Method for controlling service cell updating

Abstract

The present invention discloses service cell updating control method. Said method includes RNC transmitting updating preparation message to source base station, source base station statistics UE going to send data quantity, feeding back to RNC to obtain residual transmitting time or through source base station directly obtaining residual transmitting time. RNC stops transmitting data to source base station notifying target base station to make service cell updating. RNC configures activation time numerically greater than residual transmitting time and transmitting target base station and UE. UE completes service cell updating, RNC in corresponded activation time to stop receive data from source service cell; begin to receive data from target service cell. The present invention effectively avoids UE data losing in service cell updating.

Description

technical field [0001] The present invention relates to wireless communication technology, in particular to serving cell update technology. Background technique [0002] High Speed ​​Downlink Packet Access (HSDPA, High Speed ​​Downlink Packet Access) is an important feature of the fifth version of WCDMA technology. Its introduction adds three channels, which are high-speed physical downlink shared channels for transmitting data information on the downlink ( HS-PDSCH), high-speed shared control channel (HS-SCCH) for transmitting downlink control information, and high-speed dedicated physical control channel (HS-DPCCH) for transmitting uplink feedback information. [0003] Since the data scheduling and flow control functions between different users are moved to the base station (NodeB) in the HSDPA technology, in the downlink direction, only one cell can transmit data to the receiving user. On the contrary, a user can establish a dedicated physical channel DPCH communication ...

AI Technical Summary

Problems solved by technology

[0006] like figure 2 As shown, when the source cell and the target cell in the HS-DSCH serving cell update process belong to different base stations, in the current technology, the high-speed media access control (MAC_hs) entity of the base station to which the source serving cell belongs is reset during the update process, As a result, the data stored in the MAC-hs entity cache in the base station is lost

[0007] For high-level services that use non-acknowledged transmission, the data loss of the base station means that the receiving end cannot receive complete data, resulting in a decline in service quality, such as video discontinuity, sound interruption, etc.

[0008] For the high-level business that uses confirmation to transmit data, the data loss of the base station means that the RNC needs to resend the data to the MAC_hs entity of the newly established base station through the interface between the RNC and the base station to which the new serving cell belongs. On the one hand, the interface On the other hand, because the RNC can only determine which data has not been correctly sent to the UE by the source base station after receiving the status report from the UE, and then according to the indication of the status report, the data that was lost The data is resent to the new base station, resulting in additional delay

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