Physical downlink shared channel mapping type for physical downlink shared channel repetition in one time slot
By receiving and parsing the DCI communication of PDSCH, determining the mapping types of multiple PDSCH transmission timings in one time slot, solving the problem of inefficient channel resource allocation in the prior art, and achieving more efficient channel utilization.
Patent Information
- Application Number
- CN202180009538.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Priority Date
- 2021-01-13
- Filing Date
- 2021-01-14
- Publication Date
- 2025-03-07
- Estimated Expiration
- 2041-01-14
AI Technical Summary
In the prior art, when dealing with physical downlink shared channel (PDSCH) repetition, it is difficult to effectively determine the mapping types of multiple transmission times in one time slot, resulting in inefficient channel resource allocation.
By receiving downlink control information (DCI) communications of the PDSCH that schedules the first transmission timing and the second transmission timing, the mapping type for the first transmission timing and the second transmission timing is determined based at least in part on the received DCI communication.
Effective resource allocation of multiple PDSCH transmission opportunities in one time slot is realized, the flexibility and efficiency of channel mapping are improved, and the performance of wireless communication system is enhanced.
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Figure CN114982187B_ABST
Abstract
Description
[0001] CROSS-REFERENCE TO RELATED APPLICATIONS
[0002] This patent application claims priority to the following applications: U.S. Provisional Patent Application No. 62 / 962,666, filed on January 17, 2020, entitled “PHYSICAL DOWNLINK SHARED CHANNEL MAPPING TYPE FOR PHYSICAL DOWNLINK SHARED CHANNEL REPETITION IN ONE SLOT”; and U.S. Non-Provisional Patent Application No. 17 / 248,181, filed on January 13, 2021, entitled “PHYSICAL DOWNLINK SHARED CHANNEL MAPPING TYPE FOR PHYSICAL DOWNLINK SHARED CHANNEL REPETITION IN ONE SLOT”; the above two applications are expressly incorporated herein by reference. Technical Field
[0003]
[0006] In general, aspects of the present disclosure relate to wireless communications and to techniques and apparatus for a Physical Downlink Shared Channel (PDSCH) mapping type for PDSCH repetition in a slot. Background Art
[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasting. Typical wireless communication systems may employ multiple access technologies that can support communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).
[0005] A wireless communication network may include several base stations (BSs) that may support communications for several user equipments (UEs). The UE may communicate with the BS via a downlink and an uplink. The downlink (or forward link) refers to the communication link from the BS to the UE, and the uplink (or reverse link) refers to the communication link from the UE to the BS. As will be described in more detail herein, the BS may be referred to as a Node B, gNB, access point (AP), radio head, transmit receive point (TRP), new radio (NR) BS, 5G Node B, etc.
[0006] The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different user devices to communicate at the city, country, region, and even global levels. NR (which may also be referred to as 5G) is an enhancement set to the LTE mobile standard released by 3GPP. NR is designed to better integrate with other open standards by improving spectrum efficiency, reducing costs, improving services, utilizing new spectrum, and using orthogonal frequency division multiplexing (OFDM) (CP-OFDM) with cyclic prefix (CP) on the downlink (DL), using CP-OFDM and / or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink (UL), and supporting beamforming, multiple input multiple output (MIMO) antenna technology, and carrier aggregation, so as to better support mobile broadband Internet access. However, as the demand for mobile broadband access continues to grow, there is a need for further improvements to NR and LTE technologies. Preferably, these improvements should be applicable to other multiple access technologies and telecommunication standards that adopt these technologies. Summary of the invention
[0007] In some aspects, a method of wireless communication performed by a UE may include: receiving a downlink control information (DCI) communication that schedules a PDSCH including a first transmission opportunity and a second transmission opportunity; and determining a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on receiving the DCI communication that schedules the PDSCH including the first transmission opportunity and the second transmission opportunity.
[0008] In some aspects, a UE for wireless communication may include a memory and one or more processors coupled to the memory. For example, the one or more processors may be coupled to the memory operatively, electrically, communicatively, or otherwise. The memory may include instructions executable by the one or more processors to cause the UE to perform the following operations: receive a DCI communication that schedules a PDSCH including a first transmission opportunity and a second transmission opportunity; and determine a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on receiving the DCI communication that schedules the PDSCH including the first transmission opportunity and the second transmission opportunity.
[0009] In some aspects, a non-transitory computer-readable medium may store one or more instructions for wireless communication. The one or more instructions, when executed by one or more processors of a UE, may cause the UE to perform the following operations: receive a DCI communication that schedules a PDSCH including a first transmission opportunity and a second transmission opportunity; and determine a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on receiving the DCI communication that schedules a PDSCH including the first transmission opportunity and the second transmission opportunity.
[0010] In some aspects, an apparatus for wireless communication may include: a unit for receiving a DCI communication that schedules a PDSCH including a first transmission opportunity and a second transmission opportunity; and a unit for determining a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on receiving the DCI communication that schedules the PDSCH including the first transmission opportunity and the second transmission opportunity.
[0011] The various aspects generally include methods, apparatus, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, wireless communication devices and / or processing systems as fully described herein with reference to the accompanying drawings and description and as illustrated by the accompanying drawings and description.
[0012] The foregoing has been fairly extensively summarized according to the features and technical advantages of the examples of the present disclosure so that the following specific embodiments can be better understood. Additional features and advantages will be described below. The disclosed concepts and specific examples can be easily used as the basis for modifying or designing other structures for the same purpose of achieving the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the characteristics of the concepts disclosed herein (both their organization and method of operation) and the associated advantages will be better understood according to the description below. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and is not intended to be a definition of limitations to the claims. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] In order that the above-mentioned features of the present disclosure may be understood in detail, a more specific description may be made of the invention briefly summarized above with reference to various aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the accompanying drawings only illustrate certain typical aspects of the present disclosure and are therefore not to be considered as limiting the scope thereof, as the description may admit of other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.
[0014] Figure 1 is a block diagram illustrating an example of a wireless communication network in accordance with various aspects of the present disclosure.
[0015] Figure 2 is a block diagram illustrating an example of a base station communicating with a UE in a wireless communication network according to various aspects of the present disclosure.
[0016] Figure 3 is a diagram illustrating an example of downlink (DL)-centric time slots according to various aspects of the present disclosure.
[0017] Figure 4 is a diagram illustrating an example of uplink (UL)-centric time slots in accordance with various aspects of the present disclosure.
[0018] Figures 5A-5D is a diagram illustrating an example associated with a PDSCH mapping type determination for PDSCH repetition in one slot according to various aspects of the present disclosure.
[0019] Figure 6 is a schematic diagram illustrating an example process, for example, performed by a user device, according to various aspects of the present disclosure. DETAILED DESCRIPTION
[0020] The following is a more complete description of various aspects of the present disclosure with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms, and should not be interpreted as being limited to any specific structure or function presented throughout the present disclosure. More specifically, these aspects are provided so that the present disclosure will be thorough and complete, and the scope of the present disclosure will be fully conveyed to those skilled in the art. Based on the teachings of this article, it should be understood by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the disclosure disclosed herein, whether the aspect is implemented independently of any other aspect of the present disclosure or implemented in combination with any other aspect. For example, using any number of aspects set forth herein, a device can be implemented or a method can be practiced. In addition, the scope of the present disclosure is intended to cover such a device or method that is practiced using other structures, functions, or structures and functions other than the various aspects of the disclosure set forth herein or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the present disclosure disclosed herein can be embodied by one or more elements of the claims.
[0021] Several aspects of telecommunication systems will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.
[0022] It should be noted that although various aspects may be described herein using terms commonly associated with 3G and / or 4G wireless technologies, various aspects of the present disclosure may be applicable to communication systems based on other generations, such as 5G and later communication systems (including NR technology).
[0023] Figure 1 1 is a schematic diagram showing a wireless network 100 in which various aspects of the present disclosure may be practiced. The wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network. The wireless network 100 may include several BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities. A BS is an entity that communicates with a user equipment (UE) and may also be referred to as a base station, NR BS, Node B, gNB, 5G Node B (NB), access point, transmit receive point (TRP), etc. Each BS may provide communication coverage for a specific geographic area. In 3GPP, the term "cell" may refer to a coverage area of a BS and / or a BS subsystem serving the coverage area, depending on the context in which the term is used.
[0024] A BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and / or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs associated with the femto cell (e.g., UEs in a closed subscriber group (CSG)). A BS for a macro cell may be referred to as a macro BS. A BS for a pico cell may be referred to as a pico BS. A BS for a femto cell may be referred to as a femto BS or a home BS. In Figure 1 In the example shown in , BS 110a may be a macro BS for macro cell 102a, BS 110b may be a pico BS for pico cell 102b, and BS 110c may be a femto BS for femto cell 102c. A BS may support one or more (e.g., three) cells. The terms "eNB", "base station", "NR BS", "gNB", "TRP", "AP", "Node B", "5G NB", and "cell" may be used interchangeably herein.
[0025] In some aspects, the cells may not necessarily be stationary, and the geographic area of the cells may move depending on the location of the mobile BS. In some aspects, the BSs may be interconnected with each other and / or with one or more other BSs or network nodes (not shown) in the wireless network 100 via various types of backhaul interfaces (e.g., direct physical connections, virtual networks, etc.) using any appropriate transport network.
[0026] The wireless network 100 may also include a relay station. A relay station is an entity that can receive data transmissions from an upstream station (e.g., a BS or a UE) and send data transmissions to a downstream station (e.g., a UE or a BS). A relay station may also be a UE that is capable of relaying transmissions for other UEs. Figure 1 In the example shown in FIG. 1 , a relay station 110 d may communicate with a macro BS 110 a and a UE 120 d to facilitate communication between the BS 110 a and the UE 120 d. A relay station may also be referred to as a relay BS, a relay base station, a relay, or the like.
[0027] The wireless network 100 may be a heterogeneous network including different types of BSs (e.g., macro BSs, pico BSs, femto BSs, relay BSs, etc.). These different types of BSs may have different transmit power levels, different coverage areas, and different effects on interference in the wireless network 100. For example, a macro BS may have a high transmit power level (e.g., 5 to 40 watts), while a pico BS, a femto BS, and a relay BS may have a lower transmit power level (e.g., 0.1 to 2 watts).
[0028] The network controller 130 may be coupled to a set of BSs and may provide coordination and control for these BSs. The network controller 130 may communicate with the BSs via a backhaul. The BSs may also communicate with each other directly or indirectly via a wireless or wired backhaul.
[0029] UE 120 (e.g., 120a, 120b, 120c) can be dispersed throughout the wireless network 100, and each UE can be stationary or mobile. UE can also be referred to as an access terminal, terminal, mobile station, subscriber unit, station, etc. UE can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or apparatus, a biometric sensor / device, a wearable device (smart watch, smart clothing, smart glasses, smart wristband, smart jewelry (e.g., smart ring, smart bracelet, etc.)), an entertainment device (e.g., a music or video device, or a satellite radio unit, etc.), a vehicle component or sensor, a smart meter / sensor, an industrial manufacturing device, a global positioning system device, or any other suitable device configured to communicate via a wireless or wired medium.
[0030] Some UEs may be considered as machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, etc. that can communicate with a base station, another device (e.g., a remote device), or some other entity. A wireless node may provide a connection to or to a network (e.g., a wide area network such as the Internet or a cellular network) via, for example, a wired or wireless communication link. Some UEs may be considered as Internet of Things (IoT) devices, and / or may be implemented as NB-IoT (narrowband Internet of Things) devices. Some UEs may be considered as customer premises equipment (CPE). UE 120 may be included inside a housing that houses components of UE 120 (e.g., processor components, memory components, etc.).
[0031] Typically, any number of wireless networks can be deployed in a given geographic area. Each wireless network can support a specific radio access technology (RAT) and can operate on one or more frequencies. RAT can also be referred to as a radio technology, an air interface, etc. Frequency can also be referred to as a carrier, a frequency channel, etc. Each frequency can support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks can be deployed.
[0032] In some aspects, 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 communicating with each other). For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocol (e.g., which may include vehicle-to-vehicle (V2V) protocol, vehicle-to-infrastructure (V2I) protocol, etc.), mesh network, etc. In this case, UE 120 may perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by base station 110.
[0033] As indicated above, Figure 1 is provided as an example. Other examples may differ from those described above. Figure 1 as described.
[0034] Figure 2 A base station 110 and a UE 120 (which may be Figure 1 1. Block diagram of design 200 of a base station in a base station and a UE in a UE. Base station 110 may be equipped with T antennas 234a through 234t, and UE 120 may be equipped with R antennas 252a through 252r, where in general, T≥1 and R≥1.
[0035] At the base station 110, the transmit processor 220 may receive data for one or more UEs from the data source 212, select one or more modulation and coding schemes (MCS) for each UE based at least in part on a channel quality indicator (CQI) received from the UE, process (e.g., encode and modulate) the data for the UE based at least in part on the MCS selected for each UE, and provide data symbols for all UEs. The transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI), etc.) and control information (e.g., CQI requests, grants, upper layer signaling, etc.), and provide overhead symbols and control symbols. The transmit processor 220 may also generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS)) and synchronization signals (e.g., primary synchronization signals (PSS) and secondary synchronization signals (SSS)). The transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide T output symbol streams to T modulators (MOD) 232a to 232t. Each modulator 232 may process a corresponding output symbol stream (e.g., for OFDM, etc.) to obtain an output sample stream. Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and up-convert) the output sample stream to obtain a downlink signal. The T downlink signals from modulators 232a to 232t may be transmitted via T antennas 234a to 234t, respectively. According to various aspects described in more detail below, synchronization signals may be generated using position coding to transmit additional information.
[0036] At UE 120, antennas 252a to 252r may receive downlink signals from base station 110 and / or other base stations, and may provide received signals to demodulators (DEMODs) 254a to 254r, respectively. Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) the received signal to obtain input samples. Each demodulator 254 may further process the input samples (e.g., for OFDM, etc.) to obtain received symbols. A MIMO detector 256 may obtain received symbols from all R demodulators 254a to 254r, perform MIMO detection on the received symbols (if applicable), and provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller / processor 280. The channel processor may determine reference signal received power (RSRP), received signal strength indicator (RSSI), reference signal received quality (RSRQ), channel quality indicator (CQI), etc. In some aspects, one or more components of UE 120 may be included in a housing.
[0037] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information from a controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, CQI, etc.). The transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 (if applicable), further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, etc.), and transmitted to the base station 110. At the base station 110, uplink signals from the UE 120 and other UEs may be received by the antenna 234, processed by the demodulator 232, detected by the MIMO detector 236 (if applicable), and further processed by the receive processor 238 to obtain decoded data and control information transmitted by the UE 120. The receive processor 238 may provide decoded data to a data sink 239 and decoded control information to a controller / processor 240. The base station 110 may include a communication unit 244 and communicate with the network controller 130 via the communication unit 244. The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292.
[0038] The controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2Any other component in the base station 110 may perform one or more techniques associated with determining a PDSCH mapping type for a PDSCH repetition in a time slot, as described in more detail elsewhere herein. For example, the controller / processor 240 of the base station 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the Figure 6 The process 600 and / or other processes as described herein, or guides such as Figure 6 The operations of process 600 and / or other processes as described herein. Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively. In some aspects, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions for wireless communication. For example, one or more instructions, when executed by one or more processors of base station 110 and / or UE 120, may perform, for example, Figure 6 The process 600 and / or other processes as described herein, or instructions such as Figure 6 The scheduler 246 may schedule UEs for data transmission on the downlink and / or uplink.
[0039] In some aspects, UE 120 may include: means for receiving a DCI communication scheduling a PDSCH including a first transmission opportunity and a second transmission opportunity; means for determining a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on receiving the DCI communication scheduling a PDSCH including the first transmission opportunity and the second transmission opportunity; and so on. In some aspects, such means may include combining Figure 2 One or more components of UE 120 are depicted, such as controller / processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, etc.
[0040] As indicated above, Figure 2 is provided as an example. Other examples may differ from those described above. Figure 2 as described.
[0041] Figure 3300 is a schematic diagram illustrating an example of a DL-centric time slot or wireless communication structure. The DL-centric time slot may include a control portion 302. The control portion 302 may be present at an initial or beginning portion of the DL-centric time slot. The control portion 302 may include various scheduling information and / or control information corresponding to various portions of the DL-centric time slot. In some configurations, the control portion 302 may be a physical DL control channel (PDCCH), such as in Figure 3 In some aspects, the control portion 302 may include legacy PDCCH information, shortened PDCCH (sPDCCH) information, a control format indicator (CFI) value (e.g., carried on a physical control format indicator channel (PCFICH)), one or more grants (e.g., downlink grant, uplink grant, etc.), etc.
[0042] The DL-centric time slot may also include a DL data portion 304. The DL data portion 304 may sometimes be referred to as the payload of the DL-centric time slot. The DL data portion 304 may include communication resources for transmitting DL data from a scheduling entity (e.g., a UE or BS) to a subordinate entity (e.g., a UE). In some configurations, the DL data portion 304 may be a physical DL shared channel (PDSCH).
[0043] The DL-centric time slot may also include a UL short burst portion 306. The UL short burst portion 306 may sometimes be referred to as a UL burst, a UL burst portion, a common UL burst, a short burst, a UL short burst, a common UL short burst, a common UL short burst portion, and / or various other appropriate terms. In some aspects, the UL short burst portion 306 may include one or more reference signals. Additionally or alternatively, the UL short burst portion 306 may include feedback information corresponding to various other portions of the DL-centric time slot. For example, the UL short burst portion 306 may include feedback information corresponding to the control portion 302 and / or the data portion 304. Non-limiting examples of information that may be included in the UL short burst portion 306 include an ACK signal (e.g., a physical uplink control channel (PUCCH) acknowledgement (ACK), a physical uplink shared channel (PUSCH) acknowledgement (ACK), an immediate ACK, a negative acknowledgement (NACK) signal (e.g., PUCCH NACK, PUSCH NACK, immediate NACK), a scheduling request (SR), a buffer status report (BSR), a hybrid automatic repeat request (HARQ) indicator, a channel state information (CSI), a channel quality indicator (CQI), a sounding reference signal (SRS), a demodulation reference signal (DMRS), PUSCH data, and / or various other suitable types of information. The UL short burst portion 306 may include additional or alternative information, such as information related to a random access channel (RACH) procedure, a scheduling request, and various other suitable types of information.
[0044] As in Figure 3 , the end of the DL data portion 304 can be separated in time from the beginning of the UL short burst portion 306. This time separation may sometimes be referred to as a gap, a guard period, a guard interval, and / or various other appropriate terms. This separation provides time for switching from DL communication (e.g., a receive operation performed by a slave entity (e.g., a UE)) to UL communication (e.g., a transmit operation performed by a slave entity (e.g., a UE)). The foregoing is an example of a DL-centric wireless communication structure, and alternative structures with similar features may exist without necessarily departing from the aspects described herein.
[0045] As indicated above, Figure 3 is provided as an example. Other examples may differ from those described above. Figure 3 as described.
[0046] Figure 4 4 is a schematic diagram showing an example of a UL-centric time slot or wireless communication structure. The UL-centric time slot may include a control portion 402. The control portion 402 may be present at the beginning or the start of the UL-centric time slot. Figure 4 The control portion 402 in can be similar to the above reference Figure 3 The control portion 302 described above. The UL-centric time slot may also include a UL long burst portion 404. The UL long burst portion 404 may sometimes be referred to as the payload of the UL-centric time slot. The "UL portion" may refer to communication resources used to transmit UL data from a subordinate entity (e.g., a UE) to a scheduling entity (e.g., a UE or a BS). In some configurations, the control portion 402 may be a physical DL control channel (PDCCH).
[0047] As in Figure 4 , the end of the control portion 402 may be separated in time from the beginning of the UL long burst portion 404. This separation in time may sometimes be referred to as a gap, a guard period, a guard interval, and / or various other appropriate terms. This separation provides time for switching from DL communications (e.g., receiving operations performed by the scheduling entity) to UL communications (e.g., transmitting operations performed by the scheduling entity).
[0048] The UL-centric timeslot may also include a UL short burst portion 406. Figure 4 The UL short burst portion 406 in the embodiment may be similar to that described above with reference to Figure 3 The UL short burst portion 306 described above may include the combination of Figure 3 Any of the information described. The foregoing is one example of a UL-centric wireless communication structure, and alternative structures with similar features may exist without necessarily departing from the various aspects described herein.
[0049] In one example, a wireless communication structure (e.g., a frame) may include both UL-centric time slots and DL-centric time slots. In this example, the ratio of UL-centric time slots to DL-centric time slots in a frame may be dynamically adjusted based at least in part on the amount of UL data and the amount of DL data transmitted. For example, if there is more UL data, the ratio of UL-centric time slots to DL-centric time slots may be increased. Conversely, if there is more DL data, the ratio of UL-centric time slots to DL-centric time slots may be reduced.
[0050] As indicated above, Figure 4 is provided as an example. Other examples may differ from those described above. Figure 4 as described.
[0051] In some wireless communication systems, the time domain resource allocation (TDRA) associated with the scheduling of PDSCH is indicated via DCI. Typically, the TDRA field points to a TDRA table entry that identifies the mapping type associated with the PDSCH (e.g., mapping type A, mapping type B, etc.), the slot offset K0 (e.g., the number of slots from the slot in which the DCI is received to the slot in which the PDSCH is scheduled), the starting symbol S of the PDSCH, and the allocation length L of the PDSCH. The starting symbol S and the allocation length L can be a function of the mapping type, and can be indicated separately or jointly (e.g., using a start and length indicator value (SLIV)). The length of the TDRA field can be between 0 and 4 bits (e.g., depending on the TDRA table to be used by the UE).
[0052] The mapping type indicates the manner in which the PDSCH is mapped in the time slot carrying the PDSCH. For example, mapping type A indicates that the first DMRS symbol of the PDSCH is on the third symbol (symbol 2) of the time slot or the fourth symbol (symbol 3) of the time slot, and the starting symbol of the PDSCH can be any symbol (symbol 0, symbol 1, symbol 2, or symbol 3) of the first four symbols of the time slot. For mapping type A, a bit in the master information block (MIB) indicates whether the first DMRS symbol of the PDSCH is the third symbol or the fourth symbol, and the starting symbol of the PDSCH is indicated by TDRA, as described above. As another example, mapping type B indicates that the first DMRS symbol of the PDSCH is the first symbol of the PDSCH, and the starting symbol of the PDSCH can be any symbol in the time slot except the last symbol of the time slot. For mapping type B, the starting symbol of the PDSCH is indicated by TDRA, as described above.
[0053] In addition, in some cases, the UE may be configured to implement a scheme associated with time division multiplexing of multiple PDSCH transmission opportunities within a single time slot. According to such a scheme, a single DCI is used to schedule a PDSCH including a first transmission opportunity and a second transmission opportunity in a single time slot (e.g., so that a PDSCH transmission and at least one repetition of a PDSCH transmission occur in the same time slot). Here, the first transmission opportunity and the second transmission opportunity are associated with different transmission configuration indicator (TCI) states within a single time slot, and non-overlapping time resource allocations are used. For example, in a multi-transmitting and receiving point (multi-TRP) scenario for supporting high reliability and / or low latency communications (e.g., ultra-reliable low latency communications (URLLC)), it may be advantageous to use such a scheme, such as the so-called "Scheme 3" (also known as TDM Scheme A).
[0054] According to a scheme associated with time division multiplexing of multiple PDSCH transmission opportunities within a single time slot, a single DCI communication may be used when scheduling a PDSCH including a first transmission opportunity and a second transmission opportunity. For example, the TCI field of the DCI communication may indicate two TCI states. Here, the UE may determine that the TCI field indicates two TCI states, and may therefore determine that the PDSCH scheduled by the DCI communication includes a first transmission opportunity and a second transmission opportunity. In some cases, the starting symbol of the second transmission opportunity has a symbol offset K relative to the last symbol of the first transmission opportunity. The value of K may be configured, for example, by radio resource control (RRC) signaling, or, if not configured, is set to a value of 0. The starting symbol of the first transmission opportunity and the length of the first transmission opportunity are indicated by the TDRA field (e.g., in the manner described above, such as using SLIV), and the length of the second transmission opportunity is assumed to be the same as the length of the first transmission opportunity.
[0055] As noted above, when implementing a scheme associated with time division multiplexing of multiple PDSCH transmission opportunities within a single time slot (e.g., TDM Scheme A), the TDRA field of the DCI communication may indicate a row of a TDRA table, wherein the row of the TDRA table indicates a value for a time slot offset K0, a start symbol S of the PDSCH, and an allocation length L of the PDSCH symbol (e.g., using SLIV individually or jointly), and a mapping type (e.g., mapping type A, mapping type B, etc.). Here, the UE may be configured to apply the start symbol S as indicated by the TDRA field to the first transmission opportunity, and to apply the allocation length L to both the first transmission opportunity and the second transmission opportunity. However, the UE should be configured in such a manner that it interprets the mapping type indicated by the TDRA field so as to enable the UE to determine the location of the DMRS symbols for the first transmission opportunity and the second transmission opportunity within the time slot, which enables the UE to attempt to receive the first transmission opportunity and the second transmission opportunity in the time slot.
[0056] Some aspects described herein provide techniques and apparatus associated with determining a PDSCH mapping type for a PDSCH repetition in a time slot. In some aspects, a UE may receive a DCI communication that schedules a PDSCH including a first transmission opportunity and a second transmission opportunity, and may determine a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on receiving the DCI communication. Additional details are described below.
[0057] Figures 5A-5D is a diagram illustrating an example associated with a PDSCH mapping type determination for PDSCH repetition in a slot according to various aspects of the present disclosure. Figures 5A-5DIn the illustrated example, a UE (e.g., UE 120) is configured to implement a scheme associated with time division multiplexing of multiple transmission opportunities within a single time slot. For example, the UE may be configured to implement TDM Scheme A (e.g., based at least in part on the RRC parameter RepSchemeEnabler being set to "TDMScheme A").
[0058] As in Figure 5A As shown by reference numeral 505 in the figure, the UE may receive a DCI communication that schedules a PDSCH that includes a first transmission opportunity and a second transmission opportunity. For example, the UE may receive a DCI communication in which the TCI field indicates two TCI states (e.g., a first TCI state and a second TCI state). Here, the UE may determine that the DCI communication schedules a PDSCH that includes a first transmission opportunity and a second transmission opportunity based at least in part on the TCI field indicating the two TCI states. That is, the TCI field indicating the two TCI states may serve as an indication that the scheduled PDSCH includes a first transmission opportunity and a second transmission opportunity.
[0059] As indicated by reference numeral 510, the UE may determine a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on receiving the DCI communication. For example, the UE may determine the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity based at least in part on determining that the DCI communication schedules a PDSCH including the first transmission opportunity and the second transmission opportunity.
[0060] In some aspects, the UE may determine a mapping type for a first transmission opportunity based at least in part on a mapping type indicated via a DCI communication, and may determine a mapping type for a second transmission opportunity based at least in part on an assumed mapping type. In such a case, in some aspects, the mapping type indicated via the DCI communication may be mapping type A or mapping type B, and the assumed mapping type may be mapping type B. Note that in this case, the assumed mapping type may be mapping type B because the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity cannot both be mapping type A (e.g., because in such a case, the positions of the first DMRS symbols of the first transmission opportunity and the second transmission opportunity would be required to be in adjacent symbols).
[0061] Alternatively, in some aspects, the UE may determine a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity based at least in part on an assumed mapping type. In such a case, in some aspects, the assumed mapping type may be mapping type B (e.g., because the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity cannot both be mapping type A). In some aspects, if the mapping type indicated by the DCI communication is different from the assumed mapping type (e.g., if the mapping type indicated by the TDRA field is mapping type A), the UE may identify an error associated with the DCI communication (because the UE does not expect this situation) and / or avoid receiving or processing the PDSCH (e.g., the UE may ignore the DCI communication). Alternatively, in some aspects, when the mapping type indicated by the DCI communication is different from the assumed mapping type, the UE may receive the PDSCH based at least in part on the assumed mapping type rather than the mapping type indicated by the DCI communication (e.g., the UE may ignore the indicated mapping type and receive the PDSCH for both the first transmission opportunity and the second transmission opportunity based on mapping type B).
[0062] Alternatively, in some aspects, the UE may determine the mapping type for the second transmission opportunity based at least in part on the mapping type indicated via the DCI communication, and may determine the mapping type for the first transmission opportunity based at least in part on the assumed mapping type. In such a case, in some aspects, the mapping type indicated via the DCI communication may be mapping type A or mapping type B, and the assumed mapping type may be mapping type B. As noted above, in this case, the assumed mapping type is mapping type B because the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity cannot both be mapping type A.
[0063] Alternatively, in some aspects, the UE may determine the mapping type for the first transmission opportunity based at least in part on the first mapping type indicated by the DCI communication, and may determine the mapping type for the second transmission opportunity based at least in part on the second mapping type indicated by the DCI communication. In such a case, the first mapping type indicated by the DCI communication may be mapping type A, and the second mapping type indicated by the DCI communication may be mapping type B. Alternatively, the first mapping type indicated by the DCI communication may be mapping type B, and the second mapping type indicated by the DCI communication may be mapping type A or mapping type B. Note that in this example, the TDRA table may be configured so that each row indicates two mapping types. Therefore, the row of the TDRA table indicated by the TDRA field of the DCI communication may indicate two mapping types to be applied to the two transmission opportunities.
[0064] In some aspects, the UE may identify a technique for determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity. That is, in some aspects, the UE may identify one of the above techniques to be used to determine a mapping type for a first transmission opportunity and a second transmission opportunity. In some aspects, the UE may identify the technique and may determine a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity based at least in part on the technique.
[0065] In some aspects, the UE may identify a technique for determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity based at least in part on a configuration received by the UE. For example, the UE may receive a configuration indicating a technique for determining a mapping type for a first transmission opportunity and a second transmission opportunity via RRC signaling, and may identify the technique based at least in part on the configuration.
[0066] Alternatively, the UE may identify a technique for determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity based at least in part on a set of parameters. The set of parameters may include, for example, a symbol offset K (e.g., a symbol offset between a first transmission opportunity and a second transmission opportunity), a position of a configuration of a DMRS for a PDSCH (e.g., DMRS-TypeA-Position, which is a position of a configuration of a DMRS for a PDSCH associated with mapping type A), a start symbol S (a start symbol for the PDSCH), an allocation length L (a length of the first transmission opportunity and a length of the second transmission opportunity), etc. Here, the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity may be a function of one or more parameters, and the UE may determine the mapping type for the first transmission opportunity and the second transmission opportunity based at least in part on applying the function to the one or more parameters.
[0067] As indicated by reference numeral 515, the UE may determine a location of a DMRS for the first transmission opportunity and a location of a DMRS for the second transmission opportunity based at least in part on the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity. For example, based at least in part on the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity, the UE may identify a symbol in a time slot to carry a DMRS for the first transmission opportunity and may identify a symbol in a time slot to carry a DMRS for the second transmission opportunity.
[0068] The UE may receive a PDSCH including a first transmission opportunity and a second transmission opportunity, as indicated by reference numeral 520. For example, based at least in part on determining a location of a DMRS for the first transmission opportunity and a location of a DMRS for the second transmission opportunity, the UE may attempt to receive the first transmission opportunity and the second transmission opportunity within a time slot.
[0069] Figures 5B-5D is a schematic diagram showing various examples of a time slot carrying a PDSCH including a first transmission opportunity and a second transmission opportunity. Figures 5B-5D , the symbol offset K is 0, the position for mapping the DMRS of type A is configured as the fourth symbol (symbol 3), two transmission opportunities are scheduled, and the black squares show the positions of the symbols carrying the DMRS. In addition, the gray squares show the positions of the symbols of the first transmission opportunity, and the cross-hatched squares show the positions of the symbols of the second transmission opportunity. The white squares show the positions of the remaining symbols of the time slot (e.g., not used to carry DMR or PDSCH).
[0070] exist Figure 5B In the example time slot shown, the TDRA field of the DCI communication scheduling the PDSCH including the first transmission opportunity and the second transmission opportunity indicates the starting symbol S as the third symbol (S=2) and the allocation length L as four symbols (L=4). Figure 5B As noted in , in one example, the TDRA field may indicate a mapping type A that the UE applies to a first transmission opportunity. Such an indication may be used, for example, when the UE is to determine a mapping type for a first transmission opportunity based at least in part on a mapping type indicated via a DCI communication, and is to determine a mapping type for a second transmission opportunity based at least in part on an assumed mapping type. In this example, the UE determines the mapping type for the first transmission opportunity to be mapping type A (as indicated by the TDRA field), and determines the mapping type for the second transmission opportunity to be mapping type B (based on the assumed mapping type being mapping type B).
[0071] As in Figure 5B As further noted in, in another example, the TDRA field may indicate mapping type A and mapping type B ({A, B}). Such an indication may be used, for example, when the UE is to determine a mapping type for a first transmission opportunity based at least in part on a first mapping type indicated by a DCI communication, and to determine a mapping type for a second transmission opportunity based at least in part on a second mapping type indicated by a DCI communication. In this example, the UE determines the mapping type for the first transmission opportunity to be mapping type A (as indicated by the TDRA field), and determines the mapping type for the second transmission opportunity to be mapping type B (as indicated by the TDRA field).
[0072] exist Figure 5C In the example time slot shown in , the TDRA field of the DCI communication scheduling the PDSCH including the first transmission opportunity and the second transmission opportunity indicates the starting symbol S as the first symbol (S=0) and the allocation length L as three symbols (L=3). Figure 5C As indicated in , in this example, the TDRA field may indicate a mapping type A that the UE applies to the second transmission opportunity. Such an indication may be used, for example, when the UE is to determine a mapping type for the second transmission opportunity based at least in part on a mapping type indicated by a DCI communication, and is to determine a mapping type for the first transmission opportunity based at least in part on an assumed mapping type. In this example, the UE determines the mapping type for the second transmission opportunity to be mapping type A (as indicated by the TDRA field), and determines the mapping type for the first transmission opportunity to be mapping type B (based on the assumed mapping type being mapping type B).
[0073] exist Figure 5D In the example time slot shown in , the TDRA field of the DCI communication scheduling the PDSCH including the first transmission opportunity and the second transmission opportunity indicates the starting symbol S as the first symbol (S=2) and the allocation length L as four symbols (L=4). Figure 5D As noted in , in one example, the TDRA field may indicate mapping type B. Such an indication may be used, for example, when the UE is to determine a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity based at least in part on an assumed mapping type of mapping type B (e.g., when the mapping type indicated by the TDRA field should match the assumed mapping type, or when the mapping type indicated by the TDRA field is to be ignored).
[0074] For example, when the UE is to determine the mapping type for the first transmission opportunity based at least in part on the mapping type indicated by the DCI communication, and is to determine the mapping type for the second transmission opportunity based at least in part on the assumed mapping type, it may also be indicated in Figure 5D In this example, the UE determines the mapping type for the first transmission opportunity to be mapping type B (as indicated by the TDRA field) and determines the mapping type for the second transmission opportunity to be mapping type B (based on the assumption that the mapping type is mapping type B).
[0075] Similarly, for example, when the UE is to determine the mapping type for the second transmission opportunity based at least in part on the mapping type indicated by the DCI communication, and is to determine the mapping type for the first transmission opportunity based at least in part on the assumed mapping type, it may also be indicated in Figure 5DIn this example, the UE determines the mapping type for the second transmission opportunity to be mapping type B (as indicated by the TDRA field) and determines the mapping type for the first transmission opportunity to be mapping type B (based on the assumption that the mapping type is mapping type B).
[0076] As indicated above, Figures 5A-5D is provided as an example. Other examples may differ from those described above. Figures 5A-5D as described.
[0077] Figure 6 is a diagram illustrating an example process 600, performed, for example, by a UE, in accordance with various aspects of the present disclosure. Example process 600 is an example of a UE (eg, UE 120, etc.) performing operations associated with a PDSCH mapping type determination for PDSCH repetitions in a slot.
[0078] As in Figure 6 , in some aspects, process 600 may include receiving a DCI communication scheduling a PDSCH including a first transmission opportunity and a second transmission opportunity (block 610). For example, the UE (e.g., using the receive processor 258, the controller / processor 280, the memory 282, etc.) may receive a DCI communication scheduling a PDSCH including a first transmission opportunity and a second transmission opportunity, as described above.
[0079] As in Figure 6 As further shown in , in some aspects, process 600 may include: determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity based at least in part on receiving a DCI communication scheduling a PDSCH including the first transmission opportunity and the second transmission opportunity (block 620). For example, the UE (e.g., using receive processor 258, controller / processor 280, memory 282, etc.) may determine a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity based at least in part on receiving a DCI communication scheduling a PDSCH including the first transmission opportunity and the second transmission opportunity, as described above.
[0080] Process 600 may include additional aspects, such as any single aspect or any combination of the aspects described below and / or described in conjunction with one or more other processes described elsewhere herein.
[0081] In a first aspect, process 600 includes determining a location of a DMRS for a first transmission opportunity and a location of a DMRS for a second transmission opportunity based at least in part on a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity.
[0082] In a second aspect, alone or in combination with the first aspect, the UE is configured to implement a scheme associated with time division multiplexing of multiple transmission opportunities within a single time slot.
[0083] In a third aspect, alone or in combination with one or more of the first and second aspects, process 600 includes: determining, based at least in part on a TCI field of the DCI communication indicating a first TCI state and a second TCI state, that a DCI communication schedule includes a PDSCH for a first transmission timing and a second transmission timing.
[0084] In the fourth aspect, alone or in combination with one or more aspects of the first to third aspects, determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity includes: determining a mapping type for the first transmission opportunity based at least in part on a mapping type indicated via DCI communication; and determining a mapping type for the second transmission opportunity based at least in part on an assumed mapping type.
[0085] In the fifth aspect, alone or in combination with one or more of the first to fourth aspects, the mapping type indicated through the DCI communication includes mapping type A or mapping type B, and the assumed mapping type includes mapping type B.
[0086] In the sixth aspect, alone or in combination with one or more aspects of the first to fifth aspects, determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity includes: determining a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on an assumed mapping type.
[0087] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the assumed mapping type includes mapping type B.
[0088] In the eighth aspect, alone or in combination with one or more of the first to seventh aspects, when the mapping type indicated by the DCI communication is different from the assumed mapping type, process 600 includes at least one of the following operations: identifying an error associated with the DCI communication, or avoiding receiving or processing PDSCH.
[0089] In the ninth aspect, alone or in combination with one or more aspects of the first to eighth aspects, when the mapping type indicated by the DCI communication is different from the assumed mapping type, process 600 includes: receiving the PDSCH based at least in part on the assumed mapping type rather than the mapping type indicated by the DCI communication.
[0090] In the tenth aspect, alone or in combination with one or more aspects of the first to ninth aspects, determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity includes: determining a mapping type for the second transmission opportunity based at least in part on a mapping type indicated via DCI communication; and determining a mapping type for the first transmission opportunity based at least in part on an assumed mapping type.
[0091] In the eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the mapping type indicated through the DCI communication includes mapping type A or mapping type B, and the assumed mapping type includes mapping type B.
[0092] In the twelfth aspect, alone or in combination with one or more aspects of the first to eleventh aspects, determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity includes: determining a mapping type for the first transmission opportunity based at least in part on a first mapping type indicated via a DCI communication; and determining a mapping type for the second transmission opportunity based at least in part on a second mapping type indicated via a DCI communication.
[0093] In the thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the first mapping type indicated by the DCI communication includes mapping type A, and the second mapping type indicated by the DCI communication includes mapping type B.
[0094] In the fourteenth aspect, alone or in combination with one or more aspects of the first to thirteenth aspects, the first mapping type indicated by the DCI communication includes mapping type B, and the second mapping type indicated by the DCI communication includes mapping type A or mapping type B.
[0095] In the fifteenth aspect, alone or in combination with one or more aspects of the first to fourteenth aspects, process 600 includes: identifying a technique for determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity; and determining a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on the technique.
[0096] In the sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, a technique for determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity is identified at least in part based on a configuration received via wireless resource control signaling.
[0097] In the seventeenth aspect, alone or in combination with one or more aspects of the first to sixteenth aspects, a technique for determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity is identified at least in part based on a parameter set comprising at least one of the following: a symbol offset between the first transmission opportunity and the second transmission opportunity, a configured position of a DMRS of a PDSCH, a starting symbol of a PDSCH, or a length of a transmission opportunity.
[0098] In the eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, the configured position of the DMRS of the PDSCH is associated with mapping type A.
[0099] Although Figure 6 Example blocks of process 600 are shown, but in some aspects process 600 may include Figure 6 The blocks of process 600 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in process 600. Additionally or alternatively, two or more of the blocks of process 600 may be executed in parallel.
[0100] The following provides an overview of some aspects of the disclosure:
[0101] Aspect 1: A method for wireless communication performed by a user equipment (UE), comprising: receiving downlink control information (DCI) communication of a physical downlink shared channel (PDSCH) that schedules a first transmission opportunity and a second transmission opportunity; and determining a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on receiving the DCI communication of the PDSCH that schedules the first transmission opportunity and the second transmission opportunity.
[0102] Aspect 2: According to the method of Aspect 1, determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity includes: determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity based at least in part on the assumed mapping type.
[0103] Aspect 3: The method according to Aspect 2, wherein the assumed mapping type includes mapping type B.
[0104] Aspect 4: The method according to any of Aspects 2-3, wherein, when the mapping type indicated by the DCI communication is different from the assumed mapping type, the method includes at least one of the following operations: identifying an error associated with the DCI communication, or avoiding receiving or processing the PDSCH.
[0105] Aspect 5: A method according to any of Aspects 2-4, wherein, when the mapping type indicated by the DCI communication is different from the assumed mapping type, the method includes: receiving the PDSCH based at least in part on the assumed mapping type rather than the mapping type indicated by the DCI communication.
[0106] Aspect 6: The method according to any aspect of Aspects 1-5 also includes: determining the position of a demodulation reference signal (DMRS) for the first transmission opportunity and the position of a DMRS for the second transmission opportunity based at least in part on the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity.
[0107] Aspect 7: The method according to any of aspects 1-6, wherein the UE is configured to implement a scheme associated with time division multiplexing of multiple transmission opportunities within a single time slot.
[0108] Aspect 8: The method according to any aspect of Aspects 1-7 also includes: determining that the DCI communication scheduling includes a PDSCH of a first transmission timing and a second transmission timing based at least in part on a transmission configuration indicator (TCI) field of the DCI communication indicating a first TCI state and a second TCI state.
[0109] Aspect 9: A method according to any aspect of Aspects 1-8, wherein determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity includes: determining the mapping type for the first transmission opportunity based at least in part on a mapping type indicated via DCI communication; and determining the mapping type for the second transmission opportunity based at least in part on an assumed mapping type.
[0110] Aspect 10: The method according to aspect 9, wherein the mapping type indicated through the DCI communication includes mapping type A or mapping type B, and the assumed mapping type includes mapping type B.
[0111] Aspect 11: A method according to any aspect of Aspects 1-10, wherein determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity includes: determining a mapping type for the second transmission opportunity based at least in part on a mapping type indicated via DCI communication; and determining a mapping type for the first transmission opportunity based at least in part on an assumed mapping type.
[0112] Aspect 12: The method according to aspect 11, wherein the mapping type indicated through the DCI communication includes mapping type A or mapping type B, and the assumed mapping type includes mapping type B.
[0113] Aspect 13: A method according to any aspect of Aspects 1-12, wherein determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity includes: determining a mapping type for the first transmission opportunity based at least in part on a first mapping type indicated via a DCI communication; and determining a mapping type for the second transmission opportunity based at least in part on a second mapping type indicated via a DCI communication.
[0114] Aspect 14: The method according to Aspect 13, wherein the first mapping type indicated through the DCI communication includes mapping type A, and the second mapping type indicated through the DCI communication includes mapping type B.
[0115] Aspect 15: A method according to any of aspects 13-14, wherein the first mapping type indicated through the DCI communication includes mapping type B, and the second mapping type indicated through the DCI communication includes mapping type A or mapping type B.
[0116] Aspect 16: The method according to any aspect of Aspects 1-15 also includes: identifying a technology for determining a mapping type for a first transmission opportunity and a mapping type for a second transmission opportunity; and determining a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on the technology.
[0117] Aspect 17: The method according to aspect 16, wherein the technique for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity is identified based at least in part on a configuration received via radio resource control signaling.
[0118] Aspect 18: A method according to any aspect of Aspects 16-17, wherein the technique for determining the mapping type for a first transmission opportunity and the mapping type for a second transmission opportunity is identified at least in part based on a set of parameters including at least one of the following: a symbol offset between the first transmission opportunity and the second transmission opportunity, a configured position of a demodulation reference signal (DMRS) of the PDSCH, a starting symbol of the PDSCH, or a length of the transmission opportunity.
[0119] Aspect 19: The method according to aspect 18, wherein the configured position of the DMRS of the PDSCH is associated with mapping type A.
[0120] Aspect 20: An apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions, the instructions being stored in the memory and executable by the processor to cause the apparatus to perform a method according to one or more of aspects 1-19.
[0121] Aspect 21: An apparatus for wireless communication, comprising a memory and one or more processors coupled to the memory, the memory and the one or more processors being configured to perform a method according to one or more of aspects 1-19.
[0122] Aspect 22: An apparatus for wireless communication, comprising at least one unit for performing the method according to one or more of aspects 1-19.
[0123] Aspect 23: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform a method according to one or more of aspects 1-19.
[0124] Aspect 24: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method according to one or more of aspects 1-19.
[0125] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the various aspects.
[0126] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, software should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, processes and / or functions and other examples. As used herein, a processor is implemented with a combination of hardware, firmware, and / or hardware and software. As used herein, a processor is implemented with a combination of hardware and / or hardware and software. It will be apparent that the system and / or method described herein can be implemented with a combination of hardware and / or hardware and software in different forms. The actual specialized control hardware or software code used to implement these systems and / or methods is not to limit various aspects. Therefore, the operation and behavior of the system and / or method are described herein without citing a specific software code, and it is to be understood that software and hardware can be designed to implement the system and / or method based at least in part on the description herein.
[0127] As used herein, satisfying a threshold may refer to a value being greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc., depending on the context.
[0128] It will be apparent that the systems and / or methods described herein may be implemented with various forms of hardware, software, and / or combinations of hardware and software. The actual specialized control hardware or software code used to implement these systems and / or methods is not a limitation of the various aspects. Therefore, the operation and behavior of the systems and / or methods are described herein without reference to specific software code, and it is to be understood that software and hardware may be designed to implement the systems and / or methods based, at least in part, on the description herein.
[0129] Although specific combinations of features are recorded in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. In fact, many of these features can be combined in a manner that is not specifically recorded in the claims and / or specifically disclosed in the specification. Although each dependent claim listed below may only directly depend on one claim, the disclosure of various aspects includes the combination of each dependent claim with each other claim in the claim set. In addition, the term "or" is intended to mean an inclusive "or", rather than an exclusive "or". That is, unless otherwise specified or clearly known from the context, phrases such as "X adopts A or B" are intended to mean any of the natural inclusive permutations. That is, for example, any of the following examples satisfies the phrase "X adopts A or B": X adopts A; X adopts B; or X adopts both A and B. When the term "and / or" is used in a list with two or more items, it means that any one of the listed items can be adopted individually, or any combination of two or more items in the listed items can be adopted. For example, if a composition is described as including components A, B, and / or C, the composition may include: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, or a combination of A, B, and C. A phrase referring to "at least one of" a list of items refers to any combination of those items, including single members. For 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 multiples of the same element (e.g., aa, aaa, aab, aac, abb, acc, bb, bbb, bbc, cc, ccc, or any other ordering of a, b, and c).
[0130] Elements, actions or instructions used herein should not be interpreted as key or necessary, unless clearly described as such. In addition, as used herein, the articles "a" and "an" are intended to include one or more projects, and can be used interchangeably with "one or more". In addition, as used herein, the terms "set" and "group" are intended to include one or more projects (e.g., related projects, unrelated projects, combinations of related projects and unrelated projects, etc.), and can be used interchangeably with "one or more". In the case of only one project, the phrase "only one" or similar language is used. In addition, as used herein, the terms "has", "have", "containing" and / or similar terms are intended to be open terms. In addition, unless otherwise expressly stated, the phrase "based on" is intended to mean "based at least in part on".
Claims
1. A method of wireless communication performed by a user equipment UE, comprising: receiving downlink control information DCI communication scheduling a physical downlink shared channel PDSCH including a first transmission opportunity and a second transmission opportunity within a single time slot; as well as determining a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on receiving the DCI communication scheduling the PDSCH including the first transmission opportunity and the second transmission opportunity, The determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity includes: The mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity are determined based at least in part on an assumed mapping type, wherein the assumed mapping type includes mapping type B.
2. The method according to claim 1, wherein: When the mapping type indicated by the DCI communication is different from the assumed mapping type, the method includes at least one of the following operations: identifying an error associated with the DCI communication, or Avoid receiving or processing the PDSCH.
3. The method according to claim 1, wherein: When the mapping type indicated by the DCI communication is different from the assumed mapping type, the method includes: The PDSCH is received based at least in part on the assumed mapping type instead of the mapping type indicated by the DCI communication.
4. The method according to claim 1, further comprising: A position of a demodulation reference signal (DMRS) for the first transmission opportunity and a position of a DMRS for the second transmission opportunity are determined based at least in part on the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity.
5. The method according to claim 1, wherein: The UE is configured to implement a scheme associated with time division multiplexing of multiple transmission opportunities within a single time slot.
6. The method according to claim 1, further comprising: The DCI communication schedules the PDSCH including the first transmission opportunity and the second transmission opportunity, determining based at least in part on a TCI field of the DCI communication indicating a first transmission configuration indicator (TCI) state and a second TCI state.
7. The method according to claim 1, wherein: The determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity comprises: determining the mapping type for the first transmission opportunity based at least in part on a mapping type indicated by the DCI communication; and The mapping type for the second transmission opportunity is determined based at least in part on the assumed mapping type.
8. The method according to claim 7, wherein: The mapping type indicated by the DCI communication includes mapping type A or mapping type B.
9. The method according to claim 1, further comprising: identifying a technique for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity; as well as The mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity are determined based at least in part on the technique.
10. The method according to claim 9, wherein: The technique for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity is identified based at least in part on a configuration received via radio resource control signaling.
11. The method according to claim 9, wherein: The technique for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity is identified based at least in part on a set of parameters including at least one of: a symbol offset between the first transmission opportunity and the second transmission opportunity, The configuration position of the demodulation reference signal DMRS of the PDSCH, The starting symbol of the PDSCH, or The length of the transmission opportunity.
12. The method according to claim 11, wherein: The configured position of the DMRS of the PDSCH is associated with mapping type A.
13. A user equipment UE for wireless communication, comprising: Memory; as well as One or more processors coupled to the memory, the memory comprising instructions executable by the one or more processors to cause the UE to: receiving downlink control information DCI communication scheduling a physical downlink shared channel PDSCH including a first transmission opportunity and a second transmission opportunity within a single time slot; as well as determining a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on receiving the DCI communication scheduling the PDSCH including the first transmission opportunity and the second transmission opportunity, Wherein, when determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity, the one or more processors are configured to: The mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity are determined based at least in part on an assumed mapping type, wherein the assumed mapping type includes mapping type B.
14. The UE according to claim 13, wherein: When the mapping type indicated by the DCI communication is different from the assumed mapping type, the one or more processors are configured to cause the UE to perform at least one of the following operations: identifying an error associated with the DCI communication, or Avoid receiving or processing the PDSCH.
15. The UE according to claim 13, wherein: When the mapping type indicated by the DCI communication is different from the assumed mapping type, the one or more processors are configured to cause the UE to perform the following operations: The PDSCH is received based at least in part on the assumed mapping type instead of the mapping type indicated by the DCI communication.
16. The UE according to claim 13, wherein: The one or more processors are further configured to: A position of a demodulation reference signal (DMRS) for the first transmission opportunity and a position of a DMRS for the second transmission opportunity are determined based at least in part on the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity.
17. The UE according to claim 13, wherein: The one or more processors are configured to cause the UE to implement a scheme associated with time division multiplexing of multiple transmission opportunities within a single time slot.
18. The UE according to claim 13, wherein: The one or more processors are further configured to: The DCI communication schedules the PDSCH including the first transmission opportunity and the second transmission opportunity, determining based at least in part on a TCI field of the DCI communication indicating a first transmission configuration indicator (TCI) state and a second TCI state.
19. The UE according to claim 13, wherein: The one or more processors are further configured to: determining the mapping type for the first transmission opportunity based at least in part on a mapping type indicated by the DCI communication; and The mapping type for the second transmission opportunity is determined based at least in part on the assumed mapping type.
20. The UE according to claim 19, wherein: The mapping type indicated by the DCI communication includes mapping type A or mapping type B.
21. The UE according to claim 13, wherein: The one or more processors are further configured to: identifying a technique for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity; and The mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity are determined based at least in part on the technique.
22. The UE according to claim 21, wherein: The one or more processors are configured to identify the technique for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity based at least in part on a configuration received via radio resource control signaling.
23. The UE according to claim 21, wherein: The one or more processors are configured to identify the technique for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity based at least in part on a set of parameters comprising at least one of: a symbol offset between the first transmission opportunity and the second transmission opportunity, The configuration position of the demodulation reference signal DMRS of the PDSCH, The starting symbol of the PDSCH, or The length of the transmission opportunity.
24. The UE according to claim 23, wherein: The configured position of the DMRS of the PDSCH is associated with mapping type A.
25. A non-transitory computer readable medium storing one or more instructions for wireless communication, the one or more instructions comprising: One or more instructions that, when executed by one or more processors of a user equipment UE, cause the UE to perform the following operations: receiving downlink control information DCI communication scheduling a physical downlink shared channel PDSCH including a first transmission opportunity and a second transmission opportunity within a single time slot; as well as determining a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on receiving the DCI communication scheduling the PDSCH including the first transmission opportunity and the second transmission opportunity, Wherein, when the one or more instructions cause the UE to determine the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity, cause the UE to perform the following operations: The mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity are determined based at least in part on an assumed mapping type, wherein the assumed mapping type includes mapping type B.
26. The non-transitory computer readable medium of claim 25, wherein: When the mapping type indicated by the DCI communication is different from the assumed mapping type, the one or more instructions cause the UE to perform at least one of the following operations: identifying an error associated with the DCI communication, or Avoid receiving or processing the PDSCH.
27. The non-transitory computer readable medium of claim 25, wherein: When the mapping type indicated by the DCI communication is different from the assumed mapping type, the one or more instructions cause the UE to perform the following operations: The PDSCH is received based at least in part on the assumed mapping type instead of the mapping type indicated by the DCI communication.
28. The non-transitory computer readable medium of claim 25, wherein: The one or more instructions further cause the UE to perform the following operations: A position of a demodulation reference signal (DMRS) for the first transmission opportunity and a position of a DMRS for the second transmission opportunity are determined based at least in part on the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity.
29. The non-transitory computer readable medium of claim 25, wherein: The one or more instructions cause the UE to implement a scheme associated with time division multiplexing of multiple transmission opportunities within a single time slot.
30. The non-transitory computer readable medium of claim 25, wherein: The one or more instructions further cause the UE to perform the following operations: The DCI communication schedules the PDSCH including the first transmission opportunity and the second transmission opportunity, determining based at least in part on a TCI field of the DCI communication indicating a first transmission configuration indicator (TCI) state and a second TCI state.
31. The non-transitory computer readable medium of claim 25, wherein: The one or more instructions cause the UE to perform the following operations: determining the mapping type for the first transmission opportunity based at least in part on a mapping type indicated by the DCI communication; and The mapping type for the second transmission opportunity is determined based at least in part on the assumed mapping type.
32. The non-transitory computer readable medium of claim 31 , wherein: The mapping type indicated by the DCI communication includes mapping type A or mapping type B.
33. The non-transitory computer readable medium of claim 25, wherein: The one or more instructions further cause the UE to perform the following operations: identifying a technique for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity; and The mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity are determined based at least in part on the technique.
34. The non-transitory computer readable medium of claim 33, wherein: The one or more instructions cause the UE to identify the technique for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity based at least in part on a configuration received via radio resource control signaling.
35. The non-transitory computer readable medium of claim 33, wherein: The one or more instructions cause the UE to identify the technique for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity based at least in part on a set of parameters including at least one of: a symbol offset between the first transmission opportunity and the second transmission opportunity, The configuration position of the demodulation reference signal DMRS of the PDSCH, The starting symbol of the PDSCH, or The length of the transmission opportunity.
36. The non-transitory computer readable medium of claim 35, wherein: The configured position of the DMRS of the PDSCH is associated with mapping type A.
37. An apparatus for wireless communication, comprising: means for receiving downlink control information DCI communications scheduling a physical downlink shared channel PDSCH including a first transmission opportunity and a second transmission opportunity within a single time slot; as well as means for determining a mapping type for the first transmission opportunity and a mapping type for the second transmission opportunity based at least in part on receiving the DCI communication scheduling the PDSCH including the first transmission opportunity and the second transmission opportunity, The unit for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity includes: Means for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity based at least in part on an assumed mapping type, wherein the assumed mapping type comprises mapping type B.
38. The device according to claim 37, wherein When the mapping type indicated by the DCI communication is different from the assumed mapping type, the apparatus includes at least one of the following: means for identifying an error associated with said DCI communication, or means for avoiding receiving or processing the PDSCH.
39. The device according to claim 37, wherein: When the mapping type indicated by the DCI communication is different from the assumed mapping type, the apparatus includes: means for receiving the PDSCH based at least in part on the assumed mapping type instead of the mapping type indicated by the DCI communication.
40. The apparatus of claim 37, further comprising: Means for determining a position of a demodulation reference signal (DMRS) for the first transmission opportunity and a position of a DMRS for the second transmission opportunity based at least in part on the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity.
41. The apparatus of claim 37, wherein: The apparatus is configured to implement a scheme associated with time division multiplexing of multiple transmission opportunities within a single time slot.
42. The apparatus of claim 37, further comprising: Means for determining that the DCI communication schedules the PDSCH including the first transmission opportunity and the second transmission opportunity based at least in part on a TCI field of the DCI communication indicating a first transmission configuration indicator (TCI) state and a second TCI state.
43. The apparatus of claim 37, wherein: The unit for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity includes: means for determining the mapping type for the first transmission opportunity based at least in part on a mapping type indicated by the DCI communication; and Means for determining the mapping type for the second transmission opportunity based at least in part on the assumed mapping type.
44. The device according to claim 43, wherein The mapping type indicated by the DCI communication includes mapping type A or mapping type B.
45. The apparatus of claim 37, further comprising: means for identifying a technique for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity; as well as Means for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity based at least in part on the technique.
46. The device according to claim 45, wherein The technique for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity is identified based at least in part on a configuration received via radio resource control signaling.
47. The device according to claim 45, wherein The technique for determining the mapping type for the first transmission opportunity and the mapping type for the second transmission opportunity is identified based at least in part on a set of parameters including at least one of: a symbol offset between the first transmission opportunity and the second transmission opportunity, The configuration position of the demodulation reference signal DMRS of the PDSCH, The starting symbol of the PDSCH, or The length of the transmission opportunity.
48. The apparatus of claim 47, wherein: The configured position of the DMRS of the PDSCH is associated with mapping type A.
Citation Information
Patent Citations
Time domain resource allocation for mobile communication
US20190149365A1