Beam-level on demand (OD) -system information transmision
By allowing terminal devices to indicate multiple beam requests, the solution improves on-demand system information transmission reliability for mobile devices, maintaining network energy savings and ensuring successful reception, even when devices move out of coverage areas.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- NOKIA SOLUTIONS (SHANGHAI) CO LTD
- Filing Date
- 2024-11-15
- Publication Date
- 2026-05-21
AI Technical Summary
Existing communication systems face challenges in ensuring reliable on-demand system information transmission, particularly for mobile devices, as they may move out of the coverage area of the requested beam, leading to unsuccessful reception of system information, which compromises network energy savings.
A terminal device provides assistance information indicating whether more than one beam is requested for on-demand system information transmission, allowing the network device to transmit system information via multiple beams, thereby improving reception success rates without compromising network energy savings.
Enhances the success rate of on-demand system information reception for mobile devices by adapting beam selection based on mobility status, ensuring reliable communication while maintaining network energy efficiency.
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Figure CN2024132503_21052026_PF_FP_ABST
Abstract
Description
BEAM-LEVEL ON DEMAND (OD) -SYSTEM INFORMATION TRANSMISIONFIELD
[0001] Various example embodiments relate to the field of communications and in particular, to devices, methods, apparatuses and a computer readable storage medium for beam-level on demand (OD) -system information transmission.BACKGROUND
[0002] A communication network can be seen as a facility that enables communications between two or more communication devices, or provides communication devices access to a data network. A mobile or wireless communication network is one example of a communication network.
[0003] Such communication networks operate in accordance with standards, such as those promulgated by 3GPP (Third Generation Partnership Project) or ETSI (European Telecommunications Standards Institute) . Examples of such standards include the so-called 5G (5th Generation) standard or other standards promulgated by 3GPP.SUMMARY
[0004] In general, example embodiments of the present disclosure provide a solution for the beam-level on demand (OD) system information transmission.
[0005] In a first aspect, there is provided a terminal device. The terminal device comprises at least one processor and at least one memory including computer program codes. The at least one memory and the computer program codes are configured to, with the at least one processor, cause the terminal device to transmit, to a network device, a signal using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information. The terminal device is further caused to receive, from the network device, the OD-system information via one or more beams associated with the set of resources.
[0006] In a second aspect, there is provided a network device. The network device comprises at least one processor and at least one memory including computer program codes. The at least one memory and the computer program codes are configured to, with the at least one processor, cause the network device to receive, from a terminal device, a signal using a set of resources which indicates whether more than one beam is requested for OD-system information. The network device is further caused to transmit, to the terminal device, the OD-system information via one or more beams associated with the set of resources.
[0007] In a third aspect, there is provided a network device. The network device comprises at least one processor and at least one memory including computer program codes. The at least one memory and the computer program codes are configured to, with the at least one processor, cause the network device to transmit, to a terminal device, a wake up signal (WUS) configuration. The WUS configuration carries information on multiple sets of resources for transmitting a signal, and each of the multiple sets of resources is associated with one or more beams.
[0008] In a fourth aspect, there is provided a terminal device. The terminal device comprises at least one processor and at least one memory including computer program codes. The at least one memory and the computer program codes are configured to, with the at least one processor, cause the terminal device to transmit, to a network device, a signal within an operating frequency range. The terminal device is further caused to receive, from the network device, a control channel for OD-system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0009] In a fifth aspect, there is provided a network device. The network device comprises at least one processor and at least one memory including computer program codes. The at least one memory and the computer program codes are configured to, with the at least one processor, cause the network device to receive, from a terminal device, a signal within an operating frequency range. The network device is further caused to transmit, to the terminal device, a control channel for OD-system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0010] In a sixth aspect, there is provided a method implemented at a terminal device. The method comprises: transmitting, to a network device, a signal using a set of resources which indicates whether more than one beam is requested for OD-system information. The method further comprises: receiving, from the network device, the OD-system information via one or more beams associated with the set of resources.
[0011] In a seventh aspect, there is provided a method implemented at a network device. The method comprises: receiving, from a terminal device, a signal using a set of resources which indicates whether more than one beam is requested for OD-system information. The method further comprises: transmitting, to the terminal device, the OD-system information via one or more beams associated with the set of resources.
[0012] In an eighth aspect, there is provided a method implemented at a network device. The method comprises: transmitting, to a terminal device, a wake up signal (WUS) configuration. The WUS configuration carries information on multiple sets of resources for transmitting a signal, and a set of resources of the multiple sets of resources is associated with one or more beams.
[0013] In a ninth aspect, there is provided a method implemented at a terminal device. The method comprises: transmitting, to a network device, a signal within an operating frequency range. The method further comprises: receiving, from the network device, a control channel for OD-system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0014] In a tenth aspect, there is provided a method implemented at a network device. The network device comprises: receiving, from a terminal device, a signal within an operating frequency range. The method further comprises: transmitting, to the terminal device, a control channel for on-demand (OD) -system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0015] In an eleventh aspect, there is provided an apparatus comprising means for transmitting, to a network device, a signal using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information; and means for receiving, from the network device, the OD-system information via one or more beams associated with the set of resources.
[0016] In twelfth aspect, there is provided an apparatus comprising means for receiving, from a terminal device, a signal or channel using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information; and means for transmitting, to the terminal device, the OD-system information via one or more beams associated with the set of resources.
[0017] In thirteenth aspect, there is provided an apparatus comprising means for transmitting, to a terminal device, a wake up signal (WUS) configuration, wherein the WUS configuration carries information on multiple sets of resources for transmitting a signal, and a set of resources of the multiple sets of resources is associated with one or more beams.
[0018] In a fourteenth aspect, there is provided an apparatus comprising means for transmitting, to a network device, a signal in an operating frequency range; and means for receiving, from the network device, a control channel transmission for on-demand (OD) -system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0019] In a fifteenth aspect, there is provided an apparatus comprising means for means for receiving, by a network device from a terminal device, a signal within an operating frequency range; and means for transmitting, to the terminal device, a control channel for on-demand (OD) -system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0020] In a sixteenth aspect, there is provided a non-transitory computer readable medium comprising program instructions for causing an apparatus to perform at least the method according to any one of the above sixth to tenth aspects.
[0021] In a seventeenth aspect, there is provided a computer program comprising instructions, which, when executed by an apparatus, cause the apparatus at least to: transmit, to a network device, a signal using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information. The apparatus is further caused to receive, from the network device, the OD-system information via one or more beams associated with the set of resources.
[0022] In an eighteenth aspect, there is provided a computer program comprising instructions, which, when executed by an apparatus, cause the apparatus at least to: receive, from a terminal device, a signal using a set of resources which indicates whether more than one beam is requested for OD-system information. The apparatus is further caused to transmit, to the terminal device, the OD-system information via one or more beams associated with the set of resources.
[0023] In a nineteenth aspect, there is provided a computer program comprising instructions, which, when executed by an apparatus, cause the apparatus at least to: transmit, to a terminal device, a wake up signal (WUS) configuration. The WUS configuration carries information on multiple sets of resources for transmitting a signal, and each of the multiple sets of resources is associated with one or more beams.
[0024] In a twentieth aspect, there is provided a computer program comprising instructions, which, when executed by an apparatus, cause the apparatus at least to: transmit, to a network device, a signal within an operating frequency range. The apparatus is further caused to receive, from the network device, a control channel for OD-system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0025] In a twenty first aspect, there is provided a computer program comprising instructions, which, when executed by an apparatus, cause the apparatus at least to: receive, from a terminal device, a signal within an operating frequency range. The apparatus is further caused to transmit, to the terminal device, a control channel for OD-system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0026] In a twenty second aspect, there is provided a terminal device. The terminal device comprises transmitting circuitry configured to transmit, to a network device, a signal using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information; and receiving circuitry configured to receive, from the network device, the OD-system information via one or more beams associated with the set of resources.
[0027] In a twenty third aspect, there is provided a network device. The network device comprises receiving circuitry configured to receive, from a terminal device, a signal using a set of resources which indicates whether more than one beam is requested for OD-system information; and transmitting circuitry configured to transmit, to the terminal device, the OD-system information via one or more beams associated with the set of resources.
[0028] In a twenty fourth aspect, there is provided a network device. The network device comprises transmitting circuitry configured to transmit, to a terminal device, a wake up signal (WUS) configuration. The WUS configuration carries information on multiple sets of resources for transmitting a signal, and each of the multiple sets of resources is associated with one or more beams.
[0029] In a twenty fifth aspect, there is provided a terminal device. The terminal device comprises transmitting circuitry configured to transmit, to a network device, a signal within an operating frequency range; and receiving circuitry configured to receive, from the network device, a control channel for OD-system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0030] In a twenty sixth aspect, there is provided a terminal device. The terminal device comprises receiving circuitry configured to receive, from a terminal device, a signal within an operating frequency range; and transmitting circuitry configured to transmit, to the terminal device, a control channel for OD-system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0031] It is to be understood that the summary section is not intended to identify key or essential features of embodiments of the present disclosure, nor is it intended to be used to limit the scope of the present disclosure. Other features of the present disclosure will become easily comprehensible through the following description.BRIEF DESCRIPTION OF THE DRAWINGS
[0032] Some example embodiments will now be described with reference to the accompanying drawings, in which:
[0033] FIG. 1A illustrates an example communication network in which embodiments of the present disclosure may be implemented;
[0034] FIG. 1B illustrates an example of OD-system information block (SIB) 1 transmission in the case that a terminal device is at moving status and the timing of a random access response (RAR) reception window and an SIB reception window;
[0035] FIG. 2 illustrates an example signaling process for the beam-level on demand (OD) system information transmission according to example embodiments of the present disclosure;
[0036] FIG. 3 illustrates another example signaling process for the beam-level on demand (OD) system information transmission according to example embodiments of the present disclosure;
[0037] FIG. 4 illustrates a flowchart of a method implemented at a terminal device according to some embodiments of the present disclosure;
[0038] FIG. 5 illustrates a flowchart of a method implemented at a network device according to some embodiments of the present disclosure;
[0039] FIG. 6 illustrates a flowchart of a method implemented at a network device according to some embodiments of the present disclosure;
[0040] FIG. 7 illustrates a flowchart of a method implemented at a terminal device according to some embodiments of the present disclosure;
[0041] FIG. 8 illustrates a flowchart of a method implemented at a network device according to some embodiments of the present disclosure;
[0042] FIG. 9 illustrates a simplified block diagram of an apparatus that is suitable for implementing embodiments of the present disclosure; and
[0043] FIG. 10 illustrates a block diagram of an example computer readable medium in accordance with some embodiments of the present disclosure.
[0044] Throughout the drawings, the same or similar reference numerals represent the same or similar element.DETAILED DESCRIPTION
[0045] Principles of the present disclosure will now be described with reference to some example embodiments. It is to be understood that these embodiments are described only for the purpose of illustration and help those skilled in the art to understand and implement the present disclosure, without suggesting any limitation as to the scope of the disclosure. The disclosure described herein can be implemented in various manners other than the ones described below.
[0046] In the following description and claims, unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skills in the art to which this disclosure belongs.
[0047] References in the present disclosure to “one embodiment, ” “an embodiment, ” “an example embodiment, ” and the like indicate that the embodiment described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases are not necessarily referring to the same embodiment. Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
[0048] It shall be understood that although the terms “first” and “second” etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and similarly, a second element could be termed a first element, without departing from the scope of example embodiments. As used herein, the term “and / or” includes any and all combinations of one or more of the listed terms.
[0049] The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments. As used herein, the singular forms “a” , “an” and “the” are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms “comprises” , “comprising” , “has” , “having” , “includes” and / or “including” , when used herein, specify the presence of stated features, elements, and / or components etc., but do not preclude the presence or addition of one or more other features, elements, components and / or combinations thereof. As used herein, “at least one of the following: <a list of two or more elements>” and “at least one of <a list of two or more elements>” and similar wording, where the list of two or more elements are joined by “and” or “or” , mean at least any one of the elements, or at least any two or more of the elements, or at least all the elements.
[0050] As used in this application, the term “circuitry” may refer to one or more or all of the following: (a) hardware-only circuit implementations (such as implementations in only analog and / or digital circuitry) and (b) combinations of hardware circuits and software, such as (as applicable) : (i) a combination of analog and / or digital hardware circuit (s) with software / firmware and (ii) any portions of hardware processor (s) with software (including digital signal processor (s) ) , software, and memory (ies) that work together to cause an apparatus, such as a mobile phone or server, to perform various functions) and (c) hardware circuit (s) and or processor (s) , such as a microprocessor (s) or a portion of a microprocessor (s) , that requires software (e.g., firmware) for operation, but the software may not be present when it is not needed for operation.
[0051] This definition of circuitry applies to all uses of this term in this application, including in any claims. As a further example, as used in this application, the term circuitry also covers an implementation of merely a hardware circuit or processor (or multiple processors) or portion of a hardware circuit or processor and its (or their) accompanying software and / or firmware. The term circuitry also covers, for example and if applicable to the particular claim element, a baseband integrated circuit or processor integrated circuit for a mobile device or a similar integrated circuit in server, a cellular network device, or other computing or network device.
[0052] As used herein, the term “communication network” refers to a network following any suitable communication standards, such as 5G New Radio (NR) , Long Term Evolution (LTE) , LTE-Advanced (LTE-A) , Wideband Code Division Multiple Access (WCDMA) , High-Speed Packet Access (HSPA) , Narrow Band Internet of Things (NB-IoT) and so on. Furthermore, the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the future fifth generation (5G) communication protocols, and / or any other protocols either currently known or to be developed in the future. Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will of course also be future type communication technologies and systems with which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned systems.
[0053] As used herein, the term “network device” refers to a node in a communication network via which a terminal device accesses the network and receives services therefrom. The network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a NR NB (also referred to as a gNB, a base station of a 5G system) , a Remote Radio Unit (RRU) , a radio header (RH) , a remote radio head (RRH) , a relay, a low power node such as a femto, a pico, and so forth, depending on the applied terminology and technology.
[0054] The term “terminal device” refers to any end device that may be capable of wireless communication. By way of example rather than limitation, a terminal device may also be referred to as a communication device, user equipment (UE) , a Subscriber Station (SS) , a Portable Subscriber Station, a Mobile Station (MS) , or an Access Terminal (AT) . The terminal device may include, but not limited to, a mobile phone, a cellular phone, a smart phone, voice over IP (VoIP) phones, wireless local loop phones, a tablet, a wearable terminal device, a personal digital assistant (PDA) , portable computers, desktop computer, image capture terminal devices such as digital cameras, gaming terminal devices, music storage and playback appliances, vehicle-mounted wireless terminal devices, wireless endpoints, mobile stations, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , USB dongles, smart devices, wireless customer-premises equipment (CPE) , an Internet of Things (loT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device and applications (e.g., remote surgery) , an industrial device and applications (e.g., a robot and / or other wireless devices operating in an industrial and / or an automated processing chain contexts) , a consumer electronics device, a device operating on commercial and / or industrial wireless networks, and the like. In the following description, the terms “terminal device” , “communication device” , “terminal” , “user equipment” and “UE” may be used interchangeably.
[0055] To improve the performance of a communication system, the network energy saving (NES) technology is introduced. NES is a technology or concept aimed at optimizing and reducing the energy consumption in network infrastructures. It is commonly applied in telecommunications, base stations, data centers and other networking environments, where energy usage can be significant due to the continuous operation of the base stations, servers, and other network devices. The goal of NES is to make networks more sustainable by reducing their carbon footprint while maintaining or even improving performance and reliability. This concept is becoming more critical as the demand for internet services grows, and the need to minimize energy use and operational costs becomes more urgent in the context of climate change and sustainability goals. Key features of the NES include a sleep mode technologies that implements sleep modes for network devices / components, such as base stations, allows these devices to reduce energy usage during periods of low demand. Furthermore, these devices, such as the base station, in sleep mode may wake up “on demand (OD) ” .
[0056] The Release 19 work item on NES includes the following objective regarding OD-SIB1 for idle / inactive mode UEs. OD-system information block (SIB) 1 for UEs in idle / inactive mode is specified to be supported. One case is that UE obtains uplink (UL) wake up signal (WUS) configuration from Cell A; UE transmits UL WUS on NES Cell; UE receives on-demand SIB1 from NES Cell. Procedures, signaling method (s) and triggering wake up method by uplink (UL) wake up signal (WUS) using physical random access channel (PRACH) is specified. In some embodiments of the disclosure, the term “Cell A” refers to the cell that is periodically transmitting at least its own SIB1. The term “NES Cell” refers to the cell that may transmit SIB1 transmission in response to UL WUS from a UE.
[0057] In view of the above, the OD-SIB1 transmission related to the NES technology is preliminarily specified as below. The capacity cell referred as NES cell operating with OD-SIB1 mode will not periodically broadcast the SIB1. Instead, the SIB1 of the cell will be provided on-demand, i.e., based on the UE in RRC idle or RRC inactive requesting its transmission. As can be seen from the objective, the UE will trigger the transmission of SIB1 by sending a wake-up signal (WUS) , which could e.g., be a Physical Random-Access Channel (PRACH) i.e. a preamble. This requires that the UE is configured with resources and information to transmit the WUS. In addition, it is expected that the impact to legacy UE and the impact to the specification for supporting the above features can be minimized.
[0058] As such, in a specific example, UE obtains WUS configuration from Cell A. Then, UE sends UL WUS (i.e., random access channel, RACH or Message 1, Msg 1, for a random access procedure) to the NES Cell. UE monitors / receives a RAR response from the cell that receives the UL WUS. In addition, UE receives OD-SIB1 from the NES Cell. In other words, it may assume that UE may expect to receive the RAR responding to the preamble transmission for Msg1-based on-demand SIB1 procedure.
[0059] In addition, in the multi-beam access procedure, the beam selected for communication may be implicitly indicated by an association relationship to a synchronization signal block (SSB) . In brief, the SSB with different indexes are broadcast by the network device in each of its beams. UE detects the received SSBs and select at least one SSB fulfilling a certain criterion (e.g., SSB received power is above a threshold) , then UE uses a random access occasion (RO) associated with the at least one SSB to transmit a random access channel (PRACH) containing a preamble associated with the at least one SSB. Since the association relationship between the RO and SSB (index) and the association relationship between the SSB (index) and preamble is configured by the network device, the network device may be aware that which beam is requested or selected by the terminal device upon receiving the PRACH in the associated RO (the network device is aware that this SSB is transmitted via which beam) . Specifically, the beam associated with the RO containing the PRACH is the requested beam. Then, the network device and terminal device will use this beam to perform the subsequent communication. As such, in some embodiments of the disclosure, the beam may be represented by “SSB (index) , transmitted SSB or SSB beam” . In other words, the terms “SSB (index) ” , “transmitted SSB” , “SSB beam” and “beam” can be used interchangeably. In addition or alternatively, this may be referred to as “the beam corresponding to the transmitted SSB” .
[0060] The actual transmitted SSBs are sequentially numbered from one in ascending order of their SSB indexes. The UE assumes that, in the system information (SI) reception window, a physical downlink control channel (PDCCH) for a system information message is transmitted in at least one PDCCH monitoring occasion corresponding to each transmitted SSB and thus the selection of SSB for the reception SI messages is up to UE implementation.
[0061] In one case, to ensure the reliability of OD-SIB1 transmission, considering the network transmission of OD-SIB1 is performed in all SSB beam directions. However, this design may result in a relatively large and unnecessary network energy consumption. In turn, the on-demand SIB1 feature in Release 19 not only enables the SIB1 transmission to be made on-demand, based on the UE requesting the transmission of SIB1, but also enables SIB1 transmission only in the requested SSB beam direction.
[0062] In the case that the SIB transmission is only in the requested SSB beam direction, some issues may occur. For example, for the UE that is moving, it may move from the coverage area of the requested SSB beam to another coverage area of e.g., a neighboring beam. Especially in the case of frequency range (FR) 2 where the beam width is very narrow, UE may move out of the coverage area of the requested SSB beam in a higher possibility. As such, since UE moves to another SSB beam, UE is likely to miss or not be able to receive OD-SIB1 successfully which is transmitted in the requested SSB beam direction (associated with the PRACH) . Some details regarding the moving UE is further discussed with reference to FIG. 1B.
[0063] In view of these analyses and considerations, a new solution is proposed in some embodiments of the present disclosure. The terminal device can provide assistance information (e.g., certain preamble or PRACH resources) to indicate whether the UE is expecting to monitor OD-SIB1 on more than one beam other than the one associated with the WUS which UE transmitted for requesting OD-SIB1.
[0064] In some aspects, a terminal device transmits to a network device a signal using a set of resources, and the set of resources indicates whether more than one beam is requested for OD-system information. Then, the terminal device receives the OD-system information via one or more beams associated with the set of resources from the network device.
[0065] As an example, if the terminal device is in a (fast) moving status, the terminal device is located at an edge of the selected beam or the terminal device is operating within FR2, the terminal device may to transmit a WUS (e.g., PRACH) by using the set of resources which indicates more than one beam is requested. Then, the network device may transmit the OD-system information (e.g., SIB1) via more than one beam to improve the success rate. Otherwise, if the terminal device is at a (quasi) static status or is at the middle of the coverage area of the requested beam, the terminal device may to transmit a WUS (e.g., PRACH) by using the set of resources which indicates one beam is requested.
[0066] In this way, the success rate of the reception of OD-system information may be improved without vanishing the NES gain.
[0067] Principles and embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Reference is first made to FIG. 1A, which illustrates an example communication system 100 (or referred to as communication network) in which embodiments of the present disclosure may be implemented. The system 100, for example, a communication network, includes a terminal device 110, a network device 120 and a network device 130. For discussion purposes, the network device 120 may be also referred to as the first network device 120, and the network device 130 may be also referred to as the second network device 130.
[0068] In some embodiments of the disclosure, the first network device 120 may provide the “NES cell” 125 mentioned above. That is, the second network device 120 may not periodically broadcast the SIB1. Instead, the SIB1 of the cell will be provided on-demand, e.g., based on the terminal device 110 in RRC idle or RRC inactive requesting its transmission. The second network device 130 may provide “Cell A” 135 mentioned above. That is, the first network device 120 may periodically transmit at least its own SIB1. In addition, although the WUS configuration is obtained from the Cell A 135 in the above examples, the terminal device 110 may obtain the WUS configuration from the Cell A 135 and the NES Cell 125 in some embodiments of the disclosure without any limitation.
[0069] It is to be understood that the number of network devices and terminal devices is only for the purpose of illustration without suggesting any limitations. The system 100 may include any suitable number of network devices and terminal devices adapted for implementing embodiments of the present disclosure.
[0070] Communications in the communication system 100 may be implemented according to any proper communication protocol (s) , comprising, but not limited to, cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and / or any other protocols currently known or to be developed in the future. Moreover, the communication may utilize any proper wireless communication technology, comprising but not limited to: Code Division Multiple Access (CDMA) , Frequency Division Multiple Access (FDMA) , Time Division Multiple Access (TDMA) , Frequency Division Duplex (FDD) , Time Division Duplex (TDD) , Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Division Multiple (OFDM) , Discrete Fourier Transform spread OFDM (DFT-s-OFDM) and / or any other technologies currently known or to be developed in the future.
[0071] FIG. 1B illustrates an example of OD-system information block (SIB) 1 transmission in the case that a terminal device is at moving status and the timing of a random access response (RAR) reception window and an SIB reception window.
[0072] As shown in FIG. 1B, the terminal device 110 may be in a moving state. For example, the terminal device 110 may trigger a transmission of OD-SIB1 by transmitting a WUS / PRACH in a RO associated with the SSB_0 beam 140 (or beam 140) , i.e., the terminal device 110 requests the OD-SIB1 is to be transmitted via the SSB_0 140. The timing of transmitting PRACH / WUS is schematically shown in the lower part of FIG. 1A. While waiting for the random access response (RAR) for the PRACH, the terminal device 110 may move from the coverage of SSB_0 beam 140 to the coverage of the SSB_1 beam 150. In this case, although the terminal device 110 still detect the RAR in the RAR reception window 160 (e.g., 10ms) , the RAR may be not received successfully since the terminal device 110 is out of the coverage of SSB_0 beam 140. Similarly, when the terminal device 110 detects the OD-SIB1 triggered by the PRACH or WUS during the SIB reception window 170 (which may be also referred to as SI window in some embodiments) , the OD-SIB1 may not be received successfully. Especially, the timing of the SI window 170 is later than the RAR reception window 160, the success rate of receiving the OD-SIB1 is lower accordingly.
[0073] One trivial solution to ensure a moving UE to receive OD-SIB1, is that the UE assumes that the SIB1 is transmitted in all SSB beams when UE request OD-SIB1 on a specific beam. However, this solution is not acceptable for Rel. 19 as the NES gain will largely be reduced.
[0074] In view of the above consideration and analysis, some embodiments of the disclosure propose that UE may provide assistance information to indicate whether the UE is expecting to monitor OD-SIB1 on more beams other than the one associated with the WUS it transmitted for requesting OD-SIB1.
[0075] Furthermore, the following issue may need to be considered, i.e., how could the UE assist the network to transmit of OD-SIB1 in a given or some SSB beam directions and to ensure that UE requesting OD-SIB1 can receive the SIB1 whatever UE stays in the same beam or move to another beam. Similarly, the RAR reception may be also considered with respect to the moving UE under the NES cell.
[0076] Reference is now made to FIG. 2, which illustrates an example signaling process 200 for the beam-level OD system information transmission according to example embodiments of the present disclosure. For the purpose of discussions, the signaling process 200 will be described with reference to FIG. 1A. It would be appreciated that although the signaling process 200 has been described in the communication environment 100 of FIG. 1A, this signaling process 200 may be likewise applied to other communication scenarios.
[0077] In the signaling process 200, the terminal device 110 transmits (210) a signal 215 to the network device 120 (i.e., the first network device 120 providing the NES cell) by using a set of resources which indicates whether more than one beam is requested for the OD system information (e.g., OD-SIB1) . In some embodiments, the set of resources may be configured to be associated with one beam. In this case, the set of resources (implicitly) indicates that one beam is requested for the OD system information. This one beam may be the beam (or SSB) associated with (or corresponding to) the signal 215 (or the random access occasion containing the signal 215) received from the terminal device 110. Alternatively, the set of resources may be configured to be associated with more than one beam. In this case, the set of resources (implicitly) indicates that more than one beam is requested for the OD system information. In some embodiments, the more than one beam may include the one beam that is associated with the signal 215 and at least one another beam.
[0078] In some embodiments, the OD-system information may include other system information that is informed in the broadcast manner. In an example, the OD-system information may include SIB2, SIB3, SIB4 and so on. In some other examples, the OD-system information may include other system information.
[0079] In some embodiments, the association between the set of resources and the number of beams (e.g., one beam or more than one beam) may be obtained by a WUS configuration. Still referring to FIG. 2, the second network device 130 providing “Cell A” may transmit (201) a WUS configuration 202 to the terminal device 110. The WUS configuration 202 may carry information on multiple sets of resources comprising the set of resources, and a set of resources of the multiple sets of resources is associated with one or more beams.
[0080] In some embodiments, the multiple sets of resources may at least include two sets of resources. For example, the multiple sets of resources may include a first set of resources associated with one beam, and a second set of resources associated with more than one beam. Without any limitation, in some embodiments, the multiple sets of resources may further include any other sets of resources associated with one or more beams.
[0081] In some embodiments, a set of resources among the multiple sets of resources may be a set of preambles for the PRACH transmission. In addition or alternatively, the set of resources may be a set of random access occasions (RO) . In addition or alternatively, the set of resources may be a set of PRACH resources, e.g., frequency domain resources, time domain resources, or preambles (sequences) . Some examples regarding these specific resources are further discussed hereinafter. Then, the terminal device receives (203) the WUS configuration 202 from the first network device 130 accordingly.
[0082] Alternatively, in some embodiments, the WUS configuration is obtained from the first network device 120 providing the NES Cell without any limitation. As shown in FIG. 2, the first network device 120 may transmit (205) the WUS configuration 206 to the terminal device 110. The WUS configuration 206 may be the same as or similar to the WUS configuration 202. Then, the terminal device 110 may receive (207) the WUS configuration 206 from the first network device 120 accordingly.
[0083] As mentioned above, the terminal device may move out of the coverage of the requested SSB, beam or SSB beam. In some embodiments of the disclosure, the terminal device 110 may select the set of resources among the multiple sets of resources for transmitting the signal 215 based on the mobility status of the terminal device 110. In this way, the terminal device may indicate whether more than one beam is requested based on its mobility status.
[0084] In an example, the terminal device 110 may determine a mobility status of the terminal device. Then, if the mobility status is at a first mobility level (e.g., a high mobility level, or a high speed level and so on) , the terminal device 110 may determine that more than one beam is requested for the OD system information. Then, the terminal device 110 may select, e.g., the second set of resources associated with more than one beam among the multiple sets of resources. The terminal device 110 may use the selected second set of resources to transmit (210) the signal 215.
[0085] Alternatively, if the mobility status is at a second mobility level (e.g., a low mobility level, or a low speed level and so on) , the terminal device may determine that one beam is requested for the OD system information. Then, the terminal device 110 may select, e.g., the first set of resources associated with one beam among the multiple sets of resources. The terminal device 110 may use the selected first set of resources to transmit (210) the signal 215.
[0086] Taking the WUS configuration carrying the information on multiple sets of preambles as an example, in some embodiments, the WUS configuration may include at least two sets of preambles. In an example, the terminal device 110 may use a preamble from the first set of preambles, to request OD-SIB1 only in the SSB beam associated to PRACH / WUS transmitted by the terminal device 110. The first set of preambles can be used by the terminal device which is at (quasi) static mobility state.
[0087] In addition, the terminal device 110 may use another preamble from the second set of preambles, to request OD-SIB1 in more than one beam at least including the SSB beam associated to PRACH / WUS transmitted by UE. The second set of preambles can be used by the terminal device which is at mobility state.
[0088] Still referring to FIG. 2, the network device 120 receives (220) the signal 215 that is transmitted by using the set of resources selected by the terminal device 110. As mentioned above, the set of resources indicates whether more than one beam is requested for the OD-system information. In some embodiments, if the set of resources is associated with more than one beam, the network device 120 may determine that more than one beam is requested for the OD-system information. In this case, the network device 120 may transmit the OD-system information via the more than one beam. Alternatively, if the set of resources is associated with one beam, the network device 120 may determine that more than one beam is not requested for the OD-system information. In this case, the network device 120 may transmit the OD-system information via the one beam.
[0089] In some embodiments, the above one beam is the one beam associated with the signal 215 (which may be also referred to as a first beam for discussion purposes) . In addition, the more than one beam may include the first beam and at least one neighboring beam that is neighboring to the first beam. As mentioned above, the actual transmitted SSBs are sequentially numbered from one in ascending order of their SSB indexes. In some embodiments, the network device 120 may determine some SSB beams which have neighboring indexes to the index of the first beam as the at least one neighboring beam. Alternatively, in some embodiments, the network device 120 may determine the at least one neighboring beam based on a measurement report from the terminal device. For example, the terminal device 110 may transmit a measurement report related to one or more beams to the network device 120.
[0090] The measurement report may be transmitted in a payload of the signal 215. In some embodiments, the signal 215 may be WUS or PRACH as mentioned above. In addition or alternatively, the signal 215 may be Message 1 (Msg1) , Message A (MsgA) or Message 3 (Msg3) for a random access procedure. Thus, the measurement report may be transmitted in the Msg1, MsgA or Msg 3 accordingly. Furthermore, in other words, the terminal device 110 may indicate by WUS, Msg1, Msg3 or MsgA whether the terminal device 110 expects to receive the OD_SIB1 on the beam associated with the WUS transmitted or on the at least one beam.
[0091] With the measurement report, the network device 120 may determine the at least one neighboring beam.
[0092] In addition or alternatively, the set of resources indicating whether more than one beam is requested may be determined based on a difference between received power associated with different beams. For example, assuming that the terminal device 110 is located at the center / middle of a beam coverage, the received power associated with another beam is usually much smaller than that of the beam where the terminal device is located in. When the terminal device 110 is at edge of a beam, the difference between received power associated with different beams may be small. Moreover, in this case the terminal device may move to another beam in a high possibility. In an example, the received power may be a reference signal received power (RSRP) of SSB transmitted in the corresponding beam. Alternatively, the received power may be any other signal strength indicator associated with the beam.
[0093] In some embodiments, the terminal device 110 may receive from the network device 120 or the network device 130 an indication of a difference threshold. In some embodiments, the indication of difference threshold is carried in the WUS configuration mentioned above. In some other embodiments, the indication of difference threshold is transmitted separately. Furthermore, the terminal device 110 may measure a first received power associated with a first beam (e.g., a first SSB RSRP of the first beam) among the plurality of beams from the network device. The terminal device 110 may measure a second received power (e.g., a second SSB RSRP of the first beam) with a second beam among the plurality of beams.
[0094] Then, the terminal device 110 may select the set of resources indicating whether more than one beam is requested based on the difference threshold difference and a difference between the first received power and the second received power. In an example, if the difference is above or equal to the difference threshold (e.g., the terminal device may be at the edge of a beam mentioned above) , the terminal device 110 may select the second set of resources indicating that more than one beam is requested. Alternatively, if the difference is below the threshold (e.g., the terminal device may be at the “middle” of a beam mentioned above) , the terminal device 110 may select the first set of resources indicating that one beam is requested.
[0095] In addition, in some embodiments, the first received power associated with the first beam is the highest received power among the plurality of beams. The second received power associated with the second beam is the second highest received power among the plurality of beams.
[0096] Still referring to FIG. 2, the network device 120 transmits (230) the OD-system information 245 to the terminal device 250 via one or more beams associated with set of resources. In an example, if the set of resources indicates that more than one beam is requested, the network device 120 may transmit the OD-system information via the beam 231 associated with (or corresponding to) the signal 215 (or RO containing the signal 215) and neighboring beams 231 and 233. In another example, if the set of resources indicates that more than one beam is not requested, the network device 120 may transmit the OD-system information via the beam 231 associated with (or corresponding to) the signal 215 (or RO containing the signal 215) . Then, the terminal device 110 receives (250) the OD-system information 245 via the one or more beams accordingly.
[0097] In some embodiments, the terminal device 110 may also receive the RAR for the signal 215 (e.g., the PRACH) via the one or more beams associated with the selected set of resources. In some embodiments, in the case that the set of resources for the signal 215 is associated with one beam, the terminal device 110 may monitor the RAR message during a RAR reception window via the one beam, and monitor the OD-system information during a system information reception window via the one beam. Alternatively, in the case that the set of resources is associated with more than one beam, the terminal device 110 may monitor the RAR message during the RAR reception window via the more than one beam, and monitor the OD-system information during the system information reception window via the more than one beam.
[0098] Still referring to the above example that WUS configuration carries the information on multiple sets of preambles. At the network side, upon detecting the preamble from the first set of preambles, the network device 120 may transmit OD-system information in one monitoring occasion corresponding to SSB (beam) associated to PRACH / WUS including the preamble received from the terminal device 110.
[0099] Alternatively, upon detecting the preamble from the second set of preambles, the network device 120 may transmit the OD-system information in more than one beam. The more than one beam may include a first beam associated with the signal 215 received from the terminal device and neighboring beams of the first beam. The terminal device 110 may also assume the same for the OD-system information.
[0100] In some embodiments, the above reception of the OD-system information and the RAR may include receiving a physical downlink control channels (PDCCH) for the OD-system information and PDCCH for the RAR. For example, the terminal device 110 may detect the PDCCH for RAR and PDCCH for the OD-system information via the one or beams and receive the RAR and OD-system information accordingly. Similarly, the above transmission of the OD-system information and RAR may include transmitting the PDCCH for the OD-system information and PDCCH for the RAR.
[0101] Still in the above example, upon detecting the preamble from the first set of preambles, the network device 120 may transmit PDCCH for RAR message and PDCCH for an SIB1 message in one monitoring occasion corresponding to SSB (beam) associated to PRACH / WUS including the preamble received from the terminal device 110.
[0102] Alternatively, upon detecting the preamble from the second set of preambles, the network device 120 may transmit the OD-system information in more than one PDCCH monitoring occasion that includes the one monitoring occasion corresponding to a first SSB (beam) associated to PRACH / WUS received from the terminal device 110 and neighboring SSB of the first SSB (or SSB beam) . The terminal device 110 may also assume the same for RAR message and SIB1 payload carried by PDSCH.
[0103] In view of the above, the terminal device may provide assistance information based on the set of resources selected from the WUS configuration for the network device to determine whether more than one beam is requested for the OD-system information. Some further resource examples are further discussed below.
[0104] In some embodiments, the WUS configuration may include different sets of random access occasions (RO) . A set of ROs of the different sets of ROs may be associated with an indication of the set of beams that the terminal device 110 requests the OD-SIB1 to be transmitted on. For example, one set of ROs may be associated with multiple SSBs. In the case that the terminal device 110 uses this set, the network device 120 may transmit the RAR / SIB1 to the terminal device 110 in these multiple different SSBs (or SSB beams) .
[0105] In addition or alternatively, the WUS configuration may include different sets of PRACH resources. Similarly, a set of PRACH resources may be associated with one or more beams. For example, one set of PRACH resources may be associated with multiple SSBs. In the case that the terminal device 110 uses this set, the network device 120 may transmit the RAR / SIB1 to the terminal device 110 in these multiple different SSBs (or SSB beams) .
[0106] In some embodiments of the disclosure, one or more beams may be indicated by a spatial transmission mode. That is, a set of resources of multiple sets of resources indicated by the WUS configuration may be associated with a respective spatial transmission mode that indicates one or more beams.
[0107] In view of the above embodiments, resource segmentation carried by the WUC configuration may indicate whether the terminal device 110 expects to receive OD-SIB1 on more than one beam.
[0108] In addition, in another aspect, since the beam coverage in FR2 is smaller than or is narrower than the beam coverage in FR1, the terminal device may expect that NES cell transmit OD-SIB1 in different directions, which is not the case for FR1. That is, for FR2, it is expected that beams for the OD-system information may be further refined relative to FR1
[0109] FIG. 3 illustrates another example signaling process 300 for the beam-level on demand (OD) system information transmission according to example embodiments of the present disclosure. For the purpose of discussions, the signaling process 200 will be described with reference to FIG. 1A. It would be appreciated that although the signaling process 200 has been described in the communication environment 100 of FIG. 1A, this signaling process 200 may be likewise applied to other communication scenarios.
[0110] In the signaling process 300, the terminal device 110 transmits a signal 315 within the operating frequency range. In some embodiments, the operating frequency range may be FR1. In an example, the FR1 may be 450Mhz to 600Mhz. In some embodiments, the operation frequency range may be FR2. In an example, the FR2 may be 24250Mhz to 52600Mhz. It is to be understood that the FR1 and FR2 may be any other frequency range in the future which is also covered by this embodiment.
[0111] The terminal device 110 may assume, based on the operating frequency range, that PDCCH for the OD-system information is transmitted in one PDCCH monitoring occasion (which may be also referred to as a first PDCCH monitoring occasion) corresponding to the SSB beam that is associated with the signal 315, or more than one PDCCH monitoring occasions including the first PDCCH monitoring occasion.
[0112] In some embodiments, the signal 315 may be transmitted within FR1. In this case, the terminal device 110 may assume that PDCCH for the OD-system information is transmitted in the first PDCCH monitoring occasion corresponding to the SSB beam. Alternatively, in some embodiments, the signal 315 may be transmitted within FR2. In this case, the terminal device 110 may assume that PDCCH for the OD-system information is transmitted in more than one beam including the first PDCCH monitoring occasion corresponding to the SSB beam. That is, FR1 is associated with one beam for the first PDCCH monitoring occasion, and FR2 is associated with more than one beam for the more than one PDCCH monitoring occasion. In this way, even if the coverage of a beam in FR2 is narrower or smaller, the success rate of OD-system information transmission may be improved.
[0113] The network device 120 receives (320) the signal 315 accordingly. In turn, if the signal 315 is received within FR1, the network device 120 may transmit the PDCCH for the OD-system information in the first PDCCH monitoring occasion corresponding to the SSB beam that is associated with the signal 315. In the example of FIG. 3, the network device 120 may transmit the OD-system information in one PDCCH monitoring occasions of one beam 332. Alternatively, if the signal 315 is received within FR2, the network device 120 may transmit the PDCCH for the OD-system information in more than one beam including the first PDCCH monitoring occasion corresponding to the SSB beam. In another example of FIG. 3, the network device 120 may transmit the OD-system information in more than one PDCCH monitoring occasions of beams 331, 332 and 333.
[0114] Then, the terminal device 110 receives (340) a control channel (e.g., the PDCCH for the OD-system information) by detecting PDCCH in one or more PDCCH monitoring occasions associated with the operating frequency range. As an example, if the operating frequency range is FR2, the terminal device 110 may receive the control channel by detecting PDCCH in more than one PDCCH monitoring occasion of e.g., beams 331, 332, and 333. if the operating frequency range is FR1, the terminal device 110 may receive the control channel by detecting PDCCH in one PDCCH monitoring occasion of e.g., beams 332.
[0115] FIG. 4 illustrates a flowchart 400 of a method implemented at a terminal device according to some embodiments of the present disclosure. The terminal device performing the method 400 may be an example of the terminal device 110 above.
[0116] At 410, the terminal device 110 transmits, to a network device 120, a signal using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information. At 420, the terminal device 110 receives, from the network device 120, the OD-system information via one or more beams associated with the set of resources.
[0117] In some embodiments, the terminal device may further receive a wake up signal (WUS) configuration. The WUS configuration carries information on multiple sets of resources comprising the set of resources, and a set of resources of the multiple sets of resources is associated with one or more beams.
[0118] In some embodiments, a set of resources of the multiple sets of resources comprises at least one of the following: a set of preambles; a set of random access occasions (RO) ; or a set of physical random access channel (PRACH) resources.
[0119] In some embodiments, the multiple sets of resources comprise: a first set of resources associated with one beam; and a second set of resources associated with more than one beam.
[0120] In some embodiments, the terminal device may transmit the signal by the following: determining a mobility status of the terminal device; selecting, based on the mobility status, the set of resources indicating whether more than one beam is requested for the OD-system information among the multiple sets of resources; and transmitting the signal using at least one resource of the set of resources.
[0121] In some embodiments, the terminal device may select the set of resources by the following: determining that more than one beam is requested for the OD system information based on determining that the mobility status is at a first mobility level; and selecting, among the multiple sets of resources, the second set of resources associated with more than one beam as the set of resources for transmitting the signal.
[0122] In some embodiments, the terminal device may select the set of resources by the following: determining that one beam is requested for the OD system information based on determining that the mobility status is at a second mobility level; and selecting, among the multiple sets of resources, the first set of resources associated with the one beam as the set of resources for transmitting the signal.
[0123] In some embodiments, the signal is transmitted via the one beam, and the more than one beam comprises the one beam and at least one neighboring beam that is neighboring to the one beam.
[0124] In some embodiments, the terminal device may further transmit, to the network device, a measurement report related to one or more beams for determining the at least one neighboring beam.
[0125] In some embodiments, the measurement report is transmitted in at least one of the following: a Message A (MsgA) for a random access procedure; a Message 3 (Msg3) for the random access procedure; or a Message 1 (Msg1) for the random access procedure.
[0126] In some embodiments, the terminal device may further receive an indication of a difference threshold; determine a difference between a first received power associated with a first beam among a plurality of beams from the network device and the second received power associated with a second beam among the plurality of beams; select, based on the difference threshold and the difference, the set of resources indicating whether more than one beam is requested for the OD-system information among the multiple sets of resources; and transmit the signal using at least one resource of the set of resources.
[0127] In some embodiments, the first received power associated with the first beam is the highest received power among the plurality of beams, and the second received power associated with the second beam is the second highest received power among the plurality of beams.
[0128] In some embodiments, a set of resources of the multiple sets of resources is associated with a spatial transmission mode indicating the one or more beams. In some embodiments, the signal comprises at least one of the following: a WUS; a physical random access channel (PRACH) transmission; a Message 1 (Msg1) for a random access procedure; or a Message 3 (Msg3) for the random access procedure.
[0129] In some embodiments, the terminal device may further receive, from the network device, a random access response (RAR) message via the one or more beams associated with the set of resources.
[0130] In some embodiments, the terminal device may receive the RAR message and OD-system information by the following: in a case that the set of resources is associated with one beam, monitoring the RAR message during a RAR reception window via the one beam, and monitoring the OD-system information during a system information reception window via the one beam; and in a case that the set of resources is associated with more than one beam, monitoring the RAR message during the RAR reception window via the more than one beam, and monitoring the OD-system information during the system information reception window via the more than one beam.
[0131] FIG. 5 illustrates a flowchart 500 of a method implemented at a network device according to some embodiments of the present disclosure. The network device performing the method 500 may be an example of the network device 120 above.
[0132] At 510, the network device 120 receives, from a terminal device, a signal using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information. At 520, the network device 120 transmits, to the terminal device, the OD-system information via one or more beams associated with the set of resources.
[0133] In some embodiments, the network device may further transmit, to the terminal device, a wake up signal (WUS) configuration. The WUS configuration carries information on multiple sets of resources comprising the set of resources, and a set of resources of the multiple sets of resources is associated with one or more beams.
[0134] In some embodiments, a set of resources of the multiple sets of resources comprises at least one of the following: a set of preambles; a set of random access occasions (RO) ; or a set of physical random access channel (PRACH) resources.
[0135] In some embodiments, the multiple sets of resources comprise: a first set of resources associated with one beam; and a second set of resources associated with more than one beam.
[0136] In some embodiments, the network device may transmit the OD-system information by the following: based on that the set of resources is associated with more than one beam, determining that more than one beam is requested for the OD-system information; and transmitting the OD-system information via the more than one beam.
[0137] In some embodiments, the network device may transmit the OD-system information by the following: based on that the set of resources is associated with one beam, determining that more than one beam is not requested for the OD-system information; and transmitting the OD-system information via the one beam.
[0138] In some embodiments, the signal is transmitted via the one beam, and the more than one beam comprises the one beam and at least one neighboring beam that is neighboring to the one beam.
[0139] In some embodiments, the network device may further receive, from the terminal device, a measurement report related to one or more beams; determine the at least one neighboring beam based on the measurement report.
[0140] In some embodiments, the measurement report is transmitted in at least one of the following: a Message A (MsgA) for a random access procedure; a Message 3 (Msg3) for the random access procedure; or a Message 1 (Msg1) for the random access procedure.
[0141] In some embodiments, a set of resources of multiple sets of resources is associated with a spatial transmission mode indicating the one or more beams.
[0142] In some embodiments, the network device may further transmit, to the terminal device, a difference threshold for determining the set of resources indicating whether more than one beam is requested for on demand (OD) -system information.
[0143] In some embodiments, the signal comprises at least one of the following: a WUS; a physical random access channel (PRACH) transmission; a Message 1 (Msg1) for a random access procedure; or a Message 3 (Msg3) for the random access procedure.
[0144] In some embodiments, the network device may further transmit, to the terminal device, a random access response (RAR) message via the one or more beams associated with the set of resources.
[0145] FIG. 6 illustrates a flowchart 600 of a method implemented at a network device according to some embodiments of the present disclosure. The network device performing the method 600 may be an example of the terminal device 130 above.
[0146] At 610, the network device 130 transmits, to a terminal device, a wake up signal (WUS) configuration. The WUS configuration carries information on multiple sets of resources for transmitting a signal, and a set of resources of the multiple sets of resources is associated with one or more beams.
[0147] In some embodiments, a set of resources of the multiple sets of resources comprises at least one of the following: a set of preambles; a set of random access occasions (RO) ; or a set of physical random access channels (PRACH) .
[0148] In some embodiments, the signal comprises at least one of the following: a WUS; a physical random access channel (PRACH) transmission; a Message 1 (Msg1) for a random access procedure; or a Message 3 (Msg3) for the random access procedure.
[0149] In some embodiments, the network device may further transmit, to the terminal device, a difference threshold for determining the set of resources indicating whether more than one beam is requested for on demand (OD) -system information.
[0150] FIG. 7 illustrates a flowchart 700 of a method implemented at a terminal device according to some embodiments of the present disclosure. The terminal device performing the method 700 may be an example of the terminal device 110 above.
[0151] At 710, the terminal device 110 transmits, to a network device, a signal in an operating frequency range. At 720, the terminal device 110 receives, from the network device, a control channel transmission for on-demand (OD) -system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0152] In some embodiments, the operating frequency range comprises: a Frequency Range (FR) 1; and an FR 2.
[0153] In some embodiments, the signal is transmitted in FR1, and the terminal device is caused to receive the control channel transmission by: detecting the control channel transmission in one control channel monitoring occasion associated with the FR1.
[0154] In some embodiments, the signal is transmitted in FR2, and the terminal device is caused to receive the control channel transmission by: detecting the control channel transmission in more than one control channel monitoring occasion associated with the FR2.
[0155] In some embodiments, the signal comprises at least one of the following: a WUS; a physical random access channel (PRACH) transmission; a Message 1 (Msg1) for a random access procedure; or a Message 3 (Msg3) for the random access procedure.
[0156] FIG. 8 illustrates a flowchart 800 of a method implemented at a network device according to some embodiments of the present disclosure. The network device performing the method 800 may be an example of the network device 120 or 130 above. The following embodiment is discussed with reference to the network device 120.
[0157] At 810, the network device 120 receives, from a terminal device, a signal within an operating frequency range. At 820, the network device transmits, to the terminal device 110, a control channel for on-demand (OD) -system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0158] In some embodiments, the signal is transmitted within FR1, and the network device may transmit the control channel by the following: transmitting the control channel in one control channel monitoring occasion associated with the FR1.
[0159] In some embodiments, the signal is transmitted within FR2, and the network device may transmit the control channel by: transmitting the control channel in more than one control channel monitoring occasion associated with the FR2.
[0160] In some embodiments, the signal comprises at least one of the following: a WUS; a physical random access channel (PRACH) transmission; a Message 1 (Msg1) for a random access procedure; or a Message 3 (Msg3) for the random access procedure.
[0161] In some embodiments, an apparatus capable of performing any of the method 400 (for example, the terminal device) may comprise means for receiving, from a terminal device, a signal using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information; and means for transmitting, to the terminal device, the OD-system information via one or more beams associated with the set of resources.
[0162] In some embodiments, the apparatus may further include means for receiving a wake up signal (WUS) configuration. The WUS configuration carries information on multiple sets of resources comprising the set of resources, and a set of resources of the multiple sets of resources is associated with one or more beams.
[0163] In some embodiments, a set of resources of the multiple sets of resources comprises at least one of the following: a set of preambles; a set of random access occasions (RO) ; or a set of physical random access channel (PRACH) resources.
[0164] In some embodiments, the multiple sets of resources comprise: a first set of resources associated with one beam; and a second set of resources associated with more than one beam.
[0165] In some embodiments, the means for transmitting the signal may include: means for determining a mobility status of the terminal device; selecting, based on the mobility status, the set of resources indicating whether more than one beam is requested for the OD-system information among the multiple sets of resources; and means for transmitting the signal using at least one resource of the set of resources.
[0166] In some embodiments, the means for selecting the set of resources may include: means for determining that more than one beam is requested for the OD system information based on determining that the mobility status is at a first mobility level; and means for selecting, among the multiple sets of resources, the second set of resources associated with more than one beam as the set of resources for transmitting the signal.
[0167] In some embodiments, the means for selecting the set of resources may include: means for determining that one beam is requested for the OD system information based on determining that the mobility status is at a second mobility level; and means for selecting, among the multiple sets of resources, the first set of resources associated with the one beam as the set of resources for transmitting the signal.
[0168] In some embodiments, the signal is transmitted via the one beam, and the more than one beam comprises the one beam and at least one neighboring beam that is neighboring to the one beam.
[0169] In some embodiments, the terminal device may further transmit, to the network device, a measurement report related to one or more beams for determining the at least one neighboring beam.
[0170] In some embodiments, the measurement report is transmitted in at least one of the following: a Message A (MsgA) for a random access procedure; a Message 3 (Msg3) for the random access procedure; or a Message 1 (Msg1) for the random access procedure.
[0171] In some embodiments, a set of resources of the multiple sets of resources is associated with a spatial transmission mode indicating the one or more beams. In some embodiments, the signal comprises at least one of the following: a WUS; a physical random access channel (PRACH) transmission; a Message 1 (Msg1) for a random access procedure; or a Message 3 (Msg3) for the random access procedure.
[0172] In some embodiments, the apparatus may further include means for receiving, from the network device, a random access response (RAR) message via the one or more beams associated with the set of resources.
[0173] In some embodiments, the apparatus further comprises means for performing other steps in some embodiments of the method 400. In some embodiments, the means comprises at least one processor and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the performance of the apparatus.
[0174] In some embodiments, an apparatus capable of performing any of the method 500 (for example, the network device) may comprise means for receiving, from a terminal device, a signal using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information; and means for transmitting, to the terminal device, the OD-system information via one or more beams associated with the set of resources.
[0175] In some embodiments, the apparatus may further include means for transmitting, to the terminal device, a wake up signal (WUS) configuration. The WUS configuration carries information on multiple sets of resources comprising the set of resources, and a set of resources of the multiple sets of resources is associated with one or more beams.
[0176] In some embodiments, a set of resources of the multiple sets of resources comprises at least one of the following: a set of preambles; a set of random access occasions (RO) ; or a set of physical random access channel (PRACH) resources.
[0177] In some embodiments, the multiple sets of resources comprise: a first set of resources associated with one beam; and a second set of resources associated with more than one beam.
[0178] In some embodiments, the means for transmitting the OD-system information may include: means for based on that the set of resources is associated with more than one beam, determining that more than one beam is requested for the OD-system information; and means for transmitting the OD-system information via the more than one beam.
[0179] In some embodiments, the means for transmitting the OD-system information may include: means for based on that the set of resources is associated with one beam, determining that more than one beam is not requested for the OD-system information; and means for transmitting the OD-system information via the one beam.
[0180] In some embodiments, the signal is transmitted via the one beam, and the more than one beam comprises the one beam and at least one neighboring beam that is neighboring to the one beam.
[0181] In some embodiments, the apparatus may further include means for receiving, from the terminal device, a measurement report related to one or more beams; means for determine the at least one neighboring beam based on the measurement report.
[0182] In some embodiments, the measurement report is transmitted in at least one of the following: a Message A (MsgA) for a random access procedure; a Message 3 (Msg3) for the random access procedure; or a Message 1 (Msg1) for the random access procedure.
[0183] In some embodiments, a set of resources of multiple sets of resources is associated with a spatial transmission mode indicating the one or more beams. In some embodiments, the signal comprises at least one of the following: a WUS; a physical random access channel (PRACH) transmission; a Message 1 (Msg1) for a random access procedure; or a Message 3 (Msg3) for the random access procedure.
[0184] In some embodiments, the apparatus may further include means for transmitting, to the terminal device, a random access response (RAR) message via the one or more beams associated with the set of resources.
[0185] In some embodiments, the apparatus further comprises means for performing other steps in some embodiments of the method 500. In some embodiments, the means comprises at least one processor and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the performance of the apparatus.
[0186] In some embodiments, an apparatus capable of performing any of the method 600 (for example, the network device) may comprise means for transmitting, to a terminal device, a wake up signal (WUS) configuration. The WUS configuration carries information on multiple sets of resources for transmitting a signal, and a set of resources of the multiple sets of resources is associated with one or more beams.
[0187] In some embodiments, a set of resources of the multiple sets of resources comprises at least one of the following: a set of preambles; a set of random access occasions (RO) ; or a set of physical random access channels (PRACH) .
[0188] In some embodiments, the signal comprises at least one of the following: a WUS; a physical random access channel (PRACH) transmission; a Message 1 (Msg1) for a random access procedure; or a Message 3 (Msg3) for the random access procedure.
[0189] In some embodiments, the apparatus further comprises means for performing other steps in some embodiments of the method 600. In some embodiments, the means comprises at least one processor and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the performance of the apparatus.
[0190] In some embodiments, an apparatus capable of performing any of the method 700 (for example, the terminal device) may comprise means for transmitting, to a network device, a signal in an operating frequency range; and means for receiving, from the network device, a control channel transmission for on-demand (OD) -system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0191] In some embodiments, the operating frequency range comprises: a Frequency Range (FR) 1; and an FR 2. In some embodiments, the signal is transmitted in FR1, and the means for receiving the control channel transmission may include: means for detecting the control channel transmission in one control channel monitoring occasion associated with the FR1.
[0192] In some embodiments, the signal is transmitted in FR2, and the means for receiving the control channel transmission may include: means for detecting the control channel transmission in more than one control channel monitoring occasion associated with the FR2.
[0193] In some embodiments, the signal comprises at least one of the following: a WUS; a physical random access channel (PRACH) transmission; a Message 1 (Msg1) for a random access procedure; or a Message 3 (Msg3) for the random access procedure.
[0194] In some embodiments, the apparatus further comprises means for performing other steps in some embodiments of the method 700. In some embodiments, the means comprises at least one processor and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the performance of the apparatus.
[0195] In some embodiments, an apparatus capable of performing any of the method 800 (for example, the network device) may comprise means for receiving, from a terminal device, a signal within an operating frequency range; and means for transmitting, to the terminal device 110, a control channel for on-demand (OD) -system information in one or more control channel monitoring occasions associated with the operating frequency range.
[0196] In some embodiments, the signal is transmitted within FR1, and the means for transmitting the control channel may include: means for transmitting the control channel in one control channel monitoring occasion associated with the FR1.
[0197] In some embodiments, the signal is transmitted within FR2, and the means for transmitting the control channel may include: means for transmitting the control channel in more than one control channel monitoring occasion associated with the FR2
[0198] In some embodiments, the signal comprises at least one of the following: a WUS; a physical random access channel (PRACH) transmission; a Message 1 (Msg1) for a random access procedure; or a Message 3 (Msg3) for the random access procedure.
[0199] In some embodiments, the apparatus further comprises means for performing other steps in some embodiments of the method 800. In some embodiments, the means comprises at least one processor and at least one memory including computer program code, the at least one memory and computer program code configured to, with the at least one processor, cause the performance of the apparatus.
[0200] FIG. 9 is a simplified block diagram of a device 900 that is suitable for implementing embodiments of the present disclosure. The device 900 may be provided to implement the communication device, for example the terminal device or the network device. As shown, the device 900 includes one or more processors 910, one or more memories 920 coupled to the processor 910, and one or more communication modules 940 coupled to the processor 910.
[0201] The communication modules 940 is for bidirectional communications. The communication modules 940 has at least one antenna to facilitate communication. The communication interface may represent any interface that is necessary for communication with other network elements.
[0202] The processor 910 may be of any type suitable to the local technical network and may include one or more of the following: general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples. The device 900 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
[0203] The memory 920 may include one or more non-volatile memories and one or more volatile memories. Examples of the non-volatile memories include, but are not limited to, a Read Only Memory (ROM) 924, an electrically programmable read only memory (EPROM) , a flash memory, a hard disk, a compact disc (CD) , a digital video disk (DVD) , and other magnetic storage and / or optical storage. Examples of the volatile memories include, but are not limited to, a random access memory (RAM) 922 and other volatile memories that will not last in the power-down duration.
[0204] A computer program 930 includes computer executable instructions that are executed by the associated processor 910. The program 730 may be stored in the ROM 924. The processor 910 may perform any suitable actions and processing by loading the program 930 into the RAM 922.
[0205] The embodiments of the present disclosure may be implemented by means of the program 930 so that the device 900 may perform any process of the disclosure as discussed with reference to FIGS. 2 to 8. The embodiments of the present disclosure may also be implemented by hardware or by a combination of software and hardware.
[0206] In some embodiments, the program 930 may be tangibly contained in a computer readable medium which may be included in the device 900 (such as in the memory 920) or other storage devices that are accessible by the device 900. The device 900 may load the program 930 from the computer readable medium to the RAM 922 for execution. The computer readable medium may include any types of tangible non-volatile storage, such as ROM, EPROM, a flash memory, a hard disk, CD, DVD, and the like. FIG. 10 shows an example of the computer readable medium 1000 in form of CD or DVD. The computer readable medium has the program 930 stored thereon.
[0207] Generally, various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representations, it is to be understood that the block, apparatus, system, technique or method described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
[0208] The present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium. The computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the method 400, 500, 600, 700, or 800 as described above with reference to Figs. 4-8. Generally, program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types. The functionality of the program modules may be combined or split between program modules as desired in various embodiments. Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
[0209] Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions / operations specified in the flowcharts and / or block diagrams to be implemented. The program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
[0210] In the context of the present disclosure, the computer program codes or related data may be carried by any suitable carrier to enable the device, apparatus or processor to perform various processes and operations as described above. Examples of the carrier include a signal, computer readable medium, and the like.
[0211] The computer readable medium may be a computer readable signal medium or a computer readable storage medium. A computer readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing. More specific examples of the computer readable storage medium would include an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (RAM) , a read-only memory (ROM) , an erasable programmable read-only memory (EPROM or Flash memory) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing. The term “non-transitory, ” as used herein, is a limitation of the medium itself (i.e., tangible, not a signal) as opposed to a limitation on data storage persistency (e.g., RAM vs. ROM) .
[0212] Further, while operations are depicted in a particular order, this should not be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. In certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are contained in the above discussions, these should not be construed as limitations on the scope of the present disclosure, but rather as descriptions of features that may be specific to particular embodiments. Certain features that are described in the context of separate embodiments may also be implemented in combination in a single embodiment. Conversely, various features that are described in the context of a single embodiment may also be implemented in multiple embodiments separately or in any suitable sub-combination.
[0213] Although the present disclosure has been described in languages specific to structural features and / or methodological acts, it is to be understood that the present disclosure defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.
Claims
1.A terminal device comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the terminal device at least to:transmit, to a network device, a signal using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information; andreceive, from the network device, the OD-system information via one or more beams associated with the set of resources.2.The terminal device of claim 1, wherein the terminal device is further caused to:receive a wake up signal (WUS) configuration,wherein the WUS configuration carries information on multiple sets of resources comprising the set of resources, and a set of resources of the multiple sets of resources is associated with one or more beams.3.The terminal device of claim 2, wherein a set of resources of the multiple sets of resources comprises at least one of the following:a set of preambles;a set of random access occasions (RO) ; ora set of physical random access channel (PRACH) resources.4.The terminal device of claim 2 or 3, wherein the multiple sets of resources comprise:a first set of resources associated with one beam; anda second set of resources associated with more than one beam.5.The terminal device of claim 4, wherein the terminal device is caused to transmit the signal by:determining a mobility status of the terminal device;selecting, based on the mobility status, the set of resources indicating whether more than one beam is requested for the OD-system information among the multiple sets of resources; andtransmitting the signal using at least one resource of the set of resources.6.The terminal device of claim 5, wherein the terminal device is caused to select the set of resources by:based on determining that the mobility status is at a first mobility level, determining that more than one beam is requested for the OD system information; andselecting, among the multiple sets of resources, the second set of resources associated with more than one beam as the set of resources for transmitting the signal.7.The terminal device of claim 5, wherein the terminal device is caused to select the set of resources by:based on determining that the mobility status is at a second mobility level, determining that one beam is requested for the OD system information; andselecting, among the multiple sets of resources, the first set of resources associated with the one beam as the set of resources for transmitting the signal.8.The terminal device of any of claims 4 to 7, wherein the one beam is associated with the signal, and the more than one beam comprises the one beam and at least one neighboring beam that is neighboring to the one beam.9.The terminal device of claim 8, wherein the terminal device is further caused to:transmit, to the network device, a measurement report related to one or more beams for determining the at least one neighboring beam.10.The terminal device of claim 9, wherein the measurement report is transmitted in at least one of the following:a Message A (MsgA) for a random access procedure;a Message 3 (Msg3) for the random access procedure; ora Message 1 (Msg1) for the random access procedure.11.The terminal device of claim 4, wherein the terminal device is further caused to:receive an indication of a difference threshold;determine a difference between a first received power associated with a first beam among a plurality of beams from the network device and the second received power associated with a second beam among the plurality of beams;select, based on the difference threshold and the difference, the set of resources indicating whether more than one beam is requested for the OD-system information among the multiple sets of resources; andtransmit the signal using at least one resource of the set of resources.12.The terminal device of claim 11, wherein:the first received power associated with the first beam is the highest received power among the plurality of beams, andthe second received power associated with the second beam is the second highest received power among the plurality of beams.13.The terminal device of claim 2, wherein a set of resources of the multiple sets of resources is associated with a spatial transmission mode indicating the one or more beams.14.The terminal device of claim 1, wherein the signal comprises at least one of the following:a WUS;a physical random access channel (PRACH) transmission;a Message 1 (Msg1) for a random access procedure; ora Message 3 (Msg3) for the random access procedure.15.The terminal device of claim 1, wherein the terminal device is further caused to:receive, from the network device, a random access response (RAR) message via the one or more beams associated with the set of resources.16.The terminal device of claim 15, wherein the terminal device is caused to receive the RAR message and OD-system information by at least one of the following:in a case that the set of resources is associated with one beam, monitoring the RAR message during a RAR reception window via the one beam, and monitoring the OD-system information during a system information reception window via the one beam; andin a case that the set of resources is associated with more than one beam, monitoring the RAR message during the RAR reception window via the more than one beam, and monitoring the OD-system information during the system information reception window via the more than one beam.17.A network device comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the network device at least to:receive, from a terminal device, a signal using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information; andtransmit, to the terminal device, the OD-system information via one or more beams associated with the set of resources.18.The network device of claim 17, wherein the network device is further caused to:transmit, to the terminal device, a wake up signal (WUS) configuration,wherein the WUS configuration carries information on multiple sets of resources comprising the set of resources, and a set of resources of the multiple sets of resources is associated with one or more beams.19.The network device of claim 18, wherein a set of resources of the multiple sets of resources comprises at least one of the following:a set of preambles;a set of random access occasions (RO) ; ora set of physical random access channel (PRACH) resources.20.The network device of claim 18, wherein the multiple sets of resources comprise:a first set of resources associated with one beam; anda second set of resources associated with more than one beam.21.The network device of any of claims 17 to 20, wherein the network device is caused to transmit the OD-system information by:based on that the set of resources is associated with more than one beam, determining that more than one beam is requested for the OD-system information; andtransmitting the OD-system information via the more than one beam.22.The network device of any of claims 17 to 20, wherein the network device is caused to transmit the OD-system information by:based on that the set of resources is associated with one beam, determining that more than one beam is not requested for the OD-system information; andtransmitting the OD-system information via the one beam.23.The network device of claim 20, wherein the one beam is associated with the signal, and the more than one beam comprises the one beam and at least one neighboring beam that is neighboring to the one beam.24.The network device of claim 23, wherein the network device is further caused to:receive, from the terminal device, a measurement report related to one or more beams;determine the at least one neighboring beam based on the measurement report.25.The network device of claim 24, wherein the measurement report is transmitted in at least one of the following:a Message A (MsgA) for a random access procedure;a Message 3 (Msg3) for the random access procedure; ora Message 1 (Msg1) for the random access procedure.26.The network device of claim 18, wherein a set of resources of multiple sets of resources is associated with a spatial transmission mode indicating the one or more beams.27.The network device of claim 17, wherein the network device is further caused to:transmit, to the terminal device, a difference threshold for determining the set of resources indicating whether more than one beam is requested for on demand (OD) -system information.28.The network device of claim 17, wherein the signal comprises at least one of the following:a WUS;a physical random access channel (PRACH) transmission;a Message 1 (Msg1) for a random access procedure; ora Message 3 (Msg3) for the random access procedure.29.The network device of claim 17, wherein the network device is further caused to:transmit, to the terminal device, a random access response (RAR) message via the one or more beams associated with the set of resources.30.A network device comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the network device at least to:transmit, to a terminal device, a wake up signal (WUS) configuration, wherein the WUS configuration carries information on multiple sets of resources for transmitting a signal, and a set of resources of the multiple sets of resources is associated with one or more beams.31.The network device of claim 30, wherein a set of resources of the multiple sets of resources comprises at least one of the following:a set of preambles;a set of random access occasions (RO) ; ora set of physical random access channels (PRACH) .32.The network device of claim 30, wherein the signal comprises at least one of the following:a WUS;a physical random access channel (PRACH) transmission;a Message 1 (Msg1) for a random access procedure; ora Message 3 (Msg3) for the random access procedure.33.The network device of claim 30, wherein the network device is further caused to:transmit, to the terminal device, a difference threshold for determining the set of resources indicating whether more than one beam is requested for on demand (OD) -system information.34.A terminal device comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the terminal device at least to:transmit, to a network device, a signal in an operating frequency range; andreceive, from the network device, a control channel transmission for on-demand (OD) -system information in one or more control channel monitoring occasions associated with the operating frequency range.35.The terminal device of claim 34, wherein the operating frequency range comprises:a Frequency Range (FR) 1; andan FR 2.36.The terminal device of claim 35, wherein the signal is transmitted in FR1, and the terminal device is caused to receive the control channel transmission by:detecting the control channel transmission in one control channel monitoring occasion associated with the FR1.37.The terminal device of claim 36, wherein the signal is transmitted in FR2, and the terminal device is caused to receive the control channel transmission by:detecting the control channel transmission in more than one control channel monitoring occasion associated with the FR2.38.The terminal device of claim 34, wherein the signal comprises at least one of the following:a WUS;a physical random access channel (PRACH) transmission;a Message 1 (Msg1) for a random access procedure; ora Message 3 (Msg3) for the random access procedure.39.A network device comprising:at least one processor; andat least one memory storing instructions that, when executed by the at least one processor, cause the network device at least to:receive, from a terminal device, a signal within an operating frequency range; andtransmit, to the terminal device, a control channel for on-demand (OD) -system information in one or more control channel monitoring occasions associated with the operating frequency range.40.The network device of claim 39, wherein the operating frequency range comprises:a Frequency Range (FR) 1; andan FR 2.41.The network device of claim 40, wherein the signal is transmitted within FR1, and the network device is caused to transmit the control channel by:transmitting the control channel in one control channel monitoring occasion associated with the FR1.42.The network device of claim 40, wherein the signal is transmitted within FR2, and the network device is caused to transmit the control channel by:transmitting the control channel in more than one control channel monitoring occasion associated with the FR2.43.The terminal device of claim 39, wherein the signal comprises at least one of the following:a WUS;a physical random access channel (PRACH) transmission;a Message 1 (Msg1) for a random access procedure; ora Message 3 (Msg3) for the random access procedure.44.A method comprising:transmitting, by a terminal device to a network device, a signal using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information; andreceiving, from the network device, the OD-system information via one or more beams associated with the set of resources.45.A method comprising:receiving, by a network device from a terminal device, a signal or channel using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information; andtransmitting, to the terminal device, the OD-system information via one or more beams associated with the set of resources.46.A method comprising:transmitting, by a network device to a terminal device, a wake up signal (WUS) configuration, wherein the WUS configuration carries information on multiple sets of resources for transmitting a signal, and a set of resources of the multiple sets of resources is associated with one or more beams.47.A method comprising:transmitting, by a terminal device to a network device, a signal in an operating frequency range; andreceive, from the network device, a control channel transmission for on-demand (OD) -system information in one or more control channel monitoring occasions associated with the operating frequency range.48.A method comprising:receiving, by a network device from a terminal device, a signal or channel within an operating frequency range; andtransmitting, to the terminal device, a control channel for on-demand (OD) -system information in one or more control channel monitoring occasions associated with the operating frequency range.49.An apparatus comprising:means for transmitting, to a network device, a signal using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information; andmeans for receiving, from the network device, the OD-system information via one or more beams associated with the set of resources.50.An apparatus comprising:means for receiving, from a terminal device, a signal or channel using a set of resources which indicates whether more than one beam is requested for on demand (OD) -system information; andmeans for transmitting, to the terminal device, the OD-system information via one or more beams associated with the set of resources.51.An apparatus comprising:means for transmitting, to a terminal device, a wake up signal (WUS) configuration, wherein the WUS configuration carries information on multiple sets of resources for transmitting a signal, and a set of resources of the multiple sets of resources is associated with one or more beams.52.An apparatus comprising:means for transmitting, to a network device, a signal in an operating frequency range; andmeans for receiving, from the network device, a control channel transmission for on-demand (OD) -system information in one or more control channel monitoring occasions associated with the operating frequency range.53.An apparatus comprising:means for receiving, by a network device from a terminal device, a signal or channel within an operating frequency range; andmeans for transmitting, to the terminal device, a control channel for on-demand (OD) -system information in one or more control channel monitoring occasions associated with the operating frequency range.54.A computer readable medium comprising program instructions stored thereon for performing at least the method of any of claims 44 to 48.
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