Apparatus and methods to support emergency services through untrusted wireless networks by a user equipment (UE) are disclosed. The UE detects a request for emergency services to be provided via an untrusted wireless network. The UE de-registers from any non-emergency services and releases any existing PDN connections. The UE sends a request for emergency services to an evolved packet data gateway (ePDG) at an Internet Protocol (IP) address obtained from a table or from a domain name system (DNS) server. The request includes an indication for emergency services using a configuration attribute assigned to indicate emergency services. The UE receives from the ePDG an indication of support for emergency services in a reply to the request.

Systems and methods are disclosed for a 3G gateway. In one embodiment, a system is disclosed, comprising a gateway situated between a 3G radio access network (RAN) and a core network, the gateway providing resource management for a nodeB, and providing routing and node management for another base station, wherein the base station may be configured to provide, as a virtual RNC, radio resource control, power control, ciphering, and multiplexing of multiple users onto a transmission path for a first mobile device attached to the nodeB; the gateway may be configured to relay traffic for a second mobile device attached to the base station; and the gateway may be configured to relay traffic to the core network from both the nodeB and the base station via an IuCS interface and an IuPS interface.

A method for topology hiding is disclosed, comprising: receiving, at a gateway, the gateway positioned between a core network and a radio access network, a configuration information request from a base station; analyzing, at the gateway, a topology of the radio access network, the radio access network including the base station; grouping, at the gateway, the base station into a first group based on the topology; sending, from the gateway to the base station, a grouping message to indicate that the base station be placed in the first group; and terminating connections from the core network to one or more base stations in the first group at the gateway as a back-to-back proxy, thereby hiding the topology of the radio access network from the core network.

The present invention disclosed a unified communication system based on micro base station. The system includes: a micro base station subsystem, a landline telephone network subsystem, an office network subsystem and a communication switching subsystem. The communication switching subsystem receives a voice service request from the micro base station subsystem and the landline telephone network subsystem, sends the voice service request to the micro base station subsystem when a called user in the voice service request is a mobile communication intranet user, sends the voice service request to the landline telephone network subsystem when the called user in the voice service request is a landline telephone network user, receives a service request from the micro base station subsystem, and sends the service request to the office network subsystem.

The subject of the present invention is a method for managing the reception of a telephone call signal on a communication terminal, with a view to the establishment of a telephone link, said telephone link being established by way of a server, said called communication terminal being able to receive the telephone call signal according to at least two modes, comprising a voice mode, in which the telephone link between the called communication terminal and the server is ensured by way of a telephone communication network, and a data mode, in which the telephone link between the called communication terminal and the server is ensured by way of a network for data communication according to a Voice over IP technology, said method comprising the direct selection, by the user of the method, of the mode of establishment of the telephone link. The method comprising the allocating by a call server of a temporary number to the calling communication terminal.

Systems and methods are disclosed for a 3G gateway. In one embodiment, a system is disclosed, comprising a gateway situated between a 3G radio access network (RAN) and a core network, the gateway providing resource management for a nodeB, and providing routing and node management for another base station, wherein the base station may be configured to provide, as a virtual RNC, radio resource control, power control, ciphering, and multiplexing of multiple users onto a transmission path for a first mobile device attached to the nodeB; the gateway may be configured to relay traffic for a second mobile device attached to the base station; and the gateway may be configured to relay traffic to the core network from both the nodeB and the base station via an IuCS interface and an IuPS interface.

A method for handling an ATTACH reject message with packet radio service mobility management reject cause number (#14 cause) at a user equipment (UE) is provided. The method includes receiving, at the UE, an ATTACH accept message for a network service on a public land mobile network (PLMN) from a first network entity, wherein the PLMN is in a forbidden PLMNs for general packet radio service (GPRS) service list, detecting, by the UE, that the UE's evolved universal terrestrial radio access (E-UTRA) capability is disabled, and enabling, by the UE, the UE's E-UTRA capability and removing the PLMN from the forbidden PLMNs for GPRS service list.

A method for topology hiding is disclosed, comprising: receiving, at a gateway, the gateway positioned between a core network and a radio access network, a configuration information request from a base station; analyzing, at the gateway, a topology of the radio access network, the radio access network including the base station; grouping, at the gateway, the base station into a first group based on the topology; sending, from the gateway to the base station, a grouping message to indicate that the base station be placed in the first group; and terminating connections from the core network to one or more base stations in the first group at the gateway as a back-to-back proxy, thereby hiding the topology of the radio access network from the core network.

A computer-implemented system and method for delivering group messages is provided. Users signed on to a discussion group that is associated with a discussion group ID are identified. One of the signed-on users is designated as a moderator. A voice message is received and the discussion group ID is extracted from the voice message. The voice message is provided to the moderator and further provided to the signed-on users in the discussion group upon acceptance of the voice message by the moderator.

A group call is setup between one originating device (A) and at least two terminating devices (B, C), which each has access to a public land mobile network (131, 132, 133) and a mobile data net-work (121, 122, 123). The originating and terminating devices (A, B, C) include a respective software-implemented call handling tool (SWA, SWB, SWC) configured to assist a user in placing and receiving group calls. Bridge nodes (141, 142, 143) are connected to the mobile data network (121, 122, 123), the public land mobile network (131, 132, 133) and a server node (110), which, in turn, also is connected to the mobile data network (121, 122, 123). In response to a call-setup command from a user of the originating device (A), the software-implemented call handling tool (SWA), on one hand, sends a call-setup request (1) to the server node (110); and on the other hand, makes a first call (2) to a first bridge node (141) over the public land mobile network (131) using a first telephone number (#1) stored in the originating device (A). The call-setup request (1) indicates an identity of the terminating devices (B, C). Based on the call-setup request (1) and the first call (2), the server node (110) sets up a call between the originating and terminating devices (A, B, C) over a conference bridge (146) in the first bridge node (141), plus possibly other bridge nodes (147, 148) depending on where the devices (A, B, C) are located relative to one another.