Terminal and base station in communication system and method executed by the same

Abstract

The present disclosure relates to communication technology and systems thereof that integrate IoT technology and fifth generation (5G) communication systems and support higher data transfer rates than fourth generation (4G) systems. The present disclosure can be applied to smart services based on 5G communication technology and IoT-related technologies, such as smart homes, smart buildings, smart cities, smart cars, connected cars, healthcare, digital education, smart retail, security and safety services. A method and apparatus for determining whether to perform transmission or reception. A method for a user equipment (UE) to determine whether to perform transmission, comprising: receiving a search space set n for receiving a physical downlink control channel (PDCCH) according to a common search space (CSS); and receiving a PDCCH including a downlink control information (DCI) format.

Description

Technical Field

[0001] The present disclosure relates generally to wireless communication systems and more particularly to transmission parameter adjustment in response to interference. Background Art

[0002] In order to meet the requirements of increasing wireless data services since the deployment of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. 5G or pre-5G communication systems are also called "super 4G networks" or "post-LTE systems". Therefore, 5G communication systems are considered to be implemented in higher frequency (mmWave) bands, for example, 60GHz bands, to achieve higher data rates. In order to reduce the propagation loss of radio waves and increase the transmission distance, beamforming, massive multiple input multiple output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and large antenna technologies in 5G communication systems are discussed. In addition, in 5G communication systems, development of system network improvements based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communications, wireless backhaul, mobile networks, collaborative communications, coordinated multi-point (CoMP), receiving-end interference elimination, etc. is underway. In 5G systems, hybrid FSK and FQAM modulation and sliding window superposition coding (SWSC) have been developed as advanced coded modulation (ACM), and filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA) and sparse code multiple access (SCMA) as advanced access technologies.

[0003] The Internet is a human-centered connectivity network where humans generate and consume information, and is now evolving into the Internet of Things (IoT), in which distributed entities such as things exchange and process information without human intervention. The Internet of Everything, which combines IoT technology and big data processing technology through connection with cloud servers, has emerged. In order to realize the IoT, technical elements such as "sensing technology", "wired / wireless communication and network infrastructure", "service interface technology", and "security technology" are required, and sensor networks, machine-to-machine (M2M) communication, machine-type communication (MTC), etc. have been studied recently. This IoT environment can provide intelligent Internet technology services to create new value for human life by collecting and analyzing data generated between connected things. Through the integration and combination between existing information technology (IT) and various industrial applications, IoT can be applied to various fields, including smart homes, smart buildings, smart cities, smart cars or connected cars, smart grids, health care, smart appliances, and advanced medical services.

[0004] In line with this, various attempts have been made to apply 5G communication systems to IoT networks. For example, technologies such as sensor networks, MTC, and M2M communications can be implemented through beamforming, MIMO, and array antennas. The application of cloud RAN, which is the above-mentioned big data processing technology, can also be considered as an example of the fusion between 5G technology and IoT technology.

[0005] An improved 5G communication system is needed. The 5G communication system can be implemented in higher frequency (millimeter wave) bands (e.g., 28 GHz band or 60 GHz band) to achieve higher data rates, or in lower frequency bands (e.g., below 6 GHz) to achieve robust coverage and mobility support. User equipment (UE) and base stations (BS) operating in the 5G system flexibly support multiple service / priority types associated with different reliability or latency requirements in the same downlink or uplink bandwidth portion. The 5G communication system also supports different transmission types corresponding to different requirements for latency and reception reliability, and avoiding or compensating for interference may be a key component in achieving these requirements. Summary of the invention

[0006] [Technical issues]

[0007] The present disclosure relates to a method and apparatus for adjusting transmission parameters in a communication system with multiple service / priority types.

[0008] [Technical solution]

[0009] In one embodiment, a method for a UE to determine whether to perform transmission is provided. The method includes: receiving a configuration of a search space set for receiving a physical downlink control channel (PDCCH) according to a common search space (CSS); and receiving a PDCCH including a downlink control information (DCI) format in the PDCCH. The method includes: determining a time resource set and a frequency resource set based on an indication in the DCI format; and canceling a sounding reference signal (SRS) transmission in a time resource from the time resource set based on determining that the SRS transmission will include frequency resources from the frequency resource set. The method also includes: sending a physical uplink control channel (PUCCH) in the time resources in the time resource set and the frequency resources in the frequency resource set.

[0010] In another embodiment, a UE is provided. The UE includes a receiver configured to: receive a configuration of a search space set for receiving a PDCCH according to a CSS; and receive a PDCCH including a downlink control information (DCI) format in the PDCCH. The UE includes a processor configured to: determine a time resource set and a frequency resource set based on an indication in the DCI format; and if the SRS transmission will include frequency resources from the frequency resource set, cancel the SRS transmission in the time resources from the time resource set. The UE also includes a transmitter configured to send a PUCCH in the time resources in the time resource set and the frequency resources in the frequency resource set.

[0011] In yet another embodiment, a BS is provided. The BS includes a transmitter configured to: transmit a configuration of a search space set for receiving a PDCCH according to a CSS and a PDCCH including a downlink control information (DCI) format in the transmission. The BS includes a processor configured to: determine a time resource set and a frequency resource set based on an indication in the DCI format; and if the SRS reception will include frequency resources from the frequency resource set, cancel the SRS reception in the time resources from the time resource set. The BS also includes a receiver configured to receive a PUCCH in a time resource in the time resource set and a frequency resource in the frequency resource set.

[0012] Other technical features may be apparent to those skilled in the art from the accompanying drawings and descriptions.

[0013] [Beneficial Effects]

[0014] Advantages and salient features of the disclosure will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses exemplary embodiments of the disclosure.

[0015] Therefore, the present invention can effectively perform transmission parameter adjustment in a communication system having multiple service / priority types. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] For a more complete understanding of the present disclosure and its advantages, reference is now made to the following description taken in conjunction with the accompanying drawings, wherein like reference numerals represent like parts:

[0017] Figure 1 illustrates an exemplary wireless network according to various embodiments of the present disclosure;

[0018] Figure 2A and Figure 2B An exemplary wireless transmission path and a wireless reception path according to various embodiments of the present disclosure are respectively shown;

[0019] Figure 3A An exemplary user equipment (UE) according to various embodiments of the present disclosure is shown;

[0020] Figure 3B An exemplary base station (BS) according to various embodiments of the present disclosure is shown;

[0021] Figure 4A An exemplary transmitter structure according to various embodiments of the present disclosure is shown;

[0022] Figure 4B An exemplary receiver structure according to various embodiments of the present disclosure is shown;

[0023] Figure 5A An exemplary encoding process of a downlink control information (DCI) format according to various embodiments of the present disclosure is shown;

[0024] Figure 5B An exemplary decoding process of a DCI format according to various embodiments of the present disclosure is shown;

[0025] Figure 6 FIG. 1 shows a method for determining a candidate PDCCH CCE of a DCI format in a corresponding CSS according to various embodiments of the present disclosure;

[0026] Figure 7 A method for determining PUSCH transmission power according to various embodiments of the present disclosure is shown;

[0027] Figure 8 A method of determining an MCS for PUSCH transmission according to various embodiments of the present disclosure is shown;

[0028] Fig. 9 A method for determining a cell for CG-PUSCH transmission according to various embodiments of the present disclosure is shown;

[0029] Fig.10 A method for determining transmission power according to various embodiments of the present disclosure is shown;

[0030] Fig.11 A method of resetting a closed loop power control (CLPC) parameter value according to various embodiments of the present disclosure is shown.

[0031] Fig.12 A method for determining whether to use a closed-loop power control parameter value to adjust transmission power according to various embodiments of the present disclosure is shown;

[0032] Fig.13 A method for sending a scheduling request (SR) according to various embodiments of the present disclosure is shown;

[0033] Fig.14A method for adjusting PUSCH transmission power according to various embodiments of the present disclosure is shown;

[0034] Fig.15 A method for adjusting PUSCH transmission power according to various embodiments of the present disclosure is shown;

[0035] Fig.16 A method for adjusting PUCCH transmission power according to various embodiments of the present disclosure is shown;

[0036] Fig.17 The process of transmitting PUCCH according to various embodiments of the present disclosure is shown;

[0037] Fig.18 The process of UE sending PUCCH according to various embodiments of the present disclosure is shown;

[0038] Fig.19 The process of UE sending PUCCH according to various embodiments of the present disclosure is shown;

[0039] Fig. 20 A method of transmitting a PUCCH according to various embodiments of the present disclosure is shown;

[0040] Fig.21 A method for determining a cell to transmit a CG-PUSCH according to various embodiments of the present disclosure is shown;

[0041] Fig. 22 A method of transmitting multiple CG-PUSCHs with the same TB on multiple cells according to various embodiments of the present disclosure is shown;

[0042] Fig.23 A method of adapting multiple symbols for CG-PUSCH transmission according to various embodiments of the present disclosure is shown;

[0043] Fig.24 A method of transmitting a GB-PUSCH in a symbol indicated as a DL symbol according to various embodiments of the present disclosure is shown; and

[0044] Fig.25 A method of determining whether to monitor a PDCCH of DCI format 2_4 in a time slot according to various embodiments of the present disclosure is shown. DETAILED DESCRIPTION

[0045] Before the following detailed description, it may be advantageous to set forth the definitions of certain words and phrases used throughout the patent document. The term "connection" and its derivatives refer to any direct or indirect communication between two or more elements, whether or not these elements are in physical contact with each other. The terms "send", "receive" and "communication" and their derivatives cover direct and indirect communication. The terms "include" and "comprise" and their derivatives are intended to include without limitation. The term "or" is inclusive, meaning and / or. The phrase "associated with..." and its derivatives mean to include, include within, interconnect with, include, include within, connect to or connect with, connect to or connect with, communicate with, collaborate with, interweave, parallel, approach, bind to or bind with, have, have the characteristics of, have... and... The relationship etc. of. The term "controller" refers to any device, system or part thereof that controls at least one operation. Such a controller can be implemented in hardware or a combination of hardware and software and / or firmware. Whether local or remote, the functions associated with any particular controller can be centralized or distributed. The phrase "at least one of," when used with a list of items, means that different combinations of one or more of the listed items may be used, and only one of the items in the list may be 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, and A, B, and C.

[0046] In addition, the various functions described below can be implemented or supported by one or more computer programs, each of which is formed by a computer-readable program code and implemented in a computer-readable medium. The terms "application" and "program" refer to one or more computer programs, software components, instruction sets, processes, functions, objects, classes, examples, related data or parts thereof that are suitable for implementation with suitable computer-readable program codes. The phrase "computer-readable program code" includes any type of computer code, including source code, object code and executable code. The phrase "computer-readable medium" includes any type of medium that can be accessed by a computer, such as a read-only memory (ROM), a random access memory (RAM), a hard drive, a compact disc (CD), a digital video disc (DVD) or any other type of memory. "Non-transitory" computer-readable medium excludes wired, wireless, optical or other communication links that transmit instantaneous electrical signals or other instantaneous signals. Non-transitory computer-readable media include media that can permanently store data, and media that can store data and then rewrite data, such as rewritable optical discs or erasable storage devices.

[0047] Definitions for certain other words and phrases are provided throughout this patent document. Those of skill in the art should understand that in many, if not most, instances, such definitions apply to prior and future uses of such defined words and phrases.

[0048] The following discussion Figures 1 to 25 , and the various embodiments used to describe the principles of the present disclosure in this patent document are only for illustration and should not be interpreted in any way as limiting the scope of the present disclosure. Those skilled in the art will understand that the principles of the present disclosure can be implemented in any appropriately arranged system or device.

[0049] Depending on the network type, the term "base station" may refer to any component (or set of components) configured to provide wireless access to a network, such as a transmission point (TP), a transmission-reception point (TRP), a gNB, a macro cell, a femto cell, a WiFi access point (AP), or other wireless enabling device. A base station may provide wireless access according to one or more wireless communication protocols, for example, 5G3GPP New Radio Interface / Access (NR), Long Term Evolution (LTE), Advanced LTE (LTE-A), High Speed ​​Packet Access (HSPA), Wi-Fi 802.11a / b / g / n / ac, etc. The terms "gNB" and "TRP" may be used interchangeably in the present disclosure to indicate a network infrastructure component that provides wireless access to a remote terminal. In addition, depending on the network type, the term UE may refer to any component, such as a mobile station, a subscriber station, a remote terminal, a wireless terminal, a reception point, or a user equipment. A UE may be a mobile device or a fixed device.

[0050] In order to meet the demand for increased wireless data services since the deployment of 4G communication systems, efforts have been made to develop improved 5G communication systems or pre-5G communication systems. Therefore, 5G communication systems or pre-5G communication systems are also called "super 4G networks" or "post-LTE systems."

[0051] 5G communication systems can be implemented in higher frequency (millimeter wave) bands, such as 28 GHz or 60 GHz bands, or generally in bands above 6 GHz to achieve higher data rates, or in lower frequency bands such as below 6 GHz to achieve robust coverage and mobility support. In order to reduce the propagation loss of radio waves and increase transmission coverage, beamforming, massive multiple-input multiple-output (MIMO), full-dimensional MIMO (FD-MIMO), array antennas, analog beamforming, large antenna technology, etc. are discussed in 5G communication systems. .

[0052] In addition, in the 5G communication system, system network improvements are being developed based on advanced small cells, cloud radio access networks (RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul communication, mobile networks, collaborative communications, coordinated multi-point (CoMP) transmission and reception, interference mitigation and elimination, etc.

[0053] Figure 1 An example wireless network 100 is shown in accordance with various embodiments of the present disclosure. Figure 1 The embodiment of the wireless network 100 shown is for illustration only. Other embodiments of the wireless network 100 may be used without departing from the scope of the present disclosure.

[0054] The wireless network 100 includes BS101, BS102, and BS103. BS101 communicates with BS102 and BS103. BS101 also communicates with at least one Internet Protocol (IP) network 130, such as the Internet, a private IP network, or other data network. Optional terms such as "eNB" (enhanced Node B) or "gNB" (general Node B) may be used instead of "BS". Depending on the type of network, other well-known terms may be used instead of "gNB" or "BS", such as "base station" or "access point". For convenience, the terms "gNB" and "BS" are used in this disclosure to refer to network infrastructure components that provide wireless access to remote terminals. Depending on the type of network, other well-known terms may be used instead of "user equipment" or "UE", such as "mobile station", "user station", "remote terminal", "wireless terminal" or "user device". For convenience, the term "user equipment" or "UE" is 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 a fixed device (e.g., a desktop computer or a vending machine).

[0055] gNB 102 provides wireless broadband access to network 130 for a first plurality of UEs within coverage area 120 of gNB 102. The first plurality of UEs include UE 111, UE 112, UE 113, UE 114, UE 115, and UE 116, wherein UE 111 is located in a small business SB, UE 112 may be located in an enterprise (E), UE 113 may be located in a WiFi hotspot HS, UE 114 may be located in a first residence (R), UE 115 may be located in a second residence (R), and UE 116 may be a mobile device (M) such as a cellular phone, a wireless laptop computer, a wireless PDA, etc. gNB 103 provides wireless broadband access to network 130 for a second plurality of UEs within coverage area 125 of gNB 103. The second plurality of UEs include UE 115 and UE 116. In some embodiments, one or more of gNBs 101 to 103 may communicate with each other and with UEs 111 to 116 using 5G, LTE, LTE-A, WiMAX, or other advanced wireless communication technologies.

[0056] The dashed lines illustrate the approximate extents of coverage areas 120 and 125, which are shown as approximately circular for purposes of illustration and explanation only. For example, coverage areas associated with gNBs, such as coverage areas 120 and 125, may have other shapes, including irregular shapes, depending on the configuration of the gNB and changes in the radio environment related to natural and man-made obstacles.

[0057] As described in more detail below, one or more of gNB 101, gNB 102, and gNB 103 may adjust transmission parameters to UE 111 to UE 116 in response to interference as described in embodiments of the present disclosure. In various embodiments, one or more of UE 111 to UE 116 may adjust transmission parameters to gNB 101 to gNB 103 in response to interference as described in embodiments of the present disclosure.

[0058] As described in more detail below, transmissions between one or more of UEs 111 to 116 and gNBs 101 to 103 operating in a 5G system may be subject to interference. Accordingly, various embodiments of the present disclosure enable UEs 111 to 116 and gNBs 101 to 103 to adjust 215 parameters of one or more transmissions in response to interference in a communication system having multiple service / priority types.

[0059] although Figure 1 An example of a wireless network 100 is shown, but may be Figure 1Various changes may be made. For example, wireless network 100 may include any number of gNBs and any number of UEs, arranged appropriately in any manner. gNB 101 may communicate directly with any number of UEs and provide wireless broadband access to network 130 to these UEs. Similarly, each gNB 102 and gNB 103 may communicate directly with network 130 and provide direct wireless broadband access to network 130 to the UEs. In addition, gNB 101, gNB 102, and / or gNB 103 may provide access to other or additional external networks (such as other types of data networks).

[0060] Figure 2A and Figure 2B An exemplary wireless transmit path and wireless receive path according to the present disclosure are shown respectively. In the following description, the transmit path 200 may be described as being implemented in a gNB (such as gNB 102), and the receive path 250 may be described as being implemented in a UE (such as UE 116). However, it should be understood that the receive path 250 may be implemented in a gNB (such as gNB 102), and the transmit path 200 may be implemented in a UE (such as UE 116). In some embodiments, as described in various embodiments of the present disclosure, the receive path 250 is configured to receive channel and interference measurement information.

[0061] The transmit path 200 includes a channel coding and modulation block 205, a serial to parallel (S to P) block 210, an inverse fast Fourier transform (IFFT) block of size N 215, a parallel to serial (P to S) block 220, a "cyclic prefix addition" block 225, and an upconverter (UC) 230. The receive path 250 includes a downconverter (DC) 255, a "cyclic prefix removal" block 260, a serial to parallel (S to P) block 265, a fast Fourier transform (FFT) block of size N 270, a parallel to serial (P to S) block 275, and a channel decoding and demodulation block 280.

[0062] In the transmit path 200, the channel coding and modulation block 205 receives a set of information bits, applies coding (such as convolution, Turbo, or low-density parity check (LDPC) coding) to the input bits, and modulates (such as with quadrature phase shift keying (QPSK) or quadrature amplitude modulation (QAM)) to generate a sequence of frequency-domain modulation symbols. The S to P block 210 converts (such as demultiplexes) the serial modulation symbols into parallel data to generate N parallel symbol streams, where N is the IFFT / FFT size used in the gNB 102 and UE 116. The size-N IFFT block 215 performs an IFFT operation on the N parallel symbol streams to generate a time-domain output signal. The P to S block 220 converts (such as multiplexes) the parallel time-domain output symbols from the size-N IFFT block 215 to generate a serial time-domain signal. The "cyclic prefix addition" block 225 inserts a cyclic prefix into the time-domain signal. UC 230 modulates (such as up-converts) the output of the "Cyclic Prefix Add" block 225 to an RF frequency for transmission via a wireless channel. The signal may also be filtered at baseband before being converted to RF frequency.

[0063] The transmitted RF signal from gNB 102 arrives at UE 116 after passing through the wireless channel, and the reverse operation of the operation at gNB 102 is performed at UE 116. DC 255 down-converts the received signal to baseband frequency, and the "Remove Cyclic Prefix" block 260 removes the cyclic prefix to generate a serial time-domain baseband signal. Serial to Parallel block 265 converts the time-domain baseband signal into parallel time-domain signals. FFT block 270 of size N performs an FFT algorithm to generate N parallel frequency-domain signals. Parallel to serial block 275 converts the parallel frequency-domain signals into a sequence of modulated data symbols. Channel decoding and demodulation block 280 demodulates and decodes the modulated symbols to recover the original input data stream.

[0064] As described in more detail below, transmit path 200 or receive path 250 may adjust transmission parameters in response to interference. Each of gNB 101 to gNB 103 may implement transmit path 200 similar to transmitting in the downlink to UE 111 to UE 116 and may implement receive path 250 similar to receiving in the uplink from UE 111 to UE 116. Similarly, each of UE 111 to UE 116 may implement transmit path 200 for transmitting in the uplink to gNB 101 to gNB 103 and may implement receive path 250 for receiving in the downlink from gNB 101 to gNB 103.

[0065] Figure 2A and Figure 2BEach component in may be implemented using hardware only or a combination of hardware and software / firmware. As a specific example, Figure 2A and Figure 2B At least some of the components in can be implemented with software, while other components can be implemented by configurable hardware or a combination of software and configurable hardware. For example, the FFT block 270 of size N and the IFFT block 215 of size N can be implemented as a configurable software algorithm, wherein the value of size N can be modified according to the implementation.

[0066] In addition, although described as using FFT and IFFT, this is illustrative only and should not be construed as limiting the scope of the present disclosure. Other types of transforms such as discrete Fourier transform (DFT) and inverse discrete Fourier transform (IDFT) functions may be used. It is to be understood that for DFT and IDFT functions, the value of variable N may be any integer (e.g., 1, 2, 3, 4, etc.); and for FFT and IFFT functions, the value of variable N may be any integer that is a power of 2 (e.g., 1, 2, 4, 8, 16, etc.).

[0067] although Figure 2A and Figure 2B An example of a wireless transmission path and a wireless reception path is shown, but the Figure 2A and Figure 2B Make various changes. For example, Figure 2A and Figure 2B The various components in may be combined, further subdivided, or omitted, and additional components may be added according to specific needs. Figure 2A and Figure 2B It is intended to illustrate examples of various types of transmit paths and receive paths that may be used in a wireless network.Other suitable architectures may be used to support wireless communications in a wireless network.

[0068] Figure 3A An exemplary UE according to the present disclosure is shown. Figure 3A The embodiment of UE 116 shown is for illustration only, and Figure 1 UE 111 to UE 115 may have the same or similar configuration. However, UE has various configurations, and Figure 3A The scope of the present disclosure is not limited to any particular implementation of a UE.

[0069] UE 116 includes antenna 305, radio frequency (RF) transceiver 310, transmit (TX) processing circuit 315, microphone 320, and receive (RX) processing circuit 325. UE 116 also includes speaker 330, controller / processor 340, input / output (I / O) interface 345, input 350, display 355, and memory 360. Memory 360 includes operating system (OS) program 361 and one or more applications 362.

[0070] The RF transceiver 310 receives the signal from the antenna 305. Figure 1 100 of the wireless network 100. The RF transceiver 310 downconverts the incoming RF signal to generate an intermediate frequency (IF) or baseband signal. The IF or baseband signal is sent to the RX processing circuit 325, which generates a processed baseband signal by filtering, decoding and / or digitizing the baseband or IF signal. The RX processing circuit 325 sends the processed baseband signal to the speaker 330 (such as for voice data) or to the controller / processor 340 for further processing (such as for web browsing data).

[0071] The TX processing circuit 315 receives analog or digital voice data from the microphone 320, or receives other outgoing baseband data (such as web data, email, or interactive video game data) from the controller / processor 340. The TX processing circuit 315 encodes, multiplexes, and / or digitizes the outgoing baseband data to generate a processed baseband or IF signal. The RF transceiver 310 receives the outgoing processed baseband or IF signal from the TX processing circuit 315 and up-converts the baseband or IF signal to an RF signal that is then transmitted via the antenna 305.

[0072] The controller / processor 340 may include one or more processors or other processing devices and execute an OS program 361 stored in the memory 360 to control the overall operation of the UE 116. For example, the controller / processor 340 may control the RF transceiver 310, the RX processing circuit 325, and the TX processing circuit 315 to receive forward channel signals and transmit reverse channel signals according to well-known principles. In some embodiments, the controller / processor 340 includes at least one microprocessor or microcontroller.

[0073] The controller / processor 340 may execute other processes and programs resident in the memory 360, such as operations for adjusting transmission parameters in response to interference as described in embodiments of the present disclosure. As part of executing the processing, the controller / processor 340 may move data into or out of the memory 360. In some embodiments, the controller / processor 340 is configured to execute an application 362 based on an OS program 361 or in response to a signal received from a gNB or operator. The controller / processor 340 is also coupled to an I / O interface 345 that enables the UE 116 to connect to other devices such as laptops and handheld computers. The I / O interface 345 is a communication path between these accessories and the controller / processor 340.

[0074] Controller / processor 340 is also coupled to input 350 (e.g., a keypad, touch screen, buttons, etc.) and display 355. An operator of UE 116 may use input 350 to enter data into UE 116. Display 355 may be a liquid crystal display, or other display capable of presenting text and / or at least limited graphics, such as from a website.

[0075] Memory 360 is coupled to controller / processor 340. Memory 360 may include at least one of random access memory (RAM), flash memory, or other read only memory (ROM).

[0076] As described in more detail below, various embodiments of the present disclosure enable a UE 116 to adjust transmission parameters for use in a communication system having multiple service / priority types. Figure 3A An example of UE 116 is shown, but the Figure 3A Make various changes. For example, Figure 3A Various components in the can be combined, further subdivided, or omitted, and additional components can be added as required. As a specific example, the controller / processor 340 can be divided into multiple processors, such as one or more central processing units (CPUs) and one or more graphics processing units (GPUs). Although Figure 3A The UE 116 is shown as a mobile phone or smart phone, but the UE may be configured to operate as other types of mobile or stationary devices.

[0077] Figure 3B An exemplary gNB according to the present disclosure is shown. Figure 3B The illustrated embodiment of gNB 102 is for illustration only, and Figure 1 Other gNBs in the same or similar configuration may have the same or similar configuration. However, gNBs have multiple configurations, and Figure 3BThe scope of the present disclosure is not limited to any particular implementation of gNB. gNB 101 and gNB 103 may include the same or similar structure as gNB 102.

[0078] like Figure 3B As shown, gNB 102 includes multiple antennas 370a to 370n, multiple RF transceivers 372a to 372n, transmit (TX) processing circuitry 374, and receive (RX) processing circuitry 376. In some embodiments, one or more of the multiple antennas 370a to 370n include a 2D antenna array. gNB 102 also includes a controller / processor 378, a memory 380, and a backhaul or network interface 382.

[0079] The RF transceivers 372a to 372n receive incoming RF signals from antennas 370a to 370n, such as signals transmitted by a UE or other gNB. The RF transceivers 372a to 372n down-convert the incoming RF signals to produce IF or baseband signals. The IF or baseband signals are sent to the RX processing circuit 376, which generates processed baseband signals by filtering, decoding and / or digitizing the baseband or IF signals. The RX processing circuit 376 sends the processed baseband signals to the controller / processor 378 for further processing.

[0080] The TX processing circuit 374 receives analog or digital data (such as voice data, web data, email, or interactive video game data) from the controller / processor 378. The TX processing circuit 374 encodes, multiplexes, and / or digitizes the output baseband data to produce processed baseband or IF signals. The RF transceivers 372a to 372n receive the output processed baseband or IF signals from the TX processing circuit 374 and up-convert the baseband or IF signals to RF signals that are transmitted via the antennas 370a to 370n.

[0081] The controller / processor 378 may include one or more processors or other processing devices that control the overall operation of the gNB 102. For example, the controller / processor 378 may control the RF transceivers 372a to 372n, the RX processing circuit 376, and the TX processing circuit 374 to receive forward channel signals and transmit reverse channel signals in accordance with known principles. The controller / processor 378 may also support additional functions, such as more advanced wireless communication functions. In some embodiments, the controller / processor 378 includes at least one microprocessor or microcontroller.

[0082] The controller / processor 378 may execute programs such as an OS and other processes residing in the memory 380. As described in embodiments of the present disclosure, the controller / processor 378 may support transmission parameter adjustments in response to interference. In some embodiments, the controller / processor 378 supports communications between entities such as web RTC. As part of executing a process, the controller / processor 378 may move data into or out of the memory 380.

[0083] The controller / processor 378 is also connected to a backhaul or network interface 382. The backhaul or network interface 382 allows the gNB 102 to communicate with other devices or systems via a backhaul connection or via a network. The backhaul or network interface 382 can support communication via any suitable wired or wireless connection. For example, when the gNB 102 is implemented as part of a cellular communication system (e.g., a system supporting 5G, or new radio access technology or NR, LTE, or LTE-A), the backhaul or network interface 382 can allow the gNB 102 to communicate with other gNBs via a wired or wireless backhaul connection. When the gNB 102 is implemented as an access point, the backhaul or network interface 382 can allow the gNB 102 to communicate with a larger network (such as the Internet) via a wired or wireless local area network or via a wired or wireless connection. The backhaul or network interface 382 includes any suitable structure that supports communication via a wired or wireless connection, such as an Ethernet or RF transceiver.

[0084] The memory 380 is coupled to the controller / processor 378. The memory 380 may include at least one of a RAM, a flash memory, or other ROM. In some embodiments, a plurality of instructions such as a BIS algorithm are stored in the memory. When the plurality of instructions are executed, the controller / processor 378 may be caused to perform the BIS process and decode the received signal after subtracting at least one interference signal determined by the BIS algorithm.

[0085] As described in more detail below, the transmit path and receive path of gNB 102 (implemented using RF transceivers 372a to 372n, TX processing circuitry 374, and / or RX processing circuitry 376) adjust transmission parameters in response to interference.

[0086] As described in more detail below, various embodiments of the present disclosure enable gNB 102 to work with UE 116 to adjust transmission parameters in a communication system having multiple service / priority types. Figure 3B An example of gNB 102 is shown, but the Figure 3B For example, gNB 102 may include Figure 3AAny number of each component shown. As a specific example, an access point can include multiple backhaul or network interfaces 382, ​​and the controller / processor 378 can support routing functionality for routing data between different network addresses. As another example, although shown as including a single TX processing circuitry 374 instance and a single RX processing circuitry 376 instance, the gNB 102 can include multiple TX processing circuitry 374 instances and multiple RX processing circuitry 376 instances (such as one instance per RF transceiver).

[0087] The time unit for DL ​​signaling or UL signaling on a cell is one symbol. A symbol belongs to a time slot including a plurality of symbols such as 14 symbols, and is called a DL symbol if the symbol is used for DL ​​signaling, a UL symbol if the symbol is used for UL signaling, or a flexible symbol if the symbol can be used for DL ​​signaling or UL signaling. A time slot may also be a time unit for DL ​​signaling or UL signaling on a cell.

[0088] The bandwidth (BW) unit is called a resource block (RB). One RB includes multiple subcarriers (SC), such as 12 subcarriers. The RB in one symbol of a time slot is called a physical RB (PRB) and includes multiple resource elements (RE). For example, a time slot may have a duration of 1 millisecond and include 14 symbols, and an RB may have a BW of 180kHz and include 12 SCs with an SC spacing of 15kHz. As another example, a time slot may have a duration of 0.25 milliseconds and include 14 symbols, and an RB may have a BW of 720kHz and include 12 SCs with an SC spacing of 60kHz.

[0089] DL signals include data signals that transmit information content, control signals that transmit DL control information (DCI), and reference signals (RS) also referred to as pilot signals. A gNB, such as gNB 102, may send data information or DCI through a corresponding physical DL shared channel (PDSCH) or a physical DL control channel (PDCCH). The gNB may send one or more of multiple types of RS including a channel state information RS (CSI-RS) and a demodulation RS (DMRS). CSI-RS is primarily used for UEs to perform measurements and provide channel state information (CSI) to the gNB. For channel measurements, non-zero power CSI-RS (NZP CSI-RS) resources may be used. For interference measurement reports (IMRs), CSI interference measurement (CSI-IM) resources associated with zero power CSI-RS (ZP CSI-RS) configurations may be used.

[0090] CSI processing may include NZP CSI-RS and CSI-IM resources. A UE, such as UE 116, may determine CSI-RS transmission parameters through DL control signaling or higher layer signaling, such as radio resource control (RRC) signaling from a gNB. A transmission instance of CSI-RS may be indicated by DL control signaling on the physical layer or configured through higher layer signaling. DMRS is typically received only by a UE, such as UE 116, in a BW received by a corresponding PDCCH or PDSCH, and the UE may use DMRS to demodulate data or control information.

[0091] Rel-13 LTE supports up to 16 CSI-RS antenna ports, which enable gNBs to be equipped with a large number of antenna elements (such as 64 or 128). In this case, multiple antenna elements are mapped to one CSI-RS port. In addition, up to 32 CSI-RS ports are supported in Rel-14 LTE. For next-generation cellular systems such as 5G, the maximum number of CSI-RS ports can be further increased to, for example, 64.

[0092] For mmWave bands, although the number of antenna elements can be larger for a given form factor, the number of CSI-RS ports (which may correspond to the number of digital precoding ports) is often limited due to hardware constraints. For example, hardware constraints may include the feasibility of installing a large number of ADCs / DACs at mmWave frequencies.

[0093] Figure 4A An exemplary transmitter structure according to various embodiments of the present disclosure is shown. Figure 4A The exemplary transmitter structure 401 shown in FIG. 4 is for illustration only and should not be construed as limiting. Figure 4A The scope of the present disclosure is not limited to any particular transmitter architecture. Figure 4A One or more components shown in the figure may be implemented in a dedicated circuit configured to perform the functions, or one or more components may be implemented by one or more processors executing instructions to perform the functions. For example, the transmitter structure 401 may be implemented in UE 111 to UE 116 or gNB 101 to gNB 103 that implements the transmission path 200. Other implementations may be used without departing from the scope of the present disclosure.

[0094] like Figure 4AAs shown, information bits such as DCI bits or data information bits 402 are encoded by encoder 404, rate matched to the allocated time / frequency resources by rate matcher 406, and modulated by modulator 408. Subsequently, the modulated coded symbols and DMRS or CSI-RS 410 are mapped to SC 412 by SC mapping unit 414, inverse fast Fourier transform (IFFT) is performed by filter 416, cyclic prefix (CP) is added by CP insertion unit 418, and the resulting signal 422 is filtered by filter and then transmitted by radio frequency (RF) unit 420.

[0095] Figure 4B An exemplary receiver structure using OFDM according to various embodiments of the present disclosure is shown. Figure 4B The example receiver structure 431 shown is for illustration only and should not be construed as limiting. Figure 4B The scope of the present disclosure is not limited to any particular receiver architecture. Figure 4B One or more components shown in the figure may be implemented in a dedicated circuit configured to perform the functions, or one or more components may be implemented by one or more processors executing instructions to perform the functions. For example, the receiver structure 431 may be implemented in UE 111 to UE 116 or gNB 101 to gNB 103 that implements the receive path 250, and other implementations may be used without departing from the scope of the present disclosure.

[0096] like Figure 4B As shown, the received signal 432 is filtered by filter 434, the CP removal unit 436 removes the CP, the filter 438 applies a fast Fourier transform (FFT), the SC demapping unit 440 demaps the SC selected by the BW selector unit 442, the received symbols are demodulated by the channel estimator and demodulator unit 444, the rate dematcher 446 restores the rate matching, and the decoder 448 decodes the resulting bits to provide information bits 450.

[0097] The UE typically monitors multiple candidate positions for corresponding potential PDCCH reception to decode multiple DCI formats in a time slot. The DCI format includes a cyclic redundancy check (CRC) bit for the UE to confirm that the detection of the DCI format is correct. The DCI format type is identified by the radio network temporary identifier (RNTI) scrambled with the CRC bit. For DCI formats that schedule PDSCH or PUSCH to a single UE, the RNTI can be a cell RNTI (C-RNTI) or MCS-C-RNTI and acts as a UE identifier. For DCI formats that schedule PDSCH that provides transmission system information (SI), the RNTI can be a system information RNTI (SI-RNTI). For DCI formats that schedule PDSCH that provides a random access response (RAR), the RNTI can be a random access RNTI (RA-RNTI). For DCI formats that provide a transmit power control (TPC) command to a group of UEs, the RNTI can be a transmit power control RNTI (TPC-RNTI). For DCI formats that indicate discontinuous transmissions from the gNB in ​​the previous time slot, the RNTI can be an interrupt RNTI (INT-RNTI). Each RNTI type may be configured to the UE through higher layer signaling such as RRC signaling.A DCI format that schedules PDSCH reception to a UE is also referred to as a DL DCI format or DL ​​assignment, while a DCI format that schedules PUSCH transmission from a UE is also referred to as a UL DCI format or UL grant.

[0098] The PDCCH reception may be within a PRB set. The gNB may configure one or more PRB sets (also referred to as control resource sets (CORESETs)) for the UE for PDCCH reception. The PDCCH reception may be in a control channel element (CCE) included in the CORESET. The UE determines a CCE for decoding a candidate PDCCH based on a search space. A candidate PDCCH set for a DCI format with a C-RNTI, CS-RNTI, or MCS-C-RNTI defines a UE-specific search space set (USS set) for the corresponding DCI format, wherein the UE (such as UE 116) determines the candidate location of the PDCCH based on the USS, and a candidate PDCCH set for a DCI format with a non-UE-specific RNTI defines a common search space set (CSS set), wherein the UE (such as UE 116) determines the candidate PDCCH location based on the CSS. A search space set is associated with a CORESET, wherein a UE (such as UE 116) monitors the candidate PDCCH of the search space set, wherein monitoring means receiving the candidate PDCCH by the UE and decoding the DCI format associated with the candidate PDCCH. The UE expects to monitor candidate PDCCHs for up to 4 sizes of DCI formats including up to 3 sizes of DCI formats with CRC scrambled by the C-RNTI or MCS-C-RNTI of each serving cell. The UE counts the size of the DCI format for each serving cell based on the number of candidate PDCCHs configured in the corresponding search space set for the corresponding active DL BWP.

[0099] The UE (such as UE 116) receives the k s The PDCCH monitoring period of time slots, s The PDCCH monitoring timing on the active DL BWP is determined by the PDCCH monitoring offset of the time slot and the PDCCH monitoring mode in the time slot indicating the first symbol of the CORESET in the PDCCH monitoring time slot. For the search space set s, if (in is the number of time slots per frame for subcarrier spacing (SCS) configuration μ), the UE determines that the PDCCH monitoring opportunity is at the time numbered n f The frame number is UE from the time slot Start monitoring for T s The PDCCH of the search space set s of consecutive time slots is not monitored. s -T sIf the PDCCH monitoring mode instructs the UE to monitor PDCCH in a subset of up to three consecutive symbols, which are the same in each slot in which the UE monitors PDCCH for all search space sets, the UE does not expect to be configured with a PDCCH SCS other than 15 kHz if the subset includes at least one symbol after the third symbol.

[0100] In various embodiments, for example, the UE may be configured with parameters for monitoring a search space set for PDCCH to decode DCI format 0_0 for scheduling PUSCH transmission, or DCI format 1_0 for scheduling PDSCH reception. The UE may also be configured with parameters for monitoring a search space set for PDCCH to decode DCI format 0_1 ​​for scheduling PUSCH transmission, or DCI format 1_1 for scheduling PDSCH reception.

[0101] For example, Figure 5A An exemplary encoding process according to various embodiments of the present disclosure is shown. More specifically, Figure 5A The encoding process of the DCI format according to various embodiments of the present disclosure is shown. Figure 5A The illustrated implementation of the encoding process is for illustration only and should not be construed as limiting. Figure 5A The scope of this disclosure is not limited to any particular encoding process. Figure 5A One or more steps shown in the embodiment may be implemented in a dedicated circuit configured to perform the functions, or one or more components may be implemented by one or more processors executing instructions to perform the functions. For example, the encoding process 501 may be implemented in UE 111 to UE 116 or gNB 101 to gNB 103 that implements the encoding process 501. Other implementations may be used without departing from the scope of the present disclosure.

[0102] A gNB, such as gNB 102, encodes and modulates each DCI format in a corresponding PDCCH, respectively. When applicable, a DCI format for an RNTI for a UE, such as UE 116, is intended to mask a CRC of a DCI format codeword to enable UE 116 to identify the DCI format. For example, the CRC may include 16 bits or 24 bits, and the RNTI may include 16 bits or 24 bits. Otherwise, when the RNTI is not included in the DCI format, a DCI format type indicator field may be included in the DCI format. A CRC calculation unit 504 is used to determine a CRC of (uncoded) DCI format bits 502, and an exclusive OR (XOR) operation unit 506 between the CRC bits and the RNTI bits 508 is used to mask the CRC. The XOR operation is defined as XOR(0,0)=0, XOR(0,1)=1, XOR(1,0)=1, XOR(1,1)=0. A CRC append unit 510 is used to append the masked CRC bits to the DCI format information bits. The encoder 512 performs channel coding (such as tail bit convolutional coding or pole coding), and the allocated resources are then rate matched by the rate matcher 514. The interleaving and modulation unit 516 applies interleaving and modulation (such as QPSK), and sends an output control signal 518.

[0103] Figure 5B An exemplary decoding process according to various embodiments of the present disclosure is shown. More specifically, Figure 5B An exemplary decoding process of a DCI format used with a UE according to various embodiments of the present disclosure is shown. Figure 5B The illustrated implementation of the decoding process is for illustration only and should not be construed as limiting. Figure 5B The scope of this disclosure is not limited to any particular decoding process. Figure 5B One or more of the steps shown in the above may be implemented in a dedicated circuit configured to perform the functions, or one or more components may be implemented by one or more processors executing instructions to perform the functions. For example, the decoding process 531 may be implemented in UE 111 to UE 116 or gNB 101 to gNB 103 that implements the decoding process 531. Other implementations may be used without departing from the scope of the present disclosure. In various implementations, the decoding process 531 may be implemented in conjunction with Figure 5A The encoding process 501 shown is a complementary process.

[0104] The received control signal 532 is demodulated and deinterleaved by a demodulator and deinterleaver 534. Rate matching applied at a gNB (such as gNB 102), transmitter, is recovered by a rate matcher 536 and the resulting bits are decoded by a decoder 538. After decoding, a CRC extractor 540 extracts the CRC bits and provides DCI format information bits 542. The DCI format information bits are demasked 544 (when applicable) by an XOR operation with the RNTI 546 and a CRC check is performed by unit 548. When the CRC check succeeds (checksum is zero), the DCI format information bits are considered valid. When the CRC check is unsuccessful, the DCI format information bits are considered invalid.

[0105] The UL signal also includes a data signal that transmits information content, a control signal that transmits UL control information (UCI), a DMRS associated with data or UCI demodulation, a sounding RS (SRS) that enables the gNB 102 to perform UL channel measurements, and a random access (RA) preamble that enables the UE to perform random access. The transceiver 310 of the UE 116 transmits the data information or UCI through the corresponding physical UL shared channel (PUSCH) or physical UL control channel (PUCCH). When the UE 116 transmits data information and UCI at the same time, the UE can multiplex both in the PUSCH. The UCI includes: hybrid automatic repeat request acknowledgement (HARQ-ACK) information, indicating correct or incorrect detection of a transport block (TB) with data information in the PDSCH; a scheduling request (SR), indicating whether the UE 116 has data in its buffer; and a CSI report, which enables the gNB to select appropriate parameters for PDSCH or PDCCH transmission to the UE 116. For UCI multiplexing in the PUSCH, the UE 116 can determine the number of REs according to the UCI type. For systems operating using hybrid beamforming, the UCI may also include beam information for receiving signals and corresponding reference signal received power (RSRP) values, such as an index to a quasi-configuration parameter set from a plurality of quasi-configuration parameter sets.

[0106] The CSI report from the UE may include a channel quality indicator (CQI), a precoding matrix indicator (PMI), and a rank indicator (RI). The channel quality indicator (CQI) informs the gNB of the maximum modulation and coding scheme (MCS) to enable the UE to detect the data TB with a predetermined block error rate (BLER), such as a BLER of 10%. The precoding matrix indicator (PMI) informs the gNB how to combine signals from multiple transmitter antennas according to the multiple-input multiple-output (MIMO) transmission principle. The rank indicator (RI) indicates the transmission rank used for the PDSCH.

[0107] UL RS includes DMRS, SRS, and phase tracking RS (PTRS). In some embodiments, DMRS may be sent only in the BW of the corresponding PUSCH or PUCCH transmission. The gNB may use DMRS to demodulate information in the corresponding PUSCH or PUCCH. SRS is sent by the transceiver 310 of UE 116 to provide UL CSI to the gNB, and for TDD systems, SRS transmission may also provide PMI for the gNB's DL transmission. PTRS is sent in PUSCH REs to enable a receiver of a gNB (such as gNB 102) to obtain a phase track of the received signal. In addition, in order to establish synchronization or an initial RRC connection with gNB 102, UE 116 may send a physical random access channel (PRACH).

[0108] A UE (such as UE 116) sets the power for channel or signal transmissions such as PUSCH, PUCCH, or SRS with the goal of achieving the respective reliability targets by achieving the respective target received signal to interference and noise ratio (SINR) or target block error rate (BLER) at the cell of the gNB while controlling interference to neighboring cells. UL power control (PC) includes open loop PC (OLPC) with cell-specific parameters and UE-specific parameters, and closed loop PC (CLPC) correction provided to the UE by a gNB (such as gNB 102) through a transmit PC (TPC) command (see also REF 3). When PUSCH transmissions are scheduled by PDCCH, the TPC command is included in the respective DCI format.

[0109] In various embodiments, the 5G system may flexibly support multiple service types in the same DL BWP or UL BWP that require orders of magnitude different BLER targets for data or control information and require widely varying latencies for successful delivery of transport blocks (TBs). For PDSCH reception by UEs providing TBs that require low latency and high reliability, a serving gNB (such as gNB 102) may suspend any ongoing transmissions that would interfere with PDSCH reception (using the same resources in the time / frequency / space domain) of the TBs by a UE (such as UE 116). Such interference avoidance is more difficult for PUSCH transmissions from UEs providing TBs that require low latency and high reliability.

[0110] For PUSCH transmissions from a UE (such as UE 116) scheduled by a gNB (such as gNB 102) via a UL DCI format, the gNB flexibly avoids ongoing or future transmissions from other UEs that would interfere with the PUSCH transmissions by avoiding resource allocations that interfere with the PUSCH transmissions. However, since previously scheduled transmissions (such as SRS transmissions) can occupy a significant portion of the active UL BWP, it is not always possible to avoid interference through scheduling. Therefore, various methods can be implemented to ensure the reliability of PUSCH transmissions.

[0111] In some embodiments, to ensure the reliability of PUSCH transmissions from UEs that may be interfered with by transmissions from other UEs, the gNB may instruct other UEs to cancel their transmissions at least in the time / frequency / space resources that may interfere with the PUSCH transmissions from the UEs. For example, the gNB may provide an indication to other UEs to cancel their transmissions via a PDCCH transmission, the PDCCH indication including a DCI format that can be detected by all UEs and notifying a set of time resources and a set of frequency resources (referred to as time-frequency resources for brevity) that transmissions from other UEs need to be canceled. In some embodiments, the DCI format may be referred to as DCI format 2_4.

[0112] The UE monitors the PDCCH at multiple occasions within a timeslot. In addition, when the TB included in the PUSCH transmission from the UE needs to have high reception reliability at the gNB, all interfering UEs need to detect the DCI format provided by the PDCCH with a reception reliability at least similar to that of the TB at the gNB. Therefore, the method requires the use of a large CCE aggregation level for the PDCCH transmission of the gNB. The combination of a short monitoring period (frequent PDCCH transmissions) and a large number of CCEs used for each PDCCH transmission provides a DCI format that indicates the time and / or frequency resources that the transmission from the UE needs to be suspended, which increases the implementation complexity of the UE in terms of the number of non-overlapping CCEs for which the UE needs to perform channel estimation within a time period such as a timeslot or a portion of a timeslot. Therefore, various embodiments of the present disclosure recognize the benefits of providing a mechanism for a UE to monitor a PDCCH including a DCI format that indicates to the UE the time-frequency resources for which the UE should suspend transmission, while alleviating the increase in the number of non-overlapping CCEs for which the UE needs to perform channel estimation in a timeslot. If the CCEs for the candidate PDCCHs correspond to different CORESET indices or different first symbols for receiving respective candidate PDCCHs, the CCEs for the candidate PDCCHs are non-overlapping.

[0113] In another embodiment, to ensure the reliability of PUSCH transmissions from a UE that may be interfered with by transmissions from other UEs, the gNB may instruct to increase the PUSCH transmission power from the UE. Additionally, the gNB may employ interference cancellation such as serial interference cancellation. This embodiment may be limited to UEs that are capable of increasing the PUSCH transmission power.

[0114] In some embodiments, a PUSCH transmission from a UE, such as UE 116, may be performed autonomously on resources in a resource set provided to UE 116 from gNB 102 via higher layers, without an associated UL DCI format from gNB 102. The PUSCH transmission may be referred to as a grant-free PUSCH transmission (GF-PUSCH) or a configured grant PUSCH transmission (CG-PUSCH). For a CG-PUSCH transmission from UE 116, since gNB 102 is not aware of the CG-PUSCH transmission from UE 116 in advance, gNB 102 does not instruct any interfering UE to cancel its transmission.

[0115] A method for gNB 102 to avoid or mitigate the effects of intra-cell interference on CG-PUSCH transmissions is to indicate, for example, at the beginning of each time slot in which a CG-PUSCH transmission may occur, a time-frequency resource (or frequency resource if all symbols of the time slot are used) with transmissions from other UEs. The UE 116 with the CG-PUSCH transmission can then select a resource from the resource set that has the least impact on the intra-cell interference of the CG-PUSCH transmission. For example, the resource can be a resource with the least number of RBs used for transmissions by other UEs. In addition, or if there are no such available resources, the UE 116 can also be configured with a set of transmission power control parameters for use when, for example, the CG-PUSCH transmission includes RBs indicated by the gNB 102, includes or does not include intra-cell interference from other UEs communicating with the gNB 102.

[0116] Similar to PUSCH transmissions scheduled by the UL DCI format, UE 116 is not always able to increase PUSCH transmission power to avoid interference. In addition, when UE 116 is able to increase PUSCH transmission power, the amount of increase depends on the amount of interference. Therefore, various embodiments of the present disclosure recognize the benefits of enabling a UE with a CG-PUSCH transmission that is subject to intra-cell interference to improve the reception reliability of the associated TB without having to increase the CG-PUSCH transmission power. Various embodiments of the present disclosure recognize the benefits of enabling a UE with a CG-PUSCH transmission that is subject to intra-cell interference to adjust the CG-PUSCH transmission power according to the degree of intra-cell interference. Various embodiments of the present disclosure recognize the benefits of minimizing the likelihood that a CG-PUSCH transmission from a UE will be subject to transmission interference from other UEs on the same bandwidth portion of the same serving cell.

[0117] Although described herein as allowing PUSCH transmissions from a UE, the same or similar principles may apply to PUCCH transmissions from a UE in resources indicated by a DL DCI format.

[0118] Therefore, various embodiments of the present disclosure provide a UE that determines power adjustment or MCS adjustment for CG-PUSCH transmission depending on the amount of interference experienced by the CG-PUSCH transmission from transmissions of other UEs on the same service cell. Various embodiments of the present disclosure also provide a UE that determines resources for CG-PUSCH transmission from a configured resource set based on the amount of interference experienced by the CG-PUSCH transmission from transmissions of other UEs on the same service cell. Various embodiments of the present disclosure also provide a UE that minimizes the possibility that a CG-PUSCH transmission from the UE is subject to interference from transmissions of other UEs on the same service cell when the UE includes CG-PUSCH resources on multiple cells.

[0119] In various embodiments, a UE (such as UE 116) may support different service / priority types, such as mobile broadband (MBB) for Internet access, and ultra-reliable low latency communications (URLLC), such as from augmented / virtual reality (AR / VR). Since the communication requirements for different service types may be different, the DCI format used to schedule PDSCH reception or PUSCH transmission for one service type to UE 116 may be different from the DCI format for another service type, and the corresponding PDCCH transmission may require different CCE aggregation levels to accommodate different reliability requirements. In order to simplify UE implementation, the number of sizes of DCI formats (e.g., DCI formats with CRC scrambled by C-RNTI or MCS-C-RNTI) used to schedule UE-specific PDSCH reception or PUSCH transmission may be limited to, for example, three.

[0120] Thus, various embodiments of the present disclosure recognize that when a UE monitors multiple DCI formats, the number of corresponding DCI format sizes does not exceed a limit that may be predetermined in system operation or a limit on the DCI format size indicated by the UE as part of the UE capabilities. Thus, various embodiments of the present disclosure provide a UE that monitors DCI formats corresponding to different service types. In these embodiments, the size of a DCI format that schedules a UE-specific PDSCH reception or PUSCH transmission may be limited to three.

[0121] Embodiments of the present disclosure enable the power of CG-PUSCH transmissions from a UE (such as UE 116) to the same serving gNB (such as gNB 102) to be adapted based on the amount of interference from transmissions from other UEs (e.g., UE 111 to UE 115) to the CG-PUSCH transmission. The DCI format of the time-frequency resources in the time slot for transmissions by other UEs 111 to UE 115 may provide an indication to UE 116. The DCI format may be referred to as DCI format 2_5. In some embodiments, DCI format 2_5 may provide an indication of time-frequency resources in the time slot that are not used for transmissions by other UEs 111 to UE 115. The search space for the PDCCH with DCI format 2_5 may be a CSS.

[0122] For example, the serving gNB 102 may send a PDCCH providing DCI format 2_5 at the beginning of each timeslot in which there are CG-PUSCH transmission resources. A corresponding search space set of candidate PDCCHs monitoring DCI format 2_5 may be provided to the UE 116. The candidate PDCCHs may be limited to, for example, one or two. When the UE 116 is configured with an additional search space set for monitoring the PDCCH according to the CSS in the same CORESET, the candidate PDCCHs for DCI format 2_5 may be before or after the candidate PDCCHs for other search space sets. For example, when the UE 116 monitors candidate PDCCHs for DCI format 2_0 and candidate PDCCHs for DCI format 2_5 in the same CORESET, and the UE 116 is configured with two candidate PDCCHs for DCI format 2_0 and two candidate PDCCHs for DCI format 2_5, the two candidate CCEs for DCI format 2_5 may be after the last two candidate CCEs for DCI format 2_0. In some embodiments, the CSS for a PDCCH having a DCI format may be configured to be offset from the DCI format by 0. DCI Starting from, and determined by Equation 1:

[0123]

[0124] In another embodiment, the CSS for a PDCCH with a DCI format may be offset from the CSS for the DCI format. DCI Starting from, and determined by Equation 2:

[0125]

[0126] In some embodiments, the offset 0 DCI The search space set configuration may be provided from the serving gNB 102 to the UE 116 via higher layers, for example, as part of the search space set configuration for the associated DCI format. In other embodiments, the search space set configuration may be provided by the UE according to a specified rule (such as when, for example, DCI format 2_0 is configured with two candidates for CCE aggregation level 8, for DCI format 2_0, O DCI =0; and for DCI format 2_5, O DCI =16) to determine the offset O DCI , and the offset O DCI Stored in memory 360. Offset O DCIThe use of may be limited to a CSS having a predetermined number of candidate DCI formats. The above aspects for PDCCH transmissions with DCI format 2_5 also apply to PDCCH transmissions with DCI format 2_4, and generally to any DCI format associated with a CSS. For example, one or more search space sets may be provided to the UE based on the CSS to monitor the PDCCH for detecting DCI format 2_4, and DCI format 2_4 may also be associated with a small number of candidate PDCCHs (e.g., 1, 2, or 4). In addition, DCI format 2_4 and DCI format 2_5 may be the same DCI format.

[0127] Figure 6 FIG. 4 shows a method for determining a candidate PDCCH CCE of a DCI format in a corresponding CSS according to various embodiments of the present disclosure. Figure 6 The implementation of determining the CCEs of the candidate PDCCHs of the DCI format in the corresponding CSS shown in is for illustration only and should not be construed as limiting. Figure 6 The scope of the present disclosure is not limited to any particular determination of CCEs for candidate PDCCHs for a DCI format in a corresponding CSS.

[0128] like Figure 6 As shown, for the first DCI format, a search space set having two candidate PDCCHs and corresponding CCE aggregation levels of four CCEs 610 and eight CCEs 615 is provided to a UE (such as UE 116). The UE is also provided with a position offset of the first CCE of the candidate PDCCH for the first DCI format. DCI = 0 or the default value of the first DCI format DCI =0. For the second DCI format, the UE 116 is provided with a search space set having two candidate PDCCHs and corresponding CCE aggregation levels of four CCEs 620 and eight CCEs 625. The UE is also provided with a position offset of the first CCE for the candidate PDCCH of the second DCI format. DCI =8.

[0129] UE 116 may be configured with multiple configuration grant resource sets with CG-PUSCH transmission. Based on the unavailable (or available) time resource set (symbols of one or more time slots) and frequency resource set (RB) (referred to as time-frequency resources for brevity) indicated by DCI format 2_4 or DCI format 2_5, UE 116 may determine the resources for CG-PUSCH transmission, wherein the resources do not include unavailable time-frequency resources. When such resources do not exist, UE 116 may select resources with the minimum number of REs indicated as part of the unavailable time-frequency resources, or UE 116 may apply other criteria as described in other embodiments of the present disclosure. In order to achieve the target reception reliability (BLER) of CG-PUSCH transmission, UE 116 may increase the associated transmission power. Although described herein as considering CG-PUSCH transmission, the same principle may apply to PUSCH transmissions scheduled by the DCI format when the resources indicated for PUSCH transmission include unavailable resources.

[0130] In one embodiment, UE 116 determines an increase in CG-PUSCH transmission power based on the number of REs in the CG-PUSCH that are subject to other transmission interference (intra-cell interference) from the same serving gNB, such as gNB 102. UE 116 power adjusts the PUSCH transmission power on the active UL BWP b of carrier f on serving cell c, for example, by a factor of Among them, the PUSCH with UL-SCH data C is the number of code blocks sent, K is the size of code block r, and N RE is the number of REs available for data / UCI transmission. Since the gNB 102 knows the REs of the PUSCH that are subject to interference, the gNB 102 can exclude the corresponding modulation (or demodulation) symbols from reception, or can apply different (smaller) weights to the corresponding modulation (or demodulation) symbols based on the likelihood metric obtained before decoding the TB, or can apply interference cancellation. Depending on the gNB reception method, the UE 116 can increase the PUSCH transmission power by different amounts.

[0131] For example, when gNB 102 punctures / drops interfered REs for PUSCH reception, and when N RE N of REs RE，int When REs are subject to interference, UE 116 uses N RE -N RE，int Replace N RE and use To determine the PUSCH transmission power adjustment Δ TF，b，f，cAs another example, when gNB 102 adjusts the interfered REs for PUSCH reception, gNB 102 may provide UE 116 with a weighting factor w for UE 116 to adjust the number of interfered REs. RE , and from N RE Subtract w from RE ·N RE，int To obtain BPRE

[0132] In another embodiment, the gNB 102 may provide, via higher layer signaling, a set of power increase values ​​for a corresponding set of percentages of interfered REs for PUSCH transmission to the UE 116. For example, when the percentage of interfered REs is between 0% and 25%, between 25% and 50%, between 50% and 75%, and between 75% and 100%, the gNB 102 may configure the UE 116 to increase the PUSCH transmission power by [1, 3, 4, 5, 6] dB, respectively.

[0133] For example, Figure 7 A method for determining PUSCH transmission power according to various embodiments of the present disclosure is shown. More specifically, Figure 7 A method 700 for determining PUSCH transmission power by a UE 116 based on the number of interfered REs for PUSCH transmission according to various embodiments of the present disclosure is shown. Figure 7 The method shown in FIG. 1 is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNB101 to gNB 103. Other implementations may be used without departing from the scope of the present disclosure.

[0134] In operation 710, a first set of time-frequency resources for PUSCH transmission to the serving gNB 102 is indicated to the UE 116. The indication may be performed via a DCI format or via higher layer signaling.

[0135] In operation 720, UE 116 determines a number of REs in a PUSCH transmission that may be interfered by transmissions from other UEs 111 to UE 115 to serving gNB 102. The number of REs in a PUSCH transmission that may be interfered by transmissions from other UEs 111 to UE 115 may be referred to as interfered REs. In some embodiments, UE 116 may determine the number of interfered REs based on DCI format detection of UE 116, where the DCI format indicates a second set of time-frequency resources. Based on the determined number of interfered REs, UE 116 may determine a PUSCH transmission power.

[0136] In operation 730, UE 116 adjusts PUSCH transmission power. When the number of interfered REs has a first value greater than 0, UE 116 adjusts PUSCH transmission power by the first value. When the number of interfered REs has a second value greater than the first value, UE 116 adjusts PUSCH transmission power by the second value greater than the first value.

[0137] Embodiments of the present disclosure enable the modulation and coding scheme (MCS) of CG-PUSCH transmissions from a UE (such as UE 116) to the same serving gNB (such as gNB 102) to be adapted based on the amount of interference with the CG-PUSCH transmissions from other UEs (e.g., UEs 111 to UE 115). Figure 6 and Figure 7 In the above description, the adaptation of MCS may be applied to power-limited UEs, or may be combined with power increase.

[0138] In some embodiments, gNB 102 knows which CG-PUSCH REs are subject to interference. In these embodiments, gNB 102 may exclude the corresponding modulation (or demodulation) symbols from reception, or may apply different (smaller) weights to the corresponding modulation (or demodulation) symbols based on the obtained likelihood metric before decoding. Depending on the gNB reception method, UE 116 may reduce the MCS for CG-PUSCH transmissions by different amounts.

[0139] For example, when gNB 102 punctures / drops interfered REs for CG-PUSCH reception and N RE N of REs RE，int When REs experience interference, UE 116 will RE -N RE，int ) / N RE The configured MCS of the CG-PUSCH is adjusted, and the PUSCH is transmitted using the maximum MCS in the MCS table that is smaller than the adjusted MCS. The MCS table may be stored in the OS program 361 of the memory 360 .

[0140] In another example, when gNB 102 adjusts the interfered REs for PUSCH reception, gNB 102 may provide UE 116 with a weight factor w for UE 116 to adjust or offset the MCS of the configured CG-PUSCH transmission. MCS ≤1 or offset factor w MCS ≥0.

[0141] As yet another example, gNB 102 may provide, via higher layer signaling, a set of MCS weight factors for a corresponding set of percentages of interfered REs for PUSCH transmission to UE 116. For example, when the percentage of interfering REs is between 0% and 25%, between 25% and 50%, between 50% and 75%, and between 75% and 100%, gNB 102 may configure UE 116 to adjust the MCS for configuring CG-PUSCH transmission by [0.8, 0.6, 0.5, 0.3] dB, respectively.

[0142] Figure 8 A method for determining an MCS for PUSCH transmission according to various embodiments of the present disclosure is shown. More specifically, Figure 8 A method 800 of determining an MCS for a PUSCH transmission based on the number of interfered REs used for the PUSCH transmission, performed by a UE 116, according to various embodiments of the present disclosure is shown. Figure 8 The method shown is described herein as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNBs 101 to 103. Other implementations may be used without departing from the scope of the present disclosure.

[0143] At operation 810, a first set of time-frequency resources for PUSCH transmission is indicated to the UE 116. The UE 116 may use the time-frequency resources for PUSCH transmission to the gNB 102. In some implementations, the indication may be provided to the UE 116 via a DCI format or via higher layer signaling.

[0144] In operation 820, UE 116 determines the number of REs in PUSCH transmission that may be interfered by transmissions from other UEs 111 to UE 115 to serving gNB 102. REs for PUSCH transmission that may be interfered may be referred to as interfered REs. In some embodiments, when the DCI format indicates a second set of time-frequency resources, UE 116 may determine the number of interfered REs based on DCI format detection performed by UE 116. Based on the number of interfered REs, UE 116 may determine an MCS for PUSCH transmission.

[0145] In operation 830, UE 116 reduces the MCS of PUSCH transmission. When the number of interfered REs has a first value greater than zero, UE 116 reduces the MCS by a first value. When the number of interfered REs has a second value greater than the first value, UE 116 reduces the MCS by a second value greater than the first value.

[0146] Various embodiments of the present disclosure provide for selection of a cell or both a cell and a UL BWP for CG-PUSCH transmission from a UE (such as UE 116). In some embodiments, one or both of DCI format 2_4 and DCI format 2_5 may include multiple fields that provide corresponding multiple indications for time-frequency resources used (or not used) for UE transmissions on corresponding multiple UL cells, or corresponding multiple UL BWPs and multiple UL cells. The UE may configure the field position in DCI format 2_4 or DCI format 2_5 that is provided for indicating the corresponding UL cell or the corresponding UL BWP and UL cell. Each field may have the same size or different sizes.

[0147] In some embodiments, multiple UL cells may have the same SCS configuration for the corresponding UL BWP. A separate DCI format 2_4 or DCI format 2_5 may be used for UL cells having different SCS configurations for the corresponding UL BWP, or the DCI format's indication of the time-frequency resource may be adjusted according to the SCS configuration for the corresponding UL BWP. When there are multiple UL BWPs with the same SCS configuration for the UL cell, the DCI format 2_4 or DCI format 2_5 may include a field for each UL BWP. For example, for a serving gNB 102 of a PCell and a SCell (each of the PCell and the SCell has two UL BWPs), the first field and the second field may correspond to the first UL BWP and the second UL BWP of the PCell, and the third field and the fourth field may correspond to the third UL BWP and the fourth UL BWP. Therefore, in some embodiments, the fields in the DCI format 2_4 or DCI format 2_5 may be located in ascending order of UL BWP, starting from the cell with the lowest index (PCell), and then in ascending order of cell index. In other implementations, the fields may be arranged in ascending order of cell index, starting from the UL BWP with the lowest index, and then in ascending order of UL BWP index.

[0148] For example, DCI format 2_4 may include a first field for a UE (such as UE 116) to obtain an indication of time-frequency resources in one or more time slots, where UE 116 should suspend or cancel previously scheduled / configured PCell transmissions. DCI format 2_4 may also include a second field and a third field for UE 116 to obtain an indication of time-frequency resources in a time slot, where UE 116 will suspend or cancel previously scheduled / configured SCell transmissions for UE 116 with the lowest index and the second lowest index.

[0149] In some embodiments, a UE 116 configured with multiple CG-PUSCH resources may select a CG-PUSCH resource including the minimum number of REs (including zero REs) from the REs indicated by DCI format 2_4 for suspending or canceling scheduled / configured transmissions. The serving gNB 102 may use the REs used to schedule other transmissions from other UEs 111 to UE 115. When a UE 116 has configured CG-PUSCH resources on multiple cells that do not include any REs indicated by DCI format 2_4 for suspending / cancelling transmissions, the UE 116 may send the CG-PUSCH using the CG-PUSCH resources on the cell with the minimum index.

[0150] For example, for DCI format 2_5, UE 116 may be configured with a first field for indicating the time-frequency resources in the obtained time slot, where UE 116 has a transmission for scheduling / configuration of a PCell. UE 116 may also be configured with a second field and a third field for indicating the time-frequency resources in the obtained time slot, where UE 116 has a transmission for scheduling / configuration of an SCell with the lowest index and an SCell with the second lowest index.

[0151] In addition, when UE 116 is configured with multiple CG-PUSCH resources, UE 116 may select a CG-PUSCH resource including the minimum number of REs (including zero REs) from the REs for scheduled / configured transmissions indicated by DCI format 2_5. When UE 116 has configured CG-PUSCH resources on multiple cells that do not include any REs for scheduled / configured transmissions indicated by DCI format 2_5, UE 116 may send CG-PUSCH using the CG-PUSCH resource on the cell with the minimum index.

[0152] For example, Fig. 9 A method for determining a cell for CG-PUSCH transmission according to various embodiments of the present disclosure is shown. Fig. 9 The method 900 shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention may be performed by one or more of the gNBs 101 to 103 shown. Other implementations may be used without departing from the scope of the present disclosure.

[0153] At operation 910, at least one set of time-frequency resources for each cell from a set of more than one cell is provided by a gNB, such as gNB 102, to UE 116. The at least one set of time-frequency resources for each cell may be provided for CG-PUSCH transmissions to gNB 102.

[0154] At operation 920, for each resource set of at least one resource set of each cell from a set of more than one cell, UE 116 determines a number of REs where CG-PUSCH transmissions may be interfered with by transmissions from other UEs (such as UE 111 to UE 115) to gNB 102. The determined number of REs where CG-PUSCH transmissions may be interfered with by transmissions from other UEs 111 to UE 115 may be referred to as interfered REs. In some embodiments, UE 116 may determine the interfered REs based on a DCI format detected by UE 116. The DCI format may indicate a time-frequency resource set for each cell from a set of more than one cell.

[0155] At operation 930, for at least one resource set of each cell from a set of more than one cell, UE 116 determines the number of resource sets with zero interfering REs. At operation 940, UE 116 determines whether there are any cells with a positive number. If UE 116 determines that there are cells with a positive number, UE 116 proceeds to operation 950. If UE 116 determines that there are no cells with a positive number of resource sets, UE 116 proceeds to operation 960.

[0156] At operation 950, the UE 116 selects a resource set from the plurality of resource sets based on the UE 116 determining that at least one cell from the set of more than one cell has a positive number. For example, the UE 116 may select a resource set associated with a cell having a smallest index.

[0157] In operation 960, based on UE 116 determining that there is no cell with a positive number of resource sets, UE 116 selects the resource set with the smallest number of interfered REs. In embodiments where there is more than one resource set with the smallest number of interfered REs, UE 116 may select a resource set in the cell with the smallest index.

[0158] DCI format 2_4 and DCI format 2_5 may be the same DCI format, wherein, depending on the specific transmission, the UE may perform different actions based on the indication of the DCI format. For example, when the corresponding time resources and frequency resources are respectively included in the time resource set and frequency resource set indicated by the DCI format, the UE with a lower priority PUSCH transmission may cancel the PUSCH transmission; and when the corresponding time resources and frequency resources are respectively included in the time resource set and frequency resource set indicated by the DCI format, the UE with a higher priority PUSCH transmission may send the PUSCH by increasing the PUSCH transmission power or by using a smaller MCS for data information or by selecting a cell with the least amount of interference for PUSCH transmission.

[0159] As described herein, UL signals include signals related to initial access and scheduling requests. A UE, such as UE 116, may transmit a physical random access channel (PRACH) for initial access to a serving gNB, such as gNB 102, after UE 116 establishes synchronization and obtains system information from serving gNB 102. When UE 116 does not detect a random access response (RAR) in response to a previous PRACH transmission, UE 116 may transmit another PRACH at an increased power, for example, according to a power ramp-up procedure.

[0160] UE 116 may send a scheduling request (SR) to indicate to serving gNB 102 that UE 116 has data in its buffer for transmission to gNB 102. UE 116 sends the SR with parameters provided to UE 116 by gNB 102, such as a PUCCH resource configuration or a time period for PUCCH transmission providing the SR. In some embodiments, the parameters may be unique for each UE 116. When an SR is detected, gNB 102 may identify which UE (e.g., which UE among UE 111 to UE 116) has sent the SR and subsequently schedule UE 116 for PUSCH transmission, wherein UE 116 may provide more information about the buffer status of UE 116 via a buffer status report (BSR).

[0161] As described herein, UE 116 may determine the PUSCH transmission power. For a PUSCH transmission on an active ULBWP b of carrier f serving cell c, UE 116 may determine the PUSCH transmission power P at time i using a parameter set configuration with index j and a PUSCH power control adjustment state with index l. PUSCH，b，f，c (i,j,q d , l), as shown in Equation 3:

[0162]

[0163] UE 116 may determine the PUCCH transmission power P using Equation 4 PUCCH，b，f，c (i,j,q d , l):

[0164]

[0165] In equation 4, and α b，f，c (j) An open loop power control (OL PC) parameter, PL, for PUSCH transmission power in UE 116 (similar to PUCCH and SRS transmission power). b，f，c (q d ) is the path loss measurement that can be obtained by the UE by measuring the Reference Signal Received Power (RSRP), and f b，f，c (i, l)(g for PUCCH f，b，c (i, l)) is determined by UE 116, for example, by accumulating data for PUSCH transmission (or in g f，b，c In the case of (i, l), the closed loop power control (CL PC) parameters are obtained by using the transmission power control (TPC) command value for PUCCH transmission).

[0166] As described herein, a 5G system is capable of supporting multiple service / priority types for the same UE or different UEs, which require different orders of magnitude of BLER targets for data or control information, and require various different latencies for successful delivery of a transport block. A service type may be for mobile broadband (MBB) or for ultra-reliable low latency communications (URLLC).

[0167] URLLC services may be sporadic and require lower latency than MBB services. A UE such as UE 116 may not send or receive any signaling for a long period of time before the UE 116 sends or receives data with low latency. Data reception may be accompanied by a subsequent HARQ-ACK information transmission in a PUCCH from the UE 116 to indicate whether the UE 116 correctly detected the associated transport block (TB). Data transmission may be enabled by an SR transmission from the UE 116 and subsequent detection of a UL DCI format (UL grant) that schedules an associated PUSCH transmission from the UE 116 (grant-based PUSCH or GB-PUSCH), or data transmission may be enabled by a configuration grant (CG-PUSCH) where the UE 116 may send a PUSCH using one of one or more resource configuration sets previously provided to the UE 116 by the gNB 102.

[0168] When UE 116 does not receive a TPC command from serving gNB 102 for a period of time long enough that the channel medium characteristics have changed substantially (e.g., due to short-term fading that may result in a signal-to-interference-plus-noise ratio (SINR) change of up to 10 decibels (dB)), gNB 102 may not be able to determine an appropriate power setting for UE 116 transmissions. For example, for a PUCCH transmission with HARQ-ACK information, in response to a TB reception in a PDSCH scheduled by a DCI format that includes an indication of a TPC command value or an indication of an open-loop power control parameter value, gNB 102 may not have information for selecting a TPC command value or an open-loop power control parameter value. A similar situation may exist for a PUSCH transmission scheduled by a DCI format in a PDCCH. Additionally, for an SR transmission in a PUCCH or a CG-PUSCH transmission, gNB 102 may not have a priori knowledge of the transmission. Thus, various embodiments recognize that the transmission power is determined by UE 116.

[0169] Different UCI types may have different reception reliability requirements or different coding gains, which may affect the corresponding reception reliability. The serving gNB 102 may provide different values ​​of at least one parameter of the open-loop power control component to the UE 116 for the UE 116 to determine the PUCCH transmission power including the UCI type. When the PUCCH transmission includes multiple UCI types, the PUCCH transmission power determined by the UE 116 allows for the reception reliability of each of the multiple UCI types.

[0170] Therefore, various embodiments of the present disclosure recognize the potential benefits of the UE autonomously determining the transmission power. Various embodiments of the present disclosure further recognize the potential benefits of the SR transmission or CG-PUSCH transmission from the UE being correctly decoded by the serving gNB. Various embodiments of the present disclosure further recognize the potential benefits of using a TPC command value to increase the PUSCH transmission power from the UE on the serving cell to suppress interference from other transmissions on the serving cell to the PUSCH transmission without increasing the PUSCH transmission power from the UE that is not interfered with by other transmissions on the serving cell. Finally, various embodiments of the present disclosure recognize the potential benefits of determining the PUCCH transmission power including multiple UCI types with different reception reliability requirements.

[0171] Embodiments of the present disclosure provide an apparatus for a UE (such as UE 116) to determine a transmission power adjustment for at least one of a PUSCH, PUCCH, or SRS transmission. In a flexible duplex system, transmissions from a gNB (such as gNB 102) to UE 116 (DL) and transmissions from UE 116 to gNB 102 (UL) are at the same carrier frequency, and channel fading characteristics in the DL and UL are the same. Therefore, UE 116 can estimate the SINR change of the channel / signal transmission of UE 116 received by the serving gNB 102 by measuring the SINR change of the channel / signal transmission of gNB 102 received by UE 116. This may be beneficial when gNB 102 does not receive signaling from UE 116 for a sufficiently long period of time, which is long enough for the channel medium characteristics, such as the channel fading characteristics, to change substantially.

[0172] For example, the serving gNB 102 may configure the UE 116 whether or not the UE 116 may autonomously determine a transmit power adjustment for the PUSCH, or PUCCH, and / or SRS. The UE 116 may measure the received power or SINR of a signal, such as a CSI-RS or SS / PBCH block, that is periodically transmitted by the gNB 102. In some cases, for example, for a PUCCH transmission with HARQ-ACK information from the UE 116, in response to a PDSCH reception by the UE 116, the UE 116 may measure the received power or SINR using the DMRS in the PDSCH reception. Although described herein as CSI-RS, various embodiments may also be applied to other signals transmitted by the gNB 102.

[0173] In some embodiments, the transmit power of the CSI-RS may be notified to the UE 116 by the serving gNB 102. In other embodiments, the gNB 102 does not notify the UE 116 of the transmit power of the CSI-RS. The gNB 102 may provide the UE 116 with a target received power or target received SINR for the CSI-RS as a function of RSRP (or path loss), where the RSRP is measured by the UE 116. For example, the gNB 102 may provide the UE 116 with one or more reference CSI-RS received power values ​​for corresponding one or more RSRP values. When the UE 116 measures an RSRP of Y dBm associated with a CSI-RS received power of X dBm, and the UE 116 measures Y+Δ RSRP dBm CSI-RS received power, UE 116 may determine to increase the signal transmission power by -Δ RSRP dBm (where Δ RSRP, which may be positive, zero, or negative). For example, when a reference RSRP value of Y dBm and an associated reference CSI-RS received power of X dBm are provided to UE 116, and UE 116 measures an RSRP value of (Y+Y1) dBm and a CSI-RS received power of (X+X1) dBm, UE 116 determines the power adjustment Δ RSRP =(X+X1-Y-Y1)dBm. After determining the power adjustment, using PUSCH as a reference, UE 116 can determine the PUSCH transmission power as shown in Equation 6:

[0174]

[0175] For example, Fig.10 A method for determining transmission power according to various embodiments of the present disclosure is shown. Fig.10 The method shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNBs 101 to 103. Other implementations may be used without departing from the scope of the present disclosure.

[0176] In operation 1010, a reference RSRP value of Y dBm and an associated reference CSI-RS received power of X dBm are provided to the UE 116. In some embodiments, the transceiver 310 may receive the reference RSRP value from the gNB 102, for example, via a system information block. The reference RSRP value may be stored in the memory 360.

[0177] In operation 1020, UE 116 measures the RSRP value of (Y+Y1) dBm and the CSI-RS received power of (X+X1) dBm. In operation 1030, UE 116 determines the transmission power adjustment Δ RSRP UE 116 can use Δ RSRP =(X+X1-Y-Y1) to determine the transmission power adjustment Δ RSRP .

[0178] In operation 1040, UE 116 increases the determined transmission power adjustment Δ RSRP In various implementations, after adjusting the transmit power, the transceiver 310 may send a transmission using the adjusted transmit power.

[0179] In some implementations, the UE 116 may maintain two RSRP measurements. The UE 116 obtains the first RSRP measurement RSRP by filtering a first number of first RS measurements in a first time period. 1UE 116 obtains a second RSRP measurement RSRP by filtering a second number of second RS measurements in a second time period that is less than the first time period. 2 . The first measurement and the second measurement may be received based on different signals, such as an SS / PBCH block for the first RS measurement and a CSI-RS for the second RS measurement. For example, a second number of CSI-RS receptions for determining the second RSRP measurement may be provided by gNB 102 to UE 116. For example, the second number of CSI-RS receptions for determining the second RSRP measurement may be predetermined in system operation as a function of a CSI-RS reception period. For example, for a CSI-RS reception period of 10 microseconds, the second number may be 2, and for a CSI-RS reception period of 40 microseconds, the second number may be 1. UE 116 may use a difference Δ between the second RSRP and the first RSRP RSRP =RSRP 2 -RSRP 1 (in dBm) to adjust the transmission power.

[0180] In another embodiment, as follows Fig.11 As further described in , if UE 116 does not receive a TPC command from serving gNB 102 for a period of time, UE 116 may reset the closed-loop power control value of the power control process. In particular, UE 116 may reset the closed-loop power control value to zero or to a predetermined value and save it in OS program 361 or provide it to UE 116 by serving gNB 102 through higher layer signaling. For example, for PUSCH transmission, UE 116 may reset the value f b，f，c (i, l) is reset to zero. The time period may be provided to UE 116 by gNB 102, for example, via higher layer signaling, and may be stored in memory 360. Each time UE 116 receives a TPC command, UE 116 starts a timer and increments the timer for a predetermined or configured time interval, such as a number of symbols or a number of slots or a number of milliseconds. When the closed-loop power control value remains reset, for example, when UE 116 does not receive any TPC command, UE 116 determines the transmission power of the channel or signal based solely on the open-loop power control parameters and parameters related to channel / signal transmission, for example, as in Equation 3 or Equation 4. In some embodiments, the closed-loop power control component value may be configured, for example, by the gNB, to be always disabled.

[0181] In one example, each closed-loop power control component for PUSCH, PUCCH or SRS transmission has a separate timer. When each closed-loop power control component has a separate timer, the TPC command may only apply to one of the PUSCH, PUCCH or SRS transmissions. In another example, for the closed-loop power control components for PUSCH, PUCCH or SRS transmissions, the timer is common, and the timer is jointly set by UE 116 receiving a TPC command timer for any one of the PUSCH, PUCCH or SRS transmissions, and the timer expires jointly by setting each closed-loop power control component for PUSCH, PUCCH or SRS transmission to zero at the same time. When the timer is common for the closed-loop power control component, the TPC command may also apply to all PUSCH, PUCCH and SRS transmissions. In some embodiments, the timer may be set jointly for some transmissions, and the timer may be set separately for some other transmissions. For example, a timer may be set jointly for PUSCH transmission and SRS transmission, and a timer may be set separately for PUCCH transmission.

[0182] Fig.11 A method of resetting a closed loop power control (CLPC) parameter value according to various embodiments of the present disclosure is shown. Fig.11 The method shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNBs 101 to 103. Other implementations may be used without departing from the scope of the present disclosure.

[0183] In operation 1110, the transceiver 310 receives a TPC command for PUSCH or SRS transmission in a time slot. For example, the transceiver 310 may receive the TPC command from the gNB 102.

[0184] At operation 1120, after receiving the TPC command, the UE 116 resets the timer associated with the CLPC parameters for PUSCH and SRS transmissions. At operation 1130, for each next time slot of a number of time slots equal to the maximum timer value, the UE 116 determines whether a TPC command for PUSCH or SRS transmission is received. The transceiver 310 may receive the maximum timer value from the gNB 102 via higher layer signaling, or the maximum timer value may be stored in the memory 360.

[0185] If the UE 116 receives a TPC command for PUSCH or SRS transmission from the plurality of next time slots, the UE 116 returns to operation 1120 and resets the timer in that time slot. If the UE 116 does not receive a TPC command for PUSCH or SRS transmission in a time slot in the plurality of next time slots, the UE 116 increments the timer after each time slot in the plurality of next time slots and resets the closed-loop power control parameter value to zero or to a value provided by the serving gNB 102 after the plurality of next time slots.

[0186] Throughout the method 1100, the UE 116 maintains the current timer value until a TPC command is received for a PUSCH or SRS transmission. In response to receiving the TPC command, the UE 116 resets the time value to zero.

[0187] In another embodiment, Fig.12 As further described in, when channel / signal transmission is associated with a DCI format, depending on the associated DCI format, UE 116 may include different power control procedures for the same channel / signal type; or when channel / signal transmission is configured through higher layer signaling, depending on the indication in the parameter set, UE 116 may include different power control procedures for the same channel / signal type.

[0188] For example, when a PUCCH transmission with HARQ-ACK information is sent in response to a PDSCH reception scheduled by a first DCI format, the UE 116 may determine the PUCCH transmission power using a first power control process. When a PUCCH transmission with HARQ-ACK information is sent in response to a PDSCH reception scheduled by a second DCI format, the UE 116 may determine the PUCCH transmission power using a second power control process. The first power control process and the second power control process may have different open-loop power control parameter values, or may have different closed-loop power control processes (including the absence of a closed-loop power control process for the second power control process). For example, the second closed-loop power control process may not use a TPC command provided by a UE group common DCI format (such as DCI format 2_2), for example, because the target BLER may be greater than the reliability required for the channel / signal reception associated with the second power control process. The UE 116 may identify the first DCI format and the second DCI format based on various parameters (such as the corresponding RNTI, size, or identification field value that associates the first DCI format and the second DCI format with the first power control process and the second power control process, respectively).

[0189] Fig.12 A method for determining whether to use a closed-loop power control parameter value to adjust transmission power according to various embodiments of the present disclosure is shown. Fig.12 The method 1200 shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNBs 101 to 103. Other implementations may be used without departing from the scope of the present disclosure.

[0190] In operation 1210, UE 116 detects a DCI format for scheduling PUSCH transmission, or a DCI format for triggering PUCCH or SRS transmission. In operation 1220, UE 116 determines whether the DCI format has a first priority type. In some embodiments, UE 116 further determines whether the DCI format has a second priority type. If UE 116 determines that the DCI format is the first priority type, UE 116 performs operation 1230. If UE 116 determines that the DCI format is not the first priority type, UE 116 performs operation 1240.

[0191] In operation 1230, based on the UE 116 determining that the DCI format is of the first priority type, the UE 116 obtains a TPC command field value of the first DCI format to adjust PUSCH, PUCCH or SRS transmission power through associated updates of closed-loop power control component values.

[0192] In operation 1240, UE 116 does not use the closed loop power control component value to adjust PUSCH, PUCCH, or SRS transmission power. In various implementations, operation 1240 may be performed based on UE 116 determining that the DCI format is not a first priority type or based on UE 116 determining that the DCI format is a second priority type. In some implementations, the second DCI format does not include a TPC command field.

[0193] Various embodiments of the present disclosure enable power ramping of configured transmissions from a UE, such as PUCCH transmissions with SR or CG-PUSCH transmissions. For SR transmissions associated with MBB services, during a communication session, a UE, such as UE 116, has regular transmissions to or receptions from a gNB, such as gNB 102, to exchange large files. Conversely, for URLLC services, SR transmissions may occur without any prior reception from or transmission to gNB 102 for a period of time sufficient to render the UE 116 power control settings obsolete. Similarly, CG-PUSCH transmissions may occur without any prior reception from or transmission to gNB 102 for a period of time sufficient to render the UE 116 power control settings obsolete.

[0194] When UE 116 transmits a PUCCH providing an SR associated with a service, wherein UE 116 has regular transmissions to or regular receptions from gNB 102, and UE 116 does not detect a DCI format scheduling a PUSCH transmission after the PUCCH transmission with the SR, UE 116 retransmits the PUCCH providing the SR at the next SR transmission opportunity without any UE-initiated power adjustment. However, when UE 116 transmits a PUCCH with an SR for PUSCH scheduling, the corresponding PUCCH transmission power setting may be outdated. UE 116 may not detect a subsequent DCI format scheduling a PUSCH transmission due to insufficient received power of the PUCCH causing the gNB 102 to not detect the SR. Therefore, various embodiments of the present disclosure recognize the benefit of UE 116 applying a power ramp to the next PUCCH transmission with the SR.

[0195] The power ramp step for PUCCH transmission with SR may be provided to UE 116 separately from the power ramp step for PRACH transmission using system information higher layer signaling using, for example, UE-specific higher layer signaling. UE 116 may apply the power ramp at the next SR transmission opportunity (e.g., when UE 116 retransmits the SR) or after multiple SR transmission opportunities provided to UE 116 by gNB 102 through higher layer signaling. In some embodiments, UE 116 may also apply the power ramp step for PUCCH transmission if the SR is multiplexed with other UCI in PUCCH. In other embodiments, UE 116 may discard the other UCI and send a PUCCH including only the positive SR.

[0196] In some embodiments, the power ramp for retransmission may also be applied to CB-PUSCH transmissions when UE 116 does not detect signaling from gNB 102 that provides HARQ-ACK information in response to TB reception associated with a HARQ process in CB-PUSCH. For example, when UE 116 detects a DCI format that schedules retransmission of the same TB (for a HARQ process), or when UE 116 detects a DCI format that schedules transmission of a new TB for a HARQ process, the HARQ-ACK information may be provided by explicit signaling or by implicit signaling. The power ramp step for CG-PUSCH transmission may be a step provided to UE 116, for example, the power ramp step for PUCCH transmission with SR or for PRACH transmission may be provided to UE 116 separately. UE 116 may apply the power ramp step at the next CG-PUSCH transmission opportunity, or after a number of CG-PUSCH transmission opportunities indicated by gNB 102 to UE 116 (if provided).

[0197] For example, Fig.13 A method for sending an SR according to various embodiments of the present disclosure is shown. Fig.13 The method 1300 shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNBs 101 to 103. Other implementations may be used without departing from the scope of the present disclosure.

[0198] In operation 1310, the transceiver 310 transmits a PUCCH with a positive SR. The UE 116 may determine the PUCCH transmission power by using a power control formula (such as Equation 4 or Equation 6).

[0199] At operation 1320, the UE 116 determines whether a DCI format scheduling PUSCH transmission is detected before the next SR transmission. If a DCI format scheduling PUSCH transmission is not detected, the UE 116 proceeds to operation 1330. If a DCI format scheduling PUSCH transmission is detected, the UE 116 proceeds to operation 1340.

[0200] In operation 1330, based on the UE 116 not detecting the DCI format scheduling PUSCH transmission before the next SR transmission opportunity, the transceiver 310 retransmits the SR at the next SR transmission opportunity by increasing the corresponding PUCCH transmission power by a value pre-provided by the gNB 102. For example, the value may be provided by the gNB 102 through a higher layer parameter powerRampingStep_SR.

[0201] In operation 1340, based on UE 116 detecting a DCI format scheduling PUSCH transmission before the next SR transmission opportunity, UE 116 does not increase the corresponding PUCCH transmission power by the value provided by gNB 102. Therefore, transceiver 310 does not retransmit the SR with increased transmission power.

[0202] In various implementations, UE 116 may maintain the same closed-loop power control component value for PUSCH and PUCCH transmissions on the same serving cell. For example, as described above in Equations 3 and 4, f b，f，c (i, l) can be combined with g b，f，c (i, l) are the same. Then, when UE 116 detects the first DCI format, the first DCI format schedules PDSCH reception and includes a TPC command field with a PUCCH transmission power value adjusted with HARQ-ACK information in response to a TB in the PDSCH, and UE 116 also applies the TPC command value for PUSCH transmission. The PUSCH transmission may be configured by RRC, such as CG-PUSCH, or scheduled by a second DCI format. When the PUSCH transmission is configured / scheduled by the second DCI format, the second DCI format may include a TPC command field with a value for adjusting the PUSCH transmission power. UE 116 applies the value of the TPC command of the first DCI format and the value of the TPC command of the second DCI format to adjust the PUSCH transmission power scheduled by the second DCI format. UE 116 may also be configured with an RNTI for a DCI format that provides a TPC command and does not schedule PDSCH reception or PUSCH transmission from UE 116, and UE 116 may apply the TPC command to determine the PUSCH transmission and PUCCH transmission power. In some implementations, the UE 116 may also apply TPC commands to determine the SRS transmission power.

[0203] Fig.14 A method for adjusting PUSCH transmission power according to various embodiments of the present disclosure is shown. More specifically, Fig.14 A method 1400 of applying a TPC command value if a DCI format schedules PDSCH reception to adjust PUSCH transmission power according to various embodiments of the present disclosure is shown. Fig.14The method 1400 shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNB101 to gNB 103. Other implementations may be used without departing from the scope of the present disclosure.

[0204] In operation 1410, the UE 116 detects a DCI format that schedules PDSCH reception and includes a TPC command field having a value. In operation 1420, the UE 116 determines an adjustment to the PUSCH transmission power using the value of the TPC command field detected in operation 1410. In operation 1430, the transceiver 310 transmits the PUCCH using the adjusted power determined in operation 1420.

[0205] In some embodiments, the UE 116 may be configured with multiple resources for PUCCH transmissions providing SR. Each resource may be associated with a different power for PUCCH transmissions providing SR. The power of each resource may be determined as an offset relative to an open-loop power control component value used by the UE 116 to determine the PUCCH transmission power, which may be included in the resource configuration for the PUCCH transmission. The UE 116 may select a resource from the multiple resources based on the power determined by the UE 116 for the PUCCH transmission including the SR. For example, the UE 116 may select a resource associated with a PUCCH transmission power with SR that has a minimum difference from the power determined by the UE 116 for the transmission of the PUCCH with SR. For example, the UE 116 may select a resource associated with a PUCCH transmission power that is the next greater power of the power determined by the UE 116 for the PUCCH transmission with SR.

[0206] The UE 116 may also provide additional information in the PUCCH transmission with the SR. For example, the UE 116 may indicate whether the power of the PUSCH transmission that the UE 116 desires to be scheduled in response to the SR transmission needs to be greater or less than the power determined by the open-loop power control parameter value for the PUSCH transmission. When the UE 116 sends an additional bit in the PUCCH along with the SR, the UE 116 may indicate whether the PUSCH transmission power needs to be greater or less than the power determined by the open-loop power control parameter value for the PUSCH transmission.

[0207] The amount of increase or decrease in PUSCH transmission power relative to the power determined according to the open loop power control parameter value for PUSCH transmission may be provided by the serving gNB 102 to the UE 116 via higher layer signaling. For example, if the power determined according to the open loop power control parameter value for PUSCH transmission is less than at least half of the indicated increase in power determined by the UE 116 for PUSCH transmission (the exact amount may also be configured to the UE 116 by the gNB 102), then the UE 116 may indicate an increase in power. When the UE 116 sends more than one additional bit in the PUCCH with the SR, the UE 116 may indicate one of a plurality of values ​​provided by the serving gNB 102 to the UE 116 via higher layer signaling for increasing or decreasing the PUSCH transmission power relative to the power determined according to the open loop power control parameter value for PUSCH transmission.

[0208] Various embodiments of the present disclosure enable a UE to adjust transmit power using a TPC command value in response to intra-cell interference. For example, a PUSCH transmission from a first UE (such as UE 116) on a serving cell may be interfered with by a transmission from a second UE (e.g., UE 115) on the serving cell. A gNB (such as gNB 102) that schedules the PUSCH transmission from the first UE 116 is aware of the interference from the second UE 115 and may therefore use the TPC command field value in the DCI format that schedules the PUSCH transmission to adjust the PUSCH transmission power.

[0209] PUSCH transmissions from a UE on a serving cell and SRS transmissions from a UE on a serving cell may use the same closed-loop power control component to enable the serving gNB to perform link adaptation for PUSCH transmissions from the UE using SRS transmissions from the UE. When the TPC command in the DCI format that schedules PUSCH transmissions also considers inter-UE interference on the serving cell, in addition to considering channel fading variations, the TPC command may be inaccurate for SRS transmissions that are typically not subject to inter-UE interference or may be subject to different inter-UE interference than PUSCH transmissions from the UE. Therefore, various embodiments of the present disclosure enable transmission power adjustment to avoid intra-cell interference.

[0210] In order to enable power adjustment for PUSCH transmission that takes into account inter-UE interference, while allowing the use of the same closed-loop power control component to determine PUSCH transmission and SRS transmission power, the present disclosure recognizes that, for a DCI format that schedules PUSCH transmission, a TPC command field that adjusts PUSCH transmission power according to the degree of inter-UE interference is independent of a TPC command field that adjusts PUSCH transmission power according to channel fading changes. Equivalently, the same TPC command field can be used, and the first bit of the TPC command field is used to indicate a first adjustment of PUSCH transmission power without incorporating the first adjustment into the closed-loop power control component, and the second bit of the TPC command field is used to indicate a second adjustment of PUSCH transmission power, while incorporating the second adjustment into the closed-loop power control component.

[0211] For example, Fig.15 A method for adjusting PUSCH transmission power according to various embodiments of the present disclosure is shown. More specifically, Fig.15 A method 1500 is shown for adjusting PUSCH transmission power using two TPC command fields in a DCI format for scheduling PUSCH transmission according to various embodiments of the present disclosure. Fig.15 The method shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNBs 101 to 103. Other implementations may be used without departing from the scope of the present disclosure.

[0212] In operation 1510, the UE 116 detects a DCI format that schedules PUSCH transmission. The DCI format includes a first TPC command field and a second TPC command field.

[0213] In operation 1520, UE 116 uses the value of the first TPC command field to adjust the PUSCH transmission power. In addition, UE 116 does not use the value of the first TPC command field to update the closed-loop power control component of the accumulated TPC command value. In operation 1530, UE 116 uses the value of the second TPC command field to adjust the PUSCH transmission power. In addition, UE 116 does not use the value of the second TPC command field to update the closed-loop power control component of the accumulated TPC command value. In some embodiments, UE 116 may perform operations 1520 and 1530 in sequence. In other embodiments, UE 116 may perform operations 1520 and 1530 simultaneously.

[0214] In operation 1540, based on the adjusted PUSCH transmission power using the first TPC command field value and the second TPC command field value, the transceiver 310 transmits the PUSCH at the determined adjusted transmission power.

[0215] Various embodiments of the present disclosure enable determination of a PUCCH transmission power including multiple UCI types. For example, a gNB (such as gNB 102) may provide a power offset for a PUCCH transmission to a UE (such as UE 116) based on the UCI type included in the PUCCH transmission. For example, for a PUCCH transmission including HARQ-ACK information or an SR, the gNB 102 may target a first BLER, such as 1%, and for a PUCCH transmission including CSI, the gNB 102 may target a second BLER, such as 5%. For example, a PUCCH transmission with CSI may include a first predetermined number of information bits and, therefore, be associated with a first coding gain, while a SR transmission may include a second predetermined number of information bits (such as 1 bit) and, therefore, be associated with a second coding gain. Then, even when the target BLER for the CSI and the SR is the same, different transmission powers may be required to account for the different coding gains.

[0216] UE 116 may multiplex different UCI types with different PUCCH transmission power settings. UE 116 may also use a setting that results in a maximum PUCCH transmission power to achieve a BLER for the UCI type that requires the lowest BLER. For example, UE 116 may multiplex HARQ-ACK information and CSI in a PUCCH transmission, wherein when the PUCCH transmission includes only HARQ-ACK information, the PUCCH transmission requires a first power to achieve a first target BLER; and when the PUCCH transmission includes only CSI, the PUCCH transmission requires a second power to achieve a second target BLER. When the first power is greater than the second power, UE 116 may send the PUCCH using a power control setting (such as an open-loop power control parameter and any UCI-specific power offset) for the first power.

[0217] For example, Fig.16 A method for adjusting PUCCH transmission power according to various embodiments of the present disclosure is shown. More specifically, Fig.16 A method 1600 of applying a TPC command value if a DCI format schedules PDCCH reception to adjust PUCCH transmission power according to various embodiments of the present disclosure is shown. Fig.16 The method shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1The present invention is performed by one or more of the gNB101 to gNB 103. Other implementations may be used without departing from the scope of the present disclosure.

[0218] In operation 1610, UE 116 multiplexes a first UCI type and a second UCI type in a PUCCH. The first UCI type includes a first configuration value of at least one parameter of an open loop power control (OL PC) component for determining PUCCH transmission power. The second UCI type includes a second configuration value for at least one parameter.

[0219] In operation 1620, the UE 116 determines whether the first configuration value or the second configuration value results in a larger value of the OL PC component. In operation 1630, the transceiver 310 transmits the PUCCH at a power determined by using the larger value of the OL PC component determined in operation 1620.

[0220] As described herein, a UE may send a Scheduling Request (SR) to indicate to the serving gNB that the UE has data in its buffer for transmission to the gNB. The UE sends along with the SR parameters provided to the UE by the gNB, such as a PUCCH resource configuration or a time period for PUCCH transmissions providing the SR. In some embodiments, the parameters for each UE may be unique. Upon detecting the SR, the gNB may identify which UE has sent the SR and subsequently schedule the UE for PUSCH transmission, where the UE may provide more information about the UE's buffer status via a Buffer Status Report (BSR).

[0221] Various embodiments of the present disclosure recognize that for unpaired spectrum operation, such as in a frequency band designated for time domain duplexing (TDD), depending on the corresponding configuration of the higher layers or depending on the corresponding scheduling in the DCI format provided by the PDCCH, some (including none or all) symbols in a time slot may be used for transmission by the UE, some symbols in a time slot may be used for transmission by the UE, and some symbols may have flexible directions and may be used for reception by the UE or transmission by the UE. For example, the UE may provide, via the higher layer parameter tdd-UL-DL-ConfigurationCommon, a time slot format for each time slot over a plurality of time slots as indicated by tdd-UL-DL-ConfigurationCommon. A higher layer parameter tdd-UL-DL-ConfigDedicated may also be provided to the UE, which only covers the flexible symbols for each time slot over the number of time slots provided by tdd-UL-DL-ConfigurationCommon.

[0222] In some embodiments, the UE may also be configured to monitor a DCI format (such as DCI format 2_0) to obtain a slot format indicator (SFI) and determine whether a flexible symbol in a slot is a DL symbol or a UL symbol. For a flexible symbol in a slot indicated as a DL symbol by the SFI, the UE cancels periodic SRS transmission only on the flexible symbol, or cancels PUSCH / PUCCH / PRACH transmission in a symbol including the symbol, that is, the UE completely cancels PUSCH / PUCCH / PRACH transmission according to the corresponding processing timeline. For example, for a flexible symbol in a slot indicated as a UL symbol by the SFI, the UE may cancel periodic CSI-RS reception or PDSCH / PDCCH reception in a symbol including the symbol.

[0223] As described herein, URLLC services may be sporadic and use lower latency than MBB services. Data reception may be accompanied by a subsequent HARQ-ACK information transmission in the PUCCH from the UE to indicate whether the UE correctly detected the associated TB. Data transmission may be enabled by an SR transmission from the UE and subsequent detection of a UL DCI format (UL grant) scheduling an associated PUSCH transmission from the UE (grant-based PUSCH or GB-PUSCH), or may be enabled by a configuration grant (CG-PUSCH) where the UE may send PUSCH using one resource configuration from one or more resource configuration sets previously provided to the UE by the gNB. TBs or UCI may be sent immediately once available at the physical layer.

[0224] Various embodiments of the present disclosure recognize the challenges of operating URLLC in unpaired spectrum. Not all symbols in one timeslot or even one or more next timeslots may be available for PDCCH / PDSCH reception or PUCCH / PUSCH transmission. For example, when the gNB needs to schedule a PDSCH transmission with URLLC data to a UE in a timeslot, additional delay occurs when the first symbol of the timeslot where the PDSCH transmission can occur is indicated by tdd-UL-DL-ConfigurationCommon as a UL symbol. Similarly, when the gNB schedules a PUSCH transmission with URLLC data from a UE in a timeslot, additional delay occurs for the PUSCH transmission when the first symbol of the timeslot where the PUSCH transmission can occur is indicated as a DL symbol.

[0225] In response to the UE receiving a TB, a timing indication of the PUCCH transmission with HARQ-ACK information from the UE may be provided by the value of the PDSCH to HARQ Feedback Timing Indicator field of the DCI format that schedules the PDSCH reception. For services with low latency requirements, such as for URLLC, the granularity of the value is provided in multiple symbols in a timeslot rather than in a timeslot. For operation in unpaired spectrum, since not all symbols in a multiple of a timeslot are indicated by tdd-UL-DL-ConfigurationCommon as flexible symbols or UL symbols, the timing indication may have a reduced range unless the size of the PDSCH to HARQ Feedback Timing Indicator field is increased.

[0226] When the gNB adapts the direction of the flexible symbol to a DL symbol or a UL symbol using, for example, the corresponding SFI field in DCI format 2_0 on the cell, the UE with transmission or reception configured by higher layer signaling monitors the candidate PDCCH associated with DCI format 2_0. The UE monitors the candidate PDCCH for detecting DCI format 2_0, and obtains the slot format including DL symbols, UL symbols, and flexible / reserved symbols of the slot based on the value of the SFI field in DCI format 2_0. For UE transmission or reception configured by higher layers on the serving cell, when the value of the SFI field in DCI format 2_0 for the serving cell indicates that at least one corresponding symbol is a DL symbol or a UL symbol, or a flexible / reserved symbol (if a symbol indicated as flexible by tdd-UL-DL-ConfigurationCommon is also indicated as flexible by the value of the SFI field, the symbol is considered to be unavailable / reserved), the UE may cancel the transmission or reception. For SRS transmission, the UE may cancel SRS transmission only in symbols indicated as DL or flexible by the SFI field in DCI format 2_0 for the serving cell. However, for CG-PUSCH transmissions with low latency requirements, cancellation may result in failure to meet the latency requirement.

[0227] For PUSCH transmissions scheduled by a DCI format (GB-PUSCH transmissions), the Time Domain Resource Allocation (TDRA) field value in the DCI format is not expected to include symbols indicated as DL symbols by tdd-UL-DL-ConfigurationCommon. However, for GB-PUSCH transmissions with low latency requirements, the first available UL symbol for GB-PUSCH may be after several DL symbols and may not meet the low latency requirement for GB-PUSCH transmissions.

[0228] For GB-PUSCH transmission with low latency requirement, all frequency resources in the BWP of the GB-PUSCH transmission may be used by ongoing transmissions from other UEs, such as from UEs with PUSCH transmissions associated with the MBB service type, or for other UL transmissions such as SRS, PUCCH, or PRACH. Similarly, for PDSCH reception with low latency requirement, all immediately available symbols of the slot may be used by ongoing UL transmissions. To cancel an ongoing UL transmission, the serving gNB may send a DCI format such as a UE group common DCI format, referred to as DCI format 2_4 for brevity, in the PDCCH at a location determined according to the CSS, including a UL Cancellation Indicator field that provides information on the time (symbols) and frequency (RB) resources that the UE needs to cancel the corresponding ongoing transmission. However, since DCI format 2_4 is intended to support PDSCH reception or PUSCH transmission with low latency requirement, the gNB may need to send PDCCH with DCI format 2_4 with a periodicity less than one slot. Therefore, the UE may consume power for DL ​​reception in each time slot in which the UE has UL transmission.

[0229] Therefore, various embodiments of the present disclosure recognize the need for a timing indication of a PUCCH transmission with HARQ-ACK information from a UE operating in an unpaired spectrum without increasing the size of the PDSCH to HARQ feedback timing indicator field in the DCI format received by the corresponding PDSCH scheduled by the UE. Various embodiments of the present disclosure recognize the need for the UE to send a CG-PUSCH in a time slot when some symbols of the time slot are indicated as DL symbols or flexible symbols by the SFI field value in DCI format 2_0, and increase the probability that the UE can send a CG-PUSCH in a time slot operating in an unpaired spectrum.

[0230] In addition, various embodiments of the present disclosure recognize that when some symbols of a time slot are configured as DL symbols by higher layers, the gNB is required to schedule GB-PUSCH transmissions from the UE in the time slot while meeting the waiting time requirements for the GB-PUSCH transmissions, and enable the gNB to configure the UE to monitor the PDCCH of DCI format 2_4 depending on the type of communication between the UE and the gNB.

[0231] As described herein, a DCI format that schedules PDSCH reception or SPS PDSCH release by a UE may be referred to as a DL DCI format. A DCI format that schedules PUSCH transmission from a UE may be referred to as a UL DCI format. A DL DCI format may schedule PDSCH reception or indicate SPS PDSCH release. Although the present disclosure describes PDSCH reception, the embodiments may also be applied to SPS PDSCH release.

[0232] Similarly, as described herein, the higher layer parameter tdd-UL-DL-ConfigurationCommon is referred to below, but the higher layer parameter tdd-UL-DL-ConfigurationDedicated may also apply. A first DCI format that schedules a first PDSCH reception or a first PUSCH transmission associated with a TB requiring low latency (first priority) and a second DCI format that schedules a second PDSCH reception or a second PUSCH transmission associated with a TB having relaxed latency (second priority) may be distinguished from a second DCI format using, for example, a flag, a different RNTI, or a different size.

[0233] In some embodiments, the value of the priority field in the DCI format for scheduling PDSCH reception can be mapped to the HARQ feedback timing indicator field in the DCI format for scheduling PDSCH reception, which indicates the transmission time of the PUCCH including HARQ-ACK information in response to the PDSCH reception. For PDSCH reception associated with a service type with low latency requirements, a UE (such as UE 116) needs to provide corresponding HARQ-ACK information to a serving gNB (such as gNB 102), which also has low latency to enable gNB 102 to retransmit the PDSCH when needed. In some embodiments, this is referred to as a negative acknowledgement. Therefore, the time granularity of the PDSCH to HARQ feedback timing indicator field in the DCI format for scheduling PDSCH reception can be provided in units of multiple symbols rather than time slots, such as when the PDSCH reception is associated with a service with relaxed latency requirements. For example, when PDSCH reception is associated with a service with relaxed latency requirements, the number of symbols may be provided by the gNB 102 to the UE 116 via higher layer signaling. As described below, the number of symbols is denoted as N, where N ≥ 1.

[0234] For a PDSCH to HARQ feedback timing indicator field comprising, for example, 3 bits, a total of 8 consecutive periods of N symbols may be indicated for PUCCH transmission within a period of N symbols. For operation in unpaired spectrum, the slot format or slot structure may include DL symbols, UL symbols, and flexible (F) symbols. Therefore, some of the 8 consecutive periods of N symbols may include only DL symbols or a mix of DL, UL, and flexible symbols. In addition, when N is small (such as 2 or 4), the reception reliability of the HARQ-ACK information in the PUCCH may be significantly reduced even when 1 symbol is not available (for example, because 1 symbol is indicated as a DL symbol by tdd-UL-DL-ConfigurationCommon in the corresponding slot). Assuming that the PDSCH to HARQ feedback timing indicator field includes M bits in the DCI format, and starting from a period of N symbols overlapping with the last symbol received by the relevant PDSCH, or starting from a period of N symbols after a period of N symbols overlapping with the last symbol received by the relevant PDSCH, 2 are indicated. M Therefore, various embodiments of the present disclosure are intended to improve the reception reliability of HARQ-ACK information or increase the applicability of the PDSCH to HARQ feedback timing indicator field value.

[0235] For example, when the PUCCH resource indicator field in the DCI format for scheduling PDSCH reception indicates PUCCH resources in a timeslot that include symbols indicated as DL symbols by tdd-UL-DL-ConfigurationCommon, the UE 116 may assume that the PUCCH resource indicator field overrides the indication made by tdd-UL-DL-ConfigurationCommon. The UE 116 then transmits the PUCCH in the indicated resources. The gNB 102 may suspend transmissions in at least the DL symbols included in the indicated PUCCH resources. An exception may be DL symbols for which the UE 116 is also indicated as SS / PBCH block transmissions. In DL symbols for which the UE 116 is indicated as SS / PBCH block transmissions, the UE 116 may assume that the indicated PUCCH resources are invalid and discard the PUCCH transmissions. For example, the UE may assume that the PUCCH resource indicator field does not indicate a plurality of consecutive symbols, but rather indicates only UL symbols, or UL and flexible symbols as provided by tdd-UL-DL-ConfigurationCommonsu.

[0236] In some embodiments, a PUCCH transmission from UE 116 may be sent in response to PDSCH reception scheduled by a higher layer configuration or in response to another DCI format (such as a DCI format associated with a service with relaxed latency requirements). In these embodiments, UE 116 may drop a PUCCH transmission when a plurality of corresponding symbols in a period of N symbols include DL symbols or include symbols indicated as flexible by the SFI field in DCI format 2_0.

[0237] For example, Fig.17 The process of transmitting PUCCH according to various embodiments of the present disclosure is shown. Fig.17 The process shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding process may be implemented by Figure 1 One or more of the gNBs 101 to 103 are implemented. Other implementations may be used without departing from the scope of the present disclosure.

[0238] A UE, such as UE 116, may be provided with a format for a plurality of time slots and obtain a direction (DL, UL, F) for a plurality of symbols 1710. In some implementations, the UE 116 may be provided with a format via a higher layer parameter such as tdd-UL-DL-ConfigurationCommon received from a gNB such as gNB 102. The format may be stored in memory 360. The UE 116 may receive a PDCCH 1720 and detect a DCI format scheduling a PDSCH reception 1730. For example, the UE 116 may receive the PDCCH 1720 from a gNB such as gNB 102. The DCI format may include a PDSCH to HARQ feedback timing indicator field that indicates to the UE 116 to send a PUCCH 1740 with HARQ-ACK information for a TB in the PDSCH reception.

[0239] Although the symbols of the PUCCH transmission are indicated as DL symbols by tdd-UL-DL-ConfigurationCommon, the UE 116 may transmit the PUCCH. In some embodiments, the gNB 102 does not transmit in the symbols of the PUCCH transmission from the UE 116 and does not transmit in at least one previous symbol to provide a gap for DL ​​to UL switching and to combat cross-link interference due to multipath propagation of the signals.

[0240] In another embodiment, the PUCCH resource indicator field in the DCI format may indicate a PUCCH resource including symbols indicated by tdd-UL-DL-ConfigurationCommon as DL symbols or flexible (F) symbols. In this embodiment, the UE 116 may assume that the PUCCH resource includes the same parameters as the indicated PUCCH resource, except that the number of corresponding symbols is reduced to avoid being indicated by tdd-UL-DL-ConfigurationCommon as DL symbols. In addition, the number of symbols may be reduced to provide a switching gap, such as by providing the UE 116 with a number provided by the serving gNB 102 through higher layer signaling.

[0241] In some embodiments, in order for the UE 116 to determine the reduced number of symbols for PUCCH transmission, the UE 116 first determines that the symbols are consecutive. In some embodiments, in order for the UE 116 to determine the reduced number of symbols for PUCCH transmission, the UE 116 is also configured with another PUCCH resource including the same number of symbols. The same condition may apply to PUCCH transmissions from the UE 116 in response to higher layer configuration.

[0242] In some embodiments, the UE 116 may determine the number of consecutive UL symbols used for PUCCH transmission in a period of N symbols based on a higher layer parameter tdd-UL-DL-ConfigurationCommon, independent of the slot format indicated by the SFI field in DCI format 2_0. This embodiment reduces the likelihood of errors that may result from the UE 116 failing to detect DCI format 2_0 and sending PUCCH with symbols different from those expected by the serving gNB 102. This embodiment may also reduce the likelihood of causality issues by indicating some of the symbols configured as F by tdd-UL-DL-ConfigurationCommon as DL, F, or UL, for example, when a DCI format associated with a PUCCH transmission (such as when the PUCCH transmission includes HARQ-ACK information) is received by the UE 116 before the DCI format 2_0 indicating the slot format.

[0243] For example, Fig.18 FIG. 18 shows a process of UE transmitting PUCCH according to various embodiments of the present disclosure. Although the process shown in FIG. 18 is described as being implemented by UE 116, it can be implemented in one or more of UE 111 to UE 116, and the corresponding process can be implemented by Figure 1 One or more of the gNBs 101 to 103 are implemented. Other implementations may be used without departing from the scope of the present disclosure.

[0244] A classification for four symbols as DL, F, and UL 1810 is provided to a UE, such as UE 116. The classification may be provided to UE 116 via a higher layer parameter tdd-UL-DL-ConfigurationCommon received from a gNB, such as gNB 102. The classification may be stored in memory 360. UE 116 detects a DCI format that schedules PDSCH reception and includes a PDSCH to HARQ feedback timing indicator field. The timing indicator field has a value that indicates to UE 116 that a PUCCH is transmitted in a symbol period that includes four symbols, and also includes a PUCCH resource indicator field that indicates to UE 116 that a PUCCH resource includes four symbols. UE 116 reduces the number of symbols of the PUCCH transmission 1820 to the last two UL symbols.

[0245] In another embodiment, a period with no valid PUCCH resources may be excluded from a period with N symbols indicated by the value of the PDSCH to HARQ Feedback Timing Indicator field. For example, based on the slot format of multiple slots indicated by tdd-UL-DL-ConfigurationCommon and based on the PUCCH resource set provided to the UE 116 by the serving gNB 102 through higher layer signaling, the UE 116 may exclude a slot that does not include a number of consecutive UL or flexible symbols that is at least equal to the minimum number of symbols of the PUCCH resources in the PUCCH resource set. For example, when the minimum number of symbols of the PUCCH resources in the PUCCH resource set is 2, the UE 116 may exclude a period with N symbols that includes only DL symbols, or does not include at least 2 consecutive UL or at least 2 consecutive flexible symbols and UL symbols. The UE 116 may assume that the PDSCH to HARQ Feedback Timing Indicator field value may indicate that such a slot is not included.

[0246] For example, a starting period of N symbols that may be indicated by a value of the PDSCH to HARQ feedback timing indicator field may have an index of zero. The PDSCH to HARQ feedback timing indicator field may indicate one of eight periods of N symbols, and the period of N symbols indexed at 2 does not include a number of consecutive UL or flexible symbols that is at least equal to the minimum number of symbols of the PUCCH resources in the PUCCH resource set. Therefore, due to the exclusion of the period of N symbols indexed at 2, the UE 116 may assume that the eight values ​​of the PDSCH to HARQ feedback timing indicator field indicate periods of N symbols indexed at 0, 1, 3, 4, 5, 6, 7, 8, and 9.

[0247] For example, Fig.19The process of UE sending PUCCH according to various embodiments of the present disclosure is shown. Fig.19 The process shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding process may be implemented by Figure 1 One or more of the gNBs 101 to 103 are implemented. Other implementations may be used without departing from the scope of the present disclosure.

[0248] A UE, such as UE 116, may obtain a format and PUCCH resource set for 9 periods 1910 with N symbols indexed as 0, 1, 2, 3, 4, 5, 6, 7, 8. UE 116 may obtain the format and PUCCH resource set from a higher layer parameter tdd-UL-DL-ConfigurationCommon received from a gNB, such as gNB 102. The format may be stored in memory 360. The UE may determine that a period 1920 with index 2 includes a plurality of consecutive UL symbols or a plurality of consecutive flexible symbols and UL symbols that are less than a minimum number of symbols of PUCCH resources in a PUCCH resource set. UE 116 may consider that period 1920 with index 2 is not applicable for PUCCH transmission. For a DCI format that schedules PDSCH reception to UE 116 and includes a PDSCH to HARQ feedback timing indicator field, the value of the timing indicator field indicates a period with N symbols for PUCCH transmission of HARQ-ACK information for a TB received in a PUSCH, and UE 116 may interpret the values ​​0, 1, 2, 3, 4, 5, 6, 7 of the PDSCH to HARQ feedback timing indicator field as corresponding to periods with indices 0, 1, 3, 4, 5, 6, 7, 8, respectively.

[0249] In some embodiments, when the PUCCH resources in the first period having N symbols exceed less than the second number of symbols K 2 The first symbol number K 1 (Among them, K 2 For example, when provided to UE 116 by serving gNB 102 via higher layer signaling, UE 116 may repeat the PUCCH transmission in one or more additional periods of N symbols. For each repetition of the PUCCH transmission, the duration or number of symbols may be the same and equal to the first number of symbols K. 1 The number of repetitions can be determined as ceil(K 2 / K 1 ), where ceil(K 2 / K 1 ) is a ceiling function that rounds a number to its next higher integer.

[0250] In other embodiments, when the PUCCH resources in a symbol period include K 1 symbols, UE 116 can select the next cell (K) with N symbols. 2 / K 1 ) period, wherein UE 116 may repeat PUCCH transmissions in the same PUCCH resource in K 1 In some embodiments, multiple repetitions may be provided by the gNB 102 directly to the UE 116 via higher layer signaling.

[0251] For example, Fig. 20 A method for transmitting a PUCCH according to various embodiments of the present disclosure is shown. Fig. 20 The method 2000 shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNBs 101 to 103. Other implementations may be used without departing from the scope of the present disclosure.

[0252] In operation 2010, a UE (such as UE 116) is configured with K 2 UE 116 may receive K from a gNB (such as gNB 102) via higher layer signaling. 2 The number of symbols. K 2 The number of symbols may be stored in memory 360 .

[0253] In operation 2020, UE 116 detects a DCI format for scheduling PDSCH reception. The DCI format includes providing UE 116 with a K 1 The PUCCH resource indicator of the PUCCH resources of symbols is used to send HARQ-ACK information, which is a response to the TB reception in the PDSCH.

[0254] In operation 2030, UE 116 determines K 1 Is it less than K? 2 If K 1 Not less than K 2 , then UE 116 performs operation 2040. If K 1 Less than K 2 , then UE 116 performs operation 2050.

[0255] In operation 2040, in response to UE 116 determining K 1 Not less than K 2, the transceiver 310 sends the PUCCH in the PUCCH resource detected in operation 2020.

[0256] In operation 2050, in response to UE 116 determining K 1 Less than K 2 , the transceiver 310 sends a PUCCH in the PUCCH resource detected in operation 2020, and counts the total ceil(K 2 / K 1 ) PUCCH repetitions for PUCCH transmission. In some embodiments, the repetition of PUCCH transmission may be performed in a PUCCH comprising at least K 1 In some embodiments, in response to UE 116 determining K 1 Less than K 2 , UE 116 may increase the PUCCH transmission power by 10log 10 (K 2 / K 1 )dB. In some implementations, in response to UE 116 determining K 1 Less than K 2 , UE 116 may increase the number of RBs used for PUCCH transmission by ceil(K 2 / K 1 ).

[0257] In some implementations, the number of repetitions of a PUCCH transmission with HARQ-ACK information may be provided to the UE 116 via a field of a DCI format that schedules PDSCH reception associated with the PUCCH transmission. In these implementations, instead of using higher layer signaling for the UE 116 to determine whether to repeat a PUCCH transmission, the UE 116 directly receives the DCI format associated with the PUCCH transmission.

[0258] Various embodiments of the present disclosure alleviate the problem of a UE being unable to transmit CG-PUSCH. In some embodiments, for unpaired spectrum operation, the gNB may not be able to provide a number of UL symbols in each time slot that is equal to the number of symbols for CG-PUSCH transmission. In some embodiments, for paired spectrum operation and unpaired spectrum operation, the serving gNB may support multiple service types, and other UEs may be transmitting to the serving gNB in ​​resources where the UE is configured for CG-PUSCH transmission to the gNB.

[0259] For example, a gNB (such as gNB 102) may provide a UE (such as UE 116) with multiple resources in multiple cells for CG-PUSCH transmission. The configuration for CG-PUSCH transmission may be common to all cells or may be provided to UE 116 individually for each cell by gNB 102. In an embodiment where the cells are associated with different frequency bands, gNB 102 may use different time slot formats on different cells. For example, for a time slot in which the symbol set on a first cell includes only DL symbols, the symbol set on a second cell may include a number of UL symbols at least equal to the number of symbols for CG-PUSCH transmission on the second cell. Thus, UE 116 may select the second cell for CG-PUSCH transmission. In an embodiment where UE 116 may have resources for sending CG-PUSCH on more than one cell, UE 116 may select the cell with the smallest index.

[0260] In some embodiments, gNB 102 may configure multiple resources for CG-PUSCH transmission on a cell for a UE. In particular, each configuration may be separate and specific to a given cell. UE 116 may determine the direction of each symbol in a symbol set including DL, F, and UL on a cell based on a higher layer parameter tdd-UL-DL-ConfigurationCommon for the cell, or additionally based on a higher layer parameter tdd-UL-DL-ConfigurationDedicated, or based on a slot format indicated by an SFI field in a DCI format 2_0 for the cell.

[0261] Fig.21 A method for determining a cell to transmit a CG-PUSCH according to various embodiments of the present disclosure is shown. Fig.21 The method 2100 shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNBs 101 to 103. Other implementations may be used without departing from the scope of the present disclosure.

[0262] In operation 2110, one or more resource configurations for CG-PUSCH transmission on each cell in the cell set are provided to a UE, such as UE 116. UE 116 may be provided the one or more resource configurations by a gNB, such as gNB 102, via higher layer signaling. The one or more resource configurations may be stored in memory 360. For each configuration of CG-PUSCH transmission, a corresponding cell index may also be provided to UE 116. In operation 2120, UE 116 sets the cell index to the smallest cell index in the cell set.

[0263] In operation 2130, the UE 116 determines whether a symbol of any one of one or more CG-PUSCH transmission configurations on the cell with the smallest index is a UL symbol. In some embodiments, for example when indicated by tdd-UL-DL-ConfigurationCommon, the UE 116 may determine whether a symbol of any one of one or more configurations for CG-PUSCH transmission on the cell with the index is a UL symbol (or a UL symbol and a flexible symbol). In various embodiments, the UE 116 may determine operation 2130 per time slot or per symbol, such as determining each period with N symbols when the configuration of the CG-PUSCH transmission may be applicable to each period with N symbols. When the symbol configured for the CG-PUSCH transmission is a UL symbol on the cell with the smallest index, the UE 116 performs operation 2140. When the symbol configured for the CG-PUSCH transmission is not a UL symbol on the cell with the smallest index, the UE 116 performs operation 2150.

[0264] In operation 2140, the transceiver 310 transmits the CG-PUSCH on the symbol on the cell having the smallest index.

[0265] In operation 2150, UE 116 determines whether the cell index is the maximum cell index in the cell set. When the index is the maximum cell index in the cell set, method 2100 may terminate at operation 2160. When method 2100 terminates, UE 116 does not send any CG-PUSCH, or UE 116 may repeat the process by autonomously reducing the number of symbols of CG-PUSCH transmission relative to the number of symbols in each configuration of CG-PUSCH transmission (e.g., reducing it by one at a time) until the UE determines the cell with the largest number of UL symbols for CG-PUSCH transmission. For example, UE 116 may consider CG-PUSCH transmission to start at the second symbol of the configured resource, or to end at the second to last symbol of the configured resource.

[0266] When the UE 116 determines that the index is not the maximum cell index in the cell set, the UE 116 returns to operation 2130.

[0267] Various embodiments of the present disclosure provide UEs with improved TB reception reliability in CG-PUSCH. In these embodiments, a UE with UL CA capability can send the same TB in CG-PUSCH on multiple cells using the corresponding configuration of CG-PUSCH transmission. When the symbol is determined, for example, based on tdd-UL-DL-ConfigurationCommon, the UE can send the same TB when the symbol of the CG-PUSCH transmission on each cell from the multiple cells is a UL symbol (or a UL symbol and a flexible symbol). Similar embodiments provide UEs with improved TB reception reliability in CG-PUSCH.

[0268] A single DCI format may schedule multiple GB-PUSCH transmissions on multiple cells for the same TB, or multiple DCI formats may schedule multiple GB-PUSCH transmissions on corresponding multiple cells for the same TB. In an embodiment using a single DCI format, the one or more cells to which the UE sends the corresponding one or more CG-PUSCHs may be configured to the UE by the gNB through higher layer signaling, or may be indicated in the DCI format for scheduling CG-PUSCH transmissions on the cells. For example, the DCI format may include a 2-bit field that may indicate a cell set of four cell sets configured by the gNB for the UE to perform GB-PUSCH transmissions on each cell in the cell set. A single DCI format may also include other separate fields for GB-PUSCH transmissions on each cell in the cell set, such as separate indications for TPC commands or precoding indications, or separate indications for modulation and coding schemes (MCS). Other fields such as for HARQ process numbers, or for redundancy versions, or for NDI may be included only once in the DCI format and are common to all cells indicated for CG-PUSCH transmissions. The Frequency Domain Resource Allocation (FDRA) field or the Time Domain Resource Allocation (TDRA) field may also be common to all cells indicated.When the DCI format is used to schedule CG-PUSCH transmissions on multiple cells, other fields such as the BWP indicator may not be applicable.

[0269] For example, Fig. 22 A method of transmitting multiple CG-PUSCHs having the same TB on multiple cells according to various embodiments of the present disclosure is shown. Fig. 22 The method 2200 shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNBs 101 to 103. Other implementations may be used without departing from the scope of the present disclosure.

[0270] In operation 2210, a UE (such as UE 116) detects a DCI format that schedules PUSCH transmission. In operation 2220, UE 116 determines a cell set from a plurality of configured cell sets based on the indication of the DCI format detected in operation 2210. In operation 2230, based on the cell set determined in operation 2220, transceiver 310 transmits a PUSCH with the same TB on each cell in the indicated cell set.

[0271] In some embodiments, the gNB may use DCI format 2_0 to provide an SFI field value in a format applicable to one or more time slots. In these embodiments, the SFI may identify a flexible symbol (F) as a DL symbol or a UL symbol, or maintain it as a flexible symbol that is later interpreted as unavailable for DL ​​reception or UL transmission. When a CG-PUSCH resource includes, for example, a symbol indicated as a flexible symbol according to tdd-UL-DL-ConfigurationCommon, and a symbol indicated as a DL symbol or a flexible symbol by an SFI field value in DCI format 2_0, the CG-PUSCH resource becomes invalid because CG-PUSCH transmission cannot occur in a DL symbol or a symbol indicated as unavailable. Therefore, in order to avoid having to discard a CG-PUSCH transmission when the corresponding configured resource includes a flexible symbol that becomes unavailable (where the flexible symbol becomes unavailable due to the adaptation of the SFI value in DCI format 2_0 to the time slot format), the UE may adapt the configured CG-PUSCH resources to exclude the flexible symbol when it becomes unavailable. In addition, to provide a DL-UL switching gap, the UE may send the CG-PUSCH on a plurality of symbols (such as one symbol) after the last DL symbol determined based on the slot format. To compensate for the reduction in the number of REs used for CG-PUSCH transmission due to the reduction in the number of symbols, the UE may increase the transmission power of the CG-PUSCH due to the corresponding increase in BPRE, or may increase the number of RBs so that the total number of REs for CG-PUSCH transmission remains substantially the same without reducing the number of symbols. For example, the UE may include additional RBs for CG-PUSCH transmission in ascending RB indices starting from the last RB of the configured resources for CG-PUSCH transmission.

[0272] For example, Fig.23 A method of adapting multiple symbols for CG-PUSCH transmission according to various embodiments of the present disclosure is shown. Fig.23The method 2300 shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNBs 101 to 103. Other implementations may be used without departing from the scope of the present disclosure.

[0273] In operation 2310, a UE (such as UE 116) detects DCI format 2_0 and obtains a slot format from an SFI field value in DCI format 2_0.

[0274] In operation 2320, the UE 116 determines whether the SFI field value indicates that there is any symbol of the resource configuration for CG-PUSCH transmission that is a DL symbol or a flexible symbol. When the UE 116 determines that there is no symbol, the processor performs operation 2330. When the UE 116 determines that there is a symbol, the processor performs operation 2340.

[0275] In operation 2330, based on the UE 116 determining that there is no symbol of the CG-PUSCH resource configuration that is a DL symbol or a flexible symbol, the transceiver 310 transmits the CG-PUSCH.

[0276] In operation 2340, based on the UE 116 determining that there are symbols of the CG-PUSCH resource configuration that are DL symbols or flexible symbols, the transceiver 310 sends the CG-PUSCH by reducing the number of symbols used for the resources. For example, the UE 116 may discard multiple first symbols for the resources that are indicated as DL symbols or flexible symbols. The UE 116 may also discard multiple consecutive UL symbols when the previous symbol reaches the number of UL symbols in the DL symbol. In addition, the UE may increase the power and / or number of RBs used for the CG-PUSCH transmission.

[0277] In some embodiments, a PUSCH transmission from a UE 116 may be scheduled via a DCI format in a PDCCH (GB-PUSCH). In these embodiments, the serving gNB 102 may indicate a time domain resource allocation (TDRA) field for a PUSCH transmission symbol that the gNB 102 previously indicated as a DL symbol via a higher layer parameter tdd-UL-DL-ConfigurationCommon, or that the gNB 102 previously indicated as a DL symbol or a flexible symbol via a slot format provided by an SFI value. Thus, the gNB 102 may meet the latency requirements for GB-PUSCH transmissions without having to wait to schedule a PUSCH transmission in a symbol after a DL symbol or after a flexible symbol.

[0278] In these embodiments, the UE 116 may consider the DCI format to be valid and transmit the GB-PUSCH in symbols indicated as DL symbols by the tdd-UL-DL-ConfigurationCommon or as DL symbols or flexible symbols by the slot format provided by the SFI value. To avoid cross-link interference, the gNB 102 may avoid transmitting in symbols indicated by the gNB 102 to the UE 116 for GB-PUSCH transmissions. An example of an exception may be symbols indicated to the UE 116 for receiving SS / PBCH blocks. When the UE 116 detects a DCI format that schedules PUSCH transmissions in symbols including symbols for receiving SS / PBCH blocks, the UE 116 may consider the DCI format to be invalid. The gNB 102 may configure the behavior of the UE 116 based on considering the DCI format to be valid or invalid with respect to the SS / PBCH blocks.

[0279] For example, Fig.24 A method of transmitting a GB-PUSCH in a symbol indicated as a DL symbol according to various embodiments of the present disclosure is shown. Fig.24 The method 2400 shown in FIG. 2 is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNBs 101 to 103. Other implementations may be used without departing from the scope of the present disclosure.

[0280] In operation 2410, a UE (such as UE 116) receives a value of an SFI field in a higher layer parameter tdd-UL-DL-ConfigurationCommon or DCI format 2_0 indicating a first symbol set as a DL symbol.

[0281] In operation 2420, the UE 116 detects a DCI format scheduling PUSCH transmission in the second symbol set. The second symbol set includes symbols from the first symbol set indicated in operation 2410.

[0282] In operation 2430, the transceiver 310 transmits the PUSCH. Based on the DCI format detected in operation 2420, the UE 116 considers the DCI format to be valid and ignores the indication provided by tdd-UL-DL-ConfigurationCommon or the value of the SFI field.

[0283] In some embodiments, the time slot format provided by tdd-UL-DL-ConfigurationCommon over multiple time slots may be non-periodic within multiple time slots. Therefore, since the corresponding symbol may be a DL symbol in the time slot, the periodic configuration of CG-PUSCH resources within multiple time slots may cause CG-PUSCH to be unavailable in the time slot. In order to avoid the unavailability of CG-PUSCH resources in some time slots over multiple time slots, various embodiments provide a separate CG-PUSCH resource configuration for each time slot over multiple time slots. In these embodiments, the configuration of each time slot may be periodic, with a period equal to the number of time slots.

[0284] Various embodiments of the present disclosure enable cancellation of transmissions to avoid interference from other transmissions on the same BWP from a cell to GB-PUSCH transmissions to the same serving gNB. For example, the gNB is aware that a transmission from one or more UEs is ongoing. For PUSCH transmissions or PDSCH receptions with low latency requirements, some methods include the gNB sending DCI format 2_4 to instruct the UE that is transmitting to cancel the transmission and avoid inter-UE interference with PUSCH transmissions or PDSCH receptions. These methods require all UEs with UL transmissions to monitor PDCCH to detect DCI format 2_4 at one or more occasions during the timeslot. Therefore, even when the UE is aware that there are no other UE receptions in the timeslot other than the potential PDCCH reception at the beginning of the timeslot, the UE cannot turn off the receive portion of the UE modem. Therefore, various embodiments of the present disclosure enable cancellation of transmissions to avoid interference.

[0285] In some implementations, a UE such as UE 116 may always monitor the PDCCH for DCI format 2_4 when UE 116 has any UL transmission in a timeslot.

[0286] In some implementations, UE 116 may selectively monitor the PDCCH of DCI format 2_4 in a time slot based on the UL transmission type that UE 116 has in the time slot. For example, a separate configuration may be provided for each transmission type of UE 116 receiver that indicates whether to monitor the PDCCH of DCI format 2_4 in the time slot. For certain transmission types, it is always desirable for UE 116 to monitor the PDCCH of DCI format 2_4. For example, a UE that transmits SRS or PUSCH in a time slot always monitors the PDCCH of DCI format 2_4 in the time slot, and thus can cancel the SRS or PUSCH transmission according to the indication of the corresponding resource of the SRS or PUSCH transmission by DCI format 2_4, while a UE that transmits only PUCCH or PRACH in a time slot does not monitor the PDCCH of DCI format 2_4, or it can be configured by the gNB 102 through a higher layer whether to monitor the PDCCH of DCI format 2_4 in the time slot, so that regardless of the indication of the corresponding resource of the PUCCH or PRACH transmission by DCI format 2_4, the UE does not cancel the PUCCH or PRACH transmission. For example, it can be configured from the gNB 102 through a higher layer whether to monitor the PDCCH of DCI format 2_4 in the time slot for each transmission type (e.g., for SRS, PUSCH, PRACH / PUCCH) separately. Similar to the cancellation of transmission based on the symbol direction indication of SFI, if DCI format 2_4 indicates cancellation of any time-frequency resource transmission for PUSCH transmission, the UE completely cancels PUSCH transmission and cancels SRS transmission only in the symbols where DCI format 2_4 indicates cancellation of transmission.

[0287] For the same transmission type, whether UE 116 monitors the PDCCH of DCI format 2_4 in a time slot may be configured separately. Whether UE 116 monitors the PDCCH of DCI format 2_4 in a time slot may depend on whether the transmission type of UE 116 is the first priority type or the second priority type as indicated by the DCI format of the scheduled transmission or the higher layer signaling that configures the transmission, or may depend on whether the transmission type occupies a number of RBs greater than a configured threshold number. For example, if UE 116 transmits a PUSCH scheduled by a DCI format indicating a first priority type for PUSCH transmission, UE 116 may monitor the PDCCH of DCI format 2_4, and if UE 116 transmits a PUSCH scheduled by a DCI format indicating a second priority type for PUSCH transmission, UE 116 may not monitor the PDCCH of DCI format 2_4. For example, when UE 116 transmits a PUSCH configured by higher layer signaling indicating a second priority type for PUSCH transmission, UE 116 may not monitor the PDCCH of DCI format 2_4. For example, since the granularity of the time resource set and the frequency resource set indicating cancellation of transmission through DCI format 2_4 is large, the UE may assume that the PRACH transmission or PUCCH transmission does not need to be canceled even when the PRACH transmission or PUCCH transmission includes time resources from the time resource set and frequency resources from the frequency resource set.

[0288] As another example, when UE 116 transmits PUCCH on a number of RBs greater than a configured threshold number of RBs, UE 116 may monitor PDCCH of DCI format 2_4. When UE 116 does not transmit PUCCH on a number of RBs greater than a configured threshold number of RBs, UE 116 may not monitor PDCCH of DCI format 2_4.

[0289] In some embodiments, to avoid CSI measurement errors, when UE 116 receives CSI-RS, UE 116 may also monitor PDCCH of DCI format 2_4. DCI format 2_4 may also indicate cancellation of reception in the indicated time-frequency resources. However, an exception may be cancellation of reception associated with SS / PBCH blocks that the UE assumes are sent by serving gNB 102 at a timing indicated by higher layer signaling (e.g., by a higher layer parameter ssb-PositionsInBurst).

[0290] For example, Fig.25 A method for determining whether to monitor a PDCCH of DCI format 2_4 in a time slot according to various embodiments of the present disclosure is shown. Fig.25The method 2500 shown is described as being implemented by UE 116, but it may be implemented in one or more of UE 111 to UE 116, and the corresponding method may be implemented by Figure 1 The present invention is performed by one or more of the gNBs 101 to 103. Other implementations may be used without departing from the scope of the present disclosure.

[0291] At operation 2510, when a UE (such as UE 116) has a transmission type in a time slot, the UE is configured to monitor or not monitor a PDCCH of DCI format 2_4 in the time slot. UE 116 may receive a signal from a gNB (such as gNB 102). The configuration may be stored in memory 360.

[0292] In operation 2520, UE 116 determines whether UE 116 is configured to monitor PDCCH of DCI format 2_4 in a time slot when UE 116 has a transmission type and does not have another transmission type. When UE 116 determines that UE 116 is configured to monitor PDCCH, UE 116 performs operation 2530. When UE 116 determines that UE 116 is configured not to monitor PDCCH, UE 116 performs operation 2540.

[0293] At operation 2530, based on the UE 116 determining that the UE 116 is configured to monitor the PDCCH, the processor monitors the PDCCH to detect DCI format 2_4. At operation 2540, based on the UE 116 determining that the UE 116 is configured not to monitor the PDCCH, the UE 116 does not monitor the PDCCH for DCI format 2_4.

[0294] In some embodiments, DCI format 2_4 may provide information for canceling transmission on more than one cell set. Since transmission cancellation is an infrequent event, including information for each cell in a set of more than one cell in DCI format 2_4 increases the size of DCI format 2_4, and when a PDCCH with DCI format 2_4 is sent, only a subset of cells is usually indicated. Rather than DCI format 2_4 providing information for each cell in a cell set separately, the information may be common to each cell in a cell set. In addition, a separate field of DCI format 2_4 may be used to indicate a subset of cells in a cell set to which transmission cancellation information may be applied. For example, for a set of 4 cells, a 3-bit field in DCI format 2_4 may indicate the applicability of the indication information for transmission cancellation to {Cell 0}, {Cell 1}, {Cell 2}, {Cell 3}, {Cell 0 and Cell 1}, {Cell 2 and Cell 3}, {Cell 0, Cell 1, Cell 2, Cell 3}. The mapping of the value of this field to the cells in the cell set may be provided by the serving gNB 102 to the UE 116 via higher layer signaling.

[0295] Although the present disclosure has been described in various illustrative embodiments, various changes and modifications may be suggested to one skilled in the art. The present disclosure is intended to encompass such changes and modifications as fall within the scope of the appended claims.

Claims

1. A method performed by a terminal in a communication system, the method comprising: Receiving downlink control information DCI from a base station, the DCI including a cancellation indication of a time-frequency resource for canceling uplink transmission for the terminal; identifying a symbol for sounding reference signal SRS transmission based on the DCI; and The SRS transmission on the symbol is canceled.

2. The method according to claim 1, further comprising: identifying a physical uplink shared channel (PUSCH) transmission for transmission on the time-frequency resources; and The PUSCH transmission is canceled.

3. The method according to claim 1, further comprising: The SRS transmission is sent on remaining symbols other than the symbols used for the SRS transmission.

4. The method according to claim 1, further comprising: Identify physical random access channel PRACH transmissions; as well as sending the PRACH transmission to the base station without considering the DCI, Among them, the format of the DCI is DCI format 2_4.

5. A terminal in a communication system, the terminal comprising: Transceiver; as well as A processor is coupled to the transceiver, and the processor is configured to: Receiving downlink control information DCI from a base station, the DCI including a cancellation indication of a time-frequency resource for canceling uplink transmission for the terminal; identifying a symbol for sounding reference signal SRS transmission based on the DCI; and The SRS transmission on the symbol is canceled. The terminal according to claim 5, wherein: The processor is further configured to: identifying a physical uplink shared channel (PUSCH) transmission for transmission on the time-frequency resources; and The PUSCH transmission is canceled.

7. The terminal according to claim 5, wherein: The processor is further configured to: The SRS transmission is sent on remaining symbols other than the symbols used for the SRS transmission.

8. The terminal according to claim 5, wherein: The processor is further configured to: identifying a physical random access channel PRACH transmission; and sending the PRACH transmission to the base station without considering the DCI, Among them, the format of the DCI is DCI format 2_4.

9. A method performed by a base station in a communication system, the method comprising: Identifying time-frequency resources for which uplink transmission of the terminal is to be cancelled; Sending downlink control information DCI to the terminal, where the DCI includes a cancellation indication associated with the time-frequency resource; as well as sending, to the terminal, information associated with transmitting a sounding reference signal (SRS) of the terminal on the time-frequency resource, The SRS transmission on the symbol is cancelled by the DCI.

10. The method according to claim 9, further comprising: sending, to the terminal, information associated with sending a physical uplink shared channel (PUSCH) transmission on the time-frequency resources, The PUSCH transmission is cancelled by the DCI.

11. The method according to claim 9, further comprising: The SRS transmission is received on remaining symbols other than the symbol used for the SRS transmission.

12. The method according to claim 9, further comprising: Ignoring the DCI, receiving a physical random access channel PRACH transmission from the terminal, Among them, the format of the DCI is DCI format 2_4.

13. A base station in a communication system, the base station comprising: Transceiver; as well as A processor is coupled to the transceiver, and the processor is configured to: Identifying time-frequency resources for which uplink transmission of the terminal is to be cancelled; Sending downlink control information DCI to the terminal, where the DCI includes a cancellation indication associated with the time-frequency resource; as well as sending, to the terminal, information associated with transmitting a sounding reference signal (SRS) of the terminal on the time-frequency resource, The SRS transmission on the symbol is cancelled by the DCI.

14. The base station according to claim 13, wherein: The processor is further configured to: sending, to the terminal, information associated with sending a physical uplink shared channel (PUSCH) transmission on the time-frequency resources, The PUSCH transmission is cancelled by the DCI.

15. The base station according to claim 13, wherein: The processor is further configured to: receiving the SRS transmission on remaining symbols other than the symbol used for the SRS transmission, Among them, the format of the DCI is DCI format 2_4.

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