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

IPC: H04W16/14 ,  H04L5/00

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.

公开(公告)号：PH12015500357B1

公开(公告)日：2015-09-07

申请号：PH12015500357

申请日：2015-02-18

Applicant: QUALCOMM INC

Inventor： ALAN BARBIERI ,  TINGFANG JI ,  ARUN AGASHE PARAG ,  YONGBIN WEI ,  TAESANG YOO ,  TAO LUO ,  SRINIVASAN JAPEYAM MADHAVAN ,  HAO XU ,  ALEKSANDAR DAMNJANOVIC

IPC: H04L1/00 ,  H04W28/06 ,  H04W28/26 ,  H04W48/08 ,  H04W72/12

Abstract: Techniques for estimating and reporting channel quality indicator (CQI) are disclosed. Neighboring base stations may cause strong interference to one another and may be allocated different resources, e.g., different subframes. A UE may observe different levels of interference on different resources. In an aspect, the UE may determine a CQI for resources allocated to a base station and having reduced or no interference from at least one interfering base station. In another aspect, the UE may determine multiple CQI for resources of different types and associated with different interference levels. For example, the UE may determine a first CQI based on at least one first subframe allocated to the base station and having reduced or no interference from the interfering base station(s). The UE may determine a second CQI based on at least one second subframe allocated to the interfering base station(s).

公开(公告)号：PH12013502085A1

公开(公告)日：2015-05-25

申请号：PH12013502085

申请日：2013-10-08

Applicant: QUALCOMM INC

Inventor： TAO LUO

IPC: H04L25/02 ,  H04L5/00

Abstract: Methods and apparatus for coordination of sending reference signals in wireless network are disclosed. A network node may select a cell ID based on a measurement of adjacent cells so as to mitigate interference. A network node may communicate information to another network node to control transmitted resources in a protected interval so as to measure channel characteristics.

公开(公告)号：PH12014500742A1

公开(公告)日：2015-05-18

申请号：PH12014500742

申请日：2014-04-03

Applicant: QUALCOMM INC

Inventor： TAO LUO

IPC: H04L25/02 ,  H04L5/00

Abstract: Methods and apparatus for coordination of sending reference signals in wireless network are disclosed. A network node may select a cell ID based on a measurement of adjacent cells so as to mitigate interference. A network node may communicate information to another network node to control transmitted resources in a protected interval so as to measure channel characteristics.

公开(公告)号：MY153806A

公开(公告)日：2015-03-31

申请号：MYPI20101163

申请日：2008-10-08

Applicant: QUALCOMM INC

Inventor： TAO LUO ,  KANNU ARUN P ,  KE LIU ,  PETER GAAL

IPC: H04J13/10

Abstract: SYSTEMS AND METHODOLOGIES ARE DESCRIBED THAT FACILITATE EMPLOYING A SCRAMBLING CODE (204) FROM A SET OF SCRAMBLING CODES (204), WHICH IS INDEXED BY PRIMARY SYNCHRONIZATION CODES (PSCS)(1004), TO SCRAMBLE OR DESCRAMBLE A SECONDARY SYNCHRONIZATION CODE (SSC)(202). THE SCRAMBLING CODES (204) IN THE SET CAN BE DESIGNED TO OPTIMIZE PEAK-TO-AVERAGE POWER RATIOS AND/OR MITIGATE CROSS CORRELATION. FOR EXAMPLE, THE SCRAMBLING CODES (204) CAN BE BASED ON DIFFERENT M-SEQUENCES GENERATED FROM DISPARATE POLYNOMIALS. IN ACCORDANCE WITH ANOTHER EXAMPLE, THE SCRAMBLING CODES (204) CAN BE BASED ON DIFFERENT CYCLIC SHIFTS OF THE SAME M­ SEQUENCE. ACCORDING TO ANOTHER EXAMPLE, THE SCRAMBLING CODES (204) CAN BE BASED UPON BINARY APPROXIMATIONS OF POSSIBLE PRIMARY SYNCHRONIZATION CODES (1004) UTILIZED IN A WIRELESS COMMUNICATION ENVIRONMENT. PURSUANT TO A FURTHER EXAMPLE, THE SCRAMBLING CODES (204) CAN BE BASED ON DIFFERENT GOLAY COMPLEMENTARY SEQUENCES.

公开(公告)号：MY153285A

公开(公告)日：2015-01-29

申请号：MYPI2011004010

申请日：2010-03-16

Applicant: QUALCOMM INC

Inventor： WANSHI CHEN ,  TAO LUO ,  XIAOXIA ZHANG ,  JUAN MONTOJO

IPC: H04W28/16

Abstract: TECHNIQUES FOR HANDLING INCONSISTENT CONTROL INFORMATION IN A WIRELESS COMMUNICATION SYSTEM ARE DESCRIBED. IN AN ASPECT, INCONSISTENT CONTROL INFORMATION IS HANDLED IN DIFFERENT MANNERS FOR THE DOWNLINK AND UPLINK. IN ONE DESIGN, A USER EQUIPMENT (UE) (120) RECEIVES A FIRST GRANT WITH FIRST CONTROL INFORMATION FOR A FIRST DATA TRANSMISSION AND ALSO RECEIVES A SECOND GRANT WITH SECOND CONTROL INFORMATION FOR A SECOND DATA TRANSMISSION. THE UE DETERMINES THAT THE SECOND CONTROL INFORMATION IS INCONSISTENT WITH THE FIRST CONTROL INFORMATION, E.G., DUE TO THE TWO GRANTS CONVEYING DIFFERENT TRANSPORT BLOCK SIZES. THE UE DETERMINES WHETHER TO RETAIN OR DISCARD THE SECOND GRANT BASED ON WHETHER THE TWO GRANTS ARE FOR DATA TRANSMISSIONS ON THE DOWNLINK OR UPLINK. IN ONE DESIGN, THE UE RETAINS THE SECOND GRANT IF THE TWO GRANTS ARE FOR DATA TRANSMISSIONS ON THE DOWNLINK AND DISCARDS THE SECOND GRANT IF THE TWO GRANTS ARE FOR DATA TRANSMISSIONS ON THE UPLINK.

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.

公开(公告)号：MY148707A

公开(公告)日：2013-05-31

申请号：MYPI20094440

申请日：2008-05-02

Applicant: QUALCOMM INC

Inventor： PETER GAAL ,  BYOUNG-HOON KIM ,  KE LIU ,  TAO LUO

IPC: H04L27/26

Abstract: DEVICES AND METHODS ARE PROVIDED TO GENERATE A SET OF SYNCRONIZATION CHANNEL SEQUENCES THAT ARE ROBUST WITH RESPECT TO SYSTEMATIC ERRORS OF TIME OFFSETS AND PROVIDE OPTIMAL FREQUENCY OFFSET ESTIMATION. A SET OF ROOT INDICES OF ZADOFF-CHU SEQUENCES THAT OPTIMIZE A PERFORMANCE METRIC (410,460) OR MERIT FACTOR IN FIRST DOMAIN (E.G TIME DOMAIN) AND IN A RECIPROCAL DOMAIN (E.G. FREQUENCY DOMAIN) ARE IDENTIFIED. OPTIMAL INDICES SATISFY A CENTRO-SYMMETRIC RELATIONSHIP WITH RESPECT TO HALF-VALUE OF SEQUENCE LENGTH: WHEN e IS AN OPTIMAL INDEX, N-e IS ALSO AH OPTIMAL ROOT INDEX, FOR SEQUENCES OF LENGTH Q² =N, A BASE SEQUENCE GENERATED WITH AN OPTIMAL SEQUENCE CAN BE UTILIZED TO GENERATE AT LEAST TWO OTHER FURTHER OPTIMAL SEQUENCES THROUGH SIGN-FLIP, CONJUGATION, AND PERIODIC MODULATION OPERATIONS. BASE SEQUENCES CAN BE ASSIGNED TO DIFFERENT SECTORS OF A BASE STATION(110).

公开(公告)号：HK1154136A1

公开(公告)日：2012-04-13

申请号：HK11108142

申请日：2011-08-04

Applicant: QUALCOMM INC

Inventor： JUAN MONTOJO J ,  TAO LUO ,  XIAOXIA ZHANG

IPC: H04L20060101 ,  H04W20090101

公开(公告)号：SA521421414B1

公开(公告)日：2024-01-15

申请号：SA521421414

申请日：2021-03-02

Applicant: QUALCOMM INC

Inventor： TAO LUO ,  XIAOXIA ZHANG ,  KAUSHIK CHAKRABORTY ,  JING SUN

Abstract: يتموصفطرقوأنظمةوأجهزةلاستخدامقناةتحكمماديةفيوصلةهابطة (PDCCH) مشتركةللإشارةإلىحزمالإرسالالمراداستخدامهابواسطةمحطةقاعديةخلالفرصةإرسالأودوريةلمراقبةمساحاتالبحث. يمكنلمعدةمستخدم (UE) أنتراقبمساحةبحث (فيبعضالحالات،باستخدامدورية) لـ PDCCH المشتركةلتحديدماإذاكانيجباستخدامحزمالإرسالالمرتبطةبـ UE أثناءفرصةالإرسال. إذاكانالأمركذلك،فيمكنأنتنشط UE خلالجزءعلىالأقلمنفرصةالإرساللتلقيمعلوماتإضافية. إذاكانت PDCCH المشتركةتشيرإلىأنهلايجباستخدامحزمالإرسالالمرتبطةبـ UE أثناءفرصةالإرسال،فيمكنلـ UE الدخولأوإعادةالدخولإلىحالةالسكون. يمكنأنتتحول UE إلىدوريةجديدةلمراقبةمساحةالبحثبناءًعلىالمعلوماتالمرسلةداخل PDCCH المشتركة. شكل 3.