Method for adaptive scanning in a wireless network and a wireless network
AssigneeAlcatel Lucent
InventorsVan Minh Nguyen, Olivier Marce
Life of this patent
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Abstract
A method for scanning in a wireless network 3 comprises determining attributes for an on-going service of a mobile station, MS 5 and allocating scanning intervals for the MS depending on the determined attributes. The attributes for the ongoing service may include at least one of: type of service; and quality of service requirements. In one method, scanning intervals for the MS are allocated by a base station 4 also depending on the size of the neighbor cell list. The wireless network may, for example, be a WiMAX network.
Claims10
A method for adaptive scanning in a wireless network comprising:
- determining attributes for an on-going service of a mobile station, MS;
- and
- allocating scanning intervals for the MS depending on the determined attributes and on the size of a neighbor cell list for scanning by the MS;
- wherein the network is implemented in accordance with a broadband mobile standard;
- and
- wherein the time allocation is selected such that ratio R of listening interval, L, to scanning interval, S, over the scan duration Dmax is limited within a range [Rmin, Rmax] such that:
- if:
- (Rmax+1) ×S <= Dmax
- then:
- L = Rmax × S
- else if:
- (Rmin+1)×S <= Dmax
- then:
- L = Dmax − S
- else:
- L = Rmin × S.
A wireless network comprising a plurality of base stations, and comprising:
- an adaptive time allocation module operative to allocate scanning intervals for a mobile station, MS, depending on determined attributes for an on-going service of a mobile station, MS, and depending on a size of a neighbor cell list;
- wherein a time allocation is selected such that ratio R of listening interval, L, to scanning interval, S, over the scan duration Dmax is limited within a range [Rmin, Rmax] such that:
- if:
- (Rmax+1) ×S <= Dmax
- then:
- L = Rmax × S
- else if:
- (Rmin+1)×S <= Dmax
- then:
- L = Dmax − S
- else:
- L = Rmin × S.
Dependencies are inferred from the claim text.