Hybrid coordination function (HCF) access through tiered contention and overlapped wireless cell mitigation
First Claim
1. A method for reducing an interference between overlapping first and second wireless cells in a medium, each of the first and second wireless cells including a respective plurality of member stations and an overlapped station occupying both the first and second wireless cells, the method comprising:
- receiving, by the overlapped station in the first wireless cell, from a first access point station a beacon packet containing a value representing an inter-cell contention-free period, wherein the value is associated with an accessing order in the medium for member stations in the first and second wireless cells; and
forwarding, by the overlapped station in the first wireless cell, the value to a second access point station of the member stations in the second wireless cell.
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Abstract
A method and system reduce interference between overlapping first and second wireless LAN cells in a medium. Each cell includes a respective plurality of member stations and there is at least one overlapped station occupying both cells. An inter-cell contention-free period value is assigned to a first access point station in the first cell, associated with an accessing order in the medium for member stations in the first and second cells. The access point transmits a beacon packet containing the inter-cell contention-free period value, which is intercepted at the overlapped station. The overlapped station forwards the inter-cell contention-free period value to member stations in the second cell. A second access point in the second cell can then delay transmissions by member stations in the second cell until after the inter-cell contention-free period expires.
140 Citations
20 Claims
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1. A method for reducing an interference between overlapping first and second wireless cells in a medium, each of the first and second wireless cells including a respective plurality of member stations and an overlapped station occupying both the first and second wireless cells, the method comprising:
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receiving, by the overlapped station in the first wireless cell, from a first access point station a beacon packet containing a value representing an inter-cell contention-free period, wherein the value is associated with an accessing order in the medium for member stations in the first and second wireless cells; and forwarding, by the overlapped station in the first wireless cell, the value to a second access point station of the member stations in the second wireless cell. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A wireless communications system for reducing an interference between overlapping first and second wireless cells in a medium, each wireless cell including a respective plurality of member stations and an overlapped station occupying both the first and second wireless cells, the wireless communications system comprising:
an overlapped station in the first wireless cell for receiving from a first access point station a beacon packet containing a value representing an inter-cell contention-free period, wherein the value is associated with an accessing order in the medium for member stations in the first and second wireless cells, and for forwarding, by the overlapped station in the first wireless cell, the value to a second access point station of the member stations in the second wireless cell.
Specification