公开(公告)号：WO2022169538A1

公开(公告)日：2022-08-11

申请号：PCT/US2022/011136

申请日：2022-01-04

Applicant: QUALCOMM INCORPORATED

Inventor： MEYLAN, Arnaud ,  KANAMARLAPUDI, Sitaramanjaneyulu ,  DALMIYA, Vishal ,  LEE, Kuo-Chun ,  MAHESHWARI, Shailesh ,  RAO, Vaishakh ,  BALASUBRAMANIAN, Arun Prasanth ,  KRISHNAMURTHY, Subashini ,  ZACHARIAS, Leena ,  SEKAR, Sivashankar ,  BATHWAL, Saket ,  HSU, Liangchi ,  TARIMALA, Raghuveer Ramakrishna Srinivas

IPC: H04L1/18

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive, from a base station, a control message indicating a resource configuration for uplink and downlink transmissions. The UE may determine an uplink buffer threshold for a modem buffer of the UE based on the resource configuration. The UE may transmit, to the base station, a feedback request message requesting that the base station provide feedback for at least one previously transmitted uplink packet based on a comparison of an amount of previously transmitted uplink data and scheduled uplink data stored in the modem buffer relative to the uplink buffer threshold. The UE may receive, based on transmitting the feedback request message, a feedback response message corresponding to a first previously transmitted uplink packet of the at least one previously transmitted uplink packet.

公开(公告)号：WO2018165941A1

公开(公告)日：2018-09-20

申请号：PCT/CN2017/076947

申请日：2017-03-16

Applicant: QUALCOMM INCORPORATED ,  SEKAR, Sivashankar ,  BATHWAL, Saket ,  WU, Peng ,  LIU, Haiqin ,  XIAO, Gang

Inventor： SEKAR, Sivashankar ,  BATHWAL, Saket ,  WU, Peng ,  LIU, Haiqin ,  XIAO, Gang

IPC: H04W52/22 ,  H04W52/24 ,  H04W74/08

CPC classification number: H04W74/0833 ,  H04L5/006 ,  H04W52/146 ,  H04W52/22 ,  H04W52/245 ,  H04W52/325 ,  H04W52/50 ,  H04W56/0015

Abstract: Certain aspects of the present disclosure relate to methods and apparatus for optimizing performance of random access procedures by a user equipments (UE). According to aspects, the UE may be configured to obtain one or more settings for uplink transmissions to an eNodeB, the one or more settings having been determined from a previous connection with the eNodeB, and perform a random access procedure based on the obtained one or more settings.

公开(公告)号：WO2022040973A1

公开(公告)日：2022-03-03

申请号：PCT/CN2020/111331

申请日：2020-08-26

Applicant: QUALCOMM INCORPORATED ,  FU, Miao ,  WANG, Yan ,  TARIMALA, Raghuveer Ramakrishna Srinivas ,  SEKAR, Sivashankar ,  SHANG, Aimin ,  LI, Jian ,  ZHANG, Hao ,  HE, Wei

Inventor： FU, Miao ,  WANG, Yan ,  TARIMALA, Raghuveer Ramakrishna Srinivas ,  SEKAR, Sivashankar ,  SHANG, Aimin ,  LI, Jian ,  ZHANG, Hao ,  HE, Wei

IPC: H04W24/00

Abstract: Certain aspects of the subject matter described in this disclosure can be implemented in a method for wireless communication by a user equipment (UE). The method generally includes determining that a first data unit was not successfully received by the UE, the first data unit being a RLC data unit, receiving, from a base station, a grant scheduling transmission of a second data unit, generating the second data unit having an indication that the first data unit was not successfully received; and transmitting the second data unit to the base station.

公开(公告)号：WO2021097031A1

公开(公告)日：2021-05-20

申请号：PCT/US2020/060141

申请日：2020-11-12

Applicant: QUALCOMM INCORPORATED

Inventor： SEKAR, Sivashankar ,  BATHWAL, Saket ,  HSU, Liangchi ,  TARIMALA, Raghuveer Ramakrishna Srinivas

IPC: H04L1/16 ,  H04L1/18

Abstract: Methods, systems, and devices for wireless communications are described. A communication device, otherwise known as a user equipment (UE) may transmit a data transmission to a receiver. In some examples, the data transmission may be a radio link control (RLC) protocol data unit (PDU) transmission. The UE may store the data transmission in a retransmission buffer, and transmit a feedback request to the receiver in a subsequent data transmission based on a system memory utilization threshold for the retransmission buffer being satisfied due to storage of the data transmission.

公开(公告)号：WO2019169576A1

公开(公告)日：2019-09-12

申请号：PCT/CN2018/078280

申请日：2018-03-07

Applicant: QUALCOMM INCORPORATED ,  SEKAR, Sivashankar ,  BATHWAL, Saket ,  WU, Peng

Inventor： SEKAR, Sivashankar ,  BATHWAL, Saket ,  WU, Peng

IPC: H04W52/48

Abstract: Aspects of the present disclosure provide techniques and apparatus for wireless communication. In one aspect, a method is provided which may be performed by a wireless device such as a user equipment (UE). The method generally includes: attempting a random access channel (RACH) procedure, at a first coverage enhancement (CE) level, with a base station (BS); determining a random access response (RAR) reception from the BS failed; measuring signal quality of the BS observed at the UE in response to the determined RAR reception failure; determining whether to adjust the first CE level to a second CE level based at least in part on the measured signal quality; and starting a next RACH procedure attempt, at the first CE level or the second CE level, with the BS. In one aspect, a method is provided which may be performed by a wireless device such as a UE, for example, that is preparing for a random access channel (RACH) procedure with a base station (BS). The method generally includes: measuring signal quality of the BS observed at the UE; determining a coverage enhancement (CE) level and a RACH attempt counter value based at least in part of the measured signal quality; and attempting the RACH procedure based at least in part on the determined CE level and RACH attempt counter value.

公开(公告)号：WO2019161524A1

公开(公告)日：2019-08-29

申请号：PCT/CN2018/076941

申请日：2018-02-22

Applicant: QUALCOMM INCORPORATED ,  BATHWAL, Saket ,  BRESSANELLI, Dominique Francois ,  XIAO, Gang ,  LIU, Haiqin ,  WU, Peng ,  SEKAR, Sivashankar

Inventor： BATHWAL, Saket ,  BRESSANELLI, Dominique Francois ,  XIAO, Gang ,  LIU, Haiqin ,  WU, Peng ,  SEKAR, Sivashankar

IPC: H04W24/10 ,  H04W28/02

Abstract: Methods, systems, and devices for wireless communications are described. A user equipment (UE) may receive an uplink grant identifying a next transmission opportunity. The UE may determine that transmission of a buffer status report (BSR) would interfere with transmission of additional queued data. In some cases, the transmission of BSRs may have precluded transmission of the additional queued data. The UE may determine that a number of prior transmissions in which control data or signaling data was not sent satisfies a threshold. The UE may further transmit a truncated BSR during the next transmission opportunity based at least in part on the threshold being satisfied. The truncated BSR may include buffer information for a highest priority logical channel group or buffer information for the logical channel group that includes the most queued data. The UE may also transmit additional queued data during the next transmission opportunity.

公开(公告)号：WO2018223303A1

公开(公告)日：2018-12-13

申请号：PCT/CN2017/087394

申请日：2017-06-07

Applicant: QUALCOMM INCORPORATED ,  SEKAR, Sivashankar ,  CHEN, Xiaochen ,  HANDA, Omesh Kumar ,  BATHWAL, Saket ,  WU, Peng ,  DANG, Zhibin ,  NARASAREDDY, Sivaguru

Inventor： SEKAR, Sivashankar ,  CHEN, Xiaochen ,  HANDA, Omesh Kumar ,  BATHWAL, Saket ,  WU, Peng ,  DANG, Zhibin ,  NARASAREDDY, Sivaguru

IPC: H04W72/12 ,  H04W74/08

CPC classification number: H04W72/12 ,  H04W74/08

Abstract: Aspects of the present disclosure provide techniques to enable random access channel (RACH) enhancements over previously known techniques for narrowband (e.g., narrowband Internet-of-Things (NB-IoT) ) communications systems. An example method includes receiving a first allocation of frequency resources for a first period for receiving a downlink (DL) transmission or transmitting an uplink (UL) transmission, and postponing transmission of a random access channel (RACH) by the UE during the period.