Panasonic Intellectual Property Corporation of America

Panasonic Corporation

Sun Patent Trust

Matsushita Electric Industrial Co., Ltd.

Optis Wireless Technology, LLC

Panasonic Intellectual Property Management Co., Ltd.

Panasonic Intellectual Property Coporation of America

Shinkichi Ikeda

Jens Bachmann

Jun Hirano

Takashi Aramaki

Kilian Weniger

Takahisa Aoyama

Genadi Velev

Makoto Funabiki

Keigo Aso

Hong Cheng

Masayuki Kumazawa

Chan Wah Ng

Taisuke Matsumoto

Hirokazu Kobayashi

Toyoki Kawahara

Hidenori Matsuo

Tien Ming Benjamin Koh

Chun Keong Benjamin Lim

Mohana Dhamayanthi Jeyatharan

Jon Schuringa

Ryuji Sugizaki

Seigo Nakao

Takashi Tamura

Suguru Fujita

Kenichi Maeda

Pek Yew Tan

Ushio Sangawa

Yoshiko Saito

Shinichiro Ueno

Tomoharu Kaneko

Sampath Swaroop Kumar

Mikihito Sugiura

Terufumi Takada

A method performed by a connectivity-related network entity is provided. The method includes: receiving, from a Packet Data Network (PDN) gateway and a Serving Gateway (SGW), a Short Message Service (SMS) message to be sent in a downlink; determining to use a control plane only, out of the control plane and a user plane, for transferring the SMS message; transmitting a trigger message to a user equipment to initiate establishment of connectivity with the user equipment via the control plane only and not via the user plane, wherein the user equipment starts a timer when the establishment of the control plane connectivity is initiated; receiving a response message from the user equipment; encapsulating the SMS message in a security protected Non-Access Stratum (NAS) message; and transmitting the security protected NAS message to the user equipment, in receipt of which the user equipment stops the timer.

Short message transmission and handover procedures

The invention relates to a method for discovering a home agent serving a mobile node upon the mobile node changing its mobility management scheme in a packet-switched network and the implementation of such method in a mobile node or home agent. In order to propose a home agent discover scheme that maintains session continuity in a seamless manner upon a mobile node changing its mobility management scheme, a mobile node comprises information on its location prior to changing the mobility management scheme to one of the first signaling messages transmitted upon changing the mobility management scheme (home agent discovery message). The receiving node uses this information to identify the home agent serving the mobile node or to provide a hint to the home agent where the mobile node is registered in a response message to the mobile node.

Home agent discovery upon changing the mobility management scheme

The present invention relates to an improved method for handover of a mobile node from E-UTRAN to UTRAN in a scenario where SMS is the only service of the mobile node. The improved handover method allows saving radio resources by establishing the signalling connection for SMS exchange in the target network, and avoiding the data connection in the target network, since it is not used. The MME takes the decision to establish or not the data connection in the target UTRAN, and accordingly instructs the SGSN and UE to set the corresponding PDP contexts for the data connection to a 'preserved' state, so as to avoid the establishment of same. Embodiments further relate to improved SMS delivery for IDLE mode UEs that activate ISR so as to avoid the involvement of the MSC server. Instead, packet-switched domain nodes are to be involved only.

An offloading method comprising the steps of: when the mobile terminal starts offloading in a first network, transmitting, by the mobile terminal, a first message to a mobility management device performing mobility management of the mobile terminal in a second network, the first message including information indicating that the offloading is started; transmitting, by the mobility management device, a second message to the mobile terminal, the second message including selection information in the second network, the selection information being for selecting, on basis of the first message, as to in which network offloading is to be performed; and deciding, by the mobile terminal, whether the offloading is to be maintained in the first network or whether new offloading is to be performed in the second network on a basis of the selection information included in the second message and judgment information in the first network that the mobile terminal has.

Method and apparatus for mobile terminal connection control and management of local accesses

With the deployment of the Mobile Routers, some of the mobile devices would access the IP services, e.g. Remote Local IP Access (LIPA), via the local connections provided by the Mobile Router. In such cases, the mobile devices may be detached from the 3GPP access, and thus lose the capability of receiving certain services, e.g. CS domain related services. This invention presented a solution to allow the mobile device to continue enjoying the services provided via 3GPP access by placing the mobile device into a special state and binding Mobile Router's context with the mobile device's context. In this way, the mobile operator's core network would be able to trigger the mobile device to receive the CS service even its 3GPP access connections are removed.

Communication system, mobile terminal, router, and mobility management entity

Disclosed is a technique to enable a user equipment at a remote place to perform local IP access to a locally-accessible network with simpler procedure and such a configuration while achieving the efficiency of costs and facility. According to the technique, a network (LIA-PDN) capable of dealing with a local IP access by a user equipment (UE) is placed on a core network. When the UE establishes a PDN connection with the LIA-PDN, the UE simultaneously transmits information concerning the LIA domain networkas well, to which the UE wants a local IP access. On the basis of this information, the LIA-PDN establishes a PDN connection with the LIA domain network, and the LIA-PDN transfers a packet, whereby the UE can access the LIA domain network via these PDN connections.

Communication system, user equipment and communication node

Growing community of inventors

Kanagawa, Japan

Shinkichi Ikeda