FI127339B - Peittoaukkojen määritteleminen RAT-välitysohjausmittauksia käyttäen - Google Patents

Peittoaukkojen määritteleminen RAT-välitysohjausmittauksia käyttäen Download PDF

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FI127339B
FI127339B FI20135774A FI20135774A FI127339B FI 127339 B FI127339 B FI 127339B FI 20135774 A FI20135774 A FI 20135774A FI 20135774 A FI20135774 A FI 20135774A FI 127339 B FI127339 B FI 127339B
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rat
cell
enb
handover
measurements
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FI20135774A
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FI20135774A (fi
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Joey Chou
Jorge Mena
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Intel Corp
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems
    • H04W84/045—Public Land Mobile systems, e.g. cellular systems using private Base Stations, e.g. femto Base Stations, home Node B
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0452—Multi-user MIMO systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0469—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking special antenna structures, e.g. cross polarized antennas into account
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0478—Special codebook structures directed to feedback optimisation
    • H—ELECTRICITY
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    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/04—Arrangements for maintaining operational condition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/08—Testing, supervising or monitoring using real traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/04—Reselecting a cell layer in multi-layered cells
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/046—Wireless resource allocation based on the type of the allocated resource the resource being in the space domain, e.g. beams
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
    • 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
    • H04B17/327—Received signal code power [RSCP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1864—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/00837—Determination of triggering parameters for hand-off
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • H04W36/144—Reselecting a network or an air interface over a different radio air interface technology
    • H04W36/1443—Reselecting a network or an air interface over a different radio air interface technology between licensed networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/18—TPC being performed according to specific parameters
    • H04W52/24—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters
    • H04W52/241—TPC being performed according to specific parameters using SIR [Signal to Interference Ratio] or other wireless path parameters taking into account channel quality metrics, e.g. SIR, SNR, CIR, Eb/lo
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Claims (13)

  1. Patenttivaatimukset
    1. Yksi tai useampi tietokoneluettava media tunnettu siitä, että on ohjeet, jotka tullessaan suoritetuiksi saavat verkkohallinnan, NM, laitteiston (202):
    5 vastaanottamaan ensimmäisen raportin, jossa on yksi tai useampia mittauksia, jotka on otettu ensimmäisellä käyttäjälaitteella, UE (214-220), vasteena tapahtumalle, joka liittyy ensimmäisen UE:n ohjaukseen ensimmäisen RAT:n ja toisen ensimmäisestä RAT:sta eroavan RAT:n välillä;
    vastaanottamaan toisen raportin, jossa on yksi tai useampia mittauk10 siä, jotka on otettu toisella UE:Ila vasteena tapahtumaan, joka liittyy toisen UE:n ohjaukseen ensimmäisen RAT:n ja kolmannen ensimmäisestä RAT:sta eroavan RAT:n välillä;
    korreloimaan toisen raportin ensimmäisen raportin kanssa; määrittämään aukon ensimmäisen RAT:n peittoalueessa vähintään
    15 osittain korrelaation perusteella; ja lähettämään käskyn yhdelle tai useammalle kehitetylle solmu B:Ile eNB (208-212), joka liittyy aukkoon peittoalueessa yhteen tai useampaan eNB:hen liittyvien solujen yhden tai useamman palveluparametrin säätämiseksi, missä yhdessä tai useammassa palveluparametrissa on solun koko tai solun muoto.
  2. 2. Patenttivaatimuksen 1 mukainen yksi tai useampi tietokoneluettava media tunnettu siitä, että:
    ensimmäinen RAT on E-UTRA-teknologia; ja/tai kukin toisesta ja kolmannesta RAT:sta on UTRA-teknologia tai globaali
    25 järjestelmä mobiilin viestinnän paranneltua datanopeutta varten GERAteknologiassa.
  3. 3. Patenttivaatimuksen 1 mukainen yksi tai useampi tietokoneluettava media tunnettu siitä, että ensimmäisen UE:n (214-220) ohjaus ensimmäisen RAT:n ja toisen
    30 RAT:n välillä on ensimmäisen UE:n ohjaus ensimmäisen E-UTRAN-solun ja toisen RAT:n välillä, ja toisen UE:n ohjaus ensimmäisen RAT:n ja kolmannen RAT:n välillä on toisen UE:n ohjaus toisen E-UTRAN-solun ja kolmannen RAT:n välillä, missä toinen E-UTRAN-solu eroaa ensimmäisestä E-UTRAN-solusta.
    20135774 prh 20 -11- 2017
  4. 4. Patenttivaatimuksen 1 mukainen yksi tai useampi tietokoneluettava media tunnettu siitä, että ensimmäiseen raporttiin sisältyvissä yhdessä tai useammassa mittauksessa on yksi tai useampi RSRP, RSRQ, ensimmäisessä RAT:ssa ensimmäiselle UE:lle (214-220) toimineen solun määrittelijä, paikkatietoja aikaleima, joka vastaa
  5. 5 ohjaukseen liittyvän tapahtuman aikaa.
    5. Kehitetty solmu B, eNB (208-212), joka liittyy ensimmäiseen RAT:iin, tunnettu siitä, että eNB:ssä on:
    ensimmäinen lähetyspiiri (228) lähettämään UE:lle (214-220) solussa,
    10 jolle eNB toimii, ensimmäisen käskyn UE:n ohjaamiseksi toiselle RAT:lle, joka on eri kuin ensimmäinen RAT;
    vastaanottopiiri (222):
    vastaanottamaan UE:ltä vastauksena ensimmäiseen käskyyn yhden tai useampia mittauksia, jotka UE on ottanut ja jotka vas15 taavat solun reunojen läheisyyden olosuhteita, ja vastaanottamaan DM-laitteistolta (204) tai NMlaitteistolta (202) toisen käskyn eNB: n solu peittoa lueen yhden tai useamman palveluparametrin säätämiseksi, missä yhdessä tai useammassa palveluparametrissa on peittoalueen koko tai peittoalueen muoto; ja
    20 toinen lähetyspiiri (232) lähettämään DM-laitteistolle tai NM-laitteistolle (202) raportin, jossa on yksi tai useampia mittauksia käytettäväksi peittoaukkojen (106) määrittämisessä ensimmäisessä RAT:ssa, missä toinen käsky perustuu raportin korrelaatioon toiselta eNB:Itä tulevan toisen raportin kanssa.
    25
  6. 6. Patenttivaatimuksen 5 mukainen eNB tunnettu siitä, että toisessa RAT:ssa on
    UTRA-teknologia tai globaali järjestelmä mobiilin viestinnän paranneltua datanopeutta varten GERA-teknologiassa; ja/tai
    UE (214-220) ottaa yhden tai useampia mittauksia vasteena käskyn vastaanottamiseen UE:ssa; ja/tai
    30 UE (214-220) ottaa yhden tai useampia mittauksia ennen käskyn vastaanottamista UE:ssa.
  7. 7. Patenttivaatimusten 5 tai 6 mukainen eNB tunnettu siitä, että ensimmäinen lähetyspiiri (228) on lisäksi tarkoitettu:
    20135774 prh 20 -11- 2017 lähettämään UE:lle (214-220) parametreja, joita vastaavasti UE:n on tarkoitus ottaa mittauksia solun reunojen läheisyyden olosuhteita vastaavasti.
  8. 8. Laitteisto implementoitavaksi verkkohaninnan, NM, laskentalaitteessa tunnettu
    5 siitä, että laitteistossa on:
    vastaanottopiiri (222) vastaanottamaan raportin, jossa on yksi tai useampia mittauksia, jotka on otettu ensimmäisellä käyttäjälaitteella, UE (214-220), vasteena tapahtumalle, joka liittyy ensimmäisen UE:n ohjaukseen ensimmäisen RAT: n ja toisen ensimmäisestä RAT:sta eroavan RAT:n välillä;
  9. 10 peittoanalyysipiiri (224):
    korreloimaan raportin useiden muiden raporttien kanssa, mitkä useat muut UE:t tuottavat, missä ensimmäinen joukko useista muista raporteista perustuu tapahtumien ohjaukseen ensimmäisen RAT:n ja toisen RAT: n välillä ja toinen RAT ja toinen joukko useista muista raporteista
  10. 15 perustuu tapahtumien ohjaukseen toisen ensimmäisen RAT:n ja kolmannen ensimmäisestä RAT:sta eroavan RAT:n välillä, ja määrittämään peittoaukon (106) liittyen ensimmäiseen RAT:iin tai toiseen ensimmäiseen RAT:iin vähintään osittain korrelaation perusteella; ja
  11. 20 korjaava toimintapiiri (226) lähettämään käskyn yhdelle tai useammalle kehitetylle solmulle B, eNB (208-212), joka liittyy peittoaukkoon (106) yhteen tai useampaan eNB:hen liittyvän solun yhden tai useamman palveluparametrin säätämiseksi, missä yhdessä tai useammassa palveluparametrissa on solun koko tai solun muoto.
  12. 25 9. Patenttivaatimuksen 8 mukainen laitteisto, missä ensimmäinen RAT ja toinen ensimmäinen RAT ovat E-UTRA-teknologia-RAT:eja, ja toinen RAT ja kolmas RAT ovat UTRA-teknologia tai globaali järjestelmä mobiilin viestinnän paranneltua datanopeutta varten GERA-teknologiassa.
  13. 30 10. Patenttivaatimuksen 8 mukainen laitteisto, missä raportissa ja kussakin useista muista raporteista on yksi tai useampi RSRP, RSRQ, ensimmäisessä RAT:ssa ensimmäiselle UE:lle (214-220) toimineen solun määrittelijä, paikkatietoja aikaleima, joka vastaa ohjaukseen liittyvän tapahtuman aikaa.
    CN
    C .2 xs s
    ©
    20135774 prh 16 -07- 2013
    CN
    20135774 prh 16 -07- 2013
FI20135774A 2012-07-27 2013-07-16 Peittoaukkojen määritteleminen RAT-välitysohjausmittauksia käyttäen FI127339B (fi)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201261676775P 2012-07-27 2012-07-27
US13/730,266 US8868067B2 (en) 2012-07-27 2012-12-28 Identifying coverage holes using inter-rat handover measurements

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FI20135774A FI20135774A (fi) 2014-01-28
FI127339B true FI127339B (fi) 2018-04-13

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FI20165698A FI127394B (fi) 2012-07-27 2016-09-19 Peiteaukkojen määritteleminen RAT-välitysohjainmittauksia käyttäen

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US (6) US8885752B2 (fi)
EP (4) EP2878092B1 (fi)
JP (3) JP6125629B2 (fi)
KR (3) KR101696992B1 (fi)
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