Qualcomm Incorporated

Google Inc.

Arunkumar Jayaraman

Sandip HomChaudhuri

James Simon Cho

Michael J Hart

Guido Robert Frederiks

Peter Paul Gelbman

Nitin Ashok Changlani

Rajkumar Samuel

Alireza Raissinia

Shu Du

Srinivasa Kumar Duvvuri

Pradeep Baliganapalli Nagaraju

Badrisrinivasan Sampathkumar

Jibing Wang

Paul J Husted

Ashish Kumar Shukla

Zhanfeng Jia

Anand Rajagopalan

Srenik Suresh Mehta

Joseph Duncan

Xiaoru Zhang

Yi Zhu

MeeLan Lee

Sumeet Kumar

Matthew Daniel Smith

Lian Chen

Derrick Chu Lin

Fnu Rajkumar Samuel

Vipin Kumar Mehta

Sandip Homchaudhuri

Jason Alexander Young

Rajkumar Rajkumar Samuel

Chandramouli Ganapathy

Richard G Bahr

Peter Gelbman

Michael John Hart

Meelan Lee

Nitin A Changlani

Badri Srinivasan Sampathkumar

In a network including a plurality of network nodes interconnected via a plurality of primary links and a controller in communication with the plurality of network nodes, the controller is configured to provide an event profile to the plurality of network nodes, the event profile indicating routing changes to be implemented in a variety of link loss scenarios. Each of the plurality of nodes is configured to determine that a particular link loss event occurred, determine, based on the event profile, routing changes for the particular link loss event, and implement the determined routing changes.

System and method for handling link loss in a network

A method includes receiving one or more node connections from a mesh network external to the data processing hardware. The mesh network includes a network of nodes each operative to transmit and/or receive directional beams containing packets of data. The method also includes identifying a route within the mesh network for providing a data packet from a source to a destination and determining schedule information associated with the identified route, the schedule information coordinating wireless communication between at least a first node and a second node along the route to transfer the data packet. The method also includes providing the schedule information to the first node and the second node.

Constructing a self-organizing mesh network using 802.11AD technology

Methods, systems, and apparatus, including computer programs encoded on computer storage media, for maintaining, by a cloud controller, data representing a topology of a network of nodes; receiving, at the cloud controller from the first group of nodes, one or more requests to connect to the network; selecting, by the cloud controller, a first node in the first group of nodes that sent the request; and generating, by the cloud controller, instructions configured to cause the first node to communicate a timestamp of the first node to each neighboring node of the first node and to cause each neighboring node to communicate the timestamp of the first node to each other neighboring nodes of the neighboring node; and sending the instructions to the first node, thereby synchronizing the nodes in the network to the timestamp of the first node.

System for network discovery and synchronization

Methods and apparatuses are described in which dynamic voltage and frequency scaling may be used to save power when processing packets in a wireless communications device. In some cases, inframe detection may allow the device to determine whether to transition from a first (e.g., lower) voltage level to a second (e.g., higher) voltage level to process one or more packets of a received frame. For some packet types the first voltage level may be maintained. In other cases, the device may determine a bandwidth to use from among multiple bandwidths supported by the device. The bandwidth may be determined based on channel conditions. A voltage level may be identified that corresponds to the determined bandwidth and a processing voltage may be scaled to the identified voltage level. The device may be configured to operate in wireless local area network (WLAN) and/or in a cellular network (e.g., LTE).

Dynamic voltage and frequency scaling in wireless modems

Methods, systems, and devices are described for adapting blind reception duration for range and congestion. A wireless station may measure channel conditions (e.g., range to an access point (AP) and channel congestion), and adjust one or more sleep timers based on the conditions. The sleep timers may each be associated with a window for reception of an expected transmission. If the transmission is not received in the window, the station may enter a sleep state to conserve power. In one example, a beacon miss timer is adjusted, and the expected wireless transmission is a delivery traffic indication message (DTIM). In another example, a content after beacon (CAB) timer is adjusted and the expected wireless transmission is the CAB. In some cases, the station may measure a delay for a number of beacons and determine the adjustment based on the delays.

Adapting blind reception duration for range and congestion

Methods, systems, and devices are described for establishing a virtual communication link including at least a first and second physical link between two devices. A single virtual packet queue of a device may receive one or more data packets to be transmitted via the virtual communication link. The single virtual packet queue may attach a virtual sequence number to each of the one or more data packets and send the one or more data packets to one or more of the first or the second physical link according to the assigned virtual sequence numbers. The one or more packets may then be communicated via the first and/or second physical links according to link specific sequence numbers, such as medium access control (MAC) sequence numbers, assigned to the one or more data packets by the first and/or second physical links.

Link aggregation in wireless local area networks

Methods and apparatuses are described for wireless communications coexistence. In one aspect, a first device may detect an interference produced by a second device co-located with the first device. The first device may communicate with an access point (AP) using a free or open band and the second device may communicate with a cellular network (e.g., LTE network). In response to the detected interference, a message may be transmitted to the AP from the first device with information for the AP to determine whether to switch to a different channel in the open band to communicate with the first device. The AP may receive such a message from each terminal in at least a subset of associated terminals. The AP may determine, from the messages received, to switch to the different channel in the open band and may transmit a message to the associated terminals indicating the switch.

Reverse channel switch request from stations to access points for LTE/Wi-Fi coexistence

Methods, systems, and devices are described for power conservation in a wireless communications system through efficient transmissions and acknowledgements of information between an AP and a station. The time between a determination by a station to enter a power saving mode and entering network sleep mode by the station may be reduced through a transmission, by an AP, of an MPDU to the station successive to an SIFS after transmission of an acknowledgement to the station of a PS-Poll frame from the station. The time to enter a power saving mode by a station may also be reduced through transmission of A-MPDUs in which a last MPDU of the A-MPDU has an indicator bit cleared to indicate no additional data is to be transmitted. An AP may prevent a retransmission of an MPDU to the station in the absence of an acknowledgement from the station, to further enhance efficiency.

Access point response to PS-Poll

Systems and methods are provided for enhancing the concurrency of a wireless device operating in multiple network contexts. By identifying opportunity instants that may exist within the normal exchange of information by a device having a single physical transceiver in a first network context, tasks for a second network context may be performed using the transceiver with minimal impact on performance related to the first network context and preferably in complete transparence to the first network context.

Methods and a system of multiplexing multiple concurrent operational modes on a single physical transceiver by opportunistic time stealing

Power saving for wireless communication devices by adjusting the amount of time, after a last transmission/reception of data, that the device remains in an awake mode listening for more data before the device enters a sleep mode. This time period may be referred to as inactivity time interval or inactivity timeout (ITO). The described features may be employed to improve power savings by taking metrics of channel congestion into account for determining the ITO. The appropriate ITO may be determined to be commensurate with ongoing transmission and/or reception activity. Because error may occur in estimating channel congestion and/or transmission/reception activity, latency bounds based on estimation errors may be managed by classifying the operational mode into multiple regions and employing techniques for mitigating error in congestion estimation based at least in part on the operational mode.

Power saving with adaptive inactivity time out

A method and apparatus are disclosed for increasing the speed with which a number of stations associated with an IBSS network may be synchronized and/or for reducing the number of beacon frame collisions in the IBSS network. For at least some embodiments, the synchronization speed may be increased by allowing STAs having faster clock speeds to broadcast beacon frames more frequently than STAs having slower clock speeds.

Beacon frame scheduling in an independent basic service set network

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San Jose, CA, United States of America

Arunkumar Jayaraman