公开(公告)号：US11005620B2

公开(公告)日：2021-05-11

申请号：US16008908

申请日：2018-06-14

Applicant: QUALCOMM Incorporated

Inventor： Seyong Park ,  Renqiu Wang ,  Yi Huang ,  Hao Xu ,  Peter Gaal

IPC: H04W4/00 ,  H04L5/00 ,  H04L27/26

Abstract: Various aspects described herein relate to techniques for uplink reference signal sequence design in wireless communications systems. A method, a computer-readable medium, and an apparatus are provided. In an aspect, the method includes identifying a set of sequences to include at least a base sequence, a reverse order sequence of the base sequence, a complex conjugate sequence of the base sequence, or a reverse order complex conjugate sequence of the base sequence, and transmitting an uplink reference signal based on at least one of the sequences in the set. The techniques described herein may apply to different communications technologies, including 5th Generation (5G) New Radio (NR) communications technology.

公开(公告)号：US20210099996A1

公开(公告)日：2021-04-01

申请号：US17119946

申请日：2020-12-11

Applicant: QUALCOMM Incorporated

Inventor： Naga Bhushan ,  Durga Prasad Malladi ,  Hao Xu ,  Yongbin Wei ,  Wanshi Chen

IPC: H04W72/04

Abstract: Methods, systems, and devices are described for providing allocations and signaling for different types of communications within a wireless communication system. An eNB and/or a UE may be configured to operate within the wireless communication system using two or more different types of communications. The different types of communications may differ, for example, based on round trip time (RTT) between transmission and acknowledgment of receipt of the transmission, a transmission time interval (TTI) for wireless transmissions, and/or duty cycle timing of wireless transmissions. Reserved resources within a system bandwidth may be identified for a first type of communications, and all or a portion of remaining resources within the system bandwidth may be allocated for other communications that may differ from the first type of communications based on, for example, RTT, TTI, and/or duty cycle timing.

公开(公告)号：US10952210B2

公开(公告)日：2021-03-16

申请号：US15593275

申请日：2017-05-11

Applicant: QUALCOMM Incorporated

Inventor： Peter Gaal ,  Wanshi Chen ,  Hao Xu ,  Alberto Rico Alvarino

IPC: H04W72/04 ,  H04L5/00 ,  H04W52/02 ,  H04L27/26 ,  H04W4/70 ,  H04W8/22 ,  H04W24/08

Abstract: Aspects of the present disclosure provide techniques and apparatus for determining presence and/or bandwidth of reference signals (RS) in systems that utilize narrowband regions of wider system bandwidth for wireless communications, such as enhanced machine type communication(s) (eMTC) systems and/or narrowband Internet-of-Things (NB-IoT) systems. Aspects provide a method for wireless communications by a user equipment (UE) operating in a narrowband region of a wider system bandwidth. The method generally includes determining at least one of: a presence of one or more RS in a subframe or a bandwidth of the one or more RS, wherein the bandwidth of the one or more RS is greater than or equal to a bandwidth of the narrowband region; and monitoring for the one or more RS in the subframe based on the determination.

公开(公告)号：US10952192B2

公开(公告)日：2021-03-16

申请号：US14444704

申请日：2014-07-28

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Wanshi Chen ,  Peter Gaal ,  Tingfang Ji

IPC: H04W72/02 ,  H04W72/04 ,  H04W76/28 ,  H04W52/02 ,  H04W4/70

Abstract: Aspects of the present disclosure provided techniques that may be applied in systems that utilize bundled transmissions from a base station (e.g., an eNodeB) to a user equipment (UE), when a user equipment (UE) is in a connected mode of operation. An exemplary method performed by a UE for processing a downlink control channel sent as a bundled transmission over a bundle of subframes, comprises determining when to start monitoring for the control channel; and monitoring for the control channel in a limited number of downlink subframes, based on the determination.

公开(公告)号：US10932286B2

公开(公告)日：2021-02-23

申请号：US16160854

申请日：2018-10-15

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Durga Prasad Malladi ,  Peter Gaal ,  Yongbin Wei ,  Hao Xu ,  Shimman Arvind Patel ,  Aleksandar Damnjanovic

IPC: H04W72/12 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A receiving device may detect a signal associated with low latency transmissions and decode a non-low latency communication accordingly. The receiving device may receive an indicator from a transmitting device that indicates where and when low latency communications occur. The indication may specify frequency resources or symbols used by the low latency communication. The indicator may be transmitted during the same subframe as the low latency communication, at the end of a subframe, or during a subsequent subframe. The receiving device may use the indicator to mitigate low latency interference, generate channel estimates, and reliably decode the non-low latency communication. In some cases, the interfering low latency communication may occur within the serving cell of the receiving device; or the interfering low latency communication may occur in a neighboring cell.

公开(公告)号：US10931411B2

公开(公告)日：2021-02-23

申请号：US15917487

申请日：2018-03-09

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Wanshi Chen ,  Hao Xu ,  Peter Gaal ,  Tao Luo ,  Sony Akkarakaran

IPC: H04W72/00 ,  H04L1/18 ,  H04L5/00 ,  H04W72/04 ,  H04W72/12 ,  H04B7/06 ,  H04L1/12 ,  H04W72/02

Abstract: A method and apparatus for enabling an UE to selecting acknowledgement/non-acknowledgement (ACK/NACK) resources from a subset of a gNB resource pool. The example method may receive, from an gNB, a radio resource control (RRC) configuration indicating a UE-specific resource set that is a subset of a gNB resource pool. The UE may determine one or more ACK/NACK resources from the UE-specific resource set for an upcoming physical uplink control channel (PUCCH). In some aspects, the UE may determine the one or more ACK/NACK resources based on receiving, from the gNB, a physical downlink control channel (PDCCH) including a corresponding ACK/NACK resource configuration. In other aspects, the RRC may contain multiple resource subsets and the UE may determine the one or more ACK/NACK resources based on determining a size of a payload for a UCI to be transmitted on the PUCCH. The aspects may thus enable dynamic ACK/NACK resource allocation.

公开(公告)号：US10917888B2

公开(公告)日：2021-02-09

申请号：US16593800

申请日：2019-10-04

Applicant: QUALCOMM Incorporated

Inventor： Chih Ping Li ,  Chong Li ,  Jing Jiang ,  Wanshi Chen ,  Hao Xu ,  Haitong Sun

IPC: H04L1/18 ,  H04W72/04 ,  H04B7/14 ,  H04L5/00 ,  H04L25/02 ,  H04L27/26 ,  H04L12/26 ,  H04W88/02

Abstract: Transmission time interval (TTI) bundling for ultra-reliable low-latency communication (URLLC) uplink and downlink transmissions is discussed in which a base station or user equipments (UEs) determine conditions for one or more served UEs that would indicate enabling TTI bundling for data and/or control transmissions. The serving base station transmits an enablement signal signifying that TTI bundling will be performed for data and/or control transmissions. The enablement signal may include a bundle length for the transmission bundle. The data or control signal packets may then be repeatedly transmitted to the UEs a number of times corresponding to the bundle length.

公开(公告)号：US10917875B2

公开(公告)日：2021-02-09

申请号：US15593004

申请日：2017-05-11

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Hao Xu ,  Seyed Ali Akbar Fakoorian ,  Renqiu Wang ,  Wanshi Chen

IPC: H04W72/00 ,  H04W4/06 ,  H04W76/34 ,  H04W4/70 ,  H04L1/08 ,  H04W24/08 ,  H04W72/04

Abstract: Aspects of the present disclosure provide techniques and apparatus for multicast/broadcast for enhanced machine type communications (eMTC) and/or narrowband internet-of-things (NB-IoT). In one aspect, a method is provided which may be performed by a wireless device such as a user equipment (UE), which can be a low cost device such as an eMTC UE or NB-IoT device. The method generally includes determining at least one narrowband region of a wideband region for receiving at least one of: multicast information or broadcast information in at least one subframe; and receiving the at least one of: the multicast information or the broadcast information in the determined at least one narrowband region in the at least one subframe.

公开(公告)号：US10911192B2

公开(公告)日：2021-02-02

申请号：US16246139

申请日：2019-01-11

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Kirankumar Bhoja Anchan ,  Shashidhar Vummintala ,  Srinivasan Balasubramanian ,  Hao Xu ,  Parvathanathan Subrahmanya ,  Seyed Ali Akbar Fakoorian ,  Peter Gaal ,  Gowrisankar Somichetty

IPC: H04L5/00 ,  H04L29/06 ,  H04W72/12 ,  H04W72/14

Abstract: Aspects of the present disclosure relate to methods and apparatus for optimizing real time services (e.g., such as a voice over Long Term Evolution (LTE) (VoLTE)) for devices with limited communications resources, such as machine type communication (MTC) devices and enhanced MTC (eMTC) devices. In one aspect, a UE determines a first configuration of subframes within at least one radio frame available for the UE and other UEs to use for bundled communications with a BS. The UE receives an indication of one or more subframes within the at least one radio frame that are unavailable for bundled uplink transmissions, and determines a second configuration of subframes to use for bundled communications based on the indication. The UE overrides the first configuration of subframes with the second configuration of subframes, and communicates with the BS using the second configuration of subframes. Numerous other aspects are provided.

公开(公告)号：US10892846B2

公开(公告)日：2021-01-12

申请号：US16392897

申请日：2019-04-24

Applicant: QUALCOMM Incorporated

Inventor： Hao Xu ,  Wanshi Chen ,  Tingfang Ji ,  Peter Gaal

IPC: H04L1/18 ,  H04L5/00 ,  H04L1/00 ,  H04L1/12

Abstract: Aspects of the present disclosure provide techniques for enhanced transmission time interval (TTI) bundling design for machine type communications (MTC). A method for wireless communications by a wireless device is provided. The method generally includes determining a mapping of one or more uplink or downlink channels to one or more fixed bundling sizes, wherein each of the one or more fixed bundling sizes indicates a number of transmission time intervals (TTIs) over which a channel should be transmitted and processing transmission of the one or more uplink or downlink channels based on the mapping.