WO2014075542A1 - Dispositif de mesure de signal et procédé de mesure de signal - Google Patents

Dispositif de mesure de signal et procédé de mesure de signal Download PDF

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Publication number
WO2014075542A1
WO2014075542A1 PCT/CN2013/085787 CN2013085787W WO2014075542A1 WO 2014075542 A1 WO2014075542 A1 WO 2014075542A1 CN 2013085787 W CN2013085787 W CN 2013085787W WO 2014075542 A1 WO2014075542 A1 WO 2014075542A1
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Prior art keywords
node
signal
information
csi
scenario
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PCT/CN2013/085787
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English (en)
Chinese (zh)
Inventor
耿璐
郑萌
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株式会社日立制作所
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Publication of WO2014075542A1 publication Critical patent/WO2014075542A1/fr

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    • 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
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • 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
    • H04L5/0058—Allocation criteria
    • H04L5/0073—Allocation arrangements that take into account other cell interferences
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/005—Allocation of pilot signals, i.e. of signals known to the receiver of common pilots, i.e. pilots destined for multiple users or terminals
    • 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
    • H04L5/0057—Physical resource allocation for CQI
    • 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
    • H04L5/0078—Timing of allocation
    • H04L5/0087—Timing of allocation when data requirements change
    • 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

Definitions

  • the present invention relates to an apparatus and method for providing a service in a mobile communication network. More particularly, it relates to a signal measuring device and a signal measuring method for use in a mobile communication heterogeneous network in a multi-base station joint service system.
  • the mobile communication network mentioned here is a mobile communication system supporting multi-base station joint service. Background technique
  • the 3rd-Generation Partnership Project is an international standards organization that has developed system architectures and standards for second- and third-generation mobile communication networks. These standards have been applied to networks that currently have air interfaces deployed.
  • 3GPP is embarking on the development of a long-term evolution of LTE (Long-Term Evolution) and its evolved version of LTE-Advanced for fourth-generation mobile communication networks, with the aim of increasing the spectrum utilization (throughput/bandwidth) of the system. , especially the spectrum utilization at the cell edge.
  • a typical heterogeneous network scenario is a radio base station (RRH) that includes a plurality of optical fiber-connected radio cell units (RRHs) within the coverage of a macro base station (Macro eNB). Whether it is a macro base station or a radio frequency pull unit, it can be regarded as a The Transmission/Reception Point is collectively referred to as a Node (TP) in this patent.
  • the TP formed by the macro base station has a large coverage, which is called “macro node (macro TP)”.
  • a TP composed of nodes such as a radio frequency unit (RRH) has a small coverage called a "micro node (micro TP)".
  • the 3GPP defines a heterogeneous network scenario in which the macro node and the covered micro node have independent cell identifiers (identifiers: ID) as "scene 3", and the macro node and the covered micro node have the same cell ID.
  • the heterogeneous network scenario is defined as "Scene 4".
  • scenario 3 over scenario 4 is that all cell ID-based system parameters can be easily distinguished by user equipment (User Equipment: UE).
  • FIG. 18 is a schematic structural diagram of a typical heterogeneous network scenario (Scenario 3) with independent cell IDs.
  • scenario 3 the coverage of the macro base station TP1 is the macro cell 104, and the cell identifier is celll.
  • the coverage of the other four low-power nodes TP2, ⁇ 3, ⁇ 4, and ⁇ 5 are respectively four micro-cells, and the cell IDs are cell2, cell3, cell4, and cell5, respectively.
  • the coverage of the four micro nodes TP2, ⁇ 3, ⁇ 4, ⁇ 5 is within the coverage of the macro node TP1.
  • these micro TPs are connected to the macro TP1 through an optical fiber.
  • the macro node TP1 and the micro nodes TP2, ⁇ 3, ⁇ 4, and ⁇ 5 can transmit respective cell specific reference signal CRS (Cell Specific Reference Signal) signals.
  • CRS Cell Specific Reference Signal
  • the UE can distinguish CRS signals CRS1, CRS2, CRS3, CRS4 from different nodes TP1, ⁇ 2, ⁇ 3, ⁇ 4, ⁇ 5.
  • the central controller can accurately distinguish the macro node and the micro node by reporting from the UE, and can work well based on the traditional CRS signal quality measurement, and accurately perform radio resource management (RRM) measurement and Configuration management of multi-point collaborative CoMP measurement sets.
  • RRM radio resource management
  • signal quality measurements for RRM were based on CRS.
  • the UE User Equipment
  • the UE obtains the signal quality from the different cells by measuring the CRS signals from the nodes of the cell in which the UE is located and the neighboring cell nodes, and reports them to the eNB (macro base station) as the primary serving node.
  • the central controller in the macro base station directs the UE to perform corresponding RRM procedures, such as cell selection, cell reselection, handover, and the like.
  • the signal quality is represented by two parameters, one is the pilot signal received power, and the English name is RSRP (Reference Signal Received Power) 0 is defined as the linear average of the pilot signal resource block power sum. Represents the absolute value of the received useful signal.
  • RSRP Reference Signal Received Power
  • RSRQ Reference Signal Received Quality is defined as the sum of the useful received power in the transmission bandwidth compared to the total received power. It represents the relative value of the signal-to-interference ratio.
  • FIG 19 is a schematic diagram of a typical heterogeneous network scenario (Scenario 4) with multiple nodes having the same cell ID.
  • scenario 4 a typical heterogeneous network scenario
  • a macro base station within the same macro cell and a micro node connected thereto have the same cell ID.
  • the coverage of the four micro-nodes TP7, TP8, TP9, and TP10 is within the coverage of the macro node TP6.
  • These micro nodes have the same cell ID as the associated macro node.
  • These micro TPs are connected to the associated macro TP via optical fibers.
  • the nodes TP6, ⁇ 7, TP8, TP9, and TP10 all correspond to the same Cell ID.
  • the UE cannot distinguish the system parameters based on the Cell ID between the macro base station and each micro node, and the nodes TP6, TP7, TP8, and TP9.
  • TP10 sends CRS6 to the UE, so the UE can only get the superposition of CRS signals from all nodes, and can not use the traditional CRS-based signal quality measurement for CoMP measurement set configuration.
  • CSI-RS Channel State Information-Reference Signal
  • this CSI-RS-based signal quality measurement is only used for configuration management of the CoMP measurement set in fixed scene 4, and cannot be used for mobility measurement. And, for moving in a mixed scene There are no related solutions for the management of configuration management and CoMP measurement sets.
  • FIG. 20 is a mixed scenario of a heterogeneous network across base stations composed of scenario 3 and scenario 4.
  • the configuration of adjacent macro nodes is different.
  • the coverage of the macro node TP1 is configured as scene 3, with micro nodes TP2, ⁇ 3, ⁇ 4, ⁇ 5;
  • the macro node ⁇ 6 is configured to be scene 4 in the coverage range, and has micro nodes ⁇ 7, ⁇ 8, ⁇ 9, ⁇ 10.
  • the UE is at the edge of two scenes for signal quality measurement, the following problems occur.
  • TP1 is the primary service macro base station of the mobile phone. Since the signal quality of the serving cell is weak at this time, the signal quality measurement process of the neighboring cell is started to obtain the CoMP service or to switch in time.
  • the UE is currently in scenario 3. If there are neighboring TPs (including macro nodes and micro nodes, such as TP2, ⁇ 3, ⁇ 6) in scenario 4, the signal quality measurement of CSI-RS does not currently support multiple TPs across the base station. CoMP measurement set configuration is performed, so it is impossible for the UE to obtain CoMP services from TPs of different scenarios.
  • the UE since CSI-RS based signal quality measurement does not currently support mobility management, the UE is currently in scenario 3, if it has neighboring TPs (including macro nodes and micro nodes, such as TP2, TP3, ⁇ 6) in scenario 4, The signal quality from these TPs can only be measured by CRS. The UE cannot distinguish the signals from these transmitting nodes and can only obtain the superposition of CRS signals from all transmitting nodes TP6, ⁇ 7, ⁇ 8 in cdl6. Therefore, the signal quality Q N actually measured by CRS6, (RSRP6') will be greater than the signal quality Q N (RSRP6) actually derived from TP6.
  • RSRP6' the signal quality Q N actually measured by CRS6, (RSRP6') will be greater than the signal quality Q N (RSRP6) actually derived from TP6.
  • this patent introduces CSI-RS based signal quality measurement in mobility management.
  • One of the technical solutions of the present invention is a signal measuring apparatus for measuring signals in a heterogeneous network composed of a macro node and a micro node, characterized by comprising: a retrieval module, and searching in a database adjacent to the terminal device
  • the scene information of the neighboring node includes at least node composition and node identifier information in the scene where the neighboring node is located;
  • the determining module determines, according to the retrieval result of the retrieval module, whether the neighboring node belongs to a scenario in which a plurality of nodes have the same cell identifier, and an update module, when the determination result of the determining module is negative, updating the radio resource management set based on the cell-specific reference signal CRS, and when the judgment result of the determining module is positive, the channel is based on the channel
  • the status information reference signal CSI-RS updates the radio resource management set.
  • the category of the scenario in which the heterogeneous network is located can be identified, and different radio resource management modes are adopted according to the scenario category, thereby implementing mobility management in a heterogeneous network in which multiple scenarios are mixed.
  • the determining module may further determine whether the macro node corresponding to the neighboring node is a primary serving macro node of the terminal device, and further determine a macro corresponding to the neighboring node when the determination result is timed. Whether the node has an interface with the primary service macro node of the terminal device, the above update module performs the above-mentioned radio resource management set update based on the channel state information reference signal CSI-RS only when the interface exists.
  • the present invention may also be that the scenario determined by the above-mentioned judging module is the scenario 4 in the 3GPP partner project 3GPP.
  • the present invention may also have a signal quality measurement management module, and the signal quality measurement management module determines whether the signal quality of the primary serving node of the user terminal is lower than a predetermined threshold, and determines whether the signal quality of the primary serving node is lower than When the threshold is specified, the radio resource management set is updated.
  • the present invention may also have a CoMP management module, and the CoMP management module selects a plurality of adjacent nodes for multi-point cooperation according to the radio resource management set updated based on the channel state information reference signal CSI-RS. Transmitting a set of nodes of CoMP, thereby judging multi-point coordinated transmission of CoMP operations according to channel state information CSI fed back from neighboring nodes in the node set
  • the present invention may also be a signal measurement method for measuring signals in a heterogeneous network composed of a macro node and a micro node, characterized by comprising: a retrieval step of retrieving a neighbor adjacent to the terminal device in a database
  • the scene information of the node, the scene information includes at least node composition and node identifier information in a scene in which the neighboring node is located; and a determining step of determining, according to the retrieval result of the searching step, whether the neighboring node belongs to multiple nodes a scenario having the same cell identifier, an updating step, when the
  • the present invention identifies a category of a scenario in which the heterogeneous network is located, and uses different radio resource management methods to update the RRM measurement set according to the scenario category, and performs CoMP operation or mobile switching on the basis of the updated RRM measurement set, thereby implementing cross CoMP and mobility management of the scene.
  • it is possible to identify the category of the scenario in which the heterogeneous network is located, and adopt different radio resource management modes according to the scenario category, thereby implementing mobility management in a heterogeneous network in which multiple scenarios are mixed, and improving mobility measurement.
  • Fig. 1 is a diagram showing the internal structure of a macro base station (macro TP) in a heterogeneous network according to the first embodiment.
  • macro TP macro base station
  • FIG. 2 is a diagram showing an example of user information stored in a central control unit.
  • Fig. 3 is a diagram showing an example of TP information stored in the center control unit.
  • Fig. 4 is a diagram showing an example of macro base station X2 information stored in the center control unit.
  • Figure 5 is a schematic illustration of adjacent TP information stored in a central control unit.
  • Figure 6 is a schematic illustration of signal quality information stored in a central control unit.
  • Figure 7 is a schematic diagram of RRM measurement set information stored in the central control unit.
  • Figure 8 is a diagram showing the internal structure of a micronode RRH connected to a base station through an optical interface.
  • Fig. 9 is a flowchart showing the configuration of an RRM measurement set according to the first embodiment.
  • Fig. 10 is a block diagram showing the internal structure of a macro base station (macro TP) in the heterogeneous network according to the second embodiment.
  • macro TP macro base station
  • Figure 11 is a diagram showing an example of CoMP measurement set information stored in the central control unit.
  • Fig. 12 is a diagram showing an example of channel state information stored in the center control unit.
  • FIG. 13 is a flowchart showing signal quality measurement management based on CRS/CSI-RS.
  • Fig. 14 is a view showing the overall flow chart of the center control unit according to the second embodiment.
  • Fig. 15 is a flowchart showing CoMP management according to the second embodiment.
  • Fig. 16 is a flowchart showing mobility management according to the second embodiment.
  • Figure 17 is a typical signaling interaction diagram of the central controller and user of each BS.
  • FIG. 18 is a schematic structural diagram of a typical heterogeneous network scenario (Scenario 3) with independent cell IDs.
  • Figure 19 is a schematic diagram of a typical heterogeneous network scenario (Scenario 4) with multiple nodes having the same cell ID.
  • FIG. 20 is a schematic diagram of a mixed scenario of a heterogeneous network across base stations composed of scenario 3 and scenario 4. detailed description
  • FIG. 1 is a schematic diagram showing the internal structure of a macro base station (macro TP) in a heterogeneous network composed of a macro node and a micro node according to the first embodiment.
  • the components related to the update of the RRM measurement set are mainly shown.
  • reference numeral 1101 in Fig. 1 denotes a macro base station (base station) 1 to N (Macro eNB, macro TP) of a certain scene in a heterogeneous network.
  • Each macro base station 1 ⁇ can be connected to other macro base stations via the ⁇ 2 interface 1108.
  • the ⁇ 2 interface 1108 is a standard interface between base stations.
  • each of the macro base stations 1 to ⁇ is also connected to each of the micro nodes under the optical interface 1107, and the optical interface 1107 is an interface between the micro nodes included in the respective ranges of the base stations 1 to ⁇ .
  • the micro node in Fig. 1 is a radio frequency pull unit (RRH, micro TP) 1102 for explanation.
  • the internal structure of the macro base station 1 ⁇ N is the same.
  • the internal structure of the base station will be described using the base station 1 as an example.
  • the base station 1 in addition to the X2 interface 1108 and the optical interface 1107, the base station 1 further includes: a central control unit 1103, a user data buffer 1104, a baseband signal processing 1105, and a radio frequency module 1106.
  • the user data cache 1104 is configured to store user data to be sent.
  • Baseband signal processing 1105 is used for a series of baseband processing such as modulation and coding of received user plane data and control plane signaling.
  • the radio frequency module 1106 is configured to perform high frequency modulation on the received baseband signal and then transmit it out from the antenna. These can be achieved using conventional conventional means.
  • the central control unit 1103 controls the macro base station and the micro nodes under it, including the memory And the processor, which is responsible for data storage and algorithms related to radio resource control, respectively.
  • the first embodiment focuses on parameters and processing modules related to the update function of the RRM measurement set.
  • TP information 11032 Stored in the memory of the central control unit 1103 are: user information 11031, TP information 11032, macro base station X2 information 11033, adjacent TP information 11034, signal quality information 11035, and RRM measurement set information 11036.
  • This information can be stored in one storage unit or separately in multiple storage units. Also, let this information be updated in real time during each scheduling cycle. The main contents of each information are explained in detail below.
  • FIG. 2 is an exemplary diagram of user information 11031.
  • the entries included in the user information 11031 are: UE ID 40310, status 40311, priority 40312, and primary service TP ID 40313.
  • the UE ID 40310 is an identifier for identifying a user for distinguishing different users in the network.
  • State 40311 represents the current state of the user represented by UE ID 40310. There are three possible states: Shutdown/Idle/Connect.
  • the priority 40312 stores the scheduled priority information P of each user in correspondence with the UE ID 40310.
  • the priority calculation method uses a proportional fairness algorithm.
  • the specific calculation method of the priority parameter of a user k is as follows: TI PF (k) + ⁇ is the instantaneous transmission rate of the scheduling moment, and the average transmission rate of the user k in the past period of time.
  • TI PF (k) + ⁇ is the instantaneous transmission rate of the scheduling moment, and the average transmission rate of the user k in the past period of time.
  • TI PF (k) + ⁇ is the instantaneous transmission rate of the scheduling moment, and the average transmission rate of the user k in the past period of time.
  • TI PF (k) + ⁇ is the instantaneous transmission rate of the scheduling moment, and the average transmission rate of the user k in the past period of time.
  • a priority algorithm is an example of a priority algorithm. Of course, other algorithms can also be used to determine the priority.
  • the primary service TP ID 40313 is an identifier of the node TP that provides control signals for the user represented by the UE ID 40310. For example, in Figure 2, the connection status of the user whose UE ID is UE1 is displayed as "connection”, its priority is P1, and the ID of the primary service TP is "TP1".
  • FIG. 3 is an exemplary diagram of TP information 11032.
  • the entries included in the TP information 11032 are: TP ID 40320, primary cell ID 40321, base station ID 40322, and scenario 40323.
  • TP ID 40320 is an identifier used to identify each TP in the network.
  • the primary cell ID 40321 is an identifier for identifying the cell in which the node shown by the TP ID 40320 is located.
  • the overlapping regions are identified by using different cell IDs according to the corresponding different nodes, and therefore, the primary node Or a micro node, each TP ID corresponds to a different cell ID (cell ID), and the TP ID has a one-to-one correspondence with the cell ID.
  • the base station ID 40322 is an identifier for identifying the base station to which the node indicated by the TP ID 40320 belongs, that is, the base station.
  • the scene 40323 is a heterogeneous network scenario to which the base station ID 40322 belongs (here, it is set to scene 3 or scene 4 in 3GPP).
  • the composition of the heterogeneous network out of the TP and the type of the scene can be known.
  • the cell IDs corresponding to TP1, ⁇ 2, ⁇ 3, and ⁇ 4 of the first to fourth items in FIG. 3 are different, but the corresponding base station IDs are the same, and therefore belong to the same scenario 3 cell.
  • the TP8 and ⁇ 9 of the last two numbers correspond to the same cell ID "cell ID6", and the corresponding base station IDs are also the same, and therefore belong to the cell of the same scenario 4.
  • the macro base station X2 information 11033 stores ID information of other base stations having an X2 connection with each base station, and the entries included are: a base station ID 40331 and a plurality of connected base station IDs 40332.
  • the base station ID 40331 is an identifier for identifying a base station (master node).
  • the plurality of connected base station IDs 40332 are identifiers of base stations having an X2 interface with the base station ID 40331.
  • Figure 5 is a schematic diagram of adjacent TP information 11034.
  • the neighboring TP information 11034 stores the information of the neighboring TP of each TP, and the entries included are: TP ID 40340 and multiple neighboring TP IDs 40341.
  • TP ID 40340 is an identifier for identifying a node.
  • a plurality of neighbor TP IDs 40341 are identifiers of adjacent TPs adjacent to TP ID 40340.
  • the "adjacent node” in the present invention distinguishes adjacent nodes adjacent to a specific TP from adjacent nodes adjacent to a mobile terminal.
  • the adjacent node adjacent to the mobile terminal refers to a node within a predetermined range from the device of the user terminal, and the predetermined range can be arbitrarily set as needed. Therefore, it is possible to determine a neighboring node of a user who is temporarily associated with the specific TP, which will be described later, based on the adjacent TP adjacent to the specific TP shown in FIG. In addition, other methods or range criteria may of course be used to determine neighboring nodes adjacent to the mobile terminal.
  • the adjacent TP information table shown in Fig. 5 is employed.
  • N TPs there are a total of N TPs in the network, and the number of neighboring TPs that can be configured for each TP is N-1.
  • These adjacent TPs are stored in advance in the database of the base station.
  • these neighboring TPs are candidates within the coverage of the TP ID 40340, and the UE can perform candidate TP as a signal quality measurement as a TP adjacent to the UE. That is, even if the UE passes through the cell Searching, the RS signal corresponding to a certain cell ID is detected.
  • the primary service TP and the adjacent TP are fixed to form a TP corresponding to the RRM measurement set. That is to say, the maximum value of the number of TP corresponding to the RRM measurement set is ⁇ .
  • the TP included in the RRM measurement set can be semi-statically or dynamically updated according to the operation and maintenance status of the network.
  • FIG. 6 is a schematic diagram of signal quality information 11035.
  • the signal quality information 11035 stores the signal quality (RSRP/RSRQ) of the primary service TP and the neighbor TP measured by each user (mobile terminal), and the entries included are: UE ID 40350, primary TP ID/quality 40351, And multiple neighbor TP IDs/quality 40352.
  • the UE ID 40350 is an identifier that identifies the mobile terminal and is used to distinguish different users in the network.
  • the primary TP ID/quality 40351 is the identifier of the current primary service TP of the mobile terminal indicated by the UE ID 40350 and the signal quality value of the primary service TP measured by the mobile terminal, where the signal quality is defined as the RSRP/RSRQ value.
  • the plurality of neighbor TP IDs/quality 40352 are identifiers of neighboring TPs adjacent to the user and signal quality values of the neighboring TPs measured by the user.
  • the adjacent TP shown in FIG. 5 is used as the adjacent TP in FIG. 6, and the adjacent TP is determined based on the user's primary serving node.
  • the signal quality is defined as the RSRP/RSRQ value.
  • the signal quality values of the respective nodes corresponding to the users of different primary serving nodes are shown in FIG.
  • FIG. 7 is a schematic illustration of RRM measurement set information 11036.
  • the RRM measurement set information 11036 stores the RS resource configuration corresponding to the TP corresponding to the RRM measurement set configured for each user, and includes the following items: UE ID 40360, primary TP RS configuration 40361, and multiple neighbor TP RS configurations.
  • the UE ID 40360 is an identifier that identifies the mobile terminal and is used to distinguish different users in the network.
  • the primary TP RS configuration 40361 shows the RS information configuration category of the user's primary TP represented by the UE ID 40360. If the primary TP belongs to scenario 3, the CRS configuration corresponding to its Cell ID and frequency offset is used. If the primary TP belongs to scenario 4, the CSI-RS configuration is used. The specific configuration information will be described later.
  • the multiple neighbor TP RS configurations indicate the RS information configuration of the neighboring TPs of the corresponding TPs. If the neighboring TP belongs to scenario 3, the CRS corresponding to its Cell ID and frequency offset is used. Set. If the neighbor TP belongs to scenario 4, the CSI-RS configuration is used. The specific configuration information will be described later.
  • the respective information stored in the central control unit 1103 is described in detail above.
  • the processor of the central control unit 1103 operates by executing the RRM measurement set update flow.
  • an RRM measurement set update control unit 11037 for performing an update of the RRM measurement set is included. This RRM measurement set update control unit 11037 corresponds to the "signal measurement device" in the present invention.
  • the RRM measurement set update control unit 11037 includes: a retrieval unit 110371, a determination unit 110372, and an update unit 110373.
  • the searching unit 110371 searches for the neighboring TPs corresponding to the mobile terminal main service TP in the adjacent TP information 11034 according to the ID of the primary service node corresponding to the user indicated by the user information 11031 in FIG. 2, as the adjacent phase with the terminal device. Neighboring nodes, and retrieving the scene information of the neighboring nodes adjacent to the terminal device in the scene category retrieval database of each neighboring node in the TP information 11032, and providing the identifier of the neighboring node and the scene category to be provided as scene information.
  • the determining unit 110372 determines the unit 110372.
  • the judging unit 110372 is for judging the state of the adjacent TP retrieved by the retrieving unit 110371. Specifically, it is determined for each neighboring node whether the node belongs to the scenario 4.
  • the feature of scenario 4 is that multiple nodes have the same cell identifier.
  • the determining unit 110372 may further determine whether the macro node corresponding to each neighboring node is the primary serving macro node of the terminal device, that is, whether the primary serving node of the mobile terminal and the neighboring node belong to the same cell, and further determine whether the result is timing or not. Whether there is an X2 connection between the macro node corresponding to the neighboring node belonging to the same cell of the primary serving node of the mobile terminal and the primary base station of the cell to which the primary serving node of the terminal device belongs (herein referred to as: the primary serving macro node), Here, it is judged whether or not there is an X2 connection by judging whether or not the base station N is connected through the X2 interface 1108.
  • Update unit 110373 is used to update the RRM measurement set.
  • the actions that can be performed include: configuring and updating the RRM measurement set along with the CRS resource, configuring the CSI-RS resource by the neighboring base station and updating the RRM measurement set, configuring the CSI-RS resource by the primary base station, updating the RRM measurement set, and not ignoring the neighbor TP The RRM measurement set is not updated.
  • the updating unit 110373 updates the radio resource management set based on the cell-specific reference signal CRS when the determining unit 110372 determines that the scenario is negative, and based on the channel state information reference signal CSI when the determining unit 110372 determines that the scenario is positive.
  • -RS updates the radio resource management set.
  • the update unit 110373 The radio resource management set update based on the channel state information reference signal CSI-RS is performed only when it is determined that there is an X2 interface connection between the base station to which the adjacent node belongs and the base station to which the mobile terminal belongs.
  • Figure 8 is a diagram showing the internal structure of a micronode RRH 1102 connected to a base station via an optical interface 1107.
  • the micro node RRH 1102 has a frequency converter 502 that performs spectrum shifting on the baseband signal 501 transmitted from the base station through the optical fiber, and in the downlink direction, the baseband signal is converted into a frequency band signal by frequency conversion, and is converted into a frequency band signal in the uplink direction.
  • the frequency band signal is made into a baseband signal;
  • the analog to digital converter 503 converts the digital signal into an analog signal in the downlink direction, and converts the analog signal into a digital signal in the uplink direction;
  • the filter 504 filters out certain frequency components from the signal.
  • power amplifier 505 power amplification of the signal to meet the transmission power requirement; duplexer 506, to isolate the transmitted and received signals to ensure that both can work normally; and antenna 507, transmitting and receiving wireless signals .
  • Fig. 9 is a flowchart showing the configuration of an RRM measurement set according to the first embodiment.
  • the retrieval unit 110371 reads the neighbor TP information 11034, and traverses the neighboring TP corresponding to the primary service TP of the UE. (Step 701).
  • the retrieval unit 110371 retrieves the TP information 11032 and finds the scene of the neighboring TP (step S702). In step 703, it is determined whether the scene to which the adjacent TP belongs is the scene 4. If the determination is "No", that is, a scene belonging to a plurality of nodes having the same cell identifier, then go to step 706 to update the RRM measurement set using the CRS-based signal quality measurement (step 7010). If the determination is "Yes", then go to step 704.
  • the determining unit 110372 determines whether the neighboring TP belongs to a base station different from the primary serving base station of the UE.
  • the determining method is: determining, according to the base station ID 40322 in the TP information 11032, the base station ID corresponding to the TP ID 40320 of the primary service TP of the UE and the base station ID corresponding to the TP ID 40320 of the adjacent TP. If the two are the same, the determination is "NO". Go to step 709, the base station configures the CSI-RS resource for the neighboring TP, so that the updating unit 110373 updates the RRM measurement set (step 7010). When the two are different, the determination is "Yes", and the flow proceeds to step 705.
  • the retrieval unit 110371 retrieves the macro base station X2 information 11033, and determines with the main The base station 40331 has a plurality of neighboring base stations 40332 connected by X2, and includes the base station corresponding to the neighboring TP. If not, the process goes to step 708, ignoring the neighboring TP, and the UE will no longer measure the signal quality of the TP, that is, The CSI-RS resources corresponding to the TP are no longer configured in the RRM measurement set, and thus the update of the RRM measurement set is not performed. If yes, go to step 707.
  • the RRM measurement set update module 11037 of the neighboring base station configures the CSI-RS resource for the neighboring TP, so that the update unit 110373 updates the RRM measurement set (step 7010).
  • step 701 the next adjacent TP is traversed.
  • the central control unit 1103 is explained as an internal configuration of the base station, but the portion related to the signal measurement in the central control unit may be separately configured as a signal measuring device, or embedded in a server connected to the base station or the like. Implement it.
  • the ⁇ 2 interface is used, and the optical interface is used as an interface between the macro base station and the micro node under it, but of course the type of the interface is not limited.
  • other interface categories can also be used.
  • the apparatus and method for measuring signals in a heterogeneous network mixed with different scenarios are illustrated by using scenario 3 and scenario 4 in 3GPP as an example, but other existing communication standards may also be used.
  • the scenario, or the scenario in which a new communication standard occurs in the future can be implemented as long as the scenario in which multiple nodes have the same cell identifier in the standard and the scenario in which multiple nodes have different cell identifiers are defined.
  • the present invention can be implemented even when a part of nodes in a cell share one cell identifier. In this case, a cell in which a part of nodes share a cell identifier is regarded as a scenario 4, that is, can.
  • step 704 it is determined in step 704 whether the neighboring node belongs to the base station of the same cell as the primary serving node of the terminal, and in order to determine the connection relationship between the base stations.
  • the macro base station X2 information 11033 is stored, and in step 705, the state of the X2 connection is determined.
  • the above steps can also be omitted.
  • the order of the respective judging steps is not limited to the order in Fig. 9, and it is possible to first judge whether or not there is an interface and then judge the scene, and the like, and execute the flow in different judgment orders.
  • the volume device is also capable of expanding a variety of services based on the update of the RRM measurement set, thereby implementing diverse services based on scene determination.
  • Fig. 10 is a block diagram showing the internal structure of a macro base station (macro TP) in the heterogeneous network according to the second embodiment.
  • macro TP macro base station
  • the macro base station (macro TP) in the second embodiment is different from the first embodiment in that, in addition to the constituent elements related to the RRM measurement set update, there are other extensions for performing the update result based on the RRM measurement set.
  • the constituent elements of the business will be described in detail with reference to the first embodiment, and the description of the first embodiment will be omitted in the same manner as the first embodiment, and the detailed description will be omitted.
  • the base station 1 has an X2 interface 408, an optical interface 407, a central control unit 403, a user data buffer 404, a baseband signal processing 405, and a radio frequency module 406.
  • the structures and functions of the X2 interface 408, the optical interface 407, the user data buffer 404, the baseband signal processing 405, and the radio frequency module 406 are the same as those of the first embodiment, and thus detailed descriptions are omitted.
  • the central control unit 403 of the present embodiment controls the macro base station and its associated micro-nodes, including a memory and a processor, which are respectively responsible for data storage and algorithms related to radio resource control.
  • the memory stores: user information 4031, TP information 4032, macro base station X2 information 4033, adjacent TP information 4034, signal quality information 4035, RRM measurement set information 4036, CoMP measurement set information 4037, and channel state information 4038. This information is updated in real time during each scheduling cycle.
  • the TP information 11032, the macro base station X2 information 11033, the adjacent TP information 11034, the signal quality information 11035, and the RRM measurement set information 11036 are respectively the same, and therefore the contents of the first embodiment are cited, and the detailed description is omitted.
  • Fig. 11 is a diagram showing an example of CoMP measurement set information 4037 stored in the center control unit.
  • the CoMP measurement set information 4037 stores the RS corresponding to the TP in the CoMP measurement set configured for each CoMP user.
  • the base station configures the CoMP measurement set for each CoMP user based on the CoMP measurement set information 4037.
  • the CoMP measurement set information 4037 includes entries: UE ID 40370, primary TP RS configuration 40371, and multiple neighbor TP RS configurations 40372.
  • the UE ID 40370 is an identifier for identifying a user for distinguishing different users in the network.
  • the primary TP RS configuration 40371 represents the CSI-RS configuration used by the primary TP for CSI measurements.
  • Multiple Neighbor TP RS configurations 40372 represent CSI-RS configurations used by the Cooperative TP for CSI measurements.
  • Figure 12 is a diagram showing an example of channel state information 4038 stored in the central control unit.
  • Channel state information 4038 stores CSI (Channel State Information) information for each CoMP user.
  • the CSI includes a PMI (Precoding Matrix Indicator), an RI (Rank Indicator), and a CQI (Channel Quanlity Indicator).
  • PMI Precoding Matrix Indicator
  • RI Rank Indicator
  • CQI Channel Quanlity Indicator
  • the simplest and most intuitive method is based on feedback from each CSI-RS resource (users can separately feed out CSI information for different CSI-RS resources).
  • CSI-RS resources In order to make the base station get more accurate feedback results, implement related CoMP operations, there are some more advanced CSI feedback methods. For example, feedback across CSI-RS resources (in addition to separately feeding out CSI information for different CSI-RS resources, the user also feeds back the phase information of each CSI-RS resource for JT: Joint Transmission operation) and aggregates CQI. Feedback (users can separately feed out CSI information for different CSI-RS resources, and also feed back CQI information with multiple TPs for JT operations as hypothetical CQI information for base station side), aggregate feedback (users configure for it) The CSI-RS resource estimates the channel, performs joint quantization and feedback, and feeds back an aggregated CSI information).
  • the channel status information 4038 includes entries: UE ID 40380, primary TP channel status information 40381, and a plurality of cooperative TP channel status information 40382.
  • the UE ID 40380 is an identifier that identifies the user and is used to distinguish different users in the network.
  • the primary TP channel status information 40381 indicates the primary TP measured by the UE and the CSI (Channel State Information).
  • the CSI includes an RI (Rank Indicator) and a PMI (Precoding Matrix Indicator).
  • CQI Channel Quality Indicator
  • the cooperative TP channel state information 40382 represents the cooperative TP measured by the UE and the CSI between it.
  • the processor acts by executing a business process that can be provided.
  • the mobility management unit 4039, the CRS/CSI-RS based signal quality measurement management unit 40310, and the CoMP management are further included.
  • the main function of the CRS/CSI-RS based signal quality measurement management unit 40310 is based on the scene and location of each UE.
  • the adjacent TP information, the RRM measurement set is configured and the UE is guided to perform the signal quality measurement process. Therefore, the RRM measurement set update control unit described in the first embodiment is also included (not shown in FIG. 10).
  • the RRM measurement set update control unit can also serve as a separate module in the central control unit. Again for convenience, the RRM measurement set update control unit is not shown as an internal constituent module of the CRS/CSI-RS based signal quality measurement management unit 40310.
  • the CoMP management unit 40311 calculates the quality of the received signal of each cell edge user, configures a CoMP measurement set for the user that meets the CoMP requirement, and instructs the UE to perform channel state information measurement. Specifically, according to the radio resource management set updated based on the channel state information reference signal CSI-RS, a node set for multi-point cooperative transmission CoMP is selected from a plurality of neighboring nodes, thereby according to neighboring nodes in the slave node set.
  • the fed back channel state information CSI determines the type of coordinated multi-point CoMP operation. The detailed method will be described later.
  • the mobility management unit 4039 performs a corresponding mobility operation for the user who meets the handover or cell reselection condition by calculating the received signal quality difference of each cell edge user. Specifically, according to the updated radio resource management set, the signal quality difference between the primary serving node and each neighboring node is calculated, and the primary serving node is switched according to the calculated signal quality difference. The detailed method will be described later.
  • Figure 13 is a flow chart showing signal quality measurement management based on CRS/CSI-RS.
  • the CRS/CSI-RS based signal quality measurement management unit 40310 traverses the user information 4031, and calls the user in the idle/connected state in order of priority (step 601).
  • the RRM measurement set information 4036 of these users is retrieved (step 602). It is judged whether the user's RRM measurement set contains only the RS configuration of the primary service TP (step 603). When the judgment result is "No”, the current user is ended and the next user is traversed. When the result of the determination is "YES", the process proceeds to step 604.
  • step 604 user signal quality information 4035 is read to obtain signal quality information.
  • step 604 it is judged whether the signal quality is lower than the specified neighbor set measurement threshold TN (step 604). When the judgment result is "No”, the current user is ended and the next user is traversed. When the result of the determination is "YES”, the process proceeds to step 606.
  • step 606 the RRM measurement set configuration described in the first embodiment is performed, and the RRM measurement set of the UE is configured according to the flow shown in FIG. 9, and thus detailed description is omitted here.
  • step 607 an RRM measurement set configuration message is sent to the user. The specific format of the message will be described later.
  • the signal quality information of the corresponding RRM measurement set reported by the UE is received (step 608). The specific format of the message will be described later.
  • the signal quality information 4033 is further updated in accordance with the signal quality information (step 609).
  • FIG. 14 shows a general flow chart of the center control unit according to the second embodiment.
  • CoMP management is entered (step 1202), which is an optional process. This process is performed for users who meet the CoMP criteria. The specific method will be described later.
  • mobility management is performed (step 1203). This item is also an optional process. This process is performed for users who are meeting mobility management. The specific method will be described later.
  • Fig. 15 is a flowchart showing CoMP management according to the second embodiment.
  • the CoMP management unit 40311 reads the signal quality information 4035, calculates the signal quality difference between the neighboring TP and the primary serving TP for all UEs in the connected state, and does not operate the UE in the non-connected state (step 801). .
  • a TP set corresponding to the CoMP measurement set is determined.
  • the methods and criteria for specific decisions can be defined in advance. For example, when the difference between the RSRP/RSRQ value of a neighboring TP and the primary service TPRSRP/RSRQ value is less than the CoMP threshold Tc, the TP is added to the corresponding TP set of the CoMP measurement set. Or define a measurement set size 8 in advance. The S-1 TPs whose signal quality is second only to the primary service TP are added to the TP set corresponding to the CoMP measurement set. Either meet the CoMP threshold Tc and the limit of the measurement set size S.
  • the CSI-RS resources are configured for the above TP set to form CoMP measurement set information and notify the UE (step 804).
  • the CoMP management unit 40311 searches for the X2 connection of the base station to which the neighboring TP belongs to the serving base station based on the macro base station X2 information 4033. If the X2 connection does not belong to the same base station, the CSI-RS resource requirement information is sent to each neighboring base station to which the neighboring TP belongs, and the CSI-RS resources dynamically configured by the neighboring base stations for the TP are obtained. Thereby updating the CoMP measurement set information. If they belong to the same base station, allocate corresponding CSI-RS resources to the corresponding TP in the base station. To update the CoMP measurement set information. After updating the CoMP measurement set information, the CoMP measurement set is notified to the UE. Next, the signal status information (CSI) from the CoMP measurement set fed back by the UE is received (step 805), and the signal status information 4038 is updated according to the signal status information (CSI) (step 806).
  • CSI signal status information
  • the CoMP transmission strategy decision is made. Specifically, based on the feedback CSI information, it is determined which CoMP operation is used for the user. For example, JT (Joint Transmission), DPS/DPB (Dynamic Point Selection/Dynamic Point Blanking), CS/CB (Coordinated Scheduling/Coordinated Beamforming, Coordinated Scheduling/Coordinated Beamforming) Molding, etc. (step 807).
  • the user is subjected to a CoMP operation according to the CoMP transmission policy decision (step 808).
  • Fig. 16 is a flowchart showing mobility management according to the second embodiment.
  • the mobility management unit 4039 reads the signal quality information 4035. For all UEs in the connected or idle state, the signal quality difference between the neighboring TP and the primary serving TP is calculated, and for the UE in the non-connected or idle state (ie, the UE in the shutdown state), no operation is performed (step 901).
  • step 902 It is judged whether the difference satisfies the handover or cell reselection threshold (step 902). If the difference satisfies the handover or cell reselection threshold, the process proceeds to step 903. Otherwise it ends.
  • step 903 a handover (for the UE in the connected state) or a cell reselection (for the UE in the idle state) process is performed.
  • the timing diagram of signal quality measurement management, CoMP management, and mobility management based on CRS/CSI-RS is integrated to illustrate the signaling interaction status in the network.
  • Figure 17 is a typical signaling interaction diagram of the central controller and user of each BS.
  • the UE receives a reference signal from each TP. And the UE periodically transmits a measurement report to its primary service TP, and then performs processing in the central controller of the primary serving base station (step 1002).
  • the measurement report message includes channel quality information of the UE and its primary serving TP and neighbor cell TP.
  • the central controller begins the CRS/CSI-RS based signal quality management process.
  • the first is the neighbor set measurement decision process, and it is judged whether the signal of the main service TP is lower than a certain degree, and the measurement of the neighbor set is required (step 1003). If yes, the process proceeds to step 1004.
  • Step 1004 is the RRM measurement set configuration process described in the first embodiment.
  • step 10041 the central controller BS1 determines the type of the scene of the adjacent TP according to the flowchart of FIG. 9, determines whether it belongs to the scene 4, and whether the TP belongs to a different base station and has an X2 connection.
  • the source base station (the base station to which the primary serving TP belongs) transmits a CSI-RS configuration request message to the target base station (the base station to which the neighboring TP belongs).
  • the CSI-RS Configuration Request message is a message type newly defined in the present invention to support CSI-RS based signal quality measurement. Transmitted between base stations via the X2 interface.
  • CSIRS_Resource Configuration Request is shown in Table 2.
  • the central controller of the target base station begins configuring CSI-RS resources for signal quality measurements for the respective TPs.
  • the related information contained in each CSI-RS resource is shown in Table 3.
  • X2AP CSIRS—Resource Configuration Request Acknowledgement, Table 4,
  • the RRM measurement set information is updated. Examples of RRM measurement set information are shown in Table 5.
  • RRM RRM measurement set size (does not exceed the system-defined maximum)
  • CRS Resource The number of CRS resources used for RRM measurements (equal to CRS based)
  • CRS based cell ID uses CRS to perform RRM measurement of the cell ID corresponding to each TP.
  • List list each element in the list is a cell ID, UE pass
  • CSI-RS Resource Number of CSI-RS resources used for RRM measurements (equal to
  • Non-zero power uses CSI-RS for RRM measurement of each TP assignment
  • CSI-RS List CSI-RS resource list, each element in the list is
  • the central controller sends an RRM measurement set configuration message.
  • the UE may be notified by transmitting an RRM Measurement Set information element through an RRC layer message.
  • the UE periodically transmits the measurement report to its primary serving TP according to the RRM measurement set configuration message, and then performs processing in the central controller of the primary serving base station.
  • the measurement report message includes channel quality information of the UE and its primary serving TP and neighbor cell TP.
  • the relevant information in the IE (Information Element) MeasResults is shown in Table 6.
  • the source base station central controller updates the signal quality information 4035.
  • a CoMP decision is made in accordance with steps 801 to 802 in the flowchart shown in FIG.
  • the CoMP measurement set configuration is performed in accordance with the other steps in the flowchart shown in FIG. If the TP that satisfies the CoMP condition belongs to the neighboring base station and has the X2 connection, the processing of steps 10091 to 10093 is completed. Otherwise, the CoMP measurement set configuration will be completed in the base station.
  • the source base station (the base station to which the primary serving TP belongs) transmits a CSI-RS configuration request message to the target base station (the base station to which the neighboring TP belongs). Used to support CSI-RS based CSI measurements across base stations. This message is sent between the base stations via the X2 interface.
  • the central controller of the target base station begins configuring CSI-RS resources for CSI measurements for the corresponding TP.
  • the related information contained in the CSI-RS resource is shown in Table 7.
  • step 10093 the source base station receives the CSI-RS configuration request response sent back by the target base station.
  • step 10094 the CoMP measurement set information is updated. The contents of the CoMP measurement set are shown in Table 8;
  • Table 8 Non-zero powsr uses CSI-RS to perform CSI measurement of each TP assigned CSI-RS CSI-RS List resource list, each element in the list is defined in 10092
  • a Non-zero power CSI-RS IE the central controller BS1 sends a CoMP measurement set configuration message to the UE.
  • the CSI-RS resource configured by the CoMP measurement set is notified to the UE through the RRC layer message.
  • step 1006 after the UE performs measurement according to the received CoMP measurement set configuration message, the UE periodically transmits a measurement report to its primary serving TP, and then performs processing in the central controller of the primary serving base station.
  • the measurement report message includes channel quality information of the UE and its primary serving TP and neighbor cell TP.
  • the UE feeds back signal status information.
  • the central controller BS1 updates the signal status information.
  • the central controller BS1 performs a CoMP transmission policy decision.
  • step 1014 multiple TPs perform CoMP transmission on the UE, thereby completing CoMP management.
  • the mobility management is entered, and in step 1015, the central controller BS1 performs a mobility decision. If the mobility condition is met, then step 1016 is performed.
  • Step 1016 is a mobility management process including steps 10161 and 10162.
  • the central controller BS1 transmits a handover/cell reselection request message to the central controller BS2 of the cell to be handed over.
  • the central controller BS2 returns a handover I cell reselection request completion message to the central controller BS1.
  • step 1017 the UE performs handover/cell reselection.
  • step 603 in order to save the process time of traversing the user information in FIG. 13, it is first determined in step 603 whether the RRM measurement set of the user only includes the RS configuration of the primary service TP, and if not only the RS configuration of the primary service TP is included, It is considered that an update of the RRM measurement set is not required. However, in order to improve the accuracy of the measurement, step 603 may be omitted, and each user's RRM measurement set is updated.
  • Table 9 The information table 10 in the TP information 4032 corresponding at this moment;
  • Table 10 The UE—signal quality is directly adopted by the reference signal CRS1 configured for the cdll: (RSRP/RSRQ) measurement.
  • the measurement report is sent to the network periodically, and is stored in the signal quality:
  • the information in the information 4035 is shown in Table 11.
  • the network instructs the UE to start the neighbor cell search process, and configures the RRM measurement set according to the process shown in FIG.
  • the network reads the adjacent TP information 4034 corresponding to the UE main service TP (TP1), as shown in Table 12:
  • the central controller determines the status of the neighboring TP and finds that TP6, ⁇ 7, and ⁇ 8 belong to the scenario 4, the TP information 4032 is read, and it is found that TP6, ⁇ 7, and ⁇ 8 belong to the BS2, and the TP1 belongs to a different base station.
  • the macro base station X2 information 4033 is read as shown in Table 13.
  • the central controller determines that there is an X2 interface between the base station BS1 and the base station BS2. Therefore, BS2 should configure CSI-RS resources for TP6, ⁇ 7, and ⁇ 8 for signal quality measurement.
  • BS1 transmits a CSI-RS configuration request message to BS2.
  • BS2 configures CSI-RS resources for TP6, ⁇ 7, and ⁇ 8, and sends CSI-RS configuration messages to BS1.
  • the network updates the RRM measurement set information of the UE and stores it in the RRM measurement set information, as shown in Table 14.
  • the primary serving node notifies the UE of the RRM measurement set configuration through the RRC message.
  • the UE starts to perform signal quality measurement according to the RS information included in the RRM measurement set and periodically transmits a measurement report to the network.
  • the signal quality information 4035 is updated, as shown in Table 15.
  • the central controller determines whether the UE should perform CoMP operation or handover according to the signal quality difference from the primary TP and the neighboring TP according to the flow of FIG. 15 and FIG. 16, respectively.
  • CoMP operations and switching operations are optional processes, both triggered by events and occur independently.
  • CSI-RS resources for measuring CSI are configured for TP1, ⁇ 7, and ⁇ 8. And start CoMP measurement. It is assumed that after a short measurement period (before the next RRM measurement set update), the signal quality changes.
  • the central controller instructs the UE to switch from TP1 to TP6.

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Abstract

La présente invention a pour objet de pourvoir à un dispositif de mesure de signal qui puisse réaliser une mesure de mobilité dans un réseau hétérogène composé d'un nœud macro et d'un nœud micro, et puisse améliorer la précision de mesure de signal en mesure de mobilité. Le dispositif de mesure de signal selon la présente invention est utilisé pour mesurer un signal dans un réseau hétérogène composé d'un nœud macro et d'un nœud micro, et est caractérisé en ce que le dispositif comprend : un module de récupération pour récupérer des informations de scénario concernant un nœud adjacent, qui est adjacent à un dispositif terminal, dans une base de données, les informations de scénario comprenant au moins des informations de composition de nœud et d'identificateur de nœud dans le scénario dans lequel le nœud adjacent se trouve ; un module de détermination pour déterminer si le nœud adjacent appartient ou non à un scénario dans lequel une pluralité de nœuds ont le même identificateur de cellule en fonction du résultat de récupération du module de récupération ; et un module de mise à jour pour mettre à jour un ensemble de gestion de ressources radio (RRM) sur la base d'un signal de référence spécifique de cellule (CRS) quand le résultat de détermination du module de détermination est négatif, et mettre à jour l'ensemble de gestion de ressources radio sur la base d'un signal de référence d'informations d'état de canal (CSI-RS) quand le résultat de détermination du module de détermination est affirmatif.
PCT/CN2013/085787 2012-11-14 2013-10-23 Dispositif de mesure de signal et procédé de mesure de signal WO2014075542A1 (fr)

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