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A method and apparatus for a transmitter having a radio protocol with an upper layer and a lower layer therein used for management of full header transmission when transmitting data packets to a receiver are provided. The method comprises controlling a transmission of a full header packet by inform

A method and apparatus for a transmitter having a radio protocol with an upper layer and a lower layer therein used for management of full header transmission when transmitting data packets to a receiver are provided. The method comprises controlling a transmission of a full header packet by information from the lower layer, whereby, if the upper layer receives from the lower layer, information of a failed transmission of at least one packet, the upper layer decides whether to send a next packet as a full header packet.

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What is claimed is: 1. A method for a transmitter having a radio protocol with an upper layer and a lower layer therein used for management of full header transmission when transmitting data packets to a receiver, the method comprising: controlling a transmission of a full header packet by informat

What is claimed is: 1. A method for a transmitter having a radio protocol with an upper layer and a lower layer therein used for management of full header transmission when transmitting data packets to a receiver, the method comprising: controlling a transmission of a full header packet by information from the lower layer, whereby, if the upper layer receives from the lower layer, information of a failed transmission of at least one packet, the upper layer decides whether to send a next packet as a full header packet, wherein the upper layer is part of a packet data convergence protocol (PDCP) entity, and the lower layer is part of a radio link control (RLC) entity. 2. The method of claim 1, wherein the upper layer sends the next packet as a full header packet. 3. The method of claim 1, wherein the information of a failed transmission indicates that the lower layer discarded the at least one packet. 4. The method of claim 3, wherein the information of a failed transmission includes an identifier (MUI) used to indicate the at least one packet (RLC SDU) that was discarded by the lower layer (RLC). 5. The method of claim 1, wherein the lower layer operates in transparent mode (TM), unacknowledged mode (UM), or acknowledged mode (AM). 6. The method of claim 1, wherein the upper layer decides to send the next packet as a full header packet whenever the lower layer reports that the at least one packet has been discarded thereby. 7. The method of claim 1, wherein sending the next packet as a full header packet is performed regardless of any request from the receiver. 8. The method of claim 1, wherein the upper layer receives information from the lower layer upon delivering a parameter indicating whether the lower layer needs to inform the upper layer about a discarded packet. 9. The method of claim 1, wherein the information from the lower layer relates to a transmission result of one or more packets. 10. The method of claim 1, wherein a context identifier (CID) is also transmitted with the full header packet to allow each packet stream to be identified. 11. The method of claim 1, wherein the transmitter is a network and the receiver is a terminal, or the transmitter is a terminal and the receiver is a network. 12. The method of claim 1, wherein the packets are part of a transmission control protocol (TCP) stream. 13. A transmitter having a radio protocol therein used for management of full header packet transmission when transmitting data packets to a receiver, the transmitter comprising: an upper layer for controlling a transmission of a full header packet by information from a lower layer, whereby, if the upper layer receives from the lower layer, information of a failed transmission of at least one packet, the upper layer decides whether to send a next packet as a full header packet, wherein the upper layer is part of a packet data convergence protocol (PDCP) entity, and the lower layer is part of a radio link control (RLC) entity. 14. The transmitter of claim 13, wherein the upper layer comprises: a header compressor that receives a packet stream and outputs full header packets and compressed header packets; a data transmitter that delivers to the lower layer, the full header packets and compressed header packets received from the header compressor; and a header compression controller that receives information from the lower layer for controlling the header compressor to output full header packets or compressed header packets to be delivered by the data transmitter. 15. The transmitter of claim 13, wherein the lower layer comprises a buffer and transmission unit that receives and stores the full header packets and compressed header packets delivered from the upper layer; a transmission failure discriminator that provides to the upper layer, information of a failed transmission of at least a single packet of a packet stream; and a transmission controller that controls the buffer and transmission unit to transmit the full header packets and compressed header packets to the receiver. 16. The transmitter of claim 13, wherein the upper layer sends the next packet as a full header packet. 17. The transmitter of claim 13, wherein the information of a failed transmission indicates that the lower layer discarded the at least one packet. 18. The transmitter of claim 17, wherein the information of a failed transmission includes an identifier (MUI) used to indicate the at least one packet (RLC SDU) that was discarded by the lower layer (RLC). 19. The transmitter of claim 13, wherein the lower layer operates in transparent mode (TM), unacknowledged mode (UM), or acknowledged mode (AM). 20. The transmitter of claim 13, wherein the upper layer decides to send the next packet as a full header packet whenever the lower layer reports that the at least one packet has been discarded thereby. 21. The transmitter of claim 13, wherein sending of the next packet as a full header packet is performed regardless of any request from the receiver. 22. The transmitter of claim 13, wherein the upper layer receives information from the lower layer upon delivering a parameter indicating whether the lower layer needs to inform the upper layer about a discarded packet. 23. The transmitter of claim 13, wherein the information from the lower layer relates to a transmission result of one or more packets. 24. The transmitter of claim 13, wherein a context identifier (CID) is also transmitted with the full header packet to allow each packet stream to be identified. 25. The transmitter of claim 13, wherein the transmitter is a network and the receiver is a terminal, or the transmitter is a terminal and the receiver is a network. 26. The transmitter of claim 13, wherein the packets are part of a transmission control protocol (TCP) stream.