Interference identification and mitigation in wireless communication
AssigneeTelefonaktiebolaget LM Ericsson (publ)
InventorsAlireza Nejatian, Krister Sundberg
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Abstract
Interference in a wireless communication system receiver, such as at a base station, is identified based on monitoring automatic gain control (AGC) events. AGC statistics in combination with base band processing are used to identify the interference. Performance degradation is evaluated, and interference mitigation solutions are proposed based on the identified interference. Mitigation solutions include IRC, scheduling restrictions, and filter modifications including replacement of filters.
Claims29
A method performed at one or more nodes of a wireless communication system to identify and mitigate interferences, the method comprising:
- monitoring automatic gain control (AGC) events occurring at a base station due to incoming signals over a predetermined time duration, the incoming signals comprising wireless transmissions from one or more base station(s) or one or more user equipment(s);
- generating AGC statistics of the AGC events in combination with a base band (BB) processing of a radio access technology (RAT) operating in the base station;
- identifying an interference due to the wireless transmissions from the base stations or the user equipments(s) based on the AGC statistics;
- evaluating a performance degradation at the base station due to the identified interference;
- and
- proposing one or more interference mitigation solutions based on the performance degradation,
- wherein the AGC statistics include statistics of AGC triggered states and AGC non-triggered states.
An interference mitigation entity of a wireless communication system arranged to identify and mitigate interferences, the interference mitigation entity comprising:
- an AGC monitoring unit arranged to monitor automatic gain control (AGC) events occurring at a base station due to incoming signals over a predetermined time duration, the incoming signals comprising wireless transmissions from one or more base station(s) or one or more user equipment(s);
- an AGC statistics generating unit arranged to generate AGC statistics of the AGC events in combination with a base band (BB) processing of a radio access technology (RAT) operating in the base station;
- an interference identifying unit arranged to identify an interference due to the wireless transmissions from the base station(s) or the user equipment(s) based on the AGC statistics;
- a performance evaluating unit arranged to evaluate a performance degradation at the base station due to the identified interference;
- and
- a mitigation proposing unit arranged to propose one or more interference mitigation solutions based on the performance degradation,
- wherein the AGC statistics include statistics of AGC triggered states and AGC non-triggered states.
A non-transitory computer storage medium storing therein programming instructions, which when executed by a computer, the computer executes a method to identify and mitigate interferences occurring at a base station of a wireless communication system, the method comprising:
- monitoring automatic gain control (AGC) events occurring at the base station due to incoming signals over a predetermined time duration, the incoming signals comprising wireless transmissions from one or more base station(s) or one or more user equipment(s);
- generating AGC statistics of the AGC events in combination with a base band (BB) processing of a radio access technology (RAT) operating in the base station;
- identifying an interference due to the wireless transmissions from the base station(s) or the user equipment(s) based on the AGC statistics;
- evaluating a performance degradation at the base station due to the identified interference;
- and
- proposing one or more interference mitigation solutions based on the performance degradation,
- wherein the AGC statistics include statistics of AGC triggered states and AGC non-triggered states.
Dependencies are inferred from the claim text.