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US 2012/0058789 A1Published application
Probabilistic interference mitigation for wireless cellular networks
AssigneeIntel Corporation
InventorsGUOWANG MIAO, Nageen Himayat, Shilpa Talwar
Life of this patent
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Abstract
An interference mitigation system randomizes transmissions to cell-edge users by carefully controlling the probability of transmission to these users, thereby creating a virtual fractional frequency system that does not require extensive frequency management and coordination across the network. In some embodiments, the interference mitigation system identifies severely interfered links and reduces the probability of transmission on these links, with the result being a reduced probability of interference.
Claims17
A system, comprising:
- a serving base station comprising a co-channel interference avoidance medium access controller, the controller comprising transmission randomization capability;
- a feedback link between the serving base station and a subscriber station, wherein an interference report is received by the serving base station on the feedback link when an interference-to-carrier ratio exceeds a predetermined threshold;
- and
- an interference reporting link between the serving base station and a second base station, wherein the serving base station sends the interference report over the interference link to the second base station;
- wherein transmissions to the subscriber station are randomized based on a channel threshold for the subscriber station.
2 more elements
A method, comprising:
- receiving, by a serving base station, an indication of interference between a subscriber and a base station in a wireless neighborhood from the subscriber, wherein the subscriber, the base station, and the serving base station occupy a wireless neighborhood comprising a plurality of subscribers and a plurality of base stations;
- and
- randomizing, by the serving base station, transmissions to a link between the subscriber and the base station based on a channel threshold if an interference-to-carrier ratio of the link exceeds a predetermined threshold value.
A system, comprising:
- a subscriber station comprising a co-channel interference avoidance medium access controller;
- a link between the subscriber station and a base station, wherein the co-channel interference avoidance medium access controller of the subscriber station measures an interference-to-carrier ratio on the link;
- a feedback link between a serving base station and the subscriber station, wherein the subscriber station sends an interference report to the serving base station on the feedback link when the interference-to-carrier ratio exceeds a predetermined threshold;
- wherein transmissions to the subscriber station are randomized based on a channel threshold for the subscriber station.
1 more element
Dependencies are inferred from the claim text.