Method and apparatus for cross-slot channel estimation

Abstract

Methods, systems, and apparatus for wireless communication are described. A user equipment (UE) can receive control signaling from a base station indicating a set of resources for transmitting an uplink shared channel transmission set and a set of demodulation reference signals (DMRS) with phase coherence across a transmission time interval (TTI) set. The UE can receive from the base station a control message indicating the cancellation of a first resource in the resource set. The UE can determine one or more phase continuity conditions for the resource set based on the received control message indicating the cancellation of the first resource. The UE can transmit at least a subset of the uplink shared channel transmission set and at least a subset of the DMRS set in the remaining resources in the resource set according to the one or more phase continuity conditions.

Description

[0001] Cross-references

[0002] This patent application claims priority to U.S. Patent Application No. 17 / 163,277, filed January 29, 2021, entitled “TECHNIQUES FOR CROSS-SLOT CHANNEL ESTIMATION”, which has been assigned to the assignee of this application and is expressly incorporated herein by reference. Technical Field

[0003] The following relates to wireless communication, including techniques for cross-timeslot channel estimation. Background Technology

[0004] Wireless communication systems are widely deployed to provide various types of communication content, such as voice, video, packet data, message sending and receiving, broadcasting, and so on. These systems can support communication with multiple users by sharing available system resources (e.g., time, frequency, and power). Examples of such multiple access systems include fourth-generation (4G) systems (such as Long Term Evolution (LTE) systems, LTE-A Advanced (LTE-A) systems, or LTE-A Pro systems) and fifth-generation (5G) systems, which may be referred to as New Radio (NR) systems. These systems can employ various technologies, such as Code Division Multiple Access (CDMA), Time Division Multiple Access (TDMA), Frequency Division Multiple Access (FDMA), Orthogonal FDMA (OFDMA), or Discrete Fourier Transform Extended 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 of which simultaneously supports communication from multiple communication devices, which may also be referred to as User Equipment (UE).

[0005] Some wireless communication systems can aggregate phase-coherent demodulation reference signals (DMRS) to improve channel estimation and enhance the reliability of wireless communication. For example, some UEs can combine multiple Physical Uplink Shared Channel (PUSCH) transmissions to coherently transmit DMRS across multiple time slots, enabling the base station to aggregate DMRS, perform more accurate channel estimation, and demodulate PUSCH transmissions.

[0006] Overview

[0007] The described techniques relate to improved methods, systems, apparatuses, and devices for supporting techniques used in cross-slot channel estimation. Generally, this disclosure provides techniques for signaling and / or configuring phase continuity conditions to maintain phase continuity (e.g., phase coherence) on demodulation reference signals (DMRS) across bundles of physical uplink shared channels (PUSCHs). Specifically, user equipment (UE) may be configured with one or more phase continuity conditions that define whether (or not) phase continuity is maintained on DMRS across multiple PUSCHs and / or multiple time-slot bundles in the event that resources allocated for DMRS are cancelled or revoked. For example, the UE may receive resource allocations for transmitting a PUSCH transport set and a DMRS set that have phase continuity across multiple PUSCH transport sets, across multiple time slots, or both. Subsequently, a portion of the allocated resources may be cancelled or revoked. In this example, the UE can determine one or more phase continuity conditions for the remaining, uncancelled resources, and can transmit PUSCH transmissions and DMRS within the uncancelled resources based on the determined one or more phase continuity conditions. Subsequently, the base station can be configured to aggregate at least a subset of the DMRS to perform channel estimation, and can demodulate (decode) the PUSCH transmissions based on the channel estimation.

[0008] A method for performing wireless communication at a UE is described. The method may include: receiving control signaling from a base station indicating a set of resources for transmitting a set of multiple uplink shared channel transmissions and a set of multiple DMRSs, the set of multiple DMRSs having phase continuity across a set of multiple transmission time intervals (TTIs); receiving from the base station a control message indicating cancellation of a first resource among the set of multiple resources; determining one or more phase continuity conditions for the set of multiple resources based on the received control message indicating cancellation of the first resource; and transmitting at least a subset of the set of multiple uplink shared channel transmissions and at least a subset of the set of multiple DMRSs in one or more remaining resources among the set of multiple resources according to the one or more phase continuity conditions.

[0009] An apparatus for performing 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. These instructions are executable by the processor to cause the apparatus to: receive control signaling from a base station, the control signaling indicating a set of resources for transmitting a set of multiple uplink shared channel transmissions and a set of multiple DMRSs, the set of multiple DMRSs having phase continuity across a set of multiple TTIs; receive from the base station a control message indicating cancellation of a first resource among the set of multiple resources; determine one or more phase continuity conditions for the set of multiple resources based on receiving the control message indicating cancellation of the first resource; and transmit at least a subset of the set of multiple uplink shared channel transmissions and at least a subset of the set of multiple DMRSs in one or more remaining resources among the set of multiple resources, according to the one or more phase continuity conditions.

[0010] Another apparatus for wireless communication at a UE is described. The apparatus may include: means for receiving control signaling from a base station, the control signaling indicating a set of resources for transmitting a set of multiple uplink shared channel transmissions and a set of multiple DMRSs, the set of multiple DMRSs having phase continuity across a set of multiple TTIs; means for receiving from the base station a control message indicating cancellation of a first resource among the set of multiple resources; means for determining one or more phase continuity conditions for the set of multiple resources based on receiving the control message indicating cancellation of the first resource; and means for transmitting at least a subset of the set of multiple uplink shared channel transmissions and at least a subset of the set of multiple DMRSs in one or more remaining resources among the set of multiple resources according to the one or more phase continuity conditions.

[0011] A non-transient computer-readable medium is described, storing code for wireless communication at a UE. The code may include instructions executable by a processor to: receive control signaling from a base station instructing for transmitting a set of multiple uplink shared channel transmissions and a set of multiple DMRSs having phase continuity across a set of multiple TTIs; receive from the base station a control message instructing the cancellation of a first resource among the multiple resources; determine one or more phase continuity conditions for the multiple resources based on the received control message instructing the cancellation of the first resource; and transmit at least a subset of the multiple uplink shared channel transmissions and at least a subset of the multiple DMRSs in one or more remaining resources among the multiple resources, according to the one or more phase continuity conditions.

[0012] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for transmitting a subset of the set of multiple DMRSs having phase continuity across the set of multiple TTIs, based on a time interval between the start of the first resource and the next uplink shared channel transmission in the set of multiple uplink shared channel transmissions satisfying a threshold time interval.

[0013] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the threshold time interval includes the number of symbol periods.

[0014] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, devices or instructions for receiving an indication of the threshold time interval from the base station.

[0015] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for transmitting an indication of the threshold time interval to the base station.

[0016] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the transmission may include operations, features, means, or instructions for: transmitting a first subset of the set of multiple DMRS having a first phase coherence, and a second subset of the set of multiple DMRS having a second phase coherence, based on a time interval between the start of the first resource and the next uplink shared channel transmission in the set of multiple uplink shared channel transmissions not satisfying a threshold time interval.

[0017] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the first subset of the set of multiple DMRSs may be transmitted before the first resource, and the second subset of the set of multiple DMRSs may be transmitted after the first resource.

[0018] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the transmission may include operations, features, means or instructions for transmitting a first subset of the set of DMRSs having a first phase coherence and a second subset of the set of DMRSs having a second phase coherence, based on the first resource including one or more symbols allocated to one of the set of DMRSs.

[0019] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the one or more symbols assigned to the set of multiple DMRSs include all symbols assigned to the set of multiple DMRSs within the TTI of the set of multiple TTIs.

[0020] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the transmission may include operations, features, means or instructions for transmitting the subset of the set of multiple DMRSs having phase coherence across the set of multiple TTIs, based on the first resource not including any symbols allocated for the set of multiple DMRSs.

[0021] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for transmitting to the base station an indication of one or more phase continuity conditions supported by the UE, wherein receiving the control message, determining the one or more phase continuity conditions, or both may be based on transmitting the indication of one or more phase continuity conditions supported by the UE.

[0022] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, for each of the multiple TTIs in the set, the multiple resources include a first subset of resources allocated for the multiple uplink shared channel transmissions and a second subset of resources allocated for the multiple DMRSs.

[0023] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the set of multiple uplink shared channel transmissions includes a set of multiple repetitions of the same uplink shared channel transmission.

[0024] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the set of multiple uplink shared channel transmissions includes a first uplink shared channel transmission and a second uplink shared channel transmission different from the first uplink shared channel transmission.

[0025] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the set of multiple TTIs includes a set of multiple time slots.

[0026] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the control message indicating the cancellation includes an uplink cancellation indication message.

[0027] A method for wireless communication at a base station is described. The method may include: transmitting control signaling to a UE indicating a set of resources for transmitting a set of multiple uplink shared channel transmissions and a set of multiple DMRSs, the set of multiple DMRSs having phase continuity across a set of multiple TTIs; transmitting to the UE a control message indicating cancellation of a first resource among the set of multiple resources; determining one or more phase continuity conditions for the set of multiple resources based on the transmission of the control message indicating cancellation of the first resource; and receiving at least a subset of the set of multiple uplink shared channel transmissions and at least a subset of the set of multiple DMRSs in one or more remaining resources among the set of multiple resources, according to the one or more phase continuity conditions.

[0028] An apparatus for wireless communication at a base station is described. The apparatus may include a processor, a memory coupled to the processor, and instructions stored in the memory. These instructions are executable by the processor to cause the apparatus to: transmit control signaling to a UE, the control signaling indicating a set of resources for transmitting a set of multiple uplink shared channel transmissions and a set of multiple DMRSs, the set of multiple DMRSs having phase continuity across a set of multiple TTIs; transmit to the UE a control message indicating cancellation of a first resource among the set of multiple resources; determine one or more phase continuity conditions for the set of multiple resources based on the control message indicating cancellation of the first resource; and receive at least a subset of the set of multiple uplink shared channel transmissions and at least a subset of the set of multiple DMRSs in one or more remaining resources among the set of multiple resources, according to the one or more phase continuity conditions.

[0029] Another apparatus for wireless communication at a base station is described. The apparatus may include: means for transmitting control signaling to a UE, the control signaling indicating a set of resources for transmitting a set of multiple uplink shared channel transmissions and a set of multiple DMRSs, the set of multiple DMRSs having phase continuity across a set of multiple TTIs; means for transmitting to the UE a control message indicating cancellation of a first resource among the set of multiple resources; means for determining one or more phase continuity conditions for the set of multiple resources based on the transmission of the control message indicating cancellation of the first resource; and means for receiving at least a subset of the set of multiple uplink shared channel transmissions and at least a subset of the set of multiple DMRSs in one or more remaining resources among the set of multiple resources according to the one or more phase continuity conditions.

[0030] A non-transient computer-readable medium storing code for wireless communication at a base station is described. The code may include instructions executable by a processor to: transmit control signaling to a UE indicating a set of resources for transmitting a set of multiple uplink shared channel transmissions and a set of multiple DMRSs, the set of multiple DMRSs having phase continuity across a set of multiple TTIs; transmit to the UE a control message indicating cancellation of a first resource among the set of multiple resources; determine one or more phase continuity conditions for the set of multiple resources based on the control message indicating cancellation of the first resource; and receive at least a subset of the set of multiple uplink shared channel transmissions and at least a subset of the set of multiple DMRSs in one or more remaining resources among the set of multiple resources, according to the one or more phase continuity conditions.

[0031] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for receiving a subset of the set of multiple DMRSs having phase continuity across the set of multiple TTIs, based on a time interval between the start of the first resource and the next uplink shared channel transmission in the set of multiple uplink shared channel transmissions satisfying a threshold time interval.

[0032] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the threshold time interval includes the number of symbol periods.

[0033] Some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein may further include operations, features, means, or instructions for transmitting an indication of the threshold time interval to the UE.

[0034] Some examples of the methods, apparatus (devices), and non-transient computer-readable media described herein may further include operations, features, means, or instructions for receiving an indication of the threshold time interval from the UE.

[0035] In some examples of the methods, apparatuses, and non-transient computer-readable media described herein, receiving may include operations, features, means, or instructions for the following actions: receiving a first subset of the set of multiple DMRS having a first phase coherence and a second subset of the set of multiple DMRS having a second phase coherence based on a time interval between the start of the first resource and the next uplink shared channel transmission in the set of multiple uplink shared channel transmissions not satisfying a threshold time interval.

[0036] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the first subset of the set of multiple DMRSs may be received before the first resource, and the second subset of the set of multiple DMRSs may be received after the first resource.

[0037] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, receiving may include operations, features, means, or instructions for receiving a first subset of the set of DMRS having a first phase coherence, and a second subset of the set of DMRS having a second phase coherence, based on the first resource including one or more symbols assigned to one of the set of DMRS.

[0038] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the one or more symbols assigned to the set of multiple DMRSs include all symbols assigned to the set of multiple DMRSs within the TTI of the set of multiple TTIs.

[0039] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, receiving may include operations, features, means, or instructions for receiving a subset of the set of multiple DMRSs that are phase-coherent across the set of multiple TTIs, based on the fact that the first resource does not include any symbols allocated for the set of multiple DMRSs.

[0040] Some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for receiving an indication from the UE for one or more phase continuity conditions supported by the UE, wherein transmitting the control message, determining the one or more phase continuity conditions, or both may be based on receiving the indication for one or more phase continuity conditions supported by the UE.

[0041] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, for each of the multiple TTIs in the set of multiple resources, the set of multiple resources includes a first subset of resources allocated for the multiple uplink shared channel transmissions and a second subset of resources allocated for the multiple DMRSs.

[0042] In some examples of the methods, apparatus (devices) and non-transient computer-readable media described herein, the set of multiple uplink shared channel transmissions includes a set of multiple repetitions of the same uplink shared channel transmission, or the set of multiple uplink shared channel transmissions includes a first uplink shared channel transmission and a second uplink shared channel transmission different from the first uplink shared channel transmission.

[0043] Examples of the methods, apparatus (devices) and non-transient computer-readable media described herein may further include operations, features, means or instructions for determining a channel estimate based on a subset of the multiple DMRSs aggregated in the document, and demodulating the subset of the multiple uplink shared channel transmissions based on the channel estimate. Brief description of the attached diagram

[0045] Figure 1 Examples of wireless communication systems that support techniques for cross-timeslot channel estimation according to various aspects of this disclosure are explained.

[0046] Figure 2 Examples of resource allocation supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure are explained.

[0047] Figure 3 Examples of resource allocation supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure are explained.

[0048] Figure 4 Examples of wireless communication systems that support techniques for cross-timeslot channel estimation according to various aspects of this disclosure are explained.

[0049] Figure 5 Examples of resource allocation supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure are explained.

[0050] Figure 6 Examples of resource allocation supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure are explained.

[0051] Figure 7 Examples of resource allocation supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure are explained.

[0052] Figure 8 An example of the process flow supporting techniques for cross-timeslot channel estimation based on various aspects of this disclosure is explained.

[0053] Figure 9 and 10 A block diagram of an apparatus supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure is shown.

[0054] Figure 11 A block diagram of a communication manager supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure is shown.

[0055] Figure 12 A diagram of a system including a device supporting techniques for cross-slot channel estimation, according to various aspects of this disclosure, is shown.

[0056] Figure 13 and 14 A block diagram of an apparatus supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure is shown.

[0057] Figure 15 A block diagram of a communication manager supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure is shown.

[0058] Figure 16 A diagram of a system including a device supporting techniques for cross-slot channel estimation, according to various aspects of this disclosure, is shown.

[0059] Figure 17 and 18 A flowchart illustrating a method for cross-slot channel estimation techniques according to various aspects of this disclosure is shown.

[0060] Detailed description

[0061] Some wireless communication systems can bundle phase-coherent demodulation reference signals (DMRS) to improve channel estimation and enhance the reliability of wireless communication. For example, some user equipment (UEs) can combine bundled uplink shared channel transmissions (e.g., physical uplink shared channel (PUSCH) repetitions) to transmit phase-continuous DMRS across multiple time slots, enabling the base station to aggregate DMRS, perform more accurate channel estimation, and demodulate uplink shared channel transmissions. In some cases, phase-continuous DMRS across multiple time slots and / or multiple transmissions can be referred to as being "bundled" across multiple time slots and / or multiple transmissions. However, current wireless communication systems do not provide rules or other configurations that instruct the UE to maintain (or not maintain) the phase continuity (e.g., phase coherence) of bundled DMRS across multiple time slots if some resources allocated for DMRS or other uplink transmissions are cancelled. For example, a UE can receive resource allocations for coherently transmitting a set of PUSCH transmissions and a set of phase-coherent DMRS across multiple time slots. In this example, if a portion of the resources are subsequently canceled or revoked, it is unclear whether the UE expects to maintain phase coherence across the DMRS.

[0062] Therefore, aspects of this disclosure relate to techniques for signaling and / or configuring phase continuity conditions to maintain phase continuity of DMRS across multiple PUSCH transmissions and / or multiple time-slot bundles. Furthermore, for the purposes of this disclosure, the terms "phase continuity," "phase coherence," and similar terms may be used interchangeably. According to some aspects of this disclosure, the UE can be configured with multiple phase continuity conditions that define a set of rules for whether (or not) phase continuity is maintained over DMRS across multiple PUSCH transmissions and / or multiple time-slot bundles in the event that resources allocated for the DMRS are cancelled or revoked.

[0063] For example, a UE may receive resource allocations for coherently transmitting a set of PUSCH transports and a set of DMRSs, the DMRS set spanning multiple time slots, spanning a set of PUSCH transports, or both having phase continuity. In this case, the UE may be configured to transmit both the set of PUSCH transports and the associated DMRSs with phase continuity across multiple time slots. Subsequently, a portion of the allocated resources may be cancelled or revoked. In this example, the UE may determine the phase continuity conditions of the remaining, uncancelled resources and transmit PUSCH transports and DMRSs within the uncancelled resources according to the determined phase continuity conditions. Subsequently, the base station may aggregate the DMRSs with phase continuity to perform channel estimation (e.g., cross-time slot channel estimation) and may demodulate (decode) the PUSCH transports with phase continuity based on the channel estimation.

[0064] In some aspects, phase continuity conditions can define rules or sets of conditions that indicate whether phase continuity (e.g., phase coherence) should be maintained (or not maintained) across multiple time-slot bundles of DMRS when a portion of allocated resources is cancelled or revoked. According to some phase continuity conditions, phase continuity (e.g., phase coherence) of DMRS can be maintained across multiple PUSCH transmissions and / or multiple time slots even though resources are cancelled. According to other phase continuity conditions, phase continuity can be maintained across all time slots if the duration of the cancelled resources is less than a certain time threshold. Under other phase continuity conditions, all resources used for DMRS within a time slot can be cancelled, and the UE can transmit multiple sets of DMRS with different phase continuity before and after the cancelled resources. In some aspects, the UE can be pre-configured with one or more phase continuity conditions. Additionally or alternatively, the network (e.g., a base station) can configure (e.g., signal) one or more phase continuity conditions to the UE via Radio Resource Control (RRC) signaling. In addition, the UE can be configured to indicate support for one or more phase continuity conditions via UE capability message transmission.

[0065] The aspects of this disclosure are initially described in the context of wireless communication systems. Additional aspects of this disclosure are described in the context of example resource configurations and example process flows. The aspects of this disclosure are further illustrated and described by way of apparatus diagrams, system diagrams, and flowcharts relating to techniques used for cross-timeslot channel estimation.

[0066] Figure 1 Examples of wireless communication systems 100 supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure are described. 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, wireless communication system 100 may be a Long Term Evolution (LTE) network, an Advanced LTE (LTE-A) network, an LTE-A Pro network, or a New Radio (NR) network. In some examples, wireless communication system 100 may support enhanced broadband communication, ultra-reliable (e.g., mission-critical) communication, low latency communication, communication with low-cost and low-complexity devices, or any combination thereof.

[0067] Base station 105 can be distributed across a geographical area to form wireless communication system 100, and can be different types of devices or devices with different capabilities. Base station 105 and UE 115 can communicate wirelessly via one or more communication links 125. Each base station 105 can provide a coverage area 110, and UE 115 and base station 105 can establish one or more communication links 125 on the coverage area 110. Coverage area 110 can be an example of a geographical area over which base station 105 and UE 115 can support signal communication according to one or more radio access technologies.

[0068] Each UE 115 can be distributed throughout the coverage area 110 of the wireless communication system 100, and each UE 115 can be stationary or mobile, or stationary and mobile at different times. Each UE 115 can be a different type of device or a device with different capabilities. Figure 1 The document describes some example UE 115s. The UE 115 described herein can communicate with various types of devices, such as other UE 115s, base station 105, or network equipment (e.g., core network nodes, relay equipment, integrated access and backhaul (IAB) nodes, or other network equipment). Figure 1 As shown in the image.

[0069] Each base station 105 may communicate with the core network 130, or with each other, or both. For example, base station 105 may interface with the core network 130 via one or more backhaul links 120 (e.g., via S1, N2, N3, or other interfaces). Base stations 105 may communicate with each other directly (e.g., directly between base stations 105), indirectly (e.g., via the core network 130), or directly and indirectly on backhaul links 120 (e.g., via X2, Xn, or other interfaces). In some examples, backhaul link 120 may be or include one or more radio links.

[0070] One or more of the base stations 105 described herein may include, or may be referred to by those skilled in the art as, base transceiver station, radio base station, access point, radio transceiver, B node, evolved B node (eNB), next-generation B node or gigabit B node (any of which may be referred to as gNB), home B node, home evolved B node, or other suitable terms.

[0071] UE 115 may include or be referred to as a mobile device, wireless device, remote device, handheld device, or subscriber device, or any other suitable term, wherein "device" may also be referred to as a cell, station, terminal, or client, etc. UE 115 may also include or be referred to as a personal electronic device, such as a cellular phone, personal digital assistant (PDA), tablet computer, laptop computer, or personal computer. In some examples, UE 115 may include or be referred to as a wireless local loop (WLL) station, Internet of Things (IoT) device, Internet of Everything (IoE) device, or machine-type communication (MTC) device, which may be implemented in various objects such as appliances or vehicles, meters, etc.

[0072] The UE 115 described herein can communicate with various types of devices, such as other UEs 115 that sometimes act as relays, as well as base station 105 and network equipment including macro eNBs or gNBs, small cell eNBs or gNBs, relay base stations, etc. Figure 1 As shown in the image.

[0073] UE 115 and base station 105 can wirelessly communicate with each other via one or more communication links 125 on one or more carriers. The term "carrier" can refer to a set of radio frequency spectrum resources having a defined physical layer structure for supporting communication link 125. For example, a carrier for communication link 125 may include a portion of the radio spectrum band (e.g., a bandwidth portion (BWP)) operating 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 may carry acquisition signaling (e.g., synchronization signals, system information), control signaling coordinating carrier operation, user data, or other signaling. Wireless communication system 100 may support communication with UE 115 using carrier aggregation or multi-carrier operation. UE 115 may be configured to have multiple downlink component carriers and one or more uplink component carriers according to a carrier aggregation configuration. Carrier aggregation can be used in conjunction with frequency division duplex (FDD) and time division duplex (TDD) component carriers.

[0074] In some examples (e.g., in a carrier aggregation configuration), the carrier may also have acquisition signaling or control signaling to coordinate the operation of other carriers. The 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 for discovery by UE 115. The carrier may operate in an autonomous mode in which initial acquisition and connection can be performed by UE 115 via that carrier, or in a non-autonomous mode in which the carrier may connect to carriers anchored using different carriers (e.g., different carriers of the same or different radio access technologies).

[0075] The communication link 125 shown in the wireless communication system 100 may include uplink transmission from UE 115 to base station 105, or downlink transmission from base station 105 to UE 115. The carrier may carry downlink or uplink communication (e.g., in FDD mode), or may be configured to carry both downlink and uplink communication (e.g., in TDD mode).

[0076] A carrier may be associated with a specific bandwidth of the radio frequency spectrum, and in some examples, the carrier bandwidth may be referred to as the carrier or the “system bandwidth” of the wireless communication system 100. For example, the carrier bandwidth may be one of several defined bandwidths (e.g., 1.4, 3, 5, 10, 15, 20, 40, or 80 MHz) of a carrier for a particular radio access technology. Devices of the wireless communication system 100 (e.g., base station 105, UE 115, or both) may have a hardware configuration that supports communication over a specific carrier bandwidth, or may be configurable to support communication over a single carrier bandwidth within a set of carrier bandwidths. In some examples, the wireless communication system 100 may include a base station 105 or 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 over a portion (e.g., a subband, BWP) or all of the carrier bandwidth.

[0077] The signal waveform transmitted on the carrier may include multiple subcarriers (e.g., using multi-carrier modulation (MCM) techniques, such as orthogonal frequency division multiplexing (OFDM) or discrete Fourier transform extended OFDM (DFT-S-OFDM)). In a system employing MCM, a resource element may include a symbol period (e.g., the duration of a modulation symbol) and a subcarrier, where the symbol period and subcarrier spacing are inversely related. The number of bits carried by each resource element may depend on the modulation scheme (e.g., the order of the modulation scheme, the code rate of the modulation scheme, or both). Thus, the more resource elements the UE 115 receives and the higher the order of the modulation scheme, the higher the data rate the UE 115 can achieve. Wireless communication resources can refer to a combination of radio frequency spectrum resources, temporal resources, and spatial resources (e.g., spatial layers or beams), and using multiple spatial layers can further improve the data rate or data integrity of communication with the UE 115.

[0078] One or more parameter designs for a carrier can be supported, where the parameter design may include a subcarrier spacing (Δf) and a cyclic prefix. A carrier can be divided into one or more BWPs with the same or different parameter designs. In some examples, UE 115 can be configured with multiple BWPs. In some examples, a single BWP for a carrier can be active at a given time, and communication for UE 115 can be limited to one or more active BWPs.

[0079] The time interval of base station 105 or UE 115 can be expressed as a multiple of a basic time unit, such as the sampling period T. s =1 / (Δf) max ·N f ) seconds, where Δf max This can represent the maximum supported subcarrier spacing, while Nf This can represent the maximum supported Discrete Fourier Transform (DFT) size. The time interval of the communication resources can be organized according to radio frames, each with a specified duration (e.g., 10 milliseconds (ms)). Each radio frame can be identified by a System Frame Number (SFN) (e.g., ranging from 0 to 1023).

[0080] 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, a frame may (e.g., in the time domain) be divided into subframes, and each subframe may be further divided into several 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 several symbol periods (e.g., depending on the length of the cyclic prefix added before each symbol period). In some wireless communication systems 100, time slots may be further divided into multiple mini-time slots containing one or more symbols. Excluding the cyclic prefix, each symbol period may contain one or more (e.g., N) symbols. f (Number) sampling periods. The duration of a symbol period can depend on the subcarrier interval or the operating frequency band.

[0081] A subframe, time slot, mini-slot, or symbol can be the smallest scheduling unit of the wireless communication system 100 (e.g., in the time domain) and can be referred to as a transmission time interval (TTI). In some examples, the duration of the TTI (e.g., the number of symbol periods in the TTI) can be variable. Additionally or alternatively, the smallest scheduling unit of the wireless communication system 100 can be dynamically selected (e.g., in bursts of shortened TTIs (sTTIs)).

[0082] Physical channels can be multiplexed on a carrier using various techniques. Physical control channels and physical data channels can be multiplexed on a downlink carrier, for example, using one or more of Time Division Multiplexing (TDM), Frequency Division Multiplexing (FDM), or a hybrid TDM-FDM technique. A control region (e.g., a control resource set (CORESET)) for physical control channels can be defined by the number of symbol periods and can extend across the system bandwidth or a subset of the system bandwidth of the carrier. One or more control regions (e.g., CORESETs) can be configured for a set of UEs 115. For example, one or more of the UEs 115 can monitor or search control regions for control information based on one or more search space sets, and each search space set can include one or more control channel candidates in one or more aggregation levels arranged in a cascaded manner. An aggregation level for control channel candidates can refer to the number of control channel resources (e.g., control channel elements (CCEs)) associated with coded information in a control information format having a given payload size. The search space set may include a common search space set configured to send control information to multiple UEs 115 and a UE-specific search space set configured to send control information to a specific UE 115.

[0083] In some examples, base station 105 may be mobile, and thus provide communication coverage to 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. Wireless communication system 100 may include, for example, a heterogeneous network, in which different types of base stations 105 use the same or different radio access technologies to provide coverage to various geographic coverage areas 110.

[0084] Wireless communication system 100 may be configured to support ultra-reliable communication or low latency communication, or various combinations thereof. For example, wireless communication system 100 may be configured to support ultra-reliable low latency communication (URLLC) or mission-critical communication. UE 115 may be designed to support ultra-reliable, low latency, or mission-critical functions (e.g., mission-critical functions). Ultra-reliable communication may include private or group communication and may be supported by one or more mission-critical services, such as Mission-Critical Talk-to-Talk (MCPTT), Mission-Critical Video (MCVideo), or Mission-Critical Data (MCData)). Support for mission-critical functions may include prioritization of services, and mission-critical services may be used for public safety or general business applications. The terms ultra-reliable, low latency, mission-critical, and ultra-reliable low latency are used interchangeably herein.

[0085] In some examples, UE 115 may also be able to communicate directly with other UE 115 on a device-to-device (D2D) communication link 135 (e.g., using a peer-to-peer (P2P) or D2D protocol). One or more UE 115s utilizing D2D communication may be within the geographic coverage area 110 of base station 105. Other UE 115s in such a group may be outside the geographic coverage area 110 of base station 105 or may be unable to receive transmissions from base station 105 for other reasons. In some examples, groups of UE 115s communicating via D2D communication may utilize a one-to-many (1:M) system, where each UE 115 transmits to every other UE 115 in the group. In some examples, base station 105 facilitates the scheduling of resources for D2D communication. In other cases, D2D communication is performed between the individual UE 115s without involving base station 105.

[0086] Core network 130 provides user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions. Core network 130 can be an evolved packet core (EPC) or a 5G core (5GC). The EPC or 5GC may include at least one control plane entity (e.g., a Mobility Management Entity (MME), Access and Mobility Management Function (AMF)) managing access and mobility, and at least one user plane entity (e.g., a Serving Gateway (S-GW), Packet Data Network (PDN) Gateway (P-GW), or User Plane Function (UPF)) routing packets or interconnecting to external networks. The control plane entity manages non-access stratum (NAS) functions, such as mobility, authentication, and bearer management of UE 115 served by base station 105 associated with core network 130. User IP packets can be delivered through the user plane entity, which provides IP address allocation and other functions. The user plane entity may be connected to one or more network operator IP services 150. The IP service 150 may include access to the Internet, intranet, IP Multimedia Subsystem (IMS), or packet-switched streaming services.

[0087] Some network devices (such as base station 105) may include sub-components, such as access network entity 140, which may be an example of an access node controller (ANC). Each access network entity 140 may communicate with each UE 115 through one or more other access network transport entities 145, which may be referred to as a radio headend, smart radio headend, or transmit / receive point (TRP). 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 headends and ANCs) or combined into a single network device (e.g., base station 105).

[0088] Wireless communication system 100 can operate using one or more frequency bands, typically in the range of 300 MHz to 300 GHz. Generally, the 300 MHz to 3 GHz band is referred to as a UHF band or decimeter band because the wavelengths range from approximately 1 decimeter to 1 meter. UHF waves can be blocked or redirected by buildings and environmental features, but these waves can penetrate various structures sufficiently for macrocells to provide service to UE 115 located indoors. Compared to transmissions using smaller frequencies and longer waves in the lower HF or VHF portions of the spectrum below 300 MHz, UHF wave transmission can be associated with smaller antennas and shorter ranges (e.g., less than 100 km).

[0089] Wireless communication system 100 may utilize both licensed and unlicensed radio spectrum bands. For example, wireless communication system 100 may employ licensed assisted access (LAA), LTE unlicensed (LTE-U) radio access technology, or NR technology in unlicensed frequency bands (such as the 5 GHz Industrial, Scientific, and Medical (ISM) band). When operating in unlicensed radio spectrum bands, devices (such as base station 105 and UE 115) may employ carrier sensing for collision detection and avoidance. In some examples, operation in unlicensed frequency bands may be based on carrier aggregation configuration (e.g., LAA) in coordination with component carriers operating in licensed frequency bands. Operation in unlicensed spectrum may include downlink transmissions, uplink transmissions, P2P transmissions, or D2D transmissions, etc.

[0090] Base station 105 or UE 115 may be equipped with multiple antennas that can be used to employ technologies such as transmit diversity, receive diversity, multiple-input multiple-output (MIMO) communication, or beamforming. The antennas of base station 105 or UE 115 may be located within one or more antenna arrays or antenna panels that can support MIMO operation 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 base station 105 may be located in different geographical locations. Base station 105 may have an antenna array with several rows and columns of antenna ports that base station 105 can use to support beamforming for communication with UE 115. Similarly, UE 115 may have one or more antenna arrays that can support various MIMO or beamforming operations. Additionally or alternatively, the antenna panel may support radio frequency beamforming for signals transmitted via the antenna ports.

[0091] Base station 105 or UE 115 can use MIMO communication to leverage multipath signal propagation and improve spectral efficiency by transmitting or receiving multiple signals via different spatial layers. This technique is known as spatial multiplexing. For example, a transmitting device may transmit multiple signals via different antennas or different combinations of antennas. Similarly, a receiving device may receive multiple signals via different antennas or different combinations of antennas. Each of the multiple signals may be referred to as a separate spatial stream and may carry bits associated with the same data stream (e.g., the same codeword) or different data streams (e.g., different codewords). Different spatial layers may be associated with different antenna ports used for channel measurement and reporting. MIMO techniques include single-user MIMO (SU-MIMO), where multiple spatial layers are transmitted to the same receiving device; and multi-user MIMO (MU-MIMO), where multiple spatial layers are transmitted to multiple devices.

[0092] Beamforming (also known as spatial filtering, directional transmission, or directional reception) is a signal processing technique that can be used at a transmitting or receiving device (e.g., base station 105, UE 115) to shape or guide an antenna beam (e.g., a transmit beam, a receive beam) along a spatial path between the transmitting and receiving devices. Beamforming can be achieved by combining signals transmitted via antenna elements of an antenna array, such that some signals propagating relative to a particular orientation of the antenna array experience constructive interference, while others experience destructive interference. Adjustments to the signals transmitted via the antenna elements may include the transmitting or receiving device applying amplitude offset, phase offset, or both to the signals carried via the antenna elements associated with that device. The adjustments associated with each antenna element may be defined by a beamforming weight set associated with a particular orientation (e.g., the antenna array relative to the transmitting or receiving device, or relative to some other orientation).

[0093] Base station 105 or UE 115 may use beamsweeping techniques as part of beamforming operations. For example, base station 105 may use multiple antennas or antenna arrays (e.g., antenna panels) to perform beamforming operations for directional communication with UE 115. Some signals (e.g., synchronization signals, reference signals, beam selection signals, or other control signals) may be transmitted multiple times by base station 105 in different directions. For example, base station 105 may transmit signals according to different beamforming weight sets associated with different transmission directions. Transmissions in different beam directions may be used (e.g., by the transmitting device (such as base station 105) or the receiving device (such as UE 115)) to identify the beam direction that base station 105 will use for later transmission or reception.

[0094] Some signals (such as data signals associated with a specific receiving device) may be transmitted by base station 105 in a single beam direction (e.g., the direction associated with the receiving device (such as UE 115)). In some examples, the beam direction associated with transmission along a single beam direction may be determined based on the signals transmitted in one or more beam directions. For example, UE 115 may receive one or more signals transmitted by base station 105 in different directions and may report to base station 105 an indication of the signals received by UE 115 with the highest signal quality or other acceptable signal quality.

[0095] In some examples, transmissions performed by a device (e.g., by base station 105 or UE 115) may be executed using multiple beam directions, and the device may use a combination of digital precoding or radio frequency beamforming to generate combined beams for transmission (e.g., from base station 105 to UE 115). UE 115 may report feedback indicating precoding weights for one or more beam directions, and this feedback may correspond to a configured number of beams across the system bandwidth or one or more subbands. Base station 105 may transmit reference signals that may be precoded or unprecoded (e.g., cell-specific reference signals (CRS), channel state information reference signals (CSI-RS)). UE 115 may provide feedback for beam selection, which may be a precoding matrix indicator (PMI) or codebook-based feedback (e.g., multi-panel type codebook, linear combination type codebook, port selection type codebook). Although these techniques are described with reference to signals transmitted by base station 105 in one or more directions, UE 115 may use similar techniques to transmit signals multiple times in different directions (e.g., to identify the beam direction used by UE 115 for subsequent transmission or reception) or to transmit signals in a single direction (e.g., to transmit data to a receiving device).

[0096] A receiver device (e.g., UE 115) may attempt multiple receive configurations (e.g., directional listening) when receiving various signals (such as synchronization signals, reference signals, beam selection signals, or other control signals) from base station 105. For example, the receiver device may attempt multiple receive directions by: receiving via different antenna subarrays; processing received signals according to different antenna subarrays; receiving according to different sets of receive beamforming weights applied to signals received at multiple antenna elements of the antenna array (e.g., different directional listening weight sets); or processing received signals according to different sets of receive beamforming weights applied to signals received at multiple antenna elements of the antenna array, any of which may be referred to as "listening" according to different receive configurations or receive directions. In some examples, the receiver device may use a single receive configuration to receive along a single beam direction (e.g., when receiving a data signal). The single receive configuration may be aligned on a beam direction determined based on listening according to different receive configuration directions (e.g., a beam direction determined to have the highest signal strength, highest signal-to-noise ratio (SNR), or other acceptable signal quality based on listening according to multiple beam directions).

[0097] The wireless communication system 100 can be a packet-based network operating according to a layered protocol stack. In the user plane, communication at the bearer or Packet Data Convergence Protocol (PDCP) layer can be IP-based. The Radio Link Control (RLC) layer performs packet segmentation and reassembly for communication on logical channels. The Media Access Control (MAC) layer performs priority handling and multiplexes logical channels into transport channels. The MAC layer can also use error detection, error correction, or both to support MAC layer retransmissions to improve link efficiency. In the control plane, the RRC protocol layer provides the establishment, configuration, and maintenance of RRC connections between the UE 115 and the base station 105 or core network 130 that support user plane data radio bearers. At the physical layer, transport channels can be mapped to physical channels.

[0098] UE 115 and base station 105 can support data retransmission to increase the likelihood of successful data reception. Hybrid Automatic Repeat Request (HARQ) feedback is a technique used to increase the likelihood of correctly receiving data on communication link 125. HARQ may 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 MAC layer throughput in poor radio conditions (e.g., low signal-to-noise ratio conditions). In some examples, the device may support simultaneous time-slot HARQ feedback, where the device can provide HARQ feedback in a specific time slot for data received in previous symbols within that time slot. In other cases, the device may provide HARQ feedback in subsequent time slots or according to a different time interval.

[0099] In some aspects, the UE 115 and base station 105 of the wireless communication system 100 may be configured to support techniques for signaling notifications and / or configuring phase continuity conditions to maintain phase continuity (e.g., phase coherence) over DMRSs that span multiple PUSCH transmissions, multiple time slots, or both. In particular, the UE 115 of the wireless communication system 100 may be configured with multiple phase continuity conditions that define a set of rules for whether (or not) phase continuity is maintained between DMRSs that span multiple PUSCH transmissions and / or multiple time slots in the event that resources allocated for the DMRS are cancelled or revoked.

[0100] For example, UE 115 may receive from base station 105 a resource allocation for transmitting a set of PUSCH transmissions and a set of DMRS with phase continuity across a set including one or more time slots. In this example, UE 115 may be configured to transmit a set of PUSCH transmissions and a set of DMRS with phase continuity across a set including one or more time slots. In this sense, the set of DMRS with phase continuity can be said to span multiple PUSCH transmissions, span multiple time slots, or both. Subsequently, a portion of the allocated resources may be cancelled or revoked. For example, base station 105 may transmit an Uplink Cancellation Information (ULCI) message that cancels or revokes a portion of the allocated resource set. In this example, UE 115 may determine the phase continuity conditions of the remaining, uncancelled resources and transmit PUSCH transmissions and DMRS within the uncancelled resources according to the determined phase continuity conditions. Subsequently, base station 105 may aggregate at least a subset of the received DMRS to perform channel estimation and may demodulate (decode) the PUSCH transmissions based on the channel estimation.

[0101] In some aspects, phase continuity conditions can define rules or sets of conditions that indicate whether (or not) phase continuity is maintained between DMRSs transmitted across multiple PUSCHs and / or multiple time slot bundles when a portion of the allocated resources is cancelled or revoked. Under one phase continuity condition, phase continuity of DMRSs can be maintained across multiple PUSCHs and / or multiple time slots even though resources are cancelled. Under other phase continuity conditions, phase continuity can be maintained across all PUSCHs / time slots if the duration of the cancelled resources is less than a certain time threshold. Under other phase continuity conditions, all resources used for DMRS within a time slot can be cancelled, and UE 115 can transmit multiple sets of DMRSs with different phase continuity before and after the cancelled resources. In some aspects, UE 115 can be pre-configured with one or more phase continuity conditions. In other implementations, the network (e.g., base station 105) can configure (e.g., signal) one or more phase continuity conditions to UE 115 via RRC signaling. In addition, in some cases, UE115 can be configured to indicate support for one or more phase continuity conditions via UE capability message transmission.

[0102] The techniques described herein enable UE 115 to maintain phase continuity across DMRS spanning multiple time-slot bundles. Specifically, in the event that a portion of the resources allocated to DMRS and / or other PUSCH transmissions are revoked or cancelled, the techniques described herein enable UE 115 to maintain a certain level of phase continuity across DMRS spanning multiple PUSCH transmissions and / or multiple time-slot bundles. Therefore, by enabling UE 115 to maintain phase coherence across DMRS spanning multiple transmissions and / or multiple time-slot bundles, the techniques described herein enable wider use of phase-coherent DMRS (e.g., DMRS with phase continuity), which can lead to more accurate channel estimation at base station 105, improve the reliability of wireless communication within wireless communication system 100, and enhance the overall user experience.

[0103] Figure 2 Examples of resource configuration 200 supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure are explained. In some examples, resource configuration 200 may implement aspects of wireless communication system 100 or be implemented by aspects of wireless communication system 100. Resource configuration 200 explains a resource set 205 spanning multiple time slots 210, which can be used for the transmission / reception of phase-coherent DMRS.

[0104] As previously noted herein, some wireless communication systems (e.g., wireless communication system 100) enable wireless devices (e.g., UE 115) to transmit bundled DMRS 220 with phase continuity (e.g., phase-coherent DMRS 220) to improve channel estimation. For example, UE 115 may transmit a bundle of phase-continuous DMRS 220 to base station 105 within a resource set known to both UE 115 and base station 105. In this example, because the phase-continuous DMRS 220 is received by base station 105 within a known resource set, base station 105 may be configured to bundle the phase-continuous DMRS 220 to determine a more accurate channel estimate of the channel between UE 115 and base station 105. Base station 105 can then use the improved channel estimate to demodulate (e.g., decode) other transmissions (e.g., PUSCH transmission 215) received from UE 115 via the channel. In some aspects, PUSCH transmission 215 may also be transmitted with phase continuity across corresponding time slots 210.

[0105] Some wireless communication systems have enabled DMRS 220 to be bundled only within a single TTI, rather than across multiple TTIs. For example, in some wireless communication systems, UE 115 can be configured to transmit a set of DMRS 220 with phase continuity within a first time slot 210-a, but may not be able to maintain phase coherence for DMRS 220 transmitted in different time slots 210. For example, in some wireless communication systems, UE 115 may not be able to maintain phase continuity for DMRS 220 transmitted across the first time slot 210-a and the second time slot 210-b. In this regard, phase continuity for DMRS 220 can be maintained within each respective time slot 210, but not across multiple time slots 210.

[0106] In some other wireless communication systems (e.g., wireless communication system 100), DMRS 220 can be bundled across multiple time slots and / or multiple transmissions (e.g., PUSCH transmissions) to maintain phase continuity across multiple time slots 210 and / or multiple transmissions. For example, in wireless communication system 100, UE 115 can be configured to transmit DMRS 220 in a first time slot 210-a, a second time slot 210-b, and a third time slot 210-c, wherein phase continuity is maintained across each of time slots 210-a, 210-b, and 210-c. In this example, base station 105 may be configured to jointly process (e.g., aggregate) phase-coherent DMRS 220 received across time slots 210-a, 210-b, and 210-c when performing channel estimation (e.g., cross-time slot channel estimation), and to demodulate PUSCH transmissions 215 received across time slots 210-a, 210-b, and 210-c (e.g., PUSCH transmissions 215 with phase continuity) using the determined channel estimation.

[0107] In some aspects, one or more parameters or characteristics can be maintained for the phase-coherent DMRS 220 spanning one or more time slots 210. Parameters that can be used to maintain the phase continuity of the DMRS 220 associated with one or more PUSCH transmissions 215 may include, but are not limited to, phase, frequency allocation, transmission power, spatial transmission relationship, antenna port used for transmission, precoding scheme, etc. For example, such as Figure 2 As explained, when DMRS 220 is clustered across the first time slot 210-a, the second time slot 210-b, and the third time slot 210-c, the frequency allocation and transmission of DMRS 220 within each corresponding time slot 210 can remain the same. Conversely, if DMRS 220 in each time slot 210 exhibits one or more different parameters, phase continuity may not be maintained across time slots 210 and / or other transmissions (e.g., phase discontinuity) (e.g., different phases, different frequency resource allocation within or between PUSCH time slots, discontinuous time resource allocation of PUSCH time slots, different transmit power, different antenna ports, different transmit power, different timing advance).

[0108] In some aspects, the ability to bundle DMRS 220 across multiple time slots 210 (e.g., maintaining phase coherence of DMRS 220 across multiple time slots 210) and / or the ability to bundle DMRS 220 across multiple transmissions (e.g., multiple PUSCH transmissions 215) enables improved channel estimation at the receiver equipment (e.g., base station 105). In particular, by enabling the aggregation of a larger amount of DMRS 220 across multiple time slots 210, base station 105 is able to determine a more comprehensive channel estimate (e.g., cross-time slot channel estimation), which can improve the ability of base station 105 to demodulate the received PUSCH transmissions 215.

[0109] Figure 3 Examples of resource configuration 300 supporting techniques for cross-time-slot channel estimation according to various aspects of this disclosure are explained. In some examples, resource configuration 300 may implement aspects of wireless communication system 100, resource configuration 200, or both, or may be implemented by wireless communication system 100, resource configuration 200, or both.

[0110] As previously noted, DMRS with phase continuity across one or more time slots 310 and / or across one or more PUSCHs can enable receiver equipment to aggregate bundled DMRS and perform more accurate channel estimation, which can improve demodulation of other received transmissions.

[0111] For example, as shown in resource allocation scheme 305-a, a set of DMRSs with phase continuity (e.g., phase-coherent DMRSs) can be transmitted across multiple time slots 310 together with repeated sets of PUSCH transmissions. In other words, the phase continuity of the bundled DMRSs is maintained across the first time slot 310-a, the second time slot 310-b, the third time slot 310-c, and the fourth time slot 310-d. Furthermore, the phase continuity of the bundled DMRSs can be maintained across individual PUSCH repetitions. In this example, the PUSCH transmission in each time slot 310 may include repetitions of the same PUSCH transmission. In other words, each PUSCH transmission explained in resource allocation scheme 305-a may include the same data payload (e.g., the same transport block). Individual PUSCH transmissions can also be transmitted with phase continuity across individual time slots 310. In this example, maintaining phase continuity between DMRS across multiple time slots 310 and / or PUSCH transmission bundles enables the receiver equipment (e.g., base station 105) to perform more accurate channel estimation, which in turn enables the receiver equipment to demodulate (e.g., decode) multiple repetitions of PUSCH transmissions more accurately and efficiently.

[0112] In terms of addition or replacement, a DMRS with phase continuity bundled across multiple time slots can achieve efficient demodulation of different PUSCH transmissions. For example, as shown in resource allocation scheme 305-b, a set of DMRS with phase continuity can be transmitted together with a set of PUSCH transmissions across multiple time slots 310. In other words, the phase continuity of the bundled DMRS is maintained across the first time slot 310-e, the second time slot 310-f, the third time slot 310-g, and the fourth time slot 310-h. Alternatively, the phase continuity of the bundled DMRS is maintained across individual PUSCH transmissions. In this example, the PUSCH transmissions in each time slot 310 may include different PUSCH transmissions (e.g., different data payloads, different transport blocks), which can be scheduled by different scheduling permissions, DCI messages, etc. For example, the PUSCH transmissions in the first time slot 310-e may be different from the PUSCH transmissions in the second time slot 310-f, the third time slot 310-g, the fourth time slot 310-h, or any combination thereof. For example, a first PUSCH transmission in the first time slot 310-a can be scheduled by a first DCI message, while a second PUSCH transmission in the second time slot 310-b can be scheduled by a second DCI message. Therefore, the four PUSCH transmissions within each time slot of each of the various time slots 310 can include different PUSCH transmissions (e.g., different data payloads, different transport blocks) scheduled using different scheduling privileges (e.g., four separate DCI messages scheduling the four PUSCH transmissions respectively). In some cases, PUSCH transmissions can also be transmitted with phase continuity across corresponding time slots 310. In this example, maintaining phase continuity between DMRSs across multiple time slots 310 and / or multiple PUSCH transmission bundles allows the receiver equipment (e.g., base station 105) to perform more accurate channel estimation (e.g., cross-time slot channel estimation), which enables the receiver equipment to more accurately and efficiently demodulate (e.g., decode) the different PUSCH transmissions received in each corresponding time slot 310.

[0113] Figure 4 Examples of wireless communication systems 400 supporting techniques for cross-slot channel estimation according to various aspects of this disclosure are described. In some examples, wireless communication system 400 may implement aspects of wireless communication system 100, resource configuration 200, resource configuration 300, or any combination thereof, or be implemented by aspects of wireless communication system 100, resource configuration 200, resource configuration 300, or any combination thereof. For example, wireless communication system 400 may support one or more phase continuity conditions to maintain phase continuity between DMRSs across multiple time-slot bundles, as referenced... Figure 1-3 As described.

[0114] The wireless communication system 400 may include a base station 105-a and a UE 115-a, which may be as shown in the reference. Figure 1 The example described is base station 105 and UE 115. UE 115-a can communicate with base station 105-a using communication link 405, which can be an example of an NR or LTE link between UE 115-a and base station 105-a. In some cases, communication link 405 between UE 115-a and base station 105-a may include an example of an access link (e.g., a Uu link), which may include a bidirectional link capable of enabling both uplink and downlink communication. For example, UE 115-a can use communication link 405 to transmit uplink signals (such as uplink control signals or uplink data signals) to base station 105-a, and base station 105-a can use communication link 405 to transmit downlink signals (such as downlink control signals or downlink data signals) to UE 115-a.

[0115] In some aspects, the UE 115-a and base station 105-a of the wireless communication system 400 can be configured to support techniques for signaling notifications and / or configuring phase continuity conditions to maintain phase continuity between DMRSs across multiple time slots and / or multiple transmission bundles. Specifically, the UE 115-a of the wireless communication system 400 can be configured (e.g., pre-configured) with multiple phase continuity conditions that define a set of rules or conditions for whether (or not) phase continuity is maintained between DMRSs across multiple time slots and / or multiple PUSCH transmission bundles in the event that resources allocated for DMRS or PUSCH transmissions are cancelled or revoked. By enabling the UE 115-a to maintain a certain level of phase continuity across bundled DMRSs, the base station 105-a may be able to perform channel estimation (e.g., cross-time slot channel estimation) more accurately and efficiently on the communication link 405, thereby increasing the likelihood that additional transmissions (e.g., PUSCH transmissions) between the UE 115-a and the base station 105-a will be successfully received and demodulated.

[0116] For example, such as Figure 4 As shown, UE 115-a can transmit a capability indication 410 (e.g., a UE capability report) to base station 105-a. UE 115-a can transmit the capability indication 410 as part of a random access procedure or attachment procedure performed with base station 105-a. In some aspects, the capability indication 410 can indicate one or more phase continuity conditions supported by UE 115-a. In some aspects, one or more phase continuity conditions can be configured (e.g., pre-configured) at UE 115. In this case, both UE 115-a and base station 105-a can be aware of the phase continuity conditions supported by UE 115-a.

[0117] For example, capability indicator 410 can indicate whether UE 115 supports it. Figure 5 , Figure 6 , Figure 7 The phase continuity condition explained in any combination thereof. For example, regarding... Figure 5-7 In further detail, the phase continuity condition can define rules or sets of conditions that determine whether (or not) phase continuity is maintained between DMRS 460s across multiple time slots and / or across multiple transmission bundles. More specifically, the phase continuity condition can define rules or sets of conditions that determine whether (or not) phase continuity is maintained between DMRS 460s across multiple time slots and / or across multiple other transmission bundles if resources allocated for DMRS 460 or other transmissions (e.g., PUSCH transmission 455) are cancelled or revoked.

[0118] Capability indication 410 may include additional or alternative information associated with the capabilities of UE 115-a, phase continuity conditions supported by UE 115-a, or any combination thereof. For example, as will be referred to herein... Figure 6 Further detailed description, Figure 6 The phase continuity condition explained herein allows UE 115-a to be based on the time duration associated with the cancelled resource (e.g., first resource 445) cancelled by ULCI message 440 (e.g., Figure 6 The comparison between the time duration (645) explained in the diagram and the threshold time interval is used to determine whether the DMRS across the bundle maintains (or does not maintain) phase continuity. In this case, the capability indicator 410 can indicate the threshold time interval associated with the phase continuity condition.

[0119] In some aspects, UE 115-a can receive control messages (e.g., RRC message 415) indicating one or more phase continuity conditions from base station 105-a. For example, UE 115-a can receive RRC message 415, which configures UE 115-a to have one or more phase continuity conditions available to UE 115-a. In some aspects, base station 105-a can transmit RRC message 415 indicating one or more phase continuity conditions based on (e.g., in response to) receiving capability indication 410. If phase continuity conditions are configured (e.g., pre-configured) at UE 115-a, base station 105a can suppress the transmission of RRC message 415 indicating phase continuity conditions.

[0120] In some scenarios, RRC message 415 may indicate to UE 115-a which phase continuity condition to use (e.g., static indication). In additional or alternative scenarios, RRC message 415 may simply configure UE 115-a to have a set of available phase continuity conditions, including one or more phase continuity conditions. In this case, a subsequent control message (e.g., control message 420) may be used to indicate which phase continuity condition from the pre-configured set of phase continuity conditions to use (e.g., dynamic indication). In some aspects, RRC message 415 may indicate one or more parameters associated with one or more phase continuity conditions, including but not limited to threshold time intervals.

[0121] For example, UE 115-a may receive a control message 420 indicating the use of one or more phase continuity conditions from a pre-configured set of phase continuity conditions. For instance, control message 420 may include a downlink control information (DCI) message and / or a MAC-CE message indicating one of the phase continuity conditions configured at UE 115-a via RRC message 415. In this regard, UE 115-a may receive control message 420 based on transmission capability indication 410, receiving RRC message 415, or both. In some aspects, control message 420 may indicate one or more parameters associated with one or more phase continuity conditions, including but not limited to threshold time intervals.

[0122] In some aspects, UE 115-a can receive control signaling 425 from base station 105-a. UE 115-a can receive control signaling 425 based on transmission capability indication 410, receiving RRC message 415, receiving control message 420, or any combination thereof. Control signaling 425 may include RRC messages, DCI messages, etc. In some aspects, such as Figure 4 As shown, control signaling 425 can instruct UE115-a to allocate a set of resources 430 for transmitting (e.g., coherently transmitting) uplink shared channel transmissions (e.g., PUSCH transmission 455) across a set of TTIs (e.g., time slots) and a set of phase-coherent DMRS 460s (e.g., phase-coherent DMRS 460). Thus, control signaling 425 can allocate resource sets for transmitting PUSCH transmission 455 and DMRS 460 across multiple time slots, where DMRS 460 is clustered for phase continuity across multiple time slots. In an additional or alternative manner, PUSCH transmission 455 scheduled by control signaling 425 can also be configured to be transmitted with phase continuity across multiple time slots.

[0123] In some aspects, the resource set 430 allocated by control signaling 425 may include a subset of resources for transmitting uplink shared channel transmissions (e.g., PUSCH transmission 455) and DMRS 460 within each time slot of the time slot set. In this regard, control signaling 425 may schedule a set of phase-continuous PUSCH transmissions 455 and a set of phase-continuous DMRS 460 across multiple time slots. For example, control signaling 425 may allocate a resource set 430 for transmitting a set of PUSCH transmissions 455 and a set of phase-continuous DMRS 460 across a first time slot and a second time slot. In this example, each of the first and second time slots may include a subset of resources allocated for PUSCH transmissions 455 and phase-coherent DMRS 460, such that one or more phase-continuous PUSCH transmissions 455 and one or more phase-continuous DMRS 460 can be transmitted in each of the first and second time slots.

[0124] In some respects, the resource set 430 allocated by control signaling 425 may include resources for multiple repetitions of the same uplink shared channel transmission (e.g., multiple repetitions of the same PUSCH transmission 455), different uplink shared channel transmissions (e.g., different PUSCH transmissions 455), or both.

[0125] Subsequently, UE 115-a can receive a control message (e.g., ULCI message 440) from base station 105-a, which indicates cancellation (e.g., revocation) of a first resource 445 (e.g., a subset of resources) in the resource set 430 allocated via control signaling 425. In some aspects, ULCI message 440 may include a DCI message (e.g., DCI format 2_4). Alternatively or additionally, a cancellation information radio network temporary identifier (CI-RNTI) may be used to transmit ULCI message 440. UE 115-a may receive the ULCI message 440 indicating cancellation of the first resource 445 based on transmission capability indication 410, receiving RRC message 415, receiving control message 420, receiving control signaling 425 for allocating resource set 430, or any combination thereof.

[0126] In some respects, UE 115-a may receive a ULCI message 440 indicating the cancellation of a first resource 445 in resource set 430 within one or more ULCI monitoring times 435. For example, upon receiving control signaling 425 to allocate resource set 430, UE 115-a may be configured to monitor one or more ULCI monitoring times 435 (e.g., first ULCI monitoring time 435-a, second ULCI monitoring time 435-b), and may receive ULCI message 440 within one of the ULCI monitoring times 435 (e.g., second ULCI monitoring time 435-b).

[0127] In some respects, the network (e.g., base station 105-b) can utilize ULCI message 440 to reclaim (e.g., cancel) previously allocated resources, such that the reclaimed resources (e.g., first resource 445) can be allocated for different communications, assigned to different wireless devices, or both. In this regard, the use of ULCI message 440 can improve URLLC within the wireless communication system 400.

[0128] In some aspects, it is possible to cancel the window (T CI Resources can be cancelled within this period. In some aspects, the cancellation window for cancelling resources can be based on the timing of the ULCI monitoring period 435. Specifically, the cancellation window can start from the end of each ULCI monitoring period 435 and last for a duration T. Proc,2 +d. For example, the first cancel window T 1CI The monitoring can begin after the first ULCI monitoring session 435-a ends, at time T. 1Proc,2 +d, and the second cancel window T 2CI The monitoring can begin after the second ULCI monitoring period 435-b ends, at time T. 2Proc,2 +d. In some respects, d can be associated with the capabilities of UE 115-a and can be reported to base station 105-a via capability indication 410. To calculate the values ​​used to identify the cancellation window T... 1CI and T 2CI The beginning of T 1Proc,2 +d and T 2Proc,2 +d can assume a minimum processing capacity of 2 is N2, where the subcarrier spacing (SCS) is the minimum between the SCS configuration of the physical downlink control channel (PDCCH) on the serving cell (e.g., ULCI monitoring timing 435) and the PUSCH and / or probe reference signal (SRS). In some respects, even for UE 115 with capacity 1, a minimum processing time capacity of 2 can be assumed.

[0129] The cancellation window associated with each ULCI monitoring event 435 can indicate the time interval in which resources can be cancelled / revoked via the ULCI message 440 received in each corresponding ULCI monitoring event 435. For example, as Figure 4 As shown, the ULCI message 440 received in the second ULCI monitoring time 435-b can be configured to be sent to the second cancellation window T. 2CI Cancel resources (e.g., first resource 445).

[0130] In some respects, the use of ULCI message 440 can be used to cancel / revoke resources previously allocated for PUSCH transmission 455, reference signals (e.g., SRS, DMRS 460), etc. In some implementations, UE 115-a may be unable to resume transmissions after a set of canceled resources, effectively resulting in the cancellation of additional resources. For example, in some cases where ULCI message 440 cancels the first resource 445, UE 115-a may be unable to resume transmissions after the first resource 445. In this regard, the cancellation of the first resource 445 can effectively result in the cancellation of a subset of resources 450 following the first resource 445. In some cases, PUSCH transmission 455 may support the cancellation of resources (e.g., the first resource 445) without resumption.

[0131] As previously noted, canceling the first resource via ULCI message 440 may affect the ability of UE 115-a to maintain phase continuity of DMRS 460, which is clustered across multiple TTIs (e.g., across multiple time slots), across multiple PUSCH transmissions, or across both. The specific impact of cancellation on the ability of UE 115-a to maintain phase continuity across clustered DMRS 460 may be based on how ULCI message 440 cancels the first resource 445, what the symbols included in the first resource 445 (e.g., symbols for PUSCH transmission 455, symbols for DMRS 460) are allocated for, or both. For example, the behavior of UE 115-a regarding the maintenance (or non-maintenance) of phase coherence of DMRS 460 across the cross-band can be based on whether the first resource 445 canceled by ULCI message 440 does not include any symbols allocated to DMRS 460, including some symbols allocated to DMRS 460 within the time slot, including all symbols allocated to DMRS 460 within the time slot, or any combination thereof.

[0132] Thus, UE 115-a can be configured to maintain (or not maintain) the phase continuity cancelled via DMRS 460 based on one or more phase continuity conditions and cancellation. For example, UE 115-a, base station 105-a, or both can determine one or more phase continuity conditions for the resource set 430 allocated by control signaling 425. Specifically, UE 115-a and / or base station 105-a can determine one or more phase continuity conditions for the portion of resource set 430 allocated by control signaling 425 that has not been cancelled via ULCI message 440.

[0133] In this regard, UE 115-a and / or base station 105-a may determine one or more phase continuity conditions of resource set 430 based on transmit / receive capability indication 410, transmit / receive RRC message 415, transmit / receive control message 420, transmit / receive control signaling 425, transmit / receive ULCI message 440, or any combination thereof. For example, in some cases, UE 115-a may determine that UE 115-a wants to achieve the phase continuity conditions indicated via control message 420 (e.g., DCI message, MAC-CE message).

[0134] In the case of addition or replacement, UE 115-a can determine which phase continuity conditions to use based on determining the type of resource canceled by ULCI message 440 (e.g., the type of symbols within the first resource 445 canceled by ULCI message 440). For example, as Figure 5 As explained, the first phase continuity condition can be satisfied if the first resource 445, canceled by ULCI message 440, does not include any symbols allocated for DMRS 460. Conversely, as Figure 7 As explained, the second phase continuity condition can be satisfied if the first resource 445, canceled by ULCI message 440, includes all symbols allocated to DMRS 460 within a specific time slot. Conversely, as Figure 6 As explained, the third phase continuity condition can be satisfied when the first resource 445, canceled by ULCI message 440, includes a subset of symbols allocated to DMRS 460 within a specific time slot. (Refer to...) Figure 5-7 Examples of phase continuity conditions are described in more detail.

[0135] Subsequently, UE 115-a may transmit (e.g., coherently transmit) at least a subset of the set of uplink shared channel transmissions (e.g., PUSCH transmissions 455) scheduled via control signaling 425 in one or more remaining resources of the resource set 430 allocated via control signaling 425. In this regard, UE 115-a may transmit PUSCH transmissions 455 scheduled by control signaling 425 and not cancelled or revoked by ULCI message 440. Thus, UE 115-a may transmit PUSCH transmissions 455 based on transmission capability indication 410, receiving RRC message 415, receiving control message 420, receiving control signaling 425, receiving ULCI message 440, determining phase continuity conditions, or any combination thereof. For example, UE 115-a may transmit PUSCH transmissions 455 (e.g., at least a subset of the set of PUSCH transmissions 455) based on the determined phase continuity conditions. In some respects, UE 115-a can transmit PUSCH transmissions 455 with phase continuity across one or more time slots.

[0136] Furthermore, UE 115-a can transmit at least a subset of the set of DMRS 460 scheduled via control signaling 425 in one or more remaining resources in the resource set 430 allocated via control signaling 425. In this regard, UE 115-a can transmit DMRS 460 scheduled by control signaling 425 and not cancelled or revoked by ULCI message 440. In this regard, UE 115-a can transmit DMRS 460 based on transmission capability indication 410, receiving RRC message 415, receiving control message 420, receiving control signaling 425, receiving ULCI message 440, determining phase continuity conditions, transmitting PUSCH transmission 455, or any combination thereof. For example, UE 115-a can transmit DMRS 460 (e.g., at least a subset of the set of DMRS 460) based on the determined phase continuity conditions.

[0137] For example, in some cases, UE 115-a can determine that the first phase continuity condition is met or satisfied, such as... Figure 5 As explained. In some cases, UE 115-a can be configured to determine that a first phase continuity condition is met based on the determination that a first resource 445 canceled / revoked by ULCI message 440 does not include any symbols allocated for DMRS 460. In this case, UE 115-a can be configured to transmit DMRS 460 across a set of time slots with common (e.g., identical) phase coherence according to the first phase continuity condition. (Refer to...) Figure 5 The first phase continuity condition is described in more detail.

[0138] As another example, in other cases, UE 115-a can determine that the second phase continuity condition is met or satisfied, such as... Figure 6 As explained. In some cases, UE 115-a can be configured to determine whether a second phase continuity condition is met based on the determination that one or more symbols allocated to DMRS 460 in a given time slot are included in the first resource 445, which is canceled / revoked by ULCI message 440. In this case, UE 115-a can be configured to transmit a first subset of DMRS 460 with first phase coherence and a second subset of DMRS with second phase coherence, which is different from the first phase coherence. For example, UE 115-a can be configured to transmit a first subset of DMRS 460 with first phase coherence in a first set of consecutive time slots before the time slot including the first resource 445, and can transmit a second subset of DMRS 460 with second phase coherence in a second set of consecutive time slots after the time slot including the first resource 445. (Refer to...) Figure 6 The second phase continuity condition is described in more detail.

[0139] As another example, in other cases, UE 115-a can determine that the third phase continuity condition is met or satisfied, such as... Figure 6 As explained. In some cases, UE 115-a can be configured to determine the satisfaction of the third phase continuity condition based on determining that the first resource 445, canceled / revoked by ULCI message 440, includes one or more symbols allocated to DMRS 460 in a given time slot. In this case, UE 115-a can be configured based on time duration (e.g., Figure 6 The comparison between the time duration (645) explained in the diagram and the threshold time interval associated with UE 115-a is used to maintain (or not maintain) phase continuity across the bundled DMRS 460.

[0140] For example, if the time duration between the start of the first resource 445 canceled by ULCI message 440 and the next PUSCH transmission 455 meets a threshold time interval (e.g., T... duration ≤T Thresh If the time duration satisfies a threshold time interval, then UE 115-a can transmit DMRS 460 with the same phase coherence across the time slot set (e.g., across the set of PUSCH transmissions 455). In this regard, if the time duration satisfies a threshold time interval, the third phase continuity condition allows UE 115-a to maintain phase coherence across DMRS 460 transmitted before and after the first resource 445. Conversely, if the time duration between the start of the first resource 445 canceled by ULCI message 440 and the next PUSCH transmission 455 fails to satisfy the threshold time interval (e.g., T...), then UE 115-a can transmit DMRS 460 with the same phase coherence across the time slot set (e.g., across the set of PUSCH transmissions 455). duration >T ThreshIf UE115a can transmit a first subset of DMRS 460 before the first resource 445 and a second subset of DMRS 460 with different phase coherence after the first resource 445, then UE115a can transmit a third subset of DMRS 460 with different phase coherence before and after the first resource 445. In this regard, if the time duration fails to meet the threshold time interval, the third phase continuity condition allows UE115a to transmit DMRS 460 without maintaining phase coherence across the first resource 445. (Refer to...) Figure 6 The third phase continuity condition is described in more detail.

[0141] As another example, in other cases, UE 115-a can determine that the fourth phase continuity condition is met or satisfied, such as... Figure 7 As explained. In some cases, UE 115-a can be configured to determine the satisfaction of a fourth phase continuity condition based on determining all symbols allocated to DMRS 460 in a given time slot by a first resource 445 cancelled / revoked by ULCI message 440. In this case, UE 115-a can be configured to transmit a first subset of DMRS 460 with first phase coherence and a second subset of DMRS 460 with second phase coherence different from the first phase coherence, according to the fourth phase continuity condition. For example, UE 115-a can be configured to transmit a first subset of DMRS 460 with first phase coherence within a first set of consecutive time slots and / or for a first set of consecutive PUSCH transmissions 455 preceding a time slot including the first resource 445, and can transmit a second subset of DMRS 460 with second phase coherence within a second set of consecutive time slots and / or for a second set of consecutive PUSCH transmissions 455 following a time slot including the first resource 445. (Refer to...) Figure 7 The fourth phase continuity condition is described in more detail.

[0142] In some aspects, base station 105a can determine a channel estimate for the wireless communication link (e.g., communication link 405) between UE 115-a and base station 105-a. In some aspects, base station 105-a can determine the channel estimate based on at least a subset of the received DMRS 460. For example, base station 105-a can perform one or more demodulation and / or grouping procedures (e.g., soft grouping) on ​​the set of DMRS 460, and can perform the channel estimate based on the performance of the demodulation and / or grouping procedures. In this regard, base station 105-a can determine the channel estimate based on received PUSCH transmission 455 (e.g., PUSCH transmission 455 with phase continuity), received DMRS 460 with phase coherence, or both.

[0143] In some respects, base station 105-a can demodulate (e.g., decode) uplink shared channel transmissions (e.g., phase-coherent PUSCH transmissions 455) based on the determined channel estimation. Channel estimation based on DMRS 460 enables base station 105-a to more efficiently and accurately account for noise and demodulate PUSCH transmissions 455, thereby improving the reliability of wireless communication between UE 115-a and base station 105-a.

[0144] Subsequently, UE 115-a and base station 105-a can perform wireless communication. In this regard, UE 115-a can exchange uplink signals, downlink signals, or both with base station 105-a. In some aspects, UE 115-a and base station 105-a can communicate with each other based on deterministic channel estimation, demodulated PUSCH transmission 455, or both.

[0145] The techniques described herein enable UE 115-a to maintain phase continuity between DMRS 460 bundles transmitting 455 across multiple time slots and / or multiple PUSCHs. Specifically, the techniques described herein enable UE 115-a to maintain a certain level of phase continuity between DMRS 460 bundles transmitting 455 across multiple time slots and / or PUSCHs when a portion of the resource set 430 allocated to DMRS 460 and / or other transmissions is revoked or cancelled. Therefore, by enabling UE 115-q to maintain phase continuity between DMRS 460 bundles transmitting 455 across multiple time slots, the techniques described herein enable wider use of phase-coherent DMRS 460, which allows for more accurate channel estimation at base station 105-a, improves the reliability of wireless communication within the wireless communication system 400, and enhances the overall user experience.

[0146] Figure 5 Examples of resource configuration 500 supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure are explained. In some examples, resource configuration 500 may be implemented by aspects of wireless communication system 100, resource configuration 200, resource configuration 300, wireless communication system 400, or any combination thereof, or by aspects of wireless communication system 100, resource configuration 200, resource configuration 300, wireless communication system 400, or any combination thereof.

[0147] In some respects, resource configuration 500 describes a first phase continuity condition, which can be configured at UE 115 and / or used by UE 115 to maintain (or not maintain) phase coherence between DMRS 535, which are clustered across multiple time slots 510 and / or multiple PUSCH transmissions 530. Specifically, in cases where resources allocated to PUSCH transmissions 530 are cancelled or revoked, but resources allocated to DMRS 535 are not cancelled or revoked, Figure 5 The first phase continuity condition explained in the paper can be used to maintain a certain level of phase continuity across DMRS 535.

[0148] For example, as previously noted herein, UE 115 may receive control signaling 515 (e.g., DCI message, RRC message) indicating a resource set 520 for communication at UE 115. This resource set 520 may include resources for transmitting uplink transmissions (e.g., PUSCH transmissions 530) and a set of phase-continuous DMRS 535 spanning time slots 510-b, 510-c, 510-d, 510-e, and 510-f. In some aspects, this resource set 520 may include resources for transmitting a set of phase-continuous PUSCH transmissions 530 spanning individual time slots 510. Figure 5 As shown, the resource set 520 may include resources for transmitting one or more PUSCH transmissions 530 and resources for transmitting one or more phase-coherent DMRS 535 within each time slot 510 associated with the resource set 520.

[0149] In some respects, the set of DMRS 535 can be referred to as the set across time slots 510-b, 510-c, 510-d, 510-e, and 510-f having phase continuity. Additionally or alternatively, the set of DMRS 535 can be referred to as the set across PUSCH transmissions 530 having phase continuity. For example, as... Figure 5 As shown, a single time slot 510-b may include multiple PUSCH transmissions 530 (e.g., multiple PUSCH transmissions with phase continuity). In this example, DMRS 535 may be referred to as being clustered for the phase continuity of multiple PUSCH transmissions 530 across time slot 510-b.

[0150] Subsequently, UE 115 may receive a control message (e.g., ULCI 525) instructing the cancellation of the first resource in resource set 520. For example, Figure 5The explained ULCI 525 can cancel or revoke a first resource (e.g., canceled resource 540) in a resource set 520 previously configured / assigned by control signaling 515. In this example, the first resource in the resource set canceled / revoked by ULCI 525 (e.g., canceled resource 540) may include resources allocated for one or more PUSCH transmissions 530, but may not include any resources allocated for DMRS 535. In other words, canceled resource 540 may include one or more symbols (e.g., PUSCH data symbols) allocated for PUSCH transmissions 530, but may not include any symbols (e.g., DMRS symbols) allocated for DMRS 535. In this scenario, UE 115 may not expect ULCI 525 to cancel any symbols allocated to the bundled DMRS 535.

[0151] When a ULCI 525 indicating cancellation of a first resource (e.g., cancelled resource 540) is received, the UE 115 can be configured to determine one or more phase continuity conditions for the uncancelled portion of the resource set 520, and can transmit at least a subset of scheduled PUSCH transmissions 530 and / or at least a subset of DMRS 535 based on (e.g., according to) the determined phase continuity conditions.

[0152] For example, upon receiving ULCI 525, UE 115 can be configured to determine that a first phase continuity condition will apply to the uncancelled portion of resource set 520. UE 115 can be configured to determine the first phase continuity condition based on signaling received from base station 105 (e.g., RRC signaling, DCI message, MAC-CE message). Additionally or alternatively, UE 115 can be configured to determine the first phase continuity condition based on determining that a first resource canceled by ULCI 525 (e.g., canceled resource 540) does not include any resources allocated for DMRS 535.

[0153] In some aspects, the first phase continuity condition enables UE 115 to maintain phase continuity across DMRS 535, which is bundled across time slots 510-b to 510-f and / or PUSCH transmissions 530 within time slots 510-b to 510-f are bundled. In other words, the first phase continuity condition enables UE 115 to maintain phase continuity across DMRS 535 transmitted in time slot 510-d (including the first resource canceled / revoked by ULCI 525 (e.g., canceled resource 540)) and DMCS 535 transmitted in other bundled time slots 510 before and after the first resource.

[0154] For example, based on the first phase continuity condition, UE 115 can transmit with the same phase continuity across time slots 510-b to 510-f (e.g., PUSCH transmission 530 across time slots 510-b to 510-f). Figure 5 Each of the DMRS 535 as explained herein. In particular, UE 115 may transmit across time slots 510-b to 510-f with the same phase continuity (e.g., the same phase coherence) based on the first resource cancelled by ULCI 525 (e.g., cancelled resource 540). Figure 5 Each of the DMRS 535s described herein.

[0155] Figure 6 Examples of resource configuration 600 supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure are described. In some examples, resource configuration 600 may be implemented by aspects of wireless communication system 100, resource configuration 200, resource configuration 300, wireless communication system 400, or any combination thereof, or by aspects of wireless communication system 100, resource configuration 200, resource configuration 300, wireless communication system 400, or any combination thereof.

[0156] In some respects, Resource Configuration 600 explains one or more additional phase continuity conditions that can be configured at UE 115 and / or used by UE 115. Specifically, Figure 6 The phase continuity condition explained herein can be used to maintain a certain level of phase coherence across DMRS 635 if the resources allocated for PUSCH transmission 630 and / or DMRS 635 are cancelled or revoked.

[0157] For example, as previously noted herein, UE 115 may receive control signaling 615 (e.g., DCI message, RRC message) indicating a resource set 620 for communication at UE 115. This resource set 620 may include resources for transmitting a set of uplink transmissions (e.g., PUSCH transmission 630) and a set of DMRS 635 with phase continuity across time slots 610-b, 610-c, 610-d, 610-e, and 610-f. In some aspects, this resource set 620 may include resources for transmitting a set of PUSCH transmissions 630 with phase continuity across individual time slots 610. Figure 6 As shown, the resource set 620 may include resources for transmitting one or more PUSCH transmissions 630 and resources for transmitting one or more phase-coherent DMRS 635 within each time slot 610 associated with the resource set 620.

[0158] In some respects, the set of DMRS 635 can be referred to as the set spanning time slots 610-b, 610-c, 610-d, 610-e, and 610-f with phase continuity. Additionally or alternatively, the set of DMRS 635 can be referred to as the set spanning PUSCH transmission 630 with phase continuity. For example, as... Figure 6 As shown, a single time slot 610-b may include multiple PUSCH transmissions 630 (e.g., multiple PUSCH transmissions with phase continuity). In this example, DMRS 635 may be referred to as being clustered for the phase continuity of multiple PUSCH transmissions 630 across time slot 610-b.

[0159] Subsequently, UE 115 may receive a control message (e.g., ULCI 625) instructing the cancellation of the first resource in resource set 620. For example, Figure 6 The explained ULCI 625 can cancel or revoke a first resource (e.g., canceled resource 640) in a resource set 620 previously configured / assigned by control signaling 615. In this example, the first resource in the resource set canceled / revoked by ULCI 625 (e.g., canceled resource 640) may include resources allocated for one or more PUSCH transmissions 630 and resources allocated for DMRS 635. In other words, canceled resource 640 may include one or more symbols (e.g., PUSCH data symbols) allocated for PUSCH transmissions 630 and one or more symbols (e.g., DMRS symbols) allocated for DMRS 635.

[0160] When a ULCI 625 indicating cancellation of a first resource (e.g., cancelled resource 640) is received, the UE 115 can be configured to determine one or more phase continuity conditions for the uncancelled portion of resource set 620, and can transmit at least a subset of scheduled PUSCH transmissions 630 and / or at least a subset of DMRS 635 based on (e.g., according to) the determined phase continuity conditions.

[0161] For example, upon receiving ULCI 625, UE 115 can be configured to determine whether it applies a second or third phase continuity condition. UE 115 can be configured to determine the second and / or third phase continuity condition based on signaling received from base station 105 (e.g., RRC signaling, DCI message, MAC-CE message). Additionally or alternatively, UE 115 can be configured to determine the second and / or third phase continuity condition based on determining that the first resource canceled by ULCI 625 (e.g., canceled resource 640) includes one or more symbols of the resource set 620 allocated to DMRS 635.

[0162] In some cases, the second phase continuity condition allows UE 115 to maintain phase continuity for DMRS 635 scheduled across time slots 610 that do not include any cancelled resources (e.g., time slot 610 that does not include cancelled resource 640). Specifically, the second phase continuity condition can maintain phase continuity for DMRS 635 across consecutive time slots 610 that do not include any cancelled resources. In other words, the second phase continuity condition may result in a loss of phase continuity for DMRS 635 transmitted within time slot 610-d associated with cancelled resource 640, but phase coherence can be maintained between DMRS 635 transmitted in time slots 610-b and 610-c before cancelled resource 640, and between DMRS 635 transmitted in time slots 610-e and 610-f after cancelled resource 640.

[0163] For example, according to the second phase continuity condition, UE 115 can transmit DMRS 635 in time slots 610-b and 610-c with first phase coherence, and can transmit DMRS 635 in time slots 610-e and 610-f with a second phase coherence different from the first phase coherence. In this example, DMRS 635 transmitted in time slot 610-d associated with the cancelled resource 640 can be transmitted additionally or alternatively with no phase coherence, with a third phase coherence different from the first and second phase coherence, or both. DMRS 635 transmitted in time slot 610-d can be transmitted with either the first or second phase coherence.

[0164] In terms of addition or replacement, UE 115 may determine whether to transmit PUSCH transmission 630 and / or DMRS 635 within the uncancelled portion of resource set 620 according to a third phase continuity condition. In some aspects, the third phase continuity condition may cause UE 115 to maintain (or not maintain) the phase continuity of DMRS 635 scheduled before and after the cancelled resource 640 based on a time duration 645 associated with the cancelled resource 640. Specifically, the third phase continuity may be based on a time duration 645 and a threshold time interval (T) associated with and / or configured at UE 115. Thresh The comparison is used to maintain (or not maintain) the phase continuity of DMRS 635 scheduled before and after the cancelled resource 640.

[0165] In some respects, time duration 645 can define the time duration between the start of the first resource canceled by ULCI 625 (e.g., the start of canceled resource 640) and the next PUSCH transmission 630 and / or DMRS 635 scheduled by control signaling 615. For example, as Figure 6 As shown, the time duration 645 from the start of the cancelled resource 640 to the next PUSCH transmission 630 scheduled in time slot 610-e can be measured. In some aspects, a threshold time interval (T) is to be compared with the time duration 645. Thresh The threshold time interval may include the number of symbol periods (e.g., the number of symbols). For example, the threshold time interval may include two symbols. In some aspects, the threshold time interval may be associated with the processing capabilities of UE 115, which may be indicated to base station 105 via UE capability signaling. Additionally or alternatively, the threshold time interval may be configured at UE 115 (e.g., pre-configured), indicated to UE 115 via signaling from the network, selectively adjusted by UE 115 based on network conditions (e.g., signaling overhead, traffic), or any combination thereof.

[0166] In some respects, the threshold time interval can indicate the duration (e.g., the maximum duration) during which UE 115 can maintain the phase continuity of DMRS 635. Specifically, the threshold time interval can indicate the duration during which UE 115 can maintain the phase continuity of DMRS 635 in the absence of other transmissions performed by UE 115. If UE 115 is not scheduled to perform a transmission (e.g., PUSCH transmission 630) within a duration 645 longer than the threshold time interval, it may not be able to maintain the phase continuity of DMRS 635 transmitted before and after the duration 645. Conversely, if UE 115 is not scheduled to perform a transmission (e.g., PUSCH transmission 630) within a duration 645 shorter than or equal to the threshold time interval, it may be able to maintain the phase continuity of DMRS 635 transmitted before and after the duration 645.

[0167] In this respect, according to the third phase continuity condition, UE 115 can be configured to maintain (or not maintain) the phase continuity of DMRS 635 transmitted before and after the cancelled resource 640 based on a comparison of time duration 645 and a threshold time interval associated with UE 115.

[0168] For example, in some cases, UE 115 can determine that a time duration of 645 meets a threshold time interval. In some implementations, this threshold time interval is defined as 645 being less than or equal to T. Duration ≤T Thresh If the threshold is met, the time duration is 645 (T). Duration It can satisfy the threshold time interval (T) ThreshIn this example, and based on the third phase continuity condition, UE 115 can transmit DMRS 635 with the same phase coherence across all time slots 610-a to 610-f (e.g., all PUSCH transmissions 630 across time slots 610-a to 610-f) based on the time duration 645 satisfying the threshold time interval.

[0169] In the replacement scenario, UE 115 can determine that the time duration of 645 failed to meet the threshold time interval. In some implementations, this is done when the time duration of 645 is greater than the threshold time interval (e.g., if T...). Duration >T Thresh If the threshold is not met, the time duration is 645 (T). Duration It may have failed to meet the threshold time interval (T) Thresh In this example, and according to the third phase continuity condition, UE 115 can transmit a first subset of DMRS 635 with first phase coherence, and can transmit a second subset of DMRS 635 with a second phase coherence different from the first phase coherence. For example, UE 115 can transmit the first subset of DMRS 635 with first phase coherence in time slots 610-b and 610-c (and / or together with PUSCH transmission 630) before the cancelled resource 640, and can transmit the second subset of DMRS 635 with a second phase coherence different from the first phase coherence in time slots 610-e and 610-f (and / or together with PUSCH transmission 630) after the cancelled resource 640. In this example, the DMRS 635 transmitted in time slot 610-d associated with the cancelled resource 640 may be transmitted additionally or alternatively with a third phase coherence different from the first and second phase coherences, without any phase coherence. The DMRS 635 transmitted in time slot 610-d may be transmitted with one of the first or second phase coherences.

[0170] Figure 7 Examples of resource configuration 700 supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure are described. In some examples, resource configuration 700 may implement aspects of wireless communication system 100, resource configuration 200, resource configuration 300, wireless communication system 400, or any combination thereof, or be implemented by aspects of wireless communication system 100, resource configuration 200, resource configuration 300, wireless communication system 400, or any combination thereof.

[0171] In some respects, resource configuration 700 explains the fourth phase continuity condition that can be configured at UE 115 and / or used by UE 115. Specifically, Figure 7The fourth phase continuity condition explained herein can be used to maintain a certain level of phase coherence across DMRS 735 if the resources allocated for PUSCH transmission 730 and / or DMRS 735 are cancelled or revoked.

[0172] For example, as previously noted herein, UE 115 may receive control signaling 715 (e.g., DCI message, RRC message) indicating a resource set 720 for communication at UE 115. This resource set 720 may include resources for transmitting sets of uplink transmissions (e.g., PUSCH transmissions 730) and sets of DMRS 735 with phase continuity across time slots 710-b, 710-c, 710-d, 710-e, and 710-f and / or sets of PUSCH transmissions 730. In some aspects, this resource set 720 may include resources for transmitting sets of PUSCH transmissions 730 with phase continuity across individual time slots 710. Figure 7 As shown, the resource set 720 may include resources for transmitting one or more PUSCH transmissions 730 and resources for transmitting one or more phase-coherent DMRS 735 within each time slot 710 associated with the resource set 720.

[0173] In some respects, the set of DMRS 735 can be referred to as the set across time slots 710-b, 710-c, 710-d, 710-e, and 710-f having phase continuity. Additionally or alternatively, the set of DMRS 735 can be referred to as the set across PUSCH transmissions 730 having phase continuity. For example, as... Figure 7 As shown, a single time slot 710-b may include multiple PUSCH transmissions 730 (e.g., multiple PUSCH transmissions 730 with phase continuity). In this example, DMRS 735 may be referred to as being clustered for the phase continuity of multiple PUSCH transmissions 730 across time slot 710-b.

[0174] Subsequently, UE 115 may receive a control message (e.g., ULCI 725) instructing the cancellation of the first resource in resource set 720. For example, Figure 7The explained ULCI 725 can cancel or revoke a first resource (e.g., canceled resource 740) in a resource set 720 previously configured / assigned by control signaling 715. In this example, the first resource in the resource set canceled / revoked by ULCI 725 (e.g., canceled resource 740) may include resources allocated for one or more PUSCH transmissions 730 and resources allocated for DMRS 735. In other words, canceled resource 740 may include one or more symbols (e.g., PUSCH data symbols) allocated for PUSCH transmissions 730 and one or more symbols (e.g., DMRS symbols) allocated for DMRS 735.

[0175] For example, such as Figure 7 As shown, the first resource canceled by ULCI 725 (e.g., canceled resource 740) may include each symbol allocated to DMRS 735 within time slot 710-d, each symbol allocated to PUSCH transmission 730 within time slot 710-d, or both.

[0176] When a ULCI 725 indicating cancellation of a first resource (e.g., cancelled resource 740) is received, the UE 115 can be configured to determine one or more phase continuity conditions for the uncancelled portion of the resource set 720, and can transmit at least a subset of scheduled PUSCH transmissions 730 and / or at least a subset of DMRS 735 based on (e.g., according to) the determined phase continuity conditions.

[0177] For example, upon receiving ULCI 725, UE 115 can be configured to determine that it wants to apply a fourth phase continuity condition. UE 115 can be configured to determine the fourth phase continuity condition based on signaling received from base station 105 (e.g., RRC signaling, DCI message, MAC-CE message). Additionally or alternatively, UE 115 can be configured to determine the fourth phase continuity condition based on the determination that the first resource canceled by ULCI 725 (e.g., canceled resource 740) includes each symbol allocated to DMRS 735 within time slot 710-d.

[0178] In some cases, the fourth phase continuity condition allows UE 115 to maintain phase coherence across DMRS 735 within consecutive time slots 710, which do not include cancelled resources allocated for DMRS 735. In other words, the fourth phase continuity condition may cause UE 115 to maintain phase continuity of DMRS 735 transmitted in time slots 710-b and 710-c before time slot 710-d, which includes cancelled resource 740, and to maintain phase continuity of DMRS 735 transmitted in time slots 710-e and 710-f after time slot 710-d, which includes cancelled resource 740.

[0179] For example, UE 115 can receive ULCI 725 and determine that ULCI 725 cancels all symbols allocated to DMRS 735 in time slot 610-d. In this example, and according to the fourth phase continuity condition, UE 115 can transmit a first subset of DMRS 735 with first phase coherence, and can transmit a second subset of DMRS 735 with a second phase coherence different from the first phase coherence. For example, UE 115 can transmit the first subset of DMRS 735 with first phase coherence in time slots 710-b and 710-c before the canceled resource 740, and can transmit the second subset of DMRS 735 with a second phase coherence different from the first phase coherence in time slots 710-e and 710-f after the canceled resource 740. In other words, the fourth phase continuity condition allows UE 115 to maintain phase continuity in slot 710 before and after the cancelled resource 740, but not in slots before and after the cancelled resource 740.

[0180] Figure 8 Examples of process flow 800 supporting techniques for cross-time-slot channel estimation according to various aspects of this disclosure are described. In some examples, process flow 800 may be implemented by aspects of wireless communication system 100, resource configuration 200, resource configuration 300, wireless communication system 400, resource configurations 500-700 or any combination thereof, or by aspects of wireless communication system 100, resource configuration 200, resource configuration 300, wireless communication system 400, resource configurations 500-700 or any combination thereof. For example, process flow 800 may describe UE 115-b: receiving control signaling to allocate a resource set for uplink shared channel transmission and phase-coherent DMRS across symbol sets, receiving a control message indicating cancellation of a first resource in the resource set, and transmitting at least a subset of uplink shared channel transmission and phase-coherent DMRS according to one or more phase continuity conditions, as referenced. Figure 1-7 As described.

[0181] In some cases, process flow 800 may include UE 115-b and base station 105-b, which may be examples of corresponding devices as described herein. For example, Figure 8 The UE 115-b and base station 105-b described herein can be Figure 2 Examples of UE115-a and base station 105-a explained in the document.

[0182] In some examples, the operations described in process flow 800 may be performed by hardware (e.g., including circuit systems, processing blocks, logic components, and other components), code executed by a processor (e.g., software or firmware), or any combination thereof. Alternative examples are possible, some of which may be performed in a different order than described or not at all. In some cases, the steps may include additional features not mentioned below, or further steps may be added.

[0183] In step 805, UE 115-b may transmit a capability indication (e.g., a UE capability report) to base station 105-b. UE 115-b may transmit the capability indication as part of a random access procedure or attachment procedure performed with base station 105-b. In some aspects, the capability indication may indicate one or more phase continuity conditions supported by UE 115-b.

[0184] For example, a capability indicator can indicate whether UE 115 supports... Figure 5 , Figure 6 , Figure 7 Phase continuity conditions, or any combination thereof, may be defined. In some aspects, each phase continuity condition may define a set of rules or conditions that define whether (or not) phase continuity is maintained between DMRSs spanning multiple time slot bundles and / or multiple PUSCH transmission bundles. More specifically, each phase continuity condition may define a set of rules or conditions that define whether (or not) phase continuity is maintained between DMRSs spanning multiple time slots and / or PUSCH transmission bundles in the event that resources allocated for DMRS or PUSCH transmissions are cancelled or revoked.

[0185] Capability indications may include additional or alternative information associated with the capabilities of UE 115-b, the phase continuity conditions supported by UE 115-b, or any combination thereof. For example, as previously mentioned herein, Figure 6 The phase continuity condition explained herein can be based on a comparison of the time duration 645 associated with the cancelled resource 640 cancelled by ULCI 625 and a threshold time interval. In this case, the capability indicator can indicate the threshold time interval associated with the third phase continuity condition.

[0186] At 810, UE 115-b may receive a control message from base station 105-b indicating one or more phase continuity conditions. In this regard, the control message may configure UE 115-b with one or more phase continuity conditions that UE 115-b may use. In some cases, the control message may include an RRC message. In some aspects, base station 105-b may transmit the control message indicating one or more phase continuity conditions based on (e.g., in response to) receiving a capability indication at 805.

[0187] In some scenarios, the control message may instruct UE 115-b which phase continuity condition to use (e.g., a static indication). In additional or alternative scenarios, the control message may simply configure UE 115-b to have a set of available phase continuity conditions, including one or more phase continuity conditions. In this case, subsequent control signaling (e.g., a control message, in 815) may be used to indicate which phase continuity condition from the pre-configured set of phase continuity conditions to use (e.g., a dynamic indication). In some aspects, the control message may indicate one or more parameters associated with one or more phase continuity conditions, including but not limited to threshold time intervals.

[0188] At 815, UE 115-b may receive a control message indicating the use of a phase continuity condition from a pre-configured set of phase continuity conditions. For example, the control message at 815 may include a DCI message and / or a MAC-CE message indicating one of the phase continuity conditions configured at UE 115-b via a control message (e.g., an RRC message) at 810. In this regard, UE 115-b may receive the control message at 815 based on transmitting a capability indication at 805, receiving the control message at 810, or both. In some aspects, the control message received at 815 may indicate one or more parameters associated with one or more phase continuity conditions, including but not limited to threshold time intervals.

[0189] At 820, UE 115-b can receive control signaling from base station 105-b. UE 115-b can receive control signaling at 820 based on a transmission capability indication at 805, receiving a control message at 810, receiving a control message at 815, or any combination thereof. In some aspects, the control signaling can indicate the resource sets available for UE 115-b to transmit uplink shared channel transmissions (e.g., PUSCH transmissions) and cross-TTI (e.g., time slot) sets, cross-PUSCH transmission sets, or DMRS sets with phase continuity of both (e.g., phase-coherent DMRS). Thus, the control signaling can allocate resource sets for transmitting PUSCH transmissions and DMRS across multiple time slots, where DMRS are clustered for phase continuity across multiple time slots and / or across multiple PUSCH transmissions.

[0190] In some aspects, the set of resources allocated by the control signaling at 820 may include a subset of resources for transmitting uplink shared channel transmissions (e.g., PUSCH transmissions) and DMRS within each time slot in the set of time slots. In this regard, the control signaling may schedule a set of PUSCH transmissions and a set of phase-continuous DMRSs across multiple time slots. For example, the control signaling at 820 may allocate a set of resources for coherently transmitting a set of PUSCH transmissions and a set of phase-continuous DMRSs across a first time slot and a second time slot. In this example, each of the first and second time slots may include a subset of resources allocated for PUSCH transmissions and phase-coherent DMRSs, such that one or more PUSCH transmissions and one or more phase-coherent DMRSs can be transmitted in each of the first and second time slots. In some aspects, the control signaling may schedule PUSCH transmissions such that PUSCH transmissions will be transmitted phase-continuously across multiple time slots.

[0191] In some aspects, the set of resources allocated by control signaling may include resources for multiple repetitions (e.g., multiple PUSCH repetitions) of the same uplink shared channel transmission, different uplink shared channel transmissions (e.g., different PUSCH transmissions), or both. For example, a first PUSCH transmission scheduled in a first time slot may be scheduled via a first DCI message, and a second PUSCH transmission scheduled in a second time slot may be scheduled via a second DCI message. In some aspects, different PUSCH transmissions may be scheduled via different scheduling permissions (e.g., different DCI messages). For example, a first PUSCH transmission may be scheduled via a first DCI message, and a second PUSCH transmission may be scheduled via second DCI information different from the first DCI information.

[0192] At 825, UE 115-b may receive a control message from base station 105-b indicating cancellation (e.g., revocation) of a first resource (e.g., a subset of resources) in the resource set allocated via control signaling at 815. In some cases, the control message indicating cancellation may include a ULCI message. UE 115-b may receive the control message indicating cancellation at 825 based on transmitting a capability indication at 805, receiving a control message at 810, receiving a control message at 815, receiving control signaling for allocating a resource set at 820, or any combination thereof.

[0193] As previously noted, cancelling the first resource at 825 via a control message (e.g., a ULCI message) may affect the UE 115-b's ability to maintain phase continuity of the DMRS across multiple TTI bundles (e.g., across multiple time slot bundles), across multiple PUSCH transport bundles, or both. The specific impact of this cancellation on the UE 115-b's ability to maintain phase continuity of the DMRS across bundles can be based on how the ULCI message cancels the first resource, what the symbols included within the first resource are allocated for (e.g., PUSCH transport, DMRS), or both. For example, the UE 115-b's behavior regarding maintaining (or not maintaining) phase continuity of the DMRS across bundles can be based on whether the first resource canceled by the ULCI message does not include any symbols allocated for the DMRS, includes some symbols allocated for the DMRS within a time slot, includes all symbols allocated for the DMRS within a time slot, or any combination thereof.

[0194] Thus, UE 115-b can be configured to maintain (or not maintain) the phase continuity of bundled DMRS cancellation based on one or more phase continuity conditions and on the basis of cancellation. This can be described in more detail with respect to operation 820 of process flow 800.

[0195] At 830, UE 115-b, base station 105-b, or both may determine one or more phase continuity conditions for a set of resources allocated by control signaling. Specifically, UE 115-b and / or base station 105-b may determine one or more phase continuity conditions for a portion of the resource set allocated by control signaling at 820 and not canceled via control message at 815.

[0196] In this regard, UE 115-b and / or base station 105-b may determine the phase continuity conditions for a resource set at 830 based on the following: transmit / receive capability indication at 805; transmit / receive control messages at 810; transmit / receive control messages at 815; transmit / receive control signaling at 820; transmit / receive control messages (e.g., ULCI messages) at 825; or any combination thereof. For example, in some cases, UE 115-b may determine that UE 115-b wants to achieve the phase continuity conditions indicated by the control message (e.g., DCI message, MAC-CE message) at 815.

[0197] In cases of addition or replacement, UE 115-b can determine which phase continuity conditions to use based on the type of resource canceled by the ULCI message (e.g., the type of symbols within the first resource canceled by the ULCI message). For example, in the case where the first resource canceled by the ULCI message does not contain any symbols allocated for DMRS, UE 115-b can determine that it should apply the first phase continuity condition, such as... Figure 5 As explained. Conversely, in cases where the first resource canceled by the ULCI message includes all symbols allocated for the DMRS within a specific time slot, UE 115-b can determine that it must apply the fourth phase continuity condition, such as Figure 7 As explained. In contrast, in cases where the first resource canceled by the ULCI message includes a subset of symbols allocated to the DMRS within a specific time slot, UE 115-b can determine whether it applies the second or third phase continuity condition, such as Figure 6 What is being explained.

[0198] At 835, UE 115-b may transmit (e.g., coherently transmit) at least a subset of the set of uplink shared channel transmissions (e.g., PUSCH transmissions) scheduled via control signaling in one or more remaining resources in the resource set allocated via control signaling. In this regard, UE 115-b may transmit PUSCH transmissions scheduled by control signaling at 820 and not canceled or revoked by a control message (e.g., ULCI message) at 825. In this regard, UE 115-b may transmit uplink shared channel transmissions at 835 based on transmitting a capability indication at 805; receiving a control message at 810; receiving a control message at 815; receiving control signaling at 820; receiving a control message (e.g., ULCI message) at 825; determining a phase continuity condition at 830; or any combination thereof. For example, UE 115-b can transmit a PUSCH transmission at 835 based on a phase continuity condition determined at 830 (e.g., at least a subset of the PUSCH transmission set). In some aspects, UE 115-b can transmit at least a subset of PUSCH transmissions with phase continuity across a set of time slots.

[0199] At 840, UE 115-b may transmit at least a subset of the DMRS set scheduled via control signaling in one or more remaining resources in the resource set allocated via control signaling. In this regard, UE 115-b may transmit DMRS scheduled by control signaling at 820 and not cancelled or revoked by a control message (e.g., ULCI message) at 825. In this regard, UE 115-b may transmit DMRS at 835 based on transmitting a capability indication at 805; receiving a control message at 810; receiving a control message at 815; receiving control signaling at 820; receiving a control message (e.g., ULCI message) at 825; determining a phase continuity condition at 830; transmitting an uplink shared channel transmission at 835, or any combination thereof. For example, UE 115-b may transmit DMRS (e.g., at least a subset of the DMRS set) at 835 based on the phase continuity condition determined at 830.

[0200] For example, in some cases, UE 115-b can determine that it needs to apply the first phase continuity condition (such as...). Figure 5 (As explained). In some cases, UE 115-b can be configured to determine the first phase continuity condition to apply based on the determination that the first resource canceled / revoked by the ULCI message does not include any symbols allocated for DMRS. In this case, UE 115-b can be configured to transmit DMRS at 840 with common (e.g., same) phase coherence across the time slot set according to the first phase continuity condition.

[0201] As another example, in other cases, UE 115-b can determine that it needs to apply the second phase continuity condition (such as...). Figure 6 (As explained). In some cases, UE 115-b can be configured to determine the second phase continuity condition to apply based on the determination that a first resource canceled / revoked by the ULCI message includes one or more symbols allocated to the DMRS in a given time slot. In this case, UE 115-b can be configured to transmit a first subset of DMRSs with first phase coherence and a second subset of DMRSs with second phase coherence, which is different from the first phase coherence. For example, UE 115-b can be configured to transmit a first subset of DMRSs with first phase coherence in a first set of consecutive time slots preceding the time slot containing the canceled resource, and can transmit a second subset of DMRSs with second phase coherence in a second set of consecutive time slots following the time slot containing the canceled resource.

[0202] As another example, in other cases, UE 115-b can determine that it needs to apply the third phase continuity condition (such as...). Figure 6 (As explained). In some cases, UE 115-b can be configured to determine the third phase continuity condition to apply based on the determination that the first resource canceled / revoked by the ULCI message includes one or more symbols allocated to the DMRS in a given time slot. In this case, UE 115-b can be configured based on time duration (e.g., Figure 6 The comparison between the time duration (645) explained in the text and the threshold time interval associated with UE 115-b is used to maintain (or not maintain) phase continuity across the bundled DMRS.

[0203] For example, if the time duration between the start of the first resource canceled by the ULCI message and the next PUSCH transmission meets a threshold time interval (e.g., T... duration ≤T Thresh If the time duration satisfies a threshold time interval, then UE 115-b can transmit DMRS across the time slot set with the same phase coherence (e.g., the same phase continuity). In this regard, if the time duration satisfies a threshold time interval, the third phase continuity condition allows UE 115-b to maintain phase coherence across DMRS transmitted before and after the cancelled resource. Conversely, if the time duration between the start of the first resource cancelled by the ULCI message and the next PUSCH transmission does not satisfy the threshold time interval (e.g., T...), then UE 115-b can transmit DMRS with the same phase coherence (e.g., the same phase continuity). duration >T ThreshIf the time duration fails to meet the threshold time interval, the third phase continuity condition allows UE 115-b to transmit a first subset of DMRS before the cancelled resource and a second subset of DMRS with different phase coherence after the cancelled resource.

[0204] As another example, in other cases, UE 115-b can determine that it needs to apply the fourth phase continuity condition (such as...). Figure 7 (As explained). In some cases, UE 115-b can be configured to determine the fourth phase continuity condition to apply based on the determination that a first resource canceled / revoked by the ULCI message includes all symbols allocated to the DMRS in a given time slot. In this case, UE 115-b can be configured to transmit a first subset of DMRS with first phase coherence and a second subset of DMRS with second phase coherence, different from the first phase coherence, according to the fourth phase continuity condition. For example, UE 115-b can be configured to transmit a first subset of DMRS with first phase coherence in a first set of consecutive time slots preceding the time slot containing the canceled resource, and can transmit a second subset of DMRS with second phase coherence in a second set of consecutive time slots following the time slot containing the canceled resource.

[0205] At 845, base station 105-b can determine the channel estimate of the wireless communication link between UE 115-b and base station 105-b. In some aspects, base station 105-b can determine the channel estimate based on at least a portion of the DMRS received at 840. For example, base station 105-b can perform one or more demodulation and / or grouping procedures (e.g., soft grouping) on ​​the DMRS set at 840, and can perform the channel estimate based on the execution of the demodulation and / or grouping procedures. In this regard, base station 105-b can determine the channel estimate based on receiving uplink shared channel transmissions (e.g., PUSCH transmissions with phase continuity) at 835, receiving DMRSs with phase coherence at 840, or both.

[0206] At 850, base station 105-b can demodulate (e.g., decode) the uplink shared channel transmission (e.g., PUSCH transmission) received at 835. In some aspects, base station 105-b can demodulate the uplink shared channel transmission at 850 based on the channel estimation determined at 845. DMRS-based channel estimation enables base station 105-b to more efficiently and accurately account for noise and demodulate the uplink shared channel transmission, thereby improving the reliability of wireless communication between UE 115-b and base station 105-b.

[0207] At 855, UE 115-b and base station 105-b can perform wireless communication. In this regard, UE 115-b can exchange uplink signals, downlink signals, or both with base station 105-b. In some aspects, UE 115-b and base station 105-b can communicate with each other at 855 based on determining a channel estimate at 845, demodulating uplink shared channel transmission at 850, or both.

[0208] The techniques described herein enable UE 115 to maintain phase continuity across DMRS spanning multiple time slots and / or multiple PUSCH transmission bundles. Specifically, in the event that a portion of the resources allocated to DMRS and / or PUSCH transmissions are revoked or cancelled, the techniques described herein enable UE 115-b to maintain a certain level of phase continuity across DMRS spanning multiple time slots and / or multiple PUSCH transmission bundles. Therefore, by enabling UE 115-b to maintain phase continuity across DMRS spanning multiple time slots and / or multiple transmission bundles, the techniques described herein enable wider use of phase-coherent DMRS, which allows for more accurate channel estimation at base station 105, improves the reliability of wireless communication within the wireless communication system, and enhances the overall user experience.

[0209] Figure 9 A block diagram 900 of an apparatus 905 supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure is shown. Apparatus 905 may be an example of various aspects of UE 115 as described herein. Apparatus 905 may include a receiver 910, a transmitter 915, and a communications manager 920. Apparatus 905 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0210] Receiver 910 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to techniques for cross-timeslot channel estimation). The information may be transmitted to other components of device 905. Receiver 910 may utilize a single antenna or a collection of multiple antennas.

[0211] Transmitter 915 may provide means for transmitting signals generated by other components of device 905. For example, transmitter 915 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to techniques for cross-timeslot channel estimation), user data, control information, or any combination thereof. In some examples, transmitter 915 may be co-located with receiver 910 in a transceiver module. Transmitter 915 may utilize a single antenna or a collection of multiple antennas.

[0212] The communication manager 920, receiver 910, transmitter 915, or various combinations thereof, or various components thereof, may be examples of means for performing various aspects of the techniques for cross-timeslot channel estimation as described herein. For example, the communication manager 920, receiver 910, transmitter 915, or various combinations thereof, or components thereof, may support methods for performing one or more functions described herein.

[0213] In some examples, the communication manager 920, receiver 910, transmitter 915, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuitry system). This hardware may include a processor, digital signal processor (DSP), application-specific integrated circuit (ASIC), field-programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, configured to serve as or otherwise support means for performing the functions described herein. In some examples, the processor and memory coupled to the processor may be configured to perform one or more functions described herein (e.g., by executing instructions stored in memory by the processor).

[0214] Additionally or alternatively, in some examples, the communication manager 920, receiver 910, transmitter 915, or various combinations or components thereof may be implemented by code executed by a processor (e.g., as communication management software or firmware). If implemented by code executed by a processor, the functionality of the communication manager 920, receiver 910, transmitter 915, or various combinations or components thereof may be performed by a general-purpose processor, DSP, central processing unit (CPU), ASIC, FPGA, or any combination of these or other programmable logic devices (e.g., means configured or otherwise supported for performing the functions described in this disclosure).

[0215] In some examples, the communication manager 920 may be configured to use or otherwise cooperate with the receiver 910, transmitter 915, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, the communication manager 920 may receive information from the receiver 910, send information to the transmitter 915, or be integrated with the receiver 910, transmitter 915, or both to receive information, transmit information, or perform various other operations described herein.

[0216] By including or configuring a communication manager 920 according to the examples described herein, device 905 (e.g., a processor that controls or otherwise couples to receiver 910, transmitter 915, communication manager 920, or combinations thereof) can support techniques for maintaining phase coherence among DMRSs across multiple time-slot bundles. In particular, the techniques described herein enable UE 115 to maintain a certain level of phase coherence among DMRSs across multiple time-slot bundles in the event that a portion of the resources allocated to DMRSs and / or other transmissions is revoked or cancelled. Therefore, by enabling UE 115 to maintain phase coherence among DMRSs across multiple time-slot bundles, the techniques described herein enable wider use of phase-coherent DMRSs, which can lead to more accurate channel estimation at base station 105, improved reliability of wireless communication within a wireless communication system, and enhanced overall user experience.

[0217] Figure 10 A block diagram 1000 of an apparatus 1005 supporting techniques for cross-timeslot channel estimation according to aspects of this disclosure is shown. Apparatus 1005 may be an example of aspects of apparatus 905 or UE 115 as described herein. Apparatus 1005 may include a receiver 1010, a transmitter 1015, and a communication manager 1020. Apparatus 1005 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0218] Receiver 1010 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to techniques for cross-timeslot channel estimation). The information may be transmitted to other components of device 1005. Receiver 1010 may utilize a single antenna or a collection of multiple antennas.

[0219] Transmitter 1015 may provide means for transmitting signals generated by other components of device 1005. For example, transmitter 1015 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to techniques for cross-timeslot channel estimation), user data, control information, or any combination thereof. In some examples, transmitter 1015 may be co-located with receiver 1010 in a transceiver module. Transmitter 1015 may utilize a single antenna or a collection of multiple antennas.

[0220] Device 1005 or its various components may be examples of means for performing various aspects of techniques for cross-timeslot channel estimation as described herein. For example, communication manager 1020 may include or any combination thereof. Communication manager 1020 may be examples of various aspects of communication manager 920 as described herein. In some examples, communication manager 1020 or its various components may be configured to use or otherwise cooperate with receiver 1010, transmitter 1015, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, communication manager 1020 may receive information from receiver 1010, send information to transmitter 1015, or be integrated in combination with receiver 1010, transmitter 1015, or both to receive information, transmit information, or perform various other operations described herein.

[0221] Figure 11 A block diagram 1100 is shown of a communication manager 1120 supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure. The communication manager 1120 may be an example of aspects of the communication manager 920, communication manager 1020, or both described herein. The communication manager 1120 or its various components may be examples of means for performing various aspects of the techniques for cross-timeslot channel estimation as described herein. For example, the communication manager 1120 may include or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0222] Figure 12 A diagram of a system 1200 including device 1205 supporting techniques for cross-timeslot channel estimation is shown according to aspects of this disclosure. Device 1205 may be an example of device 905, device 1005, or UE 115 as described herein, or a component including such devices. Device 1205 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. Device 1205 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, including a communication manager 1220, an input / output (I / O) controller 1210, a transceiver 1215, an antenna 1225, a memory 1230, a code 1235, and a processor 1240. These components may be in electronic communication or otherwise coupled (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 1245).

[0223] I / O controller 1210 manages the input and output signals of device 1205. I / O controller 1210 can also manage peripheral devices not integrated into device 1205. In some cases, I / O controller 1210 may represent a physical connection or port to an external peripheral device. In some cases, I / O controller 1210 may utilize an operating system, such as... Or another known operating system. Additionally or alternatively, the I / O controller 1210 may represent or interact with a modem, keyboard, mouse, touchscreen, or similar device. In some cases, the I / O controller 1210 may be implemented as part of a processor (such as processor 1240). In some cases, a user may interact with device 1210 via I / O controller 1205 or via hardware components controlled by I / O controller 1210.

[0224] In some cases, device 1205 may include a single antenna 1225. However, in other cases, device 1205 may have more than one antenna 1225, which may be capable of transmitting or receiving multiple wireless transmissions concurrently. Transceiver 1215 may communicate bidirectionally via one or more antennas 1225, wired or wireless links, as described herein. For example, transceiver 1215 may represent a wireless transceiver and be capable of bidirectional communication with another wireless transceiver. Transceiver 1215 may also include a modem for modulating packets and providing modulated packets to one or more antennas 1225 for transmission, and for demodulating packets received from one or more antennas 1225. Transceiver 1215, or transceiver 1215 and one or more antennas 1225, may be an example of transmitter 915, transmitter 1015, receiver 910, receiver 1010, or any combination thereof or components thereof as described herein.

[0225] Memory 1230 may include random access memory (RAM) and read-only memory (ROM). Memory 1230 may store computer-readable, computer-executable code 1235, including instructions that, when executed by processor 1240, cause device 1205 to perform the various functions described herein. Code 1235 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 1235 may not be directly executable by processor 1240, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, memory 1230 may, in particular, include a basic I / O system (BIOS) that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0226] Processor 1240 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1240 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1240. Processor 1240 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1230) to cause device 1205 to perform various functions (e.g., various functions or tasks supporting techniques for cross-timeslot channel estimation). For example, device 1205 or components thereof may include processor 1240 and memory 1230 coupled to processor 1240, wherein processor 1240 and memory 1230 are configured to perform the various functions described herein.

[0227] By including or configuring a communication manager 1220 according to an example as described herein, device 1205 can support techniques for maintaining phase coherence among DMRSs across multiple time-slot bundles. Specifically, in the event that a portion of the resources allocated to DMRSs and / or other transmissions is revoked or cancelled, the techniques described herein enable UE 115 to maintain a certain level of phase coherence among DMRSs across multiple time-slot bundles. Therefore, by enabling UE 115 to maintain phase coherence among DMRSs across multiple time-slot bundles, the techniques described herein enable wider use of phase-coherent DMRSs, which can lead to more accurate channel estimation at base station 105, improved reliability of wireless communication within the wireless communication system, and enhanced overall user experience.

[0228] In some examples, the communication manager 1220 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using transceiver 1215, one or more antennas 1225, or any combination thereof, or otherwise in cooperation with transceiver 1215, one or more antennas 1225, or any combination thereof. Although the communication manager 1220 is described as a separate component, in some examples, one or more functions described with reference to the communication manager 1220 may be supported or performed by processor 1240, memory 1230, code 1235, or any combination thereof. For example, code 1235 may include instructions that can be executed by processor 1240 to cause device 1205 to perform various aspects of the techniques for cross-timeslot channel estimation as described herein, or processor 1240 and memory 1230 may be otherwise configured to perform or support such operations.

[0229] Figure 13A block diagram 1300 of an apparatus 1305 supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure is shown. Apparatus 1305 may be an example of various aspects of base station 105 as described herein. Apparatus 1305 may include a receiver 1310, a transmitter 1315, and a communication manager 1320. Apparatus 1305 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0230] Receiver 1310 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to techniques for cross-timeslot channel estimation). The information may be transmitted to other components of device 1305. Receiver 1310 may utilize a single antenna or a collection of antennas.

[0231] Transmitter 1315 may provide means for transmitting signals generated by other components of device 1305. For example, transmitter 1315 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to techniques for cross-timeslot channel estimation), user data, control information, or any combination thereof. In some examples, transmitter 1315 may be co-located with receiver 1310 in a transceiver module. Transmitter 1315 may utilize a single antenna or a collection of multiple antennas.

[0232] The communication manager 1320, receiver 1310, transmitter 1315, or various combinations thereof, or various components thereof, may be examples of means for performing various aspects of the techniques for cross-timeslot channel estimation as described herein. For example, the communication manager 1320, receiver 1310, transmitter 1315, or various combinations thereof, or components thereof, may support methods for performing one or more of the functions described herein.

[0233] In some examples, the communication manager 1320, receiver 1310, transmitter 1315, or various combinations or components thereof may be implemented in hardware (e.g., in a communication management circuitry system). The hardware may include processors, DSPs, ASICs, FPGAs, or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination thereof, configured or otherwise supported for performing the functions described herein. In some examples, the processor and memory coupled to the processor may be configured to perform one or more functions described herein (e.g., by executing instructions stored in memory by the processor).

[0234] Additionally or alternatively, in some examples, the communication manager 1320, receiver 1310, transmitter 1315, or various combinations or components thereof, may be implemented by processor-executable code (e.g., as communication management software or firmware). If implemented by processor-executable code, the functionality of the communication manager 1320, receiver 1310, transmitter 1315, or various combinations or components thereof may be performed by a general-purpose processor, DSP, CPU, ASIC, FPGA, or any combination of these or other programmable logic devices (e.g., means configured or otherwise supported for performing the functions described in this disclosure).

[0235] In some examples, the communication manager 1320 may be configured to use or otherwise cooperate with the receiver 1310, transmitter 1315, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, the communication manager 1320 may receive information from the receiver 1310, send information to the transmitter 1315, or be integrated with the receiver 1310, transmitter 1315, or both to receive information, transmit information, or perform various other operations described herein.

[0236] Communication manager 1320 may support wireless communication at the UE according to the examples disclosed herein. For example, communication manager 1320 may be configured or otherwise supported to support means for receiving control signaling from a base station, the control signaling indicating for transmitting a set of multiple uplink shared channel transmissions and a set of multiple DMRSs having phase continuity across a set of multiple TTIs. Communication manager 1320 may be configured or otherwise supported to support means for receiving from the base station a control message indicating cancellation of a first resource among the set of multiple resources. Communication manager 1320 may be configured or otherwise supported to support means for determining one or more phase continuity conditions for the set of multiple resources based on receiving the control message indicating cancellation of the first resource. Communication manager 1320 may be configured or otherwise supported to support means for transmitting at least a subset of the set of multiple uplink shared channel transmissions and at least a subset of the set of multiple DMRSs in one or more remaining resources among the set of multiple resources, according to the one or more phase continuity conditions.

[0237] Additionally or alternatively, the communication manager 1320 may support wireless communication at a base station according to the examples disclosed herein. For example, the communication manager 1320 may be configured or otherwise support means for transmitting control signaling to the UE, the control signaling indicating for transmitting a set of multiple uplink shared channel transmissions and a set of multiple DMRSs having phase continuity across a set of multiple TTIs. The communication manager 1320 may be configured or otherwise support means for transmitting to the UE a control message indicating cancellation of a first resource among the multiple resources. The communication manager 1320 may be configured or otherwise support means for determining one or more phase continuity conditions for the multiple resources based on the transmission of the control message indicating cancellation of the first resource. The communication manager 1320 may be configured or otherwise support means for receiving at least a subset of the multiple uplink shared channel transmissions and at least a subset of the multiple DMRSs in one or more remaining resources among the multiple resources, according to the one or more phase continuity conditions.

[0238] By including or configuring a communication manager 1320 according to an example as described herein, device 1305 (e.g., a processor that controls or is otherwise coupled to receiver 1310, transmitter 1315, communication manager 1320, or a combination thereof) can support techniques for maintaining phase coherence among DMRSs across multiple time-slot bundles. In particular, the techniques described herein enable UE 115 to maintain a certain level of phase coherence among DMRSs across multiple time-slot bundles in the event that a portion of the resources allocated to DMRSs and / or other transmissions is revoked or cancelled. Therefore, by enabling UE 115 to maintain phase coherence among DMRSs across multiple time-slot bundles, the techniques described herein enable wider use of phase-coherent DMRSs, which can lead to more accurate channel estimation at base station 105, improved reliability of wireless communication within a wireless communication system, and an improved overall user experience.

[0239] Figure 14 A block diagram 1400 of an apparatus 1405 supporting techniques for cross-timeslot channel estimation according to aspects of this disclosure is shown. Apparatus 1405 may be an example of aspects of apparatus 1305 or base station 105 as described herein. Apparatus 1405 may include a receiver 1410, a transmitter 1415, and a communication manager 1420. Apparatus 1405 may also include a processor. Each of these components may be in communication with each other (e.g., via one or more buses).

[0240] Receiver 1410 may provide means for receiving information, such as packets, user data, control information, or any combination thereof, associated with various information channels (e.g., control channels, data channels, information channels related to techniques for cross-timeslot channel estimation). The information may be transmitted to other components of device 1405. Receiver 1410 may utilize a single antenna or a collection of multiple antennas.

[0241] Transmitter 1415 may provide means for transmitting signals generated by other components of device 1405. For example, transmitter 1415 may transmit information such as packets associated with various information channels (e.g., control channels, data channels, information channels related to techniques for cross-timeslot channel estimation), user data, control information, or any combination thereof. In some examples, transmitter 1415 may be co-located with receiver 1410 in a transceiver module. Transmitter 1415 may utilize a single antenna or a collection of multiple antennas.

[0242] Device 1405 or its various components may be examples of means for performing various aspects of techniques for cross-timeslot channel estimation as described herein. For example, communication manager 1420 may include control signaling receive manager 1425, phase continuity manager 1430, uplink transmission manager 1435, control signaling transmission manager 1440, uplink receive manager 1445, or any combination thereof. Communication manager 1420 may be examples of various aspects of communication manager 1320 as described herein. In some examples, communication manager 1420 or its various components may be configured to use or otherwise cooperate with receiver 1410, transmitter 1415, or both to perform various operations (e.g., receiving, monitoring, transmitting). For example, communication manager 1420 may receive information from receiver 1410, send information to transmitter 1415, or be integrated with receiver 1410, transmitter 1415, or both to receive information, transmit information, or perform various other operations described herein.

[0243] Communication manager 1420 may support wireless communication at the UE according to the examples disclosed herein. Control signaling receive manager 1425 may be configured or otherwise supported to receive control signaling from a base station, the control signaling indicating a set of resources for transmitting a set of multiple uplink shared channel transmissions and a set of multiple DMRSs having phase continuity across a set of multiple TTIs. Control signaling receive manager 1425 may be configured or otherwise supported to receive from the base station a control message indicating cancellation of a first resource in the set of multiple resources. Phase continuity manager 1430 may be configured or otherwise supported to determine one or more phase continuity conditions for the set of multiple resources based on receiving the control message indicating cancellation of the first resource. Uplink transmission manager 1435 may be configured or otherwise supported to transmit at least a subset of the set of multiple uplink shared channel transmissions and at least a subset of the set of multiple DMRSs in one or more remaining resources in the set of multiple resources, according to the one or more phase continuity conditions.

[0244] Additionally or alternatively, the communication manager 1420 may support wireless communication at a base station according to the examples disclosed herein. The control signaling transmission manager 1440 may be configured or otherwise supported to transmit control signaling to the UE, the control signaling indicating a set of multiple uplink shared channel transmissions and a set of multiple DMRSs having phase continuity across a set of multiple TTIs. The control signaling transmission manager 1440 may be configured or otherwise supported to transmit to the UE a control message indicating cancellation of a first resource among the multiple resources. The phase continuity manager 1430 may be configured or otherwise supported to determine one or more phase continuity conditions for the multiple resources based on the transmission of the control message indicating cancellation of the first resource. The uplink receiving manager 1445 may be configured or otherwise supported to receive at least a subset of the multiple uplink shared channel transmissions and at least a subset of the multiple DMRSs in one or more remaining resources among the multiple resources, according to the one or more phase continuity conditions.

[0245] Figure 15A block diagram 1500 is shown of a communication manager 1520 supporting techniques for cross-timeslot channel estimation according to various aspects of this disclosure. The communication manager 1520 may be an example of the communication manager 1320, communication manager 1420, or aspects thereof described herein. The communication manager 1520 or its various components may be examples of means for performing various aspects of the techniques for cross-timeslot channel estimation as described herein. For example, the communication manager 1520 may include a control signaling receive manager 1525, a phase continuity manager 1530, an uplink transmission manager 1535, a control signaling transmission manager 1540, an uplink receive manager 1545, a UE capability transmission manager 1550, a UE capability receive manager 1555, a channel estimation manager 1560, a demodulation manager 1565, or any combination thereof. Each of these components may communicate directly or indirectly with each other (e.g., via one or more buses).

[0246] Communication manager 1520 may support wireless communication at the UE according to the examples disclosed herein. Control signaling receive manager 1525 may be configured or otherwise supported to receive control signaling from a base station instructing for the transmission of a plurality of uplink shared channel transmissions and a plurality of DMRSs having phase continuity across a plurality of TTIs. In some examples, control signaling receive manager 1525 may be configured or otherwise supported to receive from the base station a control message instructing the cancellation of a first resource in the plurality of resources. Phase continuity manager 1530 may be configured or otherwise supported to determine one or more phase continuity conditions for the plurality of resources based on the received control message instructing the cancellation of the first resource. Uplink transmission manager 1535 may be configured or otherwise supported to transmit at least a subset of the plurality of uplink shared channel transmissions and at least a subset of the plurality of DMRSs in one or more remaining resources in the plurality of resources, according to the one or more phase continuity conditions.

[0247] In some examples, the uplink transmission manager 1535 may be configured or otherwise supported to transmit a subset of the set of multiple DMRSs having phase continuity across the set of multiple TTIs, based on a time interval between the start of the first resource and the next uplink shared channel transmission in the set of multiple uplink shared channel transmissions satisfying a threshold time interval. In some examples, the threshold time interval includes the number of symbol periods.

[0248] In some examples, to support transmission, the uplink transmission manager 1535 may be configured or otherwise supported for transmitting a first subset of the multiple DMRSs having a first phase coherence, and a second subset of the multiple DMRSs having a second phase coherence, based on a time interval between the start of the first resource and the next uplink shared channel transmission in the multiple uplink shared channel transmissions that does not meet a threshold time interval.

[0249] In some examples, a first subset of the set of multiple DMRSs is transmitted before the first resource. In other examples, a second subset of the set of multiple DMRSs is transmitted after the first resource.

[0250] In some examples, to support transmission, the uplink transmission manager 1535 may be configured or otherwise supported for transmitting a first subset of the set of DMRSs having a first phase coherence, and a second subset of the set of DMRSs having a second phase coherence, based on the first resource including one or more symbols allocated to one of the set of DMRSs.

[0251] In some examples, the one or more symbols assigned to the set of multiple DMRSs include all symbols assigned to the set of multiple DMRSs within the TTI of the set of multiple TTIs.

[0252] In some examples, to support transmission, the uplink transmission manager 1535 can be configured or otherwise supported for means of transmitting a subset of the set of multiple DMRSs with phase coherence across the set of multiple TTIs based on the first resource excluding any symbols allocated for the set of multiple DMRSs.

[0253] In some examples, the UE capability transmission manager 1550 may be configured or otherwise supported to transmit to the base station an indication of one or more phase continuity conditions supported by the UE, wherein receiving the control message, determining the one or more phase continuity conditions, or both are based on transmitting the indication of one or more phase continuity conditions supported by the UE.

[0254] In some examples, for each of the multiple TTIs in the set of multiple resources, the set of multiple resources includes a first subset of resources allocated for the multiple uplink shared channel transmissions and a second subset of resources allocated for the multiple DMRSs.

[0255] In some examples, the set of multiple uplink shared channel transmissions includes a set of multiple repetitions of the same uplink shared channel transmission. In some examples, the set of multiple uplink shared channel transmissions includes a first uplink shared channel transmission and a second uplink shared channel transmission different from the first uplink shared channel transmission. In some examples, the set of multiple TTIs includes a set of multiple time slots. In some examples, the control message indicating cancellation includes a ULCI message.

[0256] Additionally or alternatively, the communication manager 1520 may support wireless communication at a base station according to the examples disclosed herein. The control signaling transmission manager 1540 may be configured or otherwise supported to transmit control signaling to the UE, the control signaling indicating a set of multiple uplink shared channel transmissions and a set of multiple DMRSs having phase continuity across a set of multiple TTIs. In some examples, the control signaling transmission manager 1540 may be configured or otherwise supported to transmit to the UE a control message indicating cancellation of a first resource in the set of multiple resources. In some examples, the phase continuity manager 1530 may be configured or otherwise supported to determine one or more phase continuity conditions for the set of multiple resources based on the transmission of the control message indicating cancellation of the first resource. The uplink receiving manager 1545 may be configured or otherwise supported to receive at least a subset of the set of multiple uplink shared channel transmissions and at least a subset of the set of multiple DMRSs in one or more remaining resources in the set of multiple resources, according to the one or more phase continuity conditions.

[0257] In some examples, the uplink receive manager 1545 may be configured or otherwise supported to receive a subset of the set of multiple DMRSs having phase continuity across the set of multiple TTIs, based on a time interval between the start of the first resource and the next uplink shared channel transmission in the set of multiple uplink shared channel transmissions satisfying a threshold time interval. In some examples, the threshold time interval includes the number of symbol periods.

[0258] In some examples, to support reception, the uplink receive manager 1545 may be configured or otherwise supported for receiving a first subset of the multiple DMRS having a first phase coherence, and a second subset of the multiple DMRS having a second phase coherence, based on a time interval between the start of the first resource and the next uplink shared channel transmission in the multiple uplink shared channel transmissions that does not meet a threshold time interval.

[0259] In some examples, a first subset of the set of multiple DMRSs is received before the first resource. In other examples, a second subset of the set of multiple DMRSs is received after the first resource.

[0260] In some examples, to support reception, the uplink receive manager 1545 may be configured or otherwise supported for receiving a first subset of the set of DMRSs having a first phase coherence, and a second subset of the set of DMRSs having a second phase coherence, based on the first resource including one or more symbols assigned to one of the set of DMRSs.

[0261] In some examples, the one or more symbols assigned to the set of multiple DMRSs include all symbols assigned to the set of multiple DMRSs within the TTI of the set of multiple TTIs.

[0262] In some examples, to support reception, the uplink receive manager 1545 may be configured or otherwise supported for receiving a subset of the set of multiple DMRSs with phase coherence across the set of multiple TTIs based on the first resource not including any symbols allocated for the set of multiple DMRSs.

[0263] In some examples, the UE capability reception manager 1555 may be configured or otherwise supported to provide means for receiving an indication from the UE of one or more phase continuity conditions supported by the UE, wherein the transmission of the control message, the determination of the one or more phase continuity conditions, or both are based on receiving the indication of one or more phase continuity conditions supported by the UE.

[0264] In some examples, for each of the multiple TTIs in the set of multiple resources, the set of multiple resources includes a first subset of resources allocated for the multiple uplink shared channel transmissions and a second subset of resources allocated for the multiple DMRSs.

[0265] In some examples, the set of multiple uplink shared channel transmissions includes a set of multiple repetitions of the same uplink shared channel transmission. In some examples, the set of multiple uplink shared channel transmissions includes a first uplink shared channel transmission and a second uplink shared channel transmission that is different from the first uplink shared channel transmission.

[0266] In some examples, the channel estimation manager 1560 may be configured or otherwise supported to provide means for determining a channel estimate based on a subset of the aggregated set of multiple DMRSs. In some examples, the demodulation manager 1565 may be configured or otherwise supported to provide means for demodulating a subset of the aggregated set of multiple uplink shared channel transmissions based on the channel estimate.

[0267] Figure 16 A diagram of a system 1600 including device 1605 supporting techniques for cross-timeslot channel estimation is shown according to aspects of this disclosure. Device 1605 may be an example of device 1305, device 1405, or base station 105 as described herein, or a component including such devices. Device 1605 may wirelessly communicate with one or more base stations 105, UE 115, or any combination thereof. Device 1605 may include components for bidirectional voice and data communication, including components for transmitting and receiving communications, such as a communication manager 1620, a network communication manager 1610, a transceiver 1615, an antenna 1625, a memory 1630, code 1635, a processor 1640, and an inter-station communication manager 1645. These components may be in electronic communication or otherwise coupled (e.g., operational ground, communication ground, functional ground, electronic ground, electrical ground) via one or more buses (e.g., bus 1650).

[0268] The network communication manager 1610 can manage communication with the core network 130 (e.g., via one or more wired backhaul links). For example, the network communication manager 1610 can manage the delivery of data communication to client devices (such as one or more UEs 115).

[0269] In some cases, device 1605 may include a single antenna 1625. However, in other cases, device 1605 may have more than one antenna 1625, which may be capable of transmitting or receiving multiple wireless transmissions concurrently. Transceiver 1615 may communicate bidirectionally via one or more antennas 1625, wired or wireless links, as described herein. For example, transceiver 1615 may represent a wireless transceiver and be capable of bidirectional communication with another wireless transceiver. Transceiver 1615 may also include a modem for modulating packets and providing modulated packets to one or more antennas 1625 for transmission, and for demodulating packets received from one or more antennas 1625. Transceiver 1615, or transceiver 1615 and one or more antennas 1625, may be an example of transmitter 1315, transmitter 1415, receiver 1310, receiver 1410, or any combination thereof or components thereof as described herein.

[0270] Memory 1630 may include RAM and ROM. Memory 1630 may store computer-readable, computer-executable code 1635, including instructions that, when executed by processor 1640, cause device 1605 to perform the various functions described herein. Code 1635 may be stored in a non-transitory computer-readable medium, such as system memory or other types of memory. In some cases, code 1635 may not be directly executable by processor 1640, but may cause a computer (e.g., when compiled and executed) to perform the functions described herein. In some cases, memory 1630 may, in particular, include a BIOS that controls basic hardware or software operations, such as interaction with peripheral components or devices.

[0271] Processor 1640 may include intelligent hardware devices (e.g., general-purpose processors, DSPs, CPUs, microcontrollers, ASICs, FPGAs, programmable logic devices, discrete gate or transistor logic components, discrete hardware components, or any combination thereof). In some cases, processor 1640 may be configured to use a memory controller to operate a memory array. In other cases, the memory controller may be integrated into processor 1640. Processor 1640 may be configured to execute computer-readable instructions stored in memory (e.g., memory 1630) to cause device 1605 to perform various functions (e.g., various functions or tasks supporting techniques for cross-timeslot channel estimation). For example, device 1605 or components of device 1605 may include processor 1640 and memory 1630 coupled to processor 1640, wherein processor 1640 and memory 1630 are configured to perform the various functions described herein.

[0272] Inter-site communication manager 1645 manages communication with other base stations 105 and may include a controller or scheduler for cooperating with other base stations 105 to control communication with UE 115. For example, inter-site communication manager 1645 may coordinate the scheduling of transmissions to UE 115 for various interference mitigation techniques, such as beamforming or joint transmission. In some examples, inter-site communication manager 1645 may provide an X2 interface within LTE / LTE-A wireless communication network technology to facilitate communication between base stations 105.

[0273] Communication manager 1620 may support wireless communication at the UE according to the examples disclosed herein. For example, communication manager 1620 may be configured or otherwise supported to support means for receiving control signaling from a base station, the control signaling indicating for transmitting a set of multiple uplink shared channel transmissions and a set of multiple DMRSs having phase continuity across a set of multiple TTIs. Communication manager 1620 may be configured or otherwise supported to support means for receiving from the base station a control message indicating cancellation of a first resource among the set of multiple resources. Communication manager 1620 may be configured or otherwise supported to support means for determining one or more phase continuity conditions for the set of multiple resources based on receiving the control message indicating cancellation of the first resource. Communication manager 1620 may be configured or otherwise supported to support means for transmitting at least a subset of the set of multiple uplink shared channel transmissions and at least a subset of the set of multiple DMRSs in one or more remaining resources among the set of multiple resources, according to the one or more phase continuity conditions.

[0274] Additionally or alternatively, the communication manager 1620 may support wireless communication at a base station according to the examples disclosed herein. For example, the communication manager 1620 may be configured or otherwise support means for transmitting control signaling to the UE, the control signaling indicating a set of multiple uplink shared channel transmissions and a set of multiple DMRSs having phase continuity across a set of multiple TTIs. The communication manager 1620 may be configured or otherwise support means for transmitting to the UE a control message indicating cancellation of a first resource among the multiple resources. The communication manager 1620 may be configured or otherwise support means for determining one or more phase continuity conditions for the multiple resources based on the transmission of the control message indicating cancellation of the first resource. The communication manager 1620 may be configured or otherwise support means for receiving at least a subset of the multiple uplink shared channel transmissions and at least a subset of the multiple DMRSs in one or more remaining resources among the multiple resources, according to the one or more phase continuity conditions.

[0275] By including or configuring a communication manager 1620 according to an example as described herein, device 1605 can support techniques for maintaining phase coherence among DMRSs across multiple time-slot bundles. Specifically, in the event that a portion of the resources allocated to DMRSs and / or other transmissions is revoked or cancelled, the techniques described herein enable UE 115 to maintain a certain level of phase coherence among DMRSs across multiple time-slot bundles. Therefore, by enabling UE 115 to maintain phase coherence among DMRSs across multiple time-slot bundles, the techniques described herein enable wider use of phase-coherent DMRSs, which can lead to more accurate channel estimation at base station 105, improved reliability of wireless communication within the wireless communication system, and enhanced overall user experience.

[0276] In some examples, the communication manager 1620 may be configured to perform various operations (e.g., receiving, monitoring, transmitting) using or otherwise cooperating with the transceiver 1615, one or more antennas 1625, or any combination thereof. Although the communication manager 1620 is described as a separate component, in some examples, one or more functions described with reference to the communication manager 1620 may be supported or performed by the processor 1640, memory 1630, code 1635, or any combination thereof. For example, code 1635 may include instructions that can be executed by the processor 1640 to cause the device 1605 to perform various aspects of the techniques for cross-timeslot channel estimation as described herein, or the processor 1640 and memory 1630 may be otherwise configured to perform or support such operations.

[0277] Figure 17 A flowchart illustrating a method 1700 for cross-timeslot channel estimation, according to various aspects of this disclosure, is shown. Operation of method 1700 can be implemented by a base station or its components as described herein. For example, operation of method 1700 can be implemented by, as referred to... Figures 1 to 8 and Figures 13 to 16 The described base station 105 performs this function. In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the described function. Alternatively or additionally, the base station may use dedicated hardware to perform aspects of the described function.

[0278] In 1705, the method may include receiving control signaling from a base station, the control signaling indicating a set of multiple uplink shared channel transmissions and a set of multiple DMRSs having phase continuity across a set of multiple TTIs. Operation of 1705 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1705 may be provided by reference to... Figure 15The control signaling receiver 1525 described herein is used to perform this action.

[0279] In 1710, the method may include receiving from the base station a control message indicating cancellation of a first resource in a set of multiple resources. Operation of 1710 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1710 may be provided by reference to... Figure 15 The control signaling receiver 1525 described herein is used to perform this action.

[0280] In 1715, the method may include determining one or more phase continuity conditions for the set of multiple resources based on receiving the control message indicating cancellation of the first resource. Operation of 1715 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1715 may be determined by reference to... Figure 15 The phase continuity manager 1530 described is used to perform this.

[0281] In 1720, the method may include transmitting at least a subset of the set of multiple uplink shared channel transmissions and at least a subset of the set of multiple DMRSs in one or more remaining resources of the set of multiple resources, according to the one or more phase continuity conditions. Operation of 1720 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1720 may be provided by reference to... Figure 15 The described uplink transport manager 1535 is used to perform this.

[0282] Figure 18 A flowchart illustrating a method 1800 for cross-timeslot channel estimation, according to various aspects of this disclosure, is shown. Operation of method 1800 can be implemented by a base station or its components as described herein. For example, operation of method 1800 can be implemented by, as referred to... Figures 1 to 8 and Figures 13 to 16 The described base station 105 performs this function. In some examples, the base station may execute a set of instructions to control the functional elements of the base station to perform the described function. Alternatively or additionally, the base station may use dedicated hardware to perform aspects of the described function.

[0283] At 1805, the method may include transmitting control signaling to the UE, the control signaling indicating a set of resources for transmitting a set of multiple uplink shared channel transmissions and a set of multiple demodulation reference signals having phase continuity across a set of multiple transmission time intervals. Operation of 1805 may be performed according to the examples disclosed herein. In some examples, aspects of the operation of 1805 may be provided by reference to... Figure 15 The control signaling transmission manager 1525 described herein is used to perform this action.

[0284] At 1810, the method may include transmitting to the UE a control message instructing the cancellation of a first resource in the set of multiple resources. Operation of 1810 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1810 may be provided by reference to... Figure 15 The control signaling transmission manager 1525 described herein is used to perform this action.

[0285] In 1815, the method may include determining one or more phase continuity conditions for the set of multiple resources based on the control message indicating cancellation of the first resource. Operation of 1815 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1815 may be determined as described in reference to... Figure 15 The phase continuity manager 1530 described is used to perform this.

[0286] In 1820, the method may include receiving at least a subset of the set of multiple uplink shared channel transmissions and at least a subset of the set of multiple demodulation reference signals in one or more remaining resources of the set of multiple resources, according to the one or more phase continuity conditions. Operation of 1820 may be performed according to the examples disclosed herein. In some examples, aspects of operation of 1820 may be determined by reference to... Figure 15 The described uplink receive manager 1535 is used to perform this.

[0287] The following provides an overview of the various aspects of this disclosure:

[0288] Aspect 1: A method for performing wireless communication at a UE, comprising: receiving control signaling from a base station, the control signaling indicating multiple resources for transmitting multiple uplink shared channel transmissions and multiple DMRS having phase continuity across multiple TTIs; receiving from the base station a control message indicating cancellation of a first resource among the multiple resources; determining one or more phase continuity conditions for the multiple resources based at least in part on receiving the control message indicating cancellation of the first resource; and transmitting at least a subset of the multiple uplink shared channel transmissions and at least a subset of the multiple DMRSs in one or more remaining resources among the multiple resources according to the one or more phase continuity conditions.

[0289] Aspect 2: The method of aspect 1 further includes: transmitting the subset of the plurality of DMRSs having phase continuity across the plurality of TTIs based at least in part on a time duration between the start of the first resource and the next uplink shared channel transmission in the plurality of uplink shared channel transmissions satisfying a threshold time interval.

[0290] Aspect 3: The method of aspect 2, wherein the threshold time interval includes the number of symbol periods.

[0291] Aspect 4: The method of any one of Aspects 2 to 3 further includes: receiving an indication of the threshold time interval from the base station.

[0292] Aspect 5: The method of any one of Aspects 2 to 4 further includes: transmitting an indication of the threshold time interval to the base station.

[0293] Aspect 6: The method of any one of Aspects 1 to 5, wherein the transmission further comprises: transmitting a first subset of the plurality of DMRS having a first phase coherence, and a second subset of the plurality of DMRS having a second phase coherence, based at least in part on a time interval between the start of the first resource and the next uplink shared channel transmission in the plurality of uplink shared channel transmissions not satisfying a threshold time interval.

[0294] Aspect 7: The method of aspect 6, wherein the first subset of the plurality of DMRSs is transmitted before the first resource, and the second subset of the plurality of DMRSs is transmitted after the first resource.

[0295] Aspect 8: The method of any one of Aspects 1 to 7, wherein the transmission further comprises: transmitting, at least in part, a first subset of the plurality of DMRS having a first phase coherence, and a second subset of the plurality of DMRS having a second phase coherence, based on the first resource comprising one or more symbols allocated to one of the plurality of DMRS.

[0296] Aspect 9: The method of aspect 8, wherein the one or more symbols allocated for the plurality of DMRSs include all symbols allocated for the plurality of DMRSs within the TTIs of the plurality of TTIs.

[0297] Aspect 10: The method of any one of Aspects 1 to 9, wherein the transmission further comprises: transmitting, at least in part, a subset of the plurality of DMRSs having phase coherence across the plurality of TTIs based on the fact that the first resource does not include any symbols allocated for the plurality of DMRSs.

[0298] Aspect 11: The method of any one of Aspects 1 to 10 further includes: transmitting to the base station an indication of one or more phase continuity conditions supported by the UE, wherein receiving the control message, determining the one or more phase continuity conditions, or both are based at least in part on transmitting the indication of one or more phase continuity conditions supported by the UE.

[0299] Aspect 12: The method of any one of Aspects 1 to 11, wherein for each of the plurality of TTIs, the plurality of resources includes a first subset of resources allocated for the plurality of uplink shared channel transmissions and a second subset of resources allocated for the plurality of DMRSs.

[0300] Aspect 13: The method of any one of Aspects 1 to 12, wherein the plurality of uplink shared channel transmissions include multiple repetitions of the same uplink shared channel transmission.

[0301] Aspect 14: The method of any one of Aspects 1 to 13, wherein the plurality of uplink shared channel transmissions includes a first uplink shared channel transmission and a second uplink shared channel transmission different from the first uplink shared channel transmission.

[0302] Aspect 15: The method of any one of Aspects 1 to 14, wherein the plurality of TTIs includes a plurality of time slots.

[0303] Aspect 16: The method of any one of Aspects 1 to 15, wherein the control message indicating the cancellation includes an uplink cancellation indication message.

[0304] Aspect 17: A method for wireless communication at a base station, comprising: transmitting control signaling to a UE, the control signaling indicating multiple resources for transmitting multiple uplink shared channel transmissions and multiple DMRS having phase continuity across multiple TTIs; transmitting to the UE a control message indicating cancellation of a first resource among the multiple resources; determining one or more phase continuity conditions for the multiple resources based at least in part on the transmission of the control message indicating cancellation of the first resource; and receiving at least a subset of the multiple uplink shared channel transmissions and at least a subset of the multiple DMRSs in one or more remaining resources among the multiple resources according to the one or more phase continuity conditions.

[0305] Aspect 18: The method of aspect 17 further includes: receiving a subset of the plurality of DMRSs having phase continuity across the plurality of TTIs, at least in part based on a time duration between the start of the first resource and the next uplink shared channel transmission in the plurality of uplink shared channel transmissions satisfying a threshold time interval.

[0306] Aspect 19: The method of aspect 18, wherein the threshold time interval includes the number of symbol periods.

[0307] Aspect 20: The method of any one of Aspects 18 to 19 further includes: transmitting to the UE an indication of the threshold time interval.

[0308] Aspect 21: The method of any one of Aspects 18 to 20 further includes: receiving an indication of the threshold time interval from the UE.

[0309] Aspect 22: The method of any one of Aspects 17 to 21, wherein the receiving further comprises: receiving a first subset of the plurality of DMRS having a first phase coherence, and a second subset of the plurality of DMRS having a second phase coherence, based at least in part on a time interval between the start of the first resource and the next uplink shared channel transmission in the plurality of uplink shared channel transmissions not satisfying a threshold time interval.

[0310] Aspect 23: The method of aspect 22, wherein the first subset of the plurality of DMRSs is received before the first resource, and the second subset of the plurality of DMRSs is received after the first resource.

[0311] Aspect 24: The method of any one of Aspects 17 to 23, wherein the receiving further comprises: receiving a first subset of the plurality of DMRS having a first phase coherence, and a second subset of the plurality of DMRS having a second phase coherence, at least in part based on the first resource comprising one or more symbols allocated to one of the plurality of DMRS.

[0312] Aspect 25: The method of aspect 24, wherein the one or more symbols allocated for the plurality of DMRSs include all symbols allocated for the plurality of DMRSs within the TTI of the plurality of TTIs.

[0313] Aspect 26: The method of any one of Aspects 17 to 25, wherein the receiving further comprises: receiving, at least in part, a subset of the plurality of DMRSs having phase coherence across the plurality of TTIs based on the fact that the first resource does not include any symbols allocated for the plurality of DMRSs.

[0314] Aspect 27: The method of any one of Aspects 17 to 26 further includes: receiving from the UE an indication of one or more phase continuity conditions supported by the UE, wherein transmitting the control message, determining the one or more phase continuity conditions, or both are based at least in part on receiving the indication of one or more phase continuity conditions supported by the UE.

[0315] Aspect 28: The method of any one of Aspects 17 to 27, wherein for each of the plurality of TTIs, the plurality of resources includes a first subset of resources allocated for the plurality of uplink shared channel transmissions and a second subset of resources allocated for the plurality of DMRSs.

[0316] Aspect 29: The method of any one of Aspects 17 to 28, wherein the plurality of uplink shared channel transmissions includes multiple repetitions of the same uplink shared channel transmission, or the plurality of uplink shared channel transmissions includes a first uplink shared channel transmission and a second uplink shared channel transmission different from the first uplink shared channel transmission.

[0317] Aspect 30: The method of any one of Aspects 17 to 29 further includes: determining a channel estimate based at least in part on the subset of the aggregated DMRSs; and demodulating the subset of the aggregate uplink shared channel transmissions based at least in part on the channel estimate.

[0318] Aspect 31: An apparatus for wireless communication at a UE, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory, which can be executed by the processor to cause the apparatus to perform a method as described in any one of Aspects 1 to 16.

[0319] Aspect 32: An apparatus for wireless communication at a UE, comprising at least one means for performing a method as described in any one of aspects 1 to 16.

[0320] Aspect 33: A non-transient computer-readable medium storing code for wireless communication at a UE, the code including instructions executable by a processor to perform methods as described in any of Aspects 1 to 16.

[0321] Aspect 34: An apparatus for wireless communication at a base station, 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 the method of any one of aspects 17 to 30.

[0322] Aspect 35: An apparatus for wireless communication at a base station, comprising at least one means for performing the method of any one of aspects 17 to 30.

[0323] Aspect 36: A non-transient computer-readable medium storing code for wireless communication at a base station, the code including instructions executable by a processor to perform methods as described in any of Aspects 17 to 30.

[0324] It should be noted that the methods described in this paper describe possible implementations, and the operations and steps can be rearranged or otherwise modified, and other implementations are also possible. Furthermore, aspects from two or more methods can be combined.

[0325] While aspects of LTE, LTE-A, LTE-A Pro, or NR systems may be described for illustrative purposes, and the terms LTE, LTE-A, LTE-A Pro, or NR may be used in most of the description, the techniques described herein can also be applied to networks other than LTE, LTE-A, LTE-A Pro, or NR networks. For example, the described techniques can be applied to a variety of other wireless communication systems, such as Ultra Mobile Broadband (UMB), IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash-OFDM, and other systems and radio technologies not explicitly mentioned herein.

[0326] The information and signals described herein can be represented using any of a wide variety of different techniques and methods. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout this description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or any combination thereof.

[0327] The various illustrative boxes and components described herein can be implemented or executed using a general-purpose processor, DSP, ASIC, CPU, 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. The general-purpose processor may be a microprocessor, but in alternatives, 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, multiple microprocessors, one or more microprocessors working in conjunction with a DSP core, or any other such configuration).

[0328] 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 or transmitted as one or more instructions or code on a computer-readable medium. Other examples and implementations fall within the scope of this disclosure and the appended claims. For example, due to the nature of software, the functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwired, or any combination thereof. Features implementing the functions may also be physically located in various locations, including being distributed such that different parts of the function are implemented at different physical locations.

[0329] Computer-readable media includes both non-transient computer storage media and communication media, encompassing any medium that facilitates the transfer of a computer program from one location to another. Non-transient storage media can be any available medium accessible to a general-purpose or special-purpose computer. By way of example and not limitation, non-transient computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM), flash memory, compact disc (CD) ROM or other optical disc storage, magnetic disk storage or other magnetic storage devices, or any other non-transient medium that can be used to carry or store desired program code in the form of instructions or data structures and is accessible to a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor. Similarly, any connection is also legitimately referred to as computer-readable media. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then that coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of computer-readable media. As used in this article, disk and disc include CDs, laser discs, optical discs, DVDs, floppy disks, and Blu-ray discs, where disks often magnetically reproduce data while discs optically reproduce data using lasers. Combinations of these media are also included within the scope of computer-readable media.

[0330] As used herein (including in the claims), the word "or" in an enumeration of items (e.g., an enumeration of items accompanied by phrases such as "at least one of" or "one or more of") indicates an inclusive enumeration, such that an enumeration of at least one of, for example, 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). Similarly, as used herein, the phrase "based on" should not be interpreted as referring to a closed set of conditions. For example, an example step described as "based on condition A" may 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 "at least partially based on".

[0331] In the accompanying drawings, similar components or features may have the same reference numerals. Furthermore, components of the same type may be distinguished by a dash following the reference numeral and a second reference numeral used to differentiate between similar components. If only the first reference numeral is used in the description, the description may apply to any of the similar components having the same first reference numeral, regardless of the second reference numeral or other subsequent reference numerals.

[0332] The descriptions herein, illustrated with reference to the accompanying drawings, depict exemplary configurations and are not representative of all examples that may be implemented or fall within the scope of the claims. The term "example" as used herein means "serving as an example, instance, or illustration" and does not imply "superior" or "outperforming" other examples. This detailed description includes specific details to provide an understanding of the described techniques. However, these techniques may be practiced without these specific details. In some instances, known structures and devices are shown in block diagram form to avoid obscuring the concepts of the described examples.

[0333] The description provided herein is intended to enable those skilled in the art to make or use this disclosure. Various modifications to this disclosure will be apparent to those skilled in the art, and the universal principles defined herein can be applied to other variations without departing from the scope of this disclosure. Therefore, this disclosure is not limited to the examples and designs described herein, but should be granted the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A method for conducting wireless communication at a user equipment (UE), comprising: The control signaling is received from the base station, which indicates multiple resources for transmitting multiple uplink shared channel transmissions and multiple demodulation reference signals with phase continuity across multiple transmission time intervals; Receive a control message from the base station indicating the cancellation of a first resource among the plurality of resources; One or more phase continuity conditions for the plurality of resources are determined at least in part based on the received control message instructing the cancellation of the first resource; as well as According to the one or more phase continuity conditions, at least a subset of the multiple uplink shared channel transmissions and at least a subset of the multiple demodulation reference signals are transmitted in one or more remaining resources among the multiple resources.

2. The method of claim 1, further comprising: The subset of the plurality of demodulation reference signals having phase continuity across the plurality of transmission time intervals is transmitted, at least in part based on the time duration between the start of the first resource and the next uplink shared channel transmission in the plurality of uplink shared channel transmissions satisfying a threshold time interval.

3. The method of claim 2, wherein the threshold time interval includes the number of symbol periods.

4. The method of claim 2, further comprising: Receive an indication of the threshold time interval from the base station.

5. The method of claim 2, further comprising: The base station is transmitted with an indication of the threshold time interval.

6. The method of claim 1, wherein the transmission further comprises: The first subset of the plurality of demodulated reference signals having a first phase coherence and the second subset of the plurality of demodulated reference signals having a second phase coherence are transmitted, based at least in part on a time interval in which the time duration between the start of the first resource and the next uplink shared channel transmission in the plurality of uplink shared channel transmissions does not meet a threshold time interval.

7. The method of claim 6, wherein the first subset of the plurality of demodulation reference signals is transmitted before the first resource, and wherein the second subset of the plurality of demodulation reference signals is transmitted after the first resource.

8. The method of claim 1, wherein the transmission further comprises: The first subset of the plurality of demodulation reference signals having a first phase coherence and the second subset of the plurality of demodulation reference signals having a second phase coherence are transmitted, at least in part based on the first resource, which includes one or more symbols allocated to one of the plurality of demodulation reference signals.

9. The method of claim 8, wherein the one or more symbols allocated to the plurality of demodulation reference signals include all symbols allocated to the plurality of demodulation reference signals within the transmission time intervals of the plurality of transmission time intervals.

10. The method of claim 1, wherein the transmission further comprises: The subset of the plurality of demodulation reference signals that has phase coherence across the plurality of transmission time intervals is transmitted, at least in part, based on the fact that the first resource does not include any symbols allocated for the plurality of demodulation reference signals.

11. The method of claim 1, further comprising: The control message is transmitted to the base station with an indication of one or more phase continuity conditions supported by the UE, wherein receiving the control message, determining the one or more phase continuity conditions, or both are based at least in part on transmitting the indication of one or more phase continuity conditions supported by the UE.

12. The method of claim 1, wherein for each of the plurality of transmission time intervals, the plurality of resources includes a first subset of resources allocated for the plurality of uplink shared channel transmissions and a second subset of resources allocated for the plurality of demodulation reference signals.

13. The method of claim 1, wherein the plurality of uplink shared channel transmissions includes multiple repetitions of the same uplink shared channel transmission.

14. The method of claim 1, wherein the plurality of uplink shared channel transmissions includes a first uplink shared channel transmission scheduled via a first scheduling grant and a second uplink shared channel transmission scheduled by a second scheduling grant different from the first scheduling grant.

15. The method of claim 1, wherein the plurality of transmission time intervals comprises a plurality of time slots.

16. The method of claim 1, wherein the control message indicating the cancellation includes an uplink cancellation indication message.

17. A method for conducting wireless communication at a base station, comprising: Control signaling is transmitted to user equipment (UE) indicating multiple resources for transmitting multiple uplink shared channel transmissions and multiple demodulation reference signals with phase continuity across multiple transmission time intervals; Transmit a control message to the UE indicating the cancellation of the first resource among the plurality of resources; One or more phase continuity conditions for the plurality of resources are determined at least in part based on the control message that transmits an instruction to cancel the first resource; as well as According to the one or more phase continuity conditions, at least a subset of the multiple uplink shared channel transmissions and at least a subset of the multiple demodulation reference signals are received in one or more remaining resources of the multiple resources.

18. The method of claim 17, further comprising: The subset of the plurality of demodulation reference signals having phase continuity across the plurality of transmission time intervals is received, at least in part, based on the time duration between the start of the first resource and the next uplink shared channel transmission in the plurality of uplink shared channel transmissions satisfying a threshold time interval.

19. The method of claim 18, wherein the threshold time interval includes the number of symbol periods.

20. The method of claim 17, wherein receiving further comprises: The first subset of the plurality of demodulation reference signals having a first phase coherence and the second subset of the plurality of demodulation reference signals having a second phase coherence are received, at least in part based on the time duration between the start of the first resource and the next uplink shared channel transmission in the plurality of uplink shared channel transmissions not meeting a threshold time interval.

21. The method of claim 20, wherein the first subset of the plurality of demodulation reference signals is received before the first resource, and wherein the second subset of the plurality of demodulation reference signals is received after the first resource.

22. The method of claim 17, wherein receiving further comprises: The first subset of the plurality of demodulation reference signals having a first phase coherence and the second subset of the plurality of demodulation reference signals having a second phase coherence are received, at least in part, based on the first resource including one or more symbols allocated to one of the plurality of demodulation reference signals.

23. The method of claim 22, wherein the one or more symbols allocated to the plurality of demodulation reference signals include all symbols allocated to the plurality of demodulation reference signals within a transmission time interval of the plurality of transmission time intervals.

24. The method of claim 17, wherein receiving further comprises: The subset of the plurality of demodulation reference signals that has phase coherence across the plurality of transmission time intervals is received, at least in part, based on the fact that the first resource does not include any symbols allocated for the plurality of demodulation reference signals.

25. The method of claim 17, further comprising: The control message is received from the UE for one or more phase continuity conditions supported by the UE, wherein the transmission of the control message, the determination of the one or more phase continuity conditions, or both are based at least in part on receiving the indication for one or more phase continuity conditions supported by the UE.

26. The method of claim 17, wherein for each of the plurality of transmission time intervals, the plurality of resources includes a first subset of resources allocated for the plurality of uplink shared channel transmissions and a second subset of resources allocated for the plurality of demodulation reference signals.

27. The method of claim 17, wherein: The plurality of uplink shared channel transmissions include multiple repetitions of the same uplink shared channel transmission, or the plurality of uplink shared channel transmissions include a first uplink shared channel transmission and a second uplink shared channel transmission that is different from the first uplink shared channel transmission.

28. The method of claim 17, further comprising: The channel estimate is determined at least in part based on the subset of the plurality of demodulated reference signals; as well as The subset of the multiple uplink shared channel transmissions is demodulated at least in part based on the channel estimation.

29. An apparatus for conducting wireless communication at a user equipment (UE), comprising: processor; Memory coupled to the processor; as well as Instructions stored in the memory and executable by the processor to cause the device to perform the following operations: The control signaling is received from the base station, which indicates multiple resources for transmitting multiple uplink shared channel transmissions and multiple demodulation reference signals with phase continuity across multiple transmission time intervals; Receive a control message from the base station indicating the cancellation of a first resource among the plurality of resources; One or more phase continuity conditions for the plurality of resources are determined at least in part based on the received control message instructing the cancellation of the first resource; as well as According to the one or more phase continuity conditions, at least a subset of the multiple uplink shared channel transmissions and at least a subset of the multiple demodulation reference signals are transmitted in one or more remaining resources among the multiple resources.

30. An apparatus for conducting wireless communication at a base station, comprising: processor; Memory coupled to the processor; as well as Instructions stored in the memory and executable by the processor to cause the device to perform the following operations: Control signaling is transmitted to user equipment (UE) indicating multiple resources for transmitting multiple uplink shared channel transmissions and multiple demodulation reference signals with phase continuity across multiple transmission time intervals; Transmit a control message to the UE indicating the cancellation of the first resource among the plurality of resources; One or more phase continuity conditions for the plurality of resources are determined at least in part based on the control message that transmits an instruction to cancel the first resource; as well as According to the one or more phase continuity conditions, at least a subset of the multiple uplink shared channel transmissions and at least a subset of the multiple demodulation reference signals are received in one or more remaining resources of the multiple resources.

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