Huawei Parameter

BSPAMFRAMS: Multi-Frames in a Cycle on the Paging CH (số Paging sub channel cấu hình)

Command: LST GCELLIDLEBASIC Meaning: Number of multiframes in a cycle on a paging sub-channel. In fact, this parameter specifies the number of paging sub-channels that a paging channel in a cell is divided into.

In an actual network, an MS does not listen to other paging sub-channels but its belonging paging sub-channel only. Refer to GSM Rec. 05.02 and GSM Rec. 05.08. The larger the value of this parameter, the more the number of the paging sub-channels in a cell, and the fewer the number of the users belonging to each paging sub-channel. In this case, the mean uptime of the MS battery can be prolonged. Refer to the computing mode of paging group in GSM 05.02 of GSM Standards. The larger the value of this parameter, however, the larger the time delay of a paging message in a space segment. Thus, the average service performance of the system lowers. Based on the principle of ensuring that overload does not occur to paging channels, you must set this parameter to a value as small as possible. You must regularly measure the overload conditions of the paging channels in a running network and accordingly adjust the value of this parameter properly. A paging message in a location area must be sent in all the cells within this location area at the same time. Therefore, the capacity of a paging channel of each cell in a location area must be the same or nearly the same. The capacity refers to the calculated number of paging sub-channels of each cell.

GUI Value Range: 2_M_PERIOD(2 Multiframe Period), 3_M_PERIOD(3 Multiframe Period), 4_M_PERIOD(4 Multiframe Period), 5_M_PERIOD(5 Multiframe Period), 6_M_PERIOD(6 Multiframe Period), 7_M_PERIOD(7 Multiframe Period), 8_M_PERIOD(8 Multiframe Period), 9_M_PERIOD(9 Multiframe Period)

Unit: 470ms

Actual Value Range: 940~4230

MML Default Value: None

Recommended Value: 2_M_PERIOD

Parameter Relationship: None

Service Interrupted After Modification : No (No impact on the UE in idle mode)

Impact on Network Performance: If this parameter is set to a greater value, the number of paging subchannels in a cell increases and the number of MSs on each paging subchannel decreases. This can prolong the average service life of MS batteries but increase the delay of paging messages and degrade the system performance.

BSAGBLKSRES: CCCH Blocks Reserved for AGCH (chỉ ra số CCCH message blocks dùng cho AGCH)

Command: LST GCELLIDLEBASIC Meaning: BS-AG-BLKS-RES, indicating the number of the CCCH message blocks reserved for the AGCH. After the CCCHs are configured, the value of this parameter indicates the actual seizure rates of the AGCHs and the PCHs over the CCCHs.

GUI Value Range: 0~7

Unit: None



Recommended Value: 1



Impact on Network Performance: The setting of this parameter may affect the MS paging response and performance of the system. A greater value may decrease the number of paging blocks, paging capacity, and paging success rate.

Tips: When the channel combination of the cell is fixed, the parameter AG adjusts the ratio of AGCH and PCH in CCCH. When the PCH is idle, it can send immediate assignment messages. The AGCH does not transmit paging messages. Equipment operators can balance AGCH and PCH by adjusting AG, with the following principles.

The principle for AG value is that based on no overload of AGCH, you must reduce the parameter to shorten the time for MS to respond to paging, and to improve system service performance. When the immediate assignment messages are superior to paging messages to be sent, configure AG to 0.

The value of AG is recommended as follows:

AG is 1 when the CCCH and SDCCH share a physical channel. AG is 2 or 3 in other situations.

In network operation, take statistics of overload situations of AGCH and adjust AG accordingly. By default the immediate assignment messages are superior to paging messages to be sent in the network, so you need not reserve a channel for immediate assignment messages. In this situation, configure AG to 0.

RXMIN: Minimum Access RXLEV

Minimum Access RXLEV

Meaning: Minimum received signal level of the MS. This level is reported in the system information. This parameter specifies the minimum receive level of an MS to access the BSS. For details. see GSM Rec. 05.08. The value of this parameter ranges from 0 to 63 (corresponding to -110 dBm to -47 dBm).

GUI Value Range: 0~63

Unit: dB



Recommended Value: 8



Impact on Network Performance: If this parameter is set to a greater value, the call drop rate decreases but the traffic volume and paging success rate are affected.

RLT: Radio Link Timeout

Radio Link Timeout

Meaning: Time for disconnecting a call when the MS fails to decode the SACCH. Once a dedicated channel is assigned to the MS, the counter S is enabled and the initial value is set to this parameter value.

Each time an SACCH message is not decoded, the counter S decreases by 1. Each time an SACCH message is correctly decoded, the counter S increases by 2. When the counter S is equal to 0, the downlink radio link is considered as failed.

Therefore, when the voice or data quality is degraded to an unacceptable situation and it cannot be improved through power control or channel handover, the connection is to be re-established or released.

GUI Value Range: 4_Times, 8_Times, 12_Times, 16_Times, 20_Times, 24_Times, 28_Times, 32_Times, 36_Times, 40_Times, 44_Times, 48_Times, 52_Times, 56_Times, 60_Times, 64_Times

Unit: 480ms



Recommended Value: 52_Times



Impact on Network Performance: If this parameter is set to a smaller value, the radio link is vulnerable to failure, thus call drops are likely to occur. If this parameter is set to a greater value, the MS may not release the connection for a long time, thus decreasing the resource usage. The parameter is valid in the downlink.

Recommended Value: In the areas where the traffic volume is low, such as rural areas, this parameter should range from 52 to 64.

Huawei Parameter

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