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User interface data uplink/downlink transmission methods of time division BTS (Base Transceiver Station) for IP access

A technology of user plane data and transmission method, which is applied in the field of uplink and downlink transmission of user plane data in a BTS station, can solve problems such as complex recognition of user plane voice data format, heavy CPU load, increased risk, etc., and achieve good versatility and reliability Maintainability, CPU load reduction, and workload reduction effects

Inactive Publication Date: 2010-12-29
乔仁红
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are two problems in practical application. One is that the conversion between IP packets and TDM transmission is 2-bit conversion. This 2-bit conversion makes the CPU load of IPIB very heavy. At the same time, IPIB is responsible for the transfer of all communication protocols in the BTS. The CPU of IPIB The high load increases the risk of the entire BTS being affected by IPIB, and the reliability is not high; second, the recognition of various user plane voice data formats is very complicated, and the user plane data service code conversion is directly performed on the IPIB, making the system not universal. resistance, very bad for maintenance

Method used

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  • User interface data uplink/downlink transmission methods of time division BTS (Base Transceiver Station) for IP access
  • User interface data uplink/downlink transmission methods of time division BTS (Base Transceiver Station) for IP access
  • User interface data uplink/downlink transmission methods of time division BTS (Base Transceiver Station) for IP access

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Embodiment Construction

[0023] After IPIB receives the downlink user plane data transmitted by BSC through RTP (Real-time Transport Protocol, real-time transport protocol), it determines the carrier frequency to which the user plane data should be sent according to the UDP port number of the RTP session, and then The corresponding MCC channel on the CPU of the MCC (MultiChannel Controller, multi-channel controller) sends to the DSP on the corresponding carrier frequency in HDLC (High Level Data Link Control, advanced data link control) frame format. The HDLC frame data stream undergoes software decoding and CRC check processing in the DSP to form user plane data for the DSP baseband processing unit.

[0024] A method for uplink transmission of user plane data in a BTS station under IP access mode, including:

[0025] The carrier frequency DSP performs software CRC check on the uplink user plane data, encodes it to form a code stream conforming to the HDLC frame format, and sends it to the IPIB. Afte...

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Abstract

The invention provides user interface data uplink / downlink transmission methods of time division BTS (Base Transceiver Station) for IP access. The downlink transmission method comprises the steps of: transmitting downlink user interface data transmitted through IP Abis to a digital signal processor (DSP) in a frequency carrier module through a HDLC (High-level Data Link Control) ultra channel; and transmitting the data subjected to coding conversion and verification treatment to a base band processing unit. In addition, the uplink transmission method comprises the predefined steps of: carrying out coding conversion treatment on uplink user interface data on the DSP in the frequency carrier module, transmitting the uplink user interface data to an IP interface board through the HDLC ultra channel, and transmitting the uplink user interface data to a BSC (Base Station Controller) through IP.

Description

technical field [0001] The invention belongs to the field of mobile communication, and more specifically relates to a method for uplink and downlink transmission of user plane data in a BTS (Base Transceiver Station, Base Transceiver Station) with IP access. Background technique [0002] The BSC (Base Station Controller, Base Station Controller) and the BTS are usually connected by means of circuit transmission, the most common being E1 and T1 lines. With the rapid development of Internet and mobile communication, more and more mobile communication system equipment with all-IP architecture is popularized and applied. In this context, it is of great economic value to upgrade the existing BTS working in the TDM (Time Division Multiplexing, time division) mode to the IPAbis mode to connect to the BSC at a relatively low cost. [0003] The method currently used to implement this upgrade is that the BTS replaces the Abis interface board with an IPIB (IP Interface Board, IP inter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W88/08H04W80/02H04W92/12H04L29/06
Inventor 陈飞赵井军高世洪高健
Owner 乔仁红