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EP-4736546-A1 - METHOD FOR ADAPTING A TRANSMISSION POWER OF A TRANSMITTER DEVICE AND ASSOCIATED ELECTRONIC DEVICE

EP4736546A1EP 4736546 A1EP4736546 A1EP 4736546A1EP-4736546-A1

Abstract

The invention relates to a method for adapting a transmission power of a transmitter device (gNB) of a radio access network (RAN), the radio access network (RAN) being connected to a core network (CN). The method comprises: obtaining a value representative of a quality of service parameter of at least one portion of a connection between a user terminal (UE) and an application (cApp) accessed by the user terminal (UE) and connected to the core network via a data network (DN); and adapting the transmission power of the transmitter device according to the obtained value.

Inventors

  • KOCISZEWSKI, Kamil
  • YASSIN, Mohamad
  • COSTANZO, SALVATORE
  • DUPREZ, Marion
  • OZI B O, Adrian

Assignees

  • ORANGE

Dates

Publication Date
20260506
Application Date
20240626

Claims (14)

  1. [Claim 1] Method for adapting a transmission power of a transmitter device (gNB) of a radio access network (RAN), the radio access network (RAN) being connected to a core network (CN), the method being implemented by a computer application (xApp) of a controller (CTRL) of the radio access network (RAN) and comprising: - obtaining (S1040) a value representative of a quality of service parameter of at least one portion of connection between a user terminal (UE) and an application (cApp) accessed by said user terminal (UE) and connected to the core network via a data network (DN); and, - an adaptation (S1120, S1150, S1160) of the transmission power of the transmitting device (gNB) according to the value obtained.
  2. [Claim 2] The adaptation method of claim 1, wherein the quality of service parameter is a latency, and the adaptation (S1120, S1150, S1160) comprises increasing (S1150) the transmission power of the transmitting device (gNb) if the value representative of the latency has a value greater than a first threshold value, and decreasing (S1120) the transmission power of the transmitting device (gNb) if the value representative of the latency has a value less than a second threshold value, the second threshold value being less than the first threshold value.
  3. [Claim 3] The adaptation method of claim 1, wherein the quality of service parameter is a flow rate, and the adaptation (S1120, S1150, S1160) comprises an increase (S1150) in the transmission power of the transmitting device (gNb) if the value representative of the flow rate has a value lower than a first threshold value, and a decrease (S1120) in the transmission power of the transmitting device (gNb) if the value representative of the flow rate has a value lower than a first threshold value. value greater than a second threshold value, the second threshold value being greater than the first threshold value.
  4. [Claim 4] An adaptation method according to claim 2 or 3, wherein the first threshold value corresponds to a quality of service required by said user terminal (UE).
  5. [Claim 5] Adaptation method according to one of claims 1 to 4, further comprising a transmission step (S1160), by the computer application (xApp) of the controller (CTRL) and to a distributed unit (O-DU) associated with the transmitting device (gNB), of an instruction aimed at adapting the transmission power of said transmitting device (gNB).
  6. [Claim 6] Adaptation method according to one of claims 1 to 5, further comprising, prior to the step (S1040) of obtaining a value, a step (S1020) of identifying a user terminal for which the transmission power of the transmitting device must be adapted, the identified user terminal corresponding to said user terminal (UE).
  7. [Claim 7] Adaptation method according to one of claims 1 to 6, further comprising a transmission step (S1200), by the computer application (xApp) of the controller (CTRL) and to a graphical interface, of an instruction aimed at displaying the adapted transmission power and/or the value representative of the quality of service parameter.
  8. [Claim 8] Adaptation method according to one of claims 1 to 7, in which the at least one connection portion corresponds to the connection between the user terminal (UE) and an input module (UPF) of the core network (CN), or to the connection between the user terminal (UE) and the application (cApp) accessed by said user terminal (UE), obtaining (S1040) the value comprising receiving (S150), from a module (MOD_KP1) of the core network (CN), said value, and the transmission power being adapted when frequency and/or time resource units (PRB) allocated to said user terminal (UE) are used.
  9. [Claim 9] Adaptation method according to claim 8, in which the application (xApp) of the controller of the radio access network comprises an HTTP client, the module (MOD_KPI) of the core network comprises an HTTP server, and at least one function for obtaining a value representative of a quality of service parameter implemented by the module (MODJCPI) is exposed to the application (xApp) of the controller of the radio access network through an application programming interface (API), the method further comprising the following steps, prior to receiving (S150) the value: - access (S120), by the computer application (xApp) of the controller (CTRL) of the radio access network (RAN), to said application programming interface (API), and, - a transmission (S130), by the computer application (xApp) of the controller (CTRL) of the radio access network (RAN) and to the module (MOD_KPI) of the core network, of a request (REQ_F) to obtain a result of an application of the at least one function.
  10. [Claim 10] Adaptation method according to claim 8, in which the controller (CTRL) of the radio access network comprises an HTTP client accessible by the application (xApp) of the controller of the radio access network; the module (MOD_KP1) of the core network (CN) comprises an HTTP server; and at least one function for obtaining a value representative of a quality of service parameter implemented by the module (MOD_KPI) is exposed to the controller (CTRL) through an application programming interface (API), the method further comprising the following steps, prior to receiving (S150) the value: - access (S120), by the controller (CTRL) of the radio access network (RAN), to said application programming interface (API), - a transmission (S130), by the controller (CTRL) of the radio access network (RAN) and to the module (MOD_KP1) of the core network, of a request [REQ_F for obtaining a result from an application of at least one function.
  11. [Claim 11] Adaptation method according to one of claims 1 to 10, in which the value obtained is representative of a prediction of the latency or the flow rate of the connection.
  12. [Claim 12] Computer program comprising instructions for implementing an adaptation method according to any one of claims 1 to 11, when said program is executed by a computer.
  13. [Claim 13] A computer-readable recording medium on which a computer program according to claim 12 is recorded.
  14. [Claim 14] Electronic device (D_CTRL) comprising a radio access network [RAN] controller [CTRL] configured to adapt a transmission power of a transmitter device [gNB] of a radio access network [RAN], the radio access network [RAN] being connected to a core network [CN], the controller comprising a computer application [xApp] comprising: - a module for obtaining [MOD_OBT] a value representative of a quality of service parameter of at least one portion of the connection between a user terminal [UE] and an application [cApp] accessed by said user terminal [UE] and connected to the core network via a data network [DN]; and, - an adaptation module [MOD_AD] of the transmission power of the transmitting device [gNB] according to the value obtained.

Description

Description Title of the invention: Method for adapting the transmission power of a transmitting device and associated electronic device Technical Domain [0001] The present invention belongs to the general field of telecommunications, and in particular wireless communications implemented on radio-type networks such as mobile networks [e.g. 4G, 5G, B5G, etc.), etc. It relates more particularly to a method for adapting a transmission power of a transmitting device. It also relates to an electronic device comprising a radio access network controller configured to implement such a method. Previous technique [0002] In order to adapt to the continuous and ever faster growth of data traffic emitted by wireless telecommunications systems, different technologies are currently being implemented, and are still being improved with a view to optimal exploitation in the years to come. [0003] The architecture of wireless telecommunications networks currently deployed or in the process of being deployed is defined by the standardization consortium known as 3GPP [Third Generation Partnership Project]. This is the case in particular for so-called second generation [“2G or GSM”), third generation [“3G”), and fourth generation [“4G”) wireless networks. [0004] Up to the fourth generation, the network architectures defined by the 3GPP consortium are most often based on specific equipment, dedicated to precise functionalities, whether at the level of the access network or the core network, in particular with regard to the transmission of packets from or to a mobile terminal. [0005] The lack of flexibility and scalability inherent in this type of architecture has led the 3GPP consortium to consider adopting more flexible architectures for the so-called "5G" generation of wireless networks, in order to be able to meet quickly to extremely diverse demands in terms of traffic and/or quality of service. [0006] To meet these extremely diverse constraints, 5G relies in particular on the division of network functions into services, and on the virtualization of these network functions. The virtualization of network functions consists of deploying functions usually performed by dedicated and specific equipment on generic servers located in data centers [“data centers” according to Anglo-Saxon terminology]. These functions are then implemented in the form of computer programs that can be easily activated, deactivated and configured according to needs. Memory resources or computing capacity can then be allocated dynamically. [0007] The division of network functions into services and the virtualization of these network functions aim in particular to improve the energy efficiency of a 5G cellular network. This efficiency criterion is crucial in the context of 5G where a significant increase in data traffic is envisaged. Recent studies on energy consumption in such networks show, however, that approximately 80% of the energy is consumed by the base stations of these networks. Also, different strategies have been defined which aim to adapt the transmission power of a base station, or even to put it on standby when not in use. [0008] Thus, a base station is for example put on standby or woken up depending on a distance between user terminals and the base station to which they are attached. Other strategies aim to put a base station on standby when the volume of data exchanged is less than a predetermined value. A base station can also be put on standby for a determined period of time when it has been previously established - for example using statistics - that the volume of data exchanged is relatively low during this period [for example, during the night). Finally, other strategies are called multi-criteria since they aim for example to minimize a certain energy consumption, while maximizing the profit of the operators in charge of these networks. [0009] However, these sleep and wake-up decisions are implemented at a high level, i.e., for a large number of user terminals, and are therefore not not specific to a given user terminal. A fortiori, the different strategies for adapting the transmission power of base stations considered so far do not make it possible to improve the energy efficiency of a radio access network, while also ensuring a certain quality of service to a given user terminal. Disclosure of the invention [0010] The present invention aims to remedy all or part of the drawbacks of the prior art, in particular those set out above, by proposing a solution which makes it possible both to improve the energy efficiency of a radio access network, whilst also ensuring a certain quality of service for a given user terminal. [0011] For this purpose, and according to a first aspect, the invention relates to a method for adapting a transmission power of a transmitting device of a radio access network, the radio access network being connected to a core network. The method is implemented by a computer application of a controller of the radio