Common search space in secondary ENBS
View Patent ↗A method is provided for receiving, at a receiving device, a control information message from a transmitting device. An example method includes determining at a user equipment (UE) a status of the UE and monitoring at the UE based on the status either a common search space (CSS) of a cell or a UE-specific search space (USS) of the cell. The cell is a cell of a secondary eNodeB for communicating with the UE. The method may further include monitoring a CSS and a USS of a cell of a master eNodeB (MeNB) simultaneously while monitoring either the CSS or the USS of the cell of the secondary eNodeB. The status may be a status of the UE with respect to a Random Access Channel (RACH) procedure with the cell.
1. A method comprising:
determining at a user equipment (UE) a status of the UE;
monitoring at the UE based on the status either a common search space (CSS) of a cell or a UE-specific search space (USS) of the cell, wherein the monitoring at the UE comprises monitoring a cell of a secondary eNodeB (SeNB); and
monitoring a CSS and a USS of a cell of a master eNodeB (MeNB) simultaneously while monitoring either the CSS or the USS of the cell of the secondary eNodeB.
2. A method comprising:
determining at a user equipment (UE) a status of the UE;
monitoring at the UE based on the status either a common search space (CSS) of a cell or a UE-specific search space (USS) of the cell, wherein the status is a status of the UE with respect to a Random Access Channel (RACH) procedure with the cell, and wherein the cell is a cell of a secondary eNodeB (SeNB).
3. A method comprising:
determining at a user equipment (UE) a status of the UE with respect to a Random Access Channel (RACH) procedure;
monitoring at the UE one of a common search space (CSS) of a cell or a UE-specific search space (USS) of the cell, based on the status.
4. The method of claim 3 wherein the monitoring comprises:
monitoring the common search space (CSS) during the Random Access Channel (RACH) procedure.
5. The method of claim 3 wherein monitoring comprises:
monitoring the common search space (CSS) when the status indicates the UE is engaged in the Random Access Channel (RACH) procedure.
6. The method of claim 3 wherein the monitoring comprises:
monitoring the CSS for at least one of the group consisting of Downlink Control Information (DCI) format 1A/1C scrambled by Random Access-Radio Network Temporary Identifier (RA-RNTI) and DCI format 0 scrambled by Temporary Cell-RNTI (C-RNTI).
7. The method of claim 3 wherein the monitoring comprises:
monitoring the CSS for only Downlink Control Information (DCI) format 1A/1C scrambled by Random Access-Radio Network Temporary Identifier (RA-RNTI) and DCI format 0 scrambled by Temporary Cell-RNTI (C-RNTI).
8. The method of claim 3 wherein the monitoring comprises:
monitoring the UE-specific search space (USS) when the status indicates the UE is not engaged in the Random Access Channel (RACH) procedure.
9. An apparatus comprising a processor and an associated memory, wherein the processor is configured to:
determine a status of the apparatus; and
monitor based on the status either a common search space (CSS) of a cell or a UE-specific search space (USS) of the cell, wherein the processor is configured to monitor a CSS and a USS of a cell of a master eNodeB simultaneously with monitoring either the CSS or the USS of the cell of the secondary eNodeB.
10. An apparatus comprising a processor and an associated memory, wherein the processor is configured to:
determine a status of the apparatus; and
monitor based on the status either a common search space (CSS) of a cell or a UE-specific search space (USS) of the cell, wherein the status is a status of the apparatus with respect to a Random Access Channel (RACH) procedure.