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公开(公告)号：PH12015502518A1
公开(公告)日：2016-02-29
申请号：PH12015502518
申请日：2015-11-03
Applicant: QUALCOMM INC
Inventor： NAGA BHUSHAN , PRASAD MALLADI DURGA , YONGBIN WEI , PETER GAAL , TAO LUO , TINGFANG JI , BERNARD HORN GAVIN , WANSHI CHEN , ALEKSANDAR DAMNJANOVIC
Abstract: Methods and apparatuses are described in which an unlicensed spectrum is used for Long Term Evolution (LTE) communications. A first method includes comparing past transmission activity on an unlicensed spectrum to an activity threshold, transmitting a first subframe type in the unlicensed spectrum during a next active transmission when the past transmission activity is greater than the activity threshold, and transmitting a second subframe type in the unlicensed spectrum during a next active transmission when the past transmission activity is lesser than the activity threshold, the second subframe type comprising a more robust subframe type than the first subframe type. A second method includes generating one or both of PUCCH signals and PUSCH signals based on interleaved signals that increase nominal bandwidth occupancy in an unlicensed spectrum, and transmitting the generated signals in the unlicensed spectrum. A third method includes receiving the PUCCH signals and the PUSCH signals.
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2.发明专利
公开(公告)号：MY154821A
公开(公告)日：2015-07-31
申请号：MYPI20090338
申请日：2007-08-21
Applicant: QUALCOMM INC
Inventor： PRASAD MALLADI DURGA , ALEKSANDAR DAMNJANOVIC , JUAN MONTOJO
IPC: H04W4/00
Abstract: TECHNIQUES FOR ACCESSING A WIRELESS COMMUNICATION SYSTEM ARE DESCRIBED. A USER EQUIPMENT (UE) (116, 122) SENDS A RANDOM ACCESS PREAMBLE FOR SYSTEM ACCESS. THE RANDOM ACCESS PREAMBLE MAY INCLUDE A RANDOM IDENTIFIER (ID), A CHANNEL QUALITY INDICATOR (CQI), ETC. THE UE MAY RANDOMLY SELECT THE RANDOM ID OR MAY BE ASSIGNED THIS RANDOM ID. THE UE RECEIVES A RANDOM ACCESS RESPONSE FROM A BASE STATION. THE RANDOM ACCESS RESPONSE MAY INCLUDE CONTROL CHANNEL RESOURCES (E.G., CQI AND PC RESOURCES), UPLINK RESOURCES, AND/OR CONTROL INFORMATION (E.G., TIMING ADVANCE AND PC CORRECTION) FOR THE UE. THE RANDOM ACCESS RESPONSE MAY BE SENT IN TWO PARTS USING TWO MESSAGES. A FIRST MESSAGE MAY BE SENT ON A CONTROL CHANNEL AND MAY INCLUDE IDENTIFICATION INFORMATION AND POSSIBLY OTHER INFORMATION. A SECOND MESSAGE MAY BE SENT ON A SHARED DATA CHANNEL AND MAY INCLUDE REMAINING INFORMATION FOR THE RANDOM ACCESS RESPONSE.
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公开(公告)号：MY151494A
公开(公告)日：2014-05-30
申请号：MYPI20092513
申请日：2008-01-10
Applicant: QUALCOMM INC
Inventor： PRASAD MALLADI DURGA
IPC: H04L27/00
Abstract: SYSTEMS (100) AND METHODOLOGIES ARE DESCRIBED THAT FACILITATE MULTIPLEXING UNICAST REFERENCE SYMBOLS AND MULTICAST TRANSMISSIONS IN THE SAME TRANSMISSION TIME INTERVAL. IN PARTICULAR, MECHANISMS ARE PROVIDED THAT ENABLE MULTIPLEXING UNICAST REFERENCE SYMBOLS TO SINGLE FREQUENCY NETWORK TRANSMISSIONS THAT UTILIZE A LONGER CYCLIC PREFIX DURATION. UNICAST REFERENCE SYMBOLS ARE SENT IN A FIRST SYMBOL OF A SLOT CONTAINING BOTH UNICAST AND SINGLE FREQUENCY NETWORK TRANSMISSIONS. THE FREQUENCY UTILIZED FOR THE UNICAST REFERENCE SYMBOLS IS STAGGERED BETWEEN THE FIRST SYMBOL AND A SUBSEQUENT SYMBOL IN A SUB-FRAME.
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公开(公告)号：MY150177A
公开(公告)日：2013-12-13
申请号：MYPI20092639
申请日：2008-01-10
Applicant: QUALCOMM INC
Inventor： PRASAD MALLADI DURGA , BYOUNG-HOON KIM , TAO LUO
IPC: H04B1/707
Abstract: SYSTEMS AND METHODOLOGIES ARE DESCRIBED THAT FACILITATE SEARCHES FOR A CELL IN A WIRELESS COMMUNICATION ENVIRONMENT. A MOBILE DEVICE (116, 122, 900, 1150) CAN EMPLOY A SEARCHER THAT CAN DETECT TIMING INFORMATION RESPECTIVELY ASSOCIATED WITH PSCs AND CELLS TO DETERMINE THE CELL WITH THE HIGHEST CORRELATION. THE SEARCHER (502) CAN DETECT SSCs, WHICH CAN INCLUDE DETECTING ASSOCIATED PHASE INFORMATION, TO DETERMINE THE SSC WITH THE HIGHEST CORRELATION, CP LENGTH, AND/OR OTHER INFORMATION TO FACILITATE IDENTIFYING A DESIRED CELL HAVING THE STRONGEST SIGNAL TO ESTABLISH COMMUNICATION BETWEEN THE MOBILE DEVICE AND THE DESIRED CELL. PSCs RESPECTIVELY ASSOCIATED WITH CELLS CAN HAVE DIFFERENT POSITIONS IN THE SYMBOL SEQUENCES, AND SSCs CAN RESPECTIVELY BE PHASE SHIFTED AT DIFFERENT ANGLES TO FACILITATE DETECTION AND IDENTIFICATION OF A CELL(S), WHERE A PSC CAN BE UTILIZED AS A PHASE REFERENCE BY THE ASSOCIATED SSC.
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5.发明专利
公开(公告)号：MY149781A
公开(公告)日：2013-10-14
申请号：MYPI20052260
申请日：2005-05-18
Applicant: QUALCOMM INC
Inventor： LORENZO CASACCIA , FRANCESCO GRILLI , PRASAD MALLADI DURGA
Abstract: AN APPARATUS FOR PROVIDING A TIME DIVISION MULTIPLEXING (TDM) SCHEME FOR LINK ADAPTATION INCLUDING USE OF CHANNEL ESTIMATION AND CHANNEL QUALITY INDICATOR (CQI) MEASUREMENTS BY BUNDLING SEVERAL TIMESLOTS OF A FRAME WITHIN THE EXISTING GSM/GPRS/EDGE SYSTEM. AN ALGORITHM FOR PROVIDING ROTATION OF MS (10, 120, 125)USERS SUCH THAT EACH ONE WILL BENEFIT FROM MEASURING ALL TIMESLOTS OF THE FRAME RESULTING IN MORE RELIABLE AND ACCURATE TRANSMISSION OF INFORMATION.
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Patent Agency Ranking
公开(公告)号：MY148152A
公开(公告)日：2013-03-15
申请号：MYPI20083915
申请日：2007-04-27
Applicant: QUALCOMM INC
Inventor： JUAN MONTOJO , PRASAD MALLADI DURGA
Abstract: TECHNIQUES FOR PAGING USER EQUIPMENTS (120) IN A WIRELESS COMMUNICATION SYSTEM (100) ARE DESCRIBED. IN ONE ASPECT, A CELL SENDS A PAGING INDICATOR TO A USER EQUIPMENT, MONITORS FOR AN ACKNOWLEDGEMENT FROM THE USER EQUIPMENT, AND SENDS A PAGE MESSAGE TO THE USER EQUIPMENT IF AN ACKNOWLEDGEMENT IS RECEIVED FROM THE USER EQUIPMENT. THE CELL MAY RECEIVE CHANNEL QUALITY INFORMATION FROM THE USER EQUIPMENT AND MAY SEND THE PAGE MESSAGE WITH LINK ADAPTATION AND/OR HARQ TO IMPROVE PERFORMANCE. IN ANOTHER ASPECT, A CELL SENDS A PAGING INDICATOR ON A SHARED CONTROL CHANNEL TO A USER EQUIPMENT AND SENDS A PAGE MESSAGE ON A SHARED DATA CHANNEL TO THE USER EQUIPMENT. THE PAGING INDICATOR AND PAGE MESSAGE MAY BE SENT FROM MULTIPLE CELLS TO THE USER EQUIPMENT. ALTERNATIVELY, THE PAGING INDICATOR MAY BE SENT FROM MULTIPLE CELLS TO THE USER EQUIPMENT, AND THE PAGE MESSAGE MAY BE SENT FROM A SINGLE CELL TO THE USER EQUIPMENT.
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公开(公告)号：MY147875A
公开(公告)日：2013-01-31
申请号：MYPI20095141
申请日：2008-06-25
Applicant: QUALCOMM INC
Inventor： PRASAD MALLADI DURGA
IPC: H04L1/00
Abstract: SYSTEMS AND METHODOLOGIES ARE DESCRIBED THAT FACILITATE EMPLOYING A HYBRID TRANSMISSION STRUCTURE (500) IN A WIRELESS COMMUNICATION ENVIRONMENT. EACH TRANSPORT BLOCK (E.G., MAC PDU) CAN BE SPLIT INTO MULTIPLE CODE BLOCKS. MOREOVER, EACH OF THE CODE BLOCKS CAN BE FURTHER DIVIDED INTO TWO OR MORE CODE BLOCK SEGMENTS. FURTHER, CODE BLOCK SEGMENTS FROM A GIVEN CODE BLOCK CAN BE TRANSMITTED OVER A CHANNEL DURING DISPARATE TIME SLOTS OF A SUBFRAME. ALSO, WITHIN A GIVEN SUBFRAME, CODE BLOCK SEGMENTS CORRESPONDING TO DIFFERING CODE BLOCKS CAN BE TRANSMITTED SEQUENTIALLY IN TIME. UTILIZATION OF THE FOREGOING CAN ENABLE EMPLOYMENT OF A PIPELINED DECODER (218) STRUCTURE AT A RECEIVER (216, 802, 910) WHILE ALLOWING FOR OPTIMIZATION OF TIME/FREQUENCY DIVERSITY.
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公开(公告)号：MY146447A
公开(公告)日：2012-08-15
申请号：MYPI20091530
申请日：2007-10-30
Applicant: QUALCOMM INC
Inventor： JUAN MONTOJO , XIAOXIA ZHANG , PRASAD MALLADI DURGA
IPC: H04L1/00
Abstract: SYSTEMS AND METHODOLOGIES ARE DESCRIBED THAT FACILITATE MULTIPLEXING OF CONTROL INFORMATION AND DATA FOR COMMON TRANSMISSION IN A LOCALIZED FDM WIRELESS COMMUNICATION SYSTEM. LOCALIZED FDM TRANSMISSION OF CONTROL AND DATA CHANNELS CAN BE ACHIEVED BY, FOR EXAMPLE, MULTIPLEXING (510) CONTROL INFORMATION WITH DATA AND TRANSMITTING (512) THE CONTROL INFORMATION AND DATA USING RESOURCES AND TRANSMISSION SCHEMES SPECIFIED FOR TRANSMISSION OF THE DATA. TO ENSURE THE RELIABILITY OF CONTROL INFORMATION MULTIPLEXED WITH DATA, A POWER OFFSET CAN BE APPLIED TO THE CONTROL INFORMATION TO PROVIDE VARYING PROTECTION LEVELS FOR THE CONTROL INFORMATION BASED ON PROPERTIES OF THE DATA RESOURCES INTO WHICH IT IS EMBEDDED IN ORDER TO MAINTAIN A PREDETERMINED SIGNAL QUALITY FOR THE CONTROL INFORMATION INDEPENDENT OF THE DATA RESOURCES.
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公开(公告)号：AU2011253578A1
公开(公告)日：2011-12-15
申请号：AU2011253578
申请日：2011-11-22
Applicant: QUALCOMM INC
Inventor： PRASAD MALLADI DURGA , AVNEESH AGRAWAL , RAMASWAMY MURALI , ASHOK MANTRAVADI , ANASTASIOS STAMOULIS
Abstract: Techniques to transmit data with cyclic delay diversity and pilot staggering are described. For cyclic delay diversity, OFDM symbols having different cyclic delay durations are generated. The cyclic 5 delay durations for the OFDM symbols may be selected to be time varying with respect to the cyclic delay durations for OFDM symbols transmitted by a neighboring base station. An FDM pilot is generated and multiplexed on multiple sets of subbands in different symbol periods. Waveforms for a second radio technology (e.g., W-CDMA) may be generated for data to be transmitted with this radio technology. The OFDM symbols are multiplexed onto time slots used for OFDM, and the 10 waveforms for the second radio technology are multiplexed onto time slots used for this radio technology. One or multiple modulated signals may be generated based on the multiplexed OFDM symbols and waveforms. Each modulated signal is transmitted from a respective antenna. Start 800 Generate OFDM symbols having different cyclic delay durations Generate and multiplex an FDM pilot on multiple sets of subbands in different symbol periods Generate W-CDMA waveforms for data to be transmitted with W-CDMA Multiplex the OFDM symbols onto time slots used for OFDM Multiplex the W-CDMA waveforms onto time slots used for W-CDMA Generate one or multiple modulated signals based on the multiplexed OFDM symbols and W-CDMA waveforms '824 Transmit each modulated signal from a respective antenna End
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公开(公告)号：AU2011253562A1
公开(公告)日：2011-12-15
申请号：AU2011253562
申请日：2011-11-22
Applicant: QUALCOMM INC
Inventor： PRASAD MALLADI DURGA , AVNEESH AGRAWAL , RAMASWAMY MURALI , ASHOK MANTRAVADI , ANASTASIOS STAMOULIS
Abstract: Techniques to transmit data with cyclic delay diversity and pilot staggering are described. For cyclic delay diversity, OFDM symbols having different cyclic delay durations are generated. The cyclic 5 delay durations for the OFDM symbols may be selected to be time varying with respect to the cyclic delay durations for OFDM symbols transmitted by a neighboring base station. An FDM pilot is generated and multiplexed on multiple sets of subbands in different symbol periods. Waveforms for a second radio technology (e.g.. W-CDMA) may be generated for data to be transmitted with this radio technology. The OFDM symbols are multiplexed onto time slots used for OFDM. and the 10 waveforms for the second radio technology are multiplexed onto time slots used for this radio technology. One or multiple modulated signals may be generated based on the multiplexed OFDM symbols and waveforms. Each modulated signal is transmitted from a respective antenna. Start 800 Generate OFDM symbols having different cyclic delay durations ' 814 Generate and multiplex an FDM pilot on multiple sets of subbands in different symbol periods Generate W-CDMA waveforms for data to be transmitted with W-CDMA "818 Multiplex the OFDM symbols onto time slots used for OFDM ,820 Multiplex the W-CDMA waveforms onto time slots used for W-CDMA Generate one or multiple modulated signals based on the multiplexed OFDM symbols and W-CDMA waveforms t824 Transmit each modulated signal from a respective antenna End
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