Processing of two-stage downlink control information

Abstract

Various aspects of the disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) can receive a first downlink control information (DCI) and a second DCI that together schedule a communication of the UE, where the second DCI is received using a default beam or according to a minimum scheduling offset. The UE can transmit or receive the communication based at least in part on the first DCI and the second DCI. Numerous other aspects are provided.

Description

Technical Field

[0001] Various aspects of this disclosure generally relate to wireless communications, and specifically to techniques and apparatus for processing two-stage downlink control information (DCI). Background Technology

[0002] Wireless communication systems are widely deployed to provide a variety of telecommunications services such as telephone, video, data, messaging, and broadcasting. Typical wireless communication systems employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power). Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single Carrier Frequency Division Multiple Access (SC-FDMA) systems, Time Division Synchronous Code Division Multiple Access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE / LTE-Advanced is an enhancement set of the Universal Mobile Telecommunications System (UMTS) mobile standard issued by the 3rd Generation Partnership Project (3GPP).

[0003] A wireless network may include several base stations (BSs) capable of supporting communication between several user equipments (UEs). UEs can communicate with the base stations (BSs) via downlinks and uplinks. A downlink (or forward link) refers to the communication link from the BS to the UE, while an uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, a BS may be referred to as a B-node, gNB, access point (AP), radio headend, transmit / receive point (TRP), new radio (NR) BS, 5G B-node, etc.

[0004] The multiple access technologies mentioned above have been adopted in various telecommunications standards to provide a common protocol enabling different user equipment to communicate at the city, country, region, and even global levels. New Radio (NR) (also known as 5G) is an enhancement set to the LTE mobile standard issued by the 3rd Generation Partnership Project (3GPP). NR is designed to better support mobile broadband internet access by using Orthogonal Frequency Division Multiplexing (OFDM) with a Cyclic Prefix (CP) (CP-OFDM) on the downlink (DL), and CP-OFDM and / or SC-FDM (e.g., also known as Discrete Fourier Transform Extended OFDM (DFT-s-OFDM)) on the uplink (UL), as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technologies and carrier aggregation to improve spectral efficiency, reduce costs, improve service, utilize new spectrum, and better integrate with other open standards. Further improvements to LTE, NR, and other radio access technologies remain useful as the demand for mobile broadband access continues to grow. Summary of the Invention

[0005] In some aspects, a wireless communication method performed by a user equipment (UE) may include: receiving a first downlink control information (DCI) and a second DCI that coordinate communications of the UE, wherein the second DCI is received using a default beam or according to a minimum scheduling offset; and transmitting or receiving communications based at least in part on the first DCI and the second DCI.

[0006] In some aspects, a wireless communication method performed by a base station may include: transmitting a first DCI and a second DCI that coordinate communications of a UE together, wherein the second DCI is transmitted using a default beam or according to a minimum scheduling offset; and transmitting or receiving communications based at least in part on the first DCI and the second DCI.

[0007] In some aspects, a UE for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: receive a first DCI and a second DCI that schedule the UE’s communications together, wherein the second DCI is received using a default beam or according to a minimum scheduling offset; and to transmit or receive communications based at least in part on the first DCI and the second DCI.

[0008] In some aspects, a base station for wireless communication may include a memory and one or more processors operatively coupled to the memory. The memory and the one or more processors may be configured to: transmit a first DCI and a second DCI that together schedule communications of a UE, wherein the second DCI is transmitted using a default beam or according to a minimum scheduling offset; and transmit or receive communications based at least in part on the first DCI and the second DCI.

[0009] In some aspects, a non-transient computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of the UE, the one or more processors may cause the processors to: receive a first DCI and a second DCI that together schedule communication for the UE, wherein the second DCI is received using a default beam or according to a minimum scheduling offset; and transmit or receive communication at least in part based on the first DCI and the second DCI.

[0010] In some aspects, a non-transient computer-readable medium may store one or more instructions for wireless communication. When executed by one or more processors of a base station, the one or more processors may cause the processors to: transmit a first DCI and a second DCI that together schedule communications of the UE, wherein the second DCI is transmitted using a default beam or according to a minimum scheduling offset; and transmit or receive communications at least in part based on the first DCI and the second DCI.

[0011] In some aspects, a device for wireless communication may include: means for receiving a first DCI and a second DCI that coordinate communications of the device together, wherein the second DCI is received using a default beam or according to a minimum scheduling offset; and means for transmitting or receiving communications based at least in part on the first DCI and the second DCI.

[0012] In some aspects, an apparatus for wireless communication may include: means for transmitting a first DCI and a second DCI for co-scheduling communications of a UE, wherein the second DCI is transmitted using a default beam or according to a minimum scheduling offset; and means for transmitting or receiving communications based at least in part on the first DCI and the second DCI.

[0013] The aspects generally include, as substantially described herein with reference to the accompanying drawings and description, methods, apparatus, systems, computer program products, non-transient computer-readable media, user equipment, base stations, wireless communication equipment, and / or processing systems.

[0014] The foregoing has broadly outlined the features and technical advantages of the examples according to this disclosure in an effort to facilitate a better understanding of the following detailed description. Additional features and advantages will be described thereafter. The disclosed concepts and specific examples can be readily used as the basis for modifying or designing other structures for implementing the same purposes as this disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, in both their organization and manner of operation, and their associated advantages, will be better understood by considering the following description in conjunction with the accompanying drawings. Each drawing is provided for illustrative and descriptive purposes and not for defining limitations on the claims. Attached Figure Description

[0015] To gain a more detailed understanding of the features described above in this disclosure, reference can be made to various aspects of the above brief overview, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings illustrate only certain typical aspects of this disclosure and should not be considered as limiting its scope, as other equivalent aspects are permissible in this description. Identical reference numerals in different drawings may identify the same or similar elements.

[0016] Figure 1 This is a diagram illustrating examples of wireless networks according to various aspects of this disclosure.

[0017] Figure 2 This is a diagram illustrating an example of communication between a base station and a UE in a wireless network according to various aspects of this disclosure.

[0018] Figure 3 This is a diagram illustrating an example of a two-stage DCI according to various aspects of this disclosure.

[0019] Figure 4A and 4B It is a diagram illustrating one or more examples of processing associated with two-stage DCI according to various aspects of this disclosure.

[0020] Figure 5 and Figure 6 This is a diagram illustrating an example process associated with two-stage DCI processing according to various aspects of this disclosure. Detailed Implementation

[0021] The various aspects of this disclosure are described more fully below with reference to the accompanying drawings. However, this disclosure may be implemented in many different forms and should not be construed as being limited to any specific structure or function given throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of this disclosure to those skilled in the art. Based on the teachings herein, those skilled in the art will appreciate that the scope of this disclosure is intended to cover any aspect of this disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of this disclosure. For example, any number of aspects set forth herein may be used to implement an apparatus or method of practice. Furthermore, the scope of this disclosure is intended to cover such apparatus or methods practiced using additional structures, functionalities, or structures and functionalities that complement or supplement the various aspects of this disclosure set forth herein. It should be understood that any aspect of this disclosure disclosed herein may be implemented by one or more elements of the claims.

[0022] Several aspects of a telecommunications system will now be described with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and explained in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively, "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0023] It should be noted that although the aspects may be described herein using terms associated with 5G or NR radio access technology (RAT), the aspects of this disclosure may be applied to other RATs, such as 3G RAT, 4G RAT, and / or RATs after 5G (e.g., 6G).

[0024] Figure 1 This is a diagram illustrating an example of a wireless network 100 according to various aspects of this disclosure. The wireless network 100 may be a 5G (NR) network, an LTE network, etc., or may include elements thereof. The wireless network 100 may include several base stations 110 (shown as BS110a, BS110b, BS110c, and BS110d) and other network entities. A base station (BS) is an entity that communicates with a user equipment (UE) and may also be referred to as an NR BS, B-node, gNB, 5G B-node (NB), access point, transmit / receive point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to the coverage area of ​​a BS and / or the BS subsystem serving that coverage area, depending on the context in which the term is used.

[0025] A BS can provide communication coverage for macrocells, picocells, femtocells, and / or another type of cell. Macrocells can cover a relatively large geographic area (e.g., a radius of several kilometers) and allow unrestricted access by UEs with a service subscription. Picocells can cover a relatively small geographic area and allow unrestricted access by UEs with a service subscription. Femtocells can cover a relatively small geographic area (e.g., a residential area) and allow restricted access by UEs associated with that femtocell (e.g., UEs in a Closed Subscriber Group (CSG)). A BS used for macrocells may be referred to as a macro BS. A BS used for picocells may be referred to as a pico BS. A BS used for femtocells may be referred to as a femto BS or a home BS. Figure 1 In the example shown, BS110a can be a macro BS for macro cell 102a, BS110b can be a pico BS for pico cell 102b, and BS110c can be a femto BS for femto cell 102c. A BS can support one or more (e.g., three) cells. The terms “eNB,” “base station,” “NR BS,” “gNB,” “TRP,” “AP,” “B node,” “5G NB,” and “cell” are used interchangeably herein.

[0026] In some respects, the cell need not be stationary, and the geographical area of ​​the cell can move depending on the location of the mobile BS. In some respects, BSs can interconnect with each other and / or interconnect to one or more other BSs or network nodes (not shown) in the wireless network 100 using any suitable transport network through various types of backhaul interfaces (such as direct physical connections, virtual networks, etc.).

[0027] The wireless network 100 may also include a relay station. A relay station is an entity capable of receiving data transmissions from an upstream station (e.g., a BS or a UE) and transmitting those data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE capable of relaying transmissions for other UEs. Figure 1 In the example shown, relay station 110d can communicate with macro BS110a and UE 120d to facilitate communication between BS110a and UE 120d. A relay station may also be referred to as a relay BS, relay base station, relay, etc.

[0028] Wireless network 100 can be a heterogeneous network comprising different types of Base Stations (BSs) (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in wireless network 100. For example, macro BSs may have high transmit power levels (e.g., 5 to 40 watts), while pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1 to 2 watts).

[0029] Network controller 130 can be coupled to a set of Base Stations (BSs) and can provide coordination and control over these BSs. Network controller 130 can communicate with each BS via backhaul. These BSs can also communicate with each other directly or indirectly, for example, via wireless or wired backhaul.

[0030] UE 120 (e.g., 120a, 120b, 120c) may be distributed throughout the wireless network 100, and each UE may be stationary or mobile. UE may also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE may be a cellular phone (e.g., a smartphone), personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop computer, cordless phone, wireless local loop (WLL) station, tablet, camera, gaming device, netbook, smartbook, ultrabook, medical device or equipment, biometric sensor / device, wearable device (smartwatch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet)), entertainment device (e.g., music or video device, or satellite radio), vehicle component or sensor, smart meter / sensor, industrial manufacturing equipment, GPS device, or any other suitable device configured to communicate via wireless or wired media.

[0031] Some UEs can be considered Machine-Type Communication (MTC) UEs, or evolved or enhanced Machine-Type Communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc., which can communicate with a base station, another device (e.g., a remote device), or some other entity. Wireless nodes can provide connectivity to or to a network (e.g., a wide area network such as the Internet) or a cellular network, for example, via wired or wireless communication links. Some UEs can be considered Internet of Things (IoT) devices, and / or can be implemented as NB-IoT (Narrowband Internet of Things) devices. Some UEs can be considered Customer Premises Equipment (CPE). UE 120 can be included within a housing that houses the components of UE 120, such as processor components, memory components, etc. In some aspects, the processor components and memory components can be coupled together. For example, the processor components (e.g., one or more processors) and memory components (e.g., memory) can be operatively coupled, communicatively coupled, electronically coupled, electrically coupled, etc.

[0032] Generally, any number of wireless networks can be deployed in a given geographical area. Each wireless network can support a specific RAT and can operate on one or more frequencies. A RAT may also be referred to as a radio technology, air interface, etc. A frequency may also be referred to as a carrier, frequency channel, etc. Each frequency can support a single RAT in a given geographical area to avoid interference between wireless networks using different RATs. In some cases, NR or 5G RAT networks can be deployed.

[0033] In some respects, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using base station 110 as an intermediary). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, etc.), mesh networks, etc. In this scenario, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.

[0034] As indicated above, Figure 1 This is provided as an example. Other examples may differ from the one provided. Figure 1 The example described.

[0035] Figure 2 This is a diagram illustrating an example 200 of communication between a base station 110 and a UE 120 in a wireless network 100 according to various aspects of this disclosure. The base station 110 may be equipped with T antennas 234a to 234t, and the UE 120 may be equipped with R antennas 252a to 252r, wherein generally T≥1 and R≥1.

[0036] At base station 110, transmit processor 220 can receive data destined for one or more UEs from data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on the Channel Quality Indicator (CQI) received from each UE, process (e.g., encode and modulate) the data destined for each UE based at least in part on the MCS(s) selected for each UE, and provide data symbols for all UEs. Transmit processor 220 can also process system information (e.g., semi-static resource allocation information (SRPI) etc.) and control information (e.g., CQI requests, grants, upper-layer signaling, etc.), and provide overhead symbols and control symbols. Transmit processor 220 can also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)), demodulation reference signals (DMRS), etc.) and synchronization signals (e.g., primary synchronization signal (PSS) and secondary synchronization signal (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 can perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, where applicable, and can provide T output symbol streams to T modulators (MODs) 232a to 232t. Each modulator 232 can process its own output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 can further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t can be transmitted via T antennas 234a to 234t, respectively.

[0037] At UE 120, antennas 252a to 252r can receive downlink signals from base station 110 and / or other base stations and can provide the received signals to demodulators (DEMODs) 254a to 254r respectively. Each demodulator 254 can condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain an input sample. Each demodulator 254 can further process the input sample (e.g., for OFDM, etc.) to obtain received symbols. MIMO detector 256 can obtain the received symbols from all R demodulators 254a to 254r, perform MIMO detection on these received symbols where applicable, and provide detected symbols. Receiver processor 258 can process (e.g., demodulate and decode) these detected symbols, provide the decoded data for UE 120 to data sink 260, and provide the decoded control information and system information to controller / processor 280. The channel processor can determine the Reference Received Power (RSRP), Received Signal Strength Indicator (RSSI), Reference Received Quality (RSRQ), Channel Quality Indicator (CQI), and so on. In some respects, one or more components of the UE 120 may be included in the housing 284.

[0038] Network controller 130 may include communication unit 294, controller / processor 290, and memory 292. Network controller 130 may include one or more devices, such as those in the core network. Network controller 130 may communicate with base station 110 via communication unit 294.

[0039] On the uplink, at UE 120, transmit processor 264 can receive and process data from data source 262 and control information from controller / processor 280 (e.g., reports including RSRP, RSSI, RSRQ, CQI, etc.). Transmit processor 264 can also generate reference symbols for one or more reference signals. Symbols from transmit processor 264 can be pre-encoded by TX MIMO processor 266 where applicable, further processed by modulators 254a to 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to base station 110. In some aspects, UE 120 includes a transceiver. The transceiver may include (e.g.) antenna 252, modulator and / or demodulator 254, MIMO detector 256, receive processor 258, transmit processor 264, and / or any combination of TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller / processor 280) and memory 282 to perform aspects of any of the methods described herein, for example, as referenced Figure 4A , 4B As described in 5 and 6.

[0040] At base station 110, uplink signals from UE 120 and other UEs can be received by antenna 234, processed by demodulator 232, detected by MIMO detector 236 where applicable, and further processed by receiver processor 238 to obtain decoded data and control information transmitted by UE 120. Receiver processor 238 can provide the decoded data to data sink 239 and the decoded control information to controller / processor 240. Base station 110 may include communication unit 244 and communicate with network controller 130 via communication unit 244. Base station 110 may include scheduler 246 to schedule UE 120 for downlink and / or uplink communication. In some aspects, base station 110 includes a transceiver. The transceiver may include any combination of antenna 234, modulator and / or demodulator 232, MIMO detector 236, receiver processor 238, transmitter processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to perform aspects of any of the methods described herein, for example, as referenced Figure 4A , 4B As described in 5 and 6.

[0041] Figure 2 The controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or any other components may perform one or more techniques associated with the processing of two-phase downlink control information (DCI), as described in more detail elsewhere herein. For example, the controller / processor 240 of base station 110, the controller / processor 280 of UE 120, and / or Figure 2 Any other component that can execute or direct, for example Figure 5 Process 500 Figure 6 The operation of process 600 and / or other processes as described herein. Memory 242 and 282 may store data and program code for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include: a non-transitory computer-readable medium storing one or more instructions (e.g., code, program code, etc.) for wireless communication. For example, when these one or more instructions are executed by one or more processors of base station 110 and / or UE 120 (e.g., directly, or after compilation, translation, interpretation, etc.), they may cause the one or more processors, UE 120, and / or base station 110 to perform or direct, for example... Figure 5 Process 500 Figure 6 The process 600, and / or other processes as described herein. In some respects, the execution instructions may include run instructions, translate instructions, compile instructions, interpret instructions, etc.

[0042] In some aspects, UE 120 may include means for receiving a first DCI and a second DCI that are co-scheduled for communication of UE 120, wherein the second DCI is received using a default beam or according to a minimum scheduling offset, and means for transmitting or receiving communication at least in part based on the first DCI and the second DCI. In some aspects, such means may include a combination of Figure 2 One or more components of the described UE 120, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, etc.

[0043] In some aspects, base station 110 may include means for transmitting a first DCI and a second DCI for co-scheduling communications of the UE, wherein the second DCI is transmitted using a default beam or according to a minimum scheduling offset, and means for transmitting or receiving communications at least in part based on the first DCI and the second DCI. In some aspects, such means may include a combination of Figure 2One or more components of the described base station 110, such as antenna 234, DEMOD 232, MIMO detector 236, receiver processor 238, controller / processor 240, transmitter processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.

[0044] although Figure 2 The boxes in the diagram are interpreted as different components, but the functions described above with respect to these boxes can be implemented by a single hardware component, software component, or combination of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 can be performed by processor 280 or under the control of processor 280.

[0045] As indicated above, Figure 2 This is provided as an example. Other examples may differ from the one provided. Figure 2 The example described.

[0046] Figure 3 This is a diagram illustrating example 300 of a two-stage DCI according to various aspects of this disclosure. For example... Figure 3 As shown, two-stage DCI can be used to schedule UE's Physical Downlink Shared Channel (PDSCH) communication or Physical Uplink Shared Channel (PUSCH) communication. PDSCH communication or PUSCH communication may be referred to as PxSCH communication in this document.

[0047] like Figure 3 As shown, the first DCI 305 (DCI 1) and the second DCI 310 (DCI 2) can be used together to schedule the UE's PxSCH communication 315. The UE can receive the first DCI 305 in the Physical Downlink Control Channel (PDCCH) in the Control Resource Set (CORESET) (e.g., the first stage of a two-stage DCI). The UE can receive the first DCI 305 in a first timeslot (timeslot 1). The first DCI 305 may include scheduling information for PxSCH communication 315 (e.g., time and frequency information, beam information, etc.) and / or include scheduling information for the second DCI 310.

[0048] The UE may receive the second DCI 310 (e.g., the second stage of a two-stage DCI) in the PDSCH (e.g., based on scheduling information for the second DCI 310 in the first DCI 305). The UE may receive the second DCI 310 in a first timeslot (e.g., in the same timeslot as the first DCI 305). The second DCI 310 may also include scheduling information for PxSCH communication 315.

[0049] Accordingly, the scheduling information of the first DCI 305 and the scheduling information of the second DCI 310 can be used together to identify the scheduling for PxSCH communication 315. PxSCH communication 315 can be scheduled in a second time slot (time slot 2). That is, PxSCH communication 315 can be scheduled in a different time slot than the time slot in which the first DCI 305 and the second DCI 310 are received. Although Example 300 shows PxSCH communication 315 being scheduled in a second time slot, the timing of this PxSCH communication 315 can be in another time slot, such as the first time slot (time slot 1).

[0050] Wireless networks typically lack support for technologies that handle, schedule, or otherwise implement two-stage DCI. Specifically, the UE may be unable to determine the default beam for receiving the second DCI, unable to receive the second DCI based on the minimum scheduling offset, or unable to determine the timeline for processing the PUSCH scheduled by the two-stage DCI, etc. This can increase the complexity associated with handling two-stage DCI at the UE.

[0051] The techniques and apparatus described herein enable the processing of two-stage DCI. In some aspects, the UE can use a default beam or receive the second DCI of the two-stage DCI based on the minimum scheduling offset. In other aspects, the UE can process the PUSCH scheduled by the two-stage DCI according to the processing timeline. In this way, the two-stage DCI can be processed at the UE with reduced complexity, thereby saving computational resources, memory resources, etc.

[0052] As indicated above, Figure 3 This is provided as an example. Other examples may differ from the one provided. Figure 3 The example described.

[0053] Figure 4A and 4B This is a diagram illustrating one or more examples 400 related to the two-stage DCI process according to various aspects of this disclosure. For example... Figure 4A and 4B As shown, Example 400 includes base station 110 and UE 120. Although Example 400 shows UE 120 receiving two-stage DCI from a single base station 110, in some respects, UE 120 may receive the first and second stages of two-stage DCI from different base stations 110, different TRPs (e.g., co-located at the same base station 110 or located at different base stations 110), etc.

[0054] like Figure 4AAs shown, base station 110 can transmit and UE 120 can receive the first DCI (DCI 1) 405 of the two-stage DCI. UE 120 can receive the first DCI 405 in the PDCCH in the CORESET, as described above. Figure 4A As further shown, base station 110 can transmit and UE 120 can receive a second DCI (DCI 2) 410 of the two-stage DCI. UE 120 can receive the second DCI 410 in the PDSCH, as described above. In some aspects, the first DCI 405 may include scheduling of the second DCI 410. In some aspects, the first DCI 405 may schedule the second DCI 410 via a Cellular Radio Network Temporary Identifier (C-RNTI), a Configured Scheduled RNTI (CS-RNTI), an MCS Cellular RNTI (MCS-C-RNTI), etc.

[0055] The first DCI 405 and the second DCI 410 may each include scheduling information for communication (e.g., PxSCH communication) for the UE 120. That is, the first DCI 405 and the second DCI 410 may schedule communication together. The UE 120 may receive the second DCI 410 using a default beam as explained by reference numeral 415 or according to a minimum scheduling offset as explained by reference numeral 420. The default beam may be associated with a Transmission Configuration Indicator (TCI) or Quasi-Coexistence (QCL) assumption (e.g., QCL Type D assumption) associated with reference signals (such as Synchronization Signal Block (SSB), Channel State Information Reference Signal (CSI-RS), Probe Reference Signal (SRS), etc.).

[0056] As shown by reference numeral 415, when the time offset between receiving the first DCI 405 and receiving the second DCI 410 is less than a threshold time duration 425 (e.g., timeDurationForQCL (QCL time duration) as defined in the 3GPP specification), the UE 120 can use the default beam to receive the second DCI 410. In other words, the UE 120 can use the default beam to receive the second DCI 410 for the threshold time duration 425 after receiving the first DCI 405. Accordingly, the UE 120 can buffer the first DCI 405 after receiving the second DCI 410 for subsequent decoding. In some respects, when the TCI identifier in the DCI is enabled (e.g., tci-PresentInDCI is enabled ((tci exists in DCI)) or when the TCI identifier in the DCI is not configured in Radio Resource Control (RRC) connectivity mode (e.g., tci-PresentInDCI ((tci exists in DCI)) is not configured), UE 120 may use the default beam to receive the second DCI 410.

[0057] In some respects, UE 120 may determine the default beam to be used for receiving the second DCI 410. For example, UE 120 may determine the default beam at least in part based on QCL assumptions associated with the CORESET, such as the CORESET associated with the lowest CORESET identifier (ID) in the CORESET associated with the search space monitored by UE 120 (e.g., in the active bandwidth portion (BWP) of UE 120) in the current time slot (e.g., the time slot in which the first DCI 405 is received). As an example, UE 120 may assume that the demodulation reference signal (DM-RS) port carrying the PDSCH timing of the second DCI 410 is quasi-co-located with one or more reference signals (RS) indicated by the PDCCH QCL for the CORESET associated with the lowest CORESET ID in the current time slot (e.g., the CORESET associated with the monitored search space).

[0058] As indicated by reference numeral 415, in the current time slot (time slot 1), UE 120 can monitor the search space associated with a first CORESET (CORESET 1) including a first DCI 405, and monitor the search space associated with a second CORESET (CORESET 2) including another DCI (DCIA). Furthermore, the first CORESET can be associated with a first TCI state and the second CORESET can be associated with a second TCI state. In this example, UE 120 can determine that the default beam for receiving the second DCI 410 is associated with the first TCI state because the first CORESET (CORESET 1) has the lowest CORESETID among the first CORESET and the second CORESET (CORESET 2).

[0059] In this manner, for both cases where tci-PresentInDCI is set to "enabled" and tci-PresentInDCI is not configured in RRC connectivity mode, if the offset between the reception of the first DCI and the second DCI on the PDSCH timing is less than the threshold timeDurationForQCL, the UE may assume that the DM-RS port carrying the second DCI of the serving cell is quasi-co-located with (a)QCL parameters of the PDCCH quasi-co-location indication of the CORESET with the lowest CORESET-ID associated with the most recent time slot of one or more CORESETs in the active BWP of the serving cell in which the UE monitors.

[0060] As indicated by reference numeral 420, UE 120 may receive the second DCI 410 (e.g., using C-RNTI, CS-RNTI, or MCS-C-RNTI) according to a minimum scheduling offset 430 (e.g., as an alternative to using the default beam). The minimum scheduling offset 430 may be a time offset between receiving the first DCI 405 and receiving the second DCI 410. In some aspects, when the minimum scheduling offset 430 is configured (e.g., via RRC configuration) for UE 120, or otherwise indicated for UE 120, UE 120 may receive the second DCI 410 according to that minimum scheduling offset 430. As an example, if the minimum scheduling offset 430 is configured for UE 120, UE 120 may determine that the second DCI 410 will not be received until after the minimum scheduling offset 430 following the receipt of the first DCI 405.

[0061] In this way, UE 120 has sufficient time to decode the first DCI 405 to determine the scheduling information for receiving the second DCI 410. Accordingly, the first DCI 405 can use a minimum scheduling offset 430 that satisfies (e.g., greater than or equal to) K. 0min The timing value (e.g., a timing value indicating the timing between granting downlink permission and receiving corresponding downlink data communication (e.g., the second DCI 410) in the first DCI 405, which may be referred to as the K0 value) is used to schedule the second DCI 410.

[0062] In this way, when the minimum scheduling offset limit is applied, the UE does not expect to be scheduled such that the first DCI is in slot n and the second DCI is in slot n with an offset less than the applicable minimum scheduling offset limit K. 0min K0 is scheduled on PDSCH using C-RNTI, CS-RNTI, or MCS-C-RNTI. In some respects, K... 0min And / or K0 may be associated with the time granularity of the time slot, the OFDM symbol duration determined by the subcarrier spacing, or another time unit.

[0063] As described above, the first DCI 405 and the second DCI 410 may each include scheduling information for communication (e.g., PxSCH communication) for the UE 120. Accordingly, the UE 120 may decode and combine the scheduling information of the first DCI 405 and the second DCI 410 to determine the scheduling for communication.

[0064] like Figure 4BAs shown by reference numeral 435 in the accompanying drawings, UE 120 can transmit or receive communications (e.g., transport blocks) scheduled by the first DCI 405 and the second DCI 410. For example, UE 120 can receive communications scheduled in the PDSCH by the first DCI 405 and the second DCI 410 from base station 110.

[0065] As another example, UE 120 may transmit to base station 110 communication scheduled in the PUSCH by first DCI 405 and second DCI 410. In this case, first DCI 405 and second DCI 410 may schedule the communication after the PUSCH processing time (e.g., a single timeline constraint). Specifically, first DCI 405 and second DCI 410 may indicate a slot offset (e.g., a timing value indicating the timing between the uplink permission indicated by first DCI 405 and second DCI 410 and the transmission of the corresponding uplink data communication (e.g., the communication), which may be referred to as the K2 value) and a start and length indicator value (SLIV) for the communication, and the communication may be associated with timing advance. Accordingly, the first DCI 405 and the second DCI 410 can schedule communication (e.g., including one or more DM-RS for the communication) to begin transmission after the symbol associated with the PUSCH processing time (which may be referred to as symbol L2).

[0066] In some aspects, as indicated by reference numeral 440, the processing time (Tproc2) may begin from the receipt of the last symbol of the PDCCH carrying the first DCI 405 (e.g., the end of the PDCCH). Accordingly, communication may be scheduled to begin transmission of symbols after the processing time measured from the end of the PDCCH (e.g., L2 > Tproc2). In some aspects, as indicated by reference numeral 445, the processing time (Tproc2') may begin from the receipt of the last symbol of the PDSCH carrying the second DCI 410 (e.g., the end of the PDSCH). Accordingly, communication may be scheduled to begin transmission of symbols after the processing time measured from the end of the PDSCH (e.g., L2 > Tproc2').

[0067] In this manner, if the first uplink symbol in the PUSCH allocation for a transport block (including DM-RS) (as defined by the slot offset K2 and the start and length indicators SLIV of the two-stage DCI and including the effect of timing advance) begins no earlier than symbol L2, the UE can transmit the transport block in the PUSCH, where L2 is defined as the next uplink symbol whose cyclic prefix (CP) begins after the reception of the last symbol of either the PDCCH carrying the first DCI of the PUSCH or the PDSCH carrying the second DCI of the PUSCH.

[0068] In some aspects, the first DCI 405 and the second DCI 410 may schedule communication after the first PUSCH processing time and the second PUSCH processing time (e.g., two timeline constraints). Accordingly, the first DCI 405 and the second DCI 410 may schedule communication (e.g., including one or more DM-RS for the communication) to begin transmission after the symbol (L2) associated with the first PUSCH processing time and after the symbol associated with the second PUSCH processing time (which may be referred to as symbol L1) (e.g., according to slot offset, SLIV, and / or timing advance).

[0069] In some aspects, as indicated by reference numeral 440, the first processing time (Tproc2) may begin from the last symbol of the PDCCH carrying the first DCI 405. Accordingly, communication may be scheduled to begin transmission in symbols after the first processing time measured from the end of the PDCCH (e.g., L2 > Tproc2). In some aspects, as indicated by reference numeral 445, the second processing time (Tproc1) may begin from the reception of the last symbol of the PDSCH carrying the second DCI 410. Accordingly, communication may also be scheduled to begin transmission in symbols after the second processing time measured from the end of the PDSCH (e.g., L1 > Tproc1).

[0070] In this manner, if the first uplink symbol in the PUSCH allocation for the transport block (including DM-RS) (as defined by the slot offset K2 and the start and length indicators SLIV of the two-stage DCI and including the effect of timing advance) starts no earlier than symbol L2 and no earlier than symbol L1, the UE can transmit the transport block in the PUSCH, where L2 is defined as the next uplink symbol whose CP starts after the reception of the last symbol of the PDCCH carrying the first DCI of the PUSCH, and L1 is defined as the next uplink symbol whose CP starts after the last symbol of the PDSCH carrying the second DCI of the PUSCH.

[0071] As indicated above, Figure 4A and 4B This is provided as one or more examples. Other examples may differ from those provided. Figure 4A and Figure 4B The example described.

[0072] Figure 5 This is a diagram illustrating, for example, an example process 500 performed by a UE according to various aspects of this disclosure. Example process 500 is an example in which a UE (e.g., UE 120, etc.) performs operations associated with two-stage DCI processing.

[0073] like Figure 5 As shown, in some aspects, process 500 may include receiving a first DCI and a second DCI for co-scheduled UE communications, wherein the second DCI is received using a default beam or according to a minimum scheduling offset (block 510). For example, the UE (e.g., using antenna 252, demodulator 254, MIMO detector 256, receive processor 258, controller / processor 280, etc.) may receive the first DCI and the second DCI for co-scheduled UE communications as described above. In some aspects, the second DCI is received using a default beam or according to a minimum scheduling offset.

[0074] like Figure 5 As further shown, in some aspects, process 500 may include transmitting or receiving communications at least in part based on the first DCI and the second DCI (block 520). For example, a UE (e.g., using antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, etc.) may transmit or receive communications at least in part based on the first DCI and the second DCI, as described above.

[0075] Process 500 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0076] In the first aspect, the second DCI is received in PDSCH.

[0077] In a second aspect, either alone or in combination with the first aspect, when the time offset between receiving the first DCI and receiving the second DCI does not meet a threshold, the second DCI is received using a default beam.

[0078] In a third aspect, either alone or in combination with one or more of the first and second aspects, process 500 includes determining the default beam based at least in part on the QCL assumption associated with CORESET.

[0079] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, the CORESET is associated with the lowest CORESET identifier among the CORESETs associated with the search space monitored by the UE.

[0080] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, when a minimum scheduling offset is configured for the UE, the second DCI receives according to the minimum scheduling offset.

[0081] In the sixth aspect, either alone or in combination with one or more of the first to fifth aspects, process 500 includes determining that the second DCI should be received after the minimum scheduling offset following the receipt of the first DCI.

[0082] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the first DCI schedules the second DCI by satisfying the timing value of the minimum scheduling offset.

[0083] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the communication is transmitted after a processing time that begins from the end of the first DCI.

[0084] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the communication is transmitted after the processing time that begins from the end of the second DCI.

[0085] In the tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the communication is transmitted after a first processing time starting from the end of the first DCI and after a second processing time starting from the end of the second DCI.

[0086] although Figure 5 An example box of process 500 is shown, but in some respects, process 500 may include... Figure 5 The boxes depicted in the process are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes in process 500 can be executed in parallel.

[0087] Figure 6 This is a diagram illustrating, for example, an example process 600 performed by a base station according to various aspects of this disclosure. Example process 600 is an example in which a base station (e.g., base station 110, etc.) performs operations associated with two-stage DCI processing.

[0088] like Figure 6As shown, in some aspects, process 600 may include transmitting a first DCI and a second DCI for co-scheduling UE communications, wherein the second DCI is transmitted using a default beam or according to a minimum scheduling offset (block 610). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, etc.) may transmit the first DCI and the second DCI for co-scheduling UE communications as described above. In some aspects, the second DCI is transmitted using a default beam or according to a minimum scheduling offset.

[0089] like Figure 6 As further shown, in some aspects, process 600 may include transmitting or receiving communications at least in part based on the first DCI and the second DCI (block 620). For example, a base station (e.g., using controller / processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, etc.) may transmit or receive communications at least in part based on the first DCI and the second DCI, as described above.

[0090] Process 600 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0091] In the first aspect, the second DCI is transmitted in the PDSCH.

[0092] In a second aspect, either alone or in combination with the first aspect, when the time offset between transmitting the first DCI and transmitting the second DCI does not meet a threshold, the second DCI is transmitted using a default beam.

[0093] In a third aspect, either alone or in combination with one or more of the first and second aspects, process 600 includes determining the default beam based at least in part on the QCL assumption associated with CORESET to be used by the UE.

[0094] In the fourth aspect, either alone or in combination with one or more of the first to third aspects, the CORESET is associated with the lowest CORESET identifier among the CORESETs associated with the search space monitored by the UE.

[0095] In the fifth aspect, either alone or in combination with one or more of the first to fourth aspects, when a minimum scheduling offset is configured for the UE, the second DCI is transmitted according to the minimum scheduling offset.

[0096] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, process 600 includes determining that the second DCI should be transmitted after the minimum scheduling offset following the transmission of the first DCI.

[0097] In the seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the first DCI schedules the second DCI by satisfying the timing value of the minimum scheduling offset.

[0098] In the eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the communication is received after a processing time that begins from the end of the first DCI.

[0099] In the ninth aspect, either alone or in combination with one or more of the first to eighth aspects, the communication is received after the processing time since the end of the second DCI.

[0100] In the tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the communication is received after a first processing time starting from the end of the first DCI and after a second processing time starting from the end of the second DCI.

[0101] although Figure 6 An example box of process 600 is shown, but in some respects, process 600 may include... Figure 6 The boxes depicted in the process are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes in process 600 can be executed in parallel.

[0102] The foregoing disclosure provides explanations and descriptions, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the foregoing disclosure or may be obtained through practice.

[0103] As used herein, the term "component" is intended to be interpreted broadly as hardware, firmware, and / or a combination of hardware and software. As used herein, a processor is implemented using hardware, firmware, and / or a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented in various forms of hardware, firmware, and / or hardware and software combinations. The actual dedicated control hardware or software code used to implement these systems and / or methods is not limiting in any way. Therefore, the operation and behavior of these systems and / or methods are described herein without reference to any specific software code—it is understood that software and hardware can be designed to implement these systems and / or methods, at least in part, based on the description herein.

[0104] As used in this article, depending on the context, satisfying the threshold can mean a value greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, etc.

[0105] Although specific combinations of features are described in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of aspects. In fact, many of these features can be combined in ways not specifically described in the claims and / or disclosed in the specification. Although each dependent claim listed below may be directly subordinated to only one claim, the disclosure of aspects includes each dependent claim being combined with each other claim in this set of claims. The phrase “at least one of” refers to any combination of these items, including single members. As an example, “at least one of a, b, or c” is intended to cover: a, b, c, ab, ac, bc, and abc, as well as any combination having 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).

[0106] The elements, actions, or instructions used herein should not be construed as critical or necessary unless explicitly stated otherwise. Furthermore, as used herein, the articles “a” and “some” are intended to include one or more items and may be used interchangeably with “one or more.” Additionally, as used herein, the article “the” is intended to include one or more items referenced in conjunction with the article “the” and may be used interchangeably with “one or more.” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items (e.g., related items, unrelated items, combinations of related and unrelated items, etc.) and may be used interchangeably with “one or more.” Where only one item is intended, the phrase “only one” or similar language is used. Moreover, as used herein, the terms “have,” “contain,” “include,” etc., are intended to be open-ended terms. Furthermore, the phrase “based on” is intended to mean “at least partially based on” unless otherwise explicitly stated. Moreover, as used herein, the term “or” is intended to be inclusive when used in a sequence and may be used interchangeably with “and / or” unless otherwise explicitly stated (e.g., in combination with “either of” or “only one of”).

Claims

1. A wireless communication method performed by a user equipment (UE), comprising: Receive first downlink control information (DCI) and second DCI for co-scheduling the communication of the UE; as well as The communication is transmitted or received at least in part based on the first DCI and the second DCI, wherein The second DCI is received in the physical downlink shared channel according to the minimum scheduling offset; and The first DCI schedules the second DCI using a timing value greater than or equal to the minimum scheduling offset.

2. The method of claim 1, wherein when the minimum scheduling offset is configured for the UE, the second DCI receives according to the minimum scheduling offset.

3. The method of claim 1, further comprising: It is determined that the second DCI should be received after the minimum scheduling offset following the receipt of the first DCI.

4. The method of claim 1, wherein the communication is transmitted after a processing time starting from the end of the first DCI.

5. The method of claim 1, wherein the communication is transmitted after a processing time starting from the end of the second DCI.

6. The method of claim 1, wherein the communication is transmitted after a first processing time starting from the end of the first DCI and after a second processing time starting from the end of the second DCI.

7. A wireless communication method performed by a network entity, comprising: Transmit the first downlink control information (DCI) and the second DCI for co-scheduling user equipment (UE) communications; as well as The communication is transmitted or received at least in part based on the first DCI and the second DCI, wherein The second DCI is transmitted in the physical downlink shared channel according to the minimum scheduling offset; and The first DCI schedules the second DCI using a timing value greater than or equal to the minimum scheduling offset.

8. The method of claim 7, wherein when the minimum scheduling offset is configured for the UE, the second DCI is transmitted according to the minimum scheduling offset.

9. The method of claim 7, further comprising: It is determined that the second DCI should be transmitted after the minimum scheduling offset following the transmission of the first DCI.

10. The method of claim 7, wherein the communication is received after a processing time starting from the end of the first DCI.

11. The method of claim 7, wherein the communication is received after a processing time starting from the end of the second DCI.

12. The method of claim 7, wherein the communication is received after a first processing time starting from the end of the first DCI and after a second processing time starting from the end of the second DCI.

13. A user equipment (UE) for wireless communication, comprising: Memory; as well as One or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: Receive first downlink control information (DCI) and second DCI for co-scheduling the communication of the UE; as well as The communication is transmitted or received at least in part based on the first DCI and the second DCI, wherein The memory and the one or more processors are configured to receive the second DCI in a physical downlink shared channel according to a minimum scheduling offset; and The first DCI schedules the second DCI using a timing value greater than or equal to the minimum scheduling offset.

14. The UE of claim 13, wherein when the minimum scheduling offset is configured for the UE, the second DCI receives according to the minimum scheduling offset.

15. The UE of claim 13, wherein the memory and the one or more processors are configured to: It is determined that the second DCI should be received after the minimum scheduling offset following the receipt of the first DCI.

16. The UE of claim 13, wherein the communication is transmitted after a processing time starting from the end of the first DCI.

17. The UE of claim 13, wherein the communication is transmitted after a processing time starting from the end of the second DCI.

18. The UE of claim 13, wherein the communication is transmitted after a first processing time starting from the end of the first DCI and after a second processing time starting from the end of the second DCI.

19. A network entity for wireless communication, comprising: Memory; as well as One or more processors operatively coupled to the memory, the memory and the one or more processors being configured to: Transmit the first downlink control information (DCI) and the second DCI for co-scheduling user equipment (UE) communications; as well as The communication is transmitted or received at least in part based on the first DCI and the second DCI, wherein The memory and the one or more processors are configured to transmit the second DCI in a physical downlink shared channel according to a minimum scheduling offset; and The first DCI schedules the second DCI using a timing value greater than or equal to the minimum scheduling offset.

20. The network entity of claim 19, wherein when the minimum scheduling offset is configured for the UE, the second DCI is transmitted according to the minimum scheduling offset.

21. The network entity of claim 19, wherein the memory and the one or more processors are configured to: It is determined that the second DCI should be transmitted after the minimum scheduling offset following the transmission of the first DCI.

22. The network entity of claim 19, wherein the communication is received after a processing time starting from the end of the first DCI.

23. The network entity of claim 19, wherein the communication is received after a processing time starting from the end of the second DCI.

24. The network entity of claim 19, wherein the communication is received after a first processing time starting from the end of the first DCI and after a second processing time starting from the end of the second DCI.

25. A non-transient computer-readable medium storing one or more instructions for wireless communication, said one or more instructions comprising: One or more instructions that, when executed by one or more processors of a user equipment (UE), cause the one or more processors to perform the following operations: Receive first downlink control information (DCI) and second DCI for co-scheduling the communication of the UE; and The communication is transmitted or received at least in part based on the first DCI and the second DCI, wherein When one or more instructions are executed by one or more processors of the UE, the one or more processors cause the one or more processors to receive the second DCI in the physical downlink shared channel according to the minimum scheduling offset; and The first DCI schedules the second DCI using a timing value greater than or equal to the minimum scheduling offset.

26. A non-transient computer-readable medium storing one or more instructions for wireless communication, said one or more instructions comprising: One or more instructions that, when executed by one or more processors of a network entity, cause the one or more processors to perform the following operations: Transmit the first downlink control information (DCI) and the second DCI for co-scheduling user equipment (UE) communications; and The communication is transmitted or received at least in part based on the first DCI and the second DCI, wherein When one or more instructions are executed by one or more processors of the UE, the one or more processors cause the one or more processors to transmit the second DCI in the physical downlink shared channel according to the minimum scheduling offset; and The first DCI schedules the second DCI using a timing value greater than or equal to the minimum scheduling offset.

27. A device for wireless communication, comprising: A means for receiving first downlink control information (DCI) and second DCI for co-scheduling communication of the devices; as well as A means for transmitting or receiving the communication based at least in part on the first DCI and the second DCI, wherein The second DCI is received in the physical downlink shared channel according to the minimum scheduling offset; and The first DCI schedules the second DCI using a timing value greater than or equal to the minimum scheduling offset.

28. The device of claim 27, wherein when the minimum scheduling offset is configured for the device, the second DCI receives according to the minimum scheduling offset.

29. The apparatus of claim 27, further comprising: A means for determining that the second DCI should be received after the minimum scheduling offset following the receipt of the first DCI.

30. The device of claim 27, wherein the communication is transmitted after a processing time starting from the end of the first DCI.

31. The device of claim 27, wherein the communication is transmitted after a processing time starting from the end of the second DCI.

32. The device of claim 27, wherein the communication is transmitted after a first processing time starting from the end of the first DCI and after a second processing time starting from the end of the second DCI.

33. A device for wireless communication, comprising: A means for transmitting first downlink control information (DCI) and second DCI for co-scheduling communication of user equipment (UE). as well as A means for transmitting or receiving the communication based at least in part on the first DCI and the second DCI, wherein The second DCI is transmitted in the physical downlink shared channel according to the minimum scheduling offset; and The first DCI schedules the second DCI using a timing value greater than or equal to the minimum scheduling offset.

34. The device of claim 33, wherein when the minimum scheduling offset is configured for the UE, the second DCI is transmitted according to the minimum scheduling offset.

35. The apparatus of claim 33, further comprising: A means for determining that the second DCI should be transmitted after the minimum scheduling offset following the transmission of the first DCI.

36. The device of claim 33, wherein the communication is received after a processing time starting from the end of the first DCI.

37. The device of claim 33, wherein the communication is received after a processing time starting from the end of the second DCI.

38. The device of claim 33, wherein the communication is received after a first processing time starting from the end of the first DCI and after a second processing time starting from the end of the second DCI.

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