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EP-4738920-A2 - APPARATUS AND METHOD FOR SPECTRUM SHARING IN WIRELESS COMMUNICATION SYSTEM

EP4738920A2EP 4738920 A2EP4738920 A2EP 4738920A2EP-4738920-A2

Abstract

The present disclosure relates to a 5 th generation (5G) or pre-5G communication system for supporting a higher data transmission rate than a 4 th generation (4G) communication system such as long term evolution (LTE). According to various embodiments of the present disclosure, an apparatus operated by a distributed unit (DU) of a base station in a wireless communication system, comprises at least one transceiver and at least one processor. The at least one processor controls the at least one transceiver to transmit, via a DU interface, a message including information related to spectrum sharing to another node supporting a second cell that shares, with a first cell of the base station, a frequency band in a specified range. The information related to the spectrum sharing may include identification information regarding the first cell and identification information regarding the second cell.

Inventors

  • YOO, Seungbo

Assignees

  • Samsung Electronics Co., Ltd.

Dates

Publication Date
20260506
Application Date
20210618

Claims (12)

  1. A method performed by a first distributed unit, DU, of a first base station in a wireless communication system, the method comprising: transmitting, to a second DU of a second base station supporting a second cell that shares a frequency band of a specified range with a first cell of the first base station via a DU interface between the first DU of the first base station and the second DU of the second base station, a message including a setup request for the DU interface and information related to spectrum sharing, via the DU interface, wherein the information related to the spectrum sharing includes an identifier, ID, of the first DU of the first base station, and an identifier of the second DU of the second base station.
  2. The method of claim 1, further comprising: receiving a setup response corresponding to the setup request from the second DU of the second base station via the DU interface, and the information related to the spectrum sharing further includes a cell identifier, ID, related to the spectrum sharing and/or resource information related to the first cell or the second cell.
  3. The method of claim 1, further comprising: receiving a resource coordination request from the second DU of the second base station via the DU interface; and transmitting a resource coordination response corresponding to the resource coordination request to the second DU of the second base station via the DU interface, wherein the resource coordination request includes identification information on the first cell, identification information on the second cell, and pattern information determined based on a resource allocated to the first cell and a resource allocated to the second cell.
  4. The method of claim 1, further comprising transmitting a resource status report to the second DU of the second base station via the DU interface, wherein the resource status report includes at least one of identification information on the first cell, identification information on the second cell, the number of terminals connected to the first cell, a guaranteed bit-rate, GBR, by downlink, DL/uplink, UL, a non-GBR, a total physical resource block, PRB, usage, the number of heavy users, or a resource allocation failure rate.
  5. The method of claim 1, wherein the first cell is a cell related to new radio, NR, and the second cell is a cell related to long term evolution, LTE, and wherein the first base station comprises a next generation Node B, gNodeB, the gNB comprises a gNB CU, the first DU comprises a gNB-DU, and the second base station comprises an E-UTRAN Node B, eNodeB.
  6. A method performed by a second distributed unit, DU, of a second base station in a wireless communication system, the method comprising receiving, from a first DU of a first base station supporting a first cell via a DU interface between the first DU of the first base station and the second DU of the second base station, a message including a setup request for the DU interface and information related to spectrum sharing, via the DU interface, wherein the first cell of the first base station and a second cell of the second base station share a frequency band of a specified range, and wherein the information related to the spectrum sharing includes an identifier, ID, of the first DU of the first base station, and an identifier of the second DU of the second base station.
  7. The method of claim 6, further comprising: transmitting a setup response corresponding to the setup request to the first DU of the first base station via the DU interface, and the information related to the spectrum sharing further includes a cell identifier, ID, related to the spectrum sharing and/or resource information related to the first cell or the second cell.
  8. The method of claim 6, further comprising: transmitting a resource coordination request to the first DU of the first base station via the DU interface; and receiving a resource coordination response corresponding to the resource coordination request from the first DU of the first base station via the DU interface, wherein the resource coordination request includes identification information on the first cell, identification information on the second cell, and pattern information determined based on a resource allocated to the first cell and a resource allocated to the second cell.
  9. The method of claim 6, further comprising: receiving a resource status report from the first DU of the first base station via the DU interface, wherein the resource status report includes at least one of identification information on the first cell, identification information on the second cell, the number of terminals connected to the first cell, a guaranteed bit-rate, GBR, by downlink, DL/uplink, UL, a non-GBR, a total physical resource block, PRB, usage, the number of heavy users, or a resource allocation failure rate.
  10. The method of claim 6, wherein the first cell is a cell related to new radio, NR, and the second cell is a cell related to long term evolution, LTE, and wherein the first base station comprises a next generation Node B, gNodeB, the gNB comprises a gNB CU, the first DU comprises a gNB-DU, and the second base station comprises an E-UTRAN Node B, eNodeB.
  11. A first distributed unit, DU, of a first base station of a wireless communication system, the first DU comprising: at least one transceiver; and at least one processor, wherein the at least one processor is configured to perform one of the methods of claims 1 to 5.
  12. A second distributed unit, DU, of a second base station of a wireless communication system, the second DU comprising: at least one transceiver; and at least one processor, wherein the at least one processor is configured to perform one of the methods of claims 6-10.

Description

[Technical Field] The present disclosure relates generally to a wireless communication system, and more particularly to an apparatus and method for spectrum sharing in a wireless communication system. [Background Art] To meet the increasing demand for wireless data traffic after commercialization of a 4th generation (4G) communication system, efforts are being made to develop an improved 5th generation (5G) communication system or a pre-5G communication system. For this reason, the 5G communication system or the pre-5G communication system is called a beyond 4G Network communication system or a post long term evolution (LTE) system. In order to achieve a high data rate, the 5G communication system is being considered for implementation in an ultra high frequency (mmWave) band (e.g., such as a 60 gigabyte (60 GHz) band). In order to alleviate a path loss of radio waves and increase a propagation distance of radio waves in the ultra high frequency band, the 5G communication system is being discussed on beamforming, massive MIMO, full dimensional MIMO (FD-MIMO), an array antenna, analog beam-forming, and large scale antenna technologies. Also, for network improvement of the system, in the 5G communication system, technologies are being developed such as an evolved small cell, an advanced small cell, a cloud radio access network (cloud RAN), an ultra-dense network, device to device communication (D2D), wireless backhaul, moving network, cooperative communication, coordinated multi-points (CoMP), and reception interference cancellation, etc. Besides, in the 5G system, hybrid frequency shift keying and quadrature amplitude modulation (FQAM) and sliding window superposition coding (SWSC), which are advanced coding modulation (ACM) methods, and filter bank multi carrier (FBMC), non-orthogonal multiple access (NOMA), and sparse code multiple access (SCMA), which are advanced access technologies, are being developed. With the introduction of the 5G communication system, network and telecommunication operators are required to build an infrastructure for the 5G communication system. As such, the introduction of a new radio access technology (RAT) can act as a burden on the operators. In order to solve this burden, a technology of dynamic spectrum sharing (DSS) is being discussed. [Disclosure of Invention] [Technical Problem] Based on the above discussion, the present disclosure provides an apparatus and method for dynamic spectrum sharing (DSS) in a wireless communication system. Also, the present disclosure provides an apparatus and method for signaling related to spectrum sharing between DUs of a base station in a wireless communication system. [Solution to Problem] According to various embodiments of the present disclosure, a method performed by a distributed unit (DU) of a base station in a wireless communication system may include transmitting, via a DU interface, a message including information related to spectrum sharing, to another node supporting a second cell that shares a frequency band of a specified range with a first cell of the base station. The information related to the spectrum sharing may include identification information on the first cell and identification information on the second cell. According to various embodiments of the present disclosure, a method performed by a base station in a wireless communication system may include receiving, via a DU interface, a message including information related to spectrum sharing, from a distributed unit (DU) of another node supporting a first cell. The first cell and a second cell of the base station may share a frequency band of a specified range. The information related to the spectrum sharing may include identification information on the first cell and identification information on the second cell. According to various embodiments of the present disclosure, an apparatus performed by a distributed unit (DU) of a base station in a wireless communication system may include at least one transceiver, and at least one processor. The at least one processor may control the at least one transceiver to transmit, via a DU interface, a message including information related to spectrum sharing, to another node supporting a second cell that shares a frequency band of a specified range with a first cell of the base station. The information related to the spectrum sharing may include identification information on the first cell and identification information on the second cell. According to various embodiments of the present disclosure, an apparatus performed by a base station in a wireless communication system may include at least one transceiver, and at least one processor. The at least one processor may control the at least one transceiver to receive, via a DU interface, a message including information related to spectrum sharing, from a distributed unit (DU) of another node supporting a first cell. The first cell and a second cell of the base station may share a freq