Methods and apparatus for communication an uplink signaling in a target subframe
The present invention discloses a method and a system for transmitting an uplink signal between a plurality of carriers, user equipment, and a base station, so that channel reciprocity can be effectively utilized. The method in embodiments of the present invention includes: receiving indication signaling sent by a base station; and transmitting an uplink signal in a target subframe of a corresponding target carrier based on the indication signaling.
1. A method, comprising:
receiving, by user equipment (UE), radio resource control (RRC) signaling, wherein the RRC signaling comprises indication signaling, wherein the indication signaling comprises carrier indication information and the carrier indication information comprises a converted-from carrier index indicating a converted-from carrier and a converted-to carrier index indicating a converted-to carrier; and
transmitting, by the UE, a sounding reference signal (SRS) in an uplink symbol of a target subframe of a target carrier based on the indication signaling, wherein the target carrier is the converted-to carrier, the target subframe is a converted-to subframe that is converted from a downlink subframe comprising a downlink symbol, and the uplink symbol is converted from the downlink symbol of the downlink subframe.
2. The method according to claim 1 , wherein the method further comprises:
receiving, by the UE, physical layer signaling, wherein the physical layer signaling indicates a carrier conversion, a subframe conversion, or both.
3. The method according to claim 1 , wherein the indication signaling further comprises at least one of a bandwidth occupied by an uplink signal, a transmission mode, a transmit port, a cyclic shift, timing advance, or a power control parameter.
4. The method according to claim 1 , wherein the method further comprises:
configuring, by the UE, a time-domain location and an occupied symbol length of an uplink signal.
5. The method according to claim 1 , wherein the indication signaling is semi-statically configured by the RRC signaling.
6. The method according to claim 1 , wherein the indication signaling further comprises carrier set information, the indication signaling further indicates a subframe mode, or the indication signaling further comprises carrier set information and further indicates a subframe mode.
7. The method according to claim 1 , wherein the target subframe further transmits downlink control information, downlink data information, or both.
8. A method for transmitting an uplink signal between a plurality of carriers, comprising:
sending, by a base station, radio resource control (RRC) signaling to user equipment, wherein the RRC signaling comprises indication signaling, wherein the indication signaling indicates a target carrier of which the user equipment transmits a sounding reference signal (SRS) in a target subframe, wherein the indication signaling comprises carrier indication information and the carrier indication information comprises a converted-from carrier index indicating a converted-from carrier and a converted-to carrier index indicating a converted-to carrier, wherein the target carrier is the converted-to carrier; and
receiving, by the base station, the SRS in an uplink symbol of the target subframe in the target carrier, wherein the target subframe is a converted-to subframe that is converted from a downlink subframe comprising a downlink symbol, and the uplink symbol is converted from the downlink symbol of the downlink subframe.
9. The method according to claim 8 , wherein the method further comprises:
sending, by the base station, physical layer signaling, wherein the physical layer signaling indicates a carrier conversion, a subframe conversion, or both.
10. The method according to claim 8 , wherein the indication signaling further comprises at least one of a bandwidth occupied by the uplink signal, a transmission mode, a transmit port, a cyclic shift, timing advance, or a power control parameter.
11. The method according to claim 8 , wherein the indication signaling is semi-statically configured by the RRC signaling.
12. The method according to claim 8 , wherein the indication signaling further comprises carrier set information, the indication signaling further indicates a subframe mode, or the indication signaling further comprises carrier set information and further indicates a subframe mode.
13. The method according to claim 8 , wherein the target subframe further transmits downlink control information, downlink data information, or both.
14. User equipment (UE), comprising:
at least one processor coupled to a non-transitory computer-readable storage medium storing programming instructions for execution by the at least one processor, the programming instructions cause the UE to perform steps comprising:
receiving radio resource control (RRC) signaling, wherein the RRC signaling comprises indication signaling, wherein the indication signaling comprises carrier indication information and the carrier indication information comprises a converted-from carrier index indicating a converted-from carrier and a converted-to carrier index indicating a converted-to carrier; and
transmitting a sounding reference signal (SRS) in an uplink symbol of a target subframe of a target carrier based on the indication signaling, wherein the target carrier is the converted-to carrier, wherein the target subframe is a converted-to subframe that is converted from a downlink subframe comprising a downlink symbol, and the uplink symbol is converted from the downlink symbol of the downlink subframe.
15. The UE according to claim 14 , wherein the steps further comprise:
receiving physical layer signaling, wherein the physical layer signaling indicates a carrier conversion, a subframe conversion, or both.
16. The UE according to claim 14 , wherein the indication signaling further comprises at least one of a bandwidth occupied by an uplink signal, a transmission mode, a transmit port, a cyclic shift, timing advance, or a power control parameter.
17. The UE according to claim 14 , wherein the steps further comprise:
configuring a time-domain location and an occupied symbol length of an uplink signal.
18. The UE according to claim 14 , wherein the indication signaling is semi-statically configured by the RRC signaling.
19. The UE according to claim 14 , wherein the indication signaling further comprises carrier set information, the indication signaling further indicates a subframe mode, or the indication signaling further comprises carrier set information and further indicates a subframe mode.
20. The UE according to claim 14 , wherein the target subframe further transmits downlink control information, downlink data information, or both.