WO2021159981A1 - Procédé de transmission d'informations de commande de liaison descendante, dispositif terminal et dispositif réseau - Google Patents

Procédé de transmission d'informations de commande de liaison descendante, dispositif terminal et dispositif réseau Download PDF

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Publication number
WO2021159981A1
WO2021159981A1 PCT/CN2021/074628 CN2021074628W WO2021159981A1 WO 2021159981 A1 WO2021159981 A1 WO 2021159981A1 CN 2021074628 W CN2021074628 W CN 2021074628W WO 2021159981 A1 WO2021159981 A1 WO 2021159981A1
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WIPO (PCT)
Prior art keywords
coreset
time
frequency resource
tci state
downlink control
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PCT/CN2021/074628
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English (en)
Chinese (zh)
Inventor
刘昊
李�根
鲁智
宋扬
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维沃移动通信有限公司
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Publication of WO2021159981A1 publication Critical patent/WO2021159981A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA

Definitions

  • the present invention relates to the field of communications, and in particular to a method for downlink control information, terminal equipment and network equipment.
  • the Physical Downlink Control Channel is mainly used to transmit network control information and indicate how to transmit downlink or uplink traffic channels.
  • information such as the frequency domain position occupied by the PDCCH on the bandwidth and the number of OFDM symbols occupied in the time domain is encapsulated in the control resource set (CORESET), and the network is the terminal equipment (UE, User Equipment).
  • CORESET control resource set
  • UE User Equipment
  • TCI transmission configuration indication
  • the UE may maintain communication links with multiple TRPs at the same time.
  • TRP Transmit-Receive Points
  • a certain communication link may be suddenly blocked, resulting in a sudden drop in link performance.
  • PDCCH Physical Downlink Control Channel
  • a reliable transmission scheme is to send the PDCCH on two TRPs at the same time to improve the transmission robustness.
  • each CORESET can configure multiple activated TCI states through RRC
  • the network can only activate one TCI of CORESET through the Media Access Control (MAC) control element (CE).
  • MAC Media Access Control
  • CE Media Access Control
  • the wireless channel characteristics and transmission beams of each TRP are different, corresponding to different TCI states. Therefore, it is necessary to activate multiple activated TCI states for CORESET.
  • there are multiple activated TCI states corresponding to CORESET there is no effective solution for how to transmit downlink control information.
  • the purpose of the embodiments of the present invention is to provide a downlink control information transmission method, terminal equipment and network equipment to transmit downlink control information when there are multiple activated TCI states corresponding to CORESET.
  • a method for transmitting downlink control information is provided, which is applied to a terminal device.
  • the method includes: acquiring a plurality of activated transmission configuration indication (TCI) states corresponding to a control resource set (CORESET);
  • the activated TCI state of each time-frequency resource receives downlink control information transmitted on the physical downlink control channel (PDCCH); wherein, the activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency resource granularity, And determined in the multiple activated TCI states according to a predetermined rule.
  • TCI transmission configuration indication
  • a downlink control information transmission method which is applied to a network device.
  • the method includes: sending instruction information to indicate a plurality of activated TCI states corresponding to CORESET;
  • the activated TCI state is the downlink control information transmitted on the PDCCH; wherein, the activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency resource granularity, and is activated in the plurality of time-frequency resources according to a predetermined rule Determined in the TCI status.
  • a method for receiving a physical downlink shared channel is provided, which is applied to a terminal device.
  • the method includes: at least one CORESET in the first CORESET corresponds to multiple activated TCI states, media access control
  • the layer MAC control unit CE configures multiple code points for the PDSCH, and each of the code points is mapped to a TCI state, if the received downlink control information (DCI) and the time offset between the PDSCH Less than the receiving processing capability threshold reported by the terminal equipment, the TCI state or QCL relationship of the received PDSCH is determined in a predetermined manner, wherein the PDSCH corresponds to the PDSCH, and the first CORESET is the distance from the DCI All CORESETs on the BWP of the carrier bandwidth part of the activated serving cell monitored in the most recent time slot.
  • DCI downlink control information
  • a terminal device including: an acquisition module, configured to acquire multiple activated transmission configuration indications (TCI status) corresponding to a control resource set (CORESET); and a receiving module, configured according to each of the CORESET
  • TCI status transmission configuration indications
  • CORESET control resource set
  • the activated TCI state of the time-frequency resource receives downlink control information transmitted on the physical downlink control channel (PDCCH); wherein the activated TCI state of each time-frequency resource in the CORESET is based on the preset time-frequency resource granularity, and Determined in the plurality of activated TCI states according to predetermined rules.
  • PDCCH physical downlink control channel
  • a network device including: a sending module for sending instruction information to indicate multiple activated TCI states corresponding to CORESET;
  • the activated TCI state is the downlink control information transmitted on the PDCCH; wherein, the activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency resource granularity, and the activated TCI state is performed in the plurality of activated TCIs according to predetermined rules. Determined in the state.
  • a terminal device including: a first CORESET corresponding to at least one CORESET corresponding to multiple activated TCI states, a media access control layer MAC control unit CE configuring multiple code points for PDSCH, and In the case where each code point is mapped to a TCI state, if the time offset between the received downlink control information DCI and PDSCH is less than the receiving processing capability threshold reported by the terminal device, the predetermined method is used , Determine the TCI state or QCL relationship of the received PDSCH, where the first CORESET is all CORESETs on the active carrier bandwidth part (BWP) of the serving cell monitored in the time slot closest to the DCI.
  • BWP active carrier bandwidth part
  • a network device including: a memory, a processor, and a computer program stored in the memory and capable of being run on the processor.
  • the computer program When the computer program is executed by the processor, the following The steps of the method described in the second aspect.
  • a terminal device including: a memory, a processor, and a computer program stored in the memory and capable of being run on the processor.
  • the computer program is executed by the processor, the computer program is The steps of the method described in one aspect or the third aspect.
  • a computer-readable storage medium is provided, and a computer program is stored on the computer-readable storage medium. Steps of the method.
  • the downlink control information transmitted on the PDCCH is received according to the activated TCI state of each time-frequency resource in the CORESET, where each time-frequency resource in the CORESET
  • the activated TCI state of the resource is based on the preset time-frequency resource granularity and is determined in the multiple activated TCI states according to predetermined rules, so that the downlink control can be transmitted when there are multiple activated TCI states corresponding to CORESET Information, so that the UE can receive the network control information transmitted by each TRP on the CORESET resource, which improves the transmission robustness.
  • FIG. 1 is a schematic diagram of a UE maintaining a communication link with multiple TRPs in the related art at the same time;
  • FIG. 2 is a schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a structure of a CORESET resource provided by an embodiment of the present invention.
  • Figure 4a is a schematic diagram of the TCI state configuration of a CORESET resource in an embodiment of the present invention
  • Figure 4b is a schematic diagram of the TCI state configuration of another CORESET resource in an embodiment of the present invention.
  • FIG. 4c is a schematic diagram of another TCI state configuration diagram of a CORESET resource in an embodiment of the present invention.
  • FIG. 4d is a schematic diagram of another TCI state configuration of a CORESET resource in an embodiment of the present invention.
  • FIG. 5 is another schematic flowchart of a method for transmitting downlink control information according to an embodiment of the present invention.
  • FIG. 6 is a schematic flowchart of a method for receiving PDSCH according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of a network device provided by an embodiment of the present invention.
  • FIG. 8 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 9 is a schematic structural diagram of another terminal device according to an embodiment of the present invention.
  • FIG. 10 is a schematic structural diagram of a terminal device according to an embodiment of the present invention.
  • FIG. 11 is a schematic structural diagram of a network device provided by an embodiment of the present invention.
  • GSM Global System of Mobile Communication
  • CDMA Code Division Multiple Access
  • GSM Wideband Code Division Multiple Access
  • WCDMA Wideband Code Division Multiple Access
  • GPRS General Packet Radio Service
  • LTE Long Term Evolution
  • LTE-A Long Term Evolution Advanced
  • NR New Radio
  • the user equipment can be connected to one or more cores via a radio access network (for example, RAN, Radio Access Network)
  • the user equipment can be a mobile terminal, such as a mobile phone (or “cellular” phone) and a computer with a mobile terminal.
  • a mobile terminal such as a mobile phone (or “cellular” phone) and a computer with a mobile terminal.
  • a mobile terminal such as a mobile phone (or “cellular” phone) and a computer with a mobile terminal.
  • it can be a portable, pocket-sized, handheld, built-in computer or vehicle-mounted mobile device. , They exchange language and/or data with the wireless access network.
  • the base station can be a base station (BTS, Base Transceiver Station) in GSM or CDMA, a base station (NodeB) in WCDMA, or an evolved base station (eNB or e-NodeB, evolutional Node B) in LTE.
  • BTS Base Transceiver Station
  • NodeB base station
  • eNB evolved base station
  • gNB 5G base station
  • the 5G base station (gNB) is not limited in the present invention, but for the convenience of description, the following embodiments take gNB as an example for description.
  • FIG. 2 is a schematic flowchart of a method for transmitting downlink control information provided in an embodiment of the present invention.
  • the method 200 may be executed by a terminal device.
  • the method can be executed by software or hardware installed on the terminal device.
  • the method may include the following steps.
  • the network device is configuring CORESET for the UE, and at the same time, the TCI state of the CORESET needs to be configured to indicate the search space (Search Space) bound by the CORESET.
  • the network side needs to activate multiple activated TCI states for CORESET.
  • the network device can configure multiple TCI states of one CORESET through radio resource control (RRC) configuration signaling, and activate multiple TCI states of CORESET through MAC CE.
  • RRC radio resource control
  • the network device configures 10 TCI states for the UE through RRC configuration signaling.
  • the network device activates two of the TCI states through MAC CE.
  • the terminal device can obtain multiple activated TCI states corresponding to CORESET from the MAC CE.
  • S212 Receive the downlink control information transmitted on the PDCCH according to the activated TCI state of each time-frequency resource in the CORESET.
  • the activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency resource granularity, and is determined in the multiple activated TCI states according to a predetermined rule.
  • the TCI state of each time-frequency resource of the CORESET can be configured based on a preset time-frequency resource granularity and according to a predetermined rule.
  • FIG 3 is a schematic diagram of the structure of a CORESET time-frequency resource.
  • the CORESET resource is composed of multiple resource element groups (REG), among which 6 REGs can form a control channel element (CCE), and 6 REG can also form a REG bundle (bundle). Therefore, in a possible implementation manner, the preset time-frequency resource granularity may be a frequency domain granularity based on frequency domain division.
  • REG resource element groups
  • CCE control channel element
  • the preset time-frequency resource granularity may be a frequency domain granularity based on frequency domain division.
  • the frequency domain granularity based on frequency domain division may include one of the following (1) to (6).
  • the size of the REG bundle configured by CORESET That is, the time-frequency resources of CORESET are divided into time-frequency resources one by one according to the size of one REG bundle, and the TCI state is configured for each time-frequency resource.
  • each CCE included in CORESET is configured with a TCI state).
  • the precoding granularity of CORESET configuration That is, the time-frequency resources of CORESET are divided into time-frequency resources one by one according to the precoding granularity, and the TCI state is configured for each time-frequency resource.
  • the preset time-frequency resource granularity may also be a time-domain granularity based on time-domain division.
  • the PDCCH information on the CORESET is repeatedly sent on each resource of the time domain granularity based on the time domain division.
  • the time domain granularity based on the time domain division may include one of the following (1) to (3).
  • the search space (Search Space, SS) associated with the CORESET That is, configure the TCI state of each resource of CORESET according to the SS associated with CORESET.
  • the search space continuously monitors the number of time slots (duration) of the search space set.
  • the activated TCI state of each time-frequency resource in the CORESET when determining the activated TCI state of each time-frequency resource in the CORESET according to a predetermined rule, it may be based on the number P of multiple activated TCI states and the CORESET time based on the granularity of the time-frequency resource.
  • the quantity Q of frequency resources determines the activated TCI state of each time-frequency resource of CORESET.
  • each activated TCI state is mapped to each time-frequency resource of CORESET, and the TCI state of each time-frequency resource of CORESET is different. If P ⁇ Q, some of the time-frequency resources of CORESET have the same TCI state. The details can be determined according to actual applications.
  • the predetermined rule includes: based on the time-frequency resource granularity, each time-frequency resource of the CORESET is configured with multiple activated TCI states on average.
  • the first time-frequency resource of the time-frequency resource granularity of the CORESET is the first TCI among the multiple activated TCI states State
  • the second time-frequency resource of the time-frequency resource granularity of the CORESET is the second TCI state among the multiple activated TCI states
  • the Nth time-frequency resource of the CORESET The time-frequency resource of the resource granularity is the Nth TCI state among the plurality of activated TCI states
  • the N+1th time-frequency resource of the time-frequency resource granularity of the CORESET is the first TCI state
  • the N+2th time-frequency resource of the time-frequency resource granularity of the CORESET is the second TCI state, and so on, until the last time-frequency resource of the CORESET granularity of the time-frequency resource is determined
  • the TCI state of the resource where N is the number of the multiple activated TCI states.
  • CORESET is configured with two TCI states: TCI state1 and TCI state2.
  • the time-frequency resource configuration with odd REG bundle index (index) is defined as TCI state1
  • the time-frequency resource configuration with even REG bundle index is defined as TCI state2.
  • time-frequency resource granularity is configured as CCE
  • TCI state1 the time-frequency resource with odd CCE index
  • TCI state2 the time-frequency resource with even CCE index
  • the time-frequency resource granularity is the PDCCH aggregation level
  • the CORESET configuration aggregation level is AL
  • the pre-allocated CCE resources are mapped according to the location of the aggregation level AL/2 CCE resources.
  • each candidate of the AL is divided into two parts, the first part is configured as TCI state1, and the second part is configured as TCI state2. As shown in Figure 4a.
  • time-frequency resource granularity is configured as the search space associated with CORSET, it is assumed that the number of search spaces associated with the CORESET is the same as the number of TCI states where the CORESET is activated. Define the time-frequency resource configuration of the first search space as TCI state1, and the time-frequency resource configuration of the second search space as TCI state2.
  • the search spaces ss1 and ss2 are sent on different time slots.
  • the search space ss1 is configured with the first TCI state
  • the search space ss2 is configured with the second TCI state.
  • the same PDCCH information is periodically and repeatedly sent on two TCI states, that is, two search spaces.
  • the search space for continuously monitoring two slots is currently configured.
  • the SS on slot n is configured as the first TCI state
  • the ss on slot n+1 is configured as the second TCI state.
  • the same PDCCH information is periodically and repeatedly sent on the time slots corresponding to the two TCI states, namely slot n and slot n+1.
  • time-frequency resource granularity is the number of locations or occurrences where CORESET occurs in each time slot in the search space, that is, based on the number of locations where CORESET occurs in each time slot of the SS.
  • occurrence1 is configured as the first TCI state
  • occurrence2 is configured as the second TCI state.
  • the same PDCCH information is periodically and repeatedly sent on two TCI states, that is, two occasions.
  • the predetermined rule may be pre-configured, and both the network device and the terminal device have been known.
  • the predetermined rule may also be agreed in advance by the network device and the terminal device.
  • the predetermined rule may also be configured on the network side, and then notified to the terminal device through signaling. Therefore, in a possible implementation manner, after S212, the method may further include: receiving a second preset signaling sent by the network side, wherein the second preset signaling carries an indication of the predetermined rule The second parameter.
  • the second preset signaling may carry a series of bit sequences to indicate the TCI state of each time-frequency resource . For example, 0 represents TCI state 1, and 1 represents TCI state 2.
  • the preset time-frequency resource granularity may be pre-configured.
  • the preset time-frequency resource granularity may be configured to CCE through high-level signaling, or it may be network equipment and terminal equipment. Agreed. It may also be selected by the network device according to actual conditions. In this case, the network device needs to notify the terminal device of the preset time-frequency resource granularity of its selection. Therefore, in a possible implementation manner, before S212, the method may further include: receiving a first preset signaling sent by the network side, wherein the first preset signaling carries a command indicating the preset The first parameter of the time-frequency resource granularity.
  • the terminal device can determine the time-frequency resource granularity used when the network device configures each time-frequency resource of CORESET according to the first parameter.
  • the network device can notify the terminal device of multiple TCI states in which CORESET is activated through the downlink MAC CE. Therefore, in a possible implementation manner, the above-mentioned first parameter is also sent to the terminal device through the MAC CE, or, the above-mentioned first parameter can also be transmitted by using signaling different from the signaling for notifying the multiple TCI states that CORESET is activated.
  • other signaling is used to instruct the time-frequency resource of CORESET to configure two TCI states based on a certain resource granularity according to corresponding rules.
  • the first parameter indicating the preset time-frequency resource granularity may be indicated in an agreed manner, such as one of the foregoing various time-frequency resource granularity.
  • the parameter value of the parameter may also be empty, indicating that all the multiple activated TCI states are configured for all the time-frequency resources of the CORESET.
  • the foregoing first preset signaling may also not carry a parameter indicating the granularity of the preset time-frequency resource.
  • the network device is instructed to be all the time-frequency resources of the CORESET. All of the multiple activated TCI states are configured.
  • the first parameter of the first preset information is empty or does not carry the first parameter, which may indicate that all the time-frequency resources of the CORESET are configured for the multiple activated TCIs at the same time. Activate the TCI state.
  • the downlink control information transmitted on the PDCCH is received according to the activated TCI state of each time-frequency resource in the CORESET, where the CORESET is The activated TCI state of each time-frequency resource is based on the preset time-frequency resource granularity and is determined in the multiple activated TCI states according to predetermined rules, so that when CORESET corresponds to multiple activated TCI states, The downlink control information is transmitted so that the UE can receive the network control information transmitted by each TRP on the CORESET resource, which improves the transmission robustness.
  • FIG. 5 is a schematic flowchart of another method for transmitting downlink control information according to an embodiment of the present invention.
  • the method 500 may be executed by a network device.
  • the method can be executed by software or hardware installed on a network device.
  • the method may include the following steps.
  • S510 Send instruction information to indicate multiple activated TCI states corresponding to CORESET.
  • the activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency resource granularity and is determined in the multiple activated TCI states according to a predetermined rule.
  • the preset time-frequency resource granularity and the predetermined rule are the same as those in the method 200, and refer to the description in the method 200 for details.
  • the predetermined time-frequency resource granularity may be pre-configured by the network side through high-level signaling, or may be determined by the terminal device in advance with the network device, or may be determined by the network device and sent to the terminal device. of. If it is determined by the network device and sent to the terminal device, in a possible implementation manner, before S512, the method may further include: sending the first preset signaling, wherein the first preset signaling is The first parameter indicating the granularity of the preset time-frequency resource is carried.
  • the parameter value of the first parameter carried in the first preset signaling may be null. In this case, it indicates that all the time-frequency resources of the CORESET of the terminal device are Configure all the multiple activated TCI states.
  • the indication information indicating that the multiple activated TCI states of the CORESET are activated and the above-mentioned first parameter may be carried in the same signaling for notification, or may be notified through different signaling.
  • the network device can indicate the multiple activated TCI status indication information indicating that the CORESET is activated, and the first parameter is indicated to the terminal device through MAC CE, or it can be notified through different signaling.
  • the network device can indicate the multiple activated TCI status indication information indicating that the CORESET is activated, and the first parameter is indicated to the terminal device through MAC CE, or it can be notified through different signaling.
  • the terminal device may determine the quasi-collocation (QCL) of the received PDCCH based on the activated TCI state of each time-frequency resource of the CORESET, and then receive the QCL transmitted on the PDCCH based on the QCL of the received PDCCH.
  • QCL quasi-collocation
  • the predetermined rule may be pre-agreed with the terminal device, or pre-configured, or may also be indicated to the terminal device after the network device determines it. Therefore, in a possible implementation manner, before S512, the method may further include: sending a second preset signaling, wherein the second preset signaling carries a second parameter indicating the predetermined rule .
  • the network device when the network device transmits downlink control information, it determines the activated TCI state of each time-frequency resource configuration of CORESET based on the preset time-frequency resource granularity and predetermined rules, so that it can correspond to CORESET When there are multiple activated TCI states, downlink control information is transmitted.
  • the PDCCH schedules the physical downlink shared channel (PDSCH), and the downlink control information (DCI) sent by the network device to the UE through the PDCCH indicates the spatial reception beam information (ie, the TCI state) of the PDSCH scheduled by the PDCCH. Therefore, only after the UE monitors the DCI can it correctly interpret the TCI state and determine the receiving beam used to receive the PDSCH scheduled by the PDCCH. However, it takes a certain time for the UE to detect DCI and switch beams according to the TCI indication, such as the threshold timeDurationForQCL.
  • the UE cannot determine the TCI state or QCL relationship of the received PDSCH.
  • an embodiment of the present invention provides a PDSCH receiving method.
  • FIG. 6 is a schematic flowchart of a method for receiving PDSCH according to an embodiment of the present invention.
  • the method 600 may be executed by a terminal device.
  • the method can be executed by software or hardware installed on the terminal device.
  • the method may include the following steps.
  • the MAC CE configures multiple code points for the PDSCH, and each of the code points maps a TCI state, if the received When the time offset between the downlink control information (DCI) and the corresponding PDSCH is less than the receiving processing capability threshold reported by the terminal device, the TCI state or QCL relationship of the received PDSCH is determined according to a predetermined manner, where: The first CORESET is all CORESETs on the bandwidth part (Bandwidth Part, BWP) of the active carrier of the serving cell monitored in the time slot closest to the DCI.
  • BWP bandwidth part
  • determining the TCI state or QCL relationship of the received PDSCH according to a predetermined manner includes: determining the TCI state and/or QCL relationship of the received PDSCH according to the TCI state of the target CORESET, wherein The target CORESET belongs to one of the first CORESETs, where the first CORESET is all CORESETs on the bandwidth part (Bandwidth Part, BWP) of the monitored serving cell activated in the time slot.
  • BWP bandwidth part
  • the target CORESET can include one of the following:
  • the target CORESET is the CORESET with the smallest CORESET identifier in the second CORESET, and the second CORESET is configured with only one TCI state; correspondingly Ground, the UE may determine that the TCI state of the received PDSCH and the TCI state of the target CORESET are in a QCL relationship.
  • the target CORESET is the CORESET with the smallest CORESET identifier in the first CORESET; correspondingly, the UE can determine to receive the TCI of the PDSCH The state is in a QCL relationship with the first TCI state of the target CORESET or the TCI state with the smallest identifier.
  • the first CORESET includes at least one third CORESET
  • the target CORESET is the CORESET with the smallest CORESET identifier in the third CORESET
  • the third CORESET is configured with multiple activated TCI states.
  • the UE may determine that the multiple activated TCI states receiving the PDSCH and the multiple activated TCI states of the target CORESET are in a one-to-one mapping QCL relationship.
  • the TCI status or QCL relationship of the received PDSCH can also be determined based on the TCI status of the code point. Therefore, in this possible implementation manner, according to a predetermined manner, determining the TCI state or QCL relationship of the received PDSCH may include: determining that the TCI state of the received PDSCH and the TCI state of the target code point are in a QCL relationship, where The target code point is the code point with the smallest index among the multiple code points. That is, the target code point is the code point with the smallest index configured for the PDSCH in the MAC CE.
  • the control resource set when the control resource set (CORESET) may activate multiple TCI states, and the offset between the DCI received by the terminal device and the corresponding PDSCH is less than the receiving processing capability threshold reported by the terminal device, the terminal device
  • the TCI status of CORESET and the TCI status of PDSCH or the TCI status of codepoints determine the TCI or QCL of the received PDSCH. This can solve the problem of receiving PDSCH when the offset is less than the receiving processing capability threshold reported by the terminal device.
  • FIG. 7 is a schematic structural diagram of a network device provided by an embodiment of the present invention.
  • the network device 700 includes: a sending module 710, configured to send instruction information to indicate multiple activated TCI states corresponding to CORESET
  • the transmission module 720 is used to transmit downlink control information on the PDCCH according to the activated TCI state of each time-frequency resource in the CORESET; wherein, the activated TCI state of each time-frequency resource in the CORESET is based on a preset
  • the time-frequency resource granularity is determined in the multiple activated TCI states according to a predetermined rule.
  • the sending module 710 is further configured to send first preset signaling, where the first preset signaling carries a first parameter indicating the preset time-frequency resource granularity.
  • the sending module 710 is further configured to send second preset signaling, where the second preset signaling carries a second parameter indicating the predetermined rule.
  • the network device provided by the embodiment of the present invention can implement the various processes implemented by the network device in the foregoing method embodiments of FIG. 2 to FIG. 6 and achieve the same effect. To avoid repetition, details are not described herein again.
  • FIG. 8 is a schematic structural diagram of a terminal device provided by an embodiment of the present invention.
  • the terminal device 800 includes: an acquiring module 810, configured to acquire multiple activated transmission configuration indications corresponding to a control resource set (CORESET) (TCI) status; and a receiving module 820, used for receiving module, used to receive the downlink control information transmitted on the physical downlink control channel (PDCCH) according to the activated TCI status of each time-frequency resource in the CORESET;
  • the activated TCI state of each time-frequency resource in the CORESET is based on a preset time-frequency resource granularity and is determined in the multiple activated TCI states according to a predetermined rule.
  • the preset time-frequency resource granularity includes: frequency domain granularity based on frequency domain division, or time domain granularity based on time domain division.
  • the frequency domain granularity based on frequency domain division includes one of the following:
  • CCE Control Channel Element
  • the time domain granularity based on time domain division includes one of the following:
  • the search space continuously monitors the number of time slots in the search space set
  • the predetermined rule includes:
  • each time-frequency resource of the CORESET is configured with multiple activated TCI states on average.
  • each time-frequency resource of the CORESET averagely configures multiple activated TCI states, including:
  • the first time-frequency resource of the time-frequency resource granularity of the CORESET is the first TCI state among the multiple activated TCI states
  • the second time-frequency resource of the CORESET is the time-frequency resource granularity of the time-frequency resource.
  • the resource is the second TCI state among the multiple activated TCI states
  • the Nth time-frequency resource of the time-frequency resource granularity of the CORESET is the second TCI state among the multiple activated TCI states.
  • the N+1th time-frequency resource of the time-frequency resource granularity of the CORESET is the first TCI state
  • the N+2th time-frequency resource granularity of the CORESET is the time-frequency resource granularity
  • the frequency resource is the second TCI state, and the cycle continues until the last time-frequency resource of the time-frequency resource granularity of the CORESET, where N is the number of the multiple activated TCI states.
  • the receiving module 820 is further configured to receive first preset signaling sent by the network side, where the first preset signaling carries an indication of the preset time-frequency resource granularity The first parameter.
  • the first parameter is empty, it indicates that all the time-frequency resources of the CORESET are configured with all the multiple activated TCI states.
  • the receiving module 820 is further configured to receive second preset signaling sent by the network side, where the second preset signaling carries a second parameter indicating the predetermined rule.
  • the terminal device provided by the embodiment of the present invention can implement each process implemented by the terminal device in each method embodiment of FIG. 2 to FIG. 5, and achieve the same effect. To avoid repetition, details are not described herein again.
  • Fig. 9 is a schematic structural diagram of another terminal device provided by an embodiment of the present invention.
  • the network device 900 includes: a determining module 910, configured to have at least one CORESET in the first CORESET corresponding to multiple passives.
  • the MAC control unit CE of the media access control layer configures multiple code points for the PDSCH, and each of the code points is mapped to a TCI state, if the received downlink control information DCI and PDSCH is If the time offset is less than the receiving processing capability threshold reported by the terminal device, the TCI state or QCL relationship of the received PDSCH is determined in a predetermined manner, wherein the first CORESET is the time closest to the DCI All CORESETs on the BWP of the carrier bandwidth part of the activated serving cell monitored on the slot.
  • the determining module 910 determining the TCI state or QCL relationship of the received PDSCH according to a predetermined manner includes:
  • the TCI state of the target CORESET determine the TCI state and/or QCL relationship of the received PDSCH, where the target CORESET belongs to one of the first CORESETs, and the first CORESET is the monitoring in the time slot All CORESETs on the BWP of the activated carrier bandwidth of the serving cell.
  • the target CORESET includes one of the following:
  • the target CORESET is the CORESET with the smallest CORESET identifier in the first CORESET, wherein only one TCI state is configured in the second CORESET;
  • the target CORESET is the CORESET with the smallest CORESET identifier among the first CORESETs
  • the first CORESET includes at least one third CORESET, the target CORESET is the CORESET with the smallest CORESET identifier in the third CORESET, and the third CORESET is configured with multiple activated TCI states.
  • the determining module 910 determines the TCI state and/or QCL relationship of receiving the PDSCH according to the TCI state of the target CORESET, including:
  • the target CORESET is the CORESET with the smallest CORESET identifier in the second CORESET, it is determined that the TCI state of the received PDSCH and the TCI state of the target CORESET are in a QCL relationship;
  • the target CORESET is the CORESET with the smallest CORESET identifier among the first CORESETs, determining that the TCI state of the received PDSCH and the first TCI state of the target CORESET or the TCI state with the smallest identifier are in a QCL relationship;
  • the target CORESET is the CORESET with the smallest CORESET identifier in the third CORESET, it is determined that the multiple activated TCI states receiving the PDSCH and the multiple activated TCI states of the target CORESET are a one-to-one mapping QCL relationship .
  • the determining module 910 determines the TCI state or QCL relationship of the received PDSCH in a predetermined manner including: determining that the TCI state of the received PDSCH and the TCI state of the target code point are in a QCL relationship, where The target code point is the code point with the smallest index among the multiple code points.
  • the terminal device provided by the embodiment of the present invention can implement each process implemented by the terminal device in the method embodiment of FIG. 6 and achieve the same effect. To avoid repetition, details are not described herein again.
  • Fig. 10 is a block diagram of a terminal device according to another embodiment of the present invention.
  • the terminal device 1000 shown in FIG. 10 includes: at least one processor 1001, a memory 1002, at least one network interface 1004, and a user interface 1003.
  • the various components in the terminal device 1000 are coupled together through the bus system 1005.
  • the bus system 1005 is used to implement connection and communication between these components.
  • the bus system 1005 also includes a power bus, a control bus, and a status signal bus.
  • various buses are marked as the bus system 1005 in FIG. 10.
  • the user interface 1003 may include a display, a keyboard, or a pointing device (for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, etc.).
  • a pointing device for example, a mouse, a trackball (trackball), a touch panel, or a touch screen, etc.
  • the memory 1002 in the embodiment of the present invention may be a volatile memory or a non-volatile memory, or may include both volatile and non-volatile memory.
  • the 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), and electrically available Erase programmable read-only memory (Electrically EPROM, EEPROM) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM), which is used as an external cache.
  • RAM static random access memory
  • DRAM dynamic random access memory
  • DRAM synchronous dynamic random access memory
  • Synchronous DRAM 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
  • Synchronous Link Dynamic Random Access Memory Synchronous Link Dynamic Random Access Memory
  • DRRAM Direct Rambus RAM
  • the memory 1002 of the system and method described in the embodiment of the present invention is intended to include, but is not limited to, these and any other suitable types of memory.
  • the memory 1002 stores the following elements, executable modules or data structures, or a subset of them, or an extended set of them: operating system 10021 and application programs 10022.
  • the operating system 10021 includes various system programs, such as a framework layer, a core library layer, a driver layer, etc., for implementing various basic services and processing hardware-based tasks.
  • the application program 10022 includes various application programs, such as a media player (Media Player), a browser (Browser), etc., which are used to implement various application services.
  • the program for implementing the method of the embodiment of the present invention may be included in the application program 10022.
  • the terminal device 1000 further includes: a computer program that is stored in the memory 1002 and can be run on the processor 1001.
  • the computer program is executed by the processor 1001
  • the following steps are implemented: acquiring the control resource set CORESET corresponding to the Each activated transmission configuration indicates the TCI status; according to the activated TCI status of each time-frequency resource in the CORESET, the downlink control information transmitted on the physical downlink control channel PDCCH is received; wherein, each time-frequency resource in the CORESET is activated
  • the TCI state is based on a preset time-frequency resource granularity, and is determined in the multiple activated TCI states according to a predetermined rule.
  • the MAC control unit CE of the media access control layer configures multiple code points for the PDSCH, and each of the code points is mapped to a TCI state.
  • the TCI status or QCL relationship of the received PDSCH is determined according to a predetermined manner
  • the PDSCH corresponds to the PDSCH
  • the first CORESET is all CORESETs on the BWP of the activated carrier bandwidth of the serving cell monitored on the time slot closest to the DCI.
  • the method disclosed in the foregoing embodiment of the present invention may be applied to the processor 1001 or implemented by the processor 1001.
  • the processor 1001 may be an integrated circuit chip with signal processing capabilities. In the implementation process, the steps of the foregoing method can be completed by an integrated logic circuit of hardware in the processor 1001 or instructions in the form of software.
  • the foregoing processor 1001 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application specific integrated circuit (ASIC), a ready-made programmable gate array (Field Programmable Gate Array, FPGA) or other Programmable logic devices, discrete gates or transistor logic devices, discrete hardware components.
  • DSP Digital Signal Processor
  • ASIC application specific integrated circuit
  • FPGA Field Programmable Gate Array
  • Programmable logic devices discrete gates or transistor logic devices, discrete hardware components.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the steps of the method disclosed in combination with the embodiments of the present invention may be directly embodied as being executed and completed by a hardware decoding processor, or executed and completed by a combination of hardware and software modules in the decoding processor.
  • the software module may be located in a computer-readable storage medium that is mature in the field, such as random access memory, flash memory, read-only memory, programmable read-only memory, or electrically erasable programmable memory, registers.
  • the computer-readable storage medium is located in the memory 1002, and the processor 1001 reads information in the memory 1002, and completes the steps of the foregoing method in combination with its hardware.
  • a computer program is stored on the computer-readable storage medium, and when the computer program is executed by the processor 1001, each step in the above-mentioned method 500 or method 600 is implemented, and the same effect is achieved.
  • the embodiments described in the embodiments of the present invention may be implemented by hardware, software, firmware, middleware, microcode, or a combination thereof.
  • the processing unit can be implemented in one or more application specific integrated circuits (ASIC), digital signal processor (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, and others for performing the functions described in the present invention Electronic unit or its combination.
  • ASIC application specific integrated circuits
  • DSP Digital Signal Processing
  • DSP Device digital signal processing equipment
  • PLD programmable Logic Device
  • PLD Field-Programmable Gate Array
  • FPGA Field-Programmable Gate Array
  • the technology described in the embodiments of the present invention can be implemented by modules (for example, procedures, functions, etc.) that execute the functions described in the embodiments of the present invention.
  • the software codes can be stored in the memory and executed by the processor.
  • the memory can be implemented in the processor or external to the processor.
  • the terminal device 1000 can implement each process implemented by the terminal device in the foregoing method 200 to method 600, and in order to avoid repetition, details are not described herein again.
  • FIG. 11 is a structural diagram of a network device applied in an embodiment of the present invention, which can implement various details in the method 300 and achieve the same effect.
  • the network device 1100 includes: a processor 1101, a transceiver 1102, a memory 1103, a user interface 1104, and a bus interface, where:
  • the network side device 1100 further includes: a computer program that is stored in the memory 1103 and can run on the processor 1101, and the computer program is executed by the processor 1101 to implement the following steps:
  • the activated TCI state is based on a preset time-frequency resource granularity, and is determined among the multiple activated TCI states according to a predetermined rule.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 1101 and various circuits of the memory represented by the memory 1103 are linked together.
  • the bus architecture can also link various other circuits such as peripherals, 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 1102 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on the transmission medium.
  • the user interface 1104 may also be an interface capable of connecting externally and internally with the required equipment.
  • the connected equipment includes but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1101 is responsible for managing the bus architecture and general processing, and the memory 1103 can store data used by the processor 1101 when performing operations.
  • the network device 1100 can implement each process implemented by the network device in the foregoing method 200 to method 600, and achieve the same effect. To avoid repetition, details are not described herein again.
  • the embodiment of the present invention also provides a computer-readable storage medium on which a computer program is stored, and when the computer program is executed by a processor, each process of the foregoing method 200, method 500, or method 600 embodiments is implemented. And can achieve the same technical effect, in order to avoid repetition, I will not repeat them here.
  • the computer-readable storage medium such as read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), magnetic disk, or optical disk, etc.
  • the technical solution of the present invention 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 can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) execute the method described in each embodiment of the present invention.
  • a terminal which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.

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

Abstract

L'invention concerne un procédé de transmission d'informations de commande de liaison descendante, ainsi qu'un dispositif terminal et un dispositif réseau. Le procédé de transmission d'informations de commande de liaison descendante consiste à : acquérir de multiples états d'indication de configuration de transmission (TCI) activés correspondant à un ensemble de ressources de commande (CORESET) ; et recevoir, en fonction des états TCI activés des ressources temps-fréquence respectives dans le CORESET, des informations de commande de liaison descendante transmises sur un canal de commande de liaison descendante physique (PDCCH), les états TCI activés des ressources temps-fréquence respectives dans le CORESET étant déterminés à partir des multiples états TCI activés d'après une granularité de ressource temps-fréquence prédéfinie et selon une règle prédéfinie.
PCT/CN2021/074628 2020-02-13 2021-02-01 Procédé de transmission d'informations de commande de liaison descendante, dispositif terminal et dispositif réseau WO2021159981A1 (fr)

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WO2023151656A1 (fr) * 2022-02-10 2023-08-17 维沃移动通信有限公司 Procédé et appareil de détermination d'état de tci de liaison descendante, terminal et dispositif côté réseau
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WO2024032640A1 (fr) * 2022-08-09 2024-02-15 华为技术有限公司 Procédé de configuration de mode d'indicateur de configuration de transmission (tci), procédé d'indication d'état de tci et appareil

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