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Activation time for target based high speed serving cell change

A target cell, activation time technology, applied in electrical components, wireless communication, network topology, etc., can solve problems such as call loss

Active Publication Date: 2011-02-23
TELEFON AB LM ERICSSON (PUBL)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] However, for user equipment traveling at very high speeds, there is a problem because the link quality of the serving cell, i.e. the source cell, can degrade before the cell change procedure to the target cell is complete
If this happens before the network controller is able to successfully transmit the physical channel reconfiguration message 207, the network controller will no longer be able to reach the user equipment and the call will be lost

Method used

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  • Activation time for target based high speed serving cell change
  • Activation time for target based high speed serving cell change
  • Activation time for target based high speed serving cell change

Examples

Experimental program
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Embodiment Construction

[0040] Basically, the present solution relates to a method and arrangement that allows the HS-DSCH serving cell by having the user equipment decide the activation time, ie the connection frame number, in which it will move from the serving cell to the target cell Synchronous operation for changes (HSCC). The user equipment reports this connection frame number to the network controller in the measurement report that triggers the cell change. Then, if the HS-SCCH of the user equipment in the target cell is scheduled before the connection frame number, the user equipment is allowed to move to the target cell at the connection frame number. If not, it stays in the source cell.

[0041] image 3 A wireless communication network 300 is shown using technologies such as UTRAN. Wireless communication network 300 includes base stations serving cells, eg, base station 305 serving cell 306 and base station 307 serving cell 308 . The base stations 305 and 307 are eg radio base stations...

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Abstract

The present solution relates to a method in a user equipment (310) for setting up an activation time of a cell change of the user equipment (310) from a serving cell (305) to a target cell (308) in a wireless communications network (300). The user equipment (310) receives (501) a timing offset from a network controller (315), calculates (502) a cell change activation time based on the timing offset and transmits (503) the calculated activation time to the network controller (315). Then, the user equipment (310) receives (504) an approval of the cell change from the network controller (315) and moves (505) from the serving cell (306) to the target cell (308) at the activation time if the approval has been received.

Description

technical field [0001] The present solution relates to a method and arrangement in a telecommunication system, in particular it relates to a method and arrangement for synchronizing a High Speed ​​Downlink Shared Channel (HS-DSCH) Serving Cell Change (HSCC) procedure in a telecommunication system. Background technique [0002] Universal Mobile Telecommunications System (UMTS) or third generation (3G) networks can be divided into major components, namely, one or more core networks responsible for establishing and controlling user sessions and UMTS radios that control access to the air interface Access Network (UTRAN). The interface between the UTRAN and the User Equipment (UE) is provided by nodes which may be referred to as "Node Bs" (similar to base stations in 2G / GSM networks) or base stations. The NodeB is responsible for transmitting and receiving data over the air interface and is controlled by the radio network controller. User and control data are routed between the...

Claims

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Application Information

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IPC IPC(8): H04W36/36
CPCH04W36/08H04W36/36H04W36/00837H04W84/042
Inventor S·瓦格
Owner TELEFON AB LM ERICSSON (PUBL)