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公开(公告)号：US11019656B2
公开(公告)日：2021-05-25
申请号：US16853652
申请日：2020-04-20
Applicant: QUALCOMM Incorporated
Inventor： Madhavan Srinivasan Vajapeyam , Hao Xu , Wanshi Chen
Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may select a coverage enhancement (CE) level based on a coverage limitation. The UE may then receive system information from a base station indicating an index of CE levels and corresponding physical random access channel (PRACH) configurations, and the UE may transmit a random access preamble using the PRACH configuration for the selected CE level. For example, the UE may transmit the preamble based on a frequency offset that corresponds to the selected CE level. In some cases, the UE and base station may also associate groups of preambles with downlink (DL) CE levels. The UE may select a preamble from a group corresponding to a desired DL CE level for a random access response message. The base station may determine the DL CE level based on the group the preamble was selected from and respond accordingly.
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公开(公告)号：US20210153116A1
公开(公告)日：2021-05-20
申请号：US17096089
申请日：2020-11-12
Applicant: QUALCOMM Incorporated
Inventor： Jelena Damnjanovic , Wooseok Nam , Tao Luo , Linhai He , Peter Gaal , Juan Montojo , Peter Pui Lok Ang , Wanshi Chen
IPC: H04W52/02
Abstract: Methods, systems, and devices for wireless communications are described. Generally, the described techniques at a user equipment (UE) provide for efficiently identifying a dormancy state of a secondary cell (SCell) configured for communications with a base station. A UE may be configured with a duration of time for which an SCell is to be in an indicated dormancy state. Accordingly, when the UE receives an indication of a dormancy state for an SCell, the UE may determine that the SCell is in the indicated dormancy state for the duration of time. The UE may also be configured with a default dormancy state of the SCell. Thus, after the duration of time expires, the UE may determine that the SCell is in the default dormancy state (e.g., the UE may fall back to the default dormancy of the SCell after the duration of time expires).
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公开(公告)号：US11013022B2
公开(公告)日：2021-05-18
申请号：US16400743
申请日：2019-05-01
Applicant: QUALCOMM Incorporated
Inventor： Alexandros Manolakos , Jing Jiang , Seyong Park , Hao Xu , Wanshi Chen , Wei Zeng , Peter Gaal , Tingfang Ji
IPC: H04W72/12 , H04L1/00 , H04L5/00 , H04L25/02 , H04L27/26 , H04W76/28 , H04W76/27 , H04W52/18 , H04W28/18
Abstract: The present disclosure provides for adaptive resource management in new radio operations that favors the usage of resources for pilot signals and channel estimation in the transition slots of a slot burst, and the transmission of data in the subsequent slots of the slot burst. A device such as a user equipment (UE) and/or a base station may determine that the UE is operating in a transition state. The device may adapt a first numerology including a first number of symbols per slot used for transmission in the transition slots during the transition state, to a second scaled numerology including a second number of symbols per slot used for transmission in the subsequent slots after the transition state. A ratio of reference signal symbols to data symbol symbols may be greater in the transition slots than in the subsequent slots.
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公开(公告)号：US11012976B2
公开(公告)日：2021-05-18
申请号：US15194045
申请日：2016-06-27
Applicant: QUALCOMM Incorporated
Inventor： Alberto Rico Alvarino , Wanshi Chen , Hao Xu
Abstract: Methods, systems, and devices for wireless communication are described. A device may receive repeated portions (e.g., modulation symbols) of a physical broadcast channel (PBCH) within a subframe. Portions of a PBCH may be repeated during various symbol periods of a subframe, and symbol periods for repetition may be selected based at least in part on locations of reference signals, synchronization signals, or downlink transmissions. Symbol periods that include cell-specific reference signals (CRS) may be used to repeat portions of a PBCH. Modulation symbols of a PBCH that include both broadcast information and CRS may be repeated within a subframe during symbol periods of the subframe than include CRS. Repetitions of portions of the PBCH in the subsequent subframe may be similarly or differently mapped to available resources in the subsequent subframe. Devices may identify characteristics of the PBCH by using differences in phase between repeated portions of the PBCH.
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公开(公告)号：US11012272B2
公开(公告)日：2021-05-18
申请号：US15065272
申请日：2016-03-09
Applicant: QUALCOMM Incorporated
Inventor： Peter Gaal , Wanshi Chen , Hao Xu , Tao Luo , Shimman Arvind Patel
Abstract: Techniques are described for wireless communication. A first method includes inserting channel or interference estimation modulation symbols into a sequence of data modulation symbols; performing a discrete Fourier transform (DFT) on a group of modulation symbols in the sequence of data modulation symbols, the group of modulation symbols including at least one of the channel or interference estimation modulation symbols; and generating a single-carrier frequency domain modulated (SC-FDM) symbol stream based at least in part on an output of the DFT. A second method includes performing an IDFT on a tone-demapped output of a DFT for each of at least one SC-FDM symbol stream, to recover a plurality of data modulation symbols and channel or interference estimation modulation symbols for each of the at least one SC-FDM symbol stream; estimating interference based at least in part on the channel or interference estimation modulation symbols; and decoding the data modulation symbols based at least in part on the estimated interference.
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Patent Agency Ranking
公开(公告)号：US20210144648A1
公开(公告)日：2021-05-13
申请号：US17066644
申请日：2020-10-09
Applicant: QUALCOMM Incorporated
Inventor： Yi Huang , Prashanth Haridas Hande , Jay Kumar Sundararajan , Gokul Sridharan , Wei Yang , Wanshi Chen , Krishna Kiran Mukkavilli , Allen Minh-Triet Tran , Joseph Patrick Burke , Naga Bhushan
Abstract: Generally, the described techniques provide for efficiently transmitting uplink signals to a base station using shared antennas associated with different power classes. A first device may be in communications with a base station using local antennas and may identify a second device having auxiliary antennas available for transmitting uplink signals to the base station. The local and auxiliary antennas may be associated with different power classes, and the first device may transmit a message to a base station indicating that the first device is capable of transmitting using antennas associated with different power classes. The first device may then receive configurations from a base station of different transmit powers to transmit on the antennas associated with the different power classes, and the first device may transmit uplink signals to the base station in accordance with the different transmit power configurations.
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公开(公告)号：US11006395B2
公开(公告)日：2021-05-11
申请号：US16803599
申请日：2020-02-27
Applicant: QUALCOMM Incorporated
Inventor： Kapil Gulati , Arjun Bharadwaj , Sudhir Kumar Baghel , Tien Viet Nguyen , Wanshi Chen , Shailesh Patil
Abstract: Aspects of the present disclosure provide a method for wireless communications by a peer device. The method generates control information to schedule peer-to-peer communication. The control information includes a first portion with a first set of data and a second portion with a second set of data. The method then transmits the first portion of the control information in a first stage using first time and frequency resources. The first portion indicates a control information format of the second portion. The method further transmits the second portion of the control information in a second stage using second time and frequency resources and the indicated control information format.
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公开(公告)号：US10980067B2
公开(公告)日：2021-04-13
申请号：US16790711
申请日：2020-02-13
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Wanshi Chen , Seyong Park
Abstract: Methods, systems, and devices for wireless communications are described for a two-step random access channel (RACH) procedure in which uplink random access preamble and message transmission occasions may span multiple transmission slots. Reference signal resources for transmitting a reference signal with a first random access message of the two-step RACH procedure may include at least one symbol in each of the multiple transmission slots. The reference signal resources, reference signal sequence, or both, may be identified based on a particular uplink random access message transmission occasion, random access preamble transmission occasion, random access preamble sequence configuration, or any combinations thereof.
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269.发明申请公开(公告)号：US20210105808A1
公开(公告)日：2021-04-08
申请号：US17039982
申请日：2020-09-30
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Linhai He , Wanshi Chen
Abstract: Methods, systems, and devices for wireless communication are described. Generally, the described techniques provide for efficiently signaling configurations of physical resources and transmission parameters to a user equipment (UE) for small data transmissions (for example, data transmissions in an inactive or idle state). A base station may broadcast or multicast downlink control information (DCI) in one or more control channels that schedules data transmissions in a set of data channels. The base station may then multicast one or more configurations in each of the data channels, and a UE may decode one of the data channels to determine a configuration for a small data transmission. Because the configurations may be transmitted in the data channels in addition to system information or paging information, a base station may have access to sufficient resources to provide suitable configurations to a UE for communications in an inactive or idle state.
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公开(公告)号：US20210105754A1
公开(公告)日：2021-04-08
申请号：US17110025
申请日：2020-12-02
Applicant: QUALCOMM Incorporated
Inventor： Shimman Arvind Patel , Wanshi Chen , Peter Gaal
Abstract: Methods, systems, and devices for wireless communication using various patterns of data and reference signals are described. For example, in a system that supports operation using different duration transmission time intervals (TTIs), a base station may initiate communication with a user equipment (UE) or between two UEs, and UEs may communicate with the base station or with one another using an indicated pattern of data and reference signals. The base station may send a downlink control message indicating a transmission pattern selected from a set of patterns. UEs may identify the pattern based on the indicator and decode a sequence of data and reference signals based on the pattern. In some examples, the sequence may include a set of TTIs, which may have a shorter duration than other TTIs.
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