Abstract: A Personal Area Network Security Domain (PSD) is formed between devices (142, 150, 152, 154 and 156). The PSD allows the sharing of data and/or resources between the devices within the PSD. The devices within the PSD are located remotely from one another. For example, communication between device (150 and 156) will be performed via mobile or cellular telephone network (120), the Internet (140) and mobile or cellular telephone network (126). Each network (120, 126) is provided with a PSD Hub, which enables an IPsec secure connection between the devices (150 and 156) to be established.

Abstract: A communications device (1) communicates with an access point (7) to gateway (21) and local area network (13) by a wired or wireless communications link (9). These components may, for example, be accommodated on a train or serve some other predefined area. Gateway (21) receives data packets from device (1) representing information for transmission via that device's “home” communication system (15) to a destination device. The gateway (21) creates packet data protocol channels (27,29,31) with a plurality of communication systems (15,23) and (25) and sends the data packets received from the device (1) selectively over each of these communications channels (27,29,31). A link between a communications systems (23) and (25) allows the data packets to be forwarded to the communications system (15) where they are compiled by concentrator (49) for onward transmission. The communication systems (15,23,25) may be mobile or cellular communications systems.

Abstract: A Personal Area Network Security Domain (PSD) (50) is formed between PDA (52), mobile terminal (54), PC (56) and printer (58). The PSD (50) allows the sharing of resources between the devices within the PSD. If the devices within the PSD (50) are located remotely from one another, communication between those devices will be performed via mobile or cellular telephone network (66) and the Internet (68). For each set or association of similarly located devices within the PSD (50), one of those devices will be a gateway device. The gateway device is a device that is configured to communicate with an external communications medium (mobile network (66) or the Internet (68)). Data transmissions to other devices within the PSD are channelled through the relevant gateway. In another embodiment resources are shared between the two separate PSDs (of which may or may not be remotely located with respect to one another) by means of data exchanges between the respective gateway devices of the two PSDs.

Abstract: A Personal Area Network Security Domain (PSD) is formed between devices (142, 150, 152, 154 and 156). The PSD allows the sharing of data and/or resources between the devices within the PSD. The devices within the PSD are located remotely from one another. For example, communication between device (150 and 156) will be performed via mobile or cellular telephone network (120), the Internet (140) and mobile or cellular telephone network (126). Each network (120, 126) is provided with a PSD Hub, which enables an IPsec secure connection between the devices (150 and 156) to be established.

Abstract: A Personal Area Network Security Domain (PSD) (50) is formed between PDA (52), mobile terminal (54), PC (56) and printer (58). The PSD (50) allows the sharing of resources between the devices within the PSD. If the devices within the PSD (50) are located remotely from one another, communication between those devices will be performed via mobile or cellular telephone network (66) and the Internet (68). For each set or association of similarly located devices within the PSD (50), one of those devices will be a gateway device. The gateway device is a device that is configured to communicate with an external communications medium (mobile network (66) or the Internet (68)). Data transmissions to other devices within the PSD are channelled through the relevant gateway. In another embodiment resources are shared between the two separate PSDs (of which may or may not be remotely located with respect to one another) by means of data exchanges between the respective gateway devices of the two PSDs.

Abstract: A communications device (1) communicates with an access point (7) to gateway (21) and local area network (13) by a wired or wireless communications link (9). These components may, for example, be accommodated on a train or serve some other predefined area. Gateway (21) receives data packets from device (1) representing information for transmission via that device's “home” communication system (15) to a destination device. The gateway (21) creates packet data protocol channels (27,29,31) with a plurality of communication systems (15,23) and (25) and sends the data packets received from the device (1) selectively over each of these communications channels (27,29,31). A link between a communications systems (23) and (25) allows the data packets to be forwarded to the communications system (15) where they are compiled by concentrator (49) for onward transmission. The communication systems (15,23,25) may be mobile or cellular communications systems.