HSDPA Handover

[xcatas]

Dear friend,

Anyone could share more about handover in HSDPA? (events, parameters, performance, etc)

Any help will be appreciated.
Thank you very much.

BR//

[_lisi4king]

Dear friend,

Anyone could share more about handover in HSDPA? (events, parameters, performance, etc)

Any help will be appreciated.
Thank you very much.

BR//

About perfomance:

VS.HSDPA.SHO.ServCellChg.AttOut
VS.HSDPA.SHO.ServCellChg.SuccOut

[rishi]

Dear friend,

Anyone could share more about handover in HSDPA? (events, parameters, performance, etc)

Any help will be appreciated.
Thank you very much.

BR//

From the nature of the 3GPP R5, the HSPDA does not
support soft handover when UEs move across the
multiple Node-Bs so that it may cause a severe
throughput degradation and a high handover latency .
Typical VoIP applications require that minimum interarrival time (IAT) between every two incoming packets
should be less than 20 msec. Since the latency of the hard
handover is about 300׽500 msec, it cannot guarantee the
requirement of the VoIP applications. Therefore, in this
paper, we propose a new soft handover mechanism for
HSDPA to reduce the handover latency under 20 msec.
The proposed mechanism utilizes DCH as a
supplementary channel to support soft handover. When
an UE performs an inter Node-B handover, from a
serving Node-B to a drift Node-B, utilizing the DCH
enable the UE to continue its data reception gracefully
through the HS-DSCH. The UE establishes a DCH and
continues receiving data from the serving Node-B by
switching the HSDSCH into the DCH. Then, the UE
performs soft handover destined to a drift Node-B by
using general DCH handover mechanism, and changes
back the current data reception to the HS-DSCH if the
drift Node-B supports the HSPDA. We evaluate our
proposed soft handover mechanism with ns-2 simulator to
compare the performance with existing hard handover
mechanism in terms of handover latency. In
addition, we show that the proposed mechanism
minimizes the handover latency to guarantee the
requirement of VoIP applications, less than 20 msec


Events Used are 1E and 1F

[agenov]

Dear friend,

Anyone could share more about handover in HSDPA? (events, parameters, performance, etc)

Any help will be appreciated.
Thank you very much.

BR//

More info will be Ok like for which vendor you are asking for and etc...

BR

[boring]

Event 1d is typically used for HSDPA mobility (bue under specific circmstances other events could result in HSDPA mobility as well).

if you tell us which vendor that would help a lot...

[dk2000]

Which vendor are you using?

[Junio]

Hi all
Can you help me to reduce low HO success rate3G to 2G handover success rate_HSUPA = 18,18%)

In general all handover 3G to 2G is very low

Thanks for your help .

[auto_art]

From the nature of the 3GPP R5, the HSPDA does not
support soft handover when UEs move across the
multiple Node-Bs so that it may cause a severe
throughput degradation and a high handover latency .
Typical VoIP applications require that minimum interarrival time (IAT) between every two incoming packets
should be less than 20 msec. Since the latency of the hard
handover is about 300׽500 msec, it cannot guarantee the
requirement of the VoIP applications. Therefore, in this
paper, we propose a new soft handover mechanism for
HSDPA to reduce the handover latency under 20 msec.
The proposed mechanism utilizes DCH as a
supplementary channel to support soft handover. When
an UE performs an inter Node-B handover, from a
serving Node-B to a drift Node-B, utilizing the DCH
enable the UE to continue its data reception gracefully
through the HS-DSCH. The UE establishes a DCH and
continues receiving data from the serving Node-B by
switching the HSDSCH into the DCH. Then, the UE
performs soft handover destined to a drift Node-B by
using general DCH handover mechanism, and changes
back the current data reception to the HS-DSCH if the
drift Node-B supports the HSPDA. We evaluate our
proposed soft handover mechanism with ns-2 simulator to
compare the performance with existing hard handover
mechanism in terms of handover latency. In
addition, we show that the proposed mechanism
minimizes the handover latency to guarantee the
requirement of VoIP applications, less than 20 msec


Events Used are 1E and 1F

this is nice info..!

[twenty8]

Take note that HSDPA is a hard handover and not a SHO like R99. Its referred to as serving cell change.

[zeezzoo]

Take note that HSDPA is a hard handover and not a SHO like R99. Its referred to as serving cell change.

nope . HSDPA supports soft handover also .

but i have a question in mind :
let's assume that I'm a UE that have 3 radio links in the active set ie : in soft handover state . what are the uplink & downlink physical channels that the UE has in case R99 & HSDPA ?

is it difference when the UE in softer handover state ?