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公开(公告)号：US11864012B2
公开(公告)日：2024-01-02
申请号：US17809879
申请日：2022-06-29
发明人： Hongbo Si , Yingzhe Li
摘要： A method and apparatus in a wireless communication system is provided. The method and apparatus comprise: receiving an SS/PBCH block; determining a subcarrier spacing of the SS/PBCH block from a set of subcarrier spacings {SCS1, SCS2}; determining a subcarrier spacing of a Type0-PDCCH CSS set in a CORESET, the subcarrier spacing of the Type0-PDCCH CSS set is the same as the subcarrier spacing of the SS/PBCH block; determining a bandwidth and a number of symbols of the CORESET based on an MIB in the SS/PBCH block; determining a frequency offset from a set of frequency offsets {O1, O2}, the frequency offset is determined as being from a smallest RB index of the CORESET to a smallest RB index of the common RB overlapping with a first RB of the SS/PBCH block; determining a frequency location of the CORESET; and receiving a Type0-PDCCH.
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公开(公告)号：US20220338040A1
公开(公告)日：2022-10-20
申请号：US17809879
申请日：2022-06-29
发明人： Hongbo Si , Yingzhe Li
IPC分类号： H04W24/08
摘要： A method and apparatus in a wireless communication system is provided. The method and apparatus comprise: receiving an SS/PBCH block; determining a subcarrier spacing of the SS/PBCH block from a set of subcarrier spacings {SCS1, SCS2}; determining a subcarrier spacing of a Type0-PDCCH CSS set in a CORESET, the subcarrier spacing of the Type0-PDCCH CSS set is the same as the subcarrier spacing of the SS/PBCH block; determining a bandwidth and a number of symbols of the CORESET based on an MIB in the SS/PBCH block; determining a frequency offset from a set of frequency offsets {O1, O2}, the frequency offset is determined as being from a smallest RB index of the CORESET to a smallest RB index of the common RB overlapping with a first RB of the SS/PBCH block; determining a frequency location of the CORESET; and receiving a Type0-PDCCH.
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公开(公告)号：US11412514B2
公开(公告)日：2022-08-09
申请号：US17090786
申请日：2020-11-05
发明人： Hongbo Si , Yingzhe Li
摘要： Methods and apparatuses in a wireless communication system operating with shared spectrum channel access. A method of operating a UE includes receiving an SS/PBCH block; determining a higher-layer parameter ssb-SubcarrierOffset based on an MIB of a PBCH included in the SS/PBCH block; determining a bit (āĀ+5) from a payload of the PBCH; and determining a first value (kSSB) based on a second value (kSSB). Four LSBs of the second value (kSSB) are indicated by the higher-layer parameter ssb-SubcarrierOffset and an MSB of the second value (kSSB) is indicated by the bit (āĀ+5).
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公开(公告)号：US11246160B2
公开(公告)日：2022-02-08
申请号：US16799636
申请日：2020-02-24
发明人： Yingzhe Li , Hongbo Si
摘要： A method and apparatus of a UE in a wireless communication system supporting a shared spectrum channel access is provided. The method comprises: receiving, from a BS, a set of higher layer parameters; identifying, from the received set of higher layer parameters, a set of SS/PBCH blocks assumed to be transmitted by the BS; identifying, from the received set of higher layer parameters, a PRACH slot including at least one random access RO; determining the at least one RO as at least one valid RO; and transmitting, to the BS, a PRACH preamble in the at least one valid RO.
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5.发明授权公开(公告)号：US11109375B2
公开(公告)日：2021-08-31
申请号：US16708008
申请日：2019-12-09
发明人： Hongbo Si , Yingzhe Li
摘要： A method of a UE in a wireless communication system supporting a shared spectrum channel access is provided. The UE comprises: receiving, from a BS over a first downlink channel, a SS/PBCH block; determining a transmission window in which the received SS/PBCH block is located; determining whether a CORESET for Type0-PDCCH CSS is present based on the received SS/PBCH block; determining a parameter for a QCL assumption of candidate SS/PBCH blocks within the transmission window; determining a group of QCLed candidate SS/PBCH blocks within the transmission window based on the determined parameter for the QCL assumption; determining a group of slots including the Type0-PDCCH CSS, wherein each slot of the group of slots corresponds to a candidate SS/PBCH block within the group of QCLed candidate SS/PBCH blocks; and receiving, over a second downlink channel, at least one Type0-PDCCH based on the determined groups of slots including the Type0-PDCCH CSS.
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公开(公告)号：US20210153249A1
公开(公告)日：2021-05-20
申请号：US17248611
申请日：2021-01-29
发明人： Yingzhe Li , Hongbo Si
摘要： A base station (BS) in a wireless communication system is provided. The BS comprises a processor configured to determine frequency units within a frequency range for a bandwidth of an operating carrier, wherein a listen-before-talk (LBT) operation is performed over each of the frequency units; and determine, for each of the frequency units, a set of intended spatial transmit (TX) parameters and a set of spatial receiver (RX) parameters of the LBT operation; and determine a subset of the frequency units for a downlink transmission based on the LBT operation performed over each of the frequency units; and a transceiver operably connected to processor, which is configured to transmit, to a user equipment (UE), downlink channels using the bandwidth corresponding to the determined subset of the frequency units.
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公开(公告)号：US20200314891A1
公开(公告)日：2020-10-01
申请号：US16810731
申请日：2020-03-05
发明人： Yingzhe Li , Hongbo Si , Qiongjie Lin
摘要： A method and apparatus in a wireless communication system supporting a semi-static shared spectrum channel access is provided. The method and apparatus comprises: receiving system information carried by downlink channels; identifying a duration of idle period, a fixed frame period, a number of observation slots, and an index; determining a first phase based on a first time period between a starting instance of the idle period and an ending instance of the at least one observation slot, a second phase based on a second time period between the ending instance of the at least one observation slot and an ending instance of the idle period, and a third phase based on a third time period between the ending instance of the idle period and an ending instance of the fixed frame period; and identifying the downlink channels as an idle state in the at least one observation slot.
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公开(公告)号：US20200281018A1
公开(公告)日：2020-09-03
申请号：US16799636
申请日：2020-02-24
发明人： Yingzhe Li , Hongbo Si
摘要： A method and apparatus of a UE in a wireless communication system supporting a shared spectrum channel access is provided. The method comprises: receiving, from a BS, a set of higher layer parameters; identifying, from the received set of higher layer parameters, a set of SS/PBCH blocks assumed to be transmitted by the BS; identifying, from the received set of higher layer parameters, a PRACH slot including at least one random access RO; determining the at least one RO as at least one valid RO; and transmitting, to the BS, a PRACH preamble in the at least one valid RO.
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公开(公告)号：US20200100284A1
公开(公告)日：2020-03-26
申请号：US16570835
申请日：2019-09-13
发明人： Yingzhe Li , Hongbo Si
摘要： A method of a base station (BS) in a wireless communication system is provide. The method comprises: receiving, from at least one user equipment (UE) via an uplink channel, a set of hybrid automatic repeat request-acknowledge/negative acknowledge (HARQ-ACK/NACK) responses corresponding to downlink transmissions transmitted to the at least one UE; determining a set of time and frequency domain resources that contains non-broadcast physical downlink shared channel (PDSCH) transmissions on a downlink transmission burst that is previously transmitted to the at least one UE; adjusting a contention window size (CWS) based on a subset of the set of HARQ-ACK/NACK responses, the subset of HARQ-ACK/NACK responses corresponding to the unicast PDSCH transmissions on the determined set of time and frequency domain resources; performing a listen-before-talk (LBT) operation with a configurable sensing duration based on the adjusted CWS; and transmitting via a downlink channel a downlink transmission based on the LBT operation.
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公开(公告)号：US20190387546A1
公开(公告)日：2019-12-19
申请号：US16417327
申请日：2019-05-20
发明人： Yingzhe Li , Hongbo Si
摘要： A method of a user equipment (UE) in a wireless communication network is provided. The method comprises determining a set of time and frequency domain resources to transmit a physical random access channel (PRACH) preamble over a PRACH, determining a format of the PRACH preamble, wherein the PRACH preamble includes one or more repeated preambles based on a sequence and a cyclic prefix (CP) preceding repeated preamble sequences for the one or more repeated preambles, determining a set of time and frequency domain resources to perform a listen-before-talk (LBT) operation in an unlicensed spectrum, determining whether to transmit the PRACH preamble associated with the LBT operation in the unlicensed spectrum, and transmitting, to a base station (BS), the PRACH preamble in the unlicensed spectrum based on a result of the determination of the LBT operation to transmit PRACH preamble.
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