CN115038136B - Multi-channel self-adaptive bandwidth switching method and system - Google Patents
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
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Abstract
The invention relates to a multichannel self-adaptive bandwidth switching method and a system, wherein the method firstly sets a channel stability time limit and a data transmission channel upper limit based on a plurality of physical channels of a physical link; then detecting the current state of each physical channel, confirming the state of each physical channel according to the state of the physical channel and the stable time limit, judging whether a thermal redundancy channel exists according to the number of real-time fault-free channels and the upper limit of a data transmission channel when detecting that the confirmation state of any channel in a link is changed, and if the thermal redundancy channel exists, distributing the thermal redundancy channel and an active channel; and if the hot redundant channel does not exist, the active channel is allocated, so that the bandwidth switching is realized. The system comprises: the system comprises a signal sending module, a physical channel cluster, a link state detection cluster and a thermal redundancy control module; the physical channel cluster comprises a plurality of physical channels, and the link state detection cluster comprises a plurality of link state detection modules, wherein each physical channel corresponds to a single link state detection module.
Description
Technical Field
The invention belongs to the technical field of high-speed data transmission of spacecrafts, and particularly relates to a multichannel self-adaptive bandwidth switching method and system.
Background
With the increase of the difficulty of space exploration tasks, high-resolution payloads are required to be equipped inside the spacecraft, and the information exchange quantity and exchange rate between payloads also increase. The existing bus technology cannot support ultra-high-speed satellite-borne data network, so the European aerospace agency proposes a new generation of ultra-high-speed serial link SpaceFoibe technology to meet the new requirements of data exchange between payloads.
An important feature of the spacefibe technology is the support of multi-channel functionality, i.e. a single physical link contains multiple physical channels. The multichannel function not only can effectively expand the data transmission bandwidth, but also provides a guarantee for the safety of data transmission so as to ensure that the SpaceFobore technology can be applied to occasions with higher reliability requirements. The multi-channel function may provide hot redundancy switching services when one or more physical channels on one physical link fail due to cable failure or the like. The hot redundancy switching service is to realize that a hot redundancy channel automatically takes over a fault channel under the condition of no shutdown, so that data receiving and transmitting are continuously completed within a specified time. When there are no hot redundant channels, the multi-channel function may provide degraded handover services. Downgrade switch service refers to automatically distributing data to the remaining active channels to complete the transmission of the data. An active channel refers to a physical channel used to transmit valid data information during communication.
The key of the hot redundancy switching service and the degradation switching service is switching management, and a switching structure plays a crucial role in ordered and stable operation of the whole transmission system. The prior art only describes the working principles of the spacefibe protocol hot redundancy switching service and the degradation switching service, and does not describe a specific switching management implementation mode.
Disclosure of Invention
The invention provides a multichannel self-adaptive bandwidth switching method and a system, and provides an implementation framework of a SpaceFobore protocol multichannel hot redundancy switching service and a degradation switching service.
The invention provides a multichannel self-adaptive bandwidth switching method, which is characterized in that firstly, a channel stability time limit and a data transmission channel upper limit are set on the basis of a plurality of physical channels of a physical link; then detecting the current state of each physical channel in real time, confirming the state of each physical channel according to the state of the physical channel and the stability time limit, detecting the confirmation states of all the physical channels, judging whether a thermal redundancy channel exists according to the number of real-time fault-free channels and the upper limit of a data transmission channel when detecting that the confirmation state of any channel in a link changes, and if the thermal redundancy channel exists, distributing the thermal redundancy channel and an active channel; and if the hot redundant channel does not exist, the active channel is allocated, so that the bandwidth switching of the multiple channels is realized.
As one of the improvement of the technical scheme, when the method confirms the state of a certain physical channel, the accumulated effective time of the state of the physical channel is required to reach a stable time limit, so that the confirmation state of the physical channel is obtained, and a link state confirmation signal is formed after all the physical channel states are confirmed.
As one of the improvements of the above technical solution, the method detects the acknowledgement status of all channels in the link, and if the acknowledgement status of all channels in the link is unchanged, it indicates that bandwidth switching is not required; if the confirmation state of any channel in the link is changed, the real-time non-fault physical channel number is further compared with the upper limit of the data transmission channel, and if the real-time non-fault physical channel number does not exceed the upper limit of the data transmission channel, the fact that a thermal redundancy channel does not exist is indicated; and if the number of the real-time fault-free physical channels is greater than the upper limit of the data transmission channel, indicating that a hot redundant channel exists.
As one of the improvements of the above technical solutions, the method numbers the physical channels of the link from 0 to n-1, n being the number of physical channels, and specifies according to the spacefibe protocol: when the hot redundant channel exists, the fault-free physical channel with smaller number is used as an active channel, and the rest fault-free physical channels are used as hot redundant channels. Therefore, when allocating the hot redundant channel and the active channel, starting from the least significant bit (the significant bit is a bit which is 1 after being converted into binary), the physical channel corresponding to the common l bit significant bit is used as the active channel and the corresponding l bit of the active channel signal is 1, the remaining n-l bit of the active channel signal is 0, the physical channel corresponding to the remaining high significant bit of the link state acknowledgement signal is used as the hot redundant channel and the corresponding m-l bit of the hot redundant channel signal is 1, and the remaining bits of the hot redundant channel signal are all 0. When the active channel is allocated, the physical channel corresponding to the effective bit in the link state confirmation signal is directly used as the active channel to be juxtaposed with the corresponding m bits of the active channel signal to be 1, and the remaining n-m bits of the active channel signal are 0; the hot redundant channel signal n bits are all 0.l is the upper limit of the data transmission channel, and m is the number of real-time fault-free channels.
The invention also proposes a multi-channel adaptive bandwidth switching system for implementing one of the above methods, said system comprising: the system comprises a signal sending module, a physical channel cluster, a link state detection cluster and a thermal redundancy control module;
the signal sending module is used for sending a stable time limit signal to the link state detection cluster and sending a data sending channel upper limit signal to the thermal redundancy control module; a stable time limit is set in the stable time limit signal; the data transmission channel upper limit signal is provided with a data transmission channel upper limit;
the physical channel cluster comprises n physical channels, n=2 k (k is N) and is numbered 0 to N-1, and is used for detecting the state of the physical channel to obtain a physical channel state signal and passing the physical channelThe channel state signal is transmitted to the link state detection cluster;
the link state detection cluster comprises n link state detection modules, and each physical channel corresponds to a single link state detection module; the link state detection module confirms the state of each physical channel according to the stable time limit signal and the physical channel state signal and then sends a link state confirmation signal to the hot redundancy control module;
the hot redundancy control module outputs an n-bit active channel signal, an n-bit hot redundancy channel signal and a k+1-bit active channel number signal according to the data transmission channel upper limit signal and the link state acknowledgement signal so as to allocate the hot redundancy channel and the active channel or allocate the active channel. Each bit in the active channel signal and the hot redundant channel signal corresponds to a correspondingly numbered physical channel. When a bit in the active channel signal is a valid bit, it indicates that the physical channel corresponding to the valid bit is an active channel. When a certain bit in the hot redundant channel signal is a valid bit, the physical channel corresponding to the valid bit is indicated to be the hot redundant channel.
As an improvement of the above technical solution, the link state detection cluster further includes a selector 0, a selector 1, and a counter;
the selector 0 takes the physical channel state as a gating signal to generate a counter enabling signal and a counter zero clearing signal: when the state of the physical channel is 1, setting a counter enabling signal, and canceling setting of a counter zero clearing signal; when the state of the physical channel is 0, the counter enabling signal is cleared, and the counter clearing signal is set;
the counter zero clearing signal and the counter enabling signal are transmitted to the counter for time accumulation: when the counter zero clearing signal is set, the counter value returns to zero; when the counter enabling signal is in a high level and the time accumulated value does not reach the stable time limit, the counter value is continuously increased; when the counter enables the signal and the time accumulated value is increased to the stable time limit, the counter is kept unchanged;
the link state detection module compares the time accumulated value with the stable time limit in real time, and generates a gating signal of the selector 1 when the time accumulated value reaches the stable time limit; the selector 1 receives the strobe signal, generates a physical channel state confirmation signal and transmits the physical channel state confirmation signal to the thermal redundancy control module.
The invention provides a hardware architecture of a self-adaptive bandwidth switching system, which solves the problem of switching fault channels;
the invention adopts a physical channel state confirmation process based on time accumulation and a low-complexity thermal redundancy control strategy.
The invention can realize the technical effects that:
1) Physical link changes can be detected in real time;
2) The self-adaptive adjustment of the bandwidth can be realized, and the failed physical channel is automatically switched without external intervention;
3) Not only the reduction of bandwidth but also the increase of bandwidth are supported;
4) The switching mode is simple and feasible, eliminates the hidden danger of switching physical channels introduced by complex control logic, and ensures the real-time, stable and reliable multichannel transmission system.
Drawings
FIG. 1 is a block diagram of a system architecture of the present invention;
FIG. 2 is a block diagram of a system link state detection module according to the present invention;
FIG. 3 is a flow chart of a method for switching hot redundant control modules of the system of the present invention.
Detailed Description
The technical scheme provided by the invention is further described below by combining with the embodiment.
Fig. 1 is a diagram illustrating an implementation structure of a multi-channel hot redundancy switching system. The multichannel hot redundancy switching system is divided into a signal sending module, a physical channel cluster, a link state detection cluster and a hot redundancy control module. Wherein the physical channel clusters collectively comprise n=2 k (k.epsilon.N) physical channels with a numbering sequence of 0 to N-1, respectively. The link state cluster includes n link state detection modules. The physical channel cluster and the link state detection cluster are in a full uniradial relation, namely each physical channel corresponds to a single link state detection module. State combination of n physical channelsThe resulting physical link state is passed to a link state detection cluster. And each link state detection module in the link state detection cluster confirms the current state of each physical channel according to the stable time limit signal and the physical channel state signal. The link state detection cluster transmits a link state acknowledgement signal to the hot redundancy control module. The hot redundancy control module outputs an n-bit active channel signal, an n-bit hot redundancy channel signal and a k+1-bit active channel number signal according to the data transmission channel upper limit signal and the link state acknowledgement signal. Each bit in the active channel signal and the hot redundancy signal corresponds to a correspondingly numbered physical channel. The stable time limit signal and the data transmission channel upper limit signal are configured by a user according to the actual application scene. The stable time limit signal determines the time and accuracy of the link state detection: the long stability time limit can influence the reaction speed of the link state detection, so that the link cannot respond to the link change in time; the accuracy of link state detection is affected by the fact that the link state is too short in stable implementation, and error detection is caused. Therefore, the speed and accuracy of link detection need to be comprehensively considered when the stable time limit signal is assigned. The upper limit signal of the data transmission channel determines the redundancy of the physical channel, and in general, the higher the redundancy, the higher the system stability. However, excessive redundancy may result in increased system cost and additional overhead for handoff management. Therefore, the upper limit signal of the data transmission channel is designed according to the characteristics of the system and the reliability requirement during application.
To prevent false detection, the link state detection module employs a physical channel state validation process based on time accumulation. Only when the cumulative effective time of the physical channel state signals reaches a certain value, the link state detection module can finish the confirmation processing operation and output the physical channel state confirmation signals. The n physical channel status acknowledgement signals together form a link status acknowledgement signal. The implementation structure of the link state detection module is shown in fig. 2. The externally input physical channel state is used as a gating signal of the selector 0 to generate a counter enabling signal and a counter zero clearing signal: when the state of the physical channel is 1, setting a counter enabling signal, and canceling setting of a counter zero clearing signal; when the state of the physical channel is 0, the counter enable signal is cleared and the counter clear signal is set. The counter clear signal and the counter enable signal are transmitted to the counter for time accumulation: when the counter zero clearing signal is set, the counter value returns to zero; when the counter enabling signal is in a high level and the time accumulated value does not reach the stable time limit, the counter continues to be increased; when the counter enables the signal and the time accumulated value is increased to the stable time limit, the counter remains unchanged. The link state detection module compares the time accumulated value with the stable time limit in real time, and generates the gating signal of the selector 1 when the time accumulated value reaches the stable time limit value. At this time, the selector 1 generates a physical channel state confirmation signal and transmits it to the thermal redundancy control module.
As shown in fig. 3, a flowchart of a thermal redundancy control module is provided, which is responsible for performing bandwidth switching according to a physical link status acknowledgement signal and a data transmission channel upper limit signal. The thermal redundancy control module receives the link acknowledgement signal from the link state detection cluster and performs a difference check with the previously registered acknowledgement signal to detect a channel state change. If the two are equal, the link state is unchanged, and the hot redundancy control enters the step of detecting the channel state change again. If the new received value of the link acknowledge signal is different from the registered value, it is indicated that the link state has changed. At this time, the thermal redundancy control module enters the step of detecting the thermal redundancy channel. Let the number of real-time fault-free channels be m (m.ltoreq.n). If l < m, indicating that a hot redundancy channel exists, and enabling a hot redundancy control module to enter a hot redundancy channel and active channel allocation step: according to the SpaceFobore protocol, when a hot redundant channel exists, the less numbered non-faulty physical channel is used as an active channel, and the remaining non-faulty physical channels are used as hot redundant channels. When the hot redundant channel and the active channel are allocated, the physical channel corresponding to the common l bits of the valid bit from the least significant bit in the link state confirmation signal is used as the active channel, the corresponding l bits of the active channel signal are 1, and the remaining n-l bits of the active channel signal are 0. And taking a physical channel corresponding to the residual high-efficient bit of the link state confirmation signal as a thermal redundancy channel, wherein the corresponding m-l bit of the thermal redundancy channel signal is 1, and the residual bits of the thermal redundancy channel signal are 0. If l is larger than or equal to m, the hot redundancy control module enters the step of distributing active channels, wherein the hot redundancy control module is used for indicating that a hot redundancy channel does not exist: taking a physical channel corresponding to a valid bit in the link state confirmation signal as an active channel, and juxtaposing corresponding m bits of an active channel signal, wherein the remaining n-m bits of the active channel signal are 0; the n bits of the near-end hot redundant channel signal are all 0. Consider the following case: n=5 (five physical channels in total), m=3 (two physical channels fail, and assuming that the numbers of failed physical channels are 0 and 3, the current states of the five physical channels are represented as 10110 in binary). Let l=2 (upper limit of data transmission channel is 2), the active channel signal is 00110 and the hot redundant channel signal is 10000. Let l=3 (upper limit of data transmission channel is 3), the active channel signal is 10110 and the hot redundant channel signal is 00000.
From the above detailed description of the invention, the switching mode provided by the invention is simple and feasible, eliminates the hidden danger of switching physical channels introduced by complex control logic, and ensures the real-time, stable and reliable multichannel transmission system.
Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present invention and are not limiting. Although the present invention has been described in detail with reference to the embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the present invention, which is intended to be covered by the appended claims.
Claims (3)
1. A multi-channel self-adaptive bandwidth switching method comprises the steps of firstly setting a channel stability time limit and a data transmission channel upper limit based on a plurality of physical channels of a physical link; then detecting the current state of each physical channel in real time, confirming the state of each physical channel according to the state of the physical channel and the stability time limit, detecting the confirmation states of all the physical channels, judging whether a thermal redundancy channel exists according to the number of real-time fault-free channels and the upper limit of a data transmission channel when detecting that the confirmation state of any channel in a link changes, and if the thermal redundancy channel exists, distributing the thermal redundancy channel and an active channel; if the hot redundant channel does not exist, an active channel is allocated, so that the bandwidth switching of multiple channels is realized;
when the method confirms the state of a certain physical channel, the accumulated effective time of the state of the physical channel is required to reach a stable time limit, and a link state confirmation signal is formed after all the states of the physical channel are confirmed;
the method detects the confirmation states of all channels in the link, and if the confirmation states of all channels in the link are unchanged, bandwidth switching is not needed; if the confirmation state of any channel in the link is changed, the real-time non-fault physical channel number is further compared with the upper limit of the data transmission channel, and if the real-time non-fault physical channel number does not exceed the upper limit of the data transmission channel, the fact that a thermal redundancy channel does not exist is indicated; if the number of the real-time fault-free physical channels is greater than the upper limit of the data transmission channel, the existence of a thermal redundancy channel is indicated;
the method comprises the steps that physical channels of a link are numbered 0 to n-1, n is the number of physical channels, when a thermal redundancy channel and an active channel are allocated, the physical channels corresponding to l bits of valid bits are used as active channels and are placed at corresponding l bits of an active channel signal from the lowest valid bit in a link state confirmation signal, the remaining n-l bits of the active channel signal are 0, the physical channels corresponding to the remaining high valid bits of the link state confirmation signal are used as the thermal redundancy channel and are placed at corresponding m-l bits of the thermal redundancy channel signal to be 1, and the remaining bits of the thermal redundancy channel signal are 0; when the active channel is allocated, the physical channel corresponding to the effective bit in the link state confirmation signal is directly used as the active channel to be juxtaposed with the corresponding m bits of the active channel signal to be 1, and the remaining n-m bits of the active channel signal are 0; the n bits of the hot redundant channel signal are all 0; l is the upper limit of the data transmission channel, and m is the number of real-time fault-free channels.
2. A multi-channel adaptive bandwidth switching system for implementing the method of claim 1, the system comprising: the system comprises a signal sending module, a physical channel cluster, a link state detection cluster and a thermal redundancy control module;
the signal sending module is used for sending a stable time limit signal to the link state detection cluster and sending a data sending channel upper limit signal to the thermal redundancy control module; a stable time limit is set in the stable time limit signal; the data transmission channel upper limit signal is provided with a data transmission channel upper limit;
the physical channel cluster comprises n physical channels, n=2 k K is N and numbered 0 to N-1, and is used for detecting the state of a physical channel to obtain a physical channel state signal, and transmitting the physical channel state signal to the link state detection cluster;
the link state detection cluster comprises n link state detection modules, and each physical channel corresponds to a single link state detection module; the link state detection module confirms the state of each physical channel according to the stable time limit signal and the physical channel state signal and then sends a link state confirmation signal to the hot redundancy control module;
the hot redundancy control module outputs an n-bit active channel signal, an n-bit hot redundancy channel signal and a k+1-bit active channel number signal according to the data transmission channel upper limit signal and the link state confirmation signal so as to allocate the hot redundancy channel and the active channel or allocate the active channel; each bit in the active channel signal and the hot redundant channel signal corresponds to a correspondingly numbered physical channel.
3. The multi-channel adaptive bandwidth switching system according to claim 2, wherein the link state detection cluster further comprises a selector 0, a selector 1, and a counter;
the selector 0 takes the physical channel state as a gating signal to generate a counter enabling signal and a counter zero clearing signal: when the state of the physical channel is 1, setting a counter enabling signal, and canceling setting of a counter zero clearing signal; when the state of the physical channel is 0, the counter enabling signal is cleared, and the counter clearing signal is set;
the counter zero clearing signal and the counter enabling signal are transmitted to the counter for time accumulation: when the counter zero clearing signal is set, the counter value returns to zero; when the counter enabling signal is in a high level and the time accumulated value does not reach the stable time limit, the counter value is continuously increased; when the counter enables the signal and the time accumulated value is increased to the stable time limit, the counter is kept unchanged;
the link state detection module compares the time accumulated value with the stable time limit in real time, and generates a gating signal of the selector 1 when the time accumulated value reaches the stable time limit; the selector 1 receives the strobe signal, generates a physical channel state confirmation signal and transmits the physical channel state confirmation signal to the thermal redundancy control module.
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Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006074614A1 (en) * | 2005-01-14 | 2006-07-20 | Huawei Technologies Co., Ltd. | The self recovery method and system as well as information transfer approach in optical channel shared protection |
| CN101281483A (en) * | 2008-05-12 | 2008-10-08 | 北京邮电大学 | Double-machine redundant tolerant system and redundant switching method thereof |
| CN101808011A (en) * | 2010-03-31 | 2010-08-18 | 许继集团有限公司 | Telemechanical channel automatic switching method |
| CN103779963A (en) * | 2013-12-18 | 2014-05-07 | 国网上海市电力公司 | Self-adaptive relay protection multi-communication mode intelligent switching apparatus |
| CN104780064A (en) * | 2015-03-31 | 2015-07-15 | 北京航天发射技术研究所 | Fault detection method of dual-redundancy-channel hot-switching CAN bus |
| CN106209328A (en) * | 2016-07-12 | 2016-12-07 | 邦彦技术股份有限公司 | Intelligent redundant backup method and system for channel |
| RU2634189C1 (en) * | 2016-12-09 | 2017-10-24 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" | Multi-channel self-diagnosed computer system with reserve substitution and method of improving its fault-tolerance (versions) |
| CN108964984A (en) * | 2018-06-13 | 2018-12-07 | 南京南瑞继保电气有限公司 | A kind of redundant channel seamless handover method of electric system boss station communication |
| CN110808908A (en) * | 2019-09-27 | 2020-02-18 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | System and method for switching redundant network in real time across platforms |
| CN111969839A (en) * | 2020-08-03 | 2020-11-20 | 华中科技大学 | Multichannel linear adjustable power supply based on coding addressing and control method |
| CN112423352A (en) * | 2020-11-09 | 2021-02-26 | 上海卫星工程研究所 | Inter-satellite link control method for multi-channel and rate autonomous switching |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6009106A (en) * | 1997-11-19 | 1999-12-28 | Digi International, Inc. | Dynamic bandwidth allocation within a communications channel |
| US7567620B2 (en) * | 2004-06-30 | 2009-07-28 | Texas Instruments Incorporated | Data transmission scheme using channel group and DOCSIS implementation thereof |
| US7787377B2 (en) * | 2006-02-03 | 2010-08-31 | Telefonaktiebolaget Lm Ericsson (Publ) | Selective redundancy for Voice over Internet transmissions |
| US8861952B2 (en) * | 2007-02-28 | 2014-10-14 | Finisar Corporation | Redundancy and interoperability in multi-channel optoelectronic devices |
| CN102118300B (en) * | 2009-12-31 | 2014-03-12 | 华为软件技术有限公司 | Method and device for transmitting data streams in multiple channels |
| CN101908974B (en) * | 2010-07-16 | 2012-05-23 | 北京航天发射技术研究所 | Heat switching system and heat switching method of dual-redundant CAN bus |
| US20130051220A1 (en) * | 2011-08-22 | 2013-02-28 | Igor Ryshakov | Method and Apparatus for Quick-Switch Fault Tolerant Backup Channel |
| US9852096B2 (en) * | 2014-03-25 | 2017-12-26 | Hewlett Packard Enterprise Development Lp | High speed serial link in-band lane fail over for RAS and power management |
| CN105790902B (en) * | 2014-12-22 | 2020-06-09 | 研祥智能科技股份有限公司 | Method and system for realizing redundant network card switching |
| EP3412009B1 (en) * | 2016-02-01 | 2020-08-26 | Star-Dundee Limited | Multi-lane communication |
| CN106789345B (en) * | 2017-01-20 | 2019-07-23 | 厦门集微科技有限公司 | Passageway switching method and device |
| CN107395400A (en) * | 2017-06-29 | 2017-11-24 | 天津大学 | The adaptive Dual-Ethernet redundance communicating method of space flight Ethernet time triggered |
| CN108306690A (en) * | 2018-01-11 | 2018-07-20 | 青岛海信宽带多媒体技术有限公司 | Optical module and passageway switching method |
| CN108965123B (en) * | 2018-07-24 | 2021-01-22 | 京东方科技集团股份有限公司 | Link switching method and network communication system |
| CN109547338B (en) * | 2018-12-06 | 2021-03-05 | 中国航空工业集团公司洛阳电光设备研究所 | Time-triggered network reconstruction method based on virtual channel |
| CN110380916B (en) * | 2019-08-26 | 2022-05-27 | 上海航天测控通信研究所 | Self-adaptive switching Ethernet cross redundancy backup system and method |
| CN112034774B (en) * | 2020-07-20 | 2024-03-19 | 中国船舶重工集团公司第七一五研究所 | Thermal redundancy control method |
| CN112929119B (en) * | 2021-02-04 | 2021-10-01 | 烽火通信科技股份有限公司 | Distributed system link switching method, device, equipment and storage medium |
| CN115001896B (en) * | 2022-06-28 | 2024-01-19 | 中国人民解放军海军工程大学 | Self-adaptive switching method for redundant channels |
-
2022
- 2022-05-25 CN CN202210575994.4A patent/CN115038136B/en active Active
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2006074614A1 (en) * | 2005-01-14 | 2006-07-20 | Huawei Technologies Co., Ltd. | The self recovery method and system as well as information transfer approach in optical channel shared protection |
| CN101281483A (en) * | 2008-05-12 | 2008-10-08 | 北京邮电大学 | Double-machine redundant tolerant system and redundant switching method thereof |
| CN101808011A (en) * | 2010-03-31 | 2010-08-18 | 许继集团有限公司 | Telemechanical channel automatic switching method |
| CN103779963A (en) * | 2013-12-18 | 2014-05-07 | 国网上海市电力公司 | Self-adaptive relay protection multi-communication mode intelligent switching apparatus |
| CN104780064A (en) * | 2015-03-31 | 2015-07-15 | 北京航天发射技术研究所 | Fault detection method of dual-redundancy-channel hot-switching CAN bus |
| CN106209328A (en) * | 2016-07-12 | 2016-12-07 | 邦彦技术股份有限公司 | Intelligent redundant backup method and system for channel |
| RU2634189C1 (en) * | 2016-12-09 | 2017-10-24 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" | Multi-channel self-diagnosed computer system with reserve substitution and method of improving its fault-tolerance (versions) |
| CN108964984A (en) * | 2018-06-13 | 2018-12-07 | 南京南瑞继保电气有限公司 | A kind of redundant channel seamless handover method of electric system boss station communication |
| CN110808908A (en) * | 2019-09-27 | 2020-02-18 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | System and method for switching redundant network in real time across platforms |
| CN111969839A (en) * | 2020-08-03 | 2020-11-20 | 华中科技大学 | Multichannel linear adjustable power supply based on coding addressing and control method |
| CN112423352A (en) * | 2020-11-09 | 2021-02-26 | 上海卫星工程研究所 | Inter-satellite link control method for multi-channel and rate autonomous switching |
Non-Patent Citations (10)
| Title |
|---|
| Chris McClements ; David McLaren.SpaceFibre network and routing switch.2017 IEEE Aerospace Conference.2017,全文. * |
| Prakash Chauhan ; Sanjib Kr. Deka ; Nityananda Sarma.Efficient proactive channel switching in cognitive radio networks.2017 Conference on Information and Communication Technology (CICT).2018,全文. * |
| SpaceFibre协议研究与路由器的实现;赵允齐;中国优秀硕士学位论文全文数据库;20210615;全文 * |
| SpaceWire冗余网络故障检测恢复技术实现;曾华菘;张春熹;伊小素;陶聪凌;刘文莉;;计算机测量与控制;20160825(第08期);全文 * |
| SpaceWire高速总线节点控制器的设计与实现;柳萌;安军社;史毅龙;江源源;姜文奇;电子技术应用;20181106;第44卷(第11期);全文 * |
| Steve Parkes ; Albert Ferrer Florit ; Alberto Gonzalez Villafranca * |
| Steve Parkes ; Chris McClements ; David McLaren ; Albert Ferrer Florit ; Alberto Gonzalez Villafranca.SpaceFibre networks: SpaceFibre, long paper.2016 International SpaceWire Conference (SpaceWire).2016,全文. * |
| Sukhen Shil Computer Science and Engineering, Tezpur University, Tezpur, India * |
| 数据专线上网热备冗余技术的应用研究;周伟;;微型电脑应用;20170520(第05期);全文 * |
| 网络冗余系统中精确时钟同步方法;章涵冯;冬芹;褚健;仪器仪表学报;20080815(第08期);全文 * |
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