公开(公告)号：US09668141B2

公开(公告)日：2017-05-30

申请号：US13547920

申请日：2012-07-12

Applicant: Gamini Senarath ,  Aaron Callard ,  Mohammadhadi Baligh ,  Keyvan Zarifi ,  Liqing Zhang ,  Ho Ting Cheng

Inventor： Gamini Senarath ,  Aaron Callard ,  Mohammadhadi Baligh ,  Keyvan Zarifi ,  Liqing Zhang ,  Ho Ting Cheng

IPC: H04W40/24 ,  H04W16/12 ,  H04W40/32 ,  H04W16/18

CPC classification number: H04W16/12 ,  H04W16/18 ,  H04W40/24 ,  H04W40/32

Abstract: Various devices and methods are disclosed to support clustering optimization in a communication system. For example, multiple nodes of the communication system can be segmented into multiple clustering plans. Each clustering plan can include multiple clusters that do not overlap with one another within that clustering plan. At least one of the clusters of one clustering plan can overlap at least one of the clusters of at least one other clustering plan. Each node could be a non-boundary node in at least one cluster of at least one clustering plan. Multiple nodes of the communication system can alternatively be segmented into clusters having expanding and contracting borders.

公开(公告)号：US12196845B2

公开(公告)日：2025-01-14

申请号：US16835852

申请日：2020-03-31

Applicant: Alireza Bayesteh ,  Keyvan Zarifi ,  Mohammadhadi Baligh ,  Navid Tadayon

Inventor： Alireza Bayesteh ,  Keyvan Zarifi ,  Mohammadhadi Baligh ,  Navid Tadayon

IPC: G01S13/42 ,  G01S5/02 ,  G01S7/00 ,  G01S13/76 ,  G01S13/87

Abstract: Methods and apparatus are provided that may simplify and enhance the location of nodes in a network, including ED and mobile TPs, even if all or many of the nodes are mobile. The methods may be used to enable single TP positioning, and may be used to reduce synchronization error. The provided methods make use of smart reflectors having known location. By processing a combination of signals, which may include an original transmitted signal, and/or one or more reflected signals, the location of a receiving node can be determined. Media tagging may be employed to allow a receiver to detect the identity of the nearby reflectors (with known locations) and based on the identity determine the locations of the reflectors. Using this information, the receiving node can detect its location regardless of knowing the transmission source and/or location.

公开(公告)号：US12081473B2

公开(公告)日：2024-09-03

申请号：US17410470

申请日：2021-08-24

Applicant: Keyvan Zarifi

Inventor： Keyvan Zarifi

IPC: H04W72/51 ,  H04L5/00

CPC classification number: H04L5/0048 ,  H04W72/51

Abstract: Methods and devices for sounding reference signal (SRS) carrier aggregation are provided. A target device is configured with N (N≥2) SRSs that include a reference SRS and N−1 target SRS. Lower layer signaling, such as a MAC-CE or a DCI message, is used to activate the N−1 target SRS, such that each of the N SRSs is transmitted on a respective carrier component from a common antenna port. The lower level signaling used to activate the target SRS may identify configuration parameters of the target SRS that are to be overridden by the corresponding configuration parameters of the reference SRS. Embodiments of the present disclosure increase the effective SRS bandwidth, which may improve positioning measurement accuracy, while also reducing the higher-layer configuration signaling by activating target SRS in lower layer signaling and overriding some configuration parameters of the target SRS by the corresponding configuration parameters of the reference SRS.

公开(公告)号：US20220069959A1

公开(公告)日：2022-03-03

申请号：US17410470

申请日：2021-08-24

Applicant: KEYVAN ZARIFI

Inventor： KEYVAN ZARIFI

IPC: H04L5/00 ,  H04W72/04

Abstract: Methods and devices for sounding reference signal (SRS) carrier aggregation are provided. A target device is configured with N (N≥2) SRSs that include a reference SRS and N−1 target SRS. Lower layer signaling, such as a MAC-CE or a DCI message, is used to activate the N−1 target SRS, such that each of the N SRSs is transmitted on a respective carrier component from a common antenna port. The lower level signaling used to activate the target SRS may identify configuration parameters of the target SRS that are to be overridden by the corresponding configuration parameters of the reference SRS. Embodiments of the present disclosure increase the effective SRS bandwidth, which may improve positioning measurement accuracy, while also reducing the higher-layer configuration signaling by activating target SRS in lower layer signaling and overriding some configuration parameters of the target SRS by the corresponding configuration parameters of the reference SRS.

公开(公告)号：US10680855B2

公开(公告)日：2020-06-09

申请号：US15588499

申请日：2017-05-05

Applicant: Mohammadhadi Baligh ,  Keyvan Zarifi ,  Jianglei Ma ,  Kelvin Kar Kin Au

Inventor： Mohammadhadi Baligh ,  Keyvan Zarifi ,  Jianglei Ma ,  Kelvin Kar Kin Au

IPC: H04L25/02 ,  H04L27/26 ,  H04L5/00

Abstract: Systems and methods of assigning channel state information-reference symbol (CSI-RS) ports to user equipment are provided. In addition resource configurations for transmission of CSI-RS are provided, and methods of mapping CSI-RS sequences to such resources are provided.

公开(公告)号：US20200092151A1

公开(公告)日：2020-03-19

申请号：US16690235

申请日：2019-11-21

Applicant: KEYVAN ZARIFI ,  MOHAMMADHADI BALIGH ,  USA VILAIPORNSAWAI

Inventor： KEYVAN ZARIFI ,  MOHAMMADHADI BALIGH ,  USA VILAIPORNSAWAI

IPC: H04L27/26 ,  H04L5/00 ,  H04J13/00

Abstract: 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.

公开(公告)号：US10568153B2

公开(公告)日：2020-02-18

申请号：US15459166

申请日：2017-03-15

Applicant: Mohammadhadi Baligh ,  Keyvan Zarifi ,  Jianglei Ma

Inventor： Mohammadhadi Baligh ,  Keyvan Zarifi ,  Jianglei Ma

IPC: H04W36/30 ,  H04W76/14 ,  H04W40/02 ,  H04W76/02 ,  H04W40/20 ,  H04W40/22 ,  H04W28/02 ,  H04W40/16 ,  H04W84/20

Abstract: 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.

公开(公告)号：US20200044806A1

公开(公告)日：2020-02-06

申请号：US16054707

申请日：2018-08-03

Applicant: AMAN JASSAL ,  KEYVAN ZARIFI

Inventor： AMAN JASSAL ,  KEYVAN ZARIFI

IPC: H04L5/00

Abstract: Networks use channel state information reference signals (CSI-RSs) to measure channel conditions between a user equipment (UE) and a transmit/receive point (TRP) in a cell. The resources configured for the transmission of a CSI-RS may be indicated to the UE using higher layer signaling. Measurement results for a CSI-RS are transmitted by the UE in the form of a measurement report. A need exists for signaling designs that aim to provide more flexible and efficient signaling of CSI-RS resource configurations and measurement reports. In some embodiments, CSI-RS resource configurations and measurement reports are resource-specific. The CSI-RS resource configurations may be independent from an identifier of the cell that the CSI-RS is transmitted from, and the measurement reports do not necessarily include the identifier of the cell. Advantages may include allowing the network to freely allocate CSI-RS resources without the need for reconfiguration at the UE side.

公开(公告)号：US10517082B2

公开(公告)日：2019-12-24

申请号：US15181971

申请日：2016-06-14

Applicant: Mohammadhadi Baligh ,  Alireza Bayesteh ,  Keyvan Zarifi ,  Usa Vilaipornsawai ,  Yicheng Lin

Inventor： Mohammadhadi Baligh ,  Alireza Bayesteh ,  Keyvan Zarifi ,  Usa Vilaipornsawai ,  Yicheng Lin

IPC: H04W4/00 ,  H04W72/04 ,  H04L1/08 ,  H04L1/18 ,  H04L27/26 ,  H04B7/024 ,  H04B7/0452 ,  H04B7/06 ,  H04L5/00 ,  H04W72/12 ,  H04W52/34 ,  H04L1/00

Abstract: 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.

公开(公告)号：US20170331645A1

公开(公告)日：2017-11-16

申请号：US15588499

申请日：2017-05-05

Applicant: MOHAMMADHADI BALIGH ,  KEYVAN ZARIFI ,  JIANGLEI MA ,  KELVIN KAR KIN AU

Inventor： MOHAMMADHADI BALIGH ,  KEYVAN ZARIFI ,  JIANGLEI MA ,  KELVIN KAR KIN AU

IPC: H04L25/02 ,  H04L5/00

Abstract: Systems and methods of assigning channel state information-reference symbol (CSI-RS) ports to user equipment are provided. In addition resource configurations for transmission of CSI-RS are provided, and methods of mapping CSI-RS sequences to such resources are provided.