Communication device and method for receiving signals in a frequency range
A communication terminal is described comprising a first transceiver configured for communication according to a first radio access technology and a second transceiver configured for communication according to a second radio access technology. The second transceiver is configured to determine whether a frequency range is occupied by a transmission according to the second radio access technology and to notify the first transceiver whether the frequency range is occupied by a transmission according to the second radio access technology. The first transceiver is configured to receive signals transmitted in the frequency range based on the notification from the second transceiver.
1. A communication terminal comprising:
a first transceiver configured for communication according to a first radio access technology;
a second transceiver configured for communication according to a second radio access technology;
wherein the second transceiver is configured to determine whether a frequency range is occupied by a transmission according to the second radio access technology and to notify the first transceiver whether the frequency range is occupied by a transmission according to the second radio access technology; and
wherein, when the frequency range is occupied by a transmission according to the second radio access technology:
the first transceiver is configured to pause reception of signals transmitted in the frequency range based on the notification from the second transceiver; and
the first transceiver is configured to enter a sleep mode.
2. The communication terminal of claim 1 , wherein the first transceiver is configured to pause reception of signals transmitted in the frequency range until a time transmission interval starting time according to a frame structure of the first radio access technology at which the occupation by the transmission according to the second radio access technology has stopped.
3. The communication terminal of claim 1 , wherein the first radio access technology is LTE and the first transceiver is an LTE modem.
4. The communication terminal of claim 1 , wherein the second radio access technology is wireless local area netowrk radio access technology.
5. The apparatus of claim 1 , wherein the first transceiver is configured to:
wake from sleep at a predetermined transmission check time; and
determine the period of transmission or reception of the second receiver upon waking from sleep.
6. An apparatus comprising
a first transceiver configured for communication according to a first radio access technology;
a second transceiver configured for communication according to a second radio access technology;
wherein the second transceiver is configured to determine whether a frequency range is occupied by a transmission according to the second radio access technology and to notify the first transceiver whether the frequency range is occupied by a transmission according to the second radio access technology;
wherein the notification includes a duration of the occupation of the frequency range by a transmission according to the second radio access technology; and
wherein the first transceiver is configured to pause reception of signals transmitted in the frequency range until a time transmission interval starting time according to a frame structure of the first radio access technology at which the occupation by the transmission according to the second radio access technology is complete.
7. The apparatus of claim 6 , wherein the first transceiver is configured to enter a sleep mode if the frequency range is occupied by a transmission according to the second radio access technology.
8. The apparatus of claim 6 , wherein the first radio access technology is LTE and the first transceiver is an LTE modem.
9. The apparatus of claim 6 , wherein the second radio access technology is wireless local area network radio access technology.
10. A communication terminal comprising
a first transceiver configured for communication according to a first radio access technology;
a second transceiver configured for communication according to a second radio access technology;
wherein the second transceiver is configured to determine whether a frequency range is occupied by a transmission according to the second radio access technology, and if the frequency range is occupied by the transmission according to the second radio access technology, to notify the first transceiver of a first duration that the frequency range will be occupied by a transmission according to the second radio access technology;
wherein the first transceiver is configured to perform a signal type detection during a second duration that is simultaneous or concurrent with the first duration; and
determine a probability of collision between a signal according to the first radio access technology and a signal according to the second radio access technology.
11. The communication terminal of claim 10 , further comprising, if the determined probability of collision exceeds a predetermined threshold, implementing a safety mode in which the first transceiver is put to sleep whenever the second transceiver receives or transmits a signal according to the second radio access technology.
12. The communication terminal of claim 10 , further comprising, if the determined probability of collision exceeds a predetermined threshold, implementing a safety mode in which the second transceiver is put to sleep whenever the first transceiver receives or transmits a signal according to the first radio access technology.
13. The communication terminal of claim 10 , wherein the first radio access technology is LTE and the first transceiver is an LTE modem.
14. The communication terminal of claim 10 , wherein the second radio access technology is wireless local area network radio access technology.
15. An apparatus comprising
a first transceiver configured for communication according to a first radio access technology;
a second transceiver configured for communication according to a second radio access technology;
wherein the second transceiver is configured to determine whether a frequency range is occupied by a transmission according to the second radio access technology and to notify the first transceiver whether the frequency range is occupied by a transmission according to the second radio access technology;
wherein the first transceiver is further configured to:
determine a period of transmission or reception of the second receiver according to the second radio access technology, based on the notification from the second transceiver; and
if the determined period of transmission or reception of the second receiver extends into a next transmission time interval of the first transceiver according to the first radio access technology, enter a sleep mode.
16. The apparatus of claim 15 , wherein the first transceiver is configured to determine the period of transmission or reception of the second receiver upon waking from sleep, and wherein the first transceiver is further configured to wake from sleep at a predetermined transmission check time.
17. The apparatus of claim 15 , wherein the predetermined transmission check time is selected based on at least one of a timing distance of a transmission time boundary, an activation time of a receiver chain, or an IDC message processing delay.
18. The apparatus of claim 15 , wherein the sleep mode includes the deactivation of at least one of a radio frequency receiver and a baseband receiver of the first transceiver.
19. The apparatus of claim 15 , wherein the first radio access technology is LTE and the first transceiver is an LTE modem.
20. The apparatus of claim 15 , wherein the second radio access technology is wireless local area network radio access technology.