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A method for handover of dedicated and shared resources for a mobile station in dual transfer mode

A dual transmission mode, dedicated resource technology, applied in transmission systems, digital transmission systems, data exchange networks, etc., can solve the problem of increasing the estimated value, and achieve the effect of enhancing functional behavior

Active Publication Date: 2008-02-27
NOKIA TECH OY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It should be noted that any packet recovery required for cell changes and routing area changes would significantly increase this estimate

Method used

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  • A method for handover of dedicated and shared resources for a mobile station in dual transfer mode
  • A method for handover of dedicated and shared resources for a mobile station in dual transfer mode

Examples

Experimental program
Comparison scheme
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no. 1 example

[0045] First embodiment: using the new "DTM switching command" message

[0046] When in the dual transmission mode, the MS will periodically send a "measurement report" or "enhanced measurement report" message to the network, that is, the source base station subsystem BSS. These messages contain measurements about the reception characteristics from the current cell and neighboring cells. Once the measurement message is received, the network can initiate inter-cell or intra-cell handover of dedicated and shared resources by sending eg "handover required" (for CS) and "PS handover required" (for PS) messages. Another approach could be to enhance the "Handover Required" (for CS) message by including an indication that both resources need to be handed over.

[0047] For example, after signaling is performed between source and target BSS and core network elements (Mobile Services Switching Center MSC and Serving GPRS Support Node SGSN), and if dedicated and shared resources are su...

no. 2 example

[0062] Second embodiment: using existing "handover command" or "DTM assignment command" messages with new parameters

[0063] According to a second preferred embodiment of the present invention, the documents 3GPP TS 44.018 "Radio Resource Control Protocol" and documents 3GPP TS 44.060 "Radio Link Control / Medium Access Control (RLC / MAC) protocol" are used by adding the necessary missing parameters Existing messages specified in , thus making DTM handover possible. Messages sent on the RR layer on the primary DCCH may be enhanced, whereby for example, for the "Handover Command" message, parameters similar to those stated above in connection with the first embodiment will be added, while for the "DTM Assignment command" message needs to add at least a frequency parameter. At the RLC / MAC level, for example, the messages "Packet Slot Reconfiguration" or "Multi-TBF Slot Reconfiguration" (temporary data block flow) can be used with added dedicated resource parameters.

[0064] In ...

no. 3 example

[0066] Third Embodiment: Use of "Switch Command" and "PS Switch Command" messages

[0067] According to the third embodiment of the present invention, both "handover command" and "PS handover command" messages are used to implement DTM handover, which is very preferable in this case - thus avoiding introducing unnecessary Delay - these messages will not be sent continuously (ie the BSS will not be specified to send eg "PS Handover Command" message only if it receives a "Handover Command" message).

[0068] In the existing "handover command" message, a new parameter needs to be added, which indicates that the message is sent as a part of the DTM handover process. A similar indication may also be required in the "PS handover command" message, where it should be pointed out that in the document 3GPP TS 43.129 "Packet-switched handover for GERAN A / Gb mode; stage 2" It has been pointed out that switching with PS The related Information Element (IE) enhanced existing Packet Cell Ch...

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Abstract

A method for the handover of dedicated as well as shared resources for a communication device. The communication device simultaneously uses circuit switched and packet switched bearer services of a communication network according to a certain connection mode. The method comprises performing a handover procedure, wherein a change from old resources used by the communication device to new resources to be used by the communication device is effected simultaneously for dedicated as well as shared resources .

Description

technical field [0001] The invention relates to a method for switching between dedicated and shared resources in dual transport mode, ie while participating in circuit-switched and packet-switched bearer services at the same time. The invention also relates to a system, a network element and a communication device for this purpose. Background technique [0002] The original GSM (Global System for Mobile Communications) network was designed for voice services. When GSM data services came into use, it became apparent that Circuit Switched (CS) bearer services were not well suited for certain applications with characteristics including burstiness. Therefore, a completely new packet-switched (PS) data transmission service GPRS (General Packet Radio Service) is also defined for packet services. GPRS is a packet radio network using the GSM network which attempts to optimize data packet transmission by means of the GPRS protocol layer on the air interface between the mobile stati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04Q7/38H04L12/56H04W36/14H04W88/06
CPCH04W36/14H04W72/00H04W88/06H04W36/06
Inventor R·韦特蒂南I·维尔特日V·勒克斯厄皮G·塞比尔
Owner NOKIA TECH OY
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