COMMON EPDCCH SEARCH SPACE

• US 20160150508A1
• Filed: 08/09/2013
• Published: 05/26/2016
• Est. Priority Date: 08/09/2013
• Status: Active Grant

• Current Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Original Assignee: Panasonic Intellectual Property Corporation of America (Panasonic Holdings Corporation)
• Inventors: Golitschek Edler Von Elbwart, Alexander, Suzuki, Hidetoshi, Horiuchi, Ayako, Wang, Lilei
• Granted Patent: US 9,769,818 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 5/001 the frequencies being arranged in component carriers
• CPC Class Codes: H04L 5/0048 Allocation of pilot signals, i.e. of signals known to the receiver
• CPC Class Codes: H04L 5/0053 Allocation of signaling, i.e. of overhead other than pilot signals
• CPC Class Codes: H04W 72/23 in the downlink direction of a wireless link, i.e. towards a terminal

Abstract

The present invention relates to a method for configuring a common search space in an Enhanced Physical Downlink Control Channel for at least a first User Equipment and a second User Equipment, by means of a configurable Radio Network Temporary Identifier. The invention further relates to the corresponding transmitter and received implementing the method.

Claims

1-19. -19. (canceled)

20. A method for determining resources for control channel transmission, including the step of storing a configurable Radio Network Temporary Identifier in a first User Equipment as well as in a second User Equipment in the same cell of the first User Equipment,

wherein the configurable Radio Network Temporary Identifier has the same value for the first User Equipment and for the second User Equipment and

wherein the configurable Radio Network Temporary Identifier is configured to define a common search space in an Enhanced Physical Downlink Control Channel for the first User Equipment and for the second User Equipment.

21. The method according to claim 20 wherein the value of the configurable Radio Network Temporary Identifier is a fixed value, in particular 0, or it is computed based on any value associated with the cell detection procedure, in particular the Physical Cell ID, and/or based on a value conveyed by a Master Information Block, and/or based on the value of a Physical Broadcast Channel, and/or based on the value of a Radio Resource Control information element.

22. The method according to claim 21 wherein the value of the configurable Radio Network Temporary Identifier is equal to the Physical Cell ID plus 1.

23. The method according to claim 20 further comprising the step of transmitting data to the first and/or second User Equipment based on the value of the configurable Radio Network Temporary Identifier.

24. The method according to claim 23 wherein the step of transmitting data comprises the step of mapping the data to one or more Enhanced Control Channel Element defined based on the value of the configurable Radio Network Temporary Identifier.

25. The method according to claim 23 wherein the step of transmitting data comprises the step of adding a Cyclic Redundancy Check code to the data, and wherein the Cyclic Redundancy Check code is masked by using the configurable Radio Network Temporary Identifier, in particular by a binary XOR operation of the Cyclic Redundancy Check code with the configurable Radio Network Temporary Identifier.

26. The method according to claim 23 wherein the step of transmitting data comprises the step of adding a Cyclic Redundancy Check code to the data, and wherein the Cyclic Redundancy Check code is masked by using a Cell Radio Network Temporary Identifier, in particular by a binary XOR operation of the Cyclic Redundancy Check code with a Cell Radio Network Temporary Identifier.

27. The method according to claim 24 wherein the configurable Radio Network Temporary Identifier is used for the mapping of high aggregation levels, in particular for the two highest available aggregation levels, and wherein the configurable Radio Network Temporary Identifier is not used for the mapping of at least one of the remaining aggregation levels.

28. The method according to claim 27

wherein two distributed Enhanced Physical Downlink Control Channel-Physical Resource Block sets are used and the first set of the two Enhanced Physical Downlink Control Channel-Physical Resource Block sets offers more high aggregation level candidates than the second set of the two distributed Enhanced Physical Downlink Control Channel-Physical Resource Block sets, and

wherein the configurable Radio Network Temporary Identifier is used for the mapping of only the first set of the two distributed Enhanced Physical Downlink Control Channel-Physical Resource Block sets.

29. The method according to claim 27

wherein one distributed Enhanced Physical Downlink Control Channel-Physical Resource Block set and one localized Enhanced Physical Downlink Control Channel-Physical Resource Block set are used, and

wherein the configurable Radio Network Temporary Identifier is used for the mapping of only the distributed Enhanced Physical Downlink Control Channel-Physical Resource Block set.

30. The method according to claim 24 wherein the configurable Radio Network Temporary Identifier is used for the mapping of low aggregation levels, in particular for the two lowest available aggregation levels and wherein the configurable Radio Network Temporary Identifier is not used for the mapping of at least one of the remaining aggregation levels.

31. The method according to claim 30

wherein two distributed Enhanced Physical Downlink Control Channel-Physical Resource Block sets are used and the second set of the two Enhanced Physical Downlink Control Channel-Physical Resource Block sets offers more low aggregation level candidates than the first set of the two distributed Enhanced Physical Downlink Control Channel-Physical Resource Block sets, and

wherein the configurable Radio Network Temporary Identifier is used for the mapping of only the second set of the distributed two Enhanced Physical Downlink Control Channel-Physical Resource Block sets.

32. The method according to claim 30 wherein one distributed Enhanced Physical Downlink Control Channel-Physical Resource Block set and one localized Enhanced Physical Downlink Control Channel-Physical Resource Block set are used, and wherein the configurable Radio Network Temporary Identifier is used for the mapping of only the localized Enhanced Physical Downlink Control Channel-Physical Resource Block set.

33. The method according to claim 23 wherein the data defines a Time Division Duplex uplink/downlink configuration value for the communication between a transmitter and the first User Equipment and/or the second User Equipment.

34. The method according to claim 23 wherein the data is transmitted in fixed downlink subframes only, in particular in subframe 0 and in subframe 5, of a radio frame.

35. The method according to claim 34 wherein a Cell Radio Network Temporary Identifier is used for mapping the data to one or more Enhanced Control Channel Element in the remaining subframes of a radio frame.

36. The method according to claim 24 wherein three Enhanced Physical Downlink Control Channel-Physical Resource Block sets are available and the configurable Radio Network Temporary Identifier is used for the mapping of only one of the three Enhanced Physical Downlink Control Channel-Physical Resource Block sets.