Carrier aggregation of carriers with subframe restrictions

Abstract

Embodiments contemplate enabling relay node uplink control information transmission on an interface between a relay node and a donor eNodeB (DeNB) in one or more subframes. Embodiments contemplate techniques to avoid restrictions on uplink transmissions on a cell (perhaps due to subframe configuration), such as on a primary cell, where the restrictions may make relay node uplink control information transmission difficult (if not impossible) on the interface between a relay node and a donor eNodeB (DeNB). Embodiments also contemplate that resources on the interface between the relay node and the donor eNodeB may be scheduled across one or more component carriers or serving cells.

1 . A wireless transmit/receive unit (WTRU) comprising:
 a processor configured to:   communicate with at least a first serving cell and a second serving cell via at least one interface, wherein communications with the first serving cell are performed according to a first subframe partitioning configuration and communications performed with the second serving cell are performed according to a second subframe partitioning configuration;   determine that a transmission direction associated with a first subframe of the first subframe partitioning configuration is a different transmission direction than a transmission direction associated with a corresponding subframe of the second subframe partitioning configuration; and   apply the first subframe partitioning configuration during at least the first subframe based on the first serving cell being a primary serving cell (PCell) and the second serving cell being a secondary cell (SCell).   
     
     
         2 . (canceled) 
     
     
         3 . The WTRU of  claim 1 , wherein the at least one interface comprises a Uu interface or a Un interface. 
     
     
         4 . The WTRU of  claim 1 , wherein the first subframe partitioning configuration is used unchanged, and the second subframe partitioning configuration is restricted to those subframes that have the same transmission direction as corresponding subframes of the first subframe partitioning configuration. 
     
     
         5 . (canceled) 
     
     
         6 . The WTRU of  claim 1 , wherein the first subframe partitioning configuration and the second subframe partitioning configuration are provided from a node via a radio resource control (RRC) signal, the node being in communication with the wireless communication system, and the node being at least one of an evolved-Node B (eNB) or a donor evolved-Node B (DeNB). 
     
     
         7 . The WTRU of  claim 1 , wherein the WTRU is further configured to operate in a Time-Division Duplexing mode. 
     
     
         8 . (canceled) 
     
     
         9 . The WTRU of  claim 1 , wherein, when transmission directions of one or more subframes of the second subframe partitioning configuration are different from transmission directions of one or more corresponding subframes of the first subframe partitioning configuration, the WTRU is configured to not use the one or more subframes of the second subframe partitioning configuration and to use the one or more subframes of the first subframe partitioning configuration. 
     
     
         10 . The WTRU of  claim 1 , wherein the WTRU is configured to operate in a half-duplex mode. 
     
     
         11 . A method comprising:
 communicating with at least a first serving cell and a second serving cell via at least one interface, wherein communications with the first serving cell are performed according to a first subframe partitioning configuration and communications performed with the second serving cell are performed according to a second subframe partitioning configuration;   determining that a transmission direction associated with a first subframe of the first subframe partitioning configuration is a different transmission direction than a transmission direction associated with a corresponding subframe of the second subframe partitioning configuration; and   applying the first subframe partitioning configuration during at least the first subframe based on the first serving cell being a primary serving cell (PCell) and the second serving cell being a secondary serving cell (SCell).   
     
     
         12 . (canceled) 
     
     
         13 . The method of  claim 11 , wherein the at least one interface comprises a Uu interface or a Un interface. 
     
     
         14 . The method of  claim 12 , further comprising using the subframe partitioning configuration of the Pcell unchanged, and restricting the use of the subframe partitioning configuration of the Scell to those subframes that have the same transmission direction as corresponding subframes of the first subframe partitioning configuration. 
     
     
         15 . (canceled) 
     
     
         16 . The method of  claim 11 , further comprising receiving the first subframe partitioning configuration and the second subframe partitioning configuration from a node via a radio resource control (RRC) signal, the node being at least one of an evolved-Node B (eNB) or a donor evolved-Node B (DeNB). 
     
     
         17 . The method of  claim 11 , wherein the method is performed by a wireless transmit/receive unit (WTRU) configured to operate in a Time-Division Duplexing mode. 
     
     
         18 . (canceled) 
     
     
         19 . The method of  claim 11 , wherein, when transmission directions of one or more subframes of the second subframe partitioning configuration are different from transmission directions of one or more corresponding subframes of the first subframe partitioning configuration, the method is performed by a wireless transmit/receive unit (WTRU) configured to not use the one or more subframes of the second subframe partitioning configuration and to use the one or more subframes of the first subframe partitioning configuration. 
     
     
         20 . The method of  claim 11 , wherein the method is performed by a wireless transmit/receive unit (WTRU) configured to operate in a half-duplex mode. 
     
     
         21 . A node comprising:
 a processor configured to:   send a first subframe partitioning configuration and a second subframe partitioning configuration via a radio resource control (RRC) signal to a wireless transmit/receive unit (WTRU), wherein communications with a first serving cell are performed according to the first subframe partitioning configuration and communications performed with a second serving cell are performed according to the second subframe partitioning configuration, and wherein a transmission direction associated with a first subframe of the first subframe partitioning configuration is a different transmission direction than a transmission direction associated with a corresponding subframe of the second subframe partitioning configuration; and   communicate with the WTRU via the first serving cell and the second serving cell by applying the first subframe partitioning configuration during at least the first subframe based on the first serving cell being a primary serving cell (PCell) and the second serving cell being a secondary serving cell (SCell).   
     
     
         22 . The node of  claim 21 , wherein the node comprises an evolved-Node B (eNB) or a donor evolved-Node B (DeNB). 
     
     
         23 . The node of  claim 21 , wherein the node is configured to operate in a Time-Division Duplexing mode. 
     
     
         24 . The node of  claim 21 , wherein the node is configured to operate in a half-duplex mode. 
     
     
         25 . The node of  claim 21 , wherein the processor is configured to communicate with the WTRU via the first serving cell using the first subframe partitioning configuration unchanged, and communicate with the WTRU via the second serving cell by restricting communicating via the second serving cell to subframes of the second subframe partitioning configuration that have the same transmission direction as corresponding subframes of the first subframe partitioning configuration. 
     
     
         26 . The node of  claim 21 , wherein, when transmission directions of one or more subframes of the second subframe partitioning configuration are different from transmission directions of one or more corresponding subframes of the first subframe partitioning configuration, the node is configured to not use the one or more subframes of the second subframe partitioning configuration and to use the one or more subframes of the first subframe partitioning configuration.