with the control information. In some embodiments, the loop associated with the TPC is determined based on whether the control information is in a first time unit or a second time unit; or based on whether the control information is in an odd time unit or an even time unit.

[0012] In some embodiments, the method further includes: the communication device associating the at least one beam state with a Timing Advance Group (TAG) index and / or power control parameters, and determining the transmission of a channel or reference signal in the component carrier based on the TAG index or the power control parameters. In some embodiments, the power control parameters include a power offset or path loss value; or the at least one beam state is associated with a power offset or path loss value via Radio Resource Control (RRC) or Medium Access Control-Control Unit (MAC-CE). In some embodiments, the power offset includes a power offset value or a power offset index. In some embodiments, the power control parameters include a power offset, and the transmission power used to perform the transmission is a path loss estimate and power offset based on a path loss reference signal (PL-RS) associated with the at least one beam state.

[0013] In some embodiments, the power control parameter includes a path loss value, and further includes any one or more of the following: the at least one beam state is not associated with a path loss reference signal (PL-RS); or the PL-RS associated with the at least one beam state is absent, ignored, or excluded. In some embodiments, the method further includes: transmitting signaling by a communication device carrying information related to the transmission power of a sounding reference signal (SRS), the signaling including radio resource control (RRC) or media access control-control unit (MAC-CE).

[0014] The second example wireless communication method includes: a communication device sending a power headroom report (PHR) for sounding reference signal (SRS) in response to any one or more of the following: configuring an uplink shared channel on the carrier frequency of the serving cell, enabling a mode, configuring an SRS with a separate closed loop, and / or a field in a media access control-control unit (MAC-CE) received by the communication device being associated with the PHR and set to a specific value.

[0015] In some embodiments, the method further includes any one or more of the following: an indication mode for a single downlink beam state and one or more uplink beam states being indicated is enabled; an indication mode for reporting PHRs for SRS is enabled; the mode is configured per serving cell or per portion bandwidth (BWP); SRS is associated with antenna switching or downlink (DL) channel state information (CSI) acquisition; or SRS is configured with a flag. In some embodiments, the flag is configured per SRS resource or per SRS resource set. In some embodiments, the PHR for SRS is determined based on the time unit of SRS transmission or the time unit of downlink control information (DCI) and / or PHR that triggers SRS. In some embodiments, for periodic SRS or semi-persistent SRS, the PHR for SRS is determined based on the time unit of SRS transmission. In some embodiments, for aperiodic SRS, the PHR for SRS is determined based on the time unit of downlink control information (DCI) that triggers SRS.

[0016] In some embodiments, the PHR of the SRS is based on transmission in response to the association or overlap of the time unit of the SRS with the time unit of the PHR. In some embodiments, the PHR is determined based on the timing of the first SRS transmission in the time unit. In some embodiments, the method further includes any one or more of the following: the time unit of the SRS includes a time slot of the SRS or a time-domain window corresponding to the SRS; or, the time unit of the PHR includes a time slot of the PHR or a time-domain window corresponding to the PHR. In some embodiments, the time-domain window includes a duration from X time units before the SRS or PHR to Y time units after the SRS or PHR, where X and Y are integers.

[0017] In some embodiments, X is the same value as Y, or X or Y depends on the capability signaling. In some embodiments, the time unit in response to the PHR is associated with or overlaps with multiple time units corresponding to one or more SRSs, and the PHR is sequentially arranged from multiple time units based on the SRS transmission timing in the first time unit. In some embodiments, any one or more of the configured maximum transmission power, maximum power reduction (MPR), or maximum permissible radiation (MPE) are provided in the media access control-control unit (MAC-CE) signaling or radio resource control (RRC) signaling carrying the PHR for SRS.

[0018] A third example wireless communication method includes: a network device transmitting one or more beam states, wherein at least one of the one or more beam states is associated with a channel or a reference signal; and the network device transmitting the channel or the reference signal based on the at least one beam state.

[0019] In some embodiments, the reference signal includes a sounding reference signal (SRS) associated with a separate closed loop in the component carrier. The method further includes: transmitting control information by the network device, the control information including a transmit power command (TPC) for the SRS, the transmit power of the SRS in the component carrier being determined according to the TPC. In some embodiments, the at least one beam state is associated with a timing advance group (TAG) index and / or power control parameters, the transmission of the channel or reference signal in the component carrier being determined according to the TAG index or power control parameters.

[0020] The fourth example wireless communication method includes: a network device receiving a Power Headroom Report (PHR) for Sounding Reference Signal (SRS) in response to any one or more of the following: an uplink shared channel is configured on the carrier frequency of the serving cell, a mode is enabled, an SRS with a separate closed loop is configured, and / or a field in a Media Access Control-Control Unit (MAC-CE) sent by the network device is associated with the PHR and set to a specific value.

[0021] In some embodiments, the method further includes any one or more of the following: a mode indicating that a single downlink beam state and one or more uplink beam states are indicated is enabled; a mode indicating that a PHR reporting for SRS is enabled is enabled; the mode is configured per serving cell or per portion bandwidth (BWP); SRS is associated with antenna switching or downlink (DL) channel state information (CSI) acquisition; or SRS is configured with a flag.

[0022] In some embodiments, one or more beam states are associated with a quasi-co-location (QCL) of a downlink channel or downlink reference signal, a spatial filter of an uplink channel or uplink reference signal, or power control information of an uplink channel or uplink reference signal. In some embodiments, the control information format includes a downlink control information (DCI) format.

[0023] In another exemplary aspect, the methods described above are embodied in processor-executable code and stored in a non-transitory computer-readable storage medium. When executed by a processor, the code included in the computer-readable storage medium causes the processor to implement the methods described in this patent application.

[0024] In another exemplary embodiment, a device configured or operable to perform the methods described above is disclosed.

[0025] The above and other aspects and their embodiments are described in more detail in the accompanying drawings, description and claims. Attached Figure Description

[0026] Figure 1 An example of beam-based UL / DL transmission is shown, where solid lines represent the selected transmit (Tx) / receive (Rx) beams used for transmission.

[0027] Figure 2 Examples of asymmetric DL-sTRP (DL-sTRP) and UL-multiple TRP (UL-mTRP) are shown.

[0028] Figure 3 An example diagram of DL / UL site decoupling in an example heterogeneous network (HetNet) is shown.

[0029] Figures 4A-4D Example cases of beam status indication in DL-sTRP and UL-mTRP are shown.

[0030] Figure 5 An exemplary block diagram of a hardware platform that may be part of a network device or a communication device is shown.

[0031] Figure 6 Examples of wireless communication including a base station (BS) and a user equipment (UE) based on some implementations of the disclosed technology are shown.

[0032] Figure 7 An exemplary flowchart for communication based on beam status is shown.

[0033] Figure 8 An exemplary flowchart is shown for sending a Power Headroom Report (PHR) for the Sound Reference Signal (SRS).

[0034] Figure 9 Another exemplary flowchart for communication based on beam status is shown.

[0035] Figure 10 An exemplary flowchart for receiving a PHR for SRS is shown. Detailed Implementation

[0036] 5G NR and LTE share a fundamental assumption of downlink-uplink (DL-UL) co-location for radio architecture, assuming that the downlink (DL) transmission point (TRP) should have the same location as the UL-TRP. In this architecture, DL and UL operations can be unified, involving beam management, radio resource management (RRM), and TRP selection and handover (HO). TRP / beam selection and subsequent HO are performed based on DL measurements / reporting, and the selected TRP / beam information (i.e., the corresponding DL RS) is then applied to both DL and UL. However, with the development of 5G NR, the DL-UL co-location assumption is becoming an obstacle to the further evolution or improvement of UL transmission, as explained further below.

[0037] • First, deploying new UL-TRPs in the current network (NW) with low cost due to savings in DL Tx circuitry, such as power amplitude (PA) , to balance coverage / throughput between DL and UL has become an emerging technology. This means that an improved DL-UL non-co-located (site decoupling) architecture may be required.

[0038] • Secondly, Heterogeneous Network (HetNet) is another scenario for asymmetric DL-sTRP and UL-mTRP. It mitigates inter-cell interference by identifying the best UL service TRP from existing macro / micro BSs (i.e., DL / UL site decoupling) rather than by reducing the DLTx power from macro BSs.

[0039] • Third, NW energy saving can be achieved by shutting down the DL link in the TRP section, and then, to achieve this goal, DL UL non-coupling (site decoupling) can be considered.

[0040] To implement asymmetric DL-sTRP (DL-sTRP) and UL-multiple TRP (UL-mTRP) architectures, assuming an in-band, non-quasi-co-located mTRP scenario, the following can be considered: enhanced UL beam state / power control (PC) parameter indication, separate power control (PC) procedures for SRSs to the DL-sTRP from other SRSs to the UL TRP, and / or path loss measurement of the UL channel / RS to the UL-mTRP (if the DL-RS from the UL-mTRP does not exist). For example:

[0041] To achieve UL-mTRP operation independent of DL-sTRP, the process of indicating UL beam states and PC parameters can be considered. For UL beam states, indications of two or more UL beam states corresponding to the corresponding UL channel / RS can be considered, but for DL ​​channel / RS reception, there may only be one DL beam state. Then, in addition to UL spatial filtering information, the beam state also needs to provide UL PC parameters, such as path loss (PL) value determination (if no DL-RS configuration), or P0 / α / closed-loop parameters.

[0042] Then, for the individual power control (PC) procedures of the SRS to the DL-sTRP from other SRSs to the UL TRP, a separate UL power control procedure can be provided, where the UL power control procedure involves a separate UL power control closed loop, Transmit Power Command (TPC), and Power Headroom Report (PHR) corresponding to the SRS. For the PHR, it may be necessary to report the SRS's PHR together with other PHR reports (e.g., PUSCH-PHR in the same component carrier (CC)).

[0043] Finally, regarding path loss measurements of UL channels / RS to the UL-mTRP, if the DL-RS from the UL-mTRP is not present, the NW should perform the corresponding measurement of UL-PL (e.g., based on the SRS to the UL-mTRP) and provide the corresponding PL value (e.g., the PL offset corresponding to other UL channels / RS). When measuring the absolute PL value, the TX power-related parameters of the UL channels / RS (e.g., energy per resource element (EPRE)) can be reported to the gNB.

[0044] The considerable propagation loss caused by extremely high frequencies, at the cost of wide or ultra-wide spectrum resources, presents a significant challenge. To address this, antenna arrays using massive MIMO (e.g., up to 1024 antenna elements per node) and beamforming training techniques have been employed to achieve beam alignment and obtain sufficiently high antenna gain. To benefit from antenna arrays while maintaining low implementation costs, analog phase shifters may be attractive for achieving millimeter-wave beamforming, implying a finite number of controllable phases and imposing constant-mode constraints on these antenna elements. Given a pre-specified beam pattern, the goal of variable-phase-shift-based beamforming (BF) training is typically to identify the optimal pattern for subsequent data transmission in the case of a single TRP and a single panel.

[0045] Figure 1 An example of beam-based UL / DL transmission is shown, where solid lines represent the selected Tx / Rx beams used for transmission.

[0046] In asymmetric DL-sTRP (DL-sTRP) and UL-mTRP scenarios (involving DL / UL site decoupling in HetNet), we have the following two UL transmission schemes:

[0047] • Option 1: Dynamic Uplink Point Selection (DuPS). For example, with the goal of maximizing UL throughput and UL-RSRP (as shown in UE-2), the optimal uplink point is selected from the macro BS and the UL-only TRP. Then, it is similar to... Figure 3 The example shown illustrates the decoupling of DL / UL sites in HetNet, where UL sites are selected independently from all candidate macro / micro BSs, rather than always aligned with the DL service BS.

[0048] • Option 2: Joint Multipoint Reception (JRxMP). In this case, the UL-TRP (e.g., a UL-only TRP) is treated as an additional distributed antenna for the BS, and then coherent joint reception is performed (as shown for UE-1).

[0049] Figure 2 Examples of asymmetric DL-sTRP (DL-sTRP) and UL-multiple TRP (UL-mTRP) are shown.

[0050] The example headings in the following sections are intended to facilitate understanding of the disclosed subject matter and do not limit the scope of the claimed subject matter in any way. Therefore, one or more features of one example section may be combined with one or more features of another example section. Furthermore, the term "5G" is used for clarity, but the technology disclosed in this application is not limited to 5G technology and can be used in wireless systems implementing other protocols.

[0051] I. Example #1: Beam Status Indication in DL-sTRP and UL-mTRP

[0052] To implement asymmetric DL-sTRP and UL-mTRP (note that DL-sTRP and UL-sTRP can be assumed to be specific to their respective cases), beam state indications of one or more DL beam states, one or more UL beam states, or one or more combined beam states can be provided for channel / RS transmission. Specifically, NW can indicate at least one of the following:

[0053] • DL beam status and UL beam status

[0054] Furthermore, in this case, the separate TCI indication signaling (DL TCI state + UL TCI state) used for sTRP operation can be reused, and then we can use the separate TCI indication / activation procedure of the SRS to DL-TRP.

[0055] • Combined beam state and UL beam state

[0056] Additionally, if a mode is enabled (e.g., for DL-sTRP and UL-mTRP), a joint beam state and a ULTCI state are provided. For example, if the Pi field in the MAC-CE used for TCI activation is set to 1, a joint TCI state (instead of the DL TCI state in Rel-17) + UL TCI state is provided for the code point.

[0057] Furthermore, if the mode is enabled, there are two beam states, and then the first of these two beam states is applied to both DL and UL, while the second of these two beam states is applied to UL.

[0058] ■ For DL ​​signals, only one indicated beam state (i.e., joint beam state) is applied (e.g., the QCL assumption used to determine the corresponding DL signal transmission / reception).

[0059] ■ For UL signals, there are two indicated beam states (i.e., joint beam state + UL beam state).

[0060] Furthermore, the joint beam state means that the joint beam state can be applied to both DL and UL.

[0061] For example, in this case, the separate TCI indication signaling used for sTRP operation is enhanced to indicate a combined TCI state and another UL TCI state. This means that for DL ​​transmissions, there is still one indicated DL TCI state applicable to the DL transmission, but two indicated UL TCI states applicable to one or more UL transmissions (involving two indicated UL TCI states applicable to a single UL transmission or applicable to two corresponding UL transmissions).

[0062] • DL beam state + two (or at most two) UL beam states (including the first UL beam state and the second UL beam state)

[0063] Furthermore, there are two indicated beam states for UL, but only one indicated beam state for D1.

[0064] • Two DL beam states + two (or at most two UL beam states

[0065] Furthermore, the two beam states can be the same. This means that from a signaling perspective, there are at most two DL beam states, but they can be the same one.

[0066] • Two (or at most two) joint beam states

[0067] Furthermore, only one of the two joint beam states is applied to the DL, and then the other joint beam state is not applied to the DL.

[0068] • Combined beam state + two (or at most two) UL beam states (including the first UL beam state and the second UL beam state).

[0069] In addition, joint beam states are applied to specific SRS.

[0070] ■ In addition, this specific SRS is sent to the DL TRP, for example, for DL ​​CSI acquisition or antenna switching (e.g., in TDD).

[0071] Furthermore, the first and second beam states are applied to the UL (rather than to a specific SRS).

[0072] • DL beam state + three (or up to three) UL beam states (including the first UL beam state, the second UL beam state, and the third beam state)

[0073] In addition, the third beam state is applied to specific SRS.

[0074] ■ In addition, this specific SRS is sent to the DL TRP, for example, for DL ​​CSI acquisition or antenna switching (e.g., in TDD).

[0075] Furthermore, the first and second beam states apply to UL (except for specific SRS).

[0076] • In addition, the DL beam state can come from one or more UL beam states.

[0077] Furthermore, the following may be an explanation for each type of channel / RS. In the techniques described below, the terms "first" and "second" indicate a specific order.

[0078] • In addition, PDSCH can apply either the first DL beam state or the first joint beam state.

[0079] • In addition, CORESET can apply a first DL beam state or a first joint beam state.

[0080] • In addition, CSI-RS can apply either the first DL beam state or the first joint beam state.

[0081] • In addition, PUSCH can apply a first and / or second UL beam state, or a first and / or second combined beam state.

[0082] In addition, PUSCH can apply a second joint beam state.

[0083] Furthermore, the first joint beam state cannot be applied to PUSCH.

[0084] • In addition, PUCCH can apply a first and / or second UL beam state, or a first and / or second combined beam state.

[0085] In addition, PUSCH can apply a second joint beam state.

[0086] Furthermore, the first joint beam state cannot be applied to PUSCH.

[0087] • In addition, the SRS (e.g., for codebook or non-codebook SRS, or SRS other than for beam management or for antenna switching) may be applied with a first and / or a second UL beam state, or a first and / or a second combined beam state.

[0088] • In addition, the SRS used for antenna switching can (or should) apply a first UL beam state or a first joint beam state.

[0089] In addition, the SRS used for antenna switching can apply the first joint beam state.

[0090] Furthermore, the second joint beam state cannot be applied to the SRS of antenna switching.

[0091] For example, for asymmetric DL-sTRP and UL-mTRP, we have the following... Figures 4A-4D The example shown.

[0092] •against Figure 4A The scenario shown indicates a joint beam state and a UL beam state, and then the joint beam state is applied to the SRS for antenna switching acquired by DL CSI in TDD.

[0093] •against Figure 4B The diagram illustrates a DL beam state, a first UL beam state, and a second beam state. The first UL beam state is then applied to the SRS for antenna switching, and the second UL beam state is applied to the UL channels / RS other than the SRS for antenna switching.

[0094] •against Figure 4CThe illustration indicates a DL beam state, a first UL beam state, and a second beam state. However, the first and second UL beam states are applied to the UL channel (e.g., for TDD repetition or simultaneous UL transmission in UL-mTRP operation). Then, if there is an SRS for antenna switching, a separate TCI indication / activation procedure for the SRS can be used for DL-TRP (i.e., normal TRP).

[0095] •against Figure 4D The diagram illustrates a DL beam state and a first / second / third UL beam state. The first and second UL beam states are then applied to MTRP-based UL transmissions (e.g., SDM / SFN, repeated by TDM). The third UL beam state is used for SRS transmissions to the DL-TRP (i.e., normal TRP).

[0096] Please note that case d can be assumed to be the normal / general case for DL-sTRP and UL-mTRP operations.

[0097] II. Example #2: A separate closed-loop process for SRS to DL-TRP

[0098] In this embodiment, a separate power control process for the SRS to the DL-TRP is described, wherein a PUCCH and / or PUSCH are present in the UL. We can then have one or more separate closed loops for the SRS, one of which is used for beam management of the SRS (e.g., configuration authorization), and then another closed loop is used for the SRS to the DL-TRP.

[0099] • Furthermore, if a mode is enabled (e.g., for asymmetric DL-sTRP and UL-mTRP), DCI format 2_3 can be used to indicate the TPC of SRS in CC.

[0100] In addition, SRS has a separate closed loop.

[0101] In addition, PUSCH can be configured in CC.

[0102] • In addition, a field in DCI (i.e., DCI format 2_3) is used to indicate the closed-loop index of the TPC command, i.e., closed-loop index + TPC.

[0103] Furthermore, if only a single closed loop is configured for the SRS, this field can be 0 bits.

[0104] In addition, if there are one or more TPC fields in only one block of the DCI, then a closed-loop index is provided for each TPC field.

[0105] Furthermore, if there are one or more blocks in the DCI, one of the blocks in the DCI includes the closed loop index field and the TPC field.

[0106] • In addition, the closed-loop index of the TPC command is determined based on the following:

[0107] o CORESET or search space set associated with DCI

[0108] ■ For example, the closed loop index of a TPC command can be determined based on the CORESET index associated with the DCI. For example, the closed loop index of the TPC is mod(CORESET index, 2).

[0109] ■ A closed-loop index can be configured with a CORESET or search space set / associated with a CORESET or search space set. This means that TPC commands are applied to closed loops associated with a CORESET or search space set.

[0110] • If the closed-loop index is not configured with CORESET or a search space set, the TPC command is associated with the first closed loop of the SRS, such as closed loop = 0 or i1.

[0111] o DCI time unit

[0112] ■ For example, the closed-loop index of the TPC command can be determined based on the time unit of the DCI.

[0113] • In addition, the time unit of DCI refers to the first or second half-slot in a subframe.

[0114] For example, the first half of the time slot in a subframe is used for the first TPC command, and then the second half of the time slot in the subframe is used for the second TPC command.

[0115] • In addition, the time unit of DCI refers to the odd or even time slots in the subframe.

[0116] For example, odd-numbered time slots in a subframe are used for the first TPC command, and then even-numbered time slots in the subframe are used for the second TPC command.

[0117] o CC / BWP associated with DCI

[0118] ■ For example, a closed-loop index can be configured to be associated with a CC or BWP. This means that TPC commands are applied to the closed loop associated with the CC or BWP carrying the DCI.

[0119] • If no closed-loop index is provided, the TPC command is associated with the first closed loop of the SRS, such as closed loop = 0 or i1.

[0120] Then, a separate closed-loop index can be configured for each SRS resource set, and when the SRS resource set is sent, the UE can obtain the closed-loop value associated with the individual closed loop of the SRS.

[0121] Note that DCI format 2_3 is used by one or more UEs to transmit a set of TPC commands for SRS transmission. SRS requests can also be sent along with the TPC commands. The following information is transmitted via DCI format 2_3, where CRC is scrambled by TPC-SRS-RNTI:

[0122] •Block No. 1, Block No. 2, ..., Block No. N.

[0123] The starting position of the block is determined by the higher-level parameters of the UE configured with the block (e.g., startingBitOfFormat2-3 or startingBitOfFormat2-3SUL-v1530).

[0124] • For example, for a block configured for the UE (i.e., N=1), and if the fields in the DCI (i.e., DCI format 2_3) are to indicate the closed-loop index of the TPC command (i.e., srs-TPC-PDCCH-group = type-A), the block includes at least one of the following fields:

[0125] o SRS request fields, closed-loop index field #1, TPC field #1, closed-loop index field #2, TPC field #2, ..., closed-loop index field #N, TPC field #N.

[0126] • For example, for multiple blocks configured for the UE (i.e., N can be greater than or equal to 1), the blocks in the DCI (i.e., DCI format 2_3) will be used to indicate the closed-loop index of the TPC command (i.e., srs-TPC-PDCCH-group = type-A) and the TPC field of that block. The block includes at least one of the following fields:

[0127] o SRS request field, closed-loop index field, TPC field.

[0128] III. Example #3: Independent PHR for SRS to DL-TRP and PHR for PUSCH

[0129] In this embodiment, we elaborate on the independent PHR for the SRS to DL-TRP and the PHR for PUSCH to support independent power control for the SRS to DL-TRP. Compared with other channels / RS to DL-TRP (i.e., PUSCH), the independent power control for the SRS to DL-TRP can use different PL-RS configurations or PL estimates / assumptions for the transmission to DL-TRP.

[0130] In this case, the UE can send a PHR (i.e., Type-3 PHR) for the serving cell for SRS when at least one of the following conditions is met:

[0131] • Condition-1: The UE is configured to perform PUSCH transmission on the carrier frequency of serving cell c.

[0132] • Condition-2: Enable a mode (e.g., for asymmetric DL-sTRP and UL-mTRP).

[0133] In addition, this mode can be configured by serving cell or by BWP.

[0134] •Condition 3: An SRS with a separate closed loop is configured.

[0135] In addition, SRS is used for antenna switching or DL ​​CSI acquisition.

[0136] In addition, the SRS is configured with a flag (e.g., to distinguish it from other SRSs, or to have a separate PHR for the SRS (e.g., regardless of whether the corresponding serving cell has a PUSCH configured)).

[0137] ■ For example, the flag can be configured per SRS resource or per SRS resource set.

[0138] • Condition-4: The field associated with the PHR in MAC-CE is set to a specific value. For example, if the field is set to 1, the PHR for SRS can be reported in MAC-CE; otherwise, the corresponding field for the PHR for SRS is retained or omitted.

[0139] In addition, the PHR used for SRS is determined based on the reference format determined by the actual transmission or according to the time unit of SRS transmission or the DCI that triggers SRS, and / or the time unit of PHR reporting (referring to the PUSCH carrying the PHR).

[0140] • In addition, for periodic / semi-persistent SRS, the PHR used for SRS is based on the actual transmission or a reference format determined according to the time unit of SRS transmission.

[0141] • In addition, for aperiodic SRS, the PHR used for SRS is based on the actual transmission or a reference format determined according to the time unit of the DCI that triggers SRS.

[0142] • In addition, if the time unit of SRS is associated with or overlaps with the same time unit reported by PHR, then the PHR of SRS is based on the actual transmission.

[0143] For example, if the SRS is associated with the same time slot reported by the PHR, then the PHR of the SRS is based on the actual transmission.

[0144] Furthermore, PHR is determined based on the timing of the first SRS transmission in the time unit.

[0145] In addition, the time unit of SRS includes the time slot of SRS or the time domain window corresponding to SRS.

[0146] ■ In addition, the time-domain window includes the duration from X time units before the SRS slot to Y time units after the SRS slot, where X and Y are integers (e.g., 0, 1, 2, 3, 4 or 14).

[0147] • For example, the time-domain window includes the duration from one slot / 14 symbols before the SRS slot to one slot / 14 symbols after the SRS slot.

[0148] • For example, the time-domain window includes the duration from the SRS time slot to 1 time slot / 14 symbols after the SRS time slot (i.e., X=0, Y=1 time slot / 14 symbols).

[0149] • In addition, X and Y can be the same value, or depend on the UE capability signaling.

[0150] In addition, the time unit for PHR reporting includes the time slot for PHR reporting, or the time domain window corresponding to PHR reporting.

[0151] ■ In addition, the time-domain window includes the duration from X time units before the time slot reported by the PHR to Y time units after the time slot reported by the PHR, where X and Y are integers (e.g., 0, 1, 2, 3, 4 or 14).

[0152] • For example, the time-domain window includes the duration from 1 slot / 14 symbols before the PHR slot to the PHR slot (i.e., X = 1 slot / 14 symbols, Y = 0).

[0153] • In addition, X and Y can be the same value, or depend on the UE capability signaling.

[0154] Furthermore, if the time unit reported by the PHR overlaps with multiple time units corresponding to the SRS, the PHR used for the SRS is based on the SRS transmission timing in the first time unit of the multiple time units.

[0155] ■ For example, in the case of CA, if the SCS configuration μ_1 on the active UL BWP b_1 of carrier f_1 of serving cell c_1 is less than the SCS configuration μ_2 on the active UL BWP b_2 of carrier f_2 of serving cell c_2, and if the UE provides PHR reporting in PUSCH transmissions in slots on the active UL BWP b_1 that overlap with multiple slots on the active UL BWP b_2, then the UE provides a PHR report for SRS (if any) on the first slot that completely overlaps with the slots on the active UL BWP b_1 among multiple slots on the active UL BWP b_2.

[0156] Furthermore, if the time unit reported by the PHR overlaps with multiple time units of the SRS, the PHR of the SRS is based on the first SRS transmission timing among the multiple time units.

[0157] In addition, in the MAC-CE or RRC signaling carrying the PHR for SRS, at least one of the configured maximum transmission power (Pc,max), maximum power reduction (P-MPR), and / or maximum permissible radiation (MPE) can be provided to indicate the maximum Tx power for SRS transmission.

[0158] Furthermore, in this case, the PHR used for SRS can be a true PHR.

[0159] IV. Example 4: PL and beam status indication for UL signals to UL-TRP

[0160] In this embodiment, the PL measurement for the UL channel / RS is sent to the UL-TRP, where the DLRS for PL estimation may not exist or be provided.

[0161] Furthermore, beam status can be associated with TAG indexes and / or power control parameters. The UE can receive beam status that can be associated with TAG indexes and / or power control parameters, and the UE can transmit uplink channels / RS based on TAG information and / or power control parameters (e.g., Tx power offset or path loss).

[0162] In addition, beam status can be correlated with power offset or path loss values ​​via RRC or MAC-CE.

[0163] ■ In addition, power offset includes power offset value or power offset index.

[0164] • In addition, the power offset value can be configured / updated by RRC or MAC-CE.

[0165] • In addition, the power offset index is associated with the power offset value, and then with the beam state.

[0166] Furthermore, the transmission power for the UL signal is determined based on the path loss estimate and power offset of the PL-RS associated with the beam state.

[0167] ■ In addition, the path loss estimate corresponding to the beam state is determined by adding the power offset value to the path loss estimate of the PL-RS associated with the beam state.

[0168] Furthermore, when beam state is associated with path loss value, the PL-RS associated with beam state may be absent, ignored, or excluded.

[0169] Then, the PL value can be measured by the SRS, then configured separately by the gNB, and then the Tx power of the SRS can be signaled by the UE to the gNB via MAC-CE or RRC.

[0170] In this patent application, the term "beam state" may be equivalent to Quasi-Co-located (QCL) state, Transmission Configuration Indication (TCI) state, Spatial Relationship (also referred to as Spatial Relationship Information), Reference Signal (RS), Spatial Filtering, or Precoding. Furthermore, in this patent application, "beam state" is also referred to as "beam" or "TCI state".

[0171] Furthermore, in this patent application, "beam state" may be equivalent to "indicated beam state" or "indicated TCI state".

[0172] Furthermore, in this patent application, "DL beam state" includes "joint / DL TCI state," "joint TCI state," "DL TCI state," or "TCI state." Additionally, in this patent application, "DL beam state" is applied to DL signals.

[0173] Furthermore, "DL beam status" can be equated with "beam status". Additionally, "DL TCI status" can be equated with "TCI status".

[0174] Furthermore, in this patent application, "UL beam state" includes "joint / UL TCI state," "joint TCI state," or "UL TCI state." Additionally, in this patent application, "UL beam state" is applied to UL signals.

[0175] In addition, "UL beam status" can be equated with "UL TCI status".

[0176] Furthermore, in this patent application, the "joint beam state" can be applied to both DL and UL signals.

[0177] The term "Tx beam" can be equivalent to QCL state, TCI state, spatial relationship state, DL reference signal, UL reference signal, Tx spatial filtering, or Tx precoding.

[0178] The term "Rx beam" can be equated with QCL state, TCI state, spatial relation state, spatial filtering, Rx spatial filtering, or Rx precoding.

[0179] The term "beam ID" can be equivalent to QCL state index, TCI state index, spatial relation state index, reference signal index, spatial filter index, or precoding index.

[0180] Specifically, spatial filtering can be either UE-side filtering or gNB-side filtering, and spatial filtering is also known as spatial domain filtering.

[0181] In this patent application, "spatial relationship information" may consist of one or more reference RSs, used to represent the same or quasi-spatial relationship between the target "RS or channel" and one or more reference RSs.

[0182] In this patent application, "spatial relationship" may refer to beam, spatial parameters, or spatial filtering.

[0183] In this patent application, a “beam state” may consist of one or more reference RSs and / or their corresponding QCL type parameters, wherein the QCL type parameters include at least one of the following aspects or combinations: [1] Doppler spread, [2] Doppler frequency shift, [3] delay spread, [4] average delay, [5] average gain, and [6] spatial parameters (also referred to as spatial Rx parameters). In this patent application, a “beam state” may be equivalent to a “QCL ​​state” or a “TCI state”. In this patent application, “QCL ​​type A”, “QCL ​​type B”, “QCL ​​type C”, and “QCL ​​type D” may be described as including the following:

[0184] • "QCL Type A": {Doppler frequency shift, Doppler spread, average delay, delay spread}

[0185] • "QCL Type B": {Doppler Shift, Doppler Spread}

[0186] • "QCL Type C": {Doppler frequency shift, average delay}

[0187] • "QCL type D": {space Rx parameter}

[0188] In this patent application, RS includes a Channel State Information Reference Signal (CSI-RS), a Synchronization Signal Block (SSB) (also known as SS / PBCH), a Demodulation Reference Signal (DMRS), a Probe Reference Signal (SRS), and a Physical Random Access Channel (PRACH). Furthermore, RS includes at least a DL Reference Signal and a UL Reference Signaling.

[0189] DL RS includes at least CSI-RS, SSB, and DMRS (e.g., DL DMRS).

[0190] UL RS includes at least SRS, DMRS (e.g., UL DMRS) and PRACH.

[0191] In this patent application, the "UL signal" may be PUCCH, PUSCH, or SRS.

[0192] In this patent application, the "DL signal" may be PDCCH, PDSCH, or CSI-RS.

[0193] In this patent application, a "time unit" can be a sub-symbol, symbol, time slot, subframe, frame, or transmission opportunity.

[0194] In this patent application, the CSI-RS used for CSI can be equivalent to the CSI-RS without high-level parameter repetition and trs-Info configured.

[0195] In this patent application, the CSI-RS used for tracking can be equivalent to a CSI-RS configured with the high-level parameter trs-Info.

[0196] In this patent application, the CSI-RS for beam management can be equivalent to a CSI-RS configured with repeated high-level parameters.

[0197] In this patent application, the power control parameters include at least one of path loss RS, open-loop parameters, and closed-loop index. In this patent application, "power control parameters" may be equivalent to "UL power control parameters." In this patent application, "not associated with a single closed loop" may be equivalent to "associated with a closed loop as a PUSCH."

[0198] In this patent application, "closed-loop index" can be equated with "power control regulation state".

[0199] In this patent application, the "open-loop parameter" includes at least one of the target power (i.e., P0) and the factor (i.e., α).

[0200] In this patent application, "mode" includes "enabling PHR for SRS" (e.g., without considering the corresponding carrier component / cell PUSCH configuration), "indicating a single downlink beam state and one or more uplink beam states", or "downlink signal to a communication device and one or more uplink signals to one or more network devices", or "a single downlink TRP and multiple uplink TRPs".

[0201] In this patent application, "control information" may include a "control information format". In this patent application, "control information format" may include a "downlink control information (DCI) format". In this patent application, "carrier component" may include a "cell".

[0202] Figure 7 An exemplary flowchart illustrating communication based on beam states is shown. Operation 702 includes: receiving one or more beam states by a communication device, wherein at least one of the one or more beam states is associated with a channel or a reference signal. Operation 704 includes: transmitting the channel or the reference signal by the communication device based on the at least one beam state.

[0203] In some embodiments, the one or more beam states include any one or more of the following: downlink beam state and uplink beam state, joint beam state and one or more uplink beam states, downlink beam state and one or more uplink beam states, one or more downlink beam states and one or more uplink beam states, or one or more joint beam states. In some embodiments, the method includes at least one of the following: the communication device receives radio resource control (RRC) parameters associated with a mode; the joint beam state is applied to the downlink and uplink; the downlink beam state is applied to the downlink; or the uplink beam state is applied to the uplink. In some embodiments, the one or more beam states include two or more downlink beam states or two or more joint beam states, and the method further includes any one or more of the following: the two or more downlink beam states or two or more joint beam states belong to the same beam state or the same quasi-co-location (QCL) attribute; a first downlink beam state among the two or more downlink beam states or a first joint beam state among the two or more joint beam states is applied to the downlink; or one or more second downlink beam states among the two or more downlink beam states or one or more second joint beam states among the two or more joint beam states are ignored or not applied to the downlink.

[0204] In some embodiments, at least one of the one or more beam states includes a joint beam state or an uplink beam state, and the reference signal includes a sounding reference signal (SRS). In some embodiments, the SRS is used for antenna switching, for channel state information (CSI) acquisition, or associated with a separate closed loop. In some embodiments, at least one of the one or more beam states includes a joint beam state or an uplink beam state, and the reference signal includes a sounding reference signal (SRS) that is not used for antenna switching, not used for channel state information (CSI) acquisition, or not associated with a separate closed loop. In some embodiments, the method further includes any one or more of the following: the channel includes a Physical Downlink Shared Channel (PDSCH) applying a first downlink beam state or a first joint beam state; the channel includes a Control Resource Set (CORESET) applying a first downlink beam state or a first joint beam state; the reference signal includes a Channel State Information Reference Signal (CSI-RS) applying a first downlink beam state or a first joint beam state; the channel includes a Physical Uplink Shared Channel (PUSCH) applying a first uplink beam state and / or a second uplink beam state, or a first joint beam state and / or a second joint beam state; the channel includes a Physical Uplink Control Channel (PUCCH) applying a first uplink beam state and / or a second uplink beam state, or a first joint beam state and / or a second joint beam state; or the reference signal includes a Sounding Reference Signal (SRS) applying a first uplink beam state and / or a second uplink beam state, or a first joint beam state and / or a second joint beam state.

[0205] In some embodiments, a first downlink beam state or a first joint beam state is associated with a first flag or a first index in one or more beam states; a first uplink beam state or a first joint beam state is associated with a first flag or a first index in one or more beam states; or a second uplink beam state or a second joint beam state is associated with a second flag or a second index in one or more beam states. In some embodiments, the first joint beam state is not permitted to be applied to the Physical Uplink Shared Channel (PUSCH); the first joint beam state is not permitted to be applied to the Physical Uplink Control Channel (PUCCH); or the second joint beam state is not permitted to be applied to the Sounding Reference Signal (SRS) used for antenna switching or DL ​​CSI acquisition. In some embodiments, the reference signal includes a Sounding Reference Signal (SRS) associated with a separate closed loop in a component carrier, and the method further includes: receiving control information by a communication device, the control information including a Transmission Power Command (TPC) for the SRS, and determining the transmission power of the SRS in the component carrier according to the TPC.

[0206] In some embodiments, the method further includes any one or more of the following: indicating that a mode indicating a single downlink beam state and one or more uplink beam states is enabled; configuring an index for a separate closed loop for each SRS resource set; or associating the SRS with a separate closed loop separated from the closed loop of the Physical Uplink Shared Channel (PUSCH). In some embodiments, the Physical Uplink Shared Channel (PUSCH) is configured in component carriers. In some embodiments, the SRS is associated with a different beam state or a beam state different from the PUSCH. The Physical Uplink Shared Channel (PUSCH) is configured in component carriers. In some embodiments, the SRS is associated with a different beam state or a beam state different from the PUSCH.

[0207] In some embodiments, a field in the control information indicates a loop closure index for the TPC. In some embodiments, the method further includes any one or more of the following: the field includes 0 bits in response to configuring only a single loop closure for the SRS; the control information indicates a list of loop closure indices for the corresponding loop closure; the control information indicates a list of blocks, each block including a loop closure index and a TPC; or one or more TPC fields exist in the control information, and the loop closure index is applied to the one or more TPC fields. In some embodiments, the loop associated with the TPC is determined based on at least one of the following: a control resource set (CORESET) or search space set associated with the control information, a time unit of the control information, or a cell, component carrier, or portion bandwidth (BWP) associated with the control information. In some embodiments, the loop associated with the TPC is determined based on whether the control information is in a first time unit or a second time unit; or based on whether the control information is in an odd time unit or an even time unit.

[0208] In some embodiments, the method further includes: the communication device associating the at least one beam state with a Timing Advance Group (TAG) index and / or power control parameters, and determining the transmission of a channel or reference signal in the component carrier based on the TAG index or the power control parameters. In some embodiments, the power control parameters include a power offset or path loss value; or the at least one beam state is associated with a power offset or path loss value via Radio Resource Control (RRC) or Medium Access Control-Control Unit (MAC-CE). In some embodiments, the power offset includes a power offset value or a power offset index. In some embodiments, the power control parameters include a power offset, and the transmission power used to perform the transmission is a path loss estimate and power offset based on a path loss reference signal (PL-RS) associated with the at least one beam state.

[0209] In some embodiments, the power control parameter includes a path loss value, and further includes any one or more of the following: the at least one beam state is not associated with a path loss reference signal (PL-RS); or the PL-RS associated with the at least one beam state is absent, ignored, or excluded. In some embodiments, the method further includes: transmitting signaling by a communication device carrying information related to the transmission power of a sounding reference signal (SRS), the signaling including radio resource control (RRC) or media access control-control unit (MAC-CE).

[0210] Figure 8 An exemplary flowchart for sending a Power Headroom Report (PHR) for Sounding Reference Signal (SRS) is shown. Operation 802 includes: the communication device sending a Power Headroom Report (PHR) for Sounding Reference Signal (SRS) in response to any one or more of the following: an uplink shared channel is configured on the carrier frequency of the serving cell, a mode is enabled, an SRS with a separate closed loop is configured, and / or a field in the Media Access Control-Control Unit (MAC-CE) received by the communication device is associated with the PHR and set to a specific value.

[0211] In some embodiments, the method further includes any one or more of the following: an indication mode for a single downlink beam state and one or more uplink beam states being indicated is enabled; an indication mode for reporting PHRs for SRS is enabled; the mode is configured per serving cell or per portion bandwidth (BWP); SRS is associated with antenna switching or downlink (DL) channel state information (CSI) acquisition; or SRS is configured with a flag. In some embodiments, the flag is configured per SRS resource or per SRS resource set. In some embodiments, the PHR for SRS is determined based on the time unit of SRS transmission or the time unit of downlink control information (DCI) and / or PHR that triggers SRS. In some embodiments, for periodic SRS or semi-persistent SRS, the PHR for SRS is determined based on the time unit of SRS transmission. In some embodiments, for aperiodic SRS, the PHR for SRS is determined based on the time unit of downlink control information (DCI) that triggers SRS.

[0212] In some embodiments, the PHR of the SRS is based on transmission in response to the association or overlap of the time unit of the SRS with the time unit of the PHR. In some embodiments, the PHR is determined based on the timing of the first SRS transmission in the time unit. In some embodiments, the method further includes any one or more of the following: the time unit of the SRS includes a time slot of the SRS or a time-domain window corresponding to the SRS; or, the time unit of the PHR includes a time slot of the PHR or a time-domain window corresponding to the PHR. In some embodiments, the time-domain window includes a duration from X time units before the SRS or PHR to Y time units after the SRS or PHR, where X and Y are integers.

[0213] In some embodiments, X is the same value as Y, or X or Y depends on the capability signaling. In some embodiments, the time unit in response to the PHR is associated with or overlaps with multiple time units corresponding to one or more SRSs, and the PHR is sequentially arranged from multiple time units based on the SRS transmission timing in the first time unit. In some embodiments, any one or more of the configured maximum transmission power (Pc,max), maximum power reduction (MPR), or maximum permissible radiation (MPE) are provided in the media access control-control unit (MAC-CE) signaling or radio resource control (RRC) signaling carrying the PHR for SRS.

[0214] Figure 9 Another exemplary flowchart illustrating communication based on beam states is shown. Operation 902 includes: a network device transmitting one or more beam states, wherein at least one of the one or more beam states is associated with a channel or reference signal. Operation 904 includes: the network device transmitting the channel or reference signal based on the at least one beam state.

[0215] In some embodiments, the reference signal includes a sounding reference signal (SRS) associated with a separate closed loop in the component carrier. The method further includes: transmitting control information by the network device, the control information including a transmit power command (TPC) for the SRS, the transmit power of the SRS in the component carrier being determined according to the TPC. In some embodiments, the at least one beam state is associated with a timing advance group (TAG) index and / or power control parameters, the transmission of the channel or reference signal in the component carrier being determined according to the TAG index or power control parameters.

[0216] Figure 10An exemplary flowchart for receiving a Power Headroom Report (PHR) for SRS is shown. Operation 1010 includes: receiving a Power Headroom Report (PHR) for Sounding Reference Signal (SRS) by a network device in response to any one or more of the following: configuring an uplink shared channel on the carrier frequency of the serving cell, enabling a mode, configuring an SRS with a separate closed loop, and / or having a field in a Media Access Control-Control Unit (MAC-CE) sent by the network device associated with the PHR and set to a specific value.

[0217] In some embodiments, the method further includes any one or more of the following: a mode indicating that a single downlink beam state and one or more uplink beam states are indicated is enabled; a mode indicating that a PHR reporting for SRS is enabled is enabled; the mode is configured per serving cell or per portion bandwidth (BWP); SRS is associated with antenna switching or downlink (DL) channel state information (CSI) acquisition; or SRS is configured with a flag.

[0218] In some embodiments, one or more beam states are associated with a quasi-co-location (QCL) of a downlink channel or downlink reference signal, a spatial filter of an uplink channel or uplink reference signal, or power control information of an uplink channel or uplink reference signal. In some embodiments, the control information format includes a downlink control information (DCI) format.

[0219] Figure 5 An exemplary block diagram of a hardware platform 500 is shown, which may be part of a network device (e.g., a base station) or a communication device (e.g., a user equipment (UE)). The hardware platform 500 includes at least one processor 510 and a memory 505 storing instructions thereon. The instructions executed by the processor 510 configure the hardware platform 500 to perform... Figures 1 to 4C and Figures 6 to 10 The operations described in the various embodiments described in this patent application are as follows: Transmitter 515 transmits or sends information or data to another device. For example, a network device transmitter may send a message to a user equipment. Receiver 520 receives information or data transmitted or sent by another device. For example, a user equipment may receive a message from a network device.

[0220] The implementation methods discussed above are applicable to wireless communication. Figure 6An example of a wireless communication system (e.g., a 5G or NR cellular network) including a base station 620 and one or more user equipments (UEs) 611, 612, and 613 is shown. In some embodiments, the UE accesses the BS (e.g., the network) using a communication link to the network (sometimes referred to as the uplink direction, as depicted by dashed arrows 631, 632, and 633), which enables subsequent communication from the BS to the UE (e.g., as shown in the direction from the network to the UE, sometimes referred to as the downlink direction, as shown by arrows 641, 642, and 643). In some embodiments, the BS sends information to the UE (sometimes referred to as the downlink direction, as depicted by arrows 641, 642, and 643), which enables subsequent communication from the UE to the BS (e.g., as shown in the direction from the UE to the BS, sometimes referred to as the uplink direction, as shown by dashed arrows 631, 632, and 633). The UE can be, for example, a smartphone, tablet, mobile computer, machine-to-machine (M2M) device, Internet of Things (IoT) device, etc.

[0221] In this application, the term "exemplary" is used to mean "an example of..." and does not represent an ideal or preferred embodiment unless otherwise stated.

[0222] Some of the embodiments described herein are described in the general context of methods or processes that may be implemented in one embodiment as a computer program product embodied in a computer-readable medium, including computer-executable instructions such as program code that are executed by a computer in a networked environment. The computer-readable medium may include removable and non-removable storage devices, including but not limited to read-only memory (ROM), random access memory (RAM), optical disc (CD), digital versatile optical disc (DVD), etc. Therefore, the computer-readable medium may include non-transitory storage media. Typically, program modules may include routines, programs, objects, components, data structures, etc., that perform specific tasks or implement specific abstract data types. Computer or processor-executable instructions, associated data structures, and program modules represent examples of program code for performing steps of the methods disclosed herein. A particular sequence of such executable instructions or associated data structures represents examples of corresponding actions for implementing the functionality described in such steps or processes.

[0223] Some of the disclosed embodiments can be implemented as devices or modules using hardware circuitry, software, or a combination thereof. For example, hardware circuitry implementations may include discrete analog and / or digital components, such as those integrated as part of a printed circuit board. Alternatively or additionally, the disclosed components or modules may be implemented as application-specific integrated circuits (ASICs) and / or field-programmable gate arrays (FPGAs). Some implementations may additionally or alternatively include a digital signal processor (DSP), which is a special-purpose microprocessor with an architecture optimized for the operational requirements of digital signal processing related to the disclosed functions of this application. Similarly, various components or sub-components within each module can be implemented using software, hardware, or firmware. Interconnectivity between modules and / or components within modules can be provided using any connection methods and media known in the art, including but not limited to communication via the Internet, wired, or wireless networks using appropriate protocols.

[0224] While this application contains numerous details, these details should not be construed as limiting the scope of the claimed invention or any potentially claimed content, but rather as descriptions of specific features of particular embodiments. Certain features described in the application within the context of individual embodiments may also be implemented in combination in a single embodiment. Conversely, various features described within the context of a single embodiment may also be implemented individually or in any suitable sub-combination in multiple embodiments. Furthermore, although features may be described above as functioning in certain combinations, and even initially claimed in this way, one or more features from a claimed combination may be removed from that combination in some cases, and the claimed combination may be for sub-combinations or variations thereof. Similarly, although operations are depicted in a specific order in the drawings, this should not be construed as requiring these operations to be performed in the specific order shown or in a sequential order, or requiring the performance of all shown operations to achieve the desired result.

[0225] Only a few implementation methods and examples have been described, and other implementation methods, enhancements and variations may be made based on the content described and illustrated in this disclosure.

Claims

1. A wireless communication method, comprising: One or more beam states are received by a communication device, wherein at least one of the one or more beam states is associated with a channel or a reference signal; and The communication device transmits the channel or the reference signal according to the at least one beam state.

2. The method according to claim 1, wherein, The one or more beam states include any one or more of the following: Downlink beam status and uplink beam status, Combined beam status and one or more uplink beam statuses, Downlink beam status and one or more uplink beam statuses. One or more downlink beam states and one or more uplink beam states, or One or more joint beam states.

3. The method according to claim 2, comprising at least one of the following: in, The communication device receives radio resource control (RRC) parameters associated with the mode; The joint beam state is applied to both the downlink and uplink. Wherein, the downlink beam state is applied to the downlink; or The uplink beam state is applied to the uplink.

4. The method according to claim 1, wherein, The one or more beam states include two or more downlink beam states or two or more joint beam states, and The method further includes any one or more of the following: Wherein, the two or more downlink beam states or the two or more joint beam states belong to the same beam state or the same quasi-co-location (QCL) attribute; Wherein, the first downlink beam state among the two or more downlink beam states, or the first joint beam state among the two or more joint beam states, is applied to the downlink; or In this context, one or more second downlink beam states among the two or more downlink beam states, or one or more second joint beam states among the two or more joint beam states, are ignored or not applied to the downlink.

5. The method according to claim 1, in, The at least one beam state in the one or more beam states includes a joint beam state or an uplink beam state, and The reference signal includes a detection reference signal (SRS).

6. The method according to claim 5, wherein, The SRS is used for antenna switching, wherein the SRS is used for channel state information (CSI) acquisition, or wherein the SRS is associated with a separate closed loop.

7. The method according to claim 1, in, The at least one beam state in the one or more beam states includes a joint beam state or an uplink beam state, and The reference signal includes a sounding reference signal (SRS), which is not used for antenna switching, channel state information (CSI) acquisition, or associated with a single closed loop.

8. The method according to claim 1, wherein, The method further includes any one or more of the following: The channel includes a physical downlink shared channel (PDSCH) that applies a first downlink beam state or a first joint beam state. The channel includes a control resource set (CORESET) that applies a first downlink beam state or a first joint beam state. The reference signal includes a channel state information reference signal (CSI-RS) applying a first downlink beam state or a first joint beam state. The channel includes a Physical Uplink Shared Channel (PUSCH) that applies a first uplink beam state and / or a second uplink beam state, or a first combined beam state and / or a second combined beam state. The channel includes a Physical Uplink Control Channel (PUCCH) applying a first uplink beam state and / or a second uplink beam state, or a first combined beam state and / or a second combined beam state; or The reference signal includes a detection reference signal (SRS) applying a first uplink beam state and / or a second uplink beam state, or a first combined beam state and / or a second combined beam state.

9. The method according to claim 8, in, The first downlink beam state or the first joint beam state is associated with a first flag or a first index in one or more beam states; Wherein, the first uplink beam state or the first joint beam state is associated with a first flag or a first index in one or more beam states; or The second uplink beam state or the second joint beam state is associated with a second flag or a second index in one or more beam states.

10. The method according to claim 1, in, The first joint beam state is not allowed to be applied to the Physical Uplink Shared Channel (PUSCH). Specifically, the first joint beam state is not allowed to be applied to the Physical Uplink Control Channel (PUCCH); or Specifically, the second joint beam state is not allowed to be applied to the probe reference signal (SRS) used for antenna switching or DL ​​CSI acquisition.

11. The method according to claim 1, in, The reference signal includes a detection reference signal (SRS) associated with a separate closed loop in the component carrier, and The method further includes: The communication device receives control information, wherein the control information includes a transmission power command (TPC) for the SRS, wherein the transmission power of the SRS in the component carrier is determined according to the TPC.

12. The method of claim 11, further comprising any one or more of the following: in, The mode indicating the status of a single downlink beam and one or more uplink beams is enabled; Specifically, an index for the individual closed loop is configured for each SRS resource set; or The SRS is associated with a separate closed loop that is separated from the closed loop of the Physical Uplink Shared Channel (PUSCH).

13. The method according to claim 11, wherein, Configure the Physical Uplink Shared Channel (PUSCH) in the component carrier.

14. The method according to claim 13, wherein, The SRS is associated with different beam states or beam states different from PUSCH.

15. The method according to claim 11, wherein, One field in the control information indicates the closed-loop index used for the TPC.

16. The method of claim 15, further comprising any one or more of the following: in, In response to configuring only a single closed loop for the SRS, the field includes zero bits; The control information indicates a closed-loop index list for the corresponding closed loop; The control information indicator block list includes a closed-loop index and a TPC for each block, or The control information includes one or more TPC fields, and the closed-loop index is applied to the one or more TPC fields.

17. The method according to claim 11, wherein, The closed loop associated with the TPC is determined based on at least one of the following: The control resource set (CORESET) or search space set associated with the control information. The time unit of the control information, or The cell, component carrier, or portion bandwidth (BWP) associated with the control information.

18. The method of claim 17, in, The closed loop associated with the TPC is determined based on whether the control information is in the first time unit or the second time unit; or Specifically, the closed loop associated with the TPC is determined based on whether the control information is in an odd-numbered time unit or an even-numbered time unit.

19. The method according to claim 1, further comprising: The communication device associates the at least one beam state with a timing advance group (TAG) index and / or power control parameters, wherein the transmission of the channel or the reference signal in the component carrier is determined based on the TAG index or the power control parameters.

20. The method according to claim 19, in, The power control parameters include power offset or path loss values; or The at least one beam state is associated with the power offset or the path loss value via Radio Resource Control (RRC) or Medium Access Control-Control Unit (MAC-CE).

21. The method according to claim 20, wherein, The power offset includes a power offset value or a power offset index.

22. The method according to claim 19, in, The power control parameters include power offset, and The transmission power used to perform the transmission is based on the path loss estimate of the path loss reference signal (PL-RS) associated with the at least one beam state and the power offset.

23. The method according to claim 19, wherein, The power control parameters include path loss values, and also include any one or more of the following: Wherein, at least one beam state is not associated with the path loss reference signal (PL-RS); or Wherein, the PL-RS associated with the at least one beam state is absent, ignored, or excluded.

24. The method according to claim 1, further comprising: The communication device sends signaling carrying information related to the transmission power of the Sounding Reference Signal (SRS), wherein the signaling includes Radio Resource Control (RRC) or Media Access Control-Control Unit (MAC-CE).

25. A wireless communication method, comprising: The communication equipment sends a Power Headroom Report (PHR) for the Sound Reference Signal (SRS) in response to one or more of the following: An uplink shared channel is configured on the carrier frequency of the serving cell. The mode is enabled. SRS configured with a separate closed loop, and / or The fields in the Media Access Control-Control Unit (MAC-CE) received by the communication device are associated with the PHR and are set to specific values.

26. The method of claim 25, further comprising any one or more of the following: in, The mode indicating the status of a single downlink beam and one or more uplink beams is enabled; Among them, the mode for instructing the reporting of PHRs used for SRS is enabled; The mode is configured either per serving cell or per portion bandwidth (BWP); The SRS is associated with antenna switching or downlink (DL) channel state information (CSI) acquisition; or The SRS is configured with a flag.

27. The method according to claim 26, wherein, The flag is configured per SRS resource or per SRS resource set.

28. The method according to claim 25, wherein, The time unit of the SRS transmission or the time unit of the downlink control information (DCI) that triggers the SRS and / or the PHR is used to determine whether the PHR for the SRS is based on transmission or reference format.

29. The method according to claim 25, wherein, For periodic SRS or semi-persistent SRS, the PHR used for SRS is determined based on the time unit of SRS transmission, whether it is transmission-based or reference format-based.

30. The method according to claim 25, wherein, For aperiodic SRS, the PHR used for SRS is determined based on the time unit of the downlink control information (DCI) that triggers the SRS, whether it is transport-based or reference format-based.

31. The method according to claim 25, wherein, In response to the time unit of the SRS being associated with or overlapping with the time unit of the PHR, the PHR for the SRS is based on transmission.

32. The method according to claim 31, wherein, The PHR is determined based on the first SRS transmission timing in the time unit.

33. The method of claim 31, further comprising any one or more of the following: in, The time unit of the SRS includes the time slot of the SRS or a time-domain window corresponding to the PHR; or The time unit of the PHR includes the time slot of the PHR or the time domain window corresponding to the PHR.

34. The method according to claim 33, wherein, The time-domain window includes the duration from X time units before the SRS or PHR to Y time units after the SRS or PHR, where X and Y are integers.

35. The method according to claim 34, in, X is the same value as Y, or X or Y depends on the capability signaling.

36. The method according to claim 25, wherein, In response to the PHR's time unit being associated with or overlapping with multiple time units corresponding to one or more SRSs, the PHR is sequentially arranged starting from the multiple time units based on the SRS transmission timing in the first time unit.

37. The method according to claim 25, wherein, The Media Access Control-Control Unit (MAC-CE) signaling or Radio Resource Control (RRC) signaling carrying the PHR for the SRS provides one or more of the configured maximum transmission power, maximum power reduction, or maximum permissible radiation.

38. A wireless communication method, comprising: One or more beam states are transmitted by a network device, wherein at least one of the one or more beam states is associated with a channel or reference signal; and The network device transmits the channel or the reference signal according to the at least one beam state.

39. The method according to claim 38, in, The reference signal includes a detection reference signal (SRS) associated with a separate closed loop in the component carrier, and The method further includes: The network device sends control information, which includes a transmission power command (TPC) for the SRS, wherein the transmission power of the SRS in the component carrier is determined according to the TPC.

40. The method of claim 38, wherein, The at least one beam state is associated with a timing advance group (TAG) index and / or power control parameters, wherein the transmission of the channel or the reference signal in the component carrier is determined based on the TAG index or the power control parameters.

41. A wireless communication method, comprising: The network device receives a Power Headroom Report (PHR) for Sound Reference Signal (SRS) in response to one or more of the following: An uplink shared channel is configured on the carrier frequency of the serving cell. The mode is enabled. SRS configured with a separate closed loop, and / or The fields in the Media Access Control-Control Unit (MAC-CE) sent by the network device are associated with the PHR and are set to specific values.

42. The method of claim 41, further comprising any one or more of the following: in, The mode indicating the status of a single downlink beam and one or more uplink beams is enabled; Among them, the mode for instructing the reporting of PHRs used for SRS is enabled; The mode is configured either per serving cell or per portion bandwidth (BWP); The SRS is associated with antenna switching or downlink (DL) channel state information (CSI) acquisition; or The SRS is configured with a flag.

43. An apparatus for wireless communication, the apparatus comprising a processor configured to implement the method according to one or more of claims 1 to 42.

44. A non-transient computer-readable program storage medium having code stored thereon, which, when executed by a processor, causes the processor to perform the method according to one or more of claims 1 to 42.

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