Satellite-borne high-performance base station baseband processing unit based on industrial-grade device

Abstract

The utility model discloses a satellite-borne high-performance base station baseband processing unit based on an industrial-grade device, and the base station baseband processing unit comprises a management and control module, a 5G baseband chip, an interface module, a power module, and a clock module which are electrically connected with a central processor in a bidirectional manner. The central processing unit is used for receiving and transmitting a high-level baseband protocol and a control signaling; the output end of the 5G baseband chip is bidirectionally and electrically connected with the interface module; the output end of the interface module is bidirectionally and electrically connected with the optical module, and the optical module is used for processing a forward transmission interface and completing a photoelectric signal conversion function; the power supply module is used for integrally supplying power to the base station baseband processing unit; and the clock module is used for providing a system clock and a service clock for the base station baseband processing unit. The base station baseband processing unit provided by the utility model has the advantages of low power consumption, light weight and low cost.

Description

TECHNICAL FIELD

[0001] The utility model relates to satellite communication technical field especially relates to a kind of high-performance base station baseband processing unit based on industrial grade device. BACKGROUND

[0002] In recent years, China's information communication technology field is in the key period of overall transformation. Ground mobile communication is marching towards the 5G era with characteristics of high speed, low latency and large-scale access, and the current technology has become mature. At the same time, emerging satellite internet space information technology represented by low-orbit broadband constellation system has become one of the important development directions with its global, all-way, ubiquitous broadband data access capability.

[0003] Traditional satellite communication adopts high-grade aerospace devices to improve on-orbit reliability; this method has the disadvantages of high cost and high power consumption. SUMMARY

[0004] The utility model aims at providing a kind of high-performance base station baseband processing unit based on industrial grade device on satellite, effectively solve the problem raised in the above background technology.

[0005] To achieve the above object, the utility model provides the following technical scheme.

[0006] A kind of high-performance base station baseband processing unit based on industrial grade device on satellite, characterized by: the base station baseband processing unit includes the control module that is bidirectionally electrically connected with central processing unit, 5G baseband chip, interface module, power module and clock module, the central processing unit is used for the transceiver processing of high-layer baseband protocol and control signaling;The control module is used for receiving on-board command and module state monitoring, state reporting, base station baseband processing unit internal power-on timing control;5G baseband chip is used for bottom baseband protocol processing and software algorithm;The output of 5G baseband chip is bidirectionally electrically connected with the interface module;The interface module is used for hardware acceleration in baseband protocol processing, realizes encryption / decryption and interface conversion;The output of interface module is bidirectionally electrically connected with optical module, and the optical module is used for front interface processing, completes photoelectric signal conversion function;The power module is used for the whole power supply of base station baseband processing unit;The clock module is used for providing system clock and service clock for base station baseband processing unit.

[0007] Preferably, the output of the optical module is respectively bidirectionally electrically connected with S / C antenna, routing exchange component and Ka antenna.

[0008] Preferably, the output of the control module is bidirectionally electrically connected with integrated electronic component and autonomous control component.

[0009] Preferably, the central processor is a Feitengyun S5000C high-performance general-purpose microprocessor.

[0010] Preferably, the 5G baseband chip is a PC802 chip of Bicochi Company.

[0011] Preferably, the control module is a FLASH type FPGA, and the interface module is an SRAM type FPGA.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] (1) the utility model discloses a control module, a 5G baseband chip, an interface module, a power module and a clock module are connected with the central processor bidirectionally, and the central processor is used for the transceiving processing of high-layer baseband protocol and control signaling;The control module is used for receiving the on-board command and module state monitoring, state reporting, base station baseband processing unit internal power-on timing control;The 5G baseband chip is used for bottom layer baseband protocol processing and software algorithm;The output end of the 5G baseband chip is bidirectionally electrically connected with the interface module;The interface module is used for hardware acceleration in baseband protocol processing, realizes encryption / decryption and interface conversion;The output end of the interface module is bidirectionally electrically connected with the optical module, and the optical module is used for front interface processing and completes photoelectric signal conversion function;The power module is used for the overall power supply of base station baseband processing unit;The clock module is used for providing system clock and service clock for base station baseband processing unit.The base station baseband processing unit of the utility model has the advantages of low power consumption, light weight and low cost. BRIEF DESCRIPTION OF DRAWINGS

[0014] Fig. 1 It is the overall block diagram of the utility model;

[0015] Fig. 2 It is the connection block diagram of the clock module of the utility model. DETAILED DESCRIPTION

[0016] The technical scheme in the embodiments of the utility model will be described clearly and completely in combination with the drawings in the embodiments of the utility model, and obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0017] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] like Figs. 1-2 As shown, the base station baseband processing unit includes a management and control module, a 5G baseband chip, an interface module, a power supply module, and a clock module, all bidirectionally electrically connected to the central processing unit (CPU). The CPU is used for transmitting and receiving higher-layer baseband protocols and control signaling. Specifically, the CPU is a Phytium Tengyun S5000C high-performance general-purpose microprocessor. The CPU mainly handles higher-layer baseband protocols and control signaling. Considering the bit error effects caused by single-event upsets and potential signal flips in the storage devices themselves in the space environment, this embodiment incorporates reliability design during the S5000C firmware injection process. The management and control module stores the wirelessly received updated firmware in three separate NOR flash memories, located outside the management and control module. During loading, a 2-out-of-3 verification check is performed before writing the firmware to the backup NOR flash. After confirming the firmware's correctness, the S5000C's connected NOR flash is switched, and the S5000C is reset. After the system returns to normal operation, the main NOR flash is then written, and firmware confirmation is performed again. During the operation of the S5000C, the control module monitors its operating status in real time. If the S5000C fails to start up abnormally and cannot periodically report its status, the firmware backup and recovery mechanism is triggered. These measures ensure the reliability of the central processing unit in the space environment.

[0020] The control module is used for receiving the on-board command and the module state monitoring, state reporting, and internal power-on timing control of the base station baseband processing unit. Specifically, the control module selects a FLASH type FPGA, which is not prone to single event upset error. When other components of the base station baseband processing unit fail, the control module can still perform state monitoring and firmware refreshing on the base station baseband processing unit, thereby improving the reliability of the entire base station baseband processing unit. Meanwhile, the FLASH type FPGA does not need an additional PROM, and the power-on time is very short. The control module mainly completes the functions of system reconstruction, remote control and telemetry control instruction distribution, reception and distribution of PPS and other signals, acquisition and reporting of single board state information, system power-on timing control, and the like. Meanwhile, the control module completes the loading and timing refreshing of the interface module program.

[0021] The 5G baseband chip is used for bottom layer baseband protocol processing and software algorithm. The 5G baseband chip selects PC802 of Bicochi Company, which is mainly responsible for bottom layer baseband protocol processing and implementation of software algorithm. In order to eliminate the error code influence caused by single event upset and possible signal upset of the storage device in the space environment, 3 / 4 firmware is saved for PC802 in the memory of S5000C. If PC802 detects firmware check error, PC802 sends a firmware update request to S5000C. After S5000C judges the correctness of the firmware from 3 / 2 firmware, S5000C sends the updated firmware to PC802 for firmware updating. Through the above means, the reliability of PC802 running in the space environment can be ensured.

[0022] The output end of the 5G baseband chip is bidirectionally electrically connected with the interface module. The interface module is used for hardware acceleration in baseband protocol processing, realizes encryption / decryption and interface conversion, and selects an SRAM type FPGA. The interface module mainly completes hardware acceleration in baseband protocol processing, realizes special functions such as encryption / decryption or interface conversion, and the like. The bit file of the SRAM type FPGA is loaded and timing refreshed on the NOR FLASH externally connected to the control module through the SelectMap. Since the utility model is mainly applied to the on-board satellite, the error code influence caused by single event upset and possible signal upset of the storage device in the space environment is considered in the hardware design. The program files are respectively stored in three different hardware positions of the FLASH. The probability of abnormality occurring in the three hardware positions at the same time and in the same position is extremely low. In the software design, a serial three module is additionally made at each hardware position to ensure the correctness of the program file data of each hardware position. After twice three module redundant data processing, the probability of abnormality of the data is close to 0.

[0023] The output end of the interface module is bidirectionally electrically connected with the optical module, and the optical module is used for front transmission interface processing and completes photoelectric signal conversion.

[0024] The power module is used for overall power supply for the base station baseband processing unit, and separately supplies power for the central processor, the control module, the 5G baseband chip, the interface module and the like.

[0025] The clock module is used for providing system clock and service clock for the base station baseband processing unit.

[0026] The output end of the control module is bidirectionally electrically connected with the integrated electronic component and the autonomous control component.

[0027] The device selection of the base station baseband processing unit of the utility model is all industrial-grade devices, which can provide a suitable operating environment for the software of the satellite base station, support high-speed processing of multi-beam wireless signals of the satellite base station, provide abundant signal processing resources, and meet the design requirements of low power consumption, light weight and low cost.

[0028] The above-mentioned embodiments are only preferred embodiments of the utility model, and cannot be used to limit the scope of the utility model, therefore, the modification, equivalent change, improvement and the like made according to the patent range of the utility model still belong to the range covered by the utility model.

Claims

1. An industrial grade device based high performance base station baseband processing unit on board a satellite, characterized by: The base station baseband processing unit comprises a management and control module, a 5G baseband chip, an interface module, a power module and a clock module which are bidirectionally electrically connected with a central processor, the central processor is used for high-layer baseband protocol and control signaling transceiving processing; The management and control module is used for receiving satellite-borne commands and module state monitoring, state reporting and internal power-on timing control of the base station baseband processing unit; The 5G baseband chip is used for bottom-layer baseband protocol processing and software algorithm; An output end of the 5G baseband chip is bidirectionally electrically connected with the interface module; the interface module is used for hardware acceleration in baseband protocol processing, realizes encryption / decryption and interface conversion; an output end of the interface module is bidirectionally electrically connected with an optical module, the optical module is used for front transmission interface processing and completes photoelectric signal conversion function; the power module is used for overall power supply of the base station baseband processing unit; the clock module is used for providing system clock and service clock for the base station baseband processing unit.

2. The high performance base station baseband processing unit based on industrial grade devices for satellite onboard use according to claim 1, characterized in that: Output ends of the optical module are respectively bidirectionally electrically connected with S / C antennas, a routing exchange assembly and Ka antennas.

3. The high performance base station baseband processing unit on board of satellite based on industrial grade devices according to claim 2, characterized in that: An output end of the management and control module is bidirectionally electrically connected with a comprehensive electronic assembly and an autonomous management and control assembly.

4. The high performance base station baseband processing unit on board of satellite based on industrial grade devices according to claim 3, characterized in that: The central processor is a Feiteng cloud S5000C high-performance general-purpose microprocessor.

5. The high performance base station baseband processing unit on board of satellite based on industrial grade devices according to claim 3, characterized in that: The 5G baseband chip is a PC802 chip of Bicochi Company.

6. The high performance base station baseband processing unit based on industrial grade components for satellite onboard use according to claim 4 or 5, characterized in that: The management and control module is a FLASH type FPGA, and the interface module is an SRAM type FPGA.

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