WO2023200683A1 - Système et procédé pour la signalisation dynamique marche/arrêt d'un réseau - Google Patents

Système et procédé pour la signalisation dynamique marche/arrêt d'un réseau Download PDF

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Publication number
WO2023200683A1
WO2023200683A1 PCT/US2023/017883 US2023017883W WO2023200683A1 WO 2023200683 A1 WO2023200683 A1 WO 2023200683A1 US 2023017883 W US2023017883 W US 2023017883W WO 2023200683 A1 WO2023200683 A1 WO 2023200683A1
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WIPO (PCT)
Prior art keywords
dynamic
state
base station
message
period
Prior art date
Application number
PCT/US2023/017883
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English (en)
Inventor
Sigen Ye
Yushu Zhang
Chunhai Yao
Hong He
Wei Zeng
Dawei Zhang
Seyed Ali Akbar Fakoorian
Oghenekome Oteri
Chunxuan Ye
Original Assignee
Apple Inc.
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
Priority claimed from US18/131,742 external-priority patent/US20230328655A1/en
Application filed by Apple Inc. filed Critical Apple Inc.
Publication of WO2023200683A1 publication Critical patent/WO2023200683A1/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
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0212—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave
    • H04W52/0216—Power saving arrangements in terminal devices managed by the network, e.g. network or access point is master and terminal is slave using a pre-established activity schedule, e.g. traffic indication frame
    • 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
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0241—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal where no transmission is received, e.g. out of range of the transmitter
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/20—Manipulation of established connections
    • H04W76/28—Discontinuous transmission [DTX]; Discontinuous reception [DRX]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices

Definitions

  • the described aspects generally relate to an enhancement in wireless communication.
  • Different methods of energy saving may involve actions taken by the user equipment (UE), while others may involve action of the base station (eNB or gNB).
  • UE user equipment
  • eNB base station
  • gNB base station
  • Some aspects of this disclosure relate to apparatuses and methods for implementing an enhancement in wireless communications. For example, systems and methods are provided for implementing power saving at a base station and notifying UEs of the power saving measures.
  • a base station comprising a transceiver configured to communicate wireless signals with a user equipment (UE) and one or more processors.
  • the one or more processors are configured to determine a dynamic off state for the base station, the dynamic off state suspending at least one of downlink (DL) transmission or uplink (UL) reception during a dynamic off period.
  • the one or more processors are further configured to determine the dynamic off period for the base station during which to apply the dynamic off state, generate a downlink control information (DCI) message having a slot format indicator that identifies the dynamic off state and the dynamic off period, and transmit, via the radio transceiver, the DCI message to the UE.
  • DCI downlink control information
  • the one or more processors are further configured to enter the dynamic off state.
  • the DCI message with the slot format indicator includes a newly-defined DCI value that includes one of a plurality of dynamic off states.
  • the one or more processors are further configured to generate an entry within the slot format indicator of the DCI message that includes the newly- defined value associated with the dynamic off state.
  • the one or more processors are further configured to generate the DCI message with an explicit beam index.
  • the explicit beam index is included within a predefined field of the DCI message.
  • a method for initiating a dynamic off period at a base station includes determining a dynamic off state for the base station during which at least one of downlink (DL) transmission or uplink (UL) reception is suspended. The method further includes determining a dynamic off period during which to apply the dynamic off state, generating a downlink control information (DCI) message having a slot format indicator that identifies the dynamic off state and the dynamic off period, and transmitting the DCI message to the UE.
  • DCI downlink control information
  • the method further includes entering the dynamic off state.
  • the slot format indicator of the DCI message includes a newly- defined DCI value corresponding to the dynamic off state.
  • the method further includes generating an entry within the slot format indicator of the DCI message that includes the newly-defined value associated with the dynamic off state.
  • the method includes generating the DCI message with an explicit beam index.
  • the explicit beam index is included within a predefined field of the DCI message.
  • a method for initiating a dynamic off period at a base station includes determining a dynamic off state for the base station, determining a dynamic off period during which to apply the dynamic off state, determining dynamic off parameters associated with the dynamic off state, determining an application delay that defines a starting point of the dynamic off period.
  • the method further includes generating a notification message that includes information relating to the dynamic off state, the dynamic off period, the dynamic off parameters, and the application delay, transmitting the notification message to a user equipment (UE), and entering the dynamic off state according to the dynamic off parameters after an elapse of the application delay.
  • UE user equipment
  • the dynamic off parameters indicate whether downlink transmission will be suspended during the dynamic off period, and whether uplink reception will be suspended during the dynamic off period.
  • the dynamic off parameters include indications of one or more cells to which the dynamic off parameters apply.
  • the dynamic off parameters include indications of one or more beams to which the dynamic off parameters apply.
  • the application delay defines an amount of delay between transmission of the notification message and a start of the dynamic off period.
  • the notification message includes a plurality of cell indices for identifying cell-specific parameters.
  • the base station determines a periodicity with which the dynamic off period will be applied, the periodicity defining an on/off pattern for the dynamic off period.
  • the dynamic off period is a one-time duration.
  • a user equipment includes a transceiver configured to communicate wireless signals with a base station and one or more processors.
  • the one or more processors are configured to receive a downlink control information (DCI) message having a slot format indicator from a base station, parse the received DCI message, identify a dynamic off state from the parsed DCI message, and enter the dynamic off state.
  • DCI downlink control information
  • the DCI message includes at least one DCI extension value that identifies the dynamic off state, and the parsing of the received DCI message includes an extraction of the at least one DCI extension value.
  • the parsing includes extracting dynamic off information from the dynamic off state.
  • the dynamic off state identifies at least one of uplink reception or downlink transmission that is suspended at the base station.
  • the one or more processors are further configured to withhold messages to be transmitted to the base station during the dynamic off state.
  • the one or more processors are further configured to enter a low-power state during the dynamic off state.
  • a user equipment includes a transceiver configured to communicate wireless signals with a base station and one or more processors.
  • the one or more processors are configured to receive a notification message from the base station, parse the notification message according to a stored message structure, identify based on the parsing a dynamic off state included in the notification message, and enter the dynamic off state
  • the one or more processors are further configured to identify an application delay included in the notification message, wherein the dynamic off state is entered after an elapse of the application delay.
  • the dynamic off state indicates that at least one of downlink transmission or uplink reception will be suspended at the base station.
  • the notification message identifies one or more cells to which the dynamic off state applies.
  • the notification message identifies one or more beams to which the dynamic off state applies.
  • the one or more processors are further configured to withhold messages to be transmitted to the base station during the dynamic off state.
  • the one or more processors are further configured to enter a low-power state during the dynamic off state.
  • FIG. 1 illustrates an exemplary wireless communication environment according to some aspects of the disclosure.
  • FIG. 2 illustrates a block diagram of an exemplary wireless communication system, according to aspects of the disclosure.
  • FIG. 3 A illustrates exemplary format definitions for a dynamic off signaling according to aspects of the disclosure.
  • FIG. 3B illustrates exemplary slot configurations for a dynamic off signaling according to aspects of the disclosure.
  • FIG. 4A illustrates an exemplary notification message according to embodiments of the present disclosure.
  • FIG. 4B illustrates an exemplary notification message according to embodiments of the present disclosure.
  • FIG. 5 illustrates a flowchart diagram of an exemplary method for signaling a dynamic on/off according aspects of the disclosure.
  • FIG. 6 illustrates a flowchart diagram of an exemplary method for signaling a dynamic on/off according aspects of the disclosure.
  • FIG. 7 illustrates a flowchart diagram of an exemplary method for processing a DCI message according to aspects of the disclosure
  • FIG. 8 illustrates a flowchart diagram of an exemplary method for processing a notification message according to aspects of the disclosure
  • FIG. 9 illustrates an example computer system for implementing some aspects of the disclosure or portion(s) thereof.
  • Some aspects of this disclosure include apparatuses and methods for implementing enhancements to wireless communications. For example, systems and methods are provided for implementing dynamic on/off by a base station operating in a wireless network.
  • FIG. 1 illustrates an exemplary wireless communication environment 100 according to some aspects of the disclosure.
  • a base station 110 is positioned within a wireless communication network for communicating with user equipment (UE) devices 120.
  • the UEs may include cellular telephones (e.g., 120a), laptop computers (e.g., 120b) or other electronic communication devices connected to the network by way of the base station 110.
  • the base station In a 4G network, the base station is referred to as an evolved node b (eNB), whereas in a 5G network, the base station is referred to as next generation node b (gNB).
  • eNB evolved node b
  • gNB next generation node b
  • the principles and aspects of this disclosure are equally applicable to both eNBs and gNBs. Therefore, for purposes of this disclosure, the base station 110 will be referred to simply as “base station.” Meanwhile, network capable user devices will be referred to herein as “user equipment” or “UE”.
  • the base station 110 provides gateway connectivity between the UEs 120 and the network 150.
  • the base station 110 transmits signals from the network to the UEs 120, and receives signals from the UEs 120 for delivery to the network 150.
  • the base station 110 may occasionally enter into a power saving mode, otherwise referred to as a dynamic off mode.
  • FIG. 2 illustrates a block diagram of an exemplary wireless communication system 200, according to some aspects of the disclosure.
  • System 200 may be any of the electronic devices (e.g., base station 110, UE 120) of system 100.
  • System 200 includes processor 210, one or more transceivers 220a-220n, communication infrastructure 240, memory 250, operating system 252, application 254, and antenna 260.
  • Illustrated systems are provided as exemplary parts of system 200, and system 200 can include other circuit(s) and subsystem(s).
  • the systems of system 200 are illustrated as separate components, the aspects of this disclosure can include any combination of these, less, or more components.
  • Memory 250 may include random access memory (RAM) and/or cache, and may include control logic (e.g., computer software) and/or data. Memory 250 may include other storage devices or memory such as, but not limited to, a hard disk drive and/or a removable storage device/unit. According to some examples, operating system 252 can be stored in memory 250. Operating system 252 can manage transfer of data from memory 250 and/or one or more applications 254 to processor 210 and/or one or more transceivers 220a-220n. In some examples, operating system 252 maintains one or more network protocol stacks (e.g., Internet protocol stack, cellular protocol stack, and the like) that can include a number of logical layers. At corresponding layers of the protocol stack, operating system 252 includes control mechanism and data structures to perform the functions associated with that layer.
  • network protocol stacks e.g., Internet protocol stack, cellular protocol stack, and the like
  • application 254 can be stored in memory 250.
  • Application 254 can include applications (e.g., user applications) used by wireless system 200 and/or a user of wireless system 200.
  • the applications in application 254 can include applications such as, but not limited to, automated assistant, video calling, radio streaming, video streaming, remote control, and/or other user applications.
  • System 200 can also include communication infrastructure 240.
  • Communication infrastructure 240 provides communication between, for example, processor 210, one or more transceivers 220a-220n, and memory 250.
  • communication infrastructure 240 may be a bus.
  • Processor 210 together with instructions stored in memory 250 performs operations enabling system 200 of system 100 to implement mechanisms for performing dynamic off application and signaling, as discussed herein.
  • One or more transceivers 220a-220n transmit and receive communications signals that support mechanisms for performing dynamic off application and signaling, as discussed herein, according to some aspects, and may be coupled to antenna 260.
  • Antenna 260 may include one or more antennas that may be the same or different types.
  • One or more transceivers 220a-220n allow system 200 to communicate with other devices that may be wired and/or wireless.
  • one or more transceivers 220a-220n can include processors, controllers, radios, sockets, plugs, buffers, and like circuits/devices used for connecting to and communication on networks.
  • one or more transceivers 220a-220n include one or more circuits to connect to and communicate on wired and/or wireless networks.
  • one or more transceivers 220a-220n can include a cellular subsystem, a WLAN subsystem, and/or a BluetoothTM subsystem, each including its own radio transceiver and protocol(s) as will be understood by those skilled arts based on the discussion provided herein.
  • one or more transceivers 220a-220n can include more or fewer systems for communicating with other devices.
  • one or more transceivers 220a-220n can include one or more circuits (including a WLAN transceiver) to enable connection(s) and communication over WLAN networks such as, but not limited to, networks based on standards described in IEEE 802.11. Additionally, or alternatively, one or more transceivers 220a-220n can include one or more circuits (including a BluetoothTM transceiver) to enable connection(s) and communication based on, for example, BluetoothTM protocol, the BluetoothTM Low Energy protocol, or the BluetoothTM Low Energy Long Range protocol. For example, transceiver 220n can include a BluetoothTM transceiver.
  • one or more transceivers 220a-220n can include one or more circuits (including a cellular transceiver) for connecting to and communicating on cellular networks.
  • the cellular networks can include, but are not limited to, 3G/4G/5G networks such as Universal Mobile Telecommunications System (UMTS), Long-Term Evolution (LTE), New Radio (NR) and the like.
  • UMTS Universal Mobile Telecommunications System
  • LTE Long-Term Evolution
  • NR New Radio
  • one or more transceivers 220a-220n can be configured to operate according to one or more of Release-15, Release-16, Release-17, or later of 3GPP standard.
  • processor 210 alone or in combination with computer instructions stored within memory 250, and/or one or more transceiver 220a-220n, implements mechanisms for performing dynamic off application and signaling, as discussed herein.
  • processor 210 can be configured to determine dynamic off periods and to generate notification messages, and transceiver 220 is configured to send the dynamic off notification messages to UEs for implementing dynamic off periods.
  • the transceivers 220 can be configured to receive dynamic off notification messages from the base station, and the processor 210 can be configured to parse the received dynamic off notification messages and to implement the communication restrictions defined by those dynamic off notification messages.
  • a base station implements power saving and DCI formatting controlled and determined by its processor 210.
  • the power saving is configured to determine whether and when the base station should enter a dynamic off state, and to what extent. For example, in different situations, the base station may determine that only downlink transmission is permitted, only uplink reception is permitted, or that neither downlink transmission nor uplink reception is permitted. Each of these different options is considered a different dynamic off state.
  • the base station Based on the dynamic off state that is selected, the base station generates the proper signaling for notifying the UE.
  • the base station signals the power saving state to the UE through the use of a slot format indicator.
  • the slot format indicator is generated by modifying an existing DCI message.
  • the DCI message is a DCI format 2 0 message.
  • DCI is a signaling mechanism that allows the network to dynamically indicate the slot formats (e.g., indicating which symbols are Downlink (DL), Uplink (UL), or flexible within a slot) for a number of slots. To do this, the DCI message uses a slot format indicator.
  • Radio Resource Control (RRC) signaling includes a SlotFormatCombinationsPerCell field that defines all the possible slot formats that can be indicated by DCI message.
  • the slot format indicator of the DCI message points to an entry in a SlotFormatCombinations field within the SlotFormatCombinationsPerCell .
  • the slot format is an index value between 0 and 255. However, only values 0-55 and 255 are currently defined, while values 56-254 are undefined, and therefore available for extension.
  • new states in addition to the standard DL, UL and flexible states are defined.
  • these new states also called “power saving states” or “dynamic off states”.
  • SI no DL transmission or UL reception
  • the base station processor 210 generates the states and associated DCI values and generates the DCI message for transmitting to the UE, to inform the UE of the selected dynamic off state(s).
  • the DCI message of the present disclosure can be modified to include such an indication.
  • the beam index is explicitly included in the DCI message, such as by definition of beam-specific states or through the use of one or more of the available index values. This allows the indication for multiple beams to be included in a single message, and can still allow legacy UEs to receive the same DCI message since they will simply ignore the new fields.
  • the beam indication is implicitly carried in the signal that is scrambled in a beam-specific manner. For example, currently, a Cyclic Redundancy Check (CRC) scrambles the DCI message based on a corresponding Radio Network Temporary Identifier (RNTI).
  • CRC Cyclic Redundancy Check
  • the scrambling can further depend upon the beam index, which will allow for the beam indication to be detected by the UE upon descrambling of the DCI.
  • the physical signal e.g., Physical Downlink Control Channel (PDDCH) can be scrambled by the beam index. While the latter embodiment has benefits in that it does not require explicit beam indexing in the DCI, these DCI signals will no longer be able to be processed by legacy UEs.
  • PDDCH Physical Downlink Control Channel
  • FIG. 3 A illustrates exemplary format definitions for a dynamic off signaling according to aspects of the disclosure.
  • the format definition table defines three new slot formats associated with values 56-58 of the DCI message.
  • Each of the formats includes states associated with different symbol numbers 340.
  • each format is constructed with the selected state in each of its symbols. For example, format_56 310 (corresponding to value 56) identifies state SI for each slot 340a.
  • format_57 320 (corresponding to value 57) identifies state S2 for each slot 340b.
  • format_58 330 (corresponding to value 58) identifies state S3 for each slot 340c.
  • format 56-58 can be referred to as “extension values” Therefore, when the DCI message is generated, identifying value 56, for example, it will inform the UE the state SI is to be invoked during the corresponding time period.
  • This is exemplified in Fig. 3B.
  • a mix of SI, S2, S3 and/or the legacy states (‘D’, ‘U’, ‘F’) can be used for different symbols in a slot format.
  • new entries for the slot formats can be pre-defined in the standards (as for DCI messages in legacy systems) or configured or a mix of both.
  • FIG. 3B illustrates exemplary slot configurations for a dynamic off signaling according to aspects of the disclosure.
  • Fig. 3B discloses four example entries within the DCI message.
  • the example entries 360 each include five slots, assuming that the UL/DL configuration is configured by tdd-UL-DL-ConfigurationCommon with a periodicity of five slots.
  • the disclosure is not limited to 5 slots, as any number of slots can be used.
  • Entry 1 360a defines the first and second slots as having value 57, which is defined above as corresponding to state S2 (no DL transmission, UL reception follows other signaling). The remaining three slots of Entry 1 360a are set to value 255. Similarly, the first two slots of Entry 2 360b are set to value 58, which is defined above as corresponding to state S3 (no UL reception, but DL transmission follows other signaling). The remaining three slots are set to value 255.
  • Entry 3 360c sets all five slots to value 56, which is defined above as corresponding to value SI (no DL transmission or UL reception).
  • Entry 4 360d sets the first three slots to value 56 (e.g., state SI), and the remaining two slots to value 255.
  • entries indicate to the UE the different dynamic off states.
  • value 255 informs the UE to follow the RRC configuration for that slot as specified in TS 38.213.
  • Entry 1 360a specifies no DL transmission for the next two slots
  • Entry 2 360b specifies no UL reception for the next two slots
  • Entry 3 360c specifies no DL or UL for the next 5 five slots
  • Entry 4 360d specifies no DL or UL for the next three slots. After each of those periods, the UE reverts to follow the RRC configuration as defined by value 255.
  • the transceiver 220 transmits the DCI message to the UE via the antenna 260 to notify the UE of the power saving being initiated by the base station.
  • the base station instead generates a notification message.
  • a notification message provides more flexibility in design, without having to adhere to the existing framework of the DCI message.
  • the base station 205 can indicate a common off duration that is applicable for both DL and UL.
  • the base station 205 can separately indicate the off duration for DL and UL, either in a single message or across two separate messages.
  • the indication is broadcast to all UEs (e.g., in a System Information Block (SIB) or a DCI message that is addressed to all UEs), or transmitted in a group-common message (e.g, a DCI message that is addressed to multiple UEs).
  • SIB System Information Block
  • This notification message may be transmitted by itself as a separate notification message, or transmitted together with other information in a message.
  • the indication may be beam-specific or common for all beams.
  • a beam index is explicitly included within the power saving message. This allows the indication for multiple beams to be included in a single message.
  • the indication is implied based on the scrambling of the message in a beam-specific manner. As discussed above, scrambling of the message can be performed based on the corresponding RNTI.
  • the physical signal e.g., PDDCH
  • PDDCH can be scrambled by the beam index.
  • the off duration/pattem can be defined. This may be defined as a one-time off duration that is either pre-defined or dynamically indicated.
  • a periodicity e.g., on/off pattern
  • the periodicity can be pre- defined/configured and is activated/deactivated by the message, or is selected from one of many different pre-defined/configured options by the message.
  • an application delay can also be defined by either the notification message or the DCI message.
  • an application delay may be necessary for the dynamic off indication because the UE needs time to decode/parse the message and take corresponding action (e.g., to cancel transmission/reception when necessary).
  • the application delay is predefined (e.g., based on the processing time needed at the UE).
  • the application delay is dynamically indicated by the base station. In this latter embodiment, a minimum value may be defined.
  • the application delay may be separately defined for DL and UL. In some embodiments, there may be no application delay for DL (similar to how DL for DCI is defined today), as the UE may be able to revert DL processing after decoding DCI.
  • the notification message can also define an off state for DL, or UL, or both.
  • two states are defined: (1) on; or (2) no DL/UL. This requires only a single bit in the state field of the notification message.
  • four states are defined: (1) on; (2) no DL/UL; (3) no DL; or (4) no UL. This requires two bits for the state field.
  • the notification message also includes a cell index field (e.g., in case of carrier aggregation).
  • the cell index field indicates which cell the dynamic off indication is for. This requires the base station to define cell indices in a way that is commonly understood by all the UEs.
  • the indication for multiple cells can be carried by separately signaling the order of the cells in the message, or by signaling the location of each cell in the message.
  • the notification message also includes a beam index field.
  • the beam index is a Synchronization Signal Block (SSB) index, which is commonly understood by all UEs.
  • the beam index is a Transmission Configuration Indicator (TCI) state index, which is UE-specifically configured.
  • TCI Transmission Configuration Indicator
  • the network must ensure that the configurations are aligned among the UEs so that the UEs interpret the TCI state index in the same way.
  • the beam index is implied, and not explicitly defined in the message.
  • FIG. 4A illustrates an exemplary notification message 400A according to embodiments of the present disclosure.
  • the message 400A is configured to explicitly identify the cells to which the various parameters apply.
  • the message 400A includes different segments 410, 420 associated with different cells. Each segment therefore includes a cell index 412 to identify the cell to which that segment applies.
  • cell index 1 412a identifies a first cell. Then, within the segment 410, an off state 414a and an off duration 416a are also defined.
  • the off state 414a indicates the type of off state that will be applied to this cell (e.g., SI, S2, or S3, above), and the off duration 416a identifies an amount of time the cell will apply the off state.
  • cell index 2 412b identifies the cell to which the parameters apply.
  • off state 414b indicates the off state that will be applied to the cell and off duration 416b indicates the length of time the cell will be in that off state. This pattern can be repeated for any number of segments associated with any number of cells.
  • FIG. 4B illustrates an exemplary notification message 400B according to embodiments of the present disclosure.
  • the message 400B is configured to implicitly identify the cells to which the various parameters apply. In the example of Fig. 4B, this is accomplished based on the configuration of the message 400B. For example, as shown in Fig. 4B, the message 400B has a predefined configuration. In Fig. 4B, the message 400B has a configuration such that a first cell’s parameters 450 are defined in the first 6+ fields.
  • Beam indexes 402a, 402b, etc. identify the beams to which the specific parameters apply, whereas the off states define the states to be applied to those beams for the first cell (e.g., SI, S2, or S3), and off duration defines the length of time those beams will remain in the indicated off state for the first cell. This pattern is then repeated for a second cell 470. These include beam index 402n, off state 404n, and off duration 406n, etc.
  • the UE knows the configuration of the message 400B in advance, the UE will be able to process the received notification message appropriately.
  • the transceiver 220 transmits the message to the UE via antenna 260.
  • the message is received by the transceiver 220 of the UE via the antenna 260.
  • the UE via processor 210, then parses the received message.
  • the UE parses the message according to the predefined message configuration (discussed above) in order to identify the off states and off durations that are to be applied to the various beams and cells.
  • the message is parsed according to the DCI standard, but with additional processing to recognize the new values 56-58, described herein. As a result, the message parsing identifies the cells and the off states and off durations to be applied to those cells.
  • the extracted information is used to control transmission and reception by the UE according to the extracted parameters. Specifically, the UE does not transmit UL messages to the BS during states SI and S3. During S2, the UE is informed that no messages will be received, due to DL transmission being halted at the base station during state S2. These off states are controlled according to the off states defined in the message and for the durations defined in the message. Once the duration ends, the communications infrastructure permits new signal transmissions to be provided to the transceiver for transmission to the base station.
  • an off state it may mean that the gNB stops transmitting periodic/semi-persistent signals that are broadcast or configured for UEs (e.g., SSB, periodic RS signals such as CSI-RS including tracking CSI-RS, PDCCH, SPS PDSCH), and/or stop receiving periodic/semi-persistent signals configured for UEs (e.g., periodic CSI, semi-persistent CSI, scheduling request, configured grant PUSCH).
  • periodic CSI periodic CSI
  • semi-persistent CSI scheduling request, configured grant PUSCH
  • it can be used to override the dynamically scheduled PDSCH/PUSCH/PUCCH/RS also.
  • FIG. 5 illustrates a flowchart diagram of an exemplary method 500 for signaling a dynamic on/off according aspects of the disclosure.
  • the method 500 begins with the base station determining a dynamic off state (505), which includes selecting the dynamic off state from one of a plurality of dynamic off states. Thereafter, the base station determines the dynamic off period during which to apply the dynamic off state (510). This can be repeated for multiple slots having corresponding periods. Once the dynamic off period(s) has been determined, the base station generates entries for use in the slot format indicator of a DCI message to identify the new states to be used during corresponding dynamic off periods (520).
  • the DCI message is a DCI format 2 0 message and these new states includes states SI, S2, and S3. Additionally, the entries reference new DCI formats each defined to set one of the new states, such as newly-defined formats (e.g., values) 56, 57, or 58, discussed above.
  • newly-defined formats e.g., values
  • the base station generates the DCI message with the new entries (530).
  • the base station then transmits the DCI message to the UE (540).
  • the base station enters the dynamic off mode (550) as specified in the DCI message. In this manner, the base station notifies UEs of a dynamic off state using the DCI message.
  • FIG. 6 illustrates a flowchart diagram of an exemplary method for signaling a dynamic on/off according aspects of the disclosure.
  • the base station first determines a dynamic off state during which one or more of uplink or downlink communications will be unavailable (605). The base station then determines a dynamic off period associated with the dynamic off state (610). In step 620, the base station determines the parameters associated with the dynamic off, such as the off state and off duration. Additionally, these parameters can be determined for each cell and/or each beam within each cell. Additional parameters may also be determined. In some embodiments, the base station also determines one of a periodicity with which to apply the dynamic off state. However, in other embodiments, the dynamic off state is applied for a one-time duration.
  • the base station determines whether to include an application delay, and if so, how much application delay to define.
  • the application delay defines an amount of delay between the transmitting of the signaling message and the entering of the dynamic off period.
  • the base station generates a notification message in step 640.
  • the notification message can explicitly identify the cells to which various parameters apply, or can be configured to imply the cells based on a known configuration of the message. In the latter scenario, the notification message can further include beam indications to dictate specific beams within the cell to which the various parameters apply.
  • the notification message is transmitted to the UE and a timer is started in step 650.
  • the timer is repeatedly compared against the application delay in step 655. If the timer is less than the application delay (655 - No), then the method returns to step 655 to once again check the time. If the timer is equal to or greater than the application delay (655 - Yes), then the base station enters the dynamic off mode in step 660.
  • FIG. 7 illustrates a flowchart diagram of an exemplary method 700 for processing a DCI message by a user equipment (UE) according to aspects of the disclosure.
  • the method begins the UE receiving the DCI message from the base station in step 710.
  • the DCI message may be a DCI format 2 0 message.
  • the UE parses the DCI message in step 720 according to the DCI standard.
  • parsing the message allows the UE to extract the DCI extension values defined for a DCI power saving implementation discussed above with respect to the base station operation.
  • the DCI extension values can be DCI format_56, DCI format_57, and DCI format_58, which identifies corresponding states SI, S2, S3, as discussed above with respect to Figs. 3A- 3B.
  • the UE Based on the parsing of the DCI message, the UE identifies a dynamic off state from DCI extension values in step 730. In an embodiment, this is done by the UE determining the states based on the extracted DCI extension values, and comparing them to predefined dynamic off states. For example, as discussed above, the states may include states SI, S2, and/or S3 that each define various power saving modes. Based on the determined state, the UE enters the dynamic off state in step 740. Depending on the identified dynamic off state, this step may require the UE to take action. For example, for states SI and S3, uplink reception at the base station is turned off.
  • the UE does not provide any uplink signals to the transceiver 220 for transmission to the base station during that time.
  • state S2 does not require any particular action on the part of the UE (because only downlink transmission is halted), the UE may enter a power saving state during that time period since the UE will not expect any signals to be received from the base station during that time.
  • FIG. 8 illustrates a flowchart diagram of an exemplary method 800 for processing a notification message by a UE according to aspects of the disclosure.
  • the UE receives a notification message in step 810.
  • the UE then parses the received notification message according to a stored message structure in step 820.
  • the message can be configured with a variety of different structures.
  • the UE is knowledgeable as to how the message format is defined, and so the UE can properly parse the message contents.
  • the UE identifies a dynamic off state included in the message in step 830.
  • the notification message can define any number of different dynamic off states, and can do so for different cells, beams, etc.
  • the notification message can also include an application delay, which the UE identifies based on the parsed information in step 840.
  • the UE then checks a current timer against the application delay in step 845 in order to determine whether the time has arrived to enter the dynamic off state. If the timer is less than the application delay (845 - No), then the UE returns to step 845 to again check whether the application delay has been met. If, on the other hand, the application delay has been met (845 - Yes), then the UE enters the dynamic off mode defined by the notification message in step 850. Once again, depending on the identified dynamic off mode, this step may require the UE to take action. For example, any state that prohibits uplink transmissions for any cell, beam, etc. will require the UE to restrict transmission to the base state for those cells, beams, etc.
  • the UE does not provide any uplink signals to the transceiver 220 for transmission to the base station during that time for those specific beams and/or cells.
  • Other dynamic off states may not require any particular action on the part of the UE (because only downlink transmission is halted). However, the UE may enter a power saving state during that time period since the UE will not expect any downlink signals to be received from the base station during that time.
  • Computer system 900 may be any well-known computer capable of performing the functions described herein such as the UE or base station illustrated as system 200 in FIG. 2.
  • Computer system 900 includes one or more processors (also called central processing units, or CPUs), such as a processor 904.
  • Processor 904 is connected to a communication infrastructure 906 (e.g., a bus.)
  • Computer system 900 also includes user input/output device(s) 903, such as monitors, keyboards, pointing devices, etc., that communicate with communication infrastructure 906 through user input/output interface(s) 902.
  • Computer system 900 also includes a main or primary memory 908, such as random access memory (RAM).
  • Main memory 908 may include one or more levels of cache.
  • Main memory 908 has stored therein control logic (e.g., computer software) and/or data.
  • Computer system 900 may also include one or more secondary storage devices or memory 910.
  • Secondary memory 910 may include, for example, a hard disk drive 912 and/or a removable storage device or drive 914.
  • Removable storage drive 914 may be a floppy disk drive, a magnetic tape drive, a compact disk drive, an optical storage device, tape backup device, and/or any other storage device/drive.
  • Removable storage drive 914 may interact with a removable storage unit 918.
  • Removable storage unit 918 includes a computer usable or readable storage device having stored thereon computer software (control logic) and/or data.
  • Removable storage unit 918 may be a floppy disk, magnetic tape, compact disk, DVD, optical storage disk, and/ any other computer data storage device.
  • Removable storage drive 914 reads from and/or writes to removable storage unit 918 in a well-known manner.
  • secondary memory 910 may include other means, instrumentalities or other approaches for allowing computer programs and/or other instructions and/or data to be accessed by computer system 900.
  • Such means, instrumentalities or other approaches may include, for example, a removable storage unit 922 and an interface 920.
  • the removable storage unit 922 and the interface 920 may include a program cartridge and cartridge interface (such as that found in video game devices), a removable memory chip (such as an EPROM or PROM) and associated socket, a memory stick and USB port, a memory card and associated memory card slot, and/or any other removable storage unit and associated interface.
  • Computer system 900 may further include a communication or network interface 924.
  • Communication interface 924 enables computer system 900 to communicate and interact with any combination of remote devices, remote networks, remote entities, etc. (individually and collectively referenced by reference number 928).
  • communication interface 924 may allow computer system 900 to communicate with remote devices 928 over communications path 926, which may be wired and/or wireless, and which may include any combination of LANs, WANs, the Internet, etc. Control logic and/or data may be transmitted to and from computer system 900 via communication path 926.
  • a tangible, non-transitory apparatus or article of manufacture includes a tangible, non-transitory computer useable or readable medium having control logic (software) stored thereon is also referred to herein as a computer program product or program storage device.
  • control logic software stored thereon
  • control logic when executed by one or more data processing devices (such as computer system 900), causes such data processing devices to operate as described herein.
  • personally identifiable information should follow privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining the privacy of users.
  • personally identifiable information data should be managed and handled so as to minimize risks of unintentional or unauthorized access or use, and the nature of authorized use should be clearly indicated to users.
  • the present disclosure contemplates that the entities responsible for the collection, analysis, disclosure, transfer, storage, or other use of such personal information data will comply with well-established privacy policies and/or privacy practices.
  • such entities should implement and consistently use privacy policies and practices that are generally recognized as meeting or exceeding industry or governmental requirements for maintaining personal information data private and secure.
  • Such policies should be easily accessible by users, and should be updated as the collection and/or use of data changes.
  • Personal information from users should be collected for legitimate and reasonable uses of the entity and not shared or sold outside of those legitimate uses. Further, such collection/sharing should only occur after receiving the informed consent of the users.
  • policies and practices should be adapted for the particular types of personal information data being collected and/or accessed and adapted to applicable laws and standards, including jurisdiction-specific considerations. For instance, in the US, collection of, or access to, certain health data may be governed by federal and/or state laws, such as the Health Insurance Portability and Accountability Act (HIPAA); whereas health data in other countries may be subject to other regulations and policies and should be handled accordingly. Hence different privacy practices should be maintained for different personal data types in each country.
  • HIPAA Health Insurance Portability and Accountability Act

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Une approche est décrite pour une période d'arrêt dynamique d'une station de base dans un environnement de communication sans fil et un processus de notification à un UE de la même chose. Dans un premier scénario, le message DCI est modifié avec des valeurs nouvellement définies indiquant les différents états d'économie d'énergie (c'est-à-dire les "états de désactivation dynamique") de la station de base. Ces états d'économie d'énergie peuvent être définis comme la suspension de la transmission sur la liaison descendante et de la réception sur la liaison montante, ou des deux. Dans un autre scénario, un nouveau message de notification est défini. Dans les deux cas, le signal de notification peut également inclure des paramètres spécifiques à la cellule et/ou au faisceau, ainsi qu'un délai d'invention qui définit une heure de début de la période d'arrêt dynamique.
PCT/US2023/017883 2022-04-11 2023-04-07 Système et procédé pour la signalisation dynamique marche/arrêt d'un réseau WO2023200683A1 (fr)

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US202263329586P 2022-04-11 2022-04-11
US63/329,586 2022-04-11
US18/131,742 2023-04-06
US18/131,742 US20230328655A1 (en) 2022-04-11 2023-04-06 System and method for network dynamic on/off signaling

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020146499A1 (fr) * 2019-01-08 2020-07-16 Hua Zhou Mécanisme d'économie d'énergie
WO2023091246A1 (fr) * 2021-11-18 2023-05-25 Qualcomm Incorporated Techniques pour configurer l'utilisation d'un mode d'économie d'énergie
WO2023087239A1 (fr) * 2021-11-19 2023-05-25 Zte Corporation Procédés, dispositifs et systèmes pour transmettre et recevoir un signal pour la gestion d'énergie
WO2023114493A1 (fr) * 2021-12-16 2023-06-22 Ofinno, Llc Économie d'énergie de réseau dans un système de communication sans fil

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2020146499A1 (fr) * 2019-01-08 2020-07-16 Hua Zhou Mécanisme d'économie d'énergie
WO2023091246A1 (fr) * 2021-11-18 2023-05-25 Qualcomm Incorporated Techniques pour configurer l'utilisation d'un mode d'économie d'énergie
WO2023087239A1 (fr) * 2021-11-19 2023-05-25 Zte Corporation Procédés, dispositifs et systèmes pour transmettre et recevoir un signal pour la gestion d'énergie
WO2023114493A1 (fr) * 2021-12-16 2023-06-22 Ofinno, Llc Économie d'énergie de réseau dans un système de communication sans fil

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