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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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283.发明申请公开(公告)号：US20170280475A1
公开(公告)日：2017-09-28
申请号：US15467379
申请日：2017-03-23
Applicant: QUALCOMM Incorporated
Inventor： Srinivas Yerramalli , Aleksandar Damnjanovic , Peter Gaal , Juan Montojo
Abstract: Techniques are described for wireless communication. One method for wireless communication at a user equipment (UE) includes receiving, over the air, information indicative of at least one type of LBT procedure to perform for an uplink transmission; identifying, from the received information, the at least one type of LBT procedure to perform for the uplink transmission; and performing, for a shared spectrum, the at least one type of LBT procedure for the uplink transmission. One method for wireless communication at a network access device includes scheduling an uplink transmission of a UE in a shared spectrum, and transmitting, over the air, information indicative of at least one type of LBT procedure to perform for the uplink transmission.
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公开(公告)号：US09750048B2
公开(公告)日：2017-08-29
申请号：US14864756
申请日：2015-09-24
Applicant: QUALCOMM Incorporated
Inventor： Aleksandar Damnjanovic , Madhavan Srinivasan Vajapeyam , Wanshi Chen , Onkar Jayant Dabeer , Shimman Patel , Hao Xu , Jelena Damnjanovic
CPC classification number: H04W72/14 , H04L1/0003 , H04L5/001 , H04L5/0055 , H04W72/042 , H04W72/1278 , H04W74/006 , H04W76/28 , H04W88/02
Abstract: Apparatus and methods, in one or more aspect, provide feedback with respect to downlink grant feedback communications received by a user equipment (UE). The apparatus and methods monitor for signals from a network entity on one or more channels, and determine, based on the monitoring, whether one or more grants are received and whether UE data is received on the one or more channels. Further, the apparatus and methods generate a feedback indication having a feedback value determined according to a feedback rule and based on whether the one or more grants and the UE data are received. Additionally, the apparatus and methods transmit the feedback indication to the network entity on a resource determined according to the feedback rule and based on whether the one or more grants and the UE data are received.
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公开(公告)号：US09750044B2
公开(公告)日：2017-08-29
申请号：US14262547
申请日：2014-04-25
Applicant: QUALCOMM Incorporated
Inventor： Hao Xu , Peter Gaal , Wanshi Chen , Tao Luo , Tingfang Ji , Aleksandar Damnjanovic
CPC classification number: H04W72/1273 , H04W56/0015 , H04W72/1268
Abstract: Certain aspects relate to techniques and apparatus for network synchronization by network listening. Aspects include transmitting a synchronization signal for a base station (BS) to use for acquiring synchronization with the network. Aspects include listening for a synchronization signal from a BS to use for acquiring network synchronization. In aspects, a method for wireless communications by a BS is provided. The method generally includes acquiring synchronization with a network based on a first synchronization signal transmitted from a primary BS or a secondary BS, determining a synchronization stratum for the BS based on whether the BS acquired synchronization with the network from the primary BS or from the secondary BS, and transmitting a second synchronization signal for one or more other BSs to use for acquiring synchronization with the network, wherein the transmitting is based, at least in part on the determined synchronization stratum.
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Patent Agency Ranking
公开(公告)号：US09743432B2
公开(公告)日：2017-08-22
申请号：US14493067
申请日：2014-09-22
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：US09743363B2
公开(公告)日：2017-08-22
申请号：US14743312
申请日：2015-06-18
Applicant: QUALCOMM Incorporated
Inventor： Onkar Jayant Dabeer , Aleksandar Damnjanovic , Srinivas Yerramalli , Wanshi Chen , Kiran Kumar Somasundaram , Naga Bhushan
CPC classification number: H04W52/246 , H04B7/0874 , H04W52/225 , H04W52/241 , H04W52/243 , H04W52/262 , H04W74/0808
Abstract: Techniques are described for contention-based wireless communications channel access that may improve the likelihood that a contention procedure will pass and allow a device to transmit an uplink or downlink transmission using the contention-based channel. Various disclosed techniques may determine a transmit power for a subsequent transmission based on channel characteristics during one or more clear channel assessment (CCA) time durations. The transmit power may be selected to provide a CCA threshold that may increase the likelihood that a device will win contention for the channel during the CCA procedure.
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公开(公告)号：US20170230838A1
公开(公告)日：2017-08-10
申请号：US15416923
申请日：2017-01-26
Applicant: QUALCOMM Incorporated
Inventor： Srinivas Yerramalli , Tao Luo , Peter Gaal , Aleksandar Damnjanovic
Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) operating in unlicensed spectrum may determine that a base station is not transmitting during a particular time period (e.g., by detecting the absence of a control signal). The UE may then perform a listen-before-talk (LBT) procedure and, if the channel is available, may perform an autonomous uplink (UL) transmission. The autonomous UL transmission may include control information to facilitate decoding. Thus, the base station may receive the control information, and decode the rest of the autonomous UL transmission accordingly. The base station may configure the UE for autonomous UL transmissions when the radio link is established, and may also send dynamic configuration information to initiate, suspend, or reconfigure parameters for autonomous UL transmissions.
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公开(公告)号：US09723651B2
公开(公告)日：2017-08-01
申请号：US14935051
申请日：2015-11-06
Applicant: QUALCOMM Incorporated
Inventor： Ozcan Ozturk , Jun Wang , Aleksandar Damnjanovic , Madhavan Srinivasan Vajapeyam , Ravindra Manohar Patwardhan
CPC classification number: H04W76/046 , H04W36/0016 , H04W36/0094 , H04W52/0212 , H04W68/02 , H04W76/27 , H04W76/28 , H04W88/06 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/146 , Y02D70/24
Abstract: Semi-connected state operation for UEs in multiple-access networks is described. In the semi-connected state, UEs may monitor system information and paging, and mobility may be UE-controlled. Base stations may determine whether to transition UEs from the connected state to the semi-connected state based on capabilities, priority, data connections, or loading conditions. Base stations may maintain context information and logical traffic connections for UEs while UEs continue to be served by the base station in the semi-connected state. Thus, when a transition from the semi-connected state to the connected state occurs, the base station does not have to re-establish security parameters, nor re-establish logical traffic connections within the network for carrying control plane and user plane data for the UE. Context information for semi-connected state UEs may be shared between neighboring base stations or base stations within a context area. The techniques may be applied to LTE/LTE-A networks.
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公开(公告)号：US09717071B2
公开(公告)日：2017-07-25
申请号：US14459676
申请日：2014-08-14
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Peter Gaal , Durga Prasad Malladi , Tao Luo , Tingfang Ji , Naga Bhushan , Yongbin Wei , Aleksandar Damnjanovic
CPC classification number: H04W72/04 , H04L5/001 , H04L5/003 , H04L27/0006 , H04W16/14 , H04W72/1215 , H04W74/0833
Abstract: Long term evolution (LTE)/LTE-Advanced (LTE-A) deployments with unlicensed spectrum leverage more efficient LTE communication aspects over unlicensed spectrum, such as over WIFI radio access technology. In order to accommodate such communications, various uplink procedures may be modified in order to handle communications between licensed and unlicensed spectrum with LTE/LTE-A deployments with unlicensed spectrum.
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