Time monitoring of packet retransmissions during soft handover
First Claim
1. A method for receiving data in a data retransmission scheme, said method comprising:
- receiving, at a node B, information about a soft handover state of a user equipment from a serving radio network controller of the user equipment, wherein said information is received in a procedure for updating a communication parameter used in communications between the user equipment and a UTRAN, andreceiving, at the node B, data from the user equipment,wherein said information indicates whether the user equipment has several radio link sets or not.
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Abstract
The present invention relates to a method for scheduling data retransmissions, a method for use in a data retransmission scheme and a method for updating a soft buffer of a base station in a mobile communication system during a soft-handover. The present invention relates to a base station executing the controlling and updating method, a communication terminal for executing the scheduling method and to a mobile communication system comprising at least one the base station and communication terminal. To prevent erroneous combining of data packets in a packet retransmission scheme at the receiver, the present invention provides a method that may flush the soft buffer region associated to a received data packet upon its correct reception. Further, a method is provided that monitors the time elapsed since the last storing of a data packet in a buffer region of a base station to be able to trigger the flush of the buffer region upon expiry of a threshold time period.
57 Citations
29 Claims
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1. A method for receiving data in a data retransmission scheme, said method comprising:
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receiving, at a node B, information about a soft handover state of a user equipment from a serving radio network controller of the user equipment, wherein said information is received in a procedure for updating a communication parameter used in communications between the user equipment and a UTRAN, and receiving, at the node B, data from the user equipment, wherein said information indicates whether the user equipment has several radio link sets or not.
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2. A method for receiving data in a data retransmission scheme, said method comprising:
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receiving, at a node B, information about a soft handover state of a user equipment from a serving radio network controller of the user equipment, wherein said information is received in a procedure for updating a communication parameter used in communications between the user equipment and a UTRAN, and receiving, at the node B, data from the user equipment, wherein said information indicates whether the user equipment is in communication with a plurality of Node Bs or not.
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3. A method for receiving data in a data retransmission scheme, said method comprising:
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receiving, at a node B, information about a soft handover state of a user equipment from a serving radio network controller of the user equipment, wherein said information is received in a procedure for updating a communication parameter used in communications between the user equipment and a UTRAN, and receiving, at the node B, data from the user equipment, wherein said information indicates that the user equipment is in the soft handover. - View Dependent Claims (4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A Node B for receiving data in a data retransmission scheme, said Node B comprising:
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a receiving section that receives, from a serving radio network controller of a user equipment, information about a soft handover state of the user equipment, wherein the receiving section receives information in a procedure for updating a communication parameter used in communications between the user equipment and a UTRAN, and wherein the receiving section further receives data from the user equipment; and a soft buffer that stores the received data, wherein said information indicates whether the user equipment has several radio link sets or not.
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17. A Node B for receiving data in a data retransmission scheme, said Node B comprising:
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a receiving section that receives, from a serving radio network controller of a user equipment, information about a soft handover state of the user equipment, wherein the receiving section receives information in a procedure for updating a communication parameter used in communications between the user equipment and a UTRAN, and wherein the receiving section further receives data from the user equipment; and a soft buffer that stores the received data, wherein said information indicates whether the user equipment is in communication with a plurality of Node Bs or not.
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18. A Node B for receiving data in a data retransmission scheme, said Node B comprising:
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a receiving section that receives, from a serving radio network controller of a user equipment, information about a soft handover state of the user equipment, wherein the receiving section receives information in a procedure for updating a communication parameter used in communications between the user equipment and a UTRAN, and wherein the receiving section further receives data from the user equipment; and a soft buffer that stores the received data, wherein said information indicates that the user equipment is in the soft handover. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification