Transmit and receive power for full-duplex systems

Abstract

The present disclosure relates to a 5G or 6G communication system for supporting higher data transmission rates. An apparatus and method for transmit power in a full duplex system is provided. A method of operating a user equipment (UE) for receiving a downlink (DL) channel or signal includes receiving first information for a first parameter set for a first DL channel or signal associated with a first slot subset from a slot set on a cell and second information for a second parameter set for a second DL channel or signal associated with a second slot subset from a slot set on a cell. The method additionally includes determining to use the second parameter set for the reception based on a slot for reception being from the second slot subset and receiving the second DL channel or signal in the slot based on a power adjustment value of the second parameter set.

Description

[Technical field]

[0001] TECHNICAL FIELD This disclosure relates generally to wireless communication systems, and more specifically to transmit and receive power in a full-duplex system. [Background technology]

[0002] Fifth generation (5G) or new radio (NR) mobile communications has recently been gaining momentum with global technical activity from industry and academia for various candidate technologies. Candidates for enabling 5G / NR mobile communications include large-scale antenna technologies extending from legacy cellular frequency bands to higher frequencies to provide beamforming gain and support increased capacity, new waveforms (e.g., new radio access technologies (RATs)) to flexibly accommodate various services / applications with different requirements, and new multiple access schemes to support large-scale connections.

[0003] In addition, 5G mobile communication technology defines a wide frequency band to enable high transmission rates and new services, and can be implemented not only in bands below 6GHz such as 3.5GHz, but also in bands above 6GHz, called millimeter wave (mmWave), such as 28GHz and 39GHz.In addition, it is also being considered to implement 6G mobile communication technology in the terahertz band (e.g., 95GHz and 3THz bands) to achieve transmission speeds 50 times faster than 5G mobile communication technology and ultra-low latency times that are one-tenth of those of 5G mobile communication technology (called Beyond 5G systems).

[0004] In the early stage of 5G mobile communications technology, the following technologies will be developed to support services and satisfy performance requirements for enhanced Mobile Broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC): beamforming and massive MIMO to mitigate radio wave path loss and increase radio wave transmission distance in millimeter waves, various numerology support (e.g., multiple subcarrier spacing control) and dynamic control of slot format for efficient use of millimeter wave resources, initial connection technology to support multiple beam transmission and wideband, definition and operation of BWP (Band-Width Part), new channel coding methods such as LDPC (Low Density Parity Check) code for large volume data transmission and polar code for reliable transmission of control information, L2 pre-processing, and network slicing to provide dedicated networks specialized for specific services. Standardization of the 3D slicing technology has been progressing.

[0005] Currently, discussions are underway to improve the initial 5G mobile communications technology and its performance in consideration of the services that 5G mobile communications technology is intended to support. Physical layer standardization is underway for technologies such as Vehicle-to-Everything (V2X), which aims to increase user convenience by helping autonomous vehicles make driving decisions based on their own location and status information sent by the vehicle, New Radio Unlicensed (NR-U), which aims to operate systems that comply with various regulatory requirements in unlicensed bands, NR UE power saving, Non-Terrestrial Network (NTN), which is direct communication between UE and satellite to ensure coverage in areas where communication with terrestrial networks is not possible, and positioning.

[0006] In addition, standardization of radio interface architecture / protocols for technologies such as Industrial Internet of Things (IIOT) to support new services through linkage and integration with other industries, Integrated Access and Backhaul (IAB) to provide nodes to expand network service areas by supporting wireless backhaul links and access links in an integrated manner, mobility enhancement technologies including Conditional Handover and Dual Active Protocol Stack (DAPS) handover, and 2-step random access (2-step RACH for NR) to simplify random access procedures is also underway. Also underway are standardization of system architecture / service areas for 5G baseline architectures (e.g., Service based Architecture, Service based Interface) to combine Network Functions Virtualization (NFV) and Software-Defined Networking (SDN) technologies, and Mobile Edge Computing (MEC) to receive services based on the UE's location.

[0007] As 5G mobile communication systems are commercialized, an explosive increase in connected devices will be connected to the communication network. Accordingly, it is expected that the improvement of the functions and performance of 5G mobile communication systems and the integrated operation of connected devices will be necessary. For this reason, new research is planned for eXtended Reality (XR) to efficiently support Augmented Reality (AR), Virtual Reality (VR), Mixed Reality (MR), etc., 5G performance improvement and complexity reduction using Artificial Intelligence (AI) and Machine Learning (ML), AI service support, Metabus service support, drone communication, etc.

[0008] In addition, the development of such 5G mobile communication systems will be the basis for the development of new waveforms to ensure coverage in the terahertz band of 6G mobile communication technology, multi-antenna transmission technologies such as full dimensional multiple input / output (FD-MIMO), array antennas, and large scale antennas, metamaterial-based lenses and antennas to improve the coverage of terahertz band signals, high-dimensional spatial multiplexing technology using orbital angular momentum (OAM), and reconfigurable intelligent surface (RIS) technology, as well as full duplex technology to improve the frequency efficiency of 6G mobile communication technology and improve system networks, AI-based communication technology that utilizes satellites and artificial intelligence (AI) from the design stage and incorporates end-to-end AI support functions to realize system optimization, and next-generation distributed computing technology that utilizes ultra-high performance communication and computing resources to realize services with a level of complexity that exceeds the limits of terminal computing capabilities. Summary of the Invention [Problem to be solved by the invention]

[0009] The present disclosure relates to an apparatus and method for supporting transmit and receive power in a full-duplex system. [Means for solving the problem]

[0010] In one embodiment, a method of operating a user equipment (UE) for receiving a downlink (DL) channel or signal is provided. The method includes receiving first information for a first parameter set for a first DL channel or signal associated with a first slot subset from a slot set on a cell, and receiving second information for a second parameter set for a second DL channel or signal associated with a second slot subset from a slot set on a cell. The method additionally includes determining to use a second parameter set for reception based on the slot for reception being from the second slot subset, and receiving the second DL channel or signal in the slot based on a power adjustment value of the second parameter set. The slot from the first slot subset does not include time-domain resources designated for simultaneous transmission and reception on the cell. The slot from the second slot subset includes time-domain resources designated for simultaneous transmission and reception on the cell.

[0011] In another embodiment, a UE is provided. The UE includes a transceiver configured to receive first information for a first parameter set for a first DL channel or signal associated with a first slot subset from a slot set on a cell and to receive second information for a second parameter set for a second DL channel or signal associated with a second slot subset from a slot set on a cell. The UE additionally includes a processor operatively coupled to the transceiver. The processor is configured to determine to use a second parameter set for reception based on the slot for reception being from the second slot subset. The transceiver is additionally configured to receive the second DL channel or signal at the slot based on a power adjustment value of the second parameter set. The slot from the first slot subset does not include time-domain resources designated for simultaneous transmission and reception on the cell. The slot from the second slot subset includes time-domain resources designated for simultaneous transmission and reception on the cell.

[0012] In yet another embodiment, a base station (BS) is provided. The BS includes a transceiver configured to transmit first information for a first parameter set for a first DL channel or signal associated with a first slot subset from a slot set on a cell, and transmit second information for a second parameter set for a second DL channel or signal associated with a second slot subset from a slot set on a cell. The BS additionally includes a processor operatively coupled to the transceiver, the processor configured to determine to transmit with a second parameter set based on the slot for transmission being from the second slot subset. The transceiver is additionally configured to transmit the second DL channel or signal in the slot based on a power adjustment value of the second parameter set. The slots from the first slot subset do not include time-domain resources designated for simultaneous transmission and reception on the cell. The slots from the second slot subset include time-domain resources designated for simultaneous transmission and reception on the cell.

[0013] Other technical features will be readily apparent to those skilled in the art from the following drawings, descriptions, and claims.

[0014] Before proceeding with the detailed description below, it is necessary to define certain words and phrases used throughout this patent document. The term "couple" and its derivatives refer to any direct or indirect communication between two or more elements, whether or not the two or more elements are in physical contact with one another. The terms "transmit," "receive," and "communicate," and their derivatives, include both direct and indirect communication. The terms "include" and "comprise," as well as their derivatives, refer to inclusion without limitation. The term "or" is inclusive and / or. The term "associated with" as well as derivatives thereof means "include," "included within," "interconnect with," "contain," "be contained within," "connect to or with," "couple to or with," "be communicable with," "cooperate with," "interleave," "juxtapose with," "be proximate to," "be bound to or with," "have," "have a property of," "have a relationship to or with," and the like. The term "controller" refers to any device, system, or portion thereof that controls at least one operation. A controller may be embodied in hardware or a combination of hardware and software and / or firmware. The functionality associated with any particular controller may be centralized or distributed, whether locally or remotely.The phrase "at least one of," when used in conjunction with a list of items, means that different combinations of one or more of the listed items may be used, and only one item in the list is required. For example, "at least one of A, B, and C" includes any of the following combinations: A, B, C, A and B, A and C, B and C, A and B and C.

[0015] Furthermore, various functions described below may be embodied or supported by one or more computer programs, each computer program being formed from computer-readable program code and embodied in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, sets of instructions, procedures, functions, objects, classes, instances, associated data, or portions thereof adapted for implementation in suitable computer-readable program code. The term "computer-readable program code" includes any type of computer code, including source code, object code, and executable code. The term "computer-readable medium" includes any type of medium that can be accessed by a computer, such as read only memory (ROM), Random Access Memory (RAM), hard disk drive, Compact Disc (CD), Digital Video Disc (DVD), or any other type of memory. A "non-transitory" computer-readable medium excludes wired, wireless, optical, or other communication links that transmit transient electrical or other signals. Non-transitory computer readable media includes media that can permanently store data, as well as media where data is stored and later overwritten, such as re-recordable optical disks or erasable memory devices.

[0016] Definitions of other specific words and phrases are provided throughout this patent document, and one of ordinary skill in the art should understand that in most cases, these definitions apply to the context of use of those defined words and phrases. Effect of the Invention

[0017] According to embodiments of the present disclosure, carrier phase-based positioning measurements can be efficiently performed. [Brief description of the drawings]

[0018] For a more complete understanding of the present disclosure, and the advantages thereof, reference is now made to the following description taken in conjunction with the accompanying drawings, in which like reference numerals indicate the same parts, and in which: [Figure 1] 1 illustrates an example of a wireless network in accordance with an embodiment of the present disclosure. [Diagram 2] 1 illustrates an exemplary gNodeB (gNB) according to an embodiment of the present disclosure. [Diagram 3] 1 illustrates an exemplary user equipment (UE) according to an embodiment of the present disclosure. [Figure 4] 1 illustrates an example wireless transmit and receive path according to an embodiment of the present disclosure. [Diagram 5] 1 illustrates an example wireless transmit and receive path according to an embodiment of the present disclosure. [Figure 6] 1 illustrates an example uplink / downlink (UL-DL) frame configuration in a TDD communication system according to an embodiment of the present disclosure. [Figure 7] 1 illustrates an example UL-DL frame configuration in a full-duplex communication system according to an embodiment of the present disclosure. [Figure 8] 1 illustrates an example of transmission and reception in a full-duplex communication system according to an embodiment of the present disclosure. [Figure 9] 1 illustrates an example of UE UL transmit power control with two configured maximum output power values ​​per serving cell using p-Max according to an embodiment of the present disclosure. [Figure 10] 1 illustrates an example of UE UL transmit power control with two configured maximum output power values ​​per serving cell using p-Max and A-MPR according to an embodiment of the present disclosure. [Figure 11] 1 illustrates an example UL transmit power medium access control element (MAC CE) according to an embodiment of the present disclosure. [Figure 12] 1 illustrates an example method performed by a UE to determine a maximum output power for a Physical Uplink Shared Channel (PUSCH) transmission in a slot using p-Max according to an embodiment of the present disclosure. [Figure 13] 1 illustrates an example method performed by a UE to determine the maximum output power for PUSCH transmission in a slot using p-Max and A-MPR according to an embodiment of the present disclosure. [Figure 14] 1 illustrates an example of channel state information (CSI) resource configuration in a full-duplex communication system according to an embodiment of the present disclosure. [Figure 15] 1 illustrates an example use of a configurable DL power adjustment value for a physical downlink shared channel (PDSCH) in a full-duplex communication system according to an embodiment of the present disclosure. [Figure 16] 1 illustrates an example method performed by a UE to use a DL power adjustment value configured for PDSCH reception in a full-duplex system according to an embodiment of the present disclosure. [Figure 17] 1 illustrates an example method performed by a UE to use Downlink Control Information (DCI)-signaled DL power adjustments in a full-duplex system according to an embodiment of the present disclosure. [Figure 18] 1 illustrates an example of multiple CSI reference signal (CSI-RS) power adjustment values ​​per CSI resource in a full-duplex communication system according to an embodiment of the present disclosure. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] 1-18 discussed below, and the various embodiments used to explain the principles of the present disclosure in this patent document, are for illustrative purposes only and should not be construed as limiting the scope of the present disclosure in any way. Those skilled in the art will appreciate that the principles of the present disclosure may be implemented in any suitably configured system or device.

[0020] The following documents and standard descriptions are incorporated by reference into this disclosure as if fully set forth herein: 3GPP TS 38.211 v17.0.0, "NR, Physical channels and modulation" (herein, "REF 1"); 3GPP TS 38.212 v17.0.0, "NR, Multiplexing and Channel coding" (herein, "REF 2"); 3GPP TS 38.213 v17.0.0, "NR, Physical Layer Procedures for Control" (herein, "REF 3"); 3GPP TS 38.214 v17.0.0, "NR, Physical Layer Procedures for Data" (herein, "REF 4"); 3GPP TS 38.321 v16.5.0, "NR, Medium Access Control (MAC) Protocol Specification" (herein, "REF 5"); 3GPP TS 38.331v16.5.0, “NR, Radio Resource Control (RRC) Protocol Specification” (herein, “REF 6”), 3GPP TS 38.101-1 / -2 / -3 v.16.6.0 / 16.9.0 / 16.9.0, “NR; UE radio transmission and reception; Part 1: Range 1Standalone / Part 2: Range 2Standalone / Part 3: Range 1and Range 2 Interworking operation with other radios” (herein, “REF 7”), and 3GPP TS 38.133 v16.8.0, "NR; Requirements for support of radio resource management" (herein, "REF 8").

[0021] Wireless communication is one of the most successful innovations in modern history. In recent years, the number of wireless communication service subscribers has exceeded 5 billion and continues to grow rapidly. Demand for wireless data traffic is growing rapidly due to the increasing popularity among consumers and businesses of smartphones and other mobile devices, such as tablets, notepad computers, netbooks, e-book readers and machine type devices. To meet the high growth in mobile data traffic and support new applications and applications, improvements in air interface efficiency and coverage are of paramount importance.

[0022] To meet the increased demand for wireless data traffic after the construction of the 4G communication system, 5G / NR communication systems are being developed and currently being constructed to enable various vertical applications. The 5G / NR communication system is considered to be implemented in higher frequency (mmWave) bands, for example, 28 GHz or 60 GHz bands, to achieve higher data transmission rates, or in lower frequency bands such as 6 GHz to enable strong coverage and mobility support. In order to reduce radio wave propagation loss and increase transmission distance, beamforming, giant multiple-input multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and large-scale antenna technologies are being discussed in the 5G / NR communication system.

[0023] Furthermore, in the 5G / NR communication system, development to improve the system network is being carried out based on advanced small cells, cloud radio access networks (RAN), ultra-high density networks, device-to-device (D2D), wireless backhaul, mobile networks, cooperative communications, coordinated multi-points (CoMP), and receiver-side interference cancellation.

[0024] Discussion of 5G systems and associated frequency bands is for reference only, as certain embodiments of the present disclosure may be embodied in a 5G system. However, the present disclosure is not limited to 5G systems or associated frequency bands, and embodiments of the present disclosure may be utilized in connection with any frequency band. For example, aspects of the present disclosure may be applied to the construction of 5G communication systems, 6G, or later releases that may use the terahertz (THz) band.

[0025] The following Figures 1-3 illustrate various embodiments implemented using orthogonal frequency division multiplexing (OFDM) or orthogonal frequency division multiple access (OFDMA) communication techniques in a wireless communication system. The illustrations of Figures 1-3 are not meant to imply physical or architectural limitations to the manner in which various other embodiments may be implemented. Some other embodiments of the present disclosure may be implemented in any suitably arranged communication system.

[0026] 1 illustrates an example of a wireless network according to a subexample of the present disclosure. The embodiment of the wireless network shown in FIG. 1 is for illustration purposes only. Other embodiments of the wireless network 100 may be used without departing from the scope of the present disclosure.

[0027] 1, a wireless network includes eNB101 (e.g., a base station (BS)), eNB102, and eNB103. eNB101 communicates with eNB102 and eNB103. eNB101 further communicates with at least one network 130, such as the Internet, a proprietary Internet Protocol (IP) network, or other data network.

[0028] The eNB 102 provides wireless broadband access to the network 130 for a first plurality of User Equipment (UE) within the coverage area 120 of the eNB 102. The first plurality of UEs includes UE 111, which may be located in a small business, UE 112, which may be located in an enterprise, UE 113, which may be located in a WiFi hotspot, UE 115, which may be located in a first residence, and UE 116, which may be a mobile device such as a cell phone, a wireless laptop, a wireless PDA, etc. The eNB 103 provides wireless broadband access to the network 130 for a second plurality of UEs within the coverage area 125 of the eNB 103. The second plurality of UEs includes UE 115 and UE 116. In some embodiments, one or more of the gNBs (101-103) may communicate with each other and the UEs (111-116) using 5G / NR, Long Term Evolution (LTE), Long Term Evolution-Advanced (LTE-A), WiMAX, WiFi, or other wireless communication techniques.

[0029] Depending on the network type, the term "base station" or "BS" can refer to any entity (or collection of entities) configured to provide wireless access to a network, such as a transmission point (TP), a transmit / receive point (TRP), an enhanced base station (eNode B or eNB), a gNB, a macrocell, a femtocell, a WiFi access point (AP), or other wireless-enabled device. A base station can provide wireless access via one or more wireless communication protocols, such as 5G 3GPP new radio interface / access (NR), long term evolution (LTE), LTE-advanced (LTE-A), high speed packet access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc. For convenience, the terms "BS" and "TRP" are used in this patent document to refer to network infrastructure entities that provide wireless access to remote terminals. Also, depending on the network type, the term "user equipment" or "UE" can refer to any entity such as a "mobile station," "subscriber station," "remote terminal," "wireless terminal," "receiving point," or "user equipment." For convenience, the terms "user equipment" and "UE" are used in this patent document to refer to a remote wireless device that wirelessly accesses a BS, whether the UE is a mobile device (such as a mobile phone or smartphone) or is generally considered to be a fixed device (e.g., a desktop computer or a vending machine).

[0030] The dotted lines illustrate the approximate extent of coverage areas (120 and 125), which are depicted in a roughly circular shape for purposes of illustration and explanation only. It should be clearly understood that coverage areas associated with gNBs, such as coverage areas (120 and 125), can have other shapes, including irregular shapes, depending on the configuration of the gNB and variations in the radio environment associated with natural and man-made obstacles.

[0031] As described in more detail below, one or more of the UEs (111-116) include circuitry, programming, or a combination thereof for supporting receive power in a full-duplex system. In certain embodiments, one or more of the BSs (101-103) include circuitry, programming, or a combination thereof for supporting transmit power in a full-duplex system.

[0032] Although FIG. 1 illustrates an example of wireless network 100, various modifications may be made to FIG. 1. For example, wireless network 100 may include any number of gNBs and any number of UEs in any suitable arrangement. Additionally, gNB 101 may directly communicate with any number of UEs and provide such UEs with wireless broadband access to network 130. Similarly, each gNB 102-103 may directly communicate with network 130 and provide UEs with direct wireless broadband access to the network. Additionally, gNBs 101, 102 and / or 103 may provide access to other or additional external networks, such as an external telephone network or other type of data network.

[0033] Figure 2 illustrates an example eNB 102 according to an embodiment of the present disclosure. The embodiment of eNB 102 illustrated in Figure 2 is for illustration purposes only, and eNBs 101 and 103 of Figure 1 may have the same or similar configurations. However, eNBs have a variety of configurations, and Figure 2 does not limit the scope of the present disclosure to any particular implementation of a BS.

[0034] As shown in FIG. 2, the gNB 102 includes multiple antennas (205a-205n), multiple transceivers (210a to 210n), a controller / processor 225, memory 230, and a backhaul or network interface 235.

[0035] The transceivers (210a-210n) receive incoming RF signals from the antennas (205a-205n), such as signals transmitted by UEs in the network 100. The transceivers (210a-210n) down-convert the incoming RF signals to generate IF or baseband signals. The IF or baseband signals are processed by receive (RX) processing circuitry of the transceivers (210a-210n) and / or controller / processor 225, which generate processed baseband signals by filtering, decoding, and / or digitizing the baseband or IF signals. The controller / processor 225 may additionally process the baseband signals.

[0036] The transmit (TX) processing circuitry of the transceivers 210a-210n and / or controller / processor 225 receives analog or digital data (e.g., voice data, web data, email, or interactive video game data) from the controller / processor 225. The TX processing circuitry encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The transceivers 210a-210n upconvert the baseband or IF signal to an RF signal that is transmitted via the antennas 205a-205n.

[0037] The controller / processor 225 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 225 may control the reception of UL channel signals and the transmission of DL channel signals by the transceivers 210a-210n in accordance with well-known principles. The controller / processor 225 may also support additional functions, such as more advanced wireless communication functions. For example, the controller / processor 225 may support beamforming or directional routing operations that provide different weighting to outgoing / incoming signals from / to the multiple antennas 205a-205n, effectively steering the outgoing signals to a desired direction. As another example, the controller / processor 225 may support a method of supporting transmit power in a full-duplex system. Any other functions may be supported in the gNB 102 by the controller / processor 225.

[0038] The controller / processor 225 may also execute programs and other processes resident in memory 230, such as processes for supporting transmit power in a full-duplex system. The controller / processor 225 may move data in and out of memory 230 as required by the executing processes.

[0039] The controller / processor 225 is coupled to a backhaul or network interface 235. The backhaul or network interface 235 allows the gNB 102 to communicate with other devices or systems through a backhaul connection or network. The interface 235 may support communication over any suitable wired or wireless connection. For example, when the gNB 102 is embodied as part of a cellular communication system (such as supporting 5G, LTE, or LTE-A), the interface 235 allows the gNB 102 to communicate with other gNBs over a wired or wireless backhaul connection. When the gNB 102 is embodied as an access point, the interface 235 allows the gNB 102 to communicate to a wired or wireless local area network or a larger network (such as the Internet) over a wired or wireless connection. The interface 235 may include any suitable structure supporting communication over a wired or wireless connection, such as an Ethernet or transceiver.

[0040] The memory 230 is coupled to the controller / processor 225. A portion of the memory 230 may include RAM, and another portion of the memory 230 may include flash memory or other ROM.

[0041] Although Figure 2 illustrates one example of a gNB 102, various modifications to Figure 2 can be made. For example, gNB 102 can include any number of each of the components shown in Figure 2. Also, various components of Figure 2 can be combined, subdivided, or omitted, and additional components can be added depending on particular needs.

[0042] Figure 3 illustrates an example UE 116 according to an embodiment of the present disclosure. The embodiment of UE 116 illustrated in Figure 3 is for illustration purposes only, and the UEs (111-115) of Figure 1 may have the same or similar configurations. However, UEs have a wide variety of configurations, and Figure 3 does not limit the scope of the present disclosure to any particular implementation of a UE.

[0043] 3, the UE 116 includes an antenna 305, a transceiver 310, and a microphone 320. The UE 116 also includes a speaker 330, a processor 340, an input / output (I / O) interface (IF) 345, an input 350, a display 355, and a memory 360. The memory 360 includes an OS 361 and one or more applications 362.

[0044] The transceiver 310 receives from the antenna 305 an incoming RF signal transmitted by a gNB of the network 100. The transceiver 310 downconverts the incoming RF signal to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is processed by RX processing circuitry of the transceiver 310 and / or processor 340, which generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. The RX processing circuitry transmits the processed baseband signal to the speaker 330 (e.g., for voice data) or for processing by the processor 340 (e.g., for web browsing data).

[0045] The TX processing circuitry of the transceiver 310 and / or processor 340 receives analog or digital voice data from the microphone 320 or other outgoing baseband data (e.g., web data, email, or interactive video game data) from the processor 340. The TX processing circuitry encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The transceiver 310 upconverts the baseband or IF signal to an RF signal that is transmitted via the antenna 305.

[0046] Processor 340 may include one or more processors or other processing devices and may execute an OS 361 stored in memory 360 to control the overall operation of UE 116. For example, processor 340 may control the reception of DL channel signals and the transmission of UL channel signals by transceiver 310 according to well-known principles. In some embodiments, processor 340 includes at least one microprocessor or microcontroller.

[0047] The processor 340 may also execute other processes and programs resident in the memory 360, such as processes for supporting receive power in a full-duplex system. The processor 340 may move data in and out of the memory 360 as required by the executing processes. In some embodiments, the processor 340 is configured to execute applications 362 based on an OS 361 or in response to signals received from a gNB or an operator. The processor 340 is further coupled to an I / O interface 345, which provides the UE 116 with the ability to interface to other devices, such as laptop computers and handheld computers. The I / O interface 345 is a communication path between such accessories and the processor 340.

[0048] Processor 340 is further coupled to an input 350 and a display 355, which may include, for example, a touch screen, a keypad, etc. An operator of UE 116 may use input 350 to input data into UE 116. Display 355 may be a liquid crystal display, a fluorescent diode display, or other display capable of rendering text and / or at least limited graphics, such as a website.

[0049] Memory 360 is coupled to processor 340. A portion of memory 360 may include random access memory (RAM), and another portion of memory 360 may include flash memory or other read-only memory (ROM).

[0050] Although FIG. 3 illustrates an example of a UE 116, various modifications may be made to FIG. 3. For example, various components of FIG. 3 may be combined, further subdivided, or omitted, and additional components may be added as needed. As a specific example, the processor 340 may be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). In other examples, the transceiver 310 may include any number of transceivers and signal processing chains and may be connected to any number of antennas. Also, although FIG. 3 illustrates a UE 116 configured as a mobile phone or smartphone, the UE may be configured to operate as other types of mobile or fixed devices.

[0051] A communication system includes a downlink (DL), which refers to transmission from a base station or one or more transmission points to a UE, and an uplink (UL), which refers to transmission from the UE to a base station or one or more reception points.

[0052] The time unit for DL ​​or UL signaling on a cell is called a slot and can contain one or more symbols. Symbols can also be used for additional time units. The frequency (or bandwidth (BW)) unit is called a resource block (RB). One RB contains many sub-carriers (SCs). For example, a slot can have a duration of 0.5 ms or 1 ms and can contain 14 symbols, an RB can contain 12 SCs with 15 kHz or 30 KHz spacing between the SCs, etc.

[0053] DL signals include data signals carrying information content, control signals carrying DL control information (DCI), and reference signals (RS), also called pilot signals. The gNB transmits data information or DCI over a respective physical DL shared channel (PDSCH) or physical DL control channel (PDCCH). The PDSCH or PDCCH can be transmitted over various numbers of slot symbols, including one slot symbol. For brevity, a DCI format for scheduling PDSCH reception by a UE is referred to as a DL DCI format, and a DCI format for scheduling PUSCH transmission from a UE is referred to as a UL DCI format.

[0054] The gNB transmits one or more of many types of RS including Channel State Information RS (CSI-RS) and Demodulation RS (DMRS). CSI-RS is mainly for UE to perform measurements and provide channel state information (CSI) to the gNB. For channel measurements, non-zero power CSI-RS (NZP CSI-RS) resources are used. For interference measurement reports (IMR), CSI interference measurement (CSI-IM) resources related to zero power CSI-RS (ZP CSI-RS) configuration are used. The CSI process consists of NZP CSI-RS and CSI-IM resources.

[0055] The UE can determine CSI-RS transmission parameters from the gNB through DL control signaling or higher layer signaling, such as radio resource control (RRC) signaling. The transmission instance of the CSI-RS can be indicated by DL control signaling or configured by higher layer signaling. The DMRS is transmitted only in the BW of each PDCCH or PDSCH, and the UE can demodulate data or control information using the DMRS.

[0056] 4 and 5 illustrate example wireless transmit and receive paths according to the present disclosure. In the following description, the transmit path 400 of FIG. 4 may be described as being implemented in a BS (such as BS 102), while the receive path 500 of FIG. 5 may be described as being implemented in a UE (such as UE 116). However, it may be understood that the receive path 500 may be implemented in a BS and the transmit path 400 may be implemented in a UE. In some embodiments, the receive path 500 is configured to support transmit power in a full-duplex system as described in embodiments of the present disclosure. In other embodiments, the receive path 500 is configured to support receive power in a full-duplex system as described in embodiments of the present disclosure.

[0057] The transmit path 400 illustrated in Figure 4 includes a channel coding and modulation block 405, a serial-to-parallel (S-to-P) block 410, an inverse fast Fourier transform (IFFT) block of size N (415), a parallel-to-serial (P-to-S) block 420, an add cyclic prefix block 425, and an up-converter (UC) 430. The receive path 500 illustrated in Figure 5 includes a down-converter (DC) 555, a remove cyclic prefix block 560, a serial-to-parallel (S-to-P) block 565, a fast Fourier transform (FFT) block of size N (570), a parallel-to-serial (P-to-S) block 575, and a channel decoding and demodulation block 580.

[0058] As illustrated in FIG. 4, the channel coding and modulation block 405 receives a set of information bits and applies coding (e.g., low-density parity check (LDPC) coding) and modulates (e.g., quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) the input bits to generate a sequence of frequency-domain modulation symbols.

[0059] The serial-to-parallel block 410 converts (e.g., demultiplexes) the serially modulated symbols with parallel data to generate N parallel symbol streams, where N is the IFFT / FFT size used at the BS 102 and the UE 116. The size-N IFFT block 415 performs an IFFT operation on the N parallel symbol streams to generate a time-domain output signal. The parallel-to-serial block 420 converts (e.g., multiplexes) the parallel time-domain output symbols from the size-N IFFT block 415 to generate a serial time-domain signal. The add cyclic prefix block 425 inserts a cyclic prefix into the time-domain signal. The upconverter 430 modulates (e.g., upconverts) the output of the add cyclic prefix block 425 to an RF frequency for transmission over a wireless channel. The signal may also be baseband filtered before being converted to an RF frequency.

[0060] The RF signal transmitted from BS 102 passes through a radio channel and then reaches UE 116, where the reverse operation to that of BS 102 is carried out.

[0061] As illustrated in FIG. 5, downconverter 555 downconverts the received signal to a baseband frequency, and remove cyclic prefix block 560 removes the cyclic prefix to generate a serial time-domain baseband signal. Serial-to-parallel block 565 converts the time-domain baseband signal to a parallel time-domain signal. Size N FFT block 570 performs an FFT algorithm to generate N parallel frequency-domain signals. Parallel-to-serial block 575 converts the parallel frequency-domain signals to a sequence of modulated data symbols. Channel decoding and demodulation block 580 demodulates and decodes the modulated symbols to recover the original input data stream.

[0062] Each of the BSs (101-103) may implement a transmit path 400 as illustrated in Figure 4 for transmitting on the downlink to the UEs (111-116) and may implement a receive path 500 as illustrated in Figure 5 for receiving on the uplink from the UEs (111-116). Similarly, each of the UEs (111-116) may implement a transmit path 400 for transmitting on the uplink to the BSs (101-103) and may implement a receive path 500 for receiving on the downlink from the BSs (101-103).

[0063] Each of the components in Figures 4 to 5 may be implemented using hardware or a combination of hardware and software / firmware. As a specific example, at least some of the components in Figures 4 and 5 may be implemented in software, while other components may be implemented in configurable hardware or a mixture of software and configurable hardware. For example, the FFT block 570 and the IFFT block 415 may be implemented with a configurable software algorithm, and the value of size N may be modified depending on the implementation.

[0064] Additionally, although the FFT and IFFT are described, this is for illustrative purposes only and should not be construed as limiting the scope of the present disclosure. Other types of transforms may be used, such as discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) functions. It can be understood that the value of the variable N may be any integer (e.g., 1, 2, 3, 4, etc.) for the DFT and IDFT functions, while the value of the variable N may be any integer that is a power of 2 (e.g., 1, 2, 4, 8, 16, etc.) for the FFT and IFFT functions.

[0065] While Figures 4-5 illustrate example wireless transmit and receive paths, various modifications may be made to Figures 4-5. For example, various components of Figures 4 and 5 may be combined, further subdivided, or omitted, and additional components may be added as needed. Also, Figures 4 and 5 are intended to illustrate example types of transmit and receive paths that may be used in a wireless network. Any other suitable architecture may be used to support wireless communications in a wireless network.

[0066] UL signals include data signals carrying information content, control signals carrying UL control information (UCI), DMRS associated with data or UCI demodulation, Sounding RS (SRS) that allows the gNB to perform UL channel measurements, and random access (RA) preambles that allow the UE to perform random access (see NR specifications). The UE transmits data information or UCI over a respective physical UL shared channel (PUSCH) or physical UL control channel (PUCCH). The PUSCH or PUCCH can be transmitted over a variable number of slot symbols, including one slot symbol. The gNB can configure the UE to transmit signals on the cell within the active UL BWP of the cell ULBW.

[0067] The UCI includes hybrid automatic repeat request acknowledgement (HARQ-ACK) information indicating correct or incorrect detection of a data transport block (TB) on the PDSCH, a scheduling request (SR) indicating whether the UE has data in the buffer, and a CSI report that allows the gNB to select appropriate parameters for PDSCH or PDCCH transmission to the UE. The HARQ-ACK information can be set in units smaller than the TB unit, and can be set in units of data code blocks (CBs) or data CB groups in which a data TB includes multiple data CBs.

[0068] The CSI report from the UE may include a channel quality indicator (CQI) that informs the gNB of a maximum modulation and coding scheme (MCS) for the UE to detect a data TB having a predetermined block error rate (BLER), for example, 10% BLER (see NR specifications), a precoding matrix indicator (PMI) that informs the gNB of a method of combining signals from multiple transmitter antennas according to a multiple-input multiple-output (MIMO) transmission principle, and a rank indicator (RI) that indicates the transmission rank of the PDSCH.

[0069] UL RS includes DMRS and SRS. DMRS is transmitted only in the BW of the respective PUSCH or PUCCH transmission. The gNB can demodulate the information in the respective PUSCH or PUCCH using the DMRS. SRS is transmitted by the UE to provide the gNB with UL CSI, and in the case of TDD systems, the SRS transmission can also provide PMI for DL ​​transmission due to channel reciprocity. The UE can also transmit a physical random access channel (PRACH as shown in the NR specification) to establish synchronization or initial upper layer connection with the gNB.

[0070] The antenna ports are defined such that the channel carried by a symbol on an antenna port can be inferred from the channel carried by other symbols on the same antenna port.

[0071] In the case of a DM-RS associated with a PDSCH, the channel carried by a PDSCH symbol on one antenna port can be inferred from the channel carried by a DM-RS symbol on the same antenna port, but only if the two symbols are within the same resource, the same slot, and the same physical resource block group (PRG) as the scheduled PDSCH.

[0072] In the case of a DM-RS associated with a PDCCH, the channel carrying the PDCCH symbol on one antenna port can be inferred from the channel carrying the DM-RS symbol on the same antenna port, but only if the two symbols are within resources where the UE can assume that the same precoding is used.

[0073] In the case of a DM-RS associated with a physical broadcast channel (PBCH), the channel carried by a PBCH symbol on one antenna port can be inferred from the channel carried by a DM-RS symbol on the same antenna port, but only if the two symbols are within an SS / PBCH block transmitted in the same slot and at the same block index.

[0074] Two antenna ports are quasi co-located if the large-scale attributes of the channel over which symbols on one antenna port are transmitted can be inferred from the channel over which symbols on the other antenna port are transmitted, where the large-scale attributes include any one or more of delay spread, Doppler spread, Doppler shift, average gain, average delay, and spatial Rx parameters.

[0075] The UE may also assume that SSBs transmitted at the same center frequency location and the same block index are quasi-co-located with respect to Doppler spread, Doppler shift, average gain, average delay, delay spread, and, if applicable, spatial Rx parameters. The UE may not assume quasi-co-located with respect to any other SS / PBCH block transmissions.

[0076] In the absence of CSI-RS configuration, unless otherwise configured, the UE may assume that the PDSCH DM-RS and SSB are quasi-co-located with respect to Doppler shift, Doppler spread, mean delay, delay spread, and, if applicable, spatial Rx parameters. The UE may also assume that the PDSCH DM-RS in the same CDM group are quasi-co-located with respect to Doppler shift, Doppler spread, mean delay, delay spread, and spatial Rx. The UE may further assume that the DMRS port associated with the PDSCH is a QCL with QCL type A, type D (if applicable) and average gain. The UE may further assume that the DM-RS does not collide with the SS / PBCH block.

[0077] The UE can be configured with a list of up to M TCI-state configurations in the higher layer parameter PDSCH-Config for decoding PDSCH by the UE and a detected PDCCH with DCI for a given serving cell, where M depends on the UE capability maxNumberConfiguredTCIstatesPerCC. Each TCI-State contains parameters for configuring a quasi-colocation (QCL) relationship between one or two downlink reference signals and the DMRS port of the PDSCH, the DMRS port of the PDCCH, or the CSI-RS port of the CSI-RS resources.

[0078] The quasi-co-location relationship is set by the upper layer parameters qcl-Type1 for the first DL RS and qcl-Type2 for the second DL RS (if set). In the case of two DL RSs, the QCL types may not be the same, whether they are for the same DL RS or different DL RSs. The quasi-co-location type corresponding to each DL RS is given by the upper layer parameter qcl-Type in QCL-Info and can take one of the following values: QCL-TypeA: {Doppler shift, Doppler spread, mean delay, delay spread}; QCL-TypeB: {Doppler shift, Doppler spread; QCL-TypeC: {Doppler shift, mean delay}; and QCL-TypeD: {Spatial Rx parameters}.

[0079] The UE receives a MAC-CE activation command to map [N] (e.g., N=8) TCI states to code points of the DCI field “Transmission Configuration Indication”. When a HARQ-ACK corresponding to a PDSCH carrying the activation command is transmitted in slot n, the indicated mapping between the TCI states and the code points of the DCI field “Transmission Configuration Indication” is updated after the MAC-CE application time, e.g.

number

[0080] Referring to UL power control, the UL power control procedure determines the power for PUSCH, PUCCH, SRS, and PRACH transmissions in NR.

[0081] When the UE transmits a PUSCH on an active UL BWP b of carrier f of serving cell c using a parameter set configuration of index j and a PUSCH power control adjustment state of index l, the UE shall set a PUSCH transmit power of dBm at PUSCH transmission opportunity i.

number

[0082]

number

number

[0083] The corresponding UL transmit power procedures for the PUCCH, SRS and PRACH cases and the respective use of the UE configured maximum output power to determine the PUCCH, SRS and PRACH transmit power settings are further described in REF4.

[0084] Referring to the UE configured maximum output power, the UE is allowed to set its configured maximum output power PCMAX,f,c for carrier f of serving cell c in each slot.

[0085] The configured maximum output power PCMAX,f,c is set within the following range as described in REF7: PCMAX_L,f,c≦PCMAX,f,c≦PCMAX_H,f,c, where PCMAX_L,f,c=MIN{PEMAX,c-ΔTC,c,(PPowerClass-ΔPPowerClass)-MAX(MAX(MPRc+ΔMPRc,A-MPRc)+ΔTIB,c+ΔTC,c+ΔTRxSRS,P-MPRc)} and PCMAX_H,f,c=MIN {PEMAX,c,PPowerClass-ΔPPowerClass}.

[0086] Here, PEMAX,c is a value that can be applied by REF6 among the higher layer provided parameter p-Max or the field additionalPmax of the higher layer provided NR-NS-PmaxList, and PPowerClass is the maximum UE power of the applicable UE power class specified in REF7 without taking into account the tolerance specified in REF7.

[0087] Higher layer provisions, e.g. the RRC configured parameter p-Max (range -30...33) can be used to limit the UE's UL transmit power on a carrier frequency and can also be used to calculate a compensation factor during cell (re)selection in RRC_IDLE and / or RRC_INACTIVE states. p-Max is the maximum transmit power allowed on the serving cell with a value in dBm. The maximum transmit power that the UE can use on the serving cell can be additionally limited by parameters p-NR-FR1 (configured for the cell group) and p-UE-FR1 (configured for all serving cells operating on FR1). If not present, the UE applies the maximum power according to REF7 in case of FR1 or FR2 cells.

[0088] For example, p-Max can be used by the network to provide and configure a value for the UE maximum transmit power for the UL carrier of the serving cell using uplinkConfigCommon or FrequencyInfoUL-SIB, and for the SUL carrier using supplementaryUplink, it can be used in SIB2 or SIB4 to configure the UE maximum transmit power applicable to neighboring NR cells in the frequency. For example, a value for the maximum total transmit power used by the UE in a NR cell group across all serving cells in p-NR-FR1, e.g., FR1 or p-UE-FR1, e.g., the maximum total transmit power used by the UE across all serving cells in FR1 across all cell groups, can be configured for the UE by the network using the RRC provisioned IE PhysicalCellGroupConfig.

[0089] Referring to power allocation in DL, the gNB determines the DL transmit energy per resource element (EPRE).

[0090] For cell search, the UE may assume that the SSS, PBCH DM-RS, and PBCH data have the same EPRE. The UE may assume that the ratio of PSS EPRE to SSS EPRE in the SS / PBCH block is 0 dB or 3 dB. If the UE is not provided with dedicated higher layer parameters, the UE may assume that the ratio of PDCCH DMRS EPRE to SSS EPRE is within -8 dB to 8 dB when the UE monitors the PDCCH for DCI format 1_0 with CRC scrambled by SI-RNTI, P-RNTI, or RA-RNTI.

[0091] For SS-RSRP, SS-RSRQ and SS-SINR measurements, the UE may assume that the DL EPRE is constant across the bandwidth. For SS-RSRP, SS-RSRQ and SS-SINR measurements, the UE may assume that the DL EPRE is constant across SSSs carried in different SS / PBCH blocks. For SS-RSRP, SS-RSRQ and SS-SINR measurements, the UE may assume that the ratio of SSS EPRE to PBCH DM-RS EPRE is 0 dB. For CSI-RSRP, CSI-RSRQ and CSI-SINR measurements, the UE may assume that the DL EPRE of a port in a CSI-RS resource configuration is constant across the configured DL bandwidth and across all configured OFDM symbols.

[0092] The DL SS / PBCH SSS EPRE can be derived from the SS / PBCH DL transmit power given by the parameter ss-PBCH-BlockPower in the range [-60...+50] dBm provided to the UE by higher layers. The DL SSS transmit power is defined as the linear average over the power contributions (in [W]) of all resource elements carrying the SSS within the operating system bandwidth.

[0093] DL CSI-RS EPRE may be derived from the SS / PBCH block DL transmit power given by parameter ss-PBCH-BlockPower and the CSI-RS power offset given by parameter powerControlOffsetSS provided by higher layers, where the CSI-RS is QCL with the SS / PBCH block, and the SS / PBCH block may be associated with the serving cell PCI or an additional PCI different from the serving cell PCI. The DL reference signal transmit power is defined as the linear average over the power contributions (in [W]) of the resource elements carrying the configured CSI-RS within the operating system bandwidth. The gNB may configure the UE with parameter powerControlOffsetSS using a value from the {-3,0,+3,+6} dB set that is the assumed ratio of NZP CSI-RS EPRE to SS / PBCH block EPRE. The network may configure the UE with a parameter powerControlOffset having a value in the range of [-8,15] dB, which is an assumed ratio of PDSCH EPRE to NZP CSI-RS EPRE, when the UE derives CSI feedback. The higher layer provided parameters powerControlOffsetSS and powerControlOffset may be signaled to the UE using the RRC NZP-CSI-RS-Resource IE. The DL CSI-RS EPRE may be derived from the SS / PBCH block DL transmit power given by the parameter ss-PBCH-BlockPower and the CSI-RS power offset given by the parameter powerControlOffsetSS provided by the higher layer, where the CSI-RS is the QCL with the SS / PBCH block, and the SS / PBCH block may be associated with the serving cell PCI or an additional PCI different from the serving cell PCI. The DL reference signal transmit power is defined as the linear average over the power contributions (in [W]) of the resource elements carrying the configured CSI-RS within the operating system bandwidth.

[0094] For other CSI measurements other than L1-SINR, the UE assumes that each NZP CSI-RS port configured for interference measurement corresponds to an interference transmission layer and considers the EPRE proportion associated with all interference transmission layers on the NZP CSI-RS port for interference measurement.

[0095] For DL ​​DM-RS associated with PDSCH, the UE can assume that the ratio of PDSCH EPRE to DM-RS EPRE (β_DMR [dB]) is given by REF4 depending on the number of DM-RS CDM groups without data as described in REF4. The DM-RS scaling factor β_PDSCH^DMRS specified in REF1 is given by β_PDSCH^DMRS=

[10] ^(-β_DMRS / 20).

[0096] When a UE is scheduled to one or two PT-RS ports associated with the PDSCH, if the UE is configured with the higher layer parameter epre-Ratio, the ratio of PT-RS EPRE to PDSCH EPRE per layer per RE for each PT-RS port (ρ_PTRS) is given by epre-Ratio in REF4, and the PT-RS scaling factor β_PTRS specified in REF1 is given by β_PTRS =

[10] ^(ρ_PTRS / 20), otherwise the UE is assumed to be set to state '0' if epre-Ratio is not configured.

[0097] In the case of link recovery, as described in REF3, the ratio of PDCCH EPRE to NZP CSI-RS EPRE is assumed to be 0 dB.

[0098] The UE assumes that a constant EPRE is used for all REs of a given DL PRS resource.

[0099] Referring to the power allocation in DL for the IAB node, in the case of the serving cell of the IAB-MT, the IAB-MT may be provided with a TCI state set or RS resource index set corresponding to the SS / PBCH block or CSI-RS resource index for the slot for which the PDSCH EPRE adjustment is indicated by the DL Tx power adjustment MAC CE as described in REF5. The PDSCH EPRE may be derived from the DL CSI-RS EPRE as described in REF4 and the PDSCH power offset provided by powerControlOffsetIAB as described in REF5. In the case of DL DM-RS and / or PT-RS associated with the PDSCH, the IAB-MT may assume that the ratio of PDSCH EPRE to DM-RS EPRE and / or PT-RS EPRE to PDSCH EPRE is obtained as described for "UE" in REF4. If the IAB-MT is not provided with a TCI state or RS resource index, the IAB-MT may assume that the same PDSCH EPRE adjustment applies to all TCI states or RS resource indexes configured for the IAB-MT. The PDSCH EPRE adjustment provided by the DL Tx Power Adjustment MAC CE may be restricted to frequency resources of the IAB-nodes where the IAB-MT and IAB-DU in a slot do not result in simultaneous reception on the same frequency resource.

[0100] 6 illustrates an example UL-DL frame configuration in a TDD communication system 600 according to an embodiment of the present disclosure. The embodiment of the UL-DL frame configuration in the TDD communication system 600 illustrated in FIG. 6 is for illustration purposes only. FIG. 6 does not limit the scope of the present disclosure to any particular implementation of the UL-DL frame configuration in the TDD communication system 600.

[0101] 5G NR radio supports time-division duplex (TDD) and frequency division duplex (FDD) operation. The use of FDD or TDD depends on the NR frequency band and country-specific allocations. TDD is required for most bands above 2.5 GHz. FIG. 6 illustrates an example structure of a slotted or single-carrier TDD UL-DL frame configuration for a TDD communication system according to an embodiment of the present disclosure.

[0102] A DDDSU UL-DL configuration is shown, where D denotes a DL slot, U denotes a UL slot, and S denotes a special or switching slot having a DL portion, a flexible portion that can also be used as a guard period (G) for DL-UL switching, and an optional UL portion.

[0103] TDD has several advantages over FDD. For example, the UE can be implemented more simply with TDD since no duplexer is required when using the same band for DL ​​and UL transmission. Another advantage is that time resources can be flexibly allocated to UL and DL considering asymmetric traffic ratios in both directions. Another advantage is that DL is typically allocated most of the time resources in TDD to handle DL-heavy mobile traffic. Channel state information (CSI) can be more easily obtained through channel reciprocity. This reduces the overhead associated with CSI reporting especially when there are many antennas or antenna elements.

[0104] Although there are advantages of TDD compared to FDD, there are also disadvantages. The first disadvantage is that the coverage of TDD is smaller because there are generally fewer time resources available for UL transmission. In contrast, in the case of FDD, all time resources are used for UL transmission. Another disadvantage is delay. In TDD, the timing gap between DL reception and UL transmission, including hybrid automatic repeat request acknowledgement (HARQ-ACK) information associated with the DL reception, is typically larger than in FDD, e.g., by several milliseconds. Thus, the HARQ round trip time in TDD is typically longer than the round trip time in FDD, especially when the DL traffic load is high. This increases the UL user plane delay in TDD and can cause data throughput loss or HARQ delay when the PUCCH providing the HARQ-ACK information needs to be repeatedly transmitted to improve coverage (the alternative in such cases is for the network to discard the HARQ-ACK information for at least some transmission blocks in the DL).

[0105] To address some of the shortcomings for TDD operation, dynamic link direction adaptation has been considered, allowing symbols in a slot to have flexible transmission directions, e.g., DL or UL, that the UE can determine by scheduling information for transmission or reception, except for some symbols in some slots that support pre-determined transmissions, such as SSB. The PDCCH can also be used to provide DCI formats, such as DCI format 2_0 described in REF2 and REF3, that can indicate the link directions of some flexible symbols in one or more slots. Nevertheless, in practical implementations, it is difficult for a gNB scheduler to adapt the transmission direction of a symbol without coordination with other gNB schedulers in the network. This is due, for example, to cross-link interference (CLI), where DL reception by a UE in a cell can be subject to significant interference from UL transmissions from other UEs in the same or adjacent cells.

[0106] Full-duplex (FD) communication offers the potential for increased spectrum efficiency, improved capacity, and reduced latency in wireless networks. When using FD communication, UL and DL signals are received and transmitted simultaneously on fully or partially overlapping or adjacent frequency resources, thereby improving spectrum efficiency and reducing latency in the user and / or control plane.

[0107] There are several ways to operate a full-duplex wireless communication system. For example, a single carrier can be used such that transmission and reception are scheduled on the same time-domain resource, such as a symbol or slot. Transmission and reception on the same symbol or slot can be frequency separated, for example, by organizing into non-overlapping sub-bands. In a time-domain resource that also includes a DL frequency sub-band, a UL frequency sub-band can be assigned to the center of the carrier, or to the edge of the carrier, or to a selected frequency-domain location of the carrier. The assignment of DL sub-bands and UL sub-bands can be partially or completely overlapped. A gNB can transmit and receive simultaneously on a time-domain resource using the same physical antenna, antenna port, antenna panel, and transmitter-receiver unit (TRX). Transmission and reception in FD can be performed using another physical antenna, port, panel, or TRX. The antennas, ports, panels, or TRXs can be further partially reused, or only a subset of each can be activated for transmission and reception when FD communication is enabled.

[0108] When a UE receives a signal / channel from a gNB in ​​a full-duplex slot, the reception may be scheduled in a DL sub-band of the full-duplex slot. When full-duplex operation at the gNB uses a DL slot to schedule a transmission from the UE with full-duplex transmission and reception at the gNB, there may be one or multiple, e.g., two, DL sub-bands in the full-duplex slot. When a UE is scheduled to transmit in a full-duplex slot, the transmission may be scheduled in a UL sub-band of the full-duplex slot. When full-duplex operation at the gNB uses a UL slot to schedule a transmission to the UE with full-duplex transmission and reception at the gNB, there may be one or multiple, e.g., two, UL sub-bands in the full-duplex slot. Full-duplex operation using a UL sub-band or a DL sub-band may be referred to as SBFD (Subband-Full-Duplex).

[0109] For example, when full-duplex operation at the gNB uses DL or F slots or symbols to schedule transmissions from the UE with full-duplex transmission and reception at the gNB, there may be one DL subband on a full-duplex slot or symbol and one UL subband on a full-duplex slot or symbol at the NR carrier. The frequency-domain configuration of the DL and UL subbands may be referred to as 'DU' or 'UD', respectively, depending on whether the UL subband is configured / indicated at the top or bottom of the NR carrier. In another example, when full-duplex operation at the gNB uses DL or F slots or symbols to schedule transmissions from the UE with full-duplex transmission and reception at the gNB, there may be two DL subbands and one UL subband on a full-duplex slot or symbol. The frequency-domain configuration of the DL and UL subbands may be referred to as 'DUD', when the UL subband is configured / indicated at a part of the NR carrier and the DL subband is configured / indicated at the edge of the NR carrier, respectively.

[0110] In the following, for simplicity, full-duplex slots / symbols and SBFD slots / symbols may be referred to as SBFD slots / symbols and non-full-duplex slots / symbols, and normal DL or UL slots / symbols may be referred to as non-SBFD slots / symbols.

[0111] Instead of using a single carrier, it is also possible to use different Component Carriers (CCs) for reception and transmission by the UE. For example, reception by the UE can occur on a first CC and transmission by the UE occurs on a second CC that has a small frequency separation from the first CC, e.g., zero.

[0112] The gNB can also operate in full-duplex mode when the UE is still operating in half-duplex mode, such that the UE can transmit and receive simultaneously or the UE is also capable of full-duplex operation.

[0113] Full duplex transmission / reception is not limited to gNBs, TRPs, or UEs, but rather can also be used for other types of wireless nodes such as relays or repeater nodes.

[0114] Full-duplex operation must overcome several issues to function in a practical implementation. When overlapping frequency resources are used, the received signal is subject to co-channel cross-link interference (CLI) and self-interference. Methods for eliminating CLI and self-interference include passive methods that rely on the isolation between the transmit and receive antennas, active methods that utilize RF or digital signal processing, and hybrid methods that use a combination of active and passive methods. Filtering and interference cancellation can be implemented in RF, baseband (BB), or both RF and BB. Mitigating co-channel CLI can require significant complexity at the receiver, but is feasible within current technological limits. Another aspect of FD operation is mitigating adjacent channel CLI, since in some cellular band allocations, different operators have adjacent spectrum.

[0115] In this disclosure, 'full-duplex (FD)' is used as an abbreviation for full-duplex operation in a wireless system. The terms 'cross-division-duplex (XDD)', 'full-duplex (FD)' and 'subband-full-duplex (SBFD)' may be used interchangeably in this disclosure.

[0116] Full-duplex operation in NR can improve spectrum efficiency, link robustness, capacity, and latency of UL transmission. In NR TDD systems, UL transmissions are limited by fewer available transmission opportunities than DL receptions. For example, for NR TDD with SCS=30 kHz, DDDU (2 msec), DDDSU (2.5 msec), or DDDDDDDSUU (5 msec), the UL-DL configuration allows a DL:UL ratio of 3:1 to 4:1. All UL transmissions can occur in a limited number of UL slots, e.g., every 2, 2.5, or 5 ms.

[0117] 7 illustrates an example UL-DL frame configuration in a full-duplex communication system 700 according to an embodiment of the present disclosure. The embodiment of the UL-DL frame configuration in the full-duplex communication system 700 shown in the figure is for illustration purposes only. FIG. 7 does not limit the scope of the present disclosure to any particular implementation of a UL-DL frame configuration in a TDD communication system 700.

[0118] FIG. 7 illustrates two example full-duplex configurations using single carrier and carrier aggregation UL-DL frame configurations according to an embodiment of the present disclosure.

[0119] For a single carrier TDD configuration with full duplex enabled, a slot labeled X is a full duplex or XDD slot. Both DL and UL transmissions can be scheduled in an XDD slot for at least one or more symbols. The term XDD slot is used to refer to a slot in which a UE can simultaneously receive and transmit in at least one or more symbols of the slot if radio resources are scheduled or allocated by the base station. A half duplex UE cannot simultaneously transmit and receive in an XDD slot or in the symbols of an XDD slot. If a half duplex UE is configured for transmission in the symbols of an XDD slot, other UEs can be configured for reception in the symbols of an XDD slot. A full duplex UE can simultaneously transmit and receive in the symbols of an XDD slot if there are scheduled or allocated resources for the other UE for DL ​​or UL in the symbols of the XDD slot. A transmission by a UE in the first XDD slot can use the same or different frequency-domain resources as the second XDD slot, and the resources can differ in bandwidth, first RB, or center carrier location.

[0120] In the case of a carrier aggregation TDD configuration with full duplex enabled, the UE receives in a slot on CC#1 and transmits in at least one or more symbols of a slot on CC#2. In addition to D slots used only for transmission / reception by the gNB / UE, U slots used only for reception / reception by the gNB / UE, and S slots to also support DL-UL switching, full duplex slots with both transmission / reception by the gNB or UE occurring on the same time-domain resource, such as a slot or symbol, are labeled X. For the example of TDD with SCS=30 kHz, a single carrier, and UL-DL allocation DXXSU (2.5 msec), the second and third slots allow full duplex operation. UL transmission can also occur in the last slot (U) where the entire UL transmission bandwidth is available. The XDD slot or symbol allocation and / or number of slots or symbols over a time period can be indicated by a DCI format in the PDCCH reception and can then vary per unit of the time period or can be indicated by higher layer signaling, for example, via MAC CE or RRC.

[0121] Various embodiments of the present disclosure recognize the issues when considering UL transmissions in a full-duplex capable wireless communication system. For example, in an NR TDD network supporting full-duplex or XDD operation, power allocation in the DL by a gNB and the determination of UL transmit power to a UE becomes significantly more challenging with the addition of more UL-DL and DL-UL interference paths during system operation.

[0122] 8 illustrates an example of transmitting and receiving in a full-duplex communication system 800 according to an embodiment of the present disclosure. The example embodiment of transmitting and receiving in a full-duplex communication system 800 shown in FIG. 8 is for illustration purposes only. FIG. 8 does not limit the scope of the present disclosure to any particular implementation of the example transmitting and receiving in a full-duplex communication system 800.

[0123] In FIG. 8, the NR TDD gNB uses a UL-DL frame allocation of type DXXSU with SCS=30 kHz and duration 2.5 msec. UE1, UE2, UE3, and UE4 are served by the gNB. Note that the timing advance settings TA1, TA2, TA3, TA4 for UE1, UE2, UE3, UE4 are determined based on the respective UE distances to the gNB. Transmission and reception from the gNB to UE1, UE2, UE3, UE4 are subject to polarized path delays (P1, P2, P3, P4) and attenuated by radio signal path losses (A1, A2, A3, A4), respectively. Full duplex communication is supported by the gNB and is enabled in the second and third slots. In this example, full duplex communication in the TDD cell is frequency-orthogonal sub-bands, e.g., DL transmission from the gNB to the UE in the SBFD DL sub-band and UL reception from the UE by the gNB in ​​the SBFD UL sub-band are not overlapped in the frequency domain. UL transmission in a full-duplex or SBFD slot can be assigned to the center subband in slots 2 and 3. UE1 to UE4 operate in half-duplex, i.e., they can transmit or receive in a slot, but simultaneous DL reception and UL transmission from the same UE cannot occur in a slot.

[0124] Since the relative distance from UE2 to the gNB is short, it results in a small TA2 value and a small attenuation value A2. Since UE1 is farther away from the gNB, it requires a larger TA1 value and experiences a larger attenuation value A1. UE3 and UE4 require timing advance values of TA2 < TA3 < TA4 < TA1 and experience attenuation values of A2 < A3 < A4 < A1. The interfering UL transmission from UE2 in the second XDD slot is received by UE1 earlier than the DL transmission from the gNB in the slot. The UL transmission from UE2 not only interferes with the PDSCH simultaneously transmitted by the gNB to UE1 in the second slot, but can also interfere with the symbol carrying the PDCCH at the start of the second slot. The arrival time of the interfering UL transmission from UE2 at the position of UE1 during DL reception by UE1 in the second slot is determined by three relative off-axis propagation delays, e.g., UE2-gNB (P2), UE1-gNB (P1), and UE2-UE1 (P21). The interfering UL transmission from UE2 at the position of UE1 during DL reception by UE1 in the second slot is affected by the attenuation value A21, e.g., the radio propagation loss of the UL transmission from the attacker UE2 when received at the position of the victim UE1.

[0125] Note that UL-DL interference also occurs in the second slot with sub-band full-duplex operation. The roll-off of the filtered Tx OFDM BB waveform from UE2 generates leakage over the entire channel BW including the SBFD DL sub-band used for DL reception by UE1 on the same time-domain resource. The guard RBs or guard tones or unused RBs or unused SCs between the SBFD UL and DL sub-bands in the second slot can mitigate the leakage generated by UL-DL interference from UE2 UL transmission but cannot completely remove it. The amount and severity of the leakage, as well as the impact on UE1 demodulation performance, are functions of the DL transmission power allocation (or EPRE) of the desired DL signal and the interfering UL signal, the DL reception power levels, the distance between the gNB and UE1, the UE2 UL transmission power (or EPRE), the distance between UE2 and UE1, and the amount of Tx and Rx filtering by UE1 and UE2.

[0126] When using existing UL transmission power control procedures, a single UE configured maximum output power value p-Max limits the UE's UL transmission power on a carrier frequency, e.g., in a serving cell. Additionally, a single value for p-NR-FR1 and / or p-UE-FR1 can be configured for the total maximum configured output power of the cell group of which the serving cell is a part, or for all cells configured for the UE in FR1. Similar considerations apply for operation in FR2 for the serving cell and cell group. As a result, the same UE configured maximum output power value P_("CMAX",f,c)(i) is used for UL transmission power control by the UE to determine the maximum transmission power value for PUSCH, PUCCH, SRS or PRACH in a subsequent transmission instance, regardless of slot type, e.g., normal UL slot or full duplex slot. For example, when p-Max configures a UE with a nominal output power of 23 dBm with RF tolerances and adjustments as described in REF3 and REF7, the UE will then transmit using the configured or allowed value of up to 23 dBm on the serving cell's time-domain resources, e.g., symbols of a slot, when scheduled.

[0127] It is necessary to separately control the maximum UE configured maximum output power between normal UL slots and full-duplex slots, and also for different full-duplex slots. One reason is that the maximum possible or permitted UL transmit power of a UE determines its interference range with respect to co-scheduled UEs in the same and neighboring cells. When the same maximum UE configured maximum output power setting is used by a UE for normal UL slots and full-duplex slots, the corresponding interference range of UL transmissions from the UE in these types of slots is also the same. In the case of full-duplex operation in the serving cell, it is highly desirable to limit the interference range of UE transmissions in UL using full-duplex slots compared to UL transmissions using normal UL slots. An attacker UE transmitting in UL using full-duplex slots will interfere with victim UEs receiving DL transmissions in the same serving cell and / or neighboring cells. An attacker UE transmitting in UL in normal UL slots will not interfere with DL transmissions to UEs in the same and neighboring cells, assuming the same TDD UL-DL frame configuration is configured for the TDD cells at configuration and the guard period is configured large enough. When the same maximum UE configured maximum output power per serving cell is used, for example, to control or limit the interference range of the UE resulting from UL transmission in a full duplex slot, the maximum possible or permitted transmit power of the UE in a normal UL slot is further reduced, which is obviously undesirable, since it would result in a reduction in the maximum UL radio range of the UE or the UE being unable to use its available UL transmit power, thus reducing the UL throughput and spectrum efficiency for UL transmission from the UE in a normal UL slot.

[0128] For transmission and reception in a full-duplex system, it must be considered that for gNB antenna panel design, UL reception in an overall, e.g., normal UL slot can use a different number of TRXs or a larger effective Rx area when compared to SBFD UL sub-bands in an XDD slot. Similar considerations apply to gNB DL transmission in an overall, e.g., normal, DL slot vs. XDD slot. For example, gNB Rx operation in a normal UL slot can use all 48 TRXs available in a 12Vx8Hx2P panel with a size of 40x60cm. gNB Rx operation in an XDD or full-duplex slot can use only 16 TRXs and 1 / 3 of the panel for Rx operation, while the remaining 32 TRXs and 2 / 3 of the panel can be used for simultaneous DL transmission. The gNB may experience less useful signal energy per UL symbol received in an XDD slot when compared to UL transmission by the UE in a normal UL slot. There may be less link gain when comparing UL reception in a full-duplex UL slot vs. a normal UL slot. When comparing DL transmissions for a UE using a normal DL slot that is the same as carrying SSB with DL transmissions for a UE using the SBFD DL sub-band of a full-duplex slot, similarly, different power allocation constraints and possible gain settings may be applied in different types of slots. Different antenna and panel designs exist to support gNB-side full-duplex operation. Design options can be expected to evolve over time as technology changes. Existing and anticipated future design options for antennas and panels have in common that the number of TRXs used for Tx and / or Rx in a normal DL or UL slot and the available Tx or Rx aperture area may not be the same as compared to DL transmission or UL reception in a full-duplex slot.

[0129] Hereinafter, unless otherwise specified, a higher layer providing a parameter value includes providing the parameter value via a system information block (SIB) such as SIB1, common RRC signaling, or UE-specific RRC signaling.

[0130] In the following, for the sake of brevity and clarity of description, the higher layer provided TDD UL-DL frame configuration is referred to as tdd-UL-DL-ConfigurationCommon as an example of an RRC common configuration and / or tdd-UL-DL-ConfigurationDedicated as an example of a UE-specific configuration. The UE determines the common TDD UL-DL frame configuration of the serving cell by receiving a system information block (SIB) such as SIB1 when accessing a cell from RRC_IDLE, or by common RRC signaling when the UE is configured to an Scell ​​or additional SCG by the IE ServingConfigCommon in RRC_CONNECTED. When the UE is configured to a serving cell, the UE determines, e.g., adds or modifies, the dedicated TDD UL-DL frame configuration using the IE ServingCellConfig, where the serving cell may be an SpCell or SCell of the MCG or SCG. The TDD UL-DL frame configuration uses at least one time-domain pattern with configurable periodicity to designate slots or symbols as one of types 'D', 'U' or 'F'.

[0131] Hereinafter, for the sake of brevity and clarity of explanation, the SFI is set using a higher layer provided IE such as slotFormatCombination or slotFormatCombinationsPerCell and is indicated to the UE by a group common DCI such as DCI F2_0. As an example, the slot format indicator is referred to, where slotFormats is defined in REF3.

[0132] In the following, for the sake of brevity and clarity of explanation, the term xdd-config is used to describe the configuration and parameterization for the UE determination of DL reception and / or UL transmission in a serving cell supporting full-duplex operation. It should be noted that the use of full-duplex operation by the gNB in ​​the serving cell when scheduling DL reception and / or UL transmission in a slot or symbol does not need to be identifiable or known by the UE. For example, parameters associated with xdd-config may include: a set of time-domain resources, e.g., symbols / slots, where DL reception or UL transmission is allowed, possible or not allowed; a range or set of frequency-domain resources, e.g., a set of serving cell, BWP, start and / or end or RB, where DL reception or UL transmission is allowed, possible or not allowed; one or more guard intervals for time-domain and / or frequency-domain radio resources between DL reception or UL transmission, e.g., guard SC or RB, guard symbols; one or more resource types, e.g., 'simultaneous Tx-Rx', 'Rx only', or 'Tx only' or 'D', 'U', 'F', 'N / A'; one or more scheduling behaviors, e.g., 'DG only', 'CG only', 'any'. The parameters associated with xdd-config may include instructions or values ​​for determining the (assumed) Tx power setting for DL ​​reception by the UE, e.g., reference power, EPRE, or power offset for a specified DL channel / or signal type; and for determining the UL transmit power and / or spatial setting by the UE. The settings and / or parameters associated with xdd-config may be provided to the UE using higher layer signaling, DCI-based signaling, and / or MAC CE-based signaling. For example, the parameters associated with xdd-config may be provided to the UE by common RRC signaling using SIB. In another example, the parameters associated with xdd-config may be provided to the UE by dedicated RRC signaling such as ServingCellConfig.For example, parameters associated with xdd-config may be provided using an RRC-configured TDRA table or a PUCCH configuration, and / or DCI-based signaling may indicate to the UE which configuration should be applied.

[0133] Various embodiments of the present disclosure provide a method for configuring multiple UE configured maximum output power values ​​for a serving cell using multiple higher layer provided p-Max power values ​​configured as absolute and / or peer value settings or provided as A-MPR values. The first and second UE configured maximum output power values ​​in the serving cell may be associated with first and second sets of slots.

[0134] The advantage is that the interference range of a UE transmitting on the UL using a full-duplex slot, e.g., TSG2, can be controlled differently by the gNB when compared to a UL transmission using a normal UL slot, e.g., TSG1, from the same UE. For an aggressor UE transmitting on the UL with little or no UL-DL interference path, higher UL radio range and higher UL throughput are still possible in a normal UL slot, when the UL transmit power from the aggressor UE's UL transmission in the full-duplex slot needs to be reduced to avoid affecting unnecessary interference levels to victim UEs co-scheduled or receiving from the DL portion of the full-duplex slot. Since the gNB knows the UE configured maximum output power value associated with the UL transmission from the aggressor UE in the slot on the serving cell, the gNB can adjust its receiver processing and UL power control for the aggressor UE accordingly.

[0135] In one embodiment, the UE determines first and second UE configured maximum output power values ​​P_("CMAX",f,c,1) and P_("CMAX",f,c,2) for carrier f of serving cell c. The first UE configured maximum output power value for the serving cell is associated with UL transmission of PUCCH, PUSCH, SRS or PRACH by the UE in a first slot set on the serving cell. The second UE configured maximum output power value for the serving cell is associated with UL transmission of PUCCH, PUSCH, SRS or PRACH by the UE in a second slot set on the serving cell. The first and second slot sets on the serving cell may be referred to as a first transmission slot group (TSG1) and a second transmission slot group (TSG2). For example, the first and second slot sets on the serving cell may be configured or indicated to the UE as corresponding to a first non-SBFD slot / symbol set and a second SBFD slot / symbol set, respectively. A UE can be configured with one or more transmission slot groups (TSGs) for a serving cell, where a TSG is a set of slots of the serving cell associated with the same UE configured maximum output power value. The first and second UE configured maximum output power values ​​associated with the UE UL transmit power of PUCCH, PUSCH, SRS, or PRACH in the TSG can be provided to the UE by higher layer signaling, e.g., by RRC or by MAC CE.

[0136] The UE may determine the UL transmission power of PUSCH, PUCCH, SRS, or PRACH in a slot using one of the first and second UE-configured maximum output power values ​​to determine the UL transmission power in each of the first and second slot sets. The first UE-configured maximum output power value may be used by the UE to determine the UL transmission power in the first type of slot, and the second UE-configured maximum output power value may be used by the UE to determine the UL transmission power in the second type of slot. For example, the first type of slot may correspond to UL transmission in a non-SBFD slot or a normal UL slot. For example, the second type of slot may correspond to UL transmission in an SBFD slot or an SBFD UL sub-band. The UE may determine the UL transmission power in a slot using parameters provided to determine values ​​for the first and second UE-configured maximum output power values, for example, the first UL transmission power in the first type of slot is determined by the UE using an absolute value, and the second UL transmission power in the second type of slot is determined as an offset value with respect to the UE-configured maximum output power value of the first slot type. Configuration parameters associated with the transmission slot group may be provided to the UE by pre-configuration or higher layer signaling such as RRC. A timer value, counter value, or priority indicator may be associated with the transmission slot group.

[0137] For example, the first and second UE configured maximum output power values ​​can be provided to the UE as two separate absolute values ​​p-Max1 and p-Max2, e.g., using respective value ranges of -30...33 dBm. For example, the first and second UE configured maximum output power values ​​p-Max1 and p-Max2 can be associated with respective first non-SBFD slot / symbol set and second SBFD slot / symbol set. The UE then uses p-Max1 for the first slot set and p-Max2 for the second slot set to determine the UE configured maximum output power for UL transmit power control as described by REF3 and REF7. Alternatively, the first and second values ​​can be provided as a first absolute value p-Max1 and a second peer offset delta_p-Max for the first absolute value, e.g., the second offset value can use an offset range of -15...0 dB compared to the first absolute value. The UE then uses p-Max1 for the first slot set and p-Max1+delta_p-Max for the second slot set to determine the UE configured maximum output power for UL transmit power control as described by REF3 and REF7. For example, the UE may determine UE configured maximum output power p-Max1 for UL transmission on the same non-SBFD slot / symbol as the normal UL slot or symbol. For example, the UE may determine UE configured maximum output power p-Max1+delta_p-Max for UL transmission in the SBFD UL subband or SBFD slot / symbol. In another alternative, the first and second UE configured maximum output power values ​​may be provided as peer offset values ​​delta_p-Max1 and delta_p-Max2 relative to the RRC configured p-Max value for the serving cell. The UE then uses p-Max+delta_p-Max,1 for the first slot set and p-Max+delta_p-Max,2 for the second slot set, respectively, to determine the UE configured maximum output power for UL transmit power control as described by REF3 and REF7.In yet another alternative, the first and second UE configured maximum output power values ​​can be provided as additional maximum power reduction values ​​A-MPR1 and A-MPR2 associated with the first and second slot sets of the serving cell. The UE then uses p-Max+A-MPR1 for the first slot set and p-Max+A-MPR2 for the second slot set to determine the UE configured maximum output power for UL transmit power control as described by REF3 and REF7. For example, the UE may determine the maximum output power value based on p-Max+A-MPR1 for UL transmission on non-SBFD slots / symbols and p-Max+A-MPR2 for UL transmission on SBFD slots / symbols or in the SBFD UL sub-band, respectively.

[0138] 9 illustrates an example of UE UL transmit power control with two configured maximum output power values ​​per serving cell with p-Max 900 according to an embodiment of the present disclosure. The embodiment of the example UE UL transmit power control with two configured maximum output power values ​​per serving cell with p-Max 900 illustrated in FIG. 9 is for illustration purposes only. FIG. 9 does not limit the scope of the present disclosure to any particular implementation of the example UE UL transmit power control with two configured maximum output power values ​​per serving cell with p-Max 900.

[0139] In one example shown in Figure 9, the UE is configured with first and second UE configured maximum output power values ​​p-Max1 and p-Max2 to determine first and second values, P_("CMAX",f,c,1) and P_("CMAX",f,c,2), for UL power control on carrier (f) of serving cell (c) in respective first and second slot sets. In this example, the UE is provided with a first (higher) configured maximum output power value p-Max1 for UL transmissions with normal UL slots, e.g., TSG1, and a second (lower) configured maximum output power value p-Max2 for UL transmissions in full duplex slots, e.g., TSG2.

[0140] 10 illustrates an example of UE UL transmit power control with two configured maximum output power values ​​per serving cell using p-Max and A-MPR 1000 according to an embodiment of the present disclosure. The embodiment of the UE UL transmit power control example with two configured maximum output power values ​​per serving cell using p-Max and A-MPR 1000 illustrated in FIG. 10 is for illustrative purposes only. FIG. 10 does not limit the scope of the present disclosure to any particular implementation of the UE UL transmit power control example with two configured maximum output power values ​​per serving cell using p-Max and A-MPR 1000. In another example as shown in Figure 10, the UE is configured with first and second UE configured maximum output power values ​​using the RRC configured p-Max value for UL transmission in the serving cell and additional maximum power reduction values ​​A-MPR1 and A-MPR2 associated with the first and second slot sets of the serving cell to determine first and second values, P_("CMAX",f,c,1) and P_("CMAX",f,c,2), for UL power control on carrier (f) of the serving cell (c) in the first and second slot sets, respectively. In this example, the UE is provided with a first (smaller) configured value A-MPR1 for UL transmission using normal UL slots, e.g., TSG1, and a second (larger) configured value A-MPR2 for UL transmission in full duplex slots, e.g., TSG2.

[0141] The advantage is that the interference range of a UE transmitting on the UL using a full-duplex slot, e.g., TSG2, can be controlled separately by the gNB when compared to a UL transmission using a normal UL slot, e.g., TSG1, from the same UE. When the UL transmit power from the aggressor UE's UL transmission in the full-duplex slot needs to be reduced to avoid unwanted interference levels affecting victim UEs that are co-scheduled or receiving from the DL portion of the full-duplex slot, higher UL radio range and higher UL throughput are still possible in normal UL slots for an aggressor UE transmitting on the UL with few UL-DL interference paths. Because the gNB knows the UE configured maximum output power value associated with the UL transmission from the aggressor UE in the slot on the serving cell, the gNB can adjust its receiver processing and UL power control for the aggressor UE accordingly.

[0142] The UE may be provided with first and second UE configured maximum output power values ​​for the serving cell. If only a single carrier is configured for the UE, first and second UE configured maximum output power values, e.g., p-Max1 for the first slot set and p-Max2 for the second slot set, are provided for that carrier. If carrier aggregation or dual connectivity is configured for the UE, multiple cell groups, such as MCG and / or SCG, may be configured for the UE. Each of the MCG and / or SCG may include one or more component carriers. Each of the cell groups configured for the UE may be configured with a parameter p-NR-FR1j (configured for the cell group) or all maximum output powers for all serving cells operating in FR1 may be provided to the UE with a parameter p-UE-FR1j, where j=1 or j=2, and possible different maximum power settings per cell group or for all serving cells operating in FR1 may be configured for the UE, e.g., j=1 for the first slot set and j=2 for the second slot set. Alternatively, the UE may be configured with the same maximum power setting per cell group or for all serving cells. The UE is provided with first and second UE configured maximum output power values ​​for component carriers. The same or different first and second UE configured maximum output power values ​​may be used by the UE to determine the UL transmit power of PUSCH, PUCCH, SRS or PRACH for multiple component carriers of the same configuration CG or when supplementary UL carriers are configured in the UE.

[0143] The maximum output power PCMAX,f,c,j set for j=1 or j=2 can be set within the following range: PCMAX_L,f,c,j≦PCMAX,f,c,j≦PCMAX_H,f,c,j, where PCMAX_L,f,c,j=MIN{PEMAX,c,j-ΔTC,c,j,(PPowerClass-ΔPPowerClass)-MAX(MAX(MPRc,j+ΔMPRc,j,A-MPRc,j)+ΔTIB,c,j+ΔTC,c,j+ΔTRxSRS,P-MPRc,j)} and PCMAX_H,f,c,j=MIN{PEMAX,c,j,PPowerClass-ΔPPowerClass}, using the notation of REF7. Note that one or more of the correction factors in the formula can have the same value for j=1 or j=2, or they can be determined differently. Here, PEMAX,c,j is a value that can be given by the higher layer provided parameter p-Maxj or the field additionalPmaxj of the higher layer provided NR-NS-PmaxList, and PPowerClass is the maximum UE power of the applicable UE power class.

[0144] The first and second UE configured maximum output power values ​​for the serving cell may be associated with UL transmission of PUCCH, PUSCH, SRS or PRACH by the UE in the first and second slot sets on the respective serving cells. Alternatively, the first and second UE configured maximum output power values ​​for the serving cell may be associated with UL transmission of a selected or associated UL signal or channel or transmission format of type PUCCH, PUSCH, SRS or PRACH. The first and second UE configured maximum output power values ​​for the serving cell may be associated with a first type of slot, e.g., slot of type 'U', and a second type of slot, e.g., slot of type 'D' or 'F'. For example, the first and second UE configured maximum output power values ​​for the serving cell may be associated with a first non-SBFD slot / symbol set based on a configuration or indication of the respective slot / symbol type 'U', and may be based on a second SBFD slot / symbol set based on a configuration or indication of the SBFD UL subband on the slot / symbol type 'D'. For example, a slot or symbol of type 'F' may be configured or indicated for use with a first or second UE configured maximum output power value.

[0145] When an UL transmission is scheduled in a slot of the serving cell, the UE determines the UL transmit power for a PUSCH, PUCCH, SRS, or RACH transmission instance in the serving cell using the provided maximum output power value for the associated UL slot. For example, for slots numbered 0 to 4 in the UL-DL frame configuration, if a first maximum output power value is associated with slot 4 and a second maximum output power value is associated with slots 1 and 2, the UE determines P_("CMAX",f,c,1) using the provided output power value for slot 4. The UE determines P_("CMAX",f,c,2) using the provided output power values ​​for slots 1 and 2.

[0146] When UL transmission is scheduled in a slot of the serving cell, the UE determines the UL transmit power for the PUSCH, PUCCH, SRS or RACH transmission instance in the serving cell using the maximum output power value provided for the associated slot type. For example, for a 'U' slot in the UL-DL frame configuration, if a first maximum output power value is associated with slot type 'U' and a second maximum output power value is associated with slot type 'D' or 'F', the UE determines P_('CMAX',f,c,1) using the provided output power value of slot type 'U'. The UE determines P_('CMAX',f,c,2) using the provided output power value of slot type 'D' or F.

[0147] Instead of UE configured maximum output power values ​​being provided for UL transmission of PUSCH, PUCCH, SRS or PRACH at slot intervals, UE configured maximum output power values ​​can be provided for symbol time intervals or multiples thereof. The time duration need not be the same for the first and second UE configured maximum output power values. The UE configured maximum output power values ​​can be defined in terms of an adjustable or scalable step size and / or desired signal power resolution. For example, the UE configured maximum output power values ​​can be provided as multiples of M dB, e.g., M=1. The resolution or step size for the first and second UE configured maximum output power values ​​may be selected to be the same or different.

[0148] The first and second UE configured maximum output power values ​​may be provided to the UE by RRC signaling messages and IEs. For example, without loss of generality, such values ​​may be signaled to the UE from the gNB as part of an RRC signaling message of type RRCSetup, RRCReconfiguration, SIB1 or SystemInformation, and may be included in an RRC IE of type ServingCellConfig, ServingCellConfigCommon, or ServingCellConfigSIB1 for the serving cell. The value for setting the maximum output power value for the UE may be of enumeration type, list type or sequence type, and / or may be encoded as a bit string. When no value is provided to the UE, the UE may select a default value for the maximum output power value. The default value for the maximum output power value may be the maximum UE transmit power as determined by the UE power class when the maximum output power is an absolute value. The default value for the maximum output power value may be 0 when the maximum output power in a slot is determined as a peer offset or A-MPR value with respect to p-Max.

[0149] A value for setting a maximum output power value for UL transmission by the UE associated with a set of time-domain resources can be provided to the UE for intra- or inter-frequency neighboring cells, e.g., using SIB2 or SIB4 when setting cell (re)selection parameters.

[0150] In another embodiment, the UE configured maximum output power value provided to the UE may be associated with a slot set of the serving cell. The slot sets of the serving cell for which the same maximum output power value is provided to the UE are referred to as a Transmission Slot Group (TSG) in the present disclosure. A first maximum output power value p-Max1 for the serving cell is associated with an UL transmission by the UE for a first slot set on the serving cell. A second UE maximum output power value p-Max2 for the serving cell is associated with an UL transmission by the UE for a second slot set on the serving cell. For example, the first and second UE configured maximum output power values ​​p-Max1 and p-Max2 may be associated with a first non-SBFD slot / symbol set and a second SBFD slot / symbol set, respectively. The first and second slot sets on the serving cell may be referred to as a first transmission slot group (TSG1) and a second transmission slot group (TSG2). A UE may be configured with one or more transmission slot groups (TSGs) for a serving cell, where a TSG is a set of slots of the serving cell associated with the same signaled maximum output power value. A TSG including a first number of slots may be referred to as a primary transmission slot group (PTSG), while the term secondary transmission slot group (STSG) may be used to refer to the other TSGs. For example, a PTSG may be associated with non-SBFD slots / symbols, and an STSG may be associated with each SBFD slot / symbol. For example, an STSG may be configured to include slots of type 'D' or 'F' in which UL transmissions from the UE in the SBFD UL subband may be scheduled, while a PTSG may be configured for UL transmissions from the UE in slots of type 'U'. A TSG may be configured to include only a single slot, or there may be only a single TSG, e.g., a TSG includes all slots. Then, the determination of UL transmit power by the UE in a slot may be described by not using the term "TSG" and substituting the term "slot" instead.When a TSG includes more than one slot, the slots of the TSG may be contiguous or non-contiguous. One or multiple TSGs may be configured for the UE by a parameter n-tsgList. For example, a first TSG including a first number of slots for UL transmission may be configured for the UE. A second TSG including a second number of slots for UL transmission may be configured for the UE. When a maximum output power value is provided for a TSG, the value is applied by the UE to determine the UL transmit power for slots in the TSG. The maximum output power value is not applied by the UE to determine the UL transmit power for a slot when the slot is not part of a TSG. One or multiple maximum output power values ​​may be associated with a TSG, for example, one or more values ​​may be provided to the UE and the UE selects one according to an appropriate set of rules and / or conditions.

[0151] For example, to configure a first and second slot set on a serving cell designated as transmission slot group 1 (TSG1) and transmission slot group 2 (TSG2), the configuration for n-tsgList can be provided as SEQUENCE of Tsg(SIZE(1..maxNrofTSGs)), where 'Tsg' is a bit string of size M. For example, M=5 or multiples thereof. When Tsg={01100}, the second and third slots or slots 1 and 2 in a sequence of 5 slots numbered 0 through 4 are part of the transmission slot group. When Tsg={00001}, only the last slot in a sequence of 5 slots is designated as part of the transmission slot group. A maximum output power value can then be associated with the transmission slot group.

[0152] 11 illustrates an exemplary UL Transmit Power MAC CE 1100 according to an embodiment of the present disclosure. The exemplary UL Transmit Power MAC CE 1100 embodiment shown in FIG. 11 is for illustration purposes only. FIG. 11 does not limit the scope of the present disclosure to any particular implementation of the exemplary UL Transmit Power MAC CE 1100.

[0153] In another embodiment, the first and second UE configured maximum output power values ​​associated with different transmission slot groups on the serving cell may be provided to the UE by the MAC CE, and instructions for updating the first and second maximum output power values ​​maintained by the UE for the serving cell may be provided to the UE in the same or different UL transmit power commands.

[0154] In one example shown in FIG. 11, the first and second UE configured maximum output power values ​​are adjusted by the UE using relative offset values ​​delta_p-Max1 and delta_p-Max2 compared to the RRC configured p-Max value for the serving cell. The relative offset values ​​delta_p-Max1 and delta_p-Max2 are provided to the UE with a new UL transmit power MAC CE. The MAC CE can have a length N=2 octets, or N for any desired number of octets or bits. The gNB transmits and the UE receives the MAC CE associated with the first and second maximum output power values ​​as part of the DL transmission. FIG. 11 illustrates an example of a length N=2 octet MAC CE format in which both the first and second peer offset values ​​delta_p-Max1 and delta_p-Max2 for the first and second slot sets are provided to the UE using the same MAC CE. The MAC CE can be identified by a selected LCID or a selected eLCID value or a combination of LCID and eLCID values. The MAC CE has a fixed size and consists of two octets. It includes a length field L with a size of 2 bits to indicate the number of peer offset values ​​delta_p-Maxj signaled in the sequence with the same MAC CE. Then the MAC CE includes two peer offset values ​​for delta_p-Max1 and delta_p-Max2 for the first and second slot sets respectively. Two reserved bits (R) are set to 0. The UE can determine the relative offset value from the index value in the Delta_p-Max_j field.

[0155] As can be appreciated, the naming or labeling of the new UL Transmit Power MAC CE format or included IEs for adjusting the UE's maximum output power in the serving cell's slot set is not important as long as they are distinct from the currently named IEs and parameterization provided by REF5. The new UL Transmit Power MAC CE may include additional fields not shown in the example provided by FIG. 11. The field length for signaling the maximum output power may be selected differently as a function of the step size, resolution and range required for the minimum or maximum value. The value may be signaled as an absolute maximum transmit power value or as a relative offset.

[0156] 12 illustrates an example method 1200 performed by a UE to determine a maximum output power for PUSCH transmission in a slot using p-Max according to an embodiment of the present disclosure. The embodiment of the example method 1200 performed by a UE to determine a maximum output power for PUSCH transmission in a slot using p-Max illustrated in FIG. 12 is for illustration only. FIG. 12 does not limit the scope of the present disclosure to any particular implementation of the example method 1200 performed by a UE to determine a maximum output power for PUSCH transmission in a slot using p-Max.

[0157] As illustrated in FIG. 12, a UE (such as UE 116) determines that a PUSCH transmission is scheduled in slot i. The UE determines a transmission slot group k of slot i for PUSCH transmission. The UE determines a maximum configured output power value p-Maxk for the transmission slot group k to which slot i is configured. The UE determines PCMAX,f,c,i using the selected p-Maxk. The UE determines a UL transmit power for PUSCH transmission in slot i as described in REF3 using the determined PCMAX,f,c,i value for slot i and applies the calculated UL transmit power value to the PUSCH transmission in slot i. The UE transmits the PUSCH in UL slot i.

[0158] 13 illustrates an example method 130 performed by a UE to determine a maximum output power for PUSCH transmission in a slot using p-Max and A-MPR according to an embodiment of the present disclosure. The embodiment of the example method 1300 performed by a UE to determine a maximum output power for PUSCH transmission in a slot using p-Max and A-MPR illustrated in FIG. 13 is for illustrative purposes only. FIG. 13 does not limit the scope of the present disclosure to any particular implementation of the example method 1300 performed by a UE to determine a maximum output power for PUSCH transmission in a slot using p-Max and A-MPR.

[0159] As illustrated in FIG. 13, a UE (such as UE 116) determines that a PUSCH transmission is scheduled in slot i. The UE determines a transmission slot group k of slot i for PUSCH transmission. The UE determines an offset value A-MPRk for the transmission slot group k to which slot i is configured. The UE determines a maximum output power value PCMAX,f,c,i using the absolute value p_Max configured for the serving cell and the selected offset value A-MPRk. The UE determines a UL transmit power for PUSCH transmission in slot i as described in REF3 using the determined PCMAX,f,c,i value for slot i and applies the calculated UL transmit power value to the PUSCH transmission in slot i. The UE transmits the PUSCH in UL slot i.

[0160] In NR TDD networks supporting full-duplex or XDD operation, the determination of DL power allocation by the gNB and UL transmit power for the UE becomes significantly more difficult due to the addition of more UL-DL and DL-UL interference paths during system operation. Although existing NR procedures provide the gNB scheduler with a lot of flexibility to select or adjust the actual selected DL transmit power allocation or EPRE of the DL signal or channel in the frequency-domain, e.g., over the DL channel BW, and in the time-domain, e.g., over symbols or slots according to various requirements, such an approach is insufficient in TDD systems using full-duplex operation.

[0161] When using existing NR procedures, if the NZP CSI-RS is configured with the CSI-RS bandwidth on symbols for CSI-based measurements, and if the UE implementation can benefit from the decoding assumptions when estimating the received signal level using the CSI-RS RE, the gNB may signal the parameter powerControlOffsetSS to the UE. The UE may calculate the assumed CSI-RS EPRE value for the SS / PBCH SSS EPRE.

[0162] However, the gNB determines the actual PDSCH EPRE or PDCCH EPRE for DL ​​transmission. The UE is not provided with a decoding assumption regarding the maximum or minimum, range or value set of the PDSCH EPRE used by the gNB in ​​a DL transmission instance, e.g., in a slot or symbol. The gNB may signal a parameter powerControlOffset to the UE. The UE may calculate an assumed ratio of the PDSCH EPRE to the NZP CSI-RS EPRE for the purpose of deriving and reporting CSI feedback. In slots where the NZP CSI-RS resource is configured and / or activated for CSI reporting to the UE, the assumed PDSCH EPRE may be set within a range of [-8, 15] dB with respect to the assumed CSI-RS EPRE using the provided parameter powerControlOffset. In slots where the NZP CSI-RS is not configured and / or activated, the UE may not make such an assumption regarding the actual PDSCH EPRE.

[0163] When the UE demodulates and / or decodes SI, paging or RAR from a serving cell, no decoding assumptions are provided regarding the maximum or minimum, range or value set of the PDCCH EPRE used by the gNB in ​​a DL transmission instance, e.g., slot or symbol, except in the case of cell search and reception of CORESET#0.

[0164] Various embodiments of the present disclosure recognize the problem of DL power allocation for PDSCH and PDCCH in a TDD cell supporting full duplex operation.

[0165] When using existing NR procedures, the gNB determines the actual PDSCH Tx EPRE or PDCCH Tx EPRE setting for DL ​​transmission according to its needs, even if the gNB is allowed to calculate the assumed ratio of PDSCH Rx EPRE to NZP CSI-RS Rx EPRE using the parameter powerControlOffset for the UE to derive and report CSI feedback. Therefore, the UE implementation must rely on AGC in the slot when receiving the PDCCH or PDSCH using a tracking signal, such as a set of 4 CSI-RS resources with row index 1 with REF1 set as TRS when present in the slot, using a known DMRS RE.

[0166] When considering full-duplex transmission and reception, different Tx EPRE settings need to be applied at the gNB when transmitting a PDSCH or PDCCH in the first (above the carrier BW) SBFD DL sub-band and the second (below the carrier BW) SBFD DL sub-band of a full-duplex slot, or when using the SBFD UL sub-band in a full-duplex slot (as when the UL sub-band is used for DL ​​transmission). Similar considerations apply when a PDSCH or PDCCH is transmitted using frequency-domain resources in both SBFD DL sub-bands and / or across the SBFD DL and SBFD UL sub-bands of a full-duplex slot.

[0167] One reason is that the number of TRXs and available Tx aperture area available to the gNB for DL ​​transmission in a normal DL slot may not be the same as compared to DL transmission in a full-duplex slot. Therefore, the difference in coupling loss between the gNB and the UE for DL ​​transmission using such different types of slots increases significantly compared to conventional TDD systems. Another reason is that even when digital BF is used, a different number of TRXs are available to the gNB for DL ​​beamforming operation in the first (top of the carrier BW) and second (bottom of the carrier BW) DL parts of a full-duplex slot, resulting in Tx power imbalance. Another reason is the existence of Tx-Rx interference cancellation at the gNB when operating in full duplex. Solutions for canceling co-channel cross-link interference (CLI) from a gNB-side DL transmitter can include passive methods that rely on antenna isolation between the transmit and receive antennas, active methods that utilize RF or digital signal processing, hybrid methods that use a combination of these, and filtering. For example, antenna SIC can be used to minimize leakage power from the Tx port to the Rx port, and digital SIC can be used to handle any residual interference after antenna SIC. DL out-band signal power flowing in the UL receiver path can be effectively suppressed below the noise floor level by the gNB to ensure UL receiver performance. Also, by combining digital pre-distortion (DPD) in the Tx path and digital SIC in the Rx path, out-band interference from DL signals to UL signals can be mitigated and the need for guard bands between UL and DL signals can be minimized. In particular, when implemented on the Tx side, such operation relies on high power electronic filtering components that are subject to maximum operating power constraints. For example, the yield and operational reliability of the Tx side filters impose maximum output power constraints for DL ​​gNB transmissions in a full duplex slot. Thus, the Tx EPRE of DL transmissions in a full duplex slot may not exceed the maximum power level.

[0168] When using existing NR procedures, therefore, DL signals and channels, e.g., DL transmissions of PDSCH and PDCCH to a UE may need to be constrained in full-duplex slots due to the significant variability of DL Tx EPRE in full-duplex systems. This can increase the complexity of UE-side AGC implementation to estimate and track DL received signal variations and / or greatly increase the need to configure DL tracking signals for DL ​​transmissions using normal DL and / or full-duplex slots / symbols, which reduces DL throughput or spectrum efficiency due to the need for additional overhead.

[0169] Various embodiments of the present disclosure recognize the issue of power allocation for DL ​​to CSI-RS in TDD cells supporting full duplex operation.

[0170] The starting position and number of RBs configured by the UE for the CSI frequency occupancy, e.g., channel state information measurement resources, e.g., NZP CSI-RS resources or CSI-IM resources, are provided to the UE using the higher-layer parameters freqBand and density in the CSI-RS-ResourceMapping IE for CSI resources in the CSI resource set as signaled by the CSI-ResourceConfig IE for the bandwidth portion. Similar considerations apply to the CSI-IM case. Similar considerations apply to the frequency occupancy when the CSI-RS is configured in the UE for mobility as signaled by the CSI-RS-CellMobility IE. The number of PRBs that the CSI resource spans is consecutive, allowing only multiples of 4. The smallest configurable number is the minimum value of 24 and the width of the associated BWP. If the configured value is greater than the width of the corresponding BWP, the UE may assume that the actual CSI-RS bandwidth is the same as the width of the BWP.

[0171] 14 illustrates an example of a CSI resource configuration in a full-duplex communication system 1400 according to an embodiment of the present disclosure. The example embodiment of a CSI resource configuration in a full-duplex communication system 1400 shown in FIG. 14 is for illustration purposes only. FIG. 14 does not limit the scope of the present disclosure to any particular implementation of the example CSI resource configuration in a full-duplex communication system 1400.

[0172] As illustrated in FIG 14, when using the existing NR procedure, the CSI resource can be configured to have a frequency occupancy located outside the UL subband of the full duplex slot, or can be configured to have a frequency occupancy that includes the entire SBFD UL subband of the full duplex slot, for example. Although not shown in FIG 14, partial overlap is also possible, for example, the CSI resource can be configured to have a frequency occupancy that includes a portion of the UL subband of the full duplex slot.

[0173] When considering full-duplex transmission and reception, a different CSI-RS Tx EPRE setting needs to be applied in the gNB when transmitting CSI-RS Re of a CSI-RS resource (or a CSI-RS resource set) from the SBFD DL sub-band of a full-duplex slot.

[0174] One reason is that even when digital BFs are used, different numbers of TRXs are available to the gNB for DL ​​beamforming operation in the first SBFD DL subband (top of the carrier BW) and the second SBFD DL subband (bottom of the carrier BW) of a full-duplex slot, resulting in Tx power imbalance. Another reason is the Tx-Rx interference cancellation operation at the gNB where DL and UL scheduling exist. Identical RB occupancy in the first and second DL parts of a full-duplex slot is not always possible due to varying UE traffic loads. Similarly, identical or balanced RB occupancy in the SBFD UL subband is not always possible. The Tx EPRE of a DL signal or channel can be adjusted by the gNB considering DL and / or UL scheduling in a full-duplex slot. However, the same Tx EPRE does not occur for the same DL signal transmitted in the first and second DL subband of a full-duplex slot. In the case of CSI-RS, the achievable measurement accuracy of UE CSI reporting or RRM measurement is also negatively affected because the UE is provided with a decoding assumption for estimating the received signal level using the CSI-RS RE, e.g., the UE assumes a single CSI-RS Rx EPRE value for the SS / PBCH SSS Rx EPRE for the entire configured frequency occupancy of the CSI resource. If multiple CSI-RS resources with frequency occupancy limited to the first or second SBFD DL subband or SBFD UL subband are used in a full-duplex slot (e.g., for use as an aperiodic CSI report when scheduling the SBFD UL subband for DL ​​transmission), the UE complexity is increased or CSI reporting is limited because more simultaneously active CSI configurations must be supported for UE operation in a full-duplex system, which is undesirable.

[0175] Various embodiments of the present disclosure recognize problems related to power allocation for DL ​​in a wireless communication system supporting full-duplex operation. Accordingly, various embodiments of the present disclosure provide a method for configuring and / or signaling to a UE an adjustable DL EPRE value for PDSCH, PDCCH or DMRS, PTRS in a slot configured for full-duplex operation as DL power adjustment. The UE then determines an assumed PDSCH, PDCCH or DMRS, PTRS power level for reception in a full-duplex slot using the DL reference power to adjust its receiver settings. Multiple CSI-RS EPRE values ​​can be configured for DL ​​reception by the UE and CSI reporting from the UE in a full-duplex slot on the same time-domain resource.

[0176] A configurable or indicated DL power adjustment value PA is provided to enable the UE to determine an adjusted or assumed PDSCH or PDCCH transmit or receive power level on a full-duplex or SBFD slot / symbol with respect to an appropriately selected DL reference signal and power level. For example, a DL SS / PBCH SSS EPRE or NZP CSI-RS EPRE can be selected as the DL reference signal or power level in the serving cell. For example, a configurable or indicated DL power adjustment value PA is provided with respect to a PDSCH or PDCCH configured for the UE in one or more slots where full-duplex operation using the same time-domain resource is supported. The DL power adjustment value PA can be associated with DL signals / channels of type PDSCH, PDCCH or DMRS, PTRS.

[0177] For example, multiple values ​​of configured or indicated DL power adjustment PA for PDSCH, PDCCH or DMRS, PTRS can be provided to the UE for different SBFD slots or symbols or different SBFD sub-bands on the same time-domain resource, or the same PA value can be configured for multiple SBFD slots or symbols or different SBFD sub-bands. For example, the DL power adjustment PA value for PDSCH, PDCCH or DMRS, PTRS can be associated with a PDSCH, PDCCH or DMRS, PTRS configuration, transmission duration or validity period. Different PDSCH, PDCCH or DMRS, PTRS configurations can have different associated DL power adjustment values, can have different associated transmission durations or validity periods, or the same DL power adjustment or transmission duration or validity period can be assumed by the UE. The same DL power adjustment value PA for PDSCH, PDCCH or DMRS, PTRS can be adjusted on SBFD slots or symbols, can be provided to multiple UEs to determine assumed DL power adjustments, or different PA values ​​can be provided for different UEs. One or multiple DL power adjustment values ​​PA may be configured for the same time-domain resource for PDSCH, PDCCH or DMRS, PTRS. The determination of the second DL power adjustment value PA2 by the UE may depend on and be a function of the first provided DL power adjustment value PA1, e.g., the UE determines PA2 as a peer value compared to PA1 or as an offset thereto. The PA values ​​including their associated slots, PDSCH, PDCCH or DMRS, PTRS configurations and / or validity periods may be provided to the UE by one or a combination of L1 control signaling via DCI, RRC signaling and / or configurations tabulated and / or listed by the system operation specification, or MAC CE signaling. If the same DL power adjustment value PA for PDSCH, PDCCH or DMRS, PTRS is provided to multiple UEs, a common DCI or a common RRC signaling message may be used.Dedicated or common type UE-specific DCI or RRC signaling can be used to provide the UE with a PA value. Only the first DL power adjustment value PA1 for the PDSCH, PDCCH, or DMRS, PTRS associated with the first DL transmission can be provided to the UE by DCI, while the second DL power adjustment value PA2 associated with the second DL transmission can be determined by the UE by RRC configuration, MAC CE signaling, or from a system specification. The PA value provided to the UE by RRC signaling can be used together with the MAC CE provided PA value (or index representation). The DL power adjustment value PA associated with DL reception of the PDSCH, PDCCH, or DMRS, PTRS in the serving cell can be determined by the UE by providing an index value through DCI signaling and selecting one or more entries from an RRC configurable table using the provided index value. The UE can determine a default value for the DL power adjustment value PA associated with the PDSCH, PDCCH, DMRS, PTRS in a slot. A DL reference signal or power level may be configured or indicated or provided as a reference to the UE for the assumed DL power adjustment of the PDSCH, PDCCH or DMRS, PTRS in the serving cell to be applied by the UE for reception of the PDSCH, PDCCH or DMRS, PTRS determined by the UE and / or a configurable DL power adjustment value PA. One or more DL reference signals or power levels may be configured for the UE. For DL ​​power adjustment of the PDSCH, PDCCH or DMRS, PTRS, the DL reference signal may be associated or linked with a TCI state or RS resource index corresponding to an SSB or CSI-RS resource index. The DL reference signal or power level may be configured or indicated to the UE to determine parameters for UL transmission in a full duplex slot.

[0178] In one embodiment, a configurable DL power adjustment PA is provided that enables the UE to determine an adjusted or assumed PDSCH, PDCCH, or DMRS, PTRS transmit or receive power level on the SBFD slots / symbols with respect to an appropriately selected DL reference signal and power level. For example, a configurable DL power adjustment PA may be provided for a PDSCH configured for the UE in one or more slots where full duplex operation using the same time-domain resources is supported. Although described using the case of a PDSCH in slots configured for full duplex operation, the same considerations in this disclosure apply to the case of a PDCCH or DMRS, PRTS by replacing the term "PDSCH" with "PDCCH", "DMRS" or "PTRS".

[0179] The UE is configured with a PDSCH EPRE for a full-duplex slot. Different full-duplex slots may be configured with different PDSCH EPRE or the same value for PDSCH EPRE may be configured for multiple full-duplex slots. For PDSCH reception in the first or second SBFD subband on a full-duplex slot / symbol, the UE may be provided with respective first and second PDSCH EPRE values. The first and second PDSCH EPRE values ​​may be the same or different values. The PDSCH EPRE value may be configured as a relative offset value in dB with respect to the SS / PBCH block EPRE value. Alternatively, the PDSCH EPRE may be configured as a relative offset value in dB with respect to the NZP CSI-RS EPRE value (assuming that the value range is sufficiently expanded compared to Rel-15). Alternatively, the PDSCH EPRE value in a full-duplex slot may be configured as an absolute value in dBm. When expressed in relative or absolute values, the PDSCH EPRE value may correspond to a maximum or minimum value or may correspond to a range of values ​​that the UE may assume for DL ​​reception in a full duplex slot or SBFD sub-band.

[0180] The PDSCH EPRE value may be defined for REs not used by DMRS or PTRS or NZP CSI-RS or for REs not used by PDSCH transmission, such as when RB-level or RE-level rate matching is configured. The UE decoding assumption for the PDSCH EPRE in a full-duplex slot or SBFD sub-band may be provided using the DMRS EPRE value set as a peer value or absolute value or as a value range, and the PDSCH EPRE value may then be fixed or within a known range of values ​​provided for the DMRS EPRE value. The PDSCH EPRE value may be provided or associated with a particular type of DL transmission from the gNB in ​​a full-duplex slot, such as associated with a modulation procedure, transmission scheme, resource allocation scheme, size, position, start and end of the PDSCH frequency allocation, number of symbols for the PDSCH time-domain allocation, DMRS mapping type or symbol allocation, TCI state, RS index, etc.

[0181] Two or more PDSCH EPRE values ​​can be configured or indicated for the same slot, e.g., a full-duplex slot. A first and a second PDSCH EPRE can be configured for PDSCH transmission, e.g., for a first SBFD DL sub-band (upper of the carrier BW) and a second SBFD DL sub-band (lower of the carrier BW) of each full-duplex slot, or one PDSCH ERPE value can be configured or indicated for DL ​​transmission to UEs using the SBFD DL sub-band and one for DL ​​transmission to UEs using the SBFD UL sub-band of a full-duplex slot or symbol.

[0182] 15 illustrates an example use of a configurable DL power adjustment value for a PDSCH in a full-duplex communication system 1500 according to an embodiment of the present disclosure. The example use embodiment of a configurable DL power adjustment value for a PDSCH in a full-duplex communication system 1500 illustrated in FIG. 15 is for illustration purposes only. FIG. 15 does not limit the scope of the present disclosure to any particular implementation of the example use embodiment of a configurable DL power adjustment value for a PDSCH in a full-duplex communication system 1500.

[0183] As shown in FIG. 15 for the exemplary case of PDSCH, the UE determines a DL reference power level for reception at the SBFD slot / symbol or at the SBFD subband using a DL reference signal. For example, the UE may use an SSB transmission from the gNB in ​​the illustrated first DL slot to determine a DL reference power for reception at the SBFD slot / symbol or at the SBFD subband on the slot / symbol using a DL SS / PBCH SSS EPRE. Alternatively, a NZP CSI-RS resource in the slot may be configured for the UE where a CSI-RS EPRE value is provided to the UE, and then a DL reference power level for reception at the SBFD slot / symbol or at the SBFD subband on the slot / symbol may be determined by the UE using the CSI-RS resource. A configurable DL power adjustment value PA may be applied by the UE for reception of the PDSCH, for example, with respect to the DL reference power level using the DL SS / PBCH SSS EPRE (or NZP CSI-RS EPRE). An SSB or CSI-RS index may be provided to the UE to determine a DL reference signal or reference power. The DL power adjustment value PA can be a positive or negative value, for example, the assumed or adjusted UE power adjustment of the PDSCH in a slot or symbol configured for full-duplex operation with respect to the DL reference power can be increased or decreased. If PA=0, the DL reference power of the DL reference signal can be applied.

[0184] In the case of PDCCH, DMRS or PTRS reception in slots configured for full-duplex operation, similar considerations may apply as illustrated by way of example for the PDSCH case in FIG.

[0185] A DL power adjustment value PA for PDSCH, PDCCH or DMRS, PTRS reception in an SBFD slot / symbol or SBFD subband of a slot or symbol, or a value associated therewith, may be provided to the UE using one or a combination of methods, for example, by DCI signaling, by RRC signaling, by MAC CE signaling, or the value may be tabulated and / or listed according to a system operation specification. For example, a DL power adjustment value for a DL channel or signal of type PDSCH, PDCCH or DMRS, PTRS may be signaled in a DL scheduling DCI using M bits, and the UE determines the DL power adjustment value PA from one of up to 2M values ​​tabled in the system specification using a DCI signaled index. In another example, for radio resources where full duplex operation is supported, for example, the DL power adjustment value for the PDSCH in the SBFD slot / symbol or SBF subband of the slot or symbol can be configured by the RRC parameter pdsch-TimeDomainAllocationList, e.g., indicating or a value associated with the DL power adjustment value PA is configured for a row of the TDRA table. The UE then determines the DL power adjustment value PA for the actual transmission from the RRC configuration table using the signaled index provided by the time-domain resource allocation field in the scheduling DCI. In another example, the DL power adjustment value for the PDSCH can be configured by the RRC parameter pdsch-Config, e.g., indicating or a value associated with the DL power adjustment value PA is configured for a possible time-domain resource allocation of the PDSCH.

[0186] A DL power adjustment value PA configured by the gNB for DL ​​transmission to the UE in the SBFD slot / symbol or SBFD sub-band of the slot or symbol, e.g., radio resources configured for full duplex operation, can be used by the gNB to adjust or limit the transmit power of a selected DL signal or channel. For example, without loss of generality, in the first 1 to 3 symbols of a full duplex slot, the PDCCH from the gNB is transmitted using a DL reference power, while in subsequent symbols of slot i, PDSCH transmission from the gNB to the UE applies the DL power adjustment value.

[0187] When the UE is provided with DL power adjustments PA for PDSCH, PDCCH or DMRS, PTRS reception in the SBFD subband of a slot or symbol at SBFD slot / symbol, the UE may assume that for the subcarrier spacing setting μ, the slots are numbered n_:“s”^μ∈{0,…,N_“slot”^(“subframe”,μ)-1} in increasing order within the subframe and n_“s,f”^μ∈{0,…,N_“slot”^(“frame”,μ)-1} in increasing order within the frame. There are N_symb^slot consecutive OFDM symbols in a slot, where N_symb^slot is defined in REF1 depending on the cyclic prefix. The start of slot n_“s”^μ in a subframe is aligned in time with the start of OFDM symbol n_s^μ N_symb^slot in the same subframe with respect to the DL reference signal determined by the UE. If the UE is provided with a DL power adjustment value PA, the UE may assume that OFDM symbol n_s^μ N_symb^slot of DL transmission starts according to the DL reference timing of the reference cell.

[0188] When a UE is provided with a DL power adjustment value PA to be applied to a PDSCH, PDCCH or DMRS, PTRS in an SBFD slot / symbol or SBFD subband of a slot / symbol of a serving cell, the UE may assume that the ratio of PDSCH, PDCCH or DMRS, PTRS EPRE to SS / PBCH SSS EPRE corresponds to the value PA provided in the associated transmission resource. For example, for slots numbered 0 to 4 in the UL-DL frame configuration shown in FIG. 15, if a DL power adjustment value PA1 is provided to the UE as a PDSCH EPRE Offset 1 value for PDSCH reception in slot 1, the UE adjusts the assumed DL power for PDSCH transmission using the symbol in slot 1 using the value PA1 with respect to the DL reference power. The UE then applies the determined DL power adjustment to its receiver, e.g., AGC, to demodulate and decode the PDSCH on the transmission resource scheduled in slot i. A subsequent PDSCH transmission to the UE in slot 2 may use a different DL power adjustment value PA2 provided as a PDSCH EPRE Offset 2. Thus, the UE adjusts the assumed DL power adjustment for the PDSCH in slot 2. The UE uses the DL power adjustment in slot 2 to determine its receiver processing settings, e.g., AGC, including the OFDM symbols scheduled for PDSCH reception in that slot, to demodulate and decode the PDSCH on the scheduled transmission resources.

[0189] For example, when a UE is configured for two DL carriers, e.g., configured for carrier aggregation or dual connectivity, the same DL power adjustment value PA can be applied to both DL carriers. For example, when a UE is configured for multiple DL BWPs for a serving cell and the UE is provided with a DL power adjustment value PA for an active BWP of the serving cell, the UE determines the assumed DL power adjustment of the PDCCH, PDSCH or DMRS, PTRS, e.g., radio resources configured for full duplex operation of the serving cell, at the SBFD slot / symbol or at the SBFD subband of the slot or symbol based on the value PA for the active DL BWP. The value for PA can be provided to the UE for an appropriate transmission duration. For simplicity in the explanatory portion of this disclosure, a slot is often used as an exemplary time unit, but instead of the value PA provided for a slot, the DL power adjustment value can be associated with a symbol time interval or multiples thereof. The DL power adjustment value PA may be associated with or defined for the same or an adjustable or scalable step size and / or a desired resolution. For example, the value of PA can be provided in units of dB (relative to a reference power level) or dBm (absolute power level).

[0190] When using a configurable DL power adjustment value PA at an SBFD slot / symbol or at an SBFD subband of a slot or symbol to set and provide an assumed power level of PDSCH, PDCCH or DMRS, PTRS for a UE in a cell to the UE, the transmit power level for PDSCH, PDCCH or DMRS, PTRS for the SBFD slot / symbol or for the SBFD subband of a slot or symbol can be selected by the gNB without adversely affecting the complexity or performance of the UE implementation.

[0191] In one example, the UE is configured with the PDSCH EPRE for a full-duplex slot or for a SBFD sub as a relative offset value in dB with respect to the SS / PBCH block EPRE or CSI-RS EPRE. For the serving cell, the UE may be provided with a set of TCI states or a set of RS resource indices corresponding to the SS / PBCH block or CSI-RS resource index in the slot for which the PDSCH EPR adjustment is provided as described in REF6. The PDSCH EPRE may be derived from the DL CSI-RS EPRE as determined using REF4 and the PDSCH power offset provided by the parameter powerControlOffsetPDSCH as described in REF6. In the case of DL DM-RS and / or PT-RS associated with the PDSCH, the UE may assume that the ratio of PDSCH EPRE to DM-RS EPRE and / or PT-RS EPRE to PDSCH EPRE is obtained as described in REF4. If the UE is not provided with a TCI state or RS resource index, the UE may assume that the same PDSCH EPRE adjustment applies to all TCI states or RS resource indexes configured for the UE. The PDSCH EPRE adjustment provided by powerControlOffsetPDSCH may be limited to transmission resources that are simultaneously received by the gNB using the same time-domain resources in a slot. Note that when CSI-RS EPRE is used, its offset range may be increased when compared to Rel-15 NR, which uses a range of, for example, the set {-15, -12, -9, -6, -3, 0, +3, +6} dB.

[0192] In another example, the UE is configured with the PDSCH EPRE for a full-duplex slot or SBFD sub-band of a slot or symbol as an absolute power value in dBm. For a serving cell, the UE may be provided with a set of TCI states or a set of RS resource indexes corresponding to SS / PBCH blocks or CSI-RS resource indexes in the slots for which the PDSCH EPRE transmit power is provided by higher layers. The UE may assume that a constant EPRE is used for all REs of the PDSCH resource allocation in the full-duplex slot or SBFD sub-band symbol. In the case of DL DM-RS and / or PT-RS associated with the PDSCH, the UE may assume that the ratio of PDSCH EPRE to DM-RS EPRE and / or PT-RS EPRE to PDSCH EPRE is obtained as described in REF4. If the UE is not provided with a TCI state or RS resource index, the UE may assume that the same PDSCH EPRE transmit power applies to all TCI states or RS resource indexes configured for the UE. The PDSCH EPRE transmission power provided by the higher layer can be limited by transmission resources that allow simultaneous reception by the gNB using the same time-domain resource in a slot.

[0193] FIG 16 illustrates an example method 1600 performed by a UE for using a configured DL power adjustment value for PDSCH reception in a full-duplex system according to an embodiment of the present disclosure. The embodiment of the example method 1600 performed by a UE for using a configurable DL power adjustment value for PDSCH reception in a full-duplex system shown in FIG 16 is for illustration only. FIG 16 does not limit the scope of the present disclosure to any particular implementation of the example method 1600 performed by a UE for using a configured DL power adjustment value for PDSCH reception in a full-duplex system.

[0194] As shown in FIG. 16, a UE (such as UE 116) determines a power level for DL ​​transmission of a PDSCH from a gNB in ​​slot i. The UE determines a DL reference power level using a selected SS / PBCH index of the serving cell. The UE is provided by RRC with a PDSCH EPRE for the full-duplex slot as a relative offset value in dB with respect to the SS / PBCH block EPRE. The UE receives DCI scheduling the PDSCH in the full-duplex slot. The UE determines an assumed PDSCH EPRE value for the PDSCH transmission from the SS / PBCH block EPRE and a configured powerControlOffsetPDSCH value. The UE determines adjusted receiver settings for the PDSCH using the assumed PDSCH EPRE value in the full-duplex slot. The UE adjusts its receiver processing with the adjusted receiver settings determined in the previous step. The UE receives the PDSCH transmission on the symbols assigned to the PDSCH transmission in the full-duplex slot using the adjusted receiver settings.

[0195] In one embodiment, values ​​associated with DL power adjustment values ​​PA that enable the determination of an adjusted or assumed PDSCH, PDCCH or DMRS, PTRS, CSI-RS transmit or receive power level at an SBFD slot / symbol or at an SBFD subband of a slot or symbol may be provided to the UE by MAC CE or RRC via L1 control signaling such as DCI. Although described using the case of a PDSCH in a slot configured for full duplex operation, the same considerations in this disclosure may be applied to the case of a PDCCH or DMRS, PRTS, CSI-RS by replacing the term "PDSCH" with "PDCCH", "DMRS", "PTRS", or "CSI-RS".

[0196] The gNB may configure an EPRE value or value range for the PDSCH, PDCCH, DMRS, PTRS, or CSI-RS for an SBFD slot or symbol or for an SBFD subband in a TDD cell supporting full duplex operation using RRC signaling, MAC CE, or DCI signaling. The UE may be provided with a minimum or maximum EPRE value or EPRE value range for the PDSCH, PDCCH, DMRS, PTRS, or CSI-RS. MAC CE or DCI signaling may indicate the EPRE value or range to the UE by indexing into an RRC configured set of possible EPRE values ​​or ranges.

[0197] In one example, a value for DL ​​power adjustment PA to determine an adjusted or assumed PDSCH, PDCCH or DMRS, PTRS, CSI-RS transmit or receive power level for a full duplex slot or symbol or for SBFD subbands of a slot or symbol may be provided to the UE by a higher layer, e.g., configured by RRC signaling. In case of PDSCH, the UE may be provided with a higher layer parameter powerControlOffsetPDSCH by RRC signaling and configuration. The parameter may be included in one or more signaling messages and / or IEs. For example, and without loss of generality, the parameter powerControlOffsetPDSCH may be signaled to the UE from the gNB as part of an RRC signaling message of type RRCSetup, RRCReconfiguration, SIB1 or SystemInformation and may be included in an RRC IE of type ServingCellConfig, ServingCellConfigCommon, ServingCellConfigSIB1 or PDSCH-Config, where the RRC configuration parameter may be encoded as an enumeration type, sequence type or sequence type, and / or bit string. Similar considerations apply in the case of PDCCH or DMRS, PTRS, CSI-RS.

[0198] In another example, a value for DL ​​power adjustment PA is provided to the UE in a new information field "PDSCH power offset" of size M bits in the DCI scheduling the PDSCH. The reason is that the gNB scheduler can set and signal to the UE the value of the applicable DL power adjustment for PDSCH transmission in a full duplex slot or SBFD subband when calculating the resulting PDSCH EPRE allocation applied by the gNB at runtime, e.g., when scheduling DL and UL transmissions in slots for a selected UE DL-UL pairing set. Upon receiving the DCI on the PDCCH, the UE can adjust its receiver processing accordingly, e.g., update the AGC setting for the PDSCH transmission received in the subsequent symbol.

[0199] Table 1 illustrates an example for a PDSCH power offset field using M=2 bits, where index j refers to the peer PDSCH EPRE offset value indicated in the slot. When the PDSCH power offset field signals a value 00, no DL power adjustment value PA is assumed by the UE for the SS / PBCH block EPRE, e.g., the UE may assume that the PDSCH transmission from the gNB uses a DL reference power. A value of 01 signals a DL power adjustment value PA of -3 dB. The UE may assume that the PDSCH DL transmission is reduced by about 3 dB compared to an offset, e.g., DL reference power, etc. The signaled peer PDSCH EPRE offset value may be provided or associated with a particular type of DL transmission, e.g., modulation procedure, transmission scheme, resource allocation scheme, size, position, start and end of the PDSCH frequency allocation, number of symbols for the PDSCH time-domain allocation, DMRS mapping type or symbol allocation, TCI state, RS index, etc., in a full duplex slot or in an SBFD subband.

[0200] (Table 1) Example of new index and field values ​​for "PDSCH power offset" when scheduling PDSCH in a full-duplex communication system

[0201] PDSCH power offset value

[0202] 00 0dB

[0203] 01 -3dB

[0204] 10 -6dB

[0205] 11 -12dB

[0206] Thus, any suitable range and resolution for the PDSCH power offset signaled in a full-duplex slot or SBFD sub-band can be selected without departing from the scope of the present disclosure. The range can include both positive and negative received DL power adjustment values ​​for the purpose of increasing or decreasing the indicated PDSCH power offset that the UE can assume in the SBFD slot / symbol or in the SBFD sub-band of the slot or symbol. There is no need for uniformity of resolution or resolution. The reason is to be able to cover the required range of DL power adjustments when adjusting the victim UE's power difference with a higher resolution in a value range that has a higher probability for the observed interference scenario experienced during system operation. Also, the PDSCH power offset in this example can be expressed for any suitable selected time unit, for example, for a slot, a scheduling interval, or one or more symbols. Instead of a new information field in the DCI scheduling the PDSCH, an existing field can be reused to provide an indication of the power adjustment value to the UE. In another example, an instruction for PDSCH power adjustment to determine a DL power adjustment value PA for one or more DL signals / channels can be sent via a group DCI instead of a DL assignment DCI for scheduling PDSCH reception. Reception using DL SPS can follow similar principles as described for the dynamic admission case. For example, a (de-)activation DCI can be used to provide a value for the indicated PDSCH power offset, or such a value can be configured by the RRC in the SPS configuration provided by a higher layer.

[0207] 17 illustrates an example method 1700 performed by a UE for using a DCI-signaled DL power adjustment in a full-duplex system according to an embodiment of the present disclosure. The embodiment of the example method 1700 performed by a UE for using a DCI-signaled DL power adjustment in a full-duplex system shown in FIG. 17 is for illustration only. FIG. 17 does not limit the scope of the present disclosure to any particular implementation of the example method 1700 performed by a UE for using a DCI-signaled DL power adjustment in a full-duplex system.

[0208] As shown in FIG. 17, a UE (such as UE 116) determines a power level for DL ​​transmission of a PDSCH from a gNB in ​​slot i. The UE determines a DL reference power level using a selected SS / PBCH index of the serving cell. The UE is configured by RRC for DCI reception including a 'PDSCH power offset' field for PDSCH scheduling. The UE receives a DCI scheduling a PDSCH in a full-duplex slot. The UE determines an assumed PDSCH EPRE value for the PDSCH transmission from the SS / PBCH block EPRE and the value indicated by the field PDSCH power offset of the scheduling DCI. The UE determines an adjusted receiver setting for the PDSCH using the assumed PDSCH EPRE value in the full-duplex slot. The UE adjusts its receiver processing with the adjusted receiver setting determined in the previous step. The UE receives the PDSCH transmission in the symbols allocated for the PDSCH transmission in the full-duplex slot using the adjusted receiver setting.

[0209] In one embodiment, a configurable peer DL power adjustment (PA) is provided that enables the UE to determine an adjusted or assumed ratio of PDCCH to PDSCH for PDSCH reception in an SBFD slot / symbol or in an SBFD subband of a slot or symbol. For example, a configurable peer DL power adjustment PA for PDSCH reception by the UE is provided to the UE with respect to the PDCCH for one or more SBFD slots or SBFD subbands in a slot or symbol in which the PDSCH can be received. A minimum, maximum or range of delta E PR of the PDCCH with respect to the PDSCH (or vice versa) can be configured in a normal DL slot or a full duplex slot.

[0210] In one example, the UE is configured with respect to the PDCCH EPRE for the SBFD subband of a full duplex slot or slot or symbol as a peer offset value in dB with respect to the DMRS configured for PDCCH reception in the CORESET and search space. For the serving cell, the UE may be provided with a set of TCI states or a set of RS resource indices in the slots for which PDSCH EPRE adjustment is provided as described in REF6. The PDSCH EPRE may be derived from the PDCCH EPRE as determined using REF3 and the PDSCH power offset provided by the parameter powerControlOffsetPDSCH as described in REF6. In the case of DL DM-RS and / or PT-RS associated with the PDSCH, the UE may assume that the ratio of PDSCH EPRE to DM-RS EPRE and / or PT-RS EPRE to PDSCH EPRE is obtained as described in REF4. If the UE is not provided with a TCI state or RS resource index, the UE may assume that the same PDSCH EPRE adjustment applies to all TCI states or RS resource indexes configured for the UE. The PDSCH EPRE adjustment provided by powerControlOffsetPDSCH may be limited to transmission resources that are simultaneously received by the gNB using the same time-domain resources in a slot.

[0211] 18 illustrates an example of multiple CSI-RS power adjustment values ​​per CSI resource in a full-duplex communication system 1800 according to an embodiment of the present disclosure. The embodiment of the example multiple CSI-RS power adjustment values ​​per CSI resource in a full-duplex communication system 1800 illustrated in FIG. 18 is for illustration purposes only. FIG. 18 does not limit the scope of the present disclosure to any particular implementation of the example multiple CSI-RS power adjustment values ​​per CSI resource in a full-duplex communication system 1800.

[0212] In one embodiment, the UE is provided with first and second CSI-RS EPRE values ​​for the same CSI resource or for the same CSI-RS resource in a full-duplex slot, for example, the first and second CSI-RS EPRE values ​​may be configured or indicated for a first SBFD DL sub-band (upper part of carrier BW) and a second SBFD DL sub-band (lower part of carrier BW) of each full-duplex slot or symbol, or the first CSI-RS EPRE value may be configured or indicated by the UE for CSI reporting for the NZP CSI-RS in the SBFD DL sub-band, and the second CSI-RS EPRE value may be configured or indicated to derive CSI reporting using the configured and / or activated NZP CSI-RS in the SBFD UL sub-band of the full-duplex slot or symbol.

[0213] As shown in FIG. 18, the UE determines the DL reference power level using the DL reference signal. For example, the UE may use the SSB transmission from the gNB in ​​the illustrated first DL slot to determine the DL reference power using the DL SS / PBCH SSS EPRE. For example, in a second slot configured for full-duplex operation, CSI resource (#1) is configured with limited frequency occupancy in the first (upper portion of carrier BW) SBFD DL sub-band in the slot. The NZP CSI-RS resource in the slot is configured with a single CSI-RS EPRE value provided by powerControlOffsetSS. For example, in a third slot configured for full-duplex operation, CSI resource (#2) is configured with frequency occupancy including the first (upper portion of carrier BW) SBFD DL sub-band in the slot and a portion of the second (lower portion of carrier BW) SBFD DL sub-band in the slot, including the UL sub-band. For channel occupancy of NZP CSI-RS resources in a slot, the UE is provided with first and second CSI-RS EPRE values ​​provided by parameters powerControlOffsetSS and powerControlOffsetSS2. The UE determines a hypothesized CSI RS EPRE value for the first SBFD DL subband for the SS / PBCH SSS EPRE using the first provided CSI-RS EPRE value from powerControlOffsetSS, and the UE determines a hypothesized CSI RS EPRE value for the second SBFD DL subband for the SS / PBCH SSS EPRE using the second provided CSI-RS EPRE value from powerControlOffsetSS2.

[0214] In one example, the UE is configured with first and second CSI-RS EPRE adjustment values ​​for full-duplex slots or symbols for the SS / PBCH block EPRE. For the serving cell, the UE may be provided with a set of TCI states corresponding to the SS / PBCH blocks for which CSI-RS EPRE adjustments are provided as described in REF6. When configured, the UE may be provided with parameters powerControlOffsetSS and powerControlOffsetSS2. The UE may calculate an assumed proportion of NZP CSI-RS EPRE for purposes of deriving and reporting CSI feedback using the provided parameter powerControlOffsetSS for RBs with configured CSI frequency occupancy greater than the highest RB indicated by the provided xdd-config and the provided parameter powerControlOffsetSS2 for RBs with configured CSI frequency occupancy less than the lowest RB indicated by the provided xdd-config. If a TCI state is not provided to the UE, the UE may assume that the same CSI-RS EPRE adjustment applies to all TCI states configured for the UE. The CSI-RS EPRE adjustment provided by powerControlOffsetSS or powerControlOffsetSS2 may be limited to transmission resources that are simultaneously received by the gNB using the same time-domain resources in a slot.

[0215] The flow charts illustrate exemplary methodologies that may be practiced in accordance with the principles of the disclosure, and various modifications may be made to the methodologies illustrated in the flow charts herein. For example, although shown as a series of steps, various stages in each figure may overlap, occur in parallel, occur in a different order, or occur multiple times. In other examples, stages may be omitted or replaced with other stages.

[0216] Although the drawings illustrate various different examples of user devices, various modifications to the drawings may be made. For example, a user device may include any number of each component in any suitable arrangement. In general, the drawings do not limit the scope of the present disclosure to any particular configuration. Also, although the drawings illustrate operating environments in which features of various user devices disclosed in this patent document may be used, these features may be used in any other suitable system.

[0217] Although the present disclosure has been described in exemplary embodiments, various changes and modifications may be suggested to those skilled in the relevant art. The present disclosure is intended to include such changes and modifications that fall within the scope of the appended claims. Nothing in this application should be construed as implying that a particular element, step or function is an essential element that must be included in the claims. The scope of patented subject matter is defined by the claims.

Claims

1. A method in a communication system that is performed by a UE (user equipment), The steps include receiving a first parameter set from the base station relating to a first downlink channel associated with a non-SBFD (non-subband full duplex) slot, The steps include receiving a second parameter set relating to a second downlink channel associated with an SBFD slot from the base station, Based on the SBFD slot, the steps include: confirming from the second parameter set a first power adjustment value related to the first subband of the SBFD slot, and a second power adjustment value related to the second subband of the SBFD slot; In the SBFD slot, the steps include receiving a signal on the second downlink channel in the first subband based on the first power adjustment value, A method characterized by comprising the step of receiving a signal on the second downlink channel in the second subband based on the second power adjustment value in the SBFD slot.

2. The first power adjustment value and the second power adjustment value are related to the EPRE (energy-per-resource element) offset value for the SS (synchronization signal) / PBCH (physical broadcast channel) block power, The first power adjustment value and the second power adjustment value relate to the DMRS (demodulation reference signal) RE (resource element) power or data RE power of the PDSCH (physical downlink shared channel) reception, or The method according to claim 1, characterized in that the first power adjustment value and the second power adjustment value are related to the CSI (channel state information) reference signal RE power.

3. A step of receiving a setting for a downlink reference signal including a reference signal power value, A step of confirming the received power for the second downlink channel in the first subband in the SBFD slot based on the first power adjustment value and the reference signal power value, The method according to claim 1, further comprising the step of confirming the received power for the second downlink channel in the second subband in the SBFD slot based on the second power adjustment value and the reference signal power value.

4. The step of determining the first power adjustment value and the second power adjustment value from the second parameter set based on the type of symbol on which the signal is received, The method according to claim 1, characterized in that the type of symbol is one of a downlink symbol, a flexible symbol, or an uplink symbol.

5. A UE (user equipment) in a communication system, At least one transceiver and, At least one processor that is communicatively connected to the at least one transceiver, Communicatively connected to the at least one processor, executable by the at least one processor individually or in any combination thereof, and the UE is The base station receives a first parameter set relating to the first downlink channel associated with a non-SBFD (non-subband full duplex) slot. The base station receives a second parameter set relating to the second downlink channel associated with the SBFD slot. Based on the SBFD slot, a first power adjustment value related to the first subband of the SBFD slot and a second power adjustment value related to the second subband of the SBFD slot are determined from the second parameter set. In the SBFD slot, based on the first power adjustment value, receive the signal on the second downlink channel in the first subband, In the SBFD slot, based on the second power adjustment value, the signal on the second downlink channel is received in the second subband. A UE characterized by including a memory for storing command words to do so.

6. The first power adjustment value and the second power adjustment value are related to the EPRE (energy-per-resource element) offset value for the SS (synchronization signal) / PBCH (physical broadcast channel) block power, The first power adjustment value and the second power adjustment value relate to the DMRS (demodulation reference signal) RE (resource element) power or data RE power of the PDSCH (physical downlink shared channel) reception, or The UE according to claim 5, characterized in that the first power adjustment value and the second power adjustment value are related to the CSI (channel state information) reference signal RE power.

7. Instructions that can be executed individually or in any combination by the at least one processor are, the UE, Receives settings for the downlink reference signal, including the reference signal power value. Based on the first power adjustment value and the reference signal power value, the received power for the second downlink channel in the first subband is checked in the SBFD slot. Based on the second power adjustment value and the reference signal power value, the received power for the second downlink channel in the second subband is confirmed in the SBFD slot. The UE according to claim 5, characterized in that it is configured to do so.

8. An instruction word that can be executed individually or in any combination by the at least one processor causes the UE to determine the first power adjustment value and the second power adjustment value from the second parameter set based on the type of symbol from which the signal is received, The UE according to claim 5, characterized in that the type of symbol is one of a downlink symbol, a flexible symbol, or an uplink symbol.

9. A method performed by a base station in a communication system, The steps include sending a first parameter set to the UE (user equipment) for a first downlink channel associated with a non-SBFD (non-subband full duplex) slot, The steps include transmitting a second parameter set relating to a second downlink channel associated with an SBFD slot to the aforementioned UE, Based on the SBFD slot, the steps include: confirming from the second parameter set a first power adjustment value related to the first subband of the SBFD slot, and a second power adjustment value related to the second subband of the SBFD slot; In the SBFD slot, the steps include transmitting a signal on the second downlink channel in the first subband based on the first power adjustment value, A method characterized by comprising the step of transmitting a signal on the second downlink channel in the second subband based on the second power adjustment value in the SBFD slot.

10. The first power adjustment value and the second power adjustment value are related to the EPRE (energy-per-resource element) offset value for the SS (synchronization signal) / PBCH (physical broadcast channel) block power, The first power adjustment value and the second power adjustment value relate to the DMRS (demodulation reference signal) RE (resource element) power or data RE power of the PDSCH (physical downlink shared channel) reception, or The method according to claim 9, characterized in that the first power adjustment value and the second power adjustment value are related to the CSI (channel state information) reference signal RE power.

11. The step of determining the first power adjustment value and the second power adjustment value from the second parameter set based on the type of symbol on which the signal is transmitted, The method according to claim 9, characterized in that the type of symbol is one of a downlink symbol, a flexible symbol, or an uplink symbol.

12. A base station in a communication system, At least one transceiver and, At least one processor that is communicatively connected to the at least one transceiver, Communicatively connected to the at least one processor, and executable by the at least one processor individually or in any combination thereof, the base station, Send the first parameter set for the first downlink channel associated with the non-SBFD (non-subband full duplex) slot to the UE (user equipment), The UE is sent a second parameter set relating to the second downlink channel associated with the SBFD slot. Based on the SBFD slot, a first power adjustment value related to the first subband of the SBFD slot and a second power adjustment value related to the second subband of the SBFD slot are determined from the second parameter set. In the SBFD slot, based on the first power adjustment value, a signal on the second downlink channel is transmitted in the first subband. In the SBFD slot, based on the second power adjustment value, the signal on the second downlink channel is transmitted in the second subband. A base station characterized by including a memory for storing command words to do so.

13. The first power adjustment value and the second power adjustment value are related to the EPRE (energy-per-resource element) offset value for the SS (synchronization signal) / PBCH (physical broadcast channel) block power, The first power adjustment value and the second power adjustment value relate to the DMRS (demodulation reference signal) RE (resource element) power or data RE power of the PDSCH (physical downlink shared channel) reception, or The base station according to claim 12, characterized in that the first power adjustment value and the second power adjustment value are related to the CSI (channel state information) reference signal RE power.

14. Instructions that can be executed individually or in any combination by the at least one processor cause the base station to determine the first power adjustment value and the second power adjustment value from the second parameter set based on the type of symbol on which the signal is transmitted. The base station according to claim 12, characterized in that the type of symbol is one of a downlink symbol, a flexible symbol, or an uplink symbol.

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