CN110536369B

CN110536369B - Device and method for simultaneously acquiring TAC (cell identity) and CI (cell identity) information of LTE (long term evolution) main adjacent cell

Info

Publication number: CN110536369B
Application number: CN201910890492.9A
Authority: CN
Inventors: 刘建伟
Original assignee: Shenzhen Morning News Material Union Technology Co ltd
Current assignee: Shenzhen Morning News Material Union Technology Co ltd
Priority date: 2019-09-20
Filing date: 2019-09-20
Publication date: 2021-07-27
Anticipated expiration: 2039-09-20
Also published as: CN110536369A

Abstract

The invention discloses a device and a method for simultaneously acquiring TAC (cell identity) and CI (cell identity) information of an LTE (long term evolution) main adjacent cell, wherein the device comprises a main control unit, a main cell unit and an adjacent cell unit; the main cell unit is used for executing main cell residence and information acquisition operation; the adjacent cell unit is used for executing the forced residence and information acquisition operation of the adjacent cell; by the device and the method for simultaneously acquiring the TAC and CI information of the LTE main adjacent cell, not only can the detailed information of the main cell be acquired, but also the TAC, CI and other information of the adjacent cell can be captured in real time, the accuracy and the integrity of data can be ensured, the normal cell switching and reselection processes of the cell are not influenced, and the current LTE network environment is reflected in real time.

Description

Device and method for simultaneously acquiring TAC (cell identity) and CI (cell identity) information of LTE (long term evolution) main adjacent cell

Technical Field

The invention relates to the technical field of communication, in particular to a device and a method for simultaneously acquiring TAC (cell identity) and CI (cell identity) information of an LTE (long term evolution) main adjacent cell.

Background

TAC (The tracking area code) and CI (Cell-ID Cell ID) can be used to uniquely identify a base station, and all base station-based positioning applications require this critical information.

In the default wireless communication signaling of the 3GPPLTE, the SIB message only contains the TAC and CI information of the main cell and does not contain the TAC and CI information of the adjacent cell; SIB4 and SIB5 contain only summary information such as EARFCN (E-UTRA Absolute Radio Frequency Channel Number) and PCI (Physical Cell Identifier) of neighboring cells. For some applications based on the location of the base station, the data is not comprehensive enough, affecting accuracy.

Disclosure of Invention

The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides a device and a method for simultaneously acquiring TAC and CI information of an LTE main adjacent cell, and aims to solve the problem that only the TAC/CI of the main cell cannot be acquired under the traditional condition.

The technical scheme is as follows: in order to achieve the above object, the apparatus for simultaneously acquiring TAC and CI information of LTE primary and neighboring cells of the present invention includes:

the main control unit comprises a central processing module a, a service processing module a, a serial port transceiving module a and a storage module a, wherein the service processing module a, the serial port transceiving module a and the storage module a are electrically connected with the central processing module a;

a primary cell unit for performing primary cell camping and information acquisition operations; the wireless communication device comprises a central processing module b, a wireless communication module b, a serial port transceiving module b and a storage module b, wherein the wireless communication module b, the serial port transceiving module b and the storage module b are electrically connected with the central processing module b; the serial port transceiver module b is connected with the serial port transceiver module a;

a neighbor cell unit for performing neighbor cell forced camping and information acquisition operations; the wireless communication device comprises a central processing module c, a wireless communication module c, a serial port transceiving module c and a storage module c, wherein the wireless communication module c, the serial port transceiving module c and the storage module c are electrically connected with the central processing module c; the serial port transceiver module c is connected with the serial port transceiver module a.

Furthermore, the primary cell unit has the functions of PLMN selection, cell reselection, paging monitoring, system message reception, cell measurement, and DRX control.

Further, the neighboring cell unit supports all LTE bands.

A method for simultaneously acquiring TAC and CI information of an LTE main adjacent cell is applied to the device for simultaneously acquiring the TAC and CI information of the LTE main adjacent cell, and comprises the following steps:

the main cell unit acquires TAC (cell identity) and CI (cell identity) information of a main cell and an adjacent cell list in the current LTE (long term evolution) network and reports the acquired information to the main control unit; the neighbor cell list comprises EARFCN and PCI information of each neighbor cell;

the main control unit receives the information obtained by the main cell unit and sends the information to the adjacent cell unit;

the adjacent cell unit acquires corresponding TAC and CI information of the adjacent cell according to the EARFCN and PCI information;

and the adjacent cell unit reports the acquired TAC and CI information of the adjacent cell to the main control unit.

Further, the acquiring, by the primary cell unit, TAC and CI information of the primary cell in the current LTE network and the neighbor cell list includes:

a main cell unit initiates a resident cell request of a main cell;

the main cell unit acquires the TAC and CI information of the main cell according to the SIB1 message of the main cell;

and the main cell unit obtains a neighbor cell list according to the SIB4/SIB5 message of the main cell, wherein the neighbor cell list comprises EARFCN and PCI information of each neighbor cell.

Further, the initiating, by the primary cell unit, a cell camping request of the primary cell includes:

the central processing module b generates a random number;

the central processing module b generates sessionID according to the random number;

and the central processing module b sends the main cell residence request information containing the sessionID through the wireless communication module b.

Further, the receiving, by the master control unit, the information obtained by the master cell unit and sending the information to the neighboring cell unit includes:

the main control unit inquires and judges whether the reported data is received or not;

if so, judging whether the data is legal, otherwise, discarding the data and carrying out the next round of inquiry;

and when the data is legal, the main control unit sends a data packet containing the information of the adjacent cell to the adjacent cell unit through the serial port transceiving module a at intervals of set duration.

Further, the obtaining, by the neighboring cell unit, TAC and CI information of a corresponding neighboring cell according to the EARFCN and PCI information includes:

the central processing module c receives the data packet issued by the main control unit through the serial port transceiving module c;

the central processing module c judges whether the received data is legal, if so, the following steps are continuously executed, otherwise, the data packet is discarded;

the central processing module c judges whether the information of the adjacent cells related in the data packet exists in the storage module c;

if yes, the central processing module c directly acquires the TAC and CI information of the adjacent cell from the storage module c;

otherwise, the central processing module c forces the corresponding neighboring cell to reside through the wireless communication module c according to the EARFCN and PCI information to obtain the MIB and SIB1 information of the neighboring cell;

the central processing module c decodes the MIB and SIB1 information to obtain TAC and CI information of the neighboring cell;

and the central processing module c writes the TAC and CI information of the adjacent cell into the storage module c.

Has the advantages that: the device and the method for simultaneously acquiring the TAC and CI information of the LTE main adjacent cell have the following advantages:

(1) the general information of the main area and the adjacent area of the LTE network where the current terminal resides is obtained in real time, and the normal cell switching of the terminal can be accurately reflected.

(2) And accurately acquiring the detailed information of the current surrounding base station in real time.

(3) And reporting the detected base station information in real time.

By the device and the method for simultaneously acquiring the TAC and CI information of the LTE main adjacent cell, not only can the detailed information of the main cell be acquired, but also the TAC, CI and other information of the adjacent cell can be captured in real time, the accuracy and the integrity of data can be ensured, the normal cell switching and reselection processes of the cell are not influenced, and the current LTE network environment is reflected in real time.

Drawings

FIG. 1 is a schematic diagram of a device for simultaneously acquiring TAC and CI information of LTE primary and neighboring cells;

FIG. 2 is a schematic flow chart of a method for simultaneously acquiring TAC and CI information of an LTE main adjacent cell according to the present invention;

FIG. 3 is a flow chart of the main control unit initiating a main cell information query;

FIG. 4 is a flow chart of the primary cell unit processing information query in accordance with the present invention;

FIG. 5 is a flow chart of the main control unit processing results from a primary cell query in accordance with the present invention;

fig. 6 is a flow chart of the neighbor cell unit processing information query according to the present invention.

In the figure: 1-a main control unit; 11-central processing module a; 12-a service processing module a; 13-serial port transceiver module a; 14-memory module a; 2-primary cell unit; 21-central processing module b; 22-wireless communication module b; 23-serial port transceiver module b; 24-storage module b; 3-neighbor cell unit; 31-central processing module c; 32-wireless communication module c; 33-serial port transceiver module c; 34-storage module c.

Detailed Description

The present invention will be further described with reference to the accompanying drawings.

The device for simultaneously acquiring TAC and CI information of LTE primary and neighboring cells (hereinafter, referred to as "information acquisition device") as shown in fig. 1 includes a primary control unit 1, a primary cell unit 2, and a neighboring cell unit 3;

the main control unit 1 includes a central processing module a11, a service processing module a12 electrically connected to the central processing module a11, a serial port transceiver module a13, and a memory module a 14. The central processing module a11 is a processing core of the whole device, and can schedule and control the operation and data interaction between other modules; the service processing module a12 is a module for interacting with a human, a human can send a service command to the central processing module a11 through the service processing module a12, the central processing module a11 can feed back a data result to a user through the service processing module a12 after completing a task, and the service processing module a12 can include a button, a touch screen and other common human-computer interaction elements. The serial port transceiving module a13 is used for communicating with other modules, and the storage module a14 is used for storing data.

A primary cell unit 2 for performing primary cell camping and information acquisition operations; it comprises a central processing module b21, a wireless communication module b22, a serial port transceiver module b23 and a memory module b24 which are electrically connected with the central processing module b 21; the serial port transceiving module b23 is connected with the serial port transceiving module a13, and data transmission can be performed between the serial port transceiving module b23 and the serial port transceiving module a 13. The central processing module b21 is configured to process a task assigned to the master cell unit 2 by the master control unit 1 through the serial port transceiver module b23, and report the obtained data to the master control unit 1 through the serial port transceiver module b 23; the wireless communication module b22 is used for communicating with the primary cell base station; the storage module b24 is used to temporarily store data received by the wireless communication module b 22. Preferably, as shown in fig. 4, the primary cell unit 2 has 3GPP standard flow functions such as PLMN selection, cell reselection, paging monitoring, system message reception, cell measurement, DRX control, and the like, and can perform network camping and cell switching operations.

A neighboring cell unit 3 configured to perform a neighboring cell forced camping and information acquisition operation; it includes a central processing module c31, a wireless communication module c32, a serial port transceiver module c33 and a memory module c34 which are electrically connected with the central processing module c 31; the serial port transceiver module c33 is connected to the serial port transceiver module a13, and data transmission can be performed between the serial port transceiver module c33 and the serial port transceiver module a 13. The central processing module c31 is configured to process a task assigned to the neighboring cell unit 3 by the main control unit 1 through the serial port transceiver module c33, and report the obtained data to the main control unit 1 through the serial port transceiver module c 33; the wireless communication module c32 is used for communicating with the adjacent cell base station; the storage module c34 is used to temporarily store data received by the wireless communication module c 32. The neighboring cell unit 2 implements the forced camping function of a specific neighboring cell by using software and radio frequency synchronization processing, and can acquire the SIB1 containing the scheduling information of cell access information/cell selection information/other SIBs for this cell. The software has good applicability, supports all LTE frequency bands of three operators (mobile, Unicom and telecom), supports FDD-LTE and TDD-LTE, and meets the actual service requirements of various users.

Based on the device for simultaneously acquiring TAC and CI information of the LTE primary and neighboring cells, the present invention also provides a method for simultaneously acquiring TAC and CI information of the LTE primary and neighboring cells, which specifically includes the following steps S401 to S404:

step S401, a main cell unit 2 acquires TAC, CI information and an adjacent cell list of a main cell in the current LTE network, and reports the acquired information to a main control unit 1; the neighbor cell list comprises EARFCN and PCI information of each neighbor cell;

step S402, the main control unit 1 receives the information obtained by the main cell unit 2 and sends the information to the adjacent cell unit 3;

step S403, the adjacent cell unit 3 obtains corresponding TAC and CI information of the adjacent cell according to the EARFCN and PCI information;

in step S404, the neighboring cell unit 3 reports the acquired TAC and CI information of the neighboring cell to the main control unit 1.

Specifically, as shown in fig. 3, the step S401 of acquiring the TAC, CI information and neighbor cell list of the primary cell in the current LTE network by the primary cell unit 2 includes the following steps S501 to S503:

step S501, a main cell unit 2 initiates a resident cell request of a main cell;

in this step, the step of the primary cell unit 2 initiating the cell camping request of the primary cell specifically includes the following steps S501a-S501 c:

step S501a, the central processing module b21 generates a random number;

step S501b, the central processing module b21 generates sessionID according to the random number;

in this step, the sessionID includes information such as generation time and device ID in addition to the random number, which not only ensures that sessionids for accessing the base station of the primary cell do not overlap, but also enables the base station of the primary cell to obtain necessary information (such as generation time and device ID) from the sessionID.

In step S501c, the central processing module b21 sends the primary cell camping request information including the sessionID through the wireless communication module b 22.

In this step, the primary cell residence request information includes a mode, tmo, and other parameters besides the sessionID, where the mode parameter is used to identify that there is no other query process after the query of the current round, where a mode 0 may be used to refer to another query process after the query of the current round, and a mode 1 refers to a mode 1 may be used to refer to no other query process after the query of the current round, because query work of multiple services is generally required, therefore, the mode parameter is used to refer to whether there is a subsequent query task, so that the primary cell unit 2 can prepare for executing a next query task after completing one query task when the mode is 0, and the primary cell unit 2 can know that there is no other subsequent query task when the mode is 1, and can control the entire primary cell unit 2 to enter dormancy after completing the query task. tmo is a timeout duration parameter, such as 5 s. After step S501c, the central processing module b21 may determine whether the primary cell camping is successful according to the feedback data of the primary cell base station or whether the feedback data is received, if the primary cell camping is successful, continue to execute the following steps S502-S503, if the primary cell camping is unsuccessful, wait, and re-initiate a round of primary cell camping request when the waiting time exceeds the set timeout duration and is still unsuccessful, as shown in fig. 4, when the primary cell camping is failed, the primary cell unit 2 sequentially executes PLMN selection, cell reselection, paging monitoring, system message reception, and cell measurement processes, and determines whether the primary cell camping is successful again, and continues to execute the following steps S502-S503.

Step S502, the main cell unit 2 acquires the TAC and CI information of the main cell according to the SIB1 message of the main cell;

step S503, the primary cell unit 2 obtains a neighboring cell list according to the SIB4/SIB5 message of the primary cell, where the neighboring cell list includes EARFCN and PCI information of each neighboring cell.

As shown in fig. 3, the data format reported when the obtained information is reported to the main control unit 1 in step S401 is MainTAC, CI, n1_ arfcn, n1_ PCI, n2_ arfcn, n2_ PCI …, where MainTAC and CI represent the cell tracking code and the cell ID of the main cell, n1_ arfcn, n1_ PCI represent the EARFCN and PCI information of the first neighboring cell, and so on.

Further, as illustrated in fig. 5, the step S402 in which the main control unit 1 receives the information obtained by the primary cell unit 2 and sends the information to the neighboring cell unit 3 includes the following steps S601-S603:

step S601, the main control unit 1 inquires and judges whether the reported data is received;

in this step, the main control unit 1 starts to query whether the reported data is received after a certain delay (e.g. 3s) after issuing a round of query task to the main cell unit 2, and issues a next round of query repeated unsuccessful query task after a certain timeout duration (e.g. 10s timeout duration in this embodiment as shown in fig. 5) if the reported data is not received.

Step S602, if yes, judging whether the data is legal, otherwise discarding the data to perform the next round of inquiry;

step S603, when the data is legal, the main control unit 1 sends a data packet containing information of the neighboring cell to the neighboring cell unit 3 through the serial port transceiver module a13 every set time period.

In this step, as shown in fig. 5, the data packet sent by the main control unit 1 to the neighboring cell unit 3 includes the following contents: mode, Main _ tac, Main _ ci, n _ next _ arfcn, and n _ next _ pci, where Mode is a process identification parameter, Mode is 0 indicating that information of other neighboring cells needs to be queried after the current round of query, and Mode is 0 indicating that no information of other neighboring cells needs to be queried after the current round of query; the identifier parameter enables the neighboring cell unit 3 to make preparation for executing the next round of query task after completing one round of query task when the mode is 0, and the neighboring cell unit 3 can know that no other query task exists subsequently when the mode is 1, and can control the whole neighboring cell unit 3 to enter the dormant state after completing the round of query task. Main _ TAC, Main _ CI represents TAC and CI information of the Main cell, n _ next _ arfcn, and n _ next _ PCI represents EARFCN and PCI information of the nth neighbor cell. In this embodiment, the main control unit 1 issues a resident data packet of an adjacent cell every 500ms, and after the data packet is issued, determines whether all data packets of the adjacent cell are issued in this round (determined by the value of the Mode parameter), and if not, continues to issue the data packet that is not issued.

Further, as shown in fig. 6, the neighboring cell unit 3 obtains TAC and CI information of corresponding neighboring cells according to the EARFCN and PCI information includes the following steps S701 to S707:

step S701, a central processing module c31 receives a data packet sent by the main control unit 1 through the serial port transceiver module c 33;

step S702, the central processing module c31 determines whether the received data is legal, if so, the following steps are continuously executed, otherwise, the data packet is discarded;

step S703, the central processing module c31 determines whether the neighbor cell information related to the data packet exists in the storage module c34, if yes, step S704 is performed, otherwise step S705 is performed;

step S704, the central processing module c31 directly obtains the TAC and CI information of the neighboring cell from the storage module c 34;

in this step, since the services generally processed by the information acquiring apparatus are far more than services of one cell, the storage unit c34 of the neighboring cell unit 3 stores information data of the neighboring cell acquired in many times of the historical query task processes, so that TAC and CI information corresponding to the EARFCN and PCI information can be directly queried from the historical data in the storage unit c34 according to the EARFCN and PCI information, thereby greatly saving the data acquiring time and improving the efficiency of acquiring TAC and CI information of the neighboring cell.

Step S705, the central processing module c31 forces the corresponding neighboring cell to camp on through the wireless communication module c32 according to the EARFCN and PCI information to obtain the MIB and SIB1 information of the neighboring cell;

step S706, the central processing module c31 decodes the MIB and SIB1 information to obtain the TAC and CI information of the neighboring cell;

in step S707, the central processing module c31 writes the TAC and CI information of the neighboring cell into the storage module c 34.

In this step, the TAC and CI information of the neighboring cell stored in the storage module c34 may be used as historical data for later service inquiry. The form of the write data is: and n _ TAC, n _ CI, n _ arfcn and n _ PCI respectively represent the TAC, CI, EARFCN and PCI data of the nth adjacent cell, and the TAC and CI information can be directly inquired through the EARFCN and PCI information subsequently.

In the step S705, the forcibly camping the corresponding neighboring cell includes: firstly, the central processing module c31 sets the priority for each frequency point number, sets the priority of EARFCN value contained in the data packet as the highest value, sets the priority of other frequency point numbers as the lowest value, and the highest value is far higher than the lowest value; then, the residing request is sent to a target adjacent cell corresponding to the EARFCN and PCI information in the data packet; then, receiving cell access information fed back by the target neighbor cell, judging whether the cell is camped successfully, if yes, starting a verification process (aiming at verifying whether the neighbor cell camped successfully is a pseudo base station), if the verification is passed, continuously acquiring scheduling information such as MIB (management information base station) and SIB (system information block) 1 information from the neighbor cell, otherwise, re-performing the next round of camping request, wherein the designated frequency point number (namely EARFCN information in the data packet) has the highest priority and is far higher than the priorities of other frequency point numbers, so that when the next round of camping request is performed again, the neighbor cell unit 3 still sends the camping request to the target neighbor cell corresponding to EARFCN and PCI information in the data packet, and the cell process cannot be reselected to cause the cell to camp to other neighbor cells; when the multiple residence requests are not successful, the residence conditions of the adjacent cells are obtained from the target adjacent cell broadcast messages, whether the adjacent cell units 3 meet the residence conditions or not is judged, when the conditions are met and residence is not successful, the adjacent cell units 3 feed back fault information to the main control unit 1, when the residence conditions are not met, the adjacent cell units 3 feed back the unavailable information to the main control unit 1, a user can obtain the feedback information from the main control unit 1, if the fault information does not exist, technicians can be contacted to check and repair faults of the base station, and if the information cannot be obtained, the technicians can obtain the adjacent cells which cannot obtain the information by using other measuring equipment and manually input the adjacent cells into the storage unit a14 of the main control unit 1. In reality, the service capacity of a few cell base stations is very low, and the residence request of the neighboring cell unit 3 cannot be accepted, so in the above process, the neighboring cell unit 3 is defaulted to meet the residence conditions of all neighboring cells, and it is detected whether the neighboring cell unit 3 meets the residence conditions until forced residence failure, so that the efficiency of the neighboring cell unit 3 in residence and information acquisition can be improved.

Preferably, the verification process includes: firstly, the adjacent cell unit 3 judges whether the cell access information contains first verification data, if so, next-layer verification is carried out, otherwise, the adjacent cell which successfully resides is proved to be a pseudo base station, and the information of the pseudo base station is reported to the main control unit 1; then, the neighboring cell unit 3 generates second verification data according to the first verification data, and sends the second verification data to the neighboring cell where the second verification data resides successfully; then, the neighboring cell unit 3 receives the data fed back by the neighboring cell where the camping is successful and judges whether the data is consistent with the expected value, if so, the neighboring cell where the camping is successful can be judged to pass the verification, otherwise, the neighboring cell where the camping is successful is proved to be a pseudo base station, and the information of the pseudo base station is reported to the main control unit 1. By adopting the verification mode, the respective legality can be verified in two directions between the adjacent cell unit 3 and the target adjacent cell, the legality of the acquired information such as the TAC and the CI of the adjacent cell is ensured, and the interference of a pseudo base station is eliminated.

The device and the method for simultaneously acquiring the TAC and CI information of the LTE main adjacent cell have the following advantages that:

(1) the method comprises the steps of acquiring the main area (TAC, CI, EARFCN, PCI, RSRP, RSSI and RSRQ) and the neighbor cell summary information (EARFCN, PCI, RSRP, RSSI and RSRQ) of the LTE network where the current terminal resides in real time, and accurately reflecting normal cell switching of the terminal.

(2) And accurately acquiring detailed information of the current peripheral base station in real time, wherein the detailed information comprises parameters such as TAC, CI, EARFCN, PCI, RSRP, RSSI, RSRQ and the like.

(3) And reporting the detected base station information in real time.

The above description is only of the preferred embodiments of the present invention, and it should be noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the invention and these are intended to be within the scope of the invention.

Claims

1. A method for simultaneously acquiring TAC and CI information of LTE primary and neighboring cells is applied to a device for simultaneously acquiring the TAC and CI information of the LTE primary and neighboring cells, and the device comprises:

a neighbor cell unit for performing neighbor cell forced camping and information acquisition operations; the wireless communication device comprises a central processing module c, a wireless communication module c, a serial port transceiving module c and a storage module c, wherein the wireless communication module c, the serial port transceiving module c and the storage module c are electrically connected with the central processing module c; the serial port transceiver module c is connected with the serial port transceiver module a;

the method comprises the following steps:

the adjacent cell unit reports the acquired TAC and CI information of the adjacent cell to the main control unit;

the neighboring cell unit acquires corresponding TAC and CI information of the neighboring cell according to the EARFCN and PCI information, and the information includes:

otherwise, the central processing module c performs forced camping on the corresponding neighboring cell through the wireless communication module c according to the EARFCN and PCI information to obtain MIB and SIB1 information of the neighboring cell, wherein the forced camping on the corresponding neighboring cell to obtain MIB and SIB1 information of the neighboring cell includes: firstly, the central processing module c sets the priority for each frequency point number, sets the priority of the EARFCN value contained in the data packet as the highest value, sets the priority of other frequency point numbers as the lowest value, and the highest value is far higher than the lowest value; then, the residing request is sent to a target adjacent cell corresponding to the EARFCN and PCI information in the data packet; then, receiving cell access information fed back by the target neighbor cell, judging whether the residence is successful, if so, starting a verification process, if so, continuously acquiring the information of the MIB and the SIB1 from the neighbor cell, otherwise, re-performing the next residence request;

2. The method of claim 1, wherein the primary cell unit has functions of PLMN selection, cell reselection, paging monitoring, system message reception, cell measurement, and DRX control.

3. The method of claim 1, wherein the neighbor cell unit supports all LTE bands.

4. The method of claim 1, wherein the acquiring TAC and CI information of a primary cell and CI information of a neighboring cell of an LTE network by the primary cell unit comprises:

a main cell unit initiates a resident cell request of a main cell;

5. The method of claim 1, wherein the initiating, by the primary cell unit, a cell camping request of a primary cell includes:

the central processing module b generates a random number;

6. The method of claim 1, wherein the step of the main control unit receiving the information obtained by the main cell unit and sending the information to the neighboring cell unit comprises: