The invention relates to a method for accessing an Internet protocol Multimedia Subsystem type subsystem, said subsystem.

According to the invention, a device 14 is firstly connected to a mobile communication network 100, as a visited network, said first network. The method comprises the following steps. The first network sends to the device a first message 22 comprising current location data relating to a location where the device is currently present. The device analyses whether at least one roaming rule associated with the current location data is or is not stored within the device. The at least one roaming rule includes, each, at least one parameter for accessing the subsystem. And if the device does store the at least one roaming rule associated with the current location data, then the device sends to the subsystem a second message 218 including a request for connecting to the subsystem.

The invention also pertains to a corresponding device.

Described are a method and device for multi-source control of an intelligent miniature projector. With the method, connection of intelligent miniature projector equipment with multiple UEs is established; after a projection request sent by a first UE is received, when it is detected that played content of a second UE is being projected, a switching confirmation prompt is sent to the second UE; and after the second UE's consent for switching is received, the current projection process is stopped, a response to the projection request of the first UE is made, and played content of the first UE is projected.

It is disclosed a method for protecting a traffic flow transmitted in a radio communication network having a topology of a ring and comprising a plurality of network elements. The traffic flow has a flow portion being transmitted through a working path along a first direction of the ring. In case of presence of a failure or degradation on the working path, the method comprises: a) detecting the failure or degradation at a first network element adjacent to the failure or degradation and located upstream the failure or degradation along the working path; and b) rerouting, at the first network element, the flow portion from the working path to a protection path along a second direction of the ring opposite to the first direction.

A wireless communication terminal (2) for performing data communication via a wireless communication apparatus (3) connected to a public wireless communication network, the wireless communication terminal (2) comprising: a wireless communication unit (21) for performing wireless communication with said wireless communication apparatus (3); and a notification unit (22) for notifying a user of a state of wireless communication between said wireless communication apparatus (3) and the public wireless communication network received from said wireless communication apparatus (3) via said wireless communication unit (21) before said wireless communication terminal (2) tries to access said public wireless communication network.

A wireless line control system capable of reducing control signals to wireless nodes with high loads as well as reducing instantaneous interruption or disconnection at user terminals connected to the wireless nodes is provided. In a1 to a3, centralized control node requests reception levels which indicate radio wave propagation states between wireless nodes from each wireless node and acquires the reception levels, and calculates and stores average values thereof. In a4 to a6, the centralized control node requests traffic information from each wireless node and acquires the traffic information, and calculates and stores average values thereof. Based on the averaged historical traffic information and reception levels between wireless nodes, in a7 and a8, the centralized control node determines a configuration of a wireless mesh network which is appropriate from the present to the future, and transmits configuration instructions to each wireless node according to the determined wireless mesh network configuration.