Systems and methods for energy state control
The system addresses inefficiencies in 5G networks by providing real-time, granular RAN energy saving states to UEs and NFs, optimizing energy usage and reducing costs.
Patent Information
- Application Number
- PCT/CN2024/088020
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2025-07-31
AI Technical Summary
Existing 5G networks lack a fine-grained and real-time mechanism for managing Radio Access Network (RAN) energy saving states, leading to inefficiencies in energy consumption and lack of awareness among Network Functions (NFs) and User Equipment (UEs about RAN energy status.
A system and method for defining and delivering more granular RAN energy saving states to UEs and NFs in real-time, using RAN energy saving state information including indices and parameters such as turned-off features, preferred features, start/stop times, and RAN areas, communicated through AMF, NRF, and PCF entities.
Enhances energy efficiency by allowing NFs to adjust policies and UEs to optimize operations based on real-time RAN energy states, reducing operational costs and environmental impact.
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Figure CN2024088020_31072025_PF_FP_ABST
Abstract
Description
SYSTEMS AND METHODS FOR ENERGY STATE CONTROLTECHNICAL FIELD
[0001] The disclosure relates generally to wireless communications, including but not limited to systems and methods for energy state control.BACKGROUND
[0002] The standardization organization Third Generation Partnership Project (3GPP) is currently in the process of specifying a new Radio Interface called 5G New Radio (5G NR) as well as a Next Generation Packet Core Network (NG-CN or NGC) . The 5G NR will have three main components: a 5G Access Network (5G-AN) , a 5G Core Network (5GC) , and a User Equipment (UE) . In order to facilitate the enablement of different data services and requirements, the elements of the 5GC, also called Network Functions, have been simplified with some of them being software based, and some being hardware based, so that they could be adapted according to need.SUMMARY
[0003] The example embodiments disclosed herein are directed to solving the issues relating to one or more of the problems presented in the prior art, as well as providing additional features that will become readily apparent by reference to the following detailed description when taken in conjunction with the accompany drawings. In accordance with various embodiments, example systems, methods, devices and computer program products are disclosed herein. It is understood, however, that these embodiments are presented by way of example and are not limiting, and it will be apparent to those of ordinary skill in the art who read the present disclosure that various modifications to the disclosed embodiments can be made while remaining within the scope of this disclosure.
[0004] At least one aspect is directed to a system, method, apparatus, or a computer-readable medium of the following. A method can include sending, by a wireless communication node to a wireless communication device or one or more core network entities, a message including Radio Access Network (RAN) energy saving state information. The RAN energy saving state information is related to a power state of the wireless communication node. The RAN energy saving state information includes at least one RAN energy saving state index and zero or more corresponding parameters. The at least one RAN energy saving state index indicates a current RAN energy saving state.
[0005] The parameters include at least one of: features of the wireless communication node to be turned off; features of the wireless communication node not preferred; a starting time at which the wireless communication node enters an energy saving state; a stopping time at which the wireless communication node leaves the energy saving state; an RAN area; or RAN parameters. The one or more core network entities include an Access and Mobility Management Function (AMF) entity. The AMF entity sends the RAN energy saving state inform to a Network Function (NF) entity. The NF entity sends the RAN energy saving state information to the PCF entity, the PCF entity creates a PCC rule or UE policy according to the RAN energy saving state information. The one or more core network entities include a Network Repository Function (NRF) entity.
[0006] In response to an NF entity discovering a status of the wireless communication node from the NRF entity, the NRF entity sends the RAN energy saving state information to the NF entity. Prior to sending the RAN energy saving state information, an NF entity requests the RAN energy saving state information from the wireless communication node. The wireless communication device receives an RAN energy saving state configuration used to define the RAN energy saving state information. The wireless communication node broadcasts the at least one RAN energy saving state index in an air interface. The wireless communication device receives the RAN energy saving state configuration through local configuration, an RRC message send from the wireless communication node, or a NAS message send from an AMF entity that receives the RAN energy saving state configuration from the wireless communication node.BRIEF DESCRIPTION OF THE DRAWINGS
[0007] Various example embodiments of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for purposes of illustration only and merely depict example embodiments of the present solution to facilitate the reader’s understanding of the present solution. Therefore, the drawings should not be considered limiting of the breadth, scope, or applicability of the present solution. It should be noted that for clarity and ease of illustration, these drawings are not necessarily drawn to scale.
[0008] FIG. 1 illustrates an example cellular communication network in which techniques disclosed herein may be implemented, in accordance with an embodiment of the present disclosure;
[0009] FIG. 2 illustrates a block diagram of an example base station and a user equipment device, in accordance with some embodiments of the present disclosure;
[0010] FIG. 3 depicts an a potential 5G Energy efficiency and saving architecture, in accordance with an embodiment of the present disclosure;
[0011] FIG. 4 depicts a flowchart for a radio Access Network (RAN) to provide an energy saving state to an Access and Mobility management Function (AMF) , in accordance with an embodiment of the present disclosure;
[0012] FIG. 5 depicts a flowchart for the RAN to register the RAN energy saving state information to the network repository Function (NRF) , in accordance with an embodiment of the present disclosure;
[0013] FIG. 6 depicts a flowchart for the RAN to register the RAN energy saving state information to the NRF, in accordance with an embodiment of the present disclosure;
[0014] FIG. 7 depicts a flowchart for the RAN to provide the energy saving state to the UE, in accordance with an embodiment of the present disclosure;
[0015] FIG. 8 illustrates a flowchart of a method for CSI feedback for Energy state control, in accordance with an embodiment of the present disclosure.DETAILED DESCRIPTION
[0016] A. Mobile Communication Technology and Environment
[0017] FIG. 1 illustrates an example wireless communication network, and / or system, 100 in which techniques disclosed herein may be implemented, in accordance with an embodiment of the present disclosure. In the following discussion, the wireless communication network 100 may be any wireless network, such as a cellular network or a narrowband Internet of things (NB-IoT) network, and is herein referred to as “network 100. ” Such an example network 100 includes a base station 102 (hereinafter “BS 102” ; also referred to as wireless communication node) and a user equipment device 104 (hereinafter “UE 104” ; also referred to as wireless communication device) that can communicate with each other via a communication link 110 (e.g., a wireless communication channel) , and a cluster of cells 126, 130, 132, 134, 136, 138 and 140 overlaying a geographical area 101. In FIG. 1, the BS 102 and UE 104 are contained within a respective geographic boundary of cell 126. Each of the other cells 130, 132, 134, 136, 138 and 140 may include at least one base station operating at its allocated bandwidth to provide adequate radio coverage to its intended users.
[0018] For example, the BS 102 may operate at an allocated channel transmission bandwidth to provide adequate coverage to the UE 104. The BS 102 and the UE 104 may communicate via a downlink radio frame 118, and an uplink radio frame 124 respectively. Each radio frame 118 / 124 may be further divided into sub-frames 120 / 127 which may include data symbols 122 / 128. In the present disclosure, the BS 102 and UE 104 are described herein as non-limiting examples of “communication nodes, ” generally, which can practice the methods disclosed herein. Such communication nodes may be capable of wireless and / or wired communications, in accordance with various embodiments of the present solution.
[0019] FIG. 2 illustrates a block diagram of an example wireless communication system 200 for transmitting and receiving wireless communication signals (e.g., OFDM / OFDMA signals) in accordance with some embodiments of the present solution. The system 200 may include components and elements configured to support known or conventional operating features that need not be described in detail herein. In one illustrative embodiment, system 200 can be used to communicate (e.g., transmit and receive) data symbols in a wireless communication environment such as the wireless communication environment 100 of FIG. 1, as described above.
[0020] System 200 generally includes a base station 202 (hereinafter “BS 202” ) and a user equipment device 204 (hereinafter “UE 204” ) . The BS 202 includes a BS (base station) transceiver module 210, a BS antenna 212, a BS processor module 214, a BS memory module 216, and a network communication module 218, each module being coupled and interconnected with one another as necessary via a data communication bus 220. The UE 204 includes a UE (user equipment) transceiver module 230, a UE antenna 232, a UE memory module 234, and a UE processor module 236, each module being coupled and interconnected with one another as necessary via a data communication bus 240. The BS 202 communicates with the UE 204 via a communication channel 250, which can be any wireless channel or other medium suitable for transmission of data as described herein.
[0021] As would be understood by persons of ordinary skill in the art, system 200 may further include any number of modules other than the modules shown in FIG. 2. Those skilled in the art will understand that the various illustrative blocks, modules, circuits, and processing logic described in connection with the embodiments disclosed herein may be implemented in hardware, computer-readable software, firmware, or any practical combination thereof. To clearly illustrate this interchangeability and compatibility of hardware, firmware, and software, various illustrative components, blocks, modules, circuits, and steps are described generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware, or software can depend upon the particular application and design constraints imposed on the overall system. Those familiar with the concepts described herein may implement such functionality in a suitable manner for each particular application, but such implementation decisions should not be interpreted as limiting the scope of the present disclosure.
[0022] In accordance with some embodiments, the UE transceiver 230 may be referred to herein as an “uplink” transceiver 230 that includes a radio frequency (RF) transmitter and a RF receiver each comprising circuitry that is coupled to the antenna 232. A duplex switch (not shown) may alternatively couple the uplink transmitter or receiver to the uplink antenna in time duplex fashion. Similarly, in accordance with some embodiments, the BS transceiver 210 may be referred to herein as a “downlink” transceiver 210 that includes a RF transmitter and a RF receiver each comprising circuity that is coupled to the antenna 212. A downlink duplex switch may alternatively couple the downlink transmitter or receiver to the downlink antenna 212 in time duplex fashion. The operations of the two transceiver modules 210 and 230 may be coordinated in time such that the uplink receiver circuitry is coupled to the uplink antenna 232 for reception of transmissions over the wireless transmission link 250 at the same time that the downlink transmitter is coupled to the downlink antenna 212. Conversely, the operations of the two transceivers 210 and 230 may be coordinated in time such that the downlink receiver is coupled to the downlink antenna 212 for reception of transmissions over the wireless transmission link 250 at the same time that the uplink transmitter is coupled to the uplink antenna 232. In some embodiments, there is close time synchronization with a minimal guard time between changes in duplex direction.
[0023] The UE transceiver 230 and the base station transceiver 210 are configured to communicate via the wireless data communication link 250, and cooperate with a suitably configured RF antenna arrangement 212 / 232 that can support a particular wireless communication protocol and modulation scheme. In some illustrative embodiments, the UE transceiver 210 and the base station transceiver 210 are configured to support industry standards such as the Long Term Evolution (LTE) , 5G NR, and emerging 6G standards, and the like. It is understood, however, that the present disclosure is not necessarily limited in application to a particular standard and associated protocols. Rather, the UE transceiver 230 and the base station transceiver 210 may be configured to support alternate, or additional, wireless data communication protocols, including future standards or variations thereof.
[0024] In accordance with various embodiments, the BS 202 may be an evolved node B (eNB) , a serving eNB, a target eNB, a gNB (The Next Generation Node B) , a femto station, or a pico station, for example. In some embodiments, the UE 204 may be embodied in various types of user devices such as a mobile phone, a smart phone, a personal digital assistant (PDA) , tablet, laptop computer, wearable computing device, etc. The processor modules 214 and 236 may be implemented, or realized, with a general purpose processor, a content addressable memory, a digital signal processor, an application specific integrated circuit, a field programmable gate array, any suitable programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof, designed to perform the functions described herein. In this manner, a processor may be realized as a microprocessor, a controller, a microcontroller, a state machine, or the like. A processor may also be implemented as a combination of computing devices, e.g., a combination of a digital signal processor and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a digital signal processor core, or any other such configuration.
[0025] Furthermore, the steps of a method or algorithm described in connection with the embodiments disclosed herein may be embodied directly in hardware, in firmware, in a software module executed by processor modules 214 and 236, respectively, or in any practical combination thereof. The memory modules 216 and 234 may be realized as RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. In this regard, memory modules 216 and 234 may be coupled to the processor modules 210 and 230, respectively, such that the processors modules 210 and 230 can read information from, and write information to, memory modules 216 and 234, respectively. The memory modules 216 and 234 may also be integrated into their respective processor modules 210 and 230. In some embodiments, the memory modules 216 and 234 may each include a cache memory for storing temporary variables or other intermediate information during execution of instructions to be executed by processor modules 210 and 230, respectively. Memory modules 216 and 234 may also each include non-volatile memory for storing instructions to be executed by the processor modules 210 and 230, respectively.
[0026] The network communication module 218 generally represents the hardware, software, firmware, processing logic, and / or other components of the base station 202 that enable bi-directional communication between base station transceiver 210 and other network components and communication nodes configured to communication with the base station 202. For example, network communication module 218 may be configured to support internet or WiMAX traffic. In a typical deployment, without limitation, network communication module 218 provides an 802.3 Ethernet interface such that base station transceiver 210 can communicate with a conventional Ethernet based computer network. In this manner, the network communication module 218 may include a physical interface for connection to the computer network (e.g., Mobile Switching Center (MSC) ) . The terms “configured for, ” “configured to” and conjugations thereof, as used herein with respect to a specified operation or function, refer to a device, component, circuit, structure, machine, signal, etc., that is physically constructed, programmed, formatted and / or arranged to perform the specified operation or function.
[0027] The Open Systems Interconnection (OSI) Model (referred to herein as, “open system interconnection model” ) is a conceptual and logical layout that defines network communication used by systems (e.g., wireless communication device, wireless communication node) open to interconnection and communication with other systems. The model is broken into seven subcomponents, or layers, each of which represents a conceptual collection of services provided to the layers above and below it. The OSI Model also defines a logical network and effectively describes computer packet transfer by using different layer protocols. The OSI Model may also be referred to as the seven-layer OSI Model or the seven-layer model. In some embodiments, a first layer may be a physical layer. In some embodiments, a second layer may be a Medium Access Control (MAC) layer. In some embodiments, a third layer may be a Radio Link Control (RLC) layer. In some embodiments, a fourth layer may be a Packet Data Convergence Protocol (PDCP) layer. In some embodiments, a fifth layer may be a Radio Resource Control (RRC) layer. In some embodiments, a sixth layer may be a Non Access Stratum (NAS) layer or an Internet Protocol (IP) layer, and the seventh layer being the other layer.
[0028] Various example embodiments of the present solution are described below with reference to the accompanying figures to enable a person of ordinary skill in the art to make and use the present solution. As would be apparent to those of ordinary skill in the art, after reading the present disclosure, various changes or modifications to the examples described herein can be made without departing from the scope of the present solution. Thus, the present solution is not limited to the example embodiments and applications described and illustrated herein. Additionally, the specific order or hierarchy of steps in the methods disclosed herein are merely example approaches. Based upon design preferences, the specific order or hierarchy of steps of the disclosed methods or processes can be re-arranged while remaining within the scope of the present solution. Thus, those of ordinary skill in the art will understand that the methods and techniques disclosed herein present various steps or acts in a sample order, and the present solution is not limited to the specific order or hierarchy presented unless expressly stated otherwise.
[0029] B. Systems and Methods for Energy State Control
[0030] The energy saving mode describes the energy saving status of NG-RAN (or cell of NG-RAN) and 5GC Network Function (NF) . So far, there are two values for the energy saving mode, 1) energySaving state: state in which a Network function or cell of NG-RAN are powered-down. 2) notEnergySaving state: state when no energy saving in progress (i.e., in the normal state) . The energy saving mode of RAN is very important for the 5GS and UE. However, only OAM system know the RAN energy saving state (not real-time) . The NF in the 5GC does not know this information. Moreover, the granularity of the energy saving mode is too coarse and cannot flexibly reflect the RAN status.
[0031] Aspects of the technical solutions depict a method to transfer the RAN energy saving mode to UE and NF in real-time manner. Electrical energy consumption is an important factor in the operating costs of Mobile Network Operators (MNOs) . According to statistics, electricity bills are already the highest expense among operators' operation and maintenance costs. Climate change and increasing energy consumption are prompting mobile network operators to improve energy efficiency and energy saving. In some aspects of the technical solution described herein, NG-RAN and RAN refer to the same concept.
[0032] In the 3GPP, some mechanisms have been studied to improve energy saving in the 5G system. For example, TS 28.310 defines the energy saving mode which describes the energy saving status of NG-RAN (or cell of NG-RAN) and 5GC Network Function (NF) . In some situations, the NF or RAN (or cells of RAN) can goes into energySaving state to save the energy.
[0033] However, the existing mechanism has many shortcomings. First, there are only two values for the energy saving mode, 1) energySaving state: state in which a Network function or cell of NG-RAN are powered-down. 2) notEnergySaving state: state when no energy saving in progress. The granularity of the energy saving mode is too coarse and cannot flexibly reflect the RAN status. Second, only OAM system know the RAN energy saving state (not real-time) . The NF in the 5GC does not know this information. Third, the UE does not know the energy saving status of RAN (current cell of RAN) .
[0034] Aspects of the technical solutions depict a method to define more fine-grained RAN energy saving mode and deliver RAN energy saving mode to UEs and NFs in real time. FIG. 3 depicts an a potential 5G Energy efficiency and saving architecture. A user equipment (UE) may access 5GS and obtains services via NG-RAN and interacts with an Access and Mobility Control Function (AMF) of the core network via the NAS signaling. The NG-RAN (i.e., 5G Radio Access Network) may be responsible for the air interface resource scheduling and air interface connection management of the network to which the UE is accessed to.
[0035] An Access and Mobility Management (e.g., AMF) function can include the following functionalities: Registration management, Connection management, Reachability management and Mobility Management. The AMF performs the access authentication and access authorization.
[0036] A Session Management function (e.g., SMF) can include the following functionalities: Session Management (e.g., Session establishment, modify and release) , UE IP address allocation &management, Selection and control of UP function, downlink data notification, etc. A UPF (i.e., User plane Function) can include the following functionalities: Anchor point for Intra- / Inter-RAT mobility, Packet routing &forwarding, Traffic usage reporting, QoS handling for user plane, Downlink packet buffering and downlink data notification triggering, etc. A UDM (i.e., the Unified Data Management) can manage the subscription profile for the UEs. The subscription includes the data used for mobility management, session management. The AMF and SMF get the subscription from the UDM.
[0037] A PCF (i.e., Policy Control Function) can include the following functionality: Supports unified policy framework to govern network behavior, Provides policy rules to Control Plane function (s) to enforce the policy rule. An AF / AS (i.e., Application Function / Application Server) can provide the service over 5G system. A NRF (i.e., Network Repository Function) can support NF instance profiles registration and service discovery and can receive NF Discovery Request from Consumer NF, and provides the information of the discovered NF instances to the Consumer NF.
[0038] An EECF (i.e., Energy Efficiency and Saving Control Function) can collect Energy related information in the 5GS, including energy consumption related information, energy efficiency related information, energy saving related information. The EECF can transmit the Energy information to the authorized consumers. A NWDAF (i.e., Network Data Analytics Function) can support data collection from NF (i.e., network function) / AF / OAM, information retrieval from data repositories (e.g., UDR) . The NWDAF can support Machine Learning (ML) model training, information analytics and can provision the analytics data to NF and AF.
[0039] Aspects of the technical solutions depict a method to define more fine-grained RAN energy saving mode and deliver RAN energy saving mode to UEs and NFs in real time. The network in this technical solution refers to a mobile network, which can be a 4G (EPS) , 5G or future 6G network. Although the embodiments of aspects of the technical solutions described herein all use the 5G system as an example, it can also be applied to 4G and 6G networks.
[0040] Aspects of the technical solutions described herein, define the RAN energy saving state information. The technical solutions contain RAN energy saving state index and optional corresponding parameters.
[0041] - RAN energy saving state index can describe the current RAN energy saving state. The value can be an enumeration type, such as, very high, high, medium, low, very low, or a range of values, such as 1 to 100.
[0042] - Corresponding parameters and settings:
[0043] ■ Features which are turned off. The RAN turns of these features in current RAN energy saving state although the RAN supports these features (e.g., the features list can be sensing, ranging, time synchronization …etc. ) .
[0044] ■ Features which are not preferred. Although the RAN supports one or more features, the RAN is expected to reduce the usage of these features in the current RAN power saving state. (the features list can be sensing, ranging, time synchronization …etc. ) .
[0045] ■ Start time, stop time can indicate the start time and end time when the RAN enters this energy saving state.
[0046] ■ RAN area, e.g. cell list, TAs.
[0047] ■ RAN Parameters.
[0048] Aspects of the technical solution described herein defines the RAN energy saving state configuration. This configuration contains all the energy saving state information which the RAN support.
[0049] The RAN Energy saving state configuration contains at least one RAN energy saving state information. As shown below:
[0050] RAN Energy saving state configuration = {
[0051] {RAN energy saving state index: high, Parameters and settings (turned off feature list, , , ) } ;
[0052] {RAN energy saving state index: medium, Parameters and settings (turned off feature list, , , ) } ;
[0053] {RAN energy saving state index: low, Parameters and settings (turned off feature list, , , ) } ;
[0054] }
[0055] Embodiment one
[0056] In this embodiment, the RAN provides the RAN energy saving state information to AMF. The AMF further provides this information to other NF (e.g., SMF / NWDAF / EECF / TSCTSF) . FIG. 4 depicts a flowchart 400 for a RAN to provide an energy saving state to an AMF. At step 401, the RAN node can send the current RAN energy saving state information to AMF. The RAN node can perform this step via NG setup request message, RAN configuration Update message, or NGAP message. At step 402, the AMF can send the RAN energy saving state information to PCF in the AM Policy Association Modification / Establishment request for the impacted UEs. The AMF may invoke the Npcf_AMPolicyControl_Create / Update Service operation to send the RAN energy saving state information.
[0057] At step 403, the PCF can create the AM policy according to the received RAN energy saving state information and send to AMF. The AM policy may include the UE-AMBR, RFSP index and / or service area restriction, change of NSSAI, etc. At step 404, the NF (e.g. SMF, NWDAF, EECF, and TSCTSF) may subscribe / request the RAN energy state. The NF provides the RAN ID in this request. The NF may invoke the existing Namf_EventExposure_Subscribe service operate, or new service operation. Step 404 can be performed before step 401. At step 405, the AMF can send / notify the current RAN energy saving state information to consumer NF. The Consumer NF can perform subsequent step according to the current RAN energy saving state information (e.g., disable the turned off features, setting the session parameters) .
[0058] At step 406, the SMF can send the RAN energy saving state information to PCF in the SM Policy Association Modification / Establishment request. The SMF may invoke the Npcf_SMPolicyControl_Create / Update Service operation to send the RAN energy saving state information. At step 407, the PCF create the PCC rule according to the received RAN energy saving state information and send to SMF.
[0059] Embodiment Two
[0060] In this embodiment, the RAN register the RAN energy saving state information to NRF. The 5GC NF query the RAN energy saving state information from NRF. FIG. 5 depicts a flowchart 500 for the RAN to register the RAN energy saving state information to the NRF.
[0061] At step 501, the RAN node registers the current RAN energy saving state information to NRF. The RAN node can perform this step via Nnrf_NFManagement_NFRegister service operation. At step 502, The NF (e.g., SMF, NWDAF, EECF, and TSCTSF) may discover the RAN node status from the NRF. The NF may invoke the Nnrf_NFManagement_NFStatusSubscribe service operate, or new service operation. Step 502 can be performed before step 501.
[0062] At step 503, the NRF can send / notify the current RAN energy saving state information to consumer NF. The Consumer NF can perform subsequent step according to the current RAN energy saving state information (e.g., disable the turned off features, setting the session parameters) . For example, the SMF can perform the step 406 and 407 in the FIG. 4.
[0063] Embodiment Three
[0064] In this embodiment, the RAN can provide the RAN energy saving state information to NF (SMF / EECF / NWDAF) . FIG. 6 depicts a flowchart 600 for the RAN to register the RAN energy saving state information to the NRF.
[0065] At step 601, the NF (e.g., SMF / NWDAF / EECF) can subscribes / request the RAN energy saving state information. The message may be sent to RAN via AMF (e.g., SMF can send the request in the N2 container to the RAN via AMF) or directly. At step 602, the RAN node can send the current RAN energy saving state information to the NF. The message may be sent to RAN via AMF or directly. At step 603, if the step 601 is performed by EECF / NWDAF, the 5G NF (e.g., SMF / TSCTSF) may query the RAN energy saving state information to EECF / NWDAF. At step 604, the EECF / NWDAF can send the current RAN energy saving state information to NF. If the NF is the SMF, it can perform the step 406 and 407 in the FIG. 4.
[0066] Embodiment Four
[0067] In this embodiment, the UE obtains the RAN Energy saving state configuration. The RAN broadcast the RAN / cell energy saving state index in the air interface, e.g. in the SIB. According to RAN / cell energy saving state index and RAN Energy saving state configuration, the UE know the RAN / cell current Energy saving state information. The UE can perform the cell selection accordingly. FIG. 7 depicts a flowchart 700 for the RAN to provide the energy saving state to the UE.
[0068] The UE can obtain the RAN Energy saving state configuration via three methods, local configuration (step 701) , from the RAN (step 702) , or from the NF (step 703, 704) .
[0069] In the first method at step 701, the UE is locally configured with the RAN Energy saving state configuration. In this second method at step 702, the RAN can send the RAN Energy saving state configuration to UE via RRC message. In a third method at step 703, the RAN can send the RAN Energy saving state configuration to NF (e.g., AMF) . At step 704, the NF (e.g., AMF) can send the RAN Energy saving state configuration to UE (e.g., via NAS message) . At step 705, the RAN broadcast the RAN Energy saving state index in the air interface (e.g., in the SIB (System information Block) . The UE get the current RAN / cell Energy saving state index. At step 706, according to RAN / cell energy saving state index and RAN Energy saving state configuration, the UE know the current RAN / cell Energy saving state information. The UE can perform the cell selection accordingly.
[0070] FIG. 8 illustrates a flowchart of a method 800 for CSI feedback for Energy state control. The method 800 may be executed by any one or more of the components and devices detailed herein in conjunction with FIGS. 1 to 7. In overview, the method 800 may be performed by a wireless communication node (e.g., a base station (BS) 102) , in some embodiments. Additional, fewer, or different operations may be performed in the method 800 depending on the embodiment. At least one aspect of the operations is directed to a system, method, apparatus, or a computer-readable medium.
[0071] At step 802, the wireless communication node can send, a wireless communication device or one or more core network entities, a message including Radio Access Network (RAN) energy saving state information. The RAN energy saving state information is related to a power state of the wireless communication node. The RAN energy saving state information includes at least one RAN energy saving state index and zero or more corresponding parameters. The parameters include at least one of: features of the wireless communication node to be turned off; features of the wireless communication node not preferred; a starting time at which the wireless communication node enters an energy saving state; a stopping time at which the wireless communication node leaves the energy saving state; an RAN area; or RAN parameters. The at least one RAN energy saving state index indicates a current RAN energy saving state.
[0072] The one or more core network entities can include an Access and Mobility Management Function (AMF) entity. The AMF entity can send the RAN energy saving state inform to a Network Function (NF) entity. The NF entity can send the RAN energy saving state information to the PCF entity, the PCF entity creates a PCC rule or UE policy according to the RAN energy saving state information. The one or more core network entities include a Network Repository Function (NRF) entity. In response to an NF entity discovering a status of the wireless communication node from the NRF entity, the NRF entity sends the RAN energy saving state information to the NF entity.
[0073] Prior to sending the RAN energy saving state information, an NF entity requests the RAN energy saving state information from the wireless communication node. At step 804, the wireless communication device or the one or more core network entities can receive the message including Radio Access Network (RAN) energy saving state information. The wireless communication device receives an RAN energy saving state configuration to define the RAN energy saving state information. The wireless communication node broadcasts the at least one RAN energy saving state index in an air interface. The wireless communication device receives the RAN energy saving state configuration through local configuration, an RRC message send from the wireless communication node, or a NAS message send from an AMF entity that receives the RAN energy saving state configuration from the wireless communication node.
[0074] While various embodiments of the present solution have been described above, it should be understood that they have been presented by way of example only, and not by way of limitation. Likewise, the various diagrams may depict an example architectural or configuration, which are provided to enable persons of ordinary skill in the art to understand example features and functions of the present solution. Such persons would understand, however, that the solution is not restricted to the illustrated example architectures or configurations but can be implemented using a variety of alternative architectures and configurations. Additionally, as would be understood by persons of ordinary skill in the art, one or more features of one embodiment can be combined with one or more features of another embodiment described herein. Thus, the breadth and scope of the present disclosure should not be limited by any of the above-described illustrative embodiments.
[0075] It is also understood that any reference to an element herein using a designation such as “first, ” “second, ” and so forth does not generally limit the quantity or order of those elements. Rather, these designations can be used herein as a convenient means of distinguishing between two or more elements or instances of an element. Thus, a reference to first and second elements does not mean that only two elements can be employed, or that the first element must precede the second element in some manner.
[0076] Additionally, a person having ordinary skill in the art would understand that information and signals can be represented using any of a variety of different technologies and techniques. For example, data, instructions, commands, information, signals, bits and symbols, for example, which may be referenced in the above description can be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
[0077] A person of ordinary skill in the art would further appreciate that any of the various illustrative logical blocks, modules, processors, means, circuits, methods and functions described in connection with the aspects disclosed herein can be implemented by electronic hardware (e.g., a digital implementation, an analog implementation, or a combination of the two) , firmware, various forms of program or design code incorporating instructions (which can be referred to herein, for convenience, as “software” or a “software module) , or any combination of these techniques. To clearly illustrate this interchangeability of hardware, firmware and software, various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware, firmware or software, or a combination of these techniques, depends upon the particular application and design constraints imposed on the overall system. Skilled artisans can implement the described functionality in various ways for each particular application, but such implementation decisions do not cause a departure from the scope of the present disclosure.
[0078] Furthermore, a person of ordinary skill in the art would understand that various illustrative logical blocks, modules, devices, components and circuits described herein can be implemented within or performed by an integrated circuit (IC) that can include a general-purpose processor, a digital signal processor (DSP) , an application specific integrated circuit (ASIC) , a field programmable gate array (FPGA) or other programmable logic device, or any combination thereof. The logical blocks, modules, and circuits can further include antennas and / or transceivers to communicate with various components within the network or within the device. A general-purpose processor can be a microprocessor, but in the alternative, the processor can be any conventional processor, controller, or state machine. A processor can also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other suitable configuration to perform the functions described herein.
[0079] If implemented in software, the functions can be stored as one or more instructions or code on a computer-readable medium. Thus, the steps of a method or algorithm disclosed herein can be implemented as software stored on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that can be enabled to transfer a computer program or code from one place to another. A storage media can be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can include RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to store desired program code in the form of instructions or data structures and that can be accessed by a computer.
[0080] In this document, the term “module” as used herein, refers to software, firmware, hardware, and any combination of these elements for performing the associated functions described herein. Additionally, for purpose of discussion, the various modules are described as discrete modules; however, as would be apparent to one of ordinary skill in the art, two or more modules may be combined to form a single module that performs the associated functions according to embodiments of the present solution.
[0081] Additionally, memory or other storage, as well as communication components, may be employed in embodiments of the present solution. It will be appreciated that, for clarity purposes, the above description has described embodiments of the present solution with reference to different functional units and processors. However, it will be apparent that any suitable distribution of functionality between different functional units, processing logic elements or domains may be used without detracting from the present solution. For example, functionality illustrated to be performed by separate processing logic elements, or controllers, may be performed by the same processing logic element, or controller. Hence, references to specific functional units are only references to a suitable means for providing the described functionality, rather than indicative of a strict logical or physical structure or organization.
[0082] Various modifications to the embodiments described in this disclosure will be readily apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the scope of this disclosure. Thus, the disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the novel features and principles disclosed herein, as recited in the claims below.
Claims
1.A wireless communication method, comprising:sending, by a wireless communication node to a wireless communication device or one or more core network entities, a message including Radio Access Network (RAN) energy saving state information, wherein the RAN energy saving state information is related to a power state of the wireless communication node.2.The wireless communication method of claim 1, wherein the RAN energy saving state information includes at least one RAN energy saving state index and zero or more corresponding parameters.3.The wireless communication method of claim 2, wherein the at least one RAN energy saving state index indicates a current RAN energy saving state.4.The wireless communication method of claim 2, wherein the parameters include at least one of:features of the wireless communication node to be turned off; features of the wireless communication node not preferred; a starting time at which the wireless communication node enters an energy saving state; a stopping time at which the wireless communication node leaves the energy saving state; an RAN area; or RAN parameters.5.The wireless communication method of claim 1, wherein the one or more core network entities include an Access and Mobility Management Function (AMF) entity .6.The wireless communication method of claim 5, wherein the AMF entity sends the RAN energy saving state inform to a Network Function (NF) entity.7.The wireless communication method of claim 5 or 6, wherein the NF entity sends the RAN energy saving state information to the PCF entity, the PCF entity creates a PCC rule or UE policy according to the RAN energy saving state information.8.The wireless communication method of claim 1, wherein the one or more core network entities include a Network Repository Function (NRF) entity.9.The wireless communication method of claim 8, wherein, in response to an NF entity discovering a status of the wireless communication node from the NRF entity, the NRF entity sends the RAN energy saving state information to the NF entity.10.The wireless communication method of claim 1, wherein, prior to sending the RAN energy saving state information, an NF entity requests the RAN energy saving state information from the wireless communication node.11.The wireless communication method of claim 1, wherein the wireless communication device receives an RAN energy saving state configuration used to define the RAN energy saving state information.12.The wireless communication method of claim 1, wherein the wireless communication node broadcasts the at least one RAN energy saving state index in an air interface.13.The wireless communication method of claim 11, wherein the wireless communication device receives the RAN energy saving state configuration through local configuration, an RRC message send from the wireless communication node, or a NAS message send from an AMF entity that receives the RAN energy saving state configuration from the wireless communication node.14.A wireless communication method, comprising:receiving, by a wireless communication device or one or more core network entities from a wireless communication node, a message including Radio Access Network (RAN) energy saving state information,wherein the RAN energy saving state information is related to a power state of the wireless communication node.15.The wireless communication method of claim 14, the wireless communication device selects the cell according to the energy saving state information.16.A wireless communications apparatus comprising a processor and a memory, wherein the processor is configured to read code from the memory and implement a method recited in any of claims 1 to 15.17.A computer program product comprising a computer-readable program medium code stored thereupon, the code, when executed by a processor, causing the processor to implement a method recited in any of claims 1 to 15.
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