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公开(公告)号：US20200267770A1
公开(公告)日：2020-08-20
申请号：US16634563
申请日：2018-07-10
申请人： Muhammad Nazmul ISLAM , Tao LUO , Sumeeth NAGARAJA , Peng CHENG , Sundar SUBRAMANIAN , Keiichi KUBOTA , Qualcomm Incorporated
发明人： Muhammad Nazmul ISLAM , Tao LUO , Sumeeth NAGARAJA , Peng CHENG , Sundar SUBRAMANIAN , Keiichi KUBOTA
摘要： Methods, systems, and devices for wireless communication are described. In some wireless systems, a user equipment (UE) may access a network or cell using a random access (RACH) procedure. A base station may allocate dedicated RACH resources and common RACH resources for the UE to transmit a RACH preamble message on and may convey a configuration for the UE. In some cases, the UE may perform multiple transmissions of the RACH preamble message in the dedicated RACH resources, and based on the configuration may determine whether to perform a single or multiple transmissions of the RACH preamble message in the common RACH resources. The UE may transmit the messages using the same or different uplink transmit beams, and the base station may receive the messages using the same or different uplink reception beams. These multiple transmissions may reduce latency and improve reliability of the RACH procedure.
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公开(公告)号：US20200015292A1
公开(公告)日：2020-01-09
申请号：US16572487
申请日：2019-09-16
摘要： Aspects of the present disclosure provide various techniques for requesting a system information block (SIB) and providing a SIB response for a user equipment (UE) in a UE-centric wireless communication network. In some aspects of the disclosure, the network may transmit the SIB to the UEs in a broadcast mode or in an on-demand mode.
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公开(公告)号：US20190268841A1
公开(公告)日：2019-08-29
申请号：US16406628
申请日：2019-05-08
摘要： A UE may be operating in a wireless communication network having a UE-centric medium access control layer, and the UE may detect presence of a trigger event to signal a base station of the wireless communication network. The UE may identify one of a plurality of functionalities corresponding to the trigger event, and may generate a chirp signal that includes chirp purpose indicator and a chirp message, wherein the chirp purpose indicator and a format of the chirp message correspond to the identified one of the plurality of functionalities. Accordingly, the UE may transmit the chirp signal having the chirp purpose indicator to the base station, which may provide a chirp response message that includes message contents that relate to the chirp purpose indicator.
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公开(公告)号：US20180092083A1
公开(公告)日：2018-03-29
申请号：US15661228
申请日：2017-07-27
发明人： Ravi AGARWAL , Gavin Bernard HORN , Keiichi KUBOTA , Haitong SUN , Tingfang JI , Kambiz AZARIAN YAZDI
IPC分类号： H04W72/04
CPC分类号： H04W72/048 , H04L5/0055 , H04W60/04 , H04W68/02 , H04W72/0413
摘要： Certain aspects of the present disclosure provide triggers for user equipment (UE) transmissions to support uplink based mobility in a wireless communication system. According to certain aspects, a method of wireless communication by a user equipment (UE) is provided. The method generally includes receiving a configuration indicating one or more triggers for transmitting on an uplink access channel, wherein the one or more triggers comprise a first indication of mobility of the UE, determining, based at least in part on detection of one of the one or more triggers, to transmit on the uplink access channel, transmitting a signal on the uplink access channel, and receiving, in response to the transmission of the signal on the uplink access channel, a second indication of at least one of: confirmation of reception of the signal or a paging notification.
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公开(公告)号：US20180049213A1
公开(公告)日：2018-02-15
申请号：US15673579
申请日：2017-08-10
发明人： Aziz GHOLMIEH , Gavin Bernard HORN , Keiichi KUBOTA , Masato KITAZOE , Srinivasan BALASUBRAMANIAN
CPC分类号： H04W72/1215 , H03D7/16 , H04L41/0226 , H04L41/082 , H04W8/24 , H04W16/10 , H04W28/0263 , H04W72/0486 , H04W88/023
摘要： Certain aspects of the present disclosure relate to methods and apparatus for coordinating UE capabilities across RATs. In some cases, a UE may provide an indication of one or more first sets of capabilities of the UE to operate in a first RAT network that are compatible with one or more second sets of capabilities of the UE to operate in a second RAT network. Indicating the sets of capabilities may require less signaling overhead than explicitly signaling all possible combinations of capabililites.
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公开(公告)号：US20170311285A1
公开(公告)日：2017-10-26
申请号：US15289573
申请日：2016-10-10
发明人： Hung LY , Keiichi KUBOTA , Tingfang JI , Joseph Binamira SORIAGA
CPC分类号： H04W72/005 , H04B2001/6912 , H04W48/12 , H04W48/14 , H04W74/0833
摘要： Aspects described herein include receiving, at a base station operating in a wireless communication network, at least one chirp signal including at least one system information block request bitmap that identifies one or more of a plurality of system information blocks corresponding to each of one or more system information requests, identifying the one or more system information requests, generating a message in response to the one or more system information requests, encoding at least the portion of the message based at least in part the at least one system information block request bitmap to define an encoded message; and transmitting, over a broadcast channel, the encoded message in response to the chirp signal. A user equipment may include aspects for transmitting the chirp signal and receiving the encoded message.
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公开(公告)号：US20210044408A1
公开(公告)日：2021-02-11
申请号：US16964100
申请日：2019-01-15
发明人： Keiichi KUBOTA , Peng CHENG , Masato KITAZOE , Peter Pui Lok ANG , Tao LUO , Heechoon LEE , Hung Dinh LY , Prashanth Haridas HANDE
摘要： Certain aspects of the present disclosure relate to communication systems, and more particularly, to system information acquisition over bandwidth parts (BWPs) in communications system operating according to new radio (NR) technologies. In an exemplary method, a user equipment (UE) receives system information (SI) via a transmission in a downlink (DL) bandwidth part (BWP) of a system bandwidth and transmits, to a serving base station (BS) and in response to receiving the SI, an indication that the UE has completed SI acquisition.
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公开(公告)号：US20200344657A1
公开(公告)日：2020-10-29
申请号：US16900142
申请日：2020-06-12
发明人： Karthika PALADUGU , Gavin Bernard HORN , Prashanth Haridas HANDE , Keiichi KUBOTA , Prasad Reddy KADIRI , Alberto RICO ALVARINO , Masato KITAZOE , Umesh PHUYAL , Supratik BHATTACHARJEE
摘要： Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment concurrently communicates with a source base station (BS) and a target BS on a connection with the source BS and a connection with the target BS as part of a make-before-break (MBB) handover procedure; and performs a common packet data convergence protocol (PDCP) function for the connection with the source BS and the connection with the target BS before the connection with the source BS is released as part of the MBB handover procedure. Numerous other aspects are provided.
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公开(公告)号：US20200344030A1
公开(公告)日：2020-10-29
申请号：US16757978
申请日：2018-11-16
发明人： Peng CHENG , Keiichi KUBOTA , Peter Pui Lok ANG , Linhai HE
摘要： Techniques and apparatus for a control plane design for bandwidth part (BWP) in new radio (NR) are provided. One technique includes sending information with an indication of a BWP capability of a user equipment (UE) to a base station (BS). A configuration from the BS indicating a set of BWPs available to use for communication is received in response to the indication. Communications are performed on at least one of the set of BWPs. Another technique includes receiving information having an indication of a BWP capability of the UE. A configuration indicating a set of BWPs available for the UE to use for communication is determined. The configuration is sent to the UE.
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公开(公告)号：US20200084674A1
公开(公告)日：2020-03-12
申请号：US16681219
申请日：2019-11-12
发明人： Keiichi KUBOTA , Tingfang JI , Tao LUO , Gavin Bernard HORN , John Edward SMEE , Ravi AGARWAL , Joseph Binamira SORIAGA , Saurabha Rangrao TAVILDAR
摘要： Aspects of the present disclosure provide methods and apparatus for beam selection in uplink-based and downlink-based mobility scenarios, for example, for new radio (NR) systems which can improve handover reliability, reduce handover frequency, and improve power efficiency. Certain aspects provide a method for wireless communications by a user equipment (UE). The method generally includes transmitting an uplink reference signal with an indication of a preferred downlink beam and receiving a downlink transmission based, at least in part, on the uplink reference signal.
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