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: 20210021647
    Abstract: Systems, methods, and software for selecting among a plurality of IMS network slices. When an IP Multimedia Subsystem (IMS) network is partitioned into a plurality of IMS network slices, an IMS slice selection manager may be implemented at an edge of the IMS network slices. The IMS slice selection manager receives an IMS slice selection policy, and receives an IMS service request for an IMS service. The IMS slice selection manager selects an IMS network slice to provide the IMS service based on the IMS slice selection policy, and causes routing of the IMS service request to the selected IMS network slice.
    Type: Application
    Filed: March 20, 2018
    Publication date: January 21, 2021
    Inventors: Yigang CAI, Laurence WANG
  • Patent number: 10869228
    Abstract: Apparatuses and methods for resource allocation. A method includes: obtaining a future traffic estimate in a data network of a cellular radio network based on past traffic in the data network; requesting a pool of session resources from a border gateway of the data network based on the future traffic estimate; and allocating repeatedly dedicated resources including an IP address and a port of the border gateway for each session from the pool of session resources.
    Type: Grant
    Filed: January 7, 2020
    Date of Patent: December 15, 2020
    Assignee: NOKIA SOLUTIONS AND NETWORKS OY
    Inventors: Guanhua Guo, Yigang Cai, Zhi Wang
  • Publication number: 20200351637
    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: Application
    Filed: January 25, 2018
    Publication date: November 5, 2020
    Applicant: Nokia Solutions and Networks Oy
    Inventors: Laurence WANG, Yigang CAI
  • Publication number: 20200351872
    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: Application
    Filed: November 2, 2017
    Publication date: November 5, 2020
    Inventor: Yigang CAI
  • Publication number: 20200351724
    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: Application
    Filed: April 29, 2020
    Publication date: November 5, 2020
    Inventors: Guanhua GUO, Yigang CAI, Zhi WANG
  • Publication number: 20200336902
    Abstract: Systems, methods, and software for authorizing an application in User Equipment (UE) for direct discovery. In one embodiment, an authorization mechanism receives information (e.g., application ID) for a discovery request sent by an application in a UE. In response to the discovery request, the authorization mechanism challenges the UE for information regarding security parameters that are mapped to the application ID. Based on the information provided by the UE, the authorization mechanism determines whether the application is authorized for direct discovery.
    Type: Application
    Filed: November 15, 2017
    Publication date: October 22, 2020
    Inventors: Zhi Wang, Yigang Cai
  • Patent number: 10812959
    Abstract: An enhanced alert system provides for message delivery via unlicensed wireless spectrum (e.g., LTE-U or WiFi) alternatively or supplementary to message delivery via licensed wireless spectrum. Advantageously, the alert system can provide access to certain local areas not covered or insufficiently covered by licensed spectrum and can provide opportunistic traffic offloading from licensed spectrum.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: October 20, 2020
    Assignee: ALCATEL LUCENT
    Inventors: Suzann Hua, Yigang Cai
  • Patent number: 10805838
    Abstract: Embodiments of the present disclosure relate to a method for obtaining information and resources of SDN networks of different operators and a corresponding device. The method includes UE of the first operator transmits a resource request to an SDN controller of the first operator. Afterwards, the SDN controller of the first operator transmits a resource request to an SDN controller of the second operator via an interface newly introduced by the present invention, obtains information of the SDN network of the second operator and utilizes resources of the SDN network of the second operator based on the information. The present invention also discloses a device capable of implementing the above method.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: October 13, 2020
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Xin Qu, Yigang Cai
  • Patent number: 10791452
    Abstract: An apparatus, e.g. a mobile computing device, directs presence information toward a presence server (PS). The presence information includes public-safety (PuSa) specific proximity-based services (ProSe) information. The apparatus also directs to the PS a request to subscribe to PuSa-specific ProSe information of a target ProSe presentity, the request including a dedicated PuSa service ID. The apparatus may discover user equipment (UE) of the target presentity only on the condition that the PS returns the presence information of the target presentity.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: September 29, 2020
    Assignee: Alcatel Lucent
    Inventors: Suzann Hua, Yigang Cai
  • Patent number: 10779283
    Abstract: The present disclosure generally discloses a wireless resource sharing mechanism configured to support sharing of physical wireless resources of a wireless interface of a wireless access device. The wireless resource sharing mechanism is configured to support sharing of physical wireless resources of a wireless interface of a wireless access device in order to support Machine-Type Communications (MTCs). The wireless resource sharing mechanism is configured to support sharing of physical wireless resources, of a wireless interface of a wireless access device, between MTC traffic of MTC devices and non-MTC traffic of non-MTC devices (referred to herein as legacy traffic of legacy devices). The wireless resource sharing mechanism is configured to support sharing of physical wireless resources, of a wireless interface of a wireless access device, within a scheduling time interval of the wireless interface of the wireless access device.
    Type: Grant
    Filed: May 31, 2016
    Date of Patent: September 15, 2020
    Assignee: Nokia Technologies Oy
    Inventors: Yigang Cai, Yang Yang
  • Patent number: 10757149
    Abstract: Embodiments described herein provide usage authorization control for group communications. In one embodiment, a network element identifies a group communication for an end user of User Equipment (UE), and identifies a group ID for the group communication. The network element retrieves a user profile of the end user from a Home Subscriber Server (HSS), and determines from the user profile and the group ID whether the end user is a member of the group. The network element provides, on the condition that the end user is a member of the group, the group ID to the HSS and receives group usage rules for the group from the HSS. The network element allows the group communication on the condition that the group communication is permitted by one or more of the group usage rules.
    Type: Grant
    Filed: December 8, 2014
    Date of Patent: August 25, 2020
    Assignee: Nokia of America Corporation
    Inventors: Suzann Hua, Yigang Cai
  • Publication number: 20200260331
    Abstract: Apparatuses and methods for resource allocation. A method includes: obtaining a future traffic estimate in a data network of a cellular radio network based on past traffic in the data network; requesting a pool of session resources from a border gateway of the data network based on the future traffic estimate; and allocating repeatedly dedicated resources including an IP address and a port of the border gateway for each session from the pool of session resources.
    Type: Application
    Filed: January 7, 2020
    Publication date: August 13, 2020
    Inventors: Guanhua GUO, Yigang CAI, Zhi WANG
  • Publication number: 20200221273
    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: Application
    Filed: September 19, 2017
    Publication date: July 9, 2020
    Applicant: Nokia Solutions and Networks Oy
    Inventors: Dongsheng Fan, Yigang Cai
  • Publication number: 20200205169
    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: May 3, 2017
    Publication date: June 25, 2020
    Applicant: Nokia Solutions and Networks Oy
    Inventors: Yigang Cai, Huy Thang Pham
  • Publication number: 20200169951
    Abstract: Systems and methods of a network that implements network slicing. In one embodiment, the system includes an account charging server that determines a plurality of charging rules for a UE that are each mapped to a different network slice of the network, a policy control server that identifies the charging rules, and a slice selection server that selects a network slice for the UE based on the charging rules. The system further includes an interface between the policy control server and the account charging server that supports a transaction based on Diameter protocol that includes a request/response. A first Attribute Value Pair (AVP) is defined for the response to identify a charging rule, and a second AVP is defined for the response to identify a network slice that is mapped to the charging rule.
    Type: Application
    Filed: June 29, 2017
    Publication date: May 28, 2020
    Inventors: Yigang Cai, Ranjan Sharma
  • Patent number: 10602000
    Abstract: Apparatus and methods for policy decisions regarding a service data flow enabled for service chaining. One embodiment comprises a policy control element configured to make policy decisions for a session. The policy control element communicates with an offline charging system. The policy control element detects a new service added to the service chain implemented for the service data flow, and transmits a charging rules request to the offline charging system responsive to detecting the new service being added to the service chain. The policy control element receives a response from the offline charging system that includes offline charging rules that are mapped to the new service of the service chain, makes a policy decision for the service data flow based on the offline charging rules, and transmits the policy decision to a policy enforcement element.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: March 24, 2020
    Assignee: Nokia of America Corporation
    Inventors: Ranjan Sharma, Yigang Cai
  • Publication number: 20200084835
    Abstract: Embodiments of the present disclosure relate to a method and corresponding device for controlling a remote UE to access to a network via a relay UE. The method includes: the remote UE receives, from a proximity service function, an access level configuration message, which contains access level allocated to the remote UE; receiving access restriction configuration information from the relay UE via a PC5 interface; when an application on the remote UE initiates a request for accessing the network, rejecting the request for accessing the network if the access level of the remote UE is matched with the access restriction configuration information. A device capable of implementing the above method is also disclosed.
    Type: Application
    Filed: December 20, 2017
    Publication date: March 12, 2020
    Inventors: Zhi WANG, Yigang CAI
  • Publication number: 20200077245
    Abstract: Systems, methods, and software for handling random access procedures. In one embodiment, an access network element that stores an MTC reservation pattern that defines at least one MTC-On interval where MTC is allowed, and defines at least one MTC-Off interval where MTC is prohibited. During an MTC-On interval, the access network element receives preambles for random access procedures from MTC devices, and performs the random access procedures for the MTC devices in response to the preambles. The access network element detects a transition from the MTC-On interval to a next MTC-Off interval, and determines whether the random access procedures for the MTC devices will complete before the transition. If not, the access network element modifies the MTC reservation pattern to expedite completion of the random access procedures.
    Type: Application
    Filed: May 3, 2017
    Publication date: March 5, 2020
    Applicant: Nokia Solutions and Networks Oy
    Inventors: Yigang Cai, Huy Thang Pham
  • Publication number: 20200068074
    Abstract: Systems, methods, and software for selecting a network slice for User Equipment (UE) in a network that is partitioned into network slices. In one embodiment, a slice selection server receives an attach request intiated by the UE to attach to the network, sends a request to a policy control server to obtain a slice selection policy for the UE, and receives a response from the policy control server indicating a plurality of charging rules for the UE that are each mapped to a different one of the network slices. The slice selection server selects a network slice for the UE based on the charging rules, and sends an attach response to the UE that includes a network slice identifier (ID) for the network slice selected for the UE.
    Type: Application
    Filed: June 29, 2017
    Publication date: February 27, 2020
    Inventors: Yigang Cai, Ranjan Sharma
  • Publication number: 20200053628
    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: Application
    Filed: November 24, 2017
    Publication date: February 13, 2020
    Inventors: Zhi WANG, Yigang CAI