Patents by Inventor Jiandong Ruan
Jiandong Ruan has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7969954Abstract: A wireless station is connected to a wireless network through an access point and can establish a direct client-to-client connection to a second wireless station. The wireless station can communicate directly with the second wireless station without involving the access point. The wireless station communicates with the wired network and with other wireless stations through the access point. The second wireless station may have an infrastructure connection to the access point or may be independent.Type: GrantFiled: August 17, 2009Date of Patent: June 28, 2011Assignee: Microsoft CorporationInventors: Abhishek Abhishek, Amer A. Hassan, Thomas W. Kuehnel, Noel W. Anderson, Christian Huitema, Jiandong Ruan, Francis Duong
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Publication number: 20110064012Abstract: A portable media player device is capable of operating in a wireless network. The wireless portable media player device can bootstrap and synchronize with an ad hoc network with low power consumption. Neighbor portable media player devices in an ad hoc network can be discovered by the wireless portable media player device. The portable media player device can establish and terminate connections to neighbor portable media player devices. The portable media player device can transfer data in a high speed data transfer mode or a power save data transfer mode, while concurrently permitting discovery by other devices. The portable media player device operates in a power save mode during an inactive portion of a periodic discovery interval.Type: ApplicationFiled: November 24, 2010Publication date: March 17, 2011Applicant: Microsoft CorporationInventors: Abhishek Abhishek, Hui Shen, Jiandong Ruan, Yasser Asmi, David Proctor
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Patent number: 7860038Abstract: A portable media player device is capable of operating in a wireless network. The wireless portable media player device can bootstrap and synchronize with an ad hoc network with low power consumption. Neighbor portable media player devices in an ad hoc network can be discovered by the wireless portable media player device. The portable media player device can establish and terminate connections to neighbor portable media player devices. The portable media player device can transfer data in a high speed data transfer mode or a power save data transfer mode, while concurrently permitting discovery by other devices. The portable media player device operates in a power save mode during an inactive portion of a periodic discovery interval.Type: GrantFiled: October 3, 2006Date of Patent: December 28, 2010Assignee: Microsoft CorporationInventors: Abhishek Abhishek, Hui Shen, Jiandong Ruan, Yasser Asmi, David Proctor
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Patent number: 7809844Abstract: A method is provided to facilitate compliance with wireless communication regulations for a regulatory domain when creating or joining an ad hoc network. The method can include interacting with a driver of a wireless communication device to facilitate compliance. Another method is provided to offer an option to enable or disable prompting to verify a regulatory domain to use to create or join an ad hoc network. Another method is provided for facilitating compliance with wireless communication regulations for a plurality of regulatory domains. The method includes using a common channel as a communication channel for a wireless communication device when joining or creating an ad hoc network, wherein the common channel is common to the plurality of regulatory domains.Type: GrantFiled: August 15, 2005Date of Patent: October 5, 2010Assignee: Microsoft CorporationInventors: Abhishek Abhishek, Amer A. Hassan, Yi Lu, Vishesh M. Parikh, Thomas Kuehnel, Hui Shen, Jiandong Ruan, Taroon Mandhana
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Publication number: 20100218198Abstract: A standardized 802.11 hardware control interface may be provided such that a driver may communicate with any one or more of a variety of network adapters.Type: ApplicationFiled: April 2, 2010Publication date: August 26, 2010Applicant: Microsoft CorporatonInventors: Jiandong Ruan, Thomas W. Kuehnel
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Patent number: 7716379Abstract: A standardized 802.11 hardware control interface may be provided such that a driver may communicate with any one or more of a variety of network adapters.Type: GrantFiled: April 26, 2007Date of Patent: May 11, 2010Assignee: Microsoft CorporationInventors: Jiandong Ruan, Thomas W. Kuehnel
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Patent number: 7698550Abstract: A software based wireless infrastructure system is provided. The system has a driver that communicates with the network stack and a network interface card (NIC), a station server in communication with the station driver and an 802.1X supplicant or an 802.1X authenticator. Each NIC provides station and/or access point functionality support. The driver drops packets that have been received if the packet has not been authenticated and associated. Packets that have been fragmented or encrypted are unfragmented and decrypted. An association manager is used in conjunction with a configuration table manager to associate stations and access points via management packets. A manager receives 802.1X data packets from the packet processor and sends them up to a station server that communicates with user mode applications and an 802.1X supplicant or an 802.1X authenticator that are used to authenticate and deauthenticate stations and access points. APIs are provided to enable communication between the components.Type: GrantFiled: November 27, 2002Date of Patent: April 13, 2010Assignee: Microsoft CorporationInventors: Abhishek Abhishek, Arun Ayyagari, Hui Shen, Krishna Ganugapati, Jiandong Ruan
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Patent number: 7664465Abstract: Described is a determination of whether interference in a wireless network has achieved a threshold level that adversely impacts communication bandwidth. If so, action is taken to mitigate the effects of the interference and thereby improve the bandwidth. The action that is taken may be in the form of at least one mitigation solution, including mitigating by packet fragmentation, mitigating by changing the wireless network's current operating frequency, mitigating by changing a power level, mitigating by transmit dodging, and/or mitigating by pre-selecting at least one transmission criterion based on an observed pattern. A framework is provided to coordinate mitigation of interference-related problems, and includes an interferer decision mechanism that receives RF interference related-data and evaluates the interference data against a threshold. Mitigation is employed when the threshold is achieved on the current operating frequency.Type: GrantFiled: November 4, 2005Date of Patent: February 16, 2010Assignee: Microsoft CorporationInventors: Hui Shen, Jiandong Ruan, Francis Duong, Victoria Poncini, Poovanpilli G. Madhavan, Abhishek Abhishek
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Publication number: 20090303921Abstract: A wireless device that utilizes a single network interface to simultaneously connect to an infrastructure network and a mesh network. The device has a driver layer with a media access control module for each network type. A multiplexing module and transceiver module within the driver can direct received information associated with one of the networks to an appropriate media access control and then to an appropriate network adapter. For transmitted data, the multiplexing module can receive data from the application layer through an appropriate network adapter and route it to an appropriate media access control module for processing. The processed data can be interleaved by the transceiver for transmission.Type: ApplicationFiled: June 4, 2008Publication date: December 10, 2009Applicant: Microsoft CorporationInventors: Alok Manchanda, Taroon Mandhana, Jiandong Ruan, Saurabh Mahajan, Alireza Dabagh, Thomas W. Kuehnel
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Publication number: 20090303934Abstract: A wireless station is connected to a wireless network through an access point and can establish a direct client-to-client connection to a second wireless station. The wireless station can communicate directly with the second wireless station without involving the access point. The wireless station communicates with the wired network and with other wireless stations through the access point. The second wireless station may have an infrastructure connection to the access point or may be independent.Type: ApplicationFiled: August 17, 2009Publication date: December 10, 2009Applicant: Microsoft CorporationInventors: Abhishek Abhishek, Amer A. Hassan, Thomas W. Kuehnel, Noel W. Anderson, Christian Huitema, Jiandong Ruan, Francis Duong
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Patent number: 7613426Abstract: Discovery of services between devices is provided prior to establishing a connection between devices, including wireless-enabled devices or devices that are communicatively coupled to wireless access points. Discovering services prior to establishing a connection may facilitate finding a desired service. The services that may be discovered may be, for example, print services, camera services, PDA services or any other suitable services. Services may be discovered using 802.11, UWB or any other suitable wireless technology. As one example, particular services may be requested. As another example, services that are provided by a device may be advertised.Type: GrantFiled: December 20, 2005Date of Patent: November 3, 2009Assignee: Microsoft CorporationInventors: Thomas W. Kuehnel, Abhishek Abhishek, Amer A. Hassan, David Jones, Francis Duong, Hui Shen, Jiandong Ruan, Sean O. Lyndersay, Srinivas R. Gatta, Vishesh M. Parikh, Yi Lu
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Patent number: 7577125Abstract: A wireless station is connected to a wireless network through an access point and can establish a direct client-to-client connection to a second wireless station. The wireless station can communicate directly with the second wireless station without involving the access point. The wireless station communicates with the wired network and with other wireless stations through the access point. The second wireless station may have an infrastructure connection to the access point or may be independent.Type: GrantFiled: July 8, 2005Date of Patent: August 18, 2009Assignee: Microsoft CorporationInventors: Abhishek Abhishek, Amer A. Hassan, Thomas W. Kuehnel, Noel W. Anderson, Christian Huitema, Jiandong Ruan, Francis Duong
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Publication number: 20090204725Abstract: A computer system with a software framework for supporting Wi-Fi communications that is used for WiMAX communications in a user friendly way. A Wi-Fi emulation component presents a driver interface to the framework that allows Wi-Fi user interfaces and control functions to operate with a WiMAX network card. Functions of the WiMAX card not supported through the framework may be translated within the emulation component to command objects that are passed by the framework to extensibility components. The extensibility components may be supplied in association with the network interface card. The emulation component also presents an interface to a driver for a WiMAX network interface card in a form that may interface directly with the framework, if the framework is modified to support WiMAX communications.Type: ApplicationFiled: February 13, 2008Publication date: August 13, 2009Applicant: Microsoft CorporationInventors: Hong Liu, Abhishek Abhishek, Peter Bergler, Mohammad Shabbir Alam, Wei Zhao, Jiandong Ruan
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Publication number: 20090175182Abstract: Systems and methods are provided for transmitting data on a wireless network. Some embodiments provide a technique whereby a type is determined for the transmission, at least one metric is determined for the transmission based at least in part on the transmission type and/or an indication of conditions on the channel on which the transmission is to be performed, at least one transmission parameter to be used in performing the transmission is selected to optimize the at least one metric, and the data is transmitted in accordance with the at least one transmission parameter.Type: ApplicationFiled: January 7, 2008Publication date: July 9, 2009Applicant: Microsoft CorporationInventors: Hui Shen, Jiandong Ruan, Kun Tan, Jiansong Zhang, Amer A. Hassan, Bernard D. Aboba, Yi Lu, Tong Zhou
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Patent number: 7555663Abstract: A method and system for managing power consumption in a portable computing device having a network interface module is presented. A power management module receives inputs from other modules and determines when the network interface module is to be put in a doze state for a predetermined number of beacon intervals to conserve power consumption in the network interface module. The network interface module in a device that is associated with a network is put in the doze state after an event has occurred including when a scan has been performed, after a delayed sleep timer has expired, and after a beacon transmission has been completed and no traffic is buffered for the device. The delayed sleep time is set based on the estimated round trip time of a packet.Type: GrantFiled: January 12, 2006Date of Patent: June 30, 2009Assignee: Microsoft CorporationInventors: Anton W. Krantz, Abhishek Abhishek, Arun Ayyagari, Jiandong Ruan, Timothy M. Moore, Avi R. Geiger, Warren V. Barkley
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Patent number: 7529957Abstract: A method and system for managing power consumption in a portable computing device having a network interface module is presented. A power management module receives inputs from other modules and determines when the network interface module is to be put in a doze state for a predetermined number of beacon intervals to conserve power consumption in the network interface module. The network interface module in a device that is associated with a network is put in the doze state after an event has occurred including when a scan has been performed, after a delayed sleep timer has expired, and after a beacon transmission has been completed and no traffic is buffered for the device. The delayed sleep time is set based on the estimated round trip time of a packet.Type: GrantFiled: January 12, 2006Date of Patent: May 5, 2009Assignee: Microsoft CorporationInventors: Anton W. Krantz, Abhishek Abhishek, Arun Ayyagari, Jiandong Ruan, Timothy M. Moore, Avi R. Geiger, Warren V. Barkley
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Patent number: 7506188Abstract: A method and system for managing power consumption in a portable computing device having a network interface module is presented. A power management module receives inputs from other modules and determines when the network interface module is to be put in a doze state for a predetermined number of beacon intervals to conserve power consumption in the network interface module. The network interface module in a device that is associated with a network is put in the doze state after an event has occurred including when a scan has been performed, after a delayed sleep timer has expired, and after a beacon transmission has been completed and no traffic is buffered for the device. The delayed sleep time is set based on the estimated round trip time of a packet.Type: GrantFiled: January 30, 2007Date of Patent: March 17, 2009Assignee: Microsoft CorporationInventors: Anton W. Krantz, Abhishek Abhishek, Arun Ayyagari, Jiandong Ruan, Timothy M. Moore, Avi R. Geiger, Warren Vincent Barkley
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Publication number: 20090031046Abstract: A standardized 802.11 hardware control interface may be provided such that a driver may communicate with any one or more of a variety of network adapters.Type: ApplicationFiled: July 27, 2007Publication date: January 29, 2009Applicant: Microsoft CorporationInventors: Jiandong Ruan, Thomas W. Kuehnel
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Patent number: 7483995Abstract: Systems and methods for handling a transition of a roaming mobile user device (i.e., a roaming client) from one access point (AP) to a target AP, referred to herein as soft inter-AP handoff. This technique involves a second mobile user device that is already connected with the target AP, called a roaming coordinator, assisting in handoff coordination between the APs. This coordination includes assisting the roaming client in establishing a client-to-client connection to relay data traffic during the handoff, while the roaming client establishes a connection with the target AP using traditional techniques. Soft inter-AP handoff allows a faster hand-off between APs than traditional techniques, and may reduce jitter in communications with the roaming device during the transition.Type: GrantFiled: July 11, 2006Date of Patent: January 27, 2009Assignee: Microsoft CorporationInventors: Abhishek Abhishek, Yue Chen, Hui Shen, Jiandong Ruan, Taroon Mandhana, Yi Lu
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Patent number: 7483412Abstract: A mechanism is provided to extend the range of wireless devices beyond the range limit that results from timing restrictions imposed by the IEEE 802.11 standard. The mechanism, which operates at the upper level of the 802.11 MAC, determines whether the wireless devices are far apart or not far apart. When the wireless devices are determined to be far apart, the standard retransmission protocol at the lower level of the 802.11 MAC is disabled and a custom ACK packet is utilized. Delivery of a transmitted packet is confirmed if the custom ACK packet is received within a maximum delay period that takes into account the longer propagation delay between wireless devices that are far apart.Type: GrantFiled: July 29, 2005Date of Patent: January 27, 2009Assignee: Microsoft CorporationInventors: Abhishek Abhishek, Amer A. Hassan, Christian Huitema, Jiandong Ruan, Poovanpilli G. Madhavan