Abstract
In a wireless communication system in which a base station communicates with a terminal the base station efficiently notifies of control information for the terminal. A base station apparatus maps an EPDCCH to any of candidates of the EPDCCH included in each of a first EPDCCH set and a second EPDCCH set which are configured by RRC signaling and a mobile station apparatus monitors the candidate of the EPDCCH. The candidate of EPDCCH is determined at least based on the number of resource elements satisfying a predetermined criterion in one of physical resource block pairs that are configured for EPDCCH transmission in the first EPDCCH set.
Technologies
Resource configuration Search Space
Product
User Equipment (UE/Terminal)Base Station (eNB/gNB)
Use Cases
Wireless communication
Services
Transmitting/receiving of control channel/control information
Claim
1-22. (canceled)
23. A terminal apparatus configured to communicate with a base station apparatus, the terminal apparatus comprising:
an Enhanced Physical Downlink Control CHannel (EPDCCH) processor configured to and/or programmed to monitor EPDCCH candidates in each of a first EPDCCH set and a second EPDCCH set, the first EPDCCH set and the second EPDCCH set being configured by a Radio Resource Control (RRC) signaling, wherein the EPDCCH candidates in each of the first EPDCCH set and the second EPDCCH set are determined at least on the basis of a number of resource elements fulfilling a predetermined criteria in one physical resource block pair which is configured for possible EPDCCH transmission of the first EPDCCH set.
24. The terminal apparatus according to claim 23, wherein
in a case where the number of resource elements fulfilling the predetermined criteria in the one physical resource block pair is smaller than a predetermined number, the EPDCCH candidates in each of the first EPDCCH set and the second EPDCCH set are determined at least on the basis of a first EPDCCH candidate number.
25. The terminal apparatus according to claim 24, wherein
in a case where the number of resource elements fulfilling the predetermined criteria in the one physical resource block pair is equal to or larger than the predetermined number, the EPDCCH candidates in each of the first EPDCCH set and the second EPDCCH set are determined at least on the basis of a second EPDCCH candidate number.
26. The terminal apparatus according to claim 24, wherein
the predetermined number is 104.
27. The terminal apparatus according to claim 23, wherein
an OFDM symbol index in the first slot in a subframe of each of the resource elements fulfilling the predetermined criteria is equal to or larger than a value configured for the first EPDCCH set.
28. The terminal apparatus according to claim 23, wherein
each of the resource elements fulfilling the predetermined criteria is included in an enhanced resource element group in a physical resource block pair and is assumed by the terminal apparatus not to be used for transmission of a channel state information reference signal or a cell-specific reference signal.
29. The terminal apparatus according to claim 23, wherein
the EPDCCH candidates in each of the first EPDCCH set and the second EPDCCH set are further determined on the basis of a cyclic prefix type, a subframe type, and a Downlink Control Information (DCI) format monitored.
30. The terminal apparatus according to claim 25, wherein
the first EPDCCH candidate number is included in a first aggregation level group which does not comprise aggregation level 1, the second EPDCCH candidate number is included in a second aggregation level group which comprises aggregation level 1.
31. A base station apparatus configured to communicate with a terminal apparatus, the base station apparatus comprising:
an Enhanced Physical Downlink Control CHannel (EPDCCH) generator configured to and/or programmed to map an EPDCCH to an EPDCCH candidate in either a first EPDCCH set or a second EPDCCH set, the first EPDCCH set and the second EPDCCH set being configured by a Radio Resource Control (RRC) signaling, the EPDCCH candidate in either a first EPDCCH set or a second EPDCCH set is determined at least on the basis of a number of resource elements fulfilling a predetermined criteria in one physical resource block pair which is configured for possible EPDCCH transmission of the first EPDCCH set.
32. The base station apparatus according to claim 31, wherein
in a case where the number of resource elements fulfilling the predetermined criteria in the one physical resource block pair is smaller than a predetermined number, the EPDCCH candidate in either the first EPDCCH set or the second EPDCCH set is determined at least on the basis of a first EPDCCH candidate number.
33. The base station apparatus according to claim 32, wherein
in a case where the number of resource elements fulfilling the predetermined criteria in the one physical resource block pair is equal to or larger than the predetermined number, the EPDCCH candidate in either the first EPDCCH set or the second EPDCCH set is determined at least on the basis of a second EPDCCH candidate number.
34. The base station apparatus according to claim 32, wherein
the predetermined number is 104.
35. The base station apparatus according to claim 31, wherein
an OFDM symbol index in the first slot in a subframe of each of the resource elements fulfilling the predetermined criteria is equal to or larger than a value configured for the first EPDCCH set.
36. The base station apparatus according to claim 31, wherein
each of the resource elements fulfilling the predetermined criteria is included in an enhanced resource element group in a physical resource block pair and is not used for transmission of a channel state information reference signal or a cell-specific reference signal.
37. The base station apparatus according to claim 31, wherein
the EPDCCH candidate in either the first EPDCCH set or the second EPDCCH set is further determined on the basis of a cyclic prefix type, a subframe type, and a Downlink Control Information (DCI) format.
38. The base station apparatus according to claim 33, wherein
the first EPDCCH candidate number is included in a first aggregation level group which does not comprise aggregation level 1, the second EPDCCH candidate number is included in a second aggregation level group which comprises aggregation level 1.
39. A communication method of a terminal apparatus which is configured to communicate with a base station apparatus, the communication method comprising:
monitoring EPDCCH candidates in each of a first EPDCCH set and a second EPDCCH set, the first EPDCCH set and the second EPDCCH set being configured by a Radio Resource Control (RRC) signaling, wherein
the EPDCCH candidates in each of the first EPDCCH set and the second EPDCCH set are determined at least on the basis of a number of resource elements fulfilling a predetermined criteria in one physical resource block pair which is configured for possible EPDCCH transmission of the first EPDCCH set.
40. A communication method of a base station apparatus which is configured to communicate with a terminal apparatus, the communication method comprising:
mapping an EPDCCH to an EPDCCH candidate in either a first EPDCCH set or a second EPDCCH set, the first EPDCCH set and the second EPDCCH set being configured by a Radio Resource Control (RRC) signaling,
the EPDCCH candidate in either a first EPDCCH set or a second EPDCCH set is determined at least on the basis of a number of resource elements fulfilling a predetermined criteria in one physical resource block pair which is configured for possible EPDCCH transmission of the first EPDCCH set.
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Note:
The information in blue was extracted from the third parties (Standard Setting Organisation, Espacenet)
The information in grey was provided by the patent holder
The information in purple was extracted from the FrandAvenue
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