CN115066040B - Software architecture based on radio remote unit hardware white-box - Google Patents
Software architecture based on radio remote unit hardware white-box Download PDFInfo
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- 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
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Abstract
The invention discloses a software architecture based on white-box hardware of a radio remote unit, and relates to the technical field of wireless communication. The software architecture comprises a firmware module, a hardware module and a software module, wherein the firmware module is used for completing the drive configuration of hardware and forming an extensible application programmable interface after completing the abstraction and encapsulation of the capability provided by the hardware; the safety module is used for realizing the safety operation on the bottom hardware based on the firmware module; and the application software module is used for completing application software development based on the safety module, realizing and expanding system level functions of the remote radio unit and realizing wireless communication network interaction. The invention can fully exert the capability of hardware and ensure the safety at the same time, and realizes the white-box target of the radio remote unit hardware.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a software architecture based on white-box hardware of a radio remote unit.
Background
In wireless communication, the opening of radio access network interfaces, hardware white-box, software development, and network intelligence are important trends. Breaking through the traditional closed wireless access network framework, reducing the deployment cost of the wireless access network, improving the agility of the wireless access network and accelerating innovation are important conditions for realizing the internet of everything and realizing the network development trend. A Radio Remote Unit (RRU) is a core network element in a wireless communication network, and is responsible for converting digital signals into analog radio frequency signals and transmitting the radio frequency signals to a wireless environment, and also can receive wireless radio frequency signals and convert the received radio frequency signals into digital signals.
Therefore, the white-box realization of the radio remote unit hardware is very important for reducing the whole equipment cost. After the hardware white-box is realized, safe, flexible and efficient software development is critical to providing differentiated equipment types and service deployment in different application scenes and achieving personalized service purpose on whether the hardware white-box is successful or not. Therefore, how to design a software architecture that can satisfy the above requirements and objectives becomes a problem to be solved.
Disclosure of Invention
In order to overcome the above problems or at least partially solve the above problems, embodiments of the present invention provide a software architecture based on white-box of the hardware of the radio remote unit, which can fully utilize the capability of the hardware and ensure the security, thereby achieving the goal of white-box of the hardware of the radio remote unit.
The embodiment of the invention is realized by the following steps:
the embodiment of the invention provides a software architecture based on radio remote unit hardware white-box, which comprises a firmware module, a security module and an application software module, wherein:
the firmware module is used for finishing the drive configuration of hardware and forming an extensible application programmable interface after finishing the abstraction and encapsulation of the capability provided by the hardware;
the safety module is used for realizing the safety operation on the bottom hardware based on the firmware module;
and the application software module is used for completing application software development based on the safety module, realizing and expanding system level functions of the remote radio unit and realizing wireless communication network interaction.
In order to solve the technical problem of how to design a software architecture for realizing the white-box of the hardware of the radio remote unit and meeting the purpose of personalized service, the invention designs the software architecture based on the white-box of the hardware of the radio remote unit, the software architecture comprises a firmware module, a safety module, an application software module and the like, the software development efficiency on the basis of the white-box of the hardware can be obviously improved through the cooperation of the three modules, the integration and deployment efficiency of a wireless access network is obviously improved, and the agility of the wireless access network is improved. The invention can fully exert the capability of hardware and ensure the safety at the same time, and realizes the white-box target of the radio remote unit hardware.
In some embodiments of the present invention, the firmware module includes a hardware driver layer, a hardware abstraction layer, a hardware encapsulation layer, and a standard application programming interface layer, wherein:
the hardware driving layer is used for providing an operation interface of the external equipment for the upper layer program and realizing the driving program of the equipment;
the hardware abstraction layer is used for configuring the independent configurable chip by using an interface provided by the hardware driving layer, realizing initialization and configuration of an auxiliary control unit in the radio remote unit and finishing abstraction of various capabilities provided by a digital chip in the radio remote unit;
the hardware encapsulation layer is used for encapsulating according to the minimum granularity of the capability provided by the hardware on the basis of the hardware abstraction layer;
and the standard application programming interface layer is used for combining the basic functions of the remote radio unit provided by the hardware packaging layer and providing an interface required by the system level function of the remote radio unit.
In some embodiments of the present invention, the operation interface includes SPI, I2C, DMA, flash, GPIO, UIO, and interrupt interface.
In some embodiments of the present invention, the configurable chip includes a clock chip, a digital-to-analog conversion/analog-to-digital conversion chip, a power amplifier control chip, and a controllable power supply chip.
In some embodiments of the invention, the capabilities provided by the hardware include output power level, number of carriers, and carrier bandwidth.
In some embodiments of the present invention, the standard application programming interface layer includes an RRU channel service unit, a service data unit, a system diagnostic data unit, a system self-detection unit, a system log unit, and a system alarm unit, where:
the RRU channel service unit is used for establishing and deleting carrier waves;
the service data unit is used for acquiring antenna calibration data and service data;
the system diagnosis data unit is used for counting the power of a digital domain, and acquiring and analyzing current monitoring data, voltage monitoring data and temperature monitoring data;
the system self-detection unit is used for acquiring and analyzing self-test data to realize automatic detection of the system;
the system log unit is used for recording and generating a system log according to the information of hardware, software and system problems in the system;
and the system alarm unit is used for carrying out system abnormity alarm.
In some embodiments of the present invention, the security module includes a security and standard layer for providing a security interface and implementing secure operation of hardware.
In some embodiments of the present invention, the application software module includes an application software business layer and an application management layer, wherein:
the software business layer is used for realizing and expanding the development of the system level function of the radio remote unit by utilizing the capability provided by hardware;
and the application management layer is used for realizing interaction with other network elements in the wireless communication network.
In some embodiments of the present invention, the software architecture based on the radio remote unit hardware white-box further includes a white-box extensible interface, and the white-box extensible interface is located above the standard api layer.
In some embodiments of the present invention, the rfu hardware-whiteboxing-based software architecture further includes a trusted extensible interface, which is located above the security and standard layer and is used for providing a standard API set after security processing.
The embodiment of the invention at least has the following advantages or beneficial effects:
the embodiment of the invention provides a software architecture based on radio remote unit hardware white-box, which comprises a firmware module, a security module, an application software module and the like, wherein the software architecture can obviously improve the software development efficiency on the basis of hardware white-box through the cooperation of the three modules, obviously improve the integration and deployment efficiency of a wireless access network and improve the agility of the wireless access network. The invention can fully exert the capability of hardware and ensure the safety at the same time, and realizes the white-box target of the radio remote unit hardware.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a basic functional block diagram of a software architecture based on white-box hardware of a remote radio unit according to an embodiment of the present invention;
fig. 2 is a layer diagram of a software architecture based on white-boxing of the remote radio unit hardware according to an embodiment of the present invention;
fig. 3 is a schematic diagram of a software architecture based on white-box hardware of a radio remote unit according to an embodiment of the present invention;
fig. 4 is a schematic diagram of a firmware module in a software architecture based on white-box of the remote radio unit hardware according to an embodiment of the present invention;
fig. 5 is a schematic diagram of application software modules in a software architecture based on white-box hardware of a radio remote unit according to an embodiment of the present invention.
Description of reference numerals: 100. a firmware module; 200. a security module; 300. and an application software module.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, 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 some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. 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.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined or explained in subsequent figures.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
Example (b):
as shown in fig. 1 to fig. 5, an embodiment of the present invention provides a software architecture based on white-box hardware of a radio remote unit, including a firmware module 100, a security module 200, and an application software module 300, where:
the firmware module 100 is configured to complete driver configuration of hardware, and form an extensible application programming interface after completing abstraction and encapsulation of capabilities provided by the hardware; the hardware is mainly a required chip, and comprises an ADC, a DAC, an FPGA, a clock chip and the like.
Further, the firmware module 100 includes a hardware driver layer, a hardware abstraction layer, a hardware encapsulation layer, and a standard api layer, where:
the hardware driving layer is used for providing an operation interface of external equipment for the upper program and realizing a driving program of the equipment; and a Hardware Driver Layer (HDL) which is closely related to a Hardware design scheme. Through this layer, an operation interface of an external device is provided for an upper layer program, and a driver of the device is realized. Included in this layer, and not limited to, are the following device interfaces: SPI, I2C, DMA, flash, GPIO, UIO, interrupt, etc.
The hardware abstraction layer is used for configuring the independent configurable chip by using an interface provided by the hardware driving layer, realizing initialization and configuration of an auxiliary control unit in the radio remote unit and finishing abstraction of various capabilities provided by a digital chip in the radio remote unit; hardware Abstraction Layer (HAL), this Layer implements Abstraction of the basic capabilities provided by the Hardware. The configuration of an independent configurable chip (including but not limited to a clock chip, a digital-to-analog conversion/analog-to-digital conversion chip, a power amplifier control chip, a controllable power supply chip and the like) and the initialization and configuration of an auxiliary control unit in a remote radio unit (including but not limited to an external I/O, various sensors, an electrically-adjusted antenna module and the like) are realized by utilizing an interface provided by a hardware driving layer and a hardware abstraction layer; meanwhile, the hardware abstraction layer abstracts various capabilities provided by a digital chip in the radio remote unit (including but not limited to a forwarding interface, digital up-conversion, digital down-conversion, digital pre-distortion, amplitude compensation, phase compensation, TDD control, power statistics, self-test signals, etc.).
The hardware encapsulation layer is used for encapsulating according to the minimum granularity of the capability provided by the hardware on the basis of the hardware abstraction layer; the capabilities provided by the hardware include output power level, carrier number, carrier bandwidth, etc., as well as interfaces, data links, product assist functions, and product self-check functions.
In some embodiments of the invention, a Hardware Encapsulation Layer (HEL) is encapsulated based on a Hardware abstraction Layer at a minimum granularity of capabilities provided by the Hardware. The encapsulation of the layer can make the basic functions of the remote radio unit seen by the upper layer software transparent relative to the hardware. The hardware encapsulation layer encapsulates the basic functions of the radio remote unit (including and not limited to):
an interface part: CPRI or eCPRI; the data link part: lowPHY, digital front end, peak clipping, digital predistortion; product auxiliary function: TDD, time delay compensation, phase compensation, electrically tunable antenna, external IO, etc.; the product self-checking function: self-test signals, sensors, antenna calibration data, power meters, hardware protection functions, and the like.
And the standard application programming interface layer is used for combining the basic functions of the remote radio unit provided by the hardware packaging layer and providing an interface required by the system level function of the remote radio unit. The basic functions of the remote radio unit include output power, digital power statistics, carrier interface and the like.
Furthermore, the configurable chip comprises a clock chip, a digital-to-analog conversion/analog-to-digital conversion chip, a power amplifier control chip and a controllable power supply chip.
Further, the standard application programming interface layer includes an RRU channel service unit, a service data unit, a system diagnostic data unit, a system self-detection unit, a system log unit, and a system alarm unit, where:
the RRU channel service unit is used for establishing and deleting carrier waves; the service data unit is used for acquiring antenna calibration data and service data; the system diagnosis data unit is used for carrying out digital domain power statistics, and acquiring and analyzing current monitoring data, voltage monitoring data and temperature monitoring data; the system self-detection unit is used for acquiring and analyzing self-test data to realize automatic detection of the system; the system log unit is used for recording and generating a system log according to the information of hardware, software and system problems in the system; and the system alarm unit is used for carrying out system abnormity alarm.
In some embodiments of the present invention, a Standard application programming interface (SAL) Layer combines the basic functions of the remote radio unit provided by the hardware packet Layer to provide an interface required by the system level functions of the remote radio unit. The interface fully reflects the capability of the radio remote unit hardware, and after being packaged, the related functions are decoupled with the hardware, so that the purpose of white-box hardware is achieved, and meanwhile, rich standardized interfaces are provided for upper-layer software. This layer includes but is not limited to the following functional modules:
service capability of RRU channel: carrier establishment and deletion; service data: antenna calibration data and service data acquisition; system diagnostic data: digital domain power statistics, current monitoring data, voltage monitoring data and temperature monitoring data; self-detection capability of the system: self-test data; system logging capabilities; system alarm capability.
Closely associated with the hardware in some embodiments of the invention is a firmware module 100, which includes a hardware driver layer, a hardware abstraction layer, a hardware encapsulation layer, and a standard application programming interface layer. The firmware part completes the drive configuration work of related hardware and forms an extensible application programmable interface after completing the abstraction and encapsulation of the capability provided by the hardware on the basis of the drive configuration work.
A security module 200 for implementing secure operations on the underlying hardware based on the firmware module 100;
further, the security module 200 includes a security and standard layer for providing a security interface and implementing the secure operation of the hardware.
In some embodiments of the invention, security and Standard Layer (SSL), hardware white-boxed, security considerations are more important. In the present invention, a software security layer (security and standard layer) is defined above the firmware module 100. The software of the layer can be developed by a third party on the basis of a firmware, and reliable safety protection is provided. In this way, the hardware and firmware provider cannot perform this operation on the hardware, cannot obtain the status information of the device operation, and even cannot obtain the specific data of the device operation without authorization. After the security layer processing, a new standard interface is provided upwards, and an application layer software developer can develop related applications with confidence.
The application software module 300 is configured to complete application software development based on the security module 200, implement and expand system-level functions of the remote radio unit, and implement wireless communication network interaction.
Further, the application software module 300 includes an application software service layer and an application management layer, where:
the software business layer is used for realizing and expanding the development of the system level function of the radio remote unit by utilizing the capability provided by the hardware; and the application management layer is used for realizing interaction with other network elements in the wireless communication network.
In some embodiments of the present invention, an Application Service Layer (ASL) is used to implement the development of RRU system level functions by using the capability provided by hardware. The hardware provider can provide the reference design of the layer, and can also completely deliver the reference design to a third party or a client for development. By using basic capabilities provided by hardware, the layer can not only realize system level functions (including but not limited to carrier configuration, antenna calibration algorithm, automatic gain control, standing wave detection, monitoring and the like) of the traditional remote radio unit, but also further expand the capabilities of the remote radio unit (new technologies such as artificial intelligence, machine learning, big data and the like are introduced to realize behavior detection and equipment self-checking of the remote radio unit, so that faster equipment deployment is realized, and lower-cost equipment maintenance is realized). An Application Management Layer (AML), which is responsible for the interaction with other network elements in the wireless communication network. The hardware provider can provide the reference design of the layer, and can also completely deliver the reference design to a third party or a client for development. The customized development greatly improves the integration efficiency of the wireless access network and obviously improves the intelligent degree of the network.
In order to solve the technical problem of how to design a software architecture which can realize the white-box of the hardware of the radio remote unit and simultaneously meet the purpose of personalized service, the invention designs the software architecture based on the white-box of the hardware of the radio remote unit, the software architecture comprises a firmware module 100, a security module 200, an application software module 300 and the like, the software development efficiency on the basis of the white-box of the hardware can be obviously improved through the cooperation of the three modules, the integration and deployment efficiency of a wireless access network is obviously improved, and the agility of the wireless access network is improved. The invention can fully exert the capability of hardware and ensure the safety at the same time, and realizes the white-box target of the radio remote unit hardware.
In some embodiments of the present invention, the software architecture based on the radio remote unit hardware white-box further includes a white-box extensible interface, and the white-box extensible interface is located above the standard api layer.
In order to better meet the requirement of hardware White-box, the invention also provides a White-box extensible Interface (WSI), which is positioned on the Standard application programming Interface (SAL), is a Standard API set and reflects the hardware capability of the White-box.
In some embodiments of the present invention, the software architecture based on the radio remote unit hardware white-box further includes a trusted extensible interface, which is located above the security and standard layer and is used for providing a standard API set after security processing.
In order to better meet the requirement of hardware white-box, the invention also provides a Trusted extensible Interface, namely a Trusted extensible application programming Interface (TSI), which is positioned above a Security and Standard Layer (SSL) and provides a Standard API set after Security processing.
In the embodiments provided in the present application, it should be understood that the disclosed method and system can be implemented in other ways. The method and system embodiments described above are merely illustrative, for example, the flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of methods and systems, methods and computer program products according to various embodiments of the present application. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, functional modules in the embodiments of the present application may be integrated together to form an independent part, or each module may exist alone, or two or more modules may be integrated to form an independent part.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
It will be evident to those skilled in the art that the present application is not limited to the details of the foregoing illustrative embodiments, and that the present application may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Claims (8)
1. A software system based on radio remote unit hardware white-box is characterized by comprising a firmware module, a security module and an application software module, wherein:
the firmware module is used for finishing the drive configuration of hardware and forming an extensible application programmable interface after finishing the abstraction and encapsulation of the capability provided by the hardware; the firmware module comprises a hardware driving layer, a hardware abstraction layer, a hardware encapsulation layer and a standard application programming interface layer, wherein: the hardware driving layer is used for providing an operation interface of the external equipment for the upper layer program and realizing the driving program of the equipment; the hardware abstraction layer is used for configuring the independent configurable chip by using an interface provided by the hardware driving layer, realizing initialization and configuration of an auxiliary control unit in the radio remote unit and finishing abstraction of various capabilities provided by a digital chip in the radio remote unit; the hardware encapsulation layer is used for encapsulating according to the minimum granularity of the capability provided by the hardware on the basis of the hardware abstraction layer; the standard application programming interface layer is used for combining the basic functions of the remote radio unit provided by the hardware package layer and providing an interface required by the system level function of the remote radio unit; the standard application programming interface layer comprises an RRU channel service unit, a service data unit, a system diagnosis data unit, a system self-detection unit, a system log unit and a system alarm unit, wherein: the RRU channel service unit is used for establishing and deleting carrier waves; the service data unit is used for acquiring antenna calibration data and service data; the system diagnosis data unit is used for carrying out digital domain power statistics, and acquiring and analyzing current monitoring data, voltage monitoring data and temperature monitoring data; the system self-detection unit is used for acquiring and analyzing self-test data to realize automatic detection of the system; the system log unit is used for recording and generating a system log according to the information of hardware, software and system problems in the system; the system alarm unit is used for carrying out system abnormity alarm;
the safety module is used for realizing the safety operation on the bottom hardware based on the firmware module;
and the application software module is used for completing application software development based on the safety module, realizing and expanding system level functions of the remote radio unit and realizing wireless communication network interaction.
2. The system according to claim 1, wherein the operation interface comprises SPI, I2C, DMA, flash, GPIO, UIO and interrupt interface.
3. The radio remote unit hardware white-box based software system according to claim 1, wherein the configurable chip comprises a clock chip, a digital-to-analog conversion/analog-to-digital conversion chip, a power amplifier control chip and a controllable power supply chip.
4. The system according to claim 1, wherein the hardware provides capabilities including output power level, number of carriers and carrier bandwidth.
5. The system according to claim 1, wherein the security module includes a security and standard layer for providing a secure interface to implement secure operation of hardware.
6. The system according to claim 1, wherein the application software modules include an application software service layer and an application management layer, and wherein:
the software business layer is used for realizing and expanding the development of the system level function of the radio remote unit by utilizing the capability provided by hardware;
and the application management layer is used for realizing interaction with other network elements in the wireless communication network.
7. The system according to claim 1, further comprising a white-box extensible interface, said white-box extensible interface being located above said standard api layer.
8. The system according to claim 5, further comprising a trusted extensible interface, located above the security and standard layer, for providing the standard API set after security processing.
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| O-RAN Alliance.S2-1908728 "LS from O-RAN Alliance: LS on O-RAN Alliance amp * |
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