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Handover control system, method for the same, and mobile communication system and radio base station

A mobile communication system and radio base station technology, applied in the field of handover control system, can solve the problems that cannot be used in UTRAN LTE system, cannot significantly change the handover control scheme, etc.

Inactive Publication Date: 2008-04-23
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Basically, the switching control scheme cannot be changed significantly
Therefore, the selection between anchored and non-anchored handover control schemes described in Patent Document 1 cannot be used in UTRAN LTE systems

Method used

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  • Handover control system, method for the same, and mobile communication system and radio base station
  • Handover control system, method for the same, and mobile communication system and radio base station
  • Handover control system, method for the same, and mobile communication system and radio base station

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Embodiment Construction

[0036] Exemplary embodiments of the present invention are described below using the drawings. FIG. 1 is a schematic system diagram to which an exemplary embodiment of the present invention is applied. Referring to FIG. 1, eNBs 2 and 3 in a UTRAN LTE system have cells 4 and 5, respectively, as their coverage areas. Each of the eNBs 2 and 3 implements the functions of a radio base station (Node B) and a radio network controller (RNC) in a conventional mobile communication system in one node, and the eNBs 2 and 3 are referred to herein as radio base stations.

[0037] The eNBs 2 and 3 are connected to the core network node aGW 1 through the S1 interface. An interface connecting eNBs to each other is called an X2 interface via which UE information and user data are forwarded at the time of handover. The present invention is an improvement of the handover procedure when UE (mobile terminal) 6 in cell 4 of eNB 2 moves in the direction of arrow a and enters cell 5 of adjacent eNB 3...

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Abstract

The invention provides a handover control system, method for the same, and mobile communication system and radio base station using the same. A handover control system in a mobile communication system includes; a first handover processing unit for controlling forwarding of user data from a source radio base station to a target radio base station in handover processing caused by movement of a mobile communication terminal; a second handover processing unit for controlling transmission of the user data from an upper layer node to both the source radio base station and the target radio base station in the handover processing; and a control unit for selectively activating either the first handover processing means or the second handover processing means according to a preliminarily requested communication quality for the user data.

Description

technical field [0001] The present invention relates to a handover control system and method thereof, a mobile communication system and a radio base station using the same, and more particularly, to a handover control scheme of a mobile communication system. Background technique [0002] 3GPP (Third Generation Partnership Project), which researches and determines specific standards for mobile communication systems, is already researching radio access network technologies used in next-generation mobile communication systems, whose key features are large capacity, short delay, and optimized packet communication. This technology is called UTRAN LTE (Universal Terrestrial Radio Access Network Long Term Evolution, Universal Terrestrial Radio Access Network Long Term Evolution). At the same time, the framework on the core network side called SAE (System Architecture Evolution, System Architecture Evolution) is being studied. [0003] The research on UTRAN LTE assumes that the fu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04L12/56H04W36/02H04W36/10H04W36/18H04W36/30H04W36/32H04W36/38
CPCH04W36/32H04W36/10H04W36/324
Inventor 秋田裕也
Owner NEC CORP