公开(公告)号：US10420054B2

公开(公告)日：2019-09-17

申请号：US14636361

申请日：2015-03-03

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Durga Prasad Malladi ,  Naga Bhushan ,  Tingfang Ji ,  Peter Gaal ,  Wanshi Chen ,  Tao Luo ,  Yongbin Wei ,  Aleksandar Damnjanovic

IPC: H04W72/04 ,  H04W56/00 ,  H04J3/14 ,  H04J1/16 ,  H04J3/16 ,  H01Q5/25 ,  H04L5/00 ,  H04L5/06 ,  H04L1/00 ,  H04L5/14

Abstract: Methods, systems, and devices are described for low latency communications within a wireless communications system. An eNB and/or a UE may be configured to operate within the wireless communications system and may send triggers to initiate communications using a dedicated resource in a wireless communications network that supports transmissions having a first subframe type and a second subframe type, the first subframe type comprising symbols of a first duration and the second subframe type comprising symbols of a second duration that is shorter than the first duration. Communications may be initiated by transmitting a trigger from the UE or eNB using the dedicated resource, and initiating communications following the trigger. The duration of time between the trigger and initiating communications can be significantly shorter than the time to initiate communications using legacy LTE communications.

公开(公告)号：US10412690B2

公开(公告)日：2019-09-10

申请号：US15199619

申请日：2016-06-30

Applicant: QUALCOMM Incorporated

Inventor： Madhavan Srinivasan Vajapeyam ,  Wanshi Chen ,  Hao Xu

IPC: H04W52/36 ,  H04W72/04 ,  H04L29/12 ,  H04W74/08 ,  H04W24/08 ,  H04W52/24 ,  H04W4/70 ,  H04W52/14

Abstract: Enhanced power headroom reporting (ePHR) for MTC devices. The ePHR techniques may include configuration and triggering of reporting when a corresponding change to a coverage enhancement (CE) level is likely to result. For example, ePHR may be based on parameters more directly related to PH change instead of PL changes. MTC devices may be configured with multiple thresholds for ePHR reporting that define ePHR regions associated with CE levels. In some examples, an ePHR triggered at the MAC level is used to trigger sending a request for uplink data resources. Legacy PH reporting may be disabled when ePHR is configured to reduce overhead.

公开(公告)号：US10411856B2

公开(公告)日：2019-09-10

申请号：US14866313

申请日：2015-09-25

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Tao Luo ,  Hao Xu ,  Yongbin Wei ,  Durga Prasad Malladi

IPC: H04L5/00 ,  H04W72/04 ,  H04W72/08 ,  H04L27/26 ,  H04W76/27 ,  H04B17/318 ,  H04W52/32

Abstract: Techniques are provided for reference signal transmissions and transmit power ratio determination in non-orthogonal transmissions. A traffic-to-pilot power ratio (TPR) may be determined for a base layer for a non-orthogonal channel and another TPR may be determined for an enhancement layer for the non-orthogonal channel. Reference signal transmissions may be transmitted by a base station at a reference signal transmission power, and a user equipment (UE) may estimate channel quality for the base layer or the enhancement layer based at least in part on an energy level of the received reference signal and one or more of the first TPR or the second TPR. A base station may transmit TPR signaling that may indicate one or more TPR values for one or both of the base layer or enhancement layer.

公开(公告)号：US10397864B2

公开(公告)日：2019-08-27

申请号：US15472506

申请日：2017-03-29

Applicant: QUALCOMM Incorporated

Inventor： Sharad Sambhwani ,  Hao Xu ,  Durga Prasad Malladi

IPC: H04W52/02 ,  H04L5/00 ,  H04W4/70

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus operates in a first power mode with a first DL bandwidth in association with one of a radio resource control (RRC) idle state or an RRC connected state with a base station. The apparatus transitions to a second power mode with a second DL bandwidth less than the first DL bandwidth. Additionally, the apparatus monitors a set of symbols and a set of subcarriers of the second DL bandwidth for an activity indicator from the base station. The apparatus transitions from the second power mode to the first power mode upon receiving the activity indicator from the base station. In an aspect, control information associated with a modulation scheme may be within the set of symbols and the set of subcarriers. The control information may correspond to a particular constellation point.

公开(公告)号：US10396962B2

公开(公告)日：2019-08-27

申请号：US15703867

申请日：2017-09-13

Applicant: QUALCOMM Incorporated

Inventor： Chong Li ,  Junyi Li ,  Hao Xu ,  Jing Jiang

IPC: H04W72/04 ,  H04L5/00 ,  H04B7/06 ,  H04L1/18

Abstract: An apparatus may configure x subframes with a subslot configuration that includes y subslots, y being greater than x. In an aspect, each subslot of the y subslots may include a first portion having one or more symbols for carrying at least one of data or control information, a second portion having a gap, and a third portion for carrying ACK/NACK information associated with the first portion. In an aspect, the second portion may be between the first portion and the third portion. In an aspect, the second portion and the third portion may include at most one symbol. The apparatus may send information indicating the subslot configuration to at least one neighboring base station. The apparatus may communicate content with a user equipment (UE) during at least one of the y subslots.

公开(公告)号：US10396943B2

公开(公告)日：2019-08-27

申请号：US15841278

申请日：2017-12-13

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Jing Sun ,  Shimman Arvind Patel ,  Hao Xu

IPC: H04L1/18 ,  H04W72/12 ,  H04L23/00 ,  H04W56/00 ,  H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described that identify an uplink transmission time interval (TTI) length for uplink transmissions, and a downlink TTI length for downlink transmissions, in which the uplink TTI length and the downlink TTI length may be different. The downlink TTI length may be a shortened TTI (sTTI) length, and the uplink TTI length may be longer than the downlink sTTI length. Various parameters for transmissions may be determined based on one or more of the uplink TTI length or the downlink TTI length, such as one or more of a feedback process transmission timing, a timing advance (TA) value, a transport block size (TBS), a number of spatial layers, a number of component carriers (CCs), or a channel quality information (CQI) reporting type may be determined based on one or more of the uplink TTI length or the downlink TTI length.

公开(公告)号：US20190246422A1

公开(公告)日：2019-08-08

申请号：US16390495

申请日：2019-04-22

Applicant: QUALCOMM Incorporated

Inventor： Tao Luo ,  Shimman Arvind Patel ,  Wanshi Chen ,  Naga Bhushan ,  Yongbin Wei ,  Hao Xu ,  Aleksandar Damnjanovic ,  Tingfang Ji ,  Durga Prasad Malladi ,  Srinivas Yerramalli ,  Peter Gaal

IPC: H04W74/00 ,  H04W74/08 ,  H04L27/26 ,  H04L5/00 ,  H04L5/14 ,  H04W56/00

CPC classification number: H04W74/002 ,  H04L5/001 ,  H04L5/0023 ,  H04L5/0028 ,  H04L5/003 ,  H04L5/0053 ,  H04L5/0064 ,  H04L5/0091 ,  H04L5/0092 ,  H04L5/14 ,  H04L27/261 ,  H04L27/2613 ,  H04W56/00 ,  H04W74/0808 ,  H04W74/0833

Abstract: Techniques are described for wireless communication. A first method includes transmitting a first signal to indicate accessing a first channel in a radio frequency spectrum band, and transmitting information with the first signal in the radio frequency spectrum band. A second method includes winning contention to access a radio frequency spectrum band, and after the winning contention to access the radio frequency spectrum band, transmitting a first signal to align a starting point of a second signal with a reference boundary associated with the radio frequency spectrum band. A third method includes winning contention to access a radio frequency spectrum band during a first frame period, the first frame selected from a plurality of different frame periods, and transmitting a signal at a periodicity during one or more subframes of the first frame period for each of the plurality of different frame periods.

公开(公告)号：US10368374B2

公开(公告)日：2019-07-30

申请号：US15713250

申请日：2017-09-22

Applicant: QUALCOMM Incorporated

Inventor： Alan Barbieri ,  Hao Xu ,  Vikas Jain ,  Durga Prasad Malladi ,  Awaiz Ahmad Khan ,  Samatha Kotla ,  Balwinderpal Sachdev

IPC: H04W4/00 ,  H04W74/08 ,  H04W52/28 ,  G01S5/00 ,  H04W64/00 ,  H04W52/02 ,  H04L1/00 ,  G01S5/02 ,  H04W28/16

Abstract: Improvements to signaling procedures for use in physical random access channel (PRACH)-based proximity detection are disclosed. Signaling and signaling processes from a serving base station may trigger a more efficient and reliable transmission of PRACH from related user equipment (UE). At the dynamic power nodes (DPNs) monitoring for such PRACH-based proximity, features are disclosed which establish neighbor lists for more efficient management of detection and proximity activation.

公开(公告)号：US10362571B2

公开(公告)日：2019-07-23

申请号：US15673085

申请日：2017-08-09

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Wanshi Chen ,  Hao Xu

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00 ,  H04W72/12 ,  H04W52/02

Abstract: Various devices, methods, and processes are provided for handling conflicting and/or redundant power control and triggering information for transmitting reference signal(s) such as sounding reference signal (SRS) using carrier aggregation (CA). A user equipment (UE) receives a first downlink control information (DCI) and a second DCI including SRS control information that is in conflict with that of the first DCI, for controlling SRS transmission on a component carrier (CC). The UE determines a resolution to reconcile the conflict between the DCIs. Then the UE can transmit an SRS on the CC in accordance with the resolution.

公开(公告)号：US10334617B2

公开(公告)日：2019-06-25

申请号：US15178253

申请日：2016-06-09

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Wanshi Chen ,  Hao Xu

IPC: H04L5/00 ,  H04W4/70 ,  H04W72/12 ,  H04H20/16 ,  H04B1/713 ,  H04W48/10 ,  H04W88/02

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device (such as a machine type communications (MTC) device) may determine one or more scheduling parameters for a system information block (SIB) based on the bandwidth or duplexing configuration of a communication link. The scheduling parameters may include a repetition level, a transport block size, a subframe index, or the like; and the scheduling parameters may depend on signaling in a broadcast communication (e.g., a master information block (MIB)) or a frequency hopping configuration, or both. In some cases, a broadcast channel may be scheduled during a transmission time interval (TTI) within a narrowband region of a system bandwidth. Available resources within the TTI may be identified and the SIB may be mapped to the available resources within the narrowband region based on the location of the broadcast information.