RU2466510C2 - Method, system and device to detect blind area - Google Patents

Abstract

FIELD: information technologies.

SUBSTANCE: method is proposed to detect a blind area, which includes the following stages: when a user terminal moves to a blind area, the user terminal records information about a location for the last moment of time of the user terminal prior to entering into the blind area; when the user terminal moves out of the blind area, the user terminal receives information on the blind area in accordance with the recorded information of detection and information of measurement produced by detection, when the signal has been recovered. The user terminal sends information on the blind area in the form of a report to a network side device.

EFFECT: improved quality of user service and saving costs of a network provider.

16 cl, 14 dwg

Description

 [0001] This application claims priority with respect to Chinese Patent Application No. 200810009362.1, filed February 25, 2008 and entitled "METHOD, SYSTEM, AND DEVICE FOR DETECTING BLIND AREA", incorporated herein by reference in its entirety.

FIELD OF THE INVENTION

[0002] The present invention relates to the field of communication technology, and, in particular, to a method, system and device for detecting a reception zone (blind area).

BACKGROUND

[0003] During network operation, problems often arise, such as a base station (BS) hardware failure and transmission interruption. These problems can be detected through network support devices, and solutions can be found. However, it is difficult to detect problems such as uplink / downlink interference and unreasonable coverage that do not lead to serious results when calculating call disconnections, while these problems are most closely and most directly related to the user. Thus, an accurate assessment is made by analyzing the problems that arise during the operation of the network, in accordance with the collected data, and meanwhile, in accordance with the test result, a corrective solution to the problems is proposed for improvement or optimization. In the prior art, this function can be performed through a path measuring device.

[0004] This track measuring device is a software / hardware device made solely for network optimization and operation planning, which includes an input data acquisition device, a global positioning system (GPS) and dedicated test software. The input device for collecting current data is basically a test mobile phone with special software inside, which can perform some special functions depending on the network, such as frequency capture, forced transfer of service, displaying network information on the screen and determining the blind area of the network; an input device for collecting current data may also perform some functions independent of the network, such as an all-wave frequency sweep and an additional frequency sweep; and meanwhile, it can still receive, via the communication cable between the computer and the mobile phone, the instructions sent by the computer and transfer the collected data to the saving computer for further processing by the computer.

[0005] However, detecting a blind region by adopting a path measurement method needs human intervention, costs are more expensive and costs are high, which does not meet the operator's network costs requirements. Additionally, when the trace is being measured, the problem of disconnecting the call is usually quite serious, and a huge impact has already been exerted on the user, so that the coverage problem cannot be solved in a timely manner. Moreover, not all locations are suitable for using the path measurement method, so the path measurement method is limited by certain geographical restrictions.

[0006] For problems existing in the path measurement technique, the prior art proposes yet another blind spot detection method in which measurement information is transmitted by a report of a mobile station (MS); or when the MS is in an active state, the MS does not need to provide measurement information, while the network records the location of the MS and collects special state information. This special state includes information that the cell is losing coverage, or the cell is reselected, or, in the inactive state, a service is initiated and it is detected that coverage is lost.

[0007] In the process of implementing the present invention, the inventors find that the prior art has at least the following problems.

[0008] Although this existing technical solution provides a coverage area detection report, the reporting cell receiving the reporting information does not selectively receive the reporting information. The existing technical solution does not consider the fact of loading the reporting cell of the cell at a given time or the case of accumulation resulting from the multiple reception by the sending cell of the same or similar reporting information from different terminals, so that the quality of service of other users in the reporting cell is affected. In a more serious situation, a breakdown of the reporting cell may be caused.

SUMMARY OF THE INVENTION

[0009] Accordingly, the present invention relates to a method, system, and apparatus for detecting a no-receive zone, wherein the no-receive zone is positioned through a user terminal detection function, and the related task of detecting a no-receive zone is performed by a reporting method so that the detection work areas of lack of admission was carried out in a more efficient and economical way. Moreover, congestion problems can be avoided, as can the case of accumulation of the same or similar reporting information from different terminals from receiving by the reporting cell by rejecting the user terminal report through the detection policy of the no reception zone.

[0010] In one embodiment, the present invention provides a method for detecting a non-reception area, comprising the following steps.

[0011] In a situation where the user terminal moves to the no-reception area, this user terminal records detection information.

[0012] If the user terminal moves from the no-reception area, the user terminal obtains information about the no-receive area in accordance with the recorded detection information and measurement information obtained by detection when the signal is restored.

[0013] The user terminal transmits, in a report, received information about the no-reception area to the network side device, providing service for the user terminal to enable the network-side device to obtain the location of the no-reception area after the user terminal is confirmed by the network side device.

[0014] In one embodiment, the present invention further provides a system for detecting a no-reception area including a user terminal and a network side device.

[0015] The user terminal is configured to record detection information if the user terminal moves to the no-reception area; obtaining information about the reception zone in accordance with the recorded detection information and measurement information obtained by detection when the signal is restored if the user terminal moves from the reception zone; and transmitting, in the form of a report, the received information about the no-reception area to the network side device providing a service for the user terminal to enable the network side device to obtain the location of the no-reception zone after the user terminal is confirmed by the network side device.

[0016] The network side device is configured to perform a no-receive area calculation and machine location calculation in accordance with the no-receive area information transmitted as a report by the user terminal to obtain location information of the no-receive area.

[0017] In one embodiment, the present invention further provides a user terminal including an information receiving and buffering unit and a report transmitting information unit.

[0018] The information receiving and buffering unit is configured to record detection information if the user terminal moves to the no-reception area; and obtaining information about the reception zone in accordance with the recorded detection information and measurement information obtained by detection when the signal is restored if the user terminal moves from the reception zone.

[0019] The report information transmitting unit is configured to transmit, in the form of a report, information on the no-reception area obtained by the information receiving and buffering unit to the network side device providing service for the user terminal to enable the network side device to obtain the zone location no reception after the user terminal is confirmed by the network side device.

[0020] In one embodiment, the present invention further provides a network side device including a reporting information receiving unit, a machine for calculating a location, and an estimation unit.

[0021] The reporting information reception unit is configured to receive information about the reception area transmitted in the form of a report by the user terminal.

[0022] The machine for calculating the location is configured to perform the calculation of the no-receive zone and the machine for calculating the location in accordance with the information about the no-receive zone received by the reporting information receiving unit in order to obtain the location information of the no-receive zone.

[0023] The evaluation unit is configured to evaluate whether report transmission of information on the reception area is required, and if transmission in the form of a report on information on the reception area is required, send a request message for transmission in the form of a report of information on the reception area to a user terminal, this request message reporting location information of resources assigned to a user terminal for transmitting information about a reception area.

[0024] Compared with the prior art, in embodiments of the present invention, the position of the no-reception area is positioned through the feedback of the user terminal, and information support is provided for the network operator to sequentially organize the BS so that the network operator is freed from track measurement with In order to detect a no-reception area, network operator costs are saved and overall network coverage is guaranteed, and, moreover, the problem of per Booting as possible and avoid the accumulation case of receiving the transmitting unit report the same or similar report information from different terminals, by refraining from the user terminal through the band report absence detection receiving policy.

BRIEF DESCRIPTION OF THE DRAWINGS

[0025] FIG. 1 is a schematic view of a first assistance scenario, through a terminal, detecting a non-reception area (blind area) in accordance with one embodiment of the present invention;

[0026] FIG. 2 is a schematic view of a second assistance scenario, through a terminal, for detecting a blind region in accordance with one embodiment of the present invention;

[0027] FIG. 3 is a flowchart of assistance, through a terminal, to detecting a blind region in accordance with one embodiment of the present invention;

[0028] FIG. 4 is a flowchart of assisting, by MS, detecting a blind region when GPS or an observed signal arrival time difference (OTDOA) is available in accordance with a first embodiment of the present invention;

[0029] FIG. 5 is a flowchart of a positioning method CELL_ID with a radio network controller (RNC) as a center in accordance with one embodiment of the present invention;

[0030] FIG. 6 is a flowchart of a method for positioning a CELL_ID of an autonomous SLMU (serving location measurement unit) (SAS) as a center in accordance with one embodiment of the present invention;

[0031] FIG. 7 is a flowchart of an RNC-based OTDOA positioning method in accordance with one embodiment of the present invention;

[0032] FIG. 8 is a flowchart of an SAS-based OTDOA positioning method in accordance with one embodiment of the present invention;

[0033] FIG. 9 is a flowchart of an GPS positioning method using an RNC-based network in accordance with one embodiment of the present invention;

[0034] FIG. 10 is a flowchart of a GPS positioning method using a SAS-based network in accordance with one embodiment of the present invention;

[0035] FIG. 11 is a flowchart of assisting, by a user terminal, detecting a blind region when GPS / OTDOA is not available, but only CELL_ID positioning in accordance with one embodiment of the present invention; and

[0036] FIG. 12 is a flowchart of facilitating, by a user terminal, detecting blind area information by sending an indication message in accordance with one embodiment of the present invention.

DETAILED DESCRIPTION OF EMBODIMENTS

[0037] Specific implementations of the present invention are further further described in detail herein with reference to the accompanying drawings and embodiments.

[0038] In one embodiment, the present invention provides a method for facilitating, by MS, the detection of a blind region in a self-organizing network (SON). This blind area refers to the area in which the user cannot exchange data with the network, including the area in which the network information can be received, while this information cannot be transmitted in the form of a report, and the area in which the network information is not can be accepted, and this information cannot be transmitted in the form of a report.

[0039] SON mainly includes automatic processes for managing configuration and optimization in planning, processes for building, configuring, and upgrading a BS, and at the same time may also include automatic processes for managing, configuring, and optimizing caused by a change in the state of network elements in a network. For example, when a network management alarm is generated, the network needs to perform functions such as automatic detection, evaluation, and recovery.

[0040] For interference cases, the parameters by which the interference is categorized in the network are a received signal strength indicator (RSSI), signal to noise ratio (SNR), interference (I), interference to noise ratio (INR), respectively, specifically being the following:

[0041] First, the threshold values determined by each parameter associated with this are as follows:

[RSSI _min ] = R;

[SNR _min ] = S;

[I _margin ] = I; and

[INR _min ] = log ₁₀ 10 ^ (I / 10) -1 = N,

where RSSI is an indicator of the level of the received signal; SNR is a signal to noise ratio; INR is the noise-to-noise ratio; and I is a hindrance.

[0042] The interference is categorized as follows:

[0043] Acceptable interference conditions are RSSI> R, SNR> S, and INR <N.

[0044] Destructive interference conditions are RSSI> R, SNR> S, and INR> N.

[0045] The changing interference conditions are RSSI> R, SNR <S, and INR> N.

[0046] According to various interference conditions, there is also a difference in processing. For example, in a situation of acceptable interference, communication may still continue without adjustment; in a situation of destructive interference, although the user can exchange data, at any time there is a risk of interruption of communication caused by interference, thus, the source of destructive interference can be determined using a certain technique, and through the coordination mechanism it is guaranteed that the network signal will not be subject to interference; and in a situation of changing interference, the user can no longer exchange data with the network, but can still receive information related to it, and at this time, if the interference cannot be eliminated, the user will disconnect due to the interference.

[0047] The basis of the evaluation and related information about the blind region are: RSSI> R, SNR <S, INR> N (blind region with a signal, that is, changing interference) or RSSI <R, SNR <S, and INR> N (blind area without signal).

[0048] Embodiments of the present invention generally relate to processing a blind region without a signal. The main scenarios are, as shown in FIG. 1 and FIG. 2, those in which one user terminal is in an active state in a particular cell, such as location 1 of the coverage area of the serving BS in FIG. 1 or FIG. 2.

[0049] 1. The user terminal enters, during movement, from the area with the network signal into the blind area, such as the area in which location 2 is located, as shown in FIG. 1 or FIG. 2, and the user terminal can evaluate, enter whether in the blind region without a signal through the values obtained RSSI, SNR and INR. In a situation where the user terminal cannot receive any network information within the blind region, detection information is recorded. This discovery information includes an identifier (ID) of a serving BS. In a situation where the user terminal records detection information, specifically, the user terminal records detection information within a predetermined time.

[0050] 2. If the user terminal continues to move and returns back from the blind area to the network signal area, such as location 3 of the coverage area of the target BS in FIG. 1 or location 3 of the coverage area of the serving BS in FIG. 2, the user terminal gets connected with this information about the current blind area in accordance with the measurement information obtained by detecting when the signal is restored.

[0051] 3. After confirmation by the network side device, the user terminal transmits in the form of a report, the received information about the blind area to the network side device. Specifically, the user terminal establishes a connection with the network side device by restoring the signal. The user terminal sends indication information to the network side device so as to indicate that the user terminal has previously entered the blind area and requires the transmission of the related information about the blind node in the form of a report. The network side device evaluates whether blind region information reporting is required, and if blind region information reporting is not required, performs a normal data exchange, and if blind region information reporting is required, sends a request message to transmit in the form of a report information about the blind node to the user terminal. This request message may conduct related content, such as the location of resources assigned to the user terminal for reporting blind area information. The user terminal in a unified way transmits in the form of a report the information required for transmission by the network side device to the network side device through a response message.

[0052] 4. The module or device of the associated blind region processing in the network side device obtains the location of the blind region. Specifically, the network side device performs blind region calculation and machine location calculation in accordance with the received information transmitted as a report by the user terminal in order to obtain blind region location information.

[0053] In the dynamic movement process described above, there is a communication mechanism or communication method between the user terminal and the node on the network side (such as the serving BS and the target BS), so as to ensure that when the user needs to report on blind node on the network side, the user can use the resources associated with these.

[0054] FIG. 3 is a flowchart of a procedure for detecting a blind region in accordance with one embodiment of the present invention. As shown in figure 3, this procedure specifically includes the following steps.

[0055] At step 301, the MS performs a network initialization access procedure through the serving BS, wherein this network initialization access procedure includes a base station subscriber station (SBC) capability negotiation procedure. This SBC negotiation procedure includes the following additional step: negotiates whether the MS and the network side support the blind area detection function using the user, and then the MS joins the network through the serving BS.

[0056] In step 302, the MS, in a situation when it is in an active state, receives information through a serving network and transmits related information required for detecting a blind region through a connection method. Then, due to movement, the MS enters the blind region without a signal, i.e. RSSI <R, SNR <S, and INR> N.

[0057] In step 303, if the MS moves from the blind region, that is, when the RSSI and SNRs received by the MS are lower than the threshold value, the MS evaluates and records some associated blind region exit information.

[0058] In step 304, in the case as shown in FIG. 1, that is, the user moves from the coverage area of the serving BS to the blind area and then moves to the coverage area of the target BS. In the process of moving, the MS may receive a signal of the target BS; after receiving the associated information in the signal of the target BS, the MS establishes communication with the network side, and the MS accesses the network side through the connection and interacts, taking into account information about the blind area, with the network side (such as the target BS). Then the network side performs the calculation and performs machine calculation of the location of the blind region through an exclusive module or exclusive device. In the case, as shown in FIG. 2, that is, the user moves from the coverage area of the serving BS to the blind area and then moves to the coverage area of the serving BS. In the process of moving, the MS again receives a signal from the serving BS, after receiving related information in the signal from the serving BS, the MS establishes communication with the network side, and the MS accesses the network side through the connection and interacts, taking into account the information about the blind area, the network side (such as the serving BS). Then the network side performs the calculation and performs machine calculation of the location of the blind region through an exclusive module or exclusive device.

[0059] Step 302 in this embodiment is a blind region detection process without a signal, while in reality a similar method can also be adopted to determine and report blind region information with a signal, such as when evaluating RSSI> R, SNR <S, INR> N.

[0060] Meanwhile, step 304 is adjusted as follows. After confirmation by the network side device, the MS sends the identifier and information about the blind area using the signal to the network side device, so that the network side device knows the situation of the blind area with the signal, and adjusts the coverage of the network cell located close to the blind area using signal in accordance with the result of the calculation transmitted with feedback for a certain time.

[0061] FIG. 4 shows a procedure for facilitating, by a user terminal, detecting a blind region when GPS or OTDOA is available in accordance with a first embodiment of the present invention. As shown in FIG. 4, this procedure specifically includes the following steps.

[0062] In step 401, the MS performs a network initialization access procedure by interacting with a serving BS, which includes an SBC negotiation procedure. This SBC negotiation procedure includes the following additional step. It is agreed whether the MS and the network side support the GPS / OTDOA function, and whether the MS and the network side support the blind area detection function, and then the MS joins the network through the serving BS.

[0063] At step 402, the MS obtains information, such as a serving BS identifier (serving BS ID), through the serving network, and transmits information related to neighbors via a connection method, such as a list of neighboring BS IDs, and / or if the MS periodically performs positioning, through the positioning system receive and store positioning information at the last time MS.

[0064] In step 403, the MS enters the blind region, that is, when the RSSI and SNR received by the MS have indicators below a certain threshold value, the MS evaluates and records some associated blind region information, such as GPS / OTDOA information positioning of the last moment of time before entering the blind region.

[0065] In step 404, in the case where the user moves from the coverage area of the serving BS to the blind area and then moves to the coverage area of the target BS, the MS evaluates the fact that the MS enters the network with the signal through the detection values received by RSSI, SNR , that is, leaves the blind area, and the MS gains access to the new network and establishes a connection. Then, the MS initiates a positioning request to the network side, and sequentially starts the positioning procedure, and obtains the current location information of the MS. The MS transmits in a report form information recorded while in the blind region and the location information of the exit from the blind region to the target BS, the target BS sends the received reporting information to the blind region detection module or device and performs blind region calculation and machine location calculation by receiving a specific algorithm (such as a GPS positioning algorithm, an OTDOA positioning algorithm, or a CELL_ID positioning algorithm) to obtain blind location information he area.

[0066] In the case where the user moves from the coverage area of the serving BS to the blind area and then moves to the coverage area of the serving BS, after receiving related information, the MS establishes communication with the network side. The MS sends a positioning request message to the serving BS through the established connection, and enters into the positioning procedure to obtain the current location, and interacts sequentially, taking into account the associated blind area information, with the network (such as the serving BS in FIG. 2) through a reporting procedure, such as GPS / OTDOA information of positioning movement to or from the blind region, or the ID of the serving BS and a list of neighboring BS IDs before entering the blind region, or SNR / RSSI / CINR. The serving BS sends the received blind region related information to the exclusive module or exclusive device, and performs the calculation and machine calculates the location of the blind region by adopting a specific algorithm (such as GPS positioning algorithm, OTDOA positioning algorithm, or CELL_ID positioning algorithm).

[0067] This embodiment of the present invention can be applied to a third generation partnership plan (3GPP) environment, and can also be applied to an IEEE 802.16 standard environment. However, the names of the elements (objects) in these two environments are different. In subsequent embodiments, in a 3GPP environment, a user terminal is a UE (user equipment), and in a BS is a B + SRNC node (serving a radio network controller), and the node B is responsible for functions such as receiving and relaying, while how the SRNC is responsible for functions such as processing and scheduling. In IEEE 802.16, the terminal is an MS, and the base station is a BS. Although the names of the elements (objects) in these two environments are different, the functions performed in reality are similar. Consequently, the following embodiments are illustrated by taking the 3GPP environment as an example.

[0068] The CELL_ID-based positioning method determines, by obtaining the cell ID of the target UE, the location where the target UE is located, and provides it for the positioning user. The target UE is in various states, such as CELL_DCH (dedicated channel) (in this state, one dedicated physical channel is assigned to the UE in the uplink and downlink. In accordance with the current set of UE activity, the cell in which the UE is located , may become known, and the UE may use a dedicated transmission channel, a shared downlink / uplink transmission channel, or a combination of these transmission channels), and CELL_FACH (direct access channel) (in this state, none are allocated the th transmission channel is not assigned to the UE, and the UE continuously monitors one FACH downlink channel, one default common uplink channel or a shared uplink transmission channel is assigned to the UE so that it is able to use this channel at any time during the access process.The location of the UE at the cell level becomes known through UTRAN, the terrestrial radio access network UMTS (universal mobile telecommunications system), specifically, is the reporting cell in a situation where the UE initiates a cell update at the last point in time). After the core network (CN) issues a location service (LCS) request, the SRNC requests the status of the UE. If the UE is in an inactive state, the SRNC performs a search call (paging) on the UE, so as to determine the ID of the cell in which the UE is located. In order to improve accuracy, the SRNC may further adopt a round-trip time (RTT) measurement method used in frequency division duplex (FDD), or an Rx time deviation method used in time division duplex (TDD). In a situation where the UE is in a soft handoff state, it may be in communication with a plurality of cells, and typically, the cell IDs are determined by the following several types of methods: selecting a cell with the best signal quality; selecting a cell used for communication between the UE and the Node B; selecting a cell recently associated with the UE; selecting a cell used by the UE recently and not prepared for handover; selecting the cell with the shortest distance from node B; and selecting a cell in communication with the UE upon receipt of the SRNC request. The cell may also be selected based on the RTT measurement or the power level of the signals received by the UE, the Node B, or the location measurement device (LMU). Other methods, such as inactivity downlink (IPDL) or transmit diversity selection (SSDT), may also be adopted for cell selection. After determining the cell ID, it is necessary to convert the cell ID to geographic coordinates or a serving area. FIG. 5 shows a CELL_ID positioning method with an RNC as a center, and FIG. 6 shows a CELL_ID positioning method with a SAS as a center.

[0069] An OTDOA positioning method is illustrated in FIG. 4. The UE measures the downlink controlled signals of various BSs in order to obtain a signal arrival time (TOA) of the downlink control device of the various BSs, i.e. the so-called control phase measurement. In accordance with the measurement result and in connection with the BS coordinates, a suitable location estimation method is adopted so as to machine calculate the location of the UE. The actual location estimation method needs to consider the case of positioning a plurality of BSs (three or four), and thus, the algorithm is more complex. Usually, the larger the number of BSs measured by the UE is, the higher the measurement accuracy, the more clearly the positioning is changed, and the more complicated the algorithm. In a situation where a positioning method is used, for BSs measured by the UE, it is necessary to simultaneously send downlink control signals. As a result, all BSs in the network must perform time synchronization. Typically, the synchronization of the sending by the BS of the downlink control signals can be accomplished by installing GPS receivers on the BS or by connecting to a time synchronization network.

[0070] FIG. 7 shows an SRT-based OTDOA positioning method. As shown in Fig.7, this method includes the following steps.

[0071] In step 701, the CN sends a location request message to the SRNC so as to request location information of the target UE. The SRNC considers the request and positioning capabilities of the UTRAN and UE.

[0072] In step 702, the SRNC sends an OTDOA measurement request message to the UE so as to request an OTDOA positioning method. At this point, the UE should be in the CELL_DCH state. If the location request message at 701 includes position periodic report information, the SRNC requests an OTDOA periodic measurement report.

[0073] In step 703, the SRNC sends an Rx-Tx time allocation request message to the UE to the UE so as to request Rx-Tx time difference information (used for FDD) or TA information (used for TDD) or Tadv (used for 1.28 Mcps in TDD). If the positioning request message at 701 includes position periodic report information, the SRNC requests an OTDOA periodic measurement report. This stage is optional.

[0074] In step 704, the UE sends an OTDOA measurement report to the SRNC and provides an OTDOA measurement result. The SRNC receives OTDOA measurement information and collects other calculation information.

[0075] In step 705, the UE sends an Rx-Tx time allocation request message to the SRNC and provides Rx-Tx time difference information (used for FDD) or TA and Tadv information (used for TDD) and the corresponding time stamp on the SRNC. This stage is optional.

[0076] In step 706, if the OTDOA measurement information is insufficient, or in order to increase the measurement effect, the SRNC requests RTT (used for FDD) or TA Rx (used for TDD) from serving node B. In FDD, the SRNC requests a delay between sending request and receive a response (RTD) from the associated database. If RTD is a constant value, it can be stored locally. In case it is a variable, the RTD should be updated during the delay time (TOD) of the OTDOA measurement.

[0077] In step 707, the Node B issues an RTT (used for FDD) or a temporary deviation Rx (used for TDD) and / or an angle of arrival (1.28 Mcps in TDD) on the SRNC. SRNC uses OTDOA to perform positioning or speed measurement. Machine calculation involves positioning conversion. Positioning evaluation includes the positioning result and the accuracy of the result evaluation. An additional speed estimate may also include accuracy.

[0078] In step 708, the SRNC sends a positioning estimate to the CN, wherein this positioning estimate includes a positioning method and positioning accuracy. If CN requires positioning accuracy, the positioning assessment further includes an indication of whether the positioning accuracy meets the required accuracy.

[0079] In step 709, if step 701, step 702, and step 703 require a periodic report, steps 704 to 710 are repeated. If only step 701 requires a periodic report (CN requires a periodic report), while step 702 and step 703 do not require a periodic report (SRNC does not require a periodic report), steps 702 through 708 are repeated.

[0080] FIG. 8 shows an SAS-based OTDOA positioning method. As shown in FIG. 8, this method includes the following steps.

[0081] In step 801, the CN sends a location request message to the SRNC so as to request location information of the target UE. The SRNC considers the request and positioning capabilities of the UTRAN and UE.

[0082] In step 802, the SRNC sends a position initialization request message in the format of the position computing application segment (PCAP) format to the SAS. This message includes location request information and a periodic report message, CELL_ID, and positioning capability of the UE.

[0083] In step 803, the SAS sends a PCAP format initialization response message to the SRNC so as to request an OTDOA positioning method, and can simultaneously request RTT information (used for FDD), or TA (used for TDD), or Tadv (used for 1.28 Mcps in TDD). This message may include a periodic report message.

[0084] In step 804, the SRNC sends an OTDOA measurement request message to the UE so as to request an OTDOA positioning method. At this time, the UE must be in the CELL_DCH state. If the location request message at step 801 includes position periodic report information, the SRNC requests an OTDOA periodic measurement report.

[0085] In step 805, if the SAS requests Rx-Tx time distribution information, the SRNC requests Rx-Tx time difference information (used for FDD), or TA information (used for TDD), or Tadv (used for 1.28 Mcps) from the UE in TDD). This request may include periodic reporting information. This stage is optional.

[0086] In step 806, the UE issues an OTDOA measurement report to the SRNC. The SRNC receives OTDOA measurement information and collects other calculation information.

[0087] In step 807, the UE provides Rx-Tx time difference information (used for FDD), or TA information (used for TDD), or Tadv (used for 1.28 Mcps in TDD) and a time stamp on the SRNC. This stage is optional.

[0088] In step 808, the SRNC forwards the OTDOA measurement report information to the SAS. This information exists in the form of a position activation response message in PCAP format and may further include RTT measurement report information.

[0089] In step 809, if the OTDOA measurement information is insufficient, or in order to increase the measurement effect, the SAS requests RTT (used for FDD) or TA Rx (used for TDD) from serving node B. This step is optional.

[0090] In step 810, in the FDD, based on input from the LMU, the RTD is calculated and stored in the SAS. This stage is optional.

[0091] In step 811, the Node B issues an RTT (used for FDD) or a temporary deviation Rx (used for TDD) and / or an angle of arrival (1.28 Mcps in TDD) on the SRNC. This stage is optional.

[0092] In step 812, the SRNC forwards CELL_ID and RTT (used for FDD) or TA (used for TDD) or angle of arrival information (used for 1.28 Mcps in TDD) to the SAS. These messages exist in the form of a position activation response message in PCAP format. This stage is optional.

[0093] In step 813, the SAS performs machine positioning calculation based on OTDOA or based on CELL_ID. If step 801 does not require a periodic report, the SAS sends the positioning information to the SRNC by posting the positioning information in a position initialization response message in PCAP format. If step 801 requires a periodic report, the SAS sends the positioning information to the SRNC by posting the positioning information in a periodic position result message in PCAP format. Machine calculation involves positioning conversion. Positioning evaluation includes the positioning result and the accuracy of the result evaluation. An additional speed estimate may also include accuracy.

[0094] At step 814, the SRNC transmits the positioning estimate to the CN. Information transmitted simultaneously includes a positioning method and an additional rate estimate. If CN requires positioning accuracy, the positioning assessment further includes an indication of whether the positioning accuracy meets the required accuracy.

[0095] In step 815, if step 804 and step 805 require a periodic positioning report, the UE sends an OTDOA measurement report, or RTT (used for FDD), or TA (used for TDD), or arrival angle information (used for 1.28 Mcps in TDD) at each time interval and sends a time stamp to the SRNC, and the SRNC sends messages to the SAS by posting these messages in a position periodic report message in PCAP format. For a new positioning estimate, steps 809 to 812 are repeated each time. The SAS performs a positioning assessment based on OTDOA or CELL_ID and sends the new positioning information to the SRNC by posting new positioning information in a periodic position result message in PCAP format. The SRNC forwards the location estimate of the information and the positioning method, as well as the additional speed to the CN. The location response message may include an indication of whether the positioning accuracy is satisfactory. Step 815 is repeated until the report time metrics meet the requirement or until the location estimate is stopped. The SAS can send the latest location estimate to the SRNC by performing the latest location estimate in the PCAP format initialization response message, and the SRNC will forward the latest location estimate to CN.

[0096] In step 816, if step 804 or step 805 does not require a periodic positioning assessment, while step 802 requires a periodic positioning assessment, the SAS may repeat steps 803 to 814 until the positioning time metrics satisfy the requirement or until the positioning procedure is terminated. In a situation where the last positioning is repeated until step 813, the SAS can send the latest position estimate to the SRNC by performing the last position estimate in the position initialization response message in PCAP format.

[0097] A GPS based positioning method is carried out by the following steps. The network side receives GPS assistance information. This network side sends this GPS assistance information to the UE. The UE obtains GPS facilitating information and machine calculates its own exact location. The UE sends location information to CN. Options for a GPS-based positioning method are categorized into a facilitating method and an autonomous method.

[0098] The GPS assisted positioning method transfers most of the functions of a conventional GPS receiver to a network processor necessary for implementation, requiring devices such as antennas, radio frequency units, and data processors. The network side sends to the UE a string of very short promotional information, including time, a list of observed satellites, Doppler parameters of the satellites, and time shift code search boxes. These parameters are useful for the built-in GPS module in matters of improving the time for receiving GPS signals. The facilitating data comes from the pseudo-distance data generated after processing by the GPS module in the UE, and can be valid for several minutes. After receiving this pseudo-distance data, the corresponding network processor or positioning server can approximately estimate the location of the UE. After the necessary modification is added to the network side, the positioning accuracy can be increased.

[0099] For the autonomous GPS positioning method, the UE includes one full-featured GPS receiver, has all the functions of the UE in the GPS positioning method using the UE, and further has functions for machine-calculating satellite locations and UE locations. In a situation where machine location calculation starts, the UE needs more data than in the situation of the method using the UE. This data can be valid for more than four hours or can be updated as needed, which usually includes time, reference location, satellite ephemeris, and time verification parameters. If some applications require higher accuracy, differential GPS signals (DGPS) must be sent to the UE continuously. DGPS signals are effective within a very wide geographical coverage, and signals can be served within a wider geographical coverage with a single reference receiver as a center. The last location is machine-calculated and obtained by the UE itself. If necessary, positioning information can be sent to any application.

[0100] FIG. 9 shows an RNC-based network positioning method of GPS. As shown in FIG. 9, this method includes the following steps.

[0101] In step 901, the application program in the CN sends a location request message to the network side SRNC so as to request location information of the target UE. The SRNC considers the request and positioning capabilities of the UTRAN and UE.

[0102] In step 902, in accordance with the capabilities of the UE, the network side SRNC sends a GPS measurement request conducting information using GPS to the UE. This information using GPS includes reference time, satellite ID, Doppler effect power, search window and center point, ephemeris table and hourly correction, as well as a yearbook. In accordance with the capabilities of the UE, the network side sends a GPS positioning request to the UE. If the location request message at step 901 includes periodic reporting information, the SRNC periodically requests a periodic report. If the UE does not have sufficient assistance information to perform the measurement, more assistance information is requested from the SRNC. If the positioning method based on the UE is in effect, the procedure proceeds to step 908.

[0103] In step 903, if the positioning method based on the UE is in effect, before sending the assistance information to the UE, the SRNC requests information such as updating the LMU and measuring the RTT. The LMU provides the difference between Node B and GPS on the SRNC. Node B provides an RTT measurement to the CRNC. If the given CRNC is not an SRNC, the CRNC forwards the information to the SRNC.

[0104] In step 904, the network side SRNC requests the GPS satellite pseudorange measurement from the UE, and requests other information. The SRNC may request from the UE the measurement of the observed SFN-SFN time difference and the Rx-Tx time difference information.

[0105] In step 905, the UE provides GPS satellite pseudorange measurement information and other information to the network. If necessary, the UE also provides the SRNC with a measurement of the observed time difference SFN-SFN and time difference information Rx-Tx, as well as their time stamps.

[0106] At step 906, the network side performs machine calculation of the positioning estimate and an additional rate estimate.

[0107] In step 907, if the positioning estimation information is insufficient, the SRNC re-starts a new positioning procedure from step 903.

[0108] In step 908, if a positioning method based on the UE is in effect, the UE sends a location estimate and an additional rate estimate to the SRNC. The message includes location information, additional speed information, accuracy, and time stamps.

[0109] In step 909, in the network including the SAS, the SAS transmits the positioning estimate to the SRNC.

[0110] In step 910, the SRNC transmits positioning information and an additional rate estimate to CN. The message further includes a positioning method. If the CN requires positional estimation accuracy, the location response message includes an indication of whether the positioning accuracy satisfies the required accuracy.

[0111] In step 911, if a periodic report is requested in steps 901 and step 902, steps 905 to 910 are repeated. The UE sends one part of a new location estimate at each time interval. If the CN requests a periodic report in step 901, while the SRNC does not request a periodic report in step 902, the SRNC repeats steps 902 through 910. The SRNC sends one part of the new location estimate at each time interval to the CN until the number of reports locations will not meet the required quantity on request.

[0112] Figure 10 shows a GPS positioning method using a network based on SAS initialization. As shown in FIG. 10, this method includes the following steps.

[0113] In step 1001, the application in the CN sends a location request message to the SRNC so as to request location information of the target UE. The SRNC considers the request and positioning capabilities of the UTRAN and UE.

[0114] In step 1002, the location request message received by the SRNC further includes a periodic reporting message, and CELL_ID and positioning capabilities of the UEs exist in the position initialization request in PCAP format.

[0115] In step 1003, in accordance with the capabilities of the UE, the SAS sends a PCAP format activation request message to the SRNC so as to initiate GPS positioning. This message includes data using GPS and may optionally include periodic reporting information. SAS can provide promotional data from multiple GPS.

[0116] In step 1004, the SRNC uses RRC signaling to forward the SAS positioning request to the UE. This RRC signaling may include periodic reporting information.

[0117] In step 1005, if GPS is operating using the UE, the SRNC requests GPS satellite pseudo-information and another measurement of information from the UE. The SRNC may request from the UE the measurement of the observed SFN-SFN time difference and the Rx-Tx time difference information. The UE provides GPS satellite pseudo-coverage measurement information and other information to the network. If necessary, the UE also provides the SRNC with a measurement of the observed time difference SFN-SFN and time difference information Rx-Tx, as well as their time stamps.

[0118] In step 1006, the SRNC sends a position activation response message in PCAP format to the SAS. This message includes the information contained in step 1005.

[0119] In step 1007, the SAS performs machine calculation of the positioning estimate and the additional velocity estimate. If a periodic report is not performed at step 1002, the SAS sends a position initialization response message in PCAP format to the SRNC. This message includes a positioning estimate and an additional speed estimate, and may further include positioning method information and an indication of whether the accuracy of the positioning estimate satisfies the required accuracy. Otherwise, the SAS sends a periodic position result message in PCAP format to the SRNC. This message includes a positioning estimate and may further include positioning method information and an indication of whether the accuracy of the positioning estimate satisfies the required accuracy.

[0120] In step 1008, if a positioning method based on the UE is in effect, the UE issues a positioning estimate and an additional rate estimate on the SRNC by means of RRC signaling. The SRNC sends the positioning estimate and the additional velocity estimate to the SAS by performing the positioning assessment and the additional velocity estimate in the position activation response message in PCAP format. This message may further include positioning method information and an indication of whether the accuracy of the positioning estimate satisfies the required accuracy.

[0121] At step 1009, the SAS can confirm the positioning estimate performed at step 1008 (such as CELL_ID information). If a periodic report is not required in step 1002, the SAS sends a position initialization response message in PCAP format to the SRNC. This message includes a positioning estimate and an additional speed estimate, and may further include positioning method information and an indication of whether the accuracy of the positioning estimate satisfies the required accuracy. If a periodic report is required in step 1002, the SAS sends a PCAP format periodic result message to the SRNC. This message includes a positioning estimate and may further include positioning method information and an indication of whether the accuracy of the positioning estimate satisfies the required accuracy. If the positioning estimation information is insufficient, the SRNC re-starts a new positioning procedure from step 1003.

[0122] In step 1010, the SRNC transmits positioning information and an additional rate estimate to CN. The message further includes a positioning method. If the CN requires positioning accuracy, the position response message includes an indication of whether positioning accuracy is adequate for the accuracy required.

[0123] If a periodic report is requested in step 1004, the UE sends one GPS measurement report at each time interval. The SRNC sends this measurement report to the SAS by posting the measurement report in a periodic position report message in PCAP format. The SAS performs machine calculation of the positioning estimate and the additional velocity estimate, confirms the machine-calculated positioning estimate and positioning estimate received from the SRNC, and sends the positioning information to the SRNC by posting the positioning information in a periodic position result message in PCAP format. If the information of the positioning method can be obtained, the SRNC forwards the information of the positioning method to CN. If the CN requires positioning accuracy, the location response message includes an indication of whether the positioning estimation accuracy satisfies the required accuracy. The process is repeated until the time metrics for sending the positioning estimate satisfy the required metrics for the times. The SAS can send the latest positioning information to the SRNC by posting the latest positioning information in a position initialization response message in PCAP format.

[0124] If a periodic report is not required in step 1004, but a periodic report is required in step 1002, the SAS repeats steps 1003 to 1010 until the time values for sending the positioning estimate satisfy the required time values or until the CN stops the positioning procedure. In the last request, at 1008, the SAS sends the last positioning result to the SRNC in the PCAP format initialization response message.

[0125] The three basic positioning methods specified in 3GPP are presented above. They can be used in various cases. The positioning method based on CELL_ID can be used in a situation where the requirement for positioning accuracy is lower; the OTDOA method can be used in a situation where the requirement for positioning accuracy is higher and the UE and the network do not have a GPS receiver; while a GPS-based positioning method is used in a situation where the requirement for positioning accuracy is high and both the UE and the network have a GPS device. Additionally, these several types of positioning methods can be used in a mixed way at the same time, so as to compensate for each other's failure. For example, by simultaneously using positioning methods based on CELL_ID and OTDOA, a better positioning effect can be obtained in rural and densely populated urban areas. Through the use of various positioning methods, the network provides positioning services for various applications and various users in various cases.

[0126] FIG. 11 is a flowchart of facilitating, by a user terminal, detecting a blind region when GPS / OTDOA is not available, but only CELL_ID positioning in accordance with one embodiment of the present invention in accordance with a second an embodiment of the present invention. As shown in FIG. 11, this method includes the following steps.

[0127] In step 1101, the MS performs a network initialization access procedure by interacting with a serving BS, which includes an SBC negotiation procedure. This SBC negotiation procedure includes the following additional step. It is agreed whether the MS and the network side support the blind area detection function by the user, and then the MS joins the network through the serving BS.

[0128] In step 1102, the MS in the active state receives information, such as the ID of the serving BS, through the serving network, and transmits information related to neighbors through a connection method, such as a list of IDs of neighboring BSs, and performs buffering of information related to neighbors.

[0129] In step 1103, the MS enters the blind region, that is, when the received RSSIs, SNRs have indicators below a certain threshold value, and the INR has indicators above a certain threshold value, the MS evaluates, records and stores some associated information about the blind an area such as a serving BS ID buffered before entering the blind area, as well as information of the neighboring BS ID list for that time, and is connected to related information about the blind area.

[0130] In step 1104, in the case as shown in FIG. 1, that is, in the case where the user moves from the coverage area of the serving BS to the blind area and then moves to the coverage area of the target BS, the MS judges that the MS enters the network with a signal through the detection values received by RSSI, SNR and INR, that is, leaves the blind area, and the MS gains access to the new network and establishes a connection. Then, the MS sends to the network side information that the MS is recording while in the blind region, and information about leaving the blind region, that is, the ID of the serving BS before entering the blind region, a list of neighboring BS IDs, or RTD / SNR / RSSI / CINR, and transmits them as a report to the target BS. The target BS sends the received reporting information to the blind region detection module or device and performs blind region calculation and machine location calculation by adopting a specific algorithm (such as the CELL_ID positioning algorithm) to obtain blind region location information.

[0131] In the case as shown in FIG. 2, that is, when the user moves from the coverage area of the serving BS to the blind area and then moves to the coverage area of the serving BS, during the MS moving process, this MS again returns to the coverage area of the serving signal BS (such as the serving BS in FIG. 2). In the signal, after receiving related information, the MS establishes a connection with the network side. Then the MS accesses the network side through the connection and interacts, taking into account the information about the blind area, with the serving BS (such as the serving BS in figure 2), that is, taking into account the indicators RTD / SNR / RSSI / CINR that occurred before or after entering the blind area. As a result, the serving BS sends the received blind region information to the exclusive module or exclusive device, and performs blind region calculation and machine location calculation by adopting a specific algorithm (such as the CELL_ID positioning algorithm) to obtain blind region location information .

[0132] The positioning algorithm in the second embodiment of the present invention is the same as the algorithm of the first embodiment, and is no longer described.

[0133] FIG. 12 shows a procedure for facilitating, by a user terminal, detecting blind area information by sending an indication message in accordance with one embodiment of the present invention. As shown in FIG. 12, this specific procedure includes the following steps.

[0134] In step 1201, the MS performs a network initialization access procedure through a serving BS, which includes an SBC negotiation procedure. This SBC negotiation procedure includes the following additional step. It is agreed whether the MS and the network side support the GPS / OTDOA function and whether the MS and the network side support the blind area detection function by the user, and then the MS joins the network through the serving BS.

[0135] In step 1202, in the active state, the MS, through the serving network, obtains information, such as the ID of the serving BS, and transmits information related to neighbors through a connection method, such as a list of IDs of neighboring BSs, and / or if the MS periodically performs positioning, through the positioning system receive and store information, such as the latest GPS / OTDOA positioning.

[0136] At step 1203, the MS enters the blind region, that is, when the RSSI and SNR received by the MS have indicators below a certain threshold value, the MS evaluates and records some related information about the blind region, such as the ID of the serving BS, buffered before entering the blind region, and / or the information of the list of neighboring BS IDs at that time, and / or information of the last positioning, and is connected to the blind region identifier information associated with this.

[0137] In step 1204, in the case as shown in FIG. 1, that is, when the user moves from the coverage area of the serving BS to the blind area and then moves to the coverage area of the target BS, at this time, the MS judges that The MS enters the network with a signal through the detection values received by the RSSI, SNR, that is, leaves the blind area, and the MS accesses the network serving the BS and establishes a connection. Then, other messages or a highlighted message sent to the network side by the MS, conduct single-bit indication information illustrating that the MS has entered the blind area earlier and now requires reporting related information on the blind area so as to initiate the system to enter the stage blind area detection processing. Then, in accordance with some information, such as a case of blind area information that has been collected by current network resources, the target BS evaluates whether reporting of blind area information is required. If the transmission of blind region information in the form of a report is not required, the user performs a normal data exchange after a specified length of time. If a blind region information report is required to be transmitted, the target BS actively sends a transmission request message as a blind region information report. This message carries out content related to the blind area, such as the names of the parameters required for transmission, the location of resources assigned to the MS for the purpose of transmitting blind area information in the form of a report. Then, if the content required for transmission by the MS includes positioning information, its MS and the target BS or other neighboring BSs perform one GPS / OTDOA positioning procedure. After the MS location information is received, the MS transmits in a report, in a unified manner, the information required for transmission in the request message from the BS to the BS through the response message. Subsequently, the target BS sends the received reporting information to the blind region detection module or device and performs blind region calculation and machine location calculation by adopting a specific algorithm (such as GPS positioning algorithm, OTDOA positioning algorithm and CELL_ID positioning algorithm) to obtain blind region location information .

[0138] In the case as shown in FIG. 2, that is, when the user moves from the coverage area of the serving BS to the blind area and then moves to the coverage area of the serving BS, during the movement of the MS, this MS returns to the coverage area of the serving signal The BS (such as the serving BS in FIG. 2), after receiving related information in the signal, the MS establishes a connection with the network side. Then, the MS accesses the network through the connection and interacts, taking into account the information, with the serving BS (such as the serving BS in FIG. 2). Then, other messages or a highlighted message sent to the network side by the MS, conduct single-bit indication information illustrating that the MS has entered the blind area earlier and now requires reporting related information on the blind area so as to initiate the system to enter the stage blind area detection processing. Then, in accordance with some information, such as a case of blind area information that has been collected by current network resources, the serving BS evaluates whether it is necessary to perform a sequential transmission procedure in the form of a report of blind area information. If the execution of a sequential procedure for transmitting blind area information in a report is not necessary, the user performs a normal data exchange after a specified length of time. If the execution of a sequential transmission procedure in the form of a blind region information report is necessary, the serving BS actively sends a transmission request message in the form of a blind region information report. This message carries content related to the blind area, such as the names of the parameters required for transmission (information RSSI / SNR / CINR / RTD / RSSI / SNR / GPS / OTDOA), and the location of resources assigned to the MS for the purpose of reporting blind area. Then, if the content required for transmission by the MS includes GPS / OTDOA positioning information, the MS and the target BS or another neighboring BS perform one positioning procedure. After the location information of the MS is received, required to be transmitted by the BS in the request message, the information is transmitted in the form of a report in a unified way to the BS through the response message. Subsequently, the serving BS sends the received reporting information to the blind region detection module or device and performs blind region calculation and machine location calculation by adopting a specific algorithm (such as GPS positioning algorithm, OTDOA positioning algorithm and CELL_ID positioning algorithm) to obtain blind region location information .

[0139] In one embodiment, the present invention provides a blind area detection system including a user terminal and a network side device. The user terminal is configured to record detection information in a predetermined time interval, in a situation of moving into the blind region, this information including the ID of the serving BS; obtaining information about the current blind region in accordance with the recorded detection information and measurement information obtained by detecting when the signal is restored, in a situation of movement from the blind region; and transmitting, in a report, the received blind area information to the network side device providing service for the user terminal after the user terminal is confirmed by the network side device so that the network side device obtains the location of the blind region. The network side device is configured to perform blind region calculation and machine location calculation in accordance with the received blind region information transmitted as a report by the user terminal confirmed by the network side to obtain blind region location information. The network side device is a target BS or a serving BS.

[0140] The user terminal includes a blind area detection unit, an information receiving and buffering unit, and a report transmission information unit. The blind region detection unit is configured to evaluate whether a user terminal enters the blind region or moves from the blind region. The information acquisition and buffering unit is configured to record detection information within a predetermined time, in the case of moving to the blind region, this information including the ID of the serving BS; obtaining information about the current blind region in accordance with the recorded detection information and measurement information obtained by detecting when the signal is restored, in a situation of movement from the blind region. The report information transmitting unit is configured to report in a blind region information received on the network side device after the user terminal is confirmed by the network side device so that the network side device receives the blind region location.

[0141] The user terminal further includes an indication sending unit, an information receiving unit, and a matching unit. An indication sending unit is configured to send indication information to a network side device after the information receiving and buffering unit receives blind area information so as to indicate that the user terminal has entered the blind area earlier and needs to be transmitted in the form of a report related to this information about the blind region, so as to initiate the entry of the network side device into the blind region detection processing procedure. The information receiving unit is configured to receive a transmission request sent by the network side device in the form of a report, information about the blind area, and this message carries out the related content required to transmit the blind area report and the location of resources assigned to the terminal user to transmit information about the blind area. The transmitting unit in the form of an information report is specifically configured to transmit as a report information on the blind area obtained by the information receiving and buffering unit to the network side device in accordance with the request message for transmitting in the form of a report the information on the blind area received by the information receiving unit. The matching unit is configured to negotiate with the user terminal the need to support the blind area detection function using the user.

[0142] The network side device includes a reporting information receiving unit, a machine for calculating a location, an evaluation unit, and a matching unit. The reporting information receiving unit is configured to receive reporting information sent by the user terminal. The machine location calculation unit is configured to perform blind area calculation and machine location calculation in accordance with the received information transmitted in the form of a report by the user terminal in order to obtain information about the location of the blind area. The evaluation unit is configured to evaluate whether a blind region information is required to be transmitted as a report, and to perform a normal data exchange in a situation where blind region information is not transmitted as a report, or to send a transmission request message to the UE as an information report about a blind area in a situation where it is necessary to transmit information about a blind area in the form of a report, and this sending message can carry out related content, such as the location of resources assigned to the reporting report of obsession. The matching unit is configured to negotiate with the UE the need to support the blind area detection function using the user.

[0143] In embodiments of the present invention, positioning of the location of the blind region is done through the feedback of the UE, and information support is provided for the network operator to sequentially organize the BS so that the network operator is freed from path measurements to detect the blind region, network operator costs are saved , the general network coverage is guaranteed and the problem of congestion can be avoided, as can the case of accumulation of the same or similar cell from the reception of the transmitting report, can be avoided reporting information from various terminals by discarding the UE report through a blind area detection policy.

[0144] Through the descriptions of the above embodiments, those skilled in the art will understand that the present invention can be accomplished by hardware only or by software and the necessary universal hardware platform. Based on such considerations, the technical solution of the present invention can be implemented in the form of a software product. This software product can be stored in a non-volatile (long-term) storage medium (on media) (CD-ROM, USB disk and removable hard disk). The software product includes a number of instructions that enable a computer device (personal computer, server, or network device) to execute the method provided in each embodiment of the present invention.

[0145] In conclusion, the above embodiments are only some illustrative (exemplary) embodiments of the present invention, but are not intended to limit the scope of the present invention. It is apparent that those skilled in the art can make various modifications and variations of the present invention without departing from the scope of the present invention.

Claims (16)

1. A method for detecting a no-receive zone, comprising the steps of:
recording through the user terminal, detection information in a situation if the user terminal moves to the no-reception zone, the detection information being location information for a last moment of time of the user terminal before entering the no-reception zone;
receive through the user terminal information about the no-receive zone in accordance with the recorded detection information and measurement information obtained by detecting when the signal is restored, in a situation where the user terminal moves from the no-receive zone, the measurement information being information about the current location of the user terminal ; and
transmitting in the form of a report through the user terminal the received information about the reception zone to the network side device providing service for the user terminal in order to enable the network side device to obtain the location of the reception zone if the network side device determines that transmission is required in the form report information about the reception area. 2. The method for detecting a no-receive zone according to claim 1, wherein transmitting, in the form of a report by a user terminal, information about a no-receive zone to a network side device providing a service for a user terminal in order to provide a network side device with a possibility to obtain a zone location the lack of reception, if the network side device determines that it is necessary to transmit in the form of a report information about the zone of lack of reception, contains the stages at which
establish through the user terminal a connection with the network side device after the signal is restored;
send, by the user terminal, indication information to the network side device, so as to indicate that the user terminal has entered the no-receive zone earlier, and requires transmitting, in the form of a report, information about the no-receive zone;
evaluate by means of the network side device whether transmission of the information on the reception area is required in the form of a report, and if transmission of the information on the reception area is required in the form of a report, a request message for transmission of the information on the reception area is sent to the user terminal, the message informs the location of the resources assigned to the user terminal for transmitting, in the form of a report, information about the reception area;
transmit in the form of a report to the device of the network side via the user terminal the information required by the device of the network side about the zone of no reception through the response message; and
performing, by the network side device, the calculation of the non-reception area and the machine-based location calculation in accordance with the information about the non-reception area transmitted in the form of a report by the user terminal to obtain information about the location of the non-reception area. 3. The method for detecting a no-receive zone according to claim 1, wherein transmitting, in the form of a report by the user terminal, information about the no-receive zone to the network side device providing service for the user terminal to provide the network side with the possibility to obtain the zone location the lack of reception, if the network side device determines that it is necessary to transmit in the form of a report information about the zone of lack of reception, contains the stages at which
establish through the user terminal a connection with the network side device after the signal is found;
initiate, by the user terminal, a positioning request to the network side device to obtain information about the current location of the user terminal from the network side device; and
transmit, in the form of a report, to the network side device via the user terminal, the recorded detection information before entering the no reception area and the current location information of the user terminal after the user terminal is confirmed by the network side device, and the no reception area calculation and machine calculation of the location in accordance with the received information transmitted in the form of a report by the user terminal for gender training information about the location of the reception area. 4. The method for detecting a no-receive zone according to claim 1, further comprising the step of:
judging by the user terminal whether to move from the no-reception area in accordance with the received signal strength indicator (RSSI), signal-to-noise ratio (SNR), and noise-to-noise ratio (INR). 5. The method for detecting a no-receive zone according to claim 1, wherein prior to recording detection information by a user terminal, the method further comprises coordinating, by a user terminal with a network side device, whether both sides support a user-by-user detection function . 6. The method for detecting a no-receive zone according to claim 3, wherein the network-side device obtains information about a current location of a user terminal by means of a positioning method. 7. The method for detecting a no-receive zone according to claim 6, wherein the positioning method comprises
positioning using the global positioning system (GPS), positioning using the observed difference in time of arrival of signals (OTDOA) or CELL_ID positioning. 8. The method for detecting a no-receive zone according to claim 2 or 3, wherein the network-side device is a target base station (target BS) or a serving base station (serving BS). 9. A system for detecting a no-reception area, comprising
a user terminal configured to record detection information if the user terminal moves to the no-reception zone, the detection information being location information for a last moment of time of the user terminal before entering the no-reception zone; obtaining information about the no-receive zone in accordance with the recorded detection information and the measurement information obtained by detecting when the signal is restored if the user terminal moves from the no-receive zone, the measurement information being information about the current location of the user terminal; and transmitting, in the form of a report, the received information about the no-receive zone to the network side device providing service for the user terminal to enable the network-side device to obtain the location of the no-reception zone if the network-side device determines that it is necessary to transmit the absence zone information as a report reception; and
a network side device configured to perform a no-receive area calculation and machine location calculation in accordance with the no-receive area information transmitted as a report by the user terminal to obtain location information of the no-receive area. 10. A user terminal comprising
an information receiving and buffering unit configured to record detection information if the user terminal moves to the no-receive zone, the detection information being location information for a last moment of the user terminal before entering the no-receive zone; as well as obtaining information about the no reception area in accordance with the recorded detection information and measurement information obtained by detecting when the signal is restored if the user terminal moves from the no reception zone, the measurement information being information about the current location of the user terminal; and
an information transmitting unit configured to report, in the form of a report, information about the no-reception area obtained by the information-receiving and buffering unit to the network side device providing service for the user terminal to enable the network side device to obtain the location of the no-reception zone if the device the network side will determine that it is required to transmit in the form of a report information about the reception area. 11. The user terminal of claim 10, further comprising an indication sending unit and an information receiving unit, wherein the indicating sending unit is configured to send the indication information to the network side device after the information receiving and buffering unit receives information about the reception area, so to indicate that the user terminal has entered the non-reception zone earlier and requires the transmission of the associated information about the non-reception zone in the form of a report;
an information receiving unit is configured to receive a request for transmission sent by the network side device in the form of a report of information about a reception zone, and this request message tells the location of resources assigned to a user terminal for transmitting information on a zone of reception of a report;
the information transmission unit is specifically configured to transmit, in the form of a report, information about the reception zone received by the information receiving and buffering unit to the network side device in accordance with the request message to transmit in the form of a report information on the reception zone received by the information reception block . 12. The network side device containing
a reporting information reception unit configured to receive information about a reception area transmitted in the form of a report by a user terminal;
a machine location calculation unit configured to perform the calculation of the reception area and machine location calculation in accordance with the information about the reception area received by the reporting information receiving unit to obtain location information of the reception area; and
an evaluation unit configured to evaluate whether it is necessary to transmit, in the form of a report, information about the no-reception area, and send a request message to send in the form of a report information on the no-receive zone to the user terminal if transmitting in the form of a report information about the no-receive area is required moreover, this request message reports information about the location of resources assigned to the user terminal for transmission in the form of a report of information about the reception zone. 13. A method for detecting a non-reception area, comprising the steps of:
receive through the user terminal information about the no-receive zone in accordance with the measurement information obtained by detecting when the signal is restored if the user terminal moves from the no-receive zone, the measurement information being information about the current location of the user terminal; and
transmit in the form of a report through the user terminal the received information about the reception zone to the network side device to enable the network side device to obtain the location of the reception zone if the network side device determines that transmission of the reception zone information in the form of a report is required. 14. The method for detecting a no-receive zone according to claim 13, further comprising the step of:
recording detection information via the user terminal if the user terminal moves into the no-reception area, and this detection information contains an identifier of a serving BS. 15. The method for detecting a no-receive zone according to 14, further comprising the step of:
recording through the user terminal, detection information within a predetermined time, the detection information being location information for the last moment of time of the user terminal before entering the reception area. 16. The method for detecting a no-receive zone according to claim 14, wherein the received information about the no-receive zone contains measurement information and detection information.

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