Reference signal phase time drift model report for reference signal time domain coherence in new radio

Abstract

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may report time domain models and parameters to indicate how one or more characteristics (such as phase) of a port used to send a reference signal may vary across time. For example, the UE may determine one or more transmission parameter sets associated with a reference signal type, wherein the one or more transmission parameter sets may enable a receiving device to bundle reference signals of the reference signal type. The UE may send an indication of these one or more transmission parameter sets to a receiving device, wherein the indication may be associated with how characteristics of the port of the UE vary across time. Based on the indication of the one or more transmission parameter sets, the receiving device may receive the reference signal and the bundled (e.g., combined) reference signal.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims the benefit of Greek Provisional Patent Application No. 20200100206 of MANOLAKOS et al., filed on April 23, 2000, entitled “REFERENCE SIGNAL PHASE TIMEDRIFT MODEL REPORTING FOR REFERENCE SIGNAL TIME-DOMAIN COHERENCY IN NEWRADIO,” which is assigned to its assignee and is expressly incorporated herein by reference. Technical Field

[0003] The following relates generally to wireless communications, and more particularly to reference signal phase time drift model reporting for reference signal time domain coherence. Background Art

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, messaging, broadcasting, etc. These systems may be able to support the communication of multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of these multiple access systems include fourth generation (4G) systems, such as long term evolution (LTE) systems, advanced LTE (LTE-A) systems, or LTE-A Pro systems, and fifth generation (5G) systems that may be referred to as new radio (NR) systems. These systems may employ techniques such as code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), or discrete Fourier transform spread spectrum orthogonal frequency division multiplexing (DFT-S-OFDM). A wireless multiple access communication system may include one or more base stations or one or more network access nodes, each base station or network access node simultaneously supporting communication for multiple communication devices, which may be otherwise referred to as user equipment (UE). Summary of the invention

[0005] The described technology relates to improved methods, systems, devices and apparatuses for supporting reference signal phase time drift model reporting for reference signal time domain coherence in new radio (NR). In general, the described technology allows a user equipment (UE) to report a time domain model and parameters to indicate how one or more characteristics of a port for sending a reference signal (such as the phase of the port for sending the reference signal) can vary across time. For example, the UE may determine one or more transmission parameter sets associated with a reference signal type, wherein the one or more transmission parameter sets may enable a receiving device to bundle reference signals of the reference signal type. Subsequently, the UE may send an indication of these one or more transmission parameter sets to a receiving device, wherein the indication may be associated with how the characteristics of one or more ports of the UE vary, for example, across time. In some examples, the characteristics associated with how one or more ports of the UE vary across time may include the phase of one or more ports that vary across time. Based on the indication of one or more transmission parameter sets, the receiving device may receive multiple reference signals (e.g., from the UE) and bundle (e.g., combine) multiple reference signals. Accordingly, the UE and the receiving device may then communicate based on the indication of one or more transmission parameter sets and the bundled reference signals.

[0006] In some examples, the UE may report one or more transmission parameter sets using different transmission characteristics. For example, the UE may report one or more transmission parameter sets according to one or more reference signal resources used to send the reference signal, according to one or more reference signal resource set identifiers used to send the reference signal, according to one or more port numbers used to send the reference signal, according to one or more usage purposes used for the reference signal, according to one or more frequency bands used to send the reference signal, according to one or more frequency band combinations used to send the reference signal, according to one or more component carriers (CCs) used to send the reference signal, according to one or more bandwidth parts (BWPs) used to send the reference signal, according to one or more reference signal types, or any combination thereof, etc. In addition, if one or more conditions (e.g., constraints) are met within a specified time window, one or more transmission parameter sets may be valid between any two reference signals. For example, the one or more conditions may include the number of static ports used, remaining in a discontinuous reception (DRX) active time, no measurement gaps occurring, using the same active BWP, dual connectivity and carrier aggregation configurations remaining the same, the transmission power of the reference signal meeting a threshold, or any combination thereof, etc. Additionally, when sending an indication of one or more sets of transmission parameters, the UE may send a time (eg, a time gap) during which the receiving device may be configured to operate such that the one or more sets of transmission parameters remain constant and valid.

[0007] A method of wireless communication at a UE is described. The method may include: determining one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets used to enable a receiving device to bundle reference signals of the reference signal type; sending an indication of the one or more transmission parameter sets to the receiving device, the indication associated with how a characteristic of one or more ports of the UE varies across time; and communicating with the receiving device based on the one or more transmission parameter sets.

[0008] An apparatus for wireless communication at a UE is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the apparatus to: determine one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets being used to enable a receiving device to bundle reference signals of the reference signal type; send an indication of the one or more transmission parameter sets to the receiving device, the indication being associated with how a characteristic of one or more ports of the UE varies across time; and communicate with the receiving device based on the one or more transmission parameter sets.

[0009] Another apparatus for wireless communication at a UE is described. The apparatus may include: a component for determining one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets used to enable a receiving device to bundle reference signals of the reference signal type; a component for sending an indication of the one or more transmission parameter sets to the receiving device, the indication being associated with how a characteristic of one or more ports of the UE varies across time; and a component for communicating with the receiving device based on the one or more transmission parameter sets.

[0010] A non-transitory computer-readable medium storing code for wireless communication at a UE is described. The code may include instructions executable by a processor to perform the following: determine one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets used to enable a receiving device to bundle reference signals of the reference signal type; send an indication of the one or more transmission parameter sets to the receiving device, the indication being associated with how a characteristic of one or more ports of the UE varies across time; and communicate with the receiving device based on the one or more transmission parameter sets.

[0011] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending an indication of the one or more sets of transmission parameters may include operations, features, components, or instructions for sending a time gap indication for each of the one or more sets of transmission parameters, the time gap indication including a duration during which the set of transmission parameters is constant.

[0012] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each of the one or more sets of transmission parameters may be valid for a respective time slot.

[0013] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the time gap indication may include a time difference for which the time phase drift value is valid.

[0014] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending an indication of one or more sets of transmission parameters may include operations, features, components, or instructions for sending an indication of one or more sets of transmission parameters per port of a UE.

[0015] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending an indication of one or more sets of transmission parameters may include operations, features, components, or instructions for sending a variance associated with uncertainty of the one or more sets of transmission parameters (e.g., the variance of the uncertainty may represent an error rate).

[0016] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, determining one or more transmission parameter sets may include operations, features, components, or instructions for determining each of the one or more transmission parameter sets based on transmission characteristics applicable to each transmission parameter set.

[0017] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the transmission characteristics may include a reference signal resource for sending a reference signal, a reference signal resource set identifier for sending a reference signal, a number of ports for sending a reference signal, a usage purpose for the reference signal, a frequency band for sending a reference signal, a frequency band combination for sending a reference signal, a CC for sending a reference signal, a BWP for sending a reference signal, a reference signal type, or any combination thereof.

[0018] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending a baseline transmission parameter set, wherein each transmission parameter set of one or more transmission parameter sets includes a set of differential values ​​of a corresponding transmission parameter set based on the baseline transmission parameter set, and wherein communicating with a receiving device is based on sending the baseline transmission parameter set.

[0019] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, sending an indication of one or more sets of transmission parameters may include operations, features, components, or instructions for sending an indication of one or more sets of transmission parameters via: radio resource control (RRC) signaling, UE capability message, medium access control (MAC) control element (CE), or any combination thereof.

[0020] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for sending an indication of one or more transmission parameter sets based on the following: one or more transmission parameter sets are valid between the transmission of two reference signals of the reference signal type, one or more transmission parameter sets are valid based on the number of ports used to send the two reference signals not changing, the DRX active time remains active for the UE, whether a measurement gap occurs between the transmission of the two reference signals, maintaining an active BWP, maintaining a dual connectivity configuration, maintaining a carrier aggregation configuration, the transmission power of the two reference signals meets a power threshold, or any combination thereof.

[0021] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a set of one or more sets of transmission parameters may include a time phase drift rate, one or more time difference thresholds, an amplitude difference threshold, a phase difference threshold, or any combination thereof.

[0022] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a set of one or more sets of transmission parameters may include a time domain model for implementing bundling of reference signals at a receiving device.

[0023] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the reference signal type may include a sounding reference signal (SRS), a demodulation reference signal (DMRS), an uplink reference signal, a sidelink reference signal, or any combination thereof.

[0024] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the characteristic of how one or more ports of the UE vary across time may include a phase of the one or more ports, an amplitude of the one or more ports, or both.

[0025] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the receiving device may include a base station, a second UE, an additional wireless device, or any combination thereof.

[0026] A method of wireless communication at a receiving device is described. The method may include: receiving an indication of one or more transmission parameter sets for a reference signal type from a UE, the indication being associated with how a characteristic of one or more ports of the UE varies over time; bundling reference signals of the reference signal type sent by the UE based on the indication of the one or more transmission parameter sets; and communicating with the UE based on the one or more transmission parameter sets and the reference signals of the reference signal type bundled.

[0027] An apparatus for wireless communication at a receiving device is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. The instructions may be executed by the processor to cause the apparatus to: receive an indication of one or more transmission parameter sets for a reference signal type from a UE, the indication being associated with how a characteristic of one or more ports of the UE varies across time; bundle reference signals of the reference signal type sent by the UE based on the indication of the one or more transmission parameter sets; and communicate with the UE based on the one or more transmission parameter sets and the reference signals of the reference signal type bundled.

[0028] Another apparatus for wireless communication at a receiving device is described. The apparatus may include: a component for receiving an indication of one or more transmission parameter sets for a reference signal type from a UE, the indication being associated with how a characteristic of one or more ports of the UE varies across time; a component for bundling reference signals of the reference signal type sent by the UE based on the indication of the one or more transmission parameter sets; and a component for communicating with the UE based on the one or more transmission parameter sets and the reference signals of the reference signal type bundled.

[0029] 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 perform the following: receiving an indication of one or more transmission parameter sets for a reference signal type from a UE, the indication associated with how a characteristic of one or more ports of the UE varies across time; bundling reference signals of the reference signal type sent by the UE based on the indication of the one or more transmission parameter sets; and communicating with the UE based on the one or more transmission parameter sets and the reference signals of the reference signal type bundled.

[0030] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving a first reference signal of the reference signal type from a UE; and receiving a second reference signal of the reference signal type from the UE, wherein bundling the reference signals of the reference signal type includes combining the first reference signal and the second reference signal based on one or more transmission parameter sets.

[0031] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an indication of the one or more sets of transmission parameters may include operations, features, components, or instructions for receiving a time gap indication for each of the one or more sets of transmission parameters, the time gap indication including a duration during which the set of transmission parameters is constant.

[0032] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving a first reference signal of the reference signal type from a UE at a first time; receiving a second reference signal of the reference signal type from the UE at a second time; and determining that the difference between the second time and the first time is greater than a duration indicated by a time gap indication, wherein based on the difference between the second time and the first time being greater than the duration and the transmission parameter set being not constant for the difference between the second time and the first time, the first reference signal and the second reference signal are not bundled.

[0033] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, each of the one or more sets of transmission parameters may be valid for a respective time slot.

[0034] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the time gap indication may include a time difference for which the time phase drift value is valid.

[0035] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an indication of one or more sets of transmission parameters may include operations, features, components, or instructions for receiving an indication of one or more sets of transmission parameters per port of a UE.

[0036] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an indication of one or more sets of transmission parameters may include operations, features, components, or instructions for receiving a variance associated with uncertainty of the one or more sets of transmission parameters (e.g., the variance of the uncertainty may represent an error rate).

[0037] Some examples of methods, apparatuses, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for determining that each of one or more sets of transmission parameters is suitable for a respective transmission characteristic.

[0038] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the transmission characteristics may include a reference signal resource for sending a reference signal, a reference signal resource set identifier for sending a reference signal, a number of ports for sending a reference signal, a usage purpose for the reference signal, a frequency band for sending a reference signal, a frequency band combination for sending a reference signal, a CC for sending a reference signal, a BWP for sending a reference signal, a reference signal type, or any combination thereof.

[0039] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving a baseline transmission parameter set, wherein each transmission parameter set of one or more transmission parameter sets includes a set of differential values ​​of a corresponding transmission parameter set based on the baseline transmission parameter set, and wherein communicating with the UE is based on receiving the baseline transmission parameter set.

[0040] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, receiving an indication of one or more sets of transmission parameters may include operations, features, components, or instructions for receiving an indication of one or more sets of transmission parameters via: RRC signaling, UE capability message, MAC-CE, or any combination thereof.

[0041] Some examples of the methods, apparatus, and non-transitory computer-readable media described herein may also include operations, features, components, or instructions for receiving an indication of one or more transmission parameter sets based on: one or more transmission parameter sets are valid between the transmission of two reference signals of the reference signal type, one or more transmission parameter sets are valid based on the number of ports used to send the two reference signals not changing, the DRX active time remains active for the UE, whether a measurement gap occurs between the transmission of the two reference signals, maintaining an active BWP, maintaining a dual connectivity configuration, maintaining a carrier aggregation configuration, the transmission power of the two reference signals meets a power threshold, or any combination thereof.

[0042] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a set of one or more sets of transmission parameters may include a time phase drift rate, one or more time difference thresholds, an amplitude difference threshold, a phase difference threshold, or any combination thereof.

[0043] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, a set of one or more sets of transmission parameters may include a time domain model for implementing bundling of reference signals at a receiving device.

[0044] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the reference signal type may include SRS, DMRS, uplink reference signal, sidelink reference signal, or any combination thereof.

[0045] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the characteristic of how one or more ports of the UE vary across time may include a phase of the one or more ports, an amplitude of the one or more ports, or both.

[0046] In some examples of the methods, apparatus, and non-transitory computer-readable media described herein, the receiving device may include a base station, a second UE, an additional wireless device, or any combination thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 An example of a system for wireless communication supporting reference signal phase time drift model reporting for reference signal time domain coherence in New Radio (NR) according to aspects of the present disclosure is shown.

[0048] Figure 2 An example of a wireless communication system supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to the disclosed aspects is shown.

[0049] Figure 3A , Figure 3B and Figure 3C An example of phase drift reporting supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown.

[0050] Figure 4A and Figure 4B An example of reference signal resource configuration supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown.

[0051] Figure 5 An example of a process flow supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to the disclosed aspects is shown.

[0052] Figure 6 and Figure 7 A block diagram of an apparatus supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown.

[0053] Figure 8A block diagram of a user equipment (UE) communications manager supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown.

[0054] Fig. 9 A diagram of a system including a device supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown.

[0055] Fig.10 and Fig.11 A block diagram of an apparatus supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown.

[0056] Fig.12 A block diagram of a communication manager supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR is shown according to aspects of the present disclosure.

[0057] Fig.13 A diagram of a system including a UE supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown.

[0058] Fig.14 A diagram of a system including a base station supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown.

[0059] Figures 15 to 20 A flow chart illustrating a method of supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. DETAILED DESCRIPTION

[0060] In some wireless communication systems (e.g., new radio (NR) communications), as part of different processes, a user equipment (UE) may send one or more reference signals to a receiving device (e.g., a base station, a second UE, etc.). For example, the different processes may include positioning determination, antenna selection, codebook selection, beam selection, etc. In order to enhance the capacity and coverage of the reference signal transmission, the receiving device (which may also be referred to as a node in this article) may be configured to bundle two or more reference signals together. In some examples, the UE may send a greater number of repetitions of the reference signal, and the receiving device and the UE may use a partial reference signal configuration across frequencies, etc. In some examples, the UE may be configured to send a reference signal and a subsequent transmission in a coherent manner so that the receiving device can identify that the reference signal and the subsequent transmission are related (e.g., for the receiving device to combine information in two types of messages). However, the coherent manner for sending the reference signal and the subsequent transmission may include ensuring that the relative measurement value between the reference signal and the subsequent transmission falls within an allowable difference, which may not be supported for other use cases (such as bundling two or more reference signals together).

[0061] As described herein, a UE may report a parameterized model related to how a characteristic, such as phase, may drift across time to indicate, for each port used to transmit a reference signal, the rate at which the absolute value of the characteristic (e.g., absolute phase) drifts (e.g., the UE reports a time domain model / parameter regarding how the phase of a reference signal port may vary across time). In some examples, different models may include different transmission parameters that may depend on the time gap between the times when two reference signals are transmitted. For example, a first set of transmission parameters may be used to bundle two reference signals based on a first time gap between the reception of each of the two reference signals at a receiving node, and a second set of transmission parameters may be used to bundle the two reference signals based on a second time gap different from the first time gap. In some examples, if the time difference between receiving each of the two reference signals is greater than a threshold, the reference signals may not be bundled together.

[0062] In various examples, based on different conditions, the model and transmission parameters may be considered valid between the reception of two reference signals. For example, the different conditions may include whether the change in the number of ports used to send the reference signal is not signaled to the UE, the UE remains in a discontinuous reception (DRX) active time, no measurement gap occurs, the active bandwidth part (BWP) remains the same, the dual connectivity and carrier aggregation configurations are not changed, the transmission power of the reference signal meets the power threshold, or any combination thereof, etc. In some examples, the UE may report different model parameters by reference signal resource or resource set identifier (ID), by the number of ports used for reference signal transmission, by the purpose of the reference signal (e.g., positioning, antenna switching, codebook purpose, etc.), by frequency band, by frequency band combination, by component carrier, by BWP, or any combination thereof, etc. The UE may report the model and parameters in a radio resource control (RRC) message, a UE capability message, a medium access control (MAC) control element (MAC-CE), etc. In various examples, these models and parameters may be used for bundling sounding reference signals (SRS), demodulation reference signals (DMRS), additional uplink reference signals, sidelink reference signals, etc.

[0063] Aspects of the present disclosure are initially described in the context of a wireless communication system. In addition, aspects of the present disclosure are illustrated by additional wireless communication systems, phase drift reporting, reference signal resource configuration, and process flows. Aspects of the present disclosure are further illustrated and described with reference to apparatus diagrams, system diagrams, and flow diagrams related to reference signal phase time drift model reporting for reference signal time domain coherence in NR.

[0064] Figure 1 An example of a wireless communication system 100 supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to the disclosed aspects is shown. The wireless communication system 100 may include one or more base stations 105, one or more UEs 115, and a core network 130. In some examples, the wireless communication system 100 may be a long term evolution (LTE) network, an LTE-Advanced (LTE-A) network, an LTE-A Pro network, or an NR network. In some examples, the wireless communication 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.

[0065] Base stations 105 may be dispersed throughout a geographic area to form wireless communication system 100, and may be devices of different forms or with different capabilities. Base stations 105 and UEs 115 may communicate wirelessly via one or more communication links 125. Each base station 105 may provide a coverage area 110 over which UEs 115 and base stations 105 may establish one or more communication links 125. Coverage areas 110 may be examples of geographic areas over which base stations 105 and UEs 115 may support communication of signals according to one or more radio access technologies.

[0066] The UEs 115 may be dispersed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 may be stationary, mobile, or both at different times. The UEs 115 may be devices of different forms or with different capabilities. Figure 1 Some example UEs 115 are shown in FIG. 1. The UEs 115 described herein may be capable of communicating with various types of devices such as other UEs 115, base stations 105, or network devices (e.g., core network nodes, relay devices, integrated access and backhaul (IAB) nodes, or other network devices), such as Figure 1 shown.

[0067] The base stations 105 may communicate with the core network 130 or with each other, or both. For example, the base stations 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). The base stations 105 may communicate with each other via backhaul links 120 (e.g., via X2, Xn, or other interfaces) directly (e.g., directly between the base stations 105) or indirectly (e.g., via the core network 130), or both. In some examples, the backhaul links 120 may be or include one or more wireless links.

[0068] One or more of the base stations 105 described herein may include or may be referred to by a person of ordinary skill in the art as a base station transceiver, a radio base station, an access point, a radio transceiver, a NodeB, an eNodeB (eNB), a next generation NodeB or a giga-NodeB (any of which may be referred to as a gNB), a Home NodeB, a Home eNodeB, or other suitable terminology.

[0069] 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 a "device" may also be referred to as a unit, a station, a terminal or a client, etc. 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. In some examples, 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 communication (MTC) device, etc., which may be implemented in various objects such as appliances, or vehicles, meters, etc.

[0070] The UE 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 base stations 105 and network devices, including macro eNBs or gNBs, small cell eNBs or gNBs, or relay base stations, etc. Figure 1 shown.

[0071] The UE 115 and the base station 105 can communicate with each other wirelessly via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a set of radio spectrum resources having a defined physical layer structure for supporting the communication link 125. For example, a carrier for the communication link 125 may include a portion (e.g., BWP) of a radio spectrum band that operates according to one or more physical layer channels for a given radio access technology (e.g., LTE, LTE-A, LTE-A Pro, NR). Each physical layer channel can carry acquisition signaling (e.g., synchronization signals, system information), control signaling for coordinating operations for the carrier, user data, or other signaling. The wireless communication system 100 can use carrier aggregation or multi-carrier operation to support communication with the UE 115. According to the carrier aggregation configuration, the UE 115 can be configured with multiple downlink component carriers and one or more uplink component carriers. Carrier aggregation can be used with both frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0072] In some examples (e.g., in a carrier aggregation configuration), a carrier may also have acquisition signaling or control signaling to coordinate the operation of other carriers. A carrier may be associated with a frequency channel (e.g., an Evolved Universal Mobile Telecommunications System Terrestrial Radio Access (E-UTRA) Absolute Radio Frequency Channel Number (EARFCN)) and may be located according to a channel grid to be discovered by a UE 115. A carrier may operate in a standalone mode, where initial acquisition and connection may be made via the carrier by a UE 115, or a carrier may operate in a non-standalone mode, where a connection is anchored using a different carrier (e.g., a carrier of the same or different radio access technology).

[0073] The communication link 125 shown in the wireless communication system 100 may include an uplink transmission from the UE 115 to the base station 105, or a downlink transmission from the base station 105 to the UE 115. A carrier may carry downlink or uplink communications (e.g., in FDD mode), or be configured to carry both downlink and uplink communications (e.g., in TDD mode).

[0074] A carrier may be associated with a particular bandwidth of a radio spectrum, and in some examples, the carrier bandwidth may be referred to as a "system bandwidth" of the carrier or wireless communication system 100. For example, the carrier bandwidth may be one of a plurality of determined bandwidths of a carrier for a particular radio access technology (e.g., 1.4 MHz, 3 MHz, 5 MHz, 10 MHz, 15 MHz, 20 MHz, 40 MHz, or 80 MHz (MHz)). The devices of the wireless communication system 100 (e.g., base station 105, UE 115, or both) may have a hardware configuration that supports communication on a particular carrier bandwidth, or may be configured to support communication on one of a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or a UE 115 that supports simultaneous communication via carriers associated with multiple carrier bandwidths. In some examples, each served UE 115 may be configured to operate on a portion (e.g., subband, BWP) or all of a carrier bandwidth.

[0075] The signal waveform transmitted on the carrier may be composed of multiple subcarriers (e.g., using multicarrier modulation (MCM) techniques such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform spread OFDM (DFT-S-OFDM)). In a system employing MCM techniques, a resource element may be composed of a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and the 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). Therefore, the more resource elements received by UE 115 and the higher the order of the modulation scheme, the higher the data rate for UE 115 may be. Wireless communication resources may refer to a combination of radio spectrum resources, time resources, and spatial resources (e.g., spatial layers or beams), and the use of multiple spatial layers may also increase the data rate or data integrity used for communicating with UE 115.

[0076] One or more numerologies for a carrier may be supported, where the numerologies may include subcarrier spacing (Δf) and cyclic prefixes. A carrier may be divided into one or more BWPs with the same or different numerologies. In some examples, a UE 115 may be configured with multiple BWPs. In some examples, a single BWP for a carrier may be active at a given time, and communications for a UE 115 may be restricted to the one or more active BWPs.

[0077] The time interval of the base station 105 or the UE 115 may be expressed as a multiple of a basic time unit, which may be, for example, T s =1 / (Δf max ·N f ) seconds sampling period, where Δf max It can represent the maximum supported subcarrier spacing, and N f The maximum supported discrete Fourier transform (DFT) size may be indicated. Time intervals of communication resources 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., in the range of 0 to 1023).

[0078] Each frame may include multiple consecutively numbered subframes or time slots, and each subframe or time slot may have the same duration. In some examples, the frame may be divided into (in the time domain) subframes, and each subframe may be further divided into multiple time slots. Alternatively, each frame may include a variable number of time slots, and the number of time slots may depend on the subcarrier spacing. Each time slot may include multiple symbol periods (e.g., depending on the length of the cyclic prefix preceding each symbol period). In some wireless communication systems 100, the time slot may also be divided into multiple small time slots containing one or more symbols. In addition to the cyclic prefix, each symbol period may contain one or more (e.g., N f The duration of a symbol period may depend on the subcarrier spacing or frequency band of operation.

[0079] A subframe, a time slot, a mini-slot, or a symbol may be the smallest scheduling unit (e.g., in the time domain) of the wireless communication system 100 and may be referred to as a transmission time interval (TTI). In some examples, the TTI duration (e.g., the number of symbol periods in a TTI) may be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 may be dynamically selected (e.g., in a burst of a shortened TTI (sTTI)).

[0080] Physical channels may be multiplexed on a carrier according to various techniques. Physical control channels and physical data channels may be multiplexed on a downlink carrier using, for example, one or more of a time division multiplexing (TDM) technique, a frequency division multiplexing (FDM) technique, or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for a physical control channel may be defined by a plurality of symbol periods and may extend over a system bandwidth or a subset of a system bandwidth of a carrier. One or more control regions (e.g., CORESETs) may be configured for a set of UEs 115. For example, one or more of UEs 115 may monitor or search a control region to obtain control information according to one or more search space sets, and each search space set may include one or more 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 plurality of control channel resources (e.g., a control channel element (CCE)) associated with a coded information for a control information format having a given payload size. A search space set may include a common search space set configured for sending control information to a plurality of UEs 115 and a UE-specific search space set for sending control information to a particular UE 115.

[0081] Each base station 105 can provide communication coverage via one or more cells (e.g., macro cells, small cells, hot spots, or other types of cells, or any combination thereof). The term "cell" can refer to a logical communication entity used to communicate with the base station 105 (e.g., via a carrier), and can be associated with an identifier used to distinguish adjacent cells (e.g., a physical cell identifier (PCID), a virtual cell identifier (VCID), etc.). In some examples, a cell can also refer to a geographic coverage area 110 or a portion of a geographic coverage area 110 (e.g., a sector) on which a logical communication entity operates. Depending on various factors (such as the capabilities of the base station 105), these cells can range from smaller areas (e.g., structures, subsets of structures) to larger areas. For example, a cell can be or include a building, a subset of a building, an external space between or overlapping geographic coverage areas 110, and the like.

[0082] A macro cell typically covers a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by a UE 115 through a service subscription with a network provider that supports the macro cell. A small cell may be associated with a lower power base station 105 than a macro cell, and the small cell may operate in a frequency band that is the same or different (e.g., licensed, unlicensed) from the macro cell. A small cell may provide unrestricted access to a UE 115 that has a service subscription with a network provider, or may provide unrestricted access to a UE 115 associated with a small cell (e.g., a UE 115 in a closed subscriber group (CSG), a UE 115 associated with a user at home or in an office). A base station 105 may support one or more cells, and may also use one or more component carriers to support communications on one or more cells.

[0083] In some examples, 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 to different types of devices.

[0084] In some examples, base stations 105 may be mobile and thus provide communication coverage for mobile geographic coverage areas 110. In some examples, 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. In other examples, overlapping geographic coverage areas 110 associated with different technologies may be supported by different base stations 105. The wireless communication system 100 may, for example, include a heterogeneous network in which different types of base stations 105 provide coverage for various geographic coverage areas 110 using the same or different radio access technologies.

[0085] The wireless communication system 100 may support synchronous operation or asynchronous operation. For synchronous operation, the base stations 105 may have similar frame timing, and transmissions from different base stations 105 may be approximately aligned in time. For asynchronous operation, the base stations 105 may have different frame timing, and in some examples, transmissions from different base stations 105 may not be aligned in time. The techniques described herein may be used for synchronous operation or asynchronous operation.

[0086] Some UEs 115, such as MTC or IoT devices, may be low-cost or low-complexity devices and may provide automatic communication between machines (e.g., via machine-to-machine (M2M) communication). M2M communication or MTC may refer to data communication technology that allows devices to communicate with each other or with a base station 105 without human intervention. In some examples, 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 that utilizes the information or presents the information to a person interacting with the application or program. Some UEs 115 may be designed to collect information or implement automatic 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 billing.

[0087] The wireless communication system 100 can be configured to support ultra-reliable communication or low-latency communication or various combinations thereof. For example, the wireless communication system 100 can be configured to support ultra-reliable low-latency communication (URLLC) or mission-critical communication. UE115 can be designed to support ultra-reliable, low-latency or critical functions (e.g., mission-critical functions). Ultra-reliable communication can include private communication or group communication, and can 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). Support for mission-critical functions can include prioritization of services, and mission-critical services can be used for public safety or general commercial applications. The terms ultra-reliable, low-latency, mission-critical, and ultra-reliable low-latency can be used interchangeably in this article.

[0088] In some examples, UE 115 may also be able to communicate directly with other UE 115 via a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UEs 115 utilizing D2D communication may be within a geographic coverage area 110 of a base station 105. Other UEs 115 in this group may be outside the geographic coverage area 110 of the base station 105 or may not be able to receive transmissions from the base station 105. In some examples, a group of UEs 115 communicating via D2D communication may utilize a one-to-many (1:M) system, in which each UE 115 transmits to each other UE 115 in the group. In some examples, the base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between UEs 115 without the involvement of the base station 105.

[0089] In some systems, the D2D communication link 135 can be an example of a communication channel (such as a sidelink communication channel) between vehicles (e.g., UE 115). In some examples, vehicles can communicate using vehicle-to-everything (V2X) communication, vehicle-to-vehicle (V2V) communication, or a combination of these communications. Vehicles can signal information related to traffic conditions, signal scheduling, weather, safety, emergency situations, or any other information related to the V2X system. In some examples, vehicles in a V2X system can communicate with roadside infrastructure (such as roadside units), or use vehicle-to-network (V2N) communication to communicate with the network via one or more network nodes (e.g., base station 105), or communicate with both roadside infrastructure and the network.

[0090] The core network 130 may provide user authentication, access authorization, tracking, Internet Protocol (IP) connections, and other access, routing, or mobility functions. The core network 130 may be an evolved packet core (EPC) or a 5G core (5GC), which may include at least one control plane entity (e.g., a mobility management entity (MME), an access and mobility management function (AMF)) for managing access and mobility and at least one user plane entity (e.g., a serving gateway (S-GW), a packet data network (PDN) gateway (P-GW), or a user plane function (UPF)) for routing packets or interconnections to an external network. The control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management for UE 115 served by a base station 105 associated with the core network 130. User IP packets may be transmitted by a user plane entity, which may provide IP address allocation and other functions. The user plane entity may be connected to a network operator IP service 150. Operator IP services 150 may include access to the Internet, Intranet(s), IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0091] Some of the network devices, such as base stations 105, may include subcomponents, such as access network entities 140, which may be examples of access node controllers (ANCs). Each access network entity 140 may communicate with a UE 115 through one or more other access network transport entities 145, which may be referred to as radio heads, smart radio heads, or transmit / receive points (TRPs). Each access network transport entity 145 may include one or more antenna panels. In some configurations, the 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 merged into a single network device (e.g., base station 105).

[0092] The wireless communication system 100 may operate using one or more frequency bands typically in the range of 300 megahertz (MHz) to 300 gigahertz (GHz). Typically, the region of 300 MHz to 3 GHz is referred to as the ultra-high frequency (UHF) region or decimeter band, because wavelengths range from approximately one decimeter to one meter long. UHF waves may be blocked or redirected by buildings and environmental features, but the waves can penetrate structures sufficiently to allow macro cells to provide service to UEs 115 located indoors. Transmission of UHF waves may be associated with smaller antennas and shorter distances (e.g., less than 100 kilometers) compared to transmission using lower frequencies and longer waves in the high frequency (HF) or very high frequency (VHF) portions of the spectrum below 300 MHz.

[0093] The wireless communication system 100 can utilize licensed radio spectrum bands and unlicensed radio spectrum bands. For example, the wireless communication system 100 can use license assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in unlicensed bands such as the 5 GHz industrial, scientific, and medical (ISM) band. When operating in an unlicensed radio spectrum band, devices such as base stations 105 and UEs 115 can use carrier sensing for conflict detection and avoidance. In some examples, operations in unlicensed bands can be based on carrier aggregation configurations and component carriers operating in licensed bands (e.g., LAA). Operations in unlicensed spectrum can include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, etc.

[0094] The base station 105 or UE 115 may be equipped with multiple antennas that may be used to employ techniques such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communications, or beamforming. The antennas of the base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels that may support MIMO operations, or transmit or receive beamforming. For example, one or more base station antennas or antenna arrays may be co-located at an antenna assembly such as an antenna tower. In some examples, the antennas or antenna arrays associated with the base station 105 may be located at different geographic locations. The base station 105 may have an antenna array having multiple rows and columns of antenna ports that the base station 105 may use to support beamforming for communications with the UE 115. Similarly, the UE 115 may have one or more antenna arrays that may support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals sent via the antenna ports.

[0095] The base station 105 or UE 115 can use MIMO communication to exploit multipath signal propagation and increase spectral efficiency by sending or receiving multiple signals via different spatial layers. This technology may be referred to as spatial multiplexing. Multiple signals may be sent, for example, by a transmitting device via different antennas or different combinations of antennas. Similarly, multiple signals may be received by a 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 for channel measurement and reporting. MIMO technology includes single-user MIMO (SU-MIMO) in which multiple spatial layers are sent to the same receiving device, and multi-user MIMO (MU-MIMO) in which multiple spatial layers are sent to multiple devices.

[0096] 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 and direct 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 signals transmitted via antenna elements of an antenna array so that some signals propagating at a particular orientation relative to the antenna array experience constructive interference, while other signals experience destructive interference. Adjustments to signals transmitted via antenna elements may include the transmitting device or the receiving device applying an amplitude offset, a phase offset, or both to signals carried via antenna elements associated with the device. Adjustments associated with each of the antenna elements may be defined by a set of beamforming weights associated with a particular orientation (e.g., relative to the antenna array of the transmitting device or the receiving device, or relative to some other orientation).

[0097] The base station 105 or the UE 115 may use beam scanning techniques as part of a beamforming operation. For example, the base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with the UE 115. The base station 105 may send some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) multiple times in different directions. For example, the base station 105 may send signals according to different sets of beamforming weights associated with different transmission directions. Transmissions in different beam directions may be used to identify (e.g., by a transmitting device (such as the base station 105) or by a receiving device (such as the UE 115)) the beam direction for later transmission or reception by the base station 105.

[0098] Some signals, such as data signals associated with a particular receiving device, may be sent by base station 105 in a single beam direction (e.g., a direction associated with a receiving device such as UE 115). In some examples, a beam direction associated with transmissions along a single beam direction may be determined based on signals sent in one or more beam directions. For example, UE 115 may receive one or more of the signals sent by base station 105 in different directions and may report to base station 105 an indication of the signal received by UE 115 with the highest signal quality or with other acceptable signal qualities.

[0099] In some examples, transmission by a device (e.g., by a base station 105 or a UE 115) may be performed using multiple beam directions, and the device may generate a combined beam for transmission (e.g., from a base station 105 to a UE 115) using a combination of digital precoding or radio frequency beamforming. The UE 115 may report feedback indicating 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 subbands. The base station 105 may send 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. 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 codebook, a linear combination codebook, a port selection codebook). Although these techniques are described with reference to signals sent by base station 105 in one or more directions, UE 115 may employ similar techniques for sending signals multiple times in different directions (e.g., for identifying a beam direction for subsequent transmission or reception by UE 115) or for sending signals in a single direction (e.g., for sending data to a receiving device).

[0100] When receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from the base station 105, the receiving device (e.g., UE 115) can try multiple reception configurations (e.g., directional listening). For example, the receiving device can try multiple reception directions by: receiving via different antenna subarrays; processing the received signals according to different antenna subarrays; receiving according to different reception beamforming weight sets (e.g., different directional listening weight sets) applied to the signals received at multiple antenna elements of the antenna array; or processing the received signals according to different reception beamforming weight sets applied to the signals received at multiple antenna elements of the antenna array, any of which can be referred to as "listening" according to different reception configurations or reception directions. In some examples, the receiving device can use a single reception configuration to receive along a single beam direction (e.g., when receiving data signals). The single reception configuration can be aligned in a beam direction determined based on listening according to different reception configuration directions (e.g., a beam direction determined to have the highest signal strength, the highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0101] The wireless communication system 100 may be a packet-based network that operates according to a layered protocol stack. In the user plane, the communication at the bearer or packet data convergence protocol (PDCP) layer may be IP-based. The radio link control (RLC) layer may perform data packet segmentation and reassembly to communicate via logical channels. The medium access control (MAC) layer may perform priority processing and multiplex logical channels into transport channels. The MAC layer may also support retransmission at the MAC layer using error detection techniques, error correction techniques, or both to improve link efficiency. In the control plane, the radio resource control (RRC) protocol layer may provide the establishment, configuration, and maintenance of an RRC connection between a UE 115 and a base station 105 or a core network 130 that supports radio bearers for user plane data. At the physical layer, transport channels may be mapped to physical channels.

[0102] UE 115 and base station 105 can support retransmission of data to increase the possibility of successfully receiving data. Hybrid automatic repeat request (HARQ) feedback is a technology for increasing the possibility of correctly receiving data through communication link 125. HARQ can include a combination of error detection (e.g., using cyclic redundancy check (CRC)), forward error correction (FEC) and retransmission (e.g., automatic repeat request (ARQ)). HARQ can improve the throughput at the MAC layer under poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, the device can support HARQ feedback for the same time slot, where the device can provide HARQ feedback in a specific time slot for data received in a previous symbol in the time slot. In other cases, the device can provide HARQ feedback in a subsequent time slot or according to some other time intervals.

[0103] When transmitting reference signals to different wireless devices, the UE 115 may transmit the reference signals on reference signal resources that span multiple adjacent symbols (e.g., one (1), two (2), four (4), etc. adjacent symbols anywhere in a time slot, up to 12 adjacent symbols), and may transmit the reference signals on one or more ports (e.g., up to four (4) ports) according to the reference signal resources. In addition, the UE 115 may transmit the reference signals in reference signal resource sets, each of which includes one or more reference signal resources, as described above. For example, the UE 115 may be configured (e.g., by the base station 105, a network device, etc.) with multiple reference signal resources, which may be grouped into reference signal resource sets according to the usage of the reference signal (e.g., positioning, antenna switching, codebook-based, non-codebook-based, beam management, etc.). In some examples, the UE 115 and the receiving device of the reference signal may use different mechanisms to enhance the reference signal capacity and / or coverage for processing (e.g., transmitting, receiving, decoding, etc.) the transmission of the reference signal. For example, different mechanisms may include time bundling of reference signals (eg, bundling one or more reference signal resources across time), increased repetitions of reference signal transmissions, partial sounding across frequency, and the like.

[0104] As part of time bundling of reference signals, UE 115 may send reference signals in one or more reference signal resources across time (e.g., for a particular purpose), where it is desired that UE 115 send the reference signals in such a manner that enables a receiving device (e.g., base station 105, a second UE 115, an additional wireless device, etc.) to coherently bundle the reference signals across time. For example, UE 115 may send the reference signals in such a manner that enables the receiving device to align phases for bundling the reference signals. Accordingly, the receiving device may bundle reference signals sent by UE 115 within a time window (e.g., across time slots, multiple reference signal resources in the same time slot, etc.), UE 115 may send the reference signals to enable bundling for a configured duration, or similar techniques may be used by UE 115 and / or receiving devices to support bundling.

[0105] In some examples, UE 115 can be configured for a coherent uplink MIMO configuration. For example, as part of a coherent uplink MIMO configuration, UE 115 can send one or more reference signals on multiple ports, and then send a subsequent uplink message (e.g., a physical uplink shared channel (PUSCH), a sidelink transmission, etc.) at a later time, where the subsequent uplink message is sent in a manner coherent to the one or more reference signals. The coherent manner between sending the reference signal and the subsequent uplink message can include: when UE 115 sends the reference signal, in response, the receiving device of the reference signal (e.g., base station 105) can send a precoder indication to UE 115 before receiving the subsequent uplink message (e.g., a transmitted precoding matrix indicator (TPMI)), and UE 115 can apply a precoder to the subsequent uplink transmission based on the precoder indication.

[0106] Additionally, as part of a coherent uplink MIMO configuration, Table 1 below may list allowable differences (e.g., maximum allowable differences) between phase errors and measured relative powers between different physical antenna ports in any time slot within a specified time window starting from the last transmitted reference signal on the same physical antenna port. These allowable differences may be configured for purposes of subsequent uplink transmissions (e.g., codebook or non-codebook purposes), where corresponding measurements measured for the last transmitted reference signal are compared with measurements for subsequent uplink transmissions to indicate that the last transmitted reference signal and the subsequent uplink transmission are coherent. For the reference signal transmission and for the duration of the time window, the allowable differences indicated in Table 1 may apply when the uplink transmission power at each physical antenna port is greater than zero (0) decibel milliwatts (dBm). Different difference measurements may be validated using a test metric of effective isotropic radiated power (EIRP) (e.g., a link may correspond to a beam peak direction, where the angle of the link is measured for the phase and power). In addition, the allowable differences listed in Table 1 may include relative phase and power errors in a given time slot compared to the phase and power errors measured at the last reference signal transmitted. The allowable differences listed in Table 1 may be example values ​​for a given time window to achieve coherence between two uplink signals (e.g., to allow a receiving device to determine coherence based on satisfying the measured difference).

[0107] Table 1 - Relative measurements for coherent uplink MIMO

[0108] The relative phase error difference Relative power error difference Time Window 40 degrees 4dB 20ms

[0109] Based on the relative measurement value, the receiving device can identify that the reference signal sent by UE 115 and the subsequent uplink message sent by UE 115 are coherent (for example, if the reference signal satisfies the allowable difference between the subsequent uplink message), and can use information from the reference signal to process the subsequent uplink transmission. For example, the receiving device can combine information from the reference signal and the subsequent uplink message based on coherence to fully decode the subsequent uplink message. However, the use of relative measurement values ​​to determine coherence may not be used to combine other types of signaling or identify consistency across other types of signaling. For example, the time bundling of reference signals as described above can benefit from a configuration for sending multiple reference signals, which enables the receiving device of the multiple reference signals to identify that each of the reference signals is related to other reference signals used for bundling, but the relative measurement values ​​between each of the reference signals may not indicate the relationship or implement bundling.

[0110] The wireless communication system may support efficient techniques for UE 115 to report time domain models and parameters to indicate how the phase of a port (e.g., a characteristic of a port) used to send a reference signal may vary across time (e.g., using an absolute measurement of the phase). For example, UE 115 may determine one or more transmission parameter sets associated with a reference signal type, wherein the one or more transmission parameter sets may enable a receiving device to bundle reference signals of the reference signal type. Subsequently, the UE may send an indication of these one or more transmission parameter sets to a receiving device, wherein the indication is associated with how the phase (e.g., a characteristic) of a port of UE 115 varies across time. Based on the indication of one or more transmission parameter sets, the receiving device may receive multiple reference signals and bundle (e.g., combine) multiple reference signals. Subsequently, the UE and the receiving device may then communicate based on the indication of the one or more transmission parameter sets and the bundled reference signals.

[0111] Figure 2 An example of a wireless communication system 200 that supports reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. In some examples, the wireless communication system 200 can implement aspects of the wireless communication system 100, or can be implemented by aspects of the wireless communication system 100. For example, the wireless communication system 200 may include a base station 105-a and a UE 115-a, which may be respectively as shown in reference Figure 1205 and 210. In addition, UE 115-a may send configuration information to base station 105-a on resources of carrier 205, wherein the configuration information enables UE 115-a and base station 105-a to further communicate on resources of carrier 210. In some examples, carrier 205 and carrier 210 may be the same carrier, different carriers, or partially overlapping carriers, or any combination thereof.

[0112] As described herein, UE 115-a may report a time domain model and / or one or more parameters regarding how the phase of a port used to transmit a reference signal varies over time. For example, UE 115-a may send transmission parameters 215 to base station 105-a on resources of carrier 205 to indicate how the phase of different ports used to transmit one or more reference signals 220 (e.g., on resources of carrier 210) varies. Figure 1 As discussed, UE 115-a may transmit reference signal 220 based on a reference signal resource set including one or more reference signal resources (e.g., each reference signal resource consisting of one or more adjacent symbols). Accordingly, UE 115-a may transmit each reference signal resource in the reference signal resource set based on transmission parameters 215 to enable base station 105-a to bundle the reference signal resources. For example, first reference signal 220-a may be considered as a first reference signal resource of a first reference signal resource set, second reference signal 220-b may be considered as a second reference signal resource of the first reference signal resource set, and third reference signal 220-c may be considered as a third reference signal resource of the first reference signal resource set, wherein each of these reference signals 220 in the first reference signal resource set is transmitted based on transmission parameters 215.

[0113] In some examples, the transmission parameters 215 may indicate a phase of one of the reference signals 220 and / or how the phase varies across time for the reference signal 220, such that the base station 105-a may bundle the reference signals 220 together (e.g., for certain uses) based on the phase of the reference signals 220 indicated and / or how the phase varies for the reference signals 220. For example, the base station 105-a may bundle the first reference signal 220-a, the second reference signal 220-b, and the third reference signal 220-c (e.g., reference signal resources) to perform a process according to the intended use of the reference signals 220. In some examples, the intended use of the reference signals 220 may include: the base station 105-a determining a location of the UE 115-a based on the reference signals 220, performing antenna selection for the base station 105-a and / or the UE 115-a based on the reference signals 220, determining whether to use a codebook for subsequent communications with the UE 115-a based on the reference signals 220, performing a beam refinement process based on the reference signals 220, and the like. As such, the base station 105 - a may use the transmission parameters 215 to identify a phase of the reference signal 220 to enable bundling, determine whether the reference signal 220 may be bundled, or both.

[0114] When sending an indication of the transmission parameter 215, the UE 115-a may indicate a time window in which the transmission parameter 215 is valid or constant. For example, as shown, the transmission parameter 215 may be applied to the reference signal 220 from a first time (t1) to a second time (t2). Thus, if the base station 105-a receives the reference signal 220 within a time window (e.g., a time slot) spanning from t1 to t2, the base station 105-a may determine that the transmission parameter 215 is applicable to the reference signal 220 (e.g., to determine the phase of the reference signal 220) to bundle the reference signal 220 with additional reference signals 220 received during the time window. For example, different time windows (e.g., time slots) may correspond to different transmission parameters 215. That is, a first set of transmission parameters 215 may be applied to a reference signal 220 sent / received between a first time and a second time (e.g., from 0 ms to 10 ms), and a second set of transmission parameters 215 may be applied to a reference signal 220 sent / received between a second time and a third time (e.g., from 10 ms to 40 ms), wherein the first set of transmission parameters 215 and the second set of transmission parameters 215 may be the same or different.

[0115] The transmission parameters 215 may include a report of a parameterized model of how the phase may drift across time, which would indicate the rate of absolute phase drift for each port used to transmit the reference signal 220. For example, the UE 115-a may indicate a first model for transmission of the reference signal 220 for a time window from t1 to t2, where the first model is based on a time phase drift rate (r drift ). The following equation 1 can represent the first model.

[0116] for

[0117] It can represent the phase of port i at a given time (e.g., t1, t2, etc.), r drift may represent the temporal phase drift rate, δ(t) may represent the variance of the uncertainty (eg, error rate) of the parameters in the first model at a given time, and The threshold absolute value may represent a time window in which a model (e.g., a first model) is valid. In some examples, UE 115-a may send an indication of the variance of the uncertainty of the parameters in the first model (δ(t)), or the variance of the uncertainty may be determined by base station 105-a (e.g., a defined value). In addition, the variance of the uncertainty of the parameters in the first model may be based on |δ(t)|≤Δ model To indicate or define, where Δ model Represents the threshold variance value for the first model.

[0118] Additionally or alternatively, if the temporal phase drift rate is unknown to UE 115-a, or different models apply to reference signal 220 during the same or different time windows, UE 115-a may indicate a second model for transmission of the reference signal for the time window from t1 to t2. Equation 2 below may represent the second model.

[0119] for

[0120] It can be expressed as the phase of port i at a given time (e.g., t1, t2, etc.), φ max may represent a threshold absolute phase difference value between the phases of different reference signals 220 sent within a time window, and A threshold absolute value may be set at a time window representing a time window in which a model (eg, the second model) is valid.

[0121] In some examples, UE 115-a may send a report of the parameterized model or the values ​​of the parameters of the model in the indication of the transmission parameters 215 on a port by port basis. For example, UE 115-a may send reference signals 220 using multiple ports (e.g., physical antenna ports, virtual antenna ports, etc.) (e.g., a first port for a first reference signal 220-a, a second port for a second reference signal 220-b, a third port for a third reference signal 220-c, the same port for two of the reference signals 220 and a different port for the third reference signal, the same port for each of the reference signals 220, etc.), where the parameterized model, the values ​​of the parameters, or both are specific to the corresponding ports. In some examples, UE 115-a may perform a test or calibration phase for determining the model of the reference signal 220 and the transmission parameters 215 to enable base station 105-a to bundle the reference signals 220, where the test or calibration phase occurs prior to sending the indication of the transmission parameters 215.

[0122] Additionally, UE 115-a may indicate the magnitude conditions for the upper limits of the two models defined above in Equations 1 and 2. Equations 3 and 4 below may represent the magnitude conditions.

[0123] for

[0124] for

[0125] A may represent the power amplitude of the reference signal 220 transmitted on port i at a given time (eg, t2, t1, etc.), max and may represent a threshold absolute power difference between two reference signals 220 sent within a time window, and and A may represent a threshold absolute value of a time window in which the amplitude condition is to be satisfied. For example, Equation 3 may indicate an amplitude condition (e.g., less than or equal to a first threshold absolute power difference value, A) to be satisfied for bundling the reference signal 220 received at t1 and t2. max ), where t2 and t1 are less than or equal to the first threshold absolute value of the time window (e.g., Additionally or alternatively, Equation 4 may indicate an amplitude condition (eg, less than or equal to a first threshold absolute power difference, A ) to be satisfied for bundling the reference signal 220 received at t1 and t2. max ), where t2 and t1 are greater than a first threshold absolute value of the time window but less than or equal to a second threshold absolute value of the time window (e.g., ).

[0126] In some examples, UE 115-a may not report r drift values, but the reporting base station 105-a (e.g., the receiving device) may be configured during this period so that the reported model / parameters (e.g., r drift For example, UE 115-a may report the time during which r drift is the effective threshold time difference t 2 -t 1 (e.g., a maximum time difference). Subsequently, for any two (2) reference signals 220 that are transmitted more than a threshold time difference apart, the accuracy condition for the absolute difference in phase (e.g., Equations 1, 2, 3, and / or 4) may not be satisfied. In addition, if the time between the reception of the two reference signals 220 exceeds a threshold time difference t 2 -t 1 , then the base station 105-a may determine not to bundle the two reference signals 220 together based on the transmission parameter 215 using the parameters and models indicated above by equations 1, 2, 3, and 4. That is, the UE 115-a may not guarantee that the conditions and parameters indicated above by equations 1, 2, 3, and 4 are within the threshold time difference t 2 -t 1 Valid outside (for example, if the threshold time difference exceeds the corresponding T thres value, the base station 105-a may not use the corresponding equation for determining the phase of the port used to send the reference signal 220 to bundle the reference signal 220).

[0127] Furthermore, the UE 115 - a and the base station 105 - a may determine whether a model and / or parameters of the model are valid between two reference signals 220 if any, all, or any combination of the following constraints are satisfied within a specified time window. For example, if no change in the number of ports used to send reference signals or a configuration change for uplink channels (e.g., a change in the configuration for PUSCH, such as a change in PUSCH-config) is signaled to UE 115-a, if UE 115-a remains in DRX active time (e.g., UE 115-a does not enter an 'off' period of the DRX configuration), if no measurement gap occurs, if the active BWP remains the same for UE 115-a, the dual connectivity and carrier aggregation configuration remains unchanged for UE 115-a (e.g., UE 115-a is not configured with or deconfigured with a primary secondary cell (PScell), one or more secondary cells (SCells), etc.), the transmission power of the reference signal 220 satisfies a threshold (e.g., reference signal transmission power ≥ X dBm, where X is another parameter of the UE capability or model reported by UE 115-a), or any combination thereof, then the model and / or parameters of the model may be deemed valid. When any of the above constraints occurs, and for any reference signal (eg, event) sent / received before the first time (t1) and after the second time (t2), the model may be changed to a second model defined by Equation 2 above.

[0128] In some examples, UE 115-a may report different model parameters and transmission parameters 215 (e.g., r drift , A max ,φ max , ). For example, different transmission characteristics may include specific model parameters and transmission parameters 215 applicable to the respective transmission characteristics. That is, the UE 115-a may send specific model parameters and transmission parameters 215 per reference signal resource or reference signal resource set identifier, per number of ports used to send reference signal resources, per reference signal usage (e.g., different models / parameters may be applicable for antenna switching compared to reference signals with codebook-based usage), per frequency band, per frequency band combination, per CC, per BWP, or any combination thereof. Accordingly, the UE 115-a may use and indicate a first set of transmission parameters 215 applicable to a first transmission characteristic, a second set of transmission parameters 215 applicable to a second transmission characteristic, and so on. Subsequently, the base station 105-a (e.g., or an additional receiving device) may identify the transmission characteristic of the reference signal 220 received from the UE 115-a and apply the corresponding transmission parameters 215 for the identified transmission characteristic to bundle the reference signals 220 (e.g., to determine the phases of the ports for the bundled reference signals 220).

[0129] Additionally or alternatively, UE 115-a may send reports of different model parameters based on differences from a base model parameter set. For example, UE 115-a may report a baseline transmission parameter set (e.g., ), and then differentially sending an indication of the value of different sets of transmission parameters (e.g., or a single transmission parameter) for different reference signal resources or sets of reference signal resources, which is the difference of the value in the baseline transmission parameter set (e.g., signaling the difference between the baseline transmission parameter set and the transmission parameters for the reference signal resource or set of reference signal resources).

[0130] In some examples, UE 115-a may report transmission parameters via RRC signaling (e.g., higher layer signaling), in a UE capability message, a MAC-CE, or any combination thereof. In addition, the techniques for indicating transmission parameters 215 to enable base station 105-a to bundle reference signals 220 may be used for different types of reference signals. For example, base station 105-a may use transmission parameters 215 to bundle SRS, DMRS, or additional uplink reference signals sent by UE 115-a across time. In this way, UE 115-a may report the same model that may be used for different types of reference signals (e.g., for both SRS and DMRS), or may report different models and / or parameters of the model according to the type of reference signal (e.g., a first model / set of model parameters for bundling SRS, a second model / set of model parameters for bundling DMRS, etc.).

[0131] Furthermore, although the base station 105-a is shown communicating with the UE 115-a in the example of the wireless communication system 200, additional wireless devices (e.g., a second UE 115, another device capable of communicating with the UE 115-a, etc.) may use the techniques described herein. For example, the UE 115-a may send the transmission parameters 215 to the second UE 115 to enable the second UE 115 to bundle two or more sidelink reference signals sent by the UE 115-a.

[0132] Figure 3A , Figure 3B and Figure 3C An example of a phase drift report 300, a phase drift report 301, and a phase drift report 302 that support reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. In some examples, the phase drift reports 300, 301, and 302 can implement or be implemented by aspects of the wireless communication system 100, the wireless communication system 200, or both. For example, the phase drift reports 300, 301, and 302 can indicate how the phase of a port used by a UE 115 to send a reference signal to a receiving device (e.g., a base station 105, an additional UE 115, etc.) varies across time.

[0133] The phase drift report 300 can indicate how the phase of a port changes over time (e.g., as the time slot index increases) for different transmission powers. For example, a first phase drift 305 can indicate a maximum power transmission, and a second phase drift 310 can indicate a 0 dBm transmission. As shown, as the transmission power increases, the phase of the port changes across time in an unpredictable manner, where the second phase drift 310 (e.g., indicating a 0 dBm transmission) is more linear than the first phase drift 305 (e.g., indicating a maximum power transmission).

[0134] Phase drift report 301 may include different phase drift values ​​315 (eg, r 115 ) that UE 115 may report to represent different phase drifts (eg, for different power levels). drift ). For example, UE 115 may determine and report a first phase drift value 315-a for a first phase drift 305 and a second phase drift value 315-b for a second phase drift 310. In some examples, UE 115 may indicate different phase drift values ​​315 when sending an indication of a transmission parameter for a receiving device to use for bundling reference signals sent from a port, where the receiving device may use the phase drift value 315 to determine the phase of the reference signal for bundling. However, the phase drift value 315 may be determined across a larger time, which may result in the phase drift value 315 not being as accurate as a representation of the phase of the port.

[0135] The phase drift report 302 may represent a piecewise linear model 320 report, which the UE 115 may indicate when sending an indication of the transmission parameters to a receiving device. For example, the UE 115 may indicate different time windows in which the transmission parameters may be considered or interpreted as valid / constant, such that the phase drift rate may be considered constant during the time windows, thereby generating the piecewise linear model 320. As shown, the UE 115 may determine and indicate a first set of transmission parameters for a first phase drift rate from a first time (t0) to a second time (t1), a second set of transmission parameters for a second phase drift rate from the second time (t1) to a third time (t2), a third set of transmission parameters for a third phase drift rate from the third time (t2) to a fourth time (t3), and a fourth set of transmission parameters for a fourth phase drift rate from the fourth time (t3) to a fifth time (t4). Accordingly, the receiving device may determine (eg, estimate) phases of ports for different reference signals based on one or more transmission parameter sets and corresponding phase drift rates to enable bundling of the reference signals.

[0136] Figure 4A and Figure 4B Examples of reference signal resource configurations 400 and 401 that support reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure are shown, respectively. In some examples, reference signal resource configurations 400 and 401 can implement aspects of wireless communication system 100, wireless communication system 200, or both or can be implemented by them. For example, UE 115 can use reference signal resource configurations 400 and 401 to send one or more reference signals to a receiving device (e.g., base station 105, additional UE 115, etc.). Subsequently, as described herein, as part of a mechanism, the receiving device can bundle one or more reference signals to enhance reference signal capacity and / or coverage for processing reference signals. In this way, UE 115 can send an indication of one or more transmission parameter sets to the receiving device to achieve bundling.

[0137] For reference signal resource configuration 400, when transmitting a reference signal to a receiving device, UE 115 may use one or more reference signal resources 405 to transmit the reference signal. For example, reference signal resources 405 may span 'X' symbols 410 in a time slot (e.g., 1, 2, 4 adjacent symbols 410, up to 12 symbols), where each reference signal resource 405 has one or more ports (e.g., up to four (4) ports). In some examples, all ports of reference signal resources 405 (e.g., SRS resources) may be probed in each symbol. In addition, as shown, UE 115 may transmit reference signal resources 405 in the last six (6) symbols 410 of a time slot. Additionally or alternatively, UE 115 may transmit reference signal resources 405 on multiple adjacent symbols 410 within a time slot. In some examples, UE 115 may transmit the reference signal in the time slot after transmitting an uplink channel (e.g., PUSCH). Furthermore, in some examples, UE 115 may transmit each symbol 410 of reference signal resource 405 using the same port.

[0138] For reference signal resource configuration 401, UE 115 may transmit one or more reference signal resources 405 using reference signal resource set 415. For example, reference signal resource set 415 may include multiple reference signal resources 405 transmitted by UE 115. In some examples, UE 115 may transmit reference signal resource set 415 aperiodically (e.g., triggered or signaled via downlink control information (DCI)), semi-persistently, periodically, and so on.

[0139] In addition, the UE 115 may be configured with multiple reference signal resources 405, which may then be grouped into different reference signal resource sets 415 based on the usage configured for the reference signal, the reference signal resource 405, and / or the reference signal resource set 415 (e.g., positioning, antenna switching, codebook-based, non-codebook-based, beam management, etc.). For example, a first reference signal resource set 415-a may include a first reference signal resource 405-a, a second reference signal resource 405-b, a third reference signal resource 405-c, and a fourth reference signal resource 405-d, wherein the first reference signal resource set 415-a is configured for a first purpose (e.g., antenna selection). In addition, the second reference signal resource set 415-b may include a fourth reference signal resource 405-d and is configured for a second purpose (e.g., codebook-based). In some examples, the reference signal transmission may be wideband or sub-band, and the bandwidth used for the reference signal transmission may include a multiple of four (4) physical resource blocks.

[0140] Based on the techniques described herein, a receiving device may bundle different reference signal resources 405 that make up reference signal resource set 415. For example, one or more transmission parameter sets indicated by UE 115 may enable the receiving device to determine different characteristics / parameters (e.g., phase) of each reference signal resource 405 for bundling and whether the transmission parameters may be used for bundling.

[0141] Figure 5 An example of a process flow 500 for supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to the disclosed aspects is shown. In some examples, the process flow 500 can implement or be implemented by aspects of the wireless communication system 100, the wireless communication system 200, or both. For example, the process flow 500 can include a UE 115-b, which can be as described in reference Figure 1 4. Additionally, process flow 500 may include a receiving device 505, which may be an example of a base station 105, an additional UE 115 (eg, a second UE 115), an additional wireless device, or any combination thereof as described herein.

[0142] In the following description of process flow 500, operations between UE 115-b and receiving device 505 may be sent in a different order than shown, or operations performed by UE 115-b and receiving device 505 may be performed in a different order or at a different time. Certain operations may be omitted from process flow 500, or other operations may be added to process flow 500. It will be understood that although base station UE 115-b and receiving device 505 are shown performing many operations of process flow 500, any wireless device may perform the operations shown.

[0143] At 510, UE 115-b may determine one or more transmission parameter sets associated with a reference signal type, wherein the one or more transmission parameter sets are determined to enable the receiving device 505 to bundle reference signals of the reference signal type. For example, the reference signal type may include an SRS, a DMRS, an uplink reference signal, a sidelink reference signal, or any combination thereof. In some examples, a set of one or more transmission parameter sets may include a time phase drift rate, one or more time difference thresholds, an amplitude threshold, a phase threshold, or any combination thereof. Additionally or alternatively, the one or more transmission parameter sets may include a time domain model for implementing bundling of reference signals at the receiving device 505.

[0144] In some examples, UE 115-b may determine each transmission parameter set in one or more transmission parameter sets based on a transmission characteristic applicable to each transmission parameter set. For example, the transmission characteristic applicable to each transmission parameter set may include a reference signal resource for sending a reference signal, a reference signal resource set identifier for sending a reference signal, a number of ports for sending a reference signal, a purpose for using a reference signal, a frequency band for sending a reference signal, a frequency band combination for sending a reference signal, a CC for sending a reference signal, a BWP for sending a reference signal, a reference signal type, or any combination thereof.

[0145] At 515, UE 115-b may send an indication of one or more sets of transmission parameters to receiving device 505, wherein the indication is associated with how a characteristic of one or more ports of UE 115-b varies across time. For example, the characteristic of how one or more ports of UE 115-b varies across time may include a phase of the one or more ports (e.g., which varies across time). In some examples, UE 115-b may send an indication of one or more sets of transmission parameters via RRC signaling, a UE capability message, a MAC-CE, or any combination thereof. In addition, UE 115-b may send an indication of one or more sets of transmission parameters per port of UE 115-b. In some examples, UE 115-b may send a variance of uncertainty of one or more sets of transmission parameters, wherein the variance of the uncertainty includes an error rate.

[0146] Additionally or alternatively, UE 115-b may send a baseline transmission parameter set, wherein each of the one or more transmission parameters includes a different transmission parameter set based on the baseline transmission parameter set (e.g., a differential transmission parameter set based on the baseline set), and communicating with receiving device 505 may be based on sending the baseline transmission parameter set. In some examples, UE 115-b may send an indication of the one or more transmission parameter sets based on: the one or more transmission parameter sets are valid between transmissions of two reference signals of the reference signal type (wherein the one or more transmission parameter sets are valid based on the number of ports used to transmit the two reference signals not changing), the DRX activity time remains active for UE 115-b, whether a measurement gap occurs between transmissions of the two reference signals, maintaining an active BWP, maintaining a dual connectivity configuration, maintaining a carrier aggregation configuration, the transmission power of the two reference signals satisfying a power threshold, or any combination thereof.

[0147] At 520, UE 115-b may send a time gap indication (e.g., an indication of a time window) for each of the one or more sets of transmission parameters, wherein the time gap indication includes a time duration during which the set of transmission parameters is constant. In some examples, each of the one or more sets of transmission parameters may be valid for a respective time gap. In some examples, the time gap indication may include a time difference for which the time phase drift value is valid.

[0148] At 525 , the receiving device 505 may bundle reference signals of a reference signal type transmitted by the UE 115 - b based on the indication of the one or more sets of transmission parameters.

[0149] At 530 , UE 115 - b may communicate with receiving device 505 based on one or more sets of transmission parameters.

[0150] At 535, receiving device 505 may receive a first reference signal of the reference signal type from UE 115-b. In some examples, receiving device 505 may receive the first reference signal at a first time (t1).

[0151] At 540, receiving device 505 may receive a second reference signal of the reference signal type from UE 115-b. In some examples, receiving device 505 may receive the second reference signal at a second time (t2).

[0152] At 545, the receiving device 505 may combine the first reference signal and the second reference signal based on one or more sets of transmission parameters for bundling the reference signals. In some examples, the receiving device 505 may determine that a difference between the second time and the first time is greater than a duration indicated by the time gap indication, wherein the first reference signal and the second reference signal are not bundled based on the difference between the second time and the first time being greater than the duration and the set of transmission parameters being not constant for the difference between the second time and the first time.

[0153] Figure 6 A block diagram 600 of a device 605 supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The device 605 may be an example of aspects of a UE 115 as described herein. The device 605 may include a receiver 610, a UE communication manager 615, and a transmitter 620. The device 605 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0154] The receiver 610 may receive information associated with various information channels (e.g., control channels, data channels, and information related to reference signal phase time drift model reporting for reference signal time domain coherence in NR, etc.), such as packets, user data, or control information. The information may be delivered to other components of the device 605. The receiver 610 may be a reference Fig. 9 Examples of aspects of the transceiver 920 are described. The receiver 610 may utilize a single antenna or a set of antennas.

[0155] The UE communication manager 615 may determine one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets being used to enable a receiving device to bundle reference signals of the reference signal type. The UE communication manager 615 may send an indication of one or more transmission parameter sets to the receiving device, the indication being associated with how characteristics of one or more ports of the UE vary across time. In some examples, the UE communication manager 615 may communicate with the receiving device based on the one or more transmission parameter sets. The UE communication manager 615 may be an example of aspects of the UE communication manager 910 described herein.

[0156] In some examples, the UE communication manager 615 as described herein can be implemented to achieve one or more potential advantages for the UE 115. For example, based on sending an indication of one or more transmission parameter sets, the UE communication manager 615 can enable the UE 115 to indicate how the phase of one or more ports of the UE varies across time, thereby further enabling a receiving device (e.g., a base station 105, an additional UE 115, etc.) to bundle reference signals based on how the phase of one or more portions varies across time. In this way, the UE communication manager 615 can reduce latency in communications with a receiving device based on preempting retransmissions and providing information that enables the receiving device to successfully receive the reference signal.

[0157] The UE communication manager 615 or its subcomponents may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the UE communication manager 615 or its subcomponents may be performed by a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designated to perform the functions described in the present disclosure.

[0158] The UE communication manager 615 or its subcomponents may be physically located at various locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, according to various aspects of the present disclosure, the UE communication manager 615 or its subcomponents may be separate and distinct components. In some examples, the UE communication manager 615 or its subcomponents may be combined with one or more other hardware components, including but not limited to input / output (I / O) components, transceivers, network servers, another computing device, one or more other components described in the present disclosure, or any combination thereof according to various aspects of the present disclosure.

[0159] Transmitter 620 can transmit signals generated by other components of device 605. In some examples, transmitter 620 can be co-located with receiver 610 in a transceiver module. For example, transmitter 620 can be a reference Fig. 9 Examples of aspects of the transceiver 920 are described. The transmitter 620 may utilize a single antenna or a set of antennas.

[0160] Figure 7 A block diagram 700 of a device 705 supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The device 705 may be an example of aspects of the device 605 or UE 115 as described herein. The device 705 may include a receiver 710, a UE communication manager 715, and a transmitter 735. The device 705 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0161] The receiver 710 may receive information associated with various information channels (e.g., control channels, data channels, and information related to reference signal phase time drift model reporting for reference signal time domain coherence in NR, etc.), such as packets, user data, or control information. The information may be delivered to other components of the device 705. The receiver 710 may be a reference Fig. 9 Examples of aspects of the transceiver 920 are described. The receiver 710 may utilize a single antenna or a set of antennas.

[0162] UE communications manager 715 may be an example of aspects of UE communications manager 615 as described herein. UE communications manager 715 may include parameter determining component 720, parameter indicator 725, and parameter communicating component 730. UE communications manager 715 may be an example of aspects of UE communications manager 910 as described herein.

[0163] Parameter determining component 720 can determine one or more sets of transmission parameters associated with a reference signal type for enabling a receiving device to bundle reference signals of the reference signal type.

[0164] Parameter indicator 725 may send an indication of one or more sets of transmission parameters to a receiving device, the indication being associated with how characteristics of one or more ports of the UE vary across time.

[0165] Parameter communicating component 730 can communicate with a receiving device based on one or more sets of transmission parameters.

[0166] Based on the technique for determining one or more transmission parameter sets associated with the reference signal type, the processor of the UE 115 (e.g., controlling the receiver 710, the transmitter 735, or the reference signal generator) Fig. 9 The transceiver 920 described herein can provide more efficient communication with a receiving device. For example, one or more transmission parameter sets can enable a receiving device to bundle reference signals of the reference signal type, thereby enhancing reference signal capacity and / or coverage for processing reference signals of the reference signal type.

[0167] Transmitter 735 can transmit signals generated by other components of device 705. In some examples, transmitter 735 can be co-located with receiver 710 in a transceiver module. For example, transmitter 735 can be a reference Fig. 9 Examples of aspects of the transceiver 920 are described. The transmitter 735 may utilize a single antenna or a set of antennas.

[0168] Figure 8 A block diagram 800 of a UE communication manager 805 supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The UE communication manager 805 may be an example of aspects of the UE communication manager 615, the UE communication manager 715, or the UE communication manager 910 described herein. The UE communication manager 805 may include a parameter determination component 810, a parameter indicator 815, a parameter communication component 820, a duration indicator 825, a transmission characteristic component 830, and a baseline parameter indicator 835. Each of these modules may communicate directly or indirectly with each other (e.g., via one or more buses).

[0169] The parameter determination component 810 can determine one or more transmission parameter sets associated with a reference signal type, and the one or more transmission parameter sets are used to enable a receiving device to bundle reference signals of the reference signal type. In some examples, the reference signal type may include SRS, DMRS, uplink reference signal, sidelink reference signal, or any combination thereof. In some examples, a set in one or more transmission parameter sets may include a time phase drift rate, one or more time difference thresholds, an amplitude difference threshold, a phase difference threshold, or any combination thereof. Additionally or alternatively, one or more transmission parameter sets may include a time domain model for implementing bundling of reference signals at a receiving device.

[0170] The parameter indicator 815 may send an indication of one or more transmission parameter sets to a receiving device, the indication being associated with how a characteristic of one or more ports of the UE varies across time. In some examples, the characteristic of how one or more ports of the UE vary across time may include the phase of one or more ports, the amplitude of one or more ports, or both. In some examples, the parameter indicator 815 may send an indication of one or more transmission parameter sets per port of the UE. In addition, in some examples, the parameter indicator 815 may send a variance (e.g., an error rate) associated with uncertainty of one or more transmission parameter sets.

[0171] In some examples, the parameter indicator 815 may send an indication of one or more transmission parameter sets via RRC signaling, a UE capability message, a MAC-CE, or any combination thereof. In addition, the parameter indicator 815 may send an indication of one or more transmission parameter sets based on the following: one or more transmission parameter sets are valid between the transmission of two reference signals of the reference signal type, one or more transmission parameter sets are valid based on the number of ports used to transmit the two reference signals not changing, the DRX active time remains active for the UE, whether a measurement gap occurs between the transmission of the two reference signals, maintaining an active BWP, maintaining a dual connectivity configuration, maintaining a carrier aggregation configuration, the transmission power of the two reference signals meets a power threshold, or any combination thereof.

[0172] Parameter communication component 820 can communicate with a receiving device based on one or more transmission parameter sets. In some examples, the receiving device can include a base station, a second UE, an additional wireless device, or any combination thereof.

[0173] Duration indicator 825 may send a time gap indication for each of the one or more transmission parameter sets, the time gap indication including a duration during which the transmission parameter set is constant. In some examples, each of the one or more transmission parameter sets may be valid for a respective time gap. In addition, the time gap indication may include a time difference for which the time phase drift value is valid.

[0174] The transmission characteristic component 830 can determine each transmission parameter set in the one or more transmission parameter sets based on the transmission characteristics applicable to each transmission parameter set. For example, the transmission characteristics can include a reference signal resource for sending a reference signal, a reference signal resource set identifier for sending a reference signal, a number of ports for sending a reference signal, a purpose for using a reference signal, a frequency band for sending a reference signal, a frequency band combination for sending a reference signal, a CC for sending a reference signal, a BWP for sending a reference signal, a reference signal type, or any combination thereof.

[0175] The baseline parameter indicator 835 may send a baseline transmission parameter set, wherein each of the one or more transmission parameter sets includes a set of differential values ​​based on a corresponding transmission parameter set of the baseline transmission parameter set, and wherein communicating with a receiving device is based on sending the baseline transmission parameter set.

[0176] Fig. 9 A diagram of a system 900 including a device 905 supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The device 905 may be an example of or include components of a device 605, a device 705, or a UE 115 as described herein. The device 905 may include components for two-way voice and data communications, including components for sending and receiving communications, including a UE communication manager 910, an I / O controller 915, a transceiver 920, an antenna 925, a memory 930, and a processor 940. These components may be in electronic communication via one or more buses (e.g., bus 945).

[0177] The UE communication manager 910 may determine one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets being used to enable a receiving device to bundle reference signals of the reference signal type. The UE communication manager 910 may send an indication of one or more transmission parameter sets to the receiving device, the indication being associated with how a characteristic of one or more ports of the UE varies across time. In some examples, the UE communication manager 910 may communicate with the receiving device based on the one or more transmission parameter sets.

[0178] I / O controller 915 can manage input and output signals for device 905. I / O controller 915 can also manage peripheral devices that are not integrated into device 905. In some examples, I / O controller 915 can represent a physical connection or port to an external peripheral device. In some examples, I / O controller 915 can utilize a computer such as a An operating system or another known operating system. In other cases, I / O controller 915 can represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some examples, I / O controller 915 can be implemented as part of a processor. In some examples, a user can interact with device 905 via I / O controller 915 or via hardware components controlled by I / O controller 915.

[0179] The transceiver 920 can communicate bidirectionally via one or more antennas, wired or wireless links as described above. For example, the transceiver 920 can represent a wireless transceiver and can communicate bidirectionally with another wireless transceiver. The transceiver 920 can also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0180] In some examples, a wireless device may include a single antenna 925. However, in some examples, a device may have more than one antenna 925, which may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0181] The memory 930 may include random access memory (RAM) and read-only memory (ROM). The memory 930 may store computer-readable, computer-executable code 935 including instructions that, when executed, cause the processor to perform various functions described herein. In some examples, the memory 930 may contain, among other things, a basic I / O system (BIOS) that may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0182] The processor 940 may include an intelligent hardware device (e.g., a general purpose processor, a DSP, a central processing unit (CPU), a microcontroller, an ASIC, an FPGA, a programmable logic device, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some examples, the processor 940 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into the processor 940. The processor 940 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 930) to cause the device 905 to perform various functions (e.g., functions or tasks to support reporting of a reference signal phase time drift model for reference signal time domain coherence in NR).

[0183] The code 935 may include instructions for implementing aspects of the present disclosure, including instructions for supporting wireless communications. The code 935 may be stored in a non-transitory computer-readable medium such as a system memory or other type of memory. In some examples, the code 935 may not be directly executable by the processor 940, but may (e.g., when compiled and executed) cause a computer to perform the functions described herein.

[0184] Fig.10 A block diagram 1000 of a device 1005 supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The device 1005 may be an example of aspects of a UE 115 or a base station 105 as described herein. The device 1005 may include a receiver 1010, a communication manager 1015, and a transmitter 1020. The device 1005 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0185] The receiver 1010 may receive information associated with various information channels (e.g., control channels, data channels, and information related to reference signal phase time drift model reports for reference signal time domain coherence in NR, etc.), such as packets, user data, or control information. The information may be delivered to other components of the device 1005. The receiver 1010 may be a reference Fig.13 and Fig.14 Examples of aspects of transceiver 1320 or 1420 are described. Receiver 1010 may utilize a single antenna or a set of antennas.

[0186] The communication manager 1015 may receive from the UE an indication of one or more transmission parameter sets for a reference signal type, the indication being associated with how a characteristic of one or more ports of the UE varies across time. In some examples, the communication manager 1015 may bundle reference signals of the reference signal type sent by the UE based on the indication of the one or more transmission parameter sets. The communication manager 1015 may communicate with the UE based on the one or more transmission parameter sets and the reference signals of the reference signal type bundled. The communication manager 1015 may be an example of aspects of the communication manager 1310 or 1410 as described herein.

[0187] The communication manager 1015 or its subcomponents may be implemented in hardware, code executed by a processor (e.g., software or firmware), or any combination thereof. If implemented in code executed by a processor, the functions of the communication manager 1015 or its subcomponents may be performed by a general purpose processor, a DSP, an ASIC, an 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.

[0188] The communication manager 1015 or its subcomponents may be physically located in various locations, including being distributed so that portions of the functionality are implemented by one or more physical components at different physical locations. In some examples, the communication manager 1015 or its subcomponents may be separate and distinct components in accordance with various aspects of the present disclosure. In some examples, the communication manager 1015 or its subcomponents may be combined with one or more other hardware components, including but not limited to an I / O component, a transceiver, a network server, another computing device, one or more other components described in the present disclosure, or any combination thereof in accordance with various aspects of the present disclosure.

[0189] Transmitter 1020 can transmit signals generated by other components of device 1005. In some examples, transmitter 1020 can be co-located with receiver 1010 in a transceiver module. For example, transmitter 1020 can be a reference Fig.13 and Fig.14 Examples of aspects of the described transceiver 1320 or 1420. The transmitter 1020 may utilize a single antenna or a set of antennas.

[0190] Fig.11A block diagram 1100 of a device 1105 supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The device 1105 may be an example of aspects of the device 1005, UE 115, or base station 105 as described herein. The device 1105 may include a receiver 1110, a communication manager 1115, and a transmitter 1135. The device 1105 may also include a processor. Each of these components may communicate with each other (e.g., via one or more buses).

[0191] The receiver 1110 may receive information associated with various information channels (e.g., control channels, data channels, and information related to reference signal phase time drift model reports for reference signal time domain coherence in NR, etc.), such as packets, user data, or control information. The information may be delivered to other components of the device 1105. The receiver 1110 may be a reference Fig.13 and Fig.14 Examples of aspects of transceiver 1320 or 1420 are described. Receiver 1110 may utilize a single antenna or a set of antennas.

[0192] The communication manager 1115 can be an example of aspects of the communication manager 1015 as described herein. The communication manager 1115 can include a parameter receiving component 1120, a bundling component 1125, and a bundling communication component 1130. The communication manager 1115 can be an example of aspects of the communication manager 1310 or 1410 as described herein.

[0193] Parameter receiving component 1120 can receive, from a UE, an indication of one or more sets of transmission parameters for a reference signal type, the indication associated with how characteristics of one or more ports of the UE vary across time.

[0194] The bundling component 1125 can bundle reference signals of the reference signal type sent by the UE based on the indication of one or more sets of transmission parameters.

[0195] The bundled communication component 1130 can communicate with the UE based on one or more transmission parameter sets and the reference signal bundled with the reference signal type.

[0196] Transmitter 1135 can transmit signals generated by other components of device 1105. In some examples, transmitter 1135 can be co-located with receiver 1110 in a transceiver module. For example, transmitter 1135 can be a reference Fig.13 and Fig.14 Examples of aspects of the described transceiver 1320 or 1420. The transmitter 1135 may utilize a single antenna or a set of antennas.

[0197] Fig.12A block diagram 1200 of a communication manager 1205 supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The communication manager 1205 can be an example of aspects of the communication manager 1015, the communication manager 1115, or the communication manager 1310 described herein. The communication manager 1205 may include a parameter receiving component 1210, a bundling component 1215, a bundling communication component 1220, a duration bundling component 1225, a transmission characteristic component 1230, and a baseline parameter component 1235. Each of these modules can communicate directly or indirectly with each other (e.g., via one or more buses). In some examples, the communication manager 1205 can be used by a receiving device that includes a base station, a second UE, an additional wireless device, or any combination thereof.

[0198] The parameter receiving component 1210 may receive an indication of one or more transmission parameter sets for a reference signal type from the UE, the indication being associated with how a characteristic of one or more ports of the UE varies across time. For example, the characteristic of how one or more ports of the UE vary across time may include the phase of one or more ports, the amplitude of one or more ports, or both. In some examples, a set in one or more transmission parameter sets may include a time phase drift rate, one or more time difference thresholds, an amplitude difference threshold, a phase difference threshold, or any combination thereof. In addition, one or more transmission parameter sets may include a time domain model for implementing bundling of reference signals at a receiving device. In some examples, the reference signal type may include an SRS, a DMRS, an uplink reference signal, a sidelink reference signal, or any combination thereof.

[0199] In some examples, parameter receiving component 1210 can receive an indication of one or more transmission parameter sets per port of the UE. Additionally, parameter receiving component 1210 can receive a variance (eg, an error rate) associated with uncertainty of one or more transmission parameter sets.

[0200] In some examples, the parameter receiving component 1210 can receive an indication of one or more transmission parameter sets via RRC signaling, a UE capability message, a MAC-CE, or any combination thereof. In addition, the parameter receiving component 1210 can receive an indication of one or more transmission parameter sets based on the following: one or more transmission parameter sets are valid between the transmission of two reference signals of the reference signal type, one or more transmission parameter sets are valid based on the number of ports used to send two reference signals not changing, the DRX active time remains active for the UE, whether a measurement gap occurs between the transmission of two reference signals, maintaining an active BWP, maintaining a dual connectivity configuration, maintaining a carrier aggregation configuration, the transmission power of two reference signals meets a power threshold, or any combination thereof.

[0201] The bundling component 1215 may bundle reference signals of the reference signal type sent by the UE based on an indication of one or more transmission parameter sets. In some examples, the bundling component 1215 may receive a first reference signal of the reference signal type from the UE; and may receive a second reference signal of the reference signal type from the UE, wherein bundling the reference signals of the reference signal type includes: combining the first reference signal and the second reference signal based on one or more transmission parameter sets.

[0202] The bundled communication component 1220 can communicate with the UE based on one or more transmission parameter sets and the reference signal bundled with the reference signal type.

[0203] Duration bundling component 1225 can receive a time gap indication for each of one or more transmission parameter sets, the time gap indication comprising a duration during which the transmission parameter set is constant. In some examples, each of the one or more transmission parameter sets can be valid for a respective time gap. In addition, the time gap indication can include a time difference for which the time phase drift value is valid.

[0204] In some examples, duration bundling component 1225 can receive a first reference signal of the reference signal type from the UE at a first time, and can receive a second reference signal of the reference signal type from the UE at a second time. Subsequently, in some examples, duration bundling component 1225 can determine that a difference between the second time and the first time is greater than a duration indicated by the time gap indication, wherein the first reference signal and the second reference signal are not bundled based on the difference between the second time and the first time being greater than the duration and the set of transmission parameters being not constant for the difference between the second time and the first time.

[0205] The transmission characteristic component 1230 can determine that each of the one or more transmission parameter sets is applicable to a respective transmission characteristic. In some examples, the transmission characteristic can include a reference signal resource for sending a reference signal, a reference signal resource set identifier for sending a reference signal, a number of ports for sending a reference signal, a purpose for using a reference signal, a frequency band for sending a reference signal, a frequency band combination for sending a reference signal, a CC for sending a reference signal, a BWP for sending a reference signal, a reference signal type, or any combination thereof.

[0206] The baseline parameter component 1235 can receive a baseline transmission parameter set, wherein each transmission parameter set of one or more transmission parameter sets includes a differential value set based on a corresponding transmission parameter set of the baseline transmission parameter set, and wherein communicating with the UE is based on receiving the baseline transmission parameter set.

[0207] Fig.13 A diagram of a system 1300 including a device 1305 supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The device 1305 may be an example of a component of a device 1005, a device 1105, or a UE 115 as described herein or include a component of a device 605, a device 705, or a UE 115 as described herein. The device 1305 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 1310, a transceiver 1320, an antenna 1325, a memory 1330, a processor 1340, and an I / O controller 1315. These components may be in electronic communication via one or more buses (e.g., bus 1345).

[0208] The communication manager 1310 may receive from the UE an indication of one or more transmission parameter sets for a reference signal type, the indication being associated with how characteristics of one or more ports of the UE vary across time. In some examples, the communication manager 1310 may bundle reference signals of the reference signal type sent by the UE based on the indication of the one or more transmission parameter sets. The communication manager 1310 may communicate with the UE based on the one or more transmission parameter sets and the reference signals of the reference signal type bundled.

[0209] The transceiver 1320 may communicate bidirectionally via one or more antennas, wired or wireless links as described above. For example, the transceiver 1320 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1320 may also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0210] In some examples, a wireless device may include a single antenna 1325. However, in some examples, a device may have more than one antenna 1325, which may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0211] Memory 1330 may include RAM, ROM, or any combination thereof. Memory 1330 may store computer readable code 1335 including instructions that, when executed by a processor (e.g., processor 1340), cause the device to perform various functions described herein. In some examples, memory 1330 may include BIOS, etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0212] Processor 1340 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, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some examples, processor 1340 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into processor 1340. Processor 1340 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1330) to cause device 1305 to perform various functions (e.g., functions or tasks to support reporting of a reference signal phase time drift model for reference signal time domain coherence in NR).

[0213] I / O controller 1315 can manage input and output signals for device 1305. I / O controller 1315 can also manage peripheral devices that are not integrated into device 1305. In some examples, I / O controller 1315 can represent a physical connection or port to an external peripheral device. In some examples, I / O controller 1315 can utilize a computer such as a 1305. In some examples, the I / O controller 1315 may represent or interact with a modem, keyboard, mouse, touch screen, or similar device. In some examples, the I / O controller 1315 may be implemented as part of a processor. In some examples, a user may interact with the device 1305 via the I / O controller 1315 or via hardware components controlled by the I / O controller 1315.

[0214] The code 1335 may include instructions for implementing aspects of the present disclosure, including instructions for supporting wireless communications. The code 1335 may be stored in a non-transitory computer-readable medium such as a system memory or other type of memory. In some examples, the code 1335 may not be directly executable by the processor 1340, but may (e.g., when compiled and executed) cause a computer to perform the functions described herein.

[0215] Fig.14 A diagram of a system 1400 including a device 1405 supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The device 1405 may be an example of or include components of a device 1005, device 1105, or base station 105 as described herein. The device 1405 may include components for two-way voice and data communications, including components for sending and receiving communications, including a communication manager 1410, a network communication manager 1450, a transceiver 1420, an antenna 1425, a memory 1430, a processor 1440, and an inter-station communication manager 1455. These components may be in electronic communication via one or more buses (e.g., bus 1445).

[0216] The communication manager 1410 may receive from the UE an indication of one or more transmission parameter sets for a reference signal type, the indication being associated with how characteristics of one or more ports of the UE vary across time. In some examples, the communication manager 1410 may bundle reference signals of the reference signal type sent by the UE based on the indication of the one or more transmission parameter sets. The communication manager 1410 may communicate with the UE based on the one or more transmission parameter sets and the reference signals of the reference signal type bundled.

[0217] The network communications manager 1450 may manage communications with the core network (eg, via one or more wired backhaul links). For example, the network communications manager 1450 may manage the delivery of data communications for client devices, such as one or more UEs 115.

[0218] The transceiver 1420 may communicate bidirectionally via one or more antennas, wired or wireless links as described above. For example, the transceiver 1420 may represent a wireless transceiver and may communicate bidirectionally with another wireless transceiver. The transceiver 1420 may also include a modem to modulate packets and provide the modulated packets to an antenna for transmission, and demodulate packets received from an antenna.

[0219] In some examples, a wireless device may include a single antenna 1425. However, in some examples, a device may have more than one antenna 1425, which may be capable of sending or receiving multiple wireless transmissions simultaneously.

[0220] Memory 1430 may include RAM, ROM, or any combination thereof. Memory 1430 may store computer readable code 1435 including instructions that, when executed by a processor (e.g., processor 1440), cause the device to perform various functions described herein. In some examples, memory 1430 may include BIOS, etc., which may control basic hardware or software operations, such as interaction with peripheral components or devices.

[0221] Processor 1440 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). In some examples, processor 1440 may be configured to operate a memory array using a memory controller. In other cases, the memory controller may be integrated into processor 1440. Processor 1440 may be configured to execute computer-readable instructions stored in a memory (e.g., memory 1430) to cause device 1405 to perform various functions (e.g., functions or tasks to support reporting of a reference signal phase time drift model for reference signal time domain coherence in NR).

[0222] The inter-site communication manager 1455 may manage communications with other base stations 105 and may include a controller or scheduler for coordinating with other base stations 105 to control communications with UE 115. For example, the inter-site communication manager 1455 may coordinate scheduling of transmissions to UE 115 to implement various interference mitigation techniques such as beamforming or joint transmission. In some examples, the inter-site communication manager 1455 may provide an X2 interface within an LTE / LTE-A wireless communication network technology to provide communications between base stations 105.

[0223] The code 1435 may include instructions for implementing aspects of the present disclosure, including instructions for supporting wireless communications. The code 1435 may be stored in a non-transitory computer-readable medium such as a system memory or other type of memory. In some examples, the code 1435 may not be directly executable by the processor 1440, but may (e.g., when compiled and executed) cause a computer to perform the functions described herein.

[0224] Fig.15A flow chart illustrating a method 1500 for supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The operations of the method 1500 may be implemented by a UE 115 or a component thereof as described herein. For example, the reference signal may be Figures 6 to 9 The described UE communication manager performs the operations of method 1500. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described below.

[0225] At 1505, the UE may determine one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets being used to enable a receiving device to bundle reference signals of the reference signal type. The operations of 1505 may be performed according to the methods described herein. In some examples, the reference signal type may be associated with a reference signal type. Figures 6 to 9 The described parameters determine aspects of the operation of component execution 1505.

[0226] At 1510, the UE may send an indication of one or more transmission parameter sets to a receiving device, the indication being associated with how characteristics of one or more ports of the UE vary over time. The operations of 1510 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The parameter indicators described perform aspects of the operations of 1510.

[0227] At 1515, the UE may communicate with a receiving device based on one or more transmission parameter sets. The operations of 1515 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 Aspects of the operations performed by parameter communication component 1515 are described.

[0228] Fig.16 A flow chart illustrating a method 1600 for supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The operations of the method 1600 may be implemented by a UE 115 or a component thereof as described herein. For example, the reference signal may be Figures 6 to 9 The described UE communication manager performs the operations of method 1600. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described below.

[0229] At 1605, the UE may determine one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets being used to enable a receiving device to bundle reference signals of the reference signal type. The operations of 1605 may be performed according to the methods described herein. In some examples, the reference signal type may be associated with a reference signal type. Figures 6 to 9 The described parameters determine aspects of the operations performed by the component 1605.

[0230] At 1610, the UE may send an indication of one or more transmission parameter sets to a receiving device, the indication being associated with how characteristics of one or more ports of the UE vary over time. The operations of 1610 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The parameter indicators described perform aspects of the operations of 1610.

[0231] At 1615, the UE may send a time gap indication for each of the one or more transmission parameter sets, the time gap indication including a duration during which the transmission parameter set is constant. The operations of 1615 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 Aspects of the operations of duration indicator execution 1615 are described.

[0232] At 1620, the UE may communicate with a receiving device based on one or more transmission parameter sets. The operations of 1620 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 Aspects of the operations of parameter communication component 1620 are described.

[0233] Fig.17 A flow chart illustrating a method 1700 for supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The operations of the method 1700 may be implemented by a UE 115 or a component thereof as described herein. For example, the reference signal may be Figures 6 to 9 The described UE communication manager performs the operations of method 1700. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described below.

[0234] At 1705, the UE may determine one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets being used to enable a receiving device to bundle reference signals of the reference signal type. The operations of 1705 may be performed according to the methods described herein. In some examples, the reference signal type may be associated with a reference signal type. Figures 6 to 9 The described parameters determine aspects of the operation of component execution 1705.

[0235] At 1710, the UE may send an indication of one or more transmission parameter sets to a receiving device, the indication being associated with how characteristics of one or more ports of the UE vary over time. The operations of 1710 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The parameter indicators described perform aspects of the operations of 1710.

[0236] At 1715, the UE may send an indication of one or more transmission parameter sets according to the port of the UE. The operations of 1715 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The parameter indicators described perform aspects of the operations of 1715.

[0237] At 1720, the UE may communicate with a receiving device based on one or more transmission parameter sets. The operations of 1720 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 Aspects of the operations performed by the parameter communication component 1720 are described.

[0238] Fig.18 A flow chart illustrating a method 1800 for supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The operations of the method 1800 may be implemented by a UE 115 or a component thereof as described herein. For example, the reference signal may be Figures 6 to 9 The described UE communication manager performs the operations of method 1800. In some examples, the UE may execute an instruction set to control the functional elements of the UE to perform the functions described below. Additionally or alternatively, the UE may use dedicated hardware to perform aspects of the functions described below.

[0239] At 1805, the UE may determine one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets being used to enable a receiving device to bundle reference signals of the reference signal type. The operations of 1805 may be performed according to the methods described herein. In some examples, the reference signal type may be associated with a reference signal type. Figures 6 to 9 The parameters described determine aspects of the operations performed by component 1805.

[0240] At 1810, the UE may determine each transmission parameter set in one or more transmission parameter sets based on the transmission characteristics applicable to each transmission parameter set. The operations of 1810 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 Aspects of the operations of the transfer characteristic component 1810 are described.

[0241] At 1815, the UE may send an indication of one or more transmission parameter sets to a receiving device, the indication being associated with how characteristics of one or more ports of the UE vary over time. The operations of 1815 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 The parameter indicators described perform aspects of the operations of 1815.

[0242] At 1820, the UE may communicate with a receiving device based on one or more transmission parameter sets. The operations of 1820 may be performed according to the methods described herein. In some examples, the reference Figures 6 to 9 Aspects of the operations performed by the parameter communication component 1820 are described.

[0243] Fig.19 A flow chart illustrating a method 1900 for supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The operations of the method 1900 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. For example, the reference signal may be Figures 10 to 14 The communication manager described in the method 1900 performs the operations of method 1900. In some examples, the UE or base station can execute an instruction set to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, the UE or base station can use dedicated hardware to perform aspects of the functions described below.

[0244] At 1905, the UE or base station may receive from the UE an indication of one or more transmission parameter sets for a reference signal type, the indication being associated with how characteristics of one or more ports of the UE vary over time. The operations of 1905 may be performed according to the methods described herein. In some examples, the reference signal may be received by the UE. Figures 10 to 14 Aspects of the operations performed by the parameter receiving component 1905 are described.

[0245] At 1910, the UE or base station may bundle reference signals of the reference signal type sent by the UE based on an indication of one or more transmission parameter sets. The operations of 1910 may be performed according to the methods described herein. In some examples, the reference signal type may be transmitted by the UE. Figures 10 to 14 Aspects of the operations of the bundling component execution 1910 are described.

[0246] At 1915, the UE or the base station may communicate with the UE based on one or more transmission parameter sets and the reference signal bundled with the reference signal type. The operation of 1915 may be performed according to the method described herein. In some examples, the reference signal may be transmitted by the base station. Figures 10 to 14 Aspects of the operations of the bundled communications component execution 1915 are described.

[0247] Fig. 20 A flow chart illustrating a method 2000 for supporting reference signal phase time drift model reporting for reference signal time domain coherence in NR according to aspects of the present disclosure is shown. The operations of the method 2000 may be implemented by a UE 115 or a base station 105 or components thereof as described herein. For example, the reference signal may be Figures 10 to 14 The communication manager described in the method 2000 performs the operations of the method 2000. In some examples, the UE or base station may execute an instruction set to control the functional elements of the UE or base station to perform the functions described below. Additionally or alternatively, the UE or base station may use dedicated hardware to perform aspects of the functions described below.

[0248] At 2005, the UE or base station may receive from the UE an indication of one or more transmission parameter sets for a reference signal type, the indication being associated with how characteristics of one or more ports of the UE vary over time. The operations of 2005 may be performed according to the methods described herein. In some examples, the reference signal may be received by the UE. Figures 10 to 14 Aspects of the operations performed by the parameter receiving component 2005 are described.

[0249] At 2010, the UE or base station may bundle reference signals of the reference signal type sent by the UE based on an indication of one or more transmission parameter sets. The operations of 2010 may be performed according to the methods described herein. In some examples, the reference signal type may be transmitted by the UE. Figures 10 to 14 Describes aspects of the operation of the bundled component execution 2010.

[0250] At 2015, the UE or the base station may communicate with the UE based on one or more transmission parameter sets and the reference signal bundled with the reference signal type. The operation of 2015 may be performed according to the method described herein. In some examples, the reference signal may be Figures 10 to 14 Describes aspects of the operation of the bundled communication component execution 2015.

[0251] At 2020, the UE or the base station may receive a first reference signal of the reference signal type from the UE. The operations of 2020 may be performed according to the methods described herein. In some examples, the reference signal type may be Figures 10 to 14 Describes aspects of the operation of the bundled components performing 2020.

[0252] At 2025, the UE or the base station may receive a second reference signal of the reference signal type from the UE, wherein bundling the reference signals of the reference signal type includes combining the first reference signal and the second reference signal based on one or more transmission parameter sets. The operations of 2025 may be performed according to the methods described herein. In some examples, the reference signal may be transmitted by the base station. Figures 10 to 14 Describe aspects of the operations of the bundled component execution 2025.

[0253] A summary of aspects of the disclosure is provided below.

[0254] Aspect 1: A method for wireless communication at a UE, comprising: determining one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets being used to enable a receiving device to bundle reference signals of the reference signal type; sending an indication of the one or more transmission parameter sets to the receiving device, the indication being associated with how characteristics of one or more ports of the UE vary across time; and communicating with the receiving device based at least in part on the one or more transmission parameter sets.

[0255] Aspect 2: A method according to aspect 1, wherein sending an indication of one or more transmission parameter sets includes: sending a time gap indication for each of the one or more transmission parameter sets, the time gap indication including a time duration in which the transmission parameter set is constant.

[0256] Aspect 3: The method according to aspect 2, wherein each of the one or more transmission parameter sets is valid for a respective time slot.

[0257] Aspect 4: The method according to any one of aspects 2 to 3, wherein the time gap indication comprises a time difference for which the time phase drift value is valid.

[0258] Aspect 5: According to the method according to any one of Aspects 1 to 4, sending an indication of one or more transmission parameter sets includes: sending an indication of one or more transmission parameter sets according to a port of the UE.

[0259] Aspect 6: The method according to any one of aspects 1 to 5, wherein sending an indication of one or more sets of transmission parameters comprises: sending a variance associated with uncertainty of the one or more sets of transmission parameters.

[0260] Aspect 7: The method according to any one of Aspects 1 to 6, wherein determining one or more transmission parameter sets comprises: determining each transmission parameter set in the one or more transmission parameter sets based at least in part on a transmission characteristic applicable to each transmission parameter set.

[0261] Aspect 8: The method according to Aspect 7, wherein the transmission characteristics include: a reference signal resource used to send a reference signal, a reference signal resource set identifier used to send a reference signal, a number of ports used to send a reference signal, a purpose of use of the reference signal, a frequency band used to send a reference signal, a frequency band combination used to send a reference signal, a component carrier used to send a reference signal, a bandwidth part used to send a reference signal, a reference signal type, or any combination thereof.

[0262] Aspect 9: The method according to any one of Aspects 1 to 8 further includes: sending a baseline transmission parameter set, wherein each of the one or more transmission parameter sets includes a differential value set of a corresponding transmission parameter set based at least in part on the baseline transmission parameter set, and wherein communicating with a receiving device is at least in part based on sending the baseline transmission parameter set.

[0263] Aspect 10: A method according to any one of Aspects 1 to 9, wherein sending an indication of one or more transmission parameter sets includes sending an indication of one or more transmission parameter sets via: radio resource control signaling, UE capability message, medium access control (MAC) control element, or any combination thereof.

[0264] Aspect 11: A method according to any one of Aspects 1 to 10, wherein sending an indication of one or more transmission parameter sets is based at least in part on the following: one or more transmission parameter sets are valid between the transmission of two reference signals of the reference signal type, one or more transmission parameter sets are valid at least in part based on the number of ports used to send two reference signals not changing, the discontinuous reception activity time remains active for the UE, whether a measurement gap occurs between the transmission of two reference signals, maintaining an active bandwidth portion, maintaining a dual connection configuration, maintaining a carrier aggregation configuration, the transmission power of the two reference signals meets a power threshold, or any combination thereof.

[0265] Aspect 12: The method according to any one of Aspects 1 to 11, wherein the set in the one or more transmission parameter sets includes a time phase drift rate, one or more time difference thresholds, an amplitude difference threshold, a phase difference threshold, or any combination thereof.

[0266] Aspect 13: The method according to any one of aspects 1 to 12, wherein a set in the one or more sets of transmission parameters includes a time domain model for implementing bundling of reference signals at a receiving device.

[0267] Aspect 14: The method according to any one of Aspects 1 to 13, wherein the reference signal type includes a sounding reference signal, a demodulation reference signal, an uplink reference signal, a sidelink reference signal, or any combination thereof.

[0268] Aspect 15: The method according to any one of aspects 1 to 14, wherein the characteristic of how one or more ports of the UE vary across time comprises a phase of the one or more ports, an amplitude of the one or more ports, or both.

[0269] Aspect 16: The method according to any one of aspects 1 to 15, wherein the receiving device comprises a base station, a second UE, an additional wireless device, or any combination thereof.

[0270] Aspect 17: A method for wireless communication at a receiving device, comprising: receiving an indication of one or more transmission parameter sets for a reference signal type from a UE, the indication being associated with how characteristics of one or more ports of the UE vary across time; bundling reference signals of the reference signal type sent by the UE based at least in part on the indication of the one or more transmission parameter sets; and communicating with the UE based at least in part on the one or more transmission parameter sets and the reference signals bundled with the reference signal type.

[0271] Aspect 18: The method according to Aspect 17 also includes: receiving a first reference signal of the reference signal type from the UE; and receiving a second reference signal of the reference signal type from the UE, wherein bundling the reference signals of the reference signal type includes: combining the first reference signal and the second reference signal based at least in part on one or more transmission parameter sets.

[0272] Aspect 19: A method according to any one of Aspects 17 to 18, wherein receiving an indication of one or more transmission parameter sets includes: receiving a time gap indication for each set in the one or more transmission parameter sets, the time gap indication including a duration during which the transmission parameter set is constant.

[0273] Aspect 20: The method according to Aspect 19 further includes: receiving a first reference signal of the reference signal type from the UE at a first time; receiving a second reference signal of the reference signal type from the UE at a second time; and determining that the difference between the second time and the first time is greater than the duration indicated by the time gap indication, wherein the first reference signal and the second reference signal are not bundled, at least in part based on the fact that the difference between the second time and the first time is greater than the duration and the transmission parameter set is not constant for the difference between the second time and the first time.

[0274] Aspect 21: The method according to any one of aspects 19 to 20, wherein each of the one or more sets of transmission parameters is valid for a respective time slot.

[0275] Aspect 22: The method according to any one of aspects 19 to 21, wherein the time gap indication comprises a time difference for which the time phase drift value is valid.

[0276] Aspect 23: According to the method according to any one of Aspects 17 to 22, receiving an indication of one or more transmission parameter sets includes: receiving an indication of one or more transmission parameter sets according to a port of the UE.

[0277] Aspect 24: The method according to any one of aspects 17 to 23, wherein receiving an indication of one or more sets of transmission parameters comprises: receiving a variance associated with uncertainty of the one or more sets of transmission parameters.

[0278] Aspect 25: The method according to any one of aspects 17 to 24, further comprising: determining that each transmission parameter set of the one or more transmission parameter sets is suitable for a respective transmission characteristic.

[0279] Aspect 26: A method according to Aspect 25, wherein the transmission characteristics include: a reference signal resource used to send a reference signal, a reference signal resource set identifier used to send a reference signal, a number of ports used to send a reference signal, a purpose of use of the reference signal, a frequency band used to send a reference signal, a frequency band combination used to send a reference signal, a component carrier used to send a reference signal, a bandwidth part used to send a reference signal, a reference signal type, or any combination thereof.

[0280] Aspect 27: The method according to any one of Aspects 17 to 26 further includes: receiving a baseline transmission parameter set, wherein each of the one or more transmission parameter sets includes a differential value set of a corresponding transmission parameter set based at least in part on the baseline transmission parameter set, and wherein communicating with the UE device is at least in part based on receiving the baseline transmission parameter set.

[0281] Aspect 28: A method according to any one of Aspects 17 to 27, wherein receiving an indication of one or more sets of transmission parameters includes receiving an indication of one or more sets of transmission parameters via: radio resource control signaling, UE capability message, medium access control (MAC) control element, or any combination thereof.

[0282] Aspect 29: A method according to any one of Aspects 17 to 28, wherein receiving an indication of one or more transmission parameter sets is based at least in part on the following: one or more transmission parameter sets are valid between the transmission of two reference signals of the reference signal type, one or more transmission parameter sets are valid at least in part based on the number of ports used to send two reference signals not changing, the discontinuous reception activity time remains active for the UE, whether a measurement gap occurs between the transmission of two reference signals, maintaining an active bandwidth portion, maintaining a dual connection configuration, maintaining a carrier aggregation configuration, the transmission power of the two reference signals meets a power threshold, or any combination thereof.

[0283] Aspect 30: A method according to any one of Aspects 17 to 29, wherein a set in one or more sets of transmission parameters includes a time phase drift rate, one or more time difference thresholds, an amplitude difference threshold, a phase difference threshold, or any combination thereof.

[0284] Aspect 31: The method according to any one of aspects 17 to 30, wherein a set in the one or more sets of transmission parameters includes a time domain model for implementing bundling of reference signals at a receiving device.

[0285] Aspect 32: A method according to any one of Aspects 17 to 31, wherein the reference signal type comprises a sounding reference signal, a demodulation reference signal, an uplink reference signal, a sidelink reference signal, or any combination thereof.

[0286] Aspect 33: The method according to any one of aspects 17 to 32, wherein the characteristic of how one or more ports of the UE vary across time includes the phase of the one or more ports, the amplitude of the one or more ports, or both.

[0287] Aspect 34: The method according to any one of aspects 17 to 33, wherein the receiving device includes a base station, a second UE, an additional wireless device, or any combination thereof.

[0288] Aspect 35: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 1 to 16.

[0289] Aspect 36: An apparatus for wireless communication at a UE, comprising at least one component for performing the method according to any one of aspects 1 to 16.

[0290] Aspect 37: A non-transitory computer-readable medium storing a code for wireless communication at a UE, the code comprising instructions executable by a processor to perform the method according to any one of aspects 1 to 16.

[0291] Aspect 38: An apparatus for wireless communication at a receiving device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform a method according to any one of Aspects 17 to 34.

[0292] Aspect 39: An apparatus for wireless communication at a receiving device, comprising at least one component for performing a method according to any one of aspects 17 to 34.

[0293] Aspect 40: 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 the method according to any one of aspects 17 to 34.

[0294] It should be noted that the methods described herein describe possible implementations, and that the operations and steps may be rearranged or otherwise modified, and other implementations are possible. Furthermore, aspects from two or more of the methods may be combined.

[0295] Although aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for example purposes, and LTE, LTE-A, LTE-A Pro, or NR terminology may be used in many descriptions, the techniques described herein may be applicable beyond LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques may be applicable to various other wireless communication 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, and other systems and radio technologies not explicitly mentioned herein.

[0296] The information and signals described herein may be represented using any of a variety of different techniques and technologies. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the specification may be represented by voltage, current, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.

[0297] The various illustrative blocks and components described in conjunction with the disclosure herein may be implemented or performed with a general purpose processor, a DSP, an ASIC, a CPU, an FPGA or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors combined with a DSP core, or any other such configuration).

[0298] 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 a computer-readable medium or sent via it as one or more instructions or codes. Other examples and implementations are within the scope of the present disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented in software executed by a processor, hardware, firmware, hardwiring, or any combination of these. Features that implement the functions may also be physically located in various locations, including being distributed so that parts of the functions are implemented at different physical locations.

[0299] Computer-readable medium includes both non-transitory computer storage medium and communication medium, and the communication medium includes any medium that is convenient to transmit computer program from one place to another place.Non-transitory storage medium can be any available medium that can be accessed by general-purpose computer or special-purpose computer.As an example and not limitation, non-transitory computer-readable medium can include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, CD (CD) ROM or other optical disk storage device, disk storage device or other magnetic storage device, or can be used for carrying or storing required program code parts and any other non-transitory medium that can be accessed by general-purpose computer or special-purpose computer or general processor or special-purpose processor in the form of instruction or data structure.In addition, any connection is appropriately referred to as computer-readable medium.For example, if coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL) or wireless technology such as infrared, radio and microwave are used to transmit software from website, server or other remote source, coaxial cable, fiber optic cable, twisted pair, DSL or wireless technology such as infrared, radio and microwave are included in the definition of computer-readable medium. Disk and disc, as used herein, includes 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.

[0300] As used herein, including in the claims, "or" used in a list of items (e.g., a list of items beginning with a phrase such as "at least one of" or "one or more of") indicates an inclusive list, so that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). In addition, as used herein, the phrase "based on" should not be interpreted as a reference to a closed set of conditions. For example, an example step described as "based on condition A" can be based on both condition A and condition B without departing from the scope of this disclosure. In other words, as used herein, the phrase "based on" should be interpreted in the same manner as the phrase "based at least in part on."

[0301] In the drawings, similar components or features may have the same reference number. In addition, various components of the same type may be distinguished by following the reference number with a dash and a second reference number that distinguishes the similar components. If only the first reference number is used in the specification, the description applies to any of the similar components having the same first reference number, regardless of the second reference number or other subsequent reference numbers.

[0302] The description set forth herein in conjunction with the accompanying drawings describes example configurations and does not represent all examples that may be implemented or within the scope of the claims. The term "example" as used herein means "used as an example, instance, or illustration," rather than "preferred" or "superior to other examples." In order to provide an understanding of the described techniques, this detailed description includes specific details. However, these techniques may be practiced without these specific details. In some instances, well-known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0303] The description herein is provided to enable one of ordinary skill in the art to make or use the present disclosure. Various modifications to the present disclosure will be apparent to one of ordinary skill in the art, and the general principles defined herein may be applied to other variations without departing from the scope of the present invention. Therefore, the present disclosure is not limited to the examples and designs described herein, but should conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for wireless communication at a user equipment UE, comprising: determining one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets being used to enable a receiving device to bundle reference signals of the reference signal type; sending an indication of the one or more sets of transmission parameters to the receiving device, the indication being associated with how a characteristic of one or more ports of the UE varies across time, wherein the characteristic comprises at least a phase of one or more of the reference signals sent from the one or more ports; as well as Communicating with the receiving device is performed based at least in part on the one or more sets of transmission parameters.

2. The method of claim 1 , wherein sending the indication of the one or more transmission parameter sets comprises: A time gap indication is sent for each of the one or more transmission parameter sets, the time gap indication comprising a time duration during which the transmission parameter set is constant. 3 . The method of claim 2 , wherein each of the one or more sets of transmission parameters is valid for a respective time slot. The method of claim 2 , wherein the time gap indication comprises a time difference for which a time phase drift value is valid.

5. The method of claim 1 , wherein sending the indication of the one or more transmission parameter sets comprises: The indication of the one or more transmission parameter sets is sent according to the port of the UE.

6. The method of claim 1 , wherein sending the indication of the one or more transmission parameter sets comprises: A variance associated with uncertainty of the one or more sets of transmission parameters is transmitted.

7. The method of claim 1 , wherein determining the one or more transmission parameter sets comprises: Each of the one or more sets of transmission parameters is determined based at least in part on a transmission characteristic for which each set of transmission parameters is applicable.

8. The method of claim 7, wherein the transmission characteristics include: a reference signal resource for sending the reference signal, a reference signal resource set identifier for sending the reference signal, a number of ports for sending the reference signal, a purpose of use of the reference signal, a frequency band for sending the reference signal, a frequency band combination for sending the reference signal, a component carrier for sending the reference signal, a bandwidth part for sending the reference signal, the reference signal type, or any combination thereof.

9. The method according to claim 1, further comprising: Sending a baseline transmission parameter set, wherein each of the one or more transmission parameter sets includes a set of differential values ​​of a corresponding transmission parameter set based at least in part on the baseline transmission parameter set, and wherein communicating with the receiving device is based at least in part on sending the baseline transmission parameter set.

10. The method of claim 1 , wherein sending the indication of the one or more transmission parameter sets comprises: The indication of the one or more transmission parameter sets is sent via: radio resource control signaling, a UE capability message, a medium access control MAC control element, or any combination thereof.

11. The method according to claim 1, wherein: Sending the indication of the one or more transmission parameter sets is based at least in part on the following: the one or more transmission parameter sets are valid between the transmission of two reference signals of the reference signal type, the one or more transmission parameter sets are valid at least in part based on the number of ports used to send the two reference signals not changing, the discontinuous reception activity time remains active for the UE, whether a measurement gap occurs between the transmission of the two reference signals, maintaining an active bandwidth portion, maintaining a dual connectivity configuration, maintaining a carrier aggregation configuration, the transmission power of the two reference signals meets a power threshold, or any combination thereof.

12. The method of claim 1, wherein a set of the one or more sets of transmission parameters comprises a time phase drift rate, one or more time difference thresholds, an amplitude difference threshold, a phase difference threshold, or any combination thereof.

13. The method of claim 1, wherein a set of the one or more sets of transmission parameters comprises a time domain model for implementing the bundling of the reference signals at the receiving device.

14. The method of claim 1, wherein the reference signal type comprises a sounding reference signal, a demodulation reference signal, an uplink reference signal, a sidelink reference signal, or any combination thereof.

15. The method of claim 1, wherein the characteristic further comprises an amplitude of one or more of the reference signals transmitted from the one or more ports.

16. The method of claim 1, wherein the receiving device comprises a base station, a second UE, or an additional wireless device.

17. A method for wireless communication at a receiving device, comprising: receiving, from a user equipment (UE), an indication of one or more sets of transmission parameters for a reference signal type, the indication being associated with how a characteristic of one or more ports of the UE varies across time, wherein the characteristic comprises at least a phase of one or more of the reference signals sent from the one or more ports; bundling the reference signals of the reference signal type sent by the UE based at least in part on the indication of the one or more sets of transmission parameters; as well as Communicating with the UE is performed based at least in part on the one or more sets of transmission parameters and the reference signal bundled with the reference signal type.

18. The method according to claim 17, further comprising: receiving a first reference signal of the reference signal type from the UE; as well as A second reference signal of the reference signal type is received from the UE, wherein bundling the reference signals of the reference signal type comprises combining the first reference signal and the second reference signal based at least in part on the one or more sets of transmission parameters.

19. The method of claim 17, wherein receiving the indication of the one or more transmission parameter sets comprises: A time gap indication is received for each of the one or more sets of transmission parameters, the time gap indication comprising a time duration during which the set of transmission parameters is constant.

20. The method according to claim 19, further comprising: receiving a first reference signal of the reference signal type from the UE at a first time; receiving a second reference signal of the reference signal type from the UE at a second time; as well as Determine that the difference between the second time and the first time is greater than the duration indicated by the time gap indication, wherein the first reference signal and the second reference signal are not bundled based at least in part on the fact that the difference between the second time and the first time is greater than the duration and the transmission parameter set is not constant for the difference between the second time and the first time.

21. The method of claim 19, wherein each of the one or more sets of transmission parameters is valid for a respective time slot.

22. The method of claim 19, wherein the time gap indication comprises a time difference for which a time phase drift value is valid.

23. The method of claim 17, wherein receiving the indication of the one or more transmission parameter sets comprises: The indication of the one or more transmission parameter sets is received according to a port of the UE.

24. The method of claim 17, wherein receiving the indication of the one or more transmission parameter sets comprises: A variance associated with uncertainty of the one or more sets of transmission parameters is received.

25. The method of claim 17, further comprising: Each of the one or more transmission parameter sets is determined to be suitable for a respective transmission characteristic.

26. The method of claim 25, wherein the transmission characteristics include: a reference signal resource for sending the reference signal, a reference signal resource set identifier for sending the reference signal, a number of ports for sending the reference signal, a purpose of use of the reference signal, a frequency band for sending the reference signal, a frequency band combination for sending the reference signal, a component carrier for sending the reference signal, a bandwidth part for sending the reference signal, the reference signal type, or any combination thereof.

27. The method of claim 17, further comprising: Receiving a baseline transmission parameter set, wherein each of the one or more transmission parameter sets includes a set of differential values ​​of a corresponding transmission parameter set based at least in part on the baseline transmission parameter set, and wherein communicating with the UE is based at least in part on receiving the baseline transmission parameter set.

28. The method of claim 17, wherein receiving the indication of the one or more transmission parameter sets comprises: The indication of the one or more sets of transmission parameters is received via: radio resource control signaling, a UE capability message, a medium access control MAC control element, or any combination thereof.

29. The method of claim 17, wherein: Receiving the indication of the one or more transmission parameter sets is based at least in part on the following: the one or more transmission parameter sets are valid between the transmission of two reference signals of the reference signal type, the one or more transmission parameter sets are valid at least in part based on the number of ports used to send the two reference signals not changing, the discontinuous reception activity time remains active for the UE, whether a measurement gap occurs between the transmission of the two reference signals, maintaining an active bandwidth portion, maintaining a dual connectivity configuration, maintaining a carrier aggregation configuration, the transmission power of the two reference signals meets a power threshold, or any combination thereof.

30. The method of claim 17, wherein a set of the one or more sets of transmission parameters comprises a time phase drift rate, one or more time difference thresholds, an amplitude difference threshold, a phase difference threshold, or any combination thereof.

31. The method of claim 17, wherein a set of the one or more sets of transmission parameters comprises a time domain model for implementing the bundling of the reference signals at the receiving device.

32. The method of claim 17, wherein the reference signal type comprises a sounding reference signal, a demodulation reference signal, an uplink reference signal, a sidelink reference signal, or any combination thereof.

33. The method of claim 17, wherein the characteristic further comprises an amplitude of one or more of the reference signals transmitted from the one or more ports.

34. The method of claim 17, wherein the receiving device comprises a base station, a second UE, or an additional wireless device.

35. An apparatus for wireless communication at a user equipment UE, comprising: means for determining one or more sets of transmission parameters associated with a reference signal type, the one or more sets of transmission parameters being used to enable a receiving device to bundle reference signals of the reference signal type; means for sending an indication of the one or more sets of transmission parameters to the receiving device, the indication associated with how a characteristic of one or more ports of the UE varies across time, wherein the characteristic comprises at least a phase of one or more of the reference signals sent from the one or more ports; as well as Means for communicating with the receiving device based at least in part on the one or more sets of transmission parameters.

36. The apparatus of claim 35, wherein the means for sending the indication of the one or more transmission parameter sets comprises: Means for sending a time gap indication for each of the one or more sets of transmission parameters, the time gap indication comprising a time duration during which the set of transmission parameters is constant.

37. The apparatus of claim 35, wherein the means for sending the indication of the one or more transmission parameter sets comprises: Means for sending the indication of the one or more transmission parameter sets per port of the UE.

38. The apparatus of claim 35, wherein the means for sending the indication of the one or more transmission parameter sets comprises: Means for transmitting a variance associated with uncertainty of the one or more sets of transmission parameters.

39. The apparatus of claim 35, wherein the means for determining the one or more sets of transmission parameters comprises: Means for determining each of the one or more sets of transmission parameters based at least in part on a transmission characteristic for which each set of transmission parameters is applicable.

40. The apparatus of claim 35, further comprising: Means for sending a baseline transmission parameter set, wherein each of the one or more transmission parameter sets includes a set of differential values ​​of a corresponding transmission parameter set based at least in part on the baseline transmission parameter set, and wherein communicating with the receiving device is based at least in part on sending the baseline transmission parameter set.

41. The apparatus of claim 35, wherein the means for sending the indication of the one or more transmission parameter sets comprises: Means for sending the indication of the one or more transmission parameter sets via: radio resource control signaling, a UE capability message, a medium access control MAC control element, or any combination thereof.

42. An apparatus for wireless communication at a receiving device, comprising: means for receiving, from a user equipment, UE, an indication of one or more sets of transmission parameters for a reference signal type, the indication being associated with how characteristics of one or more ports of the UE vary across time, wherein the characteristics include at least a phase of one or more of the reference signals sent from the one or more ports; means for bundling the reference signals of the reference signal type transmitted by the UE based at least in part on the indication of the one or more sets of transmission parameters; as well as Means for communicating with the UE based at least in part on the one or more sets of transmission parameters and the reference signal bundled with the reference signal type.

43. The apparatus of claim 42, further comprising: component, configured to receive a first reference signal of the reference signal type from the UE; as well as A second reference signal of the reference signal type is received from the UE, wherein bundling the reference signals of the reference signal type comprises combining the first reference signal and the second reference signal based at least in part on the one or more sets of transmission parameters.

44. The apparatus of claim 42, wherein the means for receiving the indication of the one or more sets of transmission parameters comprises: Means for receiving a time gap indication for each of the one or more sets of transmission parameters, the time gap indication comprising a time duration during which the set of transmission parameters is constant.

45. The apparatus of claim 44, further comprising: means for receiving a first reference signal of the reference signal type from the UE at a first time; means for receiving a second reference signal of the reference signal type from the UE at a second time; as well as A component for determining that the difference between the second time and the first time is greater than the duration indicated by the time gap indication, wherein the first reference signal and the second reference signal are not bundled based at least in part on the difference between the second time and the first time being greater than the duration and the transmission parameter set being not constant for the difference between the second time and the first time.

46. ​​The apparatus of claim 42, wherein the means for receiving the indication of the one or more sets of transmission parameters comprises: Means for receiving the indication of the one or more transmission parameter sets per port of the UE.

47. An apparatus for wireless communication at a user equipment UE, comprising: processor, a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: determining one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets being used to enable a receiving device to bundle reference signals of the reference signal type; sending an indication of the one or more sets of transmission parameters to the receiving device, the indication being associated with how a characteristic of one or more ports of the UE varies across time, wherein the characteristic comprises at least a phase of one or more of the reference signals sent from the one or more ports; as well as Communicating with the receiving device is performed based at least in part on the one or more sets of transmission parameters.

48. An apparatus for wireless communication at a receiving device, comprising: processor, a memory coupled to the processor; as well as instructions stored in the memory and executable by the processor to cause the apparatus to: receiving, from a user equipment (UE), an indication of one or more sets of transmission parameters for a reference signal type, the indication being associated with how a characteristic of one or more ports of the UE varies across time, wherein the characteristic comprises at least a phase of one or more of the reference signals sent from the one or more ports; bundling the reference signals of the reference signal type sent by the UE based at least in part on the indication of the one or more sets of transmission parameters; as well as Communicating with the UE is performed based at least in part on the one or more sets of transmission parameters and the reference signal bundled with the reference signal type.

49. A non-transitory computer readable medium storing code for wireless communication at a user equipment (UE), the code comprising instructions executable by a processor to: determining one or more transmission parameter sets associated with a reference signal type, the one or more transmission parameter sets being used to enable a receiving device to bundle reference signals of the reference signal type; sending an indication of the one or more sets of transmission parameters to the receiving device, the indication being associated with how a characteristic of one or more ports of the UE varies across time, wherein the characteristic comprises at least a phase of one or more of the reference signals sent from the one or more ports; as well as Communicating with the receiving device is performed based at least in part on the one or more sets of transmission parameters.

50. A non-transitory computer readable medium storing code for wireless communication at a receiving device, the code comprising instructions executable by a processor to: receiving, from a user equipment (UE), an indication of one or more sets of transmission parameters for a reference signal type, the indication being associated with how a characteristic of one or more ports of the UE varies across time, wherein the characteristic comprises at least a phase of one or more of the reference signals sent from the one or more ports; bundling the reference signals of the reference signal type sent by the UE based at least in part on the indication of the one or more sets of transmission parameters; as well as Communicating with the UE is performed based at least in part on the one or more sets of transmission parameters and the reference signal bundled with the reference signal type.

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