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公开(公告)号：US10448285B2
公开(公告)日：2019-10-15
申请号：US15073788
申请日：2016-03-18
申请人： Mohammadhadi Baligh , Jianglei Ma , Alireza Bayesteh , Usa Vilaipornsawai , Yicheng Lin , Keyvan Zarifi
发明人： Mohammadhadi Baligh , Jianglei Ma , Alireza Bayesteh , Usa Vilaipornsawai , Yicheng Lin , Keyvan Zarifi
摘要： User Equipment (UE) mobility in Ultra Dense Networks (UDNs) is based on communication signal layers, which could include respective data streams in an Orthogonal Frequency Division Multiplexing (OFDM) domain, a code domain using respective codebooks, and/or a spatial domain, for example. A UE uses candidate layer decoding parameters in applying layer-based decoding to communication signals that it received from network nodes. Layers could be allocated to UEs and transition between network nodes as UEs move between different network service areas. Layers could instead be allocated to network nodes. Layer-based decoding provides for UE mobility without requiring explicit handover processing every time a UE moves between different service areas.
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公开(公告)号：US11178580B2
公开(公告)日：2021-11-16
申请号：US16557089
申请日：2019-08-30
申请人： Mohammadhadi Baligh , Jianglei Ma , Alireza Bayesteh , Usa Vilaipornsawai , Yicheng Lin , Keyvan Zarifi
发明人： Mohammadhadi Baligh , Jianglei Ma , Alireza Bayesteh , Usa Vilaipornsawai , Yicheng Lin , Keyvan Zarifi
IPC分类号： H04W36/00 , H04L5/00 , H04B7/0417
摘要： User Equipment (UE) mobility in Ultra Dense Networks (UDNs) is based on communication signal layers, which could include respective data streams in an Orthogonal Frequency Division Multiplexing (OFDM) domain, a code domain using respective codebooks, and/or a spatial domain, for example. A UE uses candidate layer decoding parameters in applying layer-based decoding to communication signals that it received from network nodes. Layers could be allocated to UEs and transition between network nodes as UEs move between different network service areas. Layers could instead be allocated to network nodes. Layer-based decoding provides for UE mobility without requiring explicit handover processing every time a UE moves between different service areas.
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公开(公告)号：US10517082B2
公开(公告)日：2019-12-24
申请号：US15181971
申请日：2016-06-14
IPC分类号： H04W4/00 , H04W72/04 , H04L1/08 , H04L1/18 , H04L27/26 , H04B7/024 , H04B7/0452 , H04B7/06 , H04L5/00 , H04W72/12 , H04W52/34 , H04L1/00
摘要： Embodiments of the present disclosure provide mechanisms for the following procedures: network signaling for user equipment (UE) measurements; UE measurements; UE feedback; feedback adjustment at network nodes; scheduling; Acknowledgements/Negative Acknowledgements; and network-wide planning. Some or all of these mechanisms can be used in implementing distributed open-loop multi-user co-operative multi-point (MU-CoMP) technology as well as other non-CoMP, one-tier or centralized wireless transmission technologies. The mechanisms are in line with proposed no-cell technology for 5G communication networks.
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公开(公告)号：US10652851B2
公开(公告)日：2020-05-12
申请号：US15789650
申请日：2017-10-20
摘要： Methods and devices for uplink-based User Equipment (UE) tracking for UEs operating in a connected inactive operating state are provided. A transmit-receive point (TRP) transmits parameters to a UE that allow the UE to uniquely determine a UE-specific tracking sequence and assigned time-frequency (TF) resource that are independent of a TRP identifier associated with the TRP. The UE determines the UE-specific tracking sequence and assigned TF resource based at least in part on the parameters received from the TRP. While in the connected inactive operating state, the UE transmits a tracking signal that includes the UE-specific tracking sequence in accordance with the assigned TF resource. The TRP receives the tracking signal from the UE, detects the UE in accordance with the UE-specific tracking sequence to produce a UE detection status, and transmits a tracking response to the UE in accordance with the UE detection status.
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公开(公告)号：US10530622B2
公开(公告)日：2020-01-07
申请号：US15801177
申请日：2017-11-01
摘要： Methods and devices for configurable sequence usage for user equipment (UE) uplink reference signaling are provided. In one provided method, a transmission reception point (TRP) in a wireless communication network receives a first UL reference signal (RS) associated with a first UL RS sequence from a first UE and receives a second UL RS associated with a second UL RS sequence from a second UE, the first and second UL RS sequences being non-orthogonal. In another provided method, A UE determines an UL RS sequence based on a UL RS sequence root, the UL RS sequence root being a UE-specific root and being independent of a cell identifier of a cell serving the UE. The UE sends an UL RS associated with the UL RS sequence, the UL RS sequence being a Zadoff-Chu sequence.
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公开(公告)号：US10491439B2
公开(公告)日：2019-11-26
申请号：US15801177
申请日：2017-11-01
摘要： Methods and devices for configurable sequence usage for user equipment (UE) uplink reference signaling are provided. In one provided method, a transmission reception point (TRP) in a wireless communication network receives a first UL reference signal (RS) associated with a first UL RS sequence from a first UE and receives a second UL RS associated with a second UL RS sequence from a second UE, the first and second UL RS sequences being non-orthogonal. In another provided method, A UE determines an UL RS sequence based on a UL RS sequence root, the UL RS sequence root being a UE-specific root and being independent of a cell identifier of a cell serving the UE. The UE sends an UL RS associated with the UL RS sequence, the UL RS sequence being a Zadoff-Chu sequence.
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公开(公告)号：US10820353B2
公开(公告)日：2020-10-27
申请号：US16100125
申请日：2018-08-09
申请人： Yicheng Lin , Keyvan Zarifi , Mohammadhadi Baligh
发明人： Yicheng Lin , Keyvan Zarifi , Mohammadhadi Baligh
摘要： Systems and methods are provided for transmit signalling to configure a UE with a UE specific root to use in generating a Zhadoff Chu (ZC) sequence for reference signal transmission. With conventional LTE, a cell specific root is used within each cell. There is a need for a more flexible association between roots and UEs that, for example, allows for multiple roots to be associated with a cell. The provided approach may help with maintaining re-use distance as networks become denser. The method provided in this embodiment improves the capabilities of automatic driving and ADAS of electric vehicles. The method can be applied to vehicle networking, such as V2X, LTE-V, V2X, etc.
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公开(公告)号：US10834700B2
公开(公告)日：2020-11-10
申请号：US16505029
申请日：2019-07-08
申请人： Keyvan Zarifi , Mohammadhadi Baligh
发明人： Keyvan Zarifi , Mohammadhadi Baligh
摘要： Methods, apparatuses and systems are described. A device, in the active state, receives, from a serving transmission point, a device connection identifier (DCID) associated with the device. The device, in the standby state, periodically transmits, to the same or different serving transmission point, an identifying signal that identifies the first device using the DCID, to synchronize the first device with a wireless communications network.
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公开(公告)号：US09674801B2
公开(公告)日：2017-06-06
申请号：US13558713
申请日：2012-07-26
IPC分类号： H04W52/42 , H04L5/00 , H04B7/024 , H04B7/0426 , H04B7/0452 , H04B7/06 , H04W52/34 , H04W52/36
CPC分类号： H04W52/42 , H04B7/024 , H04B7/0426 , H04B7/0452 , H04B7/0626 , H04L5/0035 , H04W52/346 , H04W52/367
摘要： A system is provided for allocating downlink transmit power in a wireless multiple-input multiple-output (MIMO) system. During operation, the system identifies a set of receivers for receiving signals from one or more transmitters on a same time-frequency slot, receives channel state information (CSI) for communication channels between the identified receivers and the transmitters, and constructs a precoder based on the CSI. The system further derives a set of power-scale factors for the precoder based on a utility function associated with the identified receivers such that the power-scale factors optimize the utility function. A respective power-scale factor scales power transmitted to a corresponding receiver.
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公开(公告)号：US09635598B2
公开(公告)日：2017-04-25
申请号：US14609644
申请日：2015-01-30
申请人： Mohammadhadi Baligh , Keyvan Zarifi , Jianglei Ma
发明人： Mohammadhadi Baligh , Keyvan Zarifi , Jianglei Ma
摘要： A master user equipment (UE) device may coordinate device-to-device (D2D) communications amongst a plurality of UE devices. For example, a UE device, which has been designated as a master UE device, may coordinate a D2D communication between a first UE device and a second UE device. The master UE device may be a UE device that obtains an indication that it is a master UE device that is to coordinate D2D communications amongst the plurality of UE devices. In some embodiments, the coordinating the D2D communication may be on behalf of a network and/or to facilitate wireless communication between the network and at least one of the plurality of UE devices.
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