Mobile Station Control on the Traffic Channel State

2.6.4 Mobile Station Control on the Traffic Channel State

As illustrated in Figure 2.6.4-1, the Mobile Station Control on the Traffic Channel State consists of the following substates:

• Traffic Channel Initialization Substate - In this substate, the mobile station verifies that it can receive the Forward Traffic Channel and begins transmitting on the Reverse Traffic Channel.

• Traffic Channel Substate - In this substate, the mobile station exchanges Traffic Channel frames with the base station in accordance with the current service configuration. The mobile station may perform the gating operation of Reverse Pilot Channel. While in this substate, one or more Call Control instances can be activated (see 2.6.10).

• Release Substate - In this substate, the mobile station disconnects the calls and the physical channels.


Figure 2.6.4-1. Mobile Station Control on the Traffic Channel State

2.6.4.1 Special Functions and Actions

2.6.4.1.1 Forward Traffic Channel Power Control

To support Forward Traffic Channel power control, the mobile station reports frame error rate statistics to the base station. If the base station enables periodic reporting, the mobile station reports frame error rate statistics at specified intervals. If the base station enables threshold reporting, the mobile station reports frame error rate statistics when the frame error rate reaches a specified threshold.²⁸

The mobile station shall maintain the following frame counters:

• A counter (TOT_FRAMES_s) for the total number of frames received on the Forward Fundamental Channel.

• A counter (BAD_FRAMES_s) for the number of bad frames detected on the Forward Fundamental Channel.

• A counter (DCCH_TOT_FRAMES_s) for the total number of frames received on the Forward Dedicated Control Channel, when the Dedicated Control Channel is assigned.

• A counter (DCCH_BAD_FRAMES_s) for the total number of bad frames received on the Forward Dedicated Control Channel, when the Dedicated Control Channel is assigned.

The mobile station shall maintain the following counters for each Supplemental Channel assigned, if FOR_SCH_FER_REP_s is equal to ‘1’:

• A counter (SCH_TOT_FRAMES_s) for the number of frames received on the assigned Supplemental Channel.

• A counter (SCH_BAD_FRAMES_s) for the number of bad frames received on the assigned Supplemental Channel.

The mobile station shall increment the counter by 1 at every 20 ms interval if a 20ms frame or at least one 5ms frame is received from the Forward Fundamental Channel or Dedicated Control Channel:

• If the received frame is from the Fundamental Channel, the mobile station shall perform the following:

• 
  Increment TOT_FRAMES_s by 1.
  
• 
  If the received 20ms frame is bad or one of the 5ms frames is bad, the mobile station shall increment BAD_FRAMES_s by 1.
  

• 
  Increment DCCH_TOT_FRAMES_s by 1.
  
• 
  If the received 20ms frame is bad or one of the 5ms frames is bad, the mobile station shall increment DCCH_BAD_FRAMES_s by 1.
  

• 
  PWR_THRESH_ENABLE_s is equal to ‘1’ and if one of the following conditions is true:
  

+ If the mobile station is to perform the primary inner loop estimation on the received Forward Dedicated Control Channel [FPC_PRI_CHAN_s = ‘1’], and DCCH_BAD_FRAMES_s is equal to PWR_REP_THRESH_s.

or

• 
  PWR_PERIOD_ENABLE_s is equal to ‘1’ and if one of the following conditions is true:
  

+ If the mobile station is to perform the primary inner loop estimation on the received Forward Dedicated Control Channel [FPC_PRI_CHAN_s = ‘1’], and DCCH_TOT_FRAMES_s is equal to (2^{(PWR_REP_FRAMESs/2}5),

then the mobile station shall send a Power Measurement Report Message to the base station. The mobile station should send the Power Measurement Report Message in unassured mode. After sending a Power Measurement Report Message, the mobile station shall set TOT_FRAMES_s, BAD_FRAMES_s to zero, and if the Dedicated Control Channel is assigned, shall set DCCH_TOT_FRAMES_s and DCCH_BAD_FRAMES_s to zero. The mobile station shall not increment the counters for a period of PWR_REP_DELAY_s 4 frames following the first transmission of the message.

• If FPC_PRI_CHAN_s is equal to ‘0’ and TOT_FRAMES_s is equal to (2^{(PWR_REP_FRAMESs/2)}5)the mobile station shall perform the following:

• 
  Set TOT_FRAMES_s and BAD_FRAMES_s to zero_.
  
• 
  Set DCCH_TOT_FRAMES_s and DCCH_BAD_FRAMES_s to zero, if the Dedicated Control Channel is assigned.
  

For each received frame from an assigned Supplemental Channel, the mobile station shall perform the following, if FOR_SCH_FER_REP_s is equal to ‘1’:

• Increment SCH_TOT_FRAMES_s by 1.

• If the received frame is bad, increment SCH_BAD_FRAMES_s by 1.

At the end of a burst on each assigned Supplemental Channel, if FOR_SCH_FER_REP_s is equal to ‘1’, the mobile station shall report the total number of frames received on this Supplemental Channel (SCH_TOT_FRAMES_s) and the bad frames detected (SCH_BAD_FRAMES_s) with the fields SCH_PWR_MEAS_FRAMES and SCH_ERRORS_DETECTED in the Power Measurement Report Message respectively. After sending the Power Measurement Report Message for the Supplemental Channel, the mobile station shall set SCH_TOTAL_FRAMES_s and SCH_BAD_FRAMES_s of the reported SCH to zero.

If both Forward Fundamental Channel and the Forward Dedicated Control Channel are assigned to the mobile station, the mobile station shall perform the following:

• The mobile station shall set FPC_DELTA_SETPT_s to (FPC_FCH_CURR_SETPT_s – FPC_DCCH_CURR_SETPT_s).

• For each received frame, if |FPC_FCH_CURR_SETPT_s – FPC_DCCH_CURR_SETPT_s – FPC_DELTA_SETPT_s| is equal to or greater than its assigned threshold FPC_SETPT_THRESH_s, the mobile station shall send the Outer Loop Report Message requiring acknowledgment to the base station, and the mobile station shall then set FPC_DELTA_SETPT_s to (FPC_FCH_CURR_SETPT_s – FPC_DCCH_CURR_SETPT_s).

For each of the supplemental channels assigned to the mobile station and FPC_MODE_s is set to ‘000’, the mobile station shall perform the following:

• The mobile station shall set FPC_DELTA_SCH_SETPT_s to (FPC_FCH_CURR_SETPT_s – FPC_SCH_CURR_SETPT_s) if FPC_PRI_CHAN_s is equal to ‘0’.

• The mobile station shall set FPC_DELTA_SCH_SETPT_s to (FPC_DCCH_CURR_SETPT_s – FPC_SCH_CURR_SETPT_s) if FPC_PRI_CHAN_s is equal to ‘1’.

• For each received frame, if FPC_PRI_CHAN_s is equal to ‘0’ and |FPC_FCH_CURR_SETPT_s – FPC_SCH_CURR_SETPT_s – FPC_DELTA_SCH_SETPT_s| is equal to or greater than its assigned threshold FPC_SETPT_THRESH_SCH_s, the mobile station shall send the Outer Loop Report Message in assured mode, and the mobile station shall then set FPC_DELTA_SCH_SETPT_s to (FPC_FCH_CURR_SETPT_s – FPC_SCH_CURR_SETPT_s).

• For each received frame, if FPC_PRI_CHAN_s is equal to ‘1’ and |FPC_DCCH_CURR_SETPT_s – FPC_SCH_CURR_SETPT_s – FPC_DELTA_SCH_SETPT_s| is equal to or greater than its assigned threshold FPC_SETPT_THRESH_SCH_s, the mobile station shall send the Outer Loop Report Message in assured mode, and the mobile station shall then set FPC_DELTA_SCH_SETPT_s to (FPC_DCCH_CURR_SETPT_s – FPC_SCH_CURR_SETPT_s).

If the Supplemental channels are assigned to the mobile station and FPC_MODE_s is set to ‘001’, ‘010’, ‘101’, or ‘110’, for each additional Forward Supplemental Channel other than the Forward Supplemental Channel specified by FPC_SEC_CHAN_s, the mobile station shall perform the following:

• The mobile station shall set FPC_DELTA_SCH_SETPT_s to (FPC_SCH_CURR_SETPT_s[FPC_SEC_CHAN_s] – FPC_SCH_CURR_SETPT_s) for the Supplemental Channel.

• For each received frame, if |FPC_SCH_CURR_SETPT_s[FPC_SEC_CHAN_s] – FPC_SCH_CURR_SETPT_s – FPC_DELTA_SCH_SETPT_s| is equal to or greater than its assigned threshold FPC_SETPT_THRESH_SCH_s, the mobile station shall send the Outer Loop Report Message in assured mode, and the mobile station shall then set FPC_DELTA_SCH_SETPT_s to (FPC_SCH_CURR_SETPT_s[FPC_SEC_CHAN_s] – FPC_SCH_CURR_SETPT_s).