WIRELESS COMMUNICATIONS DEVICE
A wireless access device is operable in a mode in which its maximum transmit power is set to a value that means that the device has a range of less than 1 metre. This allows the device to operate as a basestation in a cellular communications network, even in locations in which it is not specifically licensed, because the power level is so low that it will not cause interference on the licensed frequencies. The wireless access device is designed such that a handheld portable device can be maintained in a close spatial relationship to it.
1 . A wireless access device, comprising:
a first interface for establishing a connection with a mobile device using a cellular communications protocol at a maximum range of 1 metre; and
a second interface for establishing a connection with a cellular network over a public wide area network.
2 . A wireless access device as claimed in claim 1 , wherein the second interface comprises a USB connector.
3 . A wireless access device as claimed in claim 1 , wherein the second interface comprises a Wi-Fi interface.
4 . A wireless access device as claimed in claim 1 , wherein the second interface comprises an Ethernet connector.
5 . A wireless access device as claimed in one of claims 1 to 4 , having a surface on which the mobile device can be placed in order to establish the connection therewith.
6 . A wireless access device as claimed in claim 5 , comprising at least one switch, for controlling operation of the device depending on whether the mobile device is present on the surface.
7 . A wireless access device as claimed in claim 6 , wherein the wireless access device transmits cellular signals only when the mobile device is detected on the surface.
8 . A wireless access device as claimed in one of claims 1 to 4 , comprising a base unit and a cradle in which the mobile device can be placed in order to establish the connection therewith.
9 . A wireless access device as claimed in claim 8 , wherein the cradle comprises an antenna for establishing the connection with the mobile device.
10 . A wireless access device as claimed in claim 8 , comprising a wired connection between the base unit and the cradle.
11 . A wireless access device as claimed in claim 8 , comprising means for charging a mobile device placed in the cradle.
12 . A wireless access device, comprising:
a first interface for establishing a connection with a mobile device using a cellular communications protocol; and
a second interface for establishing a connection with a cellular network over a public wide area network;
wherein the wireless access device is adapted to:
send a report containing location indicative information to a management node of a network;
receive a reply from the management node; and
set at least one of a transmit power of the device and a transmit power of a mobile device having a connection thereto, based on said reply,
wherein in one mode of operation the transmit power of the device or the transmit power of the mobile device having a connection thereto are such as to allow a maximum range of 1 metre.
13 . A wireless access device as claimed in claim 12 , wherein the second interface comprises a USB connector.
14 . A wireless access device as claimed in claim 12 , wherein the second interface comprises a Wi-Fi interface.
15 . A wireless access device as claimed in claim 12 , wherein the second interface comprises an Ethernet connector.
16 . A wireless access device as claimed in one of claims 12 to 15 , having a surface on which the mobile device can be placed in order to establish the connection therewith.
17 . A wireless access device as claimed in claim 16 , comprising at least one switch, for controlling operation of the device depending on whether the mobile device is present on the surface.
18 . A wireless access device as claimed in claim 17 , wherein the wireless access device transmits cellular signals only when the mobile device is detected on the surface.
19 . A wireless access device as claimed in one of claims 12 to 15 , comprising a base unit and a cradle in which the mobile device can be placed in order to establish the connection therewith.
20 . A wireless access device as claimed in claim 19 , wherein the cradle comprises an antenna for establishing the connection with the mobile device.
21 . A wireless access device as claimed in claim 19 or 20 , comprising a wired connection between the base unit and the cradle.
22 . A wireless access device as claimed in claim 12 , wherein in a second mode of operation the transmit power of the device or the transmit power of the mobile device having a connection thereto are such as to allow a range of more than 1 metre.
23 . A wireless access device as claimed in claim 22 , comprising an indicator for indicating whether the wireless access device is operating in the first or second mode of operation.
24 . A wireless access device as claimed in claim 12 , wherein the location indicative information comprises information derived from transmissions by nearby cellular basestations.
25 . A wireless access device, comprising a femtocell basestation, having means for connection over a public wide area network, and that is restricted such that it transmits signals at licensed frequencies at a power sufficiently low to avoid interference with licensed users.
26 . A wireless access device, comprising a femtocell basestation operable in a cellular network using licensed frequencies, the femtocell basestation having an interface for establishing a wired or wireless connection over a public wide area network into the cellular network even when the femtocell basestation is located outside a coverage area of the cellular network, and the femtocell basestation being restricted such that it transmits signals at a power sufficiently low to avoid interference with licensed users at its location.
27 . A method of operation of a wireless access device, the method comprising:
obtaining location indicative information;
sending a report containing the location indicative information to a management node of a network;
receiving a reply from the management node; and
setting at least one of a transmit power of the device and a transmit power of a mobile device having a connection thereto, based on said reply,
wherein in one mode of operation the transmit power of the device or the transmit power of a mobile device having a connection thereto are such as to allow a maximum range of 1 metre.
28 . A method as claimed in claim 27 , wherein the location indicative information comprises information derived from transmissions by nearby cellular basestations.
29 . A method as claimed in claim 27 , comprising:
attempting to detect transmissions by nearby cellular basestations;
if transmissions by nearby cellular basestations can be detected, extracting the location indicative information from said transmissions; and
if transmissions by nearby cellular basestations can not be detected, sending a report containing an IP address to which the wireless access device is connected as the location indicative information.
30 . A method as claimed in claim 27 , comprising:
indicating to a user whether the wireless access device is operating in the one mode of operation in which the transmit power or the receive power are such as to allow a maximum range of 1 metre, or whether the wireless access device is operating in another mode of operation in which the transmit powers are such as to allow a maximum range of greater than 1 metre.