CN110545123B - Dual receiving base station for single frequency point data transmission in narrow band transmission - Google Patents
Dual receiving base station for single frequency point data transmission in narrow band transmission Download PDFInfo
- Publication number
- CN110545123B CN110545123B CN201910817475.2A CN201910817475A CN110545123B CN 110545123 B CN110545123 B CN 110545123B CN 201910817475 A CN201910817475 A CN 201910817475A CN 110545123 B CN110545123 B CN 110545123B
- Authority
- CN
- China
- Prior art keywords
- receiving
- board
- radio frequency
- signals
- frequency signal
- 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.)
- Active
Links
Images
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/50—Circuits using different frequencies for the two directions of communication
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/06—Selective distribution of broadcast services, e.g. multimedia broadcast multicast service [MBMS]; Services to user groups; One-way selective calling services
- H04W4/10—Push-to-Talk [PTT] or Push-On-Call services
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Multimedia (AREA)
- Transceivers (AREA)
Abstract
The invention provides a double-receiving base station for single frequency point data transmission in narrow-band transmission, which comprises a radio frequency board for transmitting and receiving and transmitting signals and a baseband board for processing the receiving signals and the transmitting signals, wherein the baseband board comprises a DSP (digital signal processor) and an FPGA (field programmable gate array); the radio frequency board comprises an excitation board, a local vibration board, a receiving board and a receiving and transmitting switch, wherein the receiving board is used for receiving signals and processing the received radio frequency signals; the local vibration plate is used for providing local vibration signals for the excitation plate and the receiving plate and is used for up-conversion and down-conversion of radio frequency signals; the excitation plate is used for processing and transmitting radio frequency signals; the receiving and transmitting switch is used for switching transmitting and receiving signal transmission paths so as to realize receiving and transmitting time division multiplexing of a single port; the receiving plate comprises a first receiving channel for receiving a first radio frequency signal and a second receiving channel for receiving a second radio frequency signal; the double-receiving base station for single frequency point data transmission in narrow-band transmission can receive and forward radio frequency signals of two frequencies, and resources are fully utilized.
Description
Technical Field
The invention relates to the field of mobile communication, in particular to a double-receiving base station for single frequency point data transmission in narrow-band transmission.
Background
In public security emergency communication, a mode of largely building a fixed communication base station to ensure wide-range communication coverage is indispensable, but as the times develop, the requirement of a public security system for wireless communication is continuously increased, and the requirement of the current emergency communication is difficult to meet only by the mode. At present, the urbanization process of China is accelerated, a skyscraper is pulled out, and the shielding of buildings is serious; since rail transit is becoming the mainstream traffic, tunnels and underground layers are also required to be covered by communication. Addressing of the erection site is difficult, requiring room conditions in the machine room, and ensuring stable energy consumption provision. The cost for building the communication base station is high, the construction period is long, and if the communication base station is used for supplementing blind areas, the communication base station is obviously not an optimal solution.
Currently, the coverage distance of existing communication networks is increased mainly by adding small base stations. However, most of the existing wireless scheduling communication networks adopt a one-to-one fixed frequency point setting mode of channels and frequency points, so that a fixed frequency point needs to be set for each channel of a base station, that is, each channel of the existing small base station can only receive a single-frequency radio frequency signal and can only transmit the single-frequency radio frequency signal; for example, after the small base station sets the fixed frequency point, when the first intercom transmits through the existing network at the frequency of F1, the small base station converts the received F1 signal into a signal with the frequency of F2 and transmits the signal to the second intercom, but since the fixed frequency point is already set in the channel of the small base station, the channel of the small base station cannot receive and transmit the signals of other frequency points. Therefore, the channel of the existing base station can only receive a single fixed frequency point, which causes resource waste, and with the increase of the capacity of the existing wireless scheduling communication network, more base stations are required to be added to ensure communication, so that the cost is higher.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a double-receiving base station for single frequency point data transmission in narrow-band transmission, so as to solve the problems in the prior art.
The technical scheme of the invention is realized as follows:
a double-receiving base station for single frequency point data transmission in narrow-band transmission comprises a radio frequency board for receiving signals and transmitting signals and a baseband board for processing the received signals and the transmitted signals, wherein the baseband board comprises a DSP processor and an FPGA; the radio frequency board comprises an excitation board, a local vibration board, a receiving board and a receiving and transmitting switch, wherein the local vibration board is used for providing local vibration signals for the excitation board and the receiving board and providing up-conversion local vibration signals and down-conversion local vibration signals for the radio frequency signals; the receiving board is used for receiving signals, mixing the received radio frequency signals with down-conversion local oscillation signals output by the local oscillation board, and then performing down-conversion processing; the excitation plate is used for carrying out up-conversion processing on the radio frequency signal, and then carrying out frequency mixing on the radio frequency signal and an up-conversion local oscillation signal output by the local oscillation plate to reach a transmission frequency for transmission; the receiving and transmitting switch is used for switching transmitting and receiving signal transmission paths so as to realize receiving and transmitting time division multiplexing of a single port;
the receiving plate comprises a first receiving channel for receiving a first radio frequency signal and a second receiving channel for receiving a second radio frequency signal; after the receiving board receives the first radio frequency signal and the second radio frequency signal, the DSP processor judges the sequence of the first radio frequency signal and the second radio frequency signal during receiving, and then the first radio frequency signal or the second radio frequency signal received firstly is transmitted out through the excitation board.
Furthermore, the excitation board comprises a first up-conversion module, a filtering module, a frequency mixing module and a second up-conversion module, after the radio-frequency signal is up-converted to 45M intermediate frequency through the first up-conversion module, the band is limited through the filtering module, the frequency mixing module mixes the band-limited intermediate frequency signal with an up-conversion local oscillation signal output by the vibration board, and finally the mixed radio-frequency signal is amplified, filtered and power-amplified and then output.
Furthermore, the receiving board filters and amplifies the received radio frequency signal, then performs frequency mixing with a down-conversion local oscillation signal output by the local oscillation board to down-convert the radio frequency signal to a 45M intermediate frequency signal, then passes the down-converted intermediate frequency signal through a narrow-band intermediate frequency filter and a secondary amplification, and finally completes the processing from digital down-conversion to a digital baseband signal through the baseband board.
Further, the transceiver switch combines the receiving interface of the receiving board and the transmitting interface of the excitation board into one port.
Further, the vibration source in the vibrating plate is a ceramic dielectric resonator.
Further, the DSP processor is a TMS320C6410 chip.
Further, the FPGA is an EP3C25 chip.
Compared with the prior art, the invention has the following advantages: the receiving board comprises a first receiving channel for receiving a first radio frequency signal and a second receiving channel for receiving a second radio frequency signal, so that the receiving board can receive two paths of radio frequency signals, such as the first radio frequency signal and the second radio frequency signal, then the DSP processor judges the sequence of the first radio frequency signal and the second radio frequency signal during receiving, and then the first radio frequency signal or the second radio frequency signal received firstly is transmitted out through the excitation board, and the base station is fully utilized.
For example, the transmitting and receiving signal transmission paths are switched through the transceiving switch, so that the dual-receiving base station for single frequency point data transmission in narrowband transmission can receive a radio frequency signal (first radio frequency signal) with the frequency of F1 through the first receiving channel, convert the radio frequency signal of F1 into a radio frequency signal with the frequency of F2, and send the radio frequency signal to the interphone; the radio frequency signal with the frequency of F2 (a second radio frequency signal) can also be received through the second receiving channel, and the radio frequency signal with the frequency of F2 is converted into the radio frequency signal with the frequency of F1 to be sent to the interphone, so that the base station is fully utilized.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a system diagram of a dual receiving base station for single frequency point data transmission in narrowband transmission according to the present invention;
fig. 2 is a schematic diagram of the principle structure of the dual receiving base station for single frequency point data transmission in narrowband transmission according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, the embodiment of the present invention discloses a dual-receiving base station for single frequency point data transmission in narrowband transmission, which includes a radio frequency board for receiving signals and transmitting signals and a baseband board for processing the received signals and the transmitting signals, where the baseband board includes a DSP processor and an FPGA; the radio frequency board comprises an excitation board, a local vibration board, a receiving board and a receiving and transmitting switch, wherein the local vibration board is used for providing local vibration signals for the excitation board and the receiving board and providing up-conversion local vibration signals and down-conversion local vibration signals for the radio frequency signals; the receiving board is used for receiving signals, mixing the received radio frequency signals with down-conversion local oscillation signals output by the local oscillation board, and then performing down-conversion processing; the excitation plate is used for carrying out up-conversion processing on the radio frequency signal, and then carrying out frequency mixing on the radio frequency signal and an up-conversion local oscillation signal output by the local oscillation plate to reach a transmission frequency for transmission; the receiving and transmitting switch is used for switching transmitting and receiving signal transmission paths so as to realize receiving and transmitting time division multiplexing of a single port;
the receiving plate comprises a first receiving channel for receiving a first radio frequency signal and a second receiving channel for receiving a second radio frequency signal; after the receiving board receives the first radio frequency signal and the second radio frequency signal, the DSP processor judges the sequence of the first radio frequency signal and the second radio frequency signal during receiving, and then the first radio frequency signal or the second radio frequency signal received firstly is transmitted out through the excitation board.
As shown in fig. 2, when the first intercom initiates a call, the original network uses the frequency F1, i.e. the first radio frequency signal, and after receiving the radio frequency signal with the frequency F1, the dual receiving base station of this embodiment can convert the radio frequency signal into a radio frequency signal with the frequency F2 and send the radio frequency signal to the second intercom for communication; when the second intercom initiates a call, the second intercom sends out a radio frequency signal with the frequency of F2, that is, the second radio frequency signal, and after receiving the radio frequency signal with the frequency of F2, the dual receiving base station of the embodiment can convert the radio frequency signal into a radio frequency signal with the frequency of F1, and send the radio frequency signal to the first intercom through the original network for communication. Therefore, the double-receiving base station for single frequency point data transmission in narrow-band transmission can receive two paths of radio frequency signals with different frequencies and transmit the radio frequency signals to complete communication, and the base station is fully utilized.
Specifically, in this embodiment, before the dual receiving base station for single frequency point data transmission in narrowband transmission is used, it is necessary to set receiving frequencies for the first receiving channel and the second receiving channel, for example, the first receiving channel can only receive a radio frequency signal with a frequency of F1 (i.e., a first radio frequency signal), and the second receiving channel can only receive a radio frequency signal with a frequency of F2 (i.e., a second radio frequency signal), for example, when the first radio frequency signal first reaches the dual receiving base station in this embodiment, the first radio frequency signal is received through the first receiving channel, and is transmitted to the terminal through the excitation board after being processed by the baseband board; when the second radio frequency signal reaches the double-receiving base station of the embodiment, the second radio frequency signal is received through the second receiving channel, processed through the baseband board and then transmitted to the terminal through the excitation board; and if the second receiving channel has received the second radio frequency signal before the first radio frequency signal is not transmitted out through the excitation plate, the DSP processor can judge the sequence of the first radio frequency signal and the second radio frequency signal during receiving, and only transmits the first radio frequency signal which arrives firstly to the terminal through the excitation plate. The invention makes full use of the base station and avoids excessively increasing the base station.
Specifically, in the embodiment of the present invention, the excitation plate includes a first up-conversion module, a filtering module, a frequency mixing module and a second up-conversion module, the first up-conversion module up-converts the radio frequency signal to 45M intermediate frequency, and then the filtering module performs band limiting, the frequency mixing module mixes the band-limited intermediate frequency signal with the up-conversion local oscillation signal output by the local oscillation plate, and finally amplifies, filters and power-amplifies the mixed radio frequency signal and outputs the signal.
The receiving board filters and amplifies the received radio frequency signal, then carries out frequency mixing with a down-conversion local oscillation signal output by the local oscillation board to carry out down-conversion to a 45M intermediate frequency signal, then passes the down-converted intermediate frequency signal through a narrow-band intermediate frequency filter and secondary amplification, and finally completes the processing from digital down-conversion to a digital baseband signal through the baseband board. That is, after the receiving board receives the first radio frequency signal or the second radio frequency signal, a series of processing of filtering, amplifying and down-conversion is performed, and then digital down-conversion to the digital baseband signal is completed through the baseband board.
Furthermore, the receiving interface of the receiving board and the transmitting interface of the excitation board are combined into a port by the transceiving switch, and the receiving and transmitting of the radio frequency signal are completed through the same interface of the transceiving switch, so that the transceiving time division multiplexing of a single interface is realized. Furthermore, the vibration source in the vibration plate is a ceramic dielectric resonator, so as to ensure that the application requirements of the base station are met.
Further, the DSP processor is a TMS320C6410 chip, which is used as a processing core of the dual receiving base station in this embodiment, and the DSP mainly completes modulation and demodulation of baseband signals, coding and decoding processing of voice signals, air interface signal routing control, and an external communication protocol interface.
Furthermore, the FPGA is an EP3C25 chip, and is configured to complete hardware interface driving, clock frequency calibration, time slot signal synchronization, transmit shaping filtering, and receive filtering. The FPGA is used as a semi-custom circuit in the field of Application Specific Integrated Circuits (ASIC), which not only solves the defects of the custom circuit, but also overcomes the defect that the gate circuit number of the original programmable device is limited.
The receiving board comprises a first receiving channel for receiving a first radio frequency signal and a second receiving channel for receiving a second radio frequency signal, two paths of radio frequency signals, such as the first radio frequency signal and the second radio frequency signal, are received simultaneously through the receiving board, then the sequence of the first radio frequency signal and the second radio frequency signal during receiving is judged through the DSP processor, and then the first radio frequency signal or the second radio frequency signal received firstly is transmitted out through the excitation board, so that the base station is fully utilized.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (7)
1. A double-receiving base station for single frequency point data transmission in narrow-band transmission is characterized by comprising a radio frequency board for receiving signals and transmitting signals and a baseband board for processing the received signals and the transmitting signals, wherein the baseband board comprises a DSP (digital signal processor) and an FPGA (field programmable gate array); the radio frequency board comprises an excitation board, a local vibration board, a receiving board and a receiving and transmitting switch, wherein the local vibration board is used for providing local vibration signals for the excitation board and the receiving board and providing up-conversion local vibration signals and down-conversion local vibration signals for the radio frequency signals; the receiving board is used for receiving signals, mixing the received radio frequency signals with down-conversion local oscillation signals output by the local oscillation board, and then performing down-conversion processing; the excitation plate is used for carrying out up-conversion processing on the radio frequency signal, and then carrying out frequency mixing on the radio frequency signal and an up-conversion local oscillation signal output by the local oscillation plate to reach a transmission frequency for transmission; the receiving and transmitting switch is used for switching transmitting and receiving signal transmission paths so as to realize receiving and transmitting time division multiplexing of a single port;
the receiving plate comprises a first receiving channel for receiving a first radio frequency signal and a second receiving channel for receiving a second radio frequency signal; after the receiving board receives the first radio frequency signal and the second radio frequency signal, the DSP processor judges the sequence of the first radio frequency signal and the second radio frequency signal during receiving, and then the first radio frequency signal or the second radio frequency signal received firstly is transmitted out through the excitation board.
2. The dual-receiving base station as claimed in claim 1, wherein the excitation board comprises a first up-conversion module, a filtering module, a mixing module and a second up-conversion module, the first up-conversion module up-converts the rf signal to 45M if, and then the filtering module limits the band, the mixing module mixes the limited if signal with the up-conversion lo signal output by the local oscillating board, and finally amplifies, filters and power-amplifies the mixed rf signal for output.
3. The dual-receiving base station as claimed in claim 1, wherein the receiving board filters and amplifies the received rf signals, mixes the filtered and amplified rf signals with the down-converted lo signals output by the local oscillator board, down-converts the down-converted lo signals to 45M if signals, then passes the down-converted if signals through the narrow-band if filter and the second stage of amplification, and finally completes the processing of digital down-conversion to digital baseband signals through the baseband board.
4. The dual receive base station for single frequency point data transmission in narrowband transmissions of claim 1, wherein the transmit-receive switch combines the receive interface of the receive board and the transmit interface of the launch board into one port.
5. The dual receive base station for single frequency point data transmission in narrowband transmissions of claim 1, where the source in the local vibrating plate is a ceramic dielectric resonator.
6. The dual receive base station for a single point-in-frequency data transmission in a narrowband transmission of claim 1, where the DSP processor is a TMS320C6410 chip.
7. The dual receive base station for single frequency point data transmission in a narrowband transmission of claim 1, where the FPGA is an EP3C25 chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910817475.2A CN110545123B (en) | 2019-08-30 | 2019-08-30 | Dual receiving base station for single frequency point data transmission in narrow band transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910817475.2A CN110545123B (en) | 2019-08-30 | 2019-08-30 | Dual receiving base station for single frequency point data transmission in narrow band transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110545123A CN110545123A (en) | 2019-12-06 |
| CN110545123B true CN110545123B (en) | 2022-02-01 |
Family
ID=68712412
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910817475.2A Active CN110545123B (en) | 2019-08-30 | 2019-08-30 | Dual receiving base station for single frequency point data transmission in narrow band transmission |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110545123B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075209A (en) * | 2009-11-23 | 2011-05-25 | 上海无线通信研究中心 | Asymmetric frequency division duplex transceiving system and transceiving method |
| EP2536051A1 (en) * | 2007-06-19 | 2012-12-19 | Ntt Docomo, Inc. | Base station device, system, and synchronization channel transmission method |
| CN103117768A (en) * | 2013-01-25 | 2013-05-22 | 中国科学院微电子研究所 | Wireless transceiver |
| CN103858516A (en) * | 2013-12-13 | 2014-06-11 | 华为技术有限公司 | Multi-frequency transceiver and base station |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015154223A1 (en) * | 2014-04-08 | 2015-10-15 | 华为技术有限公司 | Communication control method and related apparatus |
| CN107708217B (en) * | 2017-11-28 | 2020-02-04 | 中国联合网络通信集团有限公司 | Resource scheduling method and base station |
-
2019
- 2019-08-30 CN CN201910817475.2A patent/CN110545123B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2536051A1 (en) * | 2007-06-19 | 2012-12-19 | Ntt Docomo, Inc. | Base station device, system, and synchronization channel transmission method |
| CN102075209A (en) * | 2009-11-23 | 2011-05-25 | 上海无线通信研究中心 | Asymmetric frequency division duplex transceiving system and transceiving method |
| CN103117768A (en) * | 2013-01-25 | 2013-05-22 | 中国科学院微电子研究所 | Wireless transceiver |
| CN103858516A (en) * | 2013-12-13 | 2014-06-11 | 华为技术有限公司 | Multi-frequency transceiver and base station |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110545123A (en) | 2019-12-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102647222A (en) | Method and apparatus for management of multi-carrier communications in a wireless communication system | |
| CN105471490B (en) | Repeater and signal processing method thereof | |
| CN113225846A (en) | Communication method and device | |
| US8396418B2 (en) | Microwave relay receiving method and apparatus, microwave relay transmitting method and apparatus, and microwave relay node | |
| KR20140131761A (en) | Structure mobile terminal operating in cellular communication system providing device-to-device communication and operation method thereof | |
| CN109698717B (en) | Networking method for common-frequency and simulcasting of relay station and relay station | |
| CN102752010B (en) | A kind of transceiver module for the base station that communicates | |
| JPH04234233A (en) | Communication method, communication apparatus, transmitting/receiving site appararus and moving wireless transmitting/ receiving site apparatus | |
| US9729263B2 (en) | Radio transceiver | |
| CN209844960U (en) | Low-power-consumption repeater based on multi-local-vibration radio frequency agility transceiver | |
| CN110545123B (en) | Dual receiving base station for single frequency point data transmission in narrow band transmission | |
| CN104682994A (en) | Radio frequency chip and system for wireless local area network and broadcast integrated transmission | |
| US20110134772A1 (en) | Methods of radio communication involving multiple radio channels, and radio signal repeater and mobile station apparatuses implementing same | |
| CN216356719U (en) | Transceiver, chip, system on chip and chip system for increasing 2.4GHz frequency band communication distance | |
| JP2010258596A (en) | Radio communication equipment, radio repeater, and radio communication system | |
| CN213152052U (en) | Signal transceiving circuit and electronic device | |
| CN112311420B (en) | Single-standard dual-mode communication data frame configuration method, transceiving equipment and communication system | |
| CN114401521A (en) | Variable frequency communication transmission method and transmission system | |
| JP2005198077A (en) | Radio communication equipment | |
| CN112911737A (en) | Indoor distribution system | |
| CN105450285A (en) | Relay communication device for ultrashort-wave vehicle-mounted platform | |
| CN111093170A (en) | Vehicle-mounted sucker radio station and ad hoc network radio station system | |
| CN112910552B (en) | LiFi communication device and electronic equipment | |
| CN114449662B (en) | Frequency conversion processing circuit and access device | |
| WO2024065713A1 (en) | Radio frequency system and device |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |