Ntt Docomo, Inc.

Ashiq Khan

Takuya Shimojou

Motoshi Tamura

Shigeru Iwashina

Toshihiro Suzuki

Motonari Kobayashi

Malla Reddy Sama

Srisakul Thakolsri

Joan Triay Marques

Masayoshi Shimizu

Takashi Shimizu

Atsushi Minokuchi

Takeo Yamasaki

Wolfgang Kiess

David Perez Caparros

Hidenori Asaba

Tetsuya Nakamura

Takahiro Yamazaki

Irfan Ali

Yusuke Takano

Bertrand Souville

Masaaki Kosugi

Tomoki Shibahara

Wataru Takita

Sergio Beker

Daisuke Fujishima

Youhei Katayama

Ratapon Satrusajang

Kazuaki Obana

A radio communication system includes user equipment, a call control apparatus, and a plurality of communication apparatuses, wherein each communication apparatus belongs to one of a plurality of groups, wherein the user equipment transmits, to the call control apparatus, a first access request signal including a group specifying information for specifying one group and a communication destination identifier, wherein the call control apparatus transmits, to the communication apparatus belonging to the one group specified by the group specifying information, a second access request signal including the communication destination identifier, and wherein the communication apparatus establishes a communication path between a communication destination indicated by the communication destination identifier included in the second access request signal and the user equipment.

Radio communication system and communication method

An NSSF () includes: a selection unit selecting a slice corresponding to a service related to a request from a terminal () and a target processing server corresponding to the slice based on slice correspondence information including information where a slice, a processing server corresponding to the slice, and a service used by a terminal are associated with one another; and a notification unit notifying an AMF () of selection result including information regarding the slice and target processing server. The AMF includes: a determination processing unit determining whether the AMF is a target processing server based on information on the target processing server in the selection result information, and performing processing for a service when the AMF is the target processing server, or transferring a request for processing for a service to the target processing server when the AMF is not the target processing server.

Communication control method and communication system

A mobile communication system is a mobile communication system that controls a connection with a slice which is a virtual network generated on a network infrastructure, and includes a request receiving unitthat receives a request for a connection with a slice of a control target of an AMFfrom a UEused by a user and a selection information transmitting unitthat controls, in response to the reception of the request, the connection of the UEwith the slice, acquires selection information for selecting a slice of a control target of another AMFdifferent from the AMF, and transmits the selection information to the terminal.

Information notification method and mobile communication system

A slice management system () is a slice management system managing slices that are virtual networks generated on a network infrastructure, comprises a memory storing a priority list in which slices of connection destination candidates of a UE () are aligned in order of priority levels and, in a case in which a connection request for a slice from the UE () is acquired, determines a slice to which UE () is to be connected on the basis of the priority list stored in the memory.

Slice management system and slice management method

In a communications system (A), a communication service which is utilized by UE () is specified from among a first communication service and a second communication service, an address of a SGW () corresponding to a service type of the first communication service is retrieved when the specified communication service is the first communication service with reference to information in which the specified communication service and the address of the SGW () that transmits and receives data for utilizing the communication service are correlated with each other, and a SGW () other than a first communication control device is retrieved when the specified communication service is the second communication service.

Communication control device selection method and communications system

A virtual server for executing a communication process is implemented on virtualization resources without being inefficient even when different virtualization resource management schemes are included. A management system included in a mobile communication system is configured to include an NFVI which is virtualization resources including a physical server in which a VNF to execute a communication process is generated and includes a VNFM for managing the VNF, a VIM for managing the virtualization resources of the NFVI, and an orchestrator for managing all the virtualization resources of the NFVI, wherein the orchestrator includes a virtual server generation request section configured to input detailed information for implementing the VNF retained by the VNFM, rewrite the input detailed information according to a virtualization resource management scheme by the VIM, and request the VIM to generate the VNF.

Management system, overall management node, and management method for managing virtualization resources in a mobile communication network

Leakage of detailed information for implementing a virtual server to execute a communication process on virtualization resources is prevented. There is provided a management system () included in a mobile communication system () configured to include an NFVI () which is virtualization resources including a physical server generated by a VNF () to execute a communication process, and the system includes a VNFM () for managing the VNF (), a VIM () for managing the virtualization resources of the NFVI (), an orchestrator () for managing all the virtualization resources of the NFVI (), wherein the VNFM () includes a retention section () configured to retain detailed information for implementing the VNF () and a virtual server generation request section () configured to request the VIM () to generate the VNF () using the detailed information.

Management system, virtual communication-function management node, and management method for managing virtualization resources in a mobile communication network

An integrated control device, to implement automatic address assignment in a path spanning two or more administrative domains, and to implement communication between a plurality of administrative domains, acquires definition information that defines protocols used in each administrative domain from an inter-administrative domain communication protocol stack list table, acquires available addresses of each protocol in each administrative domain which can be used for communication between the respective administrative domains from an available address range table, acquires a communication route from a starting point administrative domain to an ending point administrative domain, specifies domains that use the respective protocols on the communication route by using the definition information, assigns protocol information such as available addresses of each protocol between the specified domains by using an available address range table and notifies the assigned address to each domain.

Domain control method and domain control device

A slice allocating method capable of dynamically changing a service and a slice to be allocated to the service is provided. An OSS/BSS holds allocation service information in which a service to which a slice has been allocated is associated with the slice. Further, a request reception unit of the OSS/BSS receives an SLA-SL which is a requirement of a function. An allocation determination unit determines a slice having an SLA-SL corresponding to a service requirement of the received service. When the service of the slice determined by the allocation determination unit is the same as the service associated with the slice in advance, an allocation request unit reallocates the service to the determined slice.

Service allocation determining methid

A service allocation determination device and service allocation determination method that can allocate a service to a slice without wasteful use of resources. In a BSS/OSS, a service request receiving unit receives service requirements and information indicating functions for implementing a service. An allocation determination unit, using the service requirements and slice information, determines whether to allocate the service to an existing slice or to a new slice. An allocation request unit makes a request to allocate the service to the slice determined by the allocation determination unit. In this case, because the BSS/OSSdetermines whether to allocate the service to an existing slice or to a new slice based on the service requirements and the attribute of the existing slice, the service can be allocated to a slice without wasteful use of resources.

Service allocation determination device and service allocation determination method

A slice management system and a slice management method that can dynamically adjust the amount of resources when the amount of resources is insufficient to create a slice. A storing unit of a NFVO stores slice utilization status information. In a BSS/OSS, an allocation determination unit determines to create a new slice or extend an existing slice, and when resources for creation of a new slice or extension of an existing slice are insufficient, a resource change determination unit determines a slice for reduction based on the slice utilization status information. A resource request unit of the NFVO reduces resources of the determined slice.

Slice management system and slice management method for dynamically adjusting resources allocated to a slice based on a resource utilization status

A virtual resource management node to seamlessly migrate a virtual machine with less influence on services in an NFV environment. A VIM is a VIM for managing each virtualized resource that is included in an NFV environment including virtualized resources including a physical machine in which a virtual machine having a VNF being a virtualized communication function is implemented, and the VIM includes a switching unit for switching a network flow from a virtual machine of a migration source to a virtual machine of a migration destination, or switching a system between an Active (ACT) system virtual machine of a migration source and a Standby (SBY) system virtual machine of a migration destination.

Virtualized resource management node and virtual migration method for seamless virtual machine integration

A method for implementing an entity of a network by virtualizing said network entity and implementing it on one or more servers each acting as an execution unit for executing thereon one or more applications running and/or one or more virtual machines running on said execution unit, each of said application programs or virtual machines running on a server and implementing at least a part of the functionality of said network entity being called a virtual network function VNF module, wherein a plurality of said VNF modules together implement said network entity to thereby form a virtual network function VNF, said method comprising the steps of: obtaining m key performance indicators (KPI) specifying the required overall performance of the VNF, obtaining n performance characteristics for available types of execution units, determining one or more possible deployment plans based on the obtained m KPI and n performance characteristics, each deployment plan specifying the number and types of execution units, such that the joint performance of VNF modules running on these execution units achieves the required overall performance of the VNF.

Method and apparatus for network virtualization

In a wireless communication terminal, the other terminal existence confirmation section broadcasts a confirmation message at fixed intervals and receives a response message. The topology information management section computes the topology of the whole network to which the wireless communication terminal itself belongs, on the basis of the topology information on the network received at fixed intervals from other terminals. The path management section derives an optimum path to the terminal of the transmission destination. The QoS information collection section issues a communication start request instruction and, when a QoS information collect request instruction has been issued, unicasts a QoS request packet on the path and receives a reply QoS request packet. The judgment section adopts the path as the communication path when QoS information satisfies a predetermined quality standard.

Wireless communication terminal and QoS information collection method

A mobile terminal configured to constitute an ad hoc network together with a plurality of other terminals, the mobile terminal includes a packet relay unit configured to execute a relay operation of relaying a packet transferred between the other terminals. A packet transmitter is configured to execute a transmission operation of transmitting a packet generated in the mobile terminal to any one of the other terminals. A power supply manager is configured to execute a power supply control operation. A coordination controller is configured to cause the relay operation and the power supply control operation to be coordinated with each other, and to selectively control whether each of the relay operation, the transmission operation and the power supply control operation is executed.

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Chiyoda-ku, Japan

Ashiq Khan