KR-102962467-B1 - METHOD AND APPARATUS FOR 5G MIGRATION IN FREQUENCY INTERFERENCE COMBINATION BAND

Abstract

The present disclosure relates to a communication technique and a system for integrating a 5G communication system with IoT technology to support higher data transmission rates than those of 4G systems. The present disclosure may be applied to intelligent services (e.g., smart homes, smart buildings, smart cities, smart cars or connected cars, healthcare, digital education, retail, security and safety-related services, etc.) based on 5G communication technology and IoT-related technology. Furthermore, the present invention relates to a 5G migration method and apparatus in a frequency interference combination band, and more specifically, to a scheduling method and apparatus for interference control and efficient resource utilization in a mobile communication system that supports carrier aggregation technology or dual or multi-connection technology that utilizes multiple frequency resources simultaneously.

Inventors

• 백주영
• 민병윤
• 박효열

Assignees

• 삼성전자 주식회사

Dates

Publication Date

20260508

Application Date

20200518

Priority Date

20190516

Claims (18)

1. In a method performed by a first base station of a communication system, A step of determining whether the first frequency band associated with the first cell and the second frequency band associated with the second cell are frequency combinations in which intermodulation distortion (IMD) interference or harmonic interference occurs; A step of verifying resource allocation information for allocating resources to a terminal; A step of transmitting the above resource allocation information to the terminal; and It includes the step of transmitting or receiving a signal based on the above resource allocation information, Resources not used by the first cell are allocated as resources of a cell other than the first cell, and A method characterized in that, when the first frequency band associated with the first cell and the second frequency band associated with the second cell are frequency combinations in which the IMD interference occurs, downlink (DL) resources not used by the first cell are allocated for the second cell, and first uplink (UL) resources not used by the first cell are allocated for the second cell.
2. In paragraph 1, A method characterized in that the first cell corresponds to LTE (Long Term Evolution) and the second cell corresponds to NR (New Radio).
3. In paragraph 1, A method characterized in that the second frequency band associated with the second cell is higher than the first frequency band associated with the first cell.
4. In paragraph 1, A method characterized in that, when the first frequency band associated with the first cell and the second frequency band associated with the second cell are frequency combinations in which IMD interference occurs, the second UL resource not used by the first cell is allocated as a supplementary uplink (SUL) resource of the third cell.
5. delete
6. In paragraph 1, A method characterized in that, when the first frequency band associated with the first cell and the second frequency band associated with the second cell are frequency combinations in which IMD interference and harmonic interference occur, the third UL resource not used by the first cell is allocated as an additional uplink resource of the third cell, and the DL resource and UL resource not used by the second cell are allocated as DL resources and UL resources of the fourth cell.
7. In paragraph 1, A method characterized in that, when the first frequency band associated with the first cell and the second frequency band associated with the second cell are frequency combinations in which harmonic interference occurs, the DL resources and UL resources not used by the second cell are allocated to the DL resources and UL resources of the fourth cell.
8. In a method performed by a terminal of a communication system, A step of receiving settings for the first cell and the second cell; A step of receiving resource allocation information for allocating resources to the terminal from a first base station; and It includes the step of transmitting or receiving a signal based on the above resource allocation information, The first frequency band associated with the first cell and the second frequency band associated with the second cell are frequency combinations in which intermodulation distortion (IMD) interference or harmonic interference occurs, and Resources not used by the first cell are allocated as resources of a cell other than the first cell, and A method characterized in that, when the first frequency band associated with the first cell and the second frequency band associated with the second cell are frequency combinations in which the IMD interference occurs, downlink (DL) resources not used by the first cell are allocated for the second cell, and first uplink (UL) resources not used by the first cell are allocated for the second cell.
9. In paragraph 8, A method characterized in that the first cell corresponds to LTE (Long Term Evolution) and the second cell corresponds to NR (New Radio).
10. In paragraph 8, A method characterized in that the second frequency band associated with the second cell is higher than the first frequency band associated with the first cell.
11. In paragraph 8, A method characterized in that, when the first frequency band associated with the first cell and the second frequency band associated with the second cell are frequency combinations in which IMD interference occurs, the second UL resource not used by the first cell is allocated as a supplementary uplink (SUL) resource of the third cell.
12. delete
13. In paragraph 8, A method characterized in that, when the first frequency band associated with the first cell and the second frequency band associated with the second cell are frequency combinations in which IMD interference and harmonic interference occur, the third UL resource not used by the first cell is allocated as an additional uplink resource of the third cell, and the DL resource and UL resource not used by the second cell are allocated as DL resources and UL resources of the fourth cell.
14. In paragraph 8, A method characterized in that, when the first frequency band associated with the first cell and the second frequency band associated with the second cell are frequency combinations in which harmonic interference occurs, the DL resources and UL resources not used by the second cell are allocated to the DL resources and UL resources of the fourth cell.
15. In the first base station of a communication system, Transmitter/receiver; and A control unit configured to determine whether a first frequency band associated with a first cell and a second frequency band associated with a second cell are frequency combinations in which intermodulation distortion (IMD) interference or harmonic interference occurs, to determine resource allocation information for allocating resources to a terminal, to transmit said resource allocation information to the terminal, and to transmit or receive a signal based on said resource allocation information. Resources not used by the first cell are allocated as resources of a cell other than the first cell, and A first base station characterized in that, when the first frequency band associated with the first cell and the second frequency band associated with the second cell are frequency combinations in which IMD interference occurs, downlink (DL) resources not used by the first cell are allocated for the second cell, and first uplink (UL) resources not used by the first cell are allocated for the second cell.
16. In paragraph 15, The first cell corresponds to LTE (Long Term Evolution), and the second cell corresponds to NR (New Radio), and A first base station characterized in that the second frequency band associated with the second cell is higher than the first frequency band associated with the first cell.
17. In a terminal of a communication system, Transmitter/receiver; and It includes a control unit configured to receive settings for a first cell and a second cell, receive resource allocation information for allocating resources to the terminal from a first base station, and transmit or receive a signal based on the resource allocation information. The first frequency band associated with the first cell and the second frequency band associated with the second cell are frequency combinations in which intermodulation distortion (IMD) interference or harmonic interference occurs, and Resources not used by the first cell are allocated as resources of a cell other than the first cell, and A terminal characterized in that, when the first frequency band associated with the first cell and the second frequency band associated with the second cell are frequency combinations in which the IMD interference occurs, downlink (DL) resources not used by the first cell are allocated for the second cell, and first uplink (UL) resources not used by the first cell are allocated for the second cell.
18. In Paragraph 17, The first cell corresponds to LTE (Long Term Evolution), and the second cell corresponds to NR (New Radio), and A terminal characterized in that the second frequency band associated with the second cell is higher than the first frequency band associated with the first cell.

Description

Method and apparatus for 5G migration in frequency interference combination band The present invention relates to a 5G migration method and apparatus in a frequency interference combination band, and more specifically, to a scheduling method and apparatus for interference control and efficient resource utilization in a mobile communication system that supports carrier aggregation technology or dual connectivity or multi-connection technology that utilizes multiple frequency resources simultaneously. Efforts are being made to develop improved 5G or pre-5G communication systems to meet the increasing demand for wireless data traffic since the commercialization of 4G communication systems. For this reason, 5G or pre-5G communication systems are referred to as Beyond 4G Network communication systems or Post-LTE systems. 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. To mitigate path loss and increase transmission distance in the mmWave band, technologies such as beamforming, massive MIMO, full Dimensional MIMO (FD-MIMO), array antennas, analog beamforming, and large-scale antennas are being discussed for 5G communication systems. In addition, to improve the network of the system, 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. Furthermore, in 5G systems, 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. Meanwhile, the Internet is evolving from a human-centric network where humans generate and consume information into an IoT (Internet of Things) network that processes information by exchanging it among distributed components, such as objects. 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, technologies such as sensor networks, Machine to Machine (M2M), and Machine Type Communication (MTC) are being implemented using 5G communication techniques such as beamforming, MIMO, and array antennas. The application of cloud RAN as a big data processing technology, as previously described, can also be considered an example of the convergence of 5G and IoT technologies. Meanwhile, when a terminal transmits and receives signals using resources on different frequency bands via carrier aggregation or dual or multiple connections, internal interference signals caused by harmonic interference and intermodulation distortion (IMD) may occur at the receiver of a specific frequency band, potentially degrading the terminal's downlink signal reception performance. Therefore, a method to control these internal interference signals is required. FIG. 1 is a diagram showing an example of a system in which intermodulation distortion (IMD) interference occurs according to one embodiment of the present disclosure. Figure 2 is a diagram showing an example of a radio resource where IMD interference occurs in EN-DC. Figure 3 is a diagram showing an example of resource management for avoiding IMD interference. Figure 4 is a diagram showing another example of resource management for IMD interference avoidance. FIG. 5 is a diagram illustrating an example of resource management based on a supplementary uplink (SUL) according to an embodiment of the present disclosure. FIG. 6 is a flowchart illustrating a method for managing the resources of a base station based on a supplementary uplink (SUL) according to one embodiment of the present disclosure. FIGS. 7a and 7b