Differential power parameter reporting in multi-panel uplink transmissions

Abstract

Certain aspects of the present disclosure provide techniques for differential power parameter reporting in multi-panel uplink transmissions. A method that can be performed by a user equipment (UE) includes: determining a first transmit power control parameter associated with a first panel of the UE and a differential transmit power control parameter for indicating a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; generating a report message indicating the first transmit power control parameter and the differential transmit power control parameter; and sending the report message to a base station.

Description

Technical Field

[0001] Aspects of the present disclosure relate to wireless communications and, more particularly, to techniques for power control. Background Art

[0002] Wireless communication networks are widely deployed to provide various telecommunication services, such as telephony, video, data, messaging, broadcast, etc. These wireless communication systems may employ multiple access technologies that are capable of supporting communications with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access systems include 3rd Generation Partnership Project (3GPP) Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC FDMA) systems, and Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, etc.

[0003] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at municipal, national, regional and even global levels. New radio technologies such as 5G NR are examples of emerging telecommunication standards. NR is a series of enhancements to the LTE mobile standard released by 3GPP. NR aims to better support mobile broadband Internet access by increasing spectral efficiency, reducing costs, improving services, utilizing new spectrum, and better integrating with other open standards using OFDMA with cyclic prefix (CP) in downlink (DL) and uplink (UL). To do this, NR supports beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.

[0004] However, as the demand for mobile broadband access continues to grow, further improvements to NR and LTE technologies are needed. Preferably, these improvements should be applicable to other multi-access technologies and the telecommunication standards that adopt these technologies. Summary of the invention

[0005] The systems, methods, and devices of the present disclosure each have several aspects, no single one of which is solely responsible for its desirable attributes. Without limiting the scope of the present disclosure as expressed by the appended claims, some features are briefly discussed below. Based on this discussion, and particularly after reading the "Detailed Description" section, it will be understood how the features of the present disclosure provide advantages including improved power control operation.

[0006] Certain aspects are directed to a method that may be performed by a user equipment (UE). The method generally includes determining a first transmit power control parameter associated with a first panel of the UE and a differential transmit power control parameter indicating a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; generating a report message indicating the first transmit power control parameter and the differential transmit power control parameter; and sending the report message to a base station.

[0007] Certain aspects are directed to a method that can be performed by a base station. The method generally includes receiving a report message including a first transmit power control parameter and a differential transmit power control parameter, wherein the first transmit power control parameter is associated with a first panel of a UE, the differential transmit power control parameter indicates a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; calculating the second transmit power control parameter based on the first transmit power control parameter and the differential transmit power control parameter; and performing a power control operation based on the first transmit power control parameter and the second transmit power control parameter.

[0008] Certain aspects are directed to an apparatus for wireless communication by a user equipment (UE). The apparatus generally includes a processing system configured to: determine a first transmit power control parameter associated with a first panel of the UE, and a differential transmit power control parameter indicating a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; and generate a report message indicating the first transmit power control parameter and the differential transmit power control parameter; and a transmitter configured to send the report message to a base station.

[0009] Certain aspects are directed to an apparatus for wireless communication by a base station. The apparatus generally includes a receiver configured to receive a report message including a first transmit power control parameter and a differential transmit power control parameter, wherein the first transmit power control parameter is associated with a first panel of a user equipment (UE), the differential transmit power control parameter indicates a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; and a processing system configured to: calculate the second transmit power control parameter based on the first transmit power control parameter and the differential transmit power control parameter; and perform a power control operation based on the first transmit power control parameter and the second transmit power control parameter.

[0010] Certain aspects are directed to an apparatus for wireless communication by a user equipment (UE). The apparatus generally includes means for determining a first transmit power control parameter associated with a first panel of the UE and a differential transmit power control parameter indicating a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; means for generating a report message indicating the first transmit power control parameter and the differential transmit power control parameter; and means for sending the report message to a base station.

[0011] Certain aspects are directed to an apparatus for wireless communication by a base station. The apparatus generally includes means for receiving a report message including a first transmit power control parameter and a differential transmit power control parameter, wherein the first transmit power control parameter is associated with a first panel of a user equipment (UE), the differential transmit power control parameter indicates a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; means for calculating the second transmit power control parameter based on the first transmit power control parameter and the differential transmit power control parameter; and means for performing a power control operation based on the first transmit power control parameter and the second transmit power control parameter.

[0012] Certain aspects are directed to a computer-readable medium having instructions stored thereon that cause a user equipment (UE) to perform the following operations: determine a first transmit power control parameter associated with a first panel of the UE, and a differential transmit power control parameter for indicating a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; generate a report message indicating the first transmit power control parameter and the differential transmit power control parameter; and send the report message to a base station.

[0013] Certain aspects are directed to a computer-readable medium having instructions stored thereon that cause a base station to perform the following operations: receive a report message including a first transmit power control parameter and a differential transmit power control parameter, wherein the first transmit power control parameter is associated with a first panel of a user equipment (UE), the differential transmit power control parameter indicates a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; calculate the second transmit power control parameter based on the first transmit power control parameter and the differential transmit power control parameter; and perform a power control operation based on the first transmit power control parameter and the second transmit power control parameter.

[0014] Aspects of the present disclosure provide components, apparatuses, processors, and computer-readable media for performing the methods described herein.

[0015] To achieve the aforementioned and related purposes, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail certain illustrative features of one or more aspects. However, these features are only indicative of some of the various ways in which the principles of the various aspects can be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to be able to understand in detail the manner in which the above features of the present disclosure are achieved, a more specific description of the above brief summary may be obtained by reference to a number of aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings illustrate only certain typical aspects of the present disclosure and are therefore not to be considered limiting of its scope, as the description may admit of other equally effective aspects.

[0017] Figure 1 is a block diagram conceptually illustrating an example telecommunications system in accordance with certain aspects of the present disclosure.

[0018] Figure 2 is a block diagram conceptually illustrating designs of example base stations (BSs) and user equipment (UEs) in accordance with certain aspects of the present disclosure.

[0019] Figure 3 is an example frame format for New Radio (NR) in accordance with certain aspects of the present disclosure.

[0020] Figure 4A , 4B 4 and 4C show frequency division multiplexing, time division multiplexing and space division multiplexing respectively.

[0021] Figure 5 is a flow diagram illustrating example operations for wireless communications by a BS in accordance with certain aspects of the present disclosure.

[0022] Figure 6 is a flow chart illustrating example operations for wireless communications by a UE in accordance with certain aspects of the present disclosure.

[0023] Figure 7 A reporting message 700 for reporting a differential power headroom (PHR) parameter and a differential maximum power (Pcmax) parameter is shown in accordance with certain aspects of the present disclosure.

[0024] Figure 8 Reporting messages for reporting differential PHR parameters and Pcmax parameters in accordance with certain aspects of the present disclosure are shown.

[0025] Fig. 9Reporting messages for reporting PHR parameters and differential Pcmax parameters according to certain aspects of the present disclosure are shown.

[0026] Fig.10 A communication device in accordance with aspects of the present disclosure is shown, which may include various components configured to perform operations of the techniques disclosed herein.

[0027] Fig.11 A communication device in accordance with aspects of the present disclosure is shown, which may include various components configured to perform operations of the techniques disclosed herein.

[0028] To facilitate understanding, identical reference numerals have been used, where possible, to designate identical elements in the drawings. It is contemplated that elements disclosed in one aspect may be beneficially utilized on other aspects without specific recitation. DETAILED DESCRIPTION

[0029] Various aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for power control. For example, in some aspects, a power control parameter of a first panel of a user equipment (UE) may be reported to a base station, and a second power control parameter of a second panel of the UE may be reported to the base station. The second power control parameter may be reported using a differential power control parameter indicating a difference between the first power control parameter and the second power control parameter. As used herein, a panel generally refers to an antenna panel that may include a plurality of antenna elements.

[0030] The following description provides an example of power control in a communication system and does not limit the scope, applicability or examples set forth in the claims. Without departing from the scope of the present disclosure, the functions and arrangements of the elements discussed may be changed. Various examples may appropriately omit, replace or add various programs or components. For example, the described method may be performed in an order different from that described, and various steps may be added, omitted or combined. In addition, the features described with respect to some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such a device or method, which is practiced using other structures, functions or structures and functions in addition to or different from the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims. "Exemplary" is used here to mean "used as an example, instance or illustration". Any aspect described as "exemplary" herein is not necessarily interpreted as being superior to or advantageous over other aspects.

[0031] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific radio access technology (RAT) and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, subcarrier, channel, tone, subband, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs.

[0032] The techniques described herein can be used for various wireless networks and radio technologies. Although various aspects may be described herein using terms typically associated with 3G, 4G, and / or new radio (e.g., 5G NR) wireless technologies, various aspects of the present disclosure may be applied to communication systems based on other generations.

[0033] NR access can support various wireless communication services, such as enhanced mobile broadband (eMBB) targeting wide bandwidth (e.g., 80 MHz or above), millimeter wave (mmW) targeting high carrier frequency (e.g., 25 GHz or above), massive machine type communication MTC (mMTC) targeting non-backward compatible MTC technology, and / or mission critical services targeting ultra-reliable low latency communication (URLLC). These services may include latency and reliability requirements. These services may also have different transmission time intervals (TTIs) to meet their respective quality of service (QoS) requirements. In addition, these services can coexist in the same subframe. NR supports beamforming, and the beam direction can be dynamically configured. MIMO transmission with precoding can also be supported. MIMO configuration in DL can support up to 8 transmit antennas, multi-layer DL transmission up to 8 streams, and up to 2 streams per UE. Multi-layer transmission of up to 2 streams per UE can be supported. Aggregation of multiple cells can be supported with up to 8 serving cells.

[0034] Figure 1 An example wireless communication network 100 is shown in which aspects of the present disclosure may be performed. For example, the wireless communication network 100 may be a NR system (e.g., a 5G NR network). Figure 1 As shown, the wireless communication network 100 may communicate with a core network 132. The core network 132 may communicate with one or more base stations (BSs) 110 and / or user equipments (UEs) 120 in the wireless communication network 100 via one or more interfaces.

[0035] like Figure 1As shown, the wireless communication network 100 may include multiple BSs 110a-z (each base station is also individually referred to as BS 110 or collectively referred to as BS 110) and other network entities. BS 110 can provide communication coverage for a specific geographic area (sometimes referred to as a "cell"), which can be fixed or mobile depending on the location of the mobile BS 110. In some examples, BS 110 can use any suitable transmission network to interconnect with each other and / or connect to one or more other BSs or network nodes (not shown) in the wireless communication network 100 through various types of backhaul interfaces (e.g., direct physical connection, wireless connection, virtual network, etc.). Figure 1 In the example shown, BSs 110a, 110b, and 110c may be macro BSs for macro cells 102a, 102b, and 102c, respectively. BS 110x may be a pico BS for pico cell 102x. BSs 110y and 110z may be femto BSs for femto cells 102y and 102z, respectively. A BS may support one or more cells. A network controller 130 may be coupled to a set of BSs 110 and provide coordination and control (e.g., via a backhaul) for these BSs 110.

[0036] BS 110 communicates with UEs 120a-y (each also individually referred to herein as UE 120 or collectively referred to herein as UE 120) in the wireless communication network 100. UEs 120 (e.g., 120x, 120y, etc.) may be dispersed in the wireless communication network 100, and each UE 120 may be fixed or mobile. The wireless communication network 100 may also include a relay station (e.g., relay station 110r), also referred to as a repeater, etc., which receives transmissions of data and / or other information from an upstream station (e.g., BS 110a or UE 120r) and sends transmissions of data and / or other information to a downstream station (e.g., UE 120 or BS 110), or relays transmissions between UEs 120 to facilitate communication between devices.

[0037] According to certain aspects, BS 110 and UE 120 may be configured for power control. Figure 1As shown, BS 110a includes a power manager 112. According to aspects of the present disclosure, the power manager 112 may be configured to: receive a report message including a first transmit power control parameter and a differential transmit power control parameter, wherein the first transmit power control parameter is associated with a first panel of the UE, the differential transmit power control parameter indicates a second transmit power control parameter associated with a second panel of the UE, and the differential transmit power control parameter indicates a difference between the first transmit power control parameter and the second transmit power control parameter; calculate the second transmit power control parameter based on the first transmit power control parameter and the differential transmit power control parameter; and perform a power control operation based on the first transmit power control parameter and the second transmit power control parameter.

[0038] like Figure 1 As shown, UE 120a includes a power manager 122. According to aspects of the present disclosure, the power manager 122 may be configured to determine a first transmit power control parameter associated with a first panel of the UE, and a differential transmit power control parameter indicating a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; generate a report message indicating the first transmit power control parameter and the differential transmit power control parameter; and send the report message to a base station.

[0039] Figure 2 Example components of BS 110a and UE 120a are shown (eg, in Figure 1 In the wireless communication network 100), which can be used to implement various aspects of the present disclosure.

[0040] At BS 110a, transmit processor 220 may receive data from data source 212 and control information from controller / processor 240. The control information may be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid ARQ indicator channel (PHI CH), a physical downlink control channel (PDCCH), a group common PDCCH (GCPDCCH), etc. The data may be for a physical downlink shared channel (PDSCH), etc. A medium access control (MAC)-control element (MAC-CE) is a MAC layer communication structure that may be used for control command exchange between wireless nodes. The MAC-CE may be carried in a shared channel such as a physical downlink shared channel (PDSCH), a physical uplink shared channel (PUSCH), or a physical sidelink shared channel (PSSCH).

[0041] The processor 220 may process (e.g., encode and symbol map) data and control information to obtain data symbols and control symbols, respectively. The transmit processor 220 may also generate reference symbols such as primary synchronization signals (PSS), secondary synchronization signals (SSS), and channel state information reference signals (CSI-RS). If applicable, the transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, and / or reference symbols, and may provide an output symbol stream to a modulator (MOD) 232a-232t. Each modulator 232 may process its own output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The downlink signals from modulators 232a-232t may be transmitted via antennas 234a-234t, respectively.

[0042] At UE 120a, antennas 252a-252r may receive downlink signals from BS 110a and may provide received signals to demodulators (DEMODs) in transceivers 254a-254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all demodulators 254a-254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 120a to a data sink 260, and provide decoded control information to a controller / processor 280.

[0043] On the uplink, at the UE 120a, a transmit processor 264 may receive and process data from a data source 262 (e.g., for a physical uplink shared channel (PUSCH)) and control information from a controller / processor 280 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 264 may also generate reference symbols for reference signals (e.g., a sounding reference signal (SRS)). If applicable, the symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, further processed by a modulator in a transceiver 254a-254r (e.g., for SC-FDM, etc.), and transmitted to the BS 110a. At the BS 110a, the uplink signal from the UE 120a may be received by the antenna 234, processed by the modulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120a. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to the controller / processor 240 .

[0044] Memories 242 and 282 may store data and program codes for BS 110a and UE 120a, respectively.A scheduler 244 may schedule UEs for data transmission on the downlink and / or uplink.

[0045] The antennas 252, processors 266, 258, 264 and / or controller / processor 280 of the UE 120a and / or the antennas 234, processors 220, 230, 238 and / or controller / processor 240 of the BS 110a may be used to perform the various techniques and methods described herein. Figure 2 As shown, the controller / processor 240 of the BS 110a has a power manager 112 according to various aspects described herein. Figure 2 As shown, the controller / processor 280 of the UE 120a has a power manager 122 according to various aspects described herein. Although shown as a controller / processor, other components of the UE 120a and the BS 110a can be used to perform the operations described herein. In some cases, the antenna 234 or the antenna 252 can be configured as multiple antenna panels to implement a multi-panel MIMO communication system. In some aspects, power control parameters can be reported for each panel of the UE.

[0046] NR can utilize orthogonal frequency division multiplexing (OFDM) with cyclic prefix (CP) on uplink and downlink. NR can support half-duplex operation using time division duplex (TDD). OFDM and single carrier frequency division multiplexing (SC-FDM) divide the system bandwidth into multiple orthogonal subcarriers, which are also commonly called tones, bins, etc. Each subcarrier can be modulated with data. Modulation symbols can be sent in the frequency domain using OFDM and in the time domain using SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers can depend on the system bandwidth. The minimum resource allocation called a resource block (RB) can be 12 consecutive subcarriers. The system bandwidth can also be divided into subbands. For example, a subband can cover multiple RBs. NR can support a basic subcarrier spacing (SCS) of 15KHz, and other SCSs (e.g., 30kHz, 60kHz, 120kHz, 240kHz, etc.) can be defined relative to the basic SCS.

[0047] Figure 3 300 is a diagram showing an example of a frame format for NR. The transmission timeline for each of the downlink and uplink may be divided into radio frame units. Each radio frame may have a predetermined duration (e.g., 10 ms) and may be divided into 10 subframes, each subframe 1 ms, indexed from 0 to 9. Depending on the SCS, each subframe may include a variable number of slots (e.g., 1, 2, 4, 8, 16 ... slots). Depending on the SCS, each slot may include a variable number of symbol periods (e.g., 7 or 14 symbols). The symbol period in each slot may be assigned an index. A microslot, which may be referred to as a subslot structure, refers to a transmission time interval having a duration less than a slot (e.g., 2, 3, or 4 symbols). Each symbol in a slot may indicate a link direction (e.g., DL, UL, or flexible) for data transmission, and the link direction of each subframe may be switched dynamically. The link direction may be based on the slot format. Each slot may include DL / UL data and DL / UL control information.

[0048] Example Power Control Techniques

[0049] Certain aspects of the present disclosure are generally directed to power control operations for multi-panel wireless communications. For example, different panels of a wireless node may be used to implement multi-panel wireless communications. In some aspects, a user equipment (UE) may indicate to a base station a power headroom (PH) and a configured maximum transmit power (P) associated with each panel of the UE. CMAX ), thereby allowing the BS to perform power control operations.

[0050] Figure 4A , 4B 4C and 4C respectively show frequency division multiplexing, time division multiplexing and space division multiplexing. Figure 4A As shown, the physical uplink shared channels (PUSCH) 402, 404 may be transmitted using time division duplex (TDD). For example, different time resources may be used to transmit the PUSCH 402, 404. Figure 4B As shown, frequency division duplex (FDD) may be used to transmit PUSCH 402, 404. In other words, different frequency resources may be used to transmit PUSCH 402, 404. Figure 4C As shown, different spatial regions may be used to implement spatial division multiplexing (SDM) for transmission of PUSCH 402, 404. Separate panels of a UE may be scheduled for transmission via a single downlink control information (DCI) transmission or separate DCI transmissions. As described herein, a UE may indicate to a base station a power headroom (PH) and a configured maximum transmit power (P) associated with each panel of the UE. CMAX ), thereby allowing the BS to perform power control operations.

[0051] The first panel of the UE may be associated with a first transmission precoding matrix indication (TPMI1), a first sounding reference signal (SRS) resource indicator (SRI1). The second panel of the UE may be associated with a first UL transmission configuration indicator (TCI1), and the second panel of the UE may be associated with a second TPMI (TPMI 2), a second SRI (SRI 2), and a second UL TCI (TCI 2).

[0052] Power control of PUSCH can be performed using real or virtual transmission techniques. For example, a UE can transmit PUSCH on the active uplink (UL) bandwidth part (BWP) b of carrier f in serving cell c using parameter set configuration indexed j and PUSCH power control adjustment state indexed l. For real transmission techniques, the transmit power (P PUSCH ) can be determined using the following equation:

[0053]

[0054] in is the target signal-to-interference-plus-noise ratio (SINR) set by the initial power (P0) value, is the bandwidth of PUSCH resource allocation expressed in the number of resource blocks used for PUSCH transmission, α b,f,c, is the path loss compensation factor, PL b,f,c is the path loss associated with the reference signal (RS), Δ TF,f,c is an adjustment related to the modulation and coding scheme (MCS), and f b,f,c It is the PUSCH power control adjustment state.

[0055] For virtual transmission, the transmit power of PUSCH can be determined using the following equation:

[0056]

[0057] where default parameters are used for i, j, q d , l.

[0058] Although techniques for PUSCH transmission have been described for ease of understanding, aspects described herein may be applied to transmission of various suitable signals, such as PUSCH, physical uplink control channel (PUCCH), and SRS. For example, a UE may report PH for PUSCH, PUCCH, and SRS. Per-panel power headroom calculations at the UE (e.g., panel ID k=0,1) may include a type 1-per-panel PH for PUSCH, according to the equation:

[0059] PH type1，b，f，c (i,j,q d , l, k) = P CMAX，f，c (i, k)-P k，PUSCH (i,j,q d , l)

[0060] Type 2 of PUCCH - PH per panel can be calculated according to the following equation:

[0061] PH type2，b，f，c (i, q u ,q d , l, k) = P CMAX，f，c (i, k)-P k，PUCCH (i, q u ,q d , l)

[0062] And the Type 3-per-panel PH of SRS can be calculated according to the following equation:

[0063] PH type3，b，f，c (i, q s ,q d , l, k) = P CMAX，f，c (i, k)-P k，SRS (i, q s ,q d , l)

[0064] Where P CMAX，f，c (i, k) is the maximum transmit power applicable to the configuration of panel k. In some cases, the maximum transmit power of the configuration of all panels may be the same. In addition, the PH may be calculated using the real or virtual techniques described herein.

[0065] Panel ID k = 0, 1 may be implicitly associated with various parameters. These parameters may include CORESETpoolindex, where a CORESET may be configured with CORESETpoolindex, and values ​​0 and 1 are associated with different UE panels. These parameters may also include SRS resource set ID / SRS resource ID, where one SRS set ID or SRS resource ID is associated with a UE panel, and another SRS set ID or SRS resource ID is associated with another UE panel.

[0066] The parameters may include a beam ID / beam group ID, where a beam ID or beam group ID is associated with a UE panel and another beam ID or beam group ID is associated with another UE panel. The beam may be a transmission configuration indicator (TCI) or spatial relationship information. The parameters may also include a closed loop index with values ​​of 0 and 1 associated with different UE panels (e.g., an uplink transmit power control configuration may be configured with a closed loop index).

[0067] The parameters may also include an antenna port ID / antenna port group ID. The antenna port may be a PUSCH, SRS, or phase tracking reference signal (PTRS) antenna port. An antenna port ID or antenna port group ID may be associated with a UE panel, and another antenna port ID or antenna port group ID may be associated with another UE panel.

[0068] The parameters may include a demodulation reference signal (DMRS) code division multiplexing (CDM) group ID, where a DMRS CDM group ID is associated with a UE panel and another DMRS CDM group ID is associated with another UE panel. The parameters may also include a timing advance group (TAG) ID (e.g., which may be configured for panel-specific timing advance). A TAG ID may be associated with a UE panel and another TAG ID may be associated with another UE panel.

[0069] The parameters may also include a PUCCH resource ID / resource group ID, where a PUCCH resource ID or resource group ID is associated with a UE panel and another PUCCH resource ID or resource group ID is associated with another UE panel. The parameters may also include multiple radio network temporary identifiers (RNTIs), where an RNTI is associated with a UE panel and another RNTI is associated with another UE panel. The parameters may also include a physical cell ID (PCI) or a synchronization signal block (SSB) set ID, where a PCI or SSB set ID is associated with a UE panel and another PCI or SSB set ID is associated with another UE panel.

[0070] Certain aspects of the present disclosure provide techniques for reporting PH, Pcmax, or both using differential reporting techniques. For example, certain aspects provide support for reporting differential PH values ​​in a multi-panel PH report (PHR). A first PH value can be reported using an absolute PH value (PH1) and a second PH value (PH2) can be reported using a difference from the first PH value (dPH2). For example, PH1 can be calculated using the following equation:

[0071] PH1=PH(type X,panel 0)

[0072] And dPH2 can be calculated using the following equation:

[0073] dPH2=PH(type X, panel 1)-PH(type X, panel 0)

[0074] Wherein PH(type X, panel 1) is the PH of panel 1 having type X (eg, type 1, as described herein), and PH(type X, panel 0) is the PH of panel 0 having type X.

[0075] As another example, certain aspects provide support for reporting differential Pcmax values ​​in a report message. For example, a first Pcmax (Pcmax1) value may be reported using an absolute Pcmax value, and a second Pcmax value may be reported by a difference (dPcmax2) from the first Pcmax value. Thus, Pcmax1 may be calculated by the following formula:

[0076] Pcmax1=P CMAX，f，c (0)

[0077] And dPcmax2 can be calculated using the following equation:

[0078] dPcmax2=P CMAX，f，c (1)-P CMAX，f，c (0)

[0079] Where P CMAX，f，c (1) is the maximum transmit power of the configuration of panel 1, and P CMAX，f，c (0) is the maximum transmit power of panel 0.

[0080] Figure 5 5 is a flow diagram illustrating example operations 500 for wireless communications in accordance with certain aspects of the present disclosure. Operations 500 may be performed, for example, by a BS (eg, such as BS 110a in wireless communication network 100).

[0081] Operation 500 may be implemented as a processor on one or more processors (e.g., Figure 2In addition, in operation 500, the communication may be performed, for example, via one or more antennas (e.g., Figure 2 The BS may transmit and receive signals through an antenna 234. In some aspects, the BS may transmit and / or receive signals through a bus interface of one or more processors (eg, controller / processor 240) that acquire and / or output signals.

[0082] Operations 500 may begin at block 505, where the BS receives a report message (e.g., a medium access control (MAC) control element (MAC-CE)) including a first transmit power control parameter (e.g., a PHR parameter or a Pcmax parameter) and a differential transmit power control parameter. The first transmit power control parameter may be associated with a first panel of the UE, and the differential transmit power control parameter indicates a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter. At block 510, the BS may calculate the second transmit power control parameter based on the first transmit power control parameter and the differential transmit power control parameter, and at block 515, perform a power control operation based on the first transmit power control parameter and the second transmit power control parameter.

[0083] Figure 6 6 is a flow diagram illustrating example operations 600 for wireless communications, in accordance with certain aspects of the present disclosure. Operations 600 may be performed, for example, by a UE, such as UE 120a in wireless communications network 100.

[0084] Operation 600 may be a supplementary operation of operation 500 performed by the UE on the BS. Operation 600 may be implemented as a processor (eg, Figure 2 In addition, in operation 600, the communication may be performed, for example, via one or more antennas (e.g., Figure 2 The UE may transmit and receive signals through an antenna 252. In some aspects, the UE may transmit and / or receive signals through a bus interface of one or more processors (eg, controller / processor 280) that acquire and / or output signals.

[0085] Operations 600 may begin at block 605, where the UE determines a first transmit power control parameter associated with a first panel of the UE and a differential transmit power control parameter indicating a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter. At block 610, the UE generates a report message indicating the first transmit power control parameter and the differential transmit power control parameter, and at block 615, transmits the report message to a base station.

[0086] Figure 7 A report message 700 (e.g., MAC-CE) for reporting differential PH parameters and differential Pcmax parameters according to certain aspects of the present disclosure is shown. As shown, the report message 700 includes a PH1 field 702 for indicating the PH parameters of a first panel of the UE, and a dPH2 field 706 for indicating the differential PH parameters of a second panel of the UE. The PH value in the PH1 field 702 can be reported as 6 bits, while the dPH value in the dPH2 field 706 can be reported as 4 bits.

[0087] The report message 700 may also include a Pcmax1 field 704 for indicating the Pcmax parameter of the first panel of the UE, and a dPcmax2 field 708 for indicating the differential Pcmax parameter of the second panel of the UE. The Pcmax value in the Pcmax1 field 704 may be reported as 6 bits, while the dPcmax value in the dPcmax2 field 708 may be reported as 4 bits.

[0088] The report message 700 may also include a Pk field, k being an integer associated with a panel of the UE. For example, the report message 700 may include a P1 field 710 for a first panel of the UE and a P2 field 714 for a second panel of the UE. The Pk field indicates whether the MAC entity applies power backoff to the kth panel (e.g., panel 1 and panel 2) due to power management when reporting the corresponding value of Pcmax.

[0089] The report message 700 may also include a Vk field, k being an integer associated with a panel of the UE. For example, the report message 700 may include a V1 field 712 for a first panel of the UE and a V2 field 716 for a second panel of the UE. Vk is a field that indicates whether the PH value is based on an actual transmission for the kth panel or a virtual reference format. In addition, for Type 1, Type 2, and Type 3 PH, the V field may be set to 0 to indicate that the PH value contains the relevant P CMAX,f,c The V field may be set to 1 to indicate the presence of a P field. CMAX,f,c The fields of the field are omitted. Figure 7An example of a report message 700 having three octets in a MAC-CE is shown.

[0090] Figure 8 A report message 800 for reporting differential PH parameters and Pcmax parameters according to certain aspects of the present disclosure is shown. For example, the report message 800 may include a PH1 field 702 and a dPH2 field 706. The PH value in the PH1 field 702 may be reported as 6 bits, while the dPH value in the dPH2 field 706 may be reported as 2 bits. In SDM, two UL transmissions are spatially multiplexed, can be used for simultaneous transmission, and can be scheduled by a single transmission configuration indicator (TCI). Therefore, the power difference between two transmissions from different panels may not be large, as a large power difference may cause interference problems. Therefore, in some implementations, only 2 bits may be used for the dPH2 field 706. Figure 8 An example of a report message 800 having two octets in a MAC-CE is shown.

[0091] The report message may also include a Pcmax field 802 for indicating a Pcmax parameter. The Pcmax parameter may be cell-specific and panel-common and may be reported by 6 bits. The report message 800 also includes a P field 804, which indicates whether the MAC entity applies power backoff to the cell-specific and panel-common values ​​of Pcmax due to power management. The report message 800 may also include a V field 806, which indicates whether the PH value is based on a real transmission to the cell or a virtual reference format. In addition, for Type 1, Type 2, and Type 3 PH, the V field may be set to 0 to indicate that the relevant Pcmax value is contained in the V field 806. CMAX,f,c The V field may be set to 1 to indicate the presence of a P field. CMAX,f,c The fields of the field are omitted.

[0092] Fig. 9 A report message 900 for reporting a PH parameter and a differential Pcmax parameter according to certain aspects of the present disclosure is shown. For example, the report message 900 may include a PH1 field 702 indicating a PH parameter of a first panel of the UE, and a PH2 field 902 indicating a PH parameter of a second panel of the UE. The PH value in the PH1 field 702 may be reported as 6 bits, and the PH value in the PH2 field 902 may be reported as 6 bits.

[0093] The report message 900 may also include a Pcmax1 field 704 for indicating a Pcmax parameter of a first panel of the UE, and a dPcmax2 field 708 for indicating a differential Pcmax parameter of a second panel of the UE. The Pcmax value in the Pcmax1 field 704 may be reported as 6 bits, and the dPcmax value in the dPcmax2 field 708 may be reported as 2 bits. The Pcmax associated with a panel may correspond to a power class of the panel. Multiple panels of the UE may be associated with the same or similar power classes, and therefore, the Pcmax values ​​of the panels may be relatively close. Therefore, in some implementations, only 2 bits may be used for the dPcmax value. In addition, the UE may control the power backoff value of the panel to allow 2 bits to be used to report dPcmax.

[0094] Fig.10 A communication device 1000 is shown, which may include various components (eg, corresponding to means-plus-function components) configured to perform operations of the techniques disclosed herein, such as Figure 6 The communication device 1000 includes a processing system 1002 coupled to a transceiver 1008 (e.g., a transmitter and / or a receiver). The transceiver 1008 is configured to transmit and receive signals, such as the various signals described herein, for the communication device 1000 via an antenna 1010. In some cases, the antenna 1010 may include multiple antenna panels for implementing a multi-panel communication system. The processing system 1002 may be configured to perform processing functions of the communication device 1000, including processing signals received and / or transmitted by the communication device 1000.

[0095] The processing system 1002 includes a processor 1004 coupled to a computer readable medium / memory 1012 via a bus 1006. In some aspects, the computer readable medium / memory 1012 is configured to store instructions (e.g., computer executable code) that, when executed by the processor 1004, cause the processor 1004 to perform Figure 6, or other operations for performing various techniques discussed herein for power control. In some aspects, the computer-readable medium / memory 1012 stores code 1014 for determining a first transmit power control parameter associated with a first panel of the UE (e.g., a first antenna panel associated with antenna 1010), and a differential transmit power control parameter for indicating a second transmit power control parameter associated with a second panel of the UE (e.g., a second antenna panel associated with antenna 1010), the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; code 1016 for generating a report message indicating the first transmit power control parameter and the differential transmit power control parameter; and code 1018 for sending the report message to a base station. In some aspects, the processor 1004 has circuitry configured to implement the code stored in the computer-readable medium / memory 1012. Processor 1004 includes: a circuit 1020 for determining a first transmit power control parameter associated with a first panel of the UE, and a differential transmit power control parameter for indicating a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating the difference between the first transmit power control parameter and the second transmit power control parameter; a circuit 1022 for generating a report message indicating the first transmit power control parameter and the differential transmit power control parameter; and a circuit 1024 for sending the report message to a base station.

[0096] Fig.11 A communication device 1100 is shown, which may include various components (eg, corresponding to means-plus-function components) configured to perform operations of the techniques disclosed herein, such as Figure 5 The communication device 1100 includes a processing system 1102 coupled to a transceiver 1108 (e.g., a transmitter and / or a receiver). The transceiver 1108 is configured to transmit and receive signals, such as the various signals described herein, for the communication device 1100 via an antenna 1110. In some cases, the antenna 1110 may include multiple antenna panels for implementing a multi-panel communication system. The processing system 1102 may be configured to perform processing functions of the communication device 1100, including processing signals received and / or transmitted by the communication device 1100.

[0097] The processing system 1102 includes a processor 1104 coupled to a computer-readable medium / memory 1112 via a bus 1106. In some aspects, the computer-readable medium / memory 1112 is configured to store instructions (e.g., computer-executable code) that, when executed by the processor 1104, cause the processor 1104 to perform Figure 5, or other operations for performing various techniques discussed herein for power control. In some aspects, the computer-readable medium / memory 1112 stores code 1114 for receiving a report message including a first transmit power control parameter and a differential transmit power control parameter, wherein the first transmit power control parameter is associated with a first panel of the UE, the differential transmit power control parameter indicates a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; code 1116 for calculating the second transmit power control parameter based on the first transmit power control parameter and the differential transmit power control parameter; and code 1118 for performing power control operations based on the first transmit power control parameter and the second transmit power control parameter. In some aspects, the processor 1104 has circuitry configured to implement the code stored in the computer-readable medium / memory 1112. Processor 1104 includes a circuit 1120 for receiving a report message including a first transmit power control parameter and a differential transmit power control parameter, wherein the first transmit power control parameter is associated with a first panel of the UE, the differential transmit power control parameter indicates a second transmit power control parameter associated with a second panel of the UE, and the differential transmit power control parameter indicates a difference between the first transmit power control parameter and the second transmit power control parameter; a circuit 1122 for calculating the second transmit power control parameter based on the first transmit power control parameter and the differential transmit power control parameter; and a circuit 1124 for performing a power control operation based on the first transmit power control parameter and the second transmit power control parameter.

[0098] The techniques described herein can be used for various wireless communication technologies such as NR (e.g., 5G NR), 3GPP Long Term Evolution (LTE), Advanced LTE (LTE-A), Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal Frequency Division Multiple Access (OFDMA), Single Carrier Frequency Division Multiple Access (SC-FDMA), Time Division Synchronous Code Division Multiple Access (TD-SCDMA), and other networks. The terms "network" and "system" are often used interchangeably. A CDMA network can implement radio technologies such as Universal Terrestrial Radio Access (UTRA), cdma2000, and the like. UTRA includes Wideband CDMA (WCDMA) and other variants of CDMA. cdma2000 covers IS-2000, IS-95, and IS-856 standards. A TDMA network can implement radio technologies such as Global System for Mobile Communications (GSM). OFDMA networks can implement radio technologies such as NR (e.g., 5GRA), Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDMA, etc. UTRA and E-UTRA are part of Universal Mobile Telecommunications System (UMTS). LTE and LTE-A are versions of UMTS that use E-UTRA. UTRA, E-UTRA, UMTS, LTE, LTE-A, and GSM are described in documents from an organization named "3rd Generation Partnership Project" (3GPP). cdma2000 and UMB are described in documents from an organization named "3rd Generation Partnership Project 2" (3GPP2). NR is an emerging wireless communication technology under development.

[0099] In 3GPP, the term "cell" can refer to the coverage area of ​​a Node B (NB) and / or a NB subsystem serving the coverage area, depending on the context in which the term is used. In NR systems, the terms "cell" and BS, next-generation Node B (gNB or gNodeB), access point (AP), distributed unit (DU), carrier, or transmit receive point (TRP) can be used interchangeably. The BS can provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. A macro cell can cover a relatively large geographic area (e.g., a radius of several kilometers) and can allow unrestricted access to UEs with service subscriptions. A pico cell can cover a relatively small geographic area and can allow unrestricted access to UEs with service subscriptions. A femto cell can cover a relatively small geographic area (e.g., a home) and can allow limited access to UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs of users in a home, etc.). The BS of a macro cell can be called a macro BS. The BS of a pico cell can be called a pico BS. The BS of a femto cell can be called a femto BS or a home BS.

[0100] UE may also be referred to as a mobile station, a terminal, an access terminal, a subscriber unit, a station, a customer premises equipment (CPE), a cellular phone, a smart phone, a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, an appliance, a medical device or medical equipment, a biosensor / device, a wearable device such as a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring, a smart bracelet, etc.), an entertainment device (e.g., a music device, a video device, a satellite radio, etc.), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium. Some UEs may be considered machine type communication (MTC) devices or evolved MTC (eMTC) devices. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a BS, another device (e.g., a remote device), or some other entity. For example, a wireless node can provide connectivity to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices, which may be narrowband IoT (NB-IoT) devices.

[0101] In some examples, access to the air interface can be scheduled. A scheduling entity (e.g., BS) allocates resources for communications between some or all devices and equipment within its service area or cell. A scheduling entity may be responsible for scheduling, allocating, reconfiguring, and releasing resources for one or more subordinate entities. That is, for scheduling communications, subordinate entities utilize resources allocated by the scheduling entity. The base station is not the only entity that can act as a scheduling entity. In some examples, a UE may act as a scheduling entity and may schedule resources for one or more subordinate entities (e.g., one or more other UEs), and other UEs may use the resources scheduled by the UE for wireless communications. In some examples, a UE may act as a scheduling entity in a peer-to-peer (P2P) network and / or a mesh network. In a mesh network example, in addition to communicating with a scheduling entity, UEs may also communicate directly with each other.

[0102] The methods disclosed herein include one or more steps or actions for implementing these methods. Without departing from the scope of the claims, the method steps and / or actions can be interchangeable with each other. In other words, unless a specific order of steps or actions is specified, the order and / or use of specific steps and / or actions can be modified without departing from the scope of the claims.

[0103] As used herein, a phrase indicating "at least one of" a list of items refers to any combination of those items, including single members. For example, "at least one of a, b, or c" is intended to cover any combination of a, b, c, ab, ac, bc, and abc, as well as multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other combination order of a, b, c).

[0104] As used herein, the term "determining" includes a variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, etc. In addition, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), etc. In addition, "determining" may include resolving, selecting, choosing, establishing, etc.

[0105] The foregoing description is to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Therefore, the claims are not intended to be limited to the aspects shown herein, but to conform to the full scope consistent with the language of the claims, wherein, unless otherwise specified, the elements in the singular form do not mean "one and only one", but "one or more". Unless otherwise specified, the term "some" refers to one or more. All structural and functional equivalents of the elements throughout the various aspects described in this disclosure that are known or will be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be included in the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims. No claim element can be interpreted under the provisions of 35 U.S.C. § 112 (f) unless the element is explicitly stated using the phrase "parts for...", or in the case of a method claim, the element is stated using the phrase "step for...".

[0106] The various operations of the above method can be performed by any suitable component that can perform the corresponding function. The component may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs) or processors. Generally, in the case of operations shown in the figure, these operations can have corresponding component-plus-function components with similar numbers.

[0107] The various illustrative logical blocks, modules, and circuits described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but alternatively, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration.

[0108] If implemented in hardware, an example hardware configuration may include a processing system in a wireless node. The processing system may be implemented using a bus architecture. Depending on the specific application of the processing system and the overall design constraints, the bus may include any number of interconnecting buses and bridges. The bus may link various circuits together, including a processor, a machine-readable medium, and a bus interface. The bus interface may be used to connect a network adapter, etc., to the processing system via the bus. The network adapter may be used to implement the signal processing functions of the PHY layer. In a user terminal (see Figure 1 ), a user interface (e.g., keyboard, display, mouse, joystick, etc.) may also be connected to the bus. The bus may also link various other circuits, such as timing sources, peripherals, voltage regulators, power management circuits, etc., which are well known in the art and are not described further. The processor may be implemented using one or more general and / or special purpose processors. Examples include microprocessors, microcontrollers, DSP processors, and other circuits that can execute software. Those skilled in the art will recognize how to best implement the functionality of the described processing system depending on the specific application and the overall design constraints imposed on the entire system.

[0109] If implemented in software, these functions can be stored or transmitted as one or more instructions or codes to a computer-readable medium. Software should be broadly understood as instructions, data, or any combination thereof, whether it refers to software, firmware, middleware, microcode, hardware description language, or other. Computer-readable media include computer storage media and communication media, and communication media include any media that facilitates the transfer of computer programs from one place to another. The processor can be responsible for managing the bus and general processing, including the execution of software modules stored on the machine-readable storage medium. The computer-readable storage medium can be coupled to the processor so that the processor can read information from the storage medium and write information to the storage medium. Alternatively, the storage medium can be integrated into the processor. For example, the machine-readable medium may include a transmission line, a carrier modulated by data, and / or a computer-readable storage medium on which instructions separated from the wireless node are stored, all of which can be accessed by the processor through a bus interface. Alternatively or additionally, the machine-readable medium or any part thereof can be integrated into the processor, such as in the case of a cache and / or a general register file. For example, examples of machine-readable storage media may include RAM (random access memory), flash memory, ROM (read-only memory), PROM (programmable read-only memory), EPROM (erasable programmable read-only memory), EEPROM (electrically erasable programmable read-only memory), registers, magnetic disks, optical disks, hard drives, or any other suitable storage media or any combination thereof. Machine-readable media may be included in a computer program product.

[0110] A software module may include a single instruction or multiple instructions and may be distributed across several different code segments, between different programs, and across multiple storage media. A computer-readable medium may include multiple software modules. A software module includes instructions that, when executed by a device such as a processor, cause a processing system to perform various functions. A software module may include a sending module and a receiving module. Each software module may reside in a single storage device or may be distributed across multiple storage devices. For example, when a triggering event occurs, a software module may be loaded from a hard drive into a RAM. During the execution of a software module, a processor may load some instructions into a cache to increase access speed. Then, one or more cache lines may be loaded into a general register file for execution by a processor. When referring to the functions of the following software modules, it should be understood that such functions are implemented by a processor when instructions from the software module are executed.

[0111] In addition, any connection is properly referred to as a computer-readable medium. For example, if a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technology such as infrared (IR), radio, and microwave are used to transmit software from a website, server, or other remote source, the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technology (such as infrared, radio, and microwave) are included in the definition of the medium. Disks and optical disks used herein include compact disks (CDs), laser disks, optical disks, digital versatile disks (DVDs), floppy disks, and Blu-ray disks, wherein disks generally reproduce data magnetically, while optical disks reproduce data optically with lasers. Therefore, in some aspects, a computer-readable medium may include a non-temporary computer-readable medium (e.g., a tangible medium). In addition, for other aspects, a computer-readable medium may include a temporary computer-readable medium (e.g., a signal). The above combination should also be included in the scope of computer-readable media.

[0112] Thus, certain aspects may include a computer program product for performing the operations presented herein. For example, such a computer program product may include a computer-readable medium having instructions stored (and / or encoded) thereon, the instructions being executable by one or more processors to perform the operations described herein, for example, for performing the operations described herein and in Figure 5-6 The operations shown in the instructions.

[0113] In addition, it should be understood that the modules and / or other suitable components for performing the methods and techniques described herein can be downloaded and / or otherwise acquired by a user terminal and / or a base station. For example, such a device can be coupled to a server to facilitate the transfer of components for performing the methods described herein. Alternatively, the various methods described herein can be provided by a storage component (e.g., RAM, ROM, a physical storage medium such as a compact disk (CD) or a floppy disk, etc.), so that the user terminal and / or the base station can obtain the various methods when the storage component is coupled to the device or provided to the device. In addition, any other suitable technology for providing the methods and techniques described herein to the device can be utilized.

[0114] It is to be understood that the claims are not limited to the precise configuration and components described above. Various modifications, changes and variations may be made in the arrangement, operation and details of the methods and apparatus described above without departing from the scope of the claims.

Claims

1. A method for wireless communication by a user equipment (UE), comprising: determining a first transmit power control parameter associated with a first panel of the UE and a differential transmit power control parameter indicating a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; generating a report message indicating the first transmit power control parameter and the differential transmit power control parameter; as well as sending the report message to a base station, The first transmit power control parameter is indicated via the report message using a larger number of bits than the differential transmit power control parameter.

2. The method according to claim 1, wherein The first transmit power control parameter comprises a first power headroom (PH) parameter; and The second transmit power control parameter includes a second PH parameter, and the differential transmit power control parameter is a differential PH parameter indicating a difference between the first PH parameter and the second PH parameter.

3. The method according to claim 2, wherein the first PH parameter is indicated via the report message using 6 bits and wherein, And wherein the differential PH parameter is indicated via the report message using 4 bits. 4 . The method of claim 2 , wherein the first PH parameter is indicated via the report message using 6 bits, and wherein the differential PH parameter is indicated via the report message using 2 bits.

5. The method of claim 2, further comprising determining a maximum transmit power (Pcmax) parameter, wherein the Pcmax parameter is common to the first panel and the second panel of the UE, and wherein the report message includes the Pcmax parameter. The method of claim 5 , wherein the Pcmax parameter is specific to a serving cell of the UE. The method according to claim 5 , wherein the Pcmax parameter is indicated via the report message using 6 bits. 8 . The method of claim 2 , wherein the first PH parameter is indicated via the report message using 6 bits, and wherein the second PH parameter is indicated via the report message using 6 bits.

9. The method of claim 2, further comprising determining a first Pcmax parameter associated with the first panel of the UE, and a differential Pcmax parameter indicating a second Pcmax parameter associated with the second panel of the UE, the differential Pcmax parameter indicating a difference between the first Pcmax parameter and the second Pcmax parameter, and wherein the report message further comprises the first Pcmax parameter and the differential Pcmax parameter. 10 . The method of claim 9 , wherein the first Pcmax parameter is indicated via the report message using 6 bits, and wherein the differential Pcmax parameter is indicated via the report message using 2 bits.

11. The method according to claim 1, wherein The first transmit power control parameter comprises a first Pcmax parameter; and The second transmit power control parameter includes a second Pcmax parameter. 12 . The method of claim 9 , wherein the first Pcmax parameter is indicated via the report message using 6 bits, and wherein the differential Pcmax parameter is indicated via the report message using 4 bits.

13. The method of claim 1, wherein the report message comprises a medium access control (MAC) control element (MAC-CE).

14. The method of claim 1, wherein the first transmit power control parameter and the second transmit power control parameter are used to configure transmit power for transmission of a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), or a sounding reference signal (SRS).

15. A method for wireless communication by a base station, comprising: receiving a report message including a first transmit power control parameter and a differential transmit power control parameter, wherein the first transmit power control parameter is associated with a first panel of a user equipment (UE), the differential transmit power control parameter indicates a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; calculating the second transmit power control parameter based on the first transmit power control parameter and the differential transmit power control parameter; and performing a power control operation based on the first transmit power control parameter and the second transmit power control parameter, The first transmit power control parameter is indicated via the report message using a larger number of bits than the differential transmit power control parameter.

16. The method according to claim 15, wherein The first transmit power control parameter comprises a first power headroom (PH) parameter; and The second transmit power control parameter includes a second PH parameter, and the differential transmit power control parameter is a differential PH parameter indicating a difference between the first PH parameter and the second PH parameter. 17 . The method of claim 16 , wherein the first PH parameter is indicated via the report message using 6 bits, and wherein the differential PH parameter is indicated via the report message using 4 bits.

18. The method of claim 16, wherein the first PH parameter is indicated via the report message using 6 bits, and wherein the differential PH parameter is indicated via the report message using 2 bits.

19. The method of claim 16, wherein the report message further includes a maximum transmit power (Pcmax) parameter, wherein the Pcmax parameter is common to the first panel and the second panel of the UE, and wherein the power control operation is also performed based on the Pcmax parameter.

20. The method of claim 19, wherein the Pcmax parameter is specific to a serving cell of the UE.

21. The method of claim 19, wherein the Pcmax parameter is indicated via the report message using 6 bits.

22. The method of claim 16, wherein the first PH parameter is indicated via the report message using 6 bits, and wherein the second PH parameter is indicated via the report message using 6 bits.

23. The method of claim 16, wherein the report message further comprises a first Pcmax parameter associated with the first panel of the UE, and a differential Pcmax parameter indicating a second Pcmax parameter associated with the second panel of the UE, the differential Pcmax parameter indicating a difference between the first Pcmax parameter and the second Pcmax parameter, and wherein the power control operation is also performed based on the first Pcmax parameter and the differential Pcmax parameter.

24. The method of claim 23, wherein the first Pcmax parameter is indicated via the report message using 6 bits, and wherein the differential Pcmax parameter is indicated via the report message using 2 bits.

25. The method of claim 15, wherein The first transmit power control parameter comprises a first Pcmax parameter; and The second transmit power control parameter includes a second Pcmax parameter.

26. The method of claim 23, wherein the first Pcmax parameter is indicated via the report message using 6 bits, and wherein the differential Pcmax parameter is indicated via the report message using 4 bits.

27. The method of claim 15, wherein the report message comprises a medium access control (MAC) control element (MAC-CE).

28. The method of claim 15, wherein the first transmit power control parameter and the second transmit power control parameter are used to configure transmit power for transmission of a physical uplink shared channel (PUSCH), a physical uplink control channel (PUCCH), or a sounding reference signal (SRS).

29. An apparatus for wireless communication by a user equipment (UE), comprising: A processing system configured to: determining a first transmit power control parameter associated with a first panel of the UE and a differential transmit power control parameter indicating a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; as well as generating a report message indicating the first transmit power control parameter and the differential transmit power control parameter; and a transmitter configured to send the report message to a base station, The first transmit power control parameter is indicated via the report message using a larger number of bits than the differential transmit power control parameter.

30. An apparatus for wireless communication by a base station, comprising: a receiver configured to receive a report message including a first transmit power control parameter and a differential transmit power control parameter, wherein the first transmit power control parameter is associated with a first panel of a user equipment (UE), the differential transmit power control parameter indicates a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; and A processing system configured to calculating the second transmit power control parameter based on the first transmit power control parameter and the differential transmit power control parameter; and performing a power control operation based on the first transmit power control parameter and the second transmit power control parameter, The first transmit power control parameter is indicated via the report message using a larger number of bits than the differential transmit power control parameter.

31. An apparatus for wireless communication by a user equipment (UE), comprising: means for determining a first transmit power control parameter associated with a first panel of the UE and a differential transmit power control parameter indicative of a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicative of a difference between the first transmit power control parameter and the second transmit power control parameter; means for generating a report message indicating the first transmit power control parameter and the differential transmit power control parameter; and means for sending the report message to a base station, The first transmit power control parameter is indicated via the report message using a larger number of bits than the differential transmit power control parameter.

32. An apparatus for wireless communication by a base station, comprising: means for receiving a report message comprising a first transmit power control parameter and a differential transmit power control parameter, wherein the first transmit power control parameter is associated with a first panel of a user equipment (UE) and the differential transmit power control parameter indicates a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; means for calculating the second transmit power control parameter based on the first transmit power control parameter and the differential transmit power control parameter; and means for performing a power control operation based on the first transmit power control parameter and the second transmit power control parameter, The first transmit power control parameter is indicated via the report message using a larger number of bits than the differential transmit power control parameter.

33. A computer readable medium having instructions stored thereon to cause a user equipment (UE) to perform the following operations: determining a first transmit power control parameter associated with a first panel of the UE and a differential transmit power control parameter indicating a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; generating a report message indicating the first transmit power control parameter and the differential transmit power control parameter; as well as sending the report message to a base station, The first transmit power control parameter is indicated via the report message using a larger number of bits than the differential transmit power control parameter.

34. A computer readable medium having stored thereon instructions for causing a base station to: receiving a report message including a first transmit power control parameter and a differential transmit power control parameter, wherein the first transmit power control parameter is associated with a first panel of a user equipment (UE), and the differential transmit power control parameter indicates a second transmit power control parameter associated with a second panel of the UE, the differential transmit power control parameter indicating a difference between the first transmit power control parameter and the second transmit power control parameter; calculating the second transmit power control parameter based on the first transmit power control parameter and the differential transmit power control parameter; and performing a power control operation based on the first transmit power control parameter and the second transmit power control parameter, The first transmit power control parameter is indicated via the report message using a larger number of bits than the differential transmit power control parameter.

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