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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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公开(公告)号：US10200872B2
公开(公告)日：2019-02-05
申请号：US14877741
申请日：2015-10-07
Applicant: QUALCOMM Incorporated
Inventor： Iyab Issam Sakhnini , Hao Xu , Peter Gaal
Abstract: Methods, systems, and devices are described for direct current (DC) subcarrier handling for narrowband user equipment (UE). A UE may identify a narrow bandwidth region allocated for operation within a wide bandwidth carrier, determine that the narrow bandwidth region is centered about a different frequency than a center subcarrier of the wide bandwidth carrier, and, accordingly, select an operating mode. Various operating modes may include down-converting a carrier frequency of the allocated narrow bandwidth region. A base station may support narrowband UE operation by determining that the narrow bandwidth region is centered about a different frequency than a center subcarrier of the wide bandwidth carrier and rate matching subcarriers of the narrow bandwidth region around tones of a center frequency of the narrow bandwidth region.
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公开(公告)号：US10200169B2
公开(公告)日：2019-02-05
申请号：US15376025
申请日：2016-12-12
Applicant: QUALCOMM Incorporated
Inventor： Jing Lei , Hao Xu , Wanshi Chen , Xiao Feng Wang , Renqiu Wang , Yongbin Wei , Juan Montojo , Alberto Rico Alvarino , Peter Gaal
Abstract: Methods, systems, and devices for wireless communication are described. A base station may broadcast a synchronization signal using a narrowband portion of a bandwidth of a cell. The synchronization signal may include a sequence repeated over several symbol periods using a cover code to support power-efficient cell acquisition. A user equipment (UE) receiving the synchronization signal may determine frequency and timing information for a cell by performing a weighted combination and accumulation of low complexity autocorrelation and cross-correlation procedures on the synchronization signal. The reduced complexity correlation procedures may be enabled based on the use of the cover code and a base sequence. In some cases, the cross-correlation may be performed at multiple sampling rates. The use of the cover code within the synchronization signal may also support correlation procedures that use recursive or repeated updates, which may allow for further reduced computational complexity relative to other cell search procedures.
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公开(公告)号：US10172157B2
公开(公告)日：2019-01-01
申请号：US15057795
申请日：2016-03-01
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Jelena Damnjanovic , Madhavan Srinivasan Vajapeyam , Peter Gaal , Hao Xu
Abstract: A method, an apparatus, and a computer readable-medium for wireless communication are provided. The apparatus receives data via a first group of component carriers (CCs) of a plurality of groups of aggregated CCs. The first group of CCs correspond to unlicensed or shared frequencies. The apparatus selects a CC from at least two CCs of the first group of CCs for transmission on a physical uplink control channel (PUCCH). The selection of the CC is based on at least an uplink-transmission clearance status of each of the at least two CCs. The apparatus transmits the PUCCH via the selected CC.
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公开(公告)号：US10171216B2
公开(公告)日：2019-01-01
申请号：US15457900
申请日：2017-03-13
Applicant: QUALCOMM Incorporated
Inventor： Shimman Patel , Wanshi Chen , Seyedkianoush Hosseini , Hao Xu , Peter Gaal , Jing Sun
IPC: H04L5/00 , H04B7/06 , H04L1/00 , H04W72/04 , H04W72/14 , H04B7/0452 , H04B7/0413
Abstract: The present disclosure provides a unique control region that is mapped to each data region for DL DMRS transmissions. In addition, the present disclosure provides an updated DCI format that may include DL DMRS transmissions. The apparatus may receive a first content during a first TTI. In an aspect, the content may include at least a control region which includes a DMRS. In addition, a location of the DMRS may be defined by either a closed-loop precoding structure or an open-loop precoding structure. Furthermore, the duration of the first TTI may be shorter than 1 ms. The apparatus may demodulate the control region based at least on the DMRS.
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Patent Agency Ranking
126.发明授权公开(公告)号：US10154483B2
公开(公告)日：2018-12-11
申请号：US13832880
申请日：2013-03-15
Applicant: QUALCOMM Incorporated
Inventor： Hao Xu , Tingfang Ji , Peter Gaal , Durga Prasad Malladi , Wanshi Chen , Yongbin Wei , Kiran Somasundaram
Abstract: Certain aspects provide a method for wireless communications by a first access point, comprising determining a first schedule of intervals for the first access point to communicate with a first group of one or more wireless devices, wherein intervals of the first schedule are synchronized with wake up or transmission cycles of the first group of one or more wireless devices and communicating with the first group of one or more wireless devices according to the first schedule.
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公开(公告)号：US10129877B2
公开(公告)日：2018-11-13
申请号：US15431741
申请日：2017-02-13
Applicant: QUALCOMM Incorporated
Inventor： Alberto Rico Alvarino , Peter Gaal , Hao Xu
Abstract: Methods, systems, devices, or apparatuses may support paging for machine type communication (MTC) devices. In one example, a base station may identify a mode of operation to be used for MTC. Based on the identified mode of operation, the base station may determine a subframe to be used for a paging occasion for a user equipment (UE) with which the base station communicates using MTC. A base station may also repeat a page in a number of subframes according to a repetition level for a paging occasion. The page may be for one or more UEs using MTC. The base station may identify the starting subframe for the paging occasion. The base station may then transmit the page based at least in part on the repetition level, where the page may be scrambled by the base station based at least in part on the starting subframe.
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公开(公告)号：US10129851B2
公开(公告)日：2018-11-13
申请号：US15799908
申请日：2017-10-31
Applicant: QUALCOMM Incorporated
Inventor： Miguel Griot , Madhavan Srinivasan Vajapeyam , Haris Zisimopoulos , Hao Xu
Abstract: Methods, systems, and apparatuses for wireless communication are described. A user equipment (UE) may establish a dynamic coverage enhancement (CE) configuration and then autonomously transition from one CE level to another while in idle mode. The network may blindly detect the CE change during a paging procedure. For example, a mobility management entity (MME) may store dynamic CE information, and it may provide the dynamic CE information to base stations when the UE is paged. In some cases, the base stations may autonomously retransmit paging messages at different CE levels based on the dynamic CE information. In other examples, the MME may direct the base station to retransmit at different CE levels.
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公开(公告)号：US10123313B2
公开(公告)日：2018-11-06
申请号：US14719220
申请日：2015-05-21
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Stefan Geirhofer , Peter Gaal , Hao Xu , Tao Luo
Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. In an aspect, the apparatus may configure at least a first resource set and a second resource set for a control channel. The first and second resource sets may be configured with a common reference signal configuration. The apparatus also configures first rate-matching parameters for the first resource set and second rate-matching parameters for the second resource set. Then, the apparatus transmits the first rate-matching parameters and the second rate-matching parameters and transmits the control channel using the first resource set and the second resource set.
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公开(公告)号：US10110405B2
公开(公告)日：2018-10-23
申请号：US15255069
申请日：2016-09-01
Applicant: QUALCOMM Incorporated
Inventor： Renqiu Wang , Hao Xu , Xiao Feng Wang , Wanshi Chen , Yongbin Wei , Seyed Ali Akbar Fakoorian , Alberto Rico Alvarino , Madhavan Srinivasan Vajapeyam , Jing Lei
Abstract: An apparatus may receive signaling from a base station that indicates different tone indices. The apparatus may further transmit a plurality of symbols in a single tone uplink transmission. In an aspect, groups of symbols in the plurality of symbols are transmitted using the different tone indices of the single tone uplink transmission indicated by the received signaling. A second apparatus may signal to at least one user equipment (UE) information associated with different tone indices for use in transmitting a plurality of symbols in a single tone uplink transmission. The second apparatus may further receive the plurality of symbols in the single tone uplink transmission. In an aspect, pairs of symbols in the plurality of symbols are received in different tone indices of the single tone uplink transmission.
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