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公开(公告)号：US09794012B2
公开(公告)日：2017-10-17
申请号：US13958019
申请日：2013-08-02
Applicant: QUALCOMM Incorporated
Inventor： Durga Prasad Malladi , Byoung-Hoon Kim , Juan Montojo , Sandip Sarkar
CPC classification number: H04J11/00 , H04B7/0417 , H04L1/0026 , H04L1/0028 , H04L1/0057 , H04L1/0072 , H04L1/1607 , H04L1/1671 , H04L1/1812 , H04L1/1822 , H04L5/0007 , H04L5/0053 , H04L5/0064 , H04L5/0091
Abstract: Techniques for sending control information in a wireless communication system are described. In an aspect, a UE spreads control information across frequency with a DFT and across time with an orthogonal sequence to obtain output data for the control information. In one design, the UE receives codewords for N HARQ processes in N downlink subframes, determines an ACK value for each HARQ process, codes N ACK values for the N HARQ processes to obtain ACK information, generates output data for the ACK information, and sends the output data in one of M uplink subframes. In another aspect, first control information is processed based on a first coding and multiplexing scheme utilizing code division multiplexing in time and frequency domains. Second control information is processed based on a second coding and multiplexing scheme utilizing code division multiplexing in time domain and spreading in frequency domain.
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公开(公告)号：US09780847B2
公开(公告)日：2017-10-03
申请号：US15067932
申请日：2016-03-11
Applicant: QUALCOMM Incorporated
Inventor： Petru Cristian Budianu , Jing Sun , Siddhartha Mallik , Yongbin Wei , Durga Prasad Malladi
IPC: H04B1/38 , H04L7/00 , H04B7/0417 , H04L5/00 , H04B7/0452 , H04L1/00 , H04B7/0456 , H04B7/06
CPC classification number: H04B7/0417 , H04B7/0452 , H04B7/0456 , H04B7/0626 , H04L1/0025 , H04L1/0026 , H04L1/0028 , H04L1/0029 , H04L5/0057
Abstract: Channel feedback reporting for non-orthogonal wireless communication systems employing frequency selective channels. A plurality of channel feedback matrices corresponding to a plurality of sub-carriers of a sub-band for a non-orthogonal channel may be determined by a UE, and one or more effective channel feedback matrices for the sub-band may be determined based on the plurality of channel feedback matrices. Each of the one or more effective channel feedback matrices may be associated with corresponding sets of transmission strategies, where each of the corresponding sets of transmission strategies include one or more transmission strategies of a plurality of transmission strategies for the non-orthogonal channel. Channel feedback information representing the one or more effective channel feedback matrices may be reported to a base station, which may estimate channel quality for the plurality of transmission strategies based at least in part on the channel feedback information, for downlink transmissions to UEs over the non-orthogonal channel.
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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：US09735946B2
公开(公告)日：2017-08-15
申请号：US14518172
申请日：2014-10-20
Applicant: QUALCOMM Incorporated
Inventor： Tingfang Ji , Wanshi Chen , Durga Prasad Malladi , Peter Gaal
CPC classification number: H04L5/0073 , H04L5/0007 , H04L5/0016 , H04L5/003 , H04L5/0058 , H04W48/08 , H04W52/244 , H04W72/0413 , H04W72/042 , H04W72/0446
Abstract: According to certain aspects, resources allocated to a user equipment (UE) for physical uplink control channel (PUCCH) transmissions may be determined in a subframe-type dependent manner. As a result, PUCCH regions for different subframes may vary based on the subframe types.
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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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Patent Agency Ranking
公开(公告)号：US20170150430A1
公开(公告)日：2017-05-25
申请号：US15426160
申请日：2017-02-07
Applicant: QUALCOMM Incorporated
Inventor： Tao Luo , Yongbin Wei , Peter Gaal , Durga Prasad Malladi
CPC classification number: H04W48/16 , H04L5/0048 , H04L25/0238 , H04L27/2601 , H04L27/2662 , H04W16/14 , H04W24/10 , H04W52/0274 , H04W56/0015 , H04W72/042 , H04W72/0453 , Y02D70/1242 , Y02D70/1262 , Y02D70/1264 , Y02D70/142 , Y02D70/146
Abstract: Techniques are described for wireless communication. A first method includes receiving a first orthogonal frequency division multiplexing (OFDM) symbol including a plurality of reference signals (RSs) over a radio frequency spectrum band. The first method may also include receiving a second OFDM symbol including a first synchronization signal over the radio frequency spectrum band. A second method includes transmitting a first OFDM symbol including a plurality of RSs over an radio frequency spectrum band. The second method may also include transmitting a second OFDM symbol including a first synchronization signal over the radio frequency spectrum band. In each method, a first portion of the first OFDM symbol includes a higher density of the RSs than a remaining portion of the first OFDM symbol, and when included, the second OFDM symbol may be adjacent in time to the first OFDM symbol.
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公开(公告)号：US09648625B2
公开(公告)日：2017-05-09
申请号：US14594550
申请日：2015-01-12
Applicant: QUALCOMM Incorporated
Inventor： Wanshi Chen , Xiaoxia Zhang , Durga Prasad Malladi , Xiliang Luo
CPC classification number: H04W72/0486 , H04L5/0007 , H04L5/0037 , H04L5/0092 , H04W52/248 , H04W52/34
Abstract: A system and method for facilitating resource management in OFDM systems is provided. The system permits different and flexible resource cell metric operations levels (e.g. uplink load management, admission control, congestion control, signal handoff control) for different sub-bands. For the uplink load management, there are multiple distinct load operation points (e.g. IoT, RoT) per sub-band group instead of the same operation level across the entire available band. The sub-band groups encompass the entire band. The facilitation system also comprises a variety of transmitting protocols, command increment variable stepsize methods and robust command response methods. The system thus provides more flexible reverse link resource management and more efficient utilization of the bandwidth.
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公开(公告)号：US09629166B2
公开(公告)日：2017-04-18
申请号：US13890129
申请日：2013-05-08
Applicant: QUALCOMM Incorporated
Inventor： Yongbin Wei , Hao Xu , Durga Prasad Malladi , Tingfang Ji , Wanshi Chen , Tao Luo , Peter Gaal , Jelena M. Damnjanovic , Aleksandar Damnjanovic , Naga Bhushan
CPC classification number: H04W72/048 , H04L5/00 , H04L5/001 , H04L5/0048 , H04L5/0053 , H04L5/0091 , H04W48/16 , H04W72/0453 , H04W76/16
Abstract: A method of wireless communication occurs in a frequency band having a first set of resources associated with a first carrier type and a second set of resources associated with a second carrier type. In one configuration, the first carrier type is a new carrier type and the second carrier type is a legacy carrier type. Legacy UEs may only receive signals from the second carrier type. However, new UEs may receive signals from both the first carrier type and the second carrier type. Therefore, to provide backward compatibility while supporting new UEs, an eNodeB may signal support of the first carrier type to a new UE while maintaining signaling with legacy UEs. Additionally, the eNodeB may restrict operations of a UE to the first set of resources or second set of resources.
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公开(公告)号：US09608778B2
公开(公告)日：2017-03-28
申请号：US14573577
申请日：2014-12-17
Applicant: QUALCOMM Incorporated
Inventor： Durga Prasad Malladi , Yongbin Wei
CPC classification number: H04W72/0446 , H04J11/00 , H04J2011/0009 , H04J2011/0013 , H04L1/18 , H04L5/0007 , H04L5/001 , H04L5/0037 , H04L5/0044 , H04L5/0055 , H04L5/0076 , H04L5/14 , H04L27/2602 , H04L27/2605 , H04L43/0864 , H04W16/32 , H04W72/0453 , H04W74/08
Abstract: Methods, systems, and devices are described for hierarchical communications within a wireless communications system. An eNB and/or a UE may be configured to operate within the wireless communications system which is at least partially defined through a first layer with first layer transmissions having a first subframe type and a second layer with second layer transmissions having a second subframe type. The first subframe type may have a first round trip time (RTT) between transmission and acknowledgment of receipt of the transmission, and the second layer may have a second RTT that is less than the first RTT. Subframes of the first subframe type may be multiplexed with subframes of the second subframe type, such as through time division multiplexing.
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60.发明申请CONCURRENT WIRELESS COMMUNICATIONS OVER LICENSED AND UNLICENSED SPECTRUM 审中-公开通过许可和不经授权的频谱进行的当前无线通信公开(公告)号：US20160381567A1
公开(公告)日：2016-12-29
申请号：US15257457
申请日：2016-09-06
Applicant: QUALCOMM Incorporated
Inventor： Naga Bhushan , Durga Prasad Malladi , Yongbin Wei , Peter Gaal , Tao Luo , Tingfang Ji , Gavin Bernard Horn , Wanshi Chen , Alexsandar Damnjanovic
Abstract: Methods and apparatuses are described for wireless communications. A first method includes transmitting a first Orthogonal Frequency-Division Multiple Access (OFDMA) communications signal to a wireless node in a licensed spectrum, and transmitting, concurrently with the transmission of the first OFDMA communications signal, a second OFDMA communications signal to the wireless node in an unlicensed spectrum. A second method includes receiving a first Orthogonal Frequency-Division Multiple Access (OFDMA) communications signal from a wireless node in a licensed spectrum, and receiving, concurrently with the reception of the first OFDMA communications signal, a second OFDMA communication signal from the wireless node in an unlicensed spectrum. A third method includes generating a periodic gating interval for a cellular downlink in an unlicensed spectrum, and synchronizing at least one boundary of the periodic gating interval with at least one boundary of a periodic frame structure associated with a primary component carrier of the cellular downlink.
Abstract translation: 描述了用于无线通信的方法和装置。 第一种方法包括向许可频谱中的无线节点发送第一正交频分多址（OFDMA）通信信号，以及与第一OFDMA通信信号的传输同时向无线节点发送第二OFDMA通信信号 在无牌频谱中。 第二种方法包括从许可频谱中的无线节点接收第一正交频分多址（OFDMA）通信信号，并且与第一OFDMA通信信号的接收同时接收来自无线节点的第二OFDMA通信信号 在无牌频谱中。 第三种方法包括为非许可频谱中的蜂窝下行链路产生周期性门控间隔，并且将周期性选通间隔的至少一个边界与与蜂窝下行链路的主要分量载波相关联的周期性帧结构的至少一个边界同步。
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