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公开(公告)号：US10433339B2
公开(公告)日：2019-10-01
申请号：US15090859
申请日：2016-04-05
Applicant: QUALCOMM Incorporated
Inventor： Shimman Arvind Patel , Wanshi Chen , Aleksandar Damnjanovic
Abstract: Wireless devices may exchange data related to multiple available random access procedures for network access. A random access procedure of the available random access procedures may be selected, and a random access message transmitted based on the selected random access procedure. Available random access procedures may include procedures that provide for a different number of random access messages or that are for use in communications having different transmission time intervals (TTIs). For example, a random access procedure may include a total of two random access messages or a total of four random access messages for accessing the wireless communications network. The use of one random access procedure instead of the other may depend on a wireless device's location relative to its serving base station.
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公开(公告)号：US10432386B2
公开(公告)日：2019-10-01
申请号：US15191452
申请日：2016-06-23
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Shimman Arvind Patel , Juan Montojo , Hao Xu , Aleksandar Damnjanovic
Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may identify a configuration for uplink and downlink communications that defines subframe configuration options for each subframe of a frame. For example, the configuration may establish parameters for time division duplexing (TDD) operation between a base station and a user equipment (UE). The wireless device may determine a constraint for a subframe of the frame based on the configuration and determine an adaptive subframe configuration based on the constraint. The adaptive subframe configuration may include one or several downlink symbol periods and one or several uplink symbol periods. The wireless device may communicate during the subframe according to the adaptive subframe configuration rather than the original configuration. The adaptive subframe may be constrained by the identified uplink and downlink configuration, which may avoid disruption to UEs.
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公开(公告)号：US10412716B2
公开(公告)日：2019-09-10
申请号：US15886584
申请日：2018-02-01
Applicant: QUALCOMM Incorporated
Inventor： Seyedkianoush Hosseini , Wanshi Chen , Shimman Arvind Patel
Abstract: Aspects of the present disclosure describe communicating control data based on reference signals in wireless communications. A timeline for transmitting uplink communications can be determined, where the timeline can relate to whether to process downlink communications based on at least one of a first type of reference signal (RS) or a second type of RS, a length or number of symbols in the reference signal, or a timing advance.
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公开(公告)号：US20190215859A1
公开(公告)日：2019-07-11
申请号：US16355105
申请日：2019-03-15
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Wanshi Chen , Peter Gaal , Shimman Arvind Patel , Aleksandar Damnjanovic , Hao Xu , Juan Montojo
Abstract: Methods, systems, and devices for wireless communication are described. Different transmission time interval (TTI) durations may be supported and configured to coexist with one another. A set of TTIs with a relatively short duration may overlap in time with longer duration TTIs. Boundaries of TTIs with a relatively short duration may be configured to align with boundaries of relatively longer duration TTIs. For example, TTIs that are a Long Term Evolution (LTE) subframe, an LTE slot, and a duration of two LTE symbol periods may be supported. Two-symbol period TTIs may align with or be embedded within slot-duration TTIs, which, in turn, may align with or be embedded within a subframe. In some examples, one or more symbol periods of a subframe may be designated as a gap between two-symbol TTIs within the subframe, or such symbols may be merged with a two-symbol TTI within the subframe.
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公开(公告)号：US20190200352A1
公开(公告)日：2019-06-27
申请号：US16223834
申请日：2018-12-18
Applicant: QUALCOMM Incorporated
Inventor： Seyedkianoush Hosseini , Wanshi Chen , Shimman Arvind Patel
CPC classification number: H04W72/0446 , H04L1/1812 , H04W72/042
Abstract: Methods, systems, and devices for wireless communications are described. The described techniques generally support downlink transmissions. For example, a user equipment (UE) may receive a resource configuration for reception of a downlink transmission within a repetition window, the resource configuration including an indicator of a repetition window size for the downlink transmission. The UE may monitor, according to the resource configuration, one or more transmission time intervals (TTIs) of the repetition window for reception of the downlink transmission. In some cases, the downlink transmission may be a grant-free downlink transmission. Here, the UE may attempt to decode the grant-free downlink transmission during the one or more TTIs based at least in part on the repetition window size. Using the described techniques, the UE may efficiently determine one or more decoding parameters for the grant-free downlink transmission, thereby providing benefits in terms of latency reduction, power consumption, etc.
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Patent Agency Ranking
公开(公告)号：US10334577B2
公开(公告)日：2019-06-25
申请号：US15443933
申请日：2017-02-27
Applicant: QUALCOMM Incorporated
Inventor： Shimman Arvind Patel , Wanshi Chen , Seyedkianoush Hosseini , Jing Sun , Peter Gaal
Abstract: Methods, systems, and devices for wireless communication are described. In one example, an indication in a first control message in a control region of a first transmission time interval (TTI) identifies a data region of the first TTI. A data region of the second TTI may be identified based on a grant of resources received in a second control message of a second TTI, where the data region of the first TTI and the control region of the second TTI are frequency division multiplexed with the data region of the second TTI. Other examples include a downlink grant at the beginning of a control region and uplink grants at the end of the control region. In other examples, a downlink grant for a user equipment (UE) may include an indication of resources allocated to the UE in that resource block and a second resource block.
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公开(公告)号：US10314037B2
公开(公告)日：2019-06-04
申请号：US15642104
申请日：2017-07-05
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Seyedkianoush Hosseini , Peter Gaal , Srinivas Yerramalli , Hao Xu , Jing Sun , Shimman Arvind Patel , Aamod Khandekar
Abstract: Methods, systems, and devices for wireless communication are described that provide for reduced timing between certain downlink communications and responsive uplink communications relative to certain legacy systems (e.g., legacy LTE systems). A user equipment (UE) or base station may be capable of operating using two or more timing configurations that each include an associated time period between receipt of a downlink communication (e.g., a grant of uplink resources or shared channel data) and a responsive uplink communication (e.g., an uplink transmission using the granted uplink resources or feedback of successful reception of the shared channel data). In cases where a UE or base station are capable of two or more timing configurations, a timing configuration for a transmission may be determined and the responsive uplink communication transmitted according to the determined timing configuration.
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138.发明授权公开(公告)号：US10306632B2
公开(公告)日：2019-05-28
申请号：US14865640
申请日：2015-09-25
Applicant: QUALCOMM Incorporated
Inventor： Peter Gaal , Srinivas Yerramalli , Durga Prasad Malladi , Naga Bhushan , Yongbin Wei , Tao Luo , Hao Xu , Wanshi Chen , Shimman Arvind Patel , Aleksandar Damnjanovic , Xiaoxia Zhang
Abstract: Techniques are described for wireless communication. A first method includes winning a contention for access to an unlicensed radio frequency spectrum band, and transmitting at least a portion of a channel usage beacon signal (CUBS) over the unlicensed radio frequency spectrum band. The at least portion of the CUBS is transmitted in a number of frequency interlaces of the unlicensed radio frequency spectrum band. A second method includes winning a contention for access to an unlicensed radio frequency spectrum band; determining whether the contention is won within a threshold time before a next symbol period boundary; and transmitting at least a portion of a CUBS over the unlicensed radio frequency spectrum band. The at least portion of the CUBS is transmitted during a preamble including a fractional period of a first symbol period. The at least portion of the CUBS may be based at least in part on the determining.
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公开(公告)号：US10257796B2
公开(公告)日：2019-04-09
申请号：US15789889
申请日：2017-10-20
Applicant: QUALCOMM Incorporated
Inventor： Shimman Arvind Patel , Tao Luo , Naga Bhushan , Peter Gaal , Hao Xu
Abstract: Methods, systems, and devices are described for wireless communication. One method may include receiving, at a first base station, at least one clear channel assessment (CCA)-exempt transmission (CET) indicating timing information of at least a second base station over a shared spectrum. A timing of the first base station may be adjusted based on the received timing information of the second base station. Another method of wireless communication may include identifying a CCA slot assigned to a first base station for a frame, which may be associated with time synchronization, of a shared spectrum. A CCA may be performed at the identified CCA slot for the frame. When the CCA is successful, a first timing information of the first base station may be selectively transmitted during the frame. When the CCA is unsuccessful, a second timing information of a second base station may be listened for during the frame.
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公开(公告)号：US20190075580A1
公开(公告)日：2019-03-07
申请号：US16160854
申请日：2018-10-15
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Durga Prasad Malladi , Peter Gaal , Yongbin Wei , Hao Xu , Shimman Arvind Patel , Aleksandar Damnjanovic
Abstract: Methods, systems, and devices for wireless communication are described. A receiving device may detect a signal associated with low latency transmissions and decode a non-low latency communication accordingly. The receiving device may receive an indicator from a transmitting device that indicates where and when low latency communications occur. The indication may specify frequency resources or symbols used by the low latency communication. The indicator may be transmitted during the same subframe as the low latency communication, at the end of a subframe, or during a subsequent subframe. The receiving device may use the indicator to mitigate low latency interference, generate channel estimates, and reliably decode the non-low latency communication. In some cases, the interfering low latency communication may occur within the serving cell of the receiving device; or the interfering low latency communication may occur in a neighboring cell.
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