公开(公告)号：US12045645B2

公开(公告)日：2024-07-23

申请号：US16945871

申请日：2020-08-02

Applicant: Silicon Laboratories Inc.

Inventor： Subba Reddy Kallam ,  Partha Sarathy Murali ,  Venkat Mattela ,  Venkata Siva Prasad Pulagam

IPC: G06F9/48 ,  G06F9/30 ,  G06F9/38 ,  G06F9/50 ,  H04L49/90 ,  H04L65/60 ,  H04W4/80 ,  H04W12/06 ,  H04W80/02 ,  H04W80/04

CPC classification number: G06F9/4812 ,  G06F9/30101 ,  G06F9/3822 ,  G06F9/3836 ,  G06F9/5061 ,  H04L49/90 ,  H04L65/60 ,  H04W4/80 ,  H04W12/06 ,  H04W80/02 ,  H04W80/04

Abstract: A communication processor is operative to adapt the thread allocation to communications processes handled by a multi-thread processor on an instruction by instruction basis. A thread map register controls the allocation of each processor cycle to a particular thread, and the thread map register is reprogrammed as the network process loads for a plurality of communications processors such as WLAN, Bluetooth, Zigbee, or LTE have load requirements which increase or decrease. A thread management process may dynamically allocate processor cycles to each respective process during times of activity for each associated communications process.

公开(公告)号：US11916679B2

公开(公告)日：2024-02-27

申请号：US17006532

申请日：2020-08-28

Applicant: Silicon Laboratories Inc.

Inventor： Sriram Mudulodu ,  Divyaxi Rudani ,  Manoj Medam ,  Partha Sarathy Murali ,  Ajay Mantha ,  Suchin Gupta

IPC: H04L1/1812 ,  H04L25/03 ,  H04W4/80

CPC classification number: H04L1/1819 ,  H04L1/1816 ,  H04L25/03866 ,  H04W4/80

Abstract: A bitstream modifier is operative on a packet which uses repetition coding. The bitstream modifier increases randomness of the data in a deterministic manner such that spectral spurs from repetition coding are greatly reduced, thereby providing greater available transmit power. In another example of the invention, baseband samples of a header and/or payload for a Bluetooth packet are modified by a canonical sequence with a low slew rate for data such that the variations in frequency may be tracked by a receiver and the transmitted spectral spurs reduced.

公开(公告)号：US11032769B2

公开(公告)日：2021-06-08

申请号：US15845813

申请日：2017-12-18

Applicant: Silicon Laboratories Inc.

Inventor： Partha Sarathy Murali ,  Nagaraja Reddy Anakala ,  Ajay Mantha

IPC: H04W52/02 ,  H04W4/80 ,  H04W4/029 ,  H04W4/06 ,  H04W4/70 ,  H04W84/18 ,  H04W84/12 ,  H04L25/02 ,  H04L27/06

Abstract: A mesh receiver has a wakeup receiver for reception of a wakeup sequence formed by keyed RF or a sequence of wireless packets and gaps, a transmitter forming low speed RF wakeup sequence to other mesh stations, a mesh receiver for reception of high speed WLAN packets, the transmitter sending a wireless ACK packet in response to a wakeup sequence, the mesh receiver thereafter receiving wireless packets from a remote station, the mesh transmitter sending an ACK, the mesh station thereafter identifying a next hop station, and sending a wakeup sequence to that station, after receipt of an ACK, sending the data, the mesh receiver and mesh transmitter thereafter going to sleep.

公开(公告)号：US10817200B2

公开(公告)日：2020-10-27

申请号：US15794008

申请日：2017-10-26

Applicant: Silicon Laboratories Inc.

Inventor： Partha Sarathy Murali ,  Venkata Siva Prasad Pulagam ,  Sailaja Dharani Naga Sankabathula ,  Venkat Rao Gunturu ,  Subba Reddy Kallam

IPC: G06F3/06 ,  G06F13/40

Abstract: A flash memory controller is operative to receive serial commands and command arguments. A flash permissions table identifies each segment of flash memory as READ_ONLY, PRIVATE_R/W or OPEN_R/W. A memory interface is coupled to a flash memory and also the flash permissions table. When a flash memory write operation is received with an associated command argument corresponding to an address indicated as READ_ONLY in the flash permissions table and a DISABLE_WR_REG is true, the write operation is ignored or converted into a non-write command and issued to the flash memory.

公开(公告)号：US12034551B2

公开(公告)日：2024-07-09

申请号：US18195802

申请日：2023-05-10

Applicant: Silicon Laboratories Inc.

Inventor： Partha Sarathy Murali ,  Ajay Mantha ,  Nagaraj Reddy Anakala ,  Subba Reddy Kallam ,  Venkat Mattela

IPC: H04L12/12 ,  H04W4/80 ,  H04W84/12 ,  H04W84/18

CPC classification number: H04L12/12 ,  H04W4/80 ,  H04W84/12 ,  H04W84/18

Abstract: A mesh receiver has a wakeup receiver for reception of a wakeup sequence formed by keyed RF or a sequence of wireless packets and gaps, a transmitter forming low speed RF wakeup sequence to other mesh stations, a mesh receiver for reception of high speed WLAN packets, the transmitter sending a wireless ACK packet in response to a wakeup sequence, the mesh receiver thereafter receiving wireless packets from a remote station, the mesh transmitter sending an ACK, the mesh station thereafter identifying a next hop station, and sending a wakeup sequence to that station, after receipt of an ACK, sending the data, the mesh receiver and mesh transmitter thereafter going to sleep.

公开(公告)号：US11665008B2

公开(公告)日：2023-05-30

申请号：US17692027

申请日：2022-03-10

Applicant: Silicon Laboratories Inc.

Inventor： Partha Sarathy Murali ,  Ajay Mantha ,  Nagaraj Reddy Anakala ,  Subba Reddy Kallam ,  Venkat Mattela

IPC: H04L12/12 ,  H04W84/12 ,  H04W4/80 ,  H04W84/18

CPC classification number: H04L12/12 ,  H04W4/80 ,  H04W84/12 ,  H04W84/18

Abstract: A mesh receiver has a wakeup receiver for reception of a wakeup sequence formed by keyed RF or a sequence of wireless packets and gaps, a transmitter forming low speed RF wakeup sequence to other mesh stations, a mesh receiver for reception of high speed WLAN packets, the transmitter sending a wireless ACK packet in response to a wakeup sequence, the mesh receiver thereafter receiving wireless packets from a remote station, the mesh transmitter sending an ACK, the mesh station thereafter identifying a next hop station, and sending a wakeup sequence to that station, after receipt of an ACK, sending the data, the mesh receiver and mesh transmitter thereafter going to sleep.

公开(公告)号：US10757652B2

公开(公告)日：2020-08-25

申请号：US16221325

申请日：2018-12-14

Applicant: Silicon Laboratories Inc.

Inventor： Sriram Mudulodu ,  Partha Sarathy Murali ,  SuryaNarayana Varma Nallaparaju ,  Logeshwaran Vijayan ,  Subba Reddy Kallam ,  Venkat Mattela

IPC: H04W52/02 ,  H04B1/16 ,  H04W40/24 ,  H04W84/12

Abstract: A wireless receiver powers up shortly before the expected arrival of a beacon frame, and upon detection of a beacon frame from an access point the station is associated with and determination of subsequent fields of interest, including at least a TIM field, the receiver powers down. At the previously identified fields of interest, the receiver powers up and uses previously stored values to continue packet demodulation, thereafter examining the TIM field to determine whether the AP has packets to transmit to the station.

公开(公告)号：US11537190B2

公开(公告)日：2022-12-27

申请号：US17006813

申请日：2020-08-29

Applicant: Silicon Laboratories Inc.

Inventor： Partha Sarathy Murali ,  Subba Reddy Kallam ,  Venkat Mattela

IPC: G06F1/32 ,  G06F1/3228 ,  G06F1/3234 ,  G06F9/54 ,  H04W4/12 ,  H04W4/80 ,  G06F9/445 ,  H04B1/00 ,  H04B1/04 ,  H04L51/58 ,  H04L101/622 ,  G06F1/3203

Abstract: A task processor has a low power connectivity processor and a high performance applications processor. Software processes have a component operative on a connectivity processor and a component operative on an applications processor. The low power connectivity processor is coupled to a low power front end for wireless packets and the high performance applications processor is coupled to a high performance front end. A power controller is coupled to the low power front end and enables the applications processor and high performance front end when wireless packets which require greater processing capacity are received, and removes power from the applications processor and high performance front end at other times.

公开(公告)号：US11310063B2

公开(公告)日：2022-04-19

申请号：US16918342

申请日：2020-07-01

Applicant: Silicon Laboratories Inc.

Inventor： Partha Sarathy Murali ,  Ajay Mantha ,  Nagaraj Reddy Anakala ,  Subba Reddy Kallam ,  Venkat Mattela

IPC: H04L12/12 ,  H04W84/12 ,  H04W4/80 ,  H04W84/18

Abstract: A mesh receiver has a wakeup receiver for reception of a wakeup sequence formed by keyed RF or a sequence of wireless packets and gaps, a transmitter forming low speed RF wakeup sequence to other mesh stations, a mesh receiver for reception of high speed WLAN packets, the transmitter sending a wireless ACK packet in response to a wakeup sequence, the mesh receiver thereafter receiving wireless packets from a remote station, the mesh transmitter sending an ACK, the mesh station thereafter identifying a next hop station, and sending a wakeup sequence to that station, after receipt of an ACK, sending the data, the mesh receiver and mesh transmitter thereafter going to sleep.

公开(公告)号：US10820270B2

公开(公告)日：2020-10-27

申请号：US16365133

申请日：2019-03-26

Applicant: Silicon Laboratories Inc.

Inventor： Partha Sarathy Murali

IPC: G08C17/00 ,  H04W52/02 ,  H04L1/00

Abstract: A wireless receiver has a preamble detection apparatus and method which waits until the expected arrival of a beacon frame, after which power is cyclically applied during a preamble detection interval and a sleep interval until a preamble is detected. The preamble detector has a first mode with a longer preamble detection interval and a second mode with a shorter preamble detection interval. During the preamble detection interval, power is applied to receiver components, and during the sleep interval, power is not applied. The duration of the preamble detection interval is equal to a preamble sensing interval, and if a preamble is detected, power remains applied to a preamble processor for a preamble processing interval. The duration of the sleep interval is the duration of a long preamble less the sum of two times the preamble detection interval plus the preamble processing interval. Phase lock loop (PLL) power is applied a PLL settling time prior to and during the preamble detection interval.