UMTS Features Comparison between Soft Handover and Hard Handover

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Armetta   钻石会员    发表于 2014-5-30 22:50:49   最新回复:2014-06-01 17:23:34

Item

Soft Handover (Softer Handover)

Hard Handover

Number of radio links in the activate set

Several

One

Interruption during handover

No

Yes

Frequencies in the cells before and after handover

Intra-frequency

Intra-frequency

Inter-frequency or

Inter-RAT

Handover gain

Maximum-ratio combining or selective combining which can reduce the impact of fading and transmission power of the UE.

None

Disadvantage

Occupies more resources.

Problems occur when the power of soft handover cells is unbalanced.

Call drop ratio is relatively higher

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AY   银牌会员    发表于 2014-6-1 14:57:04

ok
hhaider   小试牛刀    发表于 2014-6-1 17:23:34

Isnt call retention a gain of HHO
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