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System and method for network handover

A network and switching technology, applied in the direction of electrical components, synchronization devices, radio/induction link selection and arrangement, etc., can solve the problems of limited arrangements, and achieve the effect of improving resource utilization and reducing inconvenience and interruption.

Inactive Publication Date: 2007-02-14
NEC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if such an arrangement is not feasible, the BSS must calculate the timing and advance values ​​by requesting the terminal to send an access burst
[0006] However, such an arrangement has limitations due to the extra signaling created and possible delays in the transit

Method used

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  • System and method for network handover

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Embodiment Construction

[0023] It will thus be appreciated that the present principles provide for the advantageous use of terminal location information to provide timing advance information to terminals in a manner that enables faster handover procedures with reduced signaling overhead.

[0024] In order to further illustrate the invention, the currently known handover procedure from a UMTS cell to a GSM cell, as specified in the current 3rd Generation Partnership Project (3GPP), will be discussed below.

[0025] When the SRNC decides that it needs to transfer from the UMTS cell to the GSM cell, it sends a RELOCATION REQUIRED message to the CN, which is used to initiate the transfer process to the GSM cell. During the handover process, the link to the Universal Mobile Telephony Service Terrestrial Radio Access Network (UTRAN) is dropped and a new link is established to the BSS associated with the GSM cell.

[0026] Then, a HANDOVER FROM UTRAN (handover from UTRAN) command is sent to the terminal, wh...

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Abstract

The invention provides for a telecommunications system and related method of handover from a first radio access technology to a second radio access technology for a mobile radio communications device within a mobile radio communications network, and including determining a timing advance value associated with the second radio access technology, and the method employing positional data of the device within the network for determining the said timing advanced value.

Description

technical field [0001] The present invention relates to systems and methods for network handover and, in particular, to applications employed in connection with mobile radio communications equipment required for handover from a first radio access technology to a second radio access technology. A system and method for network switching. Background technique [0002] In order to realize the full advantages obtainable with multimode radio communication devices, such as multimode cellular telephones, it is recognized that these devices may need to change from operating using one network's radio access technology to utilizing a second network's different radio access technology. into technology to work. For example, with the promotion and use of third-generation networks, these networks may overlap with earlier second-generation networks. Users of these networks will be divided between the two depending specifically on user priority, requested service, coverage area and other o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04W36/14
CPCH04W36/0072H04W56/0045H04W36/14H04W36/1443
Inventor 哈密迪·法拉柯维鲁皮赖·玛尼默翰
Owner NEC CORP