Classifications

• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04W—WIRELESS COMMUNICATION NETWORKS
  • H04W24/00—Supervisory, monitoring or testing arrangements
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B17/00—Monitoring; Testing
  • H04B17/30—Monitoring; Testing of propagation channels
  • H04B17/309—Measuring or estimating channel quality parameters
  • H04B17/318—Received signal strength
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B17/00—Monitoring; Testing
  • H04B17/30—Monitoring; Testing of propagation channels
  • H04B17/309—Measuring or estimating channel quality parameters
  • H04B17/318—Received signal strength
  • H04B17/328—Reference signal received power [RSRP]; Reference signal received quality [RSRQ]
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B17/00—Monitoring; Testing
  • H04B17/30—Monitoring; Testing of propagation channels
  • H04B17/309—Measuring or estimating channel quality parameters
  • H04B17/336—Signal-to-interference ratio [SIR] or carrier-to-interference ratio [CIR]
• • H—ELECTRICITY
  • H04—ELECTRIC COMMUNICATION TECHNIQUE
  • H04B—TRANSMISSION
  • H04B17/00—Monitoring; Testing
  • H04B17/30—Monitoring; Testing of propagation channels
  • H04B17/382—Monitoring; Testing of propagation channels for resource allocation, admission control or handover

Definitions

• the scaling factor is obtained by using any channel estimation or signal power estimation approach or even timing measurements (e.g., power-based or timing measurements or timing difference measurements).
• Obtaining the scaling factor in general is not limited to a specific relation of time- and/or frequency resources when the signals of the first type are transmitted, e.g. the resources may or may not overlap.
• the overlap may be beneficial, e.g., to allow joint channel estimation to be applied, as described below.
• the scaling factor Y c is derived using the channel estimates that have been jointly determined.
• the scaling factor ⁇ c can be expressed as where
• is the squared (quadratic) norm.
• the level of overlap of the time- and/or frequency resources used for transmissions of the first and second radio signals of the second type is also considered.
• overlap in time and/or frequency may or may not occur and when there is no overlap, there are additional advantages for using the scaling approach.
• other consideration may also be possible.
• the wireless device estimates the channel for the first network node using a signal of the second type (e.g. CRSs), and measures RSRP on the CRS for the first network node (step 906) to obtain a reference estimate p TM cr °> CRS .
• the (virtual) RSRP for the pico cell, p p ic ° >CRS may be determined based on the power scaling factor ⁇ p , correction factors ⁇ macro and P pico , and the RSRP estimate p TM cr °> CRS for the macro cell (step 910).
• the pico a signal of the second type (e.g. CRSs), and measures RSRP on the CRS for the first network node (step 906) to obtain a reference estimate p TM cr °> CRS .
• the (virtual) RSRP for the pico cell, p p ic ° >CRS may be determined based on the power scaling factor ⁇ p , correction factors ⁇ macro and
• RSRP RSRP ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇ ⁇
• At least one of the time and/or frequency resources and the scaling factor may also be derived based on a pre-defined rule.
• the estimate may also be used to form a pre-defined measurement (e.g., RSRP or RSRQ performed on CRS), which may be provided to another node and may in general be used for radio resource management (RRM) tasks, mobility, positioning, radio network planning and optimization, etc.
• a pre-defined measurement e.g., RSRP or RSRQ performed on CRS
• RRM radio resource management
• the wireless device 1 100 is shown as an example embodiment.
• the wireless device 1 100 may include more units than described. In some mobiles, all the units described above may be in a "single chip".
• the channel estimation unit 1 1 12 and the coding/decoding units 1 1 14 and 1 1 15 may be included in the same chip as the TRX unit 1 102 and the

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• Engineering & Computer Science (AREA)
• Computer Networks & Wireless Communication (AREA)
• Signal Processing (AREA)
• Quality & Reliability (AREA)
• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Mobile Radio Communication Systems (AREA)
• Monitoring And Testing Of Transmission In General (AREA)

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• 2013
  • 2013-05-10 US US13/891,442 patent/US9661508B2/en not_active Expired - Fee Related
  • 2013-05-13 WO PCT/EP2013/059765 patent/WO2013171138A2/en not_active Ceased
  • 2013-05-13 CN CN201380025304.7A patent/CN104662824B/zh not_active Expired - Fee Related
  • 2013-05-13 JP JP2015512008A patent/JP6185049B2/ja not_active Expired - Fee Related
  • 2013-05-13 RU RU2014150510A patent/RU2619074C2/ru active
  • 2013-05-13 EP EP13725094.0A patent/EP2850751B1/en not_active Not-in-force

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