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(11) | EP 2 337 397 A8 |
(12) | CORRECTED EUROPEAN PATENT APPLICATION |
Note: Bibliography reflects the latest situation |
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(54) | Method and apparatus for handover between ieee 802.16e and 802.16m systems |
(57) Methods for a mobile station to handover between IEEE 802.16e and 802.16m systems
are provided. The mobile station is served by an IEEE 802.16e-only base station or
an IEEE 802.16e zone of a 16e/16m-conexistence base station. In a zone-switch based
handover procedure, the mobile station first performs an IEEE 802.16e legacy handover
procedure such that the mobile station handovers from the serving base station to
an IEEE 802.16e zone of a target base station. The mobile station then performs a
zone-switch procedure such that the mobile station switches from the IEEE 802.16e
zone to an IEEE 802.16m zone of the target base station. In a direct handover procedure,
the mobile station performs an IEEE 802.16m handover procedure such that the mobile
station handovers from the serving base station to the IEEE 802.16m zone of the target
base station directly.
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