Patents by Inventor Hitoshi Iochi
Hitoshi Iochi 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: 8599798Abstract: A control information channel signal formation unit has a channel encoding section and a spreading section. The channel encoding section multiplexes a plurality of types of control information for a single communication terminal for use in uplink packet transmission, using different symbol patterns between a plurality of types of control information. The spreading section spreads symbols obtained by the channel encoding section using one spreading code.Type: GrantFiled: April 27, 2012Date of Patent: December 3, 2013Assignee: Panasonic CorporationInventors: Hitoshi Iochi, Hidetoshi Suzuki
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Patent number: 8259693Abstract: The present invention relates to a method and mobile terminal for performing a data allocation process for scheduled data, non-scheduled user data and non-scheduled control data obeying restrictions on the resource utilization defined by a scheduling grant and at least one non-scheduled grant. Further, the invention relates to a method for transmitting control signaling from a network entity in a radio access network of a mobile communication system controlling the radio resources of mobile terminals to at least one of said mobile terminal and the network entity in a radio access network. In order to reduce the delays to control signaling implied by a conventional HARQ process restriction mechanism the present invention suggests a new categorization of uplink data into scheduled data, non-scheduled user data and non-scheduled control data and a new HARQ process restriction mechanism disabling certain HARQ processes for non-scheduled user data only.Type: GrantFiled: September 29, 2008Date of Patent: September 4, 2012Assignee: Panasonic CorporationInventors: Joachim Lohr, Hitoshi Iochi
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Publication number: 20120218955Abstract: A control information channel signal formation unit has a channel encoding section and a spreading section. The channel encoding section multiplexes a plurality of types of control information for a single communication terminal for use in uplink packet transmission, using different symbol patterns between a plurality of types of control information. The spreading section spreads symbols obtained by the channel encoding section using one spreading code.Type: ApplicationFiled: April 27, 2012Publication date: August 30, 2012Applicant: PANASONIC CORPORATIONInventors: Hitoshi IOCHI, Hidetoshi Suzuki
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Patent number: 8194618Abstract: In addition to dedicated channel signal formation units 101-1 to 101-N, control information channel signal formation unit 110 is provided and this control information channel signal formation unit 110 forms control information for carrying out uplink packet transmission. The control information channel signal formation unit 110 multiplexes control information (RG information, ACK/NACK, etc.) directed to a plurality of communication terminals through a channel encoding section 111 according to a multiplexing rule preset between the base station apparatus and each communication terminal and spreads the control information using a spreading code common to the communication terminals through a spreading section 113 and thereby forms a control information channel signal for uplink packet transmission.Type: GrantFiled: April 28, 2004Date of Patent: June 5, 2012Assignee: Panasonic CorporationInventors: Hitoshi Iochi, Hidetoshi Suzuki
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Patent number: 8068475Abstract: A radio base station apparatus wherein the consumption of transmission power resources in a high-rate packet transmission can be suppressed. In the apparatus, a scheduling part (31) limits the candidates of an upstream line packet transmission rate to part of a plurality of transmission rates indicated by transmission rate combination information, selects an upstream line packet transmission rate from among the limited transmission rate candidates, and creates scheduling result information including transmission rate information indicative of the selected transmission rate. The scheduling result information is wireless transmitted from an antenna (108) to a communication terminal that is permitted to transmit upstream line packets.Type: GrantFiled: April 22, 2005Date of Patent: November 29, 2011Assignee: Panasonic CorporationInventors: Hitoshi Iochi, Hidetoshi Suzuki
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Patent number: 7860052Abstract: The invention relates to a mobile terminal communicating resource requests for dedicated uplink channel resources in a mobile communication system. Further, the invention also relates to a method for communicating resource requests for dedicated uplink channel resources in a mobile communication system. To allow the serving cell to detect “DOWN” commands from non-serving cells during soft handover the invention suggests a new definition of criteria for setting the “happy bit” in the control information associated to data transmitted on dedicated uplink channels. According to these criteria the mobile terminal may not indicate an unhappy condition while ramping up resource utilization. Only if resources equivalent to the maximum serving grant are utilized, the transmission buffer status requires to and the power status of the terminal allows for the happy bit is set to indicate a unhappy condition.Type: GrantFiled: March 31, 2006Date of Patent: December 28, 2010Assignee: Panasonic CorporationInventors: Joachim Lohr, Hitoshi Iochi, Dragan Petrovic
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Patent number: 7620417Abstract: A communication terminal apparatus that can perform an appropriate system operation at the network side and also can avoid a reduction in throughput and a reduction in system efficiency. In this apparatus, a compressed mode calculating part (124) determines, based on compressed information and slot format information, a slot that is a gap in a frame of a compressed mode. A transmission power control part (125) establishes a transmission power obtained by increasing, by &Dgr; Pilot, the transmission power as designated and set by a TPC command for the slots other than the gap in the frame of the compressed mode. A DPCCH transmission power reporting part (127) outputs, to a channel encoding part (128), a report value indicative of the transmission power obtained by removing the effect of &Dgr; Pilot from the transmission power established by the transmission power control part (125).Type: GrantFiled: June 14, 2005Date of Patent: November 17, 2009Assignee: Panasonic CorporationInventors: Hitoshi Iochi, Hidetoshi Suzuki
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Publication number: 20090034487Abstract: The present invention relates to a method and mobile terminal for performing a data allocation process for scheduled data, non-scheduled user data and non-scheduled control data obeying restrictions on the resource utilization defined by a scheduling grant and at least one non-scheduled grant. Further, the invention relates to a method for transmitting control signaling from a network entity in a radio access network of a mobile communication system controlling the radio resources of mobile terminals to at least one of said mobile terminal and the network entity in a radio access network. In order to reduce the delays to control signaling implied by a conventional HARQ process restriction mechanism the present invention suggests a new categorization of uplink data into scheduled data, non-scheduled user data and non-scheduled control data and a new HARQ process restriction mechanism disabling certain HARQ processes for non-scheduled user data only.Type: ApplicationFiled: September 29, 2008Publication date: February 5, 2009Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Joachim Lohr, Hitoshi Iochi
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Publication number: 20080310385Abstract: A radio base station apparatus wherein the consumption of transmission power resources in a high-rate packet transmission can be suppressed. In the apparatus, a scheduling part (31) limits the candidates of an upstream line packet transmission rate to part of a plurality of transmission rates indicated by transmission rate combination information, selects an upstream line packet transmission rate from among the limited transmission rate candidates, and creates scheduling result information including transmission rate information indicative of the selected transmission rate. The scheduling result information is wireless transmitted from an antenna (108) to a communication terminal that is permitted to transmit upstream line packets.Type: ApplicationFiled: April 22, 2005Publication date: December 18, 2008Applicant: Matsushita Electric Industrial Co., LtdInventors: Hitoshi Iochi, Hidetoshi Suzuki
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Patent number: 7447504Abstract: The present invention relates to a method and mobile terminal for performing a data allocation process for scheduled data, non-scheduled user data and non-scheduled control data obeying restrictions on the resource utilization defined by a scheduling grant and at least one non-scheduled grant. Further, the invention relates to a method for transmitting control signaling from a network entity in a radio access network of a mobile communication system controlling the radio resources of mobile terminals to at least one of said mobile terminal and the network entity in a radio access network. In order to reduce the delays to control signaling implied by a conventional HARQ process restriction mechanism the present invention suggests a new categorization of uplink data into scheduled data, non-scheduled user data and non-scheduled control data and a new HARQ process restriction mechanism disabling certain HARQ processes for non-scheduled user data only.Type: GrantFiled: July 21, 2006Date of Patent: November 4, 2008Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Joachim Lohr, Hitoshi Iochi
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Publication number: 20080254804Abstract: The invention relates to a method for scheduling mobile terminals within a mobile communication network and to a base station performing this method. Further, the invention relates to a method for acting upon the reception of scheduling grants in a mobile communication system and to a mobile terminal performing this method. To allow the serving cell to control resource utilization for uplink transmissions of UEs in soft-handover, without thereby decreasing the system throughput of UEs in the serving cell which are not in soft-handover, the invention proposes to use control information transmitted via a shared absolute grant channel to the UEs along with an absolute grant, wherein the control information indicate whether the absolute grant is valid for mobile terminals in soft-handover only.Type: ApplicationFiled: February 7, 2006Publication date: October 16, 2008Applicant: MATSHSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Joachim Lohr, Hitoshi Iochi, Dragan Petrovic
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Publication number: 20080076462Abstract: A communication terminal apparatus that can perform an appropriate system operation at the network side and also can avoid a reduction in throughput and a reduction in system efficiency. In this apparatus, a compressed mode calculating part (124) determines, based on compressed information and slot format information, a slot that is a gap in a frame of a compressed mode. A transmission power control part (125) establishes a transmission power obtained by increasing, by &Dgr; Pilot, the transmission power as designated and set by a TPC command for the slots other than the gap in the frame of the compressed mode. A DPCCH transmission power reporting part (127) outputs, to a channel encoding part (128), a report value indicative of the transmission power obtained by removing the effect of &Dgr; Pilot from the transmission power established by the transmission power control part (125).Type: ApplicationFiled: June 14, 2005Publication date: March 27, 2008Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Hitoshi Iochi, Hidetoshi Suzuki
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Publication number: 20070297360Abstract: The invention relates to a mobile terminal communicating resource requests for dedicated uplink channel resources in a mobile communication system. Further, the invention also relates to a method for communicating resource requests for dedicated uplink channel resources in a mobile communication system. To allow the serving cell to detect “DOWN” commands from non-serving cells during soft handover the invention suggests a new definition of criteria for setting the “happy bit” in the control information associated to data transmitted on dedicated uplink channels. According to these criteria the mobile terminal may not indicate an unhappy condition while ramping up resource utilization. Only if resources equivalent to the maximum serving grant are utilized, the transmission buffer status requires to and the power status of the terminal allows for the happy bit is set to indicate a unhappy condition.Type: ApplicationFiled: March 31, 2006Publication date: December 27, 2007Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Lohr Joachim, Hitoshi Iochi, Petrovic Dragan
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Patent number: 7295538Abstract: A base station apparatus (radio transmission apparatus) transmits a radio signal of data to a mobile terminal apparatus (communication apparatus of a transmission destination). The mobile terminal apparatus receiving the radio signal determines (ST1010) information (CQI) on a downlink transmission rate enabling reception in the mobile terminal apparatus based on reception quality such as CIR to transmit to the base station apparatus. The base station apparatus extracts a CQI value from the received radio signal, while obtaining likelihood of received data (ST1020), and corrects the CQI value based on the likelihood (ST1030). Then, based on the corrected CQI value, the base station apparatus determines a downlink transmission rate (ST1040).Type: GrantFiled: February 3, 2004Date of Patent: November 13, 2007Assignee: Matsushita Electric Industrial Co., LtdInventors: Junichi Aizawa, Hitoshi Iochi, Kazuyuki Miya
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Patent number: 7257423Abstract: Transmission destination determiner 301 selects individual communication terminal apparatus as candidates to transmit packets to and determines a transmission destination apparatus based on CQI signals from these communication terminal apparatuses. Transmission power determiner 302 monitors transmission power resources and determines the transmission power of an HS-PDSCH and the transmission power of a pilot channel. HS-PDSCH SIR estimator 303 estimates the SIR of the HS-PDSCH at the transmission destination apparatus based on the CQI signal and the transmission power. MCS determiner 304 determines the maximum TBS based on the HS-PDSCH SIR and indicates an MCS corresponding to the determined TBS to modulator 153. By this means, it is possible to maximize throughput in consideration of the transmission power of the HS-PDSCH.Type: GrantFiled: November 4, 2003Date of Patent: August 14, 2007Assignee: Matsushita Electric Industrial Co., Ltd.Inventor: Hitoshi Iochi
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Publication number: 20070047451Abstract: The present invention relates to a method and mobile terminal for performing a data allocation process for scheduled data, non-scheduled user data and non-scheduled control data obeying restrictions on the resource utilization defined by a scheduling grant and at least one non-scheduled grant. Further, the invention relates to a method for transmitting control signaling from a network entity in a radio access network of a mobile communication system controlling the radio resources of mobile terminals to at least one of said mobile terminal and the network entity in a radio access network. In order to reduce the delays to control signaling implied by a conventional HARQ process restriction mechanism the present invention suggests a new categorization of uplink data into scheduled data, non-scheduled user data and non-scheduled control data and a new HARQ process restriction mechanism disabling certain HARQ processes for non-scheduled user data only.Type: ApplicationFiled: July 21, 2006Publication date: March 1, 2007Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Joachim Lohr, Hitoshi Iochi
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Publication number: 20060246935Abstract: A scheduling apparatus is provided that enables user throughput and system throughput to be improved in a radio communication system. In this apparatus, a management section (100) distributes a reception power resource set by a radio network controller (10) to a plurality of transmission schemes used in uplink data transmission based on information reported from mobile station apparatuses (30-1 through 30-N). A first transmission scheme scheduling section (110) and second transmission scheme scheduling section (120) execute uplink data transmission scheduling in accordance with reception power resources distributed to the plurality of transmission schemes.Type: ApplicationFiled: January 25, 2005Publication date: November 2, 2006Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Hitoshi Iochi, Hidetoshi Suzuki
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Publication number: 20060203727Abstract: A base station apparatus (radio transmission apparatus) transmits a radio signal of data to a mobile terminal apparatus (communication apparatus of a transmission destination). The mobile terminal apparatus receiving the radio signal determines (ST1010) information (CQI) on a downlink transmission rate enabling reception in the mobile terminal apparatus based on reception quality such as CIR to transmit to the base station apparatus. The base station apparatus extracts a CQI value from the received radio signal, while obtaining likelihood of received data (ST1020), and corrects the CQI value based on the likelihood (ST1030). Then, based on the corrected CQI value, the base station apparatus determines a downlink transmission rate (ST1040).Type: ApplicationFiled: February 3, 2004Publication date: September 14, 2006Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.Inventors: Junichi Aizawa, Hitoshi Iochi, Kazuyuki Miya
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Publication number: 20060165091Abstract: A UE/queue selected by a scheduler is input to an offset table (111) and a corresponding offset value is output to a CQI conversion section (112). Using this offset value, the CQI conversion section (112) converts a CQI output from a demodulation/decoding section and outputs the converted CQI to an adaptive modulation parameter determination section (113). Based on the converted CQI, the adaptive modulation parameter determination section (113) determines and outputs adaptive modulation parameters with reference to an adaptive modulation parameter table (114). Then, a transmission packet is adaptively modulated using these adaptive modulation parameters. This makes it possible to realize fast data transmission while satisfying QoS of the transmission packet.Type: ApplicationFiled: November 26, 2003Publication date: July 27, 2006Applicant: Matsushita Electronic Industrial Co., Ltd.Inventors: Takenobu Arima, Hitoshi Iochi
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Publication number: 20060111119Abstract: A communication terminal apparatus is provided that is used in a CDMA radio communication system. In this apparatus, a resource allocation section (191) allocates first channel and second channel resources based on DPCCH transmission power and an offset value. A TFC Selection section (162) creates TFCs based on buffer amounts stored in buffers (161-1 through 161-N), and performs selection of usable TFCs (TFC Selection) based on first channel resources allocated by resource allocation section 191. A TFC decision section (163) decides on one TFC from among the usable TFCs based on DCH#1 through #N priority information. By this means, this apparatus can perform control so that the total transmission power of all channels does not exceed the maximum transmission power when there are uplink channels that are subject to TFC selection and uplink channels that are not subject to TFC selection.Type: ApplicationFiled: August 11, 2004Publication date: May 25, 2006Applicant: Matsushita Electric Industrial co., LtdInventor: Hitoshi Iochi