Method and apparatus for transmitting data over a downlink channel of at least one of a plurality of cells
A method and base station are disclosed. The base station comprises a wireless transceiver and a processor. The base station performs wireless communications with a wireless transmit/receive unit (WTRU) via a primary cell, transmits a message via a shared channel of the primary cell, wherein the message includes information identifying a plurality of non-primary cells, and transmits, to the WTRU, data over a downlink channel of at least one of the plurality of non-primary cells identified by the message.
1. A base station comprising:
a wireless transceiver; and
a processor,
wherein the wireless transceiver and the processor cause the base station to:
transmit, to a wireless transmit/receive unit (WTRU), wireless communications via a primary cell associated with the base station, wherein the base station controls the primary cell and at least one non-primary cell;
transmit, to the WTRU, a message via a shared channel of the primary cell, wherein the message includes information identifying at least one non-primary cell associated with the base station for the WTRU to monitor; and
transmit, to the WTRU, data over a downlink channel of at least one of the at least one non-primary cell identified by the message and being monitored by the WTRU.
2. The base station of claim 1 , wherein the message is transmitted over a shared downlink channel via the primary cell, and wherein the information identifying the at least one non-primary cell is control information.
3. The base station of claim 2 , wherein the shared downlink channel is one of a plurality of shared downlink channels of the primary cell.
4. The base station of claim 1 , wherein the message further includes information identifying a plurality of shared downlink data channels of the at least one non-primary cell.
5. A method of operating a base station, the method comprising:
transmitting, to a wireless transmit/receive unit (WTRU), wireless communications via a primary cell associated with the base station, wherein the base station controls the primary cell and at least one non-primary cell;
transmitting, to the WTRU, a message via a shared channel of the primary cell to the WTRU, wherein the message includes information identifying at least one non-primary cell associated with the base station for the WTRU to monitor; and
transmitting, to the WTRU, data over a downlink channel of at least one of the at least one non-primary cell identified by the message and being monitored by the WTRU.
6. The method of claim 5 , wherein the message is transmitted over a shared downlink channel via the primary cell, and wherein the information identifying the at least one non-primary cell is control information.
7. The method of claim 6 , wherein the shared downlink channel is one of a plurality of shared downlink channels of the primary cell.
8. The method of claim 5 , wherein the message further includes information identifying a plurality of shared downlink data channels of the at least one non-primary cell.