US-12628167-B2 - Method and apparatus for applying logical channel limit in wireless communication system

Abstract

The present disclosure relates to a communication technique for combining an IoT technology with a 5G communication system for supporting a higher data rate than a beyond 4G system, and a system therefor. The present disclosure can be applied to intelligent services (for example, smart homes, smart buildings, smart cities, smart cars or connected cars, health care, digital education, retail businesses, security and safety-related services, and the like) on the basis of 5G communication technologies and IoT-related technologies. Disclosed are a method and apparatus for applying or changing a logical channel limit in a wireless communication system.

Inventors

• Sangkyu BAEK
• Soenghun KIM

Assignees

• SAMSUNG ELECTRONICS CO., LTD.

Dates

Publication Date

20260512

Application Date

20201113

Priority Date

20191118

Claims (8)

1. 1 . A method performed by a terminal in a wireless communication system, the method comprising: receiving, from a base station, configuration information on logical channels, wherein a priority value for a physical layer of a logical channel is set to a high priority value or a low priority value in the configuration information; receiving, from the base station, downlink control information (DCI) indicating an uplink transmission resource; identifying whether the uplink transmission resource is allocated as a dynamic grant; in case that the uplink transmission resource is allocated as the dynamic grant: identifying whether the DCI includes an information field indicating a physical layer(PHY) priority value associated with the dynamic grant, wherein the PHY priority value is the high priority value or the low priority value, in case that the DCI includes the information field, selecting a first logical channel for which a priority value set in the configuration information is equal to the PHY priority value among the logical channels, in case that the DCI does not include the information field, selecting a second logical channel for which the low priority value is set by the configuration information among the logical channels, and transmitting, to the base station, data from the selected logical channel using the uplink transmission resource; in case that the uplink transmission resource is allocated as a configured grant, selecting a third logical channel allowed to use the configured grant among the logical channels, based on the configuration information; and in case that the uplink transmission resource is not available, transmitting, to the base station, data from the third logical channel using another uplink transmission resource corresponding to another configured grant, wherein the third logical channel is not allowed to use the another configured grant based on the configuration information.
2. 2 . The method of claim 1 , wherein the uplink transmission resource is identified as the dynamic grant, in case that the DCI is generated based on a cell-radio network temporary identifier (C-RNTI) or a modulation coding scheme-C-RNTI (MCS-C-RNTI).
3. 3 . The method of claim 1 , wherein the uplink transmission resource is identified as the configured grant, in case that the DCI is generated based on a configured scheduling-radio network temporary identifier (CS-RNTI).
4. 4 . The method of claim 1 , wherein the uplink transmission resource is not available, in case that a configuration for the configured grant is released, deactivated, or a bandwidth part associated with the configured grant is deactivated.
5. 5 . A terminal in a wireless communication system, the terminal comprising: a transceiver; and a controller configured to: control the transceiver to receive, from a base station, configuration information on logical channels, wherein a priority value for a physical layer of a logical channel is set to a high priority value or a low priority value in the configuration information, control the transceiver to receive, from the base station, downlink control information (DCI) for indicating an uplink transmission resource, and identify whether the uplink transmission resource is allocated as a dynamic grant, wherein, in case that the uplink transmission resource is allocated as the dynamic grant, the controller is further configured to: identify whether the DCI includes an information field indicating a physical layer (PHY) priority value associated with the dynamic grant, wherein the PHY priority value is the high priority value or the low priority value, in case that the DCI includes the information field, select a first logical channel for which a priority value set in the configuration information is equal to the PHY priority value among the logical channels, in case that the DCI does not include the information field, select a second logical channel for which the low priority value is set by the configuration information among the logical channels, and control the transceiver to transmit, to the base station, data from the selected logical channel using the uplink transmission resource, wherein, in case that the uplink transmission resource is allocated as a configured grant, the controller is further configured to select a third logical channel allowed to use the configured grant among the logical channels, based on the configuration information, and wherein in case that the uplink transmission resource is not available, control the transceiver to transmit, to the base station, data from the third logical channel using another uplink transmission resource corresponding to another configured grant, the third logical channel being not allowed to use the another configured grant based on the configuration information.
6. 6 . The terminal of claim 5 , wherein the uplink transmission resource is identified as the dynamic grant, in case that the DCI is generated based on a cell-radio network temporary identifier (C-RNTI) or a modulation coding scheme-C-RNTI (MCS-C-RNTI).
7. 7 . The terminal of claim 5 , wherein the uplink transmission resource is identified as the configured grant, in case that the DCI is generated based on a configured scheduling-radio network temporary identifier (CS-RNTI).
8. 8 . The terminal of claim 5 , wherein the uplink transmission resource is not available, in case that a configuration for the configured grant is released, deactivated, or bandwidth part associated with the configured grant is deactivated.

Description

PRIORITY This application is a National Phase Entry of PCT International Application No. PCT/KR2020/015982, which was filed on Nov. 13, 2020, and claims priority to Korean Patent Application No. 10-2019-0147999, which was filed on Nov. 18, 2019, the entire content of each of which is incorporated herein by reference. TECHNICAL FIELD The disclosure relates to a method and apparatus for applying or changing logical channel restrictions in a wireless communication system. BACKGROUND ART To meet the ever increasing demand for wireless data traffic since the commercialization of 4G communication systems, efforts have been made to develop improved 5G or pre-5G communication systems. As such, 5G or pre-5G communication systems are also called “beyond 4G network system” or “post Long Term Evolution (LTE) system”. To achieve high data rates, 5G communication systems are being considered for implementation in the extremely high frequency (mmWave) band (e.g., 60 GHz band). To decrease path loss of radio waves and increase the transmission distance in the mmWave band, various technologies including beamforming, massive multiple-input multiple-output (massive MIMO), full dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and large scale antennas are considered for 5G communication systems. Also, to improve system networks in 5G communication systems, technology development is under way regarding evolved small cells, advanced small cells, cloud radio access networks (cloud RANs), ultra-dense networks, device-to-device (D2D) communication, wireless backhaul, moving networks, cooperative communication, coordinated multi-points (CoMP), interference cancellation, and the like. Additionally, advanced coding and modulation (ACM) schemes such as hybrid frequency shift keying and quadrature amplitude modulation (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) are also under development for 5G systems. Meanwhile, the Internet is evolving from a human centered network where humans create and consume information into the Internet of Things (IoT) where distributed elements such as things exchange and process information. There has also emerged the Internet of Everything (IoE) technology that combines IoT technology with big data processing technology through connection with cloud servers. To realize IoT, technology elements related to sensing, wired/wireless communication and network infrastructure, service interfacing, and security are needed, and technologies interconnecting things such as sensor networks, machine-to-machine (M2M) or machine type communication (MTC) are under research in recent years. In IoT environments, it is possible to provide intelligent Internet technology services, which collect and analyze data created by interconnected things to add new values to human life. Through convergence and combination between existing information technologies and various industries, IoT technology may be applied to various areas such as smart homes, smart buildings, smart cities, smart or connected cars, smart grids, health-care, smart consumer electronics, and advanced medical services. Accordingly, various attempts are being made to apply 5G communication systems to IoT networks. For example, technologies such as sensor networks and machine-to-machine (M2M) or machine type communication (MTC) are being realized by use of 5G communication technologies including beamforming, MIMO, and array antennas. Application of cloud RANs as a big data processing technique described above may be an instance of convergence of 5G technology and IoT technology. On the other hand, for transmitting data in a wireless communication system, each logical channel may have a restriction on usable radio resources. This is to transmit data only for a specific resource in consideration of quality of service (QoS) requirements of data processed in a logical channel. When such a logical channel restriction is configured, for including data in a new medium access control (MAC) protocol data unit (PDU), only logical channels allowed according to the configured logical channel restriction can participate in logical channel prioritization. DISCLOSURE OF INVENTION Technical Problem An object of the disclosure is to provide a method and apparatus for changing logical channel restrictions when a BWP is configured for each cell and data transmission according to the logical channel restrictions is not configured on the active BWP Solution to Problem In the disclosure for solving the above problem, a method of a terminal in a wireless communication system may include: receiving, from a base station, configuration information for a logical channel; receiving, from the base station, control information for allocating an uplink transmission resource; identifying whether the allocated uplink transmiss