WO2024051539A1 - Procédé et appareil de détermination de paramètre de quasi-co-localisation, et terminal - Google Patents

Procédé et appareil de détermination de paramètre de quasi-co-localisation, et terminal Download PDF

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Publication number
WO2024051539A1
WO2024051539A1 PCT/CN2023/115639 CN2023115639W WO2024051539A1 WO 2024051539 A1 WO2024051539 A1 WO 2024051539A1 CN 2023115639 W CN2023115639 W CN 2023115639W WO 2024051539 A1 WO2024051539 A1 WO 2024051539A1
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WIPO (PCT)
Prior art keywords
reference signal
downlink
quasi
terminal
reception
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PCT/CN2023/115639
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English (en)
Chinese (zh)
Inventor
吴凯
潘学明
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维沃移动通信有限公司
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Publication of WO2024051539A1 publication Critical patent/WO2024051539A1/fr

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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/08—Non-scheduled access, e.g. ALOHA
    • H04W74/0833—Random access procedures, e.g. with 4-step access

Definitions

  • the present application belongs to the field of communication technology, and specifically relates to a method, device and terminal for determining quasi-co-location parameters.
  • Physical Random Access Channel (Physical Random Access Channel, PRACH) repeated transmission is a method to improve PRACH coverage.
  • One way to achieve PRACH repeated transmission is that the terminal (also called User Equipment (UE)) can initiate Multiple independent PRACH transmission processes.
  • UE User Equipment
  • the terminal's assumption of receiving the random access response (Random Access Response, RAR) and scheduling the beam of the RAR's physical downlink control channel (Physical Downlink Control Channel, PDCCH) is certain, that is, When initiating the PRACH process, select the beam corresponding to the reference signal associated with the PRACH resource.
  • RAR Random Access Response
  • PDCCH Physical Downlink Control Channel
  • Embodiments of the present application provide a method, device and terminal for determining quasi-co-location parameters, which can solve the problem that when RAR windows overlap, the assumptions of the beams sent by the PDCCH that schedules the RAR received by the terminal are ambiguous, which may lead to receiving behavior. unclear or reduced reception performance.
  • the first aspect provides a method for determining quasi-co-location parameters, which is applied to terminals.
  • the method includes:
  • the terminal sends X physical random access channels PRACH, and obtains the first listening opportunity; wherein the first listening opportunity is located at the overlapping time of the listening windows corresponding to Y PRACHs among the X PRACHs, and the X and Y is a positive integer greater than 1;
  • the terminal determines a first reference signal corresponding to the first listening opportunity
  • the terminal uses the quasi-co-location parameter corresponding to the first reference signal to perform first downlink reception at the first listening opportunity.
  • a device for determining quasi-co-location parameters including:
  • the sending module is used to send X physical random access channels PRACH and obtain the first monitoring opportunity; where, The first listening opportunity is located at the overlapping time of the listening windows corresponding to Y PRACHs among the X PRACHs, and the X and Y are positive integers greater than 1;
  • An execution module configured to determine the first reference signal corresponding to the first listening opportunity
  • a receiving module configured to use a quasi-co-location parameter corresponding to the first reference signal to perform first downlink reception at the first listening opportunity.
  • a terminal in a third aspect, includes a processor and a memory.
  • the memory stores programs or instructions that can be run on the processor.
  • the program or instructions are executed by the processor, the following implementations are implemented: The steps of the method described in one aspect.
  • a terminal including a processor and a communication interface, wherein the processor is used to determine a first reference signal corresponding to the first listening opportunity, and the communication interface is used to send X physical random Access the channel PRACH, and obtain the first listening opportunity; use the quasi-co-location parameter corresponding to the first reference signal to perform the first downlink reception at the first listening opportunity.
  • a system for determining quasi-co-location parameters including: a terminal and a network side device.
  • the terminal may be configured to perform the steps of the method for determining quasi-co-location parameters as described in the first aspect.
  • a readable storage medium is provided. Programs or instructions are stored on the readable storage medium. When the programs or instructions are executed by a processor, the steps of the method described in the first aspect are implemented.
  • a chip in a seventh aspect, includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to implement the method described in the first aspect. .
  • a computer program/program product is provided, the computer program/program product is stored in a storage medium, and the computer program/program product is executed by at least one processor to implement the method described in the first aspect Steps of the method for determining quasi-co-location parameters.
  • the terminal sends X physical random access channels PRACH and obtains the first listening opportunity; wherein the first listening opportunity is located in the listening window corresponding to Y PRACH among the X PRACHs. Overlap time; the terminal determines the first reference signal corresponding to the first listening opportunity; the terminal uses the quasi-co-location parameter corresponding to the first reference signal to perform the first downlink at the first listening opportunity. reception, thereby clarifying the reference signal corresponding to the quasi-co-location parameters for downlink reception in the overlapping portion of the RAR window, allowing the terminal to simply and clearly determine the receiving beam, and receive the network-side device with an overall more appropriate receiving beam.
  • Figure 1 is a schematic structural diagram of a wireless communication system applicable to the embodiment of the present application.
  • Figure 2 is a schematic flowchart of a method for determining quasi-co-location parameters provided by an embodiment of the present application
  • Figure 3 is a schematic diagram of a PRACH process provided by an embodiment of the present application.
  • Figure 4 is a schematic diagram of another PRACH process provided by an embodiment of the present application.
  • Figure 5 is a schematic structural diagram of a device for determining quasi-co-location parameters provided by an embodiment of the present application
  • Figure 6 is a schematic structural diagram of a communication device provided by an embodiment of the present application.
  • Figure 7 is a schematic structural diagram of a terminal that implements an embodiment of the present application.
  • first, second, etc. in the description and claims of this application are used to distinguish similar objects and are not used to describe a specific order or sequence. It is to be understood that the terms so used are interchangeable under appropriate circumstances so that the embodiments of the present application can be practiced in sequences other than those illustrated or described herein, and “first” and “second” are intended to distinguish It is usually one type, and the number of objects is not limited.
  • the first object can be one or multiple.
  • “and/or” in the description and claims indicates at least one of the connected objects, and the character “/" generally indicates that the related objects are in an "or” relationship.
  • LTE Long Term Evolution
  • LTE-Advanced, LTE-A Long Term Evolution
  • LTE-A Long Term Evolution
  • CDMA Code Division Multiple Access
  • TDMA Time Division Multiple Access
  • FDMA Frequency Division Multiple Access
  • OFDMA Orthogonal Frequency Division Multiple Access
  • SC-FDMA Single-carrier Frequency Division Multiple Access
  • NR New Radio
  • FIG. 1 shows a block diagram of a wireless communication system to which embodiments of the present application are applicable.
  • the wireless communication system includes a terminal 11 and a network side device 12.
  • the terminal 11 may be a mobile phone, a tablet computer (Tablet Personal Computer), a laptop computer (Laptop Computer), or a notebook computer, a personal digital assistant (Personal Digital Assistant, PDA), a palmtop computer, a netbook, or a super mobile personal computer.
  • Tablet Personal Computer Tablet Personal Computer
  • laptop computer laptop computer
  • PDA Personal Digital Assistant
  • PDA Personal Digital Assistant
  • UMPC ultra-mobile personal computer
  • UMPC mobile Internet device
  • MID mobile Internet Device
  • AR augmented reality
  • VR virtual reality
  • robots wearable devices
  • WUE Vehicle User Equipment
  • PUE Pedestrian User Equipment
  • smart home home equipment with wireless communication functions, such as refrigerators, TVs, washing machines or furniture, etc.
  • game consoles personal computers (personal computer, PC), teller machine or self-service machine and other terminal-side devices.
  • Wearable devices include: smart watches, smart bracelets, smart headphones, smart glasses, smart jewelry (smart bracelets, smart bracelets, smart rings, smart necklaces, smart anklets) bracelets, smart anklets, etc.), smart wristbands, smart clothing, etc.
  • Network side equipment 12 may include access network equipment or core network equipment, which , the access network device 12 may also be called a radio access network device, a radio access network (Radio Access Network, RAN), a radio access network function or a radio access network unit.
  • the access network device 12 may include a base station, a Wireless Local Area Network (WLAN) access point or a WiFi node, etc.
  • WLAN Wireless Local Area Network
  • the base station may be called a Node B, an evolved Node B (eNB), an access point, Base Transceiver Station (BTS), radio base station, radio transceiver, Basic Service Set (BSS), Extended Service Set (ESS), home B-node, home evolved B-node , Transmitting Receiving Point (TRP) or some other suitable term in the field, as long as the same technical effect is achieved, the base station is not limited to specific technical terms. It should be noted that in the embodiment of the present application This introduction only takes the base station in the NR system as an example, and does not limit the specific type of base station.
  • eNB evolved Node B
  • BTS Base Transceiver Station
  • BSS Basic Service Set
  • ESS Extended Service Set
  • TRP Transmitting Receiving Point
  • Core network equipment may include but is not limited to at least one of the following: core network nodes, core network functions, mobility management entities (Mobility Management Entity, MME), access mobility management functions (Access and Mobility Management Function, AMF), session management functions (Session Management Function, SMF), User Plane Function (UPF), Policy Control Function (PCF), Policy and Charging Rules Function (PCRF), Edge Application Service Discovery function (Edge Application Server Discovery Function, EASDF), Unified Data Management (UDM), Unified Data Repository (UDR), Home Subscriber Server (HSS), centralized network configuration ( Centralized network configuration (CNC), Network Repository Function (NRF), Network Exposure Function (NEF), Local NEF (Local NEF, or L-NEF), Binding Support Function (Binding Support Function, BSF), application function (Application Function, AF), etc.
  • MME mobility management entities
  • AMF Access and Mobility Management Function
  • SMF Session Management Function
  • UPF User Plane Function
  • PCF Policy Control Function
  • this embodiment of the present application provides a method for determining quasi-co-location parameters.
  • the execution subject of this method is a terminal.
  • this method can be executed by software or hardware installed on the terminal.
  • the method includes the following steps.
  • the terminal sends X physical random access channels PRACH, and obtains the first listening opportunity; wherein the first listening opportunity is located at the overlapping time of the listening windows corresponding to Y PRACHs among the X PRACHs, and the X and Y is a positive integer greater than 1.
  • the listening window is used to monitor the RAR-related downlink channels sent by the network side device, such as the PDCCH used to schedule the RAR, and the physical downlink sharing used to transmit the RAR.
  • Channel Physical Downlink Shared Channel, PDSCH
  • TC-RNTI Temporary Cell Radio Network Temporary Identifier
  • the listening window can also be called a Random Access Response Window (RAR) window), for the sake of simplicity, in the following embodiments, the RAR window is used as the monitoring window as an example for illustration.
  • Each RAR window may contain multiple monitoring occasions, and the terminal monitors network-side devices in each monitoring occasion.
  • each PRACH will have an independent RAR window to monitor the RAR-related downlink channel.
  • the terminal if the RAR windows corresponding to Y PRACHs overlap, then at the first listening opportunity where the overlap time is located, since the network side device may send related downlink channels of RARs for different PRACHs, the terminal is not sure about the RAR sent by the network side device.
  • the beam used when related to the downlink channel is the first reference signal corresponding to the quasi co-location (QCL) parameter used when the terminal is not sure of the first downlink reception within the first listening opportunity.
  • QCL quasi co-location
  • the first reference signal may be a synchronization information block (Synchronization Signal and PBCH block, SSB), or a channel state information reference signal (Channel State Information Reference Signal, CSI-RS), etc.
  • a synchronization information block Synchronization Signal and PBCH block, SSB
  • a channel state information reference signal Channel State Information Reference Signal, CSI-RS
  • the RAR windows corresponding to the two PRACHs partially overlap.
  • the downlink reference signals associated with the two PRACHs are SSB#0 and SSB#1 respectively.
  • the monitoring opportunity where the overlapping part is located is the first monitoring opportunity.
  • S220 The terminal determines the first reference signal corresponding to the first listening opportunity.
  • the first reference signal corresponding to the first listening opportunity may include a downlink reference signal associated with the PRACH process corresponding to the first listening opportunity.
  • the terminal may determine the first reference signal in various ways.
  • the first reference signal is one of L downlink reference signals associated with the Y PRACHs, and L is less than or A positive integer equal to Y
  • the first reference signal can be any one of the L downlink reference signals. Specifically, it can be the downlink reference signal with the largest or smallest index value among the L downlink reference signals, or, The downlink reference signal associated with the earliest or latest PRACH sent among the Y PRACHs.
  • the first reference signal may be a first downlink reference signal
  • the first downlink reference signal is a downlink reference signal configured by a network side device.
  • the downlink reference signal configured by the network side device can be transmitted using a wide beam.
  • the terminal can perform the first downlink reception for the wide beam. , can achieve relatively good performance and receive the RAR-related downlink channels corresponding to the PRACHs associated with the downlink reference signals of different narrow beams.
  • the first downlink reference signal is a first downlink reference signal corresponding to the L downlink reference signals among the M first downlink reference signals configured by the network side device, and the M is a positive integer.
  • the network side device may use configuration information to indicate one or more downlink reference signals that can be used as the first reference signals for each R downlink reference signals. When the RAR windows corresponding to the PRACHs associated with the R downlink reference signals overlap, Then use the indicated downlink reference signal or one of the multiple downlink reference signals as the first reference signal.
  • the terminal may send multiple independent PRACHs on the same carrier or the same serving cell, or on different carriers or different serving cells.
  • the first reference signal may be a downlink reference signal on a first carrier, and the first reference signal may be a downlink reference signal on a first carrier.
  • One carrier is a carrier configured by network side equipment or a predefined carrier among the carriers where the Y PRACHs are sent.
  • the first carrier may be a carrier of a supplementary uplink (SUL) or a normal uplink (Normal). Uplink, NUL) carrier.
  • the Y PRACHs sent by the terminal may be on SUL carriers or NUL carriers.
  • the first carrier is predefined or configured by
  • the first reference signal is a predefined or downlink reference signal on a SUL carrier or a NUL carrier indicated by the network side device.
  • the first reference signal may be a downlink reference signal on a first serving cell, and the first serving cell is a serving cell for carrier aggregation where the Y PRACHs are transmitted.
  • the terminal may have K serving cells, where K is a positive integer, and each serving cell may correspond to a different uplink carrier.
  • the first serving cell is a serving cell determined based on at least one of the following when the network side device configures K serving cells for carrier aggregation:
  • the cell with the lowest or highest cell index, that is, the first reference signal may be the downlink reference signal on the serving cell with the lowest or highest cell index among the K serving cells;
  • the activated cell that is, the first reference signal may be a downlink reference signal on an activated serving cell among the K serving cells.
  • the first reference signal may be a cell among the K serving cells. Identifies the downlink reference signal on the lowest or highest activated serving cell;
  • a non-dormant (non-dormant) cell that is, the first reference signal may be a downlink reference signal on a non-dormant serving cell among the K serving cells.
  • the first reference signal may be a The downlink reference signal on the non-dormant serving cell with the lowest or highest cell identity among the K serving cells; the dormant cell can also be considered as an activated serving cell, but the terminal performs limited transmission or Receive, or not send or receive.
  • Primary cell that is, the first reference signal may be a downlink reference signal on PCell among the K serving cells;
  • the first reference signal may be the downlink reference signal on the PSCell in the K serving cells;
  • the cell with the lowest or highest frequency that is, the first reference signal may be a downlink reference signal on the serving cell with the lowest or highest frequency among the K serving cells.
  • the first reference signal may be the The downlink reference signal on the serving cell with the lowest or highest frequency among the active serving cells or non-dormant serving cells among the K serving cells.
  • the first reference signal may be a second downlink reference signal
  • the second downlink reference signal may be a downlink reference signal determined by the terminal.
  • the downlink reference signal on the first carrier or the downlink reference signal on the first serving cell in the above embodiments may be the downlink reference signal associated with the PRACH sent on the first carrier or the first serving cell, or It is the downlink reference signal on the first carrier or the first serving cell indicated by the network side device.
  • the terminal can use quasi-co-location parameters corresponding to the same downlink reference signal on multiple carriers or serving cells to receive RAR-related downlink channels.
  • the terminal uses the quasi-co-location parameter corresponding to the first reference signal to perform first downlink reception at the first listening opportunity.
  • the terminal assumes that the antenna port of the demodulation reference signal (Demodulation Reference Signal, DMRS) of the downlink channel received during the first listening opportunity and the first reference signal are quasi-co-located.
  • DMRS Demodulation Reference Signal
  • the first downlink reception is used to receive at least one of the following downlink channels:
  • the first physical downlink control channel PDCCH the first PDCCH is the PDCCH used for scheduling the RAR, the first PDCCH may also use a Random Access Radio Network Temporary Identifier (RA-RNTI) Scrambled PDCCH;
  • RA-RNTI Random Access Radio Network Temporary Identifier
  • the first physical downlink shared channel PDSCH is the PDSCH used to transmit the RAR;
  • the second physical downlink control channel PDCCH is a PDCCH scrambled using a temporary cell radio network temporary identifier TC-RNTI.
  • step S230 includes the terminal using the RA-RNTI corresponding to the Y PRACHs to monitor the PDCCH used for scheduling RAR.
  • the terminal when the terminal receives the first PDCCH, the terminal determines that the second reference signal corresponding to the quasi-colocation parameter used for third downlink reception may be the first reference signal. , wherein the third downlink reception is used to receive at least one downlink channel of the first PDSCH, the second PDCCH and the second PDSCH, and the second PDSCH is the PDSCH scheduled by the second PDCCH.
  • the terminal uses the same quasi-colocation parameter as when receiving the first PDCCH or the same quasi-colocation parameter corresponding to the first reference signal.
  • the terminal when receiving the first PDCCH, the terminal may determine the RA-RNTI corresponding to the first PDCCH, that is, After detecting the first PDCCH using the RA-RNTI, determine the PRACH corresponding to the first PDCCH. At this time, the terminal determines that the second reference signal corresponding to the quasi-co-location parameter used for third downlink reception may be the downlink reference associated with the RO corresponding to the RA-RNTI corresponding to the detected first PDCCH. Signal.
  • the terminal may determine the corresponding PRACH according to the RA-RNTI corresponding to the first PDCCH, and use the accuracy corresponding to the downlink reference signal associated with the corresponding PRACH.
  • the co-location parameter receives the first PDSCH.
  • the terminal may perform the third downlink reception at the second listening opportunity according to the quasi-co-location parameter of the third reference signal.
  • the second listening opportunity may be the first listening opportunity, or may be a downlink receiving opportunity corresponding to one PRACH among the Y PRACHs.
  • the network side device may configure information to the terminal in advance so that the terminal can send Start the X independent PRACH processes and execute the method described in the embodiment of this application.
  • the terminal sends X physical random access channels PRACH and obtains the first monitoring opportunity; wherein the first monitoring opportunity is located at Y PRACH among the X PRACHs.
  • the first downlink reception is performed at the right time, so that the reference signal corresponding to the quasi-co-location parameter for downlink reception is clarified in the overlapping part of the RAR window, so that the terminal can simply and clearly determine the receiving beam, and use an overall more appropriate
  • the receiving beam receives RAR-related downlink channels sent by the network side device in different beams.
  • the second downlink reception is a downlink reception unrelated to the PRACH process.
  • the second downlink channel is a downlink channel other than the downlink channel of the first downlink reception, and may specifically be a PDCCH or a PDSCH.
  • the other downlink channels may be the PDCCH monitored in the user-specific search space set (USS set), or the PDSCH scheduled by the PDCCH, or the reception of SSB or CSI-RS.
  • USS set user-specific search space set
  • PDSCH scheduled by the PDCCH
  • the first reference signal is a reference signal corresponding to the quasi-co-location parameter used in the second downlink reception.
  • the first reference signal is a reference signal corresponding to the quasi-co-location parameter used in the second downlink reception; wherein the second downlink reception is a reference signal used to receive the second downlink channel.
  • the second downlink channel is a downlink channel other than the downlink channel for the first downlink reception.
  • the embodiments of the present application determine the first reference by combining the reference signal corresponding to the quasi-colocation parameter used in the second downlink reception when the first downlink reception and the second downlink reception overlap. signal, which can ensure the performance of the second downlink reception and minimize the impact of the first downlink reception on the second downlink reception.
  • step S230 the method further includes:
  • the terminal uses the quasi-co-location parameter corresponding to the third reference signal to send message 3 (Msg3) according to the instruction of the first downlink reception, that is, the transmission beam of Msg3 can be determined according to the first downlink reception, and the transmission beam is determined.
  • the spatial transmission filter of Msg3 corresponds to the beam used to receive the downlink reference signal, so the same spatial filter is used for transmission.
  • the third reference signal may be the same as the first reference signal in the above embodiment.
  • the third reference signal may be the first reference signal corresponding to the quasi-colocation parameter used for the first downlink reception.
  • Reference signal specifically one of the following:
  • One of the L downlink reference signals associated with the Y PRACHs is less than or equal to a positive integer of Y, for example, the downlink reference signal with the largest or smallest index value among the L downlink reference signals or, the Y PRACH The earliest or latest PRACH-associated downlink reference signal sent;
  • a first downlink reference signal, the first downlink reference signal is a downlink reference signal configured by the network side device;
  • a second downlink reference signal, the second downlink reference signal is a downlink reference signal determined by the terminal.
  • the third reference signal may be determined according to the received first PDCCH, and the third reference signal is one of the following:
  • the beam used by the terminal when receiving the first PDCCH may be different from the beam used by the network side device to actually send the first PDCCH, and the terminal can determine the PRACH that the first PDCCH actually responds to based on the RA-RNTI, thereby Determine the beam used by the first PDCCH, that is, the downlink reference signal that is quasi-co-located with the first PDCCH.
  • the terminal when transmitting Msg3, the terminal may use a transmit beam corresponding to a quasi-colocated downlink reference signal corresponding to the first PDCCH to transmit, that is, use a downlink quasi-colocated with the first PDCCH to transmit.
  • the spatial transmission filter corresponding to the reference signal is transmitted.
  • the downlink reference signal associated with the received preamble indicated by the first PDSCH Since different ROs may correspond to the same RA-RNTI, and the RO may be associated with two different downlink reference signals at the same time, the preamble IDs associated with different downlink reference signals are different. That is, the PRACHs sent on the two ROs may be associated with different downlink reference signals, but the first PDCCH is the same RA-RNTI. At this time, the terminal cannot determine the downlink reference signal that is quasi-co-located with the first PDCCH based only on the RA-RNTI. The terminal may further determine the downlink reference signal associated with the PRACH based on the PRACH preamble ID information in the first PDSCH. Therefore, when Msg3 is transmitted, the transmission beam corresponding to the quasi-co-location parameter of the downlink reference signal is used for transmission, that is, the spatial transmission filter corresponding to the downlink reference signal is used for transmission.
  • the method further includes: receiving message 4 (Msg4) using the quasi-co-location parameter corresponding to the third reference signal.
  • the terminal uses the quasi-co-location parameter corresponding to the third reference signal to send Msg3 according to the first downlink received instruction, so that the terminal can use Correct beam.
  • the method further includes:
  • the value of X and the reference signal group corresponding to each PRACH are determined according to the length of the listening window, so that there is no overlap in the listening windows corresponding to the X PRACHs.
  • SSB is used as an example as a reference signal for illustration.
  • the opening time point of the RAR window is the starting boundary of the time slot where the first resource control set (Control resource set, CORESET) CORESET #0 is located after sending PRACH, and the length of each SSB and each RO same.
  • the first resource control set Control resource set, CORESET
  • ROs will be configured on the uplink time slot, and there is an association between ROs and the actual sent SSB.
  • One RO may be associated with multiple SSBs, or multiple SSBs may be associated with one RO.
  • the terminal After receiving SSB and obtaining cell synchronization and system information, the terminal can determine the number of SSBs and RO in the cell. configuration and determine the SSB grouping. Specifically include:
  • Group ROs with the same RAR window into one group as shown in Figure 4, group RO#0 ⁇ RO#3 in the same uplink time slot into one group.
  • RO According to the association between RO and SSB, determine the SSB group associated with each RO group. As shown in Figure 4, the previous RO group is associated with SSB#0 ⁇ SSB#3, and the latter RO group is associated with SSB#4 ⁇ SSB#7.
  • the terminal can select an SSB within the SSB group and send PRACH on the corresponding RO.
  • threshold selection can be based on correlation. Taking the signal quality of an SSB as an example, select an SSB from an SSB group whose signal quality exceeds a predefined or preconfigured threshold. If the signal quality of multiple SSBs exceeds the threshold, one of the SSBs can be selected according to the terminal implementation, or the SSB with the best signal quality can be selected; if the signal quality of all SSBs in the SSB group is lower than the predefined or Preconfigured threshold, you can randomly select an SSB, or not send PRACH.
  • the signal quality may be Synchronization Signal based Reference Signal Received Power (SS-RSRP).
  • the SSB packet corresponding to the RO cannot be used to send PRACH.
  • the terminal can select multiple ROs within an SSB to RO association period (association period) or association pattern period (association pattern period) according to the above rules, and ensure that the RAR windows corresponding to each RO do not overlap with each other.
  • the terminal selects an SSB from the SSB group to execute the corresponding PRACH process based on the signal quality of each SSB. It can determine the subsequent N SSBs based on the first selected SSB and RAR window, while ensuring that the RAR windows do not overlap each other.
  • the number of N is not greater than the association period/RAR window length or is not greater than the association mode period/RAR window length.
  • the number of PRACHs to be sent and the RO corresponding to each PRACH are determined according to the length of the listening window, so that there is no overlap in the listening windows corresponding to each PRACH, or There is no first listening opportunity for performing the first downlink reception.
  • the terminal can perform downlink reception in the listening window corresponding to each PRACH according to the quasi-co-location parameters corresponding to the reference signals associated with each PRACH. There is no need to use the above-mentioned embodiments.
  • Method determine the first reference signal corresponding to the first listening opportunity and use it for first downlink reception.
  • the terminal cannot meet the requirements of the embodiment of the present application when initiating multiple independent PRACHs and there is overlap in the listening windows corresponding to the X PRACHs, the first listening opportunity is obtained and the first listening window corresponding to the first listening opportunity is determined reference signal, and all the above method embodiments can be executed.
  • the execution subject may be a device for determining quasi-co-location parameters.
  • the device for determining the quasi-co-location parameter is used as an example to illustrate the device for determining the quasi-co-location parameter provided by the embodiment of the present application.
  • the device for determining quasi-co-location parameters includes: a sending module 501, an execution module 502, and a receiving module.
  • the sending module 501 is used to send X physical random access channels PRACH and obtain the first listening opportunity; Wherein, the first listening opportunity is located at the overlapping time of the listening windows corresponding to Y PRACHs among the X PRACHs, and the X and Y are positive integers greater than 1;
  • the execution module 502 is used to determine the The first reference signal corresponding to the first listening opportunity;
  • the receiving module 503 is configured to use the quasi-co-location parameter corresponding to the first reference signal to perform the first downlink reception at the first listening opportunity.
  • the first downlink reception is used to receive at least one of the following downlink channels:
  • the first physical downlink control channel PDCCH is the PDCCH used for scheduling the RAR;
  • the first physical downlink shared channel PDSCH is the PDSCH used to transmit the RAR;
  • the second physical downlink control channel PDCCH is a PDCCH scrambled using a temporary cell radio network temporary identifier TC-RNTI.
  • the first reference signal is one of the following:
  • One of the L downlink reference signals associated with the Y PRACHs where the L is a positive integer less than or equal to Y;
  • a first downlink reference signal, the first downlink reference signal is a downlink reference signal configured by the network side device;
  • the downlink reference signal on the first carrier which is the carrier configured by the network side device among the carriers where the Y PRACHs are sent;
  • a downlink reference signal on the first serving cell which is the serving cell where the carrier aggregation of the Y PRACHs is transmitted;
  • a second downlink reference signal, the second downlink reference signal is a downlink reference signal determined by the device for determining quasi-co-located parameters.
  • one of the L downlink reference signals associated with the Y PRACHs is one of the following:
  • the downlink reference signal associated with the earliest or latest PRACH sent among the Y PRACHs is not limited.
  • the first downlink reference signal is a first downlink reference signal corresponding to the L downlink reference signals among the M first downlink reference signals configured by the network side device, and the M is a positive integer.
  • the first carrier is the carrier of the SUL indicated by the network side device when the network side device is configured with the supplementary uplink SUL or the carrier of the regular uplink NUL.
  • the first serving cell is a serving cell determined based on at least one of the following when the network side device configures K serving cells for carrier aggregation:
  • the K is a positive integer.
  • the first reference signal is one of the following:
  • Synchronization information block SSB Synchronization information block
  • Channel state information reference signal CSI-RS Channel state information reference signal
  • the embodiments of the present application obtain the first monitoring opportunity by sending X physical random access channels PRACH; wherein the first monitoring opportunity is located at Y PRACHs among the X PRACHs.
  • the first reference signal is a reference signal corresponding to the quasi-co-location parameter used in the second downlink reception.
  • the second downlink reception is a downlink reception used to receive a second downlink channel.
  • the first downlink reception and the second downlink reception overlap, and the reference signal corresponding to the quasi-colocation parameter used in the second downlink reception is one of the L downlink reference signals associated with the Y PRACHs.
  • the first reference signal is a reference signal corresponding to the quasi-colocation parameter used in the second downlink reception; wherein the second downlink reception is a downlink reception used to receive a second downlink channel, so The second downlink channel is a downlink channel other than the first downlink received downlink channel.
  • the embodiments of the present application determine the first reference by combining the reference signal corresponding to the quasi-colocation parameter used in the second downlink reception when the first downlink reception and the second downlink reception overlap. signal, which can ensure the performance of the second downlink reception and minimize the impact of the first downlink reception on the second downlink reception.
  • the receiving module 503 is configured to use the random access wireless network temporary identity RA-RNTI corresponding to the Y PRACHs to monitor the PDCCH used for scheduling RAR.
  • the execution module 502 is also configured to determine a second reference signal corresponding to the quasi-co-location parameter used in third downlink reception;
  • the receiving module 503 is also configured to perform the third downlink reception at the second listening opportunity according to the quasi-co-location parameter of the second reference signal;
  • the third downlink reception is used to receive at least one of the following downlink channels:
  • the second PDSCH being the PDSCH scheduled by the second PDCCH
  • the second reference signal is one of the following:
  • a downlink reference signal associated with a random reception channel opportunity RO corresponding to the RA-RNTI corresponding to the received first PDCCH is received.
  • the second monitoring opportunity is the downlink reception time corresponding to one PRACH among the Y PRACHs. machine.
  • the sending module 501 is further configured to send message 3Msg3 using the quasi-co-location parameter corresponding to a third reference signal according to the first downlink received indication, and the third reference signal is one of the following:
  • the downlink reference signal associated with the received preamble indicated by the first PDSCH
  • One of the L downlink reference signals associated with the Y PRACHs, and the L is less than or equal to a positive integer of Y;
  • a first downlink reference signal, the first downlink reference signal is a downlink reference signal configured by the network side device;
  • the second downlink reference signal being a downlink reference signal determined by the terminal
  • a downlink reference signal associated with a random reception channel opportunity RO corresponding to the RA-RNTI corresponding to the received first PDCCH is received.
  • the embodiments of the present application use the quasi-colocation parameter corresponding to the third reference signal to send Msg3 according to the first downlink reception instruction, so that the correct beam can be used when sending Msg3.
  • the device for determining quasi-co-location parameters in the embodiment of the present application may be an electronic device, such as an electronic device with an operating system, or may be a component in the electronic device, such as an integrated circuit or chip.
  • the electronic device may be a terminal or other devices other than the terminal.
  • terminals may include but are not limited to the types of terminals 11 listed above, and other devices may be servers, network attached storage (Network Attached Storage, NAS), etc., which are not specifically limited in the embodiment of this application.
  • the device for determining quasi-co-location parameters provided by the embodiments of the present application can implement each process implemented by the method embodiments of Figures 2 to 4, and achieve the same technical effect. To avoid duplication, details will not be described here.
  • this embodiment of the present application also provides a communication device 600, which includes a processor 601 and a memory 602.
  • the memory 602 stores programs or instructions that can be run on the processor 601, such as , when the communication device 600 is a terminal, when the program or instruction is executed by the processor 601, each step of the above method embodiment for determining quasi-co-location parameters is implemented, and the same technical effect can be achieved.
  • the communication device 600 is a network-side device, when the program or instruction is executed by the processor 601, each step of the above-mentioned method embodiment for determining quasi-co-location parameters is implemented, and the same technical effect can be achieved. To avoid duplication, it will not be repeated here. Repeat.
  • An embodiment of the present application also provides a terminal, including a processor and a communication interface.
  • the processor is used to determine the first reference signal corresponding to the first listening opportunity.
  • the communication interface is used to send X physical random access channels PRACH, and Obtain a first listening opportunity; use a quasi-co-location parameter corresponding to the first reference signal to perform first downlink reception at the first listening opportunity.
  • This terminal embodiment corresponds to the above-mentioned terminal-side method embodiment.
  • Each implementation process and implementation manner of the above-mentioned method embodiment can be applied to this terminal embodiment, and can achieve the same technical effect.
  • FIG. 7 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 700 includes but is not limited to: a radio frequency unit 701, a network module 702, an audio output unit 703, an input unit 704, a sensor 705, a display unit 706, a user input unit 707, an interface unit 708, a memory 709, a processor 710, etc. At least some parts.
  • the terminal 700 may also include a power supply (such as a battery) that supplies power to various components.
  • the power supply may be logically connected to the processor 710 through a power management system, thereby managing charging, discharging, and power consumption through the power management system. Management and other functions.
  • the terminal structure shown in FIG. 7 does not constitute a limitation on the terminal.
  • the terminal may include more or fewer components than shown in the figure, or some components may be combined or arranged differently, which will not be described again here.
  • the input unit 704 may include a graphics processing unit (GPU) 7041 and a microphone 7042.
  • the GPU 7041 is used for recording data by an image capture device (such as a camera) in the video capture mode or the image capture mode.
  • the image data obtained from still pictures or videos is processed.
  • the display unit 706 may include a display panel 7061, which may be configured in the form of a liquid crystal display, an organic light emitting diode, or the like.
  • the user input unit 707 includes a touch panel 7071 and at least one of other input devices 7072 .
  • Touch panel 7071 also called touch screen.
  • the touch panel 7071 may include two parts: a touch detection device and a touch controller.
  • Other input devices 7072 may include but are not limited to physical keyboards, function keys (such as volume control keys, switch keys, etc.), trackballs, mice, and joysticks, which will not be described again here.
  • the radio frequency unit 701 after receiving downlink data from the network side device, can transmit it to the processor 710 for processing; in addition, the radio frequency unit 701 can send uplink data to the network side device.
  • the radio frequency unit 701 includes, but is not limited to, an antenna, amplifier, transceiver, coupler, low noise amplifier, duplexer, etc.
  • Memory 709 may be used to store software programs or instructions as well as various data.
  • the memory 709 may mainly include a first storage area for storing programs or instructions and a second storage area for storing data, wherein the first storage area may store an operating system, an application program or instructions required for at least one function (such as a sound playback function, Image playback function, etc.) etc.
  • memory 709 may include volatile memory or non-volatile memory, or memory 709 may include both volatile and non-volatile memory.
  • non-volatile memory can be read-only memory (Read-Only Memory, ROM), programmable read-only memory (Programmable ROM, PROM), erasable programmable read-only memory (Erasable PROM, EPROM), electrically removable memory. Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • Volatile memory can be random access memory (Random Access Memory, RAM), static random access memory (Static RAM, SRAM), dynamic random access memory (Dynamic RAM, DRAM), synchronous dynamic random access memory (Synchronous DRAM, SDRAM), double data rate synchronous dynamic random access memory (Double Data Rate SDRAM, DDRSDRAM), enhanced synchronous dynamic random access memory (Enhanced SDRAM, ESDRAM), synchronous link dynamic random access memory (Synch link DRAM) , SLDRAM) and direct memory bus random access memory (Direct Rambus RAM, DRRAM).
  • RAM Random Access Memory
  • SRAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • SDRAM double data rate synchronous dynamic random access memory
  • Double Data Rate SDRAM Double Data Rate SDRAM
  • DDRSDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM, ESDRAM enhanced synchronous dynamic random access memory
  • Synch link DRAM synchronous link dynamic random access memory
  • SLDRAM direct memory bus
  • the processor 710 may include one or more processing units; optionally, the processor 710 integrates an application processor and a modem processor, where the application processor mainly handles operations related to the operating system, user interface, application programs, etc., Modem processors mainly process wireless communication signals, such as baseband processors. It can be understood that the above-mentioned modem processor may not be integrated into the processor 710.
  • the radio frequency unit 701 is used to send X physical random access channels PRACH and obtain the first monitoring opportunity; wherein the first monitoring opportunity is located in the monitoring window corresponding to Y PRACH among the X PRACHs.
  • the X and Y are positive integers greater than 1;
  • Processor 710 configured to determine the first reference signal corresponding to the first listening opportunity
  • the radio frequency unit 701 is configured to use the quasi-co-location parameter corresponding to the first reference signal to perform first downlink reception at the first listening opportunity.
  • the first downlink reception is used to receive at least one of the following downlink channels:
  • the first physical downlink control channel PDCCH is the PDCCH used for scheduling the RAR;
  • the first physical downlink shared channel PDSCH is the PDSCH used to transmit the RAR;
  • the second physical downlink control channel PDCCH is a PDCCH scrambled using a temporary cell radio network temporary identifier TC-RNTI.
  • the first reference signal is one of the following:
  • One of the L downlink reference signals associated with the Y PRACHs where the L is a positive integer less than or equal to Y;
  • a first downlink reference signal, the first downlink reference signal is a downlink reference signal configured by the network side device;
  • the downlink reference signal on the first carrier which is the carrier configured by the network side device among the carriers where the Y PRACHs are sent;
  • a downlink reference signal on the first serving cell which is the serving cell where the carrier aggregation of the Y PRACHs is transmitted;
  • a second downlink reference signal, the second downlink reference signal is a downlink reference signal determined by the device for determining quasi-co-located parameters.
  • one of the L downlink reference signals associated with the Y PRACHs is one of the following:
  • the downlink reference signal associated with the earliest or latest PRACH sent among the Y PRACHs is not limited.
  • the first downlink reference signal is a first downlink reference signal corresponding to the L downlink reference signals among the M first downlink reference signals configured by the network side device, and the M is a positive integer.
  • the first carrier is the carrier of the SUL indicated by the network side device when the network side device is configured with the supplementary uplink SUL or the carrier of the regular uplink NUL.
  • the first serving cell is a serving cell determined based on at least one of the following when the network side device configures K serving cells for carrier aggregation:
  • the K is a positive integer.
  • the first reference signal is one of the following:
  • Synchronization information block SSB Synchronization information block
  • Channel state information reference signal CSI-RS Channel state information reference signal
  • the first reference signal is a reference signal corresponding to the quasi-colocation parameter used in the second downlink reception; wherein, the The second downlink reception is downlink reception for receiving the second downlink channel.
  • the first downlink reception and the second downlink reception overlap, and the reference signal corresponding to the quasi-colocation parameter used in the second downlink reception is one of the L downlink reference signals associated with the Y PRACHs.
  • the first reference signal is a reference signal corresponding to the quasi-colocation parameter used in the second downlink reception; wherein the second downlink reception is a downlink reception used to receive a second downlink channel, so The second downlink channel is a downlink channel other than the first downlink received downlink channel.
  • the radio frequency unit 701 is configured to use the random access wireless network temporary identity RA-RNTI corresponding to the Y PRACHs to monitor the PDCCH used for scheduling RAR.
  • the processor 710 is further configured to determine a second reference signal corresponding to the quasi-co-location parameter used in third downlink reception;
  • the radio frequency unit 701 is also configured to perform the third downlink reception at the second listening opportunity according to the quasi-co-location parameter of the second reference signal;
  • the third downlink reception is used to receive at least one of the following downlink channels:
  • the second PDSCH being the PDSCH scheduled by the second PDCCH
  • the second reference signal is one of the following:
  • a downlink reference signal associated with a random reception channel opportunity RO corresponding to the RA-RNTI corresponding to the received first PDCCH is received.
  • the second monitoring opportunity is a downlink reception opportunity corresponding to one PRACH among the Y PRACHs.
  • the radio frequency unit 701 is further configured to send the message 3Msg3 using the quasi-co-location parameter corresponding to a third reference signal according to the first downlink received instruction, and the third reference signal is one of the following:
  • the downlink reference signal associated with the received preamble indicated by the first PDSCH
  • One of the L downlink reference signals associated with the Y PRACHs, and the L is less than or equal to a positive integer of Y;
  • a first downlink reference signal, the first downlink reference signal is a downlink reference signal configured by the network side device;
  • the second downlink reference signal being a downlink reference signal determined by the terminal
  • the overlapping portion in the RAR window of the embodiment of the present application clarifies the reference signal corresponding to the quasi-co-location parameter for downlink reception, allowing the terminal to simply and clearly determine the receiving beam, and receive the network side with an overall more appropriate receiving beam.
  • Embodiments of the present application also provide a readable storage medium, with a program or instructions stored on the readable storage medium.
  • a program or instructions stored on the readable storage medium.
  • each process of the above quasi-co-located parameter determination method embodiment is implemented. And can achieve the same technical effect. To avoid repetition, they will not be described again here.
  • the processor is the processor in the terminal described in the above embodiment.
  • the readable storage medium includes computer readable storage media, such as computer read-only memory ROM, random access memory RAM, magnetic disk or optical disk, etc.
  • An embodiment of the present application further provides a chip.
  • the chip includes a processor and a communication interface.
  • the communication interface is coupled to the processor.
  • the processor is used to run programs or instructions to realize the determination of the above quasi-co-location parameters.
  • chips mentioned in the embodiments of this application may also be called system-on-chip, system-on-a-chip, system-on-chip or system-on-chip, etc.
  • Embodiments of the present application further provide a computer program/program product.
  • the computer program/program product is stored in a storage medium.
  • the computer program/program product is executed by at least one processor to implement the above-mentioned quasi-co-location parameter. It is determined that each process of the method embodiment can achieve the same technical effect, so to avoid repetition, it will not be described again here.
  • Embodiments of the present application also provide a system for determining quasi-co-location parameters, including: a terminal and a network-side device.
  • the terminal can be used to perform the steps of the method for determining quasi-co-location parameters as described above.
  • the network-side device It may be used to perform the steps related to the network side device in the method for determining the quasi-co-location parameter as described above.
  • the methods of the above embodiments can be implemented by means of software plus the necessary general hardware platform. Of course, it can also be implemented by hardware, but in many cases the former is better. implementation.
  • the technical solution of the present application can be embodied in the form of a computer software product that is essentially or contributes to the existing technology.
  • the computer software product is stored in a storage medium (such as ROM/RAM, disk , CD), including several instructions to make a terminal (can be a mobile phone, computing machine, server, air conditioner, or network device, etc.) to perform the methods described in various embodiments of this application.

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

Abstract

La présente demande concerne le domaine des communications. Sont divulgués un procédé et un appareil pour déterminer un paramètre de quasi-colocalisation, et un terminal. Le procédé de détermination d'un paramètre de quasi-colocalisation dans les modes de réalisation de la présente demande comprend les étapes suivantes : un terminal envoie X canaux d'accès aléatoire physique (PRACH), et acquiert une première occasion de surveillance, la première occasion de surveillance étant située dans le temps de chevauchement de fenêtres de surveillance correspondant à Y PRACH parmi les X PRACH, X et Y étant des entiers positifs supérieurs à 1; le terminal détermine un premier signal de référence correspondant à la première occasion de surveillance ; et le terminal effectue une première réception de liaison descendante à la première occasion de surveillance à l'aide d'un paramètre de quasi-colocalisation correspondant au premier signal de référence.
PCT/CN2023/115639 2022-09-05 2023-08-30 Procédé et appareil de détermination de paramètre de quasi-co-localisation, et terminal WO2024051539A1 (fr)

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CN202211079943.9A CN117715228A (zh) 2022-09-05 2022-09-05 准共址参数的确定方法、装置及终端

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021087978A1 (fr) * 2019-11-08 2021-05-14 Lenovo (Beijing) Limited Procédé et appareil pour répétitions prach
CN113365358A (zh) * 2019-04-26 2021-09-07 维沃移动通信有限公司 一种信道监听方法、终端及网络设备
WO2021207925A1 (fr) * 2020-04-14 2021-10-21 Oppo广东移动通信有限公司 Procédé et appareil de détermination de ressources, et dispositif et support d'enregistrement
CN113939036A (zh) * 2020-06-29 2022-01-14 维沃移动通信有限公司 信道监听、传输方法、终端及网络侧设备
US20220191940A1 (en) * 2020-12-16 2022-06-16 Samsung Electronics Co., Ltd. Method and apparatus for multiple concurrent random access procedures

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113365358A (zh) * 2019-04-26 2021-09-07 维沃移动通信有限公司 一种信道监听方法、终端及网络设备
WO2021087978A1 (fr) * 2019-11-08 2021-05-14 Lenovo (Beijing) Limited Procédé et appareil pour répétitions prach
WO2021207925A1 (fr) * 2020-04-14 2021-10-21 Oppo广东移动通信有限公司 Procédé et appareil de détermination de ressources, et dispositif et support d'enregistrement
CN113939036A (zh) * 2020-06-29 2022-01-14 维沃移动通信有限公司 信道监听、传输方法、终端及网络侧设备
US20220191940A1 (en) * 2020-12-16 2022-06-16 Samsung Electronics Co., Ltd. Method and apparatus for multiple concurrent random access procedures

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