WO2021154252A1 - Procédé pour indication de combinaison de pdsch sur des faisceaux - Google Patents

Procédé pour indication de combinaison de pdsch sur des faisceaux Download PDF

Info

Publication number
WO2021154252A1
WO2021154252A1 PCT/US2020/015812 US2020015812W WO2021154252A1 WO 2021154252 A1 WO2021154252 A1 WO 2021154252A1 US 2020015812 W US2020015812 W US 2020015812W WO 2021154252 A1 WO2021154252 A1 WO 2021154252A1
Authority
WO
WIPO (PCT)
Prior art keywords
pdsch
pdschs
pdcchs
information
frequency region
Prior art date
Application number
PCT/US2020/015812
Other languages
English (en)
Inventor
Rapeepat Ratasuk
Kari Pekka Pajukoski
Karri Markus Ranta-Aho
Mark Cudak
Arto Lehti
Oskari TERVO
Original Assignee
Nokia Technologies Oy
Nokia Of America Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nokia Technologies Oy, Nokia Of America Corporation filed Critical Nokia Technologies Oy
Priority to PCT/US2020/015812 priority Critical patent/WO2021154252A1/fr
Publication of WO2021154252A1 publication Critical patent/WO2021154252A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0408—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas using two or more beams, i.e. beam diversity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/0871—Hybrid systems, i.e. switching and combining using different reception schemes, at least one of them being a diversity reception scheme
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/08—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the receiving station
    • H04B7/0868—Hybrid systems, i.e. switching and combining
    • H04B7/088—Hybrid systems, i.e. switching and combining using beam selection

Definitions

  • a communication system may be a facility that enables communication between two or more nodes or devices, such as fixed or mobile communication devices. Signals can be carried on wired or wireless carriers.
  • LTE Long Term Evolution
  • APs base stations or access points
  • eNBs Evolved Node B
  • UE user equipments
  • LTE has included a number of improvements or developments.
  • the method may include transmitting, by a network node, a configuration message to one or more user equipments (UEs), the configuration message indicating a time-frequency region and associated beam information of a downlink transmission; transmitting, by the network node, a plurality of physical downlink control channels (PDCCHs) in the time- frequency region, each PDCCH of the plurality of PDCCHs including scheduling information of a corresponding physical downlink shared channel (PDSCH) and at least one other PDSCH, the corresponding PDSCH and the at least one other PDSCH of a plurality of PDSCHs; and transmitting, by the network node, the plurality of PDSCHs in the time- frequency region.
  • UEs user equipments
  • FIG. 1 is a block diagram of a wireless network according to an example implementation.
  • FIG. 2 is a block diagram illustrating PDCCHs and PDSCHs across beams, according to an example implementation.
  • FIG. 3B is a message flow diagram illustrating combining of PDSCHs across beams, according to additional example implementation.
  • FIG. 4 is a flow chart illustrating combining of PDSCHs across beams, according to an example implementation.
  • FIG. 5 is a flow chart illustrating combining of PDSCHs across beams, according to an additional example implementation.
  • FIG. 6 is a block diagram of a node or wireless station (e.g., base station/access point or mobile station/user device/UE), according to an example implementation.
  • a node or wireless station e.g., base station/access point or mobile station/user device/UE
  • FIG. 1 is a block diagram of a wireless network 130 according to an example implementation.
  • user devices UDs
  • UEs user equipment
  • a base station 134
  • AP access point
  • eNB enhanced Node B
  • gNB next generation Node B
  • AP access point
  • AP access point
  • BS base station
  • eNB/gNB next generation Node B
  • BS or AP
  • AP provides wireless coverage within a cell 136, including to user devices 131,
  • BS 134 is also connected to a core network 150 via a SI interface 151. This is merely one simple example of a wireless network, and others may be used.
  • a user device may refer to a portable computing device that includes wireless mobile communication devices operating with or without a subscriber identification module (SIM), including, but not limited to, the following types of devices: a mobile station (MS), a mobile phone, a cell phone, a smartphone, a personal digital assistant (PDA), a handset, a device using a wireless modem (alarm or measurement device, etc.), a laptop and/or touch screen computer, a tablet, a phablet, a game console, a notebook, and a multimedia device, as examples, or any other wireless device.
  • SIM subscriber identification module
  • a user device may also be a nearly exclusive uplink only device, of which an example is a camera or video camera loading images or video clips to a network.
  • core network 150 may be referred to as Evolved Packet Core (EPC), which may include a mobility management entity (MME) which may handle or assist with mobility /handover of user devices between BSs, one or more gateways that may forward data and control signals between the BSs and packet data networks or the Internet, and other control functions or blocks.
  • EPC Evolved Packet Core
  • MME mobility management entity
  • gateways may forward data and control signals between the BSs and packet data networks or the Internet, and other control functions or blocks.
  • New Radio (5G) development may support a number of different applications or a number of different data service types, such as for example: machine type communications (MTC), enhanced machine type communication (eMTC), narrowband Internet of Things (NB-IoT), Internet of Things (IoT), and or narrowband IoT user devices, enhanced mobile broadband (eMBB), and ultra-reliable and low-latency communications (URLLC).
  • MTC machine type communications
  • eMTC enhanced machine type communication
  • NB-IoT narrowband Internet of Things
  • IoT Internet of Things
  • URLLC ultra-reliable and low-latency communications
  • IoT may refer to an ever-growing group of objects that may have Internet or network connectivity, so that these objects may send information to and receive information from other network devices.
  • many sensor type applications or devices may monitor a physical condition or a status, and may send a report to a server or other network device, e.g., when an event occurs.
  • Machine Type Communications MTC or machine to machine communications
  • MTC Machine Type Communications
  • eMBB Enhanced mobile broadband
  • Ultra-reliable and low-latency communications is a new data service type, or new usage scenario, which may be supported for New Radio (5G) systems.
  • 5G New Radio
  • This enables emerging new applications and services, such as industrial automations, autonomous driving, vehicular safety, e-health services, and so on.
  • 3GPP targets in providing up to e.g., 1 ms U-Plane (user/data plane) latency connectivity with l-le-5 reliability, by way of an illustrative example.
  • U-Plane user/data plane
  • URLLC user devices/UEs may require a significantly lower block error rate than other types of user devices/UEs as well as low latency.
  • a URLLC UE or URLLC application on a UE
  • MIMO Multiple Input, Multiple Output
  • MIMO may refer to a technique for increasing the capacity of a radio link using multiple transmit and receive antennas to exploit multipath propagation.
  • MIMO may include the use of multiple antennas at the transmitter and/or the receiver.
  • MIMO may include a multi-dimensional approach that transmits and receives two or more unique data streams through one radio channel.
  • MIMO may refer to a technique for sending and receiving more than one data signal simultaneously over the same radio channel by exploiting multipath propagation.
  • multi-user multiple input, multiple output enhances MIMO technology by allowing a base station (BS) or other wireless node to simultaneously transmit or receive multiple streams to different user devices or UEs, which may include simultaneously transmitting a first stream to a first UE, and a second stream to a second UE, via a same (or common or shared) set of physical resource blocks (PRBs) (e.g., where each PRB may include a set of time-frequency resources).
  • PRBs physical resource blocks
  • a BS may use precoding to transmit data to a UE (based on a precoder matrix or precoder vector for the UE). For example, a UE may receive reference signals or pilot signals, and may determine a quantized version of a DL channel estimate, and then provide the BS with an indication of the quantized DL channel estimate. The BS may determine a precoder matrix based on the quantized channel estimate, where the precoder matrix may be used to focus or direct transmitted signal energy in the best channel direction for the UE.
  • each UE may use a decoder matrix may be determined, e.g., where the UE may receive reference signals from the BS, determine a channel estimate of the DL channel, and then determine a decoder matrix for the DL channel based on the DL channel estimate.
  • a precoder matrix may indicate antenna weights (e.g., an amplitude/gain and phase for each weight) to be applied to an antenna array of a transmitting wireless device.
  • a decoder matrix may indicate antenna weights (e.g., an amplitude/gain and phase for each weight) to be applied to an antenna array of a receiving wireless device. This applies to UL as well when a UE is transmitting data to a BS.
  • a receiving wireless user device may determine a precoder matrix using Interference Rejection Combining (IRC) in which the user device may receive reference signals (or other signals) from a number of BSs (e.g., and may measure a signal strength, signal power, or other signal parameter for a signal received from each BS), and may generate a decoder matrix that may suppress or reduce signals from one or more interferers (or interfering cells or BSs), e.g., by providing a null (or very low antenna gain) in the direction of the interfering signal, in order to increase a signal-to interference plus noise ratio (SINR) of a desired signal.
  • IRC Interference Rejection Combining
  • a receiver may use, for example, a Linear Minimum Mean Square Error Interference Rejection Combining (LMMSE-IRC) receiver to determine a decoding matrix.
  • LMMSE-IRC Linear Minimum Mean Square Error Interference Rejection Combining
  • the IRC receiver and LMMSE-IRC receiver are merely examples, and other types of receivers or techniques may be used to determine a decoder matrix.
  • the receiving UE/user device may apply antenna weights (e.g., each antenna weight including amplitude and phase) to a plurality of antennas at the receiving UE or device based on the decoder matrix.
  • a precoder matrix may include antenna weights that may be applied to antennas of a transmitting wireless device or node. This applies to a receiving BS as well.
  • mm frequency bands e.g., frequencies greater than 24.25 GHz
  • beam- based or multi-beam operations e.g., using narrow beams to communicate with UEs
  • 5G/NR uses beam- based operations with many beams (e.g., a plurality of beams) configured per cell with each beam covering a portion of the overall cell coverage area.
  • SSBs synchronization signal blocks
  • RF beamforming or analog beamforming
  • a gNB may not know which beam to use for a transmission to the UE since the UE may be in idle mode and may not be reporting beam information to the gNB.
  • the gNB may transmit the PDSCH transmission on all beams of a beam-based operation with each PDSCH individually scheduled by corresponding downlink control information (DCI) in the PDCCH.
  • DCI downlink control information
  • UEs that are receiving the broadcast (or multicast) messages as described above will be aware that there are multiple copies of the message and that they can combine them to improve demodulation performance.
  • each copy of the message is individually scheduled by the PDCCH.
  • the UE has to decode the PDCCHs before the UE can combine PDSCHs.
  • the signal-to-noise ratio (SNR) on secondary or weaker beams (of the multi-beam operation) may be significantly lower than on the primary or preferred beam and decoding PDCCHs from secondary beams may be difficult.
  • SNR of a secondary beam may be 3 dB lower than the primary beam.
  • the PDCCH error rate on the secondary beam may be ⁇ 60% while the PDCCH error rate on the primary beam is ⁇ 1%.
  • the present disclosure describes procedures or mechanisms to efficiently combine PDSCHs across beams to improve network performance.
  • the present disclosure describes a method for transmitting a configuration message to one or more user equipments (UEs).
  • the configuration message indicates a time-frequency region and associated beam information of a downlink transmission.
  • the method further includes transmitting a plurality of physical downlink control channels (PDCCHs) in the time- frequency region.
  • PDCCHs physical downlink control channels
  • Each of the plurality of PDCCHs include information which indicates that corresponding plurality of physical downlink shared channels (PDSCHs) have same scheduling information (for example, the plurality of PDSCHs may be scheduled using one or more of: same resource allocation, MCS, precoding, etc., or alternately, that the content of the one or more DCI fields in the PDCCHs are the same).
  • the method includes transmitting the plurality of PDSCHs in the time-frequency region.
  • the present disclosure describes a method for receiving, by a user equipment (UE), a configuration message from a network node, the configuration message indicating a time-frequency region and associated beam information of a downlink transmission and receiving, by the UE, a plurality of physical downlink control channels (PDCCHs) in the time-frequency region from the network node, each of the plurality of PDCCHs including information indicating that corresponding plurality of physical downlink shared channels (PDSCHs) have same scheduling information.
  • a user equipment UE
  • a configuration message from a network node
  • the configuration message indicating a time-frequency region and associated beam information of a downlink transmission
  • PDCHs physical downlink control channels
  • the method further includes decoding, by the UE, at least one PDCCH of the plurality of PDCCHs; receiving, by the UE, at least two PDSCHs of the plurality of PDSCHs in the time-frequency region; and combining, by the UE, the at least two PDSCHs based at least on the decoding of the at least one PDCCH.
  • FIG. 2 is a block diagram 200 illustrating broadcasting of a message for beam-based operations, according to an example implementation.
  • message 202 may be broadcasted on: a) beam 210 which may include PDCCH 212 and PDSCH 216; b) beam 220 which may include PDCCHs 222, 224 and PDSCHs 226, 228; c) beam 230 which may include PDCCHs 232, 234 and PDSCHs 236, 238; and/or d) beam 290 which may include PDCCH 292 and PDSCH 296.
  • the gNB may broadcast a time-frequency region for a downlink transmission which may include PDCCHs and PDSCHs.
  • the time-frequency region may indicate where the multi-beam broadcast PDSCHs may be transmitted with the beam information.
  • the time-frequency region may be transmitted from the gNB to the UEs via a configuration message.
  • the gNB may indicate to the UEs that sub-frames 1-64 may have broadcast transmission with beam 210 on sub-frame 1, beam 220 on sub-frame 2, beam 230 on sub-frame 4, etc.
  • the gNB may indicate to the UEs that sub- frames 1-64 may have broadcast transmission with beam 210 on scheduling instance 1, beam 220 on scheduling instance 2, beam 230 on scheduling instance 4, etc.
  • the configuration message may be transmitted in a system information (SI) message.
  • SI system information
  • the gNB may transmit PDCCHs in the time- frequency region indicated in the configuration message.
  • each PDCCH may include information which may indicate that the PDSCHs (e.g., all PDSCHs) may have same scheduling information.
  • each PDCCH may include information about PDSCHs that are scheduled by other PDCCHs.
  • PDCCH_1 may contain scheduling information of PDSCH_1 and also scheduling information of PDSCH_2, PDSCH_3, etc.
  • the information may be conveyed implicitly.
  • an unused state in another field may be used to indicate the information.
  • the information may be conveyed explicitly, for example, via a parameter, which may be dynamic.
  • the parameter may be transmitted in downlink control information (DCI) of a PDCCH.
  • the information may include a parameter that is transmitted in DCI with a cyclic redundancy check (CRC) scrambled by a radio network temporary identifier (RNTI).
  • the parameter may be included in a SI message.
  • the scheduling information may include one or more of modulation and coding scheme (MCS), transport block size (TBS), resource allocation, etc.
  • the parameter may be tied to specific messages via RNTI (e.g., paging-RNTI (P-RNTI) for paging, random access-RNTI (RA_RNTI) for random access procedure (RAR), or Group-RNTI (G-RNTI) for multicast, SI- RNTI for system information, etc.).
  • RNTI e.g., paging-RNTI (P-RNTI) for paging, random access-RNTI (RA_RNTI) for random access procedure (RAR), or Group-RNTI (G-RNTI) for multicast, SI- RNTI for system information, etc.
  • redundancy version cycling may be used across multiple subframes or scheduling instances. This allows for incremental redundancy combining across subframes, which may improve performance from coding gain. For example, RV cycling of 0, 3, 2, 1, ... may be used.
  • the PDCCHs may indicate that PDSCHs may have same scheduling implementations, optionally, in some implementations, for example, the scheduling information is not the same as the redundancy version may be changed in a manner known among the PDSCHs.
  • all the PDCCHs of a transmission may be transmitted prior to the transmitting of the PDSCHs. This may allow for soft combining without UE having to buffer symbols ahead of time.
  • the above described procedures allow a UE to combine PDSCH transmissions across sub-frames (or scheduling instances) upon decoding just one PDCCH. Alternately, the UE may first attempt to decode a first PDSCH upon decoding just one PDCCH, and if unsuccessful, combine other PDSCH transmissions across sub-frames (or scheduling instances) upon decoding just one PDCCH.
  • FIG. 3A is a message flow diagram 300 illustrating combining of PDSCHs across beams, according to an example implementation.
  • FIG. 3A illustrates a network node, e.g., gNB 302 and one or more user equipments (UEs), e.g., UE 304.
  • UEs user equipments
  • FIG. 3A illustrates a network node, e.g., gNB 302 and one or more user equipments (UEs), e.g., UE 304.
  • UE 304 may be in a coverage area of gNB 302.
  • gNB 302 may transmit a configuration message to one or more UEs, e.g., UE 304, in the coverage area of the gNB.
  • the configuration message may indicate time-frequency region and associated beam information of a downlink transmission.
  • the configuration message may be transmitted in a SI message.
  • gNB 302 may transmit a plurality of PDCCHs in the time-frequency region indicated in the configuration message transmitted at 310.
  • each PDCCH of the plurality of PDCCHs may include scheduling information of a corresponding physical downlink shared channel (PDSCH) and at least one other PDSCH, the corresponding PDSCH and the at least one other PDSCH of a plurality of PDSCHs.
  • PDCCH_1 may include scheduling information of the corresponding PDSCH, e.g., PDSCH_1 and other PDSCHs, e.g., PDSCH_2, PDSCH_3, etc.
  • gNB 302 may transmit the plurality of PDSCHs in the time-frequency region indicated in the configuration message transmitted at 310.
  • UE 304 may successfully decode at least one of the plurality of the PDCCHs.
  • UE 304 may successfully decode PDCCH_1.
  • UE 304 may decode at least one of the plurality of the PDSCHs.
  • UE 304 may successfully decode PDSCH_1.
  • the implementations illustrated at 318 may be one example implementation where UE 304 can successfully decode PDSCH_1 based on successful decoding of PDCCH_1.
  • UE 304 may try to decode at least one of the plurality of the PDSCHs.
  • UE 304 may try to decode PDSCH_1 and the decoding of the PDSCH_1 may be unsuccessful.
  • the decoding of PDSCH_1 may be unsuccessful due to various reasons (e.g., poor quality signal etc.).
  • UE 304 may combine other PDSCHs (e.g., other PDSCH transmissions across sub-frames or scheduling instances).
  • UE 304 may combine PDSCH_1 with other PDSCHs, e.g., PDSCH_2, PDSCH_3, etc, and re-try decoding the PDSCHs.
  • the combining of the PDSCHs may be based on the information in the PDCCH_1 that other copies of PDSCH_1, which may have the same scheduling information, are available.
  • FIG. 3B is a message flow diagram 350 illustrating combining of PDSCHs across beams, according to an example implementation.
  • FIG. 3B illustrates a network node, e.g., gNB 302 and one or more user equipments (UEs), e.g., UE 304.
  • UEs user equipments
  • FIG. 3B illustrates a network node, e.g., gNB 302 and one or more user equipments (UEs), e.g., UE 304.
  • UE 304 may be in a coverage area of gNB 302.
  • gNB 302 may transmit PDCCHs in the time-frequency region indicated in the configuration message transmitted at 362.
  • each of the PDCSHs may include information which may indicate that the PDSCHs may have the same scheduling information.
  • UE 304 upon receiving the PDCCHs from gNB 302, may decode the PDCCHs. In some implementations, for example, UE 304 needs to successfully decode at least one PDCCH to be able to combine the PDSCHs across beams, as described above.
  • gNB 302 may transmit a plurality of physical downlink control channels (PDCCHs) in the time-frequency region.
  • PDCCHs physical downlink control channels
  • each PDCCH of the plurality of PDCCHs may include scheduling information of a corresponding physical downlink shared channel (PDSCH) and at least one other PDSCH, the corresponding PDSCH and the at least one other PDSCH of a plurality of PDSCHs.
  • PDSCH physical downlink shared channel
  • gNB 302 may transmit the plurality of PDSCHs in the time-frequency region.
  • Example 1 A method of communications, comprising: transmitting, by a network node, a configuration message to one or more user equipments (UEs), the configuration message indicating a time-frequency region and associated beam information of a downlink transmission; transmitting, by the network node, a plurality of physical downlink control channels (PDCCHs) in the time- frequency region, each PDCCH of the plurality of PDCCHs including scheduling information of a corresponding physical downlink shared channel (PDSCH) and at least one other PDSCH, the corresponding PDSCH and the at least one other PDSCH of a plurality of PDSCHs; and transmitting, by the network node, the plurality of PDSCHs in the time-frequency region.
  • UEs user equipments
  • Example 4 The method of any of Examples 1-3, wherein the plurality of PDCCHs are transmitted prior to the transmitting of the plurality of PDSCHs.
  • Example 6 The method of any of Examples 1-5, wherein the information includes a parameter that is transmitted in downlink control information (DCI) with a cyclic redundancy check (CRC) scrambled by a radio network temporary identifier (RNTI).
  • DCI downlink control information
  • CRC cyclic redundancy check
  • RNTI radio network temporary identifier
  • Example 9 The method of any of Examples 1-8, wherein the one or more user equipments (UEs) are in a coverage area of the gNB.
  • UEs user equipments
  • Example 10 The method of any of Examples 1-9, wherein the configuration message is for a multi-beam or a beam-based operation.
  • Example 14 A non-transitory computer-readable storage medium having stored thereon computer executable program code which, when executed on a computer system, causes the computer system to perform the steps of any of Examples 1-11.
  • FIG. 5 is a flow chart 500 illustrating combining of PDSCHs across beams, according to an additional example implementation.
  • a user equipment e.g., UE 304 may receive a configuration message from a network node.
  • the configuration message may indicate a time- frequency region and associated beam information of a downlink transmission.
  • UE 304 may receive the plurality of PDSCHs in the time-frequency region.
  • UE 304 may receive PDSCH_1, PDSCH_2,
  • UE 304 may decode a PDSCH corresponding to the decoded PDCCH.
  • UE 304 may combine the PDSCH with at least one other PDSCH of the plurality of PDSCHs. For example, in some implementations, UE 304 may combine PDSCH_1 with one or more of PDSCH_2, PDSCH_3, etc., in response to determining that the decoding of PDSCH_1 was unsuccessful.
  • UE 304 may decode the combined PDSCHs.
  • UE 304 may combine the PDSCHs, e.g., PDSCH_1, PDSCH_2, PDSCH_3, combine them, and successfully decoded them. It should be noted that UE 304, from the decoded PDCCH_1, has information that there are other copies of PDSCH_1, as described above.
  • Example 15 A method of communications, comprising: receiving, by a user equipment (UE), a configuration message from a network node, the configuration message indicating a time- frequency region and associated beam information of a downlink transmission; receiving, by the UE, a plurality of physical downlink control channels (PDCCHs) in the time-frequency region from the network node, each PDCCH of the plurality of PDCCHs including scheduling information of at least one corresponding physical downlink shared channel (PDSCH) and at least one other PDSCH, the corresponding PDSCH and the at least one other PDSCH of a plurality of PDSCHs; decoding, by the UE, a PDCCH of the plurality of PDCCHs; receiving, by the UE, the plurality of PDSCHs in the time frequency region; decoding, by the UE, a PDSCH corresponding to the decoded PDCCH; determining, by the UE, that the decoding of the PD
  • PDSCH physical downlink control channels
  • Example 16 The method of Example 15, wherein the configuration is received via a system information (SI) message.
  • SI system information
  • Example 17 The method of any of Examples 15-16, wherein the plurality of PDCCHs are received prior to the receiving of the plurality of PDSCHs.
  • Example 18 The method of any of Examples 15-17, wherein the information includes a parameter that is received in downlink control information (DCI).
  • DCI downlink control information
  • Example 21 The method of any of Examples 15-20, wherein the network node is a gNB.
  • Example 22 The method of any of Examples 15-21, wherein the configuration message is for a multi-beam or a beam-based operation.
  • Example 23 The method of any of Examples 15-22, wherein the receiving of the configuration message, the plurality of PDCCHs, and/or the plurality of PDSCHs are based on: a broadcasting operation; a multicasting operation; a unicasting operation; or a combination thereof.
  • Example 24 The method of any of Examples 15-23, wherein the combining includes redundancy version cycling across a plurality of subframes or scheduling instances.
  • Example 25 An apparatus comprising at least one processor and at least one memory including computer instructions, when executed by the at least one processor, cause the apparatus to perform a method of any of Examples 15-24.
  • Example 26 An apparatus comprising means for performing a method of any of Examples 15-24.
  • Example 27 A non-transitory computer-readable storage medium having stored thereon computer executable program code which, when executed on a computer system, causes the computer system to perform the steps of any of Examples 15-24.
  • Example 28 A method of communications, comprising: receiving, by a user equipment (UE), a configuration message from a network node, the configuration message indicating a time- frequency region and associated beam information of a downlink transmission; receiving, by the UE, a plurality of physical downlink control channels (PDCCHs) in the time-frequency region from the network node, each PDCCH of the plurality of PDCCHs including scheduling information of at least one corresponding physical downlink shared channel (PDSCH) and at least one other PDSCH, the corresponding PDSCH and the at least one other PDSCH of a plurality of PDSCHs; decoding, by the UE, a PDCCH of the plurality of PDCCHs; receiving, by the UE, the PDSCHs in the time frequency region; and decoding, by the UE, a PDSCH corresponding to the decoded PDCCH, the decoding of the PDSCH being successful.
  • PDSCH physical downlink control channels
  • FIG. 6 is a block diagram 600 of a wireless station (e.g., user equipment (UE)/user device or AP/gNB/MgNB/SgNB) according to an example implementation.
  • the wireless station 600 may include, for example, one or more RF (radio frequency) or wireless transceivers 602 A, 602B, where each wireless transceiver includes a transmitter to transmit signals and a receiver to receive signals.
  • the wireless station also includes a processor or control unit/entity (controller) 604/608 to execute instructions or software and control transmission and receptions of signals, and a memory 606 to store data and or instructions.
  • Processor 604 may also make decisions or determinations, generate frames, packets or messages for transmission, decode received frames or messages for further processing, and other tasks or functions described herein.
  • Processor 604 which may be a baseband processor, for example, may generate messages, packets, frames or other signals for transmission via wireless transceiver 602 (602A or 602B).
  • Processor 604 may control transmission of signals or messages over a wireless network, and may control the reception of signals or messages, etc., via a wireless network (e.g., after being down-converted by wireless transceiver 602, for example).
  • Processor 604 may be programmable and capable of executing software or other instructions stored in memory or on other computer media to perform the various tasks and functions described above, such as one or more of the tasks or methods described above.
  • Processor 604 may be (or may include), for example, hardware, programmable logic, a programmable processor that executes software or firmware, and/or any combination of these.
  • processor 604 and transceiver 602 together may be considered as a wireless transmitter/receiver system, for example.
  • a controller (or processor) 608 may execute software and instructions, and may provide overall control for the station 600, and may provide control for other systems not shown in FIG. 6, such as controlling input/output devices (e.g., display, keypad), and/or may execute software for one or more applications that may be provided on wireless station 600, such as, for example, an email program, audio/video applications, a word processor, a Voice over IP application, or other application or software.
  • a storage medium may be provided that includes stored instructions, which when executed by a controller or processor may result in the processor 604, or other controller or processor, performing one or more of the functions or tasks described above.
  • 602A/602B may receive signals or data and/or transmit or send signals or data.
  • Processor 604 (and possibly transceivers 602A/602B) may control the RF or wireless transceiver 602A or 602B to receive, send, broadcast or transmit signals or data.
  • the aspects are not, however, restricted to the system that is given as an example, but a person skilled in the art may apply the solution to other communication systems.
  • Another example of a suitable communications system is the 5G concept. It is assumed that network architecture in 5G will be quite similar to that of the LTE-advanced. 5G is likely to use multiple input - multiple output (MIMO) antennas, many more base stations or nodes than the LTE (a so-called small cell concept), including macro sites operating in co-operation with smaller stations and perhaps also employing a variety of radio technologies for better coverage and enhanced data rates.
  • the smaller station may be a small cell operating at a lower power or at a higher frequency (e.g., above 6GHz).
  • the smaller station may be a small cell that may be used as a secondary cell (SCell) for a UE (instead of a primary cell (PCell) or mobility anchor).
  • SCell secondary cell
  • PCell primary cell
  • NFV network functions virtualization
  • a virtualized network function may comprise one or more virtual machines running computer program codes using standard or general type servers instead of customized hardware. Cloud computing or data storage may also be utilized.
  • radio communications this may mean node operations may be carried out, at least partly, in a server, host or node operationally coupled to a remote radio head. It is also possible that node operations will be distributed among a plurality of servers, nodes or hosts. It should also be understood that the distribution of labor between core network operations and base station operations may differ from that of the LTE or even be non-existent.
  • Implementations of the various techniques described herein may be implemented in digital electronic circuitry, or in computer hardware, firmware, software, or in combinations of them. Implementations may be implemented as a computer program product, i.e., a computer program tangibly embodied in an information carrier, e.g., in a machine-readable storage device or in a propagated signal, for execution by, or to control the operation of, a data processing apparatus, e.g., a programmable processor, a computer, or multiple computers. Implementations may also be provided on a computer readable medium or computer readable storage medium, which may be a non-transitory medium.
  • Implementations of the various techniques may also include implementations provided via transitory signals or media, and/or programs and/or software implementations that are downloadable via the Internet or other network(s), either wired networks and/or wireless networks.
  • implementations may be provided via machine type communications (MTC), and also via an Internet of Things (IOT).
  • MTC machine type communications
  • IOT Internet of Things
  • the computer program may be in source code form, object code form, or in some intermediate form, and it may be stored in some sort of carrier, distribution medium, or computer readable medium, which may be any entity or device capable of carrying the program.
  • Such carriers include a record medium, computer memory, read-only memory, photoelectrical and/or electrical carrier signal, telecommunications signal, and software distribution package, for example.
  • the computer program may be executed in a single electronic digital computer or it may be distributed amongst a number of computers.
  • implementations of the various techniques described herein may use a cyber-physical system (CPS) (a system of collaborating computational elements controlling physical entities).
  • CPS may enable the implementation and exploitation of massive amounts of interconnected ICT devices (sensors, actuators, processors microcontrollers, etc embedded in physical objects at different locations.
  • ICT devices sensors, actuators, processors microcontrollers, etc.
  • Mobile cyber physical systems in which the physical system in question has inherent mobility, are a subcategory of cyber-physical systems. Examples of mobile physical systems include mobile robotics and electronics transported by humans or animals. The rise in popularity of smartphones has increased interest in the area of mobile cyber-physical systems. Therefore, various implementations of techniques described herein may be provided via one or more of these technologies.
  • a computer program such as the computer program(s) described above, can be written in any form of programming language, including compiled or interpreted languages, and can be deployed in any form, including as a stand-alone program or as a module, component, subroutine, or other unit or part of it suitable for use in a computing environment.
  • a computer program can be deployed to be executed on one computer or on multiple computers at one site or distributed across multiple sites and interconnected by a communication network.
  • Method steps may be performed by one or more programmable processors executing a computer program or computer program portions to perform functions by operating on input data and generating output. Method steps also may be performed by, and an apparatus may be implemented as, special purpose logic circuitry, e.g., an FPGA (field programmable gate array) or an ASIC (application specific integrated circuit).
  • FPGA field programmable gate array
  • ASIC application specific integrated circuit
  • processors suitable for the execution of a computer program include, by way of example, both general and special purpose microprocessors, and any one or more processors of any kind of digital computer, chip or chipset.
  • a processor will receive instructions and data from a read only memory or a random access memory or both.
  • Elements of a computer may include at least one processor for executing instructions and one or more memory devices for storing instructions and data.
  • a computer also may include, or be operatively coupled to receive data from or transfer data to, or both, one or more mass storage devices for storing data, e.g., magnetic, magneto optical disks, or optical disks.
  • Information carriers suitable for embodying computer program instructions and data include all forms of non volatile memory, including by way of example semiconductor memory devices, e.g., EPROM, EEPROM, and flash memory devices; magnetic disks, e.g., internal hard disks or removable disks; magneto optical disks; and CD ROM and DVD-ROM disks.
  • semiconductor memory devices e.g., EPROM, EEPROM, and flash memory devices
  • magnetic disks e.g., internal hard disks or removable disks
  • magneto optical disks e.g., CD ROM and DVD-ROM disks.
  • the processor and the memory may be supplemented by, or incorporated in, special purpose logic circuitry.

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention concerne un procédé, un appareil et un support d'enregistrement lisible par ordinateur destinés à combiner des PDSCH sur des faisceaux. Dans un mode de réalisation, le procédé peut consister à émettre, par un nœud de réseau, un message de configuration vers un ou plusieurs équipements utilisateurs (UE)), le message de configuration indiquant une région temps-fréquence et des informations de faisceau associées d'une transmission en liaison descendante ; à émettre, par le nœud de réseau, une pluralité de canaux physiques de contrôle descendant (PDCCH) dans la région temps-fréquence, chaque PDCCH de la pluralité de PDCCH comprenant des informations de planification d'un canal physique partagé descendant (PDSCH) correspondant) et au moins un autre PDSCH, le PDSCH correspondant et le ou les autres PDSCH d'une pluralité de PDSCH ; et à émettre, par le nœud de réseau, la pluralité de PDSCH dans la région temps-fréquence.
PCT/US2020/015812 2020-01-30 2020-01-30 Procédé pour indication de combinaison de pdsch sur des faisceaux WO2021154252A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/US2020/015812 WO2021154252A1 (fr) 2020-01-30 2020-01-30 Procédé pour indication de combinaison de pdsch sur des faisceaux

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US2020/015812 WO2021154252A1 (fr) 2020-01-30 2020-01-30 Procédé pour indication de combinaison de pdsch sur des faisceaux

Publications (1)

Publication Number Publication Date
WO2021154252A1 true WO2021154252A1 (fr) 2021-08-05

Family

ID=77079620

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2020/015812 WO2021154252A1 (fr) 2020-01-30 2020-01-30 Procédé pour indication de combinaison de pdsch sur des faisceaux

Country Status (1)

Country Link
WO (1) WO2021154252A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117015039A (zh) * 2023-09-28 2023-11-07 武汉世炬信息技术有限公司 数据传输方法及系统

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180219606A1 (en) * 2017-02-01 2018-08-02 Samsung Electronics Co., Ltd. Beam management of downlink data channel and downlink control channel for 5g next radio systems
US20180220398A1 (en) * 2017-01-27 2018-08-02 Qualcomm Incorporated Multi-link new radio (nr)-physical downlink control channel (pdcch) design
US20190052406A1 (en) * 2017-08-11 2019-02-14 Mediatek Inc. Transmission For Ultra-Reliable And Low-Latency Communications In Mobile Communications
WO2019051242A2 (fr) * 2017-09-08 2019-03-14 Convida Wireless, Llc Gestion de communications à l'aide d'informations de commande de liaison descendante
US20190313429A1 (en) * 2018-04-10 2019-10-10 FG Innovation Company Limited Methods and related devices for performing cross-carrier scheduling with beam operations

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180220398A1 (en) * 2017-01-27 2018-08-02 Qualcomm Incorporated Multi-link new radio (nr)-physical downlink control channel (pdcch) design
US20180219606A1 (en) * 2017-02-01 2018-08-02 Samsung Electronics Co., Ltd. Beam management of downlink data channel and downlink control channel for 5g next radio systems
US20190052406A1 (en) * 2017-08-11 2019-02-14 Mediatek Inc. Transmission For Ultra-Reliable And Low-Latency Communications In Mobile Communications
WO2019051242A2 (fr) * 2017-09-08 2019-03-14 Convida Wireless, Llc Gestion de communications à l'aide d'informations de commande de liaison descendante
US20190313429A1 (en) * 2018-04-10 2019-10-10 FG Innovation Company Limited Methods and related devices for performing cross-carrier scheduling with beam operations

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117015039A (zh) * 2023-09-28 2023-11-07 武汉世炬信息技术有限公司 数据传输方法及系统
CN117015039B (zh) * 2023-09-28 2024-02-06 武汉世炬信息技术有限公司 数据传输方法及系统

Similar Documents

Publication Publication Date Title
US20210288757A1 (en) Flexible Semi-Static HARQ-ACK Codebook Overhead
US20230189036A1 (en) Enhanced early measurement reporting
US20220400495A1 (en) Virtual multi-transmission reception point/panel transmission for urllc
US20210392090A1 (en) Managing packet duplication
EP4133674A1 (fr) Fourniture de signal de référence d'informations d'état de canal à puissance nulle et configuration de l'adaptation de débit dans l'agrégation de porteuses
US11985622B2 (en) Method of correcting time of departure in observed time difference of arrival positioning
WO2020207745A1 (fr) Attribution de ressources d'unité distribuée (du) d'accès et de liaison terrestre intégré (iab) pour double connectivité
US20220103293A1 (en) Optimized multi connectivity and data duplication
US20230144930A1 (en) Harq-ack delay to support 14 harq processes in enhanced machine type communications
WO2021154252A1 (fr) Procédé pour indication de combinaison de pdsch sur des faisceaux
US11743830B2 (en) Panel activation at a user equipment
WO2021090239A1 (fr) Déclenchement d'émission de signal de référence de sondage
EP3900455A1 (fr) Réduction de latence et de surdébit de planification de liaison montante pour des tailles de paquet standard
US11923874B2 (en) Codebook compression with lossy encoding for low probability events
US20230224135A1 (en) Improved tbs indication and cqi reporting for lower bler targets
US20230269022A1 (en) Link adaptation improvement with pci reporting enhancements
US20230362753A1 (en) Dual active protocol stack handover with coordinated pattern
US20230319801A1 (en) Time domain adaptation of multi-carrier pdcch monitoring

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 20916475

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20916475

Country of ref document: EP

Kind code of ref document: A1