WO2022066068A1 - Planification sensible au matériel radio - Google Patents

Planification sensible au matériel radio Download PDF

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Publication number
WO2022066068A1
WO2022066068A1 PCT/SE2020/050884 SE2020050884W WO2022066068A1 WO 2022066068 A1 WO2022066068 A1 WO 2022066068A1 SE 2020050884 W SE2020050884 W SE 2020050884W WO 2022066068 A1 WO2022066068 A1 WO 2022066068A1
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WO
WIPO (PCT)
Prior art keywords
base station
radio base
data
scheduled
transmission
Prior art date
Application number
PCT/SE2020/050884
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English (en)
Inventor
Pål FRENGER
Anders Aronsson
Bo Göransson
Jonas Bengtsson
Original Assignee
Telefonaktiebolaget Lm Ericsson (Publ)
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.)
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Publication date
Application filed by Telefonaktiebolaget Lm Ericsson (Publ) filed Critical Telefonaktiebolaget Lm Ericsson (Publ)
Priority to PCT/SE2020/050884 priority Critical patent/WO2022066068A1/fr
Publication of WO2022066068A1 publication Critical patent/WO2022066068A1/fr

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Classifications

    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • 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 present disclosure relates to a method of a radio base station of scheduling data for downlink transmission and a radio base station performing the method.
  • One objective is to solve, or at least mitigate, this problem and thus to provide an improved method of a radio base station of scheduling data for downlink transmission.
  • a method of a radio base station of scheduling data for transmission comprises acquiring the data to be scheduled for transmission, wherein a plurality of radio base station configurations can be used for processing the data to be scheduled, determining, from the plurality of radio base station configurations, at least two radio base station configurations having capacity to process the data to be scheduled for transmission, selecting, from the at least two radio base station configurations determined to have capacity to process the data to be scheduled for transmission, a radio base station configuration resulting in a lower radio base station energy consumption, and scheduling the data for transmission with the radio base station being set in accordance with the selected radio base station configuration.
  • a radio base station configured to schedule data for transmission.
  • the radio base station comprises a processing unit and a memory, said memory containing instructions executable by said processing unit, whereby the radio base station is operative to acquire the data to be scheduled for transmission, wherein a plurality of radio base station configurations can be used for processing the data to be scheduled, determine, from the plurality of radio base station configurations, at least two radio base station configurations having capacity to process the data to be scheduled for transmission, select, from the at least two radio base station configurations determined to have capacity to process the data to be scheduled for transmission, a radio base station configuration resulting in a lower radio base station energy consumption, and to schedule the data for transmission with the radio base station being set in accordance with the selected radio base station configuration.
  • the radio base station acquire an energy consumption model indicating the radio base station energy consumption associated with each determined radio base station configuration.
  • the radio base station is thus able to carefully consider how each possible configuration affects the energy consumption.
  • the radio base station determines a first of the at least two radio base station configurations comprising scheduling different subsets of data to be routed for processing by different ones of a plurality of processing devices before being transmitted, and further determines at least a second of the at least two radio base station configurations comprising deactivating at least one of the processing devices and scheduling the data to alternatively be routed over at least one remaining one of the processing devices, which results in the lower radio base station energy consumption and deactivates said at least one processing device of the plurality of processing device.
  • determining an alternative route for scheduled data through the radio base station it is possible to deactivate processing device along the other route, which reduces energy consumption.
  • the radio base station acquires an energy consumption model indicating the energy consumption for each of the plurality of processing devices, which enables the radio base station to carefully consider which device(s) to deactivate for a greatest decrease in energy consumption.
  • the radio base station schedules data of at least one first transmission frequency in one transmission time slot to a second transmission frequency in a subsequent transmission time slot.
  • the first device maybe deactivated for reducing energy consumption.
  • the radio base station schedules data designated for transmission via one antenna element of a radio base station antenna to be transmitted over at least one other antenna element of the radio base station antenna, wherein said one antenna element is deactivated for reducing energy consumption.
  • the radio base station selects, in case at least three radio base station configurations having capacity to process the data to be scheduled for transmission are determined from the plurality of radio base station configurations, the radio base station configuration out of said at least three radio base station configurations which results in the lowest radio base station energy consumption.
  • the radio base station determines a first bias voltage of a power amplifier via which the scheduled data is transmitted, and a second lower bias voltage of the power amplifier, the second lower bias voltage being sufficiently high for the power amplifier to be capable of accommodating the data to be scheduled.
  • the energy consumption is reduced.
  • Figure 1 illustrates a radio base station configured to schedule data for downlink transmission according to an embodiment
  • Figure 2 illustrates a flowchart of a method of a radio base station of scheduling data for downlink transmission according to an embodiment
  • Figure 3 shows a schematic illustration of a prior art radio base station scheduling data according to LESS for performing MSTx
  • Figure 4 shows a schematic illustration of a radio base station performing scheduling of data according to an embodiment
  • Figure 5 illustrates a flowchart of a method of a radio base station of scheduling data for downlink transmission according to an embodiment
  • Figure 6 illustrates a flowchart of a method of a radio base station of scheduling data for downlink transmission according to another embodiment
  • Figure 7 illustrates energy consumption of a radio base station according to an embodiment
  • Figure 8 illustrates deactivation of antenna elements of a radio base station according to an embodiment
  • Figure 9 illustrates a radio base station according to an embodiment. DETAILED DESCRIPTION
  • a power amplifier (PA) 24 of an RBS 20 is biased with a voltage VB which is higher than what is required by the data being transferred by the RBS 20 for transmission via the PA 24 and antenna.
  • PA power amplifier
  • the required bias typically does not only depend on the peak power of the scheduled transmission but also on the modulation order, the number of scheduled data streams, the number of co-scheduled users, the channel code rate, the packet latency requirements, the allocated bandwidth, channel state information including interference and channel quality information, etc.
  • the required bias VD also depends on the hardware characteristics of the components in the transmitter such as the linearity, the error-vector-magnitude (EVM) performance, the out-of-band emissions, spurious emissions, I/Q-imbalance, interference between co-transmitted MIMO streams and user signals, harmonic, intermodulation, phase-noise, relative constellation error (RQE), adjacent channel interference power, etc.
  • EVM error-vector-magnitude
  • RQE relative constellation error
  • the required bias VD is typically only one out of a number of parameters in a radio unit that can be adjusted that has an impact on the above listed performance measurements as well as on the power consumption (further examples are given throughout the description below), which can be balanced against the requirements of the currently scheduled data transmission.
  • a scheduler 24 of the RBS 20 acquires the data to be scheduled for transmission
  • each RBS configuration is associated with a metric indicating the RBS energy consumption for that particular RBS configuration.
  • Radio A data include explicit information of peak voltage or power for each data packet, which information can be used by the scheduler 24 of this embodiment according to the above.
  • the scheduler 24 may signal, using e.g. CPRI, an indication of a magnitude of the bias voltage being sufficiently high for the PA 23 to be capable of accommodating the data to be scheduled.
  • MSTx Micro Sleep Transmission
  • LESS Low Energy Scheduling Solution
  • MSTx automatically switches off radio power amplifier(s) 13 of an RBS 10 on a symbol-time basis, when no signalling or user data needs to be transmitted on downlink. MSTx enables discontinuous transmission on downlink to save energy during low traffic.
  • LESS reschedules downlink transmissions for non-critical data. Timesensitive transfers are sometimes excluded, making sure the quality of service is never compromised. The LESS further Improves MSTx efficiency as even more timeslots are emptied and can trigger micro sleep.
  • the LESS is implemented in a radio base-band unit 11 (or central unit, RAN compute unit, etc.) of the RBS 10 while the MSTx operates in a radio unit 12 (or distributed unit, etc) of the RBS 10.
  • a scheduler 14 in the radio base-band unit 11 performs the LESS by rescheduling data originally intended to be transmitted at a first frequency in a first time slot such that the data instead is transmitted at a second frequency in a third time slot, which third time slot already is scheduled to transmit further data at the first frequency.
  • the scheduler 14 of the radio base-band unit 11 reschedules data originally intended to be transmitted at the first frequency in a sixth time slot such that the data instead is transmitted at a third frequency in an eighth time slot, which sixth time slot already is scheduled to transmit further data at the first frequency as well as at the second frequency.
  • the scheduler 14 has - by applying LESS - attained six empty time slots as illustrated in the top-right scheduling diagram.
  • a bias controller 15 of the radio unit 12 will thus apply MSTx by turning of the power amplifier 13 during time slots where no data is scheduled to be transmitted in the downlink over an RBS antenna. As a result, less energy is consumed by the power amplifier 13
  • FIG 4 illustrates an RBS 20 according to an embodiment.
  • the RBS 20 comprises a radio base-band unit 21 comprising a scheduler 24 and a radio unit 22 comprising a power amplifier 23 and optionally a bias controller 25 in case MSTx is to be performed.
  • the RBS 20 of this embodiment further comprises a path selector 26 controlling to which one (or both) of a first and second processing device 27, 28 scheduled data is to be routed for processing before being routed to the power amplifier 23 for downlink transmission via an RBS antenna.
  • the processing devices 27, 28 may be used for any kind of data processing, for instance for modulation, power control, filtering, speech processing, etc., of the routed data.
  • the first and second processing device 27, 28 are illustrated as separate integrated circuits (ICs). As is understood, the first and second processing device 27, 28 may e.g. be implemented as separate cores in a multi-core digital signal processor (DSP) IC where the data would be routed to the DSP IC and then routed separately to the respective core. It may be envisaged that the various functional entities of Figure 4 are implemented in a single IC or distributed over a circuit board.
  • DSP digital signal processor
  • the base-band unit 21 does not necessarily need to know which one of the two cores that are active. Hence, the base-band unit 21 does not need to know how the data is routed for processing in the radio unit 22. It only needs to know how much data it can provide to the radio unit for processing given the current configuration, while the path selector 26 (possibly integrated with the DSP) determines which route to select.
  • the radio unit 22 alternates which of the cores (or processing devices 27, 28) are active, e.g. in order to distribute the generated heat more evenly, which not necessarily have any impact on the scheduling decision in the base-band unit 22.
  • the fourth time slot of the top-left diagram illustrates a full-bandwidth scenario where all available frequencies are utilized during the scheduling.
  • the scheduled data is transported from the scheduler 24 to the path selector 26 via a data path while a control signal instructing the path selector 26 to which processing device a particular piece of data is to be routed is transported via a control path.
  • the path selector 26 is shown as a separate function for illustrational purposes, but may alternatively be implemented within the scheduler 24.
  • the scheduler 24 acquires in step S101 the data to be scheduled for downlink transmission by the RBS 20.
  • the first data subset would be routed via the first processing device 27 while the second data subset would be routed via the second processing device 27 according to the top-left scheduling diagram.
  • step S102 a first and a second RBS configuration are determined having capacity to process to data to be scheduled for transmission.
  • the first RBS configuration complies with the scenario illustrated in the top-left scheduling diagram where a first subset of the scheduled data is routed via the first processing device 27 while a second smaller subset of data is routed via the second processing device 28. This would result in a first amount of energy being consumed by the RBS 20.
  • the second RBS configuration complies with the scenario illustrated in the top-right scheduling diagram.
  • the scheduler 24 may schedule that data such that the data at the third frequency of the of the fourth time slot instead is scheduled to be transferred at the second frequency on the fifth time slot, while the data at the fourth frequency of the fourth time slot is scheduled to be transferred at the second frequency on the sixth time slot.
  • the second processing device 28 may (at least temporarily) be deactivated, which would reduce energy consumption of the RBS 20.
  • scheduling will only be performed by the scheduler 24 if the first processing device is determined in step S102 to have capacity to process the second data subset.
  • the scheduler 24 will determine in step S102 whether or not the first processing device 27 indeed has capacity to process all the data scheduled for transmission according to the scheduling of the top-right diagram.
  • the scheduling of the top-right scheduling diagram will not be performed.
  • the scheduler 24 may than have to revert to the scheduling of the top-left scheduling diagram.
  • step 8103a the second processing device is deactivated in step 8103a and the scheduling of the top-right scheduling diagram is performed in step S104, i.e. all data is transferred via the first processing device 27.
  • the control signal sent from the scheduler 24 in step 8103a to the path selector will thus indicate that all the scheduled data should be routed via the first processing device 27.
  • the path selector 26 will - in this example via a power or clock controller 29 - advantageously deactivate the second processing device 28 in order to decrease the energy consumption of the RBS 20.
  • the power/ clock controller 29 may alternatively be implemented inside the scheduler 24.
  • the power amplifier 23 may be subjected to MSTx via the bias controller 25 (in the example of Figure 4 in the seventh empty time slot). It may further be envisaged that for instance the data of the first time slot is scheduled to reside in the second time slot, such that the first time slot becomes empty for enabling MSTx.
  • the scheduled data is thus routed via the path selector 26 and the first processing device 27 and is transmitted via the power amplifier 23 over the RBS antenna for communication to intended recipient(s).
  • the scheduling solution provided with this exemplifying embodiment advantageously ensures that delay-sensitive data (e.g. speech) is scheduled to be transmitted with no or small delay using the required bandwidth, while delay-tolerant data is transmitted with some delay utilizing reduced bandwidth which allows one or more selected processing devices (in this case the second processing device 28) to be deactivated, i.e. turned off or set in idle or low- power mode, in order to reduce energy consumption of the RBS 20. As a consequence, the energy consumption of the RBS 20 is decreased without notably affecting an end-user.
  • delay-sensitive data e.g. speech
  • delay-tolerant data is transmitted with some delay utilizing reduced bandwidth which allows one or more selected processing devices (in this case the second processing device 28) to be deactivated, i.e. turned off or set in idle or low- power mode, in order to reduce energy consumption of the RBS 20.
  • the energy consumption of the RBS 20 is decreased without notably affecting an end-user.
  • the scheduler 24 acquires information about the energy consumption associated with the two candidate configurations. This information can e.g. be provided by the radio unit 22 or it can be provided by a function in the baseband unit 21.
  • the RBS 20 of the embodiment described in Figure 4 will accomplish decrease in energy consumption even when MSTx cannot be applied since selected processing devices still will be deactivated thereby avoiding the full-bandwidth processing illustrated in the fourth time slot of the left-most scheduling diagram of Figure 4, even if the power amplifier 23 is powered on.
  • reduced energy consumption results in reduced heat generation leading to relaxed requirements for thermal design of the RBS 20 which typically results in lower product weight and volume or increased thermal performance for a given physical size or deployment. This will typically further reduce energy-related operational expenses (OPEX) for network operators and environmental impact of wireless communications networks.
  • OPEX operational expenses
  • reduced temperature also reduces current leakage of digital components as well as noise of analogue components.
  • BWP active bandwidth part
  • DPD digital pre-distortion
  • the clipping algorithm and/or the DPD processing is adapted to the bandwidth of the scheduled signal in order to minimize the amount of processing required and to enable further processing resources to be deactivated in the radio units when the scheduled bandwidth is low. It may thus e.g. be envisaged that (cf. the embodiment of Figure 2) a selection is made between two different DPD algorithms, where one results in lower energy consumption of the RBS in which case the lower-energy DPD algorithm is used and data is scheduled accordingly, for instance by the scheduler reducing data bandwidth before any DPD processing is performed on the data.
  • the radio requirements are also relaxed. This may enable the radio unit to e.g. change bias, reduce drain power, reduced DC/DC power drain (which may enable a reconfiguration of the DC/DC system e.g. by changing DC/DC switching frequency).
  • the power amplifier may e.g. be put in a lower power class when the bandwidth is reduced.
  • the scheduler may reduce energy consumption of the RBS by combining various actions, such as controlling PA bias voltage as proposed in Figure 2 and at the same time deactivate processing devices as proposed in Figure 5.
  • a hardware-aware LESS scheduler may evaluate the energy consumption related to required configuration of analogue components (such as PAs). For example, a high modulation order may result in lower bandwidth being scheduled (resulting in reduced digital processing) while at the same time requiring a larger bias back-off configuration of the PAs, resulting in reduced PA efficiency and increased power consumption and heat generation from the analogue components.
  • the hardware aware LESS scheduler hence operates by reducing the required PA backoff. The scheduler may do this by utilizing a low modulation order which allows for less PA backoff.
  • the radio unit 22 is in this exemplifying embodiment illustrated to comprise two processing devices 27, 28 being selectable by the path selector 26.
  • the path selector 26 maybe connected to tens of processing devices via which scheduled data selectively is routed. For instance, it maybe envisaged that a first subset of scheduled data is routed over a first processing device, a second subset of data is routed via a second processing device, while for instance a third and a fourth processing device are deactivated to reduce energy consumption.
  • N 2, and:
  • n processors are active when a fraction n I N of the bandwidth is scheduled, n
  • the scheduler 24 can prioritize to avoid activating an additional processing device when that processing device is not required but where data still can be scheduled and transmitted with sufficient capacity.
  • Large packets of delay-tolerant data can e.g. be transmitted over several transmission time intervals (TTI) instead of a single TTI.
  • TTI transmission time intervals
  • the scheduler 24 acquires data in step S101 which when routed separately over the first, second and third processing device would result in fullbandwidth downlink transmission with a given energy consumption. Now, as the number of different processing devices via which different subsets of data can be routed, the number of scheduling alternatives increases.
  • the scheduler 24 determines in step S102 that data adequately can be processed if either one of two alternative schedulings is selected: - 1 st configuration: routing the data subset which when scheduled to be routed over the second processing device would have resulted in a first RBS energy consumption could alternatively be routed over the first processing device thereby resulting in a second, lower RBS energy consumption; and
  • the scheduler 24 will hence in step S103 select the most optimal of the possible scheduled routings.
  • the 2 nd configuration i.e. the shared routing where 70% is routed over the first processing device and 30% is routed over the third processing device results in a lowest RBS energy consumption.
  • the most optimal routing is thus selected by the scheduler 24 while sending an instruction to the path selector 26 to deactivate the second processing device 28.
  • the scheduler will not necessarily select the configuration resulting in the lowest energy consumption, but may select the configuration resulting in a next-lowest energy consumption. In other words, the scheduler will select an RBS configuration which enables a decrease in power consumption, and will thus avoid selecting the configuration which results in the highest consumption (unless no other configurations are available).
  • the scheduler 24 has access to a power consumption model of the RBS 20. Multiple scheduling alternatives can then be compared in terms of which energy consumption is associated with each alternative.
  • the baseband unit 21 maybe configured with a power consumption model of the attached radio unit 22, which maybe modified in case the radio unit 22 is changed or if further radio units are added.
  • the scheduler 24 is equipped with machinelearning (ML) capabilities for determining the energy consumption associated with each scheduled routing alternative.
  • ML machinelearning
  • the scheduler 24 is configured with an interface via which it is capable of receiving information regarding hardware setup of the radio unit 22, i.e. in this case that two processing devices 27, 28 are selectable for routing of scheduled data to be transmitted in the downlink.
  • This hardware information may be provided to the scheduler 24 by some other node in the communications such as an Operations Support System (OSS) or manually by an operator, or by a bootstrap protocol where the radio unit 22 provides the scheduler 24 with the information.
  • OSS Operations Support System
  • the information maybe hardcoded in the scheduler 24.
  • the first two options are more advantageous since the information maybe updated in case the hardware of the radio unit 22 is modified, for instance in case further radio units 22 are added to the RBS 20.
  • the previously mentioned power consumption model of the RBS 20 may also be provided via the interface.
  • Figure 7 illustrates an example hardware configuration where energy consumption will be calculated for illustrative purposes.
  • a first path selector 31 determines whether or not data is to be routed via one or more Type A processors 32, 33 before the data is routed via a multiplexer 34.
  • the Type A processors 32, 33 performs bandwidth-related processing.
  • a second path selector 35 determines whether or not multiplexed data is to be routed via one or more Type B processors 36, 37 before the data is transmitted via a respective antenna sub-array 38, 39.
  • the Type B processors performs antenna-related processing.
  • Total power consumption of the configuration of Figure 7 may be expressed as:
  • P to t denotes total power consumption
  • P o is a fixed base power consumption that does not depend on any scheduling decision
  • PA is the power consumed by each activated Type A processor 32, 33
  • PB is the power consumed by each activated Type B processor 36, 37
  • PRF total radio frequency power
  • CPA denotes efficiency of the power amplifier.
  • PRBs physical resource blocks
  • FIG 8 illustrates a further scenario where an embodiment is implemented in which the processing devices constitute antenna elements or preprocessing devices for processing data prior to the data being transmitted over the antenna elements.
  • an AAS 40 of an RBS comprising 64 antenna elements arranged in an 8x8-element array, where four processing devices 41, 42, 43, 44 are implemented each to control a 4x4-size subarray 45, 46, 47, 48, respectively.
  • each processing device controls a total of 16 antenna elements/ antenna branches.
  • a scheduler 49 of the RBS on which the AAS 40 is mounted schedules data to be transmitted by the RBS in the downlink such that a minimum of antenna elements are used while still providing the capacity required to transmit the scheduled data in the downlink over the AAS 40.
  • the processing units 41-44 may be assigned processing tasks such as digital frontend (DFE) processing that may comprise of several functions such as digital pre-distortion, filtering, multiple-input and multiple-output (MIMO) processing, etc.,
  • DFE digital frontend
  • MIMO multiple-input and multiple-output
  • the scheduler 49 may conclude that second processing unit 42 and thus the corresponding sub-array 46 is to be deactivated since end-users in a same horizontal plane, or in a same part of a sector can be scheduled simultaneously by creating a wider beam using fewer antenna elements, in this particular example the antenna elements of sub-arrays 45, 47 and 48, given that the antenna elements have sufficient capacity to process the data - i.e. in this case having capacity to transmit the data to the intended user(s) using a reduced number of antenna elements - even if the second processing unit 42 is deactivated. This will decrease both digital and radio frequency (RF) energy consumption of the RBS.
  • RF radio frequency
  • users are grouped by the scheduler in the terms of spatial characteristics such that individual antenna elements can be turned off.
  • the scheduler 49 deactivates every second row or column in the AAS 40 while ensuring that the remaining active antenna elements have capacity to transmit the data.
  • FIG. 9 illustrates an RBS 20 configured to schedule data for transmission.
  • the steps of the method performed by the scheduler of the RBS 20 are in practice performed by a processing unit 121 embodied in the form of one or more microprocessors arranged to execute a computer program 122 downloaded to a suitable storage volatile medium 123 associated with the microprocessor, such as a Random Access Memory (RAM), or a non-volatile storage medium such as a Flash memory or a hard disk drive.
  • the processing unit 121 is arranged to cause the RBS 20 to carry out the method according to embodiments when the appropriate computer program 122 comprising computer-executable instructions is downloaded to the storage medium 123 and executed by the processing unit 121.
  • the storage medium 123 may also be a computer program product comprising the computer program 122.
  • the computer program 122 maybe transferred to the storage medium 123 by means of a suitable computer program product, such as a Digital Versatile Disc (DVD) or a memory stick.
  • DVD Digital Versatile Disc
  • the computer program 122 may be downloaded to the storage medium 123 over a network.
  • the processing unit 121 may alternatively be embodied in the form of a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field-programmable gate array (FPGA), a complex programmable logic device (CPLD), etc

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  • Computer Networks & Wireless Communication (AREA)
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Abstract

La présente divulgation concerne un procédé d'une station de base radio (20) consistant à planifier des données pour une transmission en liaison descendante et d'une station de base radio (20) exécutant le procédé. Selon un aspect, l'invention concerne un procédé d'une station de base radio (20) consistant à planifier des données pour une transmission. Le procédé consiste à acquérir (S101) les données à planifier pour une transmission, une pluralité de configurations de station de base radio pouvant être utilisées pour traiter les données à planifier, à déterminer (S102), parmi la pluralité de configurations de station de base radio, au moins deux configurations de station de base radio ayant la capacité de traiter les données à planifier pour la transmission, à sélectionner (S103), parmi les au moins deux configurations de station de base radio déterminées comme ayant la capacité de traiter les données à planifier pour une transmission, une configuration de station de base radio permettant d'obtenir une consommation d'énergie de station de base radio plus faible et à planifier (S104) les données pour une transmission avec la station de base radio qui a été définie conformément à la configuration de station de base radio sélectionnée.
PCT/SE2020/050884 2020-09-22 2020-09-22 Planification sensible au matériel radio WO2022066068A1 (fr)

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WO2010101497A1 (fr) * 2009-03-03 2010-09-10 Telefonaktiebolaget L M Ericsson (Publ) Station de base et procédé servant à la définition contrôlée par un ordonnanceur de la puissance de sortie d'un amplificateur de puissance d'une station de base
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