CN104243246B - A kind of FlexRay bus tests and optimization method and device based on ZigBee technology - Google Patents
A kind of FlexRay bus tests and optimization method and device based on ZigBee technology Download PDFInfo
- Publication number
- CN104243246B CN104243246B CN201410567882.XA CN201410567882A CN104243246B CN 104243246 B CN104243246 B CN 104243246B CN 201410567882 A CN201410567882 A CN 201410567882A CN 104243246 B CN104243246 B CN 104243246B
- Authority
- CN
- China
- Prior art keywords
- flexray
- node
- flexray bus
- bus
- error ratio
- 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.)
- Expired - Fee Related
Links
Abstract
The present invention relates to a kind of FlexRay bus tests based on ZigBee technology and optimization method and device, including PC, ZigBee module, FlexRay bus test nodes, FlexRay bus tests node includes ZigBee module, programmable clock chip, digital regulation resistance and MCU microprocessors；The present invention is by using ZigBee technology real-time detection and controlling FlexRay bus states, using programmable clock chip and digital regulation resistance, transmission frequency and matching impedance are adjusted, reduce bus Packet Error Ratio, improve bus transfer quality and reliability, improve bus transfer efficiency；The method and device can not only realize automatic assessment, test and the parameter optimization of FlexRay bus performances, and can also provide the optimum impedance reference value of each node, so as to improve the reliability of FlexRay bus data transfers.
Description
Technical field
The invention belongs to electronic technology testing field, be related to a kind of FlexRay bus tests based on ZigBee technology with
Optimization method and device.
Background technology
FlexRay is a kind of high-speed serial communication, the time-triggered network agreement for being capable of compatible event triggering.Using
The network that FlexRay agreements are set up is mainly used in active air suspension system and some full electric braking systems of battle wagon
System.In such systems, the physical message of each suspension of FlexRay network collections automobile or wheel, then collects and gives suspension control
Electronic control unit (ECU) processed or brakes ECU, each suspension or wheel system are given after its analysis by FlexRay networks
Dynamic system sends control command.The operation of each each functional part of ECU node controls automobile in FlexRay networks, to lifting automobile
Operability, security and intellectuality it is significant.But, whole automobile industry lacks to FlexRay networks at present
The engineering experience of application, also lacks the ways and means to FlexRay network performance comprehensive assessments, causes FlexRay buses to exist
Still there is a problem of that Packet Error Ratio is higher in complex network.
At present, the short distance wire communication equipment such as USB is normally based on for the method for testing of FlexRay network-bus,
For the test of Practical Project middle and long distance complex network, then without feasibility.And existing method can only be to single
FlexRay device nodes carry out transmitting-receiving test, can not the whole FlexRay networks of full assessment performance indications.Therefore, now
In the urgent need to a kind of FlexRay network test equipments and appraisal procedure with universal adaptability.
The content of the invention
In view of this, it is an object of the invention to provide a kind of FlexRay bus tests based on ZigBee technology with it is excellent
Change method and device, by using ZigBee technology real-time detection and controlling FlexRay bus states, using programmable clock core
Piece and digital regulation resistance, adjust transmission frequency and matching impedance, reduce bus Packet Error Ratio, improve bus transfer quality and reliability
Degree, improves bus transfer efficiency.
An object of the present invention is to provide a kind of FlexRay bus tests and optimization method based on ZigBee technology,
The second object of the present invention is to provide a kind of FlexRay bus tests based on ZigBee technology with optimization device.
An object of the present invention is achieved through the following technical solutions：
A kind of FlexRay bus tests and optimization method based on ZigBee technology that the present invention is provided, the method include
Following steps：
S1：ZigBee wireless networks are set up, PC sends FlexRay bus network configuration parameter to FlexRay buses and surveys
Examination node；
S2：FlexRay bus tests node sends the static state of immobilized substance to other FlexRay bus test nodes timesharing
Frame data bag, FlexRay bus test node statistics Packet Error Ratio information, and send this information to PC；
S3：The overall Packet Error Ratio of PC computing system and the local Packet Error Ratio of each several part, Packet Error Ratio is most in judging system
Big node, to this node send configuration information, makes it carry out impedance matching adjustment, counts and return Packet Error Ratio, PC again
Packet Error Ratio according to passback sends matching impedance regulating command again；
S4：PC resets MC9S12XF512M with minimum sandards difference method selection best match impedance, makes FlexRay
Network is operated under new communication frequency, then repeatedly said process；
S5：PC counts FlexRay bus network Packet Error Ratio and optimum impedance matching value at each frequency.
Further, the FlexRay network configuration parameters that PC sends in the S1 include setting FlexRay bus test sections
The minimum FlexRay bus communication frequencies of point.
Further, FlexRay bus tests node is total to other FlexRay using TMDA time division multiple access methods in the S2
The timesharing of line test node sends the static frames packet of immobilized substance, comprises the following steps：
S21：Data transmission time piece is determined by below equation：
(j+k·Tj) %T,
Wherein, % is complementation symbol, k=0,1,2,3 ..., T-1, if FlexRay number of bus nodes (m<64), always
Cycle numbers are T=64, if the ID and slot that are received based on i-th node are i, communication cycle is Ti=5ms, other nodes
Numbering is j (j ≠ i, 1≤j<M), correspondence ID and slot is j, and communication cycle is Tj=(m-1) Ti, set FlexRay buses
It is single channel communications pattern, communication port is A channel；
S22：By node serial number order from small to large, make each node respectively as main receiving node i, remaining node is made
It is sending node j (j ≠ i, 1≤j<M), timesharing sends the static frame data that data length is 32 bytes to the timing of main receiving node
Bag；
S23：Total Packet Error Ratio F_rate of i-th node is determined by below equation：
Wherein R_num is the packet being properly received, TiIt is communication cycle；
Packet Error Ratio F between two node communication nodes of i-th, jij_ rate is determined by below equation：
Wherein Rj_ num is the packet of the j nodes being properly received, and m is FlexRay number of bus nodes, TiIt is communication cycle,
The statistics of the Packet Error Ratio for itself being communicated with each node and total Packet Error Ratio is passed to PC by the i-th node by ZigBee module
Machine；
S24：The data communication channel for changing FlexRay buses is channel B, repeat step S22, S23；
S25：Main receiving point i is reset, repeat the above steps S21~S24, until m nodes are used as main receiving node
Complete the statistics of the FlexRay bus communication bit error rates.
Further, S4 is jumped to after knot adjustment impedance matching numerical value 50 times in the S3.
Further, the PC selects unified matching impedance to comprise the following steps by minimum sandards difference method：
S41：The minimum matching impedance of preceding 20 groups of Packet Error Ratio of selection A channel and channel B, its Packet Error Ratio is from small to large successively
It is FA0_rate,FA1_rate,…,FA19_ rate and FB0_rate,FB1_rate,…,FB19_ rate, its corresponding matching impedance
It is X to be worthA0,XA1,…,XA19And XB0,XB1,…,XB19；
S42：If there is XAi=XBj(i, j=0 ..., 19), then select XAiIt is optimum impedance matching value；If not existing,
Solve standard deviation criteria：
S43：According to ni,j=min [n0,0,n0,1,…,n19,19] select ni,jMinimum value, then the corresponding X of this minimum valueAi
Or XBjAs best match impedance of the FlexRay buses under the communication frequency.
Further, the communication frequency in the S4 is adjusted flexibly between 1~10MHz, when communication frequency is more than 10MHz,
Jump to S5.
The second object of the present invention is achieved through the following technical solutions：
A kind of FlexRay bus tests based on ZigBee technology that the present invention is provided and optimization device, including PC,
ZigBee module, FlexRay bus test nodes, when the FlexRay bus tests node includes ZigBee module, may be programmed
Clock chip, digital regulation resistance and MCU microprocessors；
The PC is connected with ZigBee module by serial ports；PC is by ZigBee module and FlexRay bus tests
Node sets up ZigBee wireless networkings, and PC sends the net of each node by ZigBee module to FlexRay bus test nodes
Network configuration parameter, each FlexRay bus tests node returns test result by ZigBee module to PC.
Further, the PC can send parameter configuration instruction from trend FlexRay node.
Further, the MCU microprocessors on described FlexRay bus test nodes in ZigBee chips can be according to finger
The output clock of order adjustment programmable clock chip, realizes flexible tune of the FlexRay bus communication frequencies from 1MHz to 10MHz
Section, respectively by the Packet Error Ratio F between the total Packet Error Ratio F_rate of the i-th node and the communication of each nodeijThe statistics of _ rate passes through
ZigBee module passes to PC.
It is of the invention to have the advantage that：Present invention reduces bus Packet Error Ratio, bus transfer quality and reliability are improved,
Bus transfer efficiency is improve, automatic assessment, test and the optimization of FlexRay bus performances is not only realized, and can also be given
Go out the optimum impedance reference value of each node, so as to improve the reliability of FlexRay bus data transfers.
Brief description of the drawings
In order that the object, technical solutions and advantages of the present invention are clearer, below in conjunction with accompanying drawing the present invention is made into
The detailed description of one step, wherein：
Fig. 1 is overall framework figure of the invention；
Fig. 2 is FlexRay bus test node circuit structures；
Fig. 3 is program flow diagram of the invention.
Specific embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail.
Fig. 1 is overall framework figure of the invention, and the FlexRay bus tests based on ZigBee technology include with optimization device
PC, ZigBee module, FlexRay bus test nodes.FlexRay bus tests node includes ZigBee module, may be programmed
Clock chip, digital regulation resistance and MCU microprocessors；In the present embodiment, FlexRay bus nodes 1, FlexRay bus sections
The FlexRay networks of point 2, FlexRay bus nodes n compositions, are tested the connection of FlexRay buses.
PC is connected with ZigBee module by serial ports；PC is by ZigBee module and FlexRay bus test nodes
ZigBee wireless networkings are set up, PC sends the network of each node by ZigBee module to FlexRay bus test nodes
Configuration parameter, each FlexRay bus tests node returns test result by ZigBee module to PC.
MCU microprocessors on FlexRay bus test nodes in ZigBee chips can be programmable according to instruction adjustment
The output clock of clock chip, realizes flexible modulation of the FlexRay bus communication frequencies from 1MHz to 10MHz, respectively by the i-th section
Packet Error Ratio F between the total Packet Error Ratio F_rate of point and the communication of each nodeijThe statistics of _ rate is transmitted by ZigBee module
To PC.
Fig. 2 is FlexRay bus test node circuit structures, and each node is a lower computer system, with FlexRay
As a example by bus test node 1, the node includes MC9S12XF512M, and ZigBee module is integrated small-sized in ZigBee module
MCU, programmable clock chip LMK03000, digital regulation resistance X9C102, bus transceiver TJA1080A；Master system is then wrapped
Master control PC is included, the ZigBee module being connected with PC.
In lower computer system, MC9S12XF512M is connected with ZigBee module by serial line interface, realizes each FlexRay
The data communication of node and master control PC；Integrated MCU and programmable clock chip LMK03000 passes through SPI in ZigBee module
Interface is communicated, and for configuring the communication frequency of FlexRay buses, and is connected with MC9S12XF512M, is reset
MC9S12XF512M, dynamic changes FlexRay bus configuration parameters；MC9S12XF512M and digital regulation resistance X9C102 passes through IO
Interface is communicated, for configuring the matching impedance of each FlexRay bus node.
In master system, master control PC is connected with ZigBee module；PC can send from trend FlexRay node joins
Number configuration-direct, while receiving the FlexRay bus network information that each FlexRay bus nodes are sent.
Fig. 3 is program flow diagram of the invention, and the FlexRay bus tests based on ZigBee technology include with optimization method
Following steps：S1：Electricity first in each several part module, it is established that complete ZigBee-network, ZigBee moulds are passed through by master control PC
Block sends FlexRay network configuration parameters to FlexRay bus test nodes, sets minimum FlexRay bus tests node
FlexRay bus communication frequencies；
S2：FlexRay bus tests node sends the static state of immobilized substance to other FlexRay bus test nodes timesharing
Frame data bag, FlexRay bus test node statistics Packet Error Ratio information, and PC is sent this information to, for example make FlexRay total
Line test node 1, FlexRay bus tests node 2, FlexRay bus test nodes n passes through bus transceiver respectively
TJA1080A distributes transmission sequentially according to the method for TMDA (time division multiple acess), and the static frame number of immobilized substance is sent to other timesharing
According to bag, comprise the following steps that：
S21：Data transmission time piece is determined by below equation：
(j+k·Tj) %T,
Wherein, % is complementation symbol, k=0,1,2,3 ..., T-1, if FlexRay number of bus nodes (m<64), always
Cycle numbers are T=64, if the ID and slot that are received based on i-th node are i, communication cycle is Ti=5ms, other nodes
Numbering is j (j ≠ i, 1≤j<M), correspondence ID and slot is j, and communication cycle is Tj=(m-1) Ti, set FlexRay buses
It is single channel communications pattern, communication port is A channel；
S22：By node serial number order from small to large, make each node respectively as main receiving node i, remaining node is made
It is sending node j (j ≠ i, 1≤j<M), timesharing sends the static frame data that data length is 32 bytes to the timing of main receiving node
Bag；
S23:Total Packet Error Ratio F_rate of i-th node is determined by below equation：
Wherein R_num is the packet being properly received, TiIt is communication cycle；
Packet Error Ratio F between two node communication nodes of i-th, jij_ rate is determined by below equation：
Wherein Rj_ num is the packet of the j nodes being properly received, and m is FlexRay number of bus nodes, TiIt is communication cycle,
The statistics of the Packet Error Ratio for itself being communicated with each node and total Packet Error Ratio is passed to PC by the i-th node by ZigBee module
Machine；
S24：The data communication channel for changing FlexRay buses is channel B, repeat step S22, S23；
S25：Main receiving point i is reset, repeat the above steps S21~S24, until m nodes are used as main receiving node
Complete the statistics of the FlexRay bus communication bit error rates.
S3：PC calculates the overall Packet Error Ratio of FlexRay bus network and the local Packet Error Ratio of each node, judges system
The maximum node of middle Packet Error Ratio, to this node send configuration information, makes it carry out impedance matching adjustment, counts and return mistake again
Bag rate, PC sends matching impedance regulating command again according to the Packet Error Ratio of passback, in the present embodiment, treats that node impedance is matched
After adjustment number of times reaches 50 times, S4 is jumped to；
S4：PC resets MC9S12XF512M with minimum sandards difference method selection best match impedance, makes FlexRay
Network is operated under new communication frequency, then repeatedly said process；Because two communication ports of FlexRay buses are same logical
Best match impedance under letter frequency is different, it is therefore desirable to select unified matching impedance by minimum sandards difference method, its step
Suddenly it is：
S41：The minimum matching impedance of preceding 20 groups of Packet Error Ratio of selection A channel and channel B, its Packet Error Ratio is from small to large successively
It is FA0_rate,FA1_rate,…,FA19_ rate and FB0_rate,FB1_rate,…,FB19_ rate, its corresponding matching impedance
It is X to be worthA0,XA1,…,XA19And XB0,XB1,…,XB19；
S42：If there is XAi=XBj(i, j=0 ..., 19), then select XAiIt is optimum impedance matching value；If not existing,
Solve standard deviation criteria：
S43：According to ni,j=min [n0,0,n0,1,…,n19,19] select ni,jMinimum value, then the corresponding X of this minimum valueAi
Or XBjAs best match impedance of the FlexRay buses under the communication frequency.
S5：PC counts FlexRay bus network Packet Error Ratio and optimum impedance matching value at each frequency.
After best match impedance is selected, small-sized MCU control programmable clock chips integrated in ZigBee module
LMK03000 improves output frequency, and resets MC9S12XF512M, FlexRay networks is operated under new communication frequency, so
Said process is repeated afterwards, and communication frequency can be adjusted flexibly between 1~10MHz.If add after communication frequency be not up to
10MHz, master control PC record FlexRay bus configuration parameters, and statistic record Packet Error Ratio data again, then impedance network is entered
Row adjustment, finds the best match impedance under the communication frequency.If communication frequency has reached 10MHz, then, master control PC
Machine disposal data, counts the best match impedance value under each different frequency.So far, a whole set of test system is just completed
The optimization of FlexRay bus configuration schemes.
Finally illustrate, preferred embodiment above is merely illustrative of the technical solution of the present invention and unrestricted, although logical
Cross above preferred embodiment to be described in detail the present invention, it is to be understood by those skilled in the art that can be
Various changes are made to it in form and in details, without departing from claims of the present invention limited range.
Claims (4)
1. a kind of FlexRay bus tests and optimization method based on ZigBee technology, it is characterised in that：Methods described include with
Lower step：
S1：ZigBee wireless networks are set up, PC sends FlexRay network configuration parameters to FlexRay bus test nodes；
S2：FlexRay bus tests node sends the static frame number of immobilized substance to other FlexRay bus test nodes timesharing
According to bag, FlexRay bus test node statistics Packet Error Ratio information, and send this information to PC；
S3：PC calculates the overall Packet Error Ratio of FlexRay bus network and the local Packet Error Ratio of each node, judges to be missed in system
The maximum node of bag rate, to this node send configuration information, makes it carry out impedance matching adjustment, counts and return bag by mistake again
Rate, PC sends matching impedance regulating command again according to the Packet Error Ratio of passback；
S4：PC selects the best match impedance of the node with minimum sandards difference method, and resets MC9S12XF512M, makes
FlexRay networks are operated under new communication frequency, then repeatedly said process；
S5：PC counts FlexRay bus network Packet Error Ratio and optimum impedance matching value at each frequency；
FlexRay bus tests node uses TMDA time division multiple access methods to other FlexRay bus test nodes in the S2
Timesharing sends the static frames packet of immobilized substance, comprises the following steps：
S21：Data transmission time piece is determined by below equation：(j+k·Tj) %T,
Wherein, % is complementation symbol, k=0,1,2,3 ..., T-1, if FlexRay number of bus nodes (m<64), total Cycle numbers
It is T=64, if the identity ID and slot that are received based on i-th node are i, communication cycle is Ti=5ms, other node serial numbers
It is j (j ≠ i, 1≤j ＜ m) that correspondence identity ID and slot are j, and communication cycle is Tj=(m-1) Ti, FlexRay is total for setting
Line is single channel communications pattern, and communication port is A channel；
S22：By node serial number order from small to large, make each node respectively as main receiving node i, remaining node is used as hair
Node j (j ≠ i, 1≤j ＜ m) is sent, timesharing sends the static frames packet that data length is 32 bytes to the timing of main receiving node；
S23：Total Packet Error Ratio F_rate of i-th node is determined by below equation：
Wherein R_num is the packet being properly received, TiIt is communication cycle；
Packet Error Ratio F between two node communication nodes of i-th, jij_ rate is determined by below equation：
Wherein Rj_ num is the packet of the j nodes being properly received, and m is FlexRay number of bus nodes, TiIt is communication cycle, i-th
The statistics of the Packet Error Ratio for itself being communicated with each node and total Packet Error Ratio is passed to PC by node by ZigBee module；
S24：The data communication channel for changing FlexRay buses is channel B, repeat step S22, S23；
S25：Main receiving point i is reset, repeat the above steps S21~S24, until m nodes are completed as main receiving node
The statistics of the FlexRay bus communication bit error rates；
The PC selects unified matching impedance to comprise the following steps by minimum sandards difference method：
S41：The matching impedance that A channel is minimum with preceding 20 groups of Packet Error Ratio of channel B is selected, its Packet Error Ratio is successively from small to large
FA0_rate,FA1_rate,…,FA19_ rate and FB0_rate,FB1_rate,…,FB19_ rate, its corresponding matching impedance value
It is XA0,XA1,…,XA19And XB0,XB1,…,XB19；
S42：If there is XAi=XBj(i, j=0 ..., 19), then select XAiIt is optimum impedance matching value；If not existing, solve
Standard deviation criteria：
S43：According to ni,j=min [n0,0,n0,1,…,n19,19] select ni,jMinimum value, then the corresponding X of this minimum valueAiOr XBj
As best match impedance of the FlexRay buses under the communication frequency.
2. a kind of FlexRay bus tests and optimization method based on ZigBee technology according to claim 1, its feature
It is：The FlexRay network configuration parameters that PC sends in the S1 include setting FlexRay bus test nodes
The minimum communication frequency of FlexRay buses.
3. a kind of FlexRay bus tests and optimization method based on ZigBee technology according to claim 1, its feature
It is：In the S3 after knot adjustment impedance matching numerical value 50 times, S4 is jumped to.
4. a kind of FlexRay bus tests and optimization method based on ZigBee technology according to claim 1, its feature
It is：Communication frequency in the S4 is adjusted flexibly between 1~10MHz, when communication frequency is more than 10MHz, jumps to S5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410567882.XA CN104243246B (en) | 2014-10-22 | 2014-10-22 | A kind of FlexRay bus tests and optimization method and device based on ZigBee technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410567882.XA CN104243246B (en) | 2014-10-22 | 2014-10-22 | A kind of FlexRay bus tests and optimization method and device based on ZigBee technology |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104243246A CN104243246A (en) | 2014-12-24 |
| CN104243246B true CN104243246B (en) | 2017-07-07 |
Family
ID=52230643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410567882.XA Expired - Fee Related CN104243246B (en) | 2014-10-22 | 2014-10-22 | A kind of FlexRay bus tests and optimization method and device based on ZigBee technology |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104243246B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106302061A (en) * | 2016-07-26 | 2017-01-04 | 北京润科通用技术有限公司 | A kind of communication means based on FlexRay bus, Apparatus and system |
| CN107356802B (en) * | 2017-07-03 | 2020-02-28 | 珠海格力电器股份有限公司 | Self-test circuit and circuit self-test method |
| CN109274564B (en) * | 2017-07-18 | 2020-11-20 | 比亚迪股份有限公司 | CAN bus network control method and CAN bus network |
| CN109710552B (en) * | 2018-12-29 | 2021-01-15 | 深圳市联影医疗数据服务有限公司 | Bus transmission quality evaluation method, system and computer storage medium |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103517293A (en) * | 2012-06-29 | 2014-01-15 | 华为技术有限公司 | Anti-interference method and equipment of ZigBee network |
-
2014
- 2014-10-22 CN CN201410567882.XA patent/CN104243246B/en not_active Expired - Fee Related
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103517293A (en) * | 2012-06-29 | 2014-01-15 | 华为技术有限公司 | Anti-interference method and equipment of ZigBee network |
Non-Patent Citations (2)
| Title |
|---|
| "基于CC2530的无线传感器网络网关节点的设计";陈克涛等，;《西北农林科技大学学报》;20140530;全文 * |
| 邢伟伟等，."ZigBee无线网关在MODBUS通信中的应用".《计算机工程与应用》.2011,全文. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104243246A (en) | 2014-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104243246B (en) | A kind of FlexRay bus tests and optimization method and device based on ZigBee technology | |
| CN100424605C (en) | Intelligent management apparatus and management method for distributed control network based on CAN bus | |
| CN104168582B (en) | A kind of microcell base station system, relevant device and data processing method | |
| CN109408424B (en) | PCIe interface-based SpaceFibre bus data acquisition method | |
| CN105591855A (en) | Force sensor data collection system and method based on EtherCAT | |
| CN103297282A (en) | Network delay measuring device and method | |
| CN102572911B (en) | A kind of LTE base band terminal simulation system based on PCI-E interface | |
| CN107889251A (en) | A kind of determination method, the network equipment and the terminal of time-domain resource unit set structure | |
| CN106162528A (en) | LoRa signal and Bluetooth signal modular converter, conversion method and sender unit | |
| CN103036821B (en) | For engaging method and the interface of radio-frequency (RF) transceiver and baseband processor | |
| CN106102168A (en) | The control method of a kind of data transmission and relevant device | |
| CN104519500A (en) | Automatic test system of throughput of wireless communication equipment and automatic test method of throughput | |
| WO2020035060A1 (en) | Data transmission method and apparatus, base station, terminal, and computer readable storage medium | |
| CN103685086A (en) | Baseband signal processor supporting multi-chip architecture and processing method of baseband signal processor | |
| WO2017031931A1 (en) | Device, board card and method for signal output | |
| CN106685782B (en) | Profibus active terminal resistance device with DP bus data acquisition function | |
| CN108667706B (en) | Ethernet serial server with dynamically adjustable serial number and data transmission method thereof | |
| CN110290187A (en) | Transmission method and device, storage medium, the electronic device of data information | |
| CN105979602A (en) | Control method for data transmission and related equipment | |
| CN105100000B (en) | Interface conversion device and network system | |
| CN105323030A (en) | Time delay compensation method and device | |
| CN107911288B (en) | Train communication network card and train control management system | |
| CN107306412A (en) | Method, user equipment and base station to realize message transmitting | |
| CN106793056B (en) | A kind of channel transmission signal alignment method and apparatus | |
| CN106130829B (en) | Bus test method and device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170707 Termination date: 20181022 |