Wireless communication method of selecting an enhanced uplink transport format combination
View Patent ↗Methods of selecting an enhanced uplink (EU) transport format combination (E-TFC) are disclosed. A maximum number of bits of scheduled data for an upcoming transmission may be determined, wherein the highest value is lower or equal to: K e , ref · S G L e , ref · A ed , ref 2 · 10 Δ harq / 10 , where SG is a serving grant, L e,ref is the number of EU dedicated physical data channels (E-DPDCHs) used for a selected reference E-TFC, K e,ref is the number of data bits of the reference E-TFC, Δ harq is a hybrid automatic repeat request (HARQ) offset for a specific data flow to be transmitted as signaled by higher layers, and A ed,ref is a ratio derived from a parameter ΔE-DPDCH signaled by higher layers for the selected reference E-TFC.
1. A method of selecting an enhanced uplink (EU) transport format combination (E-TFC), the method comprising:
determining a maximum number of bits of scheduled data for an upcoming transmission calculated from K e,ref , wherein the highest value is lower or equal to:
K
e
,
ref
·
SG
L
e
,
ref
·
A
ed
,
ref
2
·
10
Δ
harq
/
10
,
where SG is a serving grant, L e,ref is the number of EU dedicated physical data channels (E-DPDCHs) used for a selected reference E-TFC, K e,ref is the number of data bits of the reference E-TFC, Δ harq is a hybrid automatic repeat request (HARQ) offset for a specific data flow to be transmitted as signaled by higher layers, and Δ ed,ref is a ratio derived from a parameter ΔE-DPDCH signaled by higher layers for the selected reference E-TFC.
2. The method of claim 1 , wherein a power offset (PO) for the upcoming transmission is the PO from a HARQ profile of a medium access control (MAC-d) flow that allows highest-priority data to be transmitted.
3. The method of claim 2 , wherein on a condition that more than one MAC-d flow allows data of the same highest priority to be transmitted, the selection of the MAC-d flow is performed randomly.
4. The method of claim 1 , wherein SG=MIN(SGP, TBsize), where SGP is the maximum number of bits of scheduled data for an upcoming transmission and TBsize is a transport block size that provides a maximum supported payload.
5. The method of claim 1 , further comprising:
performing E-TFC restriction; and
determining a maximum supported payload that can be sent in a next transmission timing interval (TTI).
6. A wireless transmit/receive unit (WTRU) configured to select an enhanced uplink (EU) transport format combination (E-TFC), the WTRU configured to:
determine a maximum number of bits of scheduled data for an upcoming transmission calculated from K e,ref , wherein the highest value is lower or equal to:
K
e
,
ref
·
SG
L
e
,
ref
·
A
ed
,
ref
2
·
10
Δ
harq
/
10
,
where SG is a serving grant, L e,ref is the number of EU dedicated physical data channels (E-DPDCHs) used for a selected reference E-TFC, K e,ref is the number of data bits of the reference E-TFC, Δ harq is a hybrid automatic repeat request (HARQ) offset for a specific data flow to be transmitted as signaled by higher layers, and A ed,ref is a ratio derived from a parameter ΔE-DPDCH signaled by higher layers for the selected reference E-TFC.
7. The WTRU of claim 6 , wherein the WTRU is further configured to:
select a power offset (PO) for the upcoming transmission as the PO from a HARQ profile of a medium access control (MAC-d) flow that allows highest-priority data to be transmitted.
8. The WTRU of claim 7 , wherein on a condition that more than one MAC-d flow allows data of the same highest priority to be transmitted, the WTRU is further configured to select the MAC-d flow randomly.
9. The WTRU of claim 6 , wherein SG=MIN(SGP, TBsize), where SGP is the maximum number of bits of scheduled data for an upcoming transmission and TBsize is a transport block size that provides a maximum supported payload.
10. The WTRU of claim 6 , wherein the WTRU is further configured to:
perform E-TFC restriction; and
determine a maximum supported payload that can be sent in a next transmission timing interval (TTI).
11. A method of selecting an enhanced uplink (EU) transport format combination (E-TFC), the method comprising:
determining a maximum number of bits of scheduled data for an upcoming transmission, wherein the highest value is lower or equal to a product of:
a ratio of the serving grant (SG) over the number of EU dedicated physical data channels (E-DPDCHs) used for a selected reference E-TFC, a hybrid automatic repeat request (HARQ) offset for a specific data flow to be transmitted as signaled by higher layers, and a ratio derived from a parameter ΔE-DPDCH signaled by higher layers for the selected reference E-TFC; and
the number of data bits of the reference E-TFC.
12. The method of claim 11 , wherein a power offset (PO) for the upcoming transmission is the PO from a HARQ profile of a medium access control (MAC-d) flow that allows highest-priority data to be transmitted.
13. The method of claim 12 , wherein on a condition that more than one MAC-d flow allows data of the same highest priority to be transmitted, the selection of the MAC-d flow is performed randomly.
14. The method of claim 11 , wherein SG=MIN(SGP, TBsize), where SGP is the maximum number of bits of scheduled data for an upcoming transmission and TBsize is a transport block size that provides a maximum supported payload.
15. The method of claim 11 , further comprising:
performing E-TFC restriction; and
determining a maximum supported payload that can be sent in a next transmission timing interval (TTI).