Methods for transmission of uplink trigger signal in mobile communications
The proposed method addresses the undefined transmission of UL trigger signals in NES scenarios by using synchronization signals to determine and transmit UL trigger signals, enhancing energy efficiency in NR mobile communications.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- MEDIATEK INC
- Filing Date
- 2025-12-12
- Publication Date
- 2026-06-18
AI Technical Summary
In Network Energy Saving (NES) scenarios of New Radio (NR) mobile communications, the transmission of Uplink (UL) trigger signals between User Equipment (UE) and cells or Transmission Reception Points (TRPs) is undefined, particularly when an NES cell operates independently, necessitating a need for proper schemes to transmit UL trigger signals.
A method involving an apparatus that receives a synchronization signal indicating the cell's operating mode and UL trigger signal configuration, allowing the UE to determine and transmit a UL trigger signal, and subsequently receive a System Information Block (SIB) based on this configuration.
Enables accurate acquisition of system information and improves energy-efficient network operation by coordinating UE and network node operations to configure and transmit UL trigger signals effectively.
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Figure CN2025142137_18062026_PF_FP_ABST
Abstract
Description
METHODS FOR TRANSMISSION OF UPLINK TRIGGER SIGNAL IN MOBILE COMMUNICATIONSCROSS REFERENCE TO RELATED PATENT APPLICATION (S)
[0001] The present disclosure is part of a non-provisional application claiming the priority benefit of U.S. Patent Application No. 63 / 733,492, filed on 13 December 2024, the content of which herein being incorporated by reference in its entirety.TECHNICAL FIELD
[0002] The present disclosure is generally related to mobile communications and, more particularly, to transmission of Uplink (UL) trigger signal with respect to apparatus in mobile communications.BACKGROUND
[0003] Unless otherwise indicated herein, approaches described in this section are not prior art to the claims listed below and are not admitted as prior art by inclusion in this section.
[0004] In New Radio (NR) and next-generation mobile communications, technologies of Network Energy Saving (NES) are introduced. In particular, as higher data throughput and lower latency are pursued in wireless cellular networks, overall energy consumption has significantly increased. Such an increase in energy usage not only raises operational costs for network operators but also diminishes the benefits that next-generation wireless standards are intended to provide. Accordingly, various solutions have been proposed in the Third Generation Partnership Project (3GPP) to address NES, aiming to substantially reduce network energy consumption and achieve more environmentally sustainable wireless communications.
[0005] In some NES scenarios, the concept of an anchor cell or Transmission Reception Point (TRP) assisting another cell / TRP that operates in an NES mode (i.e., an NES cell / TRP or capacity cell / TRP) has been proposed. When traffic in a particular cell / TRP is low, the network may relocate User Equipment (UE (s) ) from that cell / TRP to another cell / TRP (i.e., an anchor cell / TRP) and switch the former into the NES mode. When the UE subsequently has uplink data to transmit and needs to wake up a nearby NES cell / TRP, the UE may transmit a signal toward the anchor cell / TRP or toward the NES cell / TRP. Upon detecting the signal, the corresponding NES cell / TRP may be woken, allowing the UE (s) to access the awakened NES cell / TRP for data transmission.
[0006] However, in some NES scenarios, an NES cell / TRP may operate independently without assistance from another cell or TRP (e.g., an anchor cell / TRP) , which may be referred to as a standalone operation. In such cases, the operation of providing an Uplink (UL) trigger signal (e.g., a UL Wake-Up Signal (UL-WUS) ) configuration to the UE and the operation of determining whether the NES cell / TRP operates in an NES mode that requires an on-demand System Information Block 1 (SIB1) transmission, or in a normal mode where SIB1 is broadcast regularly and periodically to reduce signaling overhead, remain undefined.
[0007] Accordingly, how to transmit the UL trigger signal between the UE and the cell / TRP becomes an important issue in the newly developed wireless communication network. Therefore, there is a need to provide proper schemes to transmit the UL trigger signal between the UE and the cell / TRP.SUMMARY
[0008] The following summary is illustrative only and is not intended to be limiting in any way. That is, the following summary is provided to introduce concepts, highlights, benefits and advantages of the novel and non-obvious techniques described herein. Select implementations are further described below in the detailed description. Thus, the following summary is not intended to identify essential features of the claimed subject matter, nor is it intended for use in determining the scope of the claimed subject matter.
[0009] An objective of the present disclosure is to propose solutions or schemes that address the aforementioned issues pertaining to transmission of Uplink (UL) trigger signal with respect to apparatus in mobile communications.
[0010] In one aspect, a method may involve an apparatus receiving a synchronization signal from a cell. The synchronization signal may indicate at least one of a cell operating mode of the cell and an availability of UL trigger signal configuration of the cell. The cell operating mode may include a Network Energy Saving (NES) mode. The method may further involve the apparatus determining a UL trigger signal configuration based on the availability of UL trigger signal configuration. The method may further involve the apparatus transmitting a UL trigger signal to the cell. The method may further involve the apparatus receiving a System Information Block (SIB) from the cell based on the UL trigger signal.
[0011] In one aspect, a method may involve an apparatus transmitting a synchronization signal to a User Equipment (UE) for determining a UL trigger signal configuration. The synchronization signal may indicate at least one of a cell operating mode of a cell and an availability of UL trigger signal configuration of the cell. The cell operating mode may include a NES. The method may further involve the apparatus receiving a UL trigger signal from the UE. The method may further involve the apparatus transmitting a SIB to the UE based on the UL trigger signal.
[0012] It is noteworthy that, although description provided herein may be in the context of certain radio access technologies, networks and network topologies such as Long-Term Evolution (LTE) , LTE-Advanced, LTE-Advanced Pro, 5th Generation (5G) , New Radio (NR) , Internet-of-Things (IoT) and Narrow Band Internet of Things (NB-IoT) , Industrial Internet of Things (IIoT) , and 6th Generation (6G) , the proposed concepts, schemes and any variation (s) / derivative (s) thereof may be implemented in, for and by other types of radio access technologies, networks and network topologies. Thus, the scope of the present disclosure is not limited to the examples described herein.BRIEF DESCRIPTION OF THE DRAWINGS
[0013] The accompanying drawings are included to provide a further understanding of the disclosure and are incorporated in and constitute a part of the present disclosure. The drawings illustrate implementations of the disclosure and, together with the description, serve to explain the principles of the disclosure. It is appreciable that the drawings are not necessarily in scale as some components may be shown to be out of proportion than the size in actual implementation in order to clearly illustrate the concept of the present disclosure.
[0014] FIG. 1 is a diagram depicting an example scenario under schemes in accordance with implementations of the present disclosure.
[0015] FIG. 2 is a diagram depicting an example scenario under schemes in accordance with implementations of the present disclosure.
[0016] FIG. 3 is a diagram depicting an example scenario under schemes in accordance with implementations of the present disclosure.
[0017] FIG. 4 is a diagram depicting an example scenario under schemes in accordance with implementations of the present disclosure.
[0018] FIG. 5 is a diagram depicting an example scenario under schemes in accordance with implementations of the present disclosure.
[0019] FIG. 6 is a diagram depicting an example scenario under schemes in accordance with implementations of the present disclosure.
[0020] FIG. 7 is a diagram depicting an example scenario under schemes in accordance with implementations of the present disclosure.
[0021] FIG. 8 is a diagram depicting an example scenario under schemes in accordance with implementations of the present disclosure.
[0022] FIG. 9 is a diagram depicting an example scenario under schemes in accordance with implementations of the present disclosure.
[0023] FIG. 10 is a block diagram of an example communication system in accordance with an implementation of the present disclosure.
[0024] FIG. 11 is a flowchart of an example process in accordance with an implementation of the present disclosure.
[0025] FIG. 12 is a flowchart of an example process in accordance with an implementation of the present disclosure. DETAILED DESCRIPTION OF PREFERRED IMPLEMENTATIONS
[0026] Detailed embodiments and implementations of the claimed subject matters are disclosed herein. However, it shall be understood that the disclosed embodiments and implementations are merely illustrative of the claimed subject matters which may be embodied in various forms. The present disclosure may, however, be embodied in many different forms and should not be construed as limited to the exemplary embodiments and implementations set forth herein. Rather, these exemplary embodiments and implementations are provided so that description of the present disclosure is thorough and complete and will fully convey the scope of the present disclosure to those skilled in the art. In the description below, details of well-known features and techniques may be omitted to avoid unnecessarily obscuring the presented embodiments and implementations. Overview
[0027] Implementations in accordance with the present disclosure relate to various techniques, methods, schemes and / or solutions pertaining to transmission of Uplink (UL) trigger signal with respect to apparatus in mobile communications. According to the present disclosure, a number of possible solutions may be implemented separately or jointly. That is, although these possible solutions may be described below separately, two or more of these possible solutions may be implemented in one combination or another.
[0028] Regarding the present disclosure, a network node may transmit a synchronization signal to a User Equipment (UE) . The synchronization signal may indicate at least one of: (1) a cell operating mode of a cell, and (2) an availability of UL trigger signal configuration of the cell. The cell operating mode may include a Network Energy Saving (NES) mode.
[0029] Then, the UE may receive the synchronization signal from a cell associated with the network node. The UE may determine a UL trigger signal configuration based on the availability of UL trigger signal configuration and transmit a UL trigger signal to the cell based on the UL trigger signal configuration. The network node may receive the UL trigger signal transmitted based on the UL trigger signal configuration from the UE and transmit a System Information Block (SIB) to the UE based on the UL trigger signal. The UE may receive the SIB from the cell based on the UL trigger signal.
[0030] Accordingly, the UE and the network node may cooperate to configure and transmit the UL trigger signal, and the UE may determine an operation mode of the cell, especially a NES cell, associated with the network node. Through coordinated operations between the UE and the network node, the foregoing issues are effectively addressed, thereby enabling accurate acquisition of system information and achieving improved energy-efficient operation of the network.
[0031] FIG. 1 illustrates an example scenario 100 under schemes in accordance with implementations of the present disclosure. Scenario 100 involves at least one network node and a UE, which may be a part of a wireless communication network (e.g., an LTE network, a 5G / NR network, an IoT network or a 6G network) . Scenario 100 illustrates the current network framework. The UE may connect to the network side. The network side may comprise one or more network nodes.
[0032] It should be noted that one network node may be associated with one or more cells. In some cases, one network node may be associated with one anchor cell or one capacity cell. In some cases, one network node may be associated with anchor cells and / or capacity cells. In addition, one network node may include one Transmission Reception Point (TRP) . In some cases, one network node may include one anchor TRP or one capacity TRP.
[0033] For ease of understanding, the term “cell” is used herein to refer to either a cell or a TRP. This convention is for convenience only and is not intended to limit the scope of the present disclosure.
[0034] In some embodiments, the network node may be associated with a capacity cell that may operate in a normal mode or an NES mode, which is referred to hereinafter as an NES cell. The network node may transmit a synchronization signal to the UE. In some cases, the synchronization signal may include a Primary Synchronization Signal (PSS) , a Secondary Synchronization Signal (SSS) , a Physical Broadcast Channel (PBCH) , a PBCH Demodulation Reference Signal (DMRS) , or any combination thereof.
[0035] In some implementations, the synchronization signal may indicate at least one of: (1) a cell operating mode of a NES cell, and (2) an availability of UL trigger signal configuration of the NES cell. In particular, the cell operating mode may include a NES mode or a normal mode. When the NES cell operates in the NES mode, the synchronization signal may indicate the NES mode. When the NES cell operates in the normal mode, the synchronization signal may indicate the normal mode.
[0036] Further, the availability of UL trigger signal configuration may include a presence of UL trigger signal configuration or an applicability of UL trigger signal configuration. In some cases, when the network node operates in the NES mode, the synchronization signal indicating the presence of UL trigger signal configuration may inform the UE that a UL trigger signal configuration is to be transmitted from the network to the UE. In some cases, when the network node operates in the NES mode, the synchronization signal indicating the applicability of UL trigger signal configuration may instruct the UE to apply a pre-defined / pre-configured UL trigger signal configuration when needed.
[0037] Then, the UE may receive the synchronization signal from the NES cell associated with the network node. The UE may determine a UL trigger signal configuration based on the availability of UL trigger signal configuration and transmit a UL trigger signal (e.g., a UL-Wake Up Signal (UL-WUS) ) to the NES cell based on the UL trigger signal configuration. The network node may receive the UL trigger signal transmitted based on the UL trigger signal configuration from the UE and transmit a SIB (e.g., SIB1 defined in 3GPP) to the UE based on the UL trigger signal. The UE may receive the SIB transmitted based on the UL trigger signal from the NES cell .
[0038] FIG. 2 illustrates an example scenario 200 under schemes in accordance with implementations of the present disclosure. For example, the network node transmits a synchronization signal to the UE. The synchronization signal indicates that: (1) a cell operating mode of the NES cell associated with the network node is a NES mode, and (2) a presence of UL trigger signal configuration.
[0039] After receiving the synchronization signal, the UE determines that: (1) the NES cell operates in the NES mode, and / or (2) there is a UL trigger signal configuration to be transmitted. The network node transmits the UL trigger signal configuration to the UE. After receiving the UL trigger signal configuration, the UE transmits a UL trigger signal to the NES cell based on the UL trigger signal configuration.
[0040] Then, the network node transmits a SIB1 (e.g., on-demand SIB1) to the UE. The SIB1 includes Random Access Channel (RACH) configuration. After receiving the SIB1, the UE transmits Physical Random Access Channel (PRACH) to the network node to initiate a random access procedure.
[0041] FIG. 3 illustrates an example scenario 300 under schemes in accordance with implementations of the present disclosure. For example, the network node transmits a synchronization signal to the UE. The synchronization signal indicates that: (1) a cell operating mode of the NES cell associated with the network node is a NES mode, and (2) an applicability of UL trigger signal configuration.
[0042] After receiving the synchronization signal, the UE determines that: (1) the NES cell operates in the NES mode, and (2) a pre-defined / pre-configured UL trigger signal configuration to be applied. After applying the UL trigger signal configuration, the UE transmits a UL trigger signal to the NES cell based on the UL trigger signal configuration.
[0043] Then, the network node transmits a SIB1 (e.g., on-demand SIB1) to the UE. The SIB1 includes RACH configuration. After receiving the SIB1, the UE transmits PRACH to the network node to initiate a random access procedure.
[0044] In some implementations, the synchronization signal may include a PBCH, and the UL trigger signal configuration may be carried by the PBCH. In particular, the network node may transmit the synchronization signal to the UE. After receiving the synchronization signal, the UE may determine: (1) a cell operating mode of a NES cell associated with the network node, and / or (2) an availability of UL trigger signal configuration of the NES cell. The UE may determine a complete UL trigger signal configuration from the PBCH and transmit a UL trigger signal to the NES cell. The UE may receive an on-demand SIB1 and transmit a PRACH to the NES cell based on the SIB1 to initiate a random access procedure.
[0045] In some cases, when the UL trigger signal configuration is sufficiently compact, it may be fully carried (i.e., indicated) by the PBCH. In some cases, one or more UL trigger signal configurations may be pre-defined, and an index indicating which configuration is to be applied may be carried (i.e., indicated) by the PBCH.
[0046] FIG. 4 illustrates an example scenario 400 under schemes in accordance with implementations of the present disclosure. For example, from the UE’s perspective, the UE receives a synchronization signal. The synchronization signal includes a PBCH. The UE determines a NES mode of a NES cell associated with the network node and an availability of UL trigger signal configuration based on the synchronization signal. The UE determines a UL trigger signal configuration from the PBCH and transmits a UL trigger signal to wake up the NES cell based on the UL trigger signal configuration. The UE receives an on-demand SIB1 from the NES cell and transmits a PRACH to the NES cell based on the SIB1 to initiate a random access procedure.
[0047] It should be noted that, in this example, one or more UL trigger signal configurations may be pre-defined (as depicted in the dotted-line box) . The determination of the UL trigger signal configuration from the PBCH may correspond to determining which one of the pre-defined UL trigger signal configurations is indicated by the PBCH.
[0048] In some implementations, the synchronization signal may include a PBCH, and the UL trigger signal configuration may be carried by a Physical Downlink Shared Channel (PDSCH) while a Physical Downlink Control Channel (PDCCH) for scheduling the PDSCH carrying the UL trigger signal configuration may be carried (i.e., indicated) by the PBCH. In particular, the network node may transmit the synchronization signal to the UE. After receiving the synchronization signal, the UE may determine: (1) a cell operating mode of a NES cell associated with the network node, and / or (2) an availability of UL trigger signal configuration of the NES cell.
[0049] In some cases, the UE may determine at least part of a PDCCH configuration (i.e., a partial or complete PDCCH configuration) of a PDCCH from the PBCH. The PDCCH may be used for scheduling a PDSCH. In some cases, the UE may determine the at least part of a PDCCH configuration of the PDCCH by at least one of pre-defined configurations, pre-defined parameters and pre-defined rules.
[0050] The UE may monitor the PDCCH and receive the PDSCH carrying a UL trigger signal configuration. The UE may transmit a UL trigger signal to the NES cell based on the UL trigger signal configuration. The UE may receive an on-demand SIB1 and transmit a PRACH to the NES cell based on the SIB1 to initiate a random access procedure.
[0051] FIG. 5 illustrates an example scenario 500 under schemes in accordance with implementations of the present disclosure. For example, from the UE’s perspective, the UE receives a synchronization signal. The synchronization signal includes a PBCH. The UE determines a NES mode of a NES cell associated with the network node and an availability of UL trigger signal configuration based on the synchronization signal. The UE determines a PDCCH configuration of a PDCCH from the PBCH. The PDCCH schedules a PDSCH. The UE monitors the PDCCH with a Radio Network Temporary Identifier (RNTI) and receives the PDSCH carrying a UL trigger signal configuration. The UE transmits a UL trigger signal to wake up the NES cell based on the UL trigger signal configuration. The UE receives an on-demand SIB1 from the NES cell and transmits a PRACH to the NES cell based on the SIB1 to initiate a random access procedure.
[0052] It should be noted that, in this example, the RNTI may be pre-defined (as depicted in the dotted-line box) . The PDCCH may be scrambled using the pre-configured RNTI. The PDSCH scheduled by the PDCCH may carry the UL trigger signal configuration, which may be referred to as SIB0 (i.e., another SIB prior to SIB1) .
[0053] In some implementations, the synchronization signal may include a PBCH, and at least one part of the UL trigger signal configuration may be carried by the PBCH. In particular, the network node may transmit the synchronization signal to the UE. After receiving the synchronization signal, the UE may determine: (1) a cell operating mode of a NES cell associated with the network node, and / or (2) an availability of UL trigger signal configuration of the NES cell.
[0054] In addition, the UE may determine: (1) the at least one part of the UL trigger signal configuration indicated by the PBCH, and (2) where to receive remaining part of the UL trigger signal configuration based on the PBCH. Then, the UE may receive the remaining part of the UL trigger signal configuration based on the PBCH. After obtaining the complete UL trigger signal configuration, the UE may transmit a UL trigger signal to the NES cell. The UE may receive an on-demand SIB1 and transmit a PRACH to the NES cell based on the SIB1 to initiate a random access procedure.
[0055] FIG. 6 illustrates an example scenario 600 under schemes in accordance with implementations of the present disclosure. For example, from the UE’s perspective, the UE receives a synchronization signal. The synchronization signal includes a PBCH. The UE determines a NES mode of a NES cell associated with the network node and an availability of UL trigger signal configuration based on the synchronization signal. The UE determines partial UL trigger signal configuration from the PBCH and where to receive remaining UL trigger signal configuration based on the PBCH. The UE receives the remaining UL trigger signal configuration based on the PBCH. The UE transmits a UL trigger signal to wake up the NES cell based on the complete UL trigger signal configuration. The UE receives an on-demand SIB1 from the NES cell and transmits a PRACH to the NES cell based on the SIB1 to initiate a random access procedure.
[0056] FIG. 7 illustrates an example scenario 700 under schemes in accordance with implementations of the present disclosure. For example, from the UE’s perspective, the UE receives a synchronization signal including a PBCH from the NES cell. The UE determines whether the NES cell operates in a normal mode or an NES mode based on the synchronization signal.
[0057] When the synchronization signal indicates that the NES cell operates in the normal mode, the UE obtains a PDCCH configuration from the PBCH. The PDCCH configuration corresponds to a PDCCH scheduling a PDSCH. The UE receives a SIB1 via the PDSCH and obtains RACH configuration from the SIB1. The UE transmits a PRACH to the NES cell based on the RACH configuration to initiate a random access procedure.
[0058] When the synchronization signal indicates that the NES cell operates in the NES mode, the UE obtains a PDCCH configuration from the PBCH. The PDCCH configuration corresponds to a PDCCH scheduling a PDSCH. The UE receives a SIB0 (i.e., a SIB prior to SIB1) via the PDSCH and obtains a UL trigger signal configuration from the SIB0. The UE transmits a UL trigger signal to wake up the NES cell based on the UL trigger signal configuration. The UE receives a SIB1 and obtains RACH configuration from the SIB1. The UE transmits a PRACH to the NES cell based on the RACH configuration to initiate a random access procedure.
[0059] It should be noted that the PDCCH configuration for receiving the SIB0 that carries UL trigger signal configuration is carried by the PBCH. Further, some fields for SIB1 associated PDCCH configuration in the normal mode may be reused for SIB0 associated PDCCH configuration in the NES mode.
[0060] FIG. 8 illustrates an example scenario 800 under schemes in accordance with implementations of the present disclosure. For example, from the UE’s perspective, the UE receives a synchronization signal including a PBCH from the NES cell. The UE determines whether the NES cell operates in a normal mode or an NES mode based on the synchronization signal.
[0061] When the synchronization signal indicates that the NES cell operates in the normal mode, the UE obtains a PDCCH configuration from the PBCH. The PDCCH configuration corresponds to a PDCCH scheduling a PDSCH. The UE receives a SIB1 via the PDSCH and obtains RACH configuration from the SIB1. The UE transmits a PRACH to the NES cell based on the RACH configuration to initiate a random access procedure.
[0062] When the synchronization signal indicates that the NES cell operates in the NES mode, the UE obtains partial SIB0 configuration from the Master Information Block (MIB) of the PBCH. The UE obtains remaining SIB0 configuration carried by the PBCH. The UE receives a SIB0 based on the SIB0 configuration and obtains a UL trigger signal configuration from the SIB0. The UE transmits a UL trigger signal to wake up the NES cell based on the UL trigger signal configuration. The UE receives a SIB1 and obtains RACH configuration from the SIB1. The UE transmits a PRACH to the NES cell based on the RACH configuration to initiate a random access procedure.
[0063] It should be noted that the PDCCH configuration for receiving the SIB0 that carries UL trigger signal configuration is carried by the PBCH. Further, some fields for SIB1 associated PDCCH configuration in the normal mode may be reused for SIB0 associated PDCCH configuration in the NES mode.
[0064] FIG. 9 illustrates an example scenario 900 under schemes in accordance with implementations of the present disclosure. For example, from the UE’s perspective, the UE receives a synchronization signal including a PBCH from the NES cell. The UE determines whether the NES cell operates in a normal mode or an NES mode based on the synchronization signal.
[0065] When the synchronization signal indicates that the NES cell operates in the normal mode, the UE obtains a PDCCH configuration from the PBCH. The PDCCH configuration corresponds to a PDCCH scheduling a PDSCH. The UE receives a SIB1 via the PDSCH and obtains RACH configuration from the SIB1. The UE transmits a PRACH to the NES cell based on the RACH configuration to initiate a random access procedure.
[0066] When the synchronization signal indicates that the NES cell operates in the NES mode, the UE obtains a PDCCH configuration from the PBCH. The PDCCH configuration corresponds to a PDCCH scheduling a PDSCH. The UE receives a SIB0 (i.e., a SIB prior to SIB1) via the PDCCH or the PDSCH and obtains a UL trigger signal configuration from the SIB0. The UE transmits a UL trigger signal to wake up the NES cell based on the UL trigger signal configuration. The UE receives a SIB1 and obtains RACH configuration from the SIB1. The UE transmits a PRACH to the NES cell based on the RACH configuration to initiate a random access procedure.
[0067] It should be noted that, depending on the indicated operation mode, the PBCH carries different information and hence is interpreted differently. When the synchronization signal indicates that the NES cell operates in the NES mode, essential information is carried in the PBCH, and the synchronization signal in the NES mode may be referred to as an “essential Synchronization Signal Block (eSSB) ” . When the synchronization signal indicates that the NES cell operates in the normal mode, the PBCH carries information for UE to receive the SIB1, and the synchronization signal in the normal mode may be referred to as “normal Synchronization Signal Block (nSSB) ” . In addition, the essential information carried in an eSSB may include a SIB0 including the UL trigger signal configuration, when the UL trigger signal configuration is sufficiently compact.
[0068] In some implementations, a configuration in a PBCH may be used to indicate at least one part of a PDCCH configuration for scheduling a PDSCH carrying the UL trigger signal configuration. The UL trigger signal configuration transmitted to the UE may include another PDCCH configuration for scheduling another PDSCH transmitting SIB1. In other words, the PBCH may provide information that assists the UE in determining how to receive the PDCCH used to schedule the PDSCH, including the UL trigger signal configuration. Furthermore, the UL trigger signal configuration may include information that enables the UE to identify another PDCCH used to schedule a subsequent PDSCH that carries the SIB1. Illustrative Implementations
[0069] FIG. 10 illustrates an example communication system 1000 having an example communication apparatus 1010 and an example network apparatus 1020 in accordance with an implementation of the present disclosure. Each of communication apparatus 1010 and network apparatus 1020 may perform various functions to implement schemes, techniques, processes and methods described herein pertaining to transmission of UL trigger signal with respect to UE and network apparatus in mobile communications, including scenarios / schemes described above as well as processes 1100 and 1200 described below.
[0070] Communication apparatus 1010 may be a part of an electronic apparatus, which may be a UE such as a portable or mobile apparatus, a wearable apparatus, a wireless communication apparatus or a computing apparatus. For instance, communication apparatus 1010 may be implemented in a smartphone, a smartwatch, a personal digital assistant, a digital camera, or a computing equipment such as a tablet computer, a laptop computer or a notebook computer. Communication apparatus 1010 may also be a part of a machine type apparatus, which may be an IoT, NB-IoT, or IIoT apparatus such as an immobile or a stationary apparatus, a home apparatus, a wire communication apparatus or a computing apparatus. For instance, communication apparatus 1010 may be implemented in a smart thermostat, a smart fridge, a smart door lock, a wireless speaker or a home control center. Alternatively, communication apparatus 1010 may be implemented in the form of one or more integrated-circuit (IC) chips such as, for example and without limitation, one or more single-core processors, one or more multi-core processors, one or more reduced-instruction set computing (RISC) processors, or one or more complex-instruction-set-computing (CISC) processors. Communication apparatus 1010 may include at least some of those components shown in FIG. 10 such as a processor 1012, for example. Communication apparatus 1010 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and / or user interface device) , and, thus, such component (s) of communication apparatus 1010 are neither shown in FIG. 10 nor described below in the interest of simplicity and brevity.
[0071] Network apparatus 1020 may be a part of a network apparatus, which may be a network node such as a satellite, a base station, a small cell, a router or a gateway. For instance, network apparatus 1020 may be implemented in an eNodeB in an LTE network, in a gNB in a 5G / NR, IoT, NB-IoT or IIoT network or in a satellite or base station in a 6G network. Alternatively, network apparatus 1020 may be implemented in the form of one or more IC chips such as, for example and without limitation, one or more single-core processors, one or more multi-core processors, or one or more RISC or CISC processors. Network apparatus 1020 may include at least some of those components shown in FIG. 10 such as a processor 1022, for example. Network apparatus 1020 may further include one or more other components not pertinent to the proposed scheme of the present disclosure (e.g., internal power supply, display device and / or user interface device) , and, thus, such component (s) of network apparatus 1020 are neither shown in FIG. 10 nor described below in the interest of simplicity and brevity.
[0072] In one aspect, each of processor 1012 and processor 1022 may be implemented in the form of one or more single-core processors, one or more multi-core processors, or one or more CISC processors. That is, even though a singular term “a processor” is used herein to refer to processor 1012 and processor 1022, each of processor 1012 and processor 1022 may include multiple processors in some implementations and a single processor in other implementations in accordance with the present disclosure. In another aspect, each of processor 1012 and processor 1022 may be implemented in the form of hardware (and, optionally, firmware) with electronic components including, for example and without limitation, one or more transistors, one or more diodes, one or more capacitors, one or more resistors, one or more inductors, one or more memristors and / or one or more varactors that are configured and arranged to achieve specific purposes in accordance with the present disclosure. In other words, in at least some implementations, each of processor 1012 and processor 1022 is a special-purpose machine specifically designed, arranged and configured to perform specific tasks including transmission of UL trigger signal in a device (e.g., as represented by communication apparatus 1010) and a network (e.g., as represented by network apparatus 1020) in accordance with various implementations of the present disclosure.
[0073] In some implementations, communication apparatus 1010 may also include a transceiver 1016 coupled to processor 1012 and capable of wirelessly transmitting and receiving data. In other words, processor 1012 may transceive the data such as configuration, message, signal, information, indicator, etc. via transceiver 1016. In some implementations, communication apparatus 1010 may further include a memory 1014 coupled to processor 1012 and capable of being accessed by processor 1012 and storing data therein. In some implementations, network apparatus 1020 may also include a transceiver 1026 coupled to processor 1022 and capable of wirelessly transmitting and receiving data. In other words, processor 1022 may transceive the data such as configuration, message, signal, information, indicator, etc. via transceiver 1026. In some implementations, network apparatus 1020 may further include a memory 1024 coupled to processor 1022 and capable of being accessed by processor 1022 and storing data therein. Accordingly, communication apparatus 1010 and network apparatus 1020 may wirelessly communicate with each other via transceiver 1016 and transceiver 1026, respectively. To aid better understanding, the following description of the operations, functionalities and capabilities of each of communication apparatus 1010 and network apparatus 1020 is provided in the context of a mobile communication environment in which communication apparatus 1010 is implemented in or as a communication apparatus or a UE and network apparatus 1020 is implemented in or as a network node of a communication network.
[0074] In some implementations, each of memory 1014 and memory 1024 may include a type of random-access memory (RAM) such as dynamic RAM (DRAM) , static RAM (SRAM) , thyristor RAM (T-RAM) and / or zero-capacitor RAM (Z-RAM) . Alternatively, or additionally, each of memory 1014 and memory 1024 may include a type of read-only memory (ROM) such as mask ROM, programmable ROM (PROM) , erasable programmable ROM (EPROM) and / or electrically erasable programmable ROM (EEPROM) . Alternatively, or additionally, each of memory 1014 and memory 1024 may include a type of non-volatile random-access memory (NVRAM) such as flash memory, solid-state memory, ferroelectric RAM (FeRAM) , magnetoresistive RAM (MRAM) and / or phase-change memory. Illustrative Processes
[0075] FIG. 11 illustrates an example process 1100 in accordance with an implementation of the present disclosure. Process 1100 may be an example implementation of above scenarios / schemes, whether partially or completely, with respect to transmission of UL trigger signal of the present disclosure. Process 1100 may represent an aspect of implementation of features of communication apparatus 1010. Process 1100 may include one or more operations, actions, or functions as illustrated by one or more of blocks 1110 to 1140. Although illustrated as discrete blocks, various blocks of process 1100 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of process 1100 may be executed in the order shown in FIG. 11 or, alternatively, in a different order. Process 1100 may be implemented by communication apparatus 1010 or any suitable UE or machine type devices. Solely for illustrative purposes and without limitation, process 1100 is described below in the context of communication apparatus 1010. Process 1100 may begin at block 1110.
[0076] At block 1110, process 1100 may involve processor 1012 of communication apparatus 1010 receiving a synchronization signal from a cell. The synchronization signal may indicate at least one of a cell operating mode of the cell and an availability of UL trigger signal configuration of the cell. The cell operating mode may include an NES mode. Process 1100 may proceed from block 1110 to block 1120.
[0077] At block 1120, process 1100 may involve processor 1012 of communication apparatus 1010 determining a UL trigger signal configuration based on the availability of UL trigger signal configuration. Process 1100 may proceed from block 1120 to block 1130.
[0078] At block 1130, process 1100 may involve processor 1012 of communication apparatus 1010 transmitting a UL trigger signal to the cell based on the UL trigger signal configuration. Process 1100 may proceed from block 1130 to block 1140.
[0079] At block 1140, process 1100 may involve processor 1012 of communication apparatus 1010 receiving a SIB from the cell based on the UL trigger signal.
[0080] In some implementations, the UL trigger signal configuration may be received from the cell or be pre-configured.
[0081] In some implementations, the synchronization signal may include a PBCH, and at least one part of the UL trigger signal configuration may be carried by the PBCH.
[0082] In some implementations, the UL trigger signal configuration may be carried by a PDSCH.
[0083] In some implementations, the UL trigger signal configuration may be carried by another SIB.
[0084] In some implementations, a PDCCH scheduling the PDSCH may be scrambled by a pre-defined RNTI.
[0085] In some implementations, the synchronization signal may include a PBCH, and at least one part of a PDCCH configuration of a PDCCH for scheduling the PDSCH may be carried in the PBCH.
[0086] In some implementations, a PDCCH configuration of a PDCCH for scheduling the PDSCH may be determined by at least one of a pre-defined configuration, a pre-defined parameter and a pre-defined rule.
[0087] In some implementations, a configuration in the PBCH may be used to indicate at least one part of a PDCCH configuration for scheduling a PDSCH carrying the UL trigger signal configuration.
[0088] In some implementations, the UL trigger signal configuration may include another PDCCH configuration for scheduling another PDSCH transmitting the SIB.
[0089] FIG. 12 illustrates an example process 1200 in accordance with an implementation of the present disclosure. Process 1200 may be an example implementation of above scenarios / schemes, whether partially or completely, with respect to transmission of UL trigger signal of the present disclosure. Process 1200 may represent an aspect of implementation of features of network apparatus 1020. Process 1200 may include one or more operations, actions, or functions as illustrated by one or more of blocks 1210 to 1230. Although illustrated as discrete blocks, various blocks of process 1200 may be divided into additional blocks, combined into fewer blocks, or eliminated, depending on the desired implementation. Moreover, the blocks of process 1200 may be executed in the order shown in FIG. 12 or, alternatively, in a different order. Process 1200 may be implemented by network apparatus 1020 or any suitable network device or machine type devices. Solely for illustrative purposes and without limitation, process 1200 is described below in the context of network apparatus 1020. Process 1200 may begin at block 1210.
[0090] At block 1210, process 1200 may involve processor 1022 of network apparatus 1020 transmitting a synchronization signal to a UE for determining a UL trigger signal configuration. The synchronization signal may indicate at least one of a cell operating mode of a cell and an availability of UL trigger signal configuration of the cell. The cell operating mode may include an NES mode. Process 1200 may proceed from block 1210 to block 1220.
[0091] At block 1220, process 1200 may involve processor 1022 of network apparatus 1020 receiving a UL trigger signal from the UE based on the UL trigger signal configuration. Process 1200 may proceed from block 1220 to block 1230.
[0092] At block 1230, process 1200 may involve processor 1022 of network apparatus 1020 transmitting a SIB to the UE based on the UL trigger signal.
[0093] In some implementations, the UL trigger signal configuration may be received from the cell or be pre-configured.
[0094] In some implementations, the synchronization signal may include a PBCH, and at least one part of the UL trigger signal configuration may be carried by the PBCH.
[0095] In some implementations, the UL trigger signal configuration may be carried by a PDSCH.
[0096] In some implementations, the UL trigger signal configuration may be carried by another SIB.
[0097] In some implementations, a PDCCH scheduling the PDSCH may be scrambled by a pre-defined RNTI.
[0098] In some implementations, the synchronization signal may include a PBCH, and at least one part of a PDCCH configuration of a PDCCH for scheduling the PDSCH may be carried in the PBCH.
[0099] In some implementations, a PDCCH configuration of a PDCCH for scheduling the PDSCH may be determined by at least one of a pre-defined configuration, a pre-defined parameter and a pre-defined rule.
[0100] In some implementations, a configuration in the PBCH may be used to indicate at least one part of a PDCCH configuration for scheduling a PDSCH carrying the UL trigger signal configuration.
[0101] In some implementations, the UL trigger signal configuration may include another PDCCH configuration for scheduling another PDSCH transmitting the SIB. Additional Notes
[0102] The herein-described subject matter sometimes illustrates different components contained within, or connected with, different other components. It is to be understood that such depicted architectures are merely examples, and that in fact many other architectures can be implemented which achieve the same functionality. In a conceptual sense, any arrangement of components to achieve the same functionality is effectively "associated" such that the desired functionality is achieved. Hence, any two components herein combined to achieve a particular functionality can be seen as "associated with" each other such that the desired functionality is achieved, irrespective of architectures or intermedial components. Likewise, any two components so associated can also be viewed as being "operably connected" , or "operably coupled" , to each other to achieve the desired functionality, and any two components capable of being so associated can also be viewed as being "operably couplable" , to each other to achieve the desired functionality. Specific examples of operably couplable include but are not limited to physically mateable and / or physically interacting components and / or wirelessly interactable and / or wirelessly interacting components and / or logically interacting and / or logically interactable components.
[0103] Further, with respect to the use of substantially any plural and / or singular terms herein, those having skill in the art can translate from the plural to the singular and / or from the singular to the plural as is appropriate to the context and / or application. The various singular / plural permutations may be expressly set forth herein for sake of clarity.
[0104] Moreover, it will be understood by those skilled in the art that, in general, terms used herein, and especially in the appended claims, e.g., bodies of the appended claims, are generally intended as “open” terms, e.g., the term “including” should be interpreted as “including but not limited to, ” the term “having” should be interpreted as “having at least, ” the term “includes” should be interpreted as “includes but is not limited to, ” etc. It will be further understood by those within the art that if a specific number of an introduced claim recitation is intended, such an intent will be explicitly recited in the claim, and in the absence of such recitation no such intent is present. For example, as an aid to understanding, the following appended claims may contain usage of the introductory phrases "at least one" and "one or more" to introduce claim recitations. However, the use of such phrases should not be construed to imply that the introduction of a claim recitation by the indefinite articles "a" or "an" limits any particular claim containing such introduced claim recitation to implementations containing only one such recitation, even when the same claim includes the introductory phrases "one or more" or "at least one" and indefinite articles such as "a" or "an, " e.g., “a” and / or “an” should be interpreted to mean “at least one” or “one or more; ” the same holds true for the use of definite articles used to introduce claim recitations. In addition, even if a specific number of an introduced claim recitation is explicitly recited, those skilled in the art will recognize that such recitation should be interpreted to mean at least the recited number, e.g., the bare recitation of "two recitations, " without other modifiers, means at least two recitations, or two or more recitations. Furthermore, in those instances where a convention analogous to “at least one of A, B, and C, etc. ” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention, e.g., “a system having at least one of A, B, and C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. In those instances where a convention analogous to “at least one of A, B, or C, etc. ” is used, in general such a construction is intended in the sense one having skill in the art would understand the convention, e.g., “a system having at least one of A, B, or C” would include but not be limited to systems that have A alone, B alone, C alone, A and B together, A and C together, B and C together, and / or A, B, and C together, etc. It will be further understood by those within the art that virtually any disjunctive word and / or phrase presenting two or more alternative terms, whether in the description, claims, or drawings, should be understood to contemplate the possibilities of including one of the terms, either of the terms, or both terms. For example, the phrase “Aor B” will be understood to include the possibilities of “A” or “B” or “A and B. ”
[0105] From the foregoing, it will be appreciated that various implementations of the present disclosure have been described herein for purposes of illustration, and that various modifications may be made without departing from the scope and spirit of the present disclosure. Accordingly, the various implementations disclosed herein are not intended to be limiting, with the true scope and spirit being indicated by the following claims.
Claims
1.A method, comprising:receiving, by a processor of an apparatus, a synchronization signal from a cell, wherein the synchronization signal indicates at least one of a cell operating mode of the cell and an availability of Uplink (UL) trigger signal configuration of the cell, and the cell operating mode includes a Network Energy Saving (NES) mode;determining, by the processor, a UL trigger signal configuration based on the availability of UL trigger signal configuration;transmitting, by the processor, a UL trigger signal to the cell based on the UL trigger signal configuration; andreceiving, by the processor, a System Information Block (SIB) from the cell based on the UL trigger signal.2.The method of Claim 1, wherein the UL trigger signal configuration is received from the cell or is pre-configured.3.The method of Claim 1, wherein the synchronization signal includes a Physical Broadcast Channel (PBCH) , and wherein at least one part of the UL trigger signal configuration is carried by the PBCH.4.The method of Claim 1, wherein the UL trigger signal configuration is carried by a Physical Downlink Shared Channel (PDSCH) .5.The method of Claim 4, wherein the UL trigger signal configuration is carried by another SIB.6.The method of Claim 4, wherein a Physical Downlink Control Channel (PDCCH) scheduling the PDSCH is scrambled by a pre-defined Radio Network Temporary Identifier (RNTI) .7.The method of Claim 4, wherein the synchronization signal includes a Physical Broadcast Channel (PBCH) , and wherein at least one part of a Physical Downlink Control Channel (PDCCH) configuration of a PDCCH for scheduling the PDSCH is carried in the PBCH.8.The method of Claim 4, wherein a Physical Downlink Control Channel (PDCCH) configuration of a PDCCH for scheduling the PDSCH is determined by at least one of a pre-defined configuration, a pre-defined parameter and a pre-defined rule.9.The method of Claim 1, wherein a configuration in the PBCH is used to indicate at least one part of a Physical Downlink Control Channel (PDCCH) configuration for scheduling a Physical Downlink Shared Channel (PDSCH) carrying the UL trigger signal configuration.10.The method of Claim 9, wherein the UL trigger signal configuration includes another PDCCH configuration for scheduling another PDSCH transmitting the SIB.11.A method, comprising:transmitting, by a processor of an apparatus, a synchronization signal to a User Equipment (UE) for determining an Uplink (UL) trigger signal configuration, wherein the synchronization signal indicates at least one of a cell operating mode of a cell and an availability of UL trigger signal configuration of the cell, and the cell operating mode includes a Network Energy Saving (NES) mode;receiving, by the processor, a UL trigger signal from the UE based on the UL trigger signal configuration; andtransmitting, by the processor, a System Information Block (SIB) to the UE based on the UL trigger signal.12.The method of Claim 11, wherein the UL trigger signal configuration is transmitted from the cell or is pre-configured.13.The method of Claim 11, wherein the synchronization signal includes a Physical Broadcast Channel (PBCH) , and wherein at least one part of the UL trigger signal configuration is carried by the PBCH.14.The method of Claim 11, wherein the UL trigger signal configuration is carried by a Physical Downlink Shared Channel (PDSCH) .15.The method of Claim 14, wherein the UL trigger signal configuration is carried by another SIB.16.The method of Claim 14, wherein a Physical Downlink Control Channel (PDCCH) scheduling the PDSCH is scrambled by a pre-defined Radio Network Temporary Identifier (RNTI) .17.The method of Claim 14, wherein the synchronization signal includes a Physical Broadcast Channel (PBCH) , and wherein at least one part of a Physical Downlink Control Channel (PDCCH) configuration of a PDCCH for scheduling the PDSCH is carried in the PBCH.18.The method of Claim 14, wherein a Physical Downlink Control Channel (PDCCH) configuration for scheduling the PDSCH is determined by at least one of a pre-defined configuration, a pre-defined parameter and a pre-defined rule.19.The method of Claim 11, wherein a configuration in the PBCH is used to indicate at least one part of a Physical Downlink Control Channel (PDCCH) configuration for scheduling a Physical Downlink Shared Channel (PDSCH) carrying the UL trigger signal configuration.20.The method of Claim 19, wherein the UL trigger signal configuration includes another PDCCH configuration for scheduling another PDSCH transmitting the SIB.