Logical channel management in a wireless communication network
A wireless transmit/receive unit (WTRU) may receive a higher layer message indicating a triggering condition. The WTRU may process data for a logical channel. Based on the higher layer message and the triggering condition for the logical channel being met, the WTRU may transmit a predetermined sequence over an uplink control channel. The WTRU may receive a scheduling message based on the transmitted predetermined sequence.
1. A wireless transmit/receive unit (WTRU) comprising:
a processor;
a receiver; and
a transmitter;
wherein the receiver is configured to receive a control message, the control message indicating at least one logical channel for a triggering condition;
the processor is configured to process data for a logical channel of the at least one logical channel;
the processor and the transmitter are configured to transmit, based on the control message and the triggering condition for the logical channel being met, a predetermined sequence over an uplink control channel; and
the receiver is configured to receive a scheduling message, based on the transmitted predetermined sequence.
2. The WTRU of claim 1 , wherein the predetermined sequence is periodically transmitted.
3. The WTRU of claim 1 , wherein the processor and the transmitter are further configured to not transmit uplink data in a same time interval as the transmission of the predetermined sequence.
4. The WTRU of claim 1 , wherein the predetermined sequence is transmitted instead of scheduling information (SI) appended to a data payload.
5. The WTRU of claim 1 , wherein the uplink control channel is an enhanced dedicated physical control channel (E-DPCCH).
6. A method performed by a wireless transmit/receive unit (WTRU), the method comprising:
receiving, by the WTRU, a control message, the control message indicating at least one logical channel for a triggering condition;
processing, by the WTRU, data for a logical channel of the at least one logical channel;
transmitting, by the WTRU, based on the control message and the triggering condition for the logical channel being met, a predetermined sequence over an uplink control channel; and
receiving, by the WTRU, a scheduling message, based on the transmitted predetermined sequence.
7. The method of claim 6 , wherein the predetermined sequence is periodically transmitted.
8. The method of claim 6 , wherein uplink data is not transmitted in a same time interval as the transmission of the predetermined sequence.
9. The method of claim 6 , wherein the predetermined sequence is transmitted instead of scheduling information (SI) appended to a data payload.
10. The method of claim 6 , wherein the uplink control channel is an enhanced dedicated physical control channel (E-DPCCH).