Method for data transmission during a handover in mobile communications system
First Claim
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1. A method of receiving uplink data in a mobile communications system, the method comprising:
- determining whether a handover for a terminal from a first base station to a second base station is required; and
transmitting an indication to an Access Gateway (AG) for allowing the AG to perform uplink data reordering when it is determined that the handover is required,wherein the first base station transmits any uplink data received from the terminal to the AG without considering an order sequence of the uplink data, andwherein the second base station transmits any uplink data received from the terminal to the AG without considering the order sequence of the uplink data.
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Abstract
In a wireless mobile communications system, a method of transmitting uplink data during a handover of a mobile terminal. When the mobile terminal changes its connection from a source base station to a target base station, either the source base station or the target base station transmits a reordering indication for performing a reordering process by the gateway while transmitting a received data unit from the mobile terminal to the gateway regardless of data unit sequence number, thereby optimizing data unit transmission efficiency.
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Citations
12 Claims
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1. A method of receiving uplink data in a mobile communications system, the method comprising:
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determining whether a handover for a terminal from a first base station to a second base station is required; and transmitting an indication to an Access Gateway (AG) for allowing the AG to perform uplink data reordering when it is determined that the handover is required, wherein the first base station transmits any uplink data received from the terminal to the AG without considering an order sequence of the uplink data, and wherein the second base station transmits any uplink data received from the terminal to the AG without considering the order sequence of the uplink data. - View Dependent Claims (2, 3, 4, 5)
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6. A method of receiving downlink data in a mobile communications system, the method performed by a terminal and comprising:
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receiving the downlink data from at least a first base station or a second base station; receiving a reordering indication from the first base station or the second base station when a handover from the first base station to the second base station is performed; and performing downlink data reordering after receiving the reordering indication, wherein the downlink data reordering is processed by a header compression entity in the terminal, wherein the downlink data received in the terminal from the first base station is received by the first base station from an Access Gateway (AG) and transmitted by the first base station to the terminal without considering an order sequence of the downlink data, and wherein the downlink data received in the terminal from the second base station is received by the second base station from the AG and transmitted by the second base station to the terminal without considering the order sequence of the downlink data. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification