WO2021247807A1 - Procédé et système d'attribution de tranches permettant un délestage de charge de façon à réduire à un minimum une consommation de puissance sur un site où un gnb est commandé en fonction d'attributions de tranches - Google Patents

Procédé et système d'attribution de tranches permettant un délestage de charge de façon à réduire à un minimum une consommation de puissance sur un site où un gnb est commandé en fonction d'attributions de tranches Download PDF

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Publication number
WO2021247807A1
WO2021247807A1 PCT/US2021/035616 US2021035616W WO2021247807A1 WO 2021247807 A1 WO2021247807 A1 WO 2021247807A1 US 2021035616 W US2021035616 W US 2021035616W WO 2021247807 A1 WO2021247807 A1 WO 2021247807A1
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WO
WIPO (PCT)
Prior art keywords
power
node
network
management unit
bwps
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PCT/US2021/035616
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English (en)
Inventor
Dhaval Mehta
Farhad Bassirat
Siddhartha Chenumolu
Amit Pathania
Original Assignee
Dish Wireless L.L.C.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US16/891,934 external-priority patent/US11202234B1/en
Priority claimed from US16/891,991 external-priority patent/US11265135B2/en
Application filed by Dish Wireless L.L.C. filed Critical Dish Wireless L.L.C.
Priority to EP21817300.3A priority Critical patent/EP4147114A4/fr
Priority to JP2022574760A priority patent/JP2023529165A/ja
Publication of WO2021247807A1 publication Critical patent/WO2021247807A1/fr

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Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/30—Means for acting in the event of power-supply failure or interruption, e.g. power-supply fluctuations
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/26—Power supply means, e.g. regulation thereof
    • G06F1/32—Means for saving power
    • G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
    • G06F1/3234—Power saving characterised by the action undertaken
    • G06F1/325—Power saving in peripheral device
    • G06F1/3278—Power saving in modem or I/O interface
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/02—Resource partitioning among network components, e.g. reuse partitioning
    • H04W16/06—Hybrid resource partitioning, e.g. channel borrowing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/20—Negotiating bandwidth
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0203—Power saving arrangements in the radio access network or backbone network of wireless communication networks
    • H04W52/0206—Power saving arrangements in the radio access network or backbone network of wireless communication networks in access points, e.g. base stations
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • the following discussion generally relates to power management in wireless communications systems. More particularly, the following discussion relates to systems, devices, and automated processes that reduce power drawn by radio frequency (RF) radios based on commercial power interrupts or failures in 5G data networks or the like by smart bandwidth adaptation and traffic loading increasing the operating time of the switched backup uninterruptible power supply (UPS).
  • RF radio frequency
  • the 5G data standard and telephone networks were developed to provide greatly improved bandwidth and quality of service to mobile telephones, computers, internet-of-things (IoT) devices, and the like.
  • the high-bandwidth 5G networks face additional challenges that are now being recognized.
  • the 5G base station is expected to consume roughly three times as much power as the legacy 4G base stations in use.
  • more 5G base stations are needed to cover the same area as the legacy 4G base stations.
  • each 5G base consumes three times the power of the 4G base station, for coverage of the same area more 5Gbase stations are in use, and as a result, significant increases in power consumption will result.
  • the 5G base stations are required to have a battery backup to ensure service offerings during AC power outages.
  • These battery backup units are expensive, and the cost for the battery backup is in part determined by the amount of the power needed and subsequently consumed by the RF radio transmitters and receivers at the 5G base station; which in this case exceeds the legacy 4G base stations by both number in use and the power need for each 5G base station.
  • BW operating bandwidth
  • FIG. 1 illustrates an exemplary diagram of components in a base station of the base station power management system in a wireless data networking environment in accordance with various embodiments
  • FIG. 2 illustrates an exemplary diagram of a feedback communication loop for power management of a base station responsive to a commercial power interrupt or failure of the base station power management system in a wireless data networking environment in accordance with various embodiments;
  • FIG. 3 illustrates an exemplary flowchart for power management of a base station responsive to a commercial power interrupt or failure of the base station power management system in accordance with various embodiments.
  • FIG. 4 illustrates a flowchart of an example automated selection process for reducing slice access failures in accordance with various embodiments
  • FIG. 5 illustrates a flow diagram of an exemplary slice arrangement before and after a AC power outage in accordance with various embodiments
  • FIG. 6 illustrates an exemplary flowchart of reassigning users into smaller BWPs responsive to AC power outages, power interrupts, or network loads in accordance with various embodiments
  • FIG. 7 illustrates an exemplary flowchart of network slicing responsive or tied to AC power outages, power interrupts, or light network load conditions in accordance with various embodiments.
  • FIG. 8 illustrates a diagram of an example user equipment (UE) and network architecture, for example, an automated process for reducing power consumption in accordance with various embodiments.
  • UE user equipment
  • Systems, devices, and automated processes are provided to provide adaptive bandwidth solutions to reduce the power draw of a backup power supply to a cell site (or node) in a network in response to a power loss or a light network load at the cell site.
  • a system for tying network slicing to adaptive bandwidth (BW) management includes an element management control unit including distribution and central units (DU/CU) to monitor power and traffic loads at a plurality of nodes in a network; a BW management unit communicating with the DU/CU to reassign a set of network slices with a set of smaller bandwidth parts (BWPs) at a node; the BW management unit configured to define a smaller BWP from the set of smaller BWPs from a slice mapping for slice reassignment during a AC power outage wherein slicing mapping includes a set of network slices tied to a set of smaller BWPs in the network; and the BW management unit configured to adapt BW for users at the node by reassigning of at least one network slice with a defined smaller BWP at the node in response to a condition determined by the BW management unit, the condition of at least one of a AC power outage, and
  • DU/CU distribution and central units
  • the system further includes in response to at least one of the determining conditions of a AC power outage, and reduced traffic loads, the DU/CU to send data about the determined condition to the BW management unit to close one or more network slice offering.
  • the system includes the BW management unit configured to automatically initialize a network slice reassignment process at the node in response to data received about a loss of power and the reduced traffic loads from the DU/CU monitoring nodes of the network wherein usage of the set of smaller BWPs does not require a change of a carrier at the node.
  • the system includes the BW management unit configured to shut off transmissions of related sub-carriers of the network at the node to reduce power consumption.
  • the BW management unit is configured to communicate with a radio receiver at a node to exchange messages about requirements of elements of the node based on operations using smaller BWPs at the node to reduce output power of the radio receiver at the node by taking into account data received by the DU/CU indicative of a merger of the network slice to the smaller BWPs at the node.
  • the system includes a gNB node controlled by a radio network with the DU/CU configured to monitor AC power outages and to activate a network slice reassignment process at the gNB node.
  • the DU/CU is configured to send data about the condition to the BW management unit to close one or more network slice offering while enabling network slice offerings of a higher priority.
  • the system further includes the radio controller at the node instructed by the BW management unit, monitoring the users at the designated lower BWPs by data received from the DU/CU of user traffic, to control routing of power from the backup battery and to reduce the power consumed by the node by via a battery controller to reduce power drawn by the backup battery.
  • a method for adaptive bandwidth (BW) management includes configuring an element management control unit including distribution and central units (DU/CU) to monitor power and traffic loads at a plurality of nodes in a network; communicating, by a BW management unit with the DU/CU, to reassign a set of network slices with a set of smaller bandwidth parts (BWPs) at a node; configuring the BW management unit for defining a smaller BWP from the set of smaller BWPs from a slice mapping for slice reassignment during a AC power outage wherein slicing mapping includes a set of network slices tied to a set of smaller BWPs in the network; and adapting BW, by the BW management unit, for users at the node by reassigning of at least one network slice with a defined smaller BWP at the node in response to a condition determined by the BW management unit, the condition of at least one of a AC power outage,
  • DU/CU distribution and central units
  • the method includes in response to at least one of the determining conditions of a AC power outage, and reduced traffic loads, sending data by the DU/CU about the condition to the BW management unit to close one or more network slice offering.
  • the method further includes automatically initializing, by the BW management unit, a network slice reassignment process at the node in response to data received about a loss of power and the reduced traffic loads from the DU/CU monitoring nodes of the network wherein usage of the set of smaller BWPs does not require a change of a carrier at the node.
  • the method includes shutting off, by the BW management unit, transmissions of related sub-carriers of the network at the node to reduce power consumption.
  • the further method includes communicating, by the BW management unit with a radio receiver at a node, for exchanging messages about operating elements at the node using smaller BWPs at the node for reducing output power of the radio receiver at the node by taking into account data received by the DU/CU indicative of network slice reassignments at the node.
  • the method further includes controlling access by users at a gNB node via the radio network by data from the DU/CU monitoring AC power outages and activating the network slice reassignment process at the gNB node.
  • the system further includes sending data from the DU/CU about the condition to the BW management unit to close one or more network slice offerings while enabling network slice offerings of a higher priority.
  • the method further includes instructing, by the radio controller at the node by the BW management unit that monitors the users reassigned by network slices offerings at the node, routing of power from a backup battery and to reduce, via a battery controller, the energy consumed by the node and to reduce power drawn by the backup battery.
  • a computer program product tangibly embodied in a computer-readable storage device that stores a set of instructions that, when executed by a processor, performs a method for an operational mode of a base station when a power loss or light network load is detected is provided.
  • the method includes configuring an element management control unit including distribution and central units (DU/CU) to monitor power and traffic loads at a plurality of nodes in a network; communicating, by a BW management unit with the DU/CU, to reassign a set of network slices with a set of smaller bandwidth parts (BWPs) at a node; configuring the BW management unit for defining a smaller BWP from the set of smaller BWPs from a slice mapping for slice reassignment during a AC power outage wherein slicing mapping includes a set of network slices tied to a set of smaller BWPs in the network; and adapting BW, by the BW management unit, for users at the node by reassigning of at least one network slice with a defined smaller BWP at the node in response to a condition determined by the BW management unit, the condition of at least one of a AC power outage, and reduced traffic load at the node.
  • DU/CU distribution and central units
  • the method includes automatically initializing, by the BW management unit, the slice reassignment process at the node in response to data received about a loss of power and the reduced traffic loads from the DU/CU monitoring nodes of the network wherein usage of the set of smaller BWPs does not require a change of a carrier at the node.
  • the method further includes communicating, by the BW management unit with a radio receiver at a node, for exchanging messages about operating elements at the node using smaller BWPs at the node for reducing the output power of the radio receiver at the node by taking into account data received by the DU/CU indicative of network slice reassignments at the node.
  • the method further includes sending data from the DU/CU about the condition to the BW management unit to close one or more network slice offerings while enabling network slice offerings of a higher priority.
  • the RF radio units are required to have a battery backup to ensure service offerings during a AC power outage.
  • the battery backup units are expensive, and the cost for each battery backup is calculated by the power consumed by the radio unit, the backup duration, and how many operating carriers are at a base station or network.
  • 5G small cells mean added power requirements. Increased data traffic requires more computational power. Although massive MIMO can help improve spectral efficiency, power efficiency is generally lower, and a typical three-sector small cell can require 200-1,000 watts of power.
  • the first step involves recognizing that the traditional model for powering macro cell sites does not apply to small cells.
  • the RF radios and antennas use a fixed input power that is based on full load RF conditions.
  • the RF radio is not able to receive notice to modulate its power consumption accordingly.
  • the RF is not informed, nor is the RF radio configured to be advised of a commercial power loss and can change or drop its preconfigured input power requirements.
  • the inability to change the input power requirements of the RF radio results in lower performance in its operation by causing a faster drain on its battery backup systems.
  • the 5G New Radio is the global standard for a unified, capable 5G wireless interface, can deliver a faster broadband experience, and is designed to have an initial bandwidth part (BWP) that is used by all the UE during initial access and dedicated BWP for a UE or group of UEs that will apply for data allocations.
  • BWP adaptation is controlled by a gNB node (radio access network (RAN) + distributed unit (DU)/ centralized unit (CU) for 5G).
  • RAN radio access network
  • DU distributed unit
  • CU centralized unit
  • another option is to use a gradual reduction in the operating BWP. For (e.g., to start with only a 25% percent reduction in BW and then gradually move to lower numbers if the power is not restored). With this process, the user experience can avoid degradation in the case of short AC power outages.
  • the network slicing can also be linked to the BWP, during a AC power outage or light network load operations, the minimization of the power consumption gNB can be done by control of the slice and BWP mutual association. For example, the operator can choose to merge all the available slices into the smaller BWP. The operator can choose to define the BWP and slice mapping during a AC power outage when there are multiple BWP defined that are made available during AC power outages
  • RAN radio access network
  • 5G next-generation
  • RAN slicing utilizes virtualization allows the operator to provide dedicated logical networks with customer-specific functionality without losing the economies of scale of a shared infrastructure
  • QoS quality of service
  • the 4G two-port transceivers have been replaced with four-port radios, enabling the use of multiple-in, multiple-out (MIMO) transmission to improve spectral efficiency.
  • MIMO multiple-in, multiple-out
  • Eight-port radios take beamforming a step further to provide additional efficiency gains.
  • the nascent 5G technology will take full advantage of beamforming by using 16 or 64 transmit/receive chains (16T/16R, 64T/64R) and radio-integrated antennas operating at 2.3 GHz and higher.
  • the Radio AC power outage detection by DU/CU, DU/CU, or NFMF can also detect AC power outage via FCAPs and activate the solution.
  • the RAN will notify to the control unit (DU: Distributed Unit or CU: Central Unit).
  • the DU/CU will initiate moving of all user traffic to the designated lower BWP(s) (e.g., initial BWP) while shutting down all the other BWP in the current operating carrier.
  • the DU/CU will move all the users and/or slices to the smaller BWP(s) during a AC power outage or during light network load to minimize power consumption gNB and will notify the users of the change in the assigned BWP.
  • the Users will stop monitoring the current BWP and will immediately start following only the lower BWP.
  • the DU/CU can also move all the traffic to a single carrier based on BWP or slice prioritization configurations.
  • gNB can re-activate all the dedicated BWP or slices and move the users seamlessly to their respective BWP or slice(s).
  • MU-MIMO Multi- User MIMO
  • DU/CU can turn off transmission on other sub-carriers thereby resulting in power saving.
  • the lower PRBs assignment for MU-MIMO can be prioritized based on BWP and/or Slicing predefined priorities.
  • the RF radio operating power setting is reduced based on the immediate operational requirements, including determinations of the available RF service on the antenna/radio to provide for a prolonged operating time of airtime of the antenna reception and RF radio transmitter.
  • Wireless mobile communication technology uses various standards and protocols to transmit data between a base transceiver station (BTS) and a wireless mobile device.
  • BTS base transceiver station
  • 5G fifth-generation
  • MIMO massive multiple-input multiple outputs
  • the BTS can be a combination of evolved Node Bs (also commonly denoted as enhanced Node Bs, eNodeBs, or eNBs) and Radio Network Controllers (RNCs) in a Universal Terrestrial Radio Access Network (UTRAN), which communicates with the wireless mobile device, known as user equipment (UE).
  • a downlink (DL) transmission can be a communication from the BTS (or eNodeB) to the wireless mobile device (or UE), and an uplink (UL) transmission can be a communication from the wireless mobile device to the BTS.
  • the power consumption of base stations is classified into three types, which are the transmission power, the computational power, and power for base station operation.
  • the transmission power is the power used by the power amplifiers (PAs) and RF chains, which perform the wireless signals change, i.e., signal transforming between the baseband signals and the wireless radio signals.
  • the computation power represents the energy consumed at baseband units (BBU’s), which includes digital single processing functions, management, and control functions for BSs and the communication functions among the core network and BSs. All these operations are executed by software and realized at semiconductor chips.
  • the additional power represents the power consumed for maintaining the operation of BSs. More specifically, the additional power includes the power lost at the exchange from the power grid to the main supply, at the exchange between different direct current to direct current (DC-DC) power supply, and the power consumed for active cooling at BSs.
  • DC-DC direct current to direct current
  • Base stations include backup power (e.g., batteries), these forms of backup power may not provide sufficient power during lengthy AC power outages, use of commercial wireless communications services may increase due to users’ needs and/or desires.
  • backup power e.g., batteries
  • Operating the BS in a sleeping mode can be a way to reduce energy consumption in cellular networks; however, this method focuses on the output power and does not consider a loss or interrupt of the commercial power on the input to the B.S. Hence, queueing decision techniques for BS sleeping techniques while can maximize energy-efficient utilization of the BSs in a green communication network is not applicable when commercial power is lost to the BS.
  • the physical or network node either represents an access node (e.g., Radio Distributed Units) or non-access node (e.g., servers and routers), while a physical link represents an optical fiber link between two physical nodes.
  • Every physical node is characterized by a set of available resources, namely computation (CPU), memory (RAM), and storage, which define the load characteristics of a cell.
  • Each physical link is characterized by a bandwidth capacity and a latency value, which is the time needed by a flow to traverse that link.
  • both physical nodes and links have associated utilization power requirements for each type of available resource.
  • the power delivery to a BS is rectified and regulated to a nominal measured DC voltage 48 (i.e., voltage direct current (VDC)), which is fed to a backup battery or a set of backup batteries for charging.
  • VDC voltage direct current
  • the rectifier unit includes circuitry to keep the batteries fully charged and ready in case of a commercial power interrupt or failure. At full charge, the backup battery is kept at a voltage in the vicinity of 50 volts. Also, the vendors/operators may opt for a DC voltage of -24V or other DC voltage setting and not the typical 48V setting.
  • the battery pack parameter in general per customer’s requirement is in the order of 2-hour work time or other operator backup time settings (e.g., the operators may choose a 2-hour battery backup, 4-hour or 8-hour...as desired or required for operations) under 100W (in this case, the power is calculated per RU power consumption and is a variable quantity)
  • Base stations typically use a 48V input supply that is stepped down by DC/DC converters to 24V or 12V, that can be reduced to meet the DC voltage level of each module.
  • the receive and transmit bandwidth of a UE can be adjusted to a subset of total cell bandwidth referred to as BWP.
  • the bandwidth can be configured to shrink during a period of low activity for power reduction, and also the bandwidth location can be changed to allow different services.
  • the bandwidth adaption can be achieved by configuring the UE with BWP(s) informed to the UE of which of the configured BWPs is currently active one.
  • FIG. 1 shows a graphical representation of a 5G or other data network 100 that includes multiple cells 121, 122, 123 that provide access to a network 105 for any number of UE devices 110.
  • FIG. 1 shows only one user equipment (UE) device 110 for simplicity, in practice the concepts described herein may be scaled to support environments 100 that include any number of devices 110 and/or cells 121-123, as well as any sort of network architecture for assigning bandwidth to different slices and performing other tasks, as desired.
  • a mobile telephone or other user equipment (UE) device 110 suitably attempts to connect to network 105 via an appropriate access cell 121, 122, 123.
  • each cell 121 includes the components for transmission of a base station controller 131, a base station transceiver 138, a node 140, an RF Radio 135, a Radio Network controller 142; the linking components of the antenna interface 132 and the antenna 133; and the power components of the commercial power interface 150, the backup power supply 152 of a battery circuitry 154 and UPS or batteries 156.
  • the commercial power interface 150 may receive power AC power from a public utility or other sources.
  • the antenna 133 and antenna interface 132 control the signal to the UEs 110.
  • the radio network controller 142 can control the RF transmit output via the RF radio 135 to conserve power usage to reduce the power draw on the USP 156. By reducing the communication bit rate, the RF power can be reduced in decibels (“dB”). Additionally, step reductions can be implemented.
  • the battery circuit 154 can be configured as a rectifier type switch that can switch the output power from the UPS 156 at multiple levels.
  • the Base Station controller 138 can include power control features to control the power drawn by the base station 138.
  • the base station controller 138 can communicate wirelessly with a power management system 170 that can confirm the AC power outage or interrupt on the front end to change the power input power levels of multiple small cells 121, 122, and 123, and a number of UEs 110 connected to the Node 140 and resources in a slice of a node (gNB).
  • a power management system 170 can confirm the AC power outage or interrupt on the front end to change the power input power levels of multiple small cells 121, 122, and 123, and a number of UEs 110 connected to the Node 140 and resources in a slice of a node (gNB).
  • UEs 110 can be configured with a maximum of 4 BWP for Downlink and Uplink, but at a given point of time, only one BWP is active for downlink and one for uplink.
  • the BWPs can be configured to enable each of the UEs 110 to operate in a narrow bandwidth, and when the user demands more data (bursty traffic), it can inform gNB to enable full bandwidth.
  • gNB configures a BWP, it includes parameters: BWP Numerology (u) BWP bandwidth size Frequency location (NR-ARFCN), CORESET (Control Resource Set).
  • BWP Numerology u
  • BWP bandwidth size Frequency location (NR-ARFCN), CORESET (Control Resource Set).
  • UE is not expected to receive PDSCH, PDCCH, CSI-RS, or TRS outside an active bandwidth part.
  • Each DL BWP includes at least one CORESET with UE Specific Search Space (USS) while Primary carrier at least one of the configured DL BWPs includes one CORESET with common search space (CSS).
  • UE 110 shall not transmit PUSCH or PUCCH outside an active bandwidth part.
  • UEs 110 are expected to receive and transmit only within the frequency range configured for the active BWPs with the associated numerologies. However, there are exceptions; a UE may perform Radio Resource Management (RRM) measurement or transmit sounding reference signal (SRS) outside of its active BWP via measurement gap
  • RRM Radio Resource Management
  • SRS sounding reference signal
  • the radio network controller 131 can implement logic is implemented with computer-executable instructions stored in a memory, hard drive, or other non- transitory storage of device for execution by a processor contained within. Also, the radio network controller 131 can be configured with a remote radio unit (RRU) 160 for downlink and uplink channel processing.
  • the RRU 160 can be configured to communicate with a baseband unit (BBU) 139 of a base station controller 131 via a physical communication link and communicate with a wireless mobile device via an air interface.
  • BBU baseband unit
  • the base station 138 can be separated into two parts, the Baseband Unit (BBU) 139 and the Remote Radio Head (RRH) 141, that provides network operators to maintain or increase the number of network access points (RRHs) for the node (gNB), while centralizing the baseband processing functions at a master base station 175.
  • BBU Baseband Unit
  • RRH Remote Radio Head
  • the power management system, 170 can be instructed to coordinate operations in the tangent of power levels of multiple cells (121, 122, and 123).
  • FIG. 2 is an exemplary flow diagram of a smart bandwidth adaptation call flow of the smart bandwidth (BW) adapter controller in accordance with various embodiments.
  • the smart BW control is enabled or always configured in on-state monitoring for a AC power outage or light network load.
  • detection by the BW adapter controller is made as to whether a change in state is occurring of a AC power outage or light network load. For example, a feedback communication loop for power management of a base station responsive to a commercial power interrupt or failure of the base station power management system in a wireless data networking environment. Radio AC power outage detection by distribution unit (DU) or central unit (CU) connected to the 5G network.
  • DU distribution unit
  • CU central unit
  • the Distributed Unit (DU) or Central Unit (CU) or management function (NFMF) can also detect AC power outage by using the network model of Fault, Configuration, Accounting, Performance, Security (FCAPS) and activate the appropriate solution. For example, during a AC power outage, the RF radio will notify to the control unit DU/CU and the DU/CU units will initiate moving of all or nearly all of the user traffic to the designated lower BWP(s) (e.g., initial BWP) while shutting down all or almost all of the other BWP in the current operating carrier.
  • FCAPS Fault, Configuration, Accounting, Performance, Security
  • the small BWP(s) will be initialized.
  • the initial active small BWP(s) are for a UE during the initial access until the UE is explicitly configured with BWPs during or after the establishment of the RRC connection.
  • the initial active BWP is the default BWP unless configured otherwise.
  • step 20 move or assigns users to small BWP(s). For example, based on the network configuration, the DU/CU may move all or nearly all the users and/or slices to the smaller BWP(s) during the AC power outage or during the light network load to minimize power consumption.
  • the gNB will notify the UEs of the change in the assigned BWP.
  • the UEs will cease to monitor the current BWP and will switch to immediately monitoring only the lower BWP.
  • the DU/CU can also move all the traffic to a single carrier based on BWP and/or slice prioritization configurations.
  • the adaptive bandwidth module continues to monitor for a AC power outage or light network load if the commercial power is resumed then at step 35, the BWP is restoring for the entire channel. After full power restores or loading on the RAN has increased, gNB can re-activate all the dedicated BWP and/or slices and move the users seamlessly to their respective BWP and/or slice(s).
  • step 40 the normal operation is resumed again, and the power consumption levels are raised.
  • step 25 if there is still determined to be a AC power outage or light network load, then at step 30, the feedback operation occurs to delay restoring the normal operation with all the BWPs for the entire channel BW
  • the node is still placed in a limited operational state configured with the small BWP(s), and the BW adaptive unit continues to wait for the resumption of the commercial power or increased loads.
  • the reduced bandwidth operations and the corresponding assignments to the UEs can also occur in a Multi-User MIMO (MU-MIMO) operation if a RAN Scheduler is operating in MU- MIMO operation and decides that all or nearly all of the current serving users can be assigned to the same lower physical resource blocks (PRBs).
  • the DU/CU units can shut off the current transmission that is occurring on other sub-carriers (i.e., each PRB can consist of up to 12 subcarriers) which will also result in power savings of the BS
  • the lower PRBs assignments for MU-MIMO can also be prioritized based on the BWPs active and/or the slicing priorities that have been predefined.
  • FIG. 3 is an exemplary flow diagram of a smart bandwidth adaptation call flow of the smart bandwidth (BW) adapter controller in accordance with various embodiments.
  • the BW adapter controller is initiated, and at step 310 determines whether a change in state is occurring of a AC power outage or light network load is being operated at the node. If the determination is in the affirmative, then at step 315, the initialize slice reassignment process takes place.
  • various slices are reassigned to small BWPs from their current slice assignments.
  • each active slice is tied to respective BWPs which enable during the AC power outage or light network load the systematic automated transfer of each active slice to a BWP in a scheduled order to reduce the power consumption by the UEs accessing the gNB by preconfigured slice control and BWP association
  • an operator can choose to merge all the active slices in the network or at a node into smaller BWPs.
  • the operator may choose to define profiles, settings, etc. of each BWP that make up the BW and also alternative slice mappings for assignment during the power interrupt, AC power outage, light network load, etc. and this can be beneficial when there are multiple BWP that can be defined for usage in such conditions when the full BW is not needed or when power savings are desired.
  • the offering or selections can be assigned all at once, incrementally, and also can be reassigned to normal operation in a likewise manner.
  • the operator also can simply choose to close some slice offerings when desired and continue to enable only certain higher priority slice(s) for access by premium, or both premium and non-premium used.
  • usage can be selected for an entire preset period or configured for a given duration to select user sets.
  • the BW controller adaptor like in FIG. 2 continues to check whether the commercial power has not been restored and, if not, then continues via step 330 with the configured mapped slices selected for reduced power or load operations.
  • step 335 once the commercial power is resumed or the load is increased beyond a certain threshold, all the slices that have been prior or can be enabled without the prior restrictions will be restored, and normal operations will be restored to all the UE’s given access.
  • FIG. 4 illustrates a functional diagram of BWP parts before and after a AC power outage of an exemplary smart BW adaptation call-flow in accordance with various exemplary embodiments.
  • an operating carrier e.g., 20 MHz
  • a BWP arrangement 410 before the AC power outage that includes an arrangement of four parts of a set that include (a) an initial BWP, (b) a BWP assigned a number 1, (c) a BWP assigned a number 2, and (d) a BWP assigned a number 3 that make up the entire BWP used by all the UE during the initial access and the dedicated BWP for a UE or group of UEs that is used for the data allocation by gNB (i.e., RAN+DU/CU).
  • gNB i.e., RAN+DU/CU
  • each BWP 1-3 as well as the initial BWP can contain multiple smaller BWP(s) (not shown).
  • the multiple smaller BWP(s) can be predefined by the operator for use in the arrangement during the AC power outage (420).
  • the BWP(s) 1-3 can be gradually reduced in the operating BWP.
  • a step approach in reduction can be used, with 25% step increments in a reduction in the BW (i.e., converting particular BWP(s) to an inactive state) corresponding to a gradual lower number of BWP(s) used.
  • the BW adaptor attempts to maintain a certain threshold of the quality of service (QoS) of the cell site when short AC power outages take place.
  • QoS quality of service
  • FIG. 5 illustrates a flow diagram of an exemplary slice arrangement before and after a AC power outage in accordance with various embodiments.
  • a slice arrangement 510 with the operating carrier e.g., 20 MHz
  • the slice arrangement is made up of a set of 4 slices of (a) slice assigned a number zero, (b) a slice assigned a number 1, (c) a slice assigned a number 2, and (d) a slice assigned a number 3.
  • slice arrangement 530 is reconfigured into two slices of (a) a slice assigned a number zero and (b) the slice assigned a number 1.
  • the network slicing of an exemplary embodiment of slice #0 and slice #1 can be tied to the initial BWP. This will enable keeping enabled slice #0 and slice #1 in the initial BWP.
  • select slices i.e., slice #0 and slice #1
  • an exemplary deployment may be where i) certain cells support slices assigned numbers (0& 1) for premium users with higher power usage and higher transmission rates which are assigned to different frequencies than slices 2&3 of macro/public cells of lower transmission rates and subsequently lower power usage, and ii) certain cells will continue ordinarily when there is no AC power outage be supporting both sets of slices (0&1) and (2&3).
  • some cells that would ordinarily be fully active for premium and non-premium slice access of slices (0&1) and (2&3), respectively, are not enabled.
  • a premium user is camped on a cell that is not a macro cell but does not offer slices 2&3 because of a reduced number of slices enabled (ordinarily slices 2&3 would be accessible) due to the AC power outages.
  • the user’s UE will frequently not attempt to access slice 0&1
  • the slices 2&3 are not available on another cell because of the AC power outage, the UE ability to reselect to another cell will be modified, and the UE will initiate an attempt to access the available slices 0&1 at the current cell which the UE is camped.
  • FIG. 6 illustrates an exemplary flowchart of reassigning users into smaller BWPs responsive to AC power outages, power interrupts, or light network loads in accordance with various embodiments.
  • a AC power outage is detected or it is determined in response in a variety of ways, for example via feedback (i.e., messages) communicated and received by the Base Station controller of an impending AC power interrupt or AC power outage detected in another part of the network or from the monitoring of the input current to the current Base Station.
  • the adaptive Bandwidth solution is executed for changing the current BWP configuration to a new smaller BWP configuration.
  • the Base Station may be currently operating via a carrier of a select frequency (e.g., 20 MHz) with a complementary BWP arrangement of four BWP parts of an initial BWP and other BWPs (1 to 3) that currently make up the entire BWP in use for the UE (i.e., essentially all of the UEs in use) connected with the initial access, or the dedicated BWP for a UE or group of UEs that is currently in use for data allocation by the gNB (i.e., RAN+DU/CU).
  • 1-3 can contain multiple smaller BWP(s).
  • a multiple set of smaller BWP(s) can be preconfigured for use during the AC power outage, light network load, or power interrupt type conditions that are occurring.
  • the number of BWP(s) 1-3 is used can also be incrementally decreased.
  • the input power, loading, and communications of network power interrupt can also be monitor by the BW adaptor to modulate the number of BWPs in use (i.e., continue to decrease or increase the number of active BWPs) and to keep a certain threshold of the QoS of the cell site during the changed power or load conditions.
  • FIG. 7 illustrates an exemplary flowchart of network slicing responsive or tied to AC power outages, power interrupts, or light network load conditions in accordance with various embodiments.
  • a AC power outage is detected.
  • a lower input power or load consumption i.e. light network load
  • a network slice management algorithm is executed by the BW adaptor to lower slice assignments at the gNB node connected to the Base Station.
  • the slice assignments may be assigned to a default setting for essential services or subsequent assignments for reducing non-essential services.
  • the access to the reduced number of slices that are in use and assigned at the gNB can be balanced for access between premium and non-premium enterprise users, with the premium enterprise users given preferential non-essential services so long as QoS can be met.
  • each set may be of slices can have an initial configuration of essential services (and only one set having access to non-essential services) in which premium enterprise users may be assigned access to both sets of slices.
  • the available set of slices with both essential and non-essential services are then shed in a priority scheme of assigning access to premium users.
  • the non-premium users are only given less prioritized access and therefore, can only access essential services that can be shed on a different priority scheme while maintaining an appropriate level of QoS.
  • the access and power use of the premium and the non-premium user can be reconfigured to minimize power consumption gNB from the control of the slice and BWP association.
  • the operator may select to merge all the available slices at the gNB node into smaller BWPs.
  • the operator may choose to define the BWP and slicing mapping during a AC power outage when there are multiple BWP defined to be used during AC power outages.
  • the operator can choose to close some slice offerings and continue only higher priority slice(s)
  • gNB can re activate all the dedicated BWP and/or slices and reassign the users seamlessly to their respective BWP and/or slice(s).
  • the reduced bandwidth assignment at the UE can be done in a Multi-User MIMO (MU-MIMO) operation. That is, if the RAN Scheduler is operating in MU-MIMO operation and decides that all serving users can be assigned to the same lower PRBs, DU/CU can turn off transmission on other sub-carriers thereby resulting in power saving.
  • the lower PRBs assignment for MU-MIMO can be prioritized based on BWP and/or slicing predefined priorities.
  • FIG. 8 is an exemplary illustration of a UE and network configuration in accordance with an embodiment.
  • the UE 810 includes a processor 815 for performing various logic solution functions for registering and receiving broadcast system information, initiating PDU sessions performing cell selections and reselections, ranking neighboring cells, configuring different modes of operation of the UE, etc...
  • the UE 810 may include cell reselection module 825, input/output interfaces 805, memory 830 for storing measurement reports, rankings data of neighboring cells, and a measurement module 835 for calculating by various solutions distances and other criteria for neighboring cells, etc. and for accessing cells within the vicinity for the premium and non- premium users.
  • the network 840 may include a base station 875, processor 845 for registering UE for slice access, cell ID modules 855, broadcast module 848 for broadcasting slice ID, slice offset values for neighboring cells and other system information, authentication module 850 for authenticating a UE, network slices 870, etc. and a BW adaptation module 860.
  • the UE 810 communicates with the network and reads broadcasted system information at a cell 910 in which the UE 810 is camped in an idle mode.
  • the UE 810 would receive slice IDs and slice offset values for neighboring cells of cell A via the transceiver 820 and process the information via the processor 815 to perform measurements and calculate using cell reselection equations of the cell reselection module 825 (e.g., using a cell reselection logic or process) to select a next cell where the cell reselection process is based on a ranking of the neighboring cells.
  • cell reselection equations of the cell reselection module 825 e.g., using a cell reselection logic or process
  • the BW adaptation module 860 can communicate via element management systems (EMS) 890 (i.e. control unit) to direct various logic components by an automated workflow of the cell 910 of the parts (shown in FIG. 1) of the radio receiver, the UPS, battery circuit (i.e., DC power supply), the cell site(i.e., node) calls/dropped calls/throughput in operation, the server.
  • EMS element management systems
  • the EMS 890 monitors via the distribution units (DUs) 930 and the central units (CUs) 940 the various nodes and cells in the network and controls or send instructions to the various components of the cell 910 to maintain the quality of service (QoS) of the cell site.
  • DUs distribution units
  • CUs central units
  • the automated workflow maintains the network availability and monitors the status of network devices, including the commercial power supplied to the network.
  • the EMS 890 can also be connected to multiple eNodeB for power management.
  • the automated workflow which is monitoring the network instructs the EMS 890 via various logic components to reduce the output power of the radio receiver and also takes into account other factors by communicating with the radio receiver, cell site via a router (or another communication link) connected to the server 920 in reducing the output power for transmission. This, in turn, reduces the DC power and the draw on the UPS.
  • the server 920 can be configured as NB-IoT Server is a software for data collection and monitoring and communicating via the router for activating the automated workflow via the EMS 890 and can display the log messages of each base station and the survival status of all sessions (including information such as signal, power, etc.).
  • the automated workflow After the detection of an interrupt of the commercial power, power failure, power loss, and/or AC power outage of the network, the automated workflow, which is monitoring the components and the network, detects the change and the power loss. The automated workflow in response to the detected power loss implements the configuration management functions via the BW adaptation module 860 of slice assignments, and available BWPs at the cell 910.
  • the EMS 890 communicates with the radio receiver, the server 920, and other components associated with the cell site, to send messages via the cell site router to receiver collect cell statistics, and to execute appropriate plug and play functionality of the base station radio receiver.
  • the automated workflow executes various functions to the element management system based on decisions from the BW adaptation module 860 and data from the cell site and base station.
  • a power management system includes several data processing components, each of which is patentable, and/or have patentable aspects, or having processing hardware capable of performing automated processes that are patentable. This document is not intended to limit the scope of any claims or inventions in any way, and the various components and aspects of the system described herein may be separately implemented apart from the other aspects.

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Abstract

L'invention concerne des systèmes et des procédés de gestion adaptative de bande passante (BW). Les systèmes comprennent : une unité de commande d'unités centrales et de distribution chargée de surveiller des charges de puissance et de trafic au niveau d'une pluralité de nœuds dans un réseau ; et une unité de gestion de BW communiquant avec l'unité de commande de façon à réattribuer un ensemble de petites parties de bande passante (BWP) à un ensemble de tranches de réseau. L'unité de gestion de BW est configurée de façon à définir une petite BWP à partir d'un mappage de tranches en vue de la réattribution de tranches pendant une coupure de courant alternatif. Le mappage de découpage en tranches contient des tranches de réseau associées à de petites BWP dans le réseau. L'unité de gestion de BW est en outre configurée de façon à adapter une BW destinée à des utilisateurs au niveau du nœud en réattribuant une petite BWP définie à au moins une tranche de réseau au niveau du nœud en réponse à une condition déterminée par l'unité de gestion de BW. La condition est une coupure de courant alternatif et/ou une charge de trafic réduite au niveau du nœud.
PCT/US2021/035616 2020-06-03 2021-06-03 Procédé et système d'attribution de tranches permettant un délestage de charge de façon à réduire à un minimum une consommation de puissance sur un site où un gnb est commandé en fonction d'attributions de tranches WO2021247807A1 (fr)

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EP21817300.3A EP4147114A4 (fr) 2020-06-03 2021-06-03 Procédé et système d'attribution de tranches permettant un délestage de charge de façon à réduire à un minimum une consommation de puissance sur un site où un gnb est commandé en fonction d'attributions de tranches
JP2022574760A JP2023529165A (ja) 2020-06-03 2021-06-03 ｇＮＢがスライス割り当てのために制御される場合に電力消費を最小限にするための負荷制限のためのスライス割り当てのための方法及びシステム

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US16/891,991 US11265135B2 (en) 2020-06-03 2020-06-03 Method and system for slicing assigning for load shedding to minimize power consumption where gNB is controlled for slice assignments for enterprise users

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