CN113438046B - Management method and system for realizing multiplexing technology based on message slice - Google Patents
Management method and system for realizing multiplexing technology based on message slice Download PDFInfo
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Abstract
The invention relates to the technical field of communication information transmission, and provides a management method and a management system for realizing a multiplexing technology based on message slicing. The method comprises the steps of dividing the overhead into channel associated overhead and bypass overhead, wherein the channel associated overhead is embedded into a cell header, is forwarded along with the service and is used for monitoring the service forwarding behavior; the bypass overhead is used for channel container self management and/or container content management; the path-associated cost and the bypass cost are based on a synchronous mechanism, and the bypass cost is used for managing the multiplexed channel container and/or sub-channel container in real time. The invention can realize the effective management and maintenance of multiplexing under the condition of improving the payload bearing efficiency of the hard pipeline and reducing the complexity of equipment as much as possible by additionally arranging the bypass overhead and providing a corresponding synchronization mechanism.
Description
[ technical field ] A method for producing a semiconductor device
The invention relates to the technical field of communication information transmission, in particular to a management method and a management system for realizing a multiplexing technology based on message slicing.
[ background ] A method for producing a semiconductor device
In the bearer network deployment, an "end-to-end slice" is always a hot word. The "small particles" in "end-to-end slicing" is an important concept. The small particles are "hard pipes" capable of achieving an end-to-end Time-Division Multiplexing (TDM) like hard isolation effect based on ethernet technology. The speed is generally less than 1Gbps, and can reach 10Mbps or even lower. There are a number of techniques for implementing hard-pipe schemes, of which "message slice-based multiplexing" is a common technique. In the technology, original services are uniformly introduced into a sub-channel container, the sub-channel container is uniformly divided into equal-length data, multiple paths of data are gathered into a larger channel container, the container can be carried in a message, the message is called a cell, and the line side receives and transmits the message based on the cell, so that multiplexing based on message slicing is realized.
However, the multiplexing-based management techniques mostly employ the use of carrying maintenance and management information in the slicing overhead. There are mainly two implementations.
The implementation method 1 comprises the following steps: each cell overhead is opened with a fixed width field, and an overhead data channel is provided in a multi-frame form.
The implementation method 2 comprises the following steps: there is a separate "OAM cell" (all called: Operation Administration and Maintenance). This cell is completely overhead information.
However, based on the above two schemes, there are the following disadvantages:
1) for the bearing network, the economic value difference between the common packet processing link and the special hard pipeline link is huge. However, in the existing scheme, the overhead is forwarded along with the service, and the service bandwidth is occupied by the overhead, which causes the reduction of the bearing efficiency of the dedicated hard channel. There is no mechanism to take full advantage of the processing power of "cheap" lanes such as ordinary packet links by differentiating between different overheads.
2) The overhead carried information is limited, and especially, the small particle channel only has 10M bandwidth, so that the overhead is smaller, and the management function cannot be expanded at will.
3) In "implementation method 1", each cell needs to identify complex overhead information. Due to the 'multiframe' design, the specific overhead content can be analyzed after a plurality of cells are collected, and the complexity of equipment implementation is increased. Especially when the number of pipes is provided in the order of thousands, chip logic resources are consumed very much. This is because if the cell carries more complicated overhead, such as 32 bytes of service description information. These overheads are not carried completely in one cell, and need to be carried in multiple cells in "multiframe" form, and the receiving end needs to collect multiple cells and extract the overheads.
4) In "implementation method 2", the insertion of "OAM cells" introduces a slight jitter of the traffic. The larger the "OAM cell" is, the larger the introduced traffic delay and jitter are. Such delays and jitter are to be avoided as much as possible for delay sensitive networks.
In view of the above, overcoming the drawbacks of the prior art is an urgent problem in the art.
[ summary of the invention ]
Aiming at the defects in the prior art, the invention solves the technical problems that: how to realize effective management and maintenance of multiplexing under the conditions of improving the bearing efficiency of the payload of the hard pipeline and reducing the complexity of equipment as much as possible.
The invention adopts the following technical scheme:
in a first aspect, the invention provides a management method for realizing multiplexing technology based on message slicing, which divides the overhead into channel associated overhead and bypass overhead, wherein the channel associated overhead is embedded into a cell header, is forwarded along with a service and is used for monitoring the service forwarding behavior; the bypass overhead is used for channel container self management and/or container content management;
the path-associated cost and the bypass cost are based on a synchronous mechanism, and the bypass cost is used for managing the multiplexed channel container and/or sub-channel container in real time.
Preferably, the associated overhead includes a sequence number and/or a CRC, and if the associated overhead is incremented with respect to each cell in the same channel, the monitoring of the service forwarding behavior specifically includes:
cell reverse order detection, cell loss detection, cell error code detection, link quality monitoring, and channel associated detection.
Preferably, the method comprises:
the bypass overhead is transmitted by a FlexE oh overhead, a FlexE-CLIENT overhead and a small-particle tunnel which is separately configured; alternatively, the first and second electrodes may be,
the bypass overhead is transmitted over the normal packet link.
Preferably, the path associated overhead and the bypass overhead are based on a synchronization mechanism, and the bypass overhead is implemented to manage the multiplexed channel container and/or sub-channel container in real time, specifically including:
the associated cost and the bypass cost are respectively provided with an identification ID for carrying out the association of the associated cost and the bypass cost;
and the path associated cost and the bypass cost are respectively provided with a synchronous pattern SYN which is used for distinguishing a new cost from an old cost during the time slot configuration table changing period and matching the identification ID to complete the content matching between the path associated cost and the bypass cost.
Preferably, each node of the network includes a bypass module, a path following module and a forwarding module:
the associated module is used for completing insertion, extraction and verification of associated overhead, synchronizing with bypass overhead when the time slot configuration table is switched, and completing time slot adjustment of each service under the associated time slot configuration table in a matching way;
the bypass module is used for completing the receiving and sending processing of the bypass overhead and the insertion, the check and the exchange of the bypass overhead; the exchange of the bypass overheads is used for exchanging the subchannel overheads in the bypass modules in the nodes in the upstream and downstream directions;
and the forwarding module is used for realizing the multiplexing service forwarding according to the time slot mapping relation configured by the activated time slot configuration table.
Preferably, the network node comprises a sending node:
the forwarding module of the sending node realizes multiplexing of the multi-channel sub-channel service into a channel container according to the activated time slot configuration table, and the channel container cuts the service message into cells for sending;
a bypass module of a sending node receives data of a time slot configuration table so as to be matched with the channel associated cost in the cell data monitored by the channel associated module, and the monitoring of the channel container and the sub-channel container by the bypass cost is realized;
and the channel associated module of the sending node embeds channel associated overhead on each cell, wherein the channel associated overhead carries one or more items of overhead information in a channel marker ID, a sequence number, IS-OAM and a supervision instruction.
Preferably, the network node includes a relay node, and the relay node performs service crossing according to an activated timeslot configuration table of upstream and downstream:
a bypass module of the relay node terminates the channel overhead and the sub-channel overhead in the upstream bypass overhead; simultaneously sending bypass overheads downstream;
the sub-channel overhead data in the bypass overhead is exchanged from the upstream bypass overhead to the downstream bypass overhead and is continuously transmitted forward along with the sub-channel;
a path associated module of the relay node terminates the upstream path associated overhead and completes the management of the channel and the sub-channel by matching with the bypass overhead data;
and the channel associated module embeds channel associated overhead into downstream cells.
Preferably, the network node comprises a receiving node, and terminates the granule service according to the activated timeslot configuration table:
a bypass module of the receiving node terminates the channel overhead in the upstream bypass overhead;
and the associated module of the receiving node terminates the upstream associated overhead and completes the channel and sub-channel management by matching with the bypass overhead data.
Preferably, in a scenario including a sending node, one or more relay nodes, and a receiving node, the switching action of the timeslot configuration table in each node is performed between a first timeslot configuration table and a second timeslot configuration table managed and maintained by the node, and when the content related to the timeslot configuration table is switched from the timeslot configuration table CA to the timeslot configuration table CB, the method further includes:
at the time of T0, the service is normal, the configuration is normal, the bypass module, the associated module and the forwarding module adopt a time slot configuration table CA, and the corresponding synchronous pattern is marked as SA;
at the time of T1, all nodes start switching negotiation from the time slot configuration table CA to the time slot configuration table CB through a bypass module, and the corresponding synchronous pattern is marked as SB;
at the time of T2, through a channel associated module, all nodes start to activate a time slot configuration table CB through channel associated overhead; wherein, the channel associated overhead processing module immediately informs the forwarding module to activate the time slot configuration table CB after receiving the synchronous pattern SB from the upstream;
and the service is normal at the time of T3, the configuration is normal, and the bypass module, the associated module and the forwarding module adopt a time slot configuration table CB.
Preferably, at time T0, the method specifically includes:
the bypass overhead and the associated overhead of each node carry a synchronization pattern SA, the synchronization pattern is matched to obtain a corresponding synchronization pattern SA, and the configuration of the synchronization pattern indicates that a time slot configuration table CA is activated;
and the forwarding module of each node performs service transceiving and forwarding processing according to the indication of the associated module and the first time slot configuration table, wherein the content of the first time slot configuration table is a time slot configuration table CA.
Preferably, at time T1, the method specifically includes:
the sending node carries new overhead information in the bypass overhead, the new overhead information is a description time slot configuration table CB, and the bypass overhead carries a new associated overhead synchronization pattern SB;
the bypass management module in the sending node configures another second time slot configuration table of the forwarding module of the sending node through the synchronous channel, and the configuration content is a time slot configuration table CB;
after receiving a time slot configuration table CB carried in the bypass overhead of the sending node, a bypass module of the relay node configures a second time slot configuration table of a forwarding module of the relay node through a synchronous channel, wherein the configuration content is the time slot configuration table CB;
the bypass module of the relay node configures the synchronization pattern of the associated module through a synchronization channel, and the configuration content is as follows: if the synchronous pattern SB is identified, activating a second time slot configuration table of the forwarding module, wherein the content of the second time slot configuration table is the time slot configuration table CB;
after receiving the time slot configuration table CB carried in the bypass overhead of the sending node, the bypass module of the receiving node configures a second time slot configuration table of the forwarding module through a 'synchronous' channel, wherein the configuration content is the time slot configuration table CB;
the bypass module of the receiving node configures the synchronization pattern of the associated overhead module through the synchronization channel, and the configuration content is as follows: if the synchronous pattern SB is identified, activating a second time slot configuration table of the forwarding module;
a bypass module of the receiving node replies an acknowledgement message ACK to the sending node in the reverse direction;
and the forwarding module of the receiving node executes a first time slot configuration table for service transceiving and forwarding according to the indication of the associated overhead processing module, wherein the content of the first time slot configuration table is a time slot configuration table CA.
Preferably, at time T2, the method specifically includes:
the bypass module of the sending node receives the acknowledgement message ACK in the receiving direction and executes the activation action;
a bypass module of the sending node configures the synchronous pattern of the associated module through a synchronous channel, so that the associated overhead synchronous pattern is switched to the SB;
the channel associated module of the sending node immediately informs a forwarding module to activate a second time slot configuration table, and simultaneously, the sent overhead synchronization pattern in the channel associated overhead is switched to SB;
a forwarding module of the sending node executes a second time slot configuration table for service transceiving and transfer processing according to the indication of the associated overhead processing module, wherein the content of the second time slot configuration table is a time slot configuration table CB;
after receiving the synchronous pattern SB from the upstream, the channel associated module of the relay node immediately informs a forwarding module of the relay node to activate a second time slot configuration table;
a forwarding module of the relay node activates a second time slot configuration table according to the indication of the associated overhead processing module, and performs service transceiving and transfer processing according to the time slot configuration table 2, wherein the content of the second time slot configuration table is CB;
after a channel associated module of the receiving node receives a synchronous pattern SB from the upstream, immediately notifying a forwarding module to activate a second time slot configuration table;
and a forwarding module of the receiving node activates a second time slot configuration table 2 according to the indication of the associated overhead processing module, and the second performs service reception according to the time slot configuration table, wherein the content of the second time slot configuration table is CB.
In a second aspect, the present invention further provides a management system for implementing a multiplexing technique based on a packet slice, where the system includes a sending node, one or more relay nodes, and a receiving node, and when a timeslot configuration table is switched from CA to CB, the system specifically includes:
at the time of T0, the service is normal, the configuration is normal, the bypass module, the associated module and the forwarding module adopt a time slot configuration table CA, and the corresponding synchronous pattern is marked as SA;
at the time of T1, all nodes start switching negotiation from the time slot configuration table CA to the time slot configuration table CB through a bypass module, and the corresponding synchronous pattern is marked as SB;
at the time of T2, all nodes start to activate a time slot configuration table CB through a channel associated module and channel associated overhead; wherein, the channel associated overhead processing module immediately informs the forwarding module to activate the time slot configuration table CB after receiving the synchronous pattern SB from the upstream;
and the service is normal at the time of T3, the configuration is normal, and the bypass module, the associated module and the forwarding module adopt a time slot configuration table CB.
The invention can realize the effective management and maintenance of multiplexing under the condition of improving the payload bearing efficiency of the hard pipeline and reducing the complexity of equipment as much as possible by additionally arranging the bypass overhead and providing a corresponding synchronization mechanism.
[ description of the drawings ]
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a basic principle display of a multiplexing technique based on message slicing according to an embodiment of the present invention;
FIG. 2 is a diagram illustrating the location of associated overhead in a cell message according to an embodiment of the present invention;
fig. 3 is a schematic diagram of the contents of the associated overhead and the bypass overhead and the dependency relationship provided in the embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating an implementation of synchronization of the bypass overhead and associated overhead time slot configurations in an embodiment of the present invention;
FIG. 5 is a schematic diagram of a system implementation according to an embodiment of the present invention;
fig. 6 is a management method and a system for implementing multiplexing based on message slicing according to an embodiment of the present invention.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In addition, the technical features involved in the respective embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
Please refer to fig. 1, in which: HEAD denotes the cell header after channel slicing (and may not); OAM represents the channel overhead; s1 and S2 indicate channel slots for carrying sub-channel data. The figure is presented based on the basic principle of message slice multiplexing. Service a and service B are encapsulated into respective sub-channels. After the sub-channels are sliced, the multi-channel sub-channel slices are collected into one channel cell which is loaded, and one or more time slots are occupied.
Fig. 2 shows the specific organization mechanism of the channel cells and the location intention of the associated overhead in the cell message. The composition of service a as presented in fig. 1 is S-ETH-PDUA-T. Where "S" denotes the S code defined in the 8023 standard, indicating the start of an ethernet data frame; "ETH" denotes an Ethernet encapsulation header, typically source MAC, destination MAC, and ETYPE; "PDU A" represents the payload portion of service A; "T" denotes the T code defined in the 8023 standard, indicating the end of an ethernet data frame; the message format of service B is similar to service a and is not described again. The composition of the channel cell is: S-HEAD-associated overhead-S1-S2- … -T, wherein "associated overhead" represents the simplified overhead of following channel cell delivery as described in the present invention, and its internal specific definition can be seen in fig. 3.
Fig. 3 shows an implementation content and dependency relationship diagram of the associated overhead and the bypass overhead.
The overhead is divided into two types: an associated overhead and a bypass overhead.
Overhead associated with the path: for marking container objects and minimalist OAM. The extremely simple OAM design principle is as follows: without bypass overhead, the following management and maintenance capabilities are accomplished:
(a) detecting the reverse order of the cells;
(b) cell loss detection;
(c) detecting error codes of cell payload;
(d) the link quality is monitored through the cell loss time and the error code to trigger the protection switching;
(e) and the capability of realizing other channel associated detection functions by the forced insertion OAM is reserved.
Bypass overhead: for container self management and container content management. A flyby may be deployed or in some other overhead. For example, for a FlexE link, a small-particle tunnel may be configured separately through FlexE oh overhead and FlexE-CLIENT overhead to transmit bypass overhead or a common packet link, so as to avoid the co-workers occupying the service bandwidth to increase the utilization rate and also avoid causing service delay and jitter degradation.
As shown in fig. 3, the associated overhead includes the following:
1) tag ID
The tag ID represents a channel tag, which uniquely identifies tunnel information. In the invention, the synchronous channel between the associated overhead and the bypass overhead is associated through the tag ID.
2) Serial number
And each cell under the same channel is increased in size, and the monitoring function is used for monitoring the reverse order of the cells. By sequence number, the following capabilities are achieved:
(a) detecting the reverse order of the cells;
(b) cell loss detection;
(c) the link quality is monitored by the reverse order of the cells and the loss state, and the protection switching can be triggered when the quality exceeds a set threshold.
3) Pattern SYN
The SYN is a synchronization pattern used to synchronize with the management information of the bypass overhead.
This traffic matches the same path-associated overhead configuration as the present path SYN pattern (value), so in the specific implementation process, the bouquet SYN may be represented as a random number or an agreed synchronization parameter value.
4)IO
And identifying whether the time slot of the established cell offset contains OAM information or not, and expanding the detection capability of other channel-associated OAM.
5)CRC
And monitoring the CRC of the payload of the current cell for checking whether the payload is damaged in the transmission process. The following capabilities are achieved by CRC:
(a) detecting the error code of the cell;
(b) the quality of the link is monitored through error code detection, and protection switching can be triggered when the error code exceeds a configuration threshold.
6) Other associated overhead information.
The bypass overhead includes the following:
1) channel management
The channel management is used to identify channel maintenance information corresponding to the bypass overhead. These pieces of information include:
a) ID of the mark
For identifying the lane number corresponding to the bypass overhead. And the association of the channel service and the associated path overhead and the bypass overhead thereof is realized through the label ID.
b) Pattern SYN
The SYN is a synchronization pattern used to synchronize with the associated overhead and its corresponding traffic.
Since the bypass overhead and the actual traffic are not synchronized in real time and there is an adjustment due to the occupation of the traffic slots, it is necessary to match the actual expected traffic by SYN. During configuration synchronization, the receiver may need to be able to identify both the current bypass overhead and the upcoming effective bypass overhead configuration at the same time.
c) And other maintenance information for the channel.
2) Subchannel management-timeslot occupancy description
The segment information describes the relationship of the subchannel to the slot occupancy. Based on this piece of information, different sub-channel traffic in the channel can be correctly extracted. This information is configured into the slot configuration table of the forwarding module.
3) Sub-channel management-business object management
A bypass channel is provided, path overhead or service information of some services (such as some sampling data, Trace data and the like) can be extracted, and then information is transmitted in a forward direction, a reverse direction or self through the channel for monitoring and managing actual services. How to forward and backward transfer information is a common technique in the industry, and this patent will not be described.
Example 1:
the embodiment 1 of the invention provides a management method for realizing a multiplexing technology based on message slicing, which is characterized in that the overhead is divided into channel associated overhead and bypass overhead, the channel associated overhead is embedded into a cell header and is forwarded along with a service, and the channel associated overhead is used for monitoring the service forwarding behavior; the monitoring of the service forwarding behavior specifically includes: cell reverse order detection, cell loss detection, cell error code detection, link quality monitoring, and channel associated detection.
The bypass overhead is used for channel container self management and/or container content management; the path-associated overhead is used for marking a channel container object and overhead information with high real-time requirement, and the bypass overhead is also used for carrying other overhead with low real-time requirement.
The path-associated cost and the bypass cost are based on a synchronous mechanism, and the bypass cost is used for managing the multiplexed channel container and/or sub-channel container in real time.
In a specific implementation, the bypass overhead can be transmitted by FlexE oh overhead, FlexE-CLIENT overhead and separately configuring a small-particle tunnel; alternatively, the bypass overhead is transmitted over the normal packet link. Therefore, the situation that the colleagues occupying the service bandwidth and improving the utilization rate also avoid causing time delay and jitter degradation of the service is avoided.
The embodiment of the invention can realize effective management and maintenance of multiplexing under the conditions of improving the payload bearing efficiency of the hard pipeline and reducing the complexity of equipment as much as possible by additionally arranging the bypass overhead and providing a corresponding synchronization mechanism.
In the implementation process of the embodiment of the present invention, a specific implementation manner is provided for the implementation of real-time management of the bypass overhead on the multiplexed channel container and/or sub-channel container based on a synchronization mechanism for the associated overhead and the bypass overhead, and the implementation manner includes:
the associated cost and the bypass cost are respectively provided with an identification ID for carrying out the association of the associated cost and the bypass cost;
and the path associated overhead and the bypass overhead are respectively provided with a synchronous pattern SYN which is used for distinguishing the new overhead from the old overhead during the time slot configuration table changing period and matching the identification ID to complete the content matching between the path associated overhead and the bypass overhead.
In a scenario applicable to the embodiment of the present invention, each node of a network typically includes a bypass module, a path following module, and a forwarding module, specifically:
the associated module is used for completing insertion, extraction and verification of associated overhead, synchronizing with bypass overhead when the time slot configuration table is switched, and completing time slot adjustment of each service under the associated time slot configuration table in a matching way;
the bypass module is used for completing the receiving and sending processing of the bypass overhead and the insertion, the check and the exchange of the bypass overhead; the exchange of the bypass overheads is used for exchanging the subchannel overheads in the bypass modules in the nodes in the upstream and downstream directions;
and the forwarding module is used for realizing the multiplexing service forwarding according to the time slot mapping relation configured by the activated time slot configuration table.
Further, the network node comprises a sending node, and the method comprises:
the forwarding module of the sending node realizes multiplexing of the multi-channel sub-channel service into a channel container according to the activated time slot configuration table, and the channel container cuts the service message into cells for sending;
a bypass module of a sending node receives data of a time slot configuration table so as to be matched with the channel associated cost in the cell data monitored by the channel associated module, and the monitoring of the channel container and the sub-channel container by the bypass cost is realized;
and the channel associated module of the sending node embeds channel associated overhead on each cell, wherein the channel associated overhead carries one or more items of overhead information in a channel marker ID, a sequence number, IS-OAM and a supervision instruction.
If the network node comprises a relay node, the relay node performs service crossing according to an activated time slot configuration table of upstream and downstream, and the method comprises the following steps:
a bypass module of the relay node terminates the channel overhead and the sub-channel overhead in the upstream bypass overhead; simultaneously sending bypass overhead downstream;
the sub-channel overhead data in the bypass overhead is exchanged from the upstream bypass overhead to the downstream bypass overhead and is continuously transmitted forward along with the sub-channel;
a path associated module of the relay node terminates the upstream path associated overhead, and completes the management of the channel and the sub-channel by matching with the bypass overhead data;
and the channel associated module embeds channel associated overhead into downstream cells.
The network node comprises a receiving node, and terminates the small particle service according to the activated time slot configuration table, wherein the method comprises the following steps:
a bypass module of the receiving node terminates the channel overhead in the upstream bypass overhead;
and the associated module of the receiving node terminates the upstream associated overhead and completes the channel and sub-channel management by matching with the bypass overhead data.
In the above implementation scenario listed in the embodiment of the present invention, in a scenario including a sending node, one or more relay nodes, and a receiving node, a switching action of a timeslot configuration table in each node is performed between a first timeslot configuration table and a second timeslot configuration table managed and maintained by the sending node, and when a content related to the timeslot configuration table is switched from the timeslot configuration table CA to the timeslot configuration table CB, as shown in fig. 4, the method further includes:
in step 201, the service is normal at time T0, the configuration is normal, the bypass module, the associated module, and the forwarding module use the timeslot configuration table CA, and the corresponding synchronization pattern is denoted as SA.
In step 202, at time T1, the nodes start switching negotiation between the timeslot configuration table CA and the timeslot configuration table CB via the bypass overhead by the bypass module, and the corresponding synchronization pattern is denoted as SB.
In step 203, at time T2, the nodes start activating the timeslot configuration table CB through the associated module via the associated overhead; after receiving the synchronization pattern SB from upstream, the channel associated overhead processing module immediately notifies the forwarding module to activate the timeslot configuration table CB.
In step 204, the service is normal and the configuration is normal at time T3, and the bypass module, the associated module and the forwarding module use a timeslot configuration table CB.
The above steps 201 and 204 are described in detail one by one:
at time T0, the method specifically includes:
the bypass cost and the associated cost of each node carry synchronous patterns SA, the synchronous patterns are matched to obtain corresponding synchronous patterns SA, and the configuration indication of the synchronous patterns is an activation time slot configuration table CA;
and the forwarding module of each node performs service transceiving and forwarding processing according to the indication of the associated module and the first time slot configuration table, wherein the content of the first time slot configuration table is a time slot configuration table CA.
At time T1, the method specifically includes:
the sending node carries new overhead information in the bypass overhead, the new overhead information is a description time slot configuration table CB, and the bypass overhead carries a new associated overhead synchronization pattern SB;
the bypass management module in the sending node configures another second time slot configuration table of the forwarding module of the sending node through the synchronous channel, and the configuration content is a time slot configuration table CB;
a bypass module in a sending node monitors an acknowledgement message ACK in a receiving direction;
the bypass cost of the sub-channel time slot occupation information is also sent, the original associated cost synchronous pattern SA is carried in the bypass cost, and the original cost is still effective;
a forwarding module in the sending node executes a first time slot configuration table to perform service transceiving and forwarding processing according to the indication of the associated overhead processing module, wherein the content of the first time slot configuration table is a time slot configuration table CA;
after receiving a time slot configuration table CB carried in the bypass overhead of the sending node, a bypass module of the relay node configures a second time slot configuration table of a forwarding module of the relay node through a synchronous channel, wherein the configuration content is the time slot configuration table CB;
the bypass module of the relay node configures the synchronization pattern of the associated module through a synchronization channel, and the configuration content is as follows: if the synchronous pattern SB is identified, activating a second time slot configuration table of the forwarding module, wherein the content of the second time slot configuration table is the time slot configuration table CB;
the associated module of the relay node can configure east and west associated attributes; after the attribute is configured, if the east and west receive the activation message, the activation message is transmitted to the west along with the route;
a forwarding module of the relay node executes a first time slot configuration table for service transceiving and forwarding according to the indication of the associated overhead processing module, wherein the content of the first time slot configuration table is CA;
a bypass module of the receiving node configures a second time slot configuration table of the forwarding module through a synchronous channel, wherein the configuration content is a time slot configuration table CB;
the bypass module of the receiving node configures the synchronization pattern of the associated overhead module through a synchronization channel, and the configuration content is as follows: if the synchronous pattern SB is identified, activating a second time slot configuration table of the forwarding module;
a bypass module of the receiving node replies an acknowledgement message ACK to the sending node in the reverse direction;
and the forwarding module of the receiving node executes a first time slot configuration table for service transceiving and forwarding according to the indication of the associated overhead processing module, wherein the content of the first time slot configuration table is CA.
At time T2, the method specifically includes:
the bypass module of the sending node receives the acknowledgement message ACK in the receiving direction and then executes the activation action;
a bypass module of the sending node configures the synchronous pattern of the associated overhead module through a 'synchronous' channel, and requires the associated overhead synchronous pattern to be switched to the SB;
the channel associated module of the sending node immediately informs a forwarding module to activate a second time slot configuration table, and simultaneously, the sent overhead synchronization pattern in the channel associated overhead is switched to SB;
a forwarding module of the sending node executes a second time slot configuration table for service transceiving and transfer processing according to the indication of the associated overhead processing module, wherein the content of the second time slot configuration table is CB;
after receiving the synchronous pattern SB from the upstream, the channel associated module of the relay node immediately informs a forwarding module of the relay node to activate a second time slot configuration table;
and if the associated module of the relay node is configured with east and west associated attributes. When the west channel associated signaling is sent, the synchronous pattern is immediately updated to SB;
a forwarding module of the relay node activates a second time slot configuration table according to the indication of the associated overhead processing module, and performs service transceiving and transfer processing according to the time slot configuration table 2, wherein the content of the second time slot configuration table is CB;
after a channel associated module of the receiving node receives a synchronous pattern SB from the upstream, immediately notifying a forwarding module to activate a second time slot configuration table;
and a forwarding module of the receiving node activates a second time slot configuration table 2 according to the indication of the associated overhead processing module, and the second performs service reception according to the time slot configuration table, wherein the content of the second time slot configuration table is CB.
At time T3, the method specifically includes:
and after the action full flow at the time T2 is executed, the time T3 is entered, and the overhead and the service of sending, relaying and receiving are all switched.
Example 2:
fig. 5 is a schematic diagram of a technical system implementation according to an embodiment of the present invention. As shown in the figure, the service flow is that the service completes multiplexing encapsulation from the sub-channel to the channel and then to the interface in the sending process; the relay node finishes channel termination, and the sub-channel service is encapsulated again after crossing in east and west directions and is sent to a downstream node; the receiving node completes the termination of the channel and the sub-channel, extracts the service from the sub-channel and transmits the service to the downstream equipment. In this technical implementation, the device mainly comprises the following modules and systems:
1) multiplex management system: comprehensively managing and configuring the associated overhead processing module, the bypass overhead processing module and the configuration relationship between the associated overhead processing module and other modules of the service forwarding system; a synchronization and coordination mechanism that manages the associated and bypass overheads.
2) Multiplexing forwarding system: realizing the insertion, extraction and exchange of the multiplexing service forwarding, the associated path and the bypass overhead.
3) An associated overhead processing module: the method is used for inserting and checking the associated overhead. When time slot switching is carried out, synchronization with bypass overhead is required to be carried out, and time slot adjustment of services is completed in a matching manner; specific key design points:
(a) and completing the receiving and sending processing of the associated overhead.
(b) The associated overhead processing module controls how the forwarding module selects the time slot configuration table.
(c) And the receiving direction of the path associated overhead processing module controls the switching of the configuration table in real time according to the synchronous mark, and the switching takes effect immediately.
(d) The synchronous mark and the time slot configuration table have corresponding relation.
(e) The manual or "bypass overhead processing module" configures its synchronization marker through the "synchronization" channel.
(f) After the synchronous mark is activated, the path associated overhead processing module carries out the following processing:
the sending direction controls the switching of the configuration table of the forwarding module in real time.
And sending out the corresponding synchronous mark along the path, and taking effect immediately.
And activating the synchronous mark by one or more other channels in the cascade notification equipment according to the configuration.
(g) The synchronization mark activation entry of the associated overhead processing module can be configured as follows:
from a manual configuration.
An activation request in the "synchronization" channel from the "bypass overhead processing module".
Activation requests (activation delivery mechanism) from other channels in the "associated overhead processing module".
4) A bypass overhead processing module: for bypassing overhead insertion, checksum exchange. Wherein the switching capability needs to switch the subchannel overhead in the bypass overhead modules in the east and west directions. The key design points are as follows:
(a) the reception and transmission processing of the bypass overhead is completed. The bypass overhead may come from any channel.
(b) The synchronization mark of the associated overhead processing module can be configured through a synchronization channel.
(c) The slot configuration table of the forwarding module may be configured.
(d) For small particle switching nodes. The bypass overhead processing module also needs to be capable of completing intersection of small-particle overhead east-west data according to small-particle intersection configuration.
5) A forwarding module: and realizing the multiplexing service forwarding according to the time slot mapping relation configured by the activated time slot configuration table. The key design points are as follows:
(a) the timeslot is configured with two timeslot configuration tables, identified as TA and TB, of which only one is active.
(b) The manual or "bypass overhead processing module" configures its slot configuration table through the "isochronous" channel.
(c) Which of the two slot configuration tables takes effect is controlled by the "bypass overhead handling module".
Example 3:
the embodiment of the invention provides a management system for realizing multiplexing technology based on message slicing, which belongs to the specific presentation of a system framework presented in the embodiment 2 on the basis of combining the method presented in the embodiment 1, wherein in a scene that the system comprises a sending node, one or more relay nodes and a receiving node, when a time slot configuration table is switched from a CA (conditional access) to a time slot configuration table CB, the system specifically comprises the following steps:
and the T0 time service is normal, the configuration is normal, the bypass module, the associated module and the forwarding module adopt a time slot configuration table CA, and the corresponding synchronous pattern is marked as SA.
At time T1, each node switches and negotiates between the start timeslot configuration table CA and the timeslot configuration table CB via the bypass overhead via the bypass module, and the corresponding synchronization pattern is denoted as SB.
At the time of T2, all nodes start to activate a time slot configuration table CB through a channel associated module and channel associated overhead; after receiving the synchronization pattern SB from upstream, the channel associated overhead processing module immediately notifies the forwarding module to activate the timeslot configuration table CB.
And the service is normal at the time of T3, the configuration is normal, and the bypass module, the associated module and the forwarding module adopt a time slot configuration table CB.
In the embodiment of the present invention, the process executed at the time T0-T3 is as shown in fig. 6, and is set forth as follows:
time T0:
(1) and all the nodes carry synchronization patterns SA with the bypass overhead and the associated overhead, the synchronization patterns are matched, and the synchronization patterns are configured into an activated time slot configuration table A.
(2) The forwarding module executes the time slot configuration fig. 3 to perform service transceiving and transit processing according to the indication of the associated overhead processing module, and the content of the time slot configuration fig. 3 is CA.
Time T1:
(1) a sending node:
a) and the bypass overhead carries new overhead information description sub-channel time slot occupation information B, and the bypass overhead carries new associated overhead synchronization pattern SB.
b) And the bypass overhead processing module configures another time slot configuration table 2 of the forwarding module through a synchronous channel, and the configuration content is CB.
c) And the bypass overhead processing module monitors an acknowledgement message ACK in the receiving direction.
d) And sending the bypass cost of the sub-channel time slot occupation information, wherein the bypass cost carries the original associated cost synchronous pattern SA. The original overhead is still in effect.
e) And the forwarding module executes the time slot configuration figure 3 to perform service transceiving and transfer processing according to the indication of the associated overhead processing module, wherein the time slot configuration figure 3 is CA.
(2) A relay node:
a) and the bypass overhead processing module configures another time slot configuration table 2 of the forwarding module through a synchronous channel, and the configuration content is CB.
b) The bypass overhead processing module configures the synchronous pattern of the associated overhead module through a 'synchronous' channel, and the configuration content is as follows: if a synchronization pattern SB is identified, the slot configuration table 2 of the forwarding module is activated.
c) And the associated overhead module can configure east and west associated attributes. And after the attribute is configured, if the east and west receive the activation message, the activation message is transmitted to the west along the path.
d) And the forwarding module executes the time slot configuration figure 3 to perform service transceiving and transit processing according to the indication of the associated overhead processing module, wherein the time slot configuration figure 3 contains CA.
(3) The receiving node:
a) and the bypass overhead processing module configures another time slot configuration table 2 of the forwarding module through a synchronous channel, and the configuration content is CB.
b) The bypass overhead processing module configures the synchronous pattern of the associated overhead module through a 'synchronous' channel, and the configuration content is as follows: if a synchronization pattern SB is identified, the slot configuration table 2 of the forwarding module is activated.
c) And the bypass overhead module replies an acknowledgement message ACK to the sending node in the reverse direction.
d) And the forwarding module executes the time slot configuration figure 3 to perform service transceiving and transit processing according to the indication of the associated overhead processing module, wherein the time slot configuration figure 3 contains CA.
Time T2:
(1) a sending node:
a) the bypass overhead processing module receives the acknowledgement message ACK in the receive direction and then performs the activation action.
b) And the bypass overhead processing module configures the synchronous pattern of the associated overhead module through a synchronous channel and requires the associated overhead synchronous pattern to be switched to the SB.
f) And the associated overhead module immediately informs the forwarding module to activate the time slot configuration table 2, and simultaneously, the overhead synchronization pattern in the associated overhead is sent to be switched to the SB.
d) And the forwarding module executes the time slot configuration table 2 to perform service transceiving and forwarding processing according to the indication of the associated overhead processing module, wherein the content of the time slot configuration table 2 is CB.
(2) A relay node:
a) and after the associated overhead processing module receives the synchronous pattern SB from the upstream, immediately notifying the forwarding module to activate the time slot configuration table 2.
b) And if the associated overhead module is configured with the east and west associated attributes. When the west channel associated signaling is sent, the synchronization pattern is also updated to SB immediately.
c) And the forwarding module activates a time slot configuration table 2 according to the indication of the associated overhead processing module, performs service transceiving and forwarding processing according to the time slot configuration table 2, and the content of the time slot configuration table 2 is CB.
(3) The receiving node:
a) and after the associated overhead processing module receives the synchronous pattern SB from the upstream, immediately notifying the forwarding module to activate the time slot configuration table 2.
b) And the forwarding module activates the time slot configuration table 2 according to the indication of the associated overhead processing module, receives the service according to the time slot configuration table 2, and the content of the time slot configuration table 2 is CB.
Time T3:
and after the action full flow at the time T2 is executed, the time T3 is entered, and the overhead and the service of sending, relaying and receiving are all switched.
It should be noted that, for the information interaction, execution process and other contents between the modules and units in the apparatus and system, the specific contents may refer to the description in the embodiment of the method of the present invention because the same concept is used as the embodiment of the processing method of the present invention, and are not described herein again.
Those of ordinary skill in the art will appreciate that all or part of the steps of the various methods of the embodiments may be implemented by associated hardware as instructed by a program, which may be stored on a computer-readable storage medium, which may include: read Only Memory (ROM), Random Access Memory (RAM), magnetic or optical disks, and the like.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A management method for realizing multiplexing technology based on message slice is characterized in that the overhead is divided into channel associated overhead and bypass overhead, the channel associated overhead is embedded into a cell header and is forwarded along with a service for monitoring the service forwarding behavior; the bypass overhead is used for channel container self management and/or container content management;
the channel associated cost and the bypass cost are based on a synchronous mechanism, so that the bypass cost can manage the multiplexed channel container and/or sub-channel container in real time;
the method for realizing real-time management of the bypass overhead on the multiplexed channel container and/or sub-channel container based on the path associated overhead and the bypass overhead is based on a synchronization mechanism, and specifically comprises the following steps:
the associated cost and the bypass cost are respectively provided with an identification ID for carrying out the association of the associated cost and the bypass cost;
and the path associated overhead and the bypass overhead are respectively provided with a synchronous pattern SYN which is used for distinguishing the new overhead from the old overhead during the time slot configuration table changing period and matching the identification ID to complete the content matching between the path associated overhead and the bypass overhead.
2. The method according to claim 1, wherein the associated overhead includes a sequence number and/or a CRC, and the monitoring of the service forwarding behavior is performed incrementally with respect to each cell in the same channel, and specifically includes:
cell reverse order detection, cell loss detection, cell error code detection, link quality monitoring, and channel associated detection.
3. The message slice-based multiplexing management method of claim 1, wherein the method comprises:
the bypass overhead is transmitted by separately configuring a small-particle tunnel through Flexe oh overhead and Flexe-CLIENT overhead; alternatively, the first and second electrodes may be,
the bypass overhead is transmitted over the normal packet link.
4. The message slice-based management method for implementing multiplexing technology according to claim 1, wherein each node of the network includes a bypass module, a path associated module, and a forwarding module:
the associated module is used for completing insertion, extraction and verification of associated overhead, synchronizing with bypass overhead when the time slot configuration table is switched, and completing time slot adjustment of each service under the associated time slot configuration table in a matching way;
the bypass module is used for completing the receiving and sending processing of the bypass overhead and the insertion, the check and the exchange of the bypass overhead; the exchange of the bypass overheads is used to exchange the subchannel overheads in the bypass modules in the nodes in the upstream and downstream directions;
and the forwarding module is used for realizing the multiplexing service forwarding according to the time slot mapping relation configured by the activated time slot configuration table.
5. The message slice-based multiplexing management method of claim 1, wherein the network node comprises a sending node:
the forwarding module of the sending node realizes multiplexing of the multi-channel sub-channel service into a channel container according to the activated time slot configuration table, and the channel container cuts the service message into cells for sending;
a bypass module of a sending node receives data of a time slot configuration table so as to be matched with the channel associated cost in the cell data monitored by the channel associated module, and the monitoring of the bypass cost on a channel container and a sub-channel container is realized;
and the channel associated module of the sending node embeds channel associated overhead on each cell, wherein the channel associated overhead carries one or more items of overhead information in a channel marker ID, a sequence number, IS-OAM and a supervision instruction.
6. The message slice-based management method for implementing multiplexing technology according to claim 1, wherein the network node includes a relay node, and the relay node performs service crossing according to an active timeslot configuration table of upstream and downstream:
a bypass module of the relay node terminates the channel overhead and the sub-channel overhead in the upstream bypass overhead; simultaneously sending bypass overhead downstream;
wherein, the sub-channel spending data in the bypass spending is exchanged from the upstream bypass spending to the downstream bypass spending, and is continuously transmitted forward following the sub-channel;
a path associated module of the relay node terminates the upstream path associated overhead and completes the management of the channel and the sub-channel by matching with the bypass overhead data;
and the channel associated module embeds channel associated overhead into downstream cells.
7. The message slice-based multiplexing management method of claim 1, wherein the network node comprises a receiving node, and terminates the granular service according to the activated timeslot configuration table:
a bypass module of the receiving node terminates the channel overhead in the upstream bypass overhead;
and the associated module of the receiving node terminates the upstream associated overhead and completes the channel and sub-channel management by matching with the bypass overhead data.
8. The method for managing multiplexing on the basis of packet slicing as claimed in claim 1, wherein in a scenario including a sending node, one or more relay nodes, and a receiving node, the switching action of the timeslot configuration table in each node is performed between a first timeslot configuration table and a second timeslot configuration table managed and maintained by the node, and when the content related to the timeslot configuration table is switched from timeslot configuration table CA to timeslot configuration table CB, the method further comprises:
at the time of T0, the service is normal, the configuration is normal, the bypass module, the associated channel module and the forwarding module adopt a time slot configuration table CA, and the corresponding synchronous pattern is marked as SA;
at the time of T1, all nodes start switching negotiation from the time slot configuration table CA to the time slot configuration table CB through a bypass module, and the corresponding synchronous pattern is marked as SB;
at the time of T2, all nodes start to activate a time slot configuration table CB through a channel associated module and channel associated overhead; wherein, the channel associated overhead processing module immediately informs the forwarding module to activate the time slot configuration table CB after receiving the synchronous pattern SB from the upstream;
and at the time of T3, the service is normal, the configuration is normal, and the bypass module, the channel associated module and the forwarding module adopt a time slot configuration table CB.
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