WO2021218907A1 - Procédé d'acquisition d'informations, procédé de détermination d'informations, appareil et dispositif associé - Google Patents

Procédé d'acquisition d'informations, procédé de détermination d'informations, appareil et dispositif associé Download PDF

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Publication number
WO2021218907A1
WO2021218907A1 PCT/CN2021/089869 CN2021089869W WO2021218907A1 WO 2021218907 A1 WO2021218907 A1 WO 2021218907A1 CN 2021089869 W CN2021089869 W CN 2021089869W WO 2021218907 A1 WO2021218907 A1 WO 2021218907A1
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WIPO (PCT)
Prior art keywords
harq
ack
related information
pdsch
multicast
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PCT/CN2021/089869
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English (en)
Chinese (zh)
Inventor
李娜
潘学明
沈晓冬
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维沃移动通信有限公司
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Publication of WO2021218907A1 publication Critical patent/WO2021218907A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1861—Physical mapping arrangements
    • 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
    • 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
    • H04L5/0055—Physical resource allocation for ACK/NACK

Definitions

  • This application belongs to the field of communication technology, and in particular relates to an information acquisition method, information determination method, device, and related equipment.
  • Some communication systems support multicast services, such as Multimedia Broadcast Multicast Service (MBMS).
  • MBMS Multimedia Broadcast Multicast Service
  • the multicast service is mainly scheduled through multicast Downlink Control Information (DCI), such as the physical downlink shared channel (PDSCH) scheduled by the multicast DCI.
  • DCI Downlink Control Information
  • PDSCH physical downlink shared channel
  • the network side does not send information related to the hybrid automatic repeat request (Hybrid Automatic Repeat request Acknowledgement, HARQ-ACK) of the multicast service to the terminal, so that the terminal cannot obtain the HARQ-ACK related information.
  • HARQ-ACK Hybrid Automatic Repeat request Acknowledgement
  • the embodiments of the present application provide an information acquisition method, information determination method, device, and related equipment, which can solve the problem that the terminal cannot obtain HARQ-ACK related information.
  • an embodiment of the present application provides an information acquisition method, which is applied to a terminal, and includes:
  • the HARQ-ACK related information is used for HARQ-ACK feedback of the multicast PDSCH of the terminal, wherein the HARQ-ACK related information includes at least one of the following:
  • the first HARQ-ACK related information included in the unicast DCI detected by the terminal
  • the second HARQ-ACK related information obtained in advance or implicitly determined by the terminal.
  • the embodiments of the present application provide an information determination method, which is applied to network equipment, including:
  • the HARQ-ACK related information is used for HARQ-ACK feedback of the terminal's multicast PDSCH, wherein the HARQ-ACK related information includes at least one of the following:
  • the first HARQ-ACK related information included in the unicast DCI sent to the terminal
  • the second HARQ-ACK related information obtained in advance or implicitly determined by the network device.
  • an information acquisition device including:
  • the obtaining module is configured to obtain HARQ-ACK related information, the HARQ-ACK related information is used for HARQ-ACK feedback of the multicast PDSCH of the terminal, wherein the HARQ-ACK related information includes at least one of the following:
  • the first HARQ-ACK related information included in the unicast DCI detected by the terminal
  • the second HARQ-ACK related information obtained in advance or implicitly determined by the terminal.
  • an information determination device including:
  • the determining module is configured to determine HARQ-ACK related information, the HARQ-ACK related information is used for HARQ-ACK feedback of the multicast PDSCH of the terminal, wherein the HARQ-ACK related information includes at least one of the following:
  • the first HARQ-ACK related information included in the unicast DCI sent to the terminal
  • the second HARQ-ACK related information obtained in advance or implicitly determined by the network device.
  • an embodiment of the present application provides a terminal, including a memory, a processor, and a program or instruction stored on the memory and capable of running on the processor, and the program or instruction is executed by the processor.
  • the steps in the information acquisition method provided in the embodiments of the present application are implemented during execution.
  • an embodiment of the present application provides a network device, including: a memory, a processor, and a program or instruction stored on the memory and running on the processor, and the program or instruction is processed by the processor.
  • the steps in the information determination method provided in the embodiments of the present application are implemented when the device is executed.
  • an embodiment of the present application provides a readable storage medium with a program or instruction stored on the readable storage medium.
  • the program or instruction is executed by a processor, the information acquisition method provided by the embodiment of the present application is implemented
  • the program or instruction is executed by a processor, the steps in the information determination method provided in the embodiments of the present application are implemented.
  • an embodiment of the present application provides a chip.
  • the chip includes a processor and a communication interface, the communication interface is coupled to the processor, and the processor is used to run a program or instruction to implement the embodiment of the present application.
  • HARQ-ACK related information is obtained, and the HARQ-ACK related information is used for HARQ-ACK feedback of the multicast PDSCH of the terminal, where the HARQ-ACK related information includes at least one of the following: The first HARQ-ACK related information included in the unicast DCI detected by the terminal; the second HARQ-ACK related information obtained in advance or implicitly determined by the terminal.
  • the terminal can obtain the aforementioned HARQ-ACK related information. And it can also enable the terminal to support the HARQ-ACK feedback of the multicast service, thereby improving the reliability of the multicast service transmission.
  • FIG. 1 is a structural diagram of a network system applicable to an embodiment of the present application
  • FIG. 2 is a flowchart of an information acquisition method provided by an embodiment of the present application.
  • FIG. 3 is a flowchart of an information determination method provided by an embodiment of the present application.
  • FIG. 4 is a schematic diagram of DCI scheduling provided by an embodiment of the present application.
  • FIG. 5 is a schematic diagram of another DCI scheduling provided by an embodiment of the present application.
  • FIG. 6 is a schematic diagram of another DCI scheduling provided by an embodiment of the present application.
  • FIG. 7 is a structural diagram of an information acquisition device provided by an embodiment of the present application.
  • FIG. 8 is a structural diagram of another information acquisition device provided by an embodiment of the present application.
  • FIG. 9 is a structural diagram of an information determination device provided by an embodiment of the present application.
  • FIG. 10 is a structural diagram of an information determining device provided by an embodiment of the present application.
  • FIG. 11 is a structural diagram of a terminal provided by an embodiment of the present application.
  • Fig. 12 is a structural diagram of a network device provided by an embodiment of the present application.
  • words such as “exemplary” or “for example” are used to represent examples, illustrations, or illustrations. Any embodiment or design solution described as “exemplary” or “for example” in the embodiments of the present invention should not be construed as being more preferable or advantageous than other embodiments or design solutions. To be precise, words such as “exemplary” or “for example” are used to present related concepts in a specific manner.
  • the uplink resource determination method, indication method, terminal, and network device provided in the embodiments of the present invention can be applied to a wireless communication system.
  • the wireless communication system can be a New Radio (NR) system, or other systems, such as: Evolved Long Term Evolution (eLTE) system or Long Term Evolution (LTE) system, or subsequent evolution Communication system, etc. Further, it can be applied to the unlicensed band (Unlicensed Band) in the above-mentioned wireless communication system.
  • NR New Radio
  • eLTE Evolved Long Term Evolution
  • LTE Long Term Evolution
  • FIG. 1 is a structural diagram of a network system applicable to an embodiment of the present invention. As shown in FIG. 1, it includes a terminal 11 and a network device 12.
  • the terminal 11 may be a User Equipment (UE). ) Or other terminal side devices, such as: mobile phones, tablet computers (Tablet Personal Computer), laptop computers (Laptop Computer), personal digital assistants (personal digital assistant, PDA), mobile Internet devices (Mobile Internet Device, MID),
  • UE User Equipment
  • PDA personal digital assistant
  • mobile Internet devices Mobile Internet Device, MID
  • For terminal-side devices such as wearable devices (Wearable Devices) or robots, it should be noted that the specific type of the terminal 11 is not limited in the embodiment of the present invention.
  • the aforementioned network device 12 may be a 4G base station, or a 5G base station, or a base station of a later version, or a base station in other communication systems, or it is called Node B, Evolved Node B, or Transmission Reception Point (TRP), Or access point (Access Point, AP), or other vocabulary in the field, as long as the same technical effect is achieved, the network device is not limited to a specific technical vocabulary.
  • the aforementioned network device 12 may be a master node (Master Node, MN) or a secondary node (Secondary Node, SN). It should be noted that, in the embodiment of the present invention, only a 5G base station is taken as an example, but the specific type of network equipment is not limited.
  • FIG. 2 is a flowchart of an information acquisition method provided by an embodiment of the present application. The method is applied to a terminal, as shown in FIG. 2, and includes the following steps:
  • Step 201 Obtain HARQ-ACK related information, where the HARQ-ACK related information is used for HARQ-ACK feedback of the multicast PDSCH of the terminal, where the HARQ-ACK related information includes at least one of the following:
  • the first HARQ-ACK related information included in the unicast DCI detected by the terminal
  • the second HARQ-ACK related information obtained in advance or implicitly determined by the terminal.
  • the foregoing obtaining HARQ-ACK related information may include at least one of the following:
  • HARQ-ACK related information may refer to related information used for HARQ-ACK feedback, for example: used to determine the time domain, frequency domain, and space domain resources for feeding back HARQ-ACK, number of bits, transmission power, etc. Related Information.
  • the first HARQ-ACK related information obtained in step 201 includes at least one of the foregoing first HARQ-ACK related information and the foregoing second HARQ-ACK related information can be understood as:
  • the first HARQ-ACK related information acquired in step 201 includes the foregoing first HARQ-ACK related information
  • the first HARQ-ACK related information obtained in step 201 includes the foregoing second HARQ-ACK related information
  • the first HARQ-ACK related information obtained in step 201 includes the foregoing first HARQ-ACK related information and the foregoing second HARQ-ACK related information.
  • the above-mentioned first HARQ-ACK related information and the above-mentioned second HARQ-ACK related information may not have an intersection.
  • this is not limited, and there may also be an intersection.
  • the priority of these intersections can be predefined
  • the HARQ-ACK related information included in the predefined unicast DCI has a higher priority than the pre-acquired HARQ-ACK related information.
  • the above-mentioned pre-acquired HARQ-ACK related information may be HARQ-ACK related information pre-defined by the protocol or pre-configured by the network side to the terminal.
  • the multicast PDSCH of the aforementioned terminal may be one or more multicast PDSCHs, and the HARQ-ACK of these PDSCHs may be fed back on the same or different resources. For example: all are fed back on one resource corresponding to the above-mentioned first HARQ-ACK related information, or multiple multicast PDSCHs are fed back on multiple resources corresponding to the above-mentioned first HARQ-ACK related information, such as feedback on multiple time slots .
  • the terminal can obtain the HARQ-ACK related information, so that the terminal can support the HARQ-ACK feedback of the multicast service, thereby improving the reliability of the multicast service transmission.
  • unicast DCI may be one or more DCIs.
  • the foregoing unicast DCI includes: the first unicast DCI detected by the terminal after the multicast DCI of the multicast PDSCH is scheduled.
  • the foregoing multicast DCI may be all the DCIs of the multicast PDSCH of the terminal in step 201.
  • the multicast DCI in this embodiment refers to scheduling these multiple multicast PDSCHs. Of one or more DCIs.
  • the terminal can accurately and timely determine the first HARQ-ACK related information of the multicast PDSCH.
  • the multicast DCI of two multicast PDSCHs is before the first unicast DCI
  • the multicast DCI of the other two multicast PDSCHs is after the first unicast DCI
  • the second unicast DCI then the first two The first HARQ-ACK related information of the multicast PDSCH is the HARQ-ACK related information in the first unicast DCI
  • the first HARQ-ACK related information of the last two multicast PDSCHs is the HARQ-ACK in the second unicast DCI Related Information.
  • the above unicast DCI includes: after the multicast PDSCH (for example, at least one of the start symbol or the end symbol of the DCI is after the start symbol or the end symbol of the multicast PDSCH) The first unicast DCI detected by the terminal.
  • This method can be applied to the situation that the multicast PDSCH does not have a corresponding scheduling DCI, for example, the multicast PDSCH is transmitted in a specific time-frequency domain according to the high-level configuration (such as determining the transmission time-frequency resource of the multicast PDSCH according to SPS PDSCH or MBSFN) .
  • the foregoing first HARQ-ACK related information includes at least one of the following:
  • Downlink assignment indicator (Downlink Assignment Index, DAI), feedback timing indicator, PUCCH resource indicator (PUCCH Resource Indicator, PRI), transmit power indicator, priority indicator (priority indicator).
  • DAI Downlink Assignment Index
  • PRI PUCCH Resource Indicator
  • the above DAI may include counting DAI (counting DAI, C-DAI), and may also include total DAI (T-DAI), or may include only T-DAI.
  • the above feedback timing indicator can indicate the HARQ-ACK feedback time, for example, it can include the PDSCH-to-HARQ feedback timing indicator (PDSCH-to-HARQ_feedback timing indicator), that is, the k1 indicator, such as k1 indicating the difference between the PDSCH and the corresponding HARQ-ACK time interval.
  • PDSCH-to-HARQ_feedback timing indicator PDSCH-to-HARQ_feedback timing indicator
  • the foregoing transmit power indicator may indicate the power indicator fed back by the HARQ-ACK, for example, includes a transmit power control (transmit power control, TPC) indicator.
  • TPC transmit power control
  • the foregoing priority indication may indicate the priority of HARQ-ACK.
  • the other part of the indicator can be indicated by the DCI of the multicast PDSCH. Either pre-configured, or agreed by agreement, such as configured through the above-mentioned second HARQ-ACK related information.
  • the foregoing at least one item may be included by one or more DCIs.
  • one DCI includes the foregoing DAI
  • the other DCI includes at least one of a feedback timing indicator, a PRI, a transmit power indicator, and a priority indicator.
  • the DAI includes:
  • the first bit and/or the second bit wherein the first bit is used to indicate unicast PDSCH, and the second bit is used to indicate multicast PDSCH;
  • the third bit is used to jointly indicate unicast PDSCH and multicast PDSCH.
  • the above-mentioned indication of unicast PDSCH may be an indication of scheduling of unicast PDSCH
  • the above-mentioned indication of multicast PDSCH may be an indication of scheduling of multicast PDSCH.
  • the above-mentioned joint indication of unicast PDSCH and multicast PDSCH may be respectively indicating unicast PDSCH scheduling and multicast PDSCH in a joint indication manner, or indicating the sum of unicast PDSCH and multicast PDSCH.
  • Unicast DCI contains X bits of DAI to indicate unicast PDSCH scheduling, and DCI also contains Y bits of DAI for multicast PDSCH scheduling, or unicast DCI contains Z bits of DAI to indicate unicast PDSCH and multicast PDSCH scheduling.
  • the unicast DCI includes the DCI for scheduling the PUSCH.
  • PUSCH physical uplink shared channel
  • the at least one multicast PDSCH that the HARQ-ACK is multiplexed on the physical uplink shared channel PUSCH for transmission may be part or all of the multicast PDSCH in step 201.
  • the HARQ-ACK related information includes the HARQ-ACK related information of the DCI that schedules the PUSCH, so that the HARQ-ACK of the PDSCH can be correctly replicated. It is used for transmission on PUSCH to avoid inconsistent understanding of HARQ-ACK bits between base station and terminal, thereby improving the effectiveness and reliability of the communication system.
  • the first HARQ-ACK related information in step 201 may be included in the above-mentioned DCI for scheduling the PUSCH, or may be included after the above-mentioned DCI for scheduling the PUSCH and the multicast DCI for scheduling the multicast PDSCH.
  • the first unicast DCI detected by the terminal is included together.
  • the DCI that schedules the PUSCH includes the above-mentioned T-DAI
  • the above-mentioned first unicast DCI includes feedback timing indication, PRI, transmit power indication, and priority indication. At least one of. That is, HARQ-ACK related information included in multiple DCIs can be used for HARQ-ACK feedback to ensure correct feedback of HARQ-ACK information.
  • the HARQ-ACK of the at least one multicast PDSCH may be multiplexed for transmission, and the terminal may multiplex the HARQ-ACK of the at least one multicast PDSCH for transmission, so the foregoing implementation manner can be understood as follows:
  • the terminal multiplexes the HARQ-ACK of at least one multicast PDSCH on the PUSCH for transmission, and the unicast DCI includes the DCI for scheduling the PUSCH
  • the first HARQ in the unicast DCI detected by the terminal -ACK related information includes the DAI indication information
  • the DAI indication information may include:
  • the first bit and the second bit wherein the first bit is used to indicate unicast PDSCH, and the second bit is used to indicate multicast PDSCH;
  • the third bit is used to jointly indicate unicast PDSCH and multicast PDSCH.
  • the aforementioned unicast DCI includes the DCI for scheduling PUSCH transmission, in this way, only T-DAI may be included in the DCI, that is, an uplink grant (UL grant), and no other information may be included.
  • UL grant uplink grant
  • T-DAI in the UL grant a scenario where the terminal only has multicast PDSCH and no unicast downlink scheduling can be considered, that is, there is no first bit, only the second bit, or the third bit.
  • the DCI for scheduling the PUSCH may be a non-fallback DCI, and the DCI may include only T-DAI but not C-DAI.
  • the HARQ-ACK of the multicast PDSCH can be multiplexed on the PUSCH for transmission.
  • the multicast PDSCH of the terminal corresponds to Q different radio network temporary identifiers (RNTI):
  • the second bit includes Q bit groups, and the Q bit groups are respectively used to indicate the multicast PDSCH corresponding to the Q RNTIs;
  • Q is an integer greater than or equal to 1, or Q is an integer greater than or equal to 1, and less than or equal to a preset threshold.
  • the multicast PDSCH of the terminal above corresponds to Q different RNTIs
  • the T multicast PDSCHs of the terminal correspond to Q different RNTIs, where T is an integer greater than or equal to Q, that is, there may be multiple multicast PDSCHs.
  • T is an integer greater than or equal to Q
  • the foregoing RNTI may be a group radio network temporary identifier (g-RNTI).
  • g-RNTI group radio network temporary identifier
  • the above-mentioned second bit contains N 1 , N 2 , ..., N Q T-DAIs respectively corresponding to the multicast PDSCHs corresponding to different RNTIs.
  • the aforementioned Q may be less than or equal to a certain threshold.
  • the manner in which the DAI indicates the PDSCH is configured by higher layer signaling.
  • the above-mentioned DAI includes the first bit, or the above-mentioned DAI includes the first bit and the second bit, or the above-mentioned DAI includes the third bit, etc.
  • this is not limited, and it can be Agreement stipulated.
  • the second HARQ-ACK related information obtained by the terminal in advance includes: second HARQ-ACK related information configured by higher layer signaling, or predefined second HARQ-ACK related information;
  • the second HARQ-ACK related information implicitly determined by the terminal includes: the second HARQ-ACK related information determined according to the service type or service priority of the multicast PDSCH.
  • the foregoing second HARQ-ACK related information may include: the HARQ-ACK priority of the multicast PDSCH, such as a codebook priority index corresponding to the HARQ-ACK of the multicast PDSCH.
  • the HARQ-ACK priority of the multicast PDSCH such as a codebook priority index corresponding to the HARQ-ACK of the multicast PDSCH.
  • PRI can be included.
  • the terminal may determine the codebook priority index corresponding to HARQ-ACK of the multicast PDSCH according to the high-level signaling configuration; or, pre-define the codebook priority index corresponding to the HARQ-ACK of the multicast PDSCH, such as low priority, or according to The service type or service priority corresponding to the PDSCH reported by the terminal determines the codebook priority index of the HARQ-ACK of the multicast PDSCH.
  • the foregoing second HARQ-ACK related information determined according to the service type of the multicast PDSCH may be determined according to the corresponding relationship between the service type or service priority obtained in advance and the HARQ-ACK related information according to the multicast PDSCH The second HARQ-ACK related information determined by the service type.
  • the above method further includes:
  • the HARQ-ACK feedback of the multicast PDSCH may be determined by determining the HARQ-ACK feedback resource, priority and other information of the multicast PDSCH according to the HARQ-ACK related information, and then The HARQ-ACK feedback of the multicast PDSCH is performed based on the determined information, so as to improve the transmission reliability of the multicast PDSCH.
  • the multicast DCI for scheduling the multicast PDSCH does not include the HARQ-ACK related information.
  • the multicast DCI does not include the HARQ-ACK related information may be that the multicast DCI does not include related content in the HARQ-ACK related information included in step 201.
  • the DAI of the multicast PDSCH is obtained from the DAI indication in the unicast DCI, and the multicast DCI does not include the DAI indication.
  • the k1 of the multicast PDSCH is obtained by the k1 indication in the nearest unicast DCI after the multicast DCI, where the multicast DCI does not include the feedback timing indicator field (for example: PDSCH-to-HARQ_feedback timing indicator field) .
  • the terminal can transmit the HARQ-ACK corresponding to the multicast PDSCH in the time slot n, where the time slot n is indicated according to the feedback timing indicator field in the unicast DCI, and the unicast DCI can be any PDCCH after the multicast DCI.
  • the first unicast DCI detected by the detection opportunity.
  • the UE determines the PUCCH resource for feeding back HARQ-ACK according to the PRI indication in the unicast DCI, where the multicast DCI does not include the PRI indication.
  • the terminal can transmit the HARQ-ACK of the multicast PDSCH on PUCCH1, where PUCCH1 is determined according to the PRI indication in the unicast DCI, and the unicast DCI includes the first one detected by any PDCCH detection opportunity after the multicast DCI.
  • Unicast DCI Unicast DCI.
  • the terminal determines the codebook priority index corresponding to the HARQ-ACK of the multicast PDSCH according to the priority indication of the unicast DCI, where the priority indication field is not included in the multicast DCI, and the unicast DCI includes the multicast DCI The first unicast DCI detected by any one of the PDCCH detection opportunities.
  • HARQ-ACK related information is obtained, and the HARQ-ACK related information is used for HARQ-ACK feedback of the multicast PDSCH of the terminal, where the HARQ-ACK related information includes at least one of the following: The first HARQ-ACK related information included in the unicast DCI detected by the terminal; the second HARQ-ACK related information obtained in advance or implicitly determined by the terminal.
  • the terminal can obtain the aforementioned HARQ-ACK related information. And it can also enable the terminal to support the HARQ-ACK feedback of the multicast service, thereby improving the reliability of the multicast service transmission.
  • FIG. 3 is a flowchart of an information determination method provided by an embodiment of the present application. The method is applied to a network device. As shown in FIG. 3, it includes the following steps:
  • Step 301 Determine HARQ-ACK related information, where the HARQ-ACK related information is used for HARQ-ACK feedback of the terminal's multicast channel PDSCH, where the HARQ-ACK related information includes at least one of the following:
  • the first HARQ-ACK related information included in the unicast DCI sent to the terminal
  • the second HARQ-ACK related information obtained in advance or implicitly determined by the network device.
  • the unicast DCI includes: the first unicast DCI sent to the terminal after the multicast DCI of the multicast PDSCH is scheduled.
  • the first HARQ-ACK related information includes at least one of the following:
  • Downlink allocation indicator DAI feedback timing indicator
  • PUCCH resource indicator PRI transmit power indicator
  • priority indicator transmit power indicator
  • the DAI includes:
  • the first bit and/or the second bit wherein the first bit is used to indicate a unicast channel PDSCH, and the second bit is used to indicate a multicast PDSCH;
  • the third bit is used to jointly indicate unicast PDSCH and multicast PDSCH.
  • the HARQ-ACK of at least one multicast PDSCH of the terminal is multiplexed on the physical uplink shared channel PUSCH for transmission, then the unicast DCI includes the DCI for scheduling the PUSCH.
  • the multicast PDSCH of the terminal corresponds to Q different wireless network temporary identifiers RNTI:
  • the second bit includes Q bit groups, and the Q bit groups are respectively used to indicate the multicast PDSCH corresponding to the Q RNTIs;
  • Q is an integer greater than or equal to 1, or Q is an integer greater than or equal to 1, and less than or equal to a preset threshold.
  • the manner in which the DAI indicates the PDSCH is configured by higher layer signaling.
  • the second HARQ-ACK related information obtained by the network device in advance includes: high-layer signaling configuration second HARQ-ACK related information, or predefined second HARQ-ACK related information;
  • the second HARQ-ACK related information implicitly determined by the network device includes: the second HARQ-ACK related information determined according to the service type of the multicast PDSCH.
  • the second HARQ-ACK related information includes: the HARQ-ACK priority of the multicast PDSCH.
  • the method further includes:
  • the HARQ-ACK feedback of the multicast PDSCH is received.
  • the multicast DCI for scheduling the multicast PDSCH does not include the HARQ-ACK related information.
  • this embodiment is used as an implementation on the network device side corresponding to the embodiment shown in FIG. This embodiment will not be repeated.
  • the terminal can also obtain HARQ-ACK related information.
  • Embodiment 1 As shown in Figure 4, DCI 1-4 schedule PDSCH 1-4 respectively, where DCI 1-2 is multicast DCI, multicast PDSCH 1-2 is scheduled, DCI 3-4 is unicast DCI, and the scheduling list Broadcast PDSCH3-4.
  • the multicast DCI 1-2 does not include the DAI indication, and the DAI information of the scheduled PDSCH is obtained according to the first unicast DCI afterwards.
  • DCI3 contains 2-bit C-DAI or T-DAI to indicate multicast PDSCH, and the value of C-DAI or T-DAI is 2, which means that the current PDCCH receiver will schedule two multicast PDSCHs.
  • the unicast DCI also contains 2 bit C-DAI for unicast PDSCH, and the C-DAI value is 1, indicating that the currently scheduled unicast PDSCH is the first unicast PDSCH.
  • multicast DCI 1-2 may not include PDSCH to HARQ-ACK feedback timing indication information.
  • the timing indication information is obtained from the first unicast DCI afterwards.
  • PDSCH to HARQ-ACK in DCI3 The value of the feedback timing indication information (k1) is 2, which means that the end symbol is fed back in the PDSCH3 of the time slot n in the time slot n+2, and the UE will feedback the HARQ-ACK of the PDSCH 1 and PDSCH2 in the time slot n+2, and also That is, the UE determines the time slot for feeding back the HARQ-ACK of PDSCH1 and PDSCH2 according to the PDSCH to HARQ-ACK feedback timing indication information in DCI3.
  • the multicast DCI 1-2 may not include PRI indication information, and the terminal determines the PUCCH resource for feeding back HARQ-ACK according to the unicast DCI indication.
  • the terminal determines to feed back the PUCCH resources of PDSCH1, PDSCH2, and PDSCH3 according to the indication of DCI3.
  • the terminal feeds back the HARQ-ACK of PDSCH 1, PDSCH 2, PDSCH 3, and PDSCH 4 in time slot n+2, and the terminal controls the PRI and OR of the last DCI (last DCI) in unicast DCI.
  • the channel element index (Control Channel Elements index, CCE index) determines the PUCCH resource for HARQ-ACK feedback.
  • the multicast DCI may not include TPC indication information, and the terminal determines the transmission power of the PUCCH according to the TPC in the unicast DCI.
  • the terminal can separately construct the HARQ-ACK (sub)codebook of the multicast PDSCH1-2 and the HARQ-ACK of the unicast PDSCH 3-4. (Sub)codebook, and concatenate two (sub)codebooks into one codebook.
  • the unicast DCI contains only one DAI indicator, which is used to indicate unicast and multicast PDSCH scheduling.
  • DAI 3 in DCI3, which means that the current PDCCH receiver will be the current DCI ,
  • a total of 3 PDSCHs are scheduled, that is, in addition to the current PDSCH3 scheduled by DCI3, two PDSCHs are also scheduled before DCI3, namely PDSCH 1 and PDSCH2.
  • the terminal feeds back the HARQ-ACK of multicast PDSCH 1-2 and unicast PDSCH 3-4 in time slot n+2.
  • the PUSCH scheduled by DCI 5 overlaps with HARQ-ACK PUCCH resources, and the terminal will HARQ- ACK is multiplexed and transmitted on PUSCH.
  • DCI5 can include T-DAI.
  • T-DAI there are two T-DAIs in DCI5, and the first DAI is used to indicate multicast PDSCH.
  • the terminal can determine that the terminal has missed the third multicast DCI.
  • only one T-DAI indication is included in the UL grant.
  • the T-DAI is applied to multicast PDSCH and unicast PDSCH, and represents the total number of multicast PDSCH and unicast PDSCH fed back in the current time slot. In this way, there is only one T-DAI, the bit overhead is small, and the impact of missed downlink DCI detection on PUSCH transmission is avoided.
  • the T-DAI is applied to unicast PDSCH, which represents the total number of unicast PDSCH fed back in the current time slot.
  • the T-DAI is applied to the multicast PDSCH, which represents the total number of multicast PDSCHs fed back in the current time slot.
  • the UL grant includes multiple T-DAI indications for the multicast PDSCH.
  • the number of T-DAIs is determined according to the number of g-RNTIs configured by the UE for scheduling multicast PDSCH or according to higher-layer signaling.
  • Each T-DAI corresponds to a g-RNTI, which is used to indicate the total number of PDSCHs scheduled by the g-RNTI fed back in the time slot.
  • the T-DAI indication mode of the UL grant can be when there is a DAI indication in the multicast DCI, or there is no DAI indication in the multicast DCI, that is, the DAI indication mode in the UL grant has nothing to do with the DAI indication mode of the multicast DCI .
  • the DCI schedules the unicast PDSCH, it can also indicate the codebook priority index corresponding to the HARQ-ACK of the PDSCH, such as the priority indicator field in the DCI.
  • the terminal can determine which codebook the HARQ-ACK belongs to according to the priority index, and the processing method of the terminal when the HARQ-ACK PUCCH conflicts with other uplink transmission time domain resources (for example, HARQ-ACK PUCCH with high priority and PUCCH with low priority).
  • the terminal discards the PUSCH and transmits the PUCCH. If the PUCCH and PUSCH have the same priority, the terminal multiplexes UCI on the PUSCH for transmission).
  • the codebook priority index problem corresponding to the HARQ-ACK of the multicast PDSCH can be indicated in any of the following ways:
  • Default priority i.e. pre-defined priority index
  • the service type or service priority corresponding to the multicast PDSCH is determined.
  • the execution subject of the information acquisition method provided in the embodiments of the present application may be an information acquisition device, or a control module in the information acquisition device for executing the method for acquiring loading information.
  • the method for acquiring the loaded information executed by the information acquisition method device is taken as an example to illustrate the information acquisition method provided by the embodiment of the present application.
  • the execution subject may be an information determination device, or a control module in the information determination device for executing the method for determining loading information.
  • the method for determining loading information executed by the information determining apparatus is taken as an example to illustrate the information determining method provided in the embodiments of the present application.
  • FIG. 7 is a structural diagram of an information acquisition device provided by an embodiment of the present application. As shown in FIG. 7, the information acquisition device 700 includes:
  • the acquiring module 700 is configured to acquire HARQ-ACK related information of the hybrid automatic repeat request confirmation, and the HARQ-ACK related information is used for HARQ-ACK feedback of the multicast physical downlink shared channel PDSCH of the terminal, wherein the HARQ -ACK related information includes at least one of the following:
  • the second HARQ-ACK related information obtained in advance or implicitly determined by the terminal.
  • the unicast DCI includes: the first unicast DCI detected by the terminal after the multicast DCI of the multicast PDSCH is scheduled.
  • the first HARQ-ACK related information includes at least one of the following:
  • Downlink allocation indicator DAI feedback timing indicator
  • PUCCH resource indicator PRI transmit power indicator
  • priority indicator transmit power indicator
  • the DAI includes:
  • the first bit and/or the second bit wherein the first bit is used to indicate unicast PDSCH, and the second bit is used to indicate multicast PDSCH;
  • the third bit is used to jointly indicate unicast PDSCH and multicast PDSCH.
  • the unicast DCI includes the DCI for scheduling the PUSCH.
  • the multicast PDSCH of the terminal corresponds to Q different wireless network temporary identifiers RNTI:
  • the second bit includes Q bit groups, and the Q bit groups are respectively used to indicate the multicast PDSCH corresponding to the Q RNTIs;
  • Q is an integer greater than or equal to 1, or Q is an integer greater than or equal to 1, and less than or equal to a preset threshold.
  • the manner in which the DAI indicates the PDSCH is configured by higher layer signaling.
  • the second HARQ-ACK related information obtained by the terminal in advance includes: second HARQ-ACK related information configured by higher layer signaling, or predefined second HARQ-ACK related information;
  • the second HARQ-ACK related information implicitly determined by the terminal includes: the second HARQ-ACK related information determined according to the service type of the multicast PDSCH.
  • the second HARQ-ACK related information includes: the HARQ-ACK priority of the multicast PDSCH.
  • the device includes:
  • the feedback module 702 is configured to perform HARQ-ACK feedback of the multicast PDSCH according to the HARQ-ACK related information.
  • the multicast DCI for scheduling the multicast PDSCH does not include the HARQ-ACK related information.
  • the information acquisition device provided in the embodiment of the present invention can implement each process in the method embodiment of FIG.
  • the information acquiring device in the embodiment of the present application may be a device, or a component, an integrated circuit, or a chip in a terminal.
  • FIG. 9 is a structural diagram of an information determining apparatus provided by an embodiment of the present application. As shown in FIG. 9, the information determining apparatus 900 includes:
  • the determining module 901 is configured to determine the HARQ-ACK related information of the hybrid automatic repeat request confirmation, and the HARQ-ACK related information is used for HARQ-ACK feedback of the terminal's multicast physical downlink shared channel PDSCH, wherein the HARQ-ACK
  • the relevant information includes at least one of the following:
  • the second HARQ-ACK related information obtained in advance or implicitly determined by the network device.
  • the unicast DCI includes: the first unicast DCI sent to the terminal after the multicast DCI of the multicast PDSCH is scheduled.
  • the first HARQ-ACK related information includes at least one of the following:
  • Downlink allocation indicator DAI feedback timing indicator
  • PUCCH resource indicator PRI transmit power indicator
  • priority indicator transmit power indicator
  • the DAI includes:
  • the first bit and/or the second bit wherein the first bit is used to indicate a unicast channel PDSCH, and the second bit is used to indicate a multicast PDSCH;
  • the third bit is used to jointly indicate unicast PDSCH and multicast PDSCH.
  • the HARQ-ACK of at least one multicast PDSCH of the terminal is multiplexed on the physical uplink shared channel PUSCH for transmission, then the unicast DCI includes the DCI for scheduling the PUSCH.
  • the multicast PDSCH of the terminal corresponds to Q different wireless network temporary identifiers RNTI:
  • the second bit includes Q bit groups, and the Q bit groups are respectively used to indicate the multicast PDSCH corresponding to the Q RNTIs;
  • Q is an integer greater than or equal to 1, or Q is an integer greater than or equal to 1, and less than or equal to a preset threshold.
  • the manner in which the DAI indicates the PDSCH is configured by higher layer signaling.
  • the second HARQ-ACK related information obtained by the network device in advance includes: high-layer signaling configuration second HARQ-ACK related information, or predefined second HARQ-ACK related information;
  • the second HARQ-ACK related information implicitly determined by the network device includes: the second HARQ-ACK related information determined according to the service type of the multicast PDSCH.
  • the second HARQ-ACK related information includes: the HARQ-ACK priority of the multicast PDSCH.
  • the device further includes:
  • the receiving module 802 is configured to receive HARQ-ACK feedback of the multicast PDSCH according to the HARQ-ACK related information.
  • the multicast DCI for scheduling the multicast PDSCH does not include the HARQ-ACK related information.
  • the information determining apparatus provided in the embodiment of the present invention can implement each process in the method embodiment of FIG. 3. To avoid repetition, details are not described here, and the terminal can obtain HARQ-ACK related information.
  • the obtaining and determining apparatus in the embodiment of the present application may be an apparatus, or a component, integrated circuit, or chip in a network device.
  • FIG. 11 is a schematic diagram of the hardware structure of a terminal that implements an embodiment of the present application.
  • the terminal 1100 includes but is not limited to: a radio frequency unit 1101, a network module 1102, an audio output unit 1103, an input unit 1104, a sensor 1105, a display unit 1106, a user input unit 1107, an interface unit 1108, a memory 1109, a processor 1110 and other components .
  • the terminal 1100 may also include a power source (such as a battery) for supplying power to various components, and the power source may be logically connected to the processor 1110 through a power management system, so as to manage charging, discharging, and power consumption through the power management system. Management and other functions.
  • a power source such as a battery
  • the structure of the electronic device shown in FIG. 11 does not constitute a limitation on the electronic device.
  • the electronic device may include more or less components than those shown in the figure, or some components may be combined, or different component arrangements, which will not be repeated here. .
  • the radio frequency unit 1101 or the processor 1110 is configured to obtain HARQ-ACK related information for the hybrid automatic repeat request confirmation, and the HARQ-ACK related information is used for HARQ-ACK feedback of the multicast physical downlink shared channel PDSCH of the terminal ,
  • the HARQ-ACK related information includes at least one of the following:
  • the second HARQ-ACK related information obtained in advance or implicitly determined by the terminal.
  • the unicast DCI includes: the first unicast DCI detected by the terminal after the multicast DCI of the multicast PDSCH is scheduled.
  • the first HARQ-ACK related information includes at least one of the following:
  • Downlink allocation indicator DAI feedback timing indicator
  • PUCCH resource indicator PRI transmit power indicator
  • priority indicator transmit power indicator
  • the DAI includes:
  • the first bit and/or the second bit wherein the first bit is used to indicate unicast PDSCH, and the second bit is used to indicate multicast PDSCH;
  • the third bit is used to jointly indicate unicast PDSCH and multicast PDSCH.
  • the unicast DCI includes the DCI for scheduling the PUSCH.
  • the multicast PDSCH of the terminal corresponds to Q different wireless network temporary identifiers RNTI:
  • the second bit includes Q bit groups, and the Q bit groups are respectively used to indicate the multicast PDSCH corresponding to the Q RNTIs;
  • Q is an integer greater than or equal to 1, or Q is an integer greater than or equal to 1, and less than or equal to a preset threshold.
  • the manner in which the DAI indicates the PDSCH is configured by higher layer signaling.
  • the second HARQ-ACK related information obtained by the terminal in advance includes: second HARQ-ACK related information configured by higher layer signaling, or predefined second HARQ-ACK related information;
  • the second HARQ-ACK related information implicitly determined by the terminal includes: the second HARQ-ACK related information determined according to the service type of the multicast PDSCH.
  • the second HARQ-ACK related information includes: the HARQ-ACK priority of the multicast PDSCH.
  • the radio frequency unit 1101 is also used for:
  • the multicast DCI for scheduling the multicast PDSCH does not include the HARQ-ACK related information.
  • the foregoing terminal may obtain the foregoing HARQ-ACK related information. And it can also enable the terminal to support the HARQ-ACK feedback of the multicast service, thereby improving the reliability of the multicast service transmission.
  • an embodiment of the present invention further provides a terminal, including a processor 1110, a memory 1109, and a program or instruction stored on the memory 1109 and capable of running on the processor 1110.
  • the program or instruction is executed by the processor 1110.
  • Fig. 12 is a structural diagram of a network device provided by an embodiment of the present invention.
  • the network device 1200 includes: a processor 1201, a transceiver 1202, a memory 1203, and a bus interface, where:
  • the transceiver 1202 or the processor 1201 is configured to determine the HARQ-ACK related information of the hybrid automatic repeat request confirmation, and the HARQ-ACK related information is used for HARQ-ACK feedback of the terminal's multicast physical downlink shared channel PDSCH, where
  • the HARQ-ACK related information includes at least one of the following:
  • the second HARQ-ACK related information obtained in advance or implicitly determined by the network device.
  • the unicast DCI includes: the first unicast DCI sent to the terminal after the multicast DCI of the multicast PDSCH is scheduled.
  • the first HARQ-ACK related information includes at least one of the following:
  • Downlink allocation indicator DAI feedback timing indicator
  • PUCCH resource indicator PRI transmit power indicator
  • priority indicator transmit power indicator
  • the DAI includes:
  • the first bit and/or the second bit wherein the first bit is used to indicate a unicast channel PDSCH, and the second bit is used to indicate a multicast PDSCH;
  • the third bit is used to jointly indicate unicast PDSCH and multicast PDSCH.
  • the HARQ-ACK of at least one multicast PDSCH of the terminal is multiplexed on the physical uplink shared channel PUSCH for transmission, then the unicast DCI includes the DCI for scheduling the PUSCH.
  • the multicast PDSCH of the terminal corresponds to Q different wireless network temporary identifiers RNTI:
  • the second bit includes Q bit groups, and the Q bit groups are respectively used to indicate the multicast PDSCH corresponding to the Q RNTIs;
  • Q is an integer greater than or equal to 1, or Q is an integer greater than or equal to 1, and less than or equal to a preset threshold.
  • the manner in which the DAI indicates the PDSCH is configured by higher layer signaling.
  • the second HARQ-ACK related information obtained by the network device in advance includes: high-layer signaling configuration second HARQ-ACK related information, or predefined second HARQ-ACK related information;
  • the second HARQ-ACK related information implicitly determined by the network device includes: the second HARQ-ACK related information determined according to the service type of the multicast PDSCH.
  • the second HARQ-ACK related information includes: the HARQ-ACK priority of the multicast PDSCH.
  • the transceiver 1202 is also used for:
  • the HARQ-ACK feedback of the multicast PDSCH is received.
  • the multicast DCI for scheduling the multicast PDSCH does not include the HARQ-ACK related information.
  • the foregoing network device may enable the terminal to obtain the foregoing HARQ-ACK related information. And it can also enable the terminal to support the HARQ-ACK feedback of the multicast service, thereby improving the reliability of the multicast service transmission.
  • the transceiver 1202 is configured to receive and send data under the control of the processor 1201, and the transceiver 1202 includes at least two antenna ports.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1201 and various circuits of the memory represented by the memory 1203 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface provides the interface.
  • the transceiver 1202 may be a plurality of elements, that is, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium.
  • the user interface 1204 may also be an interface capable of externally connecting internally required equipment, and the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1201 is responsible for managing the bus architecture and general processing, and the memory 1203 can store data used by the processor 1201 when performing operations.
  • the embodiment of the present invention also provides a network device, including a processor 1201, a memory 1203, a program or instruction stored on the memory 1203 and running on the processor 1201, and the program or instruction is executed by the processor 1201.
  • a network device including a processor 1201, a memory 1203, a program or instruction stored on the memory 1203 and running on the processor 1201, and the program or instruction is executed by the processor 1201.
  • the embodiment of the present application further provides a readable storage medium, the readable storage medium stores a program or instruction, and when the program or instruction is executed by a processor, each process of the foregoing information acquisition method or information determination method embodiment is implemented, And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here.
  • the processor is the processor in the terminal or network device described in the foregoing embodiment.
  • the readable storage medium includes a computer readable storage medium, such as a computer read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk, or optical disk.
  • An embodiment of the present application further provides a chip, the chip includes a processor and a communication interface, the communication interface is coupled with the processor, and the processor is used to run a program or an instruction to implement the above-mentioned information acquisition method or information determination
  • the processor is used to run a program or an instruction to implement the above-mentioned information acquisition method or information determination
  • chips mentioned in the embodiments of the present application may also be referred to as system-level chips, system-on-chips, system-on-chips, or system-on-chips.
  • modules, units, sub-modules, sub-units, etc. can be implemented in one or more application specific integrated circuits (ASICs), digital signal processors (Digital Signal Processing, DSP), digital signal processing equipment ( DSP Device, DSPD), Programmable Logic Device (Programmable Logic Device, PLD), Field-Programmable Gate Array (Field-Programmable Gate Array, FPGA), general-purpose processors, controllers, microcontrollers, microprocessors, Other electronic units or combinations thereof that perform the functions described in this application.
  • ASICs application specific integrated circuits
  • DSP Digital Signal Processing
  • DSP Device digital signal processing equipment
  • PLD Programmable Logic Device
  • Field-Programmable Gate Array Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array
  • the technical solution of this application essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes several instructions to make a terminal (which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the methods described in the various embodiments of the present application.
  • a terminal which may be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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Abstract

Un procédé d'acquisition d'informations, un procédé de détermination d'informations, un appareil, et un dispositif associé sont divulgués dans la présente invention. Le procédé d'acquisition d'informations consiste à : acquérir des informations liées à HARQ-ACK, les informations liées à HARQ-ACK étant utilisées pour la rétroaction HARQ-ACK d'un PDSCH de multidiffusion d'un terminal, et les informations liées à HARQ-ACK comprenant au moins l'un parmi les suivants : des premières informations liées à HARQ-ACK comprises dans des DCI de monodiffusion détectées par le terminal, et des secondes informations liées à HARQ-ACK qui sont préalablement acquises ou implicitement déterminées par le terminal.
PCT/CN2021/089869 2020-04-30 2021-04-26 Procédé d'acquisition d'informations, procédé de détermination d'informations, appareil et dispositif associé WO2021218907A1 (fr)

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WO2023122932A1 (fr) * 2021-12-28 2023-07-06 Zte Corporation Techniques de génération d'accusé de réception de demande de répétition automatique hybride pour canaux partagés communs de groupe

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