US2011199997A1PendingUtilityA1
Method, apparatus and system for determining resource indices
Est. expiryNov 4, 2028(~2.3 yrs left)· nominal 20-yr term from priority
H04L 5/0026H04L 5/0048H04L 1/1607H04L 5/0055H04W 72/23H04L 1/1861H04L 5/0042H04L 5/0094H04W 88/02
48
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Claims
Abstract
The present invention relates to a method, apparatus and system for determining resource indices in a wireless communication system, which explores and implements for at least two control channel elements (CCEs) for a user equipment (UE), maps the CCEs to at least two resource indices for the UE according to a predetermined mapping rule. It can determine multiple resource indices to a UE implicitly according to some embodiments of the present invention.
Claims
exact text as granted — not AI-modified1 . A method for determining a resource index in a wireless communication system, comprising:
for at least two control channel elements (CCEs), for a user equipment (UE), mapping the CCEs to at least two resource indices for the UE according to a predetermined mapping rule.
2 . The method according to claim 1 , further comprising:
establishing the at least two CCEs for the UE.
3 . The method according to claim 1 , wherein the mapping of the CCEs to at least two resource indices for the UE according to a predetermined mapping rule further comprises:
determining at least two resource indices for the UE, wherein each resource index is determined according to
mod(s+m,K)+a
where s is the first CCE index of the UE, m is an offset, where m≧0, K is the number of available resource indices within one resource block (RB), and a is a value between 0 and N−1, where N is the number of CCEs for the UE.
4 . The method according to claim 1 , wherein the mapping of the CCEs to at least two resource indices for the UE according to a predetermined mapping rule further comprises:
determining at least two resource indices for the UE, wherein each resource index is determined according to
{
s
+
m
+
a
if
s
+
m
<
K
re
mod
(
s
+
m
-
K
re
,
K
)
+
a
if
s
+
m
≥
K
re
where s is the first CCE index of the UE, m is an offset, where m≧0, a is a value between 0 and N−1, where N is the number of CCEs for the UE, K re is the number of available resources indices in the first RB, and K is the number of available resources indices within a second RB.
5 . The method according to claim 1 , wherein the mapping of the CCEs to at least two resource indices for the UE according to a predetermined mapping rule further comprises:
determining at least two resource indices for the UE, wherein each resource index is determined according to
s
+
m
-
∑
m
=
0
n
-
1
K
m
+
a
,
where
∑
m
=
0
n
-
1
K
m
<
s
+
m
≤
∑
m
=
0
n
K
m
where s is the first CCE index of the UE, m is an offset, where m≧0, and K m is the number of available resource indices in the RB m , where m=0, 1, . . . M−1, where M is the number of available RBs for resource indices, a is a value between 0 and N−1, where N is the number of CCEs for the UE, and n is the RB index for the UE.
6 . The method according to claim 1 , wherein the method further comprises:
removing at least one of the determined resource indices for the UE when the at least one of the determined resource indices for the UE exceeds the number of available resource indices in one RB.
7 . The method according to claim 1 , wherein the method further comprises:
rearranging the position of the CCEs that will be received by the UE to make sure that the resource indices for the UE are in one RB when at least one of the resource indices exceeds the number of available resource indices in one RB.
8 . The method according to claim 1 , wherein the resource indices are demodulation reference signals, DRS, indices or ACK/NACK indices.
9 . The method according to claim 8 , wherein the UE has multiple logical antennas, the method further comprises:
allocating, by the UE, one determined DRS index for each logical antenna.
10 . The method according to claim 9 , wherein the method further comprises:
allocating at least two determined ACK/NACK indices for one logical antenna.
11 . The method according to claim 9 , wherein the method further comprises:
allocating at least one determined ACK/NACK index for one logical antenna.
12 . An apparatus for determining a resource index in a wireless communication system, comprising:
a mapping unit, configured to map at least two control channel elements (CCEs) for a user equipment (UE) to at least two resource indices for the UE according to a predetermined mapping rule.
13 . The apparatus according to claim 12 , wherein the apparatus further comprises:
an establishing unit, configured to establishing the at least two CCEs for the UE.
14 . The apparatus according to claim 12 , wherein the resource indices are demodulation reference signals, DRS, indices or ACK/NACK indices.
15 . The apparatus according to claim 14 , wherein if the UE has multiple logical antennas, the apparatus further comprises:
a first allocating unit, configured to allocate one determined DRS index for each logical antenna.
16 . The apparatus according to claim 15 , wherein the apparatus further comprises:
a second allocating unit, configured to allocate at least two determined ACK/NACK indices for one logical antenna.
17 . The apparatus according to claim 15 , wherein the apparatus further comprises:
a third allocating unit, configured to allocate at least one determined ACK/NACK index for one logical antenna.
18 . A system for determining a resource index in a wireless communication system, comprising:
a base station, configured to communicate to a user equipment (UE), allocate at least two control channel elements (CCEs) to the UE, and map the CCEs to at least two resource indices for the UE according to a predetermined mapping rule, and send the CCEs to the UE; wherein the UE is configured to receive the CCEs from the base station, and map the CCEs to at least two resource indices for the UE according to the predetermined mapping rule.
19 . A computer readable medium carrying computer program code, which, when executed, enables a computer to perform the steps of a method according to claim 1 .
20 . At least one processor configured to perform a method to claim 1 .Join the waitlist — get patent alerts
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