Logical channel management in a wireless communication network
A wireless transmit/receive unit (WTRU) is configured to, on a condition that a serving grant having a non-zero value is too small for transmission of a single protocol data unit (PDU) from any scheduled medium access control-d (MAC-d) flow, transmit scheduling information (SI). The WTRU is further configured to produce a trigger on the condition that the serving grant is too small and the transmission of the SI is based on the produced trigger.
1. A wireless transmit/receive unit (WTRU) comprising:
a transmitter; and
a processor, wherein:
the transmitter and the processor are configured to transmit, on a condition that a serving grant having a non-zero value is too small for transmission of a single protocol data unit (PDU) from any scheduled medium access control-d (MAC-d) flow, scheduling information (SI).
2. The WTRU of claim 1 , wherein the processor is further configured to produce a trigger on the condition that the serving grant is too small and the transmission of the SI is based on the produced trigger.
3. The WTRU of claim 1 , wherein the single PDU is a radio link control (RLC) PDU.
4. The WTRU of claim 1 , further comprising a receiver, wherein the receiver is configured to receive a relative grant and the processor is further configured to determine that the relative grant indicates a decrease in power, wherein the serving grant being too small is based on the received relative grant.
5. The WTRU of claim 4 , wherein the relative grant is a non-serving relative grant.
6. The WTRU of claim 4 , wherein the relative grant received is a serving relative grant and the serving relative grant is erroneously processed by the WTRU.
7. The WTRU of claim 4 , wherein the relative grant is received from a base station.
8. The WTRU of claim 1 , wherein a PDU of a first PDU of scheduled MAC-d flow is a first size and a second PDU of the scheduled MAC-d flow is a second size larger than the first size and the serving grant is too small based on the second size of the second PDU.
9. The WTRU of claim 1 , wherein the processor is further configured to not segment PDUs at a medium access control (MAC) layer.
10. The WTRU of claim 1 , wherein the transmission of the SI is further based on a buffer having data for enhanced dedicated channel (E-DCH) transmission.
11. The WTRU of claim 1 , wherein the SI is transmitted to a base station.
12. A method implemented by a wireless transmit/receive unit (WTRU), the method comprising:
transmitting scheduling information (SI) on a condition that a serving grant having a non-zero value is too small for transmission of a single protocol data unit (PDU) from any scheduled medium access control-d (MAC-d) flow.
13. The method of claim 12 , further comprising: producing a trigger on the condition that the serving grant is too small and the transmission of the SI is based on the produced trigger.
14. The method of claim 12 , wherein the single PDU is a radio link control (RLC) PDU.
15. The method of claim 12 , further comprising: receiving a relative grant; and determining that the relative grant indicates a decrease in power, wherein the serving grant being too small is based on the received relative grant.
16. The method of claim 15 , wherein the relative grant is a non-serving relative grant.
17. The method of claim 15 , wherein the relative grant is a serving relative grant and the serving relative grant is erroneously processed by the WTRU.
18. The method of claim 15 , wherein the relative grant is received from a base station.
19. The method of claim 12 , wherein a PDU of a first PDU of scheduled MAC-d flow is a first size and a second PDU of the scheduled MAC-d flow is a second size larger than the first size and the serving grant is too small based on the second size of the second PDU.
20. The method of claim 12 , wherein the WTRU is configured to not segment PDUs at a MAC layer.
21. The method of claim 12 , wherein the transmission of the SI is further based on a buffer having data for enhanced dedicated channel (E-DCH) transmission.
22. The method of claim 12 , wherein the SI is transmitted to a base station.
23. A wireless transmit/receive unit (WTRU) comprising:
a transmitter; and
a processor, wherein
the transmitter and the processor are configured to:
compare a non-zero serving grant value to a size of a single protocol data unit (PDU) of a scheduled medium access control-d (MAC-d) flow;
based on the comparison, determine whether to transmit scheduling information (SI); and based on the determination being to transmit the SI, transmit the SI.