KR20230129439A - Indication of uplink control channel repetition in wireless communications - Google Patents

Abstract

Aspects of the present disclosure relate to techniques for physical uplink control channel configuration and coverage enhancement in a wireless communications network. The base station may dynamically indicate a repetition factor for the uplink control channel to improve coverage of the uplink control channel. The base station can explicitly or implicitly indicate the repetition factor using various signaling techniques. Interpretation of the indication of repetition factor may depend on one or more parameters, such as the physical uplink control channel (PUCCH) format, uplink control information size, code rate, and/or the PUCCH resource set used for the PUCCH.

Description

Indication of uplink control channel repetition in wireless communications

This application is related to Patent Application No. 17/513,669, filed with the U.S. Patent and Trademark Office on October 28, 2021, Provisional Patent Application No. 63/138,241, filed with the U.S. Patent and Trademark Office on January 15, 2021, and U.S. Patent and Trademark Office No. 1, 2021. Claims the benefit of, and claims priority to, Provisional Patent Application No. 63/138,145, filed on January 15, 2021, and Provisional Patent Application No. 63/138,265, filed with the U.S. Patent and Trademark Office on January 15, 2021, all of them. The contents are incorporated herein by reference as if fully set forth below and for all applicable purposes.

The techniques discussed below relate generally to wireless communication systems, and more specifically to techniques for indicating physical uplink control channel repetition in wireless communication.

Wireless communication systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, etc. These systems may be capable of supporting communication with multiple users by sharing available system resources (eg, time, frequency, and power). Examples of these multiple access systems include fourth generation (4G) systems such as the Long Term Evolution (LTE) system, the LTE-Advanced (LTE-A) system, or the LTE-A Pro system, and New Radio; NR) systems, which may also be referred to as fifth generation (5G) systems. These systems include code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform spread orthogonal frequency division multiplexing (DFT-S-). Technologies such as OFDM) can also be employed. A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each of which simultaneously supports communication for multiple communication devices, which may otherwise be known as user equipment (user UE).

In a wireless network, e.g., a 5G NR network, a user equipment (UE) may communicate with a network entity (e.g., a base station) using various uplink (UL) and downlink (DL) channels. An example UL channel is the Physical Uplink Control Channel (PUCCH). The UE can transmit various information to the network through PUCCH. In one aspect, PUCCH may carry uplink control information (UCI), which may include hybrid automatic repeat request (HARQ) feedback, channel state information (CSI), and scheduling request (SR). Therefore, PUCCH is important for maintaining communication between the UE and the network.

The following presents an overview of one or more aspects of the disclosure to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated features of the disclosure, and is intended to neither identify key or critical elements of all aspects of the disclosure nor delineate the scope of any or all aspects of the disclosure. Its sole purpose is to present some concepts of one or more aspects of the disclosure in the form of a prelude to the more detailed description that is presented later.

One aspect of the present disclosure provides user equipment (UE) for wireless communications. The UE includes a communication interface for wireless communication, memory, and a processor coupled to the communication interface and memory. The processor and memory are configured to receive control information from the base station through a communication interface. The processor and memory are further configured to determine a repetition factor based on the control information, wherein the repetition factor represents a repetition count for transmitting repetitions of the uplink control message. The processor and memory are further configured to transmit repetitions of the uplink control message to the base station through the communication interface according to the repetition count.

Another aspect of the present disclosure provides a method of wireless communication in a user equipment (UE). The method includes receiving control information from a base station. The method further includes determining a repetition factor based on the control information, wherein the repetition factor represents a repetition count for transmitting repetitions of the uplink control message. The method further includes transmitting repetitions of the uplink control message to the base station according to the repetition count.

Another aspect of the present disclosure provides a base station for wireless communications. The base station includes a communication interface for wireless communication, memory, and a processor coupled to the communication interface and memory. The processor and memory are configured to transmit control information to the UE via the communication interface, where the control information includes an indication of a repetition factor corresponding to a repetition count of the uplink control message. The processor and memory are further configured to receive an uplink control message repeated according to a repetition count from the UE through the communication interface.

Another aspect of the present disclosure provides a method for wireless communication in a base station. The method includes transmitting control information to the UE, where the control information includes an indication of a repetition factor corresponding to a repetition count of the uplink control message. The method further includes receiving a repeated uplink control message from the UE according to the repetition count.

These and other aspects of the invention will be more fully understood upon review of the detailed description that follows. Other aspects, features, and implementations will become apparent to those skilled in the art upon reviewing the following description of specific example implementations in conjunction with the accompanying drawings. Although features may be discussed with respect to certain examples and figures below, all implementations may include one or more of the advantageous features discussed herein. That is, although one or more examples may be discussed as having certain advantageous features, one or more of such features may also be used in accordance with the various implementations discussed herein. In a similar manner, example implementations may be discussed below as a device, system, or method, but it should be understood that such example implementations may be implemented in a variety of devices, systems, and methods.

1 is a schematic illustration of a wireless communication system according to some aspects.
2 is an illustration of an example of a wireless access network in accordance with some aspects.
3 is a schematic illustration of organization of radio resources in an air interface using orthogonal frequency division multiplexing (OFDM), according to some aspects.
4 is a block diagram illustrating a wireless communication system supporting multiple input multiple output (MIMO) communications.
FIG. 5 is a diagram illustrating communication between a base station and a UE using beamformed signals in accordance with some aspects.
FIG. 6 is a diagram illustrating a process for explicitly indicating a physical uplink control channel (PUCCH) repetition factor in accordance with some aspects.
7 is a diagram illustrating example bit string values and corresponding PUCCH repetition factors according to some aspects.
8 is a flow diagram illustrating a process for transmitting a request for PUCCH repetition factor in accordance with some aspects.
9 is a diagram illustrating a process for implicitly indicating a PUCCH repetition factor in accordance with some aspects.
10 is a diagram illustrating an example process for implicitly indicating a PUCCH repetition factor in accordance with some aspects.
11 is a diagram illustrating a process for dynamic indication of a PUCCH repetition factor in accordance with some aspects.
FIG. 12 is a block diagram conceptually illustrating an example hardware implementation for a scheduled entity in accordance with some aspects.
13 is a flow diagram illustrating an example process for receiving a repetition of an uplink control message in accordance with some aspects.
14 is a block diagram conceptually illustrating an example hardware implementation for a scheduled entity in accordance with some aspects.
15 is a flow diagram illustrating an example process for transmitting a repetition of an uplink control message in accordance with some aspects.

The detailed description set forth below in conjunction with the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, it will be apparent to those skilled in the art that these concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

Aspects of the present disclosure relate to techniques for physical uplink control channel configuration and coverage enhancement in wireless communication networks. In some aspects, a base station may dynamically indicate a repetition factor for the uplink control channel to improve coverage of the uplink control channel. In some aspects, a base station may explicitly or implicitly indicate the repetition factor using various signaling techniques. In some aspects, interpretation of the indication of repetition factor may depend on one or more parameters, such as physical uplink control channel (PUCCH) format, uplink control information size, code rate, and/or PUCCH resource set used for the PUCCH. You can.

Although aspects and implementations are described herein by way of illustration of some examples, those skilled in the art will understand that additional implementations and use cases may occur in many different arrangements and scenarios. The innovations described herein may be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, implementation and/or use may include integrated chips and other non-modular component-based devices (e.g., end-user devices, vehicles, communications devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, AI-enabled devices). It may also occur through a type device, etc.). Some examples may or may not be particularly relevant to use cases or applications, but broad applicability of the described innovations may arise. Implementations may include non-modular, non-chiplevel implementations in chip-level or modular components, and also in integrated, distributed, or original equipment manufacturer (OEM) devices or systems that incorporate one or more aspects of the described innovation. The range may vary. In some practical settings, a device incorporating the described aspects and features may also necessarily include additional components and features for implementing and practicing the claimed and described implementations. For example, the transmission and reception of wireless signals involves multiple components for analog and digital purposes (e.g., antennas, RF chains, power amplifiers, modulators, buffers, processor(s), interleaver, adders). /Hardware components including adders, etc.) must be included. It is intended that the innovations described herein may be implemented in a wide range of devices, chip-level components, systems, distributed arrangements, end-user devices, etc. of varying sizes, shapes and configurations.

The various concepts presented throughout this disclosure may be implemented across a wide range of communication systems, network architectures, and communication standards. Referring now to FIG. 1 , various aspects of the present disclosure are illustrated with reference to a wireless communication system 100 by way of illustrative example and not by way of limitation. Wireless communication system 100 includes three interacting domains: core network 102, radio access network (RAN) 104, and user equipment (UE) 106. By the wireless communication system 100, the UE 106 may be enabled to conduct data communications with an external data network 110, such as, but not limited to, the Internet.

RAN 104 may implement any suitable wireless communication technology or techniques to provide radio access to UE 106. As an example, RAN 104 may operate in accordance with ^3rd Generation Partnership Project (3GPP) New Radio (NR) specifications, sometimes referred to as 5G. As another example, RAN 104 may operate under a hybrid of 5G NR and Evolved Universal Terrestrial Radio Access Network (eUTRAN), sometimes referred to as LTE. 3GPP refers to this hybrid RAN as Next-Generation RAN or NG-RAN. Of course, many other examples may be utilized within the scope of this disclosure.

As illustrated, RAN 104 includes a plurality of base stations 108. Broadly speaking, a base station is a network element in a radio access network responsible for wireless transmission and reception to and from a UE in one or more cells. In different technologies, standards or contexts, a base station is variously referred to as base station transceiver (BTS), wireless base station, wireless transceiver, transceiver function, basic service set (BSS), extended service set (ESS), access point (AP). ), Node B (NB), eNode B (eNB), gNode B (gNB), Transmit and Receive Point (TRP), or other suitable terminology by those skilled in the art. In some examples, a base station may include two or more TRPs that may or may not be collocated. Each TRP may communicate on the same or different carrier frequencies within the same or different frequency bands.

A wireless access network 104 supporting wireless communication for multiple mobile devices is further illustrated. A mobile device may be referred to as a user equipment (UE) in 3GPP standards, but can also be referred to as a mobile station (MS), subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, It may also be referred to by those skilled in the art as a remote device, mobile subscriber station, access terminal (AT), mobile terminal, wireless terminal, remote terminal, handset, terminal, user agent, mobile client, client, or some other suitable terminology. A UE may be a device (eg, a mobile device) that provides a user with access to network services.

Within this document, a “mobile” device does not necessarily have the ability to move, but may also be stationary. The term mobile device or mobile device refers to a diverse array of devices and technologies. UEs may include a number of hardware structural components sized, shaped, and arranged to facilitate communication; Such components may include antennas, antenna arrays, radio frequency (RF) chains, amplifiers, one or more processors, etc. electrically coupled to each other. For example, some non-limiting examples of mobile devices include mobiles, cellular (cell) phones, smart phones, Session Initiation Protocol (SIP) phones, laptops, personal computers (PCs), notebooks, netbooks, smartbooks, tablets, and personal digital devices. assistive devices (PDAs), and a wide array of embedded systems that address, for example, the “Internet of Things” (IoT). Mobile devices may additionally include automobiles or other transportation vehicles, remote sensors or actuators, robots or robotic devices, satellite radios, global positioning system (GPS) devices, object tracking devices, drones, multi-copters, quad-copters, remote control devices, It may be a consumer and/or wearable device, such as eyewear, wearable cameras, virtual reality devices, smart watches, health or fitness trackers, digital audio players (e.g., MP3 players), cameras, gaming consoles, etc. The mobile device may additionally be a digital home or smart home device, such as home audio, video, and/or multimedia devices, appliances, bending machines, intelligent lighting, home security systems, smart meters, etc. Mobile devices may additionally include smart energy devices, security devices, solar panels or solar arrays, urban infrastructure devices that control power (e.g., smart grid), lighting, water, etc., industrial automation and enterprise devices, logistics controllers, etc. It may be agricultural equipment, etc. Additionally, mobile devices may provide connected medical or telemedicine support, such as remote healthcare. Telehealth devices may include telehealth monitoring devices and telehealth administration devices, for example, priority access for transmission of critical service data, and/or In the relevant QoS aspect for the transmission of data, priority processing or priority access may be given compared to other types of information.

Wireless communication between RAN 104 and UE 106 may be described as utilizing an air interface. Transmissions from a base station (e.g., base station 108) to one or more UEs (e.g., UE 106) via an air interface may be referred to as downlink (DL) transmissions. In accordance with certain aspects of this disclosure, the term downlink may refer to a point-to-multipoint transmission originating at a scheduling entity (described further below; e.g., base station 108). Another way to describe this scheme might be to use the term broadcast channel multiplexing. Transmissions from a UE (e.g., UE 106) to a base station (e.g., base station 108) may be referred to as uplink (UL) transmissions. According to further aspects of the present disclosure, the term uplink may refer to a point-to-point transmission originating at a scheduled entity (described further below; e.g., UE 106).

In some examples, access to the air interface may be scheduled, and a scheduling entity (e.g., base station 108) allocates resources for communication between some or all devices and equipment within its service area or cell. Within this disclosure, as discussed further below, a scheduling entity may be responsible for scheduling, allocating, reconfiguring, and releasing resources for one or more scheduled entities. That is, for scheduled communication, UEs 106, which may be scheduled entities, may utilize resources allocated by scheduling entity 108.

Base stations 108 are not the only entities that may function as scheduling entities. That is, in some examples, a UE may function as a scheduling entity that schedules resources for one or more scheduled entities (eg, one or more other UEs).

As illustrated in FIG. 1 , scheduling entity 108 may broadcast downlink traffic 112 to one or more scheduled entities 106 . In general, scheduling entity 108 directs traffic in the wireless communication network, including downlink traffic 112, and, in some examples, uplink traffic 116 from one or more scheduled entities 106 to scheduling entity 108. It is a node or device responsible for scheduling. On the other hand, scheduled entity 106 includes scheduling information (e.g., grants), synchronization or timing information, or other control information from another entity in the wireless communication network, such as scheduling entity 108. However, the node or device that receives the downlink control information 114 is not limited thereto. The scheduling entity 106 may further transmit uplink control information 118 to the scheduling entity 108, including but not limited to scheduling request or feedback information or other control information.

Additionally, uplink and/or downlink control information 114 and/or 118 and/or traffic information 112 and/or 116 may be transmitted on waveforms that may be time-divided into frames, subframes, slots, and/or symbols. It could be. As used herein, a symbol may refer to a unit of time carrying one resource element (RE) per subcarrier, in an orthogonal frequency division multiplexed (OFDM) waveform. A slot may carry 7 or 14 OFDM symbols. A subframe may refer to a duration of 1 ms. Multiple subframes or slots may be grouped together to form a single frame or radio frame. Within this disclosure, a frame may refer to a predetermined duration (e.g., 10 ms) for wireless transmission, with each frame consisting of 10 subframes, e.g., 1 ms each. Of course, these definitions are not required, and any suitable way for organizing the waveforms may be utilized, and the various time segments of the waveform may have any suitable duration.

In general, base stations 108 may include a backhaul interface for communication with the backhaul portion 120 of the wireless communication system. Backhaul 120 may provide a link between base station 108 and core network 102. Additionally, in some examples, a backhaul network may provide interconnection between individual base stations 108. Various types of backhaul interfaces may be employed, such as direct physical connections, virtual networks, etc., using any suitable transport network.

Core network 102 may be part of wireless communication system 100 and may be independent of the radio access technology used in RAN 104. In some examples, core network 102 may be configured according to standards (e.g., 5GC). In other examples, core network 102 may be configured according to evolved packet core (EPC), or any other suitable standard or configuration.

Referring now to Figure 2, a schematic illustration of RAN 200 is provided by way of example and not limitation. In some examples, RAN 200 may be the same as RAN 104 described above and shown in FIG. 1. The geographic area covered by RAN 200 may be divided into cellular zones (cells) that can be uniquely identified by a user equipment (UE) based on an identification broadcast from an access point or base station. there is. FIG. 2 illustrates macrocells 202 and 206, and a small cell, each of which may include one or more sectors (not shown). A sector is a sub-region of a cell. All sectors within a cell are served by the same base station. Wireless links within a sector can be identified by a single logical identification belonging to that sector. In a cell divided into sectors, multiple sectors within the cell may be formed by groups of antennas, with each antenna responsible for communicating with UEs in its portion of the cell.

A variety of base station arrangements may be utilized. For example, in Figure 2, two base stations, base station 210 and base station 212, are shown in cells 202 and 204. A third base station, base station 214, is shown controlling a remote radio head (RRH) 216 in cell 206. That is, the base station may have an integrated antenna or may be connected to the antenna or RRH 216 by a feeder cable. In the example shown, cells 202, 204, and 206 may be referred to as macrocells because base stations 210, 212, and 214 support cells with large sizes. Additionally, a base station 218 is shown within a cell 208 that may overlap one or more macrocells. In this example, because base station 218 supports cells with a relatively small size, the cells may be referred to as small cells (e.g., microcell, picocell, femtocell, home base station, homenode B, eNode B, etc.). It may be possible. Cell sizing can be done according to system design as well as component constraints.

It should be understood that radio access network 200 may include any number of wireless base stations and cells. Additionally, relay nodes may be deployed to expand the size or coverage area of a given cell. Base stations 210, 212, 214, 218 provide wireless access points to the core network for any number of mobile devices. In some examples, base stations 210, 212, and/or 218 may be the same as base station/scheduling entity 108 described above and shown in FIG. 1.

2 further includes an unmanned aerial vehicle (UAV) 220, which may be a drone or quadcopter. UAV 220 may be configured to function as a base station. In other words, in some examples, the cell is not necessarily stationary, and the cell's geographic area may move depending on the location of a mobile base station, such as quadcopter 220.

Within RAN 200, cells may contain UEs that may be communicating with one or more sectors of each cell. Additionally, each base station 210, 212, 214, and 218 may be configured to provide an access point to the core network 102 (see FIG. 1) for all UEs in individual cells. For example, UEs 222 and 224 may communicate with base station 210; UEs 226 and 228 may communicate with base station 212; UEs 230 and 232 may communicate with base station 214 via RRH 216; UE 234 may communicate with base station 218; And UE 236 may communicate with mobile base station 220. In some examples, UEs 222, and/or 242 may be the same as UE/scheduled entity 106 described above and illustrated in FIG. 1.

In some examples, UAV 220 (e.g., quadcopter) may be configured to function as a UE. For example, UAV 220 may operate within cell 202 by communicating with base station 210.

In a further aspect of RAN 200, sidelink signals may be used between UEs without having to rely on scheduling or control information from a base station. For example, two or more UEs (e.g., UEs 238, 240, and 242) may use peer-to-peer (P2P) or sidelink signals 237 without relaying their communication through a base station. In some examples, UEs 238, 240, and 242 each schedule resources among themselves and sidelink signals 237 without relying on scheduling or control information from the base station. may function as a scheduling entity or transmitting sidelink device and/or a scheduled entity or receiving sidelink device to communicate. In other examples, two or more UEs (e.g., UEs 226 and 228) may also communicate sidelink signals 227 over a direct link (sidelink) without passing the communication through base station 212. In this example, base station 212 may allocate resources to UEs 226 and 228 for sidelink communication. In either case, such sidelink signaling 227 and 237 may be used in a peer-to-peer (P2P) network, device-to-device (D2D) network. device) network, vehicle-to-vehicle (V2V) network, vehicle-to-everything (V2X) network, mesh network, or other suitable direct link network.

In radio access network 200, the ability of a UE to communicate while moving, regardless of its location, is referred to as mobility. The various physical channels between the UE and the radio access network are generally set up, maintained, and released under the control of an access and mobility management function (AMF, not shown, part of core network 102 in FIG. 1), where the AMF performs authentication and It may also include a security context management function (SCMF) and a security anchor function (SEAF) that perform. SCMF can fully or partially manage the security context for both control plane and user plane functions.

In various aspects of the present disclosure, radio access network 200 may utilize DL-based mobility or UL-based mobility to enable mobility and handovers (i.e., transfer of a UE connection from one wireless channel to another). You can also use . In a network configured for DL-based mobility, during an call with a scheduling entity, or at any other time, a UE may monitor various parameters of the signal from its serving cell as well as various parameters of neighboring cells. It may be possible. Depending on the quality of these parameters, the UE may be able to maintain communication with one or more of the neighboring cells. During this time, if the UE moves from one cell to another, or if the signal quality from the neighboring cell exceeds the signal quality from the serving cell for a given amount of time, the UE can either handoff or handover from the serving cell to the neighboring (target) cell. You can also overdo it. For example, UE 224 (illustrated as a vehicle, although any suitable type of UE may be used) may move from a geographic area corresponding to its serving cell to a geographic area corresponding to a neighboring cell. When the signal strength or quality from a neighboring cell exceeds that of its own serving cell 206 for a given amount of time, the UE 224 sends a reporting message indicating this condition to its serving base station 216 It can also be sent to . In response, UE 224 may receive a handover command, and the UE may undergo handover to cell 202.

In a network configured for UL-based mobility, UL reference signals from each UE may be utilized by the network to select a serving cell for each UE. In some examples, base stations 210, 212, and 214/216 provide integrated synchronization signals (e.g., integrated Primary Synchronization Signals (PSSs), integrated Secondary Synchronization Signals (PSSs) It may also broadcast Synchronization Signals (SSSs) and integrated Physical Broadcast Channels (PBCH). UEs 222, 224, 226, 228, 230, and 232 receive integrated synchronization signals, derive carrier frequency and slot timing from the synchronization signals, and, in response to deriving the timing, generate an uplink pilot signal. Alternatively, a reference signal may be transmitted. An uplink pilot signal transmitted by a UE (e.g., UE 224) may be simultaneously received by two or more cells (e.g., base stations 210 and 214/216) within radio access network 200. Each of the cells may measure the strength of the pilot signal, and the radio access network (e.g., one or more of base stations 210 and 214/216 and/or a central node within the core network) may determine the serving cell for UE 224. You can also decide. As UE 224 moves through radio access network 200, the network may continue to monitor uplink pilot signals transmitted by UE 224. When the signal strength or quality of the pilot signal as measured by the neighboring cell exceeds the signal strength or quality as measured by the serving cell, the network 200 may, with or without informing the UE 224, determine the neighbor cell from the serving cell. The UE 224 may be handed over to the cell.

Although the synchronization signals transmitted by base stations 210, 212, and 214/216 may be integrated, the synchronization signals do not identify a particular cell, but rather multiple cells operating on the same frequency and/or with the same timing. It is also possible to identify regions of cells. The use of zones in 5G networks or other next-generation communication networks enables an uplink-based mobility framework and improves the efficiency of both the UE and the network, reducing the number of mobility messages that need to be exchanged between the UE and the network. Because it could be.

In various implementations, the air interface in radio access network 200 may utilize licensed spectrum, unlicensed spectrum, or shared spectrum. Licensed spectrum provides exclusive use of a portion of the spectrum by mobile network operators, who typically purchase a license from a government regulator. Unlicensed spectrum provides for shared use of portions of the spectrum without the need for government permitting licenses. Compliance with some technical rules is generally still required to access unlicensed spectrum, but in general, any operator or device may have access. Shared spectrum may be between licensed and unlicensed spectrum, so technical rules or restrictions may be required to access the spectrum, but the spectrum may still be shared by multiple operators and/or multiple RATs. For example, the holder of a license for a portion of licensed spectrum may provide licensed shared access (LSA) to share that spectrum with other parties, e.g., with appropriate licensee-determined conditions for gaining access. It may be possible.

The air interface in wireless access network 200 may utilize one or more duplexing algorithms. Duplex refers to a point-to-point communication link in which both endpoints can communicate with each other in both directions. Full duplex means that both endpoints can communicate with each other simultaneously. Half duplex means that only one endpoint can transmit information to another endpoint at a time. Half duplex emulation is often implemented for wireless links utilizing time division duplex (TDD). In TDD, transmissions in different directions on a given channel are separated from each other using time division multiplexing. That is, at some times, the channel is dedicated to transmission in one direction, while at other times, the channel is dedicated to transmission in the other direction, where the direction may change very quickly, for example, several times per slot. In wireless links, a full duplex channel typically relies on physical isolation of transmitter and receiver, and suitable interference cancellation techniques. Full duplex emulation is often implemented for wireless links by utilizing frequency division duplex (FDD) or space division duplex (SDD). In FDD, transmission in different directions may operate at different carrier frequencies (eg, within a paired spectrum). In SDD, transmissions in different directions on a given channel are separated from each other using spatial division multiplexing (SDM). In other examples, full duplex communications may be implemented within an unpaired spectrum (e.g., within a single carrier bandwidth), where transmission in different directions occurs within different sub-bands of the carrier bandwidth. . This type of full duplex communication may be referred to herein as sub-band full duplex (SBFD), which is also known as flexible duplex.

Moreover, the air interface in radio access network 200 may utilize one or more multiplexing and multiple access algorithms to enable simultaneous communication of various devices. For example, the 5G NR specification provides multiple accesses for UL transmission from the UE 222 to the base station 210, utilizing cyclic prefix (CP) and orthogonal frequency division multiplexing (OFDM) to transmit the UL to the base station 210. ) to one or more UEs 222 and 224. Additionally, for UL transmission, the 5G NR specification supports CP (also known as Single Carrier FDMA (SC-FDMA)) Wysan Fourier Transform Spread OFDM. (DFT-s-OFDM). However, within the scope of the present invention, multiplexing and multiple access are not limited to the above schemes, and include time division multiple access (TDMA), code division multiple access (CDMA) , frequency division multiple access (FDMA), sparse code multiple access (SCMA), resource spreading multiple access (RSMA), or other suitable multiple access schemes may be provided utilizing UEs ( Multiplexing the DL transmissions to the 222 and 222 may be performed using time division multiplexing (TDM), code division multiplexing (CDM), frequency division multiplexing (FDM), orthogonal frequency division multiplexing (OFDM), sparse code multiplexing (SCM), or another suitable multiplexing scheme. It may also be provided using .

Various aspects of the present disclosure will be described with reference to OFDM waveforms schematically illustrated in the figures. It should be understood by those skilled in the art that various aspects of the present disclosure may be applied to SC-FDMA waveforms in substantially the same manner as described herein below. That is, some examples of this disclosure may focus on OFDM links for clarity, but it should be understood that the same principles may also apply to SC-FDMA waveforms as well.

Referring now to Figure 3, an enlarged view of an example subframe 302 illustrating an OFDM resource grid is shown. However, as those skilled in the art will readily appreciate, the physical layer (PHY) transmission structure for any particular application may vary from the example described herein, depending on any number of factors. Here, time is in the horizontal direction in units of OFDM symbols; Frequency is in the vertical direction in units of subcarriers of a carrier.

Resource grid 304 may be used to schematically represent time-frequency resources for a given antenna port. That is, in a multiple-input multiple-output (MIMO) implementation with multiple antenna ports available, a corresponding multiple number of resource grids 304 may be available for communication. Resource grid 304 is divided into multiple resource elements (REs) 306. RE, which is 1 subcarrier by 1 symbol, is the smallest discrete portion of the time-frequency grid and contains a single plural value representing data from a physical channel or signal. Depending on the modulation utilized in the particular implementation, each RE may represent one or more information bits. In some examples, a block of REs may be referred to as a physical resource block (PRB) or more simply a resource block (RB) 308 that contains any suitable number of consecutive subcarriers in the frequency domain. In one example, RB may include subcarriers, which is a number independent of the numerology used. In some examples, depending on the numerology, a RB may include any suitable number of consecutive OFDM symbols in the time domain. Within this disclosure, it is assumed that a single RB, such as RB 308, entirely corresponds to a single direction of communication (either transmitting or receiving for a given device).

A set of contiguous or discontinuous resource blocks may be referred to herein as a resource block group (RBG), subband or bandwidth portion (BWP). A set of subbands or BWPs may span the entire bandwidth. Scheduling of a scheduled entity (e.g., UE) for downlink, uplink or sidelink transmission typically involves scheduling one or more resource elements 306 within one or more subbands or bandwidth portions (BWPs). do. Accordingly, the UE typically utilizes only a subset of the resource grid 304. In some examples, RB may be the smallest unit of resources that can be allocated to a UE. Therefore, the more RBs scheduled for a UE and the higher the modulation scheme selected for the air interface, the higher the data rate for the UE. The RB may be scheduled by a scheduling entity such as a base station (eg, gNB, eNB, etc.) or may be self-scheduled by a UE implementing D2D sidelink communication.

In this example, RB 308 is shown as occupying less than the entire bandwidth of subframe 302, with some subcarriers illustrated above and below RB 308. In a given implementation, a subframe 302 may have a bandwidth corresponding to any number of one or more RBs 308. Additionally, in this example, RB 308 is shown as occupying less than the entire duration of subframe 302, but this is only one possible example.

Each 1 ms subframe may consist of a galaxy 302 or multiple adjacent slots. In the example shown in the figure, one subframe 302 includes, as an illustrative example, four slots 310. In some examples, a slot may be defined according to a specified number of OFDM symbols with a given cyclic prefix (CP) length. For example, a slot may contain 7 or 14 OFDM symbols with a nominal CP. Additional examples may include mini-slots, sometimes referred to as shortened transmission time intervals (TTIs), that have a shorter duration (e.g., 1 to 3 OFDM symbols). These mini-slots or shortened transmission time intervals (TTIs) may, in some cases, be transmitted occupying resources scheduled for ongoing slot transmissions for the same or different UEs. Any number of resource blocks may be utilized within a subframe or slot.

An enlarged view of one of the slots 310 illustrates the slot 310 including a control area 312 and a data area 314. In general, control area 312 may carry a control channel and data area 314 may carry a data channel. Of course, a slot may include all DL, all UL, or at least one DL portion and at least one UL portion. The structure shown in Figure 3 is merely illustrative in nature and different slot structures may be utilized and may include one or more each of control area(s) and data area(s).

Although not illustrated in FIG. 3, various REs 306 within RB 308 may be scheduled to carry one or more physical channels, including control channels, shared channels, data channels, etc. Other REs 306 within RB 308 may also carry pilots and/or reference signals. These pilots or reference signals may provide for the receiving device to perform channel estimation of the corresponding channel, which may enable coherent demodulation/detection of control and/or data channels within RB 308. .

In some examples, slots 310 may be utilized for broadcast, multicast, groupcast, or unicast communications. For example, broadcast, multicast or groupcast communication may refer to point-to-multipoint transmission by one device (e.g., a base station, UE, or other similar device) to another device. Here, broadcast communications are delivered to all devices, whereas multicast or groupcast communications are delivered to multiple intended recipient devices. Unicast communication may refer to point-to-point transmission by one device to a single other device.

In the example of cellular communication over a cellular carrier via the Uu interface, for DL transmission, a scheduling entity (e.g., a base station) may request DL control information, including one or more DL control channels, such as a Physical Downlink Control Channel (PDCCH). One or more REs 306 may be assigned (e.g., within the control area 312) to convey to one or more scheduled entities (e.g., UEs). The PDCCH includes, but is limited to, power control commands (e.g., one or more open loop power control parameters and/or one or more closed loop power control parameters), scheduling information, acknowledgments, and/or RE assignments for DL and transmission. It returns downlink control information (DCI) that is not available. The PDCCH may additionally carry HARQ feedback transmissions such as acknowledgment (ACK) or negative acknowledgment (NACK). HARQ is a technique well known to those skilled in the art, in which the integrity of packet transmissions may be checked for accuracy at the receiving end, for example, utilizing any suitable integrity checking mechanism such as checksum or cyclic redundancy (CRC). If the integrity of the transmission is confirmed, an ACK may be sent, while if not, a NACK may be sent. In response to the NACK, the transmitting device may send a HARQ retransmission that may implement chase combining, incremental redundancy, etc. .

The base station has a demodulation reference signal (DMRS); PT-RS (phase-tracking reference signal);CSI-RS (channel state information (CSI) reference signal); and (synchronization signal block), one or more REs 306 may be additionally allocated (e.g., in the control area 312 or the data area 314) to carry other DL signals such as (synchronization signal block). SSBs may be broadcast at regular intervals based on periodicity (e.g., 5, 10, 20, 40, 80, or 160 ms). SSB may include a synchronization signal (SSS), a secondary synchronization signal (SSS), and a broadcast control channel (SSS). The UE may utilize PSS and SSS to achieve radio frame, subframe, slot and symbol synchronization in the time domain, identify the center of the channel (system) bandwidth in the frequency domain, and identify the physical cell of the cell.

The PBCH in the SSB may further include a master information block (MIB) containing various system information along with parameters for decoding the system information block (SIB). The SIB may be, for example, SIB1 (SystemInformationType 1), which may include various additional system information. MIB and SIB1 together provide the minimum system information (SI) for initial access. Examples of system information transmitted in MIB include subcarrier interval (eg, default downlink numerology), system frame number, configuration of PDCCH control resource set (CORESET) (eg, PDCCH CORESET0), cell prohibition indicator, It may include, but is not limited to, a cell reselection indicator, a raster offset, and a search space for . Examples of remaining minimum system information (RMSI) transmitted in SIB1 may include, but are not limited to, random access search space, paging search space, downlink configuration information, and uplink configuration information. The base station can also transmit other system information (OSI).

In UL transmission, a scheduled entity (e.g., UE) uses one or more REs (306) to carry UL control information (UCI), including one or more UL control channels, such as a physical uplink control channel (PUCCH), to the scheduling entity. ) can also be used. UCI may include various packet types and categories including pilots, reference signals, and information configured to enable or assist in decoding the uplink data transmission. Examples of uplink reference signals may include sounding reference signals (SRS) and uplink DMRS. In some examples, the UCI may include a scheduling request (SR), i.e., a request to a scheduling entity to schedule an uplink transmission. Here, in response to the SR transmitted on UCI, the scheduling entity may transmit downlink control information (DCI) that may schedule resources for uplink packet transmission. UCI may also include channel state feedback (CSF) such as HARQ feedback, CSI reporting, or any other suitable UCI. In some aspects, a UE may use various enhancement techniques described herein for PUCCH transmission to increase coverage of the PUCCH.

In addition to control information, one or more REs 306 (e.g., within data area 314) may be assigned for data traffic. Such data traffic may be transmitted on one or more traffic channels, such as, for DL transmissions, Physical Downlink Shared Channel (PDSCH); Or, for UL transmission, it may be carried on the Physical Uplink Shared Channel (PUSCH). In some examples, one or more REs 306 within data area 314 may be configured to carry one or more SIBs and other signals, such as . In some examples, the PDSCH may carry multiple SIBs, including but not limited to SIB1 discussed above. For example, OSI may be provided in these SIBs, for example SIB2 or higher.

In the example of sidelink communication via a sidelink carrier via a proxy service (ProSe) PC5 interface, the control area 312 of the slot 310 is the initiating (transmitting) sidelink device (e.g., a Tx V2X device or other A physical sidelink control channel (PSCCH) containing sidelink control information (SCI) transmitted by a Tx UE) toward a set of one or more other receiving sidelink devices (e.g., an Rx V2X device or another Rx UE) It may also include . Data area 314 of slot 310 is a physical area containing sidelink data traffic transmitted by an initiating (transmitting) sidelink device within resources reserved on a sidelink carrier by a transmitting sidelink device via SCI. It may also include a sidelink shared channel (PSSCH). Other information may be additionally transmitted via various REs 306 within slot 310. For example, HARQ feedback information may be transmitted from a receiving sidelink device to a transmitting sidelink device in physical sidelink feedback (PSFCH) within slot 310. Also, within slot 310, sidelink SSB, sidelink CSI- One or more reference signals, such as RS, sidelink SRS, and/or sidelink Positioning Reference Signal (PRS), may be transmitted.

These physical channels described above are typically multiplexed and mapped into transport channels for handling at the medium access control (MAC) layer. Transport channels carry blocks of information called transport blocks (TB). The transport block size (TBS), which may correspond to the number of bits of information, may be a controlled parameter, based on the number of RBs in a given transmission and the modulation and coding scheme (MCS).

The channels or carriers illustrated in FIGS. 1-3 are not necessarily all of the channels or carriers that may be utilized between devices, and those skilled in the art will understand that other channels or carriers may be used, such as other traffic, control, and feedback channels. , it will be recognized that it may be used in addition to those exemplified.

These physical channels described above are typically multiplexed and mapped into transport channels for handling at the medium access control (MAC) layer. Transport channels carry blocks of information called transport blocks (TB). The transport block size (TBS), which may correspond to the number of bits of information, may be a controlled parameter, based on the number of RBs in a given transmission and the modulation and coding scheme (MCS).

In some aspects of the present disclosure, a scheduling entity and/or scheduled entity may be configured for beamforming and/or multiple-input multiple-output (MIMO) technology. The diagram also shows an example of a wireless communication system 400 that supports MIMO. In a MIMO system, transmitter 402 includes multiple transmit antennas 404 (e.g., N transmit antennas) and receiver 406 includes multiple receive antennas 408 (e.g., M receive antennas). antennas). Accordingly, there are N×M signal paths 410 from transmit antennas 404 to receive antennas 408. Each of transmitter 402 and receiver 406 may be implemented within, for example, a scheduling entity 108, a scheduled entity 106, or any other suitable wireless communication device.

The use of this multiple antenna technology allows wireless communication systems to utilize the spatial domain to support spatial multiplexing, beamforming, and transmit diversity. Spatial multiplexing may be used to simultaneously transmit different streams of data, referred to as layers, on the same time-frequency resource. Data streams may be transmitted to a single UE to increase data rate or to multiple UEs to increase overall system capacity, the latter referred to as multi-user MIMO (MU-MIMO). This is done by spatially precoding each data stream (i.e., multiplying the data streams with different weighting and phase shifts) and then transmitting each spatially precoded stream over multiple transmit antennas on the downlink. come true The spatially precoded data streams reach the UE(s) with different spatial signatures, which allows each of the UE(s) to recover one or more data streams directed to it. On the uplink, each UE transmits a spatially precoded data stream, which allows the base station to identify the source of each spatially precoded data stream.

The number of data streams or layers corresponds to the rank of transmission. Generally, the rank of the MIMO system 400 is limited to the number of transmit or receive antennas 404 or 408, whichever is smaller. Additionally, channel conditions at the UE as well as other considerations such as available resources at the base station may also affect the transmission rank. For example, the rank (and therefore the number of data streams) assigned to a particular UE on the downlink may be determined based on a rank indicator (RI) transmitted from the UE to the base station. RI may be determined based on the antenna configuration (e.g., number of transmit and receive antennas) and the signal-to-interference and noise ratio measured on each receive antenna. RI may indicate, for example, the number of layers that may be supported under current channel conditions. The base station may use RI, along with resource information (e.g., available resources and amount of data to be scheduled for the UE), to assign a transmission rank to the UE.

In time division duplex (TDD) systems, UL and DL are opposites in that each uses different time slots of the same frequency bandwidth. Accordingly, in TDD systems, the base station may assign a rank to DL MIMO transmissions based on UL SINR measurements (e.g., based on the sounding reference signal (SRS) or other pilot signal transmitted from the UE). may be Based on the assigned rank, the base station may then transmit CSI-RS with separate C-RS sequences for each layer to provide for multi-layer channel estimation. From the CSI-RS, the UE measures the channel quality across layers and resource blocks and determines the modulation and coding scheme to be used for transmission to the UE (for use in updating the rank and assigning REs for future downlink transmissions). The channel quality indicator (CQI) and RI indicating the MCS) to the base station may be fed back.

In the simplest case, rank-2 spatial multiplexing transmission for a 2x2 MIMO antenna configuration, as shown in Figure 4, will transmit one data stream from each transmit antenna 404. Each data stream follows a different signal path 410 to reach each receive antenna 408. Receiver 406 may then reconstruct the data stream using the signals received from each receive antenna 408.

Beamforming is signal processing that may be used at a transmitter 402 or a receiver 406 to shape or steer an antenna beam (e.g., a transmit beam or a receive beam) along a spatial path between the transmitter 402 and the receiver 406. It's a technique. Beamforming is accomplished by combining signals communicated via antennas 404 or 408 (e.g., antenna elements of an antenna array module) such that some of the signals experience constructive interference while others experience destructive interference. It could be. To create the desired constructive/destructive interference, transmitter 402 or receiver 406 adds amplitude and amplitude to signals transmitted or received from each of the antennas 404 or 408 associated with transmitter 402 or receiver 406. /Or phase offsets may be applied.

In 5G New Radio (NR) systems, especially for FR2 (millimeter wave) systems, beamformed signals may be used on most downlink channels, including PDCCH and . Additionally, broadcast control information, such as SSB, slot format indicator (SFI), and paging information, is broadcast by all scheduled entities (UEs) within the coverage area of a transmission and reception point (TRP) (e.g., gNB). It may also be transmitted using a beam sweeping method to receive control information. Additionally, in the case of a UE configured with a beamforming antenna array, the beamformed signal can also be used in an uplink channel including PUCCH and . Additionally, beamformed signals can be further utilized in D2D systems such as NR sidelink (SL) or V2X utilizing FR2.

FIG. 5 is a diagram illustrating communication between base station 504 and 502 using beamformed signals in accordance with some aspects. Base station 504 may be any base station (e.g., gNB) or scheduling entity illustrated in Figures 1 and/or 2, and UE 502 may be any of the UEs illustrated in Figures 1 and/or 2. Or it may be any of the scheduled entities.

Base station 504 may generally communicate with UE 502 using one or more transmit beams, and UE 502 may also communicate with base station 504 using one or more receive beams. As used herein, the term transmit beam refers to a beam on base station 504 that can be used for downlink or uplink communications with UE 502. Additionally, the term receive beam refers to a beam on UE 502 that can be used for downlink or uplink communications with base station 504.

In the example shown in Figure 5, base station 504 is configured to generate a plurality of transmit beams 506a-506h, each associated with a different spatial direction. Additionally, UE 502 is configured to generate a plurality of receive beams 508a - 508e each associated with a different spatial direction. Although some beams are illustrated as being adjacent to each other, it should be noted that this arrangement may be different in different aspects. In some examples, transmit beams 506a-506h transmitted during the same symbol may not be adjacent to each other. In some examples, base station 504 and UE 502 may each transmit more or less beams distributed in all directions (e.g., 360 degrees) and in three dimensions. Additionally, the transmission beams 506a-506h may include beams of various beamwidths. For example, base station 504 may transmit certain signals (e.g., SSB) over a wider beam and transmit other signals (e.g., CSI-RS) over a narrower beam.

Base station 504 and UE 502 use beam management procedures to establish one or more transmit beams 506a - 506h on base station 504 and one on UE 502 for communication of uplink and downlink signals between them. One of the above reception beams 508a-508e can be selected. In one example, during initial cell acquisition, UE 502 uses a beam pair link (e.g., one of transmit beams 506a-506h and one of receive beams 506a-506h) for a Physical Random Access Channel (PRACH) procedure for initial access to the cell. A P1 beam management procedure may be performed to scan a plurality of transmission beams on a plurality of reception beams 508a-508e to select one of 508a-508e). For example, periodic SSB beam sweeping may be implemented at base station 504 at specific intervals (e.g., based on SSB periodicity). Accordingly, base station 504 may be configured to sweep or transmit SSBs in each of the plurality of wider transmit beams 506a-506h during the beam sweeping interval. The UE may measure the reference signal received power (RSRP) of each transmission beam on each reception beam of the UE and select the transmission beam and reception beam based on the measured RSRP. In one example, the selected receive beam may be the receive beam for which the highest RSRP has been measured, and the selected transmit beam may have the highest RSRP as measured on the selected receive beam.

After completing the PRACH procedure, the base station 504 and the UE 502 may perform a P2 beam management procedure for beam refinement at the base station 504. For example, base station 504 may be configured to sweep or transmit CSI-RS in each of a plurality of narrower transmission beams 506a-506h. Each narrower CSI-RS beam may be a subbeam of a selected SSB transmit beam (e.g., within the spatial direction of the SSB transmit beam). Transmission of the CSI-RS transmit beam may be performed periodically (e.g., as configured via radio resource control (RRC) signaling by the gNB), and periodically (e.g., as configured via RRC signaling and medium access control by the gNB). -Can occur semi-persistently (as activated/deactivated via a control element (MAC-CE)) or aperiodically (as triggered by the gNB via downlink control information (DCI) for example) . UE 502 is configured to scan a plurality of CSI-RS transmit beams 506a-506h over a plurality of receive beams 508a-508e. The UE 502 then performs beam measurements (e.g., RSRP, SINR, etc.) of the CSI-RS received on each receive beam 508a-508e to determine the measurement of each CSI-RS transmit beam 506a-506h. Each beam quality is determined as measured on each received beam 508a-508e.

The UE 502 then receives a beam index (e.g., CSI-RS Resource Indicator (CRI)) and one of the CSI-RS transmit beams 506a-506h on one or more of the receive beams 508a-508e. A layer 1 (L1) measurement report containing one or more beam measurements (e.g., RSRP or SINR) may be generated and transmitted to the base station 504. Base station 504 may then select one or more CSI-RS transmission beams for communicating downlink and/or uplink control and/or data with UE 502. In some examples, the selected CSI-RS transmit beam(s) have the highest RSRP from the L1 measurement report. Transmission of L1 measurement reports may occur periodically (e.g., as configured via RRC signaling by the gNB) and as activated/deactivated (e.g., as configured via RRC signaling and via MAC-CE by the gNB). (e.g., as triggered by the gNB via DCI), or aperiodically (e.g., as triggered by the gNB via DCI).

The UE 502 may further select a corresponding receive beam on the UE 502 for each selected serving CSI-RS transmission beam to form a respective beam pair link (BPL) for each selected serving CSI-RS transmission beam. You can. For example, UE 502 may utilize beam measurements obtained during the P2 procedure to obtain new beam measurements for the selected CSI-RS transmit beam to select a corresponding receive beam for each selected transmit beam, or P3 This can be done by performing beam management procedures. In some examples, the selected receive beam paired with a particular CSI-RS transmit beam may be the receive beam for which the highest RSRP for the particular CSI-RS transmit beam is measured.

In some examples, in addition to performing CSI-RS beam measurements, base station 504 may also configure UE 502 to perform SSB beam measurements and provide L1 measurement reports that include beam measurements of SSB transmit beams 506a-506h. can be configured. For example, the base station 504 may enable the UE 502 to perform beam failure detection (BRD), beam failure recovery (BFR), cell reselection, (e.g., mobile UE 502 and/or It can be configured to perform SSB beam measurements and/or CSI-RS beam measurements for beam tracking (for the base station 504) or other beam optimization purposes.

Additionally, when the channels are reciprocal, the transmit and receive beams may be selected using an uplink beam management scheme. In one example, UE 502 may be configured to sweep or transmit in each of a plurality of receive beams 508a-508e. For example, UE 502 may transmit SRS on each beam in different beam directions. Additionally, the base station 504 may be configured to receive uplink beam reference signals on a plurality of transmit beams 506a-506h. The base station 504 then performs beam measurements (e.g., RSRP, SINR, etc.) of the beam reference signal on each transmit beam 506a-506h to determine the respective beam quality of each receive beam 508a-508e. Determine as measured on each transmit beam 506a-506h.

Base station 504 may then select one or more transmit beams for communicating downlink and/or uplink control and/or data with UE 502. In some examples, the selected transmit beam(s) have the highest RSRP. The UE 502 then configures the corresponding receive signal for each selected serving transmit beam to form a respective beam pair link (BPL) for each selected serving transmit beam using the P3 beam management procedure, for example as described above. You can select a beam.

In one example, a single CSI-RS transmit beam (e.g., beam) on base station 504 and a single receive beam (e.g., beam) on base station 504 and a single BPL used for communication between base station 504 and UE 502. In another example, multiple CSI-RS transmit beams (e.g., beams 506c, 506d, and 506e) on base station 504 and a single receive beam (e.g., beam 506e) on UE 502. 508c) may form each BPL used for communication between base station 504 and UE 502. In another example, multiple CSI-RS transmit beams (e.g., beams) on base station 504 The multiple received beams (506c, 506d, and 506e) on the UE 502 (e.g., beams 508c and 508d) form multiple BPLs used for communications between the base station 504 and the UE 502. In this example, the first BPL may include a transmit beam 506c and a receive beam 508c, the second BPL may include a transmit beam 508d and a receive beam 508c, and 3 BPL may include a transmit beam 508e and a receive beam 508d.

In some cases, wireless communications may experience signal attenuation (e.g., path loss), which can be affected by various factors such as temperature, barometric pressure, diffraction, etc. As a result, signal processing techniques such as beamforming can be used to overcome path loss at these frequencies. Accordingly, transmissions from a base station (e.g., gNB) and/or UE may be beamformed and the receiving device may use antenna(s) and/or antenna array(s) such that the transmissions are received in a directional manner. Beamforming techniques may also be used to configure. In some cases, a UE (e.g., UE 502) may select an active beam for communication with a network (e.g., base station 504) by selecting the strongest beam from a number of candidate beams. there is. In some cases, multiple UEs (eg, UEs within a group) may use the same beam configuration.

In some cases, wireless communication systems, such as those operating in the millimeter wave frequency range (e.g., FR2), may experience communication losses due to beam weakening or partial blocking. When the beam becomes weak, the base station can perform a beam switching procedure to determine a stronger beam for communication. However, in some instances, the beam may be weak for a short period of time, such that performing a beam switching procedure may result in inefficient use of processing resources or may take longer than the time the beam is temporarily weakened. Additionally, the base station may need to maintain communication with the UE even when the active beam is weak to determine a new beam for selection as needed. For example, it may be important for the base station to receive channel state information (CSI) feedback from the UE to determine a beam for selection. In some cases, maintaining communication with a UE may include maintaining performance thresholds or coverage on a unicast channel (e.g., PUCCH). Coverage on the uplink channel (e.g., PUCCH), which may be enabled dynamically and in some cases instead of beam switching or other beam management procedures to maintain communications when the beam becomes unreliable or weak. It may be beneficial to provide ways for improvement.

Explicit repetition factor indication for PUCCH

In some aspects, the base station may explicitly signal the UE to use repetition on the uplink control channel for coverage enhancement. For example, one or more repetitions of a PUCCH transmission may be transmitted within a slot and/or across multiple slots. 6 is a diagram illustrating a process for explicitly indicating a PUCCH repetition factor in accordance with some aspects. Using the PUCCH repetition factor (e.g., repetition count), base station 602 (e.g., gNB) can cause UE 604 to transmit repetitions of PUCCH transmissions when necessary. In some aspects, repeating PUCCH transmission may improve coverage and/or reliability of the PUCCH. In some aspects, the UE may repeat PUCCH transmission using the same or different communication resources (eg, PUCCH resource sets).

At block 606, UE 604 may determine one or more PUCCH resource sets for PUCCH transmission 608. The base station may configure communication resources (eg, PUCCH resource set) for PUCCH transmission in various formats and/or code rates. In one example, the base station may transmit resource configuration 607 to the UE using RRC signaling (e.g., PUCCH_Config RRC message). In one aspect, a PUCCH resource configuration may define one or more sets of PUCCH resources (e.g., time domain and frequency domain resources) that can be used by the UE for PUCCH transmission. The UE may store the resource configuration (e.g., enhancement configuration 1415) in memory 1405 or computer-readable medium 1406 (see FIG. 14). Each PUCCH resource set may define the PUCCH format, first symbol, number of symbols, PRB offset, etc. of communication resources (e.g., one or more RBs 308) that can be used for PUCCH transmission. In some aspects, PUCCH resource sets may be predefined or predetermined in applicable communication standards (e.g., 3GPP NR standards), or may be preconfigured by the device manufacturer of the UE or base station. As an example, the base station may indicate the PUCCH resource set to be used by transmitting a PUCCH resource indicator in DCI or SIB1 when predefined PUCCH resource sets are used.

In some scenarios, base station 602 may dynamically configure UE 604 to repeat PUCCH transmissions (i.e., PUCCH repetitions), for example, to improve PUCCH coverage if necessary. Dynamically configuring or signaling PUCCH repetitions allows the UE to start, stop or change PUCCH repetitions without using or semi-static signaling. If PUCCH repetition is used, UE 604 may repeat PUCCH transmission in a predetermined number of slots or mini-slots. To this end, the base station 602 may transmit a first PUCCH repetition indication 610 to the UE 604 to explicitly indicate the PUCCH repetition factor. Base station 602 may transmit the first PUCCH repetition indication 610 using dynamic signaling. For example, base station 602 may transmit a first PUCCH repetition indication 610 via DCI towards UE 604. In one example, base station 602 may transmit the first PUCCH repetition indication 610 via a medium access control (MAC) control element (CE). In response to the first PUCCH repetition indication 610 , the UE 604 may repeat the PUCCH transmission 612 (i.e., a repetition of the PUCCH transmission) according to the first PUCCH repetition indication 610 .

In some aspects, the first PUCCH repetition indication 610 may explicitly indicate a PUCCH repetition factor (PRF) that controls PUCCH repetitions so that the UE 604 can determine the PRF directly from the repetition indication 610. . In one aspect, the first PUCCH repetition indication 610 may represent a value represented as a bit string (e.g., one or more bits), for example, corresponding to a value (e.g., a binary value) of the PRF. For example, if the value of PRF is 2, the bit string may be '10'; If the value of PRF is 3, the bit string may be '11', and if the value of PRF is 4, the bit string may be '100'. 7 shows a table illustrating example bit string values and corresponding PUCCH repetition factors according to an aspect. In this example, the bit string '000' is not used or reserved. The bit string values (000-111) represent values 1 through 7 for PRF, respectively.

In some aspects, the first PUCCH repetition indication 610 may represent a value, such as a bit string representing an index value for identifying a PRF among a plurality of predefined PUCCH repetition factors. For example, a plurality of predefined PUCCH repetition factors may be stored in the UE and may be defined in a table, database, or list (e.g., repetition factors 1417 in FIG. 14), and the PUCCH repetition indication may be defined in advance. An index for identifying a desired PRF among defined PUCCH repetition factors (e.g., see table 700 of FIG. 7) may be indicated.

In some aspects, the UE may transmit a PUCCH repetition request 620 to the base station 602 for a UE-specific PUCCH repetition factor. In one aspect, the UE may send a repeat request 620 in UCI. In another aspect, the UE may transmit a repeat request 620 in the MAC CE. In one aspect, repetition request 620 may indicate the number of PUCCH repetitions desired by the UE. In one aspect, repeat request 620 may indicate that the UE requests PUCCH repetitions but does not indicate the number of PUCCH repetitions requested or desired. In one example, repeat request 620 may indicate a need for PUCCH repetition, and base station 602 may determine a value for the PUCCH repetition factor or PUCCH repetition count. In one example, if the UE is already configured to repeat PUCCH, request 620 may indicate a need to increase or decrease the PUCCH repetition factor or repetition count.

In one aspect, in response to the request 620, the base station 602 may transmit a second PUCCH repetition indication 622 to the UE. In one aspect, the second PUCCH repetition indication 622 may explicitly indicate the PUCCH repetition factor, for example using a bit string as described above. In one aspect, the second PUCCH repeat indication 622 may indicate an acknowledgment (e.g., grant or disapprove) without explicitly indicating the PUCCH repetition factor if the request 620 explicitly indicates the desired PUCCH repetition factor. You can. In response to the second PUCCH repetition indication 622, the UE may repeat the PUCCH transmission 624 according to the second PUCCH repetition indication 622.

In some aspects, base station 602 may indicate the PUCCH repetition factor with reference to a previous PUCCH repetition factor. For example, the second PUCCH repetition indication 622 may refer to the previous PUCCH repetition factor indicated by the first PUCCH repetition indication 610, for example, to allow the UE to increase (e.g., increase by a factor of 2) the PUCCH repetition factor. Or it may indicate that it can be reduced.

In one aspect, the PUCCH repetition indication may indicate that the PUCCH repetition factor is valid for a predetermined time interval (valid time interval). In one aspect, the base station may configure the UE to use a timer (e.g., timer 1430 in Figure 1430) to track the validity time of the PUCCH repetition factor. The PUCCH repetition factor is valid for the validity time. The time interval is After elapsed, the UE may stop PUCCH repetition.For example, a predetermined time interval may include a predetermined number of slots or mini-slots.In one aspect, the PRF allows the UE to change the PUCCH repetition factor. It may remain in effect until receiving another or next PUCCH repeat indication (e.g., increase, decrease, or stop) or cancel it.

8 is a flow diagram illustrating a process 800 for transmitting a request for PUCCH repetition factor in accordance with some aspects. In one example, a UE (e.g., UE 604) processes a base station (e.g., base station 602) to determine whether to transmit a repeat request (e.g., PUCCH repeat request 620). (800) can be used.

At block 802, the UE may check one or more PUCCH repetition criteria to determine whether to transmit a PUCCH repetition request. In one aspect, the PUCCH repetition criteria may include UL and/or DL channel quality between the UE and the base station. For example, channel quality may include signal-to-noise ratio (SNR), signal-to-interference-plus-noise ratio (SINR), and/or signal-to-noise-plus-distortion ratio (SNDR) of the communication channel between the UE and the base station. In one aspect, the PUCCH repetition criteria may include historical data for communications between the UE and the base station. For example, historical data may indicate that a communication failure occurred between the UE and the base station during a predetermined time interval. A high communication failure rate can indicate poor, unstable or undesirable channel quality and vice versa. In some aspects, the base station may provide a PUCCH repetition reference to the UE using, for example, RRC signaling, DCI, and/or MAC CE.

At decision block 804, the UE may determine whether one or more of the PUCCH repetition criteria are met. In one example, the PUCCH repetition criterion is met when the channel quality (e.g., SNR, SINR, and/or SNDR) is below a predetermined threshold. In one example, the repetition criterion is met when historical data indicates a high communication failure rate between the UE and the base station. For example, if the UE fails to transmit HARQ feedback to the base station, the PUCCH repetition criterion may be satisfied.

At block 806, the UE may transmit a PUCCH repeat request (e.g., request 620) to the base station when one or more PUCCH repetition criteria are met (i.e., YES path from decision block 804). A PUCCH repetition request may cause the base station to transmit a PUCCH repetition indication to the UE as described above with respect to FIG. 6. In one aspect, the PUCCH repetition criteria may include conditions of communication between the UE and the base station. For example, the conditions may include SNR, SINR and/or SNDR of the communication channel between the UE and the base station. In this case, the condition of the PUCCH repetition criterion is met when any of SNR, SINR and/or SNDR is below a predetermined threshold.

Explicit repetition factor indication for PUCCH

9 illustrates an example of an implicit indication of a repetition factor for an uplink control channel in accordance with some aspects. Wireless network 900 may implement aspects of RAN 200 . Wireless network 900 may include base station 905 and/or UE 910, which may be examples of corresponding devices described herein.

The wireless network 900 may support various PUCCH enhancement techniques to improve coverage. In some aspects, wireless network 900 may use a signaling mechanism that supports DMRS bundling across PUCCH repetitions as well as certain coverage enhancements. Some wireless networks may use group common DCI to indicate PUCCH coverage enhancements, such as pre-configured PUCCH repetitions. However, such a mechanism cannot dynamically indicate the repetition factor for PUCCH transmissions with repetition. The repetition factor may indicate the number, count, or amount of repetitions of a PUCCH transmission, wherein the same PUCCH transmission (e.g., an instance or occurrence of a single PUCCH message) is repeated once depending on the repetition factor (e.g., repetition count). It may be transmitted more than once. .

Aspects of the described technique imply a correspondence or mapping between each of the available transmit beams of base station 905 to a repetition factor (e.g., repetition count) for the uplink control channel (e.g., PUCCH). A mechanism to display can be provided. That is, the base station 905 may perform wireless communication with the UE 910 using one or more transmission beams (eg, the beams described in FIG. 5). In this context, a transmit beam may generally refer to any beam/transmission conducted in a directional manner that can correspond (e.g., based on a beam index or other identifier) to a specific transmit beam, antenna configuration, antenna port, antenna array, etc. You can. In some aspects, each transmit beam of base station 905 is uniquely identified or otherwise associated with identifiable characteristics and/or parameters (e.g., a Transmission Configuration Indicator (TCI) configuration, part of a resource configuration, etc.) It can be.

Base station 905 may transmit or otherwise provide (and UE 910 may receive or otherwise obtain) a configuration signal that identifies or indicates a correspondence between transmission beams of base station 905 and a particular PUCCH repetition factor. can). For example, the base station 905 configures (eg, L3 signaling) to indicate a correspondence or mapping to the UE 910 using RRC signaling, higher layer signaling (eg, L3 signaling), MAC CE signaling, and the like. A Tx beam-PUCCH repetition configuration (912) may be transmitted. For example, the configuration may generally map each transmit beam of base station 905 to a corresponding repetition factor for a PUCCH transmission. For example, each transmit beam of base station 905 may be unique or mapped to a different repetition factor for PUCCH transmissions with repetition (e.g., uplink control message). In another example, each subset or group of transmit beams of base station 905 may be mapped to a unique repetition factor for PUCCH repetition. The configuration 912 may be indicated initially (eg, when the UE 910 establishes a connection with the base station 905 during a connection establishment/re-establishment/update procedure) and/or (eg, periodically It may be updated by the base station 905 (according to a schedule, according to an aperiodic schedule, and/or as needed). Accordingly, the association or correspondence of the transmit beam (or TCI state) and the PUCCH repetition factor can be dynamically changed using downlink MAC CE, DCI, etc. The UE 910 may store or otherwise maintain (e.g., in memory, in a lookup table 914, etc.) the correspondence between the transmit beam of the base station 905 and the PUCCH repetition factor. A configuration showing a correspondence relationship may map one or more transmission beams of the base station 905 to two or more repetition counts, and in some cases, one or more transmission beams of the base station 905 to one repetition factor (e.g. For example, one or more transmit beams of base station 905 may be mapped to no repetition).

Accordingly, UE 910 may identify or determine that it has a first uplink control message (e.g., PUCCH message) for transmission with repetition. For example, UE 910 may determine that it has an uplink control message transmission with repetition based on receiving a downlink shared channel transmission (e.g., a PDSCH message), wherein the first uplink control message Can be used to provide HARQ-ACK feedback (e.g., a feedback message). In another example, the UE 910 may update the UE 910 with repetitions based on the buffer status of the UE 910 (e.g., based on having a buffer status report (BSR) for transmission, scheduling request (SR), etc.). It may be determined that a link control message has to be transmitted. In another example, UE 910 may determine that it has an uplink control message transmission with repetition based on channel state information (CSI) feedback to provide to base station 905 . Other examples of uplink control information/data may also be the basis for transmitting the first uplink control message with repetition.

Based on the first uplink control message, base station 905 and/or UE 910 may configure a first uplink signal based on the active transmit beam or transmit configuration indicator state (e.g., TCI state) of base station 905. A first repetition factor for a link control message may be identified, selected, or otherwise implicitly determined. For example, the active transmit beam of base station 905 may include one of one or more transmit beams of base station 905. The base station 905 and/or the UE 910 may identify a first repetition factor for the first uplink control message and a repetition factor for uplink control channel transmissions having repetition with the transmit beams of the base station 905. A configuration 914 (e.g., a look-up table) may be used to represent the correspondence between. That is, the base station 905 and/or the UE 910 may determine a corresponding first repetition factor for transmitting repetitions of the first uplink control message based on the active transmit beam of the base station 905, and thus the corresponding first repetition. You can use that correspondence or mapping to determine the count. Accordingly, UE 910 may transmit or otherwise provide (and base station 905 may receive or otherwise obtain) repetitions of the first uplink control message as indicated by the first repetition factor. For example, UE 910 may transmit three repetitions 920 of the first uplink control message corresponding to the first repetition count. In other examples, the repetition count may be 1, 2, 4, or more.

Accordingly, aspects of the described technology enable base station 905 and/or UE 910 to know, identify, or otherwise determine the active transmit beam of base station 905 to implicitly identify the associated repetition factor. can be provided. As described above, each transmission beam of the base station 905 may correspond to a beam index, antenna configuration, antenna port, transmission direction, etc. Transmit beams can be based on various configurations/parameters such as TCI status, resource configuration, etc.

In one example, the active transmit beam of base station 905 may include the current (active) control beam of base station 905. For example, the active control beam of base station 905 may be considered an active transmit beam for repetition factor determination. In one example, the active control beam of base station 905 may correspond to a transmission beam used for control message transmission (e.g., PDCCH transmission) from base station 905. Accordingly, in one example, the PUCCH repetition factor may be associated with the current control beam of base station 905.

In another example, the active transmit beam of base station 950 may be based on PDSCH transmission. For example, base station 905 may assign or otherwise schedule downlink shared channel (e.g., PDSCH) transmissions to UE 910. The downlink shared channel transmission is such that the UE 910 is expected to provide a feedback message (e.g., ACK or NACK) indicating whether the UE 910 was able to receive and decode the downlink shared channel transmission (e.g., ACK or NACK). It may also be configured in acknowledgment mode (e.g., with HARQ-ACK feedback). In this example, the transmit beam used for downlink shared channel transmission may be the active transmit beam of base station 905 for repetition factor determination. That is, the base station 905 and/or the UE 910 determines the transmission beam used by the base station 905 to perform downlink shared channel transmission, and indicates the correspondence between the transmission beam and the corresponding repetition factor. You can access and use this correspondence relationship to determine the repetition count for repeatedly transmitting the feedback message. Accordingly, the repetition factor for a PUCCH transmission carrying ACK/NACK information may be associated with the beam or TCI status (e.g., beam configuration) of the associated PDSCH or downlink message.

As described above, in some cases the active transmit beam of base station 950 may be identified based on, or alternatively using, TCI status, resource configuration, etc. For example, base station 905 may configure various TCI state configurations within higher layer signaling (e.g., RRC signaling) that may be used by UE 910 to decode the PDSCH transmission. The active transmit beam of base station 905 may be determined or otherwise identified based on the TCI state configured for UE 910.

In some examples, the active transmit beam of base station 905 may be identified or otherwise determined based on a quasi-collocation (QCL) relationship. For example, the base station 905 may transmit a DCI message to the UE 910 configuring various parameters, such as the QCL relationship between the downlink reference signal and the PDSCH DMRS port in one CSI-RS set. If the properties of the channel through which symbols on one antenna port are transmitted can be inferred from the channel through which symbols on another antenna port are transmitted, a QCL relationship may identify two antenna ports that are considered to be pseudo-collapsed. Accordingly, base station 905 and/or UE 910 can identify the second transmit beam of base station 905 . The second transmit beam may be used for several signals transmitted by base station 905 . For example, the second transmission beam of the base station 905 may be transmitted for broadcast transmission (e.g., SSB transmission), synchronization signal transmission (e.g., PSS/SSS such as PSS/SSS of SSB), and reference signal transmission (e.g., SSB transmission). For example, it can be used for transmission of CSI-RS), tracking signal transmission (position tracking signal, location tracking signal, etc.). Base station 905 and/or UE 910 may identify or determine the active transmit beam of base station 905 based on the QCL relationship between the second transmit beam and the active transmit beam to identify or determine the active transmit beam. .

In some examples, base station 905 may dynamically override the correspondence between one or more transmit beams of base station 905 and their corresponding repetition factors. That is, the base station 905 may transmit or otherwise provide an indication to override the response for the active transmit beam of the base station 905 from the first repetition factor to the updated repetition factor associated with the updated repetition count. (And UE 910 may receive or otherwise acquire). Accordingly, UE 910 may use the updated repetition count to transmit repetitions of the first uplink control message based on the overriding indication. In some examples, the dynamic override indication may be signaled using DCI signaling, MAC CE signaling, etc.

Accordingly, the UE 910 may transmit or otherwise provide (and the base station 905 may receive or otherwise obtain) repetitions of the first uplink control message based on the first (or updated) repetition factor/count. can do). PUCCH repetitions may be transmitted using inter-slot repetition and/or intra-slot repetition. The above-described technique may enable the base station 905 to implicitly indicate the PUCCH repetition factor to the UE 910 through beam selection (e.g., by associating the beam with the PUCCH repetition factor).

FIG. 10 illustrates an example process 1000 supporting implicit indication of a repetition factor for an uplink control channel in accordance with aspects of the present disclosure. Process 1000 may be implemented in or by wireless network 200. Aspects of process 1000 may be implemented by base station 1002 and/or UE 1004, which may be examples of corresponding devices described herein.

At 1010, the base station 1002 may transmit or otherwise provide a configuration indicating a correspondence between one or more transmit beams of the base station 1002 and a repetition factor for an uplink control channel (e.g., PUCCH) transmission. (And UE 1004 may receive or otherwise acquire). In some aspects, the repetition factor may identify or otherwise indicate a repetition count for transmitting repetitions of uplink control messages on an uplink control channel (e.g., PUCCH). In some aspects, base station 1002 may transmit a configuration 1010 indicating its response via higher layer signaling, RRC signaling, etc. In some aspects, a configuration may indicate a correspondence between one or more of the transmit beams of base station 1002 and a repetition count of 1 (e.g., no repetition). In some aspects, a configuration may indicate a correspondence between one or more of the transmit beams of base station 1002 and a repetition count of two or more repetitions. In one example, base station 1002 configures a first subset of transmit beams with repetition counts of 2 or more repetitions and a second subset of transmit beams with repetition counts of 1 (which may be referred to as no repetition in some examples). It can be configured. Accordingly, the configured correspondence may map the transmit beam(s) of base station 1002 to one or more repetition counts for PUCCH transmission with repetition.

At 1015, base station 1002 identifies a first repetition factor for the first uplink control message from UE 1004 based on active transmit beams of base station 1002 from one or more transmit beams, according to their correspondence. You can decide either or not. For example, the base station 1002 may identify an active transmit beam based on the QCL relationship between the active transmit beam and the TCI state configuration, broadcast beam, synchronization signal beam, tracking signal beam, reference signal beam, etc. provided to the UE 1004. You can. In some aspects, base station 1002 may identify or otherwise determine an active transmit beam based on a current control beam being used by base station 1002.

At 1020, the UE 1004 may correspondingly identify or otherwise determine a first repetition factor for the first uplink control message to the base station 1002 based on the active transmit beam of the base station 1002. . For example, the UE 1004 may transmit at the base station 1002 based on the QCL relationship between the TCI state configuration, broadcast beam, synchronization signal beam, tracking signal beam, reference signal beam, etc. provided by the base station 1002 and the active transmit beam. The active transmission beam can be identified. In some examples, this may include the UE 1004 identifying or otherwise determining an active transmit beam based on the current control beam being used by the base station 1002.

At 1025, the UE 1004 transmits repetitions of the first uplink control message (e.g., UCI/PUCCH) as indicated by the first repetition factor, with three repetitions 1026 shown by way of example only. or may otherwise provide (and base station 1002 may receive or otherwise acquire). For example, UE 1004 may send a first uplink control message (e.g., For example, repetitions of PUCCH) can be transmitted. In some aspects, repetitions of the first uplink control message may be transmitted using intra-slot repetition and/or inter-slot repetition.

At 1030, the base station 1002 may optionally transmit or otherwise provide an indication to override the correspondence of the active transmit beam of the base station 1002 from the first repetition factor to the updated repetition factor (and the UE 1004 ) can be received or otherwise acquired). Typically, the updated repetition factor (eg, the second repetition factor) may have a different repetition count than the first repetition factor. That is, the updated repetition factor may represent or be associated with an updated repetition count that is different from the first repetition count associated with the first repetition factor.

Accordingly, at 1035, repetition of the first uplink control message and/or the second uplink control message to the base station 1002 according to the updated repetition factor, with two exemplary repetitions 1036 shown by way of example only. UE 1004 may optionally transmit or otherwise provide (and base station 1002 may receive or otherwise acquire). That is, the override indication 1030 is transmitted through the uplink control channel by the base station 1002 dynamically (e.g., using an indication in DCI signaling, MAC CE, etc.) and repeatedly with the transmit beams of the base station 1002. A mechanism may be provided to change or update the correspondence between repetition factors for uplink control messages.

Iteration factor analysis based on PUCCH parameters

In some aspects, the PUCCH repetition factor or indication may be applied or interpreted differently depending on the PUCCH repetition parameter. The PUCCH repetition factor may be indicated explicitly or implicitly, for example, using the method described above in FIGS. 6-10. In some aspects, PUCCH parameters may include PUCCH format, UCI size, PUCCH resource set, and/or code rate of PUCCH transmission. By dynamically indicating the PUCCH repetition factor, the configuration for PUCCH repetitions can be adapted to improve the chances of receiving PUCCH repetitions. As a result, some aspects of the technology and devices described herein can have a positive impact on network performance.

In some aspects, the UE may select a PUCCH resource set from one or more (e.g., up to four) configured PUCCH resource sets based on UCI payload size (e.g., not including cyclic redundancy check (CRC)). You can decide or choose. Each PUCCH resource set includes specific communication resources (e.g., time and frequency resources or RB 308) that can be used for PUCCH transmission. In some cases, selection of a PUCCH resource set may be based on a comparison between the UCI payload size ( O _UCI ) and the threshold associated with each PUCCH resource set. A PUCCH resource set may have different thresholds. For example, the threshold for PUCCH resource set 0 may be 2 bits, meaning that the UE can select PUCCH resource set 0 for 1-bit or 2-bit O _UCI . If O _UCI > 2, the UE may select a PUCCH resource set with a higher threshold (e.g., greater than 2 bits).

In one example, PUCCH resource sets 1, 2, and may each be individually configured with a threshold (e.g., up to 1706 bits, which is a chosen limit for the coding chain to ensure good performance). If the threshold parameter for a PUCCH resource set (1, 2, or 3) is not configured, the threshold can be assumed to be 1706, meaning that the PUCCH resource set can support a maximum of 1706 bits. A UE with O _UCI > 2 can sequentially compare O _UCI with the thresholds for format sets 1, 2, and , respectively, and determine an appropriate PUCCH resource set for PUCCH transmission.

FIG. 11 is a diagram illustrating a process 1100 associated with dynamic indication of a PUCCH repetition factor in accordance with some aspects of the present disclosure. For example, process 1100 may be used between a base station and a UE to interpret a PUCCH repetition factor or indication, which may be explicitly or implicitly indicated as described above with respect to FIGS. 6-11.

At block 1102, the UE may receive a configuration from the base station that includes one or more rules associated with one or more PUCCH parameters to dynamically determine or interpret the PUCCH repetition factor indication. For example, the UE may receive a radio resource control (RRC) message that provides configuration (e.g., control information) for dynamic interpretation of the PUCCH repetition factor or indication, as described below. In some aspects, the configuration may include one or more rules (e.g., constraints) associated with PUCCH formats, UCI size, PUCCH resource sets, or code rates, among other examples, to interpret the PUCCH repetition factor indication. can be provided. In some aspects, one or more rules may be specified in a wireless communication standard (e.g., 5G NR) that governs communication between a UE and a base station. In some aspects, the UE may be configured by the base station to display a Red flag) One or more rules that dynamically determine the value of the PUCCH repetition factor can be used. For example, one or more rules may define the interpretation of the value associated with one or more PUCCH parameters relative to the value of the repetition factor. In some aspects, the PUCCH parameter may include at least one of the PUCCH format, UCI size, PUCCH resource set, or code rate of the PUCCH.

At block 1104, the UE may determine one or more PUCCH parameters currently configured for the UE. For example, one or more PUCCH parameters may include PUCCH format, UCI size, PUCCH resource set, and/or code rate of PUCCH transmission. At block 1106, the UE may determine the PUCCH repetition factor based on one or more PUCCH parameters and one or more rules for interpreting the indication of the PUCCH repetition factor, which may be explicitly or implicitly indicated by the base station.

In one aspect, the UE may determine the PUCCH format and determine the PUCCH repetition factor based at least in part on rules associated with the PUCCH format (e.g., PUCCH formats 0-4). When the UE receives an explicit or implicit indication of the PUCCH repetition factor from the base station, the UE interprets the indication (e.g., a first value) based on the associated rule to determine the PUCCH repetition factor for controlling repetitions of PUCCH transmissions. A second value may be reached that is a real or valid value (e.g., a count). In one aspect, the PUCCH repetition factor may be limited to one or more PUCCH formats. For example, the indication of the PUCCH repetition factor may be valid (or limited to) only for one or more PUCCH formats according to configured rules. If the UE determines that the PUCCH repetition factor is invalid, the UE does not repeat the PUCCH.

In one aspect, the UE may determine a UCI size and/or code rate for transmission and determine a PUCCH repetition factor based at least in part on rules associated with the UCI size and/or code rate. For example, the UE may explicitly transmit based on rules related to UCI size and/or code rate to arrive at an actual or effective value (e.g. a second value) of the PUCCH repetition factor for controlling the repetition of PUCCH transmissions. Alternatively, an implicit PUCCH repetition factor indication (eg, first value) may be interpreted. In one example, the indication of the PUCCH repetition factor may be valid (or limited to) only for one or more UCI sizes and/or code rates according to configured rules. If the UE determines that the PUCCH repetition factor is invalid, the UE does not repeat the PUCCH.

In one aspect, a UE may determine a PUCCH resource set for transmission and determine a PUCCH repetition factor based at least in part on a rule associated with the PUCCH resource set. For example, the UE may explicitly or implicitly transmit PUCCH based on rules associated with the PUCCH resource set to arrive at an actual or effective value (e.g., a second value) of the PUCCH repetition factor for controlling the repetition of PUCCH transmissions. A repetition factor indication (e.g., first value) may be interpreted. In one example, the indication of the PUCCH repetition factor may be valid (or limited to) only for one or more sets of PUCCH resources according to configured rules.

After determining the PUCCH repetition factor, the UE may transmit at least one PUCCH repetition (e.g., repeated PUCCH transmissions in one or more slots) based at least in part on the dynamically determined PUCCH repetition factor, if it is valid. As described above, the figure provides an example in which the UE may dynamically determine and apply an explicit or implicit indicated PUCCH repetition factor that may be interpreted differently based on one or more PUCCH parameters and one or more rules for interpreting the repetition factor. to provide. Rules can be pre-configured or configured by the base station.

FIG. 12 is a block diagram illustrating an example hardware implementation for scheduling entity 1200 employing processing system 1214. For example, scheduling entity 1200 may be a base station, gNB, or RRH as shown in any one or more of FIGS. 1, 2, 5, 6, 9, and/or 10.

Scheduling entity 1200 may be implemented with a processing system 1214 that includes one or more processors 1204. Examples of processors 1204 include microprocessors, microcontrollers, digital signal processors (DSPs), field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, It includes gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described throughout this disclosure. In various examples, scheduling entity 1200 may be configured to perform any one or more of the functions described herein. That is, processor 1204, as utilized in scheduling entity 1200, may be used to implement any one or more of the processes and procedures described below and illustrated in FIG. 13.

Processor 1204 may, in some cases, be implemented via a baseband or modem chip, and in other implementations, processor 1204 may operate cooperatively to achieve examples discussed herein, e.g. In such scenarios), it may also include a number of devices separate from or different from the baseband or modem chip. And, as mentioned above, various hardware arrangements and components external to the baseband modem processor may be present in implementations, including RF chains, power amplifiers, modulators, buffers, interleavers, adders/summers, etc. can be used

In this example, processing system 1214 may be implemented with a bus architecture generally represented by bus 1202. Bus 1202 may include any number of interconnecting buses and bridges depending on the specific purpose and overall design constraints of processing system 1214. Bus 1202 supports various circuits, including one or more processors (represented generally by processor 1204), memory 1205, and computer-readable media (represented generally by computer-readable media 1206). Communicatively couple. Bus 1202 may also link various other circuits, such as timing sources, peripherals, voltage regulators, and power management circuits, which are well known in the art and will not be described further. Bus interface 1208 provides an interface between bus 1202 and transceiver 1210. Transceiver 1210 and antenna array 1220 may provide a communication interface or means for communicating with various other devices via a transmission medium. Depending on the nature of the device, a user interface 1212 (e.g., keypad, display, speaker, microphone, joystick, touchscreen) may also be provided. Of course, this user interface 1212 is optional and may be omitted in some examples, such as a base station.

Processor 1204 is responsible for general processing, including managing bus 1202 and execution of software stored on computer-readable medium 1206. The software, when executed by processor 1204, causes processing system 1214 to perform various functions described below for any particular device. Computer-readable media 1206 and memory 1205 may also be used to store data that is manipulated by processor 1204 when executed by software. For example, the scheduling entity may store uplink control enhancement configuration information 1215 in memory 1205.

One or more processors 1204 in the processing system may execute software. Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, consists of instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules. , applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, etc. The software may reside on a computer-readable medium 1206. Computer-readable media 1206 may be non-transitory computer-readable media. Non-transitory computer-readable media include, for example, magnetic storage devices (e.g., hard disks, floppy disks, magnetic strips), optical disks (e.g., compact disks (CDs) or digital versatile disks (DVDs)), Smart card, flash memory device (e.g., card, stick, or keydrive), random access memory (RAM), read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically Includes erasable PROM (EEPROM), registers, removable disks, and any other suitable medium for storing software and/or instructions that may be accessed and read by a computer. Computer-readable medium 1206 may reside within processing system 1214, external to processing system 1214, or distributed across multiple entities including processing system 1214. Computer-readable medium 1206 may be implemented as a computer program product. By way of example, a computer program product may include computer-readable media within packaging materials. Those skilled in the art will recognize how best to implement the described functionality presented throughout this disclosure, depending on the specific applications and overall design constraints imposed on the overall system.

In some aspects of the disclosure, processor 1204 may include circuitry configured for various functions, including, for example, indication of a repetition factor for uplink control information. For example, the circuit may be configured to implement one or more of the functions described below in connection with the diagram.

In some aspects of the present disclosure, processor 1204 may be configured to, for example, a network core (e.g., a 5G core network), scheduled entities (e.g., UE), or, e.g., a local infrastructure or network. It may include communication and processing circuitry 1240 configured for various functions, including communicating with any other entity, such as a provider, an entity that communicates with scheduling entity 1200 over the Internet. In some examples, communications and processing circuitry 1240 may be used for wireless communications (e.g., receiving signals and/or transmitting signals) and signal processing (e.g., processing received signals and/or processing signals for transmission). It may also include one or more hardware components that provide a physical structure to perform related processes. For example, communications and processing circuitry 1240 may include one or more transmit/receive chains. Additionally, communications and processing circuitry 1240 receives and processes uplink traffic and uplink control messages (e.g., similar to uplink traffic 116 and uplink control 118 in Figure 1), (e.g. For example, it may be configured to transmit and process downlink traffic and downlink control messages (similar to downlink traffic 112 and downlink control 114). Communications and processing circuitry 1240 may further be configured to execute communications and processing software 1250 stored on computer-readable medium 1206 to implement one or more functions described herein.

In some implementations where the communication includes receiving information, the communication and processing circuitry 1240 may receive information from a component of the scheduling entity 1200 (e.g., via radio frequency signaling or other type of signaling suitable for the applicable communication medium). Information may be acquired (from the transceiver 1210 that receives information), the information may be processed (eg, decoded), and the processed information may be output. For example, communications and processing circuitry 1240 may output information to other components of processor 1204, memory 1205, or bus interface 1208. In some examples, communications and processing circuitry 1240 may receive one or more of signals, messages, other information, or any combination thereof. In some examples, communications and processing circuitry 1240 may receive information through one or more channels. In some examples, communications and processing circuitry 1240 may include functionality for means to receive. In some examples, communication and processing circuitry 1240 may include functionality for processing, including means for demodulating, means for decoding, and the like.

In some implementations where the communication involves transferring (e.g., transmitting) information, the communication and processing circuitry 1240 may transmit information (e.g., processor 1204, memory 1205, or bus interface (from other components of 1208), process information (e.g., modulate, encode, etc.), and output the processed information. For example, communication and processing circuitry 1240 may output information to transceiver 1210 (e.g., transmitting information via radio frequency signaling or other type of signaling suitable for the applicable communication medium). In some examples, communications and processing circuitry 1240 may transmit one or more of signals, messages, other information, or any combination thereof. In some examples, communications and processing circuitry 1240 may transmit information over one or more channels. In some examples, communications and processing circuitry 1240 may include functionality for means for transmitting (eg, means for transmitting). In some examples, communication and processing circuitry 1240 may include functionality for means for generating, including means for modulating, means for encoding, etc.

In some aspects of the disclosure, processor 1204 may include various functions as described herein, such as uplink control enhancement circuitry 1242 configured to enhance uplink control channel coverage. Uplink control enhancement circuitry 1242 may be configured to manage and provide configuration or control information for repetitions of uplink control information transmission (e.g., UCI/PUCCH transmission). In one aspect, uplink control enhancement circuitry 1242 in conjunction with communications and processing circuitry 1240 provides uplink control information (e.g., PUCCH), e.g., as described above with respect to FIGS. 6-8. It can be configured to explicitly indicate the repetition factor for. In one aspect, uplink control enhancement circuitry 1242 in conjunction with communications and processing circuitry 1240 provides uplink control information (e.g., PUCCH), e.g., as described above with respect to FIGS. 9 and 10. It can be configured to implicitly indicate the repetition factor for. In one aspect, uplink control enhancement circuitry 1242, in conjunction with communications and processing circuitry 1240, provides uplink control enhancement circuitry that may be interpreted differently depending on one or more PUCCH parameters, e.g., as described above with respect to FIG. 11. It may be configured to dynamically indicate a repetition factor for information (eg, PUCCH). Uplink control enhancement circuitry 1242 may further be configured to execute uplink control enhancement software 1252 stored on computer-readable medium 1206 to implement one or more functions described herein.

In one configuration, apparatus 1200 for wireless communication includes means for configuring, controlling, and receiving repetitions of uplink control information. In one aspect, the above-described means may be the processor 1204 shown in FIG. 12 configured to perform the functions described by the above-described means. In another aspect, the above-described means may be a circuit or any device configured to perform the functions recited by the above-described means.

Of course, in the above examples, the circuitry included in processor 1204 is provided by way of example only, and the instructions stored in computer-readable storage medium 1206, or FIGS. 1, 2, 4-6, and 9 and/or any other suitable device or means described herein in connection with, for example, FIGS. 6-8, 10 and/or 11, including but not limited to, any other suitable device or means described in any one of FIG. 10. Other means for performing the described functionality, utilizing processes and/or algorithms, may also be included within various aspects of the present disclosure.

13 is a flow chart illustrating an example process 1300 for receiving repetitions of an uplink control message in accordance with some aspects of the present disclosure. As described below, some or all illustrated features may be omitted in particular implementations within the scope of this disclosure, and some illustrated features may not be required for implementation of all examples. In some examples, process 1300 may be performed by base station 1200 shown in FIG. 12. In some examples, process 1300 may be performed by any suitable device or means that performs the function or algorithm described below.

At block 1302, a base station (e.g., gNB or scheduling entity) may send control information to the UE. For example, the control information may include an indication of a repetition factor (e.g., PUCCH repetition factor) that corresponds to the repetition count of an uplink control message from the UE (e.g., PUCCH repetition 612 or 920). In an aspect, uplink control enhancement circuitry 1242 may provide means for determining and providing control information. Control information allows the base station to explicitly or implicitly indicate the repetition factor to the UE. In one aspect, communications and processing circuitry 1240 (see FIG. 12) may provide a means for transmitting control information to the UE via transceiver 1210 and antenna array 1220.

In one aspect, the control information may include an explicit indication of a repetition factor for repeating the uplink control message. The explicit indication may indicate the actual number or count of repetitions. For example, the indication may include a bit string indicating the value of the PUCCH repetition factor or an index value for identifying the PUCCH repetition factor among a plurality of predefined PUCCH repetition factors (e.g., table 700). . In one example, an explicit indication of the PUCCH repetition factor may be carried in the DCI or MAC CE. In response to the control information, the UE may send repetition of the PUCCH transmission according to the PUCCH repetition factor to improve the coverage and/or quality of the PUCCH.

In one aspect, the control information may enable implicit indication of a repetition factor, for example for PUCCH. For example, the control information may provide a configuration indicating a correspondence between each of one or more transmission beams of a base station and one or more repetition factors of an uplink control message. In one example, the UE may determine or select a repetition factor based at least in part on a current or active transmit beam, TCI state, control beam, or other beam associated with the base station's active transmit beam. For example, the base station may transmit a configuration indicating the correspondence through higher layer signaling, RRC signaling, semi-persistent signaling, etc.

In some aspects, the control information may include a configuration indicating one or more rules (e.g., constraints) associated with one or more PUCCH parameters for dynamically determining the repetition factor. For example, the configuration may indicate one or more rules associated with PUCCH formats, UCI size, PUCCH resource sets, or code rates, among other examples. The UE may use the rules to dynamically determine the PUCCH repetition factor based on the rules and interpretation of the repetition indication according to one or more PUCCH parameters.

At block 1304, the base station may receive an uplink control message repeated according to a repetition count. For example, the base station may receive multiple PUCCH transmissions (uplink control messages) repeated according to the PUCCH repetition factor. In one aspect, communications and processing circuitry 1240 may provide means for receiving uplink control messages from a UE. In some aspects, a base station may receive repetitions of an uplink control message (e.g., two or more repetitions of a PUCCH transmission) using the same communication resources. In some aspects, a base station may receive different transmissions of repeated PUCCH transmissions using different communication resources.

FIG. 14 is a conceptual diagram illustrating an example hardware implementation for an example scheduled entity 1400 employing processing system 1414. According to various aspects of the disclosure, an element, or any portion of an element, or any combination of elements may be implemented with a processing system 1414 that includes one or more processors 1404. For example, scheduled entity 1400 may be a user equipment (UE) as shown in any one or more of FIGS. 1, 2, 4-6, 9, and/or 10.

Processing system 1414 may include a bus interface 1408, a bus 1402, a memory 1405, a processor 1404, and a computer-readable medium 1406. may be the same. Scheduled entity 1400 may also include a user interface 1412, transceiver 1410, and antenna array 1420 substantially similar to those described in FIG. 12. That is, as used in scheduling entity 1400, processor 1404 may be used to implement any one or more of the processes described below and illustrated in the figure.

In some aspects of the disclosure, processor 1404 may include communications and processing circuitry 1440 configured for various functions, including, for example, communicating with a base station (e.g., scheduling entity 1200). . In some examples, communications and processing circuitry 1440 may be used for wireless communications (e.g., receiving signals and/or transmitting signals) and signal processing (e.g., processing received signals and/or processing signals for transmission). It may also include one or more hardware components that provide a physical structure to perform related processes. For example, communications and processing circuitry 1440 may include one or more transmit/receive chains. Additionally, communications and processing circuitry 1440 transmits and processes uplink traffic and uplink control messages (e.g., similar to uplink traffic 116 and uplink control 118 in the figure), (e.g. , may be configured to receive and process downlink traffic and downlink control messages (similar to downlink traffic 112 and downlink control 114). Communications and processing circuitry 1440 may further be configured to execute communications and processing software 1450 stored on computer-readable medium 1406 to implement one or more functions described herein.

In some implementations where the communication includes receiving information, the communication and processing circuitry 1440 may receive information from a component of the scheduled entity 1400 (e.g., radio frequency signaling or other type of signaling suitable for the applicable communication medium). Information may be acquired (from the transceiver 1410 that receives information through), the information may be processed (eg, decoded), and the processed information may be output. For example, communication and processing circuitry 1440 may output information to other components of processor 1404, memory 1405, or bus interface 1408. In some examples, communications and processing circuitry 1440 may receive one or more of signals, messages, other information, or any combination thereof. In some examples, communications and processing circuitry 1440 may receive information through one or more channels. In some examples, communications and processing circuitry 1440 may include functionality for means to receive. In some examples, communication and processing circuitry 1440 may include functionality for processing, including means for demodulating, means for decoding, etc.

In some implementations where the communication involves transferring (e.g., transmitting) information, the communication and processing circuitry 1440 may transmit information (e.g., processor 1404, memory 1405, or bus interface (from other components of 1408), process information (e.g., modulate, encode, etc.), and output the processed information. For example, communication and processing circuitry 1440 may use antenna array 1420 to transmit information via radio frequency signaling or other type of signaling suitable for the applicable communication medium). Information can also be output. In some examples, communications and processing circuitry 1440 may transmit one or more of signals, messages, other information, or any combination thereof. In some examples, communications and processing circuitry 1440 may transmit information over one or more channels. In some examples, communications and processing circuitry 1440 may include functionality for means for transmitting (eg, means for transmitting). In some examples, communication and processing circuitry 1440 may include functionality for means for generating, including means for modulating, means for encoding, etc.

In some aspects of the disclosure, processor 1404 may include various functions as described herein, such as uplink control enhancement circuitry 1442 configured to enhance uplink control channel coverage. Uplink control enhancement circuitry 1442 may be configured to receive and process configuration or control information for repetitions of uplink control information transmission (e.g., UCI/PUCCH transmission). In one aspect, uplink control enhancement circuitry 1442, in conjunction with communications and processing circuitry 1440, may provide explicit communication for uplink control information (e.g., PUCCH), e.g., as described above with respect to intra-provincial guidance. It may be configured to determine the repetition factor indicated by . In one aspect, the uplink control enhancement circuitry 1442, in conjunction with the communications and processing circuitry 1440, may provide implicit communication for uplink control information (e.g., PUCCH), e.g., as described above with respect to Figures 144 and 1440. It may be configured to determine the repetition factor indicated by . In one aspect, uplink control enhancement circuitry 1442, in conjunction with communications and processing circuitry 1440, may be configured to provide a repetition factor for uplink control information (e.g., PUCCH), e.g., as described above with respect to Figures 1440 and 1440. Can be configured to dynamically determine. For example, uplink control enhancement circuitry 1442 may interpret the repetition factor indicator to determine a value of the repetition factor based on one or more rules associated with one or more PUCCH parameters. Uplink control enhancement circuitry 1442 may further be configured to execute uplink control enhancement software 1452 stored on computer-readable medium 1406 to implement one or more functions described herein.

In one configuration, an apparatus 1400 for wireless communication includes means for providing and transmitting repetitions of uplink control information. In one aspect, the above-described means may be the processor 1404 shown in the figure configured to perform the functions described by the above-described means. In another aspect, the above-described means may be a circuit or any device configured to perform the functions recited by the above-described means.

Of course, in the examples above, the circuitry included in processor 1404 is provided by way of example only, and the instructions stored in computer-readable storage medium 1406, or FIGS. 1, 2, 4, 5, and 6, are provided as examples only. , the processes and/or algorithms described herein in connection with, for example, FIGS. 6-11 , including but not limited to any other suitable device or means described in any of FIGS. 9 and/or 10 Utilizing , other means for performing the described functionality may be included within various aspects of the present disclosure.

FIG. 15 is a flow chart illustrating an example process 1500 for transmitting repetitions of an uplink control message for coverage enhancement in accordance with some aspects of the present disclosure. As described below, some or all illustrated features may be omitted in particular implementations within the scope of this disclosure, and some illustrated features may not be required for implementation of all examples. In some examples, process 1500 may be executed by scheduled entity 1400 shown in FIG. 14. In some examples, process 1500 may be performed by any suitable device or means that performs the function or algorithm described below.

At block 1502, the UE may receive control information from the base station. The control information may be used to determine a repetition factor (eg, PUCCH repetition factor), which indicates the repetition count of the uplink control message (eg, PUCCH repetition 612 or 920). In some aspects, the control information may explicitly indicate a repetition factor to the UE as described above with respect to maps. In some aspects, the control information may enable the UE to implicitly determine the repetition factor as described above with respect to degrees and degrees. In one aspect, communications and processing circuitry 1440 (see FIG. 14) may provide a means for receiving control information from a base station. In some aspects, the UE may receive control information via DCI, MAC CE, and/or RRC signaling.

At block 1504, the UE may determine the repetition factor based on the control information. The repetition factor may indicate a repetition count for transmitting repetitions of an uplink control message (e.g., PUCCH). In an aspect, uplink control enhancement circuitry 1442 may provide means for determining a repetition factor based on control information received from a base station. In one example, the control information may include an explicit indication of a repetition factor for repeating the uplink control message. The explicit notation can directly indicate the actual number of repetitions (e.g., counts). For example, the indication may be a bit string indicating the value of the PUCCH repetition factor or an index value for identifying the PUCCH repetition factor among a plurality of predefined PUCCH repetition factors (e.g., Table 700 in the figure). In one example, an explicit indication of the PUCCH repetition factor may be carried in the DCI or MAC CE.

In one aspect, the control information may enable implicit indication of a repetition factor for PUCCH transmission, for example. For example, the control information may provide a configuration indicating a correspondence between each of one or more transmission beams of a base station and one or more repetition factors of an uplink control message. In such cases, the UE may determine or select a repetition factor based at least in part on a current or active transmit beam, TCI state, active control beam, or beam associated with the base station's active beam. As an example, the UE may receive a configuration indicating a correspondence through higher layer signaling, RRC signaling, semi-persistent signaling, etc.

In some aspects, the control information may include a configuration indicating one or more rules (e.g., constraints) associated with one or more PUCCH parameters for dynamically determining the repetition factor. For example, the configuration may indicate one or more rules associated with PUCCH formats, UCI size, PUCCH resource sets, or code rates, among other examples. The UE may use rules to dynamically determine or interpret the PUCCH repetition factor indication, which may be explicitly or implicitly displayed by the base station as described herein. For example, the UE may interpret a specific value of the PUCCH repetition factor indication as a different repetition factor depending on the PUCCH format, UCI size, PUCCH resource set, or code rate in use.

At block 1506, the UE may transmit repetitions of the uplink control message depending on the repetition count or repetition factor. For example, the UE may transmit multiple PUCCH transmissions that are repeated according to the PUCCH repetition factor determined in block 1504. In one example, communications and processing circuitry 1440 may provide a means for transmitting repetitions of uplink control messages (e.g., PUCCH transmissions) to a base station. In some aspects, the UE may transmit repetitions of the uplink control message (eg, two or more repetitions of a PUCCH transmission) using the same communication resources. In some aspects, a UE may transmit different transmissions of repeated PUCCH transmissions using different communication resources.

A first aspect of the present disclosure provides a user equipment (UE) for wireless communication, the user equipment comprising: a communication interface for wireless communication; Memory; and a processor operatively coupled to the communication interface and the memory, wherein the processor and the memory: receive control information from a base station through the communication interface; determine a repetition factor representing a repetition count for transmitting repetitions of an uplink control message based on the control information; and transmit repetitions of the uplink control message to the base station through the communication interface according to the repetition count.

In a second aspect, alone or in combination with the first aspect, the control information includes: a plurality of predetermined repetition factors, a mid repetition factor; or a value representing at least one of the repetition factors related to the previous repetition factor.

In a third aspect, alone or in combination with any of the first to second aspects, the control information indicates a valid time interval of the repetition factor.

In a fourth aspect, alone or in combination with any of the first to second aspects, the processor and memory are further configured to: transmit a request for a repetition factor to the base station, wherein the request is in an uplink control message. It is configured to indicate the number of repetitions.

In a fifth aspect, alone or in combination with the first aspect, the control information indicates a correspondence between each of the one or more transmission beams of the base station and one or more repetition factors, and the processor and memory further, according to the correspondence, transmit the one or more transmission beams. and determine a repetition factor for transmitting an uplink control message based at least in part on an active transmission beam among the beams.

In a sixth aspect, alone or in combination with the fifth aspect, the processor and memory further include: transmitting a downlink shared channel associated with a feedback message included in an uplink control message; Active control beam of the base station; or determine an active transmission beam based on at least one of the transmission configuration indicator states for the downlink message.

In a seventh aspect, alone or in combination with any of the fifth to sixth aspects, the processor and memory further: receive, from a base station, an indication for overriding the correspondence between the repetition factor and the active transmit beam of the base station; and transmit a repetition of the uplink control message using an updated repetition factor based at least in part on the indication.

In an eighth aspect, alone or in combination with any of the first, second, fifth and sixth aspects, the processor and memory further determine physical uplink control channel (PUCCH) parameters; and configured to determine a repetition factor based on the PUCCH parameters and one or more rules associated with the parameters, where the PUCCH parameters include the PUCCH format, uplink control information (UCI) size, PUCCH resource set, or code rate ratio used by the base station. Also includes one.

A ninth aspect of the present disclosure provides a method of wireless communication in a user equipment (UE), the method comprising: receiving control information from a base station; determining a repetition factor representing a repetition count for transmitting repeated uplink control messages based on the control information; and transmitting a repetition of the uplink control message to the base station according to the repetition count.

In a tenth aspect, alone or in combination with the ninth aspect, control information includes: a plurality of predetermined repetition factors, a mid repetition factor; or a value representing at least one of the repetition factors related to the previous repetition factor.

In an eleventh aspect, alone or in combination with any of the ninth to tenth aspects, the control information indicates a valid time interval of the repetition factor.

In a twelfth aspect, alone or in combination with any of the ninth to tenth aspects, the method further comprises transmitting a request for a repetition factor to the base station, wherein the request is for repetitions of the uplink control message. It is constructed to represent numbers.

In a thirteenth aspect, alone or in combination with the ninth aspect, the control information indicates a correspondence between each of the one or more transmission beams of the base station and one or more repetition factors, and the method according to the correspondence comprises: an active transmission beam of the one or more transmission beams; and determining a repetition factor for transmitting the uplink control message based at least in part on .

In a fourteenth aspect, alone or in combination with the ninth aspect, a method includes transmitting a downlink shared channel associated with a feedback message included in an uplink control message; Active control beam of the base station; or determining an active transmission beam based on at least one of the transmission configuration indicator states for the downlink message.

In a fifteenth aspect, alone or in combination with any of the thirteenth to fourteenth aspects, a method includes receiving, from a base station, an indication for overriding the correspondence between a repetition factor and the active transmit beam of the base station; and transmitting a repetition of the uplink control message using an updated repetition factor based at least in part on the indication.

In a sixteenth aspect, alone or in combination with any of the ninth, tenth, thirteenth and fourteenth aspects, a method includes determining physical uplink control channel (PUCCH) parameters; and determining a repetition factor based on the parameter and one or more rules associated with the PUCCH parameter, where the PUCCH parameter is the PUCCH format, uplink control information (UCI) size, PUCCH resource set, or used by the base station. Contains at least one of the code rates.

A seventeenth aspect of the present disclosure provides a base station for wireless communication, wherein the base station includes a communication interface for wireless communication; Memory; and a processor operatively coupled to the communication interface and the memory, the processor and the memory configured to: transmit control information via the communication interface to a user equipment (UE), wherein the control information is transmitted via an uplink. transmit the control information, including an indication of a repetition factor corresponding to a repetition count of the control message; and configured to receive a repeated uplink control message according to a repetition count from the UE through the communication interface.

In an eighteenth aspect, alone or in combination with the seventeenth aspect, the control information includes: a plurality of predetermined repetition factors, a mid repetition factor; or a value representing at least one of the repetition factors related to the previous repetition factor.

In a nineteenth aspect, alone or in combination with any of the seventeenth to eighteenth aspects, the control information indicates a valid time interval of the repetition factor.

In a twentieth aspect, alone or in combination with any of the seventeenth to eighteenth aspects, the processor and memory are further configured to: receive a request for a repetition factor from the UE, wherein the request is in the uplink control message. It is configured to indicate the number of repetitions.

In a twenty-first aspect, alone or in combination with the seventeenth aspect, the control information indicates a correspondence between each of the one or more transmit beams of the base station and one or more repetition factors, and the processor and memory further determine the active transmit beam of the one or more transmit beams. and receive repetitions of the update control message according to a repetition factor determined based at least in part.

In a twenty-second aspect, alone or in combination with the twenty-first aspect, the processor and memory further: transmit, to a UE, an indication for overriding the correspondence between the repetition factor and the active transmit beam of the base station; and receive a repetition of the uplink control message using an updated repetition factor based at least in part on the indication.

In a twenty-third aspect, alone or in combination with any of the seventeenth, eighteenth, twenty-first, and twenty-second aspects, the control information is based at least in part on a physical uplink control channel (PUCCH) parameter. and one or more rules for determining a factor, wherein the PUCCH parameter includes at least one of a PUCCH format, an uplink control information (UCI) size, a PUCCH resource set, or a code rate used by the base station.

A twenty-fourth aspect of the present disclosure provides a method for wireless communication in a base station, the method comprising transmitting control information to a user equipment (UE), wherein the control information corresponds to a repetition count of an uplink control message. transmitting the control information, including an indication of a repetition factor; and receiving the uplink control message repeated according to the repetition count from the UE.

In a twenty-fifth aspect, alone or in combination with the twenty-fourth aspect, the control information includes: a plurality of predetermined repetition factors, a mid repetition factor; or a value representing at least one of the repetition factors related to the previous repetition factor.

In a twenty-sixth aspect, alone or in combination with any of the twenty-fourth to twenty-fifth aspects, the control information indicates a valid time interval of the repetition factor.

In a twenty-seventh aspect, alone or in combination with any of the twenty-fourth to twenty-fifth aspects, the method further comprises receiving a request from the UE for a repetition factor, wherein the request is for repetitions of the uplink control message. It is constructed to represent numbers.

In a twenty-eighth aspect, alone or in combination with the twenty-fourth aspect, the control information represents a correspondence between one or more repetition factors and each of one or more transmit beams of a base station, wherein the method is based at least in part on an active transmit beam of the one or more transmit beams. It further includes receiving repetitions of the update control message according to the determined repetition factor.

In a twenty-ninth aspect, alone or in combination with the twenty-eighth aspect, a method comprises: transmitting, to a UE, an indication for overriding the correspondence between the repetition factor and the active transmit beam of the base station; and receiving a repetition of the uplink control message using an updated repetition factor based at least in part on the indication.

In a thirtieth aspect, alone or in combination with any of the twenty-fourth, twenty-fifth, twenty-eighth, and twenty-ninth aspects, the control information is based at least in part on a physical uplink control channel (PUCCH) parameter. and one or more rules for determining a factor, wherein the PUCCH parameter includes at least one of a PUCCH format, an uplink control information (UCI) size, a PUCCH resource set, or a code rate used by the base station.

Several aspects of a wireless communications network have been presented with reference to an example implementation. As those skilled in the art will readily appreciate, the various aspects described throughout this disclosure may be extended to other telecommunication systems, network architectures and communication standards.

By way of example, various aspects may be incorporated into other systems defined by 3GPP, such as Long Term Evolution (LTE), Evolved Packet System (EPS), Universal Mobile Telecommunications System (UMTS), and/or Global System for Mobile (GSM). It may also be implemented in . The various aspects may also be extended to systems defined by 3rd Generation Partnership Project 2 (3GPP2), such as CDMA2000 and/or Evolution-Data Optimized (EV-DO). Other examples may be implemented within systems employing IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, ultra-wideband (UWB), Bluetooth, and/or other suitable systems. The actual telecommunications standard, network architecture, and/or communications standard employed will depend on the particular application and overall design constraints imposed on the system.

Within this disclosure, the word “exemplary” is used to mean “serving as an example, instance, or illustration.” Any implementation or aspect described herein as “exemplary” is not necessarily applicable to other aspects of the disclosure. It need not be construed as advantageous or preferable over another. Similarly, the term "aspects" does not require that all aspects of the present disclosure include the discussed feature, advantage or mode of operation. The term "coupled" is used herein. is used to refer to a direct or indirect coupling between two objects. For example, if object A physically touches object B, and object B touches object C, then objects A and They may be considered coupled to each other even when they are not in direct physical contact, for example, they may be coupled to an object in a package even though the object is never in direct physical contact with the object. The terms “circuit” and “circuit” are used broadly and refer to hardware implementations of electronic devices and conductors that, when connected and configured, enable performance of the functions described in this disclosure, without limitation as to the type of electronic circuits. Rather, it is intended to include both software implementations of information and instructions that, when executed by a processor, enable performance of the functions described in this disclosure.

One or more of the components, steps, features and/or functions shown in FIGS. 1 to 15 may be rearranged and/or combined into a single component, step, feature or function, or may be divided into several components, steps, etc. It may be implemented as functions, or as functions. Additional elements, components, steps, and/or functions may also be added without departing from the novel features disclosed herein. Apparatus, devices, and/or components illustrated in the figures may be configured to perform one or more of the methods, features, or steps described herein. The novel algorithms described herein may also be efficiently implemented in software and/or embedded in hardware.

It should be understood that the specific order or hierarchy of steps in the disclosed methods is one example of exemplary processes. It is understood that the specific order or hierarchy of steps in the methods may be rearranged based on design preferences. The accompanying method claims present elements of the various steps in a sample order and are not limited to the specific order or rank presented unless specifically recited herein.

The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Accordingly, the claims are not intended to be limited to the aspects set forth herein, but should be given sufficient scope consistent with the language of the claims, wherein references to elements in the singular include "one or" unless explicitly stated otherwise. It is not intended to mean “just one” but rather “one or more.” Unless explicitly stated otherwise, the term “some” refers to one or more. A phrase referring to “at least one of” a list of items refers to any combination of those items, including single members. As an example, “at least one of a, b, or c” means b; c; a and a and b and and a, b and are intended to cover. All structural and functional equivalents to elements of the various aspects described throughout this disclosure, whether known or later known to those skilled in the art, are intended to be expressly incorporated herein by reference and encompassed by the claims. Furthermore, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. Unless any claim element is expressly stated using the phrase “means of doing,” or, in the case of a method claim, unless that element is stated using the phrase “steps of doing,” it shall not be construed under the provisions of 35 U.S.C.≪112(f). It shouldn't be.

Claims (30)

As a user equipment (UE) for wireless communication,
Communication interface for wireless communication;
Memory; and
comprising a processor operably coupled to the communication interface and the memory,
The processor and the memory,
receive control information from a base station through the communication interface;
determining a repetition factor based on the control information, wherein the repetition factor indicates a repetition count for transmitting repetitions of an uplink control message; and
transmit repetitions of the uplink control message according to the repetition count to the base station via the communication interface.
Consisting of user equipment (UE) for wireless communications. According to claim 1,
The control information is,
the repetition factor among a plurality of predetermined repetition factors; or
Said repetition factor relative to the previous repetition factor
A user equipment (UE) for wireless communications, including a value representing at least one of: According to claim 1,
A user equipment (UE) for wireless communications, wherein the control information indicates a valid time interval of the repetition factor. According to claim 1,
The processor and the memory are further configured to transmit a request for the repetition factor to the base station, wherein the request is configured to indicate a number of repetitions of the uplink control message. . According to claim 1,
The control information indicates a correspondence between each of one or more transmission beams of the base station and one or more repetition factors,
The processor and the memory are further configured to determine the repetition factor for transmitting the uplink control message based at least in part on an active one of the one or more transmit beams according to the correspondence. User equipment (UE) for. According to claim 5,
The processor and the memory also include:
downlink shared channel transmission associated with a feedback message included in the uplink control message;
an active control beam of the base station; or
Sending configuration indicator status for downlink messages
A user equipment (UE) for wireless communications, wherein the user equipment (UE) is configured to determine the active transmit beam based on at least one of: According to claim 5,
The processor and the memory also include:
receive, from the base station, an indication for overriding the correspondence between the repetition factor and the active transmit beam of the base station; and
transmit the repetitions of the uplink control message using an updated repetition factor based at least in part on the indication.
Consisting of user equipment (UE) for wireless communications. According to claim 1,
The processor and the memory also include:
determine physical uplink control channel (PUCCH) parameters; and
Determining the repetition factor based on the PUCCH parameter and one or more rules associated with the PUCCH parameter, wherein the PUCCH parameter is a PUCCH format, uplink control information (UCI) size, PUCCH resource set, or used by the base station. to determine the repetition factor, including at least one of the code rates:
Consisting of user equipment (UE) for wireless communications. A method of wireless communication in user equipment (UE), comprising:
Receiving control information from a base station;
determining a repetition factor based on the control information, wherein the repetition factor represents a repetition count for transmitting repetitions of an uplink control message; and
The method of wireless communication in a user equipment (UE) further comprising transmitting repetitions of the uplink control message to the base station according to the repetition count. According to clause 9,
The control information is,
the repetition factor among a plurality of predetermined repetition factors; or
Said repetition factor relative to the previous repetition factor
A method of wireless communication in a user equipment (UE), comprising a value representing at least one of the following: According to clause 9,
wherein the control information indicates a valid time interval of the repetition factor. According to clause 9,
Further comprising transmitting a request for the repetition factor to the base station,
wherein the request is configured to indicate a number of repetitions of the uplink control message. According to clause 9,
The control information indicates a correspondence between each of one or more transmission beams of the base station and one or more repetition factors,
According to the correspondence, determining the repetition factor for transmitting the uplink control message based at least in part on an active one of the one or more transmit beams. Method of communication. According to claim 13,
A method of wireless communication in a user equipment (UE), further comprising determining the active transmit beam based on at least one of the following:
downlink shared channel transmission associated with a feedback message included in the uplink control message;
an active control beam of the base station; or
Transmission configuration indicator status for downlink messages. According to claim 13,
receiving, from the base station, an indication for overriding the correspondence between the repetition factor and the active transmit beam of the base station; and
Transmitting the repetitions of the uplink control message using an updated repetition factor based at least in part on the indication. According to clause 9,
determining physical uplink control channel (PUCCH) parameters; and
determining the repetition factor based on the PUCCH parameter and one or more rules associated with the PUCCH parameter, wherein the PUCCH parameter is determined by a PUCCH format, an uplink control information (UCI) size, a PUCCH resource set, or by the base station. A method of wireless communication in a user equipment (UE), further comprising determining the repetition factor, including at least one of the code rates used. As a base station for wireless communication,
Communication interface for wireless communication;
Memory; and
comprising a processor operably coupled to the communication interface and the memory,
The processor and the memory,
transmit, to a user equipment (UE), control information via the communication interface, the control information comprising an indication of a repetition factor corresponding to a repetition count of an uplink control message; and
A base station for wireless communication, configured to receive the uplink control message repeated according to the repetition count from the UE through the communication interface. According to claim 17,
The control information is,
the repetition factor among a plurality of predetermined repetition factors; or
Said repetition factor relative to the previous repetition factor
A base station for wireless communication, including a value representing at least one of the following. According to claim 17,
A base station for wireless communication, wherein the control information indicates a valid time interval of the repetition factor. According to claim 17,
The processor and the memory are further configured to receive, from the UE, a request for the repetition factor, wherein the request is configured to indicate a number of repetitions of the uplink control message. According to claim 17,
The control information indicates a correspondence between each of one or more transmission beams of the base station and one or more repetition factors,
wherein the processor and the memory are further configured to receive repetitions of the uplink control message according to the repetition factor determined based at least in part on an active one of the one or more transmit beams. According to claim 21,
The processor and the memory also include:
transmit, to the UE, an indication for overriding the correspondence between the repetition factor and the active transmit beam of the base station; and
and receive the repetitions of the uplink control message using an updated repetition factor based at least in part on the indication. According to claim 17,
The control information includes one or more rules for determining the repetition factor based at least in part on a physical uplink control channel (PUCCH) parameter, wherein the PUCCH parameter includes a PUCCH format, an uplink control information (UCI) size, a PUCCH A base station for wireless communication, comprising at least one of a set of resources, or a code rate used by the base station. A method for wireless communication in a base station, comprising:
transmitting control information to a user equipment (UE), the control information comprising an indication of a repetition factor corresponding to a repetition count of an uplink control message; and
A method for wireless communication in a base station, comprising receiving the uplink control message repeated according to the repetition count from the UE. According to claim 24,
The control information is,
the repetition factor among a plurality of predetermined repetition factors; or
Said repetition factor relative to the previous repetition factor
A method for wireless communication in a base station, comprising a value representing at least one of According to claim 24,
The method of claim 1, wherein the control information indicates a valid time interval of the repetition factor. According to claim 24,
Further comprising receiving, from the UE, a request for the repetition factor,
wherein the request is configured to indicate a number of repetitions of the uplink control message. According to claim 24,
The control information indicates a correspondence between each of one or more transmission beams of the base station and one or more repetition factors,
Receiving repetitions of the uplink control message according to the repetition factor determined based at least in part on an active one of the one or more transmit beams. According to clause 28,
transmitting, to the UE, an indication for overriding the correspondence between the repetition factor and the active transmit beam of the base station; and
Receiving the repetitions of the uplink control message using an updated repetition factor based at least in part on the indication. According to claim 24,
The control information includes one or more rules for determining the repetition factor based at least in part on a physical uplink control channel (PUCCH) parameter, wherein the PUCCH parameter includes a PUCCH format, an uplink control information (UCI) size, a PUCCH A method for wireless communication at a base station, comprising at least one of a set of resources, or a code rate used by the base station.