SWITCHING BETWEEN DIFFERENT TRANSMIT/RECEIVE PULSE SHAPING FILTERS FOR LIMITING ADJACENT CHANNEL INTERFERENCE
First Claim
1. A femtocell base station that is configured for limiting adjacent channel interference, comprising:
- a transmitter that is configured to transmit downlink signals to a mobile station;
a transmit pulse-shaping filter that limits bandwidth of the downlink signals transmitted by the femtocell base station;
a narrower transmit pulse-shaping filter that limits the bandwidth of the downlink signals transmitted by the femtocell station to a greater extent than the transmit pulse-shaping filter;
a processor;
memory in electronic communication with the processor; and
instructions stored in the memory, the instructions being executable by the processor to cause the femtocell base station to switch between the transmit pulse-shaping filter and the narrower transmit pulse-shaping filter.
1 Assignment
0 Petitions
Accused Products
Abstract
A femtocell base station includes a transmitter that transmits downlink signals to a mobile station, a receiver that receives uplink signals from the mobile station, a standard transmit pulse-shaping filter, and a narrower transmit pulse-shaping filter that limits the bandwidth of the downlink signals to a greater extent than the standard transmit pulse-shaping filter. The femtocell base station also includes a standard receive pulse-shaping filter and a narrower receive pulse-shaping filter. The femtocell base station is configured to switch between the standard transmit pulse-shaping filter and the narrower transmit pulse-shaping filter, and to switch between the standard receive pulse-shaping filter and the narrower receive pulse-shaping filter. A mobile station may switch from a standard transmit pulse-shaping filter to a narrower transmit pulse-shaping filter to limit uplink interference. A mobile station may switch from a narrower transmit pulse-shaping filter to a standard transmit pulse-shaping filter to achieve a higher data rate.
-
Citations
39 Claims
-
1. A femtocell base station that is configured for limiting adjacent channel interference, comprising:
-
a transmitter that is configured to transmit downlink signals to a mobile station; a transmit pulse-shaping filter that limits bandwidth of the downlink signals transmitted by the femtocell base station; a narrower transmit pulse-shaping filter that limits the bandwidth of the downlink signals transmitted by the femtocell station to a greater extent than the transmit pulse-shaping filter; a processor; memory in electronic communication with the processor; and instructions stored in the memory, the instructions being executable by the processor to cause the femtocell base station to switch between the transmit pulse-shaping filter and the narrower transmit pulse-shaping filter. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
-
-
13. A method for limiting adjacent channel interference, the method being implemented by a femtocell base station, the method comprising:
-
transmitting downlink signals to a mobile station; and switching between a transmit pulse-shaping filter and a narrower transmit pulse-shaping filter; wherein the transmit pulse-shaping filter limits bandwidth of the downlink signals transmitted by the femtocell base station, and wherein the narrower transmit pulse-shaping filter limits the bandwidth of the downlink signals transmitted by the femtocell station to a greater extent than the transmit pulse-shaping filter. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A femtocell base station that is configured for limiting adjacent channel interference, comprising:
-
means for transmitting downlink signals to a mobile station; and means for switching between a transmit pulse-shaping filter and a narrower transmit pulse-shaping filter; wherein the transmit pulse-shaping filter limits bandwidth of the downlink signals transmitted by the femtocell base station, and wherein the narrower transmit pulse-shaping filter limits the bandwidth of the downlink signals transmitted by the femtocell station to a greater extent than the transmit pulse-shaping filter. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33)
-
-
34. A computer-program product for a femtocell base station that is configured to limit adjacent channel interference, the computer-program product comprising a computer-readable medium having instructions thereon, the instructions comprising:
-
code for transmitting downlink signals to a mobile station; and code for switching between a transmit pulse-shaping filter and a narrower transmit pulse-shaping filter; wherein the transmit pulse-shaping filter limits bandwidth of the downlink signals transmitted by the femtocell base station, and wherein the narrower transmit pulse-shaping filter limits the bandwidth of the downlink signals transmitted by the femtocell station to a greater extent than the transmit pulse-shaping filter. - View Dependent Claims (35, 36)
-
-
37. A mobile station that is configured for limiting adjacent channel interference, comprising:
-
a transmitter that is configured to transmit uplink signals to a femtocell base station; a transmit pulse-shaping filter; a narrower transmit pulse-shaping filter, wherein the narrower transmit pulse-shaping filter limits bandwidth of uplink signals transmitted by the mobile station to a greater extent than the transmit pulse-shaping filter; a processor; memory in electronic communication with the processor; and instructions stored in the memory, the instructions being executable by the processor to cause the mobile station to switch between the transmit pulse-shaping filter and the narrower transmit pulse-shaping filter based on commands received from the femtocell base station.
-
-
38. A mobile station that is configured for limiting adjacent channel interference, comprising:
-
a transmitter that is configured to transmit uplink signals to a femtocell base station; a transmit pulse-shaping filter; a narrower transmit pulse-shaping filter, wherein the narrower transmit pulse-shaping filter limits bandwidth of uplink signals transmitted by the mobile station to a greater extent than the transmit pulse-shaping filter; a processor; memory in electronic communication with the processor; and instructions stored in the memory, the instructions being executable by the processor to cause the mobile station to switch from the narrower transmit pulse-shaping filter to the transmit pulse-shaping filter in response to determining that a data rate condition is satisfied. - View Dependent Claims (39)
-
Specification