公开(公告)号：US20150029999A1

公开(公告)日：2015-01-29

申请号：US14333236

申请日：2014-07-16

Applicant: QUALCOMM Incorporated

Inventor： Gavin Bernard Horn ,  Andrei Dragos Radulescu ,  Ozcan Ozturk

IPC: H04W36/22

CPC classification number: H04W36/22 ,  H04L45/306 ,  H04W36/08 ,  H04W36/12 ,  H04W76/12 ,  H04W76/32 ,  H04W92/045 ,  H04W92/20

Abstract: Techniques are described for selected internet protocol traffic offload (SIPTO) support at an assisting eNodeB. A connection may be established between a first eNodeB and a UE, and it may be determined whether a connection exists or is pending between the UE and a second eNodeB. A message may be transmitted to a mobility management entity (MME), the message associating a network address of the second eNodeB with SIPTO connectivity for the UE.

Abstract translation: 描述了在辅助eNodeB处选择的因特网协议流量卸载（SIPTO）支持的技术。 可以在第一eNodeB和UE之间建立连接，并且可以确定UE和第二eNodeB之间是否存在连接或正在等待。 消息可以被发送到移动性管理实体（MME），所述消息将第二eNodeB的网络地址与UE的SIPTO连接相关联。

公开(公告)号：US11722910B2

公开(公告)日：2023-08-08

申请号：US17302263

申请日：2021-04-28

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxia Zhang ,  Zhifei Fan ,  Jing Sun ,  Andrei Dragos Radulescu ,  Srinivas Yerramalli ,  Tamer Kadous

IPC: H04W16/26 ,  H04W74/08

CPC classification number: H04W16/26 ,  H04W74/0833

Abstract: Wireless communications systems and methods related to on-demand cell coverage extension for broadcast signals are provided. A first wireless communication device communicates, with a second wireless communication device, a first extended cell coverage request. The first wireless communication device communicates, with the second wireless communication device, a first broadcast communication signal in an extended cell coverage mode in response to the first extended cell coverage request. The first broadcast communication signal includes a system information block repeated in at least one of a time domain or a frequency domain.

公开(公告)号：US11696284B2

公开(公告)日：2023-07-04

申请号：US16563730

申请日：2019-09-06

Applicant: QUALCOMM Incorporated

Inventor： Chih-Hao Liu ,  Seyed Ali Akbar Fakoorian ,  Srinivas Yerramalli ,  Qingjiang Tian ,  Andrei Dragos Radulescu ,  Tamer Kadous

IPC: H04W72/00 ,  H04W72/20 ,  H04L5/00 ,  H04W24/10 ,  H04W28/02 ,  H04W72/541 ,  H04W72/542

CPC classification number: H04W72/20 ,  H04L5/0048 ,  H04L5/0055 ,  H04W24/10 ,  H04W28/0236 ,  H04W72/541 ,  H04W72/542

Abstract: Generally, the described techniques provide for a base station transmitting an indication of a set of one or more available channels to a user equipment (UE). The base station may transmit to the UE a first downlink burst using a first channel and a first frame period. In some cases, the base station may detect interference associated with the first downlink burst, for example, by performing a listen-before-talk (LBT) procedure or through an interference management resources (IMR) procedure in which the base station transmits reference signal signals to the UE that the UE may use to return a report on measured interference. If the base station detects interference, the base station may transmit to the UE an instruction to switch to a second channel and a second frame period, where the second channel may be selected from the set of one or more available channels.

公开(公告)号：US11689950B2

公开(公告)日：2023-06-27

申请号：US17024607

申请日：2020-09-17

Applicant: QUALCOMM Incorporated

Inventor： Andrei Dragos Radulescu ,  Jing Sun ,  Kapil Bhattad ,  Xiaoxia Zhang

IPC: H04W24/10 ,  H04L5/00 ,  H04W56/00 ,  H04L1/00 ,  H04W72/23

CPC classification number: H04W24/10 ,  H04L1/0013 ,  H04L5/0048 ,  H04W56/001 ,  H04W72/23

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) and base station may communicate in on a wireless channel of an unlicensed radio frequency spectrum band. The base station may transmit synchronization signal blocks (SSBs) in a discovery reference signal (DRS) slot. The base station may multiplex a channel state information (CSI) reference signal (CSI-RS). The base station may multiplex an aperiodic CSI-RS or a periodic CSI-RS with the SSBs in the DRS slot. For an aperiodic CSI-RS, the base station may separately trigger the CSI-RS measurement and CSI-RS reporting. For periodic CSI-RS, the base station may transmit an indication of whether the periodic CSI-RS is present.

公开(公告)号：US11197166B2

公开(公告)日：2021-12-07

申请号：US16871867

申请日：2020-05-11

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Andrei Dragos Radulescu ,  Yongbin Wei

IPC: H04W72/04 ,  H04W16/14 ,  H04W56/00 ,  H04W74/08 ,  H04W84/18

Abstract: Synchronous communications mode detection is disclosed for unlicensed spectrum communications. To detect synchronous mode communications, an observing node monitors on-off transitions of communication transmissions on a shared communication spectrum. The observing node detects the on-off transition spacing of the on-off transitions over a sliding window of a detection period duration. The node may determine the number of candidate synchronous on-off transition spacings of the detected on-off transition spacings that are equal to an integer multiple of a synchronization period. If the number of candidate synchronous on-off transition spacings exceeds a threshold value the observing node will declare detection of a synchronous operation mode of the shared communication spectrum.

公开(公告)号：US11190234B2

公开(公告)日：2021-11-30

申请号：US16385943

申请日：2019-04-16

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Srinivas Yerramalli ,  Xiaoxia Zhang ,  Tamer Kadous ,  Yongbin Wei ,  Jing Sun ,  Andrei Dragos Radulescu

IPC: H04B1/7136 ,  H04B1/7143 ,  H04B1/7156 ,  H04L27/26

Abstract: Techniques providing opportunistic frequency switching for frame based equipment (FBE), such as may be configured to minimize opportunistic frequency switching delay in FBE new radio (NR) unlicensed (NR-U) networks and/or to provide frequency diversity FBE access based on offset sequences of medium sensing occasions for the carrier frequencies are disclosed. Within the FBE mode network, a base station may configure a pattern of sensing locations in each frame for each frequency transmission unit of the plurality of frequency transmission units, wherein an inter-unit delay of sensing locations between a first frequency transmission unit and a next adjacent frequency transmission unit and between a last frequency transmission unit and the first frequency transmission unit is a fixed duration. Opportunistic frequency switching of embodiments may utilize the medium sensing locations for opportunistically switching between a sequence of the frequency transmission units for implementing frequency diversity FBE access.

公开(公告)号：US20210119748A1

公开(公告)日：2021-04-22

申请号：US17071635

申请日：2020-10-15

Applicant: QUALCOMM Incorporated

Inventor： Aleksandar Damnjanovic ,  Andrei Dragos Radulescu ,  Seyed Ali Akbar Fakoorian

IPC: H04L5/00 ,  H04W72/08 ,  H04W24/10

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station serving the UE in a first network, a power control configuration and a reference signal measurement configuration. The UE may receive, based at least in part on the reference signal measurement configuration, a reference signal from at least one wireless device of a second network. The UE may determine, based at least in part on the power control configuration and the received reference signal, an interference level for the second network introduced by the first network. The UE may adjust a transmission power limit for the UE based at least in part on the determined interference level and the power control configuration. The UE may transmit signals to the base station according to the adjusted transmission power limit.

公开(公告)号：US10952142B2

公开(公告)日：2021-03-16

申请号：US15633376

申请日：2017-06-26

Applicant: QUALCOMM Incorporated

Inventor： Andrei Dragos Radulescu ,  Alexei Yurievitch Gorokhov ,  Chengjin Zhang ,  Chirag Sureshbhai Patel ,  Tamer Kadous

IPC: H04L12/00 ,  H04W52/02 ,  H04W76/28 ,  H04W68/02 ,  H04W24/02 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) and a base station operating in unlicensed spectrum may temporarily increase a paging opportunity window (POW) size, or reduce a time between POWs, in order to meet performance metrics or account for time periods when a base station is unable to win access to the wireless medium during a POW. In some cases, a UE may identify a failed listen-before-talk procedure and autonomously update the POW size. In other examples, a base station may initiate a change in POW size or increase a number of paging opportunities in order to meet achieve one or more key performance indicators (KPIs). After a predetermined period, or after a triggering condition is no longer present, the UE and the base station may reset the POW size or the number of paging opportunities to a nominal amount to conserve power.

公开(公告)号：US10687219B2

公开(公告)日：2020-06-16

申请号：US16024289

申请日：2018-06-29

Applicant: QUALCOMM Incorporated

Inventor： Srinivas Yerramalli ,  Andrei Dragos Radulescu ,  Tao Luo ,  Tamer Kadous ,  Aleksandar Damnjanovic

IPC: H04W16/14 ,  H04W72/04 ,  H04W74/08 ,  H04W76/27 ,  H04W72/08 ,  H04L5/00 ,  H04W24/10 ,  H04W74/00

Abstract: Methods, systems, and devices for wireless communication are described. The described techniques provide for transmission of uplink data from a user equipment (UE) in the absence of scheduled uplink resources for the uplink data transmission that are allocated to the UE prior to the transmission of the uplink data. Various examples provide frame structures that may be used for unscheduled uplink transmissions of a UE. Unscheduled uplink transmissions may be transmitted in a shared or unlicensed radio frequency spectrum, and access to the shared or unlicensed radio frequency spectrum may be determined based on a priority of an operator associated with a UE for accessing the spectrum. Beamforming techniques may be used for uplink and downlink transmissions and beam widths for beamformed transmissions may be selected based on the information transmitted in a transmission, an operator priority for use of shared radio frequency spectrum, or any combination thereof.

公开(公告)号：US10541851B2

公开(公告)日：2020-01-21

申请号：US15975207

申请日：2018-05-09

Applicant: QUALCOMM Incorporated

Inventor： Rahul Malik ,  Aleksandar Damnjanovic ,  Andrei Dragos Radulescu ,  Srinivas Yerramalli ,  Tamer Kadous ,  Yongbin Wei

IPC: H04L27/26 ,  H04J11/00 ,  H04L5/00 ,  H04W76/10

Abstract: Methods, systems, and devices for wireless communication are described. A base station may perform an access procedure to obtain access to a shared radio frequency spectrum band during a measurement window and generate a synchronization signal (SS) burst comprising a plurality of SS blocks. The base station may perform a beam sweeping first transmission of the SS burst over the shared radio frequency spectrum based at least in part on the access procedure. In the first transmission or a second transmission, the base station may transmit at least one of a first indication of a time of access to the shared radio frequency spectrum band with respect to the measurement window, a second indication of a transmission beam associated with the SS block, and a third indication of a quantity of remaining SS blocks from the plurality of SS blocks to follow the SS block in the measurement window.