1. A method, performed by a processor of a cable interference detection device, of detecting interference in a wireless network caused by a cable network, the method comprising:
obtaining a signal signature of a wireless signal received at a receiver of a mobile communication device, the signal signature being a fast fourier transform representation of the wireless signal; and
determining that the wireless signal represents interference caused by the cable network by comparing the signal signature to a cable network signal signature.
2. The method of claim 1, wherein the cable interference detection device is a core wireless network device and wherein obtaining the signal signature of the wireless signal comprises:
receiving the signal signature from the mobile communication device, the mobile communication device being configured to receive the wireless signal at the receiver of the mobile communication device and to perform a fast fourier transform on the wireless signal to obtain the signal signature.
3. The method of claim 2, wherein the mobile communication device is further configured to:
determine that the wireless signal is an interference signal by determining that the signal signature is not associated with a wireless network signal for the wireless network; and
send the signal signature to the cable interference detection device in response to determining that the wireless signal is an interference signal.
4. The method of claim 1, further comprising:
receiving location information associated with the wireless signal, the location information specifying a location where the mobile communication device was located when the wireless signal was obtained.
5. The method of claim 4, wherein the location information is global positioning system (GPS) data and is received from the mobile communication device.
6. The method of claim 4, wherein the location information is determined based on the location of a node of the wireless network with which the mobile communication device is communicating.
7. The method of claim 4, wherein determining that the wireless signal represents interference caused by the cable network further comprises comparing the location to cable network topology data, the cable network topology data indicating the location of cable network components associated with the cable network.
8. The method of claim 4, further comprising,
displaying a map identifying the location on a display associated with the cable interference detection device.
9. The method of claim 8, wherein the map further displays a visual representation of cable network topology data, the cable network topology data indicating the location of cable network components associated with the cable network.
10. The method of claim 4, further comprising, after determining that the wireless signal represents interference caused by the cable network:
storing interference data in a memory associated with the cable interference detection device, the interference data identifying the location.
11. The method of claim 4, further comprising:
consulting interference data in memory associated with the cable interference detection device to determine whether the number of incidents of interference in proximity to the location exceeds a predetermined threshold; and
when the number of incidents of interference near the location exceeds the predetermined threshold, triggering an alarm.
12. The method of claim 1, wherein the cable network signal signature is stored in memory of the cable interference detection device.
13. The method of claim 1, wherein the cable interference detection device is the mobile communication device and wherein obtaining the signal signature of the wireless signal comprises:
obtaining the wireless signal from the receiver of the mobile communication device; and
performing a fast fourier transform on the wireless signal to obtain the signal signature.
14. The method of claim 1, wherein the cable interface detection device is a femtocell.
15. The method of claim 1, wherein the wireless network is a long term evolution that is configured to utilize a 700 MHz band.
16. A cable interference detection device comprising:
a communication subsystem for obtaining a signal signature of a wireless signal received at a receiver of a mobile communication device, the signal signature being a fast fourier transform representation of the wireless signal;
a memory for storing a cable network signal signature; and
a processor coupled with the communication subsystem and the memory, the processor being configured to determine that the wireless signal represents interference caused by the cable network by comparing the signal signature obtained at the communication subsystem with the cable network signal signature.
17. The cable interference detection device of claim 16, wherein the communication subsystem further receives location information associated with the wireless signal, the location information specifying a location where the mobile communication device was located when the wireless signal was obtained.
18. The cable interference detection device of claim 17, further comprising:
displaying a map identifying the location.
19. A mobile communication device comprising:
a receiver for receiving a wireless signal, the receiver being associated with a fast fourier transform block which performs a fast fourier transform on a received wireless signal to obtain a signal signature;
a transmitter for communicating with a wireless network;
a processor coupled with the receiver and the transmitter, the processor being configured to:
determine that the wireless signal is an interference signal; and
send information to a system connected to the wireless network in response to determining that the wireless signal is an interference signal.
20. The mobile communication device of claim 19, wherein the sent information comprises:
the signal signature of the received wireless signal.
21. The mobile communication device of claim 19, wherein the sent information includes an amplitude of the received wireless signal.
22. The mobile communication device of claim 19, further comprising a location detection subsystem, the location detection subsystem being configured to generate location information specifying a location of the mobile communication device, and wherein the processor is further configured to:
in response to determining that the wireless signal is an interference signal, send location information to the system connected to the wireless network.
23. The mobile communication device of claim 19, further comprising a display subsystem coupled with the processor and wherein the processor is configured to cause the amplitude of the interference signal to be displayed on the display subsystem.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A human breathing device, comprising:
a lung demand valve;
a user interface part to be connected to the user defining a breathing space at the mouth of the user;
a breathing connection connected to the user interface part, said breathing connection having an intake passage connection and an exhalation passage, said lung demand valve being detachably connected to said breathing connection; and
an expiration valve associated with the breathing connection, said expiration valve for regulating passage of gas out of said breathing space, said expiration valve including a valve spring and an adjusting device affecting a pretension of said valve spring, said adjusting device including an angle lever pivotable about an axis of rotation for performing a changeover from a stable angular position for normal pressure operation with less pretension of said valve spring to a different angular position for an overpressure operation with greater pretension of said valve spring, said valve spring being connected to said angle lever and said expiration valve.
2. A human breathing device in accordance with claim 1, wherein said angle lever has an actuating lever, said actuating lever engaging said lung demand valve when said lung demand valve is connected to said intake passage connection, said angle lever having a supporting lever connected to said actuating lever to affect the pretensioning force of the valve spring.
3. A human breathing device in accordance with claim 2, wherein a front side of said actuating lever has a bevel directed toward the axis of rotation, said bevel defining an engagement surface to engage said lung demand valve.
4. A human breathing device in accordance with claim 3, wherein an angle \u03b1 of said bevel is in the range of 5\xb0 to 50\xb0.
5. A human breathing device, comprising:
a gas inlet;
a breathing interface including an expiration valve with valve spring and an adjusting device, which affects the pretension of said valve spring, said adjusting device performing a changeover function from normal pressure operation to overpressure operation, said valve spring having a first end portion and a second end portion, said adjusting device comprising an angle lever pivotable about an axis of rotation from a first rotational position to a second rotational position, said first end portion being fixed to said angle lever and said second end portion being fixed to said expiration valve; and
a gas delivery device having a demand valve connected to said breathing interface adjacent to said adjusting device.
6. A human breathing device in accordance with claim 5, wherein said gas delivery device is in contact with said angle lever, said angle lever being pivotable about an axis of rotation for performing a changeover from a stable angular position for normal pressure operation with less pretension of said valve spring to a different angular position for an overpressure operation with greater pretension of said valve spring.
7. A human breathing device in accordance with claim 5, wherein said gas delivery device compresses said angle lever such that said angle lever is in a non stable position during said overpressure operation.
8. A human breathing device in accordance with claim 5, wherein said angle lever has an actuating lever, which engages said gas delivery device, and a supporting lever directed essentially at right angles to said actuating lever to affect the pretensioning force of the valve spring.
9. A human breathing device in accordance with claim 8, wherein a front side of said actuating lever has a bevel directed toward the axis of rotation, said bevel defining an engagement surface to engage said gas delivery device.
10. A human breathing device in accordance with claim 9, wherein an angle \u03b1 of said bevel is in the range of 5\xb0 to 50\xb0.