公开(公告)号：US10779312B2

公开(公告)日：2020-09-15

申请号：US15807952

申请日：2017-11-09

Applicant: QUALCOMM Incorporated

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

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

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：US20200288472A1

公开(公告)日：2020-09-10

申请号：US16883914

申请日：2020-05-26

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：US10750494B2

公开(公告)日：2020-08-18

申请号：US15067554

申请日：2016-03-11

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04 ,  H04L5/00

Abstract: Methods, systems, and devices for wireless communication are described. A wireless device may establish a configuration for at least one carrier based on multiple transmission time interval (TTI) lengths. Several TTI lengths may be associated in a TTI group, and aspects of the configuration may be the same for all TTIs having a TTI length in the TTI group. The device may then communicate using the carrier configuration based on the TTI group. In some cases, a second TTI group with different TTI lengths from the first group may also be identified, and the device may communicate using TTI from the second group using a different TTI group configuration. Aspects of a TTI group configuration may include a common control channel format, resource allocation granularity, hybrid automatic repeat request (HARQ) process, HARQ timing, soft buffer size, channel state information (CSI) reporting configuration, or an uplink control channel.

公开(公告)号：US10594451B2

公开(公告)日：2020-03-17

申请号：US15674325

申请日：2017-08-10

Applicant: QUALCOMM Incorporated

Inventor： Renqiu Wang ,  Hao Xu ,  Peter Gaal ,  Wanshi Chen ,  Tingfang Ji ,  Shimman Arvind Patel ,  John Edward Smee

IPC: H04L5/00 ,  H04W72/04 ,  H04W72/12

Abstract: Methods, systems, and devices for wireless communication are described that provide for uplink common burst symbol waveform selection and configuration. A waveform for the uplink common burst symbol may be selected to be a single-carrier frequency division multiplexing (SC-FDM) waveform, an orthogonal frequency division multiplexing (OFDM) waveform, or combinations thereof, based at least in part on information that is to be transmitted. A pattern for SC-FDM sequences may be selected to provide enhanced channel estimation through common pilot tones across different sequences, wideband or narrowband sequences may be selected based at least in part on information to be transmitted, and acknowledgment feedback may be transmitted in an end portion of the uplink common burst symbol in some cases to provide additional processing time for determining the acknowledgment feedback.

公开(公告)号：US20200037340A1

公开(公告)日：2020-01-30

申请号：US16570076

申请日：2019-09-13

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/12 ,  H04L5/00 ,  H04W28/02

Abstract: Described techniques provide for prioritization of radio bearers and logical channels based on mixed TTI durations or numerologies of the bearers or logical channels. Two or more bearers may be identified for uplink data transmission that carry data to be transmitted using different TTI durations or numerologies. Each bearer may be prioritized based on the associated bearer type, TTI duration or numerology, or combinations thereof. Additionally, one or more logical channels may be associated with one or more bearers, and also prioritized based on the associated bearer type, TTI duration or numerology, or combinations thereof. A buffer status report (BSR) may be generated that has one or more portions associated with the different priorities of bearers or logical channels. Buffer information associated with the higher priority bearers or logical channels may be provided ahead of buffer information associated with lower priority bearers or logical channels.

公开(公告)号：US10524108B2

公开(公告)日：2019-12-31

申请号：US15260997

申请日：2016-09-09

Applicant: QUALCOMM Incorporated

Inventor： Alberto Rico Alvarino ,  Madhavan Srinivasan Vajapeyam ,  Wanshi Chen ,  Shimman Arvind Patel ,  Hao Xu ,  Juan Montojo ,  Yongbin Wei

IPC: H04W24/04 ,  H04W48/16 ,  H04W72/02 ,  H04W8/00 ,  H04W4/70 ,  H04W40/12 ,  H04L12/703 ,  H04W40/24 ,  H04W48/12 ,  H04W40/22 ,  H04W24/08 ,  H04W56/00 ,  H04W72/08 ,  H04W74/08 ,  H04W36/30 ,  H04W36/00 ,  H04W40/36 ,  H04W84/04 ,  H04W88/02 ,  H04W88/08

Abstract: Certain aspects of the present disclosure provide methods for wireless communications by a base station and a user equipment in a network. An exemplary method generally includes performing a discovery procedure to identify one or more devices through which the UE may indirectly communicate with a base station in the network and deciding based on one or more criteria whether to communicate with the base station directly or to communicate with the base station indirectly via a device identified by the discovery procedure. According to certain aspects, when a UE is in communication with a network indirectly, the network might page the UE directly, indirectly, or both.

公开(公告)号：US20190394810A1

公开(公告)日：2019-12-26

申请号：US16553894

申请日：2019-08-28

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Aleksandar Damnjanovic

IPC: H04W74/08

Abstract: Wireless devices may exchange data related to multiple available random access procedures for network access. A random access procedure of the available random access procedures may be selected, and a random access message transmitted based on the selected random access procedure. Available random access procedures may include procedures that provide for a different number of random access messages or that are for use in communications having different transmission time intervals (TTIs). The available random access procedures may include a contention-based random access procedure, in which an initial random access message may include a payload. In some examples, a number of random access resources may be provided within different frequency resources available to provide efficient usage of a channel bandwidth.

公开(公告)号：US20190394002A1

公开(公告)日：2019-12-26

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

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：US10405334B2

公开(公告)日：2019-09-03

申请号：US15295328

申请日：2016-10-17

Applicant: QUALCOMM Incorporated

Inventor： Shimman Arvind Patel ,  Wanshi Chen ,  Juan Montojo ,  Hao Xu ,  Aleksandar Damnjanovic ,  Seyedkianoush Hosseini

IPC: H04W72/12 ,  H04W72/04 ,  H04W56/00 ,  H04L5/00 ,  H04B17/336 ,  H04B7/06

Abstract: Various aspects described herein relate to scheduling resources in wireless communications. In one aspect, communications can be established with a plurality of user equipment (UE). A set of the plurality of UEs as having an interference impact on one another that is less than a threshold can be determined. A first UE of the set of the plurality of UEs can be scheduled for downlink communications in a first transmission time interval (TTI), and a second UE of the set of the plurality of UEs can be scheduled for uplink communications in a second TTI that is adjacent in time to the first TTI. In another aspect, uplink communications for the first UE can be scheduled in a portion of the guard period TTI based at least in part on determining a timing advance of the first UE is less than a threshold.

公开(公告)号：US10397915B2

公开(公告)日：2019-08-27

申请号：US15460215

申请日：2017-03-15

Applicant: QUALCOMM Incorporated

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

IPC: H04L1/18 ,  H04L5/00 ,  H04L5/14 ,  H04W8/22 ,  H04L27/00 ,  H04L27/26 ,  H04W16/14 ,  H04W24/10 ,  H04W72/04 ,  H04W72/12 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may transmit uplink (UL) messages in unlicensed spectrum with a reduced UL timing delay. The UL timing delay may be reduced by using a shortened transmission time interval (TTI) (e.g., a TTI that is reduced in duration relative to other TTIs in the system or in a legacy system) or by reducing the number of TTIs between a grant and the corresponding UL message. The reduced UL timing delay may decrease the likelihood that the UE will wait for a subsequent transmit opportunity (TxOp) to transmit the UL message. In some cases, the reduced UL timing delay corresponds to a reduced hybrid automatic repeat request (HARQ) processing delay. In some cases, a time difference (e.g., measured in TTIs) between a measurement reference TTI a corresponding channel state information (CSI) report may also be reduced.