Search

US-12621907-B2 - Method and apparatus for controlling packet duplication transmission in wireless communication system

US12621907B2US 12621907 B2US12621907 B2US 12621907B2US-12621907-B2

Abstract

A communication method performed by a terminal communicating in a wireless communication system by using a plurality of radio link control (RLC) entities is provided. The method includes receiving, from a base station, a radio resource control (RRC) message for configuring packet duplication for a radio bearer, configuring at least one RLC entity corresponding to the radio bearer based on the RRC message, and when packet data convergence protocol (PDCP) configuration information is included in the RRC message, configuring a PDCP entity corresponding to the radio bearer based on the PDCP configuration information.

Inventors

  • Sangkyu BAEK
  • Soenghun KIM

Assignees

  • SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date
20260505
Application Date
20231107
Priority Date
20190624

Claims (10)

  1. 1 . A method performed by a terminal in a wireless communication system, the method comprising: receiving a radio resource control (RRC) message including configuration information for a plurality of radio link control (RLC) entities associated with one cell group; identifying whether only one RLC entity is activated among the plurality of RLC entities of a data radio bearer (DRB) based on the RRC message; identifying a cell for uplink data, not applying a restriction of allowed serving cell, while the restriction of allowed serving cell is maintained, in case that the only one of RLC entities is activated; and transmitting, to the cell, the uplink data based on the identified cell.
  2. 2 . The method of claim 1 , wherein the plurality of RLC entities are associated with a packet data convergence protocol (PDCP) entity for the DRB.
  3. 3 . The method of claim 1 , wherein information about allowed serving cell includes a list of available cells.
  4. 4 . The method of claim 1 , wherein the one cell group corresponds to one medium access control (MAC) entity.
  5. 5 . The method of claim 1 , wherein the RRC message includes information related to activation for a packet duplication of an RLC entity.
  6. 6 . A terminal performed in a wireless communication system, the terminal comprising: a transceiver; and at least one processor coupled with the transceiver and configured to: control the transceiver to receive a radio resource control (RRC) message including configuration information for a plurality of radio link control (RLC) entities associated with one cell group, identify whether only one RLC entity is activated among the plurality of RLC entities of a data radio bearer (DRB) based on the RRC message, identify a cell for uplink data, not applying a restriction of allowed serving cell, while the restriction of allowed serving cell is maintained, in case that the only one of RLC entities is activated, and control the transceiver to transmit, to the cell, the uplink data based on the identified cell.
  7. 7 . The terminal of claim 6 , wherein the plurality of RLC entities are associated with a packet data convergence protocol (PDCP) entity for the DRB.
  8. 8 . The terminal of claim 6 , wherein information about allowed serving cell includes a list of available cells.
  9. 9 . The terminal of claim 6 , wherein the one cell group corresponds to one medium access control (MAC) entity.
  10. 10 . The terminal of claim 6 , wherein the RRC message includes information related to activation for a packet duplication of an RLC entity.

Description

CROSS-REFERENCE TO RELATED APPLICATION(S) This application is a continuation application of prior application Ser. No. 16/906,720, filed on Jun. 19, 2020, which is based on and claims priority under 35 U.S.C. § 119(a) of a Korean patent application number 10-2019-0075232, filed on Jun. 24, 2019, in the Korean Intellectual Property Office, and of a Korean patent application number 10-2019-0127272, filed on Oct. 14, 2019, in the Korean Intellectual Property Office, the disclosure of each of which is incorporated by reference herein in its entirety. BACKGROUND 1. Field The disclosure relates to a method and an apparatus for controlling packet duplication transmission in a wireless communication system. 2. Description of Related Art To meet increasing demand with respect to wireless data traffic after the commercialization of 4th generation (4G) communication systems, efforts have been made to develop 5th generation (5G) or pre-5G communication systems. For this reason, 5G or pre-5G communication systems are called ‘beyond 4G network’ communication systems or ‘post long term evolution (post-LTE)’ systems. To achieve high data rates, implementation of 5G communication systems in an ultra-high frequency or millimeter-wave (mmWave) band (e.g., a 60 GHz band) is being considered. To reduce path loss of radio waves and increase a transmission distance of radio waves in the ultra-high frequency band for 5G communication systems, various technologies, such as beamforming, massive multiple-input and multiple-output (massive MIMO), full-dimension MIMO (FD-MIMO), array antennas, analog beamforming, and large-scale antennas are being studied. To improve system networks for 5G communication systems, various technologies, such as evolved small cells, advanced small cells, cloud radio access networks (cloud RAN), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, moving networks, cooperative communication, coordinated multi-points (CoMP), and interference cancellation have been developed. In addition, for 5G communication systems, advanced coding modulation (ACM) technologies, such as hybrid frequency-shift keying (FSK) and quadrature amplitude modulation (QAM) (FQAM) and sliding window superposition coding (SWSC), and advanced access technologies, such as filter bank multi-carrier (FBMC), non-orthogonal multiple access (NOMA), and sparse code multiple access (SCMA), have been developed. The Internet has evolved from a human-based connection network, where humans create and consume information, to the Internet of things (IoT), where distributed elements, such as objects exchange information with each other to process the information. Internet of everything (IoE) technology has emerged, in which the IoT technology is combined with, for example, technology for processing big data through connection with a cloud server. To implement the IoT, various technological elements, such as sensing technology, wired/wireless communication and network infrastructures, service interface technology, and security technology are required and, in recent years, technologies related to sensor networks for connecting objects, machine-to-machine (M2M) communication, and machine-type communication (MTC) have been studied. In the IoT environment, intelligent Internet technology (IT) services may be provided to collect and analyze data obtained from connected objects to create new value in human life. As existing information technology (IT) and various industries converge and combine with each other, the IoT may be applied to various fields, such as smart homes, smart buildings, smart cities, smart cars or connected cars, smart grids, health care, smart home appliances, and advanced medical services. Various attempts are being made to apply 5G communication systems to the IoT network. For example, technologies related to sensor networks, M2M communication, and MTC are being implemented by using 5G communication technology including beamforming, MIMO, and array antennas. Application of a cloud RAN as the above-described big data processing technology may be an example of convergence of 5G communication technology and IoT technology. Because various services may be provided according to the foregoing and the development of wireless communication systems, methods for smoothly providing services by using packet duplication transmission in wireless communication systems are required. 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 an apparatus and method capable of effectively supporting services