Method and apparatus for mapping and detecting control channel
A method and apparatus for mapping and detecting control channel are provided. The method for mapping a control channel includes: for the same aggregation level, according to a signaling length of a control channel corresponding to a component carrier, determining a corresponding search space for at least two control channels that have the same signaling length, so as to enable the at least two control channels that have the same signaling length to use the same search space, and mapping the at least two control channels that have the same signaling length to the determined corresponding search space. Therefore, conflicts between the control channels are reduced, and the number of times of blind detection of the control channels is also reduced.
1. A method for mapping a control channel, comprising:
determining, by a network equipment, for the same aggregation level, at least two control channels having an identical signaling length and at least two control channels having different signaling lengths;
determining, by the network equipment, a first search space corresponding to the at least two control channels having the identical signaling length;
determining, by the network equipment, in at least one time transmission unit for the same aggregation level, a second search space corresponding to the at least two control channels having signaling lengths different from that of the control channels having the identical signaling length; and
mapping, by the network equipment, the at least two control channels having the identical signaling length to the first search space, and the at least two control channels having different signaling lengths to the second search space.
2. The method according to claim 1 , wherein the at least two control channels having the identical signaling length correspond to different component carriers.
3. The method according to claim 1 , wherein determining the first search space comprises:
determining the first search space according to initial search spaces of the at least two control channels having identical signaling length.
4. The method according to claim 1 , wherein the determining the second search space comprises:
determining an initial search space of the at least two control channels having different signaling lengths.
5. The method according to claim 3 , wherein the first search space is at least a portion of initial search spaces of the at least two control channels having the identical signaling length.
6. A method for detecting a control channel, comprising:
receiving, by user equipment, search space having control channels that have identical signal length and search space having control channels that have different signaling lengths;
determining, by the user equipment, for the same aggregation level, at least two control channels having an identical signaling length and at least two control channels having different signaling lengths;
determining, by the user equipment, a first search space corresponding to the at least two control channels having the identical search length; and
determining, by the user equipment, in at least one time transmission unit for the same aggregation level, a second search space corresponding to the at least two control channels having signaling lengths different from that of the control channels having the identical signaling length; and
detecting, by the user equipment, the at least two control channels in the first search space, and the at least two control channels in the second search space.
7. The method according to claim 6 , wherein the at least two control channels having the identical signaling length correspond to different component carriers.
8. The method according to claim 6 , wherein determining the first search space comprises:
determining initial search spaces of the at least two control channels having identical signaling length.
9. The method according to claim 6 , wherein the determining the second search spaces comprises:
determining an initial search space of the at least two control channels having different signaling lengths.
10. The method according to claim 8 , wherein the first search space is at least a portion of search space formed of initial search spaces of the at least two control channels that have the same signaling length.
11. A network equipment, comprising:
a processing unit, configured to determine, for the same aggregation level, a first search space for at least two control channels having the same signaling length, the processing unit being operable to determine for at least one time transmission unit for the same aggregation level, a second search space for at least two control channels having different signaling lengths;
a mapping unit, configured to map the at least two control channels having the same signaling length to the first search space, and to map the at least two other control channels having different signaling lengths to the second search space.
12. The network equipment according to claim 11 , wherein the at least two control channels having the same signaling length correspond to different component carriers.
13. The network equipment according to claim 11 , wherein determining the first search space comprises:
determining initial search spaces of the at least two control channels having the same signaling length.
14. The network equipment according to claim 11 , wherein determination of the second search space comprises:
determining an initial search space for each of the at least two control channels having a signaling length different from that of the at least two control channels having identical signaling length.
15. The network equipment according to claim 13 , wherein the first search space is at least a portion of initial search spaces of the at least two control channels having the same signaling length.
16. A user equipment, comprising:
a receiving unit, configure to receive search space having control channels that have identical signal length and search space having control channels that have different signaling lengths;
a processing unit, configured to determine, for the same aggregation level, a first search space for at least two control channels having the same signaling length,
the processing unit being operable to determine for at least one time transmission unit for the same aggregation level, a second search space for at least two control channels having different signaling lengths;
a detecting unit, configured to detect the at least two control channels in the first search space, and the at least two control channels in the second search space.
17. The user equipment according to claim 16 , wherein the at least two control channels having the identical signaling length correspond to different component carriers.
18. The user equipment according to claim 16 , wherein determining the first search space comprises:
determining initial search spaces of the at least two control channels having identical signaling length.
19. The user equipment according to claim 16 , wherein determination of the second search space comprises:
determining an initial search space for each of the at least two control channels having a signaling length different from that of the at least two control channels having identical signaling length.
20. The user equipment according to claim 18 , wherein the first search space is at least a portion of initial search spaces of the at least two control channels having identical signaling length.