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WO-2026094241-A1 - BASE STATION, NETWORK NODE, AND COMMUNICATION METHOD

WO2026094241A1WO 2026094241 A1WO2026094241 A1WO 2026094241A1WO-2026094241-A1

Abstract

This base station comprises: a transmission unit that transmits, to a network node, a first message requesting a first key performance index relating to a current energy price for the base station, and transmits, to another base station, a second message requesting a second key performance index relating to a current energy price for the other base station; a reception unit that receives, from the network node, a third message including the first key performance index, and receives, from the other base station, a fourth message including the second key performance index; and a control unit that determines, on the basis of the first key performance index and the second key performance index, whether or not to execute a handover to the other base station.

Inventors

  • TAMURA, RYOJI
  • KUROIWA, Fumito
  • BAKHSHI, Bahador

Assignees

  • 株式会社ＮＴＴドコモ

Dates

Publication Date
20260507
Application Date
20241031

Claims (5)

  1. A first message is sent to the network node requesting a first key performance index for the current energy price for its own device. A transmitting unit that transmits a second message to another base station requesting a second key performance index relating to the current energy price for the other base station, The network node receives a third message including the first key performance index, A receiving unit that receives a fourth message including the second key performance index from the aforementioned other base station, A control unit that determines whether or not to perform a handover to the other base station based on the first key performance index and the second key performance index, A base station having
  2. If the control unit decides to perform a handover, The transmitting unit transmits a fifth message to the other base station requesting a handover, which includes information indicating that the reason for performing the handover is related to energy prices. The base station according to claim 1.
  3. A first message is sent to the network node requesting a first key performance index for the current energy price for its own device. A transmitting unit that transmits a second message to another base station requesting a second key performance index relating to the current energy price for the other base station, A receiving unit that receives a third message, including a handover request, from the aforementioned other base station, A control unit that determines whether or not to accept the handover request, A base station having
  4. A receiving unit that receives a first message from a base station requesting a key performance index relating to the current energy price for the base station, A transmitting unit that transmits a second message including the key performance index to the base station, A network node that has
  5. The steps include sending a first message to a network node requesting a first key performance index for the current energy price for its own device, The steps include sending a second message to another base station requesting a second key performance index relating to the current energy price for the other base station, The steps include receiving a third message containing the first key performance index from the network node, The steps include receiving a fourth message containing the second key performance index from the other base station, A step of determining whether or not to perform a handover to the other base station based on the first key performance index and the second key performance index, A communication method performed by a base station having [a certain feature].

Description

Base station, network node, and communication method This invention relates to a base station, a network node, and a communication method in a communication system. The 3rd Generation Partnership Project (3GPP) is exploring wireless communication methods known as 5G or NR (New Radio) (hereinafter referred to as "5G" or "NR") to achieve further increases in system capacity, higher data transmission speeds, and even lower latency in the wireless section. To meet the requirements of achieving throughput of 10 Gbps or more while reducing wireless section latency to less than 1 ms, various wireless technologies are being investigated for 5G. In NR (Non-Term Evolution), a network architecture is being considered that includes 5GC (5G Core Network) or 5GS (5G System), which corresponds to EPC (Evolved Packet Core), the core network in the LTE (Long Term Evolution) network architecture, and NG-RAN (Next Generation - Radio Access Network), which corresponds to E-UTRAN (Evolved Universal Terrestrial Radio Access Network), the RAN (Radio Access Network) in the LTE network architecture (see, for example, Non-Patent Document 1). For telecommunications operators, reducing energy consumption and the resulting carbon dioxide emissions is a critical issue. Furthermore, from a business perspective, energy costs represent a significant portion of operating expenses (OPEX). In the current energy market, energy prices are not fixed but fluctuate, set and controlled by the service providers. For example, electricity providers may set higher rates for daytime electricity than nighttime electricity, and electricity rates may vary by region. Alternatively, telecommunications companies may have extremely cheap (or even free) power systems powered by solar energy. This is a diagram illustrating an example of a communication system.This diagram illustrates an example of a communication system in a roaming environment.This figure illustrates the network architecture in an embodiment of the present invention.This figure shows an example of a sequence diagram in an embodiment of the present invention.This figure shows an example of the functional configuration of a base station 10 and a network node 30 in an embodiment of the present invention.This figure shows an example of the functional configuration of terminal 20 in an embodiment of the present invention.This figure shows an example of the hardware configuration of a base station 10 and a terminal 20 in an embodiment of the present invention.This figure shows an example of the configuration of a vehicle 2001 in an embodiment of the present invention. The embodiments of the present invention will be described below with reference to the drawings. Note that the embodiments described below are examples, and the embodiments to which the present invention applies are not limited to those described below. In the operation of the wireless communication system according to the embodiments of the present invention, existing technologies will be used as appropriate. However, such existing technologies include, for example, existing LTE, but are not limited to existing LTE. Furthermore, the term "LTE" as used herein has a broad meaning, including LTE-Advanced, LTE-Advanced and later technologies (e.g., NR), or wireless LAN (Local Area Network), unless otherwise specified. Furthermore, in the embodiments of the present invention, "configuring" wireless parameters may mean that predetermined values are pre-configured, or that wireless parameters notified from the network node 30 or terminal 20 are configured. Figure 1 is a diagram illustrating an example of a communication system. As shown in Figure 1, the communication system consists of a terminal 20 (UE) and multiple network nodes 30. Hereafter, one network node 30 will be assumed to correspond to each function; however, one network node 30 may implement multiple functions, or multiple network nodes 30 may implement a single function. Furthermore, the "connection" described below may refer to a logical connection or a physical connection. Also, in the following description, "/" means "and/or" unless otherwise specified or unless the context clearly indicates a different meaning. The RAN (Radio Access Network) is a network node 30 having wireless access functionality, which may include a base station 10, and is connected to the UE, AMF (Access and Mobility Management Function), and UPF (User Plane Function). The AMF is a network node 30 having functions such as RAN interface termination, NAS (Non-Access Stratum) termination, registration management, connection management, reachability management, and mobility management. The UPF is a network node 30 interconnected with the DN (Data Network), acting as a PDU (Protocol Data Unit) session point to the outside world, performing packet routing and forwarding, and handling user plane QoS (Quality of Service) handling. The UPF and DN constitute a network slice. In the wireless communication network o