Patents Assigned to Optis Cellular Technology, LLC
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Patent number: 9385833Abstract: Embodiments herein relate to a method in a transceiver (400) for enabling control of interference cancelling in the transceiver (400). The transceiver (400) is in a first decoding mode. The transceiver (400) stores a received signal comprising a data block. The transceiver (400) decodes the received signal using the first decoding mode, thereby obtaining the data block. When an event is triggered, the transceiver (400) retrieves the stored signal. The transceiver (400) decodes the retrieved signal using a second decoding mode, thereby obtaining the data block. The transceiver (400) controls the interference cancelling in the transceiver (400), based on the data block decoded using the first decoding mode and the data block decoded using the second decoding mode.Type: GrantFiled: May 31, 2012Date of Patent: July 5, 2016Assignee: Optis Cellular Technology, LLCInventors: Bengt Lindoff, Konstantinos Dimou, Matthias Kamuf
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Patent number: 9369997Abstract: Methods and arrangements in a control node, a base station and a UE, for achieving a UE up link transmit diversity mode adaptation, which is coordinated between a base station and a control node. The methods and arrangements involve the control node indicating a set of allowed up link transmit diversity modes to the base station. Further, an up link transmit diversity mode for the mobile terminal is selected in the base station, from amongst the currently allowed up link transmit diversity modes; where the selection is based on information concerning the mobile terminal which is available in the base station. The base station then indicates the selected up link transmit diversity mode to the mobile terminal, which changes to the up link transmit diversity mode indicated by the base station. The methods and arrangements enable a faster and more flexible UE up link transmit diversity mode adaptation.Type: GrantFiled: January 26, 2011Date of Patent: June 14, 2016Assignee: Optis Cellular Technology, LLCInventors: Jinhua Liu, Johan Bergman, Johan Hultell, Qingyu Miao
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Patent number: 9351228Abstract: Systems and methods for computing and/or utilizing mutual information based link metrics for a link in a wireless mesh network are disclosed. In one embodiment, one or more mutual information values are computed for a link between a transmitter of a first network node and a receiver of a second network node in a wireless mesh network. Each of the one or more mutual information values is computed for a different hypothesized transmission mode for the link. One or more link metrics for the link are computed as a function of the mutual information values, where each link metric is computed based on a different one of the one or more mutual information values. In this manner, a link metric is computed for each of the one or more hypothesized transmission modes for the link. At least one of the link metrics are then provided to a routing update module.Type: GrantFiled: September 24, 2013Date of Patent: May 24, 2016Assignee: Optis Cellular Technology, LLCInventors: Dennis Hui, Johan Axnäs, Kumar Balachandran, Robert Baldemair, Hugo Tullberg
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Patent number: 9350513Abstract: Methods and apparatus for performing HARQ performed by a user equipment (UE) are provided. A bundling indicator is received which indicates the number of bundled downlink subframes, and a determination is made whether at least one bundled downlink subframe is missed by comparing the bundling indicator with the number of detected bundled downlink subframes. A representative ACK/NACK signal is generated when no bundled downlink subframe is missed, and the representative ACK/NACK signal is transmitted on an uplink channel. Recovery capability is maximized and packet loss is reduced so that fewer ACK/NACK signals are fed back than downlink packets.Type: GrantFiled: July 28, 2015Date of Patent: May 24, 2016Assignee: Optis Cellular Technology, LLCInventors: Joon Kui Ahn, Dae Won Lee, Young Woo Yun, Ki Jun Kim
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Patent number: 9294318Abstract: A receiver is configured to perform symbol detection based on a total frequency domain received signal that comprises contribution from a block of time domain symbols. The receiver is configured to divide the block into plural sub-blocks, and for each sub-block to jointly detect the symbols of the sub-block while treating symbols of the block which are outside of the sub-block as noise.Type: GrantFiled: June 2, 2014Date of Patent: March 22, 2016Assignee: Optis Cellular Technology, LLCInventor: Yi-Pin Eric Wang
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Patent number: 9288719Abstract: Systems and methods for link adaptation for a multi-hop route in a wireless mesh network are disclosed. In one embodiment, a wireless mesh network includes network nodes in a route through the wireless mesh network. The network nodes determine a bottleneck information flow rate for the route based on backward propagation of information indicative of a tentative bottleneck information flow rate for the route from an ending network node to a starting network node through one or more intermediate network nodes. A target information flow rate for the route that is less than or equal to the bottleneck information flow rate for the route is determined. A Modulation and Coding Scheme (MCS) and, in some embodiments, a transmission mode is determined for each network node in the route other than the ending network node based on forward propagation of information indicative of the target information flow rate for the route.Type: GrantFiled: September 27, 2013Date of Patent: March 15, 2016Assignee: Optis Cellular Technology, LLCInventors: Dennis Hui, Hugo Tullberg
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Patent number: 9264919Abstract: The invention relates to a method for estimating performance in a mobile network, a method for generating a performance map, use of such methods, a network management system, and a network node in the mobile network for performing the methods. The exemplary method including receiving localized user equipment measurements from a user equipment in the mobile network, including the user equipment measurements in sets and determining at least one antenna characteristics model for the set of user equipment measurements. A path loss model is determined for the user equipment measurements. A localized performance measurement is determined by deducting an estimated antenna impact from the estimated path loss for the user equipment measurement. The operations are repeated to generate a spatial performance map for the mobile network, wherein updates of the spatial performance map are based on further user equipment measurements from the user equipment in the mobile network.Type: GrantFiled: June 1, 2011Date of Patent: February 16, 2016Assignee: Optis Cellular Technology, LLCInventors: Fredrik Gunnarsson, Mehdi Amirijoo, Johan Moe
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Patent number: 9265031Abstract: A lightweight communication protocol reduces overhead for small data transmissions from a wireless device to a base station over an uplink channel. The wireless device is preconfigured with a device identifier that is known to the base station. The preconfigured device identifier is associated with a static tunnel between the base station and a serving gateway. The wireless device transmits application data to the base station in a medium access control packet without using higher layer protocols. When the base station receives the medium access control packet, it maps the application data to the tunnel associated with the preconfigured device identifier.Type: GrantFiled: December 20, 2012Date of Patent: February 16, 2016Assignee: Optis Cellular Technology, LLCInventors: Geoffrey McHardy, Stefan F. Tjärnlund
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Patent number: 9197246Abstract: The iterative decoding of blocks may be continued or terminated based on CRC checks. In an example embodiment, one iteration of an iterative decoding process is performed on a block whose information bits are covered by a CRC. The iterative decoding process is stopped if the CRC checks for a predetermined number of consecutive iterations. In another example embodiment, a decoding iteration is performed on a particular sub-block of multiple sub-blocks of a transport block, which includes a single CRC over an entirety of the transport block. The CRC is checked using decoded bits obtained from the decoding iteration on the particular sub-block and decoded bits obtained from previous decoding iterations on other sub-blocks of the multiple sub-blocks. The decoding iteration is then performed on a different sub-block if the CRC does not check. Also, the decoding iterations for the sub-blocks may be terminated if the CRC checks.Type: GrantFiled: July 31, 2013Date of Patent: November 24, 2015Assignee: Optis Cellular Technology, LLCInventors: Rajaram Ramesh, Havish Koorapaty, Jung-Fu Cheng, Kumar Balachandran
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Patent number: 9184771Abstract: A method and apparatus for digital down conversion and demodulation of a radio frequency (RF) signal are disclosed. A sampling frequency for sampling the RF signal is chosen, based on a bandwidth and a safety margin, so that a bandwidth of the sampled signal falls substantially within a predetermined frequency zone. The sampled signal may be digitally demodulated at a demodulation frequency selected to be substantially equal to a baseband alias of a carrier frequency of the signal.Type: GrantFiled: October 12, 2011Date of Patent: November 10, 2015Assignee: Optis Cellular Technology, LLCInventor: Pierre-Andre Laporte
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Patent number: 9124407Abstract: A method of generating a reference signal includes acquiring a base sequence and acquiring a reference signal sequence with a length N from the base sequence. Good PAPR/CM characteristics of the reference signal can be kept to enhance performance of data demodulation or uplink scheduling.Type: GrantFiled: April 3, 2014Date of Patent: September 1, 2015Assignee: Optis Cellular Technology, LLCInventors: Seung Hee Han, Minseok Noh, Daewon Lee
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Patent number: 9100159Abstract: A method of performing HARQ performed by a user equipment (UE) is provided. The method includes receiving a bundling indicator which indicates the number of bundled downlink subframes, determining whether at least one bundled downlink subframe is missed by comparing the bundling indicator with the number of detected bundled downlink subframes, generating a representative ACK/NACK signal when no bundled downlink subframe is missed, and transmitting the representative ACK/NACK signal on an uplink channel. Recovery capability is maximized and the packet loss is reduced in such a situation that less number of ACK/NACK signals are fed back than that of downlink packets.Type: GrantFiled: January 9, 2015Date of Patent: August 4, 2015Assignee: Optis Cellular Technology, LLCInventors: Joon Kui Ahn, Dae Won Lee, Young Woo Yun, Ki Jun Kim
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Publication number: 20150111504Abstract: A Calibration Coupling Unit, CCU, and a method therein for enabling calibration of a Base Station are provided. The CCU comprises an Antenna Interface Standards Group, AISG, interface and the CCU is connected to the Base Station by means of radio branch feeder cables carrying uplink and downlink transmissions to/from the Base Station. The Base Station comprises a Radio Unit, RU, and a Base Band Unit, BBU, and the CCU is further connectable to an antenna array comprising antenna elements. The method in the CCU comprises receiving (110) at least one calibration signal from the RU on at least one radio branch feeder cable of the CCU; and converting (130) the calibration signal to a receiving frequency band of the RU. The method further comprises providing (140) the converted signal to the RU via at least one of the radio branch feeder cables, thereby enabling calibration of the Base Station.Type: ApplicationFiled: June 12, 2012Publication date: April 23, 2015Applicant: Optis Cellular Technology, LLCInventors: Chunhui Zhang, Fredrik Huss, Youping Su
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Patent number: 9014206Abstract: In a method for improving the transmission efficiency in a communication system with a layered protocol stack, data packets are processed on an upper protocol layer. Data packets are forwarded to a lower protocol layer for transmission and the transmission is performed with variable channel access delays. The upper protocol layer is notified by the lower protocol layer when a transmission is started to allow a synchronization of timers in the upper protocol layer. If a layer performs a scheduling of data packets for the transmission, a rescheduling is performed alternatively or in addition during a channel access delay. Devices and software programs embodying the invention are also described.Type: GrantFiled: October 23, 2006Date of Patent: April 21, 2015Assignee: Optis Cellular Technology, LLCInventors: Joachim Sachs, Stefan Wager, Bela Rathonyi
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Patent number: 9006637Abstract: The invention discloses a photo detector with first and second groups of electrodes. The electrodes of each group are connected to a first common conductor for the group, and are located on a layer of photosensitive material. The electrodes are parallel to and interlaced with each other. The first common conductors are essentially plane, arranged at the same end of their group of electrodes, and arranged as upper and lower conductors parallel to and overlapping each other separated by a dielectric material, and form a signal electrode and a ground plane of a first microstrip line. The first microstrip line acts as a first combiner for currents induced in the electrodes of the two groups and as a matching network for the electrodes and for a load which can be connected to the photo detector.Type: GrantFiled: November 12, 2008Date of Patent: April 14, 2015Assignee: Optis Cellular Technology, LLCInventors: Anatoli Deleniv, Spartak Gevorgyan, Arne Alping
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Patent number: 9008072Abstract: A method and device for performing a contention based random access procedure by a mobile communication terminal in communication with a base station. The method according to an embodiment includes transmitting a random access preamble message to the base station; receiving a random access response from the base station, the random access response including a timing advance command; determining a status of a mobile communication terminal time alignment timer; and ignoring the timing advance command if the mobile communication terminal time alignment timer is determined to be running in the determining step.Type: GrantFiled: October 21, 2010Date of Patent: April 14, 2015Assignee: Optis Cellular Technology, LLCInventors: Sung Jun Park, Seung June Yi, Young Dae Lee, Sung Duck Chun
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Patent number: 9002644Abstract: In methods and devices for providing a guaranteed quality of service to a subscriber of a service in a cellular radio system, a start position and an end position are received along with a required quality of service, QoS. Cell site positions are associated with possible user geographical/street paths that will take the subscriber from the start position to the end position and search for paths that will guarantee the required QoS. Based on the search the path that best satisfies the entered input criteria is selected and output to the subscriber.Type: GrantFiled: February 18, 2011Date of Patent: April 7, 2015Assignee: Optis Cellular Technology, LLCInventors: Min Wang, Marten Ericson
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Patent number: 9001674Abstract: Wireless nodes for use in a radio system are provided. A wireless node for use in a radio system may include a transmit and receive unit configured to request sensing information of at least one radio resource from at least one other wireless node of the radio system, and to receive the sensing information of the at least one radio resource from the at least one other wireless node of the radio system. The wireless node may include a sensing unit configured to determine whether a particular radio resource among the at least one radio resource is free to use based on the sensing information received from the at least one other wireless node. Related methods are also provided.Type: GrantFiled: March 23, 2009Date of Patent: April 7, 2015Assignee: Optis Cellular Technology, LLCInventors: Peter Larsson, Yngve Selén, Mikael Prytz
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Patent number: 9001814Abstract: A method for transmitting uplink signals, which include ACK/NACK signals, control signals other than the ACK/NACK signals, and data signals, is disclosed. The method comprises serially multiplexing the control signals and the data signals; sequentially mapping the multiplexed signals within a specific resource region in accordance with a time-first mapping method, the specific resource region including a plurality of symbols and a plurality of virtual subcarriers; and arranging the ACK/NACK signals at both symbols near symbols to which a reference signal of the plurality of symbols is transmitted. Thus, the uplink signals can be transmitted to improve receiving reliability of signals having high priority.Type: GrantFiled: December 9, 2011Date of Patent: April 7, 2015Assignee: Optis Cellular Technology, LLCInventors: Dae Won Lee, Bong Hoe Kim, Young Woo Yun, Ki Jun Kim, Dong Wook Roh, Hak Seong Kim, Hyun Wook Park
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Patent number: 8982854Abstract: A method for transmitting downlink data using resource blocks at a base station in a wireless mobile communication system includes transmitting downlink data mapped to physical resource blocks (PRBs) to a user equipment, wherein indexes of virtual resource blocks (VRBs) are mapped to indexes of the PRBs for a first slot and a second slot of a subframe, and the indexes of the PRBs for the second slot are shifted with respect to the indexes of the PRBs for the first slot based on a predetermined gap, and wherein a predetermined offset is applied to an index of a PRB when the index of the PRB is equal to or greater than a predetermined threshold.Type: GrantFiled: October 8, 2013Date of Patent: March 17, 2015Assignee: Optis Cellular Technology, LLCInventors: Dong Youn Seo, Eun Sun Kim, Bong Hoe Kim, Joon Kui Ahn