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公开(公告)号：WO2021003128A1
公开(公告)日：2021-01-07
申请号：PCT/US2020/040242
申请日：2020-06-30
Applicant: QUALCOMM INCORPORATED
Inventor： PARK, Sungwoo , CHENDAMARAI KANNAN, Arumugam , LUO, Tao , YERRAMALLI, Srinivas , CHANDE, Vinay , KHOSHNEVISAN, Mostafa , SUN, Jing , ZHANG, Xiaoxia , NAM, Wooseok
Abstract: Methods, systems, and devices for wireless communications are described. In some systems implementing beamforming, a neighboring base station may cause interference to a user equipment (UE) served by a different base station. To mitigate unexpected interference, an interference coordination region including time and frequency resources may be configured between the base stations. The interference coordination region may be configured based on long-term information for the base stations and may include one or both of a set of beam-avoidance sub-regions or a set of beam-preference sub-regions for a base station, where each sub-region is associated with a beam index. A base station may schedule a communication beam in the interference coordination region based on a beam-avoidance region (e.g., refraining from using a particular communication beam) or a beam-preference region (e.g., prioritizing a particular communication beam). The base station may transmit a message to a UE using the scheduled communication beam.
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公开(公告)号：WO2020263475A1
公开(公告)日：2020-12-30
申请号：PCT/US2020/034319
申请日：2020-05-22
Applicant: QUALCOMM INCORPORATED
Inventor： YERRAMALLI, Srinivas , CHENDAMARAI KANNAN, Arumugam , CHANDE, Vinay , PARK, Sungwoo , ZHANG, Xiaoxia , LUO, Tao , CHAKRABORTY, Kaushik , AWONIYI-OTERI, Olufunmilola Omolade , SUN, Jing , KHOSHNEVISAN, Mostafa , AKKARAKARAN, Sony , FAN, Zhifei
Abstract: Methods, systems, and devices for wireless communications are described. A wireless device, such as a base station or a user equipment, may identify an energy detection threshold for a sensing beam associated with a channel access procedure, such as a listen-before-talk (LBT) procedure. The wireless device may also identify a set of transmit power parameters for one or more transmit beams. The wireless device may determine a degree of overlap between a beam shape of one or more transmit beams and a beam shape (e.g., a coverage area) of the sensing beam. The wireless device may adjust the set of transmit power parameters, the energy detection threshold, or a combination thereof based on the degree of overlap. The wireless device may perform the channel access procedure based on the determining, the adjusting, or both.
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公开(公告)号：WO2020247104A1
公开(公告)日：2020-12-10
申请号：PCT/US2020/029596
申请日：2020-04-23
Applicant: QUALCOMM INCORPORATED
Inventor： PARK, Sungwoo , CHENDAMARAI KANNAN, Arumugam , CHANDE, Vinay , YERRAMALLI, Srinivas , LUO, Tao , ZHANG, Xiaoxia , SUN, Jing , CHAKRABORTY, Kaushik , AKKARAKARAN, Sony , AWONIYI-OTERI, Olufunmilola Omolade , FAN, Zhifei , KHOSHNEVISAN, Mostafa , NAM, Wooseok
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) in communication with a serving base station may identify that the UE is a potential victim of interference from a neighboring base station. The UE may transmit an interference coordination message to the neighboring base station. The interference coordination message may request modification of one or more transmission parameters at the neighboring base station. The neighboring base station may modify its transmission parameters to decrease interference with the UE, and the UE may communicate with the serving base station after transmitting the interference coordination message.
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公开(公告)号：WO2020214977A1
公开(公告)日：2020-10-22
申请号：PCT/US2020/028803
申请日：2020-04-17
Applicant: QUALCOMM INCORPORATED
Inventor： YERRAMALLI, Srinivas , CHENDAMARAI KANNAN, Arumugam , CHANDE, Vinay , ZHANG, Xiaoxia , LUO, Tao
Abstract: For unlicensed high-frequency bands such as mmW bands as used in 5G NR communications, either by regulation or for coexistence with licensed frequency bands, there may be a need for a contention-based access procedure such as the LBT procedure. A challenge is to find a suitable sensing beam to functions as a proxy for a set of transmission beams. In an aspect of the disclosure, a method and an apparatus are provided. The apparatus is configured to determine a set of transmission beams for a transmission opportunity, determine a sensing beam for the set of transmission beams based on a set of beam sensing criteria; and initiate an LBT procedure by sensing an energy on the determined sensing beam. The apparatus may then use the LBT procedure to obtain the access to and transmit data on the determined set of transmission beams.
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公开(公告)号：WO2020172404A1
公开(公告)日：2020-08-27
申请号：PCT/US2020/019033
申请日：2020-02-20
Applicant: QUALCOMM INCORPORATED
Inventor： PARK, Sungwoo , JOHN WILSON, Makesh Pravin , CHANDE, Vinay , LUO, Tao , SUN, Jing , ZHANG, Xiaoxia , CHENDAMARAI KANNAN, Arumugam , NAM, Wooseok
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may select a random access channel (RACH) signature from among one or more RACH signatures associated with a synchronization signal block (SSB). The UE may transmit, to a base station (BS), a RACH communication using the selected RACH signature. Numerous other aspects are provided.
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Patent Agency Ranking
公开(公告)号：WO2020154666A1
公开(公告)日：2020-07-30
申请号：PCT/US2020/015060
申请日：2020-01-24
Applicant: QUALCOMM INCORPORATED
Inventor： CHANDE, Vinay , ZHANG, Xiaoxia , LUO, Tao , CHENDAMARAI KANNAN, Arumugam , JOHN WILSON, Makesh Pravin , NAM, Wooseok , PARK, Sungwoo , SUN, Jing
IPC: H04W74/08
Abstract: Aspects described herein relate to receiving multiple synchronization signal block (SSB) signals from a base station, wherein the multiple SSB signals are each beamformed based on a different directional beam, selecting a signature from a signature space of a first SSB of the multiple SSB signals, and transmitting, based on the signature, a random access message to the base station, wherein the random access message includes an indicator of a preferred SSB of the multiple SSB signals.
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公开(公告)号：WO2020149989A1
公开(公告)日：2020-07-23
申请号：PCT/US2019/068317
申请日：2019-12-23
Applicant: QUALCOMM INCORPORATED
Inventor： CHANDE, Vinay , LUO, Tao , ZHANG, Xiaoxia , JOHN WILSON, Makesh Pravin , CHENDAMARAI KANNAN, Arumugam
IPC: H04W74/08
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may select, for a first message of a random access channel (RACH) procedure and based at least in part on whether the UE has beam correspondence, at least one of: a set of time-frequency resources for the first message of the RACH procedure, or a preamble for the first message of the RACH procedure. In some aspects, the UE may transmit, to a base station and based at least in part on selecting the at least one of the set of time-frequency resources or the preamble, the first message of the RACH procedure. Numerous other aspects are provided.
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公开(公告)号：WO2020146468A1
公开(公告)日：2020-07-16
申请号：PCT/US2020/012696
申请日：2020-01-08
Applicant: QUALCOMM INCORPORATED
Inventor： CHENDAMARAI KANNAN, Arumugam , KHOSHNEVISAN, Mostafa , ZHANG, Xiaoxia , SUN, Jing , LUO, Tao , JOHN WILSON, Makesh Pravin , CHANDE, Vinay
IPC: H04L1/18
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive an indication of a mapping between a plurality of sets of hybrid automatic repeat request (HARQ) processes and a corresponding plurality of HARQ process types. The UE may configure one or more HARQ processes of the UE based at least in part on the indication. In some aspects, a base station may transmit, to a UE, an indication of a mapping between a plurality of sets of HARQ processes and a corresponding plurality of HARQ process types. The base station may select a HARQ process, of the plurality of HARQ processes, to be used for a communication with the UE based at least in part on the mapping. Numerous other aspects are provided.
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公开(公告)号：WO2020146140A1
公开(公告)日：2020-07-16
申请号：PCT/US2019/068321
申请日：2019-12-23
Applicant: QUALCOMM INCORPORATED
Inventor： KHOSHNEVISAN, Mostafa , ZHANG, Xiaoxia , SUN, Jing , LUO, Tao , CHENDAMARAI KANNAN, Arumugam , CHANDE, Vinay , JOHN WILSON, Makesh Pravin
IPC: H04L1/18
Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may determine a first hybrid automatic repeat request (HARQ) process identifier set associated with a first configured scheduling process and may determine a second HARQ process identifier set associated with a second configured scheduling process. The UE may assign an HARQ process identifier, included in the first HARQ process identifier set, to a process instance associated with the first configured scheduling process and may assign an HARQ process identifier, included in the second HARQ process identifier set, to a process instance associated with the second configured scheduling process. Numerous other aspects are provided.
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公开(公告)号：WO2019160637A1
公开(公告)日：2019-08-22
申请号：PCT/US2019/013820
申请日：2019-01-16
Applicant: QUALCOMM INCORPORATED
Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may select a transmission beam sequence for a wireless device during a plurality of transmission slots. The transmission beam sequence may indicate a transmission beam that the wireless device will use for its transmissions during a corresponding transmission slot. The wireless device may transmit a broadcast control signal including an indication of the transmission beam sequence. The wireless device may perform wireless transmissions over the plurality of transmission slots according to the transmission beam sequence. Other wireless devices may use the transmission beam sequence to schedule their own transmissions during the plurality of transmission slots.
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