ha3_dch_hsdpa_switch_req_s

            /************************ MESSAGE DEFINITION *********************
           *
           *  DEFINITION ID:  @(#)SID: MED0AAAF.SDT [phone]
           *
           *  CONTEXT:        HA3 hand process sends this message to MCC to
           *                  request switch from DCH to HS-DSCH
           *
           *  GROUP ID:       0x00000
           *
           *  REMARKS:        HA3-d -> RRC-mcc
           */
         
          SIGNAL ha3_dch_hsdpa_switch_req_s = 0xaaaf
          (
            msg     ;
          );
         
          /************************ FIELD DESCRIPTIONS *********************
           *
           * All data information is described in the datatype definition.
           *
           */

3346 DAB1 intra_freq_meas_report_s Per CPICH EcNo, -4.5dB(201), -6dB(204)Cell:201 EcN0: 40 ** Cell 204 EcN0: 37 rrcprb 200E --> ha3prb 000D 11:31:22.76  00:01:43.39  67 744F 003A 0000
3347 DAB1 intra_freq_meas_report_s Per CPICH EcNo, -4.5dB(201), -6dB(204)Cell:201 EcN0: 40 ** Cell 204 EcN0: 37 ha3prb 000D <-- rrcprb 200E 11:31:22.76  00:01:43.39  67 744F 003A 0000
3348 AAAF ha3_dch_hsdpa_switch_req_s  ha3prb 000D --> uerprb 000D 11:31:22.76  00:01:43.39  137 744F 003A 0000

HA3在收到measurement 的报告口，发现应该将dch  channle type switch to HSDPA了， 由HA3 给UER发送这条消息。