摘要:
A mobile terminal (10) is used in a network comprising a wide area cell and small cells included in the wide area cell. The mobile terminal (10) comprises: a basic communication functionality (12) for receiving offset information used for cell selection and offset correction information for correcting the offset information to increase ease of connection with a micro BS set by a user, both information being broadcasted from a macro base station; a inclination setting section (14) for accepting a setting for a priority home base station with which a user desires to preferentially establish a connection among a plurality of small cells; a offset information correction processing section (18) for correcting the offset information with the offset correction information when the priority home base station is detected; and a cell selection section (24) for performing cell selection based on reception quality with the added offset information. In this way, a user-specific inclination can separately be set for each mobile terminal and the amount of notification of information can be reduced.
摘要:
A terminal device (1) is provided with: a trigger judging section (6) judging whether an event trigger for performing handover from a macrocell to a CSG cell has occurred or not; a first measurement result reporting section (7) transmitting a first measurement result report which includes the PCI of a CSG cell for which an event trigger has occurred, to an eNB; a CGI detecting section (9) detecting the CGI of the CSG cell for which the event trigger has occurred, on the basis of measurement setting information transmitted from the eNB; and a second measurement result reporting section (10) transmitting a second measurement result report which includes the detected CGI, to the eNB. When event triggers have continuously occurred, a report transmission controlling section (13) controls transmission of the measurement result reports on the basis of the reception qualities of the CSG cells to reduce the frequency of transmission of the measurement result reports. Thereby, it is possible to control waste of wireless resources and prevent communication interruption from frequently occurring.
摘要:
A wireless communication system comprises an MME (70) which generates a white list in which CSG cells being accessible by a UE (10) are enumerated, an HeNB gateway (50) which decides based on the white list whether or not access is possible, and a home base station (30) (80) of the CSG cell. The UE (10) comprises a manual selection executing unit which accepts manual selection of a CSG cell, and requests the Mobility Management Entity to add the CSG cell to the white list; and a measurement report message generating unit which generates the Measurement report message attached with information indicating that the white list is being updated, if the CSG cell which has been accepted by manual selection is comprised in CSG cells to be included in the Measurement report message, and the selected CSG cell is not included in the white list stored in a white list storing unit. Thereby, there is provided a wireless communication system which can perform handover in which a manual selection process is appropriately reflected.
摘要:
A terminal device (1) is provided with: a trigger judging section (6) judging whether an event trigger for performing handover from a macrocell to a CSG cell has occurred or not; a first measurement result reporting section (7) transmitting a first measurement result report which includes the PCI of a CSG cell for which an event trigger has occurred, to an eNB; a CGI detecting section (9) detecting the CGI of the CSG cell for which the event trigger has occurred, on the basis of measurement setting information transmitted from the eNB; and a second measurement result reporting section (10) transmitting a second measurement result report which includes the detected CGI, to the eNB. When event triggers have continuously occurred, a report transmission controlling section (13) controls transmission of the measurement result reports on the basis of the reception qualities of the CSG cells to reduce the frequency of transmission of the measurement result reports. Thereby, it is possible to control waste of wireless resources and prevent communication interruption from frequently occurring.
摘要:
When a mobile terminal transmitting/receiving a packet using a plurality of IP address types performs a handover to an access network (single address type connection network) permitting transmission/reception of a packet using a single IP address only, an IP address not permitted is unfortunately discarded at an access network as a handover destination. Disclosed is a technique configured so that a mobile terminal (UE 1) detecting a handover to the single address type connection network establishes a temporary connection with a mobility management gateway (PGW 5) and thereafter acquires an address of an ePDG 8 located at a core network and informs the ePDG of a communication state before the handover via a PDN using the temporary connection. The ePDG informs the PGW of the communication state of the UE before the handover. Thereby, the communication state of the UE before the handover is achieved with the PGW via the ePDG and the PDN.
摘要:
The invention relates to a method for ensuring IP session continuity upon a handover of a mobile node to a non-3GPP network, wherein an ongoing IP session of the mobile node goes via a packet data network gateway. For non-3GPP networks it is necessary to discover a security gateway and to then establish the corresponding tunnels to the ePDG to form the new data path; a security tunnel between the mobile node and the security gateway, and an IP tunnel between the packet data network gateway and the security gateway. In order to prepare the handover to possible non-3GPP accesses, the two tunnels are pre-established, however maintained deactivated until their use is actually needed. Accordingly, when handing over to the non-3GPP network, the IP session may be continued without any significant interruption by activating the already established tunnels.
摘要:
The present invention introduces a method for the network to optimize the route for user's local IP access, without affecting the access to operator's core network. With this mechanism, no excessive signalling is needed for the optimization. The present invention is also applicable to the corporate network that has multiple home NodeBs or home eNodeBs. Finer grain control on the services to be provided over different home NodeB or home eNodeB is also possible. Further, path optimization and continuation of the service upon handover can be controlled, and hence flexibility of the service can be secured.
摘要:
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. MN 200 has a plurality of radio communication interfaces, and a first interface is connected to MAG 220 of a home PMIPv6 domain 230, for instance. In case the connection of a second interface is changed from MAG 221 of a home PMIPv6 domain to AR 222 of a CMIPv6 domain 231, a BU message 262 is transmitted from the second interface to LMA/HA 250, 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.
摘要:
When detecting occurrence of an event for transmitting a measurement report of a radio condition of a cell at a frequency set for a base station apparatus, to the base station apparatus (3) communicating with a terminal apparatus (2), the terminal apparatus (2) in a wireless communication system (1) creates a measurement report including information indicating radio conditions of cells at a frequency at which the event occurred and at another different frequency. The base station apparatus (3) controls whether or not to perform handover of the terminal apparatus (2) to another cell, on the basis of the measurement report transmitted from the terminal apparatus (2). Thereby, there is provided a wireless communication system in which a base station apparatus and the terminal apparatus are communicable with each other using multiple frequencies, the wireless communication system being capable of shortening time required for handover.
摘要:
A technology is disclosed for a mobile device with multiple interfaces to make use of its multiple interfaces capability with Mobile IP. According to this technology, MN (Mobile Node) 100 comprises a cellular interface to connect to the cellular network 112 and a Wireless-LAN interface to connect to the local network 122 and 132, and sends a Binding Update message to set the address of the Wireless-LAN interface to CoA (Care-of Address) to HA (Home Agent) at the cellular network or CN (Correspondent Node) 160. This Binding Update message includes a special label indication that the cellular interface is currently connected to the home network.