Augmented reality power saving enhancements
By adopting a hybrid scheduling mechanism in the wireless communication system, combining dynamic scheduling and SPS-based scheduling, the problem of high signaling overhead caused by dynamic scheduling and unoptimized SPS in XR applications is solved, and power consumption is reduced and resource allocation efficiency is improved. .
Patent Information
- Application Number
- CN202380045745.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Priority Date
- 2022-06-21
- Filing Date
- 2023-06-13
- Publication Date
- 2025-01-21
AI Technical Summary
When handling XR applications, existing wireless communication systems have large signaling overhead caused by dynamic scheduling, and SPS is not optimized for XR, resulting in increased power consumption and inefficient resource allocation.
Adopting a hybrid scheduling mechanism, combining dynamic scheduling and SPS -based scheduling, the number of PDSCH to be monitored by SPS timing is determined in the SPS timing, and monitoring is performed according to the determination to reduce unnecessary PDSCH decoding attempts.
Effectively reduce power consumption, improve the efficiency of resource distribution, improve the user experience, and improve the overall performance of the system by reducing signaling overhead.
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Figure CN119343968A_ABST
Abstract
Description
[0001] CROSS-REFERENCE TO RELATED APPLICATIONS
[0002] This application claims priority to U.S. patent application serial number 17 / 807,931, filed on June 21, 2022, which is hereby incorporated by reference herein. Background Art Technical Field
[0003] Aspects of the present disclosure relate to wireless communications and, more particularly, to techniques for conserving power in applications involving wireless communications.
[0004] Related technologies
[0005] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, broadcasts or other similar types of services. These wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available wireless communication system resources with those users.
[0006] Although wireless communication systems have made tremendous technical progress over the years, challenges still exist. For example, complex and dynamic environments can still attenuate or block signals between wireless transmitters and wireless receivers. Therefore, there is a continued desire to improve the technical performance of wireless communication systems, including, for example: improving the speed and data carrying capacity of communications, improving the efficiency of using shared communication media, reducing the power used by transmitters and receivers when performing communications, improving the reliability of wireless communications, avoiding redundant transmission and / or reception and related processing, improving the coverage area of wireless communications, increasing the number and types of devices that can access wireless communication systems, increasing the ability of different types of devices to communicate with each other, increasing the number and types of wireless communication media available for use, etc. Therefore, there is a need to further improve wireless communication systems to overcome the above-mentioned technical challenges and other challenges. Summary of the invention
[0007] One aspect provides a method for wireless communication by a user equipment (UE). The method includes: receiving signaling for configuration of a semi-persistent scheduling (SPS) opportunity for receiving a physical downlink shared channel (PDSCH); determining the number of PDSCHs to be monitored in the SPS opportunity; and monitoring the PDSCH in the SPS opportunity based on the determination.
[0008] Another aspect provides a method for wireless communication by a network entity. The method includes: sending signaling to configure a UE for an SPS opportunity, the SPS opportunity being used to receive a PDSCH; determining the number of PDSCHs to be monitored by the UE in the SPS opportunity; and sending the PDSCH in the SPS opportunity based on the determination.
[0009] Other aspects provide: an apparatus operable to, configured to, or otherwise adapted to perform any one or more of the foregoing methods and / or those described elsewhere herein; a non-transitory computer-readable medium comprising instructions that, when executed by a processor of the apparatus, cause the apparatus to perform the foregoing methods and those described elsewhere herein; a computer program product embodied on a computer-readable storage medium comprising code for performing the foregoing methods and those described elsewhere herein; and / or an apparatus comprising components for performing the foregoing methods and those described elsewhere herein. By way of example, an apparatus may include a processing system, a device having a processing system, or a processing system cooperating through one or more networks.
[0010] For purposes of illustration, the following description and drawings set forth certain features. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] The accompanying drawings depict certain features of the various aspects described herein and should not be considered to limit the scope of the disclosure.
[0012] Figure 1 An example wireless communication network is depicted.
[0013] Figure 2 An example disaggregated base station architecture is depicted.
[0014] Figure 3 Aspects of an example base station and example user equipment are depicted.
[0015] Figure 4A , Figure 4B , Figure 4C and Figure 4D Various example aspects of data structures for a wireless communication network are described.
[0016] Figure 5 Depicted is an example timeline for physical downlink shared channel (PDSCH) scheduling.
[0017] Figure 6 An example timeline of PDSCH scheduling with jitter is depicted.
[0018] Figure 7 Depicted is a call flow diagram for PDSCH scheduling in accordance with aspects of the present disclosure.
[0019] Fig. 8A , Figure 8B and Figure 8C Depicted is an example timeline for PDSCH scheduling in accordance with aspects of the present disclosure.
[0020] Fig. 9 Depicted are examples of search space set group (SSSG) switching in accordance with aspects of the present disclosure.
[0021] Fig.10 A method for wireless communication is described.
[0022] Fig.11 A method for wireless communication is described.
[0023] Fig.12 Aspects of an example communications device are depicted.
[0024] Fig.13 Aspects of an example communications device are depicted. DETAILED DESCRIPTION
[0025] Aspects of the present disclosure provide apparatus, methods, processing systems, and computer-readable media for conserving power in applications involving wireless communications.
[0026] Various wireless devices such as the Internet of Things (IoT) and wearables have limited power sources. For example, smart glasses used for extended reality (XR) applications typically have a small battery (typically 200mAhr) due to their small form factor. As used herein, the term XR generally covers a variety of technologies such as augmented reality (AR) and virtual reality (VR). Since it is often impractical to add a larger battery to an XR wearable, power conservation is often considered an important area of XR design.
[0027] One potential impact on power savings is how downlink traffic (such as multimedia traffic) is scheduled to be sent to user equipment (UE) configured as an XR device. In some cases, scheduling information may be dynamically indicated via downlink control information (DCI). In this case, a network entity (e.g., a base station) may determine that data is available for transmission to or from a user equipment (UE), and each time data is to be transmitted, the base station may send a scheduling indication (dynamic grant) via the DCI conveyed in the physical downlink control channel (PDCCH). However, such dynamic scheduling may result in significant signaling overhead in the system, especially when a large number of UEs frequently receive small amounts of data.
[0028] One mechanism to reduce this signaling overhead is semi-persistent scheduling (SPS), in which the UE is configured with periodic resources for data transmission, which can be activated and deactivated. When activated, the UE can start decoding downlink services transmitted via the physical downlink shared channel (PDSCH) on the corresponding periodic resources. Unfortunately, the current SPS is not optimized for XR. In addition, in the presence of jitter, PDSCH detection may consume additional power for the UE to detect the data arrival time, because the UE may periodically attempt to decode the PDSCH even when no data is sent during a given period. In addition, the network may need to configure the amount of resources for the worst-case scenario with the maximum possible frame data size. This may result in over-allocation of resources to one UE, which may mean fewer resources for other UEs and reduced scheduling flexibility.
[0029] However, aspects of the present disclosure provide various mechanisms that may help enhance SPS-based PDSCH scheduling for XR applications. As a result, power consumption may be reduced, resources may be allocated more efficiently, and the overall user experience may be improved.
[0030] Introduction to wireless communication networks
[0031] The techniques and methods described herein can be used in various wireless communication networks. Although various aspects may be described herein using terms commonly associated with 3G, 4G and / or 5G wireless technologies, various aspects of the present disclosure may also be applicable to other communication systems and standards not explicitly mentioned herein.
[0032] Figure 1 An example of a wireless communication network 100 is depicted in which various aspects described herein may be implemented.
[0033] In general, the wireless communication network 100 includes various network entities (alternatively, network elements or network nodes). A network entity is typically a communication device and / or a communication function performed by a communication device (e.g., user equipment (UE), base station (BS), component of a BS, server, etc.). For example, various functions of a network and various devices associated with and interacting with the network may be considered network entities. In addition, the wireless communication network 100 includes ground aspects, such as ground-based network entities (e.g., BS 102), and non-ground aspects, such as satellites 140 and aircraft 145, which may include airborne network entities (e.g., one or more BSs) capable of communicating with other network elements (e.g., ground BSs) and user equipment.
[0034] In the depicted example, the wireless communication network 100 includes a BS 102, a UE 104, and one or more core networks (such as an evolved packet core (EPC) 160 and a 5G core (5GC) network 190) that interoperate to provide communication services over various communication links (including wired and wireless links).
[0035] Figure 1 Various example UEs 104 are depicted, which may more generally include: a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player, a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, an Internet of Things (IoT) device, an Always-On (AON) device, an edge processing device, or other similar devices. UE 104 may also be more generally referred to as a mobile device, a wireless device, a wireless communication device, a station, a mobile station, a subscriber station, a mobile subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a remote device, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, and others.
[0036] BS 102 communicates wirelessly with (e.g., sends signals to or receives signals from) UE 104 via communication link 120. Communication link 120 between BS 102 and UE 104 may include uplink (UL) (also referred to as a reverse link) transmissions from UE 104 to BS 102 and / or downlink (DL) (also referred to as a forward link) transmissions from BS 102 to UE 104. In various aspects, communication link 120 may use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity.
[0037] BS 102 may generally include: NodeB, enhanced NodeB (eNB), next generation enhanced NodeB (ng-eNB), next generation NodeB (gNB or gNodeB), access point, base transceiver, radio base station, radio transceiver, transceiver function, transmission and reception point, and / or other. Each of BS 102 may provide communication coverage for a corresponding geographic coverage area 110, which may sometimes be referred to as a cell, and may overlap in some cases (e.g., a small cell 102' may have a coverage area 110' that overlaps with the coverage area 110 of a macro cell). For example, a BS may provide communication coverage for a macro cell (covering a relatively large geographic area), a pico cell (covering a relatively small geographic area, such as a stadium), a femto cell (relatively small geographic area (e.g., a home)), and / or other types of cells.
[0038] Although BS102 is depicted as a single communication device in various aspects, BS102 can be implemented in various configurations. For example, one or more components of the base station may be decomposed, including a central unit (CU), one or more distributed units (DU), one or more radio units (RU), a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non-RT) RIC, to name a few examples. In another example, various aspects of the base station may be virtualized. More generally, a base station (e.g., BS102) may include components located at a single physical location or components located at various physical locations. In an example in which the base station includes components located at various physical locations, each component may perform a function so that each component together implements a function similar to that of a base station located at a single physical location. In some aspects, a base station including components located at various physical locations may be referred to as a decomposed radio access network architecture (such as an open RAN (O-RAN) or virtualized RAN (VRAN) architecture). Figure 2 An example decomposed base station architecture is depicted and described.
[0039] Different BSs 102 within the wireless communication network 100 may also be configured to support different radio access technologies (such as 3G, 4G, and / or 5G). For example, a BS 102 configured for 4G LTE (collectively referred to as the Evolved Universal Mobile Telecommunications System (UMTS) Terrestrial Radio Access Network (E-UTRAN)) may interface with the EPC 160 via a first backhaul link 132 (e.g., an S1 interface). A BS 102 configured for 5G (e.g., 5G NR or Next Generation RAN (NG-RAN)) may interface with the 5GC 190 via a second backhaul link 184. The BSs 102 may communicate with each other directly or indirectly (e.g., via the EPC 160 or the 5GC 190) over a third backhaul link 134 (e.g., an X2 interface), which may be wired or wireless.
[0040] The wireless communication network 100 may subdivide the electromagnetic spectrum into various categories, frequency bands, channels, or other characteristics. In some aspects, the subdivision is provided based on wavelength and frequency, where frequency may also be referred to as a carrier, subcarrier, channel, tone, or subband. For example, 3GPP currently defines frequency range 1 (FR1) as including 410 MHz-7125 GHz, which is often (interchangeably) referred to as "below 6 GHz". Similarly, 3GPP currently defines frequency range 2 (FR2) as including 24,250 MHz-52,600 MHz, which is sometimes (interchangeably) referred to as "millimeter wave" ("mmW" or "mmWave"). A base station (e.g., a mmWave base station such as BS180) configured to communicate using mmWave / near mmWave radio bands may utilize beamforming (e.g., 182) with a UE (e.g., 104) to improve path loss and range.
[0041] The communication link 120 between the BS 102 and, for example, the UE 104 may be through one or more carriers, which may have different bandwidths (e.g., 5 MHz, 10 MHz, 15 MHz, 20 MHz, 100 MHz, 400 MHz, and / or other MHz) and may be aggregated in various aspects. The carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL compared to UL).
[0042] Communications using higher frequency bands may have higher path loss and shorter range than communications at lower frequencies. Figure 1 180) may utilize beamforming 182 with UE 104 to improve path loss and distance. For example, BS 180 and UE 104 may each include multiple antennas, such as antenna elements, antenna panels and / or antenna arrays, to facilitate beamforming. In some cases, BS 180 may send beamformed signals to UE 104 in one or more transmit directions 182'. UE 104 may receive beamformed signals from BS 180 in one or more receive directions 182". UE 104 may also send beamformed signals to BS 180 in one or more transmit directions 182". BS 180 may also receive beamformed signals from UE 104 in one or more receive directions 182'. BS 180 and UE 104 may then perform beam training to determine the best receive and transmit directions for each of BS 180 and UE 104. It is noteworthy that the transmit direction and receive direction of BS 180 may be the same or different. Similarly, the transmit direction and receive direction of UE 104 may be the same or different.
[0043] Wireless communication network 100 also includes Wi-Fi AP 150 that communicates with Wi-Fi station (STA) 152 via communication link 154 in, for example, the 2.4 GHz and / or 5 GHz unlicensed spectrum.
[0044] Certain UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), a physical sidelink control channel (PSCCH), and / or a physical sidelink feedback channel (PSFCH).
[0045] The EPC 160 may include various functional components, including: a mobility management entity (MME) 162, other MMEs 164, a serving gateway 166, a multimedia broadcast multicast service (MBMS) gateway 168, a broadcast multicast service center (BM-SC) 170, and / or a packet data network (PDN) gateway 172, such as in the depicted example. The MME 162 may communicate with a home subscriber server (HSS) 174. The MME 162 is a control node that handles signaling between the UE 104 and the EPC 160. In general, the MME 162 provides bearer and connection management.
[0046] Generally, user Internet Protocol (IP) packets are delivered through the Serving Gateway 166, which itself is connected to the PDN Gateway 172. The PDN Gateway 172 provides UE IP address allocation and other functions. The PDN Gateway 172 and the BM-SC 170 are connected to the IP Services 176, which may include, for example, the Internet, an Intranet, an IP Multimedia Subsystem (IMS), a Packet Switched (PS) streaming media service, and / or other IP services.
[0047] The BM-SC 170 may provide functionality for MBMS user service provisioning and delivery. The BM-SC 170 may serve as an entry point for content provider MBMS delivery, may be used to authorize and initiate MBMS bearer services within a public land mobile network (PLMN), and / or may be used to schedule MBMS delivery. The MBMS Gateway 168 may be used to distribute MBMS services to BSs 102 belonging to a multicast broadcast single frequency network (MBSFN) area broadcasting a specific service, and / or may be responsible for session management (start / stop) and for collecting eMBMS related charging information.
[0048] 5GC 190 may include various functional components, including: access and mobility management function (AMF) 192, other AMFs 193, session management function (SMF) 194, and user plane function (UPF) 195. AMF 192 may communicate with unified data management (UDM) 196.
[0049] AMF 192 is a control node that handles signaling between UE 104 and 5GC 190. AMF 192 provides, for example, Quality of Service (QoS) flow and session management.
[0050] Internet Protocol (IP) packets are delivered through UPF 195, which is connected to IP Services 197 and provides UE IP address allocation and other functions for 5GC 190. IP Services 197 may include, for example, the Internet, Intranet, IMS, PS streaming services, and / or other IP services.
[0051] In various aspects, a network entity or network node may be implemented as a converged base station, a decomposed base station, a component of a base station, an integrated access and backhaul (IAB) node, a relay node, a sidelink node, to name a few examples.
[0052] Figure 2 An example disaggregated base station 200 architecture is depicted. The disaggregated base station 200 architecture may include one or more central units (CUs) 210 that may communicate directly with a core network 220 via a backhaul link, or indirectly with the core network 220 through one or more disaggregated base station units, such as a near real-time (near-RT) RAN intelligent controller (RIC) 225 via an E2 link, or a non-real-time (non-RT) RIC 215 associated with a service management and orchestration (SMO) framework 205, or both. The CU 210 may communicate with one or more distributed units (DUs) 230 via respective midhaul links, such as an F1 interface. The DU 230 may communicate with one or more radio units (RUs) 240 via respective fronthaul links. The RU 240 may communicate with respective UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 240.
[0053] Each of the units (e.g., CU 210, DU 230, RU 240, and near-RT RIC 225, non-RT RIC 215, and SMO framework 205) may include or be coupled to one or more interfaces configured to receive or send signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each of the units or an associated processor or controller that provides instructions to the communication interface of the unit may be configured to communicate with one or more of the other units via a transmission medium. For example, the units may include a wired interface configured to receive or send signals to one or more of the other units via a wired transmission medium. Additionally or alternatively, the unit may include a wireless interface that may include a receiver, a transmitter, or a transceiver (such as a radio frequency (RF) transceiver) configured to receive or send signals, or both, to one or more of the other units on a wireless transmission medium.
[0054] In some aspects, CU 210 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), etc. Each control function may be implemented using an interface configured to communicate signals with other control functions hosted by CU 210. CU 210 may be configured to handle user plane functions (e.g., central unit-user plane (CU-UP)), control plane functions (e.g., central unit-control plane (CU-CP)), or a combination thereof. In some specific implementations, CU 210 may be logically divided into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, CU 210 may be implemented to communicate with DU 230 for network control and signaling.
[0055] DU 230 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 240. In some aspects, DU 230 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, etc.) at least in part according to functional divisions such as those defined by the 3rd Generation Partnership Project (3GPP). In some aspects, DU 230 may further host one or more low PHY layers. Each layer (or module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by DU 230 or with control functions hosted by CU 210.
[0056] The lower layer functions may be implemented by one or more RUs 240. In some deployments, the RU 240 controlled by the DU 230 may correspond to a logical node that hosts RF processing functions or low PHY layer functions (such as performing fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, physical random access channel (PRACH) extraction and filtering, etc.), or both, based at least in part on functional partitioning (such as lower layer functional partitioning). In such an architecture, the RU 240 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications with the RU 240 may be controlled by the corresponding DU 230. In some scenarios, this configuration may enable the implementation of the DU 230 and the CU 210 in a cloud-based RAN architecture (such as a vRAN architecture).
[0057] The SMO framework 205 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 205 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 205 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 290) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 210, DU 230, RU 240, and near-RT RIC 225. In some specific implementations, the SMO framework 205 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 211) via the O1 interface. In addition, in some specific implementations, the SMO framework 205 may communicate directly with one or more RUs 240 via the O1 interface. The SMO framework 205 may also include a non-RT RIC 215 configured to support the functionality of the SMO framework 205 .
[0058] The non-RT RIC 215 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 225. The non-RT RIC 215 may be coupled to or in communication with the near-RT RIC 225 (such as via an A1 interface). The near-RT RIC 225 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 210, one or more DUs 230, or both, and the O-eNB with the near-RT RIC 225.
[0059] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 225, the non-RT RIC 215 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 225 and may be received from a non-network data source or from a network function at the SMO framework 205 or the non-RT RIC 215. In some examples, the non-RT RIC 215 or the near-RT RIC 225 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 215 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 205 (such as via reconfiguration of O1) or via the creation of RAN management policies (such as A1 policies).
[0060] Figure 3 Aspects of an example BS 102 and UE 104 are depicted.
[0061] In general, BS 102 includes various processors (e.g., 320, 330, 338, and 340), antennas 334a-334t (collectively 334), transceivers 332a-332t (collectively 332) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., data source 312) and wireless reception of data (e.g., data sink 339). For example, BS 102 can transmit and receive data between BS 102 and UE 104. BS 102 includes a controller / processor 340 that can be configured to implement various functions described herein related to wireless communication.
[0062] Generally speaking, the UE 104 includes various processors (e.g., 358, 364, 366, and 380), antennas 352a-352r (collectively 352), transceivers 354a-354r (collectively 354) including modulators and demodulators, and other aspects that enable wireless transmission of data (e.g., retrieved from a data source 362) and wireless reception of data (e.g., provided to a data sink 360). The UE 104 includes a controller / processor 380 that can be configured to implement various functions described herein related to wireless communications.
[0063] Regarding example downlink transmissions, BS 102 includes a transmit processor 320 that can receive data from a data source 312 and control information from a controller / processor 340. The control information can be for a physical broadcast channel (PBCH), a physical control format indicator channel (PCFICH), a physical HARQ indicator channel (PHICH), a physical downlink control channel (PDCCH), a group common PDCCH (GC PDCCH), and / or others. In some examples, the data can be for a physical downlink shared channel (PDSCH).
[0064] The transmit processor 320 may process (e.g., encode and symbol map) data and control information to obtain data symbols and control symbols, respectively. The transmit processor 320 may also generate reference symbols (such as for a primary synchronization signal (PSS), a secondary synchronization signal (SSS), a PBCH demodulation reference signal (DMRS), and a channel state information reference signal (CSI-RS)).
[0065] The transmit (TX) multiple-input multiple-output (MIMO) processor 330 may perform spatial processing (e.g., pre-decoding) on data symbols, control symbols, and / or reference symbols, where applicable, and may provide an output symbol stream to a modulator (MOD) in a transceiver 332a-332t. Each modulator in the transceiver 332a-332t may process a corresponding output symbol stream to obtain an output sample stream. Each modulator may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The downlink signals from the modulators in the transceivers 332a-332t may be transmitted via antennas 334a-334t, respectively.
[0066] To receive downlink transmissions, UE 104 includes antennas 352a-352r that can receive downlink signals from BS 102 and can provide received signals to demodulators (DEMODs) in transceivers 354a-354r, respectively. Each demodulator in transceivers 354a-354r can condition (e.g., filter, amplify, downconvert, and digitize) a corresponding received signal to obtain input samples. Each demodulator can further process the input samples to obtain received symbols.
[0067] A MIMO detector 356 may obtain received symbols from all demodulators in transceivers 354a-354r, perform MIMO detection on the received symbols if applicable, and provide detected symbols. A receive processor 358 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for the UE 104 to a data sink 360, and provide decoded control information to a controller / processor 380.
[0068] With respect to example uplink transmissions, the UE 104 also includes a transmit processor 364 that may receive and process data from a data source 362 (e.g., for a PUSCH) and control information from a controller / processor 380 (e.g., for a physical uplink control channel (PUCCH)). The transmit processor 364 may also generate reference symbols for reference signals (e.g., for a sounding reference signal (SRS)). The symbols from the transmit processor 364 may be pre-decoded by a TX MIMO processor 366, if applicable, further processed by a modulator in the transceivers 354a-354r (e.g., for SC-FDM), and transmitted to the BS 102.
[0069] At BS 102, uplink signals from UE 104 may be received by antennas 334 a-334 t, processed by demodulators in transceivers 332 a-332 t, detected by MIMO detector 336 if applicable, and further processed by receive processor 338 to obtain decoded data and control information transmitted by UE 104. Receive processor 338 may provide decoded data to data sink 339 and decoded control information to controller / processor 340.
[0070] Memory 342 and memory 382 may store data and program codes for BS 102 and UE 104, respectively.
[0071] The scheduler 344 may schedule UEs for data transmission on the downlink and / or uplink.
[0072] In various aspects, BS 102 may be described as sending and receiving various types of data associated with the methods described herein. In these contexts, "sending" may refer to various mechanisms for outputting data, such as outputting data from a data source 312, a scheduler 344, a memory 342, a transmit processor 320, a controller / processor 340, a TX MIMO processor 330, a transceiver 332a-332t, an antenna 334a-334t, and / or other aspects described herein. Similarly, "receiving" may refer to various mechanisms for obtaining data, such as obtaining data from an antenna 334a-334t, a transceiver 332a-332t, a RX MIMO detector 336, a controller / processor 340, a receive processor 338, a scheduler 344, a memory 342, and / or other aspects described herein.
[0073] In various aspects, the UE 104 may also be described as sending and receiving various types of data associated with the methods described herein. In these contexts, "sending" may refer to various mechanisms for outputting data, such as outputting data from a data source 362, a memory 382, a transmit processor 364, a controller / processor 380, a TX MIMO processor 366, a transceiver 354a-354t, an antenna 352a-352t, and / or other aspects described herein. Similarly, "receiving" may refer to various mechanisms for obtaining data, such as obtaining data from an antenna 352a-352t, a transceiver 354a-354t, a RX MIMO detector 356, a controller / processor 380, a receive processor 358, a memory 382, and / or other aspects described herein.
[0074] In some aspects, the processor may be configured to perform various operations (such as those associated with the methods described herein) and send (output) data to or receive (obtain) data from another interface configured to send or receive data, respectively.
[0075] Figure 4A , Figure 4B , Figure 4C and Figure 4D Describes a method for use in a wireless communication network such as Figure 1 Various aspects of the data structure of the wireless communication network 100).
[0076] Specifically, Figure 4A is a diagram 400 illustrating an example of a first subframe within a 5G (e.g., 5G NR) frame structure, Figure 4B is a diagram 430 illustrating an example of a DL channel within a 5G subframe, Figure 4C is a diagram 450 illustrating an example of a second subframe within a 5G frame structure, and Figure 4D FIG480 is a diagram illustrating an example of UL channels within a 5G subframe.
[0077] Wireless communication systems may utilize orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) on both the uplink and downlink. Such systems may also support half-duplex operation using time division duplex (TDD). OFDM and single carrier frequency division multiplexing (SC-FDM) can be used to maximize the system bandwidth (e.g., Figure 4B and Figure 4D The modulation symbols may be transmitted in the frequency domain using OFDM and / or in the time domain using SC-FDM.
[0078] The wireless communication frame structure may be frequency division duplex (FDD), where for a particular set of subcarriers, subframes within the set of subcarriers are dedicated to either DL or UL. The wireless communication frame structure may also be time division duplex (TDD), where for a particular set of subcarriers, subframes within the set of subcarriers are dedicated to both DL and UL.
[0079] exist Figure 4A and Figure 4CIn the wireless communication frame structure, TDD is used, where D is DL, U is UL, and X is used flexibly between DL / UL. The UE can be configured with a time slot format (dynamically configured by DL control information (DCI) or semi-statically / statically configured by radio resource control (RRC) signaling) through the received time slot format indicator (SFI). In the depicted example, the 10ms frame is divided into 10 equally sized 1ms subframes. Each subframe may include one or more time slots. In some examples, each time slot may include 7 or 14 symbols, depending on the time slot format. The subframe may also include micro-time slots, which typically have fewer symbols than the entire time slot. Other wireless communication technologies may have different frame structures and / or different channels.
[0080] In certain aspects, the number of time slots within a subframe is based on the time slot configuration and the parameter set. For example, for time slot configuration 0, different parameter sets (μ) 0 to 5 allow for 1, 2, 4, 8, 16, and 32 time slots per subframe, respectively. For time slot configuration 1, different parameter sets 0 to 2 allow for 2, 4, and 8 time slots per subframe, respectively. Thus, for time slot configuration 0 and parameter set μ, there are 14 symbols / time slot and 2μ time slots / subframe. The subcarrier spacing and symbol length / duration are a function of the parameter set. The subcarrier spacing may be equal to 2 μ × 15kHz, where μ is parameter set 0 to 5. Thus, parameter set μ=0 has a subcarrier spacing of 15kHz, and parameter set μ=5 has a subcarrier spacing of 480kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figure 4A , Figure 4B , Figure 4C and Figure 4D An example is provided for slot configuration 0 with 14 symbols per slot and parameter set μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs.
[0081] like Figure 4A , Figure 4B , Figure 4C and Figure 4D As depicted in , a resource grid can be used to represent a frame structure. Each time slot includes a resource block (RB) (also called a physical RB (PRB)) extending, for example, 12 consecutive subcarriers. The resource grid is divided into a plurality of resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.
[0082] like Figure 4A As illustrated, some REs carry Figure 1 and Figure 3The RS may include a demodulation RS (DMRS) and / or a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and / or a phase tracking RS (PT-RS).
[0083] Figure 4B Examples of various DL channels within a subframe of a frame are illustrated.The Physical Downlink Control Channel (PDCCH) carries DCI within one or more Control Channel Elements (CCEs), each CCE comprising, for example, nine RE Groups (REGs), each REG comprising, for example, four consecutive REs in an OFDM symbol.
[0084] The primary synchronization signal (PSS) may be in symbol 2 of a particular subframe of a frame. The PSS is transmitted by a UE (e.g., Figure 1 and Figure 3 104) is used to determine subframe / symbol timing and physical layer identification.
[0085] A Secondary Synchronization Signal (SSS) may be within symbol 4 of a particular subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and radio frame timing.
[0086] Based on the physical layer identifier and the physical layer cell identifier group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the aforementioned DMRS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block. The MIB provides the system frame number (SFN) and the number of RBs in the system bandwidth. The physical downlink shared channel (PDSCH) carries user data, broadcast system information (such as system information blocks (SIBs)) that is not sent via the PBCH, and / or paging messages.
[0087] like Figure 4C As illustrated, some REs carry DMRS for channel estimation at the base station (indicated as R for one particular configuration, but other DMRS configurations are possible). The UE may send DMRS for PUCCH and DMRS for PUSCH. The PUSCH DMRS may be sent, for example, in the first one or two symbols of the PUSCH. The PUCCH DMRS may be sent in different configurations depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used. The UE 104 may send a sounding reference signal (SRS). The SRS may be sent, for example, in the last symbol of a subframe. The SRS may have a comb structure, and the UE may send the SRS on one of the comb structures in the comb structure. The SRS may be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.
[0088] Figure 4D Examples of various UL channels within a subframe of a frame are illustrated. The PUCCH may be located at a position as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicator (CQI), precoding matrix indicator (PMI), rank indicator (RI), and HARQ ACK / NACK feedback. The PUSCH carries data and may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.
[0089] Overview of the impact of scheduling on power consumption
[0090] As noted above, one potential impact on power savings is how downlink traffic (such as multimedia traffic) is scheduled to be sent to the UE. Aspects of the present disclosure provide potential enhancements to downlink scheduling based on semi-persistent scheduling (SPS) for XR use cases. The enhancements proposed herein may help save power while still being suitable for downlink (DL) traffic in periodic bursts, such as XR (media) frame data.
[0091] In some systems (e.g., NR Release 15), SPS-based scheduling may support radio resource control (RRC) pre-configuration of allocated resources, with PDCCH activation (e.g., via DCI format 1_0 or DCI format 1_1) and release (e.g., via DCI format 1_0). In other systems (e.g., NR Release 16), SPS-based scheduling may support multiple active SPS configurations (e.g., for different service types) and joint activation and release of multiple SPS configurations (e.g., DCI format 1_2 for activation and DCI format 1_1 / 1_2 for release). In such systems, the minimum SPS periodicity may be reduced to one slot.
[0092] XR traffic has various characteristics that may pose challenges to conventional SPS-based scheduling. For example, XR traffic is characterized by a mix of gesture and video traffic to or from XR devices (e.g., headsets). This traffic is characterized by bursty (quasi-periodic) packet arrivals at different delays (applying jitter). Due to this jitter effect, the arrival time of a data burst may be uncertain. In addition, XR video frames may have variable data sizes depending on the content of the video frame.
[0093] As pointed out above, current SPS-based scheduling techniques are not optimized for XR downlink traffic and may result in unnecessary power consumption. For example, in the presence of jitter, PDSCH detection may consume additional power for the UE to detect data arrival time. In addition, the network may need to configure the amount of resources for the worst case with the largest possible frame data size.
[0094] Various aspects of the present disclosure may utilize a hybrid approach that combines the features of dynamic scheduling and SPS-based scheduling to help enhance downlink traffic scheduling. In general, the hybrid scheduling may be jointly based on pre-configuration (as with SPS-based scheduling) and dynamic indications at configured times. The pre-configuration may indicate the timing at which data can be scheduled based on SPS or a configured grant. In some cases, each timing may be at a loose periodicity (e.g., every 5 milliseconds) relative to conventional SPS-based timings. The DCI may include UE-specific information for one or more UEs. This may be similar to a multicast scheduling mechanism, but the data may be unicast (not shared between UEs). In some cases, the DCI may convey a limited subset of scheduling parameters that are dynamically assigned to each scheduled user at the configured timing. The DCI may be conveyed in a PDCCH that can be decoded with a lower complexity than a conventional PDCCH for dynamic scheduling. The UE may monitor this PDCCH compactly at a pre-configured timing.
[0095] This hybrid scheduling approach can achieve a trade-off between PDCCH capacity, power consumption overhead, and scheduling flexibility. As described in more detail below, multiple PDSCHs on one SPS opportunity can be indicated by a single DCI. One DCI can indicate several time slots with PDSCH for a video frame. Based on this indication, the UE does not need to monitor PDCCH and PDSCH in the remaining time slots.
[0096] Figure 5 The potential advantages of a hybrid scheduling approach over a conventional SPS-based approach are illustrated in . In the illustrated example, over a duration of 15 slots, only 9 slots have PDSCH data to decode. Therefore, with SPS-based scheduling, the UE may waste power trying to decode the PDSCH in the remaining 6 slots, even though no data is sent in these slots.
[0097] In the hybrid scheduling approach, the PDCCH at the beginning of the 15-slot duration may indicate the number of slots that actually have PDSCH to decode. Therefore, the UE can save a lot of power by not trying to decode PDSCH after the 9th slot. For example, hybrid scheduling can effectively improve UE power performance by up to 33% by avoiding unnecessary PDSCH decoding attempts in slots with no data.
[0098] exist Figure 5 In the example shown, the data arrives without jitter. However, jitter can have a significant impact on performance. Figure 6 An example illustrating the effect of jitter is illustrated. As noted above, the network may need to configure the amount of resources for the worst case with the largest possible frame data size. In the illustrated example, the UE is configured with a maximum number of slots (15) for varying packet sizes and a maximum duration of jitter effects in a slot.
[0099] As illustrated in the figure, in case of SPS based scheduling, the UE attempts to decode PDSCH in a slot without data before the actual data arrives. Furthermore, the UE continues to attempt PDSCH decoding through the remaining slots (taking into account the maximum jitter duration).
[0100] On the other hand, with hybrid scheduling, the UE may know when data is available and may avoid attempting PDSCH decoding before receiving an indication of XR data reception. For example, the UE may know when XR data actually arrives by decoding PDCCH during the configured timing. Figure 6 In the example shown in , the potential power saving gain obtained by hybrid scheduling can be increased. In some cases, based on the network RRC configuration, the UE may stop reception of XR data to save power, for example, after the maximum number of time slots that could potentially be used for video frames have been processed. This early stopping mechanism may help UE power saving for receiving XR DL traffic and can be used as an alternative to or in combination with hybrid scheduling (which dynamically indicates the start and length of the data duration).
[0101] Aspects Related to Enhanced Scheduling for Potential Power Savings
[0102] As explained above, the scheduling mechanism may have a significant impact on power consumption. Aspects of the present disclosure provide various mechanisms that may help enhance SPS-based PDSCH scheduling for XR applications. For example, the mechanisms proposed herein may help increase the potential power savings obtained through a hybrid scheduling mechanism.
[0103] For reference Figure 7 The call flow diagram 700 is used to understand the mechanism of enhanced PDSCH calling for UE presented in this document.
[0104] As illustrated, the UE may receive a configuration from a network entity (e.g., a gNB or a node of a decomposed base station). The configuration may configure the UE for an SPS opportunity to receive a PDSCH. The UE may determine the number of PDSCHs to monitor in an SPS opportunity. Therefore, based on this determination, the UE may monitor only a limited number of PDSCHs instead of monitoring all possible PDSCHs in an SPS opportunity. In this way, processing the determined number of PDSCHs may effectively act as an early stop of the SPS, which may help reduce power consumption.
[0105] In some cases, the network may configure the maximum number of PDSCHs that the UE may receive on each SPS opportunity. Based on this configuration, once the UE has processed the maximum number of PDSCHs, the UE may stop processing PDSCHs in the SPS opportunity.
[0106] In some cases, the maximum number of configurations may be provided per SPS configuration.The number of configurations may be provided in the RRC configuration of the SPS or by DCI (eg, via an SPS activation DCI).
[0107] In some cases, the same time and frequency resource allocation may be applied to all PDSCHs on an SPS occasion (which simplifies processing and reduces signaling overhead). The periodicity and slot parameters in the existing SPS configuration may be used to determine the slot for the first PDSCH in the PDSCH (within the SPS occasion). As an alternative (or in addition), the network may configure a slot mode for the UE to receive the PDSCH. For example, the slot mode may indicate that the PDSCH may be received every two slots. In some cases, if no explicit configuration is provided, the PDSCH may be received in consecutive slots.
[0108] As noted above, hybrid scheduling involving a combination of dynamic scheduling and SPS-based scheduling can effectively handle jitter, and can also dynamically indicate the number of PDSCHs to accommodate variable XR service data sizes. In some cases, the start of the (media) frame data can be determined by detecting the DCI. In some cases, the DCI may have a compact format (e.g., with a smaller payload than other DCI formats). In some cases, the compact DCI may be a non-scheduled DCI (e.g., it does not convey UL or DL grants). The DCI may be delivered in the PDCCH or via the PDSCH (e.g., in additional padding bits). For a given SPS opportunity, the DCI content may indicate the amount (number of times) of PDSCH transmissions for the XR frame.
[0109] In some approaches to hybrid scheduling, a wake-up signal (WUS) may be used. For example, in a connected discontinuous reception (CDRX) mode, a WUS may be used to signal the UE. The UE may be configured to monitor for WUS within a WUS monitoring window. If a WUS is detected, the UE may wake up to monitor data transmission. Otherwise, if a WUS is not detected, the UE may return to (or remain in) a low power state (e.g., until a subsequent WUS monitoring opportunity).
[0110] Fig. 8A Depicted is an example timeline of hybrid PDSCH scheduling involving WUS in accordance with aspects of the present disclosure.
[0111] This example assumes that the network has configured multiple PDCCH monitoring opportunities in the WUS monitoring window for the UE to cope with jitter. As illustrated, there may be a fixed offset from the PDCCH monitoring opportunity (PMO) at which the WUS is sent to the start of the active time (e.g., CDRX on duration). The offset may provide the UE with enough time to prepare for processing during the active time. In some cases, if the UE capabilities support immediate processing, the offset may be zero. For example, a zero offset may be beneficial by allowing the UE to meet latency requirements. The offset may be configured by the network.
[0112] In some cases, the WUS itself may indicate the number of PDSCHs in the SPS opportunity. The UW may also indicate a delay to the start of the SPS opportunity. There are various possible mechanisms to distinguish the WUS for hybrid scheduling (for example, from the WUS for non-XR UEs) to address the different needs of the UE. For example, the WUS for hybrid scheduling can be distinguished by a new radio network temporary identifier (RNTI) used to scramble part of the WUS. For UEs that need to receive XR services, the WUS can also be distinguished by different search space sets (SSS), different DCI sizes, or different DCI aggregation levels. Such UE types can be reported to the network from the UE, or can be configured by the network associated with other configurations for XR services.
[0113] like Figure 8B As illustrated, in some cases, at the beginning of the active time (after the UE wakes up as indicated by the WUS), the UE may monitor DCI indicating the number of PDSCHs sent in the SPS opportunity and possible delays to the start of the SPS opportunity. The DCI can help handle variable service data sizes to achieve UE power savings by indicating the number of PDSCHs sent on the SPS opportunity. With this approach, the UE may only need to (or sparsely) monitor the DCI once, because the data arrival time (with uncertainty due to jitter effects) is already indicated by the WUS PMO position where the WUS is detected.
[0114] Figure 8C An example timeline of hybrid PDSCH scheduling without WUS according to various aspects of the present disclosure is depicted. In this example, a hybrid scheduling DCI is used to indicate DL data transmission for multiple PDSCH opportunities in an SPS opportunity. In some cases, a relatively dense PMO may be configured for the UE to monitor such DCI (if conveyed in the PDCCH) to detect data arrival times in the presence of jitter. This (no WUS) approach may assume that if the UE does not detect a hybrid scheduling DCI, the UE may skip the CDRX wake-up. In this way, if the network does not have XR data, as indicated by the DCI, the UE will not wake up (or remain awake).
[0115] In some cases, the UE may determine a hybrid automatic repeat request (HARQ) process ID configured for the first PDSCH in the PDSCH to be monitored in the SPS opportunity based on one or more factors. For example, the HARQ ID may be determined by the time slot number used for the PDSCH transmission on the SPS opportunity based on a formula such as the following:
[0116] HARQ process ID = [floor (CURRENT_slot × 10 / (numberOfSlotsPerFrame × periodicity))] modulo nrofHARQ-Processes, CURRENT_slot = [(SFN × numberOfSlotsPerFrame) + timeslot number in the frame].
[0117] In some cases, for hybrid scheduling DCI, the HARQ process ID sent by the first PDSCH (of multiple PDSCH opportunities in an SPS opportunity) can be determined by several methods. According to the first method, the HARQ process ID can be determined by the time slot number of the first PDSCH opportunity according to the existing SPS HARQ ID process ID formula. According to the second method, the HARQ process ID can be a fixed value or a value configured by an RRC message. According to the third method, the HARQ process ID can be indicated by the DCI. Within the SPS opportunity, the HARQ process ID can be incremented by 1 for each subsequent PDSCH opportunity.
[0118] In some cases, the DCI may include a HARQ ID skip bitmap indicating HARQ IDs that can be skipped. In such cases, the bitmap may have a bit for each HARQ ID assigned to the SPS (e.g., which may be determined by nrofHARQ-Processes), then the HARQ ID may be incremented by more than 1 for the next PDSCH opportunity (if the HARQ ID is skipped). For example, for a PDSCH that was (earlier) determined to be unsuccessfully received, the skipped HARQ ID may be available for the network to send a retransmission.
[0119] In some cases, the DCI may contain other information, such as a redundancy version (RV) bitmap or a new data indication (NDI) bitmap for the number of PDSCHs. For example, if only the first retransmission is allowed for XR data (e.g., if the retransmission is associated with a fixed RV and there is no need to indicate the RV for the retransmission), such a bitmap may include one bit for the RV or NDI for each PDSCH opportunity.
[0120] In some cases, the XR arrival timing uncertainty (jitter effect) can be considered to be effectively similar to the random start of the channel occupancy time (COT) for channel access in unlicensed spectrum, such as NR unlicensed (NR-U) spectrum. NR-U typically relies on SSS group (SSSG) switching to switch between mini-slot-based PDCCH monitoring outside the COT and slot-based PDCCH monitoring within the COT. A shorter PDCCH monitoring periodicity outside the COT may be required because waiting for a slot boundary carries the risk of losing the medium (to another device). In this case, the first SSSG (e.g., SSSG#0) can be used as the default SSSG for mini-slot-based PDCCH monitoring.
[0121] like Fig. 9 As illustrated, the SSG switching from the default SSSG to another SSSG may be based on various conditions. For example, the switching to the second SSSG (SSSG#1) may be explicitly triggered by a bit (=1) in the DCI (e.g., DCI format 2) or via the detection of the DCI format in the default SSSG (SSSG#0). The UE may return (switch back to the default SSSG (e.g., SSG#0)) based on an explicit indication, expiration of a timer, or at the end of the COT.
[0122] In some cases, the SSSG switching mechanism can be extended to switch between different behaviors for PDCCH monitoring adaptation, for example, applicable to type 3-PDCCH common search space (CSS) and UE-specific search space (USS). Such behaviors may include, for example, PDCCH skipping and PDCCH non-skipping and SSSG switching between default group 0 and one of group 1 and group 2.
[0123] If the hybrid scheduling DCI is designed to indicate the number of upcoming PDSCHs for SPS opportunities (e.g., according to Figure 8B ), a similar mechanism may be adopted. In this case, the UE may enter an on-duration (active time) to monitor the DCI for receiving XR data. Once the DCI is detected, the UE may stop monitoring the DCI for a certain duration, and the UE will monitor the PDSCH. In other words, the UE may not need to monitor other unicast scheduled DCIs for the duration.
[0124] In some cases, the hybrid scheduling DCI may enable SSSG switching or PDCCH skipping. In this case, the SSSG switching time or PDCCH skipping time may be determined according to various options. For example, according to a first option, the time may be the same as the duration for the UE to monitor the PDSCH opportunity for the SPS opportunity, and the DCI may indicate that there is no PDCCH to be received during the DRX active time. According to a second option, the time may be configured by RRC. According to a third option, the time may be explicitly indicated by the DCI (e.g., using a certain number of bits). In some cases, for SSSG switching, monitoring of the hybrid scheduling DCI (in the PDCCH) may be associated with one of the SSSGs (e.g., the default SSSG#0) in the SSSG.
[0125] Example Operation of User Equipment
[0126] Fig.10 shows a method for use by a UE such as Figure 1 and Figure 3 An example of a method 1000 for UE 104 to perform wireless communications.
[0127] Method 1000 begins at step 1005, namely receiving signaling for the configuration of an SPS opportunity for receiving a PDSCH. In some cases, the operation of this step refers to the following steps: Fig.12 The described circuits for receiving and / or codes for receiving may be or may be executed by the circuits and / or codes.
[0128] Method 1000 then proceeds to step 1010, which is to determine the number of PDSCHs to monitor in the SPS opportunity. In some cases, the operation of this step refers to the operation of Fig.12 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.
[0129] Method 1000 then proceeds to step 1015, that is, based on the determination, monitoring the PDSCH in the SPS opportunity. In some cases, the operation of this step refers to the following Fig.12The described circuits for monitoring and / or codes for monitoring may be or may be executed by the circuits and / or the codes.
[0130] In some aspects, the method 1000 further includes receiving signaling indicating a maximum number of PDSCHs that the UE may expect to receive at each SPS opportunity. In some cases, the operation of this step refers to the following steps: Fig.12 The described circuits for receiving and / or codes for receiving may be or may be executed by the circuits and / or codes.
[0131] In some aspects, the monitoring includes: monitoring the PDSCH until the maximum number of PDSCHs within the SPS opportunity has been processed; and terminating the monitoring within the SPS opportunity after the maximum number of PDSCHs within the SPS opportunity has been processed.
[0132] In some aspects, this maximum number of PDSCHs is signaled per SPS opportunity.
[0133] In some aspects, the maximum number of PDSCHs is signaled via at least one of: the configuration for SPS opportunities or a DCI.
[0134] In some aspects, the configuration indicates periodicity and time slot parameters used to determine a time slot for a first PDSCH of the number of PDSCHs to monitor.
[0135] In some aspects, the method 1000 further includes receiving signaling indicating a slot mode for receiving the number of PDSCHs in the SPS opportunity. In some cases, the operation of this step refers to as described in reference Fig.12 The described circuits for receiving and / or codes for receiving may be or may be executed by the circuits and / or codes.
[0136] In some aspects, the method 1000 further includes receiving signaling indicating a configured opportunity in which data can be scheduled at the SPS opportunity. In some cases, the operation of this step refers to the operation of Fig.12 The described circuits for receiving and / or codes for receiving may be or may be executed by the circuits and / or codes.
[0137] In some aspects, the number of PDSCHs to monitor in an SPS opportunity is determined based on signaling received in or before one of the preconfigured opportunities.
[0138] In some aspects, the timing of the configuration is within a WUS monitoring window.
[0139] In some aspects, the WUS indicates at least one of: the number of PDSCHs to monitor in the SPS opportunity; or a delay to the start of the SPS opportunity.
[0140] In some aspects, the method 1000 further includes receiving a WUS indicating that the PDCCH is transmitted in one of the configured opportunities. In some cases, the operation of this step refers to as described in reference Fig.12 The described circuits for receiving and / or codes for receiving may be or may be executed by the circuits and / or codes.
[0141] In some aspects, the method 1000 further includes receiving the PDCCH indicated by the WUS, wherein the PDCCH indicates at least one of: the number of PDSCHs to be monitored in the SPS opportunity; or a delay in the start of the SPS opportunity. In some cases, the operation of this step refers to as described in reference Fig.12 The described circuits for receiving and / or codes for receiving may be or may be executed by the circuits and / or codes.
[0142] In some aspects, the PDCCH in one of the configured opportunities indicates at least one of: the number of PDSCHs to be monitored in the SPS opportunity; or a delay in the start of the SPS opportunity, and one or more PMOs are configured in the configured opportunity for the UE to monitor DCI.
[0143] In some aspects, the HARQ process ID configured for the first PDSCH in the PDSCH to be monitored in the SPS opportunity is determined based on: the timeslot number of the first PDSCH in the PDSCH; a fixed value; or an indication in the DCI.
[0144] In some aspects, the DCI contains a bitmap indicating HARQ IDs that can be skipped.
[0145] In some aspects, the DCI includes, for the number of PDSCHs, at least one of: an RV bitmap; or an NDI bitmap.
[0146] In some aspects, the DCI indicates at least one of: SSSG switching; or PDCCH skipping.
[0147] In some aspects, the timing for the SSSG switching or PDCCH skipping is based on at least one of: a duration that the UE monitors the PDSCH within the SPS opportunity; an RRC configuration; or an indication in the DCI.
[0148] In one aspect, method 1000 or any aspect related thereto may be performed by an apparatus such as Fig.12 The method 1000 is performed by a communication device 1200, which includes various components that are operable to, configured to, or adapted to perform the method 1000. The communication device 1200 is described in more detail below.
[0149] It should be noted that Fig.10 This is merely one example of a method, and other methods including fewer, additional, or alternative steps are possible consistent with the present disclosure.
[0150] Example Operations of Network Entities
[0151] Fig.11 shows a method for use by network entities such as Figure 1 and Figure 3 BS102 or as relative to Figure 2 An example of a method 1100 of performing wireless communications with a decomposed base station is discussed.
[0152] Method 1100 begins at step 1105, namely sending signaling to configure the UE for an SPS opportunity, the SPS opportunity being used to receive the PDSCH. In some cases, the operation of this step refers to the following Fig.13 The described circuits for transmitting and / or codes for transmitting, or may be executed by the circuits and / or the codes.
[0153] Method 1100 then proceeds to step 1110, which is to determine the number of PDSCHs that the UE is to monitor during the SPS opportunity. In some cases, the operation of this step refers to the following steps: Fig.13 The described circuits for determining and / or codes for determining may be performed by or may be executed by the circuits and / or the codes.
[0154] Method 1100 then proceeds to step 1115, that is, based on the determination, sending the PDSCH in the SPS opportunity. In some cases, the operation of this step refers to the following Fig.13 The described circuits for transmitting and / or codes for transmitting, or may be executed by the circuits and / or the codes.
[0155] In some aspects, the method 1100 further includes sending signaling indicating a maximum number of PDSCHs that the UE may expect to receive at each SPS opportunity. In some cases, the operation of this step refers to the following steps: Fig.13 The described circuits for transmitting and / or codes for transmitting, or may be executed by the circuits and / or the codes.
[0156] In some aspects, the sending includes sending the PDSCH until the maximum number of PDSCHs within the SPS opportunity has been processed.
[0157] In some aspects, this maximum number of PDSCHs is signaled per SPS opportunity.
[0158] In some aspects, the maximum number of PDSCHs is signaled via at least one of: the configuration for SPS opportunities or a DCI.
[0159] In some aspects, the configuration indicates periodicity and time slot parameters used to determine a time slot for a first PDSCH of the number of PDSCHs to monitor.
[0160] In some aspects, the method 1100 further includes sending signaling indicating a slot mode for receiving the number of PDSCHs in the SPS opportunity. In some cases, the operation of this step refers to as described in reference Fig.13 The described circuits for transmitting and / or codes for transmitting, or may be executed by the circuits and / or the codes.
[0161] In some aspects, the method 1100 further includes sending signaling indicating a configured opportunity in which data can be scheduled at the SPS opportunity. In some cases, the operation of this step refers to the operation of Fig.13 The described circuits for transmitting and / or codes for transmitting, or may be executed by the circuits and / or the codes.
[0162] In some aspects, the number of PDSCHs to monitor in an SPS opportunity is determined based on signaling received in or before one of the preconfigured opportunities.
[0163] In some aspects, the timing of the configuration is within a WUS monitoring window.
[0164] In some aspects, the WUS indicates at least one of: the number of PDSCHs that the UE is to monitor in the SPS opportunity; or a delay to the start of the SPS opportunity.
[0165] In some aspects, the method 1100 further includes receiving a WUS indicating that the PDCCH is transmitted in one of the configured opportunities. In some cases, the operation of this step refers to as described in reference Fig.13 The described circuits for receiving and / or codes for receiving may be or may be executed by the circuits and / or codes.
[0166] In some aspects, the method 1100 further includes sending the PDCCH indicated by the WUS, wherein the PDCCH indicates at least one of: the number of PDSCHs to be monitored by the UE in the SPS opportunity; or a delay in the start of the SPS opportunity. In some cases, the operation of this step refers to as described in reference Fig.13 The described circuits for transmitting and / or codes for transmitting, or may be executed by the circuits and / or the codes.
[0167] In some aspects, the PDCCH in one of the configured occasions indicates at least one of: the number of PDSCHs to be monitored by the UE in the SPS occasion; or a delay in the start of the SPS occasion, and one or more PMOs are configured in the configured occasion for the UE to monitor DCI.
[0168] In some aspects, the HARQ process ID configured for the first PDSCH in the PDSCH to be monitored in the SPS opportunity is determined based on: the timeslot number of the first PDSCH in the PDSCH; a fixed value; or an indication in the DCI.
[0169] In some aspects, the DCI contains a bitmap indicating HARQ IDs that can be skipped.
[0170] In some aspects, the DCI includes, for the number of PDSCHs, at least one of: an RV bitmap; or an NDI bitmap.
[0171] In some aspects, the DCI indicates at least one of: SSSG switching; or PDCCH skipping.
[0172] In some aspects, the timing for the SSSG switching or PDCCH skipping is based on at least one of: a duration that the UE monitors the PDSCH within the SPS opportunity; an RRC configuration; or an indication in the DCI.
[0173] In one aspect, method 1100 or any aspect related thereto may be performed by an apparatus such as Fig.13 The method 1100 is performed by a communication device 1300, which includes various components that are operable to, configured to, or adapted to perform the method 1100. The communication device 1300 is described in more detail below.
[0174] It should be noted that Fig.11 This is merely one example of a method, and other methods including fewer, additional, or alternative steps are possible consistent with the present disclosure.
[0175] Example Communication Device
[0176] Fig.12 Depicted are aspects of an example communications device 1200. In some aspects, the communications device 1200 is user equipment, such as described above with respect to Figure 1 and Figure 3 UE 104 is described.
[0177] The communication device 1200 includes a processing system 1205 coupled to a transceiver 1255 (e.g., a transmitter and / or a receiver). The transceiver 1255 is configured to transmit and receive signals for the communication device 1200, such as the various signals described herein, via an antenna 1260. The processing system 1205 may be configured to perform processing functions for the communication device 1200, including processing signals received and / or to be transmitted by the communication device 1200.
[0178] The processing system 1205 includes one or more processors 1210. In various aspects, such as with respect to Figure 3 As described, the one or more processors 1210 may represent one or more of the receive processor 358, the transmit processor 364, the TX MIMO processor 366, and / or the controller / processor 380. The one or more processors 1210 are coupled to the computer-readable medium / memory 1230 via the bus 1250. In some aspects, the computer-readable medium / memory 1230 is configured to store instructions (e.g., computer-executable code) that, when executed by the one or more processors 1210, cause the one or more processors 1210 to perform operations with respect to the computer-readable medium / memory 1230. Fig.10 The described method 1000 or any aspect related thereto. It should be noted that references to a processor performing a function of the communication device 1200 may include one or more processors 1210 performing that function of the communication device 1200 .
[0179] In the depicted example, computer readable medium / memory 1230 stores code (e.g., executable instructions), such as code 1235 for receiving, code 1240 for determining, and code 1245 for monitoring. Processing of code 1235 for receiving, code 1240 for determining, and code 1245 for monitoring may cause communication device 1200 to perform operations relative to Fig.10 The described method 1000 or any aspect related thereto.
[0180] The one or more processors 1210 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 1230, including circuits such as circuits for receiving 1215, circuits for determining 1220, and circuits for monitoring 1225. Processing performed by the circuits for receiving 1215, circuits for determining 1220, and circuits for monitoring 1225 may cause the communication device 1200 to perform operations with respect to Fig.10 The described method 1000 or any aspect related thereto.
[0181] The various components of the communication device 1200 may be provided for performing Fig.10The described means of method 1000 or any aspect thereof. For example, means for sending, transmitting, or outputting for sending may include Figure 3 The transceiver 354 and / or antenna 352 of the exemplary UE 104, and / or Fig.12 The transceiver 1255 and antenna 1260 of the communication device 1200 in FIG. 1 may include Figure 3 The illustrated transceiver 354 and / or antenna 352 and / or Fig.12 The transceiver 1255 and antenna 1260 of the communication device 1200.
[0182] Fig.13 Aspects of an example communications device 1300 are depicted. In some aspects, communications device 1300 is a network entity such as Figure 1 and Figure 3 BS102 or as relative to Figure 2 The decomposed base station in question.
[0183] The communication device 1300 includes a processing system 1305 coupled to a transceiver 1355 (e.g., a transmitter and / or a receiver) and / or a network interface 1365. The transceiver 1355 is configured to transmit and receive signals for the communication device 1300 via an antenna 1360, such as the various signals described herein. The network interface 1365 is configured to transmit and receive signals for the communication device 1300 via a communication link (such as the various signals described herein with respect to Figure 2 The processing system 1305 may be configured to perform processing functions of the communication device 1300, including processing signals received and / or to be transmitted by the communication device 1300.
[0184] The processing system 1305 includes one or more processors 1310. In various aspects, such as with respect to Figure 3 As described, the one or more processors 1310 may represent one or more of the receive processor 338, the transmit processor 320, the TX MIMO processor 330, and / or the controller / processor 340. The one or more processors 1310 are coupled to the computer-readable medium / memory 1330 via the bus 1350. In some aspects, the computer-readable medium / memory 1330 is configured to store instructions (e.g., computer-executable code) that, when executed by the one or more processors 1310, cause the one or more processors 1310 to perform operations relative to the computer-readable medium / memory 1330. Fig.11 The described method 1100 or any aspect related thereto. It should be noted that references to a processor of the communication device 1300 that performs a function may include one or more processors 1310 of the communication device 1300 that perform that function.
[0185] In the depicted example, computer readable medium / memory 1330 stores code (e.g., executable instructions), such as code for transmitting 1335, code for determining 1340, and code for receiving 1345. Processing of code for transmitting 1335, code for determining 1340, and code for receiving 1345 may cause communication device 1300 to perform operations with respect to Fig.11 The described method 1100 or any aspect related thereto.
[0186] The one or more processors 1310 include circuits configured to implement (e.g., execute) code stored in the computer-readable medium / memory 1330, including circuits such as circuits for transmitting 1315, circuits for determining 1320, and circuits for receiving 1325. Processing performed by the circuits for transmitting 1315, circuits for determining 1320, and circuits for receiving 1325 may cause the communication device 1300 to perform operations such as those described above with respect to FIG. Fig.11 The described method 1100 or any aspect related thereto.
[0187] The various components of the communication device 1300 may be provided for performing the following operations: Fig.11 Means for sending, transmitting, or outputting for sending may include: Figure 3 The illustrated transceiver 332 and / or antenna 334 and / or Fig.13 The transceiver 1355 and antenna 1360 of the communication device 1300 in FIG. 1 may include Figure 3 The illustrated transceiver 332 and / or antenna 334 and / or Fig.13 The transceiver 1355 and antenna 1360 of the communication device 1300 in FIG.
[0188] Sample Clauses
[0189] Specific implementation examples are described in the following numbered clauses:
[0190] Clause 1: A method for wireless communication by a UE, the method comprising: receiving signaling for configuration of an SPS opportunity, the SPS opportunity being used to receive a PDSCH; determining a number of PDSCHs to be monitored in the SPS opportunity; and monitoring the PDSCH in the SPS opportunity based on the determination.
[0191] Clause 2: The method of clause 1, further comprising: receiving signaling indicating a maximum number of PDSCHs per SPS opportunity that the UE may desire to receive.
[0192] Clause 3: The method according to Clause 2, wherein the monitoring comprises: monitoring the PDSCH until the maximum number of PDSCHs within the SPS opportunity has been processed; and terminating the monitoring within the SPS opportunity after the maximum number of PDSCHs within the SPS opportunity has been processed.
[0193] Clause 4: The method of clause 2, wherein the maximum number of PDSCHs is signaled per SPS opportunity.
[0194] Clause 5: The method of clause 2, wherein the maximum number of PDSCHs is signaled via at least one of: the configuration for SPS opportunities or a DCI.
[0195] Clause 6: A method as described in clause 2, wherein the configuration indicates periodicity and time slot parameters for determining a time slot in which a first PDSCH of the number of PDSCHs is to be monitored.
[0196] Clause 7: The method of clause 2, further comprising: receiving signaling indicating a slot pattern for receiving the number of PDSCHs in the SPS opportunity.
[0197] Clause 8: According to the method described in any one of clauses 1 to 7, the method further includes: receiving signaling indicating a configured timing in which data can be scheduled on the SPS timing; and the number of PDSCHs to be monitored in the SPS timing is determined based on signaling received in one of the pre-configured timings or before it.
[0198] Clause 9: The method of clause 8, wherein the timing of the configuration is within a WUS monitoring window.
[0199] Clause 10: A method as described in clause 9, wherein the WUS indicates at least one of: the number of PDSCHs to monitor in the SPS opportunity; or a delay to the start of the SPS opportunity.
[0200] Clause 11: The method according to Clause 9 further includes: receiving a WUS, the WUS indicating that a PDCCH is to be sent at one of the configured timings; and receiving the PDCCH indicated by the WUS, wherein the PDCCH indicates at least one of: the number of PDSCHs to be monitored at the SPS timing; or a delay in the start of the SPS timing.
[0201] Clause 12: A method according to clause 8, wherein the PDCCH in one of the configured occasions indicates at least one of the following: the number of PDSCHs to be monitored in the SPS occasion; or a delay in the start of the SPS occasion, and one or more PMOs are configured in the configured occasion for the UE to monitor DCI.
[0202] Clause 13: A method according to clause 12, wherein the HARQ process ID configured for the first PDSCH in the PDSCH to be monitored in the SPS opportunity is determined based on: the time slot number of the first PDSCH in the PDSCH; a fixed value; or an indication in the DCI.
[0203] Clause 14: The method of clause 13, wherein the DCI includes a bitmap indicating HARQ IDs that can be skipped.
[0204] Clause 15: A method as described in clause 13, wherein for the number of PDSCHs, the DCI comprises at least one of: an RV bitmap; or an NDI bitmap.
[0205] Clause 16: A method as set forth in clause 12, wherein the DCI indicates at least one of: SSSG switching; or PDCCH skipping.
[0206] Clause 17: A method according to clause 16, wherein the timing for the SSSG switching or PDCCH skipping is based on at least one of: the duration that the UE monitors the PDSCH within the SPS opportunity; an RRC configuration; or an indication in the DCI.
[0207] Clause 18: A method for wireless communication by a network entity, the method comprising: sending signaling to configure a UE for an SPS opportunity, the SPS opportunity being used to receive a PDSCH; determining a number of PDSCHs to be monitored by the UE in the SPS opportunity; and sending the PDSCH in the SPS opportunity based on the determination.
[0208] Clause 19: A method as described in clause 18, the method further comprising: sending signaling indicating a maximum number of PDSCHs per SPS opportunity that the UE may expect to receive.
[0209] Clause 20: A method as described in clause 19, wherein the sending comprises: sending the PDSCH until the maximum number of PDSCHs within the SPS opportunity has been processed.
[0210] Clause 21: A method as set forth in clause 19, wherein the maximum number of PDSCHs is signaled per SPS opportunity.
[0211] Clause 22: A method as set forth in clause 19, wherein the maximum number of PDSCHs is signaled via at least one of: the configuration for SPS opportunities or a DCI.
[0212] Clause 23: A method as described in clause 19, wherein the configuration indicates periodicity and time slot parameters for determining a time slot in which a first PDSCH of the number of PDSCHs is to be monitored.
[0213] Clause 24: The method of clause 19, further comprising: sending signaling indicating a slot pattern for receiving the number of PDSCHs in the SPS opportunity.
[0214] Clause 25: According to the method described in any one of clauses 18 to 24, the method further includes: sending signaling indicating a configured timing in which data can be scheduled on the SPS timing; and the number of PDSCHs to be monitored in the SPS timing is determined based on signaling received in one of the pre-configured timings or before it.
[0215] Clause 26: The method of clause 25, wherein the timing of the configuration is within a WUS monitoring window.
[0216] Clause 27: A method as described in clause 26, wherein the WUS indicates at least one of: the number of PDSCHs to be monitored by the UE in the SPS opportunity; or a delay to the start of the SPS opportunity.
[0217] Clause 28: The method according to Clause 26 further includes: receiving a WUS, the WUS indicating the sending of a PDCCH at one of the configured timings; and sending the PDCCH indicated by the WUS, wherein the PDCCH indicates at least one of the following: the number of PDSCHs to be monitored by the UE at the SPS timing; or a delay in the start of the SPS timing.
[0218] Clause 29: A method according to clause 25, wherein the PDCCH in one of the configured occasions indicates at least one of the following: the number of PDSCHs to be monitored by the UE in the SPS occasion; or a delay in the start of the SPS occasion, and one or more PMOs are configured in the configured occasion for the UE to monitor DCI.
[0219] Clause 30: A method according to clause 29, wherein the HARQ process ID configured for the first PDSCH in the PDSCH to be monitored in the SPS opportunity is determined based on: the time slot number of the first PDSCH in the PDSCH; a fixed value; or an indication in the DCI.
[0220] Clause 31: The method of clause 30, wherein the DCI includes a bitmap indicating HARQ IDs that can be skipped.
[0221] Clause 32: A method as set forth in clause 30, wherein for said number of PDSCHs, said DCI comprises at least one of: an RV bitmap; or an NDI bitmap.
[0222] Clause 33: The method of clause 29, wherein the DCI indicates at least one of: SSSG switching; or PDCCH skipping.
[0223] Clause 34: A method according to clause 33, wherein the timing for the SSSG switching or PDCCH skipping is based on at least one of: the duration that the UE monitors the PDSCH within the SPS opportunity; an RRC configuration; or an indication in the DCI.
[0224] Clause 35: An apparatus comprising: a memory including executable instructions; and a processor configured to execute the executable instructions and cause the apparatus to perform the method of any one of clauses 1 to 34.
[0225] Clause 36: An apparatus comprising means for performing the method of any one of clauses 1 to 34.
[0226] Clause 37: A non-transitory computer readable medium comprising executable instructions which, when executed by a processor of an apparatus, cause the apparatus to perform the method of any one of clauses 1 to 34.
[0227] Clause 38: A computer program product embodied on a computer readable storage medium, the computer program product comprising code for performing the method according to any one of clauses 1 to 34.
[0228] Additional considerations
[0229] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. The examples discussed herein are not limited to the scope, applicability or aspects set forth in the claims. Various modifications to these aspects will be apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. For example, without departing from the scope of the present disclosure, the functions and arrangements of the elements discussed may be changed. Each example may ignore, replace or add each procedure or component as appropriate. For example, the described method may be performed in a different order than the described order, and various actions may be added, omitted or combined. In addition, the features described for some examples may be combined in some other examples. For example, any number of aspects set forth herein may be used to implement a device or practice method. In addition, the scope of the present disclosure is intended to cover such devices or methods practiced using other structures, functionality, or structures and functionality that are supplemented or substituted for the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the present invention.
[0230] The various illustrative logical blocks, modules, and circuits described in conjunction with the present disclosure may be implemented or performed using a general purpose processor, a digital signal processor (DSP), an ASIC, a field programmable gate array (FPGA) or other programmable logic device (PLD), discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. A general purpose processor may be a microprocessor, but in an alternative, the processor may be any commercially available processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, a system on a chip (SoC), or any other such configuration.
[0231] As used herein, a phrase referring to "at least one of" a list of items refers to any combination of those items (including single members). As an example, "at least one of a, b, or c" is intended to cover a, b, c, ab, ac, bc, and abc, 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).
[0232] As used herein, the term "determining" encompasses a wide variety of actions. For example, "determining" may include calculating, computing, processing, deriving, investigating, searching (e.g., searching in a table, a database, or another data structure), ascertaining, and the like. Moreover, "determining" may include receiving (e.g., receiving information), accessing (e.g., accessing data in a memory), and the like. In addition, "determining" may include resolving, selecting, choosing, establishing, and the like.
[0233] The method disclosed herein includes one or more actions for implementing the method. The method actions can be interchangeable with each other without departing from the scope of the claims. In other words, unless a specific order of actions is specified, the order and / or use of specific actions can be modified without departing from the scope of the claims. In addition, the various operations of the method described above can be performed by any appropriate component that can perform the corresponding function. The component may include various hardware and / or software components and / or modules, including but not limited to circuits, application specific integrated circuits (ASICs) or processors.
[0234] The following claims are not intended to be limited to the various aspects shown herein, but should be given the full scope consistent with the language of the claims. Within the claims, unless otherwise specified, reference to an element in the singular form is not intended to mean "one and only one", but "one or more". Unless otherwise specified, the term "some" refers to one or more. Any claim element is not interpreted according to the provisions of 35 U.S.C. § 112 (f) unless the element is explicitly stated using the phrase "member for...". All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure that are known or will be known later to a person of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims.
Claims
1. A method for wireless communication by a user equipment (UE), the method comprising: receiving signaling for configuration of a semi-persistent scheduling (SPS) opportunity for receiving a physical downlink shared channel (PDSCH); determining a number of PDSCHs to monitor in an SPS opportunity; and Based on the determination, a PDSCH is monitored in the SPS opportunity.
2. The method according to claim 1, further comprising: Receive signaling indicating a maximum number of PDSCHs that the UE may expect to receive at each SPS opportunity.
3. The method of claim 2, wherein the monitoring comprises: monitoring the PDSCH until the maximum number of PDSCHs within the SPS opportunity has been processed; as well as Monitoring within the SPS opportunity is terminated after the maximum number of PDSCHs within the SPS opportunity has been processed. The method according to claim 2 , wherein the maximum number of PDSCHs is signaled per SPS opportunity.
5. The method of claim 2, wherein the maximum number of PDSCHs is signaled via at least one of: the configuration for SPS opportunities or downlink control information (DCI).
6. The method of claim 2, wherein the configuration indicates periodicity and time slot parameters for determining a time slot for monitoring a first PDSCH of the number of PDSCHs.
7. The method according to claim 2, further comprising: Signaling is received, the signaling indicating a slot mode for receiving the number of PDSCHs in the SPS opportunity.
8. The method according to claim 1, further comprising: receiving signaling indicating a configured opportunity in which data can be scheduled on the SPS opportunity; as well as The number of PDSCHs to be monitored in SPS opportunities is determined based on signaling received in or before one of the SPS opportunities. 9 . The method according to claim 8 , wherein the timing of the configuration is within a wake-up signal (WUS) monitoring window.
10. The method of claim 9, wherein the WUS indicates at least one of the following: said number of PDSCHs to monitor in said SPS opportunity; or A delay to the start of the SPS opportunity.
11. The method according to claim 9, further comprising: receiving a WUS indicating that a physical downlink control channel (PDCCH) is transmitted in one of the configured timings; as well as receiving the PDCCH indicated by the WUS, wherein the PDCCH indicates at least one of the following: said number of PDSCHs to monitor in said SPS opportunity; or A delay to the start of the SPS opportunity.
12. The method of claim 8, wherein a physical downlink control channel (PDCCH) in one of the configured occasions indicates at least one of the following: said number of PDSCHs to monitor in said SPS opportunity; or The start of the SPS opportunity is delayed, and one or more physical downlink control channel (PDCCH) monitoring opportunities (PMOs) are configured in the configured opportunities for the UE to monitor downlink control information (DCI).
13. The method of claim 12, wherein a hybrid automatic repeat request (HARQ) process ID configured for a first PDSCH in the PDSCH to be monitored in the SPS opportunity is determined based on: The timeslot number of the first PDSCH in the PDSCH; a fixed value; or Indication in the DCI. The method of claim 13 , wherein the DCI includes a bitmap indicating HARQ IDs that can be skipped.
15. The method according to claim 13, wherein for the number of PDSCHs, the DCI comprises at least one of the following: Redundancy Version (RV) bitmap; or New Data Indicator (NDI) bitmap.
16. The method of claim 12, wherein the DCI indicates at least one of: Search Space Set Group (SSSG) switching; or PDCCH skipped.
17. The method of claim 16, wherein the timing for the SSSG switching or PDCCH skipping is based on at least one of: The duration for which the UE monitors the PDSCH during the SPS opportunity; Radio Resource Control (RRC) configuration; or Indication in the DCI.
18. A method for wireless communication by a network entity, the method comprising: Sending signaling to configure a user equipment (UE) for a semi-persistent scheduling (SPS) opportunity for receiving a physical downlink shared channel (PDSCH); determining a number of PDSCHs to be monitored by the UE in an SPS opportunity; and Based on the determination, a PDSCH is sent in the SPS opportunity.
19. The method according to claim 18, further comprising: Signaling is sent indicating a maximum number of PDSCHs that the UE may expect to receive at each SPS opportunity.
20. The method of claim 19, wherein the sending comprises: The PDSCH is sent until the maximum number of PDSCHs within the SPS opportunity has been processed.
21. The method of claim 19, wherein the maximum number of PDSCHs is signaled per SPS opportunity.
22. The method of claim 19, wherein the maximum number of PDSCHs is signaled via at least one of: a configuration for SPS opportunities or downlink control information (DCI).
23. The method of claim 19, wherein the signaling indicates periodicity and time slot parameters used to determine a time slot for monitoring a first PDSCH of the number of PDSCHs.
24. The method according to claim 19, further comprising: Signaling is sent, the signaling indicating a time slot mode for receiving the number of PDSCHs in the SPS opportunity.
25. The method of claim 18, further comprising: Sending signaling, the signaling indicating a configured opportunity in which data can be scheduled at the SPS opportunity; as well as The number of PDSCHs to be monitored in SPS opportunities is determined based on signaling received in or before one of the SPS opportunities.
26. The method of claim 25, wherein the timing of the configuration is within a wake-up signal (WUS) monitoring window.
27. The method of claim 25, wherein a physical downlink control channel (PDCCH) in one of the configured occasions indicates at least one of: the number of PDSCHs that the UE is to monitor in the SPS opportunity; or The start of the SPS opportunity is delayed, and one or more physical downlink control channel (PDCCH) monitoring opportunities (PMOs) are configured in the configured opportunities for the UE to monitor downlink control information (DCI).
28. The method of claim 27, wherein the DCI indicates at least one of: Search Space Set Group (SSSG) switching; or PDCCH skipped.
29. A user equipment (UE) configured for wireless communication, the user equipment (UE) comprising: a memory including computer executable instructions; and one or more processors configured to execute the computer-executable instructions and cause the UE to: receiving signaling for configuration of a semi-persistent scheduling (SPS) opportunity for receiving a physical downlink shared channel (PDSCH); determining a number of PDSCHs to monitor in an SPS opportunity; and Based on the determination, a PDSCH is monitored in the SPS opportunity.
30. A network entity configured for wireless communication, the network entity comprising: a memory including computer executable instructions; and one or more processors configured to execute the computer executable instructions and cause the network entity to: Sending signaling to configure a user equipment (UE) for a semi-persistent scheduling (SPS) opportunity for receiving a physical downlink shared channel (PDSCH); determining a number of PDSCHs to be monitored by the UE in an SPS opportunity; and Based on the determination, a PDSCH is sent in the SPS opportunity.