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KR-20260064424-A - NETWORK ENTITY FOR ASSIGNING FREQUENCY FOR SATELLITE COMMUNICATION AND OPERATING METHOD THEREOF

KR20260064424AKR 20260064424 AKR20260064424 AKR 20260064424AKR-20260064424-A

Abstract

A network entity is disclosed comprising at least one processor and a memory for storing instructions. When the instructions are executed individually or collectively by the at least one processor, the network entity may obtain a list of terrestrial (TN) cells representing one or more terrestrial cells that are at least partially overlappable with a non-terrestrial (NTN) cell, determine a resource allocation ratio between the non-terrestrial cell and the terrestrial cells for sharing a designated frequency band based on the traffic load of the terrestrial cells, determine a first configuration information representing frequency resource allocation for the non-terrestrial cell and a second configuration information representing frequency resource allocation for the terrestrial cells based on the resource allocation ratio, transmit the first configuration information to a non-terrestrial base station controlling a satellite servicing the non-terrestrial cell, and transmit the second configuration information to terrestrial base stations servicing the terrestrial cells.

Inventors

  • 김혜정
  • 고광현

Assignees

  • 삼성전자주식회사

Dates

Publication Date
20260507
Application Date
20241226
Priority Date
20241031

Claims (20)

  1. In the network object (910), At least one processor (912); and It includes a memory (914) for storing instructions, and when the instructions are executed individually or collectively by the at least one processor, the network object, Obtain a list of terrestrial network (TN) cells representing one or more terrestrial network cells that can overlap at least partially with non-terrestrial network (NTN) cells, and Based on the traffic load of the above-mentioned terrestrial network cells, a resource allocation ratio between the above-mentioned non-terrestrial network cells and the above-mentioned terrestrial network cells for sharing a designated frequency band is determined, and Based on the above resource allocation ratio, a first setting information indicating frequency resource allocation for the above non-terrestrial network cell and a second setting information indicating frequency resource allocation for the above terrestrial network cell are determined, and The above first setting information is transmitted to a non-ground base station (920) that controls a satellite servicing the above non-ground cell, and A network entity that transmits the above second setting information to ground network base stations (930) that service the ground network cells.
  2. In claim 1, the instructions cause the network entity, Based on the above resource allocation ratio, the above non-terrestrial network cell determines a first subframe allocation representing one or more subframes in which the frequency band is available, and the above terrestrial network cell determines a second subframe allocation representing one or more subframes in which the frequency band is available. A network object that includes information regarding the first subframe allocation in the first setting information and includes information regarding the second subframe allocation in the second setting information.
  3. In claim 1 or 2, the first setting information is, A network entity comprising information including information indicating the resource allocation ratio and/or information indicating at least one subframe among a plurality of subframes constituting a wireless frame that is allowed to transmit a signal through the frequency band by the satellite serving the non-terrestrial network cell.
  4. In claim 3, the at least one subframe is, A network object comprising at least one MBSFN (multimedia broadcast multicast service single frequency network) subframe (510).
  5. In claim 3 or 4, the at least one subframe is, A network entity comprising two or more consecutive subframes to be used for subframe synchronization between the above-mentioned non-terrestrial network cell and the above-mentioned terrestrial network cell.
  6. In claim 1 or 2, the second setting information is, A network entity comprising information indicating the resource allocation ratio and/or information indicating at least one subframe among a plurality of subframes constituting a wireless frame, wherein the terrestrial network base station servicing the terrestrial network cells is allowed to transmit a signal through the frequency band.
  7. In any one of claims 1 to 6, the instructions cause the network entity, A network object that includes synchronization coordination information to be used for subframe synchronization between the above-mentioned non-terrestrial network cell and the above-mentioned terrestrial network cell in the above-mentioned first setting information.
  8. In any one of claims 1 to 7, the instructions cause the network entity, Obtaining a first terrestrial network cell list corresponding to a first non-terrestrial network cell and including the first terrestrial network cells, and a second terrestrial network cell list corresponding to a second non-terrestrial network cell and including the second terrestrial network cells, and Identifying the first resource allocation ratio of the first non-terrestrial network cell relative to the first terrestrial network cells and the second resource allocation ratio of the second non-terrestrial network cell relative to the second terrestrial network cells, and Identifying a third terrestrial network cell that is commonly included in the first terrestrial network cell list and the second terrestrial network cell list, and Based on the higher value between the first resource allocation ratio and the second resource allocation ratio, a resource allocation ratio for the third terrestrial network cell is determined, and Based on the resource allocation ratio determined above, third DSS setting information representing frequency resource allocation for the third terrestrial network cell is generated, and A network entity that transmits the above-mentioned third DSS setting information to a base station servicing the above-mentioned third terrestrial network cell.
  9. In any one of claims 1 to 8, the instructions cause the network entity, Receiving cell placement change information indicating a changed cell placement of the above terrestrial network cells and/or the above non-terrestrial network cells, and Based on the cell placement change information above, update the list of terrestrial cells related to the above non-terrestrial cells, and Receive traffic load change information indicating the changed traffic load of the above terrestrial network cells, and Update the resource allocation ratio based on the above-mentioned updated terrestrial network cell list and/or the above-mentioned traffic load change information, and Based on the above-mentioned updated resource allocation ratio, the above-mentioned first setting information and the above-mentioned second setting information are updated, and The above-mentioned updated first configuration information is transmitted to the above-mentioned non-terrestrial base station, and A network object that transmits the above-mentioned updated second configuration information to the above-mentioned ground network base stations.
  10. In any one of claims 1 to 9, the instructions cause the network entity, The first configuration information is transmitted to the non-terrestrial base station through the core network (1518 or 1622) of the non-terrestrial network, and A network entity that transmits the second configuration information to the terrestrial network base stations through the core network (1522 or 1622) of the terrestrial network.
  11. In a method performed by a network object (910), Operation (1002) of obtaining a list of terrestrial network (TN) cells representing one or more terrestrial network cells that can overlap at least partially with non-terrestrial network (NTN) cells; An operation (1004) to determine a resource allocation ratio between the non-terrestrial cell and the terrestrial cell for sharing a designated frequency band based on the traffic load of the terrestrial cell; An operation (1008) to determine first setting information indicating frequency resource allocation for the non-terrestrial network cell and second setting information indicating frequency resource allocation for the terrestrial network cells based on the above resource allocation ratio; The operation (1010) of transmitting the above first setting information to a non-ground base station (920) that controls a satellite servicing the above non-ground cell; and A method including the operation (1010) of transmitting the above second setting information to ground network base stations (930) that service the ground network cells.
  12. In Article 11, An operation to determine, based on the above resource allocation ratio, a first subframe allocation in which the non-terrestrial network cell represents one or more subframes in which the frequency band is available, and a second subframe allocation in which the terrestrial network cells represent one or more subframes in which the frequency band is available; and A method further comprising the operation of including information regarding the first subframe allocation in the first setting information and including information regarding the second subframe allocation in the second setting information.
  13. In claim 11 or 12, the first setting information is, A method comprising information including information indicating the resource allocation ratio and/or information indicating at least one subframe among a plurality of subframes constituting a wireless frame that is allowed to transmit a signal through the frequency band by the satellite serving the non-terrestrial cell.
  14. In claim 13, the at least one subframe is, A method including at least one MBSFN (multimedia broadcast multicast service single frequency network) subframe (510).
  15. In claim 13 or 14, the at least one subframe is, A method comprising two or more consecutive subframes to be used for subframe synchronization between the above-mentioned non-terrestrial network cells and the above-mentioned terrestrial network cells.
  16. In claim 11 or 12, the second setting information is, A method comprising information indicating the resource allocation ratio and/or information indicating at least one subframe among a plurality of subframes constituting a wireless frame that is allowed to transmit a signal through the frequency band by the terrestrial network base station serving the terrestrial network cells.
  17. In any one of paragraphs 11 through 16, A method further comprising the operation of including synchronization adjustment information to be used for subframe synchronization between the above-mentioned non-terrestrial network cell and the above-mentioned terrestrial network cell in the above-mentioned first setting information.
  18. In any one of Articles 11 through 17, The operation of obtaining a first terrestrial network cell list corresponding to a first non-terrestrial network cell and including the first terrestrial network cells, and a second terrestrial network cell list corresponding to a second non-terrestrial network cell and including the second terrestrial network cells; An operation to identify a first resource allocation ratio of the first non-ground network cell relative to the first ground network cells and a second resource allocation ratio of the second non-ground network cell relative to the second ground network cells; An operation to identify a third terrestrial network cell that is commonly included in the first terrestrial network cell list and the second terrestrial network cell list; An operation to determine a resource allocation ratio for the third terrestrial network cell based on the higher value between the first resource allocation ratio and the second resource allocation ratio; The operation of generating third DSS setting information indicating frequency resource allocation for the third terrestrial network cell based on the resource allocation ratio determined above; and A method further comprising the operation of transmitting the above-mentioned third DSS setting information to a base station that services the above-mentioned third terrestrial network cell.
  19. In any one of paragraphs 11 through 18, Receiving cell placement change information indicating a changed cell placement of the above terrestrial network cells and/or the above non-terrestrial network cells, and/or Based on the cell placement change information above, update the list of terrestrial cells related to the above non-terrestrial cells, and An operation to receive traffic load change information indicating the changed traffic load of the above-mentioned terrestrial network cells; An operation to update the resource allocation ratio based on the above-mentioned updated terrestrial network cell list and/or the above-mentioned traffic load change information; An operation to update the first setting information and the second setting information based on the above-mentioned updated resource allocation ratio; The operation of transmitting the above-mentioned updated first configuration information to the above-mentioned non-terrestrial network base station; and A method further comprising the operation of transmitting the above-mentioned updated second setting information to the above-mentioned ground network base stations.
  20. In any one of claims 11 to 19, the first setting information is transmitted to the non-terrestrial network base station through the core network (1518 or 1622) of the non-terrestrial network, and The above second setting information is transmitted to the terrestrial network base stations through the core network (1522 or 1622) of the terrestrial network.

Description

Network Entity for Assigning Frequency for Satellite Communication and Method of Operating Thereof Embodiments of the present disclosure relate to a method of operating a network object for allocating a frequency for satellite communication. 5G mobile communication technology defines a wide frequency band to enable fast transmission speeds and new services, and can be implemented not only in sub-6GHz frequency bands such as 3.5 gigahertz (3.5GHz) but also in ultra-high frequency bands known as millimeter waves (mmWave), such as 28GHz and 39GHz, such as 'above 6GHz'. In addition, for 6G mobile communication technology, which is referred to as a system beyond 5G, implementation in the terahertz band (e.g., the 3 terahertz (3THz) band at 95GHz) is being considered to achieve transmission speeds 50 times faster and ultra-low latency reduced to one-tenth compared to 5G mobile communication technology. In the early stages of 5G mobile communication technology, aiming to satisfy service support and performance requirements for enhanced mobile broadband (eMBB), ultra-reliable low-latency communications (URLLC), and massive machine-type communications (mMTC), technologies include beamforming and massive MIMO to mitigate path loss and increase transmission distance in ultra-high frequency bands; support for various numerologies for the efficient utilization of ultra-high frequency resources (e.g., operation of multiple subcarrier spacing) and dynamic operation of slot formats; initial access techniques to support multi-beam transmission and broadband; definition and operation of band-width parts (BWPs); new channel coding methods such as low-density parity check (LDPC) codes for high-volume data transmission and polar codes for the reliable transmission of control information; L2 pre-processing; or networks providing dedicated networks specialized for specific services. Standardization of network slicing has been carried out. Currently, discussions are underway to improve and enhance the performance of the initial 5G mobile communication technology, taking into account the services that the 5G mobile communication technology was intended to support. Additionally, physical layer standardization is in progress for technologies such as V2X (vehicle-to-everything), which helps autonomous vehicles make driving decisions and enhance user convenience based on their own location and status information transmitted by the vehicle; NR-U (new radio unlicensed), which aims for system operation in unlicensed bands to meet various regulatory requirements; UE power saving, which is a terminal-satellite direct communication technology for securing coverage in areas where communication with the terrestrial network is impossible; and positioning. The information described above may be provided as related art for the purpose of aiding understanding of the present disclosure. No claim or determination is made as to whether any of the foregoing may be applied as prior art related to the present disclosure. In relation to the description of the drawings, the same or similar reference numerals may be used for identical or similar components. FIG. 1 is a block diagram of an electronic device in a network environment according to various embodiments. FIG. 2a is a block diagram of an electronic device for supporting legacy network communication and 5G network communication according to one embodiment of the present disclosure. FIG. 2b is a block diagram of an electronic device for supporting legacy network communication and 5G network communication according to one embodiment of the present disclosure. FIGS. 3a, FIGS. 3b, and FIGS. 3c are drawings illustrating wireless communication systems providing a network of legacy communication and/or 5G communication according to embodiments of the present disclosure. FIG. 4a is a diagram illustrating the concept of a frequency division multiplexing (DSS) method according to one embodiment of the present disclosure. FIG. 4b is a diagram illustrating the concept of a time division multiplexing method DSS according to one embodiment of the present disclosure. FIGS. 4c, FIGS. 4d, and FIGS. 4e are drawings illustrating examples of frequency allocation according to one embodiment of the present disclosure. FIG. 5a is a diagram showing the structure of a multimedia broadcast multicast service single frequency network (MBSFN) subframe to which a DSS according to one embodiment of the present disclosure is applied. FIG. 5b is a drawing showing the structure of a non-MBSFN subframe to which a DSS according to one embodiment of the present disclosure is applied. FIG. 5c is a drawing showing the structure of a non-MBSFN subframe to which a DSS according to one embodiment of the present disclosure is applied. FIG. 6 is a drawing showing the structure of a wireless frame according to one embodiment of the present disclosure. FIG. 7a is a drawing illustrating an electronic device and a remote communication network en