Methods for network energy saving in mobile communications
The implementation of UL WUS configurations in 5G NR networks allows base stations to conserve energy by entering a sleep state and resuming SIB1 transmissions only when necessary, addressing the high power consumption of SSB bursts and SIB1 transmissions.
Patent Information
- Application Number
- PCT/CN2025/073833
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-02-07
- Filing Date
- 2025-01-22
- Publication Date
- 2025-08-14
AI Technical Summary
In mobile communications, especially in 5G NR networks, SSB bursts and SIB1 transmissions consume significant power, particularly in empty load base stations, necessitating a solution to reduce network energy consumption.
Implementing an uplink wake-up signal (UL WUS) configuration that allows network nodes to enter a sleep state and resume SIB1 transmissions only when needed, based on UL WUS configurations received from user equipment (UE) or neighboring nodes.
Significantly reduces base station power consumption by enabling on-demand SIB1 transmissions, particularly in empty load scenarios, thereby enhancing network energy efficiency.
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Figure CN2025073833_14082025_PF_FP_ABST
Abstract
Description
METHODS FOR NETWORK ENERGY SAVING IN MOBILE COMMUNICATIONSCROSS REFERENCE TO RELATED PATENT APPLICATION (S)
[0001] The present disclosure is part of a non-provisional application claiming the priority benefit of U.S. Patent Application No. 63 / 550,665, filed 7 February 2024, the content of which herein being incorporated by reference in its entirety.TECHNICAL FIELD
[0002] The present disclosure is generally related to mobile communications and, more particularly, to network energy saving with respect to user equipment and network apparatus in mobile communications.BACKGROUND
[0003] Unless otherwise indicated herein, approaches described in this section are not prior art to the claims listed below and are not admitted as prior art by inclusion in this section.
[0004] In the current fifth generation (5G) new radio (NR) specification, synchronization signal and physical broadcast channel blocks (SSBs) are consistently configured as periodic signals by radio resource control (RRC) signaling. The specific SSB configuration details can be extracted from system information block 1 (SIB1) through its information elements (IEs) . One or more periodic SSBs can be grouped together to form an SSB burst in the time domain. Normally, the transmission periodicity of SSB burst is set as 20 milliseconds (ms) , and the transmission periodicity of SIB1 is set as 20, 40, 80, or 160 ms.
[0005] For an empty load base station (BS) , SSB bursts and SIB1 transmissions are the most power-consuming common signals / channels. SIB1 transmission, in particular, accounts for a significant portion of an empty load BS's power consumption. Therefore, a solution is needed to address this issue.SUMMARY
[0006] The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce concepts, highlights, benefits and advantages of the novel and non-obvious techniques described herein. Select implementations are further described below in the detailed description. Thus, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended for use in determining the scope of the claimed subject matter.
[0007] An objective of the present disclosure is to propose solutions or schemes that address the aforementioned issue pertaining to network energy saving with respect to UE and network apparatus in mobile communications.
[0008] In one aspect, a method may involve an apparatus receiving an uplink (UL) wake-up signal (WUS) configuration from a first network node. In which, the UL WUS configuration is associated with a second network node. The method may also involve the apparatus transmitting a WUS to the second network node based on the UL WUS configuration in an event that the apparatus moves to a cell of the second network node. The method may further involve the apparatus receiving a system information block 1 (SIB1) from the second network node.
[0009] In another aspect, a method may involve a network node entering a sleep state. The method may also involve the network node stopping a SIB1 transmission during the sleep state. The method may further involve the network node resuming the SIB1 transmission in an event that a WUS from a UE is received. In which, the WUS is associated with a UL WUS configuration provided by another network node.
[0010] In yet another aspect, a method may involve a network node determining at least one neighboring node in a sleep state. The method may further involve the network node transmitting a UL WUS configuration associated with the determined neighboring node (s) to a UE.
[0011] It is noteworthy that, although description provided herein may be in the context of certain radio access technologies, networks and network topologies such as LTE, LTE-Advanced, LTE-Advanced Pro, 5G, NR, 5G-Advanced, Internet-of-Things (IoT) , Narrow Band Internet of Things (NB-IoT) , Industrial Internet of Things (IIoT) , beyond 5G (B5G) , and 6th Generation (6G) , the proposed concepts, schemes and any variation (s) / derivative (s) thereof may be implemented in, for and by other types of radio access technologies, networks and network topologies. Thus, the scope of the present disclosure is not limited to the examples described herein.BRIEF DESCRIPTION OF THE DRAWINGS
[0012] The accompanying drawings are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of the present disclosure. The drawings illustrate implementations of the disclosure and, together with the description, serve to explain the principles of the disclosure. It is appreciable that the drawings are not necessarily in scale as some components may be shown to be out of proportion than the size in actual implementation in order to clearly illustrate the concept of the present disclosure.
[0013] FIG. 1 is a diagram depicting example scenarios of a communication environment in which various solutions and schemes in accordance with the present disclosure may be implemented.
[0014] FIG. 2 is a diagram depicting an example structure of uplink (UL) wake-up signal (WUS) configuration in accordance with the present disclosure may be implemented.
[0015] FIG. 3 is a diagram depicting another example structure of UL WUS configuration in accordance with the present disclosure may be implemented.
[0016] FIG. 4 is a block diagram of an example communication system in accordance with an implementation of the present disclosure.
[0017] FIG. 5 is a flowchart of an example process in accordance with an implementation of the present disclosure.
[0018] FIG. 6 is a flowchart of another example process in accordance with an implementation of the present disclosure.
[0019] FIG. 7 is a flowchart of yet another example process in accordance with an implementation of the present disclosure. DETAILED DESCRIPTION OF PREFERRED IMPLEMENTATIONS
[0020] Detailed embodiments and implementations of the claimed subject matters are disclosed herein. However, it shall be understood that the disclosed embodiments and implementations are merely illustrative of the claimed subject matters which may be embodied in various forms. The present disclosure may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments and implementations set forth herein. Rather, these exemplary embodiments and implementations are provided so that description of the present disclosure is thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art. In the description below, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations. Overview
[0021] Implementations in accordance with the present disclosure relate to various techniques, methods, schemes and / or solutions pertaining to network energy saving in mobile communications, which may provide network energy saving gain by supporting on-demand system information block 1 (SIB1) transmission. According to the present disclosure, a number of possible solutions may be implemented separately or jointly. That is, although these possible solutions may be described below separately, two or more of these possible solutions may be implemented in one combination or another.
[0022] FIG. 1 illustrates example scenarios 100a to 100c of a communication environment in which various solutions and schemes in accordance with the present disclosure may be implemented. In scenario 100a, a UE 110 is camping on a cell 120 of a base station (BS) 121 in a non-sleep state, and there is a BS 131 in a sleep state neighboring to the BS 121. The UE 110 may be a smart phone, a wearable device, an IoT device, and a tablet, etc. Alternatively, the UE 110 may be a notebook (NB) or personal computer (PC) inserted or installed with a data card which includes a modem and radio frequency (RF) transceiver (s) to provide the functionality of wireless communication. The BS 121 or 131 may be a next generation Node-B (gNB) of 5G New Radio (NR) network, however the present disclosure is not limited thereto. The BS 121 in the non-sleep state means that it may provide common signals / channels transmission (e.g., the periodic synchronization signal and physical broadcast channel block (SSB) burst and the system information block 1 (SIB1) ) to the UE 110. On the other hand, the BS 131 in the sleep state means that it does not provide the SIB1 transmission. In scenario 100a, the BS 121 may determine its neighboring node (s) which are in the sleep state based on network implementation / deployment and transmit (or broadcast) an uplink (UL) wake-up signal (WUS) configuration for the determined neighboring node (s) to the UE 110. For example, the UL WUS configuration 123 transmitted by the BS 121 to the UE 110 may be associated with the BS 131, and in one embodiment, the UL WUS configuration 123 may include a time domain resource and / or a frequency domain resource for transmitting a WUS by the UE 110. Further, the UL WUS configuration 123 may be transmitted or broadcasted by the BS 121 on a SIB, such as SIB1 or SIBx, where x is an integer larger than 1. In another embodiment, the BS 121 may further transmit identifier information associated with its neighboring nodes in sleep state to the UE 110. For example, the BS 121 may transmit a physical cell ID (PCI) of a cell 130 of the BS 131, which is in the sleep state, to the UE 110.
[0023] As shown in scenario 100b, when the UE 110 moves from the cell 120 to the cell 130, the UE 110 may transmit a WUS 113 to the BS 131 based on the time and / or frequency domain resource configured in the UL WUS configuration 123. Alternatively, when the UE 110 determines that no SIB1 transmission is received from the BS 131 through a blind detection process or an identifier information from the BS 121, or the UE 110 identifies that there is no SIB1 for the cell 130 which the UE 110 would like to connect to, the UE 110 may transmit the WUS 113 to the BS 131 based on the UL WUS configuration 123.
[0024] It should be noted that the BS 131 suspends SIB1 transmissions during its sleep state and relies on a WUS from UE to resumes SIB1 transmissions. Thus, after receiving the WUS 113 from the UE 110, as shown in scenario 100c, the BS 131 transits from the sleep state to the non-sleep state and start to transmit a SIB1 133 to the UE 110.
[0025] In one embodiment, the UL WUS configuration 123 provided by the BS 121 is only associated with the BS 131. That is, each neighboring BS in sleep state has its own unique UL WUS configuration. The BS 121 may broadcast or transmit the PCIs of its neighboring cells in sleep state along with the respective UL WUS configurations. In another embodiment, the UL WUS configuration 123 is associated with the BS 131 and at least another one BS in the sleep state neighboring to the BS 121. In one example, all neighboring BSs in sleep state adjacent to the BS 121 share the same UL WUS configuration, and only one copy of the UL WUS configuration would be broadcasted / transmitted by the BS 121. Alternatively, all neighboring BSs in sleep state adjacent to the BS 121 that operate on the identical frequency band share the same UL WUS configuration. The BS 121 would broadcast / transmit the frequencies and corresponding UL WUS configurations of its neighboring BSs.
[0026] In one embodiment, a structure of the UL WUS configuration may include a random access preamble (Msg1) based system information (SI) request structure. For example, the UL WUS configuration may include one or multiple of the information with the candidate values being a subset of the values listed in table 200 of FIG. 2. For example, the SI-RequestConfig including a list si-RequestResources may contain configuration for Msg1 based SI request without Msg1 repetition. The RACH-ConfigGeneric may be used to specify the random-access parameters both for regular random access as well as for beam failure recovery. The interpretation of each element in FIG. 2 may follow 5G NR TS 38.331 specification, however, the present disclosure is not limited thereto.
[0027] In another embodiment, the structure of the UL WUS configuration may include a random access channel structure. For example, the UL WUS configuration may include one or multiple of the information with the candidate values being a subset of the values listed in table 300 of FIG. 3. The RACH-ConfigCommon may be used to specify the cell specific random-access parameters, the interpretation of information listed in FIG. 3 may follow the 5G NR TS 38.331 specification, however the present disclosure is not limited thereto.
[0028] As the SIB1 transmissions occupy a large portion of BS power consumption, selectively transmitting SIB1 only when required by UEs may improve network energy efficiency. The following Tables 1 to 3 indicate the simulation results under system configurations of frequency range 1 (FR1) using a subcarrier spacing (SCS) of 30 kHz. Table 1. Network energy saving for on-demand SIB1 with 1 beam Table 2. Network energy saving for on-demand SIB1 with 4 beams Table 3. Network energy saving for on-demand SIB1 with 8 beams
[0029] As shown in Tables 1 to 3, on-demand SIB transmissions significantly reduce BS power consumption compared to periodic SIB transmissions, especially for empty load BSs. Moreover, a positive correlation exists between the number of transmitted beams and the degree of power savings achieved. Illustrative Implementations
[0030] FIG. 4 illustrates an example communication system 400 having at least an example communication apparatus 410 and two example network apparatuses 420 and 430 in accordance with an implementation of the present disclosure. Each of the communication apparatus 410, network apparatus 420 and network apparatus 430 may perform various functions to implement schemes, techniques, processes and methods described herein pertaining to network energy saving in mobile communications, including scenarios / schemes described above as well as process 500, process 600 and process 700 described below.
[0031] Communication apparatus 410 may be a part of an electronic apparatus, which may be a UE such as a portable or mobile apparatus, a wearable apparatus, a wireless communication apparatus or a computing apparatus. For instance, communication apparatus 410 may be implemented in a smartphone, a smartwatch, a personal digital assistant, a digital camera, or a computing equipment such as a tablet computer, a laptop computer or a notebook computer. Communication apparatus 410 may also be a part of a machine type apparatus, which may be an IoT, NB-IoT, or IIoT apparatus such as an immobile or a stationary apparatus, a home apparatus, a wire communication apparatus or a computing apparatus. For instance, communication apparatus 410 may be implemented in a smart thermostat, a smart fridge, a smart door lock, a wireless speaker or a home control center. Alternatively, communication apparatus 410 may be implemented in the form of one or more integrated-circuit (IC) chips such as, for example and without limitation, one or more single-core processors, one or more multi-core processors, one or more reduced-instruction set computing (RISC) processors, or one or more complex-instruction-set-computing (CISC) processors. Communication apparatus 410 may include at least some of those components shown in FIG. 4 such as a processor 412, for example. Communication apparatus 410 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and / or user interface device) , and, thus, such component (s) of communication apparatus 410 are neither shown in FIG. 4 nor described below in the interest of simplicity and brevity.
[0032] Each of the network apparatuses 420 and 430 may be a part of a network apparatus, which may be a network node such as a satellite, a base station, a small cell, a router or a gateway. For instance, network apparatus 420 and / or 430 may be implemented in an eNB in an LTE network, in a gNB in a 5G / NR, IoT, NB-IoT or IIoT network or in a satellite or base station in a 6G network. Each of the network apparatuses 420 and 430 may include at least some of those components shown in FIG. 4 such as a processor 422 and a processor 432, for example. Processor 422 / 432 may further include protocol stacks and a set of control functional modules and circuit. Each of the network apparatuses 420 and 430 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and / or user interface device) , and, thus, such component (s) are neither shown in FIG. 4 nor described below in the interest of simplicity and brevity.
[0033] In one aspect, each of the processor 412, processor 422 and processor 432 may be implemented in the form of one or more single-core processors, one or more multi-core processors, or one or more CISC processors. That is, even though a singular term “a processor” is used herein to refer to processor 412, processor 422 and processor 432, each of the processor 412, processor 422 and processor 432 may include multiple processors in some implementations and a single processor in other implementations in accordance with the present disclosure. In another aspect, each of the processor 412, processor 422 and processor 432 may be implemented in the form of hardware (and, optionally, firmware) with electronic components including, for example and without limitation, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors and / or one or more varactors that are configured and arranged to achieve specific purposes in accordance with the present disclosure. In other words, in at least some implementations, each of the processor 412, processor 422 and processor 432 is a special-purpose machine specifically designed, arranged and configured to perform specific tasks in a device (e.g., as represented by communication apparatus 410) and a network (e.g., as represented by network apparatuses 420 and 430) in accordance with various implementations of the present disclosure.
[0034] In some implementations, communication apparatus 410 may also include a transceiver 416 coupled to processor 412 and capable of wirelessly transmitting and receiving data. In some implementations, communication apparatus 410 may further include a memory 414 coupled to processor 412 and capable of being accessed by processor 412 and storing data therein.
[0035] In some implementations, each of the network apparatuses 420 and 430 may include a memory component and a transceiver. Memory 424 of network apparatus 420 and memory 434 of network apparatus 430 are coupled to their respective processors 422 and 432 and are used to store data. Communication apparatus 410 may communicate wirelessly with network apparatuses 420 and 430 via transceivers 416, 426, and 436, respectively.
[0036] For illustrative purposes and without limitation, descriptions of capabilities of the communication apparatus 410, network apparatus 420 and network apparatus 430 are provided below with process 500, process 600 and process 700. In which, communication apparatus 410 is implemented in or as a communication apparatus or a UE, and each of the network apparatuses 420 and 430 is implemented in or as a network node of a communication network (e.g., a base station) . Illustrative Processes
[0037] FIG. 5 illustrates an example process 500 in accordance with an implementation of the present disclosure. Process 500 may be an example implementation of above scenarios / schemes, whether partially or completely, with respect to network energy saving in mobile communications. Process 500 may represent an aspect of implementation of features of communication apparatus 410. Process 500 may include one or more operations, actions, or functions as illustrated by one or more of blocks 510, 520, and 530. Although illustrated as discrete blocks, various blocks of process 500 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of process 500 may be executed in the order shown in FIG. 5 or, alternatively, in a different order. Process 500 may be implemented by communication apparatus 410 or any suitable UE (e.g., the UE 110) or machine type devices. Solely for illustrative purposes and without limitation, process 500 is described below in the context of communication apparatus 410 as a UE. Process 500 may begin at block 510.
[0038] At block 510, process 500 may involve processor 412 of communication apparatus 410 receiving, via transceiver 416, an UL WUS configuration from a first network node (e.g., network apparatus 420 or the BS 121) . Specifically, the UL WUS configuration is associated with a second network node (e.g., network apparatus 430 or the BS 131) . Process 500 may proceed from block 510 to block 520.
[0039] At block 520, process 500 may involve processor 412 transmitting, via transceiver 416, a WUS to the second network node based on the UL WUS configuration in an event that communication apparatus 410 moves to a cell of the second network node. Process 500 may proceed from block 520 to block 530.
[0040] At block 530, process 500 may involve processor 412 receiving, via transceiver 416, a SIB1 from the second network node.
[0041] In some implementations, process 500 may further involve processor 412 receiving, via transceiver 416, an identifier information from the first network node about one or more network nodes.
[0042] In some implementations, the UL WUS configuration may include at least one of a time domain resource and a frequency domain resource for transmitting the WUS.
[0043] In some implementations, the UL WUS configuration is transmitted on a SIB by the first network node.
[0044] In some implementations, the UL WUS configuration is only associated with the second network node.
[0045] In some implementations, the UL WUS configuration is associated with the second network node and a third network node.
[0046] In some implementations, the second network node and the third network node are in an identical frequency band.
[0047] In some implementations, a structure of the UL WUS configuration may include a random access preamble based SI request structure or a random access channel structure.
[0048] In some implementations, process 500 may further involve processor 412 determining that no SIB1 transmission is received from a fourth network node through a blind detection process or an identifier information from the first network node. Also, process 500 may involve processor 412 transmitting, via transceiver 416, the WUS to the fourth network node based on the UL WUS configuration. Furthermore, process 500 may involve processor 412 receiving, via transceiver 416, the SIB1 from the fourth network node.
[0049] In some implementations, the first network node is in a non-sleep state and the second network node is in a sleep state when the apparatus receives the UL WUS configuration.
[0050] FIG. 6 illustrates another example process 600 in accordance with an implementation of the present disclosure. Process 600 may be an example implementation of above scenarios / schemes, whether partially or completely, with respect to network energy saving in mobile communications. Process 600 may represent an aspect of implementation of features of network apparatus 430 or any suitable network node (e.g., the BS 131) . Process 600 may include one or more operations, actions, or functions as illustrated by one or more of blocks 610, 620, and 630. Although illustrated as discrete blocks, various blocks of process 600 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of process 600 may be executed in the order shown in FIG. 6 or, alternatively, in a different order. Process 600 may begin at block 610.
[0051] At block 610, process 600 may involve processor 432 of network apparatus 430 entering a sleep state. Process 600 may proceed from block 610 to block 620.
[0052] At block 620, process 600 may involve processor 432 stopping a SIB1 transmission during the sleep state. Process 600 may proceed from block 620 to block 630.
[0053] At block 630, process 600 may involve processor 432 resuming the SIB1 transmission in an event that a WUS from a UE (e.g., communication apparatus 410 or the UE 110) is received via transceiver 436. To be specific, the WUS is associated with an UL WUS configuration provided by another network node (e.g., network apparatus 420 or the BS 121) .
[0054] In some implementations, the UL WUS configuration is associated with a single network node.
[0055] In some implementations, the UL WUS configuration is associated with multiple network nodes.
[0056] In some implementations, the UL WUS configuration is associated with multiple network nodes in an identical frequency band.
[0057] In some implementations, process 600 may involve processor 432 transiting from the sleep state to a non-sleep state in an event that the WUS is received.
[0058] FIG. 7 illustrates another example process 700 in accordance with an implementation of the present disclosure. Process 700 may be an example implementation of above scenarios / schemes, whether partially or completely, with respect to network energy saving in mobile communications. Process 700 may represent an aspect of implementation of features of network apparatus 420 or any suitable network node (e.g., the BS 121) . Process 700 may include one or more operations, actions, or functions as illustrated by one or more of blocks 710 and 720. Although illustrated as discrete blocks, various blocks of process 700 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of process 700 may be executed in the order shown in FIG. 7 or, alternatively, in a different order. Process 700 may begin at block 710.
[0059] At block 710, process 600 may involve processor 422 of network apparatus 420 determining at least one neighboring node in a sleep state (e.g., network apparatus 430 or the BS 131) . Process 700 may proceed from block 710 to block 720.
[0060] At block 720, process 600 may involve processor 422 transmitting, via transceiver 426, an UL WUS configuration associated with the at least one neighboring node to a UE (communication apparatus 410 or the UE 110) .
[0061] In some implementations, the neighboring node may include a first neighboring node and a second neighboring node. Process 600 may further involve processor 422 transmitting, via transceiver 426, an identical UL WUS configuration associated with both the first and second neighboring nodes to the UE.
[0062] In some implementations, process 600 may further involve processor 422 transmitting, via transceiver 426, the identical UL WUS configuration to the UE in an event that the first and second neighboring nodes are in an identical frequency band.
[0063] In some implementations, the neighboring node may include a first neighboring node and a second neighboring node. Process 600 may further involve processor 422 transmitting, via transceiver 426, a first UL WUS configuration only associated with the first neighboring node to the UE. Also, process 600 may further involve processor 422 transmitting, via transceiver 426, a second UL WUS configuration only associated with the second neighboring node to the UE.
[0064] In some implementations, process 600 may further involve processor 422 transmitting, via transceiver 426, identifier information of the neighboring node (s) to the UE.
[0065] In some implementations, the UL WUS configuration may include at least one of a time domain resource and a frequency domain resource for a WUS transmitted by the UE.
[0066] In some implementations, the UL WUS configuration is transmitted on a SIB.
[0067] In some implementations, a structure of the UL WUS configuration may include a random access preamble based SI request structure or a random access channel structure. Additional Notes
[0068] The herein-described subject matter sometimes illustrates different components contained within, or connected with, different other components. It is to be understood that such depicted architectures are merely examples, and that in fact many other architectures can be implemented which achieve the same functionality. In a conceptual sense, any arrangement of components to achieve the same functionality is effectively "associated" such that the desired functionality is achieved. Hence, any two components herein combined to achieve a particular functionality can be seen as "associated with" each other such that the desired functionality is achieved, irrespective of architectures or intermedial components. Likewise, any two components so associated can also be viewed as being "operably connected" , or "operably coupled" , to each other to achieve the desired functionality, and any two components capable of being so associated can also be viewed as being "operably couplable" , to each other to achieve the desired functionality. Specific examples of operably couplable include but are not limited to physically mateable and / or physically interacting components and / or wirelessly interactable and / or wirelessly interacting components and / or logically interacting and / or logically interactable components.
[0069] Further, with respect to the use of substantially any plural and / or singular terms herein, those having skill in the art can translate from the plural to the singular and / or from the singular to the plural as is appropriate to the context and / or application. The various singular / plural permutations may be expressly set forth herein for sake of clarity.
[0070] Moreover, it will be understood by those skilled in the art that, in general, terms used herein, and especially in the appended claims, e.g., bodies of the appended claims, are generally intended as “open” terms, e.g., the term “including” should be interpreted as “including but not limited to, ” the term “having” should be interpreted as “having at least, ” the term “includes” should be interpreted as “includes but is not limited to, ” etc. It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to implementations containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an, " e.g., “a” and / or “an” should be interpreted to mean “at least one” or “one or more; ” the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should be interpreted to mean at least the recited number, e.g., the bare recitation of "two recitations, " without other modifiers, means at least two recitations, or two or more recitations. Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc. ” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention, e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. In those instances where a convention analogous to “at least one of A, B, or C, etc. ” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention, e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. It will be further understood by those within the art that virtually any disjunctive word and / or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “A or B” will be understood to include the possibilities of “A” or “B” or “A and B. ”
[0071] From the foregoing, it will be appreciated that various implementations of the present disclosure have been described herein for purposes of illustration, and that various modifications may be made without departing from the scope and spirit of the present disclosure. Accordingly, the various implementations disclosed herein are not intended to be limiting, with the true scope and spirit being indicated by the following claims.
Claims
1.A method, comprising:receiving, by a processor of an apparatus, an uplink (UL) wake-up signal (WUS) configuration from a first network node, wherein the UL WUS configuration is associated with a second network node;transmitting, by the processor, a WUS to the second network node based on the UL WUS configuration in an event that the apparatus moves to a cell of the second network node; andreceiving, by the processor, a system information block 1 (SIB1) from the second network node.2.The method of Claim 1, further comprising:receiving, by the processor, an identifier information from the first network node about one or more network nodes.3.The method of Claim 1, wherein the UL WUS configuration comprises at least one of a time domain resource and a frequency domain resource for transmitting the WUS.4.The method of Claim 1, wherein the UL WUS configuration is transmitted on a SIB by the first network node.5.The method of Claim 1, wherein the UL WUS configuration is only associated with the second network node.6.The method of Claim 1, wherein the UL WUS configuration is associated with the second network node and a third network node.7.The method of Claim 6, wherein the second network node and the third network node are in an identical frequency band.8.The method of Claim 1, wherein a structure of the UL WUS configuration comprises a random access preamble based system information (SI) request structure or a random access channel structure.9.The method of Claim 1, further comprising:determining, by the processor, that no SIB1 transmission is received from a fourth network node through a blind detection process or an identifier information from the first network node;transmitting, by the processor, the WUS to the fourth network node based on the UL WUS configuration; andreceiving, by the processor, the SIB1 from the fourth network node.10.The method of Claim 1, wherein the first network node is in a non-sleep state and the second network node is in a sleep state in an event that the apparatus receives the UL WUS configuration.11.A method, comprising:entering, by a processor of a network node, a sleep state;stopping, by the processor, a system information block 1 (SIB1) transmission during the sleep state; andresuming, by the processor, the SIB1 transmission in an event that a wake-up signal (WUS) from a user equipment (UE) is received,wherein the WUS is associated with an uplink (UL) WUS configuration provided by another network node.12.The method of Claim 11, wherein:the UL WUS configuration is associated with a single network node; orthe UL WUS configuration is associated with a plurality of network nodes.13.The method of Claim 12, wherein the plurality of network nodes are in an identical frequency band.14.The method of Claim 11, further comprising:transiting, by the processor, from the sleep state to a non-sleep state in an event that the WUS is received.15.A method, comprising:determining, by a processor of a network node, at least one neighboring node in a sleep state; andtransmitting, by the processor, an uplink (UL) wake-up signal (WUS) configuration associated with the at least one neighboring node to a user equipment (UE) .16.The method of Claim 15, wherein the at least one neighboring node comprises a first neighboring node and a second neighboring node, and the transmitting of the UL WUS configuration further comprises:transmitting an identical UL WUS configuration associated with both of the first neighboring node and the second neighboring node to the UE.17.The method of Claim 16, wherein the transmitting of the identical UL WUS configuration further comprising:transmitting the identical UL WUS configuration to the UE in an event that the first neighboring node and the second neighboring node are in an identical frequency band.18.The method of Claim 15, wherein the at least one neighboring node comprises a first neighboring node and a second neighboring node, and the transmitting of the UL WUS configuration further comprises:transmitting a first UL WUS configuration associated with the first neighboring node to the UE; andtransmitting a second UL WUS configuration associated with the second neighboring node to the UE.19.The method of Claim 15, further comprising:transmitting, by the processor, an identifier information of the at least one neighboring node to the UE.20.The method of Claim 15, wherein:the UL WUS configuration comprises at least one of a time domain resource and a frequency domain resource for a WUS transmitted by the UE;the UL WUS configuration is transmitted on a SIB; ora structure of the UL WUS configuration comprises a random access preamble based system information (SI) request structure or a random access channel structure.
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