Physical downlink control channel detection method and device
View Patent ↗A method and device for detecting a Physical Downlink Control Channel, PDCCH, are provided. According to an embodiment of the present invention, the method for detecting a PDCCH at a UE includes: receiving ( 100 ) a configuration of an Enhanced-PDCCH, E-PDCCH; receiving ( 101 ) a subframe; determining ( 102 ) whether the received subframe is a Multimedia Broadcast Multicast Service Single Frequency Network, MBSFN, subframe; and according to a determination result, detecting ( 103 ) the PDCCH, where if the received subframe is an MBSFN subframe, a common PDCCH in the MBSFN subframe is detected, and if the received subframe is a non-MBSFN subframe, an E-PDCCH in the non-MBSFN subframe is detected.
1. A method for detecting a Physical Downlink Control Channel (PDCCH), the method comprising:
receiving an Enhanced-PDCCH (E-PDCCH) configuration from a base station of a mobile communication network at a user equipment served by the base station;
receiving a subframe from the base station at the user equipment;
determining the received subframe is a non-Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN) subframe; and
detecting an E-PDCCH in the received subframe when the received subframe is a non-MBSFN subframe.
2. The method according to claim 1 , further comprising:
determining the received subframe is an MBSFN subframe.
3. The method according to claim 2 , wherein the MBSFN subframe is transmitted through at least one of a system information block and Radio Resource Control (RRC) signaling, wherein the MBSFN subframe transmitted through the system information block is a semi-static MBSFN subframe, wherein the MBSFN subframe transmitted through the RRC signaling is a dynamic MBSFN subframe and comprises all or a part of the semi-static MBSFN subframe.
4. The method according to claim 2 , further comprising:
determining upper layer signaling in the MBSFN subframe indicates the MBSFN subframe is not bearing a Physical Multicast Channel (PMCH); and
detecting the E-PDCCH in the MBSFN subframe not bearing the PMCH.
5. The method according to claim 4 , wherein the upper layer signaling is RRC signaling or is signaling transmitted by a Multicast Control Channel (MCCH).
6. The method according to claim 2 , further comprising:
determining upper layer signaling in the MBSFN subframe indicates the MBSFN subframe is bearing a Physical Multicast Channel (PMCH); and
detecting a common PDCCH in the MBSFN subframe bearing the PMCH.
7. The method according to claim 6 , further comprising:
detecting Downlink Control Information (DCI) of the common PDCCH according to a Cell Radio Network Temporary Identifier (C-RNTI), wherein a format of the DCI is pre-defined or is configured by a serving cell.
8. The method according to claim 6 , wherein when the common PDCCH is detected, a search space is smaller than a User Equipment (UE) specific search space or a common search space, wherein the search space is pre-defined or is configured by a serving cell.
9. A User Equipment (UE) for detecting a Physical Downlink Control Channel (PDCCH), the UE comprising:
a configuration receiving device configured to receive an Enhanced-PDCCH (E-PDCCH) configuration from a base station of a mobile communication network when the UE is served by the base station;
a subframe receiving device configured to receive a subframe from the base station; and
at least one processor and associated memory configured to determine the received subframe is a non-Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN) subframe;
wherein the at least one processor and associated memory are configured to detect an E-PDCCH in the received subframe when the received subframe is a non-MBSFN subframe.
10. The UE according to claim 9 , further comprising:
a determination device configured to determine the received subframe is an MBSFN subframe.
11. The UE according to claim 10 , wherein the determination device is configured to determine upper layer signaling in the MBSFN subframe indicates the MBSFN subframe is bearing a Physical Multicast Channel (PMCH);
wherein the at least one processor and associated memory are configured to detect a common PDCCH in the MBSFN subframe bearing the PMCH.
12. The UE according to claim 11 , wherein the at least one processor and associated memory are configured to detect Downlink Control Information (DCI) of the common PDCCH according to a Cell Radio Network Temporary Identifier (C-RNTI), wherein a format of the DCI is pre-defined or is configured by a serving cell.
13. The UE according to claim 11 , wherein when the common PDCCH is detected, a search space is smaller than a UE specific search space or a common search space, wherein the search space is pre-defined or is configured by a serving cell.
14. The UE according to claim 10 , wherein the MBSFN subframe is transmitted through at least one of a system information block and Radio Resource Control (RRC) signaling, wherein the MBSFN subframe transmitted through the system information block is a semi-static MBSFN subframe, wherein the MBSFN subframe transmitted through the RRC signaling is a dynamic MBSFN subframe and comprises all or a part of the semi-static MBSFN subframe.
15. The UE according to claim 10 , wherein the determination device is configured to determine upper layer signaling in the MBSFN subframe indicates the MBSFN subframe is not bearing a Physical Multicast Channel (PMCH);
wherein the at least one processor and associated memory are configured to detect the E-PDCCH in the MBSFN subframe not bearing the PMCH.
16. The UE according to claim 15 , wherein the upper layer signaling is RRC signaling or is signaling transmitted by a Multicast Control Channel (MCCH).
17. A method for detecting a Physical Downlink Control Channel (PDCCH), the method comprising:
receiving an Enhanced-PDCCH (E-PDCCH) configuration from a base station of a mobile communication network at a user equipment served by the base station;
receiving a subframe from the base station at the user equipment;
determining the received subframe is a Multimedia Broadcast Multicast Service Single Frequency Network (MBSFN) subframe;
determining upper layer signaling in the MBSFN subframe indicates the MBSFN subframe is not bearing a Physical Multicast Channel (PMCH); and
detecting the E-PDCCH in the MBSFN subframe not bearing the PMCH.
18. The method according to claim 17 , wherein the MBSFN subframe is transmitted through at least one of a system information block and Radio Resource Control (RRC) signaling, wherein the MBSFN subframe transmitted through the system information block is a semi-static MBSFN subframe, wherein the MBSFN subframe transmitted through the RRC signaling is a dynamic MBSFN subframe and comprises all or a part of the semi-static MBSFN subframe.
19. The method according to claim 17 , wherein the upper layer signaling is RRC signaling or is signaling transmitted by a Multicast Control Channel (MCCH).
20. The method according to claim 17 , further comprising:
determining the upper layer signaling in the MBSFN subframe indicates the MBSFN subframe is bearing a Physical Multicast Channel (PMCH); and
detecting a common PDCCH in the MBSFN subframe bearing the PMCH.