Radio frame and sounding reference signal sending method in mobile communication system

1. A method for sending a sounding reference signal in a mobile communication system, comprising:

a user equipment UE sending the sounding reference signal to an e-node-B, eNB in time-frequency resources corresponding to a guard space in a radio frame, wherein the guard space is one or more of a downlink-to-uplink guard space, an uplink-to-downlink guard space, reserved subframes, or reserved idle resources;

wherein when the sounding reference signal is sent in the time-frequency resources corresponding to the uplink-to-downlink guard space, the sounding reference signal is sent in one or more of first n OFDM symbols of the time-frequency resources corresponding to the guard space, wherein, a destination sounding reference signal is sent in one of the n OFDM symbols, and the value of n is 1, 2, 3, 4, 5 or 6;

when the sounding reference signal is sent in the time-frequency resources corresponding to the uplink to downlink guard space, an original uplink timing advance amount is increased by Offset, wherein the Offset is one or more OFDM symbols of n OFDM symbols and a time length corresponding to one or more cyclic prefixes corresponding to the one or more OFDM symbols; and the value of n is 0, 1, 2, 3, 4, 5 or 6;

in a time division duplex system, in the step of the UE sending the sounding reference signal to the eNB in the time-frequency resources corresponding to the guard space in the radio frame, the UE sending the sounding reference signal to the eNB in time-frequency resources corresponding to a guard period or an uplink pilot time slot of a special subframe in the radio frame;

in a time division duplex system, in the step of the UE sending the sounding reference signal to the eNB in the time-frequency resources corresponding to the guard space in the radio frame, the UE sending the sounding reference signal to the eNB in time-frequency resources corresponding to an uplink time slot between an uplink pilot time slot and a guard period of a special subframe in the radio frame.

2. The method of claim 1 , wherein,

when the UE sends the sounding reference signal to the eNB in the time-frequency resources corresponding to the guard period of the special subframe in the radio frame, the UE uses one or more of last n orthogonal frequency division multiplexing OFDM symbols of the guard period of the special subframe in the radio frame to send the sounding reference signal to the eNB, and the value of n is 1, 2, 3, 4, 5 or 6.

3. The method of claim 1 , wherein,

the uplink pilot time slot comprises two parts, first part is adjacent to a general uplink subframe and is for sending the sounding reference signal or a physical random access channel PRACH, and second part is adjacent to the guard period and is for sending the sounding reference signal.

4. The method of claim 1 , wherein,

the reserved idle resources can be a time slot, or a subframe, or m OFDM symbols, wherein the m is a natural number;

the sounding reference signal is sent in one or more of n OFDM symbols of the reserved idle resources, and the n is 0, 1, 2, 3, 4, 5 or 6, and the n is less than or equal to m.

5. The method of claim 1 , wherein,

the sounding reference signal is at least one of a periodic sounding reference signal and an aperiodic sounding reference signal.

6. The method of claim 1 , wherein, in a frequency division duplex system,

in the step of the UE sending the sounding reference signal to the eNB in the time-frequency resources corresponding to the guard space in the radio frame, the UE sends the sounding reference signal to the eNB in the reserved idle resources in the radio frame, and the reserved idle resources are the reserved subframes, or one or more of m OFDM symbols reserved in a subframe, or an uplink time slot reserved in the subframe, and m is 1, 2, 3, 4, 5 or 6.

7. A device for sending a sounding reference signal, applied to a user equipment UE in a mobile communication system, comprising a radio frame construction module and a sounding reference signal transmission module, wherein:

the radio frame construction module is configured to construct a radio frame as follows:

the radio frame comprising time-frequency resources corresponding to a guard space, and the guard space being one or more of a downlink-to-uplink guard space, an uplink-to-downlink guard space, reserved subframes, or reserved idle resources;

the sounding reference signal transmission module is configured to send the sounding reference signal to an e-node-B, eNB of the mobile communication system in the time-frequency resources corresponding to the guard space in the radio frame;

wherein, in a time division duplex system,

the radio frame construction module is configured to construct the radio frame as follows: the time-frequency resources corresponding to the guard space of the radio frame being time-frequency resources corresponding to a guard period or an uplink pilot time slot of a special subframe;

the sounding reference signal transmission module is configured to send the sounding reference signal in the time-frequency resources corresponding to the guard period or the uplink pilot time slot of the special subframe;

wherein the radio frame construction module is configured to construct the radio frame as follows:

the uplink pilot time slot comprising two parts, first part being adjacent to a general uplink subframe and being for sending the sounding reference signal or a physical random access channel PRACH, and second part being adjacent to the guard period and being for sending the sounding reference signal.

8. The device of claim 7 , wherein, the radio frame construction module is configured to construct the radio frame as follows:

one or more of last n orthogonal frequency division multiplexing OFDM symbols of the guard period being for sending the sounding reference signal, wherein the n is 1, 2, 3, 4, 5 or 6.

9. The device of claim 7 , wherein, in a time division duplex system,

the radio frame construction module is configured to construct the radio frame as follows: the time-frequency resources corresponding to the guard space being time-frequency resources corresponding to an uplink time slot between a guard period and an uplink pilot time slot in a special subframe;

the sounding reference signal transmission module is configured to send the sounding reference signal in the time-frequency resources corresponding to the uplink time slot.

10. The device of claim 7 , wherein, the radio frame construction module is configured to construct the radio frame as follows:

when the sounding reference signal is sent in the time-frequency resources corresponding to the uplink-to-downlink guard space, one or more of first n OFDM symbols of the time-frequency resources corresponding to the guard space being for sending the sounding reference signal, wherein a destination sounding reference signal is sent in one of the n OFDM symbols, and the value of n is 0, 1, 2, 3, 4, 5 or 6.

11. The device of claim 7 , wherein, in a frequency division duplex system, the radio frame construction module is configured to construct the radio frame as follows:

corresponding time-frequency resources being the reserved idle resources in the radio frame, the reserved resources being the reserved subframes, or one or more of m OFDM symbols reserved in a subframe, or an uplink time slot reserved in the subframe, and m being 1, 2, 3, 4, 5 or 6.