Panasonic Corporation

Panasonic Intellectual Property Corporation of America

Mohana Dhamayanthi Jeyatharan

Chan Wah Ng

Jun Hirano

Chun Keong Benjamin Lim

Pek Yew Tan

Keigo Aso

Tien Ming Benjamin Koh

Takahisa Aoyama

Shinkichi Ikeda

Hong Cheng

Tien-Ming Benjamin Koh

Disclosed is a technique for enabling a device that needs to send high priority and high bandwidth user plane traffic to send the user plane traffic even in the case where a group bandwidth has an upper limit in group-based communication. According to the technique, when an MTC device that is to send high priority and high bandwidth user plane traffic sends a service request to a network node (P-GW), the network node allows use of a minimum bandwidth bearer in the case where the upper limit of the group bandwidth is exceeded. The MTC device sends a traffic sending request to an MTC servervia the bearer. The MTC server stops traffic of an appropriate other MTC device, to secure a bandwidth for the MTC device having the high priority and high bandwidth user plane traffic.

Communication device, network node, and communication server

Disclosed is a technique to eliminate wasted tunneling encapsulation processing during redirection of a packet. According to the technique, when a packet of a first connection passing through a local mobility anchor ('LMA')and a mobile access gateway ('MAG')using a first prefix of an interfaceof a mobile node (&#x201c;MN&#x201d;)is redirected to a second connection passing through a LMAand a MAGusing a second prefix of an interfaceof the MN, a redirection tunnel Tis established between the LMAand the LMA. When the MAGknows the first prefix, the LMAencapsulates a packet addressed to the first prefix that is redirected via the tunnel T to be addressed to the MAGfor transferring.

Redirection method, redirection system, mobile node, home agent, and proxy node

A path switching system is provided, in which when UE has been offloaded from a first PDN-GW to a second PDN-GW, if there is an additional connection of the UE to the first PDN-GW, processing related to the additional connection can be performed on the UE side. The system includes: a control unit for sending a mobile terminal a message including information indicative of having switched relay devices, which relay a packet between the mobile terminal and a communication device, from a first relay device to a second relay device; and the mobile terminal for determining whether there is an added path other than part of a path from the mobile device before movement to the communication device and capable of being managed by the control unit, established between the mobile terminal and the first relay device, and when there is the added path, performing processing on the added path.

Path switching system, path switching method, and mobile terminal

Disclosed is a technique for enabling a mobile terminal, which is capable of using a plurality of communication routes for communication with a correspondent node, to select an appropriate communication route to communicate with the correspondent node. According to the technique, the mobile terminal (UE/MNB) requests a predetermined network node (P-GW) to detect whether or not the correspondent node (CNB) exists in the same domain. The P-GW monitors a packet sent from the CN to the UE/MN and, when detecting the packet, determines whether or not the CN exists in the same domain. In the case of determining that the CN exists in the same domain, the P-GW reports information that the CN exists in the same domain, to the UE/MN. The UE/MN selects an interface used for communicating with the CN, based on the reported determination result.

Communication system, mobile terminal, network node, and base station apparatus

A technique is disclosed, according to which a race condition between a PMIPv6 binding by a PBU message of PMIPv6 and a CMIPv6 binding by a BU message of CMIPv6 can be resolved. MNhas a plurality of radio communication interfaces, and a first interface is connected to MAGof a home PMIPv6 domain, for instance. In case the connection of a second interface is changed from MAGof a home PMIPv6 domain to ARof a CMIPv6 domain, a BU messageis transmitted from the second interface to LMA/HA, and identification information of this BU message is notified to MAG from the first interface. By adding time information to this identification information and by transmitting it to LMA/HA, MAG can identify transmission time of the BU message (i.e. relative order with the other messages) from this time information.

Mobile terminal, network node, and packet transfer management node

Disclosed is a technique for surely supporting multihoming for a mobile terminal (mobile node) moving in a local mobility domain. A mobile node (MN)connects via an IFto a mobile access gateway (MAG)that supports multihoming, and further attempts to connect via an IFto a MAGthat does not support multihoming. Under these conditions, according to this technique, when the MN recognizes that the MAGdoes not support multihoming, the MN notifies a local mobility domain that the MAGdoes not support multihoming if connection with the MAGis not yet established, and notifies the local mobility domain of information on a connection to a local mobility domain other than the MAG(connection with the MAG) if the connection with the MAGis already established.

Mobile terminal and network node

A technology is disclosed for providing a connection status notifying method and the like that can infer that a new connection will become usable shortly based on a predetermined action, and give notification thereof. The technology includes a step at which a mobile nodereceives information stating that connection will be broken from a base station that is a current connection destination, a step at which the mobile node starts a predetermined process with a base station that is a new connection destination, and a step at which the mobile node generates a predetermined notification message and transmits the generated predetermined notification message when the predetermined process is judged to be completed, the predetermined notification message being used to give notification to a predetermined component part within the mobile node or to another communication node that a connected state is established with the base station of the new connection destination at an early stage.

Connection state reporting method and mobile terminal used in the method

A technology is disclosed with which a mobile terminal moving in a PMIP domain receives various types of prefixes and selects a type of an address to be configured, and route optimization is performed without adding a signaling load on the PMIP domain. According to the technique, when connecting with a home domain, a MN () requests a plurality of prefixes. When a MAG () makes an AAA server () authorize the MN and receives a notification instruction of the plurality of prefixes from the AAA server, the MAG 320 makes a notification of the plurality of prefixes with a RA message (), for example. The MN configures a plurality of addresses (for example, a PMIP address including a PMIP domain prefix or a global address including an on-link prefix) from the plurality of prefixes received and notifies the MAG of the same. The MAG registers a plurality of bindings relating to the plurality of addresses with a LMA ().

Communication control method, network node, and mobile terminal

A technology is disclosed for reducing the burst of DAD messages which may be triggered due to the change of the network prefix when using the technique of the neighbor discovery proxy. According to this technology, in roaming from the access network linkto the access network link, MRreceives advertisement of a new prefixfrom AR. MRselects and informs, for example only MR, that it is necessary to change the prefix. Thus, MRand VMNconfigure new addresses, respectively. When address configuration is completed at the mobile network of MR, MRinforms another MRthat it is necessary to change the prefix, and then MRand VMNconfigure new addresses, respectively. This can prevent DAD messages generated along with the address configuration from flocking in a short period.

Apparatus for reducing signalling data bursts in mobile network

A technique is disclosed to decrease unnecessary routing during communication between a mobile node and a correspondent node in case a home agent of the mobile node is a mobile home agent. According to this technique, HApositioned in a home networkand HAof MNare included. In a communication system, where HAis a mobile home agent, and a mobile networkof HAis hierarchized under the home network, HA, which is a home agent, discovers HApositioned in the home networkwhen it is detected that it is away from the home networkand delegates binding cache entry of MNunder its own management to HAso that HAacts as a home agent for MN

Communication system and mobile home agent

There is disclosed a technique which can detect a packet routing loop (in particular, a nesting loop formed by MRs (mobile routers). According to this technique, an MRconnected as a subordinate to an MRtransmits a BU (Binding Update) message, to which added is an ARO (Access Router Option) including an address of a router (MR) connected at present, to an HA (Home Agent)to which it pertains. Moreover, an MRis connected as a subordinate to the MRand, when connected to the MR, the MRtransmits a BU message, to which added is an ARO including an address of the MR, to the HA. At this time, the MRalso transmits a BU message, to which added is an ARO including an address of the MR, to the HA. Thus, the HAcan detect a routing loop formed by connectionsand

Growing community of inventors

Singapore, Singapore

Mohana Dhamayanthi Jeyatharan