How to Plan MAIO and HSN – Download as Word Doc .doc), PDF File .pdf), Text File .txt) 8 OMO BSC GSM V9R11R12R13 Frequency Hopping. A mobile allocation index offset (MAIO) refers a time delay separating traffic channels. When a Thus, the MA Table, MAIO and the Hopping Sequence Number (HSN) completely configure a hopping sequence procedure GSM standard. View Test Prep – Frequency hopping from ECE at D A V College Cheeka. What is HSN and MAIO in GSM? – + February S M T W T F.

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Various scenarios are explained below: Enable Uplink DTX l. The main reason for this is we used entire band of 30 channels for BCCH earlier. If the network utilizes the RF hopping, the MA-lists have to be generated for each cell by the network planner. This reuse scheme is suitable for homogeneous network with minimum overlapping areas.

Mobile Allocation Index Offset

By using this site, you agree to the Terms of Use and Privacy Policy. The value of FHI varies between 0 to 3. But then interference from BCCH 48 must be considered. Timeslot 0 of BCCH will not hop. It was set automatically by the system. Bandra Causeway V2 3. The problem with this scheme is in peak hours there may be more hits.

FHI can be defined on a timeslot basis. The MA-list is automatically generated if the baseband hopping is used. What does Orthogonal means in Wireless Networks?

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This is very useful for interference averaging and to randomize the distribution of errors. Mahim Station V1 4.

X Like My Work Follow. Since there are 5 frequencies in each sector, as per definition of loading factor, there can be only 2 NBCCH carriers equipped on each sector. Never the data is transferred at KB. October Learn how and when to remove this template message. The interference will not be due to MAIO. Further details regarding FHI planning are discussed later in the document.

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HSN is set to 0 — This is the case of cyclic hopping. Following jsn were found to be degraded: This parameter gives the indication of hit-rate. Retrieved from ” https: From the drive results following are the areas maaio had shown Voice Quality problems. Using the MA table and the MAIO, the mobile station will hop in the exact sequence as the cell in dedicated mode to achieve frequency diversity.

So there is no option to use 32 in hopping otherwise it will be underutilised.

TEMS is one of gssm drive test tools that can be used for the purpose. BCCH Plan for the entire network and monitor for 1 week MA list is same for the cells of different sites — In this case HSN should be different for all such cells.


But sometimes intracell handover takes place without mobile or BTS radiating at full power. Our lowest rates for wholesale carriers with their own VoIP switch. Enable combined and non-combined multiframe. Hopping frequencies are divided in 3 groups.

The use of these sets is related to the orientation of the sectors, so that same set is not used on sectors looking at each other.

Addition of Site e. As a result of dynamic nature of the transmit frequency, broadband hybrid combining of the transmitters is necessary. Separate BCCH plan is required to be made for that period. Plan for 1 x 1 plan.

No problems found 5. However this can be used on a case to case basis.

Kaio failures after switchover to hopping. Separate FER plot should be taken to identify the change. This planning is very much similar to the conventional fixed frequency plan with lesser number of frequencies.

What is HSN and MAIO in GSM? – telecomHall

Premium quality termination for wholesale carriers with their own VoIP switch. This reduction may get compensated due to improvement in quality of hopping carriers improvement in TCH assignment success rate. In the following sectors wehave observed that the Idle Channel Interference was very high during some parts of tsm peak hour.

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