WO2022078377A1 - 由用户设备执行的方法以及用户设备 - Google Patents

由用户设备执行的方法以及用户设备 Download PDF

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Publication number
WO2022078377A1
WO2022078377A1 PCT/CN2021/123503 CN2021123503W WO2022078377A1 WO 2022078377 A1 WO2022078377 A1 WO 2022078377A1 CN 2021123503 W CN2021123503 W CN 2021123503W WO 2022078377 A1 WO2022078377 A1 WO 2022078377A1
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WIPO (PCT)
Prior art keywords
bandwidth
pdcch
user equipment
coreset
ssb
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Ceased
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PCT/CN2021/123503
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English (en)
French (fr)
Inventor
马小骏
罗超
刘仁茂
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Sharp Corp
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Sharp Corp
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Priority to US18/031,639 priority Critical patent/US20230388082A1/en
Publication of WO2022078377A1 publication Critical patent/WO2022078377A1/zh
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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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • 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
    • 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 signalling, 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
    • 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
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0014—Carrier regulation
    • H04L2027/0024—Carrier regulation at the receiver end
    • H04L2027/0026—Correction of carrier offset

Definitions

  • the present invention relates to the technical field of wireless communication, and in particular, to a method performed by a user equipment and a corresponding user equipment.
  • enhanced mobile broadband eMBB
  • massive machine-type communication mMTC
  • ultra-reliable and low Delay service Ultra-Reliable and Low Latency communication, URLLC
  • TSC time-sensitive communication
  • 5G connectivity can serve as a catalyst for the next wave of industrial transformation and digitization, enhancing flexibility, increasing productivity and efficiency, reducing maintenance costs, improving operational safety, and more.
  • Devices in this environment include pressure sensors, humidity sensors, thermometers, motion sensors, accelerometers, actuators, and the like. These sensors and actuators need to be connected to the 5G radio access network and core network.
  • Large-scale industrial wireless sensor network (IWSN) use cases and requirements are described in documents such as TR 22.804, which include, in addition to URLLC services with very high demand, relatively low-end services that require smaller size, and/or wireless Years of battery life in state. The requirements for these services are higher than LPWA (Low Power Wide Area Network), but lower than URLCC and eMBB.
  • LPWA Low Power Wide Area Network
  • 5G connectivity can be a catalyst for the next wave of smart city innovation.
  • TSR 22.804 describes smart city use cases and requirements. Smart cities vertically cover data collection and processing, which can more effectively monitor and control urban resources and provide services to urban residents. In particular, the deployment of surveillance cameras is an important part of smart cities, as well as factories and industries.
  • wearable devices include smart watches/rings, eHealth related devices, medical monitoring devices, etc.
  • a feature of this scenario is the compact size of the device required.
  • Device complexity The primary motivation for the new device type is to reduce device cost and complexity compared to eMBB and URLLC devices. This is especially the case with industrial sensors.
  • Deployment scenario The system should support all FR1/FR2 bands for FDD and TDD.
  • Video Surveillance In TSR 22.804, the reference economical video bit rate is 2-4Mbps, the delay is less than 500ms, and the reliability is 99%-99.9%. High-end video, such as agriculture requires 7.5-25Mbps. The business model may be UL transmission dominated.
  • the reference bit rate for smart wearable applications can be 5-50 Mbps, in DL, a minimum of 2-5 Mbps.
  • Devices have higher peak bit rates, say up to 150Mbps downlink, up to 50Mbps uplink.
  • the device's battery should last 1-2 weeks.
  • New demand scenarios place more requirements on network transmission, especially when terminal devices need to obtain business matching under the constraints of smaller size, lower processing complexity, fewer antennas, and smaller bandwidth Therefore, it is necessary to improve the existing air interface resource allocation method and channel transmission method.
  • the present invention provides a method performed by a user equipment and a user equipment.
  • a method performed by a user equipment comprising: determining a position of a receive bandwidth according to a configuration parameter, and receiving a signal within the receive bandwidth, the configuration parameter comprising a bandwidth position of a synchronization system information block (SSB) and / or control the bandwidth location of the resource set CORESET.
  • SSB synchronization system information block
  • the position of the reception bandwidth is determined according to the bandwidth center of the SSB, or the position of the reception bandwidth is determined according to the relative position of the SSB and CORESET.
  • the method performed by the user equipment according to the first aspect of the present invention further comprises: determining the position of the receiving bandwidth according to the SSB subcarrier offset parameter.
  • the position of the received bandwidth is determined according to the bandwidth center of the CORESET.
  • the position of the receiving bandwidth is adjusted so that the position of the receiving bandwidth is the same as that of the CORESET. CORESET overlaps.
  • the UE determines the resource parameters of the first physical downlink control channel PDCCH and the second physical downlink control channel PDCCH, the resource parameters of the first PDCCH and the second PDCCH Different, wherein the resource parameter is one of a control channel element CCE sequence number, a candidate PDCCH sequence number, or a resource element group REG bundle sequence number or a combination thereof, and the UE receives the PDCCH within the reception bandwidth.
  • the first PDCCH and the second PDCCH transmit the same downlink control information DCI content.
  • the resource parameter is determined by the relative position of the CORESET0 where the PDCCH is located and the SSB, and the relative position includes the minimum RB of the CORESET0 and the SSB.
  • the resource parameter is determined by the CORESET bandwidth and the number of symbols of the PDCCH, and the time slot number of the PDCCH.
  • a user equipment includes: a processor; and a memory storing instructions; wherein the instructions, when executed by the processor, perform the method of the above-mentioned first aspect.
  • FIG. 1 is a flowchart illustrating a method performed by a user equipment in Embodiment 1 of the present invention.
  • FIG. 2 shows specific steps of a method executed by a user equipment in Embodiment 1 of the present invention.
  • FIG. 3 is a block diagram showing a user equipment UE according to the present invention.
  • the following uses the 5G/NR mobile communication system and its subsequent evolution versions as an example application environment to specifically describe various embodiments according to the present invention.
  • the present invention is not limited to the following embodiments, but can be applied to more other wireless communication systems, such as communication systems after 5G, 4G mobile communication systems before 5G, 802.11 wireless networks, and the like.
  • LTE Long Term Evolution, long term evolution technology
  • UE User Equipment, user equipment
  • eNB evolved NodeB, evolved base station
  • gNB NR base station
  • kssb SSB subcarrier offset, SSB subcarrier offset
  • TTI Transmission Time Interval, transmission time interval
  • OFDM Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing
  • CP-OFDM Cyclic Prefix Orthogonal Frequency Division Multiplexing, Orthogonal Frequency Division Multiplexing with Cyclic Prefix
  • C-RNTI Cell Radio Network Temporary Identifier, the temporary identifier of the cell wireless network
  • CSI Channel State Information, channel state information
  • CSI-RS Channel State Information Reference Signal, channel state information reference signal
  • CRS Cell Reference Signal, cell-specific reference signal
  • PBCH Physical broadcast channel, physical broadcast channel
  • PUCCH Physical Uplink Control Channel, physical uplink control channel
  • PUSCH Physical Uplink Shared Channel, physical uplink shared channel
  • PRACH Physical random-access channel, physical random access channel
  • PDSCH Physical downlink shared channel, physical downlink shared channel
  • PDCCH Physical downlink control channel, physical downlink control channel
  • UL-SCH Uplink Shared Channel, uplink shared channel
  • DL-SCH Downlink Shared Channel, uplink shared channel
  • RACH random-access channel, random access channel
  • DCI Downlink Control Information, downlink control information
  • MCS Modulation and Coding Scheme, modulation and coding scheme
  • RB Resource Block, resource block
  • CRB Common Resource Block, common resource block
  • CP Cyclic Prefix, cyclic prefix
  • PRB Physical Resource Block, physical resource block
  • VRB Virtual resource block, virtual resource block
  • FDM Frequency Division Multiplexing, frequency division multiplexing
  • TDD Time Division Duplexing
  • FDD Frequency Division Duplexing, frequency division duplexing
  • RRC Radio Resource Control
  • RSRP Reference Signal Receiving Power
  • SRS Sounding Reference Signal
  • DMRS Demodulation Reference Signal, demodulation reference signal
  • CSI-RS Channel state information reference signal
  • CRC Cyclic Redundancy Check, Cyclic Redundancy Check
  • SIB system information block, system information block
  • SIB1 System Information Block Type 1, system information block type 1
  • PSS Primary Synchronization Signal, the main synchronization signal
  • SSS Secondary Synchronization Signal, secondary synchronization signal
  • SSB Synchronization Signal Block, synchronization system information block
  • CRB Common resource block, common resource block
  • BWP BandWidth Part, Bandwidth Fragment/Part
  • SFN System Frame Number, system (wireless) frame number
  • PCI Physical Cell ID, physical cell identification
  • EN-DC EUTRA-NR Dual Connection, LTE-NR dual connection
  • MCG Master Cell Group, the main cell group
  • SCG Secondary Cell Group, secondary cell group
  • PCell Primary Cell, the main cell
  • SCell Secondary Cell, secondary cell
  • SPS Semi-Persistant Scheduling, semi-static scheduling
  • PT-RS Phase-Tracking Reference Signals, phase tracking reference signal
  • Transport Block transport block
  • TBS Transport Block Size, transport block size
  • CB Code Block, coding block/code block
  • QPSK Quadrature Phase Shift Keying, quadrature phase shift keying
  • 16/64/256 QAM 16/64/256 Quadrature Amplitude Modulation, Quadrature Amplitude Modulation
  • AGC Auto Gain Control, automatic gain control
  • ARFCN Absolute Radio Frequency Channel Number, absolute radio frequency channel number
  • CCE Control channel element, control channel element
  • MIB Master Information Block, the main information block
  • UCI Uplink Control Information, uplink control information
  • SCS sub-carrier spacing, sub-carrier spacing
  • RIV Resource indicator value, resource indicator value
  • SS-RSRP Synchronization Signal Reference Signal Received Power, synchronization reference signal received power
  • SS-RSRQ Synchronization Signal Reference Signal Received Quality, synchronization reference signal received quality
  • FR1 Frequency range 1 as defined in TS 38.104, frequency range 1 defined by TS38.104
  • FR2 Frequency range 2 as defined in TS 38.104, frequency range 2 defined by TS38.104
  • a network device is a device that communicates with a terminal, including but not limited to base station devices, gNBs, eNBs, wireless APs, etc., which will not be specifically distinguished and limited in the following.
  • the network device can indicate the behavior of the terminal by sending DCI information to the terminal.
  • the network device can use DCI format 0_0/0_1/0_2 to schedule uplink data transmission, and can also use DCI format 1_0/1_1/1_2 and other formats to perform downlink data.
  • DCI format2_0/2_1/.../2_6, etc., and DCI format3_0/3_1, etc. may also be used to indicate other data transmission or control messages.
  • the DCI message includes but is not limited to the specific types mentioned above, and may be extended or changed, but does not affect the implementation of the method involved in the present invention.
  • DCI information is transmitted using the PDCCH channel.
  • the terminal receives the PDCCH, decodes the corresponding DCI, and performs data transmission according to the indication of the DCI.
  • a unit of time-frequency resources in NR is a time slot, and a time slot contains 14 (Normal CP scenario) or 12 (Extended CP scenario) OFDM symbols.
  • the resources within a time slot can be further divided into resource blocks and resource units.
  • the resource block RB can be defined in the frequency domain as consecutive sub-carriers, eg for a sub-carrier spacing (SCS) of 15 kHz, the RB is 180 kHz in the frequency domain.
  • SCS sub-carrier spacing
  • the resource element RE represents 1 subcarrier in the frequency domain and 1 OFDM symbol in the time domain.
  • ⁇ can take an integer value from 0 to 4 under different configurations.
  • Several REs can form REG bundles according to certain configurations and rules, and the REG bundles are then mapped to CCEs for PDCCH transmission.
  • the resources of the PDCCH can be determined by CORESET0 and the search space parameters, and the terminal can determine the specific location of the time-frequency resources used by the PDCCH according to the CORESET0 and the search space parameters.
  • the terminal can determine the CORESET0 and the search space using a certain AL by receiving the configuration or predefined parameters according to certain rules.
  • the time-frequency resource position of a certain candidate PDCCH for example, the terminal may determine that AL consecutive CCEs starting from a certain CCE sequence number are a PDCCH candidate position.
  • the terminal performs DCI information detection on the candidate PDCCH.
  • the network equipment sends SSB information, including PSS, SSS and PBCH signals, etc., for the terminal to perform cell search, synchronization, and access.
  • the terminal can detect the SSB on the frequency band according to the predetermined rules and parameters, determine the bandwidth, location, subcarrier spacing and other parameters of the SSB, and receive related signals.
  • the PBCH indicates several parameters for the terminal to access the network, such as CORESET0 parameters, etc.
  • the terminal can perform further processing according to the configuration parameters of the network, such as receiving PDCCH and PDSCH.
  • the bandwidth used by CORESET0 configured by the network may exceed the receiving capability of the terminal, and the terminal can only receive signals on part of the bandwidth, resulting in loss of reception performance or inability to detect signals correctly.
  • the present invention enables the terminal to receive signals on part of the bandwidth, for example, to receive multiple PDCCHs and correspond to the relevant DCI content, so as to enhance the terminal's receiving capability, thereby improving the system's communication capability.
  • FIG. 1 is a schematic block diagram illustrating the method performed by the user equipment of the present invention.
  • the network device sends a PBCH signal on the frequency band, and broadcasts parameters such as the access configuration of the cell.
  • the terminal device determines the position of the received bandwidth according to the obtained bandwidth position of the synchronization system information block SSB and/or the bandwidth position of the control resource set CORESET.
  • the terminal receives the signal within the determined reception bandwidth.
  • the terminal can determine the channel resource location required to access the cell according to the access configuration parameters and predefined parameters. For example, the terminal can use the CORESET0 for transmitting type0-PDCCH and the configuration parameters of the search space, including bandwidth, time-frequency location, etc.
  • the terminal can determine the time-frequency resource location of the type0-PDCCH, perform type0-PDCCH detection, and receive the SIB1 message according to the detection result.
  • the terminal determines the receiving bandwidth position according to the configuration of the SSB and/or CORESET0.
  • the terminal does not receive signals outside the determined bandwidth location. For example, when CORESET0 is configured with a larger bandwidth, part of the frequency domain resources of CORESET0 may exceed the position of the receiving bandwidth determined by the terminal, and the terminal does not receive this part of the signal.
  • the terminal determines the receiving bandwidth position according to the bandwidth center of the SSB.
  • the terminal takes the bandwidth center of the SSB as the reference point, and determines the 1/2 bandwidth capability on both sides of the reference point as the received bandwidth position. For example, taking the SCS used by the SSB as a unit, and the SSB in the NR occupies a bandwidth of 240 subcarriers, the terminal can determine that the 120th subcarrier is the center position of the SSB bandwidth. For example, if the terminal supports a bandwidth of 50MHz, the terminal takes the center of the SSB bandwidth as the reference point, and determines 25MHz on both sides as the receiving bandwidth position.
  • the receiving bandwidth takes the RB determined by the SCS of CORESET0 as the unit.
  • a 30KHz SCS can determine 51 RBs within a 20M bandwidth, and the terminal determines 25.5 RBs on both sides of the reference point as the receiving bandwidth.
  • the SCS of 120KHz can determine 32 RBs in the bandwidth of 50M, and the terminal determines 16 RBs on both sides of the reference point as the receiving bandwidth.
  • the terminal determines an integer multiple of RBs on both sides of the reference point as the receiving bandwidth.
  • the number of RBs supported by the terminal's receiving bandwidth under a certain SCS is N
  • the terminal determines that f(N/2) and N-f(N/2) RBs on both sides of the reference point are the receiving bandwidth.
  • f(x) is some kind of operation, such as round up or round down.
  • the terminal determines the receiving bandwidth according to the bandwidth center of the SSB and the SSB subcarrier offset parameter.
  • the terminal takes the bandwidth center of the SSB as the reference point, and adjusts the reference point to be aligned to the subcarrier 0 position of the CRB according to the SSB subcarrier offset parameter kssb indicated by the PBCH.
  • kssb indicates a value from 0-23 and is in units of SCS of 15kHz.
  • the terminal will offset the reference point position determined by the SSB center frequency point downward by kssb units to align the reference point to the position of subcarrier 0 of the CRB, and use the reference point to determine the terminal's receiving bandwidth position.
  • the terminal determines the frequency range or RB range of the receiving bandwidth according to the position of the reference point.
  • the terminal uses the bandwidth center of the CORESET as a reference point to determine the receiving bandwidth position. For example, the terminal determines the offset of the minimum RB of CORESET0 to the minimum RB of SSB according to the CORESET0 parameter configured on the PBCH, and determines the position of the subcarrier 0 of the minimum RB according to the kssb parameter indicated by the PBCH.
  • the terminal can determine the starting position and bandwidth of the CORESET0 according to the received configuration of the CORESET0, and determine the center of the CORESET0 as the reference point.
  • the terminal determines the 1/2 bandwidth capability on both sides of the reference point as the receiving bandwidth position.
  • the reception bandwidth may be in units of RBs determined by the SCS of CORESET0. For example, a 30KHz SCS can determine 51 RBs within a 20M bandwidth, and the terminal determines 25.5 RBs on both sides of the reference point as the receiving bandwidth.
  • the terminal may adjust the position of the receiving bandwidth so that the position of the receiving bandwidth overlaps with the CORESET.
  • the offset of RB0 of CORESET0 relative to RB0 of SSB is 4 RBs
  • the offset of RB0 of the determined bandwidth position relative to RB0 of SSB is 10 RBs
  • RB0-RB5 of the bandwidth position does not overlap with CORESET0.
  • the terminal adjusts the receiving bandwidth position, and aligns the bandwidth RB0 to the RB0 position of CORESET0.
  • the terminal determines different receiving bandwidth positions in different time slots.
  • the terminal determines to receive the signal at the first receiving bandwidth position in the first time slot, and receive the signal at the second receiving bandwidth position in the second time slot.
  • the terminal determines that the first time slot uses the subcarrier 0 of the minimum RB of CORESET0 to the reference point as the first receiving bandwidth, and the terminal determines that the second time slot uses the reference point to the subcarrier 11 of the largest RB of CORESET0 as the second receiving bandwidth. .
  • the above embodiments support scenarios in which the CORESET and the SSB use the same or different SCSs. If there is no special specification, the relevant calculation can be performed in the unit of the SCS of CORESET and the defined RB.
  • FIG. 2 shows the specific steps of the method performed by the user equipment of the present invention.
  • the terminal determines the position of the receiving bandwidth
  • the terminal determines the time-frequency parameter of the first PDCCH according to the configuration
  • the terminal determines the second PDCCH time-frequency parameter according to the configuration
  • the terminal determines that the first PDCCH and the second PDCCH transmit the same DCI
  • the network device indicates through RRC signaling parameters such as the bandwidth and the number of symbols, the time-frequency position and other parameters of the CORESET used for the terminal device to receive the common search space of the PDCCH.
  • the terminal device determines the reception parameters of the PDCCH according to the configuration parameters.
  • the terminal determines parameters such as the symbol position of the first PDCCH, the CCE sequence number and other parameters according to the configuration parameters, and uses the first time-frequency resource to receive the PDCCH signal. Specifically, the terminal determines parameters such as the number of the relevant REG bundle, the mapping of the REG to the CCE, and the CCE sequence number corresponding to the PDCCH of different aggregation levels on the configured symbol and bandwidth according to the configured parameters. According to the determined parameters, the terminal receives the PDCCH signal at the position of the first time-frequency resource within the receiving bandwidth, and the first time-frequency resource is the CCE set corresponding to the PDCCH of one aggregation level determined at the position of the first PDCCH symbol .
  • the terminal determines parameters such as the symbol position of the second PDCCH, the CCE sequence number and other parameters according to the configuration, and uses the second time-frequency resource to receive the PDCCH signal. Specifically, the terminal determines parameters such as the number of the relevant REG bundle, the mapping of the REG to the CCE, and the CCE sequence number corresponding to the PDCCH of different aggregation levels on the configured symbol and bandwidth according to the configured parameters. According to the determined parameters, the terminal receives the PDCCH signal at the position of the second time-frequency resource within the receiving bandwidth, and the second time-frequency resource is the CCE set corresponding to the PDCCH of one aggregation level determined at the position of the second PDCCH symbol .
  • the first PDCCH and the second PDCCH use different reception bandwidths.
  • the terminal determines to use the first reception bandwidth of the first time slot to receive the first PDCCH, and to use the second reception bandwidth of the second time slot to receive the second PDCCH.
  • the terminal determines the slot positions of the first PDCCH and the second PDCCH according to the SSB index, and the first PDCCH is associated with the slot n0 of the SSB index i.
  • the second PDCCH is associated with slot n0+1 of SSB index i.
  • the terminal determines the time slot positions of the first PDCCH and the second PDCCH according to signaling sent by the network. For example, the network instructs different monitoring opportunities within one search space period to transmit the first PDCCH and the second PDCCH respectively.
  • the terminal determines the candidate resource location of the PDCCH according to the CORESET location and the SSB location configured by the network.
  • PDCCH has one or more candidate positions in CORESET.
  • the terminal determines the resource index corresponding to each candidate location, such as REG bundle sequence number, CCE sequence number, etc.
  • the terminal determines the parameters of the first candidate position according to the relative position of the CORESET and the SSB.
  • the relative position is the relative position of the minimum RB sequence number of the SSB and the minimum RB sequence number of the CORESET.
  • the relative position is the relative position of the SSB reference point and the CORESET minimum RB sequence number.
  • the relative position is the distance between the SSB reference point and the CORESET reference point, and the reference point may be determined in combination with the previous embodiment.
  • the terminal determines the mapping of the REG bundle to the CCE according to the relative position.
  • the terminal determines the number of the REG bundle and the time-frequency resource corresponding to each REG bundle, and performs the mapping from the REG bundle to the CCE according to the mapping rule.
  • the terminal may perform the mapping from the CCE sequence number x to the REG bundle sequence number f(x) according to the formula.
  • the number of REGs used for the CORESET. is the cell ID.
  • K is the relative position value of CORESET and SSB.
  • n0 is the slot number where the first PDCCH is located.
  • the terminal may determine the CCE sequence number used by the PDCCH according to the relative position.
  • the terminal determines the CCE sequence number used by the PDCCH of the aggregation level L according to the formula
  • L is the aggregation level used by PDCCH
  • L is the candidate PDCCH sequence number at the L aggregation level.
  • n CI is the carrier sequence number, which is 0 here.
  • N CCE, p is the number of CCEs used by CORESET p. Number of symbols used for CORESET.
  • K is the relative position value.
  • n0 is the slot number where the first PDCCH is located. i takes the value 0-L-1.
  • the terminal determines the CCE sequence number used by the PDCCH according to the bandwidth of the CORESET and the aggregation level parameter to be detected.
  • the terminal determines the CCE sequence number used by the PDCCH according to the formula
  • L is the aggregation level used by PDCCH
  • L aggregation level used by PDCCH is the candidate PDCCH sequence number at the L aggregation level.
  • n CI is the carrier sequence number, which is 0 here.
  • N CCE, p is the number of CCEs used by CORESET p. Number of symbols used for CORESET.
  • K is the relative position value of CORESET0 and SSB.
  • n0 is the slot number where the first PDCCH is located. i takes the value 0-L-1.
  • the terminal determines that the first PDCCH and the second PDCCH transmit the same DCI content.
  • the terminal determines that the first PDCCH and the second PDCCH transmit the same DCI content according to a predefined rule. For example, when the network sends a CORESET0 configuration larger than the minimum supported bandwidth, the terminal determines that the first PDCCH and the second PDCCH transmit the same DCI content.
  • the terminal determines according to the detection that the first PDCCH and the second PDCCH transmit the same DCI content. For example, the terminal can perform blind detection on PDCCH candidate positions at the same aggregation level.
  • the terminal determines that the first PDCCH and the second PDCCH transmit the same DCI content.
  • the terminal may determine, according to the indication information, that the first PDCCH and the second PDCCH transmit the same DCI content.
  • the terminal determines that the first PDCCH and the second PDCCH transmit the same DCI content according to the RRC signaling, DCI signaling, or MAC-CE signaling, etc. sent by the network.
  • the terminal receives the first PDCCH and the second PDCCH, obtains the DCI transmitted by the PDCCH, and performs PDSCH reception according to the configuration indicated in the DCI.
  • the network device configures the public search space parameters through RRC signaling such as SIB1, and the terminal determines the time-frequency resource configuration related to the CORESET to be detected and the search space according to the configuration parameters.
  • the terminal performs PDCCH detection on the determined resource, and can receive PDSCH/Msg4 according to the detection result.
  • the terminal may define the configuration of the first PDCCH and the second PDCCH by the RRC configuration parameter according to the bandwidth and the number of symbols indicated by the CORESET in the RRC/SIB.
  • the network configures the parameters of the first PDCCH and the second PDCCH through RRC parameters.
  • the network configures the offset of the REG bundle sequence numbers used by the first PDCCH and the second PDCCH.
  • the terminal determines the REG bundle sequence numbers corresponding to the CCEs used by the first PDCCH and the second PDCCH according to the configuration, and determines the first PDCCH and the second PDCCH.
  • the time-frequency resources used is used.
  • the network configures the offset or relative relationship of CCEs used by the first PDCCH and the second PDCCH, and the terminal determines the time-frequency resources used by the first PDCCH and the second PDCCH according to the configuration values.
  • FIG. 3 is used to illustrate a user equipment that can execute the method performed by the user equipment described in detail above in the present invention as a modification.
  • FIG. 3 is a block diagram showing a user equipment UE according to the present invention.
  • the user equipment UE50 includes a processor 501 and a memory 502 .
  • the processor 501 may include, for example, a microprocessor, a microcontroller, an embedded processor, or the like.
  • the memory 502 may include, for example, volatile memory (eg, random access memory RAM), a hard disk drive (HDD), non-volatile memory (eg, flash memory), or other memory, or the like.
  • the memory 502 has program instructions stored thereon. When the instructions are executed by the processor 501, the above-mentioned method described in detail in the present invention and executed by the user equipment can be executed.
  • the method and related apparatus of the present invention have been described above with reference to the preferred embodiments. Those skilled in the art can understand that the methods shown above are only exemplary, and the various embodiments described above can be combined with each other under the condition that no contradiction occurs.
  • the method of the present invention is not limited to the steps and sequences shown above.
  • the network node and user equipment shown above may include more modules, for example, may also include modules that can be developed or developed in the future and can be used for base stations, MMEs, or UEs, and so on.
  • the various identifiers shown above are only exemplary and not restrictive, and the present invention is not limited to the specific information elements exemplified by these identifiers. Numerous changes and modifications may occur to those skilled in the art in light of the teachings of the illustrated embodiments.
  • the above-described embodiments of the present invention may be implemented by software, hardware, or a combination of both.
  • the various components inside the base station and the user equipment in the above embodiments may be implemented by various devices, including but not limited to: analog circuit devices, digital circuit devices, digital signal processing (DSP) circuits, programmable processing Controllers, Application Specific Integrated Circuits (ASICs), Field Programmable Gate Arrays (FPGAs), Programmable Logic Devices (CPLDs), etc.
  • DSP digital signal processing
  • ASICs Application Specific Integrated Circuits
  • FPGAs Field Programmable Gate Arrays
  • CPLDs Programmable Logic Devices
  • base station may refer to a mobile communication data and control switching center with larger transmission power and wider coverage area, including functions such as resource allocation and scheduling, data reception and transmission, and the like.
  • User equipment may refer to a user mobile terminal, for example, including a mobile phone, a notebook, and other terminal equipment that can wirelessly communicate with a base station or a micro base station.
  • embodiments of the invention disclosed herein may be implemented on a computer program product.
  • the computer program product is a product having a computer-readable medium on which computer program logic is encoded that, when executed on a computing device, provides relevant operations to achieve The above technical solutions of the present invention.
  • computer program logic When executed on at least one processor of a computing system, computer program logic causes the processor to perform the operations (methods) described in the embodiments of the present invention.
  • Such arrangements of the present invention are typically provided as software, code and/or other data structures arranged or encoded on a computer readable medium such as an optical medium (eg CD-ROM), floppy or hard disk, or such as one or more Firmware or other medium of microcode on a ROM or RAM or PROM chip, or a downloadable software image in one or more modules, a shared database, etc.
  • Software or firmware or such a configuration may be installed on a computing device, so that one or more processors in the computing device execute the technical solutions described in the embodiments of the present invention.
  • each functional module or each feature of the base station device and the terminal device used in each of the above embodiments may be implemented or executed by a circuit, which is usually one or more integrated circuits.
  • Circuits designed to perform the various functions described in this specification may include general purpose processors, digital signal processors (DSPs), application specific integrated circuits (ASICs) or general purpose integrated circuits, field programmable gate arrays (FPGAs) or other Program logic devices, discrete gate or transistor logic, or discrete hardware components, or any combination of the above.
  • a general-purpose processor may be a microprocessor, or the processor may be an existing processor, controller, microcontroller, or state machine.
  • the general-purpose processor or each circuit described above may be configured by digital circuits, or may be configured by logic circuits.
  • the present invention can also use the integrated circuit obtained by using the advanced technology.

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Abstract

本发明提出了一种由用户设备UE执行的方法，所述方法包括：根据配置参数确定接收带宽的位置；和在所述接收带宽内接收信号，所述配置参数包括同步系统信息块SSB的带宽位置和/或控制资源集合CORESET的带宽位置。

Description

由用户设备执行的方法以及用户设备 技术领域
本发明涉及无线通信技术领域，具体涉及由用户设备执行的方法以及相应的用户设备。
背景技术
现有的5G/NR网络中，定义了三种典型的业务模型，增强移动宽带业务(enhanced mobile broadband，eMBB)，海量机器类型通信业务(massive machine-type communication，mMTC)以及超可靠性及低时延业务(Ultra-Reliable and Low Latency communication，URLLC)。除了这几种还有时间敏感业务(time sensitive communication，TSC)等。
5G的一个重要目标是实现互联产业。5G互联可以作为下一波产业变革和数字化的催化剂，可以增强灵活性，提高生产率和效率，降低维护成本，提高运行安全性等。在这种环境中的装置包括压力传感器、湿度传感器、温度计、运动传感器、加速度计、执行器等。需要将这些传感器和执行器连接到5G无线接入网络和核心网络。TR 22.804等文献中描述了大规模的工业无线传感器网络(IWSN)用例和需求，除了包含具有非常高的需求URLLC业务之外，也包含需求较小尺寸的相对低端的服务，和/或无线状态下数年的电池寿命。对这些服务的要求高于LPWA(Low Power Wide Area Network)，但低于URLCC和eMBB。
与互联网行业相似，5G互联互通可以成为下一波智能城市创新的催化剂。作为一个例子，TSR 22.804描述了智能城市用例和需求。智能城市垂直覆盖数据收集和处理，可以更有效地监测和控制城市资源，并为城市居民提供服务。特别是监控摄像头的部署是智能城市的重要组成部分，也是工厂和行业的重要组成部分。
最后，可穿戴设备的实例包括智能手表/环、eHealth相关设备、医疗 监测设备等。这种场景的一个特点是要求设备大小紧凑。
作为基线，这三个用例的需求是：
一般要求：
·设备复杂性：新设备类型的主要动机是相比eMBB和URLLC设备降低设备成本和复杂性。尤其是工业传感器的情况。
·设备尺寸：大多数用例的要求设备设计紧凑。
·部署场景：系统应该支持FDD和TDD的所有FR1/FR2波段。
用例具体要求：
·工业无线传感器：在TR 22.832和TS 22.104中描述引用用例和要求：通信服务可用性是99.99％，端到端延迟小于100毫秒。参考比特率小于2Mbps(可能不对称，比如上行重载)，对于所有用例和设备是平稳的。电池应该持续至少几年。对于安全相关的传感器，延迟要求较低，5-10ms(TR 22.804)
·视频监控：在TSR 22.804中，参考经济视频比特速率为2-4Mbps，延迟小于500ms，可靠性99％-99.9％。高端视频，例如农业需要7.5-25Mbps。业务模式可能是UL传输为主的。
·可佩戴设备：智能可佩戴应用的参考比特率可以是5-50Mbps，在DL中，最小2-5Mbps。设备的峰值比特率更高，比如高达150Mbps的下行链路，高达50Mbps的上行链路。该设备的电池应持续1-2周。
新需求场景对网络传输提出了更多的要求，尤其是在终端设备需要在更小的体积，更低的处理复杂度，更少的天线数以及更小的带宽等约束条件下获得和业务匹配的接收能力，这些都需要对现有的空口的资源配置方法以及信道传输的方法进行改进。
发明内容
为了解决上述问题中的至少一部分，本发明提供了一种由用户设备执行的方法以及用户设备。
根据本发明的第一方面的由用户设备执行的方法，包括：根据配置参数确定接收带宽的位置；和在所述接收带宽内接收信号，所述配置参 数包括同步系统信息块SSB的带宽位置和/或控制资源集合CORESET的带宽位置。
根据本发明的第一方面的由用户设备执行的方法，根据所述SSB的带宽中心确定所述接收带宽的位置，或者根据所述SSB和CORESET的相对位置确定所述接收带宽的位置。
根据本发明的第一方面的由用户设备执行的方法，还包括：根据SSB子载波偏移参数确定所述接收带宽的位置。
根据本发明的第一方面的由用户设备执行的方法，根据所述CORESET的带宽中心确定所述接收带宽的位置。
根据本发明的第一方面的由用户设备执行的方法，当确定的所述接收带宽与所述CORESET的带宽不重叠时，调整所述接收带宽的位置，使得所述接收带宽的位置与所述CORESET重叠。
根据本发明的第一方面的由用户设备执行的方法，所述UE确定第一物理下行控制信道PDCCH和第二物理下行控制信道PDCCH的资源参数，所述第一PDCCH和第二PDCCH的资源参数不同，其中，所述资源参数为控制信道单元CCE序号或候选PDCCH序号或资源单元组REG bundle序号中的一种或其组合，所述UE接收接收带宽内的所述PDCCH。
根据本发明的第一方面的由用户设备执行的方法，所述第一PDCCH和所述第二PDCCH传输相同的下行控制信息DCI内容。
根据本发明的第一方面的由用户设备执行的方法，所述资源参数由所述PDCCH所在的所述CORESET0与所述SSB的相对位置确定，所述相对位置包括所述CORESET0的最小RB与所述SSB最小RB的偏移或所述CORESET的带宽中心与所述SSB带宽中心的偏移。。
根据本发明的第一方面的由用户设备执行的方法，所述资源参数由所述PDCCH的所述CORESET带宽和符号数，所述PDCCH的时隙号确定。
根据本发明的第二方面的用户设备，包括：处理器；以及存储器，存储有指令；其中，所述指令在由所述处理器运行时执行上述第一方面的所述方法。
附图说明
通过下文结合附图的详细描述，本发明的上述和其它特征将会变得更加明显，其中：
图1是示出了本发明的实施例一中由用户设备执行的方法的流程图。
图2是示出了本发明的实施例一中由用户设备执行的方法的具体步骤。
图3是表示本发明所涉及的用户设备UE的框图。
具体实施方式
下面结合附图和具体实施方式对本发明进行详细阐述。应当注意，本发明不应局限于下文所述的具体实施方式，这些实施方式仅作为示例提供，以将主题的范围传达给本领域技术人员。另外，为了简便起见，省略了对与本发明没有直接关联的公知技术的详细描述，以防止对本发明的理解造成混淆。
通常，除非在使用该术语的上下文中清楚地给出和/或隐含不同的含义，否则本文中使用的所有术语将根据其在相关技术领域中的普通含义来解释。除非明确说明，否则对一/一个/该元件、设备、组件、部件、步骤等的所有引用应公开地解释为是指该元件、装置、组件、部件、步骤等的至少一个实例。除非必须明确地将一个步骤描述为在另一个步骤之后或之前和/或隐含地一个步骤必须在另一个步骤之后或之前，否则本文所公开的任何方法的步骤不必以所公开的确切顺序执行。在适当的情况下，本文公开的任何实施例的任何特征可以适用于任何其它实施例。同样，任何实施例的任何优点可以适用于任何其它实施例，反之亦然。
下文以5G/NR移动通信系统及其后续的演进版本作为示例应用环 境，具体描述了根据本发明的多个实施方式。然而，需要指出的是，本发明不限于以下实施方式，而是可适用于更多其它的无线通信系统，例如5G之后的通信系统以及5G之前的4G移动通信系统，802.11无线网络等。
下面描述本发明涉及的部分术语，如未特别说明，本发明涉及的术语采用此处定义。本发明给出的术语在LTE、LTE-Advanced、LTE-Advanced Pro、NR以及之后的或其他的通信系统中可能采用不同的命名方式，但本发明中采用统一的术语，在应用到具体的系统中时，可以替换为相应系统中采用的术语。
3GPP：3rd Generation Partnership Project，第三代合作伙伴计划
LTE：Long Term Evolution，长期演进技术
NR：New Radio，新无线、新空口
UE：User Equipment，用户设备
eNB：evolved NodeB，演进型基站
gNB：NR基站
kssb：SSB subcarrier offset，SSB子载波偏移
TTI：Transmission Time Interval，传输时间间隔
OFDM：Orthogonal Frequency Division Multiplexing，正交频分复用
CP-OFDM：Cyclic Prefix Orthogonal Frequency Division Multiplexing，带有循环前缀的正交频分复用
C-RNTI：Cell Radio Network Temporary Identifier，小区无线网络临时标识
CSI：Channel State Information，信道状态信息
HARQ：Hybrid Automatic Repeat Request，混合自动重传请求
CSI-RS：Channel State Information Reference Signal，信道状态信息参考信号
CRS：Cell Reference Signal，小区特定参考信号
PBCH：Physical broadcast channel，物理广播信道
PUCCH：Physical Uplink Control Channel，物理上行控制信道
PUSCH：Physical Uplink Shared Channel，物理上行共享信道
PRACH：Physical random-access channel，物理随机接入信道
PDSCH：Physical downlink shared channel，物理下行共享信道
PDCCH：Physical downlink control channel，物理下行控制信道
UL-SCH：Uplink Shared Channel，上行共享信道
DL-SCH：Downlink Shared Channel，上行共享信道
RACH：random-access channel，随机接入信道
DCI：Downlink Control Information，下行控制信息
CG：Configured Grant，配置调度许可
MCS：Modulation and Coding Scheme，调制编码方案
RB：Resource Block，资源块
RE：Resource Element，资源单元
CRB：Common Resource Block，公共资源块
CP：Cyclic Prefix，循环前缀
PRB：Physical Resource Block，物理资源块
VRB：Virtual resource block，虚拟资源块
FDM：Frequency Division Multiplexing，频分复用
TDD：Time Division Duplexing，时分双工
FDD：Frequency Division Duplexing，频分双工
RRC：Radio Resource Control，无线资源控制
RSRP：Reference Signal Receiving Power，参考信号接收功率SRS：Sounding Reference Signal，探测参考信号
DMRS：Demodulation Reference Signal，解调参考信号
CSI-RS：Channel state information reference signal
CRC：Cyclic Redundancy Check，循环冗余校验
SFI：Slot Format Indication，时隙格式指示
SIB：system information block，系统信息块
SIB1：System Information Block Type 1，系统信息块类型1
PSS：Primary Synchronization Signal，主同步信号
SSS：Secondary Synchronization Signal，辅同步信号
SSB：Synchronization Signal Block，同步系统信息块
CRB：Common resource block，公共资源块
BWP：BandWidth Part，带宽片段/部分
SFN：System Frame Number，系统(无线)帧号
PCI：Physical Cell ID，物理小区标识
IE：Information Element，信息元素
EN-DC：EUTRA-NR Dual Connection，LTE-NR双连接
MCG：Master Cell Group，主小区组
SCG：Secondary Cell Group，辅小区组
PCell：Primary Cell，主小区
SCell：Secondary Cell，辅小区
SPS：Semi-Persistant Scheduling，半静态调度
TA：Timing Advance，上行定时提前量
PT-RS：Phase-Tracking Reference Signals，相位跟踪参考信号
TB：Transport Block，传输块
TBS：Transport Block Size，传输块大小
CB：Code Block，编码块/码块
QPSK：Quadrature Phase Shift Keying，正交相移键控
16/64/256 QAM：16/64/256 Quadrature Amplitude Modulation，正交幅度调制
AGC：Auto Gain Control，自动增益控制
TDRA(field)：Time Domain Resource Assignment，时域资源分配指示(域)
FDRA(field)：Frequency Domain Resource Assignment，频域资源分配指示(域)
ARFCN：Absolute Radio Frequency Channel Number，绝对无线频率信道编号
RedCap Device：Reduced Capability Device，降能力设备
CORESET0：Control resource set，控制资源集合
CCE：Control channel element，控制信道单元
REG：Resource Element Group，资源单元组
MIB：Master Information Block，主信息块
DRX：Discontinuous Reception，不连续接收
AL：Aggregation Level，汇聚级别
UCI：Uplink Control Information，上行控制信息
CSS：Common search space，公共搜索空间
USS：UE-specific search space，用户搜索空间
SCS：sub-carrier spacing，子载波间隔
SLIV：Start and length indicator value，起始和长度指示值
RIV：Resource indicator value，资源指示值
SS-RSRP：Synchronization Signal Reference Signal Received Power，同步参考信号接收功率
SS-RSRQ：Synchronization Signal Reference Signal Received Quality，同步参考信号接收质量
FR1：Frequency range 1 as defined in TS 38.104，由TS38.104定义的频率范围1
FR2：Frequency range 2 as defined in TS 38.104，由TS38.104定义的频率范围2
下文是与本发明方案相关联现有技术的描述。如无特别说明，具体实施例中与现有技术中相同术语的含义相同。
值得指出的是，本发明说明书中涉及的用户设备与终端设备含义相同，文中的UE也可以表示终端，后文中不做具体区分和限定。类似的，网络设备为与终端进行通信的设备，包括并不限于基站设备，gNB，eNB，无线AP等，后文中不做具体区分和限定。
网络设备可以通过向终端发送DCI信息来指示终端的行为，比如网络设备可以使用DCI format 0_0/0_1/0_2等进行上行数据传输的调度，也 可以使用DCI format 1_0/1_1/1_2等格式进行下行数据传输的调度，还可以使用DCI format2_0/2_1/.../2_6等以及DCI format3_0/3_1等进行其他数据传输或控制消息的指示。DCI消息包括并不限于上面提到的具体种类，可能进行扩展或变更，但都不影响本发明所涉及的方法的实施。DCI信息使用PDCCH信道进行传输。终端接收PDCCH，解码出相应的DCI，并根据DCI的指示进行数据传输。
NR中时频资源的一种单位为时隙，一个时隙包含14个(Normal CP场景)或12个(Extended CP场景)OFDM符号。时隙内的资源进一步可分为资源块和资源单元。资源块RB在频域上可以定义为
Figure PCTCN2021123503-appb-000001
个连续的子载波，例如对于15kHz的子载波间隔(SCS)，RB在频域上为180kHz。对于子载波间隔15kHz×2 μ，资源单元RE在频域上表示1个子载波，在时域上表示1个OFDM符号。不同配置下μ可以取值为0-4的整数值。若干个RE可以根据一定的配置和规则组成REG bundle，REG bundle再映射到CCE，用于PDCCH的传输。
PDCCH的资源可通过CORESET0和搜索空间参数确定，终端可根据CORESET0和搜索空间参数确定PDCCH所使用时频资源的具体位置。网络可能使用不同汇聚级别AL的资源传输PDCCH。比如使用AL＝4，即为该PDCCH使用CORESET0和搜索空间定义的资源块上的其中4个资源单位，比如4个CCE进行传输。比如使用AL＝16，即为该PDCCH使用CORESET0和搜索空间定义的资源块上的其中16个资源单位，比如16个CCE进行传输。根据搜索空间的大小和汇聚级别的大小，搜索空间上可能有多个PDCCH的候选位置，终端通过接收配置或预定义参数的方式，根据一定的规则可以确定CORESET0和搜索空间中使用某个AL的某个候选PDCCH的时频资源位置，比如终端可以确定从某个CCE序号起始的连续AL个CCE为一个PDCCH候选位置。终端在候选PDCCH上进行DCI信息的检测。
网络设备发送SSB信息，包括PSS，SSS和PBCH信号等，用于终端进行小区搜索和同步，接入等。终端可根据预定的规则和参数在频带上检测SSB，确定SSB的带宽，位置，子载波间隔等参数并接收相关信 号。PBCH中指示了若干用于终端接入网络的参数，比如CORESET0参数等，终端可根据网络的配置参数进行进一步的处理，比如进行PDCCH和PDSCH的接收等。
一些场景下，由于终端带宽的限制，网络配置的CORESET0所使用的带宽可能超过终端的接收能力，终端只能在部分带宽上接收信号，导致接收性能损失或者不能正确检测信号。本发明通过适当的配置，使得终端可以在部分带宽上接收信号，比如接收多个PDCCH，并对应到相关的DCI内容，以增强终端的接收能力，从而提升系统的通信能力。
图1是示出了本发明的由用户设备执行的方法的概略框图。
S101根据SSB的位置和/或CORESET的位置确定接收带宽的位置
S102在接收带宽内接收信号
具体的实施例，网络设备在频带上发送PBCH信号，广播本小区的接入配置等参数。终端设备根据获得的同步系统信息块SSB的带宽位置和/或控制资源集合CORESET的带宽位置确定接收带宽的位置。终端在确定的接收带宽内接收信号。
终端可根据接入配置参数及预定义参数等确定接入小区所需的信道资源位置，比如终端根据用于传输type0-PDCCH的CORESET0和搜索空间的配置参数，包括带宽，时频位置等。终端可以确定type0-PDCCH的时频资源位置，进行type0-PDCCH检测，并根据检测结果进行SIB1消息的接收。终端根据SSB和/或CORESET0的配置确定接收带宽位置。终端不接收所确定的带宽位置以外的信号。例如当CORESET0配置较大的带宽时，CORESET0的部分频域资源可能超出终端确定的接收带宽位置，终端对这部分信号不进行接收。
可选的，终端根据SSB的带宽中心确定接收带宽位置。终端以SSB的带宽中心为参考点，在参考点两边确定1/2带宽能力为所接收带宽位置。例如以SSB所使用的SCS为单位，NR中SSB占用240个子载波的带宽，那么终端可以确定第120子载波即为SSB带宽中心位置。例如终 端支持50MHz的带宽，终端以SSB带宽中心为参考点，两边各确定25MHz为接收带宽位置。可选的，接收带宽以CORESET0的SCS所确定的RB为单位。例如，30KHz的SCS在20M带宽内可以确定51个RB，终端在参考点两边各确定25.5个RB为接收带宽。另一个示例，120KHz的SCS在50M带宽内可以确定32个RB，终端在参考点两边各确定16个RB为接收带宽。
可选的，终端在参考点两边确定整数倍的RB为接收带宽。例如，终端接收带宽在某个SCS下支持RB数为N，终端确定参考点两边分别f(N/2)和N-f(N/2)个RB为接收带宽。f(x)为某种运算，比如向上取整或向下取整。
可选的，终端根据SSB的带宽中心，以及SSB子载波偏移参数确定接收带宽。终端以SSB的带宽中心为参考点，并根据PBCH指示的SSB子载波偏移参数kssb将参考点调整为对齐到CRB的子载波0位置。例如对于FR1频段，kssb指示0-23中的一个值，并以15kHz的SCS为单位。终端将根据SSB中心频点确定的参考点位置向下偏移kssb个单位，使参考点对齐到CRB的子载波0的位置，并使用该参考点确定终端的接收带宽位置。终端根据参考点位置确定接收带宽的频率范围或RB范围。
可选的，终端以CORESET的带宽中心为参考点，确定接收带宽位置。比如，终端根据PBCH配置的CORESET0参数确定CORESET0的最小RB到SSB最小RB的偏移以及根据PBCH指示的kssb参数确定最小RB的子载波0的位置。终端根据接收的CORESET0的配置可以确定CORESET0的起始位置和带宽，并确定CORESET0的中心为参考点。终端以参考点两边各确定1/2带宽能力为接收带宽位置。接收带宽可以以CORESET0的SCS所确定的RB为单位。例如，30KHz的SCS在20M带宽内可以确定51个RB，终端在参考点两边各确定25.5个RB为接收带宽。
可选的，当终端确定的接收带宽部分与CORESET的带宽不重叠时，终端可调整接收带宽位置，使得接收带宽位置与CORESET重叠。例如， CORESET0的RB0相对SSB的RB0偏移为4个RB，确定的带宽位置的RB0相对SSB的RB0偏移为10个RB，那么带宽位置的RB0-RB5即为与CORESET0不重叠。终端调整接收带宽位置，将带宽RB0对齐到CORESET0的RB0位置。
可选的，终端在不同时隙确定不同的接收带宽位置。终端确定在第一时隙按第一接收带宽位置接收信号，在第二时隙按第二接收带宽位置接收信号。示例的，终端确定第一时隙使用CORESET0的最小RB的子载波0到参考点为第一接收带宽，终端确定第二时隙使用参考点到CORESET0的最大RB的子载波11为第二接收带宽。
以上实施例中支持CORESET和SSB使用相同或不同SCS的场景。如果没有特别说明，可以以CORESET的SCS和所定义的RB为单位进行相关的计算。
终端确定接收带宽位置后进行信号的接收。图2是示出本发明的由用户设备执行的方法的具体步骤。
S201终端确定接收带宽位置
S202终端根据配置确定第一PDCCH时频参数
S203终端根据配置确定第二PDCCH时频参数
S204终端确定第一PDCCH和第二PDCCH传输相同的DCI
S205终端接收DCI
网络设备通过RRC信令指示用于终端设备接收PDCCH的公共搜索空间的CORESET的带宽和符号数，时频位置等参数。终端设备根据配置参数确定PDCCH的接收参数。
终端根据配置参数确定第一PDCCH的符号位置，CCE序号等参数，使用第一时频资源进行PDCCH信号的接收。具体的，终端根据配置的参数，在配置的符号和带宽上确定相关REG bundle的编号，REG到CCE的映射以及不同聚合等级的PDCCH所对应的CCE序号等参数。终端根据所确定的参数，在第一时频资源在接收带宽内的位置进行PDCCH信号的接收，第一时频资源为在第一PDCCH符号位置所确定的一个聚合等级的PDCCH所对应的CCE集合。
终端根据配置确定第二PDCCH的符号位置，CCE序号等参数，使用第二时频资源进行PDCCH信号的接收。具体的，终端根据配置的参数，在配置的符号和带宽上确定相关REG bundle的编号，REG到CCE的映射以及不同聚合等级的PDCCH所对应的CCE序号等参数。终端根据所确定的参数，在第二时频资源在接收带宽内的位置进行PDCCH信号的接收，第二时频资源为在第二PDCCH符号位置所确定的一个聚合等级的PDCCH所对应的CCE集合。
可选的，第一PDCCH和第二PDCCH使用不同的接收带宽。终端确定使用第一时隙的第一接收带宽接收第一PDCCH，使用第二时隙的第二接收带宽接收第二PDCCH。
可选的，终端根据SSB index确定第一PDCCH和第二PDCCH的时隙位置，第一PDCCH与SSB index i的slot n0相关联。第二PDCCH与SSB index i的slot n0+1相关联。可选的，终端根据网络发送的信令确定第一PDCCH和第二PDCCH的时隙位置。比如网络指示一个搜索空间周期内的不同监测机会分别传输第一PDCCH和第二PDCCH。
终端根据网络配置的CORESET位置和SSB位置确定PDCCH的候选资源位置。PDCCH在CORESET中有一个或多个候选位置。终端确定各个候选位置对应的资源索引，比如REG bundle序号，CCE序号等。终端根据CORESET与SSB的相对位置确定第一候选位置的参数。可选的，相对位置为SSB最小RB序号与CORESET最小RB序号的相对位置。可选的，相对位置为SSB参考点与CORESET最小RB序号的相对位置。可选的，相对位置为SSB参考点与CORESET参考点的距离，所述参考点可以结合前面的实施例进行确定。
作为示例的实施例，终端根据所述相对位置确定REG bundle到CCE的映射。终端确定REG bundle的编号和每个REG bundle所对应的时频资源，根据映射规则进行REG bundle到CCE的映射。可选的，终端可根据公式进行CCE序号x到REG bundle序号f(x)的映射。
Figure PCTCN2021123503-appb-000002
x＝cR+r
r＝0，1，...，R-1
c＝0，1，...，C-1
Figure PCTCN2021123503-appb-000003
Figure PCTCN2021123503-appb-000004
其中
Figure PCTCN2021123503-appb-000005
为所述CORESET所使用的符号数，
Figure PCTCN2021123503-appb-000006
为所述CORESET所使用的REG数量。
Figure PCTCN2021123503-appb-000007
为小区ID。K为CORESET与SSB的相对位置值。n0为第一PDCCH所在的时隙号。
作为示例的实施例，终端可根据所述相对位置确定PDCCH所使用的CCE序号。示例的，终端根据公式确定汇聚级别L的PDCCH所使用的CCE序号
Figure PCTCN2021123503-appb-000008
Figure PCTCN2021123503-appb-000009
其中L为PDCCH所使用的汇聚级别，
Figure PCTCN2021123503-appb-000010
为L汇聚级别下的候选PDCCH序号.
Figure PCTCN2021123503-appb-000011
为UE配置用于在搜索空间s中检测汇聚级别L所对应的候选PDCCH数量。n CI为载波序号，这里为0。N CCE，p为CORESET p所使用的CCE数量。
Figure PCTCN2021123503-appb-000012
为CORESET所使用的符号数。K为所述的相对位置值。n0为第一PDCCH所在的时隙号。i取值0-L-1。
可选的，终端根据CORESET的带宽以及待检测的汇聚级别参数确定PDCCH所使用的CCE序号。示例的，终端根据公式确定PDCCH所使用的CCE序号
Figure PCTCN2021123503-appb-000013
其中
Figure PCTCN2021123503-appb-000014
其中L为PDCCH所使用的汇聚级别，
Figure PCTCN2021123503-appb-000015
为L汇聚级别下的候选PDCCH序号.
Figure PCTCN2021123503-appb-000016
为UE配置用于在搜索空间s中检测汇聚级别L所对应的候选PDCCH数量。n CI为载波序号，这里为0。N CCE，p为CORESET p所使用的CCE数量。
Figure PCTCN2021123503-appb-000017
为CORESET所使用的符号数。K为CORESET0与SSB的相对位置值。n0为第一PDCCH所在的时隙号。i取值0-L-1。
终端确定第一PDCCH和第二PDCCH传输相同的DCI内容。可选的，终端根据预定义的规则确定第一PDCCH和第二PDCCH传输相同的DCI内容。例如，当网络发送了大于支持的最小带宽的CORESET0配置时，终端确定第一PDCCH和第二PDCCH传输相同的DCI内容。可选的，终端根据检测确定第一PDCCH和第二PDCCH传输相同的DCI内容。例如，终端可在相同汇集级别的PDCCH候选位置上进行盲检，当检测到第一PDCCH和第二PDCCH的特征相同，比如DMRS的序列相同，终端确定第一PDCCH和第二PDCCH传输相同的DCI内容。可选的，终端可根据指示信息确定第一PDCCH和第二PDCCH传输相同的DCI内容。终端根据网络发送的RRC信令或DCI信令或MAC-CE信令等，确定第一PDCCH和第二PDCCH传输相同的DCI内容。
终端接收第一PDCCH和第二PDCCH，获得PDCCH所传输的DCI，并根据DCI中指示的配置进行PDSCH接收。
另一个具体的实施例，网络设备通过RRC信令比如SIB1配置公共搜索空间参数，终端根据配置参数确定待检测的CORESET和搜索空间相关的时频资源配置。终端在确定的资源上进行PDCCH检测，并可根据检测结果进行PDSCH/Msg4的接收。
作为示例的实施例，终端可根据RRC/SIB中指示CORESET的带宽 和符号数，由RRC配置参数定义，第一PDCCH和第二PDCCH的配置。例如网络通过RRC参数配置第一PDCCH和第二PDCCH的参数。比如网络配置第一PDCCH和第二PDCCH所使用的REG bundle序号的偏移，终端根据配置确定第一PDCCH和第二PDCCH所使用CCE所对应的的REG bundle序号，确定第一PDCCH和第二PDCCH所使用的时频资源。可选的，网络配置第一PDCCH和第二PDCCH所使用的CCE的偏移或相对关系，终端根据配置值，确定第一PDCCH和第二PDCCH所使用的时频资源。
[变形例]
下面，利用图3来说明作为一种变形例的可执行本发明上面所详细描述的用户设备执行的方法的用户设备。
图3是表示本发明所涉及的用户设备UE的框图。
如图3所示，该用户设备UE50包括处理器501和存储器502。处理器501例如可以包括微处理器、微控制器、嵌入式处理器等。存储器502例如可以包括易失性存储器(如随机存取存储器RAM)、硬盘驱动器(HDD)、非易失性存储器(如闪速存储器)、或其他存储器等。存储器502上存储有程序指令。该指令在由处理器501运行时，可以执行本发明详细描述的由用户设备执行的上述方法。
上文已经结合优选实施例对本发明的方法和涉及的设备进行了描述。本领域技术人员可以理解，上面示出的方法仅是示例性的，而且以上说明的各实施例在不发生矛盾的情况下能够相互组合。本发明的方法并不局限于上面示出的步骤和顺序。上面示出的网络节点和用户设备可以包括更多的模块，例如还可以包括可以开发的或者将来开发的可用于基站、MME、或UE的模块等等。上文中示出的各种标识仅是示例性的而不是限制性的，本发明并不局限于作为这些标识的示例的具体信元。本领域技术人员根据所示实施例的教导可以进行许多变化和修改。
应该理解，本发明的上述实施例可以通过软件、硬件或者软件和硬件两者的结合来实现。例如，上述实施例中的基站和用户设备内部的各 种组件可以通过多种器件来实现，这些器件包括但不限于：模拟电路器件、数字电路器件、数字信号处理(DSP)电路、可编程处理器、专用集成电路(ASIC)、现场可编程门阵列(FPGA)、可编程逻辑器件(CPLD)，等等。
在本申请中，“基站”可以指具有较大发射功率和较广覆盖面积的移动通信数据和控制交换中心，包括资源分配调度、数据接收发送等功能。“用户设备”可以指用户移动终端，例如包括移动电话、笔记本等可以与基站或者微基站进行无线通信的终端设备。
此外，这里所公开的本发明的实施例可以在计算机程序产品上实现。更具体地，该计算机程序产品是如下的一种产品：具有计算机可读介质，计算机可读介质上编码有计算机程序逻辑，当在计算设备上执行时，该计算机程序逻辑提供相关的操作以实现本发明的上述技术方案。当在计算系统的至少一个处理器上执行时，计算机程序逻辑使得处理器执行本发明实施例所述的操作(方法)。本发明的这种设置典型地提供为设置或编码在例如光介质(例如CD-ROM)、软盘或硬盘等的计算机可读介质上的软件、代码和/或其他数据结构、或者诸如一个或多个ROM或RAM或PROM芯片上的固件或微代码的其他介质、或一个或多个模块中的可下载的软件图像、共享数据库等。软件或固件或这种配置可安装在计算设备上，以使得计算设备中的一个或多个处理器执行本发明实施例所描述的技术方案。
此外，上述每个实施例中所使用的基站设备和终端设备的每个功能模块或各个特征可以由电路实现或执行，所述电路通常为一个或多个集成电路。设计用于执行本说明书中所描述的各个功能的电路可以包括通用处理器、数字信号处理器(DSP)、专用集成电路(ASIC)或通用集成电路、现场可编程门阵列(FPGA)或其他可编程逻辑器件、分立的门或晶体管逻辑、或分立的硬件组件、或以上器件的任意组合。通用处理器可以是微处理器，或者所述处理器可以是现有的处理器、控制器、微控制器或状态机。上述通用处理器或每个电路可以由数字电路配置，或者可以由逻辑电路配置。此外，当由于半导体技术的进步，出现了能 够替代目前的集成电路的先进技术时，本发明也可以使用利用该先进技术得到的集成电路。
尽管以上已经结合本发明的优选实施例示出了本发明，但是本领域的技术人员将会理解，在不脱离本发明的精神和范围的情况下，可以对本发明进行各种修改、替换和改变。因此，本发明不应由上述实施例来限定，而应由所附权利要求及其等价物来限定。

Claims (10)

  1. 一种由用户设备UE执行的方法，包括：
    根据配置参数确定接收带宽的位置；和
    在所述接收带宽内接收信号，
    所述配置参数包括同步系统信息块SSB的带宽位置和/或控制资源集合CORESET的带宽位置。
  2. 根据权利要求1所述的由用户设备执行的方法，其特征在于，
    根据所述SSB的带宽中心确定所述接收带宽的位置，或者根据所述SSB和CORESET的相对位置确定所述接收带宽的位置。
  3. 根据权利要求2所述的由用户设备执行的方法，还包括：
    根据SSB子载波偏移参数确定所述接收带宽的位置。
  4. 根据权利要求1所述的由用户设备执行的方法，其特征在于，
    根据所述CORESET的带宽中心确定所述接收带宽的位置。
  5. 根据权利要求1所述的由用户设备执行的方法，其特征在于，
    当确定的所述接收带宽与所述CORESET的带宽不重叠时，调整所述接收带宽的位置，使得所述接收带宽的位置与所述CORESET重叠。
  6. 根据权利要求1所述的由用户设备执行的方法，其特征在于，
    所述UE确定第一物理下行控制信道PDCCH和第二物理下行控制信道PDCCH的资源参数，所述第一PDCCH和第二PDCCH的资源参数不同，其中，
    所述资源参数为控制信道单元CCE序号或候选PDCCH序号或资源单元组REG bundle序号中的一种或其组合，
    所述UE接收接收带宽内的所述PDCCH。
  7. 根据权利要求6所述的由用户设备执行的方法，其特征在于，
    所述第一PDCCH和所述第二PDCCH传输相同的下行控制信息DCI内容。
  8. 根据权利要求6所述的由用户设备执行的方法，其特征在于，
    所述资源参数由所述PDCCH所在的所述CORESET与所述SSB的相对位置确定，
    所述相对位置包括所述CORESET的最小RB与所述SSB最小RB的偏移或所述CORESET的带宽中心与所述SSB带宽中心的偏移。
  9. 根据权利要求6所述的由用户设备执行的方法，其特征在于，
    所述资源参数由所述PDCCH的所述CORESET带宽和符号数，所述PDCCH的时隙号确定。
  10. 一种用户设备，包括：
    处理器；以及
    存储器，存储有指令；
    其中，所述指令在由所述处理器运行时执行根据权利要求1至9中的任一项所述的方法。
PCT/CN2021/123503 2020-10-16 2021-10-13 由用户设备执行的方法以及用户设备 Ceased WO2022078377A1 (zh)

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