摘要:
A wireless communication method for providing zone boundary detection performed by a controller managing communications within a multicast/broadcast service (MBS) zone. The method includes assigning to a boundary paging group a first base station communicating within the MBS zone and near a boundary of the MBS zone. The method further includes transmitting, through a second base station which covers a mobile station, to the mobile station information indicating that the boundary paging group corresponds to locations near the boundary of the MBS zone.
摘要:
A wireless communication method for providing zone boundary detection performed by a controller managing communications within a multicast/broadcast service (MBS) zone. The method includes assigning to a boundary paging group a first base station communicating within the MBS zone and near a boundary of the MBS zone. The method further includes transmitting, through a second base station which covers a mobile station, to the mobile station information indicating that the boundary paging group corresponds to locations near the boundary of the MBS zone.
摘要:
The invention relates to a SIM-based authentication method capable of supporting inter-AP fast handover, which can decrease the number of authentication procedures without negatively influencing the security of the wireless LAN by establishing an encrypted channel for each mobile node and using method 1: an aggressive key pre-distribution and method 2: probe request triggering passive key pre-query technique, thereby reducing the time of inter-AP handover for the mobile node. Furthermore, a re-authentication procedure is started to update the key after the key is used for a long time so as to ensure that the key is safe, thereby effectively achieving a fast and safe wireless LAN environment.
摘要:
A method for operating a wireless communication system including a mobile relay station group, a base station group, and an authentication server, includes: configuring, by the authentication server, group information into the mobile relay station group and the base station group; requesting, by the base station group, group authentication data for the mobile relay station group from the authentication server; and performing authentication between a member of the mobile relay station group and a member of the base station group and generating an authentication key individually by the member of the mobile relay station group and the member of the base station group. Also disclosed is a system for carrying out the method.
摘要:
A method and system for applying a multi-protocol label switching (MPLS) network to support QoS in general packet radio service (GPRS) is disclosed. An E-LSP tunnel with reserved bandwidth is pre-configured between Gateway GPRS Support Node (GGSN) and each Service GPRS Support Node (SGSN), and between any two SGSNs. Before an Mobile Station (MS) wishes to transmit or receive packets, it need to ask its designated SSGN for establishing an on-demand L-LSP from the SGSN to the Corresponding Node (CN). This L-LSP is required to tunnel through the pre-configured E-LSP that was mentioned above and here we apply the label stack technique from MPLS. Therefore, the packets of the on-demand L-LSP can be tunneled through the pre-configured E-LSP to the SGSN in which the MS is located, and then the SGSN is able to recognize and locate the mobile station according to the corresponding label in on-demand L-LSP.
摘要:
A method for operating a wireless communication system including a mobile relay station group, a base station group, and an authentication server, includes: configuring, by the authentication server, group information into the mobile relay station group and the base station group; requesting, by the base station group, group authentication data for the mobile relay station group from the authentication server; and performing authentication between a member of the mobile relay station group and a member of the base station group and generating an authentication key individually by the member of the mobile relay station group and the member of the base station group. Also disclosed is a system for carrying out the method.
摘要:
The invention relates to a SIM-based authentication method capable of supporting inter-AP fast handover, which can decrease the number of authentication procedures without negatively influencing the security of the wireless LAN by establishing an encrypted channel for each mobile node and using method 1: an aggressive key pre-distribution and method 2: probe request triggering passive key pre-query technique, thereby reducing the time of inter-AP handover for the mobile node. Furthermore, a re-authentication procedure is started to update the key after the key is used for a long time so as to ensure that the key is safe, thereby effectively achieving a fast and safe wireless LAN environment.
摘要:
The present invention discloses an asymmetric routing method and routing path recovery mechanism. The wireless sensor network environment includes at least a management unit, at least a gateway, and mobile nodes. When joining, each mobile node obtains an unique ID code and, additionally, a depth as the gradient to the management unit. Accordingly, a mobile node sends an uplink packet via a nearby node with lower depth to the management unit; while the management unit transmits a downlink packet to a mobile node by utilizing the source route method. When the parent node of a mobile node is damaged or moves to another position or said mobile node with its sub-tree descendants changes their position together, the uplink routing path is recovered via selecting a nearby node of the sub-tree as relay node and the downlink routing path is recovered via sending a control message to the management unit.
摘要:
The present invention discloses a power-efficient backbone-oriented wireless sensor network, a method for constructing the same and a method for repairing the same, wherein energy-rich nodes are used to form backbones linking to a server, and wherein regular nodes having limited energy storage link to the backbones. When one energy-rich node malfunctions, the energy-rich node, which is posterior to the malfunctioning energy-rich node, searches for and links to a linkable neighboring energy-rich node on the backbone. If there is none linkable neighboring energy-rich node, the regular nodes are used to form a temporary tunnel until the malfunctioning energy-rich node has been repaired. The present invention can relieve the influence of hot spots, increase the robustness of the wireless sensor network, and prolong the service life of the wireless sensor network.
摘要:
A method for preparing for handover of an apparatus from a first wireless network to a second, different wireless network, a master session key (MSK) having been generated during establishment of a connectivity of the apparatus to the first wireless network includes detecting signals of the second wireless network. In response thereto, establishing a connectivity of the apparatus to the second wireless network, using a pairwise master key (PMK) derived from the MSK generated during establishment of the connectivity to the first wireless network, one or more encryption keys being derivable from the PMK to support secure communication over the second wireless network.