Determination and processing method of sequential data SN in service-specific connection protocol

An orderly data, connection-oriented technology, applied in data exchange networks, digital transmission systems, correct operation testing, etc., can solve the problems of confusion in the receiving side of buffered data, violation of the principle of sequential consistency, business anomalies, etc., to avoid The effect of receive buffer confusion

Inactive Publication Date: 2008-03-19
ZTE CORP
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AI Technical Summary

Problems solved by technology

Violation of the sequential consistency principle that the SSCOP protocol must follow when forwarding data will lead to business exceptions and make the receiver receive buffered data confusion

Method used

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  • Determination and processing method of sequential data SN in service-specific connection protocol
  • Determination and processing method of sequential data SN in service-specific connection protocol
  • Determination and processing method of sequential data SN in service-specific connection protocol

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Embodiment Construction

[0051] In Figure 3, on the basis of the original processing of the SD serial number, the judgment process of the SD serial number and the lower boundary VR(R) of the receiving window is added, and the specific steps are as follows:

[0052]Step 110, judging whether SD.N(S) is smaller than VR(MR), that is, judging whether the SD falls within the upper boundary of the receiving window WinLen. If it is "true", then perform step 120; otherwise, discard the SD, check whether the local end has space for receiving loss, if so, send a USTAT PDU to the opposite end, and if not, end the process;

[0053] Step 120, judge whether the SD is the next SD expected to be received by the local end, that is, judge whether SD.N(S) is equal to VR(R), if it is "true", send the SD to the upper layer service and check the reception Buffer, send legal data therein to the business layer, end, otherwise, execute step 130;

[0054] Step 130, judge whether the serial number of SD is greater than VR (R), ...

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Abstract

The invention provides a method for determining and processing sequential data signals in service specific connection-oriented protocol. When receiving sequential data SD, a receiver makes a judgment according to the serial number SD.N(S) of the sequential data and the value of basic variable of SSCOP protocol and processes the SD according to the result of the adjustment. The method is characterized in that the determination and treatment process also includes judging whether the serial number SD.N(S) of the sequential data is less than the sequential number VR(R) of the next data pack desired to be received by a receiving window. If so, the SD is discarded and the process is ended, otherwise subsequent determination and treatment will be conducted.

Description

technical field [0001] The invention relates to a processing method of a service specific connection-oriented protocol SSCOP (SERVICE SPECIFIC CONNECTION ORIENTED PROTOCOL) in an asynchronous transfer mode ATM signaling network. In particular, it relates to a method for processing sequence numbers of SD (Sequenced Data) in the SSCOP protocol layer when the link is in service state. Background technique [0002] When the third-generation mobile communication system uses ATM technology as the ground transmission bearer, the Iu interface between the core network CN and the radio network controller RNC, the Iub interface between the RNC and the base station NodeB, and the Iur interface between the RNCs are all implemented using the SSCOP protocol. Reliable transmission of signaling data. [0003] The SSCOP protocol is responsible for the transmission of information and control information between two point-to-point entities. The upper layer provides services for the service-sp...

Claims

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Application Information

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IPC IPC(8): H04L12/56H04L29/06H04L1/00H04L1/24
CPCH04L47/32H04L47/10H04L47/34
Inventor 胡典雄樊沛赵泽盛
Owner ZTE CORP
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