公开(公告)号：US20210068158A1

公开(公告)日：2021-03-04

申请号：US16566702

申请日：2019-09-10

Applicant: QUALCOMM Incorporated

Inventor： Naga Sekhar SURUVU ,  Raghavendra Shyam ANANDA ,  Srikanth MENON ,  Siva Kishore Reddy YERRAPAREDDY ,  Karthik Pavan Krishna BHOGARAJU ,  Rasul Mastan MAHAMMAD

IPC: H04W74/08 ,  H04W74/00

Abstract: Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive configuration information from a base station. The UE may determine, based at least in part on the configuration information, a number of subframes available within a random access response (RAR) time window for downlink control channel communications. The UE may modify a random access procedure based on the determined number of subframes available within the RAR time window for the downlink control channel communications. In one example, modifying the random access procedure may include skipping a decoding attempt using a decoding hypothesis. In another example, modifying the random access procedure may include aborting the random access procedure.

公开(公告)号：US20200029256A1

公开(公告)日：2020-01-23

申请号：US16507820

申请日：2019-07-10

Applicant: QUALCOMM Incorporated

Inventor： Alberto RICO ALVARINO ,  Le LIU ,  Umesh PHUYAL ,  Mungal Singh DHANDA ,  Raghavendra Shyam ANANDA ,  Srikanth MENON

IPC: H04W36/00 ,  H04W36/08 ,  H04W68/00 ,  H04W72/04 ,  H04W76/28 ,  H04W24/08

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive information indicating whether measurement is permitted on a non-anchor carrier; and selectively perform a measurement on at least one of the non-anchor carrier or an anchor carrier, based at least in part on the information indicating whether the measurement is permitted on the non-anchor carrier. Numerous other aspects are provided.

公开(公告)号：US20200236173A1

公开(公告)日：2020-07-23

申请号：US16255435

申请日：2019-01-23

Applicant: QUALCOMM INCORPORATED

Inventor： Raghavendra Shyam ANANDA ,  Srikanth MENON ,  Ganesh NAGAMANI ,  Anand RAJURKAR

IPC: H04L29/08 ,  H04L27/00 ,  H04W56/00 ,  H04W72/04 ,  H04B17/318 ,  H04W48/10

Abstract: A user equipment (UE) performs wireless communication by starting a scan of an absolute radio frequency channel number (ARFCN) configured for performing a narrowband communication. The UE determines, based on a spectral characteristic of a phase of a signal in the ARFCN, whether a cellular communication is deployed in the ARFCN. The UE may then terminate the scan of the ARFCN in response to the spectral characteristic of the phase of the signal in the ARFCN indicating that the cellular communication is deployed in the ARFCN. Alternatively, the UE may proceed with a synchronization signal search on the ARFCN in response to the spectral characteristic of the phase of the signal in the ARFCN indicating that the cellular communication is not deployed in the ARFCN.

公开(公告)号：US20190313268A1

公开(公告)日：2019-10-10

申请号：US16371687

申请日：2019-04-01

Applicant: QUALCOMM Incorporated

Inventor： Raghavendra Shyam ANANDA ,  Srikanth MENON ,  Alberto RICO ALVARINO ,  Le LIU ,  Tae Min KIM

IPC: H04W24/08 ,  H04W72/12

Abstract: Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may receive a configuration for identifying narrowband reference signal (NRS) tones that are to be received in association with a scheduled paging occasion, wherein the NRS tones are configured to be received via a non-anchor carrier regardless of whether a page is to be received in connection with the scheduled paging occasion; and receive the NRS tones via the non-anchor carrier based at least in part on the configuration. Numerous other aspects are provided.

公开(公告)号：US20240389154A1

公开(公告)日：2024-11-21

申请号：US18318631

申请日：2023-05-16

Applicant: QUALCOMM Incorporated

Inventor： Srikanth MENON ,  Raghuveer Ramakrishna Srinivas TARIMALA

IPC: H04W74/08 ,  H04B7/185

Abstract: This disclosure provides methods, components, devices and systems for optimized RACH procedures in NTNs including NB-IoT. A UE performs in an NTN one or more of a first or second procedure in an idle mode, or a third procedure in a connected mode. In the first procedure, the UE considers a number of RAPIDs in msg2, and if the number meets a threshold, the UE applies a backoff to delay sending msg1. In the second procedure, if the UE fails to decode msg2 or msg4 after transmitting msg1, the UE applies a backoff before performing subsequent RACH. In the third procedure, following a failure to receive an uplink grant when monitoring a USS and after transmitting msg1 for a SR, the UE continues monitoring the USS for the grant until the start of a RAR window. If the uplink grant is received during this time, the UE cancels msg2 monitoring.

公开(公告)号：US20210092677A1

公开(公告)日：2021-03-25

申请号：US16580321

申请日：2019-09-24

Applicant: QUALCOMM Incorporated

Inventor： Jayesh BATHIJA ,  Liangchi HSU ,  Raghavendra Shyam ANANDA ,  Srikanth MENON ,  Kirankumar Bhoja ANCHAN

IPC: H04W52/02

Abstract: Methods for conserving power in a multi-mode wireless device capable of communicating via a first radio access technology (RAT) and second RAT in which communication using the first RAT is preferred are disclosed. Various embodiments may include methods to determine whether a condition warrants attempting a connection with the first RAT in response to the multi-mode wireless device communicating using the second RAT, in response to determining that no condition warrants attempting a wireless connection using the first RAT, continue to communicate using the second RAT for a first duration before again determining whether a condition warrants attempting a connection with the first RAT, and determine whether a connection can be made to the first preferred RAT in response to determining that a condition warrants attempting a wireless connection using the first RAT.

公开(公告)号：US20200322890A1

公开(公告)日：2020-10-08

申请号：US16833443

申请日：2020-03-27

Applicant: QUALCOMM Incorporated

Inventor： Srikanth MENON ,  Raghavendra Shyam Ananda ,  Praveen Maruthoormana Purushothaman

IPC: H04W52/02 ,  H04W4/70 ,  H04W24/10

Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may be a narrowband Internet of thing (NB-IoT) user equipment (UE). Further, the apparatus may be configured to receive NB reference signals (NRS) on a NB channel during a gap between reception events, perform link quality measurements based on the NRS received during an evaluation time interval, the evaluation time interval being shorter than the gap between the reception events, determine whether a link quality is greater than or equal to a first threshold, during the evaluation time interval, based on the link quality measurements, and determine whether to enable an autonomous reception (RX) sleep mode for a remaining duration of the gap between the reception events based at least in part on determining whether the link quality is greater than or equal to the first threshold value.

公开(公告)号：US20190394740A1

公开(公告)日：2019-12-26

申请号：US16019174

申请日：2018-06-26

Applicant: QUALCOMM Incorporated

Inventor： Srikanth MENON ,  Raghavendara Shyam ANANDA

IPC: H04W56/00 ,  H04L29/08

Abstract: Disclosed is a method and apparatus for reducing timing drift where a UE computes an NSSS based timing error using a cross correlation. Next, timing drift is measured as the difference in timing error at two NSSS instances separated by a time duration. The timing drift value can then be mapped to a raster offset.

公开(公告)号：US20190305899A1

公开(公告)日：2019-10-03

申请号：US16368670

申请日：2019-03-28

Applicant: QUALCOMM Incorporated

Inventor： Alberto RICO ALVARINO ,  Tae Min KIM ,  Le LIU ,  Raghavendra Shyam ANANDA ,  Wanshi CHEN ,  Ayan SENGUPTA ,  Srikanth MENON

IPC: H04L1/20 ,  H04W4/80 ,  H04L1/00 ,  H04W72/04 ,  H04W74/08 ,  H04W24/10 ,  H04W24/08

Abstract: In some aspects, a method for a user equipment (UE) is provided. In some examples, the UE determines a signal quality for communicating with a node. The UE determines a coverage level based on the signal quality, wherein the coverage level indicates resources to be used for communicating with the node. The UE determines a maximum repetition level and a repetition value, based on the coverage level, for communicating with the node. The UE generates a multibit repetition range identifier that indicates the repetition value based on the maximum repetition level. The UE transmits the multibit repetition range identifier.

公开(公告)号：US20190268949A1

公开(公告)日：2019-08-29

申请号：US16273904

申请日：2019-02-12

Applicant: QUALCOMM Incorporated

Inventor： Srikanth MENON ,  Raghavendra Shyam ANANDA ,  Praveen Maruthoormana PURUSHOTHAMAN ,  Alberto RICO ALVARINO ,  Mungal Singh DHANDA ,  Le LIU

IPC: H04W74/08 ,  H04B17/336 ,  H04W24/10 ,  H04W76/10 ,  H04B17/327

Abstract: An aspect of the present disclosure includes methods, systems, and computer-readable media for receiving, at the UE, a random access response including a first signal via a first physical channel and a second signal via a second physical channel from a base station (BS), generating a connection request based on the random access response, estimating a carrier to interference plus noise ratio (CINR) of a random-access channel based on at least one the first signal or the second signal, and sending a message including the CINR and the connection request to the BS in response to the random access response.