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Method for adjusting inter network-element data transmission time in communication system

A technology of data transmission and adjustment method, applied in the direction of transmission system, electrical components, etc., can solve the problems such as the abnormal processing of the opposite end, the transmission delay oscillation of the transmission network, etc., to achieve the effect of ensuring stability and high adjustment accuracy

Inactive Publication Date: 2008-03-12
ZTE CORP
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0004] The technical problem to be solved by the present invention is the problem caused when the transmission delay of the transmission network oscillates and the opposite end cannot handle it normally, and a method for adjusting the data transmission time between network elements of the communication system is proposed

Method used

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  • Method for adjusting inter network-element data transmission time in communication system
  • Method for adjusting inter network-element data transmission time in communication system

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Embodiment Construction

[0030] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0031] FIG. 1 is a general flowchart of the time adjustment method proposed by the present invention. The time adjustment method proposed by the present invention will be described in detail below in conjunction with a specific embodiment of the time adjustment on the RNC side of the Iu interface. As shown in Figure 1:

[0032] (1) Initialize the system and preset values ​​first. Initialization includes: initialization counter N and continuous adjustment counter C; preset values ​​include: preset TTI or IPTI, preset tolerance value Toler_Value and allowable error TolerError, preset adjustment step size STEP, and STEP is a positive integer.

[0033] (2) When the system is started, the time when the receiver receives the first downlink data frame is used as the reference time TRef, and the continuous adjustment counter C is started at the same...

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Abstract

The method solves issue of frequent adjustment caused by network reason. In the invention following parameters are setup: number of maximum continuous adjustment MAX, step length increased in each adjustment STEP, system allowed error Toler_Value, adjustment allowed error TolerError, time out of timer, and maximum number of times to be adjusted M. these parameters are configurable based on different systems in order to meet different needs. Practice proves that the disclosed method is a convergent adjustment method ad possesses higher adjustment precision. The disclosed method keeps system stability in case abnormal situation happens (such as cause of network transmission, and not collect adjustment in opposite terminal etc.).

Description

technical field [0001] The invention relates to a method for adjusting the time of data transmission based on frame protocol between network elements in a communication system. Background technique [0002] In the communication system, when frame transmission is performed on the interface of adjacent network elements, there is a certain time interval between adjacent PDUs (Protocol Data Unit), that is, TTI (Transmit Timing Interval) or IPTI (Inter PDU Timing Interval), TTI (or IPTI) are predefined. During data transmission between two adjacent network elements, there is a time adjustment process between the network elements in order to reduce the receiver's buffer delay. Therefore, the frame protocols on these interfaces all provide the function of time adjustment. For example, the Iuup protocol on the Iu interface. The time adjustment is mainly to calculate the time advance (or lag) amount of the received data frame at the receiver, and feed back the measurement result to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/02H04L29/06
Inventor 苏绣江张银成于学鸿
Owner ZTE CORP
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