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).
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Patent number: 11700537Abstract: 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: GrantFiled: February 9, 2021Date of Patent: July 11, 2023Assignees: AT&T Intellectual Property I, L.P., AT&T Mobility II LLCInventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
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Publication number: 20230199526Abstract: 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: ApplicationFiled: February 13, 2023Publication date: June 22, 2023Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
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Patent number: 11641590Abstract: 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: GrantFiled: February 9, 2021Date of Patent: May 2, 2023Assignees: AT&T Intellectual Property I, L.P., AT&T Mobility II LLCInventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
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Publication number: 20210168629Abstract: 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: ApplicationFiled: February 9, 2021Publication date: June 3, 2021Applicants: AT&T Intellectual Property I, L.P., AT&T Mobility II LLCInventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P. Liu, Yonghui Tong
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Patent number: 10959117Abstract: 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: GrantFiled: August 9, 2019Date of Patent: March 23, 2021Assignees: AT&T Intellectual Property I, L.P., AT&T MOBILITY II LLCInventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
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Patent number: 10798611Abstract: 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: GrantFiled: February 15, 2019Date of Patent: October 6, 2020Assignees: AT&T INTELLECTUAL PROPERTY I, L.P., AT&T MOBILITY II LLCInventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P. Liu, Slawomir Stawiarski, Yonghui Tong
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Patent number: 10680681Abstract: 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: GrantFiled: March 21, 2019Date of Patent: June 9, 2020Assignees: AT&T MOBILITY II LLC, AT&T INTELLECTUAL PROPERTY I, L.P.Inventors: Zhi Cui, Cheng P. Liu, Hongyan Lei
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Patent number: 10638352Abstract: 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: GrantFiled: September 17, 2015Date of Patent: April 28, 2020Assignees: AT&T INTELLECTUAL PROPERTY I, L.P., AT&T Mobility II LLCInventors: Cheng P. Liu, Alireza Farid Faryar, Kurt Huber, Henry Jackson Fowler, Jr., Robert C. Streijl
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Patent number: 10616859Abstract: 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: GrantFiled: November 21, 2018Date of Patent: April 7, 2020Assignee: AT&T MOBILITY II LLCInventors: Hongyan Lei, Yung Shirley Choi-Grogan, Cheng P. Liu, David Orloff
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Publication number: 20190364444Abstract: 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: ApplicationFiled: August 9, 2019Publication date: November 28, 2019Applicants: AT&T Intellectual Property I, L.P., AT&T MOBILITY II LLCInventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
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Patent number: 10425844Abstract: 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: GrantFiled: August 1, 2018Date of Patent: September 24, 2019Assignees: AT&T Intellectual Property I, L.P., AT&T Mobility II LLCInventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
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Publication number: 20190222266Abstract: 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: ApplicationFiled: March 21, 2019Publication date: July 18, 2019Inventors: Zhi Cui, Cheng P. Liu, Hongyan Lei
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Publication number: 20190182710Abstract: 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: ApplicationFiled: February 15, 2019Publication date: June 13, 2019Inventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P. Liu, Slawomir Stawiarski, Yonghui Tong
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Patent number: 10271333Abstract: 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: GrantFiled: December 15, 2016Date of Patent: April 23, 2019Assignees: AT&T Intellectual Property I, L.P., AT&T Mobility II LLCInventors: Zhi Cui, Cheng P. Liu, Hongyan Lei
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Patent number: 10251088Abstract: 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: GrantFiled: April 9, 2015Date of Patent: April 2, 2019Assignees: 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
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Publication number: 20190098603Abstract: 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: ApplicationFiled: November 21, 2018Publication date: March 28, 2019Inventors: Hongyan Lei, Yung Shirley Choi-Grogan, Cheng P. Liu, David Orloff
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Patent number: 10243622Abstract: 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: GrantFiled: March 31, 2017Date of Patent: March 26, 2019Assignees: AT&T INTELLECTUAL PROPERTY I, L.P., AT&T MOBILITY II LLCInventors: Zhi Cui, Cheng P. Liu, Hongyan Lei
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Patent number: 10172110Abstract: 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: GrantFiled: August 3, 2017Date of Patent: January 1, 2019Assignee: AT&T Mobility II LLCInventors: Hongyan Lei, Yung Shirley Choi-Grogan, Cheng P. Liu, David Orloff
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Publication number: 20180343573Abstract: 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: ApplicationFiled: August 1, 2018Publication date: November 29, 2018Applicants: AT&T Intellectual Property I, L.P., AT&T Mobility II LLCInventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong
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Patent number: 10064106Abstract: 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: GrantFiled: September 13, 2017Date of Patent: August 28, 2018Assignees: AT&T INTELLECTUAL PROPERTY I, L.P., AT&T MOBILITY II LLCInventors: Hongyan Lei, Ye Chen, Zhi Cui, Cheng P Liu, Yonghui Tong