KR20140002904A - Method for reporting of cgi(cell global identity) information and apparatus supporting the method - Google Patents

Abstract

CGI (cell global identity) information reporting method in a wireless communication system. That is, the present invention provides a method for a terminal to report cell global identity (CGI) information in a wireless communication system, the method comprising: (a) receiving broadcasting channel information of a second base station in a discontinuous reception interval set by a first base station; ; (b) acquiring CGI information of the second base station from the broadcasting channel information in advance in the absence of a CGI information request from the first base station; (c) after receiving the broadcasting channel information of the second base station, receiving from the first base station a connection reconfiguration request message including discontinuous reception configuration information and a CGI information request; And (d) reporting the CGI information of the second base station to the first base station according to the connection reset request message.

Description

TECHNICAL FOR REPORTING OF CGI (CELL GLOBAL IDENTITY) INFORMATION AND APPARATUS SUPPORTING THE METHOD}

The present invention relates to wireless communication, and more particularly, to a method for reporting cell global identity (CGI) information of a terminal in a wireless communication system and an apparatus for supporting the same.

Wireless communication systems are widely used to provide various types of communication content such as voice, data, and the like.

Such systems may be multiple-access systems capable of supporting communication with multiple users by sharing available system resources (eg, bandwidth and transmit power). Examples of such multiple-access systems are code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems 3GPP Long Term Evolution (LTE) systems and Orthogonal Frequency Division Multiple Access (OFDMA) systems.

In general, a wireless multiple-access communication system can simultaneously support communication for multiple wireless terminals. In such a system, each terminal may communicate with one or more base stations via transmissions on the forward and reverse links. The forward link (or downlink) refers to the communication link from the base stations to the terminals, and the reverse link (or uplink) refers to the communication link from the terminals to the base stations. Such a communication link may be a single input single output (SISO), multiple input single output (MISO), or multiple input multiple output (SISO). MIMO) can be set via the system.

A MIMO system uses multiple (NT) transmit antennas and multiple (NR) receive antennas for data transmission. The MIMO channel formed by NT transmit antennas and NR receive antennas can be broken down into NS independent channels, which are also referred to as spatial channels, where NS = min {NT, NR}. Each of the NS independent channels corresponds to a dimension. The MIMO system can provide improved performance (eg, higher throughput and / or greater reliability) if additional dimensions generated by multiple transmit and receive antennas are utilized.

The MIMO system supports Time Duplex Division (TDD) and Frequency Duplex Division (FDD) systems. In a TDD system, the forward and reverse link transmissions are on the same frequency range, and the reciprocity principle allows estimation of the forward link channel from the reverse link channel. This may extract the transmit beamforming gain on the forward link of that access point when multiple antennas are available at the access point.

Automatic Neighbor Relation (ANR) configuration and optimization method is the most essential use case in a self-organizing network (SON). Currently, a neighbor cell list (hereinafter referred to as 'NCL') is generated manually through coverage predictions by a cell planning tool before the base station is installed. However, due to incomplete maps and building data, it is difficult to obtain accurate NCL, so additional drive / walk tests are performed. The NCL generated through such coverage prediction is used unchanged. However, there may be a situation in which a new cell is added or an existing cell is removed while the base station is operating, and the coverage of the existing neighbor cell is changed due to environmental changes, so that the neighbor relation is referred to as 'NR'. May be changed).

Rapidly increasing the complexity of LTE systems has increased the need for operation and maintenance of LTE networks. Therefore, it would be desirable to have a method and apparatus associated with increasing the probability of reporting a cell global identity (CGI) of a neighboring base station.

The present invention is a method for increasing the probability that a UE reports a cell global identity (CGI) for a neighbor cell during ANR in a wireless communication system.

The ANR is a procedure in which an enhanced NodeB (eNB) requests CGI information about a neighbor cell to a user equipment (UE). At this time, the base station allows the terminal to set a discontinuous reception (DRX) state, and the terminal decodes a broadcasting channel (BCH) of a neighbor cell in the DRX state to obtain CGI information. However, when a periodic reporting timer of measurement information including a previously set measurement identity (measId) expires and a measurement report (MR) of the corresponding measurement identifier is triggered, The UE may not trigger the DRX state because the scheduling request for the MR transmission is triggered. In this case, since the enough time required for decoding the broadcasting channel for the neighbor cell is not guaranteed for the UE, the possibility of reporting the CGI is reduced.

The present invention provides a method of increasing the CGI reporting probability by providing an UE with an environment capable of decoding a broadcasting channel of a neighbor cell.

The technical problems to be solved by the present invention are not limited to the technical problems and other technical problems which are not mentioned can be understood by those skilled in the art from the following description.

In one aspect of the present invention, a method for a UE to report cell global identity (CGI) information in a wireless communication system, the method comprising: (a) receiving broadcasting channel information of a second base station in a discontinuous reception interval set by a first base station; Making; (b) acquiring CGI information of the second base station from the broadcasting channel information in advance in the absence of a CGI information request from the first base station; (c) after receiving the broadcasting channel information of the second base station, receiving from the first base station a connection reconfiguration request message including discontinuous reception configuration information and a CGI information request; And (d) reporting the CGI information of the second base station to the first base station according to the connection reset request message.

In another aspect of the present invention, a terminal for reporting cell global identity (CGI) information in a wireless communication system, the terminal comprising: a receiving unit for receiving a radio signal; A transmitter for transmitting a wireless signal; A processor for processing data; And a memory unit, wherein the processor is configured to (a) control the receiver to receive broadcasting channel information of a second base station in a discontinuous reception interval set by a first base station, and (b) the first station. In the absence of a CGI information request from a base station, the CGI information of the second base station is obtained in advance from the broadcasting channel information, and (c) after receiving the broadcasting channel information of the second base station, discontinuous reception. Control the receiving unit to receive a connection reset request message including a configuration information and a CGI information request from the first base station, and (d) according to the connection reset request message, receive CGI information of the second base station from the first base station. There is provided a terminal apparatus, configured to control the transmitting unit to report.

Preferably, receiving from the first base station a connection reset request message including measurement report (MR) configuration information according to the event; And reporting, according to the measurement report configuration information, a measurement report to the first base station according to a certain period when a measurement report (MR) condition, which is a radio condition under which MR is triggered, is further performed. A method is provided.

Preferably, between step (b) and step (c), further comprising the step of receiving a connection reset request message including the measurement report configuration information from the first base station, CGI information reporting method is provided.

Preferably, according to the measurement report configuration information, the CGI information reporting method, which performs the step of performing a measurement report to the first base station at a predetermined period is provided.

Preferably, step (d) is performed in the discontinuous reception interval between the terminal and the first base station according to the discontinuous reception configuration information, CGI information reporting method is provided.

In the ANR (AUTOMATIC NEIGHBOR RELATION) reporting of the present invention (reporting) is performed before the event triggered (MR) measurement report (MR) to maintain the DRX state of the UE (UE). Therefore, the DRX state of the UE for CGI reporting is maintained, thereby increasing the probability of CGI reporting.

According to the present invention, when a broadcasting channel of a neighboring base station is decoded and stored in advance, when decoding the broadcasting channel of the neighboring base station, a ghost cell detection error that does not actually exist instead of the neighboring base station is caused. Expect adjacent cell discrimination.

The effects obtained by the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the following description will be.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of the specification, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the invention.
FIG. 1 is a diagram illustrating a method for ANR between a UE and a base station in a general ANR (Nautomatic NEIGHBOR RELATION) scheme in an LTE system.
2 is a diagram illustrating a problem of the existing operation during ANR (AUTOMATIC NEIGHBOR RELATION).
3 is a diagram illustrating an ANR (AUTOMATIC NEIGHBOR RELATION) process according to the present invention.
FIG. 4 is a block diagram illustrating an apparatus for supporting an automatic NEIGHBOR RELATION (ANR) procedure according to an embodiment of the present invention.

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following detailed description, together with the accompanying drawings, is intended to illustrate exemplary embodiments of the invention and is not intended to represent the only embodiments in which the invention may be practiced. The following detailed description includes specific details in order to provide a thorough understanding of the present invention. However, those skilled in the art will appreciate that the present invention may be practiced without these specific details.

The techniques described herein include code division multiple access (CDMA), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single-carrier frequency division multiple access (SC-FDMA), It can be used for a variety of wireless communication systems such as high speed packet access (HSPA) and other systems. The terms "system" and "network" are often used interchangeably. The CDMA system may implement a radio technology such as Universal Terrestrial Radio Access (UTRA), CDMA2000, or the like. UTRA includes Wideband-CDMA (W-CDMA) and other variants of CDMA. CDMA2000 covers IS-2000, IS-95 and IS-856 standards. The TDMA system may implement a radio technology such as Global System for Mobile Communications (GSM). OFDMA networks use wireless technologies such as Evolved UTRA (E-UTRA), Ultra Mobile Broadband (UMB), Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Flash OFDM, and others. Can be implemented.

Various embodiments are described herein in connection with a wireless terminal. A wireless terminal may be called a system, a subscriber unit, subscriber station, mobile station, mobile, remote station, remote terminal, access terminal, user terminal, terminal, wireless communication device, user agent, user device, or user equipment (UE). Wireless terminals connect to cellular telephones, cordless telephones, session initiation protocol (SIP) telephones, wireless local loop (WLL) stations, personal digital assistants (PDAs), handheld devices with wireless connectivity, computing devices, or wireless modems. It may be another processing device. Moreover, various embodiments are described herein in connection with a base station. The base station may be utilized to communicate with the access terminal (s) and may also be referred to as an access point, Node B, evolved Node B, or any other terminology.

Existing physical cell identifier (PCID) allocation and cell classification schemes are defined in a cell environment that does not consider a small base station such as a femto base station. If the femto base station installation is very limited or is introduced into a separate frequency band from the macro cell, the femto base station may allocate a PCID in a form similar to the macro base station, and the terminal may perform a cell search.

It is assumed that 500 small base stations are installed per sector in a cell having an Inter Site Distance (ISD) of 500 m. In this case, in a dense environment of apartments, it is assumed that about 6000 households live when the cell radius is 400m, and when femto base station usage is assumed to be 50%, 1000 femto base stations are installed per sector. In such a dense environment, if a small base station is assigned a PCID as a co-channel in the same frequency band according to a given structure, the PCID overlaps at least three times with 168 cell group IDs per sector defined in the LTE specification. Even if a femto base station is introduced as a dedicated channel of different frequency bands, the PCIDs must be duplicated at least twice. When a femto base station having the same PCID exists in the same macro cell as described above, the terminal or the macro base station cannot distinguish the femto base station having the same PCID by the conventional cell search method. That is, "CGI" is identification information that can uniquely identify a cell in the mobile communication system according to the present embodiment, whereas "PCID (Physical Cell Identity)" is a WCDMA system movement. It corresponds to a scramble code in a communication system, and is used repeatedly in a plurality of cells. That is, in the mobile communication system according to the present embodiment, a cell cannot be uniquely identified only by 'PCID'.

The measurement report (MR) is sent periodically during an active voice or data session. The MR is used by the mobile device to inform the wireless network of the mobile device's enrollment needs for handover and takes downlink (from base station to mobile device) measurements for neighboring transmitters (sector antenna or omni directional cell antenna). Include. This technique, called mobile-assisted-handoff (MAHO), is common to most cellular wireless networks, including US TDMA (IS-136), CDMA, GSM, and UMTS. During a voice or data session, the mobile device uses idle time to retune its receiver to monitor the broadcast channels (also known as beacons) of the nearby base station antenna. For the serving cell, the mobile measures the beacon reception level and receiver quality; For all other neighbors in the measurement report, only the reception level is available. In some spread spectrum techniques, a path loss measurement is returned rather than the received beacon strength.

The measurement request is only available during an active (encrypted) session on the FACCH and therefore the RNM 82 cannot be used without key sharing. The LMS 11 may detect a measurement report for Abis, or BTS-BSC, interface. Since the measurement report is periodic, the LMS 11 can determine the call duration. Since the measurement report includes power levels, the wireless location system is informed of the beacon broadcast power to perform hybrid cell-ID as a power differential-of-arrival once the beacon powers (or path losses) are normalized. Sector information, measurement report, timing advance, and serving cell may be used.

 In order to alleviate this problem, the user equipment decodes CGI (Cell Global IDentity: CGI) included in system information broadcasted from a downlink shared channel (PDSCH) to a scheduling unit (SU). Through this, femto base stations having the same cell identifier (PCID) are uniquely distinguished. This system information is transmitted at least once every eight radio frames.

For this reason, when the UE reports a measurement, the PCID of the measurement target cell is received in the measurement report message, and is reported first, and if the target cell cannot be determined through the PCID, the macro base station allocates a long gap assignment. The CGI is requested to be reported, and the user terminal decodes the system information and then reports the macro base station to the macro base station, which requires a maximum of 80 ms or more. In order for a terminal to receive notification information of neighboring cells during communication, a 'gap gap' that temporarily stops communication with a cell in communication in a short period of time (e.g., 80 ms) sufficient to receive notification information. Is needed. In addition, in order to search and measure a cell having a frequency different from that of the cell with which the terminal is communicating, a 'measurement gap' is required. The measurement gap may be shorter than the predetermined gap required for receiving the notification information, but is sufficient for measurement.

A periodic measurement gap is needed to perform the equalization (eg, a measurement gap of 5 ms at a 40 ms period).

The UE periodically measures the quality of a current cell or a neighboring cell, for example, an intra-neighbor cell or an inter-RAT neighbor cell, and transmits the measured value to a Measurement Report Message and transmits it to the base station. After receiving the measurement report message from the mobile terminal, the base station checks the value in the message and compares the quality of the cell managed by the mobile terminal with the quality of the neighboring cell. If the mobile terminal is located in the current cell, . The measurement report message transmitted from the mobile station to the base station may be transmitted to the base station in a periodic manner or an event-triggered manner.

FIG. 1 is a view illustrating a method for ANR between a UE and a base station in a general ANR (AUTOMATIC NEIGHBOR RELATION) scheme in an LTE system.

Referring to FIG. 1, the serving base station requests a measurement report (MR) for a neighbor cell as an RRC connection reconfiguration message according to an event (S110).

After the UE performs the measurement for the neighbor cell and the result satisfies the radio condition in which the MR defined in the measurement configuration of the received RRC connection reconfiguration is triggered The MR according to the event is transmitted to the serving base station (S120).

The serving base station transmits an RRC connection reconfiguration including a CGI information request and a DRX state setting to the terminal according to a measurement result received from the terminal.

Upon receiving the RRC connection reconfiguration including the CGI information request and the DRX state configuration, the UE decodes the BCH of the neighbor cell during the DRX interval (S140). At this time, a timer T321 according to the CGI information request is started (S130).

The terminal transmits the CGI information to the base station before the timer T321 period expires according to the decoded BCH information (S150).

In the existing operation, in case of MR transmission according to an event, the DRX interval ends. That is, when the measurement report of the neighbor cell is made, the continuous section between the serving base station and the terminal is set again. Therefore, when the DRX section is expired without being maintained by the MR report according to the event, the CGI information may not be transmitted to the base station. This is because MR reporting is performed according to an event in the middle of a DRX section in which a broadcasting channel and CGI information should be reported in order to transmit CGI information. That is, when the MR condition is satisfied, which is a radio condition in which the MR is triggered according to the measurement configuration received before the CGI information request, the terminal may be DRX due to SR triggering for MR transmission. You will not be able to maintain your state. Therefore, the UE cannot secure enough time to decode the BCH of the neighbor cell, thus reducing the probability of reporting the CGI. Accordingly, since the terminal cannot maintain the discontinuous reception (DRX) state for the MR transmission according to the event (event based MR), there is a problem in that the MR is transmitted without CGI after the timer T321 expires due to the failure of BCH decoding.

2 is a diagram illustrating a problem of the existing operation during ANR (AUTOMATIC NEIGHBOR RELATION).

As shown in FIG. 1, the CGI information may not be transmitted to the base station before the timer T321 expires.

2 illustrates a problem caused by CGI reporting in the prior art.

Referring to FIG. 2, the base station requests a measurement report (MR) for a neighbor cell through an RRC connection reconfiguration message to the terminal (S210).

The terminal, in response to the received RRC connection reconfiguration message, performs a measurement report. After performing the measurement for the neighbor cell, the UE performs a radio condition that triggers an MR defined in a measurement configuration of RRC (Radio Resource Control) connection reconfiguration. condition), the MR is transmitted to the base station (S220).

 The MR transmission time becomes the start time of the periodic reporting timer. Here, the periodic report timer may mean 'ReportInterval' specified in the 3GPP 36.331 LTE document. In addition, the periodic reporting timer may operate on the measurement report generated by the event. That is, the terminal may periodically transmit the MR when the measured wireless environment satisfies a specific condition defined by the network. A periodic report timer of measurement information including a measurement identity (measId) corresponding to the transmitted MR is started (S230). Therefore, at a time point in which the MR is periodically transmitted to the base station, the periodic reporting timer expires (S260). As such, a constant period according to the periodic reporting timer is defined as T.

Apart from the RRC connection reestablishment message, the base station requests CGI information to the UE and transmits a connection reconfiguration message for setting a discontinuous reception (DRX) state (S240). Attempts to decode the broadcasting channel (BCH) of the neighboring base station in the DRX section (S250). From this time, a timer T321 for reporting a measurement to the serving base station is started.

The discontinuous reception section is changed to a continuous section by transmitting an MR according to an event. In addition, as mentioned above, the predetermined period T according to the periodic reporting timer of the measurement information including the measurement identifier (measId) expires (S260). In other words, at the time when the periodic reporting timer expires, the terminal transmits an MR according to an event to the base station (S270).

As described above, it is changed to a continuous reception section for MR transmission according to an event, and thus the terminal cannot maintain a discontinuous reception (DRX) state. In the continuous reception section, since the broadcast channel of the neighboring base station cannot be decoded, the MR is transmitted without the CGI after the timer T321 expires (S280). Therefore, since there is not enough time to decode the broadcasting channel of the neighboring base station, the base station does not receive the CGI information and a problem occurs that the timer of T321 expires.

3 is a diagram illustrating an ANR procedure proposed in the present invention.

Referring to FIG. 3, the terminal receives a connection reconfiguration request message including a discontinuous reception (CDRX) configuration from a serving base station (Network: NW) (S310).

The terminal attempts to decode a broadcast channel of a neighbor cell in a discontinuous reception interval and, unlike the prior art, stores decoding information without a CGI information request from a serving base station. (S320).

Thereafter, a connection reset request message including measurement report (MR) configuration information according to an event is received from the serving base station (S330).

According to the measurement report configuration information, if the condition of the measurement report (MR) is satisfied, and transmits a measurement report (MR) according to the event (S340). At the same time, the periodic report timer T is started.

A connection reset message including a discontinuous reception (CDRX) setting and a request for CGI information is received from the base station (S350). At the same time, the CGI timer period T321 is started.

In the CGI reporting condition, only when the PCIDs are the same, the CGI report is performed only for neighboring cells whose measurement value is greater than or equal to the threshold value. When the CGI information is updated, the CGI information is deleted when the serving base station has a different PCID.

The Ncell CGI report may be transmitted before expiration of the timer T321 based on the broadcasting channel information of the neighbor cell stored in operation S320 (S360). Therefore, after receiving the CGI information request, the broadcasting channel information of the stored neighbor cell can be directly used without time consuming to decode the broadcasting channel of the neighbor cell.

After the CGI report is performed, a measurement report (MR) according to an event is transmitted (S370). Before the discontinuous interval expires, MR transmission is required, so that even if the discontinuous interval is terminated early, the probability of reporting the CGI of the neighboring cell to the serving base station increases.

By transmitting the measurement report (MR) according to the event, the periodic report timer (periodical report timer) is a certain period expires (S390).

Here, in step S340 of transmitting a measurement report (MR) according to an event, the periodic interval of the report period (T, total) of step S370 of periodically transmitting a measurement report (MR) according to an event again time difference). In addition, from step S350 for receiving a CDRX configuration and CGI request from the base station, the T321 timer is started and the CGI information reporting is performed before the T321 timer expires. T321 is called a CGI reporting cycle according to the CGI reporting timer. .

In the present invention, since the UE stores neighboring cell broadcasting channel (BCH) decoding information, it may transmit a neighbor cell (Ncell) CGI report before the timer T321 expires. Therefore, according to the present invention, the UE may increase the probability of reporting the CGI for the neighbor cell during ANR in the LTE system.

In the related art, after receiving a CGI request from a serving base station to report a CGI, the broadcasting channel of the neighboring cell is decoded. However, the present invention stores broadcasting channel decoding information of the neighboring cell in advance. Report CGI. As such, the UE may perform CGI reporting by using the broadcasting channel decoding information of the neighboring base station previously received from the serving base station. Therefore, the UE has a higher probability of transmitting to the serving base station in the discontinuous reception (DRX) section in which CGI reporting is possible, and is performed before going to the continuous reception section by an event requesting a measurement report from the serving base station, thereby performing CGI reporting. Even if it is disturbed by the MR report according to the event trigger, in the present invention, the UE can report the CGI of the neighbor base station to the serving base station.

In addition, if the broadcasting channel of the neighboring cell is decoded in advance, the decoding of the broadcasting channel can be expected to determine the adjacent cell due to a cell detection error that does not actually exist.

4 is a diagram schematically illustrating a device configuration of a terminal, a base station, and the like according to an embodiment of the present invention.

In FIG. 4, the terminal 100 and the base station 150 may include RF units 110 and 160, processors 120 and 170, and optionally memories 130 and 180, respectively. Each of the RF units 110 and 160 may include transmitters 111 and 161 and receivers 112 and 162. For example of the terminal 100, the transmitter 111 and the receiver 112 are configured to transmit and receive signals with the base station 150, and the processor 120 is functionally functional with the transmitter 111 and the receiver 112. In connection, the transmitter 111 and the receiver 112 may be configured to control a process of transmitting and receiving signals with other devices.

The processor 120 controls the receiving unit to (a) receive a connection reset request message including discontinuous reception (DRX) configuration information from the first base station, and (b) broadcast channel of the second base station. Decode the information, and store the broadcasting channel information of the second base station, and (c) send the connection reset request message including the request for the discontinuous reception configuration information and the cell global identity (CGI) information to the first base station. And control the receiving unit to receive from the device, and (d) report the CGI information to the first base station based on the stored broadcasting channel information. In addition, the processor 120 may perform various types of processing on the signal to be transmitted and then transmit the signal to the transmitter 111, and may perform processing on the signal received by the receiver 112. If necessary, the processor 120 may store information included in the exchanged message in the memory 130. With this structure, the terminal 100 can perform the method of the above-described various embodiments.

The transmitter 161 and the receiver 162 of the base station 150 are configured to transmit and receive signals with other base stations, servers, and terminals, and the processor 170 is functionally connected with the transmitter 161 and the receiver 162. The transmitter 161 and the receiver 162 may be configured to control a process of transmitting and receiving a signal with other devices. In addition, the processor 170 may perform various processes on a signal to be transmitted, transmit the signal to the transmitter 161, and perform processing on the signal received by the receiver 162. If necessary, the processor 170 may store information included in the exchanged message in the memory 130. The processor 170 controls the transmitter to (a) transmit a connection reset request message including discontinuous reception (DRX) configuration information to a terminal, and (b) the discontinuous reception configuration information and a CGI (cell). controlling the transmitter to transmit a connection reset request message including a request for global identity) information to the terminal, and (c) receiving the CGI information report from the terminal based on the stored broadcasting channel information of the second base station. The receiving unit is controlled so that the broadcasting channel information of the second base station is stored by the terminal decoding the broadcasting channel information of the second base station. With this structure, the base station 150 may perform the methods of the various embodiments described above.

Processors 120 and 170 of the terminal 110 and the base station 150 respectively instruct (eg, control, coordinate, manage, etc.) operations at the terminal 110 and the base station 150, respectively. Each of the processors 120 and 170 may be connected to memories 130 and 180 that store program codes and data. The memories 130 and 180 are coupled to the processors 120 and 170 to store operating systems, applications, and general files.

Processors 120 and 170 may also be referred to as controllers, microcontrollers, microprocessors, microcomputers, and the like. The processors 120 and 170 may be implemented by hardware or firmware, software, or a combination thereof. (DSP), digital signal processing devices (DSPDs), programmable logic devices (PLDs), and the like may be used to implement embodiments of the present invention using hardware, , FPGAs (field programmable gate arrays), and the like may be provided in the processors 120 and 170.

Meanwhile, when implementing embodiments of the present invention using firmware or software, the firmware or software may be configured to include a module, a procedure, or a function for performing the functions or operations of the present invention, and to perform the present invention. Firmware or software configured to be may be included in the processors 120 and 170 or may be stored in the memories 130 and 180 to be driven by the processors 120 and 170.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art. It will be understood that various modifications and changes may be made without departing from the spirit and scope of the invention. The above embodiments are only to be understood as technical idea, and should not be construed as being limited thereto. Accordingly, the scope of the present invention is not limited by the specific embodiments, but is determined by the claims, and changes in the future embodiments of the present invention will not depart from the technology of the present invention.

Claims (8)

In the method for the terminal reports cell global identity (CGI) information in a wireless communication system,
(a) receiving broadcasting channel information of a second base station in a discontinuous reception interval set by the first base station;
(b) acquiring CGI information of the second base station from the broadcasting channel information in advance in the absence of a CGI information request from the first base station;
(c) after receiving the broadcasting channel information of the second base station, receiving from the first base station a connection reconfiguration request message including discontinuous reception configuration information and a CGI information request; And
(d) reporting, according to the connection reset request message, CGI information of the second base station to the first base station;
How to report CGI information. The process of claim 1 wherein, between steps (b) and (c),
Receiving from the first base station a connection reset request message including measurement report configuration information;
How to report CGI information. 3. The method of claim 2,
And performing a measurement report to the first base station according to the measurement report configuration information at regular intervals.
How to report CGI information. The method of claim 1, wherein step (d) is performed in a discontinuous reception section between the terminal and the first base station according to the discontinuous reception configuration information.
How to report CGI information. In a terminal for reporting cell global identity (CGI) information in a wireless communication system,
Receiving unit for receiving a wireless signal;
A transmitter for transmitting a wireless signal;
A processor for processing data; And
Including a memory unit,
The processor may be configured to (a) control the receiver to receive the broadcasting channel information of the second base station in the discontinuous reception interval set by the first base station, and (b) in the absence of a CGI information request from the first base station. And obtaining CGI information of the second base station from the broadcasting channel information in advance, and (c) after receiving the broadcasting channel information of the second base station, the connection including discontinuous reception configuration information and a CGI information request. Control the receiving unit to receive a reset request message from the first base station, and (d) control the transmitting unit to report CGI information of the second base station to the first base station according to the connection reset request message;
Terminal. Between the executions of paragraphs 5 (b) and (c),
The processor is configured to control the receiver to receive a connection reset request message from the first base station that includes measurement report configuration information;
Terminal. The method according to claim 6,
The processor is configured to control the transmitting unit to measure report to the first base station at a predetermined period according to the measurement report configuration information;
Terminal. 6. The method of claim 5,
(D) performance of the processor is performed in a discontinuous reception interval between the terminal and the first base station according to the discontinuous reception configuration information.
Terminal.

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