WO2022088126A1 - Transmission d'informations par sélection et détection de mode dans des communications par multiplexage de moment angulaire orbital - Google Patents

Transmission d'informations par sélection et détection de mode dans des communications par multiplexage de moment angulaire orbital Download PDF

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Publication number
WO2022088126A1
WO2022088126A1 PCT/CN2020/125629 CN2020125629W WO2022088126A1 WO 2022088126 A1 WO2022088126 A1 WO 2022088126A1 CN 2020125629 W CN2020125629 W CN 2020125629W WO 2022088126 A1 WO2022088126 A1 WO 2022088126A1
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WIPO (PCT)
Prior art keywords
multiplexing modes
angular momentum
orbital angular
subsets
momentum multiplexing
Prior art date
Application number
PCT/CN2020/125629
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English (en)
Inventor
Min Huang
Yu Zhang
Chao Wei
Hao Xu
Wei XI
Jing Dai
Qiaoyu Li
Liangming WU
Chenxi HAO
Kangqi LIU
Rui Hu
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Qualcomm Incorporated
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Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2020/125629 priority Critical patent/WO2022088126A1/fr
Publication of WO2022088126A1 publication Critical patent/WO2022088126A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J14/00—Optical multiplex systems
    • H04J14/04—Mode multiplex systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/11—Arrangements specific to free-space transmission, i.e. transmission through air or vacuum
    • H04B10/112—Line-of-sight transmission over an extended range

Definitions

  • the following relates to wireless communications, including information transmission by mode selection and detection in orbital angular momentum multiplexing communications.
  • Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) .
  • Examples of such multiple-access systems include fourth generation (4G) systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems which may be referred to as New Radio (NR) systems.
  • 4G systems such as Long Term Evolution (LTE) systems, LTE-Advanced (LTE-A) systems, or LTE-A Pro systems
  • 5G systems which may be referred to as New Radio (NR) systems.
  • a wireless multiple-access communications system may include one or more base stations or one or more network access nodes, each simultaneously supporting communication for multiple communication devices, which may be otherwise known as user equipment (UE) . Efficient techniques for transmission of information in such systems is desirable in order to enhance system throughput and reliability.
  • UE user equipment
  • a transmitting device e.g., a user equipment (UE) , base station, integrated access and backhaul (IAB) node, relay node, etc.
  • a receiving device e.g., a UE, base station, IAB node, relay node, etc.
  • a subset that includes one or more OAM multiplexing modes of the set of OAM multiplexing modes may be used for a communication between the transmitting device and receiving device.
  • each of a plurality of different subsets of OAM multiplexing modes may be mapped to one or more information bits, and the transmitting device may select the subset of OAM multiplexing modes based on information bits to be transmitted and the subset of OAM multiplexing modes that is mapped to a first subset of the information bits.
  • the receiving device may detect which subset of OAM multiplexing modes is used for a transmission from the transmitting device, and decode the first subset of the information bits based on the detected subset and the one or more bits that are mapped thereto.
  • a method for wireless communication at a receiving device may include receiving, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, identifying that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes, and decoding a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes.
  • the apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory.
  • the instructions may be executable by the processor to cause the apparatus to receive, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, identify that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes, and decode a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes.
  • the apparatus may include means for receiving, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, means for identifying that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes, and means for decoding a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes.
  • a non-transitory computer-readable medium storing code for wireless communication at a receiving device is described.
  • the code may include instructions executable by a processor to receive, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, identify that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes, and decode a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes.
  • the two or more subsets of OAM multiplexing modes may be identified based on one or more of a number of OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, a set of patterns of concurrent OAM multiplexing modes for communications between the transmitting device and the receiving device, or any combinations thereof.
  • the identifying may include operations, features, means, or instructions for measuring one or more channel parameters of a set of multiple subsets of antenna ports, each subset of the set of multiple subsets of antenna ports associated with a subset of the two or more subsets of OAM multiplexing modes and determining, based on the one or more channel parameters, that the first transmission uses the first subset of the two or more subsets of OAM multiplexing modes.
  • a number of usable OAM multiplexing modes of the set of available OAM multiplexing modes at the transmitting device may be larger than a number of supported OAM multiplexing modes at the receiving device.
  • the decoding may include operations, features, means, or instructions for identifying a first subset of the set of information bits based on the first transmission using the first subset of the two or more subsets of OAM multiplexing modes and identifying a second subset of the set of information bits based on a signal that is modulated on one or more OAM multiplexing signals of the first subset of OAM multiplexing modes.
  • the first subset of the set of information bits, and the second subset of the set of information bits may be from a same codeword, from different codewords, from a same transport block, or from different transport blocks.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for communicating, to the transmitting device, a list of OAM multiplexing modes, one or more groups of OAM multiplexing modes, or any combinations thereof, that are unfavorable for communications between the transmitting device and the receiving device.
  • the set of available OAM multiplexing modes does not include OAM multiplexing modes from the list of OAM multiplexing modes.
  • the two or more subsets of OAM multiplexing modes do not include OAM multiplexing modes from the one or more groups of OAM multiplexing modes.
  • each of the two or more subsets of OAM multiplexing modes may be associated with a value of a first subset of the set of information bits.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining a first value of one or more bits of the set of information bits based on a mapping between the first subset of the two or more subsets of OAM multiplexing modes and the first value of the one or more bits of the set of information bits.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining that the first subset of the two or more subsets of OAM multiplexing modes is used for the first transmission based on a received signal strength at a first subset of antenna ports associated with the first subset of the two or more subsets of OAM multiplexing modes relative to other subsets of antenna ports associated with other of the two or more subsets of OAM multiplexing modes.
  • the two or more subsets of OAM multiplexing modes include combinations of individual OAM multiplexing modes of the set of available OAM multiplexing modes.
  • the receiving may include operations, features, means, or instructions for receiving, from the transmitting device, a first number of OAM multiplexing modes in the set of available OAM multiplexing modes and a second number of OAM multiplexing modes that are concurrently used for at least the first transmission.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying a mapping between each of the two or more subsets of OAM multiplexing modes and a value of a first subset of the set of information bits, where the two or more subsets are associated with the first number of OAM multiplexing modes and the second number of OAM multiplexing modes.
  • the receiving may include operations, features, means, or instructions for receiving, from the transmitting device, information associated with a third number of unusable subsets of OAM multiplexing modes of the set of available OAM multiplexing modes.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying a mapping between each of the two or more subsets of OAM multiplexing modes and a value of a first subset of the set of information bits, where the two or more subsets are associated with the first number of OAM multiplexing modes, the second number of OAM multiplexing modes, and the third number of unusable subsets of OAM multiplexing modes.
  • the two or more subsets of OAM multiplexing modes do not include the unusable subsets of OAM multiplexing modes.
  • At least one subset of the two or more subsets of OAM multiplexing modes may have a different number of OAM multiplexing modes than at least one other subset of the two or more subsets of OAM multiplexing modes.
  • the receiving may include operations, features, means, or instructions for receiving, from the transmitting device for each subset of the two or more subsets of OAM multiplexing modes, an identical first number of OAM multiplexing modes of the set of available OAM multiplexing modes and a different second number of concurrently used OAM multiplexing modes.
  • the receiving may include operations, features, means, or instructions for receiving, from the transmitting device, an indication of one or more unusable subsets of the two or more subsets of OAM multiplexing modes and removing the one or more unusable subsets from the two or more subsets of OAM multiplexing modes to identify remaining subsets of OAM multiplexing modes.
  • each subset of the remaining subsets of OAM multiplexing modes is mapped to a value of the first subset of the set of information bits.
  • the receiving may include operations, features, means, or instructions for receiving, from the transmitting device, two or more patterns of OAM multiplexing modes that are each associated with a different subset of the two or more subsets of OAM multiplexing modes.
  • each pattern of the two or more patterns of OAM multiplexing modes is mapped to a different value of a first subset of the set of information bits.
  • the identifying may include operations, features, means, or instructions for detecting a first pattern of OAM multiplexing modes that is used for the first transmission and identifying a first value of the first subset of the set of information bits based on the detected first pattern.
  • the receiving includes receiving configuration information from the transmitting device via one or more of radio resource control (RRC) signaling, a medium access control (MAC) control element (CE) , physical layer signaling, or any combinations thereof.
  • RRC radio resource control
  • MAC medium access control
  • CE control element
  • the configuration information may be provided periodically or aperiodically.
  • a method for wireless communication at a transmitting device may include transmitting, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, identifying a set of information bits to be communicated to the receiving device in a first transmission, selecting a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits, and transmitting, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the apparatus may include a processor, memory in electronic communication with the processor, and instructions stored in the memory.
  • the instructions may be executable by the processor to cause the apparatus to transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, identify a set of information bits to be communicated to the receiving device in a first transmission, select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits, and transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the apparatus may include means for transmitting, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, means for identifying a set of information bits to be communicated to the receiving device in a first transmission, means for selecting a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits, and means for transmitting, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • a non-transitory computer-readable medium storing code for wireless communication at a transmitting device is described.
  • the code may include instructions executable by a processor to transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, identify a set of information bits to be communicated to the receiving device in a first transmission, select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits, and transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the two or more subsets of OAM multiplexing modes may be identified based on one or more of a number of OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, a set of patterns of concurrent OAM multiplexing modes for communications between the transmitting device and the receiving device, or any combinations thereof.
  • a number of usable OAM multiplexing modes of the set of available OAM multiplexing modes at the transmitting device may be larger than a number of supported OAM modes at the receiving device.
  • the transmitting may include operations, features, means, or instructions for modulating a portion of the set of information bits on one or more OAM multiplexing signals of the first subset of the two or more subsets of OAM multiplexing modes.
  • a first subset of the set of information bits is indicated based on the selected subset of the two or more subsets of OAM multiplexing modes, and the modulating provides a second subset of the set of information bits, and the first and second subsets of the set of information bits may be from a same codeword, from different codewords, from a same transport block, or from different transport blocks.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, from the receiving device, a list of OAM multiplexing modes, one or more groups of OAM multiplexing modes, or any combinations thereof, that are unfavorable for communications between the transmitting device and the receiving device.
  • the set of available OAM multiplexing modes does not include OAM multiplexing modes from the list of OAM multiplexing modes.
  • the two or more subsets of OAM multiplexing modes do not include OAM multiplexing modes from the one or more groups of OAM multiplexing modes.
  • each of the two or more subsets of OAM multiplexing modes are associated with a value of the one or more bits of the set of information bits.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for determining the first subset of the two or more subsets of OAM multiplexing modes based on a mapping between the two or more subsets of OAM multiplexing modes and values of the one or more bits of the set of information bits.
  • the two or more subsets of OAM multiplexing modes include combinations of individual OAM multiplexing modes of the set of available OAM multiplexing modes.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to the receiving device, a first number of OAM multiplexing modes in the set of available OAM multiplexing modes and a second number of OAM multiplexing modes that are concurrently used for at least the first transmission. Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to the receiving device, information associated with a third number of unusable subsets of OAM multiplexing modes of the set of available OAM multiplexing modes.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying a mapping between each of the two or more subsets of OAM multiplexing modes and a value of the one or more bits of the set of information bits, where the two or more subsets are associated with the first number of OAM multiplexing modes and the second number of OAM multiplexing modes.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for receiving, from the transmitting device, information associated with the third number of unusable subsets of OAM multiplexing modes of the set of available OAM multiplexing modes.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for identifying a mapping between each of the two or more subsets of OAM multiplexing modes and a value of the one or more bits of the set of information bits, where the two or more subsets are associated with the first number of OAM multiplexing modes, the second number of OAM multiplexing modes and the third number of unusable subsets of OAM multiplexing modes.
  • the two or more subsets of OAM multiplexing modes do not include the unusable subsets of OAM multiplexing modes.
  • At least one subset of the two or more subsets of OAM multiplexing modes may have a different number of OAM multiplexing modes than at least one other subset of the two or more subsets of OAM multiplexing modes.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to the receiving device for each subset of the two or more subsets of OAM multiplexing modes, an identical first number of OAM multiplexing modes of the set of available OAM multiplexing modes and a different second number of concurrently used OAM multiplexing modes.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to the receiving device, an indication of one or more unusable subsets of the two or more subsets of OAM multiplexing modes and removing the one or more unusable subsets from the two or more subsets of OAM multiplexing modes to identify remaining subsets of OAM multiplexing modes.
  • each subset of the remaining subsets of OAM multiplexing modes is mapped to a value of the one or more bits of the set of information bits.
  • Some examples of the method, apparatuses, and non-transitory computer-readable medium described herein may further include operations, features, means, or instructions for transmitting, to the receiving device, two or more patterns of OAM multiplexing modes that are each associated with a different subset of the two or more subsets of the set of available OAM multiplexing modes.
  • each pattern of the two or more patterns of OAM multiplexing modes may be mapped to different values of the one or more bits of the set of information bits.
  • a first pattern of OAM multiplexing modes may be used for the first transmission, and a first value of the one or more bits of the set of information bits is indicated based on the first pattern.
  • configuration information that indicates the set of available OAM multiplexing modes and the two or more subsets of OAM multiplexing modes may be transmitted to the receiving device via one or more of RRC signaling, a MAC-CE, physical layer signaling, or any combinations thereof.
  • the configuration information may be transmitted periodically or aperiodically.
  • FIG. 1 illustrates an example of a system for wireless communications that supports information transmission by mode selection and detection in orbital angular momentum (OAM) multiplexing communications in accordance with aspects of the present disclosure.
  • OFAM orbital angular momentum
  • FIG. 2 illustrates an example of a portion of a wireless communications system that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • FIG. 3 illustrates an example of a spiral phase plate OAM configuration that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • FIG. 4 illustrates an example of a uniform circular array OAM configuration that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • FIG. 5 illustrates an example of a bit mapping between subsets of OAM modes and information bits that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • FIG. 6 illustrates an example of a process flow that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • FIGs. 7 and 8 show block diagrams of devices that support information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • FIG. 9 shows a block diagram of a communications manager that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • FIG. 10 shows a diagram of a system including a user equipment (UE) that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • UE user equipment
  • FIG. 11 shows a diagram of a system including a base station that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • FIGs. 12 through 29 show flowcharts illustrating methods that support information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • wireless devices such as base stations or user equipment (UE) , or both, may communicate directionally, for example, using beams to orient communication signals over one or more directions.
  • the wireless devices may communicate using OAM beams, which, in addition to providing signal directionality, may also provide an additional dimension for signal or channel multiplexing.
  • such an additional dimension may include a state or a mode of the OAM beam, where different states or modes of OAM beams may be orthogonal to each other. As such, different OAM states or modes may be multiplexed together to increase the capacity of an OAM link.
  • a wireless device may use spiral phase plate (SPP) or uniform circular array (UCA) based methodologies to generate an OAM beam.
  • SPP spiral phase plate
  • UCA uniform circular array
  • a transmitting device and a receiving device may have different or the same capabilities for a number or pattern of different concurrent OAM modes that are supported, and different subsets of a total number of available OAM modes may be used for communications.
  • techniques may employ the selection of usable OAM modes at the transmitting device and the detection at the receiving device to improve the throughput of OAM-based communication.
  • a wireless device may identify a set of OAM multiplexing modes that are available for communications.
  • a number of different subsets of OAM modes may be identified, and each of the different subsets of OAM modes may be mapped to one or more information bits.
  • the transmitting device may identify a first subset of information bits that are to be transmitted, and select a first subset of OAM multiplexing modes that is mapped to the first subset of the information bits.
  • the receiving device may detect which subset of OAM multiplexing modes is used for the transmission from the transmitting device, and decode the first subset of the information bits based on the detected subset and the one or more bits that are mapped thereto.
  • the described techniques may be implemented to realize enhanced communications bandwidth between wireless devices transmitting or receiving OAM beams. For example, based on implementing the described OAM mode subset selection and detection techniques, the wireless device may communicate a first subset of information bits based on the subset of OAM modes used for a transmission and a second subset of bits based on information that is modulated on the OAM signals of the transmission. Such techniques may result in the wireless device being able to communicate (e.g., transmit or receive) additional bits in an OAM communication, thus increasing the amount of information transferred relative to a system that does not use such techniques.
  • the wireless device may experience increased reliability and a greater likelihood of successful communication. Additionally, based on implementing the use of selected subsets of OAM modes to indicate one or more information bits, wireless devices may achieve higher data rates and denser communication networks.
  • aspects of the disclosure are initially described in the context of wireless communications systems and OAM multiplexing configurations. Aspects of the disclosure are further illustrated by and described with reference to apparatus diagrams, system diagrams, process flows, and flowcharts that relate to information transmission by mode selection and detection in OAM multiplexing communications.
  • FIG. 1 illustrates an example of a wireless communications system 100 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the wireless communications system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130.
  • the wireless communications system 100 may be a Long Term Evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network.
  • LTE Long Term Evolution
  • LTE-A LTE-Advanced
  • LTE-A Pro LTE-A Pro
  • NR New Radio
  • the wireless communications system 100 may support enhanced broadband communications, ultra-reliable (e.g., mission critical) communications, low latency communications, communications with low-cost and low-complexity devices, or any combination thereof.
  • ultra-reliable e.g., mission critical
  • the base stations 105 may be dispersed throughout a geographic area to form the wireless communications system 100 and may be devices in different forms or having different capabilities.
  • the base stations 105 and the UEs 115 may wirelessly communicate via one or more communication links 125.
  • Each base station 105 may provide a coverage area 110 over which the UEs 115 and the base station 105 may establish one or more communication links 125.
  • the coverage area 110 may be an example of a geographic area over which a base station 105 and a UE 115 may support the communication of signals according to one or more radio access technologies.
  • the UEs 115 may be dispersed throughout a coverage area 110 of the wireless communications system 100, and each UE 115 may be stationary, or mobile, or both at different times.
  • the UEs 115 may be devices in different forms or having different capabilities. Some example UEs 115 are illustrated in FIG. 1.
  • the UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115, the base stations 105, or network equipment (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment) , as shown in FIG. 1.
  • network equipment e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network equipment
  • the base stations 105 may communicate with the core network 130, or with one another, or both.
  • the base stations 105 may interface with the core network 130 through one or more backhaul links 120 (e.g., via an S1, N2, N3, or other interface) .
  • the base stations 105 may communicate with one another over the backhaul links 120 (e.g., via an X2, Xn, or other interface) either directly (e.g., directly between base stations 105) , or indirectly (e.g., via core network 130) , or both.
  • the backhaul links 120 may be or include one or more wireless links.
  • One or more of the base stations 105 described herein may include or may be referred to by a person having ordinary skill in the art as a base transceiver station, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB) , a next-generation NodeB or a giga-NodeB (either of which may be referred to as a gNB) , a Home NodeB, a Home eNodeB, or other suitable terminology.
  • a base transceiver station a radio base station
  • an access point a radio transceiver
  • a NodeB an eNodeB (eNB)
  • eNB eNodeB
  • a next-generation NodeB or a giga-NodeB either of which may be referred to as a gNB
  • gNB giga-NodeB
  • a UE 115 may include or may be referred to as a mobile device, a wireless device, a remote device, a handheld device, or a subscriber device, or some other suitable terminology, where the “device” may also be referred to as a unit, a station, a terminal, or a client, among other examples.
  • a UE 115 may also include or may be referred to as a personal electronic device such as a cellular phone, a personal digital assistant (PDA) , a tablet computer, a laptop computer, or a personal computer.
  • PDA personal digital assistant
  • a UE 115 may include or be referred to as a wireless local loop (WLL) station, an Internet of Things (IoT) device, an Internet of Everything (IoE) device, or a machine type communications (MTC) device, among other examples, which may be implemented in various objects such as appliances, or vehicles, meters, among other examples.
  • WLL wireless local loop
  • IoT Internet of Things
  • IoE Internet of Everything
  • MTC machine type communications
  • the UEs 115 described herein may be able to communicate with various types of devices, such as other UEs 115 that may sometimes act as relays as well as the base stations 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
  • devices such as other UEs 115 that may sometimes act as relays as well as the base stations 105 and the network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, among other examples, as shown in FIG. 1.
  • the UEs 115 and the base stations 105 may wirelessly communicate with one another via one or more communication links 125 over one or more carriers.
  • the term “carrier” may refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting the communication links 125.
  • a carrier used for a communication link 125 may include a portion of a radio frequency spectrum band (e.g., a bandwidth part (BWP) ) that is operated according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR, 4G, 5G, 6G, etc. ) .
  • BWP bandwidth part
  • Each physical layer channel may carry acquisition signaling (e.g., synchronization signals, system information) , control signaling that coordinates operation for the carrier, user data, or other signaling.
  • the wireless communications system 100 may support communication with a UE 115 using carrier aggregation or multi-carrier operation.
  • a UE 115 may be configured with multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration.
  • Carrier aggregation may be used with both frequency division duplexing (FDD) and time division duplexing (TDD) component carriers.
  • FDD frequency division duplexing
  • TDD time division duplexing
  • a carrier may also have acquisition signaling or control signaling that coordinates operations for other carriers.
  • a carrier may be associated with a frequency channel (e.g., an evolved universal mobile telecommunication system terrestrial radio access (E-UTRA) absolute radio frequency channel number (EARFCN) ) and may be positioned according to a channel raster for discovery by the UEs 115.
  • E-UTRA evolved universal mobile telecommunication system terrestrial radio access
  • a carrier may be operated in a standalone mode where initial acquisition and connection may be conducted by the UEs 115 via the carrier, or the carrier may be operated in a non-standalone mode where a connection is anchored using a different carrier (e.g., of the same or a different radio access technology) .
  • the communication links 125 shown in the wireless communications system 100 may include uplink transmissions from a UE 115 to a base station 105, or downlink transmissions from a base station 105 to a UE 115.
  • Carriers may carry downlink or uplink communications (e.g., in an FDD mode) or may be configured to carry downlink and uplink communications (e.g., in a TDD mode) .
  • a carrier may be associated with a particular bandwidth of the radio frequency spectrum, and in some examples the carrier bandwidth may be referred to as a “system bandwidth” of the carrier or the wireless communications system 100.
  • the carrier bandwidth may be one of a number of determined bandwidths for carriers of a particular radio access technology (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 megahertz (MHz) ) .
  • Devices of the wireless communications system 100 e.g., the base stations 105, the UEs 115, or both
  • the wireless communications system 100 may include base stations 105 or UEs 115 that support simultaneous communications via carriers associated with multiple carrier bandwidths.
  • each served UE 115 may be configured for operating over portions (e.g., a sub-band, a BWP) or all of a carrier bandwidth.
  • Signal waveforms transmitted over a carrier may be made up of multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM) ) .
  • MCM multi-carrier modulation
  • a resource element may include one symbol period (e.g., a duration of one modulation symbol) and one subcarrier, where the symbol period and subcarrier spacing are inversely related.
  • the number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the coding rate of the modulation scheme, or both) .
  • a wireless communications resource may refer to a combination of a radio frequency spectrum resource, a time resource, and a spatial resource (e.g., spatial layers or beams) , and the use of multiple spatial layers may further increase the data rate or data integrity for communications with a UE 115.
  • One or more numerologies for a carrier may be supported, where a numerology may include a subcarrier spacing ( ⁇ f) and a cyclic prefix.
  • a carrier may be divided into one or more BWPs having the same or different numerologies.
  • a UE 115 may be configured with multiple BWPs.
  • a single BWP for a carrier may be active at a given time and communications for the UE 115 may be restricted to one or more active BWPs.
  • Time intervals of a communications resource may be organized according to radio frames each having a specified duration (e.g., 10 milliseconds (ms) ) .
  • Each radio frame may be identified by a system frame number (SFN) (e.g., ranging from 0 to 1023) .
  • SFN system frame number
  • Each frame may include multiple consecutively numbered subframes or slots, and each subframe or slot may have the same duration.
  • a frame may be divided (e.g., in the time domain) into subframes, and each subframe may be further divided into a number of slots.
  • each frame may include a variable number of slots, and the number of slots may depend on subcarrier spacing.
  • Each slot may include a number of symbol periods (e.g., depending on the length of the cyclic prefix prepended to each symbol period) .
  • a slot may further be divided into multiple mini-slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N f ) sampling periods. The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.
  • a subframe, a slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communications system 100 and may be referred to as a transmission time interval (TTI) .
  • TTI duration e.g., the number of symbol periods in a TTI
  • the smallest scheduling unit of the wireless communications system 100 may be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs) ) .
  • Physical channels may be multiplexed on a carrier according to various techniques.
  • a physical control channel and a physical data channel may be multiplexed on a downlink carrier, for example, using one or more of time division multiplexing (TDM) techniques, frequency division multiplexing (FDM) techniques, or hybrid TDM-FDM techniques.
  • a control region e.g., a control resource set (CORESET)
  • CORESET control resource set
  • a control region for a physical control channel may be defined by a number of symbol periods and may extend across the system bandwidth or a subset of the system bandwidth of the carrier.
  • One or more control regions (e.g., CORESETs) may be configured for a set of the UEs 115.
  • one or more of the UEs 115 may monitor or search control regions for control information according to one or more search space sets, and each search space set may include one or multiple control channel candidates in one or more aggregation levels arranged in a cascaded manner.
  • An aggregation level for a control channel candidate may refer to a number of control channel resources (e.g., control channel elements (CCEs) ) associated with encoded information for a control information format having a given payload size.
  • Search space sets may include common search space sets configured for sending control information to multiple UEs 115 and UE-specific search space sets for sending control information to a specific UE 115.
  • Each base station 105 may provide communication coverage via one or more cells, for example a macro cell, a small cell, a hot spot, or other types of cells, or any combination thereof.
  • the term “cell” may refer to a logical communication entity used for communication with a base station 105 (e.g., over a carrier) and may be associated with an identifier for distinguishing neighboring cells (e.g., a physical cell identifier (PCID) , a virtual cell identifier (VCID) , or others) .
  • a cell may also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) over which the logical communication entity operates.
  • Such cells may range from smaller areas (e.g., a structure, a subset of structure) to larger areas depending on various factors such as the capabilities of the base station 105.
  • a cell may be or include a building, a subset of a building, or exterior spaces between or overlapping with geographic coverage areas 110, among other examples.
  • a macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by the UEs 115 with service subscriptions with the network provider supporting the macro cell.
  • a small cell may be associated with a lower-powered base station 105, as compared with a macro cell, and a small cell may operate in the same or different (e.g., licensed, unlicensed) frequency bands as macro cells.
  • Small cells may provide unrestricted access to the UEs 115 with service subscriptions with the network provider or may provide restricted access to the UEs 115 having an association with the small cell (e.g., the UEs 115 in a closed subscriber group (CSG) , the UEs 115 associated with users in a home or office) .
  • a base station 105 may support one or multiple cells and may also support communications over the one or more cells using one or multiple component carriers.
  • a carrier may support multiple cells, and different cells may be configured according to different protocol types (e.g., MTC, narrowband IoT (NB-IoT) , enhanced mobile broadband (eMBB) ) that may provide access for different types of devices.
  • protocol types e.g., MTC, narrowband IoT (NB-IoT) , enhanced mobile broadband (eMBB)
  • NB-IoT narrowband IoT
  • eMBB enhanced mobile broadband
  • a base station 105 may be movable and therefore provide communication coverage for a moving geographic coverage area 110.
  • different geographic coverage areas 110 associated with different technologies may overlap, but the different geographic coverage areas 110 may be supported by the same base station 105.
  • the overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105.
  • the wireless communications system 100 may include, for example, a heterogeneous network in which different types of the base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.
  • the wireless communications system 100 may support synchronous or asynchronous operation.
  • the base stations 105 may have similar frame timings, and transmissions from different base stations 105 may be approximately aligned in time.
  • the base stations 105 may have different frame timings, and transmissions from different base stations 105 may, in some examples, not be aligned in time.
  • the techniques described herein may be used for either synchronous or asynchronous operations.
  • Some UEs 115 may be low cost or low complexity devices and may provide for automated communication between machines (e.g., via Machine-to-Machine (M2M) communication) .
  • M2M communication or MTC may refer to data communication technologies that allow devices to communicate with one another or a base station 105 without human intervention.
  • M2M communication or MTC may include communications from devices that integrate sensors or meters to measure or capture information and relay such information to a central server or application program that makes use of the information or presents the information to humans interacting with the application program.
  • Some UEs 115 may be designed to collect information or enable automated behavior of machines or other devices. Examples of applications for MTC devices include smart metering, inventory monitoring, water level monitoring, equipment monitoring, healthcare monitoring, wildlife monitoring, weather and geological event monitoring, fleet management and tracking, remote security sensing, physical access control, and transaction-based business charging.
  • Some UEs 115 may be configured to employ operating modes that reduce power consumption, such as half-duplex communications (e.g., a mode that supports one-way communication via transmission or reception, but not transmission and reception simultaneously) .
  • half-duplex communications may be performed at a reduced peak rate.
  • Other power conservation techniques for the UEs 115 include entering a power saving deep sleep mode when not engaging in active communications, operating over a limited bandwidth (e.g., according to narrowband communications) , or a combination of these techniques.
  • some UEs 115 may be configured for operation using a narrowband protocol type that is associated with a defined portion or range (e.g., set of subcarriers or resource blocks (RBs) ) within a carrier, within a guard-band of a carrier, or outside of a carrier.
  • a narrowband protocol type that is associated with a defined portion or range (e.g., set of subcarriers or resource blocks (RBs) ) within a carrier, within a guard-band of a carrier, or outside of a carrier.
  • the wireless communications system 100 may be configured to support ultra-reliable communications or low-latency communications, or various combinations thereof.
  • the wireless communications system 100 may be configured to support ultra-reliable low-latency communications (URLLC) or mission critical communications.
  • the UEs 115 may be designed to support ultra-reliable, low-latency, or critical functions (e.g., mission critical functions) .
  • Ultra-reliable communications may include private communication or group communication and may be supported by one or more mission critical services such as mission critical push-to-talk (MCPTT) , mission critical video (MCVideo) , or mission critical data (MCData) .
  • MCPTT mission critical push-to-talk
  • MCVideo mission critical video
  • MCData mission critical data
  • Support for mission critical functions may include prioritization of services, and mission critical services may be used for public safety or general commercial applications.
  • the terms ultra-reliable, low-latency, mission critical, and ultra-reliable low-latency may be used interchangeably herein.
  • a UE 115 may also be able to communicate directly with other UEs 115 over a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol) .
  • D2D device-to-device
  • P2P peer-to-peer
  • One or more UEs 115 utilizing D2D communications may be within the geographic coverage area 110 of a base station 105.
  • Other UEs 115 in such a group may be outside the geographic coverage area 110 of a base station 105 or be otherwise unable to receive transmissions from a base station 105.
  • groups of the UEs 115 communicating via D2D communications may utilize a one-to-many (1: M) system in which each UE 115 transmits to every other UE 115 in the group.
  • a base station 105 facilitates the scheduling of resources for D2D communications. In other cases, D2D communications are carried out between the UEs 115 without the involvement of a base station 105.
  • the D2D communication link 135 may be an example of a communication channel, such as a sidelink communication channel, between vehicles (e.g., UEs 115) .
  • vehicles may communicate using vehicle-to-everything (V2X) communications, vehicle-to-vehicle (V2V) communications, or some combination of these.
  • V2X vehicle-to-everything
  • V2V vehicle-to-vehicle
  • a vehicle may signal information related to traffic conditions, signal scheduling, weather, safety, emergencies, or any other information relevant to a V2X system.
  • vehicles in a V2X system may communicate with roadside infrastructure, such as roadside units, or with the network via one or more network nodes (e.g., base stations 105) using vehicle-to-network (V2N) communications, or with both.
  • V2N vehicle-to-network
  • the core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions.
  • the core network 130 may be an evolved packet core (EPC) or 5G core (5GC) , or other core system, which may include at least one control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management function (AMF) ) and at least one user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) .
  • EPC evolved packet core
  • 5GC 5G core
  • MME mobility management entity
  • AMF access and mobility management function
  • S-GW serving gateway
  • PDN gateway Packet Data Network gateway
  • UPF user plane function
  • the control plane entity may manage non-access stratum (NAS) functions such as mobility, authentication, and bearer management for the UEs 115 served by the base stations 105 associated with the core network 130.
  • NAS non-access stratum
  • User IP packets may be transferred through the user plane entity, which may provide IP address allocation as well as other functions.
  • the user plane entity may be connected to the network operators IP services 150.
  • the network operators IP services 150 may include access to the Internet, Intranet (s) , an IP Multimedia Subsystem (IMS) , or a Packet-Switched Streaming Service.
  • Some of the network devices may include subcomponents such as an access network entity 140, which may be an example of an access node controller (ANC) .
  • Each access network entity 140 may communicate with the UEs 115 through one or more other access network transmission entities 145, which may be referred to as radio heads, smart radio heads, or transmission/reception points (TRPs) .
  • Each access network transmission entity 145 may include one or more antenna panels.
  • various functions of each access network entity 140 or base station 105 may be distributed across various network devices (e.g., radio heads and ANCs) or consolidated into a single network device (e.g., a base station 105) .
  • the wireless communications system 100 may operate using one or more frequency bands, sometimes in the range of 300 megahertz (MHz) to 300 gigahertz (GHz) .
  • the region from 300 MHz to 3 GHz is known as the ultra-high frequency (UHF) region or decimeter band because the wavelengths range from approximately one decimeter to one meter in length.
  • UHF waves may be blocked or redirected by buildings and environmental features, but the waves may penetrate structures sufficiently for a macro cell to provide service to the UEs 115 located indoors.
  • the transmission of UHF waves may be associated with smaller antennas and shorter ranges (e.g., less than 100 kilometers) compared to transmission using the smaller frequencies and longer waves of the high frequency (HF) or very high frequency (VHF) portion of the spectrum below 300 MHz.
  • HF high frequency
  • VHF very high frequency
  • the wireless communications system 100 may also operate in a super high frequency (SHF) region using frequency bands from 3 GHz to 30 GHz, also known as the centimeter band, or in an extremely high frequency (EHF) region of the spectrum (e.g., from 30 GHz to 300 GHz) , also known as the millimeter band.
  • SHF super high frequency
  • EHF extremely high frequency
  • the wireless communications system 100 may support millimeter wave (mmW) communications between the UEs 115 and the base stations 105, and EHF antennas of the respective devices may be smaller and more closely spaced than UHF antennas. In some examples, this may facilitate use of antenna arrays within a device.
  • mmW millimeter wave
  • the propagation of EHF transmissions may be subject to even greater atmospheric attenuation and shorter range than SHF or UHF transmissions.
  • the techniques disclosed herein may be employed across transmissions that use one or more different frequency regions, and designated use of bands across these frequency regions may differ by country or regulating body.
  • the wireless communications system 100 may utilize both licensed and unlicensed radio frequency spectrum bands.
  • the wireless communications system 100 may employ License Assisted Access (LAA) , LTE-Unlicensed (LTE-U) radio access technology, or NR technology in an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band.
  • LAA License Assisted Access
  • LTE-U LTE-Unlicensed
  • NR NR technology
  • an unlicensed band such as the 5 GHz industrial, scientific, and medical (ISM) band.
  • devices such as the base stations 105 and the UEs 115 may employ carrier sensing for collision detection and avoidance.
  • operations in unlicensed bands may be based on a carrier aggregation configuration in conjunction with component carriers operating in a licensed band (e.g., LAA) .
  • Operations in unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, among other examples.
  • a base station 105 or a UE 115 may be equipped with multiple antennas, which may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming.
  • the antennas of a base station 105 or a UE 115 may be located within one or more antenna arrays or antenna panels, which may support MIMO operations or transmit or receive beamforming.
  • one or more base station antennas or antenna arrays may be co-located at an antenna assembly, such as an antenna tower.
  • antennas or antenna arrays associated with a base station 105 may be located in diverse geographic locations.
  • a base station 105 may have an antenna array with a number of rows and columns of antenna ports that the base station 105 may use to support beamforming of communications with a UE 115.
  • a UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations.
  • an antenna panel may support radio frequency beamforming for a signal transmitted via an antenna port.
  • the base stations 105 or the UEs 115 may use MIMO communications to exploit multipath signal propagation and increase the spectral efficiency by transmitting or receiving multiple signals via different spatial layers. Such techniques may be referred to as spatial multiplexing.
  • the multiple signals may, for example, be transmitted by the transmitting device via different antennas or different combinations of antennas. Likewise, the multiple signals may be received by the receiving device via different antennas or different combinations of antennas.
  • Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords) .
  • Different spatial layers may be associated with different antenna ports used for channel measurement and reporting.
  • MIMO techniques include single-user MIMO (SU-MIMO) , where multiple spatial layers are transmitted to the same receiving device, and multiple-user MIMO (MU-MIMO) , where multiple spatial layers are transmitted to multiple devices.
  • SU-MIMO single-user MIMO
  • Beamforming which may also be referred to as spatial filtering, directional transmission, or directional reception, is a signal processing technique that may be used at a transmitting device or a receiving device (e.g., a base station 105, a UE 115) to shape or steer an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting device and the receiving device.
  • Beamforming may be achieved by combining the signals communicated via antenna elements of an antenna array such that some signals propagating at particular orientations with respect to an antenna array experience constructive interference while others experience destructive interference.
  • the adjustment of signals communicated via the antenna elements may include a transmitting device or a receiving device applying amplitude offsets, phase offsets, or both to signals carried via the antenna elements associated with the device.
  • the adjustments associated with each of the antenna elements may be defined by a beamforming weight set associated with a particular orientation (e.g., with respect to the antenna array of the transmitting device or receiving device, or with respect to some other orientation) .
  • a base station 105 or a UE 115 may use beam sweeping techniques as part of beam forming operations.
  • a base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to conduct beamforming operations for directional communications with a UE 115.
  • Some signals e.g., synchronization signals, reference signals, beam selection signals, or other control signals
  • the base station 105 may transmit a signal according to different beamforming weight sets associated with different directions of transmission.
  • Transmissions in different beam directions may be used to identify (e.g., by a transmitting device, such as a base station 105, or by a receiving device, such as a UE 115) a beam direction for later transmission or reception by the base station 105.
  • a transmitting device such as a base station 105
  • a receiving device such as a UE 115
  • Some signals may be transmitted by a base station 105 in a single beam direction (e.g., a direction associated with the receiving device, such as a UE 115) .
  • the beam direction associated with transmissions along a single beam direction may be determined based on a signal that was transmitted in one or more beam directions.
  • a UE 115 may receive one or more of the signals transmitted by the base station 105 in different directions and may report to the base station 105 an indication of the signal that the UE 115 received with a highest signal quality or an otherwise acceptable signal quality.
  • transmissions by a device may be performed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate a combined beam for transmission (e.g., from a base station 105 to a UE 115) .
  • the UE 115 may report feedback that indicates precoding weights for one or more beam directions, and the feedback may correspond to a configured number of beams across a system bandwidth or one or more sub-bands.
  • the base station 105 may transmit a reference signal (e.g., a cell-specific reference signal (CRS) , a channel state information reference signal (CSI-RS) ) , which may be precoded or unprecoded.
  • a reference signal e.g., a cell-specific reference signal (CRS) , a channel state information reference signal (CSI-RS)
  • CRS cell-specific reference signal
  • CSI-RS channel state information reference signal
  • the UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook) .
  • PMI precoding matrix indicator
  • codebook-based feedback e.g., a multi-panel type codebook, a linear combination type codebook, a port selection type codebook
  • a UE 115 may employ similar techniques for transmitting signals multiple times in different directions (e.g., for identifying a beam direction for subsequent transmission or reception by the UE 115) or for transmitting a signal in a single direction (e.g., for transmitting data to a receiving device) .
  • a receiving device may try multiple receive configurations (e.g., directional listening) when receiving various signals from the base station 105, such as synchronization signals, reference signals, beam selection signals, or other control signals.
  • receive configurations e.g., directional listening
  • a receiving device may try multiple receive directions by receiving via different antenna subarrays, by processing received signals according to different antenna subarrays, by receiving according to different receive beamforming weight sets (e.g., different directional listening weight sets) applied to signals received at multiple antenna elements of an antenna array, or by processing received signals according to different receive beamforming weight sets applied to signals received at multiple antenna elements of an antenna array, any of which may be referred to as “listening” according to different receive configurations or receive directions.
  • receive beamforming weight sets e.g., different directional listening weight sets
  • a receiving device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal) .
  • the single receive configuration may be aligned in a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have a highest signal strength, highest signal-to-noise ratio (SNR) , or otherwise acceptable signal quality based on listening according to multiple beam directions) .
  • SNR signal-to-noise ratio
  • the wireless communications system 100 may be a packet-based network that operates according to a layered protocol stack.
  • communications at the bearer or Packet Data Convergence Protocol (PDCP) layer may be IP-based.
  • a Radio Link Control (RLC) layer may perform packet segmentation and reassembly to communicate over logical channels.
  • RLC Radio Link Control
  • a Medium Access Control (MAC) layer may perform priority handling and multiplexing of logical channels into transport channels.
  • the MAC layer may also use error detection techniques, error correction techniques, or both to support retransmissions at the MAC layer to improve link efficiency.
  • the Radio Resource Control (RRC) protocol layer may provide establishment, configuration, and maintenance of an RRC connection between a UE 115 and a base station 105 or a core network 130 supporting radio bearers for user plane data.
  • RRC Radio Resource Control
  • transport channels may be mapped to physical channels.
  • the UEs 115 and the base stations 105 may support retransmissions of data to increase the likelihood that data is received successfully.
  • Hybrid automatic repeat request (HARQ) feedback is one technique for increasing the likelihood that data is received correctly over a communication link 125.
  • HARQ may include a combination of error detection (e.g., using a cyclic redundancy check (CRC) ) , forward error correction (FEC) , and retransmission (e.g., automatic repeat request (ARQ) ) .
  • FEC forward error correction
  • ARQ automatic repeat request
  • HARQ may improve throughput at the MAC layer in poor radio conditions (e.g., low signal-to-noise conditions) .
  • a device may support same-slot HARQ feedback, where the device may provide HARQ feedback in a specific slot for data received in a previous symbol in the slot. In other cases, the device may provide HARQ feedback in a subsequent slot, or according to some other time interval.
  • the wireless communications system 100 may be an example of or otherwise support an OAM-based communications system and a base station 105 or a UE 115 may communicate via OAM beams.
  • a base station 105 or a UE 115 may generate and steer an OAM beam based on selecting a set of antenna elements from a planar array of antenna elements (e.g., a planar array on the base station 105 or the UE 115 that may be used for MIMO communications) based on which antenna elements fall within a determined area on the planar array associated with a UCA for OAM communications.
  • one or more base stations 105 or UEs 115 may include components that provide for SPP-based OAM communications.
  • a number of different subsets of a total number of available OAM modes may be used for communications.
  • techniques may employ the selection of a subset of OAM modes at the transmitting device, and the detection of the selected subset at the receiving device, to improve the throughput of OAM-based communication.
  • a base station 105 or UE 115 may identify a set of OAM multiplexing modes that are available for communications. Within the set of OAM multiplexing modes, a number of different subsets of OAM modes may be identified, and each of the different subsets of OAM modes may be mapped to one or more information bits.
  • the transmitting device may identify a first subset of information bits that are to be transmitted, and select a first subset of OAM multiplexing modes that is mapped to the first subset of the information bits.
  • the receiving device may detect which subset of OAM multiplexing modes is used for the transmission from the transmitting device, and decode the first subset of the information bits based on the detected subset and the one or more bits that are mapped thereto.
  • FIG. 2 illustrates an example of a wireless communications system 200 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • wireless communications system 200 may implement aspects of wireless communications system 100.
  • the wireless communications system 200 may illustrate communication between a base station 105-a and a UE 115-a, which may be examples of corresponding devices described herein.
  • the wireless communications system 200 may support OAM-based communications and, as such, the base station 105-a and the UE 115-a may transmit or receive OAM beams 210 over a communication link 205 (e.g., an OAM link 205) within a geographic coverage area 110-a.
  • a communication link 205 e.g., an OAM link 205
  • the base station 105-a or the UE 115-a may support OAM-based communication by using the OAM of electromagnetic waves to distinguish between different signals.
  • the OAM of electromagnetic waves may be different than the spin angular momentum (SAM) of electromagnetic waves, and both may contribute to the overall angular momentum of an electromagnetic wave as defined in quantum mechanics by Equation 1, shown below.
  • the SAM of the electromagnetic wave may be associated with the polarization of the electromagnetic wave.
  • an electromagnetic wave may be associated with different polarizations (e.g., circular polarizations) , such as left and right. Accordingly, the SAM of the electromagnetic wave may have multiple (e.g., two) degrees of freedom.
  • the OAM of the electromagnetic wave may be associated with a field spatial distribution of the electromagnetic wave, which may be in the form of a helical or twisted wavefront shape (e.g., in examples in which a light beam can be associated with a helical or twisted wavefront) .
  • an electromagnetic wave e.g., a light beam
  • a helical mode which may also be referred to as an OAM mode
  • such helical modes may be characterized by a wavefront that is shaped as a helix with an optical vortex in the center (e.g., at the beam axis) , where each helical mode is associated with a different helical wavefront structure.
  • the helical modes may be defined or referred to by a mode index l, where a sign of the mode index l corresponds to a “handedness” (e.g., left or right) of the helix (or helices) and a magnitude of the mode index l (e.g.,
  • a sign of the mode index l corresponds to a “handedness” (e.g., left or right) of the helix (or helices)
  • a magnitude of the mode index l e.g.,
  • the electromagnetic wave is not helical and the wavefronts of the electromagnetic wave are multiple disconnected surfaces (e.g., the electromagnetic wave is a sequence of parallel planes) .
  • the electromagnetic wave may propagate in a right-handed sense (e.g., has a right circular polarization or may be understood as having a clockwise circular polarization) and the wavefront of the electromagnetic wave may be shaped as a single helical surface with a step length equal to a wavelength ⁇ of the electromagnetic wave.
  • the phase delay over one revolution of the electromagnetic wave may be equal to 2 ⁇ .
  • the electromagnetic wave may propagate in a left-handed sense (e.g., has a left circular polarization or may be understood as having a counter-clockwise circular polarization) and the wavefront of the electromagnetic wave may be also be shaped as a single helical surface with a step length equal to the wavelength ⁇ of the electromagnetic wave.
  • the phase delay over one revolution of the electromagnetic wave may be equal to -2 ⁇ .
  • the electromagnetic wave may propagate in either a right-handed sense (if +2) or in a left-handed sense (if -2) and the wavefront of the electromagnetic wave may include two distinct but interleaved helical surfaces.
  • the step length of each helical surface may be equal to ⁇ /2.
  • the phase delay over one revolution of the electromagnetic wave may be equal to ⁇ 4 ⁇ .
  • a mode-l electromagnetic wave may propagate in either a right-handed sense or a left-handed sense (depending on the sign of l) and may include l distinct but interleaved helical surfaces with a step length of each helical surface equal to ⁇ /
  • the phase delay over one revolution of the electromagnetic wave may be equal to 2l ⁇ .
  • the OAM of the electromagnetic wave e.g., L as defined in Equation 1
  • L as defined in Equation 1
  • the OAM mode index l of an electromagnetic wave may correspond to or otherwise function as (e.g., be defined as) an additional dimension for signal or channel multiplexing.
  • each OAM mode or state (of which there may be infinite) , may function similarly (e.g., or equivalently) to a communication channel, such as a sub-channel.
  • an OAM mode or state may correspond to a communication channel, and vice versa.
  • the base station 105-a or the UE 115-a may communicate separate signals using electromagnetic waves having different OAM modes or states similarly to how the base station 105-a or the UE 115-a may transmit separate signals over different communication channels.
  • such use of the OAM modes or states of an electromagnetic wave to carry different signals may be referred to as the use of OAM beams 210.
  • electromagnetic waves with different OAM modes may be mutually orthogonal to each other (e.g., in a Hilbert sense, in which a space may include an infinite set of axes and sequences may become infinite by way of always having another coordinate direction in which next elements of the sequence can go) .
  • orthogonal OAM modes or states may correspond to orthogonal communication channels (e.g., orthogonal sequences transmitted over a communication channel) and, based on the potentially infinite number of OAM modes or states, the wireless communications system 200 employing the use of OAM beams 210 may theoretically achieve infinite capacity.
  • an infinite number of OAM states or modes may be twisted together for multiplexing and the capacity of the OAM link 205 can approach infinity while preserving orthogonality between signals carried by different OAM modes (e.g., indices) .
  • OAM modes e.g., indices
  • due to non-ideal factors e.g., Tx/Rx axial or position placement error, propagation divergence, and the like
  • there may be crosstalk among OAM modes at the receiver and thus a reduced number of concurrent OAM modes may be implemented between wireless devices (e.g., two or four concurrent OAM modes) .
  • the base station 105-a or the UE 115-a may generate such OAM beams 210 using SPP or UCA methodologies, such as discussed with reference to FIGs. 3 and 4.
  • a relatively large number of OAM modes may be configurable at the UE 115-a and base station 105-a, which may be referred to as a set of available OAM modes.
  • one or more of the UE 115-a or base station 105-a may be capable of supporting only a subset of the set of available OAM modes for a particular communication.
  • the inter-mode interference may be significant and, when SNR is low, allocating transmission power to a relatively small number of OAM modes can achieve higher throughput than spreading the transmit power to a large number of mutual-interfered OAM modes.
  • a reduced number of concurrent OAM modes may be more desirable than a larger number of concurrent OAM modes in such scenarios.
  • the OAM receiver may have a reduced processing capability so that it can only support a limited number of OAM mode demodulation.
  • techniques may employ the selection of usable OAM modes at the transmitter and the detection at the receiver to improve the throughput of OAM-based communication.
  • a number of different subsets of a total number of available OAM modes may be used for communications.
  • techniques may employ the selection of a subset of OAM modes at the transmitting device (e.g., base station 105-a or UE 115-a) , and the detection of the selected subset at the receiving device (e.g., base station 105-a or UE 115-a) , to improve the throughput of OAM-based communication.
  • the base station 105-a or UE 115-a may identify a set of OAM multiplexing modes that are available for communications.
  • a number of different subsets of OAM modes may be identified, and each of the different subsets of OAM modes may be mapped to one or more information bits.
  • the transmitting device may identify a first subset of information bits that are to be transmitted, and select a first subset of OAM multiplexing modes that is mapped to the first subset of the information bits.
  • the receiving device may detect which subset of OAM multiplexing modes is used for the transmission from the transmitting device, and decode the first subset of the information bits based on the detected subset and the one or more bits that are mapped thereto.
  • the base station 105-a or the UE 115-a, or both may transmit or receive the OAM beam 210 to or from other wireless devices, such as peer devices.
  • the base station 105-a may transmit or receive an OAM beam 210 to or from another base station 105
  • the UE 115-a may transmit or receive an OAM beam 210 to or from another UE 115 by implementing the described techniques without exceeding the scope of the present disclosure.
  • techniques as discussed herein may be used in communications between IAB nodes, relay nodes, access points, other wireless devices, or any combinations thereof.
  • FIG. 3 illustrates an example of a SPP OAM configuration 300 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • SPP OAM configuration 300 may implement aspects of wireless communications system 100 or 200.
  • a transmitting device e.g., UE or base station
  • a receiving device e.g., UE or base station
  • receiver OAM components 310 may be included in a transmitting device.
  • UE or base station may include transmitter OAM components 305 and a receiving device (e.g., UE or base station) may include receiver OAM components 310.
  • an SPP 325 may be associated with geometric constraints and may be able to generate an electromagnetic wave associated with a single OAM mode.
  • the wireless device may use one SPP 325 to generate one OAM mode of an OAM beam 335.
  • a wireless device may implement a different SPP 325 for each OAM mode of an OAM beam 335.
  • a first electromagnetic wave 315-a may be provided to a first aperture 320-a and a first SPP 325-a
  • a second electromagnetic wave 315-b may be provided to a second aperture 320-b and a second SPP 325-b.
  • a beam splitter/combiner 330 may combine the output of the first SPP 325-a and the second SPP 325-b to generate OAM beam 335.
  • the receiver OAM components 310 may receive the OAM beam 335 as a beam splitter/combiner 340 to provide instances of the OAM beam 335 to a third SPP 325-c and a fourth SPP 325-d that provide output to a first receiver aperture 320-c and a second receiver aperture 320-d, respectively.
  • separate SPPs 325-a may thus be used for each OAM mode, and the number of SPPs 325 at a device may constrain the number of usable OAM modes.
  • wireless devices may also use a UCA methodology for OAM communications, an example of which is discussed with reference to FIG. 4.
  • FIG. 4 illustrates an example of a UCA OAM configuration 400 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • UCA OAM configuration 400 may implement aspects of wireless communications system 100 or 200.
  • a transmitting device e.g., UE or base station
  • a receiving device e.g., UE or base station
  • one or both of the OAM transmitter UCA antennas 405 or the OAM receiver UCA antennas 410 may be implemented as a planar array of antenna elements which may be an example of or otherwise function as a (massive or holographic) MIMO array or an intelligent surface.
  • the transmitting device may identify a set of antenna elements 415 of the planar array that form a transmitter UCA, and a receiving device may identify a set of antenna elements 445 of the planar array that form a receiver UCA.
  • the OAM transmitter may apply a weight 435 to each of the selected antenna elements 415 based on the OAM mode index l of the transmitted OAM beam and one or more spatial parameters associated with each antenna element.
  • the OAM transmitter may load a weight 435 to each antenna element 415 on the UCA based on an angle 440 measured between a reference line on the UCA (e.g., the x-axis of the plane on which the UCA is located, where the origin is at the center of the UCA) and the antenna element, the OAM mode index l, and i (e.g., for complex-valued weights, which may alternatively be denoted as j in some cases) .
  • a reference line on the UCA e.g., the x-axis of the plane on which the UCA is located, where the origin is at the center of the UCA
  • i e.g., for complex-valued weights, which may alternatively be denoted as j in some cases
  • the weight for an antenna element n may be proportional to where is equal to the angle 440 measured between the reference line on the UCA and the antenna element n.
  • each set of weights 420 –430 provides a beamformed port that is equivalent OAM mode l.
  • the receiving device may have receive antenna elements 445 equipped in a circle.
  • the channel matrix may be denoted from each transmit antenna to each receive antenna as H, and then for the beamformed channel matrix any two columns of are orthogonal which means the beamformed ports have no crosstalk. This may allow OAM-based communication to realize high-level spatial multiplexing degree efficiently.
  • the eigen-based transmit precoding weights and receive combining weights of UCA-based OAM are constantly equal to a discrete Fourier transform (DFT) matrix, which is irrelevant to communication parameters (e.g., distance, aperture size and carrier frequency) , and thus UCA-based OAM may be implemented at relatively low cost.
  • DFT discrete Fourier transform
  • the receiving device may test multiple different OAM modes to determine the OAM mode that was used in a transmission (e.g., based on whether a particular OAM mode yields a successfully demodulated transmission) , which may be used to identify one or more information bits of a transmission, as discussed with reference to FIG. 5.
  • FIG. 5 illustrates an example of a bit mapping between subsets of OAM modes and information bits 500 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • bit mapping between subsets of OAM modes and information bits 500 may implement aspects of wireless communications system 100 or 200 that may employ OAM multiplexing such as discussed with reference to FIGs. 3 or 4.
  • a transmitting device and a receiving device may be configured with a set of available OAM multiplexing modes, which may include a first number of candidate OAM modes 505 with a size of the mode group that is one, and a second number of candidate OAM modes 510 with a size of mode group that is two.
  • Each OAM mode group 515 may be an example of a subset of a set of available OAM modes, and may be associated with information bits 520 according to a mapping such as illustrated in FIG. 5. It is noted that the mapping of FIG. 5 is provided for purposes of discussion and illustration, and that numerous other mappings between OAM mode groups and information bits are possible and within the scope of the disclosure.
  • the OAM transmitter may select an OAM mode or a group of OAM modes, which are unknown to the OAM receiver, and different mode selection represents different information bits in accordance with the configured mapping (e.g., the mapping illustrated in FIG. 5) .
  • the OAM receiver detects which OAM modes are used and then retrieves the transmitted information bits based on the configured mapping.
  • the transmitting device may indicate a list of candidate OAM modes and the number or a set of patterns of simultaneously used OAM modes to the receiving device (e.g., through configuration signaling or control signaling, such as via RRC, DCI, a MAC-CE, etc. ) .
  • the receiving device may report a list of OAM mode groups that are not recommended (e.g., the modes in these groups are mutually interfered at the receiving device) .
  • the transmitting device may optionally configure a list of OAM mode groups that are not simultaneously used in data transmission.
  • the transmitting device may transmit signals in a group (with the indicated number) of, or one of, the indicated subsets of OAM modes.
  • each choice of OAM mode selection (including individual mode selection and mode pattern selection) from OAM mode groups 515 represents the value of a certain number of information bits 520.
  • the receiving device detects the used OAM modes, and then retrieves the information bits 520 represented by the OAM mode group 515 selection. For example, the receiving device may detect the received signal strength at an OAM mode group 515 to judge whether this mode is used or not.
  • information may be modulated based on individual OAM mode selection.
  • the transmitting device may indicate the number and contents of M candidate OAM modes (e.g., the first and second numbers of candidate OAM modes 505 and 510 in the example of FIG. 5) and the number of N used OAM modes (i.e. the size of mode group) to the receiver.
  • M candidate OAM modes e.g., the first and second numbers of candidate OAM modes 505 and 510 in the example of FIG. 5
  • N used OAM modes i.e. the size of mode group
  • the transmitting device may indicate the number and contents of L unusable mode groups (e.g., based on the modes in these groups having strong mutual interference) .
  • the number of represented information bits is Each of OAM mode selection thus represents a certain value of N b bits.
  • the number of usable mode groups may be and thus the number of represented information bits is
  • the bit mapping rule may be: the mode group with lower-order mode is used to represent the smaller value of bits until the largest value of bits; the remaining mode groups can all represent the largest value of bits (e.g., selecting mode group 0/2 representing “000” , mode group 0/3 representing “001” , mode group 0/4 representing “010” , mode group 0/5 representing “011” , mode group 1/3 representing “100” , mode group 1/4 representing “101” , mode group 1/5 representing “110” , mode group 2/4 or 2/5 or 3/5 representing “111” ) .
  • the transmitting device may select a mode group out of the usable mode groups and transmit signals in these OAM modes, and the receiving device may detect the used OAM modes and retrieve the N b information bits represented by the OAM mode selection.
  • the number of N used OAM modes can have multiple values, and the transmitting device may indicate the number and contents of M candidate OAM modes and the number of ⁇ N 1 , N 2 , ... ⁇ used OAM modes (i.e. the size of mode group) to the receiving device.
  • the transmitting device may indicate the number and contents of L unusable mode groups (e.g., when the modes in these groups have strong mutual interference) .
  • L the number of unusable mode groups
  • there remains usable mode groups such as illustrated in the table of FIG. 5.
  • the number of represented information bits is and each subset of OAM modes represents a certain value of N b bits.
  • the number of usable mode groups and the number of represented information bits is
  • information bits may be modulated by a pattern of the OAM mode selection.
  • the transmitting device may indicate the number and contents of M candidate OAM mode groups to the receiving device.
  • the number of represented information bits is with each OAM mode group selection representing a certain value of N b bits.
  • M 2
  • the number of represented information bits is thus
  • the bit mapping rule may be that the mode group with lower-order mode is used to represent the smaller value of bits, which in this example provides that selecting mode group 0/2/4 represents ‘0’ , and mode group 1/3/5 represents ‘1’ .
  • the transmitting device may selects a mode group out of the M candidate mode groups and transmit signals in the OAM modes of this group.
  • the receiving device may detect the used OAM mode group and retrieve the N b information bits represented by the OAM mode group selection.
  • the indication from the OAM transmitting device to the OAM receiving device, or the indication from the OAM receiving device to the OAM transmitting device can be via RRC signaling, MAC CE, physical-layer signaling (such as downlink control information (DCI) , uplink control information (UCI) , sidelink control information (SCI) , etc. ) , or any combinations thereof.
  • DCI downlink control information
  • UCI uplink control information
  • SCI sidelink control information
  • These signals may be transmitted periodically or aperiodically (e.g., event triggered based on a channel state or the system parameters (such as communication distance) ) .
  • a first part of the information bits may be transmitted from a transmitting device to a receiving device by the mode selection and detection, and a second part of the information bits (e.g., Part 2) may be transmitted within these selected OAM modes.
  • These two parts of information bits which may be examples of subsets of a set of information bits, can be from the same codeword (or transport block) or different codewords (or transport blocks) .
  • the indication message between OAM communication transmitting device and OAM receiving device may include, for example, a list of candidate OAM modes and the number or the patterns of used OAM modes, a list of OAM mode groups that are not simultaneously used, or combinations thereof.
  • the OAM receiving device may transmit a list of OAM mode groups that are not recommended (e.g., based on receiving device physical parameters, processing power, etc. ) , which the transmitting device may receive and use for determination of a mapping between subsets of OAM modes and one or more information bits.
  • FIG. 6 illustrates an example of a process flow 600 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • process flow 600 may implement aspects of wireless communications system 100 or 200 of FIGs. 1–2 and OAM techniques such as discussed with reference to one or more of FIGs. 3–5.
  • the process flow 600 may illustrate OAM-based communication between a receiving device 605 and a transmitting device 610, which may be examples of other devices described herein, such as base stations 105 or UEs 115.
  • Alternative examples of the process flow may be implemented, in which some features are performed in a different order than described or are not performed at all.
  • operations may include additional features not mentioned below, or further operations may be added.
  • the transmitting device 610 optionally may determine an OAM configuration for communications with the receiving device 605.
  • the OAM configuration may include a list of candidate OAM modes (e.g., a set of available OAM modes) and the number or the patterns of used OAM modes (e.g., a plurality of subsets of the set of available OAM modes) .
  • the OAM configuration may include a list of OAM mode groups that are not simultaneously used.
  • the transmitting device 610 may transmit the OAM configuration to the receiving device 605.
  • the OAM configuration may be transmitted using control channel signaling (e.g., on a PDCCH) , in RRC signaling, in a MAC-CE, through other signaling, or any combinations thereof.
  • the receiving device 605 optionally may determine one or more unusable or unfavorable OAM modes or groups of modes. In some aspects, such a determination may be made based on the received OAM configuration from the transmitting device 610 and one or more OAM modes or groups of modes that have mutual interference. In some aspects, additionally or alternatively, such a determination may be made based on a number of available antenna elements at the receiving device 605, a processing capability of the receiving device 605, or combinations thereof.
  • the receiving device 605 may transmit an unusable beam indication to the transmitting device 610 that indicates the one or more unusable or unfavorable OAM modes or groups of modes.
  • the transmitting device 610 may determine a set of available OAM modes and available subsets of OAM modes. The determination may be made, for example, based on the OAM configuration (e.g., number and content of available OAM modes, OAM groups, etc. ) , and the indicated unusable or unfavorable OAM modes or groups of OAM modes.
  • the transmitting device 610 may transmit a OAM set/subset message to the receiving device, which may be used to indicate a mapping between different subsets of OAM modes and one or more information bits.
  • the transmitting device 610 may identify information bits that are to be transmitted to the receiving device 605.
  • the information bits may be shared channel data or control channel information that is to be transmitted to the receiving device 605.
  • the transmitting device 610 may determine a mapping of a first subset of the information bits to a first subset of OAM modes. In some cases, the mapping may be based on the indicated set of available OAM modes and available subsets of OAM modes, and one or more information bits that are associated with each of the available subsets of OAM modes.
  • the transmitting device 610 may select a first subset of OAM modes to indicate the first subset of information bits. The selection of the first subset of OAM modes may be based on the determined mapping, as discussed herein.
  • the transmitting device 610 may modulate a second subset of information bits onto the OAM beam that is to be transmitted to the receiving device. Such modulation of information bits onto transmitted signals may be performed according to established techniques for modulating information onto a carrier.
  • the transmitting device 610 may transmit the OAM beam to the receiving device 605.
  • the receiving device 605 may receive the OAM beam and identify the OAM mode that was used for the OAM transmission. In some cases, the receiving device 605 may measure a signal strength associated with a number of subsets of OAM modes and identify the used subset of OAM modes based on a subset with a highest signal strength.
  • the receiving device 605 may decode the first subset of information bits based on the identified subset of OAM modes that was used for the OAM transmission. In some cases, the receiving device 605 may use a mapping between different subsets of OAM modes and one or more information bits, as discussed herein.
  • the receiving device 605 may demodulate the second subset of information bits from the received OAM beam, and decode the second subset of information bits. The receiving device 605 may combine the first subset of information bits and the second subset of information bits to obtain the set of information bits that were transmitted by the transmitting device 610.
  • the set of information bits may be a codeword or transport block that is transmitted from the transmitting device 610 to the receiving device 605.
  • FIG. 7 shows a block diagram 700 of a device 705 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the device 705 may be an example of aspects of a UE 115 or base station 105 as described herein.
  • the device 705 may include a receiver 710, a communications manager 715, and a transmitter 720.
  • the device 705 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • Receiver 710 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to information transmission by mode selection and detection in OAM multiplexing communications, etc. ) . Information may be passed on to other components of the device 705.
  • the receiver 710 may be an example of aspects of the transceiver 1020 or 1120 as described with reference to FIGs. 10 and 11.
  • the receiver 710 may utilize a single antenna or a set of antennas.
  • the communications manager 715 may receive, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, identify that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes, and decode a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes.
  • the communications manager 715 may also transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, identify a set of information bits to be communicated to the receiving device in a first transmission, select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits, and transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the communications manager 715 may be an example of aspects of the communications manager 1010 or 1110 as described herein.
  • the communications manager 715 may be implemented in hardware, code (e.g., software or firmware) executed by a processor, or any combination thereof. If implemented in code executed by a processor, the functions of the communications manager 715, or its sub-components may be executed by a general-purpose processor, a DSP, an application-specific integrated circuit (ASIC) , a FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described in the present disclosure.
  • code e.g., software or firmware
  • ASIC application-specific integrated circuit
  • the communications manager 715 may be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations by one or more physical components.
  • the communications manager 715, or its sub-components may be a separate and distinct component in accordance with various aspects of the present disclosure.
  • the communications manager 715, or its sub-components may be combined with one or more other hardware components, including but not limited to an input/output (I/O) component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or a combination thereof in accordance with various aspects of the present disclosure.
  • I/O input/output
  • Transmitter 720 may transmit signals generated by other components of the device 705.
  • the transmitter 720 may be collocated with a receiver 710 in a transceiver module.
  • the transmitter 720 may be an example of aspects of the transceiver 1020 or 1120 as described with reference to FIGs. 10 and 11.
  • the transmitter 720 may utilize a single antenna or a set of antennas.
  • FIG. 8 shows a block diagram 800 of a device 805 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the device 805 may be an example of aspects of a device 705, a UE 115, or a base station 105 as described herein.
  • the device 805 may include a receiver 810, a communications manager 815, and a transmitter 845.
  • the device 805 may also include a processor. Each of these components may be in communication with one another (e.g., via one or more buses) .
  • Receiver 810 may receive information such as packets, user data, or control information associated with various information channels (e.g., control channels, data channels, and information related to information transmission by mode selection and detection in OAM multiplexing communications, etc. ) . Information may be passed on to other components of the device 805.
  • the receiver 810 may be an example of aspects of the transceiver 1020 or 1120 as described with reference to FIGs. 10 and 11.
  • the receiver 810 may utilize a single antenna or a set of antennas.
  • the communications manager 815 may be an example of aspects of the communications manager 715 as described herein.
  • the communications manager 815 may include an OAM subset manager 820, an OAM mode detection manager 825, an information bit decoder 830, an information bit encoder 835, and an OAM transmission manager 840.
  • the communications manager 815 may be an example of aspects of the communications manager 1010 or 1110 as described herein.
  • the OAM subset manager 820 may receive, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the OAM mode detection manager 825 may identify that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes.
  • the information bit decoder 830 may decode a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes.
  • the OAM subset manager 820 may transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the information bit encoder 835 may identify a set of information bits to be communicated to the receiving device in a first transmission and select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits.
  • the OAM transmission manager 840 may transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • Transmitter 845 may transmit signals generated by other components of the device 805.
  • the transmitter 845 may be collocated with a receiver 810 in a transceiver module.
  • the transmitter 845 may be an example of aspects of the transceiver 1020 or 1120 as described with reference to FIGs. 10 and 11.
  • the transmitter 845 may utilize a single antenna or a set of antennas.
  • FIG. 9 shows a block diagram 900 of a communications manager 905 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the communications manager 905 may be an example of aspects of a communications manager 715, a communications manager 815, or a communications manager 1010 described herein.
  • the communications manager 905 may include an OAM subset manager 910, an OAM mode detection manager 915, an information bit decoder 920, an OAM mode reporting manager 925, an OAM mode measurement manager 930, a mapping manager 935, a configuration manager 940, an information bit encoder 945, and an OAM transmission manager 950.
  • Each of these modules may communicate, directly or indirectly, with one another (e.g., via one or more buses) .
  • the OAM subset manager 910 may receive, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device. In some examples, the OAM subset manager 910 may receive, from the transmitting device, a first number of OAM multiplexing modes in the set of available OAM multiplexing modes and a second number of OAM multiplexing modes that are concurrently used for at least the first transmission.
  • the OAM subset manager 910 may receive, from the transmitting device for each subset of the two or more subsets of OAM multiplexing modes, an identical first number of OAM multiplexing modes of the set of available OAM multiplexing modes and a different second number of concurrently used OAM multiplexing modes.
  • the OAM subset manager 910 may receive, from the transmitting device, an indication of one or more unusable subsets of the two or more subsets of OAM multiplexing modes. In some examples, the OAM subset manager 910 may remove the one or more unusable subsets from the two or more subsets of OAM multiplexing modes to identify remaining subsets of OAM multiplexing modes.
  • the OAM subset manager 910 may receive, from the transmitting device, two or more patterns of OAM multiplexing modes that are each associated with a different subset of the two or more subsets of OAM multiplexing modes.
  • the OAM subset manager 910 may transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the OAM subset manager 910 may transmit, to the receiving device, a first number of OAM multiplexing modes in the set of available OAM multiplexing modes and a second number of OAM multiplexing modes that are concurrently used for at least the first transmission.
  • the OAM subset manager 910 may transmit, to the receiving device, information associated with a third number of unusable subsets of OAM multiplexing modes of the set of available OAM multiplexing modes.
  • the OAM subset manager 910 may transmit, to the receiving device for each subset of the two or more subsets of OAM multiplexing modes, an identical first number of OAM multiplexing modes of the set of available OAM multiplexing modes and a different second number of concurrently used OAM multiplexing modes. In some examples, the OAM subset manager 910 may transmit, to the receiving device, an indication of one or more unusable subsets of the two or more subsets of OAM multiplexing modes. In some examples, the OAM subset manager 910 may remove the one or more unusable subsets from the two or more subsets of OAM multiplexing modes to identify remaining subsets of OAM multiplexing modes.
  • the OAM subset manager 910 may transmit, to the receiving device, two or more patterns of OAM multiplexing modes that are each associated with a different subset of the two or more subsets of the set of available OAM multiplexing modes.
  • the two or more subsets of OAM multiplexing modes are identified based on one or more of a number of OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, a set of patterns of concurrent OAM multiplexing modes for communications between the transmitting device and the receiving device, or any combinations thereof.
  • a number of usable OAM multiplexing modes of the set of available OAM multiplexing modes at the transmitting device is larger than a number of supported OAM multiplexing modes at the receiving device.
  • the two or more subsets of OAM multiplexing modes include combinations of individual OAM multiplexing modes of the set of available OAM multiplexing modes.
  • at least one subset of the two or more subsets of OAM multiplexing modes has a different number of OAM multiplexing modes than at least one other subset of the two or more subsets of OAM multiplexing modes.
  • each pattern of the two or more patterns of OAM multiplexing modes is mapped to a different value of a first subset of the set of information bits.
  • a first pattern of OAM multiplexing modes is used for the first transmission, and a first value of the one or more bits of the set of information bits is indicated based on the first pattern.
  • the OAM mode detection manager 915 may identify that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes.
  • the OAM mode detection manager 915 may measure one or more channel parameters of a set of subsets of antenna ports, each subset of the set of subsets of antenna ports associated with a subset of the two or more subsets of OAM multiplexing modes.
  • the OAM mode detection manager 915 may determine, based on the one or more channel parameters, that the first transmission uses the first subset of the two or more subsets of OAM multiplexing modes.
  • the information bit decoder 920 may decode a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes. In some examples, the information bit decoder 920 may identify a first subset of the set of information bits based on the first transmission using the first subset of the two or more subsets of OAM multiplexing modes. In some examples, the information bit decoder 920 may identify a second subset of the set of information bits based on a signal that is modulated on one or more OAM multiplexing signals of the first subset of OAM multiplexing modes.
  • the information bit decoder 920 may determine a first value of one or more bits of the set of information bits based on a mapping between the first subset of the two or more subsets of OAM multiplexing modes and the first value of the one or more bits of the set of information bits.
  • the first subset of the set of information bits, and the second subset of the set of information bits are from a same codeword, from different codewords, from a same transport block, or from different transport blocks.
  • each of the two or more subsets of OAM multiplexing modes is associated with a value of a first subset of the set of information bits.
  • the information bit encoder 945 may identify a set of information bits to be communicated to the receiving device in a first transmission. In some examples, the information bit encoder 945 may select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits. In some examples, the information bit encoder 945 may modulate a portion of the set of information bits on one or more OAM multiplexing signals of the first subset of the two or more subsets of OAM multiplexing modes.
  • a first subset of the set of information bits is indicated based on the selected subset of the two or more subsets of OAM multiplexing modes, and the modulating provides a second subset of the set of information bits, and where the first and second subsets of the set of information bits are from a same codeword, from different codewords, from a same transport block, or from different transport blocks.
  • the OAM transmission manager 950 may transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the OAM mode reporting manager 925 may communicate, to the transmitting device, a list of OAM multiplexing modes, one or more groups of OAM multiplexing modes, or any combinations thereof, that are unfavorable for communications between the transmitting device and the receiving device.
  • the OAM mode reporting manager 925 may receive, from the transmitting device, information associated with the third number of unusable subsets of OAM multiplexing modes of the set of available OAM multiplexing modes. In some cases, the two or more subsets of OAM multiplexing modes do not include OAM multiplexing modes from the one or more groups of OAM multiplexing modes.
  • the OAM mode reporting manager 925 may receive, from the receiving device, a list of OAM multiplexing modes, one or more groups of OAM multiplexing modes, or any combinations thereof, that are unfavorable for communications between the transmitting device and the receiving device.
  • the set of available OAM multiplexing modes does not include OAM multiplexing modes from the list of OAM multiplexing modes.
  • the set of available OAM multiplexing modes does not include OAM multiplexing modes from the list of OAM multiplexing modes.
  • the OAM mode measurement manager 930 may determine that the first subset of the two or more subsets of OAM multiplexing modes is used for the first transmission based on a received signal strength at a first subset of antenna ports associated with the first subset of the two or more subsets of OAM multiplexing modes relative to other subsets of antenna ports associated with other of the two or more subsets of OAM multiplexing modes.
  • the OAM mode measurement manager 930 may detect a first pattern of OAM multiplexing modes that is used for the first transmission.
  • the OAM mode measurement manager 930 may identify a first value of the first subset of the set of information bits based on the detected first pattern.
  • the mapping manager 935 may identify a mapping between each of the two or more subsets of OAM multiplexing modes and a value of a first subset of the set of information bits, where the two or more subsets are associated with the first number of OAM multiplexing modes and the second number of OAM multiplexing modes.
  • the mapping manager 935 may receive, from the transmitting device, information associated with a third number of unusable subsets of OAM multiplexing modes of the set of available OAM multiplexing modes. In some examples, the mapping manager 935 may identify a mapping between each of the two or more subsets of OAM multiplexing modes and a value of a first subset of the set of information bits, where the two or more subsets are associated with the first number of OAM multiplexing modes, the second number of OAM multiplexing modes, and the third number of unusable subsets of OAM multiplexing modes.
  • the mapping manager 935 may determine the first subset of the two or more subsets of OAM multiplexing modes based on a mapping between the two or more subsets of OAM multiplexing modes and values of the one or more bits of the set of information bits. In some examples, the mapping manager 935 may identify a mapping between each of the two or more subsets of OAM multiplexing modes and a value of the one or more bits of the set of information bits, where the two or more subsets are associated with the first number of OAM multiplexing modes and the second number of OAM multiplexing modes.
  • the mapping manager 935 may identify a mapping between each of the two or more subsets of OAM multiplexing modes and a value of the one or more bits of the set of information bits, where the two or more subsets are associated with the first number of OAM multiplexing modes, the second number of OAM multiplexing modes and the third number of unusable subsets of OAM multiplexing modes.
  • the two or more subsets of OAM multiplexing modes do not include the unusable subsets of OAM multiplexing modes. In some cases, each subset of the remaining subsets of OAM multiplexing modes is mapped to a value of the first subset of the set of information bits. In some cases, each of the two or more subsets of OAM multiplexing modes is associated with a value of the one or more bits of the set of information bits.
  • the configuration manager 940 may provide configuration information that indicates the set of available OAM multiplexing modes and the two or more subsets of OAM multiplexing modes is transmitted to the receiving device via one or more of RRC signaling, a MAC-CE, physical layer signaling, or any combinations thereof.
  • the configuration information is provided periodically or aperiodically.
  • FIG. 10 shows a diagram of a system 1000 including a device 1005 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the device 1005 may be an example of or include the components of device 705, device 805, or a UE 115 as described herein.
  • the device 1005 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager 1010, a transceiver 1020, an antenna 1025, memory 1030, a processor 1040, and an I/O controller 1050. These components may be in electronic communication via one or more buses (e.g., bus 1055) .
  • buses e.g., bus 1055
  • the communications manager 1010 may receive, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, identify that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes, and decode a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes.
  • the communications manager 1010 may also transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, identify a set of information bits to be communicated to the receiving device in a first transmission, select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits, and transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • Transceiver 1020 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 1020 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 1020 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.
  • the wireless device may include a single antenna 1025. However, in some cases the device may have more than one antenna 1025, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the memory 1030 may include RAM, ROM, or a combination thereof.
  • the memory 1030 may store computer-readable code 1035 including instructions that, when executed by a processor (e.g., the processor 1040) cause the device to perform various functions described herein.
  • a processor e.g., the processor 1040
  • the memory 1030 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • the processor 1040 may include an intelligent hardware device, (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) .
  • the processor 1040 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 1040.
  • the processor 1040 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1030) to cause the device 1005 to perform various functions (e.g., functions or tasks supporting information transmission by mode selection and detection in OAM multiplexing communications) .
  • the I/O controller 1050 may manage input and output signals for the device 1005.
  • the I/O controller 1050 may also manage peripherals not integrated into the device 1005.
  • the I/O controller 1050 may represent a physical connection or port to an external peripheral.
  • the I/O controller 1050 may utilize an operating system such as or another known operating system.
  • the I/O controller 1050 may represent or interact with a modem, a keyboard, a mouse, a touchscreen, or a similar device.
  • the I/O controller 1050 may be implemented as part of a processor.
  • a user may interact with the device 1005 via the I/O controller 1050 or via hardware components controlled by the I/O controller 1050.
  • the code 1035 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications.
  • the code 1035 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code 1035 may not be directly executable by the processor 1040 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • FIG. 11 shows a diagram of a system 1100 including a device 1105 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the device 1105 may be an example of or include the components of device 705, device 805, or a base station 105 as described herein.
  • the device 1105 may include components for bi-directional voice and data communications including components for transmitting and receiving communications, including a communications manager 1110, a network communications manager 1115, a transceiver 1120, an antenna 1125, memory 1130, a processor 1140, and an inter-station communications manager 1145. These components may be in electronic communication via one or more buses (e.g., bus 1155) .
  • buses e.g., bus 1155
  • the communications manager 1110 may receive, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, identify that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes, and decode a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes.
  • the communications manager 1110 may also transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, identify a set of information bits to be communicated to the receiving device in a first transmission, select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits, and transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • Network communications manager 1115 may manage communications with the core network (e.g., via one or more wired backhaul links) .
  • the network communications manager 1115 may manage the transfer of data communications for client devices, such as one or more UEs 115.
  • Transceiver 1120 may communicate bi-directionally, via one or more antennas, wired, or wireless links as described above.
  • the transceiver 1120 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 1120 may also include a modem to modulate the packets and provide the modulated packets to the antennas for transmission, and to demodulate packets received from the antennas.
  • the wireless device may include a single antenna 1125. However, in some cases the device may have more than one antenna 1125, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the memory 1130 may include RAM, ROM, or a combination thereof.
  • the memory 1130 may store computer-readable code 1135 including instructions that, when executed by a processor (e.g., the processor 1140) cause the device to perform various functions described herein.
  • the memory 1130 may contain, among other things, a BIOS which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • the processor 1140 may include an intelligent hardware device, (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) .
  • the processor 1140 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 1140.
  • the processor 1140 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 1130) to cause the device 1105 to perform various functions (e.g., functions or tasks supporting information transmission by mode selection and detection in OAM multiplexing communications) .
  • Inter-station communications manager 1145 may manage communications with other base station 105, and may include a controller or scheduler for controlling communications with UEs 115 in cooperation with other base stations 105. For example, the inter-station communications manager 1145 may coordinate scheduling for transmissions to UEs 115 for various interference mitigation techniques such as beamforming or joint transmission. In some examples, inter-station communications manager 1145 may provide an X2 interface within an LTE/LTE-A wireless communication network technology to provide communication between base stations 105.
  • the code 1135 may include instructions to implement aspects of the present disclosure, including instructions to support wireless communications.
  • the code 1135 may be stored in a non-transitory computer-readable medium such as system memory or other type of memory. In some cases, the code 1135 may not be directly executable by the processor 1140 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • FIG. 12 shows a flowchart illustrating a method 1200 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 1200 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 1200 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may receive, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 1205 may be performed according to the methods described herein. In some examples, aspects of the operations of 1205 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 1210 may be performed according to the methods described herein. In some examples, aspects of the operations of 1210 may be performed by an OAM mode detection manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may decode a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 1215 may be performed according to the methods described herein. In some examples, aspects of the operations of 1215 may be performed by an information bit decoder as described with reference to FIGs. 7 through 11.
  • FIG. 13 shows a flowchart illustrating a method 1300 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 1300 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 1300 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may receive, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 1305 may be performed according to the methods described herein. In some examples, aspects of the operations of 1305 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may measure one or more channel parameters of multiple subsets of antenna ports, each subset of antenna ports associated with a subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 1310 may be performed according to the methods described herein. In some examples, aspects of the operations of 1310 may be performed by an OAM mode detection manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may determine, based on the one or more channel parameters, that the first transmission uses a first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 1315 may be performed according to the methods described herein. In some examples, aspects of the operations of 1315 may be performed by an OAM mode detection manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may decode a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 1320 may be performed according to the methods described herein. In some examples, aspects of the operations of 1320 may be performed by an information bit decoder as described with reference to FIGs. 7 through 11.
  • FIG. 14 shows a flowchart illustrating a method 1400 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 1400 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 1400 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may receive, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 1405 may be performed according to the methods described herein. In some examples, aspects of the operations of 1405 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 1410 may be performed according to the methods described herein. In some examples, aspects of the operations of 1410 may be performed by an OAM mode detection manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a first subset of a set of information bits based on the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 1415 may be performed according to the methods described herein. In some examples, aspects of the operations of 1415 may be performed by an information bit decoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a second subset of the set of information bits based on a signal that is modulated on one or more OAM multiplexing signals of the first subset of OAM multiplexing modes.
  • the operations of 1420 may be performed according to the methods described herein. In some examples, aspects of the operations of 1420 may be performed by an information bit decoder as described with reference to FIGs. 7 through 11.
  • FIG. 15 shows a flowchart illustrating a method 1500 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 1500 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 1500 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may communicate, to a transmitting device, a list of OAM multiplexing modes, one or more groups of OAM multiplexing modes, or any combinations thereof, that are unfavorable for communications between the transmitting device and the receiving device.
  • the operations of 1505 may be performed according to the methods described herein. In some examples, aspects of the operations of 1505 may be performed by an OAM mode reporting manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may receive, from the transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 1510 may be performed according to the methods described herein. In some examples, aspects of the operations of 1510 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 1515 may be performed according to the methods described herein. In some examples, aspects of the operations of 1515 may be performed by an OAM mode detection manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may decode a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 1520 may be performed according to the methods described herein. In some examples, aspects of the operations of 1520 may be performed by an information bit decoder as described with reference to FIGs. 7 through 11.
  • FIG. 16 shows a flowchart illustrating a method 1600 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 1600 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 1600 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may receive, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM modes that are concurrently usable for communications.
  • the operations of 1605 may be performed according to the methods described herein. In some examples, aspects of the operations of 1605 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may determine that a first subset of the two or more subsets of OAM multiplexing modes is used for a first transmission based on a received signal strength at a first subset of antenna ports associated with the first subset of the two or more subsets of OAM multiplexing modes relative to a signal strength of other subsets of antenna ports associated with other of the two or more subsets of OAM multiplexing modes.
  • the operations of 1610 may be performed according to the methods described herein. In some examples, aspects of the operations of 1610 may be performed by an OAM mode measurement manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may determine a first value of one or more bits of the set of information bits based on a mapping between the first subset of the two or more subsets of OAM multiplexing modes and the first value of the one or more bits of the set of information bits.
  • the operations of 1615 may be performed according to the methods described herein. In some examples, aspects of the operations of 1615 may be performed by an information bit decoder as described with reference to FIGs. 7 through 11.
  • FIG. 17 shows a flowchart illustrating a method 1700 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 1700 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 1700 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may receive, from the transmitting device, a first number of OAM multiplexing modes in a set of available OAM multiplexing modes and a second number of OAM multiplexing modes that are concurrently used for at least a first transmission.
  • the operations of 1705 may be performed according to the methods described herein. In some examples, aspects of the operations of 1705 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the set of available OAM multiplexing modes include two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device. In some cases, the two or more subsets of OAM multiplexing modes include combinations of individual OAM multiplexing modes of the set of available OAM multiplexing modes.
  • the UE or base station may identify a mapping between each of the two or more subsets of OAM multiplexing modes and a value of a first subset of a set of information bits, where the two or more subsets of OAM multiplexing modes are associated with the first number of OAM multiplexing modes and the second number of OAM multiplexing modes.
  • the operations of 1710 may be performed according to the methods described herein. In some examples, aspects of the operations of 1710 may be performed by a mapping manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 1715 may be performed according to the methods described herein. In some examples, aspects of the operations of 1715 may be performed by an OAM mode detection manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may decode a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes and the mapping.
  • the operations of 1720 may be performed according to the methods described herein. In some examples, aspects of the operations of 1720 may be performed by an information bit decoder as described with reference to FIGs. 7 through 11.
  • FIG. 18 shows a flowchart illustrating a method 1800 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 1800 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 1800 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may receive, from a transmitting device, a first number of OAM multiplexing modes in a set of available OAM multiplexing modes and a second number of OAM multiplexing modes that are concurrently used for at least a first transmission.
  • the operations of 1805 may be performed according to the methods described herein. In some examples, aspects of the operations of 1805 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the set of available OAM multiplexing modes include two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the UE or base station may receive, from the transmitting device, information associated with a third number of unusable subsets of OAM multiplexing modes of the set of available OAM multiplexing modes.
  • the operations of 1810 may be performed according to the methods described herein. In some examples, aspects of the operations of 1810 may be performed by a mapping manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a mapping between each of the two or more subsets of OAM multiplexing modes and a value of a first subset of a set of information bits, where the two or more subsets are associated with the first number of OAM multiplexing modes, the second number of OAM multiplexing modes, and the third number of unusable subsets of OAM multiplexing modes.
  • the operations of 1815 may be performed according to the methods described herein. In some examples, aspects of the operations of 1815 may be performed by a mapping manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify that the first transmission uses a first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 1820 may be performed according to the methods described herein. In some examples, aspects of the operations of 1820 may be performed by an OAM mode detection manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may decode a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes and the mapping.
  • the operations of 1825 may be performed according to the methods described herein. In some examples, aspects of the operations of 1825 may be performed by an information bit decoder as described with reference to FIGs. 7 through 11.
  • FIG. 19 shows a flowchart illustrating a method 1900 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 1900 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 1900 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may receive, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 1905 may be performed according to the methods described herein. In some examples, aspects of the operations of 1905 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11. In some cases, at least one subset of the two or more subsets of OAM multiplexing modes has a different number of OAM multiplexing modes than at least one other subset of the two or more subsets of OAM multiplexing modes.
  • the UE or base station may receive, from the transmitting device for each subset of the two or more subsets of OAM multiplexing modes, an identical first number of OAM multiplexing modes of the set of available OAM multiplexing modes and a different second number of concurrently used OAM multiplexing modes.
  • the operations of 1910 may be performed according to the methods described herein. In some examples, aspects of the operations of 1910 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may receive, from the transmitting device, an indication of one or more unusable subsets of the two or more subsets of OAM multiplexing modes.
  • the operations of 1915 may be performed according to the methods described herein. In some examples, aspects of the operations of 1915 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may remove the one or more unusable subsets from the two or more subsets of OAM multiplexing modes to identify remaining subsets of OAM multiplexing modes.
  • the operations of 1920 may be performed according to the methods described herein. In some examples, aspects of the operations of 1920 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 1925 may be performed according to the methods described herein. In some examples, aspects of the operations of 1925 may be performed by an OAM mode detection manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may decode a set of information bits associated with the first transmission based on the identified first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 1930 may be performed according to the methods described herein. In some examples, aspects of the operations of 1930 may be performed by an information bit decoder as described with reference to FIGs. 7 through 11.
  • FIG. 20 shows a flowchart illustrating a method 2000 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 2000 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 2000 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may receive, from a transmitting device, two or more patterns of OAM multiplexing modes that are each associated with a different subset of two or more subsets of OAM multiplexing modes.
  • the operations of 2005 may be performed according to the methods described herein. In some examples, aspects of the operations of 2005 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11. In some cases, each pattern of the two or more patterns of OAM multiplexing modes is mapped to a different value of a first subset of a set of information bits.
  • the UE or base station may detect a first pattern of OAM multiplexing modes that is used for a first transmission.
  • the operations of 2010 may be performed according to the methods described herein. In some examples, aspects of the operations of 2010 may be performed by an OAM mode measurement manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a first value of the first subset of the set of information bits based on the detected first pattern.
  • the operations of 2015 may be performed according to the methods described herein. In some examples, aspects of the operations of 2015 may be performed by an OAM mode measurement manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may decode the set of information bits associated with the first transmission based on the identified first value of the first subset of the set of information bits.
  • the operations of 2020 may be performed according to the methods described herein. In some examples, aspects of the operations of 2020 may be performed by an information bit decoder as described with reference to FIGs. 7 through 11.
  • FIG. 21 shows a flowchart illustrating a method 2100 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 2100 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 2100 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 2105 may be performed according to the methods described herein. In some examples, aspects of the operations of 2105 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a set of information bits to be communicated to the receiving device in a first transmission.
  • the operations of 2110 may be performed according to the methods described herein. In some examples, aspects of the operations of 2110 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits.
  • the operations of 2115 may be performed according to the methods described herein. In some examples, aspects of the operations of 2115 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 2120 may be performed according to the methods described herein. In some examples, aspects of the operations of 2120 may be performed by an OAM transmission manager as described with reference to FIGs. 7 through 11.
  • FIG. 22 shows a flowchart illustrating a method 2200 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 2200 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 2200 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 2205 may be performed according to the methods described herein. In some examples, aspects of the operations of 2205 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a set of information bits to be communicated to the receiving device in a first transmission.
  • the operations of 2210 may be performed according to the methods described herein. In some examples, aspects of the operations of 2210 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits.
  • the operations of 2215 may be performed according to the methods described herein. In some examples, aspects of the operations of 2215 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may modulate a portion of the set of information bits on one or more OAM multiplexing signals of the first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 2220 may be performed according to the methods described herein. In some examples, aspects of the operations of 2220 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 2225 may be performed according to the methods described herein. In some examples, aspects of the operations of 2225 may be performed by an OAM transmission manager as described with reference to FIGs. 7 through 11.
  • FIG. 23 shows a flowchart illustrating a method 2300 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 2300 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 2300 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may receive, from the receiving device, a list of OAM multiplexing modes, one or more groups of OAM multiplexing modes, or any combinations thereof, that are unfavorable for communications between the transmitting device and the receiving device.
  • the operations of 2305 may be performed according to the methods described herein. In some examples, aspects of the operations of 2305 may be performed by an OAM mode reporting manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 2310 may be performed according to the methods described herein. In some examples, aspects of the operations of 2310 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a set of information bits to be communicated to the receiving device in a first transmission.
  • the operations of 2315 may be performed according to the methods described herein. In some examples, aspects of the operations of 2315 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits.
  • the operations of 2320 may be performed according to the methods described herein. In some examples, aspects of the operations of 2320 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 2325 may be performed according to the methods described herein. In some examples, aspects of the operations of 2325 may be performed by an OAM transmission manager as described with reference to FIGs. 7 through 11.
  • FIG. 24 shows a flowchart illustrating a method 2400 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 2400 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 2400 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 2405 may be performed according to the methods described herein. In some examples, aspects of the operations of 2405 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11. In some cases, each of the two or more subsets of OAM multiplexing modes is associated with a value of the one or more bits of the set of information bits.
  • the UE or base station may identify a set of information bits to be communicated to the receiving device in a first transmission.
  • the operations of 2410 may be performed according to the methods described herein. In some examples, aspects of the operations of 2410 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may determine the first subset of the two or more subsets of OAM multiplexing modes based on a mapping between the two or more subsets of OAM multiplexing modes and values of one or more bits of the set of information bits.
  • the operations of 2415 may be performed according to the methods described herein. In some examples, aspects of the operations of 2415 may be performed by a mapping manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 2420 may be performed according to the methods described herein. In some examples, aspects of the operations of 2420 may be performed by an OAM transmission manager as described with reference to FIGs. 7 through 11.
  • FIG. 25 shows a flowchart illustrating a method 2500 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 2500 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 2500 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 2505 may be performed according to the methods described herein. In some examples, aspects of the operations of 2505 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11. In some cases, the two or more subsets of OAM multiplexing modes include combinations of individual OAM multiplexing modes of the set of available OAM multiplexing modes.
  • the UE or base station may transmit, to the receiving device, a first number of OAM multiplexing modes in the set of available OAM multiplexing modes and a second number of OAM multiplexing modes that are concurrently used for at least a first transmission.
  • the operations of 2510 may be performed according to the methods described herein. In some examples, aspects of the operations of 2510 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, information associated with a third number of unusable subsets of OAM multiplexing modes of the set of available OAM multiplexing modes.
  • the operations of 2515 may be performed according to the methods described herein. In some examples, aspects of the operations of 2515 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a mapping between each of the two or more subsets of OAM multiplexing modes and a value of the one or more bits of the set of information bits, where the two or more subsets are associated with the first number of OAM multiplexing modes and the second number of OAM multiplexing modes.
  • the operations of 2520 may be performed according to the methods described herein. In some examples, aspects of the operations of 2520 may be performed by a mapping manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a set of information bits to be communicated to the receiving device in a first transmission.
  • the operations of 2525 may be performed according to the methods described herein. In some examples, aspects of the operations of 2525 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits.
  • the operations of 2530 may be performed according to the methods described herein. In some examples, aspects of the operations of 2530 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 2535 may be performed according to the methods described herein. In some examples, aspects of the operations of 2535 may be performed by an OAM transmission manager as described with reference to FIGs. 7 through 11.
  • FIG. 26 shows a flowchart illustrating a method 2600 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 2600 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 2600 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may receive, from a receiving device, information associated with a number of unusable subsets of OAM multiplexing modes of a set of available OAM multiplexing modes.
  • the operations of 2605 may be performed according to the methods described herein. In some examples, aspects of the operations of 2605 may be performed by an OAM mode reporting manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 2610 may be performed according to the methods described herein. In some examples, aspects of the operations of 2610 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11. In some cases, the two or more subsets of OAM multiplexing modes include combinations of individual OAM multiplexing modes of the set of available OAM multiplexing modes.
  • the UE or base station may transmit, to the receiving device, a first number of OAM multiplexing modes in the set of available OAM multiplexing modes and a second number of OAM multiplexing modes that are concurrently used for at least the first transmission.
  • the operations of 2615 may be performed according to the methods described herein. In some examples, aspects of the operations of 2615 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, information associated with a third number of unusable subsets of OAM multiplexing modes of the set of available OAM multiplexing modes.
  • the operations of 2620 may be performed according to the methods described herein. In some examples, aspects of the operations of 2620 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a mapping between each of the two or more subsets of OAM multiplexing modes and a value of the one or more bits of the set of information bits, where the two or more subsets are associated with the first number of OAM multiplexing modes, the second number of OAM multiplexing modes and the third number of unusable subsets of OAM multiplexing modes.
  • the operations of 2625 may be performed according to the methods described herein. In some examples, aspects of the operations of 2625 may be performed by a mapping manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a set of information bits to be communicated to the receiving device in a first transmission.
  • the operations of 2630 may be performed according to the methods described herein. In some examples, aspects of the operations of 2630 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits.
  • the operations of 2635 may be performed according to the methods described herein. In some examples, aspects of the operations of 2635 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 2640 may be performed according to the methods described herein. In some examples, aspects of the operations of 2640 may be performed by an OAM transmission manager as described with reference to FIGs. 7 through 11.
  • FIG. 27 shows a flowchart illustrating a method 2700 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 2700 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 2700 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 2705 may be performed according to the methods described herein. In some examples, aspects of the operations of 2705 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11. In some cases, at least one subset of the two or more subsets of OAM multiplexing modes has a different number of OAM multiplexing modes than at least one other subset of the two or more subsets of OAM multiplexing modes.
  • the UE or base station may transmit, to the receiving device for each subset of the two or more subsets of OAM multiplexing modes, an identical first number of OAM multiplexing modes of the set of available OAM multiplexing modes and a different second number of concurrently used OAM multiplexing modes.
  • the operations of 2710 may be performed according to the methods described herein. In some examples, aspects of the operations of 2710 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a set of information bits to be communicated to the receiving device in a first transmission.
  • the operations of 2715 may be performed according to the methods described herein. In some examples, aspects of the operations of 2715 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits.
  • the operations of 2720 may be performed according to the methods described herein. In some examples, aspects of the operations of 2720 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 2725 may be performed according to the methods described herein. In some examples, aspects of the operations of 2725 may be performed by an OAM transmission manager as described with reference to FIGs. 7 through 11.
  • FIG. 28 shows a flowchart illustrating a method 2800 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 2800 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 2800 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 2805 may be performed according to the methods described herein. In some examples, aspects of the operations of 2805 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11. In some cases, at least one subset of the two or more subsets of OAM multiplexing modes has a different number of OAM multiplexing modes than at least one other subset of the two or more subsets of OAM multiplexing modes.
  • the UE or base station may transmit, to the receiving device for each subset of the two or more subsets of OAM multiplexing modes, an identical first number of OAM multiplexing modes of the set of available OAM multiplexing modes and a different second number of concurrently used OAM multiplexing modes.
  • the operations of 2815 may be performed according to the methods described herein. In some examples, aspects of the operations of 2815 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, an indication of one or more unusable subsets of the two or more subsets of OAM multiplexing modes.
  • the operations of 2820 may be performed according to the methods described herein. In some examples, aspects of the operations of 2820 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may remove the one or more unusable subsets from the two or more subsets of OAM multiplexing modes to identify remaining subsets of OAM multiplexing modes.
  • the operations of 2825 may be performed according to the methods described herein. In some examples, aspects of the operations of 2825 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a set of information bits to be communicated to the receiving device in a first transmission.
  • the operations of 2830 may be performed according to the methods described herein. In some examples, aspects of the operations of 2830 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits.
  • the operations of 2835 may be performed according to the methods described herein. In some examples, aspects of the operations of 2835 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 2840 may be performed according to the methods described herein. In some examples, aspects of the operations of 2840 may be performed by an OAM transmission manager as described with reference to FIGs. 7 through 11.
  • FIG. 29 shows a flowchart illustrating a method 2900 that supports information transmission by mode selection and detection in OAM multiplexing communications in accordance with aspects of the present disclosure.
  • the operations of method 2900 may be implemented by a UE 115 or base station 105 or its components as described herein.
  • the operations of method 2900 may be performed by a communications manager as described with reference to FIGs. 7 through 11.
  • a UE or base station may execute a set of instructions to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, a UE or base station may perform aspects of the functions described below using special-purpose hardware.
  • the UE or base station may transmit, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device.
  • the operations of 2905 may be performed according to the methods described herein. In some examples, aspects of the operations of 2905 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, two or more patterns of OAM multiplexing modes that are each associated with a different subset of the two or more subsets of the set of available OAM multiplexing modes.
  • the operations of 2910 may be performed according to the methods described herein. In some examples, aspects of the operations of 2910 may be performed by an OAM subset manager as described with reference to FIGs. 7 through 11.
  • the UE or base station may identify a set of information bits to be communicated to the receiving device in a first transmission.
  • the operations of 2915 may be performed according to the methods described herein. In some examples, aspects of the operations of 2915 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may select a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits.
  • the operations of 2920 may be performed according to the methods described herein. In some examples, aspects of the operations of 2920 may be performed by an information bit encoder as described with reference to FIGs. 7 through 11.
  • the UE or base station may transmit, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • the operations of 2925 may be performed according to the methods described herein. In some examples, aspects of the operations of 2925 may be performed by an OAM transmission manager as described with reference to FIGs. 7 through 11.
  • a method for wireless communication at a receiving device comprising: receiving, from a transmitting device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device; identifying that a first transmission uses a first subset of the two or more subsets of OAM multiplexing modes; and decoding a set of information bits associated with the first transmission based at least in part on the identified first subset of the two or more subsets of OAM multiplexing modes.
  • Aspect 2 The method of aspect 1, wherein the two or more subsets of OAM multiplexing modes are identified based at least in part on one or more of a number of OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, a set of patterns of concurrent OAM multiplexing modes for communications between the transmitting device and the receiving device, or any combinations thereof.
  • Aspect 3 The method of any of aspects 1 through 2, wherein the identifying comprises: measuring one or more channel parameters of a plurality of subsets of antenna ports, each subset of the plurality of subsets of antenna ports associated with a subset of the two or more subsets of OAM multiplexing modes; and determining, based at least in part on the one or more channel parameters, that the first transmission uses the first subset of the two or more subsets of OAM multiplexing modes.
  • Aspect 4 The method of any of aspects 1 through 3, wherein a number of usable OAM multiplexing modes of the set of available OAM multiplexing modes at the transmitting device is larger than a number of supported OAM multiplexing modes at the receiving device.
  • Aspect 5 The method of any of aspects 1 through 4, wherein the decoding comprises: identifying a first subset of the set of information bits based at least in part on the first transmission using the first subset of the two or more subsets of OAM multiplexing modes; and identifying a second subset of the set of information bits based at least in part on a signal that is modulated on one or more OAM multiplexing signals of the first subset of OAM multiplexing modes.
  • Aspect 6 The method of aspect 5, wherein the first subset of the set of information bits, and the second subset of the set of information bits, are from a same codeword, from different codewords, from a same transport block, or from different transport blocks.
  • Aspect 7 The method of any of aspects 1 through 6, further comprising: communicating, to the transmitting device, a list of OAM multiplexing modes, one or more groups of OAM multiplexing modes, or any combinations thereof, that are unfavorable for communications between the transmitting device and the receiving device.
  • Aspect 8 The method of aspect 7, wherein the set of available OAM multiplexing modes does not include OAM multiplexing modes from the list of OAM multiplexing modes.
  • Aspect 9 The method of any of aspects 7 through 8, wherein the two or more subsets of OAM multiplexing modes do not include OAM multiplexing modes from the one or more groups of OAM multiplexing modes.
  • Aspect 10 The method of any of aspects 1 through 9, wherein each of the two or more subsets of OAM multiplexing modes is associated with a value of a first subset of the set of information bits.
  • Aspect 11 The method of aspect 10, further comprising: determining a first value of one or more bits of the set of information bits based at least in part on a mapping between the first subset of the two or more subsets of OAM multiplexing modes and the first value of the one or more bits of the set of information bits.
  • Aspect 12 The method of aspect 11, further comprising: determining that the first subset of the two or more subsets of OAM multiplexing modes is used for the first transmission based at least in part on a received signal strength at a first subset of antenna ports associated with the first subset of the two or more subsets of OAM multiplexing modes relative to other subsets of antenna ports associated with other of the two or more subsets of OAM multiplexing modes.
  • Aspect 13 The method of any of aspects 1 through 12, wherein the two or more subsets of OAM multiplexing modes include combinations of individual OAM multiplexing modes of the set of available OAM multiplexing modes.
  • Aspect 14 The method of aspect 13, wherein the receiving further comprises: receiving, from the transmitting device, a first number of OAM multiplexing modes in the set of available OAM multiplexing modes and a second number of OAM multiplexing modes that are concurrently used for at least the first transmission.
  • Aspect 15 The method of aspect 14, further comprising: identifying a mapping between each of the two or more subsets of OAM multiplexing modes and a value of a first subset of the set of information bits, wherein the two or more subsets are associated with the first number of OAM multiplexing modes and the second number of OAM multiplexing modes.
  • Aspect 16 The method of any of aspects 14 through 15, wherein the receiving further comprises: receiving, from the transmitting device, information associated with a third number of unusable subsets of OAM multiplexing modes of the set of available OAM multiplexing modes.
  • Aspect 17 The method of aspect 16, further comprising: identifying a mapping between each of the two or more subsets of OAM multiplexing modes and a value of a first subset of the set of information bits, wherein the two or more subsets are associated with the first number of OAM multiplexing modes, the second number of OAM multiplexing modes, and the third number of unusable subsets of OAM multiplexing modes.
  • Aspect 18 The method of any of aspects 16 through 17, wherein the two or more subsets of OAM multiplexing modes do not include the unusable subsets of OAM multiplexing modes.
  • Aspect 19 The method of any of aspects 1 through 18, wherein at least one subset of the two or more subsets of OAM multiplexing modes has a different number of OAM multiplexing modes than at least one other subset of the two or more subsets of OAM multiplexing modes.
  • Aspect 20 The method of aspect 19, wherein the receiving further comprises: receiving, from the transmitting device for each subset of the two or more subsets of OAM multiplexing modes, an identical first number of OAM multiplexing modes of the set of available OAM multiplexing modes and a different second number of concurrently used OAM multiplexing modes.
  • Aspect 21 The method of any of aspects 19 through 20, wherein the receiving further comprises: receiving, from the transmitting device, an indication of one or more unusable subsets of the two or more subsets of OAM multiplexing modes; and removing the one or more unusable subsets from the two or more subsets of OAM multiplexing modes to identify remaining subsets of OAM multiplexing modes.
  • Aspect 22 The method of aspect 21, wherein each subset of the remaining subsets of OAM multiplexing modes is mapped to a value of the first subset of the set of information bits.
  • Aspect 23 The method of any of aspects 1 through 22, wherein the receiving further comprises: receiving, from the transmitting device, two or more patterns of OAM multiplexing modes that are each associated with a different subset of the two or more subsets of OAM multiplexing modes.
  • Aspect 24 The method of aspect 23, wherein each pattern of the two or more patterns of OAM multiplexing modes is mapped to a different value of a first subset of the set of information bits.
  • Aspect 25 The method of aspect 24, wherein the identifying further comprises: detecting a first pattern of OAM multiplexing modes that is used for the first transmission; and identifying a first value of the first subset of the set of information bits based at least in part on the detected first pattern.
  • Aspect 26 The method of any of aspects 1 through 25, wherein the receiving comprises receiving configuration information from the transmitting device via one or more of RRC signaling, a MAC-CE, physical layer signaling, or any combinations thereof.
  • Aspect 27 The method of aspect 26, wherein the configuration information is provided periodically or aperiodically.
  • a method for wireless communication at a transmitting device comprising: transmitting, to a receiving device, a message indicating a set of available OAM multiplexing modes usable for communications between the transmitting device and the receiving device, and two or more subsets of OAM multiplexing modes that each include one or more OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device; identifying a set of information bits to be communicated to the receiving device in a first transmission; selecting a first subset of the two or more subsets of OAM multiplexing modes that is associated with at least a first value of one or more bits of the set of information bits; and transmitting, to the receiving device, the first transmission using the first subset of the two or more subsets of OAM multiplexing modes.
  • Aspect 29 The method of aspect 28, wherein the two or more subsets of OAM multiplexing modes are identified based at least in part on one or more of a number of OAM multiplexing modes that are concurrently usable for communications between the transmitting device and the receiving device, a set of patterns of concurrent OAM multiplexing modes for communications between the transmitting device and the receiving device, or any combinations thereof.
  • Aspect 30 The method of any of aspects 28 through 29, wherein a number of usable OAM multiplexing modes of the set of available OAM multiplexing modes at the transmitting device is larger than a number of supported OAM modes at the receiving device.
  • Aspect 31 The method of any of aspects 28 through 30, wherein the transmitting further comprises: modulating a portion of the set of information bits on one or more OAM multiplexing signals of the first subset of the two or more subsets of OAM multiplexing modes.
  • Aspect 32 The method of aspect 31, wherein a first subset of the set of information bits is indicated based on the selected subset of the two or more subsets of OAM multiplexing modes, and the modulating provides a second subset of the set of information bits, and the first and second subsets of the set of information bits are from a same codeword, from different codewords, from a same transport block, or from different transport blocks.
  • Aspect 33 The method of any of aspects 28 through 32, further comprising: receiving, from the receiving device, a list of OAM multiplexing modes, one or more groups of OAM multiplexing modes, or any combinations thereof, that are unfavorable for communications between the transmitting device and the receiving device.
  • Aspect 34 The method of aspect 33, wherein the set of available OAM multiplexing modes does not include OAM multiplexing modes from the list of OAM multiplexing modes.
  • Aspect 35 The method of any of aspects 33 through 34, wherein the two or more subsets of OAM multiplexing modes do not include OAM multiplexing modes from the one or more groups of OAM multiplexing modes.
  • Aspect 36 The method of any of aspects 28 through 35, wherein each of the two or more subsets of OAM multiplexing modes is associated with a value of the one or more bits of the set of information bits.
  • Aspect 37 The method of aspect 36, further comprising: determining the first subset of the two or more subsets of OAM multiplexing modes based at least in part on a mapping between the two or more subsets of OAM multiplexing modes and values of the one or more bits of the set of information bits.
  • Aspect 38 The method of any of aspects 28 through 37, wherein the two or more subsets of OAM multiplexing modes include combinations of individual OAM multiplexing modes of the set of available OAM multiplexing modes.
  • Aspect 39 The method of aspect 38, further comprising: transmitting, to the receiving device, a first number of OAM multiplexing modes in the set of available OAM multiplexing modes and a second number of OAM multiplexing modes that are concurrently used for at least the first transmission.
  • Aspect 40 The method of aspect 39, further comprising: transmitting, to the receiving device, information associated with a third number of unusable subsets of OAM multiplexing modes of the set of available OAM multiplexing modes.
  • Aspect 41 The method of aspect 40, further comprising: identifying a mapping between each of the two or more subsets of OAM multiplexing modes and a value of the one or more bits of the set of information bits, wherein the two or more subsets are associated with the first number of OAM multiplexing modes and the second number of OAM multiplexing modes.
  • Aspect 42 The method of any of aspects 40 through 41, further comprising: receiving, from the transmitting device, information associated with the third number of unusable subsets of OAM multiplexing modes of the set of available OAM multiplexing modes.
  • Aspect 43 The method of aspect 42, further comprising: identifying a mapping between each of the two or more subsets of OAM multiplexing modes and a value of the one or more bits of the set of information bits, wherein the two or more subsets are associated with the first number of OAM multiplexing modes, the second number of OAM multiplexing modes and the third number of unusable subsets of OAM multiplexing modes.
  • Aspect 44 The method of aspect 43, wherein the two or more subsets of OAM multiplexing modes do not include the unusable subsets of OAM multiplexing modes.
  • Aspect 45 The method of any of aspects 28 through 44, wherein at least one subset of the two or more subsets of OAM multiplexing modes has a different number of OAM multiplexing modes than at least one other subset of the two or more subsets of OAM multiplexing modes.
  • Aspect 46 The method of aspect 45, further comprising: transmitting, to the receiving device for each subset of the two or more subsets of OAM multiplexing modes, an identical first number of OAM multiplexing modes of the set of available OAM multiplexing modes and a different second number of concurrently used OAM multiplexing modes.
  • Aspect 47 The method of aspect 46, further comprising: transmitting, to the receiving device, an indication of one or more unusable subsets of the two or more subsets of OAM multiplexing modes; and removing the one or more unusable subsets from the two or more subsets of OAM multiplexing modes to identify remaining subsets of OAM multiplexing modes.
  • Aspect 48 The method of aspect 47, wherein each subset of the remaining subsets of OAM multiplexing modes is mapped to a value of the one or more bits of the set of information bits.
  • Aspect 49 The method of any of aspects 28 through 48, further comprising: transmitting, to the receiving device, two or more patterns of OAM multiplexing modes that are each associated with a different subset of the two or more subsets of the set of available OAM multiplexing modes.
  • Aspect 50 The method of aspect 49, wherein each pattern of the two or more patterns of OAM multiplexing modes is mapped to different values of the one or more bits of the set of information bits.
  • Aspect 51 The method of aspect 50, wherein a first pattern of OAM multiplexing modes is used for the first transmission, and a first value of the one or more bits of the set of information bits is indicated based at least in part on the first pattern.
  • Aspect 52 The method of any of aspects 28 through 51, wherein configuration information that indicates the set of available OAM multiplexing modes and the two or more subsets of OAM multiplexing modes is transmitted to the receiving device via one or more of RRC signaling, a MAC-CE, physical layer signaling, or any combinations thereof.
  • Aspect 53 The method of aspect 52, wherein the configuration information is transmitted periodically or aperiodically.
  • Aspect 54 An apparatus for wireless communication at a receiving device, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 1 through 27.
  • Aspect 55 An apparatus for wireless communication at a receiving device, comprising at least one means for performing a method of any of aspects 1 through 27.
  • Aspect 56 A non-transitory computer-readable medium storing code for wireless communication at a receiving device, the code comprising instructions executable by a processor to perform a method of any of aspects 1 through 27.
  • Aspect 57 An apparatus for wireless communication at a transmitting device, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method of any of aspects 28 through 53.
  • Aspect 58 An apparatus for wireless communication at a transmitting device, comprising at least one means for performing a method of any of aspects 28 through 53.
  • Aspect 59 A non-transitory computer-readable medium storing code for wireless communication at a transmitting device, the code comprising instructions executable by a processor to perform a method of any of aspects 28 through 53.
  • LTE, LTE-A, LTE-A Pro, or NR may be described for purposes of example, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in much of the description, the techniques described herein are applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks.
  • the described techniques may be applicable to various other wireless communications systems such as Ultra Mobile Broadband (UMB) , Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20, Flash-OFDM, as well as other systems and radio technologies not explicitly mentioned herein.
  • UMB Ultra Mobile Broadband
  • IEEE Institute of Electrical and Electronics Engineers
  • Wi-Fi Institute of Electrical and Electronics Engineers
  • WiMAX IEEE 802.16
  • IEEE 802.20 Flash-OFDM
  • Information and signals described herein may be represented using any of a variety of different technologies and techniques.
  • data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) .
  • the functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
  • Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.
  • non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • any connection is properly termed a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) , or wireless technologies such as infrared, radio, and microwave
  • the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable medium.
  • Disk and disc include 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 are also included within the scope of computer-readable media.

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Abstract

L'invention concerne des procédés, des systèmes et des dispositifs pour des communications sans fil dans lesquels un dispositif de transmission et un dispositif de réception peuvent communiquer des informations sur la base d'un sous-ensemble de modes de multiplexage de moment angulaire orbital (OAM) qui sont utilisés pour une communication. Chacun d'une pluralité de sous-ensembles différents d'un ensemble de modes de multiplexage d'OAM disponibles peut être mis en correspondance avec un ou plusieurs bits d'informations et le dispositif de transmission peut sélectionner le sous-ensemble de modes de multiplexage d'OAM sur la base de bits d'informations à transmettre et du sous-ensemble de modes de multiplexage d'OAM qui est mis en correspondance avec un premier sous-ensemble des bits d'informations. Le dispositif de réception peut détecter quel sous-ensemble de modes de multiplexage d'OAM est utilisé pour une transmission à partir du dispositif de transmission et décoder le premier sous-ensemble des bits d'informations sur la base du sous-ensemble détecté et du ou des bits qui sont mis en correspondance avec celui-ci.
PCT/CN2020/125629 2020-10-31 2020-10-31 Transmission d'informations par sélection et détection de mode dans des communications par multiplexage de moment angulaire orbital WO2022088126A1 (fr)

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EP3407514A1 (fr) * 2016-01-20 2018-11-28 Panasonic Intellectual Property Management Co., Ltd. Dispositif de transmission, dispositif de réception et procédé de communication
CN110177067A (zh) * 2019-05-17 2019-08-27 清华大学 适合长距离传输的轨道角动量索引调制传输系统及方法
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EP3407514A1 (fr) * 2016-01-20 2018-11-28 Panasonic Intellectual Property Management Co., Ltd. Dispositif de transmission, dispositif de réception et procédé de communication
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