Patents by Inventor Yigang Cai

Yigang Cai 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).

  • Publication number: 20220256558
    Abstract: Systems and methods for sharing radio resources on an air interface. One embodiment comprises an access network element (e.g., base station) that stores a plurality of sharing patterns each comprising a different mapping of the radio resources on a physical layer of the air interface between Machine-Type Communications (MTC) and non-MTC. The access network element identifies a resource sharing window, receives input indicating conditions in the access network, selects a sharing pattern from the plurality of sharing patterns in the pattern database for the resource sharing window based on the conditions in the access network, schedules MTC transmissions on the air interface at a beginning of the resource sharing window based on the sharing pattern, and schedules non-MTC transmissions on the air interface at the beginning of the resource sharing window based on the sharing pattern.
    Type: Application
    Filed: April 28, 2022
    Publication date: August 11, 2022
    Applicant: Nokia Solutions and Networks Oy
    Inventors: Yigang Cai, Huy Thang Pham
  • Publication number: 20220256434
    Abstract: Embodiments of the present disclosure relate to for controlling D2D routing. A first device generates proximity information for a D2D connection group. The first device obtains information concerning a second device in the group. The first device generates a D2D route policy for at least one application on the second device, based on the generated proximity information, the obtained information concerning the second device and route selection criteria for the group, the policy at least indicating the route selection criteria and D2D paths satisfying the route selection criteria. The first device sends the D2D route policy for routing traffic of the at least one application in the group by the second device.
    Type: Application
    Filed: July 26, 2019
    Publication date: August 11, 2022
    Inventors: Zhi WANG, Yigang CAI
  • Patent number: 11405937
    Abstract: Systems and methods for sharing radio resources on an air interface. One embodiment comprises an access network element (e.g., base station) that stores a plurality of sharing patterns each comprising a different mapping of the radio resources on a physical layer of the air interface between Machine-Type Communications (MTC) and non-MTC. The access network element identifies a resource sharing window, receives input indicating conditions in the access network, selects a sharing pattern from the plurality of sharing patterns in the pattern database for the resource sharing window based on the conditions in the access network, schedules MTC transmissions on the air interface at a beginning of the resource sharing window based on the sharing pattern, and schedules non-MTC transmissions on the air interface at the beginning of the resource sharing window based on the sharing pattern.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: August 2, 2022
    Assignee: Nokia Solutions and Networks OY
    Inventors: Yigang Cai, Huy Thang Pham
  • Publication number: 20220201601
    Abstract: Systems, methods, and software for selecting a network slice for User Equipment (UE) based on a use case specified by the UE. In one embodiment, a slicing policy manager is implemented in a network that is partitioned into a plurality of network slices. The slicing policy manager receives a policy request for the UE, identifies a use case identifier in the policy request that indicates a use case specified by the UE, generates a use case slice selection policy configured to select a network slice from the plurality of network slices based on the use case specified by the UE, and initiates transmission of the use case slice selection policy to a slice selection manager. The slice selection manager may then select a network slice for the UE based on the policy.
    Type: Application
    Filed: April 11, 2019
    Publication date: June 23, 2022
    Inventors: Yigang Cai, Padma Sudarsan, Volker Ziegler
  • Patent number: 11357075
    Abstract: Dynamic control of the length of time that an RRC connection exists is implemented based on the known and anticipated data needs of the UE. More specifically, the lifetime of the RRC connection may be a) initially set, b) extended, or c) shortened, even to the point of substantially immediately releasing it, based on the expected data transmission needs of the UE. This dynamic control is implemented by elements of the core network which are aware of the known and anticipated data needs of the UE. The UE needs are a function of the applications running on the UE. In one LTE-based embodiment, the RRC release timer is responsive to the Policy and Charging Rules Function (PCRF), which can access information about the applications that are running at the UE. In another embodiment, the RRC release timer is responsive to the Policy and Charging Enforcement Function (PCEF).
    Type: Grant
    Filed: October 13, 2016
    Date of Patent: June 7, 2022
    Inventors: Yigang Cai, Yang Yang
  • Patent number: 11350355
    Abstract: Aspects described herein relate to various methods, systems and apparatuses that can be used to configure and manage a network slice based on billing rate information. By selecting a network slice based on billing rate information, the system may further be able to respond to billing rate changes by reselecting network slices. For example, changes in the usage of the network slice or the usage of the overall network infrastructure may cause a change to a billing rate associated with the network slice. These aspects, and others described herein, may result in improved network performance by, for example, offloading extra usage from an overloaded network slice to a network slice that is currently less used.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: May 31, 2022
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Zhi Wang, Yigang Cai
  • Patent number: 11349997
    Abstract: Systems, methods, and software for performing online charging in next generation networks. In one embodiment, a Session Management Function (SMF) of a next generation network implements a Charging Trigger Function (CTF) that directly interfaces with an Online Charging System (OCS). The CTF transmits a charging request to the OCS requesting a quota of service units for the SMF, and receives a charging response from the OCS indicating the quota of service units granted to the SMF by the OCS. The CTF then manages the quota by allocating slices of the quota to User Plane Functions (UPF) implemented in a user plane of the next generation network.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: May 31, 2022
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Yigang Cai, Ranjan Sharma
  • Patent number: 11343660
    Abstract: A technique may include receiving, from an external applications controller, by a mobile edge computing applications manager provided on a mobile edge computing server that is in proximity to a radio access network, a mobile edge computing application criteria that includes management rules for managing at least a portion of a lifecycle of a mobile edge computing application; and storing the mobile edge computing application criteria. In an example embodiment, a technique may further include managing at least a portion of a lifecycle of the mobile edge computing application based on the mobile edge computing application criteria.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: May 24, 2022
    Assignee: Nokia Technologies Oy
    Inventors: Zhi Wang, Yigang Cai
  • Patent number: 11343111
    Abstract: Systems, methods, and software for performing online charging in next generation networks. In one embodiment, a Mobile Edge Computing (MEC) server is implemented at a Radio Access Network (RAN) of a next generation network. The MEC server hosts a plurality of edge applications provisioned to provide MEC services for a session. The MEC server communicates with a Session Management Function (SMF) of the next generation network to acquire a quota of service units for the session. The MEC server then manages the quota by allocating slices of the quota to the edge applications, and transmitting messages to the edge applications indicating the slices allocated to the edge applications.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: May 24, 2022
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Zhi Wang, Yigang Cai
  • Publication number: 20220150810
    Abstract: A method, device and computer readable medium for service chain is provided. Dynamic service chain is achieved and the service chain request is transmitted from the application. The device determines the service chain based on a profile of the application. Further, implicit service chain subscribing is also achieved. Thus, a more flexible service chain is achieved. Further, management of service chain related to NF service is also achieved.
    Type: Application
    Filed: March 12, 2019
    Publication date: May 12, 2022
    Inventors: Zhi WANG, Yigang CAI, Yang SHEN
  • Publication number: 20220116462
    Abstract: Systems, methods, and software for initiating a Packet Switch (PS) Data off feature for User Equipment (UE) within a network. In one embodiment, a network element in a network stores a data off policy that triggers activation or deactivation of the PS Data off feature for the UE, and determines whether to activate the PS Data off feature for the UE based on the data off policy and one or more network service conditions. The network element generates a PS Data off request to activate the PS Data off feature for the UE responsive to a determination to activate the PS Data off feature, and initiates transmission of the PS Data off request for receipt by a gateway of the network that acts as an entry point for downlink traffic for the UE.
    Type: Application
    Filed: January 31, 2019
    Publication date: April 14, 2022
    Inventors: Yigang CAI, Xiangyang LI
  • Patent number: 11290861
    Abstract: Systems, methods, and software for sharing resources of an air interface. In one embodiment, an access network element communicates with a plurality of devices over an air interface. The access network element identifies a resource sharing window having an MTC-On interval where MTC is allowed, and having an MTC-Off interval where MTC is prohibited. Between a threshold time and an end of the MTC-Off interval, the access network element selects an adjusted Modulation and Coding Scheme (MCS) for a legacy device of the plurality of devices that is lower than a standard MCS for the legacy device selected based on channel quality information for the legacy device, allocates a set of the MTC radio resources to the legacy device, and schedules a non-MTC transmission for the legacy device on the set of the MTC radio resources based on the adjusted MCS.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: March 29, 2022
    Assignee: Nokia Sollutions and Networks Oy
    Inventors: Dongsheng Fan, Yigang Cai
  • Publication number: 20220078752
    Abstract: Example embodiments of the present disclosure relate to a device, method, apparatus and computer readable storage medium for reusing control resources for data transmission. In example embodiments, if downlink data is to be transmitted to a terminal device, a network device determines a control resource set associated with the terminal device in a control resource region. The network device selects, from the control resource set, localized control resources for control information associated with the downlink data, and selects data resources for the downlink data in the control resource region and a data resource region. The network device transmits the control information to the terminal device by using the localized control resources, and transmits the downlink data to the terminal device by using the data resources.
    Type: Application
    Filed: January 10, 2019
    Publication date: March 10, 2022
    Inventors: Dongsheng FAN, Yigang CAI
  • Patent number: 11252721
    Abstract: Systems and methods for allocating resources of an air interface. In one embodiment, a base station communicates with a plurality of User Equipment (UE) within a cell over an air interface. The base station selects a UE group from the UEs in the cell to share a physical downlink control channel, selects a slot format for the UE group, and identifies a slot format indicator for the UE group. The base station generates a group ID for the UE group so that a combination of the group ID and the slot format indicator indicates a slot format value that is mapped to the selected slot format for the UE group, provides the group ID to the UE group, and transmits the slot format indicator on the physical downlink control channel to the UE group.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: February 15, 2022
    Assignee: NOKIA TECHNOLOGIES OY
    Inventor: Yigang Cai
  • Publication number: 20210399907
    Abstract: The method comprises the steps of: the Policy and Charging Rules Function (PCRF) receiving (Step 1) user's subscription information, in order to determine an initial policy; the Policy and Charging Enforcement Function (PCEF) applying (Step 2) the initial rules; the Policy and Charging Enforcement Function (PCEF) triggering (Step 3) the Extended Online Charging System (EOCS) for the user's service/network resource usage; the Extended Online Charging System (EOCS) rating and charging (step 4) the user, in real time; the Extended Online Charging System (EOCS) triggering (Step 5) a change of policy in the Policy and Charging Rules Function (PCRF); the Policy and Charging Rules Function (PCRF) determining (Step 6) new rules for the new policy; the Policy and Charging Enforcement Function (PCEF) receiving (Step 7) the new rules and applying them.
    Type: Application
    Filed: July 7, 2021
    Publication date: December 23, 2021
    Applicants: Alcatel Lucent, Alcatel-Lucent USA Inc.
    Inventors: Kim BROUARD, Thomas LEVY, Yigang CAI
  • Publication number: 20210385724
    Abstract: Systems, apparatuses, and methods are described for configuring route selection policies. A user device may send, to a computing device, a route selection policy request to update route selection policy rules for applications and/or services of the user device. The computing device may determine the route selection policy rules for the applications and/or services based on various criteria. The computing device may send the determined route selection policy rules to the user device. If the user device does not accept the determined route selection policy rules, the user device may send, to the computing device, a negotiation request to obtain other route selection policy rules for the applications and/or services.
    Type: Application
    Filed: August 24, 2018
    Publication date: December 9, 2021
    Inventors: Zhi WANG, Yigang CAI
  • Patent number: 11197209
    Abstract: There is provided a solution for balancing application content processing in a mobile communication network. According to an aspect, a method comprises: determining to handover content processing of application data of a terminal device from a first network element to a second network element, wherein one of the first network element and the second network element is configured to perform multi-access edge computing and the other one of the first network element and the second network element is an application server in a core network or beyond the core network from a perspective of the multi-access edge computing; and transmitting at least one handover message to handover the content processing of the application data from the first network element to the second network element.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: December 7, 2021
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Guanhua Guo, Yigang Cai, Zhi Wang
  • Patent number: 11178595
    Abstract: Embodiments of the present disclosure provide a method for networking and a corresponding device. The method includes in response to a terminal device accessing network, obtaining configuration information of the terminal device; based on the configuration information, determining a traffic path associated with the terminal device; and configuring an underlying network node of the network based on the traffic path such that the underlying network node routes traffic associated with the terminal device based on the traffic path. A device that can implement the above method is further disclosed.
    Type: Grant
    Filed: November 24, 2017
    Date of Patent: November 16, 2021
    Assignee: Nokia Technologies Oy
    Inventors: Zhi Wang, Yigang Cai
  • Patent number: 11159936
    Abstract: A method of handling user service profile information in a communications network, the communications network including a core network (CN) and a radio access network (RAN), includes receiving, at a first network element located in the CN, a first application status change message from a first mobile edge computing (MEC) server located in the RAN, the first application status change message indicating one or more applications currently running on the first MEC server; detecting a location update message received at the CN from a UE attached to the RAN; and in response to detecting the location update message, obtaining service profile data of the UE for at least one service corresponding to at least one of the one or more applications, and providing the obtained service profile data to the first MEC server.
    Type: Grant
    Filed: January 25, 2018
    Date of Patent: October 26, 2021
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Laurence Wang, Yigang Cai
  • Patent number: 11134410
    Abstract: Systems, methods, and software for controlling Quality of Service (QoS) selection in Mobile Edge Computing (MEC) services. In one embodiment, a MEC server is at a Radio Access Network (RAN), and implements edge applications that provide the MEC services. The MEC server queries a core network for a QoS policy for a mobile device that indicates QoS profile options for the mobile device, and receives the QoS policy from the core network. The MEC server monitors for a triggering event that triggers selection of a QoS profile, selects the QoS profile from the QoS profile options for a user plane connection established for a MEC service between the mobile device and an edge application in response to the triggering event, and provides a QoS profile identifier for the QoS profile to a base station in the RAN to enforce the QoS profile on the user plane connection.
    Type: Grant
    Filed: December 25, 2017
    Date of Patent: September 28, 2021
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Zhi Wang, Yigang Cai