Method for transmitting frame timing and frame number of general radio interface

Abstract

The present invention relates to universal wireless interface frame timing and frame number transmission method to make wireless general purpose interface capable of transmitting variety different wireless frame timing and frame number. It contains according to wireless frame size and CPRI frame size least common multiple relation, selecting continue C2 number frame period bearing C1 number wireless frame, transmitting in least common multiple cycle as unit, each time scaling up C1 number wireless frame number for keeping wireless frame number right transmission, in this way to different frame size only needing to determine C2, C1 numeric value capable of realizing uniform transmission. To different system frame size, said invention adopts control word indicating wireless frame system type, in CPRI frame dividing expanding frame number combination to form wireless frame number and frame timing message used for distinguishing description variety system, and transmitted by synchronous bytes and superframe number etc control word, in opposite terminal adopting corresponded method recovering wireless frame timing and frame number message.

Description

technical field [0001] The invention relates to a transmission method of frame timing and frame number on a general wireless interface, in particular to a transmission method of multiple standard frame timing and frame numbers on a general public wireless interface. Background technique [0002] The Common Public Radio Interface (CPRI for short) is a specification about key interfaces inside mobile communication wireless base stations publicly published by a number of companies in cooperation with the industry. The CPRI specification is a public specification on this key interface in the industry, providing a set of common standards for key internal interfaces of base stations. The CPRI is responsible for defining the key internal interface of the wireless base station between a radio equipment controller (Radio Equipment Controller, "REC" for short) and a radio equipment (Radio Equipment, "RE" for short). The goal of the standard is to create an open market for cellular ba...

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Problems solved by technology

[0014] In practical application, the above scheme has the following problems: the wireless frame timing and wireless frame number transmission scheme in CPRI V2.0 version is only suitable for WCDMA frame period of 10 milliseconds and wireless frame number transmission of 0-4095, and cannot support 802.16 Transmission of wireless frame timing and wireless frame number in e and GSM and other standards

Due to the great difference in the frame timing, frame interface and length of various standards, the existing CPRI or other wireless interfaces cannot realize the frame timing and frame number transmission of multiple standards

[0015] The main reason for this situation is that the current CPRI version or other existing wireless interfaces contain simple and fixed frame structure control words, which can only transmit wireless frames with a fixed single standard and frame length

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