Microsoft Technology Licensing, LLC

Arvind M Murching

Joseph M Joy

Mukund Sankaranarayan

Mitesh K Desai

Arunkumar Navasivasakthivelsamy

Dattatraya B Rajpure

Henrique M A Filgueiras

Abhinav Gupta

Manoj Kumar Miryala

Alireza Dabagh

Jameel Hyder

Rajesh Sundaram

Abolade Gbadegesin

Georgios Chrysanthakopoulos

Henry L Sanders

James George Cavalaris

Adam Joseph Lenart

Aditya Dube

Lawrence Ralph Cleeton

Kenneth D Ray

David G Thaler

Vadim Eydelman

William Michael Zintel

Sanjay N Kaniyar

Nk Srinivas

Shivakumar Seetharaman

Stanley William Adermann

Bhupinder Singh Sethi

Paul G Mayfield

Anish Desai

Louis J Giliberto

Mark D Bertoglio

Fengfen Liu

Narendra C Gidwani

Husni Roukbi

George V Reilly

Eric B Stenson

N K Srinivas

Doran J Holan

Charles Lawrence Wickham, Iii

Aspects of the disclosure provide a system having a memory area associated with a computing device and a processor. The processor executes to classify device panel descriptors and location descriptors according to associated device instances. The processor generates device panel objects using the classified device panel descriptors and location descriptors. A schema comprising device panel locations and adjacency relationship information is populated for the computing device based on the generated device panel objects. The processor provides the populated schema as dynamic device properties to one or more operations executing on the computing device.

Device panel capabilities and spatial relationships

Techniques for monitoring presence of a remote device at Layer 2 that allow reducing power consumption without compromising the device's availability. A device that pairs with a remote wireless device may establish a Layer 3 connection, such as an IP connection, to the remote device to provide services to a user. The Layer 3 connection may be formed over a Layer 2 connection via an access point or as a peer-to-peer wireless connection between the devices. When the Layer 3 connection is not actively used to access the remote device, the Layer 3 connection and the supporting Layer 2 connection (e.g., WI-FI, WI-FI DIRECT&#x2122; or BLUETOOTH&#xae;) may be terminated and presence of the remote device may be monitored using a Layer 2 device discovery mechanism. The Layer 2 and Layer 3 connections to the device may be reestablished when use of the remote device is desired.

Detecting device presence for a layer 3 connection using layer 2 discovery information

A unified architecture for enabling remote access to a network is provided. The network may comprise, as examples, a virtual private network (VPN) and/or a peer-to-peer network. In one embodiment, the architecture includes components installed on a client device/node and a gateway/supernode. Components implemented on the client device may facilitate access in a manner similar to that of a traditional VPN, while components on the gateway may facilitate access in a manner similar to an application proxy. Communication between the client device and gateway may occur, as an example, via a Secure Sockets Layer (SSL) communication protocol.

Unified architecture for remote network access

A method for providing an interface to a Bluetooth compliant device can emulate a modem such that computer software programs can communicate through the Bluetooth compliant device in the same manner in which they would communicate through a standard modem to access a dial-up, wide area network. The method also supports an interface to a Bluetooth compliant device which can emulate a network socket such that computer software programs can communicate through the Bluetooth compliant device seemingly in the same manner in which they would communicate through a standard network interface card to access a local area network. The method also allows for the interface to a Bluetooth compliant device to be dependent on the nature of the Bluetooth compliant device.

Exposing bluetooth compliant wireless device connection as modems or sockets

Applications can transparently use a bus, such as the IEEE-1394 serial bus, as if it were an Ethernet (IEEE 802.3). In a conventional Ethernet, each node is assigned a unique 6-byte MAC address in order to receive frames addressed to it over the LAN. According to the invention, IEEE-1394 bus node identifiers are mapped to Ethernet MAC addresses using for example a digital signature algorithm. Ethernet frames are then 'wrapped' into 1394 bus packets and addressed to the destination node using the hashed address. The receiver unwraps the 1394 packet and restores the Ethernet frame to its original form. An optimum packet size for transmission of Ethernet packets over the 1394 bus is selected with reference to speed topology maps in the 1394 bus nodes, and this optimum size is transmitted to bus nodes. This packet size is reported to TCP to specify the packet size, and all packets larger than that size are fragmented and reassembled at the receiving node. The protocol works transparently across networks that are linked via bridges.

Method and apparatus for emulating ethernet functionality over a serial bus

A new method and framework for scheduling receive-side processing of data streams received from a remote requesting client by a multiprocessor system computer is disclosed. The method receives data packets from the remote requesting client via a network and, for each data packet, applies a mapping algorithm to portions of the received data packet yielding a mapping value. The method further applies the map value to a processor selection policy to identify a processor in the multiprocessor system as a selected processor to perform receive-side processing of the data packet. The method queues the received data packet for processing by the selected processor and invokes a procedure call to initiate processing of the data packet.

Symmetrical multiprocessing in multiprocessor systems

Filtering data packets in a manner that promotes efficient flow of data through a communication path. A filter stack includes one or more filter instances that may filter data packets that pass through the filter stack. The filter stack is associated with one or more protocol stacks that function in communication paths between a computing device and a network. When filtering instances are inserted to or removed from a filter stack, associated protocol stacks may remain capable of transferring data. An abstract interface facilitates inserting and removing filter instances by passing data to filter drivers that create filter instances. A filter driver may create multiple filter instances. Filtering operations associated with filter instances may be bypassed based on the direction of data flow, control flow, and characteristics of packets.

Architecture and run-time environment for network filter drivers

A namespace management module utilizes a persistent reservation store that associates URI namespaces with one or more permissions. The reservation store can contain a number of reservation entries that each include a URI identifying a URI namespace and a corresponding Access Control List ('ACLs') that includes permissions for the identified URI namespace. When a request to register a URI namespace is received, the permissions of an appropriate ACL can be checked to determine if the registration is approved. When a resource request is received, permissions of the ACLs can also be checked to determine if the resource request should be routed to a registered process. Preemptive wildcards can be included in aggregated URIs to identify aggregated URI namespaces. Aggregated URIs can be included in registration requests to override the registration of unauthorized processes.

Securing uniform resource identifier namespaces

The invention provides quality-of-service (QoS) delivery services over a computer bus having isochronous data transfer capabilities. A transmitting node on the bus transmits a message to an intended recipient indicating a requested bandwidth for a connection. If the intended recipient has sufficient resources, it allocates an isochronous data channel on the bus and notifies the transmitter of the allocated channel. Thereafter, the transmitter transmits the data on the allocated channel. If the recipient cannot allocate a channel, it does not respond, and the transmitter thereafter detects a time-out condition and begins transmitting using a 'best efforts' scheme (i.e., non-guaranteed time delivery). In a second variation, a receiving node detects that it is receiving large quantities of data from a transmitting node. In response, the receiving node allocates an isochronous data channel on the bus and notifies the transmitter of the allocated channel. Thereafter, the transmitter transmits using the allocated isochronous channel. In a third variation, multiple receiving nodes that need to receive streaming data from a single transmitting node share a common isochronous data channel. In any of these variations, each receiver can periodically transmit a 'deadman' timer message on a broadcast channel to indicate that it is still receiving on a given channel. If a transmitter detects that the deadman timer has expired, it reverts to transmitting data using a &#x201c;best-efforts&#x201d; scheme. A transmitter can transmit both to receivers that can handle QoS services and those that cannot explicitly support QoS services.

Method and apparatus for providing quality-of-service delivery facilities over a bus

The invention allows applications to transparently use a bus, such as the IEEE-1394 serial bus, as if it were an Ethernet (IEEE 802.3). In a conventional Ethernet, each node is assigned a unique 6-byte MAC address in order to receive frames addressed to it over the LAN. According to the invention, IEEE-1394 bus node identifiers are mapped to Ethernet MAC addresses using for example a digital signature algorithm. Ethernet frames are then 'wrapped' into 1394 bus packets and addressed to the destination node using the hashed address. The receiver unwraps the 1394 packet and restores the Ethernet frame to its original form. An optimum packet size for transmission of Ethernet packets over the 1394 bus is selected with reference to speed topology maps in the 1394 bus nodes, and this optimum size is transmitted to bus nodes. This packet size is reported to TCP to specify the packet size, and all packets larger than that size are fragmented and reassembled at the receiving node. The protocol works transparently across networks that are linked via bridges.

Growing community of inventors

Sammamish, WA, United States of America

Arvind M Murching