Rate control method and apparatus for data packet transmission
AssigneeNEC Corporation
InventorsJinsock Lee, Kojiro Hamabe
Life of this patent
Estimating the term…
Loading patent…
AssigneeNEC Corporation
InventorsJinsock Lee, Kojiro Hamabe
Estimating the term…
Base stations control the transmission rate that is used by UE (user equipment) to forward them information. A UE periodically forwards a rate request to a base station if the UE needs to have its data transmission rate to the base station increased or decreased, and the base station responds with a rate command. An error can occur in the transmission of the rate command, such that a rate Rnb transmitted by the base station and detected by the UE as Rue may not match. Various schemes are proposed for reducing and correcting such transmission errors. A first scheme involves periodically resetting the transmission rate of the base station and UE with a reference rate. Second to fourth schemes involve periodically comparing the transmission rates of the base station and UE, and replacing the rate of the UE if they differ. A fifth scheme involves a filtering of the feedback command in order to reduce the impact of error propagation. A sixth scheme, which may be used separately or in conjunction with any of the foregoing schemes, involves adjusting a power offset with a repetition factor. All of the schemes are modified during a soft handover of the UE from the base station to a new base station.
User equipment in a communication system comprising a base station, the user equipment comprising:
A base station in a communication system comprising user equipment, the base station comprising:
A communication system comprising:
A method for a communication system comprising a base station and user equipment, the method comprising:
User equipment in a communication system comprising a base station, the user equipment comprising:
A base station in a communication system comprising user equipment, the base station comprising:
A communication system comprising:
Dependencies are inferred from the claim text.