Patents by Inventor Cheng P. Liu

Cheng P. Liu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 11700537
    Abstract: Aspects of the subject disclosure include, for example, identifying a primary serving cell and a secondary serving cell, wherein the primary serving cell facilitates one of attachment, re-attachment or mobility, or any combination thereof, of a mobile device in association with coordination of a wireless service between the primary serving cell, the secondary serving cell and the mobile device. A latency value associated with a message exchange is determined between the primary and secondary serving cells via a messaging interface, and compared to latency requirements, which correspond to a group of mobile service features. A mobile service feature of the group is associated with the wireless service based on the comparison. The wireless service includes a coordinated exchange of wireless signals between the primary serving cell and the mobile device and between the secondary serving cell and the mobile device based on the mobile service feature. Other embodiments are disclosed.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: July 11, 2023
    Assignees: AT&T Intellectual Property I, L.P., AT&T Mobility II LLC
    Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
  • Publication number: 20230199526
    Abstract: Aspects of the subject disclosure include, for example, identifying a primary serving cell and a secondary serving cell, wherein the primary serving cell facilitates one of attachment, re-attachment or mobility, or any combination thereof, of a mobile device in association with coordination of a wireless service between the primary serving cell, the secondary serving cell and the mobile device. A latency value associated with a message exchange is determined between the primary and secondary serving cells via a messaging interface, and compared to latency requirements, which correspond to a group of mobile service features. A mobile service feature of the group is associated with the wireless service based on the comparison. The wireless service includes a coordinated exchange of wireless signals between the primary serving cell and the mobile device and between the secondary serving cell and the mobile device based on the mobile service feature. Other embodiments are disclosed.
    Type: Application
    Filed: February 13, 2023
    Publication date: June 22, 2023
    Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
  • Patent number: 11641590
    Abstract: Aspects of the subject disclosure include, for example, identifying a primary serving cell and a secondary serving cell, wherein the primary serving cell facilitates one of attachment, re-attachment or mobility, or any combination thereof, of a mobile device in association with coordination of a wireless service between the primary serving cell, the secondary serving cell and the mobile device. A latency value associated with a message exchange is determined between the primary and secondary serving cells via a messaging interface, and compared to latency requirements, which correspond to a group of mobile service features. A mobile service feature of the group is associated with the wireless service based on the comparison. The wireless service includes a coordinated exchange of wireless signals between the primary serving cell and the mobile device and between the secondary serving cell and the mobile device based on the mobile service feature. Other embodiments are disclosed.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: May 2, 2023
    Assignees: AT&T Intellectual Property I, L.P., AT&T Mobility II LLC
    Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
  • Publication number: 20210168629
    Abstract: Aspects of the subject disclosure include, for example, identifying a primary serving cell and a secondary serving cell, wherein the primary serving cell facilitates one of attachment, re-attachment or mobility, or any combination thereof, of a mobile device in association with coordination of a wireless service between the primary serving cell, the secondary serving cell and the mobile device. A latency value associated with a message exchange is determined between the primary and secondary serving cells via a messaging interface, and compared to latency requirements, which correspond to a group of mobile service features. A mobile service feature of the group is associated with the wireless service based on the comparison. The wireless service includes a coordinated exchange of wireless signals between the primary serving cell and the mobile device and between the secondary serving cell and the mobile device based on the mobile service feature. Other embodiments are disclosed.
    Type: Application
    Filed: February 9, 2021
    Publication date: June 3, 2021
    Applicants: AT&T Intellectual Property I, L.P., AT&T Mobility II LLC
    Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P. Liu, Yonghui Tong
  • Patent number: 10959117
    Abstract: Aspects of the subject disclosure include, for example, identifying a primary serving cell and a secondary serving cell, wherein the primary serving cell facilitates one of attachment, re-attachment or mobility, or any combination thereof, of a mobile device in association with coordination of a wireless service between the primary serving cell, the secondary serving cell and the mobile device. A latency value associated with a message exchange is determined between the primary and secondary serving cells via a messaging interface, and compared to latency requirements, which correspond to a group of mobile service features. A mobile service feature of the group is associated with the wireless service based on the comparison. The wireless service includes a coordinated exchange of wireless signals between the primary serving cell and the mobile device and between the secondary serving cell and the mobile device based on the mobile service feature. Other embodiments are disclosed.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: March 23, 2021
    Assignees: AT&T Intellectual Property I, L.P., AT&T MOBILITY II LLC
    Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
  • Patent number: 10798611
    Abstract: Load balancing is facilitated utilizing geographical location and mobility speed. An example method includes receiving, by a first cell device including a processor and associated with a first cell, from a device of devices, information indicative of whether the device has detected cell type information from a second cell device associated with a second cell, wherein at least a portion of the second cell is located within a first boundary of the first cell. The method also includes: determining, by the first cell device, a mobility characteristic of the device, wherein the devices comprise respective mobility characteristics; and selecting, by the first cell device, the device of the devices to associate with the second cell based on the mobility characteristic of the device.
    Type: Grant
    Filed: February 15, 2019
    Date of Patent: October 6, 2020
    Assignees: AT&T INTELLECTUAL PROPERTY I, L.P., AT&T MOBILITY II LLC
    Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P. Liu, Slawomir Stawiarski, Yonghui Tong
  • Patent number: 10680681
    Abstract: An inter-cell interference coordination procedure in heterogeneous networks (HetNets) is enhanced based on utilization of cell profile data associated with neighbor access points to improve HetNet spectrum efficiency, mobility performance, and/or overall network capacity. In one aspect, a macro access point can receive cell profile data associated with neighbor access points and modify a power level of reduced-power almost blank subframes (ABS) transmitted by the macro access point to manage macro cell capacity. Further, the macro access point can configure the ABS pattern and transmit the ABS pattern to the neighbor access points. Based on the ABS pattern, the neighbor access points can schedule transmissions to user equipment that are located at (or close to) their cell-edge to reduce inter-cell interference.
    Type: Grant
    Filed: March 21, 2019
    Date of Patent: June 9, 2020
    Assignees: AT&T MOBILITY II LLC, AT&T INTELLECTUAL PROPERTY I, L.P.
    Inventors: Zhi Cui, Cheng P. Liu, Hongyan Lei
  • Patent number: 10638352
    Abstract: Management services are provided during local breakout at a femto access point (FAP). In an aspect, the FAP facilitates policy management and employs a policy component to perform an analysis and enforce a set of policies for dynamically selecting an optimal route for traffic received at the FAP based on a decision-making process. Typically, the set of policies can specify different routes based on various factors, such as, but not limited to, type of traffic, current and/or future network resource availability, current time, day and/or date, location of the FAP, location of a UE sending/receiving the traffic, a lowest cost route, and/or route based on cost-benefit, etc. Further, a monitoring component is employed to observe the route employed by that traffic, which can be utilized by various services, such as, billing, Quality of Service, security management, address management, failure management and/or provisioning.
    Type: Grant
    Filed: September 17, 2015
    Date of Patent: April 28, 2020
    Assignees: AT&T INTELLECTUAL PROPERTY I, L.P., AT&T Mobility II LLC
    Inventors: Cheng P. Liu, Alireza Farid Faryar, Kurt Huber, Henry Jackson Fowler, Jr., Robert C. Streijl
  • Patent number: 10616859
    Abstract: Performing user equipment (UE) assisted indoor small cell location determination is presented herein. A method can include in response to sending, by an access point device, a request directed to a mobile device to obtain mobile device location data representing a user equipment location of the mobile device, receiving, by the access point device, the mobile device location data from the mobile device; and based on the mobile device location data, determining, by the access point device, access point location data representing an access point location of the access point device. In an example, the mobile device location data can include coordinates of the mobile device comprising latitude of the mobile device and longitude of the mobile device, and a time stamp representing a time of generation of the coordinates. In another example, the mobile device location data can include an altitude of the mobile device.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: April 7, 2020
    Assignee: AT&T MOBILITY II LLC
    Inventors: Hongyan Lei, Yung Shirley Choi-Grogan, Cheng P. Liu, David Orloff
  • Publication number: 20190364444
    Abstract: Aspects of the subject disclosure include, for example, identifying a primary serving cell and a secondary serving cell, wherein the primary serving cell facilitates one of attachment, re-attachment or mobility, or any combination thereof, of a mobile device in association with coordination of a wireless service between the primary serving cell, the secondary serving cell and the mobile device. A latency value associated with a message exchange is determined between the primary and secondary serving cells via a messaging interface, and compared to latency requirements, which correspond to a group of mobile service features. A mobile service feature of the group is associated with the wireless service based on the comparison. The wireless service includes a coordinated exchange of wireless signals between the primary serving cell and the mobile device and between the secondary serving cell and the mobile device based on the mobile service feature. Other embodiments are disclosed.
    Type: Application
    Filed: August 9, 2019
    Publication date: November 28, 2019
    Applicants: AT&T Intellectual Property I, L.P., AT&T MOBILITY II LLC
    Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
  • Patent number: 10425844
    Abstract: Aspects of the subject disclosure include, for example, identifying a primary serving cell and a secondary serving cell, wherein the primary serving cell facilitates one of attachment, re-attachment or mobility, or any combination thereof, of a mobile device in association with coordination of a wireless service between the primary serving cell, the secondary serving cell and the mobile device. A latency value associated with a message exchange is determined between the primary and secondary serving cells via a messaging interface, and compared to latency requirements, which correspond to a group of mobile service features. A mobile service feature of the group is associated with the wireless service based on the comparison. The wireless service includes a coordinated exchange of wireless signals between the primary serving cell and the mobile device and between the secondary serving cell and the mobile device based on the mobile service feature. Other embodiments are disclosed.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: September 24, 2019
    Assignees: AT&T Intellectual Property I, L.P., AT&T Mobility II LLC
    Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
  • Publication number: 20190222266
    Abstract: An inter-cell interference coordination procedure in heterogeneous networks (HetNets) is enhanced based on utilization of cell profile data associated with neighbor access points to improve HetNet spectrum efficiency, mobility performance, and/or overall network capacity. In one aspect, a macro access point can receive cell profile data associated with neighbor access points and modify a power level of reduced-power almost blank subframes (ABS) transmitted by the macro access point to manage macro cell capacity. Further, the macro access point can configure the ABS pattern and transmit the ABS pattern to the neighbor access points. Based on the ABS pattern, the neighbor access points can schedule transmissions to user equipment that are located at (or close to) their cell-edge to reduce inter-cell interference.
    Type: Application
    Filed: March 21, 2019
    Publication date: July 18, 2019
    Inventors: Zhi Cui, Cheng P. Liu, Hongyan Lei
  • Publication number: 20190182710
    Abstract: Load balancing is facilitated utilizing geographical location and mobility speed. An example method includes receiving, by a first cell device including a processor and associated with a first cell, from a device of devices, information indicative of whether the device has detected cell type information from a second cell device associated with a second cell, wherein at least a portion of the second cell is located within a first boundary of the first cell. The method also includes: determining, by the first cell device, a mobility characteristic of the device, wherein the devices comprise respective mobility characteristics; and selecting, by the first cell device, the device of the devices to associate with the second cell based on the mobility characteristic of the device.
    Type: Application
    Filed: February 15, 2019
    Publication date: June 13, 2019
    Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P. Liu, Slawomir Stawiarski, Yonghui Tong
  • Patent number: 10271333
    Abstract: Concepts and technologies disclosed herein are directed to service aware carrier aggregation. According to one aspect disclosed herein, an eNodeB (“eNB”) can learn, via a primary serving cell (“PSC”), that a user equipment (“UE”) has a capability to utilize a carrier aggregation feature. The eNB can receive policy information and service information, and can learn, via the PSC, a service requested by the UE. The eNB can determine, based at least in part upon the policy information, the service information, and the service, whether to implement the carrier aggregation feature to provide the service to the UE. When the eNB determines that the carrier aggregation feature is to be implemented, the eNB can inform the UE to reconfigure a radio resource control (“RRC”) configuration to include the PSC and a secondary serving cell (“SSC”). The eNB can allocate physical media resources for the service from the PSC and the SSC.
    Type: Grant
    Filed: December 15, 2016
    Date of Patent: April 23, 2019
    Assignees: AT&T Intellectual Property I, L.P., AT&T Mobility II LLC
    Inventors: Zhi Cui, Cheng P. Liu, Hongyan Lei
  • Patent number: 10251088
    Abstract: Load balancing is facilitated utilizing geographical location and mobility speed. An example method includes receiving, by a first cell device including a processor and associated with a first cell, from a device of devices, information indicative of whether the device has detected cell type information from a second cell device associated with a second cell, wherein at least a portion of the second cell is located within a first boundary of the first cell. The method also includes: determining, by the first cell device, a mobility characteristic of the device, wherein the devices comprise respective mobility characteristics; and selecting, by the first cell device, the device of the devices to associate with the second cell based on the mobility characteristic of the device.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: April 2, 2019
    Assignees: AT&T Mobility II LLC, AT&T Intellectual Property I, L.P.
    Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P. Liu, Slawomir Stawiarski, Yonghui Tong
  • Publication number: 20190098603
    Abstract: Performing user equipment (UE) assisted indoor small cell location determination is presented herein. A method can include in response to sending, by an access point device, a request directed to a mobile device to obtain mobile device location data representing a user equipment location of the mobile device, receiving, by the access point device, the mobile device location data from the mobile device; and based on the mobile device location data, determining, by the access point device, access point location data representing an access point location of the access point device. In an example, the mobile device location data can include coordinates of the mobile device comprising latitude of the mobile device and longitude of the mobile device, and a time stamp representing a time of generation of the coordinates. In another example, the mobile device location data can include an altitude of the mobile device.
    Type: Application
    Filed: November 21, 2018
    Publication date: March 28, 2019
    Inventors: Hongyan Lei, Yung Shirley Choi-Grogan, Cheng P. Liu, David Orloff
  • Patent number: 10243622
    Abstract: An inter-cell interference coordination procedure in heterogeneous networks (HetNets) is enhanced based on utilization of cell profile data associated with neighbor access points to improve HetNet spectrum efficiency, mobility performance, and/or overall network capacity. In one aspect, a macro access point can receive cell profile data associated with neighbor access points and modify a power level of reduced-power almost blank subframes (ABS) transmitted by the macro access point to manage macro cell capacity. Further, the macro access point can configure the ABS pattern and transmit the ABS pattern to the neighbor access points. Based on the ABS pattern, the neighbor access points can schedule transmissions to user equipment that are located at (or close to) their cell-edge to reduce inter-cell interference.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: March 26, 2019
    Assignees: AT&T INTELLECTUAL PROPERTY I, L.P., AT&T MOBILITY II LLC
    Inventors: Zhi Cui, Cheng P. Liu, Hongyan Lei
  • Patent number: 10172110
    Abstract: Performing user equipment (UE) assisted indoor small cell location determination is presented herein. A method can include in response to sending, by an access point device, a request directed to a mobile device to obtain mobile device location data representing a user equipment location of the mobile device, receiving, by the access point device, the mobile device location data from the mobile device; and based on the mobile device location data, determining, by the access point device, access point location data representing an access point location of the access point device. In an example, the mobile device location data can include coordinates of the mobile device comprising latitude of the mobile device and longitude of the mobile device, and a time stamp representing a time of generation of the coordinates. In another example, the mobile device location data can include an altitude of the mobile device.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: January 1, 2019
    Assignee: AT&T Mobility II LLC
    Inventors: Hongyan Lei, Yung Shirley Choi-Grogan, Cheng P. Liu, David Orloff
  • Publication number: 20180343573
    Abstract: Aspects of the subject disclosure include, for example, identifying a primary serving cell and a secondary serving cell, wherein the primary serving cell facilitates one of attachment, re-attachment or mobility, or any combination thereof, of a mobile device in association with coordination of a wireless service between the primary serving cell, the secondary serving cell and the mobile device. A latency value associated with a message exchange is determined between the primary and secondary serving cells via a messaging interface, and compared to latency requirements, which correspond to a group of mobile service features. A mobile service feature of the group is associated with the wireless service based on the comparison. The wireless service includes a coordinated exchange of wireless signals between the primary serving cell and the mobile device and between the secondary serving cell and the mobile device based on the mobile service feature. Other embodiments are disclosed.
    Type: Application
    Filed: August 1, 2018
    Publication date: November 29, 2018
    Applicants: AT&T Intellectual Property I, L.P., AT&T Mobility II LLC
    Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
  • Patent number: 10064106
    Abstract: Aspects of the subject disclosure include, for example, identifying a primary serving cell and a secondary serving cell, wherein the primary serving cell facilitates one of attachment, re-attachment or mobility, or any combination thereof, of a mobile device in association with coordination of a wireless service between the primary serving cell, the secondary serving cell and the mobile device. A latency value associated with a message exchange is determined between the primary and secondary serving cells via a messaging interface, and compared to latency requirements, which correspond to a group of mobile service features. A mobile service feature of the group is associated with the wireless service based on the comparison. The wireless service includes a coordinated exchange of wireless signals between the primary serving cell and the mobile device and between the secondary serving cell and the mobile device based on the mobile service feature. Other embodiments are disclosed.
    Type: Grant
    Filed: September 13, 2017
    Date of Patent: August 28, 2018
    Assignees: AT&T INTELLECTUAL PROPERTY I, L.P., AT&T MOBILITY II LLC
    Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong