Nec Corporation

Ippei Akiyoshi

Yasuhiro Mizukoshi

Nobuhiko Itoh

Hiroaki Aminaka

Makoto Fujinami

Yoshiyuki Yamada

Takanori Iwai

A communication system includes a first radio access apparatus, a second radio access apparatus, and a radio terminal that is enabled to simultaneously communicate with the first radio access apparatus and the second radio access apparatus. The communication system acquires service characteristic information that indicates a characteristic of a service provided to the radio terminal and determines a type of a communication path for downlink user data used for provision of the service to the radio terminal, from among a plurality of types of communication paths, based on the service characteristic information.

Communication system, radio-access apparatus, radio communication terminal, and control method therefor

A communication apparatus for controlling a received packet includes a memory configured to store program instructions, and a processor configured to execute the program instructions to select, whether the received packet is controlled with one of the communication apparatus or an external control apparatus, based on an input port of the received packet, send a notice of detecting a new packet flow to the external control apparatus when the processor selects to control the received packet with the external control apparatus, and set a processing rule for processing the received packet to the communication apparatus when the processor selects to control the received packet with the communication apparatus.

Communication system, communication device, controller, and method and program for controlling forwarding path of packet flow

A communication system includes a first node to forward a received packet according to a path identifier included in an additional header, which corresponds to a forwarding path of the received packet, a second node placed in an edge of network, configured of the first node, and to process the received packet according to a packet processing rule, and a controller to send, to the second node, the packet handling rule which indicates to add the additional header to the received packet, wherein the second node requests the packet processing rule to the controller when the packet processing rule for the received packet is not set in the second node.

Communication system, control device, communication method, and program

A communication system and a base station are provided that make it possible to flexibly increase/decrease a U-plane processing function of a communication apparatus. A communication system in which a logical path is configured in a network to perform communication, comprises: second gateways, which are deployed for a plurality of first gateways, respectively; a transport network, which the logical paths configured between a base station and the second gateways pass through; and a control apparatus that controls packet forwarding in the transport network, wherein the control apparatus controls the transport network so that a logical path to which a packet belongs is identified and the packet will be forwarded to the second gateway corresponding to the identified logical path.

Communication system and base station

A communication system includes a network device to be used for packet handling; and a controller capable of sending, to network device, a packet handling rule according to a first protocol. The network device classifies, based on a condition, indicative of a scope under which the controller is capable of controlling the network device, whether to handle the packet according to the packet handling rule sent from the controller or to handle the packet according to a table entry that the network device autonomously sets based on a second protocol.

A communication system, in which a mobile terminal uses a data path that was generated with an ISP network by a base station in a home network to access a NW via the ISP network, includes an authentication means and connection control means in the ISP network. The base station accepts an access request from the mobile terminal and transmits information relating to the base station and the mobile terminal to the connection control means. The authentication means determines based on the information whether a linking service that connects to the home NW without traversing the ISP network can be provided to the mobile terminal, and if the linking service can be provided, notifies this information to the connection control means. Based on this notification, the connection control means requests the base station to generate a data path for providing the linking service, and the base station generates the data path.

Communication system, connection control apparatus, mobile terminal, base station control method, service request method, and program

A base station () is connectable to a mobile station () by a plurality of Radio Access Technologies (RATs) including first and second RATs. The base station () is configured to be able to use a communication path () that passes through a first upstream network () corresponding to the first RAT, when the mobile station () performs communication via the second RAT. This enables, for example, efficient use of the upstream networks when the Multi-RAT base station () supports a plurality of upstream networks.

Radio communication system, base station, communication method, mobile station, and computer-readable medium

A new traffic offloading technique in a communication system is provided. A communication apparatus according to the present invention includes: a first means for selecting, from among a plurality of network nodes including a first network node and a second network node, the second network node for a terminal capable of autonomous communication with a communication-counterpart equipment, wherein the first network node performs predetermined signal processing in a first network and the second network node operates a function of the first network node through a virtual machine in a second network; and a second means for sending communication data related to the terminal to the second network node selected.

Communication apparatus, communication method, communication system, and program

A technique enabling diverse communication quality control for a communication service is provided. A communication apparatus includes a first means for storing a parameter notified from a control apparatus, wherein the control apparatus can send a control signal related to the communication path to the communication apparatus; and a second means that can perform communication quality control on a packet, based on a quality class of the communication path corresponding to the packet and the parameter corresponding to the communication path.

Communication apparatus, control apparatus, communication method, control method, and program

A technique enabling diverse communication quality control for a communication service is provided. A communication apparatus according to the present invention is a communication apparatus that performs communication over a communication path set up in a network, including: a first means for identifying the communication path corresponding to a packet; and a second means for adding quality information to the packet, wherein the quality information is selected from among a plurality of pieces of quality information associated with a quality class of the identified communication path.

Communication apparatus, control apparatus, communication system, communication method, control method, and program

A communication system, a serving gateway, a communication method, and a base station are provided that make it possible to flexibly increase/decrease a U-plane processing function of a communication apparatus. A communication system in which a logical path is configured in a network to perform communication, comprises: second gateways (--), which are deployed for a plurality of first gateways (--), respectively; a transport network (), which the logical paths configured between a base station () and the second gateways pass through; and a control apparatus () that controls packet forwarding in the transport network, wherein the control apparatus controls the transport network so that a logical path to which a packet belongs is identified and the packet will be forwarded to the second gateway corresponding to the identified logical path.

Communication system, serving gateway, communication method therefor, and base station

A communication system, a communication apparatus, a control method, and a control apparatus are provided that make it possible to flexibly increase/decrease a U-plane processing function of a communication apparatus. A communication system in which a logical path () is set up in a network to perform communication, comprises: a control plane () for the logical path; and a control apparatus () that, in response to a request from the control plane, selects from communication equipment resources a communication equipment () to perform user-plane processing in connection with data transmission through the logical path, and sets an operation rule related to the user-plane processing in the selected communication equipment.

Communication system, communication apparatus, and control method and control apparatus thereof

A mobile communications system according to an aspect of the present invention includes a control apparatus () arranged in a radio access network () and a policy supply system () arranged in a core network (). The policy supply system () is configured to supply the control apparatus () with a first control policy used in control related to state transition of a mobile terminal () between a CONNECTED state and an IDLE state. The control apparatus () is configured to perform the control related to the state transition between the CONNECTED state and the IDLE state for the mobile terminal () based on the first control policy. This enables, for example, to reduce the number of signalings which are caused due to repetition of state transition (CONNECTED-IDLE transition) of the mobile terminal and are to be processed by the core network, based on the determination by the core network.

Mobile communications system, control apparatus, policy supply system, state transition control method, and policy supply method

A technique that can enhance the effectiveness of traffic offloading is provided. A base station of the present invention includes: a first means for selecting an MME (Mobility Management Entity), based on information included in a message sent from a terminal; and a second means for sending a connection request sent from the terminal to the selected MME, wherein the first means is able to select a virtual MME that operates a function of the MME through a virtual machine, based on the information included in the message.

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Tokyo, Japan

Ippei Akiyoshi