KR-102962927-B1 - METHOD AND APPARATUS FOR CONTROLLING ACTIVATION OF A PLURALITY OF RLC LAYER IN WIRELESS COMMUNICATION SYSTEM

KR102962927B1KR 102962927 B1KR102962927 B1KR 102962927B1KR-102962927-B1

Abstract

The present disclosure discloses a method for controlling the activation of an RLC layer device of a terminal in a wireless communication system, comprising: receiving a Radio Resource Control (RRC) message or MAC control information from a base station; identifying setting information for controlling the activation of at least one RLC layer device included in the RRC message or MAC control information; and enabling or deactivating some or all of the RLC layer devices based on the identified setting information.

Inventors

김동건
백상규

Assignees

삼성전자주식회사

Dates

Publication Date: 20260512
Application Date: 20190730
Priority Date: 20190325

Claims (13)

In a method for a terminal to perform communication using a plurality of RLC (Radio Link Control) layer devices in a wireless communication system, A step of receiving information regarding packet replication settings for a wireless bearer via an RRC (Radio Resource Control) message from a base station; Based on the above packet replication settings, a step of setting a plurality of RLC layer devices corresponding to a PDCP (Packet Data Convergence Protocol) layer device and including one first RLC layer device and a second RLC layer device; and It includes the step of receiving a MAC (Medium Access Control) CE (Control Element) for controlling the activation or deactivation of each of the second RLC layer devices among the plurality of RLC layer devices configured above, The above MAC CE consists of 8 bits, and The above MAC CE is: A single 5-bit field representing the bearer identifier to which the above packet replication settings are applied, and A method characterized by including three 1-bit fields each indicating the enabled or disabled state of the first, second, and third devices among the second RLC layer devices.
In paragraph 1, The above MAC CE has a fixed size, A method characterized in that the MAC CE is identified by a logical channel identifier indicating that the MAC CE is a MAC CE for controlling the activation or deactivation of each of the second RLC layer devices.
In paragraph 1, A method characterized in that the three 1-bit fields are arranged in ascending order of the logical channel identifiers set in the second RLC layer devices.
In paragraph 1, The step of receiving the above MAC CE is, The method includes the step of receiving a MAC CE to indicate the deactivation of all of the above second RLC layer devices, and A method further comprising the step of disabling the above packet replication settings.
In paragraph 4, A method further comprising the step of operating in a split bearer mode that transmits different data using a preset second RLC layer device among the first RLC layer device and the second RLC layer devices of the wireless bearer.
A method for a base station in a wireless communication system to control the activation of a plurality of RLC (Radio Link Control) layer devices configured for a terminal, wherein A step of transmitting information about packet replication settings for a wireless bearer via an RRC (Radio Resource Control) message; and The method includes the step of transmitting a MAC (Medium Access Control) CE (Control Element) for controlling the activation or deactivation of each of the second RLC layer devices among a plurality of RLC layer devices, which correspond to a PDCP (Packet Data Convergence Protocol) layer device and include one first RLC layer device and two second RLC layer devices. The above MAC CE consists of 8 bits, and The above MAC CE is: A single 5-bit field representing the bearer identifier to which the above packet replication settings are applied, and A method characterized by including three 1-bit fields each indicating the enabled or disabled state of the first, second, and third devices among the second RLC layer devices.
In paragraph 6, The above MAC CE has a fixed size, A method characterized in that the MAC CE is identified by a logical channel identifier indicating that the MAC CE is a MAC CE for controlling the activation or deactivation of each of the second RLC layer devices.
In paragraph 6, A method characterized in that the three 1-bit fields are arranged in ascending order of the logical channel identifiers set in the second RLC layer devices.
In paragraph 6, The step of transmitting the above MAC CE is, A method comprising the step of transmitting a MAC CE to indicate the deactivation of all of the above second RLC layer devices.
In a terminal that performs communication using a plurality of RLC (Radio Link Control) layer devices in a wireless communication system, Transmitter/receiver; and It includes a processor, and the processor, Through the above-mentioned transceiver, information regarding packet replication settings for a wireless bearer is received from a base station via an RRC (Radio Resource Control) message, and Based on the above packet replication settings, a plurality of RLC layer devices are configured, including one first RLC layer device and two second RLC layer devices, corresponding to a PDCP (Packet Data Convergence Protocol) layer device, and Through the above-mentioned transceiver, a MAC (Medium Access Control) CE (Control Element) for controlling the activation or deactivation of each of the second RLC layer devices among the above-mentioned multiple RLC layer devices is received, and The above MAC CE consists of 8 bits, and The above MAC CE is: A single 5-bit field representing the bearer identifier to which the above packet replication settings are applied, and A terminal characterized by including three 1-bit fields each indicating the enabled or disabled state of the first, second, and third devices among the second RLC layer devices.
In a base station that controls the activation of a plurality of RLC (Radio Link Control) layer devices configured for a terminal in a wireless communication system, Transmitter/receiver; and It includes a processor, and the processor, Through the above-mentioned transceiver, information regarding packet replication settings for the wireless bearer is transmitted via an RRC (Radio Resource Control) message, and Through the above-mentioned transceiver, a MAC (Medium Access Control) CE (Control Element) is transmitted to control the activation or deactivation of each of the second RLC layer devices among a plurality of RLC layer devices, including one first RLC layer device and two second RLC layer devices, which correspond to a PDCP (Packet Data Convergence Protocol) layer device, and The above MAC CE consists of 8 bits, and The above MAC CE is: A single 5-bit field representing the bearer identifier to which the above packet replication settings are applied, and A base station characterized by including three 1-bit fields each indicating the activation or deactivation status of the first, second, and third devices among the second RLC layer devices.
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Description

Method and apparatus for controlling the activation of a plurality of RLC layer devices in a wireless communication system The present disclosure relates to a method and apparatus for enabling or disabling a plurality of RLC layer devices in a wireless communication system. Efforts are being made to develop improved 5G communication systems or pre-5G communication systems to meet the increasing demand for wireless data traffic following the commercialization of 4G communication systems. For this reason, 5G communication systems or pre-5G communication systems are referred to as systems beyond 4G networks or systems following LTE. The 5G communication system defined by 3GPP is called a New Radio (NR) system. To achieve high data transmission rates, the implementation of 5G communication systems in the mmWave band (e.g., the 60 GHz band) is being considered. In order to mitigate path loss and increase the transmission distance of radio waves in the ultra-high frequency band, beamforming, massive array multiple input/output (massive MIMO), full-dimensional multiple input/output (Full Dimensional MIMO: FD-MIMO), array antenna, analog beam-forming, and large-scale antenna technologies have been discussed and applied to NR systems in 5G communication systems. In addition, to improve the system's network, technologies such as advanced small cell, advanced small cell, cloud radio access network (cloud RAN), ultra-dense network, device-to-device communication (D2D), wireless backhaul, moving network, cooperative communication, Coordinated Multi-Points (CoMP), and interference cancellation are being developed in 5G communication systems. In addition, advanced coding modulation (ACM) methods such as FQAM (Hybrid FSK and QAM Modulation) and SWSC (Sliding Window Superposition Coding), as well as advanced access technologies such as FBMC (Filter Bank Multi Carrier), NOMA (non-orthogonal multiple access), and SCMA (sparse code multiple access), are being developed in 5G systems. Meanwhile, the Internet is evolving from a human-centered network where humans generate and consume information into an Internet of Things (IoT) network where distributed components, such as objects, exchange and process information. IoE (Internet of Everything) technology, which combines IoT with Big Data processing technologies through connections with cloud servers, is also emerging. To implement IoT, technological elements such as sensing technology, wired and wireless communication and network infrastructure, service interface technology, and security technology are required; consequently, technologies such as sensor networks, Machine-to-Machine (M2M) communication, and Machine-Type Communication (MTC) are currently being researched to facilitate the connection of objects. In an IoT environment, intelligent IT services that create new value for human life by collecting and analyzing data generated from connected objects can be provided. Through the convergence and integration of existing IT technologies with various industries, IoT can be applied to fields such as smart homes, smart buildings, smart cities, smart or connected cars, smart grids, healthcare, smart home appliances, and advanced medical services. Accordingly, various attempts are being made to apply 5G communication systems to IoT networks. For example, 5G communication such as sensor networks, Machine to Machine (M2M), and Machine Type Communication (MTC) is being implemented through techniques such as beamforming, MIMO, and array antennas. The application of cloud RAN as a big data processing technology, as described earlier, can also be considered an example of the convergence of 5G technology and IoT technology. With the advancement of wireless communication systems, there is a need for measures to control the activation of multiple RLC layer devices in systems that support high-reliability, low-latency services. FIG. 1a is a drawing illustrating the structure of an LTE system according to one embodiment of the present disclosure. FIG. 1b is a diagram showing a wireless protocol structure in an LTE system according to one embodiment of the present disclosure. FIG. 1c is a drawing illustrating the structure of a next-generation mobile communication system according to one embodiment of the present disclosure. FIG. 1d is a diagram illustrating the wireless protocol structure of a next-generation mobile communication system according to one embodiment of the present disclosure. FIG. 1e is a diagram illustrating a procedure according to one embodiment of the present disclosure in which a terminal switches from an RRC idle mode or an RRC disabled mode to an RRC connection mode, and a base station sets carrier aggregation technology, duplex access technology, or packet redundancy technology to the terminal. FIG. 1f is a diagram showing a protocol layer device configured with packet redundancy technology according to one embodiment of the present disclosure. FIG. 1g is a diagram sho