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Mobile communicaton system, radio network controller and its data transmission method

A mobile communication system and network controller technology, applied in the field of data transmission, can solve problems such as high-speed packet data loss

Inactive Publication Date: 2007-10-24
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] Therefore, when a handover between base stations occurs due to movement, etc., of a user who is performing HSDPA-based high-speed packet communication using RLC-UM, the conventional data transmission method creates a problem that data loss of high-speed packets occurs at the mobile station

Method used

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  • Mobile communicaton system, radio network controller and its data transmission method
  • Mobile communicaton system, radio network controller and its data transmission method
  • Mobile communicaton system, radio network controller and its data transmission method

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Embodiment Construction

[0035] Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. 1 is a block diagram showing a configuration of an RNC (Radio Network Controller) according to an embodiment of the present invention, and schematically showing a data transmission mechanism in an IP (Internet Protocol) based network.

[0036] As shown in FIG. 1, the RNC 1 includes an IP route processor 2 and a recording medium 3, and is connected to the base stations (Node B#1 to Node B#N) 4-1 to 4-N, wherein the recording medium 3 stores in the A program (computer-executable program) executed at the IP routing processor 2 . The IP routing processor 2 includes a call control unit 21 , a data transmission unit 22 , a serial number storage unit 23 and a transmission destination IP address storage unit 24 .

[0037]In addition to the IP route processor 2, the RNC 1 also includes an Iu interface protocol processor, a radio interface processor, and the like, wh...

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PUM

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Abstract

A mobile communication system is provided which is capable of realizing high-speed packet data transfer without causing any data loss during handover between base stations while high-speed packet communication by an HSDPA system is in progress. When an RNC receives from a UE a message requesting activation of handover between Nodes B in the course of high-speed packet communication, it stores a Sequence Numbers of HS-DSCHFP that have been sent up to that moment to the NodeB, and informs a Serving NodeB of a destination of data. The RNC sends NBAP: Radio Link Reconfiguration Commit by routing and thereafter starts data transfer from the Serving NodeB to a Target NodeB.

Description

technical field [0001] The present invention relates to a mobile communication system, a radio network controller, and a data transmission method employed by the same, and more particularly, the present invention relates to a technology for realizing HSDPA (High Speed ​​​​High Speed ​​​​through an IMT (International Mobile Telecommunications)-2000-based system) Downlink Packet Access) data transmission between Node Bs (radio base stations) during high-speed packet communication. Background technique [0002] In order to achieve faster packet transmission based on IMT-2000 systems, HSDPA has recently become a fundamental consideration in the industry, its main goals are to increase the downlink peak data rate, reduce the transmission time delay, achieve high throughput rate, etc. . [0003] HSDPA is a system that provides high-speed packet transmission of 8 Mbps in the downlink, in which HS-DSCH (High Speed ​​Downlink Shared Channel) is used as a downlink transmission channe...

Claims

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Application Information

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IPC IPC(8): H04B7/26H04W40/34H04L45/80H04W4/06H04W28/00H04W36/00H04W36/02H04W36/08H04W36/36H04W80/04H04W92/12
CPCH04W92/12H04W80/04H04W36/02
Inventor 柴田和子植田佳央
Owner NEC CORP
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