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公开(公告)号：US20220360380A1
公开(公告)日：2022-11-10
申请号：US17655333
申请日：2022-03-17
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Qunfeng He , Muhammad Nazmul Islam , Linhai He , Peter Gaal , Hari Sankar , Carsten Aagaard Pedersen , Murali Menon , Alexei Yurievitch Gorokhov
IPC: H04L5/00
Abstract: Certain aspects of the present disclosure provide techniques for power savings for reduced capability devices. A method that may be performed by a user equipment (UE) includes receiving a shared bandwidth part (BWP) configuration and a group common BWP configuration. The group common BWP configuration indicates a group common BWP shared by a group of UEs, including the UE, having one or more common capabilities or a common UE type. The method includes communicating using the group common BWP based on the group common BWP configuration.
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公开(公告)号：US20220353913A1
公开(公告)日：2022-11-03
申请号：US17868588
申请日：2022-07-19
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Linhai He , Hung Dinh Ly , Seyong Park , Naga Bhushan , Ying Wang , Wanshi Chen , Joseph Binamira Soriaga
Abstract: Fallback procedures for user equipments (UEs) are described that provide efficient fallback to a four-step random access procedure from a two-step random access procedure. For example, after transmitting a first message of a two-step random access procedure, a UE may start a fallback timer or counter and monitor for a second message of the two-step random access procedure for the duration of the fallback timer or counter. At the expiration of the fallback timer or counter, the UE may fall back to a four-step random access procedure. In some cases, the UE may transmit multiple repetitions of the first message and monitor for responses after transmitting the repetitions or after each repetition. Additionally, or alternatively, the base station may transmit an explicit signal to the UE that may signal to the UE to perform a fallback procedure at a beginning or middle of a random access procedure.
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公开(公告)号：US11490346B2
公开(公告)日：2022-11-01
申请号：US16736394
申请日：2020-01-07
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Hung Dinh Ly , Linhai He , Wanshi Chen
Abstract: In some aspects, a user equipment (UE) determines a transmission gap adjustment (TGA) for a first message (msgA) of a 2 step random access channel (RACH) procedure based on measurement of a reference signal transmitted by a base station as well as the radio resource configuration (RRC) configurations for msgA. In other aspects, a base station transmits a system information block (SIB) or RRC signaling that indicates at least one possible configuration of the TGA, and UEs determine the TGA depending on RRC state. Connected mode UEs having a timing alignment (TA) timer running may determine the TGA based on a previous TA. UEs in other RRC modes determine the TGA based on the possible configuration transmitted in the SIB or RRC signaling. Advantageously, 2 step RACH UEs are able to communicate with the base station without the closed loop TA information provided by a 4 step RACH.
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公开(公告)号：US11470649B2
公开(公告)日：2022-10-11
申请号：US16742597
申请日：2020-01-14
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Peter Gaal , Joseph Binamira Soriaga , Wanshi Chen , Seyong Park
Abstract: Methods, systems, and devices for wireless communications are described in which a UE may determine a time duration of a transmission gap between a random access preamble and random access payload. The time duration of the transmission gap may be based on a configuration of the random access channel resources, a timing adjustment (e.g., an estimated propagation delay) for uplink transmissions from the UE, a beam management procedure at the UE and/or the base station, or combinations thereof. The UE may select an initial transmission gap duration based on the configuration of the random access channel resources, and may adjust the initial transmission gap duration based on the timing adjustment. Multiple UEs may be configured such that random access channel transmissions align with a random access occasion (RO) window. A base station may decode messages from multiple UEs using joint or successive decoding to recover the corresponding random access messages.
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35.发明授权公开(公告)号：US11470614B1
公开(公告)日：2022-10-11
申请号：US17651366
申请日：2022-02-16
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Peter Gaal , Wanshi Chen
Abstract: An apparatus for wireless communication includes a transmitter configured to communicate with a base station based on a first uplink bandwidth part (BWP) that includes a first frequency subset and that further includes a second frequency subset. The apparatus further includes a receiver configured to receive, from the base station, one or more messages including a frequency hopping indicator that specifies whether a frequency hopping mode is enabled or disabled. The transmitter is further configured to transmit, to the base station, an uplink control channel transmission using both the first frequency subset and the second frequency subset based on the frequency hopping indicator specifying that the frequency hopping mode is enabled or using one of the first frequency subset or the second frequency subset based on the frequency hopping indicator specifying that the frequency hopping mode is disabled.
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Patent Agency Ranking
公开(公告)号：US20220295567A1
公开(公告)日：2022-09-15
申请号：US17824796
申请日：2022-05-25
Applicant: QUALCOMM Incorporated
Abstract: Methods, systems, and devices for wireless communications are described. In a random access (RACH) procedure, a user equipment (UE) may transmit a first RACH message (e.g., RACH Message A (MsgA)) to a base station, which may include an indication of a modulation order, a maximum number of repetitions for RACH Message B (MsgB) data, or both. The base station may multiplex random access responses (RARs) for UEs into second RACH messages (e.g., RACH MsgBs) based on the indication(s) and may transmit these RACH MsgBs. The UE may receive and decode a downlink control information (DCI) portion of a RACH MsgB but may determine not to decode the data portion of the RACH MsgB if an indication in the DCI of the modulation order, the threshold number of repetitions, or both does not match the value reported by the UE. Otherwise, the UE may decode the full RACH MsgB.
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公开(公告)号：US11445561B2
公开(公告)日：2022-09-13
申请号：US16783985
申请日：2020-02-06
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Wanshi Chen , Peter Gaal , Joseph Binamira Soriaga
Abstract: Aspects described herein relate to determining a failure associated with reception, by a base station, of an initial transmission of a random access message transmitted by the UE in a two-step random access procedure, and based on determining the failure situations associated with reception of the random access message, configuring the parameters of a retransmission and/or retransmitting at least a portion of the random access message.
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公开(公告)号：US20220240307A1
公开(公告)日：2022-07-28
申请号：US17686820
申请日：2022-03-04
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Wanshi Chen , Linhai He
Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may perform a random access channel (RACH) procedure with a base station. The UE may receive a message configuring a RACH preamble occasion and an uplink data occasion. The message may be a radio resource control (RRC) message or a system information (SI) message. In some cases, the UE may determine if the RACH preamble occasion, the uplink data occasion, or both are restricted for cancellation based on the message. The UE may determine when to monitor a downlink control channel for dynamic scheduling based on determining which occasions are restricted for cancellation and may transmit a RACH message based on monitoring—or not monitoring—the downlink control channel for dynamic scheduling preempting a RACH occasion. In some other cases, a base station may schedule transmissions to not overlap with configured RACH occasions.
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公开(公告)号：US11297645B2
公开(公告)日：2022-04-05
申请号：US17031537
申请日：2020-09-24
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Wanshi Chen , Linhai He
Abstract: Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may perform a random access channel (RACH) procedure with a base station. The UE may receive a message configuring a RACH preamble occasion and an uplink data occasion. The message may be a radio resource control (RRC) message or a system information (SI) message. In some cases, the UE may determine if the RACH preamble occasion, the uplink data occasion, or both are restricted for cancellation based on the message. The UE may determine when to monitor a downlink control channel for dynamic scheduling based on determining which occasions are restricted for cancellation and may transmit a RACH message based on monitoring—or not monitoring—the downlink control channel for dynamic scheduling preempting a RACH occasion. In some other cases, a base station may schedule transmissions to not overlap with configured RACH occasions.
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公开(公告)号：US20220104109A1
公开(公告)日：2022-03-31
申请号：US17466915
申请日：2021-09-03
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Yongjun Kwak , Linhai He , Miguel Griot , Wanshi Chen , Peter Gaal , Aziz Gholmieh
Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to receive first system information from a base station, the first system information being for reduced-capability UEs including UEs with a bandwidth capability below a threshold, the UE being a reduced-capability UE. The UE may evaluate the first system information for a dedicated field that includes an indicator that additional system information for reduced-capability UEs is to be received in response to on-demand requests. Subsequently, the UE may obtain the additional system information for reduced-capability UEs in accordance with information included in either the dedicated field when the dedicated field is included in the first system information or in a configuration information element of the first system information when the dedicated field is absent from the first system information.
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