公开(公告)号：US11063720B2

公开(公告)日：2021-07-13

申请号：US16561795

申请日：2019-09-05

Applicant: QUALCOMM Incorporated

Inventor： Seyedkianoush Hosseini ,  Wanshi Chen ,  Jing Sun ,  Alberto Rico Alvarino ,  Shimman Arvind Patel

IPC: H04L5/00 ,  H04L27/26 ,  H04W72/04 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communication are described that support sounding reference signal (SRS) transmission in low latency wireless transmissions. A set of shortened transmission time intervals (sTTIs) for uplink transmissions of a first wireless service may be identified; the set of sTTIs located within subframe time boundaries of a subframe of a second wireless service with a longer TTI than the sTTIs. Two or more sTTIs within the set of sTTIs may be used for SRS transmissions within the subframe time boundaries.

公开(公告)号：US10966194B2

公开(公告)日：2021-03-30

申请号：US15068044

申请日：2016-03-11

Applicant: QUALCOMM Incorporated

Inventor： Wanshi Chen ,  Shimman Arvind Patel ,  Peter Gaal ,  Hao Xu

IPC: H04W72/04 ,  H04B7/26 ,  H04L5/00 ,  H04W36/00 ,  H04W72/12

Abstract: Coordinated wireless communications using multiple transmission time intervals (TTIs) are described. Multiple TTIs may include a first TTI and a second TTI, the second TTI having a shorter duration than the first TTI. One or more parameters may be determined for communications using the first TTI and the second TTI. A first parameter of the determined parameters for the second TTI may be associated or linked with a corresponding parameter of the first TTI, and communications using the first TTI or the second TTI may be performed using the first parameter. Wireless network nodes using the first TTI may form a CoMP cooperating set, and wireless network nodes using the second TTI may for another CoMP cooperating set, and the first parameter may be applied to each of the CoMP cooperating sets.

公开(公告)号：US10959216B2

公开(公告)日：2021-03-23

申请号：US16358042

申请日：2019-03-19

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Juan Montojo ,  Jing Sun ,  Seyedkianoush Hosseini

IPC: H04W72/04 ,  H04L5/00 ,  H04L5/14 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communication are described. Data may be received during transmission time intervals (TTIs) that have a short duration relative to other TTIs. The short-duration TTIs may occur within or overlap a longer duration TTI, such as a subframe. Feedback responsive to the data may be generated and assigned for transmission during an uplink TTI according to a feedback timing or delay, which may be selected to reduce latency or balance the payload size of uplink messages sent during the assigned uplink TTI. Data and feedback assignments in short-duration TTIs may be configured based on a time division duplexing (TDD) configuration for some TTIs (e.g., subframes). TTIs that are a Long Term Evolution (LTE) subframe, an LTE slot, and a duration of two LTE symbol periods may be supported. Portions of special TTIs may be used for transmissions according to shorter-duration TTIs.

公开(公告)号：US20210058912A1

公开(公告)日：2021-02-25

申请号：US17076613

申请日：2020-10-21

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Wanshi Chen ,  Seyed Ali Akbar Fakoorian ,  Peter Gaal ,  Shimman Arvind Patel ,  Madhavan Srinivasan Vajapeyam ,  Renqiu Wang ,  Jing Lei ,  Hao Xu

IPC: H04W72/04 ,  H04W72/00 ,  H04L5/00 ,  H04B7/0456

Abstract: Various techniques for narrowband communications in a wireless communications network are provided. Narrowband communications may be transmitted using a single resource block (RB) of a number of RBs used for wideband communications. In order to provide for efficient device discovery and synchronization using narrowband communications, a synchronization signal, such as a primary synchronization signal (PSS) or secondary synchronization signal (SSS), may be transmitted within the single resource block. The synchronization signal may be transmitted, for example, using multiple orthogonal frequency division multiplexing (OFDM) symbols within the single RB. A common reference signal (CRS) may also be present in the single resource block, which may puncture the synchronization signal, in some examples. In other examples, the synchronization signal may be mapped to non-CRS symbols of the single resource block.

公开(公告)号：US10925094B2

公开(公告)日：2021-02-16

申请号：US15956932

申请日：2018-04-19

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Seyedkianoush Hosseini ,  Alberto Rico Alvarino

IPC: H04W4/00 ,  H04W74/08 ,  H04W72/04 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communication are described that provide scheduling request (SR) resources that may be used by a user equipment (UE) to request uplink resources. SR resources may be allocated within random access channel resources, and a UE may use the SR resources to transmit a SR. The random access resources may be allocated in a first duration transmission time interval (TTI) that has a duration that is shorter than a second duration TTI. The SR resources may be a subset of random access preambles associated with the random access resources.

公开(公告)号：US10917878B2

公开(公告)日：2021-02-09

申请号：US15362350

申请日：2016-11-28

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen

IPC: H04W72/04 ,  H04W74/08 ,  H04W72/12 ,  H04W74/00

Abstract: A method for wireless communication at a user equipment (UE) includes transmitting a scheduling request (SR) transmission in a radio frequency spectrum band on at least one resource of a contention-based physical uplink shared channel (PUSCH), and monitoring the radio frequency spectrum band for a response to the SR transmission. A method for wireless communication at a network access device includes receiving, from a UE, a SR transmission in a radio frequency spectrum band on at least one resource of a contention-based PUSCH; determining an availability of uplink resources allocable to the UE; selecting, based at least in part on the determined availability of uplink resources, the response to the SR transmission; and transmitting in the radio frequency spectrum band, to the UE, the selected response to the SR transmission. The response to the SR transmission includes an uplink grant or an acknowledgement of the SR transmission.

公开(公告)号：US10863492B2

公开(公告)日：2020-12-08

申请号：US15164632

申请日：2016-05-25

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Peter Gaal

IPC: H04W72/04 ,  H04W8/00 ,  H04W76/14 ,  H04W4/70 ,  H04L5/00 ,  H04W88/08 ,  H04W88/02 ,  H04W48/12

Abstract: Methods, systems, and devices for wireless communication using various patterns of data and reference signals are described. For example, in a system that supports operation using different duration transmission time intervals (TTIs), a base station may initiate communication with a user equipment (UE) or between two UEs, and UEs may communicate with the base station or with one another using an indicated pattern of data and reference signals. The base station may send a downlink control message indicating a transmission pattern selected from a set of patterns. UEs may identify the pattern based on the indicator and decode a sequence of data and reference signals based on the pattern. In some examples, the sequence may include a set of TTIs, which may have a shorter duration than other TTIs.

公开(公告)号：US20200374906A1

公开(公告)日：2020-11-26

申请号：US16988254

申请日：2020-08-07

Applicant: QUALCOMM Incorporated

Inventor： Ozcan Ozturk ,  Wanshi Chen ,  Jing Sun ,  Shimman Arvind Patel ,  Seyedikianoush Hosseini

IPC: H04W72/12 ,  H04W76/28 ,  H04W52/02 ,  H04W72/14

Abstract: Described techniques provide for communications using multiple different transmission time intervals (TTIs) while in a configured DRX mode that allows efficient scheduling and allocation of resources, and relatively efficient power usage at a user equipment (UE). In some cases, two or more available TTIs for transmissions between a base station and a UE may be identified, and a DRX cycle configured based at least in part on the available TTIs. During monitoring periods of a configured DRX cycle for a first TTI, the UE may be configured to monitor for control signal transmissions associated with a different TTI duration. In some cases, resources for a shorter TTI may be allocated using a two-stage grant. In some cases, multiple component carriers may be configured for one or more different TTIs, and one component carrier may be used to cross schedule resources on other component carriers.

公开(公告)号：US10674501B2

公开(公告)日：2020-06-02

申请号：US16276335

申请日：2019-02-14

Applicant: QUALCOMM Incorporated

Inventor： Jing Sun ,  Wanshi Chen ,  Peter Gaal ,  Shimman Arvind Patel ,  SeyedKianoush Hosseini ,  Hao Xu

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A base station may indicate time and frequency resources for a low latency physical downlink control channel (sPDCCH), which may be different from another physical downlink control channel (PDCCH), to a user equipment (UE). The base station may then transmit a common sPDCCH (CsPDCCH) message to indicate which low latency control channel elements (sCCEs) are used for sPDCCH transmission during a given subframe. In some cases, the signaling used to indicate the initial resource allocation for sPDCCH may be infrequent relative to the CsPDCCH transmissions. If some of the resources initially allocated for sPDCCH are not actually used for sPDCCH during a subframe, the base station and the UE may use those resources for communicating data. For example, the base station may transmit data using a low latency physical downlink shared channel (sPDSCH) to the UE using those resources.

公开(公告)号：US10588103B2

公开(公告)日：2020-03-10

申请号：US16405759

申请日：2019-05-07

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Yongbin Wei ,  Peter Gaal ,  Alberto Rico Alvarino ,  Gordon Walker ,  Wanshi Chen ,  Aleksandar Damnjanovic ,  Juan Montojo

IPC: H04W56/00 ,  H04W72/00 ,  H04W72/04 ,  H04L27/26

Abstract: Aspects of the present disclosure relate to wireless communications and, more particularly, to synchronization for standalone long term evolution (LTE) broadcast. In one aspect, a method is provided which may be performed by a wireless device such as a base station (BS). The method generally includes providing unicast coverage to one or more user equipments (UEs) in a unicast coverage area within a larger coverage area, transmitting unicast data in one or more subframes, and transmitting synchronization signals within one or more of the broadcast subframes, wherein the broadcast signals are transmitted as single frequency network (SFN) transmissions synchronized with transmissions from one or more other base stations providing unicast coverage within the larger coverage area.