Methods, receivers, transmitters, and systems for performing a soft hand-over of a mobile terminal between base stations that communicate using different communication channels
Methods, receivers, transmitters, and systems are provided for performing a soft hand-over of a mobile terminal between base station transceivers that communicate using different communication channels. A mobile terminal may be configured to receive and demodulate signals on a plurality of different communication channels concurrently and to modulate and transmit signals on a plurality of different communication channels concurrently. This allows, for example, multiple communication connections to be concurrently established between the mobile terminal and a plurality of different base station transceivers that use the different communication channels to communicate. The mobile terminal and cooperating base station transceivers may perform a soft hand-over by allowing the mobile terminal to establish communication connections with one or more new base station transceivers to decide which base station transceiver should be given control before terminating any pre-existing communication connection with a current base station transceiver.
1. A method of performing a mobile terminal hand-over, comprising:
establishing concurrent communication connections between the mobile terminal and a plurality of base station transceivers using a plurality of different communication channels that are associated with a communication band of contiguous communication channels, wherein respective ones of the plurality of base station transceivers are associated with respective ones of the plurality of different communication channels, comprising:
filtering radio frequency (RF) signals received by the mobile terminal using a bandpass filter that passes frequencies corresponding to the communication band of contiguous communication channels;
sampling the band of RF frequencies at the mobile terminal to detect a plurality of signals received from the plurality of base station transceivers, wherein respective ones of the plurality of received signals are associated with respective ones of the plurality of base station transceivers; and
concurrently demodulating the detected plurality of signals received from the plurality of base station transceivers.
2. A method of performing a mobile terminal hand-over, comprising:
establishing concurrent communication connections between the mobile terminal and a plurality of base station transceivers using a plurality of different communication channels that are associated with a communication band of contiguous communication channels, wherein respective ones of the plurality of base station transceivers are associated with respective ones of the plurality of different communication channels, comprising:
filtering signals received by the mobile terminal using a bandpass filter that passes frequencies corresponding to the communication band of contiguous communication channels;
stepping down signals received by the mobile terminal and passed by the bandpass filter from frequencies corresponding to the communication band of contiguous communication channels to a band of intermediate frequencies;
sampling the band of intermediate frequencies at the mobile terminal to detect a plurality of signals received from the plurality of base station transceivers, wherein respective ones of the plurality of received signals are associated with respective ones of the plurality of base station transceivers; and
concurrently demodulating the detected plurality of signals received from the plurality of base station transceivers.
3. The method of claim 1 , wherein the mobile terminal is associated with an original one of the plurality of base station transceivers, the method further comprising:
selecting one of the plurality of base station transceivers other than the one of the plurality of base station transceivers with which the mobile terminal is associated;
creating a new association between the mobile terminal and the selected one of the plurality of base station transceivers; then
destroying the association between the mobile terminal and the original one of the plurality of base station transceivers.
4. A system for performing a mobile terminal hand-over, comprising:
means for establishing concurrent communication connections between the mobile terminal and a plurality of base station transceivers using a plurality of different communication channels that are associated with a communication band of contiguous communication channels, wherein respective ones of the plurality of base station transceivers are associated with respective ones of the plurality of different communication channels, comprising:
means for filtering radio frequency (RF) signals received by the mobile terminal using a bandpass filter that passes frequencies corresponding to the communication band of contiguous communication channels;
means for sampling the band of RF frequencies at the mobile terminal to detect a plurality of signals received from the plurality of base station transceivers, wherein respective ones of the plurality of received signals are associated with respective ones of the plurality of base station transceivers; and
means for concurrently demodulating the detected plurality of signals received from the plurality of base station transceivers.
5. A system for performing a mobile terminal hand-over, comprising:
means for establishing concurrent communication connections between the mobile terminal and a plurality of base station transceivers using a plurality of different communication channels that are associated with a communication band of contiguous communication channels, wherein respective ones of the plurality of base station transceivers are associated with respective ones of the plurality of different communication channels, comprising:
means for filtering signals received by the mobile terminal using a bandpass filter that passes frequencies corresponding to the communication band of contiguous communication channels;
means for stepping down signals received by the mobile terminal and passed by the bandpass filter from frequencies corresponding to the communication band of contiguous communication channels to a band of intermediate frequencies;
means for sampling the band of intermediate frequencies at the mobile terminal to detect a plurality of signals received from the plurality of base station transceivers, wherein respective ones of the plurality of received signals are associated with respective ones of the plurality of base station transceivers; and
means for concurrently demodulating the detected plurality of signals received from the plurality of base station transceivers.
6. The system of claim 4 , wherein the mobile terminal is associated with an original one of the plurality of base station transceivers, the system further comprising:
means for selecting one of the plurality of base station transceivers other than the one of the plurality of base station transceivers with which the mobile terminal is associated;
means for creating a new association between the mobile terminal and the selected one of the plurality of base station transceivers; and
means for destroying the association between the mobile terminal and the original one of the plurality of base station transceivers responsive to the means for creating the new association between the mobile terminal and the selected one of the plurality of base station transceivers.
7. The method of claim 2 , wherein the mobile terminal is associated with an original one of the plurality of base station transceivers, the method further comprising:
selecting one of the plurality of base station transceivers other than the one of the plurality of base station transceivers with which the mobile terminal is associated;
creating a new association between the mobile terminal and the selected one of the plurality of base station transceivers; then
destroying the association between the mobile terminal and the original one of the plurality of base station transceivers.
8. The system of claim 5 , wherein the mobile terminal is associated with an original one of the plurality of base station transceivers, the system further comprising:
means for selecting one of the plurality of base station transceivers other than the one of the plurality of base station transceivers with which the mobile terminal is associated;
means for creating a new association between the mobile terminal and the selected one of the plurality of base station transceivers; and
means for destroying the association between the mobile terminal and the original one of the plurality of base station transceivers responsive to the means for creating the new association between the mobile terminal and the selected one of the plurality of base station transceivers.