Method and apparatus for scheduling uplink data transmission for mobile station in soft handover region in a mobile communication system
First Claim
1. A method of scheduling uplink data transmission in a user equipment (UE) in a mobile communication system supporting an uplink packet data service, the method comprising the steps of:
- receiving, during a communication with a serving Node B and at least one non-serving Node B at a soft handover, a dedicated scheduling grant from the serving Node B by dedicated scheduling and a common scheduling grant from the at least one non-serving Node B;
controlling an uplink data rate not to exceed a previous uplink data rate during a predetermined validity duration, if the common scheduling grant indicates a rate-down; and
transmitting uplink data at the controlled uplink data rate.
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Abstract
A method and apparatus for scheduling uplink data transmission for a UE in a mobile communication system supporting an uplink packet data service are provided. A serving Node B and at least one non-serving Node B are included in an active set of a UE located in a soft handover region. The UE receives a dedicated scheduling grant from the serving Node B by dedicated scheduling and a common scheduling grant from the at least one non-serving Node B, controls an uplink data rate not to exceed a previous uplink data rate during a predetermined validity duration, if the common scheduling grant indicates a rate-down, and transmits uplink data at the controlled uplink data rate.
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Citations
17 Claims
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1. A method of scheduling uplink data transmission in a user equipment (UE) in a mobile communication system supporting an uplink packet data service, the method comprising the steps of:
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receiving, during a communication with a serving Node B and at least one non-serving Node B at a soft handover, a dedicated scheduling grant from the serving Node B by dedicated scheduling and a common scheduling grant from the at least one non-serving Node B;
controlling an uplink data rate not to exceed a previous uplink data rate during a predetermined validity duration, if the common scheduling grant indicates a rate-down; and
transmitting uplink data at the controlled uplink data rate. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of scheduling uplink data transmission for a user equipment (UE) in a Node B in a mobile communication system supporting an uplink packet data service, the method comprising the steps of:
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transmitting a dedicated scheduling grant to a UE located in a soft handover region by a dedicated scheduling;
receiving uplink data from the UE, after transmitting the dedicated scheduling grant;
controlling an uplink data rate not to exceed a previous uplink data rate during a predetermined validity duration, if the data rate of the received uplink data is lower than a data rate indicated by the dedicated scheduling grant; and
transmitting a dedicated scheduling grant indicating the controlled uplink data rate to the UE. - View Dependent Claims (9, 10)
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11. An apparatus for scheduling uplink data transmission for a user equipment (UE) in a mobile communication system supporting an uplink packet data service, the apparatus comprising:
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a serving Node B and at least one non-serving Node B associated with a soft handover region; and
a UE located in the soft handover region, for receiving a dedicated scheduling grant from the serving Node B by a dedicated scheduling and a common scheduling grant from the at least one non-serving Node B, controlling an uplink data rate not to exceed a previous uplink data rate during a predetermined validity duration, if the common scheduling grant indicates a rate-down, and transmitting uplink data at the controlled uplink data rate. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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Specification