CN106533538B - Satellite communication system real-time configuration method based on double buffer mechanisms - Google Patents
Satellite communication system real-time configuration method based on double buffer mechanisms Download PDFInfo
- Publication number
- CN106533538B CN106533538B CN201611011828.2A CN201611011828A CN106533538B CN 106533538 B CN106533538 B CN 106533538B CN 201611011828 A CN201611011828 A CN 201611011828A CN 106533538 B CN106533538 B CN 106533538B
- Authority
- CN
- China
- Prior art keywords
- configuration
- real
- time
- satellite communication
- communication system
- 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
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1851—Systems using a satellite or space-based relay
- H04B7/18519—Operations control, administration or maintenance
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/14—Relay systems
- H04B7/15—Active relay systems
- H04B7/185—Space-based or airborne stations; Stations for satellite systems
- H04B7/1853—Satellite systems for providing telephony service to a mobile station, i.e. mobile satellite service
- H04B7/18569—Arrangements for system physical machines management, i.e. for construction operations control, administration, maintenance
- H04B7/18573—Arrangements for system physical machines management, i.e. for construction operations control, administration, maintenance for operations control, administration or maintenance
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Astronomy & Astrophysics (AREA)
- Aviation & Aerospace Engineering (AREA)
- General Physics & Mathematics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radio Relay Systems (AREA)
Abstract
The invention discloses a satellite communication system real-time configuration method based on a double-buffer mechanism, which comprises the steps of firstly receiving a real-time configuration instruction, wherein the real-time configuration instruction comprises real-time replacement configuration; applying the received real-time replacement configuration to a current system configuration copy of the satellite communication system; and replacing the current system configuration with the real-time replacement configuration. The method can provide the real-time configuration capability of the satellite communication system under the condition of ensuring the stability of the satellite communication system, greatly improve the flexibility of the system and effectively reduce the system restart times and the user experience.
Description
Technical Field
The invention relates to the technical field of satellite communication, in particular to a satellite communication system real-time configuration method based on a double-buffer mechanism.
Background
The satellite communication has irreplaceable characteristics relative to the internet and a mobile network, does not need special wiring, does not need base stations built in various places, and can communicate only by building a central earth station and erecting terminal stations in the places. The terminal stations have now become portable devices, and the terminal stations can be easily migrated. The satellite communication has a large coverage area, and the satellite communication has a market in some areas where it is inconvenient to build a base station or wire, such as the sea and remote mountainous areas.
The satellite communication system is generally divided into a main station, a satellite and terminal stations, wherein the main station is connected with the internet, the terminal stations are deployed in remote areas or special areas, when the terminal stations need to access certain internet resources, a request is sent to the satellite, the satellite is forwarded to the main station, and the main station is forwarded to the internet; and after the internet resources are replied, the main station sends the internet resources to the satellite, and the satellite forwards the terminal station.
Satellite communication resources are very limited, and a pool of satellite communication channels is shared by the whole earth, so that the satellite communication resources are very precious, and the satellite communication process is a process for allocating and maintaining the satellite communication channels. The structural planning of the satellite communication channel is very important, and many factors such as demand, lease price, terminal station authority and the like need to be considered. Various communication behaviors of the satellite communication system can be configured, such as packaging format, login process, ACM control mode and the like.
Since satellite communication systems are all around the satellite communication channel resources, and configurable communication behaviors tend to be closely related to satellite communication, these configurations are all system core functions. When the system runs, modifying the core function is a dangerous behavior, and the system is very likely to be abnormal or even crash. Currently, most satellite communication systems adopt a static configuration mode, that is, corresponding configuration is performed before operation, and although the system is relatively stable, the flexibility of the system is lost. There are few satellite communication systems that support the implementation configuration, but only the relevant configuration of the periphery is modified in real time, and cannot go deep into the core.
Therefore, a real-time configuration method for a satellite communication system, which can change the configuration in real time, is needed.
Disclosure of Invention
Technical problem
In view of this, embodiments of the present invention provide a method for configuring a satellite communication system in real time based on a double buffer mechanism, so as to solve the problem of improving the flexibility of the current satellite communication system on the premise of maintaining the stability of the satellite communication system.
According to one aspect of the invention, a satellite communication system real-time configuration method based on a double-buffer mechanism is disclosed. A real-time configuration method of a satellite communication system based on a double-buffer mechanism comprises the following steps:
receiving a real-time configuration instruction, wherein the real-time configuration instruction comprises real-time replacement configuration;
applying the received real-time replacement configuration to a current system configuration copy of the satellite communication system;
and replacing the current system configuration with the real-time replacement configuration.
In one embodiment, after the receiving the real-time configuration instruction, the method further includes a step of verifying the real-time configuration instruction.
In one embodiment, the step of verifying the real-time configuration instruction includes the following steps:
detecting whether identity information of a sender of the real-time configuration instruction is in a trusted list of the satellite communication system or not, wherein the real-time configuration instruction comprises the identity information of the sender;
if yes, the verification is passed, and the step of applying the received real-time replacement configuration to the current system configuration of the satellite communication system is continuously executed;
if not, the system configuration replacement step is ended.
In one embodiment, the step of verifying the real-time configuration instruction further includes the steps of:
verifying whether a timestamp of the real-time configuration instruction exceeds a preset time, wherein the real-time configuration instruction comprises timestamp information;
if yes, ending the system configuration replacement step;
if not, the verification is passed, and the step of applying the received real-time replacement configuration to the current system configuration of the satellite communication system is continuously executed.
In one embodiment, after applying the received real-time replacement configuration to the current system configuration copy of the satellite communication system, the method further comprises the step of detecting the current system configuration copy of the satellite communication system.
In one embodiment, the detecting the current system configuration copy of the satellite communication system is performing constraint set detection on the current system configuration copy;
if the detection is passed, continuing to execute the step of replacing the current system configuration with the real-time replacement configuration;
and if the detection is failed, ending the system configuration replacement step.
In one embodiment, the step of replacing the current system configuration with the real-time replacement configuration is to replace the current system configuration with the real-time replacement configuration at a predetermined time.
In one embodiment, after the current system configuration is replaced by the real-time replacement configuration, the method further comprises the step of judging whether the operation of the satellite communication system is stable;
if the operation is stable, the real-time configuration of the satellite communication system is successfully replaced;
and if the operation is unstable, restoring the real-time replacement configuration to the original system configuration of the satellite communication system.
In one embodiment, the changing the current system configuration to the real-time change configuration includes seamless switching and fracture switching.
In one embodiment, when switching the current system configuration through the split, the method further comprises sending configuration modification information to the station where the system configuration switching has an effect.
By adopting the technical scheme, the invention can at least obtain the following technical effects: according to the real-time configuration method of the satellite communication system based on the double buffering mechanism, firstly, a real-time configuration instruction is received, wherein the real-time configuration instruction comprises real-time replacement configuration; applying the received real-time replacement configuration to a current system configuration copy of the satellite communication system; and replacing the current system configuration with the real-time replacement configuration. The method can provide the real-time configuration capability of the satellite communication system under the condition of ensuring the stability of the satellite communication system, greatly improve the flexibility of the system and effectively reduce the system restart times and the user experience.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention 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 the contents of the embodiments of the present invention and the drawings without creative efforts.
Fig. 1 is a flowchart of a method for configuring a satellite communication system in real time based on a double buffer mechanism according to an embodiment of the present invention;
fig. 2 is a flowchart of a method for configuring a satellite communication system in real time based on a double buffer mechanism according to another embodiment of the present invention.
Throughout the drawings, it should be noted that like reference numerals are used to depict the same or similar elements, features and structures.
Detailed Description
The following description with reference to the accompanying drawings is provided to assist in a comprehensive understanding of various embodiments of the disclosure as defined by the claims and their equivalents. The following description includes various specific details to aid understanding, but these details are to be regarded as illustrative only. Accordingly, those of ordinary skill in the art will recognize that various changes and modifications of the various embodiments described herein can be made without departing from the scope and spirit of the present disclosure. In addition, descriptions of well-known functions and constructions may be omitted for clarity and conciseness.
The terms and words used in the following description and claims are not limited to literature meanings, but are used only by the inventor to enable the disclosure to be clearly and consistently understood. Accordingly, it should be apparent to those skilled in the art that the following descriptions of the various embodiments of the present disclosure are provided for illustration only and not for the purpose of limiting the disclosure as defined by the appended claims and their equivalents.
It is to be understood that the singular forms also include the plural reference unless the context clearly dictates otherwise. Thus, for example, reference to a "component surface" includes reference to one or more such surfaces.
Fig. 1 is a flowchart illustrating a method for configuring a satellite communication system in real time based on a double buffer mechanism according to an embodiment of the present invention.
Fig. 2 is a flowchart of a method for configuring a satellite communication system in real time based on a double buffer mechanism according to another embodiment of the present invention.
Embodiments of the present invention are specifically illustrated below with reference to fig. 1-2.
Referring to fig. 1, a method 100 for configuring a satellite communication system in real time based on a double buffer mechanism according to this embodiment includes:
step S110: a real-time configuration instruction is received. Wherein, the real-time configuration instruction comprises real-time replacement configuration.
The real-time configuration instruction generally includes information such as real-time replacement configuration, sender identity information, and a sending timestamp.
Step S130: the received real-time replacement configuration is applied to a copy of the satellite communication system's current system configuration.
All the system configurations are put together and independently become a data set, two configuration sets and a current configuration pointer exist in the system at ordinary times, and each working thread accesses the corresponding configuration only through the configuration pointer and does not know which configuration set is used. When a real-time configuration command is received, it is first applied to a copy of the configuration.
Step S150: and replacing the current system configuration with a real-time replacement configuration.
When a real-time configuration command is received, it is first applied to a copy of the configuration, and then after a series of checks confirm that the configuration can be switched at the appropriate time, i.e. the configuration pointer is switched to the copy.
Referring to fig. 2, a method 200 for configuring a satellite communication system in real time based on a double buffer mechanism, the method 200 comprising:
step S210: a real-time configuration instruction is received. Wherein, the real-time configuration instruction comprises real-time replacement configuration.
The satellite communication system issues a real-time configuration interface that can receive real-time configuration commands, including satellite communication behavior, and logical structure changes of the satellite communication channel, divided into "seamless" and "fracture" handover configurations.
The real-time configuration instruction generally includes information such as real-time replacement configuration, sender identity information, and a sending timestamp.
Step S220: and verifying the real-time configuration instruction and judging whether the verification is passed.
The step of verifying the real-time configuration instruction comprises the following steps:
and detecting whether the identity information of a sender of a real-time configuration instruction is in a trusted list of the satellite communication system, wherein the real-time configuration instruction comprises the identity information of the sender.
If yes, the verification is passed, and the step of applying the received real-time replacement configuration to the current system configuration of the satellite communication system is continuously executed; if not, the system configuration replacement step is ended.
In another embodiment, the step of verifying the real-time configuration instruction may further include the steps of:
verifying whether a timestamp of the real-time configuration instruction exceeds a preset time, wherein the real-time configuration instruction comprises timestamp information;
if yes, ending the system configuration replacement step; if not, the verification is passed, and the step of applying the received real-time replacement configuration to the current system configuration of the satellite communication system is continuously executed. And continuing to execute step S230.
Or, in another embodiment, the timestamp determination is performed first. After receiving the real-time configuration command, the satellite communication system carries out identity verification on the configuration command: firstly discarding the command with overtime timestamp, then detecting whether the IP of a sender is in a trusted list, then decrypting according to an agreed encryption algorithm, finally verifying the serial number of the head of the command, generating the serial number according to the time and the IP, feeding back the successful authentication to a network manager, and receiving the acknowledgement ACK of the command.
Step S230: the received real-time change configuration is applied to a current copy of the system configuration for the satellite communications system.
A double-buffering mechanism is used in the satellite communication system, after identity verification is completed, a current system configuration copy is copied, a new configuration is applied to the copy, the configuration constraint condition set is used for verifying the new configuration, and if the new configuration fails, failure is fed back to a network manager.
Step S250: after applying the received real-time change configuration to the current system configuration copy of the satellite communication system, the current system configuration copy of the satellite communication system is detected.
The detection of the current system configuration copy of the satellite communication system is a constraint set detection of the current system configuration copy.
If the detection is passed, continuing to execute the step of replacing the current system configuration with the real-time replacement configuration, namely executing step S250; and if the detection is failed, ending the step of replacing the system configuration.
Step S250: and replacing the current system configuration with the real-time replacement configuration.
Wherein the step of replacing the current system configuration with the real-time replacement configuration is to replace the current system configuration with the real-time replacement configuration at a predetermined time. For different real-time configuration commands, the currently used configuration information is replaced with the configuration copy at a suitable time.
Step S260: and judging whether the satellite communication system operates stably.
After the current system configuration is replaced by the real-time replacement configuration, the method also comprises the step of judging whether the operation of the satellite communication system is stable;
if the operation is stable, the real-time configuration of the satellite communication system is successfully replaced; and if the operation is unstable, restoring the real-time replacement configuration to the original system configuration of the satellite communication system. That is, when the system finds that the new configuration is not working properly, the configuration pointer is also switched back. In this way, firstly, the stability of the system operation is ensured.
If the system is in failure after the replacement configuration, the system automatically returns to an old configuration copy and feeds back the failure of the real-time configuration of the network manager.
Wherein changing a current system configuration to the real-time change configuration includes seamless switching and fracture switching. When switching the current system configuration through the crack, the method also comprises the step of sending configuration modification information to the station which has the influence of the system configuration switching.
After the real-time configuration is successful, aiming at different types of configuration modification, different processing modes are adopted, if the configuration is 'seamless' switching configuration, no processing is adopted, the system normally operates according to the new configuration, if the configuration is 'crack' switching configuration, the small stations influenced by the configuration switching are evaluated, and a configuration modification notice is issued to the small stations.
The real-time configuration method of the satellite communication system based on the double-buffer mechanism, which is provided by the invention, introduces the double-buffer mechanism, can instantly change the configuration of the satellite communication system, and reduces unnecessary system unavailable time and resource waste; or the old configuration can be reserved after the new configuration is replaced, and the configuration is instantly backed off at the moment when the new configuration cannot normally operate; the newly issued configuration is firstly applied to a copy of the system configuration, then the configuration constraint is used for detection, and the current configuration can be replaced only through the detected configuration; the real-time configuration method can prevent the disguised network manager from damaging the network by using the safety mechanism of identity authentication, and can prevent the disguised network manager from damaging the network by using the safety mechanism of identity authentication; the configuration method uses an inertia mode, and after the configuration is replaced, a configuration modification notice is sent only when the small station cannot work normally. The real-time configuration method can greatly improve the flexibility of the system, effectively reduce the restart times of the satellite communication system under the condition of ensuring the stability, and provide good user experience for users.
In the invention, all the system configurations are put together and independently become a data set, two configuration sets and a current configuration pointer exist in the system at ordinary times, and each working thread only accesses the corresponding configuration through the configuration pointer and does not know which configuration set is used. When a real-time configuration command is received, it is first applied to the copy of the configuration, then the copy is detected, and when detected by the set of constraints, the configuration can only be switched at the right moment, i.e. the configuration pointer is switched to the copy. When the system finds that the new configuration cannot work normally, the configuration pointer is switched back.
It should be noted that the various embodiments of the present disclosure as described above generally relate to the processing of input data and the generation of output data to some extent. This input data processing and output data generation may be implemented in hardware or software in combination with hardware. For example, certain electronic components may be employed in a mobile device or similar or related circuitry for implementing the functions associated with the various embodiments of the present disclosure as described above. Alternatively, one or more processors operating in accordance with stored instructions may implement the functions associated with the various embodiments of the present disclosure as described above. If so, it is within the scope of the present disclosure that these instructions may be stored on one or more non-transitory processor-readable media. Examples of the processor-readable medium include read-only memory (ROM), random-access memory (RAM), CD-ROMs, magnetic tapes, floppy disks, and optical data storage devices. In addition, functional computer programs, instructions, and instruction segments for implementing the present disclosure can be easily construed by programmers skilled in the art to which the present disclosure pertains.
While the disclosure has been shown and described with reference to various embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the disclosure as defined by the appended claims and their equivalents.
Claims (8)
1. A real-time configuration method of a satellite communication system based on a double-buffer mechanism is characterized by comprising the following steps:
receiving a real-time configuration instruction, wherein the real-time configuration instruction comprises real-time replacement configuration;
applying the received real-time replacement configuration to a current system configuration copy of the satellite communication system;
replacing the current system configuration with the real-time replacement configuration,
wherein after the real-time configuration instruction is received, the method further comprises the step of verifying the real-time configuration instruction,
the step of verifying the real-time configuration instruction comprises the following steps:
detecting whether identity information of a sender of the real-time configuration instruction is in a trusted list of the satellite communication system or not, wherein the real-time configuration instruction comprises the identity information of the sender;
if yes, the verification is passed, and the step of applying the received real-time replacement configuration to the current system configuration of the satellite communication system is continuously executed;
if not, the system configuration replacement step is ended.
2. The method for real-time configuration of a satellite communication system based on a double buffering mechanism according to claim 1, wherein the step of verifying the real-time configuration command further comprises the steps of:
verifying whether a timestamp of the real-time configuration instruction exceeds a preset time, wherein the real-time configuration instruction comprises timestamp information;
if yes, ending the system configuration replacement step;
if not, the verification is passed, and the step of applying the received real-time replacement configuration to the current system configuration of the satellite communication system is continuously executed.
3. The method of claim 1, further comprising the step of detecting a current system configuration copy of the satellite communication system after applying the received real-time change configuration to the current system configuration copy of the satellite communication system.
4. The method according to claim 3, wherein the detecting the current system configuration copy of the satellite communication system is a constrained set detection of the current system configuration copy;
if the detection is passed, continuing to execute the step of replacing the current system configuration with the real-time replacement configuration;
and if the detection is failed, ending the system configuration replacement step.
5. The method for real-time configuration of a satellite communication system based on a double buffer mechanism as claimed in claim 1, wherein the step of replacing the current system configuration with the real-time replacement configuration is to replace the current system configuration with the real-time replacement configuration at a predetermined time.
6. The method for configuring a satellite communication system according to claim 1 or 5, further comprising the step of determining whether the operation of the satellite communication system is stable after the current system configuration is changed to the real-time change configuration;
if the operation is stable, the real-time configuration of the satellite communication system is successfully replaced;
and if the operation is unstable, restoring the real-time replacement configuration to the original system configuration of the satellite communication system.
7. The method according to claim 1, wherein the changing of the current system configuration to the real-time changing configuration comprises seamless switching and split switching.
8. The method of claim 7, wherein the switching of the current system configuration through the split further comprises sending configuration modification information to the station where the switching of the system configuration has an effect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611011828.2A CN106533538B (en) | 2016-11-17 | 2016-11-17 | Satellite communication system real-time configuration method based on double buffer mechanisms |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611011828.2A CN106533538B (en) | 2016-11-17 | 2016-11-17 | Satellite communication system real-time configuration method based on double buffer mechanisms |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106533538A CN106533538A (en) | 2017-03-22 |
| CN106533538B true CN106533538B (en) | 2020-05-26 |
Family
ID=58352167
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611011828.2A Active CN106533538B (en) | 2016-11-17 | 2016-11-17 | Satellite communication system real-time configuration method based on double buffer mechanisms |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106533538B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1058410A2 (en) * | 1999-06-03 | 2000-12-06 | Hughes Electronics Corporation | Method and system for providing satellite communications using on-orbit payload configuration and reconfiguration |
| CN101917285A (en) * | 2010-07-29 | 2010-12-15 | 航天东方红卫星有限公司 | Three-machine realization method for moonlet service host machine double-machine cooling structure |
| CN102831022A (en) * | 2012-07-27 | 2012-12-19 | 曙光信息产业(北京)有限公司 | Method and device for modifying system configuration |
| CN104092571A (en) * | 2014-07-08 | 2014-10-08 | 成都振芯科技股份有限公司 | Remote and automatic satellite network configuration system and method based on Beidou |
-
2016
- 2016-11-17 CN CN201611011828.2A patent/CN106533538B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1058410A2 (en) * | 1999-06-03 | 2000-12-06 | Hughes Electronics Corporation | Method and system for providing satellite communications using on-orbit payload configuration and reconfiguration |
| CN101917285A (en) * | 2010-07-29 | 2010-12-15 | 航天东方红卫星有限公司 | Three-machine realization method for moonlet service host machine double-machine cooling structure |
| CN102831022A (en) * | 2012-07-27 | 2012-12-19 | 曙光信息产业(北京)有限公司 | Method and device for modifying system configuration |
| CN104092571A (en) * | 2014-07-08 | 2014-10-08 | 成都振芯科技股份有限公司 | Remote and automatic satellite network configuration system and method based on Beidou |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106533538A (en) | 2017-03-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7533178B2 (en) | Resuming a computing session when rebooting a computing device | |
| US11546932B2 (en) | Data transmission method, terminal and network side device | |
| US10541862B2 (en) | VNF processing policy determining method, apparatus, and system | |
| EP3334089B1 (en) | Method and device for onboarding network service descriptor | |
| US11824714B2 (en) | Method and apparatus for updating an edge node, device, medium and program product | |
| EP3209005B1 (en) | Task processing device, intelligent apparatus, task processing method and baseband processor | |
| WO2018121354A1 (en) | Method for migrating physical network function (pnf) and related device | |
| EP3402123B1 (en) | Method and apparatus for transmitting request message | |
| CN104158707A (en) | Method and device of detecting and processing brain split in cluster | |
| JP2020506629A (en) | Routing method and apparatus | |
| CN111049682B (en) | Method, system and central network equipment for realizing uninterrupted service upgrade | |
| CN107770035B (en) | Method and device for pushing offline notification | |
| CN108600156B (en) | Server and security authentication method | |
| CN104898993B (en) | Information processing apparatus, image forming apparatus, and control apparatus and method for system | |
| CN106533538B (en) | Satellite communication system real-time configuration method based on double buffer mechanisms | |
| CN107306289B (en) | Load balancing method and device based on cloud computing | |
| US20200128608A1 (en) | Context release method, device and system | |
| CN111563009A (en) | File synchronization method, system and storage medium based on dual-computer redundancy system | |
| WO2017066954A1 (en) | Method for implementing base station self-healing and base station | |
| US11259303B2 (en) | Method for managing a high frequency connection a terminal and a base station | |
| KR102000162B1 (en) | Apparatus and method for supporting software update of low specification device | |
| CN105260246A (en) | Method and device for calling application system | |
| KR102323431B1 (en) | Method for providing dualization | |
| CN106332078B (en) | dot1x user authentication system, method and device | |
| CN106330415B (en) | Disaster recovery method, device and communication system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | 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 |