摘要:
A positioning server device comprises: an input unit which receives measurement information of radio waves which are transmitted between an access point and a client; a radio wave map administration unit (10) which administers radio wave map data which denotes an estimation of a correspondence relation between the radio wave measurement information and a spatial location; and a positioning unit (13) which positions the location of the client based on the radio wave measurement information and the radio wave map data. The radio wave map administration unit (10) administers first map data which relates to a fixed positioning range where it is possible for a client to be positioned to be present conventionally, and second map data which relates to an extended positioning range wherein a possibility arises that the client to be positioned may be present according to particular conditions, as radio wave map data.
摘要:
The invention relates to a method for paging a group of MTC devices, and for transmitting parameter information to the MTC devices using the paging mechanism. MTC devices are grouped together and a different group ID per group to which the MTC device belongs is assigned to the MTC device. A specific group paging resource indication is determined for each group wherein each MTC device is assigned one of the group paging resource indications. The network pages MTC devices of a group by transmitting a paging message at the corresponding channel resources and including the corresponding group ID. Additionally, the group paging resource indications of several groups of MTC devices can be aligned in such a way with the transmissions and re-transmissions by the network, that the different groups respectively receive the transmission and re-transmissions of the paging message.
摘要:
In a mobile communication system utilizing Mobile IP, information on the access network is exchanged between access routers. And when a mobile terminal performs a handover, the previously exchanged information on the neighbor access routers and the access network information are provided to the mobile terminal. By so doing, the mobile terminal can determine a destination access router in advance, enabling to realize an efficient handover processing.
摘要:
A home gateway device having a home agent function selects communication interfaces other than the communication interface which has acquired network information for setting a home network to be home links, and appropriately sets the home link and a home agent by using the acquired network information, thereby reliably achieving the automatization of the device setting. Moreover, the home gateway device selects a link connected to a mobile terminal based on a mobile IP as home link, acquires existing home agent information from the mobile terminal and makes settings with this information, thereby setting the home link without compelling the mobile terminal to change its setting.
摘要:
A technology is disclosed that provides a handover method and the like capable of improving communication efficiency by detecting that a handover destination network is a home link at an early stage and reducing tunnel overhead between a mobile node and a home agent. The technology includes, when the mobile node performs a handover from an access router of a network before the handover to which the mobile node is currently connected, to an access router of another network that is a handover destination: a step of transmitting, by a mobile node 107, an address allocation request message for acquiring an address in the handover destination network allocated to the mobile node, to the access router of the handover destination; and a step of transmitting, by a home agent 106 of the mobile node, a notification message including information indicating a type of the address of the mobile node allocated by an address allocation server of the handover destination or the home agent as a result of the address allocation request message, to the mobile node via the access router before the handover.
摘要:
A mobile communication apparatus includes a registration request part (47) requesting a correspondent node to make location registration, a BU list memory (45) keeping a list of the correspondent nodes which have made the location registration, a handover detection part (41) detecting the start of a handover, and a registration cancellation processing part (46) canceling the location registration of the correspondent nodes in the BU list, upon notification of start of handover by the handover detection part (41), thereby reducing loss of packets transmitted from the correspondent nodes during the handover, because the route optimization applied to the correspondent nodes registered in the BU list at the start of the handover is canceled by requesting the cancellation to the correspondent nodes.
摘要:
A router, if judging that a routing function is impossible to execute, sends out a connection instruction message including the address of a terminal on a local network terminating the relaying flow, to another router to solicit switching. The router having received the connection instruction message starts a process for connecting with an external network while executing a process for link connection with a terminal, and then sends out a connection completion notice message when the connection with both the external network and the terminal is established. This process enables the router to switch a path rapidly.
摘要:
In a mobile communication system using a mobile IP, a mobile terminal determines a main home agent and a main home address. When the mobile terminal moved to a network different in service form, a home address for use on a moved-in domain network is registered as a primary care of address to the main home agent, thereby enabling communications by using the main home address even upon accessed from the other than the belonging domain network. This makes it possible to flexibly cope with an incoming call from the external by the use of a representative home address even on the Internet as a distributed network.
摘要:
A mobile communication apparatus includes a registration request part (47) requesting a correspondent node to make location registration, a BU list memory (45) keeping a list of the correspondent nodes which have made the location registration, a handover detection part (41) detecting the start of a handover, and a registration cancellation processing part (46) canceling the location registration of the correspondent nodes in the BU list, upon notification of start of handover by the handover detection part (41), thereby reducing loss of packets transmitted from the correspondent nodes during the handover, because the route optimization applied to the correspondent nodes registered in the BU list at the start of the handover is canceled by requesting the cancellation to the correspondent nodes.
摘要:
The invention provides an address information setting method such that when home agent information such as an address of a home agent, which is basic information for activating mobile IP protocol processing, is acquired, it is made possible to perform communication that satisfies requirements desired by a user or an application by starting mobile IP protocol processing using home agent information acquired according to an instruction of a user. In addition, it is possible to reduce the work burden on a user for making settings and provide a mobile terminal with high convenience by automatically acquiring home agent information on a link at a time specified by the user.