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81. 发明授权

US11929820B2 Frequency adjustment for non-terrestrial networks 有权
公开(公告)号：US11929820B2
公开(公告)日：2024-03-12
申请号：US17636009
申请日：2020-08-12
申请人： TELEFONAKTIEBOLAGET LM ERICSSON (PUBL)
发明人： Talha Khan , Olof Liberg , Stefan Eriksson Löwenmark , Xingqin Lin
IPC分类号： H04B7/185 , H04W56/00
CPC分类号： H04B7/1855 , H04W56/0035 , H04W56/0045
摘要： Systems and methods are disclosed herein for frequency adjustment in a wireless network, particularly a Non-Terrestrial Network (NTN). Embodiments of a method performed by a User Equipment (UE) are disclosed. In one embodiment, a method performed by a UE for compensating for a Doppler shift in a wireless network comprises obtaining, from a network node, a characterization of Doppler variations in a particular cell. The method further comprises tuning a local frequency reference fRef, of the UE to a received downlink frequency for the particular cell and adjusting the local frequency reference fRef, over time according to the pre-calculated characterization of Doppler variations in the particular cell. In this manner, the communication between the UE and the network node in the presence of large and varying Doppler shifts is enabled. Embodiments related to compensating for timing drift are also disclosed.

82. 发明公开

US20230370161A1 DYNAMIC ON-DEMAND CONNECTIVITY TO ADVANCED COMMUNICATION NETWORKS VIA SATELLITE 审中-公开
公开(公告)号：US20230370161A1
公开(公告)日：2023-11-16
申请号：US17663545
申请日：2022-05-16
申请人： AT&T Intellectual Property I, L.P.
发明人： Greg Orehostky , Antonio Riccione , Kevin Jacob
IPC分类号： H04B7/185
CPC分类号： H04B7/18526 , H04B7/18584 , H04B7/1855
摘要： Dynamic, on-demand connectivity via satellite is enabled for advanced communication networks, such as, but not limited to, fifth generation (5G) communication networks and beyond. For instance, a system comprises radio equipment part of a new radio (NR) communication network that facilitates communication of data traffic between a communication device and core equipment of the NR communication network via satellite communication equipment part of a satellite communication network, wherein the radio equipment facilitates the communication using a NR communication protocol defined for the NR communication network. In one or more embodiments, the NR network comprises a 5G network and wherein the NR communication protocol comprises a 5G communication protocol.

83. 发明授权

US11764867B2 Communication of satellite information for non-terrestrial networks 有权
公开(公告)号：US11764867B2
公开(公告)日：2023-09-19
申请号：US17154497
申请日：2021-01-21
申请人： QUALCOMM Incorporated
发明人： Iyab Issam Sakhnini , Jun Ma , Qiang Wu , Xiao Feng Wang , Dan Zhang , Huilin Xu
IPC分类号： H04B7/185 , H04W52/14 , H04W68/00 , H04B7/06 , H04W72/23
CPC分类号： H04B7/18543 , H04B7/0617 , H04B7/1855 , H04B7/18519 , H04W52/143 , H04W68/005 , H04W72/23
摘要： This disclosure provides systems, methods and apparatus for communicating a satellite behavior change. In one aspect, a satellite identifies a satellite behavior change to occur for the satellite of a non-terrestrial network for cellular communications. The apparatus also signals the satellite behavior change to a user equipment serviced by the satellite. In another aspect, a user equipment obtains, from a satellite servicing the user equipment, a signaling of a satellite behavior change to occur for the satellite. The user equipment also adjusts one or more user equipment parameters for cellular communication based on the obtained signaling. The satellite behavior change may include a satellite attitude or a transmit power or coverage area of one or more satellite beams. The user equipment parameters may include satellite or beam selection or reselection to listen to paging information, satellite or beam handover parameters, or transmit power control parameters.

84. 发明授权

US09136937B1 System and method for providing antenna diversity in multiple sub-carrier communication systems 有权
标题翻译：用于在多个子载波通信系统中提供天线分集的系统和方法
公开(公告)号：US09136937B1
公开(公告)日：2015-09-15
申请号：US12706141
申请日：2010-02-16
申请人： Hao-Ren Cheng , William J. McFarland
发明人： Hao-Ren Cheng , William J. McFarland
IPC分类号： H03K9/00 , H03D3/00 , H04B1/44 , H04B7/185 , H04B7/06 , H04B7/08
CPC分类号： H04B7/18545 , H04B7/01 , H04B7/0602 , H04B7/0802 , H04B7/0805 , H04B7/0811 , H04B7/1855
摘要： A system and method to provide antenna diversity by switching between antenna feeds to optimize signal quality. Antenna conditions are determined during an OFDM guard interval to minimize disruption of symbol transmission. When the signal quality assessment determines that an improved signal is available on an alternative antenna, an antenna change is performed to switch to the alternative antenna, also during a GI, again minimizing disruption in information transmission. Preferably, the process is continually applied, so that antenna conditions are monitored for changing conditions and the antenna experiencing the best signal is selected.
摘要翻译：通过在天线馈线之间切换来提供天线分集以优化信号质量的系统和方法。在OFDM保护间隔期间确定天线条件以最小化符号传输的中断。当信号质量评估确定改进的信号在替代天线上可用时，执行天线改变以在GI期间切换到替代天线，同时最小化信息传输的中断。优选地，该过程被连续地应用，使得监视天线条件以改变条件，并且选择经历最佳信号的天线。

85. 发明授权

US09121938B2 Communication apparatus 有权
标题翻译：通讯设备
公开(公告)号：US09121938B2
公开(公告)日：2015-09-01
申请号：US14073391
申请日：2013-11-06
申请人： Sony Corporation
发明人： Suguru Houchi
IPC分类号： G01S19/29 , H04B7/185
CPC分类号： G01S19/29 , H04B7/1855
摘要： A communication apparatus includes a Doppler shift amount calculation unit configured to calculate a Doppler shift amount of a reception signal which is obtained by modulating a signal, for which spectrum spreading is performed by using a predetermined spread code, by a predetermined carrier frequency, a frequency shift amount setting unit configured to set a frequency shift amount on the basis of the Doppler shift amount, a frequency conversion unit configured to shift the frequency of the reception signal by the frequency shift amount, a coherent addition unit configured to perform coherent addition of the reception signal, a spread code generation unit configured to generate a spread code, and a phase detection unit configured to perform correlation calculation between a calculation result of the coherent addition and the spread code and detect a phase of the spread code of the reception signal on the basis of the correlation calculation result.
摘要翻译：通信装置包括：多普勒频移量计算单元，被配置为计算通过使用预定扩频码对预定载波频率进行频谱扩展的信号进行调制而得到的接收信号的多普勒频移量，频率移位量设定单元，被配置为基于多普勒频移量设定频移量;频率转换单元，被配置为将接收信号的频率移位频移量;相干相加单元，被配置为执行所述多普勒频移量的相干相加; 接收信号，被配置为生成扩展码的扩展码生成单元，以及相位检测单元，被配置为在相干相加的计算结果与扩展码之间进行相关运算，并检测接收信号的扩展码的相位相关计算结果的基础。

86. 发明申请

US20140168011A1 COMMUNICATION APPARATUS 有权
标题翻译：通讯设备
公开(公告)号：US20140168011A1
公开(公告)日：2014-06-19
申请号：US14073391
申请日：2013-11-06
申请人： Sony Corporation
发明人： Suguru Houchi
IPC分类号： G01S19/38
CPC分类号： G01S19/29 , H04B7/1855
摘要： A communication apparatus includes a Doppler shift amount calculation unit configured to calculate a Doppler shift amount of a reception signal which is obtained by modulating a signal, for which spectrum spreading is performed by using a predetermined spread code, by a predetermined carrier frequency, a frequency shift amount setting unit configured to set a frequency shift amount on the basis of the Doppler shift amount, a frequency conversion unit configured to shift the frequency of the reception signal by the frequency shift amount, a coherent addition unit configured to perform coherent addition of the reception signal, a spread code generation unit configured to generate a spread code, and a phase detection unit configured to perform correlation calculation between a calculation result of the coherent addition and the spread code and detect a phase of the spread code of the reception signal on the basis of the correlation calculation result.
摘要翻译：通信装置包括：多普勒频移量计算单元，被配置为计算通过使用预定扩频码对预定载波频率进行频谱扩展的信号进行调制而得到的接收信号的多普勒频移量，频率移位量设定单元，被配置为基于多普勒频移量设定频移量;频率转换单元，被配置为将接收信号的频率移位频移量;相干相加单元，被配置为执行所述多普勒频移量的相干相加; 接收信号，被配置为生成扩展码的扩展码生成单元，以及相位检测单元，被配置为在相干相加的计算结果与扩展码之间进行相关运算，并检测接收信号的扩展码的相位相关计算结果的基础。

87. 发明申请

US20060246913A1 Method for handling propagation delay in a wireless communication system 审中-公开
公开(公告)号：US20060246913A1
公开(公告)日：2006-11-02
申请号：US11115169
申请日：2005-04-27
申请人： Lawrence Merboth , Paul Polakos , Stephen Wilkus , Henry Ye , Lily Zhu
发明人： Lawrence Merboth , Paul Polakos , Stephen Wilkus , Henry Ye , Lily Zhu
IPC分类号： H04Q7/20 , H04M1/00
CPC分类号： H04B7/1855 , H04B7/216 , H04W56/0065
摘要： In one embodiment of the method, a base station is configured to divide a coverage area of the base station into sub-coverage areas. Each sub-coverage area has a smaller range of round trip propagation delays than a range of round trip propagation delays for the coverage area of the base station. Each sub-coverage area may have a different range of round trip propagation delays.

88. 发明授权

US07092725B2 Aiding beam identification in a satellite system 有权
公开(公告)号：US07092725B2
公开(公告)日：2006-08-15
申请号：US10278502
申请日：2002-10-22
申请人： Jon J. Anderson , Jin Dai , Francis M. Ngai , Edward B. Victor
发明人： Jon J. Anderson , Jin Dai , Francis M. Ngai , Edward B. Victor
IPC分类号： H04Q7/20
CPC分类号： H04B7/1855
摘要： A system and method for determining timing offset errors in a low earth orbit satellite system based upon Doppler and Doppler rate of change is provided. A user terminal determines first and second timing offsets respectively associated with first and second satellite beams from respective first and second satellites. Next, the user terminal determines the Doppler and Doppler rate of change associated with the first and second satellite beams. A timing offset is estimated from the measured Doppler and Doppler rate of change and is then compared with the user terminal's own determined timing offset. If the comparison does not produce a value within a predetermined threshold, a beam identification error is declared.

89. 发明申请

US20050136930A1 Dual-mode methods, systems, and terminals providing reduced mobile terminal registrations 审中-公开
公开(公告)号：US20050136930A1
公开(公告)日：2005-06-23
申请号：US11043815
申请日：2005-01-26
申请人： Paul Dent
发明人： Paul Dent
IPC分类号： H04B7/185 , H04W8/02 , H04W8/06 , H04W48/18 , H04W60/00 , H04W60/04 , H04W68/00 , H04W68/08 , H04W68/12 , H04W76/04 , H04W84/06 , H04W88/06 , H04W92/02 , H04Q7/20
CPC分类号： H04W68/08 , H04B7/18545 , H04B7/1855 , H04B7/18563 , H04W8/02 , H04W8/06 , H04W48/18 , H04W60/00 , H04W60/04 , H04W68/00 , H04W68/12 , H04W76/20 , H04W84/06 , H04W88/06 , H04W92/02
摘要： A method of operating a mobile terminal providing wireless communications can include receiving communications service from a first communications network providing service over a first coverage area. While receiving communications service from the first communications network, a first identity code can be received from a second communications network providing service over a plurality of second coverage areas wherein a first one of the second coverage areas includes the first coverage area and wherein the first identity code from the second communications network identifies availability of service with the second communications network in the first one of the second coverage areas. After loss of communications with the first communications network, a second identity code can be received from the second communications network. When the second identity code from the second communications network is different than the first identity code from the second communications network, a registration can be performed with the second communications network so that communications service can be received by the mobile terminal from the second communications network in a second one of the second coverage areas corresponding to the second identity code from the second communications network.

90. 发明授权

US06816705B1 Satellite communication system and method 失效
标题翻译：卫星通信系统及方法
公开(公告)号：US06816705B1
公开(公告)日：2004-11-09
申请号：US08990804
申请日：1997-12-15
申请人： Philip Hon Nghia Quan , Richard Wyrwas
发明人： Philip Hon Nghia Quan , Richard Wyrwas
IPC分类号： H04B7185
CPC分类号： G01S5/12 , H04B7/1855
摘要： A satellite communications system and method, where a satellite 10 can pass messages between a user terminal 44 and an earth station 38, as the satellite moves in an orbit 12 12′ as indicated by arrow 46, comprises means for measuring the position of the user terminal 44, on the surface of the earth 14, relative to the nadir 50, by means of doppler shift measurements and propagation delay measurements between the satellite 10 and the user terminal 44. Where more than one satellite 10 is visible to the user terminal 44, combination means are employed using propagation delays to plural satellites 10, and/or recordal of the receipt times, by the user terminal 44, of timed broadcasts from one or more satellites 10 to determine the propagation delay between the one or more satellites 10 and the user terminal 44.
摘要翻译：一种卫星通信系统和方法，其中卫星10可以在用户终端44和地球站38之间传递消息，因为随着卫星在如箭头46所示的轨道12 12'中移动，包括用于测量用户的位置的装置终端44通过多普勒频移测量和卫星10与用户终端44之间的传播延迟测量，相对于最低点50在地球表面14上。在多于一个的卫星10对于用户终端44是可见的使用组合装置，使用多个卫星10的传播延迟和/或用户终端44记录来自一个或多个卫星10的定时广播的接收时间，以确定一个或多个卫星10和用户终端44。

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