TECHNICAL FIELD

The disclosure relates to operations of a terminal and a base station in a next-generation mobile communication system. More particularly, the disclosure relates to a method for a terminal and a base station to efficiently manage a buffer, and a method and an apparatus capable of accelerating retransmission during the retransmission.

BACKGROUND

To meet the demand for wireless data traffic having increased since deployment of 4G communication systems, efforts have been made to develop an improved 5G or pre-5G communication system. Therefore, the 5G or pre-5G communication system is also called a ‘Beyond 4G Network’ or a ‘Post LTE System’.

The 5G communication system is considered to be implemented in higher frequency (mmWave) bands, e.g., 60 GHz bands, so as to accomplish higher data rates. To decrease propagation loss of the radio waves and increase the transmission distance, the beamforming, massive multiple-input multiple-output (MIMO), full dimensional MIMO (FD-MIMO), array antenna, an analog beam forming, large scale antenna techniques are discussed in 5G communication systems.

In addition, in 5G communication systems, development for system network improvement is under way based on advanced small cells, cloud radio access networks (RANs), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, moving network, cooperative communication, coordinated multi-points (CoMP), reception-end interference cancellation and the like.

In the 5G system, hybrid FSK and QAM modulation (FQAM) and sliding window superposition coding (SWSC) as an advanced coding modulation (ACM), and filter bank multi carrier (FBMC), non-orthogonal multiple access (NOMA), and sparse code multiple access (SCMA) as an advanced access technology have been developed. On the other hand, in the next-generation mobile communication system, there is a need for a method for a base station to efficiently manage a buffer and a method capable of accelerating retransmission.

The above information is presented as background information only to assist with an understanding of the disclosure. No determination has been made, and no assertion is made, as to whether any of the above might be applicable as prior art with regard to the disclosure.

SUMMARY

Aspects of the disclosure are to address at least the above-mentioned problems and/or disadvantages and to provide at least the advantages described below. Accordingly, an aspect of the disclosure is to provide a method for efficiently managing a buffer and implementation methods thereof in different buffer structures. Further, the disclosure proposes methods for accelerating retransmission and efficiently managing a buffer in a next-generation mobile communication system, and implementation methods thereof in different buffer structures.

In accordance with an aspect of the disclosure, a method by an apparatus for controlling buffers in a wireless communication system is provided. The method includes storing information related to a packet in at least one of a first buffer or a second buffer, transmitting data generated based on the packet, and, when an acknowledgement signal is received for the data, discarding the information.

In accordance with another aspect of the disclosure, a method by an apparatus for controlling buffers in a wireless communication system is provided. The method includes storing first information related to a first packet in a third buffer; storing second information related to a second packet in a fourth buffer, wherein the second information is generated by preprocessing the first packet before acquiring resource information for transmitting the first packet; identifying mapping information between location information of the third buffer and location information of the fourth buffer, and when the resource information is received, transmitting data corresponding to the second packet based on the resource information.

In accordance with another aspect of the disclosure, an apparatus in a wireless communication system is provided. The apparatus includes a transceiver and at least one processor configured to store information related to a packet in the at least one of the first buffer or the second buffer, transmit data generated based on the packet, and, when an acknowledgement signal is received for the data, discard the information.

In accordance with another aspect of the disclosure, an apparatus in a wireless communication system is provided. The apparatus includes a transceiver and at least one processor configured to store first information related to a first packet in a third buffer, store second information in a fourth buffer, the second information being related to a second packet that is generated by preprocessing the first packet before acquiring resource information for transmitting the first packet, identify a mapping information between location information of the third buffer and location information of the fourth buffer, and, when the resource information is received, transmit data corresponding to the second packet based on the resource information.

According to the embodiments of the disclosure, it is possible to heighten efficiency of the buffer management of the terminal and to increase the data rate.

Other aspects, advantages, and salient features of the disclosure will become apparent to those skilled in the art from the following detailed description, which, taken in conjunction with the annexed drawings, discloses various embodiments of the disclosure.

