WO2022246468A1 - Multiplexage d'informations de commande de liaison montante haute priorité et basse priorité (uci) sur une transmission en liaison montante - Google Patents

Multiplexage d'informations de commande de liaison montante haute priorité et basse priorité (uci) sur une transmission en liaison montante Download PDF

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Publication number
WO2022246468A1
WO2022246468A1 PCT/US2022/072472 US2022072472W WO2022246468A1 WO 2022246468 A1 WO2022246468 A1 WO 2022246468A1 US 2022072472 W US2022072472 W US 2022072472W WO 2022246468 A1 WO2022246468 A1 WO 2022246468A1
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WIPO (PCT)
Prior art keywords
uci
uci payload
payload
multiplexed
compression
Prior art date
Application number
PCT/US2022/072472
Other languages
English (en)
Inventor
Wei Yang
Wanshi Chen
Yi Huang
Peter Gaal
Original Assignee
Qualcomm Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US17/664,088 external-priority patent/US20220377723A1/en
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to EP22734455.3A priority Critical patent/EP4342225A1/fr
Priority to CN202280035003.1A priority patent/CN117337596A/zh
Publication of WO2022246468A1 publication Critical patent/WO2022246468A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/566—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient
    • H04W72/569—Allocation or scheduling criteria for wireless resources based on priority criteria of the information or information source or recipient of the traffic information

Definitions

  • aspects of the present disclosure relate generally to wireless communication systems, and more particularly, to managing compression of low-priority uplink control information (UCI) multiplexed with high-priority UCI.
  • UCI uplink control information
  • Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, and the like. These wireless networks may be multiple-access networks capable of supporting multiple users by sharing the available network resources. Such networks may be multiple access networks that support communications for multiple users by sharing the available network resources.
  • a wireless communication network may include several components. These components may include wireless communication devices, such as base stations (or node Bs) that may support communication for a number of user equipments (UEs).
  • UE user equipments
  • a UE may communicate with a base station via downlink and uplink.
  • the downlink (or forward link) refers to the communication link from the base station to the UE
  • the uplink (or reverse link) refers to the communication link from the UE to the base station.
  • a base station may transmit data and control information on a downlink to a UE or may receive data and control information on an uplink from the UE.
  • a transmission from the base station may encounter interference due to transmissions from neighbor base stations or from other wireless radio frequency (RF) transmitters.
  • RF radio frequency
  • a transmission from the UE may encounter interference from uplink transmissions of other UEs communicating with the neighbor base stations or from other wireless RF transmitters. This interference may degrade performance on both the downlink and uplink.
  • a method of wireless communication performed by a user equipment includes determining a compression indication for a low-priority (LP) uplink control information (UCI) payload to be multiplexed with a high-priority (HP) UCI payload, encoding the compression indication for the LP UCI payload jointly with the HP UCI payload, encoding the LP UCI payload separately from the jointly-encoded compression indication and HP UCI payload, and multiplexing the encoded LP UCI payload and the jointly-encoded compression indication and HP UCI payload in an uplink transmission to a base station.
  • LP low-priority
  • HP high-priority
  • a method of wireless communication performed by a base station includes receiving, from a UE, a multiplexed uplink transmission that includes a multiplex of an encoded LP UCI payload and an HP UCI payload jointly- encoded with a compression indication for the LP UCI payload, decoding the jointly- encoded HP UCI payload and compression indication to obtain the HP UCI payload and the compression indication, and decoding, based on the compression indication, the LP UCI payload.
  • a method of wireless communication performed by a UE includes determining to multiplex an HP UCI message having a first size and an LP UCI message having a second size for a multiplexed physical uplink control channel (PUCCH) transmission, mapping the HP UCI message to a first set of resource blocks (RBs) to be used for transmitting the HP UCI message of the multiplexed PUCCH transmission, and the LP UCI message to a second set of RBs to be used for transmitting the LP UCI message of the multiplexed PUCCH transmission.
  • the second set of RBs is non-overlapping with the first set of RBs.
  • the method further includes generating a first demodulation reference signal (DMRS) to be used for transmitting the first set of RBs, and a second DMRS to be used for transmitting the second set of RBs.
  • DMRS demodulation reference signal
  • a UE includes at least one processor and a memory coupled to the at least one processor.
  • the at least one processor stores processor- readable code that, when executed by the at least one processor, is configured to perform operations including determining a compression indication for an LP UCI payload to be multiplexed with an HP UCI payload, encoding the compression indication for the LP UCI payload jointly with the HP UCI payload, encoding the LP UCI payload separately from the jointly-encoded compression indication and HP UCI payload, and multiplexing the encoded LP UCI payload and the jointly-encoded compression indication and HP UCI payload in an uplink transmission to a base station.
  • a base station includes at least one processor and a memory coupled to the at least one processor.
  • the at least one processor stores processor-readable code that, when executed by the at least one processor, is configured to perform operations including receiving, from a UE, a multiplexed uplink transmission that includes a multiplex of an encoded LP UCI payload and an HP UCI payload jointly- encoded with a compression indication for the LP UCI payload, decoding the jointly- encoded HP UCI payload and compression indication to obtain the HP UCI payload and the compression indication, and decoding, based on the compression indication, the LP UCI payload.
  • a UE includes at least one processor and a memory coupled to the at least one processor.
  • the at least one processor stores processor- readable code that, when executed by the at least one processor, is configured to perform operations including determining to multiplex an HP UCI message having a first size and an LP UCI message having a second size for a multiplexed PUCCH transmission, mapping the HP UCI message to a first set of RBs to be used for transmitting the HP UCI message of the multiplexed PUCCH transmission, and the LP UCI message to a second set of RBs to be used for transmitting the LP UCI message of the multiplexed PUCCH transmission.
  • the second set of RBs is non-overlapping with the first set of RBs.
  • the operations further include generating a first DMRS to be used for transmitting the first set of RBs, and a second DMRS to be used for transmitting the second set of RBs.
  • a non-transitory computer-readable medium stores instructions that, when executed by a processor, cause the processor to perform operations.
  • the operations include determining, by a UE, a compression indication for an LP UCI payload to be multiplexed with an HP UCI payload, encoding the compression indication for the LP UCI payload jointly with the HP UCI payload, encoding the LP UCI payload separately from the jointly-encoded compression indication and HP UCI payload, and multiplexing the encoded LP UCI payload and the jointly-encoded compression indication and HP UCI payload in an uplink transmission to a base station.
  • a non-transitory computer-readable medium stores instructions that, when executed by a processor, cause the processor to perform operations.
  • the operations include receiving, by a base station from a UE, a multiplexed uplink transmission that includes a multiplex of an encoded LP UCI payload and an HP UCI payload jointly-encoded with a compression indication for the LP UCI payload, decoding the jointly-encoded HP UCI payload and compression indication to obtain the HP UCI payload and the compression indication, and decoding, based on the compression indication, the LP UCI payload.
  • a non-transitory computer-readable medium stores instructions that, when executed by a processor, cause the processor to perform operations.
  • the operations include determining, by a UE, to multiplex an HP UCI message having a first size and an LP UCI message having a second size for a multiplexed PUCCH transmission, mapping the HP UCI message to a first set of RBs to be used for transmitting the HP UCI message of the multiplexed PUCCH transmission, and the LP UCI message to a second set of RBs to be used for transmitting the LP UCI message of the multiplexed PUCCH transmission.
  • the second set of RBs is non overlapping with the first set of RBs.
  • an apparatus includes means for determining, by a UE, a compression indication for an LP UCI payload to be multiplexed with an HP UCI payload, means for encoding the compression indication for the LP UCI payload jointly with the HP UCI payload, means for encoding the LP UCI payload separately from the jointly-encoded compression indication and HP UCI payload, and means for multiplexing the encoded LP UCI payload and the jointly-encoded compression indication and HP UCI payload in an uplink transmission to a base station.
  • an apparatus includes means for receiving, by a base station from a UE, a multiplexed uplink transmission that includes a multiplex of an encoded LP UCI payload and an HP UCI payload jointly-encoded with a compression indication for the LP UCI payload, means for decoding the jointly-encoded HP UCI payload and compression indication to obtain the HP UCI payload and the compression indication, and means for decoding, based on the compression indication, the LP UCI payload.
  • an apparatus includes means for determining to multiplex an HP UCI message having a first size and an LP UCI message having a second size for a multiplexed PUCCH transmission, and means for mapping the HP UCI message to a first set of RBs to be used for transmitting the HP UCI message of the multiplexed PUCCH transmission, and the LP UCI message to a second set of RBs to be used for transmitting the LP UCI message of the multiplexed PUCCH transmission.
  • the second set of RBs is non-overlapping with the first set of RBs.
  • the apparatus further includes means for generating a first DMRS to be used for transmitting the first set of RBs, and a second DMRS to be used for transmitting the second set of RBs.
  • Implementations may range in spectrum from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregate, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more aspects of the described innovations.
  • devices incorporating described aspects and features may also necessarily include additional components and features for implementation and practice of claimed and described aspects.
  • transmission and reception of wireless signals necessarily includes a number of components for analog and digital purposes (e.g., hardware components including antenna, radio frequency (RF)-chains, power amplifiers, modulators, buffer, processor(s), interleaver, adders/summers, etc.).
  • RF radio frequency
  • innovations described herein may be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, end-user devices, etc. of varying sizes, shapes, and constitution.
  • FIG. 1 is a block diagram illustrating details of an example wireless communication system according to one or more aspects.
  • FIG. 2 is a block diagram illustrating examples of a base station and a user equipment (UE) according to one or more aspects.
  • FIG. 3 is a block diagram illustrating an example wireless communication system that supports managing compression and compression indications of a low-priority uplink control information (UCI) message that is multiplexed with a high-priority UCI message according to one or more aspects.
  • UCI uplink control information
  • FIG. 4 is a block diagram illustrating an example wireless communication system that supports non-overlapping resource block allocation and priority-specific demodulation reference signal (DMRS) assignment for multiplexed UCI messages of different priorities according to one or more aspects.
  • DMRS demodulation reference signal
  • FIG. 5 is a flow diagram illustrating an example process that supports managing compression and compression indications of a low-priority UCI message that is multiplexed with a high-priority UCI message according to one or more aspects.
  • FIG. 6 is a flow diagram illustrating an example process that supports managing compression and compression indications of a low-priority UCI message that is multiplexed with a high-priority UCI message according to one or more aspects.
  • FIG. 7 is a flow diagram illustrating an example process that supports non-overlapping resource block allocation and priority-specific DMRS assignment for multiplexed UCI messages of different priorities according to one or more aspects.
  • FIG. 8 is a block diagram of an example UE that supports managing compression and compression indications of a low-priority UCI message that is multiplexed with a high- priority UCI message according to one or more aspects.
  • FIG. 9 is a block diagram of an example base station that supports managing compression and compression indications of a low-priority UCI message that is multiplexed with a high-priority UCI message according to one or more aspects.
  • Various aspects of the present disclosure relate to techniques that provide a mechanism for managing compression and compression indications of a low-priority (LP) uplink control information (UCI) message that is multiplexed with a high-priority (HP) UCI message in a wireless communication system.
  • a UE may be configured or scheduled to multiplex an HP UCI message and an LP UCI message for a multiplexed uplink (e.g., a physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH)) transmission.
  • a multiplexed uplink e.g., a physical uplink control channel (PUCCH) or physical uplink shared channel (PUSCH)
  • the UE may determine a compression indication for the LP UCI message, which may include determining to reduce the size of the LP UCI message to be multiplexed with the HP UCI message.
  • determining the compression indication for the LP UCI message may include the UE determining whether to reduce the size of the LP UCI message before multiplexing, and/or determining a manner for reducing the size of the size of the LP UCI message.
  • reducing the size of the LP UCI message may include compressing, partially dropping, and/or bundling the LP UCI message.
  • the UE may encode the compression indication jointly with the HP UCI message.
  • the LP UCI message may then be encoded separately from the jointly-encoded compression indication and HP UCI message.
  • the reduction of the size of the LP UCI message may be performed prior to the encoding of the LP UCI message.
  • the separately encoded LP UCI message and the jointly-encoded compression indication and HP UCI message may be multiplexed for the multiplexed uplink transmission, which may be transmitted to the base station.
  • the base station may then decode the jointly-encoded compression indication and HP UCI message to obtain the compression indication for the LP UCI message.
  • the base station may then decode the LP UCI message (if appropriate) based on the compression indication.
  • a UE may be configured or scheduled to multiplex an HP UCI message and an LP UCI message for a multiplexed uplink (e.g., PUCCH or PUSCH) transmission.
  • the UE may be configured to map the HP UCI message to a first set of resource blocks (RBs) and the LP UCI message to a second set of RBs.
  • RBs resource blocks
  • the first set of RBs and the second set of RBs may be non-overlapping and/or may be different.
  • the size of the first set of RBs (e.g., the number of RBs in the first set) may be based on the size of the HP UCI message and a corresponding coding rate.
  • the UE may be configured to generate a first demodulation reference signal (DMRS) for the first set of RBs based on the number of RBs in the first set of RBs, and a second DMRS for the second set of RBs based on the number of RBs in the second set of RBs.
  • DMRS demodulation reference signal
  • the UE may transmit the multiplexed uplink transmission by transmitting the HP UCI message over the first set of RBs and the LP UCI message over the second set of RBs.
  • This disclosure relates generally to providing or participating in authorized shared access between two or more wireless devices in one or more wireless communications systems, also referred to as wireless communications networks.
  • the techniques and apparatus may be used for wireless communication networks such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single-carrier FDMA (SC-FDMA) networks, LTE networks, GSM networks, 5 th Generation (5G) or new radio (NR) networks (sometimes referred to as “5G NR” networks, systems, or devices), as well as other communications networks.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal FDMA
  • SC-FDMA single-carrier FDMA
  • LTE long-term evolution
  • GSM Global System for Mobile communications
  • 5G 5 th Generation
  • NR new radio
  • a CDMA network may implement a radio technology such as universal terrestrial radio access (UTRA), cdma2000, and the like.
  • UTRA includes wideband- CDMA (W-CDMA) and low chip rate (LCR).
  • CDMA2000 covers IS-2000, IS-95, and IS-856 standards.
  • a TDMA network may, for example implement a radio technology such as Global System for Mobile Communication (GSM).
  • GSM Global System for Mobile Communication
  • 3GPP 3rd Generation Partnership Project
  • GERAN is the radio component of GSM/EDGE, together with the network that joins the base stations (for example, the Ater and Abis interfaces) and the base station controllers (A interfaces, etc.).
  • the radio access network represents a component of a GSM network, through which phone calls and packet data are routed from and to the public switched telephone network (PSTN) and Internet to and from subscriber handsets, also known as user terminals or user equipments (UEs).
  • PSTN public switched telephone network
  • UEs subscriber handsets
  • a mobile phone operator's network may comprise one or more GERANs, which may be coupled with UTRANs in the case of a UMTS/GSM network. Additionally, an operator network may also include one or more LTE networks, or one or more other networks. The various different network types may use different radio access technologies (RATs) and RANs.
  • RATs radio access technologies
  • An OFDMA network may implement a radio technology such as evolved UTRA (E- UTRA), Institute of Electrical and Electronics Engineers (IEEE) 802.11, IEEE 802.16, IEEE 802.20, flash-OFDM and the like.
  • E- UTRA evolved UTRA
  • IEEE Institute of Electrical and Electronics Engineers
  • GSM Global System for Mobile communications
  • LTE long term evolution
  • UTRA, E-UTRA, GSM, UMTS and LTE are described in documents provided from an organization named “3rd Generation Partnership Project” (3 GPP), and cdma2000 is described in documents from an organization named “3rd Generation Partnership Project 2” (3GPP2).
  • the 3GPP is a collaboration between groups of telecommunications associations that aims to define a globally applicable third generation (3G) mobile phone specification.
  • 3GPP LTE is a 3 GPP project which was aimed at improving UMTS mobile phone standard.
  • the 3 GPP may define specifications for the next generation of mobile networks, mobile systems, and mobile devices.
  • the present disclosure may describe certain aspects with reference to LTE, 4G, or 5G NR technologies; however, the description is not intended to be limited to a specific technology or application, and one or more aspects described with reference to one technology may be understood to be applicable to another technology. Additionally, one or more aspects of the present disclosure may be related to shared access to wireless spectrum between networks using different radio access technologies or radio air interfaces.
  • 5G networks contemplate diverse deployments, diverse spectrum, and diverse services and devices that may be implemented using an OFDM-based unified, air interface. To achieve these goals, further enhancements to LTE and LTE-A are considered in addition to development of the new radio technology for 5G NR networks.
  • the 5G NR will be capable of scaling to provide coverage (1) to a massive Internet of things (IoTs) with an ultra-high density (e.g., ⁇ 1 M nodes/km ), ultra-low complexity (e.g., ⁇ 10 s of bits/sec), ultra-low energy (e.g., -10+ years of battery life), and deep coverage with the capability to reach challenging locations; (2) including mission-critical control with strong security to safeguard sensitive personal, financial, or classified information, ultra-high reliability (e.g., -99.9999% reliability), ultra-low latency (e.g., - 1 millisecond (ms)), and users with wide ranges of mobility or lack thereof; and (3) with enhanced mobile broadband including extreme high capacity (e.g., ⁇ 10 Tbps/km ), extreme data rates (e.g., multi - Gbps rate, 100+ Mbps user experienced rates), and deep awareness with advanced discovery and optimizations.
  • IoTs Internet of things
  • ultra-high density e.g., ⁇ 1 M nodes
  • Devices, networks, and systems may be configured to communicate via one or more portions of the electromagnetic spectrum.
  • the electromagnetic spectrum is often subdivided, based on frequency or wavelength, into various classes, bands, channels, etc.
  • two initial operating bands have been identified as frequency range designations FR1 (410 MHz - 7.125 GHz) and FR2 (24.25 GHz - 52.6 GHz).
  • the frequencies between FR1 and FR2 are often referred to as mid-band frequencies.
  • FR1 is often referred to (interchangeably) as a “sub-6 GHz” band in various documents and articles.
  • FR2 which is often referred to (interchangeably) as a “millimeter wave” (mmWave) band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz - 300 GHz) which is identified by the International Telecommunications Union (ITU) as a “mmWave” band.
  • EHF extremely high frequency
  • sub-6 GHz or the like if used herein may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies.
  • mmWave or the like if used herein may broadly represent frequencies that may include mid-band frequencies, may be within FR2, or may be within the EHF band.
  • 5G NR devices, networks, and systems may be implemented to use optimized OFDM- based waveform features. These features may include scalable numerology and transmission time intervals (TTIs); a common, flexible framework to efficiently multiplex services and features with a dynamic, low-latency time division duplex (TDD) design or frequency division duplex (FDD) design; and advanced wireless technologies, such as massive multiple input, multiple output (MIMO), robust mmWave transmissions, advanced channel coding, and device-centric mobility. Scalability of the numerology in 5G NR, with scaling of subcarrier spacing, may efficiently address operating diverse services across diverse spectrum and diverse deployments.
  • TTIs transmission time intervals
  • TDD dynamic, low-latency time division duplex
  • FDD frequency division duplex
  • MIMO massive multiple input, multiple output
  • Scalability of the numerology in 5G NR with scaling of subcarrier spacing, may efficiently address operating diverse services across diverse spectrum and diverse deployments.
  • subcarrier spacing may occur with 15 kHz, for example over 1, 5, 10, 20 MHz, and the like bandwidth.
  • subcarrier spacing may occur with 30 kHz over 80/100 MHz bandwidth.
  • the subcarrier spacing may occur with 60 kHz over a 160 MHz bandwidth.
  • subcarrier spacing may occur with 120 kHz over a 500 MHz bandwidth.
  • the scalable numerology of 5G NR facilitates scalable TTI for diverse latency and quality of service (QoS) requirements. For example, shorter TTI may be used for low latency and high reliability, while longer TTI may be used for higher spectral efficiency.
  • QoS quality of service
  • 5G NR also contemplates a self-contained integrated subframe design with uplink or downlink scheduling information, data, and acknowledgement in the same subframe.
  • the self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, adaptive uplink or downlink that may be flexibly configured on a per-cell basis to dynamically switch between uplink and downlink to meet the current traffic needs.
  • wireless communication networks adapted according to the concepts herein may operate with any combination of licensed or unlicensed spectrum depending on loading and availability. Accordingly, it will be apparent to a person having ordinary skill in the art that the systems, apparatus and methods described herein may be applied to other communications systems and applications than the particular examples provided.
  • Implementations may range from chip-level or modular components to non- modular, non-chip-level implementations and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more described aspects.
  • OEM original equipment manufacturer
  • devices incorporating described aspects and features may also necessarily include additional components and features for implementation and practice of claimed and described aspects. It is intended that innovations described herein may be practiced in a wide variety of implementations, including both large devices or small devices, chip-level components, multi-component systems (e.g., radio frequency (RF)-chain, communication interface, processor), distributed arrangements, end-user devices, etc. of varying sizes, shapes, and constitution.
  • RF radio frequency
  • FIG. 1 is a block diagram illustrating details of an example wireless communication system according to one or more aspects.
  • the wireless communication system may include wireless network 100
  • Wireless network 100 may, for example, include a 5G wireless network.
  • components appearing in FIG. 1 are likely to have related counterparts in other network arrangements including, for example, cellular- style network arrangements and non-cellular-style-network arrangements (e.g., device to device or peer to peer or ad hoc network arrangements, etc.).
  • Wireless network 100 illustrated in FIG. 1 includes a number of base stations 105 and other network entities.
  • a base station may be a station that communicates with the UEs and may also be referred to as an evolved node B (eNB), a next generation eNB (gNB), an access point, and the like.
  • eNB evolved node B
  • gNB next generation eNB
  • Each base station 105 may provide communication coverage for a particular geographic area.
  • the term “cell” may refer to this particular geographic coverage area of a base station or a base station subsystem serving the coverage area, depending on the context in which the term is used.
  • base stations 105 may be associated with a same operator or different operators (e.g., wireless network 100 may include a plurality of operator wireless networks).
  • base station 105 may provide wireless communications using one or more of the same frequencies (e.g., one or more frequency bands in licensed spectrum, unlicensed spectrum, or a combination thereof) as a neighboring cell.
  • an individual base station 105 or UE 115 may be operated by more than one network operating entity.
  • each base station 105 and UE 115 may be operated by a single network operating entity.
  • a base station may provide communication coverage for a macro cell or a small cell, such as a pico cell or a femto cell, or other types of cell.
  • a macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions with the network provider.
  • a small cell, such as a pico cell would generally cover a relatively smaller geographic area and may allow unrestricted access by UEs with service subscriptions with the network provider.
  • a small cell such as a femto cell, would also generally cover a relatively small geographic area (e.g., a home) and, in addition to unrestricted access, may also provide restricted access by UEs having an association with the femto cell (e.g., UEs in a closed subscriber group (CSG), UEs for users in the home, and the like).
  • a base station for a macro cell may be referred to as a macro base station.
  • a base station for a small cell may be referred to as a small cell base station, a pico base station, a femto base station or a home base station. In the example shown in FIG.
  • base stations 105d and 105e are regular macro base stations, while base stations 105a- 105c are macro base stations enabled with one of 3 dimension (3D), full dimension (FD), or massive MIMO. Base stations 105a-105c take advantage of their higher dimension MIMO capabilities to exploit 3D beamforming in both elevation and azimuth beamforming to increase coverage and capacity.
  • Base station 105f is a small cell base station which may be a home node or portable access point.
  • a base station may support one or multiple (e.g., two, three, four, and the like) cells.
  • Wireless network 100 may support synchronous or asynchronous operation.
  • the base stations may have similar frame timing, and transmissions from different base stations may be approximately aligned in time.
  • the base stations may have different frame timing, and transmissions from different base stations may not be aligned in time.
  • networks may be enabled or configured to handle dynamic switching between synchronous or asynchronous operations.
  • UEs 115 are dispersed throughout the wireless network 100, and each UE may be stationary or mobile.
  • a mobile apparatus is commonly referred to as a UE in standards and specifications promulgated by the 3 GPP, such apparatus may additionally or otherwise be referred to by those skilled in the art as a mobile station (MS), a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal (AT), a mobile terminal, a wireless terminal, a remote terminal, a handset, a terminal, a user agent, a mobile client, a client, a gaming device, an augmented reality device, vehicular component, vehicular device, or vehicular module, or some other suitable terminology.
  • a “mobile” apparatus or UE need not necessarily have a capability to move, and may be stationary.
  • Some non-limiting examples of a mobile apparatus such as may include implementations of one or more of UEs 115, include a mobile, a cellular (cell) phone, a smart phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a laptop, a personal computer (PC), a notebook, a netbook, a smart book, a tablet, and a personal digital assistant (PDA).
  • a mobile a cellular (cell) phone, a smart phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a laptop, a personal computer (PC), a notebook, a netbook, a smart book, a tablet, and a personal digital assistant (PDA).
  • PDA personal digital assistant
  • a mobile apparatus may additionally be an IoT or “Internet of everything” (IoE) device such as an automotive or other transportation vehicle, a satellite radio, a global positioning system (GPS) device, a global navigation satellite system (GNSS) device, a logistics controller, a drone, a multi-copter, a quad-copter, a smart energy or security device, a solar panel or solar array, municipal lighting, water, or other infrastructure; industrial automation and enterprise devices; consumer and wearable devices, such as eyewear, a wearable camera, a smart watch, a health or fitness tracker, a mammal implantable device, gesture tracking device, medical device, a digital audio player (e.g., MP3 player), a camera, a game console, etc.; and digital home or smart home devices such as a home audio, video, and multimedia device, an appliance, a sensor, a vending machine, intelligent lighting, a home security system, a smart meter, etc.
  • IoE Internet of everything
  • a UE may be a device that includes a Universal Integrated Circuit Card (UICC).
  • a UE may be a device that does not include a UICC.
  • UEs that do not include UICCs may also be referred to as IoE devices.
  • UEs 115a-115d of the implementation illustrated in FIG. 1 are examples of mobile smart phone-type devices accessing wireless network 100
  • a UE may also be a machine specifically configured for connected communication, including machine type communication (MTC), enhanced MTC (eMTC), narrowband IoT (NB-IoT) and the like.
  • MTC machine type communication
  • eMTC enhanced MTC
  • NB-IoT narrowband IoT
  • UEs 115e-l 15k illustrated in FIG. 1 are examples of various machines configured for communication that access wireless network 100.
  • a mobile apparatus such as UEs 115, may be able to communicate with any type of the base stations, whether macro base stations, pico base stations, femto base stations, relays, and the like.
  • a communication link (represented as a lightning bolt) indicates wireless transmissions between a UE and a serving base station, which is a base station designated to serve the UE on the downlink or uplink, or desired transmission between base stations, and backhaul transmissions between base stations.
  • UEs may operate as base stations or other network nodes in some scenarios. Backhaul communication between base stations of wireless network 100 may occur using wired or wireless communication links.
  • base stations 105a-105c serve UEs 115a and 115b using 3D beamforming and coordinated spatial techniques, such as coordinated multipoint (CoMP) or multi-connectivity.
  • Macro base station 105d performs backhaul communications with base stations 105a- 105c, as well as small cell, base station 105f.
  • Macro base station 105d also transmits multicast services which are subscribed to and received by UEs 115c and 115d.
  • Such multicast services may include mobile television or stream video, or may include other services for providing community information, such as weather emergencies or alerts, such as Amber alerts or gray alerts.
  • Wireless network 100 of implementations supports mission critical communications with ultra-reliable and redundant links for mission critical devices, such UE 115e, which is a drone. Redundant communication links with UE 115e include from macro base stations 105d and 105e, as well as small cell base station 105f.
  • UE 115f thermometer
  • UE 115g smart meter
  • UE 115h wearable device
  • wireless network 100 may communicate through wireless network 100 either directly with base stations, such as small cell base station 105f, and macro base station 105e, or in multi-hop configurations by communicating with another user device which relays its information to the network, such as UE 115f communicating temperature measurement information to the smart meter, UE 115g, which is then reported to the network through small cell base station 105f.
  • base stations such as small cell base station 105f, and macro base station 105e
  • UE 115f communicating temperature measurement information to the smart meter
  • UE 115g which is then reported to the network through small cell base station 105f.
  • Wireless network 100 may also provide additional network efficiency through dynamic, low-latency TDD communications or low-latency FDD communications, such as in a vehicle-to-vehicle (V2V) mesh network between UEs 115i-l 15k communicating with macro base station 105e.
  • V2V vehicle-to-vehicle
  • FIG. 2 is a block diagram illustrating examples of base station 105 and UE 115 according to one or more aspects.
  • Base station 105 and UE 115 may be any of the base stations and one of the UEs in FIG. 1.
  • base station 105 may be small cell base station 105f in FIG. 1
  • UE 115 may be UE 115c or 115d operating in a service area of base station 105f, which in order to access small cell base station 105f, would be included in a list of accessible UEs for small cell base station 105f.
  • Base station 105 may also be a base station of some other type. As shown in FIG. 2, base station 105 may be equipped with antennas 234a through 234t, and UE 115 may be equipped with antennas 252a through 252r for facilitating wireless communications.
  • transmit processor 220 may receive data from data source 212 and control information from controller 240, such as a processor.
  • the control information may be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical hybrid-ARQ (automatic repeat request) indicator channel (PHICH), a physical downlink control channel (PDCCH), an enhanced physical downlink control channel (EPDCCH), an MTC physical downlink control channel (MPDCCH), etc.
  • the data may be for a physical downlink shared channel (PDSCH), etc.
  • transmit processor 220 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively.
  • Transmit processor 220 may also generate reference symbols, e.g., for the primary synchronization signal (PSS) and secondary synchronization signal (SSS), and cell-specific reference signal.
  • Transmit (TX) MIMO processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, or the reference symbols, if applicable, and may provide output symbol streams to modulators (MODs) 232a through 232t.
  • MIMO processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, or the reference symbols, if applicable, and may provide output symbol streams to modulators (MODs) 232a through 232t.
  • MODs modulators
  • Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream.
  • Each modulator 232 may additionally or alternatively process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • Downlink signals from modulators 232a through 232t may be transmitted via antennas 234a through 234t, respectively.
  • antennas 252a through 252r may receive the downlink signals from base station 105 and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively.
  • Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples.
  • Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols.
  • MIMO detector 256 may obtain received symbols from demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols.
  • Receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 115 to data sink 260, and provide decoded control information to controller 280, such as a processor.
  • controller 280 such as a processor.
  • transmit processor 264 may receive and process data (e.g., for a physical uplink shared channel (PUSCH)) from data source 262 and control information (e.g., for a physical uplink control channel (PUCCH)) from controller 280. Additionally, transmit processor 264 may also generate reference symbols for a reference signal.
  • PUSCH physical uplink shared channel
  • PUCCH physical uplink control channel
  • the symbols from transmit processor 264 may be precoded by TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for SC-FDM, etc.), and transmitted to base station 105.
  • the uplink signals from UE 115 may be received by antennas 234, processed by demodulators 232, detected by MIMO detector 236 if applicable, and further processed by receive processor 238 to obtain decoded data and control information sent by UE 115.
  • Receive processor 238 may provide the decoded data to data sink 239 and the decoded control information to controller 240.
  • Controllers 240 and 280 may direct the operation at base station 105 and UE 115, respectively. Controller 240 or other processors and modules at base station 105 or controller 280 or other processors and modules at UE 115 may perform or direct the execution of various processes for the techniques described herein, such as to perform or direct the execution illustrated in FIGs. 5-7, or other processes for the techniques described herein. Memories 242 and 282 may store data and program codes for base station 105 and UE 115, respectively. Scheduler 244 may schedule UEs for data transmission on the downlink or the uplink.
  • UE 115 and base station 105 may operate in a shared radio frequency spectrum band, which may include licensed or unlicensed (e.g., contention-based) frequency spectrum. In an unlicensed frequency portion of the shared radio frequency spectrum band, UEs 115 or base stations 105 may traditionally perform a medium-sensing procedure to contend for access to the frequency spectrum. For example, UE 115 or base station 105 may perform a listen-before-talk or listen-before-transmitting (LBT) procedure such as a clear channel assessment (CCA) prior to communicating in order to determine whether the shared channel is available.
  • LBT listen-before-talk or listen-before-transmitting
  • CCA clear channel assessment
  • a CCA may include an energy detection procedure to determine whether there are any other active transmissions.
  • a device may infer that a change in a received signal strength indicator (RSSI) of a power meter indicates that a channel is occupied.
  • RSSI received signal strength indicator
  • a CCA also may include detection of specific sequences that indicate use of the channel.
  • another device may transmit a specific preamble prior to transmitting a data sequence.
  • an LBT procedure may include a wireless node adjusting its own backoff window based on the amount of energy detected on a channel or the acknowledge/negative-acknowledge (ACK/NACK) feedback for its own transmitted packets as a proxy for collisions.
  • ACK/NACK acknowledge/negative-acknowledge
  • a UE may transmit traffic of various and different priorities. For example, in some implementations, a UE may transmit high-priority (HP) uplink control information (UCI) as well as low-priority UCI.
  • HP high-priority
  • UCI uplink control information
  • UCI may be HP UCI or LP UCI.
  • the UE may be configured to multiplex the HP UCI payload and the LP UCI payload on a same PUCCH or PUSCH resource.
  • the UE may separately encode the HP UCI message and the LP UCI message, using different coding rates, in order to provide unequal error protection (e.g., in order to provide a higher error protection to the HP UCI transmissions) and may transmit the multiplexed UCI on a PUCCH or PUSCH resource configured for the multiplexed transmission.
  • the total resources on the PUCCH or PUSCH may be limited. For example, there may be limited resource for the multiplexed PUCCH or PUSCH transmission that includes the multiplexed UCI. Because of this, it may not always be possible to reliably transmit all of the HP UCI message and all of the LP UCI message to a base station. In these cases, the UE may partially compress (or in some cases drop) the LP UCI to a smaller payload size that may be transmitted over the limited resources. It is noted that the techniques described herein focus on a discussion of “compressing” the LP UCI message into a smaller payload size.
  • the same techniques may be applicable when partially “dropping” the LP UCI message to obtain a smaller size, or to any other situation in which the LP UCI message is shortened or made smaller due to the limited resources for the multiplexed UCI transmission.
  • the description herein focuses on a transmission of the multiplexed UCI over a PUCCH resource, the same techniques may be applicable when transmitting the multiplexed UCI over a PUSCH resource.
  • the compression (or in some cases dropping) ratio of the LP UCI message to be multiplexed with the HP UCI message may be controlled by a base station based on the amount of resource elements (REs) and coding rates configured for a particular PUCCH (or PUSCH) resource in which the LP UCI message is to be multiplexed with the HP UCI message and transmitted from the UE to the base station.
  • the base station and the UE may both determine the same compression (or dropping) ratio for the LP UCI message, such as based on a common compression (or dropping) rule.
  • the base station As the base station knows the compression ratio for the LP UCI message that is to be transmitted by the UE, the base station also knows the number of LP UCI bits that may be transmitted on the multiplexed PUCCH (or PUSCH) resource from the UE. In these cases, the base station may receive and decode the HP UCI message and the LP UCI message, as the base station knows how many LP UCI bits are transmitted in the multiplexed UCI transmission.
  • the base station may not be aware of the transmit power that the UE may use when transmitting the multiplexed PUCCH that includes the multiplexed UCI message. More specifically, according to the power control mechanism specified in the standards (e.g., 3 GPP standards), the transmit power to be used by the UE when transmitting a UCI message is proportional to the number of bits to be transmitted for the UCI message (e.g., based on the UCI payload size and a coding rate).
  • the standards e.g., 3 GPP standards
  • the UE may be configured with a maximum transmit power P c max that the UE may not to exceed.
  • the UE may cap the PUCCH transmission and only transmit at Pc , max power, thereby resulting in a received power of the PUCCH transmission at the base station that is insufficient to reliably decode the multiplexed UCI message.
  • This insufficient received power at the base station may impact the reliability of both the HP UCI and LP UCI.
  • the UE may not perform additional compression when there is sufficient transmit power (e.g., when the scheduled transmit power of the multiplexed PUCCH transmission is less than P c max ) for transmitting the multiplexed PUCCH transmission, and may perform additional compression when there is not sufficient transmit power (e.g., when the scheduled transmit power of the multiplexed PUCCH transmission exceeds for transmitting the multiplexed PUCCH transmission.
  • a power headroom report is provided to the base station (e.g., periodically or based on some event) indicating how much power is left at the UE for uplink transmissions.
  • the base station may keep track of the power headroom at the UE and may make scheduling decisions for uplink transmissions from the UE based on the power headroom report.
  • the power headroom reports are typically very slow in comparison to the latency/reliability requirements of HP communications (e.g., including HP UCI).
  • a UE may be configured or scheduled to multiplex an HP UCI message and an LP UCI message for a multiplexed uplink (e.g., PUCCH or PUSCH) transmission.
  • the UE may determine a compression indication for the LP UCI message, which may include determining to reduce the size of the LP UCI message to be multiplexed with the HP UCI message.
  • determining the compression indication for the LP UCI message may include the UE determining whether to reduce the size of the LP UCI message before multiplexing, and/or determining a manner for reducing the size of the size of the LP UCI message.
  • reducing the size of the LP UCI message may include compressing, partially dropping, and/or bundling the LP UCI message.
  • the UE may encode the compression indication jointly with the HP UCI message.
  • the LP UCI message may then be encoded separately from the jointly-encoded compression indication and HP UCI message.
  • the reduction of the size of the LP UCI message may be performed prior to the encoding of the LP UCI message.
  • the separately encoded LP UCI message and the jointly-encoded compression indication and HP UCI message may be multiplexed for the multiplexed uplink transmission, which may be transmitted to the base station.
  • the base station may then decode the jointly-encoded compression indication and HP UCI message to obtain the compression indication for the LP UCI message.
  • the base station may then decode the LP UCI message (if appropriate) based on the compression indication.
  • a UE may be configured or scheduled to multiplex an HP UCI message and an LP UCI message for a multiplexed uplink (e.g., PUCCH or PUSCH) transmission.
  • the UE may be configured to map the HP UCI message to a first set of resource blocks (RBs) and the LP UCI message to a second set of RBs.
  • RBs resource blocks
  • the first set of RBs and the second set of RBs may be non-overlapping and/or may be different.
  • the size of the first set of RBs (e.g., the number of RBs in the first set) may be based on the size of the HP UCI message and a corresponding coding rate.
  • the UE may be configured to generate a first demodulation reference signal (DMRS) for the first set of RBs based on the number of RBs in the first set of RBs, and a second DMRS for the second set of RBs based on the number of RBs in the second set of RBs.
  • DMRS demodulation reference signal
  • the UE may transmit the multiplexed uplink transmission by transmitting the HP UCI message over the first set of RBs and the LP UCI message over the second set of RBs.
  • FIG. 3 is a block diagram of an example wireless communications system 300 that supports managing compression and compression indications of a low-priority UCI message that is multiplexed with a high-priority UCI message in a wireless communication system according to one or more aspects.
  • wireless communications system 300 may implement aspects of wireless network 100.
  • Wireless communications system 300 includes UE 115 and base station 105. Although one UE 115 and one base station 105 are illustrated, in some other implementations, wireless communications system 300 may generally include multiple UEs 115, and may include more than one base station 105 and/or other network entities.
  • UE 115 may include a variety of components (such as structural, hardware components) used for carrying out one or more functions described herein.
  • these components may include one or more processors 302 (hereinafter referred to collectively as “processor 302”), one or more memory devices 304 (hereinafter referred to collectively as “memory 304”), one or more transmitters 316 (hereinafter referred to collectively as “transmitter 316”), and one or more receivers 318 (hereinafter referred to collectively as “receiver 318”).
  • processor 302 may be configured to execute instructions stored in memory 304 to perform the operations described herein.
  • processor 302 includes or corresponds to one or more of receive processor 258, transmit processor 264, and controller 280
  • memory 304 includes or corresponds to memory 282.
  • Memory 304 includes or is configured to LP UCI compression manager 305 RB and DMRS generation manager 306.
  • LP UCI compression manager 305 may be configured to perform operations for determining whether to reduce the size of the LP UCI message, for determining a compression type (e.g., compression, partial drop, bundling, etc.), for determining and/or generating a compression indication, for jointly encoding the compression indication and the HP UCI message, and/or for separately encoding the LP UCI message from the jointly-encoded compression indication and HP UCI message in accordance with aspects of the present disclosure.
  • a compression type e.g., compression, partial drop, bundling, etc.
  • RB and DMRS generation manager 306 may be configured to perform operations for mapping the HP UCI message to a first set of RBs and the LP UCI message to a second set of RBs, and for generating a first DMRS for the first set of RBs and a second DMRS for the second set of RBs in accordance with aspects of the present disclosure.
  • Transmitter 316 is configured to transmit reference signals, control information and data to one or more other devices
  • receiver 318 is configured to receive references signals, synchronization signals, control information and data from one or more other devices.
  • transmitter 316 may transmit signaling, control information and data to, and receiver 318 may receive signaling, control information and data from, base station 105.
  • transmitter 316 and receiver 318 may be integrated in one or more transceivers. Additionally or alternatively, transmitter 316 or receiver 318 may include or correspond to one or more components of UE 115 described with reference to FIG. 2.
  • Base station 105 may include a variety of components (such as structural, hardware components) used for carrying out one or more functions described herein.
  • these components may include one or more processors 352 (hereinafter referred to collectively as “processor 352”), one or more memory devices 354 (hereinafter referred to collectively as “memory 354”), one or more transmitters 356 (hereinafter referred to collectively as “transmitter 356”), and one or more receivers 358 (hereinafter referred to collectively as “receiver 358”).
  • Processor 352 may be configured to execute instructions stored in memory 354 to perform the operations described herein.
  • processor 352 includes or corresponds to one or more of receive processor 238, transmit processor 220, and controller 240
  • memory 354 includes or corresponds to memory 242.
  • Memory 354 includes or is configured to store compression indication manager 355.
  • compression indication manager 355 may be configured to perform operations for decoding a compression indication (e.g., from a jointly-encoded compression indication and HP UCI message) and to decode an LP UCI message based on the compression indication in accordance with aspects of the present disclosure.
  • Transmitter 356 is configured to transmit reference signals, synchronization signals, control information and data to one or more other devices
  • receiver 358 is configured to receive reference signals, control information and data from one or more other devices.
  • transmitter 356 may transmit signaling, control information and data to, and receiver 358 may receive signaling, control information and data from, UE 115.
  • transmitter 356 and receiver 358 may be integrated in one or more transceivers. Additionally or alternatively, transmitter 356 or receiver 358 may include or correspond to one or more components of base station 105 described with reference to FIG. 2.
  • wireless communications system 300 implements a 5G NR network.
  • wireless communications system 300 may include multiple 5G- capable UEs 115 and multiple 5G-capable base stations 105, such as UEs and base stations configured to operate in accordance with a 5G NR network protocol such as that defined by the 3 GPP.
  • UE 115 determines to multiplex an HP UCI message and an LP UCI message together.
  • an uplink resource e.g., a PUCCH or PUSCH resource
  • UE 115 may determine to multiplex the HP UCI message and the LP UCI message in a same uplink resource (e.g., a multiplexed uplink resource for transmitting a multiplexed uplink transmission 380 including a multiplex of the LP UCI message and the HP UCI message).
  • the HP UCI message may have a first HP UCI payload size
  • the LP UCI message may have a second LP UCI payload size.
  • the UCI included in either or both of the HP UCI message and the LP UCI message may include one or more of various types of UCI.
  • the various types of UCI may include hybrid automatic repeat request (HARQ) feedback, a scheduling request (SR) message, low-priority channel state information (CSI) and/or high-priority CSI, etc.
  • UE 115 determines a compression indication for the LP UCI message that is to be multiplexed with the HP UCI message.
  • determining the compression indication may include determining whether to reduce the size of the LP UCI message before multiplexing the LP UCI message with the HP UCI message, and including related information in the compression indication (e.g., whether a reduction of the LP UCI message has been performed, what manner of reduction was performed by UE 115, etc.).
  • UE 115 may be configured with a maximum transmit power P C max.
  • UE 115 may determine that the scheduled transmit power for the multiplexed uplink transmission carrying the multiplexed HP UCI message and LP UCI message may exceed the maximum transmit power P c max °f UE 115. In this case, UE 115 may determine to reduce the size of the multiplexed UCI message by reducing the size of the LP UCI message being multiplexed with the HP UCI message. It is noted that in this case, the HP UCI message is not reduced because reducing the HP UCI message may impact the HP communication which may require high levels of reliability and low levels of latency.
  • UE 115 may reduce the size of the LP UCI message by compressing the LP UCI message (e.g., applying a compression algorithm to the LP UCI message payload) until a scheduled transmit power associated with the compressed LP UCI message and the HP UCI message is below the maximum transmit power P C max of UE 115. For example, UE 115 may compress the LP UCI message a first time to generate a first compressed LP UCI message.
  • UE 115 may calculate a scheduled transmit power for transmitting a multiplexed uplink transmission including the HP UCI message and the first compressed LP UCI message. If the scheduled transmit power for transmitting the multiplexed uplink transmission including the HP UCI message and the first compressed LP UCI message is below the maximum transmit power P c max of UE 115, UE 115 may proceed to multiplex the HP UCI message and the first compressed LP UCI message, as described in more detail below, and may transmit the multiplex uplink transmission to base station 105 using the calculated transmit power.
  • UE 115 may continue to compress the LP UCI message until the scheduled transmit power for transmitting the multiplexed uplink transmission including the HP UCI message and the compressed LP UCI message falls below the maximum transmit power P c max of UE 115. For example, UE 115 may further compress the first compressed LP UCI message to generate a second compressed LP UCI message. UE 115 may calculate a scheduled transmit power for transmitting a multiplexed uplink transmission including the HP UCI message and the second compressed LP UCI message.
  • UE 115 may proceed to multiplex the HP UCI message and the second compressed LP UCI message, as described in more detail below, and may transmit the multiplex uplink transmission to base station 105 using the calculated transmit power. In some aspects, UE 115 may continue to compress the LP UCI message until no LP UCI is include in the compressed LP UCI message to be multiplexed (e.g., until the size of the compressed LP UCI message is zero).
  • UE 115 may continue to compress the LP UCI message until there is no more LP UCI message to be compressed. At this point, an LP UCI message may not be multiplexed with the HP UCI message.
  • UE 115 may determine whether to reduce the size of the LP UCI message before multiplexing the LP UCI message with the HP UCI message by determining whether a channel between UE 115 and base station 105 to which the uplink transmission 380 is being transmitted is blocked. When the channel between UE 115 and base station 105 to which the uplink transmission 380 is being transmitted is determined to be blocked, UE 115 may determine to reduce the LP UCI message being multiplexed with the HP UCI message. In some aspects, UE 115 may reduce the size of the LP UCI message by dropping or discarding at least a portion of the LP UCI message. In some aspects, the portion being dropped may be smaller than that the size of the LP UCI message, or may include the entire LP UCI message. These aspects of the present disclosure may be applicable in implementations using frequency range 2 (FR2).
  • FR2 frequency range 2
  • UE 115 may determine whether to reduce the size of the LP UCI message before multiplexing the LP UCI message with the HP UCI message by determining whether the total number of resources scheduled for the multiplexed uplink transmission carrying the multiplexed HP UCI message and LP UCI message is insufficient to convey or transport all of the HP UCI message and/or all of the LP UCI message. For example, in aspects, a set of resources may be allocated or scheduled for transmitting the multiplexed uplink transmission carrying the multiplexed HP UCI message and LP UCI message to base station 105.
  • UE 115 may determine that the set of resource is not sufficient for transmitting the multiplexed UCI payload, as the size of the multiplexed UCI payload may include the HP UCI message and/or the LP UCI message together. In this case, UE 115 may determine to reduce the size of the multiplexed UCI message by reducing the size of the LP UCI message being multiplexed.
  • UE 115 may reduce the size of the LP UCI message by compressing the LP UCI message (e.g., applying a compression algorithm to the LP UCI message payload) to a number of bits that may be carried in the total number of resources scheduled for the multiplexed uplink transmission.
  • UE 115 may determine to compress the LP UCI message to a first number of bits based on the scheduled coding rate of the LP UCI message on the uplink transmission resource, as well as based on the number of resources that may be used for the HP UCI message. It is noted that in this case, the HP UCI message is not compressed or reduced at all. UE 115 may then compress the LP UCI message to the first number of bits calculated in accordance with the preceding.
  • determining the compression indication may include including related information in the compression indication. It is noted that without a compression indication (e.g., an indication that the LP UCI message is compressed, and the compression rule and/or manner in which the LP UCI message is compressed), the base station may not be able to decode the LP UCI, since the base station may not be aware whether and/or how the LP UCI may be compressed.
  • a compression indication e.g., an indication that the LP UCI message is compressed, and the compression rule and/or manner in which the LP UCI message is compressed
  • the related information may include a compression ratio of the LP UCI message.
  • UE 115 may determine to compress the LP UCI message to a compressed LP UCI message size.
  • UE 115 may calculate a compression ratio of the number of LP UCI message bits prior to the compression to the number of LP UCI message bits after the compression (e.g., the compressed LP UCI message size).
  • UE 115 may include the compression ratio in the compression indication to be sent to base station 105.
  • the related information may include a size (e.g., a number of bits) of the LP UCI payload after compression.
  • UE 115 may determine to compress the LP UCI message to a compressed LP UCI message size.
  • UE 115 may include the compressed LP UCI message size in the compression indication to be sent to base station 105.
  • UE 115 may use the compressed LP UCI message size to indicate to base station 105 whether or not the multiplexed uplink transmission includes any LP UCI payload bits.
  • UE 115 may include a non-zero compressed LP UCI message size in the compression indication to indicate to base station 105 that the multiplexed uplink transmission includes LP UCI message payload bits.
  • UE 115 may include a zero for the compressed LP UCI message size in the compression indication to indicate to base station 105 that the multiplexed uplink transmission includes no LP UCI message payload bits.
  • the related information may include a type of compression or reduction that UE 115 may apply to reduce the LP UCI message prior to the multiplexing.
  • UE 115 may reduce the size of the LP UCI message by applying compression (e.g., applying a compression algorithm), by dropping at least a portion of the LP UCI message, or by bundling the LP UCI message.
  • bundling the LP UCI message may include, when the LP UCI message includes a HARQ feedback message, more than one HARQ feedback bits may be bundled into one HARQ feedback bit (e.g., across code block groups (CBGs)).
  • CBGs code block groups
  • UE 115 jointly encodes the compression indication and the HP UCI message.
  • UE 115 may encode the compression indication obtained in accordance with aspects of the present disclosure and the HP UCI message together to generate a jointly-encoded message that includes the compression indication and the HP UCI message.
  • UE 115 jointly encodes the compression indication and the HP UCI message using a first coding rate.
  • the first coding rate may be associated with a scheduled coding rate associated with the HP UCI message for the multiplexed uplink transmission resource.
  • UE 115 may apply the compression indication to the LP UCI message.
  • UE 115 may reduce the LP UCI message as described above, when UE 115 determines to reduce the LP UCI message in accordance with aspects of the present disclosure described herein.
  • UE 115 may reduce the LP UCI message size by compressing the LP UCI message (e.g., using a compression algorithm), dropping at least a portion of the LP UCI message before multiplexing the LP UCI message with the HP UCI message, and/or bundling more than one bit of the LP UCI message into one bit of the LP UCI message.
  • bundling multiple HARQ feedback bits into one HARQ feedback bit may include UE 115 setting the bundled bit to be an acknowledgement (ACK) when all of the multiple HARQ feedback bits are ACK, and/or UE 115 setting the bundled bit to be an non-ACK(NACK) when any of the multiple HARQ feedback bits are a NACK.
  • ACK acknowledgement
  • NACK non-ACK
  • UE 115 may determine not to reduce the LP UCI message at all (and in these cases the compression indication may indicate that no reduction (e.g., no compression, no dropping, and/or no bundling), has been performed by UE 115).
  • the resulting reduced LP UCI message, or in some cases the non-reduced LP UCI message, may be encoded before being multiplexed with the HP UCI message.
  • the compression indication may include a one-bit indication indicating whether any bits of the LP UCI message are included in the multiplexed uplink transmission or not.
  • the compression ratio may indicate either 0 (e.g., no LP UCI bits) or 1 (e.g., at least one LP UCI bit).
  • UE 115 encodes the LP UCI message (e.g., the reduced or unreduced LP UCI message). For example, UE 115 may encode the compressed, partially dropped, and/or bundled LP UCI message separately from the joint encoding of the compression indication and the HP UCI message. In some cases, such as when the LP UCI message is not reduced (e.g., not reduced by compression, partial dropping, and/or bundling), UE 115 may encode the unreduced LP UCI message separately from the joint encoding of the compression indication and the HP UCI message LP UCI message. In these aspects, UE 115 may encode the LP UCI message using a second coding rate.
  • the second coding rate may be associated with a scheduled coding rate associated with the LP UCI message for the multiplexed uplink transmission resource. In some aspects, the second coding rate may be different from the first coding rate used for jointly encoding the compression indication and the HP UCI message.
  • UE 115 multiplexes together, on the uplink transmission resource, the encoded LP UCI message and the jointly- encoded message that includes a joint encoding of the HP UCI message and the compression indication. For example, after determining a set of resources on which to multiplex the encoded LP UCI message and the jointly-encoded message that includes a joint encoding of the HP UCI message and the compression indication, UE 115 may generate multiplexed uplink transmission 380 by multiplexing the encoded LP UCI message and the jointly-encoded message that includes a joint encoding of the HP UCI message and the compression indication on the set of resources determined by UE 115. During operation of wireless communications system 300, UE 115 transmits multiplexed uplink transmission 380 to base station 105.
  • base station 105 receives multiplexed uplink transmission 380 from UE 115.
  • multiplexed uplink transmission 380 may include the encoded LP UCI message and the jointly-encoded message that includes a joint encoding of the HP UCI message and the compression indication.
  • base station 105 may first decode the jointly-encoded message that includes a joint encoding of the HP UCI message and the compression indication to obtain the HP UCI message and the compression indication.
  • the compression indication may include information and indications about any size reduction of the LP UCI message transmitted from UE 115 in multiplexed uplink transmission 380.
  • the compression indication may include an indication of whether the LP UCI message was reduced before multiplexing (e.g., by compression, partial dropping, and/or bundling) as well as information on compression ratios used for the LP UCI message, type of compression used on the LP UCI message, number of bits in the LP UCI message, etc.
  • UE 115 may obtain compression information about the LP UCI message in multiplexed uplink transmission 380 from the compression indication.
  • base station 105 decodes the LP UCI message in multiplexed uplink transmission 380 based on the compression indication obtained from the jointly-encoded HP UCI message and compression indication.
  • FIG. 4 is a block diagram illustrating an example wireless communication system that supports non-overlapping resource block allocation and priority-specific DMRS assignment for multiplexed UCI messages of different priorities according to one or more aspects of the present disclosure.
  • the techniques that are described herein with respect to FIG. 4 may be advantageous when addressing problems that arise from a potential misalignment in the UCI payload size expected by the base station and the UCI payload size actually sent by the UE.
  • a payload size of a UCI (and the size of the PUCCH resource in which the UCI may be transmitted to the base station) is determined by the number of downlink grants that the UE may receive prior to transmitting the UCI message include feedback (e.g., HARQ feedback).
  • feedback e.g., HARQ feedback
  • the base station may expect, and the UE may report, five HARQ feedback bits, typically.
  • associated downlink grants may be counted separately.
  • the payload size of a HARQ-ACK codebook may be determined by the corresponding DCI.
  • the UE may receive three LP downlink grants (e.g., eMBB downlink grant) even though the base station may transmit four LP downlink grants. This is because LP communication may be less reliable (e.g., bad channel or wrong decoding).
  • the base station may expect an LP HARQ feedback codebook that includes four bits, but the UE may report an LP HARQ feedback codebook that includes only three bits. Without multiplexing the HP UCI with the LP UCI, this may not present a significant problem for the system. However, when the LP UCI is multiplexed with the HP UCI, this misalignment between the base station and the UE with respect to the LP communication may affect the HP UCI traffic. For example, the UE may determine a total UCI payload size for the multiplexed UCI based on the incorrect LP UCI size, and may select a PUCCH resource based on the incorrectly computed total multiplexed UCI payload size.
  • the base station may determine a different PUCCH resource, as the base station determines a different total multiplexed UCI payload size, thereby creating mismatch that may affect the HP transmission. It is noted that the above issue may arise when the LP UCI (e.g., HARQ feedback) is configured with a Type-2 HARQ feedback codebook (also known as dynamic HARQ feedback codebook).
  • a Type-2 HARQ feedback codebook also known as dynamic HARQ feedback codebook
  • the HP UCI message and the LP UCI message may be multiplexed (e.g., frequency-division multiplexed) on different RBs of the PUCCH resource when the PUCCH format is format 2 or format 3.
  • This solution ensures that even if the base station and the UE do not agree on the LP UCI payload size, the HP UCI message may still be decoded properly, as long as both the UE and the base station know the correct HP UCI message size, since the number of RBs used to transmit the HP UCI message depends on the HP UCI payload size, and not on the LP UCI payload size.
  • the UE may generate a single DMRS sequence whose length may be determined by the total number of RBs of the PUCCH.
  • the DMRS that may be transmitted on RBs containing the HP UCI message only may depend on the index of these RBs, and may be independent of the number of RBs (or the associated indices) used to transmit the LP UCI message.
  • PUCCH format 3 there is a problem that arises with this approach when using PUCCH format 3.
  • a DMRS sequence of the entire PUCCH transmission may be dependent on the number of RBs that are used to transmit each of the LP UCI message and the HP UCI message.
  • a DMRS sequence of the entire PUCCH transmission may be dependent on the number of RBs that are used to transmit each of the LP UCI message and the HP UCI message.
  • UE 115 may determine to multiplex HP UCI message 451 and LP UCI message 452 to be transmitted in a multiplexed uplink resource that includes N symbols and L1+L2 RBs.
  • UE 115 may map HP UCI message 451 to a first set of RBs that includes LI RBs, and may map LP UCI message 452 to a second set of RBs that includes L2 RBs.
  • the first set of RBs and the second set of RBs may be non-overlapping and/or may be different.
  • the number of RBs LI in the first set of RBs may be based on the size of HP UCI message 451, and may not depend on the size of LP UCI message 452.
  • the number of RBs LI in the first set of RBs may be based on the coding rate associated with the HP UCI message transmission within the uplink transmission.
  • UE 115 may generate a first DMRS sequence to be used for transmitting the first set of RBs for the HP UCI message.
  • UE 115 may also generate a second DMRS sequence to be used for transmitting the second set of RBs for the LP UCI message.
  • the first DMRS sequence may be generated based on the number of RBs in the first set of RBs for transmitting the HP UCI message
  • the second DMRS sequence may be generated based on the number of RBs in the second set of RBs for transmitting the LP UCI message.
  • UE 115 may transmit the HP UCI message of the multiplexed uplink transmission in the first set of RBs, and may transmit the LP UCI message of the multiplexed uplink transmission in the second set of RBs.
  • FIG. 5 is a flow diagram illustrating an example process 500 that supports managing compression and compression indications of an LP UCI message that is multiplexed with an HP UCI message in a wireless communication system according to one or more aspects.
  • Operations of process 500 may be performed by a UE, such as UE 115 described above with reference to FIGs. 1-4, or UE 800 described with reference to FIG. 8.
  • example operations (also referred to as “blocks”) of process 500 may enable UE 115 to support managing compression and compression indications of an LP UCI message that is multiplexed with an HP UCI message.
  • FIG. 8 is a block diagram illustrating UE 800 configured according to aspects of the present disclosure.
  • UE 800 includes the structure, hardware, and components as illustrated for UE 115 of FIG. 2.
  • UE 800 includes controller/processor 280, which operates to execute logic or computer instructions stored in memory 282, as well as controlling the components of UE 800 that provide the features and functionality of UE 800.
  • UE 800 under control of controller/processor 280, transmits and receives signals via wireless radios 801a-r and antennas 252a-r.
  • Wireless radios 801a-r include various components and hardware, as illustrated in FIG. 2 for UE 115, including modulator/demodulators 254a-r, MIMO detector 256, receive processor 258, transmit processor 264, and TX MIMO processor 266.
  • a UE determines a compression indication for an LP UCI payload to be multiplexed with an HP UCI payload.
  • the UE under control of controller/processor 280, executes compression indication manager 802, stored in memory 282.
  • the functionality implemented through the execution environment of compression indication manager 802 allows for the UE to perform compression indication related operations according to the various aspects herein.
  • determining the compression indication for the LP UCI payload may include determining whether to reduce a size of the LP UCI payload to be multiplexed with the HP UCI payload, and then reducing the size of the LP UCI payload to be multiplexed with the HP UCI payload when a determination to reduce the size of the LP UCI payload to be multiplexed with the HP UCI payload is made.
  • reducing the size of the LP UCI payload may include compressing the LP UCI payload using a compression algorithm, dropping at least a portion of the LP UCI payload, and/or bundling at least a portion of the LP UCI payload.
  • the compression indication may include one or more of a compression ratio of the LP UCI payload that indicates a ratio of the size of the LP UCI payload before compression to the size of the LP UCI payload after compression, a number of bits of the LP UCI payload after compression, and a type of compression of the LP UCI payload that indicates a manner for reducing the size of the LP UCI payload.
  • determining whether to reduce the size of the LP UCI payload to be multiplexed with the HP UCI payload may include determining whether one or more of several conditions is found to be present. For example, determining whether to reduce the size of the LP UCI payload to be multiplexed with the HP UCI payload may include determining whether a scheduled power for transmitting the multiplexed uplink transmission exceeds a maximum transmit power configured for the UE, determining whether a channel between the UE and the base station is blocked, and/or determining whether a total number of resources scheduled for the uplink transmission is insufficient to carry the multiplexed LP UCI payload and HP UCI payload. In these cases, UE 115 may determine to reduce the size of the LP UCI payload when one of the conditions is found to be present.
  • reducing the size of the LP UCI payload to be multiplexed with the HP UCI payload may include compressing the LP UCI payload until a total transmit power associated with the compressed LP UCI payload and the HP UCI payload is below the maximum transmit power, and/or until the size of the LP UCI payload is compressed to zero.
  • reducing the size of the LP UCI payload to be multiplexed with the HP UCI payload may include compressing the LP UCI payload to a number of bits that the total number of resources scheduled for the uplink transmission is sufficient to carry based on a coding rate associated with the LP UCI payload and based on a number of resources to be used for the HP UCI payload.
  • UE 115 encodes the compression indication for the LP UCI payload jointly with the HP UCI payload
  • UE 115 encodes the LP UCI payload separately from the jointly-encoded compression indication and HP UCI payload.
  • the UE under control of controller/processor 280, executes encoding logic 803, stored in memory 282.
  • the functionality implemented through the execution environment of encoding logic 803 allows for the UE to perform encoding operations according to the various aspects herein.
  • encoding the LP UCI payload separately from the jointly-encoded compression indication and HP UCI payload may include encoding the LP UCI payload using a first coding rate, and encoding the compression indication and HP UCI payload jointly using a second coding rate different from the first coding rate.
  • UE 115 multiplexes the encoded LP UCI payload and the jointly-encoded compression indication and HP UCI payload in an uplink transmission to a base station (e.g., base station 105). UE 115 may then transmit the multiplexed uplink transmission to the base station.
  • a base station e.g., base station 105
  • UE 115 may then transmit the multiplexed uplink transmission to the base station.
  • FIG. 6 is a block diagram illustrating an example an example process 600 that supports managing compression and compression indications of an LP UCI message that is multiplexed with an HP UCI message in a wireless communication system according to one or more aspects. Operations of process 600 may be performed by a base station, such as base station 105 described above with reference to FIGs. 1-4, or base station 900 described with reference to FIG. 9.
  • FIG. 9 is a block diagram illustrating base station 900 configured according to one aspect of the present disclosure.
  • Base station 900 includes the structure, hardware, and components as illustrated for base station 105 of FIG. 2.
  • base station 900 includes controller/processor 240, which operates to execute logic or computer instructions stored in memory 242, as well as controlling the components of base station 900 that provide the features and functionality of base station 900.
  • Base station 900 under control of controller/processor 240, transmits and receives signals via wireless radios 901a-t and antennas 234a-t.
  • Wireless radios 901a-t include various components and hardware, as illustrated in FIG. 2 for base station 105, including modulator/demodulators 232a-t, MIMO detector 236, receive processor 238, transmit processor 220, and TX MIMO processor 230.
  • a network entity receives, from a UE (e.g., UE 115), a multiplexed uplink transmission that includes a multiplex of an encoded LP UCI payload and an HP UCI payload jointly-encoded with a compression indication for the LP UCI payload.
  • base station 105 under control of controller/processor 240, executes decoding logic 902, stored in memory 242.
  • decoding logic 902 stored in memory 242.
  • base station 105 decodes the jointly-encoded HP UCI payload and compression indication to obtain the HP UCI payload and the compression indication.
  • the compression indication may include one or more of a compression ratio of the LP UCI payload that indicates a ratio of the size of the LP UCI payload before compression to the size of the LP UCI payload after compression, a number of bits of the LP UCI payload after compression, and a type of compression of the LP UCI payload that indicates a manner for reducing the size of the LP UCI payload.
  • a zero number of bits of the LP UCI payload after compression may indicate to base station 105 that no LP UCI bits are included in the multiplexed uplink transmission, and a non-zero number of bits of the LP UCI payload after compression may indicate to base station 105 that at least one LP UCI bit is included in the multiplexed uplink transmission.
  • base station 105 may use the compression indication to decide the LP UCI payload.
  • base station 105 decodes, based on the compression indication, the LP UCI payload.
  • FIG. 7 is a flow diagram illustrating an example process 700 that supports non overlapping resource block allocation and priority-specific DMRS assignment for multiplexed UCI messages of different priorities in a wireless communication system according to one or more aspects in a wireless communication system according to one or more aspects.
  • Operations of process 700 may be performed by a UE, such as UE 115 described above with reference to FIGs. 1-4, or UE 800 described with reference to FIG. 8.
  • example operations (also referred to as “blocks”) of process 500 may enable UE 115 to support non-overlapping resource block allocation and priority-specific DMRS assignment for multiplexed UCI messages of different priorities.
  • a UE determines to multiplex an HP UCI message having a first size and an LP UCI message having a second size for a multiplexed PUCCH transmission.
  • the UE under control of controller/processor 280, executes multiplexing manager 804, stored in memory 282.
  • the functionality implemented through the execution environment of multiplexing manager 804 allows for the UE to perform multiplexing related operations according to the various aspects herein.
  • determining to multiplex the HP UCI message and the LP UCI message may include determining a PUCCH resource collision.
  • a PUCCH resource in which UE 600 may be scheduled to transmit the HP UCI message may collide in time with a PUCCH resource in which UE 600 may be scheduled to transmit the LP UCI message. Due to this collision, UE 600 may determine to multiplex the HP UCI message and the LP UCI message in a same PUCCH resource (e.g., a multiplexed PUCCH resource for transmitting a multiplexed PUCCH transmission including a multiplex of the LP UCI message and the HP UCI message).
  • UE 115 maps the HP UCI message to a first set of RBs to be used for transmitting the HP UCI message of the multiplexed PUCCH transmission, and the LP UCI message to a second set of RBs to be used for transmitting the LP UCI message of the multiplexed PUCCH transmission.
  • the second set of RBs is non-overlapping with the first set of RBs.
  • the UE under control of controller/processor 280, executes RB mapping logic 805, stored in memory 282.
  • the functionality implemented through the execution environment of RB mapping logic 805 allows for the UE to perform RB mapping operations according to the various aspects herein.
  • the number of RBs in the first set of RBs may be based on the size of the HP UCI message, and may not depend on the size of the LP UCI message.
  • the number of RBs in the first set of RBs may be based on the coding rate associated with the HP UCI message transmission within the uplink transmission.
  • UE 115 generates a first DMRS to be used for transmitting the first set of RBs, and a second DMRS to be used for transmitting the second set of RBs.
  • the UE under control of controller/processor 280, executes DMRS generation logic 806, stored in memory 282.
  • DMRS generation logic 806 allows for the UE to perform DMRS generation operations according to the various aspects herein.
  • the first DMRS sequence may be generated based on the number of RBs in the first set of RBs for transmitting the HP UCI message
  • the second DMRS sequence may be generated based on the number of RBs in the second set of RBs for transmitting the LP UCI message.
  • UE 115 may transmit the HP UCI message of the multiplexed uplink transmission in the first set of RBs using the first DMRS, and may transmit the LP UCI message of the multiplexed uplink transmission in the second set of RBs using the second DMRS.
  • techniques for supporting managing compression and compression indications of an LP UCI message that is multiplexed with an HP UCI message in a wireless communication system may include additional aspects, such as any single aspect or any combination of aspects described below or in connection with one or more other processes or devices described elsewhere herein.
  • supporting managing compression and compression indications of an LP UCI message that is multiplexed with an HP UCI message in a wireless communication system may include an apparatus configured to determine a compression indication for a low-priority (LP) uplink control information (UCI) payload to be multiplexed with a high-priority (HP) UCI payload, encode the compression indication for the LP UCI payload jointly with the HP UCI payload, encode the LP UCI payload separately from the jointly-encoded compression indication and HP UCI payload, and multiplex the encoded LP UCI payload and the jointly-encoded compression indication and HP UCI payload in an uplink transmission to a base station.
  • LP low-priority
  • UCI uplink control information
  • HP high-priority
  • the apparatus may perform or operate according to one or more aspects as described below.
  • the apparatus includes a wireless device, such as a UE.
  • the apparatus may include at least one processor, and a memory coupled to the processor.
  • the processor may be configured to perform operations described herein with respect to the apparatus.
  • the apparatus may include a non-transitory computer-readable medium having program code recorded thereon and the program code may be executable by a computer for causing the computer to perform operations described herein with reference to the apparatus.
  • the apparatus may include one or more means configured to perform operations described herein.
  • a method of wireless communication may include one or more operations described herein with reference to the apparatus.
  • determining the compression indication for the LP UCI payload includes determining whether to reduce a size of the LP UCI payload to be multiplexed with the HP UCI payload.
  • determining the compression indication for the LP UCI payload includes reducing the size of the LP UCI payload to be multiplexed with the HP UCI payload when a determination to reduce the size of the LP UCI payload to be multiplexed with the HP UCI payload is made.
  • the compression indication includes a compression ratio of the LP UCI payload that indicates a ratio of the size of the LP UCI payload before compression to the size of the LP UCI payload after compression.
  • the compression indication includes a number of bits of the LP UCI payload after compression.
  • the compression indication includes a type of compression of the LP UCI payload, wherein the type of compression indicates a manner for reducing the size of the LP UCI payload.
  • a zero number of bits of the LP UCI payload after compression indicates that no LP UCI bits are included in the multiplexed uplink transmission, and a non-zero number of bits of the LP UCI payload after compression indicates that at least one LP UCI bit is included in the multiplexed uplink transmission.
  • reducing the size of the LP UCI payload to be multiplexed with the HP UCI payload includes compressing the LP UCI payload using a compression algorithm.
  • reducing the size of the LP UCI payload to be multiplexed with the HP UCI payload includes dropping at least a portion of the LP UCI payload.
  • dropping the at least a portion of the LP UCI payload includes discarding without multiplexing the at least a portion of the LP UCI payload with the HP UCI payload.
  • reducing the size of the LP UCI payload to be multiplexed with the HP UCI payload includes bundling at least a portion of the LP UCI payload.
  • bundling at least a portion of the LP UCI payload includes bundling more than one bit of the LP UCI payload into one bit of the LP UCI payload.
  • determining whether to reduce the size of the LP UCI payload to be multiplexed with the HP UCI payload includes determining whether a scheduled power for transmitting the multiplexed uplink transmission exceeds a maximum transmit power configured for the UE.
  • determining whether to reduce the size of the LP UCI payload to be multiplexed with the HP UCI payload includes determining whether a channel between the UE and the base station is blocked.
  • determining whether to reduce the size of the LP UCI payload to be multiplexed with the HP UCI payload includes determining whether a total number of resources scheduled for the uplink transmission is insufficient to carry the multiplexed LP UCI payload and HP UCI payload.
  • reducing the size of the LP UCI payload to be multiplexed with the HP UCI payload includes compressing the LP UCI payload until a total transmit power associated with the compressed LP UCI payload and the HP UCI payload is below the maximum transmit power.
  • reducing the size of the LP UCI payload to be multiplexed with the HP UCI payload includes compressing the LP UCI payload until the size of the LP UCI payload is compressed to zero.
  • reducing the size of the LP UCI payload to be multiplexed with the HP UCI payload includes compressing the LP UCI payload to a number of bits that the total number of resources scheduled for the uplink transmission is sufficient to carry based on a coding rate associated with the LP UCI payload and based on a number of resources to be used for the HP UCI payload.
  • encoding the LP UCI payload separately from the jointly-encoded compression indication and HP UCI payload includes encoding the LP UCI payload using a first coding rate.
  • encoding the LP UCI payload separately from the jointly-encoded compression indication and HP UCI payload includes encoding the compression indication and HP UCI payload jointly using a second coding rate different from the first coding rate.
  • the uplink transmission is one of a PUSCH transmission or a PUCCH transmission.
  • supporting non-overlapping resource block allocation and priority-specific DMRS assignment for multiplexed UCI messages of different priorities in a wireless communication system may include an apparatus configured to determine to multiplex an HP UCI message having a first size and an LP UCI message having a second size for a multiplexed PUCCH transmission, and to map the HP UCI message to a first set of RBs to be used for transmitting the HP UCI message of the multiplexed PUCCH transmission, and the LP UCI message to a second set of RBs to be used for transmitting the LP UCI message of the multiplexed PUCCH transmission.
  • the second set of RBs is non-overlapping with the first set of RBs.
  • the apparatus is further configured to generate a first DMRS to be used for transmitting the first set of RBs, and a second DMRS to be used for transmitting the second set of RBs. Additionally, the apparatus may perform or operate according to one or more aspects as described below.
  • the apparatus includes a wireless device, such as a UE.
  • the apparatus may include at least one processor, and a memory coupled to the processor.
  • the processor may be configured to perform operations described herein with respect to the apparatus.
  • the apparatus may include a non-transitory computer-readable medium having program code recorded thereon and the program code may be executable by a computer for causing the computer to perform operations described herein with reference to the apparatus.
  • mapping the HP UCI message to the first set of RBs includes determining a number of RBs for the first set of RBs based on a size of the HP UCI message and a coding rate associated with the HP UCI message.
  • the first DMRS is generated based on a number of RBs in the first set of RBs
  • the second DMRS is generated based on a number of RBs in the second set of RBs.
  • the PUCCH transmission includes a format 3 PUCCH transmission.
  • the techniques of the twenty-second aspect include transmitting the HP UCI message of the multiplexed PUCCH transmission in the first set of RBs.
  • the techniques of the twenty-second aspect include transmitting the LP UCI message of the multiplexed PUCCH transmission in the second set of RBs.
  • supporting managing compression and compression indications of an LP UCI message that is multiplexed with an HP UCI message in a wireless communication system may include an apparatus configured to receive, from a UE, a multiplexed uplink transmission that includes a multiplex of an encoded LP UCI payload and an HP UCI payload jointly-encoded with a compression indication for the LP UCI payload, decode the jointly-encoded HP UCI payload and compression indication to obtain the HP UCI payload and the compression indication, and decode, based on the compression indication, the LP UCI payload.
  • the apparatus may perform or operate according to one or more aspects as described below.
  • the apparatus includes a wireless device, such as a base station.
  • the apparatus may include at least one processor, and a memory coupled to the processor.
  • the processor may be configured to perform operations described herein with respect to the apparatus.
  • the apparatus may include a non-transitory computer-readable medium having program code recorded thereon and the program code may be executable by a computer for causing the computer to perform operations described herein with reference to the apparatus.
  • the apparatus may include one or more means configured to perform operations described herein.
  • a method of wireless communication may include one or more operations described herein with reference to the apparatus.
  • the compression indication includes a compression ratio of the LP UCI payload that indicates a ratio of the size of the LP UCI payload before compression by the UE to the size of the LP UCI payload after compression by the UE.
  • the compression indication includes a number of bits of the LP UCI payload after compression by the UE.
  • the compression indication includes a type of compression of the LP UCI payload.
  • the type of compression indicates a manner for reducing the size of the LP UCI payload by the UE.
  • a zero number of bits of the LP UCI payload after compression indicates that no LP UCI bits are included in the multiplexed uplink transmission
  • a non-zero number of bits of the LP UCI payload after compression indicates that at least one LP UCI bit is included in the multiplexed uplink transmission.
  • the compression indication indicates that a size of the LP UCI payload was reduced by the UE before multiplexing with the HP UCI payload.
  • the UE reduces the size of the LP UCI payload by compressing the LP UCI payload using a compression algorithm.
  • the UE reduces the size of the LP UCI payload by dropping at least a portion of the LP UCI payload.
  • dropping the at least a portion of the LP UCI payload includes discarding without multiplexing the at least a portion of the LP UCI payload with the HP UCI payload.
  • the UE reduces the size of the LP UCI payload by bundling at least a portion of the LP UCI payload.
  • bundling at least a portion of the LP UCI payload includes bundling more than one bit of the LP UCI payload into one bit of the LP UCI payload.
  • the size of the LP UCI payload is reduced by the UE in response to determining whether a scheduled power for transmitting the multiplexed uplink transmission exceeds a maximum transmit power configured for the UE.
  • the size of the LP UCI payload is reduced by the UE in response to determining whether a channel between the UE and the base station is blocked.
  • the size of the LP UCI payload is reduced by the UE in response to determining whether a total number of resources scheduled for the uplink transmission is insufficient to carry the multiplexed LP UCI payload and HP UCI payload.
  • reducing the size of the LP UCI payload to be multiplexed with the HP UCI payload includes compressing the LP UCI payload until a total transmit power associated with the compressed LP UCI payload and the HP UCI payload is below the maximum transmit power.
  • reducing the size of the LP UCI payload to be multiplexed with the HP UCI payload includes compressing the LP UCI payload until the size of the LP UCI payload is compressed to zero.
  • reducing the size of the LP UCI payload to be multiplexed with the HP UCI payload includes compressing the LP UCI payload to a number of bits that the total number of resources scheduled for the uplink transmission is sufficient to carry based on a coding rate associated with the LP UCI payload and based on a number of resources to be used for the HP UCI payload.
  • the encoded LP UCI payload is encoded using a first coding rate.
  • the jointly- encoded HP UCI payload and compression indication are encoded jointly using a second coding rate different from the first coding rate.
  • the uplink transmission is one of a PUSCH transmission or a PUCCH transmission.
  • Components, the functional blocks, and the modules described herein with respect to FIGs. 1-9 include processors, electronics devices, hardware devices, electronics components, logical circuits, memories, software codes, firmware codes, among other examples, or any combination thereof.
  • Software shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, application, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and/or functions, among other examples, whether referred to as software, firmware, middleware, microcode, hardware description language or otherwise.
  • features discussed herein may be implemented via specialized processor circuitry, via executable instructions, or combinations thereof.
  • the hardware and data processing apparatus used to implement the various illustrative logics, logical blocks, modules and circuits described in connection with the aspects disclosed herein may be implemented or performed with a general purpose single- or multi-chip processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein.
  • a general purpose processor may be a microprocessor, or, any conventional processor, controller, microcontroller, or state machine.
  • a processor may be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • particular processes and methods may be performed by circuitry that is specific to a given function.
  • the functions described may be implemented in hardware, digital electronic circuitry, computer software, firmware, including the structures disclosed in this specification and their structural equivalents thereof, or in any combination thereof. Implementations of the subject matter described in this specification also may be implemented as one or more computer programs, that is one or more modules of computer program instructions, encoded on a computer storage media for execution by, or to control the operation of, data processing apparatus.
  • the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • the processes of a method or algorithm disclosed herein may be implemented in a processor-executable software module which may reside on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that may be enabled to transfer a computer program from one place to another.
  • a storage media may be any available media that may be accessed by a computer.
  • Such computer-readable media may include random-access memory (RAM), read-only memory (ROM), electrically erasable programmable read only memory (EEPROM), CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that may be used to store desired program code in the form of instructions or data structures and that may be accessed by a computer.
  • RAM random-access memory
  • ROM read-only memory
  • EEPROM electrically erasable programmable read only memory
  • CD-ROM or other optical disk storage such as any connection may be properly termed a computer-readable medium.
  • Disk and disc includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk, and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
  • the operations of a method or algorithm may reside as one or any combination or set of codes and instructions on a machine readable medium and computer-readable medium,
  • the term “or,” when used in a list of two or more items, means that any one of the listed items may be employed by itself, or any combination of two or more of the listed items may be employed. For example, if a composition is described as containing components A, B, or C, the composition may contain A alone; B alone; C alone; A and B in combination; A and C in combination; B and C in combination; or A, B, and C in combination.
  • “or” as used in a list of items prefaced by “at least one of’ indicates a disjunctive list such that, for example, a list of “at least one of A, B, or C” means A or B or C or AB or AC or BC or ABC (that is A and B and C) or any of these in any combination thereof.
  • the term “substantially” is defined as largely but not necessarily wholly what is specified (and includes what is specified; for example, substantially 90 degrees includes 90 degrees and substantially parallel includes parallel), as understood by a person of ordinary skill in the art. In any disclosed implementations, the term “substantially” may be substituted with “within [a percentage] of’ what is specified, where the percentage includes .1, 1, 5, or 10 percent.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente divulgation concerne des systèmes, des procédés et des dispositifs de communication sans fil qui prennent en charge la gestion d'une compression et d'indications et de compression d'un message d'informations de commande de liaison montante (UCI) basse priorité (LP) qui est multiplexé avec un message UCI haute priorité (HP) dans un système de communication sans fil. En particulier, un équipement utilisateur (UE) détermine une indication de compression pour le message d'UCI LP, code l'indication de compression conjointement avec la charge utile d'UCI HP, et code séparément la charge utile d'UCI LP. La charge utile d'UCI LP codée est multiplexée avec l'indication de compression codée conjointement et la charge utile d'UCI HP dans une transmission de liaison montante vers une station de base. L'indication de compression comprend des informations relatives au fait que les UCI LP sont compressées ou non et au mode de compression de celles-ci. La station de base décode l'indication de compression et décode ensuite le message d'UCI LP sur la base de l'indication de compression.
PCT/US2022/072472 2021-05-21 2022-05-20 Multiplexage d'informations de commande de liaison montante haute priorité et basse priorité (uci) sur une transmission en liaison montante WO2022246468A1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP22734455.3A EP4342225A1 (fr) 2021-05-21 2022-05-20 Multiplexage d'informations de commande de liaison montante haute priorité et basse priorité (uci) sur une transmission en liaison montante
CN202280035003.1A CN117337596A (zh) 2021-05-21 2022-05-20 在上行链路传输上复用高优先级和低优先级上行链路控制信息（uci）

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US202163191895P 2021-05-21 2021-05-21
US63/191,895 2021-05-21
US17/664,088 US20220377723A1 (en) 2021-05-21 2022-05-19 Multiplexing high priority and low priority uplink control information (uci) on an uplink transmission
US17/664,088 2022-05-19

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WO2022246468A1 true WO2022246468A1 (fr) 2022-11-24

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Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
ERICSSON: "Intra-UE Multiplexing/Prioritization Enhancements for IIoT/URLLC", vol. RAN WG1, no. e-Meeting; 20210512 - 20210520, 12 May 2021 (2021-05-12), XP052010680, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_105-e/Docs/R1-2104220.zip R1-2104220 Intra-UE Multiplexing Prioritization Enhancements for IIoT URLLC.docx> [retrieved on 20210512] *
MODERATOR (OPPO): "Summary#1 of email thread [104-e-NR-R17-IIoT_URLLC-04]", vol. RAN WG1, no. e-Meeting; 20210125 - 20210205, 8 February 2021 (2021-02-08), XP051977631, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_104-e/Docs/R1-2101842.zip R1-2101842 summary#1 of [104-e-NR-R17-IIoT_URLLC-04] -final.docx> [retrieved on 20210208] *
OPPO: "Enhancements on intra-UE multiplexing/prioritization", vol. RAN WG1, no. e-Meeting; 20201026 - 20201113, 24 October 2020 (2020-10-24), XP051946612, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_103-e/Docs/R1-2008282.zip R1-2008282.docx> [retrieved on 20201024] *
ZTE: "Discussion on enhanced intra-UE multiplexing", vol. RAN WG1, no. e-Meeting; 20210412 - 20210420, 7 April 2021 (2021-04-07), XP052177202, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_104b-e/Docs/R1-2102496.zip R1-2102496 Discussion on enhanced intra-UE multiplexing.docx> [retrieved on 20210407] *

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