Conflict handling for semi-persistent scheduling signals

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a base station may identify a conflict between a first resource for a downlink semi-persistent scheduled communication and a second resource for another downlink signal; and perform an action to mitigate the conflict based at least in part on identifying the conflict. In some aspects, a user equipment (UE) may identify a conflict between a first resource for a downlink semi-persistent scheduled (SPS) communication and a second resource for another downlink signal; and determine an action to be performed by the base station to mitigate the conflict based at least in part on identifying the conflict; and selectively receive the downlink SPS communication or the other downlink signal based at least in part on the determination. Numerous other aspects are provided.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Provisional Patent Application No. 62 / 740,762, filed on October 3, 2018, entitled “COLLISION HANDLING FOR SEMI-PERSISTENT SCHEDULING SIGNALS,” and U.S. Non-Provisional Patent Application No. 16 / 588,687, filed on September 30, 2019, entitled “COLLISION HANDLING FOR SEMI-PERSISTENT SCHEDULING SIGNALS,” which are hereby expressly incorporated herein by reference.

[0003] Public domain

[0004] Aspects of the present disclosure relate generally to wireless communications and, more particularly, to techniques and apparatus for collision handling of semi-persistent scheduling (SPS) signals.

[0005] background

[0006] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0007] A wireless communication network may include several base stations (BS) that can support communication of several user equipments (UEs). User equipments (UEs) may communicate with base stations (BSs) via downlinks and uplinks. Downlinks (or forward links) refer to the communication link from a BS to a UE, while uplinks (or reverse links) refer to the communication link from a UE to a BS. As will be described in more detail herein, a BS may be referred to as a Node B, a gNB, an Access Point (AP), a Radio Head, a Transmit Receive Point (TRP), a New Radio (NR) BS, a 5G Node B, and the like.

[0008] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user equipment to communicate at the city, country, region, and even global level. New Radio (NR) (which may also be referred to as 5G) is an enhancement set to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP). NR is designed to better support mobile broadband Internet access by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) on the uplink (UL), and supporting beamforming, multiple input multiple output (MIMO) antenna technology and carrier aggregation. Other open standards are better integrated to better support mobile broadband Internet access. However, as the demand for mobile broadband access continues to grow, there is a need for further improvements in LTE and NR technologies. Preferably, these improvements should be applicable to other multiple access technologies and telecommunication standards that adopt these technologies.

[0009] Overview

[0010] In some aspects, a wireless communication method performed by a user equipment (UE) may include: identifying a conflict between a first resource used for a downlink semi-persistent scheduling (SPS) communication and a second resource used for another downlink signal; determining an action to be performed by a base station to mitigate the conflict based at least in part on identifying the conflict; and selectively receiving the downlink SPS communication or the other downlink signal based at least in part on the determination.

[0011] In some aspects, a UE for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: identify a conflict between a first resource for downlink SPS communication and a second resource for another downlink signal; determine an action to be performed by a base station to mitigate the conflict based at least in part on identifying the conflict; and selectively receive the downlink SPS communication or the another downlink signal based at least in part on the determination.

[0012] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the one or more processors to: identify a conflict between a first resource for downlink SPS communication and a second resource for another downlink signal; determine an action to be performed by a base station to mitigate the conflict based at least in part on identifying the conflict; and selectively receive the downlink SPS communication or the another downlink signal based at least in part on the determination.

[0013] In some aspects, an apparatus for wireless communications may include: a device for identifying a conflict between a first resource for downlink SPS communication and a second resource for another downlink signal; a device for determining an action to be performed by a base station to mitigate the conflict based at least in part on identifying the conflict; and a device for selectively receiving the downlink SPS communication or the other downlink signal based at least in part on the determination.

[0014] In some aspects, a wireless communication method performed by a base station may include: identifying a conflict between a first resource used for downlink semi-persistent scheduling (SPS) communication and a second resource used for another downlink signal; and performing an action to mitigate the conflict based at least in part on identifying the conflict.

[0015] In some aspects, a base station for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: identify a conflict between a first resource used for a downlink semi-persistent scheduling (SPS) communication and a second resource used for another downlink signal; and perform an action to mitigate the conflict based at least in part on identifying the conflict.

[0016] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a base station, may cause the one or more processors to: identify a conflict between a first resource used for a downlink semi-persistent scheduling (SPS) communication and a second resource used for another downlink signal; and perform an action to mitigate the conflict based at least in part on identifying the conflict.

[0017] In some aspects, an apparatus for wireless communications may include: a device for identifying a conflict between a first resource for downlink semi-persistent scheduling (SPS) communication and a second resource for another downlink signal; and a device for performing an action to mitigate the conflict based at least in part on identifying the conflict.

[0018] Aspects generally include methods, apparatus, systems, computer program products, non-transitory computer readable media, user equipment, base stations, wireless communication devices, and processing systems as substantially described herein with reference to and as illustrated in the accompanying drawings and specification.

[0019] The foregoing has broadly outlined the features and technical advantages of examples according to the present disclosure in an effort to make the following detailed description better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be easily used as a basis for modifying or designing other structures for implementing the same purpose as the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the accompanying drawings is provided for illustration and description purposes and does not define limitations on the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to understand the above-stated features of the present disclosure in detail, the above briefly summarized content may be described in more detail with reference to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and should not be considered to limit its scope, as the description may allow for other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0022] Figure 1 is a block diagram conceptually illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

[0023] Figure 2 is a block diagram conceptually illustrating an example of a base station in communication with a user equipment (UE) in a wireless communication network according to various aspects of the present disclosure.

[0024] Figure 3 is a diagram illustrating an example of collision handling for semi-persistent scheduling signals according to various aspects of the present disclosure.

[0025] Figure 4 is a diagram illustrating an example of conflict handling for semi-persistent scheduling signals for synchronization signal blocks or rate-matched resources in accordance with various aspects of the present disclosure.

[0026] Figure 5 is a diagram illustrating an example of conflict handling for semi-persistent scheduling signals for resource element level reserved resources or reference signals in accordance with various aspects of the present disclosure.

[0027] Figure 6 is a diagram illustrating an example process, performed, for example, by user equipment, in accordance with various aspects of the present disclosure.

[0028] Figure 7 is a diagram illustrating example processes performed, for example, by a base station in accordance with various aspects of the present disclosure.

[0029] Detailed Description

[0030] The various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be implemented in many different forms and should not be interpreted as being limited to any specific structure or function given throughout the present disclosure. On the contrary, these aspects are provided to make the present disclosure thorough and complete, and it will fully convey the scope of the present disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will appreciate that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether it is implemented independently or in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein can be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using supplements or other other structures, functionality, or structures and functionality as the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be implemented by one or more elements of the claims.

[0031] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0032] It should be noted that although various aspects may be described herein using terminology typically associated with 3G and / or 4G wireless technologies, various aspects of the present disclosure may be applied in communication systems based on other generations, such as 5G and later generations, including NR technologies.

[0033] Figure 11 is a diagram illustrating a network 100 in which various aspects of the present disclosure may be practiced. The network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include several BSs 110 (shown as BSs 110a, BSs 110b, BSs 110c, and BSs 110d) and other network entities. A BS is an entity that communicates with a user equipment (UE) and may also be referred to as a base station, NR BS, B node, gNB, 5G B node (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a particular geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.

[0034] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown in , BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "B node", "5G NB", and "cell" may be used interchangeably herein.

[0035] In some aspects, the cell may not necessarily be stationary, and the geographic area of ​​the cell may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected to each other and / or to one or more other BSs or network nodes (not shown) in the access network 100 via various types of backhaul interfaces, such as direct physical connections, virtual networks, and / or the like using any suitable transport network.

[0036] The wireless network 100 may also include a relay station. A relay station is an entity that can receive transmissions of data from an upstream station (e.g., a BS or a UE) and send transmissions of the data to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions for other UEs. Figure 1 In the example shown in , a relay station 110d may communicate with a macro BS 110a and a UE 120d to facilitate communication between the BS 110a and the UE 120d. A relay station may also be referred to as a relay BS, a relay base station, a relay, or the like.

[0037] The wireless network 100 may be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).

[0038] A network controller 130 may be coupled to a set of BSs and may provide coordination and control of these BSs. The network controller 130 may communicate with each BS via a backhaul. The BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0039] UE 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be stationary or mobile. UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE may be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, a biometric sensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), an entertainment device (e.g., a music or video device, or a satellite radio), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0040] Some UEs may be considered as machine type communication (MTC) UEs, or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which may communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide connectivity to or to a network (e.g., a wide area network, such as the Internet or a cellular network), for example, via a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as client equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120, such as a processor component, a memory component, etc.

[0041] In general, any number of wireless networks may be deployed in a given geographic area. Each wireless network may support a specific RAT and may operate on one or more frequencies. RAT may also be referred to as radio technology, air interface, etc. Frequency may also be referred to as carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0042] In some aspects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly (e.g., without using base station 110 as an intermediary to communicate with each other) using one or more sidelink channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0043] As indicated above, Figure 1 These are provided as examples only. Other examples may differ from those described herein. Figure 1 Examples described.

[0044] Figure 2 A block diagram of a design 200 of a base station 110 and a UE 120 is shown, which may be Figure 1 One for each base station and one for each UE in the base station 110. Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general T≧1 and R≧1.

[0045] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS selected for the UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and may provide T output symbol streams to T modulators (MOD) / demodulators (DEMOD) 232a to 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t may be transmitted via T antennas 234a to 234t, respectively. According to various aspects described in more detail below, position coding may be used to generate synchronization signals to convey additional information.

[0046] At UE 120, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations and may provide received signals to demodulators (DEMOD) / modulators (MOD) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols where applicable, and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 may be included in a housing.

[0047] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266, if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, uplink signals from the UE 120 as well as other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236, if applicable, and further processed by the receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide decoded data to a data sink 239 and decoded control information to a controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.

[0048] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other components of the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component(s) may perform or direct e.g. Figure 6 The operations of process 600 and / or other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. Scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.

[0049] In some aspects, a UE (e.g., UE 120) may include means for identifying a conflict between a first resource used for a downlink semi-persistent scheduling (SPS) communication and a second resource used for another downlink signal; means for determining an action to be performed by a base station to mitigate the conflict based at least in part on identifying the conflict; means for selectively receiving the downlink SPS communication or the other downlink signal based at least in part on the determination; means for transmitting a negative acknowledgement of the downlink SPS communication; means for identifying the first resource as unavailable for a downlink data channel based at least in part on the conflict; and the like. In some aspects, such means may include a method of combining Figure 2 One or more components of UE 120 are described.

[0050] In some aspects, a base station (e.g., BS110) may include a device for identifying a conflict between a first resource used for a downlink semi-persistent scheduling (SPS) communication and a second resource used for another downlink signal; a device for performing an action to mitigate the conflict based at least in part on identifying the conflict; a device for canceling the transmission of the downlink SPS communication or determining that the downlink SPS communication will not be transmitted; a device for canceling the transmission of the downlink SPS communication based at least in part on a configurable threshold associated with a ratio of overlapping resources or an effective rate of the downlink SPS communication; a device for moving a demodulation reference signal for the downlink SPS communication to a third resource, wherein the third resource does not overlap with the second resource; a device for moving the demodulation reference signal for the downlink SPS communication to the third resource based at least in part on the third resource associated with the second mode not overlapping with the second resource; a device for matching a data portion of the downlink SPS communication around overlapping resources of the first resource and the second resource; a device for puncturing the data portion of the downlink SPS communication on the overlapping resources; and the like. In some aspects, such devices may include a combination of Figure 2 One or more components of BS 110 are described.

[0051] As indicated above, Figure 2 These are provided as examples only. Other examples may differ from those described herein. Figure 2 Examples described.

[0052] Semi-persistent scheduling (SPS) is a mechanism for providing periodic resource allocation for downlink transmission. For example, an SPS configuration may be associated with a fixed resource block allocation. SPS communications may be associated with a payload (e.g., a downlink shared channel) and a reference signal such as a demodulation reference signal. In some radio access technologies (such as 5G / NR), downlink SPS communications may be scheduled at a shorter periodicity than in some legacy implementations to support periodic low latency traffic. For example, downlink SPS communications may be scheduled once every 2 symbols, once every 7 symbols, once every time slot, or at different periodicities.

[0053] In the case of downlink SPS communications, it may be difficult to avoid conflicts between downlink SPS communications and other downlink signals, channels or transmissions, especially for downlink SPS communications with short periods. In this case, it may not be particularly helpful to always discard conflicting SPS communications because this may affect the performance of downlink SPS communications. Other (e.g., conflicting) downlink signals may include, for example, synchronization signals or physical broadcast channel blocks (referred to herein as synchronization signal blocks or SS / PBCH blocks), reference signals (e.g., channel state information reference signals or another reference signal), control resource sets (CORESET), rate-matched resource sets, and the like.

[0054] Some techniques and devices described herein provide techniques for mitigating conflicts between downlink SPS communication resources and resources for another downlink signal or communication. For example, some techniques and devices described herein may be used to enable a base station to determine resource allocations to mitigate conflicts, determine actions to be performed to mitigate conflicts, transmit communications in a manner to mitigate conflicts, and the like. In certain aspects, some techniques and devices described herein may be used to enable a wireless communication device (e.g., UE) to determine actions that may be performed by another wireless communication device (e.g., base station) to mitigate conflicts, determine resource allocations that will be used to mitigate conflicts, and the like. In this way, conflicts between downlink SPS communications and another signal or communication are mitigated, thereby improving the performance of the downlink SPS communication and the other signal or communication, particularly in the case of short-cycle SPS communications.

[0055] Figure 3 is a diagram illustrating an example 300 of collision handling for semi-persistent scheduling signals in accordance with various aspects of the present disclosure.

[0056] As in Figure 3 1 and shown by reference numeral 310, BS 110 may configure downlink SPS communication for UE 120. In some aspects, BS 110 may transmit configuration information, control information, scheduling information, etc. to configure downlink SPS communication. In some aspects, BS 110 may configure downlink SPS communication for a first resource. For example, the first resource may be repeated once every N resources (e.g., symbols, time slots, subframes, etc.), where N is an integer.

[0057] The downlink SPS communication may include or contain a reference signal (e.g., a demodulation reference signal (DMRS) or another reference signal) and a data portion (e.g., a physical downlink shared channel (PDSCH) or another data channel). The UE 120 may not be able to decode the data portion without successfully receiving the reference signal. The first resource may include one or more resources (e.g., symbols, frequency modulation, etc.) for the reference signal and the data portion.

[0058] As shown in reference numeral 320, BS 110 may identify a conflict between a first resource used for downlink SPS communication and a second resource used for another downlink signal. In some aspects, the conflict may be associated with, for example, high priority traffic (e.g., ultra-reliable low latency traffic), etc. For example, BS 110 may determine that the first resource and the second resource at least partially overlap. In some aspects, the another downlink signal may include synchronization signal blocks, rate-matched resources, resource element level reserved resources (e.g., cell-specific reference signals, zero-power channel state information reference signals, etc.), channel state information reference signals, etc.

[0059] In certain aspects, BS 110 may determine which portion of the first resource or the second resource is associated with the conflict. For example, BS 110 may determine whether a portion of the first resource associated with a reference signal of a downlink SPS communication or a portion of the first resource associated with a data portion of the downlink SPS communication is associated with the conflict. BS 110 may select an action to perform based at least in part on the portion of the first resource or the second resource associated with the conflict.

[0060] As shown in reference numeral 330, BS110 may perform an action to mitigate the conflict based at least in part on identifying the conflict. In some aspects, BS110 may determine the action to be performed, as described in more detail below. In some aspects, BS110 may perform scheduling of downlink SPS communication and another downlink signal based at least in part on an action to mitigate the conflict. In some aspects, the action to mitigate the conflict may be scheduling downlink SPS communication and another downlink signal to reduce or eliminate the conflict. In this way, BS110 may reduce the conflict between downlink SPS communication and another downlink signal.

[0061] In some aspects, the other downlink signal may include a synchronization signal block or a rate-matched resource set. For example, the other downlink signal may be associated with resource block-level reserved resources. In some aspects, BS110 may cancel the downlink SPS communication. For example, BS110 may determine that the downlink SPS communication will not be transmitted in the first resource. In some aspects, BS110 may move the downlink SPS communication to a third resource that does not overlap or conflict with the second resource. For example, when another downlink communication conflicts with the DMRS of the downlink SPS communication, BS110 may move the DMRS to the third resource and / or may rate match the data portion of the downlink SPS communication. This is described below in conjunction with Figure 4 Describe in more detail.

[0062] In some aspects, BS110 may selectively cancel the transmission of downlink SPS communication (or may determine that downlink SPS communication will not be transmitted). For example, BS110 may selectively cancel the transmission of downlink SPS communication based at least in part on a threshold or condition. As an example, BS110 may cancel the transmission based at least in part on determining that the ratio of overlapping data portion resources (e.g., of the first resource and the second resource) meets a threshold. The threshold may be configurable (e.g., using radio resource control messaging or another technique). As another example, BS110 may cancel the transmission when the effective rate of the data portion of the downlink SPS communication is greater than the scheduled rate of the data portion (e.g., signaled using a modulation and coding scheme value) by a threshold amount. As a third example, BS110 may cancel the transmission of downlink SPS communication when there are no resources available for the DMRS of the downlink SPS communication (e.g., when another downlink signal occupies the entire downlink SPS communication).

[0063] In certain aspects, the other downlink signal may include resource element level reserved resources, such as a cell-specific reference signal or a zero-power channel state information reference signal, a non-zero-power channel state information reference signal, and the like. In this case, if the DMRS of the downlink SPS communication conflicts with the resources of the other downlink signal, the BS 110 may move the DMRS to another resource. For example, if the first DMRS group of the symbol is used for downlink SPS communication and / or if the resources of the second DMRS group for the symbol are available (e.g., if the resources of the second DMRS group for the symbol are not allocated to another UE or another DMRS port of the same UE) and / or if the resources for the second DMRS group do not conflict with the other downlink signal, the BS 110 may move the DMRS to the resources of the second DMRS group. If the above conditions are not met (e.g., if the resources of the second DMRS group are not available or conflict with the other downlink signal), the BS 110 may move the DMRS to another symbol that does not conflict with the other downlink signal. In the above situation, BS 110 may rate match the data portion of the downlink SPS communication around the occupied resources, or may puncture the data portion of the downlink SPS communication. Figure 5 For a more detailed description of conflict mitigation in the resource element level reserved resource scenario, refer to the description of .

[0064] In some aspects, the first resource and the second resource may be associated with the same symbol (e.g., the same OFDM symbol). In this case, the first resource does not necessarily overlap with the second resource in the frequency domain so that a conflict occurs. For example, if the downlink SPS communication and the other downlink signal are associated with different spatial quasi co-location (QCL) assumptions, it may not be possible to transmit the downlink SPS communication and the other downlink signal using a single beam on overlapping OFDM symbols.

[0065] In certain aspects, when a downlink SPS communication and another downlink signal are scheduled for the same symbol under different QCL assumptions (e.g., QCL configurations), the BS 110 may determine the action to be performed based at least in part on a priority rule. For example, the BS 110 may selectively cancel the downlink SPS communication or the other signal based at least in part on the respective priorities associated with the downlink SPS communication and the other downlink signal. As another example, the BS 110 may cancel the downlink SPS communication when the downlink SPS communication and the other downlink signal are scheduled on overlapping OFDM symbols under different QCL assumptions, regardless of whether the frequency resources used for the downlink SPS communication and the other downlink signal overlap.

[0066] In certain aspects, when a downlink SPS communication and another downlink signal are scheduled for the same symbol under different QCL assumptions, then BS 110 may determine that the symbol is not available for the downlink SPS communication and may move the DMRS of the downlink data channel to a non-colliding symbol. In this case, BS 110 may rate match the data channel accordingly (e.g., BS 110 may rate match the data portion of the downlink SPS communication around the overlapping OFDM symbols and around the DMRS of the downlink SPS communication).

[0067] In some aspects, downlink SPS communication can be scheduled on OFDM symbols 1, 2, ... K, and another signal can be scheduled on a subset (2, 3, ... K-1). That is, there may be parts of downlink SPS communication scheduled before another signal and parts scheduled after the other signal. In this case, when UE 120 and / or the network does not have simultaneous multi-beam reception / transmission capabilities, the downlink SPS communication may not be transmitted on overlapping symbols. However, since the downlink SPS communication is divided into two non-contiguous parts, these two parts may need to include DMRS so that BS110 correctly decodes the data. For example, since there is a beam direction transition between the two parts of the transmission, BS110 may not be able to maintain phase coherence between the two parts. Therefore, the channel estimated from the first part of the downlink SPS communication may be different from the channel estimated from the second part of the downlink SPS communication. Thus, the channel estimation result cannot be shared across the two parts of the transmission. In this case, BS110 may perform one or more of the following actions.

[0068] In some aspects, BS 110 may transmit DMRS in both parts and may rate match the data around the DMRS. For example, if the original downlink SPS communication contains 2 DMRS symbols, BS 110 may ensure that both parts contain DMRS symbols by shifting some DMRS symbols when necessary.

[0069] In some aspects, BS 110 may transmit only one portion (e.g., a portion containing DMRS) and may cancel the portion not containing DMRS. For example, this may occur when the original downlink SPS communication contains only 1 DMRS symbol or when a portion does not include sufficient resources to transmit both DMRS and corresponding data.

[0070] In certain aspects, BS 110 may cancel the transmission, for example based at least in part on the BS 110 being unable to transmit the DMRS in both portions or the downlink SPS communication being cut into two non-contiguous portions.

[0071] In certain aspects, UE 120 may be associated with multi-panel reception capability, meaning that UE 120 may be able to simultaneously receive two or more downlink signals with different spatial QCL information. In this case, UE 120 may signal the maximum number of simultaneous receptions that UE 120 is able to receive. BS 110 may select the number of conflicting downlink signals to be transmitted to UE 120 based at least in part on the respective priorities of the conflicting downlink signals. In this case, BS 110 may perform one or more additional actions described elsewhere herein to mitigate conflicts of the conflicting downlink signals when transmitting the conflicting downlink signals.

[0072] In certain aspects, BS 110 may select the number of colliding downlink signals based at least in part on network capabilities associated with BS 110 and / or UE 120. For example, BS 110 may select the number of colliding downlink signals based at least in part on the number of simultaneous transmissions to UE 120 that the network is capable of performing or is configured to perform (e.g., based at least in part on the number of transmit-receive points (TRPs), antenna panels, etc., available for the network to transmit to UE 120).

[0073] In certain aspects, as shown at reference numeral 340, UE 120 may determine an action to be performed by BS 110 to mitigate the conflict. For example, UE 120 may determine that a downlink SPS communication conflicts with (e.g., overlaps) another downlink signal (e.g., based at least in part on scheduling information, a configuration of UE 120, etc.), and may determine an action to be performed by BS 110 to mitigate the conflict. In this way, UE 120 may determine the action to be performed without BS 110 explicitly signaling the action to be performed, thereby reducing overhead associated with mitigating conflicts.

[0074] In certain aspects, if downlink SPS communication is canceled, UE 120 may send a NACK to BS 110 for the canceled transmission, or may not send any ACK / NACK for the canceled transmission. In the case where downlink SPS communication is canceled, UE 120 may still receive other signals that are not canceled. For example, if downlink SPS communication collides with a downlink channel state information reference signal (CSI-RS) and the downlink SPS communication is canceled, UE 120 may still receive the CSI-RS.

[0075] As indicated above, Figure 3 are provided as examples. Other examples may differ from those described in Figure 3 Examples described.

[0076] Figure 4is a diagram illustrating an example 400 of collision handling for semi-persistent scheduling signals for synchronization signal blocks or rate matched resources in accordance with various aspects of the present disclosure. Figure 4 Resource allocation for synchronization signal blocks (shown as SSBs) and downlink SPS communications is shown. The DMRS for downlink SPS communications is shown by squares with diagonal shading, and the rest of the downlink SPS communications is the data channel for the downlink SPS communications. Figure 4 The horizontal direction in represents time, and Figure 4 The vertical direction in represents frequency. Here, the DMRS of downlink SPS communication is provided in a single OFDM symbol.

[0077] Reference numeral 410 shows a conflict between a synchronization signal block and a downlink SPS communication. As can be seen, the synchronization signal block conflicts with one or more DMRS of the downlink SPS communication. This may affect the reception of the downlink SPS communication because demodulation of the downlink SPS communication may be difficult or impossible when the DMRS is interrupted, punctured or blocked.

[0078] Reference numeral 420 shows an action to mitigate the conflict. As can be seen, the DMRS can be moved to a resource (e.g., an OFDM symbol) that does not conflict with the synchronization signal block. In some aspects, the resource can be the next available OFDM symbol (e.g., the next available OFDM symbol that does not overlap with the synchronization signal block). The data channel of the downlink SPS communication can be rate matched accordingly. In this way, the conflict between the downlink SPS communication and another downlink symbol (e.g., a synchronization signal block) is mitigated. In some aspects, if there is no OFDM symbol available for DMRS transmission (e.g., if all OFDM symbols of the downlink SPS communication overlap with the synchronization signal block), the downlink SPS communication can be cancelled (e.g., it may not be transmitted from BS110).

[0079] As indicated above, Figure 4 are provided as examples. Other examples may differ from those described in Figure 4 Examples described.

[0080] Figure 5 is a diagram illustrating an example 500 of conflict handling for semi-persistently scheduled signals for resource element level reserved resources or reference signals in accordance with various aspects of the present disclosure. Figure 5 Resource allocation for resource element level resource allocation and downlink SPS communication is shown. Figure 5 The horizontal direction in represents time, and Figure 5The vertical direction in represents frequency. The resources of a single OFDM symbol before (left side) and after (right side) conflict mitigation are shown. The DMRS for downlink SPS communication is shown by a square with diagonal shading. The DMRS can be associated with a pattern such as the first comb of a comb 2 structure. Figure 5 In the Comb 2 structure shown, the DMRS is transmitted on the first comb tooth (e.g., using resource elements with even indexes starting at zero). The second pattern of resources is shown using gray fill. For example, the second pattern can be a second comb tooth pattern. The second comb tooth pattern is the second comb tooth of the Comb 2 structure (e.g., odd-indexed resource elements). The first pattern can be used for DMRS to a first UE (e.g., UE 120), and the second pattern can be used for DMRS to a second UE (e.g., UE 120) or another signal. Here, the resources of the second pattern are available (e.g., not used for the second UE). Here, the DMRS for downlink SPS communication is provided in a single OFDM codeword. The UE (e.g., UE 120) can determine the second comb tooth (e.g., Figure 5 whether the gray resources or odd-indexed resource elements in the UE are occupied by another UE.

[0081] As shown in reference numeral 510, a conflict may occur with respect to a DMRS and another downlink signal. As shown in reference numeral 520, when resources of the second mode are available, BS110 may shift the DMRS to the resources of the second mode. Thus, the other signal may be transmitted in overlapping resources (shown using dot filling), and the DMRS may be transmitted in the second mode. If the second mode is occupied, BS110 may cancel the transmission of the DMRS (and thereby cancel the downlink SPS communication), move the DMRS to an OFDM symbol available later, or may perform different actions.

[0082] As indicated above, Figure 5 are provided as examples. Other examples may differ from those described in Figure 5 Examples described.

[0083] Figure 6 is a diagram illustrating an example process 600, performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 600 is an example in which a UE (eg, UE 120, etc.) performs collision handling for SPS signals.

[0084] like Figure 6As shown, in certain aspects, process 600 may include identifying a conflict between a first resource used for downlink semi-persistent scheduling (SPS) communication and a second resource used for another downlink signal (block 610). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, modulator 232, antenna 234, etc.) may identify a conflict. The conflict may be between a first resource used for downlink SPS communication and a second resource used for another downlink signal.

[0085] like Figure 6 As shown, in some aspects, process 600 may include determining, based at least in part on identifying the conflict, actions to be performed by the base station to mitigate the conflict (block 620). For example, the UE (e.g., using antenna 252, demodulator 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may determine, based at least in part on identifying the conflict, actions to be performed by the base station (e.g., BS 110) to mitigate the conflict. The actions may include the above combined with Figure 3-5 One or more of the actions described.

[0086] like Figure 6 As shown, in certain aspects, process 600 may include selectively receiving downlink SPS communications and another downlink signal based at least in part on the determination (block 630). For example, the UE (e.g., using antenna 252, demodulator 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may selectively receive downlink SPS communications or another downlink signal. The UE may selectively receive downlink SPS communications and / or another downlink signal based at least in part on the determination.

[0087] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0088] In a first aspect, the first resource is used for a demodulation reference signal for downlink SPS communication. In a second aspect, alone or in combination with the first aspect, the action may include canceling the transmission of downlink SPS communication. In a third aspect, alone or in combination with the first aspect and / or the second aspect, the wireless communication device may transmit a negative acknowledgement of downlink SPS communication. In a fourth aspect, alone or in combination with any one or more of the first to third aspects, the wireless communication device may receive another downlink signal based at least in part on the cancellation of downlink SPS communication. In a fifth aspect, alone or in combination with any one or more of the first to fourth aspects, canceling the transmission includes canceling the transmission of downlink SPS communication based at least in part on a configurable threshold associated with a ratio of overlapping resources or an effective rate of downlink SPS communication. In a sixth aspect, alone or in combination with any one or more of the first to fifth aspects, canceling the transmission of downlink SPS communication is based at least in part on the fact that there are no resources available or there are limited resource availability (e.g., no resource availability, resource availability that fails to meet a threshold, etc.) for the demodulation reference signal for downlink SPS communication.

[0089] In a seventh aspect, alone or in combination with any one or more of the first to sixth aspects, the action may include determining that downlink SPS communications will not be transmitted. In an eighth aspect, alone or in combination with any one or more of the first to seventh aspects, the action may include moving a demodulation reference signal for downlink SPS communications to a third resource, wherein the third resource does not overlap with the second resource. In some aspects, the third resource is a next sequential resource that does not overlap with the second resource.

[0090] In the ninth aspect, either alone or in combination with any one or more of the first to eighth aspects, another downlink signal is associated with a synchronization signal block or a rate-matched resource set. In the tenth aspect, either alone or in combination with any one or more of the first to ninth aspects, another downlink signal is associated with a resource element level reserved resource or a channel state information reference signal. In the eleventh aspect, either alone or in combination with any one or more of the first to tenth aspects, the first resource is associated with a first mode. The action may include moving a demodulation reference signal of a downlink SPS communication to a third resource associated with the second mode based at least in part on the third resource not overlapping with the second resource.

[0091] In a twelfth aspect, either alone or in combination with any one or more of the first to eleventh aspects, the action may include rate matching a data portion of a downlink SPS communication around an overlapping resource of a first resource and a second resource. In a thirteenth aspect, either alone or in combination with any one or more of the first to twelfth aspects, the action may include puncturing a data portion of a downlink SPS communication on an overlapping resource of a first resource and a second resource. In a fourteenth aspect, either alone or in combination with any one or more of the first to thirteenth aspects, the first resource and the second resource are associated with the same symbol, and the downlink SPS communication and the other downlink signal are associated with different spatial quasi-co-location configurations.

[0092] In a fifteenth aspect, alone or in combination with any one or more of the first to fourteenth aspects, the action may include identifying the first resource as unavailable for a downlink data channel based at least in part on the conflict. In a sixteenth aspect, alone or in combination with any one or more of the first to fifteenth aspects, the action is based at least in part on a priority rule associated with a downlink SPS communication and another downlink signal.

[0093] In a seventeenth aspect, either alone or in combination with any one or more of the first to sixteenth aspects, the action is based at least in part on a capability of a receiver of a downlink SPS communication related to simultaneous reception of multiple spatial beams. In an eighteenth aspect, either alone or in combination with any one or more of the first to seventeenth aspects, the conflict is between an SPS signal and a plurality of other downlink signals including the other signal, and the SPS signal and a subset of the plurality of other downlink signals are selected for transmission based at least in part on the capability.

[0094] In a nineteenth aspect, either alone or in combination with any one or more of the first to eighteenth aspects, the action is based at least in part on whether a network associated with the wireless communication device is configured to perform simultaneous transmission of multiple spatial beams for downlink SPS communications and another downlink signal.

[0095] although Figure 6 An example block diagram of process 600 is shown, but in some aspects, process 600 may include Figure 6 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 600. Additionally or alternatively, two or more blocks of the process 600 may be executed in parallel.

[0096] Figure 7 is a diagram illustrating an example process 700, performed, for example, by a base station, in accordance with various aspects of the present disclosure. Example process 700 is an example in which a base station (eg, BS 110, etc.) performs collision handling for SPS signals.

[0097] like Figure 7 As shown, in certain aspects, process 700 may include identifying a conflict between a first resource used for downlink semi-persistent scheduling (SPS) communication and a second resource used for another downlink signal (block 710). For example, a base station (e.g., using controller / processor 240, controller / processor 280, etc.) may identify a conflict. The conflict may be between a first resource used for downlink SPS communication and a second resource used for another downlink signal.

[0098] like Figure 7 As shown, in some aspects, process 700 may include performing actions to mitigate the conflict based at least in part on identifying the conflict (block 720). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, modulator 232, antenna 234, controller / processor 280, transmit processor 264, TX MIMO processor 266, modulator 254, antenna 252, etc.) may perform actions to mitigate the conflict. The base station may perform the actions based at least in part on identifying the conflict. The actions may include combining the above Figure 3-5 One or more of the actions described.

[0099] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0100] In a first aspect, the first resource is used for a demodulation reference signal for a downlink SPS communication. In a second aspect, either alone or in combination with the first aspect, the base station may cancel the transmission of the downlink SPS communication. In a third aspect, either alone or in combination with the first aspect and / or the second aspect, the base station may cancel the transmission of the downlink SPS communication based at least in part on a configurable threshold associated with a ratio of overlapping resources or an effective rate of the downlink SPS communication. In a fourth aspect, either alone or in combination with any one or more of the first to third aspects, the cancellation of the transmission of the downlink SPS communication is based at least in part on the fact that there are no resources available for the demodulation reference signal for the downlink SPS communication.

[0101] In a fifth aspect, either alone or in combination with any one or more of the first to fourth aspects, the base station may determine that downlink SPS communications will not be transmitted. In a sixth aspect, either alone or in combination with any one or more of the first to fifth aspects, the base station may move a demodulation reference signal for downlink SPS communications to a third resource, wherein the third resource does not overlap with the second resource. In a seventh aspect, either alone or in combination with any one or more of the first to sixth aspects, the third resource is a next sequential resource that does not overlap with the second resource.

[0102] In an eighth aspect, either alone or in combination with any one or more of the first to seventh aspects, another downlink signal is associated with a synchronization signal block or a rate-matched resource set. In a ninth aspect, either alone or in combination with any one or more of the first to eighth aspects, another downlink signal is associated with a resource element level reserved resource or a channel state information reference signal. In a tenth aspect, either alone or in combination with any one or more of the first to ninth aspects, the first resource is associated with a first mode. The base station may move a demodulation reference signal for a downlink SPS communication to a third resource associated with the second mode based at least in part on the third resource not overlapping with the second resource.

[0103] In the eleventh aspect, either alone or in combination with any one or more of the first to tenth aspects, the base station may rate match the data portion of the downlink SPS communication around the overlapping resources of the first resource and the second resource. In the twelfth aspect, either alone or in combination with any one or more of the first to third aspects, the base station may puncture the data portion of the downlink SPS communication on the overlapping resources of the first resource and the second resource. In the thirteenth aspect, either alone or in combination with any one or more of the first to twelfth aspects, the first resource and the second resource are associated with the same codeword, and the downlink SPS communication and the other downlink signal are associated with different spatial quasi-co-location configurations.

[0104] In a fourteenth aspect, alone or in combination with any one or more of the first to thirteenth aspects, the base station may identify the first resource as unavailable for a downlink data channel based at least in part on the conflict. In a fifteenth aspect, alone or in combination with any one or more of the first to fourteenth aspects, the action is based at least in part on a priority rule associated with a downlink SPS communication and another downlink signal.

[0105] In a sixteenth aspect, either alone or in combination with any one or more of the first to third aspects, the action is based at least in part on a capability of a receiver of a downlink SPS communication related to simultaneous reception of multiple spatial beams. In a seventeenth aspect, either alone or in combination with any one or more of the first to sixteenth aspects, the conflict is between an SPS signal and a plurality of other downlink signals including the other signal, and the SPS signal and a subset of the plurality of other downlink signals are selected for transmission based at least in part on the capability.

[0106] In an eighteenth aspect, either alone or in combination with any one or more of the first to seventeenth aspects, the action is based at least in part on whether a network associated with the base station is configured to perform simultaneous transmission of multiple spatial beams for downlink SPS communications and another downlink signal.

[0107] although Figure 7 An example block diagram of process 700 is shown, but in some aspects, process 700 may include Figure 7 Additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in the process 700. Additionally or alternatively, two or more blocks of the process 700 may be executed in parallel.

[0108] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired by practice of the various aspects.

[0109] As used herein, the term component is intended to be broadly interpreted as hardware, firmware, or a combination of hardware and software. As used herein, a processor is implemented with hardware, firmware, or a combination of hardware and software.

[0110] Some aspects are described herein in conjunction with thresholds. As used herein, satisfying a threshold may mean: a value is greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc.

[0111] It will be apparent that the systems and / or methods described herein can be implemented in different forms of hardware, firmware, or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit the various aspects. Thus, the operation and behavior of these systems and / or methods are described herein without reference to specific software codes—it is understood that software and hardware can be designed to implement these systems and / or methods based at least in part on the description herein.

[0112] Although specific feature combinations are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of possible aspects. In fact, many of these features can be combined in a manner not specifically described in the claims and / or not disclosed in the specification. Although each dependent claim listed below can be directly subordinate to only one claim, the disclosure of possible aspects includes that each dependent claim is combined with each other claim in this group of claims. The phrase quoting "at least one of" a column of items refers to any combination of these items, including single members. As an example, "at least one of a, b or c" is intended to cover: a, b, c, ab, ac, bc, and abc, and any combination with multiple identical elements (for example, aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc, or any other sorting of a, b and c).

[0113] Elements, actions or instructions used herein should not be interpreted as critical or necessary unless explicitly described as such. Moreover, as used herein, the articles "one" and "a" are intended to include one or more items, and can be used interchangeably with "one or more". In addition, as used herein, the terms "set (set)" and "group" are intended to include one or more items (e.g., related items, non-related items, combinations of related and non-related items, etc.), and can be used interchangeably with "one or more". In the case of intending to have only one item, the term "one" or similar language is used. Moreover, as used herein, the terms "having", "containing", "including" etc. are intended to be open terms. In addition, the phrase "based on" is intended to mean "based at least in part on", unless otherwise explicitly stated.

Claims

1. A wireless communication method performed by a user equipment (UE), comprising: identifying a conflict between a first resource used for a downlink semi-persistently scheduled (SPS) communication and a second resource used for another downlink signal; determining an action to be performed by a base station to mitigate the conflict based at least in part on identifying the conflict, The actions include at least one of the following: moving a demodulation reference signal for the downlink SPS communication to a third resource that is a next sequential resource after the second resource and does not overlap with the second resource, or canceling transmission of the downlink SPS communication based at least in part on a ratio of overlapping resources, a threshold associated with an effective rate of the downlink SPS communication, or limited resource availability of the demodulation reference signal for the downlink SPS communication; as well as The downlink SPS communication or the another downlink signal is selectively received based at least in part on the determination. 2 . The method of claim 1 , wherein the first resource is used for the demodulation reference signal of the downlink SPS communication.

3. The method of claim 1, further comprising: A negative acknowledgement of the downlink SPS communication is transmitted.

4. The method of claim 1, wherein the action comprises canceling transmission of the downlink SPS communication.

5. The method of claim 4, wherein canceling transmission of the downlink SPS communication is based at least in part on the threshold associated with the ratio of the overlapping resources or the effective rate of the downlink SPS communication.

6. The method of claim 1, wherein canceling transmission of the downlink SPS communication is based at least in part on the limited resource availability.

7. The method of claim 1, wherein the action comprises moving the demodulation reference signal of the downlink SPS communication.

8. The method of claim 1, wherein the another downlink signal is associated with at least one of: Synchronous signal block, rate-matched resource set, The resource is reserved at the resource element level, or Channel State Information Reference Signal.

9. The method of claim 1, wherein the first resource is associated with a first mode, and wherein the third resource is associated with a second mode.

10. The method of claim 1, wherein the actions further comprise at least one of: rate matching a data portion of the downlink SPS communication around overlapping resources of the first resource and the second resource, or The data portion of the downlink SPS communication is punctured on the overlapping resources.

11. The method of claim 1, wherein the first resource and the second resource are associated with a same symbol, and wherein the downlink SPS communication and the another downlink signal are associated with different spatial quasi co-location configurations.

12. The method of claim 11, further comprising: The first resource is identified as unusable for a downlink data channel based at least in part on the conflict.

13. The method of claim 1, wherein the action is based at least in part on priority rules associated with the downlink SPS communication and the another downlink signal.

14. The method of claim 1, wherein the action is based at least in part on a capability of a recipient of the downlink SPS communication related to simultaneous reception of multiple spatial beams.

15. A method as claimed in claim 14, wherein the conflict is between the downlink SPS communication and a plurality of other downlink signals including the another downlink signal, and wherein the action further includes selecting the downlink SPS communication and a subset of the plurality of other downlink signals for transmission based at least in part on the capability.

16. The method of claim 1, wherein the action is based at least in part on whether a network associated with the UE is configured to perform simultaneous transmission of multiple spatial beams for the downlink SPS communication and the another downlink signal.

17. The method of claim 1, wherein the action comprises moving the demodulation reference signal and canceling transmission of the downlink SPS communication.

18. A wireless communication method performed by a base station, comprising: identifying a conflict between a first resource used for a downlink semi-persistently scheduled (SPS) communication and a second resource used for another downlink signal; as well as performing an action to mitigate the conflict based at least in part on identifying the conflict, The performing of the actions comprises at least one of the following: moving a demodulation reference signal for the downlink SPS communication to a third resource that is a next sequential resource after the second resource and does not overlap with the second resource, or Transmission of the downlink SPS communication is canceled based at least in part on a ratio of overlapping resources, a threshold associated with an effective rate of the downlink SPS communication, or limited resource availability of the demodulation reference signal for the downlink SPS communication.

19. The method of claim 18, wherein the first resource is used for the demodulation reference signal for the downlink SPS communication.

20. The method of claim 18, wherein performing the action comprises canceling transmission of the downlink SPS communication.

21. The method of claim 18, wherein canceling transmission of the downlink SPS communication is based at least in part on the limited resource availability.

22. The method of claim 18, wherein performing the action comprises moving the demodulation reference signal of the downlink SPS communication.

23. The method of claim 18, wherein the another downlink signal is associated with at least one of: Synchronous signal block, rate-matched resource set, The resource is reserved at the resource element level, or Channel State Information Reference Signal.

24. The method of claim 18, wherein: The first resource is associated with a first mode, and wherein the third resource is associated with a second mode.

25. The method of claim 18, wherein performing the action further comprises: rate matching a data portion of the downlink SPS communication around overlapping resources of the first resource and the second resource, or The data portion of the downlink SPS communication is punctured on the overlapping resources.

26. The method of claim 18, wherein the first resource and the second resource are associated with a same symbol, and wherein the downlink SPS communication and the another downlink signal are associated with different spatial quasi co-location configurations.

27. The method of claim 18, wherein the action is based at least in part on whether a network associated with the base station is configured to perform simultaneous transmission of multiple spatial beams for the downlink SPS communication and the another downlink signal.

28. The method of claim 18, wherein performing the action comprises moving the demodulation reference signal and canceling transmission of the downlink SPS communication.

29. A user equipment (UE) for wireless communication, comprising: Memory; as well as one or more processors coupled to the memory, the memory and the one or more processors being configured to: identifying a conflict between a first resource used for a downlink semi-persistently scheduled (SPS) communication and a second resource used for another downlink signal; determining an action to be performed by a base station to mitigate the conflict based at least in part on identifying the conflict, The actions include at least one of the following: moving a demodulation reference signal for the downlink SPS communication to a third resource that is a next sequential resource after the second resource and does not overlap with the second resource, or canceling transmission of the downlink SPS communication based at least in part on a ratio of overlapping resources, a threshold associated with an effective rate of the downlink SPS communication, or limited resource availability of the demodulation reference signal for the downlink SPS communication; as well as The downlink SPS communication or the another downlink signal is selectively received based at least in part on the determination.

30. A base station for wireless communication, comprising: Memory; as well as one or more processors coupled to the memory, the memory and the one or more processors being configured to: identifying a conflict between a first resource used for a downlink semi-persistently scheduled (SPS) communication and a second resource used for another downlink signal; and performing an action to mitigate the conflict based at least in part on identifying the conflict, The actions include at least one of the following: moving a demodulation reference signal for the downlink SPS communication to a third resource that is a next sequential resource after the second resource and does not overlap with the second resource, or Transmission of the downlink SPS communication is canceled based at least in part on a ratio of overlapping resources, a threshold associated with an effective rate of the downlink SPS communication, or limited resource availability of the demodulation reference signal for the downlink SPS communication.

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