Uplink coordinated multi-point
View Patent ↗Disclosed embodiments may include an apparatus having one or more processors coupled to one or more computer-readable storage media. The one or more processors may be configured to transmit and/or receive channel state information reference signal (CSI-RS) resource configuration information, demodulation reference signals (DM-RS), uplink sounding reference signals (SRS), and power control parameters to support uplink coordinated multi-point (CoMP) operations. Other embodiments may be disclosed.
1. A user equipment (UE), comprising:
first circuitry to determine a physical layer cell identity corresponding to a cell of an evolved universal mobile telecommunication system terrestrial radio access network (E-UTRAN);
second circuitry to receive:
an indicator of a virtual cell identity via radio resource control signaling, the virtual cell identity different from the physical layer cell identity, and
a cyclic shift hop initialization value different from the virtual cell identity; and
third circuitry to generate:
a demodulation reference signal (DM-RS) parameter based at least in part on the virtual cell identity, and
a cyclic shift for a DM-RS by initializing a pseudo-random sequence generator with the cyclic shift hop initialization value.
2. The UE of claim 1 , wherein the DM-RS parameter is a group hopping pattern.
3. The UE of claim 1 , wherein the DM-RS parameter is associated with a physical uplink shared channel.
4. The UE of claim 1 , wherein the DM-RS parameter is a sequence hopping parameter.
5. The UE of claim 1 , wherein generate a DM-RS parameter based at least in part on the virtual cell identity comprises initialize a pseudo-random sequence generator with the virtual cell identity.
6. The UE of claim 1 , wherein the DM-RS parameter is a cyclic shift for a DM-RS for a physical uplink shared channel.
7. The UE of claim 1 , further comprising: fourth circuitry to communicate with a positioning network.
8. The UE of claim 1 , wherein the cyclic shift hop initialization value is received via radio resource control signaling.
9. An eNB, comprising:
first circuitry to provide, to a user equipment (UE), a physical layer cell identity corresponding to a cell of an evolved universal mobile telecommunication system terrestrial radio access network (E-UTRAN);
second circuitry to select:
a virtual cell identity, the virtual cell identity different from the physical layer cell identity, and
a cyclic shift hop initialization value different from the virtual cell identity; and
third circuitry to provide, to the UE via radio resource control signaling:
an indicator of the virtual cell identity for use in generating a demodulation reference signal (DM-RS) parameter based at least in part on the indicator, and
an indicator of the cyclic shift hop initialization value for use in generating a cyclic shift for a DM-RS by initializing a pseudo-random sequence generator with the cyclic shift hop initialization value.
10. The eNB of claim 9 , wherein the DM-RS parameter is a group hopping pattern.
11. The eNB of claim 9 , wherein the DM-RS parameter is associated with a physical uplink shared channel.
12. The eNB of claim 9 , wherein the DM-RS parameter is a sequence hopping parameter.
13. The eNB of claim 9 , wherein provide, to a UE, the indicator of the virtual cell identity for use in generating a DM-RS parameter based at least in part on the indicator comprises provide, to the UE, the indicator for use in initializing a pseudo-random sequence generator with the virtual cell identity.
14. The eNB of claim 9 , wherein the DM-RS parameter is a cyclic shift for a DM-RS for a physical uplink shared channel.
15. The eNB of claim 9 , wherein the indicator of the virtual cell identity is provided to the UE for use in generating a DM-RS parameter based at least in part on the indicator and for use in generating a sounding reference signal (SRS) parameter based at least in part on the indicator.
16. The eNB of claim 9 , wherein the cyclic shift hop initialization value is provided via radio resource control signaling.
17. A user equipment (UE), comprising:
first circuitry to receive an indicator of a UE-specific acknowledge and negative-acknowledge (AN) resource offset for a physical uplink control channel (PUCCH), wherein the AN resource offset is different from a virtual cell identity used by the UE to generate a demodulation reference signal (DM-RS) parameter;
second circuitry to determine a PUCCH resource based at least in part on the AN resource offset; and
third circuitry to use the determined PUCCH resource for transmission of AN.
18. The UE of claim 17 , wherein the indicator of the AN resource offset is received via radio resource control signaling.
19. An eNB, comprising:
first circuitry to select a user equipment (UE)-specific acknowledge and negative-acknowledge (AN) resource offset for a physical uplink control channel (PUCCH), wherein the AN resource offset is different from a virtual cell identity used by the UE to generate a demodulation reference signal (DM-RS) parameter;
second circuitry to provide an indicator of the AN resource offset, to a UE, for use in determining a PUCCH resource based at least in part on the indicator; and
third circuitry to receive AN transmitted from the UE in the determined PUCCH resource.
20. The eNB of claim 19 , wherein the indicator of the AN resource offset is provided, to the UE, via radio resource control signaling.