Does any one know about this huawei MML command (SET HSDPAFLOWCTRLPARA:)

[deknoi55]

Does any one know about this huawei MML command
Command: SET HSDPAFLOWCTRLPARA:
Parameter: SWITCH=STATIC_BW_SHAPING;
I don't know how to use ( but I think that's improve BW ) I want to know cabinet, subract,slot, port type, need to change for that.




Thank you .

[tukangoptim]

hi deknoi, it will not impact anything unless congestion occured...

[tukangoptim]

hi deknoi, it will not impact anything unless congestion occured...

and jitter.... :)

[srilasitha]

Configuring HSDPA Flow Control
This section describes how to activate, verify, and deactivate the optional feature WRFD-01061010 HSDPA Flow Control.

Prerequisites
•Dependency on Hardware
■None
•Dependency on Other Features
■The configurations of the features on which this feature depends are complete. This feature depends on the feature WRFD-010610 HSDPA Introduction Package.
•License
■The license is activated.
Context
For each MAC-hs queue, flow control calculates the pre-allocated Iub bandwidth based on the Uu transmission rate and the amount of data buffered in the NodeB. The Uu transmission rate of the MAC-hs queue is determined by the scheduling algorithm. For each MAC-hs queue, if the Iub transmission rate is higher than the Uu transmission rate, the data packets are buffered. Too much data buffered in the NodeB leads to transmission delay and even packet loss. Therefore, each MAC-hs queue should not have too much data buffered in the NodeB. On the other hand, it should keep a certain amount of data to avoid wasting the Uu resources due to no data to transmit.

The flow control procedure is as follows:
1.The NodeB measures the buffered data amount of each MAC-hs queue and the average Uu transmission rate.
2.The NodeB estimates the buffering time based on the measurements.
3.The NodeB adjusts the Iub bandwidth pre-allocated to the MAC-hs queue.
Procedure
•Activation Procedure
1.Run the NodeB MML command SET HSDPAFLOWCTRLPARA to set the parameter Flow Control Switch to trigger the NodeB HSDPA flow control function.

There are three types of flow control algorithms as follows:

•When the Flow Control Switch is set to STATIC_BW_SHAPING, the NodeB does not adjust the available bandwidth for HSDPA users based on the delay and packet loss condition on the Iub interface. Then, subtracting Iub bandwidth used by R99 from Iub bandwidth configured, the NodeB performs Iub shaping and distributes flow to HSDPA users.
•When the Flow Control Switch is set to DYNAMIC_BW_SHAPING, the NodeB adjusts the available bandwidth for HSDPA users based on the delay and packet loss condition on the Iub interface. Then, considering the rate on the air interface, the NodeB performs Iub shaping and distributes flow to HSDPA users.
•When the Flow Control Switch is set to NO_BW_SHAPING, the NodeB does not adjust the bandwidth based on the delay and packet loss condition on the Iub interface. The NodeB reports the conditions on the air interface to the RNC, and then the RNC performs bandwidth allocation.
•When the Flow Control Switch is set to BW_SHAPING_ONOFF_TOGGLE, the flow control policy for the ports of the NodeB is either DYNAMIC_BW_SHAPING or NO_BW_SHAPING in accordance with the congestion detection mechanism of the NodeB. This flow control algorithm is recommended.

•Verification Procedure
1.Create UL Throughput Bandwidth and DL Throughput Bandwidth tasks in the LMT.
2.UE1 accesses the network and make a PS service and record the throughput of the UE1.

Expected result:

The throughput of the UE1 is about 2Mbps and keep stable.


3.UE2 accesses the network and make a download service and record the throughput of the two UEs.

Expected result:

The throughput of UE1 is degraded. The throughput of the two UEs is stable. And the proportion of the two UEs' throughput is about 1:1.


•Deactivation Procedure

You can choose one of the other flow control algorithms to deactivate the current algorithms.


Example
//Activation Procedure
SET HSDPAFLOWCTRLPARA: SRN=0, SN=6, BEAR=ATM, SBT=BASE_BOARD, PT=IMA, PN=0, SWITCH= BW_SHAPING_ONOFF_TOGGLE, TD=2, DR=1,ITM=TERRESTRIAL