| Patent application number | Description | Published |
|---|
| 20080298390 | Transmission resource reservation management in wireless network - A flexible transmission resource reservation scheme and data transmission scheme is provided for a wireless network. A source node transmits a data transfer reservation request for a transmission resource to at least one neighboring node including at least one target node of the wireless network. The source node may have data to be transmitted or may anticipate data reception from at least one of the target nodes. Then, the source node receives from the at least one neighboring node an acknowledgment to reserve the requested transmission resource for data transfer between the source node and the at least one target node. Thereafter, data is transferred between the source node and the at least one target node within the reserved transmission resource. | 12-04-2008 |
| 20090097428 | Apparatus, method, and computer program product providing improved power management in wireless networks - There are a plurality of power saving modes for a device in a wireless network. It is determined that the device is using one of the power saving modes on a peer-specific link, a state is set to indicate that the device is using that specific power saving mode, and a message is transmitted to the peer over the link that includes an indication of the state. There may also be a power management indication that indicates whether a full power state is in use of one of the power saving modes are in use. Exemplary power saving modes are light sleep and deep sleep. A method, apparatus, and computer readable medium are detailed, and exemplary environments may be practices in or by a WLAN mesh point. | 04-16-2009 |
| 20090097438 | SYSTEM AND METHOD FOR TRANSMISSIONS IN POWER SAVE MODE - System and method for power saving transmission in a wireless communications networks. In one embodiment, a communications device includes a transceiver configured to transmit or receive frames over a peer communications link to or from another communications device in a wireless communications network. The communications device also includes a controller configured to initiate a service period for transmission of data frames to the another communications device. The controller is also configured to terminate the service period following an acknowledgement to a transmission of a last data frame therein addressed to either the communications device or the another communications device. | 04-16-2009 |
| 20090097443 | Hierarchical Network Operating Mode in a Wireless Communications Network - A system and method for a hierarchical network operating mode in an ad hoc wireless communications network. In one embodiment, a communications node includes a controller and a transceiver. The controller is configured to create a bandwidth allocation request for other communications nodes in an ad hoc wireless communications network. The transceiver is configured to receive request grants from the other communications nodes granting the bandwidth allocations in accordance with the bandwidth allocation request, thereby establishing a hierarchical network operating mode in at least a portion of the ad hoc wireless communications network. | 04-16-2009 |
| 20090109916 | METHOD AND APPARATUS FOR PROVIDING A SHARED RESERVATION ACKNOWLEDGEMENT CHANNEL - An approach is provided for resource allocation within a network. A request is generated for resource allocation from a neighboring node within a network. The request is inserted in a beaconing subframe of a transmission frame. The transmission frame includes a reservation subframe that provides acknowledgement signaling relating to a grant of the resource allocation. | 04-30-2009 |
| 20090232042 | Wireless network including post groupcast time - In one aspect thereof the invention provides a method that includes transmitting from a first (beaconing) mesh point at least one multicast or broadcast frame; and transitioning the first mesh point to a lower power mode of operation state after expiration of a specified post groupcast time from a last multicast or broadcast frame that was transmitted by the beaconing mesh point after expiration of an awake window, or when the awake window expires, whichever occurs later. In another aspect thereof the invention provides a method that includes operating a peer mesh point in an awake state; and maintaining the peer mesh point in the awake state for no more than a specified post groupcast time after a last target beacon transmission time, or a last received beacon frame, or a receipt of multicast or broadcast frame having an indication that another multicast or broadcast frame will be transmitted. A computer-readable medium storing program instructions to implement the methods is also disclosed, as are corresponding apparatus. | 09-17-2009 |
| 20090268652 | Power management mode aware mesh beacon collision avoidance and information update mechanism - Apparatus, methods and computer program products provide power management mode aware mesh beacon collision avoidance and information update mechanisms at a first mesh point in a wireless mesh network. The information update mechanism operates by detecting that a timing-related beacon transmission parameter of the first mesh point has changed; generating a message containing updated timing-related beacon transmission parameter information for the first mesh point; determining when a second mesh point operating in a power saving mode will transition to an awake state; and transmitting the message containing the updated timing-related beacon transmission information during a time corresponding to the awake state of the second mesh point. | 10-29-2009 |
| 20090279449 | Quality of service and power aware forwarding rules for mesh points in wireless mesh networks - Apparatus, methods and computer program products provide quality of service and power aware forwarding rules for mesh points in wireless mesh networks by monitoring frame flow to and from a first mesh point in the wireless mesh network; and in dependence on the monitored frame flow, setting a power management mode of the first mesh point. The first mesh point monitors, for example, the power save mode and mesh deterministic access status of peer modes and selects power save and frame transmission modes in dependence on the monitored information. | 11-12-2009 |
| 20100008274 | POWER SAVE ENHANCEMENTS FOR WIRELESS COMMUNICATION DEVICES - Method, apparatus, and computer program product embodiments are disclosed to enable power save modes of operation between wireless devices for direct data transfer in an infrastructure basic service set. The embodiments are an enhancement to the peer U-APSD power save mechanism. The embodiments provide additional operation for peer U-APSD mechanism with two stations operating in power save mode. | 01-14-2010 |
| 20100165875 | AD HOC NETWORK INITIATION - Method, apparatus, and computer program product embodiments are disclosed to improve network performance for ad hoc network initiation. Example embodiments include a new operational sequence for wireless devices initiating the use of an ad hoc network. The example embodiments require appropriately enabled wireless devices to only respond to probe request frames from other similarly appropriately enabled wireless devices. In this manner, two devices may avoid the time consuming effort of combining two different ad hoc networks into a single ad hoc network so that the two devices can communicate. | 07-01-2010 |
| 20100177712 | MULTICHANNEL/MULTIBAND OPERATION FOR WIRELESS DEVICE TO DEVICE COMMUNICATION - Method, apparatus, and computer program product embodiments are disclosed to improve the channel switching in communication protocols, by simplifying transmission of only a single, acknowledged switching message to trigger off channel—or base channel switching after an initial off channel configuration and set-up of the direct link. The single message off channel switching indication in direct link is based on two specific timeout timers that serve as a basis for channel switching between the devices in TDLS direct link. An immediate fallback transition is provided to the base channel in the event that the communication in the off-channel does not succeed. The timeouts in the fallback procedure allow continuing the planned data transfer immediately in the base channel of the TDLS direct link if the switching to the off channel has not succeeded. | 07-15-2010 |
| 20100198952 | Method for WALN network and device role activation - In response to receiving a capability advertisement message which comprises role capabilities, an activation message which requests at least one role capability of the capability is sent to a device on a bearer; and in response to the activation message, from the device on the bearer is received a notification message which indicates whether the role capability of the activation message was accepted. In another embodiment, a capability advertisement message which comprises role capabilities is sent; in response there is received on a bearer an activation message which requests at least one role capability of the advertisement message; and then in response to the activation message there is sent to the device on the bearer a notification message which indicates whether the role capability of the activation message is accepted. | 08-05-2010 |
| 20110007678 | HIERARCHY FOR GROUP ADDRESSED FRAMES DELIVERY - Method, apparatus, and computer program product embodiments are disclosed to improve power conservation and efficiency in wireless mesh networks. An example embodiment of the invention receives at a wireless mesh device a plurality of messages from other wireless mesh devices in a wireless mesh network and determines from the messages if there is one or more wireless peer mesh device in the network that is in a power save mode. If there is no wireless peer mesh device in the network that is in a power save mode, then the example embodiment transmits group addressed frames in any order. If there is at least one wireless peer mesh device in the network that is in a power save mode, then the example embodiment arranges a transmission order of group addressed frames that have a source different from a designated wireless mesh device in the network followed by group addressed frames that have the designated wireless mesh device as a source. Then the example embodiment transmits the group addressed frames in the transmission order to at least one other wireless mesh device in the network, with the group addressed frames having the designated wireless mesh device as a source being transmitted last. The arrangement of the order of transmission enables other wireless mesh devices operating in power save mode in the network to cease listening for further group addressed frames following receipt of the group addressed frames having the designated wireless mesh device as a source. In this manner power conservation and efficiency are improved in wireless mesh networks. | 01-13-2011 |
| 20110090833 | GROUP ADDRESSED FRAME DELIVERY IN WIRELESS NETWORKS - Method, apparatus, and computer program product embodiments are disclosed to improve power conservation and efficiency in wireless mesh networks, by limiting the number of sources of group addressed frames that a peer mesh station receives. In an example embodiment of the invention, a portal wireless peer mesh device transmits a Portal Announcement frame in a wireless mesh network to create unidirectional paths from wireless mesh devices within the network to the portal. The Portal Announcement frame is relayed from one wireless peer mesh device to another to flood the network. Each wireless peer mesh device that receives the Portal Announcement frame receives the network address of the portal and the network address of the wireless peer mesh device that transmitted the frame to the receiving transmitting device. The receiving device may have received a plurality of Portal Announcement frames from a plurality of transmitting devices. A first, receiving wireless mesh device selects a second, transmitting wireless mesh device of the plurality of transmitting wireless mesh devices to be the sole transmitting source from which the first receiving wireless mesh device will receive group addressed messages. The first wireless mesh device transmits a group delivery notify message to the second wireless peer mesh device informing of the second device of its selection as the sole transmitting source of group addressed messages for the first device. Thereafter, the first wireless mesh device receives only from the second wireless peer mesh device, group addressed messages. | 04-21-2011 |
| 20110122780 | Graceful Wakeup Of Power Saving Communication Apparatuses - An apparatus determines a wireless traffic load; generates at least one timer value based at least in part on the determined traffic load; and initiates a wireless transmission at a time based at least in part on the at least one timer value. The at least one timer value indicates a time for initiating a transmission after changing from a lower power state to a higher power state. In an exemplary embodiment the wireless traffic load is determined via continuous monitoring and initiating the transmission includes obtaining a transmission opportunity for sending a trigger frame or a power save poll frame. Various exemplary techniques are detailed as to how to determine the traffic load. The generated at least one timer value is a maximum time, which may be truncated for example after the apparatus receives a data unit by which to obtain a network allocation vector. | 05-26-2011 |
