Method for reducing data-bag lose in renewing course of high-speed downward sharing channel service residence

Abstract

After receiving message that user stats update of service sub zone through high speed down sharing channel (HS-DSCH), the method adjusts up user's dispatching priority. The priority adjusted up takes effect till the end of update procedure. Thus, more users' data in buffer of media access control in high speed (MAC-hs) at source service sub zone can be sent out before reset of MAC-hs. The invention reduces loss of user's data.

Description

technical field [0001] The invention relates to a high-speed downlink packet access (HSDPA) technology in a wideband code division multiple access (WCDMA) system, in particular to a method for reducing data packet loss in the update process of a high-speed downlink shared channel serving cell. Background technique [0002] HSDPA is a technology for high-speed data transmission in the downlink of the WCDMA system proposed by 3GPP in its R5 protocol. What carries this data transmission is the high-speed downlink shared channel (HS) established between the user (UE) and the cell. -DSCH). In a WCDMA system, a user can establish connections with multiple cells, but the user can only receive HS-DSCH data from one cell, which is called an HS-DSCH serving cell. [0003] If the HS-DSCH wireless link is established in a cell with better signal quality, higher throughput will be obtained. Therefore, when the signal quality of the user's HS-DSCH serving cell becomes poor, and the signa...

AI Technical Summary

Problems solved by technology

[0013] In the above process, since the MAC-hs entity of the NodeB to which the source serving cell belongs needs to be reset during the update process of the HS-DSCH serving cell, the data stored in the MAC-hs entity cache of the NodeB will be lost

For services that are transmitted in a non-confirmation mode by the upper layer, the loss of NodeB data means that the receiving end cannot receive complete data, resulting in a decline in service quality, such as discontinuous video images and sound interruptions.

For the high-level business that uses confirmation to transmit data, the loss of NodeB data means that the RNC needs to resend the data to the MAC-hs entity of the NodeB that newly established the HS-DSCH through the interface between the RNC and the NodeB to which the new serving cell belongs In addition, the RNC can only confirm which data has not been correctly sent to the UE by the source NodeB after receiving the status report from the receiving end (UE), and then according to the status report Instructions to resend those lost data to the new NodeB, resulting in additional delay

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