Main/standby switching device, method and single plate
An active-standby switching, single-board technology, applied in digital transmission systems, electrical components, error prevention, etc., can solve the problem that the backplane cannot provide a sufficient number of bus ports, and achieve the effect of low cost
Inactive Publication Date: 2011-01-19
ZTE CORP
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Problems solved by technology
[0012] Of course, the above problems do not only exist in the ATCA platform architecture, but also in other platform architectures whose backplanes cannot provide a sufficient number of bus ports for active and standby use.
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[0050] The present invention provides a solution for the platform where the backplane cannot provide a sufficient number of bus ports available for active and standby use. After the parallel active / standby signals in the lower part are converted into serial signals, the serial signals are transmitted to the opposite end through the bus on the backplane that can be used for active / standby signal transmission, and then serial-to-parallel converted and then sent to the corresponding motherboard and its sub-boards. card to realize the switching function.
[0051] The motherboard mentioned above is the circuit part of the single board loaded with the sub-card, but it does not include the sub-card arranged on the single board.
[0052] In the embodiment of the present invention, the ATCA platform is taken as an example for illustration, but it should be known that the method of the present invention is also applicable to other platforms with similar problems.
[0053] The main-stan...
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The invention discloses a device, a method and a single board for active-standby changeover, wherein, the active-standby device is used in a signal processing platform and comprises: a link-layer module, used for sampling active-standby signals which are then grouped into a first parallel data array to be output; a physical layer module, used for transforming the first parallel data array into a first serial data which is output to a first differential bus and used for transforming a second serial data received by a second differential bus into a second parallel data array to be transmitted to the link-layer module; the link-layer module is also used for resuming the active-standby signal of an opposite end single board from the second parallel data array, which is to be transmitted to the single board, or resuming the active-standby signals of a mother board and a daughter card of the opposite end single board, which are transmitted to the corresponding mother board and daughter cardon the single board. The invention can be used for completing the transmitting of the active-standby signals only by utilizing a pair of signal wires when a backplane can not provide enough bus portsfor the use of the active-standbys, thus realizing the changeover of the active-standbys and having the advantages of reliability and low cost, etc.
Description
technical field [0001] The invention relates to single-board redundancy backup technology, in particular to an active-standby switching device and method, and a single board. Background technique [0002] In the existing communication platform, in order to ensure the reliable operation of the system, it is necessary to carry out redundant backup of key boards in the system, such as the clock board, switching board, signaling board, etc. With the switchover mechanism, the standby board is automatically upgraded to the main board to realize the normal operation of the system. [0003] Considering the real-time nature of board switching, the current method of switching is usually to use hardware single-ended master-standby signal pair interconnection between the master and slave boards, and introduce the master-standby signals of the peer board into the board. Active / standby logic modules are used to implement active / standby switchover. [0004] like figure 1 As shown, seven...
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IPC IPC(8): H04L1/22H04B1/74
Inventor 谢宝国齐文宁潘腾熊先奎
Owner ZTE CORP