Method for realizing business load uniform of No.7 signalling system
A technology of system business and No. 7 signaling, applied in the direction of transmission system, digital transmission system, electrical components, etc., to achieve the effect of business load balance and order guarantee
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Embodiment 1
[0059] The networking situation of this embodiment is as follows image 3 shown. Among them, Office A that completes the MAP / CAP service has three signaling points, and the signaling point codes are 111111, 222222, 333333 respectively; B, C, and D offices have one signaling point respectively, and the signaling point codes are 444444, 555555 respectively and 666666. The connections between Bureau A, Bureau B, Bureau C and Bureau D are as follows: image 3 As shown in , the signaling points are connected through link groups, and each link group has 16 links. This embodiment assumes that Bureau A adopts the hierarchical structure of the original No. 7 signaling protocol; when Bureau A sends a message to Bureau B, Bureau A must pass through an intermediate signaling point to send the message to Bureau B; the messages sent by Bureau A are in order Require.
[0060] Figure 4 A schematic diagram of the mask calculation performed by Bureau A is shown. Such as Figure 4 As sho...
Embodiment 2
[0085] The networking situation of this embodiment is still as image 3 shown. In this embodiment, it is assumed that there is an adaptation layer between the SCCP layer and the MTP layer of A office that completes the MAP / CAP service; the message sent by A office has no order requirement; the selector is 52DH; the mask value is the same as in the first embodiment . Figure 6 A schematic diagram of the mask calculation performed by the A office with the adaptation layer is shown. Such as Figure 6 As shown, the SCCP layer of office A randomly generates a 14-bit selector; the selector obtains the intermediate signaling point index through mask 2; the selector obtains the source signaling point index through mask 4; the selector passes through mask 5 Get the routing index; the selector gets the link index through the mask 6.
[0086] see Figure 7 , in this embodiment, the steps of A station sending a message include:
[0087] Step 701 is the same as step 501 in the first ...
Embodiment 3
[0106] The networking situation of this embodiment is as follows figure 2 As shown, it is assumed that office A that completes the MAP / CAP service has a signaling point 111111, and office B has a signaling point 222222. The connection relationship between office A and office B is shown in the figure. In this embodiment, it is assumed that messages sent by office A have sequence requirements; office A has no adaptation layer; and the link group between office A and office B has 16 links. Because office A of this embodiment has only one signaling point, there is no need to define the signaling point index field of this office, and the SLS field and the OPC field of the message can be defined as selectors with all 18 bits in total. The OPC field, the SLS field and the OPC field of the message The format of the DPC field is shown in Table 2.
[0107] Figure 8A schematic diagram of mask calculation performed in the original SS7 protocol structure in this embodiment is shown. A...
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