Methods for logical channel prioritization and traffic shaping in wireless systems
A method performed by a WTRU may comprise associating a logical channel with a plurality of token buckets, including at least a long term token bucket and a short term token bucket. The method may further comprise transmitting logical channel data on the associated logical channel, in a TTI. The transmitted logical channel data of the TTI may be no larger than a value corresponding to a minimum of the long term token bucket and the short term token bucket. The long term token bucket may be initialized to a value which is greater than an initialized value of the short term token bucket. When the WTRU transmits logical channel data in a TTI, the WTRU may decrement the long term token bucket and the short term token bucket by a total size of one or more MAC SDUs served on the associated logical channel.
1. A method performed by a wireless transmit/receive unit (WTRU), the method comprising:
receiving a radio resource control (RRC) configuration message indicating that a logical channel (LCH) is associated with a first bucket and a second bucket;
incrementing an amount of data in the first bucket at a rate corresponding to a first prioritized bit rate (PBR) when the first bucket is not full and incrementing an amount of data in the second bucket at a rate corresponding to a second PBR when the second bucket is not full;
receiving an uplink (UL) grant for a transmission in a first transmission time interval (TTI);
transmitting data on the LCH in the first TTI, using the UL grant, the amount of data transmitted on the LCH in the first TTI being no larger than the minimum of a value corresponding to the first bucket and a value corresponding to the second bucket; and
decrementing the amount of data in the first bucket and the amount of data in the second bucket, by the amount of data transmitted on the LCH in the first TTI.
2. The method of claim 1 , wherein the first PBR is different than the second PBR.
3. The method of claim 1 , wherein the first bucket has a different bucket update period than the second bucket.
4. The method of claim 1 , wherein the first bucket has a different accumulation rate than the second bucket.
5. The WTRU of claim 1 , wherein the first bucket and the second bucket are used in a logical channel prioritization (LCP) procedure.
6. The method of claim 1 , wherein the UL grant is received from a base station.
7. The method of claim 1 , wherein the decrementing is in accordance with a total number of media access control service data units (MAC SDUs) transmitted on the LCH.
8. A wireless transmit/receive unit (WTRU) comprising:
a transceiver; and
a processor;
the transceiver and processor configured to:
receive a radio resource control (RRC) configuration message indicating that a logical channel (LCH) is associated with a first bucket and a second bucket;
increment the amount of data in the first bucket at a rate corresponding to a first prioritized bit rate (PBR) and increment the amount of data in the second bucket at a rate corresponding to a second PBR;
a receiver configured to:
receive an uplink (UL) grant for a transmission in a first transmission time interval (TTI); and
transmit data on the LCH in the first TTI, using the UL grant, the amount of data transmitted on the LCH in the first TTI being no larger than the minimum of a value corresponding to the first bucket and a value corresponding to the second bucket; and
decrement the amount of data in the first bucket and the amount of data in the second bucket, by the amount of data transmitted on the LCH in the first TTI.
9. The WTRU of claim 8 , wherein the first PBR is different than the second PBR.
10. The WTRU of claim 8 , wherein the first bucket has a different bucket update period than the second bucket.
11. The WTRU of claim 8 , wherein the first bucket has a different accumulation rate than the second bucket.
12. The WTRU of claim 8 , wherein the data is device to device (D2D) data and transmitted to another WTRU.
13. The WTRU of claim 8 , wherein the UL grant is received from a base station.
14. The WTRU of claim 8 , wherein the amount of data is in accordance with a total number of media access control service data units (MAC SDUs) transmitted on the LCH.
15. A wireless transmit/receive unit (WTRU) comprising:
a receiver configured to:
receive an uplink (UL) grant for a transmission in a first transmission time interval (TTI); and
receive a radio resource control (RRC) configuration message indicating that a logical channel (LCH) is associated with a first bucket and a second bucket
a transmitter configured to transmit data on the LCH in the first TTI, using the UL grant, associated with the first bucket and the second bucket, the amount of data transmitted on the LCH in the first TTI being no larger than the minimum of a value corresponding to the first bucket and a value corresponding to the second bucket; and
circuitry configured to decrement the first bucket and the second bucket, by an amount of data transmitted on the LCH in the first TTI.
16. The WTRU of claim 15 , further comprising:
circuitry configured to increment the first bucket at a rate corresponding to a first prioritized bit rate (PBR) and increment the second bucket at a rate corresponding to a second PBR, wherein the first PBR and second PBR are different.
17. The WTRU of claim 15 , wherein the first bucket has a different bucket update period than the second bucket.
18. The WTRU of claim 15 , wherein the first bucket has a different accumulation rate than the second bucket.