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公开(公告)号：US09949292B2
公开(公告)日：2018-04-17
申请号：US14480553
申请日：2014-09-08
Applicant: QUALCOMM Incorporated
Inventor： Naga Bhushan , Aleksandar Damnjanovic , Tingfang Ji , Peter Gaal , Durga Prasad Malladi
CPC classification number: H04W74/08 , H04L5/0091 , H04W36/22 , H04W74/0808
Abstract: Methods, systems, and devices are described contention-based channel access procedures that may enhance efficiency in communications using unlicensed spectrum. A time period may be identified during which base stations perform contention-based downlink channel access procedures for access to a channel in an unlicensed spectrum. The base stations may be coordinated such that different base stations may seek channel access during different time intervals during the time period. Contention-based uplink channel access procedures for UEs may then be modified to favor one or more UEs that are associated with a base station that has won channel access.
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公开(公告)号：US09929844B2
公开(公告)日：2018-03-27
申请号：US14866428
申请日：2015-09-25
Applicant: QUALCOMM Incorporated
Inventor： Aleksandar Damnjanovic , Durga Prasad Malladi , Tao Luo , Yongbin Wei , Peter Gaal , Wanshi Chen , Hao Xu
CPC classification number: H04L5/0053 , H04L27/261 , H04W16/14 , H04W74/0816
Abstract: A device may determine that an unlicensed radio frequency (RF) spectrum band is available for a communication. The device may transmit a first transmission indicator that indicates that the device is transmitting information via the unlicensed RF spectrum band. The first transmission indicator may be associated with a first radio access technology. The device may transmit a second transmission indicator that indicates that the device is transmitting information via the unlicensed RF spectrum band. The second transmission indicator may be associated with a second radio access technology that is different from the first radio access technology.
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公开(公告)号：US09894617B2
公开(公告)日：2018-02-13
申请号：US14812996
申请日：2015-07-29
Applicant: QUALCOMM Incorporated
Inventor： Durga Prasad Malladi , Juan Montojo
Abstract: Systems and methodologies are described that facilitate utilizing power control preambles with closed loop power control techniques in a wireless communication environment. An uplink grant can be transferred over a downlink (e.g., a first uplink grant after uplink inactivity), and a power control preamble can be sent over an uplink in response to the uplink grant. According to an example, transmission of the power control preamble can be explicitly scheduled and/or implicitly scheduled. The power control preamble can be transmitted at a power level determined by an access terminal utilizing an open loop power control mechanism. A base station can analyze the power control preamble and generate a power control command based thereupon to correct the power level employed by the access terminal. The access terminal can thereafter utilize the power control command to adjust the power level for uplink data transmission.
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公开(公告)号：US20180041966A9
公开(公告)日：2018-02-08
申请号：US14812996
申请日：2015-07-29
Applicant: QUALCOMM Incorporated
Inventor： Durga Prasad Malladi , Juan Montojo
Abstract: Systems and methodologies are described that facilitate utilizing power control preambles with closed loop power control techniques in a wireless communication environment. An uplink grant can be transferred over a downlink (e.g., a first uplink grant after uplink inactivity), and a power control preamble can be sent over an uplink in response to the uplink grant. According to an example, transmission of the power control preamble can be explicitly scheduled and/or implicitly scheduled. The power control preamble can be transmitted at a power level determined by an access terminal utilizing an open loop power control mechanism. A base station can analyze the power control preamble and generate a power control command based thereupon to correct the power level employed by the access terminal. The access terminal can thereafter utilize the power control command to adjust the power level for uplink data transmission.
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公开(公告)号：US09882623B2
公开(公告)日：2018-01-30
申请号：US14850737
申请日：2015-09-10
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Tao Luo , Siddhartha Mallik , Yongbin Wei , Durga Prasad Malladi
IPC: H04W4/00 , H04B7/06 , H04B7/0456 , H04L1/00 , H04W72/12 , H04B7/0452
CPC classification number: H04B7/0619 , H04B7/0452 , H04B7/0456 , H04B7/0626 , H04B7/0632 , H04B7/0636 , H04L1/0025 , H04L1/0026 , H04L1/0028 , H04W72/1226
Abstract: Dual-thread feedback for non-orthogonal channels used in wireless communications systems is described. A first feedback thread may employ transmission strategy (TS) independent feedback and a second feedback thread may employ TS dependent feedback. The first feedback thread may include channel feedback from channel measurements (e.g., channel gain, noise covariance, etc.) and may be fed back periodically. A TS space may be determined that includes combinable TSs for UEs that may be grouped for non-orthogonal techniques, and one or more TS sets may be sent to the UEs. UEs may determine channel quality and/or other channel state information (CSI) for the TSs and report CSI for one or more TSs of the TS sets in a second feedback thread. Scheduling may be performed for transmissions to the UEs based on the feedback in the first and/or second feedback threads.
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Patent Agency Ranking
46.发明授权公开(公告)号：US09867187B2
公开(公告)日：2018-01-09
申请号：US14807024
申请日：2015-07-23
Applicant: QUALCOMM Incorporated
Inventor： Yongbin Wei , Durga Prasad Malladi , Tao Luo , Srinivas Yerramalli , Aleksandar Damnjanovic , Hao Xu , Peter Gaal , Wanshi Chen
CPC classification number: H04W72/0453 , H04L27/2601 , H04W72/0413 , H04W72/1268 , H04W74/0833
Abstract: Techniques for wireless communications over a shared radio frequency spectrum band, may include techniques for transmitting uplink data transmissions using allocated uplink resources. Allocated uplink resources may include an uplink channel comprising a number of allocated interlaces of resource blocks (RBs) for use by a user equipment (UE). An incoming data stream may be processed and data separated into each of the allocated interlaces of RBs for the UE. Such separation may be through demultiplexing the data stream to obtain data for the allocated interlaces of RBs. The demultiplexed data may be mapped onto associated resource elements associated with the allocated interlaces of RBs, and transmitted. Different types of uplink channels, such as a physical uplink control channel (PUCCH), physical uplink shared channel (PUSCH) and/or a physical random access channel (PRACH) may be allocated to interlaces of RBs in one or more subframes of a transmitted radio frame.
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公开(公告)号：US09867129B2
公开(公告)日：2018-01-09
申请号：US15335386
申请日：2016-10-26
Applicant: QUALCOMM Incorporated
Inventor： Hao Xu , Durga Prasad Malladi , Yongbin Wei , Peter Gaal , Wanshi Chen , Aleksandar Damnjanovic , Tao Luo
CPC classification number: H04W52/0225 , H04B7/14 , H04L5/0007 , H04W52/0206 , H04W52/0209 , H04W52/0216 , H04W52/0229 , H04W74/0833 , H04W88/04 , H04W88/08 , Y02B70/30 , Y02D70/00 , Y02D70/122 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/146 , Y02D70/21 , Y02D70/24 , Y02D70/25
Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus identifies first entity and transmits a very low duty cycle signal (LDCS) configuration of the first entity. The apparatus may comprise, e.g., an LPN that is not in a dormant state or a macrocell. The apparatus may receive LDCS information for the first entity. The apparatus may determine the LDCS configuration and transmit the LDCS configuration to the first entity.
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公开(公告)号：US20170347382A1
公开(公告)日：2017-11-30
申请号：US15682219
申请日：2017-08-21
Applicant: QUALCOMM Incorporated
Inventor： Tingfang JI , Tao Luo , Naga Bhushan , Durga Prasad Malladi , Yongbin Wei , Peter Gaal , Aleksandar Damnjanovic , Wanshi Chen , Srinivas Yerramalli
CPC classification number: H04W74/0866 , H04J3/16 , H04J13/10 , H04L5/0041 , H04L5/0048 , H04L5/0053 , H04L5/0094 , H04W16/14 , H04W72/0453 , H04W74/002
Abstract: Uplink waveforms for operating long term evolution (LTE) in an unlicensed band (i.e., long term evolution-unlicensed (LTE-U) communication) are disclosed. Carrier aggregation (CA) and standalone (SA) are disclosed. LTE on the licensed channel may provide both control and data, LTE on the unlicensed channel may provide data. Managing variable transmission time interval (TTI) continuous transmission is disclosed for transmission over multiple subframes of an unlicensed carrier in LTE-U. Listen-before-talk (LBT) requirements of unlicensed carriers provide for additional channel occupancy constraints when scheduling resources for multiple UEs for variable TTI continuous uplink transmissions over multiple subframes. A joint control channel is disclosed that provides control information for all of the potentially available subframes to be scheduled for the uplink transmissions. In addition to management of the variable TTI continuous transmissions, adjustments to uplink signal parameters are also disclosed that address the constraints due to the LBT requirements of unlicensed carriers.
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公开(公告)号：US09825745B2
公开(公告)日：2017-11-21
申请号：US15161113
申请日：2016-05-20
Applicant: QUALCOMM Incorporated
Inventor： Aleksandar Damnjanovic , Wanshi Chen , Peter Gaal , Durga Prasad Malladi , Tao Luo , Yongbin Wei , Hao Xu
CPC classification number: H04L5/005 , H04L5/0053 , H04W56/0045 , H04W72/0406
Abstract: Methods, systems, and devices are described for supporting common reference signaling in wireless communications systems. Some configurations introduce a phase discontinuity between common reference signal (CRS) transmissions on different subframes. This may address issues that may arise when a reduced CRS periodicity is utilized. Indicators may also be transmitted from base stations to user equipment (UEs) to indicate whether phase continuity may be assumed or not. Some configurations may support CRS sequence initialization. These tools and techniques may utilize an extended CRS sequence periodicity, which may increase the number of CRS sequences transmitted by a cell.
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公开(公告)号：US09794922B2
公开(公告)日：2017-10-17
申请号：US14836183
申请日：2015-08-26
Applicant: QUALCOMM Incorporated
Inventor： Hao Xu , Peter Gaal , Wanshi Chen , Shimman Arvind Patel , Durga Prasad Malladi , Yongbin Wei , Aleksandar Damnjanovic , Onkar Dabeer
CPC classification number: H04W72/042 , H04L1/00 , H04L5/0007 , H04L5/0044 , H04L5/0064 , H04W72/0446 , H04W72/14 , H04W88/02
Abstract: An example data structure for managing user equipment communications in a wireless communications system is presented, as well as methods and apparatuses configured to implement the data structure. For instance, the data structure may include a downlink subframe comprising two slots and including one or more quick downlink channels having a single-slot transmission time interval. In addition, the example data structure may include one or more resource element blocks each comprising one or more resource elements into which a frequency bandwidth is divided within one or both of the two slots, wherein each of the one or more resource element blocks comprises a control channel region or a data channel region. Furthermore, the example data structure may include one or more resource grants, located within one or more control channel regions, for one or more user equipment served by the one or more quick downlink channels.
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