Dynamic indication of physical downlink control channel monitoring position

Abstract

A user equipment (UE) may receive an indication associated with receiving a downlink control information (DCI) communication. The indication may identify a first physical downlink control channel (PDCCH) listening position associated with receiving the DCI communication during a first time period, and a second PDCCH listening position associated with receiving the DCI communication during a second time period after the first time period. The UE may listen at the first PDCCH listening position and the second PDCCH listening position based at least in part on the indication.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 62 / 910,114, filed on October 3, 2019, entitled “DYNAMIC INDICATION OF PHYSICAL DOWNLINK CONTROL CHANNEL MONITORING LOCATION,” and U.S. Non-Provisional Patent Application No. 16 / 948,834, filed on October 1, 2020, entitled “DYNAMIC INDICATION OF PHYSICAL DOWNLINK CONTROLCHANNEL MONITORING LOCATION,” which are hereby expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and techniques and apparatus for dynamically indicating a physical downlink control channel (PDCCH) listening location. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of 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 released by the Third Generation Partnership Project (3GPP).

[0005] A wireless communication network may include multiple base stations (BS) that may support communications for multiple 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, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user devices to communicate at a city, country, region, or even global level. The new radio (NR), which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard released 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 better integrating with other open standards that use orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with a cyclic prefix (CP) on the downlink (DL), CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), and support beamforming, multiple input multiple output (MIMO) antenna technology, and carrier aggregation. However, as the demand for mobile broadband access continues to increase, 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 employ these technologies. Summary of the invention

[0007] In some aspects, a wireless communication method performed by a user equipment (UE) may include: receiving an indication identifying a physical downlink control channel (PDCCH) listening position associated with receiving a next downlink control information (DCI) communication; and listening at the PDCCH listening position based at least in part on the indication, wherein the indication is valid at least before the PDCCH listening position and is independent of an amount of time between receiving the indication and listening at the PDCCH listening position.

[0008] In some aspects, a UE for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: receive an indication identifying a PDCCH listening location associated with receiving a next DCI communication; and listen at the PDCCH listening location based at least in part on the indication, wherein the indication is valid at least before the PDCCH listening location, regardless of the amount of time between receiving the indication and listening at the PDCCH listening location.

[0009] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a UE, the one or more instructions may cause the one or more processors to: receive an indication identifying a PDCCH listening location associated with receiving a next DCI communication; and listen at the PDCCH listening location based at least in part on the indication, wherein the indication is valid at least before the PDCCH listening location, regardless of the amount of time between receiving the indication and listening at the PDCCH listening location.

[0010] In some aspects, an apparatus for wireless communication may include: a component for receiving an indication identifying a PDCCH listening location associated with receiving a next DCI communication; and a component for listening at the PDCCH listening location based at least in part on the indication, wherein the indication is valid at least before the PDCCH listening location, regardless of an amount of time between receiving the indication and listening at the PDCCH listening location.

[0011] In some aspects, a wireless communication method performed by a base station may include: sending an indication identifying a PDCCH listening position associated with sending a next DCI communication, wherein the indication is valid at least before the PDCCH listening position and is independent of an amount of time between receiving the indication and listening at the PDCCH listening position; and sending the next DCI communication after sending the indication.

[0012] In some aspects, a base station for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: send an indication identifying a PDCCH listening position associated with sending a next DCI communication, wherein the indication is valid at least before the PDCCH listening position, regardless of the amount of time between receiving the indication and listening at the PDCCH listening position; and send the next DCI communication after sending the indication.

[0013] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a base station, the one or more instructions may cause the one or more processors to: send an indication identifying a PDCCH listening position associated with sending a next DCI communication, wherein the indication is valid at least before the PDCCH listening position and regardless of the amount of time between receiving the indication and listening at the PDCCH listening position; and send the next DCI communication after sending the indication.

[0014] In some aspects, an apparatus for wireless communication may include: a component for sending an indication identifying a PDCCH listening location associated with sending a next DCI communication, wherein the indication is valid at least before the PDCCH listening location and is independent of an amount of time between receiving the indication and listening at the PDCCH listening location; and a component for sending the next DCI communication after sending the indication.

[0015] In some aspects, a wireless communication method performed by a UE may include: receiving an indication associated with receiving a DCI communication, the indication identifying: a first PDCCH listening position associated with receiving the DCI communication during a first time period, and a second PDCCH listening position associated with receiving the DCI communication during a second time period after the first time period; and listening at the first PDCCH listening position and the second PDCCH listening position based at least in part on the indication.

[0016] In some aspects, a UE for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: receive an indication associated with receiving a DCI communication, the indication identifying: a first PDCCH listening position associated with receiving the DCI communication during a first time period, and a second PDCCH listening position associated with receiving the DCI communication during a second time period after the first time period; and listen at least in part at the first PDCCH listening position and the second PDCCH listening position based on the indication.

[0017] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a UE, the one or more instructions may cause the one or more processors to: receive an indication associated with receiving a DCI communication, the indication identifying: a first PDCCH listening position associated with receiving the DCI communication during a first time period, and a second PDCCH listening position associated with receiving the DCI communication during a second time period after the first time period; and listen at least in part at the first PDCCH listening position and the second PDCCH listening position based on the indication.

[0018] In some aspects, an apparatus for wireless communication may include: a component for receiving an indication associated with receiving a DCI communication, the indication identifying: a first PDCCH listening position associated with receiving the DCI communication during a first time period, and a second PDCCH listening position associated with receiving the DCI communication during a second time period after the first time period; and a component for listening at the first PDCCH listening position and the second PDCCH listening position based at least in part on the indication.

[0019] In some aspects, a wireless communication method performed by a base station may include: sending an indication associated with sending a DCI communication, the indication identifying: a first PDCCH listening position associated with the DCI communication to be sent during a first time period, and a second PDCCH listening position associated with the DCI communication to be sent during a second time period after the first time period; and after sending the indication, sending the DCI communication at at least one of the first PDCCH listening position or the second PDCCH listening position.

[0020] In some aspects, a base station for wireless communication may include a memory and one or more processors operably coupled to the memory. The memory and the one or more processors may be configured to: send an indication associated with sending a DCI communication, the indication identifying: a first PDCCH listening position associated with the DCI communication to be sent during a first time period, and a second PDCCH listening position associated with the DCI communication to be sent during a second time period after the first time period; and after sending the indication, send the DCI communication in at least one of the first PDCCH listening position or the second PDCCH listening position.

[0021] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a base station, the one or more instructions may cause the one or more processors to: send an indication associated with sending a DCI communication, the indication identifying: a first PDCCH listening position associated with the DCI communication to be sent during a first time period, and a second PDCCH listening position associated with the DCI communication to be sent during a second time period after the first time period; and after sending the indication, send the DCI communication in at least one of the first PDCCH listening position or the second PDCCH listening position.

[0022] In some aspects, an apparatus for wireless communication may include: a component for sending an indication associated with sending a DCI communication, the indication identifying: a first PDCCH listening position associated with the DCI communication to be sent during a first time period, and a second PDCCH listening position associated with the DCI communication to be sent during a second time period after the first time period; and a component for sending the DCI communication at at least one of the first PDCCH listening position or the second PDCCH listening position after sending the indication.

[0023] Aspects generally include a method, apparatus, system, computer program product, non-transitory computer readable medium, user equipment, base station, wireless communication device, and processing system as generally described herein with reference to and as illustrated in the accompanying drawings and description.

[0024] The foregoing has outlined rather broadly the features and technical advantages of examples according to the present disclosure so that the following detailed description may be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples may be easily used as a basis for modifying or designing other structures for achieving the same purpose of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The features of the concepts disclosed herein, their organization and methods of operation, and related advantages may be better understood through the following description when considered in conjunction with the accompanying drawings. Each of the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations to the claims. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order that the above-mentioned features of the present disclosure may be understood in detail, the contents briefly summarized above may be described in more detail by reference to various aspects, some of which are shown in the accompanying drawings. However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and therefore should not be considered as limiting the scope thereof, as the description may allow for other equivalent aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0026] Figure 1 is a block diagram conceptually illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.

[0027] Figure 2 is a block diagram conceptually illustrating an example of a base station communicating with a UE in a wireless communication network according to various aspects of the present disclosure.

[0028] Figure 3 is a diagram illustrating an example of downlink (DL)-centric time slots according to various aspects of the present disclosure.

[0029] Figure 4 is a diagram illustrating an example of uplink (UL)-centric time slots according to various aspects of the present disclosure.

[0030] FIG. 5A to FIG. 5C is a diagram illustrating an example of dynamic indication of PDCCH listening locations according to various aspects of the present disclosure.

[0031] Figure 6 is a diagram illustrating an exemplary process, for example, performed by a user equipment, according to various aspects of the present disclosure.

[0032] Figure 7is a diagram illustrating an exemplary process, for example, performed by a base station, according to various aspects of the present disclosure.

[0033] Fig. 8A and Figure 8B is a diagram illustrating an example of dynamic indication of PDCCH listening locations according to various aspects of the present disclosure.

[0034] Fig. 9 is a diagram illustrating an exemplary process, for example, performed by a user equipment, according to various aspects of the present disclosure.

[0035] Fig.10 is a diagram illustrating an exemplary process, for example, performed by a base station, according to various aspects of the present disclosure. DETAILED DESCRIPTION

[0036] 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 presented throughout the present disclosure. On the contrary, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of the present disclosure will be fully conveyed to those skilled in the art. Based on the teachings herein, it should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether the aspect of the present disclosure is implemented independently of any other aspect of the present disclosure or implemented 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 a device or method, that is, the device or method is practiced using other structures, functions, or structures and functions other than the various aspects of the present disclosure set forth herein or different from 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.

[0037] 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 and / or the like (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether these elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0038] It should be noted that although terms commonly associated with 3G and / or 4G wireless technologies may be used herein to describe various aspects, various aspects of the present disclosure may be applied to other generation-based communication systems including NR technology, such as 5G and beyond.

[0039] Figure 1is a diagram showing a wireless network 100 in which various aspects of the present disclosure may be practiced. The wireless 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 a plurality of BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 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, NRBS, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to a coverage area of ​​a BS and / or a BS subsystem serving that coverage area, depending on the context in which the term is used.

[0040] A BS may provide communication coverage for macro cells, pico cells, femto cells, and / or other types of cells. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access to UEs with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access to UEs with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access to 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, 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", "Node B", "5G NB", and "cell" may be used interchangeably herein.

[0041] In some aspects, the cell may not necessarily be fixed, 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 with each other and / or with one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces (such as direct physical connections, virtual networks, etc.) using any suitable transport network.

[0042] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and transmit the data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that can relay transmissions of other UEs. Figure 1 In the example shown, a relay station 110d may communicate with the macro BS 110a and the 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.

[0043] The wireless network 100 may be a heterogeneous network including different types of BSs, such as 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 higher transmit power level (e.g., 5 watts 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 watt to 2 watts).

[0044] The network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly, for example, via a wireless or wired backhaul.

[0045] UE 120 (e.g., 120a, 120b, 120c) may be dispersed throughout the wireless network 100, and each UE may be fixed 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 computer, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or instrument, 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 satellite radio, etc.), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.

[0046] Some UEs may be considered machine type communication (MTC) 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. that can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide, for example, a connection to or to a network (e.g., a wide area network such as the Internet or a cellular network) via a wired or wireless communication link. Some UEs may be considered Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered customer premises 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.).

[0047] Generally, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific RAT and can operate on one or more frequencies. RAT can also be referred to as radio technology, air interface, etc. Frequency can also be referred to as carrier, channel, etc. Each frequency can 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 can be deployed.

[0048] 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.

[0049] As pointed out above, Figure 1 are provided as examples. Other examples may be related to Figure 1 Different than described.

[0050] 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 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.

[0051] 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) 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)). If applicable, the transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, and can provide T output symbol streams to T modulators (MOD) 232a to 232t. Each modulator 232 can process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 can 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 can be transmitted via T antennas 234a to 234t, respectively. According to various aspects described in more detail below, position coding can be used to generate synchronization signals to convey additional information.

[0052] At the UE 120, antennas 252a to 252r may receive downlink signals from the base station 110 and / or other base stations, and may provide received signals to demodulators (DEMODs) 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. The MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for the UE 120 to the data sink 260, and provide decoded control information and system information to the 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.

[0053] 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 and other UEs may be received by antennas 234, processed by demodulators 232, detected by MIMO detectors 236 (if applicable), and further processed by receive processors 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to the 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.

[0054] 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 of the can perform or direct e.g. Figure 6 The process of 600 Figure 7 The process 700 Fig. 9 The process of 900 Fig.10 The operations of process 1000 and / or other processes described herein may be performed. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, when executed by one or more processors of base station 110 and / or UE 120, the one or more instructions may perform or direct, for example, Figure 6 The process of 600 Figure 7 The process 700 Fig. 9 The process of 900 Fig.10 The operations of process 1000 and / or other processes described herein may be performed. Scheduler 246 may schedule UEs to transmit data on the downlink and / or uplink.

[0055] In some aspects, the UE 120 may include: means for receiving an indication identifying a PDCCH listening location associated with receiving a next DCI communication; means for listening at the PDCCH listening location based at least in part on the indication, wherein the indication is valid at least until the PDCCH listening location and is independent of an amount of time between receiving the indication and listening at the PDCCH listening location; etc. In some aspects, such means may include in conjunction with Figure 2 One or more components of the UE 120 are depicted, such as a controller / processor 280, a transmit processor 264, a TX MIMO processor 266, a MOD 254, an antenna 252, a DEMOD 254, a MIMO detector 256, a receive processor 258, and the like.

[0056] In some aspects, UE 120 may include: a component for receiving an indication associated with receiving a DCI communication, the indication identifying: a first PDCCH listening position associated with receiving the DCI communication during a first time period, and a second PDCCH listening position associated with receiving the DCI communication during a second time period after the first time period; a component for listening at the first PDCCH listening position and the second PDCCH listening position based at least in part on the indication; and so on. In some aspects, such components may include combining Figure 2One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, etc.

[0057] In some aspects, the base station 110 may include: means for sending an indication identifying a PDCCH listening position associated with sending a next DCI communication, wherein the indication is valid at least until the PDCCH listening position and regardless of the amount of time between receiving the indication and listening at the PDCCH listening position; means for sending the next DCI communication after sending the indication; and so on. In some aspects, such means may include in conjunction with Figure 2 One or more components of base station 110 are depicted, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and the like.

[0058] In some aspects, the base station 110 may include: a component for sending an indication associated with sending a DCI communication, the indication identifying: a first PDCCH listening position associated with a DCI communication to be sent during a first time period, and a second PDCCH listening position associated with a DCI communication to be sent during a second time period after the first time period; a component for sending the DCI communication in at least one of the first PDCCH listening position or the second PDCCH listening position after sending the indication; and so on. In some aspects, such components may include in conjunction with Figure 2 One or more components of base station 110 are depicted, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and the like.

[0059] As pointed out above, Figure 2 are provided as examples. Other examples may be related to Figure 2 Different than described.

[0060] Figure 3300 is a diagram illustrating an example of a DL-centric time slot or wireless communication structure. The DL-centric time slot may include a control portion 302. The control portion 302 may be present in an initial or beginning portion of the DL-centric time slot. The control portion 302 may include various scheduling information and / or control information corresponding to various portions of the DL-centric time slot. In some configurations, the control portion 302 may be a physical DL control channel (PDCCH), such as Figure 3 In some aspects, the control portion 302 may include legacy PDCCH information, shortened PDCCH (sPDCCH) information, a control format indicator (CFI) value (e.g., carried on a physical control format indicator channel (PCFICH)), one or more grants (e.g., downlink grants, uplink grants, etc.), and / or the like.

[0061] The DL-centric time slot may also include a DL data portion 304. The DL data portion 304 may sometimes be referred to as a payload of the DL-centric time slot. The DL data portion 304 may include communication resources for transmitting DL data from a scheduling entity (e.g., a UE or BS) to a subordinate entity (e.g., a UE). In some configurations, the DL data portion 304 may be a physical DL shared channel (PDSCH).

[0062] The DL-centric time slot may also include a UL short burst portion 306. The UL short burst portion 306 may sometimes be referred to as a UL burst, a UL burst portion, a common UL burst, a short burst, a UL short burst, a common UL short burst, a common UL short burst portion, and / or various other suitable terms. In some aspects, the UL short burst portion 306 may include one or more reference signals. Additionally or alternatively, the UL short burst portion 306 may include feedback information corresponding to various other portions of the DL-centric time slot. For example, the UL short burst portion 306 may include feedback information corresponding to the control portion 302 and / or the data portion 304. Non-limiting examples of information that may be included in the UL short burst portion 306 include an ACK signal (e.g., a physical uplink control channel (PUCCH) ACK, a physical uplink shared channel (PUSCH) ACK, an immediate ACK), a NACK signal (e.g., a PUCCH NACK, a PUSCH NACK, an immediate NACK), a scheduling request (SR), a buffer status report (BSR), a hybrid automatic repeat request (HARQ) indicator, a channel state indication (CSI), a channel quality indicator (CQI), a sounding reference signal (SRS), a demodulation reference signal (DMRS), PUSCH data, and / or various other suitable types of information. The UL short burst portion 306 may include additional or alternative information, such as information related to a random access channel (RACH) procedure, a scheduling request, and various other suitable types of information.

[0063] like Figure 3 As shown, the end of the DL data portion 304 can be separated in time from the beginning of the UL short burst portion 306. This time separation may sometimes be referred to as a gap, a guard period, a guard interval, and / or various other suitable terms. This separation provides time for switching from DL communications (e.g., receiving operations of a slave entity (e.g., UE)) to UL communications (e.g., transmissions of a slave entity (e.g., UE)). The foregoing is an example of a DL-centric wireless communication structure, and there may be alternative structures with similar features without departing from the aspects described herein.

[0064] As pointed out above, Figure 3 are provided as examples. Other examples may be related to Figure 3 Different than described.

[0065] Figure 4 4 is a diagram illustrating an example of a UL-centric timeslot or wireless communication structure. The UL-centric timeslot may include a control portion 402. The control portion 402 may be present in an initial or beginning portion of the UL-centric timeslot. Figure 4 The control portion 402 in the above reference may be similar to Figure 3 The control portion 302 described. The UL-centric time slot may also include a UL long burst portion 404. The UL long burst portion 404 may sometimes be referred to as the payload of the UL-centric time slot. The UL portion may refer to communication resources used to transmit UL data from a subordinate entity (e.g., a UE) to a scheduling entity (e.g., a UE or a BS). In some configurations, the control portion 402 may be a physical DL control channel (PDCCH).

[0066] like Figure 4 As shown, the end of the control portion 402 can be separated in time from the beginning of the UL long burst portion 404. This time separation may sometimes be referred to as a gap, a guard period, a guard interval, and / or various other suitable terms. This separation provides time for switching from DL communication (e.g., receiving operation of the scheduling entity) to UL communication (e.g., transmission of the scheduling entity).

[0067] The UL-centric timeslot may also include a UL short burst portion 406 . Figure 4 The UL short burst portion 406 in the embodiment may be similar to the above reference Figure 3 The UL short burst portion 306 described above may include the above combination Figure 3 The foregoing is merely one example of a UL-centric wireless communication structure, and alternative structures with similar features may exist without departing from the aspects described herein.

[0068] In some cases, two or more slave entities (e.g., UEs) may communicate with each other using sidelink signals. Practical applications of such sidelink communications may include public safety, proximity services, UE-to-network relay, vehicle-to-vehicle (V2V) communications, Internet of Everything (IoE) communications, Internet of Things communications, mission-critical grids, and / or various other suitable applications. Generally, a sidelink signal may refer to a signal transmitted from one slave entity (e.g., UE1) to another slave entity (e.g., UE2) without relaying the communication through a scheduling entity (e.g., UE or BS), even if the scheduling entity may be used for scheduling and / or control purposes. In some aspects, licensed spectrum may be used to transmit sidelink signals (unlike wireless local area networks that typically use unlicensed spectrum).

[0069] In one example, a wireless communication structure such as a frame may include both UL-centric time slots and DL-centric time slots. In this example, the ratio of UL-centric time slots to DL-centric time slots in a frame may be dynamically adjusted based at least in part on the amount of UL data and the amount of DL data sent. For example, if there is more UL data, the ratio of UL-centric time slots to DL-centric time slots may be increased. Conversely, if there is more DL data, the ratio of UL-centric time slots to DL-centric time slots may be reduced.

[0070] As pointed out above, Figure 4 are provided as examples. Other examples may be related to Figure 4 Different than described.

[0071] In a wireless communication system such as an NR system, a downlink control information (DCI) communication may include control information such as information associated with resource allocation (e.g., a set of resources to be used for a downlink shared channel, a set of resources to be used for an uplink shared channel, etc.), a transmission format, and / or one or more other items of control information. Such a DCI communication is carried in a physical downlink control channel (PDCCH), which is transmitted in one or more control resource sets (CORESET).

[0072] A UE (e.g., UE 120) may be configured to monitor the PDCCH so that the UE may detect DCI communications intended for the UE. In a typical communication scenario, the UE performs a blind search for DCI communications in each time slot (e.g., by attempting to decode the PDCCH in one or more CORESETs). However, this so-called blind decoding may result in power waste at the UE. For example, in the typical communication scenario described above, in the absence of any scheduling grant for the UE, the UE monitoring the PDCCH may consume more than 40% of the total UE power.

[0073] Even in cases where it is not obvious that the UE needs to frequently listen to DCI communications, such as when the UE is configured with semi-persistent scheduling (SPS) or configuration grants, power consumption issues still exist. For example, the UE may need to listen to DCI communications associated with activating SPS / configuration grants. As another example, a UE configured with SPS / configuration grants may need to listen to DCI communications after a beam quality problem causes the UE to be unable to receive downlink communications (e.g., physical downlink shared channel (PDSCH) communications). Here, after failing to receive (e.g., failing to decode) downlink communications, the UE may send a negative acknowledgement (NACK) indicating a beam quality problem. After sending the NACK, the UE may listen (within one or more CORESETs) for DCI communications associated with initiating beam scanning for beam reselection / adaptation and downlink communication retransmissions. This problem is particularly prevalent when operating in high frequency ranges, such as frequency range 2 (FR2), because beam quality issues are more likely to occur in high frequency ranges. Therefore, listening to DCI communications may result in wasting UE power, even in cases where it is not obvious that the UE needs to frequently listen to DCI communications.

[0074] One technique for solving the power consumption problem caused by monitoring DCI communications is to allow the base station to signal the location of the PDCCH that can carry the DCI communication of a given UE (referred to herein as the PDCCH listening location). According to this technique, the PDCCH listening location is valid for a specific number of time slots, after which the signaled PDCCH listening location expires. Here, the content of the DCI communication in terms of resource block allocation can be different between the occurrences of the signaled PDCCH listening location, and the beam used for the DCI communication can be different between the occurrences of the signaled PDCCH listening location. However, this technique limits the flexibility associated with receiving and sending DCI communications. For example, from the perspective of the UE, the lack of flexibility means that the UE must always search for the same PDCCH listening location on the same part of the bandwidth (for example, even if the UE is using another part of the bandwidth to send or receive other communications). As another example, from the perspective of the base station, the base station must reserve resources for the signaled PDCCH listening opportunity for the time period during which the signaled PDCCH listening opportunity is valid, which reduces resource utilization and / or efficiency of use.

[0075] Some aspects of the present invention provide techniques and apparatus for dynamic indication of PDCCH listening positions. In some aspects, a base station can send and a UE can receive an indication identifying a PDCCH listening position associated with a next DCI communication. In some aspects, the indication can be valid at least until the PDCCH listening position, regardless of the amount of time between receiving the indication and listening at the PDCCH listening position. FIG. 5A to FIG. 5C , Figure 6 and Figure 7 Provide additional details relevant to the technology.

[0076] Alternatively, in some aspects, the base station may send, and the UE may receive, an indication that identifies a first PDCCH listening position associated with receiving DCI communications during a first time period, and a second PDCCH listening position associated with receiving DCI communications during a second time period (e.g., a time period after the first time period). Fig. 8A , Figure 8B , Fig. 9 and Fig.10 Additional details related to the technology are provided.

[0077] Figure 5A , Figure 5B and Figure 5C are diagrams illustrating examples 500 , 520 , and 560 , respectively, of dynamic indication of PDCCH listening locations according to various aspects of the present disclosure.

[0078] like Figure 5A As shown in the reference numeral 505 in FIG, a base station (e.g., base station 110) may send an indication to a UE (e.g., UE 120) identifying a PDCCH listening position associated with a next DCI communication. In other words, the base station may send an indication identifying a PDCCH listening position associated with receiving the next DCI communication to be listened to by the UE. In some aspects, the indication is valid at least until the PDCCH listening position, regardless of the amount of time between the time of the indication and the time of the PDCCH listening position. In other words, the validity of the indicated PDCCH listening position is not defined by a specific time period (i.e., the indicated PDCCH listening position does not expire after a specific time period). Instead, the indication may be valid at least until the next occurrence of the PDCCH listening position.

[0079] In some aspects, the indication identifying the PDCCH listening position may include one or more parameters defining the PDCCH listening position. For example, the indication may include information identifying the position of the PDCCH listening position in the frequency domain and / or information identifying the position of the PDCCH listening position in the time domain. As another example, the indication may include information identifying the search space where the PDCCH listening position is located. As another example, the indication may include information identifying the CORESET where the PDCCH listening position is located. As another example, the indication may include information identifying the period and / or offset defining the PDCCH listening position. As another example, the indication may include information identifying the duration of the PDCCH listening position. As another example, the indication may include information identifying the number of symbols associated with the PDCCH listening position (e.g., the number of symbols to be monitored). As another example, the indication may include information identifying the number of PDCCH candidates.

[0080] In some aspects, the indication identifying the PDCCH listening position may be associated with at least one subsequent DCI communication after the next DCI communication. That is, in some aspects, the indication may identify multiple PDCCH listening positions, each PDCCH listening position being associated with a corresponding one of multiple next DCI communications. In summary, the indication may identify N (N≥1) PDCCH listening positions, each PDCCH listening position being associated with a corresponding one of the next N DCI communications.

[0081] In some aspects, the base station may send the indication in a DCI communication (e.g., in a DCI communication sent at a previously indicated PDCCH listening position). In some aspects, the base station may send the indication via radio resource control (RRC) signaling. In some aspects, the base station may send the indication in a medium access control (MAC) control element (CE). In this case, the MAC CE may identify a single logical channel identifier and a single PDCCH listening position, or may identify multiple logical channel identifiers and corresponding multiple PDCCH listening positions.

[0082] As further indicated by reference numeral 505, the UE may receive an indication identifying a PDCCH listening position. The following describes exemplary operations for a scenario in which the UE receives an indication, followed by exemplary operations for a scenario in which the UE does not receive an indication.

[0083] In some aspects, the UE may receive the indication in a DCI communication, via RRC signaling, or in a MAC CE, as described above.

[0084] In some aspects, the UE may send an acknowledgment (ACK) indicating that the indication has been received. As an example, if the indication is carried in a DCI communication and the DCI communication is sent together with a PDSCH communication, the UE may attempt to decode the DCI communication and the PDSCH communication. Here, if the UE successfully decodes the DCI communication and the PDSCH communication, the UE may send (e.g., in the PUCCH) an ACK indicating that the UE has received the indication and the PDSCH communication. Conversely, in some aspects, the UE may send a negative ACK (NACK) indicating that the indication has been received. As an example, if the indication is carried in a DCI communication and the DCI communication is sent together with the PDSCH communication, the UE may attempt to decode the DCI communication and the PDSCH communication. Here, if the UE successfully decodes the DCI communication but does not successfully decode the PDSCH communication, the UE may send (e.g., in the PUCCH) a NACK indicating that the UE has received the indication but has not received the PDSCH communication. Therefore, in some aspects, the base station may receive an ACK or NACK indicating that the UE has received the indication.

[0085] As indicated by reference numeral 510, the base station may send the next DCI communication after sending the indication. In some aspects, the base station may send the next DCI communication at the indicated PDCCH listening position. For example, as described above, the UE may receive the indication and may send an ACK or NACK to the base station indicating that the UE received the indication. Here, the base station may send the next DCI communication at the PDCCH listening position based at least in part on the ACK or NACK indicating that the indication was received.

[0086] In some aspects, the UE may monitor the PDCCH listening locations based at least in part on the indication, as indicated by reference numeral 515. For example, after receiving the indication, the UE may monitor the PDCCH listening locations identified to be associated with receiving the next DCI communication.

[0087] In some aspects, the UE may receive the next DCI communication based at least in part on listening at a PDCCH listening position. In some aspects, the next DCI communication may include another indication identifying another PDCCH listening position associated with sending a subsequent DCI communication. That is, the base station may indicate another PDCCH listening position associated with a subsequent DCI communication to be received by the UE (e.g., a DCI communication after the next DCI communication previously sent / received). Here, the UE may listen at other PDCCH listening positions based at least in part on other indications. In this way, the indication of the PDCCH listening position can be repeated over time, which allows the PDCCH listening position to be dynamically indicated to the UE, thereby providing flexibility in terms of the PDCCH listening position while also reducing the power consumption of the UE.

[0088] In some aspects, the UE may send an ACK or NACK indicating that the next DCI communication has been received. As an example, the next DCI communication may be sent together with a PDSCH communication, and the UE may attempt to decode the next DCI communication and the PDSCH communication. Here, if the UE successfully decodes the next DCI communication and the PDSCH communication, the UE may send (e.g., in the PUCCH) an ACK indicating that the UE has received the next DCI communication and the PDSCH communication. Conversely, if the UE successfully decodes the next DCI communication but does not successfully decode the PDSCH communication, the UE may send (e.g., in the PUCCH) an NACK indicating that the UE has received the next DCI communication but has not received the PDSCH communication. Therefore, in some aspects, the base station may receive an ACK or NACK indicating that the UE has received the next DCI communication.

[0089] In some aspects, the UE may fail to receive the next DCI communication based at least in part on listening at the PDCCH listening position, and may send a NACK indicating that the next DCI communication was not received. For example, if the UE does not successfully decode the next DCI communication, the UE may send (e.g., in the PUCCH) a NACK indicating that the UE failed to receive the next DCI communication. Thus, in some aspects, the base station may receive a NACK indicating that the UE did not receive the next DCI communication.

[0090] In some aspects, based at least in part on the failure to receive the next DCI communication, the UE may listen at a PDCCH listening position associated with receiving a subsequent DCI communication (e.g., a DCI communication after the next DCI communication). For example, upon failure to receive the next DCI communication, the UE may send a NACK indicating that the next DCI communication has not been received. Here, the UE may be configured to listen at a previously indicated PDCCH listening position (e.g., a PDCCH listening position that is the same as the PDCCH listening position that the UE listened to for the next DCI communication that was not received). In some aspects, the base station may be configured to send a subsequent DCI communication at a PDCCH listening position based at least in part on the receipt of a NACK indicating that the next DCI communication was not received. In other words, in some aspects, when the UE does not receive the next DCI communication, the previously indicated PDCCH listening position may be reused for subsequent DCI communications.

[0091] In some aspects, based at least in part on a failure to receive a next DCI communication, the UE may monitor multiple PDCCH listening positions associated with receiving a subsequent DCI communication (e.g., a DCI communication after the next DCI communication). For example, upon failure to receive the next DCI communication, the UE may send a NACK indicating that the next DCI communication was not received. Here, the UE may be configured to monitor multiple PDCCH listening positions (e.g., multiple PDCCH listening positions configured for the UE as candidates for carrying a PDCCH for the UE). In some aspects, the base station may be configured to send a subsequent DCI communication at one of the multiple PDCCH listening positions based at least in part on receiving a NACK indicating that the next DCI communication was not received.

[0092] In some aspects, the base station may not receive an indication of whether the next DCI communication is received. For example, this may be the case when the UE does not send an ACK or NACK, or when the ACK or NACK sent by the UE is not received by the base station (e.g., due to beam quality issues). In some aspects, the base station may be configured to send subsequent DCI communications at a PDCCH listening position based at least in part on not receiving an indication of whether the next DCI communication is received. In other words, in some aspects, when the base station does not receive any indication as to whether the UE has received the next DCI communication, the previously indicated PDCCH listening position may be reused for subsequent DCI communications. Alternatively, the base station may be configured to send subsequent DCI at one of a plurality of PDCCH listening positions based at least in part on not receiving an indication of whether the next DCI communication is received.

[0093] Figure 5B A diagram illustrating an exemplary sequence of operations associated with dynamic indication of PDCCH listening locations.

[0094] As shown in reference numeral 522, the base station uses the first beam (at Figure 5B As shown in reference numeral 524, the first DCI communication includes an indication of a PDCCH listening position associated with a second DCI communication (i.e., a next DCI communication associated with the UE). As shown in reference numeral 526, the UE receives the first DCI communication and the first PDSCH communication, and sends an ACK to the base station indicating that the UE received the first DCI communication and the first PDSCH communication.

[0095] As shown in reference numeral 528, the base station sends a second DCI communication and a second PDSCH communication to the UE using the first beam. Here, the base station sends the second DCI communication at the PDCCH listening position indicated by the first DCI communication. The UE listens to the PDCCH listening position indicated by the first DCI communication and receives the second DCI communication accordingly. As shown in reference numeral 530, the second DCI communication includes an indication of the PDCCH listening position associated with the third DCI communication (i.e., the next DCI communication associated with the UE). Here, the UE also receives the second PDSCH communication. Next, as shown in reference numeral 532, the UE sends an ACK to the base station indicating that the UE has received the second DCI communication and the second PDSCH communication.

[0096] As shown in reference numeral 534, the base station sends a third DCI communication and a third PDSCH communication to the UE using the first beam. Here, the base station sends the third DCI communication at the PDCCH listening position indicated by the second DCI communication. The UE listens to the PDCCH listening position indicated by the second DCI communication and receives the second DCI communication accordingly. As shown in reference numeral 536, the third DCI communication includes an indication of the PDCCH listening position associated with the fourth DCI communication (i.e., the next DCI communication associated with the UE). However, in this example, as indicated by reference numeral 537, when the UE receives the third DCI communication, the UE does not receive (e.g., fails to decode) the third PDSCH communication. In this example, the failure to receive the third PDSCH is caused by a beam quality problem. Therefore, as shown in reference numeral 538, the UE sends a NACK to the base station indicating that the third DCI communication is received and that the third PDSCH communication is not received due to a beam quality problem.

[0097] As shown in reference numeral 540, based at least in part on the NACK, the base station and the UE perform a beam reselection process. For example, the base station transmits a channel state information reference signal (CSI-RS) on a beam set (e.g., including a second beam identified as "b", a third beam identified as "c", a fourth beam identified as "d", and a fifth beam identified as "e"). The UE receives the CSI-RS and provides PUCCH communications associated with each beam in the beam set, which is associated with identifying a suitable beam to be used for further communications with the base station. In this example, the fourth beam is selected as the suitable beam.

[0098] After beam reselection, as shown in reference numeral 542, the base station sends a fourth DCI communication and a fourth PDSCH communication (e.g., a retransmission of the third PDSCH) to the UE using a fourth beam. Here, the base station sends the fourth DCI communication at the PDCCH listening position indicated by the third DCI communication. The UE listens to the PDCCH listening position indicated by the third DCI communication and receives the fourth DCI communication accordingly. As shown in reference numeral 544, the fourth DCI communication includes an indication of the PDCCH listening position associated with the fifth DCI communication (i.e., the next DCI communication associated with the UE). It is worth noting that the indication of the PDCCH listening position contained in the third DCI communication is still valid for receiving the fourth DCI communication, even if a beam reselection process is performed between the NACK and the transmission of the fourth DCI communication. In other words, the indication in the third DCI communication is valid at least before the indicated PDCCH listening position, regardless of the amount of time between the indication and the indicated PDCCH listening position (or the execution of other operations). Here, the UE also receives the fourth PDSCH communication. Therefore, as indicated by reference numeral 546, the UE transmits an ACK to the base station indicating that the UE receives the fourth DCI communication and the fourth PDSCH communication.

[0099] As shown in reference numeral 548, after the UE sends the ACK, the UE sends a sounding reference signal (SRS) for the beam set based on which beam reselection is performed. As shown in reference numeral 550, after the SRS is sent, the base station sends the fifth DCI communication and the fifth PDSCH communication to the UE using the fourth beam. Here, the base station sends the fifth DCI communication at the PDCCH listening position indicated by the fourth DCI communication. The UE listens to the PDCCH listening position indicated by the fourth DCI communication and receives the fifth DCI communication accordingly. As shown in reference numeral 552, the fifth DCI communication includes an indication of the PDCCH listening position associated with the sixth DCI communication (i.e., the next DCI communication associated with the UE) (not shown). It is worth noting that the indication of the PDCCH listening position contained in the fourth DCI communication is still valid for receiving the fifth DCI communication, even if the UE sent an SRS between the previous ACK and the base station transmission of the fifth DCI communication. In other words, the indication in the fourth DCI communication is valid at least before the indicated PDCCH listening position, regardless of the amount of time between the indication and the indicated PDCCH listening position (or the execution of other operations). Here, the UE also receives the fifth PDSCH communication. Next, as shown in the reference numeral 554, the UE sends an ACK to the base station indicating the receipt of the fifth DCI communication and the fifth PDSCH communication. Further operations of the base station and the UE can continue in a similar manner.

[0100] In some aspects, the indication identifying the PDCCH listening position may be valid for a specific time period. For example, the indication identifying the PDCCH listening position may be valid for a specific number of time slots, a specific number of milliseconds, etc. In this case, the PDCCH listening position identified by the indication may be the same for all DCI communications arriving in the specific time period.

[0101] Figure 5C A diagram illustrating another exemplary sequence of operations associated with dynamic indication of PDCCH listening locations.

[0102] As shown in reference numeral 562, the base station uses the first beam (at Figure 5C As shown in the figure (marked as "a"), the UE sends a first DCI communication and a first PDSCH communication to the UE. As shown in the reference numeral 564, the first DCI communication includes an indication of the PDCCH listening position. Here, as shown by the dotted arrow associated with the reference numeral 564, the PDCCH listening position is valid within a specific time period (six time slots). That is, in the next six time slots, the PDCCH listening position identified in the indication will be used by the UE in association with receiving the DCI communication. As shown in the reference numeral 566, the UE receives the first DCI communication and the first PDSCH communication, and sends an ACK to the base station indicating that the UE has received the first DCI communication and the first PDSCH communication.

[0103] As indicated by reference numeral 568, the base station sends a second DCI communication and a second PDSCH communication to the UE using the first beam. Here, the base station sends the second DCI communication at the PDCCH listening position indicated by the first DCI communication (for example, since the second DCI communication is sent in the second time slot after the indication, the indication is still valid). The UE monitors the PDCCH listening position indicated by the first DCI communication and receives the second DCI communication and the second PDSCH communication accordingly. Next, as indicated by reference numeral 570, the UE sends an ACK to the base station indicating that the UE has received the second DCI communication and the second PDSCH communication.

[0104] As indicated by reference numeral 572, the base station sends a third DCI communication and a third PDSCH communication to the UE using the first beam. Here, the base station sends the third DCI communication at the PDCCH listening position indicated by the first DCI communication (for example, since the third DCI communication is sent in the fifth time slot since the indication, the indication is still valid). The UE monitors the PDCCH listening position indicated by the first DCI communication, and receives the third DCI communication and the third PDSCH communication accordingly. Next, as indicated by reference numeral 574, the UE sends an ACK to the base station indicating that the UE has received the third DCI communication and the third PDSCH communication.

[0105] As shown in reference numeral 576, the base station sends a fourth DCI communication and a fourth PDSCH communication to the UE using the first beam. Here, the base station sends the fourth DCI communication at the PDCCH listening position indicated by the first DCI communication (for example, since the fourth DCI communication is sent in the sixth time slot since the indication, the indication is still valid). As shown in reference numeral 578, the fourth DCI communication includes an indication of another PDCCH listening position. Here, as indicated by the dotted arrow associated with reference numeral 578, the PDCCH listening position is valid for the next five time slots. That is, in the next five time slots, the PDCCH listening position identified in another indication will be used by the UE in association with receiving the DCI communication. As shown in reference numeral 580, the UE receives the fourth DCI communication and the fourth PDSCH communication, and sends an ACK to the base station indicating that the UE has received the fourth DCI communication and the fourth PDSCH communication.

[0106] As indicated by reference numeral 582, the base station sends the fifth DCI communication and the fifth PDSCH communication to the UE using the first beam. Here, the base station sends the fifth DCI communication at the PDCCH listening position indicated by the fourth DCI communication (for example, since the fourth DCI communication is sent in the second time slot after the indication, the indication is still valid). The UE monitors the PDCCH listening position indicated by the fourth DCI communication and receives the fifth DCI communication and the fifth PDSCH communication accordingly. Next, as indicated by reference numeral 584, the UE sends an ACK to the base station indicating that the UE has received the fifth DCI communication and the fifth PDSCH communication.

[0107] As indicated by reference numeral 586, the base station sends the sixth DCI communication and the sixth PDSCH communication to the UE using the first beam. Here, the base station sends the sixth DCI communication at the PDCCH listening position indicated by the fourth DCI communication (for example, since the sixth DCI communication is sent in the fourth time slot after the indication, the indication is still valid). The UE monitors the PDCCH listening position indicated by the fourth DCI communication and receives the sixth DCI communication and the sixth PDSCH communication accordingly. Next, as indicated by reference numeral 588, the UE sends an ACK to the base station indicating that the UE has received the sixth DCI communication and the sixth PDSCH communication.

[0108] As pointed out above, FIG. 5A to FIG. 5C are provided as examples. Other examples may be related to FIG. 5A to FIG. 5C Different than described.

[0109] Figure 66 is a diagram illustrating an exemplary process 600, performed, for example, by a UE, in accordance with various aspects of the present disclosure. Exemplary process 600 is an example in which a UE (eg, UE 120, etc.) performs operations associated with dynamic indication of PDCCH listening locations.

[0110] like Figure 6 As shown, in some aspects, process 600 may include receiving an indication identifying a PDCCH listening position associated with receiving a next DCI communication (block 610). For example, the UE (e.g., using receive processor 258, controller / processor 280, memory 282, etc.) may receive an indication identifying a PDCCH listening position associated with receiving a next DCI communication, as described above.

[0111] like Figure 6 As further shown, in some aspects, process 600 may include listening at a PDCCH listening location based at least in part on an indication, wherein the indication is valid at least before the PDCCH listening location, regardless of the amount of time between receiving the indication and listening at the PDCCH listening location (block 620). For example, the UE (e.g., using receive processor 258, controller / processor 280, memory 282, etc.) may listen at the PDCCH listening location based at least in part on an indication, as described above. In some aspects, the indication is valid at least before the PDCCH listening location, regardless of the amount of time between receiving the indication and listening at the PDCCH listening location.

[0112] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0113] In a first aspect, an indication identifying a PDCCH listening location includes information associated with at least one of a frequency domain location, a time domain location, a search space identifier, a CORESET identifier, a period, an offset, a duration, a number of symbols to be listened to, or a number of PDCCH candidates.

[0114] In a second aspect, alone or in combination with the first aspect, the indication identifying the PDCCH listening location is further associated with receiving at least one subsequent DCI communication after the next DCI communication.

[0115] In a third aspect, alone or in combination with one or more of the first and second aspects, the indication is received in a DCI.

[0116] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the indication is received via RRC signaling.

[0117] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the indication is received in a MAC CE.

[0118] In a sixth aspect, in combination with the fifth aspect, a MAC CE identifies a single logical channel identifier and a single PDCCH monitoring position.

[0119] In a seventh aspect, in combination with the fifth aspect, the MAC CE identifies multiple logical channel identifiers and corresponding multiple PDCCH monitoring positions.

[0120] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, process 600 includes sending an ACK or a NACK indicating receipt of the indication.

[0121] In a ninth aspect, either alone or in combination with one or more of aspects one to eight, process 600 comprises receiving a next DCI communication based at least in part on listening at a PDCCH listening location, wherein the next DCI communication comprises another indication identifying another PDCCH listening location associated with receiving a subsequent DCI communication; and listening at another PDCCH listening location based at least in part on the other indication.

[0122] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, process 600 includes receiving a next DCI communication based at least in part on listening at a PDCCH listening location; and sending an ACK or NACK indicating receipt of the next DCI communication.

[0123] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, process 600 includes failing to receive a next DCI communication based at least in part on listening at a PDCCH listening location; and sending a NACK indicating that the next DCI communication was not received.

[0124] In a twelfth aspect, in combination with the eleventh aspect, process 600 includes monitoring at a PDCCH monitoring location associated with receiving a subsequent DCI communication based at least in part on a failure to receive the next DCI communication.

[0125] In a thirteenth aspect, alone or in combination with one or more of the eleventh and twelfth aspects, process 600 includes monitoring at a plurality of PDCCH monitoring locations associated with receiving a subsequent DCI communication based at least in part on a failure to receive a next DCI communication.

[0126] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the indication identifying the PDCCH monitoring position is valid within a specific time period.

[0127] although Figure 6 Example blocks of process 600 are shown, but in some aspects, Figure 6 Process 600 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks compared to the blocks depicted in. Additionally or alternatively, two or more of the blocks in process 600 may be performed in parallel.

[0128] Figure 7 is a diagram illustrating an exemplary process 700, performed, for example, by a base station, in accordance with various aspects of the present disclosure. Exemplary process 700 is an example of operations in which a base station (eg, base station 110, etc.) performs operations associated with dynamic indication of PDCCH listening locations.

[0129] like Figure 7 As shown, in some aspects, process 700 may include sending an indication identifying a PDCCH listening position associated with sending a next DCI communication, wherein the indication is valid at least until the PDCCH listening position, regardless of the amount of time between receiving the indication and listening at the PDCCH listening position (block 710). For example, a base station (e.g., using transmit processor 220, controller / processor 240, memory 242, etc.) may send an indication identifying a PDCCH listening position associated with sending a next DCI communication, as described above. In some aspects, the indication is valid at least until the PDCCH listening position, regardless of the amount of time between receiving the indication and listening at the PDCCH listening position.

[0130] like Figure 7 As further shown in FIG. 7 , in some aspects, process 700 may include sending a next DCI communication after sending the indication (block 720). For example, the base station (e.g., using transmit processor 220, controller / processor 240, memory 242, etc.) may send the next DCI communication after sending the indication, as described above.

[0131] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0132] In a first aspect, the indication identifying the PDCCH monitoring position includes information identifying at least one of a frequency domain position, a time domain position, a search space identifier, a CORESET identifier, a period, an offset, a duration, a number of symbols to be monitored, or a number of PDCCH candidates.

[0133] In a second aspect, alone or in combination with the first aspect, the indication identifying the PDCCH listening location is further associated with sending at least one subsequent DCI communication after the next DCI communication.

[0134] In a third aspect, alone or in combination with one or more of the first and second aspects, the indication is sent in a DCI.

[0135] In a fourth aspect, the indication is sent via RRC signaling, alone or in combination with one or more of the first to third aspects.

[0136] In the fifth aspect, alone or in combination with one or more of the first to fourth aspects, the indication is sent in a MAC CE.

[0137] In a sixth aspect, in combination with the fifth aspect, a MAC CE identifies a single logical channel identifier and a single PDCCH monitoring position.

[0138] In a seventh aspect, in combination with the fifth aspect, the MAC CE identifies multiple logical channel identifiers and corresponding multiple PDCCH monitoring positions.

[0139] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, process 700 includes receiving an ACK or a NACK indicating receipt of the indication.

[0140] In a ninth aspect, in combination with the eighth aspect, a next DCI communication is sent at the PDCCH listening position based at least in part on an ACK or NACK indicating receipt of the indication.

[0141] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the next DCI communication includes another indication identifying another PDCCH listening position associated with sending the subsequent DCI communication.

[0142] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, process 700 includes receiving an ACK or NACK indicating receipt of a next DCI communication.

[0143] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the process 700 includes receiving a NACK indicating that a next DCI communication was not received.

[0144] In a thirteenth aspect, in combination with the twelfth aspect, process 700 includes sending a subsequent DCI communication at a PDCCH listening location based at least in part on the NACK.

[0145] In a fourteenth aspect, in combination with the twelfth aspect, process 700 includes sending a subsequent DCI communication based at least in part on the NACK in one of a plurality of PDCCH listening locations.

[0146] In the fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, process 700 includes not receiving an indication of whether a next DCI communication is received; and sending a subsequent DCI at a PDCCH listening position based at least in part on not receiving an indication of whether a next DCI communication is received.

[0147] In the sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, process 700 includes not receiving an indication of whether a next DCI communication is received; and sending a subsequent DCI in one of a plurality of PDCCH listening positions based at least in part on not receiving an indication of whether a next DCI communication is received.

[0148] although Figure 7 Example blocks of process 700 are shown, but in some aspects, Figure 7 Process 700 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks compared to the blocks depicted in. Additionally or alternatively, two or more of the blocks in process 700 may be performed in parallel.

[0149] Fig. 8A and Figure 8B are diagrams illustrating examples 800 and 830 , respectively, of dynamic indication of PDCCH listening locations in accordance with various aspects of the present disclosure.

[0150] like Fig. 8A As shown in the reference numeral 805 in , a base station (e.g., base station 110) may send an indication to a UE (e.g., UE 120) identifying a PDCCH listening position for an upcoming set of time periods. For example, the indication may identify a first PDCCH listening position associated with a DCI communication to be sent during a first time period, and a second PDCCH listening position associated with a DCI communication to be sent during a second time period after the first time period. As a specific example, the indication may identify a first PDCCH listening position associated with a DCI communication to be sent / received during a first set of J (J≥1) time slots, a second PDCCH listening position associated with a DCI communication to be sent / received in a second set of J time slots, and so on. In other words, the base station may send an indication identifying a PDCCH listening position associated with receiving a DCI communication to be listened to by the UE in each time period in a set of upcoming time periods.

[0151] In some aspects, for a given PDCCH listening position, the indication may include one or more parameters defining the PDCCH listening position. For example, the indication may include information identifying the position of the PDCCH listening position in the frequency domain and / or information identifying the position of the PDCCH listening position in the time domain. As another example, the indication may include information identifying the search space where the PDCCH listening position is located. As another example, the indication may include information identifying the CORESET where the PDCCH listening position is located. As another example, the indication may include information identifying the period and / or offset defining the PDCCH listening position. As another example, the indication may include information identifying the duration of the PDCCH listening position. As another example, the indication may include information identifying the number of symbols associated with the PDCCH listening position (e.g., the number of symbols to be monitored). As another example, the indication may include information identifying the number of PDCCH candidates.

[0152] In some aspects, the two or more PDCCH listening positions identified by the indication may be different between time periods associated with the indication. For example, a first PDCCH listening position associated with receiving DCI communications during a first time period may be different from a second PDCCH listening position associated with receiving DCI communications during a second time period. In some aspects, the two or more PDCCH listening positions identified by the indication may be the same across time periods. Continuing with the above example, a third PDCCH listening position associated with receiving DCI communications during a third time period (e.g., a time period after the second time period) may be the same as the first PDCCH listening position associated with receiving DCI communications during the first time period.

[0153] In some aspects, the indication may identify the number of time periods during which the indication is valid (denoted as L, where L≥1), and the number of time slots in each time period (denoted as J). In this case, the total time period during which the indication is valid (denoted as M, where M≥1) is the product of the number of time periods during which the indication is valid and the number of time slots in each time period (M=L×J). Alternatively, in some aspects, the indication may identify the total time period during which the indication is valid (M). For example, the indication may identify the number of time slots in each time period (J) and the total number of time slots during which the indication is valid. In some aspects, the indication may identify the PDCCH listening position associated with each set of J time slots, thereby enabling the PDCCH listening position to vary between time periods during which the indication is valid. In some aspects, the variation of the PDCCH listening position between time slot sets increases the flexibility associated with receiving and sending DCI communications.

[0154] In some aspects, the base station may send the indication in a DCI communication (e.g., in a DCI communication sent at a previously indicated PDCCH listening position). In some aspects, the base station may send the indication via RRC signaling. In some aspects, the base station may send the indication in a MAC CE. In this case, the MAC CE may identify a single logical channel identifier and a single PDCCH listening position, or may identify multiple logical channel identifiers and corresponding multiple PDCCH listening positions.

[0155] As further indicated by reference numeral 805, the UE may receive an indication identifying PDCCH listening locations for an upcoming set of time periods. In some aspects, the UE may receive the indication in a DCI communication, via RRC signaling, or in a MAC CE, as indicated above.

[0156] In some aspects, the UE may send an ACK indicating that an indication has been received. As an example, if the indication is carried in a DCI communication and the DCI communication is sent together with a PDSCH communication, the UE may attempt to decode the DCI communication and the PDSCH communication. Here, if the UE successfully decodes the DCI communication and the PDSCH communication, the UE may send (e.g., in the PUCCH) an ACK indicating that the UE has received the indication and the PDSCH communication. Conversely, in some aspects, the UE may send a NACK indicating that an indication has been received. As an example, if the indication is carried in a DCI communication and the DCI communication is sent together with the PDSCH communication, the UE may attempt to decode the DCI communication and the PDSCH communication. Here, if the UE successfully decodes the DCI communication but does not successfully decode the PDSCH communication, the UE may send (e.g., in the PUCCH) a NACK indicating that the UE has received the indication but has not received the PDSCH communication. Therefore, in some aspects, the base station may receive an ACK or NACK indicating that the UE has received the indication.

[0157] As indicated by reference numeral 810, the base station may send a first DCI communication at a first PDCCH listening position. For example, if the base station is to send a DCI communication during a first time period (e.g., a first time slot in a set of J time slots), the base station may send the first DCI communication at a first PDCCH listening position corresponding to the first time period. As indicated by reference numeral 815, in some aspects, the UE may listen at the first PDCCH listening position based at least in part on the indication. For example, after receiving the indication, the UE may listen at the identified first PDCCH listening position associated with receiving the first DCI communication.

[0158] The above operations may be repeated for the transmission and reception of subsequent DCI communications. For example, as indicated by reference numeral 820, if the base station is to send a DCI communication (denoted as the Xth DCI communication) to the UE during the (L×J)th time slot (i.e., the last time slot during which the indication is valid), the base station may send the Xth DCI communication at the Zth PDCCH listening position (e.g., the PDCCH listening position indicated for the time slot set including the (L×J)th time slot). As indicated by reference numeral 825, in some aspects, the UE may listen at the Zth PDCCH listening position based at least in part on the indication. For example, after receiving the indication, the UE may listen at the Zth PDCCH listening position identified as associated with receiving the Xth DCI communication during the (L×J)th time slot.

[0159] In some aspects, a given DCI communication may be used to update and / or modify (e.g., in a manner described herein) a previously provided indication. In this way, an indication of a PDCCH listening position may be dynamically indicated to a UE, thereby providing flexibility in the PDCCH listening position while also reducing power consumption of the UE.

[0160] In some aspects, the indication may identify multiple PDCCH listening positions for a given time period. For example, in some aspects, the indication may identify a first PDCCH listening position associated with a DCI communication during a first time period, and a second PDCCH listening position associated with a DCI communication during a second time period. In this example, the indication may also include a third PDCCH listening position associated with receiving a DCI communication during the first time period, wherein the third PDCCH listening position is different from the first PDCCH listening position. For example, this technique may be used when the first PDCCH listening position has been authorized to another UE, but a DCI communication needs to be transmitted to the UE during the first time period. In this case, the base station may determine that there is no DCI communication to be sent to the UE at the first PDCCH listening position (for example, because the first PDCCH listening position has been authorized to other UEs), and the DCI communication may be sent at the third PDCCH listening position. From the perspective of the UE, the UE may determine that a DCI communication for the UE is not received at a first PDCCH listening position (e.g., based at least in part on a failure to decode the DCI communication at the first PDCCH listening position), and may listen at a third PDCCH listening position based at least in part on determining that a DCI communication for the UE is not received at the first PDCCH listening position. In some aspects, the UE may first listen at the first PDCCH listening position (e.g., before listening at the third PDCCH listening position) based at least in part on a priority associated with the first PDCCH listening position and the third PDCCH listening position. In some aspects, the indication may identify more than two PDCCH listening positions associated with a given time period.

[0161] Figure 8B A diagram illustrating an exemplary sequence of operations associated with dynamic indication of PDCCH listening locations.

[0162] As shown in reference numeral 832, the base station uses the first beam (at Figure 8B The first DCI communication (e.g., an activation DCI) associated with a grant to activate SPS / configuration for the UE is sent to the UE by a first DCI communication (e.g., an activation DCI) associated with a first set of J time slots (e.g., resource block (RB) 3). As indicated, the first DCI communication includes an indication of a first PDCCH listening position (e.g., resource block (RB) 3) associated with a first set of J time slots, and an indication of a second PDCCH listening position (e.g., RB 10) associated with a second set of J time slots (e.g., a set of J time slots immediately following the first set of J time slots).

[0163] As indicated by reference numeral 834, the base station sends a first SPS PDSCH communication to the UE using the first beam. However, in this example, as indicated by reference numeral 836, the UE does not receive (e.g., fails to decode) the first SPS PDSCH communication. In this example, the reception failure of the first SPS PDSCH communication is caused by a beam quality problem. Therefore, as indicated by reference numeral 838, the UE sends a NACK to the base station indicating that the first SPS PDSCH communication was not received due to a beam quality problem.

[0164] As shown at 840, based at least in part on the NACK, the base station selects a beam to be used for further communication with the UE. Figure 8B Here, in association with beam reselection, the base station needs to send a second DCI communication to the UE. In this example, since the second DCI communication will be sent within the first set of J time slots, the base station sends the second DCI communication at the first PDCCH listening position (e.g., RB3) identified by the indication previously provided by the base station. Because the UE expects to receive the DCI communication within the first set of J time slots (e.g., as a result of beam quality issues / beam reselection), the UE listens to the first PDCCH detection position (e.g., RB3) indicated by the first DCI communication and receives the second DCI communication accordingly.

[0165] As indicated by reference numeral 842, the base station then transmits a second SPS PDSCH communication (e.g., a retransmission of the first SPS PDSCH communication) to the UE using the third beam. As indicated by reference numeral 844, the UE may receive the second SPS PDSCH communication and may provide an ACK to the base station indicating receipt of the second SPS PDSCH communication.

[0166] Next, as shown in reference numeral 846, the base station sends a third SPS PDSCH communication to the UE using the third beam. However, in this example, as indicated by reference numeral 848, the UE does not receive (e.g., fails to decode) the third SPS PDSCH communication. In this example, the reception failure of the third SPS PDSCH communication is caused by a beam quality problem. Therefore, as shown in reference numeral 850, the UE sends a NACK to the base station, which indicates that the third SPS PDSCH communication was not received due to a beam quality problem.

[0167] As shown at 852, based at least in part on the NACK, the base station selects a beam to use for further communication with the UE. In this example, the fifth beam (in Figure 8BHere, in association with beam reselection, the base station needs to send a third DCI communication to the UE. In this example, since the third DCI communication will be sent within the second set of J time slots, the base station sends the third DCI communication at the second PDCCH listening position (e.g., RB10) identified by the indication previously provided by the base station. Because the UE expects to receive DCI communications within the second set of J time slots (e.g., as a result of beam quality issues / beam reselection), the UE monitors the second PDCCH detection position (e.g., RB10) indicated by the first DCI communication and receives the second DCI communication accordingly.

[0168] As indicated by reference numeral 854, the base station next transmits a fourth SPS PDSCH communication (e.g., a retransmission of the third SPS PDSCH communication) to the UE using the fifth beam. As indicated by reference numeral 856, the UE may receive the fourth SPS PDSCH communication and may provide an ACK to the base station indicating receipt of the fourth SPS PDSCH communication. Further operations of the base station and the UE may continue in a similar manner.

[0169] As pointed out above, Fig. 8A and Figure 8B are provided as examples. Other examples may be related to Fig. 8A and Figure 8B Different than described.

[0170] Fig. 9 is a diagram illustrating an exemplary process 900, performed, for example, by a UE, in accordance with various aspects of the present disclosure. Exemplary process 900 is an example of operations in which a UE (eg, UE 120, etc.) performs operations associated with dynamic indication of physical downlink control channel listening locations.

[0171] like Fig. 9 As shown, in some aspects, process 900 may include receiving an indication associated with receiving a DCI communication, the indication identifying a first PDCCH listening position associated with receiving the DCI communication during a first time period, and a second PDCCH listening position associated with receiving the DCI communication during a second time period after the first time period (block 910). For example, the UE (e.g., using the receive processor 258, the controller / processor 280, the memory 282, etc.) may receive an indication associated with receiving a DCI communication, the indication identifying a first PDCCH listening position associated with receiving the DCI communication during the first time period, and a second PDCCH listening position associated with receiving the DCI communication during the second time period after the first time period, as described above.

[0172] like Fig. 9As further shown, in some aspects, process 900 may include monitoring at least in part based on the indication at the first PDCCH listening position and the second PDCCH listening position (block 920). For example, the UE (e.g., using the receive processor 258, the controller / processor 280, the memory 282, etc.) may monitor at least in part based on the indication at the first PDCCH listening position and the second PDCCH listening position, as described above.

[0173] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0174] In a first aspect, the first PDCCH monitoring position is different from the second PDCCH monitoring position.

[0175] In a second aspect, alone or in combination with the first aspect, the first time period is a time period corresponding to a first set of time slots, and the second time period is a time period corresponding to a second set of time slots subsequent to the first set of time slots.

[0176] In a third aspect, alone or in combination with one or more of the first and second aspects, the indication identifies a total time period during which the indication is valid. Here, the total time period corresponds to a set of time slots including the first time period and the second time period.

[0177] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the indicator identifies the number of time periods during which the indication is valid, and the number of time slots in each of the first time period and the second time period.

[0178] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, an indication identifies a third PDCCH listening position associated with receiving DCI communication during a first time period. Here, the third PDCCH listening position is different from the first PDCCH listening position.

[0179] In a sixth aspect, in combination with the fifth aspect, process 900 includes determining that DCI communications for the UE are not received at a first PDCCH listening position, and based at least in part on determining that DCI communications for the UE are not received at the first PDCCH listening position, monitoring at a third PDCCH listening position.

[0180] In the seventh aspect, alone or in combination with one or more of the first to sixth aspects, for each of the first PDCCH listening position and the second PDCCH listening position, the indication includes information associated with at least one of the following: frequency domain position, time domain position, search space identifier, CORESET identifier, period, offset, duration, number of symbols to be monitored, or number of PDCCH candidates.

[0181] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the indication is received via at least one of: DCI communication, RRC signaling, or MAC CE.

[0182] although Fig. 9 Example blocks of process 900 are shown, but in some aspects, Fig. 9 Process 900 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks compared to the blocks depicted in. Additionally or alternatively, two or more of the blocks in process 900 may be performed in parallel.

[0183] Fig.10 is a diagram illustrating an exemplary process 1000, performed, for example, by a base station, in accordance with various aspects of the present disclosure. Exemplary process 1000 is an example of operations in which a base station (eg, base station 110, etc.) performs operations associated with dynamic indication of physical downlink control channel listening locations.

[0184] like Fig.10 As shown, in some aspects, process 1000 may include sending an indication associated with sending a DCI communication, the indication identifying a first PDCCH listening position associated with a DCI communication to be sent during a first time period, and a second PDCCH listening position associated with a DCI communication to be sent during a second time period after the first time period (block 1010). For example, a base station (e.g., using transmit processor 220, controller / processor 240, memory 242, etc.) may send an indication associated with sending a DCI communication, the indication identifying a first PDCCH listening position associated with a DCI communication to be sent during a first time period, and a second PDCCH listening position associated with a DCI communication to be sent during a second time period after the first time period, as described above.

[0185] like Fig.10As further shown in FIG. 1 , in some aspects, process 1000 may include transmitting a DCI communication in at least one of the first PDCCH listening position or the second PDCCH listening position after transmitting the indication (block 1020). For example, the base station (e.g., using transmit processor 220, controller / processor 240, memory 242, etc.) may transmit a DCI communication in at least one of the first PDCCH listening position or the second PDCCH listening position after transmitting the indication, as described above.

[0186] Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in combination with one or more other processes described elsewhere herein.

[0187] In a first aspect, the first PDCCH monitoring position is different from the second PDCCH monitoring position.

[0188] In a second aspect, alone or in combination with the first aspect, the first time period is a time period corresponding to a first set of time slots, and the second time period is a time period corresponding to a second set of time slots subsequent to the first set of time slots.

[0189] In a third aspect, alone or in combination with one or more of the first and second aspects, the indication identifies a total time period during which the indication is valid. Here, the total time period corresponds to a set of time slots including the first time period and the second time period.

[0190] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the indicator identifies the number of time periods during which the indication is valid, and the number of time slots in each of the first time period and the second time period.

[0191] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, an indication identifies a third PDCCH listening position associated with receiving DCI communication during a first time period. Here, the third PDCCH listening position is different from the first PDCCH listening position.

[0192] In a sixth aspect, in combination with the fifth aspect, process 1000 includes determining that there is no DCI communication to be sent to a UE (e.g., UE 120) at a first PDCCH listening position; and sending DCI communications at a third PDCCH listening position based at least in part on determining that there is no DCI communication to be sent to the UE at the first PDCCH listening position.

[0193] In the seventh aspect, alone or in combination with one or more of the first to sixth aspects, for each of the first PDCCH listening position and the second PDCCH listening position, the indication includes information associated with at least one of the following: frequency domain position, time domain position, search space identifier, CORESET identifier, period, offset, duration, number of symbols to be monitored, or number of PDCCH candidates.

[0194] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the indication is sent via at least one of: DCI communication, RRC signaling, or MAC CE.

[0195] although Fig.10 An example block diagram of process 1000 is shown, but in some aspects, the same Fig.10 Process 1000 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks compared to the blocks depicted in. Additionally or alternatively, two or more of the blocks in process 1000 may be performed in parallel.

[0196] 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 may be made in light of the above disclosure or may be acquired from practice of the various aspects.

[0197] As used herein, the term "component" is intended to be broadly interpreted as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented in hardware, firmware, and / or a combination of hardware and software.

[0198] As used herein, satisfying a threshold may refer to a value 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., depending on the context.

[0199] It will be apparent that the systems and / or methods described herein can be implemented in various forms of hardware, firmware, and / or combinations of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit these aspects. Therefore, the operation and behavior of the systems and / or methods are described herein without reference to specific software code, and it should be understood that software and hardware can be designed to implement the systems and / or methods based at least in part on the description herein.

[0200] Even though specific combinations of features are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. In fact, many of these features can be combined in ways that are not specifically described in the claims and / or disclosed in the specification. Although each dependent claim listed below may directly depend on only one claim, the disclosure of the various aspects includes each dependent claim combined with each other claim in the claim set. A phrase referring to "at least one" in a list of items refers to any combination of those items including a single member. As an example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, as well as any combination with multiple identical elements (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, and ccc or any other ordering of a, b, and c).

[0201] Unless explicitly described as such, any element, action or instruction used herein should not be interpreted as critical or essential. In addition, as used herein, the articles "one" and "an" 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" and "group" are intended to include one or more items (e.g., related items, unrelated items, combinations of related items and unrelated items, etc.), and can be used interchangeably with "one or more". In the case of intending to have only one item, the phrase "only one" or similar language is used. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms. In addition, unless otherwise expressly stated, the phrase "based on" is intended to mean "based at least in part on".

Claims

1. A wireless communication method performed by a user equipment UE, comprising: Receiving, via a downlink control information (DCI) communication, an indication associated with receiving a subsequent DCI communication, the indication identifying: a first physical downlink control channel (PDCCH) listening position associated with receiving at least one first subsequent DCI communication during a first time period, a second PDCCH listening position associated with receiving at least one second subsequent DCI communication during a second time period after the first time period; as well as a total time period during which the indication is valid; as well as Based at least in part on the indication, monitoring at the first PDCCH monitoring position and the second PDCCH monitoring position; Wherein, for each of the first PDCCH monitoring position and the second PDCCH monitoring position, the indication includes information associated with the number of symbols to be monitored. 2 . The method according to claim 1 , wherein the first PDCCH monitoring position is different from the second PDCCH monitoring position. 3 . The method according to claim 1 , wherein the first time period is a time period corresponding to a first set of time slots, and the second time period is a time period corresponding to a second set of time slots subsequent to the first set of time slots.

4. The method according to claim 1, The total time period corresponds to a group of time slots including the first time period and the second time period.

5. The method of claim 1, wherein the indication of the total time period identifies a number of time periods during which the indication is valid, and a number of time slots in each of the first time period and the second time period.

6. The method of claim 1 , wherein the indication identifies a third PDCCH listening position associated with receiving at least one third subsequent DCI communication during the first time period, The third PDCCH monitoring position is different from the first PDCCH monitoring position.

7. The method according to claim 6, further comprising: Determining that no DCI communication for the UE is received at the first PDCCH listening position; as well as Based at least in part on determining that a DCI communication for the UE is not received at the first PDCCH listening location, listening at the third PDCCH listening location.

8. The method according to claim 1, wherein for each of the first PDCCH listening position and the second PDCCH listening position, the indication comprises information associated with at least one of: Frequency domain position, Time domain position, Search space identifier, Control resource set CORESET identifier, cycle, Offset, Duration, or The number of PDCCH candidates.

9. A method of wireless communication performed by a base station, comprising: Sending, via downlink control information (DCI) communication, an indication associated with sending a subsequent DCI communication, the indication identifying: a first Physical Downlink Control Channel (PDCCH) listening position associated with at least one first subsequent DCI communication to be sent during a first time period, a second PDCCH listening position associated with at least one second subsequent DCI communication to be sent during a second time period after the first time period; as well as a total time period during which the indication is valid; as well as After sending the indication, sending a subsequent DCI communication in at least one of the first PDCCH listening position or the second PDCCH listening position; Wherein, for each of the first PDCCH monitoring position and the second PDCCH monitoring position, the indication includes information associated with the number of symbols to be monitored. 10 . The method according to claim 9 , wherein the first PDCCH monitoring position is different from the second PDCCH monitoring position.

11. The method of claim 9, wherein the first time period is a time period corresponding to a first set of time slots, and the second time period is a time period corresponding to a second set of time slots subsequent to the first set of time slots.

12. The method according to claim 9, The total time period corresponds to a group of time slots including the first time period and the second time period.

13. The method of claim 9, wherein the indication of the total time period identifies a number of time periods during which the indication is valid, and a number of time slots in each of the first time period and the second time period.

14. The method of claim 9, wherein the indication identifies a third PDCCH listening position associated with receiving at least one third subsequent DCI communication during the first time period, The third PDCCH monitoring position is different from the first PDCCH monitoring position.

15. The method according to claim 14, further comprising: Determining that no DCI communication for user equipment UE is to be sent at the first PDCCH monitoring position; as well as Based at least in part on determining that no DCI communication for the UE is to be sent in the first PDCCH listening location, a DCI communication is sent in the third PDCCH listening location.

16. The method according to claim 9, wherein for each of the first PDCCH listening position and the second PDCCH listening position, the indication comprises information associated with at least one of: Frequency domain position, Time domain position, Search space identifier, Control resource set CORESET identifier, cycle, Offset, Duration, or The number of PDCCH candidates.

17. A user equipment UE for wireless communication, comprising: one or more memories; as well as One or more processors operably coupled to the memory, the memory and the one or more processors configured to: Receiving, via a downlink control information (DCI) communication, an indication associated with receiving a subsequent DCI communication, the indication identifying: a first physical downlink control channel (PDCCH) listening position associated with receiving at least one first subsequent DCI communication during a first time period, a second PDCCH listening position associated with receiving at least one second subsequent DCI communication during a second time period after the first time period; as well as a total time period during which the indication is valid; as well as Based at least in part on the indication, monitoring at the first PDCCH monitoring position and the second PDCCH monitoring position; Wherein, for each of the first PDCCH monitoring position and the second PDCCH monitoring position, the indication includes information associated with the number of symbols to be monitored. The UE according to claim 17 , wherein the first PDCCH monitoring position is different from the second PDCCH monitoring position.

19. The UE according to claim 17, wherein the first time period is a time period corresponding to a first time slot set, and the second time period is a time period corresponding to a second time slot set after the first time slot set.

20. The UE according to claim 17, The total time period corresponds to a group of time slots including the first time period and the second time period.

21. The UE of claim 17, wherein the indication of the total time period identifies a number of time periods during which the indication is valid, and a number of time slots in each of the first time period and the second time period.

22. The UE of claim 17, wherein the indication identifies a third PDCCH listening position associated with receiving at least one third subsequent DCI communication during the first time period, The third PDCCH monitoring position is different from the first PDCCH monitoring position.

23. The UE according to claim 17, wherein for each of the first PDCCH listening position and the second PDCCH listening position, the indication comprises information associated with at least one of: Frequency domain position, Time domain position, Search space identifier, Control resource set CORESET identifier, cycle, Offset, Duration, or The number of PDCCH candidates.

24. A base station for wireless communication, comprising: Memory; as well as One or more processors operably coupled to the memory, the memory and the one or more processors configured to: Sending, via downlink control information (DCI) communication, an indication associated with sending a subsequent DCI communication, the indication identifying: a first Physical Downlink Control Channel (PDCCH) listening position associated with at least one first subsequent DCI communication to be sent during a first time period, a second PDCCH listening position associated with at least one second subsequent DCI communication to be sent during a second time period after the first time period; as well as a total time period during which the indication is valid; as well as After sending the indication, sending a subsequent DCI communication in at least one of the first PDCCH listening position or the second PDCCH listening position; Wherein, for each of the first PDCCH monitoring position and the second PDCCH monitoring position, the indication includes information associated with the number of symbols to be monitored. 25 . The base station according to claim 24 , wherein the first PDCCH listening position is different from the second PDCCH listening position.

26. The base station according to claim 24, wherein the first time period is a time period corresponding to a first set of time slots, and the second time period is a time period corresponding to a second set of time slots subsequent to the first set of time slots.

27. The base station according to claim 24, The total time period corresponds to a group of time slots including the first time period and the second time period.

28. The base station of claim 24, wherein the indication of the total time period identifies a number of time periods during which the indication is valid, and a number of time slots in each of the first time period and the second time period.

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