Method for acquiring header compression context in user equipment for receiving packet data service
First Claim
1. A method for decompressing a header of packet data received by User Equipment (UE) in a mobile communication system providing a packet data service, the method comprising the steps of:
- a) receiving, by the UE, packet data including a compressed header from a Radio Network Controller (RNC);
b) determining, by the UE, whether to request retransmission of all or part of header compression context information, based on the received packet data, and transmitting the determined retransmission request from the UE to the RNC; and
c) retransmitting all or part of the header compression context information from the RNC to the UE in response to the determined retransmission request.
1 Assignment
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Accused Products
Abstract
Disclosed is a method for acquiring a Header Compression (HC) context information in User Equipment (UE) to receive a packet data service from a mobile communication system. In the method, the UE receives packet data including a compressed header from a Radio Network Controller (RNC), and determines whether to request retransmission of all or part of the header compression context, based on the received packet data, and transmits the determined retransmission request to the RNC. The RNC retransmits all or part of the header compression context to the UE in response to the determined retransmission request.
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Citations
32 Claims
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1. A method for decompressing a header of packet data received by User Equipment (UE) in a mobile communication system providing a packet data service, the method comprising the steps of:
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a) receiving, by the UE, packet data including a compressed header from a Radio Network Controller (RNC);
b) determining, by the UE, whether to request retransmission of all or part of header compression context information, based on the received packet data, and transmitting the determined retransmission request from the UE to the RNC; and
c) retransmitting all or part of the header compression context information from the RNC to the UE in response to the determined retransmission request. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A method for decompressing a header of packet data received by a UE in a mobile communication system providing a packet data service, the method comprising the steps of:
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a) receiving, by the UE, packet data including a compressed header from an RNC;
b) determining, by the UE, whether to request retransmission of all or part of header compression context information, based on the received packet data, and transmitting the determined retransmission request from the UE to the RNC through an RRC message; and
c) retransmitting said all or part of the header compression context information from the RNC to the UE through a dedicated data channel for packet data transmission in response to the determined retransmission request.
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16. A method for decompressing a header of packet data received by a UE in a mobile communication system providing a packet data service, the method comprising the steps of:
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a) requesting, by the UE, retransmission of part or all of header compression context information if an error occurs in decompressing the header of the received packet data, depending on a cause of the error; and
b) decompressing, by the UE, a header of the received packet data using header compression context information received in response to the retransmission request. - View Dependent Claims (17, 18)
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19. A method for transmitting header compression context information for use in compression of a packet data header from an RNC in a mobile communication system providing a packet data service, the method comprising the steps of:
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a) receiving, by the RNC, a request for retransmission of all or part of header compression context information according to a cause of an error occurring in header decompression, said request being received from a UE;
b) checking, by the RNC, whether header compression context information corresponding to the retransmission request received from the UE is stored in the RNC; and
c) determining, by the RNC, whether to transmit all or part of the checked header compression context information according to the retransmission request received from the UE, and transmitting all or part of the header compression context information according to the determination. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A method for transmitting header compression context information for use in compression of a packet data header to a UE, which has requested a packet data service being provided by a mobile communication system, the method comprising the steps of:
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a) checking header compression context information of packet data being provided to a cell where the UE is located; and
b) transmitting the checked header compression context to the UE. - View Dependent Claims (26, 27, 28, 29, 30, 31)
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32. A method for receiving, by a UE, header compression context information for use in compression of a packet data header, said UE having requested a current packet data service being provided by a mobile communication system, the method comprising the steps of:
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a) requesting, by the UE, the current packet data service from a Core Network (CN);
b) notifying, by the CN, a Radio Network Controller (RNC) corresponding to a cell, where the UE is located, of the service request by the UE; and
c) checking, by the RNC, header compression context information for packet data being provided to the cell where the UE is located, and transmitting the checked header compression context to the UE by incorporating the checked header compression context into information required to set up a radio bearer.
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Specification