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公开(公告)号：US11013036B2
公开(公告)日：2021-05-18
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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公开(公告)号：US20210136591A1
公开(公告)日：2021-05-06
申请号：US17075509
申请日：2020-10-20
发明人： Hongbo Si , Yingzhe Li
摘要： A method and apparatus of a user equipment (UE) in a wireless communication system is provided. The method and apparatus comprises: receiving a synchronization signals and physical broadcast channel (SS/PBCH) block; determining whether a shared spectrum channel access is enabled; determining a first index of the SS/PBCH block as a candidate SS/PBCH block index (ISSB1) based on a number of candidate SS/PBCH blocks in a half frame; and determining a second index of the SS/PBCH block as an SS/PBCH block index (ISSB2) based on a quasi-co-location (QCL) parameter (Q) indicated by a PBCH in the SS/PBCH block, wherein the SS/PBCH block index (ISSB2) is determined as: ISSB2=ISSB1 mod Q based on a determination that the shared spectrum channel access is enabled, where mod is a modular operation; or ISSB2=ISSB1 based on the determination that the shared spectrum channel access is not enabled.
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公开(公告)号：US20210067298A1
公开(公告)日：2021-03-04
申请号：US16947402
申请日：2020-07-30
发明人： Hongbo Si , Yingzhe Li
摘要： A method and apparatus of a UE in a wireless communication system supporting a shared spectrum channel access is provided. The method and apparatus comprises: identifying a frequency location of a synchronization signals and physical broadcast channel (SS/PBCH) block; receiving the SS/PBCH block; determining whether the frequency location of the SS/PBCH block corresponds to a global synchronization channel number (GSCN) of a synchronization raster entry; and determining an offset as a sum of a first offset and a second offset, if the frequency location of the SS/PBCH block does not correspond to the GSCN of the synchronization raster entry, wherein the offset is a difference from a smallest resource block (RB) index of a control resource set (CORESET) for Type0 physical downlink control channel (Type0-PDCCH) common search space (CSS) set to a smallest RB index of a common RB overlapping with a first RB of the SS/PBCH block.
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公开(公告)号：US20210014694A1
公开(公告)日：2021-01-14
申请号：US16946361
申请日：2020-06-18
发明人： Yingzhe Li , Hongbo Si , Eun Sun Kim
摘要： A method of a user equipment (UE) in a wireless communication system supporting a shared spectrum channel access is provided. The method comprises: receiving, from a base station (BS), a set of higher layer parameters including a subcarrier spacing of a physical random access channel (PRACH) preamble, a logical root index (ilog) for the PRACH preamble, and an index (zeroCorrelationZoneConfg); determining a sequence length (LRA) for the PRACH preamble based on the subcarrier spacing of the PRACH preamble; determining a physical root index (iphy) for the PRACH preamble based on the logical root index (ilog); determining a cyclic shift (NCS) for the PRACH preamble based on the index (zeroCorrelationZoneConfg); generating the PRACH preamble based on the determined sequence length LRA, the determined physical root index iphy, and the determined cyclic shift NCS; and transmitting, to the base station (BS) over the shared spectrum channel, the PRACH preamble.
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公开(公告)号：US10742562B2
公开(公告)日：2020-08-11
申请号：US15207291
申请日：2016-07-11
IPC分类号： H04W72/10 , H04L12/807 , H04W76/28 , H04W16/14 , H04W72/02 , H04W72/14 , H04W72/04 , H04W74/08 , H04L5/00
摘要： A method for listen-before-talk (LBT) operation by an eNodeB (eNB) in a wireless communication network is provided. The method includes triggering an LBT request to transmit, to a user equipment (UE), at least one of an uplink (UL) grant or downlink (DL) data for UL transmission over an licensed assisted access (LAA), determining an adaptive contention window (CW) size includes a predetermined minimum value and maximum value for transmitting the DL data and UL grant, performing DL data and UL grant LBT operations in accordance with the adaptive CW size, performing a UL grant LBT operation that includes a higher priority than the DL data regardless of a level of quality of service (QoS) of the DL data to transmit a UL grant message to the UE, and multiplexing the UL grant with the DL data, and transmitting the multiplexed UL grant with the DL data transmission to the UE.
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公开(公告)号：US20200187302A1
公开(公告)日：2020-06-11
申请号：US16698085
申请日：2019-11-27
发明人： Hongbo Si , Yingzhe Li
摘要： A UE in a wireless communication system supporting a shared spectrum channel access is provided. The method comprises: determining a set of DSCH transmission windows based on a window periodicity, a window duration, and a window offset; determining a first set of SS/PBCH blocks within a DSCH transmission window of the set of DSCH transmission windows, wherein the first set of SS/PBCH blocks is QCLed; determining a second set of SS/PBCH blocks across at least two DSCH transmission windows being different DSCH windows of the set of DSCH transmission windows, wherein the second set of SS/PBCH blocks is QCLed; and receiving at least one SS/PBCH block that is located in the first set of SS/PBCH blocks or the second set of SS/PBCH blocks based on QCL information of the first set of SS/PBCH blocks or the second set of SS/PBCH blocks within the DSCH transmission window.
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公开(公告)号：US20200084739A1
公开(公告)日：2020-03-12
申请号：US16562332
申请日：2019-09-05
发明人： Hongbo Si , Yingzhe Li
摘要： A method of a user equipment (UE) in a wireless communication system is provided. The method comprises receiving, from a base station (BS), a synchronization signal and physical broadcast channel block (SS/PBCH block) over a downlink channel of an unlicensed band; identifying a frequency location selected from a set of synchronization raster entries for receiving the SS/PBCH block, wherein the frequency location is aligned with a center resource element (RE) of the SS/PBCH block; determining a first RE in a first lowest frequency domain location of the SS/PBCH block based on the identified frequency location; and determining a second RE in a second lowest frequency domain location of a control resource set #0 (CORESET #0) that includes a fixed frequency offset between the first RE of the SS/PBCH block and the second RE of the CORESET #0.
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公开(公告)号：US20200037354A1
公开(公告)日：2020-01-30
申请号：US16522588
申请日：2019-07-25
发明人： Yingzhe Li , Hongbo Si , Qiongjie Lin
摘要： A user equipment (UE) includes at least one processor configured to identify a channel access mechanism to gain access to an operating channel of unlicensed band, perform a listen-before-talk (LBT) operation over the operating channel according to the identified channel access mechanism and obtain a channel occupancy time (COT) for transmission and reception on the operating channel after the LBT operation is successful, and identify, within the COT, one or more switching points for the UE to switch from uplink (UL) transmission to downlink (DL) reception or from the DL reception to the UL transmission. The UE further includes a transceiver configured to transmit to or receive from a base station (BS) over the operating channel during the COT, and switch from the UL transmission to the DL reception or from the DL reception to the UL transmission based on the identified one or more switching points.
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公开(公告)号：US20200029238A1
公开(公告)日：2020-01-23
申请号：US16513528
申请日：2019-07-16
发明人： Hongbo Si , Yingzhe Li
摘要： A method of a user equipment (UE) in a wireless communication system is provided. The method comprises: receiving, from a base station (BS), a set of radio resource control (RRC) parameters comprising at least one measurement object (MO); identifying, based on the at least one MO, at least one modulo value for synchronization signals and physical broadcast channel (SS/PBCH) blocks, and at least one bitmap indicating indices of the SS/PBCH blocks; identifying a set of SS/PBCH block locations based on the at least one modulo value and the at least one bitmap; performing radio resource management (RRM) measurement based on the identified set of SS/PBCH block locations; and transmitting, to the BS via an uplink channel, a measurement report message including a result of the RRM measurement.
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80.发明申请公开(公告)号：US20170019909A1
公开(公告)日：2017-01-19
申请号：US15207291
申请日：2016-07-11
摘要： A method for listen-before-talk (LBT) operation by an eNodeB (eNB) in a wireless communication network. The method comprises triggering an LBT request to transmit, to a user equipment (UE), at least one of an uplink (UL) grant or downlink (DL) data for UL transmission over an licensed assisted access (LAA), determining an adaptive contention window (CW) size comprising a predetermined minimum value and maximum value for transmitting the DL data and UL grant, performing DL data and UL grant LBT operations in accordance with the adaptive CW size, performing a UL grant LBT operation to transmit a UL grant message to the UE, wherein the UL grant LBT comprises a higher priority than the DL data regardless of a level of QoS of the DL data, multiplexing the UL grant with the DL data, and transmitting the multiplexed UL grant with the DL data transmission to the UE.
摘要翻译： 一种在无线通信网络中由eNodeB（eNB）进行听即演（LBT）操作的方法。 所述方法包括触发LBT请求，以向用户设备（UE）发送用于通过许可辅助接入（LAA）进行UL传输的上行链路（UL）准予或下行链路（DL）数据中的至少一个，确定自适应争用 窗口（CW）大小包括用于发送DL数据和UL许可的预定最小值和最大值，根据自适应CW大小执行DL数据和UL许可LBT操作，执行UL授权LBT操作以发送UL授权消息 其中UL授权LBT包括比DL数据更高的优先级，而不管DL数据的QoS级别如何，使用DL数据复用UL许可，并且将具有DL数据传输的多路复用UL许可传送到 UE。
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