Patents by Inventor Sayantan Choudhury
Sayantan Choudhury 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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Publication number: 20160029412Abstract: Methods and apparatus, including computer program products, are provided for sensing and/or transmission coverage adaptation using interference information. In one aspect there is provided a method. The method may include determining, at a node, a degree of interference at the node; receiving, at the node, at least one message from at least one neighboring node, the at least one message including another degree of interference observed at the at least one neighboring node; and adjusting, by the node based on the degree of interference at the node and the at least another degree of interference, at least one of a receiver sensitivity of the node, a clear channel assessment detection range of the node, or a transmit power of the node. Related apparatus, systems, methods, and articles are also described.Type: ApplicationFiled: July 22, 2014Publication date: January 28, 2016Inventors: Hossein Ali Safavi Naeini, Chittabrata Ghosh, Klaus Franz Doppler, Sayantan Choudhury, Sumit Roy
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Patent number: 9247556Abstract: The exemplary embodiments provide at least a method of receiving, by a node of a wireless communication network, more than one indication of data required to be sent from devices in the network, determining that provisioning resources to send the data in response to each of the more than one indication exceeds at least one threshold, and based on the determining, sending a probe message including a priority constraint to the devices. Further, receiving, at a device of a wireless communication network, a probe message from a network node of the network, the probe message identifying a priority constraint, sending, by the device, an acknowledgement to the probe message, the acknowledgment indicating that the device has data to send which meets or exceeds the priority constraint identified in the probe message, and in response to the acknowledgment, receiving from the network node a resource allocation to send the data.Type: GrantFiled: November 30, 2011Date of Patent: January 26, 2016Assignee: Nokia Technologies OyInventors: Taejoon Kim, Sayantan Choudhury, Zhong-Yi Jin, Klaus F. Doppler, Chittabrata Ghosh, Hongkun Li
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Patent number: 9226305Abstract: The exemplary embodiments of the invention relate to at least a method including receiving an indication that a first resource allocation to a device to transmit data was insufficient and there is remaining data to transmit by the device, based at least on information associated with the first resource allocation, determining a second resource allocation for the device, and sending the second resource allocation to the device in order to enable the device to transmit the remaining data. Further, there is a method including sending an indication that a first resource allocation to a device to transmit data was insufficient and there is remaining data to transmit, and in response to the sending, receiving a second resource allocation to the device to enable the device to transmit remaining data, wherein the second resource allocation is based at least on information associated with the first resource allocation.Type: GrantFiled: November 7, 2012Date of Patent: December 29, 2015Assignee: Nokia Technologies OyInventors: Chittabrata Ghosh, Sayantan Choudhury, Klaus F. Doppler, Taejoon Kim, Zhong-Yi Jin, Hongkun Li
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Patent number: 9226318Abstract: There is provided a method, comprising: receiving, by a target node of a wireless access network, a signal from a first source node; determining the angular sector in which the first source node is located with respect to the target node; responding to the signal by both transmitting a first message omni-directionally and transmitting a second message directionally towards the angular sector; and establishing a first resource reservation on a frequency channel at least partly on the basis of transmitting the first message and the second message, wherein the first resource reservation is for performing directional data transfer with the first source node.Type: GrantFiled: September 6, 2013Date of Patent: December 29, 2015Assignee: Nokia Technologies OyInventors: Andre Mendes Cavalcante, Sayantan Choudhury, Fabiano Chaves, Esa Juhani Tuomaala, Fuad Mousse Abinader, Jr., Erika Portela Lopes De Almeida, Robson Domingos Vieira, Klaus Franz Doppler
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Patent number: 9197367Abstract: A method for reporting uplink control information (UCI) on a user equipment (UE) is described. The UCI is coded using a first block coder and a second block coder to obtain an output bit sequence. The output bit sequence is scrambled to obtain a scrambled signal. A block of complex-valued modulation symbols is generated from the scrambled signal for physical uplink control channel (PUCCH) Format 3. The first block coder and the second block coder use a Reed-Muller code.Type: GrantFiled: January 17, 2014Date of Patent: November 24, 2015Assignee: Sharp Kabushiki KaishaInventors: Shohei Yamada, Zhanping Yin, Sayantan Choudhury
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Patent number: 9185745Abstract: Embodiments of the invention provide signaling mechanisms for wireless networks composed of a large number of stations. An example method embodiment comprises: determining, by a wireless relay device, a first time window allocated for a first network, allowing first maximum transmit power for packet transmissions; and determining, by the wireless relay device, a second time window allocated for a second network, wherein the second time window is allowed for transmissions also within the first network, but only with second maximum transmit power that is lower than the first maximum transmit power.Type: GrantFiled: November 6, 2012Date of Patent: November 10, 2015Assignee: Nokia Technologies OYInventors: Chittabrata Ghosh, Sayantan Choudhury, Klaus Franz Doppler, Esa Tuomaala
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Patent number: 9173233Abstract: There is provided a method, comprising: detecting, by a node of a first wireless network, that at least one overlapping second wireless network is configured to apply contention periods and contention-free periods for communicating with different subsets of devices; detecting that a contention period timing applied by the at least one overlapping second wireless network is not aligned with a contention period timing applied by the node of the first wireless network; and causing a modification of the contention period timing in at least one of the wireless networks in order to have the contention periods to take place at least partly at the same time in each overlapping wireless network.Type: GrantFiled: October 28, 2013Date of Patent: October 27, 2015Assignee: Nokia Technologies OyInventors: Erika Portela Lopes De Almeida, Andre Mendes Cavalcante, Fuad Mousse Abinader, Jr., Sayantan Choudhury, Fabiano Chaves, Klaus Franz Doppler
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Patent number: 9143973Abstract: A method for reporting uplink control information (UCI) on a user equipment (UE) is described. Multiple channel state information (CSI) reports are generated for multiple component carriers (CCs) that are scheduled to be transmitted in a subframe. A method of prioritization for the CSI reports is selected. A highest priority CSI report of the multiple CSI reports is determined using the selected method of prioritization. The highest priority CSI report is transmitted.Type: GrantFiled: February 3, 2014Date of Patent: September 22, 2015Assignee: Sharp Kabushiki KaishaInventors: Sayantan Choudhury, Shohei Yamada
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Publication number: 20150264578Abstract: In one aspect the embodiments of the invention provide a method that includes transmitting a first frame comprising a first type of message from a first node for reception by a second node. The first node is associated with a first wireless communication system and the second node is associated with a second wireless communication system. The first type of message includes a first information element for identifying the second node and a second information element for specifying that the first frame is transmitted to initiate a request for simultaneous transmission by the first node and by the second node. The first frame is also received by a third node that is part of the first wireless communication system. The method further includes receiving from the third node a second frame that includes a second type of message.Type: ApplicationFiled: March 14, 2014Publication date: September 17, 2015Applicant: Nokia CorporationInventors: Fabiano de Sousa Chaves, Sayantan Choudhury, Fuad Mousse Abinader, JR., Andre Mendes Cavalcante, Erika Portela Lopes de Almeida, Esa Tuomaala, Klaus F. Doppler, Mika Kasslin
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Publication number: 20150264617Abstract: Systems and techniques for managing interference in wireless networking environments. Stations waiting to transmit are controlled so as to avoid undue interference with transmitting stations—for example, by restricting the use of a higher CCA threshold or otherwise requiring deference. Low power transmitting stations may be identified so that a monitoring station will defer its transmission even if the transmitting station is not in the monitoring station's BSS. Alternatively or in addition, stations may be configured to manage behavior that has a higher interference potential—such as by restricting the duration for which a station may use a higher CCA threshold.Type: ApplicationFiled: March 14, 2014Publication date: September 17, 2015Applicant: Nokia CorporationInventors: Sayantan Choudhury, Klaus Doppler
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Publication number: 20150244446Abstract: A wireless communication device may autonomously transition from a multiple antenna port mode to a single antenna port mode. The wireless communication device may implicitly notify a base station about the autonomous transition from the multiple antenna port mode to the single antenna port mode. The base station may reallocate resources that were previously allocated to the wireless communication device but that are no longer being used by the wireless communication device. In some cases, the base station may configure the wireless communication device's antenna port mode via radio resource control signaling.Type: ApplicationFiled: April 27, 2015Publication date: August 27, 2015Inventors: Kimihiko Imamura, John Michael Kowalski, Sayantan Choudhury
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Patent number: 9107229Abstract: Method, apparatus, and computer program product embodiments configure channel access windows in overlapping network environments. An example method embodiment comprises: transmitting, by an access node, a measurement request to an associated wireless device, to perform measurements of signals received from other access nodes to which the device is not associated, the device being a member of a group of devices based on transmission by the access node to the device, of a directional beacon frame; receiving from the device, a measurement response comprising information on a directional message with an access node identifier of another access node to which the device is not associated; and determining a time window that may be used by devices that are members of the group, for transferring data between members of the group and the access node, based at least partly on the measurement response.Type: GrantFiled: December 3, 2012Date of Patent: August 11, 2015Assignee: Nokia Technologies OyInventors: Sayantan Choudhury, Chittabrata Ghosh, Esa Tuomaala, Klaus Franz Doppler, Amitav Mukherjee
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Publication number: 20150173010Abstract: Methods, apparatus and program products are disclosed for allowing wireless devices in two wireless access networks whose coverage areas overlap to communicate with their respective access nodes. Groups may be assigned to wireless devices in the access networks and the groups may be used by wireless devices in the access networks to determine whether to access a communication medium or not. Received powers may also be used by wireless devices in the access networks to determine whether or not to access a communication medium. A wireless device in a first access network can determine whether to access (e.g., compete for access to) the communication medium by comparing a measured power of transmission from a second access node with an indication of a minimum received power above which wireless devices in a second access network formed by a second access node are allowed to contend for access to the communication medium.Type: ApplicationFiled: December 12, 2013Publication date: June 18, 2015Applicant: Nokia CorporationInventors: Chittabrata Ghosh, Sayantan Choudhury
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Patent number: 9060307Abstract: A method for reporting uplink control information (UCI) on a user equipment (UE) is described. Multiple channel state information (CSI) reports are generated for multiple component carriers (CCs) that are scheduled to be transmitted in a subframe. A method of prioritization for the CSI reports is selected. A highest priority CSI report of the multiple CSI reports is determined using the selected method of prioritization. The highest priority CSI report is transmitted.Type: GrantFiled: February 3, 2014Date of Patent: June 16, 2015Assignee: Sharp Kabushiki KaishaInventors: Sayantan Choudhury, Shohei Yamada
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Patent number: 9059749Abstract: A wireless communication device may autonomously transition from a multiple antenna port mode to a single antenna port mode. The wireless communication device may implicitly notify a base station about the autonomous transition from the multiple antenna port mode to the single antenna port mode. The base station may reallocate resources that were previously allocated to the wireless communication device but that are no longer being used by the wireless communication device. In some cases, the base station may configure the wireless communication device's antenna port mode via radio resource control signaling.Type: GrantFiled: October 2, 2009Date of Patent: June 16, 2015Assignee: Sharp Kabushiki KaishaInventors: Kimihiko Imamura, John M. Kowalski, Sayantan Choudhury
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Publication number: 20150124712Abstract: Systems and techniques for management of wireless network transmission. A high efficiency wireless network that can operate using a contention free period defines an interframe space that is shorter than the interframe space used in legacy networks, so that a legacy network will be unable to contend for the medium if the high efficiency wireless network transmits during the contention free period. Before the contention free period begins, a high efficiency network element examines a transmission medium, and if an ongoing transmission extends into the contention free period, transmission by the high efficiency network is delayed until the end of the ongoing transmission. The high efficiency wireless network uses an interframe space sufficiently short that a legacy network cannot contend for the medium. After the contention free period, the high efficiency network uses an interframe space value on the order of that used by the legacy network.Type: ApplicationFiled: November 7, 2013Publication date: May 7, 2015Applicant: Nokia CorporationInventors: Klaus Franz Doppler, Sayantan Choudhury
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Publication number: 20150124706Abstract: A first access node of a first network utilizes code sequences, assigned to different user devices, to distinguish at least acknowledgements received in parallel or sequentially from those user devices. The first access node determines from received signaling that a root sequence of the code sequences is in use by a second access node of a second network, then changes that root sequence of the code sequences assigned to the different user devices. In certain examples the access nodes are WLAN access points APs and the acknowledgements are received in response to a group probe/poll. In various embodiments the first AP monitors its neighbors' group probes/polls to learn the root sequences/basic service sets in use in those neighbor networks, or the AP's own stations monitor and send the information in neighbor reports. This latter option can be initiated by the stations themselves, or by the AP.Type: ApplicationFiled: January 8, 2015Publication date: May 7, 2015Inventors: Taejoon Kim, Sayantan Choudhury, Klaus E. Doppler, Chittabrata Ghosh, Zhong-Yi Jin, Esa Tuomaala
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Publication number: 20150117418Abstract: There is provided a method, comprising: detecting, by a node of a first wireless network, that at least one overlapping second wireless network is configured to apply contention periods and contention-free periods for communicating with different subsets of devices; detecting that a contention period timing applied by the at least one overlapping second wireless network is not aligned with a contention period timing applied by the node of the first wireless network; and causing a modification of the contention period timing in at least one of the wireless networks in order to have the contention periods to take place at least partly at the same time in each overlapping wireless network.Type: ApplicationFiled: October 28, 2013Publication date: April 30, 2015Applicant: Nokia CorporationInventors: Erika Portela Lopes De Almeida, Andre Mendes Cavalcante, Fuad Mousse Abinader, JR., Sayantan Choudhury, Fabiano Chaves, Klaus Franz Doppler
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Patent number: 9019874Abstract: Embodiments of the invention provide signaling mechanisms for wireless networks composed of a large number of stations. An example method embodiment comprises: receiving by a wireless terminal device, a first message from an access point, the first message comprising information indicating a plurality of restricted access windows, each allocated for a different group of terminal devices associated to a wireless network managed by the access point; receiving by the terminal device, a second message from the access point, within a restricted access window of the plurality of restricted access windows, the restricted access window allocated to a group of terminal devices of which the terminal device is a member, the second message comprising information indicating that a communications channel is available; and determining by the terminal device, based on the second message, that the communications channel is not occupied by hidden ones of the terminal devices associated to the network.Type: GrantFiled: June 27, 2012Date of Patent: April 28, 2015Assignee: Nokia CorporationInventors: Sayantan Choudhury, Chittabrata Ghosh, Taejoon Kim, Klaus Franz Doppler, Esa Tuomaala
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Patent number: 9008152Abstract: Embodiments of the invention provide signaling mechanisms for wireless networks composed of a large number of stations.Type: GrantFiled: August 27, 2013Date of Patent: April 14, 2015Assignee: Nokia Technologies OyInventors: Krishna C. Garikipati, Sayantan Choudhury