Legal claims defining the scope of protection, as filed with the USPTO.
1. A method comprising: transmitting a plurality of sets of UE-specific sounding reference signal (SRS) parameters associated with aperiodic SRS (ap-SRS) transmission over different carriers to a user equipment via upper layer messaging in a multi-carrier wireless communication system, wherein the plurality of sets of UE-specific SRS parameters are jointly signaled together via a single radio resource control (RRC) message; determining a selected set of UE-specific SRS parameters and an indicated carrier for the UE; and transmitting a grant to the UE over a primary carrier, wherein the grant comprises information for the UE to send an aperiodic SRS (ap-SRS) over the indicated carrier using the selected set of UE-specific SRS parameters, and wherein the grant further comprises a carrier indicator field indicating the indicated carrier.
2. The method of claim 1 , wherein each set of UE-specific SRS parameters comprises an SRS bandwidth, a frequency domain position, a transmission comb, a cyclic shift, and a number of antenna ports.
3. The method of claim 1 , wherein the plurality of sets of UE-specific SRS parameters are configured as part of physical parameters of the RRC message, and wherein the RRC message configures ap-SRS for multiple secondary carriers.
4. The method of claim 1 , wherein the grant is transmitted in a physical downlink control channel (PDCCH) that supports multiple downlink control information (DCI) formats, and wherein each DCI format corresponds to one or more sets of predefined UE-specific SRS parameters configured via upper layer messaging.
5. The method of claim 1 , wherein the SRS parameters are transmitted via direct signaling or delta signaling.
6. A base station, comprising: an information encoding module that encodes a plurality of sets of UE-specific SRS parameters associated with aperiodic SRS (ap-SRS) transmission over different carriers for a user equipment (UE); and a transmitter that transmits the plurality of sets of UE-specific SRS parameters via upper layer messaging over a primary carrier, wherein the plurality of sets of UE-specific SRS parameters are jointly signaled together via a single radio resource control (RRC) message, wherein the transmitter also transmits a grant to the UE over the primary carrier, and wherein the grant comprises triggering information for the UE to send an aperiodic SRS (ap-SRS) over an indicated carrier using a selected set of UE-specific SRS parameters, and wherein the grant further comprises a carrier indicator field indicating the indicated carrier.
7. The base station of claim 6 , wherein each set of UE-specific SRS parameters comprises an SRS bandwidth, a frequency domain position, a transmission comb, a cyclic shift, and a number of antenna ports.
8. The base station of claim 6 , wherein the plurality of sets of UE-specific SRS parameters are configured as part of physical parameters of the RRC message, and wherein the RRC message configures ap-SRS for multiple secondary carriers.
9. The base station of claim 6 , wherein the grant is transmitted in a physical downlink control channel (PDCCH) that supports multiple downlink control information (DCI) formats, and wherein each DCI format corresponds to one or more sets of predefined UE-specific SRS parameters configured via upper layer messaging.
10. The base station of claim 6 , wherein the SRS parameters are transmitted via direct signaling or delta signaling.
11. A method comprising: receiving, by a user equipment, a plurality of sets of UE-specific sounding reference signal (SRS) parameters from a base station via upper layer messaging in a multi-carrier wireless communication system, wherein the plurality sets of UE-specific SRS parameters are associated with aperiodic SRS (ap-SRS) transmission over different carriers by the UE, and wherein the plurality of sets of UE-specific SRS parameters are jointly signaled together via a single radio resource control (RRC) message; receiving a grant from the base station over a primary carrier, wherein the grant comprises triggering information for the UE to send an aperiodic SRS (ap-SRS) over an indicated carrier using a selected set of UE-specific SRS parameters, and wherein the grant further comprises a carrier indicator field indicating the indicated carrier; and transmitting the ap-SRS over the indicated carrier using the selected set of UE-specific SRS parameters.
12. The method of claim 11 , wherein each set of UE-specific SRS parameters comprises an SRS bandwidth, a frequency domain position, a transmission comb, a cyclic shift, and a number of antenna ports.
13. The method of claim 11 , wherein the plurality of sets of UE-specific SRS parameters are configured as part of physical parameters of the RRC message, and wherein the RRC message configures ap-SRS for multiple secondary carriers.
14. The method of claim 11 , wherein the grant is transmitted in a physical downlink control channel (PDCCH) that supports multiple downlink control information (DCI) formats, and wherein each DCI format corresponds to one or more sets of predefined UE-specific SRS parameters configured via upper layer messaging.
15. The method of claim 11 , wherein the SRS parameters are transmitted via direct signaling or delta signaling.
16. The method of claim 11 , wherein each SRS parameter is signaled directly without further processing.
17. The method of claim 11 , wherein a part of the SRS parameters are signaled in a differential way as compared to a reference point.
18. A user equipment (UE) comprising: a receiver that receives a plurality of sets of UE-specific sounding reference signal (SRS) parameters from a base station via upper layer messaging in a multi-carrier wireless communication system, wherein the plurality sets of UE-specific SRS parameters are associated with aperiodic SRS (ap-SRS) transmission over different carriers by the UE, wherein the plurality of sets of UE-specific SRS parameters are jointly signaled together via a single radio resource control (RRC) message, wherein the UE also receives a grant from the base station over a primary carrier, wherein the grant comprises triggering information for the UE to send an aperiodic SRS (ap-SRS) over an indicated carrier using a selected set of UE-specific SRS parameters, and wherein the grant further comprises a carrier indicator field indicating the indicated carrier; and a transmitter that transmits the ap-SRS over the indicated carrier using the selected set of UE-specific SRS parameters.
19. The UE of claim 18 , wherein each set of UE-specific SRS parameters comprises an SRS bandwidth, a frequency domain position, a transmission comb, a cyclic shift, and a number of antenna ports.
20. The UE of claim 18 , wherein the plurality of sets of UE-specific SRS parameters are configured as part of physical parameters of the RRC message, and wherein the RRC message configures ap-SRS for multiple secondary carriers.
21. The UE of claim 18 , wherein the grant is transmitted in a physical downlink control channel (PDCCH) that supports multiple downlink control information (DCI) formats, and wherein each DCI format corresponds to one or more sets of predefined UE-specific SRS parameters configured via upper layer messaging.
22. The UE of claim 18 , wherein the SRS parameters are transmitted via direct signaling or delta signaling.
23. The UE of claim 18 , wherein each SRS parameter is signaled directly without further processing.
24. The UE of claim 18 , wherein a part of the SRS parameters are signaled in a differential way as compared to a reference point.
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February 23, 2016
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