Li Yun Su

US Patent:

20130176873, Jul 11, 2013

Filed:

Sep 20, 2012

Appl. No.:

13/623807

Inventors:

Zhu Ji - San Diego CA, US
Jason Shi - Pleasanton CA, US
Johnson Sebeni - Fremont CA, US
Navid Damji - Cupertino CA, US
Li Su - Cupertino CA, US

International Classification:

H04L 12/26
H04W 24/00

US Classification:

370252, 455 6711

Abstract:

Methods and apparatus for adaptively adjusting temporal parameters such as e.g., wake-up times of digital tracking algorithms (such as timing, frequency and power control). In one exemplary embodiment, wake-up times for tracking loops are based on success/error metrics (e.g., Block Error Rate (BLER), Bit Error Rate (BER), Packet Error Rate (PER), Cyclic Redundancy Checks (CRC), etc.) of one or more previous discontinuous reception (DRX) cycles. In a second embodiment, wake-up times for tracking loops are based on residual frequency and timing errors, etc.

US Patent:

20130279353, Oct 24, 2013

Filed:

Sep 26, 2012

Appl. No.:

13/627936

Inventors:

Zhu Ji - San Diego CA, US
Jason Shi - Pleasanton CA, US
Johnson Sebeni - Fremont CA, US
Navid Damji - Cupertino CA, US
Li Su - Cupertino CA, US

Assignee:

Apple Inc. - Cupertino CA

International Classification:

H04W 24/10
H04W 52/02

US Classification:

370252, 370241

Abstract:

Methods and apparatus for managing radio measurements during discontinuous reception. In one exemplary embodiment, the distribution of Long Term Evolution (LTE) DRX measurements is staggered or distributed across multiple DRX cycles (which may be contiguous or non-contiguous) so as to reduce the transceiver activity and power consumption. The exemplary UE in one implementation only performs a subset of measurements during each DRX cycle. By staggering or distributing cell measurements over multiple DRX cycles, the UE can improve power consumption, while still conforming to measurement requirements.

US Patent:

20230107904, Apr 6, 2023

Filed:

Sep 23, 2022

Appl. No.:

17/934928

Inventors:

- Cupertino CA, US
Erdogan Dede - San Diego CA, US
Rajshekhar Oruganti - Bangalore, IN
Shrenik Patravali - San Diego CA, US
Trushang Shah - Bangalore, IN
Li Su - Cupertino CA, US
Baris Efe - San Diego CA, US
Satheesha B. Rangegowda - San Diego CA, US
Praveen Janarthanan - San Diego CA, US
Zhao Wang - San Diego CA, US
Bin Hu - San Diego CA, US

International Classification:

H04B 1/58
H04W 72/04
H04W 72/12

Abstract:

A process for dual subscriber identity module (SIM) dual standby (DR-DSDS) operation including receiving event data indicating a trigger event configuring radio frequency (RF) hardware; identifying a conflict between a communication band of a first SIM and a communication band of a second SIM for DR-DSDS operation; determining a type of the conflict; determining, a first priority value for a component carrier (CC) corresponding to the first SIM, and a second priority value for a CC corresponding to the second SIM, the first and second priority values based at least on the type of the conflict; determining a timing scenario for configuring the RF hardware; searching for a RF hardware configuration to resolve the conflict based on the first and second priority values; and generating RF handle data, corresponding to the conflict resolution, specifying a RF hardware configuration for the DR-DSDS operation.

US Patent:

20230078257, Mar 16, 2023

Filed:

Sep 24, 2022

Appl. No.:

17/935098

Inventors:

- Cupertino CA, US
Muthukumaran Dhanapal - San Diego CA, US
Li Su - San Diego CA, US
Sharad Garg - Cupertino CA, US
Syed A. Rahim - Dallas TX, US
Sandeep K. Sunkesala - Cupertino CA, US
Jia Tang - San Jose CA, US
Vijay Gadde - Cupertino CA, US
Tarakkumar G. Dhanani - San Jose CA, US
Muhammad Saad - Sachse TX, US

International Classification:

H04W 36/08
H04W 76/11
H04W 76/27
H04B 17/318
H04W 76/19
H04W 72/04
H04W 52/24
H04W 74/08

Abstract:

Disclosed are embodiments for reducing likelihood of selecting a cell identified by a Radio Access Network (RAN) Notification Area ID (RNA ID) that is different from that identifying a last or current serving cell so as to avoid an RNA update procedure; reducing Random Access Channel (RACH) transmissions for an RNA update procedure and a mobile originated (MO) data transmission in response to a Radio Resource Control (RRC) triggered RNA update procedure; and selecting a band or beam in a multi-band/beam cellular system that improves RACH efficiency.

US Patent:

20210410030, Dec 30, 2021

Filed:

Jun 29, 2020

Appl. No.:

16/915893

Inventors:

- Cupertino CA, US
Muthukumaran Dhanapal - Cupertino CA, US
Li Su - San Diego CA, US
Sharad Garg - Cupertino CA, US
Syed A. Rahim - Cupertino CA, US
Sandeep K. Sunkesala - Cupertino CA, US
Jia Tang - Cupertino CA, US
Vijay Gadde - Cupertino CA, US
Tarakkumar G. Dhanani - Cupertino CA, US
Muhammad Saad - Cupertino CA, US

International Classification:

H04W 36/08
H04W 76/11
H04W 76/27
H04W 74/08
H04W 76/19
H04W 72/04
H04W 52/24
H04B 17/318

Abstract:

Disclosed are embodiments for reducing likelihood of selecting a cell identified by a Radio Access Network (RAN) Notification Area ID (RNA ID) that is different from that identifying a last or current serving cell so as to avoid an RNA update procedure; reducing Random Access Channel (RACH) transmissions for an RNA update procedure and a mobile originated (MO) data transmission in response to a Radio Resource Control (RRC) triggered RNA update procedure; and selecting a band or beam in a multi-band/beam cellular system that improves RACH efficiency.

US Patent:

20210337621, Oct 28, 2021

Filed:

Apr 19, 2021

Appl. No.:

17/234453

Inventors:

- Cupertino CA, US
Li Su - San Diego CA, US
Vijay Venkataraman - Cupertino CA, US

International Classification:

H04W 76/27
H04W 68/00
H04W 76/28
H04W 24/08

Abstract:

A UE in an RRC inactive state may determine an operational state mismatch between an actual RRC operational state for the UE and a stored RRC operational state for the UE maintained at a network node. To determine the mismatch, while the UE is in the RRC inactive state, the UE may monitor at least one of paging messages, serving cell power levels, or neighbor cell power levels. When an operational state mismatch is detected, the UE may initiate a state correction procedure rather than an RRC resume procedure.

US Patent:

20160029314, Jan 28, 2016

Filed:

Oct 1, 2015

Appl. No.:

14/872257

Inventors:

- Cupertino CA, US
Zhu Ji - San Diego CA, US
Johnson Sebeni - Fremont CA, US
Jason Shi - Pleasanton CA, US
Li Su - Cupertino CA, US

International Classification:

H04W 52/02
H04W 36/00
H04B 17/309
H04W 76/04

Abstract:

Methods and apparatus for adaptively adjusting temporal parameters (e.g., neighbor cell search durations). In one embodiment, neighbor cell search durations during discontinuous reception are based on a physical channel metric indicating signal strength and quality (e.g. Reference Signal Received Power (RSRP), Received Signal Strength Indication (RSSI), Reference Signal Receive Quality (RSRQ), etc.) of a cell. In a second embodiment, neighbor cell search durations are based on a multitude of physical layer metrics from one or more cells. In one variant, the multitude of physical layer metrics may include signal strength and quality metrics from the serving base station as well as signal strength and quality indicators from neighbor cells derived from the cells respective synchronization sequences.