CN111586692A - Method and device for positioning CDMA pseudo base station - Google Patents
Method and device for positioning CDMA pseudo base station Download PDFInfo
- Publication number
- CN111586692A CN111586692A CN202010344657.5A CN202010344657A CN111586692A CN 111586692 A CN111586692 A CN 111586692A CN 202010344657 A CN202010344657 A CN 202010344657A CN 111586692 A CN111586692 A CN 111586692A
- Authority
- CN
- China
- Prior art keywords
- base station
- pseudo base
- cdma
- processing module
- configuration parameters
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W12/00—Security arrangements; Authentication; Protecting privacy or anonymity
- H04W12/12—Detection or prevention of fraud
- H04W12/121—Wireless intrusion detection systems [WIDS]; Wireless intrusion prevention systems [WIPS]
- H04W12/122—Counter-measures against attacks; Protection against rogue devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/003—Locating users or terminals or network equipment for network management purposes, e.g. mobility management locating network equipment
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Computer Security & Cryptography (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides a method and a device for positioning a CDMA pseudo base station, which comprise the following steps: searching base station signals one by one according to the configured CDMA frequency points, and determining whether the base station signals exist; the method comprises the steps of performing despreading, demodulation and decoding on a downlink broadcast channel of a frequency point and a PN _ OFFSET determined to have a base station signal to obtain configuration parameters of the frequency point and the PN _ OFFSET; carrying out pseudo base station discrimination on the configuration parameters by using a pseudo base station identification algorithm according to the acquired configuration parameters; the base station which is judged as the pseudo base station is matched with a directional antenna to analyze and display the downlink broadcast signals in real time, and gradually approaches to the base station according to the downlink signal intensity until the accurate position of the CDMA pseudo base station is determined; the configuration parameters and the position information of the CDMA pseudo base station with the determined position are stored to form a pseudo base station database, so that the problem that the CDMA pseudo base station cannot be positioned in the prior art is solved, the CDMA pseudo base station can be quickly identified and positioned, and an efficient technical means is provided for operators and law enforcement departments to attack illegal CDMA pseudo base stations.
Description
Technical Field
The invention relates to the technical field of communication safety, in particular to a method and a device for positioning a CDMA pseudo base station.
Background
With the development of science and technology and the progress of communication technology, mobile terminals gradually become necessities of people's lives, and the mobile terminals have more and more purposes in the lives of people. Mobile terminals typically communicate via base stations, which are a form of radio stations, that is, radio transceiver stations for information transfer with mobile terminals via a mobile switching center in a certain radio coverage area.
The method comprises the steps that a CDMA pseudo base station can imitate a legal adjacent cell of a current base station due to certain defects and loopholes existing in current CDMA network authentication, the CDMA pseudo base station utilizes the advantage that the transmitting power of the CDMA pseudo base station is larger than that of the base station to trick a user terminal into position updating to obtain identity parameters of a user, the user terminal is made to reside under the CDMA pseudo base station, advertisement information can be pushed to the CDMA pseudo base station or fraud short messages can be sent to the CDMA pseudo base station by utilizing the obtained user identity information, the identity information of the user is revealed, certain safety risks are brought to the user, normal communication services cannot be carried out by the user, and even property loss is brought to the user.
At present, the GSM pseudo base station positioning technology is researched a lot and is mature, and the GSM pseudo base station can be positioned quickly and accurately, but there is no effective method for positioning the CDMA pseudo base station at present.
Disclosure of Invention
The invention discloses a method and a device for positioning a CDMA pseudo base station, which solve the problem that the positioning of the CDMA pseudo base station cannot be realized in the prior art, can quickly identify and position the CDMA pseudo base station, and provide an efficient technical means for operators and law enforcement departments to attack illegal CDMA pseudo base stations.
In order to achieve the purpose, the technical scheme of the invention is realized as follows:
the invention provides a CDMA pseudo base station positioning method on one hand, which comprises the following steps:
s100: searching base station signals one by one according to the configured CDMA frequency points, and determining whether the base station signals exist;
s101: the method comprises the steps of performing despreading, demodulation and decoding on a downlink broadcast channel of a frequency point and a PN _ OFFSET determined to have a base station signal to obtain configuration parameters of the frequency point and the PN _ OFFSET;
s102: carrying out pseudo base station discrimination on the configuration parameters by using a pseudo base station identification algorithm according to the acquired configuration parameters;
s103: the base station which is judged as the pseudo base station is matched with a directional antenna to analyze and display the downlink broadcast signals in real time, and gradually approaches to the base station according to the downlink signal intensity until the accurate position of the CDMA pseudo base station is determined;
s104: and storing the configuration parameters and the position information of the CDMA pseudo base station with the determined position to form a pseudo base station database.
Further, in S100, on each configured CDMA frequency point, the pilot searcher searches for all PN _ OFFSETs on the frequency point one by one using the local correlator to obtain an Ec/Io value of each PN _ OFFSET, and if the Ec/Io value of the PN _ OFFSET satisfies a demodulation threshold, it is determined that pilot acquisition on the PN _ OFFSET is successful, and synchronization channel acquisition is performed on the PN _ OFFSET where pilot acquisition is successful, and it is determined that the pilot acquisition is a base station signal in normal synchronization.
Further, the synchronization channel acquisition uses a method of outputting a 64-order Walsh code using a Walsh code generator, performing Walsh32 demodulation on PN _ OFFSET by a RAKE receiver, and reading a synchronization channel message.
Further, the synchronization channel message includes a system identifier, a network identifier, PN _ OFFSET, a paging channel rate, and a carrier frequency.
Further, the method for obtaining the configuration parameters is that after obtaining the synchronization channel message, the RAKE receiver continues to search the paging channel, and simultaneously performs 64-order walsh code demodulation, monitors the paging channel, and obtains the required configuration parameters.
The invention also discloses a CDMA pseudo base station positioning device, which comprises a downlink signal receiving module, a radio frequency processing module, a baseband processing module, a protocol processing module and a control module, wherein the downlink signal receiving module is used for receiving downlink signals of the base station and sending the received downlink signals of the base station to the radio frequency processing module; the radio frequency processing module is used for processing the received downlink signal of the base station and sending the processed downlink signal of the base station to the baseband processing module; the baseband processing module is used for processing the signal sent by the radio frequency processing module; the protocol processing module analyzes and processes the protocol of the signal in each downlink channel to obtain the base station configuration parameters borne by each downlink channel; the control module is used for controlling the radio frequency processing module, the baseband processing module and the protocol processing module.
Furthermore, the positioning device of the CDMA pseudo base station further includes a clock module, a satellite signal receiving module, and a display module, wherein the clock module is configured to provide a clock signal for the radio frequency processing module and the baseband processing module; the satellite signal receiving module is used for receiving satellite signals and providing clock signals for the clock module; and the display module is used for displaying the analysis result.
The beneficial technical effects are as follows:
1. the invention discloses a CDMA pseudo base station positioning method, which searches base station signals one by one according to configured CDMA frequency points and determines whether base station signals exist; the method comprises the steps of performing despreading, demodulation and decoding on a downlink broadcast channel of a frequency point and a PN _ OFFSET determined to have a base station signal to obtain configuration parameters of the frequency point and the PN _ OFFSET; carrying out pseudo base station discrimination on the configuration parameters by using a pseudo base station identification algorithm according to the acquired configuration parameters; the base station which is judged as the pseudo base station is matched with a directional antenna to analyze and display the downlink broadcast signals in real time, and gradually approaches to the base station according to the downlink signal intensity until the accurate position of the CDMA pseudo base station is determined; the configuration parameters and the position information of the CDMA pseudo base station with the determined position are stored to form a pseudo base station database, so that the problem that the CDMA pseudo base station cannot be positioned in the prior art is solved, the CDMA pseudo base station can be quickly identified and positioned, and an efficient technical means is provided for operators and law enforcement departments to attack illegal CDMA pseudo base stations;
2. the invention discloses a CDMA pseudo base station positioning device, which comprises a downlink signal receiving module, a radio frequency processing module, a baseband processing module, a protocol processing module and a control module, wherein the downlink signal receiving module is used for receiving a downlink signal of a base station and sending the received downlink signal of the base station to the radio frequency processing module; the radio frequency processing module is used for processing the received downlink signal of the base station and sending the processed downlink signal of the base station to the baseband processing module; the baseband processing module is used for processing the signal sent by the radio frequency processing module; the protocol processing module analyzes and processes the protocol of the signal in each downlink channel to obtain the base station configuration parameters borne by each downlink channel; the control module is used for controlling the radio frequency processing module, the baseband processing module and the protocol processing module, and an operator or an executive department can utilize the device to quickly position the CDMA pseudo base station in law enforcement.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic flow chart of a CDMA pseudo base station positioning method according to an embodiment of the present invention;
fig. 2 is a block diagram of a CDMA pseudo base station positioning apparatus according to an embodiment of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
The invention discloses a CDMA pseudo base station positioning method, which comprises the following steps:
s100: searching base station signals one by one according to the configured CDMA frequency points, and determining whether the base station signals exist;
specifically, on each configured CDMA frequency point, a pilot searcher is used to search for all PN _ OFFSETs (PN OFFSETs) on the frequency point one by using a local correlator to obtain an Ec/Io value of each PN _ OFFSET, if the Ec/Io value of one of the PN _ OFFSETs satisfies a demodulation threshold, it is considered that pilot acquisition on the PN _ OFFSET is successful, then synchronization channel acquisition is performed on the PN _ OFFSET where pilot acquisition is successful, and it is determined that the base station signal can be normally synchronized.
As a specific embodiment of the present invention, the method for acquiring the synchronization channel is to output a Walsh code of 64 th order (Walsh code ═ 32) by using a local Walsh code generator, and perform Walsh32 demodulation on PN _ OFFSET by a RAKE receiver, and since the synchronization channel is not scrambled by a long code, the synchronization channel message (SyncChannelMessage) can be read without descrambling, and specifically, the synchronization channel message mainly includes: system Identification (SID), Network Identification (NID), pilot OFFSET (PN _ OFFSET), paging channel rate, carrier frequency, long code STATE (LC _ STATE), system TIME (SYS _ TIME), etc., and sets its long code generator using the long code STATE value (LC _ STATE) extracted from the sync channel message and synchronizes its system TIME with the extracted system TIME (SYS _ TIME). Because the message sending of the synchronous channel is strictly aligned with the system timing, the state of the long code generator of the synchronous channel can be aligned with the state of the long code of the whole system, and preconditions are provided for acquiring other downlink channel messages in the follow-up realization.
S101: the method comprises the steps of performing despreading, demodulation and decoding on a downlink broadcast channel of a frequency point and a PN _ OFFSET determined to have a base station signal to obtain configuration parameters of the frequency point and the PN _ OFFSET;
as an embodiment of the present invention, a method for obtaining configuration parameters is: after obtaining the synchronization channel message, the RAKE receiver continues to search the paging channel (paging channel) for 64 th order walsh code (walsh code ═ 1) demodulation while monitoring the paging channel (paging channel) to obtain the desired system configuration message (ConfigMsg), which includes: access parameter messages (Access Parameters), System parameter messages (System Parameters Message), Channel List messages (CDMA Channel List Message), Extended System parameter messages (Extended Neighbor List Message), Extended Neighbor List messages (Extended System Parameters Message), and then the following Parameters are obtained from the obtained System configuration Message: the system identification code (SID), the network identification code (NID), the BASE station identification number (BASE _ ID), the Neighbor List (Neighbor List), the Extended Neighbor List (Extended Neighbor List), the registration area identification (REG _ ZONE), the BASE station longitude (BASE _ Long), the BASE station latitude (BASE _ Lat), the pilot addition threshold (T _ ADD), the pilot discard threshold (T _ DROP), etc., and these parameters are used to identify the pseudo BASE station.
S102: carrying out pseudo base station discrimination on the configuration parameters by using a pseudo base station identification algorithm according to the acquired configuration parameters;
specifically, parameters such as a system identification code (SID), a network identification code (NID), a BASE station identification number (BASE _ ID), a Neighbor List (Neighbor List), an Extended Neighbor List (Extended Neighbor List), a registration area identifier (REG _ ZONE), a BASE station longitude (BASE _ Long), a BASE station latitude (BASE _ Lat), a pilot addition threshold (T _ ADD), a pilot discard threshold (T _ DROP) and the like obtained from the paging channel message may be compared with system identification numbers (SID), network identification Numbers (NID) and registration area identifiers (REG _ ZONE) of surrounding BASE stations, and if they are not the same, they are scored as 1, and weighted as a1, a2 and A3, otherwise they are scored as 0; for a Neighbor List (Neighbor List) and an Extended Neighbor List (Extended Neighbor List), if the lists are empty, the score is 2, if the PN _ OFFSET in the Neighbor List and the Extended Neighbor List does not have a mutual Neighbor relationship with other base stations, the score is 1, otherwise, the score is 0, and the weights are a4 and a5 respectively; comparing and calculating the longitude (Base _ Long) and the latitude (Base _ Lat) of the Base station according to the current longitude and latitude, judging the longitude to be 1 if the distance is proper and meets the station distribution requirement, otherwise judging the longitude to be 0, and setting the weight to be A6; for the parameters of the pilot adding threshold (T _ ADD) and the pilot discarding threshold (T _ DROP), if the difference between the parameters and the setting values of other base stations is more than 5, the parameters are marked as 1, otherwise, the parameters are marked as 0, and the weights are A7 and A8 respectively. And multiplying the scores of the parameters by the weight, then adding the scores, and judging as the pseudo base station if the scores exceed the threshold value of the pseudo base station.
S103: the base station which is judged as the pseudo base station is matched with a directional antenna to analyze and display the downlink broadcast signals in real time, and gradually approaches to the base station according to the downlink signal intensity until the accurate position of the CDMA pseudo base station is determined;
for the base station judged as the pseudo base station, the signal intensity of a downlink pilot channel and a synchronous channel of the base station can be continuously monitored, the change situation of the signals is tracked, and the approximate direction of the base station signals can be judged and the approximate distance can be estimated according to the signal intensity when the antennas point differently by combining directional antennas with strong directivity. On the basis, a gradual approximation method can be adopted to position the pseudo base station until the specific position of the pseudo base station is determined. In positioning, after the approximate direction of the pseudo base station is preliminarily determined, spiral positioning or linear positioning around the target may be performed, which is not limited herein. For urban areas and other places with complex environments, spiral positioning can be adopted, and the specific operation method comprises the following steps: the method comprises the steps of carrying out spiral tour by using a vehicle-mounted mode and taking approximately determined directions and distances as circle centers, continuously monitoring signal changes and carrying out position estimation, relatively accurately determining the position range of a pseudo base station according to a plurality of base station estimated position points, and then searching in the position range to obtain the accurate position of the pseudo base station; for suburb and other occasions with less complex environment, linear trial positioning can be adopted, and the specific operation method comprises the following steps: gradually approaching towards the direction of the maximum signal strength according to the change of the signal, and carrying out proper fine adjustment by combining with an actual scene until the accurate position of the pseudo base station is finally determined.
S104: and storing the configuration parameters and the position information of the CDMA pseudo base station with the determined position to form a pseudo base station database, wherein the formed pseudo base station database is convenient for quick identification during terminal switching.
Specifically, the configuration parameters of the pseudo BASE station with determined position, including frequency point, PN _ OFFSET, system identification number (SID), network identification Number (NID), BASE station identification number (BASE _ ID), neighboring cell, etc., and position information (i.e., longitude and latitude) may be stored to form a pseudo BASE station database, which may be provided to an operator or law enforcement department as necessary to provide a basis for striking the CDMA pseudo BASE station.
Referring to fig. 2, the positioning device includes a downlink signal receiving module, a radio frequency processing module, a baseband processing module, a protocol processing module, and a control module.
As an embodiment of the present invention, the downlink signal receiving module is configured to receive a downlink signal of a base station, and send the received downlink signal of the base station to the radio frequency processing module, and preferably, the downlink signal receiving module may be implemented by using a directional antenna with good directivity.
As an embodiment of the present invention, the radio frequency processing module is configured to process the received downlink signal of the base station, and send the processed downlink signal of the base station to the baseband processing module, and specifically, the radio frequency processing module is configured to perform filtering amplification and down-conversion processing on the received downlink signal of the base station to obtain an analog intermediate frequency signal that can be processed by a baseband, and the analog intermediate frequency signal can be implemented by using a single frequency conversion scheme or a multiple frequency conversion scheme.
As an embodiment of the present invention, the baseband processing module is configured to process a signal sent from the radio frequency processing module, and specifically, perform a/D sampling, demodulation, despreading, descrambling, and other processing on the signal sent from the radio frequency processing module, and may be implemented by using an a/D module, a DSP, an FPGA, and an ARM, or may be implemented by using a dedicated CDMA mobile terminal module.
As an embodiment of the present invention, the protocol processing module is used to analyze and process a protocol of a signal in each downlink channel to obtain a base station configuration parameter carried by each downlink channel, and may be implemented by using embedded modules such as an MPC 8260.
As an embodiment of the present invention, the control module is used to control the radio frequency processing module, the baseband processing module and the protocol processing module, and may be implemented by a notebook computer, a mobile phone, a PAD, and the like.
As a preferred embodiment of the present invention, the positioning device includes a clock module, a satellite signal receiving module and a display module, wherein the clock module is used to provide clock signals for the radio frequency processing module and the baseband processing module, and can be implemented by using a dedicated GPS module; the satellite signal receiving module is used for receiving satellite signals and providing clock signals for the clock module, and can be realized by adopting a GPS antenna; the display module is used for displaying the analysis result.
Any process or method descriptions in flow charts or otherwise described herein may be understood as representing modules, segments, or portions of code which include one or more executable instructions for implementing specific logical functions or steps of the process, and alternate implementations are included within the scope of the preferred embodiment of the present invention in which functions may be executed out of order from that shown or discussed, including substantially concurrently or in reverse order, depending on the functionality involved, as would be understood by those reasonably skilled in the art of the present invention.
It will be understood by those skilled in the art that all or part of the steps carried by the method for implementing the above embodiments may be implemented by hardware related to instructions of a program, which may be stored in a computer readable storage medium, and when the program is executed, the program includes one or a combination of the steps of the method embodiments.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above examples are only for describing the preferred embodiments of the present invention, and are not intended to limit the scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.
Claims (7)
1. A method for positioning a CDMA pseudo base station, comprising the steps of:
s100: searching base station signals one by one according to the configured CDMA frequency points, and determining whether the base station signals exist;
s101: the method comprises the steps of performing despreading, demodulation and decoding on a downlink broadcast channel of a frequency point and a PN _ OFFSET determined to have a base station signal to obtain configuration parameters of the frequency point and the PN _ OFFSET;
s102: carrying out pseudo base station discrimination on the configuration parameters by using a pseudo base station identification algorithm according to the acquired configuration parameters;
s103: the base station which is judged as the pseudo base station is matched with a directional antenna to analyze and display the downlink broadcast signals in real time, and gradually approaches to the base station according to the downlink signal intensity until the accurate position of the CDMA pseudo base station is determined;
s104: and storing the configuration parameters and the position information of the CDMA pseudo base station with the determined position to form a pseudo base station database.
2. The method according to claim 1, wherein in S100, at each configured CDMA frequency point, the pilot searcher searches for all PN _ OFFSETs at the frequency point one by one using a local correlator to obtain an Ec/Io value of each PN _ OFFSET, and if the Ec/Io value of PN _ OFFSET satisfies a demodulatable threshold, it is considered that pilot acquisition on the PN _ OFFSET is successful, and synchronization channel acquisition is performed on the PN _ OFFSET where pilot acquisition is successful, and it is determined as a base station signal in normal synchronization.
3. The method of claim 2, wherein the synchronization channel acquisition is performed by outputting a 64 th Walsh code using a Walsh code generator, performing Walsh32 demodulation on PN _ OFFSET by a RAKE receiver, and reading the synchronization channel message.
4. The method of claim 3, wherein the synchronization channel message comprises a system identifier, a network identifier, PN _ OFFSET, a paging channel rate, and a carrier frequency.
5. The method of claim 1, wherein the configuration parameters are obtained by a method in which after obtaining the synchronization channel message, the RAKE receiver continues to search the paging channel while performing 64-order walsh code demodulation to monitor the paging channel to obtain the desired configuration parameters.
6. A CDMA pseudo base station positioning apparatus, comprising:
the downlink signal receiving module is used for receiving a downlink signal of a base station and sending the received downlink signal of the base station to the radio frequency processing module;
the radio frequency processing module is used for processing the received downlink signal of the base station and sending the processed downlink signal of the base station to the baseband processing module;
the baseband processing module is used for processing the signals sent by the radio frequency processing module;
the protocol processing module analyzes and processes the protocols of the signals in the downlink channels to obtain the base station configuration parameters borne by the downlink channels;
and the control module is used for controlling the radio frequency processing module, the baseband processing module and the protocol processing module.
7. The pseudo base station positioning device according to claim 6, further comprising:
the clock module is used for providing clock signals for the radio frequency processing module and the baseband processing module;
the satellite signal receiving module is used for receiving satellite signals and providing clock signals for the clock module;
and the display module is used for displaying the analysis result.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010344657.5A CN111586692A (en) | 2020-04-27 | 2020-04-27 | Method and device for positioning CDMA pseudo base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010344657.5A CN111586692A (en) | 2020-04-27 | 2020-04-27 | Method and device for positioning CDMA pseudo base station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111586692A true CN111586692A (en) | 2020-08-25 |
Family
ID=72125466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010344657.5A Withdrawn CN111586692A (en) | 2020-04-27 | 2020-04-27 | Method and device for positioning CDMA pseudo base station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111586692A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112738884A (en) * | 2020-12-23 | 2021-04-30 | 几维通信技术(深圳)有限公司 | System and method for positioning 5G terminal |
-
2020
- 2020-04-27 CN CN202010344657.5A patent/CN111586692A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112738884A (en) * | 2020-12-23 | 2021-04-30 | 几维通信技术(深圳)有限公司 | System and method for positioning 5G terminal |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7706841B2 (en) | Apparatus and method for transmitting wireless LAN information in mobile communication network for wireless LAN interworking | |
| US6957068B2 (en) | Subscriber station with dynamic multi-mode service acquisition capability | |
| US6490455B1 (en) | Apparatus and method for detecting a mobile phone in idle state | |
| EP1993311B1 (en) | Mobile communication terminal, communication system, communication method, and control program | |
| EP2853113B1 (en) | Method and apparatus for triggering handover between access points based on gathered history data of series of access points | |
| US7146164B2 (en) | Intelligent base station antenna beam-steering using mobile multipath feedback | |
| EP1995985B1 (en) | Method, measuring system, base station, network element and measuring device | |
| Parvez et al. | A theoretical model of GSM network based vehicle tracking system | |
| CN101390344A (en) | Method and apparatus for operating in a wireless local area network based on information from a wireless wide area network | |
| CN103781155B (en) | Mobile terminal and its method for searching network | |
| CN114342456B (en) | Measurement method, base station, multimode terminal, communication device, and storage medium | |
| WO2007010225A1 (en) | Method of compiling a list of identifiers associated with a mobile device user | |
| EP1448007A1 (en) | A device and method for forming a set of cells for time difference measurements, measuring time differences and locating a user of a mobile terminal | |
| US20090131078A1 (en) | Method and device for enhancing positioning of user equipment | |
| TWI489898B (en) | A method, a device and a system for obtaining location information | |
| CN101730122A (en) | User detection device suitable for CDMA2000 network and method | |
| CN111586692A (en) | Method and device for positioning CDMA pseudo base station | |
| CN110300373B (en) | Novel active/passive cooperative positioning method and system for mobile communication target | |
| CN114501560A (en) | Connection control method, mobile terminal, medium and product | |
| EP2499854A1 (en) | Identity acquisition of mobile stations in a mobile telecommunications network | |
| EP1810544B1 (en) | Method for positioning mobile station, mobile positioning system, base station and network element | |
| CN111294811A (en) | Cell capacity expansion method and network equipment | |
| CN117119541B (en) | Terminal network connection processing method, terminal and storage medium | |
| CN116889096A (en) | Wireless communication method, terminal equipment and network equipment | |
| EP2003466B1 (en) | Mobile phone localization method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200825 |
|
| WW01 | Invention patent application withdrawn after publication |