System and method for multi-carrier network operation
Methods, devices, and systems for multi-carrier network operation are disclosed. In one embodiment, a method of performing channel scrambling in a multi-carrier network, wherein the multi-carrier network includes a first component carrier (“CC”) and a second CC between a base station and a user equipment (“UE”) comprises receiving a Cell Radio Network Temporary Identifier (“C-RNTI”) and a cell identification (“ID”) for at least one of the first CC and the second CC; and using the RNTI and the cell ID to perform scrambling of information transmitted on at least one of the first CC and the second CC.
1. A base station, comprising:
one or more hardware processors;
a non-transitory computer-readable storage medium coupled to the one or more processors and storing programming instructions for execution by the one or more processors, the programming instructions instruct the one or more processors to:
assign, to a user equipment (UE), a Cell Radio Network Temporary Identity (C-RNTI);
transmit, to the UE, a component carrier assignment message via a first component carrier different from a second component carrier, wherein the component carrier assignment message identifies the second component carrier, and instructs the UE to monitor a physical downlink control channel (PDCCH) of the second component carrier for physical downlink shared channel (PDSCH) assignment, wherein the component carrier assignment message further indicates whether the second component carrier is a Type A or Type B component carrier;
in case the second component carrier is a Type A component carrier according to the component carrier assignment message, configure a physical cell identity (PCI) of the second component carrier using Radio Resource Configuration (RRC) signaling;
in case the second component carrier is a Type B component carrier according to the component carrier assignment message, configure a virtual PCI of the second component carrier using RRC signaling;
scramble information for the UE with a scrambling sequence based on the C-RNTI and the PCI or the virtual PCI of the second component carrier, wherein the PCI or the virtual PCI of the second component carrier is different from a PCI of the first component carrier; and
transmit, to the UE, the scrambled information using the second component carrier.
2. The base station of claim 1 , wherein at least one of the first component carrier or the second component carrier is a cell.
3. The base station of claim 1 , wherein the first component carrier is an anchor component carrier.
4. The base station of claim 1 , wherein the second component carrier is a non-anchor component carrier.
5. The base station of claim 1 , wherein the first component carrier is a member of at least one of a set of active component carriers or a set of assigned component carriers.
6. The base station of claim 1 , wherein the second component carrier is a member of at least one of a set of active component carriers or a set of assigned component carriers.
7. The base station of claim 1 , wherein the C-RNTI is used to perform channel scrambling on the first component carrier and the second component carrier.
8. The base station of claim 1 , wherein the base station does not transmit a synchronization signal on the second component carrier.
9. The base station of claim 1 , wherein the component carrier assignment message is transmitted using a Radio Resource Control (“RRC”) signaling.
10. The base station of claim 1 , wherein performing scrambling on the second component carrier includes scrambling at least one of a control channel or a traffic channel of the second component carrier.
11. A method, comprising:
assigning, to a user equipment (UE), a Cell Radio Network Temporary Identity (C-RNTI);
transmitting, to the UE, a component carrier assignment message via a first component carrier different from a second component carrier, wherein the component carrier assignment message identifies the second component carrier, and instructs the UE to monitor a physical downlink control channel (PDCCH) of the second component carrier for physical downlink shared channel (PDSCH) assignment, wherein the component carrier assignment message further indicates whether the second component carrier is a Type A or Type B component carrier;
in case the second component carrier is a Type A component carrier according to the component carrier assignment message, configuring a physical cell identity (PCI) of the second component carrier using Radio Resource Configuration (RRC) signaling;
in case the second component carrier is a Type B component carrier according to the component carrier assignment message, configuring a virtual PCI of the second component carrier using RRC signaling;
scrambling information for the UE with a scrambling sequence based on the C-RNTI and the PCI or the virtual PCI of the second component carrier, wherein the PCI or the virtual PCI of the second component carrier is different from a PCI of the first component carrier; and
transmitting, to the UE, the scrambled information using the second component carrier.
12. The method of claim 11 , wherein at least one of the first component carrier or the second component carrier is a cell.
13. The method of claim 11 , wherein the first component carrier is an anchor component carrier.
14. The method of claim 11 , wherein the second component carrier is a non-anchor component carrier.
15. The method of claim 11 , wherein the first component carrier is a member of at least one of a set of active component carriers or a set of assigned component carriers.
16. The method of claim 11 , wherein the second component carrier is a member of at least one of a set of active component carriers or a set of assigned component carriers.
17. The method of claim 11 , wherein the C-RNTI is used to perform channel scrambling on the first component carrier and the second component carrier.
18. The method of claim 11 , wherein a synchronization signal is not transmitted on the second component carrier.
19. The method of claim 11 , wherein the component carrier assignment message is transmitted using a Radio Resource Control (“RRC”) signaling.
20. The method of claim 11 , wherein performing scrambling on the second component carrier includes scrambling at least one of a control channel or a traffic channel of the second component carrier.
21. A non-transitory computer readable medium storing instructions to cause a processor to perform operations comprising:
assigning, to a user equipment (UE), a Cell Radio Network Temporary Identity (C-RNTI);
transmitting, to the UE, a component carrier assignment message via a first component carrier different from a second component carrier, wherein the component carrier assignment message identifies the second component carrier, and instructs the UE to monitor a physical downlink control channel (PDCCH) of the second component carrier for physical downlink shared channel (PDSCH) assignment, wherein the component carrier assignment message further indicates whether the second component carrier is a Type A or Type B component carrier;
in case the second component carrier is a Type A component carrier according to the component carrier assignment message, configuring a physical cell identity (PCI) of the second component carrier using Radio Resource Configuration (RRC) signaling;
in case the second component carrier is a Type B component carrier according to the component carrier assignment message, configuring a virtual PCI of the second component carrier using RRC signaling;
scrambling information for the UE with a scrambling sequence based on the C-RNTI and the PCI or the virtual PCI of the second component carrier, wherein the PCI or the virtual PCI of the second component carrier is different from a PCI of the first component carrier; and
transmitting, to the UE, the scrambled information using the second component carrier.
22. The base station of claim 1 , wherein the PCI of the second component carrier is a Virtual Cell Identity.