Dynamic hybrid automatic repeat request-acknowledgement (HARQ-ACK) transmission with enhanced physical downlink control channels
Embodiments of a system and method for providing dynamic hybrid automatic repeat request-acknowledgement (HARQ-ACK) transmission with enhanced physical downlink control channels are generally described herein. In some embodiments, a receiver is arranged to receive, on an enhanced physical downlink control channel (ePDCCH), one of a lowest control channel element index (n CCE ) and a lowest enhanced control channel element index (n eCCE ), a user equipment specific starting offset (N PUCCH (1) ) and at least one additional offset-related parameter. A processor determines allocation of an uplink resource of a physical uplink control channel (PUCCH) for HARQ-ACK transmission based the one of a lowest control channel element index (n CCE ) and a lowest enhanced control channel element index (n eCCE ), the user equipment specific starting offset (N PUCCH (1) ) and at least one selected from the at least one additional offset-related parameter. A transmitter transmits a signal on the PUCCH using the allocated uplink resource.
1. A user equipment comprising:
a receiver arranged to receive, on an enhanced physical downlink control channel (ePDCCH), a lowest control channel element index (n CCE ) and a lowest enhanced control channel element index (n eCCE ), a user equipment specific starting offset (N PUCCH (1) ) and at least one additional offset-related parameter;
a processor arranged to determine allocation of an uplink resource of a physical uplink control channel (PUCCH) for Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) transmission based on one of the lowest control channel element index (n CCE ) and the lowest enhanced control channel element index (n eCCE ), the user equipment specific starting offset (N PUCCH (1) ) and the at least one additional offset-related parameter; and
a transmitter arranged to transmit a signal on the PUCCH using the allocated uplink resource, and the processor is further arranged to at least one of:
determine a hybrid allocation of an uplink resource of a PUCCH for HARQ-ACK transmission using a backward compatible carrier (n PUCCH (1) ) is given by ƒ(n eCCE,m )+an acknowledgement/non-acknowledgement (ACK/NACK) resource indicator (ARI)+an antenna port offset (AP)+N PUCCH,m (1) , and
determine an AP-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission for a new carrier type (NCT) is given by ƒ(n eCCE,m )+AP+N PUCCH,m (1) .
2. The user equipment of claim 1 , wherein the at least one additional offset-related parameter comprises at least one selected from an ACK/NACK resource offset (ARO) value, the AP, a maximum number of eCCE indices among all ePDCCH sets to a user equipment in a specified subframe (N m ), an offset informed to the user equipment by higher layer signaling to avoid collision with the user equipment in coordinating cells (N PUCCH,CoMP (1) ), and a value associated with one or more of a specific subframe, a signaled value, a physical downlink shared channel, and a semi-persistent scheduling (SPS).
3. The user equipment of claim 1 , wherein the receiver further receives a user equipment specific starting offset for a detected ePDCCH set configured by radio resource control (RRC) signaling (N PUCCH,m (1) ).
4. The user equipment of claim 1 , wherein the processor is further arranged to determine an ARI-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission using a backward compatible carrier (n PUCCH (1) ) is given by ƒ(n eCCE )+ARI+N PUCCH,m (1) , wherein ƒ(n eCCE ) is a function of the lowest enhanced control channel element index (n eCCE ).
5. The user equipment of claim 1 , wherein the processor is further arranged to determine a hybrid allocation of an uplink resource of a PUCCH for HARQ-ACK transmission using a backward compatible carrier (n PUCCH (1) ) is given by ƒ(n eCCE,m )+AP+N PUCCH,m (1) .
6. The user equipment of claim 1 , wherein the processor is further arranged to determine an AP-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission for a new carrier type (NCT) is given by ƒ(n eCCE,m )+AP+N PUCCH,m (1) .
7. The user equipment of claim 1 , wherein the processor is further arranged to use only one of an enhanced physical downlink control channel and a legacy physical downlink control channel for downlink subframes.
8. A user equipment comprising:
a receiver arranged to receive, on an enhanced physical downlink control channel (ePDCCH), a lowest control channel element index (n CCE ) and a lowest enhanced control channel element index (n eCCE ), a user equipment specific starting offset (N PUCCH (1) ) and at least one additional offset-related parameter;
a processor arranged to determine allocation of an uplink resource of a physical uplink control channel (PUCCH) for Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) transmission based on one of the lowest control channel element index (n CCE ) and the lowest enhanced control channel element index (n eCCE ), the user equipment specific starting offset (N PUCCH (1) ) and the at least one additional offset-related parameter; and
a transmitter arranged to transmit a signal on the PUCCH using the allocated uplink resource, wherein the processor is further arranged to:
determine an antenna port offset (AP)-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission for a new carrier type (NCT) is given by one of ƒ(n eCCE )+2·AP or ƒ(n eCCE,m )+AP+N PUCCH,m (1) , wherein ƒ(n eCCE,m ) is a function of the lowest eCCE index for the detected ePDCCH to the user equipment at ePDCCH set m, wherein m=0, 1, . . . , M−1 and M is the number of ePDCCH sets to the user equipment.
9. A user equipment comprising:
a receiver arranged to receive, on an enhanced physical downlink control channel (ePDCCH), a lowest control channel element index (n CCE ) and a lowest enhanced control channel element index (n eCCE ), a user equipment specific starting offset (N PUCCH (1) ) and at least one additional offset-related parameter;
a processor arranged to determine allocation of an uplink resource of a physical uplink control channel (PUCCH) for Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) transmission based on one of the lowest control channel element index (n CCE ) and the lowest enhanced control channel element index (n eCCE ), the user equipment specific starting offset (N PUCCH (1) ) and the at least one additional offset-related parameter; and
a transmitter arranged to transmit a signal on the PUCCH using the allocated uplink resource, wherein the processor is further arranged to:
determine allocation of an uplink resource of the PUCCH for HARQ-ACK bundling for resource allocation for subframe n for an ePDCCH transmission is given by:
n
PUCCH
(
1
,
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1
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=
n
eCCE
,
q
+
1
+
∑
i
l
=
0
m
-
1
N
eCCE
,
q
,
n
-
k
n
+
Δ
ARO
+
N
PUCCH
,
q
(
e
1
)
if ePDCCH-PRB-set q is configured for distributed transmission, and an equation including the terms:
⌊
n
eCCE
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q
N
RB
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q
⌋
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∑
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=
0
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N
eCCE
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-
k
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l
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n
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,
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ARO
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and
N
PUCCH
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q
(
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if ePDCCH-PRB-set q is configured for localized transmission.
10. A user equipment comprising:
a receiver arranged to receive, on an enhanced physical downlink control channel (ePDCCH), a lowest control channel element index (n CCE ) and a lowest enhanced control channel element index (n eCCE ), a user equipment specific starting offset (N PUCCH (1) ) and at least one additional offset-related parameter;
a processor arranged to determine allocation of an uplink resource of a physical uplink control channel (PUCCH) for Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) transmission based on one of the lowest control channel element index (n CCE ) and the lowest enhanced control channel element index (n eCCE ), the user equipment specific starting offset (N PUCCH (1) ) and the at least one additional offset-related parameter; and
a transmitter arranged to transmit a signal on the PUCCH using the allocated uplink resource, wherein the processor is further arranged to:
determine an acknowledgement/non-acknowledgement (ACK/NACK) resource indicator (ARI)-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission given by value+n eCCE,s +ARI+N PUCCH,s (1) , wherein the value is associated with one or more of a specific subframe, a signaled value, a physical downlink shared channel, and a semi-persistent scheduling (SPS);
determine, for an ePDCCH used in a subframe and configured for PUCCH format 3, an allocation of an uplink resource of a PUCCH for HARQ-ACK transmission based on the ARI offset value;
determine, for an ePDCCH used in a subframe and configured for PUCCH format 3, an allocation of an uplink resource of a PUCCH for HARQ-ACK transmission using transmit power controls (TPCs), other than in a subframe having downlink assignment index (DAI) equal to one on a primary cell, to indicate a used PUCCH format 3 resource among four configured resources;
determine, for an ePDCCH used in a subframe and configured for one of a PUCCH format 3 and PUCCH format 1b with channel selection for the user equipment configured for carrier aggregation, an allocation of an uplink resource of a PUCCH for HARQ-ACK transmission that includes the ARI offset value for an ePDCCH transmitted on a primary cell; and
determine the allocation of the uplink resource of the PUCCH for HARQ-ACK transmission using a user equipment specific starting offset for ePDCCH set s configured by RRC signaling for a downlink (DL) subframe for ePDCCH and using a cell specific starting offset for ePDCCH set s configured by RRC signaling for DL subframes associated with legacy PDCCH.
11. A user equipment comprising:
a receiver arranged to receive, on an enhanced physical downlink control channel (ePDCCH), a lowest control channel element index (n CCE ) and a lowest enhanced control channel element index (n eCCE ), a user equipment specific starting offset (N PUCCH (1) ) and at least one additional offset-related parameter;
a processor arranged to determine allocation of an uplink resource of a physical uplink control channel (PUCCH) for Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) transmission based on one of the lowest control channel element index (n CCE ) and the lowest enhanced control channel element index (n eCCE ), the user equipment specific starting offset (N PUCCH (1) ) and the at least one additional offset-related parameter; and
a transmitter arranged to transmit a signal on the PUCCH using the allocated uplink resource, wherein the processor is further arranged to:
transmit a HARQ-ACK PUCCH resource value on each PDCCH assignment in a primary cell and in each secondary cell to determine the PUCCH resource value within a subframe and to receive a single physical downlink shared channel (PDSCH) on a primary cell with the PDCCH having a DAI equal to one, the processor using PUCCH format 1a/1b with dynamic resource allocation for allocation of an uplink resource of the PUCCH for HARQ-ACK transmission.
12. A method for providing dynamic Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) transmission with enhanced physical downlink control channel resource allocation, comprising:
receiving, on an enhanced physical downlink control channel (ePDCCH), a lowest control channel element index (n CCE ) and a lowest enhanced control channel element index (n eCCE );
receiving, on the ePDCCH, a user equipment specific starting offset (N PUCCH (1) );
receiving, on the ePDCCH, at least one value selected from an acknowledgement/non-acknowledgement (ACK/NACK) resource offset (ARO) value, an antenna port offset (AP), a maximum number of eCCE indices among all ePDCCH sets to a user equipment in a specified subframe (N m ), an offset informed to the user equipment by higher layer signaling to avoid collision with the user equipment in coordinating cells (N PUCCH,CoMP (1) ), and a value associated with one or more of a specific subframe, a signaled value, a physical downlink shared channel, and a semi-persistent scheduling (SPS); and
determining allocation of an uplink resource of a physical uplink control channel (PUCCH) for HARQ-ACK transmission based on one of the lowest control channel element index (n CCE ) and the lowest enhanced control channel element index (n eCCE ), the user equipment specific starting offset (N PUCCH (1) ), and the at least one value, and at least one of:
the determining allocation of an uplink resource of the PUCCH for HARQ-ACK transmission comprises determining an antenna port offset (AP)-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission for a new carrier type (NCT) is given by one of ƒ(n eCCE )+2·AP or ƒ(n eCCE,m )+AP+N PUCCH,m (1) , wherein ƒ(n eCCE,m ) is a function of the lowest eCCE index for the detected ePDCCH to the user equipment at ePDCCH set m, wherein m=0, 1, . . . , M−1 and M is the number of ePDCCH sets to the user equipment, and
the method further comprises receiving a single physical downlink shared channel (PDSCH) on a primary cell with the PDCCH having a DAI equal to one and using PUCCH format 1a/1b with dynamic resource allocation for allocation of an uplink resource of the PUCCH for HARQ-ACK transmission.
13. The method of claim 12 , wherein the receiving a user equipment specific starting offset (N PUCCH (1) ) further comprises receiving a user equipment specific starting offset for a detected ePDCCH set configured by RRC signaling (N PUCCH,m (1) ).
14. The method of claim 12 , wherein the determining allocation of an uplink resource of the PUCCH for HARQ-ACK transmission comprises determining an ACK/NACK resource indicator (ARI)-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission using a backward compatible carrier (n PUCCH (1) ) is given by ƒ(n eCCE )+ARI+N PUCCH,m (1) , wherein ƒ(n eCCE ) is a function of the lowest enhanced control channel element index (n eCCE ).
15. The method of claim 12 , wherein the determining allocation of an uplink resource of the PUCCH for HARQ-ACK transmission comprises determining an AP-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission for a new carrier type (NCT) is given by one of ƒ(n eCCE )+2·AP or ƒ(n eCCE,m )+AP+N PUCCH,m (1) , wherein ƒ(n eCCE,m ) is a function of the lowest eCCE index for the detected ePDCCH to the user equipment at ePDCCH set m, wherein m=0, 1, . . . , M−1 and M is the number of ePDCCH sets to the user equipment.
16. The method of claim 12 , wherein the determining allocation of an uplink resource of the PUCCH for HARQ-ACK transmission comprises one selected from a group consisting of:
determining a hybrid allocation of an uplink resource of a PUCCH for HARQ-ACK transmission using a backward compatible carrier (n PUCCH (1) ) is given by ƒ(n eCCE,m )+ACK/NACK resource indicator (ARI)+AP+N PUCCH,m (1) ,
determining an AP-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission for a new carrier type (NCT) is given by ƒ(n eCCE,m )+AP+N PUCCH,m (1) ,
determining an ARI-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission given by a value+n eCCE,s +ARI+N PUCCH,s (1) , wherein the value is associated with one or more of a specific subframe, a signaled value, a physical downlink shared channel, and a semi-persistent scheduling (SPS), and
determining allocation of an uplink resource of the PUCCH for HARQ-ACK bundling for resource allocation for subframe n for an enhanced PDCCH transmission according to:
n
PUCCH
(
1
,
p
~
1
)
=
n
eCCE
,
q
+
∑
i
l
=
0
m
-
1
N
eCCE
,
q
,
n
-
k
n
+
Δ
ARO
+
N
PUCCH
,
q
(
e
1
)
if ePDCCH-PRB-set q is configured for distributed transmission, and an equation including the terms:
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n
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q
N
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,
and
N
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q
(
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If ePDCCH-PRB-set q is configured for localized transmission.
17. The method of claim 12 , wherein the determining allocation of an uplink resource of the PUCCH for HARQ-ACK transmission comprises one selected from:
determining, for an enhanced PDCCH used in a subframe and configured for PUCCH format 3, an allocation of an uplink resource of a PUCCH for HARQ-ACK transmission based on an ACK/NACK resource indicator (ARI) offset value;
determining, for an enhanced PDCCH used in a subframe and configured for PUCCH format 3, an allocation of an uplink resource of a PUCCH for HARQ-ACK transmission using transmit power controls (TPCs), other than in a subframe having downlink assignment index (DAI) equal to one on a primary cell, to indicate a used PUCCH format 3 resource among four configured resources;
determining, for an enhanced PDCCH used in a subframe and configured for one of a PUCCH format 3 and PUCCH format 1b with channel selection for the user equipment configured for carrier aggregation, an allocation of an uplink resource of a PUCCH for HARQ-ACK transmission that includes the ARI offset value for an ePDCCH transmitted on a primary cell; and
determining the allocation of the uplink resource of the PUCCH for HARQ-ACK transmission using a user equipment specific starting offset for ePDCCH set s configured by RRC signaling for a downlink (DL) subframe for ePDCCH and using a cell specific starting offset for ePDCCH set s configured by RRC signaling for DL subframes associated with legacy PDCCH.
18. The method of claim 12 further comprising receiving a single physical downlink shared channel (PDSCH) on a primary cell with the PDCCH having a DAI equal to one and using PUCCH format 1a/1b with dynamic resource allocation for allocation of an uplink resource of the PUCCH for HARQ-ACK transmission.
19. The method of claim 12 further comprises using only one of an enhanced physical downlink control channel and a legacy physical downlink control channel for downlink subframes.
20. At least one non-transitory machine readable medium comprising instructions that, when executed by the machine, cause the machine to perform operations for providing dynamic Hybrid Automatic Repeat reQuest-ACKnowledgement (HARQ-ACK) transmission with enhanced physical downlink control channel resource allocation, the operations comprising:
receiving, on an enhanced physical downlink control channel (ePDCCH), a lowest control channel element index (n CCE ) and a lowest enhanced control channel element index (n eCCE );
receiving, on the ePUCCH, a user equipment specific starting offset (N PUCCH (1) );
receiving, on the ePUCCH, at least one value selected from an acknowledgement/non-acknowledgement (ACK/NACK) resource offset (ARO) value, an antenna port offset (AP), a maximum number of eCCE indices among all ePDCCH sets to a user equipment in a specified subframe (N m ), an offset informed to the user equipment by higher layer signaling to avoid collision with the user equipment in coordinating cells (N PUCCH,CoMP (1) ), and a value associated with one or more of a specific subframe, a signaled value, a physical downlink shared channel, and a semi-persistent scheduling (SPS); and
determining allocation of an uplink resource of a physical uplink control channel (PUCCH) for HARQ-ACK transmission based on one of a lowest control channel element index (n CCE ) and the lowest enhanced control channel element index (n eCCE ), and the user equipment specific starting offset (N PUCCH (1) ), and the at least one value, and
the determining allocation of an uplink resource of the PUCCH for HARQ-ACK transmission comprises determining an antenna port offset (AP)-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission for a new carrier type (NCT) is given by one of ƒ(n eCCE )+2·AP or ƒ(n eCCE,m )+AP+N PUCCH,m (1) , wherein ƒ(n eCCE,m ) is a function of the lowest eCCE index for the detected ePDCCH to the user equipment at ePDCCH set m, wherein m=0, 1, . . . , M−1 and M is the number of ePDCCH sets to the user equipment.
21. The at least one non-transitory machine readable medium of claim 20 , wherein the receiving a user equipment specific starting offset (N PUCCH (1) ) further comprises receiving a user equipment specific starting offset for a detected ePDCCH set configured by RRC signaling (N PUCCH,m (1) ).
22. The at least one non-transitory machine readable medium of claim 20 , wherein the determining allocation of an uplink resource of the PUCCH for HARQ-ACK transmission comprises determining an ACK/NACK resource indicator (ARI)-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission using a backward compatible carrier (n PUCCH (1) ) is given by ƒ(n eCCE )+ARI+N PUCCH,m (1) , wherein ƒ(n eCCE ) is a function of the lowest enhanced control channel element index (n eCCE ).
23. The at least one non-transitory machine readable medium of claim 20 , wherein the determining allocation of an uplink resource of the PUCCH for HARQ-ACK transmission comprises determining an AP-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission for a new carrier type (NCT) is given by one of ƒ(n eCCE )+2·AP or ƒ(n eCCE,m )+AP+N PUCCH,m (1) , wherein ƒ(n eCCE,m ) is a function of the lowest eCCE index for the detected ePDCCH to the user equipment at ePDCCH set m, wherein m=0, 1, . . . , M−1 and M is the number of ePDCCH sets to the user equipment.
24. The at least one non-transitory machine readable medium of claim 20 , wherein the determining allocation of an uplink resource of the PUCCH for HARQ-ACK transmission comprises one selected from a group consist ing of:
determining a hybrid allocation of an uplink resource of a PUCCH for HARQ-ACK transmission using a backward compatible carrier (n (1) PUCCH ) is given by f(n eCCE,m )+ACK/NACK resource indicator (ARI)+AP+N (1) PUCCH,m ,
determining an ARI-based allocation of an uplink resource of a PUCCH for HARQ-ACK transmission given by a value n eCCE,s +ARI+N (1) PUCCH,s , wherein the value is associated with one or more of a specific subframe, a signaled value, a physical downlink shared channel, and a semi-persistent scheduling (SPS), and
determining allocation of an uplink resource of the PUCCH for HARQ-ACK bundling for resource allocation for subframe n for an ePDCCH transmission according to:
n
PUCCH
(
1
,
p
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1
)
=
n
eCCE
,
q
+
1
+
∑
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=
0
m
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1
N
eCCE
,
q
,
n
-
k
n
+
Δ
ARO
+
N
PUCCH
,
q
(
e
1
)
if ePDCCH-PRB-set q is configured for distributed transmission, and an equation including the terms:
⌊
n
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,
q
N
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,
q
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∑
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=
0
m
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1
N
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q
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n
-
k
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,
n
′
,
Δ
ARO
,
and
N
PUCCH
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q
(
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1
)
if ePDCCH-PRB-set q is configured for localized transmission.
25. The at least one non-transitory machine readable medium of claim 20 , wherein the determining allocation of an uplink resource of the PUCCH for HARQ-ACK transmission comprises one selected from:
determining, for an ePDCCH used in a subframe and configured for PUCCH format 3, an allocation of an uplink resource of a PUCCH for HARQ-ACK transmission based on an ACK/NACK resource indicator (ARI) offset value;
determining, for an ePDCCH used in a subframe and configured for PUCCH format 3, an allocation of an uplink resource of a PUCCH for HARQ-ACK transmission using transmit power controls (TPCs), other than in a subframe having downlink assignment index (DAI) equal to one on a primary cell, to indicate a used PUCCH format 3 resource among four configured resources;
determining, for an ePDCCH used in a subframe and configured for one of a PUCCH format 3 and PUCCH format 1b with channel selection for the user equipment configured for carrier aggregation, an allocation of an uplink resource of a PUCCH for HARQ-ACK transmission that includes the ARI offset value for an ePDCCH transmitted on a primary cell; and
determining the allocation of the uplink resource of the PUCCH for HARQ-ACK transmission using a user equipment specific starting offset for ePDCCH set s configured by RRC signaling for a downlink (DL) subframe for ePDCCH and using a cell specific starting offset for ePDCCH set s configured by RRC signaling for DL subframes associated with legacy PDCCH.