Method and device for indicating network energy-saving state

Abstract

A method performed by at least one processor in a user equipment (UE) includes receiving one or more resources from a base station operating in a non-energy saving mode. The method further includes receiving, from the base station, control information included in the downlink control channel, the control information indicating whether the base station is operating in the energy saving mode. The method also includes determining whether the base station is operating in a power saving mode based on the control information. The method also includes modifying reception of the one or more resources in response to determining that the base station is operating in the energy saving mode.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application is based upon and claims priority to U.S. patent application No. 63 / 393,455 filed on July 29, 2022, the disclosure of which is incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates generally to communication systems, and more particularly, to methods and apparatus for network energy saving status indication. Background Art

[0004] In previous specification versions (e.g., NR Rel-17), mechanisms for activating / deactivating capacity booster cells (e.g., TS28.310, TR 36.887, and TR 36.927) have been specified. However, these solutions are limited to cell activation / deactivation and do not provide a more dynamic way for the gNB to enter sleep mode to save power. Therefore, there is a need to leverage potential support / feedback from the UE, potential UE assistance information, and information exchange / coordination over the network interface to achieve more dynamic and / or semi-static more efficient operation and finer-grained adaptation of transmission and / or reception with one or more network energy saving techniques in the time, frequency, space, and power domains.

[0005] The improvements proposed in this article may also be applicable to other multiple access technologies, and to the telecommunication standards that employ these technologies. Summary of the invention

[0006] A brief summary of one or more embodiments of the present disclosure is given below in order to provide a basic understanding of such embodiments. This summary is not an extensive overview of all contemplated embodiments, and is not intended to identify key or critical elements of all embodiments, nor is it intended to delineate the scope of any or all embodiments. Its sole purpose is to present some concepts of one or more embodiments of the present disclosure in a simplified form as a prelude to a more detailed description presented later.

[0007] The present disclosure discloses a method, an apparatus, and a non-transitory computer-readable medium for network energy-saving status indication.

[0008] According to an exemplary embodiment, a method performed by at least one processor in a user equipment (UE) includes: receiving one or more resources from a base station operating in a non-energy-saving mode. The method also includes: receiving control information included in a downlink control channel from the base station, the control information indicating whether the base station is operating in an energy-saving mode. The method also includes: determining whether the base station is operating in an energy-saving mode based on the control information. The method also includes: in response to determining that the base station is operating in an energy-saving mode, modifying the reception of the one or more resources.

[0009] According to an exemplary embodiment, a user equipment (UE) includes: at least one memory configured to store computer program code; and at least one processor configured to access the at least one memory and operate as instructed by the computer program code. The computer program code includes: a first receiving code configured to cause at least one of the at least one processors to receive one or more resources from a base station operating in a non-energy-saving mode. The computer program code includes: a second receiving code configured to cause at least one of the at least one processors to receive control information included in a downlink control channel from the base station, the control information indicating whether the base station is operating in the energy-saving mode. The computer program code includes: a determination code configured to cause at least one of the at least one processors to determine whether the base station is operating in the energy-saving mode based on the control information. The computer program code includes: a modification code configured to cause at least one of the at least one processors to modify the reception of one or more resources in response to determining that the base station is operating in the energy-saving mode.

[0010] According to an exemplary embodiment, a non-transitory computer-readable medium has instructions stored therein, which, when executed by a processor, cause the processor to perform a method performed in a user equipment (UE). The method includes: receiving one or more resources from a base station operating in a non-energy-saving mode. The method also includes: receiving control information included in a downlink control channel from the base station, the control information indicating whether the base station is operating in an energy-saving mode. The method also includes: determining whether the base station is operating in an energy-saving mode based on the control information. The method also includes: in response to determining that the base station is operating in an energy-saving mode, modifying the reception of one or more resources.

[0011] Additional embodiments will be set forth in the description which follows and, in part, will be apparent from the description, and / or may be learned by practice of the presented embodiments of the disclosure. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The above and other aspects, features and aspects of embodiments of the present disclosure will be apparent from the following description in conjunction with the accompanying drawings, in which:

[0013] Figure 1 is a diagram of an example network device according to various embodiments of the present disclosure.

[0014] Figure 2 is a schematic diagram of an example wireless communication system according to various embodiments of the present disclosure.

[0015] Figure 3 is an example time series diagram according to various embodiments of the present disclosure.

[0016] Figure 4 is an example time series diagram according to various embodiments of the present disclosure.

[0017] Figure 5 is an example time series diagram according to various embodiments of the present disclosure.

[0018] Figure 6 A flow chart of an example network energy saving state indication process according to various embodiments of the present disclosure is illustrated.

[0019] Figure 7 A flow chart of an example network energy saving state indication process according to various embodiments of the present disclosure is illustrated. DETAILED DESCRIPTION

[0020] The following detailed description of example embodiments refers to the accompanying drawings.The same reference numbers in different drawings may represent the same or similar elements.

[0021] The foregoing disclosure provides explanation and description, but is not intended to elaborate on the implementation or limit the implementation to the disclosed precise form. In view of the above disclosure, modification and variation are possible or can be obtained from the practice of the implementation. In addition, one or more features or components of an embodiment can be incorporated into another embodiment (or one or more features of another embodiment) or combined with another embodiment (or one or more features of another embodiment). In addition, in the flow chart and the operation description provided below, it should be understood that one or more operations can be omitted, one or more operations can be added, one or more operations can be performed (at least in part) at the same time, and the order of one or more operations can be switched.

[0022] It will be apparent that the systems and / or methods described herein can be implemented in various forms of hardware, firmware, or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit the implementation. Therefore, the operation and behavior of the systems and / or methods are described herein without reference to specific software code - it should be understood that software and hardware can be designed to implement the systems and / or methods based on the description herein.

[0023] Although particular combinations of features are recited in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of possible implementations. In fact, many of these features may be combined in ways not explicitly recited in the claims and / or disclosed in the specification. Although each dependent claim listed below may directly depend on only one claim, the disclosure of possible implementations includes each dependent claim in combination with all other claims in the claim set.

[0024] Unless explicitly described, any element, action, or instruction used herein should not be interpreted as critical or essential. In addition, as used herein, the articles "a" and "an" are intended to include one or more items, and can be used interchangeably with "one or more". When only one item is intended, the term "one" or similar language is used. In addition, as used herein, the terms "has", "have", "having", "include", "including", etc. are intended to be open terms. In addition, unless otherwise explicitly stated, the phrase "based on" is intended to mean "based at least in part". In addition, expressions such as "at least one of [A] and [B]" or "at least one of [A] or [B]" should be understood to include only A, only B, or both A and B.

[0025] Throughout the specification, references to "one embodiment," "an embodiment," or similar language mean that a particular feature, structure, or characteristic described in connection with the indicated embodiment is included in at least one embodiment of the present solution. Thus, throughout the specification, the phrases "in one embodiment," "in an embodiment," and similar language may, but do not necessarily, all refer to the same embodiment.

[0026] In addition, the described features, advantages, and characteristics of the present disclosure may be combined in one or more embodiments in any suitable manner. Those skilled in the relevant art will recognize that, based on the description herein, the present disclosure may be practiced without one or more specific features or advantages of a particular embodiment. In other examples, it may be recognized in certain embodiments that additional features and advantages that are not present in all embodiments of the present disclosure may be present.

[0027] Embodiments of the present disclosure are intended to provide an indication that a gNB enters an energy-saving mode. Specifically, the gNB may enter one of various sleep modes (e.g., deep sleep, light sleep, etc.) at a given time. The gNB may also dynamically indicate the sleep mode to the UE. The indication enables the UE to understand the state of the operation of the gNB (e.g., a gNB operating in sleep mode) so that the UE does not monitor certain channels or signals when the gNB is operating in sleep mode. The indication may be provided to the UE in control information in a downlink control channel. Determining whether a base station is in one of multiple sleep modes may be based on one or more bits included in the control information, and the period in which the control information is received. Embodiments of the present disclosure achieve network energy saving, so that the operating costs and environmental impact of the network can be reduced.

[0028] Figure 1 1 is a diagram of an example device for performing PRACH detection. Device 100 may correspond to any type of known computer, server, or data processing device. For example, device 100 may include a processor, a personal computer (PC), a printed circuit board (PCB) including a computing device, a minicomputer, a mainframe computer, a microcomputer, a telephone computing device, a wired / wireless computing device (e.g., a smart phone, a personal digital assistant (PDA)), a laptop, a tablet computer, a smart device, or any other similarly functional device.

[0029] In some embodiments, Figure 1 As shown in , device 100 may include a set of components, such as a processor 120 , a memory 130 , a storage component 140 , an input component 150 , an output component 160 , and a communication interface 170 .

[0030] The bus 110 may include one or more components that allow communication between the components of the device 100. For example, the bus 110 may be a communication bus, a crossbar, a network, etc. Although the bus 110 may be Figure 1 Although depicted as a single line in FIG. 1 , bus 110 may be implemented using multiple (two or more) connections between the collection of components of device 100. The present disclosure is not limited in this regard.

[0031] Device 100 may include one or more processors, such as processor 120. Processor 120 may be implemented in hardware, firmware, and / or a combination of hardware and software. For example, processor 120 may include a central processing unit (CPU), a graphics processing unit (GPU), an accelerated processing unit (APU), a microprocessor, a microcontroller, a digital signal processor (DSP), a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a general purpose single-chip or multi-chip processor, or other programmable logic devices, discrete gate or transistor logic, discrete hardware components, or any combination designed to perform the functions described herein. A general purpose processor may be a microprocessor, or any conventional processor, controller, microcontroller, or state machine. Processor 120 may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, a plurality of microprocessors, a combination of one or more microprocessors and a DSP core, or any other such configuration. In some embodiments, specific processes and methods may be performed by a circuit system specific to a given function.

[0032] Processor 120 may control the overall operation of device 100 and / or a set of components of device 100 (eg, memory 130 , storage component 140 , input component 150 , output component 160 , communication interface 170 ).

[0033] Device 100 may also include memory 130. In some embodiments, memory 130 may include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), flash memory, magnetic memory, optical memory, and / or another type of dynamic or static storage device. Memory 130 may store information and / or instructions for use (e.g., execution) by processor 120.

[0034] The storage component 140 of the device 100 may store information and / or computer-readable instructions and / or code related to the operation and use of the device 100. For example, the storage component 140 may include a hard disk (e.g., a magnetic disk, an optical disk, a magneto-optical disk, and / or a solid-state disk), a compact disk (CD), a digital versatile disk (DVD), a universal serial bus (USB) flash drive, a Personal Computer Memory Card International Association (PCMCIA) card, a floppy disk, a cassette, a magnetic tape, and / or another type of non-transitory computer-readable medium, and a corresponding drive.

[0035] Device 100 may also include input component 150. Input component 150 may include one or more components that allow device 100 to receive information, such as via user input (e.g., a touch screen, keyboard, keypad, mouse, stylus, buttons, switches, microphone, camera, etc.). Alternatively or in addition, input component 150 may include a sensor for sensing information (e.g., a global positioning system (GPS) component, an accelerometer, a gyroscope, an actuator, etc.).

[0036] Output components 160 of device 100 may include one or more components (e.g., a display, a liquid crystal display (LCD), a light emitting diode (LED), an organic light emitting diode (OLED), a tactile feedback device, a speaker, etc.) that can provide output information from device 100.

[0037] The device 100 may also include a communication interface 170. The communication interface 170 may include a receiver component, a transmitter component and / or a transceiver component. The communication interface 170 may enable the device 100 to establish a connection and / or transmit communication with other devices (e.g., a server, another device). Communication may be achieved via a wired connection, a wireless connection, or a combination of a wired and wireless connection. The communication interface 170 may allow the device 100 to receive information from another device and / or provide information to another device. In some embodiments, the communication interface 170 may provide communication with another device via a network (such as a local area network (LAN), a wide area network (WAN), a metropolitan area network (MAN), a private network, a self-organizing network, an intranet, the Internet, a fiber-based network, a cellular network (e.g., a fifth generation (5G) network, a long-term evolution (LTE) network, a third generation (3G) network, a code division multiple access (CDMA) network, etc.), a public land mobile network (PLMN), a telephone network (e.g., a public switched telephone network (PSTN)), etc., and / or a combination of these or other types of networks). Alternatively or additionally, the communication interface 170 may provide communication with another device via a device-to-device (D2D) communication link such as FlashLinQ, WiMedia, Bluetooth, ZigBee, Wi-Fi, LTE, 5G, etc. In other embodiments, the communication interface 170 may include an Ethernet interface, a fiber optic interface, a coaxial interface, an infrared interface, a radio frequency (RF) interface, etc.

[0038] Device 100 may perform one or more processes described herein. Device 100 may perform operations based on processor 120 executing computer-readable instructions and / or code that may be stored by a non-transitory computer-readable medium, such as memory 130 and / or storage component 140. The computer-readable medium may refer to a non-transitory memory device. The memory device may include memory space within a single physical storage device and / or memory space distributed across multiple physical storage devices.

[0039] The computer-readable instructions and / or code may be read into memory 130 and / or storage component 140 from another computer-readable medium, or from another device via communication interface 170. The computer-readable instructions and / or code stored in memory 130 and / or storage component 140, if or when executed by processor 120, may cause device 100 to perform one or more processes described herein.

[0040] Alternatively or additionally, hardwired circuitry may be used in place of, or in combination with, software instructions to perform one or more processes described herein.Thus, the embodiments described herein are not limited to any specific combination of hardware circuitry and software.

[0041] Figure 1 The number and arrangement of components shown in the figure are provided as examples. In practice, there may be more than Figure 1 More components, fewer components, different components, or differently arranged components than those shown in . In addition, Figure 1 Two or more components shown in FIG. 1 may be implemented in a single component, or Figure 1 The single component shown in can be implemented as multiple distributed components. Additionally or alternatively, Figure 1 The component(s) shown in FIG. 1 may be executed by Figure 1 One or more functions performed by another component collection shown in .

[0042] Figure 2 2 is a diagram illustrating an example of a wireless communication system according to various embodiments of the present disclosure. The wireless communication system 200 (which may also be referred to as a wireless wide area network (WWAN)) may include one or more user equipments (UEs) 210, one or more base stations 220, at least one transport network 230, and at least one core network 240. Device 100 ( Figure 1 ) can be incorporated into UE 210 or base station 220.

[0043] One or more UEs 210 may access at least one core network 240 and / or IP services 250 via a connection to one or more base stations 220 on the RAN domain 224 and through at least one transport network 230. Examples of UE 210 may include a cellular phone, a smart phone, a Session Initiation Protocol (SIP) phone, a laptop, a personal digital assistant (PDA), a satellite radio, a global positioning system (GPS), a multimedia device, a video device, a digital audio player (e.g., an MP3 player), a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similarly functional device. Some of the one or more UEs 210 may be referred to as Internet of Things (IoT) devices (e.g., a parking meter, a gas pump, a toaster, a vehicle, a heart monitor, etc.). One or more UEs 210 may also be referred to as a station, a mobile station, a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communication device, a remote device, a mobile subscriber station, an access terminal, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile agent, a client, or some other suitable terminology.

[0044] The one or more base stations 220 may communicate wirelessly with the one or more UEs 210 via the RAN domain 224. Each of the one or more base stations 220 may provide communication coverage to one or more UEs 210 located within the geographic coverage area of ​​the base station 220. Figure 2 As shown in , the base station 220 may transmit one or more beamformed signals in one or more transmit directions to one or more UEs 210. The one or more UEs 210 may receive the beamformed signals in one or more receive directions from the base station 220. Alternatively or additionally, the one or more UEs 210 may transmit the beamformed signals in one or more transmit directions to the base station 220. The base station 220 may receive the beamformed signals in one or more receive directions from the one or more UEs 210.

[0045] One or more base stations 220 may include macro cells (e.g., high-power cellular base stations) and / or small cells (e.g., low-power cellular base stations). Small cells may include femto cells, pico cells, and micro cells. Base stations 220 (whether macro cells or macro cells) may include and / or be referred to as access points (APs), evolved (or evolved universal terrestrial radio access network (E-UTRAN)) Node Bs (eNBs), next generation Node Bs (gNBs), or any other type of base station known to those skilled in the art.

[0046] The one or more base stations 220 may be configured to interface (e.g., establish a connection, transmit data, etc.) with at least one core network 240 via at least one transport network 230. Among other functions, the one or more base stations 220 may perform one or more of the following functions: transmit data (e.g., uplink data) received from one or more UEs 210 to at least one core network 240 via at least one transport network 230; transmit data (e.g., downlink data) received from at least one core network 240 to one or more UEs 210 via at least one transport network 230.

[0047] The transport network 230 may transmit data (e.g., uplink data, downlink data) and / or signaling between the RAN domain 224 and the CN domain 244. For example, the transport network 230 may provide one or more backhaul links between one or more base stations 220 and at least one core network 240. These backhaul links may be wired or wireless.

[0048] The core network 240 may be configured to provide one or more services (e.g., enhanced mobile broadband (eMBB), ultra-reliable low-latency communication (URLLC), and massive machine type communication (mMTC), etc.) to one or more UEs 210 connected to the RAN domain 224 via the TN domain 234. Alternatively or additionally, the core network 240 may serve as an entry point for IP services 250. The IP services 250 may include the Internet, an intranet, an IP multimedia subsystem (IMS), streaming services (e.g., video, audio, games, etc.), and / or other IP services.

[0049] In some embodiments, a transmitter and / or receiver may be associated with at least one energy-saving state within a given time interval. The terms "power saving" and "energy saving" may be used interchangeably. An energy-saving mode may be defined by how much energy a node (a node may refer to a transmitter and / or a receiver) may consume in this state. An energy-saving mode may be defined by which parts of the baseband and RF components may be active and which parts of the baseband and RF components are in sleep mode when operating in an energy-saving mode. An energy-saving node may include multiple sleep modes.

[0050] Sleep mode may refer to a state in which at least some RF and / or baseband components may be deactivated. For example, one energy-saving state may be associated with a deep sleep mode, while another energy-saving mode may be associated with a micro sleep mode. In micro sleep, most RF and baseband components may be activated, and certain transmit / receive operations may be stopped (e.g., no downlink data transmission). In deep sleep mode, most RF and baseband components may be deactivated. In shallow sleep mode, most RF components may be deactivated. In some embodiments, there is a one-to-one mapping between energy-saving states and specific sleep modes.

[0051] In some embodiments, each sleep mode may be associated with certain transmission and / or reception characteristics. For example, in deep sleep mode, the gNB may not transmit certain channels and / or signals, such as synchronization signal blocks (SSBs), remaining minimum system information (RMSI), channel state information reference signals (CSI-RS), etc. For example, in light sleep mode, the gNB may transmit some common channels and signals, such as SSBs, with a reduced periodicity.

[0052] The transmission characteristics for the sleep mode may be known by the receiver, for example, through configuration, MAC CE, L1 signaling, or a combination. For example, for a given sleep mode, the UE may be provided with an indication of one or more of the following parameters as a configuration: {SSB on or SSB off; SSB with full period, or SSB with reduced period; RMSI on or RMSI off; low overhead SSB on or off, etc.}. In addition, the UE may be provided with an indication of the transmission parameters of the CSI-RS, including on or off, the number of SSBs sent in a burst and their indexes, etc.

[0053] The gNB may use L1 signaling (e.g., physical downlink control channel (PDCCH)) to dynamically indicate to the UE the upcoming (multiple) sleep modes, which may be valid for a duration. Therefore, at least one and / or a combination of the following embodiments may be used by the gNB and the UE.

[0054] In some embodiments, the energy saving mode information may be indicated in control information (e.g., downlink control information (DCI)). The DCI may be a scheduling DCI or a group common signaling DCI. The scheduling DCI may schedule data to and / or from the UE. The group common signaling DCI may not schedule data to and / or from the UE. At least one bit and / or code point in the DCI may be allocated and / or used for indication. For example, the gNB may use a single bit to indicate whether the upcoming sleep mode is a light sleep mode or a deep sleep mode:

[0055] Bit 0: gNB will enter light sleep mode

[0056] Bit 1: gNB will enter deep sleep mode

[0057] In some embodiments, there may be a delay between the time when the indication is received at the UE and the time when the indicated mode is applied and / or assumed to be applicable. For example, the indication may be received in slot n and the UE may assume that the gNB is in deep sleep mode starting in slot n+k, where both n and k may be integers. The UE may not expect transmission of certain channels and signals from the gNB starting in slot n+k.

[0058] The receiver may be configured with at least one search space to monitor the PDCCH to receive an indication. Monitoring may be performed in periodic monitoring occasions. In one example, the UE may be configured with two or more monitoring occasions with separate periods. These features may be achieved by configuring the UE with more than one search space and / or with a search space with multiple periods. The following examples use two search spaces, but the embodiments may be similarly applied to more general cases (e.g., three or more search spaces). In addition, the following examples use two sleep modes, but the disclosed embodiments are applicable to more general cases (e.g., three or more sleep modes). In some embodiments, there may be certain sleep modes that the gNB may not indicate to the UE. For example, the gNB may enter a micro sleep mode when there is no scheduled data to be sent and / or received.

[0059] In some embodiments, an indication received in a monitoring opportunity that may be monitored with a separate period may be associated with a separate sleep mode (e.g., the indication may be used to activate and / or deactivate those associated sleep modes) and may not be applicable to sleep modes associated with other monitoring opportunities. The UE may interpret the indication (e.g., bit and / or code point) based on the associated sleep mode. For example, an indication associated with a deep sleep mode may be sent every T1 ms (e.g., T1=100ms), and an indication associated with a shallow sleep mode may be sent every T2 ms (e.g., T2=20ms). As an example, a one-bit indication received in a monitoring opportunity with a T1 period may indicate (1: activate deep sleep, 0: deactivate deep sleep). In this regard, when the indicator is 1, the UE determines that the base station is in energy saving mode, and since the indicator is received within the T1 interval, the UE determines that the base station is entering deep sleep mode. In this same example, a one-bit indication received in a monitoring opportunity with a T2 period may indicate (1: activate shallow sleep, 0: deactivate shallow sleep).

[0060] Figure 3 An example timeline 300 is shown in which a base station is determined to be in one of a plurality of sleep modes based on a time of receipt of an indicator. Figure 3 In the embodiment of the present invention, the UE monitors the first search space with a period of 100ms and the second search space with a period of 20ms. At the monitoring opportunity of the 100ms period (e.g., at time 0ms), bit 1 is received, which indicates that the base station is in energy saving mode, and since bit 1 is received with a period of 100ms (e.g., 0ms, 100ms, 200ms, etc.), the deep sleep mode is determined to be active. Since the deep sleep mode is activated, the subsequent four monitoring opportunities with a period of 20ms are not monitored. In this regard, the subsequent monitoring opportunities of the second search space with the second period are skipped (e.g., not monitored). These monitoring opportunities can be associated with another sleep mode in multiple sleep modes, such as a shallow sleep mode.

[0061] In some embodiments, activation and / or deactivation of the search space may be triggered by the content of a PDCCH received in another search space. Alternatively or additionally, certain monitoring opportunities of the first search space may be activated and / or deactivated by the content of a PDCCH received in the same or second search space and having a different period from the first search space. For example, at time 100ms, the UE receives bit 0 indicating that deep sleep is not activated. Subsequently, the UE begins monitoring the PDCCH with a period of 20ms. The UE receiving bit 1 may indicate that the shallow sleep mode is activated for 20ms, and the UE receiving bit 0 may indicate that shallow sleep is not activated.

[0062] In some embodiments, if the monitoring opportunities associated with different sleep modes overlap in time (e.g., at 0ms, 100ms, 200ms), predefined rules for the interpretation of the indication may be used. The indication may be used for a sleep mode with a larger period, or a sleep mode with a larger power saving gain. For example, a bit 1 received at 100ms falls within both the T1 period (100ms) for the deep sleep mode and the T2 period (20ms) for the light sleep mode. Since the deep sleep mode has a larger period than the light sleep mode, the UE may determine based on the predefined rules that the base station is in the deep sleep mode, rather than the light sleep mode.

[0063] Sleep mode may also refer to discontinuous transmission (DTX). Multiple DTX cycles may be defined (e.g., a long DTX cycle with 100 ms, and a short DTX cycle with 20 ms). Each DTX cycle may imply certain transmission and reception operations. For example, in a long DTX cycle, the gNB may not be expected to send any channels and / or signals. The UE may not monitor any channels and / or attempt to receive any signals. For example, in a short DTX cycle, the gNB may be expected to send certain signals (such as CSI-RS), and the UE may be expected to receive those signals but not monitor any channels. If the long DTX cycle is activated, the short DTX cycle may not be expected to be activated. The DTX cycle may be expected to start only at certain time instances. The activation of the DTX cycle may be implemented using an indication in the PDCCH. In some embodiments, no more than one DTX cycle may be allowed to be active at a given time. The activation of the first DTX cycle may trigger the deactivation of the second DTX cycle for a specific duration.

[0064] In some embodiments, the UE may be configured with a search space, and the UE may monitor the monitoring occasion with a period corresponding to the search space. For example, the UE may monitor with a period of 20ms. At the monitoring occasion, if received, the DCI may indicate which sleep mode will be activated. In these embodiments, bits / code points may be mapped to specific sleep modes. In addition, the duration of each sleep mode may be configured. The mapping of the received bits / code points to the sleep mode and duration may be performed according to the following examples:

[0065] Example 1:

[0066] Bit 0: gNB will enter light sleep mode (duration 20ms)

[0067] Bit 1: gNB will enter deep sleep mode (duration 100ms)

[0068] Example 2:

[0069] Bit 00: gNB will enter light sleep mode (duration 20ms)

[0070] Bit 01: gNB will enter light sleep mode (duration 50ms)

[0071] Bit 10: gNB will enter deep sleep mode (duration 100ms)

[0072] Bit 11: gNB will enter deep sleep mode (duration 200ms)

[0073] In some embodiments, one set of bits may indicate a sleep mode, and another set of bits may indicate a duration. For example, with three bits, the first bit may indicate shallow sleep or deep sleep; and the remaining two bits may select a duration from four durations of the indicated sleep mode, as follows:

[0074] Bit: 000: Light sleep mode, 20ms

[0075] Bit: 010: Light sleep mode, 40ms

[0076] Bit: 100: Light sleep mode, 60ms

[0077] Bit: 110: Light sleep mode, 80ms

[0078] Bit: 001: Deep sleep mode, 100ms

[0079] Bit: 011: Deep sleep mode, 150ms

[0080] Bit: 101: Deep sleep mode, 200ms

[0081] Bit: 111: Deep sleep mode, 250ms

[0082] In this example, the least significant bit may be used to indicate the sleep mode. In another example, the most significant bit may be used to indicate the sleep mode.

[0083] In some embodiments, if the PDCCH is not detected in a monitoring opportunity, the UE behavior may be predefined or configured. The UE may assume that no sleep mode is indicated and may return to normal operation, or the UE may assume that one of the sleep modes is indicated (e.g., the last indicated mode). In some embodiments, a bit and / or code point may be allocated to normal operation (e.g., the bit / code point maps to normal operation without sleep mode). Normal operation may be a non-energy saving mode.

[0084] Figure 4 and 5 Example timelines 400 and 500 are illustrated respectively, where the monitoring period is, for example, 20 ms. Figure 4 In FIG. 1 , at time 0 ms, the light sleep mode is indicated for a duration of 20 ms. At time 60 ms, the deep sleep mode is indicated for a duration of 100 ms. Figure 5 In FIG. 1 , at time 60 ms, a shallow sleep mode is indicated for a duration of 40 ms, and at time 140 ms, a deep sleep mode of at least 80 ms is indicated. Figure 4 and Figure 5In the embodiment, when one of the sleep modes is indicated, the UE may not perform monitoring for the duration of the indicated sleep mode.

[0085] In some embodiments, when the UE is checking at a fixed period, the DTX period may be activated at certain discrete time instances. For example, one of at least two periods may be activated at a given time, and which period is activated may be indicated to the UE.

[0086] In some embodiments, the sleep mode can be indicated using an index to the sleep mode configuration, and how long the indicated configuration can be valid. The configuration can include at least one sleep mode and the duration of the sleep mode. For example, L represents a light sleep mode, D represents a deep sleep mode, and R represents a normal operating mode (e.g., a non-energy saving mode). In addition, the duration for the sleep mode can be 20ms for L and R, and 100ms for D. As an example, the DCI can use two bits to indicate one of the following indices, as follows:

[0087] Index 0: LLLDDLL

[0088] Index 1: DDLLLLL

[0089] Index 2: LLLLLLLLLLDD

[0090] Index 3: RRRRRDD

[0091] In the above example, the total duration of each configuration is 300ms. The UE may monitor the PDCCH at certain monitoring occasions to receive an index of one of the configurations. The indicated configuration may be activated after a fixed or predefined delay after the monitoring occasion. In some embodiments, the configuration of a particular mode may include a state and a duration. For example, modes L and M may represent "shallow sleep 20ms" and "shallow sleep 40ms", respectively. In some embodiments, the duration of each state may be indicated separately. For example, 8 bits may be used to indicate up to 256 configurations, including R, L, D, and 1 bit (2 bits) may be used to indicate up to 2 (4) possible durations of the state. For example, one of the following two combinations of durations may be indicated using 1 bit: Duration Set 1: {D: 100ms, L: 20ms, R: 20ms}; Duration Set 2: {D: 200ms, L: 40m, R: 20ms}.

[0092] In some embodiments, when an index is used to indicate a specific configuration, the type of DTX cycle (e.g., long cycle, short cycle), and the time interval of each cycle can be activated for a fixed or predefined duration and can be indicated to the UE. A common PDCCH (e.g., cell-common or UE-common) can be used.

[0093] In some embodiments, the sleep mode may include more modes besides "shallow sleep mode" and "deep sleep mode". For example, different common channels may carry different levels of energy, where the periods of subsets of these channels may be independently changed to save energy depending on the usage. In some embodiments, each mode may include one common channel, or a subset of common channels, or multiple common channels with corresponding periods. For example, multiple sleep modes (SMs) may be defined, as follows:

[0094] SM0: Bit 000: SSB has a period of 20ms

[0095] SM1: Bit 001: SSB has a period of 50ms

[0096] SM2: Bit 010: RMS-I has a period of 20ms

[0097] SM3: Bit 011: RMS-I has a period of 50ms

[0098] SM4: Bit 100: CSI-RS has a period of 20ms

[0099] SM5: Bit 101: CSI-RS has a period of 50ms

[0100] SM6: Bit 110: SSB and CSI-RS have a period of 20ms

[0101] SM7: Bit 111: SSB and CSI-RS have a period of 50ms

[0102] Figure 6 A flow chart of an embodiment of a network energy saving state indication process 600 performed at a UE is illustrated. The process may start from operation S602, where one or more resources from a base station (e.g., a gNB) are received. These resources may correspond to channels and / or signals that transmit information to the UE, such as SSB, RMSI, CSI-RS, etc. The process continues to operation S604, where information in a downlink control channel is received, including information about whether the base station is operating in an energy saving mode.

[0103] The process continues to operation S606, where it is determined whether the base station is operating in the energy saving mode based on the control information. For example, based on an indicator included in the control information, and a specific interval at which the indicator is received (e.g., Figure 3 ), determining whether the base station is operating in an energy saving mode (including one of a plurality of sleep modes). As another example, based on the presence of an indicator including one or more bits (e.g., Figure 4 and Figure 5 ), determine whether the base station is operating in a power saving mode (including one of multiple sleep modes).

[0104] The process continues to operation S608, where in response to determining that the base station is operating in an energy-saving mode, the UE modifies reception of one or more resources. For example, in response to determining that the base station is operating in one of a plurality of sleep modes for a specific duration, the UE may deactivate monitoring of one or more channels and / or signals during the specific duration. Process 600 may terminate after operation S608.

[0105] Figure 7 A flow chart of an embodiment of a network energy saving state indication process 700 performed at a base station (e.g., a gNB) is illustrated. The process may start with operation S702, where a base station operating in a non-energy saving mode sends one or more resources to one or more UEs. The one or more resources may correspond to the one or more resources described with respect to operation S602. The process proceeds to operation S704, where the base station sends control information to one or more UEs in a downlink control channel, the control information indicating that the base station is operating in an energy saving mode.

[0106] The process proceeds to operation S706, where the base station modifies the transmission of at least one of the one or more resources during the energy-saving mode. For example, during the energy-saving mode, the base station may deactivate the transmission of information on one or more channels. As another example, during the energy-saving mode, the base station may send information on one or more data channels with a reduced period. The process proceeds to operation S708, where after the energy-saving mode is terminated, the unmodified transmission of the one or more resources is resumed. For example, after the duration of the energy-saving mode is completed, the base station may reactivate any channels that have been deactivated, or resume the transmission of information performed at a regular period. Process 700 may terminate after operation S708.

[0107] The foregoing disclosure provides illustration and description, but is not intended to be exhaustive of the implementation or to limit the implementation to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the implementation.

[0108] It should be understood that the specific order or hierarchy of the blocks in the process / flowchart disclosed herein is an illustration of an example method. Based on design preferences, it should be understood that the specific order or hierarchy of the blocks in the process / flowchart can be rearranged. In addition, some blocks can be combined or omitted. The accompanying method claims present the elements of various blocks in an example order and are not meant to be limited to the specific order or hierarchy presented.

[0109] Some embodiments may involve systems, methods, and / or computer-readable media at any possible level of technical detail integration. In addition, one or more of the above components may be implemented as instructions stored on a computer-readable medium and executable by at least one processor (and / or may include at least one processor). The computer-readable medium may include a computer-readable non-transient storage medium (or medium) having computer-readable program instructions thereon for causing the processor to perform operations.

[0110] Computer readable storage medium can be a tangible device that can retain and store instructions for use by instruction execution devices. Computer readable storage medium can be, for example but not limited to, electronic storage device, magnetic storage device, optical storage device, electromagnetic storage device, semiconductor storage device, or any suitable combination of the above devices. A non-exhaustive list of more specific examples of computer readable storage medium includes the following: portable computer disk, hard disk, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), static random access memory (SRAM), portable compact disc read-only memory (CD-ROM), digital versatile disc (DVD), memory stick, floppy disk, mechanical encoding device (such as, a convex structure in a punch card or groove, on which instructions are recorded), and any suitable combination of the above. As used herein, computer readable storage medium should not be interpreted as a transient signal itself, such as a radio wave or other freely propagating electromagnetic wave, an electromagnetic wave propagated by a waveguide or other transmission medium (for example, a light pulse by a fiber optic cable), or an electrical signal sent by a wire.

[0111] The computer-readable program instructions described herein can be downloaded from a computer-readable storage medium to a corresponding computing / processing device, or downloaded to an external computer or external storage device via a network (e.g., the Internet, a local area network, a wide area network, and / or a wireless network). The network can include copper transmission cables, optical transmission fibers, wireless transmissions, routers, firewalls, switches, gateway computers, and / or edge servers. The network adapter card or network interface in each computing / processing device receives the computer-readable program instructions from the network and forwards the computer-readable program instructions to be stored in a computer-readable storage medium in the corresponding computing / processing device.

[0112] The computer readable program code / instruction for performing the operation can be an assembly instruction, an instruction set architecture (ISA) instruction, a machine instruction, a machine-related instruction, a microcode, a firmware instruction, a state setting data, a configuration data for an integrated circuit system, or a source code or object code written in any combination of one or more programming languages, including object-oriented programming languages, such as Smalltalk, C++, etc., and a process programming language, such as "C" programming language or similar programming language. The computer readable program instruction can be executed entirely on the user's computer, partially on the user's computer, executed as an independent software package, partially on the user's computer and partially on a remote computer, or completely on a remote computer or server. In the latter scenario, the remote computer can be connected to the user's computer through any type of network, including a local area network (LAN) or a wide area network (WAN), or can be connected to an external computer (for example, by using the Internet of an Internet service provider). In some embodiments, an electronic circuit including, for example, a programmable logic circuit system, a field programmable gate array (FPGA) or a programmable logic array (PLA) can execute computer readable program instructions by personalizing the electronic circuit system using the state information of the computer readable program instruction so as to perform aspects or operations.

[0113] These computer-readable program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device create components for implementing the functions / actions specified in the flowchart and / or one or more block diagram blocks. These computer-readable program instructions can also be stored in a computer-readable storage medium, which can instruct a computer, a programmable data processing device, and / or other equipment to operate in a particular manner, so that the computer-readable storage medium having the instructions stored therein includes a manufactured product, which includes instructions for implementing aspects of the functions / actions specified in the flowchart and / or one or more block diagram blocks.

[0114] Computer-readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other device to cause a series of operating steps to be performed on the computer, other programmable apparatus, or other device, thereby producing a computer-implemented process, so that the instructions executed on the computer, other programmable apparatus, or other device implement the functions / actions specified in the flowchart and / or one or more block diagram boxes.

[0115] The flow chart and block diagram in the figure show the architecture, function and operation of the possible implementation of the system, method and computer-readable medium according to various embodiments.In this respect, each frame in the flow chart or block diagram can represent a part of a module, segment or instruction, which includes one or more executable instructions for realizing (multiple) specified logical functions.Compared with those depicted in the figure, the method, computer system and computer-readable medium can include additional frames, less frames, different frames or frames of different arrangements.In some alternative implementations, the function pointed out in the frame may not occur in the order pointed out in the figure.For example, two frames shown continuously can actually be executed concurrently, or substantially concurrently, or frames can sometimes be executed in reverse order, depending on the function involved.It should also be noted that each frame in the block diagram and / or flow chart and the combination of frames in the block diagram and / or flow chart can be realized by a dedicated hardware system that performs a specified function or action, or performs a combination of dedicated hardware and computer instructions.

[0116] It will be apparent that the systems and / or methods described herein can be implemented in various forms of hardware, firmware, or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit the implementation. Therefore, the operation and behavior of the systems and / or methods are described herein without reference to specific software code - it should be understood that software and hardware can be designed to implement the systems and / or methods based on the description herein.

[0117] The above disclosure also covers the following embodiments:

[0118] (1) A method performed by at least one processor in a user equipment (UE), the method comprising: receiving one or more resources from a base station operating in a non-energy-saving mode; receiving control information included in a downlink control channel from the base station, the control information indicating whether the base station is operating in the energy-saving mode; determining whether the base station is operating in the energy-saving mode based on the control information; and modifying the reception of the one or more resources in response to determining that the base station is operating in the energy-saving mode.

[0119] (2) The method of feature (1), wherein modifying the reception of one or more resources comprises: (i) deactivating monitoring of at least one channel in which data or signaling information is sent from a base station to a UE; or (ii) receiving the one or more resources with a reduced period.

[0120] (3) The method of feature (2), wherein the energy saving mode includes multiple sleep modes, and the multiple sleep modes include at least a first sleep mode and a second sleep mode, wherein in response to determining that the base station is in the first sleep mode, modifying the reception of one or more resources includes: deactivating a larger number of channels, or receiving the one or more resources with a larger period reduction compared to the second sleep mode.

[0121] (4) The method of feature (3), wherein in response to determining that control information indicates that the energy saving mode is activated and the control information is received at a first time interval, the base station is determined to be operating in a first sleep mode; and wherein in response to determining that control information indicates that the energy saving mode is activated and the indication is received at a second time interval less than the first time interval, the base station is determined to be operating in a second sleep mode.

[0122] (5) The method according to feature (3) or (4), wherein in response to determining that the control information includes an indicator that the energy saving mode is active, the base station is determined to be operating in the energy saving mode.

[0123] (6) The method of feature (5), wherein the base station is determined to be operating in a non-energy saving mode in response to determining that the control information does not include the indicator.

[0124] (7) A method according to features (5) or (6), wherein the indicator includes one or more bits indicating: (i) one of a plurality of sleep modes, and (ii) a duration for which the energy saving mode remains active.

[0125] (8) A method according to feature (7), wherein the one or more bits of the indicator include: at least a first bit indicating one of a plurality of sleep modes, and at least a second bit indicating a duration for which the energy saving mode remains active.

[0126] (9) A method according to any one of features (3) to (8), wherein the control information specifies an index among a plurality of indexes, each index being associated with a separate configuration, the separate configuration indicating: a state of operation of the base station, and a duration of the state of operation of the base station, wherein the state of operation of the base station indicates: whether the base station is operating in one of a plurality of sleep modes, or in a non-energy saving mode.

[0127] (10) A method according to feature (9), wherein each configuration specifies multiple states of operation of the base station as a sequence.

[0128] (11) A method according to any one of features (2) to (10), wherein the control information specifies an operating mode among multiple operating modes, each mode specifies at least one signal among multiple signals and the duration of the operation, each signal carrying a different level of energy.

[0129] (12) A method according to any one of features (2) to (11), wherein the multiple signals include: a synchronization signal block (SSB), a remaining minimum system information (RMS-I), and a channel state information reference signal (CSI-RS).

[0130] (13) A user equipment (UE), comprising: at least one memory configured to store computer program code; and at least one processor configured to access the at least one memory and operate as instructed by the computer program code, the computer program code comprising: a first receiving code configured to cause at least one of the at least one processors to receive one or more resources from a base station operating in a non-energy-saving mode; a second receiving code configured to cause at least one of the at least one processors to receive control information included in a downlink control channel from the base station, the control information indicating whether the base station is operating in an energy-saving mode; a determining code configured to cause at least one of the at least one processors to determine whether the base station is operating in an energy-saving mode based on controlling the information; and a modifying code configured to cause at least one of the at least one processors to modify the reception of one or more resources in response to determining that the base station is operating in an energy-saving mode.

[0131] (14) A UE according to feature (13), wherein the modification code is also configured to cause at least one of the at least one processor to: (i) deactivate monitoring of at least one channel in which data or signaling information is sent from a base station to the UE; or (ii) receive the one or more resources with a reduced periodicity.

[0132] (15) A UE according to feature (14), wherein the energy saving mode includes multiple sleep modes, the multiple sleep modes include at least a first sleep mode and a second sleep mode, wherein in response to a determination that the base station is in the first sleep mode, the modification code is also configured to cause at least one of the at least one processors to: deactivate a larger number of channels, or receive the one or more resources with a larger period reduction compared to the second sleep mode.

[0133] (16) A UE of feature (15), wherein the base station responds to a control information indication that the energy saving mode is active by being determined to be operating in a first sleep mode, and the control information is received at a first time interval, and wherein the base station responds to the control information indication that the energy saving mode is active by being determined to be operating in a second sleep mode, and the indication is received at a second time interval less than the first time interval.

[0134] (17) The UE of feature (15) or (16), wherein the base station is determined to be operating in the energy saving mode in response to a determination that the control information includes an indicator that the energy saving mode is active.

[0135] (18) The UE of feature (17), wherein the base station is determined to be operating in a non-energy saving mode in response to determining that the control information does not include an indicator.

[0136] (19) The UE of feature (17) or (18), wherein the indicator comprises one or more bits indicating: (i) one of a plurality of sleep modes, and (ii) a duration for which the energy saving mode remains active.

[0137] (20) A non-transitory computer-readable medium having instructions stored therein, which, when executed by a processor, cause the processor to perform a method executed in a user equipment (UE), the method comprising: receiving one or more resources from a base station operating in a non-energy-saving mode; receiving control information included in a downlink control channel from the base station, the control information indicating whether the base station is operating in an energy-saving mode; determining whether the base station is operating in an energy-saving mode based on the control information; and modifying the reception of one or more resources in response to determining that the base station is operating in an energy-saving mode.

Claims

1. A method performed by at least one processor in a user equipment (UE), the method comprising: receiving one or more resources from a base station operating in a non-energy saving mode; receiving control information included in a downlink control channel from the base station, the control information indicating whether the base station is operating in an energy saving mode; determining, based on the control information, whether the base station is operating in the energy-saving mode; as well as In response to determining that the base station is operating in the energy conservation mode, the receiving of the one or more resources is modified.

2. The method of claim 1 , wherein modifying the receiving of the one or more resources comprises: (i) deactivating monitoring of at least one channel in which data or signaling information is sent from the base station to the UE; or (ii) receiving the one or more resources with a reduced periodicity.

3. The method according to claim 2, The energy-saving mode includes a plurality of sleep modes, and the plurality of sleep modes include at least a first sleep mode and a second sleep mode. In response to determining that the base station is in the first sleep mode, modifying the receiving of the one or more resources comprises: Compared to the second sleep mode, a greater number of channels are deactivated or the one or more resources are received with a greater periodicity reduction.

4. The method according to claim 3, wherein in response to determining that the control information indicates that the energy saving mode is activated, and the control information is received at a first time interval, the base station is determined to be operating in the first sleep mode, and In response to determining that the control information indicates that the energy saving mode is activated, and the indication is received at a second time interval that is less than the first time interval, the base station is determined to be operating in the second sleep mode.

5. The method according to claim 3, Wherein in response to determining that the control information includes an indicator that the energy saving mode is active, the base station is determined to be operating in the energy saving mode.

6. The method according to claim 5, In response to determining that the control information does not include the indicator, the base station is determined to be operating in the non-energy saving mode.

7. The method according to claim 5, The indicator comprises one or more bits indicating: (i) one of the plurality of sleep modes, and (ii) a duration for which the energy saving mode remains active.

8. The method according to claim 7, The one or more bits of the indicator include: At least a first bit indicating the one of the plurality of sleep modes, and at least a second bit indicating the duration for which the energy saving mode remains active.

9. The method according to claim 3, wherein the control information specifies one of a plurality of indices, each index being associated with a separate configuration, the separate configuration indicating: a state of operation of the base station, and a duration of the state of operation of the base station, The state of the operation of the base station indicates whether the base station is operating in one of the plurality of sleep modes or in the non-energy saving mode.

10. The method of claim 9, wherein each configuration specifies a plurality of states of operation of the base station as a sequence.

11. The method of claim 2, wherein the control information specifies one of a plurality of operating modes, each mode specifying at least one of a plurality of signals and a duration of operation, each signal carrying a different level of energy.

12. The method according to claim 2, The plurality of signals include: Synchronization Signal Block (SSB), Remaining Minimum System Information (RMS-I), and Channel State Information Reference Signal (CSI-RS).

13. A user equipment (UE), comprising: at least one memory configured to store computer program code; as well as at least one processor configured to access the at least one memory and to operate as instructed by the computer program code, the computer program code comprising: A first receiving code configured to cause at least one of the at least one processor to: receive one or more resources from a base station operating in a non-power saving mode; A second receiving code is configured to cause at least one of the at least one processor to: receive control information included in a downlink control channel from the base station, the control information indicating: whether the base station is operating in an energy-saving mode; a determination code configured to cause at least one of the at least one processor to: determine whether the base station is operating in the energy saving mode based on the control information, and Modification code is configured to cause at least one of the at least one processor to: in response to determining that the base station is operating in the energy saving mode, modify the receiving of the one or more resources.

14. The UE of claim 13, wherein the modification code is further configured to cause at least one of the at least one processor to: (i) deactivate monitoring of at least one channel in which data or signaling information is sent from the base station to the UE; or (ii) receive the one or more resources with a reduced periodicity.

15. The UE according to claim 14, The energy-saving mode includes a plurality of sleep modes, and the plurality of sleep modes include at least a first sleep mode and a second sleep mode. In response to determining that the base station is in the first sleep mode, the modification code is also configured to cause at least one of the at least one processor to: deactivate a larger number of channels, or receive the one or more resources with a larger period reduction compared to the second sleep mode.

16. The UE according to claim 15, wherein in response to determining that the control information indicates that the energy saving mode is activated, and the control information is received at first time intervals, the base station is determined to be operating in the first sleep mode; and In response to determining that the control information indicates that the energy saving mode is activated, and the indication is received at a second time interval that is less than the first time interval, the base station is determined to be operating in the second sleep mode.

17. The UE according to claim 15, Wherein in response to determining that the control information includes an indicator that the energy saving mode is active, the base station is determined to be operating in the energy saving mode.

18. The UE according to claim 17, In response to determining that the control information does not include the indicator, the base station is determined to be operating in the non-energy saving mode.

19. The UE according to claim 17, The indicator comprises one or more bits indicating: (i) one of the plurality of sleep modes, and (ii) a duration for which the energy saving mode remains active.

20. A non-transitory computer readable medium having instructions stored therein, which, when executed by a processor, cause the processor to perform a method performed in a user equipment (UE), the method comprising: receiving one or more resources from a base station operating in a non-energy saving mode; receiving control information included in a downlink control channel from the base station, the control information indicating whether the base station is operating in an energy saving mode; determining, based on the control information, whether the base station is operating in the energy-saving mode; as well as In response to determining that the base station is operating in the energy conservation mode, the receiving of the one or more resources is modified.

Images