JP6516392B2 - User equipment (UE), program, method, and computer readable recording medium - Google Patents

Description

  The present disclosure relates to coverage estimation for wireless cellular networks, and more particularly to coverage estimation for wireless cellular networks through user equipment (UE) idle mode measurements and reports.

  The accelerated adoption of smartphones, tablets and cloud computing is leading to the rapid growth of global mobile data traffic. The adoption of 3GPP Long Term Evolution (LTE) or LTE Advanced (LTE-A) wireless networks to provide increased capacity and functionality is an ongoing process. Network providers and operators typically deploy LTE, at least initially, in areas with relatively denser populations in an effort to reduce traffic congestion.

  The initial LTE deployment and coverage may thus be gaps in variables or coverage with discontinuities. The basic legacy radio access network, eg network supported Universal Mobile Telecommunications System (UMTS) and / or Pan-European Digital Mobile Telecommunications System (GSM®), may have multiple areas or areas where multiple LTE coverage holes exist. More basic coverage may be provided in the area of Network operators and providers generally increase their LTE coverage, eg, to plan objectives associated with the design and implementation of additional LTE base stations or evolved Node B (eNB) rollouts. Try to map the area. Some existing methods for coverage mapping involve driving a vehicle equipped with test equipment through a geographical area to collect signal measurements. However, this process is relatively time consuming and inefficient.

The features and advantages of the embodiments of the claimed subject matter will become more apparent as the following detailed description proceeds, and where like numerals indicate like parts. It will be clear by reference.
1 shows a top level diagram of one exemplary embodiment according to the present disclosure. 5 shows a flowchart of operations of an exemplary embodiment according to the present disclosure. 1 shows a block diagram of one exemplary embodiment according to the present disclosure. Fig. 6 shows a block diagram of another exemplary embodiment according to the present disclosure. Fig. 6 shows a block diagram of another exemplary embodiment according to the present disclosure. Fig. 6 shows a flowchart of the operation of another exemplary embodiment according to the present disclosure. While the following detailed description will proceed with reference to illustrative embodiments, many alternatives, variations, and modifications thereof will be apparent to those skilled in the art.

  In general, the disclosure provides devices, systems, and methods for improved coverage estimation of wireless cellular networks via user equipment (UE) idle mode measurements and reports. For example, UEs that may be moving within the vehicle are configured to detect LTE coverage holes associated with relatively weak or non-existent eNB signal reception areas. This technique provides an increased opportunity for coverage hole detection, as UEs may typically remain in idle mode for a relatively large percentage of the time they are powered. A potentially large number of UEs may report their idle mode measurements to the network manager through the network hierarchy, in addition to locations and timestamps. However, multiple measurements collected may be stored, analyzed, and / or correlated to generate multiple LTE coverage mappings with improved efficiency.

  FIG. 1 shows a top level diagram 100 of one exemplary embodiment according to the present disclosure. The wireless network is shown to include many cell base stations, multiple Node Bs (NBs) and multiple eNBs, and their associated multiple cell coverage areas. The NB 104 in cell 1 provides a UMTS or GSM® coverage area 102, and the NB in cell 2 provides a UMTS or GSM® coverage area 106. The UMTS cell may be part of a Universal Terrestrial Radio Access Network (UTRAN). The GSM cell may be part of a GSM Evolved High Speed Data Transmission (EDGE) Radio Access Network (GERAN). UMTS and / or GSM cells representing older, more established technologies may provide a relatively large basic coverage area. Multiple LTE eNBs 112, 114 and their associated multiple LTE coverage cells 110, 114 may be overlaid on this UMTS / GSM coverage area. Multiple coverage holes or gaps 118 may exist between multiple LTE cells.

  The UE 120 may move in or through the wireless network so that at various times, it may be from the NB 104 in Cell 1, the NB 108 in Cell 2, the eNB 112 in Cell 3, and the eNB 116 in Cell 4. In close range for signal reception. Although the UE 120 may be in idle mode, these signals may be received and processed as described in more detail later to detect multiple LTE coverage holes.

  This is a simplified example for the purpose of illustration, in which multiple eNBs, NBs, UEs and various types of cell coverage areas of arbitrary configuration are arranged It will be appreciated that it may also provide coverage that extends to any number of areas, regions or sectors. The wireless network conforms to the Third Generation Partnership Project (3GPP) Long Term Evolution (LTE) and / or LTE Advanced (LTE-A) based wireless network standards, including current, previous and future versions of that standard, and so Otherwise it may be compatible. These standards are described, for example, in 3GPP TS 25.304, V10.5.0, "User equipment (UE) procedures in idle mode and procedures for cell reselection in connected mode (release 10)," 3GPP TS 36. .300, VI 1.2.0, "Evolved Universal Terrestrial Radio Access (E-UTRA) and Evolved Universal Terrestrial Radio Access Network (E-UTRAN); General Description; Stage 2 (Release 11)", 3GPP TS 36 .331, VI 1.0.0, "Evolved Universal Terrestrial Radio Access (E-UTRA); Radio Resource Control (RRC); Protocol Specification (Release 11)".

  FIG. 2 shows a flowchart of operations 200 of an exemplary embodiment according to the present disclosure. At act 210, the discontinuous reception (DRX) cycle of the UE in idle mode ends. The UE may be configured with a timer that signals the end of the DRX cycle, at which point the following additional operations may be performed. At act 220, the reference signal received power (RSRP) of the serving cell of the UE is measured. At act 230, RSRP is compared to a threshold. The threshold may be selected to indicate the signal level at which the serving cell's signal strength is acceptable, and cell reselection may not be required. If RSRP exceeds the threshold, at act 295, the UE waits for the end of the next DRX cycle.

  Otherwise, at operation 240, a search is performed on a plurality of neighboring LTE cells. If an adjacent LTE cell is found, at act 250, the UE camps on that LTE cell. Otherwise, at operation 260, a search is performed on a plurality of adjacent inter-RAT (IRAT) cells. If an adjacent IRAT cell is found, at act 270, the UE camps on that IRAT cell. If neither an adjacent LTE cell nor an adjacent IRAT cell is found, then at operation 280, a log is created from RSRP, reference signal reception quality (RSRQ), and cell ID of the serving cell. The location and timestamp of the UE are also recorded. If a neighbor LTE cell or a neighbor IRAT cell is found, then at operation 290 a log is created from the RSRP, RSRQ, and neighbor cell ID. The location and timestamp of the UE are also recorded. Then, at operation 295, the UE waits for the end of the next DRX cycle.

  FIG. 3 shows a block diagram 300 of one exemplary embodiment according to the present disclosure. A network manager (NM) 302 is shown including a centralized capacity and coverage optimization (CCO) module 304. The operation will be described in more detail later. In some embodiments, CCO 304 may reside in element manager (EM) 308. Network manager 302 is typically a computer system and / or software application configured to provide and facilitate multiple network operators or providers with multiple network support functions. These support functions may include configuration management, performance monitoring, fault detection, and CCO operation. Determining capacity and coverage assists multiple network operators with design, planning, and rollout of multiple base stations (e.g., 3GPP LTE eNBs).

  Network manager 302 may be configured to communicate with multiple eNBs 310 (and / or IRAT NB 312) through a domain manager (DM) 306, which may include an element manager (EM) 308. The domain manager 306 may be configured to provide both element and domain management functions for the subnetwork, and the element manager 308 may be configured to associate a series of related types of network elements, such as eNB 310 of 3GPP and / or NB 312 of IRAT. It may be configured to provide a set of end user capabilities for management. The network manager 302 may be configured to communicate directly with the plurality of eNBs 310 (and / or NBs 312 of the plurality of IRATs) through the element manager 308 at the eNB or NB. In embodiments where CCO 304 resides in EM 308, CCO 304 may be configured to detect multiple LTE coverage holes in multiple eNBs within the domain of DM 306.

  The domain manager 306 provides the network manager 302 with type 2 interface 320, which may be a standardized interface, and type 1 interface 322, which may be a proprietary interface, to multiple eNBs 310 (and / or NB 312 of multiple IRATs) It may be configured to provide. The network manager 302 may be configured to communicate directly with multiple element managers 308 of multiple eNBs 310 (and / or NBs 312 of multiple IRATs) via a type 2 interface 320. Any message conversion that may be required between these two types of interfaces may be performed by the domain manager 306 and / or multiple element managers 308.

  FIG. 4 shows a block diagram 400 of another exemplary embodiment according to the present disclosure. UE 120 receives receiver 404 (and associated antenna 402), signal measurement module 408, DRX timer 406, cell search and selection module 422, recording module 414, UE positioning module 410, time module 412, report module 416, and transmission Device 418 (and associated antenna 420). In some embodiments, multiple antennas 402 and 420 may be common or shared antennas.

  Receiver 404 (and associated antenna 402) may be configured to receive multiple signals from an eNB or NB that may be associated with a UE or a serving cell of a neighboring cell. The DRX timer may be configured to indicate to the UE in idle mode the end of the DRX cycle time interval and to trigger a signal measurement by module 408. The signal measurement module 408 may be configured to measure RSRP of the serving cell of the UE and compare RSRP to a threshold. The threshold may be selected to indicate that the signal strength of the serving cell is acceptable and that cell reselection may not be required. Cell search and selection module 422 may be configured to search for neighboring cells in response to determining that RSRP is below the threshold and to cause the UE to camp on the neighboring cells if the search is successful. Cell search and selection module 422 may first be configured to search for LTE neighbor cells. If the LTE neighbor cell can not be found, the search may continue with the inter-RAT cell (eg, UMTS cell or GSM cell).

  Location module 410 may be configured to generate or estimate the position of the UE. The time module 412 may be configured to determine a time, eg, time, to use as a time stamp associated with multiple measurements by the UE.

  The recording module 414 records the log information associated with the neighbor cell if the search for the neighbor cell (performed by the module 422) is successful, and if the search for the neighbor cell fails, the log information associated with the serving cell May be configured to record. The recorded information may include RSRP, RSRQ, and cell ID of the neighbor or serving cell, depending on the success or failure of the search, respectively. The recorded information may further include the location and timestamp of the UE.

  The reporting module 416 may be configured to report the recorded information to the network manager's capacity and coverage optimization module. When the UE in idle mode is reconnected to the base station (eg, eNB or NB), the UE relays the report to the NM or EM via the transmitter 418 (and associated antenna 420) to the NM or EM. May be sent.

  FIG. 5 shows a block diagram 500 of another exemplary embodiment according to the present disclosure. The centralized CCO 304 of the network manager 302 is shown including a UE measurement results reception module 502, a UE measurement results analysis module 506, and a coverage hole identification module 508. In some embodiments, CCO 304 may include UE measurements database 504. The UE measurement results receiving module 502 may be configured to receive multiple measurements from one or more UEs in idle mode. The plurality of measurement results may be transmitted from the UE through the eNB or the NB. In some embodiments, the plurality of measurements may be further transmitted through a domain manager. The plurality of measurement results may be associated with the cell and may include the ID of the cell in addition to the RSRP and RSRQ. The plurality of measurement results may include the location of the UE and a timestamp.

  The UE measurement analysis module 506 may be configured to correlate the received UE measurements based on the locations of the plurality of UEs and any other suitable information. The coverage hole identification module 508 may be configured to identify and locate holes in the spatial coverage of the LTE wireless cellular network based on the analysis and the correlations. In some embodiments, CCO 304 may further store multiple received UE measurement results over a time interval associated with analysis of UE measurement results, or for any suitable historical age of interest. A configured UE measurement results database 504 may be included.

  FIG. 6 shows a flowchart of an operation 600 of an exemplary embodiment according to the present disclosure. At act 610, a measurement of reference signal received power (RSRP) of a serving cell of a user equipment (UE) is triggered. The UE is in idle mode and the trigger is associated with the end of the discontinuous reception (DRX) time interval. At act 620, it is determined whether the RSRP of the serving cell of the UE is below a threshold. At act 630, a search for neighboring cells is performed in response to determining that RSRP is below the threshold. At operation 640, if the search for the neighboring cell is successful, information associated with the neighboring cell is recorded. At act 650, if the search for neighboring cells fails, information associated with the serving cell is recorded.

  Embodiments of the methods described herein may be implemented in a system that includes one or more storage media, which may be implemented by one or more processors. Store multiple instructions to execute individually or in combination. Here, the processor may include, for example, a system CPU (for example, a core processor) and / or a programmable circuit. Thus, it is contemplated that operations in accordance with the methods described herein may be distributed across physical devices, such as processing structures at several different physical locations. Ru. Furthermore, as will be appreciated by those skilled in the art, it is contemplated that multiple acts of the method may be performed individually or in subcombinations. Thus, as will be appreciated by one skilled in the art, not all of the plurality of operations of each of the plurality of flowcharts need to be performed, and the present disclosure provides that all subcombinations of such plurality of operations are Clearly intended to be feasible.

  The storage medium may comprise any type of tangible media, for example any type of disc, which may be a floppy disc, an optical disc, a compact disc read only memory (CD-ROM), a compact disc rewritable (CD-RW), digital versatile disc (DVD) and magnetic optical disc, semiconductor device such as read only memory (ROM), random access memory (RAM) such as dynamic and static RAM, erasable programmable read only memory (EPROM) Electrical erasable programmable read only memory (EEPROM), flash memory, magnetic or optical card, or any type of media suitable for recording electronic instructions.

  A "circuit", as used in any of the embodiments herein, is implemented, for example, by a hardwired circuit, a programmable circuit, a state machine circuit and / or a programmable circuit, singly or in any combination. And firmware for storing the instructions of The application may be embodied as code or instructions that may be executed on a programmable circuit such as a host processor or other programmable circuit. The modules used in any of the embodiments herein may be embodied as a circuit. The circuit may be embodied as an integrated circuit, such as an integrated circuit chip.

  Thus, the present disclosure provides devices, methods, systems, and methods for improved coverage estimation of multiple wireless cellular networks, eg, multiple LTE networks, through user equipment (UE) idle mode measurements and reports. A computer readable storage medium is provided. The following examples relate to several further embodiments.

  The UE may include a signal measurement module that measures the reference signal received power (RSRP) of the UE's serving cell, and determines whether the UE is in idle mode and RSRP falls below a threshold. The UE in this example may search for a neighboring cell in response to the determination that RSRP falls below the threshold, and may include a cell search and selection module that camps on the neighboring cell if the search is successful. The UE in this example further records log information associated with the adjacent cell if the search for the adjacent cell is successful, and records data for the log information associated with the serving cell if the search for the adjacent cell fails. It may contain modules.

  Another exemplary UE includes the components described above and further includes a discontinuous reception (DRX) timer that triggers the signal measurement module to perform RSRP measurement and trigger at the end of the DRX time interval.

  Another exemplary UE includes the components described above, and further includes a location module that provides the location of the UE included in the log information, and a time module that provides a timestamp included in the log information.

  Another exemplary UE includes the components described above, and the log information includes RSRP, reference signal reception quality (RSRQ) and cell identification.

  Another exemplary UE includes the components described above, and the cell search and selection module further searches for neighboring long term evolution (LTE) cells, and the neighboring inter-radio communication access technology if the search for neighboring LTE cells fails. (IRAT) configured to search for cells.

  Another exemplary UE includes the components described above, and the IRAT cell includes a Universal Mobile Telecommunications System (UMTS) cell or a Pan-European Digital Mobile Telecommunications System (GSM®) cell.

  Another exemplary UE includes the components described above, and further includes a report module that reports log information to the network manager (NM) or element manager (EM) capacity and coverage optimization (CCO) module, and reporting Is done through the evolved Node B (eNB) in response to the UE reconnecting to the eNB.

  According to another aspect, a method is provided. The method may include triggering measurement of reference signal received power (RSRP) of a serving cell of a user equipment (UE) in idle mode at the end of a discontinuous reception (DRX) time interval. The example method may include determining whether the RSRP of the serving cell of the UE is below a threshold. The method of this example may further include the step of searching for neighboring cells in response to determining that RSRP is below the threshold. The method of this example may further include the step of recording the information associated with the neighbor cell if the search for the neighbor cell is successful. The example method may further include recording the information associated with the serving cell if the search for neighboring cells fails.

  Another exemplary method includes the process described above, wherein the log information includes RSRP, reference signal reception quality (RSRQ), cell identification, UE location, and timestamp.

  Another exemplary method includes the process described above, wherein searching for neighboring cells further comprises: searching for neighboring long term evolution (LTE) cells; and if the search for neighboring LTE cells fails, the neighboring inter-radio communication access Searching for technology (IRAT) cells.

  Another exemplary method includes the process described above, wherein the IRAT cell comprises a Universal Mobile Telecommunications System (UMTS) cell or a Pan-European Digital Mobile Telecommunications System (GSM (R)) cell.

  Another exemplary method includes the process described above, and further, the UE reconnects eNB with log information to a network manager (NM) or element manager (EM) capacity and coverage optimization (CCO) module. Accordingly, the step of reporting through evolved Node B (eNB) is included.

  Another exemplary method includes the process described above, and further includes, after recording, staying in an idle mode and waiting for the next trigger.

  Another exemplary method includes the process described above, and further includes camping on the neighboring cell if the search for the neighboring cell is successful.

  According to another aspect, a system is provided. The system may include a user equipment (UE) measurement result receiving module that receives multiple measurement results from multiple UEs in idle mode. The plurality of measurement results are associated with the cell and include cell ID, reference signal received power (RSRP), reference signal received quality (RSRQ), UE location, and timestamp. The example system may include a UE measurement analysis module that correlates the plurality of received UE measurements based on the locations of the plurality of UEs. The system of this example may further include a coverage hole identification module that identifies and locates holes in the spatial coverage of the Long Term Evolution (LTE) wireless cellular network based on the correlations.

  Another exemplary system may include the components described above, and may further include a UE measurement results database storing a plurality of received UE measurement results over time intervals associated with analysis of UE measurement results.

  Another exemplary system includes the components described above, wherein the received plurality of UE measurements are provided through an evolved Node B (eNB).

  Another exemplary system includes the components described above, wherein a plurality of received UE measurements are provided through a domain manager.

  According to another aspect, a system is provided. The system may include means for triggering measurement of reference signal received power (RSRP) of a serving cell of a user equipment (UE) in idle mode at the end of a discontinuous reception (DRX) time interval. The system of this example may include means for determining if the RSRP of the serving cell of the UE is below a threshold. The system of this example may further include means for searching for neighboring cells in response to determining that RSRP is below the threshold. The system of this example may further include means for recording information associated with the neighboring cell if the search for the neighboring cell is successful. The system of this example may further include means for recording information associated with the serving cell if the search for neighboring cells fails.

  Another exemplary system includes the components described above, wherein the log information includes RSRP, reference signal reception quality (RSRQ), cell identification, UE location, and timestamp.

  Another exemplary system includes the components described above, and further includes means for searching for neighboring long term evolution (LTE) cells and neighboring inter-radio communication access technology (IRAT) if the search for neighboring LTE cells fails. And means for searching for cells.

  Another exemplary system includes the components described above, wherein the IRAT cell comprises a Universal Mobile Telecommunications System (UMTS) cell or a Pan-European Digital Mobile Telecommunications System (GSM (R)) cell.

  Another exemplary system includes the components described above and further includes means for reporting log information to a network manager (NM) or element manager (EM) capacity and coverage optimization (CCO) module, The report is made through the evolved Node B (eNB) in response to the UE reconnecting to the eNB.

  Another exemplary system includes the components described above, and further includes means for remaining in idle mode and waiting for the next trigger after recording.

  Another exemplary system includes the components described above, and further includes means for camping on neighboring cells if the search for neighboring cells is successful.

  According to another aspect, at least one computer readable storage medium is provided, which comprises a plurality of stored instructions, as described in any of the plurality of examples described above, When executed by a processor, causes the processor to perform multiple operations of the method.

  According to another aspect, there is provided an apparatus comprising means for performing the method described in any of the above mentioned examples.

The terms and expressions used herein are used as terms in the description and are not intended to be limiting, and the features illustrated and described in the use of such terms and expressions It is understood that it is not intended to exclude all equivalents of or part of them, but that various modifications are possible within the scope of the claims. Accordingly, the claims are intended to cover all such equivalents. Various features, aspects and embodiments are described herein. As will be appreciated by one skilled in the art, the plurality of features, aspects and embodiments are combinable with one another, and variations and modifications are possible. The present disclosure is, therefore, to be considered as encompassing such combinations, modifications and variations.
An example of the present embodiment is shown as each item below.
[Item 1]
A signal measurement module measuring a reference signal received power (RSRP) of a serving cell of a user equipment (UE), said UE being in idle mode and determining whether said RSRP falls below a threshold,
A cell search and selection module for searching for a neighbor cell according to the determination that the RSRP falls below the threshold, and camping on the neighbor cell if the search is successful, the search being a neighbor long term evolution cell The cell search and selection module which is a search for (LTE cell) and the search for an adjacent inter-radio communication access technology cell (IRAT cell) if the search for an adjacent LTE cell fails;
A data recording module for recording log information associated with the adjacent cell when the search for the adjacent cell is successful, and recording log information associated with the serving cell when the search for the adjacent cell fails;
UE comprising.
[Item 2]
The UE according to claim 1, further comprising a discontinuous reception (DRX) timer that triggers the signal measurement module to perform the measurement of the RSRP, the end of a DRX time interval.
[Item 3]
A location module providing the location of the UE, the location being the location module included in the log information and a time module providing a timestamp, the timestamp being included in the log information The UE according to Item 1 or 2, further comprising a module.
[Item 4]
The UE according to any one of Items 1 to 3, wherein the log information includes RSRP, reference signal reception quality (RSRQ) and cell identification.
[Item 5]
5. The UE according to any one of items 1 to 4, wherein the IRAT cell comprises a Universal Mobile Telecommunications System (UMTS) cell or a Pan-European Digital Mobile Telecommunications System (GSM (R)) cell.
[Item 6]
The reporting module further reports the log information to a network manager (NM) or a capacity and coverage optimization (CCO) module of an element manager (EM), and the report indicates that the UE is an evolved node B (eNB). The UE according to any of the preceding items, which is made through the eNB in response to reconnecting to.
[Item 7]
Triggering measurement of a reference signal received power (RSRP) of a serving cell of a user equipment (UE), wherein the UE is in idle mode and the trigger is at the end of a discontinuous reception (DRX) time interval;
Determining whether the RSRP of the serving cell of the UE is below a threshold;
Searching for neighboring cells according to the determination that the RSRP is below the threshold;
Recording log information associated with the adjacent cell if the search for the adjacent cell is successful;
Recording log information associated with the serving cell if the search for the neighbor cell fails;
How to provide.
[Item 8]
The method according to Item 7, wherein the log information includes RSRP, reference signal reception quality (RSRQ), cell identification, the location of the UE, and a timestamp.
[Item 9]
The step of searching for the neighboring cell includes searching for a neighboring long term evolution cell (LTE cell), and searching for a neighboring inter-radio communication access technology cell (IRAT cell) if the search for the neighboring LTE cell fails. The method according to Item 7 or 8, further comprising
[Item 10]
10. The method according to item 9, wherein the IRAT cell comprises a Universal Mobile Telecommunications System (UMTS) cell or a Pan-European Digital Mobile Telecommunications System (GSM (R)) cell.
[Item 11]
The method may further comprise the step of reporting the log information to a network manager (NM) or a capacity and coverage optimization (CCO) module of an element manager (EM), the reporting step comprising: The method according to any one of items 7 to 10, which is made through the eNB in response to reconnecting to.
[Item 12]
12. The method according to any one of items 7 to 11, further comprising, after the recording step, remaining in an idle mode and waiting for the next trigger.
[Item 13]
13. The method according to any one of items 7 to 12, further comprising camping on the neighboring cell if the search of the neighboring cell is successful.
[Item 14]
On the computer
A procedure for triggering measurement of the reference signal received power (RSRP) of the serving cell of the UE, wherein the UE is in idle mode and the trigger occurs at the end of a discontinuous reception (DRX) time interval;
A procedure of determining whether the RSRP of the serving cell of the UE is below a threshold;
Searching for neighboring cells according to the determination that the RSRP falls below the threshold;
Recording log information associated with the adjacent cell if the search for the adjacent cell is successful;
Recording log information associated with the serving cell if the search for the neighbor cell fails;
A program that runs
[Item 15]
The program according to Item 14, wherein the log information includes RSRP, reference signal reception quality (RSRQ), cell identification, the position of the UE, and a time stamp.
[Item 16]
The procedure for searching for the adjacent cell includes a procedure for searching for an adjacent long term evolution cell (LTE cell) and a procedure for searching for an adjacent inter wireless communication access technology cell (IRAT cell) when the search for the adjacent LTE cell fails. The program according to item 14 or 15, further comprising an operation of
[Item 17]
The program according to Item 16, wherein the IRAT cell includes a Universal Mobile Telecommunications System (UMTS) cell or a Pan-European Digital Mobile Telecommunications System (GSM (registered trademark)) cell.
[Item 18]
On the computer
A procedure for reporting the log information to a capacity and coverage optimization (CCO) module of a network manager (NM) or an element manager (EM) is further executed, and the reporting procedure The program according to any one of items 14 to 17, which is made through the eNB in response to reconnecting to the eNB).
[Item 19]
On the computer
The program according to any one of Items 14 to 18, further causing the operations of: staying in an idle mode after the recording procedure; and waiting for a next trigger.
[Item 20]
On the computer
20. The program according to any one of items 14 to 19, further causing a procedure of camping on the neighboring cell to be performed if the search of the neighboring cell is successful.
[Item 21]
A network manager's capacity and coverage optimization system, said system comprising:
A user equipment (UE) measurement result receiving module for receiving a plurality of measurement results from a plurality of UEs in an idle mode, wherein the plurality of measurement results are associated with a cell; Said user equipment (UE) measurement result receiving module, comprising: RSRP), reference signal reception quality (RSRQ), position of said UE, and a timestamp;
A UE measurement analysis module that correlates the measurements of the plurality of received UEs based on the location of the UEs;
A coverage hole identification module that identifies and locates multiple holes in the spatial coverage of a Long Term Evolution (LTE) wireless cellular network based on the correlation;
System with
[Item 22]
22. The system according to item 21, further comprising a UE measurement results database storing measurement results of the plurality of UEs received over time intervals associated with analysis of the UE measurement results.
[Item 23]
The system according to item 21 or 22, wherein the received plurality of UE measurement results are provided through an evolved Node B (eNB).
[Item 24]
24. The system according to any one of items 21 to 23, wherein the received plurality of UE measurement results are provided through a domain manager.
[Item 25]
20. A computer readable recording medium recording the program according to any one of items 14 to 20.

Claims (23)

A user equipment (UE) for communicating on a wireless network, wherein
A processor and a memory, wherein the memory, when executed by the processor, causes the UE to reference the serving cell reference signal of the UE in idle mode at the end of a discontinuous reception (DRX) cycle based on the intermittent reception timer . If the received power (RSRP) has determined to exceed the threshold, have kept you waiting the end of the next DRX cycle, when said RSRP is determined to be smaller than the threshold value, and the RSRP up for the UE in the serving cell in idle mode The processor and the memory having a plurality of instructions for recording reference signal reception quality (RSRQ);
A transmitter for reporting the RSRP and the RSRQ to a coverage and capacity optimization (CCO) circuit in a network manager or domain manager. The UE of claim 1, wherein the transmitter further reports one or more of a timestamp, location information of the UE, and a cell ID of the serving cell. The UE according to claim 1 or 2, further comprising a measurement circuit. It further comprises a measurement circuit for measuring said RSRP and said RSRQ,
Wherein the plurality of instructions, when executed, further to the UE, UE according to claim 1 or 2, wherein the RSRP and the RSRQ is to determine is below the threshold. If the plurality of instructions are executed by the processor, further the UE
If the RSRP and the RSRQ are less than the threshold, search for adjacent long term evolution cells (adjacent LTE cells),
The UE according to claim 4, wherein if the search for the adjacent LTE cell is successful, the UE is camped on the adjacent LTE cell. If the plurality of instructions are executed by the processor, further the UE
The UE according to claim 5, wherein when the search of the adjacent LTE cell fails, the adjacent inter-radio communication access technology cell (adjacent IRAT cell) is searched. 7. The UE according to any of the preceding claims, further comprising a receiver for receiving one or more signals from an evolved Node B (eNB) associated with the serving cell of the UE. A computer implemented method for estimating the coverage of a wireless network, comprising:
If it is determined that the reference signal reception power (RSRP) of the serving cell of the idle mode UE exceeds the threshold at the end of the discontinuous reception (DRX) cycle , waiting for the end of the next DRX cycle;
If the RSRP is determined to be below the threshold, the steps of recording the RSRP Contact and reference signal received quality of the serving cell of the UE in the idle mode (RSRQ),
Reporting the RSRP and the RSRQ to a coverage and capacity optimization module (CCO module) in a network manager or domain manager. The method according to claim 8, further comprising: reporting at least one of a timestamp, location information of the UE, and a cell ID of the serving cell. Measuring the RSRP and the RSRQ;
Determining whether the RSRP and the RSRQ are below a threshold;
Searching for an adjacent long term evolution cell (adjacent LTE cell) if the RSRP and the RSRQ are less than a threshold;
10. The method according to claim 8, further comprising: camping on the adjacent LTE cell if the search for the adjacent LTE cell is successful. The method according to claim 10, further comprising: searching for a neighboring inter-radio communication access technology cell (neighboring IRAT cell) if the search for the neighboring LTE cell fails. The adjacent IRAT cells include Universal Mobile Telecommunications System (UMTS) cells or Pan-European Digital Mobile Telecommunications System (GSM®) cells.
The method of claim 11. The method according to any one of claims 8 to 12, wherein the reporting comprises: reporting the RSRP and the RSRQ to the CCO module by an evolved Node B (eNB). On the computer
If it is determined that the reference signal reception power (RSRP) of the serving cell of the idle mode UE exceeds the threshold at the end of the discontinuous reception (DRX) cycle , waiting for the end of the next DRX cycle;
If the RSRP is determined to be below the threshold, the steps of recording the RSRP and the reference signal received quality of the serving cell of the UE in the idle mode (RSRQ),
And D. reporting the RSRP and the RSRQ to a coverage and capacity optimization module (CCO module) in a network manager or a domain manager. On the computer
The program according to claim 14, further causing an operation including reporting at least one of a time stamp, location information of the UE, and a cell ID of the serving cell. On the computer
Measuring the RSRP and the RSRQ;
Determining whether the RSRP and the RSRQ are below a threshold;
Searching for an adjacent long term evolution cell (adjacent LTE cell) if the RSRP and the RSRQ are less than a threshold;
And C. camping on the adjacent LTE cell if the search for the adjacent LTE cell is successful. On the computer
The program according to claim 16, further causing an operation including the step of searching for an adjacent inter-radio communication access technology cell (adjacent IRAT cell) when the search for the adjacent LTE cell fails. The adjacent IRAT cells include Universal Mobile Telecommunications System (UMTS) cells or Pan-European Digital Mobile Telecommunications System (GSM®) cells.
The program according to claim 17. The program according to any one of claims 14 to 18, wherein the reporting comprises: reporting the RSRP and the RSRQ to the CCO module by an evolved Node B (eNB).   A computer readable storage medium storing the program according to any one of claims 14 to 19. A user equipment (UE) for communicating on a wireless network, wherein
A recording module for recording reference signal reception power (RSRP) and reference signal reception quality (RSRQ) of the serving cell of the idle mode UE;
A transmitter for reporting the RSRP and the RSRQ to a coverage and capacity optimization (CCO) module in a network manager or domain manager;
A measurement module for determining if the RSRP and the RSRQ are below a threshold,
If the RSRP and the RSRQ are less than the threshold, search for a neighboring long term evolution cell (a neighboring LTE cell), and if a search for the neighboring LTE cell succeeds, a cell search for camping on the neighboring LTE cell and And a selection module ,
If the RSRP measured at the end of the discontinuous reception (DRX) cycle exceeds the threshold, the UE waits for the end of the next DRX cycle . If the RSRP and the RSRQ are less than the threshold, search for a neighboring long term evolution cell (a neighboring LTE cell), and if a search for the neighboring LTE cell succeeds, a cell search for camping on the neighboring LTE cell and 22. The UE of claim 21, further comprising a selection module. The cell search and selection module further comprises
23. The UE according to claim 22, wherein when the search for the adjacent LTE cell fails, the UE is for searching for an adjacent inter-radio communication access technology cell (adjacent IRAT cell).

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