Marvell International Limited

Cypress Semiconductor Corporation

Robert Mack

Gladys Yuen Yan Wong

Deepak Jain

Li-Fu Jeng

Ronak Anjan Chokshi

Kapil Chhabra

Lawrence Tse

Milind Kopikare

Yungping Hsu

Poh Boon Leong

Zhenyu Zhang

Yui Lin

Todd Wheeler

Stephen O'Connor

Timothy Chen

Minko Tsai

Ken Kinwah Ho

David Gordon Wright

Timothy J Donovan

Sameer Bidichandani

Shuangqing Yuan

Neeta Srivastav

Peter G Vavaroutsos

Ham Prince

Deepack Jain

Myung Cheol Kim

Jigang Chen

In response to determining that a Bluetooth inquiry phase or the Bluetooth paging phase will begin, a power save indicator signal is sent from a first communication device to a second communication device prior to a start of the Bluetooth inquiry phase or the Bluetooth paging phase. A gap between a first Bluetooth communication slot and a second Bluetooth communication slot is determined, and a time period within the gap is determined, where an end of the time period occurs at a defined amount of time prior to a start of the second Bluetooth communication slot. During the time period, one or more power save poll messages are sent from the first communication device to the second communication device, each first power save poll message prompting the second communication device to transmit a respective first WLAN packet to the first communication device.

Method and apparatus for maintaining a wireless local area network connection during a bluetooth inquiry phase or a bluetooth paging phase

An example embodiment includes an apparatus. The apparatus includes piconet logic for establishing a multi-level piconet hierarchy having a top level piconet and a lower level piconet(s). The top level piconet includes a master device and master controller(s). The lower level piconet includes master controllers(s) and sub-controller(s). The apparatus includes time division multiplexing logic to solicit and control aggregated communication with master controllers. The aggregated communication comprises data from the master controller and data from a sub-controller(s).

Multi-level piconet data aggregation

A method for compensating NCO jitter by changing a step value used to increment an accumulator in the NCO to make up for inaccuracies, or jitters. In one approach, a remainder in the accumulator may be monitored and a compensated clock close to the current edge of an ideal clock may be generated. In another approach, a compensated clock close to the next edge of the ideal clock may be generated after the current edge of the ideal clock is missed. The step value may be stored in a memory, which may be a register. A jitter compensator may include a comparator for monitoring the remainder in the accumulator or a detector for detecting whether an ideal clock has been missed. The jitter compensator may also change the step value to a step value for a faster clock to compensate jitter.

Jitter compensated numerically controlled oscillator

The present specification describes techniques for packet exchange arbitration. In some embodiments, a request is maintained to an arbiter at least until a packet exchange has been communicated and/or at least until a time-sensitive packet is communicated. In some other embodiments, a grant of a request is delayed at least until the communication of an isochronous packet.

Packet exchange arbitration for coexisting radios

In response to determining that a Bluetooth inquiry phase or a Bluetooth paging phase is beginning, a power save (PS) mode signal is sent from a first device to a second device via a wireless local area network (WLAN) communication link, wherein the PS mode signal indicates that the first device is in a WLAN PS mode. A PS poll signal is sent from the first device to the second device via the WLAN communication link in a gap between Bluetooth inquiry phase message transmissions during the Bluetooth inquiry phase or between Bluetooth paging phase message transmissions during the Bluetooth paging phase.

Method and apparatus for maintaining a wireless local area network connection during a Bluetooth inquiry phase or a Bluetooth paging phase

Different scan modes are provided for Bluetooth devices. In at least some embodiments, a narrowband scanning mode looks for signal energy on individual transmission frequencies at a time. By looking for signal energy rather than decoding transmitted packets, at least some of the components in a Bluetooth device can remain in an idle or rest state. A midband scanning mode looks for signal energy across multiple different frequencies at a time. Again, by looking for signal energy across multiple different frequencies rather than decoding transmitted packets, at least some of the components in a Bluetooth device can remain in an idle or rest state. A wideband scanning mode looks for signal energies across all relevant frequencies at a time. At least some embodiments enable a Bluetooth device to switch between scanning modes.

Bluetooth wideband scan mode

An apparatus has first and second wireless communication modules with respective first and second wireless communication signaling terminals. An arbiter is coupled to receive a request for access to an antenna from one of the first and second wireless communication modules. The arbiter is operable to cause the antenna to be coupled to one of the first and second wireless communication signaling terminals in response to the request, and a coexistence module is operable to prevent the arbiter from receiving a request from the second wireless communication module to thereby allow a communication of the first wireless communication module.

Apparatus and method for coexistent wireless and bluetooth communication employing interruption of arbitration requests to allocate use of a shared antenna

Bluetooth scan modes

Devices, systems, methods, and other embodiments associated with reducing interference between wireless networks are described. In one embodiment, an apparatus includes negotiation logic implemented in at least hardware configured for determining a quiet interval between a first device and a second device, where the first device and the second device communicate wirelessly via a first network according to a first wireless protocol and are within a wireless area of a second network that communicates with a second wireless protocol. Control logic implemented in at least hardware is configured for controlling wireless transmission of data from at least the first device on the first network by prohibiting transmissions from the first device during the quiet interval.

Reducing interference between wireless networks

A spread spectrum slip time encoding scheme encodes data values with one or more Pseudo Noise (PN) codes and generates a corresponding PN encoded data stream. Other data values are encoded into the PN encoded data stream by varying a slip time between the 10 encoded data values.

Encoding scheme for data transfer

An example embodiment includes an apparatus. The apparatus includes piconet logic for establishing a multi-level piconet hierarchy having a top level piconet and a lower level piconet(s). The top level piconet includes the apparatus and a master controller(s). The apparatus is a master device in the top level piconet. Master controllers are slave devices in the top level piconet. A lower level piconet includes a master controller and a sub-controller(s). Master controllers are masters in the lower level piconet. Sub-controllers are slave devices in the lower level piconet. The apparatus includes time division multiplexing logic to solicit and control aggregated communication with master controllers. The aggregated communication comprises data from the master controller and data from a sub-controller(s). The apparatus includes de-aggregation logic to receive the aggregated communication and to separate data.

Growing community of inventors

San Jose, CA, United States of America

Robert Mack