WO2013123637A1 - Amélioration de la mesure pour un nouveau type de porteuse - Google Patents

Amélioration de la mesure pour un nouveau type de porteuse Download PDF

Info

Publication number
WO2013123637A1
WO2013123637A1 PCT/CN2012/071354 CN2012071354W WO2013123637A1 WO 2013123637 A1 WO2013123637 A1 WO 2013123637A1 CN 2012071354 W CN2012071354 W CN 2012071354W WO 2013123637 A1 WO2013123637 A1 WO 2013123637A1
Authority
WO
WIPO (PCT)
Prior art keywords
user equipment
measurements
serving cell
cell
finite range
Prior art date
Application number
PCT/CN2012/071354
Other languages
English (en)
Inventor
Wei Bai
Na WEI
Haiming Wang
Erlin Zeng
Wei Hong
Pengfei Sun
Original Assignee
Renesas Mobile Corporation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Renesas Mobile Corporation filed Critical Renesas Mobile Corporation
Priority to PCT/CN2012/071354 priority Critical patent/WO2013123637A1/fr
Publication of WO2013123637A1 publication Critical patent/WO2013123637A1/fr

Links

Classifications

    • 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
    • H04W36/00835—Determination of neighbour cell lists
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/16—Discovering, processing access restriction or access information
    • 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
    • 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

Definitions

  • the exemplary and non-limiting embodiments of this invention relate generally to wireless communication systems, methods, devices and computer programs, and more specifically relate to user equipment UE measurements of neighbour cells.
  • CA Carrier Aggregation in LTE-Advanced extends the maximum bandwidth in the uplink (UL) and/or downlink (DL) directions by aggregating multiple component carriers within a frequency band (intra-band CA) or across different frequency bands (inter-band CA).
  • Figure 1 shows a CA arrangement that is sometimes referred to as a heterogeneous network or hetnet.
  • the hetnet scenario of Figure 1 is scenario 4 for carrier aggregation detailed at 3 GPP TS 36.300vl 1.0.0 informative annex J.1.
  • the eNB 101 provides macro coverage on frequency fl 110 and a number of remote radio heads (RRH) 102a, 102b are deployed on frequency f2 120 in areas of high traffic such as railway stations, airports, shopping malls, etc. Alternatively, dedicated pico eNBs may be deployed in place of the remote radio heads. While Figure 1 depicts inter-band CA, these teachings are applicable also for inter-band CA.
  • the user equipment (UE) in an environment with other cells neighboring its serving cells will typically take and report measurements of those neighbor cells for various purposes; so its serving cell can know which is the best handover candidate for that UE or know whether there is a candidate hotspot for offloading the UE's traffic to name just two.
  • the network configures the UE to perform neighbor cell measurements, but extending the conventional practice to the hetnet deployment of Figure 1 with macro cells 101 and RRHs 102a, 102b may result in the UE performing many unnecessary measurements even if it is out of the RRH coverage area 120.
  • the macro eNB 101 serving cell wants to avoid the UE missing its measurement for the carrier 110 which is operated by some RRH 102a, it can configure a lower value for S-measure or even not configure S-measure to UE.
  • the network provides to the UE in the MeasConfig information element a parameter s-Measure which is a threshold for the macro cell 101 to control whether or not the UE is required to perform neighbour cell measurements. If the serving cell reference signal received power RSRP measured by the UE is greater than the s-Measure parameter, the UE does not measure other cells. The network can disable this by setting the value "0" for the s-Measure parameter. But a UE in the Figure 1 environment and configured with a low or zero value for the s-Measure parameter may waste power by taking measurements which may not be useful.
  • 3GPP TS 36.331 details the s-Measure parameter as follows;
  • a method comprising: determining a finite range for measuring a serving cell; and conditioning measurements of a neighbor cell on measurements of the serving cell falling within the finite range.
  • an apparatus for communicating comprising at least one processor and at least one memory including computer program code.
  • the at least one processor is arranged with the memory storing the computer program code to cause the apparatus to perform: determining a finite range for measuring a serving cell; and conditioning measurements of a neighbor cell on measurements of the serving cell falling within the finite range.
  • a computer readable memory tangibly storing a set of instructions which, when executed on a communicating apparatus such as a user equipment or network access node causes the apparatus to perform at least: determining a finite range for measuring a serving cell; and conditioning measurements of a neighbor cell on measurements of the serving cell falling within the finite range.
  • an apparatus for communicating comprising means for determining a finite range for measuring a serving cell; and means for conditioning measurements of a neighbor cell on measurements of the serving cell falling within the finite range.
  • the means for the determining comprises circuitry for determining the finite range from a special measurement object received at a radio receiver of the user equipment; and the means for conditioning measurements of the neighbor cell comprises circuitry which controls whether or not the user equipment is to measure the neighbor cell based on whether or not measurements of the serving cell fall within the finite range.
  • the means for the determining comprises circuitry for selecting the finite range from a local memory (suitable for the neighbor cell or cells); and the means for conditioning measurements of the neighbor cell comprises circuitry configured to send to a user equipment a special measurement object which indicates low and high thresholds to define the finite range which instructs the user equipment of a condition for measuring the neighbor cell.
  • Figure 1 is a prior art schematic diagram illustrating scenario 4 for carrier aggregation from 3GPP TS 36.300 vl 1.0,0 showing remote radio heads/pico cells within larger macro cells, and illustrates an example environment in which some embodiments of these teachings may be practiced.
  • Figure 2 illustrates a hetnet scenario similar to Figure 1 but showing how the RSRP range according to some example embodiments of these teachings operate for three different UEs at different positions relative to the macro cell.
  • Figure 3 is a logic flow diagram that illustrates, from the perspective of the UE and the network access node, the operation of a method, and a result of execution of computer program instructions embodied on a computer readable memory, in accordance with the exemplary embodiments of this invention.
  • Figure 4 is a non-limiting example of a simplified block diagram of the UE in communication with a wireless network illustrated as an eNB and a MME/S-GW, which are exemplary electronic devices suitable for use in practicing some example embodiments of this invention.
  • a wireless network illustrated as an eNB and a MME/S-GW, which are exemplary electronic devices suitable for use in practicing some example embodiments of this invention.
  • Exemplary embodiments according to the teachings detailed below provide an enhanced measurement procedure from the UE point of view which provides a more efficient power consumption and a faster cell identification for the RRH scenario such as that shown at Figure 1.
  • these teachings also detail some special forward compatible designs to suit the possible new LTE carrier type noted in the background section above.
  • the eNB configures a finite range of measurement quantity, for example RSRP, for a macro carrier which is used as mobility measurement, and a special measurement object for the CA capable UE. If the UE's measured results of the macro carrier falls into the given range, the UE should start the measurement procedure on the configured special measurement object.
  • RSRP measurement quantity
  • the UE's measured results of the macro carrier falls into the given range, the UE should start the measurement procedure on the configured special measurement object.
  • the macro eNB as the UE's serving cell and the pico cell operated by the RRH or by a home eNB as a neighbor cell
  • the UE's measurements of the neighbor cell/pico cell/RRH are conditioned on the UE's measurements of the serving cell/macro eNB falling within the finite range for measuring the serving cell/macro eNB.
  • the eNB which configures the UE with the finite range conditions the UE's measurement of the neighbor cell/pico cell/RRH by sending the UE the limits of that range.
  • the UE conditions its own measurements of the neighbor cell/RRH using the finite range that it received in signaling from the macro cell eNB.
  • the special measurement object defines for the UE which neighbor cell(s)/pico cell(s) RRH(s) is/are subject to the above conditional measuring, and also gives the high and low limits of the range.
  • the UE should not measure the special measurement object unless the RSRP, or RSRQ, or other measurement of the macro cell falls into the configured range.
  • the UE shall: a) do RRM measurement on the configured special measurement object; and b) report to the eNB with UL signaling that the corresponding measurement will be performed.
  • the UE in one instance must wait for the eNB's confirmation to use the measurement gap.
  • the UE may autonomously enter the measurement gap, so long as the UE is already configured to do so by the network. While each special measurement object should have two thresholds to set the finite quantity range, nothing precludes the thresholds for different special measurement objects from being identical,
  • a given UE may be configured with two special measurement objects, each identifying different RRHs but each having identical high and low thresholds to set the range.
  • the network can more efficiently list both those RRHs in the same special measurement object which has only one pair of thresholds to set the single range that the UE will apply for both RRHs. If the range changes for one but not both of those RRHs, the network can then replace that previous special measurement object by configuring the UE with two new special measurement objects, each identifying a different RRH and giving a different range for measuring them.
  • the eNB should configure one or more special measurement object(s) to the UE, and with two RSRP or RSRQ thresholds which we refer to as th-1 and th-2. In practical systems these two thresholds should be pre- tested by the network operator, or configured by network operations and maintenance. Regardless, these two thresholds will define a range where the RRH might be deployed.
  • the eNB could confirm the UE's request to enter the measurement gap to do the measurement.
  • the eNB could configure the UE to autonomously enter the measurement gap, and then just assume there was a gap used for that purpose once the eNB receives the UE's measurement reporting of the RRH. In this case the UE need not specifically send a request to the eNB to enter the measurement gap.
  • N freq which is defined at section 8.2.1.1 of 3 GPP TS 36.133 vl 0.5.0 (2011-12) as the effective total number of frequencies excluding the serving frequency being monitored using gaps.
  • RRH-1 26-1
  • RRH-2 RRH-2
  • RRH-3 RRH-3
  • RRH-4 RRH-4
  • the RRHs are spaced sufficiently that they are each operating on the same frequency band, component carrier 2 (CC-2 in the figure, assumed to be a secondary cell/secondary component carrier for the respective UEs 20- 1 , 20-2, 20-3) and their respective coverage areas are shown by shading.
  • the macro eNB 22 is operating on a different band, component carrier 1 (assumed to be the primary cell/primary component carrier for the respective UEs).
  • component carrier 2 is consistent with the new LTE carrier noted in the background section above.
  • UE-1 There are three UEs in Figure 2, designated as UE-1 (20-1), UE-2 (20-2) and UE-3 (20-3), and each are at different positions relative to the macro eNB 22.
  • UE-1 UE-1
  • UE-2 UE-2
  • UE-3 UE-3
  • RSRP/RSRQ is linearly correlated with distance such that the UE-3 (20-3) nearest the macro eNB 22 sees the highest RSRP RSRQ and the furthest UE-2 (20-3) sees the lowest.
  • each of these three UEs are configured by the macro eNB 22 with four special measurement objects, each identifying a different one of the four RRHs and each having identical high and low thresholds for the measurement range, [0031]
  • the RSRP RSRQ of the macro eNB 22 measured by UE-1 (20-1) lies within the range defined by the low threshold and the high threshold, so it may start to measure the potential RRH-1 (26-1).
  • the RSRP/RSRQ of the macro eNB 22 measured by UE-2 (20-2) falls below the low threshold of the range and so UE-2 (20-2) has not met the conditions to measure RRH-2 (26-2) which it is near (though UE-2 may not be able to hear RRH-2 anyway given the illustrated coverage area), so UE-2 will not make any attempt to measure RRH-2, thus saving power.
  • the RSRP/RSRQ of the macro eNB 22 measured by UE-3 (20-3) falls above the high threshold of the range and so UE-3 also has not met the conditions to measure any of the four RRHs, which as illustrated in Figure 2 UE-3 cannot hear with sufficient signal strength anyway. This may save power at UE-3 (20-3).
  • the high and low thresholds in effect define a two dimensional torus or donut about the macro eNB in which lie those four RRHs; those UEs beyond the donut's outer perimeter (partially shown by dashed line 204) will see too low RSRP/RSRQ, those UEs inside the donut's inner perimeter (partially shown by dashed line 202) will see too high RSRP/RSRQ, and those UEs within the confines of the donut will see their RSRP RSRQ from the macro cell within the range. If for example RRH-4 were notably further from the macro eNB than is shown at Figure 2, the appropriate range for it would be a reduced low threshold and a reduced high threshold (assuming a linear relation of distance to signal strength).
  • Figure 2 shows two radial lines 206 extending from the macro eNB which give the AoA information for RRH-3 and component carrier 2.
  • the AoA information serves to segment the donut so as to identify radially the coverage limits of the different RRHs.
  • the eNB 22 could just configure the carrier which it estimates the UE might be located in as a special measurement object according to the angle information.
  • the special measurement object There is a high and a low threshold, and a physical cell identifier which identifies the cell or cells which are to be measured if the measured signal from the macro eNB falls between those high and low thresholds.
  • CellsToAddModSpecial :: SEQUENCE ⁇ " . ' " : " . ' . .;. celllndex INTEGER (I..maxCellMeas) , ;:. J ' ⁇ ' ; physCellld * . PhysCellld,
  • ThrosholdT.ow - RSRP-Range ThrosholdT.ow - RSRP-Range .
  • One technical advantage of these teachings is that the eNB could control the UE to do measurements at the correct time when its measurements of the H might provide useful information. This would result in savings to the UE's power consumption; would reduce the delay for the UE to identify the cell which is operated by a RRH, and would reduce the U-plane interruption by efficiently utilizing the measurement gap, for example.
  • Figure 3 is a logic flow diagram which summarizes some example embodiments of the invention.
  • Figure 3 is worded to describe from the perspective of the UE and from the perspective of the macro eNB (or one or more components of either) that is operating as the serving cell to the UE.
  • Figure 3 may be considered to illustrate the operation of a method for operating a wireless communications device, and a result of execution of a computer program stored in a computer readable memory, and a specific manner in which components of an electronic device are configured to cause that electronic device to operate, whether such an electronic device is the UE, the eNB or other network access node operating as the serving cell, or one or more components therefore such as a modem, chipset, or the like.
  • Such blocks and the functions they represent are non-limiting examples, and may be practiced in various components such as integrated circuit chips and modules, and that the exemplary embodiments of this invention may be realized in an apparatus that is embodied as an integrated circuit.
  • the integrated circuit, or circuits may comprise circuitry (as well as possibly firmware) for embodying at least one or more of a data processor or data processors, a digital signal processor or processors, baseband circuitry and radio frequency circuitry that are configurable so as to operate in accordance with the exemplary embodiments of this invention.
  • circuit/circuitry embodiments include any of the following; (a) hardware-only circuit implementations (such as implementations in only analog and/or digital circuitry) and (b) combinations of circuits and software (and/or firmware), such as: (i) a combination of processor(s) or (ii) portions of processor(s)/software (including digital signal processor(s)), software, and memory(ies) that work together to cause an apparatus, such as a mobile phone UE, to perform the various functions summarized at Figure 3) and (c) circuits, such as a microprocessor (s) or a portion of a microprocessor(s), that require software or firmware for operation, even if the software or firmware is not physically present.
  • circuitry would also cover an implementation of merely a processor (or multiple processors) or portion of a processor and its (or their) accompanying software and/or firmware.
  • circuitry also covers, for example, a baseband integrated circuit or applications processor integrated circuit for a mobile phone UE or a similar integrated circuit in a server, a cellular network device, or other network device,
  • the wireless communications device determines a finite range for measuring a serving cell. It is finite because it has both low and high limits. Then at block 304 measurements of a neighbor cell are conditioned on measurements of the serving cell falling within the finite range.
  • the neighbor cell is a pico cell identified in a special measurement object that is configured by a wireless network for a UE, and the finite range for measuring the serving cell (macro eNB) comprises a low threshold and a high threshold for reference signal received power SRP or reference signal received quality RSRQ.
  • the pico cell may be operated by a remote radio head such as those shown at Figure 1, or by a home eNB (sometimes referred to as an HeNB) for example, or by other such small-cell access nodes.
  • Block 306 characterizes that the measurements of the neighbor cell are done within a measurement gap during which a UE taking the measurements may not be (that is, it may not be required by the network to be) in contact with the serving cell.
  • Block 306 represents, for the case in which the UE will use a measurement gap for the neighbor cell measurement, there is a confirmation between the serving cell and the UE that the UE can enter the measurement gap to take at least one of the measurements of the neighbor cell.
  • Block 308 specifies that when Figure 3 is done by the serving cell (or one or more components therefore), then the determining at block 302 further comprises signaling the determined finite range to a UE to perform block 304. That is, the eNB signaling the range to the UE is how the eNB conditions the UE's measurements of the neighbor cell (which are taken by the UE) on measurements of the serving cell taken by the UE falling within the finite range.
  • Block 310 specifies that when Figure 3 is done by the UE (or one or more components therefore), then the finite range at block 302 is determined from signaling received at the UE from the serving cell, and then Figure 3 further includes the UE reporting the measurements of the neighbor cell to the serving cell.
  • Block 312 follows from block 310 since it is autonomous by the UE. Specifically, the UE's measurements of the neighbor cell are at block 312 done within a measurement gap during which the UE taking the measurements is not required by the network to be in contact with the serving cell, and in this particular embodiment the UE enters the measurement gap autonomously so long as it has been configured to do so by the serving cell/network.
  • a wireless network (macro eNB 22 and mobility management entity MME and/or serving gateway S-GW 24) is adapted for communication over a wireless link 21 A with an apparatus, such as a mobile terminal or UE 20, via a network access node such as a base station/macro eNB 22 or relay station.
  • the network may include the MME/S-GW 24 which provides connectivity with further networks (e.g., a publicly switched telephone network PSTN and/or a data communications network/Internet).
  • the UE 20 includes processing means such as at least one data processor (DP) 20A, storing means such as at least one computer-readable memory (MEM) 20B storing at least one computer program (PROG) 20C, communicating means such as a transmitter TX 20D and a receiver RX 20E for bidirectional wireless communications with the network access node 22 via one or more antennas 20F. Also stored in the MEM 20B at reference number 20G is the UE's rules for handling the special measurement object and for applying the RSRP or RSRQ range for deciding if it should make a measurement of the RRH it identifies, as is detailed above with specificity.
  • the network access node/macro eNB 22 also includes processing means such as at least one data processor (DP) 22A, storing means such as at least one computer-readable memory (MEM) 22B storing at least one computer program (PROG) 22 C, and communicating means such as a transmitter TX 22D and a receiver RX 22E for bidirectional wireless communications with the UE 20 via one or more antennas 22F.
  • the access node 22 also includes at unit 22 G the rules for creating the special measurement object and for setting the RSRP or RSRQ range for conditioning the UE's measurements of the RRH.
  • the UE 20 has a wireless link 21B with the RRH/pico eNB 26 for taking measurements thereof.
  • the RRH/pico eNB 26 is also illustrated as having a data processor (DP) 26 A, storing means / computer-readable memory (MEM) 26B storing at least one computer program (PROG) 26C, and communicating means such as a transmitter TX 26D and a receiver RX 26E for bidirectional wireless communications with the UE 20 via one or more antennas.
  • DP data processor
  • MEM computer-readable memory
  • PROG computer program
  • the MME/S-GW 24 includes processing means such as at least one data processor (DP) 24A, storing means such as at least one computer-readable memory (MEM) 24B storing at least one computer program (PROG) 24C, and communicating means such as a modem 24H for bidirectional wireless communications with the eNB 22 via the data/control path 25. While not particularly illustrated for the UE 20 or macro eNB 22 or RRH/pico eNB 26, those devices are also assumed to include as part of their wireless communicating means a modem which may be inbuilt on an RF front end chip within those devices 20, 22, 26 and which also carries the TX 20D/22D/26D and the RX 20E/22E/26E.
  • DP data processor
  • MEM computer-readable memory
  • PROG computer program
  • At least one of the PROGs 20C/20G in the UE 20 is assumed to include program instructions that, when executed by the associated DP 2 OA, enable the device to operate in accordance with the exemplary embodiments of this invention, as detailed above particularly with respect to Figure 3.
  • the macro eNB 22 (and the RRH 26) also has software stored in its MEM 22B to implement certain aspects of these teachings as detailed above particularly with respect to Figure 3.
  • the exemplary embodiments of this invention may be implemented at least in part by computer software stored on the MEM 20B, 22B which is executable by the DP 20A of the UE 20 and/or by the DP 22A 26A of the access node(s) 22, 26, or by hardware, or by a combination of tangibly stored software and hardware (and tangibly stored firmware).
  • Electronic devices implementing these aspects of the invention may not be the entire UE 20 or macro eNB 22 (or 26), but exemplary embodiments may be implemented by one or more components of same such as the above described tangibly stored software, hardware, firmware and DP, modem, system on a chip SOC or an application specific integrated circuit ASIC.
  • the various embodiments of the UE 20 can include, but are not limited to personal portable digital devices having wireless communication capabilities, including but not limited to cellular telephones, navigation devices, laptop/palmtop/tablet computers, digital cameras and Internet appliances.
  • Various embodiments of the computer readable MEMs 20B, 22B and 26B include any data storage technology type which is suitable to the local technical environment, including but not limited to semiconductor based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory, removable memory, disc memory, flash memory, DRAM, SRAM, EEPROM and the like.
  • DPs 20A, 22A and 26A include but are not limited to general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and multi-core processors.
  • DSPs digital signal processors
  • multi-core processors Some of the various features of the above non-limiting embodiments may be used to advantage without the corresponding use of other described features. The foregoing description should therefore be considered as merely illustrative of the principles, teachings and exemplary embodiments of this invention, and not in limitation thereof.
  • E-UTRAN evolved UTRAN also known as LTE
  • LTE long term evolution also known as E-UTRAN

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Dans certains exemples de modes de réalisation particuliers de l'invention, une cellule serveuse (macro-cellule/eNB) envoie à un équipement d'utilisateur U un objet de mesure spécial qui identifie une cellule voisine (pica-cellule) et donne une plage finie pour mesurer la cellule serveuse. Le fait que U effectue une mesure et envoie un rapport concernant cette cellule voisine dépend du fait que la mesure de l'équipement d'utilisateur effectuée sur la cellule serveuse se trouve à l'intérieur de cette plage finie. Dans les exemples, la plage donne des seuils bas et hauts pour la puissance ou la qualité de réception du signal de référence. Dans un mode de réalisation, le réseau doit envoyer une confirmation avant que le U ne commence à utiliser un prochain intervalle de mesure pour mesurer cette cellule voisine ; dans un autre, le U entre dans l'intervalle de manière autonome si le U a été précédemment configuré par le réseau pour un fonctionnement autonome.
PCT/CN2012/071354 2012-02-20 2012-02-20 Amélioration de la mesure pour un nouveau type de porteuse WO2013123637A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2012/071354 WO2013123637A1 (fr) 2012-02-20 2012-02-20 Amélioration de la mesure pour un nouveau type de porteuse

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2012/071354 WO2013123637A1 (fr) 2012-02-20 2012-02-20 Amélioration de la mesure pour un nouveau type de porteuse

Publications (1)

Publication Number Publication Date
WO2013123637A1 true WO2013123637A1 (fr) 2013-08-29

Family

ID=49004914

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2012/071354 WO2013123637A1 (fr) 2012-02-20 2012-02-20 Amélioration de la mesure pour un nouveau type de porteuse

Country Status (1)

Country Link
WO (1) WO2013123637A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106165524A (zh) * 2014-01-29 2016-11-23 交互数字专利控股公司 用于设备到设备发现或通信的资源选择
RU2643349C1 (ru) * 2014-01-29 2018-02-01 Интердиджитал Пэйтент Холдингз, Инк. Выбор ресурса для обнаружения и связи от устройства к устройству
US10129902B2 (en) 2014-03-19 2018-11-13 Interdigital Patent Holdings, Inc. Device to-device synchronization

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW384585B (en) * 1998-07-09 2000-03-11 Eumitcom Technology Inc The system of decreasing the call blocking probability in wireless local loop system
CN101981974A (zh) * 2008-03-27 2011-02-23 高通股份有限公司 功率高效的小型基站扫描和捕获
CN102150451A (zh) * 2008-10-10 2011-08-10 阿瓦雅公司 用于无线网络的覆盖优化

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
TW384585B (en) * 1998-07-09 2000-03-11 Eumitcom Technology Inc The system of decreasing the call blocking probability in wireless local loop system
CN101981974A (zh) * 2008-03-27 2011-02-23 高通股份有限公司 功率高效的小型基站扫描和捕获
CN102150451A (zh) * 2008-10-10 2011-08-10 阿瓦雅公司 用于无线网络的覆盖优化

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106165524A (zh) * 2014-01-29 2016-11-23 交互数字专利控股公司 用于设备到设备发现或通信的资源选择
US9693338B2 (en) 2014-01-29 2017-06-27 Interdigital Patent Holdings, Inc. Resource selection for device to device discovery or communication
RU2643349C1 (ru) * 2014-01-29 2018-02-01 Интердиджитал Пэйтент Холдингз, Инк. Выбор ресурса для обнаружения и связи от устройства к устройству
US10159061B2 (en) 2014-01-29 2018-12-18 Interdigital Patent Holdings, Inc. Resource selection for device to device discovery or communication
CN106165524B (zh) * 2014-01-29 2020-01-07 交互数字专利控股公司 用于设备到设备发现或通信的资源选择
US10932231B2 (en) 2014-01-29 2021-02-23 Interdigital Patent Holdings, Inc. Resource selection for device to device discovery or communication
US11516776B2 (en) 2014-01-29 2022-11-29 Interdigital Patent Holdings, Inc. Resource selection for device to device discovery or communication
US11910362B2 (en) 2014-01-29 2024-02-20 Interdigital Patent Holdings, Inc. Resource selection for device to device discovery or communication
US10129902B2 (en) 2014-03-19 2018-11-13 Interdigital Patent Holdings, Inc. Device to-device synchronization
US11546923B2 (en) 2014-03-19 2023-01-03 Interdigital Patent Holdings, Inc. Device-to-device synchronization

Similar Documents

Publication Publication Date Title
JP7388480B2 (ja) 無線局、無線局において行われる方法、及び無線端末
US9326178B2 (en) Method for measuring and reporting CSI-RS in wireless communication system, and apparatus for supporting same
EP2590448B1 (fr) Mesures d'Inter-fréquence dans HetNet basé sur la vitesse du dispositif mobile
WO2016021541A1 (fr) Système de communication
EP2876926B1 (fr) Procédé pour faire rapport d'une mesure de manière combinée dans un système de communication sans fil et appareil pour mettre en oeuvre ce procédé
WO2014042468A2 (fr) Procédé de mise en oeuvre d'une acquisition d'informations de système dans un système de communication sans fil, et appareil de mise en oeuvre de ce procédé
WO2013009129A2 (fr) Procédé pour produire un rapport d'informations système dans un système de communication sans fil et dispositif pour mettre en œuvre ce procédé
EP2560441B1 (fr) Procédé et appareil sans fil
WO2013141538A1 (fr) Procédé permettant un déplacement dans un système de communication sans fil et appareil prenant en charge ledit procédé
US9986452B2 (en) Methods of adapting measurement rate accounting for carrier frequency
TW201448626A (zh) 異質網路行動性管理
KR20140050579A (ko) 위치 정보 전송 방법 및 사용자기기
EP2876925B1 (fr) Procédé pour mesurer un signal csi-rs et en faire rapport dans un système de communication sans fil et appareil pour mettre en oeuvre ce procédé
WO2014014328A1 (fr) Procédé de notification de mesure dans un système de communication sans fil et appareil pour la mise en œuvre de ce procédé
WO2013165209A1 (fr) Procédé de commande de signalisation dans un système de communication sans fil et dispositif pour prendre en charge le procédé
EP2564632B1 (fr) Procédures de signalement de proximité en accès radio
US9565611B2 (en) Wireless device, network node and methods therein, computer programs and computer-readable mediums comprising the computer programs, for cell monitoring for cell reselection
WO2014010977A1 (fr) Procédé de compte-rendu d'informations d'état de mobilité dans un système de communication sans fil et appareil le prenant en charge
EP3378246A1 (fr) Transmission de cellules secondaires
WO2013123637A1 (fr) Amélioration de la mesure pour un nouveau type de porteuse
US10111148B2 (en) Apparatus and method for interworking optimization in connection with cellular handover
WO2013162342A1 (fr) Procédé de fonctionnement permettant de rechercher une cellule dans un système de communication sans fil, et dispositif prenant en charge ce procédé
EP2774408A1 (fr) Signalisation de réseau à terminal pour la commande de mesures inter-fréquences

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 12868987

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 12868987

Country of ref document: EP

Kind code of ref document: A1