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1. 发明授权

US11949495B2 Next generation mobile satellite service (MSS) 有权
公开(公告)号：US11949495B2
公开(公告)日：2024-04-02
申请号：US17325341
申请日：2021-05-20
申请人： Channasandra Ravishankar , James Jehong Jong , Gaguk Zakaria , Nassir Benammar
发明人： Channasandra Ravishankar , James Jehong Jong , Gaguk Zakaria , Nassir Benammar
IPC分类号： H04B7/185 , H04B7/26 , H04L47/20 , H04L47/629 , H04W4/10 , H04W28/02 , H04W72/04 , H04W72/0446 , H04W72/20
CPC分类号： H04B7/18539 , H04B7/18513 , H04B7/18519 , H04B7/2643 , H04L47/20 , H04L47/629 , H04W4/10 , H04W28/0268 , H04W72/0446 , H04W72/20
摘要： A system and method for operating a hybrid 4G satellite network. The method includes providing a NGSG including a satellite AS/NAS stack, a terrestrial 4G stack and a relay to connect the satellite AS/NAS stack and the terrestrial 4G stack; transporting a 4G traffic between a 4G UE and the NGSG using a satellite air interface; utilizing a terrestrial network between the NGSG and a 4G CN to transport the 4G traffic; and mapping, with the relay, the 4G traffic between the satellite AS/NAS stack and the terrestrial 4G stack and vice versa, where the satellite air interface is better suited for satellite communications than the terrestrial network. A system and method for multiplexing a first-generation UE and a second-generation UE on a satellite channel.

2. 发明授权

US10805850B1 Handover in connected mode between non-terrestrial-network and terrestrial network 有权
公开(公告)号：US10805850B1
公开(公告)日：2020-10-13
申请号：US16730896
申请日：2019-12-30
申请人： Nassir Benammar , Channasandra Ravishankar , Gaguk Zakaria
发明人： Nassir Benammar , Channasandra Ravishankar , Gaguk Zakaria
IPC分类号： H04W36/00 , H04W36/14 , H04W36/38 , H04M1/725 , H04W88/02 , H04W36/12 , H04W36/18
摘要： A system and a method for directing a handover of communications in Radio Frequency (RF) networks at a UT. The method includes servicing a user terminal (UT) via a first network having a first coverage area; receiving, from the UT via the first network, a measurement report for a second network having a second coverage area based on a measurement configuration of the second network; sending, to the UT via the first network, a handover order for obtaining service from the second network; and establishing, via a second network RAN (radio access network), a service for the UT via the second network per the handover order. In the method, the first network may include either a terrestrial network (TN) or a non-terrestrial network (NTN), the second network may include other of the TN or the NTN, and the TN and the NTN are RF networks. In the method, the establishing is performed while the UT is disposed in an overlap area of the first coverage area and the second coverage area, and the measurement report may include a RF signal metric of the second network at the UT.

3. 发明授权

US10631195B2 Buffer status report trigger enhancement in a long term evolution and satellite communication system 有权
公开(公告)号：US10631195B2
公开(公告)日：2020-04-21
申请号：US15722776
申请日：2017-10-02
申请人： Nassir Benammar , Channasandra Ravishankar
发明人： Nassir Benammar , Channasandra Ravishankar
IPC分类号： H04W28/02 , H04W72/12 , H04B7/185 , H04W28/12 , H04L12/861 , H04W24/08 , H04W72/04 , H04W72/14
CPC分类号： H04W28/0278 , H04B7/18584 , H04W28/12 , H04W72/1215 , H04W72/1242 , H04W72/1284 , H04L49/90 , H04W24/08 , H04W72/0413 , H04W72/1252 , H04W72/14
摘要： A method for reporting backlog in a LTE-like environment is disclosed. The method includes: providing a pending allocation for transferring a pending request data; receiving a new request for transferring data prior to completion of transferring the pending request data; generating a backlog report for the new request; sending the backlog report within the pending allocation; and receiving a new allocation for the new request data.

4. 发明授权

US11778508B2 Backward compatible physical layer and signaling for satellite communication 有权
公开(公告)号：US11778508B2
公开(公告)日：2023-10-03
申请号：US17182899
申请日：2021-02-23
申请人： James J. Jong , Channasandra Ravishankar , William Whitmarsh , Nassir Benammar , Santharam Gurumani , Pablo Valle , Jianxia Luo
发明人： James J. Jong , Channasandra Ravishankar , William Whitmarsh , Nassir Benammar , Santharam Gurumani , Pablo Valle , Jianxia Luo
IPC分类号： H04W28/04 , H04W80/02 , H04L1/00 , H04W92/10
CPC分类号： H04W28/04 , H04L1/0005 , H04L1/0061 , H04W80/02 , H04W92/10
摘要： A method for communicating with a legacy terminal supporting a legacy air interface and a new terminal supporting a next generation air interface including: assigning a same carrier to the legacy terminal and the new terminal; receiving a terminal identifier and an optional payload for transmission at a MAC/RLC layer; determining if the terminal identifier is associated with the legacy terminal or the new terminal; composing, based on the determining, a burst header; formatting, a burst including the burst header and the optional payload; and transmitting the burst. In the method, the burst header is set to one of the one or more valid burst headers when the burst is associated with the legacy terminal, and the burst header is set to one of the one or more undefined burst headers when the burst is associated with the new terminal.

5. 发明申请

US20130217422A1 SYSTEM AND METHOD FOR ENHANCED PAGING AND QUALITY OF SERVICE ESTABLISHMENT IN MOBILE SATELLITE SYSTEMS 审中-公开
标题翻译：移动卫星系统中增强呼叫和服务质量的系统和方法
公开(公告)号：US20130217422A1
公开(公告)日：2013-08-22
申请号：US13398763
申请日：2012-02-16
申请人： Gaguk Zakaria , Channasandra Ravishankar
发明人： Gaguk Zakaria , Channasandra Ravishankar
IPC分类号： H04W68/00
CPC分类号： H04B7/18539 , H04B7/18543 , H04B7/18567 , H04W68/025 , H04W76/12
摘要： A system and method is provided to enable enhanced paging for 3GPP IMS based Mobile Satellite Communication is presented. The method is achieved by utilizing the network requested secondary PDP context activation (NRSPCA) features of 3GPP release 7. NRSPCA involves interaction between P-CSCF, GGSN, and SGSN that eventually allows SGSN to identify the traffic type of the incoming call without looking at the compressed SIP messages. RAN can do enhanced paging, if necessary; based on the request secondary PDP context activation message, if the Paging Cause is indicating conversational class. In another embodiment, enhanced paging can be achieved by marking the packet with an appropriate DSCP code, which is done by the P-CSCF. SGSN can populate the paging cause with enhanced paging code based on the DSCP code provided or RAN can escalate paging to enhanced paging by examining the DSCP code.
摘要翻译：提供了一种系统和方法，以提供用于3GPP IMS的移动卫星通信的增强寻呼。该方法通过利用3GPP版本7的网络请求的辅助PDP上下文激活（NRSPCA）特征来实现.NRSPCA涉及P-CSCF，GGSN和SGSN之间的交互，其最终允许SGSN识别来电的业务类型而不查看压缩的SIP消息。如果需要，RAN可以进行增强的寻呼; 根据请求次PDP上下文激活消息，如果分页原因指示会话类。在另一个实施例中，可以通过用由P-CSCF完成的适当的DSCP代码来标记分组来实现增强的寻呼。 SGSN可以基于提供的DSCP代码来填充寻呼原因，RAN可以通过检查DSCP码将寻呼升级到增强寻呼。

6. 发明授权

US10840999B2 System and method for networked scheduling for improved spectral efficiency 有权
公开(公告)号：US10840999B2
公开(公告)日：2020-11-17
申请号：US15832981
申请日：2017-12-06
申请人： Channasandra Ravishankar , Xiaoling Huang , Nassir Benammar , Rajeev Gopal , John Corrigan
发明人： Channasandra Ravishankar , Xiaoling Huang , Nassir Benammar , Rajeev Gopal , John Corrigan
IPC分类号： H04L27/28 , H04B7/185 , H04L29/06 , H04W52/26 , H04W84/06 , H04W72/08 , H04W72/12 , H04W52/34
CPC分类号： H04B7/18519 , H04B7/18517 , H04B7/18526 , H04B7/18584 , H04L29/06224 , H04W52/262 , H04W52/346 , H04W72/085 , H04W72/1231 , H04W84/06
摘要： A method for networked scheduling is disclosed. The method includes: providing a gateway; a plurality of channels assigned to a color reuse scheme including colors, wherein some of the plurality of channels assigned to one of the colors comprise a set of co-channels; associating the set of co-channels with the gateway; generating a traffic pattern for the set of co-channels for an upcoming allocation slot; determining a channel state of each co-channel in the set of co-channels per the traffic pattern; and setting a Modulation and Coding scheme (MODCOD) of each co-channel in the set of co-channels based on the respective channel state.

7. 发明授权

US10321356B2 System and method for performing retransmission of a packet 有权
公开(公告)号：US10321356B2
公开(公告)日：2019-06-11
申请号：US15722827
申请日：2017-10-02
申请人： Nassir Benammar , Channasandra Ravishankar
发明人： Nassir Benammar , Channasandra Ravishankar
IPC分类号： H04W28/02 , H04W28/04 , H04L1/18 , H04L1/00
摘要： A method for reducing retransmission of packets by a sender is disclosed. The method includes: providing a network comprising a physical layer, a medium access control (MAC) layer and an Radio Link Control (RLC) layer; providing a retransmission packet in the physical layer, wherein the retransmission packet comprises a flow having a reordering feature in the RLC layer; enabling Hybrid Automatic Repeat reQuest (HARQ) in the physical layer and the MAC layer; receiving a HARQ request for a retransmission; and transmitting a new packet with the physical layer in response to the HARQ request, when the reordering feature for the flow in the retransmission packet is disabled.

8. 发明授权

US11223666B2 Method and system of providing second generation (2G) voice services over Internet protocol 有权
公开(公告)号：US11223666B2
公开(公告)日：2022-01-11
申请号：US16694106
申请日：2019-11-25
申请人： Channasandra Ravishankar , Gaguk Zakaria
发明人： Channasandra Ravishankar , Gaguk Zakaria
IPC分类号： H04L29/06 , H04W84/06 , H04W88/16 , H04W92/14 , H04W92/06 , H04W92/02 , H04L12/66
摘要： A system to provide second generation (2G) voice services over internet protocol, the system including: a voice gateway (VGW) including a 2G stack to communicate control plane information and user plane information with a 2G user terminal (UT) via a circuit-switched network without modifications to the 2G-UT, an Iu-CS IP stack, and a relay to map the control plane information between the 2G stack and the Iu-CS IP stack, and vice-versa; a mobile switching center (MSC), connected to the VGW via the Iu-CS IP stack, to manage and establish the voice services between the 2G-UT and a public switched telephone network (PSTN) based on the mapped control plane information; and a media gateway (MGW) connected to the VGW via the Iu-CS IP stack, where the MGW communicates the user plane information between the 2G-UT and the PSTN after the MSC 2-G UT vocoder, e.g. AMBE, has established voice services.

9. 发明授权

US10826596B2 Placement of calibration earth stations for ground based beam forming in a satellite system 有权
公开(公告)号：US10826596B2
公开(公告)日：2020-11-03
申请号：US15902784
申请日：2018-02-22
申请人： Yash Vasavada , Channasandra Ravishankar , John Corrigan , Gaguk Zakaria , Xiaoling Huang
发明人： Yash Vasavada , Channasandra Ravishankar , John Corrigan , Gaguk Zakaria , Xiaoling Huang
IPC分类号： H04B7/185 , H04B7/204 , H01Q25/00
摘要： A system and method for estimating calibration parameters and locating a Calibration Earth Station (CES) is described. The method may be performed offline. The method includes: providing L×M pilot signal measurements in a matrix R from L CESs and the M feed elements, wherein the matrix R comprises a set of channel coefficients c={c1, c2, . . . , cM}, and k={k1, k2, . . . , kL} perturbations; linking a subset of channel coefficients {c1, c2, . . . , cM} using each of the L CESs; and estimating a relative estimate of the k={k1, k2, . . . , kL} pertubations across the L CESs by using each of the L CESs as a bridging element. In the method, the bridging element provides a strong pilot signal for at least two of the L CESs. A set of criteria for determining locations of CESs have been described. A set of desirable properties for the solution set of L CESs have been disclosed. A combination of inner loop and outer loop methods for determining the final set of optimal locations have been described.

10. 发明授权

US11632194B2 System and method for satellite communication in a helicopter 有权
公开(公告)号：US11632194B2
公开(公告)日：2023-04-18
申请号：US17370936
申请日：2021-07-08
申请人： James Jehong Jong , Channasandra Ravishankar , William Whitmarsh
发明人： James Jehong Jong , Channasandra Ravishankar , William Whitmarsh
IPC分类号： H04L1/18 , H04L1/00 , H04L5/00 , H04L25/03 , H04L1/1812
摘要： A receiver and a method for receiving a radio communication is disclosed. The method includes receiving a burst encoded with a robust modulation coding scheme (MCS) as RX signals; generating, for each of the RX signals, a burst SNR, soft decision symbols and a packet; weighing, each of soft decision symbols with a respective burst SNR, to calculate soft combined symbols that are used to generate a Maximal-Ratio Combining (MRC) packet; and selecting, from the packets and the MRC packet, a CRC passed packet as an output. An adaptive dual burst transmitter is disclosed.

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