Sounding reference signal (SRS) power control enhancements for multi-panel transmission

Abstract

The present disclosure relates to an enhancement method, particularly for sounding reference signal (SRS) power control for multi-panel transmission. Generally, when performing physical uplink shared channel (PUSCH) transmission simultaneously, two user equipment (UE) antenna panels are required to be used. Different panels may observe different pathloss measurements and / or experience different channel conditions. Thus, power control enhancement techniques are disclosed herein to address per panel power control, including: open loop power control (OLPC) SRS power control enhancement; closed loop power control (CLPC) SRS power control enhancement is carried out; and various MAC CE enhancements for simultaneously updating one or more SRS resource sets. An enhancement method may include receiving, at a UE, a configuration of at least one (and preferably two) SRS resource sets for codebook (and / or non-codebook based) PUSCH transmission (wherein, for example, the SRS resource sets include independently configurable power control parameter sets); and then transmitting the multi-panel transmission to the at least one base station according to the configured SRS resource set.

Description

Technical Field

[0001] This application relates to wireless devices and wireless networks, including devices, circuits, and methods for power control of enhanced probe reference signal (SRS) transmission in multi-panel wireless communication systems. Background Technology

[0002] The use of wireless communication systems is growing rapidly. In recent years, wireless devices, such as smartphones and tablets, have become increasingly sophisticated. In addition to supporting phone calls, many mobile devices now offer access to the internet, email, text messaging, and navigation using the Global Positioning System (GPS), and can operate complex applications that utilize these functionalities. Furthermore, many different wireless communication technologies and standards exist. Some examples of wireless communication standards include GSM, UMTS (e.g., associated with WCDMA or TD-SCDMA air interfaces), LTE, LTE-A Advanced (LTE-A), HSPA, 3GPP2 CDMA2000 (e.g., 1xRTT, 1xEV-DO, HRPD, eHRPD), IEEE 802.11 (WLAN or Wi-Fi), and Bluetooth. TM etc.

[0003] The increasing number of features and functionalities introduced into wireless communication devices has generated a continuous demand for improvements in both wireless communication and the devices themselves. In addition to the aforementioned communication standards, there are wireless communication technologies under development to increase coverage and better serve the intended uses of wireless communication, including fifth-generation (5G) standards and new radio (NR) communication technologies. Therefore, there is a need to improve the areas supporting this development and design.

[0004] In 5G systems, two different transmission schemes are supported for uplink (UL) transmission. One transmission scheme is called "codebook-based" transmission, and the other is called "non-codebook-based" transmission. For codebook-based transmission, a user equipment (UE) (e.g., a mobile phone) can be configured with up to one Sounding Reference Signal (SRS) resource set, which has up to two SRS resources. For non-codebook-based transmission, a UE can be configured with up to one SRS resource set, which has up to four SRS resources. For each SRS resource, the resource mapping mode can be configured via Radio Resource Control (RRC) signaling, including: frequency offset, number of comb teeth and symbols, antenna ports, and time-domain behavior (e.g., periodic, aperiodic, or semi-persistent scheduling (SPS) based transmission). Therefore, different SRS resources can have different configurations. The number of antenna ports configured for the UE can be up to the maximum number of layers the UE can support, reflecting the UE's antenna port capacity.

[0005] Multi-panel UEs can also support so-called simultaneous uplink transmission across multiple panels, or "STxMP". With STxMP, the UE typically uses two antenna panels, each of which may face different observable path losses and / or channel conditions. Therefore, improvements in SRS power control for multi-panel transmission are desired. Summary of the Invention

[0006] According to one or more aspects, a method for power control enhancement for multi-panel user equipment (UE) transmission is disclosed, the method comprising: receiving at the UE a configuration of at least one of the following: a first set of sounding reference signals (SRS) resources for codebook-based Physical Uplink Shared Channel (PUSCH) transmission; and a second set of SRS resources for non-codebook-based PUSCH transmission; and transmitting multi-panel transmission from the UE to at least one base station according to at least one of the first and second SRS resource sets.

[0007] According to some aspects, the method also includes receiving at the UE a configuration for a third SRS resource set for codebook-based PUSCH transmission, wherein a first SRS resource set is mapped to a first antenna panel of the UE, wherein a third SRS resource set is mapped to a second antenna panel of the UE, and wherein multi-panel transmission is performed based on the first SRS resource set and the third SRS resource set.

[0008] According to other aspects, the method also includes receiving at the UE a configuration for a fourth SRS resource set for non-codebook-based PUSCH transmission, wherein the second SRS resource set is mapped to a first antenna panel of the UE, wherein the fourth SRS resource set is mapped to a second antenna panel of the UE, and wherein multi-panel transmission is performed based on the second SRS resource set and the fourth SRS resource set.

[0009] According to some aspects, at least one of the first SRS resource set and the second SRS resource set includes an independently configurable set of power control parameters, such as at least one of the following parameters: α (for partial or full path loss compensation); P0 (target received power at the base station receiver); and pathlossReferenceRS (reference signal for path loss estimation).

[0010] Depending on some aspects, a single power control parameter set (or two power control parameter sets) can be configured for a first SRS resource set (or configured for a second SRS resource set, i.e., in the case of non-codebook-based PUSCH transmission). When two power control parameter sets are configured for the first (or second) SRS resource set, at least one of the following can be individually configured for each power control parameter set in the two power control parameter sets: the α parameter, the P0 parameter, or the pathlossReferenceRS parameter.

[0011] According to other aspects, at least the pathlossReferenceRS parameter can be updated individually via MAC CE for each of the two power control parameter sets configured for the first (or second) SRS resource set. According to such aspects, MAC CE may also include one or more of the following: an indication of the serving cell ID containing the first (or second) SRS resource set; an indication of the bandwidth portion (BWP) containing the first (or second) SRS resource set; or an identifier for the first (or second) SRS resource set.

[0012] According to the aspect where codebook-based multi-panel transmission is performed based on a first SRS resource set and a third SRS resource set, the pathlossReferenceRS parameter can be updated individually via MAC CE for each of the first SRS resource set and / or the third SRS resource set. According to this aspect, MAC CE may also include one or more of the following: an indication of the serving cell ID containing the first SRS resource set or the third SRS resource set; an indication of the BWP containing the first SRS resource set or the third SRS resource set; an identifier for the first SRS resource set; or an identifier for the third SRS resource set.

[0013] Similarly, for non-codebook-based transmission, where multi-panel transmission is performed based on a second SRS resource set and a fourth SRS resource set, the pathlossReferenceRS parameter can be updated individually via the MAC CE for each of the second and / or fourth SRS resource sets. According to this aspect, the MAC CE may also include one or more of the following: an indication of the serving cell ID containing the second or fourth SRS resource set; an indication of the BWP containing the second or fourth SRS resource set; an identifier for the second SRS resource set; or an identifier for the fourth SRS resource set.

[0014] According to other aspects, the first power control parameter set configured for the first (or second) SRS resource set can be configured with a first P0 parameter, and the second power control parameter set configured for the first (or second) SRS resource set can be configured with a second P0 parameter.

[0015] According to other aspects, the first transmission power (T0) can be calculated based on the first power control parameter set of the two power control parameter sets configured for the first (or second) SRS resource set, and the second transmission power (T1) can be calculated based on the second power control parameter set of the two power control parameter sets configured for the first (or second) SRS resource set. The target transmission power for multi-panel transmission according to the first (or second) SRS resource set is configured as one of the following: (a) the maximum value between T0 and T1; or (b) the minimum value between T0 and T1.

[0016] According to other aspects, the target transmission power for multi-panel transmission based on the first or more SRS resources in the first (or second) SRS resource set is configured as T0, while the target transmission power for multi-panel transmission based on the second or more SRS resources in the first (or second) SRS resource set is configured as T1.

[0017] According to one or more other aspects, a method for power control enhancement for multi-panel UE transmission is disclosed, the method comprising: receiving a transmit power control (TPC) command (e.g., in DCI format 2_3) at the UE, the transmit power control (TPC) command containing configuration information for each of: a first antenna panel of the UE; and a second antenna panel of the UE; and transmitting multi-panel transmission from the UE to at least one base station using the first antenna panel and the second antenna panel according to at least a first SRS resource and the TPC command.

[0018] Depending on other aspects, the first SRS resource can be mapped to the UE's first antenna, and the second SRS resource can be mapped to the UE's second antenna panel. Then, the TPC command can be applied to both the first SRS resource and the second SRS resource, that is, to make the TPC command usable with both the UE's first antenna panel and the second antenna panel.

[0019] According to other aspects, the first part of the TPC command (e.g., a single bit, or two or more bits) contains configuration information for a first antenna panel applied to the UE, while the second part of the TPC command (e.g., a single bit, or two or more bits) contains configuration information for a second antenna panel applied to the UE.

[0020] The various methods and techniques outlined in this section can also be executed by a device including: a receiver; a transmitter; and a processor configured to perform any of the various methods and techniques outlined herein. The various methods and techniques outlined in this section can also be stored as instructions on a non-transitory computer-readable medium, wherein, when executed, these instructions cause the various methods and techniques outlined herein to be performed.

[0021] The present invention is intended to provide a brief overview of some of the subjects described in this document. Therefore, it should be understood that the above features are merely illustrative and should not be construed as narrowing the scope or substance of the subjects described herein in any way. Other features, aspects, and advantages of the subjects described herein will become apparent from the following detailed description, drawings, and claims. Attached Figure Description

[0022] A better understanding of the subject matter can be obtained by considering the following detailed description of the various aspects in conjunction with the accompanying drawings:

[0023] Figure 1 An example wireless communication system is illustrated based on some aspects.

[0024] Figure 2 Another example of a wireless communication system based on some aspects is shown.

[0025] Figure 3 Example block diagrams of a UE based on some aspects are shown.

[0026] Figure 4 Example block diagrams of base stations (BS) based on some aspects are shown.

[0027] Figure 5 An exemplary UE configured for multi-panel transmission is illustrated according to some aspects.

[0028] Figure 6AAn exemplary transmission power determined based on some aspects for use with various SRS resources in the SRS resource set is illustrated.

[0029] Figure 6B Various MAC CE enhancements for multi-panel transmit power control are illustrated based on several aspects.

[0030] Figure 7A This is a flowchart detailing a method for implementing enhanced open-loop power control (OLPC) for multi-panel transmission, based on several aspects.

[0031] Figure 7B This is a flowchart illustrating further details of a method for performing enhanced OLPC for multi-panel transmission using MAC CE, based on some aspects.

[0032] Figure 8 This is a flowchart detailing a method for implementing enhanced closed-loop power control (CLPC) for multi-panel transmission.

[0033] Although the features described herein may be influenced by various modifications and alternatives, their specific aspects are shown by way of example in the accompanying drawings and described in detail herein. However, it should be understood that the drawings and their detailed description are not intended to limit one to the specific forms disclosed, but rather to cover all modifications, equivalents, and alternatives falling within the spirit and scope of the subject matter as defined by the appended claims. Detailed Implementation

[0034] In the current version 17 of the 3GPP NR specification, for SRS power control, a power control parameter set can be configured for the SRS resource set. This power control parameter set includes several parameters, such as: α parameters (i.e., parameters used for partial or full path loss compensation); P0 parameters (i.e., the target received power at the base station receiver); and pathlossReferenceRS parameters (i.e., reference signals used for path loss estimation). Furthermore, special transmit power control (TPC) commands for closed-loop power control (CLPC) can be indicated, for example, by DCI format 2_3.

[0035] As further specified in the current version 17 of the 3GPP NR specification, for Physical Uplink Shared Channel (PUSCH) power control, power control parameters can be indicated by the SRS Resource Indicator (SRI) field. In PUSCH power control, one or more "SRI-PUSCH-PowerControl" instances can be configured. Each SRI-PUSCH-PowerControl instance can be mapped to an SRI value. Furthermore, TPC commands for Closed-Loop Power Control (CLPC) can be indicated by DCI formats 0_1, 0_2, and / or 2_2.

[0036] At the RAN1#110 meeting, it was agreed that NR will support simultaneous PUSCH transmission with a single downlink control information (DCI) based transmission and spatial domain multiplexing (SDM). Typically, simultaneous PUSCH transmission requires two antenna panels, and therefore, power control per panel becomes an important consideration in future standard designs.

[0037] Therefore, this application relates to various solutions for SRS power control enhancement for multi-panel transmission, including: open-loop power control (OLPC) SRS power control enhancement; closed-loop power control (CLPC) SRS power control enhancement; and various MAC CE enhancements for simultaneously updating one or more SRS resource sets.

[0038] The following is an additional glossary that may be used in this disclosure.

[0039] Memory media – any device of any type of nontransitory memory device or storage device. The term “memory media” is intended to include mounting media (e.g., CD-ROM, floppy disk, or magnetic tape devices; computer system memory or random access memory, such as DRAM, DDR RAM, SRAM, EDO RAM, Rambus RAM), non-volatile memory (such as Flash), magnetic media (e.g., hard disk drives or optical storage devices; registers or other similar types of memory elements). Memory media may also include other types of nontransitory memory or combinations thereof. Furthermore, memory media may reside in a first computer system executing a program, or may reside in a different second computer system connected to the first computer system via a network (such as the Internet). In the latter example, the second computer system may provide program instructions to the first computer for execution. The term “memory media” may include two or more memory media that may reside in different locations (e.g., in different computer systems connected via a network). Memory media may store program instructions (e.g., representing a computer program) that can be executed by one or more processors.

[0040] Carrier medium – as described above, memory media and physical transmission media, such as buses, networks and / or other physical transmission media for transmitting signals (such as electrical signals, electromagnetic signals or digital signals).

[0041] Programmable hardware elements encompass a variety of hardware devices that include multiple programmable functional blocks connected via programmable interconnects. Examples include FPGAs (Field-Programmable Gate Arrays), PLDs (Programmable Logic Devices), FPOAs (Field-Programmable Object Arrays), and CPLDs (Complex PLDs). The range of programmable functional blocks can vary from fine-grained (combinational logic or lookup tables) to coarse-grained (arithmetic logic units or processor cores). Programmable hardware elements can also be referred to as "configurable logic units."

[0042] User equipment (UE) (also known as “user equipment,” “UE device,” or “terminal”) – any of various types of computer systems or devices that are mobile or portable and perform wireless communications. Examples of UE devices include mobile phones or smartphones (e.g., iPhone). TM Based on Android TM Telephones), portable gaming devices (e.g., Nintendo Switch) TM Nintendo DS TM PlayStation Vita TM PlayStation Portable TM Gameboy Advance TM iPhone TM This includes laptops, wearable devices (e.g., smartwatches, smart glasses), PDAs, portable internet devices, music players, data storage devices, other handheld devices, in-vehicle infotainment (IVI), in-vehicle entertainment (ICE) devices, instrument clusters, head-up displays (HUD) devices, on-board diagnostics (OBD) devices, dashboard moving equipment (DME), mobile data terminals (MDTs), electronic engine management systems (EEMS), electronic / engine control units (ECUs), electronic / engine control modules (ECMs), embedded systems, microcontrollers, control modules, engine management systems (EMS), connected or "smart" appliances, machine-type communication (MTC) devices, machine-to-machine (M2M) and Internet of Things (IoT) devices, etc. Generally speaking, the terms "UE," "UE device," "terminal," or "user equipment" can be broadly defined to encompass any electronic, computing, and / or telecommunications equipment (or combination of devices) that is easily transportable by a user (or vehicle) and capable of wireless communication.

[0043] Wireless device – any of various types of computer systems or devices that perform wireless communication. A wireless device can be portable (or mobile), or it can be stationary or fixed in one location. A UE is an example of a wireless device.

[0044] A communication device is any of various types of computer systems or devices that perform communication, which may be wired or wireless. A communication device may be portable (or mobile), or it may be stationary or fixed in one location. A wireless device is one example of a communication device. A UE is another example of a communication device.

[0045] Base station – The terms “base station,” “wireless base station,” or “wireless station” have the full range of their common meanings and include at least a wireless communication station installed in a fixed location and used for communication as part of a wireless telephone system or radio system. For example, if a base station is implemented in an LTE environment, it may alternatively be referred to as an “eNodeB” or “eNB.” If a base station is implemented in a 5G NR environment, it may alternatively be referred to as a “gNodeB” or “gNB.” Although certain aspects are described in the context of LTE or 5G NR, references to “eNB,” “gNB,” “nodeB,” “base station,” and “NB,” etc., may also refer to one or more wireless nodes serving a cell to provide wireless connectivity between user equipment and a generally wider network, and the concepts discussed are not limited to any particular wireless technology. Although certain aspects are described in the context of LTE or 5G NR, references to “eNB,” “gNB,” “nodeB,” “base station,” and “NB,” etc., are not intended to limit the concepts discussed herein to any particular wireless technology, and the concepts discussed can be applied to any wireless system.

[0046] Node - As used herein, the term "node" or "wireless node" can refer to one or more devices associated with a cell that provides a wireless connection between a user equipment and a typically wired network.

[0047] A processing element (or processor) is a component or combination of components capable of performing the functions of a device, such as a user equipment or cellular network device. A processing element may include, for example, a processor and associated memory, portions or circuitry of individual processor cores, an entire processor core, a single processor, a processor array, circuitry (such as an application-specific integrated circuit (ASIC)), programmable hardware components (such as a field-programmable gate array (FPGA)), and any combination thereof.

[0048] A channel is a medium used to transmit information from a transmitter to a receiver. It should be noted that because the characteristics of the term "channel" can vary depending on different wireless protocols, the term "channel" as used herein can be considered to be used in a standard manner consistent with the type of device to which the term is referenced. In some standards, the channel width can be variable (e.g., depending on device capabilities and band conditions). For example, LTE can support scalable channel bandwidths from 1.4 MHz to 20 MHz. WLAN channels can be 22 MHz wide, while Bluetooth channels can be 1 MHz wide. Other protocols and standards may include different definitions of channels. Furthermore, some standards may define and use multiple types of channels (e.g., different channels for uplink or downlink and / or different channels for different purposes (such as data and control information)).

[0049] Frequency band – The term “frequency band” has the full range of its general meaning and includes at least a segment of spectrum (e.g., radio frequency spectrum) in which a channel is used or reserved for the same purpose.

[0050] "Configured as" – Various components can be described as being "configured as" to perform one or more tasks. In this context, "configured as" is a broad expression generally meaning "having a structure" that performs one or more tasks during operation. Thus, a component can be configured to perform a task even when it is not currently performing one (e.g., a set of electrical conductors can be configured to electrically connect one module to another, even when the two modules are not connected). In some contexts, "configured as" can be a broad expression generally meaning "having a circuit" that performs one or more tasks during operation. Thus, a component can be configured to perform a task even when it is not currently powered on. Generally speaking, the circuit forming the structure corresponding to "configured as" can include hardware circuitry.

[0051] For ease of description, various components may be described as performing one or more tasks. Such descriptions should be interpreted as including the phrase "configured to". Statements describing a component as configured to perform one or more tasks are explicitly intended not to invoke the interpretation of 35 U.S.SC §112(f) for that component.

[0052] Example wireless communication system

[0053] Now go to Figure 1 This illustrates a simplified example of a wireless communication system based on some aspects. It should be noted that... Figure 1 The system described herein is merely a non-limiting example of possible systems, and the features of this disclosure can be implemented in any of various systems as needed.

[0054] As shown in the figure, the example wireless communication system includes a base station 102A, which communicates with one or more user equipments 106A, 106B to 106N via a transmission medium. Each user equipment may be referred to herein as a "user equipment" (UE). Therefore, user equipment 106 is referred to as a UE or UE device.

[0055] Base station (BS) 102A may be a transceiver base station (BTS) or a cell site (e.g., a “cellular base station”), and may include hardware that enables wireless communication with UEs 106A to 106N.

[0056] The communication area (or coverage area) of a base station can be referred to as a "cell". Base station 102A and UE 106 can be configured to communicate via a transmission medium using any of a variety of Radio Access Technologies (RATs), also known as wireless communication technologies or telecommunications standards, such as GSM, UMTS (associated with air interfaces such as WCDMA or TD-SCDMA), LTE, LTE-A, 5G NR, HSPA, and 3GPP2 CDMA2000. Note that if base station 102A is implemented in an LTE environment, it can alternatively be referred to as an "eNodeB" or "eNB". Note that if base station 102A is implemented in a 5G NR environment, it can alternatively be referred to as a "gNodeB" or "gNB".

[0057] In some aspects, UE 106 can be an IoT UE, which may include a network access layer designed to utilize low-power IoT applications with short-lived UE connections. The IoT UE may utilize technologies such as M2M or MTC to exchange data with an MTC server or device via a Public Land Mobile Network (PLMN), Proximity Service (ProSe), or Device-to-Device (D2D) communication, sensor network, or IoT network. M2M or MTC data exchange may be machine-initiated data exchange. The IoT network describes interconnected IoT UEs, which may include uniquely identifiable embedded computing devices (within the Internet infrastructure) with short-lived connections. As an example, Vehicle-to-Everything (V2X) communication may utilize ProSe features using the SL interface to communicate directly between devices. The IoT UE may also perform background applications (e.g., keeping track of activity messages, status updates, etc.) to facilitate connectivity within the IoT network.

[0058] As shown in the figure, UE 106 (such as UE 106A and UE 106B) can directly exchange communication data via SL interface 108. SL interface 108 can be a PC5 interface, which includes one or more physical channels, including but not limited to the Physical Side Link Shared Channel (PSSCH), Physical Side Link Control Channel (PSCCH), Physical Side Link Broadcast Channel (PSBCH), and Physical Side Link Feedback Channel (PSFCH).

[0059] In a V2X scenario, one or more base stations in base station 102 may be roadside units (RSUs) or act as RSUs. The term RSU can refer to any transport infrastructure entity used for V2X communication. An RSU may be implemented in or by a suitable radio node or a stationary (or relatively stationary) UE, wherein an RSU implemented in or by a UE may be referred to as a "UE-type RSU," an RSU implemented in or by an eNB may be referred to as an "eNB-type RSU," an RSU implemented in or by a gNB may be referred to as a "gNB-type RSU," and so on. In one example, an RSU is a computing device coupled to radio frequency circuitry located on the roadside that provides connectivity support to passing vehicle UEs (vUEs). An RSU may also include internal data storage circuitry for storing intersection map geometry, traffic statistics, media, and applications / software for sensing and controlling ongoing vehicle and pedestrian traffic. The RSU can operate on the 5.9 GHz Intelligent Transportation Systems (ITS) band to provide extremely low-latency communications required for high-speed events, such as collision avoidance and traffic warnings. Alternatively, the RSU can operate on the cellular V2X band to provide the aforementioned low-latency communications as well as other cellular communication services. Alternatively, the RSU can operate as a Wi-Fi hotspot (2.4 GHz band) and / or provide connectivity to one or more cellular networks to provide uplink and downlink communications. Some or all of the radio frequency circuitry in the computing device and the RSU can be encapsulated in a weather enclosure suitable for outdoor installation, and this enclosure may include a network interface controller to provide wired connections (e.g., Ethernet) to traffic signal controllers and / or backhaul networks.

[0060] As shown in the figure, base station 102A can also be configured to communicate with network 100 (e.g., the core network of a cellular service provider, telecommunications networks such as the Public Switched Telephone Network (PSTN) and / or the Internet, and various other possibilities). Therefore, base station 102A can facilitate communication between user equipments and / or between user equipments and network 100. Specifically, cellular base station 102A can provide UE 106 with various telecommunications capabilities such as voice, SMS, and / or data services.

[0061] Base station 102A and other similar base stations (such as base stations 102B to 102N) operating according to the same or different cellular communication standards can therefore be provided as a network of cells that can provide continuous or nearly continuous overlapping services to UEs 106A to 106N and similar devices over a geographical area via one or more cellular communication standards.

[0062] Therefore, although base station 102A can act as such Figure 1 The illustrated "serving cells" are UEs 106A to 106N, but each UE 106 may also be able to receive signals (and possibly within its communication range) from one or more other cells (which may be provided by base stations 102B to 102N and / or any other base stations), which may be referred to as "neighboring cells." Such cells may also facilitate communication between user equipments and / or between user equipments and network 100. Such cells can include "macro" cells, "micro" cells, "pecimen" cells, and / or any other cells of various other granularities providing service area size. For example, in Figure 1 Base stations 102A and 102B illustrated can be macro cells, while base station 102N can be a micro cell. Other configurations are also possible.

[0063] In some respects, base station 102A may be a next-generation base station (e.g., a 5G New Radio (5G NR) base station or "gNB"). In some respects, the gNB may connect to a legacy evolved packet core (EPC) network and / or to an NR core (NRC) / 5G core (5GC) network. Furthermore, the gNB cell may include one or more transition and receive points (TRPs). In addition, a UE capable of operating according to 5G NR may be connected to one or more TRPs within one or more gNBs. For example, base station 102A and one or more other base stations 102 may support joint transmission, enabling UE 106 to receive transmissions from multiple base stations (and / or multiple TRPs provided by the same base station). For example, as... Figure 1 As illustrated, both base station 102A and base station 102C are shown as serving UE 106A.

[0064] It should be noted that UE 106 may be able to communicate using multiple wireless communication standards. For example, in addition to at least one of the cellular communication protocols discussed in the definition above, UE 106 may also be configured to communicate using wireless networking (e.g., Wi-Fi) and / or peer-to-peer wireless communication protocols (e.g., Bluetooth and Wi-Fi pairs, etc.). If desired, UE 106 may additionally or alternatively be configured to communicate using one or more Global Navigation Satellite Systems (GNSS) (e.g., GPS or GLONASS), one or more mobile television broadcasting standards (e.g., ATSC-M / H), and / or any other wireless communication protocol. Other combinations of wireless communication standards (including more than two wireless communication standards) are also possible.

[0065] like Figure 2 As illustrated, in one or more embodiments, UE 106 can be a cellular communication-enabled device, such as a mobile phone, handheld device, computer, laptop, tablet, smartwatch or other wearable device or virtually any type of wireless device.

[0066] UE 106 may include a processor (processing element) configured to execute program instructions stored in memory. UE 106 may perform any aspect of the method described herein by executing such stored instructions. Alternatively or in addition, UE 106 may include any of the following programmable hardware elements: an FPGA (Field Programmable Gate Array), an integrated circuit, and / or various other possible hardware components configured to perform (e.g., individually or in combination) any aspect of the method described herein or any part of any aspect of the method described herein.

[0067] UE 106 may include one or more antennas for communicating using one or more wireless communication protocols or technologies. In some aspects, UE 106 may be configured to communicate, for example, using NR or LTE with at least some shared radio components. As an additional possibility, UE 106 may be configured to communicate using CDMA2000 (1xRTT / 1xEV-DO / HRPD / eHRPD) or LTE with a single shared radio component and / or GSM or LTE with a single shared radio component. The shared radio component may be coupled to a single antenna or may be coupled to multiple antennas (e.g., for a multiple-input multiple-output (MIMO) configuration) for performing wireless communication. Generally, the radio component may include any combination of baseband processors, analog RF signal processing circuitry (e.g., including filters, mixers, oscillators, and amplifiers) or digital processing circuitry (e.g., for digital modulation and other digital processing). Similarly, the radio component may use the aforementioned hardware to implement one or more receive chains and transmit chains. For example, UE 106 can share one or more portions of the receive chain and / or transmit chain among various wireless communication technologies (such as those discussed above).

[0068] In some aspects, UE 106 may include separate transmit and / or receive chains (e.g., including separate antennas and other radio components) for each wireless communication protocol configured to communicate therein. As another possibility, UE 106 may include one or more radio components shared among multiple wireless communication protocols, as well as one or more radio components uniquely used by a single wireless communication protocol. For example, UE 106 may include shared radio components for communicating using either LTE or 5G NR (or either LTE or 1xRTT, or either LTE or GSM, and various other possibilities), and separate radio components for communicating using each of Wi-Fi and Bluetooth. Other configurations are also possible.

[0069] In some respects, the downlink resource grid can be used for downlink transmission from any base station in base station 102 to UE 106, while uplink transmission can utilize similar techniques. This grid can be a time-frequency grid, referred to as a resource grid or time-frequency resource grid, which represents the physical resources in the downlink within each time slot. Such time-frequency representations are standard practice for Orthogonal Frequency Division Multiplexing (OFDM) systems, making radio resource selection intuitive. Each column and row of the resource grid corresponds to an OFDM symbol and an OFDM subcarrier, respectively. The duration of the resource grid in the time domain corresponds to a time slot in a radio frame. The smallest time-frequency unit in the resource grid is represented as a resource element. Each resource grid can include multiple resource blocks that describe the mapping from a specific physical channel to resource elements. Each resource block comprises a set of resource elements. Such resource blocks are used to transmit several different physical downlink channels.

[0070] The Physical Downlink Shared Channel (PDSCH) carries user data and higher-layer signaling to UE 106. The Physical Downlink Control Channel (PDCCH) carries information such as transmission format and resource allocation related to the PDSCH channel. It can also inform UE 106 of transmission format, resource allocation, and HARQ (Hybrid Automatic Repeat Request) information related to the uplink shared channel. Typically, downlink scheduling (assigning control and shared channel resource blocks to UE 102 within the cell) can be performed at any base station in base station 102 based on channel quality information fed back from any UE in UE 106. Downlink resource assignment information can be transmitted on the PDCCH used for (e.g., assigned to) each UE in the UE.

[0071] The PDCCH can use Control Channel Elements (CCEs) to transmit control information. Before being mapped to resource elements, the complex-valued symbols of the PDCCH can first be organized into quadruplets, which can then be arranged using a sub-block interleaver for rate matching. Each PDCCH can be transmitted using one or more of these CCEs, where each CCE can correspond to a set of four physical resource elements (REGs) of nine. Four Quadrature Phase Shift Keying (QPSK) symbols can be mapped to each REG. Depending on the size of the Downlink Control Information (DCI) and channel conditions, one or more CCEs can be used to transmit the PDCCH. There may be four or more different PDCCH formats defined in LTE with different numbers of CCEs (e.g., aggregation levels, L = 1, 2, 4, or 8).

[0072] Example communication device

[0073] Figure 3A simplified block diagram illustrating a communication device 106 according to some aspects is shown. Note that... Figure 3 The block diagram of the communication device is only one example of a possible communication device. Depending on the aspects, among other devices, communication device 106 may be a UE device or terminal, a mobile device or mobile station, a wireless device or wireless station, a desktop computer or computing device, a mobile computing device (e.g., a laptop, notebook, or portable computing device), a tablet computer, and / or a combination of devices. As shown, communication device 106 may include a collection of components configured to perform core functions. For example, this collection of components may be implemented as a system-on-a-chip (SOC), which may include portions for various purposes. Alternatively, this collection of components may be implemented as individual components or groups of components for various purposes. The collection of components 200 may be (e.g., communicatively; directly or indirectly) coupled to various other circuitry of communication device 106.

[0074] For example, communication device 106 may include various types of memory (e.g., including NAND flash memory 310), input / output interfaces such as connector I / F 320 (e.g., for connection to a computer system; docking station; charging station; input devices such as microphone, camera, keyboard; output devices such as speaker; etc.), a display 360 that may be integrated with or external to communication device 106, and wireless communication circuitry 330 (e.g., for LTE, LTE-A, NR, UMTS, GSM, CDMA2000, Bluetooth, Wi-Fi, NFC, GPS, etc.). In some aspects, communication device 106 may include wired communication circuitry (not shown), such as a network interface card (e.g., for Ethernet connectivity).

[0075] Wireless communication circuitry 330 may be (e.g., communicatively; directly or indirectly) coupled to one or more antennas, such as antenna 335 (each of these antennas may include an antenna panel), as shown. Wireless communication circuitry 230 may include cellular communication circuitry and / or medium-to-short-range wireless communication circuitry, and may include multiple receive chains and / or multiple transmit chains for receiving and / or transmitting multiple spatial streams, such as in a MIMO configuration.

[0076] In some aspects, as further described below, the cellular communication circuit 330 may include one or more receive chains (including and / or coupled to (e.g., communicatively; directly or indirectly) dedicated processors and / or radio components) for multiple radio access technologies (RATs) (e.g., a first receive chain for LTE and a second receive chain for 5G NR). In addition, in some aspects, the cellular communication circuit 330 may include a single transmit chain that can be switched between radio components dedicated to a particular RAT. For example, a first radio component may be dedicated to a first RAT (e.g., LTE) and may communicate with a dedicated receive chain and a transmit chain shared with a second radio component. A second radio component may be dedicated to a second RAT (e.g., 5G NR) and may communicate with a dedicated receive chain and a shared transmit chain. In some aspects, the second RAT is capable of operating at millimeter-wave frequencies. Because millimeter-wave systems operate at frequencies higher than those typically found in LTE systems, signals in the millimeter-wave frequency range are significantly attenuated due to environmental factors. To help address this attenuation problem, millimeter-wave systems typically utilize beamforming and include more antennas compared to LTE systems. These antennas can be organized into antenna arrays or panels consisting of individual antenna elements. These antenna arrays can be coupled to a radio link.

[0077] The communication device 106 may also include one or more user interface elements and / or be configured for use with one or more user interface elements.

[0078] The communication device 106 may also include one or more smart cards 345 (such as one or more Universal Integrated Circuit Cards (UICCs) 345), which include subscriber identity module (SIM) functionality.

[0079] As shown in the figure, the SOC 300 may include a processor 302 and a display circuit 304. The processor can execute program instructions for the communication device 106, and the display circuit can perform graphics processing and provide display signals to the display 360. The processor 302 may also be coupled to a memory management unit (MMU) 340, which can be configured to receive addresses from the processor 302 and translate these addresses into locations in memory (e.g., memory 306, read-only memory (ROM) 350, NAND flash memory 310); and / or coupled to other circuitry or devices, such as the display circuit 304, wireless communication circuitry 330, connector I / F 320, and / or display 360. The MMU 340 may be configured to perform memory protection and page table translation or setup. In some aspects, the MMU 340 may be included as part of the processor 302.

[0080] As mentioned above, communication device 106 can be configured to communicate using wireless and / or wired communication circuitry. As described herein, communication device 106 may include hardware and software components for implementing any of the various features and techniques described herein. Processor 302 of communication device 106 can be configured to implement some or all of the features described herein (e.g., by executing program instructions stored on a memory medium). Alternatively (or in addition), processor 302 can be configured as a programmable hardware element, such as a field-programmable gate array (FPGA) or as an application-specific integrated circuit (ASIC). Alternatively (or in addition), in conjunction with one or more of other components 300, 304, 306, 310, 320, 330, 340, 345, 350, 360, processor 302 of communication device 106 can be configured to implement some or all of the features described herein.

[0081] In addition, as described herein, processor 302 may include one or more processing elements. Therefore, processor 302 may include one or more integrated circuits (ICs) configured to perform the functions of processor 302. Furthermore, each integrated circuit may include circuitry (e.g., a first circuit and a second circuit, etc.) configured to perform the functions of processor 302.

[0082] Furthermore, as described herein, the wireless communication circuit 330 may include one or more processing elements. In other words, one or more processing elements may be included in the wireless communication circuit 330. Therefore, the wireless communication circuit 330 may include one or more integrated circuits (ICs) configured to perform the functions of the wireless communication circuit 330. Additionally, each integrated circuit may include circuitry (e.g., a first circuit and a second circuit, etc.) configured to perform the functions of the wireless communication circuit 330.

[0083] Example base station

[0084] Figure 4 An example block diagram of base station 102 is shown, illustrating some aspects. It should be noted that... Figure 4 The base station shown is a non-limiting example of a possible base station. As shown, base station 102 may include processor 304, which can execute program instructions for base station 102. Processor 404 may also be coupled to memory management unit (MMU) 440, which may be configured to receive addresses from processor 404 and translate these addresses into locations in memory (e.g., memory 460 and read-only memory (ROM) 450); or coupled to other circuitry or devices.

[0085] Base station 102 may include at least one network port 470. Network port 470 may be configured to be coupled to a telephone network and provide access rights as described above. Figure 1 The telephone network described herein includes multiple devices (such as UE device 106).

[0086] Network port 470 (or an additional network port) may also be configured, or alternatively configured, to be coupled to a cellular network, such as the core network of a cellular service provider. The core network may provide mobility-related services and / or other services to multiple devices, such as UE device 106. In some cases, network port 470 may be coupled to a telephone network via the core network, and / or the core network may provide the telephone network (e.g., in addition to other UE devices served by the cellular service provider).

[0087] In some respects, base station 102 may be a next-generation base station (e.g., a 5G New Radio (5G NR) base station or a “gNB”). In such respects, base station 102 may connect to a legacy evolved packet core (EPC) network and / or to an NR core (NRC) / 5G core (5GC) network. Furthermore, base station 102 may be considered a 5G NR cell and may include one or more transition and receive points (TRPs). Additionally, UEs capable of operating according to 5G NR may be connected to one or more TRPs within one or more gNBs.

[0088] Base station 102 may include at least one antenna 434, and may include multiple antennas or antenna panels. At least one antenna 434 may be configured to operate as a wireless transceiver and may also be configured to communicate with UE device 106 via radio component 430. Antenna 434 communicates with radio component 430 via communication link 432. Communication link 432 may be a receive link, a transmit link, or both. Radio component 430 may be configured to communicate via various wireless communication standards, including 5G NR, LTE, LTE-A, GSM, UMTS, CDMA2000, and Wi-Fi.

[0089] Base station 102 can be configured to perform wireless communication using multiple wireless communication standards. In some instances, base station 102 may include multiple radio components that enable base station 102 to communicate according to multiple wireless communication technologies. For example, as one possibility, base station 102 may include an LTE radio component for performing communication according to LTE and a 5G NR radio component for performing communication according to 5G NR. In this case, base station 102 may be able to operate as both an LTE base station and a 5G NR base station. When base station 102 supports millimeter wave, the 5G NR radio component may be coupled to one or more millimeter wave antenna arrays or panels. As another possibility, base station 102 may include a multimode radio component capable of performing communication according to any of the multiple wireless communication technologies (e.g., 5G NR and LTE, 5G NR and Wi-Fi, LTE and Wi-Fi, LTE and UMTS, LTE and CDMA2000, UMTS and GSM, etc.).

[0090] Furthermore, BS102 may include hardware and software components for implementing or supporting specific implementations of the features described herein. The processor 404 of base station 102 may be configured to implement or support specific implementations of some or all of the methods described herein (e.g., by executing program instructions stored on a memory medium). Alternatively, processor 404 may be configured as a programmable hardware element, such as a field-programmable gate array (FPGA), or as an application-specific integrated circuit (ASIC) or a combination thereof. Alternatively (or otherwise), in conjunction with one or more of other components 430, 432, 434, 440, 450, 460, 470, the processor 404 of BS102 may be configured to implement or support the implementation of some or all of the features described herein.

[0091] In addition, as described herein, processor 404 may include one or more processing elements. Therefore, processor 404 may include one or more integrated circuits (ICs) configured to perform the functions of processor 404. Furthermore, each integrated circuit may include circuitry (e.g., a first circuit and a second circuit, etc.) configured to perform the functions of processor 404.

[0092] Furthermore, as described herein, radio component 430 may include one or more processing elements. Therefore, radio component 430 may include one or more integrated circuits (ICs) configured to perform the functions of radio component 430. In addition, each integrated circuit may include circuitry (e.g., a first circuit and a second circuit, etc.) configured to perform the functions of radio component 430.

[0093] Multi-panel user equipment (UE) communication

[0094] Now go to Figure 5 Example 500 of a UE 505 configured for multi-panel transmission is shown, based on several aspects. Figure 5 In system 500, two antenna panels 5101 and 5102 are included on UE 505. Figure 5 The diagram illustrates a Multiple Transmitter Receiver Point (mTRP) operation involving two TRPs (i.e., TRP#1502A and TRP#2502B) configured to communicate with UE 505. Solid lines indicate the uplink (UL) through which one or more SRS signals (5151 / 5152) can be transmitted to each TRP (e.g., after establishing STxMP communication via RRC configuration), while dashed lines indicate the downlink (DL) through which UE 505 can receive SRS resource set configurations, for example, via RRC configuration.

[0095] Open-loop power control (OLPC) SRS power control enhancement

[0096] In traditional OLPC, there is no feedback from the UE to the base station or from the base station to the UE. For example, the base station can send the target received power (i.e., P0) at the gNB to the UE. The UE receives the target power and adjusts its transmit power accordingly based on this parameter and other path loss measurements and / or channel conditions. As mentioned above, different panels on the UE can observe different path loss measurements and / or experience different channel conditions. Therefore, power control enhancement techniques are needed for multi-panel SRS transmission.

[0097] According to some aspects, for multi-panel SRS transmission and for codebook-based PUSCH transmission, two SRS resource sets are configured for use as "codebooks". Similarly, for non-codebook-based PUSCH transmission, two SRS resource sets are configured for use as "non-codebooks". According to these aspects, each SRS resource set can be mapped to a different antenna panel. Moreover, each SRS resource set can be independently configured with a different set of power control parameters, including at least one of the following parameters: α parameter (for partial or full path loss compensation); P0 parameter (i.e., the target received power at the base station receiver); and pathlossReferenceRS parameter (a reference signal for path loss estimation).

[0098] Depending on other aspects, for multi-panel SRS transmission and for codebook-based PUSCH transmission, a single SRS resource set can be configured for use as a "codebook". Similarly, for non-codebook-based PUSCH transmission, a single SRS resource set can be configured for use as a "non-codebook". In the case of configuring only a single SRS resource set, there can be a single power control parameter set configured for the single SRS resource set, or there can be at least two power control parameter sets configured for the single SRS resource set (e.g., different parameter sets). In such cases, additional (e.g., different) parameters for the second power control parameter set can be pathlossReferenceRS parameters (and, if necessary, different α and / or P0 parameter values).

[0099] The following shows a sample SRS resource set definition with multiple power control parameter sets:

[0100]

[0101] In cases where multiple power control parameter sets are configured for a single SRS resource set (for "codebook" or "non-codebook"), depending on some aspects, a first power control parameter set (e.g., α, p0, pathlossReferenceRS, as shown in the example above) can be used to determine a first transmit power T0, while a second power control parameter set (e.g., α2, p02, pathlossReferenceRS2, as shown in the example above) can be used to determine a different second transmit power T1.

[0102] Depending on some of these aspects, a single transmit power can then be used for all SRS resources in the SRS resource set (e.g., T0, T1, max(T0,T1), min(T0,T1), mean(T0,T1), etc.). For example, in some cases, using the maximum value of T0 and T1 may be preferred, allowing both panels to achieve their objectives; however, this may also cause the UE to consume more power than if the minimum value of T0 and T1 were selected.

[0103] Depending on other aspects, the first transmission power T0 can be used for some SRS resources in the SRS resource set, and the second transmission power T1 can be used for other SRS resources in the SRS resource set.

[0104] Figure 6AThis scenario illustrates a scenario where the exemplary determined transmit power T0 (6040) is used with SRS resources 6020 and 6021 in SRS resource set 600, and the exemplary determined transmit power T1 (6041) is used with SRS resources 6022 and 6023 in SRS resource set 600.

[0105] As another example of how a defined transmission power (e.g., T0 / T1) can be assigned to various SRS resources in an SRS resource set, two lists of SRS resource IDs can be configured within the SRS resource set, with SRS resources in the first list of SRS resource IDs using the T0 transmission power and SRS resources in the second list of SRS resource IDs using the T1 transmission power.

[0106] As another example, a list of one or more pairs of SRS resources can be configured within the SRS resource set, with the first SRS resource in each pair using T0 transmit power and the second SRS resource in each pair using T1 transmit power. Further variations and assignments of the determined transmit power to the SRS resources within the SRS resource set are also possible based on the needs of a given specific implementation.

[0107] MAC CE Enhancement for SRS Power Control

[0108] Returning to the example described above, where a single SRS resource set (“codebook” or “non-codebook”) is configured for multi-panel SRS transmission, and two different sets of power control parameters are configured for the same SRS resource set, MAC CE can be used, in some respects, as a method to update the SRS resource set using two different pathlossReferenceRS IDs.

[0109] Now go to Figure 6B An exemplary MAC CE 620 is illustrated, which can be used to update a first SRS resource set using two different pathlossReferenceRS IDs. The exemplary MAC CE 620 may include fields for: an indication (622) of the serving cell ID containing the first SRS resource set; an indication (624) of the bandwidth portion (BWP) containing the first SRS resource set; and an identifier (626) for the first SRS resource set. The exemplary MAC CE 620 may also include fields for an ID (6281) for the first path loss reference RS and an ID (6282) for the second path loss reference RS. The MAC CE 620 may also include one or more reserved bits R (6301) that may be reserved for future use (and / or octet alignment of the MAC-CE payload) and set to 0.

[0110] Now returning to the example described above, where for multi-panel SRS transmission, when two SRS resource sets (“codebook” or “non-codebook”) are configured and each SRS resource set is mapped to a different antenna panel of the UE, MACCE can be used as a method to update the two SRS resource sets simultaneously, depending on some aspects.

[0111] Return now Figure 6B Another exemplary MAC CE 640 is illustrated, which can be used to update a first SRS resource set and a second SRS resource set using two different pathlossReferenceRS IDs. The exemplary MAC CE 640 may include fields for: an indication (622) of the serving cell ID containing the active SRS resource set; an indication (624) of the bandwidth portion (BWP) containing the active SRS resource set; and identifiers for the first SRS resource set (6261) and the second SRS resource set (6262). The exemplary MAC CE 640 may also include fields for the ID (6281) of the first path loss reference RS for the first SRS resource set and the ID (6282) of the second path loss reference RS for the second SRS resource set. The MAC CE 640 may also include one or more reserved bits R (6302) that may be reserved for future use (and / or octet alignment of the MAC-CE payload) and set to 0.

[0112] As can now be understood, using a single MACCE, such as 640, that can simultaneously update parameters for two different SRS resource sets can be more efficient than sending two different MACCEs (such as those shown in Example 620) to achieve the same update for multiple SRS resource sets.

[0113] Closed-loop power control (CLPC) SRS power control enhancement

[0114] Closed-loop power control is a mechanism that allows the UE to control the power of the PUSCH (or PUCCH or SRS) channel while communicating with the base station (i.e., connecting). For example, the base station can instruct the UE how much its transmit power should be reduced or increased using TPC commands (e.g., for DCI format 2_3). For instance, a "cumulative" TPC mode can be used, where the UE uses memory to keep track of its previous power state and then increases (or decreases) its power state based on the latest value received in the TPC command. As another example, an "absolute" TPC mode can be used, where the UE is provided with the total power value to utilize (without needing to recall or modify previously stored power states).

[0115] Based on some aspects disclosed herein, TPC commands can also be applied to multi-panel transmission scenarios. For the first option, TPC commands received in DCI format 2_3 can be applied to both the SRS resources mapped to the UE's first antenna panel and the SRS resources mapped to the UE's second antenna panel (regardless of whether the SRS resources are part of the same SRS resource set or different SRS resource sets). As a second option, the TPC command can be split into two parts: the first part of the TPC command contains configuration information applied to the UE's first antenna panel, and the second part of the TPC command contains configuration information applied to the UE's second antenna panel. For example, in a 2-bit TPC command (where in conventional single-panel transmission, "00" can indicate a 1dB reduction in transmit power, "01" can indicate maintaining the same transmit power level, "10" can indicate a 1dB increase in transmit power, and "11" can indicate a 3dB increase in transmit power), the first bit can alternatively be applied to the SRS resources mapped to the first antenna panel of the UE (where, for example, a first bit value "0" can indicate a reduction in transmit power for the first antenna panel, and a first bit value "1" can indicate an increase in transmit power for the first antenna panel), and the second bit can be applied to the SRS resources mapped to the second antenna panel of the UE (where, for example, a second bit value "0" can indicate a reduction in transmit power for the second antenna panel, and a second bit value "1" can indicate an increase in transmit power for the second antenna panel). If no change in transmit power is required during a given time interval, the base station can simply choose not to transmit the bits for the corresponding antenna panel.

[0116] As another example, an additional 2-bit TPC command can be introduced, whereby the existing 2-bit TPC command can be applied to the SRS resources mapped to the first panel of the UE, and the additional 2-bit TPC can be applied to the SRS resources mapped to the second panel of the UE. Depending on the needs of a given specific implementation, other methods of decoding the TPC information of the various panels of the UE used for multi-panel transmission (e.g., using more than 2 bits, or applying it to more than 2 panels, etc.) are also possible.

[0117] Exemplary methods

[0118] Now go to Figure 7AAccording to several aspects, a flowchart detailing a method 700 for performing enhanced open-loop power control (OLPC) for multi-panel transmission is shown. First, at block 702, method 700 may receive at the UE a configuration of at least one of the following: (1) a first set of sounding reference signals (SRS) resources for codebook-based Physical Uplink Shared Channel (PUSCH) transmission; and (2) a second set of SRS resources for codebook-based PUSCH transmission. Next, at block 704, method 700 may optionally receive at the UE a configuration of a third set of SRS resources for codebook-based PUSCH transmission, wherein the first set of SRS resources is mapped to a first antenna panel of the UE, and wherein the third set of SRS resources is mapped to a second antenna panel of the UE.

[0119] At block 706, method 700 may optionally receive at the UE a configuration for a fourth SRS resource set for non-codebook-based PUSCH transmission, wherein the second SRS resource set is mapped to the UE's first antenna panel, and wherein the fourth SRS resource set is mapped to the UE's second antenna panel. While blocks 704 and 706 are described as optional steps, it is typical that only one of codebook-based or non-codebook-based transmission is configured for a given UE; for example, both SRS resource sets are configured for "codebook" transmission, or both SRS resource sets are configured for "non-codebook" transmission. In other specific implementations, it is also possible to configure SRS resource sets for both "codebook"-based and "non-codebook"-based PUSCH transmission.

[0120] Finally, at block 708, method 700 may transmit multi-panel transmission from the UE to at least one base station based on at least one of the following: a first SRS resource set and a second SRS resource set (i.e., either one currently configured). As will be understood, transmission may also be performed based on a third SRS resource set and / or a fourth SRS resource set (i.e., if either one is currently configured).

[0121] Now go to Figure 7BAccording to several aspects, a flowchart illustrating further details of a method 700 for performing enhanced OLPC for multi-panel transmission using a MAC CE is shown. First, returning to block 702, at block 720, method 700 may optionally update at least the pathlossReferenceRS parameter individually via the MAC CE for each of the two power control parameter sets already configured for a first SRS resource set (i.e., for codebook-based transmission). Similarly, at block 722, method 700 may optionally update at least the pathlossReferenceRS parameter individually via the MAC CE for each of the two power control parameter sets already configured for a second SRS resource set (i.e., for non-codebook-based transmission).

[0122] Next, returning to box 704, method 700 may optionally update at least the pathlossReferenceRS parameter individually via MAC CE for the first SRS resource set and / or the third SRS resource set (i.e., for codebook-based transmissions with two SRS resource sets already configured) at box 724. That is, the first and third SRS resource sets may be updated independently via the same MAC CE or using separate MAC-CEs. Similarly, returning to box 706, method 700 may optionally update at least the pathlossReferenceRS parameter individually via MAC CE for the second and / or the fourth SRS resource set (i.e., for non-codebook-based transmissions with two SRS resource sets already configured) at box 726. That is, the second and fourth SRS resource sets may be updated independently via the same MAC CE or using separate MAC-CEs.

[0123] Now go to Figure 8 According to several aspects, a flowchart detailing a method 800 for performing enhanced closed-loop power control (CLPC) for multi-panel transmission is shown. First, at block 802, method 800 may receive a transmit power control (TPC) command (e.g., in DCI format 2_3) at the UE, the transmit power control (TPC) command containing configuration information for each of the following: the UE's first antenna panel and the UE's second antenna panel.

[0124] Next, at block 804, method 800 may optionally map the first SRS resource to the UE's first antenna panel, map the second SRS resource to the UE's second antenna panel, and then apply a TPC command to both the first and second SRS resources (i.e., such that the TPC command, for example, for increasing or decreasing power, is utilized by both the UE's first and second antenna panels). It should be understood that the first and second SRS resources may come from the same SRS resource set, or they may come from different SRS resource sets.

[0125] At block 806, method 800 may optionally extract a first portion (e.g., one or two bits) of the TPC command containing configuration information for a first antenna panel to be applied to the UE; and extract a second portion (e.g., one or two bits different from the first portion) of the TPC command containing configuration information for a second antenna panel to be applied to the UE. For example, the TPC command may contain information specifying: increasing the power of the first antenna panel of the UE and decreasing the power of the second antenna panel of the UE; decreasing the power of the first antenna panel of the UE and increasing the power of the second antenna panel of the UE; increasing the power of both antenna panels of the UE; decreasing the power of both antenna panels of the UE; maintaining the same power for both antenna panels of the UE, etc.

[0126] Finally, at block 808, method 800 can use a first antenna panel and a second antenna panel to transmit multi-panel transmission from the UE to at least one base station based on at least a first SRS resource, a second SRS resource and a TPC command.

[0127] Additional notes

[0128] The use of the connective term "and / or" is intended to represent all possible alternative forms of the connective "and" and the connective "or". For example, the statement "configuration of A and / or B" includes the meanings of the statements "configuration of A and B" and "configuration of A or B".

[0129] As is widely recognized, the use of personally identifiable information should comply with privacy policies and practices that are generally accepted to meet or exceed industry or governmental requirements for protecting user privacy. Specifically, personally identifiable information data should be managed and processed to minimize the risk of unintentional or unauthorized access or use, and the nature of authorized use should be clearly explained to users.

[0130] Various aspects of this disclosure can be implemented in any of a variety of forms. For example, some aspects can be implemented as a computer-implemented method, a computer-readable storage medium, or a computer system. Other aspects can be implemented using one or more custom-designed hardware devices such as ASICs. Other aspects can be implemented using one or more programmable hardware elements such as FPGAs.

[0131] In some aspects, a non-transitory computer-readable storage medium may be configured to store program instructions and / or data, wherein the program instructions, when executed by a computer system, cause the computer system to perform a method (e.g., any aspect of the method described herein, or any combination of the method aspects described herein, or any subset of any method aspects described herein, or any combination of such subsets).

[0132] In some aspects, the device (e.g., UE 106, BS102) may be configured to include a processor (or a collection of processors) and a memory medium, wherein the memory medium stores program instructions, and wherein the processor is configured to read from the memory medium and execute the program instructions, wherein the program instructions are executable to implement any of the various method aspects described herein (or any combination of the method aspects described herein, or any subset of any method aspects described herein, or any combination of such subsets). The device can be implemented in any of the various forms.

[0133] Although the foregoing aspects have been described in considerable detail, many variations and modifications will become apparent to those skilled in the art once the foregoing disclosure is fully understood. It is intended that the following claims be construed as encompassing all such variations and modifications.

Claims

1. A method for enhancing power control of multi-panel user equipment (UE) transmissions, the method comprising: The UE receives configuration of at least one of the following: The first sounding reference signal (SRS) resource set used for codebook-based Physical Uplink Shared Channel (PUSCH) transmission; and The second SRS resource set used for non-codebook-based PUSCH transmission; as well as Multi-panel transmission is transmitted from the UE to at least one base station based on at least one of the first SRS resource set and the second SRS resource set.

2. The method according to claim 1, further comprising: The UE receives the configuration for transmitting a third SRS resource set based on codebook-based PUSCH. The first SRS resource set is mapped to the first antenna panel of the UE. The third SRS resource set is mapped to the second antenna panel of the UE, and The multi-panel transmission is performed based on the first SRS resource set and the third SRS resource set.

3. The method according to claim 1, further comprising: The UE receives the configuration for transmitting the fourth SRS resource set based on non-codebook PUSCH. The second SRS resource set is mapped to the first antenna panel of the UE. The fourth SRS resource set is mapped to the second antenna panel of the UE, and The multi-panel transmission is performed based on the second SRS resource set and the fourth SRS resource set.

4. The method of claim 1, wherein at least one of the first SRS resource set and the second SRS resource set includes an independently configurable set of power control parameters.

5. The method of claim 4, wherein the independently configurable power control parameter set includes at least one of the following parameters: α； P0; and pathlossReferenceRS.

6. The method of claim 1, wherein a single set of power control parameters is configured for the first SRS resource set.

7. The method of claim 1, wherein two sets of power control parameters are configured for the first SRS resource set.

8. The method of claim 7, wherein at least one of the following: α parameter; P0 parameter; or pathlossReferenceRS parameters Individually configured for each of the two power control parameter sets configured for the first SRS resource set.

9. The method according to claim 7, wherein: For each of the two power control parameter sets configured for the first SRS resource set, at least the pathlossReferenceRS parameter is updated individually via a Media Access Control (MAC) control element (CE).

10. The method of claim 9, wherein the MAC CE further comprises one or more of the following: Indication for the serving cell ID containing the first SRS resource set; An indication of the bandwidth portion (BWP) containing the first SRS resource set; or The identifier for the first SRS resource set.

11. The method of claim 2, wherein at least the pathlossReferenceRS parameter is updated individually for the first SRS resource set and / or the third SRS resource set via a Media Access Control (MAC) control element (CE).

12. The method of claim 11, wherein the MAC CE further comprises one or more of the following: An indication of the serving cell ID containing either the first SRS resource set or the third SRS resource set; Indication of the bandwidth portion (BWP) containing the first SRS resource set or the third SRS resource set; The identifier for the first SRS resource set; or The identifier for the third SRS resource set.

13. The method according to claim 7, wherein: The first power control parameter set is configured for the first P0 parameter in the two power control parameter sets of the first SRS resource set; and The second power control parameter set configured for the two power control parameter sets of the first SRS resource set configures the second P0 parameter.

14. The method according to claim 7, wherein: The first transmit power (T0) is calculated based on the first power control parameter set from the two power control parameter sets configured for the first SRS resource set. The second transmit power (T1) is calculated based on the second power control parameter set from the two power control parameter sets configured for the first SRS resource set, and the target transmit power for multi-panel transmission according to the first SRS resource set is configured as one of the following: (a) The maximum value between T0 and T1; or (b) The minimum value between T0 and T1.

15. The method according to claim 7, wherein: The first transmit power (T0) is calculated based on the first power control parameter set from the two power control parameter sets configured for the first SRS resource set. The second transmit power (T1) is calculated based on the second power control parameter set from the two power control parameter sets configured for the first SRS resource set. The target transmission power for multi-panel transmission based on a first or more SRS resources in the first SRS resource set is configured as T0, and the target transmission power for multi-panel transmission based on a second or more SRS resources in the first SRS resource set is configured as T1.

16. The method of claim 1, wherein a single power control parameter set is configured for the second SRS resource set.

17. The method of claim 1, wherein two sets of power control parameters are configured for the second SRS resource set.

18. The method of claim 17, wherein at least one of the following: α parameter; P0 parameter; or pathlossReferenceRS parameters Individually configured for each of the two power control parameter sets configured for the second SRS resource set.

19. The method of claim 17, wherein: For each of the two power control parameter sets configured for the second SRS resource set, at least the pathlossReferenceRS parameter is updated individually via a Media Access Control (MAC) control element (CE).

20. The method of claim 19, wherein the MAC CE further comprises one or more of the following: Indication for the serving cell ID containing the second SRS resource set; An indication of the bandwidth portion (BWP) containing the second SRS resource set; or The identifier for the second SRS resource set.

21. The method of claim 3, wherein at least the pathlossReferenceRS parameter is updated individually for the second SRS resource set and / or the fourth SRS resource set via a Media Access Control (MAC) control element (CE).

22. The method of claim 21, wherein the MAC CE further comprises one or more of the following: Indication for a serving cell ID containing either the second SRS resource set or the fourth SRS resource set; Indication of a bandwidth portion (BWP) containing the second SRS resource set or the fourth SRS resource set; The identifier for the second SRS resource set; or The identifier for the fourth SRS resource set.

23. The method of claim 17, wherein: The first power control parameter set configured for the two power control parameter sets of the second SRS resource set configures the first P0 parameter; and The second power control parameter set configured for the second SRS resource set is configured with the second P0 parameter.

24. The method of claim 17, wherein: The first transmit power (T0) is calculated based on the first power control parameter set from the two power control parameter sets configured for the second SRS resource set. The second transmit power (T1) is calculated based on the second power control parameter set from the two power control parameter sets configured for the second SRS resource set, and the target transmit power for multi-panel transmission according to the second SRS resource set is configured as one of the following: (a) The maximum value between T0 and T1; or (b) The minimum value between T0 and T1.

25. The method of claim 17, wherein: The first transmit power (T0) is calculated based on the first power control parameter set from the two power control parameter sets configured for the second SRS resource set. The second transmit power (T1) is calculated based on the second power control parameter set from the two power control parameter sets configured for the second SRS resource set. The target transmission power for multi-panel transmission based on the first or more SRS resources in the second SRS resource set is configured as T0, and the target transmission power for multi-panel transmission based on the second or more SRS resources in the second SRS resource set is configured as T1.

26. A method for enhancing power control of multi-panel user equipment (UE) transmissions, the method comprising: At the UE, a transmit power control (TPC) command containing configuration information for each of the following: The first antenna panel of the UE; and The second antenna panel of the UE; as well as Based on at least the first SRS resource, the second SRS resource, and the TPC command, the first antenna panel and the second antenna panel are used to transmit multi-panel transmission from the UE to at least one base station.

27. The method of claim 26, wherein the TPC command is received in DCI format 2_3.

28. The method of claim 26, wherein the first SRS resource is mapped to the first antenna panel of the UE, and wherein the TPC command is applied to the first SRS resource.

29. The method of claim 28, wherein the second SRS resource is mapped to the second antenna panel of the UE, and wherein the TPC command is applied to the second SRS resource.

30. The method of claim 26, wherein: The first part of the TPC command contains configuration information applied to the first antenna panel of the UE; and The second part of the TPC command contains configuration information applied to the second antenna panel of the UE.

31. The method of claim 30, wherein the first portion and the second portion of the TPC command each comprise a single bit.

32. The method of claim 30, wherein the first portion and the second portion of the TPC command each comprise two or more bits.

33. An apparatus, the apparatus comprising: Receiver; Transmitter; and a processor, the processor being configured to perform the method according to any one of claims 1-32.

34. A non-volatile computer-readable medium storing instructions that, when executed, cause the method according to any one of claims 1-32 to be performed.

35. A baseband processor configured to cause a wireless device to perform the method according to any one of claims 1-32.

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