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公开(公告)号：US09832629B2
公开(公告)日：2017-11-28
申请号：US14585155
申请日：2014-12-29
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Peter Gaal , Aleksandar Damnjanovic , Michael Mao Wang
CPC classification number: H04W8/005 , H04L5/0048 , H04L5/0073 , H04W56/001 , H04W56/0015 , H04W72/0446 , H04W72/082
Abstract: Base stations (such as small cells) may support active and dormant states. To facilitate state transitions, these cells may transmit discovery signals. The transmission design of both discovery signals and network synchronization signals from small cells should provide for regular periodicity, while supporting the benefit of transitioning between active and dormant states. Disclosed is a method, a computer program product, and an apparatus that determine a first reference signal for at least one of discovery or measurement, and a second reference signal for synchronization, where both the first reference signal and the second reference signal are based on a same type of reference signal.
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公开(公告)号：US20170332401A1
公开(公告)日：2017-11-16
申请号：US15592855
申请日：2017-05-11
Applicant: QUALCOMM Incorporated
Inventor： Jing Sun , Wanshi Chen , Peter Gaal , Shimman Arvind Patel , Aleksandar Damnjanovic , Hao Xu , Juan Montojo
CPC classification number: H04W72/1289 , H04L5/001 , H04L5/0023 , H04L5/0044 , H04L5/0087 , H04L27/2602 , H04L27/2607 , H04W72/0446
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：US09819467B2
公开(公告)日：2017-11-14
申请号：US14819191
申请日：2015-08-05
Applicant: QUALCOMM Incorporated
Inventor： Aleksandar Damnjanovic , Wanshi Chen , Madhavan Srinivasan Vajapeyam , Durga Prasad Malladi , Yongbin Wei , Tao Luo , Peter Gaal
CPC classification number: H04L5/0055 , H04L1/1614 , H04L1/1685 , H04L1/1854 , H04L1/1867 , H04L1/1896 , H04L5/0048
Abstract: Aspects described herein relate to communicating feedback in a wireless network. An indication to communicate feedback for a plurality of subframes to an access network node can be received from the access network node. A plurality of process identifiers related to transport blocks received in the plurality of subframes can be determined. Feedback for the plurality of process identifiers received in the plurality of subframes can be grouped, and the grouped feedback and/or a feedback tag indicative of the plurality of subframes can be transmitted to the access network node.
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公开(公告)号：US09801189B2
公开(公告)日：2017-10-24
申请号：US13897214
申请日：2013-05-17
Applicant: QUALCOMM Incorporated
Inventor： Osok Song , Aleksandar Damnjanovic , Tingfang Ji , Taesang Yoo , Parag Arun Agashe , Madhavan Srinivasan Vajapeyam , Yongbin Wei , Tao Luo , Rajat Prakash , Masato Kitazoe
CPC classification number: H04W72/082 , H04W72/08
Abstract: Methods and apparatus for partitioning resources for enhanced inter-cell interference coordination (eICIC) are provided. Certain aspects involve broadcasting a message indicating time-domain resource partitioning information (RPI), where a user equipment (UE) may be operating in idle mode. With the RPI, the UE may be able to identify protected resources with reduced/eliminated interference from neighboring cells. The RPI in this broadcasted message may be encoded as a bitmap as an alternative or in addition to enumeration of the U/N/X subframes. Other aspects entail transmitting a dedicated or unicast message indicating the time-domain RPI, where a UE may be operating in connected mode. With the RPI, the UE may be able to determine channel state information (CSI), make radio resource management (RRM) measurements, or perform radio link monitoring (RLM), based on one or more signals from a serving base station during the protected time-domain resources.
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485.发明授权公开(公告)号：US09787443B2
公开(公告)日：2017-10-10
申请号：US14723765
申请日：2015-05-28
Applicant: QUALCOMM Incorporated
Inventor： Aleksandar Damnjanovic , Durga Prasad Malladi , Wanshi Chen , Yongbin Wei , Madhavan Srinivasan Vajapeyam , Tao Luo , Peter Gaal , Hao Xu
CPC classification number: H04L5/0007 , H04J11/00 , H04J2011/0096 , H04L5/14 , H04W56/001 , H04W72/042 , H04W72/0446 , H04W74/08
Abstract: Techniques are described for wireless communication. A first method may include performing a clear channel assessment (CCA) on an unlicensed radio frequency spectrum band; transmitting an indication of a time division duplexing (TDD) configuration over the unlicensed radio frequency spectrum band when the CCA is successful; and transmitting downlink data over the unlicensed radio frequency spectrum band in accordance with the TDD configuration when the CCA is successful. A second method may include performing a CCA on an unlicensed radio frequency spectrum band; dynamically determining, based at least in part on at least one grant to a user equipment (UE), and for a period following the CCA, a number of uplink subframes for communication over the unlicensed radio frequency spectrum band; and transmitting downlink data over the unlicensed radio frequency spectrum band in accordance with the timing of the number of uplink subframes when the CCA is successful.
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Patent Agency Ranking
公开(公告)号：US20170288819A1
公开(公告)日：2017-10-05
申请号：US15444875
申请日：2017-02-28
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Peter Gaal , Shimman Arvind Patel , Yongbin Wei , Aleksandar Damnjanovic
CPC classification number: H04L1/1812 , H04L1/1854 , H04L1/1887 , H04L5/0044 , H04L5/0055 , H04W72/0413 , H04W72/0446 , H04W72/0466 , H04W72/1273 , H04W72/1284 , H04W74/02
Abstract: Systems, methods, and apparatuses are described for wireless communication, including for hybrid automatic repeat request (HARQ) feedback in a system that supports communications using transmission time intervals (TTIs) of different durations. A base station may identify a user equipment's (UE) capability to provide HARQ feedback for transmissions that use TTIs of a shorter duration relative to other TTIs supported in the system. The base station may select a HARQ timing mode based on the capability of the UE and may indicate the selected HARQ timing mode to the UE. The base station may then transmit one or more data transmissions to the UE using the reduced TTIs. The UE may respond with HARQ feedback based on the HARQ timing mode. The HARQ timing mode may be based on different response times based on the location of the data transmission within a TTI or relative to data transmission in other TTIs.
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487.发明申请公开(公告)号：US20170223670A1
公开(公告)日：2017-08-03
申请号：US15356966
申请日：2016-11-21
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Shimman Arvind Patel , Yongbin Wei , Aleksandar Damnjanovic , Hao Xu
CPC classification number: H04L5/0048 , H04L5/0053 , H04W24/08 , H04W72/00 , H04W88/02
Abstract: Control information may be transmitted for different TTI lengths. Different control information for the different TTIs may be transmitted using control channel resources that are established for communication of control information, such as a physical downlink control channel (PDCCH), for example. Control information for a first TTI may be located in a first set of resources, and control information for a second TTI may be located in a second set of resources. The first set of resources may be located within a first search space that may be searched by a user equipment (UE) to identify the first control information. The second set of resources may be located within a second search space that may be searched by the UE to identify the second control information.
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公开(公告)号：US09723558B2
公开(公告)日：2017-08-01
申请号：US13802637
申请日：2013-03-13
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 transitions to a dormant state and transmits a very low duty cycle signal (LDCS) while in the dormant state. The apparatus may transmit an LDCS configuration to a second entity, the second entity being one of an LPN that is not in a dormant state and a macro cell. The apparatus may further monitor for a RACH messages at a predetermined RACH delay after transmitting the LDCS. The apparatus may transition to a DRX/DTX mode. The DRX/DTX mode may be matched to at least one connected UE.
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公开(公告)号：US20170215200A1
公开(公告)日：2017-07-27
申请号：US15154344
申请日：2016-05-13
Applicant: QUALCOMM Incorporated
Inventor： Siddhartha Mallik , Aleksandar Damnjanovic , Jing Sun , Taesang Yoo , Xiaoxia Zhang , Durga Prasad Malladi
CPC classification number: H04W72/1268 , H04B7/0626 , H04L5/0048 , H04W52/00 , H04W72/0446 , H04W72/0493 , H04W72/082 , H04W72/1273 , H04W74/0808
Abstract: Methods, systems, and devices for wireless communication are described. A base station may identify a transmission opportunity duration and an allocation for downlink and uplink transmissions, then broadcast a channel reservation request transmission. The broadcast may be sent using unlicensed radio frequency spectrum over a channel that includes multiple-sub-bands. The channel reservation transmission may include the identified duration, allocation, and a channel state information (CSI) request. User equipments (UEs) may receive the broadcast, and respond with a channel reservation response transmission that includes a CSI report, a transmit identity, or an interference threshold indicator. In some cases, some or all of the UEs may transmit a sounding reference signal (SRS) in response to an SRS request that is broadcast by the base station. The base station may schedule uplink and/or downlink transmissions to at least a subset of the multiple UEs based on the channel reservation response and/or SRS.
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公开(公告)号：US09655045B2
公开(公告)日：2017-05-16
申请号：US13802637
申请日：2013-03-13
Applicant: QUALCOMM Incorporated
Inventor： Hao Xu , Durga Prasad Malladi , Yongbin Wei , Peter Gaal , Wanshi Chen , Aleksandar Damnjanovic , Tao Luo
Abstract: A method, an apparatus, and a computer program product for wireless communication are provided. The apparatus transitions to a dormant state and transmits a very low duty cycle signal (LDCS) while in the dormant state. The apparatus may transmit an LDCS configuration to a second entity, the second entity being one of an LPN that is not in a dormant state and a macro cell. The apparatus may further monitor for a RACH messages at a predetermined RACH delay after transmitting the LDCS. The apparatus may transition to a DRX/DTX mode. The DRX/DTX mode may be matched to at least one connected UE.
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