Methods for notifying and starting multi user MIMO (multi input multi output) and apparatus

Abstract

The invention discloses methods for notifying and starting multi user MIMO (multi input multi output) and an apparatus in a state transition process. In the methods, before notifying a terminal to transfer to a CELL_PCH (cell paging channel) state, an RNC (radio network controller) sends an NBAP (node B application part) signaling carrying MU-MIMO (multi user multi input multi output) information through an Iub interface to notify a base station, simultaneously the NBAP signaling carries a dedicated identifier of the terminal so as to enable the base station to associate with the MU-MIMO information through the dedicated identifier, thus an MU-MIMO operation on a corresponding terminal is started, simultaneously a terminal side can start an MU-MIMO operation of the terminal according to maintained MU-MIMO information. By employing the methods and the apparatus in the invention, a problem that in the prior art, when the terminal transfers to the CELL_PCH state from other connection states, since the base station does not save the MU-MIMO information of the terminal, thus MU-MIMO of a user can not be started when the terminal transfers to a suitable state of MU-MIMO from the CELL_PCH state again can be solved.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for starting multi-user MIMO. Background technique [0002] For the UTRAN (Global System for Mobile Communications Terrestrial Radio Access Network) system, the MU-MIMO (Multi User Multi Input Multi Output) feature was introduced in 3GPP Release 10. The MU-MIMO technology improves spectrum utilization efficiency by allowing multiple terminals to share the same channelization code and using different midamble shift technologies. Starting the MU-MIMO feature needs to start based on the HS-DSCH (High-Speed ​​Downlink Shared Channel, high-speed downlink shared channel) and E-DCH (Enhanced Dedicated Channel, enhanced dedicated channel), that is to say, starting MU-MIMO After the operation, the base station schedules the terminal to send or Receive data. The control channel format used in MU-MIMO operation is different from the control channel used...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is to provide a method and device for starting multi-user MIMO to solve the problem in the prior art when the terminal transfers from other connection states to the CELL_PCH state , because the base station does not save the multi-user MIMO information of the terminal, and thus cannot start the multi-user MIMO of the user when the terminal changes from the CELL_PCH state to the multi-user MIMO applicable state again, for this reason, the embodiment of the present invention adopts the following technical solution :

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