WO2021088507A1 - Procédé et appareil de surveillance de pdcch, procédé et appareil d'envoi de pdcch, support d'enregistrement, terminal et station de base - Google Patents

Procédé et appareil de surveillance de pdcch, procédé et appareil d'envoi de pdcch, support d'enregistrement, terminal et station de base Download PDF

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Publication number
WO2021088507A1
WO2021088507A1 PCT/CN2020/114152 CN2020114152W WO2021088507A1 WO 2021088507 A1 WO2021088507 A1 WO 2021088507A1 CN 2020114152 W CN2020114152 W CN 2020114152W WO 2021088507 A1 WO2021088507 A1 WO 2021088507A1
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Prior art keywords
pdcch
repeated
monitoring
ssb
pdcch monitoring
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PCT/CN2020/114152
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English (en)
Chinese (zh)
Inventor
周化雨
潘振岗
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展讯通信（上海）有限公司
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Publication of WO2021088507A1 publication Critical patent/WO2021088507A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • 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
    • H04W72/20—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

Definitions

  • the present invention relates to the field of wireless communication technology, in particular to a PDCCH monitoring and sending method and device, storage medium, terminal, and base station.
  • the 3rd Generation Partnership Project (the 3rd Generation Partnership Project, referred to as 3GPP) standards organization is studying the fifth-generation mobile communications (The Fifth-Generation mobile communications, referred to as 5G) New Radio (referred to as NR, also known as the new air interface) system.
  • the future NR protocol can support narrowband user equipment (User Equipment, UE for short), that is, UE with a bandwidth less than 100 MHz.
  • This type of UE can be used for Internet of Things (Machine Type Communication, MTC for short, or Internet of Things, IoT for short).
  • MTC Internet Type Communication
  • IoT Internet of Things
  • the NR protocol can also be used in licensed high-frequency band scenarios or unlicensed high-frequency band scenarios.
  • the technical problem solved by the present invention is how to optimize the PDCCH monitoring scheme.
  • an embodiment of the present invention provides a PDCCH monitoring method, which includes: monitoring repeated PDCCHs.
  • the monitoring the repeated PDCCH includes: monitoring the repeated PDCCH according to a time period.
  • the time period is a time period of 20 ms.
  • the repeated PDCCH is a repeated SIB1 PDCCH or a repeated RMSI PDCCH.
  • the monitoring the repeated PDCCH includes: monitoring the repeated PDCCH in a time window.
  • the monitoring of the repeated PDCCH in the time window includes: monitoring the repeated PDCCH in the first type of time window; wherein, the first type of time window includes S PDCCH monitoring opportunities, and S is the base station real The number of SSBs sent, S is an integer.
  • the repeated PDCCH is a repeated SIBx PDCCH or a repeated paging PDCCH, where SIBx represents other system information blocks except SIB1.
  • the monitoring the repeated PDCCH includes: monitoring the repeated PDCCH according to the duration of the search space set, and the duration is determined by a duration parameter.
  • the monitoring the repeated PDCCH includes: if the SSB quasi-co-site address associated with the PDCCH monitoring opportunity or the SSB associated with the PDCCH monitoring opportunity are the same, then monitoring the repeated PDCCH at the PDCCH monitoring opportunity.
  • monitoring the repeated PDCCH at the PDCCH monitoring opportunity refers to: if the SSB associated with the PDCCH monitoring opportunity is repeatedly sent, then the PDCCH The monitoring opportunity monitors the repeated PDCCH.
  • the SSB associated with the PDCCH monitoring opportunity refers to the actually sent SSB indicated by the signaling or the non-quasi-co-sited SSB indicated by the signaling.
  • the monitoring repeated PDCCH includes: if multiple SSBs that are not quasi-co-sited form an SSB set, and the SSB set is associated with a PDCCH monitoring timing set, monitoring the repeated PDCCH monitoring timing set; wherein The PDCCH monitoring occasion set is formed by multiple PDCCH monitoring occasions.
  • the SSB in the SSB set refers to a truly transmitted SSB indicated by signaling or a non-quasi co-sited SSB indicated by signaling.
  • an embodiment of the present invention also provides a PDCCH sending method, including: sending repeated PDCCHs.
  • the sending the repeated PDCCH includes: sending the repeated PDCCH according to a time period.
  • the time period is a time period of 20 ms.
  • the repeated PDCCH is a repeated SIB1 PDCCH or a repeated RMSI PDCCH.
  • the sending the repeated PDCCH includes: sending the repeated PDCCH within a time window.
  • the sending of the repeated PDCCH in the time window includes: sending the repeated PDCCH in the first type of time window; wherein, the first type of time window includes S PDCCH monitoring opportunities, and S is the base station real The number of SSBs sent, S is an integer.
  • the repeated PDCCH is SIBx PDCCH or repeated paging PDCCH, where SIBx represents other system information blocks except SIB1.
  • the sending the repeated PDCCH includes: sending the repeated PDCCH according to the duration of the search space set, and the duration is determined by a duration parameter.
  • the sending the repeated PDCCH includes: if the SSB quasi co-site address associated with the PDCCH monitoring opportunity or the SSB associated with the PDCCH monitoring opportunity are the same, then sending the repeated PDCCH at the PDCCH monitoring opportunity.
  • sending the repeated PDCCH at the PDCCH monitoring opportunity refers to: if the SSB associated with the PDCCH monitoring opportunity is repeatedly sent, then the PDCCH The repeated PDCCH is sent at the monitoring time.
  • the SSB associated with the PDCCH monitoring opportunity refers to the actually sent SSB indicated by the signaling or the non-quasi-co-sited SSB indicated by the signaling.
  • the PDCCH sending method includes: if multiple SSBs that are not quasi-co-located form an SSB set, and the SSB set is associated with a PDCCH monitoring time set, repeating the PDCCH monitoring time set; wherein, the The PDCCH monitoring occasion set is formed by multiple PDCCH monitoring occasions.
  • the SSB in the SSB set refers to a truly transmitted SSB indicated by signaling or a non-quasi co-sited SSB indicated by signaling.
  • an embodiment of the present invention also provides a PDCCH monitoring device, which includes a receiving module for monitoring repeated PDCCHs.
  • an embodiment of the present invention also provides a PDCCH sending device, including a sending module, which is used to send repeated PDCCHs.
  • an embodiment of the present invention further provides a storage medium having computer instructions stored thereon, and the computer instructions execute the steps of the above method when the computer instructions are executed.
  • an embodiment of the present invention also provides a terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and when the processor runs the computer instructions Perform the steps of the above method.
  • an embodiment of the present invention also provides a base station, including a memory and a processor, the memory stores computer instructions that can run on the processor, and when the processor runs the computer instructions Perform the steps of the above method.
  • the embodiment of the present invention provides a PDCCH monitoring method, including: monitoring repeated PDCCHs.
  • the base station sends repeated PDCCHs, so that the UE can monitor multiple repeated PDCCHs.
  • the embodiments of the present invention can achieve PDCCH coverage enhancement, which is beneficial to improve the probability of a terminal receiving PDCCH successfully in scenarios such as high-frequency licensed frequency band communication, high-frequency unlicensed frequency band communication, and Internet of Things communication.
  • the monitoring the repeated PDCCH includes: monitoring the repeated PDCCH according to a time period.
  • the base station transmits repeated PDCCHs in multiple cycles, so that the UE can monitor the repeated PDCCHs in multiple cycles.
  • the embodiments of the present invention can achieve PDCCH coverage enhancement, which is beneficial to improve the probability of a terminal receiving PDCCH successfully in scenarios such as high-frequency licensed frequency band communication, high-frequency unlicensed frequency band communication, and Internet of Things communication.
  • the monitoring the repeated PDCCH includes: monitoring the repeated PDCCH in a time window.
  • the monitoring of repeated PDCCHs in a time window includes: monitoring the repeated PDCCHs in a first type of time window; wherein, the first type of time window includes S PDCCH monitoring occasions, and S is actually sent by the base station
  • the number of SSB, S is an integer.
  • the embodiment of the present invention can monitor the repeated PDCCH, realize the coverage enhancement of the PDCCH, and provide more opportunities for successfully receiving the PDCCH.
  • the monitoring the repeated PDCCH includes: monitoring the repeated PDCCH according to the duration of the search space set, and the duration is determined by a duration parameter.
  • the embodiment of the present invention allows monitoring the same PDCCH in the search space set, and provides a feasible solution for PDCCH coverage enhancement.
  • the monitoring the repeated PDCCH includes: if the SSB quasi-co-site associated with the PDCCH monitoring opportunity or the SSB associated with the PDCCH monitoring opportunity are the same, then monitoring the repeated PDCCH at the PDCCH monitoring opportunity.
  • the embodiment of the present invention provides a solution for repeatedly monitoring the same PDCCH under the condition of quasi co-site, thereby achieving PDCCH coverage enhancement.
  • the monitoring repeated PDCCH includes: if multiple SSBs that are not quasi-co-located form an SSB set, and the SSB set is associated with a PDCCH monitoring time set, monitoring the repeated PDCCH monitoring time set; wherein, The PDCCH monitoring occasion set is formed by multiple PDCCH monitoring occasions.
  • multiple PDCCH monitoring occasions can be used to form a PDCCH monitoring timing set, which provides the possibility to monitor repeated PDCCHs, thereby achieving PDCCH coverage enhancement.
  • FIG. 1 is a schematic flowchart of a PDCCH monitoring method according to an embodiment of the present invention
  • FIG. 2 is a schematic flowchart of a PDCCH transmission method according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of signaling interaction in a typical scenario according to an embodiment of the present invention.
  • FIG. 4 is a schematic structural diagram of a PDCCH monitoring device according to an embodiment of the present invention.
  • Fig. 5 is a schematic structural diagram of a PDCCH sending device according to an embodiment of the present invention.
  • the inventor of the present application found that PDCCH coverage needs to be enhanced in some communication scenarios.
  • the control resource set Control Resource Set, CORESET for short
  • the control resource set corresponding to the PDCCH is narrowband. Since there are fewer narrowband CORESET resources, the aggregation level of the PDCCH is limited. Therefore, PDCCH coverage enhancement is required at this time.
  • PDCCH coverage enhancement is required at this time.
  • a high-frequency licensed frequency band communication scenario due to the large signal fading, the signal-to-noise ratio decreases sharply as the distance becomes longer, so PDCCH coverage enhancement is required at this time.
  • the synchronization signal and the broadcast channel form a synchronization signal block, thereby introducing the function of beam sweeping.
  • the user equipment Through the primary synchronization signal (Primary Synchronization Signal, PSS) and SSS secondary synchronization signal (Secondary Synchronization Signal, SSS), the user equipment obtains the time-frequency synchronization of a cell and obtains the physical layer cell ID of the cell. This process is generally called a cell Search (cell search).
  • PSS Primary Synchronization Signal
  • SSS Secondary Synchronization Signal
  • PSS, SSS and physical broadcast channel form a synchronization signal block (SS/PBCH block).
  • Physical Broadcast Channel Physical Broadcast Channel
  • Each synchronization signal block has a predetermined time domain position. This time domain position can also be referred to as a candidate synchronization signal block.
  • Multiple sync signal blocks form a sync signal burst (SS-burst).
  • Multiple sync signal blocks form a sync signal burst.
  • Multiple synchronization signal bursts form a synchronization signal burst set (SS-burst-set).
  • the time domain position of Lmax synchronization signal blocks is fixed within a 5ms window.
  • the time-domain position indexes of the Lmax synchronization signal blocks are arranged consecutively, from 0 to Lmax-1. Therefore, the transmission time of a synchronization signal block in this 5ms window is fixed, and the index is also fixed.
  • the base station uses beam sweeping when sending synchronization signal blocks. That is, the base station transmits synchronization signal blocks at different time domain positions through different beams. Accordingly, the user equipment can measure different beams and sense the Which beam receives the strongest signal.
  • RMSI can also be called SIB1.
  • RMSI is carried in PDSCH, and PDSCH is scheduled through PDCCH.
  • the PDSCH that carries RMSI is generally called RMSI PDSCH, and the PDCCH that schedules RMSI PDSCH is generally called RMSI PDCCH.
  • the search space set (search space set) where the RMSI PDCCH is located is generally called Type0-PDCCH search space set or Type0-PDCCH CSS (Common Search Space) set.
  • the Type0-PDCCH CSS set can be configured by MIB or RRC (in the case of SIB1 reconfiguration or handover).
  • the search space ID of the Type0-PDCCH CSS set can be configured to be 0 (that is, search space 0 or search space set 0), or it can be configured to be non-zero.
  • the ID of the CORESET bound to the Type0-PDCCH CSS set can be configured to be 0 (that is, CORESET0), or it can be configured to be non-zero.
  • other public search spaces or public search space sets include OSI PDCCH search space set (Type0A-PDCCH search space set or Type0A-PDCCH CSS set), RAR PDCCH search space set (Type1- PDCCH search space set or Type1-PDCCH CSS set), paging PDCCH search space set (Type2-PDCCH search space set or Type2-PDCCH CSS set), etc.
  • Their search space ID can be configured to be 0 (that is, search space 0 or search space set 0), or can be configured to be non-zero.
  • the ID of the CORESET to which they are bound can be configured to be 0 (ie CORESET0) or non-zero.
  • the above-mentioned public search space or public search space set can be reconfigured by SIB1.
  • the RMSI PDCCH monitoring timing is related to the synchronization signal block.
  • the UE obtains this association relationship according to the RMSI PDCCH monitoring timing table.
  • the UE searches for a certain synchronization signal block, and the UE determines the time domain position of the RMSI PDCCH associated with the synchronization signal block according to the row index of the table indicated by the PBCH (the starting symbol index or the first symbol index) ), the RMSI PDCCH can be detected, and the RMSI PDSCH can be received and decoded according to the RMSI PDCCH scheduling.
  • the UE decodes the RMSI PDCCH, obtains multiple bits of time domain resource allocation, and searches a predefined table based on these bits to obtain the start symbol index (or number) of the RMSI PDSCH and the symbol length (or duration) (duration)).
  • a search space set includes properties such as PDCCH monitoring timing and search space type.
  • the search space set is generally bound to a control resource set (Control Resource Set, CORESET for short), and CORESET includes properties such as frequency domain resources and duration of the PDCCH.
  • CORESET includes properties such as frequency domain resources and duration of the PDCCH.
  • its corresponding paging occasion (Paging Occasion, PO for short) consists of multiple paging PDCCH monitoring occasions.
  • the paging PDCCH can be sent by sweeping the beam like the synchronization signal block.
  • the paging PDCCH monitoring opportunity corresponds to the synchronization signal block one-to-one, that is, in the PO, the Kth paging PDCCH monitoring opportunity corresponds to the Kth synchronization signal block, and K is a positive integer.
  • the UE is a UE that supports a bandwidth of 100 MHz.
  • the UE When the UE initially accesses, it blindly detects the PSS/SSS/PBCH in the synchronization signal block to obtain the MIB and time index information carried in the PBCH.
  • the UE obtains the CORESET (can be called CORESET0) and search space set (can be called search space set 0) configuration to which the PDCCH scheduling SIB1 (or RMSI) belongs through the information in the MIB, and further, the UE can monitor and schedule the PDSCH carrying SIB1 Type0-PDCCH, and decode SIB1.
  • the maximum bandwidth of CORESET0 is implicitly defined in the protocol. Furthermore, the protocol stipulates that the frequency domain resources of the PDSCH carrying SIB1 are within the bandwidth (PRB) of CORESET0, so the maximum bandwidth of the PDSCH carrying SIB1 is also implicitly defined in the protocol.
  • the embodiment of the present invention provides a PDCCH monitoring method, including: monitoring repeated PDCCHs.
  • the base station sends repeated PDCCHs, so that the UE can monitor multiple repeated PDCCHs.
  • the embodiments of the present invention can achieve PDCCH coverage enhancement, which is beneficial to improve the probability of a terminal receiving PDCCH successfully in scenarios such as high-frequency licensed frequency band communication, high-frequency unlicensed frequency band communication, and Internet of Things communication.
  • the monitoring the repeated PDCCH includes: monitoring the repeated PDCCH according to a time period.
  • the base station transmits the repeated PDCCH according to the time period, so that the UE can monitor the repeated PDCCH according to the time period.
  • the embodiments of the present invention can achieve PDCCH coverage enhancement, which is beneficial to increase the probability of a terminal receiving PDCCH successfully in scenarios such as high-frequency licensed frequency band communication, high-frequency unlicensed frequency band communication, and Internet of Things communication.
  • the technical solutions provided by the embodiments of the present invention are also applicable to different network architectures, including but not limited to a relay network architecture, a dual-link network architecture, and a vehicle networking communication architecture.
  • the base station (Base Station, BS for short) in the embodiment of the present invention may also be referred to as base station equipment, and is a device deployed on a wireless access network to provide wireless communication functions.
  • devices that provide base station functions in a 2G network include a base transceiver station (Base Transceiver Station, BTS for short) and a base station controller (Base Station Controller, BSC for short).
  • BTS Base Transceiver Station
  • BSC Base Station Controller
  • the equipment that provides the base station function in the 3G network includes a NodeB (NodeB) and a Radio Network Controller (Radio Network Controller, RNC for short).
  • the equipment that provides the base station function in the 4G network includes an evolved NodeB (evolved NodeB, eNB for short).
  • a device that provides a base station function is an access point (Access Point, AP for short).
  • the equipment that provides base station functions in 5G New Radio (NR) includes continuously evolving Node B (gNB), and the base station also refers to equipment that provides base station functions in a new communication system in the future.
  • the terminal in the embodiment of the present invention may refer to various forms of user equipment (User Equipment, UE for short), access terminal, user unit, user station, mobile station, mobile station ( Mobile Station, MS for short), remote station, remote terminal, mobile equipment, user terminal, terminal equipment (terminal equipment), wireless communication equipment, user agent or user device.
  • user equipment User Equipment, UE for short
  • access terminal user unit
  • user station mobile station
  • mobile station Mobile Station, MS for short
  • remote station remote terminal
  • mobile equipment user terminal
  • terminal equipment terminal equipment
  • terminal equipment terminal equipment
  • terminal equipment wireless communication equipment
  • the terminal device can also be a cellular phone, a cordless phone, a Session Initiation Protocol (SIP) phone, a wireless local loop (Wireless Local Loop, WLL) station, a personal digital processing (Personal Digital Assistant, PDA), Handheld devices with wireless communication functions, computing devices or other processing devices connected to wireless modems, in-vehicle devices, wearable devices, terminal devices in the future 5G network, or future evolution of the public land mobile network (Public Land Mobile Network, referred to as The terminal equipment in the PLMN) is not limited in the embodiment of the present invention.
  • SIP Session Initiation Protocol
  • WLL Wireless Local Loop
  • PDA Personal Digital Assistant
  • the “plurality” in the embodiments of the present invention refers to two or more than two.
  • connection appearing in the embodiment of the present invention refers to various connection modes such as direct connection or indirect connection to realize communication between devices, which is not limited in the embodiment of the present invention.
  • Fig. 1 is a schematic flowchart of a PDCCH monitoring method according to an embodiment of the present invention.
  • the PDCCH monitoring method may be executed by the UE, for example, executed by the NR UE.
  • the PDCCH monitoring method may include the following steps:
  • Step S101 Monitor the repeated PDCCH.
  • the network-side base station may send repeated PDCCHs to the UE according to a time period.
  • the UE can monitor the repeated PDCCH according to the time period.
  • the UE may no longer monitor repeated PDCCHs in the remaining time period. If the UE monitors the PDCCH in a time period but fails to decode it successfully, the UE can continue to monitor in the remaining time period until the monitoring is completed or the decoding is successful.
  • the base station may send the repeated PDCCH according to a time period.
  • the UE can monitor the repeated PDCCH according to the time period.
  • the repeated PDCCH may be multiple identical PDCCHs used to schedule the UE to receive the PDSCH.
  • the time period may be a time period of 20 ms.
  • the repeated PDCCH may be a repeated SIB1 PDCCH or a repeated RMSI PDCCH.
  • the repeated SIB1 PDCCH refers to multiple identical PDCCHs used to schedule the UE to receive the SIB1 PDSCH.
  • the repeated RMSI PDCCH refers to multiple identical PDCCHs used to schedule the UE to receive the RMSI PDSCH.
  • the base station may send the repeated SIB1 PDCCH every 20 ms SIB1 time period, or send the repeated RMSI PDCCH every 20 ms RMSI time period.
  • the UE may monitor the repeated SIB1 PDCCH every 20ms SIB1 time period or monitor the repeated RMSI PDCCH every 20ms RMSI time period.
  • the base station may send multiple repeated PDCCHs within the first type of time window.
  • the UE can monitor the repeated PDCCH in the first type of time window.
  • the first type of time window includes S PDCCH monitoring opportunities, S is the actual number of SSBs actually delivered by the network side, that is, S is the number of SSBs actually sent by the base station indicated by signaling, and S is an integer.
  • the repeated SIBx PDCCH refers to multiple identical PDCCHs used to schedule the UE to receive the PDSCH.
  • the repeated PDCCH is a repeated SIBx PDCCH or a repeated paging PDCCH.
  • the repeated SIBx PDCCH refers to multiple identical PDCCHs used to schedule the UE to receive the SIBx PDSCH.
  • SIBx represents other system information blocks except SIB1, for example, x is 2, 3, 4, 5, and so on.
  • the repeated paging PDCCH refers to multiple identical PDCCHs used to schedule the UE to receive the paging PDSCH.
  • the base station may send multiple repeated SIBx PDCCHs or multiple repeated paging PDCCHs within the first type of time window.
  • the UE can monitor the repeated SIBx PDCCH or the repeated paging PDCCH in the first type of time window.
  • the first type of time window includes S PDCCH monitoring occasions, S is the number of SSBs actually sent by the base station, and S is an integer.
  • the base station may send repeated PDCCHs for the duration of the search space set.
  • the duration is determined by the duration parameter.
  • the UE can monitor the repeated PDCCH according to the duration of the search space set. The UE may assume that the base station transmits repeated PDDCHs within the duration.
  • the base station may issue multiple identical PDCCHs at the PDCCH monitoring opportunity.
  • the UE may monitor the repeated PDCCH at the PDCCH monitoring occasion.
  • the base station may issue multiple identical PDCCHs at the PDCCH monitoring opportunity.
  • the UE may monitor the repeated PDCCH at the PDCCH monitoring occasion.
  • repeated SSB transmission can be regarded as sending the SSB multiple times using the same beam.
  • the UE when the beam is received repeatedly, if the SSB quasi-co-site address associated with the PDCCH monitoring opportunity or the SSB associated with the PDCCH monitoring opportunity are the same, then the UE can monitor the repeated PDCCH at the PDCCH monitoring opportunity .
  • the SSB associated with the PDCCH monitoring opportunity refers to the actually sent SSB indicated by the signaling or the non-quasi-co-sited SSB indicated by the signaling.
  • the base station may repeatedly send the PDCCH listening occasion set.
  • the repeated sending of the PDCCH monitoring time set may refer to sending the PDCCH monitoring time set in turn.
  • the UE can monitor the repeated PDCCH monitoring occasion set.
  • the PDCCH monitoring occasion set is formed by multiple PDCCH monitoring occasions.
  • the SSB associated with the PDCCH monitoring opportunity refers to the actually sent SSB indicated by the signaling or the non-quasi-co-sited SSB indicated by the signaling.
  • Fig. 2 is a schematic flowchart of a PDCCH transmission method according to an embodiment of the present invention.
  • the PDCCH sending method may be executed by the network side, for example, executed by a 5G NR base station.
  • the PDCCH sending method may include the following steps:
  • Step S201 sending a repeated PDCCH.
  • the base station may repeatedly transmit the same PDCCH according to the time period.
  • the same PDCCH that is repeatedly sent is a repeated PDCCH.
  • the base station may send the repeated PDCCH according to a time period.
  • the time period may be a time period of 20 ms.
  • the repeated PDCCH may be a repeated SIB1 PDCCH or a repeated RMSI PDCCH.
  • the base station may send the repeated SIB1 PDCCH or the repeated RMSI PDCCH every 20 ms SIB1 time period or every 20 ms RMSI time period.
  • the base station may send the repeated PDCCH in the first type of time window; wherein, the first type of time window includes S PDCCH monitoring opportunities, S is the number of SSBs actually sent by the base station, and S Is an integer.
  • the repeated PDCCH is SIBx PDCCH or repeated paging PDCCH.
  • the base station may send the repeated SIBx PDCCH or the repeated paging PDCCH in the first type of time window; wherein, the first type of time window includes S PDCCH monitoring occasions, S is the number of SSBs actually sent by the base station, and S It is an integer; SIBx represents other system information blocks except SIB1.
  • the base station may send the repeated PDCCH according to the duration of the search space set, and the duration is determined by the duration parameter.
  • the base station may send the repeated PDCCH at the PDCCH monitoring opportunity. Or, if the PDCCH monitoring timing and associated SSB are the same, the base station may send the repeated PDCCH at the PDCCH monitoring timing.
  • repeated SSB transmission can be regarded as sending the SSB multiple times using the same beam.
  • the SSB associated with the PDCCH monitoring opportunity refers to the actually sent SSB indicated by the signaling or the non-quasi-co-sited SSB indicated by the signaling.
  • the base station may repeatedly send the PDCCH listening time set; wherein, the PDCCH listening time set It is formed by multiple PDCCH monitoring occasions.
  • the repeatedly sending the set of PDCCH monitoring occasions may refer to sending the set of PDCCH monitoring occasions in turn.
  • the SSB associated with the PDCCH monitoring opportunity refers to the actually sent SSB indicated by the signaling or the non-quasi-co-sited SSB indicated by the signaling.
  • step S201 can be regarded as an execution step corresponding to the step S101 in the embodiment shown in FIG. 1, and the two are complementary to each other in terms of specific implementation principles and logic. Therefore, for the data receiving method on the network side, reference may be made to the related description of the embodiment shown in FIG. 1, which is not repeated here.
  • Embodiment 1 The base station sends the PDCCH according to the time period to send the same PDCCH.
  • the PDCCH may be a broadcast PDCCH.
  • SIB1PDCCH or RMSIPDCCH is repeatedly transmitted in a time period of 20 ms.
  • SIBxPDCCH or paging PDCCH is repeated in the first type of time window, where the first type of time window includes N PDCCH monitoring occasions, and N is the number of SSBs that are actually sent.
  • Embodiment 2 The base station performs PDCCH transmission according to the duration parameter of the search space set.
  • the PDCCH sent by the base station within the duration is repeated.
  • the UE determines the PDCCH transmission duration according to the duration parameter of the search space set, and the PDCCH is repeated within the duration.
  • Embodiment 3 If the SSB associated with the PDCCH monitoring occasion is quasi-co-sited, then the PDCCH sent by the base station is repeated.
  • the base station uses beam repetitive transmission.
  • non-quasi-co-sited SSBs form an SSB set, and the SSB set corresponds to a set of associated PDCCH monitoring occasions, and the set of PDCCH monitoring occasions is repeatedly sent by the base station.
  • the repeatedly sending the set of PDCCH monitoring occasions may refer to sending the set of PDCCH monitoring occasions in turn.
  • the signaling interaction between the user equipment and the base station (for example, the NR base station) using the embodiment of the present invention will be further described below in conjunction with typical application scenarios.
  • Fig. 3 is a schematic diagram of signaling interaction in a typical scenario according to an embodiment of the present invention.
  • base station 1 and terminal 2 may include the following steps for transmitting and receiving repeated PDCCHs:
  • the base station 1 performs operation s1, that is, determines to deliver a repeated PDCCH to the terminal 2. For example, when base station 1 and terminal 2 adopt narrowband communication or high-frequency communication, base station 1 may deliver repeated PDCCH to terminal 2.
  • the base station 1 performs operation s2, that is, sends repeated PDCCHs to the terminal 2 according to the time period.
  • the base station 1 may send the repeated SIB1 PDCCH or the repeated RMSI PDCCH every 20 ms time period or every 20 ms time period.
  • the base station 1 can monitor the repeated SIBx PDCCH or the repeated paging PDCCH in the first type of time window.
  • the first type of time window includes S PDCCH monitoring occasions, S refers to the number of SSBs delivered by the network side, S is an integer, and SIBx represents other system information blocks except SIB1.
  • the base station 1 may also send the repeated PDCCH according to the duration of the search space set, and the duration is determined by the duration parameter.
  • the base station 1 may also send the repeated PDCCH at the PDCCH monitoring opportunity.
  • the base station 1 may repeatedly send the PDCCH listening timing set; wherein, the PDCCH listening timing set is composed of multiple PDCCH monitoring timing is formed.
  • the repeated sending of the PDCCH monitoring time set may refer to sending the PDCCH monitoring time set in turn.
  • the terminal 2 can perform operation s3, that is, monitor the repeated PDCCH. During specific implementation, the terminal 2 may receive one or more of the repeated PDCCHs. Once terminal 2 successfully decodes, terminal 2 can stop receiving the repeated PDCCH.
  • the technical solutions provided by the embodiments of the present invention can achieve PDCCH coverage enhancement, which is beneficial for the UE to successfully receive the PDCCH in different communication scenarios.
  • Fig. 4 is a schematic structural diagram of a PDCCH monitoring device according to an embodiment of the present invention.
  • the PDCCH monitoring device 4 can implement the method and technical solutions shown in FIG. 1 and FIG. 3, and is executed by the UE.
  • the PDCCH monitoring device 4 may include: a monitoring module 401 for monitoring repeated PDCCHs.
  • Fig. 5 is a schematic structural diagram of a PDCCH sending device according to an embodiment of the present invention.
  • the PDCCH sending device 5 can implement the method and technical solutions described in Figs. 2 and 3, and is executed by the base station.
  • the PDCCH sending device 5 may include: a sending module 501, configured to send repeated PDCCHs.
  • the processor may be a central processing unit (Central Processing Unit, CPU for short), and the processor may also be other general-purpose processors or digital signal processors (DSP for short). , Application Specific Integrated Circuit (ASIC for short), Field Programmable Gate Array (FPGA for short) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components, etc.
  • the general-purpose processor may be a microprocessor or the processor may also be any conventional processor or the like.
  • the memory 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 a read-only memory (Read-Only Memory, ROM for short), a programmable read-only memory (Programmable ROM, PROM for short), and an erasable programmable read-only memory (Erasable PROM, EPROM for short). , Electrically Erasable Programmable Read-Only Memory (Electrically EPROM, EEPROM for short) or flash memory.
  • the volatile memory may be a random access memory (Random Access Memory, RAM for short), which is used as an external cache.
  • Random Access Memory Random Access Memory
  • static random access memory SRAM for short
  • dynamic random access memory Dynamic Random Access Memory
  • DRAM synchronous dynamic random access memory
  • SDRAM synchronous dynamic random access memory
  • DDR SDRAM double data rate synchronous dynamic random access memory
  • Enhanced SDRAM ESDRAM for short
  • SLDRAM Synchronous connection to DRAM
  • DR-RAM Direct Rambus RAM
  • the foregoing embodiments may be implemented in whole or in part by software, hardware, firmware or any other combination.
  • the above-mentioned embodiments may be implemented in the form of a computer program product in whole or in part.
  • the computer program product includes one or more computer instructions or computer programs.
  • the computer instructions or computer programs are loaded or executed on the computer, the processes or functions described in the embodiments of the present invention are generated in whole or in part.
  • the computer may be a general-purpose computer, a special-purpose computer, a computer network, or other programmable devices.
  • the computer instructions may be stored in a computer-readable storage medium, or transmitted from one computer-readable storage medium to another computer-readable storage medium.
  • the computer instructions may be transmitted from a website, computer, server, or data center.
  • the computer-readable storage medium may be any available medium that can be accessed by a computer or a data storage device such as a server or a data center that includes one or more sets of available media.
  • the usable medium may be a magnetic medium (for example, a floppy disk, a hard disk, a magnetic tape), an optical medium (for example, a DVD), or a semiconductor medium.
  • the semiconductor medium may be a solid state drive.
  • the size of the sequence numbers of the foregoing processes does not mean the order of execution.
  • the execution order of the processes should be determined by their functions and internal logic, and should not be used in the embodiments of the present invention.
  • the implementation process constitutes any limitation.
  • the disclosed method, device, and system can be implemented in other ways.
  • the device embodiments described above are merely illustrative, for example, the division of the units is only a logical function division, and there may be other divisions in actual implementation, for example, multiple units or components may be combined or It can be integrated into another system, or some features can be ignored or not implemented.
  • the displayed or discussed mutual coupling or direct coupling or communication connection may be indirect coupling or communication connection through some interfaces, devices or units, and may be in electrical, mechanical or other forms.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solutions of the embodiments.
  • the functional units in the various embodiments of the present invention may be integrated into one processing unit, or each unit may be separately physically included, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.
  • the above-mentioned integrated unit implemented in the form of a software functional unit may be stored in a computer readable storage medium.
  • the above-mentioned software function unit is stored in a storage medium, and includes several instructions to enable a computer device (which may be a personal computer, a server, or a network device, etc.) to execute part of the steps of the method described in each embodiment of the present invention.
  • the aforementioned storage media include: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disks or optical disks, etc., which can store program codes. Medium.
  • the embodiment of the present invention also discloses a storage medium on which computer instructions are stored, and when the computer instructions are executed, the method and technical solution described in the embodiment shown in FIG. 1 or in the embodiment shown in FIG. 2 are executed.
  • the storage medium may include a computer-readable storage medium such as a non-volatile memory or a non-transitory memory.
  • the computer-readable storage medium may include ROM, RAM, magnetic disk or optical disk, and so on.
  • an embodiment of the present invention also discloses a terminal, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes the above diagram when the computer instructions are executed. 1 and the technical solution of the method described in the embodiment shown in Fig. 3.
  • the terminal may be an NR UE.
  • an embodiment of the present invention also discloses a base station, including a memory and a processor, the memory stores computer instructions that can run on the processor, and the processor executes the above diagram when the computer instructions are executed. 2 and the technical solution of the method described in the embodiment shown in FIG. 3.
  • the terminal may be an NR UE.

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

Abstract

L'invention concerne un procédé et un appareil de surveillance de PDCCH, un procédé et un appareil d'envoi de PDCCH, un support d'enregistrement, un terminal et une station de base. Le procédé de surveillance de PDCCH comprend la surveillance de PDCCH répétés. Au moyen de la solution technique fournie dans la présente invention, une solution de surveillance PDCCH peut être optimisée, ce qui favorise la réalisation d'une amélioration de la couverture PDCCH.
PCT/CN2020/114152 2019-11-08 2020-09-09 Procédé et appareil de surveillance de pdcch, procédé et appareil d'envoi de pdcch, support d'enregistrement, terminal et station de base WO2021088507A1 (fr)

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CN201911088412.4 2019-11-08

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