COMMUNICATION SYSTEM
First Claim
1. Communication apparatus for communicating with a plurality of mobile communication devices in a cellular communication system said communication apparatus comprising:
- means for operating at least one communication cell;
means for communicating, via a plurality of antenna ports, a plurality of subframes with each of a plurality of communication devices within said at least one cell, wherein;
each sub-frame comprises a plurality of communication resources defining a control region for communicating a respective control channel and a plurality of communication resources defining a data region for communicating a respective data channel; and
said communicating means is operable to communicate;
first control information using a first reference signal pattern and using a first antenna port; and
second control information using a second reference signal pattern and using a second antenna port.
1 Assignment
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Accused Products
Abstract
A communication system is presented in which a base station is provided for communicating with a plurality of mobile communication devices in a cellular communication system. The base station operates one of more communication cells and communicates subframes, with each of the plurality of communication devices within the cell(s), each comprising the communication resources of a control region for communicating a control channel and the communication resources of a data region for communicating a respective data channel. The base station communicates a control channel having a first DMRS sequence in a control region of some subframes and a control channel having a second DMRS sequence in a control region of other subframes. The second control channel may be transmitted in a radio beam focussed spatially in a direction of a communication device. The first control channel may be transmitted omnidirectionally throughout the cell(s).
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Citations
58 Claims
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1. Communication apparatus for communicating with a plurality of mobile communication devices in a cellular communication system said communication apparatus comprising:
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means for operating at least one communication cell; means for communicating, via a plurality of antenna ports, a plurality of subframes with each of a plurality of communication devices within said at least one cell, wherein; each sub-frame comprises a plurality of communication resources defining a control region for communicating a respective control channel and a plurality of communication resources defining a data region for communicating a respective data channel; and said communicating means is operable to communicate; first control information using a first reference signal pattern and using a first antenna port; and second control information using a second reference signal pattern and using a second antenna port.
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2. A communication device for communicating with communication apparatus of a cellular communication system said communication device comprising:
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means for registering said communication device in at least one communication cell operated by said communication apparatus; means for receiving a plurality of sub-frames transmitted from said communication apparatus via a plurality of antenna ports, wherein;
each sub-frame comprises a plurality of communication resources defining a control region for communicating a respective control channel and a plurality of communication resources defining a data region for communicating a respective data channel; andsaid receiving means is operable; first control information communicated using a first reference signal pattern and using a first antenna port by said communication apparatus; and second control information communicated using a second reference signal pattern and using a second antenna port by said communication apparatus; and means for interpreting said control information communicated using said first reference signal pattern, and for interpreting control information communicated using said second reference signal pattern.
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3. Communication apparatus for communicating with a plurality of mobile communication devices in a cellular communication system said communication apparatus comprising:
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means for operating at least one communication cell; means for communicating a plurality of subframes with each of a plurality of communication devices within said at least one cell, wherein; each sub-frame comprises a plurality of communication resources defining a control region for communicating a respective control channel and a plurality of communication resources defining a data region for communicating a respective data channel; and said communicating means is operable to communicate; a first control channel having a first reference signal pattern in a control region of a first of said subframes; and a second control channel having a second reference signal pattern in a control region of a second of said subframes, wherein said second reference signal pattern is different from said first reference signal pattern. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 41, 51)
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27. A communication device for communicating with communication apparatus of a cellular communication system said communication device comprising:
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means for registering said communication device in at least one communication cell operated by said communication apparatus; means for receiving a plurality of sub-frames from said communication apparatus, wherein; each sub-frame comprises a plurality of communication resources defining a control region for communicating a respective control channel and a plurality of communication resources defining a data region for communicating a respective data channel; and said receiving means is operable; to receive a first control channel having a first reference signal pattern in a control region of a first of said subframes; and to receive a second control channel having a second reference signal pattern in a in a control region of a second of said subframes, wherein said second reference signal pattern is different from said first reference signal pattern; and means for interpreting control information communicated in said first control channel having a first reference signal pattern, and for interpreting control information communicated in said second control channel having a second reference signal pattern. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 42, 43, 44, 45, 46, 58)
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47. A method, performed by communication apparatus, for communicating with a plurality of mobile communication devices in a cellular communication system, the method comprising:
- operating at least one communication cell;
communicating, via a plurality of antenna ports, a plurality of subframes with each of a plurality of communication devices within said at least one cell, wherein each sub-frame comprises a plurality of communication resources defining a control region for communicating a respective control channel and a plurality of communication resources defining a data region for communicating a respective data channel; communicating first control information using a first reference signal pattern and using a first antenna port; and communicating second control information using a second reference signal pattern and using a second antenna port.
- operating at least one communication cell;
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48. A method, performed by a communication device for communicating with communication apparatus of a cellular communication system, the method comprising:
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registering said communication device in at least one communication cell operated by said communication apparatus; receiving a plurality of sub-frames transmitted from said communication apparatus via a plurality of antenna ports, wherein each sub-frame comprises a plurality of communication resources defining a control region for communicating a respective control channel and a plurality of communication resources defining a data region for communicating a respective data channel; receiving first control information communicated using a first reference signal pattern and using a first antenna port by said communication apparatus; interpreting said control information communicated using said first reference signal pattern; receiving second control information communicated using a second reference signal pattern and using a second antenna port by said communication apparatus; and interpreting control information communicated using said second reference signal pattern.
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49. A method, performed by communication apparatus, of communicating with a plurality of mobile communication devices in a cellular communication system said method comprising:
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operating at least one communication cell; communicating a plurality of subframes with each of a plurality of communication devices within said at least one cell, wherein each sub-frame comprises a plurality of communication resources defining a control region for communicating a respective control channel and a plurality of communication resources defining a data region for communicating a respective data channel; communicating control information using a first control channel having a first reference signal pattern in a control region of a first of said subframes; and communicating control information using a second control channel having a second reference signal pattern in a control region of a second of said subframes, wherein said second reference signal pattern is different from said first reference signal pattern.
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50. A method, performed by a communication device, of communicating with communication apparatus of a cellular communication system said method:
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registering said communication device in at least one communication cell operated by said communication apparatus; receiving a plurality of sub-frames from said communication apparatus, wherein each sub-frame comprises a plurality of communication resources defining a control region for communicating a respective control channel and a plurality of communication resources defining a data region for communicating a respective data channel; receiving a first control channel having a first reference signal pattern in a control region of a first of said subframes; interpreting control information communicated in said first control channel having a first reference signal pattern; receiving a second control channel having a second reference signal pattern in a in a control region of a second of said subframes, wherein said second reference signal pattern is different from said first reference signal pattern; and interpreting control information communicated in said second control channel having a second reference signal pattern.
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52. Communication apparatus for communicating with a plurality of mobile communication devices in a cellular communication system said communication apparatus comprising:
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means for operating at least one communication cell; means for communicating a plurality of subframes with each of a plurality of communication devices within said at least one cell, wherein; each sub-frame comprises a plurality of communication resources defining a control region for communicating a respective control channel and a plurality of communication resources defining a data region for communicating a respective data channel; and said communicating means is operable to communicate; control information using a first control channel having a first reference signal pattern in a control region of a first of said subframes; and control information using a second control channel having a second reference signal pattern in one of said control and data regions of a second of said subframes, wherein said second reference signal pattern is different from said first reference signal pattern.
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53. A communication device for communicating with communication apparatus of a cellular communication system said communication device comprising:
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means for registering said communication device in at least one communication cell operated by said communication apparatus; means for receiving a plurality of sub-frames from said communication apparatus, wherein; each sub-frame comprises a plurality of communication resources defining a control region for communicating a respective control channel and a plurality of communication resources defining a data region for communicating a respective data channel; and said receiving means is operable; to receive a first control channel having a first reference signal pattern in a control region of a first of said subframes; and to receive a second control channel having a second reference signal pattern in at least one of a control region and a data region of a second of said subframes, wherein said second reference signal pattern is different from said first reference signal pattern; and means for interpreting control information communicated in said first control channel having a first reference signal pattern, and for interpreting control information communicated in said second control channel having a second reference signal pattern.
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54. Communication apparatus for communicating with a plurality of mobile communication devices in a cellular communication system said communication apparatus comprising:
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means for operating at least one communication cell; means for communicating a plurality of subframes with each of a plurality of communication devices within said at least one cell, wherein; said communicating means is operable to communicate; control information using a first control channel omnidirectionally throughout said cell; and control information using a second control channel in a direction spatially focussed towards a communication device for which the control information is intended.
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55. A communication device for communicating with communication apparatus of a cellular communication system said communication device comprising:
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means for registering said communication device in at least one communication cell operated by said communication apparatus; means for receiving a plurality of sub-frames from said communication apparatus, wherein; said receiving means is operable; to receive a first control channel omnidirectionally by the communication apparatus throughout said cell; and to receive a second control channel transmitted in a direction spatially focussed towards said communication device; and means for interpreting control information communicated in said first control channel, and for interpreting control information communicated in said second control channel.
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56. Communication apparatus for communicating with a plurality of mobile communication devices in a cellular communication system said communication apparatus comprising:
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a cell controller adapted to operate at least one communication cell; a transceiver operable to communicate a plurality of subframes with each of a plurality of communication devices within said at least one cell, wherein; each sub-frame comprises a plurality of communication resources defining a control region for communicating a respective control channel and a plurality of communication resources defining a data region for communicating a respective data channel; and said transceiver is further operable to communicate; control information using a first control channel having a first reference signal pattern in a control region of a first of said subframes; and control information using a second control channel having a second reference signal pattern in at least one of said control and data regions of a second of said subframes, wherein said second reference signal pattern is different from said first reference signal pattern.
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57. A communication device for communicating with communication apparatus of a cellular communication system said communication device comprising:
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a cell registration module operable to register said communication device in at least one communication cell operated by said communication apparatus; a transceiver operable to receive a plurality of sub-frames from said communication apparatus, wherein; each sub-frame comprises a plurality of communication resources defining a control region for communicating a respective control channel and a plurality of communication resources defining a data region for communicating a respective data channel; and said transceiver is further operable; to receive a first control channel having a first reference signal pattern in a control region of a first of said subframes; and to receive a second control channel having a second reference signal pattern in at least one of said control region and said data region of a second of said subframes, wherein said second reference signal pattern is different from said first reference signal pattern; and a processor operable to interpret control information communicated in said first control channel having a first reference signal pattern, and to interpret control information communicated in said second control channel having a second reference signal pattern.
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Specification