Apparatus and method for Cross-Carrier Quasi Co-Location Signaling in a new carrier type (NCT) wireless network
View Patent ↗Generally, this disclosure provides devices, systems and methods for Cross-Carrier Quasi Co-Location Signaling in an NCT Wireless Network. A UE device may include a receiver circuit to receive a QCL signaling message from a primary cell, the QCL signaling message for a configured secondary cell to identify a primary or one or more secondary cells that are Quasi Co-located with the secondary cell for which the message is provided. The UE device may also include a QCL signal decoding module to decode the QCL signaling message and to determine QCL synchronization parameters. The UE device may further include a synchronization module to synchronize the UE with the primary or one or more secondary cells based on the QCL synchronization parameters obtained from the QCL message received from the primary cell.
1. User Equipment (UE) comprising:
a receiver circuit to receive a Quasi Co-location (QCL) signaling message from a primary carrier of a serving evolved Node B (eNB), said QCL signaling message to identify one or more secondary carriers, said secondary carriers Quasi Co-located with said primary carrier of said serving eNB;
a QCL signal decoding module to decode said QCL signaling message and to determine QCL synchronization parameters; and
a synchronization module to synchronize said UE with one of said secondary carriers based on said QCL synchronization parameters obtained from a Cell Specific Reference Signal (CRS) message received from said primary carrier;
wherein:
said primary carrier is a legacy carrier type;
said primary carrier provides signals to said UE to identify which secondary carriers are QCL; and
said one or more secondary carriers are a non-standalone New Carrier Type.
2. The UE of claim 1 , wherein said QCL signaling message is further to identify one or more neighbor eNB secondary carriers, one of said neighbor eNB secondary carriers QCL with one other of said neighbor eNB secondary carriers.
3. The UE of claim 1 , wherein said QCL synchronization parameters include Doppler shift and Doppler spread.
4. The UE of claim 1 , wherein said QCL synchronization parameters include delay spread and average delay.
5. The UE of claim 1 , wherein said QCL synchronization parameters include average gain.
6. The UE of claim 1 , wherein a Reference Signal Receive Power (RSRP) measurement of said CRS message received from said primary carrier is employed as the RSRP of said secondary carrier.
7. The UE of claim 1 , wherein said QCL signaling message is a Channel State Information Reference Signal (CSI-RS) configuration message (CSI-RS-ConfigNZP-r12) comprising one or more cell indices, each of said cell indices identifying one of said secondary carriers.
8. The UE of claim 1 , wherein said primary carrier operates in a legacy carrier mode and said secondary carriers operate in a non-standalone New Carrier Type (NCT) mode.
9. The UE of claim 1 , wherein said UE is configured to operate in transmission mode 10 employing QCL type B.
10. An article of manufacture comprising at least one non-transitory computer readable storage medium, a processor, and instructions encoded in said non-transitory computer readable storage medium, said instructions being used with said processor to effect:
providing a primary carrier;
providing a secondary carrier Quasi Co-located (QCL) with said primary carrier;
wherein:
said primary carrier is a legacy carrier type;
said primary carrier provides cell-specific reference signals to said user equipment;
said primary carrier provides a QCL signal to a user equipment;
said QCL signal identifies said secondary carrier as QCL with said primary carrier;
said QCL signal further provides QCL synchronization parameters
said primary carrier provides signals to said user equipment to identify which secondary carriers are QCL; and
said one or more secondary carriers are a non-standalone New Carrier Type.
11. The article of manufacture of claim 10 , wherein said QCL signaling message is further to identify one or more neighbor eNB secondary carriers, one of said neighbor eNB secondary carriers QCL with one other of said neighbor eNB secondary carriers.
12. The article of manufacture of claim 10 , wherein said QCL synchronization parameters include Doppler shift and Doppler spread.
13. The article of manufacture of claim 10 , wherein said QCL synchronization parameters include delay spread and average delay.
14. The article of manufacture of claim 10 , wherein said QCL synchronization parameters include average gain.
15. The article of manufacture of claim 10 , said instructions further being used with said processor to effect:
receiving a Reference Signal Receive Power (RSRP) measurement of said CRS message transmitted to said user equipment; and
utilizing said RSRP measurement as a RSRP for a secondary carrier;
wherein a Reference Signal Receive Power (RSRP) measurement of said CRS message transmitted to said UE from said primary carrier is provided as the RSRP of said secondary carrier.
16. The article of manufacture of claim 10 , wherein said QCL signaling message is a Channel State Information Reference Signal (CSI-RS) configuration message (CSI-RS-ConfigNZP-r12) comprising one or more cell indices, each of said cell indices identifying one of said secondary carriers.
17. The article of manufacture of claim 10 , wherein said primary carrier configures said UE to operate in transmission mode 10 employing QCL type B.
18. A method comprising:
receiving a primary carrier by user equipment, said primary carrier being provided by an eNB, said primary carrier comprising Quasi Co-location (QCL) signaling message, said QCL signaling message identifying one or more secondary carriers, said secondary carriers QCL with said primary carrier of said serving eNB;
decoding said QCL signaling message;
determining QCL synchronization parameters from said decoded QCL signaling message;
receiving a Cell Specific Reference Signal (CRS) message from said primary carrier; and
synchronizing said UE with one of said secondary carriers based on said QCL synchronization parameters obtained from said CRS message
wherein:
said primary carrier is a legacy carrier type;
said one or more secondary carriers are a non-standalone New Carrier Type.
19. The method of claim 18 , wherein said QCL signaling message is further to identify one or more neighbor eNB secondary carriers, one of said neighbor eNB secondary carriers QCL with one other of said neighbor eNB secondary carriers.
20. The method of claim 18 , wherein said QCL synchronization parameters include Doppler shift and Doppler spread.
21. The method of claim 18 , wherein said QCL synchronization parameters include delay spread and average delay.
22. The method of claim 18 , wherein said QCL synchronization parameters include average gain.
23. The method of claim 18 , further comprising measuring a Reference Signal Receive Power (RSRP) of said CRS message received from said primary carrier and employing said measured RSRP as an RSRP of said secondary carrier.
24. The method of claim 18 , wherein said QCL signaling message is a Channel State Information Reference Signal (CSI-RS) configuration message (CSI-RS-ConfigNZP-r12) comprising one or more cell indices, each of said cell indices identifying one of said secondary carriers.