KR20170050977A - Apparatus and method for generating gps signal - Google Patents
Apparatus and method for generating gps signal Download PDFInfo
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- KR20170050977A KR20170050977A KR1020150153201A KR20150153201A KR20170050977A KR 20170050977 A KR20170050977 A KR 20170050977A KR 1020150153201 A KR1020150153201 A KR 1020150153201A KR 20150153201 A KR20150153201 A KR 20150153201A KR 20170050977 A KR20170050977 A KR 20170050977A
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- gps signal
- information
- time
- gps
- generating
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- G—PHYSICS
- G04—HOROLOGY
- G04R—RADIO-CONTROLLED TIME-PIECES
- G04R20/00—Setting the time according to the time information carried or implied by the radio signal
- G04R20/02—Setting the time according to the time information carried or implied by the radio signal the radio signal being sent by a satellite, e.g. GPS
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
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- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
- Synchronisation In Digital Transmission Systems (AREA)
Abstract
Description
The present invention relates to a method and apparatus for generating GPS signals. More particularly, the present invention relates to a method of generating a GPS signal supplied to an apparatus using a GPS signal as a time synchronization source.
The time synchronization between the communication devices can be performed through various time synchronization signals. For example, in a wired network, time synchronization between devices is performed using a time synchronization signal such as E1 / T1 / 2M as a synchronization signal suitable for frequency synchronization.
In the wireless network, time synchronization between devices connected to the wireless network is performed through a method using a Global Positioning System (GPS) signal and a Precision Time Protocol (PTP) / Network Time Protocol (NTP) method.
In a device that performs time synchronization through a GPS signal, time synchronization is performed in such a manner that a GPS signal is received via an external GPS antenna and used as a synchronization source signal. However, a device for performing time synchronization through a GPS signal has recently been changing the synchronization source for time synchronization with the IEEE 1588 PTP, which is a synchronization using a packet network, due to the difficulty and cost of installation of a GPS antenna.
However, in the case of the PTP scheme, there are many differences in performance depending on the characteristics of the network, so that it is very difficult to maintain the required phase and frequency errors between the devices for time synchronization through the PTP scheme. Therefore, many problems may occur in the process of replacing the time synchronization method with the PTP method in a device that performs time synchronization through the existing GPS.
According to various embodiments of the present invention, a method of generating a GPS signal comprises: receiving from a device that has received at least one GPS signal, a packet including time information and information associated with the at least one GPS signal; An operation of extracting time information included in a packet, an operation of generating information on a reference time of the GPS signal using the time information, and an operation of generating the GPS signal ≪ / RTI >
According to various embodiments of the present invention, an apparatus for generating a GPS signal comprises: a communication module for receiving, from a device that has received at least one GPS signal, packets containing time information and information associated with the at least one GPS signal; Generates time information included in the packet, generates information on a reference time of the GPS signal using the time information, and generates the GPS signal based on information related to the GPS signal and information on the reference time And a control unit for generating the control signal.
According to various embodiments of the present invention, there is provided a non-transitory computer readable recording medium having recorded thereon a program for execution on a computer, said program comprising instructions, when executed by a processor, An operation of extracting time information included in a packet including the received time information, an operation of generating information on a reference time of the GPS signal using the time information, and an operation of receiving And generating executable instructions for generating the GPS signal based on information associated with a GPS signal and information about the reference time.
The GPS signal generating apparatus according to various embodiments of the present invention can generate a GPS signal based on the synchronized time using the PTP. Further, the GPS signal generating device can supply the generated GPS signal to the device that performs time synchronization through the GPS signal. Accordingly, the apparatus for performing the time synchronization through the GPS signal can perform the time synchronization through the GPS signal without installing the GPS antenna for receiving the GPS signal. Therefore, the difficulty of the GPS antenna installation and the cost problem can be solved.
Also, by using the GPS signal synchronized with the PTP scheme, there is an effect that the phase and frequency error between apparatuses performing time synchronization are minimized.
1 illustrates a network environment including a GPS signal generation device according to various embodiments of the present invention.
2 is a block diagram illustrating a structure of an apparatus for generating GPS signals according to various embodiments of the present invention.
3 is a flowchart of a method of generating a GPS signal by a GPS signal generating apparatus according to various embodiments of the present invention.
4 is a flowchart of a method of generating a GPS signal using time information extracted by a GPS signal generating apparatus according to various embodiments of the present invention.
5 is a flowchart of a method for determining the time of receipt of each GPS signal by the GPS signal generation apparatus according to various embodiments of the present invention.
6A illustrates the relationship between satellites and an apparatus for receiving GPS signals from satellites according to various embodiments of the present invention.
FIG. 6B illustrates time information for a plurality of GPS signals generated by the GPS signal generation apparatus according to various embodiments of the present invention.
7 is a block diagram illustrating a structure of a GPS signal receiving apparatus for transmitting a packet including a GPS signal and time information to a GPS signal generating apparatus according to various embodiments of the present invention.
8 is a flowchart of a method of transmitting a packet including a GPS signal and time information to a GPS signal generating apparatus according to various embodiments of the present invention.
Hereinafter, various embodiments of the present document will be described with reference to the accompanying drawings. It should be understood, however, that this invention is not intended to be limited to the particular embodiments described herein but includes various modifications, equivalents, and / or alternatives of the embodiments of this document . In connection with the description of the drawings, like reference numerals may be used for similar components.
In this document, the expressions "having," " having, "" comprising," or &Quot;, and does not exclude the presence of additional features.
In this document, the expressions "A or B," "at least one of A or / and B," or "one or more of A and / or B," etc. may include all possible combinations of the listed items . For example, "A or B," "at least one of A and B," or "at least one of A or B" includes (1) at least one A, (2) Or (3) at least one A and at least one B all together.
As used herein, the terms "first," "second," "first," or "second," and the like may denote various components, regardless of their order and / or importance, But is used to distinguish it from other components and does not limit the components. For example, the first user equipment and the second user equipment may represent different user equipment, regardless of order or importance. For example, without departing from the scope of the rights described in this document, the first component can be named as the second component, and similarly the second component can also be named as the first component.
(Or functionally or communicatively) coupled with / to "another component (eg, a second component), or a component (eg, a second component) Quot; connected to ", it is to be understood that any such element may be directly connected to the other element or may be connected through another element (e.g., a third element). On the other hand, when it is mentioned that a component (e.g., a first component) is "directly connected" or "directly connected" to another component (e.g., a second component) It can be understood that there is no other component (e.g., a third component) between other components.
As used herein, the phrase " configured to " (or set) to be "configured according to circumstances may include, for example, having the capacity to, To be designed to, "" adapted to, "" made to, "or" capable of ". The term " configured to (or set up) "may not necessarily mean" specifically designed to "in hardware. Instead, in some situations, the expression "configured to" may mean that the device can "do " with other devices or components. For example, a processor configured (or configured) to perform the phrases "A, B, and C" may be implemented by executing one or more software programs stored in a memory device or a dedicated processor (e.g., an embedded processor) , And a generic-purpose processor (e.g., a CPU or an application processor) capable of performing the corresponding operations.
The terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of the other embodiments. The singular expressions may include plural expressions unless the context clearly dictates otherwise. Terms used herein, including technical or scientific terms, may have the same meaning as commonly understood by one of ordinary skill in the art. The general predefined terms used in this document may be interpreted in the same or similar sense as the contextual meanings of the related art and, unless expressly defined in this document, include ideally or excessively formal meanings . In some cases, even the terms defined in this document can not be construed as excluding the embodiments of this document.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An electronic apparatus according to various embodiments will now be described with reference to the accompanying drawings. In this document, the term user may refer to a person using an electronic device or a device using an electronic device (e.g., an artificial intelligence electronic device).
1 illustrates a network environment including a GPS signal generation device according to various embodiments of the present invention.
According to various embodiments of the present invention, GPS
According to various embodiments of the present invention, the
The information related to the GPS signal may include GPS data included in the received GPS signal, orbit information of the satellite transmitting the GPS, and position information of the
Further, the
For example, the packet including the time information may include at least one of an announce packet, a sync packet, a follow_up packet delay_request (Delay_Request), and a delay_Response packet . ≪ / RTI >
According to various embodiments of the present invention, the GPS
The GPS
According to various embodiments of the present invention, the wireless base station apparatus 130 using the GPS signal as a time synchronization source can perform time synchronization using the received GPS signal. Since the wireless base station device 130 performs time synchronization using the GPS signal received from the GPS
Accordingly, the wireless base station device 130 can solve the difficulty and the cost problem of installing the antenna for receiving the GPS signal. Since the GPS signal is generated by using the packet including the time information, it is possible to use a device that transmits / receives a signal or information (e.g.,
2 is a block diagram illustrating a structure of an apparatus for generating GPS signals according to various embodiments of the present invention.
According to various embodiments of the present invention, the GPS
According to various embodiments of the present invention, the
As described in FIG. 1, the GPS signal receiving apparatus can receive GPS signals from each of at least one satellite and generate information associated with each of the received at least one GPS signal.
Information related to the GPS signal may include GPS data included in the received GPS signal, orbit information of the satellite that transmitted the GPS, and location information of the
Further, the GPS signal receiving apparatus can generate a packet including time information based on a preset protocol. The
According to various embodiments of the present invention, the reference
Also, the reference
For this purpose, the reference
The reference time
For example, the reference time information may include 1 PPS (Pulse Per Second) and TOD (Time Of Day) information. In this way, the reference time information may be information indicating the time of the clock of the GPS
The GPS signal may be generated based on the set reference time information. In this way, although the device for performing synchronization through the generated GPS signal has a time delay, it is possible to obtain the time difference between the GPS signal receiving device and the GPS
According to various embodiments of the present invention, the GPS signal
The GPS signal
For example, the GPS signal
Also, the GPS signal
In general, at least one satellite simultaneously transmits GPS signals in a predetermined period. Accordingly, the GPS signal
According to various embodiments of the present invention, the GPS
The GPS
In one embodiment, the information associated with the GPS signal may include information about the time the GPS signal was stored in the GPS signal receiving device. In this case, the GPS
In this manner, the
According to various embodiments of the present invention, the
3 is a flowchart of a method of generating a GPS signal by a GPS signal generating apparatus according to various embodiments of the present invention.
In
In
In
For this purpose, the reference
For example, the reference time information may include 1 PPS (Pulse Per Second) and TOD (Time Of Day) information. In this way, the reference time information may be information indicating the time of the clock of the GPS
In
The GPS
4 is a flowchart of a method of generating a GPS signal using time information extracted by a GPS signal generating apparatus according to various embodiments of the present invention.
In
The reference time of the GPS signal may be the time when the actual satellites transmit the GPS signal. In addition, the reference time may be a time synchronized with the time of the GPS signal receiving apparatus. In other words, the reference time may be the time when the actual satellites transmitted the GPS signal based on the time of the GPS signal receiving apparatus.
In
In
In this way, the GPS
5 is a flowchart of a method for determining the time of receipt of each GPS signal by the GPS signal generation apparatus according to various embodiments of the present invention.
In
In
In general, at least one satellite simultaneously transmits GPS signals in a predetermined period. Thus, the GPS
6A illustrates the relationship between satellites and an apparatus for receiving GPS signals from satellites according to various embodiments of the present invention.
As shown in FIG. 6A, the GPS
The distance between the
In general, the
The GPS
FIG. 6B illustrates time information for a plurality of GPS signals generated by the GPS signal generation apparatus according to various embodiments of the present invention.
According to various embodiments of the present invention, the GPS
6A, even when the GPS signals are transmitted at the same time by a plurality of satellites according to the distance between the plurality of satellites and the GPS
Therefore, the GPS
The GPS
For example, the GPS
7 is a block diagram illustrating a structure of a GPS signal receiving apparatus for transmitting a packet including a GPS signal and time information to a GPS signal generating apparatus according to various embodiments of the present invention.
According to various embodiments of the present invention, the GPS
The
The GPS
The
The
8 is a flowchart of a method of transmitting a packet including a GPS signal and time information to a GPS signal generating apparatus according to various embodiments of the present invention.
In
In
In
In
Each of the components described in this document may be composed of one or more components, and the name of the component may be changed according to the type of the device. In various embodiments, an apparatus may comprise at least one of the elements described herein, and some elements may be omitted or further include additional elements. In addition, some of the components of the apparatus according to various embodiments may be combined to constitute one entity, so that the functions of the corresponding components before being combined can be performed in the same manner.
As used in this document, the term "module" may refer to a unit comprising, for example, one or a combination of two or more of hardware, software or firmware. A "module" may be interchangeably used with terms such as, for example, unit, logic, logical block, component, or circuit. A "module" may be a minimum unit or a portion of an integrally constructed component. A "module" may be a minimum unit or a portion thereof that performs one or more functions. "Modules" may be implemented either mechanically or electronically. For example, a "module" may be an application-specific integrated circuit (ASIC) chip, field-programmable gate arrays (FPGAs) or programmable-logic devices And may include at least one.
At least a portion of a device (e.g., modules or functions thereof) or a method (e.g., operations) according to various embodiments may include, for example, computer-readable storage media in the form of program modules, As shown in FIG. When the instruction is executed by a processor (e.g., controller 220), the one or more processors may perform a function corresponding to the instruction. The computer-readable storage medium may be, for example, a
The computer readable recording medium may be a hard disk, a floppy disk, a magnetic media (e.g., a magnetic tape), an optical media (e.g., a compact disc read only memory (CD-ROM) digital versatile discs, magneto-optical media such as floptical disks, hardware devices such as read only memory (ROM), random access memory (RAM) Etc. The program instructions may also include machine language code such as those produced by a compiler, as well as high-level language code that may be executed by a computer using an interpreter, etc. The above- May be configured to operate as one or more software modules to perform the operations of the embodiment, and vice versa.
Modules or program modules according to various embodiments may include at least one or more of the elements described above, some of which may be omitted, or may further include additional other elements. Operations performed by modules, program modules, or other components in accordance with various embodiments may be performed in a sequential, parallel, iterative, or heuristic manner. Also, some operations may be performed in a different order, omitted, or other operations may be added.
According to various embodiments, there is provided a storage medium storing instructions which, when executed by at least one processor, cause the at least one processor to be configured to perform at least one operation, An operation of receiving, from a device that has received at least one GPS signal, a packet including time information and information related to the at least one GPS signal; extracting time information included in the packet; Generating information on a reference time of the GPS signal; And generating the GPS signal based on information related to the GPS signal and information on the reference time.
And the embodiments disclosed in this document are presented for the purpose of explanation and understanding of the disclosed technology and do not limit the scope of the technology described in this document. Accordingly, the scope of this document should be interpreted to include all modifications based on the technical idea of this document or various other embodiments.
Claims (17)
Receiving, from a device that has received at least one GPS signal, packets containing time information and information associated with the at least one GPS signal;
Extracting time information included in the packet;
Generating information on a reference time of the GPS signal using the time information; And
Generating the GPS signal based on information related to the GPS signal and information on the reference time;
/ RTI >
Wherein the information associated with the at least one GPS signal comprises:
GPS data included in each of the at least one GPS signal, orbit information of each of the satellites transmitting the at least one GPS signal, and location information of the device receiving the at least one GPS signal
/ RTI >
The operation of generating the GPS signal includes:
Setting a reference time of the GPS signal using information on the reference time;
Determining a time at which each of the at least one GPS signal is received based on the set reference time using information associated with the GPS signal; And
Generating the GPS signal using the determined reception time of each of the GPS signals and GPS data contained in each of the at least one GPS signals
/ RTI >
Wherein the determining of the time of receipt of each of the at least one GPS signal comprises:
Using the at least one GPS signal and the at least one GPS signal, using the orbit information of each of the satellites transmitting the at least one GPS signal and the location information of the device receiving the at least one GPS signal, An operation of calculating a distance between the apparatuses receiving the data; And
Determining the time at which each of the at least one GPS signal was received based on the calculated distance
/ RTI >
Performing time synchronization with the time of the device that has received the at least one GPS signal using the extracted time information
And generating a GPS signal.
The operation of generating information on the reference time of the GPS signal includes:
And generates information about the reference time so as to correspond to the time and the device receiving the at least one GPS signal synchronized in time.
The information on the reference time is,
A TOD (time of day) information, and a pulse per second (PPS).
An operation of transmitting the generated GPS signal to an apparatus for performing time synchronization through a GPS signal
And generating a GPS signal.
A communication module for receiving, from a device that has received at least one GPS signal, a packet including time information and information associated with the at least one GPS signal; And
Generates time information included in the packet, generates information on a reference time of the GPS signal using the time information, and generates the GPS signal based on information related to the GPS signal and information on the reference time The control unit
And a GPS signal generator.
Wherein the information associated with the at least one GPS signal comprises:
GPS data included in each of the at least one GPS signal, orbit information of each of the satellites transmitting the at least one GPS signal, and location information of the device receiving the at least one GPS signal
And a GPS signal generator.
Wherein,
Sets the reference time of the GPS signal using the information on the reference time and determines the time when each of the at least one GPS signal is received based on the set reference time using information related to the GPS signal , The reception time of each of the determined at least one GPS signal and the GPS data contained in each of the at least one GPS signal.
Wherein,
Using the at least one GPS signal and the at least one GPS signal, using the orbit information of each of the satellites transmitting the at least one GPS signal and the location information of the device receiving the at least one GPS signal, And determines a time at which each of the at least one GPS signal is received based on the calculated distance.
Wherein,
And performs time synchronization with the time of the device that has received the at least one GPS signal using the extracted time information.
Wherein,
And generates information on the reference time so as to correspond to the time and the device receiving the at least one GPS signal synchronized in time.
The information on the reference time is,
A TOD (time of day) information, and a pulse per second (PPS).
Wherein,
And controls the communication module such that the generated GPS signal is transmitted to a device performing time synchronization through a GPS signal.
The program, when executed by a processor,
Extracting time information included in a packet including time information received from a device that has received at least one GPS signal;
Generating information on a reference time of the GPS signal using the time information; And
Generating the GPS signal based on information relating to the GPS signal received from the device that has received the at least one GPS signal and information about the reference time;
Executable instructions for causing a computer to perform the steps of:
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| KR1020150153201A KR20170050977A (en) | 2015-11-02 | 2015-11-02 | Apparatus and method for generating gps signal |
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| KR1020150153201A KR20170050977A (en) | 2015-11-02 | 2015-11-02 | Apparatus and method for generating gps signal |
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