Apparatus and method for performing communication using frame structure supporting H-FDD operation
A method for performing communication using a frame structure that supports a half-frequency division duplex (H-FDD) operation and a device using the same are disclosed. A base station performs resource allocation scheduling to support H-FDD user equipment operation in a mobile communication system. For example, the base station allocates first, second and last uplink subframes for idle subframes within a specific frame or punctures them, so that the H-FDD user equipment does not use the uplink subframes. The base station transmits the scheduled resource allocation information to the user equipment through a superframe header, a preamble and a MAP. The user equipment which has received the scheduled resource allocation information (subframe index and location that can be used by the user equipment) transmits and receives a signal based on the resource allocation information.
1. A method for performing a half-Frequency division duplex (H-FDD) operation at a H-FDD mobile station (H-FDD MS) using a FDD frame structure that supports the H-FDD operation in a mobile communication system, the method comprising:
receiving a superframe header (SFH) or a preamble from a base station (BS) through a first downlink subframe; and
transmitting a signal through at least one uplink subframe, except for a first uplink subframe, a second uplink subframe and a last uplink subframe of a FDD frame,
wherein the first uplink subframe, the second uplink subframe and the last uplink subframe of the FDD frame are configured as idle subframes for the H-FDD MS,
wherein the first uplink subframe is located at a beginning of the FDD frame and is immediately followed by the second uplink subframe in the FDD frame, and
wherein the first uplink subframe is aligned with the first downlink subframe in a time domain of the FDD frame.
2. The method of claim 1 , wherein downlink subframes corresponding to a HARQ (Hybrid Automatic Repeat reQuest) timing of the first, second and last uplink subframes are further configured as the idle subframes for the H-FDD MS.
3. The method of claim 1 , wherein a channel bandwidth of an uplink or a downlink frame is any one of 5 MHz, 10 MHz and 20 MHz and a cyclic prefix (CP) length is ⅛ of a useful symbol length.
4. The method of claim 3 , wherein a ratio between the number of downlink subframes and the number of uplink subframes in a specific FDD frame is 4:4.
5. The method of claim 1 , wherein the second uplink subframe and the last uplink subframe in the idle subframes comprises transition gaps between transmission and reception.
6. A method for performing a half-frequency division duplex (H-FDD) operation at a base station (BS) in a mobile communication system using a frequency division duplex (FDD) frame structure supporting the H-FDD operation, the method comprising:
transmitting a superframe header (SFH) or a preamble to a H-FDD mobile station (H-FDD MS) through a first downlink subframe; and
scheduling at least one subframe, except for a first uplink subframe, a second uplink subframe and a last uplink subframe of a FDD frame,
wherein the first uplink subframe, the second uplink subframe and the last uplink subframe of the FDD frame are configured as idle subframes for the H-FDD MS,
wherein the first uplink subframe is located at a beginning of the FDD frame and is immediately followed by the second uplink subframe in the FDD frame, and
wherein the first uplink subframe is aligned with the first downlink subframe in a time domain of the FDD frame.
7. The method of claim 6 , wherein downlink subframes corresponding to a HARQ (Hybrid Automatic Repeat reQuest) timing of the first uplink subframe, the second uplink subframe, and the last uplink subframe are further configured as the idle subframes for the H-FDD MS.
8. The method of claim 7 , further comprising:
transmitting data to the H-FDD MS through one or more other downlink subframes excluding the downlink subframes.
9. A half-frequency division duplex mobile station (H-FDD MS) for performing a HDD operation using a frequency division duplex (FDD) frame structure that supports the H-FDD operation in a mobile communication system, the H-FDD MS comprising:
a receiver;
a transmitter; and
a processor,
wherein the processor is configured to control the receiver to receive a superframe header (SFH) or a preamble from a base station (BS) through a first downlink subframe and the transmitter to transmit a signal through at least one uplink subframe, except for a first uplink subframe, a second uplink subframe and a last uplink subframe of a FDD frame,
wherein the first uplink subframe, the second uplink subframe and the last uplink subframe of the FDD frame are configured as idle subframes for the H-FDD MS,
wherein the first uplink subframe is located at a beginning of the FDD frame and is immediately followed by the second uplink subframe in the FDD frame, and
wherein the first uplink subframe is aligned with the first downlink subframe in a time domain of the FDD frame.
10. The H-FDD MS of claim 9 , wherein downlink subframes corresponding to a HARQ (Hybrid Automatic Repeat reQuest) timing of the first uplink subframe, the second uplink subframe and the last uplink subframe are further configured as the idle subframes for the H-FDD MS.
11. A base station (BS) for transmitting resource allocation information in a mobile communication system using a frequency division duplex (FDD) frame structure supporting a half-frequency division duplex (H-FDD) operation, the BS comprising:
a transmitter; and
a processor,
wherein the processor is configured to control the transmitter to transmit a superframe header (SFH) or a preamble to a H-FDD mobile station (H-FDD MS) through a first downlink subframe and schedule at least one subframe, except for a first uplink subframe, a second uplink subframe and a last uplink subframe of a FDD frame,
wherein the first uplink subframe, the second uplink subframe and the last uplink subframe of the FDD frame are configured as idle subframes for the H-FDD MS,
wherein the first uplink subframe is located at a beginning of the FDD frame and the first uplink subframe is immediately followed by the second uplink subframe in the FDD frame, and
wherein the first uplink subframe is aligned with the first downlink subframe in a time domain of the FDD frame.
12. The BS of claim 11 , wherein downlink subframes corresponding to a HARQ (Hybrid Automatic Repeat reQuest) timing of the first uplink subframe, the second uplink subframe and the last uplink subframe are further configured as the idle subframes for the H-FDD MS.